Flow regulating valve and gas equipment

Abstract

The invention discloses a flow regulating valve and gas equipment, and relates to the technical field of valves, the flow regulating valve comprises a valve body, the valve body is provided with a valve cavity, an inlet and an outlet, and the inlet and the outlet are communicated with the valve cavity; the valve element is arranged in the valve cavity and controls the flow of fluid output to the outlet through rotation. The valve rod is in transmission connection with the valve element so as to drive the valve element to rotate; the limiting assembly comprises a follower and a limiting piece, the follower can rotate and is in transmission connection with the valve rod, the limiting piece and the follower are distributed in the first direction parallel to a rotating shaft of the follower, the follower is provided with a groove part, and the limiting piece is configured to be capable of sinking into the groove part and crossing the groove part. According to the flow regulating valve, the follower and the limiting part can be distributed in the axis direction of the valve rod, the limiting assembly can be arranged to be assembled in the axis direction of the valve rod, the assembling mode is more convenient, and the radial size of the flow regulating valve can be reduced.

Description

Technical Field

[0001] This invention relates to the field of valve technology, and in particular to a flow regulating valve and a gas equipment. Background Technology

[0002] The flame intensity of a gas stove is controlled by adjusting the gas flow through a gas valve. The valve's flow control performance is determined by the gas passages formed by its various components. Different positions during adjustment result in different gas passage states, leading to varying gas flow rates. These different flow rates produce different flame intensity. To ensure faster and more accurate flame intensity adjustment, the gas valve incorporates a limit mechanism for different settings, ensuring varying flame intensity at each adjustment position to meet diverse flame demands. However, existing technologies suffer from issues such as inaccurate limit settings due to large gaps, inconsistent flame intensity at the limit points, indistinct flame intensity variations between settings, numerous components making assembly difficult, and large space requirements. Summary of the Invention

[0003] One objective of this invention is to provide a flow regulating valve and a gas device in which the follower and the limiting member can be distributed along the axial direction of the valve stem, and the limiting assembly can be configured to be assembled along the axial direction of the valve stem, making the assembly method more convenient and also reducing the radial dimension of the flow regulating valve.

[0004] According to an embodiment of the present invention, a flow regulating valve includes: a valve body having a valve cavity and an inlet and an outlet communicating with the valve cavity; a valve core disposed in the valve cavity and controlling the flow rate of fluid output to the outlet by rotation; a valve stem being throttledly connected to the valve core to drive the valve core to rotate; and a limiting assembly including a follower and a limiting member, the follower being rotatable and throttledly connected to the valve stem, the limiting member and the follower being distributed along a first direction parallel to the rotation axis of the follower, wherein the follower is provided with a groove, and the limiting member is configured to be able to sink into the groove and to extend beyond the groove.

[0005] According to an embodiment of the present invention, the follower and the limiting member of the flow regulating valve can be distributed along the axial direction of the valve stem, and the limiting assembly can be configured to be assembled along the axial direction of the valve stem, which makes the assembly method more convenient and can also reduce the radial dimension of the flow regulating valve.

[0006] In addition, the flow regulating valve according to the above embodiments of the present invention may also have the following additional technical features: In some embodiments, the follower includes a central hole and a mating surface surrounding the central hole, the valve stem passes through the central hole, the follower is stationary relative to the valve stem in the rotation direction, the mating surface is located on one side of the follower along the first direction, the groove is located on the mating surface, and the limiting member has an elastic force that abuts against the mating surface along the first direction.

[0007] In some embodiments, the mating surface includes a plurality of protrusions distributed along a direction surrounding the central hole, with the grooves formed between adjacent protrusions.

[0008] In some embodiments, the limiting member includes a ball and a spring, the spring abutting against the ball along the first direction to provide the ball with an elastic force against the mating surface.

[0009] In some embodiments, the flow regulating valve includes a closed position and multiple open positions, and the groove includes multiple slots corresponding to the multiple open positions, wherein the limiting member is inserted into the corresponding groove at the open position.

[0010] In some embodiments, the limiting component includes: a main cover body, the main cover body including a mounting groove and a limiting groove, the limiting groove being disposed on the bottom surface of the mounting groove; a secondary cover body, the secondary cover body covering the main cover body, wherein the follower is rotatably disposed in the mounting groove, the main cover body and the secondary cover body cooperate to limit the follower; the limiting member is disposed in the limiting groove and extends to the surface of the follower.

[0011] In some embodiments, the valve body is provided with a mating part, and the limiting component and the mating part are distributed along the first direction; the main cover is provided with a first positioning post, the first positioning post extends along the first direction, the limiting groove is provided on the bottom surface of the mounting groove and extends into the first positioning post; the outer side of the mating part is provided with a clearance groove, and at least a portion of the first positioning post is provided in the clearance groove.

[0012] In some embodiments, the valve body is provided with a mating part, and the limiting component and the mating part are distributed along the first direction; the main cover is provided with a second positioning post, and the second positioning post extends along the first direction; the valve stem passes through the limiting component, the second positioning post is located on the side of the valve stem, the end face of the mating part facing the limiting component is provided with a positioning groove, and the second positioning post passes through the positioning groove.

[0013] In some embodiments, the flow regulating valve further includes an ignition switch, the limiting component has a latch on one side opposite to the second direction and is connected to the ignition switch on the other side, the latch is latched to the valve body, and the actuating end of the ignition switch is connected to the valve stem, triggering the ignition switch when the valve stem is pressed down.

[0014] In some embodiments, the valve core includes an inner cavity communicating with the inlet. The sidewall of the inner cavity is provided with a main air outlet and a plurality of secondary air outlets. The main air outlet and the plurality of secondary air outlets communicate with the inner cavity and are distributed around the rotation axis of the valve core. The inner wall surface of the valve cavity is provided with a first vent communicating with the outlet. The valve core rotates to allow the main air outlet and the plurality of secondary air outlets to switchably communicate with the first vent.

[0015] In some embodiments, the plurality of secondary air outlets are spaced apart on one side of the main air outlet along the direction surrounding the rotation axis.

[0016] In some embodiments, the air outlet area of ​​the adjacent secondary air outlet that is farther from the main air outlet is not greater than the air outlet area of ​​the one that is closer to the main air outlet.

[0017] In some embodiments, the plurality of secondary air outlets are arranged in multiple groups along a direction parallel to the rotation axis of the valve core, and the secondary air outlets in adjacent groups are staggered along the circumference and axial direction of the valve core.

[0018] In some embodiments, the secondary air outlet includes a recess and an orifice. The recess is located on the outer side of the valve core, and the orifice penetrates the bottom wall of the recess to connect the inner cavity and the corresponding recess. The orifice is located in the middle of the bottom wall of the recess.

[0019] In some embodiments, the outer surface of the valve core is provided with an adjustment groove, the adjustment groove is connected to the main air outlet and separated from the plurality of secondary air outlets, the adjustment groove is distributed around the rotation axis of the valve core, and the inner wall of the valve cavity is provided with a second vent that connects the adjustment groove and the outlet.

[0020] In some embodiments, the outer surface of the valve core is provided with an oil-retaining blind hole.

[0021] The gas appliance according to an embodiment of the present invention includes the aforementioned flow regulating valve. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a flow regulating valve according to an embodiment of the present invention.

[0023] Figure 2 This is a cross-sectional view of a flow regulating valve according to an embodiment of the present invention.

[0024] Figure 3 This is an exploded schematic diagram of a flow regulating valve according to an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the limiting component of a flow regulating valve according to an embodiment of the present invention.

[0026] Figure 5 This is another schematic diagram of the limiting component of a flow regulating valve according to an embodiment of the present invention.

[0027] Figure 6 This is an exploded view of the limiting component of a flow regulating valve according to an embodiment of the present invention.

[0028] Figure 7 This is another exploded view of the limiting assembly of a flow regulating valve according to an embodiment of the present invention.

[0029] Figure 8 This is a schematic diagram of the follower of a flow regulating valve according to an embodiment of the present invention.

[0030] Figure 9 This is another schematic diagram of the follower component of a flow regulating valve according to an embodiment of the present invention.

[0031] Figure 10 This is another schematic diagram of the follower of a flow regulating valve according to an embodiment of the present invention.

[0032] Figure 11 This is a schematic diagram of the valve body of a flow regulating valve according to an embodiment of the present invention.

[0033] Figure 12 This is one of the schematic diagrams of the valve core of a flow regulating valve according to an embodiment of the present invention.

[0034] Figure 13 This is a second schematic diagram of the valve core of a flow regulating valve according to an embodiment of the present invention.

[0035] Figure 14 This is a third schematic diagram of the valve core of a flow regulating valve according to an embodiment of the present invention.

[0036] Figure 15 This is the fourth schematic diagram of the valve core of a flow regulating valve according to an embodiment of the present invention.

[0037] Figure 16 This is the fifth schematic diagram of the valve core of a flow regulating valve according to an embodiment of the present invention.

[0038] Figure 17 This is a schematic diagram of the positions of a flow regulating valve according to an embodiment of the present invention.

[0039] Figure 18 This is a schematic diagram of the first position of a flow regulating valve according to an embodiment of the present invention.

[0040] Figure 19 This is a schematic diagram of the second position of the flow regulating valve according to an embodiment of the present invention.

[0041] Figure 20This is a schematic diagram of the third position of a flow regulating valve according to an embodiment of the present invention.

[0042] Figure 21 This is a schematic diagram of the fourth position of the flow regulating valve according to an embodiment of the present invention.

[0043] Figure 22 This is a schematic diagram of the fifth position of a flow regulating valve according to an embodiment of the present invention.

[0044] Figure 23 This is a schematic diagram of the sixth position of a flow regulating valve according to an embodiment of the present invention.

[0045] Figure 24 This is a schematic diagram of the seventh position of a flow regulating valve according to an embodiment of the present invention.

[0046] Figure 25 This is a schematic diagram of the eighth position of a flow regulating valve according to an embodiment of the present invention.

[0047] Figure 26 This is a schematic diagram of the ninth position of a flow regulating valve according to an embodiment of the present invention.

[0048] Figure label: Flow regulating valve 100, valve body 10, valve chamber 101, inlet 102, outlet 103, mating part 11, clearance groove 1101, positioning groove 1102, first vent 104, second vent 105, valve core 20, main vent 201, secondary vent 202, recess 206, hole 207, first secondary vent 2021, second secondary vent 2022, third secondary vent 2023, fourth secondary vent 2024, fifth secondary vent 2025, sixth secondary vent 2026, oil reservoir blind hole 203, first blind hole 2031, second blind hole 2026. 32, Inner cavity 204, Adjustment groove 205, Valve stem 30, Limiting assembly 40, Follower 41, Center hole 4101, Mating surface 4102, Protrusion 4103, Groove 4104, Limiting component 42, Ball bearing 421, Spring 422, Main cover 43, Mounting groove 4301, Limiting groove 4302, First positioning post 431, Second positioning post 432, Notch 4303, Buckle 433, Secondary cover 44, Ignition switch 51, Fine-tuning screw 52, ​​Valve needle 54, Valve needle spring 55, Lever 56, Solenoid valve 57, Bottom cover 58, Flat gasket 59, Sealing ring 60. Detailed Implementation

[0049] Embodiments of the present invention are described in detail below, examples of which are illustrated 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 intended to explain the present invention, and should not be construed as limiting the present invention.

[0050] like Figures 1-26 According to an embodiment of the present invention, a flow regulating valve 100 includes a valve body 10, a valve core 20, and a valve stem 30. The valve body 10 can be used to connect an upstream gas supply device and a downstream gas consumption device. The valve core 20 can be used to regulate the flow rate from the upstream gas supply device to the downstream gas consumption device. The valve stem 30 can be used by the user to rotate the valve core 20 and adjust its position by rotation.

[0051] Specifically, the valve body 10 has a valve cavity 101, an inlet 102, and an outlet 103. The inlet 102 is connected to the valve cavity 101, and the outlet 103 is also connected to the valve cavity 101. The valve core 20 is located in the valve cavity 101 and controls the flow rate of the fluid output to the outlet 103 by rotation. When this flow regulating valve 100 is applied to a gas circuit, the inlet 102 of the valve body 10 can be connected to a gas supply device (such as a municipal gas pipeline), and the outlet 103 of the valve body 10 can be connected to a gas-using device (such as the burner of a gas stove). The gas supplied by the gas supply device can enter the valve cavity 101 through the inlet 102 and exit from the outlet 103 after passing through the valve core 20. During rotation, the valve core 20 can adjust the flow area between the outlet 103 and the valve cavity 101, thereby controlling the gas flow rate at the outlet 103.

[0052] The valve stem 30 is driven to the valve core 20 to drive the valve core 20 to rotate. The valve stem 30 can be connected to a knob or the like. By rotating the valve stem 30, the rotation of the valve core 20 can be controlled, thereby adjusting the rotation angle of the valve core 20 and thus regulating the gas flow rate.

[0053] The flow control valve 100 also includes a limiting component 40, which can be used to limit the rotation angle of the valve core 20 and provide a range for the rotation of the valve stem 30, facilitating user control of the rotation angle of the valve core 20. The limiting component 40 includes a follower 41 and a limiting component 42. The follower 41 is rotatable and drively connected to the valve stem 30. The limiting component 42 and the follower 41 are distributed along a first direction parallel to the rotation axis of the follower 41. During the rotation of the valve stem 30, the follower 41 can rotate with the valve stem 30. When the follower 41 rotates to the preset position, the limiting member 42 can limit the follower 41, thereby limiting the valve stem 30 and the valve core 20 to the set position, so as to accurately control the gas flow of the outlet 103. Moreover, when the limiting member 42 limits the follower 41, it will apply a certain resistance force to the follower 41, the valve stem 30 and the valve core 20. At this time, the user can feel the resistance of the valve stem 30 and realize feedback.

[0054] The follower 41 has a groove 4104, and the limiting member 42 is configured to be able to sink into the groove 4104 and to pass over the groove 4104. That is, when the valve core 20, valve stem 30, and follower 41 rotate to the set position, the limiting member 42 will sink into the groove 4104. At this time, the limiting member 42 will provide a certain resistance to the rotation of the follower 41, thereby limiting the valve core 20 to the set position. When it is necessary to continue rotating the valve stem 30 (clockwise or counterclockwise), the force applied to the valve stem 30 acts on the follower 41. When the force applied to the valve stem 30 reaches a critical value, the valve stem 30 will drive the follower 41 to rotate. At this time, the limiting member 42 will pass over the groove 4104 to facilitate the smooth rotation of the follower 41.

[0055] According to the embodiment of the present invention, the flow regulating valve 100 can improve the control performance of the flow regulating valve 100. The addition of a gear structure to the stepless linear flow regulation structure, combined with the flow channel design of the valve core 20, allows the flow rate to change in multiple levels according to the limit of the gear structure, which facilitates the adjustment of the heat level and quickly and accurately finds the required heat level, thus meeting the needs of accurate control of various heat levels during cooking.

[0056] Furthermore, the follower 41 and the limiting member 42 can be distributed along the axial direction of the valve stem 30, and the limiting assembly 40 can be configured to be assembled along the axial direction of the valve stem 30, making assembly more convenient and reducing the radial dimension of the flow regulating valve 100. Additionally, during use, the valve stem 30 can extend vertically, allowing the flow regulating valve 100 to be installed from top to bottom, which is more convenient than a horizontal installation. Moreover, compared to a radially distributed limiting member 42 and follower 41, the radial dimension of the flow regulating valve 100 can be reduced, and the valve body 10 can have a structure to accommodate the limiting assembly 40, fully utilizing the space of the valve body 10 and improving space utilization.

[0057] In addition, the limiting member 42 in this invention may include a spring 422, which is used to give the limiting member 42 an elastic force to stop the follower member 41 along the axial direction of the valve stem 10. A limiting groove may be provided in the valve body 10. The spring moves in the limiting groove in a circumferential manner, and the deformation guidance is more uniform.

[0058] Combination Figures 1 to 10 In some embodiments, the follower 41 includes a central hole 4101 and a mating surface 4102 surrounding the central hole 4101. The valve stem 30 passes through the central hole 4101, and the follower 41 is stationary relative to the valve stem 30 in the rotation direction. Figure 1 and Figure 8As shown, to achieve relative stillness between the follower 41 and the valve stem 30, the valve stem 30 can be configured with a connection between an arc-shaped segment and a flat segment. The arc-shaped segment and the flat segment are distributed along the direction surrounding the axis of the valve stem 30, and the two ends of the arc-shaped segment are connected to the two ends of the flat segment, thereby constructing a keyway in the valve stem 30. In addition, the central hole 4101 of the follower 41 can be configured to include an arc-shaped segment and a flat segment. In this way, the relative stillness between the valve stem 30 and the follower 41 can be achieved through the cooperation between the flat segment of the valve stem 30 and the flat segment of the follower 41, as well as the cooperation between the arc-shaped segment of the valve stem 30 and the arc-shaped segment of the follower 41. During the rotation of the valve stem 30, the follower 41 will be driven to rotate, and the limiting of the follower 41 will restrict the rotation of the valve stem 30.

[0059] A mating surface 4102 is provided on one side of the follower 41 along the first direction, and a groove 4104 is provided on the mating surface 4102. The limiting member 42 has an elastic force that abuts against the mating surface 4102 along the first direction. By utilizing the elastic abutment of the limiting member 42 against the mating surface 4102 along the first direction, during the rotation of the follower 41, when the limiting member 42 is opposite to the groove 4104, the elastic force will cause the limiting member 42 to sink into the groove 4104. As the follower 41 continues to rotate, part of the force driving the follower 41 to rotate will act on the limiting member 42, overcoming the elastic force of the limiting member 42, thereby causing the limiting member 42 to disengage from the groove 4104, so that the limiting member 42 can pass over the groove 4104, allowing the follower 41 to rotate. By adding a gear limit component 40, there is a clear tactile limit during the adjustment process. Each limit position and the corresponding different rotation positions of the valve core 20 result in different flow outputs, which can achieve the purpose of quickly and accurately finding the required firepower position.

[0060] Among them, such as Figure 9 and Figure 10 The mating surface 4102 includes a plurality of protrusions 4103 distributed along the direction surrounding the central hole 4101, and a groove 4104 is formed between adjacent protrusions 4103.

[0061] For example, the mating surface 4102 may include two protrusions 4103, and a recess is formed between the two protrusions 4103. The recess is configured as a groove 4104, wherein the groove 4104 may be configured as a "V" shape with both sides gradually inclined outward toward the opening direction, so that the limiting member 42 can be more easily inserted into the groove 4104, and the limiting member 42 can be easily dislodged from the groove 4104 by rotating the valve stem 30.

[0062] In addition, the mating surface 4102 may also include three or more protrusions 4103, with a recess formed between each pair of adjacent protrusions 4103, and each recess constructs a groove 4104. In this way, during the rotation of the valve stem 30, the follower 41 can be limited at multiple angles by the limiting member 42, thereby giving the flow regulating valve 100 multiple positions.

[0063] Optionally, each protrusion 4103 may be included on a side that gradually converges in the protrusion direction. The groove 4104 formed between two adjacent protrusions 4103 can be set in a generally "V" shape, thereby setting the mating surface 4102 in a wave shape. This allows the limiting member 42 to have an appropriate limiting effect on the follower 41 while also facilitating the disengagement of the limiting member 42 from the groove 4104. In this invention, the limiting position of the gear limiting component 40 can be set with one or more, and the tactile experience can be adjusted.

[0064] For example, multiple grooves 4104 can be provided on the mating surface 4102. When the valve stem 30 is in the initial position, the limiting member 42 is engaged in one groove 4104, and the flow regulating valve 100 is in the closed state. After the valve stem 30 rotates by a first preset angle (e.g., 90°), the limiting member 42 is engaged in another groove 4104, and the flow regulating valve 100 is in the maximum output flow state. When the valve stem 30 rotates by a second preset angle (the rotation angle relative to the initial position, e.g., 270°), the limiting member 42 is engaged in yet another groove 4104, and the flow regulating valve 100 is in the minimum output flow state. In other words, the multiple grooves 4104 may include a first groove, a second groove, and a third groove. With the axis of the follower 41 as the center, the central angle between the first groove and the second groove is 90°, and the central angle between the first groove and the third groove is 270°.

[0065] like Figure 6 and Figure 7 The limiting member 42 includes a ball 421 and a spring 422. The spring 422 abuts against the ball 421 in a first direction, providing elastic force for the ball 421 to abut against the mating surface 4102. The spring 422 can provide elastic force to the ball 421, so that when the follower 41 rotates to the characteristic position, the ball 421 can quickly sink into the groove 4104 under the action of the elastic force of the spring 422, limiting the follower 41. In addition, when the follower 41 rotates, the ball 421 can rotate along the mating surface 4102 with a small frictional force.

[0066] like Figure 10 and Figure 17In some embodiments, the flow regulating valve 100 includes a closed position and multiple open positions. The groove 4104 includes multiple slots corresponding to the multiple open positions. At each open position, the limiting member 42 is engaged with the corresponding groove 4104. Alternatively, one groove 4104 may be provided corresponding to the closed position. By utilizing the cooperation between the groove 4104 and the limiting member 42, the flow regulating valve 100 can be stably maintained at the set position, thereby improving the stability of the flow regulating valve 100.

[0067] like Figures 3 to 7 In some embodiments, the limiting component 40 includes a main cover 43 and a secondary cover 44. The main cover 43 includes a mounting groove 4301 and a limiting groove 4302, with the limiting groove 4302 located on the bottom surface of the mounting groove 4301. The secondary cover 44 covers the main cover 43, wherein a follower 41 is rotatably disposed in the mounting groove 4301, and the main cover 43 and the secondary cover 44 cooperate to limit the follower 41. A limiting member 42 is disposed in the limiting groove 4302 and extends to the surface of the follower 41. This simplifies the structure of the limiting component 40, facilitates effective positioning of the follower 41, and allows the limiting component 40 to be configured as a separate module, thereby enabling rapid installation and positioning of the limiting component 40.

[0068] like Figure 6 and Figure 7 The valve body 10 is provided with a mating part 11, and the limiting component 40 and the mating part 11 are distributed along a first direction (refer to the up and down direction in the attached figure). The main cover 43 is provided with a first positioning post 431, which extends along the first direction. A limiting groove 4302 is provided on the bottom surface of the mounting groove 4301 and extends into the first positioning post 431. The outer side of the mating part 11 is provided with a clearance groove 1101, and at least a part of the first positioning post 431 is provided in the clearance groove 1101. The clearance groove 1101 can be used to make way for the first positioning post 431, which not only facilitates the quick assembly of the limiting component 40 and the valve body 10, but also limits the first positioning post 431, restricting the rotation of the limiting component 40 as a whole relative to the valve body 10, and improving the stability of the fit between the limiting component 40 and the valve body 10. Furthermore, since the limiting member 42 and the follower member 41 are distributed along the first direction, and the limiting groove 4302 for accommodating the limiting member 42 is formed by the first positioning post 431, the radial dimension of the limiting assembly 40 can be reduced, thereby reducing the overall size of the valve body 10; moreover, the limiting assembly 40 can be limited by the cooperation between the relief groove 1101 and the first positioning post 431, which can further simplify the structure of the flow regulating valve 100, improve the assembly efficiency and stability of the flow regulating valve 100.

[0069] like Figure 6 and Figure 7The valve body 10 is provided with a mating part 11, and the limiting component 40 and the mating part 11 are distributed along a first direction. The main cover 43 is provided with a second positioning post 432, which extends along the first direction. The valve stem 30 passes through the limiting component 40, and the second positioning post 432 is located on the side of the valve stem 30. The end face of the mating part 11 facing the limiting component 40 is provided with a positioning groove 1102, and the second positioning post 432 passes through the positioning groove 1102. The second positioning post 432 may include one or more, and the first positioning post 431 and the first positioning post 432 may be arranged to be distributed circumferentially along the limiting component 40. Through the cooperation of the first positioning post 431 with the clearance groove 1101 and the cooperation of the second positioning post 432 with the positioning groove 1102, the limiting component 40 can be stably installed onto the valve body 10, improving the assembly efficiency and stability of the limiting component 40 and the valve body 10.

[0070] Among them, such as Figure 7 The end face of the second positioning post 432 may be provided with a notch 4303. The notch 4303 extends along the extension direction of the second positioning post 432 and penetrates the second positioning post 432 radially. When the second positioning post 432 is inserted into the positioning groove 1102, the part of the first positioning post 431 located on both sides of the notch 4303 may be brought inward to facilitate the quick engagement of the second positioning post 432 with the positioning groove 1102.

[0071] In some embodiments, such as Figures 1 to 7 The flow control valve 100 also includes an ignition switch 51. The limiting assembly 40 has a latch 433 on one side opposite to the limiting assembly 40 along the second direction and is connected to the ignition switch 51 on the other side. The latch 433 is latched to the valve body 10. The actuating end of the ignition switch 51 is connected to the valve stem 30, triggering the ignition switch 51 when the valve stem 30 is pressed down. By integrating the ignition switch with the flow control valve 100, the structure of the flow control valve 100 can be simplified. Furthermore, the limiting assembly 40 can be stably positioned on the valve body 10 using the ignition switch 51 and the latch 433.

[0072] In this assembly, when the limiting component 40 is assembled with the valve body 10, the end of the valve stem 30 furthest from the valve core 20 is inserted into the central hole 4101 of the follower 41, and the valve stem 30 and the follower 41 are keyed together. A latch 433 on one side of the limiting component 40 engages with the valve body 10, connecting one side of the limiting component 40 to the valve body 10. An ignition switch 51 is located on the other side of the valve stem 30, and its actuating part engages with the mating groove of the valve stem 30. This allows the actuating part to trigger the ignition switch 51 when the valve stem 30 is pressed axially downwards, thereby igniting the flow regulating valve 100. Integrating the limiting component 40 and the ignition signal triggering structure into a single unit reduces assembly difficulty and space requirements, improving production and assembly efficiency.

[0073] like Figures 12 to 16This invention provides a valve core 20. According to an embodiment of the invention, the valve core 20 includes an inner cavity 204 communicating with an inlet 102. The sidewall of the inner cavity 204 is provided with a main air outlet 201 and multiple auxiliary air outlets 202. The main air outlet 201 and the multiple auxiliary air outlets 202 communicate with the inner cavity 204 and are distributed around the rotation axis of the valve core 20. The inner wall surface of the valve cavity 101 is provided with a first vent 104 communicating with an outlet 103. The valve core 20 rotates to allow the main air outlet 201 and the multiple auxiliary air outlets 202 to switchably communicate with the first vent 104. In a flow regulating valve 100 having this valve core 20, the valve core 20 can be driven to rotate. During the rotation of the valve core 20, the inner cavity 204 of the valve core 20 communicates with the inlet 102, and the main air outlet 201 and the multiple auxiliary air outlets 202 on the sidewall of the inner cavity 204 can switchably communicate with the first vent 104, thereby communicating with the outlet 103. The flow rate can be adjusted by rotating the valve core 20 to switch the total flow area of ​​the air outlets (main air outlet 201 and multiple auxiliary air outlets 202) connected to the first air outlet, thereby achieving flow rate regulation.

[0074] The valve core 20 of the present invention can control the flow rate output to the outlet 103 by adjusting the number of air outlets connected to the first air port 104 and the total flow area. This can improve the stability and accuracy of the flow regulation valve 100 in regulating the flow rate. Moreover, it can have relatively consistent flow regulation performance for products produced in different batches with different precision, thereby improving the accuracy of flow regulation.

[0075] In addition, by setting a main air outlet 201 and multiple secondary air outlets 202 in the valve core 20, and by combining it with the aforementioned limiting component 40, the accuracy and consistency of flow regulation can be further improved.

[0076] like Figures 12 to 17 Multiple auxiliary air outlets 202 are spaced apart on one side of the main air outlet 201 along the direction surrounding the rotation axis. This allows for convenient adjustment of the outlet flow rate 103 of the flow regulating valve 100. The flow area of ​​the auxiliary air outlets 202 is smaller than that of the main air outlet 201. Furthermore, the total flow area of ​​the multiple auxiliary air outlets 202 can be set to be smaller than that of the main air outlet 201. Thus, when the valve core 20 rotates away from the closed position, the main air outlet 201 will first connect to the first vent 104, and the multiple auxiliary air outlets 202 will subsequently connect to the first vent. As the valve core 20 rotates, the output flow rate of the flow regulating valve 100 gradually decreases, thereby facilitating control of the output flow rate of the flow regulating valve 100.

[0077] like Figure 12 and Figure 17In some embodiments, the plurality of secondary air outlets 202 include a first secondary air outlet 2021, a second secondary air outlet 2022, a third secondary air outlet 2023, a fourth secondary air outlet 2024, a fifth secondary air outlet 2025 and a sixth secondary air outlet 2026 distributed in a direction from near the main air outlet 201 to away from the main air outlet 201. Along the circumference of the valve core 20 away from the main air outlet 201, the first auxiliary air outlet 2021, the second auxiliary air outlet 2022, the third auxiliary air outlet 2023, the fourth auxiliary air outlet 2024, the fifth auxiliary air outlet 2025, and the sixth auxiliary air outlet 2026 are sequentially distributed. As the valve core 20 rotates away from the closed position, the main air outlet 201, the first auxiliary air outlet 2021, the second auxiliary air outlet 2022, the third auxiliary air outlet 2023, the fourth auxiliary air outlet 2024, the fifth auxiliary air outlet 2025, and the sixth auxiliary air outlet 2026 are sequentially connected to the first vent 104 and sequentially disconnected from the first vent 104. This allows for convenient adjustment of the output flow rate.

[0078] Of course, the present invention is mainly described using the example of setting a first auxiliary air outlet 2021, a second auxiliary air outlet 2022, a third auxiliary air outlet 2023, a fourth auxiliary air outlet 2024, a fifth auxiliary air outlet 2025 and a sixth auxiliary air outlet 2026. This is not a limitation on the scope of protection of the present invention. The number of auxiliary air outlets 202 in the present invention can also be one, two, three or eight, etc.

[0079] The distribution of the first auxiliary air outlet 2021, the second auxiliary air outlet 2022, the third auxiliary air outlet 2023, the fourth auxiliary air outlet 2024, the fifth auxiliary air outlet 2025 and the sixth auxiliary air outlet 2026 in this invention are described in detail below with reference to the accompanying drawings.

[0080] In the projection of the valve core 20 along its rotation axis onto a circle centered on the rotation axis, the central angle between the center of the first auxiliary air outlet 2021 and the center of the main air outlet 201 is 35°±1.5°; the central angle between the center of the second auxiliary air outlet 2022 and the center of the main air outlet 201 is 60°±1.5°; the central angle between the center of the third auxiliary air outlet 2023 and the center of the main air outlet 201 is 70°±1.5°; the central angle between the center of the fourth auxiliary air outlet 2024 and the center of the main air outlet 201 is 105°±1.5°; the central angle between the center of the fifth auxiliary air outlet 2025 and the center of the main air outlet 201 is 120°±1.5°; and the central angle between the center of the sixth auxiliary air outlet 2026 and the center of the main air outlet 201 is 140°±1.5°. These angles are preferred values ​​only and can be set to other values.

[0081] The diameter of the first auxiliary air outlet 2021 is 0.8 mm ± 0.01 mm; the diameter of the second auxiliary air outlet 2022 is 0.5 mm ± 0.01 mm; the diameter of the third auxiliary air outlet 2023 is 0.4 mm ± 0.01 mm; the diameter of the fourth auxiliary air outlet 2024 is 0.4 mm ± 0.01 mm; the diameter of the fifth auxiliary air outlet 2025 is 0.3 mm ± 0.01 mm; and the diameter of the sixth auxiliary air outlet 2026 is 0.3 mm ± 0.01 mm. These diameter values ​​are only preferred; other values ​​can also be set, following a rule of decreasing size. When the main air outlet 201 is at a 90-degree angle, it is directly opposite the first air outlet channel of the valve body 10.

[0082] With the above settings, the flow regulating valve 100 can be set to multiple levels, and can have the required flow rate at different levels, which is convenient for adjustment. Combined with the aforementioned limit component 40, it can achieve more precise flow rate adjustment.

[0083] Combination Figure 10 and Figure 17 The flow regulating valve 100 includes a closed position X0 and multiple open positions, wherein the multiple open positions include at least one of a first position X1, a second position X2, a third position X3, a fourth position X4, a fifth position X5, a sixth position X6, a seventh position X7, an eighth position X8, and a ninth position X9. The rotation angle α1 of the valve core 20 relative to the closed position in the first position is 90°±1.5°; the rotation angle α2 of the valve core 20 relative to the closed position in the second position is 112.5°±1.5°; and the rotation angle α3 of the valve core 20 relative to the closed position in the third position is 135°±1.5°. The rotation angle α4 of valve core 20 relative to the closed position in the fourth position is 157.5°±1.5°; the rotation angle α5 of valve core 20 relative to the closed position in the fifth position is 180°±1.5°; the rotation angle α6 of valve core 20 relative to the closed position in the sixth position is 202.5°±1.5°; the rotation angle α7 of valve core 20 relative to the closed position in the seventh position is 225°±1.5°; the rotation angle α8 of valve core 20 relative to the closed position in the eighth position is 247.5°±1.5°; and the rotation angle α9 of valve core 20 relative to the closed position in the ninth position is 270°±1.5°. This embodiment has a 10-position structure. These angles are only preferred and can be set to other values.

[0084] In addition, the flow regulating valve 100 includes a closed position and multiple open positions, wherein the multiple open positions include at least one of a first position, a second position, a third position, a fourth position, a fifth position, a sixth position, a seventh position, an eighth position, and a ninth position. like Figures 18 to 26In the first position, the first vent 104 connects the main vent and the first secondary vent. In the second position, the first vent 104 is connected to the main vent, the first secondary vent, and the second secondary vent; in the third position, the first vent 104 is connected to the first secondary vent, the second secondary vent, and the third secondary vent; in the fourth position, the first vent 104 is connected to the second secondary vent, the third secondary vent, the fourth secondary vent, and the fifth secondary vent; in the fifth position, the first vent 104 is connected to the third secondary vent, the fourth secondary vent, and the fifth secondary vent; in the sixth position, the first vent 104 is connected to the fourth secondary vent, the fifth secondary vent, and the sixth secondary vent; in the seventh position, the first vent 104 is connected to the fifth secondary vent and the sixth secondary vent; in the eighth position, the first vent 104 is connected to the sixth secondary vent; and in the ninth position, the first vent 104 is disconnected from the multiple secondary vents.

[0085] In some embodiments, such as Figures 12 to 17 The outer surface of the valve core 20 is provided with an adjusting groove 205, which connects to the main air outlet 201 and is separated from multiple auxiliary air outlets 202. The adjusting groove 205 is distributed around the rotation axis of the valve core 20. The inner wall of the valve cavity 101 is provided with a second vent 105 connecting the adjusting groove 205 and the outlet 103. The adjusting groove 205 can be used to supplement the flow rate at the outlet 103 of the flow regulating valve 100, preventing the output flow rate of the flow regulating valve 100 from dropping to zero during the regulation process. This is especially important when the flow regulating valve 100 is used for gas regulation, as it can prevent the flame from going out due to the output flow rate of the flow regulating valve 100 dropping to zero. By maintaining the flame through the regulating valve, the stable operation and safety of gas equipment equipped with this flow regulating valve 100 can be improved.

[0086] Optionally, the flow regulating valve 100 includes a closed position and multiple open positions, wherein the multiple open positions include at least one of a first position, a second position, a third position, a fourth position, a fifth position, a sixth position, a seventh position, an eighth position, and a ninth position. In the closed position and the first position, the second vent 105 is disconnected from the regulating groove 205; in the second position, the third position, the fourth position, the fifth position, the sixth position, the seventh position, and the eighth position, the second vent 105 is connected to the regulating groove 205.

[0087] Among them, such as Figure 1The flow regulating valve 100 includes a fine-tuning screw 52, ​​which is located on the valve body 10 and used to control the flow rate between the second vent 105 and the outlet 103. The fine-tuning screw 52 can be used to adjust the flow rate, so that flow regulating valves 100 produced in different batches or at different times can have a relatively consistent output flow rate. The fine-tuning screw 52 can be set to be adjusted at the factory or when adjustment is required. During daily use, the fine-tuning screw 52 will maintain a relatively fixed flow rate between the second vent 105 and the outlet 103.

[0088] In combination with the foregoing, such as Figure 18 In the first gear position, which is a 90-degree gear position, the first vent 104 is connected to the main vent 201 and the first auxiliary vent 2021 of the valve core, and the second vent 105 is not vented. At this time, the flow channel area is the largest. like Figure 19 In the second gear position, which can be the 112.5 degree gear position, the first vent 104 is connected to the main vent 201 and the first auxiliary vent 2021 and the second auxiliary vent 2022 of the valve core. The second vent 105 starts to connect with the adjustment groove 205 for ventilation (from this gear position to the last gear position, the flow rate of the second vent 105 through the fine adjustment screw 52 remains unchanged). At this time, the flow channel area is less than that of the first gear position. like Figure 20 In the third gear position, which can be a 135-degree gear position, the first vent 104 has been disconnected from the main vent and is only connected to the first auxiliary vent 2021, the second auxiliary vent 2022, and the third auxiliary vent 2023 of the valve core. The second vent 105 remains connected to the regulating groove 205 for ventilation. At this time, the flow channel area is less than that of the second gear position. like Figure 21 In the fourth position, which is the 157.5-degree position, the first vent 104 is disconnected from the first auxiliary vent 2021 and is only connected to the second auxiliary vent 2022, the third auxiliary vent 2023, the fourth auxiliary vent 2024, and the fifth auxiliary vent 2025 of the valve core. The second vent 105 remains connected to the regulating groove 205 for ventilation. At this time, the flow channel area is less than that of the third position. like Figure 22 In the fifth position, which can be a 180-degree position, the first vent 104 is disconnected from the second auxiliary vent 2022 and is only connected to the third auxiliary vent 2023, the fourth auxiliary vent 2024, and the fifth auxiliary vent 2025 of the valve core. The second vent 105 remains connected to the regulating groove 205 for ventilation. At this time, the flow channel area is less than that of the fourth position. like Figure 23In the sixth gear position, which can be the 202.5 degree gear position, the first vent 104 has been disconnected from the third auxiliary vent 2023 and is only connected to the fourth auxiliary vent 2024, the fifth auxiliary vent 2025, and the sixth auxiliary vent 2026 of the valve core. The second vent 105 remains connected to the regulating groove 205 for ventilation. At this time, the flow channel area is less than that of the fifth gear position. like Figure 24 In the seventh position, which can be the 225-degree position, the first vent 104 has been disconnected from the fifth auxiliary vent 2025 and is only connected to the fifth auxiliary vent 2025 and the sixth auxiliary vent 2026 of the valve core. The second vent 105 remains connected to the adjustment groove 205 for ventilation. At this time, the flow channel area is less than that of the sixth position. like Figure 25 In the eighth position, which can be the 247.5 degree position, the first vent 104 has been disconnected from the fifth auxiliary vent 2025 and is only connected to the sixth auxiliary vent 2026 of the valve core. The second vent 105 remains connected to the adjustment groove 205 for ventilation. At this time, the flow channel area is second to that of the seventh position. like Figure 26 In the ninth gear position, which is a 270-degree gear position, the first vent 104 has been disconnected from the sixth auxiliary vent 2026, and the second vent 105 remains connected to the adjustment groove 205 for ventilation. At this time, the flow channel area is less than that of the eighth gear position.

[0089] like Figure 12 , Figure 14 and Figure 15 Multiple auxiliary air outlets 202 are arranged in multiple groups along a direction parallel to the rotation axis of the valve core 20, and the auxiliary air outlets 202 in adjacent groups are staggered in the circumferential and axial directions of the valve core 20. The flow channels of the valve core 20 and the valve body 10 are designed with different heights and orifice sizes. Multiple different flow channel combinations, together with the valve body 10, form different throttling areas during the rotation of the valve core 20, resulting in different firepower outputs.

[0090] In some embodiments, the outlet area of ​​the adjacent secondary outlet 202 that is farther from the main outlet 201 is no greater than the outlet area of ​​the one that is closer to the main outlet 201. This facilitates control of the outlet flow rate of the flow regulating valve 100 via the valve core 20.

[0091] The secondary air outlet 202 includes a recess 206 and an orifice 207. The recess 206 is located on the outer side of the valve core 20, and the orifice 207 penetrates the bottom wall of the recess 206 to connect the inner cavity 204 and the corresponding recess 206. The orifice 207 is located in the middle of the bottom wall of the recess 206. This facilitates control of the flow rate of the secondary air outlet 202 and enables stable communication between the secondary air outlet 202 and the first air port, thus improving the stability of the flow regulating valve 100.

[0092] like Figure 16 In some embodiments, the outer surface of the valve core 20 is provided with an oil-retaining blind hole 203, which does not penetrate the side wall of the valve core 20. The oil-retaining feature on the valve core 20 prevents excessive grease from clogging and affecting the flow output.

[0093] The oil reservoir blind hole 203 includes a first blind hole 2031, which is separated from the regulating groove 205, the main vent 201, and multiple auxiliary vents 202. Alternatively, the oil reservoir blind hole 203 includes a second blind hole 2032, which is connected to the regulating groove 205 and is located at the end of the regulating groove 205 opposite to the main vent 201.

[0094] The flow regulating valve 100 in this invention can be used to regulate the flow of gas.

[0095] like Figure 2 The gas valve includes parts such as valve body 10, valve seat, valve stem 30, valve needle 54, valve needle spring 55, lever 56, solenoid valve 57, valve core 20, bottom cover 58, fine-tuning screw 52, ​​flat washer 59, and sealing ring 60. When the gas valve is working, the valve stem 30 is pressed down until the radial protrusion at the bottom exceeds the child lock groove of the valve seat. The child lock is released and the valve stem 30 can be rotated to open the valve. Rotate 90° to the maximum flame position, and then rotate the valve stem 30 to adjust until the minimum flame position. During the adjustment process, the matching position of valve core 20 and valve body 10 is different at different positions, and the flame output is different. When the valve stem 30 is pressed down, it drives the valve needle 54 and the lever 56 to open the solenoid valve 57. Rotating the valve stem 30 drives the valve core 20 to rotate and connect the gas passage between the gas inlet and the gas outlet. When the valve stem 30 is pressed down, it drives the trigger rod of the ignition signal triggering mechanism to press down, so that the mechanism is turned on and sends out an ignition signal. Under the action of the ignition needle, the gas is ignited. The thermocouple of the gas stove provides current to maintain the solenoid valve 57 in the open state and maintain the continuous output of gas. In related technologies, the valve body 10 has no limit component 40, the fire control is not precise enough, and the adjustment groove 205 has a simple structure and a small adjustment range; other valves with limit adjustment have uneven fire changes during the adjustment process, and there may be sudden changes in fire when the fire of adjacent limit switches are switched; the limit component 40 is arranged independently and the assembly is complicated.

[0096] This invention will solve the problems of inaccurate flame adjustment and insignificant flame change during the gas valve flow regulation process. It can quickly and accurately adjust to the required flame during use, and the limit component 40 and ignition switch 51 are designed as one unit for easy assembly.

[0097] The gear position limiting assembly 40 consists of a main cover 43, a follower 41, a spring 422, and a ball bearing 421 (e.g., a steel ball). The main cover 43 is integrated with the ignition switch 51. The limiting assembly 40 is mounted on the valve body 10 and simultaneously fixes the ignition switch 51 to the valve body 10. The spring 422 and the ball bearing 421 are positioned between the main cover 43 and the follower 41, and are axially engaged with the follower 41. The main cover 43 is fixed to the valve body 10, and the follower 41 can rotate around its center. The limiting points of the limiting component 40 include the initial 0° position (closed position) and multiple positions arranged between 90° and 270° (maximum fire to minimum fire). The follower 41 cooperates with the valve stem 30 and can slide axially relative to the valve stem 30, rotating synchronously with the valve stem 30. The bottom of the follower 41 has two adjacent crests forming a trough position where the ball 421 can be placed. When the follower 41 rotates from the initial position, the ball 421 flips from the trough position over the crest to the 90° maximum fire position, reaching the maximum fire limit position. Then it gradually flips over the crest to the trough position, forming the limiting positions at different angles. Different angle positions output different firepower, precisely controlling the change of firepower.

[0098] The ignition switch 51 and the main cover 43 of the limit assembly 40 are integrated, reducing assembly steps and assembly space.

[0099] The gas valve body 10 places the first and second gas outlet holes on the tapered cavity at different heights. The valve core 20 flow channel consists of a main gas outlet 201, an adjusting groove 205 communicating with the main gas outlet 201, and multiple auxiliary gas outlet holes 202 of different diameters. The adjusting groove 205 has the same width and depth, while the auxiliary gas outlet holes 202 have different spacing and heights. The specific matching state of the valve core 20 flow channel and the gas outlet channel of the valve body 10 at different gear positions is shown in the figure.

[0100] After the valve stem 30 is pressed down to unlock, it rotates to open the valve, connecting the gas path and outputting gas. When adjusting the gas valve flow rate, rotating the valve stem 30 causes the valve core 20 to rotate within the conical cavity of the valve body 10. Different rotation angles result in different relative positions between the gas orifice of the valve core 20 and the flow channel orifice of the valve body 10, leading to different throttling areas in the gas path. The flow rate at the gas valve outlet varies according to these throttling areas. During the adjustment process, as the valve stem 30 rotates, the main outlet orifice 201 of the valve core 20 connects with the first outlet channel orifice of the valve body 10, allowing gas to flow through the gas valve outlet. The throttling area formed by the main outlet orifice 201 of the valve core 20 and the first outlet channel of the valve body 10 is at its maximum when the valve stem 30 rotates to the 90° position. When the gas flow reaches its maximum value, during the rotation of the valve stem after 3090°, the throttling area of ​​the gas passage formed by the main outlet hole 201 of the valve core 20 and the first outlet channel hole of the valve body 10 gradually decreases and is replaced by the gas passage formed by the auxiliary outlet hole 202 and the first outlet channel hole of the valve body 10. Before the main and auxiliary outlet holes 202 of the valve core 20 and the first outlet channel hole of the valve body 10 are completely misaligned, the regulating groove 205 connected to the main outlet hole 201 and the second outlet channel hole of the valve body 10 remain connected, so that the minimum flow remains unchanged. The consistent width and depth of the regulating groove 205 can better maintain the stability of the minimum output flow and increase the adjustment range. A gear limit component 40 is added, which works in conjunction with the rotation of the valve stem 30 to create a gear feel. The number of gears and the feel can be quickly and easily adjusted by changing component parameters (such as the elasticity of the spring 422 and the relative height and curvature of the peaks and troughs at the bottom of the rotating shaft). The limit points correspond to different fire positions, and the valve body 10 can be quickly rotated to the required fire position during use, saving time for fire adjustment and improving the accuracy of fire control. The fit clearance between the valve stem 30 and the limit component 40 is smaller than the fit clearance between the valve stem 30 and the valve core 20. When adjusted to the limit point of the required position, the valve stem 30's idling rotation will not cause a change in fire, and the fire control at each limit point is more stable. This embodiment has a 10-level structure, namely 0°, 90°, 112.5°, 135°, 157.5°, 180°, 202.5°, 225°, 247.5°, and 270°. Spring 422 and ball 421 are placed between main cover 43 and follower 41, and are axially movable with the limiting point on follower 41; The gear limit component 40 and the ignition switch 51 are integrated into one unit, which reduces the number of parts, saves space for part arrangement, reduces assembly difficulty, and improves assembly efficiency. The valve body 10 has different heights for the outlet air passage holes on its tapered surface. During the flow regulation process when the valve stem 30 drives the valve core 20 to rotate, the main outlet hole 201 of the valve core 20 is connected to the second outlet air passage hole of the valve body 10 through the adjustment groove 205 connected to the main outlet hole 201. The flow passage of the valve core 20 is provided with multiple secondary outlet holes 202 of different diameters. The spacing and height of the secondary outlet holes 202 are different, which increases the flow regulation range and improves the flow regulation performance. The output flow changes more evenly during the rotation of the valve core 20.

[0101] In addition, the present invention also provides a gas appliance including the aforementioned flow regulating valve. The flow rate of the gas supplied to the gas appliance can be adjusted using the aforementioned flow regulating valve, thereby achieving adjustments to the heat level, cooking power, etc.

[0102] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0103] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0104] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0105] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0106] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0107] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A flow regulating valve, characterized in that, include: A valve body, wherein the valve body is provided with a valve cavity and an inlet and an outlet communicating with the valve cavity; A valve core, which is disposed in the valve cavity and controls the flow rate of the fluid output to the outlet by rotation; A valve stem, which is kinetically connected to the valve core to drive the valve core to rotate; A limiting assembly includes a follower and a limiting member. The follower is rotatable and drively connected to the valve stem. The limiting member and the follower are distributed along a first direction parallel to the rotation axis of the follower. The follower is provided with a groove, and the limiting member is configured to be able to sink into the groove and to pass over the groove.

2. The flow regulating valve according to claim 1, characterized in that, The follower includes a central hole and a mating surface surrounding the central hole. The valve stem passes through the central hole. The follower is stationary relative to the valve stem in the rotation direction. The mating surface is located on one side of the follower along the first direction. The groove is located on the mating surface. The limiting member has an elastic force that abuts against the mating surface along the first direction.

3. The flow regulating valve according to claim 2, characterized in that, The mating surface includes a plurality of protrusions distributed along the direction surrounding the central hole, and the grooves are formed between adjacent protrusions.

4. The flow regulating valve according to claim 2, characterized in that, The limiting member includes a ball and a spring. The spring abuts against the ball in the first direction to provide the ball with an elastic force that abuts against the mating surface.

5. The flow regulating valve according to claim 1, characterized in that, The flow regulating valve includes a closed position and multiple open positions, and the groove includes multiple slots corresponding to the multiple open positions, wherein the limiting member is inserted into the corresponding groove in the open position.

6. The flow regulating valve according to any one of claims 1-5, characterized in that, The limiting component includes: The main cover body includes a mounting groove and a limiting groove, wherein the limiting groove is disposed on the bottom surface of the mounting groove; The secondary cover body covers the main cover body. The follower is rotatably disposed in the mounting groove, and the main cover and the secondary cover cooperate to limit the follower; the limiting member is disposed in the limiting groove and extends to the surface of the follower.

7. The flow regulating valve according to claim 6, characterized in that, The valve body is provided with a mating part, and the limiting component and the mating part are distributed along the first direction; the main cover is provided with a first positioning post, the first positioning post extends along the first direction, and the limiting groove is provided on the bottom surface of the mounting groove and extends into the first positioning post. The outer side of the mating part is provided with a relief groove, and at least a portion of the first positioning post is disposed in the relief groove.

8. The flow regulating valve according to claim 6, characterized in that, The valve body is provided with a mating part, and the limiting component and the mating part are distributed along the first direction; the main cover is provided with a second positioning post, and the second positioning post extends along the first direction; The valve stem passes through the limiting component, the second positioning post is located on the side of the valve stem, the end face of the mating part facing the limiting component is provided with a positioning groove, and the second positioning post passes through the positioning groove.

9. The flow regulating valve according to claim 1, characterized in that, The flow regulating valve also includes an ignition switch. The limiting component has a buckle on one side opposite to the second direction and is connected to the ignition switch on the other side. The buckle is buckled to the valve body. The actuating end of the ignition switch is connected to the valve stem and triggers the ignition switch when the valve stem is pressed down.

10. The flow regulating valve according to claim 1, characterized in that, The valve core includes an inner cavity communicating with the inlet. The sidewall of the inner cavity is provided with a main air outlet and multiple secondary air outlets. The main air outlet and the multiple secondary air outlets communicate with the inner cavity and are distributed around the rotation axis of the valve core. The inner wall of the valve cavity is provided with a first vent that connects to the outlet. The valve core can be rotated to switch between the main vent and the plurality of secondary vents connecting to the first vent.

11. The flow regulating valve according to claim 10, characterized in that, The plurality of secondary air outlets are distributed at intervals on one side of the main air outlet along the direction surrounding the rotation axis.

12. The flow regulating valve according to claim 11, characterized in that, The air outlet area of ​​the secondary air outlet that is farther away from the main air outlet is not greater than the air outlet area of ​​the secondary air outlet that is closer to the main air outlet.

13. The flow regulating valve according to claim 10, characterized in that, The multiple auxiliary air outlets are arranged in multiple groups along a direction parallel to the rotation axis of the valve core, and the auxiliary air outlets in adjacent groups are staggered along the circumference and axial direction of the valve core.

14. The flow regulating valve according to claim 10, characterized in that, The secondary air outlet includes a recess and an orifice. The recess is located on the outer side of the valve core, and the orifice penetrates the bottom wall of the recess to connect the inner cavity and the corresponding recess. The orifice is located in the middle of the bottom wall of the recess.

15. The flow regulating valve according to claim 10, characterized in that, The outer surface of the valve core is provided with an adjustment groove, which is connected to the main air outlet and separated from the multiple secondary air outlets. The adjustment groove is distributed around the rotation axis of the valve core, and the inner wall of the valve cavity is provided with a second vent that connects the adjustment groove and the outlet.

16. The flow regulating valve according to claim 10, characterized in that, The outer side of the valve core is provided with an oil-retaining blind hole.

17. A gas-fired appliance, characterized in that, Includes the flow regulating valve according to any one of claims 1-16.

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