A temperature control valve

Abstract

This utility model discloses a temperature control valve body, belonging to the field of gas oven technology. It includes a valve body, valve core, valve cover, thermostat, adjusting rod, and switch structure. The valve cover is screwed to one side of the valve body, and the thermostat is threaded onto the valve cover via a nut. The thermostat has a threaded interface located inside the valve body. The bottom of the adjusting rod is threaded to the threaded interface. A sealing gasket, an O-ring, a pressure plate, and a connecting spring are sequentially installed between the adjusting rod and the thermostat. The valve core is connected to the top of the adjusting rod, and the switch structure is located on the valve body. This utility model adopts a linear transmission structure of "rotating shaft-valve core-adjusting rod-sealing gasket," eliminating complex components such as traditional gears and long rotating shafts, reducing the number of parts, and lowering production and assembly difficulty. Linear transmission eliminates power loss, improving response speed and temperature control accuracy. The sealing gasket directly engages with the channel, resulting in better gas sealing and reducing the risk of leakage.

Description

Technical Field

[0001] This utility model belongs to the field of gas oven technology, and in particular relates to a temperature control valve body. Background Technology

[0002] In a gas oven, the thermostat valve is a core component for temperature monitoring, precise gas flow control, and safety protection. Its performance directly affects the oven's safety, cooking efficiency, and user experience. In the event of accidental flameout, the thermostat valve quickly cuts off the gas supply, preventing gas leaks that could lead to poisoning or explosion. When the gas flow is increased, the thermostat valve automatically adjusts the gas volume to reach an equilibrium point and prevent further heating. This is the most critical function of the thermostat valve.

[0003] However, existing temperature control valves use structures such as gears and long rotating shafts, resulting in numerous parts, high difficulty in manufacturing these parts, and complex assembly, which greatly increases production costs. Utility Model Content

[0004] This utility model provides a temperature control valve body to solve the problems in the prior art.

[0005] The present invention adopts the following technical solution: a temperature control valve body, comprising a valve body, a valve core, a valve cover, a thermostat, an adjusting rod, and a switch structure. The valve cover is connected to one side of the valve body by screws, and the thermostat is threadedly connected to the valve cover by a nut. The thermostat extends into the valve body and has a threaded interface located inside the valve body. The bottom of the adjusting rod is threadedly connected to the threaded interface. A sealing gasket, an O-ring, a pressure plate, and a connecting spring are sequentially installed between the adjusting rod and the thermostat. The valve core is connected to the top of the adjusting rod. The switch structure is disposed on the valve body and can drive the valve core to rotate.

[0006] Furthermore, the top of the adjusting rod is provided with a horizontally arranged connecting rod, the valve core is provided with a snap-fit ​​groove that engages with the connecting rod, and the top of the valve core is provided with a plug-in groove.

[0007] Furthermore, the bottom of the adjusting rod is provided with an internal thread groove that is threaded to the threaded interface.

[0008] Furthermore, a sealing gasket is connected between the valve cover and the valve body.

[0009] Furthermore, the switch structure includes a valve seat, a rotating shaft, a switch pressing block, a retaining ring, a push rod pressing block, and a limiting block. The valve seat is mounted on the valve body by screws, and three microswitches are mounted on the valve seat by several screws. The switch pressing block is connected to the three microswitches. The rotating shaft is rotatably connected to the valve seat and can move downward along the valve seat. The retaining ring is engaged with the rotating shaft. The switch pressing block is sleeved above the rotating shaft by the retaining ring. The push rod pressing block and the limiting block are sleeved below the rotating shaft and inserted into the valve core. A return spring is provided between the valve core and the limiting block.

[0010] Furthermore, the three microswitches are microswitch one, microswitch two, and microswitch three. The trigger end of microswitch one is located between the switch pressure block and the valve seat, while the trigger ends of microswitch two and microswitch three are in contact with the switch pressure block, respectively.

[0011] Furthermore, the bottom of the rotating shaft is inserted into the insertion slot.

[0012] Furthermore, the valve body is connected to a thermocouple interface.

[0013] Furthermore, the valve cover is provided with a main air outlet, which is the first open flame outlet.

[0014] Furthermore, a second open flame port is connected to the valve body.

[0015] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects:

[0016] Firstly, when the temperature changes, the thermostat expands or contracts due to heat, driving the adjusting rod up and down via a threaded drive, which in turn opens and closes the gas passage via the sealing gasket. When the rotating shaft drives the valve core to rotate, the adjusting rod rotates synchronously with the valve core. Due to its threaded engagement with the thermostat, it achieves synchronous up and down displacement, precisely controlling the gas flow. The linear transmission structure of "rotating shaft-valve core-adjusting rod-sealing gasket" eliminates the need for complex components such as traditional gears and long rotating shafts, reducing the number of parts and lowering production and assembly difficulty. Linear transmission eliminates power loss, improving response speed and temperature control accuracy. The direct engagement of the sealing gasket with the passage ensures superior gas sealing and reduces the risk of leakage.

[0017] Secondly, in this utility model, the movement from the rotating shaft to the sealing gasket is a linear transmission, which does not require conversion through other accessories and can achieve the control requirements very efficiently. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is the front view of the present invention;

[0021] Figure 3 This is a three-dimensional structural exploded view of the present invention;

[0022] Figure 4 This is a partial three-dimensional structural schematic diagram of the present invention;

[0023] Figure Labels

[0024] Valve body 1, valve core 2, snap-fit ​​groove 200, plug groove 201, valve cover 3, thermostat 4, nut 400, threaded interface 401, adjusting rod 5, connecting rod 500, internal thread groove 501, sealing gasket 6, O-ring 7, pressure plate 8, connecting spring 9, sealing gasket 10, valve seat 11, rotating shaft 12, switch pressure block 13, snap ring 14, push rod pressure block 15, limit block 16, return spring 17, micro switch one 18, micro switch two 19, micro switch three 20, thermocouple interface 21, first open flame port 22, second open flame port 23. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0027] Reference Figures 1 to 4 As shown, this utility model embodiment provides a temperature control valve body, including a valve body 1, a valve core 2, a valve cover 3, a thermostat 4, an adjusting rod 5, and a switch structure. The valve cover 3 is connected to one side of the valve body 1 by screws. The thermostat 4 is threadedly connected to the valve cover 3 by a nut 400. The thermostat 4 extends into the valve body 1. The thermostat 4 has a threaded interface 401 located inside the valve body 1. The bottom of the adjusting rod 5 is threadedly connected to the threaded interface 401. A sealing gasket 6, an O-ring 7, a pressure plate 8, and a connecting spring 9 are sequentially installed between the adjusting rod 5 and the thermostat 4. The valve core 2 is connected to the top of the adjusting rod 5. The switch structure is disposed on the valve body 1, and the switch structure can drive the valve core 2 to rotate.

[0028] When the temperature changes, the thermostat 4 expands or contracts due to heat, driving the adjusting rod 5 up and down via a threaded drive, which in turn causes the sealing gasket 6 to open and close the gas passage. When the rotating shaft 12 drives the valve core 2 to rotate, the adjusting rod 5 rotates synchronously with the valve core 2. Due to its threaded engagement with the thermostat 4, it achieves synchronous up and down displacement, precisely controlling the gas flow. The linear transmission structure of "rotating shaft 12-valve core 2-adjusting rod 5-sealing gasket 6" eliminates complex components such as traditional gears and long rotating shaft 12, reducing the number of parts and lowering production and assembly difficulty. Linear transmission eliminates power loss, improving response speed and temperature control accuracy. The direct engagement of the sealing gasket 6 with the passage ensures better gas sealing and reduces the risk of leakage.

[0029] Specifically, the top of the adjusting rod 5 is provided with a horizontally arranged connecting rod 500, the valve core 2 is provided with a snap-fit ​​groove 200 that snaps into the connecting rod 500, and the top of the valve core 2 is provided with a plug-in groove 201.

[0030] The horizontal connecting rod 500 at the top of the adjusting rod 5 snaps into the locking groove 200 of the valve core 2, achieving circumferential fixation between the two; the insertion groove 201 at the top of the valve core 2 allows the rotating shaft 12 to be inserted, ensuring that the valve core 2 rotates synchronously when the rotating shaft 12 rotates. This structure ensures that the adjusting rod 5 rotates with the valve core 2 to achieve threaded transmission, while also allowing the adjusting rod 5 to move independently up and down to respond to the extension and retraction of the thermostat 4.

[0031] Specifically, the bottom of the adjusting rod 5 is provided with an internal thread groove 501 that is threadedly connected to the threaded interface 401. The internal thread groove 501 at the bottom of the adjusting rod 5 is precisely matched with the threaded interface 401 of the thermostat 4. When the adjusting rod 5 rotates with the valve core 2, the threaded transmission converts the rotational motion into axial displacement, driving the sealing gasket 6 to move up and down, adjusting the opening of the gas passage; when the thermostat 4 extends or retracts, it also pushes the adjusting rod 5 to move axially through the thread, realizing temperature feedback control.

[0032] Specifically, a sealing gasket 10 is connected between the valve cover 3 and the valve body 1. The sealing gasket 10 prevents gas from leaking outward from between the valve cover 3 and the valve body 1.

[0033] Specifically, the switch structure includes a valve seat 11, a rotating shaft 12, a switch pressing block 13, a retaining ring 14, a push rod pressing block 15, and a limiting block 16. The valve seat 11 is mounted on the valve body 1 by screws. Three microswitches are mounted on the valve seat 11 by several screws. The switch pressing block 13 is connected to the three microswitches. The rotating shaft 12 is rotatably connected to the valve seat 11 and can move downward along the valve seat 11. The retaining ring 14 is engaged with the rotating shaft 12. The switch pressing block 13 is sleeved above the rotating shaft 12 by the retaining ring 14. The push rod pressing block 15 and the limiting block 16 are sleeved below the rotating shaft 12 and inserted into the valve core 2. A return spring 17 is provided between the valve core 2 and the limiting block 16.

[0034] The rotating shaft 12 can rotate and move axially within the valve seat 11. The top switch pressure block 13 is positioned by the snap ring 14, and the bottom is inserted into the valve core 2 insertion slot 201.

[0035] When the rotating shaft 12 is rotated or pressed down, the switch pressing block 13 triggers different microswitches to control ignition, flameout, and fire level, while simultaneously driving the valve core 2 to rotate, thereby controlling the gas flow through the adjusting rod 5; after operation, the reset spring 17 pushes the valve core 2 and the rotating shaft 12 to reset.

[0036] Specifically, the three microswitches are microswitch 18, microswitch 29 and microswitch 30. The trigger end of microswitch 18 is located between the switch pressure block 13 and the valve seat 11, and the trigger ends of microswitch 29 and microswitch 30 are in contact with the switch pressure block 13 respectively.

[0037] Microswitch 18 is located between the switch pressure block 13 and the valve seat 11. It is triggered by pressure, such as when the shaft 12 is pressed down to ignite. Microswitch 2 19 and microswitch 3 20 are in contact with the side of the switch pressure block 13 and are triggered as the shaft 12 rotates, such as to adjust the flame intensity. Different combinations of switch signals realize the switching of functions such as ignition, flameout, and flame intensity adjustment.

[0038] Specifically, the bottom of the rotating shaft 12 is inserted into the insertion slot 201. The bottom of the rotating shaft 12 is inserted into the insertion slot 201 at the top of the valve core 2. Through the clearance fit between the slot and the shaft, it can both transmit rotational torque to drive the valve core 2 to rotate and allow the rotating shaft 12 to move axially relative to the valve core 2 to meet the requirements of pressing to trigger the micro switch.

[0039] Specifically, the valve body 1 is connected to a thermocouple interface 21. The thermocouple interface is connected to an external thermocouple sensor to monitor the flame temperature in real time and transmit the signal to the control system. When the flame is accidentally extinguished, the thermocouple temperature drops sharply, and the system triggers a switch structure to close the gas passage.

[0040] Specifically, the valve cover 3 is provided with a main gas outlet, which is the first open flame port 22. The main gas outlet on the valve cover 3 is directly connected to the gas passage. When the sealing gasket 6 moves upward to open the passage, the gas is output to the main burner through this port to provide the main firepower; when the sealing gasket 6 moves downward, the opening of the passage decreases, and the firepower weakens accordingly.

[0041] Specifically, a second open flame port 23 is connected to the valve body 1. The second open flame port 23 on the valve body 1 is connected to the gas passage through an internal branch, forming a dual-output system with the first open flame port 22. When the sealing gasket 6 adjusts the opening of the main passage, the second open flame port 23 can independently maintain a small flame for heat preservation, or coordinate with the main flame to adjust the total firepower.

[0042] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A temperature control valve body, characterized in that, It includes a valve body (1), a valve core (2), a valve cover (3), a thermostat (4), an adjusting rod (5), and a switch structure. The valve cover (3) is connected to one side of the valve body (1) by screws. The thermostat (4) is threaded onto the valve cover (3) via a nut (400), and the thermostat (4) extends into the valve body (1). The temperature controller (4) has a threaded interface (401) located inside the valve body (1), and the bottom of the adjusting rod (5) is threadedly connected to the threaded interface (401). A sealing gasket (6), an O-ring (7), a pressure plate (8), and a connecting spring (9) are sequentially installed between the adjusting rod (5) and the temperature controller (4). The top of the adjusting rod (5) is connected to the valve core (2), and the switch structure is set on the valve body (1). The switch structure can drive the valve core (2) to rotate.

2. The temperature control valve body according to claim 1, characterized in that: The top of the adjusting rod (5) is provided with a horizontally arranged connecting rod (500), the valve core (2) is provided with a snap-fit ​​groove (200) that snaps into the connecting rod (500), and the top of the valve core (2) is provided with a plug-in groove (201).

3. A temperature control valve body according to claim 1, characterized in that: The bottom of the adjusting rod (5) is provided with an internal thread groove (501) that is threaded to the threaded interface (401).

4. A temperature control valve body according to claim 1, characterized in that: A sealing gasket (10) is connected between the valve cover (3) and the valve body (1).

5. A temperature control valve body according to claim 2, characterized in that: The switch structure includes a valve seat (11), a rotating shaft (12), a switch pressing block (13), a retaining ring (14), a push rod pressing block (15), and a limiting block (16). The valve seat (11) is mounted on the valve body (1) by screws. Three microswitches are mounted on the valve seat (11) by several screws. The switch switching block (13) is connected to the three microswitches. The rotating shaft (12) is rotatably connected to the valve seat (11), and the rotating shaft (12) can move downward along the valve seat (11). The retaining ring (14) is engaged with the rotating shaft (12), and the switch pressing block (13) is sleeved above the rotating shaft (12) via the retaining ring (14). The top rod pressure block (15) and the limiting block (16) are fitted under the rotating shaft (12) and inserted into the valve core (2). A return spring (17) is provided between the valve core (2) and the limiting block (16).

6. A temperature control valve body according to claim 5, characterized in that: The three microswitches are microswitch one (18), microswitch two (19) and microswitch three (20). The trigger end of microswitch one (18) is located between the switch pressure block (13) and the valve seat (11). The trigger ends of microswitch two (19) and microswitch three (20) are in contact with the switch pressure block (13) respectively.

7. A temperature control valve body according to claim 5, characterized in that: The bottom of the rotating shaft (12) is inserted into the insertion slot (201).

8. A temperature control valve body according to claim 1, characterized in that: The valve body (1) is connected to a thermocouple interface (21).

9. A temperature control valve body according to claim 1, characterized in that: The valve cover (3) is provided with a main air outlet, which is the first open flame port (22).

10. A temperature control valve body according to claim 1, characterized in that: The valve body (1) is connected to a second open flame port (23).

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