CN219102138U

CN219102138U - Temperature control valve for gas appliance

Info

Publication number: CN219102138U
Application number: CN202320069978.8U
Authority: CN
Inventors: 杨云峰
Original assignee: Changxing Burner Gas Appliance Co ltd
Current assignee: Changxing Burner Gas Appliance Co ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-05-30
Anticipated expiration: 2033-01-10

Abstract

The utility model provides a temperature control valve for a gas appliance, which comprises a shell, a base and a sealing ejector rod, wherein an air inlet hole and an air outlet hole are respectively arranged on the left side and the upper side of the shell, a gas channel which is communicated with the air inlet hole and the air outlet hole is arranged in the shell, the sealing ejector rod is arranged in the gas channel, a plug at the upper end of the sealing ejector rod is matched with the intersection of the air outlet hole and the gas channel, a sealing gasket is arranged on the plug, the lower end of the sealing ejector rod passes through a vertical perforation on the base and is arranged in a sealing nut, a sealing spring is sleeved outside the sealing ejector rod between the plug and the upper end of the base, and a nickel-titanium alloy spring is arranged outside the sealing ejector rod in the sealing nut through a clamp spring. The beneficial effects of the utility model are as follows: the temperature control valve can be conveniently installed at any position where temperature control is needed, and is not needed to be matched with a thermocouple for use; the ambient temperature is sensed mainly by the characteristics of the nickel-titanium alloy spring, so that the opening and closing of the gas inlet and outlet channels are realized.

Description

Temperature control valve for gas appliance

Technical Field

The utility model belongs to the technical field of gas valves, and particularly relates to a temperature control valve for a gas appliance.

Background

When the gas appliance is used, in order to prevent the damage of the parts of the gas appliance (for example, the temperature resistance of a plurality of parts is only 150 ℃), or the control local position can not exceed a certain temperature (for example, the periphery of a certain part can not exceed 80 ℃ to prevent accidental scalding), the operation is completed by serially connecting a bimetallic strip temperature controller and a thermocouple, the bimetallic strip temperature controller principle is that the contact sheets inside the bimetallic strip temperature controller are contacted by means of bimetallic according to the temperature action, so that the thermocouple connected with the bimetallic strip temperature controller in series is changed into a process of disconnection from open circuit, the temperature controller has short service life, high internal resistance requirement (certain low internal resistance) and small limitation caused by the fact that the bimetallic strip temperature controller is matched with the thermocouple.

Disclosure of Invention

The utility model aims to provide a temperature control valve of a gas appliance, which is mainly used for controlling the peripheral air temperature during combustion, can prevent the damage of parts of the gas appliance, and has long service life, convenient installation and wide application range.

The technical scheme of the utility model is as follows: the utility model provides a gas appliance temperature control valve, includes casing, base, sealed ejector pin, casing left side, upside be equipped with inlet port and venthole respectively, the casing in be equipped with the gas channel that all communicates with inlet port, venthole, casing lower extreme opening, and be equipped with the base through gland nut is fixed in the opening part, be equipped with sealed ejector pin in the gas channel, sealed ejector pin upper end plug and venthole and gas channel junction cooperation setting, and be equipped with sealing gasket on the plug, sealed ejector pin lower extreme pass the vertical perforation on the base, and establish in gland nut, the outside cover of sealed ejector pin that is located between plug and the base upper end is equipped with sealing spring, the sealed ejector pin outside that is located in the gland nut is equipped with nickel titanium alloy spring through the jump ring.

Preferably, the air inlet hole and the air outlet hole in the shell are not on the same horizontal line, and the air inlet hole is arranged below the air outlet hole.

Preferably, the opening at the lower end of the shell is provided with an annular groove matched with the annular convex edge at the lower end of the base, and the annular convex edge is clamped in the annular groove through a large O-shaped ring.

Preferably, the sealing ejector rod and the upper end of the vertical perforation of the base are sequentially provided with a sealing ring and a small O-shaped ring.

Preferably, one end of the nickel-titanium alloy spring is fixed at the lower end of the base, and the other end of the nickel-titanium alloy spring is fixed at the lower end of the sealing ejector rod positioned in the sealing nut through a clamping spring.

The utility model has the advantages and positive effects that: by adopting the technical scheme, the temperature control valve can be conveniently installed at any position (mainly controlling the peripheral air temperature during combustion) where the temperature needs to be controlled, does not need to be matched with a thermocouple for use, and has long service life, convenient installation and wide application range; the ambient temperature is sensed mainly by the characteristics of the nickel-titanium alloy spring, so that the opening and closing of the gas inlet and outlet channels are realized.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic view of the structure of the present utility model in the closed state.

In the figure:

1. casing 2, sealing gasket 3, sealing ejector rod

4. Sealing spring 5, sealing ring 6 and small O-ring

7. Base 8, large O-ring 9 and sealing nut

10. Nickel-titanium alloy spring 11, clamp spring 12 and air inlet hole

13. An air outlet hole 14 and a gas channel.

Detailed Description

As shown in fig. 1 and 2, the technical scheme of the utility model is that the temperature control valve for the gas appliance comprises a shell 1, a base 7 and a sealing ejector rod 3, wherein an air inlet hole 12 and an air outlet hole 13 are respectively arranged on the left side and the upper side of the shell 1, a gas channel 14 which is communicated with the air inlet hole 12 and the air outlet hole 13 is arranged in the shell 1, the lower end of the shell 1 is opened, the base 7 is fixedly arranged at the opening through a sealing nut 9, the sealing ejector rod 3 is arranged in a gas channel 15, a plug at the upper end of the sealing ejector rod 3 is matched with the intersection of the air outlet hole 13 and the gas channel 14, the plug just abuts against the intersection of the air outlet hole 13 and the gas channel 14, gas cannot be discharged through the air outlet hole 13, a sealing gasket 2 is arranged on the plug, the lower end of the sealing ejector rod 3 passes through a vertical perforation on the base 7 and is arranged in a sealing nut 9, a sealing spring 4 is sleeved outside the sealing ejector rod 3 which is positioned between the plug and the upper end of the base 7, a nickel titanium alloy spring 10 is arranged outside the sealing ejector rod 3 which is positioned in the sealing nut 9 through a clamping spring 11, and the nickel titanium alloy spring 10 can completely eliminate deformation of the nickel titanium alloy spring 10 after heating and the nickel alloy spring 10 after the nickel alloy is deformed and the nickel alloy is deformed completely under the condition of the temperature and the original shape is deformed after the deformation of the nickel alloy is completely.

In this embodiment, the air inlet 12 and the air outlet 13 in the housing 1 are not on the same horizontal line, and the air inlet 12 is below the air outlet 13.

In this embodiment, the opening of the lower end of the housing 1 is provided with an annular groove matched with the annular flange of the lower end of the base 7, and the annular flange is clamped in the annular groove through a large O-shaped ring 8.

In the embodiment, the sealing ejector rod 3 and the upper end of the vertical perforation of the base 7 are sequentially provided with a sealing ring 5 and a small O-shaped ring 6.

In the embodiment, one end of a nickel-titanium alloy spring 10 is fixed at the lower end of the base 7, and the other end of the nickel-titanium alloy spring is fixed at the lower end of the seal ejector rod 3 positioned in the seal nut 9 through a clamp spring 11.

The working process and principle of this example:

fig. 1 shows a normal working state, in which the nickel-titanium alloy spring 10 is in a normal state, and the spring force is greater than 4, and the valve is in an open state.

Fig. 2 shows that when the ambient temperature reaches the temperature of the nickel-titanium alloy spring 10, the nickel-titanium alloy spring 10 contracts, and at the moment, the sealing spring 4 jacks up the sealing ejector rod 3, the sealing gasket 2 seals the shell 1, the gas path is cut off, and the gas appliance is closed;

when the temperature is lower than the set temperature of the nickel-titanium alloy spring 10, the nickel-titanium alloy spring 10 is sprung, the spring force is greater than 4, and the state of the nickel-titanium alloy spring is restored to the state of fig. 1.

The foregoing describes one embodiment of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.

Claims

1. A gas appliance temperature control valve, characterized in that: the gas-saving device comprises a shell, a base and a sealing ejector rod, wherein an air inlet hole and an air outlet hole are respectively formed in the left side and the upper side of the shell, a gas channel which is communicated with the air inlet hole and the air outlet hole is formed in the shell, the lower end of the shell is opened, the base is fixedly arranged at the opening through a sealing nut, the sealing ejector rod is arranged in the gas channel, a plug at the upper end of the sealing ejector rod is matched with the intersection of the air outlet hole and the gas channel, a sealing gasket is arranged on the plug, the lower end of the sealing ejector rod penetrates through a vertical perforation on the base, the sealing nut is arranged in the sealing nut, a sealing spring is sleeved outside the sealing ejector rod between the plug and the upper end of the base, and a nickel-titanium alloy spring is arranged outside the sealing ejector rod in the sealing nut through a clamp spring.

2. A gas appliance temperature control valve according to claim 1, wherein: the air inlet and the air outlet in the shell are not on the same horizontal line, and the air inlet is arranged below the air outlet.

3. A gas appliance temperature control valve according to claim 1, wherein: the opening of the lower end of the shell is provided with an annular groove matched with the annular convex edge of the lower end of the base, and the annular convex edge is clamped in the annular groove through a large O-shaped ring.

4. A gas appliance temperature control valve according to claim 1, wherein: the sealing ejector rod and the upper end of the vertical perforation of the base are sequentially provided with a sealing ring and a small O-shaped ring.

5. A gas appliance temperature control valve according to claim 1, wherein: one end of the nickel-titanium alloy spring is fixed at the lower end of the base, and the other end of the nickel-titanium alloy spring is fixed at the lower end of the sealing ejector rod positioned in the sealing nut through a clamp spring.