Refrigerator with internal and external air pressure balance

Abstract

The utility model relates to refrigerator technology field provides an inside and outside air pressure balance formula refrigerator, including door cover and cabinet, be equipped with sealing strip between door cover and cabinet, the cabinet mouth position of cabinet is equipped with air groove, and the opening position of air groove is equipped with air door, air groove sets up along the width direction of cabinet mouth, and passes from the below of sealing strip, the pressure column that door cover is movably worn is opposite air door, specific: pressure column moves down, and air door is opened, and the gas of both sides of sealing strip passes air groove and forms intercommunication, and pressure column resets, and air door closes air groove, and the both sides gas intercommunication of sealing strip is broken down. Therefore, the utility model discloses a cabinet mouth position is set up air groove across sealing strip, when opening door cover, air door is opened, and the partial area of sealing strip forms the gap, and the outside gas enters the cabinet, and the inside and outside air pressure difference is balanced, when closing door cover, air door closes air groove, and the cold quantity leakage is avoided. The utility model discloses a simple structure, and the difficulty of opening door of refrigerator is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of freezer technology, and in particular relates to a freezer with balanced internal and external air pressure. Background Technology

[0002] Because of the significant temperature difference between the inside and outside of a freezer, and the tight seal of the door, the air pressure inside the freezer is lower than the external atmospheric pressure, causing the door to press firmly against the freezer. This pressure difference makes it difficult to open the door.

[0003] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0004] To address the aforementioned shortcomings, this utility model primarily provides a refrigerator with balanced internal and external air pressure, solving the technical problem of difficulty in opening the door caused by the pressure difference between the inside and outside of the refrigerator.

[0005] To solve the above problems, this utility model provides an internal and external pressure balanced refrigerator, including a door cover and a cabinet body, wherein a sealing strip is provided between the door cover and the cabinet body;

[0006] The cabinet opening is provided with a ventilation slot, and the opening of the ventilation slot is provided with a valve; the ventilation slot is arranged along the width direction of the cabinet opening and passes under the sealing strip; a pressure post is movably inserted on the door cover, directly opposite the valve; specifically:

[0007] The pressure column moves downward, opening the valve, and the gas on both sides of the sealing strip is connected through the vent groove;

[0008] When the pressure column is reset, the valve closes the vent groove, blocking the gas connection between the two sides of the sealing strip.

[0009] According to the present invention, in a refrigerator with balanced internal and external air pressure, the ventilation groove is arranged perpendicular to the sealing strip.

[0010] According to the present invention, the internal and external air pressure balanced refrigerator has two valves, and the pressure column is directly opposite the docking part of the two valves.

[0011] According to the present invention, the internal and external pressure balanced freezer has a sealing layer at the joint of the two valves.

[0012] According to the present invention, in a refrigerator with balanced internal and external air pressure, the head of the pressure column is a spherical structure; the pressure column itself is a cylindrical structure.

[0013] According to the present invention, in a refrigerator with balanced internal and external air pressure, the valve is rotatably mounted on the inner wall of the ventilation groove via a door hinge; a torsion spring for resetting the valve is also connected to the door hinge.

[0014] According to the internal and external pressure balanced freezer of this utility model, a driving block is slidably provided inside the door cover, and a rotating plate is also rotatably provided; a rotation fulcrum is formed on the plate body of the rotating plate, and the two ends of the rotating plate are respectively connected to the driving block and the pressure column; specifically:

[0015] The drive block moves upward, the rotating plate rotates and drives the pressure column to move downward, opening the valve, and the gas on both sides of the sealing strip is connected through the vent groove;

[0016] The drive block moves down, the rotating plate rotates and drives the pressure column to reset, the valve closes the vent groove, and blocks the gas connection between the two sides of the sealing strip.

[0017] According to the present invention, the internal and external air pressure balanced refrigerator is further provided with a reset spring inside the door cover for pushing the drive block to move down.

[0018] According to the present invention, the external door cover of the refrigerator is provided with a handle, and the drive block is fixedly connected to the handle rod; the handle rod extends to the outside of the door cover and is provided on the handle.

[0019] According to the present invention, in a refrigerator with balanced internal and external air pressure, the pivot point is located at the center of the rotating plate or offset towards the drive block.

[0020] In summary, this invention features a venting groove that extends across the sealing strip at the cabinet opening. When the door is opened, the vent is pushed open, creating a gap in a portion of the sealing strip, allowing external air to enter the cabinet and balancing the pressure difference between the inside and outside. When the door is closed, the vent seals the venting groove, preventing cold air leakage. This invention, with its simple structure, reduces the difficulty of opening the freezer door. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 yes Figure 1 A schematic diagram of the structure of region A in one working state;

[0023] Figure 3 yes Figure 1 A schematic diagram of the structure of region A in one working state;

[0024] Figure 4 yes Figure 1 Schematic diagram of the counter opening in Area A;

[0025] Figure 5 yes Figure 4 A schematic diagram of the cross-sectional structure;

[0026] Figure 6 This is a schematic diagram of the structure of the pressure column of this utility model;

[0027] Figure 7 yes Figure 2 A schematic diagram of the structure in one working state in direction A;

[0028] Figure 8 yes Figure 2 A schematic diagram of the structure in one working state in direction A;

[0029] In the diagram: 1-Door cover, 11-Sealing strip, 12-Rotating plate, 13-Rotating fulcrum, 14-Drive block, 15-Handle rod; 2-Cabinet body, 21-Ventilation groove, 22-Valve, 23-Door hinge; 3-Pressure column, 31-Reset spring, 32-Column head. Detailed Implementation

[0030] See Figure 1 This utility model provides a refrigerator with balanced internal and external air pressure, including a door cover 1 and a cabinet body 2, see [link / reference]. Figure 2 A sealing strip 11 is provided between the door cover 1 and the cabinet body 2;

[0031] See Figure 4 and Figure 5 The cabinet body 2 has a ventilation groove 21 at its opening, and a valve 22 is provided at the opening of the ventilation groove 21. The ventilation groove 21 is arranged along the width of the cabinet opening and passes under the sealing strip 11. A pressure post 3 is movably inserted on the door cover 1, directly opposite the valve 22. Specifically:

[0032] Combination Figure 3 The pressure column 3 moves downward, opening the valve 22, and the gas on both sides of the sealing strip 11 is connected through the ventilation groove 21; balancing the pressure difference inside and outside the cabinet, making the door cover 1 easy to open.

[0033] When the pressure column 3 is reset, the valve 22 closes the ventilation groove 21, blocking the gas connection between the two sides of the sealing strip 11; thus preventing the leakage of cold air inside the cabinet.

[0034] This invention features a ventilation groove 21 extending across the sealing strip 11 at the cabinet opening. When the door 1 is opened, the valve 22 is pushed open, creating a gap in a localized area of ​​the sealing strip 11, allowing external air to enter the cabinet and balance the pressure difference between the inside and outside. When the door 1 is closed, the valve 22 seals the ventilation groove 21, preventing cold air leakage. This invention, with its simple structure, reduces the difficulty of opening the freezer.

[0035] As one embodiment, the venting groove 21 is arranged perpendicular to the sealing strip 11; the venting groove 21 achieves the balance of internal and external air pressure with a relatively short length.

[0036] Optionally, the ventilation groove 21 can also be set at an angle relative to the sealing strip 11, which is suitable for freezer products with a small cabinet opening width.

[0037] In one embodiment, there are two valves 22, and the pressure rod 3 is directly opposite the mating part of the two valves 22; this can reduce the depth of the venting groove 21, thereby reducing manufacturing difficulty and cost. Furthermore, both valves 22 have a sealing layer at their mating parts. After closing, the sealing layers of the two valves 22 are pressed together to seal the venting groove 21, preventing the loss of cold air.

[0038] In one embodiment, the valve 22 is rotatably mounted on the inner wall of the venting groove 21 via a valve shaft 23; a torsion spring is also connected to the valve shaft 23 for automatic reset after the valve 22 is opened.

[0039] Optionally, the two legs of the torsion spring abut against the inner walls of the valve 22 and the venting groove 21, respectively; when the valve 22 is opened, the torsion spring stores energy; after the pressure column 3 is reset, the torsion spring releases its elastic energy, causing the valve 22 to reset.

[0040] See Figure 6 As one embodiment, the head 32 of the pressure column 3 has a spherical structure, which reduces the contact area with the valve 22 and lowers the friction. Preferably, the pressure column 3 has a cylindrical structure, which facilitates processing, manufacturing, and installation.

[0041] See Figure 7 and Figure 8 In one embodiment, a drive block 14 is slidably provided inside the door cover 1, and a rotating plate 12 is also rotatably provided; a rotation fulcrum 13 is formed on the plate of the rotating plate 12, and the two ends of the rotating plate 12 are respectively connected to the drive block 14 and the pressure column 3; specifically:

[0042] The drive block 14 moves upward, the rotating plate 12 rotates and drives the pressure column 3 to move downward, opening the valve 22, and the gas on both sides of the sealing strip 11 forms a connection through the vent groove 21.

[0043] The drive block 14 moves down, the rotating plate 12 rotates and drives the pressure column 3 to reset, and the valve 22 closes the ventilation groove 21, blocking the gas communication between the two sides of the sealing strip 11.

[0044] Optionally, the rotating plate 12 is connected to the pressure column 3 and the drive block 14 by a rotating connection.

[0045] Even better, the connection between the rotating plate 12 and the driving block 14 is provided with an elongated hole; when the rotating plate 12 rotates, it moves laterally relative to the driving block 14, causing one side of the pressure column 3 to move vertically up and down.

[0046] Preferably, the pivot point 13 is located at the center of the rotating plate 12 or offset towards the drive block 14, so that the pressure column 3 has sufficient stroke.

[0047] As one embodiment, the door cover 1 is also provided with a return spring 31 for pushing the drive block 14 down; so that the drive block 14 can move down to the initial position, ensuring that the pressure column 3 disengages from the valve 22 and closes it completely, thus avoiding cold leakage.

[0048] As one embodiment, the door cover 1 is provided with a handle on the outside, and the drive block 14 is fixedly connected to the handle rod 15; the handle rod 15 extends to the outside of the door cover 1 and is set on the handle; when the door cover 1 is opened, the user holds the handle and at the same time applies pressure to the handle rod 15, so that the ventilation groove 21 is opened and the internal and external pressure is balanced; when the user opens the door cover 1, the air pressure difference between the inside and outside of the cabinet 2 is automatically balanced, without the need for deliberate operation, thus improving the user experience.

[0049] In summary, this invention provides a refrigerator with balanced internal and external air pressure. It utilizes a ventilation groove that spans the sealing strip at the refrigerator opening. When the door is opened, the valve opens, creating a gap in the sealing strip, allowing external air to enter and balance the internal and external air pressure difference. When the door is closed, the valve seals the ventilation groove, preventing cold air leakage. This invention, with its simple structure, reduces the difficulty of opening the refrigerator door.

[0050] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A refrigerator with balanced internal and external air pressure, characterized in that, Includes a door cover and a cabinet body, with a sealing strip provided between the door cover and the cabinet body; The cabinet opening is provided with a ventilation slot, and the opening of the ventilation slot is provided with a valve; the ventilation slot is arranged along the width direction of the cabinet opening and passes under the sealing strip; a pressure post is movably inserted on the door cover, directly opposite the valve; specifically: The pressure column moves downward, opening the valve, and the gas on both sides of the sealing strip is connected through the vent groove; When the pressure column is reset, the valve closes the vent groove, blocking the gas connection between the two sides of the sealing strip.

2. The internal and external pressure balanced freezer as described in claim 1, characterized in that, The ventilation groove is set perpendicular to the sealing strip.

3. The internal and external pressure balanced freezer as described in claim 1, characterized in that, There are two valves, and the pressure column is directly opposite the mating part of the two valves.

4. The internal and external pressure balanced freezer as described in claim 3, characterized in that, Both valves have a sealing layer at their mating points.

5. The internal and external pressure balanced freezer as described in claim 1, characterized in that, The head of the pressure column is spherical; the pressure column itself is cylindrical.

6. The internal and external pressure balanced freezer as described in claim 1, characterized in that, The valve is rotatably mounted on the inner wall of the venting groove via a valve shaft; a torsion spring for resetting the valve is also threaded through the valve shaft.

7. The internal and external pressure balanced freezer as described in any one of claims 1 to 6, characterized in that, The door cover is equipped with a sliding drive block and a rotating plate; a rotation fulcrum is formed on the plate, and the two ends of the rotating plate are respectively connected to the drive block and the pressure column; specifically: The drive block moves upward, the rotating plate rotates and drives the pressure column to move downward, opening the valve, and the gas on both sides of the sealing strip is connected through the vent groove; The drive block moves down, the rotating plate rotates and drives the pressure column to reset, the valve closes the vent groove, and blocks the gas connection between the two sides of the sealing strip.

8. The internal and external pressure balanced freezer as described in claim 7, characterized in that, The door cover is also equipped with a reset spring for pushing the drive block downward.

9. The internal and external pressure balanced freezer as described in claim 7, characterized in that, The door cover is provided with a handle on the outside, and the drive block is fixed to the handle rod; the handle rod extends to the outside of the door cover and is provided on the handle.

10. The internal and external pressure balanced freezer as described in claim 7, characterized in that, The pivot point is located at the center of the rotating plate or offset towards the drive block.

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