Gas stove

Abstract

The present invention discloses a gas stove, comprising a section valve and a burner, wherein the section valve and the burner are connected through an inner ring gas channel and an outer ring gas channel, and further comprising a solenoid valve, which is a bistable valve. The bistable valve is arranged between the inner ring gas channel and the outer ring gas channel, and the valve stem of the bistable valve sequentially extends into the connecting point of the inner ring gas channel and the outer ring gas channel and into the inner ring gas channel, and a first sealing member and a second sealing member are provided on the rod body and the first end of the valve stem of the bistable valve; the connecting point of the outer ring gas channel and the inner ring gas channel is always kept closed, and the bistable valve can be switched between a first state and a second state, and when the valve stem switches to the first state, the valve stem closes the outer ring gas channel and reduces the flow area for gas circulation in the inner ring gas channel; when the valve stem switches to the second state, the valve stem opens the outer ring gas channel and restores the flow area for gas circulation in the inner ring gas channel to the level before the valve stem extends into the inner ring gas channel.

Description

Technical Field

[0001] The present invention relates to the technical field of gas stoves, in particular to a gas stove. Background Art

[0002] A gas stove is usually provided with a stage valve and a burner, and an inner ring gas channel and an outer ring gas channel are provided between the stage valve and the burner. Gas is supplied to the inner ring fire cover and the outer ring gas channel respectively, and the gas is burned through the inner ring fire cover and the outer ring fire cover respectively to provide thermal efficiency to meet the different thermal efficiency requirements of users when cooking different ingredients. For example, when the thermal efficiency requirement is low, that is, when only the inner ring fire cover is required to burn, the outer ring gas channel of the outer ring fire cover is closed to always keep only the inner ring fire cover burning, so that no matter how the gas knob is turned, the outer ring fire cover will not burn. This state is called temperature control mode.

[0003] In existing gas stoves with temperature control mode, multiple solenoid valves are generally used to realize the opening and closing of the outer ring to achieve the purpose of temperature control. When the user needs to enter the temperature control mode, the outer ring gas channel is closed by opening the solenoid valve to realize the continuous shutdown of the outer ring fire cover. However, in the context of existing burners or gas stoves generally designed for large loads, even if the outer ring fire cover is closed and only the inner ring fire cover is kept burning, the fire power of the inner ring fire cover is still above 1000w, and the temperature of the pot will continue to rise or stabilize at a very high value, resulting in the gas stove entering the temperature control mode and being unable to control the low temperature by only keeping the inner ring fire cover burning; and, for gas stoves with power saving requirements, after the user selects the temperature control mode, for usability reasons, the power supply of the built-in battery of the gas stove itself is difficult to support the long-term use of multiple solenoid valves, resulting in the solution of setting multiple solenoid valves to solve this problem being difficult to implement. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a gas stove in order to overcome the defects in the prior art that the thermal efficiency of the burner is still high when the outer ring gas channel is closed and the large power consumption of multiple solenoid valves may cause the solenoid valves to fail and fail to close the outer ring gas channel.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] A gas stove, comprising a stage valve and a burner, wherein the stage valve and the burner are connected via an inner ring gas passage and an outer ring gas passage, respectively. The gas stove further comprises a solenoid valve, wherein the solenoid valve is a bistable valve, and is disposed between the inner ring gas passage and the outer ring gas passage, with a valve stem of the bistable valve sequentially extending into the connection between the inner ring gas passage and the outer ring gas passage and into the inner ring gas passage. A first seal and a second seal are disposed on a stem of the valve stem of the bistable valve extending into the inner ring gas passage and on a first end of the valve stem;

[0007] The bistable valve is capable of driving the valve stem to switch between a first state and a second state. When the valve stem switches to the first state, the valve stem closes the outer ring gas channel and reduces the flow area of the inner ring gas channel for gas circulation.

[0008] When the valve stem switches to the second state, the valve stem opens the outer ring gas channel and restores the flow area of the inner ring gas channel to the flow area for gas flow before the valve stem extends into the inner ring gas channel;

[0009] When the valve stem switches between the first state and the second state, the connection between the outer ring gas channel and the inner ring gas channel is always kept closed.

[0010] In this solution, an inner ring gas channel and an outer ring gas channel are connected between the stage valve and the burner of the gas stove, respectively. In addition, a solenoid valve, specifically a bistable valve, is provided. The power consumption of the bistable valve is relatively small and it is powered by a battery. It can meet the situation where the outer ring gas channel cannot be closed in time when the gas stove opens or closes the outer ring gas channel multiple times through the solenoid valve, due to the large power consumption of the solenoid valve and the exhaustion of the battery due to long-term use of the gas stove, which causes the solenoid valve to fail. In other words, it meets the power saving needs of the gas stove. The valve stem body and the first end of the valve stem of the bistable valve are provided with a first seal and a second seal. The valve stem extends into the outer ring gas channel and the connection between the outer ring gas channel and the inner ring gas channel and into the inner ring gas channel in turn. The second seal is used to seal the connection between the inner ring gas channel and the outer ring gas channel. In the first state, the second seal provided at the first end of the valve stem extends into the inner ring gas channel to reduce the flow area of the inner ring gas channel available for gas circulation. The outer ring gas channel is closed by the first seal provided on the valve stem body. At the same time, due to the first seal and the second seal The second sealing member is arranged at a distance from each other, and the second sealing member does not completely extend into the inner ring gas channel, so that the connection between the inner ring gas channel and the outer ring gas channel is sealed by the second sealing member, thereby preventing the gas in the outer ring gas channel from entering the inner ring gas channel through the connection between the inner ring gas channel and the outer ring gas channel under the requirement of temperature control. When the second sealing member extends into the inner ring gas channel and reduces the flow area of the inner ring gas channel, the connection between the inner ring gas channel and the outer ring gas channel is sealed to further reduce the amount of gas entering the inner ring gas channel and the burner, thereby improving the temperature control effect of the gas stove.

[0011] Preferably, a first channel is formed between the inner ring gas channel and the outer ring gas channel, the bistable valve is located on one side of the outer ring gas channel and the valve stem extends into the first channel and the inner ring gas channel in sequence, and the diameter of the first channel is smaller than the diameter between the first channel and the valve port of the bistable valve.

[0012] In this solution, a first channel is provided to achieve communication between the inner ring gas channel and the outer ring gas channel, that is, the first channel is connected to the inner ring gas channel and the outer ring gas channel respectively, and the first channel itself achieves communication between the inner ring gas channel and the outer ring gas channel. The first state and the second state mentioned above can be achieved by successively extending the valve stem of the bistable valve into the first channel and the inner ring gas channel. The diameter of the first channel is set to be smaller than the diameter of the bistable valve port so that during processing, the valve port part for accommodating the bistable valve can be processed first, and then the first channel can be processed, thereby reducing the processing difficulty.

[0013] Preferably, the inner ring gas channel is arranged in parallel with the outer ring gas channel, and the first channel is arranged in a perpendicular direction to the inner ring gas channel and the outer ring gas channel.

[0014] In this solution, the inner ring gas channel is arranged parallel to the outer ring gas channel and the first channel is arranged perpendicular to the inner ring gas channel and the outer ring gas channel. This not only facilitates the processing of the first channel, but also reduces the space occupied by the bistable valve in the stove bottom box of the gas stove when the first channel and the inner ring gas channel and the outer ring gas channel are arranged in other directions, thereby improving space utilization.

[0015] Preferably, the first sealing member is correspondingly arranged between the first channel and the valve port of the bistable valve, and the size of the first sealing member is larger than the diameter of the first channel.

[0016] In this solution, the valve stem reciprocates along the extension direction of the first channel, and the first sealing member is arranged close to the valve port of the bistable valve and has a size larger than the diameter of the first channel. The purpose is that when the valve stem drives the first sealing member to move, the first sealing member can cover the first channel or open the first channel, thereby improving the sealing of the outer ring gas channel connected to the first channel and the connection between the outer ring gas channel and the inner ring gas channel.

[0017] Preferably, the first channel penetrates the inner ring gas channel and a cut-off groove is formed on the inner wall of the inner ring gas channel away from the bistable valve.

[0018] In this solution, the first channel passes through the inner ring gas channel and is provided with an intercepting groove, which is used to allow gas to flow. That is to say, when the second seal extends into the inner ring gas channel, in order to prevent the amount of gas entering the burner from the inner ring gas channel from being too small, the second seal occupies too large a flow area of the inner ring gas channel, allowing the gas to enter the burner through the intercepting groove, thereby avoiding the situation where the user experience is poor due to accidental flameout of the burner.

[0019] Preferably, the second sealing member extends into the first channel and a size of the second sealing member is consistent with a diameter of the first channel.

[0020] In this solution, the second seal is used to seal the first channel to prevent the inner ring gas channel from communicating with the outer ring gas channel, and to prevent the residual gas in the outer ring gas channel from flowing into the inner ring gas channel through the first channel after the outer ring gas channel is closed by the first seal. The gas can only enter the burner through the inner ring gas channel with a reduced gas flow area, thereby improving the temperature control effect of the gas stove.

[0021] Preferably, the size of the second sealing member is smaller than the diameter of the inner ring gas channel.

[0022] In this solution, a gap is formed between the second sealing member and the inner ring gas channel to prevent the valve stem from extending into the inner ring gas channel and closing the inner ring gas channel, thereby preventing the burner from accidentally extinguishing.

[0023] Preferably, a third seal is provided in the first channel, the third seal is located between the first seal and the second seal and the third seal is located on the side of the outer ring gas channel close to the inner ring gas channel, and the size of the second seal is smaller than the diameter of the first channel.

[0024] In this solution, a third seal is additionally provided. In this case, the size of the second seal does not need to be consistent with the diameter of the first channel and can be smaller than the diameter of the first channel. The third seal is used to seal the connection between the inner ring gas channel and the outer ring gas channel, thereby preventing residual gas in the outer ring gas channel from entering the inner ring gas channel.

[0025] Preferably, the third sealing member is sleeved on the valve stem, an elastic member is provided between the third sealing member and the second sealing member, a step groove is provided in the first channel, and the elastic member provides elastic force for the third sealing member to abut against the step groove.

[0026] In this solution, the elastic member is used to provide elastic force to keep the third seal away from the valve port of the bistable valve, and the step groove is used to clamp the third seal to prevent the third seal from sliding into the inner ring gas channel under the action of the elastic member, thereby preventing the gas from flowing into the inner ring gas channel through the connection between the inner ring gas channel and the outer ring gas channel.

[0027] Preferably, a communication structure is provided between the outer ring gas channel and the first sealing member, and the communication structure is configured so that when the bistable valve is opened and the first sealing member closes the outer ring gas channel, the gas flows into the outer ring gas channel through the communication structure.

[0028] In this solution, the connecting structure is used to direct the gas from the stage valve to the outer ring gas channel into the outer ring gas channel through the connecting structure when the outer ring gas channel is sealed by the first sealing component, so that the outer ring fire cover of the burner burns according to the amount of gas. At the same time, the gas flow area of the inner ring gas channel is reduced so that the fire power of the inner ring fire cover of the burner is in a "low fire" state. The gas entering the outer ring gas channel through the connecting structure is also in a "low fire" state at the outer ring fire cover, that is, the inner ring fire cover is "low fire" and the outer ring fire cover is "low fire", and the gas stove can also achieve the purpose of temperature control.

[0029] Preferably, the bistable valve is provided on the inner ring gas outlet and the outer ring gas outlet of the section valve, and the valve stem of the bistable valve extends into the connection between the outer ring gas outlet and the inner ring gas outlet and into the inner ring gas outlet in sequence.

[0030] In this solution, by directly setting the bistable valve at the inner ring gas outlet and the outer ring gas outlet of the section valve, the inner ring gas channel and the outer ring gas channel between the section valve and the burner occupy less space in the stove bottom box of the gas stove, making the setting more convenient and the section valve more integrated.

[0031] Preferably, the gas knob of the gas stove is connected to the bistable valve and the rotation angle of the gas knob is set so that the bistable valve opens when the gas knob is rotated to a preset angle;

[0032] Or the gas stove is provided with a control mechanism, the control mechanism is communicated with the bistable valve, and when the control mechanism is turned on, the bistable valve is correspondingly opened.

[0033] In this solution, the gas stove sets the angle of the gas knob or the control mechanism so that the gas stove can directly enter the temperature control mode under different usage conditions, thereby improving the temperature control efficiency of the gas stove and the user experience.

[0034] The positive progress of the present invention is that: the present invention sets a bistable valve for closing the outer ring gas channel and reducing the gas flow area of the inner ring gas channel. The bistable valve can be powered by a battery, thereby meeting the gas stove's demand for energy saving, improving the service life of the gas stove and ensuring normal temperature control of the gas stove. In addition, the present invention can reduce or restore the gas flow area of the inner ring gas channel while opening or closing the outer ring gas channel through the valve stem of the bistable valve, so that when the gas stove needs to control the temperature, the gas flowing into the burner only enters the burner through the inner ring gas channel with the reduced gas flow area, thereby ensuring the temperature control effect of the gas stove. Furthermore, the valve stem of the present invention can continuously ensure that the connection between the inner ring gas channel and the outer ring gas channel is sealed, preventing residual gas in the outer ring gas channel from entering the inner ring gas channel through the connection between the inner ring gas channel and the outer ring gas channel when temperature control is required, thereby ensuring the temperature control effect of the gas stove. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic structural diagram of a gas stove according to embodiment 1 of the present invention.

[0036] Figure 2 This is a positional relationship diagram of the bistable valve, the stage valve, and the burner in Example 1 of the present invention.

[0037] Figure 3 for Figure 2 A partial enlarged view of .

[0038] Figure 4 This is a structural schematic diagram of the bistable valve according to Example 1 of the present invention.

[0039] Figure 5 for Figure 4 AA cross-sectional view.

[0040] Figure 6 This is a cross-sectional view of the bistable valve according to embodiment 2 of the present invention.

[0041] Figure 7 This is a positional relationship diagram of the bistable valve and the stage valve in Example 3 of the present invention.

[0042] Figure 8 for Figure 7 Cross-sectional view of the bistable valve and the segment valve.

[0043] Description of reference numerals:

[0044] Section valve 1

[0045] Burner 2

[0046] Inner ring gas channel 3

[0047] Outer ring gas channel 4

[0048] Bistable valve 5

[0049] Valve stem 51

[0050] Battery 6

[0051] First seal 7

[0052] Second sealing member 8

[0053] First channel 9

[0054] Interceptor trough 10

[0055] The third sealing member 11 DETAILED DESCRIPTION

[0056] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0057] Example 1

[0058] This embodiment provides a gas stove, the specific structure of which is as follows Figure 1 、 Figure 2 and Figure 3As shown, the gas stove includes a section valve 1 and a burner 2, and an inner ring gas channel 3 and an outer ring gas channel 4 are provided between the section valve 1 and the burner 2. The two ends of the inner ring gas channel 3 are respectively connected to the section valve 1 and the inner ring fire cover of the burner 2, while the two ends of the outer ring gas channel 4 are respectively connected to the section valve 1 and the outer ring fire cover of the burner 2, and the gas stove also includes a solenoid valve, which is a bistable valve 5. A battery 6 for powering the bistable valve 5 is provided in the stove bottom box of the gas stove, and the battery 6 is electrically connected to the bistable valve 5. The battery 6 is used to power the bistable valve 5 to meet the power saving requirements of the gas stove, so that when the user uses the gas stove, the bistable valve 5 powered by the battery 6 can be reused many times and the service life of the gas stove is increased, avoiding the exhaustion of the battery 6 caused by excessive power consumption of the solenoid valve in the gas stove during long-term use, thereby causing failure of the bistable valve 5 and reducing the user experience.

[0059] In addition, the inner ring gas channel 3 and the outer ring gas channel 4 are spaced apart, and the bistable valve 5 is arranged on one side of the outer ring gas channel 4 and away from the inner ring gas channel 3. Figure 4 and Figure 5As shown, the bistable valve 5 includes a valve body, a valve stem 51 and a valve port. The valve port is located on the side of the valve body close to the outer ring gas channel 4. The valve stem 51 is inserted into the valve port and the first end of the valve stem 51 extends out of the valve port and reciprocates along the valve port direction. The valve stem 51 sequentially extends into the connection between the inner ring gas channel 3 and the outer ring gas channel 4 and the inner ring gas channel 3. The valve stem 51 is a cylindrical structure and the valve body of the valve stem 51 and the first end of the valve stem 51 are respectively provided with a first sealing member 7 and a second sealing member 8. The first sealing member 7 and the second sealing member 8 are made of rubber or other materials in the prior art, and the first sealing member 7 is sleeved on the rod body of the valve stem 51, and the second sealing member 8 is fixedly connected to the first end of the valve stem 51. The valve stem 51 It can also drive the first seal 7 and the second seal 8 to move when the bistable valve 5 is opened or closed, thereby forming a first state and a second state. In the first state, the bistable valve 5 is energized and the valve stem 51 extends out of the valve port, thereby driving the first seal 7 to approach the outer ring gas channel 4 and close the outer ring gas channel 4, so that the gas supplied by the stage valve 1 to the outer ring fire cover is interrupted. At this time, the outer ring fire cover is extinguished, and the valve stem 51 simultaneously drives the second seal 8 to extend into the inner ring gas channel 3, and then occupies part of the gas flow area of the inner ring gas channel 3 originally used to supply gas to the inner ring fire cover through the second seal 8, so that the amount of gas flowing to the inner ring fire cover is reduced, and the fire power of the inner ring fire cover is reduced accordingly, thereby achieving the temperature control requirements of the gas stove. The second seal 8 can also seal the connection between the inner ring gas channel 3 and the outer ring gas channel 4. In the first state, part of the second seal 8 extends into the inner ring gas channel 3, and the remaining part of the second seal 8 is used to seal the connection between the inner ring gas channel 3 and the outer ring gas channel 4, so as to prevent the gas in the outer ring gas channel 4 from entering the inner ring gas channel 3 through the connection between the inner ring gas channel 3 and the outer ring gas channel 4 under temperature control requirements, further reducing the amount of gas flowing to the inner ring fire cover and improving the temperature control effect of the gas stove.

[0060] In the second state, the valve stem 51 contracts into the valve port and drives the first seal 7 and the second seal 8 to move. At this time, the first seal 7 moves, and the outer ring gas channel 4 is opened. The normal gas supply to the outer ring gas channel 4 can be achieved through the section valve 1 to ensure the normal fire power of the outer ring fire cover according to the amount of gas entering the outer ring gas channel 4 through the section valve 1. The second seal 8 moves and restores the inner ring gas channel 3 to the state where the gas flow area of the inner ring gas channel 3 is not occupied. The normal gas supply to the inner ring gas channel 3 can be achieved through the section valve 1. The inner ring fire cover also burns according to the normal fire power of the gas entering the inner ring gas channel 3 through the section valve 1. The second seal 8 still seals the connection between the inner ring gas channel 3 and the outer ring gas channel 4 at this time, avoiding the safety problem of a sudden increase in the fire power of the burner 2 caused by the gas connection between the inner ring gas channel 3 and the outer ring gas channel 4. A bistable valve 5 is used to simultaneously control the inner ring gas channel 3 and the outer ring gas channel 4 and reduce the power consumption of the gas stove, so that the gas stove not only has temperature control capabilities but also can be used for a long time, saving the manufacturing cost of the gas stove and improving the user experience.

[0061] In this embodiment, a first channel 9 is formed between the inner ring gas channel 3 and the outer ring gas channel 4. The first channel 9 is consistent with the extension direction of the valve port. The first channel 9 is a cylindrical channel and connects the inner ring gas channel 3, the outer ring gas channel 4 and the valve port of the bistable valve 5 respectively. The valve stem 51 extends into the first channel 9 and the second sealing member 8 cooperates with the inner wall of the first channel 9. In addition, the diameter of the first channel 9 is smaller than the diameter between the first channel 9 and the valve port of the bistable valve 5.

[0062] Specifically, one end of the first channel 9 is connected to the valve port of the bistable valve 5, and the other end of the first channel 9 is located on one side of the inner ring gas channel 3 and is arranged away from the outer ring gas channel 4. The stage valve 1 is provided with an inner ring gas outlet and an outer ring gas outlet. A first channel 9 is provided between the inner ring gas outlet and the inner ring gas channel 3, and between the outer ring gas outlet and the outer ring gas channel 4. The gas flows out from the inner ring gas outlet and the outer ring gas outlet and flows into the inner ring gas channel 3 and the outer ring gas channel 4 respectively through the first channel 9. By successively extending the valve stem 51 of the bistable valve 5 into the first channel 9 and the inner ring gas channel 3, the above-mentioned first state and second state can be achieved and the user's cooking needs can be met. A machining hole is formed between the first channel 9 and the valve port, the valve port extends into the machining hole, and the valve body of the bistable valve 5 is sealed with the orifice of the machining hole. The machining hole is a circular hole and the diameter of the machining hole is larger than the diameter of the first channel 9. The machining steps are as follows: first, the valve port portion accommodating the bistable valve 5 is machined, that is, the valve port extends into the machining hole, and the machining hole is connected to the outer ring gas outlet and the end of the first channel 9 respectively; secondly, the first channel 9 is machined; in order to smoothly machine the first channel 9 and allow the valve stem 51 to extend into the first channel 9, the valve port is coaxially arranged with the opening of the first channel 9 and the diameter of the first channel 9 is smaller than the diameter of the machining hole, so that the machining hole for accommodating the valve port of the bistable valve 5 is machined first, and then the first channel 9 is machined, thereby reducing the difficulty of machining.

[0063] Among them, the gas flow direction in the gas stove is as follows: in the second state, the outer ring gas channel 4 is opened, and the gas flows from the outer ring gas outlet of the stage valve 1 to the processed hole and flows into the connection between the first channel 9 and the outer ring gas channel 4, and then flows to the outer ring fire cover. The gas flow area of the inner ring gas channel 3 is not occupied, and the gas flows from the inner ring gas outlet of the stage valve 1 to the first channel 9 and flows to the inner ring gas channel 3, and then flows to the inner ring fire cover; in the first state, the outer ring gas channel 4 is closed by the first sealing member 7, and the gas cannot flow into the outer ring gas channel 4. The connection between the inner ring gas channel 3 and the outer ring gas channel 4 always remains sealed, and the inner ring gas channel 3 is consistent with the gas flow direction in the first state. The difference lies in the amount of gas flowing into the inner ring gas channel 3 in the first state and the second state.

[0064] Furthermore, in this embodiment, the inner ring gas channel 3 and the outer ring gas channel 4 are arranged in parallel, and the first channel 9 is arranged in a perpendicular direction to the inner ring gas channel 3 and the outer ring gas channel 4 .

[0065] Specifically, the inner ring gas channel 3 and the outer ring gas channel 4 corresponding to the bistable valve 5 are arranged in parallel, and the valve stem of the bistable valve 5 is arranged in a perpendicular direction to the parallel inner ring gas channel 3 and the outer ring gas channel 4, so that the valve stem 51 has a shorter stroke when it extends into the first channel 9 and the inner ring gas channel 3 in turn, and the power consumption of the bistable valve 5 is lower. At the same time, the processing of the first channel 9 is more convenient. Compared with the way that the inner ring gas channel 3 and the outer ring gas channel 4 are arranged at an angle and the first channel 9 is not arranged perpendicular to the inner ring gas channel 3 and the outer ring gas channel 4, it can reduce the space occupied by the bistable valve 5 in the stove bottom box of the gas stove caused by the first channel 9 and the inner ring gas channel 3 and the outer ring gas channel 4 being arranged in other directions, thereby improving space utilization.

[0066] In this embodiment, if Figure 5 As shown, the first sealing member 7 is sleeved on the valve stem 51 and is located between the opening of the first channel 9 and the valve port. A clamping structure is provided on the valve stem 51. The first sealing member 7 is a circular plate structure and is provided with a clamping groove that cooperates with the clamping structure. The clamping structure is provided on the side of the first sealing member 7 away from the valve port. A spring is also provided between the first sealing member 7 and the valve port. The spring provides elastic force to keep the first sealing member 7 away from the valve port. The clamping structure provides resistance to prevent the first sealing member 7 from approaching the first channel 9, thereby enabling the first sealing member 7 to move with the valve stem 51. This is a prior art and will not be elaborated on here. In the first state, the valve stem 51 drives the first sealing member 7 toward the opening of the first channel 9, thereby preventing gas from flowing into the first channel 9 and then into the outer ring gas channel 4. That is, the outer ring gas channel 4 is closed in the first state. Since the first sealing member 7 is disposed outside the first channel 9, the size of the first sealing member 7 is set to be larger than the diameter of the first channel 9 to enable the first sealing member 7 to seal the outer ring gas channel 4. Therefore, in the first state, the valve stem 51 drives the first sealing member 7 to cover the opening of the first channel 9, thereby sealing the outer ring gas channel 4. In the second state, the valve stem 51 contracts toward the valve port and drives the first sealing member 7 away from the opening of the first channel 9, thereby opening the outer ring gas channel 4 and ensuring the normal flow of gas into the outer ring gas channel 4.

[0067] In this embodiment, the first channel 9 passes through the inner ring gas channel 3, and a cut-off groove 10 is formed on the inner wall of the inner ring gas channel 3 away from the bistable valve 5. The connection between the inner ring gas channel 3 and the outer ring gas channel 4 and the first channel 9 is located on the first channel 9 and close to the two ends of the first channel 9. The cut-off groove 10 has the same shape and diameter as the first channel 9. In the first state, the valve stem 51 extends into the inner ring gas channel 3 and part of the second sealing member 8 extends into the inner ring gas channel 3, and the other part of the second sealing member 8 stays in the first channel 9. In order to avoid The first end of the valve stem 51 extends into the inner wall of the inner ring gas channel 3 away from the bistable valve 5, that is, the valve stem 51 extends too long, resulting in the gas flow area in the inner ring gas channel 3 being occupied. In order to prevent the amount of gas entering the burner from the inner ring gas channel 3 from being too small and to avoid accidental flameout of the inner ring fire cover, a diversion groove 10 is provided to ensure that the gas can smoothly enter the inner ring gas channel 3 when the inner ring gas channel 3 is in the first state of the bistable valve 5, thereby achieving the temperature control requirements of the gas stove and avoiding the poor user experience caused by accidental flameout of the burner.

[0068] In this embodiment, the first end of the valve stem 51 is provided with a snap-fit structure, and the second sealing member 8 is provided with a snap-fit groove. The snap-fit structure extends into the second sealing member 8 and cooperates with the snap-fit groove to achieve a fixed connection between the first end of the valve stem 51 and the second sealing member 8. This is prior art and will not be described in detail here. The second sealing member 8 is a cylindrical structure and matches the first channel 9. The size of the second sealing member 8 is consistent with the diameter of the first channel 9. The second sealing member 8 is used to seal the first channel 9 and thereby prevent the inner ring gas channel 3 from communicating with the outer ring gas channel 4. This prevents the residual gas in the outer ring gas channel 4 from flowing into the inner ring gas channel 3 through the first channel 9 after the outer ring gas channel 4 is closed by the first sealing member 7. In other words, the gas can only enter the burner through the inner ring gas channel 3, which reduces the gas flow area, thereby improving the temperature control effect of the gas stove.

[0069] In other embodiments of this embodiment, the second sealing member 8 may also be a conical structure, which is provided with a first end and a second end. The size of the second end is larger than the first end. The first end is used to extend into the inner ring gas channel 3 and reduce the gas flow area of the inner ring gas channel 3 in the first state. The size of the second end is consistent with the diameter of the first channel 9, thereby sealing the connection between the inner ring gas channel 3 and the outer ring gas channel 4 in the first channel 9. Its purpose is also to improve the temperature control effect of the gas stove. This is an existing technology and will not be elaborated on here.

[0070] In this embodiment, the size of the second sealing member 8 is smaller than the diameter of the inner ring gas channel 3, and the inner ring gas channel 3 is a cylindrical channel. In the first state, the second sealing member 8 extends into the inner ring gas channel 3. By making the size of the second sealing member 8 smaller than the diameter of the inner ring gas channel 3, a gap is formed between the second sealing member 8 and the inner ring gas channel 3, thereby preventing the valve stem 51 from closing the inner ring gas channel 3 when extending into the inner ring gas channel 3, thereby preventing the burner from accidentally extinguishing.

[0071] In this embodiment, a communication structure (not shown in the figure) is provided between the outer ring gas channel 4 and the first sealing member 7. The communication structure is located near the valve port of the first channel 9 and is used to connect the outer ring gas channel 4 with the outer ring gas outlet. The communication structure is a circular hole. The circular hole is located on the first channel 9 and the opening of the circular hole for connecting the outer ring gas outlet is located on the side of the outer surface of the first channel 9, that is, in a different direction from the first sealing member 7 sealing the first channel 9. In the first state, the first sealing member 7 closes the outer ring gas channel 4, and the gas flowing out of the outer ring gas outlet can enter the first channel 9 and the outer ring gas channel 4 through the communication structure. The connection point allows the gas to flow to the outer ring fire cover of the burner 2. The circular hole is set so that when the gas enters the outer ring fire cover in the first state, the outer ring fire cover maintains a "low fire" fire power, and in the first state, the second sealing member 8 occupies the gas flow area of the inner ring gas channel 3 and allows the inner ring fire cover to also maintain a "low fire" fire power, that is, the inner ring fire cover is "low fire" and the outer ring fire cover is "low fire". In this state, the thermal efficiency generated by the combustion of the burner 2 can also meet the temperature control requirements of the gas stove. The temperature of the pots on the gas stove will not rise significantly, which meets the user's needs for multiple fire power adjustments and realizes the temperature control requirements of the gas stove.

[0072] In another implementation of this embodiment, the connecting structure can also be a rectangular groove, which is also arranged on the peripheral side of the first channel 9 and connects the outer ring gas channel 4 and the outer ring gas outlet respectively, avoiding the first seal 7 while realizing the user's needs for multiple firepower adjustments and realizing the temperature control requirements of the gas stove.

[0073] Furthermore, the gas stove is also provided with a gas knob, which is connected to the stage valve 1 and is used to adjust the amount of gas supplied by the stage valve 1 to the burner 2. This is the existing technology and will not be described in detail here. In this embodiment, the rotation angle of the gas knob is set to a normal fire adjustment range and a temperature control range. The temperature control range of 80°-100° is used as an example for explanation, but the preset angle is not limited. The gas knob is connected to the bistable valve 5 and when the gas knob is rotated to 80°-100°, the gas stove enters the temperature control range, and the bistable valve 5 enters the first state after receiving the corresponding instruction. When the gas knob is rotated to other angles, the gas stove enters the normal fire adjustment range, and the bistable valve 5 enters the second state after receiving the corresponding instruction. At this time, the rotation angle of the gas knob only controls the amount of gas flowing out of the stage valve 1. Setting the temperature control range and the normal fire adjustment range on the gas knob allows the user to set the burner to other fire states when using the gas stove without other actions to put the gas stove into the temperature control range, which is more in line with the user's usage logic. For example, the gas stove directly enters the temperature control mode at "high fire" or "medium fire", thereby improving the temperature control efficiency of the gas stove and the user's usage experience.

[0074] In another embodiment of the present invention, the gas stove is provided with a control mechanism, which is connected to the bistable valve 5. When the control mechanism is turned on, the bistable valve 5 is opened accordingly and enters the first state. When the control mechanism is closed, the bistable valve 5 enters the second state. The control mechanism can be a control button in the prior art, which is set on the stove countertop. The user can directly make the gas stove enter the temperature control range and the bistable valve 5 enter the first state by pressing the control button. Of course, the control mechanism can also be other structures in the prior art that control the opening or closing of the bistable valve 5. Its purpose is to make the gas stove enter the temperature control range by other actions other than rotating the gas knob, that is, the bistable valve 5 enters the first state, thereby improving the temperature control efficiency of the gas stove and the user experience.

[0075] Example 2

[0076] The structure of the gas stove in this embodiment is roughly the same as that of the gas stove in embodiment 1. The difference is that Figure 6As shown, a third seal 11 is provided in the first channel 9. The third seal 11 is a circular plate structure and the size of the third seal 11 is consistent with the diameter of the first channel 9. The third seal 11 is located between the first seal 7 and the second seal 8 and the third seal 11 is located on the side of the outer ring gas channel 4 close to the inner ring gas channel 3. The third seal 11 is used to seal the connection between the inner ring gas channel 3 and the outer ring gas channel 4, thereby preventing gas from flowing into the inner ring gas channel 3 in the first state. The size of the second seal 8 is set to be smaller than the diameter of the first channel 9. The second seal 8 is used to occupy the gas flow area in the inner ring gas channel 3 without the need to simultaneously seal the connection between the inner ring gas channel 3 and the outer ring gas channel 4, thereby reducing the friction resistance between the second seal 8 and the inner wall of the first channel 9. The bistable valve 5 is more labor-saving when switching between the first state and the second state. Similarly, its power consumption can be further reduced to extend the service life of the gas stove.

[0077] Specifically, the third sealing member 11 is sleeved on the valve stem 51. The third sealing member 11 includes a pressure plate and a sealing ring. The sealing ring and the pressure plate can be made of rubber material or other sealing materials in the prior art. There are two pressure plates and they are located on both sides of the sealing ring. A through hole is opened on the pressure plate. The through hole is used to be sleeved on the valve stem 51. A step groove is provided in the first channel 9 at a position corresponding to the third sealing member 11. The first section of the step groove is larger than the second section. The third sealing member 11 is in contact with the first section and an elastic member is provided at the other end of the third sealing member 11. The elastic member is a spring and is sleeved on the valve stem 51. The spring The other end abuts against the first seal 7 or the clamping structure for clamping the first seal 7, and the spring provides the elastic force for the third seal 11 to abut against the step groove, so that the third seal 11 is always located at the connection between the inner ring gas channel 3 and the outer ring gas channel 4 to maintain the seal regardless of the first state or the second state. By setting the third seal 11, the second seal 8 does not need to seal the connection between the inner ring gas channel 3 and the outer ring gas channel 4, the size of the second seal 8 can be reduced and it does not need to abut against the inner wall of the first channel 9 in the first channel 9, thereby reducing friction resistance.

[0078] Example 3

[0079] The structure of the gas stove in this embodiment is roughly the same as that of the gas stove in embodiment 1. The difference is that Figure 7 and Figure 8 As shown, the bistable valve 5 is arranged on the inner ring gas outlet and the outer ring gas outlet of the stage valve 1, and the valve stem 51 of the bistable valve 5 extends into the connection between the outer ring gas outlet and the inner ring gas outlet and into the inner ring gas outlet in sequence.

[0080] Specifically, the bistable valve 5 is integrated with the section valve 1 and the valve stem 51 of the bistable valve 5 extends into the outer ring gas outlet and the inner ring gas outlet of the section valve 1, that is, the first channel 9 is connected to the outer ring gas outlet and the inner ring gas outlet respectively, and the first end of the valve stem 51 and the first seal 7 and the second seal 8 on the rod body are used to seal the outer ring gas outlet and the gas flow area extending into the inner ring gas outlet and occupying the inner ring gas outlet, and the second seal 8 can also seal the connection between the outer ring gas outlet and the inner ring gas outlet. The purpose is also to save electricity on the gas stove while achieving temperature control of the gas stove. In addition, by directly setting the bistable valve 5 at the inner ring gas outlet and the outer ring gas outlet of the section valve 1, the inner ring gas channel 3 and the outer ring gas channel 4 between the section valve 1 and the burner 2 can be staggered, and it occupies less space in the stove bottom box of the gas stove, is more convenient to set, and has a higher degree of integration of the section valve 1.

[0081] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A gas stove comprising a stage valve and a burner, wherein the stage valve and the burner are connected via an inner ring gas channel and an outer ring gas channel, respectively, and the gas stove further comprises a solenoid valve, characterized in that: The solenoid valve is a bistable valve, which is arranged between the inner ring gas channel and the outer ring gas channel, and the valve stem of the bistable valve sequentially extends into the connection between the inner ring gas channel and the outer ring gas channel and into the inner ring gas channel. The first sealing member and the second sealing member are provided on the stem body of the valve stem extending into the inner ring gas channel and on the first end of the valve stem; The bistable valve is capable of driving the valve stem to switch between a first state and a second state. When the valve stem switches to the first state, the valve stem closes the outer ring gas channel and reduces the flow area of the inner ring gas channel for gas circulation. When the valve stem switches to the second state, the valve stem opens the outer ring gas channel and restores the flow area of the inner ring gas channel to the flow area for gas flow before the valve stem extends into the inner ring gas channel; When the valve stem switches between the first state and the second state, the connection between the outer ring gas channel and the inner ring gas channel is always kept closed.

2. The gas stove according to claim 1, characterized in that: A first channel is formed between the inner ring gas channel and the outer ring gas channel. The bistable valve is located on one side of the outer ring gas channel and the valve stem extends into the first channel and the inner ring gas channel in sequence. The diameter of the first channel is smaller than the diameter between the first channel and the valve port of the bistable valve.

3. The gas stove according to claim 2, characterized in that: The inner ring gas channel is arranged in parallel with the outer ring gas channel, and the first channel is arranged in a perpendicular direction to the inner ring gas channel and the outer ring gas channel.

4. The gas stove according to claim 2, characterized in that: The first sealing member is correspondingly arranged between the first channel and the valve port of the bistable valve, and the size of the first sealing member is larger than the diameter of the first channel.

5. The gas stove according to claim 2, characterized in that: The first channel penetrates the inner ring gas channel and a cut-off groove is formed on the inner wall of the inner ring gas channel away from the bistable valve.

6. The gas stove according to claim 2, characterized in that: The second sealing member extends into the first channel and a size of the second sealing member is consistent with a diameter of the first channel.

7. The gas stove according to claim 1, characterized in that: The size of the second sealing member is smaller than the diameter of the inner ring gas passage.

8. The gas stove according to claim 2, characterized in that: A third seal is provided in the first channel, and is located between the first seal and the second seal. The third seal is located on the side of the outer ring gas channel close to the inner ring gas channel. The size of the second seal is smaller than the diameter of the first channel.

9. The gas stove according to claim 8, characterized in that: The third sealing member is sleeved on the valve stem, an elastic member is provided between the third sealing member and the second sealing member, a step groove is provided in the first channel, and the elastic member provides elastic force for the third sealing member to abut against the step groove.

10. The gas stove according to claim 2, characterized in that: A communication structure is provided between the outer ring gas channel and the first sealing member, and the communication structure is configured so that gas flows into the outer ring gas channel through the communication structure when the bistable valve is opened and the first sealing member closes the outer ring gas channel.

11. The gas stove according to claim 1, characterized in that: The bistable valve is arranged on the inner ring gas outlet and the outer ring gas outlet of the section valve, and the valve stem of the bistable valve extends into the connection between the outer ring gas outlet and the inner ring gas outlet and into the inner ring gas outlet in sequence.

12. The gas stove according to claim 1, characterized in that: The gas knob of the gas stove is connected to the bistable valve, and the rotation angle of the gas knob is set so that the bistable valve opens when the gas knob is rotated to a preset angle; Or the gas stove is provided with a control mechanism, the control mechanism is communicated with the bistable valve, and when the control mechanism is turned on, the bistable valve is opened accordingly.

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