CN115682557A - Humidity adjusting method of refrigerator - Google Patents

Abstract

The invention provides a humidity adjusting method of a refrigerator. Wherein the refrigerator includes: a box body, wherein a storage space is limited in the box body; sealed drawer, set up in the storing space, include: the drawer comprises a drawer cover plate and a drawer body arranged below the drawer cover plate; and the semiconductor refrigerating sheet is provided with a first end face facing the inside of the sealed drawer and a second end face facing the outside of the sealed drawer, and the adjusting method comprises the following steps: acquiring target humidity set by a user; detecting the actual humidity in the sealed drawer; and determining the electrifying direction of the semiconductor refrigerating sheet according to the actual humidity and the target humidity so as to realize the conversion of the cold end surface and the hot end surface of the first end surface and further adjust the humidity in the sealed drawer. According to the scheme of the invention, the humidity in the sealed drawer can be adjusted and compensated, and the constant humidity can be realized; the automatic circulation of moisture absorption and desorption is realized without the manual intervention of a user, and the use experience of the user is improved.

Description

Humidity adjusting method of refrigerator

Technical Field

The invention relates to the technical field of household appliances, in particular to a humidity adjusting method of a refrigerator.

Background

With the increasing development of society and the continuous improvement of living standard of people, the pace of life of people is faster and faster, and a lot of food can be purchased and stored at one time. In order to ensure the storage effect of food, a refrigerator has become one of household appliances indispensable to people's daily life.

Some refrigerators are currently provided with a drying chamber for storing some items that require a dry environment. The drying in the drying chamber is often achieved in the following way: the air outlet of the cold storage air duct blows out dry cold air to enter the drying chamber to take away moisture in the cold storage air duct and stored food, the cold air flows through the evaporator through the air return opening, the moisture is condensed into ice in the evaporator and changed into dry cold air again to blow out, and the drying purpose is achieved through circulation.

However, the above method has the following disadvantages: firstly, as the circulating cold air can bring the peculiar smell into the refrigerator for a long time, the peculiar smell can be adsorbed by the articles in the drying chamber, and the quality of the original smell is reduced. For example: if heavy-smell foods such as durian are originally stored in the refrigerator, the smell of the durian can be brought into the drying chamber by circulating cold air; secondly, only the drying function can be realized, the humidity cannot be increased at the same time, and the function is single.

For the purpose of adjusting humidity, the solution is as follows: the sealing performance of the drawer is improved or the one-way breathable film is combined, so that the moisture escape is avoided, but the humidity cannot be automatically adjusted in the mode, and the moisture evaporation of the articles can be slowed down. Or increasing the humidity within the drawer, for example, using an ultrasonic humidifier or the like, but in such a manner that excessive moisture may adhere to the item, causing it to spoil; the user need regularly add water, guarantees humidifying equipment's normal work, influences user's use and experiences.

Disclosure of Invention

The invention aims to realize automatic humidity adjustment in a sealed drawer of a refrigerator and improve the use experience of a user.

A further object of the present invention is to prevent the interior of the sealed drawer from being affected by external odors, thereby enhancing the storage effect.

Particularly, the present invention provides a humidity adjusting method of a refrigerator, wherein the refrigerator includes: a box body, the interior of which is limited with a storage space; sealed drawer sets up in the storing space, includes: the drawer comprises a drawer cover plate and a drawer body arranged below the drawer cover plate; and the semiconductor refrigerating sheet is provided with a first end face facing the inside of the sealed drawer and a second end face facing the outside of the sealed drawer, and the adjusting method comprises the following steps: acquiring target humidity set by a user; detecting the actual humidity in the sealed drawer; and determining the electrifying direction of the semiconductor refrigerating sheet according to the actual humidity and the target humidity so as to realize the conversion of the cold end surface and the hot end surface of the first end surface and further adjust the humidity in the sealed drawer.

Optionally, the through-hole has been seted up to the rear wall of drawer body, and the refrigerator still includes: humidity controller inlays locates through-hole department, and it includes: the module integrated shell and the humidity control module, wherein a cavity is limited in the module integrated shell, and the humidity control module is inserted in the cavity.

Optionally, the humidity control module comprises: the semiconductor refrigeration piece is embedded in the heat insulation frame, the two heat conduction metal plates are attached to the first end face and the second end face respectively, the area of each heat conduction metal plate covers the heat insulation frame, and the guide plate is attached to and wraps the two heat conduction metal plates.

Optionally, the step of determining the energizing direction of the semiconductor chilling plate according to the actual humidity and the target humidity includes: judging whether the actual humidity is less than the target humidity; if so, the electrifying direction of the semiconductor refrigerating sheet is switched to enable the first end face to become a hot end face, the moisture on the guide plate is continuously evaporated by the first end face, and the humidity in the sealed drawer is increased.

Optionally, when the actual humidity is greater than the target humidity, the energizing direction of the semiconductor chilling plate is switched to enable the first end face to become a cold end face, water vapor inside the sealed drawer is condensed at the first end face to form water drops, and the humidity inside the sealed drawer is reduced.

Optionally, an operation panel is disposed on an upper surface of the drawer cover, and the target humidity is obtained through the operation panel.

Optionally, the refrigerator further comprises: and the humidity sensor is arranged in the sealed drawer and used for detecting the actual humidity.

Optionally, two electrode wires are arranged at the top end of the semiconductor refrigeration piece to be connected with a direct current power supply, and the first end face and the second end face are switched by switching the electrifying direction to realize the conversion between the cold end face and the hot end face.

Optionally, the heat insulating frame is made of a poor thermal conductor material for blocking and reducing a thermal bridge effect of the first end face and the second end face.

Optionally, the flow guide plate is made of a hydrophilic and water-guiding material, the flow guide plate is in a U shape, and the front and rear surfaces of the flow guide plate are provided with circular or grid-shaped matrix windows, so that heat of the first end surface and the second end surface is dissipated and absorbed, and moisture is promoted to be absorbed and diffused in the flow guide plate.

According to the method for adjusting the humidity of the refrigerator, the target humidity set by a user is obtained, the actual humidity in the sealed drawer is detected, and the electrifying direction of the semiconductor refrigerating sheet is determined according to the actual humidity and the target humidity, so that the first end face realizes the conversion between the cold end face and the hot end face, and the humidity in the sealed drawer is adjusted. The humidity adjusting mode is suitable for any type of refrigerator, can adjust and compensate the humidity in the sealed drawer and can realize constancy; the situation that only a drying chamber or a humidity chamber with single function can be realized before is solved; the automatic circulation of moisture absorption and desorption is realized without the manual intervention of a user, and the use experience of the user is improved.

Further, according to the humidity adjusting method of the refrigerator, under the condition that the first end face is a cold end face, water vapor inside the sealed drawer is condensed on the first end face to form water drops, and the humidity inside the sealed drawer is reduced; under the condition that the first end face is a hot end face, moisture on the guide plate is continuously evaporated by the first end face, and the humidity inside the sealed drawer rises. Humidity controller utilizes semiconductor refrigeration characteristic, realizes sealing the inside humidity control of drawer through the semiconductor refrigeration piece, avoids the wind circulation to lead to sealing the inside influence that receives outside peculiar smell of drawer, can also avoid traditional humidification equipment to cause too much moisture to adhere to and impel the rotten condition on food, effectively promotes the storage effect of article.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic structural view of a refrigerator to which a humidity adjusting method of the refrigerator according to one embodiment of the present invention is applied;

FIG. 2 is a schematic view of the structure of a sealed drawer in the refrigerator of FIG. 1;

FIG. 3 is an exploded view of the drawer body and humidity controller of the refrigerator of FIG. 1;

FIG. 4 is an exploded schematic view of a humidity controller in the refrigerator of FIG. 1;

FIG. 5 is an exploded schematic view of a humidity control module in the refrigerator of FIG. 1;

fig. 6 is a schematic view of a humidity adjusting method of a refrigerator according to one embodiment of the present invention; and

fig. 7 is a detailed flowchart of a humidity adjusting method of a refrigerator according to one embodiment of the present invention.

Detailed Description

The embodiment provides a humidity adjusting method for a refrigerator, which can adjust and compensate the humidity in a sealed drawer and can realize constancy; the problem that only a drying chamber or a humidity chamber with single function can be realized in the prior art is solved; the automatic circulation of moisture absorption and desorption is realized without the manual intervention of a user, and the use experience of the user is improved. Fig. 1 is a schematic structural view of a refrigerator 100 to which a humidity adjusting method of the refrigerator according to one embodiment of the present invention is applied; FIG. 2 is a schematic structural view of a sealed drawer 200 in the refrigerator 100 of FIG. 1; fig. 3 is an exploded view of the drawer body 220 and the humidity controller 300 in the refrigerator 100 of fig. 1; fig. 4 is an exploded schematic view of the humidity controller 300 in the refrigerator 100 of fig. 1; and fig. 5 is an exploded schematic view of the humidity control module 320 in the refrigerator 100 of fig. 1. As shown in fig. 1 to 5, the refrigerator 100 may generally include: the box body 110, the sealed drawer 200 and the semiconductor refrigeration piece 321.

Wherein a storage space is defined inside the case body 110. In fact, the number and structure of the storage spaces can be configured as required. And the storage space can be configured into a refrigerating space, a freezing space, a temperature changing space or a fresh-keeping space according to different purposes. Each storage space may be divided into a plurality of storage regions by a partition plate, and the articles may be stored by a rack or a drawer. As shown in fig. 1, the refrigerator 100 of the present embodiment may have three storage spaces defined therein from top to bottom.

The sealed drawer 200 may be disposed in the storage space, including: a drawer cover 210 and a drawer body 220 disposed below the drawer cover 210. The semiconductor chilling plate 321 has a first end 331 facing the inside of the sealing drawer 200 and a second end 332 facing the outside of the sealing drawer 200. Further, the refrigerator 100 may further include: a door 120 and a humidity controller 300.

The door 120 may be disposed on a front surface of the cabinet 110 to enclose the storage space. The door bodies 120 may be disposed corresponding to the storage spaces, that is, each storage space corresponds to one or more door bodies 120. The door 120 may be opened by pivoting or may be opened by sliding, for example, the door 120 corresponding to the first storage space above is opened by pivoting, and the rest storage spaces may be opened by sliding.

In one specific embodiment, the sealed drawer 200 may be disposed in the storage space and includes: a drawer cover 210 having an operation panel 211 provided on an upper surface thereof; the drawer body 220 is disposed below the drawer cover 210, and a through hole 221 is formed in a rear wall thereof. The humidity controller 300 may be embedded at the through hole 221, and configured to regulate humidity inside the hermetic drawer 200. As shown in fig. 4, the humidity controller 300 may include: a module integration case 310 having a cavity defined therein; and a humidity control module 320 inserted in the cavity.

The humidity controller 300 in this embodiment is suitable for any type of refrigerator, such as an air-cooled refrigerator and a direct-cooled refrigerator, and can adjust and compensate the humidity in the sealed drawer 200 and achieve constancy; the situation that only a drying chamber or a humidity chamber with single function can be realized before is solved; the automatic circulation of moisture absorption and desorption is realized without the manual intervention of a user, and the use experience of the user is improved.

In one particular embodiment, as shown in FIG. 5, the humidity control module 320 includes: the refrigerator comprises a semiconductor refrigeration piece 321, an insulating frame 322, two heat conducting metal plates 323 and a flow guide plate 324. The semiconductor refrigeration piece 321 is provided with a first end surface 331 facing the inside of the sealed drawer 200 and a second end surface 332 facing the outside of the sealed drawer 200, the semiconductor refrigeration piece 321 is embedded in the heat insulation frame 322, the two heat conduction metal plates 323 are respectively attached to the first end surface 331 and the second end surface 332, the area of each heat conduction metal plate 323 covers the heat insulation frame 322, and the guide plate 324 is attached to and wraps the two heat conduction metal plates 323.

The semiconductor chilling plate 321 is provided at the top thereof with two electrode wires 333 for connecting a dc power supply, and the first end surface 331 and the second end surface 332 are switched between a cold end surface and a hot end surface by switching the power direction. The two electrode lines 333 may be red and black columns, respectively. Specifically, the semiconductor refrigeration chip 321 can utilize the Peltier effect of semiconductor materials, when direct current passes through a galvanic couple formed by connecting two different semiconductor materials in series, heat can be absorbed and released at two ends of the galvanic couple respectively, so that the purpose of refrigeration can be achieved, and the cold and hot surfaces of positive and negative switching can be switched during electrification. The refrigerating technology is characterized by no moving parts, high reliability, limited space, high reliability requirement and no refrigerant pollution.

In a preferred embodiment, in the case where the first end 331 is a cold end, water vapor inside the sealed drawer 200 condenses at the first end 331 to form a water droplet, and the humidity inside the sealed drawer 200 decreases; in the case where the first end 331 is a hot end, moisture on the flow guide plate 324 is continuously evaporated by the first end 331, and the humidity inside the hermetic drawer 200 increases.

Specifically, the heat insulating frame 322 may be made of a poor conductor material for heat, for blocking and reducing a thermal bridge effect of the first and second end surfaces 331 and 332. For example, the heat insulating frame 322 may be made of EPS material. Polystyrene foam (EPS) is a light polymer. Polystyrene resin is added with foaming agent, and simultaneously heated for softening to generate gas, so that the foamed plastic with a hard closed-cell structure is formed.

The baffle 324 may be made of a hydrophilic and water-conducting material. In a specific embodiment, the baffle 324 may be "U-shaped" and the front and rear surfaces thereof are provided with circular or grid-shaped matrix windows 341 to dissipate and absorb heat from the first and second end surfaces 331 and 332 and promote absorption and diffusion of moisture in the baffle 324. In other embodiments, the baffle 324 may also be "L-shaped".

As shown in fig. 4, the module integration case 310 may include: the shell 311 and the cover 312, a cavity is defined inside the shell 311, and the cover 312 is connected with the shell 311 in a snap-fit manner. The humidity control module 320 is inserted into the cavity of the housing 311, and then the cover 312 is fastened, so that the housing 311 and the cover 312 are fastened together to form the complete humidity controller 300. Openings through which the electrode wires 333 extend may be provided above the heat insulating frame 322 and on the cover 312.

The bottom of the housing 311 is provided with a boss to support the humidity control module 320, and a water storage groove is formed in a gap between the boss and the bottom of the housing 311 to serve as a temporary storage of excessive moisture after the baffle 324 is saturated with water. It should be noted that, due to the perspective, neither the boss nor the reservoir is shown in the figures.

In a preferred embodiment, the refrigerator 100 may further include: a humidity sensor (not shown) disposed inside the sealed drawer 200 and configured to detect humidity inside the sealed drawer 200. The humidity controller 300 may specifically adjust the humidity according to the humidity detected by the humidity sensor. In addition, in other embodiments, the sealed drawer 200 may be configured as a cabin or compartment, etc.

The sealing drawer 200 can be drawn out or inserted inwards, and has good sealing performance with the drawer cover 210 when the sealing drawer 200 is inserted inwards to reset. The operation panel 211 is disposed on the upper surface of the drawer cover 210, and a user can set humidity requirements by one key or preset several humidity modes according to different storage requirements.

The sealing drawer 200 in this embodiment has a through hole 221 formed in a rear wall, and in some other embodiments, the sealing drawer may also be disposed on other side walls of the sealing drawer 200, including a bottom wall of the sealing drawer 200 and a bottom of the drawer cover 210. The shape of the through hole 221 is equal to the overall size of the humidity controller 300, and the humidity controller 300 is tightly embedded in the through hole 221 to ensure the sealing property. The humidity controller 300 has a first end 331 facing the interior of the drawer and in direct contact with the air in the drawer, and a second end 332 facing the exterior of the drawer.

That is to say, the semiconductor refrigeration piece 321 forms a cold end surface and a hot end surface when being powered on, and the cold and hot ends switched between the positive and negative electrodes also generate the basic characteristic of conversion correspondingly, and the working time and the conversion of the cold and hot ends of the semiconductor refrigeration piece 321 are controlled through logic setting in combination with the detection and signal feedback of the humidity sensor. When the humidity needs to be reduced, the first end surface 331 facing the inside of the sealed drawer 200 is switched to be a cold end, so that the water vapor contacting with the cold end is condensed and condensed; when the humidity needs to be raised, the first end surface 331 facing the inside of the sealing drawer 200 is switched to be a hot end, so that water in the flow deflector attached to the first end surface is heated and evaporated to enter air. Eventually the humidity inside the sealed drawer 200 reaches a set constant value to meet the optimal humidity requirements for storage of different items.

Fig. 6 is a schematic view of a humidity adjusting method of a refrigerator according to one embodiment of the present invention. The humidity adjusting method of the refrigerator may be performed using the refrigerator 100 of any of the above embodiments. As shown in fig. 6, the humidity adjusting method of the refrigerator sequentially performs the following steps:

step S602, acquiring target humidity set by a user;

step S604, detecting the actual humidity inside the sealed drawer 200;

step S606, determining the energizing direction of the semiconductor chilling plate 321 according to the actual humidity and the target humidity, so that the first end surface 331 realizes the conversion between the cold end surface and the hot end surface, and further adjusting the humidity in the sealed drawer 200.

In the above steps, the step of determining the energizing direction of the semiconductor cooling fins 321 according to the actual humidity and the target humidity in step S606 may specifically include: judging whether the actual humidity is less than the target humidity; if so, the direction of the current flow of the semiconductor cooling fins 321 is switched so that the first end surface 331 becomes a hot end surface, and the moisture on the baffle plate 324 is continuously evaporated by the first end surface 331, thereby increasing the humidity inside the sealed drawer 200. When the actual humidity is higher than the target humidity, the direction of the current applied to the semiconductor cooling fins 321 is switched so that the first end surface 331 becomes a cold end surface, and the water vapor inside the sealed drawer 200 condenses on the first end surface 331 to form water droplets, thereby lowering the humidity inside the sealed drawer 200.

In some optional embodiments, the refrigerator 100 may achieve a higher technical effect by further optimizing and configuring the above steps, and the following describes in detail the humidity adjusting method of the refrigerator of this embodiment in combination with a description of an optional execution flow of this embodiment, where this embodiment is merely an illustration of the execution flow, and in a specific implementation, an execution sequence and an operation condition of some steps may be modified according to specific implementation requirements. Fig. 7 is a detailed flowchart of a humidity adjusting method of a refrigerator according to one embodiment of the present invention. The humidity adjusting method of the refrigerator comprises the following steps:

step S702, acquiring target humidity set by a user;

step S704, detecting the actual humidity in the sealed drawer 200;

step S706, judging whether the actual humidity is smaller than the target humidity, if so, executing step S708, and if not, executing step S710;

step S708, switching the power direction of the semiconductor cooling plate 321 to make the first end 331 a hot end, so that the moisture on the flow guide plate 324 is continuously evaporated by the first end 331, and the humidity inside the sealed drawer 200 increases;

step S710, determining whether the actual humidity is greater than the target humidity, if so, performing step S712, otherwise, performing step S714;

step S712, switching the power direction of the semiconductor cooling plate 321 to make the first end surface 331 a cold end surface, condensing the water vapor inside the sealed drawer 200 on the first end surface 331 to form water droplets, and reducing the humidity inside the sealed drawer 200;

in step S714, it is determined that the actual humidity is equal to the target humidity.

In the above steps, step S706, it is determined whether the actual humidity is less than the target humidity, and if the result is no, that is, the actual humidity is greater than or equal to the target humidity, step S710 is performed, and if the result is no, that is, it is determined that the actual humidity is equal to the target humidity, step S714 is performed. After step S714, the process may return to step S704 to continue to detect the actual humidity, and then continue to perform a new round of humidity adjustment.

Several embodiments are described in detail below:

as for the moisture absorption process, it can be understood as a specific process of step S712, the anode and cathode of the humidity controller 300 are switched to be powered on, the first end 331 facing the inside of the drawer is a cold end, and the second end 332 facing the outside of the drawer is a hot end; at this time, the water vapor inside the sealed drawer 200 meets the condensation at the first end 331 to form water drops, and is continuously absorbed by the hydrophilic guide plate 324, so that the humidity inside the sealed drawer 200 is continuously reduced; after the set value is finally reached, the humidity controller 300 stops working under the feedback signal of the humidity sensor. When the humidity controller 300 continues to operate, the excessive condensed water absorbed by the hydrophilic diversion plate 324 on the first end 331 will accumulate in the water storage tank at the bottom of the housing 311, and then permeate to the surface of the second end 332 through capillary action, and is evaporated by the second end 332 and then emitted to the outside of the sealed drawer 200, thereby completing the transmission process of water vapor from the inside of the sealed drawer 200 to the outside.

Regarding the dehumidification process, it can be understood that in the specific process of step S708, the anode and cathode of the humidity controller 300 are switched to be powered on, the first end 331 facing the inside of the drawer is a hot end, and the second end 332 facing the outside of the drawer is a cold end; at this time, the moisture on the hydrophilic guide plate 324 is continuously evaporated by the first end 331, and the humidity in the sealed drawer 200 gradually rises; after the set value is finally reached, the humidity controller 300 stops working under the feedback signal of the humidity sensor. Similarly, when the humidity controller 300 continues to operate, the excess condensed water on the second end surface 332 outside the sealed drawer 200 will accumulate in the bottom water storage tank, permeate to the first end surface 331 inside the sealed drawer 200, be heated and evaporated, and be emitted to the inside air, thereby completing the transfer of water vapor from outside to inside.

Regarding the constant humidity control process, after a user sets a certain target humidity for the sealed drawer 200 through the operation panel 211, the humidity sensor in the sealed drawer 200 detects the real-time humidity in the sealed drawer 200 and continuously feeds back the humidity; if the real-time humidity is higher than the target humidity, the humidity controller 300 is in a moisture absorption working state through anode and cathode adjustment; if the real-time humidity is lower than the target humidity, the humidity controller 300 is in a 'moisture release' working state through anode and cathode adjustment; through the interaction of the above-mentioned "moisture absorption" and "moisture release", the set target humidity inside the sealed drawer 200 is maintained and is constant.

In addition, the refrigerator 100 may further include a compression refrigeration system to provide cooling energy to the storage space. It should be noted that the compression refrigeration system 140 provides different cooling capacities to the storage spaces, so that the temperatures in the storage spaces are different. Wherein the temperature in the refrigerated space is generally between 2 ℃ and 10 ℃, preferably between 4 ℃ and 7 ℃. The temperature range in the freezing space is typically between-22 ℃ and-14 ℃. The optimal storage temperatures of different types of articles are different, and thus the storage spaces suitable for storage are also different. For example, fruits and vegetables are suitable for storage in a refrigerated space or a fresh-keeping space, while meat is suitable for storage in a refrigerated space. Through all effectively adjusting temperature and humidity, fully provided storing demand.

The humidity adjusting method of the refrigerator of the embodiment is suitable for any type of refrigerator, can adjust and compensate the humidity in the sealed drawer 200, and can realize constancy; the situation that only a drying chamber or a humidity chamber with single function can be realized before is solved; the automatic circulation of moisture absorption and desorption is realized without the manual intervention of a user, and the use experience of the user is improved.

Further, in the humidity adjusting method of the refrigerator of the embodiment, when the first end surface 331 is a cold end surface, water vapor inside the sealed drawer 200 is condensed on the first end surface 331 to form water droplets, and the humidity inside the sealed drawer 200 is reduced; in the case where the first end 331 is a hot end, moisture on the baffle 324 is continuously evaporated by the first end 331, and the humidity inside the sealed drawer 200 increases. Humidity controller 300 utilizes the semiconductor refrigeration characteristic, realizes adjusting sealed drawer 200 inside humidity through semiconductor refrigeration piece 321, avoids the wind circulation to lead to sealed drawer 200 inside to receive the influence of outside peculiar smell, can also avoid traditional humidification equipment to cause the rotten condition of too much moisture attached to make on food, effectively promotes the storage effect of article.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims (10)

1. A humidity adjusting method of a refrigerator, wherein the refrigerator comprises: a box body, wherein a storage space is limited in the box body; sealed drawer, set up in the storing space, include: the drawer comprises a drawer cover plate and a drawer body arranged below the drawer cover plate; and the semiconductor refrigeration piece is provided with a first end face facing the inside of the sealed drawer and a second end face facing the outside of the sealed drawer, and the adjusting method comprises the following steps:

acquiring target humidity set by a user;

detecting the actual humidity within the sealed drawer; and

and determining the electrifying direction of the semiconductor refrigerating sheet according to the actual humidity and the target humidity so as to realize the conversion between the cold end surface and the hot end surface of the first end surface and further regulate the humidity in the sealed drawer.

2. The humidity adjusting method of a refrigerator according to claim 1,

the rear wall of the drawer body is provided with a through hole,

the refrigerator further includes: humidity controller inlays locates through-hole department, and it includes: the module integrated shell and the humidity control module, wherein a cavity is limited in the module integrated shell, and the humidity control module is inserted in the cavity.

3. The humidity adjusting method of a refrigerator according to claim 2,

the humidity control module includes: the semiconductor refrigerating sheet, the heat insulation frame, the two heat conduction metal plates and the guide plate,

wherein the semiconductor refrigerating sheet is embedded in the heat insulation frame,

two heat-conducting metal plates respectively attached to the first end face and the second end face, and the area of each heat-conducting metal plate covers the heat-insulating frame,

the guide plate is attached to and wraps the two heat conduction metal plates.

4. The humidity adjustment method of the refrigerator according to claim 3, wherein the step of determining the energizing direction of the semiconductor chilling plates according to the actual humidity and the target humidity comprises:

judging whether the actual humidity is smaller than the target humidity or not;

if so, switching the electrifying direction of the semiconductor refrigerating sheet to enable the first end face to become a hot end face, continuously evaporating the moisture on the guide plate by the first end face, and increasing the humidity in the sealed drawer.

5. The humidity adjusting method of a refrigerator according to claim 4,

and under the condition that the actual humidity is greater than the target humidity, switching the electrifying direction of the semiconductor refrigeration sheet to enable the first end face to become a cold end face, condensing water vapor inside the sealed drawer on the first end face to form water drops, and reducing the humidity inside the sealed drawer.

6. The humidity adjusting method of a refrigerator according to claim 1,

and an operation panel is arranged on the upper surface of the drawer cover plate, and the target humidity is obtained through the operation panel.

7. The humidity adjusting method of a refrigerator according to claim 1,

the refrigerator further includes: and the humidity sensor is arranged in the sealed drawer and is used for detecting the actual humidity.

8. The humidity adjusting method of a refrigerator according to claim 3,

the top end of the semiconductor refrigeration piece is provided with two electrode wires to be connected with a direct current power supply, and the first end face and the second end face are enabled to realize conversion between a cold end face and a hot end face by switching the electrifying direction.

9. The humidity adjusting method of a refrigerator according to claim 3,

the heat insulation frame is made of a poor thermal conductor material and used for blocking and reducing the thermal bridge effect of the first end face and the second end face.

10. The humidity adjusting method of a refrigerator according to claim 3,

the deflector is made of a hydrophilic and water-conducting material,

the flow guide plate is U-shaped, and circular or grid-shaped matrix windowing is arranged on the front face and the rear face of the flow guide plate, so that heat of the first end face and the second end face is dissipated and absorbed, and moisture is promoted to be absorbed and diffused by the flow guide plate.

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