Indoor air pressure automatic regulating valve

Abstract

The invention relates to an automatic indoor air pressure regulating valve, and belongs to the technical field of building ventilation equipment. The device is composed of a valve body made of a thermal resistance material, an air pressure driving assembly, a spring pre-compression regulator, a filtering module and a selectable sterilizing module. The device is technically characterized in that the inner body of the valve is automatically controlled to slide to open and close through air pressure difference to adapt to ventilation quantity. The valve body is made of high-heat-resistance high-molecular materials, and the heat bridge effect of the regulating valve is avoided. And the continuous adjustment of the opening and closing threshold within the range of 0.1-50Pa is realized by the threaded knob type adjuster. A UVC lamp tube (253.7 nm) and an ozone generator (0.05-0.1 ppm) can be selectively integrated, and three sterilization modes are supported; and the requirement for the air volume of 100-1000 m / h is met. The system is suitable for environments with ventilation requirements such as residences, factories, storage, medical treatment and laboratories, is particularly suitable for environments with energy-saving and heat-insulating requirements, and has self-adaptability, low-noise and efficient air treatment capacity.

Description

Technical Field

[0001] This pneumatic automatic regulating valve is applicable to the automatic regulation of the air pressure between the indoor space and the outdoor space or adjacent indoor spaces of a building, and can be applied to buildings with ventilation requirements such as residences, schools, laboratories, clean rooms, hospitals, workshops, warehouses, etc., or to ship cabins and transport vehicles, and is more suitable for enclosed spaces with ventilation and energy-saving requirements. Background Art

[0002] The pressure generated by the air pressure difference is used to push the inner body of the valve to move axially, so that the valve body can be opened or closed according to the set air pressure difference. Through the spring pre-compression regulator, the minimum air pressure difference for the valve to open is adjusted. A non-metallic high heat resistance material (thermal conductivity ≤ 0.025 W / (m·K)) is used, and the heat conduction of the valve body is reduced to meet the building energy-saving requirements, and it can achieve that there is no frosting or icing inside and outside the valve body with a temperature difference ≥ 30°C. A UV generator and an ozone generator are arranged in the cavity of the valve body to disinfect the air passing through the valve body, which is applicable to spaces with disinfection requirements. Summary of the Invention

[0003] The object of the invention is to provide an indoor air pressure regulating valve without power, self-adaptive opening and closing, and integrated disinfection function, so as to solve the technical problems in the prior art that the heat resistance of the ventilation device is low and does not meet the building energy-saving requirements, the automatic control device is complex and has high energy consumption, the adjustment accuracy is insufficient, and the air treatment function is single. Brief Description of the Drawings

[0004] Figure 1 is a schematic diagram of an indoor pneumatic automatic regulating valve and a single valve. Figure 1 It includes a valve body housing (1), an outer valve body (2), an inner valve body (3), a pneumatic drive assembly (4, 10), a spring pre-compression regulator (11), a two-stage filtration module (8, 9) and an integrated disinfection module (12, 13). Detailed Description of the Invention

[0005] 1. Valve body: The outer valve body (2) and the inner valve body (3) adopt a double-layer nested structure, and the material is made of high heat resistance such as polyurethane (thermal conductivity ≤ 0.025 W / (m·K)) to eliminate the thermal bridge effect.

[0006] 2. Pneumatic drive assembly: It includes an axially slidable inner valve body (2) and a pneumatic drive assembly (4, 10). When the internal and external pressure difference ≥ 0.1 Pa, the inner valve body slides axially along the housing (1) to open the ventilation channel, and its displacement ΔL and the pressure difference ΔP satisfy ΔL = k·ΔP (k is the elastic coefficient).

[0007] 3. Disinfection and sterilization module: A UVC lamp (12, wavelength 253.7nm ± 2nm) and a DBD ozone generator (13) are arranged in the valve body cavity (5). The ozone concentration is closed-loop controlled by a PID sensor to be 0.05 - 0.1 ppm. The disinfection and sterilization module can be used alone or in combination according to the requirements of the use environment.

[0008] 4. The automatic air pressure regulating valve can integrate multiple single valves, or a valve outer body nests multiple valve inner bodies, and the opening and closing actions of each valve inner body are controlled by a unified air pressure difference threshold to meet the large air volume ventilation requirements of ≥ 1000 m³ / h.

Claims

1. An automatic indoor air pressure regulating valve, characterized in that: include: (1) Valve body. The valve outer body and inner body are made of high-density, high-thermal resistance materials, and an air flow channel is provided inside. (2) Air pressure drive assembly. The valve inner body drives the automatic opening or closing of the valve through the indoor and outdoor air pressure difference, without the need for motors, fans and other power devices. (3) Spring pre-compression regulator. Connected to the air pressure drive assembly, it controls the valve by adjusting the spring pre-compression. When the indoor and outdoor air pressure difference is higher than the set value, the valve automatically opens. (4) Filter module. Installed at the inlet and outlet of the air flow channel, it is used to remove dust and filter the air entering the room. (5) Disinfection module. The ultraviolet and ozone generator is installed in the valve body cavity to disinfect the air entering the room.

2. The automatic indoor air pressure regulating valve according to claim 1, characterized in that: The valve body is made of high-density, high-thermal-resistance material, and the valve outer body and the valve inner body have sufficient rigidity to meet the requirements of the use environment, avoiding the use of metal parts to generate thermal bridges.

3. The automatic indoor air pressure regulating valve according to claim 1, characterized in that: The thermal conductivity of the valve body material is ≤0.025W / (m·K). When the valve body is closed, there is less heat conduction. The valve body size can be adjusted to meet the different energy-saving requirements of the building. When the temperature difference between indoor and outdoor is ≥30℃, there will be no frost or ice inside and outside the valve body.

4. The automatic indoor air pressure regulating valve according to claim 1, characterized in that: The air pressure drive component includes a slidable valve inner body. When the indoor and outdoor air pressure difference is greater than a set value, the valve inner body slides axially under the action of air pressure to form a gradually expanding air channel. Its sliding displacement is positively correlated with the air pressure difference, thereby realizing adaptive adjustment of ventilation volume.

5. The automatic indoor air pressure regulating valve according to claim 1, characterized in that: It also includes a spring and a compression regulator, which controls the minimum air pressure difference for opening the regulating valve by adjusting the spring and the compression amount.

6. The automatic indoor air pressure regulating valve according to claim 1, characterized in that: It also includes a disinfection component, which is integrated with the valve body and includes an ultraviolet generator, an ozone generator and a power interface.

7. The automatic indoor air pressure regulating valve according to claim 6, characterized in that: The ultraviolet generator adopts a UVC lamp tube with a wavelength of 253.7nm and is arranged in the valve body cavity.

8. The ozone generator generates ozone by high-pressure ionized air, and the ozone concentration is controlled within the range of 0.05~0.1ppm.

9. An automatic indoor air pressure regulating valve according to any one of claims 1 to 7, characterized in that: The automatic air pressure regulating valve can integrate multiple single valves to form a modular group by connecting multiple single valves in parallel or nesting multiple valve inner bodies and air pressure drive components in one valve outer body. The opening and closing actions of each single valve are controlled by a unified air pressure difference threshold to meet the large air volume ventilation demand of ≥1000m³ / h.

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