Refrigerator

Abstract

The utility model discloses a refrigerator which comprises a refrigerator body, a volume cavity used for storing articles is arranged in the refrigerator body, the refrigerator body is connected with a fresh air device, the fresh air device comprises an air pipe assembly, the air pipe assembly is used for communicating the volume cavity with the external environment, the fresh air device further comprises a filtering assembly, and the filtering assembly is used for filtering circulating air. The air pipe assembly comprises an air inlet pipe, a fresh air pipe, an air return pipe and an exhaust pipe, the air inlet pipe and the fresh air pipe are matched to be used for conveying air in the external environment into the volume cavity, and the air return pipe and the exhaust pipe are matched to be used for exhausting the air in the volume cavity to the external environment. According to the refrigerator, air in the volume cavity in the refrigerator body can be replaced by air in the external environment through cooperation of the air pipe assembly and the filter assembly, an external circulation air purification mode replaces an internal circulation air purification mode in the prior art, the air purification efficiency is effectively improved, and the service life of a filter material is effectively prolonged.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment, and in particular to a refrigerator. Background Technology

[0002] Refrigeration equipment is a device that lowers the temperature or removes heat from a space. It is typically used to keep food, medicine, and other items fresh, or to provide a comfortable temperature for the work environment. Common refrigeration equipment includes refrigerators, air conditioners, freezers, and refrigerated trucks.

[0003] Due to their insulation structure, existing refrigerators typically have a sealed storage space. When storing chemicals or items that easily emit odors, the sealed interior cannot effectively remove these smells, and these gaseous pollutants can potentially harm human health in severe cases. Currently used odor removal technologies include photocatalysis, activated carbon, silver ions, and low-temperature plasma. However, because the air purification method inside a refrigerator is internal circulation, its effectiveness is limited by the filtration principle, purification efficiency, and lifespan of the filter materials. Odor adsorption devices used by consumers still cannot solve this problem. Utility Model Content

[0004] This utility model provides a refrigerator that can solve the problems mentioned in the background art.

[0005] A refrigerator includes: a cabinet, wherein a volume cavity for storing items is provided inside the cabinet, the cabinet is connected to a fresh air device, the fresh air device includes a duct assembly for connecting the volume cavity to the external environment, and the fresh air device further includes a filter assembly for filtering the circulating gas.

[0006] Preferably, the duct assembly includes an air inlet duct, a fresh air duct, a return air duct, and an exhaust air duct. The air inlet duct and the fresh air duct cooperate to deliver air from the external environment into the volume chamber, and the return air duct and the exhaust air duct cooperate to exhaust air from the volume chamber to the external environment.

[0007] Preferably, the air inlet pipe is provided with an air inlet valve at its output end, and the air return pipe is provided with an air exhaust valve at its output end.

[0008] Preferably, a supply fan is provided at the inlet end of the fresh air duct, and an exhaust fan is provided at the inlet end of the exhaust air duct.

[0009] Preferably, the filter assembly includes a plasma deodorization module.

[0010] Preferably, the plasma deodorization module is connected to a particulate matter purification module.

[0011] Preferably, the particulate matter purification module is connected to a gaseous pollutant purification module.

[0012] Preferably, the gaseous pollutant purification module is connected to a photocatalytic purification module.

[0013] Preferably, the photocatalytic purification module is equipped with a switching core.

[0014] Preferably, the fresh air device also includes a bypass ventilation valve.

[0015] The beneficial effects of this utility model are:

[0016] In this refrigerator, the air inside the volume chamber is replaced by external air through the combination of ductwork and filter components. This external air circulation purification method replaces the internal air circulation purification method in existing technologies, effectively improving air purification efficiency and filter material lifespan. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of a refrigerator provided by this utility model;

[0018] Figure 2 A side view of a refrigerator provided by this utility model;

[0019] Figure 3 A side sectional view of a refrigerator provided by this utility model;

[0020] Figure 4 for Figure 1 A schematic diagram of the internal structure of the fresh air system.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Housing; 11. Air outlet; 2. Door; 3. Volumetric cavity; 4. Compressor chamber; 5. Fresh air unit; 501. Outer shell; 502. Inlet duct; 503. Fresh air duct; 504. Return air duct; 505. Exhaust duct; 506. Supply fan; 507. Exhaust fan; 508. Exhaust damper; 509. Plasma deodorization module; 510. Particulate matter purification module; 511. Gaseous pollutant purification module; 512. Photocatalytic purification module; 513. Exchange core; 514. Inlet damper; 515. Control system; 516. Bypass ventilation valve. Detailed Implementation

[0023] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0024] The inventors discovered that existing refrigerators typically have built-in air purification devices that generally employ physical adsorption for odor removal. However, due to the complex composition of polluted air inside the refrigerator, while filter materials are highly efficient at purifying single gases (such as formaldehyde), they are ineffective at purifying gases containing odors (such as ammonia and hydrogen sulfide), leading to unpleasant smells. Furthermore, the built-in purification devices rely on passive adsorption, which results in poor odor removal. Additionally, the filter materials used in existing devices have limited lifespans and are prone to failure after prolonged use, leaving odors unpurified. Once saturated, these devices can also release pollutants secondary to the refrigerator, exacerbating air pollution inside.

[0025] like Figures 1-3 As shown in the figure, a refrigerator provided by this utility model includes: a cabinet 1, and a door 2 connected to the cabinet 1. A volumetric cavity 3 for storing items is provided inside the cabinet 1, and two air vents 11 are provided in the cabinet 1. A compressor chamber 4 is provided below the volumetric cavity 3.

[0026] like Figure 1 , Figure 3 , Figure 4 As shown, the housing 1 is connected to the fresh air device 5, which can be integrated into the back, top or bottom of the housing 1.

[0027] The fresh air unit 5 includes a housing 501, which is fixedly installed on the box 1. A duct assembly is provided on the housing 501, which is used to connect the volume chamber 3 with the external environment.

[0028] Specifically, the duct assembly includes an air inlet duct 502, a fresh air duct 503, a return air duct 504, and an exhaust air duct 505. Both the fresh air duct 503 and the return air duct 504 are connected to the volumetric cavity 3 at their respective air outlets 11. The air inlet duct 502 and the fresh air duct 503 work together to deliver air from the external environment into the volumetric cavity 3, while the return air duct 504 and the exhaust air duct 505 work together to exhaust air from the volumetric cavity 3 to the external environment.

[0029] Furthermore, an air inlet valve 514 is installed at the output end of the air inlet duct 502, and an exhaust valve 508 is installed at the output end of the air return duct 504. The opening areas of the exhaust valve 508 and the air inlet valve 514 are controlled by a control system 515 installed inside the housing 501 to control the airflow rate discharged and entering the housing 1. The main input parameters of the control logic of the control system 515 are the outdoor air temperature and humidity and the indoor air temperature and humidity (this is prior art and will not be described in detail here). A supply fan 506 is installed at the input end of the fresh air duct 503, and an exhaust fan 507 is installed at the input end of the exhaust duct 505. If the odor in the volume chamber 3 is severe and the air quality is substandard, the control system 515 will adjust the speed of the supply fan 506 and the exhaust fan 507 to make the exhaust air volume greater than the supply air volume, so as to maintain the negative pressure state in the volume chamber 3 and prevent the odor or pollutants from leaking or overflowing. Conversely, it can maintain the positive pressure state in the volume chamber 3 to meet the needs of some items with high requirements for odor control.

[0030] The fresh air unit 5 also includes a filter assembly for filtering the circulating gas.

[0031] Specifically, the filtration assembly includes a plasma deodorization module 509, which is connected to a particulate matter purification module 510. The particulate matter purification module 510 is connected to a gaseous pollutant purification module 511, and the gaseous pollutant purification module 511 is connected to a photocatalytic purification module 512.

[0032] The photocatalytic purification module 512 is connected to an exchange core 513. The exchange core 513 uses a total heat exchange core to exchange sensible and latent heat between the drawn-in and exhausted air, thereby reducing the temperature of the air transported by the fresh air duct 503 to be close to the air temperature inside the volume cavity 3, thus reducing the loss of cooling capacity inside the refrigerator and saving energy. The air in the volume cavity 3 inside the cabinet 1 flows into the return air duct 504, passes through the exhaust valve 508, plasma deodorization module 509, particulate matter purification module 510, gaseous pollutant purification module 511, photocatalytic purification module 512, and exchange core 513, and then enters the exhaust duct 505 before being discharged outdoors. In this process, the air in the volume cavity 3 can be purified in multiple stages through the filter components to remove odors.

[0033] Understandably, the fresh air device 5 also includes a bypass ventilation valve 516. When the control system 515 detects that the outdoor air temperature, humidity and air quality are good, the bypass ventilation valve 516 opens, and outdoor air can be directly sent into the volume chamber 3.

[0034] In this embodiment, during use, air in the volume chamber 3 flows into the return air duct 504, passes through the exhaust valve 508, filter assembly, and exchange core 513, enters the exhaust duct 505, and is then discharged outdoors. During this process, the air undergoes multi-stage purification through the filter assembly, removing odors and preventing odors in the volume chamber 3 from affecting stored items, thus protecting human health. Simultaneously, fresh air from the external environment enters the intake duct 502, passes through the intake valve 514, exchange core 513, and filter assembly, and then enters the fresh air duct 503, before entering the volume chamber 3 from the fresh air duct 503. This achieves air replacement within the volume chamber 3 of the housing 1, purifying the air inside the volume chamber 3. The two airflows exchange energy at the exchange core 513. By adjusting the opening areas of the exhaust valve 508 and the intake valve 514, the flow rates of the airflow exiting the volume chamber 3 and entering the volume chamber 3 are controlled.

[0035] In this invention, the air inside the volume chamber 3 can be replaced by ambient air (i.e., fresh air) through the fresh air device 5. This external air circulation purification method replaces the internal air circulation method in existing technologies, effectively improving odor removal efficiency, reducing reliance on filter media, and increasing purification efficiency and filter media lifespan. Simultaneously with air replacement, the cold air discharged from the cabinet 1 is recovered and sent into the volume chamber 3 along with the fresh air, further reducing refrigerator energy consumption. This makes the refrigerator more suitable for storing chemicals and items that easily emit odors.

[0036] Moreover, the duct assembly, as an air replacement duct, together with the air valve and fan, can organize the airflow path and then force purification through the filter assembly to avoid air pollution in the box 1.

[0037] Working principle: During use, the air in the volume chamber 3 flows into the return air duct 504, passes through the exhaust valve 508, filter assembly, and exchange core 513, and enters the exhaust duct 505 before being discharged outdoors. During this process, the air is purified in multiple stages by the filter assembly to remove odors. At the same time, fresh air from the external environment enters the air inlet duct 502, passes through the air inlet valve 514, exchange core 513, and filter assembly, and then enters the fresh air duct 503. From the fresh air duct 503, it enters the volume chamber 3, thereby achieving air replacement in the volume chamber 3 inside the housing 1 and purifying the air in the volume chamber 3. The two airflows exchange energy at the exchange core 513.

[0038] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A refrigerator, characterized in that, include: Box (1), wherein a volume cavity (3) for storing items is provided inside the box (1); The housing (1) is connected to a fresh air device (5), which includes a duct assembly for connecting the volume chamber (3) to the external environment; The fresh air device (5) also includes a filter assembly for filtering the circulating gas.

2. A refrigerator as described in claim 1, characterized in that, The air duct assembly includes an air inlet duct (502), a fresh air duct (503), a return air duct (504), and an exhaust duct (505). The air inlet duct (502) and the fresh air duct (503) cooperate to transport air from the external environment into the volume chamber (3), and the return air duct (504) and the exhaust duct (505) cooperate to exhaust the air in the volume chamber (3) to the external environment.

3. A refrigerator as described in claim 2, characterized in that, An air inlet valve (514) is provided at the output end of the air inlet pipe (502), and an air outlet valve (508) is provided at the output end of the air return pipe (504).

4. A refrigerator as described in claim 3, characterized in that, The fresh air duct (503) is equipped with a supply fan (506) at its input end, and the exhaust duct (505) is equipped with an exhaust fan (507) at its input end.

5. A refrigerator as described in claim 1, characterized in that, The filtration assembly includes a plasma deodorization module (509).

6. A refrigerator as described in claim 5, characterized in that, The plasma deodorization module (509) is connected to a particulate matter purification module (510).

7. A refrigerator as described in claim 6, characterized in that, The particulate matter purification module (510) is connected to a gaseous pollutant purification module (511).

8. A refrigerator as described in claim 7, characterized in that, The gaseous pollutant purification module (511) is connected to a photocatalytic purification module (512).

9. A refrigerator as described in claim 8, characterized in that, The photocatalytic purification module (512) is connected to an exchange core (513).

10. A refrigerator as described in claim 1, characterized in that, The fresh air device (5) also includes a bypass ventilation valve (516).

Images