CN116067070A - Refrigerator and vacuum drawer condensation prevention method thereof - Google Patents

Abstract

The invention discloses a refrigerator and a condensation preventing method of a vacuum drawer of the refrigerator, wherein a pre-cooling device is additionally arranged in the vacuum drawer, when the humidity of the vacuum drawer is too high, the pre-cooling device can pre-cool the local position, so that the humidity in the drawer is condensed at the local position, meanwhile, a special water collecting device is designed for collecting condensed water, the problem of the condensation of the vacuum drawer can be solved, the normal refrigerating performance of the vacuum drawer is not influenced, and the user experience is improved. In addition, the invention can realize the pre-cooling and dehumidifying functions without affecting the normal performances of the refrigerating chamber and the dry and wet drawer.

Description

Refrigerator and vacuum drawer condensation prevention method thereof

Technical Field

The invention relates to the technical field of refrigerators, in particular to a refrigerator and a vacuum drawer condensation prevention method thereof.

Background

For the refrigerator with the vacuum drawer, a user often puts food materials such as vegetables and fruits into the vacuum drawer in the actual use process, and due to the respiration of the food materials such as vegetables and fruits, a large amount of water vapor is generated in the inner space of the closed drawer. Because the design of current vacuum drawer is absolute airtight space, the unable outside of the very first time discharge drawer of steam that produces, lead to vacuum drawer inside to produce the condensation phenomenon. The internal condensation of the vacuum drawer is a very troublesome industrial problem at present, and the main reason is that the vacuum drawer is always made to be absolutely airtight in order to ensure the vacuum degree of the vacuum drawer. The absolute airtight design means that water vapor in the vacuum drawer cannot be discharged, and when the temperature in the vacuum drawer is gradually reduced and the humidity is gradually increased, the temperature reaches the dew point in the drawer, and finally the condensation phenomenon occurs in the vacuum drawer.

Disclosure of Invention

The embodiment of the invention aims to provide a refrigerator and a vacuum drawer condensation prevention method thereof, which can effectively prevent the vacuum drawer from condensation, and in addition, the normal performances of a refrigerating chamber and a dry and wet drawer are not affected while the precooling and dehumidification functions are realized.

To achieve the above object, an embodiment of the present invention provides a refrigerator including:

a case in which a storage chamber is formed, the storage chamber including at least a refrigerating chamber and a vacuum drawer; wherein, the vacuum drawer is provided with a precooling device;

a door for opening and closing the storage chamber;

the air supply channel is arranged in the box body, a precooling air door, a refrigerating air door and a first drawer air door are arranged on the air supply channel, the precooling air door is used for controlling the air outlet of the precooling device, the refrigerating air door is used for controlling the air outlet of the refrigerating chamber, and the first drawer air door is used for controlling the air outlet of the vacuum drawer;

the first humidity detection device is arranged in the vacuum drawer and is used for detecting the humidity of the vacuum drawer;

the controller is configured to:

acquiring a first humidity value detected by the first humidity detection device;

when the first humidity value is larger than a preset first humidity threshold value, controlling the pre-cooling air door to open so as to enable water vapor in the vacuum drawer to condense on the pre-cooling device, and closing the first drawer air door;

after the precooling air door is opened, when the first humidity value is smaller than a preset second humidity threshold value, controlling the precooling air door to be closed and opening the first drawer air door; wherein the second humidity threshold is less than the first humidity threshold.

As an improvement of the scheme, the precooling device comprises a precooling air supply pipe, a precooling wall surface and a water collecting device; the pre-cooling air door is used for controlling air outlet of the pre-cooling air supply pipe, the pre-cooling air supply pipe is arranged close to the pre-cooling wall surface, after the pre-cooling air door is opened, water vapor in the vacuum drawer is condensed on the pre-cooling wall surface, and the condensed water flows into the water collecting device.

As an improvement of the scheme, the storage room further comprises a dry drawer and a wet drawer, the refrigerating air duct further comprises a second drawer air door, and the second drawer air door is used for controlling the air outlet of the dry drawer and the wet drawer; then, the refrigerator further includes:

the second humidity detection device is arranged in the dry and wet drawer and is used for detecting the humidity of the dry and wet drawer;

the controller is further configured to:

acquiring a second humidity value detected by the second humidity detection device;

when the second humidity value is larger than a preset third humidity threshold value, controlling the second drawer air door to open;

and when the opening time of the second drawer air door is longer than the set time, controlling the second drawer air door to be closed.

As an improvement of the above, when the first humidity value is greater than a preset first humidity threshold, the controller is further configured to:

calculating a humidity difference between the first humidity value and the first humidity threshold;

acquiring a corresponding air door adjusting value according to the humidity difference value, and opening the pre-cooling air door according to the air door adjusting value; wherein, the air door adjusting value is in direct proportion to the humidity difference value.

As an improvement of the above, the refrigerator further includes:

the refrigerating temperature detection device is arranged in the refrigerating chamber and is used for detecting the real-time temperature of the refrigerating chamber;

the controller is further configured to:

acquiring the real-time temperature of the refrigerating chamber detected by the refrigerating temperature detection device;

when the real-time temperature is detected to be higher than the preset starting point temperature, controlling the refrigeration air door to be opened;

and when the real-time temperature is detected to be less than or equal to the starting point temperature, controlling the refrigeration air door to be closed.

In order to achieve the above purpose, the embodiment of the invention also provides a vacuum drawer condensation prevention method of the refrigerator, wherein a refrigerating chamber and a vacuum drawer are arranged in the refrigerator, and a precooling device is arranged on the vacuum drawer; an air supply duct is further arranged in the refrigerator, a precooling air door, a refrigerating air door and a first drawer air door are arranged on the air supply duct, the precooling air door is used for controlling air outlet of the precooling device, the refrigerating air door is used for controlling air outlet of the refrigerating chamber, and the first drawer air door is used for controlling air outlet of the vacuum drawer; the vacuum drawer anti-condensation method comprises the following steps:

acquiring a first humidity value detected by a first humidity detection device arranged in the vacuum drawer;

when the first humidity value is larger than a preset first humidity threshold value, controlling the pre-cooling air door to open so as to enable water vapor in the vacuum drawer to condense on the pre-cooling device, and closing the first drawer air door;

after the precooling air door is opened, when the first humidity value is smaller than a preset second humidity threshold value, controlling the precooling air door to be closed and opening the first drawer air door; wherein the second humidity threshold is less than the first humidity threshold.

As an improvement of the scheme, the precooling device comprises a precooling air supply pipe, a precooling wall surface and a water collecting device; the pre-cooling air door is used for controlling air outlet of the pre-cooling air supply pipe, the pre-cooling air supply pipe is arranged close to the pre-cooling wall surface, after the pre-cooling air door is opened, water vapor in the vacuum drawer is condensed on the pre-cooling wall surface, and the condensed water flows into the water collecting device.

As an improvement of the scheme, the refrigerator further comprises a dry drawer and a wet drawer, the refrigerating air duct further comprises a second drawer air door, and the second drawer air door is used for controlling air outlet of the dry drawer and the wet drawer; the vacuum drawer anti-condensation method further comprises the following steps:

acquiring a second humidity value detected by a second humidity detection device arranged in the vacuum drawer;

when the second humidity value is larger than a preset third humidity threshold value, controlling the second drawer air door to open;

and when the opening time of the second drawer air door is longer than the set time, controlling the second drawer air door to be closed.

As an improvement of the above solution, when the first humidity value is greater than a preset first humidity threshold, the controlling the opening of the precooling air door specifically includes:

calculating a humidity difference between the first humidity value and the first humidity threshold;

acquiring a corresponding air door adjusting value according to the humidity difference value, and opening the pre-cooling air door according to the air door adjusting value; wherein, the air door adjusting value is in direct proportion to the humidity difference value.

As an improvement of the above solution, the vacuum drawer anti-condensation method further includes:

acquiring the real-time temperature of the refrigerating chamber detected by a refrigerating temperature detection device arranged in the refrigerating chamber;

when the real-time temperature is detected to be higher than the preset starting point temperature, controlling the refrigeration air door to be opened;

and when the real-time temperature is detected to be less than or equal to the starting point temperature, controlling the refrigeration air door to be closed.

Compared with the prior art, the refrigerator and the condensation preventing method for the vacuum drawer are disclosed by the invention, the pre-cooling device is newly added in the vacuum drawer, when the humidity of the vacuum drawer is overlarge, the local position can be pre-cooled, so that the moisture in the drawer is condensed at the local position, meanwhile, the special water collecting device is designed for collecting the condensed water, the problem of slow vacuum drawer condensation can be solved, the normal refrigerating performance of the vacuum drawer is not influenced, and the user experience is improved. In addition, the invention can realize the pre-cooling and dehumidifying functions without affecting the normal performances of the refrigerating chamber and the dry and wet drawer.

Drawings

Fig. 1 is a schematic view of an external structure of a refrigerator according to an embodiment of the present invention;

fig. 2 is a schematic view of an internal structure of a refrigerator according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a refrigeration system in a refrigerator according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a precooling apparatus according to an embodiment of the present invention;

FIG. 5 is a schematic illustration of the positions of a plurality of dampers provided in an embodiment of the present invention;

FIG. 6 is a first workflow diagram of a controller provided by an embodiment of the present invention;

FIG. 7 is a second workflow diagram of a controller provided by an embodiment of the present invention;

FIG. 8 is a third workflow diagram of a controller provided by an embodiment of the present invention;

FIG. 9 is a fourth operational flow diagram of a controller provided by an embodiment of the present invention;

fig. 10 is a flowchart of a method for preventing condensation of a vacuum drawer of a refrigerator according to an embodiment of the present invention.

100 parts of a refrigerator; 1. a compressor; 2. a condenser; 3. an anti-condensation pipe; 4. drying the filter; 5. a capillary tube; 6. an evaporator; 7. a gas-liquid separator; 11. a refrigerating chamber; 12. a vacuum drawer; 13. a dry and wet drawer; 121. precooling air duct; 122. precooling the wall surface; 123. a water collecting device; 101. precooling air door; 102. a first drawer damper; 103. a refrigerating air door; 104. and a second drawer damper.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

The terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second" or the like may include one or more such features, either explicitly or implicitly. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a refrigerator 100 according to an embodiment of the present invention, where the refrigerator 100 has an approximately rectangular parallelepiped shape, and includes a case defining a storage space and a plurality of door bodies disposed at an opening of the case, and the door bodies include a door body housing located outside the case, a door body liner located inside the case, an upper end cover, a lower end cover, and a heat insulating layer located between the door body housing, the door body liner, the upper end cover, and the lower end cover; typically, the insulating layer is filled with a foaming material. The cabinet is provided with a chamber including a component storage chamber for storing components in the refrigerator, such as a compressor, and a storage space for storing food and the like. Wherein the storage space may be partitioned into a plurality of storage compartments, which may be configured as a refrigerating compartment 11, a vacuum drawer 12, a wet and dry drawer 13, a freezing compartment (not shown), a temperature changing compartment (not shown), etc., according to the use, referring to fig. 2. Each storage compartment corresponds to one or more doors, for example, in fig. 1, the upper storage compartment is provided with a double door. The door body can be pivoted at the opening of the box body and can also be opened in a drawer mode, so that drawer type storage is realized.

Referring to fig. 3, fig. 3 is a schematic view showing a structure of a refrigerating system in a refrigerator 100 according to an embodiment of the present invention, the refrigerating system including a compressor 1, a condenser 2, an anti-condensation pipe 3, a dry filter 4, a capillary 5, an evaporator 6, and a gas-liquid separator 7. The working processes of the refrigeration system comprise a compression process, a condensation process, a throttling process and an evaporation process.

The compression process comprises the following steps: when the power line of the refrigerator is inserted and the contact of the temperature controller is connected, the compressor 1 starts to work, the low-temperature and low-pressure refrigerant is sucked by the compressor 1, compressed into high-temperature and high-pressure overheat gas in the cylinder of the compressor 1 and then discharged to the condenser 2; the condensation process is as follows: the high-temperature and high-pressure refrigerant gas radiates heat through the condenser 2, the temperature is continuously reduced, the refrigerant gas is gradually cooled into normal-temperature and high-pressure saturated steam, the saturated steam is further cooled into saturated liquid, the temperature is not reduced any more, the temperature at the moment is called as condensing temperature, and the pressure of the refrigerant in the whole condensing process is almost unchanged; the throttling process is as follows: the condensed refrigerant saturated liquid is filtered by a dry filter 4 to remove moisture and impurities, and then flows into a capillary tube 5, throttling and depressurization are carried out through the capillary tube, and the refrigerant is changed into normal-temperature and low-pressure wet vapor; the evaporation process is as follows: the wet vapor with normal temperature and low pressure starts to absorb heat in the evaporator 6 for vaporization, so that the temperature of the evaporator and the surrounding temperature are reduced, the refrigerant is changed into low-temperature and low-pressure gas, the refrigerant coming out of the evaporator 6 returns to the compressor 1 again after passing through the gas-liquid separator 7, the process is repeated, and the heat in the refrigerator is transferred into the air outside the refrigerator, so that the purpose of refrigeration is realized.

Specifically, the air supply process of the existing vacuum drawer is as follows: cold air is blown out from the air duct and then is blown to the top of the vacuum drawer 12 through the air supply pipe, then flows to the peripheral shell area outside the drawer, and finally is converged to the evaporator through the air return port of the refrigerating chamber, so that the temperature control of the vacuum drawer is realized. The vacuum drawer 12 is generally used for placing fruits and vegetables, the food materials are more in moisture, the drawer is a closed space, and the humidity inside the vacuum drawer 12 is gradually increased along with the time, until condensation is gradually generated. The condensation is too much, which is unfavorable for storing fruits and vegetables.

Through testing the condensation condition of the vacuum drawer 12, the condensation position is mainly concentrated at the rear position of the vacuum drawer 12, and other positions have no obvious condensation phenomenon. The cause of this phenomenon was analyzed: considering that the corresponding shell area at the right rear position of the vacuum drawer is close to the air return opening of the refrigerating chamber, cold air in the whole refrigerating chamber can pass through the position, so that the temperature is lower, and the problem of condensation is easy to generate. In general, the vacuum drawer 12 can control air supply through opening and closing of its independent air supply air door according to the gear selected by the user, and the condensation position is the right rear position of the drawer, and the pre-cooling cannot be realized by the existing air duct structure. In the embodiment of the invention, a pre-cooling device is arranged in the vacuum drawer 12 to realize local pre-cooling of the interior of the vacuum drawer, and the principle that the temperature of the pre-cooling position is low and water is easy to condense is utilized to condense the wet air in the interior of the vacuum drawer 12, and meanwhile, a water collecting device is matched and designed to collect condensed water.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a precooling apparatus according to an embodiment of the present invention, where the precooling apparatus includes a precooling air supply pipe 121, a precooling wall 122, and a water collecting device 123; the pre-cooling air supply pipe 121 is controlled to be air-out through a pre-cooling air door, the pre-cooling air supply pipe 121 is arranged close to the pre-cooling wall surface 122, after the pre-cooling air door is opened, water vapor in the vacuum drawer 12 is condensed on the pre-cooling wall surface 122, and the condensed water flows into the water collecting device 123. Illustratively, the pre-cooling wall 122 is an inherent inner wall or an additional newly added wall in the vacuum drawer 12, and a hemispherical protrusion may be disposed on the pre-cooling wall 122, so that the contact area with air can be increased, thereby forming more condensation water.

Referring to fig. 5, fig. 5 is a schematic diagram of the positions of a plurality of air doors provided in an embodiment of the present invention, in which a pre-cooling air door 101, a refrigerating air door 103, a first drawer air door 102 and a second drawer air door 104 are provided on an air supply duct. The pre-cooling air door 101 is used for controlling air outlet of the pre-cooling device, so that moisture in the vacuum drawer 12 is condensed; the refrigeration air door 103 is used for controlling the air outlet of the refrigeration chamber 11 to provide cold for the refrigeration chamber 11; the first drawer air door 102 is used for controlling the air outlet of the vacuum drawer 12 to provide cold energy for the vacuum drawer 12; the second drawer damper 104 is used for controlling the air outlet of the wet and dry drawer 13 to influence the humidity of the wet and dry drawer 13.

Specifically, the refrigerator further comprises a first humidity detection device and a second humidity detection device. The first humidity detection device is arranged in the vacuum drawer 12 and is used for detecting the humidity of the vacuum drawer 12; the second humidity detection device is arranged in the dry and wet drawer 13 and is used for detecting the humidity of the dry and wet drawer 13.

Specifically, the controller is configured to: acquiring a first humidity value detected by the first humidity detection device; when the first humidity value is larger than a preset first humidity threshold value, controlling the pre-cooling air door to open so as to enable water vapor in the vacuum drawer to condense on the pre-cooling device, and closing the first drawer air door; after the precooling air door is opened, when the first humidity value is smaller than a preset second humidity threshold value, controlling the precooling air door to be closed and opening the first drawer air door; wherein the second humidity threshold is less than the first humidity threshold.

Referring to fig. 6, fig. 6 is a first workflow diagram of a controller according to an embodiment of the present invention, the controller being configured to perform steps S11 to S16:

s11, acquiring a first humidity value of the vacuum drawer 12, and then entering step S12.

Illustratively, after detecting that the vacuum drawer 12 stores the articles, the controller may restart the first humidity detection device to detect the humidity of the vacuum drawer 12, and the controller may autonomously know whether the vacuum drawer 12 stores the articles, so as to control the humidity and the cooling capacity of the vacuum drawer 12. The detection mode of the stored article can comprise: weight detection or picture detection, such as weight detection, wherein a weight sensor is arranged on the vacuum drawer 12, and whether the drawer stores articles or not is determined by comparing the real-time weight with the initial weight (the weight of the vacuum drawer when the articles are not placed); for another example, a camera is provided inside the vacuum drawer 12, and whether the drawer stores articles is determined by taking a picture and identifying the picture.

S12, judging whether the first humidity value R0 is larger than the first humidity threshold, if so, entering a step S14, and if not, entering a step S13.

Illustratively, the first humidity threshold is 90%.

And S13, when the first humidity value is smaller than or equal to a preset first humidity threshold value, the humidity is moderate at the moment, dehumidification is not needed, a common operation mode is entered, at the moment, the precooling air door 101 is closed, and the first drawer air door 102 is opened.

And S14, when the first humidity value is greater than a preset first humidity threshold value, controlling the pre-cooling air door 101 to be opened so as to enable water vapor in the vacuum drawer to be condensed on the pre-cooling device, closing the first drawer air door 102, suspending the transportation of cold air for enabling the vacuum drawer 12 to be cooled, and then entering step S15.

S15, judging whether the first humidity value R0 is smaller than a preset second humidity threshold, if so, entering a step S16, and if not, continuing to execute the step S14.

Illustratively, the second humidity threshold is 50%.

S16, after the pre-cooling air door is opened, when the first humidity value R0 is smaller than a preset second humidity threshold value, the humidity inside the drawer is lower at the moment, pre-cooling can be stopped at the moment, the pre-cooling air door 101 is controlled to be closed, and the first drawer air door 102 is controlled to be opened.

Specifically, when the first humidity value is greater than a preset first humidity threshold, the controller is further configured to: calculating a humidity difference between the first humidity value and the first humidity threshold; acquiring a corresponding air door adjusting value according to the humidity difference value, and opening the pre-cooling air door according to the air door adjusting value; wherein, the air door adjusting value is in direct proportion to the humidity difference value.

For example, when the pre-cooling air door is started, the opening angle of the pre-cooling air door can be adjusted according to the humidity difference value between the first humidity value and the first humidity threshold, and the larger the air door adjusting value is, the larger the corresponding opening angle is, and the more obvious the pre-cooling effect is.

Specifically, the controller is further configured to: acquiring a second humidity value R1 detected by the second humidity detection device; when the second humidity value R1 is greater than a preset third humidity threshold, controlling the second drawer damper 104 to open; and when the second drawer air door 104 is opened for a longer time than the set time, controlling the second drawer air door 104 to be closed.

Illustratively, the dry and wet drawer 13 has its own second drawer damper 104 to control the amount of cooling, which can dehumidify when the second drawer damper 104 is opened. The third humidity threshold is 60%, and the set time period is 60min, 40min or 30min (which can be set by the user). When the second humidity value R1 is greater than 60%, the second drawer damper 104 is started, and when the opening duration of the second drawer damper 104 reaches a set duration, the humidity is reduced greatly, and the second drawer damper 104 is closed.

The refrigerator further includes: a refrigerating temperature detecting device, provided in the refrigerating chamber 11, for detecting a real-time temperature of the refrigerating chamber 11;

the controller is further configured to: acquiring the real-time temperature of the refrigerating chamber 11 detected by the refrigerating temperature detecting device; when the real-time temperature is detected to be greater than a preset starting point temperature, controlling the refrigeration air door 103 to be opened; and when the real-time temperature is detected to be less than or equal to the starting point temperature, the refrigerating damper 103 is controlled to be closed.

Further, referring to fig. 7, fig. 7 is a second working flowchart of the controller according to the embodiment of the present invention, and when the refrigerating chamber 11 needs to be refrigerated, the operation logic of the four dampers is shown in fig. 7.

When the first humidity value R0 in the vacuum drawer exceeds the first humidity threshold value (90%), the precooling dehumidification mode is started, otherwise, the normal mode is continuously operated. When the precooling dehumidification mode is started, when the real-time temperature of the refrigerating chamber is greater than the starting point temperature, namely, when the refrigerating chamber 11 needs to continue to refrigerate under the working condition at the moment, whether the humidity inside the dry and wet drawers 13 meets the requirement is firstly judged, the second humidity value R1 inside the wet drawers 13 is greater than a set third humidity threshold value (60%), namely, the second humidity value does not meet the requirement at the moment, and the air blowing dehumidification needs to be continued. In this case, the refrigeration damper 103, the second drawer damper 104, and the pre-cooling damper 101 are all opened, and cold air is supplied to the refrigeration compartment, the wet and dry drawer, and the cold air at the pre-cooling position, respectively, and the first drawer damper 102 is closed. At this time, the fan and the compressor of the refrigerating chamber are operated for 60min. After 60min, the first humidity value R0 in the vacuum drawer is monitored again to be lower than the second humidity threshold value (50%), if the requirement is met, the precooling dehumidification mode is stopped, and the normal operation mode is restored.

The interior R1 of the wet drawers is smaller than the third humidity threshold (60%), that is, the humidity meets the requirement at this time, and the dry and wet drawers 13 do not need to continue to blow and dehumidify. In this case, the refrigeration damper and the pre-cooling damper are opened to supply cold air to the refrigeration compartment and the pre-cooling position, respectively, and the first drawer damper 102 and the second drawer damper 104 are closed. At this time, the fan and the compressor of the refrigerating chamber are started for 40min. After 40min, it is monitored again whether the first humidity value R0 inside the vacuum drawer 12 is lower than the second humidity threshold (50%), if the demand is satisfied, the pre-cooling dehumidification mode is stopped, and the normal operation mode is resumed.

Further, referring to fig. 8, fig. 8 is a third working flowchart of the controller according to the embodiment of the present invention, and when the refrigerating chamber 11 does not need to be refrigerated, the operation logic of the four dampers is as shown in fig. 8.

When the first humidity value R0 of the vacuum drawer 12 exceeds the first humidity threshold (90%), the pre-cooling dehumidification mode is turned on, otherwise the normal mode is continued. When the precooling dehumidification mode is started, when the real-time temperature of the refrigerating chamber is smaller than the starting point temperature, namely, the refrigerating chamber 11 is not required to be continuously refrigerated at the moment: similarly, it is first determined whether the humidity inside the wet and dry drawers 13 meets the requirement, and the second humidity value R1 inside the wet drawers 13 is greater than the third humidity threshold (60%), that is, the humidity does not meet the requirement at this time, and it is necessary to continue to blow and dehumidify. In this case, the second drawer damper 104 and the pre-cooling damper 101 are opened to supply cold air to the wet and dry drawers 13 and the pre-cooling position, respectively, and the refrigeration damper 103 and the first drawer damper 102 are closed. At this time, the fan and the compressor of the refrigerating chamber are started for 40min. After 40 minutes, again monitor whether the first humidity value inside the vacuum drawer 12 is lower than the second humidity threshold (50%), if the demand is satisfied, the pre-cooling dehumidification mode is stopped, and the normal mode is restored.

The interior R1 of the wet drawers is smaller than the set third humidity threshold (60%), namely, the humidity meets the requirement at the moment, and the dry and wet drawers 13 do not need to continuously blow and dehumidify. In this case, the pre-cooling damper 101 is opened to provide cold air only to the cold pre-cooling position, and the refrigerating damper 103, the first drawer damper 102, and the second drawer damper 104 are closed for 30min. After 30min, monitoring whether the first humidity value R0 in the vacuum drawer is lower than the second humidity threshold value (50%), if so, stopping the precooling dehumidification mode, and recovering the normal operation mode.

Further, referring to fig. 9, fig. 9 is a fourth operation flow chart of the controller provided by the embodiment of the present invention, when the vacuum drawer is in the ice temperature range (the working conditions of the vacuum drawer in the fruit and vegetable range are all described above), the stored food material is usually meat, and the moisture content of the food material is less, and the condensation is slight compared with the fruit and vegetable range. Therefore, under the working condition of the gear operation, the control logic firstly meets the performance priority of the refrigerating chamber, the wet and dry drawer and the vacuum drawer. When the internal humidity of the vacuum drawer 12 exceeds a threshold, the pre-cooling dehumidification mode is turned on. At this time, the fan and the compressor are started, the precooling air door 101 is opened, and other air doors are judged and determined to be opened or not according to respective conditions. After 60 minutes of opening, judging whether the internal humidity of the vacuum drawer 12 is lower than a threshold value (50%), if the requirements are met, stopping the precooling dehumidification mode, and recovering the normal mode.

Compared with the prior art, the refrigerator 100 disclosed by the invention has the advantages that the precooling device is newly added in the vacuum drawer, when the humidity of the vacuum drawer is too high, the local position can be precooled, so that the humidity in the drawer is condensed at the local position, meanwhile, the special water collecting device is designed for collecting condensed water, the problem of condensation of the vacuum drawer can be solved, the normal refrigerating performance of the vacuum drawer is not influenced, and the user experience is improved. In addition, the invention can realize the pre-cooling and dehumidifying functions without affecting the normal performances of the refrigerating chamber and the dry and wet drawer.

Referring to fig. 10, fig. 10 is a flowchart of a method for preventing condensation of a vacuum drawer of a refrigerator according to an embodiment of the present invention, wherein a refrigerating chamber and a vacuum drawer are provided in the refrigerator, and a pre-cooling device is provided on the vacuum drawer; an air supply duct is further arranged in the refrigerator, a precooling air door, a refrigerating air door and a first drawer air door are arranged on the air supply duct, the precooling air door is used for controlling air outlet of the precooling device, the refrigerating air door is used for controlling air outlet of the refrigerating chamber, and the first drawer air door is used for controlling air outlet of the vacuum drawer; the vacuum drawer anti-condensation method comprises the following steps:

s1, acquiring a first humidity value detected by a first humidity detection device arranged in the vacuum drawer;

s2, when the first humidity value is larger than a preset first humidity threshold value, controlling the pre-cooling air door to be opened so that water vapor in the vacuum drawer is condensed on the pre-cooling device, and closing the first drawer air door;

s3, after the precooling air door is opened, when the first humidity value is smaller than a preset second humidity threshold value, controlling the precooling air door to be closed and opening the first drawer air door; wherein the second humidity threshold is less than the first humidity threshold.

Specifically, the precooling device comprises a precooling air supply pipe, a precooling wall surface and a water collecting device; the pre-cooling air door is used for controlling air outlet of the pre-cooling air supply pipe, the pre-cooling air supply pipe is arranged close to the pre-cooling wall surface, after the pre-cooling air door is opened, water vapor in the vacuum drawer is condensed on the pre-cooling wall surface, and the condensed water flows into the water collecting device.

Specifically, the refrigerator further comprises a dry drawer and a wet drawer, the refrigerating air duct further comprises a second drawer air door, and the second drawer air door is used for controlling air outlet of the dry drawer and the wet drawer; the vacuum drawer anti-condensation method further comprises the following steps: acquiring a second humidity value detected by a second humidity detection device arranged in the vacuum drawer; when the second humidity value is larger than a preset third humidity threshold value, controlling the second drawer air door to open; and when the opening time of the second drawer air door is longer than the set time, controlling the second drawer air door to be closed.

Specifically, when the first humidity value is greater than a preset first humidity threshold, the controlling the pre-cooling air door to open specifically includes: calculating a humidity difference between the first humidity value and the first humidity threshold; acquiring a corresponding air door adjusting value according to the humidity difference value, and opening the pre-cooling air door according to the air door adjusting value; wherein, the air door adjusting value is in direct proportion to the humidity difference value.

Specifically, the vacuum drawer anti-condensation method further comprises the following steps: acquiring the real-time temperature of the refrigerating chamber detected by a refrigerating temperature detection device arranged in the refrigerating chamber; when the real-time temperature is detected to be higher than the preset starting point temperature, controlling the refrigeration air door to be opened; and when the real-time temperature is detected to be less than or equal to the starting point temperature, controlling the refrigeration air door to be closed.

It should be noted that, the method for preventing condensation of a vacuum drawer according to the embodiments of the present invention may be implemented by the controller in the refrigerator according to the above embodiments, and the specific working process may refer to the above embodiments and will not be repeated herein.

Compared with the prior art, the vacuum drawer condensation prevention method of the refrigerator has the advantages that the precooling device is additionally arranged in the vacuum drawer, when the humidity of the vacuum drawer is too high, the local position can be precooled, so that the humidity in the drawer is condensed at the local position, meanwhile, the special water collecting device is designed for collecting condensation water, the problem of slow vacuum drawer condensation can be solved, the normal refrigerating performance of the vacuum drawer is not influenced, and the user experience is improved. In addition, the invention can realize the pre-cooling and dehumidifying functions without affecting the normal performances of the refrigerating chamber and the dry and wet drawer.

While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.

Claims (10)

1. A refrigerator, comprising:

a case in which a storage chamber is formed, the storage chamber including at least a refrigerating chamber and a vacuum drawer; wherein, the vacuum drawer is provided with a precooling device;

a door for opening and closing the storage chamber;

the air supply channel is arranged in the box body, a precooling air door, a refrigerating air door and a first drawer air door are arranged on the air supply channel, the precooling air door is used for controlling the air outlet of the precooling device, the refrigerating air door is used for controlling the air outlet of the refrigerating chamber, and the first drawer air door is used for controlling the air outlet of the vacuum drawer;

the first humidity detection device is arranged in the vacuum drawer and is used for detecting the humidity of the vacuum drawer;

the controller is configured to:

acquiring a first humidity value detected by the first humidity detection device;

when the first humidity value is larger than a preset first humidity threshold value, controlling the pre-cooling air door to open so as to enable water vapor in the vacuum drawer to condense on the pre-cooling device, and closing the first drawer air door;

after the precooling air door is opened, when the first humidity value is smaller than a preset second humidity threshold value, controlling the precooling air door to be closed and opening the first drawer air door; wherein the second humidity threshold is less than the first humidity threshold.

2. The refrigerator of claim 1, wherein the pre-cooling device comprises a pre-cooling air supply pipe, a pre-cooling wall surface and a water collecting device; the pre-cooling air door is used for controlling air outlet of the pre-cooling air supply pipe, the pre-cooling air supply pipe is arranged close to the pre-cooling wall surface, after the pre-cooling air door is opened, water vapor in the vacuum drawer is condensed on the pre-cooling wall surface, and the condensed water flows into the water collecting device.

3. The refrigerator of claim 1, wherein the storage compartment further comprises a wet and dry drawer, the refrigeration duct further comprises a second drawer damper for controlling the air outlet of the wet and dry drawer; then, the refrigerator further includes:

the second humidity detection device is arranged in the dry and wet drawer and is used for detecting the humidity of the dry and wet drawer;

the controller is further configured to:

acquiring a second humidity value detected by the second humidity detection device;

when the second humidity value is larger than a preset third humidity threshold value, controlling the second drawer air door to open;

and when the opening time of the second drawer air door is longer than the set time, controlling the second drawer air door to be closed.

4. The refrigerator of claim 1, wherein when the first humidity value is greater than a preset first humidity threshold, the controller is further configured to:

calculating a humidity difference between the first humidity value and the first humidity threshold;

acquiring a corresponding air door adjusting value according to the humidity difference value, and opening the pre-cooling air door according to the air door adjusting value; wherein, the air door adjusting value is in direct proportion to the humidity difference value.

5. The refrigerator of claim 1, further comprising:

the refrigerating temperature detection device is arranged in the refrigerating chamber and is used for detecting the real-time temperature of the refrigerating chamber;

the controller is further configured to:

acquiring the real-time temperature of the refrigerating chamber detected by the refrigerating temperature detection device;

when the real-time temperature is detected to be higher than the preset starting point temperature, controlling the refrigeration air door to be opened;

and when the real-time temperature is detected to be less than or equal to the starting point temperature, controlling the refrigeration air door to be closed.

6. The vacuum drawer condensation prevention method of the refrigerator is characterized in that a refrigerating chamber and a vacuum drawer are arranged in the refrigerator, and a precooling device is arranged on the vacuum drawer; an air supply duct is further arranged in the refrigerator, a precooling air door, a refrigerating air door and a first drawer air door are arranged on the air supply duct, the precooling air door is used for controlling air outlet of the precooling device, the refrigerating air door is used for controlling air outlet of the refrigerating chamber, and the first drawer air door is used for controlling air outlet of the vacuum drawer; the vacuum drawer anti-condensation method comprises the following steps:

acquiring a first humidity value detected by a first humidity detection device arranged in the vacuum drawer;

when the first humidity value is larger than a preset first humidity threshold value, controlling the pre-cooling air door to open so as to enable water vapor in the vacuum drawer to condense on the pre-cooling device, and closing the first drawer air door;

after the precooling air door is opened, when the first humidity value is smaller than a preset second humidity threshold value, controlling the precooling air door to be closed and opening the first drawer air door; wherein the second humidity threshold is less than the first humidity threshold.

7. The method for preventing condensation of a vacuum drawer of a refrigerator as claimed in claim 6, wherein the pre-cooling device comprises a pre-cooling blast pipe, a pre-cooling wall surface and a water collecting device; the pre-cooling air door is used for controlling air outlet of the pre-cooling air supply pipe, the pre-cooling air supply pipe is arranged close to the pre-cooling wall surface, after the pre-cooling air door is opened, water vapor in the vacuum drawer is condensed on the pre-cooling wall surface, and the condensed water flows into the water collecting device.

8. The method of claim 6, wherein the refrigerator further comprises a wet and dry drawer, the refrigerating air duct further comprises a second drawer air door, and the second drawer air door is used for controlling the air outlet of the wet and dry drawer; the vacuum drawer anti-condensation method further comprises the following steps:

acquiring a second humidity value detected by a second humidity detection device arranged in the vacuum drawer;

when the second humidity value is larger than a preset third humidity threshold value, controlling the second drawer air door to open;

and when the opening time of the second drawer air door is longer than the set time, controlling the second drawer air door to be closed.

9. The method for preventing condensation of a vacuum drawer of a refrigerator as claimed in claim 6, wherein when the first humidity value is greater than a preset first humidity threshold, the controlling the pre-cooling damper to open specifically comprises:

calculating a humidity difference between the first humidity value and the first humidity threshold;

acquiring a corresponding air door adjusting value according to the humidity difference value, and opening the pre-cooling air door according to the air door adjusting value; wherein, the air door adjusting value is in direct proportion to the humidity difference value.

10. The method for preventing condensation of a vacuum drawer of a refrigerator as claimed in claim 6, further comprising:

acquiring the real-time temperature of the refrigerating chamber detected by a refrigerating temperature detection device arranged in the refrigerating chamber;

when the real-time temperature is detected to be higher than the preset starting point temperature, controlling the refrigeration air door to be opened;

and when the real-time temperature is detected to be less than or equal to the starting point temperature, controlling the refrigeration air door to be closed.

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