Self-adaptive adjustment full-premixing fuel gas device

Abstract

The utility model discloses a self-adaptive adjustment full-premixing fuel gas device which comprises a pneumatic control valve module, an electric control valve module and a premixing fuel gas assembly, and the pneumatic control valve module is provided with a first gas inlet and a first gas outlet. The pneumatic control valve module can adjust a first opening threshold value between the first gas inlet and the first gas outlet according to the pressure of flowing gas, and the electric control valve module is provided with a second gas inlet and a second gas outlet and is provided with a flame detection unit; the flame detection unit is used for detecting gas pressure to form a feedback signal, the electric control valve module can adjust a second opening threshold value between the second gas inlet and the second gas outlet according to the feedback signal, and the electric control valve module and the pneumatic control valve module are connected to form at least part of a self-adaptive adjusting module. And the output end of the self-adaptive adjusting module is in butt joint with the gas inlet end of the premixing gas assembly. According to the design, the structure is simple, use is convenient and reliable, and configuration is flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of gas equipment, in particular to a self-adaptive regulating full premixed gas device. Background Art

[0002] Existing fully premixed gas devices can be fully mixed with oxygen in the air and then burned, have good combustion efficiency, and are widely favored by users. Therefore, fully premixed gas devices are also used as combustion appliances for various gases.

[0003] However, different fuels (natural gas, petroleum gas, methanol, etc.) have different supply pressures. In the past, different valve parameters and burners of different specifications needed to be configured for different fuels, so that the final output of fuels of different pressures was limited to an appropriate range to ensure normal combustion of the flame.

[0004] Therefore, in order to facilitate user use, some manufacturers will open two gas flow channels with different caliber parameters in the same gas appliance valve. When connecting fuels of different pressures, different gas flow channels are selected accordingly. However, this type of gas appliance valve is expensive and has a complex structure. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an adaptively adjustable full premixed gas device with a simple structure, convenient and reliable use, and flexible configuration.

[0006] According to the first aspect of the present invention, an adaptively adjustable fully premixed gas device includes: an air-controlled valve module having a first air inlet and a first air outlet, the air-controlled valve module being capable of adjusting a first opening threshold between the first air inlet and the first air outlet according to the pressure of the gas flowing therethrough; an electric-controlled valve module having a second air inlet and a second air outlet, the electric-controlled valve module being provided with a flame detection unit, the flame detection unit being used to detect the flame combustion state and the combustion residual air coefficient to form a feedback signal, the electric-controlled valve module being capable of adjusting a second opening threshold between the second air inlet and the second air outlet according to the feedback signal, the electric-controlled valve module and the air-controlled valve module being connected to form at least part of an adaptive adjustment module; and a premixed gas component, the output end of the adaptive adjustment module being connected to the air inlet end of the premixed gas component.

[0007] An adaptively regulating fully premixed gas device according to an embodiment of the present invention has at least the following beneficial effects:

[0008] The utility model discloses an adaptive regulation full premixed gas device, which uses an electric control valve module and the gas control valve module to be connected to form at least part of an adaptive regulation module. The input end of the adaptive regulation module can be connected to gases of different pressures, and the gas control valve module performs pressure stabilization according to the gas pressure. The regulation principle based on the gas control valve module can have a wider regulation range, and can limit the input gas pressure in a wider range to a roughly suitable output gas pressure range, and then use the electric control valve module to regulate the gas pressure with higher precision. The flame detection unit is used to detect the flame combustion state and the combustion residual air coefficient. The adjustment range of the electric control valve module is narrow, but the precision is higher. The electric control valve module adjusts the second opening threshold between the second air inlet and the second air outlet according to the feedback signal, thereby ensuring that the gas supply amount provided by the output end of the adaptive regulation module to the air inlet end of the premixed gas component is within a reasonable range. The design structure is simple, easy and reliable to use, and flexible in configuration.

[0009] According to some embodiments of the present invention, the first air outlet and the second air inlet are connected to each other, the first air inlet serves as the input end of the adaptive adjustment module, and the second air outlet serves as the output end of the adaptive adjustment module.

[0010] According to some embodiments of the present invention, the second air outlet and the first air inlet are connected to each other, the second air inlet serves as the input end of the adaptive adjustment module, and the first air outlet serves as the output end of the adaptive adjustment module.

[0011] According to some embodiments of the present invention, the air-controlled valve module includes a first valve housing, a piston member, a diaphragm and a first elastic member, the first air inlet and the first air outlet are both opened on the first valve housing, a first valve cavity is provided in the first valve housing, the diaphragm is provided in the first valve housing and is located in the first valve cavity to separate the first valve cavity into a first chamber and a second chamber, the first air inlet and the first air outlet are both connected to the first chamber, the piston member is movably provided in the first valve housing, the first elastic member is provided in the first valve housing and the first elastic member is connected to the piston member so as to drive the piston member to seal the first air inlet, the air pressure can drive the piston member to move to open the first air inlet, and the air pressure can drive the diaphragm to deform to squeeze the space of the second chamber, thereby adjusting the first opening threshold between the first air inlet and the first air outlet according to the pressure of the gas flowing through.

[0012] According to some embodiments of the present invention, the air-controlled valve module further includes a second elastic member, which is disposed in the first valve housing and located in the second chamber, and the second elastic member is connected to the diaphragm to drive the diaphragm to reset toward the first chamber.

[0013] According to some embodiments of the present invention, the electric control valve module includes a second valve housing, a valve core, a driving member and a control unit, the valve core is provided with an air supply channel, the second air inlet and the second air outlet are both opened on the second valve housing, a second valve cavity is provided in the second valve housing, the valve core is movably provided in the second valve cavity, the driving member is provided in the second valve housing and the driving member is connected to the valve core, the control unit is respectively connected to the flame detection unit and the driving member to control the driving member to drive the valve core to move according to a feedback signal, and the movement of the valve core can change the size of the connecting opening between the air supply channel and the second air inlet and the second air outlet respectively to adjust the second opening threshold.

[0014] According to some embodiments of the present invention, the self-adaptive regulating fully premixed gas device further includes a control module, which is driven to generate a control signal, and the control unit is connected to the control module to control the operation of the driving member according to the control signal.

[0015] According to some embodiments of the present invention, the premixed gas assembly includes a base shell, a burner and a blast piece, the base shell is provided with a premixed flow channel, the base shell is connected to an air inlet at the head end of the premixed flow channel, is connected to a gas inlet in the middle of the premixed flow channel and is connected to a mixing outlet at the tail end of the premixed flow channel, the blast piece is arranged on the base shell and can guide the airflow to enter from the air inlet and the gas inlet, flow through the premixed flow channel and then be output from the mixing outlet, the mixing outlet of the premixed flow channel is connected to the air inlet end of the burner, and the output end of the adaptive adjustment module is connected to the gas inlet of the premixed flow channel.

[0016] According to some embodiments of the present invention, the blowing element is located in the premixing flow channel and between the gas inlet and the mixing outlet.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 This is a principle structure diagram of one embodiment of the self-adaptive regulating full premixed gas device of the present utility model;

[0020] Figure 2 It is a three-dimensional schematic diagram of one embodiment of an electric control valve module;

[0021] Figure 3 for Figure 2A schematic diagram of a section AA of one embodiment of an electronically controlled valve module;

[0022] Figure 4 for Figure 2 A schematic diagram of a section B-B of one embodiment of the electronically controlled valve module;

[0023] Figure 5 This is a schematic diagram of the internal structure of an embodiment of an air-controlled valve module.

[0024] Reference numerals:

[0025] Air-controlled valve module 100; first valve housing 110; first air inlet 120; first air outlet 130; piston member 140; diaphragm 150; second elastic member 160; first chamber 170; second chamber 180; electric-controlled valve module 200; second valve housing 210; second air inlet 220; second air outlet 230; valve core 240; drive member 250; control unit 260; flame detection unit 270; second valve chamber 280; air supply channel 290; control module 300; premixed gas assembly 400; base housing 410; premixed flow channel 420; burner head 430; blast member 440. DETAILED DESCRIPTION

[0026] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside", are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0029] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] like Figure 1 - Figure 5 As shown, according to an embodiment of the first aspect of the present invention, an adaptively regulated fully premixed gas device includes a gas control valve module 100, an electric control valve module 200, and a premixed gas assembly 400. The gas control valve module 100 has a first gas inlet 120 and a first gas outlet 130. The gas control valve module 100 can adjust a first opening threshold between the first gas inlet 120 and the first gas outlet 130 according to the pressure of the gas flowing through. The electric control valve module 200 has a second gas inlet 220 and a second gas outlet 230. The electric control valve module 200 has a second gas inlet 220 and a second gas outlet 230. The valve control module 200 is provided with a flame detection unit 270, which is used to detect the flame combustion state and the combustion residual air coefficient to form a feedback signal. The electric control valve module 200 can adjust the second opening threshold between the second air inlet 220 and the second air outlet 230 according to the feedback signal. The electric control valve module 200 and the gas control valve module 100 are connected to form at least part of an adaptive adjustment module, and the output end of the adaptive adjustment module is connected to the air inlet end of the premixed gas assembly 400.

[0031] Among them, the input end of the adaptive regulation module can be connected to natural gas, petroleum gas, gaseous methanol, etc. After the pressure regulation processing of the gas control valve module 100 and the electric control valve module 200, fuels with different input pressures can be output under a pressure within a rough range.

[0032] The present invention's adaptively regulating fully premixed gas device utilizes an electrically controlled valve module 200 connected to the gas controlled valve module 100 to form at least part of an adaptive regulating module. The input end of the adaptive regulating module can be connected to gases of varying pressures, and the gas controlled valve module 100 performs pressure stabilization based on the gas pressure. Based on the regulation principle of the gas controlled valve module 100, a wider adjustment range can be achieved, enabling a wider range of input gas pressures to be limited to a roughly suitable output gas pressure range. The electrically controlled valve module 200 is then used to regulate the gas pressure with greater precision. The flame detection unit 270 is used to detect the gas pressure, resulting in a narrower adjustment range for the electrically controlled valve module 200, but with greater precision. The electrically controlled valve module 200 adjusts the second opening threshold between the second gas inlet 220 and the second gas outlet 230 based on a feedback signal, thereby ensuring that the gas supply from the output end of the adaptive regulating module to the inlet end of the premixed gas assembly 400 is within a reasonable range. This design is simple in structure, convenient and reliable in use, and flexible in configuration.

[0033] In some embodiments of the present invention, generally speaking, along the transmission direction of the gas, the electric control valve module 200 is located in front of the gas control valve module 100, that is, the first air outlet 130 and the second air inlet 220 are connected to each other, and the first air inlet 120 serves as the input end of the adaptive adjustment module, and the second air outlet 230 serves as the output end of the adaptive adjustment module.

[0034] Alternatively, along the transmission direction of the gas, the electric control valve module 200 is located behind the gas control valve module 100, the second air outlet 230 and the first air inlet 120 are connected to each other, the second air inlet 220 serves as the input end of the adaptive adjustment module, and the first air outlet 130 serves as the output end of the adaptive adjustment module.

[0035] In some embodiments of the present invention, Figure 5As shown, the air-controlled valve module includes a first valve housing 110, a piston member 140, a diaphragm 150 and a first elastic member (not shown in the figure), the first air inlet 120 and the first air outlet 130 are both opened on the first valve housing 110, and a first valve cavity is provided in the first valve housing 110. The diaphragm 150 is provided in the first valve housing 110 and is located in the first valve cavity to separate the first valve cavity into a first chamber 170 and a second chamber 180. The first air inlet 120 and the first air outlet 130 are both connected to the first chamber 170. The piston member 140 is movably arranged in the first valve housing 110, the first elastic member is arranged in the first valve housing 110 and the first elastic member is connected to the piston member 140 so as to drive the piston member 140 to seal the first air inlet 120, the air pressure can drive the piston member 140 to move to open the first air inlet 120, and the air pressure can drive the diaphragm 150 to deform to squeeze the space of the second chamber 180, thereby adjusting the first opening threshold between the first air inlet 120 and the first air outlet 130 according to the pressure of the gas flowing through.

[0036] The first valve housing 110 can be made of metal or alloy material, the piston 140 and the diaphragm 150 can be made of a material with a certain elasticity such as rubber or resin, the first elastic member can be an elastic rubber column, a spring or a torsion spring, the first elastic member is arranged in the first valve housing 110 and is located in the first chamber 170, the first elastic member applies force on the piston 140 so that the piston 140 is pressed against the wall surface of the first air inlet 120 connected to the first chamber 170, when the blowing member 440 in the premixed gas assembly 400 is started or there is a fuel input force driving Next, the combined force generated by the negative pressure formed by the operation of the blowing member 440 and the pressure of the fuel gas input from the outside is greater than the force applied by the first elastic member, the piston member 140 opens, and the fuel gas enters the first chamber 170, and the diaphragm 150 is deformed under pressure according to the size of the gas pressure. The greater the gas pressure, the greater the deformation of the diaphragm 150 toward the second chamber 180, and the volume of the first chamber 170 becomes larger accordingly, thereby reducing the pressure of the fuel gas output from the first gas outlet 130. Conversely, the smaller the gas pressure, the smaller the deformation of the diaphragm 150 toward the second chamber 180.

[0037] Among them, the diaphragm 150 has a certain elasticity. After the gas pressure is reduced or the blowing member 440 is turned off, the diaphragm 150 can be reset by its own elasticity. Alternatively, in some embodiments of the present invention, the gas-controlled valve module further includes a second elastic member 160, which is arranged in the first valve housing 110 and located in the second chamber 180. The second elastic member 160 is connected to the diaphragm 150 to drive the diaphragm 150 to reset toward the first chamber 170, such as Figure 5As shown, the second elastic member 160 may be a spring or an elastic rubber column, which may press against the wall surface of the diaphragm 150 located in the second chamber 180 , thereby driving the diaphragm 150 to deform and reset.

[0038] In some embodiments of the present invention, Figure 2 、 Figure 3 、 Figure 4 As shown, the electric control valve module 200 includes a second valve housing 210, a valve core 240, a driving member 250 and a control unit 260. The valve core 240 is provided with an air supply channel 290. The second air inlet 220 and the second air outlet 230 are both opened on the second valve housing 210. A second valve cavity 280 is provided in the second valve housing 210. The valve core 240 is movably provided in the second valve cavity 280. The driving member 250 is provided in the second valve housing 210 and the driving member 250 is connected to the valve core 240. The control unit 260 is respectively connected to the flame detection unit 270 and the driving member 250 to control the driving member 250 to drive the valve core 240 to move according to the feedback signal. The movement of the valve core 240 can change the size of the connection port between the air supply channel 290 and the second air inlet 220 and the second air outlet 230 respectively to adjust the second opening threshold.

[0039] Among them, the control unit 260 can be selected from the MCU or CPU and its affiliated circuits, and the driving component 250 can select a linear motor or a cylinder, etc. The driving component 250 can drive the valve core 240 to move in the second valve chamber 280, thereby adjusting the cross-sectional area of the air supply channel 290 connected to the second air inlet 220 and the second air outlet 230 respectively.

[0040] In some embodiments of the present invention, the self-adaptive fully premixed gas device further includes a control module 300 , which is driven to generate a control signal. The control unit 260 is connected to the control module 300 to control the operation of the driving member 250 according to the control signal.

[0041] Among them, the control module 300 can be a knob or a button to set the required firepower, and the required amount of gas and the corresponding fuel gas pressure target value can be converted according to the required firepower. The control unit 260 controls the valve core 240 according to the pressure target value and the feedback signal.

[0042] Specifically, the flame detection unit 270 can be a plasma probe that can detect the size of the flame, so that the control unit 260 knows whether to increase or decrease the gas pressure according to the required firepower and the size of the flame to drive the driving member 250.

[0043] In some embodiments of the present invention, Figure 1 As shown, the premixed gas assembly 400 includes a base shell 410, a burner head 430 and a blast piece 440. The base shell 410 is provided with a premixed flow channel 420. The base shell 410 is connected to an air inlet at the head end of the premixed flow channel 420, a gas inlet in the middle of the premixed flow channel 420, and a mixing outlet at the tail end of the premixed flow channel 420. The blast piece 440 is provided on the base shell 410 and can guide the airflow to enter from the air inlet and the gas inlet and then flow through the premixed flow channel 420 and be output from the mixing outlet. The mixing outlet of the premixed flow channel 420 is connected to the air inlet end of the burner head 430, and the output end of the adaptive adjustment module is connected to the gas inlet of the premixed flow channel 420.

[0044] Among them, the blower is a fan, and the blowing member 440 can drive the outside air into the premixing channel 420 from the air inlet to form a wind flow. The wind flow forms a negative pressure at the gas inlet, thereby driving the piston member 140 to open, and the fuel gas enters the premixing channel 420 from the gas inlet. After the fuel gas and the gas in the air are fully mixed, they are output from the mixing outlet at the tail end of the premixing channel 420 to provide the burner 430 with a mixed gas for combustion, which is conducive to full combustion of the gas.

[0045] In some embodiments of the present invention, the blowing member 440 is located in the premixing channel 420 and between the gas inlet and the mixing outlet. During the rotation process, the blowing member 440 can stir the air and fuel gas in the premixing channel 420, thereby being more conducive to complete combustion of the gas.

[0046] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An adaptive adjustment full premixed gas device, characterized in that: include: An air-controlled valve module having a first air inlet and a first air outlet, wherein the air-controlled valve module is capable of adjusting a first opening threshold between the first air inlet and the first air outlet according to the pressure of the gas flowing therethrough; An electrically controlled valve module having a second air inlet and a second air outlet, the electrically controlled valve module being provided with a flame detection unit, the flame detection unit being configured to detect a flame combustion state and a combustion residual air coefficient to form a feedback signal, the electrically controlled valve module being capable of adjusting a second opening threshold between the second air inlet and the second air outlet according to the feedback signal, the electrically controlled valve module being connected to the air controlled valve module to form at least part of an adaptive adjustment module; Premixed gas component, the output end of the adaptive adjustment module is connected to the air inlet end of the premixed gas component.

2. The self-adaptive fully premixed gas device according to claim 1, characterized in that: The first air outlet and the second air inlet are connected to each other, the first air inlet serves as an input end of the adaptive adjustment module, and the second air outlet serves as an output end of the adaptive adjustment module.

3. The self-adaptive fully premixed gas device according to claim 1, characterized in that: The second air outlet is connected to the first air inlet, the second air inlet serves as an input end of the adaptive adjustment module, and the first air outlet serves as an output end of the adaptive adjustment module.

4. The self-adaptive fully premixed gas device according to claim 1, characterized in that: The air-controlled valve module includes a first valve housing, a piston member, a diaphragm and a first elastic member, the first air inlet and the first air outlet are both opened on the first valve housing, a first valve cavity is provided in the first valve housing, the diaphragm is provided in the first valve housing and is located in the first valve cavity to divide the first valve cavity into a first chamber and a second chamber, the first air inlet and the first air outlet are both communicated with the first chamber, the piston member is movably provided in the first valve housing, the first elastic member is provided in the first valve housing and the first elastic member is connected to the piston member so as to drive the piston member to seal the first air inlet, air pressure can drive the piston member to move to open the first air inlet, and air pressure can drive the diaphragm to deform to squeeze the space of the second chamber, thereby adjusting the first opening threshold between the first air inlet and the first air outlet according to the pressure of the gas flowing through.

5. The self-adaptive fully premixed gas device according to claim 4, characterized in that: The air-controlled valve module further includes a second elastic member, which is disposed in the first valve housing and located in the second chamber. The second elastic member is connected to the diaphragm to drive the diaphragm to return to the first chamber.

6. The self-adaptive fully premixed gas device according to claim 1, characterized in that: The electrically controlled valve module includes a second valve housing, a valve core, a driving member and a control unit. The valve core is provided with an air supply passage. The second air inlet and the second air outlet are both opened on the second valve housing. A second valve cavity is provided in the second valve housing. The valve core is movably provided in the second valve cavity. The driving member is provided in the second valve housing and is connected to the valve core. The control unit is respectively connected to the flame detection unit and the driving member to control the driving member to drive the valve core to move according to a feedback signal. The movement of the valve core can change the size of the connecting opening between the air supply passage and the second air inlet and the second air outlet respectively to adjust the second opening threshold.

7. The self-adaptive fully premixed gas device according to claim 6, characterized in that: It also includes a control module, which is driven to generate a control signal. The control unit is connected to the control module to control the operation of the driving member according to the control signal.

8. The self-adaptive regulating fully premixed gas device according to claim 1, characterized in that: The premixed gas assembly includes a base shell, a burner head and a blast piece. The base shell is provided with a premixed flow channel. The base shell is connected to an air inlet at the head end of the premixed flow channel, a gas inlet at the middle part of the premixed flow channel and a mixing outlet at the tail end of the premixed flow channel. The blast piece is provided on the base shell and can guide the airflow to enter from the air inlet and the gas inlet, flow through the premixed flow channel and then be output from the mixing outlet. The mixing outlet of the premixed flow channel is connected to the air inlet end of the burner head, and the output end of the adaptive adjustment module is connected to the gas inlet of the premixed flow channel.

9. The self-adaptive fully premixed gas device according to claim 8, characterized in that: The blowing element is located in the premixing flow channel and between the gas inlet and the mixing outlet.

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