A gas valve for an oven

Abstract

A gas valve for an oven includes a valve stem, a valve cover, a valve body, a bottom cover, a transmission component, a valve core, a push rod, a push rod spring, a pressure plate, a micro switch, and a solenoid valve assembly. The valve core is located within the valve core cavity, and the solenoid valve assembly is located within the solenoid valve seat. The transmission component is located within the bottom cover, which is fastened and fixed to the air guide cavity. The driven plate and the lower end of the valve core are opposite each other. An angled drive rod extends into the solenoid valve seat through an air guide hole. The push rod passes through the push rod spring and the push rod guide hole, extending into the inlet and outlet sections and opposite the driven plate. A waist-shaped head passes through an annular seat plate and is held on the waist-shaped head by a nut. The waist-shaped head mates with the drive groove, and the upper end of the push rod extends into the push rod groove. The valve cover is fastened and fixed to the valve core cavity, and the pressure plate extends into the limiting cavity and mates with the micro switch. The valve cover has an upper limiting cavity, and the pressure plate is hidden, resulting in an integrated design. The included angle between the first and second air outlet pipes facilitates installation during use.

Description

Technical Field

[0001] This utility model relates to a gas oven, and more particularly to a gas valve. Background Technology

[0002] The existing technology, Chinese patent 201710497250.4, describes an improved gas valve with a pressure plate setting, including a valve body, valve cover, valve core, valve stem, push rod, pressure spring, transmission component, pressure plate, and micro switch. The valve body includes a valve core cavity, an air inlet, a solenoid valve, an inner air outlet pipe, and an outer air outlet pipe. The valve core includes an upper guide cavity and an air guide cavity, with a guide hole provided on the partition between the upper guide cavity and the air guide cavity, and a radial drive groove provided on the wall of the upper guide cavity. The valve cover includes a cover plate portion and a seat plate portion perpendicular to the cover plate portion, with a valve stem rotation hole on the cover plate portion. The pressure plate rotates and engages with the valve stem. The cover plate portion covers the opening of the valve core cavity and is fixedly connected to the valve body. The micro switch is fixed on the seat plate portion, and the pressure plate engages with the micro switch. The pressure plate and the cover plate portion are connected and engaged through a guide mechanism. The upper end of the push rod engages with the countersunk hole at the lower end of the valve stem. The problem is that the pressure plate is exposed, the included angle between the inner air outlet pipe and the outer air outlet pipe is small, and the space is small when applied to gas distribution control. Utility Model Content

[0003] The purpose of this utility model is to provide a gas valve for an oven, which features a concealed pressure plate and a large angle between the first and second gas outlet pipes.

[0004] This utility model is implemented as follows: a gas valve for an oven, characterized in that it includes a valve stem, valve cover, valve body, bottom cover, transmission component, valve core, push rod, push rod spring, pressure plate, micro switch, and solenoid valve assembly.

[0005] The valve stem is provided with an annular baffle, a waist-shaped head, and a top rod groove located in the waist-shaped head;

[0006] The valve cover includes a valve stem passage and a limiting cavity with a lower opening;

[0007] The valve body includes a valve core cavity with openings at the top and bottom, a solenoid valve seat and an air inlet, a lower-opening air guide cavity, a first air outlet pipe and a second air outlet pipe. The axis of the valve core cavity, the first air outlet pipe and the second air outlet pipe are in the same plane. One end of the air guide cavity is connected to the lower end of the valve core cavity, and the other end is connected to the solenoid valve seat through an air guide hole.

[0008] The transmission components include a driven plate, a shaft, and an angular drive rod; the pressure plate is provided with an annular seat plate;

[0009] The valve core includes a sleeve with a drive groove, an inlet and outlet section, and a push rod guide hole on the partition plate. The inlet and outlet section is provided with a first outlet hole group and a second outlet hole group.

[0010] The valve core is located inside the valve core cavity, and the solenoid valve assembly is located inside the solenoid valve seat. The transmission component is located inside the bottom cover, which is fastened and fixed to the air guide cavity. The driven plate and the lower end of the valve core are opposite each other. The angular drive rod extends into the solenoid valve seat through the air guide hole. The push rod passes through the push rod spring and the push rod guide hole and extends into the air inlet and outlet parts, and is opposite to the driven plate. The annular seat plate is held on the valve rod between the snap ring or nut and the annular baffle by a snap ring or nut. The waist-shaped head cooperates with the drive groove, and the upper end of the push rod extends into the push rod groove. The valve cover is fastened and fixed to the valve core cavity, and the pressure plate extends into the limiting cavity and cooperates with the micro switch.

[0011] The oven gas valve is characterized in that the first gas outlet group includes a large circular hole, a chordal gas guide groove and a small circular gas hole.

[0012] The gas valve for an oven is characterized in that the outlet end of the small circular air hole is provided with a countersunk hole.

[0013] The oven gas valve described above is characterized in that: the second gas outlet group includes an arc-shaped hole;

[0014] The oven gas valve described above is characterized in that: the bottom cover includes a shaft groove and a driven plate cavity;

[0015] The shaft and shaft groove are rotatably coupled, and the driven plate rotates within the driven plate cavity.

[0016] The oven gas valve described above is characterized in that: the sleeve of the valve core is provided with an annular spring seat plate.

[0017] It also includes a return spring, which mates with the annular spring seat plate and the annular seat plate of the pressure plate.

[0018] The oven gas valve is characterized in that: the valve cover further includes a stop block, a small arc-shaped protrusion, a large arc-shaped protrusion, a longitudinal baffle, and a longitudinal fitting groove on the wall panel, all provided on the top plate; the stop block is provided with a closing groove; the gaps between the stop block and the small arc-shaped protrusion, the small arc-shaped protrusion and the large arc-shaped protrusion, and the large arc-shaped protrusion and the longitudinal baffle respectively constitute the first stop, the second stop, and the third stop;

[0019] The upper opening end of the valve core cavity is provided with an interface;

[0020] It also includes stop components and limit components.

[0021] The stop component includes a circular base plate and a radial stop plate, and the circular base plate is provided with fixing holes;

[0022] The limiting component is arc-shaped and includes an arc-shaped seat at one lower end and an axial protrusion on the outer circumferential surface at the other end.

[0023] The upper end of the valve core cavity is supported by an axial protrusion and the interface is supported by an arc-shaped seat. The axial protrusion and the longitudinal fitting groove are fitted together. The circular base plate is located between the annular baffle and the annular seat plate of the valve stem and is fixed to the valve stem. In the closed state, the radial baffle plate and the closing groove are fitted together. When adjusting the gas flow, the radial baffle plate slides in the gap formed by the limiting member and the valve cover. The radial baffle plate is respectively engaged with the first baffle, the second baffle and the third baffle.

[0024] This utility model discloses a gas valve for an oven. Due to its structure, the valve cover has an upper limit cavity, the pressure plate is hidden, and it has an integral design. The included angle between the first gas outlet pipe and the second gas outlet pipe makes installation convenient during use. Attached Figure Description

[0025] Figure 1 This is a cross-sectional view of the present invention.

[0026] Figure 2 yes Figure 1 A-A view.

[0027] Figure 3 yes Figure 1 B-B view.

[0028] Figure 4 yes Figure 1 The C1-C1 view.

[0029] Figure 5 yes Figure 1 The C2-C3 views.

[0030] Figure 6 yes Figure 4 D-D view.

[0031] Figure 7 This is one of the exploded perspective views of this utility model.

[0032] Figure 8 This is the second exploded perspective view of this utility model. Detailed Implementation

[0033] 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.

[0034] 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.

[0035] like Figure 1 , Figure 2 As shown, a gas valve for an oven includes a valve stem 1, a valve cover 2, a valve body 3, a bottom cover 4, a transmission component 5, a valve core 6, a push rod 7, a push rod spring 8, a pressure plate 9, a micro switch 10, and a solenoid valve assembly 11.

[0036] The valve stem 1 is provided with an annular baffle 1A, a waist-shaped head 1B and a push rod groove 1C provided on the waist-shaped head 1B, with the annular baffle 1A and the waist-shaped head 1B being adjacent to each other;

[0037] Valve cover 2 includes valve stem channel 21 and a lower opening limiting cavity 22, the limiting cavity 22 being connected to valve cover 2;

[0038] The valve body 3 includes a valve core cavity 31 with openings at the top and bottom, an electromagnetic valve seat 32 and an air inlet 33, an air guide cavity 34 with openings at the bottom, a first air outlet pipe 351 and a second air outlet pipe 352. The axis of the valve core cavity 31, the first air outlet pipe 351 and the second air outlet pipe 352 are in the same plane. One end of the air guide cavity 34 is connected to the lower end of the valve core cavity 31, and the other end is connected to the electromagnetic valve seat 32 through an air guide hole 36. The air guide hole 36 includes a vertical part and a horizontal part. The vertical part is connected to the air guide cavity 34 and the horizontal part is connected to the electromagnetic valve seat.

[0039] The transmission component 5 includes a driven plate 51, a shaft 52, and an angular drive rod 53;

[0040] Pressure plate 9 is provided with an annular seat plate 91;

[0041] The valve core 6 includes a sleeve 61 with a drive groove, an air inlet / outlet section 62, and a top rod guide hole 63 provided on the partition plate. The air inlet / outlet section 62 is provided with a first air outlet group 621 and a second air outlet group 622, and the suspended end of the air inlet / outlet section 62 is open.

[0042] The push rod 7 is provided with a rod head 71, which is used to engage one end of the push rod spring 8;

[0043] The micro switch 10 is fixed to the valve body; the valve core 6 is located in the valve core cavity 31, and the solenoid valve assembly 11 is located in the solenoid valve seat 32; the transmission component 5 is located in the bottom cover 4, and the bottom cover 4 is fastened and fixed to the air guide cavity 34; the driven plate 51 and the lower end of the valve core 6 are opposite each other; the angled drive rod 53 extends into the solenoid valve seat 32 through the air guide hole 36; the push rod 7 passes through the push rod spring 8 and the push rod guide hole 63 and extends into the air inlet / outlet part 62 and is opposite to the driven plate 51; the waist-shaped head 1B passes through the annular seat plate 91 and is held on the waist-shaped head 1B by the nut, and the waist-shaped head 1B cooperates with the drive groove; the annular seat plate 91 is located between the annular baffle 1A and the nut, and the annular seat plate 91 and the waist-shaped head 1B are rotatably engaged and move up and down with the valve rod; the upper end of the push rod 7 extends into the push rod groove 1C; the valve cover 2 is fastened and fixed to the valve core cavity 31, and the pressure plate 9 extends into the limiting cavity 22 and cooperates with the micro switch 10.

[0044] like Figure 2 As shown, the first air outlet group 621 includes a large circular hole 6211, a chordally arranged air guide groove 6212, and a small circular air hole 6213, from which... Figure 2 It can be seen that the large circular hole 6211, the chord-shaped air guide groove 6212 and the small circular air hole 6213 are arranged in a clockwise direction.

[0045] The outlet end of the small circular vent 6213 is provided with a countersunk hole 6214.

[0046] like Figure 3 As shown, the second air outlet group 622 includes an arc-shaped hole.

[0047] As a further improvement to this utility model: such as Figure 6 , Figure 7 As shown, the bottom cover 4 includes a shaft groove 41, a driven plate cavity 42, and a clearance groove 43; the driven plate cavity 42 and the clearance groove 43 are respectively provided at both ends of the shaft groove 41.

[0048] The shaft 52 and shaft groove 41 are rotatably engaged, the driven plate 51 rotates in the driven plate cavity 42, and the angular drive rod corresponds to the clearance groove 43.

[0049] As a further improvement of this utility model: the sleeve 61 of the valve core 6 is provided with an annular spring seat plate 64.

[0050] It also includes a return spring 12, which cooperates with the annular spring seat plate 64 and the annular seat plate 91 of the pressure plate 9.

[0051] As a further improvement of this utility model: the valve cover 2 also includes a stop block 23, a small arc-shaped protrusion 241, a large arc-shaped protrusion 242, a longitudinal baffle 25 and a longitudinal fitting groove 26 on the wall plate, and the stop block 23 is provided with a closing groove 231; the gaps between the stop block 23 and the small arc-shaped protrusion 241, the small arc-shaped protrusion 241 and the large arc-shaped protrusion 242 and the large arc-shaped protrusion 242 and the longitudinal baffle 25 respectively form a first stop groove 271, a second stop groove 272 and a third stop groove 273;

[0052] The upper opening end of the valve core cavity 31 is provided with an interface 311;

[0053] It also includes a stop component 13 and a limit component 14.

[0054] The stop component 13 includes a circular base plate 131 and a radial stop plate 132. The circular base plate 131 is provided with a fixing hole, which is oblong in shape.

[0055] The limiting member 14 is arc-shaped and includes an arc-shaped seat 141 at one lower end and an axial protrusion 142 on the outer circumferential surface at the other end.

[0056] The upper end of the valve core cavity 31 is supported by an axial protrusion 142, and the interface 311 is supported by an arc-shaped seat. The axial protrusion 142 and the longitudinal fitting groove 26 are fitted together. The circular base plate 131 is located between the annular baffle 1A and the annular seat plate 91 of the valve stem 1 and is fixed to the valve stem 1. In the closed state, the radial baffle plate 132 and the closing groove 231 are fitted together. When adjusting the gas flow, the radial baffle plate 132 slides in the gap formed by the upper end of the limiting member 14 and the valve cover. The radial baffle plate 132 is respectively engaged with the first baffle groove, the second baffle groove and the third baffle.

[0057] With the limiting member 14 in place, the radial stop plate 132 slides above the limiting member 14. When the appliance is extinguished and the thermocouple cannot supply power to the solenoid valve assembly 11, the solenoid valve assembly 11 closes the gas guide passage 36. At this time, pressing the valve stem again will not allow it to move downwards along the axis; only after the obstruction is cleared will the valve stem rotate clockwise, allowing the radial stop plate to enter the closing groove before resuming operation. This improves safety performance.

[0058] When using this utility model, such as Figure 1 , Figure 3 , Figure 4 As shown, pressing valve stem 1 causes it to move downwards, and the pressure plate moves linearly downwards with the valve stem. The pressure plate drives the micro switch and the radial baffle plate 132 to leave the closing groove 231. Figure 4 As shown, the valve stem rotates 60 degrees counterclockwise. Figure 5When rotated clockwise, the radial stop plate 132 enters the first stop 271, and the first air outlet is in high-power mode; the valve stem then rotates 60 degrees to enter the second stop groove 272, and both the first and second air outlets are in high-power mode; then rotates 90 degrees to enter the third stop groove 273, and the first air outlet is in low-power mode and the second air outlet is in high-power mode.

[0059] 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 gas valve for an oven, characterized in that: This includes the valve stem, valve cover, valve body, bottom cover, transmission components, valve core, push rod, push rod spring, pressure plate, micro switch, and solenoid valve assembly. The valve stem is equipped with an annular baffle, a waist-shaped head, and a push rod groove; The valve cover includes a valve stem passage and a limiting chamber; The valve body includes a valve core cavity with openings at the top and bottom, a solenoid valve seat and an air inlet, a lower-opening air guide cavity, a first air outlet pipe and a second air outlet pipe. The axis of the valve core cavity, the first air outlet pipe and the second air outlet pipe are in the same plane. One end of the air guide cavity is connected to the lower end of the valve core cavity, and the other end is connected to the solenoid valve seat through an air guide hole. The transmission components include a driven plate, a shaft, and an angular drive rod; the pressure plate is provided with an annular seat plate; The valve core includes a sleeve with a drive groove, an inlet and outlet section, and a push rod guide hole on the partition plate. The inlet and outlet section is provided with a first outlet hole group and a second outlet hole group. The valve core is located inside the valve core cavity, and the solenoid valve assembly is located inside the solenoid valve seat. The transmission component is located inside the bottom cover, which is fastened and fixed to the air guide cavity. The driven plate and the lower end of the valve core are opposite each other. The angled drive rod extends into the solenoid valve seat through the air guide hole. The push rod passes through the push rod spring and the push rod guide hole and extends into the air inlet and outlet parts, and is opposite to the driven plate. The waist-shaped head passes through the annular seat plate and is held on the waist-shaped head by a nut. The waist-shaped head cooperates with the drive groove, and the upper end of the push rod extends into the push rod groove. The valve cover is fastened and fixed to the valve core cavity, and the pressure plate extends into the limiting cavity and cooperates with the micro switch.

2. The oven gas valve according to claim 1, characterized in that: The first air outlet group includes a large circular hole, a chordal air guide groove and a small circular air hole.

3. The oven gas valve according to claim 2, characterized in that: The outlet end of the small circular air hole is provided with a countersunk hole.

4. The oven gas valve according to claim 2, characterized in that: The second air outlet group includes an arc-shaped hole.

5. The oven gas valve according to claim 1, characterized in that: The bottom cover includes a shaft groove, a driven plate cavity, and a clearance groove; The shaft and shaft groove are rotatably coupled, the driven plate rotates in the driven plate cavity, and the angular drive rod corresponds to the clearance groove.

6. A gas valve for an oven according to claim 1, 2, 3, 4 or 5, characterized in that: The valve core sleeve is provided with an annular spring seat plate. It also includes a return spring, which mates with the annular spring seat plate and the annular seat plate of the pressure plate.

7. A gas valve for an oven according to claim 6, characterized in that: The valve cover also includes a stop block, a small arc-shaped protrusion, a large arc-shaped protrusion, a longitudinal baffle, and a longitudinal fitting groove on the wall plate, and the stop block is provided with a closing groove; the gaps between the stop block and the small arc-shaped protrusion, the small arc-shaped protrusion and the large arc-shaped protrusion, and the large arc-shaped protrusion and the longitudinal baffle respectively form the first stop groove, the second stop groove, and the third stop groove; The upper opening end of the valve core cavity is provided with an interface; It also includes stop components and limit components. The stop component includes a circular base plate and a radial stop plate, and the circular base plate is provided with fixing holes; The limiting component is arc-shaped and includes an arc-shaped seat at one lower end and an axial protrusion on the outer circumferential surface at the other end. The upper end of the valve core cavity is supported by an axial protrusion and the interface is supported by an arc-shaped seat. The axial protrusion and the longitudinal fitting groove are fitted together. The circular base plate is located between the annular baffle and the annular seat plate of the valve stem and is fixed to the valve stem. In the closed state, the radial baffle plate and the closing groove are fitted together. When adjusting the gas flow, the radial baffle plate slides in the gap formed by the limiting member and the valve cover. The radial baffle plate cooperates with the first baffle groove, the second baffle groove and the third baffle groove respectively.

Images