Negative pressure release structure and refrigerator with same
By embedding a negative pressure release structure in the refrigerator door body, the difference in air pressure inside and outside the refrigerator and the buoyancy of the lightweight plastic float ball is solved, and the problem of difficulty in opening the refrigerator door body when the temperature difference inside and outside is large is eliminated, and the sound of the drain when the door is closed after opening is eliminated.
Patent Information
- Application Number
- CN202421533019.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-07-01
AI Technical Summary
When the temperature difference between the inside and outside of the existing refrigerator is large, it is difficult to open the door, and it will cause a whistle to the drain when it is opened and closes it.
Design a negative pressure release structure, including an outer shell, an air pressure adjustment chamber and a lightweight plastic float. By utilizing the air pressure difference inside and outside the refrigerator and the buoyancy of the float, it can change the pressure difference inside and outside the refrigerator, which is convenient to open the refrigerator door and solve the problem of the whistling sound of the drain outlet.
It is possible to open the refrigerator door body more effortlessly when the temperature difference between the inside and outside is large, avoiding the sound of the drain when the door is closed after opening.
Smart Images
Figure CN222773610U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of refrigerators, in particular to a negative pressure release structure and a refrigerator having the same. Background Art
[0002] The existing refrigerator insulation layer is formed by foaming and expanding isocyanate, cyclopentane, polyether polyol, etc. at a certain temperature. This foaming layer of the box has a good thermal insulation effect. The door seal on the door body has an airbag structure, which is attracted to the box body through a magnetic strip. The sealing effect is good when the door body is slightly deformed. As the refrigerator compressor and evaporator work, the temperature inside the box begins to drop, which plays a role in preserving food.
[0003] The temperatures of the refrigerator's refrigerator and freezer are different. The refrigerator's temperature is generally 2 to 8°C, and the freezer's temperature is generally -18 to -24°C. The room temperature is generally 25°C or above 38°C in summer. The temperature difference between the inside and outside is very different. According to the Bernoulli equation PV=nRT, the greater the temperature difference, the greater the pressure difference when the volume remains unchanged, causing the pressure difference between the inside and outside of the box to press the door tightly against the box, making it difficult for children, the elderly and other people with less strength to open the refrigerator door. After the refrigerator door is opened, a large amount of air rushes in instantly, and closing the door again compresses the air and squeezes it out from the refrigerator drain outlet in a short time, causing a whistling sound from the drain outlet. Utility Model Content
[0004] The purpose of the utility model is to provide a negative pressure release structure and a refrigerator having the same, aiming to solve at least one of the technical problems existing in the above-mentioned prior art. To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows:
[0005] In one aspect, a negative pressure release structure is provided, comprising:
[0006] An outer shell, wherein the outer shell has a cavity inside, an air inlet pipe connected to the cavity at the top of the outer shell, the air inlet pipe is connected to the external space of the refrigerator, and an air outlet pipe connected to the cavity at the bottom of the outer shell, the air outlet pipe is connected to the inside of the refrigerator;
[0007] An air pressure regulating cavity is provided, wherein the air pressure regulating cavity is fixedly arranged in the outer shell, a conical vent is provided at the top of the air pressure regulating cavity, and an air hole is provided at the bottom of the air pressure regulating cavity;
[0008] A light plastic float is placed in the air pressure regulating cavity, and the diameter of the light plastic float is larger than the diameter of the conical vent.
[0009] As a further solution of the utility model: the bottom of the air pressure regulating cavity is a flat plate, and a plurality of the air holes are evenly arranged on the flat plate.
[0010] As a further solution of the utility model: the air inlet pipe is connected to a connecting pipe, and the air outside the refrigerator enters the air pressure regulating cavity through the connecting pipe.
[0011] As a further solution of the utility model: the air outlet pipe is connected to a bent pipe, and the air inside the refrigerator enters the air pressure regulating cavity through the bent pipe.
[0012] On the other hand, a refrigerator is provided, wherein the door body of the refrigerator comprises a door shell surface and a door liner, a foaming layer is arranged between the door shell surface and the door liner, and the above-mentioned negative pressure release structure is fixedly embedded in the foaming layer.
[0013] The utility model has the following beneficial effects:
[0014] The utility model provides a negative pressure release structure, comprising an outer shell, an air pressure regulating cavity and a light plastic float. In a refrigerator having the negative pressure release structure, when the pressure in the refrigerator is reduced due to air cooling, the light plastic float is separated from the conical vent under the action of atmospheric pressure, and the air outside the refrigerator enters the cavity through the air inlet pipe, and enters the air pressure regulating cavity from the conical vent, and finally enters the refrigerator through the air hole arranged at the bottom of the air pressure regulating cavity, so that the pressure inside the refrigerator is increased; when the pressure inside and outside the refrigerator is balanced, the light plastic float returns to the conical port under the action of the air pressure inside the refrigerator; when the air pressure inside the refrigerator is greater than the external air pressure, the elastic light plastic float will press the conical vent to maintain the pressure inside the refrigerator, which is conducive to opening the refrigerator door, and the refrigerator door can be opened with less effort;
[0015] The structure is simple in shape and easy to process, without too many parts. It uses the air pressure difference inside and outside the refrigerator and the buoyancy of the lightweight plastic float to press the lightweight plastic float onto the conical vent or detach it from the conical vent to isolate or connect the air, thereby changing the pressure difference inside and outside the refrigerator. It cleverly uses simple physical laws to achieve convenience in life; at the same time, it solves the whistling sound of the drainage pipe after opening and closing the door. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The utility model is further described below in conjunction with the accompanying drawings.
[0017] Figure 1 This is a schematic diagram of the interior of a negative pressure release structure of the utility model;
[0018] Figure 2 is a side cross-sectional schematic diagram of a refrigerator having a negative pressure release structure;
[0019] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure in the middle.
[0020] In the figure: 1. outer shell; 11. cavity; 2. air inlet pipe; 3. air outlet pipe; 4. air pressure regulating cavity; 41. conical air vent; 42. air hole; 43. flat plate; 5. lightweight plastic float; 6. connecting pipe; 7. elbow; 8. door body. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation. Therefore, it should not be understood as a limitation on the present invention.
[0023] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0024] Embodiment 1
[0025] See also Figure 1-3 As shown, this embodiment provides a negative pressure release structure, including an outer shell 1, an air pressure regulating cavity 4 and a lightweight plastic float 5. Figure 1 As shown, the outer shell 1 has a cavity 11 inside, the top of the outer shell 1 is connected to an air inlet pipe 2 communicating with the cavity 11, and the bottom of the outer shell 1 is connected to an air outlet pipe 3 communicating with the cavity 11, see Figure 3 As shown, after the negative pressure release structure is installed on the door of the refrigerator, the air inlet pipe 2 is connected to the external space of the refrigerator, and the air outlet pipe 3 is connected to the inside of the refrigerator. The air pressure regulating chamber is fixedly arranged in the outer shell 1, and a conical vent 41 is provided on the top of the air pressure regulating chamber 4, and an air hole 42 is provided on the bottom of the air pressure regulating chamber 4; a light plastic float 5 is placed in the air pressure regulating chamber 4, and the diameter of the light plastic float 5 is larger than the diameter of the conical vent 41, and the light plastic float 5 is preferably a light and elastic plastic ball.
[0026] Working principle of negative pressure release structure: If the pressure in the refrigerator decreases due to air cooling, the lightweight plastic float 5 will be separated from the conical vent 41 (such as Figure 1 As shown in the figure, the air outside the refrigerator enters the cavity 11 through the air inlet pipe 2, and enters the air pressure regulating cavity 4 from the conical vent 41, and finally enters the refrigerator through the air hole 42 set at the bottom of the air pressure regulating cavity 4, so that the pressure inside the refrigerator increases; when the pressure inside and outside the refrigerator is balanced, the lightweight plastic float 5 returns to the conical port (as shown in the figure) under the action of the air pressure inside the refrigerator. Figure 3 As shown); when the air pressure in the refrigerator is greater than the external air pressure, the elastic lightweight plastic float 5 will compress the conical vent 41 to maintain the pressure in the refrigerator. In this state, it is convenient to open the refrigerator door 8, and the refrigerator door 8 can be opened with less effort; the problem of a large amount of air rushing into the refrigerator in a short time after opening and closing the door, and the air being squeezed out from the refrigerator drain outlet when the door is closed, thereby causing the whistling sound of the drain outlet.
[0027] For further information, see Figure 1 As shown, the bottom of the air pressure regulating cavity 4 is set as a flat plate 43, and a plurality of air holes 42 are evenly opened on the flat plate 43. When the lightweight plastic float 5 falls onto the flat plate 43, the lightweight plastic float 5 will not block all the air holes 42 on the flat plate 43, thereby ensuring that the air can smoothly flow into the interior of the refrigerator from the air holes 42.
[0028] For further information, see Figure 1 As shown, the air inlet pipe 2 is connected to a connecting pipe 6, and the air inlet of the connecting pipe 6 extends to the outside of the refrigerator, so that the air outside the refrigerator can smoothly enter the air pressure regulating cavity 4 through the connecting pipe 6. The air outlet pipe 3 is connected to a bent pipe 7, and the air outlet of the air outlet pipe 3 extends to the refrigerator, and the air inside the refrigerator can enter the air pressure regulating cavity 4 through the bent pipe 7, and at the same time, the air in the air pressure regulating cavity 4 can also smoothly enter the inside of the refrigerator through the bent pipe 7.
[0029] Embodiment 2
[0030] See also Figure 2 , Figure 3 As shown, this embodiment provides a refrigerator, wherein the door body 8 of the refrigerator includes a door shell surface and a door liner, a foaming layer is arranged between the door shell surface and the door liner, and a negative pressure release structure in the first embodiment is fixedly embedded in the foaming layer.
[0031] The refrigerator with a negative pressure release structure solves the problem that when the temperature difference and pressure difference between the inside and outside of the refrigerator are large, the refrigerator door 8 can be opened with less effort; it avoids a large amount of air rushing into the refrigerator in a short time after opening and closing the door, and the air is squeezed out from the refrigerator drain outlet when the door is closed, thereby causing a whistling sound from the drain outlet.
[0032] The above detailed description of the preferred embodiments of the utility model should not be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.
Claims
1. A negative pressure release structure, characterized in that: include: An outer shell (1), wherein the outer shell (1) has a cavity (11) inside, the top of the outer shell (1) is connected to an air inlet pipe (2) in communication with the cavity (11), the air inlet pipe (2) is in communication with the external space of the refrigerator, and the bottom of the outer shell (1) is connected to an air outlet pipe (3) in communication with the cavity (11), the air outlet pipe (3) is in communication with the interior of the refrigerator; An air pressure regulating cavity (4), the air pressure regulating cavity being fixedly arranged in the outer shell (1), the top of the air pressure regulating cavity (4) being provided with a conical vent (41), and the bottom of the air pressure regulating cavity (4) being provided with an air hole (42); A light plastic float (5), the light plastic float (5) is placed in the air pressure regulating cavity (4), and the diameter of the light plastic float (5) is greater than the diameter of the conical vent (41).
2. A negative pressure release structure according to claim 1, characterized in that: The bottom of the air pressure regulating cavity (4) is a flat plate (43), and a plurality of air holes (42) are evenly arranged on the flat plate (43).
3. A negative pressure release structure according to claim 1, characterized in that: The air inlet pipe (2) is connected to a connecting pipe (6), and the air outside the refrigerator enters the air pressure regulating cavity (4) through the connecting pipe (6).
4. A negative pressure release structure according to claim 1, characterized in that: The air outlet pipe (3) is connected to a bent pipe (7), and the air inside the refrigerator enters the air pressure regulating cavity (4) through the bent pipe (7).
5. A refrigerator, characterized in that: The door body (8) of the refrigerator comprises a door shell surface and a door liner, a foaming layer is arranged between the door shell surface and the door liner, and a negative pressure release structure according to any one of claims 1 to 4 is fixedly embedded in the foaming layer.