WO2016082533A1 - 风冷冰箱及其控制方法 - Google Patents

风冷冰箱及其控制方法 Download PDF

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Publication number
WO2016082533A1
WO2016082533A1 PCT/CN2015/081863 CN2015081863W WO2016082533A1 WO 2016082533 A1 WO2016082533 A1 WO 2016082533A1 CN 2015081863 W CN2015081863 W CN 2015081863W WO 2016082533 A1 WO2016082533 A1 WO 2016082533A1
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WIPO (PCT)
Prior art keywords
drying chamber
air
temperature
compartment
disposed
Prior art date
Application number
PCT/CN2015/081863
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English (en)
French (fr)
Inventor
赵发
杨发林
张奎
徐志国
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青岛海尔股份有限公司
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Publication of WO2016082533A1 publication Critical patent/WO2016082533A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
    • F25D25/024—Slidable shelves
    • F25D25/025—Drawers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/005—Mounting of control devices

Definitions

  • the invention relates to the technical field of refrigerators, in particular to an air-cooled refrigerator and a control method thereof.
  • Another object of the present invention is to provide a method of controlling an air-cooled refrigerator to provide an environment suitable for long-term storage of dry food ingredients.
  • an air-cooled refrigerator including a plurality of storage compartments, the air-cooled refrigerator further comprising a drying chamber having a separate enclosed space, the drying chamber being disposed in the plurality of storages In one of the rooms,
  • the drying chamber is composed of a drawer type sealed container, and the drawer type sealed container comprises:
  • a drawer body for accommodating items to be stored
  • a female housing having a backing plate and a top plate, a bottom plate and two opposing lateral side plates joined to the backing plate at respective rear ends to form a cavity for retractably receiving the drawer body;
  • An air supply passage disposed in one of the lateral side plates of the female housing is configured to controlably supply a cooling airflow having a temperature of -12 ° C to -20 ° C to the drying chamber.
  • the plurality of storage compartments include a refrigerating compartment, the drying compartment being disposed at a bottom of the refrigerating compartment.
  • the plurality of storage compartments further includes a freezing compartment, the drying compartment being in controllable communication with the freezing compartment through the air supply passage.
  • the freezing chamber is disposed laterally adjacent to the refrigerating chamber, and the drying chamber and the freezing chamber are separated by a lateral side panel of the mating box adjacent to the freezing chamber,
  • the air supply passage is disposed in a lateral side panel of the female housing adjacent to the freezing chamber.
  • a blower damper is disposed in the air supply passage, and is configured to controlly turn on or off the air supply passage;
  • the drying chamber further has a return air port for the gas in the drying chamber to flow out of the drying chamber, and the return air opening is disposed on a back plate of the female housing.
  • a unidirectional damper is disposed at the air return opening, configured to allow the drying chamber gas to flow out of the drying chamber through the return air outlet, and prevent airflow outside the drying chamber from flowing into the air through the air return opening Drying room.
  • the air-cooled refrigerator further includes:
  • a temperature sensor disposed in the drying chamber to sense a temperature in the drying chamber
  • a humidity sensor disposed in the drying chamber to sense humidity in the drying chamber
  • the air supply damper is configured to controlly turn on or off the air supply passage according to a temperature sensed by the temperature sensor and/or a humidity sensed by the humidity sensor.
  • the drawer body is provided with a drawer door for pulling the drawer body, and a sealing strip is disposed at an edge of the drawer door to completely accommodate the drawer body in the socket housing A seal is formed between the drawer door and the female housing.
  • a control method of an air-cooled refrigerator including a plurality of storage compartments and a drying compartment having a separate enclosed space, the drying compartments being disposed in the plurality of In one of the storage compartments, the drying compartment has a supply air passage for the cooling airflow to flow into the drying chamber, and the control method includes:
  • the air supply passage is opened to raise the temperature of the drying chamber in a sealed state.
  • control method further includes:
  • the air supply passage is turned on when the temperature in the drying chamber is higher than a preset temperature value.
  • the air-cooled refrigerator of the present invention is provided with a separately sealed drying chamber inside the refrigerating compartment, and the temperature of the cooling airflow is reasonably set so that the drying chamber has a lower relative humidity and a lower temperature.
  • the low-humidity environment is especially suitable for the preservation of dry goods, which can avoid the moisture of dry goods and the nutrients of dry goods.
  • the cooling airflow in the freezer compartment is introduced into the drying chamber without the need to separately provide a duct for the drying chamber.
  • the cooling airflow is from the lower portion of the freezer compartment of the air-cooled refrigerator, and the airflow entering the freezer compartment is condensed during the flow from top to bottom, so that it flows into the drying chamber.
  • the absolute humidity of the cooling airflow is low to avoid adverse effects on the drying chamber.
  • FIG. 1 is a schematic front view of an air-cooled refrigerator in accordance with one embodiment of the present invention.
  • Figure 2 is a schematic cross-sectional view taken along line A-A of Figure 1;
  • Figure 3 is a schematic partial enlarged view of the portion C shown in Figure 2;
  • FIG. 4 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 5 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 6 is a schematic air duct system diagram taken along line B-B of Figure 1;
  • Figure 7 is a schematic illustration of the drying principle of a drying chamber in accordance with one embodiment of the present invention.
  • the air-cooled refrigerator 100 includes a plurality of storage compartments.
  • the plurality of storage compartments can include a refrigerating compartment 20 and/or a freezing compartment 10.
  • 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, respectively, for opening or closing the refrigerating compartment 20 and the freezing compartment 10, respectively.
  • the plurality of storage compartments may also include a fresh-keeping compartment (not shown).
  • the air-cooled refrigerator 100 of the embodiment of the present invention may further include The refrigeration cycle system and the duct 60 (shown in Figure 6).
  • the refrigeration cycle system may include, for example, a compressor (not shown), a condenser (not shown), a throttling element (not shown), and an evaporator 50 (shown in Figure 6).
  • the air-cooled refrigerator 100 may also be provided with a blower 40 (shown in FIG. 4) 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.
  • the air-cooled refrigerator 100 may further include a drying chamber 30 having a separate enclosed space disposed in one of the plurality of storage compartments.
  • the drying chamber 30 is preferably disposed in the internal space of the refrigerating chamber 20.
  • the drying principle of the drying chamber 30 in the embodiment of the present invention is that after the gas cooled by the cold source is sent into a relatively high temperature closed environment, the relative humidity is lowered as the low temperature gas gradually heats up in the closed space, and the drying effect is effectively formed.
  • Figure 7 is a schematic illustration of the drying principle of the drying chamber 30 in accordance with one embodiment of the present invention.
  • Figure 7 shows the relationship between the various parameters of the wet air by the graph, with the temperature as the ordinate and the moisture content as the abscissa, showing the cluster of relative humidity lines, which increases with temperature at a certain value.
  • the moisture content in the humid air increases accordingly.
  • the moisture content of the air does not change with temperature, that is, in a closed environment, the moisture content of the air does not change with the temperature rise.
  • point a (-18 ° C, 85% RH) is the low temperature air state point of the enclosed space after the end of ventilation
  • point b (5 ° C, 15 %RH) is the air state point after the gas temperature rises. It can be seen that as the temperature rises from -18 °C to 5 °C, the relative humidity of the closed environment is reduced from 85% RH to 15% RH. It can be seen that the temperature of the air in the closed environment rises, and the relative humidity can be effectively reduced.
  • the theoretical relative humidity will decrease to 15% RH as the temperature rises and the temperature rises to 5 ° C.
  • -18 ° C can generally be the temperature of the freezer compartment 10 or the evaporator 50 in the refrigerator
  • 5 ° C can generally be the temperature of the refrigerator compartment 20 .
  • the drying chamber 30 can be constructed from a drawer-type sealed container.
  • the drying chamber 30 may include a drawer body 31 and a female housing 32.
  • the drawer body 31 is for accommodating items to be stored, which may have a cavity for receiving a top opening of the item to be stored.
  • 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 opened, and the drawer body 31 can be pulled out of the female housing 32 and received in the female housing 32 in the front-rear direction of the refrigerating chamber 20.
  • a sealed container can be formed.
  • 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.
  • a sealing strip 37 on the drawer door 311 can be coupled to the top plate 322 of the female housing 32,
  • the bottom plate 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 drying chamber 30.
  • 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.
  • the drying chamber 30 can further include a supply air passage 13 disposed in a lateral side panel of the female housing 32 configured to provide controlled temperature to the drying chamber 30 at a temperature of -12 ° C to -20 Cooling air flow at °C.
  • the cooling airflow with temperature in the temperature range of -12 ° C ⁇ -20 ° C can make the drying chamber 30 have lower relative humidity and lower temperature. This low temperature and low humidity environment is especially suitable for dry food preservation. It can avoid the moisture content of dry goods and the nutrients of dry goods.
  • the drying chamber 30 is disposed in the upper space of the refrigerating chamber 20 (i.e., in the upper half of the space in the refrigerating chamber 20), which is disadvantageous for the maintenance of the dry state in the drying chamber 30. Therefore, in some embodiments of the present invention, the drying chamber 30 is preferably disposed in the lower space of the refrigerating chamber 20, that is, the drying chamber 30 is disposed in the lower half of the space in the refrigerating chamber 20. That is, the top plate of the drying chamber 30 (see the top plate 322 in FIG. 3) is located at a height position within the refrigerating chamber 20 not exceeding the lower half of the entire height of the internal space of the refrigerating chamber 20.
  • the bottom plate 323 of the female housing 32 of the drying chamber 30 is disposed adjacent the bottom surface of the interior space of the refrigerating chamber 20. That is, the bottom plate 323 of the female housing 32 of the drying chamber 30 is disposed near the bottom surface of the internal space of the refrigerating chamber 20 with a gap therebetween. In some embodiments, the bottom plate 323 of the female housing 32 of the drying chamber 30 rests on the bottom surface of the internal space of the refrigerating chamber 20, or the drying chamber 30 is disposed at the bottom of the internal space of the refrigerating chamber 20, or the drying chamber. 30 is disposed at the bottom of the refrigerating compartment 20. Thus, the drying chamber 30 can be placed at a position where the relative humidity of the refrigerating chamber 20 is lower.
  • the drying chamber 30 has an air inlet 33 through which a cooling airflow flows into the drying chamber 30.
  • the air inlet 33 may be formed by one end of the air supply passage 13 adjacent to the drying chamber 30, or may be formed on the inner side wall of the lateral side panel of the female housing 32 provided with the air supply passage 13 and the air supply passage 13 Connected air inlet 33.
  • a blower damper 34 may be provided at the air inlet 33 to controlly open or close the air inlet 33 to controllably introduce a cooling airflow into the drying chamber 30.
  • the drying chamber 30 is controllably communicated with the freezing chamber 10 through the air supply damper 34 to control the cooling airflow inside the freezing chamber 10 (temperature of -12 ° C to -20 ° C) via the air inlet 33 or the air supply passage 13
  • the ground is supplied to the drying chamber 30.
  • the low-temperature cooling airflow flows into the drying chamber 30 through the air inlet 33 to lower the temperature of the drying chamber 30 and thereby reduce the humidity of the drying chamber 30.
  • the air supply damper 34 may also be disposed in the air supply passage 13 to controlly turn on or off the air supply passage 13.
  • the blower damper 34 can be, for example, an electric damper. Specifically, when the drying chamber 30 does not need to supply air, the air supply damper 34 is closed (ie, the air supply passage 13 is disconnected), and the cooling airflow inside the freezing chamber 10 does not flow to the drying chamber 30, and the air flow direction in the refrigerator is shown in FIG. 4. (The solid arrows in the figure indicate the direction of the air supply, and the dotted arrows indicate the direction of the return air); when the drying chamber 30 requires air supply, the air supply damper 34 is opened (ie, the air supply passage 13 is turned on), and the inside of the freezing chamber 10 is partially cooled. The air flow flows to the drying chamber 30, and the air flow in the refrigerator is shown in Figs. 5 and 6.
  • the air supply damper 34 can also adjust the opening degree of the air inlet 33. Specifically, when the drying chamber 30 requires a large amount of air, the air supply damper 34 adjusts the opening of the air inlet. When the air volume of the drying chamber 30 is small, the air supply damper 34 adjusts the opening of the air inlet.
  • the refrigerating compartment 20 can be disposed laterally adjacent to the freezing compartment 10.
  • the refrigerating compartment 20 is disposed laterally of the freezing compartment 10, and a partition 12 is provided between the refrigerating compartment 20 and the freezing compartment 10.
  • the lateral side panels of the female housing 32 adjacent the freezer compartment 10 may be formed by the lower portion of the partition 12, or the lower portion of the partition 12 may form adjacent the freezer compartment 10 of the female housing 32. Lateral side panels.
  • the drying chamber 30 and the freezing chamber 10 are separated by a lateral side panel of the female housing 32 adjacent to the freezing chamber 10.
  • the air supply passage 13 is provided in a lateral side plate of the female housing 32 adjacent to the freezing compartment 10.
  • the air inlet 33 is formed on the inner side wall of the side case 32 adjacent to the lateral side plate of the freezing compartment 10.
  • the blower damper 34 may be disposed at the air inlet 33, that is, the blower damper 34 is disposed on the lateral side panel of the mating housing 32 adjacent to the freezing compartment 10.
  • an opening 16 (see FIG. 6), or a ventilation passage, is provided on the side wall of the freezing compartment 10 adjacent to the refrigerating compartment 20 (ie, the outer side wall of the female housing 32 adjacent to the lateral side panel of the freezing compartment 10).
  • An opening 16 is formed adjacent one end of the freezing chamber 10 of 13.
  • the air inlet 33 communicates with the opening 16 through the air supply passage 13.
  • the cooling airflow in the lower portion of the freezing compartment 10 can be controlledly supplied to the drying chamber 30 via the opening 16, the air supply passage 13, the air supply damper 34, and the air inlet 33.
  • the cooling airflow to the drying chamber 30 comes from the lower portion of the freezing compartment 10
  • the airflow entering the freezing compartment 10 Condensation occurs during the flow from top to bottom, so that the absolute humidity of the cooling airflow flowing into the drying chamber 30 is low, thereby avoiding adverse effects on the drying chamber.
  • the air inlet 33 or the air supply passage 13 of the drying chamber 30 may 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 30 through the air inlet 33 ( It is not necessary to pass through the freezing compartment 10 or the refrigerating compartment 20).
  • the air-cooled refrigerator 100 has two refrigerating compartment evaporators and a freezing compartment evaporator that respectively cool down the refrigerating compartment 20 and the freezing compartment 10
  • the airflow after cooling and dehumidifying the refrigerating compartment evaporator can be passed through
  • the air inlet 33 directly flows into the drying chamber 30 (it does not need to pass through the refrigerating chamber 20).
  • the drying chamber 30 also has a return air port 35 for the gas in the drying chamber 30 to flow out of the drying chamber 30.
  • the gas having a large humidity in the drying chamber 30 is displaced to the drying chamber 30 through the return air port 35.
  • the return air vent 35 is disposed on the backing plate 321 of the drying chamber 30. The airflow flowing out through the return air port 35 of the drying chamber 30 can flow into the refrigerating chamber 20, and is circulated back to the air duct 60 as the refrigerating chamber 20 returns.
  • 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.
  • a one-way damper is used to limit the direction of airflow at the return air vent 35, which allows air to exit the drying chamber 30 via the return air vent 35 without allowing wind outside the drying chamber 30 to flow through the return air vent 35.
  • the inside of the drying chamber 30 is introduced; that is, it allows the gas in the drying chamber 30 to flow out of the drying chamber 30 via the return air opening 35, and the airflow outside the drying chamber 30 is prevented from flowing into the drying chamber 30 via the return air opening 35.
  • the return damper 36 can be a one-way piece.
  • the air supply damper 34 of the air inlet 33 is opened, the pressure inside the drying chamber 30 rises due to the flow of air into the drying chamber 30.
  • the one-way piece of the return air port 35 of the drying chamber 30 is opened outward, and the airflow flows out through the return air port 35, and the moisture in the drying chamber 30 is taken away.
  • the blower damper 34 may be continuously opened for a predetermined time, such as 3 minutes (the length of time may be set according to the volume of the drying chamber 30 and the area of the air inlet 33). The blower damper 34 is then closed.
  • the pressure in the drying chamber 30 is lowered, and the unidirectional sheet of the return air port 35 of the drying chamber 30 is automatically closed by its own weight. At this time, a low-temperature sealed space is formed inside the drying chamber 30. That is, the cooling gas in the drying chamber 30 cannot flow out of the drying chamber 30 from the return air port 35; the gas having a relatively high relative humidity outside the drying chamber 30 cannot enter the drying chamber 30.
  • the air in the drying chamber 30 is thermally exchanged with the external environment for heat exchange, so that its temperature rises, thereby reducing the relative humidity of the air in the drying chamber 30.
  • the opening and closing of the blower damper 34 can also be controlled using the temperature and/or humidity within the drying chamber 30.
  • the air-cooled refrigerator 100 may further include a temperature sensor and a humidity sensor (not shown).
  • a temperature sensor and a humidity sensor are respectively disposed in the drying chamber 30 to sense the temperature and humidity in the drying chamber 30, respectively.
  • the blower damper 34 may be configured to controllably turn on or off the blower passage 13 in accordance with the temperature sensed by the temperature sensor and/or the humidity sensed by the humidity sensor is controlled to be turned on or off.
  • the blower damper 34 (ie, the conductive blower passage 13) is opened when the relative humidity within the drying chamber 30 is above a preset humidity value to supply a cooling airflow into the drying chamber 30. In some embodiments, the blower damper 34 is opened when the temperature within the drying chamber 30 is above a predetermined temperature value to supply a cooling airflow into the drying chamber 30. In some embodiments, the blower damper 34 is closed (ie, the blower passage 13 is closed) when the relative humidity in the drying chamber 30 is lower than the preset humidity value, or the blower damper 34 is closed after the predetermined time is turned on, or when drying is performed. The blower damper 34 is closed when the temperature in the chamber 30 is lower than the preset temperature value.
  • the return damper 36 can also be an electronically controlled damper that automatically opens and closes in synchronization with the blower damper 34.
  • Table 1 shows temperature and humidity comparison data of the refrigerating compartment 20 and the drying compartment 30 of the air-cooled refrigerator 100 according to an embodiment of the present invention. It can be seen from Table 1 that the relative humidity of the drying chamber 30 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 the dry goods are put into the refrigerating room 20, the dry goods are very easy to regain moisture, and the long time is prone to mold, which causes the dry goods to deteriorate.
  • the drying chamber 30 is a relatively closed space, the dry goods placed in the drying chamber 30 are less affected by the humidity of the refrigerating chamber 20, and the relative humidity of the drying chamber 30 can be kept below 40%. Therefore, the dry goods will not be regained for a long time and will not deteriorate.
  • Drying room (°C) Drying room (%RH) Cold storage room (°C) Cold storage room (%RH) average value 7.0 26.0 5.7 43.3
  • the embodiment of the present invention further provides a control method of the air-cooled refrigerator 100 in any of the above embodiments.
  • the control method can control the air-cooled refrigerator 100 in any of the above embodiments to have a lower relative humidity and a lower temperature in the drying chamber 30, providing an environment suitable for long-term storage of dry food.
  • the control method of the embodiment of the present invention includes: conducting the air supply passage 13 to supply a cooling airflow with a temperature of -12 ° C to -20 ° C to the drying chamber 30, thereby replacing the gas in the drying chamber 30; and conducting the air supply passage 13 After the time reaches the preset time, the air supply passage 13 is disconnected so that the drying chamber 30 is in a sealed state. Warm up.
  • the blower damper 34 is opened to conduct the blower passage 13 when the relative humidity within the drying chamber 30 is above a preset humidity value, thereby supplying a cooling airflow into the drying chamber 30. In some embodiments, the blower damper 34 is opened to conduct the blower passage 13 when the temperature within the drying chamber 30 is above a preset temperature value to supply a cooling airflow into the drying chamber 30.
  • the blower damper 34 is closed to open the blower passage 13 when the relative humidity within the drying chamber 30 is below a preset humidity value, or when the temperature within the drying chamber 30 is below a preset temperature value
  • the air supply damper 34 is closed to close the air supply passage 13.
  • the control method provided in the embodiment can ensure that the sent cold air can completely replace the humid air in the drying chamber 30, so that after the air exchange is completed, the relative humidity in the drying chamber 30 can be ensured to maintain the dry goods for a long time. It can also avoid the long-term air supply, consume the electric energy used for cooling and air supply, and effectively avoid the mildew and moisture regain of food.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
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  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

一种风冷冰箱（100）及其控制方法，该风冷冰箱（100）包括多个储物间室，还包括具有独立封闭空间的干燥室（30），干燥室（30）设置在多个储物间室之一中，干燥室（30）由抽屉式密封容器构成；抽屉式密封容器包括：抽屉本体（31），用于容纳待存物品；母座箱体（32），具有背板（321）和在各自的后端与背板（321）结合的顶板（322）、底板（323）和两个相对的横向侧板，以形成可抽拉地容纳抽屉本体（31）的凹腔；以及送风通道（13），设置在母座箱体（32）的一个横向侧板中，配置成受控地向干燥室（30）提供温度为-12℃～-20℃的冷却气流。该风冷冰箱（100）通过合理设置冷却气流的温度，使干燥室（30）内具有较低的相对湿度和较低的温度，这种低温低湿的环境特别适合干货食材保存，既可以避免干货受潮也可以保证干货的营养成分。

Description

风冷冰箱及其控制方法 技术领域
本发明涉及冰箱技术领域，特别是涉及一种风冷冰箱及其控制方法。
背景技术
伴随消费者对于更加健康生活方式的期望，枸杞、茶叶、香菇、桂圆、冬虫夏草等干货食材在饮食结构中的比重逐渐升高。但这些干货食材非常不易存储，如果放在常温中保存，在通风不好的情况下，保存时间长了容易变色、变质，导致营养成分流失；如果放置在冰箱冷藏室内保存，容易受到冷藏室内其他食物的影响导致受潮，引起发霉、变质。如何长期储存干货食材是函待解决的问题。
发明内容
本发明的一个目的是针对现有技术中存在的上述缺陷，提供一种具有干燥室的风冷冰箱，为干货食材提供适合长期保存的环境。
本发明的另一个目的是要提供一种风冷冰箱的控制方法，从而为干货食材提供适合长期保存的环境。
按照本发明的一个方面，提供了一种风冷冰箱，包括多个储物间室，所述风冷冰箱还包括具有独立封闭空间的干燥室，所述干燥室设置在所述多个储物间室之一中，
所述干燥室由抽屉式密封容器构成，所述抽屉式密封容器包括：
用于容纳待存物品的抽屉本体；
母座箱体，其具有背板和在各自的后端与所述背板结合的顶板、底板和两个相对的横向侧板，以形成可抽拉地容纳所述抽屉本体的凹腔；以及
送风通道，其设置在所述母座箱体的一个所述横向侧板中，配置成受控地向所述干燥室提供温度为-12℃～-20℃的冷却气流。
可选地，所述多个储物间室包括冷藏室，所述干燥室设置在所述冷藏室的底部。
可选地，所述多个储物间室还包括冷冻室，所述干燥室通过所述送风通道与所述冷冻室可控地连通。
可选地，所述冷冻室与所述冷藏室侧向相邻设置，所述干燥室与所述冷冻室之间由所述母座箱体的邻近所述冷冻室的横向侧板隔开，
所述送风通道设置在所述母座箱体的邻近所述冷冻室的横向侧板中。
可选地，所述送风通道中设置送风风门，配置成受控地导通或断开所述送风通道；
所述干燥室还具有供所述干燥室内气体流出所述干燥室的回风口，所述回风口设置在所述母座箱体的背板上。
可选地，所述回风口处设置单向风门，配置成允许所述干燥室内气体经由所述回风口流出所述干燥室，且阻止所述干燥室外部的气流经由所述回风口流入所述干燥室。
可选地，所述风冷冰箱还包括：
温度传感器，设置在所述干燥室中，以感测所述干燥室内的温度；和
湿度传感器，设置在所述干燥室中，以感测所述干燥室内的湿度，
所述送风风门配置成：根据所述温度传感器感测的温度和/或所述湿度传感器感测的湿度受控地导通或断开所述送风通道。
可选地，所述抽屉本体上设有用于抽拉所述抽屉本体的抽屉门，所述抽屉门的边缘处设置有密封条，以当所述抽屉本体完全容置于所述母座箱体时，在所述抽屉门与所述母座箱体之间形成密封。
按照本发明的另一方面，提供了一种风冷冰箱的控制方法，所述风冷冰箱包括多个储物间室和具有独立封闭空间的干燥室，所述干燥室设置在所述多个储物间室之一中，所述干燥室具有供冷却气流流入所述干燥室的送风通道，所述控制方法包括：
导通所述送风通道以向所述干燥室提供温度为-12℃～-20℃的冷却气流，从而置换所述干燥室内气体；
在导通所述送风通道的时间达到预设时间后，断开所述送风通道，以使所述干燥室在密封状态下升温。
可选地，所述控制方法还包括：
当所述干燥室内的相对湿度高于预设湿度值时导通所述送风通道；或者
当所述干燥室内的温度高于预设温度值时导通所述送风通道。
本发明的风冷冰箱在冷藏室内部设置独立密封的干燥室，通过合理设置冷却气流的温度，使干燥室内具有较低的相对湿度和较低的温度，这种低温 低湿的环境特别适合干货食材保存，既可以避免干货受潮也可以保证干货的营养成分。
进一步地，本发明优选实施例中将冷冻室中的冷却气流引入干燥室中，无需对干燥室单独设置风道。
进一步地，在本发明优选实施例中，冷却气流来自于风冷冰箱的冷冻室下部，由于进入冷冻室中湿度很大的气流在自上向下流动的过程中会发生凝结，使得流入干燥室内的冷却气流的绝对湿度较低，从而避免对干燥室造成不利影响。
根据下文结合附图对本发明具体实施例的详细描述，本领域技术人员将会更加明了本发明的上述以及其他目的、优点和特征。
附图说明
后文将参照附图以示例性而非限制性的方式详细描述本发明的一些具体实施例。附图中相同的附图标记标示了相同或类似的部件或部分。本领域技术人员应该理解，这些附图未必是按比例绘制的。附图中：
图1是根据本发明一个实施例的风冷冰箱的示意性主视图；
图2是沿图1中的剖切线A-A截取的示意性剖视图；
图3是图2所示C处的示意性局部放大图；
图4是根据本发明一个实施例的风冷冰箱的干燥室送风风门关闭时的示意性风道系统图；
图5是根据本发明一个实施例的风冷冰箱的干燥室送风风门开启时的示意性风道系统图；
图6是沿图1中的剖切线B-B截取的示意性风道系统图；
图7是根据本发明一个实施例的干燥室的干燥原理示意图。
具体实施方式
图1是根据本发明一个实施例的风冷冰箱100的示意性主视图。风冷冰箱100包括多个储物间室。在一些实施例中，多个储物间室可包括冷藏室20和/或冷冻室10。在冷藏室20和冷冻室10的前开口处分别设置冷藏室门24和冷冻室门14，用以分别打开或关闭冷藏室20和冷冻室10。在一些实施例中，多个储物间室还可包括保鲜室(图中未示出)。
如本领域技术人员可以理解的，本发明实施例的风冷冰箱100还可包括 制冷循环系统以及风道60(如图6所示)。制冷循环系统例如可包括压缩机(图中未示出)、冷凝器(图中未示出)、节流元件(图中未示出)以及蒸发器50(如图6所示)。风冷冰箱100还可设有位于风道60内的风机40(如图4所示)，风机40用以将经过蒸发器50降温除湿后的气流吹向冷藏室20和/或冷冻室10。
特别地，风冷冰箱100还可包括具有独立封闭空间的干燥室30，其设置在所述多个储物间室之一中。干燥室30优选设置在冷藏室20的内部空间中。本发明实施例中干燥室30的干燥原理在于：将经过冷源冷却的气体送入相对高温的封闭环境中后，随着低温气体在封闭空间逐渐升温，导致相对湿度下降，有效形成干燥效果。
图7是根据本发明一个实施例的干燥室30的干燥原理示意图。图7将湿空气各种参数之间的关系用图线表示，以温度为纵坐标，以含湿量为横坐标，示出了相对湿度线簇，在一定值下随着随温度的增加，湿空气中的含湿量相应增加。在封闭环境中，空气含湿量随温度回升是不变的，也就是说，在封闭环境中，空气的含湿量不会随温度的回升而改变。对于图中在一条竖直线上的两个点a点和b点，a点(-18℃，85％RH)为换气结束后封闭空间的低温空气状态点，b点(5℃，15％RH)为气体温度回升后的空气状态点，可以看出随着温度从-18℃回升到5℃，封闭环境的相对湿度从85％RH降低到15％RH。由此可以看出封闭环境中空气温度上升，可以有效地降低相对湿度。也就是说，如果封闭环境中充满温度为-18℃、相对湿度为85％RH的气体后，随着温度上升，在温度上升至5℃时，理论上相对湿度会降低到15％RH。而-18℃一般可以为冰箱中冷冻室10或蒸发器50的温度，而5℃一般可以为冰箱冷藏室20的温度。利用这一物理特性，可以实现本实施例中干燥室的储物环境。
参见图2和图3，在一些实施例中，干燥室30可由抽屉式密封容器构成。干燥室30可包括抽屉本体31和母座箱体32。抽屉本体31用于容纳待存物品，其可具有容纳待存物品的顶端开口的容腔。母座箱体32可具有背板321和在各自的后端与背板321结合的顶板322、底板323和两个相对的横向侧板，以形成可抽拉地容纳抽屉本体31的凹腔。母座箱体32的前端开口，抽屉本体31可沿冷藏室20的前后方向被拉出母座箱体32和容置于母座箱体32中。当抽屉本体31完全容置于母座箱体32时，可以形成密封容器。
在一些实施例中，抽屉本体31上可设置用于抽拉抽屉本体31的抽屉门311，抽屉门311的边缘处设置有密封条37。这样，当抽屉本体31与母座箱体32闭合时，即当抽屉本体31完全容置于母座箱体32时，抽屉门311上的密封条37可与母座箱体32的顶板322、底板323、两个相对的横向侧板的前端密封配合或者说将母座箱体32的前端开口密封，以使干燥室30基本密封。
在一些实施例中，可在抽屉本体31横向的两个侧壁上设置滑道，相应地在母座箱体32两个相对的横向侧板的内表面上安装滑轨，从而使抽屉本体31可滑动地安装于母座箱体32。
在一些实施例中，干燥室30还可包括送风通道13，其设置在母座箱体32的一个横向侧板中，配置成受控地向干燥室30提供温度为-12℃～-20℃的冷却气流。相比其他温度区间，温度处于-12℃～-20℃温度区间的冷却气流，可使得干燥室30内具有较低的相对湿度和较低的温度，这种低温低湿的环境特别适合干货食材保存，既可以避免干货受潮也可以保证干货的营养成分。
通常，冷藏室20内会存放果蔬类食物，使得冷藏室20内的相对湿度较高。冷藏室20的上部空间相比其下部空间会有更高的相对湿度。将干燥室30设置在冷藏室20的上部空间中(即冷藏室20内上二分之一的空间中)，不利于干燥室30内干燥状态的保持。因此，在本发明一些实施例中，优选将干燥室30设置在冷藏室20的下部空间中，即将干燥室30设置在冷藏室20内下二分之一的空间中。也就是说，干燥室30的顶板(参见图3中的顶板322)在冷藏室20内所处的高度位置不超过冷藏室20内部空间整个高度的下二分之一。
在进一步的实施例中，干燥室30的母座箱体32的底板323邻近冷藏室20内部空间底表面设置。即干燥室30的母座箱体32的底板323靠近冷藏室20内部空间底表面设置，且其间存在间隙。在一些实施例中，干燥室30的母座箱体32的底板323搁置在冷藏室20内部空间的底表面上，或者说干燥室30设置在冷藏室20内部空间的底部，又或者说干燥室30设置在冷藏室20的底部。这样，可使干燥室30处在冷藏室20的相对湿度更低的位置。
在一些实施例中，干燥室30具有供冷却气流流入干燥室30的进风口33。进风口33可由送风通道13的邻近干燥室30的一端形成，或者说在母座箱体32的设置有送风通道13的横向侧板的内侧壁上形成与送风通道13 连通的进风口33。进风口33处可设置送风风门34，以受控地打开或封闭进风口33，从而受控地向干燥室30中引入冷却气流。干燥室30通过送风风门34与冷冻室10可控地连通，以经由进风口33或者说送风通道13将冷冻室10内部的(温度为-12℃～-20℃的)冷却气流受控地供应至干燥室30。低温的冷却气流通过进风口33流入干燥室30内后可降低干燥室30的温度并进而降低干燥室30的湿度。当然，如图4所示，送风风门34也可设置在送风通道13中，以受控地导通或断开送风通道13。
送风风门34例如可为电动风门。具体地，当干燥室30不需要送风时，送风风门34关闭(即断开送风通道13)，冷冻室10内部的冷却气流不流向干燥室30，冰箱中的风路流向参见图4(图中实线箭头表示送风方向，虚线箭头表示回风方向)；当干燥室30需要送风时，送风风门34开启(即导通送风通道13)，冷冻室10内部的部分冷却气流流向干燥室30，冰箱中的风路流向参见图5和图6。送风风门34也可调节进风口33的开度大小。具体地，当干燥室30需要风量大时，送风风门34调大进风口开度，当干燥室30需要风量小时，送风风门34调小进风口开度。
在一些实施例中，冷藏室20可与冷冻室10侧向相邻设置。或者说冷藏室20设置在冷冻室10侧向，冷藏室20与冷冻室10之间设置有隔板12。本领域技术人员可意识到的，母座箱体32的邻近冷冻室10的横向侧板可由隔板12的下部形成，或者说隔板12的下部形成母座箱体32的邻近冷冻室10的横向侧板。换句话说，干燥室30与冷冻室10之间由母座箱体32的邻近冷冻室10的横向侧板隔开。送风通道13设置在母座箱体32的邻近冷冻室10的横向侧板中。
进风口33形成在母座箱体32的邻近冷冻室10的横向侧板的内侧壁上。送风风门34可设置在进风口33处，即送风风门34设置在母座箱体32的邻近冷冻室10的横向侧板上。
相应地，在冷冻室10的邻近冷藏室20的侧壁(即母座箱体32的邻近冷冻室10的横向侧板的外侧壁)上设置开口16(参见图6)，或者说送风通道13的邻近冷冻室10的一端形成开口16。进风口33通过送风通道13与开口16连通。冷冻室10下部的冷却气流可经由开口16、送风通道13、送风风门34、进风口33受控地供应至干燥室30。在本发明实施例中，由于通入干燥室30的冷却气流来自于冷冻室10下部，进入冷冻室10中的气流 在自上向下流动的过程中会发生凝结，使得流入干燥室30内的冷却气流的绝对湿度较低，从而避免对干燥室造成不利影响。
在替代性实施例中，干燥室30的进风口33或者送风通道13也可直接与风道60连通，以使经过蒸发器50降温除湿后的气流经进风口33直接流入干燥室30(而不需要经过冷冻室10或冷藏室20)。在替代性实施例中，当风冷冰箱100具有两个分别为冷藏室20和冷冻室10降温的冷藏室蒸发器和冷冻室蒸发器时，可使经冷藏室蒸发器降温除湿后的气流经由进风口33直接流入干燥室30(不需要经过冷藏室20)。
继续参见图3，干燥室30还具有供干燥室30内气体流出干燥室30的回风口35。当经由进风口33向干燥室30送风时，将干燥室30内湿度较大的气体通过回风口35置换出干燥室30。在一些实施例中，回风口35设置在干燥室30的背板321上。经干燥室30的回风口35流出的气流可流入冷藏室20中，随冷藏室20回风循环回风道60中。
在一些实施例中，回风口35处可设置用于封闭或打开回风口35的回风风门36。回风风门36例如可为单向风门。本领域技术人员可意识到的，单向风门用于限制回风口35处的气流方向，其允许从干燥室30经由回风口35向外出风而不能使干燥室30外部的风经由回风口35流进干燥室30内；即其允许干燥室30内气体经由回风口35流出干燥室30，且阻止干燥室30外部的气流经由回风口35流入干燥室30。
在一些实施例中，回风风门36可为单向片，在进风口33的送风风门34开启时，由于有气流进入干燥室30，干燥室30内部的压力会升高，在压力的作用下，干燥室30回风口35的单向片向外打开，气流通过回风口35流出，将干燥室30内的水分带走。为了保证干燥室30内的水分被充分带走，可将送风风门34持续打开预定时间，如3min(时间长短可根据干燥室30容积和进风口33面积进行设定)。然后送风风门34关闭，由于没有持续的空气进入干燥室30，干燥室30内的压力会降低，干燥室30回风口35的单向片在自重的作用下自动关闭。此时干燥室30内部形成了一个低温的密闭空间。即干燥室30内的冷却气体无法从回风口35流出干燥室30；干燥室30外部相对湿度较高的气体也无法进入干燥室30内。干燥室30内的空气会与外部环境发生热传导而进行热交换，使得其温度升高，从而降低干燥室30内空气的相对湿度。
在一些实施例中，也可利用干燥室30内的温度和/或湿度控制送风风门34的开启或关闭。相应地，风冷冰箱100还可包括温度传感器和湿度传感器(图中未示出)。温度传感器和湿度传感器分别设置在干燥室30中，以分别感测干燥室30内的温度和湿度。送风风门34可配置成：根据温度传感器感测的温度和/或湿度传感器感测的湿度受控地开启或关闭，从而受控地导通或断开送风通道13。在一些实施例中，当干燥室30内的相对湿度高于预设湿度值时开启送风风门34(即导通送风通道13)，以向干燥室30内供应冷却气流。在一些实施例中，当干燥室30内的温度高于预设温度值时开启送风风门34，以向干燥室30内供应冷却气流。在一些实施例中，当干燥室30内的相对湿度低于预设湿度值时关闭送风风门34(即断开送风通道13)，或者开启预定时间后关闭送风风门34，或者当干燥室30内的温度低于预设温度值时关闭送风风门34。
在一些实施例中，回风风门36也可为电控风门，其可自动与送风风门34保持同步开闭。
表1示出了根据本发明一个具体实施例的风冷冰箱100的冷藏室20和干燥室30的温、湿度对比数据。从表1可以看出干燥室30的相对湿度比冷藏室20低16％左右，如果冷藏室20放置大量的蔬菜，冷藏室20内的相对湿度可以达到65％。如果把干货放入冷藏室20中，干货非常容易回潮，时间长了容易发霉，造成干货变质。而在本发明中，由于干燥室30是相对密闭的空间，放在干燥室30的干货受冷藏室20湿度影响很小，可以保证干燥室30的相对湿度低于40％以下。从而使干货长期保存不回潮、不变质。
表1冷藏室和干燥室温湿度对比数据
  干燥室(℃) 干燥室(％RH) 冷藏室(℃) 冷藏室(％RH)
平均值 7.0 26.0 5.7 43.3
特别地，本发明实施例还提供了上述任一实施例中的风冷冰箱100的控制方法。该控制方法可对以上任一实施例中的风冷冰箱100进行控制，以使干燥室30内具有较低的相对湿度和较低的温度，为干货食材提供适合长期保存的环境。
本发明实施例的控制方法包括：导通送风通道13以向干燥室30提供温度为-12℃～-20℃的冷却气流，从而置换干燥室30内气体；在导通送风通道13的时间达到预设时间后，断开送风通道13，以使干燥室30在密封状态下 升温。
在一些实施例中，当干燥室30内的相对湿度高于预设湿度值时开启送风风门34以导通送风通道13，从而向干燥室30内供应冷却气流。在一些实施例中，当干燥室30内的温度高于预设温度值时开启送风风门34以导通送风通道13，从而以向干燥室30内供应冷却气流。
在一些替代性实施例中，当干燥室30内的相对湿度低于预设湿度值时关闭送风风门34以断开送风通道13，或者当干燥室30内的温度低于预设温度值时关闭送风风门34以断开送风通道13。
本实施例中提供的控制方法，既可以保证送入的低温空气可以完全替换干燥室30内的潮湿空气，从而在换风结束后，可以保证干燥室30内的相对湿度达到长时间保存干货的要求，又可以避免长时间送风，耗费制冷和送风使用的电能，有效地避免食物霉变和回潮。
至此，本领域技术人员应认识到，虽然本文已详尽示出和描述了本发明的多个示例性实施例，但是，在不脱离本发明精神和范围的情况下，仍可根据本发明公开的内容直接确定或推导出符合本发明原理的许多其他变型或修改。因此，本发明的范围应被理解和认定为覆盖了所有这些其他变型或修改。

Claims (10)

  1. 一种风冷冰箱，包括多个储物间室，所述风冷冰箱还包括具有独立封闭空间的干燥室，所述干燥室设置在所述多个储物间室之一中，
    所述干燥室由抽屉式密封容器构成，所述抽屉式密封容器包括：
    用于容纳待存物品的抽屉本体；
    母座箱体，其具有背板和在各自的后端与所述背板结合的顶板、底板和两个相对的横向侧板，以形成可抽拉地容纳所述抽屉本体的凹腔；以及
    送风通道，其设置在所述母座箱体的一个所述横向侧板中，配置成受控地向所述干燥室提供温度为-12℃～-20℃的冷却气流。
  2. 根据权利要求1所述的风冷冰箱，其中
    所述多个储物间室包括冷藏室，所述干燥室设置在所述冷藏室的底部。
  3. 根据权利要求2所述的风冷冰箱，其中
    所述多个储物间室还包括冷冻室，所述干燥室通过所述送风通道与所述冷冻室可控地连通。
  4. 根据权利要求3所述的风冷冰箱，其中
    所述冷冻室与所述冷藏室侧向相邻设置，所述干燥室与所述冷冻室之间由所述母座箱体的邻近所述冷冻室的横向侧板隔开，
    所述送风通道设置在所述母座箱体的邻近所述冷冻室的横向侧板中。
  5. 根据权利要求4所述的风冷冰箱，其中
    所述送风通道中设置送风风门，配置成受控地导通或断开所述送风通道；
    所述干燥室还具有供所述干燥室内气体流出所述干燥室的回风口，所述回风口设置在所述母座箱体的背板上。
  6. 根据权利要求5所述的风冷冰箱，其中
    所述回风口处设置单向风门，配置成允许所述干燥室内气体经由所述回风口流出所述干燥室，且阻止所述干燥室外部的气流经由所述回风口流入所述干燥室。
  7. 根据权利要求6所述的风冷冰箱，还包括：
    温度传感器，设置在所述干燥室中，以感测所述干燥室内的温度；和
    湿度传感器，设置在所述干燥室中，以感测所述干燥室内的湿度，
    所述送风风门配置成：根据所述温度传感器感测的温度和/或所述湿度传感器感测的湿度受控地导通或断开所述送风通道。
  8. 根据权利要求1所述的风冷冰箱，其中
    所述抽屉本体上设有用于抽拉所述抽屉本体的抽屉门，所述抽屉门的边缘处设置有密封条，以当所述抽屉本体完全容置于所述母座箱体时，在所述抽屉门与所述母座箱体之间形成密封。
  9. 一种风冷冰箱的控制方法，所述风冷冰箱包括多个储物间室和具有独立封闭空间的干燥室，所述干燥室设置在所述多个储物间室之一中，所述干燥室具有供冷却气流流入所述干燥室的送风通道，所述控制方法包括：
    导通所述送风通道以向所述干燥室提供温度为-12℃～-20℃的冷却气流，从而置换所述干燥室内气体；
    在导通所述送风通道的时间达到预设时间后，断开所述送风通道，以使所述干燥室在密封状态下升温。
  10. 根据权利要求9所述的控制方法，还包括：
    当所述干燥室内的相对湿度高于预设湿度值时导通所述送风通道；或者
    当所述干燥室内的温度高于预设温度值时导通所述送风通道。
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