KR100877812B1 - Refrigerator with pressurized closed space and control method - Google Patents

Abstract

The present invention suppresses the natural water evaporation of fruit and vegetables as well as suppresses the phenomenon of inherent fragrance and leakage of internal secretion by increasing the atmospheric pressure in the storage of fruits and vegetables such as vegetables and fruits to enable long-term storage It is to provide a refrigerator.

In addition, the present invention by increasing the pressure in the frozen storage of frozen foods such as meat and fish freezer burn (freezer burn) occurs during the freezing of meat and fish (freezer burn: tissue due to the release of moisture when freezing meat or fish This change phenomenon) is to provide a freezer that enables long-term storage of frozen food.

To this end, the present invention provides a refrigerator comprising a refrigerator or / and freezer compartment for storing food, a door for opening and closing the refrigerator compartment and / or freezer compartment, and a refrigerating cycle for cooling the refrigerator compartment and / or freezer compartment; And a boosting means for increasing the pressure inside the refrigerator compartment and / or the freezer compartment to an atmospheric pressure or higher.

Pressurized, airtight, space, fruit and vegetable, freezer, elevated pressure, refrigerator

Description

Refrigerator with pressurized closed space and its control method {refrigerator and method for controlling the same}

1A to 1C are perspective views illustrating types of conventional refrigerators by type,

Figure 1a is a refrigerator of the type having a freezer compartment and a refrigerating compartment in the upper and lower parts

1B is a side by side refrigerator having a freezer compartment and a refrigerating compartment on left and right sides thereof.

Figure 1c is a refrigerator of the type provided with a refrigerator compartment on the upper left and right sides and a freezer compartment on the lower side

2 is a basic configuration of a refrigeration cycle of an existing refrigerator

3 is a configuration diagram showing a first embodiment of a refrigerator according to the present invention

4 is a configuration diagram showing a second embodiment of a refrigerator according to the present invention;

5 is a configuration diagram showing a third embodiment of the refrigerator according to the present invention

6 is a configuration diagram showing a fourth embodiment of the refrigerator according to the present invention;

7 is a configuration diagram on a refrigeration cycle of the refrigerator according to the first embodiment of the present invention

8 is a configuration diagram of a refrigerator in accordance with a second embodiment of the present invention on a refrigerating cycle;

9 is a configuration diagram of a refrigerator in accordance with a third embodiment of the present invention on a refrigerating cycle;

10 is a configuration diagram on a refrigeration cycle of a refrigerator according to a fourth embodiment of the present invention

11 is a configuration diagram showing a fifth embodiment of a refrigerator according to the present invention

12 is a configuration diagram of a refrigerator in a refrigerator according to a fifth embodiment of the present invention.

13 is a block diagram of a refrigerator in a refrigerator according to a sixth embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

R: Refrigerator F: Freezer

E / C: Chamber 10: Compressor

20: Condenser 30: Expansion valve

40, 40a: Evaporator for freezer 40b: Evaporator for freezer

60: air compressor 70a: door for freezer

70b: Refrigerator door 70c: Chamber lid

70: door of the private refrigerator or lead of the private refrigerator

90: Pressure boosting duct 100: The body

The present invention relates to a refrigerator, and more particularly, to provide a refrigerator which can be kept fresh for a long time by suppressing water evaporation of food by a pressure-sealed method.

In general, a refrigerator is a device that keeps food fresh for a long time as the refrigerant (working fluid) is repeatedly refrigerated, condensed, expanded, and evaporated in a refrigeration cycle. It is one of the necessities.

1A to 1C are reference perspective views of conventional refrigerators by type, and the refrigerator is basically a refrigerator 300 having one door and a freezer compartment at the top and a refrigerating compartment at the bottom thereof, but recently, the freezer compartment and the refrigerating compartment have left and right sides. A horizontally arranged side by side type (aka, side by side type) refrigerator 400 has been widely used, and recently, a refrigerator 500 of a type having a double door type refrigerator compartment at the top and a drawer freezer compartment at the bottom is also being released. It is true.

In the meantime, the refrigerator is divided into simple and direct cooling according to the method of cooling the food. In the cold cooling, the circulating air cooled by passing the evaporator is forced to the food storage room to cool the food. In the direct cooling, the evaporator is exposed to the inside of the food storage room. It is a way to cool by directly delivering cold air to food.

In the past, a structure in which the refrigerator compartment and the freezer compartment were simultaneously cooled by one evaporator was mainly used, but recently, a structure in which the evaporator is independently installed in the refrigerator compartment and the freezer has been released.

Irrespective of the above-mentioned cooling method, the refrigerator generally keeps food fresh by lowering the temperature inside the refrigerator to a desired temperature by using a heat exchange phenomenon in an evaporator according to a refrigeration cycle operation.

In other words, the existing refrigerator can be considered to increase the storage period by artificially creating a condition that is difficult for bacteria to grow by adjusting the internal temperature of the refrigerator compartment to a temperature lower than room temperature.

2, the basic refrigeration cycle of the refrigerator, the refrigerant gas of low temperature / low pressure is compressed in the compressor (1), and then cooled while passing through the condenser (2), and again the expansion valve (3) ', It becomes a low-temperature, low-pressure liquefied gas. The liquefied gas turns into a gas in the 'evaporator (4)', which takes away a large amount of heat and drastically lowers the temperature inside the refrigerator. The refrigerant gas returns to the compressor 1 again and repeats this operation to keep the temperature of the refrigerator cold.

'Refrigerant', which transfers heat, mainly uses freon gas, but since freon gas destroys the ozone layer, it causes air pollution.

However, this storage principle can effectively extend the shelf life for cooked or cooked foods, but it does not show an excellent effect of extending the shelf life for fragile and juicy fruits and vegetables such as vegetables and fruits. In addition, frozen storage foods such as meat and fish are difficult to store for a long time due to the tissue changes caused by sublimation of ice during freezing.

The reason for this is that fruits and vegetables such as vegetables and fruits are easily damaged due to lack of moisture because the internal moisture continuously evaporates to the outside while the water supply is blocked.

In addition, when frozen foods such as meat or fish are frozen, water leaks from the tissues and freezes, resulting in freezing of tissue changes. When we open the freezer, the food has ice and ice frost around it. It can be seen that. For this reason, frozen foods are difficult to maintain and use in a fresh state because their tissues change over time and the smell of other foods is doubled.

The evaporation and dissipation of moisture is a reason for artificially humidifying the vegetables and fruits displayed in the showcase of food stores to maintain freshness. Such evaporation and dissipation is an unavoidable phenomenon that occurs naturally under atmospheric pressure. .

That is, the conventional refrigerator has only a low internal temperature at atmospheric pressure to store vegetables and fruits, such as vegetables, fruits, etc., it does not prevent the evaporation of water effectively, there was a problem in storing fresh vegetables for a long time.

In addition, since the conventional freezer keeps only frozen foods such as meat or fish by lowering only the internal temperature under atmospheric pressure, there is a problem in storing frozen foods fresh for a long time because it does not effectively prevent the leakage of moisture generated during freezing.

In short, conventionally, there is a problem in that the pressure inside the fruit and frozen food and the pressure inside the frozen food are in equilibrium or the pressure inside the fruit and frozen food is slightly high to suppress the natural evaporation and outflow of water.

The present invention is to solve the above-mentioned problems, in order to suppress the natural evaporation and spillage of water, by increasing the external air pressure of fruit and / or frozen food, the internal moisture, fragrance, etc. to increase the external pressure It is to provide a refrigerator that is difficult to shed back.

In other words, by constructing a pressure-tight state by increasing the internal pressure of the refrigerating chamber for storing fruits and vegetables such as vegetables and fruits, and forming a pressurized airtight state, it suppresses the natural water evaporation of fruits and vegetables and the outflow of frozen foods. In addition, it is an object of the present invention to provide a refrigerator that can be stored in a fresh state for a long time by suppressing the phenomenon of inherent fragrance and leakage of internal secretions.

According to a first aspect of the present invention for achieving the above object, a refrigerator comprising a refrigerator compartment for storing food, a door for opening and closing the refrigerator compartment, and a refrigeration cycle for cooling the refrigerator compartment; There is provided a refrigerator comprising a boosting means for raising the air pressure in the refrigerating chamber to an atmospheric pressure or higher.

According to a second aspect of the present invention for achieving the above object, a refrigerator comprising a refrigerator compartment for storing food, a door for opening and closing the refrigerator compartment, and a refrigeration cycle for cooling the refrigerator compartment; Provided is a refrigerator comprising a fruit-only chamber provided to separately store and store fruit and vegetables such as fruits and vegetables in the refrigerating chamber, and a boosting means for raising the atmospheric pressure inside the chamber to an atmospheric pressure or higher.

On the other hand, according to the third aspect of the present invention for achieving the above object, the atmospheric pressure of the refrigerator compartment for storing food, the door for opening and closing the refrigerator compartment, the refrigeration cycle for cooling the refrigerator compartment, and the air pressure inside the refrigerator compartment In the refrigerator control method comprising a boosting means for increasing the above, and a microcomputer for controlling the refrigeration cycle and the boosting means; Setting the internal temperature of the refrigerator compartment to a desired temperature, operating the refrigeration cycle to reach the set temperature, setting the internal pressure of the refrigerator compartment, and raising the internal pressure of the refrigerator compartment until the set pressure is reached. Provided is a control method of a refrigerator, which is characterized in that the present invention.

On the other hand, according to the fourth aspect of the present invention for achieving the above object, the refrigerator compartment for storing food, the door for opening and closing the refrigerator compartment, the refrigeration cycle for cooling the refrigerator compartment, and is provided separately in the refrigerator compartment A refrigerator control method comprising: a chamber, a boosting means for raising the atmospheric pressure inside the chamber above atmospheric pressure, and a microcomputer for controlling the refrigeration cycle and the boosting means; Setting the refrigerating chamber and the chamber internal temperature to a desired temperature, operating the refrigeration cycle to reach the set temperature, setting the internal air pressure of the chamber, and raising the internal air pressure of the chamber until the set air pressure is reached. Provided is a control method of a refrigerator, characterized by including the step of making.

According to a fifth aspect of the present invention for achieving the above object, there is provided a refrigerator comprising a freezer compartment for storing food, a door for opening and closing the freezer compartment, and a refrigerating cycle for cooling the freezer compartment; There is provided a refrigerator comprising a boosting means for raising the air pressure inside the freezing chamber to above atmospheric pressure.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 3 to 10.

Example 1

3 is a configuration diagram showing a first embodiment of a refrigerator according to the present invention, Figure 7 is a configuration diagram on a refrigeration cycle of the refrigerator according to the first embodiment of the present invention, according to a first embodiment of the present invention The refrigerator cools the main body 100 including a refrigerator compartment and a freezer compartment for storing food, doors 70a and 70b that open and close the refrigerator compartment R and the freezer compartment F, respectively, and the refrigerator compartment R. A refrigerator comprising a refrigeration cycle and a microcomputer (not shown) for controlling the refrigeration cycle; A boosting means for increasing the air pressure in the refrigerating chamber (R) above atmospheric pressure is provided.

At this time, the boosting means, the air compressor 60 to suck the outside air outside the refrigerator main body 100 to generate compressed air, and to boost the compressed air generated in the air compressor 60 to the refrigerating chamber (R). It is comprised including the duct B for.

The boosting duct (B) is preferably connected to the cold air flow path (A) before entering the evaporator to sufficiently lower the temperature of the compressed air from the air compressor 60, but is not necessarily limited thereto. That is, it may be connected to the cold air flow passage after the evaporator, or may be directly connected to the refrigerating chamber R, not connected to the cold air flow passages before and after the evaporator.

In the refrigerating chamber (R), pressure detecting means such as a pressure sensor (not shown) is provided to detect a pressure in the refrigerating chamber.

On the other hand, the refrigerator according to the present embodiment further includes a decompression means for reducing the air pressure in the refrigerating chamber (R) raised by the boosting means to the atmospheric pressure state as necessary.

At this time, the decompression means is configured to include a pressure reducing duct for connecting the refrigerating chamber (R) and the outside of the refrigerator, and an opening and closing valve (90) installed on the pressure reducing duct (C) to open and close the pipeline.

In the refrigerator according to the present embodiment, a humidifier (not shown) for supplying moisture into the refrigerating chamber R may be further provided.

In addition, the refrigerator according to the present embodiment is further provided with airtight holding means for maintaining the airtight in a state in which the internal air pressure of the refrigerating chamber (R) is elevated.

The hermetic holding means includes a packing (not shown) for sealing between the refrigerating chamber door 70b and the refrigerating chamber R, and is provided inside the packing so that the refrigerating chamber door 70b is attached to the refrigerating chamber R. It is made of magnetic material (not shown). Of course, the material of the packing itself may be composed of known plastic magnets.

Meanwhile, the refrigerator according to the present embodiment may further include a locking device (not shown) to prevent the door 70b that opens and closes the refrigerating compartment R from being opened when the refrigerating compartment is boosted.

The locking device can be applied to either a locking device having a mechanical operating principle or a locking device having an electrical operating principle in an operating principle, and again, various locking devices of various types and structures can be applied to the respective locking devices. It is possible.

For example, the locking device is a locking device of the locking method of the direct locking method, as well as a locking device of the locking method of the locking method by the solenoid, so that various types of locking devices are known. Can be adopted.

On the other hand, the locking device is configured to determine whether or not locking according to the pressure value in the refrigerating chamber (R), the refrigerator main body 100 to determine whether the refrigerating chamber door (70b) is locked and the pressure state inside the refrigerating chamber (R). There is provided a display device for the user to know.

The operation of the refrigerator according to the first embodiment of the present invention configured as described above is as follows.

Opening the refrigerating compartment door 70b and putting contents to be refrigerated in the refrigerating compartment internal space, or lowering and maintaining the refrigerating compartment (R) space at a low temperature suitable for storing the contents by the action of the refrigeration cycle. The temperature is controlled by intercooling by circulation, and the evaporators 40a and 40b are installed in the freezer compartment F and the refrigerator compartment R, respectively, as in the conventional refrigerator.

However, the refrigerator according to the present embodiment differs in that it boosts the internal pressure of the refrigerating chamber R to a certain degree higher than atmospheric pressure.

That is, when the internal temperature of the refrigerating chamber R is set to a desired temperature while the refrigerator is powered on, the refrigerating cycle is operated to reach the set temperature.

On the other hand, when the internal pressure of the refrigerating chamber R is set to a desired air pressure, the internal pressure of the refrigerating chamber R increases until the set atmospheric pressure is reached. At this time, the internal pressure of the refrigerating chamber R is increased by the action of the boosting means.

That is, the outside air compressed by the air compressor 60 is discharged from the air compressor 60 and then introduced into the refrigerating chamber R through the boosting duct B to increase the internal pressure of the refrigerating chamber.

At this time, the compressed air is introduced into the cold air flow path (A) before flowing into the evaporator (40a) to pass through the evaporator so that the compressed air is introduced into the refrigerating chamber (R) while the temperature is lowered.

In this way, when the refrigerator internal temperature and the internal air pressure reach the target temperature and the target air pressure set by the user, the refrigeration cycle and the air compressor 60 are stopped by the control of the microcomputer.

That is, the temperature and the pressure inside the refrigerating chamber R are controlled by a temperature sensor provided to detect the temperature inside the refrigerating chamber R, and a pressure sensor provided to detect the pressure inside the refrigerating chamber R. Each of them is independently detected, and when the detected temperature and pressure reach a set target temperature or target pressure, the refrigerating cycle and the air compressor 60 are stopped.

If the user opens the refrigerating compartment door 70b to take out food, the temperature inside the refrigerating compartment R is increased. When the temperature rise range exceeds the predetermined upper limit, the refrigeration cycle is operated again by the control of the microcomputer. .

On the other hand, in opening and closing the refrigerating compartment door 70b as described above, the pressure inside the refrigerating compartment R changes with temperature, and the pressure value inside the refrigerating compartment R becomes less than or equal to a predetermined lower limit, or the refrigerating compartment. When the pressure inside the refrigerating chamber R becomes equal to the atmospheric pressure outside the refrigerator by opening the door 70b, the air compressor 60 is also operated along with the refrigeration cycle under the control of the microcomputer.

Of course, when the air compressor 60 operates, the locking device also works in conjunction with the air compressor 60 to prevent the refrigerating chamber door 70b from being opened by the increased pressure inside the refrigerating chamber R, thereby reliably preventing cold air and pressure leakage. The sealing reliability of the door can be improved.

Since the locking device operates so that the refrigerating chamber door does not open when the pressure inside the refrigerating chamber R is increased to the target value, the locking by the locking device must be released to open the refrigerating chamber R. The pressure inside the refrigerating compartment (R) must be reduced to atmospheric pressure.

Therefore, since the decompression is necessary to open the refrigerating compartment door 70b, the refrigerating compartment is opened by opening and closing the valve 90 which is installed on the decompression duct C connecting the refrigerating compartment R and the refrigerator outside to open and close the pipeline. Allow R) to communicate with the outside of the refrigerator.

In addition, when a physical force for releasing the locking device of the door is applied, a mechanical structure may be formed in the door or the locking device such that the pressure is reduced by the force.

In this way, the pressure inside the refrigerating compartment (R) is reduced to atmospheric pressure, thereby opening the refrigerating compartment (R) in a smooth, natural, and safe state without noise and safety accidents due to sudden pressure changes even when the refrigerating door is unlocked. It becomes possible.

In addition, according to the present embodiment, since sufficient moisture is supplied into the refrigerating chamber R by a humidifier provided separately, it helps to keep fresh vegetables and fruits.

Since the refrigerator of the present embodiment operates as described above, a pressure higher than the normal atmospheric pressure is applied to the fruits or vegetables stored in the refrigerating chamber (R), so that the fruits or vegetables are placed in a pressurized sealed state, so that the moisture of the fruits and vegetables is evaporated. It is possible to effectively prevent the spread of inherent scent, discharge of secretions.

On the other hand, when the refrigerating compartment door 70b is closed again, the door is closed and an electrical signal is sent to the microcomputer, and the microcomputer operates the air compressor 60 together with the refrigerating cycle to compress the compressed air into the refrigerating chamber R. The supply of compressed air is stopped and the supply of compressed air is stopped when the set target pressure is reached.

Example 2

Figure 4 is a block diagram showing a second embodiment of the refrigerator according to the present invention, Figure 8 is a block diagram of a refrigerator in the refrigerator according to the second embodiment of the present invention, according to a second embodiment of the present invention The refrigerator includes a main body 100 including a refrigerator compartment R and a freezer compartment F for storing food, doors 70a and 70b that open and close the refrigerator compartment R and the freezer compartment F, respectively, A refrigerator comprising a refrigeration cycle for cooling the refrigerating compartment (R) and a microcomputer for controlling the refrigeration cycle; A chamber (E / C) dedicated to fruit and vegetable is provided to separately store and store fruit and vegetables such as fruits and vegetables in the refrigerating chamber (R), and boosting means for raising the air pressure inside the chamber (E / C) to an atmospheric pressure or higher. Is provided.

At this time, the boosting means is an air compressor 60 for sucking compressed air outside the refrigerator main body 100 to generate compressed air, and a boosting duct for sending the compressed air generated by the air compressor 60 to the chamber ( And b).

As shown in FIG. 4, the boosting duct B is preferably connected to pass through the evaporator 40a so as to sufficiently lower the temperature of the compressed air from the air compressor 60, but is not limited thereto. Do not. That is, although not shown, the chamber E / C may be directly connected to the chamber E / C without passing through the evaporator 40a. In this case, a part of the cold air passing through the evaporator 40a is separately installed. Branched to the cooling cold air flow path will be supplied to the chamber side.

On the other hand, the chamber (E / C) is provided with a pressure detecting means (not shown), such as a pressure sensor to detect the pressure in the chamber.

In addition, the refrigerator according to the present embodiment further includes a pressure reducing means for reducing the pressure inside the chamber raised by the pressure raising means to an atmospheric pressure state as necessary.

At this time, the decompression means, the pressure reduction duct (C) for connecting the chamber (E / C) and the outside of the refrigerator, and the opening and closing valve 90 is installed on the pressure reduction duct (C) to open and close the pipeline. It is configured by.

In addition, the refrigerator according to the present embodiment may further include a humidifier for supplying moisture into the chamber E / C.

In addition, the refrigerator according to the present embodiment is further provided with airtight holding means for maintaining the airtight in a state where the pressure inside the chamber (E / C) is elevated.

The hermetic holding means includes a packing (not shown) for sealing between the lid 70c and the chamber E / C, and is provided inside the packing to attach the lid 70c to the chamber E / C. It is made of a magnetic material (not shown). Of course, the material of the packing itself may be composed of known plastic magnets.

On the other hand, the refrigerator according to the present embodiment, it is preferable that the lid (lid) for opening and closing the chamber (E / C) is additionally provided with a locking device to prevent the opening in the state where the pressure inside the chamber (E / C) is elevated. Do.

In the present embodiment, the locking device may be any of a locking device having a mechanical operation principle and a locking device having an electrical operation principle in an operating principle, and again, various types and The locking device of the structure is applicable.

For example, the locking device is a locking device of the locking method of the direct locking method, as well as a locking device of the locking method of the locking method by a solenoid, so that various types of locking devices are known. Can be adopted.

On the other hand, the locking device is configured to determine whether or not locking according to the pressure value inside the chamber (E / C), the refrigerator in the lock state of the lid (70c) and the pressure state inside the chamber (E / C) It is preferred that a display device (not shown) is provided for the user to know.

The operation of the refrigerator according to the second embodiment of the present invention configured as described above is as follows.

First, when the internal temperature of the refrigerating chamber (R) is set to a desired temperature while power is applied to the refrigerator, the refrigeration cycle is operated to reach the set temperature.

On the other hand, if the internal pressure of the chamber (E / C) is set to the desired pressure, the internal pressure of the chamber (E / C) is increased until the set pressure is reached, the pressure of the interior space of the chamber (E / C) is increased It is raised by the action of the means.

That is, the outside air compressed by the air compressor 60 is discharged from the air compressor 60, and then flows into the chamber E / C through the boosting duct B to increase the internal pressure. .

At this time, the compressed air passes through the evaporator of the refrigeration cycle to be introduced into the chamber (E / C) in the temperature is lowered.

As such, when the internal temperature of the refrigerator and the internal air pressure of the chamber E / C reach the target temperature and the target air pressure set by the user, the refrigeration cycle and the air compressor 60 are stopped by the control of the microcomputer.

That is, the temperature inside the refrigerator compartment R and the temperature sensor provided to detect the temperature inside the refrigerator compartment R, and the pressure sensor provided to detect the pressure inside the chamber E / C. The pressure inside the chamber E / C is independently detected, and when the detected temperature and pressure reach a set target temperature or target pressure, the refrigeration cycle and the air compressor 60 are stopped.

If the user opens the refrigerating compartment door 70b to take out food, the temperature inside the refrigerating compartment R is increased. When the temperature rise range exceeds the predetermined upper limit, the refrigeration cycle is operated again by the control of the microcomputer. .

In the refrigerator of the present embodiment, the pressure inside the chamber E / C does not drop only by opening and closing the refrigerating compartment door 70b as described above.

Therefore, in order to take out the fruits and vegetables stored in the chamber (E / C), the pressure in the chamber (E / C) must be reduced to an atmospheric pressure state.

That is, the opening / closing valve 90 provided on the pressure reducing duct C constituting the pressure reducing means is opened so that the internal space of the chamber E / C and the external space of the chamber (outside the refrigerating chamber or the refrigerator) communicate with each other.

In this way, the pressure inside the chamber E / C is lowered to atmospheric pressure, and thus, even if the lid 70c installed in the chamber E / C is released, the pressure is smooth without noise and safety accidents due to sudden pressure changes. It is possible to open the chamber E / C in a natural and safe state.

In addition, according to the present embodiment, moisture may be supplied into the chamber E / C by a humidifier (not shown) provided separately.

In the refrigerator of the present invention operating as described above, a pressure higher than the normal atmospheric pressure is applied to the fruits or vegetables stored in the chamber (E / C), so that the fruits or vegetables are placed in a pressure-tight state, and the fruits and vegetables evaporate moisture. It is possible to effectively prevent the spread of inherent scent and discharge of secretions.

On the other hand, when the lid 70c of the opened chamber E / C is closed again, the lead 70c is closed and an electrical signal is sent to the microcomputer, and the microcomputer operates the air compressor 60 together with the refrigerating cycle. The compressed air cooled into the chamber E / C is supplied again, and when the set target pressure is reached, the supply of the compressed air is stopped.

Example 3

5 is a configuration diagram showing a third embodiment of the refrigerator according to the present invention, Figure 9 is a configuration diagram on a refrigeration cycle of the refrigerator according to the third embodiment of the present invention, according to a third embodiment of the present invention The refrigerator includes a refrigerating chamber (R) dedicated to fruit and vegetable such as fruits and vegetables for storing and storing the fruits, a door (70) installed to open and close the refrigerating chamber (R), and the refrigerating chamber (R). And a refrigerating cycle, a microcomputer for controlling the refrigerating cycle, and boosting means for raising the atmospheric pressure inside the refrigerating chamber R to an atmospheric pressure or higher.

That is, the refrigerator according to the present embodiment does not have a freezer compartment F separately, and has only a refrigerator compartment R dedicated for storing and storing fruits and vegetables. The rest of the configuration is similar to that of the first embodiment.

The boosting means of the present embodiment is also an air compressor 60 for sucking compressed air outside the refrigerator main body 100 to generate compressed air, and for boosting compressed air generated in the air compressor 60 to the refrigerating chamber R. It is comprised including the duct B for.

The boosting duct (B) is preferably connected to the cold air flow path (A) before entering the evaporator 40 to sufficiently lower the temperature of the compressed air from the air compressor 60, but is not necessarily limited thereto. That is, it may be connected to the cold air flow path after passing through the evaporator 40, or may be directly connected to the refrigerating chamber R without being connected to the cold air flow paths before and after the evaporator.

In the refrigerating chamber (R), pressure detecting means such as a pressure sensor (not shown) is provided to detect a pressure in the refrigerating chamber.

In addition, the refrigerator according to the present embodiment is provided with decompression means for reducing the air pressure inside the refrigerating chamber (R) raised by the boosting means to atmospheric pressure as necessary.

At this time, the decompression means, a pressure reducing duct (C) for connecting the refrigeration chamber (R) dedicated to fruit and vegetable and the outside of the refrigerator, and the opening and closing valve (90) installed on the pressure reducing duct (C) to open and close the pipe line It is configured to include.

In addition, the refrigerator according to the present embodiment is further preferably provided with a humidifier (humidifier) for supplying moisture into the refrigerating chamber (R) dedicated to the fruit and vegetable.

In addition, the refrigerator according to the present embodiment further includes an airtight holding means for maintaining the airtightness in the state where the internal pressure of the refrigerating chamber (R) dedicated for fruit and vegetable is elevated.

The hermetic holding means includes a packing for sealing between the door 70 and the refrigerating chamber R dedicated to fruit and vegetable, and a magnetic material provided inside the packing to attach the door 70 to the refrigerating chamber R. Of course, the material of the packing itself may be composed of known plastic magnets.

On the other hand, the refrigerator according to the present embodiment is preferably further provided with a locking device for preventing the door for opening and closing the refrigerating chamber (R) for exclusive use of the fruit and vegetable does not open when the refrigerating chamber (R) is elevated.

The locking device can be applied to either a locking device having a mechanical operating principle or a locking device having an electrical operating principle in an operating principle, and again, various locking devices of various types and structures can be applied to the respective locking devices. It is possible.

For example, the locking device is a locking device of the locking method of the direct locking method, as well as a locking device of the locking method of the locking method by a solenoid, so that various types of locking devices are known. Can be adopted.

The locking device is configured to determine whether to lock according to the pressure value in the refrigerator compartment (R), the refrigerator main body 100 to allow the user to know whether the door is locked and the pressure state inside the refrigerator compartment (R) A display device (not shown) is provided.

The operation of the fruit-only refrigerator according to the third embodiment of the present invention configured as described above is as follows.

Opening the refrigerating compartment door and putting the contents to be refrigerated in the refrigerating compartment (R) space or lowering and maintaining the inside of the refrigerating compartment (R) to a low temperature suitable for storing the contents by the action of the refrigeration cycle. By circulation, the temperature is controlled by intercooling.

The refrigerator according to the present embodiment has only a refrigerating compartment (R) dedicated to fruit and vegetable in performing such a function, and in storing and storing the fruits and vegetables in the refrigerating compartment (R), the internal pressure of the refrigerating compartment (R) is somewhat higher than atmospheric pressure. .

That is, in the state where the power is applied to the refrigerator, when the internal temperature of the refrigerating chamber R dedicated to the fruit chamber is set to a desired temperature, the refrigeration cycle is operated to reach the set temperature.

On the other hand, when the internal pressure of the refrigerating chamber R is set to a desired air pressure, the internal pressure of the refrigerating chamber R increases until the set atmospheric pressure is reached. At this time, the internal pressure of the refrigerating chamber R is increased by the action of the boosting means.

That is, the external air compressed by the air compressor 60 is discharged from the air compressor 60, and then flows into the refrigerating chamber R through the boosting duct B by the action of the blower fan 41. The internal pressure of the refrigerator compartment R is increased.

At this time, the compressed air is introduced into the cold air flow path (A) before flowing into the evaporator 40 to pass through the evaporator so that the compressed air is introduced into the refrigerating chamber (R) at a lowered temperature.

As such, when the refrigerator internal temperature and the internal air pressure dedicated to the fruiting chamber reach the target temperature and the air pressure set by the user, the refrigeration cycle and the air compressor 60 are stopped by the control of the microcomputer.

That is, the temperature and the pressure inside the refrigerating chamber R are controlled by a temperature sensor provided to detect the temperature inside the refrigerating chamber R, and a pressure sensor provided to detect the pressure inside the refrigerating chamber R. Each of them is independently detected, and when the detected temperature and pressure reach a set target temperature or target pressure, the refrigeration cycle and the air compressor 60 are stopped.

And, if the user opens the door 70 of the refrigerator to take out the fruits and vegetables, the temperature inside the refrigerator compartment (R) is increased, but if the temperature rise range exceeds the predetermined upper limit, the refrigeration cycle is operated again by the control of the microcomputer. do.

On the other hand, when opening and closing the door 70 of the refrigerator as described above, the pressure inside the refrigerating chamber (R) is also lowered, the degree of pressure drop is less than a predetermined lower limit or the opening of the refrigerating compartment door (70) When the pressure inside the refrigerating chamber (R) becomes equal to the atmospheric pressure outside the refrigerator, the air compressor (60) operates together with the refrigeration cycle under the control of the microcomputer.

Of course, when the air compressor 60 operates, the locking device also works in conjunction with the air compressor 60 to prevent the door 70 from being opened due to the increased pressure inside the refrigerating chamber R, thereby reliably preventing cold air and pressure leakage. Can improve the sealing reliability.

Since the refrigerating chamber door does not open when the pressure inside the refrigerating chamber R is increased to a target value, the locking by the locking device must be released. For this purpose, the pressure inside the refrigerating chamber R should be reduced to an atmospheric pressure state.

Therefore, since the decompression is necessary to open the refrigerating compartment door, the refrigerating compartment R is opened by opening and closing the valve 90 which is installed on the decompression duct C connecting the refrigerating compartment R and the refrigerator outside to open and close the pipeline. Allow the outside of the refrigerator to communicate.

In this way, the internal pressure of the refrigerating compartment (R) dedicated to the fruit and vegetable is reduced to the atmospheric pressure state, and thus the refrigerator compartment (R) is smooth and natural and safe without noise and safety accidents due to sudden pressure change even when the door of the refrigerator compartment is released. It becomes possible to open.

In addition, according to the present embodiment, the humidifier is provided separately to supply sufficient moisture to the fruits and vegetables inside the refrigerating chamber (R).

The refrigerator of the present invention operating as described above acts on the fruit or vegetable stored in the refrigerating chamber (R) dedicated to fruits and vegetables higher pressure than the normal atmospheric pressure, the fruit or vegetable is put in a pressure-sealed state, the moisture of the fruit or vegetable Evaporation, inherent fragrance certainty and discharge of secretions are effectively prevented.

On the other hand, when the door 70 of the opened refrigerator is closed again, the door is closed and an electrical signal is sent to the microcomputer, and the microcomputer operates the air compressor 60 together with the refrigerating cycle to compress the inside of the refrigerating chamber R. The air is supplied again, and the supply of compressed air is stopped when the set target pressure is reached.

Example 4

6 is a block diagram showing a fourth embodiment of the refrigerator according to the present invention, Figure 10 is a block diagram of a refrigerator according to the fourth embodiment of the present invention on a refrigeration cycle,

In the refrigerator according to the fourth embodiment of the present invention, the refrigerating chamber (R) is provided to store and store the fruit and vegetable such as fruits and vegetables, and the refrigerating chamber (R) exclusively for fruits and vegetables, and to open and close the refrigerating chamber (R). A lid, a refrigerating cycle for cooling the refrigerating compartment R, a microcomputer (not shown) for controlling the refrigerating cycle, and boosting means for increasing the atmospheric pressure inside the refrigerating compartment R above atmospheric pressure. It is configured to include.

At this time, the evaporator 40 constituting the refrigeration cycle is installed in a form surrounding the refrigerating chamber (R) to directly cool the refrigerating chamber (R).

That is, the refrigerator according to the present embodiment is provided with only a refrigerating compartment (R) dedicated to storing fruits and vegetables refrigerated without having a freezer compartment (F) separately, and a direct cooling method for directly cooling the refrigerating compartment (R). It is different in that it is a top surface opening and closing method, and the rest of the structure is substantially the same as the first embodiment described above.

The boosting means of the present embodiment is also an air compressor 60 for sucking compressed air outside the refrigerator main body 100 to generate compressed air, and for boosting compressed air generated in the air compressor 60 to the refrigerating chamber R. It is comprised including the duct B for.

The boosting duct B is preferably installed to pass through the evaporator 40 to sufficiently lower the temperature of the compressed air from the air compressor 60, but is not necessarily limited thereto.

That is, it may be directly connected to the refrigerating chamber (R) without passing through the evaporator (40).

In addition, the refrigerating chamber (R) is provided with pressure detecting means such as a pressure sensor (not shown) to detect the pressure in the refrigerating chamber (R).

In addition, the refrigerator according to the present embodiment is provided with decompression means for reducing the air pressure inside the refrigerating chamber (R) raised by the boosting means to atmospheric pressure as necessary.

At this time, the decompression means, a pressure reducing duct (C) for connecting the refrigeration chamber (R) dedicated to fruit and vegetable and the outside of the refrigerator, and the opening and closing valve (90) installed on the pressure reducing duct (C) to open and close the pipe line It is configured to include.

The refrigerator according to the present embodiment may further include a humidifier (not shown) for supplying moisture into the refrigerating chamber R dedicated to the fruit vegetable.

In addition, the refrigerator according to the present embodiment is further provided with airtight holding means for maintaining the airtight in the state where the internal air pressure of the refrigerating chamber (R) dedicated to the fruit and vegetable is elevated.

The hermetic holding means includes a packing for sealing between the lid 70 and the refrigerating chamber R dedicated to fruit and vegetable, and a magnetic material provided inside the packing to attach the lid 70 to the refrigerating chamber R. Of course, the material of the packing itself may be composed of known plastic magnets.

Meanwhile, the refrigerator according to the present embodiment further includes a locking device (not shown) to prevent the lid 70 for opening and closing the upper surface of the refrigerating-only refrigerating compartment R so as not to open in the state where the refrigerating compartment R is pressurized. Is preferred.

The locking device can be applied to either a locking device having a mechanical operating principle or a locking device having an electrical operating principle in an operating principle, and again, various locking devices of various types and structures can be applied to the respective locking devices. It is possible.

For example, the locking device is a locking device of the locking method of the direct locking method, as well as a locking device of the locking method of the locking method by a solenoid, so that various types of locking devices are known. Can be adopted.

The locking device is configured to determine whether or not to lock according to the pressure value in the refrigerator compartment (R), the refrigerator main body 100 to allow the user to know whether the lid is locked and the pressure state inside the refrigerator compartment (R) A display device (not shown) is provided.

The operation of the fruit-only refrigerator according to the fourth embodiment of the present invention configured as described above is as follows.

The refrigerator opens lid that closes the upper surface of the refrigerating compartment (R), and puts contents to be refrigerated, such as food, in the inside of the refrigerating compartment (R), and is suitable for storing the inside space of the refrigerating compartment (R) by the action of the refrigeration cycle. In performing the action of lowering and maintaining at a low temperature, the refrigerating chamber (R) is cooled by a direct cooling method.

The refrigerator of the present embodiment is provided with only a refrigerating compartment (R) dedicated to fruit and vegetable in performing this function, and in the storage and storage of fruit and vegetable in the refrigerating compartment (R), the pressure of the internal pressure of the refrigerating compartment (R) to a certain degree higher than the conventional pressure It is different from the refrigerator.

That is, in the state where the power is applied to the refrigerator, when the internal temperature of the refrigerating chamber R dedicated to the fruit chamber is set to a desired temperature, the refrigeration cycle is operated to reach the set temperature.

On the other hand, when the internal pressure of the refrigerating chamber R is set to a desired air pressure, the internal pressure of the refrigerating chamber R increases until the set atmospheric pressure is reached. At this time, the internal pressure of the refrigerating chamber R is increased by the action of the boosting means.

That is, the outside air compressed by the air compressor 60 is discharged from the air compressor 60, and then flows into the refrigerating chamber R through the boosting duct B to increase the internal pressure of the refrigerating chamber R. do.

At this time, the compressed air is passed through the evaporator 40 to the boosting duct (B) so as to flow into the refrigerating chamber (R) at a temperature lowered state.

As such, when the refrigerator internal temperature and the internal air pressure dedicated to the fruiting chamber reach the target temperature and the air pressure set by the user, the refrigeration cycle and the air compressor 60 are stopped by the control of the microcomputer.

That is, the temperature and the pressure inside the refrigerating chamber R are controlled by a temperature sensor provided to detect the temperature inside the refrigerating chamber R, and a pressure sensor provided to detect the pressure inside the refrigerating chamber R. Each of them is independently detected, and when the detected temperature and pressure reach a set target temperature or target pressure, the refrigeration cycle and the air compressor 60 are stopped.

Then, if the user opens the lid 70 closing the upper surface of the refrigerating compartment (R) to take out the fruit vegetables, the temperature inside the refrigerating compartment (R) is increased, but if the temperature increase range exceeds the predetermined upper limit value, the control of the microcomputer The refrigeration cycle will be activated again.

On the other hand, in opening and closing the lid 70 of the refrigerator as described above, the pressure inside the refrigerating chamber R is also lowered, and the degree of pressure drop is less than or equal to a predetermined lower limit or the refrigerating chamber is opened by opening the lid 70. (R) When the pressure inside the refrigerator becomes equal to the atmospheric pressure outside the refrigerator, the air compressor 60 is operated together with the refrigeration cycle by the control of the microcomputer.

Of course, when the air compressor 60 operates, the locking device also works in conjunction with the air compressor 60 to prevent the lid 70 from being opened due to the increased pressure inside the refrigerating chamber R, thereby reliably preventing cold air and pressure leakage. Can improve the sealing reliability.

Since the lid does not open when the pressure inside the refrigerating chamber R is boosted to a target value, the locking by the locking device should be released. For this purpose, the pressure inside the refrigerating chamber R should be reduced to the atmospheric pressure.

Therefore, in order to open the lid 70 closing the refrigerating chamber (R), since the decompression is essential, the opening and closing valve is installed on the decompression duct (C) connecting the refrigerating chamber (R) and the outside of the refrigerator (opening and closing valves ( 90) is opened so that the refrigerator compartment (R) and the outside of the refrigerator communicate.

In this way, the internal pressure of the refrigerating compartment (R) dedicated to the fruit and vegetable is reduced to atmospheric pressure, and thus the refrigerator (R) is opened in a smooth, natural, and safe state without noise and safety accidents due to sudden pressure change even when the lid is released. It becomes possible.

In addition, according to the present embodiment, sufficient moisture is supplied to the fruits and vegetables inside the refrigerating chamber R by a humidifier (not shown) provided separately.

The refrigerator of the present invention operating as described above acts on the fruit or vegetable stored in the refrigerating chamber (R) dedicated to fruits and vegetables higher pressure than the normal atmospheric pressure, the fruit or vegetable is put in a pressure-sealed state, the moisture of the fruit or vegetable Evaporation, inherent fragrance certainty and discharge of secretions are effectively prevented.

On the other hand, when the lid 70 is opened again, the lid is closed and an electrical signal is sent to the microcomputer, and the microcomputer operates the air compressor 60 together with the refrigerating cycle, thereby compressing the compressed air into the refrigerating chamber R. The supply of compressed air is stopped again when the set target pressure is reached.

Example 5

11 is a configuration diagram showing a fifth embodiment of a refrigerator according to the present invention, and FIG. 12 is a configuration diagram of a refrigerator in accordance with a fifth embodiment of the present invention on a refrigeration cycle.

A refrigerator according to a fifth exemplary embodiment of the present invention includes a main body 100 including a freezer compartment for storing food, a door for opening and closing the refrigerator compartment R and the freezer compartment F, and the refrigerator compartment R, respectively. A refrigerator comprising a refrigeration cycle for cooling and a microcomputer (not shown) for controlling the refrigeration cycle; A boosting means is provided for increasing the air pressure in the freezing compartment and the refrigerating compartment above atmospheric pressure.

In this case, the boosting means may include an air compressor 60 that sucks outside air outside the refrigerator main body 100 to generate compressed air, and the compressed air generated by the air compressor 60 in the freezing chamber F and the refrigerating chamber R. It is configured to include a boosting duct (B) for sending to).

The boosting duct (B) is preferably connected to the cold air flow path (A) (A ') before entering each evaporator (40a, 40b) so as to sufficiently lower the temperature of the compressed air from the air compressor (60) However, the present invention is not limited thereto. That is, the refrigerator compartment evaporator 40a and the freezer compartment evaporator 40b may be connected to the cold air passages after passing through the freezer compartments, respectively, and are not directly connected to the cold air passages before and after each of the evaporators. May be connected respectively.

On the other hand, the control valve 50 for controlling the flow of compressed air to the freezing chamber side is provided on the pipe line branched in the boosting duct (B) toward the freezer compartment evaporator (40b).

In addition, pressure detection means such as a pressure sensor (not shown) are respectively provided in the freezer compartment F and the refrigerating chamber R to detect pressure in the refrigerator and the refrigerator compartment.

On the other hand, the refrigerator according to the present embodiment further includes a pressure reducing means for reducing the atmospheric pressure in the freezer compartment (F) and the refrigerating chamber (R) raised by the boosting means to the atmospheric pressure state as necessary.

At this time, the decompression means is installed on the decompression duct (C1) (C2) and the decompression duct (C1) (C2) for connecting the freezer compartment (F) and the refrigerating chamber (R) and the outside of the refrigerator, respectively. It is configured to include an on-off valve (90a, 90b) to be opened and closed. The pressure reducing ducts C1 and C2 are omitted in FIG. 11 for the sake of simplicity. However, referring to FIG.

That is, the decompression duct is provided by separately separating the freezing chamber F and the decompression duct C1 connecting the outside of the refrigerator and the refrigerating chamber R and the decompression duct C2 connecting the outside of the refrigerator. As in the on and off valves 90a and 90b on each of the pressure reducing ducts C1 and C2 are preferably installed separately.

However, it is not limited to this structure, the pressure reducing duct connecting the freezer compartment (F) and the refrigerator compartment (R) and the outside of the refrigerator are connected from the freezer compartment and the refrigerator compartment, respectively, forming an integrated pipe in the middle, and the three-way valve at the point of integration It may be installed to selectively reduce the freezing compartment or the refrigerating compartment.

On the other hand, in the refrigerator according to the present embodiment, it is preferable that a humidifier (not shown) for supplying moisture into the refrigerating chamber (R) is further provided.

In addition, the refrigerator according to the present embodiment is further provided with airtight holding means for maintaining the airtight in the state where the air pressure inside the freezer compartment (F) and the refrigerating chamber (R) is elevated.

The hermetic holding means includes a packing (not shown) for sealing between the freezing compartment door 70a and the freezing compartment F and between the refrigerating compartment door 70b and the refrigerating compartment R, and is provided inside the packing compartment for the refrigerating compartment door. 70b is made of a magnetic material (not shown) to be attached to the refrigerating chamber (R). Of course, the material of the packing itself may be composed of known plastic magnets.

On the other hand, in the refrigerator according to the present embodiment, each door (70a, 70b) for opening and closing the freezing chamber (F) and the refrigerating chamber (R) is a locking device (not shown) so that the opening does not open in the state where each chamber is boosted. ) May be further provided.

The locking device is applicable to any of the known locking devices having the principle of mechanical operation and the known locking devices having the principle of electrical operation in the principle of operation, and in each of the above-mentioned locking devices again various types and structures of Locking devices are applicable.

For example, the locking device is a locking device of the locking method of the direct locking method, as well as a locking device of the locking method of the locking method by a solenoid, so that various types of locking devices are known. Can be adopted.

On the other hand, the locking device is configured to determine whether or not locking according to the pressure values in the freezer compartment (F) and the refrigerating chamber (R), respectively, the refrigerator main body 100 has a freezing chamber door (70a) and whether the freezing compartment (F) A display device (not shown) is provided to allow a user to know an internal pressure state, whether the refrigerator door 70b is locked, and a pressure state inside the refrigerator compartment R.

The operation of the refrigerator according to the fifth embodiment of the present invention configured as described above is as follows.

Opening the freezer door 70a or the freezer door 70b and putting contents to be frozen or refrigerated in the freezer compartment or the inside of the freezer compartment, or storing the inside space of the freezer compartment F and the refrigerator compartment R by the action of the freezing cycle. In performing the action of lowering and maintaining the low temperature suitable for the temperature control by intercooling by the circulation of cold air, the evaporator (40a, 40b) is respectively installed in the freezer compartment (F) and the refrigerator compartment (R) is a conventional refrigerator Same as in

However, the refrigerator of the present embodiment is different in that the pressures inside the freezing chamber F and the refrigerating chamber R are raised to a certain degree higher than atmospheric pressure in performing this function.

That is, when power is supplied to the refrigerator, when the internal temperatures of the freezer compartment F and the refrigerator compartment R are set to a desired temperature, the refrigeration cycle is operated to reach the set temperature.

On the other hand, when the internal pressures of the freezer compartment F and the refrigerating chamber R are set to a desired air pressure, the internal pressures of the freezer compartment F and the refrigerating chamber R rise until the set air pressure is reached. At this time, the air pressure inside the freezing chamber F and the refrigerating chamber R is increased by the action of the boosting means.

That is, the outside air compressed by the air compressor 60 is discharged from the air compressor 60, and then flows into the freezer compartment F and the refrigerating compartment R through the boosting duct B, thereby freezing the inside of the freezer compartment and the refrigerating compartment. It raises the barometric pressure.

At this time, the compressed air flows into the cold air flow path (A) (A ') before flowing into the evaporator (40a, 40b) to pass through each evaporator to the freezing chamber (F) and the refrigerating chamber (R) in a state of lowering the temperature. Allow inflow.

In this way, when the refrigerator internal temperature and the internal air pressure reach the target temperature and the target air pressure set by the user, the refrigeration cycle and the air compressor 60 are stopped by the control of the microcomputer.

That is, the temperature sensor is provided to detect the temperature inside the freezer compartment (F) and the refrigerator compartment (R), respectively, and the pressure sensor is provided to detect the pressure inside the freezer compartment (F) and the refrigerator compartment (R), respectively. By this, the temperature and the pressure in the freezer compartment F and the refrigerating compartment R are independently detected, and when the detected temperature and the pressure reach the set target temperature or target pressure, the refrigerating cycle and the air compressor 60 are Each stops running.

At this time, when the temperature of any one of the freezer compartment (F) and the refrigerating chamber (R) does not reach the set temperature, only the blower fan for the evaporator that does not reach the set temperature is operated. On the other hand, in the freezer compartment F and the refrigerating compartment R, the freezer compartment has reached the set pressure, but when the pressure in the freezer compartment R does not reach the set pressure, it is compressed only to the refrigerating compartment R that has not reached the set pressure. It is enough to block the pipeline by the control valve 50 so that air is supplied.

In the freezer compartment F and the refrigerating compartment R, the refrigerating compartment has reached a set pressure, but when the pressure in the freezer compartment does not reach the set pressure, the compressed air is supplied to the freezer compartment so that the compressed air is supplied to the freezer compartment. Opening is made, and in this case, after the pressure in the freezer compartment and the refrigerating compartment both reaches the set pressure, the control valve 50 drops the pipeline to the set temperature on the freezer compartment side.

On the other hand, if the user opens the refrigerator compartment door 70b to take out the food, the temperature inside the refrigerator compartment R rises. When the temperature rise range exceeds the predetermined upper limit, the refrigeration cycle is operated again by the control of the microcomputer. .

In addition, in the opening and closing of the freezing compartment door 70a or the refrigerating compartment door 70b as described above, the pressure in the freezing compartment F or the refrigerating compartment R also changes with the temperature, and the freezing compartment F or the refrigerating compartment R ) If the internal pressure value is less than or equal to a predetermined lower limit value, or if the pressure inside the freezer compartment F or the freezer compartment becomes equal to the atmospheric pressure outside the refrigerator, the micro compressor controls the air compressor together with the freezer cycle. (60) will also work again.

Of course, when the air compressor 60 operates, the locking device works in conjunction with the air compressor 60 to prevent the freezing compartment door 70a or the refrigerating compartment door 70b from being opened by the increased pressure inside the freezing compartment F or the refrigerating compartment R. As a result, cold air and pressure leakage can be reliably prevented, thereby increasing the sealing reliability of the door.

In the state in which the pressure inside the freezing compartment F or the refrigerating compartment R is increased to a target value, the pipeline is blocked by the control valve 50 and the locking device is operated so that the freezing compartment door or the refrigerating compartment door is not opened. In order to open the (F) or the refrigerating compartment (R), the locking by the locking device must be released. To this end, the pressure inside the freezing compartment (F) or the refrigerating compartment (R) must be reduced to atmospheric pressure.

Therefore, since the decompression is necessary to open the freezer door, the freezer compartment F is opened on the decompression duct C1 connecting the freezer compartment F and the outside of the refrigerator to open and close the valve 90a for opening and closing the pipeline. Allow the outside of the refrigerator to communicate.

On the other hand, since decompression is essential to open the refrigerating compartment door, the refrigerating compartment (R) is opened by opening the on-off valve (90b) installed on the decompression duct (C2) connecting the refrigerating compartment (R) and the outside of the refrigerator to open and close the pipeline. Allow the outside of the refrigerator to communicate.

In addition, such decompression may form a mechanical structure in the door or the locking device such that the decompression is performed by the force when a physical force for releasing the locking device of the door is applied.

In this way, the pressure in the freezer compartment F or the refrigerating compartment R is reduced to the atmospheric pressure state, and thus noise and safety accidents due to sudden pressure changes even when the freezer compartment door 70a or the refrigerating compartment door 70b is released. It is possible to open the refrigerating compartment (R) in a soft, natural and safe state without.

In addition, according to the present embodiment, since sufficient moisture is supplied into the refrigerating chamber R by a humidifier provided separately, it helps to keep fresh vegetables and fruits.

The refrigerator of this embodiment, which operates as described above, has a higher pressure than the normal atmospheric pressure on the fruits or vegetables stored in the refrigerating chamber R, so that the fruits or vegetables are placed in a pressure-tight state, so that the water and the water evaporate or inherently This will effectively prevent the spread of scent and discharge of secretions.

In addition, the refrigerator of the present embodiment is a pressure higher than the normal atmospheric pressure to the frozen foods such as meat or fish in the freezer compartment (F), because the meat or fish is placed in a pressure-sealed state, so frozen foods such as meat or fish Water leakage from the inside becomes difficult, and freezer burn (freezing of meat or fish) can effectively suppress tissue changes due to sublimation of ice.

That is, when meat or fish or other foods are put in a freezer and frozen, the meat or fish is usually frozen (Freezer Burn) occurs to see the ice leaking to one side and clumped together. Because of this, the tissue changes, and when you eat meat or fish that has been frozen for a long time, you will get a bad smell and you will not be able to taste the same meat as the first. In addition, when frozen foods such as frozen dumplings or rice cake soup are frozen together, frost and ice stick together on one side, and it is easily broken due to tissue changes due to water loss. Therefore, if the air pressure in the freezer is higher than atmospheric pressure, the outflow of water from the inside of the food becomes difficult, and this freezer can also be suppressed.

On the other hand, when the refrigerating compartment door or the refrigerating compartment door is opened again, the door is closed and an electrical signal is sent to the microcomputer, and the microcomputer operates the air compressor 60 together with the refrigerating cycle to operate the freezer compartment F or the refrigerating compartment R. Compressed air is supplied back to the inside, and when the set target pressure is reached, the supply of compressed air is stopped.

Example 6

In the above [Example 1] to [Example 5], the air compressor 60 which supplies compressed air as the boosting means has been described as an example, but another boosting means will be described in the present embodiment.

FIG. 13 is a configuration diagram of a refrigerator in a refrigerator according to a sixth embodiment of the present invention, wherein the boosting means includes a nitrogen gas generator and a nitrogen gas generated from the nitrogen gas generator in a refrigerating chamber (R). ) Or a boosting duct (B) for sending to the freezer compartment (F).

Nitrogen gas supplied from the nitrogen gas generator to the target space, such as the refrigerating chamber or the freezing chamber, is also introduced into the cold air flow path in the front or rear of the evaporator to be introduced into the refrigerating chamber (R) or the freezing chamber (F) while the temperature is lowered. Do.

In this case, the pressure of the refrigerating chamber R or the freezing chamber F is increased not only by the nitrogen gas supplied to the refrigerating chamber R or the freezing chamber F, but also by the filling of the nitrogen gas in the refrigerating chamber R or the freezing chamber. (F) The amount of oxygen inside is reduced, which makes it possible to more effectively block the breathing of vegetables and fruits.

In addition, before filling the nitrogen gas, the inside of the chamber is vacuumed by a separate vacuum forming means, and oxygen and microorganisms are discharged, and then nitrogen gas is immediately charged, so that only nitrogen gas that is harmless to the human body or food is pressurized. By making it more effective.

In other words, the most effective packaging method of the currently packaged vinyl packaging products are known as nitrogen-packed packaging, and examples of commercially-packed nitrogen-packed products include cooked rice, potato chips, and waxed pies. The above nitrogen-filled packaging method is more effective than vacuum packaging because the vacuum packaging has a low pressure inside, which generates a force to attract the inside, and also draws air from the outside of the packaging vinyl to the inside. Permeation can not but occur, but the nitrogen-filled packaging is filled with nitrogen to increase the internal pressure, oxygen does not penetrate through the vinyl, because it acts to push out oxygen to enter.

In addition, the nitrogen-filled packaging is known as the most ideal storage method for fruit and vegetables, and is effective for greasy general snacks and wet products. This method of nitrogen filling packaging does not simply put nitrogen, but first forms a vacuum to discharge all the air, and then immediately fills and pressurizes nitrogen to be filled with harmless nitrogen without oxygen or microorganisms inside to maximize the storage effect. can do.

Therefore, in the above-described embodiments of the present invention, it is preferable to first vacuum the inside of the chamber for nitrogen filling, and for this purpose, a pressure reducing means having a different configuration and dimension than the pressure reducing means described in the above embodiments. This can be installed.

That is, referring to Figure 13, according to another embodiment of the decompression means for the vacuum in the refrigerator compartment of the refrigerator, the pressure reducing duct (C1) (C2) for connecting the freezer compartment and the refrigerator compartment and the outside of the refrigerator, respectively, It comprises a vacuum pump (V1) (V2) provided on the pressure reducing duct (C1) (C2).

On the other hand, as another decompression structure, the decompression duct connecting the freezer compartment (F) and the refrigerator compartment (R) and the outside of the refrigerator are connected from the freezer compartment and the refrigerator compartment, respectively, forming an integrated pipe in the middle, and a three-way valve is installed at the point of integration In the case where the freezing compartment or the refrigerating compartment may be selectively reduced in pressure, only one vacuum pump may be installed.

In addition, the decompression means for the vacuum inside the refrigerator includes a refrigerator (see FIG. 4) having a structure having a separate pressure-tight chamber (E / C) in the refrigerating chamber, a refrigerator dedicated to the refrigerating chamber (see FIGS. 5 and 6) or The same member can be applied to a freezer dedicated to a freezer compartment.

Of course, the decompression means for the in-vehicle vacuum may be applied not only for the refrigerating chamber R but also for the vacuum decompression for the nitrogen filling of the freezing chamber F.

Meanwhile, the nitrogen gas generator may be a nitrogen separator 65 which separates oxygen and nitrogen in the air introduced from the outside and supplies the same to the refrigerating chamber R or the freezing chamber F, which is a target space for nitrogen charging. have.

At this time, the nitrogen separator 65 requires a gas separation membrane module (65b) for separating them by using the difference between the diffusion rate of nitrogen and oxygen, and an air compressor (65a) for separating oxygen and nitrogen by the flow of compressed air. Instead of the air compressor (65a) may be provided with a vacuum pump (65c) for separating the oxygen and nitrogen in the air by a vacuum pressure. As shown in FIG. 13, when both the air compressor 65a and the vacuum pump 65c are provided, the air compressor 65a and the vacuum pump 65c may be selectively used. The gas separation membrane module may be composed of a hollow fiber membrane or a flat membrane.

On the other hand, as the nitrogen gas generator for supplying nitrogen gas so that the nitrogen gas is filled in the target space, such as a freezer compartment or a refrigerating chamber, it is also possible to apply a replaceable nitrogen tank (not shown) instead of the above-described nitrogen separator. . In other words, the nitrogen tank is installed in a replaceable state inside or outside the refrigerator to supply nitrogen to a refrigerating chamber or a freezing chamber as a target space, if necessary.

In the above [Example 1] to [Example 6], the air compressor 60 for supplying the compressed air and the nitrogen generator for generating and filling nitrogen as the boosting means have been described as an example. The present invention is not limited to the structure described in each embodiment, and various other structures and forms may be formed.

For example, as another embodiment of the boosting means, a blower for blowing wind, and a boosting duct B for sending air blown by the blower to the refrigerating chamber R, the freezing chamber F, or the chamber E / C. It is possible to be configured to include). That is, the pressure inside the refrigerating chamber R, the freezing chamber F, or the chamber E / C may be increased by the continuous blowing action by the blower.

On the other hand, the nitrogen gas generated by the configuration of the above [Example 6] can also be supplied to the dedicated chamber (E / C) installed in the refrigerating chamber.

In addition, although only the inlet is introduced into the freezer compartment through the freezer compartment evaporator in FIGS. 7 and 8 in relation to the above embodiments, this is for simplicity of the drawing, and substantially circulates along the cold air passage (A). It is similar to the refrigerator compartment side. That is, in FIG. 7 and FIG. 8, the air introduced into the freezing compartment is followed by a circulation process supplied to the freezing compartment after being re-introduced into the freezing compartment evaporator along the cold air flow path (not shown).

In addition, in [Example 2], the chamber E / C is described as a top opening / closing method by a lid, but it is of course possible to use a front opening / closing method.

And, in the above [Example 3] and [Example 4] described as a refrigerator dedicated to the refrigerating chamber, if only the set temperature is lowered, of course, it can be a refrigerator (ie, freezer) dedicated to the freezer compartment.

On the other hand, in [Example 5], when the pressure in the freezer compartment F reaches the set pressure and the pressure in the refrigerator compartment R does not reach the set pressure, the compressed air is no longer supplied to the freezer compartment F. Although the control valve 50 is provided to block the pipeline, the booster duct (that is, the booster flow path) connected to the air compressor 60 instead of the configuration as shown in [Example 5] as soon as the air compressor exits. Directly branched and connected to the refrigerating chamber side evaporator 40a and the freezing chamber side evaporator 40b, respectively, and may be configured to be provided with a control valve for controlling the flow path on the branched flow path. In this case, the pressures in the refrigerating compartment and the freezing compartment may be controlled completely separately.

As can be seen from the above embodiments, the refrigerating chamber R or the chamber (by making the chamber (E / C) separately provided in the refrigerating chamber (R) or the refrigerating chamber (R) in a pressure-tight state. While preventing moisture evaporation of fruits and vegetables stored in E / C), it is possible to store them in a fresh state for a long time by preventing the diffusion of secretions inherent in fruits or vegetables and leakage of secretions.

On the other hand, the present invention is not limited to the above-described embodiments, and various modifications, changes, and modifications are possible without departing from the scope of the technical spirit of the present invention.

In addition, the present invention is not limited to the above-mentioned foods, such as vegetables, fruits, meat or fish, and can be applied to any foods that can exhibit a similar effect.

The effects of the present invention are as follows.

First, by making the chamber separately provided in the refrigerating chamber (R) or the refrigerating chamber in a pressure-tight state to prevent the evaporation of moisture of fruits or vegetables stored in the internal space, and also to prevent the spread of secretion and discharge of inherent aromas of the fruits or vegetables. It is effective to prevent.

In addition, by making the frozen foods such as meat or fish stored in the freezer compartment F into a sealed state, it is difficult to leak moisture from the inside of the stored frozen foods, thereby effectively preventing a freezer burn. .

In general, in the case of vegetables, even when only 2% or more moisture evaporates, the leaves are drooped, and when the evaporation is more than 3%, the leaves dry phenomenon can be observed visually.

Therefore, the refrigerator of the present invention, fruit and vegetables such as fruits and vegetables, and meat through suppression and prevention of water evaporation of vegetables and fruits by pressurized sealing through compressed air or nitrogen filling, and suppression and prevention of frozen foods from frozen foods. And frozen foods such as fish can be stored in a fresh state for a long time, and provide convenience to the user.

In addition, according to the present invention, especially in the case of vegetables and fruits, it is difficult to store at home for a long time, so that they can not be eaten at home, resulting in a lot of waste in the country, which prevents a large economic saving effect and environmental protection. You will get the effect.

Claims (30)

A refrigerator comprising a refrigerating compartment for storing food, a door for opening and closing the refrigerating compartment, and a refrigerating cycle for cooling the refrigerating compartment; A boosting means for raising the air pressure in the refrigerating chamber above atmospheric pressure; And a locking device to prevent the door for opening and closing the refrigerating compartment from being opened when the refrigerating compartment is elevated. The method of claim 1, The boosting means, An air compressor for sucking the outside air to generate compressed air; And a boosting duct (B) for sending the compressed air generated by the air compressor to the refrigerating chamber. The method of claim 1, The boosting means, Blower; And a boosting duct (B) for sending the air blown by the blower to the refrigerating chamber. The method of claim 1, The boosting means, A nitrogen gas generator; And a boosting duct for sending the nitrogen gas generated in the nitrogen gas generator to the refrigerating chamber. The method of claim 1, And a decompression means for lowering the atmospheric pressure inside the refrigerating chamber elevated by the boosting means to atmospheric pressure or lower than atmospheric pressure. The method of claim 5, wherein The decompression means, Decompression duct (C) for connecting the refrigerator compartment and the outside of the refrigerator; And an on / off valve installed on the pressure reducing duct to open and close the pipe. The method of claim 5, wherein The decompression means, Decompression duct (C) for connecting the refrigerator compartment and the outside of the refrigerator; And a vacuum pump installed on the decompression duct. The method of claim 1, And a humidifier for supplying water into the refrigerating compartment. The method of claim 1, Refrigerator, characterized in that the airtight holding means for maintaining the airtight in the state where the pressure inside the refrigerator compartment is elevated. delete A refrigerator comprising a refrigerating compartment for storing food, a door for opening and closing the refrigerating compartment, and a refrigerating cycle for cooling the refrigerating compartment; A chamber dedicated to fruit and vegetable, which is provided to separately store and store fruit and vegetables such as fruits and vegetables in the refrigerating chamber, Boosting means for raising the pressure inside the chamber to an atmospheric pressure or higher; And a locking device for preventing the chamber from opening when the pressure inside the chamber is elevated. The method of claim 11, The boosting means, An air compressor for sucking the outside air to generate compressed air; A boosting duct for sending the compressed air generated by the air compressor to the chamber; And an on / off valve installed on the boosting duct to open and close the pipe. The method of claim 11, The boosting means, Blower; A boosting duct for sending the air blown by the blower to the chamber; And an on / off valve installed on the boosting duct to open and close the pipe. The method of claim 11, The boosting means, A nitrogen gas generator; A boosting duct for sending nitrogen gas generated from the nitrogen gas generator to the chamber; And an on / off valve installed on the boosting duct to open and close the pipe. The method of claim 11, And a decompression means for reducing the atmospheric pressure in the chamber elevated by the boosting means to an atmospheric pressure state. The method of claim 15, The decompression means, A pressure reduction duct connecting the chamber to the outside of the refrigerator or the chamber to the refrigerating chamber; And an on / off valve installed on the pressure reducing duct to open and close the pipe. The method of claim 11, And a humidifier (humidifier) for supplying moisture into the chamber. The method of claim 11, Refrigerator, characterized in that the airtight holding means for maintaining the airtight in the state where the pressure inside the refrigerator compartment is elevated. A refrigerator comprising: a freezer compartment for storing food, a door for opening and closing the freezer compartment, and a freezing cycle for cooling the freezer compartment; A boosting means for raising the air pressure inside the freezing chamber to an atmospheric pressure or higher; And a locking device for preventing the freezing compartment from opening when the pressure inside the freezing compartment is elevated. A refrigerating compartment for storing food, a door for opening and closing the refrigerating compartment, a refrigerating cycle for cooling the refrigerating compartment, a boosting means for raising the atmospheric pressure inside the refrigerating compartment above atmospheric pressure, and a microcomputer for controlling the refrigerating cycle and the boosting means. In the refrigerator control method comprising: a; Setting the temperature inside the fridge to the desired temperature, Operating the refrigeration cycle to reach a set temperature; Setting the internal pressure of the refrigerator compartment, And raising the internal pressure of the refrigerating compartment until the set pressure is reached. The method of claim 20, When the temperature inside the refrigerating chamber is out of a predetermined temperature, it is controlled to start the refrigeration cycle again, When the internal pressure of the freezer compartment is out of a predetermined range or more than a predetermined range, the control method of the refrigerator characterized in that the control to operate the boosting means again. The method of claim 20 or 21, The control method of the refrigerator, characterized in that the increase in the internal pressure of the refrigerating chamber is made by a medium harmless to the human body such as compressed air or nitrogen gas supplied into the refrigerating chamber. The method of claim 22, And controlling the inside of the refrigerating compartment to be vacuum before supplying the nitrogen gas. A refrigerating compartment for storing food, a door for opening and closing the refrigerating compartment, a refrigerating cycle for cooling the refrigerating compartment, a chamber provided separately in the refrigerating compartment, a boosting means for raising the atmospheric pressure inside the chamber above atmospheric pressure, and A refrigerator control method comprising a microcomputer for controlling a refrigeration cycle and boosting means; Setting the refrigerating compartment and chamber internal temperatures to a desired temperature, Operating the refrigeration cycle to reach a set temperature; Setting an internal air pressure of the chamber, And raising the internal air pressure of the chamber until the set air pressure is reached. The method of claim 24, When the temperature inside the refrigerator compartment deviates from the predetermined temperature inside the refrigerator compartment by more than a predetermined range, the refrigeration cycle is controlled to operate again. And when the air pressure inside the chamber deviates from the air pressure inside the predetermined chamber by a predetermined range or more, the control unit operates the boosting means again. The method of claim 24, The increase in the pressure inside the chamber is controlled by a medium harmless to human body such as compressed air or nitrogen gas supplied into the refrigerating chamber. The method of claim 26, And controlling the inside of the refrigerating compartment to be vacuum before supplying the nitrogen gas. A freezer compartment for freezing food, a door for opening and closing the freezer compartment, a freezing cycle for cooling the freezer compartment, a boosting means for raising the atmospheric pressure inside the freezer compartment above atmospheric pressure, and controlling the freezing cycle and the boosting means. A refrigerator control method comprising a microcomputer; Setting the freezer interior temperature to a desired temperature; Operating the refrigeration cycle to reach a set temperature; Setting the internal pressure of the freezer compartment, And raising the internal pressure of the freezer compartment until reaching a predetermined air pressure. The method of claim 28, The increase in the pressure inside the freezer compartment is controlled by a medium that is harmless to human body such as compressed air or nitrogen gas supplied into the freezer compartment. The method of claim 29, And controlling the inside of the freezing chamber to a vacuum prior to supplying the nitrogen gas.

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