Gas balance valve suitable for airtight space

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By designing a gas balance valve in a confined space and utilizing the exhaust and intake components connected to the cylinder via the gas guide pipe, automatic pressure regulation is achieved, solving the problems of structural deformation and cold leakage/power consumption caused by the pressure difference between the inside and outside of the confined space, and improving airtightness and reliability.

CN222334593UActive Publication Date: 2025-01-10COFCO ENG TESTING & CERTIFICATION CO LTD

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Patent Information

Application Number: CN202421182429.2
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-05-28
Publication Date: 2025-01-10
Estimated Expiration: 2034-05-28

AI Technical Summary

Technical Problem

The pressure difference between the inside and outside of a sealed space causes structural deformation in cold storage facilities and makes them difficult to open. Existing gas balancing devices suffer from problems such as cold leakage, high power consumption, and poor airtightness.

Method used

A gas balance valve is designed, which is connected to the cylinder by a gas guide pipe. The gas passage is automatically adjusted by the exhaust and intake components when the pressure changes. Lightweight insulation materials and dustproof nets are used, and the valve relies on its own gravity to reset and achieve gas balance.

Benefits of technology

It effectively solves the structural deformation problem caused by the pressure difference between the inside and outside of a confined space, avoids cold leakage and power consumption, and improves airtightness and reliability.

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Abstract

The utility model discloses a gas balance valve suitable for an airtight space, which comprises a gas guide pipe, one end of the gas guide pipe penetrates through a warehouse body insulation board of the airtight space and partially extends into the airtight space; the cylinder body is communicated with the air guide pipe; the cylinder is provided with an exhaust end and an air suction end, the exhaust end of the cylinder is formed at the upper end of the cylinder, and the air suction end of the cylinder is formed at the lower end of the cylinder; an exhaust assembly is integrated in the exhaust end of the cylinder and controls the exhaust end of the cylinder to be opened and closed. An air suction assembly is integrated in the air suction end of the cylinder and controls opening and closing of the air suction end of the cylinder. The gas balance valve effectively overcomes the defects that an existing gas balance window is large in cold leakage, high in power consumption and difficult to install. The gas balance valve not only can be additionally arranged on places such as existing project refrigerators, air-conditioned stores and rooms without influencing normal production, but also can be used for being matched with new equipment to be provided for project application.

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Description

Technical Field

[0001] The utility model relates to the field of internal and external pressure balance of a closed space, in particular to a gas balancing valve suitable for cold storages, gas conditioning storages, rooms, boxes and containers with good airtightness. Background Art

[0002] When the cold storage drops from high temperature to low temperature, the indoor pressure will decrease due to the drop in air temperature. Since the cold storage is well sealed, the difference between the internal air pressure and the external atmospheric pressure may increase. This pressure difference may cause the cold storage insulation layer to collapse and deform, and may also make the cold storage door difficult to open.

[0003] According to the ideal gas state equation, in a well-sealed room, P1 / T1 = P2 / T2, and in a cold room where the initial indoor and external atmospheric pressures are balanced, when the temperature drops from T1 = -16°C to T2 = -20°C, the internal and external pressure difference △P = P2-P1 = 99748-101325 = -1577Pa. 2 , the pressure difference between the inside and outside of the door can generate 16 tons of force, which is enough to deform the warehouse. At this time, if there is a 1m*2m swing door, the pressure difference between the inside and outside reaches 322kg force. Even if there is no deformation, it is difficult for ordinary people to open it. Therefore, it is necessary to set up a gas balance device in this case.

[0004] Conventional balanced windows are mainly composed of automatically adjustable partitions (vertically installed) and springs. When there is a pressure difference between the inside and outside, the partition is pushed open by a force greater than the spring force, allowing indoor and outdoor gas to pass through. After reaching a balance, the partition is pressed back to its original position by the spring and closed. Usually, the partition and spring are made of metal, have no heat insulation effect, and have poor airtightness. Since they cannot completely block the passage of air, condensation and frost will form. Therefore, electric heating is generally set up at present, but because of poor airtightness, the air passing through will also condense and freeze on the low-temperature side of the cold room after a long time. In addition, the electric heating is powered on 24 hours a day, which is not conducive to energy saving.

[0005] Therefore, based on the above technical problems, technicians in this field urgently need to develop a gas balancing valve suitable for cold storage, gas conditioning storage, rooms, boxes and containers with good airtightness. Utility Model Content

[0006] The utility model aims to provide a gas balancing valve suitable for a closed space, which can block or connect the flow of air according to changes in indoor and outdoor pressures. The structure does not require a spring and can be reset and closed by its own gravity when the indoor and outdoor pressures are balanced. The structure is simple and the reliability is high.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] The utility model discloses a gas balancing valve suitable for a closed space, the gas balancing valve comprising:

[0009] An air duct, one end of which passes through the heat preservation board of the closed space and partially extends into the closed space; and

[0010] a cylinder body communicated with the air duct;

[0011] The cylinder has an exhaust end and an intake end, the exhaust end of the cylinder is formed at the upper end of the cylinder, and the intake end of the cylinder is formed at the lower end of the cylinder;

[0012] An exhaust component is integrated in the exhaust end of the cylinder, and the exhaust component controls the opening and closing of the exhaust end of the cylinder;

[0013] An air suction component is integrated in the air suction end of the cylinder, and the air suction component controls the opening and closing of the air suction end of the cylinder.

[0014] Furthermore, the air guide tube is connected to the middle position of the cylinder;

[0015] A heat-insulating sleeve is provided at the connection between the air guide pipe and the heat-insulating plate of the closed space.

[0016] Furthermore, the exhaust assembly comprises:

[0017] An exhaust side baffle connected to the inner wall of the exhaust end of the cylinder, wherein the exhaust side baffle is made of a lightweight heat-insulating material;

[0018] an exhaust nozzle connected to the exhaust side baffle; and

[0019] An exhaust nozzle air baffle movable in the exhaust nozzle;

[0020] The exhaust nozzle is divided into an exhaust nozzle lower cylinder connected to the exhaust side baffle, and an exhaust nozzle upper cylinder located at the upper end of the exhaust nozzle lower cylinder, the inner diameter of the exhaust nozzle upper cylinder is larger than the outer diameter of the exhaust nozzle lower cylinder, and the exhaust nozzle air baffle can move along the axial direction of the exhaust nozzle upper cylinder under the action of pressure changes;

[0021] Exhaust nozzle vents are provided on both sides of the exhaust nozzle upper cylinder.

[0022] Furthermore, an exhaust dust-proof net is provided at the exhaust end of the cylinder.

[0023] Furthermore, the air intake assembly comprises:

[0024] An air intake side baffle connected to the inner wall of the air intake end of the cylinder, wherein the air intake side baffle is made of a lightweight heat-insulating material;

[0025] an air suction nozzle connected to the air suction side baffle; and

[0026] An air suction nozzle air baffle movable in the air suction nozzle;

[0027] The air suction nozzle is divided into an air suction nozzle lower cylinder connected to the air suction side partition, and an air suction nozzle upper cylinder located at the upper end of the air suction nozzle lower cylinder, the inner diameter of the air suction nozzle upper cylinder is larger than the outer diameter of the air suction nozzle lower cylinder, and the air suction nozzle air baffle can move along the axial direction of the air suction nozzle upper cylinder under the action of pressure changes;

[0028] Air suction nozzle vents are provided on both sides of the upper cylinder of the air suction nozzle.

[0029] Furthermore, the air intake end of the cylinder is provided with an air intake side dustproof net.

[0030] Furthermore, the thickness of the exhaust nozzle air baffle plate and the intake nozzle air baffle plate are both 5 mm.

[0031] In the above technical solution, the utility model provides a gas balancing valve suitable for a closed space, which has the following beneficial effects:

[0032] The gas balance valve of the utility model effectively overcomes the shortcomings of existing gas balance windows, such as large cold leakage, high power consumption, and difficult installation. The gas balance valve of the application can be used to add existing cold storage, gas conditioning storage, rooms and other places without affecting normal production, and can also be used in projects with new equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. It is obvious that the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0034] Figure 1 The present invention is a schematic diagram of the structure of a gas balancing valve suitable for a closed space disclosed in an embodiment of the present utility model.

[0035] Description of reference numerals:

[0036] 10. Warehouse insulation board; 11. Insulation sleeve;

[0037] 1. Air guide tube; 2. Cylinder; 3. Exhaust assembly; 4. Intake assembly;

[0038] 301, exhaust side baffle; 302, exhaust nozzle; 303, exhaust nozzle vent; 304, exhaust nozzle air baffle; 305, exhaust side dust screen;

[0039] 401. Intake side baffle; 402. Intake nozzle; 403. Intake nozzle vent; 404. Intake nozzle air baffle; 405. Intake side dust screen. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0041] See also Figure 1 As shown;

[0042] A gas balancing valve suitable for a closed space in this embodiment includes:

[0043] An air duct 1, one end of which passes through a heat-insulating panel 10 of a closed space and partially extends into the closed space; and

[0044] A cylinder 2 connected to the airway tube 1;

[0045] The cylinder 2 has an exhaust end and an air intake end, the exhaust end of the cylinder 2 is formed at the upper end of the cylinder 2, and the air intake end of the cylinder 2 is formed at the lower end of the cylinder 2;

[0046] An exhaust component 3 is integrated in the exhaust end of the cylinder 2, and the exhaust component 3 controls the opening and closing of the exhaust end of the cylinder 2;

[0047] An air suction component 4 is integrated in the air suction end of the cylinder 2 , and the air suction component 4 controls the opening and closing of the air suction end of the cylinder 2 .

[0048] Specifically, the present embodiment discloses a gas balancing valve suitable for a confined space, which is connected to the confined space mainly through an air duct 1, and the air duct 1 is connected to a cylinder 2 placed outside the warehouse. The exhaust end of the cylinder 2 of the present embodiment is integrated with an exhaust component 3, and the intake end of the cylinder 2 is integrated with an intake component 4; and when the indoor pressure changes, the corresponding channels are opened through the exhaust component 3 and the intake component 4, thereby finally achieving the design purpose of balancing the indoor and outdoor pressures.

[0049] Preferably, the air guide tube 1 of this embodiment is connected to the middle position of the cylinder 2;

[0050] A heat-insulating sleeve 11 is provided at the connection between the air guide pipe 1 and the heat-insulating plate 10 of the closed space.

[0051] Preferably, the exhaust assembly 3 of this embodiment includes:

[0052] An exhaust side baffle plate 301 connected to the inner wall of the exhaust end of the cylinder 2, wherein the exhaust side baffle plate 301 is made of a light heat-insulating material;

[0053] An exhaust nozzle 302 connected to the exhaust side baffle 301; and

[0054] An exhaust nozzle air baffle 304 movable in the exhaust nozzle 302;

[0055] The exhaust nozzle 302 is divided into an exhaust nozzle lower cylinder connected to the exhaust side baffle, and an exhaust nozzle upper cylinder located at the upper end of the exhaust nozzle lower cylinder. The inner diameter of the exhaust nozzle upper cylinder is larger than the outer diameter of the exhaust nozzle lower cylinder. The exhaust nozzle air baffle 304 can move along the axial direction of the exhaust nozzle upper cylinder under the action of pressure changes.

[0056] Exhaust nozzle vents 303 are provided on both sides of the exhaust nozzle upper cylinder.

[0057] In addition, an exhaust dust-proof net 305 is provided at the exhaust end of the cylinder 2 of this embodiment.

[0058] Preferably, the air intake assembly 4 of this embodiment includes:

[0059] An air intake side baffle 401 connected to the inner wall of the air intake end of the cylinder 2, the material of the air intake side baffle 401 is a light heat-insulating material;

[0060] A suction nozzle 402 connected to the suction side partition 401; and

[0061] An air suction nozzle air barrier 404 movable in the air suction nozzle 402;

[0062] The air suction nozzle 402 is divided into an air suction nozzle lower cylinder connected to the air suction side partition 401, and an air suction nozzle upper cylinder located at the upper end of the air suction nozzle lower cylinder. The inner diameter of the air suction nozzle upper cylinder is larger than the outer diameter of the air suction nozzle lower cylinder. The air suction nozzle air baffle 404 can move along the axial direction of the air suction nozzle upper cylinder under the action of pressure changes.

[0063] Air vents 403 are provided on both sides of the upper cylinder of the air suction nozzle.

[0064] In addition, an air intake side dustproof net 405 is provided at the air intake end of the cylinder 2 of this embodiment.

[0065] As a preferred embodiment, the thickness of the exhaust nozzle air baffle 304 and the air intake nozzle air baffle 404 of this embodiment are both 5 mm, and the material of the air baffle of this embodiment can be selected from lightweight thermal insulation material, and according to the shape of the exhaust nozzle 302 and the air intake nozzle 402, a circular air baffle is used, and the contact surface needs to be flat and smooth to ensure good sealing.

[0066] In addition, the air duct 1 of this embodiment can be a non-combustible non-metallic or thin-walled stainless steel tube to prevent condensation or frost on the outside of the air duct 1 and to provide good insulation. When the temperature in the warehouse is low and there is a risk of frost, an electric heating wire can be added to the air duct 1.

[0067] The specific working principle of the gas balancing valve in this embodiment is:

[0068] 1. When the indoor air pressure is equal to the outdoor air pressure:

[0069] The exhaust nozzle air barrier 304 in the exhaust nozzle 302 covers the passage of the exhaust nozzle 302 by its own gravity, and gas cannot pass through the exhaust nozzle 302; at the same time, in this state, the suction nozzle air barrier 304 also covers the passage of the suction nozzle 302.

[0070] 2. When the indoor air pressure is higher than the outdoor air pressure:

[0071] The exhaust nozzle air barrier 304 of the exhaust nozzle 302 is pushed upward by the higher indoor air pressure, and the indoor gas is discharged to the outside through the exhaust nozzle 302. At this time, the suction nozzle air barrier 404 of the suction nozzle 402 covers the passage of the suction nozzle 402, and the gas cannot pass through it.

[0072] 3. When the indoor air pressure is lower than the outdoor air pressure:

[0073] The air inlet air barrier 404 of the air inlet nozzle 402 is pushed upward by the higher outdoor air pressure, and the outdoor air enters the room through the air inlet nozzle 402. At this time, the air inlet air barrier 304 of the exhaust nozzle 302 presses the passage of the exhaust nozzle 302, and the gas cannot pass through it.

[0074] In the above technical solution, the utility model provides a gas balancing valve suitable for a closed space, which has the following beneficial effects:

[0075] The gas balance valve of the utility model effectively overcomes the shortcomings of existing gas balance windows, such as large cold leakage, high power consumption, and difficult installation. The gas balance valve of the application can be used to add existing cold storage, gas conditioning storage, rooms and other places without affecting normal production, and can also be used in projects with new equipment.

[0076] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A gas balancing valve suitable for a closed space, characterized in that: The gas balancing valve includes: An air duct (1), one end of which passes through a heat-insulating panel (10) of a closed space and partially extends into the closed space; and A cylinder (2) connected to the air guide tube (1); The cylinder (2) has an exhaust end and an intake end, the exhaust end of the cylinder (2) is formed at the upper end of the cylinder (2), and the intake end of the cylinder (2) is formed at the lower end of the cylinder (2); An exhaust component (3) is integrated in the exhaust end of the cylinder (2), and the exhaust component (3) controls the opening and closing of the exhaust end of the cylinder (2); An air suction component (4) is integrated in the air suction end of the cylinder (2), and the air suction component (4) controls the opening and closing of the air suction end of the cylinder (2).

2. A gas balancing valve suitable for a closed space according to claim 1, characterized in that: The air guide tube (1) is connected to the middle position of the cylinder (2); A heat-insulating sleeve (11) is provided at the connection between the air guide pipe (1) and the heat-insulating plate (10) of the closed space.

3. A gas balancing valve suitable for a closed space according to claim 1, characterized in that: The exhaust assembly (3) comprises: An exhaust side baffle (301) connected to the inner wall of the exhaust end of the cylinder (2), wherein the exhaust side baffle (301) is made of a lightweight heat-insulating material; an exhaust nozzle (302) connected to the exhaust side baffle (301); and An exhaust nozzle air baffle (304) movable inside the exhaust nozzle (302); The exhaust nozzle (302) is divided into an exhaust nozzle lower cylinder connected to the exhaust side baffle (301), and an exhaust nozzle upper cylinder located at the upper end of the exhaust nozzle lower cylinder, the inner diameter of the exhaust nozzle upper cylinder is larger than the outer diameter of the exhaust nozzle lower cylinder, and the exhaust nozzle air baffle (304) can move along the axial direction of the exhaust nozzle upper cylinder under the action of pressure changes; Exhaust nozzle vents (303) are provided on both sides of the exhaust nozzle upper cylinder.

4. A gas balancing valve suitable for a closed space according to claim 3, characterized in that: An exhaust dust-proof net (305) is provided at the exhaust end of the cylinder (2).

5. A gas balancing valve suitable for a closed space according to claim 3, characterized in that: The air suction component (4) comprises: An air intake side baffle (401) connected to the inner wall of the air intake end of the cylinder (2), wherein the air intake side baffle (401) is made of a light heat-insulating material; an air suction nozzle (402) connected to the air suction side baffle (401); and An air suction nozzle air barrier (404) movable inside the air suction nozzle (402); The air suction nozzle (402) is divided into an air suction nozzle lower cylinder connected to the air suction side baffle, and an air suction nozzle upper cylinder located at the upper end of the air suction nozzle lower cylinder, the inner diameter of the air suction nozzle upper cylinder is larger than the outer diameter of the air suction nozzle lower cylinder, and the air suction nozzle air baffle (404) can move along the axial direction of the air suction nozzle upper cylinder under the action of pressure changes; Air suction nozzle vents (403) are provided on both sides of the upper cylinder of the air suction nozzle.

6. A gas balancing valve suitable for a closed space according to claim 5, characterized in that: The air intake end of the cylinder (2) is provided with an air intake side dustproof net (405).

7. A gas balancing valve suitable for a closed space according to claim 5, characterized in that: The thickness of the exhaust nozzle air baffle (304) and the suction nozzle air baffle (404) are both 5 mm.