Refrigerator door and refrigerator thereof
By installing an air pressure balancing device on the refrigerator door, the problem of difficulty in opening the door caused by air pressure difference is solved, maintaining the refrigerator's cooling effect and energy-saving performance, while protecting the interior from dryness and extending its service life.
Patent Information
- Application Number
- CN202520053249.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-09
AI Technical Summary
The refrigerator door is difficult to open due to the pressure difference between the inside and outside of the refrigerator. Existing methods for improving the door seal structure affect the heat preservation performance and energy saving effect.
A pressure balancing device is installed on the refrigerator door, including a vent pipe, a one-way valve, a filter plug, and a breathable and waterproof membrane. It responds to changes in the internal air pressure of the refrigerator, allowing gas to flow in a timely manner, ensuring that gas enters the refrigerator in one direction, preventing cold air leakage, and filtering impurities.
It enables normal opening and closing of the refrigerator door, maintains cooling effect and energy efficiency, keeps the inside of the refrigerator dry, and extends its service life.
Smart Images
Figure CN223726691U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of refrigerator air pressure balance, in particular to a refrigerator door and a refrigerator. BACKGROUND
[0002] In daily life, as a necessary household appliance, the convenience of refrigerator use is very important. However, in actual use, the refrigerator door often needs a large force to open, which brings inconvenience to the user.
[0003] An important reason for the large opening force of the refrigerator is the air pressure difference between the inside and outside of the refrigerator. Since the inside of the refrigerator is in a low-temperature and relatively closed state, when the refrigerator door is closed for a period of time, the internal air pressure will be lower than the external air pressure, thereby generating a pressure difference, which requires overcoming this resistance when opening the door. In order to solve this problem, some refrigerators reduce the sealing degree by improving the structure of the door seal, thereby reducing the air pressure difference, but this may affect the heat preservation performance and energy saving effect of the refrigerator. CONTENT OF THE UTILITY MODEL
[0004] Therefore, it is necessary to provide a refrigerator door and a refrigerator that balance the pressure difference between the inside and outside of the refrigerator to reduce the opening force, while not affecting the heat preservation performance and energy saving effect of the refrigerator.
[0005] To solve the above technical problems, the present application provides the following technical solutions:
[0006] A refrigerator door, comprising a door body and an air pressure balancing device, the door body is used to install on a cabinet of a refrigerator and open / close the cabinet, the air pressure balancing device is installed on the door body and used to communicate the inside and outside of the cabinet, the air pressure balancing device comprises an air passage, a one-way valve, a filter plug and a breathable water-proof membrane, the air passage is installed in the door body, the one-way valve is installed on the door body and connected with one end of the air passage, the filter plug is installed on the door body and connected with the other end of the air passage, and the breathable water-proof membrane is arranged in the air passage and located at the position of the one-way valve and / or the filter plug.
[0007] The one-way valve can respond to the change of the internal air pressure of the cabinet, so that the gas can flow to the filter plug through the one-way valve and enter the inside of the cabinet.
[0008] It can be understood that the air pressure balancing device provided by the application can make the gas flow in time in response to the change of the air pressure inside the refrigerator after the refrigerator door is closed, thereby avoiding the problems of difficult opening of the door or not tightly closing the door caused by the air pressure difference between the inside and outside of the box body, and ensuring the normal opening and closing operation of the refrigerator door. The setting of the one-way valve ensures that the gas can only flow in a specific direction, i.e., from the outside to the inside of the box body through the filter plug, the air passage and the one-way valve, and cannot flow in the opposite direction, thereby effectively preventing the leakage of cold air in the box body and maintaining the refrigeration effect and energy efficiency of the refrigerator. The filter plug can filter out impurities in the gas entering the box body, thereby reducing the pollution to the inside of the refrigerator. The air-permeable water-proof membrane can prevent water from entering the box body while allowing the gas to pass through, thereby keeping the inside of the box body dry and helping to protect the food and components inside the refrigerator from the influence of a humid environment.
[0009] In one of the embodiments, the air passage is provided with a heat preservation member.
[0010] It can be understood that the setting of the heat preservation member can further avoid the loss of cold air in the box body, thereby effectively ensuring the refrigeration effect of the refrigerator.
[0011] In one of the embodiments, the heat preservation member is configured as any one of a foamed member, a sponge member and an aerogel member.
[0012] In one of the embodiments, the door body is provided with a mounting hole, and a mounting rack is arranged in the door body and located at the mounting hole.
[0013] The one-way valve is arranged in the mounting hole and connected to the mounting rack.
[0014] It can be understood that the design of mounting the one-way valve on the door body does not occupy the space inside the refrigerator, and at the same time does not affect the appearance and internal layout of the refrigerator, thereby optimizing the overall performance and use experience of the refrigerator.
[0015] In one of the embodiments, the one-way valve is sealingly connected to the inner wall surface of the mounting hole.
[0016] In one of the embodiments, the filter plug is sealingly connected to the door body.
[0017] In one of the embodiments, a groove is formed on the inner side surface of the door body, and one end of the air passage connected to the filter plug is located in the groove.
[0018] In one of the embodiments, the air passage extends along the height direction of the door body, and one end of the air passage close to the filter plug is provided with a bending section.
[0019] In the height direction of the door body, the highest point of the bending section is located above the filter plug.
[0020] In one embodiment, the number of air pressure balancing devices is two, and the two air pressure balancing devices are symmetrically arranged along the central axis of the door length direction.
[0021] It can be understood that the provision of two air pressure balancing devices can increase the reliability of the device. If one of the devices fails or is blocked, the other device can still function to ensure a certain degree of air pressure balancing and filtering function, thereby improving the reliability and stability of the entire system. At the same time, the two air pressure balancing devices are symmetrically arranged along the central axis to adapt to the air pressure difference at different positions and ensure the balance of the air pressure on both sides of the refrigerator in the door length direction, thereby making the pressure on both sides close.
[0022] The present application also provides the following technical solutions:
[0023] A refrigerator comprising a cabinet and the refrigerator door of any of the above embodiments.
[0024] It can be understood that the use of a refrigerator door equipped with an air pressure balancing device can provide good air pressure balancing and protection for the refrigerator, which is beneficial to reduce the pressure and wear of the refrigerator door and related components and prolong the service life of the refrigerator.
[0025] Compared with the prior art, the refrigerator door and the refrigerator thereof can respond to changes in the air pressure inside the cabinet after the door is closed, allowing the gas to flow in a timely manner, thereby avoiding problems such as difficulty in opening the door or not closing the door tightly due to the air pressure difference between the inside and outside of the cabinet, and ensuring the normal opening and closing operation of the refrigerator door. The provision of the one-way valve ensures that the gas can only flow in a specific direction, i.e., from the outside to the inside of the cabinet through the filter plug, the air passage, and the one-way valve, and cannot flow in the opposite direction, effectively preventing the leakage of cold air from the cabinet and maintaining the refrigeration effect and energy efficiency of the refrigerator. The filter plug can filter out impurities in the gas entering the cabinet, reducing pollution to the interior of the refrigerator. The air-permeable waterproof membrane can prevent water from entering the cabinet while allowing gas to pass through, keeping the cabinet dry and helping to protect the food and components inside the refrigerator from a humid environment. BRIEF DESCRIPTION OF DRAWINGS
[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0027] Figure 1A refrigerator structure with a gas pressure equalizing device provided in the present application.
[0028] Figure 2 A bottom view of a refrigerator with a gas pressure equalizing device provided in the present application.
[0029] Figure 3 A refrigerator structure with a gas pressure equalizing device provided in the present application Figure 2 A-A sectional view of the gas pressure equalizing device.
[0030] Figure 4 A refrigerator structure with a gas pressure equalizing device provided in the present application Figure 2 B-B sectional view of the gas pressure equalizing device.
[0031] Figure 5 A refrigerator structure with a gas pressure equalizing device provided in the present application Figure 4 An enlarged view of C in the middle.
[0032] The reference numerals of the components are as follows:
[0033] 100, refrigerator door; 10, door body; 11, mounting hole; 111, inner wall surface; 12, mounting bracket; 13, recess; 20, gas pressure equalizing device; 21, air passage; 211, heat insulating member; 212, bent section; 22, one-way valve; 23, filter plug; 24, air permeable water-proof membrane;
[0034] 200, cabinet. DETAILED DESCRIPTION
[0035] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without using some or all of these specific details. In other instances, well-known process steps have not been described in detail in order to avoid unnecessarily obscuring the present application.
[0036] It is to be understood that when an element is referred to as being "on" or "fixed to" another element, it can be directly on or fixed to the other element or intervening elements can also be present. In addition, when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and the like as used herein are used for explanation only and not to limit the present application.
[0037] Furthermore, the terms "first", "second", etc. are used herein for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicating a recited technical feature to the exclusion of the other. With respect to language that can have different meanings based on context, including specific contexts of the description, terms can be used in different ways and terms should be interpreted accordingly.
[0038] In the present application, unless specifically stated and limited otherwise, the terms "on", "under", "above" and "below" used in the present application are used for descriptive purposes, and are not to be construed as indicating or implying relative importance or implicating a recited technical feature to the exclusion of the other. With respect to language that can have different meanings based on context, including specific contexts of the description, terms can be used in different ways and terms should be interpreted accordingly.
[0039] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. The use of the terms "and / or" in the description herein is intended to encompass the various combinations of the items that are either related or unrelated to each other.
[0040] Please refer to Figures 1 to 5 The present application provides a refrigerator door 100, which comprises a pressure equalization device 20 and a door body 10, the door body 10 is used to be installed on a cabinet 200 of a refrigerator and to open / close the cabinet 200, the pressure equalization device 20 is installed on the door body 10 and is used to communicate the inside of the cabinet 200 with the outside (atmosphere); in this way, after the refrigerator door 100 is closed, the pressure difference between the inside and the outside of the refrigerator can be balanced by the pressure equalization device 20, and the normal opening / closing operation of the refrigerator door 100 is ensured.
[0041] As shown in Figure 4 and Figure 5 The pressure equalization device 20 comprises an air passage 21, a one-way valve 22, a filter plug 23 and a breathable water-proof membrane 24, the air passage 21 is installed in the door body 10, the one-way valve 22 is installed on the door body 10 and is connected with one end of the air passage 21, the filter plug 23 is installed on the door body 10 and is connected with the other end of the air passage 21, the breathable water-proof membrane 24 is arranged in the air passage 21 and is located at the position of the one-way valve 22 and / or the filter plug 23; wherein the one-way valve 22 can respond to the change of the internal pressure of the cabinet 200, so that the gas can flow through the one-way valve 22 to the filter plug 23 and enter the inside of the cabinet 200.
[0042] From the above, by setting the air pressure balancing device 20, the gas can flow in time in response to the change of the internal air pressure of the cabinet 200 after the refrigerator door 100 is closed, avoiding the problem of difficult opening or not tightly closing the door caused by the air pressure difference between the inside and outside of the cabinet 200, and ensuring the normal opening and closing operation of the refrigerator door 100. The setting of the one-way valve 22 ensures that the gas can only flow in a specific direction, i.e. from the outside through the one-way valve 22, the air passage 21 and the filter plug 23 into the inside of the cabinet 200, and will not flow in the opposite direction, effectively preventing the leakage of cold air in the cabinet 200 and maintaining the refrigeration effect and energy efficiency of the refrigerator. The filter plug 23 can filter out impurities in the gas entering the cabinet 200, reducing pollution to the inside of the refrigerator. The air-permeable waterproof membrane 24 can prevent water from entering the cabinet while allowing gas to pass through, keeping the inside of the cabinet dry and helping to protect the food and components inside the refrigerator from a humid environment.
[0043] It needs to be explained that the minimum temperature T min The difference from room temperature is AT0, and the volume of the freezer compartment is V1, then AP0 = nRAT0 / V1, which is the internal and external pressure difference caused by refrigeration. The one-way valve 22 with a threshold value of AP0 is used, so when the pressure difference further increases, the one-way valve 22 opens and the outside air flows into the chamber until the pressure difference returns to AP0 again. Using this principle, in the initial stage of opening the door, i.e. the stage when the door seal is stretched but still sealed, assuming that the door stretching distance in this stage is AD0 (about 9mm or 10mm in existing refrigerators), d1 and d2 are the depths of the chamber before and after stretching, and the volume of the chamber after stretching is V2, the additional pressure difference AP1 = nRT min AP1 = nRT min AD0 / Sd1d2, which can be offset by the one-way valve 22, thereby realizing the reduction of the opening force, and the reduction value is AF = AP1S = nRT min AD0 / d1d2.
[0044] Please refer to Figures 2 to 5 As shown in the figure, the door body 10 is provided with a mounting hole 11, and a mounting rack 12 is arranged in the door body 10, and the mounting rack 12 is located at the mounting hole 11; the one-way valve 22 is arranged in the mounting hole 11 and connected to the mounting rack 12. In this way, by installing the one-way valve 22 on the door body, the internal space of the refrigerator is not occupied, and at the same time, the appearance and internal layout of the refrigerator are not affected. The overall performance and use experience of the refrigerator are optimized.
[0045] Further, a recess 13 is formed on the inner side surface of the door body 10, and one end of the air passage 21 connected to the filter plug 23 is located in the recess 13. In this way, by setting the recess 13, foreign matter is prevented from blocking the filter plug 23, especially water is prevented from flowing directly to the air passage 21, thereby blocking the filter plug 23 or affecting heat insulation, ensuring the gas flow of the air pressure balancing device 20.
[0046] Here, the recess 13 can be square, circular, or the like.
[0047] In an embodiment, referring to Figure 5 As shown, the air passage 21 is provided with a heat preservation member 211. In this way, by providing the heat preservation member 211, the loss of cold air in the cabinet 200 can be further avoided, and the refrigeration effect of the refrigerator can be effectively guaranteed.
[0048] Here, the heat preservation member 211 is configured as any one of a foamed member, a sponge member, and an aerogel member.
[0049] Please continue to refer to Figure 5 As shown, the one-way valve 22 is sealingly connected with the inner wall surface 111 of the mounting hole 11. The filter plug 23 is sealingly connected with the door body 10.
[0050] As preferred, the sealing connection method is any one of a sealant sealing, a threaded sealing, a packing sealing, and a mechanical sealing. The selection is made by considering the actual sealing requirements, the working environment, the materials and shapes of the connected components, and the like.
[0051] In the present embodiment, the sealant sealing method is used to achieve the sealing connection.
[0052] Please continue to refer to Figure 5 As shown, the air passage 21 extends along the height direction of the door body 10, and the air passage 21 is provided with a bending section 212 at the end close to the filter plug 23; wherein, along the height direction of the door body 10, the highest point of the bending section 212 is located above the filter plug 23. Here, by providing the bending section 212, water backflow can be further avoided.
[0053] In an embodiment, as Figure 2 As shown, the number of the air pressure balancing devices 20 can be set to be multiple.
[0054] In the present embodiment, the number of the air pressure balancing devices 20 is set to be two, and the two air pressure balancing devices 20 are symmetrically arranged with the central axis in the length direction of the door body 10 as the axis of symmetry. In this way, by providing two air pressure balancing devices 20, the reliability of the device can be increased, and if one of the devices fails or is blocked, the other device can still function, which can guarantee the air pressure balancing and filtering functions of the device, and improve the reliability and stability of the entire system. At the same time, the two air pressure balancing devices 20 are symmetrically arranged along the central axis, which can make the refrigerator have uniform left and right air pressures and faster air inlet speed (i.e. power response speed), and make the door opening more smooth.
[0055] Please refer to Figure 1 and Figure 2The refrigerator provided by the application also comprises a refrigerator door 100 in any of the above embodiments.
[0056] The technical features of the above embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not contradict, they should be considered as the scope of the description.
[0057] The above embodiments only express several implementation manners of the application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent application scope. It should be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the application, and these all belong to the protection scope of the application. Therefore, the patent protection scope of the application should be subject to the appended claims.
Claims
1. A refrigerator door, comprising a door body (10) for mounting on a cabinet (200) of a refrigerator and opening / closing the cabinet (200), and a gas pressure balancing device (20) mounted on the door body (10) for communicating the inside of the cabinet (200) with the outside. characterized in that The gas pressure balancing device (20) comprises a gas passage pipe (21) mounted in the door body (10), a one-way valve (22) mounted on the door body (10) and connected with one end of the gas passage pipe (21), a filter plug (23) mounted on the door body (10) and connected with the other end of the gas passage pipe (21), and a gas-permeable water-proof membrane (24) arranged in the gas passage pipe (21) at the position of the one-way valve (22) and / or the filter plug (23). The one-way valve (22) is capable of responding to the change of the gas pressure inside the cabinet (200) to allow the gas to flow through the one-way valve (22) to the filter plug (23) and into the inside of the cabinet (200).
2. The refrigerator door according to claim 1, characterized in that The gas passage pipe (21) is provided with a heat preservation member (211).
3. The refrigerator door according to claim 2, characterized in that The heat preservation member (211) is configured as any one of a foaming member, a sponge member and a aerogel member.
4. The refrigerator door of claim 1, wherein The door body (10) is provided with a mounting hole (11), and the door body (10) is provided with a mounting rack (12) at the mounting hole (11). The one-way valve (22) is arranged in the mounting hole (11) and connected with the mounting rack (12).
5. The refrigerator door according to claim 4, characterized in that The one-way valve (22) is sealingly connected with the inner wall surface (111) of the mounting hole (11).
6. The refrigerator door of claim 1, wherein The filter plug (23) is sealingly connected with the door body (10).
7. The refrigerator door of claim 1, wherein The door body (10) is provided with a recess (13) on the inner side surface, and one end of the gas passage pipe (21) connected with the filter plug (23) is located in the recess (13).
8. The refrigerator door of claim 1, wherein The gas passage pipe (21) extends along the height direction of the door body (10), and one end of the gas passage pipe (21) close to the filter plug (23) is provided with a bending section (212). The highest point of the bending section (212) is located above the filter plug (23) along the height direction of the door body (10).
9. The refrigerator door of claim 1, wherein The number of the gas pressure balancing devices (20) is two, and the two gas pressure balancing devices (20) are symmetrically arranged along the central axis of the door body (10).
10. A refrigerator characterized by comprising: The refrigerator comprises the cabinet (200) and the refrigerator door according to any one of claims 1-9.