Refrigeration appliances

Abstract

The present application relates to the field of household appliance technology, and discloses a refrigeration appliance, including: a press chamber, a first mounting ring, a second mounting ring, and a first filter. An air inlet is provided on the side wall of the press chamber; the first mounting ring is arranged at the air inlet; the second mounting ring is embedded on the inner side of the first mounting ring, and the outer ring surface of the second mounting ring is detachably connected to the outer ring surface of the first mounting ring; the first filter cover is arranged at the air inlet to block the air inlet, and the edge of the first filter is pressed between the first mounting ring and the second mounting ring. In the present application, the disassembly and assembly efficiency of the first filter at the air inlet can be improved, and the maintenance cost of the refrigeration appliance can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a refrigeration appliance. Background Art

[0002] At present, refrigeration appliances are widely used in daily life and supermarket sales because of their ability to keep food and other items fresh. Refrigeration appliances use the evaporator in their refrigeration system to exchange heat with the food stored in the refrigeration room to keep the food fresh. The press chamber is set up to accommodate the condenser and compressor for heat dissipation to achieve a heat exchange balance in the refrigeration system. The press chamber is usually equipped with vents for heat dissipation. Impurities such as dust will enter the press chamber through the vents and adhere to the condenser, resulting in a decrease in the heat exchange effect of the condenser and increased energy consumption.

[0003] There is a refrigerator in the related art, characterized in that it includes: a box body and a refrigeration system. A heat dissipation bin is arranged at the bottom of the box body, a condenser in the refrigeration system is arranged in the heat dissipation bin, a vent is arranged in the heat dissipation bin for heat exchange with the external environment, and an air inlet grille is arranged on the upper cover of the heat dissipation bin to filter dust in the air flow.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] When the air inlet grille needs to be disassembled for cleaning or replacement, the installation and disassembly of the air inlet grille is difficult and the disassembly efficiency is low, which increases the maintenance cost of the refrigerator.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The disclosed embodiment provides a refrigeration appliance to improve the efficiency of disassembling and assembling a first filter element at an air inlet and reduce the maintenance cost of the refrigeration appliance.

[0009] In some embodiments, a refrigeration appliance includes: a compressor chamber, a first mounting ring, a second mounting ring, and a first filter. An air inlet is provided on the side wall of the compressor chamber; the first mounting ring is provided at the air inlet; the second mounting ring is embedded inside the first mounting ring, and the outer ring surface of the second mounting ring is detachably connected to the outer ring surface of the first mounting ring; the first filter cover is provided at the air inlet to block the air inlet, and the edge of the first filter is pressed between the first mounting ring and the second mounting ring.

[0010] Optionally, the first filter element includes filter cotton.

[0011] Optionally, the first filter element comprises a filter mesh.

[0012] Optionally, the thickness of the first filter element is less than or equal to one third of the thickness of the first mounting ring.

[0013] Optionally, the first mounting ring is embedded in the air inlet, and the outer ring surface of the first mounting ring is connected to the edge of the air inlet.

[0014] Optionally, the first mounting ring cover is arranged at the air inlet, and along a direction perpendicular to the plane where the air inlet is located, the projection of the air inlet falls inside the first mounting ring.

[0015] Optionally, the first mounting ring is detachably arranged at the air inlet.

[0016] Optionally, a lifting handle is provided on the windward side of the second mounting ring.

[0017] Optionally, the lifting handle is movably connected to the side wall of the second mounting ring, and the lifting handle can move toward or away from the second mounting ring.

[0018] Optionally, the side wall of the compressor chamber is also provided with an air outlet, and a second filter element is arranged at the air outlet.

[0019] The refrigeration appliance provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] By setting a first filter at the air inlet of the compressor chamber, dust and other impurities in the airflow flowing into the air inlet are filtered, reducing the pollution of the airflow to the interior of the compressor chamber. A first mounting ring is set at the air inlet, and a second mounting ring is embedded inside the first mounting ring. The first filter is installed by using the first mounting ring to cover the second mounting ring. When installing the first filter, it is only necessary to lay the first filter on the first mounting ring, press the second mounting ring to make the second mounting ring embedded in the first mounting ring, and the edge of the first filter is squeezed in the gap between the first mounting ring and the second mounting ring to complete the installation and fixation. When the first filter needs to be disassembled, cleaned or replaced, it is only necessary to remove the second mounting ring from the first mounting ring to make the squeezed first filter fall off. It can improve the disassembly and assembly efficiency of the first filter at the air inlet and reduce the maintenance cost of the refrigeration appliance.

[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0023] Figure 1 is a structural schematic diagram of a refrigeration appliance provided by an embodiment of the present disclosure;

[0024] Figure 2 is a schematic diagram of assembling a first mounting ring, a second mounting ring and a first filter element provided in an embodiment of the present disclosure;

[0025] Figure 3 is a structural schematic diagram of another refrigeration appliance provided by an embodiment of the present disclosure;

[0026] Figure 4 is a structural schematic diagram of an air inlet provided by an embodiment of the present disclosure;

[0027] Figure 5 is a schematic structural diagram of another air inlet provided by an embodiment of the present disclosure;

[0028] Figure 6 The embodiment of the present disclosure provides Figure 4 Enlarged schematic diagram of part A in the middle.

[0029] Reference numerals:

[0030] 100, compressor compartment; 110, air inlet; 120, condenser; 130, compressor; 140, air outlet; 150, cooling fan; 200, first mounting ring; 300, second mounting ring; 310, lifting handle; 311, sleeve; 312, telescopic rod; 400, first filter element; 500, housing; 600, second filter element. DETAILED DESCRIPTION

[0031] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0032] The terms "first", "second", etc. in the specification and claims of the disclosed embodiments and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate to describe the disclosed embodiments herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0033] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements, or components to have specific directions, or to be constructed and operated in specific directions. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0034] In addition, the terms "disposed", "connected" and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0035] Unless otherwise stated, the term "plurality" means two or more.

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0037] Combination Figure 1-6 As shown, in some embodiments, the refrigeration appliance includes: a press chamber 100, a first mounting ring 200, a second mounting ring 300 and a first filter element 400. The side wall of the press chamber 100 is provided with an air inlet 110; the first mounting ring 200 is arranged at the air inlet 110; the second mounting ring 300 is embedded in the inner side of the first mounting ring 200, and the outer ring surface of the second mounting ring 300 is detachably connected to the outer ring surface of the first mounting ring 200; the first filter element 400 covers the air inlet 110 to block the air inlet 110, and the edge of the first filter element 400 is pressed between the first mounting ring 200 and the second mounting ring 300.

[0038] The refrigeration appliance provided by the embodiment of the present disclosure is adopted, and by setting the first filter element 400 at the air inlet 110 of the compressor chamber 100, dust and other impurities in the airflow flowing into the air inlet 110 are filtered, thereby reducing the pollution of the interior of the compressor chamber 100 by the airflow. A first mounting ring 200 is set at the air inlet 110, and a second mounting ring 300 is embedded inside the first mounting ring 200. The first filter element 400 is installed by using the first mounting ring 200 to cover the second mounting ring 300. When installing the first filter element 400, it is only necessary to lay the first filter element 400 on the first mounting ring 200, press the second mounting ring 300 to make the second mounting ring 300 embed into the first mounting ring 200, and at this time, the edge of the first filter element 400 is squeezed in the gap between the first mounting ring 200 and the second mounting ring 300 to complete the installation and fixation. When the first filter element 400 needs to be disassembled, cleaned or replaced, the squeezed first filter element 400 can be removed by simply removing the second mounting ring 300 from the first mounting ring 200. This can improve the efficiency of disassembling and assembling the first filter element 400 at the air inlet 110 and reduce the maintenance cost of the refrigeration appliance.

[0039] Optionally, the refrigeration appliance further includes: a housing 500. A refrigeration compartment is provided inside the housing 500, and the press chamber 100 is arranged at the bottom of the housing 500. In this way, the refrigeration compartment is used to store food and other items for preservation, and the press chamber 100 is arranged at the bottom of the housing 500. The press chamber 100 and the refrigeration compartment reasonably occupy the space inside the housing 500, thereby improving the space utilization rate inside the housing 500.

[0040] Optionally, the refrigeration appliance comprises a refrigerator.

[0041] Optionally, the refrigeration appliance further includes: a refrigeration system. The refrigeration system is composed of an evaporator, a condenser 120 and a compressor 130. The evaporator is arranged on the rear side wall of the refrigeration compartment, and the condenser 120 and the compressor 130 are arranged in the compressor compartment 100. In this way, the high-temperature and high-pressure refrigerant flowing out of the compressor 130 flows to the condenser 120 to condense and release heat, and the refrigerant after condensation and heat release flows to the evaporator to evaporate and absorb heat, thereby exchanging heat with the refrigeration compartment through the evaporator, reducing the ambient temperature inside the refrigeration compartment, keeping the internal environment of the refrigeration compartment at a low temperature, and better storing food.

[0042] It is understandable that the refrigeration system should also include necessary components such as a throttling element and a liquid storage tank, which will not be elaborated here.

[0043] Optionally, the condenser 120 and the compressor 130 are both arranged in the compressor chamber 100. In this way, the airflow flowing in through the air inlet 110 exchanges heat with the condenser 120 and the compressor 130 respectively and then blows out, dissipating heat from the condenser 120 and the compressor 130, thereby ensuring the normal operation of the refrigeration system.

[0044] Optionally, the side wall of the compressor chamber 100 is further provided with an air outlet 140, and a second filter 600 is arranged at the air outlet 140. In this way, the external airflow enters the compressor chamber 100 through the air inlet 110 for heat exchange, and the airflow after heat exchange flows out to the outside through the air outlet 140, and the heat in the compressor chamber 100 is discharged to the outside. The second filter 600 is arranged at the air outlet 140 to reduce the risk of external dust and other pollutants entering the compressor chamber 100 through the air outlet 140 and causing pollution.

[0045] It can be understood that the installation structure of the second filter element 600 is the same as that of the first filter element 400, and will not be described in detail here.

[0046] Optionally, the air inlet 110 and the air outlet 140 are respectively arranged on opposite side walls of the compressor chamber 100. In this way, the air flow flowing into the air inlet 110 can flow out of the compressor chamber 100 without changing the flow direction, thereby reducing the loss of wind pressure and improving the heat dissipation effect.

[0047] Optionally, the flow area of ​​the air inlet 110 is the same as the flow area of ​​the air outlet 140. In this way, the air volume of the air inlet 110 matches the air volume of the air outlet 140, and the heat dissipation of the condenser 120 and the compressor 130 in the compressor compartment 100 is better.

[0048] Optionally, the line connecting the center of the air inlet 110 and the center of the air outlet 140 is parallel to the air flow direction in the compressor chamber 100. In this way, the air flow of the air inlet 110 can flow out through the air outlet 140 more smoothly, further reducing the loss of wind pressure and improving the heat dissipation effect.

[0049] Optionally, the condenser 120 and the compressor 130 are arranged between the air inlet 110 and the air outlet 140, and the condenser 120 and the compressor 130 are arranged in sequence along the air flow direction in the compressor chamber 100. In this way, the air flow flowing into the air inlet 110 can flow through the condenser 120 and the compressor 130 better, thereby improving the heat exchange efficiency and increasing the heat dissipation effect. As the main part of the refrigeration system responsible for heat dissipation, the condenser 120 is arranged on the windward side of the compressor 130, so that the air flow first flows through the condenser 120 for heat exchange and then flows through the compressor 130, while avoiding the compressor 130 from blocking the air flow, thereby improving the heat exchange effect of the condenser 120 and ensuring the normal operation of the refrigeration system.

[0050] Optionally, a heat dissipation fan 150 is further provided in the compressor chamber 100. The heat dissipation fan 150 is arranged on the leeward side of the compressor 130, with the air inlet end of the heat dissipation fan 150 facing the air inlet 110 and the air outlet end facing the air outlet 140. In this way, negative pressure is provided by the operation of the heat dissipation fan 150, so that the air inlet 110 sucks in the air flow for heat exchange, and the air flow after heat exchange can be blown out through the air outlet 140. The heat dissipation fan 150 is arranged on the leeward side of the compressor 130, so that the negative pressure generated by the heat dissipation fan 150 can better act on the compressor 130 and the condenser 120 side, and at the same time, the heat dissipation fan 150 is prevented from blocking the air flow on the compressor 130 and the condenser 120 side.

[0051] Optionally, the thickness of the first filter element 400 is less than or equal to one third of the thickness of the first mounting ring 200. In this way, since the first filter element 400 has a large thickness, it will also form a certain obstruction to the incoming airflow. At the same time, when the first filter element 400 with a large thickness is pressed and installed through the first mounting ring 200 and the second mounting ring 300, it is difficult for the second mounting ring 300 to be pressed into the first mounting ring 200, resulting in the rupture of the first mounting ring 200. Therefore, setting the thickness of the first filter element 400 to be less than or equal to one third of the thickness of the first mounting ring 200 can not only ensure the filtering effect of the first filter element 400, but also reduce the wind resistance of the first filter element 400, so that the first filter element 400 can be efficiently pressed and installed.

[0052] It can be understood that the thickness of the first mounting ring 200 refers to the thickness of the first mounting ring 200 along the axial direction of the first mounting ring 200 .

[0053] Optionally, the thickness of the first filter element 400 is equal to one quarter of the thickness of the first mounting ring 200. In this way, setting the thickness of the first filter element 400 equal to one quarter of the thickness of the first mounting ring 200 can not only ensure the filtering effect of the first filter element 400, but also reduce the wind resistance of the first filter element 400, so that the first filter element 400 can be efficiently press-fitted.

[0054] Optionally, the thickness of the first filter element 400 is 1 mm.

[0055] Optionally, the thickness of the second filter element 600 is the same as the thickness of the first filter element 400. In this way, the installation and removal of the second filter element 600 are facilitated.

[0056] In one embodiment, the first filter element 400 includes filter cotton. In this way, the filter cotton has a better filtering effect and can efficiently filter impurities such as dust in the incoming air flow, thereby reducing the risk of dust accumulation on the surface of the condenser 120.

[0057] Optionally, the second filter element 600 includes filter cotton, so as to improve the filtering effect of the second filter element 600 on the outlet air flow and reduce the risk of dust in the compressor chamber 100 being blown into the external environment.

[0058] For example, since most refrigeration appliances are placed in indoor environments for use, the compressor chamber 100 continuously inhales indoor air through the air inlet 110 for heat exchange, and then blows it back into the indoor environment from the air outlet 140. By arranging filter cotton at the air inlet 110 and also arranging filter cotton at the air outlet 140, the indoor air can be purified for a long time, so that dust and other impurities in the indoor air are all inhaled into the first filter element 400 of the air inlet 110 and the second filter element 600 of the air outlet 140.

[0059] In another embodiment, the first filter element 400 includes a filter screen. In this way, while the filter screen filters impurities such as dust in the incoming air flow, the wind resistance of the filter screen is relatively small, and the impact on the flow rate of the heat exchange air flow in the compressor chamber 100 is small. At the same time, the cost of the filter screen is low, and the cost of frequent replacement of the first filter element 400 is small.

[0060] Optionally, the second filter element 600 includes a filter net. In this way, while filtering impurities such as dust in the outlet air flow, the wind resistance of the outlet air flow is reduced, and the cost can be reduced when the second filter element 600 is replaced.

[0061] In another embodiment, the first filter element 400 at the air inlet 110 is a filter cotton, and the second filter element 600 at the air outlet 140 is a filter net. In this way, since the air inlet flow into the air inlet 110 comes from the outside of the compressor chamber 100, there are more dust and impurities in the air inlet flow, and the windward side surface of the condenser 120 is prone to dust accumulation. The air outlet flow blown out of the air outlet 140 comes from the inside of the compressor chamber 100, and the dust and impurity content in the air outlet flow is less. Therefore, setting the first filter element 400 at the air inlet 110 as filter cotton and setting the second filter element 600 at the air outlet 140 as a filter net can reduce the impact on the heat exchange gas flow and reduce costs.

[0062] Combination Figure 4 As shown, in one embodiment, the first mounting ring 200 is embedded in the air inlet 110, and the outer ring surface of the first mounting ring 200 is connected to the edge of the air inlet 110. In this way, when the first mounting ring 200 is embedded in the air inlet 110 and the second mounting ring 300 cooperates with the first mounting ring 200, the first mounting ring 200, the second mounting ring 300 and the filter element can all be embedded in the plane where the air inlet 110 is located, preventing the first mounting ring 200, the second mounting ring 300 and the first filter element 400 from protruding and avoiding interference with the external environment.

[0063] Optionally, the shape of the first mounting ring 200 is adapted to the air inlet 110, and the shape of the second mounting ring 300 is adapted to the first mounting ring 200. In this way, the first mounting ring 200 can be smoothly embedded in the air inlet 110, and the second mounting ring 300 can be smoothly embedded in the first mounting ring 200, and cooperate with the first mounting ring 200 to press-fit the first filter element 400.

[0064] Optionally, the air inlet 110 is a circular structure, and the first mounting ring 200 and the second mounting ring 300 are both circular structures. In this way, the connection stability between the first mounting ring 200 and the edge of the air inlet 110 is stronger, and the first mounting ring 200 and the second mounting ring 300 are more evenly stressed and less likely to deform.

[0065] It can be understood that the installation structure at the air outlet 140 is the same as the installation structure at the air inlet 110, and will not be described in detail here.

[0066] Combination Figure 5 As shown, in another embodiment, the first mounting ring 200 is covered at the air inlet 110, and the projection of the air inlet 110 falls inside the first mounting ring 200 along the direction perpendicular to the plane where the air inlet 110 is located. In this way, the first mounting ring 200 is covered at the air inlet 110, and the projection of the air inlet 110 can fall into the first mounting ring 200, and the first mounting ring 200 forms a surrounding structure for the air inlet 110, which can reduce the influence of the first mounting ring 200 on the flow area of ​​the air inlet 110, and ensure the air intake of the air inlet 110.

[0067] Optionally, when the second mounting ring 300 is embedded in the first mounting ring 200, the projection of the air inlet 110 falls inside the second mounting ring 300 in a direction perpendicular to the plane where the air inlet 110 is located. In this way, the second mounting ring 300 can also form a surrounding structure for the air inlet 110, reducing the influence of the second mounting ring 300 on the flow area of ​​the air inlet 110, and further ensuring the air intake of the air inlet 110.

[0068] In one embodiment, the first mounting ring 200 is detachably arranged at the air inlet 110. In this way, the first mounting ring 200 can be disassembled for maintenance and replacement, and the first mounting ring 200, the second mounting ring 300 and the first filter element 400 can be disassembled synchronously by disassembling the first mounting ring 200. When the first filter element 400 needs to be cleaned, the first mounting ring 200 can also be disassembled to avoid damage to the first filter element 400 caused by disassembling the second mounting ring 300, which makes the first filter element 400 unable to be reused after cleaning.

[0069] It is understandable that the first mounting ring 200 and the air inlet 110 can be connected by a detachable structure such as a snap-on slot, etc., which will not be elaborated here.

[0070] In a specific embodiment, the outer ring surface of the first mounting ring 200 is detachably connected to the edge of the air inlet 110 .

[0071] In another specific embodiment, the side wall of the first mounting ring 200 is detachably connected to the inner wall of the press chamber 100 corresponding to the periphery of the edge of the air inlet 110 .

[0072] Combination Figure 6 As shown, in one embodiment, a lifting handle 310 is provided on the windward side of the second mounting ring 300. Thus, when the second mounting ring 300 is embedded inside the first mounting ring 200, in order to provide a fulcrum for the removal of the second mounting ring 300, a lifting handle 310 is provided on the side wall of the second mounting ring 300, and the lifting handle 310 can be used to pull the second mounting ring 300 out of the inside of the first mounting ring 200, thereby improving the removal efficiency of the second mounting ring 300.

[0073] Optionally, the lifting handle 310 is movably connected to the side wall of the second mounting ring 300, and the lifting handle 310 can move toward or away from the second mounting ring 300. In this way, when the second mounting ring 300 needs to be disassembled, the lifting handle 310 can be pulled outward to move the lifting handle 310 away from the second mounting ring 300, thereby increasing the contact area of ​​the lifting handle 310 and better operating the lifting handle 310 to pull the second mounting ring 300 out from the inside of the first mounting ring 200. When the second mounting ring 300 does not need to be disassembled, the lifting handle 310 can be pushed toward the second mounting ring 300 to reduce the protruding length of the lifting handle 310 and reduce the risk of interference between the lifting handle 310 and the external environment.

[0074] Optionally, the lifting handle 310 includes: a sleeve 311 and a telescopic rod 312. One end of the sleeve 311 is embedded in the side wall of the second mounting ring 300, and the other end has an opening; the end of the telescopic rod 312 facing the second mounting ring 300 is telescopically embedded in the sleeve 311 along the opening, and the end of the telescopic rod 312 facing the second mounting ring 300 has a limiter, which can limit the telescopic distance of the telescopic rod 312. In this way, the length of the lifting handle 310 can be adjusted by extending and retracting the telescopic rod 312, and the setting of the limiter can prevent the telescopic rod 312 from falling out of the sleeve 311.

[0075] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A refrigeration appliance, characterized in that: include: The press chamber (100) has an air inlet (110) on its side wall; A first mounting ring (200) is arranged at the air inlet (110); A second mounting ring (300) is embedded inside the first mounting ring (200), and an outer ring surface of the second mounting ring (300) is detachably connected to an outer ring surface of the first mounting ring (200); The first filter element (400) covers the air inlet (110) to block the air inlet (110), and the edge of the first filter element (400) is pressed between the first installation ring (200) and the second installation ring (300).

2. The refrigeration appliance according to claim 1, characterized in that: The first filter element (400) includes filter cotton.

3. The refrigeration appliance according to claim 1, characterized in that: The first filter element (400) includes a filter screen.

4. The refrigeration appliance according to claim 1, characterized in that: The thickness of the first filter element (400) is less than or equal to one third of the thickness of the first mounting ring (200).

5. The refrigeration appliance according to claim 1, characterized in that: The first mounting ring (200) is embedded in the air inlet (110), and the outer ring surface of the first mounting ring (200) is connected to the edge of the air inlet (110).

6. The refrigeration appliance according to claim 1, characterized in that: The first installation ring (200) is covered at the air inlet (110), and along a direction perpendicular to the plane where the air inlet (110) is located, the projection of the air inlet (110) falls inside the first installation ring (200).

7. The refrigeration appliance according to any one of claims 1 to 6, characterized in that: The first mounting ring (200) is detachably arranged at the air inlet (110).

8. The refrigeration appliance according to any one of claims 1 to 6, characterized in that: A lifting handle (310) is provided on the windward side of the second mounting ring (300).

9. The refrigeration appliance according to claim 8, characterized in that: The lifting handle (310) is movably connected to the side wall of the second installation ring (300), and the lifting handle (310) can move toward or away from the second installation ring (300).

10. The refrigeration appliance according to any one of claims 1 to 6, characterized in that: The side wall of the press chamber (100) is also provided with an air outlet (140), and a second filter element (600) is arranged at the air outlet (140).

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