CN111207396A - Double-gas-source gas thermostat - Google Patents

Abstract

The invention discloses a double-gas-source gas thermostat, which comprises: a housing; the temperature control valve is arranged in the shell; the two ever-burning flame nozzle assemblies are arranged in the shell; the double-gas-source pressure stabilizing valve is arranged in the shell and communicated with the temperature control valve, and can adjust output pressure according to different gas sources; the comprehensive switching valve is arranged in the shell, communicated with the temperature control valve and communicated with the two ever-burning open flame nozzle assemblies and can switch gas transmission modes aiming at different gas sources; and the ignition switch is arranged in the shell and can ignite, and the ignition switch is mechanically linked with the double-gas-source pressure stabilizing valve and the comprehensive switching valve respectively, so that the ignition switch can regulate and control the double-gas-source pressure stabilizing valve and the comprehensive switching valve. The double-gas-source pressure stabilizing valve and the comprehensive switching valve are regulated and controlled by the ignition switch, so that the double-gas-source pressure stabilizing valve can be suitable for any two different gas sources such as liquefied petroleum gas, natural gas, artificial gas and the like, the gas using range is expanded, the defect of the old fixed gas mode is greatly improved, the higher requirement of the market is met, and more choices and more convenience are brought to merchants and consumers.

Description

Double-gas-source gas thermostat

Technical Field

The invention relates to the field of gas equipment, in particular to a double-gas-source gas thermostat.

Background

At present, gas devices on the market all adopt a fixed gas mode, such as a liquefied petroleum gas mode or a natural gas mode, because different gas sources require different gas pressures during combustion, and combustion values of different gas sources are also different, the gas devices need different configurations and factory settings, which causes that manufacturing plants need to repeatedly deal with different types of gas sources, the production difficulty is large, the scheduling is difficult, and often, customers often have purchase errors due to the fact that the customers do not know the requirements of the gas sources and the types of the gas devices, so that disputes are caused, and the situation is a great trouble and a difficult problem for both merchants and the customers.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a double-gas-source gas thermostat which can be suitable for any two different gas sources such as liquefied petroleum gas, natural gas, artificial gas and the like.

A dual-source gas thermostat according to an embodiment of a first aspect of the invention comprises: a housing; the temperature control valve is arranged in the shell; the two open flame nozzle assemblies are arranged in the shell; the double-gas-source pressure stabilizing valve is arranged in the shell and communicated with the temperature control valve, and can adjust output pressure according to different gas sources; the comprehensive switching valve is arranged in the shell, communicated with the temperature control valve and communicated with the two open flame nozzle assemblies and capable of switching gas transmission modes according to different gas sources; the ignition switch is arranged in the shell and can ignite, and the ignition switch is mechanically linked with the double-gas-source pressure stabilizing valve and the comprehensive switching valve respectively, so that the ignition switch can regulate and control the double-gas-source pressure stabilizing valve and the comprehensive switching valve.

According to some embodiments of the invention, the ignition switch comprises: a support; the ignition button is arranged on the bracket; the base is arranged on the bracket; the adjusting mandrel is rotatably arranged on the base in a penetrating mode, an adjusting structure is arranged between the adjusting mandrel and the base, and the adjusting mandrel can slide relative to the base through the adjusting structure when rotating relative to the base; the rotating cap is slidably sleeved on the base, the adjusting mandrel penetrates through the rotating cap, and a linkage structure is arranged between the rotating cap and the adjusting mandrel, so that the rotating cap can slide relative to the adjusting mandrel when being pressed by external force and can drive the adjusting mandrel to rotate when being rotated by the external force; the elastic resetting piece is arranged between the rotating cap and the base; the push plate is arranged on the rotating cap, and the rotating cap can drive the push plate to be pressed down on the ignition button when being pressed by external force; one end of each of the two pull ropes is connected to the lower end of the adjusting mandrel, the other end of one of the pull ropes is connected to the double-gas-source pressure stabilizing valve, and the other end of the other pull rope is connected to the comprehensive switching valve.

According to some embodiments of the invention, the adjusting structure includes at least two protruding portions arranged at the top of the base at intervals and a first fixture block radially arranged on the adjusting mandrel, a positioning groove is formed between two adjacent protruding portions, a guide inclined surface is arranged on a side surface of each protruding portion, a limiting groove is arranged on the top of each protruding portion, when the adjusting mandrel rotates, the first fixture block can be clamped into the positioning groove or the limiting groove under the guide effect of the guide inclined surface, and when the rotating cap is pulled by an external force, the adjusting mandrel can be driven by the linkage structure to slide relative to the base.

According to some embodiments of the invention, an outer tube is sleeved on the pull rope, a clamping plate is arranged below the adjusting mandrel on the bracket, a first limiting notch is arranged on the clamping plate and corresponds to the outer tube outside the pull rope, and the size of the first limiting notch is matched with the diameter of the pull rope.

According to some embodiments of the invention, the dual gas supply pressure maintaining valve comprises: the pressure stabilizing valve body comprises an upper valve body and a lower valve body; the diaphragm assembly is clamped between the upper valve body and the lower valve body and divides the pressure stabilizing valve body into an upper cavity and a lower cavity, the cavity surrounded by the diaphragm assembly and the lower valve body comprises an air inlet channel and an air outlet channel, the air inlet channel is communicated with an air source, and the air outlet channel is communicated with the temperature control valve; the pressure regulating rod is slidably arranged in the upper valve body in a penetrating mode, a first transmission piece is arranged at one end, far away from the diaphragm assembly, of the pressure regulating rod, the ignition switch is mechanically linked with the first transmission piece, and the first transmission piece can drive the pressure regulating rod to slide towards the direction far away from the diaphragm assembly when being driven by the ignition switch; the first pressure spring is sleeved on the pressure adjusting rod, a first abutting part is arranged on the upper valve body, a second abutting part is arranged on the pressure adjusting rod, one end of the first pressure spring abuts against the first abutting part, the other end of the first pressure spring abuts against the second abutting part, and the pressure adjusting rod can act on the diaphragm assembly under the driving of the elastic force of the first pressure spring; the second pressure spring is sleeved on the first pressure spring, one end of the second pressure spring is abutted against the first abutting part, and the other end of the second pressure spring is abutted against the diaphragm assembly; the air inlet channel is arranged on the diaphragm assembly, the air outlet channel is arranged on the diaphragm assembly, the air inlet channel is arranged on the diaphragm assembly, the air outlet channel is arranged on the air outlet channel, the air outlet channel is arranged on the air inlet channel, the air outlet channel is arranged on the air outlet channel, the air outlet channel.

According to some embodiments of the invention, the first abutment is an adjustment knob, the adjustment knob and the upper valve body being threadedly connected.

According to some embodiments of the present invention, the second abutting portion is sleeved on the pressure adjusting rod and is in threaded connection with the pressure adjusting rod.

According to some embodiments of the invention, the integrated switching valve comprises: a switching valve body; the first gas transmission channel is arranged in the valve body of the switching valve, a main fire gas inlet is formed in the first gas transmission channel, and the main fire gas inlet is communicated with the temperature control valve; the second gas transmission channel is communicated with the first gas transmission channel; the main fire nozzle is arranged on the switching valve body, a first nozzle opening and a second nozzle opening are formed in the main fire nozzle, the first nozzle opening is communicated with the first gas transmission channel, and the second nozzle opening is communicated with the second gas transmission channel; the third gas transmission channel is arranged in the valve body of the switching valve, the third gas transmission channel is provided with an ever-burning flame gas inlet, the third gas transmission channel is provided with a first gas outlet and a second gas outlet, the ever-burning flame gas inlet is communicated with the temperature control valve, the first gas outlet is communicated with one of the ever-burning flame nozzle assemblies, and the second gas outlet is communicated with the other ever-burning flame nozzle assembly; the switching device is arranged on the switching valve body and is provided with a first gas transmission mode and a second gas transmission mode, when the switching device is switched to the first gas transmission mode, only the first nozzle opening and the first gas outlet can give out gas, and when the switching device is switched to the second gas transmission mode, both the first nozzle opening and the second nozzle opening can give out gas and the first gas outlet is used for giving out gas and switching to the second gas outlet to give out gas.

According to some embodiments of the invention, the switching device comprises: the first push-pull rod is slidably inserted into the second gas transmission channel, a second transmission piece is arranged at the upper part of the first push-pull rod, the ignition switch is mechanically linked with the second transmission piece, the second transmission piece can drive the first push-pull rod to slide relative to the second gas transmission channel when being driven by the ignition switch, a first blocking structure is arranged between the first push-pull rod and the second gas transmission channel, and the first blocking structure can block a gas circuit communicated with the second nozzle opening when the first push-pull rod slides relative to the second gas transmission channel; the first push-pull rod is slidably inserted into the third gas transmission channel, a transmission structure is arranged between the first push-pull rod and the second push-pull rod, the second push-pull rod can be driven to slide relative to the third gas transmission channel through the transmission structure when the first push-pull rod slides relative to the third gas transmission channel, a second blocking structure is arranged between the second push-pull rod and the third gas transmission channel, and the second blocking structure can block a gas circuit communicated with the first gas outlet or a gas circuit communicated with the second gas outlet when the second push-pull rod slides relative to the third gas transmission channel; the third pressure spring is sleeved on the first push-pull rod, the lower end of the first push-pull rod is provided with a butting part, one end of the third pressure spring abuts against the butting part, and the other end of the third pressure spring abuts against the switching valve body; and one end of the fourth pressure spring is abutted against the lower end of the second push-pull rod, and the other end of the fourth pressure spring is abutted against the switching valve body.

According to some embodiments of the invention, the transmission structure comprises a linkage member arranged at the top of the valve body of the switching valve and a limiting seat arranged at the top of the valve body of the switching valve, the upper part of the first push-pull rod is provided with a mounting groove, one end of the linkage member is arranged in the mounting groove, the other end of the linkage member abuts against the upper end of the second push-pull rod, the limiting seat is provided with a limiting through hole, and the linkage member penetrates through the limiting through hole.

The double-gas-source gas thermostat provided by the embodiment of the invention at least has the following beneficial effects: when the liquefied petroleum gas is used, the double-gas-source pressure stabilizing valve adjusts the output pressure of fuel gas through the regulation and control of the ignition switch so as to adapt to the liquefied petroleum gas, and meanwhile, the comprehensive switching valve switches a gas transmission mode through the regulation and control of the ignition switch so as to adapt to the liquefied petroleum gas; when natural gas is used, the double-gas-source pressure stabilizing valve adjusts the output pressure of the fuel gas through the regulation and control of the ignition switch so as to adapt to the natural gas, and meanwhile, the comprehensive switching valve switches a gas transmission mode through the regulation and control of the ignition switch so as to adapt to the natural gas; the gas utilization range is expanded, the defect of the traditional fixed gas mode is greatly improved, the higher requirement of the market is met, and more choices and more convenience are brought to merchants and consumers.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

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

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

fig. 2 is a schematic view of the overall structure of an ignition switch in the embodiment of the invention;

FIG. 3 is a schematic cross-sectional view of an ignition switch in an embodiment of the present invention;

FIG. 4 is a schematic view of a partial structure of an ignition switch in the embodiment of the present invention;

FIG. 5 is an exploded view of the base, adjustment mandrel and spin cap of an embodiment of the present invention;

FIG. 6 is an exploded top view of the base, adjustment mandrel, and spin cap of an embodiment of the present invention;

FIG. 7 is an exploded view of an adjustment mandrel and linkage block in accordance with an embodiment of the present invention;

FIG. 8 is a schematic diagram of the overall structure of a dual gas source pressure maintaining valve in an embodiment of the invention;

FIG. 9 is an enlarged view of a portion of FIG. 8 at A;

FIG. 10 is a first schematic cross-sectional view of a dual gas source pressure maintaining valve in an embodiment of the present invention;

FIG. 11 is an enlarged view of a portion of FIG. 10 at B;

FIG. 12 is a second schematic cross-sectional view of a dual gas source pressure maintaining valve in an embodiment of the present invention;

FIG. 13 is a schematic diagram of the overall structure of the integrated switching valve according to the embodiment of the present invention;

FIG. 14 is a schematic cross-sectional view A-A of FIG. 13;

FIG. 15 is a schematic illustration in partial cross-sectional view of an integrated switching valve in an embodiment of the present invention;

fig. 16 is a partial sectional view of the integrated switching valve in the embodiment of the present invention.

Reference numerals:

a housing 10;

a temperature control valve 20;

two ever-burning flame nozzle assemblies 30;

the double-gas-source pressure stabilizing valve 40, a pressure stabilizing valve body 41, an upper valve body 411, a first abutting part 4111, a lower valve body 412, an air inlet channel 4121, an air outlet channel 4122, a first vent hole 4123, a diaphragm assembly 42, a pressure regulating rod 43, a second abutting part 431, a first limit baffle 4311, a pin shaft 432, a first transmission piece 44, a strip-shaped through hole 441, a first pressure spring 45, a second pressure spring 46, a core shaft 47, an adjusting bolt 471, a conical clamping groove 472, a bearing plate 48 and a second limit baffle 481;

the comprehensive switching valve 50, the switching valve body 51, the linkage piece 511, the limiting seat 512, the limiting through hole 5121, the first gas transmission channel 52, the main fire gas inlet 521, the second gas transmission channel 53, the partition 531, the second vent hole 5311, the main fire nozzle 54, the first nozzle opening 541, the second nozzle opening 542, the gas pipe 543, the annular step 544, the fourth gas transmission channel 5441, the third gas transmission channel 55, the ever-burning fire gas inlet 551, the first gas outlet 552, the second gas outlet 553, the stopper 554, the vent channel 5541, the first push-pull rod 56, the second transmission piece 561, the through hole 5611, the first sealing rubber gasket 562, the pin 563, the mounting groove 564, the second push-pull rod 57, the second sealing rubber gasket 571, the third sealing rubber gasket 572, the annular groove 573, the third pressure spring 58 and the fourth pressure spring 59;

the ignition switch 60, the bracket 61, the clamping plate 611, the first limit notch 6111, the ignition button 62, the base 63, the projection 631, the guide slope 6311, the limit groove 6312, the positioning groove 632, the second limit step 633, the fastening nut 634, the annular convex edge 635, the adjusting core shaft 64, the first fixture block 641, the linkage block 642, the first installation through hole 6421, the first limit step 643, the second fixture block 644, the connecting plate 645, the second limit notch 6451, the annular groove 646, the rotating cap 65, the limit groove 651, the limit protrusion 652, the annular clamping groove 653, the anti-slip texture 654, the elastic reset piece 66, the push plate 67, the limit plate 671, the pull rope 68, the limit block 681, and the outer tube.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that if an orientation description is referred to, for example, the directions or positional relationships indicated by upper, lower, front, rear, left, right, etc., are based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if several, more than, less than, more than, above, below, or within words appear, several means are one or more, several means are two or more, more than, less than, more than, etc. are understood as not including the number, and more than, less than, within, etc. are understood as including the number.

In the description of the present invention, if the first, second, etc. terms appear, they are only used for distinguishing technical features, but are not to be interpreted as indicating or implying relative importance or implying number of indicated technical features or implying precedence of indicated technical features.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like 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 contents of the technical solutions.

Referring to fig. 1, the dual gas source gas thermostat according to the first aspect embodiment of the present invention includes a housing 10, a thermo-valve 20, two ever-burning flame nozzle assemblies 30, a dual gas source surge damping valve 40, an integrated switching valve 50, and an ignition switch 60.

The temperature control valve 20 is arranged in the shell 10, the two long open fire nozzle assemblies 30 are arranged in the shell 10, the double-air-source pressure stabilizing valve 40 is arranged in the shell 10 and communicated with the temperature control valve 20, the double-air-source pressure stabilizing valve 40 can adjust output pressure according to different air sources, the comprehensive switching valve 50 is arranged in the shell 10, the comprehensive switching valve 50 is communicated with the temperature control valve 20 and communicated with the two long open fire nozzle assemblies 30, the comprehensive switching valve 50 can switch air transmission modes according to different air sources, the ignition switch 60 is arranged in the shell 10 and can be ignited, and the ignition switch 60 is mechanically linked with the double-air-source pressure stabilizing valve 40 and the comprehensive switching valve 50 respectively, so that the ignition switch 60 can regulate and control the double-air-source pressure stabilizing valve 40 and the.

When the liquefied petroleum gas is used, the dual-gas-source pressure stabilizing valve 40 adjusts the output pressure of the fuel gas through the regulation and control of the ignition switch 60 so as to adapt to the liquefied petroleum gas, and meanwhile, the comprehensive switching valve 50 switches the gas transmission mode through the regulation and control of the ignition switch 60 so as to adapt to the liquefied petroleum gas; when the natural gas is used, the double-gas-source pressure stabilizing valve 40 adjusts the output pressure of the fuel gas through the regulation and control of the ignition switch 60 so as to adapt to the natural gas, and meanwhile, the comprehensive switching valve 50 switches a gas transmission mode through the regulation and control of the ignition switch 60 so as to adapt to the natural gas; the gas utilization range is expanded, the defect of the traditional fixed gas mode is greatly improved, the higher requirement of the market is met, and more choices and more convenience are brought to merchants and consumers.

Referring to fig. 2 and 3, in some of these embodiments, the ignition switch 60 includes a bracket 61, an ignition button 62, a base 63, an adjustment mandrel 64, a swivel cap 65, a resilient return 66, a push plate 67, and two pull cords 68.

The ignition button 62 is arranged on the bracket 61, the base 63 is arranged on the bracket 61, the adjusting mandrel 64 is rotatably arranged on the base 63 in a penetrating way, an adjusting structure is arranged between the adjusting mandrel 64 and the base 63, the adjusting mandrel 64 can slide relative to the base 63 through the adjusting structure when rotating relative to the base 63, the rotating cap 65 can be slidably sleeved on the base 63, the adjusting mandrel 64 is arranged in the rotating cap 65 in a penetrating way, a linkage structure is arranged between the rotating cap 65 and the adjusting mandrel 64, so that the rotating cap 65 can slide relative to the adjusting mandrel 64 when being pressed by external force, the rotating cap 65 can drive the adjusting mandrel 64 to rotate when being rotated by the external force, the elastic reset piece 66 is arranged between the rotating cap 65 and the base 63, the push plate 67 is arranged on the rotating cap 65, the rotating cap 65 can drive the push plate 67 to be pressed down on the ignition button 62 when being pressed by the external force, the other end of one of the pull ropes 68 is connected to the dual air supply pressure maintaining valve 40, and the other end of the other pull rope 68 is connected to the comprehensive switching valve 50.

When the rotary cap 65 is pressed by external force, the push plate 67 is driven to be pressed down on the ignition button 62 for ignition, after the ignition action is completed, the rotary cap 65 is reset through the elastic reset piece 66 and drives the push plate 67 to reset, when the rotary cap 65 is rotated by external force, the adjusting mandrel 64 is driven to rotate relative to the base 63, the adjusting mandrel 64 slides relative to the base 63 through the adjusting effect of the adjusting structure while rotating relative to the base 63, so that the pull rope 68 is pulled to regulate and control the double-gas-source pressure stabilizing valve 40 connected to the pull rope 68 and the comprehensive switching valve 50, the structure is simple, the ignition function can be realized, the regulation and control of the double-gas-source pressure stabilizing valve 40 and the comprehensive switching valve 50 can be realized, and the requirements of consumers can be. The ignition button 62 may be a piezoelectric ignition button or a pulse ignition button, which is not limited herein.

Referring to fig. 5 and 6, in some embodiments, the adjusting structure includes at least two protruding portions 631 spaced apart from each other at the top of the base 63 and a first locking block 641 radially disposed on the adjusting spindle 64, a positioning groove 632 is formed between two adjacent protruding portions 631, a guiding inclined surface 6311 is disposed on a side surface of the protruding portion 631, and a limiting groove 6312 is disposed at the top of the protruding portion 631, when the adjusting spindle 64 rotates, the first locking block 641 can be locked into the positioning groove 632 or the limiting groove 6312 under the guiding action of the guiding inclined surface 6311, and the rotating cap 65 can drive the adjusting spindle 64 to slide relative to the base 63 through the linkage structure when being pulled by an external force. When the adjusting mandrel 64 rotates relative to the base 63, the first clamping block 641 located in the positioning groove 632 is clamped into the limiting groove 6312 under the guiding action of the guiding inclined surface 6311, in the process, the first clamping block 641 is lifted along the guiding inclined surface 6311, so as to drive the adjusting mandrel 64 to slide relative to the base 63, so as to pull the pull rope 68, when the rotating cap 65 is pulled by external force, the rotating cap can drive the adjusting mandrel 64 to slide relative to the base 63 through the linkage structure, so that the first clamping block 641 can be clamped into the positioning groove 632 by being separated from the limiting groove 6312.

It should be noted that, in some embodiments, the adjusting structure may further be a nut fixedly disposed on the bracket, an external thread structure adapted to the nut is disposed on the upper portion of the adjusting mandrel, and when the adjusting mandrel rotates relative to the base, the adjusting mandrel can slide relative to the base through cooperation between the external thread structure on the upper portion of the adjusting mandrel and the nut fixedly disposed on the bracket.

Referring to fig. 2 and 3, in some embodiments, an outer tube 682 is sleeved on the pull rope 68, a snap plate 611 is arranged below the adjusting mandrel 64 on the bracket 61, a first limit notch 6111 is arranged on the snap plate 611 corresponding to the outer tube 682 outside the pull rope 68, and the size of the first limit notch 6111 is matched with the diameter of the pull rope 68. The outer tube 682 is blocked by the first limit notch 6111 to limit movement of the outer tube 682 when the pull cord 68 is pulled.

Referring to fig. 5 and 7, in some embodiments, the adjusting device further includes a linkage block 642, the linkage block 642 is provided with a first installation through hole 6421 and is sleeved on the adjusting spindle 64 through the first installation through hole 6421, a cross section of the first installation through hole 6421 is polygonal, a shape of the adjusting spindle 64 is matched with a shape of the first installation through hole 6421, so that the adjusting spindle 64 can drive the linkage block 642 to rotate when rotating, the first block 641 is formed on the linkage block 642, and a first limit step 643 is arranged on the adjusting spindle 64 corresponding to an upper end of the linkage block 642. The adjusting core shaft 64 and the first block 641 are provided with a split structure, so that the installation and the disassembly are convenient. Of course, it should be noted that, in some embodiments, the first fixture block may also be integrally formed on the adjusting spindle, which is not limited herein.

Referring to fig. 5 and 6, in some embodiments, the linkage structure includes a second fixture block 644 radially disposed on the upper portion of the adjusting spindle 64, a limiting groove 651 is disposed on the rotating cap 65 corresponding to the second fixture block 644, the rotating cap 65 can drive the adjusting spindle 64 to rotate through the cooperation between the second fixture block 644 and the limiting groove 651 when being rotated by an external force, the limiting groove 651 has a supporting function on the second fixture block 644, and the rotating cap 65 can drive the adjusting spindle 64 to slide relative to the base 63 when being pulled by the external force.

Wherein, it should be noted that, in some of the embodiments, the linkage structure can also be the gear structure that sets up on adjusting mandrel upper portion and set up in rotatory cap and with the tooth-shaped groove of the gear structure looks adaptation on adjusting mandrel upper portion, make rotatory cap drive the adjusting mandrel when receiving external force rotation and rotate, and be equipped with the bar through-hole on the rotatory cap, be equipped with the connecting axle of wearing to locate in the bar through-hole on the adjusting mandrel, and rotatory cap makes the bottom and the connecting axle of bar through-hole contact under the effect that elasticity reset, can adjust the dabber relatively and slide when rotatory cap receives external force and presses, when rotatory cap receives external force pulling, the bottom of bar through-hole has the bearing effect to the connecting axle, thereby pull the adjusting mandrel.

Referring to fig. 2 to 4, in some embodiments, a connecting plate 645 is disposed at a lower end of the adjusting mandrel 64, the adjusting mandrel 64 can rotate relative to the connecting plate 645, a second limiting notch 6451 is disposed on the connecting plate 645, a size of the second limiting notch 6451 is matched with a diameter of the pull rope 68, a limiting block 681 is disposed at one end of the pull rope 68 close to the adjusting mandrel 64, and the pull rope 68 is fixed through matching of the second limiting notch 6451 and the limiting block 681.

It should be noted that, in some embodiments, referring to fig. 4, 5 and 7, an annular groove 646 is provided at the lower end of the adjusting spindle 64, and the connecting plate 645 is sleeved on the adjusting spindle 64 and is limited by the annular groove 646, so that the adjusting spindle 64 can rotate relative to the connecting plate 645, of course, a through hole may be provided on the connecting plate, and a screw penetrating through the through hole and screwed to the lower end of the adjusting spindle is provided, which is not limited herein.

Referring to fig. 5, in some embodiments, the diameter of the lower portion of the base 63 is smaller than that of the upper portion of the base 63 to form a second limit step 633, the lower portion of the base 63 is provided with an external thread structure, the bracket 61 is provided with a threaded hole (not shown) adapted to the external thread structure, the base 63 and the bracket 61 are screwed, and a fastening nut 634 is provided to cooperate with the limit step 33 to fasten the base 63 to the bracket 61. The base 63 is screwed to the bracket 61 for easy mounting and dismounting for easy maintenance.

Referring to fig. 3 and 5, in some embodiments, the upper portion of the base 63 is radially provided with an annular flange 635, the bottom of the rotating cap 65 is provided with an inward limiting protrusion 652, and the annular flange 635 can block the limiting protrusion 652 when the rotating cap 65 slides relative to the base 63, so as to prevent the rotating cap 65 from falling off under the resetting action of the elastic resetting member 66.

Referring to fig. 3 to 5, in some embodiments, the push plate 67 is provided with a second mounting through hole (not shown) and sleeved on the rotary cap 65 through the second mounting through hole, the lower portion of the rotary cap 65 is provided with an annular clamping groove 653, an edge of the second mounting through hole is clamped in the annular clamping groove 653, so that the rotary cap 65 can drive the push plate 67 to press down on the ignition button 62 when being pressed by an external force, and one end of the push plate 67 close to the ignition button 62 is provided with a downward limiting plate 671, and when the rotary cap 65 is rotated by the external force, the limiting plate 671 can limit the rotation of the push plate 67, so as to ensure that the push plate 67 is always located above the ignition button 62.

Referring to fig. 2, 4 and 5, in some embodiments, anti-slip threads 654 are provided on the spin cap 65 to facilitate spinning the spin cap 65.

Referring to fig. 3, in some embodiments, the elastic restoring member 66 is a pressure spring, the pressure spring is sleeved on the adjusting spindle 64, and one end of the pressure spring abuts against the top of the base 63 and the other end abuts against the inside of the rotating cap 65. Of course, it should be noted that in some embodiments, the elastic restoring member may also be a C-shaped spring plate or other elastic restoring structures, which is not limited herein.

Referring to fig. 8 and 10, in some embodiments thereof, dual gas supply pressure maintaining valve 40 includes a pressure maintaining valve body 41, a diaphragm assembly 42, a pressure regulating rod 43, a first pressure spring 45, a second pressure spring 46, and a spindle 47.

The pressure stabilizing valve body 41 comprises an upper valve body 411 and a lower valve body 412, a diaphragm assembly 42 is clamped between the upper valve body 411 and the lower valve body 412 and divides the pressure stabilizing valve body 41 into an upper chamber and a lower chamber, the chamber enclosed by the diaphragm assembly 42 and the lower valve body 412 comprises an air inlet channel 4121 and an air outlet channel 4122, the air inlet channel 4121 is communicated with an air source, the air outlet channel 4122 is communicated with the temperature control valve 20, a pressure regulating rod 43 is slidably arranged in the upper valve body 411 in a penetrating manner, a first transmission piece 44 is arranged at one end of the pressure regulating rod 43 far away from the diaphragm assembly 42, the ignition switch 60 is mechanically linked with the first transmission piece 44, the first transmission piece 44 can drive the pressure regulating rod 43 to slide towards the direction far away from the diaphragm assembly 42 when being driven by the ignition switch 60, a first pressure spring 45 is sleeved on the pressure regulating rod 43, a first abutting portion 4111 is arranged on the upper valve body 411, a second abutting portion 431 is arranged on the pressure regulating, the other end abuts against the second abutting portion 431, the pressure regulating rod 43 can act on the diaphragm assembly 42 under the urging of the elastic force of the first pressure spring 45, the second pressure spring 46 is sleeved on the first pressure spring 45, one end of the second pressure spring 46 abuts against the first abutting portion 4111, the other end abuts against the diaphragm assembly 42, a first vent hole 4123 is arranged between the air inlet channel 4121 and the air outlet channel 4122, the spindle 47 slidably penetrates through the first vent hole 4123, one end of the spindle 47 is connected to the diaphragm assembly 42, and the other end is provided with a regulating bolt 471 which can be matched with the first vent hole 4123 to regulate the ventilation amount.

When the first transmission member 44 is not driven by the ignition switch 60, the pressure adjusting rod 43 is driven by the elastic force of the first pressure spring 45 to act on the diaphragm assembly 42, and simultaneously, the elastic force of the second pressure spring 46 also acts on the diaphragm assembly 42, in this case, in a state of using liquefied petroleum gas, when the first transmission member 44 is driven by the ignition switch 60, the pressure adjusting rod 43 is driven by the first transmission member 44 to be away from the diaphragm assembly 42, so that only the second pressure spring 46 acts on the diaphragm assembly 42, in this case, in a state of using natural gas, by changing the number of the pressure springs acting on the diaphragm assembly 42, the magnitude of the acting force acting on the diaphragm assembly 42 is changed, so as to adapt to the required air pressure during combustion of different air sources, and thus the output pressure can be adjusted according to different air sources.

Referring to fig. 10 and 12, in some of these embodiments, the first abutment 4111 is an adjustment knob that is threadedly connected to the upper valve body 411. The amount of compression of the first and second pressure springs 45, 46 can be adjusted by rotating the adjustment knob to adjust the force acting on the diaphragm assembly 42.

Referring to fig. 10 to 12, in some embodiments, the second abutting portion 431 is sleeved on the pressure adjusting rod 43 and is in threaded connection with the pressure adjusting rod 43. The second abutting portion 431 can be rotationally adjusted to adjust the amount of compression of the first pressure spring 45, thereby adjusting the acting force acting on the diaphragm assembly 42.

Referring to fig. 10 and 12, in some embodiments, one end of the pressure regulating rod 43 away from the diaphragm assembly 42 is slidably inserted into the first transmission member 44, and a first linkage assembly is disposed between the pressure regulating rod 43 and the first transmission member 44, so that the first transmission member 44 can drive the pressure regulating rod 43 to slide in a direction away from the diaphragm assembly 42 when being driven by the ignition switch 60. The transmission relationship between the pressure-adjusting lever 43 and the first transmission member 44 is realized by the first linkage assembly.

Referring to fig. 8, 10 and 12, in some embodiments, the first linkage assembly includes a bar-shaped through hole 441 disposed on the first transmission member 44 and a pin 432 penetrating through an end of the pressure-adjusting rod 43 away from the diaphragm assembly 42, and the pin 432 is slidably connected to the bar-shaped through hole 441. The sliding fit of the pin shaft 432 and the strip-shaped through hole 441 enables the pressure regulating rod 43 to have a stroke capable of fluctuating up and down, so that the fluctuation generated in the working process of the membrane assembly 42 is adapted, the transmission relation between the pressure regulating rod 43 and the first transmission piece 44 is realized through the fit of the pin shaft 432 and the strip-shaped through hole 441, and the structure is convenient to mount and dismount and convenient to produce, assemble and maintain after sale.

It should be noted that, in some embodiments, the first linkage assembly may further include a strip-shaped through hole disposed at one end of the pressure regulating rod away from the diaphragm assembly, and a pin shaft disposed through the transmission member, which is not limited herein.

Referring to fig. 11, in some embodiments, a first limit baffle 4311 is disposed at an edge of the second abutting portion 431, which is beneficial to prevent the first pressure spring 45 from shifting or deviating, and improves the stability of the operation of the dual-source pressure maintaining valve.

Referring to fig. 11, in some embodiments, a supporting plate 48 is disposed between the diaphragm assembly 42 and the second pressure spring 46, and one end of the second pressure spring 46, which is far away from the first abutting portion 4111, abuts against the supporting plate 48, so that the second pressure spring 46 is prevented from directly acting on the diaphragm assembly 42, and the pressure regulating rod 43 is prevented from directly acting on the diaphragm assembly 42, thereby increasing the stressed area of the diaphragm assembly 42, facilitating to reduce stress concentration, and increasing the service life and reliability.

Referring to fig. 11, in some embodiments, a second limit baffle 481 is disposed on an edge of the supporting plate 48, which is beneficial to preventing the second pressure spring 46 from shifting or deviating, and improves the stability of the operation of the dual-air-source pressure maintaining valve.

Referring to fig. 10 to 12, in some embodiments, the upper end of the mandrel 47 sequentially penetrates through the diaphragm assembly 42 and the supporting plate 48, the upper end of the mandrel 47 is provided with a fastening structure, which may be a riveting structure or a screw structure, and the like, and is not limited thereto, and the upper end of the mandrel 47 is provided with a tapered slot 472.

When the state of using the natural gas is switched to the state of using the liquefied petroleum gas, the pressure regulating rod 43 slides downwards under the driving of the elastic force of the first pressure spring 45, the lower end of the pressure regulating rod 43 can slide into the conical clamping groove 472 under the guiding action of the inner wall of the conical clamping groove 472, so that the lower end of the pressure regulating rod 43 can accurately act on the middle part of the diaphragm assembly 42, and the conical clamping groove 472 can prevent the lower end of the pressure regulating rod 43 from deviating in the working process.

Referring to fig. 13 to 16, in some embodiments, the integrated switching valve 50 includes a switching valve body 51, a first gas delivery passage 52, a second gas delivery passage 53, a main fire nozzle 54, a third gas delivery passage 55, and a switching device.

The first gas transmission channel 52 is arranged in the switching valve body 51, the first gas transmission channel 52 is provided with a main fire gas inlet 521, the main fire gas inlet 521 is communicated with the temperature control valve 20, the second gas transmission channel 53 is communicated with the first gas transmission channel 52, the main fire nozzle 54 is arranged on the switching valve body 51, the main fire nozzle 54 is provided with a first nozzle opening 541 and a second nozzle opening 542, the first nozzle opening 541 is communicated with the first gas transmission channel 52, the second nozzle opening 542 is communicated with the second gas transmission channel 53, the third gas transmission channel 55 is arranged in the switching valve body 51, the third gas transmission channel 55 is provided with an ever-burning fire gas inlet 551, the third gas transmission channel 55 is provided with a first gas outlet 552 and a second gas outlet 553, the ever-burning fire gas inlet is communicated with the temperature control valve 20, the first gas outlet 552 is communicated with one ever-burning fire nozzle assembly 30, the second gas outlet is communicated with the other ever-burning nozzle assembly 30, the switching device is disposed on the switching valve body 51 and has a first gas transmission mode and a second gas transmission mode, when the switching device is switched to the first gas transmission mode, only the first nozzle opening 541 and the first gas outlet 552 can output gas, and when the switching device is switched to the second gas transmission mode, both the first nozzle opening 541 and the second nozzle opening 542 can output gas and output gas from the first gas outlet 552 and is switched to the second gas outlet 553.

Since both the combustion value and the gas pressure of the liquefied petroleum gas are higher than those of the natural gas, when the liquefied petroleum gas is used, the switching device is switched to the first gas transmission mode, the main fire nozzle 54 only discharges gas through the first nozzle opening 541 to control the gas discharge amount and is connected to one of the ever-burning flame nozzle assemblies 30 through the first gas outlet 552, when the natural gas is used, the switching device is switched to the second gas transmission mode, the main fire nozzle 54 discharges gas through the first nozzle opening 541 and the second nozzle opening 542 to increase the gas discharge amount and is connected to the other ever-burning flame nozzle assembly 30 through the second gas outlet 553, and the gas transmission mode is switched through the switching device, so that different gas sources can be adapted.

Referring to fig. 14 and 15, in some of these embodiments, the switching means comprises a first push-pull rod 56, a second push-pull rod 57, a third compression spring 58 and a fourth compression spring 59.

The first push-pull rod 56 is slidably inserted into the second gas transmission channel 53, a second transmission member 561 is arranged at the upper part of the first push-pull rod 56, the ignition switch 60 is mechanically linked with the second transmission member 561, the second transmission member 561 can drive the first push-pull rod 56 to slide relative to the second gas transmission channel 53 when being driven by the ignition switch 60, a first blocking structure is arranged between the first push-pull rod 56 and the second gas transmission channel 53, the first blocking structure can block a gas path communicated with the second nozzle opening 542 when the first push-pull rod 56 slides relative to the second gas transmission channel 53, the first push-pull rod 56 is slidably inserted into the third gas transmission channel 55, a transmission structure is arranged between the first push-pull rod 56 and the second push-pull rod 57, the first push-pull rod 56 can drive the second push-pull rod 57 to slide relative to the third gas transmission channel 55 through the transmission structure when sliding relative to the third gas transmission channel 55, and a second blocking structure is arranged between the second push-pull rod 57 and the third gas transmission channel 55, when the second push-pull rod 57 slides relative to the third gas transmission channel 55, the second blocking structure can block a gas path communicated with the first gas outlet 552 or a gas path communicated with the second gas outlet 553, the third pressure spring 58 is sleeved on the first push-pull rod 56, the lower end of the first push-pull rod 56 is provided with a butting portion, one end of the third pressure spring 58 abuts against the butting portion, the other end abuts against the switching valve body 51, one end of the fourth pressure spring 59 abuts against the lower end of the second push-pull rod 57, and the other end abuts against the switching valve body 51.

When the integrated switching valve 50 is in the first gas transmission mode, the second transmission member 561 is not driven by the ignition switch 60, the first push-pull rod 56 enables the first blocking structure to block the gas path communicated with the second nozzle opening 542 under the action of the elastic force of the third pressure spring 58, and simultaneously, the second push-pull rod 57 enables the second blocking structure to unblock the gas path communicated with the first gas outlet 552 and block the gas path communicated with the second gas outlet 553 under the action of the elastic force of the fourth pressure spring 59; when the second transmission member 561 is driven by the ignition switch 60, the first push-pull rod 56 is driven to slide against the elastic force of the third pressure spring 58, so that the first blocking structure unblocks the gas path communicated with the second nozzle opening 542, and simultaneously, the second push-pull rod 57 is driven by the transmission structure to slide relative to the third gas transmission channel 55, so that the second blocking structure unblocks the gas path communicated with the second gas outlet 553, and blocks the gas path communicated with the first gas outlet 552, thereby switching to the second gas transmission mode.

It should be noted that, in some embodiments, the third pressure spring 58 and the fourth pressure spring 59 may also be replaced by a tension spring or other elastic members, which is not limited herein.

Referring to fig. 13 to 16, in some embodiments, the transmission structure includes a linkage piece 511 disposed on the top of the switching valve body 51 and a limiting seat 512 disposed on the top of the switching valve body 51, an installation groove 564 is disposed on an upper portion of the first push-pull rod 56, one end of the linkage piece 511 is disposed in the installation groove 564, the other end of the linkage piece 511 abuts against an upper end of the second push-pull rod 57, a limiting through hole 5121 is disposed on the limiting seat 512, and the linkage piece 511 is disposed in the limiting through hole 5121. When the first push-pull rod 56 is driven by the second transmission member 561 to slide upwards, the left end of the linkage member 511 can be driven to lift upwards, the middle portion of the linkage member 511 is limited by the limiting through hole 5121, so that the right end of the linkage member 511 is pressed downwards, and the second push-pull rod 57 is driven to slide downwards.

It should be noted that, in some embodiments, the linkage piece 511 may also be hinged to the limiting seat, so that the transmission process is more stable.

Referring to fig. 16, in some embodiments, the main fire nozzle 54 is inserted into the switching valve body 51, the main fire nozzle 54 has an air pipe 543 communicating with the first nozzle opening 541, the air pipe 543 penetrates through the second air transmission channel 53 and communicates with the first air transmission channel 52, an annular step 544 is arranged on the air pipe 543, a fourth air transmission channel 5441 communicating with the second nozzle opening 542 is arranged on the annular step 544, and an air inlet of the fourth air transmission channel 5441 is located in the second air transmission channel 53.

Referring to fig. 14 and 16, in some embodiments, the upper portion of the second gas transmission channel 53 communicates with the first gas transmission channel 52, the second nozzle opening 542 communicates with the lower portion of the second gas transmission channel 53, the first blocking structure includes a partition 531 disposed in the middle of the second gas transmission channel 53 and a first sealing rubber cushion 562 disposed at the lower end of the first push-pull rod 56, the partition 531 is provided with a second gas transmission hole 5311, the first push-pull rod 56 can drive the first sealing rubber cushion 562 to block the second gas transmission hole 5311 when sliding relative to the second gas transmission channel 53, and the first sealing rubber cushion 562 forms a third abutting portion, which is simple in structure and easy to implement.

Referring to fig. 14 and 15, in some embodiments, the long open flame air inlet 551 is disposed in the middle of the third air delivery channel 55, the first air outlet 552 is disposed at the upper portion of the third air delivery channel 55, the second air outlet 553 is disposed at the lower portion of the third air delivery channel 55, the second sealing structure includes a stopper 554 disposed in the middle of the third air delivery channel 55, a vent channel 5541 is disposed in the stopper 554, the long open flame air inlet 551 is in communication with the vent channel 5541, the upper end of the vent channel 5541 is disposed between the first air outlet 552 and the long open flame air inlet 551, the lower end of the vent channel 5541 is disposed between the long open flame air inlet 551 and the second air outlet 553, the second push-pull rod 57 is disposed with a second sealing rubber gasket 571 and a third sealing rubber gasket 572, the second sealing rubber gasket is disposed above the vent channel 5541, the third sealing rubber gasket 572 is disposed below the vent channel 5541, and the second push-pull rod 57 is capable of driving the second sealing rubber gasket to seal the upper end of the vent channel 5541 or the vent channel 55571 or the vent channel or the The user drives the third sealing rubber gasket 572 to plug the lower end of the ventilation channel 5541, which is simple in structure and easy to implement.

It should be noted that, in some embodiments, the first sealing rubber gasket 562, the second sealing rubber gasket 571, and the third sealing rubber gasket 572 may be replaced by sealing plugs that can be inserted into the second vent 5311 or the vent channel 5541, or may be replaced by other sealing structures, which is not limited herein.

Referring to fig. 13 to 16, in some embodiments, the upper end of the first push-pull rod 56 is inserted into a second transmission member 561, and a second linkage assembly is disposed between the second transmission member 561 and the first push-pull rod 56, so that the second transmission member 561 can drive the first push-pull rod 56 to slide relative to the second gas transmission channel 53 when driven by the ignition switch 60. The transmission relationship between the first push-pull rod 56 and the second transmission member 561 is achieved by the second linkage assembly.

Referring to fig. 13 to 16, in some embodiments, the second linkage assembly includes a through hole 5611 formed in the second transmission member 561 and a pin 563 disposed through an upper end of the first push-pull rod 56, wherein the pin 563 is connected to the through hole 5611. The pin 563 is engaged with the through hole 5611 to realize the transmission relationship between the first push-pull rod 56 and the second transmission member 561, and the above structure is easy to install and disassemble, and easy to produce, assemble and maintain after sale.

It should be noted that, in some embodiments, the second linkage assembly may further include a through hole disposed at the upper end of the first push-pull rod and a pin shaft disposed through the transmission member, which is not limited herein.

Referring to fig. 14 and 15, in some embodiments, the lower end of the second push-pull rod 57 is provided with an annular groove 573 corresponding to the fourth pressure spring 59, and the upper end of the fourth pressure spring 59 is snapped into the annular groove 573. The upper end of the fourth pressure spring 59 is restrained by the annular groove 573 to prevent the upper end of the fourth pressure spring 59 from being displaced during operation.

It should be noted that, in some embodiments, the pulling rope 68 may be connected by providing through holes on the first transmission member 44 and the second transmission member 561, or the connecting shaft may be penetrated through the first transmission member 44 and the second transmission member 561 to connect the pulling rope 68, and the two pulling ropes 68 may also be replaced by one pulling rope connected to the lower end of the adjusting spindle 64, which is not limited herein.

In the description of the present specification, if reference is made to the description of "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples", and "some examples", etc., reference is made to the terminology, it is intended that a particular feature, structure, material, or characteristic described in connection with the embodiment or example be included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A dual-gas-source gas thermostat, comprising:

a housing (10);

a temperature control valve (20), the temperature control valve (20) being disposed within the housing (10);

two open flame nozzle assemblies (30), the two open flame nozzle assemblies (30) being disposed within the housing (10);

the double-gas-source pressure stabilizing valve (40) is arranged in the shell (10) and communicated with the temperature control valve (20), and the double-gas-source pressure stabilizing valve (40) can adjust output pressure according to different gas sources;

the comprehensive switching valve (50), the comprehensive switching valve (50) is arranged in the shell (10), the comprehensive switching valve (50) is communicated with the temperature control valve (20) and is communicated with the two ever-burning open flame nozzle assemblies (30), and the comprehensive switching valve (50) can switch gas transmission modes according to different gas sources;

the ignition switch (60) is arranged in the shell (10) and can ignite, and the ignition switch (60) is mechanically linked with the double-gas-source pressure stabilizing valve (40) and the comprehensive switching valve (50) respectively, so that the ignition switch (60) can regulate and control the double-gas-source pressure stabilizing valve (40) and the comprehensive switching valve (50).

2. The dual-source gas thermostat of claim 1 wherein the ignition switch (60) includes:

a bracket (61);

an ignition button (62), the ignition button (62) being disposed on the bracket (61);

a base (63), the base (63) being disposed on the bracket (61);

the adjusting mandrel (64) is rotatably arranged on the base (63) in a penetrating mode, an adjusting structure is arranged between the adjusting mandrel (64) and the base (63), and the adjusting mandrel (64) can slide relative to the base (63) through the adjusting structure when rotating relative to the base (63);

the rotating cap (65) is slidably sleeved on the base (63), the adjusting mandrel (64) penetrates through the rotating cap (65), and a linkage structure is arranged between the rotating cap (65) and the adjusting mandrel (64), so that the rotating cap (65) can slide relative to the adjusting mandrel (64) when pressed by external force, and the rotating cap (65) can drive the adjusting mandrel (64) to rotate when rotated by the external force;

an elastic return member (66), said elastic return member (66) being disposed between said swivel cap (65) and said base (63);

the push plate (67) is arranged on the rotating cap (65), and the rotating cap (65) can drive the push plate (67) to be pressed down on the ignition button (62) when being pressed by external force;

one end of each of the two pulling ropes (68) is connected to the lower end of the adjusting mandrel (64), the other end of one of the pulling ropes (68) is connected to the double-gas-source pressure stabilizing valve (40), and the other end of the other pulling rope (68) is connected to the comprehensive switching valve (50).

3. The dual-gas-source gas thermostat as claimed in claim 2, characterized in that the adjusting structure comprises at least two protrusions (631) spaced apart from each other at the top of the base (63) and a first block (641) radially disposed on the adjusting spindle (64), a positioning slot (632) is formed between two adjacent protrusions (631), a guiding inclined surface (6311) is disposed on a side surface of each protrusion (631), and the top of the convex part (631) is provided with a limit groove (6312), when the adjusting mandrel (64) rotates, the first clamping block (641) can be clamped into the positioning groove (632) or the limiting groove (6312) under the guiding action of the guide inclined surface (6311), and when the rotating cap (65) is pulled by external force, the adjusting mandrel (64) can be driven to slide relative to the base (63) through the linkage structure.

4. The dual-gas-source gas thermostat is characterized in that an outer pipe (682) is sleeved on the pull rope (68), a clamping plate (611) is arranged below the adjusting mandrel (64) on the bracket (61), a first limiting notch (6111) is formed in the clamping plate (611) and corresponds to the outer pipe (682) outside the pull rope (68), and the size of the first limiting notch (6111) is matched with the diameter of the pull rope (68).

5. The dual gas source gas thermostat of claim 2, wherein the dual gas source pressure maintaining valve (40) includes:

a pressure maintaining valve body (41), the pressure maintaining valve body (41) comprising an upper valve body (411) and a lower valve body (412);

the diaphragm assembly (42) is clamped between the upper valve body (411) and the lower valve body (412) and divides the pressure stabilizing valve body (41) into an upper chamber and a lower chamber, the chamber surrounded by the diaphragm assembly (42) and the lower valve body (412) comprises an air inlet channel (4121) and an air outlet channel (4122), the air inlet channel (4121) is communicated with an air source, and the air outlet channel (4122) is communicated with the temperature control valve (20);

the pressure regulating rod (43) is slidably arranged in the upper valve body (411) in a penetrating manner, one end, far away from the membrane assembly (42), of the pressure regulating rod (43) is provided with a first transmission piece (44), the other end of one pull rope (68) is connected to the first transmission piece (44), and the first transmission piece (44) can drive the pressure regulating rod (43) to slide towards the direction far away from the membrane assembly (42) when being driven by the ignition switch (60);

the first pressure spring (45) is sleeved on the pressure adjusting rod (43), a first abutting part (4111) is arranged on the upper valve body (411), a second abutting part (431) is arranged on the pressure adjusting rod (43), one end of the first pressure spring (45) abuts against the first abutting part (4111), the other end of the first pressure spring abuts against the second abutting part (431), and the pressure adjusting rod (43) can act on the diaphragm assembly (42) under the driving of the elastic force of the first pressure spring (45);

the second pressure spring (46), the second pressure spring (46) is sleeved on the first pressure spring (45), one end of the second pressure spring (46) is abutted against the first abutting part (4111), and the other end is abutted against the diaphragm assembly (42);

the air inlet channel (4121) and the air outlet channel (4122) are provided with a first vent hole (4123), the mandrel (47) is slidably arranged in the first vent hole (4123) in a penetrating mode, one end of the mandrel (47) is connected to the diaphragm assembly (42), and the other end of the mandrel is provided with an adjusting bolt (471) which can be matched with the first vent hole (4123) to adjust air volume.

6. The dual source gas thermostat of claim 5, wherein the first abutment (4111) is an adjustment knob, the adjustment knob being threadedly connected to the upper valve body (411).

7. The dual-source gas thermostat of claim 5, wherein the second abutting portion (431) is sleeved on the pressure regulating rod (43) and is in threaded connection with the pressure regulating rod (43).

8. The dual source gas thermostat of claim 2, wherein the integrated switching valve (50) includes:

a switching valve body (51);

the first gas transmission channel (52), the first gas transmission channel (52) is arranged in the switching valve body (51), a main fire gas inlet (521) is formed in the first gas transmission channel (52), and the main fire gas inlet (521) is communicated with the temperature control valve (20);

a second gas transmission channel (53), wherein the second gas transmission channel (53) is communicated with the first gas transmission channel (52);

the main fire nozzle (54) is arranged on the switching valve body (51), a first nozzle opening (541) and a second nozzle opening (542) are formed in the main fire nozzle (54), the first nozzle opening (541) is communicated with the first gas transmission channel (52), and the second nozzle opening (542) is communicated with the second gas transmission channel (53);

a third gas transmission channel (55), wherein the third gas transmission channel (55) is arranged in the switching valve body (51), a long open fire gas inlet (551) is arranged on the third gas transmission channel (55), a first gas outlet (552) and a second gas outlet (553) are arranged on the third gas transmission channel (55), the long open fire gas inlet (551) is communicated with the temperature control valve (20), the first gas outlet (552) is communicated with one long open fire nozzle assembly (30), and the second gas outlet (553) is communicated with the other long open fire nozzle assembly (30);

the switching device is arranged on the switching valve body (51) and has a first gas transmission mode and a second gas transmission mode, when the switching device is switched to the first gas transmission mode, only the first nozzle opening (541) and the first gas outlet (552) can discharge gas, and when the switching device is switched to the second gas transmission mode, both the first nozzle opening (541) and the second nozzle opening (542) can discharge gas and the gas discharged from the first gas outlet (552) is switched to the second gas outlet (553).

9. The dual-source gas thermostat of claim 8 wherein the switching means comprises:

the first push-pull rod (56) is slidably inserted into the second gas transmission channel (53), a second transmission piece (561) is arranged on the upper portion of the first push-pull rod (56), the other end of the other pull rope (68) is connected to the second transmission piece (561), the second transmission piece (561) can drive the first push-pull rod (56) to slide relative to the second gas transmission channel (53) when being driven by the ignition switch (60), a first blocking structure is arranged between the first push-pull rod (56) and the second gas transmission channel (53), and when the first push-pull rod (56) slides relative to the second gas transmission channel (53), the first blocking structure can block a gas path communicated with the second nozzle opening (542);

the first push-pull rod (56) is slidably inserted into the third gas transmission channel (55), a transmission structure is arranged between the first push-pull rod (56) and the second push-pull rod (57), the second push-pull rod (57) can be driven by the transmission structure to slide relative to the third gas transmission channel (55) when the first push-pull rod (56) slides relative to the third gas transmission channel (55), a second blocking structure is arranged between the second push-pull rod (57) and the third gas transmission channel (55), and the second blocking structure can block a gas circuit communicated with the first gas outlet (552) or a gas circuit communicated with the second gas outlet (553) when the second push-pull rod (57) slides relative to the third gas transmission channel (55);

the third pressure spring (58) is sleeved on the first push-pull rod (56), a third abutting part is arranged at the lower end of the first push-pull rod (56), one end of the third pressure spring (58) abuts against the third abutting part, and the other end of the third pressure spring abuts against the switching valve body (51);

and one end of the fourth pressure spring (59) is abutted against the lower end of the second push-pull rod (57), and the other end of the fourth pressure spring (59) is abutted against the switching valve body (51).

10. The dual-gas-source gas thermostat as claimed in claim 9, wherein the transmission structure comprises a linkage member (511) disposed at the top of the switching valve body (51) and a limiting seat (512) disposed at the top of the switching valve body (51), the upper portion of the first push-pull rod (56) is provided with a mounting groove (564), one end of the linkage member (511) is disposed in the mounting groove (564), the other end of the linkage member abuts against the upper end of the second push-pull rod (57), the limiting seat (512) is provided with a limiting through hole (5121), and the linkage member (511) is inserted into the limiting through hole (5121).

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