Refrigerator oxygen control drawer

Abstract

A compartment with an opening in the front side is arranged in the refrigerator, an oxygen control assembly is arranged in the space on the rear side of the compartment, and a drawer which can be pushed and pulled back and forth is arranged in the space on the front side of the compartment. The oxygen control assembly comprises a shell, an opening is formed in the bottom of the shell, a water-blocking breathable carbon film plate is installed at the position of the opening, a cavity is defined between the shell and the water-blocking breathable carbon film plate, a metal net plate is installed in the cavity, the metal net plate and the water-blocking breathable carbon film plate are arranged in a spaced mode, electrolyte is contained in the cavity, and the water-blocking breathable carbon film plate is electrically connected with the negative electrode of the direct-current power source. The metal net plate is electrically connected with the positive electrode of the direct-current power source, a pressure release valve communicated with the cavity is arranged on the top wall of the shell, and a pressure release opening of the pressure release valve is communicated with the outside of the chamber. Oxygen in the air in the compartment is separated through electrolytic reaction, so that the oxygen content of the storage space is reduced, and the freshness retaining property of food is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerators, and in particular to an oxygen-controlled drawer of a refrigerator. Background Art

[0002] Refrigerators are used to refrigerate or freeze food and are commonly used in daily life. With the advancement of technology and the improvement of living standards, users have higher and higher requirements for the freshness-keeping performance of refrigerators. Controlled atmosphere preservation technology generally refers to the technology of extending the storage life of food by adjusting the gas atmosphere (gas composition ratio) of the closed space where the stored goods are located. Its basic principle is: in a certain closed space, a gas atmosphere different from the normal air composition is obtained through various adjustment methods to inhibit the physiological and biochemical processes and microbial activities that cause the stored goods to spoil.

[0003] At present, most refrigerator atmosphere control technologies on the market adopt a nitrogen-rich, oxygen-poor fresh-keeping gas atmosphere, that is, the nitrogen content exceeds the nitrogen content in normal air, and the oxygen content is lower than the oxygen content in normal air. The general method is to supplement nitrogen through a pressure pump, but it will produce a lot of noise, and the modules formed by this technology are numerous and difficult to install and the cost is extremely high.

[0004] In view of this, it is necessary to improve the existing technology. Utility Model Content

[0005] The purpose of the utility model is to provide an oxygen-controlled drawer for a refrigerator, aiming to solve at least one of the technical problems existing in the above-mentioned prior art. To achieve the above-mentioned purpose, the technical solution adopted is as follows:

[0006] A refrigerator oxygen control drawer, wherein a compartment with a front opening is provided inside the refrigerator, an oxygen control component is provided in the rear space of the compartment, and a drawer that can be pushed and pulled forward and backward is provided in the front space of the compartment;

[0007] The oxygen control component comprises a shell, the shell is spaced apart from the bottom wall of the compartment, the bottom of the shell is open, a water-blocking and breathable carbon membrane plate is installed at the opening position, a cavity is enclosed between the shell and the water-blocking and breathable carbon membrane plate, a metal mesh plate is installed in the cavity, the metal mesh plate and the water-blocking and breathable carbon membrane plate are spaced apart, an electrolyte is contained in the cavity, the electrolyte covers the metal mesh, the water-blocking and breathable carbon membrane plate is electrically connected to the negative electrode of the DC power supply, the metal mesh plate is electrically connected to the positive electrode of the DC power supply, a pressure relief valve connected to the cavity is provided on the top wall of the shell, and the pressure relief port of the pressure relief valve is connected to the outside of the compartment;

[0008] The water-blocking and breathable carbon membrane plate acts as the cathode, electrolyzing the oxygen in the compartment into negative ions, which then enter the electrolyte. The metal mesh plate acts as the anode, oxidizing the negative ions in the electrolyte into oxygen, which is then discharged through the pressure relief valve.

[0009] Preferably, the water-blocking and breathable carbon film plate is composited by multiple layers of water-blocking and breathable carbon films.

[0010] Preferably, the metal mesh plate is made of nickel or zinc.

[0011] Preferably, the voltage provided by the DC power supply is 12V, which is provided by a refrigerator power module.

[0012] Preferably, the electrolyte is a potassium hydroxide solution.

[0013] Preferably, the metal mesh plate and the water-blocking and breathable carbon film plate are arranged in parallel, and the interval between them is between 5 mm and 60 mm.

[0014] Preferably, the volume of the electrolyte is smaller than the volume of the cavity.

[0015] Preferably, the rear side wall of the drawer is provided with a plurality of ventilation holes.

[0016] Preferably, the pressure relief valve is a one-way valve, and when the pressure in the cavity exceeds a certain value, the pressure relief valve automatically opens to exhaust air.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model discloses an oxygen-controlled drawer for a refrigerator, which separates oxygen in the air in the room through electrolysis reaction, thereby reducing the oxygen content in the storage space and ensuring the freshness of food. In addition, the oxygen-controlled drawer has a simple structure, no noise, low cost, and has obvious advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the implementation. Obviously, the drawings described below are only some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the structure of the oxygen control component of the utility model.

[0021] In the figure: 1. Shell; 2. Water-blocking and breathable carbon film plate; 3. Metal mesh plate; 4. DC power supply; 5. Pressure relief valve. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] A preferred embodiment of the utility model provides a refrigerator oxygen-controlled drawer. Specifically, a compartment with a front opening is arranged in the internal storage space of the refrigerator, an oxygen-control component is installed in the rear space of the compartment, and a drawer that can be pushed and pulled forward and backward is arranged in the front space of the compartment.

[0025] like Figure 1 As shown, the oxygen control component includes a plastic shell 1, which is fixedly installed on the top of the rear side of the compartment and has a certain interval with the bottom wall of the compartment. The bottom of the shell 1 is open, and a water-blocking and breathable carbon film plate 2 is sealed and installed at the opening position. Specifically, the water-blocking and breathable carbon film plate 2 is composed of a composite of multiple layers of water-blocking and breathable carbon films and has the function of water-blocking and breathable. A cavity is enclosed between the shell 1 and the water-blocking and breathable carbon film plate 2, and a metal mesh plate 3 is installed in the cavity. The material of the metal mesh plate 3 is nickel or zinc. The metal mesh plate 3 and the water-blocking and breathable carbon film plate 2 are spaced apart, and the interval is between 5mm-60mm. The cavity contains an electrolyte, which is an alkaline solution. Preferably, the utility model uses a potassium hydroxide solution, and the electrolyte submerges the metal mesh 3, and there is a certain gap between the liquid level of the electrolyte and the top wall of the shell 1, that is, the volume of the electrolyte is smaller than the volume of the cavity in the shell.

[0026] The water-blocking and breathable carbon film plate 2 is electrically connected to the negative electrode of the DC power supply 4 through a wire, and the water-blocking and breathable carbon film plate 2 serves as a cathode, and the metal mesh plate 3 is electrically connected to the positive electrode of the DC power supply 4 through a wire, and the metal mesh plate 3 serves as an anode. The voltage provided by the DC power supply 4 is 12V, which is provided by the refrigerator power module.

[0027] A pressure relief valve 5 connected to the cavity is provided on the top wall of the shell 1. The pressure relief port of the pressure relief valve 5 is connected to the outside of the chamber through a pipeline. When the pressure in the cavity exceeds a certain value, the pressure relief valve automatically opens to exhaust.

[0028] When the DC power supply 4 is powered on, the air in the room contacts the cathode water-blocking and breathable carbon film plate 2, and the oxygen in the air undergoes a reduction reaction in the water-blocking and breathable carbon film plate 2, namely: 2 +2H 2 O+4e - →4OH - As the cathode reduction reaction proceeds, the negative ions OH -It can enter the electrolyte and undergo oxidation reaction on the anode metal mesh plate 3, namely: 4OH - -4e - →O 2 +2H 2 O. Finally, the oxygen generated on the anode metal mesh plate 3, when the generated oxygen reaches a certain pressure, is automatically discharged to the outside of the compartment through the pressure relief valve 5, so as to separate the oxygen in the compartment air, thereby reducing the oxygen content in the storage space and ensuring the freshness of the food.

[0029] The drawer includes a drawer body, a plurality of ventilation holes are provided on the rear side wall of the drawer body to increase the fluidity of air, a cover plate is provided on the front side wall of the drawer body, and when the drawer is fully pushed into the compartment, the cover plate can seal the opening on the front side of the compartment. In addition, the left and right side walls of the drawer body are respectively provided with push-pull rails.

[0030] In summary, the oxygen-controlled drawer of the refrigerator described in the embodiment of the utility model separates oxygen in the air in the room through electrolysis reaction, thereby reducing the oxygen content in the storage space and ensuring the freshness of food. In addition, the oxygen-controlled drawer has a simple structure, no noise, and low cost, which has obvious advantages.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A refrigerator oxygen control drawer, characterized in that: A compartment with an opening at the front is provided inside the refrigerator, an oxygen control component is provided in the rear space of the compartment, and a drawer that can be pushed and pulled forward and backward is provided in the front space of the compartment; The oxygen control component comprises a shell, the shell is spaced apart from the bottom wall of the compartment, the bottom of the shell is open, a water-blocking and breathable carbon membrane plate is installed at the opening position, a cavity is enclosed between the shell and the water-blocking and breathable carbon membrane plate, a metal mesh plate is installed in the cavity, the metal mesh plate and the water-blocking and breathable carbon membrane plate are spaced apart, an electrolyte is contained in the cavity, the electrolyte covers the metal mesh, the water-blocking and breathable carbon membrane plate is electrically connected to the negative electrode of the DC power supply, the metal mesh plate is electrically connected to the positive electrode of the DC power supply, a pressure relief valve connected to the cavity is provided on the top wall of the shell, and the pressure relief port of the pressure relief valve is connected to the outside of the compartment; The water-blocking and breathable carbon membrane plate acts as the cathode, electrolyzing the oxygen in the compartment into negative ions, which then enter the electrolyte. The metal mesh plate acts as the anode, oxidizing the negative ions in the electrolyte into oxygen, which is then discharged through the pressure relief valve.

2. A refrigerator oxygen control drawer according to claim 1, characterized in that: The water-blocking and breathable carbon film plate is composited by multiple layers of water-blocking and breathable carbon films.

3. The refrigerator oxygen control drawer according to claim 1, characterized in that: The metal mesh plate is made of nickel or zinc.

4. The refrigerator oxygen control drawer according to claim 1, characterized in that: The voltage provided by the DC power supply is 12V, which is provided by the refrigerator power module.

5. The refrigerator oxygen control drawer according to claim 1, characterized in that: The electrolyte is potassium hydroxide solution.

6. The refrigerator oxygen control drawer according to claim 1, characterized in that: The metal mesh plate and the water-blocking and breathable carbon film plate are arranged in parallel, and the interval between them is between 5 mm and 60 mm.

7. The refrigerator oxygen control drawer according to claim 1, characterized in that: The volume of the electrolyte is smaller than the volume of the cavity.

8. The refrigerator oxygen control drawer according to claim 1, characterized in that: The rear side wall of the drawer is provided with a plurality of ventilation holes.

9. The refrigerator oxygen control drawer according to claim 1, characterized in that: The pressure relief valve is a one-way valve. When the pressure in the cavity exceeds a certain value, the pressure relief valve automatically opens to exhaust air.

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