Valve body for kitchen range and kitchen range

Abstract

The embodiment of the utility model provides a stove valve body and a stove, the stove valve body comprises a valve seat, a valve rod penetrating through and higher than the valve seat and a microswitch assembly installed on the valve seat, and the part, higher than the outside of the valve seat, of the valve rod is sleeved with a boss; the boss is constructed to move along with the valve rod so as to trigger a triggering part of the microswitch assembly. And the boss is in interference fit with the valve rod. Therefore, direct casting of a switch conduction component on the valve rod is avoided, the production difficulty is reduced, the universality of the valve rod is improved, the stability of connection between the valve rod and the boss is improved through interference fit, and the reliability of ignition is guaranteed.

Description

[Technical Field]

[0001] This application relates to the field of gas stoves, and more particularly to a valve body and a stove for use in a gas stove. [Background Technology]

[0002] Some existing gas stoves have a linkage function; for example, after the gas stove is ignited, the range hood will automatically turn on without further operation. This places new requirements on the gas valve, which needs to be equipped with two microswitches: one for ignition and the other for auxiliary operation. A typical gas valve used in stoves includes a valve seat, valve core, valve stem, ignition microswitch, detection microswitch, and a valve cover fixed to the valve seat. During operation, the valve stem is pressed down and rotated. The valve stem should be designed to trigger both the ignition and detection microswitches to complete ignition and auxiliary control (turning on the range hood).

[0003] In existing technologies, the components that trigger the microswitch on the valve stem are usually integrally molded into the valve stem body, which makes the casting of the valve stem more complex and increases production costs.

[0004] Unless there is sufficient evidence to support it, the prior art described herein does not imply an admission that such prior art was known to a person skilled in the art prior to the filing date of this application. [Summary of the Invention]

[0005] One objective of this application is to provide an improved valve body for a stove, addressing at least one of the above-mentioned technical problems and / or other possible technical problems not mentioned in this application.

[0006] According to a first aspect of this application, an embodiment of this application provides a valve body for a stove, including a valve seat, a valve stem that passes through and is higher than the valve seat, and a micro switch assembly mounted on the valve seat. A boss is sleeved on the portion of the valve stem that is higher than the valve seat. The boss is configured to follow the movement of the valve stem to trigger the triggering part of the micro switch assembly. The boss and the valve stem are interference-fitted.

[0007] Therefore, on the one hand, it avoids casting the switching and conducting components directly on the valve stem, reducing production difficulty and improving the versatility of the valve stem; on the other hand, the interference fit helps to improve the stability of the connection between the valve stem and the boss, ensuring the reliability of ignition.

[0008] According to an optional embodiment of this application, the boss is provided with an insertion channel along the axial direction for the valve stem to be inserted; the inner wall of the insertion channel is provided with a protrusion; the protrusion is pressed between the valve stem and the insertion channel.

[0009] According to an optional embodiment of this application, the boss includes a first protrusion, a second protrusion, and a third protrusion arranged sequentially from top to bottom along the axial direction; the first protrusion, the second protrusion, and the third protrusion are constructed as a hollow structure to form the insertion channel.

[0010] According to an optional embodiment of this application, the protrusion is provided on the inner wall of the first protrusion; the first protrusion does not form a complete circumference in the circumferential direction.

[0011] According to an optional embodiment of this application, the first protrusion includes a first annular wall and a second annular wall arranged circumferentially at intervals; wherein the arc length of the second annular wall is smaller than the arc length of the first annular wall; the protrusion is located on the inner wall of the second annular wall.

[0012] According to an optional embodiment of this application, the micro switch assembly includes a first micro switch and a second micro switch; the first triggering component of the first micro switch and the second triggering component of the second micro switch can be triggered by the boss.

[0013] According to an optional embodiment of this application, when the valve stem is in its original position, the first triggering component is located below the second protrusion, and the first micro switch is not turned on; after the valve stem is pressed down from its original position, the first triggering component is triggered by the second protrusion, thereby turning on the first micro switch.

[0014] According to an optional embodiment of this application, the third protrusion has a clearance space in the circumferential direction corresponding to the position of the second triggering component, so that the second triggering component will not be triggered after the valve stem is pressed down from the original position; after the valve stem is pressed down from the original position and rotated by a certain angle, the second triggering component is triggered by the third protrusion to turn on the second micro switch.

[0015] According to an optional embodiment of this application, the bottom of the second protrusion is provided with a chamfered surface along the circumferential direction to cooperate with the first triggering component.

[0016] According to an optional embodiment of this application, the second triggering component is configured as a spring, the fixed end of the spring being connected to the second micro switch, and the free end of the spring being squeezed by a third protrusion.

[0017] According to a second aspect of this application, embodiments of this application provide a cooktop including a cooktop valve body as described in any of the above embodiments.

[0018] It should be noted that, unless otherwise specified, the directional expressions appearing in this application are based on the usual usage state of the stove.

[0019] It should be noted that the terms "first" and "second" appearing in this specification are for descriptive purposes only and are not used to indicate relative importance; moreover, they do not define the number of features they define; furthermore, they do not define the logical or sequential relationship between the features they define.

[0020] The above description of the invention is not intended to depict all possible implementations of the invention. Throughout the application, numerous examples are provided to provide guidance, and these examples can be used in a variety of feasible combinations. [Attached Image Description]

[0021] The following figures are for illustrative purposes only and do not limit the scope of this application, wherein:

[0022] Figure 1 This is a front view of an embodiment of a valve body for a stove according to this application;

[0023] Figure 2 This is an assembly drawing of the valve stem and boss of an embodiment of a valve body for a stove according to this application;

[0024] Figure 3 This is a perspective view of the boss of an embodiment of a valve body for a stove according to this application;

[0025] Figure 4 This is a cross-sectional view of the boss of an embodiment of a valve body for a stove according to this application.

[0026] Figure label:

[0027] 1-Valve seat, 2-Valve stem, 3-Micro switch assembly, 31-First micro switch, 310-First triggering component, 32-Second micro switch, 320-Second triggering component, 4-Boss, 40-Plug-in channel, 41-First protrusion, 411-First annular wall, 412-Second annular wall, 42-Second protrusion, 43-Third protrusion.

Detailed Implementation Methods

[0028] To make the purpose, solution, and beneficial effects of this application clearer, the application will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0029] See Figure 1 and Figure 2A valve body for a cooktop includes a valve seat 1 and a valve core (not shown) disposed within the valve seat 1. A valve stem 2 is inserted into the valve seat 1, with its lower end engaging with the valve core and its upper end extending above the valve seat 1 and connected to a knob (not shown) on the cooktop. A microswitch assembly 3 is mounted on the valve seat 1 and is used to control ignition and other functions. Generally, the microswitch assembly 3 is driven and activated by the valve stem 2. Especially when there is more than one microswitch, it is often necessary to have structures of different shapes on the valve stem 2 to activate each microswitch, which greatly increases the difficulty of molding the valve stem 2 during production.

[0030] Therefore, this application provides a boss 4 on the portion of the valve stem 2 that is higher than the valve seat 1, specifically on the portion of the valve stem 2 located between the valve seat 1 and the knob. The boss 4 is configured to follow the movement of the valve stem 2 (including but not limited to pressing down and rotating) to trigger the triggering part of the micro switch assembly 3. Thus, the valve stem 2 and the boss 4 can be machined and cast as separate parts, which not only reduces the difficulty of molding but also improves the versatility of both.

[0031] Furthermore, the boss 4 and the valve stem 2 are interference-fitted, which enhances the stability of their connection and ensures that the boss 4 can move with the valve stem 2.

[0032] According to an exemplary embodiment of this application, such as Figure 3 and Figure 4 As shown, the boss 4 has an axially arranged insertion channel 40 for the valve stem 2 to be inserted. The inner wall of the insertion channel 40 has a protrusion 401, which is pressed between the valve stem 2 and the insertion channel 40, enhancing the stability of the insertion fit. Furthermore, the shape of the protrusion 401 should be designed to facilitate insertion; for example, the thickness of the protrusion 401 gradually decreases from top to bottom until it is flush with the inner wall of the insertion channel 40.

[0033] According to an exemplary embodiment of this application, the boss 4 includes a first protrusion 41, a second protrusion 42, and a third protrusion 43 arranged sequentially from top to bottom along the axial direction. All three protrusions are constructed as hollow structures to form a plug-in channel 40. The first protrusion 41 is the main part for achieving an interference fit between the valve stem 2 and the plug-in channel 40, while the second protrusion 42 and the third protrusion 43 are used to activate different microswitches.

[0034] According to an exemplary embodiment of this application, a protrusion 401 is provided on the inner wall of the first protrusion 41, and the first protrusion 41 does not form a complete circumference in the circumferential direction. Therefore, during the insertion and installation of the boss 4, when the protrusion 401 is squeezed by the valve stem 2, the first protrusion 41 also has space to extend in the circumferential direction, which helps the boss 4 to be smoothly fitted onto the valve stem 2.

[0035] Furthermore, the first protrusion 41 includes a first annular wall 411 and a second annular wall 412 arranged circumferentially at intervals, wherein the arc length of the second annular wall 412 is less than the arc length of the first annular wall 411, and the aforementioned protrusion 401 is provided on the inner wall of the second annular wall 412. Because the second annular wall 412 is shorter than the first annular wall 411, it is easier for it to expand and contract circumferentially between the two, making it easier to insert and install the protrusion 4.

[0036] According to an exemplary embodiment of this application, such as Figure 1 As shown, the microswitch assembly 3 includes a first microswitch 31 and a second microswitch 32. Optionally, the first microswitch 31 is connected to an igniter (not shown) and includes a first triggering component 310 that can be triggered by the boss 4. When the first triggering component 310 is turned on, the igniter starts ignition. The second microswitch 32 is connected to the range hood and includes a second triggering component 320 that can be triggered by the boss 4. When the second triggering component 320 is turned on, it can control the opening of the range hood. The second microswitch 32 prevents the range hood from being turned on due to accidental touch of the first microswitch 31 by the user, improving the intelligence of the range hood and cooktop linkage.

[0037] According to an exemplary embodiment of this application, such as Figure 1 As shown, when the valve stem 2 is in its original position, the first triggering component 310 is located below the second protrusion 42, the first micro switch 31 is not turned on, and the igniter does not ignite; when the valve stem 2 is pressed down from its original position, the first triggering component 310 begins to be displaced by the pressure of the second protrusion 42 and is triggered to turn on the first micro switch 31.

[0038] Specifically, the bottom of the second protrusion 42 is provided with a chamfered surface along the circumferential direction to cooperate with the first triggering component 310. The chamfered surface presses down against the first triggering component 310 and makes it approach the body of the first micro switch 31 along the radial direction of the valve stem 2, thereby realizing conduction.

[0039] According to an exemplary embodiment of this application, such as Figure 1 As shown, the third protrusion 43 has a clearance space 430 in the circumferential direction corresponding to the position of the second triggering component 320. This clearance space 430 is formed by a portion missing from the annular wall of the third protrusion 43, so that the second triggering component 320 will not be triggered after the valve stem 2 is pressed down from its original position. Furthermore, after the valve stem 2 is pressed down from its original position and rotated by a certain angle, the second triggering component 320 is triggered by the third protrusion 43, thereby turning on the second micro switch 32. In this embodiment, even if the stove knob is pressed down due to accidental touch by the user, the range hood will not be started.

[0040] Specifically, the second triggering component 320 is constructed as a spring, with its fixed end connected to the body of the second micro switch 32 and its free end extending toward the third protrusion 43. When the valve stem 2 is not rotated, the free end is located in the clearance space 430; when the valve stem 2 rotates at a certain angle, the free end is pressed close to the body of the second micro switch 32 by the annular wall of the third protrusion 43, thereby achieving conduction.

[0041] This application also proposes an embodiment of a cooktop, which includes the aforementioned cooktop valve body.

[0042] The components of different embodiments can be combined with each other in any feasible manner to achieve the purpose of this application.

[0043] It should be further noted that this application should not be construed as limited to the embodiments described above, but rather as covering all possible implementations determined by the claims of this application in conjunction with the content disclosed in the specification. Therefore, any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall fall within the protection scope of the technical solution of this application.

Claims

1. A valve body for a cooktop, comprising a valve seat, a valve stem extending through and above the valve seat, and a microswitch assembly mounted on the valve seat, characterized in that: A boss is fitted on the portion of the valve stem that is above the valve seat. The boss is configured to follow the movement of the valve stem to trigger the trigger part of the micro switch assembly. The boss and the valve stem are interference fit.

2. The valve body for a stove according to claim 1, characterized in that: The boss is provided with an axial insertion channel for inserting the valve stem; The inner wall of the insertion channel is provided with a protrusion; The protrusion is pressed between the valve stem and the insertion channel.

3. The valve body for a stove according to claim 2, characterized in that: The boss includes a first protrusion, a second protrusion, and a third protrusion arranged sequentially from top to bottom along the axial direction; The first protrusion, the second protrusion, and the third protrusion are constructed as hollow structures to form the insertion channel.

4. The valve body for a stove according to claim 3, characterized in that: The protrusion is provided on the inner wall of the first protrusion; The first protrusion does not form a complete circle in the circumferential direction.

5. The valve body for a stove according to claim 4, characterized in that: The first protrusion includes a first annular wall and a second annular wall arranged circumferentially at intervals; Wherein, the arc length of the second ring wall is less than the arc length of the first ring wall; The protrusion is located on the inner wall of the second annular wall.

6. The valve body for a stove according to claim 3, characterized in that: The micro switch assembly includes a first micro switch and a second micro switch; The first triggering component of the first micro switch and the second triggering component of the second micro switch can be triggered by the boss.

7. The valve body for a stove according to claim 6, characterized in that: When the valve stem is in its original position, the first triggering component is located below the second protrusion, and the first micro switch is not turned on. After the valve stem is pressed down from its original position, the first triggering component is triggered by the second protrusion, thereby turning on the first micro switch.

8. The valve body for a stove according to claim 7, characterized in that: The third protrusion has a clearance space in the circumferential direction corresponding to the position of the second triggering component, so that the second triggering component will not be triggered after the valve stem is pressed down from the original position; After the valve stem is pressed down from its original position and rotated by a certain angle, the second triggering component is triggered by the third protrusion to turn on the second micro switch.

9. The valve body for a stove according to claim 8, characterized in that, Includes at least one of the following features: The bottom of the second protrusion has a chamfered surface along the circumferential direction that mates with the first triggering component; The second triggering component is configured as a spring, the fixed end of which is connected to the second micro switch, and the free end of which can be pressed by the third protrusion.

10. A stove, characterized in that: Includes the valve body for a stove as described in any one of claims 1 to 9.

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