WO2020119552A1

WO2020119552A1 - Decomposition apparatus and refrigerator comprising same

Info

Publication number: WO2020119552A1
Application number: PCT/CN2019/123037
Authority: WO
Inventors: 星野仁; 金野麻里菜
Original assignee: 青岛海尔电冰箱有限公司; 海尔智家股份有限公司; Aqua株式会社
Priority date: 2018-12-12
Filing date: 2019-12-04
Publication date: 2020-06-18
Also published as: JP7190733B2; JP2020094741A

Abstract

Provided are a decomposition apparatus (100) and a refrigerator (1) comprising the same. The decomposition apparatus (100) comprises: an irradiating portion (8), disposed in a storage chamber (2) of the refrigerator, for irradiating, to foods accommodated in the storage chamber (2), light having a wavelength of 100 to 300 nm; and a control portion (12), for controlling the irradiating portion (8) such that the product of the illuminance of light and the irradiation time is 2000 to 6000 µw/cm 2•H. The decomposition apparatus (100) utilizes a simple construction to decompose the residual pesticides on foods such as vegetables and fruits accommodated in the storage chamber (2) while inhibiting the deterioration of foods.

Description

Decomposition device and refrigerator including decomposition device

Technical field

The present invention relates to a device for decomposing residual pesticides adhering to the surface of food and a refrigerator including the device.

Background technique

In recent years, as food safety awareness has increased, devices that irradiate food with ultraviolet rays to decompose residual pesticides attached to vegetables or fruits have attracted attention. In such a device, the total amount of ultraviolet rays irradiated to the food affects the degree of decomposition of the residual pesticide and the quality of the food. That is, if the total amount of ultraviolet rays irradiated to the food is too small, the residual pesticide cannot be sufficiently decomposed. On the other hand, if the total amount of ultraviolet rays irradiated to the food is too large, the quality of the food may be degraded. In order to solve this problem, the refrigerator described in Patent Document 1 is provided with an additional device (oxygen enrichment device and oxygen concentration detection device, a pump or a hypochlorous acid aqueous solution generation and supply device, and a wavelength of 780 nm~ 1mm other light source), so as to balance the degree of decomposition of pesticides and the damage of the irradiated light to the food.

(Prior Art Literature)

(Patent Literature)

Patent Literature 1: JP 2010-216667

However, if an additional device is provided like the disassembly device described in Patent Document 1, there may be problems such as a complicated configuration, a limited storage space for food, and a high manufacturing cost. Therefore, it is considered that there is room for improvement regarding a method of balancing the degree of decomposition of pesticides and the damage to food by irradiated light.

Summary of the invention

An object of the present invention is to provide a decomposition device capable of efficiently decomposing residual pesticides adhering to food while suppressing deterioration of food quality with a simple configuration.

In order to achieve the above object, the decomposition device of the present invention includes: an irradiating section, which is provided in a storage compartment of a refrigerator, and irradiates food stored in the storage compartment with light having a wavelength of 100 nm or more and 300 nm or less; and a control section, which controls The irradiation section is such that the product of the light illuminance (μW/cm2) and the irradiation time (H) is 2000 (μW/cm2×H) or more and 6000 (μW/cm2×H) or less, and the decomposition device is attached to The pesticide in the food stored in the storage room is decomposed.

According to the present invention, by moderate irradiation of UV-C, it is possible to provide a decomposition device that efficiently decomposes residual pesticides adhering to food while suppressing damage to food stored in the storage chamber with a simple structure.

In addition, in the present invention, the disassembling device includes a cabinet provided in the storage room, and reflection surfaces are provided on the inner surfaces above, below, and on both sides of the cabinet, and the reflection under the cabinet The surface is inclined so as to become lower from the center toward the side of the box, and a food holding part for holding food is provided in the box. The food holding part is made of a mesh member or can transmit a wavelength of 100 nm A member of light above and below 300 nm is formed.

According to the present invention, since the light emitted from the irradiation unit is reflected in the cabinet, the food can be irradiated with light from multiple directions. Furthermore, since the food holding portion is formed of a mesh-shaped member or a member that can transmit light with a wavelength of 100 nm or more and 300 nm or less, the entire food is irradiated with light regardless of the position of the irradiating portion and the installation state (orientation) of the food .

In addition, in the present invention, the irradiation unit includes a plurality of light sources, and the plurality of light sources are arranged to irradiate the food stored in the storage room from different directions.

According to the present invention, food can be irradiated with light from multiple directions, and light can be irradiated to substantially the entire food.

In addition, in the present invention, the decomposition device includes: a cold air inlet that allows cold air circulating in the refrigerator to enter the cabinet or the storage room; and a cold air outlet that is provided near the light source , The cold air flowing in from the cold air flow inlet is discharged to the outside of the box or the storage room.

According to the present invention, it is possible to prevent a temperature increase in the cabinet or the storage room due to the heat emitted from the light source.

In addition, in the present invention, the cold air inlet is opened and closed by the control unit.

According to the present invention, by setting the cold air inlet to the open state, it is possible to prevent the temperature rise in the cabinet or the storage room due to the heat emitted from the light source. On the other hand, by setting the cold air inlet to the closed state, it is possible to prevent excessive drying of cold air in the cabinet or the storage room.

The decomposition device configured as described above can decompose the quality of food with a simple structure and efficiently decompose residual pesticides adhering to the food.

BRIEF DESCRIPTION

FIG. 1 is a schematic front view of a refrigerator provided with a disassembly device according to an embodiment of the present invention.

2A is a schematic cross-sectional view of the disassembly device according to an embodiment of the present invention when viewed from the front, and schematically shows the irradiation direction of light emitted from a light source by a dotted arrow.

2B is a schematic cross-sectional view when viewed from the side of the disassembly device according to an embodiment of the present invention, and schematically shows an irradiation direction of light emitted from a light source by a dotted arrow.

3A is a schematic cross-sectional view of the decomposition apparatus according to an embodiment of the present invention when viewed from the front, and the direction of the flow of cold air is schematically shown by the solid-line arrows.

3B is a schematic cross-sectional view when viewed from the side of the decomposition device according to the embodiment of the present invention, and the direction of the cold air flow is schematically shown by the solid-line arrow.

4A is a graph showing an example of the relationship between the pesticide removal rate and the product of UV-C irradiation time and irradiation intensity (UV irradiation index).

FIG. 4B shows the UV irradiation index and spinach appearance when spinach is irradiated with UV-C.

(Description of labels)

1 refrigerator

2 Storage room

4 Cabinet

4a Upper inner surface of the cabinet

4b The lower inner surface of the cabinet

4c Rear inner surface of the cabinet

4d, 4e side inner surface of the cabinet

6 Food Maintenance Department

6a Food holding container

6b Drawer door

6c The inner surface of the drawer door

8 Light source

8a First light source

8b Second light source

8c Third light source

8d Fourth light source

12 Control Department

14 Cold air inlet

16 Cooling air outlet

18 Opening and closing valve

100 decomposition device

detailed description

The specific embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic front view of a refrigerator 1 provided with a disassembly device 100 according to an embodiment of the present invention. The refrigerator 1 includes a storage room 2 for storing foods such as vegetables and fruits. The decomposition device 100 according to the first embodiment is installed in the storage room 2.

2A is a schematic cross-sectional view of the disassembly device 100 according to an embodiment of the present invention when viewed from the front. 2B is a schematic cross-sectional view when viewed from the side of the decomposition device 100 according to the embodiment of the present invention. The dotted arrows shown in FIGS. 2A and 2B schematically show the irradiation direction of light emitted from the light source 8 included in the decomposition device 100.

3A is a schematic cross-sectional view of the disassembly device 100 according to an embodiment of the present invention when viewed from the front. 3B is a schematic cross-sectional view when viewed from the side of the disassembly device 100 according to the embodiment of the present invention. The solid arrows shown in FIGS. 3A and 3B schematically show the flow direction of the cold air flowing in from the cold air inlet 14 of the decomposition device 100 and discharged from the cold air discharge port 16.

Hereinafter, the disassembly device 100 according to an embodiment of the present invention will be described with reference to FIGS. 2A to 3B.

The disassembly device 100 according to an embodiment of the present invention includes a cabinet 4. Inside the case 4, a food holding container 6a and a light source 8 for irradiating light to the food provided in the food holding container 6a are provided. A cold air inlet 14 and a cold air outlet 16 are also provided inside the box 4. The illuminance (μW/cm 2) and/or irradiation time (H) of the light source 8 and the opening and closing of the cold air inlet 14 are controlled by the control unit 12 included in the decomposition device 100.

(Cabinet)

The case 4 includes an upper inner surface 4a, a lower inner surface 4b, a rear inner surface 4c, and two lateral inner surfaces 4d, 4e, and the case 4 is opened toward the front. Each of the inner surfaces 4a to 4e is provided with a reflecting surface so as to cover the entire inner surface. In addition, the box 4 itself may be formed of a reflective member.

The lower inner surface 4b of the case 4 is inclined so that the inner surfaces 4d and 4e on both sides become lower from the central portion 4b1. That is, as shown in FIG. 2A and FIG. 3A, in a cross-sectional view of the decomposition device 100 viewed from the front, the lower inner surface 4b has a convex shape with the highest central portion 4b1.

(Food Keeping Department)

The food holding portion 6 is formed by a metal mesh-shaped bottom plate and side plates, and includes a food holding container 6a for installing food and a drawer door 6b connected to the food holding container 6a. The food holding container 6a is stored in the case 4 in the form of a drawer. When the food holding container 6a is stored in the case 4, the drawer door 6b covers the front opening of the case 4. The inner surface 6c of the drawer door 6b is also provided with a reflecting surface so as to cover the entire inner surface 6c. The size of the mesh of the food holding container 6a is such that the food provided in the food holding container 6a is not dropped but is held, and the light irradiation area under and on the side of the food can be sufficiently secured. The mesh size in the embodiment is, for example, 3 cm×3 cm.

(light source)

The emission wavelength of the light source 8 is UV-C of 100 nm or more and 300 nm or less. The light source 8 is, for example, LED or LD. The decomposition device 100 according to this embodiment includes four light sources 8a to 8d. The four light sources 8a to 8d are arranged to irradiate the food provided in the food holding container 6a from different directions. Specifically, the first light source 8 a and the second light source 8 b are provided on the upper inner surface 4 a of the cabinet 4. The third light source 8c and the fourth light source 8d are respectively provided at the boundary between the lateral inner surfaces 4d and 4e of the case 4 and the lower inner surface 4b. However, the positions of these light sources 8a to 8d are not limited to the above positions. In addition, the number of light sources 8 is not limited to four.

(Cold air inlet)

The cold air inlet 14 in this embodiment is provided in the upper central portion of the rear inner surface 4c of the cabinet 4. The decomposition device 100 includes an on-off valve 18 that opens and closes the cold air inlet 14. When the on-off valve 18 is opened, a part of the cold air circulating in the refrigerator 1 flows into the storage room 2 from the cold air inlet 14. Here, a part of the cold air is a part of the cold air whose temperature is low among the circulating cold air. In the present embodiment, for example, the cold air in the inlet side air duct before flowing into the storage chamber 2 through the evaporator. The cold air inlet 14 has an elliptical shape with a long axis of 10 cm and a short axis of 3 cm, for example. In order to prevent the food provided in the food holding container 6a from drying, the cold air inlet 14 is provided at a position where cold air directly hits the food.

(Cool air outlet)

After the cold air flowing into the cabinet 4 from the cold air inlet 14 circulates in the cabinet 4, it is discharged from the cold air discharge port 16 provided in the cabinet 4 to the outside of the cabinet 4. The cold air discharged to the outside of the cabinet 4 flows into the return air passage of the refrigerator 1, for example, and is restored to the cold air circulating in the refrigerator 1. The cold air discharge port 16 has a circular shape with a diameter of 10 cm, for example. The cold air outlet 16 is provided near the light source 8. Here, the vicinity refers to a range within approximately 3 mm from the outer peripheral end of the light source 8. When the decomposition device 100 includes a plurality of light sources 8 as in the present embodiment, the cool air discharge port 16 is provided near each light source 8.

(Control Department)

The control unit 12 performs,

(1) Control of the illuminance (μW/cm2) and/or irradiation time (H) of the light source 8 so that the product of the illuminance (μW/cm2) of the light emitted by the light source 8 and the irradiation time (H) is within a desired numerical range Within, and

(2) Opening and closing control of the opening and closing valve 18.

Here, FIG. 4A shows the product of pesticide removal rate and UV-C illuminance (μW/cm2) and irradiation time (H) (this product is referred to as UV irradiation index (μW/cm2×H) in this specification) Graph of an example of the relationship. The vertical axis is the pesticide removal rate (%) of the irradiated part. The horizontal axis is the UV irradiation index (μW/cm2×H).

The data on the relationship between the pesticide removal rate and the UV irradiation index is obtained by measuring the pesticide removal rate in the irradiated part of the food when the food is irradiated with UV-C, where UV-C is set to the illuminance and the irradiation time so that The UV irradiation index is in the range of 0 to 10000 (μW/cm2×H). This measurement was repeated to summarize the data, thereby creating a correlation graph of the relationship between pesticide removal rate and UV exposure index.

FIG. 4B shows the UV irradiation index (μW/cm2×H) when spinach is irradiated with UV-C and the appearance of spinach. The above-mentioned "desired numerical range" will be described with reference to FIGS. 4A and 4B.

In general, if the total amount of UV-C is small when the food is irradiated with UV-C, that is, the irradiation time is too short and/or the illuminance is too weak, the residual pesticides will not be decomposed. On the other hand, if the total amount of UV-C is too much, that is, the irradiation time is too long and/or the illuminance is too strong, the food is damaged. Therefore, based on the test data shown in FIGS. 4A and 4B, the present invention will allow the residual pesticide to be decomposed to a level that meets the requirements of consumers to a certain extent, and the UV exposure index (μW/cm2× The range of H) is set to "desired numerical range".

As shown in FIG. 4A, as the UV irradiation index increases, the decomposition rate of the pesticide becomes higher, and when the UV irradiation index is 2000 (μW/cm2×H) or more, the residual pesticide decomposes by more than 60%. On the other hand, as shown in FIG. 4B, as the UV irradiation index increases, the appearance of the food deteriorates, and when the UV irradiation index is 6000 (μW/cm2×H) or more, a significant change in the appearance of the food can be observed. Therefore, in the present embodiment, the desired numerical range of the UV irradiation index is set to be 2000 (μW/cm2×H) or more and 6000 (μW/cm2×H) or less.

Based on the above, the control unit 12 controls the illuminance (μW/cm 2) and/or the irradiation time (H) of the light source 8 so that the UV irradiation index of the light emitted by the light source 8 is 2000 (μW/cm 2 ×H) or more and 6000 The following (μW/cm2×H).

(Control of light source)

A few examples are given to explain the control method of the illuminance and/or irradiation time of the light source 8 performed by the control unit 12.

(1) Automatic control

When the temperature and humidity in the cabinet 4 are within an appropriate range, the irradiation of the light source 8 is automatically controlled so that the UV irradiation index becomes 2000 (μW/cm2×H) or more and 6000 (μW/cm2×H) or less. When the temperature and humidity do not fall into the appropriate range, as will be described later, the opening and closing of the on-off valve 18 is controlled so that the temperature and humidity fall within the appropriate range.

The method of automatic control is, for example, the following method: when foods with weak resistance to UV-C irradiation are included, a mode of long-time irradiation with a small output is selected, and those without weak resistance to UV-C irradiation are excluded. In the case of food, the mode of short-time irradiation with a large output is selected, that is, the illuminance and the irradiation time are controlled. The selection of the mode may be performed by the user via an interface such as a touch panel included in the disassembly device 100, or the control unit 12 may be used to recognize the stored food using an image sensor or the like.

(2) Control based on user input

(a) When the user specifies the irradiation time

This is the case where, for example, the user wants to set the irradiation time to T hours under conditions such as cooking food stored in the decomposition device 100 after T hours. As a method of specifying the irradiation time, for example, there is a method of converting a user's input into a signal and transmitting it to the control unit 12 via an interface such as a touch panel included in the decomposition device 100. The interface is not limited to the interface included in the decomposition device 100, but may also be the interface included in the refrigerator 1. If the irradiation time is specified, the control unit 12 controls the illuminance according to the irradiation time so that the UV irradiation index becomes 2000 (μW/cm2×H) or more and 6000 (μW/cm2×H) or less.

(b) The user specifies the irradiation intensity

This is the case where, for example, the user sets the illuminance to the food stored in the decomposition device 100. The method of specifying the illuminance is the same as the method of specifying the irradiation time. For example, there is a method of converting a user's input into a signal via an interface such as a touch panel included in the decomposition device 100 and sending it to the control unit 12. The interface is not limited to the interface included in the decomposition device 100, and may also be the interface included in the refrigerator 1. If the illuminance is specified, the control unit 12 controls the irradiation time according to the illuminance so that the UV irradiation index becomes 2000 (μW/cm2×H) or more and 6000 (μW/cm2×H) or less.

(Control of on-off valve)

Next, the opening and closing control method of the opening and closing valve 18 executed by the control unit 12 will be described.

The control unit 12 performs opening and closing control of the opening and closing valve 18 in accordance with predetermined conditions. The following is a specific example to explain the control method of the control unit 12.

When the light source 8 starts to irradiate, the temperature in the cabinet 4 rises based on the heat emitted from the light source 8 and the food in the cabinet 4 may spoil. Therefore, for example, the control unit 12 opens the on-off valve 18 when the temperature in the case 4 becomes higher than the predetermined upper limit temperature θH, and when the temperature in the case 4 becomes lower than the predetermined lower limit temperature θL The on-off valve 18 is closed. The upper limit temperature θH is, for example, 7°C, and the lower limit temperature θL is, for example, 3°C. The temperature in the cabinet 4 is transmitted to the control unit 12 via, for example, a temperature sensor provided in the cabinet 4.

In addition, the control unit 12 may include not only temperature conditions but also humidity conditions to perform opening and closing control of the on-off valve 18. The humidity of the cold air passing through the evaporator becomes low. If cold air with low humidity is supplied into the cabinet 4, the humidity in the cabinet 4 drops excessively, and the food in the cabinet 4 may be dried. Therefore, for example, the controller 12 opens the on-off valve 18 when the temperature in the cabinet 4 becomes higher than the predetermined upper limit temperature θH, and the humidity in the cabinet 4 becomes lower than the predetermined lower limit humidity HL The on-off valve 18 is closed. The lower limit humidity HL is, for example, 20% to 22%. The humidity in the cabinet 4 is transmitted to the control unit 12 by, for example, a humidity sensor provided in the cabinet 4.

In addition, the opening and closing control of the opening and closing valve 18 performed by the control unit 12 may perform the opening and closing control of the opening and closing valve 18 according to time conditions. For example, the control unit 12 may periodically open and close the on-off valve 18.

The control method described above is just an example, and the control unit 12 can perform opening and closing control of the on-off valve 18 based on conditions set by various combinations of temperature conditions, humidity conditions, and time conditions that can be conceived by those skilled in the art. In addition, the condition elements are not limited to temperature, humidity, and time.

The decomposition device 100 configured as described above can control the illuminance (μW/cm 2) and/or the irradiation time (H) of the light source 8 by the control unit 12 so that the irradiation index (μW/cm 2 ×H) becomes a desired numerical range. Thereby, by appropriate irradiation of UV-C, it is possible to provide a decomposition apparatus that efficiently decomposes the residual pesticide adhering to the food while limiting the damage to the food stored in the case 4 with a simple structure.

In addition, with the decomposition device 100 configured as described above, since the light emitted from the light source 8 is reflected in the cabinet 4 schematically shown in FIGS. 2A and 2B, the food stored in the cabinet 4 can be irradiated with light from multiple directions. Furthermore, since the food holding container 6a is formed of a mesh-shaped member, regardless of the position of the light source 8 and the installation state (orientation) of the food, the entire food is irradiated with light.

In addition, the disassembly device 100 configured as above includes a plurality of light sources 8, and the plurality of light sources 8 are provided to irradiate the food stored in the cabinet 4 from different directions. As a result, the food can be irradiated with light from multiple directions, and the food can be irradiated with light substantially as a whole.

In addition, the decomposition device 100 configured as described above allows cold air circulating in the refrigerator 1 to flow into the cabinet 4 and discharge the cold air from the cold air discharge port 16 to the outside of the cabinet 4. Thereby, it is possible to prevent a situation in which the temperature in the cabinet 4 rises higher than a preset temperature due to the heat emitted from the light source 8.

In addition, since the cold air discharge port 16 is provided near the light source 8, the cold air naturally flows around the light source 8, so that the light source 8 can be efficiently cooled.

In addition, the cold air inlet 14 is provided above the rear inner surface 4c of the cabinet 4, so the cold air flowing into the cabinet 4 will easily flow into the cabinet 4 due to the difference in specific gravity from the warmed air in the cabinet 4. Lower part. As a result, the entire interior of the cabinet 4 can be efficiently cooled.

In addition, the decomposition device 100 configured as described above can be controlled by the controller 12 to open and close the cold air inlet 14. Thus, by setting the cold air inlet 14 to the open state, it is possible to prevent the temperature in the cabinet 4 from rising due to the heat emitted from the light source 8. On the other hand, by setting the cold air inlet 14 to the closed state, it is possible to prevent the inside of the cabinet 4 from being excessively dried due to the cold air flowing into the cabinet 4 through the cold air inlet 14.

(Morph)

In the above-described embodiment, the food holding container 6a is a net-shaped container, but it is not limited thereto. For example, the food holding container 6a may be a container formed of a member that can transmit light with a wavelength of 100 nm or more and 300 nm or less.

In addition, although the food holding container 6a is housed in the case 4 in the form of a drawer in the above embodiment, it is not limited to this. For example, the food holding container 6a may be a holding container fixed in a box including an opening and closing door. In addition, for example, the cabinet 4 may be the storage compartment itself in the form of a drawer of the refrigerator 1.

In addition, in the above-described embodiment, the lower inner surface 4b is inclined so that the inner surfaces 4d and 4e on both sides are lowered from the central portion 4b1, and the cross section is convex, but it is not limited to this. For example, the lower inner surface 4b may be inclined so that the inner surfaces 4d and 4e on both sides increase from the central portion 4b1, and the cross section may be concave. In addition, for example, the inner surfaces 4d and 4e on both sides may be curved and inclined so as to become lower or higher from the central portion 4b1. In addition, not only the lower inner surface 4b, but also the upper inner surface 4a, the rear inner surface 4c, and the side inner surfaces 4d, 4e may be inclined or curved.

In addition, although the control unit 12 is a dedicated control device of the decomposition device 100 in the above-described embodiment, it is not limited to this. For example, a part of the control device of the main body of the refrigerator 1 can control the illuminance (μW/cm 2) and/or the irradiation time (H) of the light source 8 and the opening and closing control of the on-off valve 18.

Although the embodiments and the embodiments of the present invention have been described in this specification, the disclosure may be changed in details of the configuration, and the combination or order of elements in the embodiments and the embodiments may be changed without departing from the requested The scope and ideas of the invention are realized.

Claims

A decomposition device is characterized by comprising:

An irradiating part, which is provided in the storage room of the refrigerator and irradiates the food stored in the storage room with light having a wavelength of 100 nm or more and 300 nm or less; and

A control unit that controls the irradiation unit so that the product of light illuminance and irradiation time is 2000 or more and 6000 or less, the unit of the illuminance is μW/cm 2 , and the unit of the irradiation time is hour H,

The decomposition device decomposes the pesticide attached to the food stored in the storage room.
The decomposition device according to claim 1, characterized in that

The decomposition device includes a box disposed in the storage room,

A reflecting surface is provided on the inner surface above, below and on both sides of the box,

The reflecting surface under the box is inclined so as to become lower from the center toward the side of the box,

A food holding portion for holding food is provided in the box. The food holding portion is formed of a mesh-shaped member or a member that can transmit light having a wavelength of 100 nm or more and 300 nm or less.
The decomposition device according to claim 2, wherein the food holding portion is formed of a metal mesh bottom plate and side plates, and includes a food holding container for installing food and a drawer door connected to the food holding container .
The disassembling device according to claim 3, wherein when the food holding container is stored in the box, the drawer door covers the front opening of the box, and the inner surface of the drawer door also covers the inner surface The reflective surface is provided in an integrated manner.
The decomposition device according to claim 1 or 2, wherein

The irradiation part includes a plurality of light sources,

The plurality of light sources are arranged to irradiate the food stored in the storage room from different directions.
The decomposition device according to claim 5, characterized in that the decomposition device comprises 4 light sources, the first light source and the second light source are arranged on the upper inner surface of the box, and the third light source and the fourth light source are respectively arranged on The boundary between the lateral inner surface and the lower inner surface of the box.
The decomposition device according to claim 5, characterized in that

The decomposition device includes:

A box installed in the storage room,

A cold air inlet, which allows cold air circulating in the refrigerator to enter the cabinet or the storage room; and

The cold air discharge port is provided near the light source, and discharges the cold air flowing in from the cold air flow inlet to the outside of the cabinet or the storage room.
The decomposition device according to claim 7, characterized in that

The cold air inlet is controlled by the controller to open and close.
The decomposition device according to claim 7, wherein the cold air inlet is provided at a central upper portion of the rear inner surface of the box.
A refrigerator, characterized by comprising the decomposition device according to claim 1.