An automatic indoor air pressure regulating valve and regulating valve assembly

Abstract

An automatic indoor air pressure regulating valve and regulating valve assembly belong to the field of ventilation equipment technology. This invention aims to solve the problems of low thermal resistance in existing ventilation devices, which fail to meet building energy conservation requirements. The regulating valve includes a valve seat and a valve core. The outer shell is embedded in the wall, and the valve seat is located at the left end of the outer shell. The valve core is slidably disposed within the outer shell, and the left part of the valve core is a frustoconical sealing head. The valve seat has an inner hole adapted to the sealing head, which seals or opens the inner hole of the valve seat. Both the valve core and the valve seat are made of non-metallic high thermal resistance materials. When the sealing head seals the inner hole of the valve seat, the sealing head and the valve seat form a cylindrical heat insulation body. The right end of the valve core is connected to a reset assembly. Several through-hole air guide grooves are formed on the outer periphery of the valve core. The reset assembly applies a leftward closing force to the valve core. This invention's regulating valve requires no additional power source, is made of high thermal resistance materials, reduces heat conduction, and solves the problems of low thermal resistance in existing ventilation devices that fail to meet building energy conservation requirements.

Description

Technical Field

[0001] This invention belongs to the field of ventilation equipment technology, and particularly relates to an automatic indoor air pressure regulating valve and regulating valve assembly. Background Technology

[0002] Building ventilation is divided into natural ventilation and mechanical ventilation. Natural ventilation refers to the direct or purified exhaust of polluted indoor air to the outside, followed by the replenishment of fresh air, thereby maintaining the indoor air environment in accordance with hygiene standards.

[0003] Existing ventilation devices are mostly made of metal, which have high thermal conductivity and low thermal resistance, failing to meet building energy conservation requirements. They also have technical problems such as complex automatic control devices, high energy consumption, and insufficient adjustment accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic indoor air pressure regulating valve and valve assembly to solve the problems of existing ventilation devices, which are mostly metal devices with high thermal conductivity and low thermal resistance, failing to meet building energy conservation requirements. The technical solution adopted by this invention is as follows:

[0005] An indoor automatic air pressure regulating valve includes a housing, a valve seat, a valve core, and a reset assembly. The housing is cylindrical and extends through and is embedded in a wall. The left side of the wall is designated as a high-pressure environment, and the right side as a low-pressure environment. The valve seat is located at the left end of the housing, and the valve core is slidably disposed within the housing. The left part of the valve core is a frustoconical sealing head that gradually converges from right to left. The valve seat has an inner hole that matches the sealing head. The sealing head seals or opens the inner hole of the valve seat. Both the valve core and the valve seat are made of non-metallic high thermal resistance materials. When the sealing head seals the inner hole of the valve seat, the sealing head and the valve seat form a cylindrical heat insulation body. The right end of the valve core is connected to the reset assembly. Several through-holes are formed on the outer periphery of the valve core. The reset assembly applies a leftward closing force to the valve core.

[0006] Furthermore, the reset assembly includes a reset spring, a bracket, an adjusting screw, and a spring seat. The bracket is connected to the outer casing by screws. The bracket has several vent holes and a first adjusting nut. The adjusting screw is threadedly engaged with the first adjusting nut. The left end of the adjusting screw is connected to the spring seat, and the right end of the adjusting screw has a hexagonal prism structure. A countersunk hole is provided on the right end face of the valve core. The bottom of the countersunk hole abuts against the spring seat through the reset spring.

[0007] Furthermore, the reset assembly includes a swing arm, a counterweight, and a second adjusting nut. The swing arm is zigzag-shaped, with its middle part protruding upwards and hinged to the outer shell. The left end of the swing arm is provided with a contact ball that is tangential to and abuts against the right end face of the valve core. The right part of the swing arm is a stud structure that passes through the counterweight and is threadedly connected to the second adjusting nut.

[0008] Furthermore, a decorative cover is provided at the right end of the outer casing, and the decorative cover has ventilation holes.

[0009] Furthermore, the left end of the outer casing is provided with a rain cover, and the rain cover has a downward-facing air inlet.

[0010] Furthermore, a first filter screen is provided at the left end of the valve seat, and the first filter screen is located on the left side of the valve seat.

[0011] Furthermore, a second filter screen is provided at the right end of the outer casing, and the second filter screen is located to the right of the reset assembly.

[0012] The present invention also provides a regulating valve assembly, comprising a plurality of the above-mentioned indoor air pressure automatic regulating valves, wherein the plurality of regulating valves are arranged in parallel.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] The regulating valve of this invention utilizes the pressure generated by the air pressure difference to drive the valve core to move axially, thereby enabling the regulating valve to open or close according to the set air pressure difference. No additional power is required, and it automatically opens and closes. The outer shell, valve seat, and valve core are made of high thermal resistance materials to reduce heat conduction. This invention solves the technical problems in the prior art, such as low thermal resistance of ventilation devices that do not meet building energy conservation requirements, complex and energy-intensive automatic control devices, and insufficient regulation accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the regulating valve in the closed state according to Embodiment 1 of the present invention;

[0016] Figure 2 This is a schematic diagram of the regulating valve in the closed state according to Embodiment 2 of the present invention;

[0017] Figure 3 This is a schematic diagram of the valve in the open state of the regulating valve embedded in the wall according to Embodiment 1 of the present invention;

[0018] Figure 4 This is a schematic diagram of the regulating valve assembly according to Embodiment 3 of the present invention.

[0019] In the diagram, 1. Rain cover, 2. First filter screen, 3. Valve seat, 4. Housing, 5. Valve core, 6. Air guide groove, 7. Return spring, 8. Spring seat, 9. Screw, 10. Bracket, 11. First adjusting nut, 12. Second filter screen, 13. Decorative cover, 14. Adjusting screw, 15. Contact ball, 16. Swing arm, 17. Counterweight, 18. Second adjusting nut, 19. Wall, 20. Sealing head. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0021] The connections mentioned in this invention are divided into fixed connections and detachable connections. Fixed connections, also known as non-detachable connections, include but are not limited to conventional fixed connection methods such as folded connections, riveted connections, adhesive connections, and welded connections. Detachable connections include but are not limited to conventional disassembly methods such as bolted connections, snap-fit ​​connections, pin connections, and hinged connections. When a specific connection method is not explicitly defined, it is assumed that at least one existing connection method can be found to achieve this function, and those skilled in the art can choose according to their needs. For example, a welded connection can be chosen for fixed connections, and a bolted connection can be chosen for detachable connections.

[0022] The present invention will be further described in detail below with reference to the accompanying drawings. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0023] Example 1: As Figure 1 , Figure 3 As shown, an indoor air pressure automatic regulating valve includes a housing 4, a valve seat 3, a valve core 5, and a reset assembly. The housing 4 is cylindrical and extends through and is embedded in a wall 19. The left side of the wall 19 is designated as a high-pressure environment, and the right side as a low-pressure environment. The valve seat 3 is located at the left end of the housing 4. The valve core 5 is slidably disposed within the housing 4. The left part of the valve core 5 is a frustoconical sealing head 20, which gradually converges from right to left. The valve seat 3 has an inner hole adapted to the sealing head 20. The sealing head 20 seals or opens the inner hole of the valve seat 3. Specifically, when the valve core 5 slides to the left, the sealing head 20 slides into the inner hole of the valve seat 3 and abuts against the valve seat 3, i.e., the valve core 5 seals the valve seat 3, and the regulating valve closes. When the valve core 5 slides to the right and the sealing head 20 disengages from the inner hole of the valve seat 3, the valve core 5 opens the valve seat 3, and the regulating valve opens. Both the valve core 5 and the valve seat 3 are non-metallic high thermal resistance material components. When the sealing head 20 seals the inner hole of the valve seat 3, the sealing head 20 and the valve seat 3 form a cylindrical heat insulation body. The right end of the valve core 5 is connected to the reset assembly. Several air guide grooves 6 that pass through the valve core 5 are provided on the outer periphery. When the valve seat 3 is opened, an air flow channel is formed between the valve seat 3 and the valve core 5. The air flow in the high-pressure environment flows to the low-pressure area through the air flow channel and several air guide grooves 6 in sequence. After flowing through the reset assembly, it flows to the low-pressure environment from the right end of the outer shell 4. The reset assembly applies a leftward closing force to the valve core 5.

[0024] The reset assembly includes a reset spring 7, a bracket 10, an adjusting screw 14, and a spring seat 8. The bracket 10 is connected to the outer casing 4 via screws 9. The bracket 10 has several vent holes and a first adjusting nut 11. The adjusting screw 14 is threadedly engaged with the first adjusting nut 11. The left end of the adjusting screw 14 is connected to the spring seat 8, and the right end of the adjusting screw 14 has a hexagonal prism structure. The right end face of the valve core 5 has a countersunk hole, and the bottom of the countersunk hole abuts against the spring seat 8 via the reset spring 7.

[0025] The right end opening of the outer casing 4 is provided with a decorative cover 13, and the decorative cover 13 is provided with a vent hole.

[0026] The left end of the outer casing 4 is provided with a rain cover 1, and the rain cover 1 has a downward-facing air inlet.

[0027] A first filter screen 2 is provided at the left end of the valve seat 3, and the first filter screen 2 is located on the left side of the valve seat 3.

[0028] A second filter screen 12 is provided at the right end of the outer casing 4, and the second filter screen 12 is located on the right side of the reset assembly.

[0029] Both valve seat 3 and valve core 5 are made of high-density, high-thermal-resistance material with a thermal conductivity of ≤0.033W / (m·K), which has sufficient rigidity to meet the requirements of the operating environment and avoid the formation of thermal bridges. When the valve is closed, it can block the temperature balance on both sides of the wall and keep the room warm. Especially when the temperature difference between indoor and outdoor is ≥30℃, the valve body and the inside will not frost or ice.

[0030] The valve core 3 opens based on the pressure difference between the high-pressure environment and the low-pressure environment. When the pressure difference is greater than the valve closing force provided by the reset component, the regulating valve opens automatically. When the pressure difference is less than the valve closing force provided by the reset component, the regulating valve closes automatically. No motor, fan or other power device is required. The outdoor atmospheric pressure can be used as the high-pressure environment. When exhaust hoods or other ventilation devices are used indoors, a low-pressure environment can be formed indoors.

[0031] By rotating the hexagonal prism structure, the relative position of the adjusting screw 14 and the first adjusting nut 11 can be changed, thereby altering the preload of the return spring 7 to adapt to the pressure difference between high and low pressure environments. The hexagonal prism structure is located on the right side of the bracket 10 for easy rotation.

[0032] Figure 1 The diagram illustrates the closed state of the regulating valve when a reset component is applied. Figure 3The invention demonstrates the open state of the regulating valve when it is embedded in the wall 19. The regulating valve of this invention uses the pressure generated by the air pressure difference to push the valve core 5 to move axially, so that the regulating valve can open or close according to the set air pressure difference. No additional power is required, and it can open and close automatically. The outer shell 4, valve seat 3, and valve core 5 are made of high thermal resistance materials to reduce heat conduction. This solves the technical problems of low thermal resistance of ventilation devices that do not meet the requirements of building energy conservation, complex automatic control devices with high energy consumption, and insufficient adjustment accuracy in the prior art.

[0033] Example 2: Figure 2 As shown, this embodiment is described in conjunction with Embodiment 1. The difference between this embodiment and Embodiment 1 is that it provides another structure for the reset component. Specifically, the reset component includes a swing arm 16, a counterweight 17, and a second adjusting nut 18. The swing arm 16 is zigzag-shaped, with the middle part of the swing arm 16 protruding upward and hinged to the outer shell 4. The left end of the swing arm 16 is provided with a contact ball 15, which is tangential to and abuts against the right end face of the valve core 5. The right part of the swing arm 16 is a stud structure, which passes through the counterweight 17 and is threadedly connected to the second adjusting nut 18.

[0034] Figure 2 The diagram illustrates the closed state of the regulating valve when another reset assembly is applied. The counterweight 17 is subjected to a downward gravitational force, causing the swing arm 16 to be constantly subjected to a leftward rotating torque, which in turn applies a leftward closing force to the valve core 5 via the contact ball 15. By changing the relative position of the second adjusting nut 18 and the swing arm 16, the lever arm of the counterweight 17 can be adjusted, thereby changing the magnitude of the closing force.

[0035] Example 3: Figure 4 As shown, a regulating valve assembly includes several indoor air pressure automatic regulating valves as described in claim 2 or 3, wherein the several regulating valves are arranged in parallel.

[0036] Figure 4 The structure of the regulating valve group is shown. The regulating valve group consists of multiple independent regulating valves, which are arranged in parallel to form a modular group to meet the large air volume ventilation requirements of ≥1000m³ / h.

[0037] The above embodiments are merely illustrative examples of the present invention and do not limit its scope of protection. Those skilled in the art can make partial changes to them, as long as they do not exceed the spirit and essence of the present invention, they are all within the scope of protection of the present invention.

Claims

1. An indoor air pressure automatic regulating valve, characterized in that: The system includes a housing (4), a valve seat (3), a valve core (5), and a reset assembly. The housing (4) is cylindrical and extends through and is embedded in the wall (19). The left side of the wall (19) is designated as a high-pressure environment, and the right side as a low-pressure environment. The valve seat (3) is located at the left end of the housing (4). The valve core (5) is slidably disposed within the housing (4). The left part of the valve core (5) is a frustum-shaped sealing head (20), which gradually converges from right to left. The valve seat (3) is provided with... There is an inner hole that is adapted to the sealing head (20). The sealing head (20) seals or opens the inner hole of the valve seat (3). The valve core (5) and the valve seat (3) are both non-metallic high thermal resistance material components. When the sealing head (20) seals the inner hole of the valve seat (3), the sealing head (20) and the valve seat (3) form a cylindrical heat insulation body. The right end of the valve core (5) is connected to the reset assembly. Several air guide grooves (6) that run through the valve core (5) are opened on the outer periphery. The reset assembly applies a valve closing force to the left to the valve core (5).

2. The indoor air pressure automatic regulating valve according to claim 1, characterized in that: The reset assembly includes a reset spring (7), a bracket (10), an adjusting screw (14), and a spring seat (8). The bracket (10) is connected to the outer shell (4) by a screw (9). The bracket (10) has several vent holes. The bracket (10) has a first adjusting nut (11). The adjusting screw (14) is threadedly engaged with the first adjusting nut (11). The left end of the adjusting screw (14) is connected to the spring seat (8). The right end of the adjusting screw (14) is a hexagonal prism structure. The right end face of the valve core (5) has a countersunk hole. The bottom of the countersunk hole abuts against the spring seat (8) through the reset spring (7).

3. The indoor air pressure automatic regulating valve according to claim 1, characterized in that: The reset assembly includes a swing arm (16), a counterweight (17), and a second adjusting nut (18). The swing arm (16) is zigzag-shaped, with the middle part of the swing arm (16) protruding upward and hinged to the outer shell (4). The left end of the swing arm (16) is provided with a contact ball (15), which is tangential to the right end face of the valve core (5). The right part of the swing arm (16) is a stud structure, which passes through the counterweight (17) and is threadedly connected to the second adjusting nut (18).

4. An indoor air pressure automatic regulating valve according to claim 2 or 3, characterized in that: The right end opening of the outer shell (4) is provided with a decorative cover (13), and the decorative cover (13) is provided with a vent hole.

5. An indoor air pressure automatic regulating valve according to claim 2 or 3, characterized in that: The left end opening of the outer shell (4) is provided with a rain cover (1), and the rain cover (1) is provided with a downward-facing air inlet.

6. An indoor air pressure automatic regulating valve according to claim 2 or 3, characterized in that: The valve seat (3) is provided with a first filter screen (2) at the left end, and the first filter screen (2) is located on the left side of the valve seat (3).

7. An indoor air pressure automatic regulating valve according to claim 2 or 3, characterized in that: The right end of the outer casing (4) is provided with a second filter (12), which is located on the right side of the reset assembly.

8. A regulating valve assembly, characterized in that, It includes an indoor air pressure automatic regulating valve as described in claims 2 or 3, wherein the plurality of the regulating valves are arranged in parallel.

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