Multi-gas source heater

Abstract

The present invention discloses a multi-gas source heater, which comprises a main housing, an ignition device, and a pipeline system, a temperature control valve, a burner, and a switching valve arranged on the main housing; the pipeline system has a first communication state and a second communication state; the temperature control valve is connected to the pipeline system and can adjust the flow rate of the output gas; the burner includes a first nozzle and a second nozzle, and both the first nozzle and the second nozzle are connected to the pipeline system; the ignition device is connected to the burner and can ignite the burner; the switching valve is connected to the pipeline system, and the switching valve can switch the pipeline system between the first communication state and the second communication state; when the switching valve switches the pipeline system to the first communication state, the first nozzle outputs gas; when the switching valve switches the pipeline system to the second communication state, the second nozzle outputs gas, or both the first nozzle and the second nozzle output gas. The structure of the present invention is simple and reasonable, and it can be well applied to the switching and use of different gas sources.

Description

Technical Field

[0001] The present invention relates to the field of gas equipment, and particularly to a multi-gas source heater. Background Art

[0002] With the continuous development of society, the types of gases that people can choose to use are gradually increasing, such as high-calorific value gases like liquefied petroleum gas and propane, and low-calorific value gases like natural gas and artificial coal gas. Liquefied petroleum gas and natural gas are two commonly used gases at present. Due to their different calorific values and pressures, the pipeline settings and nozzle settings of the gas equipment that can be applied are also different. Existing gas heaters generally can only be applicable to one type of gas. When the user changes the type of gas used, it is generally necessary to contact the manufacturer to replace the relevant internal components in the gas fireplace so that the gas heater can be applicable to the replaced gas type. This is not only inconvenient for the user to use, but also increases the use cost. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, the present invention provides a multi-gas source heater, which has a simple and reasonable structure, can be well applicable to the switching use of the gas source environments of high-calorific value gas and low-calorific value gas, and is convenient to use.

[0004] According to the multi-gas source heater described in the embodiments of the present invention, it includes a main housing, an ignition device, and a pipeline system, a temperature control valve, a burner, and a switching valve arranged on the main housing; the pipeline system has a first connection state applicable to high-calorific value gas and a second connection state applicable to low-calorific value gas; the temperature control valve is connected to the pipeline system, and the temperature control valve can adjust the flow rate of the output gas; the burner includes a first nozzle and a second nozzle, both the first nozzle and the second nozzle are connected to the pipeline system, the first nozzle can be applicable to high-calorific value gas, and the second nozzle can be applicable to low-calorific value gas; the ignition device is connected to the burner and can ignite the burner; the switching valve is connected to the pipeline system, and the switching valve can switch the pipeline system between the first connection state and the second connection state; when the switching valve switches the pipeline system to the first connection state, the first nozzle outputs gas; when the switching valve switches the pipeline system to the second connection state, the second nozzle outputs gas, or both the first nozzle and the second nozzle output gas.

[0005] The multi-gas-source heater according to the embodiment of the present invention has at least the following beneficial effects: During use, gas is input into the temperature control valve. The temperature control valve adjusts the flow rate of the output gas and outputs it to the pipeline system. The switching valve controls the switching of the connection state in the pipeline system. When the gas used is high-calorific value gas, the user can switch the pipeline system to the first connection state through the switching valve. At this time, the gas is output to the burner through the first nozzle, and is ignited by the ignition device, and the gas in the burner burns for heating. When the gas used is low-calorific value gas, the user can switch the pipeline system to the second connection state through the switching valve. At this time, the gas is output to the burner through the second nozzle or the gas is output to the burner through the first nozzle and the second nozzle together, and is ignited by the ignition device, and the gas in the burner burns for heating. The structure of the present invention is simple. By switching the connection state of the pipeline system through the switching valve, the gas can be output through different nozzles, which can be better applied to the switching use of the gas source environments of high-calorific value gas and low-calorific value gas, and is convenient for the user to switch the use of the gas source selection.

[0006] According to some embodiments of the present invention, a pressure stabilizing valve connected to the pipeline system is provided on the main housing. The pressure stabilizing valve can output the gas with stable pressure. The pressure stabilizing valve has a first pressure stabilizing state suitable for high-calorific value gas and a second pressure stabilizing state suitable for low-calorific value gas. By providing a pressure stabilizing valve that can be suitable for different gas source environments, the gas pressure in the pipeline system can be stabilized, avoiding that too large gas pressure is likely to damage the pipeline system and other internal valve bodies, improving the reliability. At the same time, the pressure stabilizing valve can also be switched to different use states according to the type of gas source used, and can be better applied to the switching use of the gas source environments of high-calorific value gas and low-calorific value gas.

[0007] According to some embodiments of the present invention, the pressure stabilizing valve includes a first housing, a second housing, a diaphragm, a pressure stabilizing rod, an elastic component, and an adjusting component. The first housing is provided with an air inlet passage and an air outlet passage. The diaphragm is connected between the first housing and the second housing. The diaphragm is sealingly connected to the first housing to form a first cavity, and the diaphragm is sealingly connected to the second housing to form a second cavity. The air inlet passage and the air outlet passage are both communicated with the first cavity. The adjusting component is connected to the second housing. The elastic component is connected to the adjusting component and acts on the diaphragm. The pressure stabilizing rod is connected to the diaphragm. The diaphragm can deform and extend to drive the pressure stabilizing rod to move relative to the first housing. The pressure stabilizing rod can cooperate with the air outlet of the air inlet passage to adjust the air flow rate. The adjusting component can adjust the elastic force acting on the diaphragm by the elastic component, so that the pressure stabilizing valve can be switched between a first pressure stabilizing state and a second pressure stabilizing state. When in use, the pressure stabilizing valve drives the pressure stabilizing rod to move through the deformation and extension of the diaphragm. The pressure stabilizing rod can cooperate with the air outlet of the air inlet passage to adjust the air flow rate, so as to achieve the purpose of stabilizing the pressure. When switching the gas, the elastic force acting on the diaphragm is adjusted through the adjusting component, so as to adjust and change the ability of the diaphragm to deform and extend, so that the pressure stabilizing valve can be applicable to two kinds of gases with different pressures, namely high-calorie gas and low-calorie gas, and realize the switching between the first pressure stabilizing state and the second pressure stabilizing state. Its structure is simple and easy to use.

[0008] According to some embodiments of the present invention, the switching valve includes a linkage member, and the linkage member is connected to the adjusting component. When the switching valve switches the pipeline system between a first connection state and a second connection state, the switching valve can drive the adjusting component through the linkage member. When the gas source in use is switched, according to the type of the switched gas source, the connection condition of the pipeline system is adjusted and changed through the switching valve, so that the pipeline system is in a connection state suitable for the gas source. And, when the switching valve performs switching adjustment, the switching valve can be linked with the adjusting component through the linkage member, so that the pressure stabilizing valve can be switched between a first pressure stabilizing state and a second pressure stabilizing state, which facilitates the use operation when switching the gas. Its structure is simple and reasonable, avoiding the need for multiple switching adjustments of the switching valve and the pressure stabilizing valve, and is easy to use.

[0009] According to some embodiments of the present invention, the adjusting assembly includes a first connecting member, a second connecting member, a moving member, and a first elastic member. The first connecting member and the second connecting member are both connected to the second housing. The moving member is slidably connected to the first connecting member. Two ends of the first elastic member are respectively connected to the first connecting member and the moving member. The moving member can abut against the linkage member under the action of the first elastic member. The elastic assembly includes a second elastic member and a third elastic member. One end of the second elastic member is connected to the moving member, and the third elastic member is connected to the second connecting member and acts on the diaphragm. The switching valve includes a third housing and a plug valve stem. The plug valve stem is movably inserted into the third housing. The linkage member is connected to the plug valve stem. The plug valve stem can move relative to the third housing and can drive the linkage member to move relative to the third housing. The linkage member can push the moving member to move relative to the second housing, so that the other end of the second elastic member acts on the diaphragm. When it is necessary to switch the pressure stabilizing valve to the second pressure stabilizing state, the linkage member is driven to move by the plug valve stem. The linkage member pushes the moving member to move, so that the second elastic member acts on the diaphragm. At this time, the second elastic member and the third elastic member act on the diaphragm, and the diaphragm is not easily deformed and extended under the influence of the gas pressure. The pressure stabilizing valve can be applied to high-calorific value gas. When it is necessary to switch the pressure stabilizing valve to the first pressure stabilizing state, the linkage member is reset and moved by the plug valve stem. Under the action of the first elastic member, the moving member abuts against the linkage rod and moves and resets with it, driving the second elastic member to reset and move, so that it disengages from the diaphragm. At this time, only the third elastic member acts on the diaphragm, and the diaphragm is easily deformed and extended under the influence of the gas pressure. The pressure stabilizing valve can be applied to low-calorific value gas. Its structure is simple and reasonable, which is convenient to realize the switching between the first pressure stabilizing state and the second pressure stabilizing state of the pressure stabilizing valve, and it is convenient to realize that the linkage member can link the switching valve and the pressure stabilizing valve, which is convenient to use.

[0010] According to some embodiments of the present invention, the switching valve further includes a plug valve core. A valve core channel and a plurality of connection channels communicating with the valve core channel are provided on the third housing. The connection channels are connected to the pipeline system. The plug valve core is rotatably arranged in the valve core channel. One end of the plug valve stem extends into the valve core channel and is provided with a clamping portion protruding radially. A clamping groove for the clamping portion to be inserted is correspondingly provided on the plug valve core. The plug valve stem can drive the plug valve core to rotate through the cooperation of the clamping portion and the clamping groove. The plug valve core can connect or close the valve core channel and the connection channels. By providing the cooperation of the clamping portion and the clamping groove, the clamping portion is inserted into the clamping groove on the plug valve core, so that the plug valve stem can drive the plug valve core to rotate. The plug valve core connects or closes the connection channels and the valve core channel, thereby realizing that the switching valve can adjust the connection condition between multiple connection channels to adjust and change the connection state of the pipeline system. Its structure is simple and convenient for manufacturing and processing, and the transmission connection is stable and reliable.

[0011] According to some embodiments of the present invention, the switching valve further includes a fourth elastic member. A first limit card slot and a second limit card slot are provided in the valve core channel. The first limit card slot has a first slot bottom, and the second limit card slot has a second slot bottom. The first slot bottom and the second slot bottom are provided with a spacing distance along the axis direction of the valve core channel. The fourth elastic member is connected between the plug valve stem and the plug valve core. The clamping portion can be inserted into the first limit card slot and abut against the first slot bottom under the action of the fourth elastic member. The clamping portion can be inserted into the second limit card slot and abut against the second slot bottom under the action of the fourth elastic member. By providing the first limit card slot and the second limit card slot, and the first slot bottom and the second slot bottom are provided with a spacing distance along the axis direction of the valve core channel. When the pressure stabilizing valve switches to different pressure stabilizing states, the clamping portion of the plug valve stem is correspondingly clamped at different limit card slots and abuts against the corresponding slot bottom positions, so that the plug valve stem can drive the linkage member to maintain the state of pushing the adjusting assembly or release the state of pushing the adjusting assembly. Its structure is simple and reasonable, and the pressure stabilizing valve can be maintained in the first pressure stabilizing state or the second pressure stabilizing state, improving the reliability of the present invention.

[0012] According to some embodiments of the present invention, the burner includes a combustion housing and an ejector tube connected to the combustion housing. A gas chamber is provided inside the combustion housing, and a combustion structure for outputting the gas in the gas chamber is provided on the combustion housing. The ejector tube includes a mixing channel, a first channel, and a second channel. The outlet ends of the first channel and the second channel are interconnected and both communicate with the mixing channel. An acute angle is formed between the first channel and the second channel. The first nozzle is correspondingly connected to the inlet of the first channel, and the axis of the first nozzle is collinear with the axis of the first channel. The second nozzle is correspondingly connected to the inlet of the second channel, and the axis of the second nozzle is collinear with the axis of the second channel. The mixing channel communicates with the gas chamber, and the ignition device can ignite the gas output at the combustion structure. During use, both the first nozzle and the second nozzle are connected to the pipeline system. By switching the connection status of the pipeline system through a switching valve, when one of the first nozzle and the second nozzle outputs gas, the gas draws in the surrounding air into the corresponding channel of the ejector tube. The two are mixed and output to the gas chamber through the mixing channel, and then output through the gas structure and ignited by the ignition device to achieve combustion heating. When both the first nozzle and the second nozzle output gas, the two nozzles respectively eject gas into the corresponding channels. The arrangement of the two channels can reduce the mutual interference between the air flow strands at the initial stage of entrainment and increase the primary air supply. When the gas is ejected from the nozzle opening at high speed, the surrounding air is drawn into the intake channel, and the two start to mix. When the gas enters the mixing channel from the first channel and the second channel, due to the acute angle between the two channels, the two air flows are ejected along the angle direction and start to converge towards the middle, and finally mix again in the mixing channel, enabling the gas and air to achieve better mixing, which is beneficial to improving the combustion performance of the burner, achieving better full combustion of the gas, and increasing the thermal efficiency. Its structure is simple and reasonable, and it can be applied to different gas ejection situations, with good applicability.

[0013] According to some embodiments of the present invention, a flow dividing plate is connected to the outlet end of the mixing channel. A plurality of flow dividing holes are provided on the flow dividing plate, and a buffer baffle is connected to the flow dividing plate. By providing the flow dividing plate and a plurality of flow dividing holes on the flow dividing plate, the gas can be evenly dispersed and output to the gas chamber from the flow dividing holes, avoiding excessive concentrated output of the gas, thereby improving the combustion effect of the present invention. At the same time, the buffer baffle can obstruct the gas to slow down the gas flow rate, and can prevent the combustion flame of the burner from being too high due to too fast air flow ejection, thereby improving the use safety of the present invention.

[0014] According to some embodiments of the present invention, the ignition device includes a first pilot flame assembly, a second pilot flame assembly, an ignition control assembly, and a feedback control module. The first pilot flame assembly includes a first ignition needle, a first thermocouple, and a third nozzle. The second pilot flame assembly includes a second ignition needle, a second thermocouple, and a fourth nozzle. Both the third nozzle and the fourth nozzle are connected to the pipeline system. The third nozzle is applicable to high calorific value gas, and the fourth nozzle is applicable to low calorific value gas. Both the first ignition needle and the second ignition needle are electrically connected to the ignition control assembly. The ignition control assembly can cause the first ignition needle and the second ignition needle to generate electric sparks. The feedback control module is electrically connected to the temperature control valve, the first thermocouple, and the second thermocouple respectively. Both the first thermocouple and the second thermocouple can feedback the electric potential to the feedback control module according to the heating situation. The feedback control module can control the opening and closing of the temperature control valve according to the feedback of the first thermocouple and the second thermocouple. During use, the third nozzle and the fourth nozzle output gas according to the connection state of the pipeline system. The ignition control assembly causes the first ignition needle and the second ignition needle to generate electric sparks to ignite the gas output by the third nozzle and the fourth nozzle. The combustion of the gas causes the first thermocouple and the second thermocouple to sense and feedback the electric potential to the feedback control module. The feedback control module controls the opening and closing of the temperature control valve according to the feedback electric potential situation, thereby realizing the ignition operation of the ignition device, and can feedback the ignition situation to the feedback control module through the thermocouple to control the opening and closing of the temperature control valve through the feedback control module, thereby improving the use safety of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0016] Figure 1 is a schematic structural diagram of a multi-gas source heater according to an embodiment of the present invention;

[0017] Figure 2 is Figure 1 a schematic structural diagram of the switching valve and the pressure stabilizing valve in

[0018] Figure 3 is Figure 2 a partial schematic structural diagram of the switching valve and the pressure stabilizing valve in

[0019] Figure 4 is Figure 2 a cross-sectional schematic diagram of the switching valve and the pressure stabilizing valve in

[0020] Figure 5 is Figure 2 a cross-sectional schematic diagram of the switching valve and the pressure stabilizing valve in

[0021] Figure 6 For Figure 2 Figure 3 of the sectional view of the switching valve and the pressure stabilizing valve;

[0022] Figure 7 For Figure 2 Sectional structure view of the third housing in;

[0023] Figure 8 For Figure 1 Partial structure view of the burner and the ignition device in;

[0024] Figure 9 For Figure 8 Sectional structure view of the burner in;

[0025] Figure 10 Schematic view of the gas path structure of the pipeline system in the first embodiment of the present invention in the first connected state;

[0026] Figure 11 For Figure 10 Schematic view of the gas path structure of the pipeline system in the second connected state in;

[0027] Figure 12 Schematic view of the gas path structure of the pipeline system in the first embodiment of the present invention in the first connected state;

[0028] Figure 13 For Figure 12 Schematic view of the gas path structure of the pipeline system in the second connected state in;

[0029] Figure 14 Schematic view of the gas path structure of the pipeline system in the first embodiment of the present invention in the first connected state;

[0030] Figure 15 For Figure 14 Schematic view of the gas path structure of the pipeline system in the second connected state in.

[0031] Reference numerals:

[0032] Main housing 100;

[0033] Pipeline system 200, first pipeline 210, second pipeline 220, third pipeline 230, fourth pipeline 240, fifth pipeline 250, sixth pipeline 260, seventh pipeline 270;

[0034] Temperature control valve 300;

[0035] Burner 400, first nozzle 410, second nozzle 420, combustion housing 430, gas chamber 431, combustion structure 432, ejector pipe 440, first channel 441, second channel 442, mixing channel 443, shunt plate 450, shunt hole 451, buffer baffle 452;

[0036] Ignition device 500, first pilot flame assembly 510, first ignition needle 511, first thermocouple 512, third nozzle 513, second pilot flame assembly 520, second ignition needle 521, second thermocouple 522, fourth nozzle 523, ignition control assembly 530;

[0037] Switching valve 600, linkage member 610, third housing 620, spool passage 621, connection passage 622, first limiting card slot 623, second limiting card slot 624, first slot bottom 625, second slot bottom 626, plug valve stem 630, clamping portion 631, clamping piece 632, fifth elastic member 633, plug valve core 640, clamping slot 641, fourth elastic member 650;

[0038] Pressure stabilizing valve 700, first housing 710, intake passage 711, outlet passage 712, first cavity 713, second housing 720, second cavity 721, diaphragm 730, pressure stabilizing rod 740, elastic assembly 750, second elastic member 751, third elastic member 752, adjustment assembly 760, first connecting member 761, second connecting member 762, moving member 763, first elastic member 764. Detailed implementation manners

[0039] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0040] In the description of the present invention, it should be understood that if the orientation description is involved, such as the orientation or positional relationship indicated by up, down, etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0041] In the description of the present invention, if words such as several, greater than, less than, exceeding, above, below, within, etc. appear, among them, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number.

[0042] If the first and second are described only for the purpose of distinguishing technical features, they should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0043] In the description of the present invention, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0044] Referring to Figure 1 , a multi-gas-source heater includes a main housing 100, an ignition device 500, and a pipeline system 200, a temperature control valve 300, a burner 400, and a switching valve 600 provided on the main housing 100; the pipeline system 200 has a first connection state suitable for high-calorific-value gas and a second connection state suitable for low-calorific-value gas; the temperature control valve 300 is connected to the pipeline system 200, and the temperature control valve 300 can adjust the flow rate of the output gas; the burner 400 includes a first nozzle 410 and a second nozzle 420, both the first nozzle 410 and the second nozzle 420 are connected to the pipeline system 200, the first nozzle 410 is suitable for high-calorific-value gas, and the second nozzle 420 is suitable for low-calorific-value gas; the ignition device 500 is connected to the burner 400 and can ignite the burner 400; the switching valve 600 is connected to the pipeline system 200, and the switching valve 600 can switch the pipeline system 200 between the first connection state and the second connection state; when the switching valve 600 switches the pipeline system 200 to the first connection state, the first nozzle 410 outputs gas; when the switching valve 600 switches the pipeline system 200 to the second connection state, the second nozzle 420 outputs gas, or both the first nozzle 410 and the second nozzle 420 output gas.

[0045] During use, gas is input into the temperature control valve 300, the temperature control valve 300 adjusts the flow rate of the output gas and outputs it into the pipeline system 200, and the switching valve 600 controls the switching of the connection state in the pipeline system 200. When the gas used is high-calorific-value gas, the user can switch the pipeline system 200 to the first connection state through the switching valve 600. At this time, the gas is output to the burner 400 through the first nozzle 410, ignited by the ignition device 500, and the gas in the burner 400 burns for heating; when the gas used is low-calorific-value gas, the user can switch the pipeline system 200 to the second connection state through the switching valve 600. At this time, the gas is output to the burner 400 through the second nozzle 420 or the gas is output to the burner 400 through both the first nozzle 410 and the second nozzle 420, ignited by the ignition device 500, and the gas in the burner 400 burns for heating. The structure of the present invention is simple. By switching the connection state of the pipeline system 200 through the switching valve 600, the gas can be output through different nozzles, which can better adapt to the switching use of the gas source environments of high-calorific-value gas and low-calorific-value gas, and is convenient for the user to switch the use of the gas source selection.

[0046] In practical applications, the specific structural forms of the pipeline system 200, the burner 400, and the switching valve 600 can be set accordingly according to actual usage needs, and will not be described in detail here. Specific descriptions will be given below. Since the composition and principle of the temperature control valve 300 in the embodiments of the present invention are known to those of ordinary skill in the art, they will not be described in detail here.

[0047] In some embodiments, a pressure stabilizing valve 700 connected to the pipeline system 200 is provided on the main housing 100. The pressure stabilizing valve 700 can output gas with stable pressure. The pressure stabilizing valve 700 has a first pressure stabilizing state suitable for high-calorie gas and a second pressure stabilizing state suitable for low-calorie gas.

[0048] It can be understood that as Figure 1 shown, by setting the pressure stabilizing valve 700 that can be suitable for different gas source environments, the gas enters the pipeline system 200 through the pressure stabilizing valve 700, which can stabilize the gas pressure in the pipeline system 200, avoid the excessive gas pressure from easily damaging the pipeline system 200 and other internal valve bodies, improve reliability. At the same time, the pressure stabilizing valve 700 can also be switched to different usage states according to the type of gas source used, and can be better suitable for the switching use of gas source environments of high-calorie gas and low-calorie gas. In practical applications, the specific structural form of the pressure stabilizing valve 700 can be set accordingly according to actual usage needs, and will not be described in detail here. Specific descriptions will be given below.

[0049] In some embodiments, the pressure stabilizing valve 700 includes a first housing 710, a second housing 720, a diaphragm 730, a pressure stabilizing rod 740, an elastic component 750, and an adjusting component 760. The first housing 710 is provided with an air inlet passage 711 and an air outlet passage 712. The diaphragm 730 is connected between the first housing 710 and the second housing 720. The diaphragm 730 is hermetically connected to the first housing 710 to form a first cavity 713. The diaphragm 730 is hermetically connected to the second housing 720 to form a second cavity 721. Both the air inlet passage 711 and the air outlet passage 712 communicate with the first cavity 713. The adjusting component 760 is connected to the second housing 720. The elastic component 750 is connected to the adjusting component 760 and acts on the diaphragm 730. The pressure stabilizing rod 740 is connected to the diaphragm 730. The diaphragm 730 can deform and extend to drive the pressure stabilizing rod 740 to move relative to the first housing 710. The pressure stabilizing rod 740 can cooperate with the air outlet of the air inlet passage 711 to adjust the air volume. The adjusting component 760 can adjust the elastic force of the elastic component 750 acting on the diaphragm 730, so that the pressure stabilizing valve 700 can be switched between the first pressure stabilizing state and the second pressure stabilizing state.

[0050] It can be understood that as Figure 3 、 Figure 4 and Figure 5As shown, during use, gas enters the first cavity 713 from the intake passage 711. The diaphragm 730 deforms and extends according to the intake pressure, so as to drive the pressure stabilizing rod 740 to move up and down relative to the first housing 710. The lower end of the pressure stabilizing rod 740 extends into the intake passage 711 and can shield the air outlet of the intake passage 711. The pressure stabilizing rod 740 moves up and down to cooperate with the air outlet of the intake passage 711, changing the air outlet area of the intake passage 711 to adjust the ventilation volume, thereby achieving the purpose of pressure stabilization; when switching the gas, the elastic force acting on the diaphragm 730 is adjusted through the adjusting assembly 760, so as to adjust and change the ability of the diaphragm 730 to deform and extend, enabling the pressure stabilizing valve 700 to be applicable to two different pressure gases, namely high-calorie gas and low-calorie gas, and realizing the switching between the first pressure stabilizing state and the second pressure stabilizing state. Its structure is simple and easy to use.

[0051] During actual application, the specific structures of the elastic assembly 750 and the adjusting assembly 760 can be set accordingly according to actual use needs and will not be described in detail here. Specific descriptions will be given below; in addition to the above-mentioned pressure stabilizing method, the structure of the pressure stabilizing valve 700 can also be a lever type. The diaphragm 730 deforms and extends to change the air outlet area of the intake passage 711 through a lever structure to achieve the purpose of pressure stabilization. The specific structure of the pressure stabilizing valve 700 can be changed accordingly according to actual use needs, which can be understood by those skilled in the art.

[0052] In some embodiments, the switching valve 600 includes a linkage member 610. The linkage member 610 is connected to the adjusting assembly 760. When the switching valve 600 switches the pipeline system 200 between the first connection state and the second connection state, the switching valve 600 can drive the adjusting assembly 760 through the linkage member 610.

[0053] It can be understood that as Figure 2 、 Figure 3 and Figure 4 shown, when the gas source used is switched, according to the type of the switched gas source, the connection condition of the pipeline system 200 is adjusted and changed through the switching valve 600, so that the pipeline system 200 is in a connection state suitable for the gas source. And, while the switching valve 600 performs switching adjustment, the switching valve 600 can be linked with the adjusting assembly 760 through the linkage member 610, so that the pressure stabilizing valve 700 switches between the first pressure stabilizing state and the second pressure stabilizing state, facilitating the use operation when switching the gas. Its structure is simple and reasonable, avoiding the need for multiple switching adjustments of the switching valve 600 and the pressure stabilizing valve 700, and is convenient to use. During actual application, the specific linkage method between the switching valve 600 and the pressure stabilizing valve 700 can be set accordingly according to actual use needs and will not be described in detail here. Specific descriptions will be given below.

[0054] In some embodiments, the adjusting assembly 760 includes a first connecting member 761, a second connecting member 762, a moving member 763, and a first elastic member 764. Both the first connecting member 761 and the second connecting member 762 are connected to the second housing 720. The moving member 763 is slidably connected to the first connecting member 761. Two ends of the first elastic member 764 are respectively connected to the first connecting member 761 and the moving member 763. The moving member 763 can abut against the linkage member 610 under the action of the first elastic member 764. The elastic assembly 750 includes a second elastic member 751 and a third elastic member 752. One end of the second elastic member 751 is connected to the moving member 763. The third elastic member 752 is connected to the second connecting member 762 and acts on the diaphragm 730. The switching valve 600 includes a third housing 620 and a plug valve stem 630. The plug valve stem 630 is movably inserted into the third housing 620. The linkage member 610 is connected to the plug valve stem 630. The plug valve stem 630 can move relative to the third housing 620 and can drive the linkage member 610 to move relative to the third housing 620. The linkage member 610 can push the moving member 763 to move relative to the second housing 720, so that the other end of the second elastic member 751 acts on the diaphragm 730.

[0055] It can be understood that as Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, a clamping piece 632 and a fifth elastic member 633 are further connected to the plug valve stem 630. The clamping piece 632 is clamped and fixed on the plug valve stem 630. Two ends of the fifth elastic member 633 are respectively connected to the third housing 620 and the linkage member 610. The linkage member 610 can abut against the clamping piece 632 under the action of the fifth elastic member 633. Both the first connecting member 761 and the second connecting member 762 are threadedly connected to the second housing 720. A connecting portion for connecting with the second elastic member 751 is provided at the lower end of the moving member 763. The connecting portion is threadedly connected to the moving member 763. The threaded connection of the first connecting member 761 can facilitate the installation and replacement of the moving member 763 and is convenient for the use of the moving member 763. The threaded connection of the second connecting member 762 enables the elastic force of the third elastic member 752 acting on the diaphragm 730 to be adjustable according to the up and down movement of the spiral engagement of the second connecting member 762, improving the applicability of the pressure stabilizing valve 700. The threaded connection between the connecting portion and the moving member 763 can adjust the initial position of the second elastic member 751, making its moving stroke adjustable, thereby changing the elastic force when it acts on the diaphragm 730 and further improving the applicability of the pressure stabilizing valve 700.

[0056] When it is necessary to switch the pressure stabilizing valve 700 to the second pressure stabilizing state, the plug valve stem 630 is pressed to move downward relative to the third housing 620, and the linkage member 610 is driven to move downward relative to the third housing 620 through the clamping piece 632, compressing the fifth elastic member 633. The linkage member 610 pushes the moving member 763 to move downward relative to the second housing 720, so that the lower end of the second elastic member 751 acts on the diaphragm 730. At this time, the second elastic member 751 and the third elastic member 752 act on the diaphragm 730, and the diaphragm 730 is less likely to be deformed and extended under the influence of the gas pressure. The pressure stabilizing valve 700 can be applied to high calorific value gas; when it is necessary to switch the pressure stabilizing valve 700 to the first pressure stabilizing state, the plug valve stem 630 is moved upward and reset relative to the third housing 620. The linkage member 610 moves upward and resets under the action of the fifth elastic member 633 and abuts against the clamping piece 632. The moving member 763 abuts against the linkage member 610 under the action of the first elastic member 764 and moves and resets with it, driving the second elastic member 751 to reset and move, so that its lower end disengages from the diaphragm 730. At this time, the third elastic member 752 acts on the diaphragm 730, and the diaphragm 730 is more likely to be deformed and extended under the influence of the gas pressure. The pressure stabilizing valve 700 can be applied to low calorific value gas. Its structure is simple and reasonable, which is convenient to realize the switching between the first pressure stabilizing state and the second pressure stabilizing state of the pressure stabilizing valve 700, and it is convenient to realize that the linkage member 610 can drive the switching valve 600 and the pressure stabilizing valve 700 to be linked, which is convenient to use.

[0057] In actual application, the elastic component 750 can also be composed of one elastic member, and the elastic force acting on the diaphragm 730 is changed by the up and down movement of the moving member 763. Of course, the elastic component 750 can also include three elastic members or more, and its setting can be correspondingly set according to actual use needs. The adjusting component 760 can change correspondingly according to the specific structure of the elastic component 750; the linkage connection mode between the linkage member 610 and the adjusting component 760 can also be realized through a wedge-shaped structure. The wedge block rotates with the plug valve stem 630 and squeezes the moving member 763 to move it downward. The linkage member 610 can also be fixedly connected to the plug valve stem 630 to realize the movement driven by the plug valve stem 630. The specific structure of the linkage member 610 can be changed correspondingly according to actual use needs, and no limitation is made here.

[0058] In some embodiments, the switching valve 600 also includes a plug valve core 640, a valve core channel 621 and a plurality of connecting channels 622 connected to the valve core channel 621 are provided on the third shell 620, the connecting channel 622 is connected to the pipeline system 200, the plug valve core 640 is rotatably arranged in the valve core channel 621, one end of the plug valve stem 630 extends into the valve core channel 621 and is provided with a radially protruding clamping portion 631, and the plug valve core 640 is correspondingly provided with a clamping groove 641 for the clamping portion 631 to be clamped, the plug valve stem 630 can drive the plug valve core 640 to rotate through the cooperation of the clamping portion 631 and the clamping groove 641, and the plug valve core 640 can connect or close the valve core channel 621 and the connecting channel 622.

[0059] It is understandable that if Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, there are four connecting channels 622, each of which is connected to a different pipeline in the pipeline system 200. When in use, the plug valve stem 630 moves downward so that the clamping portion 631 is clamped into the clamping groove 641, so that the plug valve stem 630 can drive the plug valve core 640 to rotate, and the plug valve core 640 connects or closes the connecting channel 622 with the valve core channel 621 to change the connection between different connecting channels 622 through the valve core channel 621, so that the switching valve 600 can adjust the connection between multiple connecting channels 622 to adjust and change the connection state of the pipeline system 200. Its structure is simple, and it is convenient to manufacture and process, and the transmission connection is stable and reliable. In actual application, in addition to setting the clamping portion 631, the plug valve stem 630 can also be connected to the plug valve core 640 by sleeve-arranging a connecting piece or other connecting structure, such as a toggle structure, abutment structure, etc. The specific structure of the switching valve 600 can also be changed accordingly according to actual use needs, which can be understood by those skilled in the art.

[0060] In some embodiments, the switching valve 600 also includes a fourth elastic member 650, and a first limit slot 623 and a second limit slot 624 are provided in the valve core channel 621, the first limit slot 623 has a first slot bottom 625, and the second limit slot 624 has a second slot bottom 626, and the first slot bottom 625 and the second slot bottom 626 are spaced apart along the axial direction of the valve core channel 621, the fourth elastic member 650 is connected between the plug valve stem 630 and the plug valve core 640, and the clamping portion 631 can be clamped into the first limit slot 623 and abut against the first slot bottom 625 under the action of the fourth elastic member 650, and the clamping portion 631 can be clamped into the second limit slot 624 and abut against the second slot bottom 626 under the action of the fourth elastic member 650.

[0061] It is understandable that if Figure 3 , Figure 4 ,Figure 6 and Figure 7 As shown in Figure 7 , both the first limit card slot 623 and the second limit card slot 624 are located at the upper end of the spool valve passage 621, and the first slot bottom 625 is above the second slot bottom 626, so that there is a spacing distance between the first slot bottom 625 and the second slot bottom 626 along the axis direction of the spool valve passage 621. When the pressure stabilizing valve 700 is in the first pressure stabilizing state, the clamping portion 631 of the plug valve stem 630 is correspondingly clamped at the first limit card slot 623 and abuts against the first slot bottom 625; when switched to the second pressure stabilizing state, the plug valve stem 630 moves downward and rotates, so that the clamping portion 631 disengages from the first limit card slot 623 and rotates to the position of the second limit card slot 624. Subsequently, the clamping portion 631 is clamped into the second limit card slot 624 under the action of the fourth elastic member 650 and abuts against the second slot bottom 626. Since there is a height difference between the second slot bottom 626 and the first slot bottom 625 along the axis direction of the spool valve passage 621, the plug valve stem 630 can drive the linkage member 610 to keep pushing the moving member 763, so that the pressure stabilizing valve 700 can remain in the second pressure stabilizing state; when it is switched to the first pressure stabilizing state, similarly, the plug valve stem 630 moves downward and rotates, so that the clamping portion 631 disengages from the second limit card slot 624 and rotates to the position of the first limit card slot 623. Subsequently, the clamping portion 631 is clamped into the first limit card slot 623 under the action of the fourth elastic member 650 and abuts against the first slot bottom 625, and the linkage member 610 releases the pushing state of the moving member 763, and the pressure stabilizing valve 700 can remain in the first pressure stabilizing state. Its structure is simple and reasonable, and the pressure stabilizing valve 700 can be kept in the first pressure stabilizing state or the second pressure stabilizing state, improving the reliability of the present invention.

[0062] In actual application, in addition to setting the limit card slot structure to enable the plug valve stem 630 to maintain its state, so that the pressure stabilizing valve 700 can be maintained in two states, a magnetic attraction structure can also be set at the corresponding position of the spool valve passage 621 to realize the retention of the plug valve stem 630, or a clamping structure capable of clamping and fixing the plug valve stem 630 is provided on the third housing 620. Specifically, it can be changed according to actual use needs and is not limited herein.

[0063] In some embodiments, the burner 400 includes a combustion housing 430 and an ejector tube 440 connected to the combustion housing 430. A gas chamber 431 is provided in the combustion housing 430, and a combustion structure 432 for outputting the gas in the gas chamber 431 is provided on the combustion housing 430. The ejector tube 440 includes a mixing channel 443, a first channel 441, and a second channel 442. The outlet ends of the first channel 441 and the second channel 442 are interconnected and both communicate with the mixing channel 443. An acute angle is formed between the first channel 441 and the second channel 442. The first nozzle 410 is correspondingly connected to the inlet of the first channel 441, and the axis of the first nozzle 410 is collinear with the axis of the first channel 441. The second nozzle 420 is correspondingly connected to the inlet of the second channel 442, and the axis of the second nozzle 420 is collinear with the axis of the second channel 442. The mixing channel 443 communicates with the gas chamber 431, and the ignition device 500 can ignite the gas output from the combustion structure 432.

[0064] It is understood that, as Figure 1 , Figure 8 and Figure 9As shown, the combustion structure 432 is a flame hole provided on the combustion housing 430. The inlet ends of the first channel 441 and the second channel 442 are both flared structures to facilitate the entrainment of surrounding air by the gas. During use, the first nozzle 410 and the second nozzle 420 are both connected to the pipeline system 200. By switching the connection status of the pipeline system 200 through the switching valve 600, when one of the first nozzle 410 and the second nozzle 420 outputs gas, the gas entrains the surrounding air into the corresponding channel of the entrainment pipe 440. The two are mixed and output to the gas chamber 431 through the mixing channel 443, and then output through the gas structure and ignited by the ignition device 500 to achieve combustion heating. When both the first nozzle 410 and the second nozzle 420 output gas, the two nozzles respectively eject gas into the corresponding channels. The settings of the first channel 441 and the second channel 442 can reduce the mutual interference between the air flow strands in the initial stage of entrainment and increase the primary air supply. When the gas jets out from the nozzle orifice at high speed, it entrains the surrounding air into the intake channel 711, and the two start to mix. When the gas enters the mixing channel 443 from the first channel 441 and the second channel 442, due to the acute angle between the two channels, the two air flows are ejected along the angle direction and start to converge towards the middle, and finally mix again in the mixing channel 443. The coaxial setting of the first nozzle 410 and the first channel 441 and the coaxial setting of the second nozzle 420 and the second channel 442 facilitate the entry of the gas into the corresponding channels, and at the same time facilitate the convergence and mixing of the two air flows along the angle direction of the two channels, enabling better mixing of the gas and air, which is beneficial to improving the combustion performance of the burner 400, achieving better full combustion of the gas, and improving the thermal efficiency. Its structure is simple and reasonable, and it can be applied to different jetting situations, with good applicability.

[0065] In actual application, the combustion structure 432 can also be a porous ceramic plate. The angle between the first channel 441 and the second channel 442 can be set accordingly according to actual use needs, such as 10 degrees, 15 degrees, etc. The first nozzle 410 and the second nozzle 420 can both be set accordingly according to actual use needs. Since the composition of the nozzles mentioned in the embodiments of the present invention is known to those of ordinary skill in the art, it will not be described in detail here.

[0066] In some embodiments, a flow dividing plate 450 is connected to the outlet end of the mixing channel 443. The flow dividing plate 450 is provided with a plurality of flow dividing holes 451, and a buffer baffle 452 is connected to the flow dividing plate 450. It can be understood that, such as Figure 9As shown, the outlet end of the mixing channel 443 is connected to a flow splitting plate 450. A plurality of flow splitting holes 451 are provided on the flow splitting plate 450. After the fuel gas is output from the mixing channel 443 and passes through the flow splitting plate 450, it can be evenly dispersed and output from the flow splitting holes 451 to the fuel gas chamber 431, avoiding the occurrence of a smaller combustion area and incomplete combustion caused by the over-concentrated output of the fuel gas, thereby improving the combustion effect of the present invention. At the same time, the buffer baffle 452 can obstruct the fuel gas to slow down the flow rate of the fuel gas, and can avoid the combustion flame of the burner 400 from being too high due to the too-fast ejection of the gas flow, thereby improving the use safety of the present invention. In actual application, the specific structures of the flow splitting plate 450, the flow splitting holes 451 and the buffer baffle 452 can be set accordingly according to actual use needs, and are not limited herein.

[0067] In some embodiments, the ignition device 500 includes a first pilot flame component 510, a second pilot flame component 520, an ignition control component 530 and a feedback control module. The first pilot flame component 510 includes a first ignition needle 511, a first thermocouple 512 and a third nozzle 513. The second pilot flame component 520 includes a second ignition needle 521, a second thermocouple 522 and a fourth nozzle 523. Both the third nozzle 513 and the fourth nozzle 523 are connected to the pipeline system 200. The third nozzle 513 is applicable to high-calorific-value fuel gas, and the fourth nozzle 523 is applicable to low-calorific-value fuel gas. Both the first ignition needle 511 and the second ignition needle 521 are electrically connected to the ignition control component 530. The ignition control component 530 can cause the first ignition needle 511 and the second ignition needle 521 to generate electric sparks. The feedback control module is electrically connected to the temperature control valve 300, the first thermocouple 512 and the second thermocouple 522 respectively. Both the first thermocouple 512 and the second thermocouple 522 can feedback the electric potential to the feedback control module according to the heat receiving situation. The feedback control module can control the opening and closing of the temperature control valve 300 according to the feedback of the first thermocouple 512 and the second thermocouple 522.

[0068] It can be understood that, such as Figure 1 and Figure 8As shown, during use, the third nozzle 513 and the fourth nozzle 523 output gas according to the connection state of the pipeline system 200. The ignition control component 530 causes the first ignition needle 511 and the second ignition needle 521 to generate electric sparks to ignite the gas output by the third nozzle 513 and the fourth nozzle 523. The combustion of the gas causes the first thermocouple 512 and the second thermocouple 522 to sense and feedback the potential to the feedback control module. The feedback control module controls the opening and closing of the temperature control valve 300 according to the feedback potential situation, thereby realizing the ignition operation of the ignition device 500, and can feedback the ignition situation to the feedback control module through the thermocouple to control the opening and closing of the temperature control valve 300 through the feedback control module. When the gas used corresponds to the connection state of the pipeline system 200, there is a large potential difference between the potentials feedback by the first thermocouple 512 and the second thermocouple 522. The feedback control module controls the temperature control valve 300 to remain normally open. When the gas used does not correspond to the connection state of the pipeline system 200, there is a small potential difference or no potential difference between the potentials feedback by the first thermocouple 512 and the second thermocouple 522. The feedback control module controls the temperature control valve 300 to close, disconnecting the gas output, thereby improving the use safety of the present invention.

[0069] It can be understood that referring to Figure 10 and Figure 11 , it is the first embodiment of the pipeline system 200. The pipeline system 200 includes a first pipeline 210, a second pipeline 220, a third pipeline 230, a fourth pipeline 240, a fifth pipeline 250, a sixth pipeline 260, and a seventh pipeline 270. The first pipeline 210 connects the pressure stabilizing valve 700 and the temperature control valve 300. The second pipeline 220 connects the temperature control valve 300 and the switching valve 600. The third pipeline 230 connects the temperature control valve 300 and the switching valve 600. The fourth pipeline 240 connects the switching valve 600 and the first nozzle 410. The fifth channel connects the switching valve 600 and the second nozzle 420. The sixth channel connects the third channel and the third nozzle 513. The seventh channel connects the switching valve 600 and the fourth nozzle 523. Referring to Figure 10 , when the pipeline system 200 is in the first connection state, the gas enters the pressure stabilizing valve 700 and is transported to the temperature control valve 300 through the first pipeline 210. The temperature control valve 300 outputs the gas to the second pipeline 220 and the third pipeline 230. The switching valve 600 disconnects the connections with the fifth pipeline 250 and the seventh pipeline 270 respectively, and connects the second pipeline 220 and the fourth pipeline 240. The gas in the second pipeline 220 is output to the fourth pipeline 240 through the switching valve 600 and is output by the first nozzle 410. The gas in the third pipeline 230 passes through the sixth pipeline 260 and is output by the third nozzle 513. The first thermocouple 512 feedbacks a high potential, and the second thermocouple 522 has no potential feedback, forming a potential difference. The feedback control module controls the temperature control valve 300 to remain normally open. Referring to Figure 11, the pipeline system 200 is in the second connected state. Gas enters the pressure regulator valve 700 and is transported to the temperature control valve 300 through the first pipeline 210. The temperature control valve 300 outputs the gas to the second pipeline 220 and the third pipeline 230. The switching valve 600 connects the second pipeline 220 to the fourth pipeline 240 and the fifth channel respectively, and connects the third channel and the seventh channel. The gas in the second pipeline 220 is output to the fourth pipeline 240 and the fifth channel through the switching valve 600, and is output by the first nozzle 410 and the second nozzle 420. Since the first nozzle 410 is suitable for high calorific value gas and is suitable for gas with relatively high pressure, when low calorific value gas is output from the first nozzle 410, the amount of gas that can be output is less. The gas in the third pipeline 230 is output by the third nozzle 513 and the fourth nozzle 523 through the sixth pipeline 260 and the seventh pipeline 270 respectively. The second thermocouple 522 feeds back a high potential. Similarly, since the amount of gas that can be output is less when low calorific value gas is output from the third nozzle 513, the first thermocouple 512 feeds back a low potential. A potential difference is formed between the two, and the feedback control module controls the temperature control valve 300 to remain normally open.

[0070] Referring to Figure 12 and Figure 13 , which is the second embodiment of the pipeline system 200. The pipeline system 200 includes a first pipeline 210, a second pipeline 220, a third pipeline 230, a fourth pipeline 240, a fifth pipeline 250, a sixth pipeline 260, and a seventh pipeline 270. The first pipeline 210 connects the pressure regulator valve 700 and the temperature control valve 300. The second pipeline 220 connects the temperature control valve 300 and the switching valve 600. The third pipeline 230 connects the temperature control valve 300 and the switching valve 600. The fourth pipeline 240 connects the switching valve 600 and the first nozzle 410. The fifth channel connects the switching valve 600 and the second nozzle 420. The sixth channel connects the switching valve 600 and the third nozzle 513. The seventh channel connects the switching valve 600 and the fourth nozzle 523. Referring to Figure 12 , the pipeline system 200 is in the first connected state. Gas enters the pressure regulator valve 700 and is transported to the temperature control valve 300 through the first pipeline 210. The temperature control valve 300 outputs the gas to the second pipeline 220 and the third pipeline 230. The switching valve 600 disconnects the connections with the fifth pipeline 250 and the seventh pipeline 270 respectively, and connects the second pipeline 220 and the fourth pipeline 240 and connects the third channel and the sixth channel. The gas in the second pipeline 220 is output to the fourth pipeline 240 through the switching valve 600 and is output by the first nozzle 410. The gas in the third pipeline 230 is output to the sixth pipeline 260 through the switching valve 600 and is output by the third nozzle 513. The first thermocouple 512 feeds back a high potential, and the second thermocouple 522 has no potential feedback, forming a potential difference. The feedback control module controls the temperature control valve 300 to remain normally open. Referring to Figure 13, the pipeline system 200 is in the second connected state. The gas enters the pressure stabilizing valve 700 and is transported to the temperature control valve 300 through the first pipeline 210. The temperature control valve 300 outputs the gas to the second pipeline 220 and the third pipeline 230. The switching valve 600 connects the second pipeline 220 with the fifth channel and connects the third channel with the seventh channel. The gas in the second pipeline 220 is output to the fifth channel through the switching valve 600 and is output by the second nozzle 420. The gas in the third pipeline 230 is output by the fourth nozzle 523 through the seventh pipeline 270. The second thermocouple 522 feeds back a high potential, and the first thermocouple 512 has no potential feedback, forming a potential difference. The feedback control module controls the temperature control valve 300 to remain normally open.

[0071] Referring to Figure 14 and Figure 15 , which is the third embodiment of the pipeline system 200. The pipeline system 200 includes a first pipeline 210, a second pipeline 220, a third pipeline 230, a fourth pipeline 240, a fifth pipeline 250, a sixth pipeline 260, and a seventh pipeline 270. The first pipeline 210 connects the pressure stabilizing valve 700 and the temperature control valve 300. The second pipeline 220 connects the temperature control valve 300 and the switching valve 600. The third pipeline 230 connects the temperature control valve 300 and the switching valve 600. The fourth pipeline 240 connects the second channel 442 and the first nozzle 410. The fifth channel connects the switching valve 600 and the second nozzle 420. The sixth channel connects the third channel and the third nozzle 513. The seventh channel connects the switching valve 600 and the fourth nozzle 523. Referring to Figure 14 , the pipeline system 200 is in the first connected state. The gas enters the pressure stabilizing valve 700 and is transported to the temperature control valve 300 through the first pipeline 210. The temperature control valve 300 outputs the gas to the second pipeline 220 and the third pipeline 230. The switching valve 600 disconnects the connections with the fifth pipeline 250 and the seventh pipeline 270 respectively. The gas in the second pipeline 220 is output by the first nozzle 410 through the fourth pipeline 240. The gas in the third pipeline 230 is output by the third nozzle 513 through the sixth pipeline 260. The first thermocouple 512 feeds back a high potential, and the second thermocouple 522 has no potential feedback, forming a potential difference. The feedback control module controls the temperature control valve 300 to remain normally open. Referring to Figure 15, the pipeline system 200 is in the second connected state. The gas enters the pressure stabilizing valve 700 and is transported to the temperature control valve 300 through the first pipeline 210. The temperature control valve 300 outputs the gas to the second pipeline 220 and the third pipeline 230. The switching valve 600 connects the second pipeline 220 with the fifth channel and connects the third channel with the seventh channel. The gas in the second pipeline 220 is output by the corresponding first nozzle 410 and second nozzle 420 respectively through the fourth pipeline 240 and the fifth channel. The gas in the third pipeline 230 is output by the third nozzle 513 and the fourth nozzle 523 respectively through the sixth pipeline 260 and the seventh pipeline 270. The second thermocouple 522 feeds back a high electric potential. Similarly, since less gas can be output when the low calorific value gas is output from the third nozzle 513, the first thermocouple 512 feeds back a low electric potential, forming an electric potential difference between the two. The feedback control module controls the temperature control valve 300 to remain normally open.

[0072] In actual application, the specific structures of the ignition device 500 and the pipeline system 200 can also be set accordingly according to actual usage needs, which can be understood by those skilled in the art. Since the other constitutions and principles of the ignition needle, thermocouple and ignition control component 530 mentioned in the embodiments of the present invention are known to those of ordinary skill in the art, they will not be described in detail here.

[0073] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made without departing from the spirit of the present invention within the knowledge scope of those of ordinary skill in the art.

Claims

1. A multi-gas-source heater, characterized in that, Comprising: A main housing (100); A pipeline system (200), disposed on the main housing (100), and having a first connection state suitable for high-calorific-value gas and a second connection state suitable for low-calorific-value gas; A temperature control valve (300), disposed on the main housing (100) and connected to the pipeline system (200), and the temperature control valve (300) can adjust the flow rate of the output gas; A burner (400), disposed on the main housing (100), the burner (400) includes a first nozzle (410) and a second nozzle (420), both the first nozzle (410) and the second nozzle (420) are connected to the pipeline system (200), the first nozzle (410) is suitable for high-calorific-value gas, the second nozzle (420) is suitable for low-calorific-value gas, the burner (400) further includes a combustion housing (430) and an ejector pipe (440) connected to the combustion housing (430), a gas chamber (431) is provided in the combustion housing (430), a combustion structure (432) for outputting the gas in the gas chamber (431) is provided on the combustion housing (430), the ejector pipe (440) includes a mixing channel (443), a first channel (441) and a second channel (442), the outlet ends of the first channel (441) and the second channel (442) are interconnected and both are connected to the mixing channel (443), an acute angle is formed between the first channel (441) and the second channel (442), the first nozzle (410) is correspondingly connected to the inlet of the first channel (441), the axis of the first nozzle (410) is collinear with the axis of the first channel (441), the second nozzle (420) is correspondingly connected to the inlet of the second channel (442), the axis of the second nozzle (420) is collinear with the axis of the second channel (442), and the mixing channel (443) is connected to the gas chamber (431); An ignition device (500), connected to the burner (400), and capable of igniting the gas output at the combustion structure (432); A switching valve (600), disposed on the main housing (100) and connected to the pipeline system (200), and the switching valve (600) can switch the pipeline system (200) between the first connection state and the second connection state; When the switching valve (600) switches the pipeline system (200) to the first connection state, the first nozzle (410) outputs gas; when the switching valve (600) switches the pipeline system (200) to the second connection state, the second nozzle (420) outputs gas, or both the first nozzle (410) and the second nozzle (420) output gas; A pressure stabilizing valve (700) is provided on the main housing (100) and connected to the pipeline system (200). The pressure stabilizing valve (700) includes a first housing (710), a second housing (720), a diaphragm (730), a pressure stabilizing rod (740), an elastic component (750), and an adjusting component (760). The first housing (710) is provided with an air inlet passage (711) and an air outlet passage (712). The diaphragm (730) is connected between the first housing (710) and the second housing (720). The diaphragm (730) is hermetically connected to the first housing (710) to form a first cavity (713), and the diaphragm (730) is hermetically connected to the second housing (720) to form a second cavity (721). The air inlet passage (711) and the air outlet passage (712) both communicate with the first cavity (713). The adjusting component (760) is connected to the second housing (720). The elastic component (750) is connected to the adjusting component (760) and acts on the diaphragm (730). The pressure stabilizing rod (740) is connected to the diaphragm (730). The diaphragm (730) can deform and extend to drive the pressure stabilizing rod (740) to move relative to the first housing (710). The pressure stabilizing rod (740) can cooperate with the air outlet of the air inlet passage (711) to adjust the air volume, so that the pressure stabilizing valve (700) can output the gas with stable pressure. The pressure stabilizing valve (700) has a first pressure stabilizing state suitable for high calorific value gas and a second pressure stabilizing state suitable for low calorific value gas. The adjusting component (760) can adjust the elastic force of the elastic component (750) acting on the diaphragm (730), so that the pressure stabilizing valve (700) can switch between the first pressure stabilizing state and the second pressure stabilizing state. The switching valve (600) further includes a linkage member (610). The linkage member (610) is connected to the adjusting component (760). When the switching valve (600) switches the pipeline system (200) between the first connection state and the second connection state, the switching valve (600) can drive the adjusting component (760) through the linkage member (610).

2. The multi-gas source heater according to claim 1, wherein the adjusting component (760) includes a first connecting member (761), a second connecting member (762), a moving member (763), and a first elastic member (764). The first connecting member (761) and the second connecting member (762) are both connected to the second housing (720). The moving member (763) is slidably connected to the first connecting member (761). Two ends of the first elastic member (764) are respectively connected to the first connecting member (761) and the moving member (763). The moving member (763) can abut against the linkage member (610) under the action of the first elastic member (764); The elastic component (750) includes a second elastic member (751) and a third elastic member (752). One end of the second elastic member (751) is connected to the moving member (763), and the third elastic member (752) is connected to the second connecting member (762) and acts on the diaphragm (730). The switching valve (600) includes a third housing (620) and a plug valve stem (630). The plug valve stem (630) is movably inserted into the third housing (620). The linkage member (610) is connected to the plug valve stem (630). The plug valve stem (630) can move relative to the third housing (620) and can drive the linkage member (610) to move relative to the third housing (620). The linkage member (610) can push the moving member (763) to move relative to the second housing (720), so that the other end of the second elastic member (751) acts on the diaphragm (730).

3. The multi-gas source heater according to claim 2, wherein The switching valve (600) further includes a plug valve core (640). A valve core channel (621) and a plurality of connection channels (622) communicating with the valve core channel (621) are provided on the third housing (620). The connection channels (622) are connected to the pipeline system (200). The plug valve core (640) is rotatably arranged in the valve core channel (621). One end of the plug valve stem (630) extends into the valve core channel (621) and is provided with a radially protruding clamping portion (631). A clamping groove (641) for the clamping portion (631) to be inserted into is correspondingly provided on the plug valve core (640). The plug valve stem (630) can drive the plug valve core (640) to rotate through the cooperation of the clamping portion (631) and the clamping groove (641). The plug valve core (640) can connect or close the communication between the valve core channel (621) and the connection channels (622).

4. The multi-gas source heater according to claim 3, wherein The switching valve (600) further includes a fourth elastic member (650). A first limiting slot (623) and a second limiting slot (624) are provided in the valve core channel (621). The first limiting slot (623) has a first slot bottom (625), and the second limiting slot (624) has a second slot bottom (626). The first slot bottom (625) and the second slot bottom (626) are spaced apart along the axial direction of the valve core channel (621). The fourth elastic member (650) is connected between the plug valve stem (630) and the plug valve core (640). The clamping portion (631) can be clamped into the first limiting slot (623) and abutted against the first slot bottom (625) under the action of the fourth elastic member (650). The clamping portion (631) can be clamped into the second limiting slot (624) and abutted against the second slot bottom (626) under the action of the fourth elastic member (650).

5. The multi-gas source heater according to claim 1, wherein An outlet end of the mixing channel (443) is connected with a flow dividing plate (450). A plurality of flow dividing holes (451) are provided in the flow dividing plate (450), and a buffer baffle (452) is connected to the flow dividing plate (450).

6. The multi-gas source heater according to claim 1, wherein The ignition device (500) includes a first pilot flame assembly (510), a second pilot flame assembly (520), an ignition control assembly (530) and a feedback control module. The first pilot flame assembly (510) includes a first ignition needle (511), a first thermocouple (512) and a third nozzle (513). The second pilot flame assembly (520) includes a second ignition needle (521), a second thermocouple (522) and a fourth nozzle (523). The third nozzle (513) and the fourth nozzle (523) are both connected to the pipeline system (200). The third nozzle (513) is applicable to high calorific value gas, and the fourth nozzle (523) is applicable to low calorific value gas. The first ignition needle (511) and the second ignition needle (521) are both electrically connected to the ignition control assembly (530). The ignition control assembly (530) can cause the first ignition needle (511) and the second ignition needle (521) to generate electric sparks. The feedback control module is electrically connected to the temperature control valve (300), the first thermocouple (512) and the second thermocouple (522) respectively. The first thermocouple (512) and the second thermocouple (522) can both feedback electric potential to the feedback control module according to the heating condition. The feedback control module can control the opening and closing of the temperature control valve (300) according to the feedback conditions of the first thermocouple (512) and the second thermocouple (522).

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