Gas valve for constant temperature control
By combining the valve core assembly, solenoid valve, and primer gas regulating mechanism, the problems of complex and unreliable constant temperature control structure of existing gas valves are solved, realizing simple, reliable constant temperature control and flexible adjustment of gas valves.
Patent Information
- Application Number
- CN202520577340.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-28
AI Technical Summary
Existing gas valves have complex thermostatic control structures, are difficult to manufacture, and lack reliability.
It adopts a combination structure of valve core assembly, solenoid valve and primer gas regulating mechanism. The valve core assembly controls the connection and disconnection of the gas channel, the solenoid valve controls the opening and closing of the temperature regulating gas channel, and the primer gas regulating mechanism regulates the flow rate, so as to achieve simple and reliable constant temperature control.
It achieves constant temperature control of gas valves that are simple in structure, easy to manufacture, and highly reliable, and can flexibly adjust the firepower and temperature.
Smart Images
Figure CN223825678U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to gas valves, and more particularly to a gas valve for constant temperature control. Background Technology
[0002] Some existing gas valves have control structures for achieving constant temperature control. These existing control structures often employ expansion mechanisms, using temperature sensors to control the expansion and contraction of the expansion structure. This narrows or widens the gas passage to control the gas output flow, thereby controlling the flame and ultimately the temperature. However, the aforementioned constant temperature control structure is relatively complex, difficult to manufacture, and lacks reliability. Utility Model Content
[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a gas valve for constant temperature control, which has a simple structure, is easy to manufacture, and has good reliability.
[0004] A gas valve for constant temperature control according to an embodiment of the present invention includes: a valve body, having a gas input channel, an internal gas output channel, a temperature-regulating gas channel, a primer gas channel, and an external temperature-regulating gas output channel; the gas input channel is used to input gas, the internal gas output channel is used to output the gas input through the gas input channel, and the external temperature-regulating gas output channel is used to output gas externally; one end of the temperature-regulating gas channel is connected to the external temperature-regulating gas output channel, and the other end is connected to the internal gas output channel; the primer gas channel is used to connect the internal gas output channel and the temperature-regulating gas channel; a valve core assembly, disposed in the valve body and used to control the connection and disconnection between the gas input channel and the internal gas output channel; a primer gas regulating mechanism, disposed in the valve body and used to control the flow rate of the primer gas channel; and a solenoid valve, disposed in the valve body and used to control the connection and disconnection between the internal gas output channel and the temperature-regulating gas channel.
[0005] A gas valve for thermostatic control according to an embodiment of this utility model has at least the following beneficial effects: In use, the gas valve is opened by the valve core assembly, connecting the gas input channel and the internal gas output channel. Gas can be output to the external thermostatic gas output channel through the temperature-regulating gas channel and the primer gas channel, and the external thermostatic gas output channel can be connected to the gas appliance. The on / off connection between the temperature-regulating gas channel and the internal gas output channel can be controlled by a solenoid valve, while the primer gas channel can maintain gas output to the temperature-regulating gas channel, thus changing the gas flow rate output to the external thermostatic gas output channel, thereby achieving flame adjustment and temperature control. The primer gas regulating mechanism can adjust the primer gas flow rate, thus facilitating the adjustment of a suitable primer temperature. The above-mentioned gas valve has a simple structure, is easy to manufacture, and has good reliability.
[0006] According to some embodiments of this utility model, the valve core assembly is provided with a first through channel and a temperature control communication channel; the valve core assembly is rotatably disposed on the valve body and has a closed position, a fully open position, and a temperature-adjusting position: in the closed position, the gas valve does not output gas; in the fully open position, the gas input channel is connected to the external temperature-adjusting gas output channel through the first through channel; in the temperature-adjusting position, the external temperature-adjusting gas output channel and the first through channel are disconnected, and the gas input channel is connected to the internal gas output channel through the temperature control communication channel.
[0007] According to some embodiments of the present invention, the valve body is further provided with a second external output channel, and the valve core assembly is provided with a second straight-through channel; in the fully open position, the gas input channel is connected to the second external output channel through the second straight-through channel.
[0008] According to some embodiments of the present invention, the gas valve further includes a gear position detection device, which is used to detect the position of the valve core assembly and output a corresponding electrical signal.
[0009] According to some embodiments of the present invention, the gear detection device includes a fixed plate, a rotating plate, and a touch switch. The rotating plate and the valve core assembly are coaxially fixed. The fixed plate is fixed relative to the valve body and coaxially arranged with the rotating plate. The touch switch is fixed to the fixed plate. Multiple temperature adjustment positions are provided. Multiple touch switches are provided and correspond to the fully open position of the valve core assembly and each of the temperature adjustment positions. The rotating plate is provided with a touch protrusion, which is used to touch the corresponding touch switch when the valve core assembly is switched to different positions.
[0010] According to some embodiments of the present invention, the valve core assembly is configured to rotate in both directions. When the valve core assembly rotates in the first direction, the valve core assembly enters the fully open position. When the valve core assembly rotates in the second direction, the valve core assembly sequentially enters each of the temperature adjustment positions. One of the first direction and the second direction is a clockwise direction and the other is a counterclockwise direction.
[0011] According to some embodiments of this utility model, the contact protrusion includes an inner protrusion and an outer protrusion. The inner protrusion is positioned relative to the outer protrusion on the fixed disk closer to its central axis. The inner protrusion is an annular ring with a notch. The outer protrusion is located on the outer periphery of the inner protrusion and is opposite to the notch of the inner protrusion. The contact switch includes a valve opening detection switch, a full-open detection switch, and multiple temperature level detection switches. The valve opening detection switch is corresponding to the inner protrusion. The full-open detection switch and each of the temperature level detection switches are arranged circumferentially on the fixed disk and corresponding to the outer protrusion. In the closed position, none of the contact switches are touched by the contact protrusion. In the fully open position, the inner protrusion triggers the valve opening detection switch, and the outer protrusion triggers the full-open detection switch. In each temperature adjustment position, the inner protrusion remains triggered by the valve opening detection switch, and the outer protrusion triggers the corresponding temperature level detection switch.
[0012] According to some embodiments of this utility model, the valve body is provided with a control valve chamber, the internal gas output channel is connected to the control valve chamber through a main connection port, the temperature regulating gas channel is connected to the cavity wall of the control valve chamber, and the solenoid valve is provided with a retractable sealing plug, the sealing plug being opposite to the main connection port and used to block and open the main connection port.
[0013] According to some embodiments of this utility model, the bottom flame gas regulating mechanism is a bottom flame swirl core. The bottom flame gas channel includes a first channel and a second channel that are perpendicular to each other. One end of the first channel is connected to the internal gas output channel, and one end of the second channel is connected to the temperature regulating gas channel. The other ends of the first channel and the second channel are connected to each other. The bottom flame swirl core is rotatably disposed on the valve body and one end is inserted into the connection between the first channel and the second channel. One end of the bottom flame swirl core is provided with a radial hole and an axial hole. The radial hole passes through the bottom flame swirl core radially, and the axial hole is arranged axially and connects the radial hole and the second channel. The radial hole can be adjusted between two positions: one directly opposite the first channel and the other covered by the channel wall of the second channel.
[0014] According to some embodiments of the present invention, the other end of the bottom fire core is provided with a tool mating part.
[0015] Additional aspects and advantages of this 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. Attached Figure Description
[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0017] Figure 1 This is a perspective view of an embodiment of the present utility model;
[0018] Figure 2 This is an exploded view of an embodiment of the present utility model;
[0019] Figure 3 This is a schematic diagram of the valve core assembly in the closed position according to an embodiment of the present invention;
[0020] Figure 4 This is a schematic diagram of the valve core assembly in the fully open position according to an embodiment of the present invention;
[0021] Figure 5 This is a schematic diagram of the valve core assembly in the first temperature adjustment position according to an embodiment of the present invention;
[0022] Figure 6 for Figure 1 A cross-sectional view of the structure shown along the AA direction;
[0023] Figure 7 for Figure 6 Enlarged diagram of point B.
[0024] Figure label:
[0025] Valve body 100, gas input channel 110, internal gas output channel 120, temperature regulating gas channel 130, primer gas channel 140, external temperature regulating gas output channel 150, second external output channel 160, control valve chamber 170, main connection port 180, first channel 141, second channel 142.
[0026] Valve core assembly 200, first through channel 210, temperature control through channel 220, second through channel 230, main valve core 240, main shaft 250, connecting shaft 260;
[0027] The primer gas regulating mechanism 300 has a radial hole 310 and an axial hole 320.
[0028] Solenoid valve 400, sealing plug 410;
[0029] Gear detection device 500, fixed plate 510, rotating plate 520, inner protrusion 521, outer protrusion 522, valve opening detection switch 531, fully open detection switch 532, temperature gear detection switch 533. Detailed Implementation
[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0032] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0034] Reference Figures 1 to 7A gas valve for thermostatic control includes: a valve body 100, a valve core assembly 200, a primer gas regulating mechanism 300, and a solenoid valve 400. The valve body 100 is provided with a gas input channel 110, an internal gas output channel 120, a thermostatic gas channel 130, a primer gas channel 140, and an external thermostatic gas output channel 150. The gas input channel 110 is used to input gas, the internal gas output channel 120 is used to output the gas input through the gas input channel 110, and the external thermostatic gas output channel 150 is used to output gas externally. One end of the thermostatic gas channel 130 is connected to the external thermostatic gas output channel 150, and the other end is connected to the internal gas output channel 120. The primer gas channel 140 connects the internal gas output channel 120 and the thermostatic gas channel 130. The valve core assembly 200 is disposed on the valve body 100 and is used to control the connection and disconnection between the gas input channel 110 and the internal gas output channel 120. The primer gas regulating mechanism 300 is disposed on the valve body 100 and is used to control the flow rate of the primer gas channel 140. The solenoid valve 400 is disposed on the valve body 100 and is used to control the connection and disconnection between the internal gas output channel 120 and the temperature regulating gas channel 130.
[0035] In use, the gas valve is opened via the valve core assembly 200, connecting the gas input channel 110 and the internal gas output channel 120. Gas can then be output to the externally adjustable temperature gas output channel 150 via the temperature-regulating gas channel 130 and the primer gas channel 140. The externally adjustable temperature gas output channel 150 can be connected to the appliance. The on / off connection between the temperature-regulating gas channel 130 and the internal gas output channel 120 can be controlled by the solenoid valve 400. The primer gas channel 140 can maintain gas output to the temperature-regulating gas channel 130, thereby changing the gas flow rate output to the externally adjustable temperature gas output channel 150, thus achieving flame adjustment and temperature control. The primer gas regulating mechanism 300 can adjust the primer gas flow rate, facilitating the adjustment of the appropriate primer temperature. The aforementioned gas valve has a simple structure, is easy to manufacture, and has good reliability.
[0036] In this embodiment, the valve core assembly 200 is provided with a first through channel 210 and a temperature control communication channel 220. The valve core assembly 200 is rotatably mounted on the valve body 100 and has a closed position, a fully open position, and a temperature-adjusting position. In the closed position, the gas valve does not output gas. In the fully open position, the gas input channel 110 is connected to the external temperature-adjusting gas output channel 150 through the first through channel 210. In the temperature-adjusting position, the external temperature-adjusting gas output channel 150 and the first through channel 210 are disconnected, and the gas input channel 110 is connected to the internal gas output channel 120 through the temperature control communication channel 220. When temperature adjustment is not required, the valve core assembly 200 can be adjusted to the fully open position to directly output the gas input through the gas input channel 110 to the external temperature-adjusting gas output channel 150 through the first through channel 210, thereby achieving full-open gas output without passing through the internal gas output channel 120. When temperature control is required, the valve core assembly 200 can be adjusted to the temperature-adjusting position for temperature control. With the above structure, the gas valve has more functions and can be adjusted and used in different situations.
[0037] In this embodiment, the valve body 100 is further provided with a second external output channel 160, and the valve core assembly 200 is provided with a second straight-through channel 230; in the fully open position, the gas input channel 110 is connected to the second external output channel 160 through the second straight-through channel 230. With the above structure, in the fully open position, a further gas supply can be provided for use by other gas appliances.
[0038] In this embodiment, the gas valve also includes a position detection device 500, which detects the position of the valve core assembly 200 and outputs a corresponding electrical signal. Using the above structure, the position detection device 500 can output a corresponding electrical signal, and an external controller can use this signal to control the opening and closing of the solenoid valve 400 and the frequency of opening and closing, thereby achieving temperature regulation.
[0039] In this embodiment, the gear position detection device 500 includes a fixed disk 510, a rotating disk 520, and contact switches. The rotating disk 520 and the valve core assembly 200 are coaxially fixed. The fixed disk 510 is fixed relative to the valve body 100 and coaxially arranged with the rotating disk 520. The contact switches are fixed to the fixed disk 510. Multiple temperature adjustment positions are provided, and these multiple contact switches correspond to the fully open position of the valve core assembly 200 and each temperature adjustment position. The rotating disk 520 is provided with contact protrusions, which are used to contact the corresponding contact switches when the valve core assembly 200 switches to different positions. When the valve core assembly 200 rotates, it can drive the rotating disk 520 to rotate synchronously. The rotating disk 520 contacts each contact switch through the contact protrusions, thereby realizing the detection of the corresponding position. The gear position detection device 500 described above has a simple structure and is easy to implement.
[0040] In this embodiment, the valve core assembly 200 is configured to rotate in both directions. When the valve core assembly 200 rotates in a first direction, it enters the fully open position. When the valve core assembly 200 rotates in a second direction, it sequentially enters each temperature adjustment position. One of the first and second directions is clockwise, and the other is counterclockwise. With this structure, the fully open and temperature adjustment positions are clearly defined, making operation convenient.
[0041] In this embodiment, the touch protrusion includes an inner protrusion 521 and an outer protrusion 522. The inner protrusion 521 is positioned relative to the outer protrusion 522 on the fixed disk 510, closer to the central axis of the fixed disk 510. The inner protrusion 521 is an annular ring with a notch. The outer protrusion 522 is located on the outer periphery of the inner protrusion 521 and is opposite to the notch of the inner protrusion 521. The touch switch includes a valve opening detection switch 531, a full-open detection switch 532, and multiple temperature level detection switches 533. The valve opening detection switch 531 and the inner protrusion 522 are positioned relative to the outer protrusion 522. The protruding strip 521 is correspondingly positioned, and the fully open detection switch 532 and the temperature setting detection switches 533 are arranged circumferentially along the fixed plate 510 and correspondingly positioned to the outer protrusion 522. In the closed position, the touch switches are not touched by the touch protrusions. In the fully open position, the inner protruding strip 521 triggers the valve opening detection switch 531, and the outer protrusion 522 triggers the fully open detection switch 532. In each temperature setting position, the inner protruding strip 521 continues to trigger the valve opening detection switch 531, and the outer protrusion 522 triggers the corresponding temperature setting detection switch 533. The valve opening detection switch 531 is triggered in both the fully open and temperature setting positions, thus providing an electrical signal indicating whether the gas valve is open. In the fully open position, the fully open detection switch 532 confirms whether the valve is fully open, and in each temperature setting position, the outer protrusion 522 can also detect the temperature setting by touching the respective temperature setting detection switch 533.
[0042] In this embodiment, the valve core assembly 200 includes a main valve core 240, a main shaft 250, and a connecting shaft 260. The main shaft 250, the main valve core 240, and the connecting shaft 260 are coaxially connected in sequence. The rotating disk 520 is fixed to the end of the connecting shaft 260. A first through channel 210, a temperature control communication channel 220, and a second through channel 230 are opened in the main valve core 240.
[0043] In this embodiment, the valve body 100 is provided with a control valve chamber 170, the internal gas output channel 120 is connected to the control valve chamber 170 through the main connection port 180, the temperature regulating gas channel 130 is connected to the cavity wall of the control valve chamber 170, and the solenoid valve 400 is provided with a retractable sealing plug 410, which is opposite to the main connection port 180 and is used to block and open the main connection port 180.
[0044] In this embodiment, the primer gas regulating mechanism 300 is a primer swirl core. The primer gas channel 140 includes a first channel 141 and a second channel 142 that are perpendicular to each other. One end of the first channel 141 is connected to the internal gas output channel 120, and one end of the second channel 142 is connected to the temperature regulating gas channel 130. The other ends of the first channel 141 and the second channel 142 are connected to each other. The primer swirl core is rotatably mounted on the valve body 100 and one end is inserted into the connection between the first channel 141 and the second channel 142. One end of the primer swirl core is provided with a radial hole 310 and an axial hole 320. The radial hole 310 passes through the primer swirl core radially, and the axial hole 320 is arranged axially and connects the radial hole 310 and the second channel 142. The radial hole 310 can be adjusted between two positions: one directly opposite the first channel 141 and the other covered by the channel wall of the second channel 142. The gas output from the internal gas output channel 120 can enter the first channel 141, pass through the radial hole 310 and the axial hole 320, and then enter the temperature-regulating gas channel 130. Finally, it is output to the outside through the external temperature-regulating gas output channel 150. When the primer core is rotated, the radial hole 310 can connect with the other end of the first channel 141 at different angular positions, thereby changing the flow area and realizing flow regulation. The above-mentioned primer gas regulating mechanism 300 has a simple structure and is easy to implement.
[0045] It is conceivable that in other embodiments, the base gas regulating mechanism 300 is not limited to the structure described above; for example, it can use existing ball valve, cock valve, or butterfly valve structures to achieve flow regulation.
[0046] In one embodiment, a tool fitting is provided at the other end of the primer swivel. In one embodiment, the tool fitting is a slotted slot; in other embodiments, the tool fitting may be a Phillips head slot, a hexagonal slot, a hexagonal head, etc., to facilitate adjustment using a screwdriver or similar tool.
[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0048] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A gas valve for thermostatic control, characterized in that, include: The valve body (100) is provided with a gas input channel (110), an internal gas output channel (120), a temperature-regulating gas channel (130), a primer gas channel (140), and an external temperature-regulating gas output channel (150). The gas input channel (110) is used to input gas, the internal gas output channel (120) is used to output the gas input through the gas input channel (110), and the external temperature-regulating gas output channel (150) is used to output gas. One end of the temperature-regulating gas channel (130) is connected to the external temperature-regulating gas output channel (150), and the other end is connected to the internal gas output channel (120). The primer gas channel (140) is used to connect the internal gas output channel (120) and the temperature-regulating gas channel (130). A valve core assembly (200) is disposed on the valve body (100) and is used to control the connection and disconnection between the gas input channel (110) and the internal gas output channel (120); A primer gas regulating mechanism (300) is disposed in the valve body (100) and is used to control the flow rate of the primer gas passage (140); A solenoid valve (400) is disposed in the valve body (100) and is used to control the connection and disconnection between the internal gas output channel (120) and the temperature-regulating gas channel (130).
2. The gas valve for constant temperature control according to claim 1, characterized in that: The valve core assembly (200) is provided with a first through channel (210) and a temperature control communication channel (220); the valve core assembly (200) is rotatably disposed on the valve body (100) and has a closed position, a fully open position and a temperature-adjusting position: in the closed position, the gas valve does not output gas; in the fully open position, the gas input channel (110) is connected to the external temperature-adjusting gas output channel (150) through the first through channel (210); in the temperature-adjusting position, the external temperature-adjusting gas output channel (150) and the first through channel (210) are disconnected, and the gas input channel (110) is connected to the internal gas output channel (120) through the temperature control communication channel (220).
3. The gas valve for constant temperature control according to claim 2, characterized in that: The valve body (100) is also provided with a second external output channel (160), and the valve core assembly (200) is provided with a second straight channel (230); in the fully open position, the gas input channel (110) is connected to the second external output channel (160) through the second straight channel (230).
4. The gas valve for constant temperature control according to claim 2, characterized in that: The gas valve also includes a gear position detection device (500), which is used to detect the position of the valve core assembly (200) and output a corresponding electrical signal.
5. The gas valve for constant temperature control according to claim 4, characterized in that: The gear position detection device (500) includes a fixed plate (510), a rotating plate (520), and a touch switch. The rotating plate (520) and the valve core assembly (200) are coaxially fixed. The fixed plate (510) is fixed relative to the valve body (100) and coaxially arranged with the rotating plate (520). The touch switch is fixed to the fixed plate (510). Multiple temperature adjustment positions are provided. Multiple touch switches are provided and correspond to the fully open position of the valve core assembly (200) and each of the temperature adjustment positions. The rotating plate (520) is provided with a touch protrusion. The touch protrusion is used to touch the corresponding touch switch when the valve core assembly (200) is switched to different positions.
6. The gas valve for constant temperature control according to claim 5, characterized in that: The valve core assembly (200) is configured to rotate in both directions. When the valve core assembly (200) rotates in the first direction, the valve core assembly (200) enters the fully open position. When the valve core assembly (200) rotates in the second direction, the valve core assembly (200) sequentially enters each of the temperature adjustment positions. One of the first direction and the second direction is a clockwise direction and the other is a counterclockwise direction.
7. The gas valve for constant temperature control according to claim 6, characterized in that: The contact protrusion includes an inner protrusion (521) and an outer protrusion (522). The inner protrusion (521) is positioned relative to the outer protrusion (522) on the fixed plate (510) closer to its central axis. The inner protrusion (521) is an annular ring with a notch. The outer protrusion (522) is located on the outer periphery of the inner protrusion (521) and is opposite to the notch of the inner protrusion (521). The contact switch includes a valve opening detection switch (531), a full-open detection switch (532), and multiple temperature level detection switches (533). The valve opening detection switch (531) and the inner protrusion (521) are... Correspondingly, the fully open detection switch (532) and each of the temperature level detection switches (533) are arranged circumferentially along the fixed plate (510) and are correspondingly set with the outer protrusion (522); in the closed position, none of the touch switches are touched by the touch protrusion; in the fully open position, the inner protrusion (521) triggers the valve opening detection switch (531), and the outer protrusion (522) triggers the fully open detection switch (532); in each of the temperature adjustment positions, the inner protrusion (521) continues to trigger the valve opening detection switch (531), and the outer protrusion (522) triggers the corresponding temperature level detection switch (533).
8. The gas valve for constant temperature control according to claim 1, characterized in that: The valve body (100) is provided with a control valve chamber (170). The internal gas output channel (120) is connected to the control valve chamber (170) through the main connection port (180). The temperature-regulating gas channel (130) is connected to the cavity wall of the control valve chamber (170). The solenoid valve (400) is provided with a retractable sealing plug (410). The sealing plug (410) is opposite to the main connection port (180) and is used to block and open the main connection port (180).
9. The gas valve for constant temperature control according to claim 1, characterized in that: The primer gas regulating mechanism (300) is a primer swirl core. The primer gas passage (140) includes a first passage (141) and a second passage (142) that are perpendicular to each other. One end of the first passage (141) is connected to the internal gas output passage (120), and one end of the second passage (142) is connected to the temperature regulating gas passage (130). The other ends of the first passage (141) and the second passage (142) are connected to each other. The primer swirl core is rotatably mounted on the valve body (100) and One end is inserted into the communication between the first channel (141) and the second channel (142). One end of the primer core is provided with a radial hole (310) and an axial hole (320). The radial hole (310) passes through the primer core radially, and the axial hole (320) is arranged axially and connects the radial hole (310) and the second channel (142). The radial hole (310) can be adjusted between two positions: one facing the first channel (141) and the other being covered by the channel wall of the second channel (142).
10. The gas valve for constant temperature control according to claim 9, characterized in that: The other end of the bottom fire core is provided with a tool mating part.