WO2019105306A1

WO2019105306A1 - Refrigeration and freezing device

Info

Publication number: WO2019105306A1
Application number: PCT/CN2018/117316
Authority: WO
Inventors: 刘浩泉; 姜波; 杨春; 王晶
Original assignee: 青岛海尔股份有限公司
Priority date: 2017-11-30
Filing date: 2018-11-23
Publication date: 2019-06-06
Also published as: CN109855348B; CN109855348A

Abstract

A refrigeration and freezing device, comprising a storage drawer (100), an electrolytic oxygen removal assembly (200), a touch sensing device (500) and an electric air valve (300). The electrolytic oxygen removal assembly (200) is used for consuming oxygen in a storage space so that nitrogen-rich oxygen-deficient air is obtained in the space so as to benefit a gas atmosphere for food preservation. The intensity of the aerobic respiration of food, particularly fruits and vegetables, is decreased by means of decreasing the content of oxygen in the storage space, simultaneously ensuring basic respiratory action and preventing the anaerobic respiration of the food, thereby achieving the goal of long-term preservation of the food. When the touch sensing device (500) detects that a user is about to open the storage drawer (100), the electric air valve (300) opens a through hole on the drawer (100) so that the interior and exterior of the storage space communicate, the pressure difference between the interior and exterior of the drawer being eliminated, and thus the problem in which a drawer is difficult to open due to the mounting of the electrolytic oxygen removal assembly (200) is solved; a user may open the storage drawer (100) with less effort, and the usage experience of the user is thus improved.

Description

Refrigerated freezer

Technical field

The invention relates to the field of refrigeration and freezing, and in particular to a refrigerating and freezing device.

Background technique

The modified atmosphere preservation technology generally refers to a technique for prolonging the storage life of a food by adjusting the gas atmosphere (gas composition ratio or gas pressure) of the enclosed space in which the storage is located, and the basic principle is: in a certain closed space. A gas atmosphere different from the normal air component is obtained by various adjustment methods to suppress physiological and biochemical processes and microbial activities leading to spoilage of the stored matter (usually the foodstuff). In particular, in the present application, the modified atmosphere preservation will be specifically directed to a modified atmosphere preservation technique that adjusts the proportion of gas components.

In some existing refrigerators, an oxygen-reducing device is arranged in a closed space (drawer or compartment) inside, and the oxygen-reducing device can reduce the oxygen content of the closed space, thereby achieving the purpose of air-conditioning preservation. However, due to the provision of an oxygen-reducing device inside these refrigerators, the oxygen concentration inside the enclosed space is gradually lowered while the air pressure is lowered. This situation is likely to cause a pressure difference inside and outside the enclosed space, which may cause difficulty for the user to open.

Summary of the invention

In view of the above problems, the present invention has been made in order to provide a refrigerating and freezing apparatus that overcomes the above problems or at least partially solves the above problems.

It is an object of the present invention to provide a gas atmosphere rich in nitrogen and oxygen to promote food preservation.

Another object of the invention is to facilitate the user to open the storage drawer.

In one aspect, the present invention provides a refrigerating and freezing apparatus comprising: a casing in which a storage compartment of a refrigerating and freezing apparatus is formed; a storage drawer disposed inside the storage compartment, the inside of which forms a storage space, comprising: a cylindrical body, the surface of which is provided with a through hole; and a drawing portion which can be pushed into the inside of the cylinder or extracted from the inside of the cylinder to open or close the storage space; the touch sensing device is disposed at the front end of the drawing portion The surface is configured to generate a trigger signal when the user contacts the front end surface of the drawing portion; the electric air valve is openably and closably disposed on the through hole, electrically connected to the touch sensing device, and configured to receive the trigger signal Opening the through hole to allow the storage space to communicate with the external ambient air.

Optionally, the electric air valve comprises: a valve body fixed in the through hole, the inside of which forms a gas passage connecting the storage space and the external ambient air; the valve core is disposed in the gas passage and extends along the extending direction of the gas passage The bidirectional movement; and the motor, the end of the connecting valve core, is configured to, after receiving the trigger signal, drive the spool to move a predetermined distance in a direction away from the cylinder to open the gas passage.

Optionally, the motor is further configured to wait for a preset time after driving the valve spool to open the gas passage, and then drive the spool to move a predetermined distance in a direction close to the cylinder to reclose the gas passage.

Optionally, the through hole is disposed on the back surface of the cylinder, and the gas passage extends in the front-rear direction of the refrigerating and freezing device.

Optionally, the refrigerating and freezing device further includes: a liner disposed on the inner side of the casing; wherein the motor is fixedly disposed on the inner casing behind the cylinder.

Optionally, the front end surface of the drawer is provided with a groove for the user to grasp, and the touch sensing device is disposed in the groove.

Optionally, the refrigerating and freezing device further includes: an electric de-oxygen module; wherein an upper surface of the cylinder is provided with an opening, and the electric de-energizing component is detachably disposed at the opening, and is configured to consume the interior of the storage space by the electrolytic reaction oxygen.

Optionally, the electric de-oxygenation module further comprises: an anode plate configured to electrolyze water vapor to generate hydrogen ions and oxygen; a cathode plate configured to react with hydrogen ions and oxygen to generate water; and clamped to the cathode plate and the anode plate The proton exchange membrane is configured to transport hydrogen ions from one side of the anode plate to the side of the cathode plate; wherein one side of the cathode plate facing away from the proton exchange membrane is at least partially exposed to the interior of the storage space, and the anode plate faces away from the proton exchange membrane One side is at least partially exposed to the outside of the storage space.

Optionally, the electric de-oxygen assembly further comprises: a fan disposed on a side of the anode plate facing away from the proton exchange membrane to blow water vapor outside the storage drawer toward the anode plate.

Optionally, the electrical de-oxygenation assembly further comprises: two diffusion layers disposed between the anode plate and the proton exchange membrane and between the cathode plate and the proton exchange membrane for conducting and allowing water vapor to diffuse.

The present invention provides a refrigerating and freezing apparatus comprising: a storage drawer, an electric deaeration component, a touch sensing device, and an electric air valve. The electric de-oxygen module is used to consume oxygen in the air in the storage space, thereby obtaining a gas atmosphere rich in nitrogen and oxygen in the space to facilitate food preservation. The gas atmosphere reduces the oxygen content of the food (especially fruits and vegetables) by reducing the oxygen content in the storage space, while ensuring the basic respiration and preventing the food from performing anaerobic respiration, thereby achieving the purpose of long-term preservation of the food. Since the battery for supplying power to the anode plate and the cathode plate can be disposed in the foam layer of the refrigerator of the refrigerating and freezing device, the electric de-oxygen module is disposed on the top surface of the storage drawer to facilitate power supply from the box to the electric de-oxygen component. It is also convenient for the user to install and remove the electric de-oxygen component. The electric de-oxygen module is placed at the top of the storage drawer to be in full contact with the air in the refrigerating compartment. After the water vapor near the de-energizing component is consumed, the water vapor in other locations can be quickly replenished to maintain the reaction quickly. Therefore, such an arrangement can also improve the working efficiency of the electric de-oxygen module.

Further, the refrigerating and freezing apparatus of the present invention further includes: a touch sensing device and an electric air valve. The consumption of oxygen in the storage space during operation of the oxygen-removing oxygen module results in a decrease in the internal pressure of the storage space. Therefore, the storage drawer equipped with the electric de-energizing component is more likely to generate a pressure difference inside and outside the storage space, thereby making it difficult for the user to open the drawer. In the refrigerating and freezing device of the embodiment, when the touch sensing device detects that the user is about to open the storage drawer, the electric air valve opens the through hole in the drawer, so that the storage space is connected inside and outside, and the pressure difference between the inside and the outside of the drawer is eliminated, thereby solving the installation due to the installation. The problem that the drawer is difficult to open due to the electric deactivating of the oxygen component. It is convenient for the user to open the storage drawer more effortlessly and improve the user experience.

Further, the components of the electric de-oxygen module are integrated into the accommodating case. When the user needs to use the deaeration function of the storage drawer, the accommodating case is inserted into the predetermined opening of the cylinder, the battery power is turned on, and the oxygen is removed. The assembly begins to electrify oxygen. If the user does not need the oxygen removal function, the entire housing box can be pulled out. The storage drawer of the invention is more convenient to disassemble and install the electric de-oxygen component, thereby improving the user experience.

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

DRAWINGS

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

1 is a schematic view of a refrigerating and freezing apparatus according to an embodiment of the present invention;

Figure 2 is a partial side cross-sectional view of a refrigerating and freezing apparatus in accordance with one embodiment of the present invention;

3 is a schematic view of a storage drawer of a refrigerating and freezing apparatus according to an embodiment of the present invention;

4 is an exploded perspective view of a storage drawer of a refrigerating and freezing apparatus according to an embodiment of the present invention;

Figure 5 is a rear elevational view of the storage drawer of the refrigerating and freezing apparatus in accordance with one embodiment of the present invention;

Figure 6 is a partial schematic view showing the rear side of the storage drawer of the refrigerating and freezing apparatus according to an embodiment of the present invention;

Figure 7 is a schematic illustration of an electrical deaeration module of a refrigerated freezer in accordance with one embodiment of the present invention;

Figure 8 is an exploded perspective view of an electric deaeration module of a refrigerating and freezing apparatus according to an embodiment of the present invention;

9 is a schematic view of a housing case of an electric deaeration module of a refrigerating and freezing apparatus according to an embodiment of the present invention;

Figure 10 is a partial top plan view of a storage drawer of a refrigerating and freezing apparatus in accordance with one embodiment of the present invention.

Detailed ways

The present invention provides a refrigerating and freezing apparatus which may be a refrigerator, a freezer or the like. In the embodiment, the refrigerating and freezing device is an air-cooled refrigerator. As shown in FIG. 1 and FIG. 2 , the refrigerator includes a case, a storage drawer 100 , a touch sensing device 500 , and an electric air valve 300 . A storage compartment of the refrigerating and freezing device is formed inside the casing. The storage compartment of the refrigerator includes a refrigerating compartment and a freezing compartment below the refrigerating compartment. The storage drawer 100 is composed of a cylinder 111 and a drawer 112 which is disposed at the bottom of the refrigerating compartment of the refrigerator. The above refrigerating and freezing apparatus further includes a liner 410, and the inner tank 410 is disposed inside the casing. A plurality of pairs of ribs are disposed on both inner sides of the refrigerating compartment inner chamber 410, and a pair of ribs located at the bottom of the refrigerating compartment are used to define a mounting position of the drawer. A through hole is provided in the surface of the cylinder 111 for mounting the electric air valve 300. The drawer 112 can be pushed into the interior of the barrel 111 or drawn inside the barrel 111 to open or close the storage space.

The touch sensing device 500 is disposed on the front end surface of the drawing portion, and is disposed such that when the front end surface of the drawing portion is contacted, for example, when the user touches the front end surface of the drawing portion, a trigger signal is generated. In the present embodiment, the touch sensing device 500 may be a pressure sensor that determines whether the user grips the drawing portion by detecting a pressure change of the front end surface of the drawing portion 112. The front end surface of the drawing portion 112 is further provided with a groove for the user to grasp, and the touch sensing device 500 is disposed in the groove. In other embodiments, the touch sensing device 500 described above may also be any one of an electrostatic touch switch, a temperature sensor, and the like.

The electric air valve 300 is openably and closably disposed on the through hole, and is configured to open the through hole when the trigger signal is received, so that the storage space is in air communication with the external environment.

The electric air valve 300 further includes a valve body 310, a spool 320, and a motor 330. The valve body 310 is fixed in the through hole. In the present embodiment, the valve body 310 can be glued to the edge of the through hole. The cross-sectional size of the valve body 310 is the same as the diameter of the through hole to prevent gas leakage inside the storage space, and a gas passage connecting the storage space and the external ambient air is formed inside the valve body 310. The spool 320 is disposed in the gas passage and can move in both directions along the extending direction of the gas passage. The length of the spool 320 is greater than the length of the gas passage to facilitate movement of the spool 320 within the gas passage. The motor 330 is connected to the end of the spool 320 at the outer end of the storage space. In the present embodiment, the motor 330 is a stepping motor 330 capable of driving the spool 320 to move bidirectionally within the gas passage. The motor 330 is configured to, when receiving the trigger signal, drive the spool 320 to move a predetermined distance in a direction away from the barrel 111 such that the spool 320 exits the valve body 310 to open the gas passage. The motor 330 is further configured to wait for a preset time after driving the spool 320 to open the gas passage, and then drive the spool 320 to move a predetermined distance in a direction toward the barrel 111 to reclose the gas passage. In this embodiment, the preset distance may be 2-3 mm, and the preset time may be 1-2 s.

In the present embodiment, as shown in FIG. 5, the through hole is provided on the back surface of the cylinder, and the gas passage extends in the front-rear direction of the refrigerating and freezing apparatus. The motor 330 is fixedly disposed on the inner tank 410 at the rear of the cylinder, and is located in a space formed by the inner casing 410 and the casing. The motor 330 described above may be integrated into a casing, and the casing is integrally fixed to the back surface of the casing 410. A circular hole is provided in the inner casing to allow one end of the spool 320 to pass through and be connected to the motor 330 on the other side.

The working process of the electric air valve 300 of the present embodiment is specifically: when the user desires to open the storage drawer 100, the groove of the front end surface of the drawing portion 112 is first gripped. The touch sensing device 500 inside the groove senses a user contact, generates a trigger signal, and transmits a trigger signal to the electric air valve 300. After receiving the trigger signal, the electric air valve 300 drives the spool 320 to move rearward to expose the gas passage. The storage space is in communication with the outside air, and the air pressure inside and outside the storage drawer 100 will remain the same. In the refrigerating and freezing apparatus of the embodiment, the storage drawer 100 is in a closed state for a long time, and some changes are made to the gas components in the storage space. For example, aerobic respiration of fruits and vegetables may cause a decrease in the oxygen concentration inside the space. Therefore, the internal air pressure in the storage space may be lower than the external air pressure, causing a difference in internal and external pressure between the storage drawers, thereby causing resistance when the user opens the storage drawer 100. The refrigerating and freezing device of the embodiment, when detecting that the user is about to open the storage drawer, controls the electric air valve 300 to communicate the inside and outside of the storage space, thereby eliminating the pressure difference between the inside and the outside of the drawer, so that the user can open the storage drawer 100 more labor-savingly.

In the present embodiment, as shown in FIGS. 3 and 4, the refrigerating and freezing apparatus further includes: an electric de-oxygen module 200. The top surface of the cylinder 111 is provided with an opening. The electric deoxidizing oxygen module 200 is formed at the opening, and is configured to consume oxygen inside the atmosphere of the fresh air conditioning space by the electrolytic reaction.

In the present embodiment, the opening is a rectangular opening for mounting the electrical de-oxygen module 200. The size of the electrical de-energizing assembly 200 is adapted to the size of the opening so that it can completely close the opening, preventing gas exchange with the outside of the interior of the storage space.

As shown in FIG. 8, the electric de-oxygen module 200 includes a battery, an anode plate 220, a cathode plate 230, and a proton exchange membrane 210 sandwiched between the cathode plate 230 and the anode plate 220. The battery may be disposed on the storage drawer 100 or may be disposed outside the storage drawer 100. One side of the cathode plate 230 facing away from the proton exchange membrane 210 is at least partially exposed to the interior of the storage space, and one side of the anode plate 220 facing away from the proton exchange membrane 210 is at least partially exposed to the exterior of the storage space. That is, the electric de-oxygen module 200 has at least three layers of structure, from top to bottom, the anode plate 220, the proton exchange membrane 210 and the cathode plate 230, the anode plate 220 faces the outside of the storage space, and the cathode plate 220 faces the storage space. internal. Each layer structure is parallel to the plane of the opening, and each layer has the same size as the opening.

Preferably, the cathode plate 230 and the anode plate 220 are carbon electrode plates or platinum electrode plates, and a carbon electrode having a platinum plating layer on the surface is generally used. The edges of the anode plate 220 and the cathode plate 230 are each provided with a terminal, which is an anode plate terminal 221 and a cathode plate terminal 231, respectively, for connecting the anode and the cathode of the battery, respectively. The battery supplies electrons to the cathode plate 230 while the anode plate 220 provides electrons to the battery anode. The anode plate 220 is configured to electrolyze water vapor to produce protons and oxygen. The proton exchange membrane 210 is configured to transport protons from one side of the anode plate 220 to the side of the cathode plate 230. The cathode plate 230 is configured to react with oxygen to generate water. Among them, the chemical reaction formulas of the anode plate and the cathode plate are respectively:

Anode plate: 2H ₂ O→O ₂ +4H ⁺ +4e ^-

Cathode plate: O ₂ +4H ⁺ +4e ^- →2H ₂ O

Specifically, the anode of the battery is charged to the anode plate 220, and the side of the anode plate 220 electrolyzes water vapor outside the storage drawer 100 to generate hydrogen ions and oxygen, and the oxygen is discharged to the outside of the storage space, and the hydrogen ions enter the proton exchange membrane 210. The cathode of the battery charges the cathode plate 230 to supply electrons to the cathode plate 230, and the hydrogen ions supplied from the proton exchange membrane 210 react with the oxygen inside the storage space to generate water, thereby consuming oxygen inside the storage space. .

The proton exchange membrane 210 includes a proton conductive polymer, a porous membrane, and at least one active ingredient. At least one active ingredient is dispersed in the proton conductive polymer, and the proton conductive polymer is taken in and filled in the pores of the porous membrane. The proton exchange membrane 210 functions to allow hydrogen ions to pass therethrough to transport the hydrogen ions generated by the reaction of the anode plate 220 to the cathode plate 230 for use by the cathode plate 230 for reaction.

Preferably, the proton conducting polymer is polystyrenesulfonic acid (PSSA) or carboxymethyl cellulose (CMC). The porous membrane is polytetrafluoroethylene (PTFE) or fluorinated ethylene propylene (FEP) or polyolefin film or polyperfluoroethylene propylene or glass fiber or ceramic fiber or polymer fiber; the active ingredient is silica gel suitable for electroosmotic flow, The concentration of dispersed silica gel does not exceed 5% of the mass of the proton exchange membrane.

In the embodiment, the electric de-oxygen module 200 further includes: two elastic plates 240 disposed on the outer sides of the anode plate 220 and the cathode plate 230 for tightening the anode plate 220, the proton exchange membrane 210, and the cathode plate. 230. The electric de-oxygen assembly 200 further includes a plurality of fastening screws. The positions of the two elastic plates 240, the anode plate 220, the proton exchange membrane 210 and the cathode plate 230 near the edge are respectively provided with a plurality of screw holes 201, each fastening screw The screw holes 201 in the same position of the plurality of components are sequentially passed through to fix and hold the multilayer components. The two elastic plates 240 have a plurality of elastic protrusions 284 on the sides facing the cathode plate 230 and the anode plate 220, and the positions of the elastic protrusions 284 on the two elastic plates 240 correspond to each other, that is, each elastic protrusion Each of the 284 can be mated with an elastic projection 284 on the other plate to join the extruded anode plate 220 and the cathode plate 230 for further tightening the proton exchange membrane 210. The middle portion of each of the elastic plates 240 is hollowed out or a plurality of air holes are uniformly formed to allow gas to pass therethrough.

In the present embodiment, the electric de-oxygen assembly 200 may further include: a diffusion layer 270, an activated carbon filter screen, and one or more gaskets 260. The diffusion layer 270 is located between the anode plate 220 and the proton exchange membrane 210 and between the cathode plate 230 and the proton exchange membrane 210. The diffusion layer 270 is made of a platinum-plated titanium mesh, which functions to facilitate conduction and allow water vapor to diffuse. An activated carbon filter screen is disposed on the side of the anode facing away from the proton exchange membrane 210 for purifying the gas entering the anode plate 220. At least one washer 260 may be located between the above-mentioned multilayer structures, and each of the washers 260 is an oblong thin ring having the same outer ring size as the cathode plate 230 and the anode plate 220. Each of the washers 260 is made of an elastic material to cushion the pressing force between adjacent layers.

The electric de-oxygen assembly 200 further includes a fan 250. The fan 250 described above may be a micro axial fan 250. The fan 250 is disposed on a side of the anode plate 220 facing away from the proton exchange membrane 210, and its rotating shaft is perpendicular to the anode plate 220 for blowing water vapor outside the storage drawer 100 toward the anode. The reactant of the anode plate of the electric deoxidizing module 200 of the present embodiment is water vapor. Therefore, the anode plate needs to continuously replenish moisture so that the electrolysis reaction can be continued. When the electric deactivating oxygen module 200 is turned on, the battery supplies power to the cathode plate 230 and the anode plate 220, respectively, and the fan 250 is turned on. When the fan 250 blows air to the anode plate 220, the water vapor in the air is blown together to the anode plate 220. To provide reactants to the anode plate 220. Since the internal temperature of the refrigerating and freezing apparatus is generally low, the storage compartment in the refrigerating and freezing apparatus has a relatively humid gas atmosphere, and the air contains a large amount of water vapor. Therefore, the indoor air in the storage compartment can supply sufficient reactants to the anode plate 220 without separately providing a water source or water delivery device for the electrical de-oxygen assembly 200.

In the present embodiment, the multilayer structure of the cathode plate 230, the anode plate 220, and the proton exchange membrane 210 is integrated into a housing case 280 to facilitate the overall installation or removal of the electric deaeration module 200. The accommodating case 280 described above may be completely embedded in the wall of the storage drawer 100 or partially embedded.

As shown in FIG. 9, the X direction is defined as the longitudinal direction of the housing case 280, Y is the width direction, and Z is the height direction. The mounting box 280 is provided with a mounting opening for loading various components in the electric de-oxygen assembly 200. The mounting opening is rectangular and has a size corresponding to the size of the cathode plate 230 and the anode plate 220. The bottom surface of the accommodating case 280 is hollowed out to allow gas to pass therethrough. In the present embodiment, the bottom surface of the accommodating case 280 is also fixed with a cross holder 286 for supporting various components in the electric de-oxygen assembly 200.

One of the side walls of the housing case 280 is also provided with two through holes 285 to allow the anode plate terminal 221 and the cathode plate terminal 231 to extend. After the anode plate terminal 221 or the cathode plate terminal 231 protrudes from the accommodating case 280, it is connected to the anode and cathode of the external battery through a line connection.

The edge of the mounting opening also has a turn 282 that extends toward the exterior of the receiving case 280 for overlapping the receiving case 280 at the edge of the opening. When the accommodating case 280 is overlapped at the edge of the opening, the burr 282 can seal the gap between the barrel and the accommodating case 280, preventing gas leakage inside the storage space. The flange 282 has at least two spaced apart notches 283, wherein the two notches 283 are positioned opposite the anode plate terminal 221 and the cathode plate terminal 231 to reveal the two terminals for convenient line connection, while the gap 283 is further The user can conveniently take the accommodating case 280 during the process of disassembling the electric detaching oxygen assembly 200.

As shown in FIG. 10, a plurality of claws 113 are disposed at the opening edge of the cylinder 111. The outer side of the accommodating case 280 is correspondingly provided with a plurality of protrusions 284, and the claws 113 catch the protrusions 284 to realize the accommodating case 280. installation. In the present embodiment, the outer surface of each side wall of the accommodating case 280 is provided with two protrusions 284, and the two protrusions 284 are spaced apart along the length or width direction of the accommodating case 280, and the two protrusions 284 are The same height position of the housing 280 is accommodated. Two claws 113 are disposed on each edge of the opening of the cylinder 111. The two claws 113 are vertically disposed upward, and the ends thereof are used to clamp the protrusions 284 on the side wall of the accommodating case 280 for fixed accommodation. Box 280.

When assembling the electric de-oxygen module 200, components such as the cathode plate 230, the anode plate 220, the proton exchange membrane 210, the gasket 260, the elastic plate 240, and the diffusion layer 270 are arranged in accordance with the above-described positional relationship, and a multilayer structure is formed. Then, the multilayer structure is entirely placed inside the accommodating case 280. The layer arrangement direction of the multilayer structure coincides with the height direction of the housing case 280. In the present embodiment, the multilayer structure in the accommodating case 280 is, from top to bottom, a fan 250, an elastic plate 240, a gasket 260, an anode plate 220, a gasket 260, a diffusion layer 270, a proton exchange membrane 210, and a diffusion layer 270. , a gasket 260, a cathode plate 230, a gasket 260, and an elastic plate 240. When the electric de-oxygen module 200 is installed, the assembled electric de-oxygen module 200 is integrally inserted into the opening of the cylinder 111, and when the flange of the accommodating case 280 abuts against the edge of the opening, the plurality of claws 113 just catch the accommodating case The protrusion 284 on the side wall of the 280, so that the receiving box 280 is fixed, and the electrical de-oxygen assembly 200 is installed. If the user does not need the oxygen scavenging function of the storage drawer 100, the accommodating case 280 can be taken out as a whole.

The storage drawer 100 of the present embodiment includes an electric de-oxygen module 200. The electric de-oxygen module 200 is used to consume oxygen in the air in the storage space, thereby obtaining a gas atmosphere rich in nitrogen and oxygen in the space to facilitate food preservation. The gas atmosphere reduces the oxygen content of the food (especially fruits and vegetables) by reducing the oxygen content in the storage space, while ensuring the basic respiration and preventing the food from performing anaerobic respiration, thereby achieving the purpose of long-term preservation of the food.

The electric de-oxygen module 200 is placed in the upper part of the drawer, and the battery for supplying power to the anode plate 220 and the cathode plate 230 can be disposed in the foam layer of the casing, thereby facilitating power supply from the casing to the electric de-oxygen module 200, and facilitating installation by the user. Disassembled. Since the drawer is disposed at the bottom of the refrigerating compartment, the electric de-oxygen module 200 is disposed at the top of the drawer to be in full contact with the air in the refrigerating compartment, and the air circulation of the air-cooled refrigerator is faster after the water vapor in the vicinity of the electric de-energizing component is consumed. Water vapor in other locations can be quickly replenished to keep the reaction fast. Therefore, providing the electric de-oxygen module 200 on the top of the drawer can improve the working efficiency of the electric de-oxygen module 200.

Since the oxygen in the storage space is consumed when the electric deaeration module 200 is operated, the internal pressure of the storage space is gradually lowered. Therefore, the storage drawer 100 to which the electric de-oxygen module 200 is mounted is more likely to generate a pressure difference inside and outside the storage space, which makes it difficult for the user to open the drawer. In the refrigerating and freezing apparatus of the embodiment, when the touch sensing device 500 detects that the user is about to open the storage pumping, 100, the electric air valve 300 opens the through hole in the drawer, so that the storage space is connected inside and outside, and the pressure difference between the inside and the outside of the drawer is eliminated. The problem that the drawer is difficult to open due to the installation of the electric de-oxygen component is solved. It is convenient for the user to open the storage drawer 100 more labor-saving, thereby improving the user experience.

It should be understood by those skilled in the art that "upper", "lower", "left", "right", "front", "rear", etc. are referred to in the embodiments of the present invention unless otherwise specified. The terminology or positional relationship is based on the actual use state of the refrigerating and freezing device. These terms are only for the convenience of description and understanding of the technical solutions of the present invention, and do not indicate or imply that the device or component referred to must have a specific The orientation is therefore not to be construed as limiting the invention.

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

Claims

A refrigerating and freezing device comprising:

a tank having an interior forming a storage compartment of the refrigerating and freezing device;

a storage drawer disposed inside the storage compartment, the interior of which forms a storage space, comprising:

a cylindrical body having a through hole provided on a surface thereof; and

a drawer that can be pushed into or withdrawn from the interior of the barrel to open or close the storage space;

a touch sensing device disposed on a front end surface of the drawing portion and configured to generate a trigger signal when the front end surface of the drawing portion is contacted;

An electric air valve is openably and closably disposed on the through hole, electrically connected to the touch sensing device, and configured to open the through hole after receiving the trigger signal, so that the storage space It is in air communication with the outside environment.
The refrigerating and freezing apparatus according to claim 1, wherein said electric air valve comprises:

a valve body fixed in the through hole, the inside of which forms a gas passage connecting the storage space and the external ambient air;

a spool disposed in the gas passage and movable in both directions along an extending direction of the gas passage; and

And a motor coupled to the end of the spool, configured to, when receiving the trigger signal, drive the spool to move a predetermined distance in a direction away from the barrel to open the gas passage.
A refrigerating and freezing apparatus according to claim 2, wherein

The motor is further configured to wait for a preset time after driving the valve core to open the gas passage, and then drive the spool to move the preset distance in a direction close to the cylinder to reclose the Said gas channel.
A refrigerating and freezing apparatus according to claim 3, wherein

The through hole is disposed at a rear surface of the cylindrical body, and the gas passage extends in a front-rear direction of the refrigerating and freezing device.
The refrigerating and freezing apparatus according to claim 4, further comprising:

a liner disposed inside the casing; wherein

The motor is fixedly disposed on the inner tank behind the cylinder.
The refrigerating and freezing apparatus according to claim 1, wherein

The front end surface of the drawing portion is provided with a groove, and the touch sensing device is disposed in the groove.
The refrigerating and freezing apparatus according to any one of claims 1 to 6, further comprising:

Electrical de-oxygenation component;

An opening is disposed on a top surface of the cylinder, and the electric de-oxygen assembly is detachably disposed at the opening, and is configured to consume oxygen inside the storage space by an electrolytic reaction.
The refrigerator-freezer according to claim 7, wherein the electric de-oxygenation module further comprises:

An anode plate configured to electrolyze water vapor to generate hydrogen ions and oxygen;

a cathode plate configured to react with hydrogen ions and oxygen to form water;

a proton exchange membrane sandwiched between the cathode plate and the anode plate, configured to transport hydrogen ions from one side of the anode plate to one side of the cathode plate;

A side of the cathode plate facing away from the proton exchange membrane is at least partially exposed to the interior of the storage space, and an anode plate facing away from the side of the proton exchange membrane is at least partially exposed to the exterior of the storage space.
The refrigerator-freezer according to claim 8, wherein the electric de-oxygenation module further comprises:

A fan is disposed on a side of the anode plate facing away from the proton exchange membrane to blow water vapor outside the storage drawer toward the anode plate.
The refrigerator-freezer according to claim 9, wherein the electric de-oxygenation module further comprises:

Two diffusion layers are disposed between the anode plate and the proton exchange membrane and between the cathode plate and the proton exchange membrane for conducting electricity and allowing water vapor to diffuse.