Motorized gas valve

Abstract

A motor adjusts gas valve, including linear stepper motor, valve body, valve cover, bottom cover plate, valve core seat piece, diaphragm, valve core and spring, ring seat is connected with the gas outlet end of intake cavity, valve core cavity extends into the intake cavity, bottom cover plate is buckled and sealed with the gas outlet cavity, valve core and valve core cavity are slidingly matched, spring post extends into the air guide hole, one end of spring extends into the air guide hole and is matched with the valve core, the other end is matched with the support of the bottom cover plate; The diaphragm is arranged in the counterbore of the suspended end of the intake cavity, the valve cover is buckled with the counterbore to fix the diaphragm, the linear stepper motor is arranged on the valve cover, the motor shaft extends into the cylindrical seat and is in contact with the connecting rod; The connecting rod is connected with the spring ring through the bottom plate of the cylindrical seat. The diaphragm separates the intake cavity and the linear stepper motor, effectively preventing the gas from entering the linear stepper motor and causing damage to the motor.

Description

Technical Field

[0001] This utility model relates to a gas valve for gas appliances, and more particularly to a motor-driven gas valve. Background Technology

[0002] The existing technology, Chinese patent 202220766635.2, describes a piston-type gas proportional regulating valve, which includes a gas inlet channel, a gas outlet channel, a gas passage chamber, a gas flow orifice, a motor mounting hole, and a gas proportional control motor. The main feature is that the motor shaft of the gas proportional control motor is positioned downwards, aligned between the top of the gas passage chamber and the top of the gas proportional control piston. A return spring and a gas proportional control piston are installed inside the gas passage chamber. The gas proportional control motor controls its motor shaft to extend downwards and push the gas proportional control piston down, increasing the proportion of gas flow obstruction in the gas flow orifice to reduce the gas flow. When the gas proportional control motor controls its motor shaft to retract upwards, the return spring rebounds, pushing the gas proportional control piston up to further reduce the proportion of gas flow obstruction in the gas flow orifice, thus increasing the gas flow. The gas proportional control piston and the gas proportional control motor are independently configured. The gas proportional control piston rises and falls without rotation, ensuring stability, eliminating rotational wear, preventing jamming during rise and fall, and preventing motor jamming, thus ensuring stable gas flow regulation. The problem is that gas may come into contact with or enter the gas proportional control motor, damaging it. Utility Model Content

[0003] The purpose of this utility model is to provide a motor regulating gas valve that isolates the gas from the linear stepper motor, preventing the gas from damaging the linear stepper motor.

[0004] This utility model is implemented as follows: a motor-controlled gas valve, characterized in that it includes a linear stepper motor, a valve body, a valve cover, a bottom cover plate, a valve core seat, a diaphragm, a valve core, and a spring. The valve body includes an inlet switch, a gas control unit, an inlet chamber and an outlet chamber located on the gas control unit, with the inlet chamber and the inlet switch connected; the outlet chamber is provided with an outlet port. The valve core seat includes a valve core cavity, an annular seat, a valve core seat disposed on the annular seat, an air guide hole, and an air inlet hole disposed on the valve core cavity; The diaphragm has a cylindrical seat with one end open at its center, and the bottom plate of the cylindrical seat has a connecting hole; The valve core includes a spring seat, an annular gas groove, a fixed seat, and a connecting rod; The annular seat is connected to the outlet end of the air inlet chamber, the valve core cavity extends into the air inlet chamber, the bottom cover plate is fastened and sealed to the outlet chamber, the valve core and the valve core cavity slide together, the spring column seat extends into the air guide hole, one end of the spring extends into the air guide hole and engages with the valve core, and the other end is supported by the bottom cover plate; the diaphragm is set in the countersunk hole at the suspended end of the air inlet chamber, the valve cover is fastened to the countersunk hole to fix the diaphragm, the linear stepper motor is set on the valve cover and the motor shaft extends into the cylindrical seat and engages with the connecting rod; the connecting rod passes through the bottom plate of the cylindrical seat and is connected to the spring retainer.

[0005] The electric motor regulating gas valve is characterized in that: the bottom plate of the countersunk hole is provided with an annular groove; The edge of the diaphragm is provided with an annular fixing seat, which is located within an annular groove.

[0006] The motor-controlled gas valve is characterized in that the diaphragm has an annular protrusion with a hollow center and an open end. The motor-controlled gas valve is characterized in that it also includes a gasket, which is located between the base plate of the cylindrical seat and the spring retainer.

[0007] The electric motor regulating gas valve is characterized in that: the annular seat of the valve core is provided with a head and a radial gas groove; The head is inserted into the air outlet of the air inlet chamber, and the annular seat fits snugly against the bottom cover plate.

[0008] The special feature of the motor-controlled gas valve is that the diaphragm is made of rubber material.

[0009] The special feature of the motor regulating gas valve is that the bottom cover plate is provided with a cover spring post seat, which extends into the spring.

[0010] This utility model discloses a motor regulating gas valve. The diaphragm design separates the air intake chamber from the linear stepper motor, effectively preventing gas from entering the linear stepper motor and causing damage to the motor. Attached Figure Description

[0011] Figure 1 This is a cross-sectional view of the present invention.

[0012] Figure 2 yes Figure 1 Enlarged view of part A in the middle.

[0013] Figure 3 This is a partial sectional view of the present invention.

[0014] Figure 4 This is one of the exploded perspective views of this utility model.

[0015] Figure 5 This is the second exploded perspective view of this utility model. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] like Figure 1 As shown, a motor-controlled gas valve includes a linear stepper motor 1, a valve body 2, a valve cover 3, a bottom cover plate 4, a valve core seat 5, a diaphragm 6, a valve core 7, and a spring 8. The valve body 2 includes an air inlet switch 21, a gas control unit, an air inlet chamber 22 and an air outlet chamber 23 provided on the gas control unit, the air inlet chamber 22 and the air inlet switch 21 are connected; the air outlet chamber 23 is provided with an air outlet interface 231; the air outlet end of the air inlet chamber 22 extends into the air outlet chamber 23. The valve core seat 5 includes a valve core cavity 51, an annular seat 52, a valve core seat 53 disposed on the annular seat 52, an air guide hole 54, and an air inlet hole 511 disposed on the valve core cavity 51. The diaphragm 6 has a cylindrical seat 61 with one end open at its center, and the bottom plate of the cylindrical seat 61 has a connecting hole. The valve core 7 includes a spring seat 71, an annular gas groove 72, a fixed seat 73, and a connecting rod 74; The annular seat 52 is connected to the outlet end of the air inlet chamber 22, the valve core chamber 51 extends into the air inlet chamber 22, and the air inlet hole 511 connects the air inlet chamber and the valve core chamber; the bottom cover plate 4 is fastened and sealed to the air outlet chamber 23, the valve core 7 is slidably engaged with the valve core chamber 51, the spring column seat 71 extends into the air guide hole 54, one end of the spring 8 extends into the air guide hole 54 and engages with the valve core, and the other end is supported and engaged with the bottom cover plate 4; the diaphragm 6 is located in the countersunk hole 221 at the suspended end of the air inlet chamber 22, and the valve cover 3 is fastened to the countersunk hole 221 to fix the diaphragm 6; the linear stepper motor 1 is located on the valve cover 3 and the motor shaft extends into the cylindrical seat 61 and engages with the connecting rod 74; the connecting rod 74 passes through the bottom plate of the cylindrical seat 61 and is connected to the spring retainer 9.

[0019] When this utility model is in use, the linear stepper motor 1 is powered on and the motor shaft rotates and moves in a straight line towards the valve core 7, driving the connecting rod 74 and the valve core 7 to move, and the diaphragm 6 moves with the valve core; at the same time, the valve core 7 compresses the spring 8; when the motor shaft returns, the valve core and diaphragm return under the action of the spring 8.

[0020] The bottom cover plate 4 is provided with a cover spring post 41, which extends into the spring 8.

[0021] As a further improvement of this utility model: the bottom plate of the countersunk hole 221 is provided with an annular groove 222; The edge of the diaphragm 6 is provided with an annular fixing seat 62, and the annular fixing seat 62 is in the annular groove 222; The diaphragm 6 is provided with a hollow annular protrusion 63 with an opening at one end; As a further improvement of this utility model, it also includes a gasket 10, which is disposed between the bottom plate of the cylindrical seat 61 and the spring retainer 9.

[0022] As a further improvement of this utility model: the annular seat 52 of the valve core seat 5 is provided with a head 521 and a radial air groove 522; The head 521 is inserted into the air outlet of the air inlet chamber 22, and the annular seat 52 is fitted with the bottom cover plate 4.

[0023] The diaphragm 6 is made of rubber material.

[0024] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A motor-controlled gas valve, characterized in that: Includes a linear stepper motor, valve body, valve cover, bottom cover plate, valve core seat, diaphragm, valve core, and spring. The valve body includes an inlet switch, a gas control unit, an inlet chamber and an outlet chamber located on the gas control unit, with the inlet chamber and the inlet switch connected; the outlet chamber is provided with an outlet port. The valve core seat includes a valve core cavity, an annular seat, a valve core seat disposed on the annular seat, an air guide hole, and an air inlet hole disposed on the valve core cavity; The diaphragm has a cylindrical seat with one end open at its center, and the bottom plate of the cylindrical seat has a connecting hole; The valve core includes a spring seat, an annular gas groove, a fixed seat, and a connecting rod; The annular seat is connected to the outlet end of the air inlet chamber, the valve core cavity extends into the air inlet chamber, the bottom cover plate is fastened and sealed to the outlet chamber, the valve core and the valve core cavity slide together, the spring column seat extends into the air guide hole, one end of the spring extends into the air guide hole and engages with the valve core, and the other end is supported by the bottom cover plate; the diaphragm is set in the countersunk hole at the suspended end of the air inlet chamber, the valve cover is fastened to the countersunk hole to fix the diaphragm, the linear stepper motor is set on the valve cover and the motor shaft extends into the cylindrical seat and engages with the connecting rod; the connecting rod passes through the bottom plate of the cylindrical seat and is connected to the spring retainer.

2. The motor-controlled gas valve according to claim 1, characterized in that: The bottom plate of the countersunk hole is provided with an annular groove; The edge of the diaphragm is provided with an annular fixing seat, which is located within an annular groove.

3. The motor-controlled gas valve according to claim 2, characterized in that: The diaphragm has an annular protrusion that is hollow and open at one end.

4. The motor-controlled gas valve according to claim 1, characterized in that: It also includes a gasket, which is located between the base plate of the cylindrical seat and the spring retainer.

5. A motor-controlled gas valve according to claim 1, characterized in that: The valve core seat has a head and a radial air groove on its annular seat; The head is inserted into the air outlet of the air inlet chamber, and the annular seat fits snugly against the bottom cover plate.

6. A motor-controlled gas valve according to claim 1, characterized in that: The bottom cover plate is provided with a cover spring post seat, which extends into the spring.

7. A motor-controlled gas valve according to claim 1, 2, 3, 4 or 5, characterized in that: The diaphragm is made of rubber material.

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