Valve convenient for adjusting gas flow

Abstract

The utility model discloses a valve convenient to adjust gas flow, which comprises a valve body and an adjusting screw, the valve body is provided with a fuel gas channel and an ever-burning fire output channel, and the ever-burning fire output channel is respectively communicated with the fuel gas channel and the outside of the valve body; the adjusting screw can extend into the ever-burning fire output channel, a communicating hole is formed in the position, corresponding to the ever-burning fire output channel, of the adjusting screw, and the two ends of the communicating hole are communicated with an air inlet and an air outlet of the ever-burning fire output channel respectively; the communication hole is formed in the adjusting screw, when the minimum flame of the ever-burning fire is needed, the adjusting screw is screwed to be tightest, the side edge of the adjusting screw is connected with the ever-burning fire output channel in a sealed mode, gas in the ever-burning fire output channel can only be exhausted outwards through the communication hole, the gas flow is constant, and the gas flow is uniform. Therefore, it is guaranteed that the minimum flame of the pilot flame adjusted each time is the same each time, it is guaranteed that the flame can trigger a thermocouple on the pilot flame assembly, and the gas valve conveys gas continuously.

Description

Technical Field

[0001] The utility model relates to the technical field of valve manufacturing, in particular to a valve which is convenient for adjusting gas flow. Background Art

[0002] The existing gas valve is provided with a screw on the pilot flame gas output channel, which is used to adjust the flow rate of the pilot flame gas output channel and then adjust the flame size of the pilot flame. However, the screw is manually adjusted, so the minimum flame of the pilot flame is different after each adjustment, so that the flame cannot guarantee that it can trigger the thermocouple on the pilot flame assembly every time, resulting in the gas valve being unable to continuously deliver gas, causing the gas furnace to extinguish due to lack of gas after ignition, so that the user can only readjust the screw and ignite again, which reduces the user experience. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a valve that is convenient for adjusting the gas flow.

[0004] According to the first aspect of the present invention, a valve for adjusting gas flow rate comprises a valve body and an adjusting screw, the valve body having a gas channel and a long-fire output channel, the long-fire output channel being connected to the gas channel and the outside of the valve body respectively; the adjusting screw is rotatably mounted on the valve body and extends into the long-fire output channel, the adjusting screw is used to adjust the flow rate of the long-fire output channel, the adjusting screw is provided with a connecting hole at a position corresponding to the long-fire output channel, the two ends of the connecting hole are respectively connected to the air inlet and the air outlet of the long-fire output channel; when the outer side of the adjusting screw is in contact and sealed with the long-fire output channel, the adjusting screw separates the long-fire output channel into a first connecting channel and a second connecting channel, and the first connecting channel can be connected to the second connecting channel through the connecting hole.

[0005] The valve for adjusting the gas flow according to the embodiment of the utility model has at least the following technical effects: by providing an adjusting screw on the output channel of the ever-open flame, driving the adjusting screw to rotate, thereby changing the size of the gap between the adjusting screw and the output channel of the ever-open flame, thereby adjusting the flame size of the ever-open flame; and by providing a connecting hole on the adjusting screw, when the minimum flame of the ever-open flame is required, the adjusting screw is tightened to the tightest, and the side of the adjusting screw is sealed and connected to the output channel of the ever-open flame, and the gas in the output channel of the ever-open flame can only be discharged to the outside through the connecting hole, so that the gas flow is constant, thereby ensuring that the minimum flame of the ever-open flame after each adjustment is the same each time, and ensuring that the flame can trigger the thermocouple on the ever-open flame assembly, so that the gas valve continues to deliver gas.

[0006] According to some embodiments of the utility model, a valve core is further included, the gas channel includes a first mounting hole for mounting the valve core, the valve body has a second mounting hole arranged on the same side as the first mounting hole, and the adjusting screw is installed in the second mounting hole.

[0007] According to some embodiments of the present invention, the axis of the second mounting hole is parallel to the axis of the first mounting hole.

[0008] According to some embodiments of the present invention, the adjusting screw can pass through the first communicating channel and can extend into the second communicating channel to contact and seal therewith.

[0009] According to some embodiments of the present invention, the inlet end of the second connecting channel has a circular arc chamfer, and the end of the adjusting screw close to the second connecting channel has a conical surface for abutting against the circular arc chamfer.

[0010] According to some embodiments of the utility model, the axis of the first connecting channel is parallel to the horizontal plane, the two ends of the first connecting channel are respectively connected to the gas channel and the outside of the valve body, a plug is provided at one end of the first connecting channel connected to the outside of the valve body, and the second connecting channel is located between the two ends of the first connecting channel.

[0011] According to some embodiments of the present invention, the second connecting channel includes a first connecting section and a second connecting section, the axis of the first connecting section is collinear with the axis of the second mounting hole, and there is an angle between the axis of the second connecting section and the axis of the first connecting channel.

[0012] According to some embodiments of the utility model, the connecting hole includes a first hole segment and a second hole segment, the first hole segment passes through the adjusting screw along the radial direction of the adjusting screw, the second hole segment extends along the axial direction of the adjusting screw, one end of the second hole segment is connected to the first hole segment, and the other end of the second hole segment is connected to the second connecting channel.

[0013] According to some embodiments of the utility model, a solenoid valve is further included, and the gas channel also includes a chamber for installing the solenoid valve, the valve body has a gas inlet connected to the chamber and a gas outlet connected to the first mounting hole, the gas outlet and the gas inlet are respectively located at the upper and lower ends of the valve body, and the gas inlet and the gas outlet partially overlap in the upper and lower directions.

[0014] According to some embodiments of the present utility model, the gas inlet has an inclined section inclined toward the solenoid valve, and the gas inlet is connected to the chamber through the inclined section.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the structure of a valve for adjusting gas flow according to an embodiment of the utility model;

[0018] Figure 2 A cross-sectional view of a valve at a certain location for adjusting the gas flow;

[0019] Figure 3 A cross-sectional view of a valve at another location for adjusting the gas flow;

[0020] Figure 4 for Figure 2 The enlarged view of point A in the middle;

[0021] Figure 5 It is a schematic diagram of the structure of the adjusting screw;

[0022] Figure 6 A cross-sectional view of the adjusting screw.

[0023] Figure numerals: valve body 100, first mounting hole 110, second mounting hole 120, gas inlet 130, inclined section 131, gas outlet 140, gas channel 200, chamber 210, long-open flame output channel 300, air inlet 301, air outlet 302, first connecting channel 310, second connecting channel 320, arc chamfer 321, first connecting section 322, second connecting section 323, adjusting screw 400, connecting hole 410, first hole section 411, second hole section 412, conical surface 420, valve core 500, plug 600, solenoid valve 700. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] Reference Figure 1 As shown, the valve for adjusting the gas flow according to the embodiment of the utility model comprises a valve body 100 and an adjusting screw 400. Figure 2 As shown, the valve body 100 has a gas channel 200 and a long-fire output channel 300, and the long-fire output channel 300 is respectively connected with the gas channel 200 and the outside of the valve body 100; the adjusting screw 400 is rotatably mounted on the valve body 100 and extends into the long-fire output channel 300, and the adjusting screw 400 is used to adjust the flow of the long-fire output channel 300, and the adjusting screw 400 is provided with a connecting hole 410 at the position corresponding to the long-fire output channel 300, and the two ends of the connecting hole 410 are respectively connected with the air inlet 301 and the air outlet 302 of the long-fire output channel 300; when the adjusting screw 400 is tightened, the outer side of the adjusting screw 400 is in contact and sealed with the long-fire output channel 300, and the adjusting screw 400 separates the long-fire output channel 300 into a first connecting channel 310 and a second connecting channel 320, and the first connecting channel 310 can be connected with the second connecting channel 320 through the connecting hole 410.

[0029] Specifically, the pilot flame output channel 300 is connected to a burner (not shown) of an external pilot flame assembly, so that the burner can obtain gas for ignition. Figure 2 As shown, a valve core 500 and a solenoid valve 700 are installed in the gas passage 200. Figure 3As shown, the valve body 100 has a gas inlet 130 and a gas outlet 140, the gas outlet 140 is connected to the gas supply end of the burner (not shown in the figure), the solenoid valve 700 is used to block the gas from the gas inlet 130 from entering the valve core 500, the valve core 500 is used to switch the gas path, so that the gas inlet 130 is connected to the gas outlet 140 and / or the long-open flame output channel 300, and one side of the burner is provided with a thermocouple (not shown in the figure), and the solenoid valve 700 is electrically connected to the thermocouple.

[0030] During operation, when the valve core 500 switches to the ignition position, the valve core 500 moves the sealing plug of the solenoid valve 700 so that the gas inlet 130 and the valve core 500 can be connected, so that the gas is delivered to the long-open flame output channel 300 and the gas outlet 140, so that the burner can obtain gas for ignition and ignite the burner head. After ignition, the thermocouple on one side of the burner detects the flame, thereby generating electrical energy to drive the solenoid valve 700 to maintain the state, so that the gas is kept supplied. If the flame is extinguished, the solenoid valve 700 will lose electrical energy, and the solenoid valve 700 will cut off the gas supply again under the action of the reset spring. Figure 2 As shown, when the flow of the pilot flame output channel 300 needs to be adjusted, the adjusting screw 400 is driven to rotate, thereby changing the size of the gap between the adjusting screw 400 and the pilot flame output channel 300, thereby adjusting the flame size of the pilot flame.

[0031] Although the prior art can adjust the flame size of the pilot flame by means of a screw, the minimum flame is adjusted by relying on the user's feeling, which may result in the flame size being different each time. If the flame is small, the flame cannot trigger the thermocouple, causing the solenoid valve 700 to fail to maintain an open state, thereby causing the gas supply to stop and the burner to extinguish. Figure 2 As shown, the utility model provides a connecting hole 410 on the adjusting screw 400. When the minimum flame of the ever-open flame is required, the adjusting screw 400 is tightened to the maximum, so that the side of the adjusting screw 400 is sealed and connected with the ever-open flame output channel 300, and the gas in the ever-open flame output channel 300 can only be discharged to the outside through the connecting hole 410, so that the gas flow is constant, thereby ensuring that the minimum flame of the ever-open flame after each adjustment is the same each time, ensuring that the flame can trigger the thermocouple on the ever-open flame assembly, so that the gas valve can continuously deliver gas.

[0032] In some embodiments of the present invention, Figure 1 , 2As shown, the valve core 500 is also included, the gas channel 200 includes a first mounting hole 110 for mounting the valve core 500, the valve body 100 has a second mounting hole 120 arranged on the same side as the first mounting hole 110, and the adjusting screw 400 is installed in the second mounting hole 120. The adjusting screw 400 and the valve core 500 are designed on the same side, so that when the size of the pilot flame needs to be adjusted, the user can adjust it from the front side of the valve instead of adjusting it from the side of the valve, thereby avoiding the inability to adjust the size of the pilot flame when the side of the valve is closed, and achieving the technical effect of convenient adjustment.

[0033] In a further embodiment of the present invention, Figure 2 As shown, the axis of the second mounting hole 120 is parallel to the axis of the first mounting hole 110 , so that the adjusting screw 400 can be adjusted horizontally, allowing the user to easily adjust the adjusting screw 400 .

[0034] In a further embodiment of the present invention, Figure 2 As shown, the adjusting screw 400 can pass through the first communicating channel 310 and can extend into the second communicating channel 320 to contact and seal with it. That is, when the adjusting screw 400 is tightened, the adjusting screw 400 extends into the second communicating channel 340 and is sealed and connected with the second communicating channel 340, and the gas in the first communicating channel 310 enters the second communicating channel 340 through the communicating hole 410 and is then discharged from the second communicating channel 340.

[0035] In a further embodiment of the present invention, Figure 4 As shown, the inlet end of the second connecting channel 340 has a circular chamfer 321, and the end of the adjusting screw 400 close to the second connecting channel 340 has a conical surface 420 for abutting against the circular chamfer 321. When the adjusting screw 400 is tightened, the conical surface 420 of the adjusting screw 400 abuts against the circular chamfer 321 of the second connecting channel 340 to achieve a sealed connection, thereby ensuring that the gas in the first connecting channel 310 is only discharged from the connecting hole 410, ensuring a constant gas flow rate, and ensuring that the valve body 100 is continuously supplied with gas.

[0036] In a further embodiment of the present invention, Figure 2 As shown, the axis of the first communicating channel 310 is parallel to the horizontal plane, and the two ends of the first communicating channel 310 are respectively connected to the gas channel 200 and the outside of the valve body 100. A plug 600 is provided at one end of the first communicating channel 310 connected to the outside of the valve body 100. The second communicating channel 340 is located between the two ends of the first communicating channel 310. The first communicating channel 310 extends from the outside of the valve body 100 to the gas channel 200 in the left-right direction, which facilitates the drilling of the first communicating channel 310. By providing the plug 600, it is ensured that the gas in the first communicating channel 310 flows to the second communicating channel 340.

[0037] In a further embodiment of the present invention, Figure 2 As shown, the second connecting passage 340 includes a first connecting section 322 and a second connecting section 323. The axis of the first connecting section 322 is colinear with the axis of the second mounting hole 120, so that the first connecting section 322 can be processed together when the second mounting hole 120 is processed, which is convenient for processing. There is an angle between the axis of the second connecting section 323 and the axis of the first connecting passage 310, so that the first connecting section 322 and the second connecting section 323 can be processed separately. Specifically, the second mounting hole 120 and the second connecting section 323 are arranged relative to each other, so that the second connecting section 323 is convenient for connecting to the pipeline of the burner and convenient for processing.

[0038] In a further embodiment of the utility model, the connecting hole 410 includes a first hole section 411 and a second hole section 412, the first hole section 411 penetrates the adjusting screw 400 along the radial direction of the adjusting screw 400, the second hole section 412 extends along the axial direction of the adjusting screw 400, one end of the second hole section 412 is connected to the first hole section 411, and the other end of the second hole section 412 is connected to the second connecting channel 340; the first hole section 411 penetrates the adjusting screw 400 along the radial direction, so that the gas can enter the interior of the first hole section 411 from both ends, and then be discharged from the second hole section 412, so as to facilitate the gas to enter the connecting hole 410 and ensure smooth gas flow.

[0039] In some embodiments of the present invention, Figure 3 As shown, the gas passage 200 also includes a solenoid valve 700, and the gas passage 200 also includes a chamber 210 for installing the solenoid valve 700. The solenoid valve 700 is used to seal the chamber 210 so that the chamber 210 is not connected to the first installation hole 110. The valve core 500 is used to make the sealing plug of the solenoid valve 700 not seal the chamber 210. When igniting, the valve core 500 makes the sealing plug of the solenoid valve 700 open the chamber 210 so that the chamber 210 is connected to the first installation hole 110. When the flame is turned off, the solenoid valve 700 can seal the chamber 210 through the sealing plug; the valve body 1 00 has a gas inlet 130 communicated with the chamber 210 and a gas outlet 140 communicated with the first mounting hole 110, the gas outlet 140 and the gas inlet 130 are respectively located at the upper and lower ends of the valve body 100, and the gas inlet 130 and the gas outlet 140 partially overlap in the up and down directions. Since the installation position of the existing gas valve on the furnace is limited, the utility model makes the gas inlet 130 and the gas outlet 140 close to each other in the front and back directions, so that the gas inlet 130 and the gas outlet 140 can be conveniently connected to other structures.

[0040] In a further embodiment of the utility model, the gas inlet 130 has an inclined section 131 inclined toward the solenoid valve 700, and the gas inlet 130 is connected to the chamber 210 through the inclined section 131. The gas inlet 130 is provided with the inclined section 131 to ensure that the gas inlet 130 and the gas outlet 140 partially overlap in the up and down directions.

[0041] In the description of this specification, the description with reference to the terms "some embodiments" or "it is conceivable that" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A valve for adjusting gas flow, characterized in that: include: A valve body having a gas channel and a pilot flame output channel, wherein the pilot flame output channel is communicated with the gas channel and the outside of the valve body respectively; an adjusting screw rotatably mounted on the valve body and extending into the pilot flame output channel, the adjusting screw being used to adjust the flow rate of the pilot flame output channel, the adjusting screw being provided with a connecting hole at a position corresponding to the pilot flame output channel, the two ends of the connecting hole being respectively connected with the air inlet and the air outlet of the pilot flame output channel; When the outer side of the adjusting screw contacts and seals with the pilot flame output channel, the adjusting screw separates the pilot flame output channel into a first connecting channel and a second connecting channel, and the first connecting channel can be connected with the second connecting channel through the connecting hole.

2. The valve for adjusting gas flow according to claim 1, characterized in that: It also includes a valve core, the gas channel includes a first mounting hole for mounting the valve core, the valve body has a second mounting hole arranged on the same side as the first mounting hole, and the adjusting screw is installed in the second mounting hole.

3. The valve for adjusting gas flow according to claim 2, characterized in that: The axis of the second mounting hole is parallel to the axis of the first mounting hole.

4. The valve for adjusting gas flow according to claim 2, characterized in that: The adjusting screw can pass through the first communicating passage and can extend into the second communicating passage to contact and seal therewith.

5. The valve for adjusting gas flow according to claim 4, characterized in that: The inlet end of the second communication channel has a circular arc chamfer, and the end of the adjusting screw close to the second communication channel has a conical surface for abutting against the circular arc chamfer.

6. The valve for adjusting gas flow according to claim 4, characterized in that: The axis of the first communicating channel is parallel to the horizontal plane, the two ends of the first communicating channel are respectively connected to the gas channel and the outside of the valve body, a plug is provided at one end of the first communicating channel connected to the outside of the valve body, and the second communicating channel is located between the two ends of the first communicating channel.

7. The valve for adjusting gas flow according to claim 4, characterized in that: The second communicating passage comprises a first communicating section and a second communicating section, the axis of the first communicating section is collinear with the axis of the second mounting hole, and an angle is formed between the axis of the second communicating section and the axis of the first communicating passage.

8. The valve for adjusting gas flow according to claim 1 or 4, characterized in that: The connecting hole includes a first hole segment and a second hole segment, the first hole segment passes through the adjusting screw along the radial direction of the adjusting screw, the second hole segment extends along the axial direction of the adjusting screw, one end of the second hole segment is connected to the first hole segment, and the other end of the second hole segment is connected to the second connecting channel.

9. The valve for adjusting gas flow according to claim 2, characterized in that: It also includes a solenoid valve, and the gas channel also includes a chamber for installing the solenoid valve. The valve body has a gas inlet connected to the chamber and a gas outlet connected to the first mounting hole. The gas outlet and the gas inlet are respectively located at the upper and lower ends of the valve body, and the gas inlet and the gas outlet partially overlap in the upper and lower directions.

10. The valve for adjusting gas flow according to claim 9, characterized in that: The gas inlet has an inclined section inclined toward the solenoid valve, and the gas inlet is communicated with the chamber through the inclined section.

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