An electronically controlled gas valve

Abstract

An electrically controlled gas valve comprises a valve body, a valve cover, a stepper motor, a valve core and a pressure spring. The valve body comprises a cylindrical valve core cavity with an upper opening, an air inlet interface communicating with the valve core cavity and a first air outlet and a second air outlet arranged on a bottom plate of the valve core cavity. The valve cover is provided with an axial hole. The valve core is in a circular plate shape, and the valve core has a first valve core hole group and a second valve core hole group and a connecting seat. The valve core rotates and fits with the bottom plate of the valve core cavity and is sealed. The valve cover is buckled and sealed with the upper opening of the valve core cavity. The pressure spring cooperates with the valve cover and the valve core. The stepper motor is fixed on the valve body, the shaft of the stepper motor rotates and fits with the shaft hole and is sealed, and the shaft of the stepper motor is connected with the connecting seat. The valve body has a simple structure, the valve core is in a disc shape and is easy to process, the disc body rotates and fits with the bottom plate of the valve core cavity, and has good sealing performance.

Description

Technical Field

[0001] The invention relates to a gas burning appliance, in particular to a gas valve used for the burning appliance. Background Art

[0002] At present, the existing technology, the gas valve used in gas cookers or gas ovens or boxes, includes a valve body, a valve stem, and a valve core, which is realized by manually or by a stepper motor driving the valve stem. The problems are: complex structure, high cost, and inconvenient processing. Summary of the invention

[0003] The purpose of the present invention is to provide an electronically controlled gas valve which has the characteristics of simple structure, convenient processing and precise control.

[0004] The present invention is implemented as follows: an electrically controlled gas valve, which is special in that it includes a valve body, a valve cover, a stepper motor, a valve core and a pressure spring.

[0005] The valve body comprises a cylindrical valve core cavity with an upper opening, an air inlet interface communicating with the valve core cavity, and a first air outlet and a second air outlet arranged on a bottom plate of the valve core cavity.

[0006] The valve cover is provided with an axial hole, the valve core is in a circular plate shape, the valve core has a first valve core hole group and a second valve core hole group and a connecting seat;

[0007] The valve core and the bottom plate of the valve core cavity are rotationally matched and sealed, the valve cover and the upper opening of the valve core cavity are buckled and sealed, and the pressure spring is matched with the valve cover and the valve core; the stepper motor is fixed on the valve body, the shaft of the stepper motor and the shaft hole are rotationally matched and sealed, and the shaft of the stepper motor is connected to the connecting seat.

[0008] Preferably: the valve body is provided with an electric control cavity with an opening at one end, the air inlet interface is connected with the electric control cavity, and an electric control valve core seat is provided at the connection between the electric control cavity and the valve core cavity;

[0009] It also includes an electronically controlled valve core assembly.

[0010] The electric control valve core assembly is fixed to the valve body and closes the opening end of the electric control cavity, and the electric control valve core of the electric control valve core assembly is matched with the electric control valve core seat.

[0011] Preferably, the electric-controlled valve core assembly is an electromagnetic electric-controlled valve core assembly.

[0012] Preferably, there are two of each of the valve core chamber, valve cover, valve core, pressure spring and stepping motor.

[0013] Preferably: the first valve core hole group includes a plurality of first valve core holes arranged in an arc shape and having gradually decreasing apertures;

[0014] The second valve core hole group includes an arc-shaped hole and a circular hole.

[0015] The electric control gas valve of the present invention has a simple structure of the valve body due to the adoption of such a structure, the valve core is in a disc shape and is easy to process, the disc body and the bottom plate of the valve core cavity are rotatably matched, and the sealing performance is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the present invention.

[0017] Figure 2 yes Figure 1 A-A view of.

[0018] Figure 3 It is one of the three-dimensional exploded views of the present invention.

[0019] Figure 4 It is the second of the three-dimensional exploded diagrams of the present invention.

[0020] Figure 5 It is a planar exploded view of the present invention.

[0021] Figure 6 It is a perspective view of the present invention.

[0022] Figure 7 This is one of the matching processes of the valve core and the valve core cavity bottom plate of the present invention.

[0023] Figure 8 This is the second process of matching the valve core and the bottom plate of the valve core cavity of the present invention.

[0024] Fig. 9 This is the third step of the matching process between the valve core and the bottom plate of the valve core cavity of the present invention.

[0025] Fig.10 This is the fourth step of the matching process between the valve core and the bottom plate of the valve core cavity of the present invention.

[0026] Fig.11 It is one of the three-dimensional exploded views of the electric control valve core assembly of the present invention.

[0027] Fig.12 This is the second three-dimensional exploded view of the electric control valve core assembly of the present invention. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] like Figure 1 , Figure 2 As shown, an electrically controlled gas valve comprises a valve body 1, a valve cover 2, a stepper motor 3, a valve core 4 and a pressure spring 5.

[0030] The valve body 1 comprises a cylindrical valve core cavity 11 with an upper opening, an air inlet port 12 communicating with the valve core cavity, and a first air outlet hole 131 and a second air outlet hole 132 arranged on a bottom plate of the valve core cavity. The first air outlet hole 131 and the second air outlet hole 132 are on a diameter line.

[0031] The valve cover 2 is provided with an axial hole 21, the valve core 4 is in a circular plate shape, the valve core has a first valve core hole group 41 and a second valve core hole group 42 and a connecting seat 43;

[0032] The valve core 4 is rotatably matched with the bottom plate of the valve core chamber 11 and sealed, the valve cover 2 is buckled with the upper opening of the valve core chamber 11 and sealed, and the pressure spring 5 is matched with the valve cover 2 and the valve core 4; the stepper motor 3 is fixed on the valve body 1, the shaft of the stepper motor 3 is rotatably matched with the shaft hole 21 and sealed, and the shaft of the stepper motor 3 is connected to the connecting seat 43. The valve core chamber 11 and the valve core 4 adopt such a structure, which is simple in structure, easy to manufacture, and has high sealing performance.

[0033] like Figure 3 As shown, the first valve core hole group 41 includes a plurality of first valve core holes arranged in an arc shape with gradually decreasing apertures;

[0034] The second valve core hole group 42 includes an arc-shaped hole 421 and a circular hole 422;

[0035] like Figure 7 is a view of the present invention in a closed valve state; Figure 7 In this state, turn the valve core 4 counterclockwise. Figure 8 As shown, it is the maximum firepower state; Fig.10 It is the minimum fire state, only the circular hole 422 is connected to the second air outlet 132; when used in a gas cooker, the first air outlet is connected to the inner ejection pipe of the burner, and the second air outlet is connected to the outer ring ejection pipe. The first valve core hole assembly 41 and the second valve core hole assembly 42 can also adopt other forms to control the fire power, gradually increase or gradually decrease.

[0036] As a further improvement of the present invention: the valve body 1 is provided with an electric control chamber 14 with an opening at one end, the air inlet interface 12 is connected with the electric control chamber 14, an electric control valve core seat 15 is provided at the connection between the electric control chamber 14 and the valve core chamber 11, and the air guide hole on the electric control valve core seat 15 connects the electric control chamber 14 and the valve core chamber 11;

[0037] It also includes an electric control valve core component 6,

[0038] The electric control valve core assembly 6 is fixed to the valve body 1 and closes the open end of the electric control chamber 14, and the electric control valve core 6A of the electric control valve core assembly 6 cooperates with the electric control valve core seat 15;

[0039] The electric control valve core assembly 6 is an electromagnetic electric control valve core assembly. With such a technical solution, dual control is achieved, that is, the electric control valve core assembly 6 realizes on-off, and the valve core 4 realizes on-off and adjusts the firepower.

[0040] like Figure 2 The solenoid valve core assembly 6 includes a wire frame 61 made of plastic material, a coil 62, a tube body 63 with one end open and made of non-magnetic conductive material, a magnetic conductive plate 64, an iron core 65, two permanent magnets 66, a magnetic iron block 67, a pressure spring 68 and an electric control valve core 6A made of rubber material.

[0041] The wire frame 61 includes a bobbin 611, an upper seat 612 surrounding the upper end of the bobbin and a lower flange 613 surrounding the lower end of the bobbin. A clamping block 6111 is provided in the suspended end of the bobbin 611. A pair of end surfaces of the upper seat 612 are provided with a permanent magnet hole 6121 and a notch 6122. The lower flange 613 is provided with a shoulder 6131.

[0042] The open end of the tube body 63 is provided with a hexagonal portion 631 for the rotating tool to rotate, an external thread portion 632 and a countersunk hole 633 provided at the external thread portion, and the closed end is provided with an annular groove 634;

[0043] The iron core 65 includes a retaining ring groove 651 and a valve core seat 652;

[0044] The coil 62 is wound on the winding tube 611 between the upper seat 612 and the lower flange 613. The permanent magnet 66 is provided in the permanent magnet hole 6121. One end of the magnetic plate 64 is supported and matched with the step 6131, and the other end is embedded in the notch 6122 to seal the permanent magnet hole 6121. The tube 61 is inserted into the winding tube 611 and the block 6111 is embedded in the annular groove 634. The hexagonal part 631 is matched with the lower flange 613 to stop. The magnetic block 67 is fixed in the closed end of the tube 62. The retaining ring groove 651 of the iron core 65 is embedded with a retaining ring 69. The iron core 65 passes through the pressure spring 68 and is inserted into the tube 3. The pressure spring 68 is matched with the counterbore 633 and the retaining ring 69. The rubber valve core 6A is fixed to the valve core seat 652. Figure 2 As shown, the external threaded portion 632 is screwed with the internal thread of the open end of the electric control chamber 14, and the electric control valve core 6A cooperates with the electric control valve core seat 15. Under normal conditions, under the action of the pressure spring 68, the iron core 65 extends out of the tube body 63. After power is turned on, the iron core 65 moves toward the closed end of the tube body 63; the permanent magnet 66, the magnetic iron block 67 and the iron core 65 are attracted together, and after power is turned off, the valve is kept in the open state.

[0045] As a further improvement of the present invention: Figure 1 , Figure 3 , Figure 5As shown, there are two valve core chambers 11, valve cover 2, valve core 3, pressure spring 5, and stepper motor 3, respectively. As shown in FIG1 , in the embodiment, one electric control chamber 14 is connected to the valve core chamber 11 through an air guide channel 141 and an electric chamber valve core seat 15; one electric control chamber 14, an electric chamber valve core seat 15, and the valve core chamber 11 are connected in sequence. The air inlet port 12 is connected to the two electric control chambers 14.

[0046] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, which are also considered as the protection scope of the present invention.

Claims

1. An electronically controlled gas valve, characterized in that: It includes valve body, valve cover, stepper motor, valve core and pressure spring. The valve body comprises a cylindrical valve core cavity with an upper opening, an air inlet interface communicating with the valve core cavity, and a first air outlet and a second air outlet arranged on a bottom plate of the valve core cavity. The valve cover is provided with an axial hole, the valve core is in a circular plate shape, and the valve core is provided with a first valve core hole group, a second valve core hole group and a connecting seat; The valve core and the bottom plate of the valve core cavity are rotationally matched and sealed, the valve cover and the upper opening of the valve core cavity are buckled and sealed, and the pressure spring is matched with the valve cover and the valve core; the stepper motor is fixed on the valve body, the shaft of the stepper motor and the shaft hole are rotationally matched and sealed, and the shaft of the stepper motor is connected to the connecting seat; The valve body is provided with an electric control chamber with one end open, the air inlet interface is connected with the electric control chamber, and an electric control valve core seat is provided at the connection between the electric control chamber and the valve core chamber; It also includes an electronically controlled valve core assembly. The electric control valve core assembly is fixed to the valve body and closes the opening end of the electric control cavity, and the electric control valve core of the electric control valve core assembly cooperates with the electric control valve core seat; The electric control valve core assembly is an electromagnetic electric control valve core assembly; The valve core cavity, valve cover, valve core, pressure spring and stepper motor are respectively provided with two; The first valve core hole group includes a plurality of first valve core holes arranged in an arc shape and having gradually decreasing apertures; The second valve core hole group includes an arc-shaped hole and a circular hole; The first valve core hole group includes a plurality of first valve core holes arranged in an arc shape and having gradually decreasing apertures; The second valve core hole group includes an arc-shaped hole and a circular hole.

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