A hand and electrically controlled automatic switching oven valve

Abstract

The application discloses a kind of hand control and electric control automatic switching oven valve, including valve body, manual valve core, valve stem, valve cover, front cover, cam, ignition micro switch, pressing plate, electric control micro switch, micro motor and electric control valve core, valve body includes manual valve core cavity, gas outlet pipe, gas inlet interface, gas guide channel and electric control valve core cavity, manual valve core is arranged in manual valve core cavity, valve cover is engaged with manual valve core cavity, ignition micro switch and electric control micro switch are arranged on valve cover, cam is driven electric control micro switch along with valve stem rotation, and is slid along the axis of valve stem Fit;Valve stem moves back and forth, pressing plate drives ignition micro switch, and valve stem is rotationally engaged with pressing plate;Electric control valve core is arranged in electric control valve core cavity, micro motor is fixed with electric control valve core cavity end portion and drives electric control valve core.Hand control part and electric control part are automatically switched, hand control is from full conduction state, and electric control state is automatically controlled temperature;When hand control part controls, electric control part is in full conduction state.

Description

Technical Field

[0001] This invention relates to gas valves, and more particularly to an oven valve for use in ovens. Background Technology

[0002] The existing technology, according to Chinese invention patent application 202210933737.3, is a manual and electric combined gas valve, including a valve body, valve cover, switch knob, valve stem, switch valve core, push rod, spring, solenoid valve assembly, main flame valve core, main valve cover, and micro motor. The valve body includes an air inlet chamber, a solenoid valve mounting seat, a solenoid valve core seat, a front-opening switch valve core cavity, a pilot light pipeline, a lower-opening air guide chamber, a front-opening main flame valve core cavity, a main outlet chamber, and a cover plate. The solenoid valve mounting seat is opposite to the solenoid valve core seat, and the solenoid valve mounting seat, solenoid valve core seat, and switch valve core cavity are in a straight line. The switch valve core cavity is connected to the air guide chamber and the pilot light pipeline. The air guide chamber, main flame valve core cavity, and main outlet chamber are connected sequentially. The switch valve core includes a core part with one open end. The valve core includes a switch vent, a pilot flame vent, a receiving cavity, a guide hole on the partition, and a slot on the receiving cavity. The main ignition valve core comprises a cylindrical seat open at one end and a main core body open at the other end, with a gas flow regulating hole group on the main core body. The solenoid valve assembly is fixed on the solenoid valve mounting seat, the solenoid valve core mates with the solenoid valve core seat, the switch valve core is located in the switch valve core cavity, the push rod passes through the spring, the guide hole mates with the solenoid valve core, the valve stem rotatably engages with the valve stem channel of the valve cover, the valve stem drive plate corresponds to the slot, and the upper end of the push rod is embedded in the countersunk hole at the lower end of the valve stem. The cover plate covers and seals the venting cavity and the inlet cavity, the main ignition valve core is located in the main ignition valve core cavity, the micro motor is fixed on the main valve cover, the main valve cover is fastened to the cylindrical drive seat, and the micro motor drives the main ignition valve core. The problem is that the structure is complex and cannot achieve manual and electronic automatic switching. Summary of the Invention

[0003] The purpose of this invention is to provide an oven valve that automatically switches between manual and electric control, featuring both manual and electric switching and automatic control of gas.

[0004] This invention is implemented as follows: an oven valve that automatically switches between manual and electronic control, characterized in that it includes a valve body, a manual valve core, a valve stem, a valve cover, a front cover, a cam, an ignition micro switch, a pressure plate, an electronically controlled micro switch, a micro motor, and an electronically controlled valve core.

[0005] The oven valve that automatically switches between manual and electronic control is characterized in that: the air inlet is perpendicular to the manual valve core cavity, the air guide channel is perpendicular to the air inlet, the electronic valve core cavity is perpendicular to the manual valve core cavity, and the electronic valve core cavity and the air guide channel are parallel.

[0006] The oven valve that automatically switches between manual and electronic control is characterized in that: the cam includes a circular seat and a cam portion, and the circular seat is provided with an arc-shaped hole;

[0007] The valve stem is provided with an arc-shaped part, and the arc-shaped hole on the circular seat slides in conjunction with the arc-shaped part.

[0008] The oven valve that automatically switches between manual and electronic control is characterized in that: the pressure plate is provided with a rotating hole and a guide hole; the front cover is provided with a valve stem rotating hole and a guide rod;

[0009] The rotating hole is in rotational engagement with the valve stem, and the guide rod is in sliding engagement with the guide hole, allowing the pressure plate to move in a straight line.

[0010] The oven valve that automatically switches between manual and electric control is characterized in that: the electric cylindrical drive seat of the electric control valve core is provided with an axial groove;

[0011] It also includes a drive unit, which comprises a circular base plate and a drive rod.

[0012] The circular base plate is fixed to the shaft of the micro motor, and the drive rod is fitted into the axial groove.

[0013] The oven valve that automatically switches between manual and electric control is characterized in that: two limiting protrusions are provided at the end of the core cavity of the electric control valve;

[0014] The drive rod extends out of the axial groove and engages with the limiting protrusion.

[0015] This invention relates to an oven valve that automatically switches between manual and electric control. The manual and electric control parts automatically switch. In manual control mode, the valve is in a fully conductive state, while in electric control mode, the valve automatically controls the temperature. When the manual control is applied, the electric control part is in a fully conductive state. Attached Figure Description

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

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

[0018] Figure 3 yes Figure 1 B-B view.

[0019] Figure 4 This is a perspective view of the present invention.

[0020] Figure 5 This is one of the exploded perspective views of the present invention.

[0021] Figure 6 This is the second exploded perspective view of the present invention.

[0022] Figure 7 This is the third exploded perspective view of the present invention.

[0023] Figure 8 This is the fourth exploded perspective view of the present invention.

[0024] Figure 9 This is a three-dimensional sectional view of the valve body of the present invention.

[0025] Figure 10 This is a view of the present invention with the micro motor state removed.

[0026] Figure 11 This is a cross-sectional view of the manual valve core of the present invention.

[0027] Figure 12 This is a cross-sectional view of the electronically controlled valve core of the present invention. Detailed Implementation

[0028] Embodiments of the present invention 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 the present invention, and should not be construed as limiting the present invention.

[0029] like Figure 1 As shown, an oven valve that automatically switches between manual and electronic control includes a valve body 1, a manual valve core 2, a spring (not shown), a valve stem 3, a valve cover 4, a front cover 5, a cam 6, an ignition micro switch 72, a pressure plate 8, an electronic micro switch 71, a micro motor 9, and an electronic valve core 10.

[0030] The valve body 1 includes a manual valve core cavity 11, an air outlet pipe 12, an air inlet 13, an air guide channel 14, and an electrically controlled valve core cavity 15. The air inlet 13, the air guide channel 14, the electrically controlled valve core cavity 15, and the manual valve core cavity 11 are connected in sequence. The manual valve core cavity 11 is provided with a manual drive cavity 111 at the front open end and a manual radial air inlet 112 that cooperates with the gas hole group of the manual valve core. The manual radial air inlet 112 is connected to the electrically controlled valve core cavity. The open end of the electrically controlled valve core cavity 15 is provided with an electric drive cavity 152 and an electrically controlled air inlet 153 that is connected to the air guide channel. The electrically controlled air inlet 153 cooperates with the gas hole group on the electrically controlled valve core 10.

[0031] The manual valve core 2 includes a manual cylindrical drive seat 21, an inlet / outlet air chamber 22, and a gas port assembly provided on the inlet / outlet air chamber 22, such as Figure 11 As shown, the gas inlet group includes a large air inlet 231 and a small air inlet 232 with a gradually decreasing diameter. The small air inlet 231 includes a small diameter radial hole and a large diameter countersunk hole at the end. The manual cylindrical drive seat 21 is provided with a radial drive groove. The partition between the manual cylindrical drive seat 21 and the air inlet / outlet chamber 22 is provided with a spring seat hole.

[0032] The valve stem 3 includes a stem portion, a drive rod radially disposed at the driven end of the stem portion, and a spring seat hole. The spring engages with the spring seat hole of the valve stem 3 and the spring seat hole of the manual valve core 2.

[0033] The electrically controlled valve core 10 includes an electric cylindrical drive seat 101, an inlet / outlet air chamber 102, and a gas orifice group provided on the inlet / outlet air chamber; the gas orifice group includes a large air inlet and a small air inlet with a gradually decreasing diameter. The electrically controlled valve core 10 and the manual valve core 2 have the same structure.

[0034] The ignition micro switch 72 is preferably a spring-loaded pressure plate type, and the electronically controlled micro switch 71 is preferably a push-button type;

[0035] The manual valve core 2 is located in the manual valve core cavity 11, and the manual cylindrical drive seat 21 is located in the manual drive cavity 111. The driven end of the valve stem 3 is slidably engaged with the manual cylindrical drive seat 21, the drive rod and the radial drive groove. The valve cover 4 is fastened to the manual valve core cavity 11. The ignition micro switch 72 and the electric micro switch 71 are located on the valve cover 4. The cam 6 rotates with the valve stem 3 to drive the electric micro switch 71 and is slidably engaged along the axis of the valve stem 3. The valve stem 3 moves back and forth, and the pressure plate 8 drives the ignition micro switch 72 and the valve stem 3 is rotatably engaged with the pressure plate 8. The electric valve core 10 is located in the electric valve core cavity 15, and the electric cylindrical drive seat 101 is located in the electric drive cavity 152. The micro motor 9 is fixed to the end of the electric valve core cavity 15 and drives the electric valve core 10.

[0036] As a further improvement of the present invention: the air inlet 13 is perpendicular to the manual valve core cavity 11, the air guide channel 14 is perpendicular to the air inlet 13, the electric control valve core cavity 15 is perpendicular to the manual valve core cavity 11, and the electric control valve core cavity 15 and the air guide channel 14 are parallel. This structure is compact, facilitates demolding during die casting, and is convenient for machining.

[0037] The cam 6 includes a circular seat 61 and a cam portion 62, with the cam portion 62 surrounding the circular seat 61; the circular seat 61 is provided with an arc-shaped hole, that is, the hole on the circular seat 61 includes an arc-shaped cavity with a radius greater than 180 degrees and a planar cavity portion.

[0038] The valve stem 3 is provided with an arc-shaped portion 31, and the arc-shaped hole on the circular seat 61 slides in conjunction with the arc-shaped portion. With this structure, the cam 6 rotates with the valve stem 3 and moves along the axis of the valve stem 3;

[0039] As a further improvement of the present invention: the pressure plate 8 is provided with a circular rotating hole 81 and a guide hole 82; the front cover 5 is provided with a valve stem rotating hole 51 and a guide rod 52;

[0040] The rotating hole 81 is rotatably engaged with the valve stem 3. The valve stem 3 has an annular groove 32, and a retaining spring engages with the annular groove. The retaining spring also engages with the pressure plate 8. When the valve stem 3 moves toward the manual valve core 2, the pressure plate moves together and acts on the ignition micro switch. The guide rod 52 is slidably engaged with the guide hole 82, and the pressure plate 8 moves linearly. The valve stem 3 rotates relative to the pressure plate 8. The ignition micro switch 72 and the electronically controlled micro switch 71 operate simultaneously.

[0041] The electric cylindrical drive seat 101 of the electric control valve core 10 is provided with an axial groove 1011;

[0042] It also includes a drive component 16, which comprises a circular base plate 161 and a transmission rod 162.

[0043] The circular base plate 161 is fixed to the shaft of the micro motor 9, and the transmission rod 162 is engaged with the axial groove 1011.

[0044] As a further improvement of the present invention: two limiting protrusions 151 are provided in the electric drive cavity 152 of the electric control valve core cavity 15;

[0045] The transmission rod 162 extends out of the axial groove 1011 and engages with the limiting protrusion 151.

[0046] In a static state, such as Figure 2 As shown, the large air inlet 1021 of the electronically controlled valve core 10 is connected to the air guide channel 14, meaning that the electronic control part is in a fully conductive state; the manual valve core 2 closes the connecting hole between the electronically controlled valve core cavity 15 and the manual valve core cavity 11.

[0047] When using, such as Figure 4 As shown, when the valve stem 3 is pressed and rotated, the pressure plate 8 moves with the valve stem 3. The pressure plate 8 cooperates with the elastic pressure plate of the ignition micro switch 72. The valve stem 3 rotates the cam 6 to turn on the electronic micro switch 71. The valve stem 3 drives the manual valve core 2 to rotate 90 degrees. The large air inlet 231 of the manual valve core 2 is connected to the electronic valve core cavity 15, that is, the manual part is in a fully connected state. The gas enters the gas outlet pipe 12 through the gas inlet interface 13, the gas guide channel 14, the large air inlet 1021 of the electronic valve core 10, the electronic air inlet 153, the electronic valve core cavity 15, the manual radial air inlet 112, and the large air inlet 231 of the manual valve core 2, and supplies gas to the gas burner for combustion.

[0048] The temperature sensor on the gas oven transmits the temperature to the control board of the gas oven. According to the set program, it enters the automatic temperature control working state. In the automatic temperature control working state, the micro motor 9 drives the electric control valve core 10 to adjust the air intake. After ignition, it enters the automatic control state.

[0049] In automatic temperature control mode, continue to turn valve stem 3, and the small air inlet 232 of manual valve core 2 is connected to the electric control valve core cavity 15, that is, the small air inlet 232 is connected to the manual radial air inlet 112; then, micro motor 9 reverses, and the large air inlet 1021 of electric control valve core 10 is fully connected to the air guide channel 14, entering manual temperature control mode. Turn manual valve core 2 counterclockwise, and the small air inlet 232 and the electric control air inlet 153 are connected to the electric control valve core cavity 15 in sequence.

[0050] Although embodiments of the 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 invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A manually and electrically controlled automatically switched oven valve, characterized by: It includes valve body, manual valve core, valve stem, valve cover, front cover, cam, ignition micro switch, pressure plate, electric control micro switch, micro motor and electric control valve core, The valve body includes manual valve core cavity, air outlet pipe, air inlet interface, air guide channel and electric control valve core cavity, the air inlet interface, air guide channel, electric control valve core cavity, manual valve core cavity and air outlet pipe are sequentially communicated; The manual valve core includes manual cylindrical drive seat, air inlet and outlet cavity and gas hole group arranged on the air inlet and outlet cavity, The electric control valve core includes electric cylindrical drive seat, air inlet and outlet cavity and gas hole group arranged on the air inlet and outlet cavity; The manual valve core is arranged in the manual valve core cavity, the valve cover is buckled with the manual valve core cavity, the ignition micro switch and the electric control micro switch are arranged on the valve cover, the cam is driven to slide along the axis of the valve stem to drive the electric control micro switch when the cam rotates with the valve stem; the valve stem moves forward and backward, the pressure plate drives the ignition micro switch, and the valve stem is rotationally connected with the pressure plate; the electric control valve core is arranged in the electric control valve core cavity, the micro motor is fixed with the end of the electric control valve core cavity and drives the electric control valve core; In use, the valve stem is pressed and rotated, the pressure plate moves with the valve stem, the pressure plate is connected with the elastic pressing sheet of the ignition micro switch, the valve stem drives the cam to make the electric control micro switch conductive; the valve stem drives the manual valve core to rotate by 90 degrees, the large air inlet hole of the manual valve core is communicated with the electric control valve core cavity, that is, the manual control part is in full conduction state, the gas enters the air outlet pipe through the air inlet interface, the air guide channel, the large air inlet hole of the electric control valve core, the electric control air inlet hole, the electric control valve core cavity, the manual radial air inlet hole, the large air inlet hole of the manual valve core, and the gas supply gas burner is burned; The temperature sensor on the gas oven transmits the temperature to the control panel of the gas oven, enters the automatic temperature control working state according to the set program, the micro motor drives the electric control valve core in the automatic temperature control working state, adjusts the air inlet amount, and enters the automatic control state after ignition; In the automatic temperature control working state, continue to rotate the valve stem, the small air inlet hole of the manual valve core is communicated with the electric control valve core cavity, that is, the small air inlet hole is communicated with the manual radial air inlet hole; then, the micro motor is reversed, the large air inlet hole of the electric control valve core is in full communication state with the air guide channel, enters the manual temperature control state, rotates the manual valve core counterclockwise, and the small air inlet hole, the electric control air inlet hole are sequentially communicated with the electric control valve core cavity.

2. A manually and electrically controlled automatically switched oven valve according to claim 1, characterized in that: The air inlet interface is perpendicular to the manual valve core cavity, the air guide channel is perpendicular to the air inlet interface, and the electric control valve core cavity is perpendicular to the manual valve core cavity, and the electric control valve core cavity and the air guide channel are parallel.

3. A manually and electrically controlled automatically switched oven valve according to claim 1, characterized in that: The cam includes a circular seat and a cam part, and an arc-shaped hole is arranged on the circular seat; An arc-shaped part is arranged on the valve stem, and the arc-shaped hole on the circular seat is slidably connected with the arc-shaped part.

4. A manually and electrically controlled automatically switched oven valve according to claim 1, characterized in that: The pressure plate is provided with a rotating hole and a guide hole, and the front cover is provided with a valve stem rotating hole and a guide rod; The rotating hole is rotationally connected with the valve stem, and the guide rod is slidably connected with the guide hole, and the pressure plate moves along a straight line.

5. A manually and electrically controlled automatically switched oven valve according to claim 1, 2, 3 or 4, characterised in that: An axial groove is arranged on the electric cylindrical drive seat of the electric control valve core; Further comprising a driving member, the driving member includes a circular seat plate and a transmission rod, The circular seat plate is fixed with the shaft of the micro motor, and the transmission rod is embedded in the axial groove.

6. A manually and electrically controlled automatically switched oven valve according to claim 5, characterized in that: Two limiting protrusions are arranged in the end of the electric control valve core cavity; The transmission rod extends out of the axial groove and is connected with the limiting protrusions.

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