CN205727878U - One is multi-functional freezes fresh-keeping-defrozing silo - Google Patents

Abstract

The utility model discloses a multifunctional freezing and fresh-keeping-thawing store, which is used for solving the problems of serious nutrition loss and low food quality during the freezing and thawing process of food. It includes a cold storage body and a freezing and thawing device installed inside the cold storage body. A shelf for placing food is arranged inside the cold storage body. The freezing and thawing device includes: a refrigeration device for generating cold air to lower the temperature in the cold storage body; It is used to increase the temperature and humidity in the cold storage body; the electric field device is used to generate an electric field so that the food placed on the shelf is in the environment of the electric field; when freezing, turn on the refrigeration device and the electric field device to make the food on the shelf The food is cooled and frozen in the environment of low temperature and electric field; when thawing, turn on the steam heating device and the electric field device, so that the frozen food on the shelf is in the environment of high temperature and electric field, and carry out heating and moisturizing thawing, and the electric field strength set during freezing is greater than that of thawing The electric field strength set at .

Description

A multi-functional freezer-thaw storehouse

technical field

The utility model belongs to the field of food freezing and thawing, in particular to a multifunctional freezing and fresh-keeping-thawing store.

Background technique

Food freezing refers to lowering the temperature of food to a certain predetermined temperature below the freezing point of food, so that most of the moisture in food freezes into ice crystals, so as to reduce the liquid moisture necessary for microbial activity and food changes, thereby prolonging the shelf life of food. shelf life. Since the freezing process is strictly affected by temperature, it is very important to change and control the temperature during the freezing process of food. For example, the water in animal and plant tissues exists in the space between the nucleus and the cell, either in a bound state or in a free state. During the freezing process, when the temperature drops to the freezing point of the food, some of the water that is weakly combined with the hydrocolloid or exists in a low-concentration solution, mainly the water in the intercellular space, will first form ice crystals. The freezing process of water is accompanied by the concentration process of the salt ion solution, so that the freezing temperature continues to decrease, and the ice crystals also grow up. If the ice crystal grows large enough that the cells are squeezed or punctured, there will be juice flow out during the thawing process, which we should try to avoid most of the time. The quick-freezing method commonly used at present can make ice crystal be unlikely to be too big. The maximum formation zone of ice crystals: generally -1°C to -5°C. Passing through this temperature range at different freezing rates will bring different changes to the food. Since there are many raw materials of food, and their tissue states (including cell structure) are also different, therefore, the speed of freezing is also different. The choice of freezing conditions is mainly to "strengthen strengths and avoid weaknesses", and try to choose the optimal solution.

Thawing is a necessary process for food after freezing. At present, the commonly used thawing methods are: air natural thawing method, water thawing method, microwave thawing method, ultra-high pressure thawing method, etc. However, there are many disadvantages in these methods. The air natural thawing method is to expose the frozen meat directly to the air, which will cause the surface of the meat to oxidize and discolor. In summer, due to the high ambient temperature and the rapid proliferation of microorganisms, the quality of the raw meat after thawing will decline. In winter, due to the low ambient temperature, it will Affect the thawing rate and prolong the production cycle. The water thawing method is faster than the air thawing method, but it will make the meat gray and cause microbial contamination, and easily cause the loss of nutrients; at the same time, it also wastes a lot of water resources. Although the microwave thawing method has fast thawing speed and high efficiency, it is easy to cause uneven thawing and local overheating due to differences in the penetration and absorption of microwaves to water and ice. Although the ultra-high pressure thawing method has a short thawing time and has little negative impact on product quality, it has high requirements for equipment and high production and operating costs, and its industrial application in China is still immature.

There are at least the following problems in the prior art: the nutrition loss of the food is serious during the freezing and thawing process, and the quality of the food is not high.

Utility model content

The utility model provides a multifunctional freezing and fresh-keeping-thawing storehouse, which is used to solve the problems of serious nutrition loss and low food quality during the freezing and thawing process of food.

The technical scheme provided by the utility model is:

A multi-functional freezing and fresh-keeping-thawing store, including a cold storage body and a freezing and thawing device installed inside the cold storage body, the inside of the cold storage body is provided with a shelf for placing food, and the freezing and thawing device includes:

A refrigeration device, used to generate cold air to lower the temperature in the cold storage body;

A steam heating device is used to increase the temperature and humidity in the cold storage body;

An electric field device is used to generate an electric field so that the food placed on the shelf is in the environment of the electric field;

Wherein, when freezing, the refrigeration device and the electric field device are turned on, so that the food on the shelf is cooled and frozen in an environment of low temperature and electric field; when thawing, the steam heating device and the electric field device are turned on, so that The food frozen on the shelf is in an environment of high temperature and electric field, and is heated and moisturized for thawing, and the electric field strength set during freezing is greater than that set during thawing.

Preferably, in the multi-functional frozen fresh-keeping-thawing warehouse, the freezing and thawing device also includes:

A temperature and humidity sensor, which is used to detect the temperature and humidity in the cold storage body;

Wherein, when thawing, if the temperature and humidity sensor detects that the temperature inside the cold storage body reaches the first preset temperature value, the refrigeration device is turned on to reduce the temperature inside the cold storage body to the second preset temperature value. temperature value, the temperature in the cold storage body is maintained between the first preset temperature value and the second preset temperature value through the steam heating device and the refrigeration device, and the cold storage body The humidity inside is greater than a preset humidity value.

Preferably, in the multifunctional freezer-thaw store, the temperature and humidity sensor is also provided with an active temperature probe, which is used to insert into the center of the food to detect the temperature of the center of the food; Wherein, when freezing, when the temperature of the central part of the food reaches a third preset temperature, the freezing process ends; during thawing, when the temperature of the central part of the food reaches a fourth preset temperature, the thawing ends.

Preferably, in the described multifunctional freezing fresh-keeping-thawing storehouse, the refrigerating device includes:

Refrigeration unit and air supply fan, which are used to generate cold air;

The delivery pipe is used to deliver the generated cold air to the interior of the cold storage body.

Preferably, in the multifunctional freezer-thaw store, a baffle is provided at one port of the delivery pipeline and an adjustment device for adjusting the baffle to change the size and direction of the air outlet at the port of the delivery pipeline. part.

Preferably, in the multi-functional freezing fresh-keeping-thawing storehouse, the steam heating device includes:

steam pipes for transporting hot steam;

A steam distributor is connected with the steam pipeline, and the steam in the steam pipeline is sprayed onto the frozen food on the shelf through the steam distributor.

Preferably, in the multifunctional freezer-thawing store, the steam distributor is provided with a plurality of steam nozzles, and the steam in the steam pipeline is sprayed to the shelf through the plurality of steam nozzles on the steam distributor. on frozen food.

Preferably, in the multifunctional freezer-thaw store, the electric field device includes an electrode plate and an AC power supply connected to the electrode plate.

Preferably, in the multifunctional freezer-thaw storehouse, the refrigerating device is installed on the top wall of the freezer body, and there are multiple sets of the air blower and the conveying pipeline.

Preferably, in the multifunctional freezer-thawing store, electrode plates are arranged on the opposite side walls of the cold store body and on the top wall of the cold store body, and when freezing, the cold store body is opened The electrode plate power supply on the side wall and the top wall, when thawing, turn on the electrode plate power supply on the side wall of the cold storage body.

Preferably, in the multifunctional freezer-thaw storehouse, the shelf for placing food is a movable shelf, and there are multiple shelves.

Preferably, in the multi-functional freezer fresh-keeping-thawing store, there are two steam pipes and two steam distributors, which are respectively set on the opposite side walls of the cold storage body, and are set on the The upper position inside the cold storage body.

Preferably, in the multi-functional freezer-thaw store, the baffles are provided with a plurality of them, which are equidistantly distributed at the port of the conveying pipeline, and the angle between the baffles and the horizontal plane is set to 60° .

Preferably, in the multifunctional freezer-thaw store, the temperature and humidity sensor, the refrigeration device, the steam heating device and the electric field device are all electrically connected to a microcontroller, wherein, if the freezing Finally, when the temperature and humidity sensor detects that the temperature inside the storage body rises to a fifth preset temperature, the refrigeration device and the electric field device are automatically turned on.

Preferably, in the multifunctional freezer-thawing store, the refrigerating unit is a variable frequency refrigerating unit, and the air supply fan is a frequency conversion air supply fan.

The multi-functional freezing and fresh-keeping-thawing storage described in the utility model sets the refrigeration device and the steam heating device inside the cold storage body together, so the freezing and thawing processes of food are all carried out in the same cold storage body, which reduces the secondary consumption of food. Handling and loss, to maintain the freshness of food to the greatest extent. Since an electric field device is provided to generate an electric field so that the food placed on the shelf is in an electric field environment, and the electric field device is turned on during the freezing and thawing process, the effect of the electric field is increased during the freezing and thawing process of the food , so that the speed of freezing and thawing of food raw materials can be accelerated, the loss of thawing juice is less, the energy consumption is reduced, the food quality is improved, the freshness of the food is kept to the greatest extent, the growth of microorganisms is effectively inhibited, and the production efficiency and food quality are greatly improved. quality. In addition, the cold storage is simple in structure, easy to operate, cheap in construction cost and low in operation cost. Therefore, it is of great significance for high-quality food preservation and storage. The setting of the temperature and humidity sensor makes the control of the temperature and humidity of the food in the cold storage body more accurate during the freezing and thawing process, and further realizes the preservation and thawing of the food. The utility model solves the problems of severe nutrient loss, slow thawing speed, serious microbial pollution, high production cost and low quality of thawed meat samples when the existing frozen food is thawed, realizes minimally invasive freezing and fresh-keeping thawing of food, and improves the economy of the enterprise Benefits and quality of thawed food.

Description of drawings

Fig. 1 is the structure schematic diagram of the multi-functional freezing fresh-keeping-thawing storehouse described in the utility model.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1, the multi-functional freezing and fresh-keeping-thawing storeroom provided by the embodiment of the present utility model comprises a freezer body 4 and a freeze-thaw device installed in the freezer body, the inside of the freezer body is provided with a shelf 1 for placing food, and the freeze-thaw device includes : Refrigeration device, used to generate cold air to reduce the temperature in the cold storage body; steam heating device, used to increase the temperature and humidity in the cold storage body; electric field device, used to generate an electric field to keep the food placed on the shelf In the environment of electric field;

Among them, when freezing, turn on the refrigeration device and the electric field device, so that the food on the shelf is cooled and frozen in the environment of low temperature and electric field; In the environment, warm up and moisturize to thaw.

The refrigeration device and the steam heating device are installed inside the cold storage body together, so the freezing and thawing process of the food is carried out in the same cold storage body, which reduces the secondary handling and loss of food, and can maintain the freshness of the food to the maximum extent. Since an electric field device is provided to generate an electric field so that the food placed on the shelf is in an electric field environment, and the electric field device is turned on during the freezing and thawing process, the effect of the electric field is increased during the freezing and thawing process of the food , so that the speed of freezing and thawing of food raw materials can be accelerated, the loss of thawing juice is less, the energy consumption is reduced, the food quality is improved, the freshness of the food is kept to the greatest extent, the growth of microorganisms is effectively inhibited, and the production efficiency and food quality are greatly improved. quality. In addition, the cold storage is simple in structure, easy to operate, cheap in construction cost and low in operation cost. Therefore, it is of great significance for high-quality food preservation and storage.

Continuing to refer to Fig. 1, in another embodiment of the utility model embodiment, the freeze-thaw device also includes:

Temperature and humidity sensor 17, which is used to detect the temperature and humidity in the cold storage body; wherein, during thawing, if the temperature and humidity sensor 17 detects that the temperature inside the cold storage body reaches the first preset temperature value, the refrigeration device is turned on to make the cold storage body The internal temperature drops to the second preset temperature value, and the temperature in the cold storage body is maintained between the first preset temperature value and the second preset temperature value through the steam heating device and the refrigeration device, and the humidity in the cold storage body greater than a preset humidity value. The temperature and humidity sensor 17 is also provided with a movable temperature probe 18, which is used to insert into the center of the food to detect the temperature of the center of the food. When freezing, when the temperature of the center of the food reaches a third preset temperature , the freezing process ends, and when thawing, when the temperature of the central part of the food reaches a fourth preset temperature, the thawing ends.

The setting of the temperature and humidity sensor makes the control of the temperature and humidity of the food in the cold storage body more accurate during the freezing and thawing process, and further realizes the preservation and thawing of the food. During the thawing process, when the temperature inside the cold storage body rises to the first preset temperature value, the refrigeration device is turned on to reduce the temperature inside the cold storage body to the second preset temperature value, and the steam heating device and the refrigeration device jointly adjust the temperature inside the cold storage body. temperature and humidity, so that the temperature in the cold storage body is always maintained between the first preset temperature value and the second preset temperature value, and the humidity is greater than a preset humidity value. This cycle continues until the temperature at the center of the food reaches the fourth preset temperature, and the thawing process ends. When freezing, when the temperature of the central part of the food reaches the third preset temperature, the freezing process ends. The values of the first preset temperature, the second preset temperature, the third preset temperature and the fourth preset temperature can be specifically set according to the actual situation and according to the type of food, and are not specifically limited here. For example, when freezing and thawing meat, the first preset temperature can be set to 8°C, the second preset temperature can be set to 2°C, the third preset temperature can be set to -15°C, and the fourth preset temperature can be set to -2°C , preset humidity value >90%.

Further, the refrigerating device includes: a refrigerating unit 16 and a blower fan 13, which are used to generate cold air; and delivery pipes, which are used to transport the generated cold air to the interior of the cold storage body. A baffle 12 and an adjustment component 9 for adjusting the baffle to change the size and direction of the wind at the port of the delivery pipeline are arranged at one port of the delivery pipeline 14 . A plurality of baffles 12 can be provided, and they are equidistantly distributed at the port of the conveying pipeline. The angle between the baffle 12 and the horizontal plane can be set to 60°. The adjusting part 9 controls the opening of the baffle to control the port 10 of the conveying pipeline The size of the air outlet, the adjusting part 9 is not specifically limited here, it can be set according to the actual situation, for example, it can be set as an adjusting bolt. The refrigerating device is installed on the top wall of the cold storage body 4, and there are multiple blower fans 13 and delivery pipes 14. The specific number can be set according to actual conditions, and is not limited here. The blower blower 13 and the refrigerating unit 16 can be arranged on the outside of the cold storage body 4, and the delivery pipe 14 runs through the top wall of the cold storage body 4 to deliver the cold wind to the interior of the cold storage body. The axial direction of the delivery pipe 14 is set perpendicular to the top wall of the cold storage body 4. The refrigerating unit 16 can also be arranged inside the cold storage body 4, and can be arranged according to actual conditions. The refrigerating unit 16 is a variable frequency refrigerating unit, and the blower fan 13 is a variable frequency blower, which can adjust the cooling temperature and the blowing intensity.

Further, the electric field device includes an electrode plate 3 and an AC power supply 15 connected to the electrode plate. Electrode plates 3 are arranged on the opposite side walls of the cold storage body 4 and on the top wall of the cold storage body 4. When freezing , turn on the power supply of the electrode plates on the side wall and the top wall of the cold storage body, and turn on the power supply of the electrode plates on the side wall of the cold storage body when thawing.

It should be noted that the existence of an electric field can accelerate the freezing and thawing of food. When freezing, turn on the AC power supply 15 on the side wall and the top wall of the cold storage body, and the water molecules inside the food will be in an electronic resonance environment with the same frequency. The formation becomes uniform and fine, the cell wall is not easy to be pierced by fine ice crystals, and the integrity of the cell membrane ensures no loss of juice and color. When thawing, turn on the AC power supply 15 on the side wall of the cold storage body, and an ion wind can be generated between the two electrode plates. After the ion wind reaches the ice crystal, it can promote the accelerated dissolution of the ice crystal, and because the ice crystal particle is very small when it is frozen more quickly dissolved.

Further, the temperature and humidity sensor 17, the refrigeration device, the steam heating device and the electric field device are all electrically connected to a microcontroller (not marked in FIG. 1 ).

When freezing, place the food that needs to be processed on the shelf. The shelf used to place the food is a movable shelf. Push the shelf into the interior of the storage body, and insert the movable temperature probe into the center of the food to be processed. Close the door of the library body. Turn on the AC power supply, turn on the refrigerating unit and the blower fan, and at this moment, the cold air blows evenly to the food on the shelf along the conveying pipeline through the opened part of the baffle at the port of the conveying pipeline. Under the action of the AC electric field, the vibration effect of water molecules makes the water in the food to be treated freeze rapidly, but only small ice crystals are formed. After the center of the food to be processed reaches the third preset temperature, the AC power supply, the refrigerating unit, and the blower fan are turned off. If as time goes by, when the temperature and humidity sensor detects that the temperature inside the storage body rises to a fifth preset temperature, the refrigeration unit, the air supply fan, and the switch of the AC power supply will be automatically turned on to maintain the storage temperature of the processed food , the fifth preset temperature can be specifically set according to actual conditions, and is not specifically limited here.

Further, the steam heating device includes: a steam pipeline 7, which is used to transmit hot steam; a steam distributor 6, which is connected with the steam pipeline 7, and the steam in the steam pipeline is sprayed onto the frozen food on the shelf through the steam distributor 6 . The steam distributor is provided with a plurality of steam nozzles 5, and the steam in the steam pipeline 7 is sprayed onto the frozen food on the shelf through the plurality of steam nozzles 5 on the steam distributor 6. The size of the spout can vary. There are two steam pipes 7 and two steam distributors 6 respectively, which are respectively arranged on the opposite side walls of the cold storage body, and are arranged at the upper position inside the cold storage body. The number of steam pipes 7 and steam distributors 6 can be set according to actual conditions.

If the frozen food needs to be thawed, the AC power supply 15 is turned on to generate an AC electric field between the two opposite electrode plates 3. The intensity of the AC electric field at this time is different from that used for freezing. Open the valve of the steam pipeline, and the decompressed steam enters the steam distributor 6 through the steam pipeline 7, and then evenly sprays down through the multiple steam nozzles 5 on the steam distributor 6 to the food placed on the shelf that needs to be thawed. On the surface of the processed food, heat and humidify the food to be thawed. When the temperature and humidity sensor detects that the temperature inside the storage body has risen to the first preset temperature value, the refrigeration device is turned on, so that the temperature inside the cold storage body drops to the second preset temperature value, and the steam heating device and the refrigeration device are jointly adjusted. The temperature and humidity inside the cold storage body keeps the temperature inside the cold storage body between the first preset temperature value and the second preset temperature value. The humidity is greater than a preset temperature value, and the preset humidity value is not specified here. It can be set according to the actual situation.

A steam distributor protective plate 8 is arranged outside the steam distributor 6 to prevent steam from condensing on the surface of the steam distributor 6 and causing pollution. The electrode plate 3 is also provided with an electrode plate protective cover 2, in order to prevent the electrode plate from being damaged and contacted by personnel, which may cause danger. An air blower guard 11 is arranged outside the air blower 13 .

In a word, the embodiment of the utility model solves the problems of severe nutrient loss, slow thawing speed, serious microbial contamination, high production cost and low quality of thawed meat samples when thawing frozen food, realizes minimally invasive freezing and fresh-keeping thawing of food, and improves Improve the economic benefits of the enterprise and the quality of thawed food.

Although the embodiment of the present utility model has been disclosed as above, it is not limited to the use listed in the description and the implementation, and it can be applied to various fields suitable for the present utility model. For those familiar with the art, Further modifications can be readily effected, so the invention is not limited to the specific details and examples shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims (15)

1. one kind multi-functional is freezed fresh-keeping-defrozing silo, it is characterised in that including freezer body and be arranged on the thawing apparatus that freezes of described freezer body interior, described freezer body interior is provided with the shelf for placing food, described in freeze thawing apparatus and include:

Refrigerating plant, is used for producing cold wind and makes the intrinsic temperature of described freezer reduce；

Steam heater, is used for making the rising of described freezer intrinsic temperature, humidity increase；

Electric field arrangement, makes the food being placed on described shelf be in the environment of electric field for producing electric field.

The most multi-functional freeze fresh-keeping-defrozing silo, it is characterised in that described in freeze thawing apparatus and also include:

Temperature Humidity Sensor, it is used for detecting the intrinsic humiture of described freezer.

The most multi-functional freezing fresh-keeping-defrozing silo, it is characterised in that described Temperature Humidity Sensor is additionally provided with the temperature probe of an activity, it is for being inserted into the centre of described food for detecting the centre temperature of described food.

The most multi-functional freeze fresh-keeping-defrozing silo, it is characterised in that described refrigerating plant includes:

Refrigeration unit and breeze fan, it is used for producing cold wind；

Conveyance conduit, it for being delivered to described freezer body interior by the cold wind of generation.

The most multi-functional freeze fresh-keeping-defrozing silo, it is characterised in that at the Single port of described conveyance conduit, be provided with baffle plate and change described conveyance conduit port air-out size and the regulation parts of wind direction for regulating described baffle plate.

The most multi-functional freeze fresh-keeping-defrozing silo, it is characterised in that described steam heater includes:

Jet chimney, it is used for transmitting vapours；

Steam distributor, it is connected with described jet chimney, and the steam in described jet chimney is ejected on the frozen food on described shelf by steam distributor.

The most multi-functional freeze fresh-keeping-defrozing silo, it is characterized in that, being provided with multiple steam nozzle on described steam distributor, the steam in described jet chimney is ejected on the frozen food on described shelf by the multiple steam nozzles on steam distributor.

The most multi-functional freeze fresh-keeping-defrozing silo, it is characterised in that described electric field arrangement includes battery lead plate and connects the alternating current power supply of described battery lead plate.

9. multi-functional as described in claim 4 or 5 freezes fresh-keeping-defrozing silo, it is characterised in that described refrigerating plant is arranged on the roof of described freezer body, and described breeze fan and described conveyance conduit are provided with multiple.

The most multi-functional freeze fresh-keeping-defrozing silo, it is characterised in that on the two side that described freezer body interior is relative and on the roof of described freezer body, be provided with battery lead plate.

11. the most multi-functional freeze fresh-keeping-defrozing silo, it is characterised in that the described shelf for placing food is moveable shelf, and described shelf is provided with multiple.

12. the most multi-functional freeze fresh-keeping-defrozing silo, it is characterized in that, described jet chimney and described steam distributor are each provided with two, are separately positioned on the two side that described freezer body is relative, and are arranged on the top position of described freezer body interior.

13. the most multi-functional freeze fresh-keeping-defrozing silo, it is characterised in that described baffle plate is provided with multiple, and it is distributed in described conveyance conduit port equally spacedly, and described baffle plate is set to 60 ° with angle of horizontal plane.

14. the most multi-functional freeze fresh-keeping-defrozing silo, it is characterised in that described Temperature Humidity Sensor, described refrigerating plant, described steam heater and described electric field arrangement all electrically connect with a microcontroller.

15. the most multi-functional freeze fresh-keeping-defrozing silo, it is characterised in that described refrigeration unit is the refrigeration unit of frequency conversion, and described breeze fan is the breeze fan of frequency conversion.