WO2016082536A1

WO2016082536A1 - Dry storage apparatus and ventilation method thereof

Info

Publication number: WO2016082536A1
Application number: PCT/CN2015/081875
Authority: WO
Inventors: 赵发; 杨发林; 张奎; 徐志国
Original assignee: 青岛海尔股份有限公司
Priority date: 2014-11-26
Filing date: 2015-06-18
Publication date: 2016-06-02
Also published as: CN104567240B; CN104567240A

Abstract

A dry storage apparatus (30) and a ventilation method thereof. The dry storage apparatus (30) comprises a shell defining a drying chamber, the shell being provided with an air supply hole (33). The ventilation method of the dry storage apparatus (30) comprises: acquiring a starting signal for triggering the dry storage device(30) to ventilate; opening the air supply hole (33) according to the starting signal, to supply a gas cooled by a cold source to the drying chamber; and measuring the temperature in the drying chamber, and closing the air supply hole (33) of the drying chamber when the temperature is lower than a first preset temperature value to heat the drying chamber in a sealing state.

Description

Dry storage device and air exchange method thereof

Technical field

The invention relates to the technical field of refrigerators, in particular to a dry storage device and a method for changing the same.

Background technique

Along with consumers' expectations for a healthier lifestyle, the proportion of dry goods such as alfalfa, tea, shiitake mushrooms, longan and cordyceps is gradually increasing in the diet structure. However, these dry food ingredients are very difficult to store. If stored at room temperature, in the case of poor ventilation, the storage time is long and it is easy to change color and deteriorate, resulting in loss of nutrients. If placed in the freezer of the refrigerator, it is easy to be in the refrigerator. The effects of food cause moisture, causing mildew and deterioration. How to store dry ingredients for a long time is a problem to be solved.

In order to solve this problem, in the prior art, a compartment for increasing the humidity of the refrigerator based on the refrigeration function of the refrigerator has appeared, for example, a separate closed space is formed in the refrigerator compartment of the refrigerator as a drying chamber, and when the drying chamber is closed, the refrigerator compartment is closed. Air with a relatively high relative humidity cannot enter the drying chamber to maintain the drying of the dry indoor air.

The drying chamber constructed in the prior art forms a dry environment with a relatively low relative humidity in the closed space by blowing a cold air having a relatively low temperature into the drying chamber and then utilizing the principle of relative humidity changing with temperature. However, the traditional air supply control does not take into account the moisture contained in the articles placed in the drying chamber and the sealing effect of the drying chamber. Frequently, long-time air supply causes wasted electric energy or the air supply time is too short to fully replace the humidity in the drying chamber. The air causes a problem of poor drying. In view of the above problems, an effective solution has not been proposed in the prior art.

Summary of the invention

In view of the above problems, the present invention has been made in order to provide a method of changing the air of a dry storage device and a corresponding dry storage device that overcomes the above problems or at least partially solves the above problems.

A further object of the invention is to improve the drying effect of the dry storage device.

Another further object of the invention is to reduce the electrical energy consumed by the dry storage device.

According to one aspect of the invention, a method of changing the air of a dry storage device is provided. The dry storage device includes a casing defining a drying chamber, and the air outlet is disposed on the casing to pass through the air outlet The gas is supplied to the drying chamber. The method for changing the air of the dry storage device comprises: obtaining a start signal for triggering the change of the air in the dry storage device; opening the air supply port according to the start signal to supply the gas cooled by the cold source to the drying chamber; measuring the temperature in the drying chamber, and After the temperature is lower than the first preset temperature value, the drying chamber air outlet is closed to raise the temperature of the drying chamber in a sealed state.

Optionally, the activation signal includes: a temperature overrun signal in which the temperature in the drying chamber is higher than the second preset temperature value, wherein the second preset temperature is higher than the first preset temperature.

Optionally, the activation signal includes: a humidity overrun signal whose relative humidity value in the drying chamber is higher than a preset humidity value.

Optionally, the start signal includes: a timing signal that reaches a preset interval time after the last wind change is completed.

Optionally, the activation signal includes a status signal that the housing of the dry storage device changes from an open state to a closed state.

Optionally, the opening of the drying chamber air outlet according to the activation signal comprises: opening the air supply opening promptly or delaying after obtaining the activation signal.

Optionally, the first preset temperature value is preset according to the temperature of the cooling chamber cold source to ensure that the air cooled by the cold source is sufficient to replace the original air in the drying chamber when the air outlet is closed.

According to another aspect of the invention, a dry storage device is also provided. The dry storage device includes: a casing defining a drying chamber, the casing is provided with a blowing port for supplying gas to the drying chamber through the air blowing port, and the temperature measuring module is configured to measure the temperature in the drying chamber, and the air blowing port is configured to : opening after starting the activation signal for triggering the air change of the dry storage device, supplying the gas cooled by the cold source to the drying chamber, and closing after the temperature is lower than the first preset temperature value, so that the drying chamber is in a sealed state Warm up.

Optionally, the dry storage device further includes any one or more of the following trigger modules: a temperature triggering module configured to generate a start signal when the temperature measured by the temperature measuring module is higher than the second preset temperature value, where The second preset temperature is higher than the first preset temperature of the drying chamber; the timing triggering module is configured to generate a start signal when the time after the last wind change is completed reaches a preset interval time; the humidity trigger module is configured to measure the dry indoor Relative humidity, and generating a drying chamber start signal when the measured relative humidity value is higher than the preset humidity value; the opening and closing trigger module is configured to detect the opening and closing state of the housing, and close the housing after detecting the picking and placing object After the start signal is generated.

Optionally, the dry storage device is disposed in a refrigerating chamber of the refrigerator, and the cold source includes a refrigerating evaporator or a freezing chamber of the refrigerator.

The air exchange method of the dry storage device of the invention opens the air change according to the start signal for triggering the air change of the dry storage device, and controls the air change according to the temperature control, thereby ensuring that the sent cold air can completely replace the humid air in the drying room. Therefore, after the end of the wind change, the relative humidity in the drying chamber can be ensured to meet the requirement of storing dry goods for a long time, and the long-time air supply can be avoided, and the electric energy used for cooling and air supply is consumed, thereby effectively preventing mildew and moisture regain of food.

Further, the air exchange method of the dry storage device of the present invention flexibly adopts the temperature, humidity, time, and drying chamber opening and closing signals as the start signal for triggering the air change, which is favorable for the maintenance of the dry environment and the long-term preservation of the dry goods.

Further, the triggering temperature for controlling the opening and closing of the air outlet, that is, the first preset temperature value and the second preset temperature value, may be preset according to the temperature of the cold room of the drying chamber and the temperature of the refrigerator environment where the cold source is located. In order to ensure that the air cooled by the cold source is fully replaced when the air supply port is closed, the control is more precise and meets the storage requirements of the dry storage device.

The above as well as other objects, advantages and features of the present invention will become apparent to those skilled in the <

DRAWINGS

Some specific embodiments of the present invention are described in detail below by way of example, and not limitation. The same reference numbers in the drawings identify the same or similar parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. In the figure:

1 is a schematic view showing the principle of drying of a dry storage device according to an embodiment of the present invention;

2 is a schematic front view of an air-cooled refrigerator in which a dry storage device is located according to an embodiment of the present invention;

Figure 3 is a schematic cross-sectional view taken along line A-A of Figure 2;

Figure 4 is a schematic partial enlarged view of the portion C shown in Figure 3;

Figure 5 is a control block diagram of a dry storage device in accordance with one embodiment of the present invention;

6 is a schematic air duct system diagram of a drying chamber air supply damper of an air-cooled refrigerator according to an embodiment of the present invention;

Figure 7 is a schematic air duct system diagram of a drying chamber air supply damper of an air-cooled refrigerator according to an embodiment of the present invention;

Figure 8 is a schematic air duct system diagram taken along line B-B of Figure 2;

9 is a flow chart of a method of changing air of a dry storage device according to an embodiment of the present invention; and

Figure 10 is an alternate flow diagram of a method of changing the air of a dry storage device in accordance with one embodiment of the present invention.

detailed description

The embodiment provides a dry storage device, which is arranged in a refrigerator, especially an air-cooled refrigerator, and provides a good storage environment for dry goods such as alfalfa, tea, mushrooms, longan, and Cordyceps sinensis. The drying principle is that the gas cooled by the cold source is sent to a relatively high temperature closed environment, and as the low temperature gas gradually heats up in the closed space, the relative humidity thereof is lowered, and the drying effect is effectively formed.

1 is a schematic view showing the principle of drying of a dry storage device according to an embodiment of the present invention. FIG. 1 shows the relationship between various parameters of wet air by a graph, with the temperature as the ordinate and the moisture content as the abscissa. The relative humidity line cluster is shown, and under a certain pressure value, as the temperature increases, the moisture content in the humid air increases accordingly. In a closed environment, the moisture content of the air (generally referred to as absolute humidity) is constant with temperature rise, that is, in a closed environment, the moisture content of the air does not change with temperature rise. For example, the two points a and b in Figure 1 are on a vertical line, and point a (-18 ° C, 85% RH) is the point of low temperature air in the enclosed space after the end of ventilation, point b (5 ° C, 15% RH) is the air state point of the enclosed space after the gas temperature rises. It can be seen that the temperature of the closed environment rises from -18 °C to 5 °C, and the relative humidity of the closed environment is reduced from 85% RH to 15% RH, thereby obtaining an increase in the air temperature in a closed environment, which can effectively reduce the relative humidity. . That is to say, if the closed environment is filled with a gas having a temperature of -18 ° C and a relative humidity of 85% RH, the temperature rises, and when the temperature rises to 5 ° C, the theoretical relative humidity is lowered to 15% RH. While -18 ° C can generally be the temperature of the freezer or evaporator in the refrigerator, and 5 ° C can generally be the temperature of the refrigerator freezer. With this physical property, the storage environment of the dry storage device in this embodiment can be achieved.

2 is a schematic front view of an air-cooled refrigerator in which a dry storage device is included, which includes a refrigerating compartment 20 and a freezing compartment 10, in accordance with one embodiment of the present invention. A refrigerating compartment door 24 and a freezing compartment door 14 are provided at the front opening of the refrigerating compartment 20 and the freezing compartment 10 for opening or closing the refrigerating compartment 20 and the freezing compartment 10, respectively. The refrigerating compartment 20 may be disposed laterally adjacent to the freezing compartment 10, or the refrigerating compartment 20 may be disposed laterally of the freezing compartment 10. A partition 12 is provided between the refrigerating compartment 20 and the freezing compartment 10.

As will be understood by those skilled in the art, the air-cooled refrigerator 100 of the embodiment of the present invention may further include a refrigeration cycle system and a duct 60 (refer to FIG. 8). The refrigeration cycle system may include, for example, a compressor (not shown), a condenser (not shown), a throttle element (not shown), and an evaporator. 50 (refer to Figure 8). The air-cooled refrigerator 100 may also be provided with a blower 40 (refer to FIG. 8) located in the air duct 60 for blowing the airflow cooled and dehumidified by the evaporator 50 to the refrigerating compartment 20 and/or the freezing compartment 10.

In particular, the air-cooled refrigerator 100 may further include a dry storage device 30 having a separate enclosed space, the dry storage device 30 defining an enclosed space (hereinafter referred to as a drying chamber), and the dry storage device 30 being disposed in the refrigerating chamber 20 In the interior space. Fruit and vegetable foods are stored in the refrigerating compartment 20, so that the relative humidity in the refrigerating compartment 20 is high. The upper space of the refrigerating compartment 20 has a higher relative humidity than its lower space. Therefore, the dry storage device 30 can be preferably disposed in the space in the lower portion of the refrigerating chamber 20, that is, the height position at which the top plate of the drying storage device 30 (see the top plate 322 in FIG. 4) is located in the refrigerating chamber 20. It does not exceed the lower third or half of the entire height of the internal space of the refrigerating compartment 20.

3 is a schematic cross-sectional view taken along line A-A of FIG. 2, and FIG. 4 is a schematic partial enlarged view of C shown in FIG. Referring to Figures 3 and 4, in some embodiments, the dry storage device 30 can be constructed from a drawer-type sealed container. The dry storage device 30 can include a drawer body 31 and a female housing 32 (as will be understood by those skilled in the art, the drawer body 31 and the female housing 32 can collectively form a housing for the drying chamber that defines the drying chamber) . The drawer body 31 may have a cavity for receiving an item to be stored and having a top opening. The female housing 32 can have a backing plate 321 and a top plate 322, a bottom plate 323, and two opposing lateral side plates joined to the backing plate 321 at respective rear ends to form a cavity that can pullably receive the drawer body 31. The front end of the female housing 32 is open, and the drawer body 31 can be pulled out of the female housing 32 in the front-rear direction of the refrigerating chamber 20 and housed in the female housing 32 (in the female housing 32). In some embodiments, the drawer body 31 may be provided with a drawer door 311 for pulling the drawer body 31, and a sealing strip 37 is disposed at the edge of the drawer door 311. Thus, when the drawer body 31 and the female housing 32 are closed, that is, when the drawer body 31 is pushed into the female housing 32, the sealing strip 37 on the drawer door 311 can be coupled to the top plate 322 and the bottom plate of the female housing 32. 323. The front ends of the two opposite lateral side plates are sealingly fitted or sealed at the front end opening of the female housing 32 to substantially seal the dry storage device 30.

In some embodiments, slides may be provided on the two lateral walls of the drawer body 31, and correspondingly the slide rails are mounted on the inner surfaces of the two opposite lateral side panels of the female housing 32 such that the drawer body 31 It is slidably mounted to the socket housing 32.

In a further embodiment, the bottom plate 323 of the female housing 32 of the dry storage device 30 is disposed adjacent the bottom surface of the interior space of the refrigerating chamber 20. That is, the bottom of the female housing 32 of the dry storage device 30 The plate 323 is disposed close to the bottom surface of the internal space of the refrigerating chamber 20 with a gap therebetween, that is, a gap exists between the bottom plate 323 and the bottom surface of the internal space of the refrigerating chamber 20. In some embodiments, the bottom plate 323 of the female housing 32 of the dry storage device 30 rests on the bottom surface, or the dry storage device 30 is disposed at the bottom of the interior space of the refrigerating chamber 20.

The dry storage device 30 includes a casing defining a drying chamber on which a blower port 33 is provided to supply gas to the drying chamber through the air blowing port 33. That is, the dry storage device 30 includes a housing for defining a drying chamber and having a blower port 33. The air supply port 33 is used for the cooling airflow to flow into the drying chamber. The drying chamber and the freezing chamber 10 are controllably communicated through the air blowing port 33 to controllably supply the cooling airflow inside the freezing chamber 10 to the drying chamber via the air blowing port 33. When the low-temperature cooling airflow flows into the drying chamber through the air blowing port 33, the temperature of the drying chamber can be lowered, and the relative humidity in the drying chamber can be lowered by the rise in the temperature. In some embodiments of the present invention, the air supply opening 33 may be disposed on a lateral side panel of the female housing 32 adjacent to the freezing compartment 10.

Correspondingly, an opening 16 (refer to FIG. 8) is disposed on the side wall of the freezing compartment 10, and a venting passage 13 is provided on the partition 12 between the drying storage device 30 and the freezing compartment 10, and the air blowing port 33 passes through the venting passage 13 and The openings 16 are connected. The cooling airflow at the lower portion of the freezing compartment 10 can be controlled to be supplied to the drying chamber via the opening 16, the venting passage 13, and the air blowing port 33. It should be understood by those skilled in the art that the lateral side plate of the female box 32 adjacent to the freezing chamber 10 can be formed by the lower portion of the partition 12, and the air blowing opening 33 is opened at the lower portion of the partition 12, and the air blowing port 33 can be located at the ventilation. The end of the passage 13 is adjacent to the drying chamber.

The dry storage device 30 of the embodiment of the present invention needs to open the air supply port 33 according to the activation signal to dry the air, and the dry storage device 30 has a certain sealing effect. The indoor air is replaced.

5 is a control block diagram of a dry storage device in accordance with an embodiment of the present invention. The dry storage device 30 further includes a temperature measurement module 70 configured to measure the temperature within the drying chamber. The air supply port 33 is configured to be turned on after the activation signal for triggering the air change of the dry storage device 30 is acquired, to supply the gas cooled by the cold source to the drying chamber, and to be turned off after the temperature in the drying chamber is lower than the first preset temperature value. . The first preset temperature value may be preset according to the temperature of the cooling chamber cold source to ensure that the air cooled by the cold source when the air supply port is closed can completely replace the original air in the drying chamber. For example, in the case of using the freezing compartment 10 (freezing temperature of -20 degrees Celsius) as a cold source, the first preset temperature can be set to -18 degrees Celsius, that is, after the temperature in the drying chamber drops to -18 degrees Celsius, the air outlet is closed. 33. After the sealed drying chamber is gradually heated to the ambient temperature of the refrigerating chamber, the drying environment is required.

To achieve the configuration of the air blowing port 33 above, the temperature measuring module 70 may include at least one temperature sensor disposed in the drying chamber to ensure that the temperature in the entire drying chamber reaches below the first preset temperature.

In some embodiments of the present invention, the dry storage device 30 further includes any one or more of the following trigger modules: a temperature triggering module 72, a timing triggering module 74, a humidity triggering module 76, and an opening and closing triggering module 78. The above multiple trigger modules can perform air supply opening control according to different usage parameters. The temperature triggering module 72 is configured to generate a start signal when the temperature measured by the temperature measuring module 70 is higher than the second preset temperature value, wherein the second preset temperature is higher than the first preset temperature of the drying chamber. The second preset temperature may be set to the temperature of the refrigerator environment in which the dry storage device 30 of the present embodiment is located, for example, the refrigerating temperature of the refrigerating chamber 20 (for example, 5 degrees Celsius) as the second preset temperature. After the temperature triggering module 72 determines that the temperature of the drying chamber reaches the second preset temperature, the air blowing port 33 can be opened immediately or after a delay period, and the cooling air is again sent to the drying chamber. Preferably, after determining that the temperature in the drying chamber measured by the temperature measuring module 70 is higher than the second preset temperature value, the air blowing port 33 is opened after a certain time delay. That is, the temperature in the drying chamber is maintained at the second preset temperature for a period of time, on the one hand, the environment of the drying chamber is more stable, and on the other hand, the false control caused by transient temperature fluctuations is prevented.

The timing triggering module 74 is configured to generate a start signal when the time after the last wind change is completed reaches a preset interval time, that is, to start the air change once every predetermined period (for example, 12 hours). The time of the specific interval may be determined according to the pre-test of the drying chamber, so that the humidity of the drying chamber is kept below the limit value in a state where the drying chamber is in a normal placed article.

The humidity trigger module 76 is configured to measure the relative humidity within the drying chamber and generate an activation signal when the measured relative humidity value is above a preset humidity value. The humidity trigger module 74 includes a humidity sensor disposed within the drying chamber to activate the air vent 33 after the humidity in the drying chamber has exceeded an excess (eg, above 50% RH). A preferred mode is that the humidity trigger module 74 can also be provided with a temperature sensor to operate in conjunction with the humidity sensor. For example, only when the temperature in the drying chamber is at a normal storage temperature (for example, 5 degrees Celsius), the opening of the air blowing port 33 is performed according to the measurement data of the humidity sensor, on the one hand, the humidity measured by the humidity sensor is prevented from being affected by the temperature, and on the other hand, It is also avoided that the humidity sensor sends an erroneous activation signal when the dry storage device 30 is in the open state or has been in the air supply state.

The opening and closing triggering module 78 is configured to detect an open/close state of the housing, and generate an activation signal after detecting that the housing is changed from an open state to a closed state. It should be understood by those skilled in the art that when the drawer body 31 pushes the female housing 32, that is, the drawer door 311 of the drawer body 31 closes or covers the female housing When the front end of the opening 32 is open, the housing of the dry storage device 30 can be considered to be in a closed state; when the drawer body 31 is pulled out of the female housing 32, the housing of the dry storage device 30 can be considered to be in an open state. The start-up air supply takes into consideration that the user enters the casing after the pick-and-place article opens, and the outside air enters the drying chamber, causing the humidity of the drying chamber to rise, so that each time the user turns on the drying chamber, the air is blown once to ensure the dry environment of the drying room. .

In some embodiments of the present invention, the dry storage device 30 may include any one of the above trigger modules to control the air supply port 33.

In other embodiments of the invention, the dry storage device 30 may also include a plurality of trigger modules to simultaneously control the air supply port 33. For example, the dry storage device 30 can include an open and close trigger module 78, a humidity trigger module 72, a timing trigger module 74, and a temperature trigger module 76. When the user picks up the item, the opening and closing triggering module 78 works; if the state is normally stored, the humidity triggering module 72, the timing triggering module 74, and the temperature triggering module 76 cooperate to perform the timing change; if the temperature or humidity exceeds the limit In the case, the wind can also be started. After the start signal is acquired, the air supply port 33 is opened immediately or delayed.

The above-described dry storage device 30 is disposed in the refrigerating compartment 20 of the refrigerator, and the cold source includes a refrigerating evaporator or a freezing compartment of the refrigerator.

6 is a schematic air duct system diagram of a drying chamber air supply damper of an air-cooled refrigerator according to an embodiment of the present invention, and FIG. 7 is a diagram showing a drying chamber air supply damper of an air-cooled refrigerator according to an embodiment of the present invention. A schematic air duct system diagram, FIG. 8 is a schematic air duct system diagram taken along section line BB of FIG. 2. Referring to Figures 6 and 7, a blower damper 34 may be provided at the air supply port 33 to controllably introduce a cooling airflow into the drying chamber. Of course, the blower damper 34 can also be disposed in the venting passage 13. The blower damper 34 can be, for example, an electric damper. Specifically, when the drying chamber does not need to supply air, the blower damper 34 is closed, and the cooling airflow inside the freezing compartment 10 does not flow to the drying chamber, and the airflow direction in the refrigerator is shown in FIG. 6 (the solid arrow in the figure indicates the blowing direction) The dotted arrow indicates the return air direction); when the drying chamber needs to supply air, the air supply damper 34 is opened, and part of the cooling airflow inside the freezing chamber 10 flows to the drying chamber, and the air flow in the refrigerator is shown in Figs. 7 and 8.

The blower damper 34 may also preferably be configured to adjust the opening degree of the air supply port. Specifically, when the drying chamber requires a large amount of air, the air supply damper 34 increases the opening degree of the air supply opening. When the drying room requires a small amount of air, the air supply damper 34 adjusts the opening degree of the air supply opening. The above air supply time is determined according to the volume of the drying chamber and the air supply volume of the air supply port, so as to ensure that the air cooled by the cold source can completely replace the original air in the drying chamber.

In an alternative embodiment, the air supply port 33 of the dry storage device 30 can also directly communicate with the air duct 60, so that the airflow cooled and dehumidified by the evaporator 50 flows directly into the drying chamber through the air supply port 33 (without freezing Room 10 or refrigerator compartment 20). In an alternative embodiment, when the air-cooled refrigerator 100 has two refrigerating evaporators and a refrigerating evaporator that respectively cool down the refrigerating compartment 20 and the freezing compartment 10, the airflow after dehumidifying by the refrigerating evaporator can be passed through the air blowing port 33. Directly flow into the drying chamber (no need to pass through the refrigerating chamber 20).

In some embodiments of the invention, as shown in FIG. 4, the dry storage device 30 also has a return air port 35 for the gas in the drying chamber to flow out of the dry storage device 30. When air is blown to the drying chamber through the air blowing port 33, the gas having a large humidity in the drying chamber is replaced by the return air outlet 35 to the drying chamber. In some embodiments, the return air vent 35 is disposed on the backing plate 321 of the dry storage device 30. The airflow flowing out of the return air port 35 of the dry storage device 30 can flow into the refrigerating chamber 20 and circulate back into the air duct 60 as the return air of the refrigerating chamber 20 returns.

In some embodiments, a return damper 36 for closing or opening the return air vent 35 may be provided at the return air vent 35. The return damper 36 can be, for example, a one-way damper, that is, it can only ventilate outward from the drying chamber without allowing the wind outside the drying chamber to flow into the drying chamber.

In some embodiments, the return damper 36 may be a one-way piece. When the blower damper 34 of the air supply port 33 is opened, the pressure inside the drying chamber may rise due to the flow of air into the drying chamber. Under the action of the pressure, the one-way piece of the return air port 35 of the dry storage device 30 is opened outward, and the air flow in the drying chamber flows out through the return air port 35, and the moisture in the drying chamber is taken away. In order to ensure that the moisture in the drying chamber is sufficiently taken away, the blower damper 34 may be continuously opened until the temperature in the drying chamber is lower than the first preset temperature. Then, the air supply damper 34 is closed. Since no continuous air enters the drying chamber, the pressure in the drying chamber is lowered, and the one-way piece of the air return port 35 of the dry storage device 30 is automatically closed by its own weight. At this time, a low-temperature closed space is formed in the drying chamber. That is, the cooling gas in the drying chamber cannot flow out of the drying chamber from the return air port 35; the gas having a relatively high relative humidity outside the drying chamber cannot enter the drying chamber. The air in the drying chamber exchanges heat with the external environment for heat exchange, so that the temperature rises, thereby reducing the relative humidity of the air in the drying chamber.

In some embodiments, the return damper 36 may also be an electronically controlled damper that automatically opens and closes in synchronization with the blower damper 34 at the air supply port 33.

Table 1 shows the comparison data of the refrigerating compartment and the dry room temperature humidity according to an embodiment of the present invention. It can be seen from Table 1 that the relative humidity of the drying chamber is about 16% lower than that of the refrigerating chamber 20. If the refrigerating chamber 20 is placed with a large amount of vegetables, the relative humidity in the refrigerating chamber 20 can reach 65%. If put The dry goods are placed in the refrigerating room 20, and the dry goods are very easy to regain moisture. The long time is prone to mold, which causes the dry goods to deteriorate. In the present invention, since the drying chamber is a relatively closed space, the dry goods placed in the drying chamber are less affected by the humidity of the refrigerating chamber 20, and the relative humidity of the drying chamber can be ensured to be less than 40%. Therefore, the dry goods will not be regained for a long time and will not deteriorate.

Table 1 Comparison of refrigerator and dry room temperature humidity

	干燥室(℃)Drying room (°C)	干燥室(％RH)Drying room (%RH)	冷藏室(℃)Cold storage room (°C)	冷藏室(％RH)Cold storage room (%RH)
	干燥室(℃)Drying room (°C)	干燥室(％RH)Drying room (%RH)	冷藏室(℃)Cold storage room (°C)	冷藏室(％RH)Cold storage room (%RH)	平均值average value	7.07.0	26.026.0	5.75.7	43.343.3

The embodiment of the present invention further provides a method for changing the air of the dry storage device, which is suitable for controlling any of the dry storage devices 30 in the above embodiments to ensure that the drying chamber defined by the dry storage device 30 has good performance. Dry storage environment.

9 is a flow chart of a method of changing air of a dry storage device according to an embodiment of the present invention, the method of changing air of the dry storage device includes:

Step S902, acquiring an activation signal for triggering the air change of the dry storage device;

Step S904, opening the air supply port according to the activation signal to supply the drying chamber with the gas cooled by the cold source;

Step S906, measuring the temperature in the drying chamber, and determining whether the measured temperature is lower than the first preset temperature;

Step S908, after the measured temperature is lower than the first preset temperature value, the air supply port is closed to heat the drying chamber in a sealed state.

The air supply time in the above method, that is, the time from the opening to the closing of the air supply opening may be determined according to the volume of the drying chamber and the air supply volume of the air supply opening, so as to ensure that the air cooled by the cold source can completely replace the original air in the drying room. And try to avoid the waste of electricity and cold source temperature caused by excessive air supply.

The above start signal may include any of the following:

a temperature overrun signal in which the temperature in the drying chamber is higher than a second preset temperature value;

a timing signal that reaches a preset interval time after the last time the wind is changed;

a humidity exceeding limit signal in which the relative humidity value in the drying chamber is higher than a preset humidity value;

A status signal of the housing of the dry storage device changing from an open state to a closed state.

In some embodiments of the present invention, any one of the above activation signals may be selected to control the air supply port 33; in other embodiments of the present invention, multiple activation signals may also be selected for simultaneous transmission. The tuyere 33 is controlled.

Figure 10 is an illustration of a method of changing the air of a dry storage device in accordance with one embodiment of the present invention. flow chart.

After the dry storage device is started, the following steps can be performed in sequence:

Step S1002, measuring an ambient temperature in the drying chamber;

Step S1004, determining whether the temperature value in the drying chamber is higher than the second preset temperature value, if it is to step S1012, if not, executing step S1006;

In step S1006, it is determined whether the time after the last change of the dry storage device has reached a preset interval time (for example, 12 hours), if the process proceeds to step S1012, if not, step S1008 is performed;

Step S1008, it is determined whether the relative humidity value in the drying chamber is higher than the preset humidity value (for example, higher than 50% RH), if the process proceeds to step S1012, if not, step S1010 is performed;

In step S1010, it is determined whether the dry storage device is turned off (ie, whether the housing of the dry storage device is changed from the open state to the closed state), if the process proceeds to step S1012, if not, return to step S1002;

Step S1012, opening the air supply port to supply the drying chamber with the gas cooled by the cold source;

In step S1014, it is determined whether the temperature measured in the drying chamber is lower than the first preset temperature value. If not, the air supply is continued until the air supply time reaches the requirement; if the step S1016 is performed, the air supply port is closed and the closed state is maintained until the next time is satisfied. The determination condition of any one of steps S1004 to S1010 is performed for the next air supply.

The process of opening the air supply port may be performed immediately after the determination condition of any one of steps S1004 to S1010 is satisfied. For example, the air supply may be started immediately after the time after the last air change is completed. It is delayed execution, for example, after the temperature value is higher than the second preset temperature value, the air supply port 33 is opened after a delay.

The air exchange method of the dry storage device provided in the embodiment is based on the start signal of triggering the air change of the dry storage device to open the air change, and the air exchange is controlled according to the temperature, thereby ensuring that the sent low temperature air can completely replace the dry air. The humid air in the room, so that after the end of the wind change, the relative humidity in the drying room can be guaranteed to meet the requirements of long-term preservation of dry goods, and the long-term air supply can be avoided, and the electric energy used for cooling and air supply is consumed, thereby effectively preventing the mildew of the food. And resurgence.

Further, the air exchange method of the dry storage device of the present embodiment flexibly adopts the temperature, humidity, time, and drying chamber opening and closing signals as the start signal for triggering the air change, which is beneficial to the maintenance of the dry environment and the long-term preservation of the dry goods.

Further, the triggering temperature for controlling the opening and closing of the air outlet, that is, the first preset temperature value and the second preset temperature value, may be based on the temperature of the cold room of the drying chamber and the environment of the refrigerator in which the cold source is located First set to ensure that the gas cooled by the cold source when the air supply port is closed can completely replace the original air in the drying chamber, and the control is more precise, and meets the storage requirements of the dry storage device.

In this regard, it will be appreciated by those skilled in the <RTIgt;the</RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Therefore, the scope of the invention should be understood and construed as covering all such other modifications or modifications.

Claims

A method of changing air of a dry storage device, the dry storage device comprising a casing defining a drying chamber, the casing being provided with a blowing port for supplying gas to the drying chamber through the air blowing port, The method includes:

Obtaining a start signal for triggering a change of air of the dry storage device;

Opening the air supply port according to the activation signal to supply the drying chamber with a gas cooled by a cold source;

The temperature in the drying chamber is measured, and after the temperature is lower than the first predetermined temperature value, the air blowing port is closed to raise the temperature of the drying chamber in a sealed state.
The method of claim 1 wherein

The activation signal includes: a temperature overrun signal in which the temperature in the drying chamber is higher than a second preset temperature value, wherein the second preset temperature is higher than the first preset temperature.
The method of claim 1 wherein

The activation signal includes a humidity overrun signal in which a relative humidity value in the drying chamber is higher than a preset humidity value.
The method of claim 1 wherein

The start signal includes a timing signal that reaches a preset interval time after the last wind change is completed.
The method of claim 1 wherein

The activation signal includes a status signal that the housing of the dry storage device changes from an open state to a closed state.
The method according to any one of claims 1 to 5, wherein the opening of the air blowing port according to the activation signal comprises:

After the activation signal is obtained, the air supply port is opened instantly or delayed.
A method according to any one of claims 1 to 5, wherein

The first preset temperature value is preset according to the temperature of the cold source to ensure that the air cooled by the cold source sufficiently replaces the original air in the drying chamber when the air blowing port is closed.
A dry storage device comprising:

a housing defining a drying chamber, the housing being provided with a blowing port for supplying gas to the drying chamber through the air blowing port,

a temperature measuring module configured to measure a temperature in the drying chamber,

The air blowing port is configured to be opened after acquiring an activation signal for triggering the air exchange of the dry storage device to supply the drying chamber with a gas cooled by the cold source, and the temperature is lower than the first preset The temperature value is then turned off to warm the drying chamber in a sealed state.
The dry storage device of claim 8 further comprising any one or more of the following trigger modules:

a temperature triggering module configured to generate the activation signal when a temperature measured by the temperature measurement module is higher than a second preset temperature value, wherein the second preset temperature is higher than the first preset temperature;

The timing triggering module is configured to generate the startup signal when the time after the last wind change is completed reaches a preset interval time;

a humidity triggering module configured to measure a relative humidity in the drying chamber and generate the starting signal when the measured relative humidity value is higher than a preset humidity value;

The opening and closing triggering module is configured to detect an opening and closing state of the housing, and generate the activation signal after detecting that the housing changes from an open state to a closed state.
A dry storage device according to claim 8 or 9, wherein

The dry storage device is disposed in a refrigerating compartment of the refrigerator.

The cold source includes a refrigerated evaporator or freezer compartment of the refrigerator.