Gas regulating valve and combustion device

Abstract

The present invention relates to a gas regulating valve and a combustion device. When it is necessary to work in a state of low-fire combustion, a first solenoid valve controls a first movable iron core to move and open a first vent, and external gas enters into a first chamber through an air inlet and enters into a first air duct through the first vent. A second solenoid valve controls a second movable iron core to move and open a mouth of a first recess, and gas in the first air duct enters into a second chamber and can enter into a fourth chamber through the first recess and an air hole. Gas in the fourth chamber is output to the outside through an inner-ring fire air supply port. At the same time, a first valve assembly seals the second air vent, and a second valve assembly seals the third vent. In this way, there is no gas supply to the outer-ring fire air supply port, and only gas in the second chamber enters into the fourth chamber through the air hole. Accurate control of low-fire combustion can be achieved, and the low-fire combustion effect is relatively stable.

Description

Technical Field

[0001] The present invention relates to the technical field of combustion devices, and in particular to a gas regulating valve and a combustion device. Background Art

[0002] With the improvement of living standards and the rapid development of science and technology, combustion devices have begun to appear in people's lives on a large scale. Traditional combustion devices include stoves, gas water heaters or boilers, etc., which will not be described in detail here, and the combustion device will be mainly explained by taking the stove as an example.

[0003] The control accuracy of the proportional valve of traditional stoves is not high, mainly because the required valve opening is small when the minimum fire gear is in operation, and the proportional valve cannot be accurately controlled. The gas regulating valve of existing stoves on the market usually includes a main stop valve set on the main circuit, and the main stop valve is used to control the on and off of the gas flow on the main circuit. The gas regulating valve also includes an outer ring stop valve and a proportional valve. During the operation of the stove, if the minimum fire gear needs to be adjusted, the main stop valve is kept open and the outer ring stop valve is closed. The minimum fire gear is achieved by adjusting the opening of the proportional valve. However, the control accuracy of the proportional valve opening is not high when adjusting the gas flow in a small range, so it cannot be accurately controlled. Summary of the invention

[0004] The first technical problem solved by the present invention is to provide a gas regulating valve which can effectively and accurately control the gas flow in a small range.

[0005] The second technical problem solved by the present invention is to provide a combustion device which can effectively and precisely control the gas flow in a small range.

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] A gas regulating valve, the gas regulating valve comprising: a valve body, wherein a first air passage, a first chamber, a second chamber, a third chamber and a fourth chamber are provided in the valve body, a first air vent connected to the first air passage, a first mounting port opposite to the first air vent and an air inlet for introducing gas are provided on the cavity wall of the first chamber; the second chamber is connected to the first air passage, a first recess is provided on the cavity wall of the second chamber, an air hole connected to the fourth chamber is provided on the bottom wall of the first recess, and a second mounting port opposite to the first recess is also provided on the cavity wall of the second chamber; a second air vent connected to the first air passage and a third air vent connected to the fourth chamber are provided on the cavity wall of the third chamber, an outer ring fire air supply port is also provided on the cavity wall of the third chamber, and an inner ring fire air supply port is provided on the cavity wall of the fourth chamber;

[0008] a first solenoid valve, the first solenoid valve being mounted on the valve body, the first solenoid valve comprising a first movable iron core, the first movable iron core extending into the first chamber through the first mounting opening and being movable in the first chamber, the first movable iron core being used to seal or open the first vent;

[0009] a second solenoid valve, the second solenoid valve being mounted on the valve body, the second solenoid valve comprising a second movable iron core, the second movable iron core extending into the second chamber through the second mounting opening and being movable in the second chamber, the second movable iron core being used to seal or open the mouth of the first recess;

[0010] A third solenoid valve, a first valve assembly and a second valve assembly, the third solenoid valve is installed on the valve body, the third solenoid valve is used to drive the first valve assembly to move in the first airway, the first valve assembly is used to seal or open the second air vent, the first valve assembly can drive the second valve assembly to move when it moves, the second valve assembly can move in the third chamber, the second valve assembly is used to seal or open the third air vent, when the first valve assembly seals the second air vent, the second valve assembly seals the third air vent, when the first valve assembly opens the second air vent, it synchronously drives the second valve assembly to open the third air vent.

[0011] The gas regulating valve of the present invention has the following beneficial effects compared with the background technology:

[0012] The above-mentioned gas regulating valve, when it is necessary to work in a high-fire state, the first solenoid valve controls the first movable iron core to move and open the first air vent, and the external gas enters the first chamber through the air inlet and enters the first air duct through the first air vent, the second solenoid valve controls the second movable iron core to move and open the mouth of the first recess, the gas in the first air duct enters the second chamber and can enter the fourth chamber through the first recess and the air hole, the gas in the fourth chamber is output to the outside through the inner ring fire air supply port, at the same time, the third solenoid valve drives the first valve assembly to open the second air vent, the first valve assembly drives the second valve assembly to move, and the second valve assembly synchronously opens the third air vent, so that the gas in the first air duct can enter the third chamber through the second vent, a part of the gas entering the third chamber is output to the outside through the outer ring fire air supply port, another part of the gas entering the third chamber enters the fourth chamber through the third vent, and the gas in the fourth chamber is output to the outside through the inner ring fire air supply port; when it is necessary to work in a low-fire state When the fire is burning, the first solenoid valve controls the first movable iron core to move and open the first air vent, and the external gas enters the first chamber through the air inlet and enters the first air channel through the first air vent. The second solenoid valve controls the second movable iron core to move and open the mouth of the first recess, and the gas in the first air channel enters the second chamber and can enter the fourth chamber through the first recess and the air hole. The gas in the fourth chamber is output to the outside through the inner ring fire air supply port. At the same time, the first valve assembly seals the second air vent, and the second valve assembly seals the third air vent, that is, the gas in the first air channel cannot enter the third chamber through the second air vent. In this way, there is no gas supply to the outer ring fire air supply port, and only the gas in the second chamber enters the fourth chamber through the air hole. Due to the small aperture of the air hole, the amount of gas supplied to the inner ring fire air supply port is small, that is, it is working in the state of low fire combustion at this time, and since the air hole is used to control the amount of gas entering the inner ring fire air supply port, precise control of low fire combustion can be achieved, and the low fire combustion effect is relatively stable.

[0013] In one embodiment, the first solenoid valve also includes a first frame, a first spring, and a first coil installed on the first frame and wound around the outside of the first movable iron core, the first movable iron core is movably arranged on the first frame, and the first movable iron core is connected to the first frame through the first spring; a first sealing cap is provided at the end of the first movable iron core, and the first movable iron core seals the first air vent through the first sealing cap; the second solenoid valve also includes a second frame, a second spring, and a second coil installed on the second frame and wound around the outside of the second movable iron core, the second movable iron core is movably arranged on the second frame, and the second movable iron core is connected to the second frame through the second spring; a second sealing cap is provided at the end of the second movable iron core, and the second movable iron core seals the mouth of the first recess through the second sealing cap.

[0014] In one of the embodiments, the gas regulating valve also includes a first sealing ring arranged on the valve body and circumferentially arranged around the first mounting port, and an end surface of the first frame mounted on the valve body is in close contact with the first sealing ring; the gas regulating valve also includes a second sealing ring arranged on the valve body and circumferentially arranged around the second mounting port, and an end surface of the second frame mounted on the valve body is in close contact with the second sealing ring.

[0015] In one embodiment, the third electromagnet includes a third frame mounted on the valve body, a fixed iron core fixedly mounted on the third frame, and a third coil mounted on the third frame and wound around the outside of the fixed iron core; the first valve assembly includes a permanent magnet rod arranged corresponding to the fixed iron core, a first sealing body arranged around the outer wall of one end of the permanent magnet rod, and a third spring mounted on the valve body and used to make the first sealing body contact and seal the second air vent; when the fixed iron core is working, the permanent magnet rod can move to drive the first sealing body to open the second air vent.

[0016] In one of the embodiments, the first end of the permanent magnetic rod is spaced relative to the fixed iron core, and the second end of the permanent magnetic rod is equipped with the first sealing body and extends into the third chamber; the outer wall surface of the first sealing body is a conical surface with a gradually increasing outer diameter, and the conical surface is used to seal against the edge of the second vent.

[0017] In one of the embodiments, the valve body is provided with a third mounting port connected to the first air duct, and the third mounting port is arranged opposite to the second air vent; the third frame includes an end panel for being installed on the valve body and sealing the third mounting port, and the end panel is provided with a second recess for avoiding the first end of the permanent magnet rod.

[0018] In one embodiment, the first valve assembly further includes an elastic sealing cover mounted on the first end of the permanent magnet rod, and the elastic sealing cover seals the third mounting port.

[0019] In one embodiment, the cavity wall of the third chamber is provided with a fourth mounting port opposite to the second air vent, and a first mounting cover detachably mounted on the fourth mounting port, and the third air vent is arranged on the first mounting cover; a third sealing ring is provided between the first mounting cover and the edge of the fourth mounting port; the cavity wall of the fourth chamber is provided with a fifth mounting port, and a second mounting cover detachably mounted on the valve body and sealing the fifth mounting port; a fourth sealing ring is provided between the second mounting cover and the edge of the fifth mounting port.

[0020] In one embodiment, the second valve assembly includes a movable rod, a second sealing body, and a fourth spring sleeved on the movable rod; the first end of the movable rod is gap-matched with or connected to the end face of the first valve assembly, the second sealing body is wrapped around the outer wall of the second end of the movable rod and is used to seal or open the third air vent, one end of the fourth spring is in conflict with the first end of the movable rod, and the other end of the fourth spring is in conflict with the wall of the third chamber.

[0021] The above second technical problem is solved by the following technical solution:

[0022] A combustion device comprises the above-mentioned gas regulating valve.

[0023] The combustion device of the present invention has the following beneficial effects compared with the background technology:

[0024] When the combustion device is required to work in a high-fire state, the first solenoid valve controls the first movable iron core to move and open the first vent, and the external gas enters the first chamber through the air inlet and enters the first air duct through the first vent. The second solenoid valve controls the second movable iron core to move and open the mouth of the first recess, and the gas in the first air duct enters the second chamber and can enter the fourth chamber through the first recess and the air hole. The gas in the fourth chamber is output to the outside through the inner ring fire air supply port. At the same time, the third solenoid valve drives the first valve assembly to open the second vent, the first valve assembly drives the second valve assembly to move, and the second valve assembly synchronously opens the third vent, so that the gas in the first air duct can enter the third chamber through the second vent, a part of the gas entering the third chamber is output to the outside through the outer ring fire air supply port, and another part of the gas entering the third chamber enters the fourth chamber through the third vent, and the gas in the fourth chamber is output to the outside through the inner ring fire air supply port. When the combustion device is required to work in a low-fire state, the first solenoid valve controls the first movable iron core to move and open the mouth of the first recess, and the gas in the first air duct enters the second chamber and can enter the fourth chamber through the first recess and the air hole. The gas in the fourth chamber is output to the outside through the inner ring fire air supply port. When the fire is burning, the first solenoid valve controls the first movable iron core to move and open the first air vent, and the external gas enters the first chamber through the air inlet and enters the first air channel through the first air vent. The second solenoid valve controls the second movable iron core to move and open the mouth of the first recess, and the gas in the first air channel enters the second chamber and can enter the fourth chamber through the first recess and the air hole. The gas in the fourth chamber is output to the outside through the inner ring fire air supply port. At the same time, the first valve assembly seals the second air vent, and the second valve assembly seals the third air vent, that is, the gas in the first air channel cannot enter the third chamber through the second air vent. In this way, there is no gas supply to the outer ring fire air supply port, and only the gas in the second chamber enters the fourth chamber through the air hole. Due to the small aperture of the air hole, the amount of gas supplied to the inner ring fire air supply port is small, that is, it is working in the state of low fire combustion at this time, and since the air hole is used to control the amount of gas entering the inner ring fire air supply port, precise control of low fire combustion can be achieved, and the low fire combustion effect is relatively stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A structural diagram of a gas regulating valve according to an embodiment of the present invention from one viewing angle;

[0028] Figure 2 It is an exploded structural diagram of a gas regulating valve according to one embodiment of the present invention from one viewing angle;

[0029] Figure 3 It is an exploded structural diagram of a gas regulating valve from another perspective according to an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of the internal structure of a gas regulating valve according to an embodiment of the present invention;

[0031] Figure 5 It is a cross-sectional schematic diagram of a gas regulating valve in a closed state according to an embodiment of the present invention;

[0032] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at P;

[0033] Figure 7 It is a cross-sectional schematic diagram of a gas regulating valve according to an embodiment of the present invention when it is in a high-fire working state;

[0034] Figure 8 It is a cross-sectional schematic diagram of a gas regulating valve according to an embodiment of the present invention when it is in a low-fire working state.

[0035] Reference numerals:

[0036] 10. Valve body; 11. First air passage; 12. First chamber; 121. First vent; 122. First mounting port; 123. Air inlet; 13. Second chamber; 131. First recess; 132. Air hole; 133. Second mounting port; 14. Third chamber; 141. Second vent; 142. Third vent; 143. Outer ring fire supply port; 144. Fourth mounting port; 145. First mounting cover; 15. Fourth chamber; 151. Inner ring fire supply port; 152. Fifth mounting port; 153. Second mounting cover; 16. Third mounting port; 20. First solenoid valve; 21. First movable iron core; 22. First frame; 23. First spring; 24. The first coil; 25, the first sealing cap; 30, the second solenoid valve; 31, the second movable iron core; 32, the second frame; 33, the second spring; 34, the second coil; 35, the second sealing cap; 40, the third solenoid valve; 41, the third frame; 411, the end panel; 412, the second recess; 42, the fixed iron core; 43, the third coil; 50, the first valve assembly; 51, the permanent magnet rod; 52, the first sealing body; 53, the third spring; 54, the elastic sealing cover; 60, the second valve assembly; 61, the movable rod; 62, the second sealing body; 63, the fourth spring; 71, the first sealing ring; 72, the second sealing ring; 73, the third sealing ring; 74, the fourth sealing ring. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0038] See also Figures 1 to 3 , Figure 1 A structural diagram of a gas regulating valve according to an embodiment of the present invention is shown from one viewing angle. Figure 2 The exploded structure diagram of a gas regulating valve according to one embodiment of the present invention is shown in one viewing angle. Figure 3 The gas regulating valve provided by the present invention comprises a valve body 10, a first solenoid valve 20, a second solenoid valve 30, a third solenoid valve 40, a first valve assembly 50 and a second valve assembly 60.

[0039] The valve body 10 is provided with a first air passage 11, a first chamber 12, a second chamber 13, a third chamber 14 and a fourth chamber 15. The first chamber 12 has a first vent 121 connected to the first air passage 11, a first mounting port 122 opposite to the first vent 121 and an air inlet 123 for introducing gas on its wall. The second chamber 13 is connected to the first air passage 11, and a first recess 131 is provided on its wall. An air hole 132 connected to the fourth chamber 15 is provided on the bottom wall of the first recess 131, and a second mounting port 133 opposite to the first recess 131 is also provided on the wall of the second chamber 13. The third chamber 14 has a second vent 141 connected to the first air passage 11 and a third vent 142 connected to the fourth chamber 15 on its wall. An outer ring fire air supply port 143 is further provided on the cavity wall of the third cavity 14 , and an inner ring fire air supply port 151 is provided on the cavity wall of the fourth cavity 15 .

[0040] The first solenoid valve 20 is mounted on the valve body 10 and includes a first movable iron core 21 , which extends into the first chamber 12 through the first installation opening 122 and can move in the first chamber 12 . The first movable iron core 21 is used to seal or open the first vent 121 .

[0041] The second solenoid valve 30 is installed on the valve body 10 and includes a second movable iron core 31 . The second movable iron core 31 extends into the second chamber 13 through the second installation opening 133 and can move in the second chamber 13 . The second movable iron core 31 is used to seal or open the mouth of the first recess 131 .

[0042] The third solenoid valve 40 is installed on the valve body 10. The third solenoid valve 40 is used to drive the first valve assembly 50 to move in the first air channel 11. The first valve assembly 50 is used to seal or open the second air vent 141. When the first valve assembly 50 moves, it can drive the second valve assembly 60 to move. The second valve assembly 60 can move in the third chamber 14. The second valve assembly 60 is used to seal or open the third air vent 142. When the first valve assembly 50 seals the second air vent 141, the second valve assembly 60 seals the third air vent 142. When the first valve assembly 50 opens the second air vent 141, it synchronously drives the second valve assembly 60 to open the third air vent 142.

[0043] It should be noted that the inner fire gas supply port 151 is used to output the fuel gas to the inner fire cover of the combustion device, and the outer fire gas supply port 143 is used to output the fuel gas to the outer fire cover of the combustion device.

[0044] It should also be noted that the specific size of the air hole 132 can be set according to actual needs. For example, the aperture of the air hole 132 can be set to 0.1mm, 0.2mm, 0.5mm, 0.8mm, etc., which is not limited here. When the aperture of the air hole 132 is set to be smaller, the amount of gas supplied to the inner ring fire gas supply port 151 is smaller, and the fire power burning on the inner ring fire cover is smaller. In addition, the aperture size in the first air duct 11 is usually set to 4mm, 5mm, 8mm, 10mm, 20mm, etc. according to actual needs, which is not limited here. The inner diameter of the first air duct 11 is larger than the aperture of the air hole 132.

[0045] See also Figures 5 to 8 , Figure 5 A cross-sectional schematic diagram showing a gas regulating valve in a closed state according to an embodiment of the present invention is shown; Figure 6 Shows Figure 5 Schematic diagram of the enlarged structure at P; Figure 7 A cross-sectional schematic diagram of a gas regulating valve according to an embodiment of the present invention when in a high-fire working state is shown; Figure 8The cross-sectional schematic diagram of the gas regulating valve of one embodiment of the present invention when in a low-fire working state is shown. When the above-mentioned gas regulating valve needs to work in a high-fire state, the first solenoid valve 20 controls the first movable iron core 21 to move and open the first vent 121, and the external gas enters the first chamber 12 through the air inlet 123 and enters the first air channel 11 through the first vent 121. The second solenoid valve 30 controls the second movable iron core 31 to move and open the mouth of the first recess 131, and the gas in the first air channel 11 enters the second chamber 13 and can enter the fourth chamber 15 through the first recess 131 and the air hole 132. The gas in the fourth chamber 15 is output to the outside through the inner ring fire supply port 151. At the same time, When the third solenoid valve 40 drives the first valve assembly 50 to open the second vent 141, the first valve assembly 50 drives the second valve assembly 60 to move, and the second valve assembly 60 opens the third vent 142 synchronously, so that the gas in the first gas channel 11 can enter the third chamber 14 through the second vent 141, and a part of the gas entering the third chamber 14 is output to the outside through the outer ring fire supply port 143, and another part of the gas entering the third chamber 14 enters the fourth chamber 15 through the third vent 142, and the gas in the fourth chamber 15 is output to the outside through the inner ring fire supply port 151; when it is necessary to work at When the fire is burning at a low level, the first solenoid valve 20 controls the first movable iron core 21 to move and open the first vent 121, and the external gas enters the first chamber 12 through the air inlet 123 and enters the first air channel 11 through the first vent 121. The second solenoid valve 30 controls the second movable iron core 31 to move and open the mouth of the first recess 131, and the gas in the first air channel 11 enters the second chamber 13 and can enter the fourth chamber 15 through the first recess 131 and the air hole 132. The gas in the fourth chamber 15 is output to the outside through the inner ring fire supply port 151. At the same time, the first valve assembly 50 seals the second vent. The air port 141, the second valve assembly 60 seals the third air vent 142, that is, the gas in the first air duct 11 cannot enter the third chamber 14 through the second air vent 141, so that the outer ring fire air supply port 143 has no gas supply, and only the gas in the second chamber 13 enters the fourth chamber 15 through the air hole 132. Since the aperture of the air hole 132 is small, the amount of gas supplied to the inner ring fire air supply port 151 is small, that is, it works in a state of low fire combustion at this time, and since the air hole 132 is used to control the amount of gas entering the inner ring fire air supply port 151, precise control of low fire combustion can be achieved, and the low fire combustion effect is relatively stable.

[0046] See also Figures 2 to 5 , Figure 4The internal structure schematic diagram of the gas regulating valve of one embodiment of the present invention is shown. Further, the first solenoid valve 20 also includes a first frame 22, a first spring 23 and a first coil 24 mounted on the first frame 22 and wound around the outside of the first movable iron core 21. The first movable iron core 21 is movably arranged on the first frame 22, and the first movable iron core 21 is connected to the first frame 22 through the first spring 23. A first sealing cap 25 is provided at the end of the first movable iron core 21, and the first movable iron core 21 seals the first vent 121 through the first sealing cap 25. In addition, the second solenoid valve 30 also includes a second frame 32, a second spring 33 and a second coil 34 mounted on the second frame 32 and wound around the outside of the second movable iron core 31. The second movable iron core 31 is movably arranged on the second frame 32, and the second movable iron core 31 is connected to the second frame 32 through the second spring 33. The second movable iron core 31 is provided with a second sealing cap 35 at the end thereof, and the second movable iron core 31 seals the mouth of the first recess 131 through the second sealing cap 35. In this way, when the first coil 24 is energized, the first movable iron core 21 can be controlled to move into the first frame 22 and the first spring 23 can be compressed. At this time, the first movable iron core 21 drives the first sealing cap 25 to open the first vent 121. When the first coil 24 is de-energized, the first spring 23 resets and drives the first movable iron core 21 to move so that the first sealing cap 25 seals the first vent 121. When the first movable iron core 21 seals the first vent 121 through the first sealing cap 25, the sealing effect of the first vent 121 is better, and the gas can be prevented from entering the first air passage 11 through the first vent 121. Similarly, when the second movable iron core 31 seals the mouth of the first recess 131 through the second sealing cap 35, the mouth of the first recess 131 has a good sealing effect, which can prevent the gas in the second chamber 13 from entering the fourth chamber 15 through the first recess 131 and the air hole 132. Specifically, the first sealing cap 25 and the second sealing cap 35 are, for example, elastic caps, which are deformed by force to ensure the sealing performance of the first vent 121 and the second vent 141. Of course, the first sealing cap 25 and the second sealing cap 35 can also be made of other materials, which are not limited here.

[0047] Specifically, the first spring 23 is sleeved on the outside of the first movable iron core 21, one end of the first spring 23 is in conflict with the first sealing cap 25, and the other end of the first spring 23 is in conflict with the end surface of the first frame 22. In addition, the second spring 33 is sleeved on the outside of the second movable iron core 31, one end of the second spring 33 is in conflict with the second sealing cap 35, and the other end of the second spring 33 is in conflict with the end surface of the second frame 32.

[0048] See also Figures 5 to 8In one embodiment, the gas regulating valve further includes a first sealing ring 71 disposed on the valve body 10 and circumferentially arranged around the first mounting port 122, and an end surface of the first frame 22 mounted on the valve body 10 is in close contact with the first sealing ring 71. The gas regulating valve further includes a second sealing ring 72 disposed on the valve body 10 and circumferentially arranged around the second mounting port 133, and an end surface of the second frame 32 mounted on the valve body 10 is in close contact with the second sealing ring 72. In this way, the first sealing ring 71 can ensure the sealing performance between the end surface of the first frame 22 and the first mounting port 122, and prevent the gas in the first chamber 12 from leaking outward through the first mounting port 122; the second sealing ring 72 can ensure the sealing performance between the end surface of the second frame 32 and the second mounting port 133, and prevent the gas in the second chamber 13 from leaking outward through the second mounting port 133.

[0049] See also Figure 2 , Figure 4 and Figure 5 Further, the third electromagnet includes a third frame 41 mounted on the valve body 10, a fixed iron core 42 fixedly mounted on the third frame 41, and a third coil 43 mounted on the third frame 41 and wound around the outside of the fixed iron core 42. The first valve assembly 50 includes a permanent magnet rod 51 corresponding to the fixed iron core 42, a first sealing body 52 arranged around the outer wall of one end of the permanent magnet rod 51, and a third spring 53 mounted on the valve body 10 and used to make the first sealing body 52 contact and seal the second vent 141. When the fixed iron core 42 is working, the permanent magnet rod 51 can move to drive the first sealing body 52 to open the second vent 141. Thus, when the third coil 43 is powered on, the fixed iron core 42 pushes the permanent magnet rod 51 through magnetic force, and the permanent magnet rod 51 correspondingly drives the first sealing body 52 to open the second vent 141. When the second vent 141 is opened, the gas in the first air passage 11 can enter the third chamber 14 through the second vent 141. When the third coil 43 is not powered on, the elastic restoring force of the third spring 53 can realize the movement of the permanent magnet rod 51 to drive the first sealing body 52 to contact and seal the second vent 141, and the gas in the first air passage 11 cannot enter the third chamber 14.

[0050] Specifically, the third spring 53 is disposed between the end face of the permanent magnetic rod 51 and the inner wall of the third chamber 14, and the third spring 53 is in a compressed state when the permanent magnetic rod 51 drives the first sealing body 52 to open the second vent 141. Of course, the third spring 53 can also be disposed inside the first airway 11, with one end of the third spring 53 connected to the inner wall of the first airway 11, and the other end of the third spring 53 connected to the end of the permanent magnetic rod 51, and the third spring 53 is in a stretched state when the permanent magnetic rod 51 drives the first sealing body 52 to open the second vent 141.

[0051] See also Figures 5 to 8In one embodiment, the first end of the permanent magnet rod 51 is spaced apart from the fixed core 42, and the second end of the permanent magnet rod 51 is provided with a first sealing body 52 and extends into the third chamber 14. The outer wall surface of the first sealing body 52 is a tapered surface with a gradually increasing outer diameter, and the tapered surface is used to seal against the edge of the second vent 141. Specifically, the first sealing body 52 is, for example, an elastic first sealing body 52. ​​When the tapered surface of the first sealing body 52 seals against the edge of the second vent 141, it is beneficial to achieve a better sealing effect between the first sealing body 52 and the second vent 141.

[0052] See also Figures 5 to 8 Furthermore, the valve body 10 is provided with a third mounting port 16 connected to the first air channel 11. The third mounting port 16 is arranged opposite to the second vent 141. The third frame 41 includes an end panel 411 for mounting on the valve body 10 and sealing the third mounting port 16, and the end panel 411 is provided with a second recess 412 for avoiding the first end of the permanent magnet rod 51. In this way, the second end of the permanent magnet rod 51 is located in the third chamber 14, and the first end of the permanent magnet rod 51 can enter the second recess 412 through the first air channel 11. The second recess 412 plays a role of avoiding the permanent magnet rod 51, that is, the permanent magnet rod 51 with a relatively large volume size can be accommodated in a smaller space, and the overall structural arrangement is compact and reasonable.

[0053] See also Figures 5 to 8 Furthermore, the first valve assembly 50 further includes an elastic sealing cover 54 mounted on the first end of the permanent magnet rod 51. The elastic sealing cover 54 seals the third installation opening 16. In this way, on the one hand, the elastic sealing cover 54 seals the third installation opening 16, which can ensure the sealing of the first air passage 11; on the other hand, during the movement of the permanent magnet rod 51, the elastic sealing cover 54 can be elastically deformed accordingly, which can ensure the operation stability of the permanent magnet rod 51.

[0054] See also Figures 5 to 8 Further, the cavity wall of the third chamber 14 is provided with a fourth installation opening 144 opposite to the second vent opening 141 , and a first installation cover 145 detachably blocking the fourth installation opening 144 . The third vent opening 142 is provided on the first installation cover 145 .

[0055] See also Figures 5 to 8 Optionally, a third sealing ring 73 is provided between the first installation cover 145 and the edge of the fourth installation opening 144. The cavity wall of the fourth chamber 15 is provided with a fifth installation opening 152, and a second installation cover 153 which is detachably installed on the valve body 10 and blocks the fifth installation opening 152. A fourth sealing ring 74 is provided between the second installation cover 153 and the edge of the fifth installation opening 152. In this way, by opening the second installation cover 153 and the first installation cover 145, the first valve assembly 50 can be installed inside the valve body 10.

[0056] See also Figures 5 to 8 In one embodiment, the second valve assembly 60 includes a movable rod 61, a second sealing body 62, and a fourth spring 63 sleeved on the movable rod 61. The first end of the movable rod 61 is in clearance fit with or connected to the end surface of the first valve assembly 50, the second sealing body 62 is wound around the outer wall of the second end of the movable rod 61 and is used to seal or open the third vent 142, one end of the fourth spring 63 is in conflict with the first end of the movable rod 61, and the other end of the fourth spring 63 is in conflict with the cavity wall of the third chamber 14. Specifically, the second end of the movable rod 61 and the second sealing body 62 are arranged in the fourth chamber 15, and under the action of the fourth spring 63, the second sealing body 62 on the second end of the movable rod 61 is in close contact with the third vent 142, and the movable rod 61 is driven to move under the drive of the first valve assembly 50, and the movable rod 61 drives the second sealing body 62 to open the third vent 142.

[0057] See also Figures 5 to 8 In one embodiment, a combustion device includes a gas regulating valve according to any one of the above embodiments.

[0058] When the combustion device described above needs to work in a high-fire state, the first solenoid valve 20 controls the first movable iron core 21 to move and open the first vent 121, and the external gas enters the first chamber 12 through the air inlet 123 and enters the first air duct 11 through the first vent 121. The second solenoid valve 30 controls the second movable iron core 31 to move and open the mouth of the first recess 131, and the gas in the first air duct 11 enters the second chamber 13 and can enter the fourth chamber 15 through the first recess 131 and the air hole 132. The gas in the fourth chamber 15 is output to the outside through the inner ring fire supply port 151. At the same time The third solenoid valve 40 drives the first valve assembly 50 to open the second vent 141, the first valve assembly 50 drives the second valve assembly 60 to move, and the second valve assembly 60 synchronously opens the third vent 142, so that the gas in the first gas channel 11 can enter the third chamber 14 through the second vent 141, a part of the gas entering the third chamber 14 is output to the outside through the outer ring fire supply port 143, and another part of the gas entering the third chamber 14 enters the fourth chamber 15 through the third vent 142, and the gas in the fourth chamber 15 is output to the outside through the inner ring fire supply port 151; when it is necessary to work at a small When the fire is burning, the first solenoid valve 20 controls the first movable iron core 21 to move and open the first vent 121, and the external gas enters the first chamber 12 through the air inlet 123 and enters the first air channel 11 through the first vent 121. The second solenoid valve 30 controls the second movable iron core 31 to move and open the mouth of the first recess 131, and the gas in the first air channel 11 enters the second chamber 13 and can enter the fourth chamber 15 through the first recess 131 and the air hole 132. The gas in the fourth chamber 15 is output to the outside through the inner ring fire supply port 151. At the same time, the first valve assembly 50 seals the second vent. The air port 141, the second valve assembly 60 seals the third air vent 142, that is, the gas in the first air duct 11 cannot enter the third chamber 14 through the second air vent 141, so that the outer ring fire air supply port 143 has no gas supply, and only the gas in the second chamber 13 enters the fourth chamber 15 through the air hole 132. Since the aperture of the air hole 132 is small, the amount of gas supplied to the inner ring fire air supply port 151 is small, that is, it works in a state of low fire combustion at this time, and since the air hole 132 is used to control the amount of gas entering the inner ring fire air supply port 151, precise control of low fire combustion can be achieved, and the low fire combustion effect is relatively stable.

[0059] It should be noted that in the infringement comparison, one of the components described in the text is connected to another component, and one of the components is installed on another component. It can be understood that the connection method of the two components can be connected by bolts, screws, pins, rivets and other mounting parts, or fixedly connected by clamping, welding or integrated molding. Among them, the integrated molding method can be extrusion, casting, press fitting, injection molding and other processes.

[0060] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0062] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0063] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0066] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

Claims

1. A gas regulating valve, characterized in that: The gas regulating valve comprises: A valve body (10), wherein a first air passage (11), a first chamber (12), a second chamber (13), a third chamber (14) and a fourth chamber (15) are provided in the valve body (10); a first vent (121) connected to the first air passage (11), a first mounting port (122) opposite to the first air passage (121) and an air inlet (123) for introducing fuel gas are provided on the cavity wall of the first chamber (12); the second chamber (13) is connected to the first air passage (11); a first recess (131) is provided on the cavity wall of the second chamber (13); An air hole (132) communicating with the fourth chamber (15) is provided on the bottom wall of the recess (131); a second mounting opening (133) opposite to the first recess (131) is also provided on the cavity wall of the second chamber (13); a second air vent (141) communicating with the first air duct (11) and a third air vent (142) communicating with the fourth chamber (15) are provided on the cavity wall of the third chamber (14); an outer ring fire air supply opening (143) is also provided on the cavity wall of the third chamber (14); and an inner ring fire air supply opening (151) is provided on the cavity wall of the fourth chamber (15); a first solenoid valve (20), the first solenoid valve (20) being mounted on the valve body (10), the first solenoid valve (20) comprising a first movable iron core (21), the first movable iron core (21) extending into the first chamber (12) through the first mounting opening (122) and being movable in the first chamber (12), the first movable iron core (21) being used to seal or open the first vent (121); a second solenoid valve (30), the second solenoid valve (30) being mounted on the valve body (10), the second solenoid valve (30) comprising a second movable iron core (31), the second movable iron core (31) extending into the second chamber (13) through the second mounting opening (133) and being movable in the second chamber (13), the second movable iron core (31) being used to seal or open the mouth of the first recess (131); A third solenoid valve (40), a first valve assembly (50) and a second valve assembly (60), wherein the third solenoid valve (40) is mounted on the valve body (10), the third solenoid valve (40) is used to drive the first valve assembly (50) to move in the first air passage (11), the first valve assembly (50) is used to seal or open the second air vent (141), the first valve assembly (50) can drive the second valve assembly (60) to move when the first valve assembly (50) moves, the second valve assembly (60) can move in the third chamber (14), the second valve assembly (60) is used to seal or open the third air vent (142), when the first valve assembly (50) seals the second air vent (141), the second valve assembly (60) seals the third air vent (142), when the first valve assembly (50) opens the second air vent (141), the second valve assembly (60) is synchronously driven to open the third air vent (142).

2. The gas regulating valve according to claim 1, characterized in that: The first solenoid valve (20) further comprises a first frame (22), a first spring (23), and a first coil (24) mounted on the first frame (22) and wound around the outside of the first movable iron core (21); the first movable iron core (21) is movably mounted on the first frame (22); the first movable iron core (21) is connected to the first frame (22) via the first spring (23); a first sealing cap (25) is provided at the end of the first movable iron core (21); the first movable iron core (21) seals the first vent (121) via the first sealing cap (25); The second solenoid valve (30) further comprises a second frame (32), a second spring (33) and a second coil (34) mounted on the second frame (32) and wound around the outside of the second movable iron core (31); the second movable iron core (31) is movably mounted on the second frame (32); the second movable iron core (31) is connected to the second frame (32) via the second spring (33); a second sealing cap (35) is provided at the end of the second movable iron core (31); the second movable iron core (31) seals the mouth of the first recess (131) via the second sealing cap (35).

3. The gas regulating valve according to claim 2, characterized in that: The gas regulating valve further comprises a first sealing ring (71) arranged on the valve body (10) and arranged circumferentially around the first mounting opening (122); an end surface of one end of the first frame (22) mounted on the valve body (10) is in close contact with the first sealing ring (71); the gas regulating valve further comprises a second sealing ring (72) arranged on the valve body (10) and arranged circumferentially around the second mounting opening (133); an end surface of one end of the second frame (32) mounted on the valve body (10) is in close contact with the second sealing ring (72).

4. The gas regulating valve according to claim 1, characterized in that: The third electromagnet comprises a third frame (41) mounted on the valve body (10), a fixed iron core (42) fixedly mounted on the third frame (41), and a third coil (43) mounted on the third frame (41) and wound around the outside of the fixed iron core (42); the first valve assembly (50) comprises a permanent magnet rod (51) arranged corresponding to the fixed iron core (42), a first sealing body (52) arranged around the outer wall of one end of the permanent magnet rod (51), and a third spring (53) mounted on the valve body (10) and used to make the first sealing body (52) contact and seal the second vent (141); when the fixed iron core (42) is in operation, it can make the permanent magnet rod (51) move to drive the first sealing body ( 52) opens the second air vent (141); wherein the third spring (53) is arranged between the end face of the permanent magnetic rod (51) and the inner wall of the third chamber (14), and when the permanent magnetic rod (51) drives the first sealing body (52) to open the second air vent (141), the third spring (53) is in a compressed state; or, the third spring (53) is arranged inside the first airway (11), one end of the third spring (53) is connected to the inner wall of the first airway (11), and the other end of the third spring (53) is connected to the end of the permanent magnetic rod (51), and when the permanent magnetic rod (51) drives the first sealing body (52) to open the second air vent (141), the third spring (53) is in a stretched state.

5. The gas regulating valve according to claim 4, characterized in that: The first end of the permanent magnetic rod (51) is arranged relative to the fixed iron core (42) at a distance, and the second end of the permanent magnetic rod (51) is equipped with the first sealing body (52) and extends into the third chamber (14); the outer wall surface of the first sealing body (52) is a conical surface with a gradually increasing outer diameter, and the conical surface is used to seal against the edge of the second vent (141).

6. The gas regulating valve according to claim 5, characterized in that: The valve body (10) is provided with a third mounting opening (16) which is in communication with the first air passage (11), and the third mounting opening (16) is arranged opposite to the second vent (141); the third frame (41) comprises an end panel (411) which is used for being mounted on the valve body (10) and sealing the third mounting opening (16), and the end panel (411) is provided with a second recess (412) which avoids the first end of the permanent magnet rod (51).

7. The gas regulating valve according to claim 6, characterized in that: The first valve assembly (50) further comprises an elastic sealing cover (54) mounted on the first end of the permanent magnet rod (51), wherein the elastic sealing cover (54) seals the third installation opening (16).

8. The gas regulating valve according to claim 1, characterized in that: The cavity wall of the third chamber (14) is provided with a fourth mounting port (144) opposite to the second vent (141), and a first mounting cover (145) detachably mounted on the fourth mounting port (144) to seal the third vent (142), and the third vent (142) is arranged on the first mounting cover (145); a third sealing ring (73) is provided between the first mounting cover (145) and the edge of the fourth mounting port (144); the cavity wall of the fourth chamber (15) is provided with a fifth mounting port (152), and a second mounting cover (153) detachably mounted on the valve body (10) to seal the fifth mounting port (152); a fourth sealing ring (74) is provided between the second mounting cover (153) and the edge of the fifth mounting port (152).

9. The gas regulating valve according to any one of claims 1 to 8, characterized in that: The second valve assembly (60) includes a movable rod (61), a second sealing body (62), and a fourth spring (63) sleeved on the movable rod (61); the first end of the movable rod (61) is loosely matched with the end face of the first valve assembly (50) or is connected to each other, the second sealing body (62) is wound around the outer wall of the second end of the movable rod (61) and is used to seal or open the third vent (142), one end of the fourth spring (63) is in contact with the first end of the movable rod (61), and the other end of the fourth spring (63) is in contact with the wall of the third chamber (14).

10. A combustion device, characterized in that: The combustion device comprises a gas regulating valve as claimed in any one of claims 1 to 9.

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