Flow regulating valve and gas stove

Abstract

The utility model relates to the technical field of gas equipment, in particular to a flow regulating valve and a gas stove. The flow regulating valve comprises a valve body, a first diaphragm, a compensation spring and a mounting seat. The first diaphragm is arranged in the valve body and connected with the valve body, and the first diaphragm can deform relative to the valve body. The compensation spring is located on one side of the first diaphragm, and one end of the compensation spring abuts against the first diaphragm. The installation seat is arranged in the valve body and integrally formed with the valve body, the compensation spring is arranged on the installation seat in a sleeving mode, a first communication hole is formed in the installation seat and used for allowing fluid to flow, and the first diaphragm deforms to adjust the opening degree of the first communication hole. The mounting seat and the valve body are integrally formed, so that the assembly steps are reduced, the production efficiency is improved, the reliability is good, the air tightness of the valve body can be improved, fluid at one end of the first communicating hole is prevented from flowing to the other end through a connecting gap, and the control precision of fluid flow is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas equipment, in particular to a flow regulating valve and a gas stove. Background Art

[0002] The flow regulating valve is an important part of gas equipment. The stability of the internal structure of the flow regulating valve is related to the stability of the gas flow. For example, in a gas stove, the gas flow required when the gas stove is running at low power is small, and it is easy to go out when the gas supply is unstable. In the related art, the internal structure of the flow regulating valve is complex, the assembly is troublesome, and the production efficiency is low. In addition, the connection of some parts in the flow regulating valve is unstable and the air tightness is poor, resulting in leakage between some chambers in the flow regulating valve, resulting in unstable output gas. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the related art. To this end, the utility model proposes a flow control valve, comprising:

[0004] Valve body;

[0005] a first diaphragm, the first diaphragm is disposed in the valve body and connected to the valve body, and the first diaphragm is deformable relative to the valve body;

[0006] A compensation spring, wherein the compensation spring is located on one side of the first diaphragm, and one end of the compensation spring abuts against the first diaphragm;

[0007] A mounting seat is arranged in the valve body and is integrally formed with the valve body. The compensation spring is sleeved on the mounting seat. A first connecting hole is provided on the mounting seat. The first connecting hole is used for fluid flow. The first diaphragm is deformed to adjust the opening of the first connecting hole.

[0008] The flow regulating valve provided according to an embodiment of the utility model further includes a first tray, the first tray is connected to the first diaphragm, the first tray is connected to the compensation spring, and the first tray is suitable for covering the first connecting hole.

[0009] According to the flow regulating valve provided in the embodiment of the utility model, a gathering section is provided on one end of the mounting seat facing the first diaphragm, one end of the first connecting hole is located on the gathering section, an air blocking groove is provided on one side of the first tray facing the mounting seat, and the end of the gathering section is suitable for being embedded in the air blocking groove.

[0010] According to the flow regulating valve provided in the embodiment of the utility model, a partition is constructed on the valve body, the partition and the mounting seat are an integrally formed part, the partition is opposite to the first diaphragm, the mounting seat is located on the side of the partition facing the first diaphragm, and the first connecting hole passes through the mounting seat and the partition.

[0011] The flow control valve provided according to the embodiment of the utility model further includes:

[0012] an adjusting spring, wherein the adjusting spring is located at the other side of the first diaphragm, and one end of the adjusting spring is connected to the first diaphragm;

[0013] An adjusting column is movably connected to the valve body, a connecting head is constructed at one end of the adjusting column, and the connecting head is connected to the other end of the adjusting spring. The adjusting column is used to adjust the deformable range of the first diaphragm.

[0014] According to the flow regulating valve provided in the embodiment of the utility model, the regulating spring is sleeved on the connecting head.

[0015] According to the flow regulating valve provided in the embodiment of the utility model, the regulating column is provided with a limiting step, and the regulating spring abuts against the limiting step.

[0016] According to the flow control valve provided by the embodiment of the utility model, the regulating column is threadedly connected to the valve body.

[0017] According to the flow regulating valve provided in the embodiment of the utility model, the valve body is provided with a mounting channel, one end of the mounting channel is connected to the outside of the valve body, the regulating column is located in the mounting channel, and the regulating column is movable along the mounting channel.

[0018] According to the flow regulating valve provided in the embodiment of the utility model, a protective cover is provided at one end of the installation channel, and the protective cover is sealed and connected to the installation channel.

[0019] The utility model also provides a gas stove, comprising:

[0020] A flow regulating valve, wherein the flow regulating valve is the flow regulating valve as described above;

[0021] A burner is communicated with the flow regulating valve.

[0022] According to the flow regulating valve of the present application, by integrally forming the mounting seat and the valve body, the assembly steps are reduced, the production efficiency is improved, and the air tightness of the valve body can be improved, thereby preventing the fluid at one end of the first connecting hole from flowing to the other end through the connecting gap, thereby improving the control accuracy of the fluid flow and improving the reliability of the flow regulating valve.

[0023] 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

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a front view of the flow control valve provided by the embodiment of the utility model;

[0026] Figure 2 is a cross-sectional view of a flow control valve provided by an embodiment of the utility model;

[0027] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0028] Figure 4 It is a partial structural schematic diagram of a flow control valve provided in an embodiment of the utility model;

[0029] Figure 5 It is a top view of the flow control valve provided in the embodiment of the utility model.

[0030] Reference numerals:

[0031] 100, flow control valve; 101, first chamber; 102, second chamber; 103, third chamber; 104, regulating chamber; 105, upper chamber; 106, middle chamber; 107, lower chamber;

[0032] 110, valve body; 111, partition; 112, installation channel; 113, protective cover; 114, air inlet; 115, air outlet;

[0033] 120, first membrane; 121, first tray; 122, air blocking groove;

[0034] 130, compensation spring; 131, mounting seat; 132, retracting section; 133, first communicating hole;

[0035] 140. Adjustment spring; 141. Adjustment column;

[0036] 150, main regulating assembly; 151, chamber seat; 152, valve core; 153, second diaphragm; 154, main spring; 155, fixed seat;

[0037] 160. output regulating component; 170. cut-off component;

[0038] 200, Venturi tube; 201, air inlet; 202, air outlet; 203, connecting port; 210, connecting pipe; 220, regulating air pipe; 300, fan. DETAILED DESCRIPTION

[0039] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0040] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying 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 limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0041] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0042] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0044] Combine the following Figure 1-Figure 5 Describe the flow control valve of the utility model. It is understandable that the flow control valve is an important component of the gas equipment, through which the flow of the gas input into the gas equipment can be adjusted, and the stability of the internal structure of the flow control valve is related to the stability of the gas flow.

[0045] See also Figure 1 and Figure 2 As shown, the flow control valve 100 according to the embodiment of the present application includes a valve body 110 , a first diaphragm 120 , a compensation spring 130 and a mounting seat 131 .

[0046] Specifically, the first diaphragm 120 is disposed in the valve body 110 and connected to the valve body 110. The first diaphragm 120 is deformable relative to the valve body 110. Figure 4 As shown, the edge of the first diaphragm 120 is connected to the valve body 110, and the first diaphragm 120 can be moved in the up and down directions (such as Figure 4 The compensation spring 130 is located on one side of the first diaphragm 120, and one end of the compensation spring 130 is against the first diaphragm 120. The compensation spring 130 can provide a certain force to resist the deformation of the first diaphragm 120, so that the deformation process of the first diaphragm 120 is smooth, and at the same time, excessive deformation of the first diaphragm 120 is avoided. The mounting seat 131 is arranged in the valve body 110 and is integrally formed with the valve body 110. For example, the mounting seat 131 can be integrally cast with the valve body 110. The compensation spring 130 is sleeved on the mounting seat 131 to fix the compensation spring 130. When the first diaphragm 120 is deformed, the compensation spring 130 is stretched or compressed.

[0047] The mounting seat 131 is provided with a first connecting hole 133, and the first connecting hole 133 is used for fluid flow, and the first diaphragm 120 is deformed to adjust the opening of the first connecting hole 133. Figure 3 As shown, one end of the first connecting hole 133 is opposite to the first diaphragm 120. When the first diaphragm 120 is upward (as shown in FIG. Figure 3When the first diaphragm 120 is deformed in the direction shown in the figure, the first diaphragm 120 is away from the first connecting hole 133, the opening of the first connecting hole 133 increases, and the flow rate of the fluid increases; when the first diaphragm 120 is downward (as shown in the figure), the first diaphragm 120 is away from the first connecting hole 133, the opening of the first connecting hole 133 increases, and the Figure 3 When the first diaphragm 120 is deformed in the direction shown in the figure, the first diaphragm 120 approaches the first communicating hole 133, and the first diaphragm 120 blocks the first communicating hole 133, the opening of the first communicating hole 133 is reduced, and the flow rate of the fluid is reduced. By integrally forming the mounting seat 131 with the valve body 110, on the one hand, the air tightness inside the valve body 110 can be improved, and the fluid at one end of the first communicating hole 133 can be prevented from flowing to the other end through the connecting gap, thereby improving the control accuracy of the fluid flow rate. On the other hand, the assembly steps can be reduced, and the production efficiency can be improved.

[0048] In order to facilitate understanding of the flow control valve 100 of the present application, an embodiment is provided below to illustrate the flow control valve 100 .

[0049] like Figure 2 and Figure 4 As shown, the valve body 110 is provided with an air inlet 114 and an air outlet 115, wherein the fluid flows into the valve body 110 from the air inlet 114 and flows out of the valve body 110 from the air outlet 115, and the valve body 110 is provided with a plurality of chambers inside, including a first chamber 101, a second chamber 102, a third chamber 103 and a regulating chamber 104. The air inlet 114 is in communication with the first chamber 101, the first chamber 101 is in communication with both the second chamber 102 and the third chamber 103, the second chamber 102 is in communication with the third chamber 103, the regulating chamber 104 is in communication with the second chamber 102, and the third chamber 103 is in communication with the air outlet 115. The fluid can flow into the first chamber 101 from the air inlet 114, part of the fluid in the first chamber 101 flows to the second chamber 102, and flows from the second chamber 102 to the third chamber 103 and then flows out from the air outlet 115, and another part of the fluid in the first chamber 101 can flow directly to the third chamber 103 and then flow out from the air outlet 115.

[0050] like Figure 3 As shown, the first diaphragm 120 is located at the connecting point between the second chamber 102 and the regulating chamber 104, and the first diaphragm 120 separates the second chamber 102 and the regulating chamber 104. The first connecting hole 133 is used to connect the first chamber 101 and the second chamber 102. By adjusting the air pressure difference between the regulating chamber 104 and the second chamber 102, the first diaphragm 120 is moved upward or downward, thereby adjusting the opening of the first connecting hole 133. By adjusting the opening of the first connecting hole 133, the flow rate of the fluid flowing from the first chamber 101 into the second chamber 102 is controlled, thereby controlling the flow rate of the fluid at the air outlet 115.

[0051] For example, when the pressure in the regulating chamber 104 is lower than the pressure in the second chamber 102, the first diaphragm 120 moves upward (eg, Figure 4 When the air pressure in the regulating chamber 104 is greater than the air pressure in the second chamber 102, the first diaphragm 120 approaches the first communicating hole 133 and blocks the first communicating hole 133, the opening of the first communicating hole 133 decreases, the fluid flow rate from the first chamber 101 to the second chamber 102 decreases, and the fluid flow rate at the air outlet 115 decreases.

[0052] It is understandable that when the mounting seat 131 and the valve body 110 are manufactured separately, due to differences in manufacturing processes, assembly accuracy, and the influence of service time, there is a gap between the mounting seat 131 and the valve body 110, causing air leakage between the first chamber 101 and the second chamber 102, reducing the airtightness of the first chamber 101 and the second chamber 102, and the fluid flows between the first chamber 101 and the second chamber 102 through the gap, resulting in a decrease in the accuracy of fluid flow control. Therefore, by integrally forming the mounting seat 131 and the valve body 110, the airtightness of the valve body 110 can be improved, the accuracy of flow regulation can be improved, and the reliability of the flow control valve can be improved.

[0053] According to the flow regulating valve 100 of the embodiment of the present application, the mounting seat 131 and the valve body 110 are integrally formed to reduce the number of assembly steps, improve production efficiency, and improve the air tightness of the valve body 110, thereby preventing the fluid at one end of the first connecting hole 133 from flowing to the other end through the connecting gap, thereby improving the control accuracy of the fluid flow and improving the reliability of the flow regulating valve.

[0054] See also Figure 4 As shown, according to some embodiments of the present application, a partition 111 is constructed on the valve body 110, and the partition 111 is located at the connection between the first chamber 101 and the second chamber 102 to separate the first chamber 101 from the second chamber 102. The partition 111 and the mounting seat 131 are an integrally formed part, and the partition 111 and the mounting seat 131 can be integrally cast to improve the airtightness of the first chamber 101 and the second chamber 102. The partition 111 is opposite to the first diaphragm 120, and the mounting seat 131 is provided on the side of the partition 111 facing the first diaphragm 120 to fix the compensation spring 130. The first communication hole 133 runs through the mounting seat 131 and the partition 111 to connect the first chamber 101 and the second chamber 102.

[0055] See also Figure 3As shown, according to some embodiments of the present application, the flow control valve 100 further includes a first tray 121, the first tray 121 is connected to the first diaphragm 120, and the first tray 121 is suitable for shielding the first communication hole 133. In some embodiments, the first diaphragm 120 is annular, the outer ring edge of the first diaphragm 120 is connected to the inner wall of the valve body 110, and the inner ring edge of the first diaphragm 120 is connected to the first tray 121. When the first diaphragm 120 is deformed, the first tray 121 moves with the first diaphragm 120. When the first diaphragm 120 is deformed downward, the first tray 121 approaches the first connecting hole 133, hindering the fluid from flowing out of the first connecting hole 133. When the first tray 121 contacts one end of the first connecting hole 133 and completely blocks one end of the first connecting hole 133, the flow rate of the first connecting hole 133 is zero. When the first diaphragm 120 is deformed upward, the first tray 121 moves away from the first connecting hole 133, and the resistance to the fluid flowing out of one end of the first connecting hole 133 is reduced, and the fluid flow rate is increased. The first tray 121 is connected to the compensation spring 130. For example, a groove may be provided on the first tray 121, and one end of the compensation spring 130 is embedded in the groove. The force of the compensation spring 130 acts on the first tray 121, making the deformation process of the first diaphragm 120 smoother and assisting the first diaphragm 120 to restore its shape.

[0056] See also Figure 3 As shown, according to some embodiments of the present application, a retracted section 132 is provided at one end of the mounting seat 131 facing the first diaphragm 120, one end of the first communication hole 133 is located on the retracted section 132, and a gas blocking groove 122 is provided on one side of the first tray 121 facing the mounting seat 131. The end of the retracted section 132 is suitable for being embedded in the gas blocking groove 122, and the gas blocking groove 122 blocks the fluid flowing out of the first communication hole 133. By moving the first tray 121 close to or away from the retracted section 132, the resistance of the gas blocking groove 122 to the fluid is adjusted, thereby controlling the flow rate of the fluid. Figure 3 As shown, the mounting seat 131 is cylindrical, the bottom end of the mounting seat 131 is connected to the partition 111, and the first connecting hole 133 is in the up and down direction (such as Figure 3 The top of the mounting seat 131 is opposite to the first tray 121, and the gathering section 132 is located at the top of the mounting seat 131. The outer diameter of the gathering section 132 is smaller than the outer diameter of other parts of the mounting seat 131, and smaller than the diameter of the air blocking groove 122. The gathering section 132 can contact the top wall of the air blocking groove 122, thereby completely blocking the first connecting hole 133, and preventing the fluid in the first chamber 101 from flowing from the first connecting hole 133 to the second chamber 102.

[0057] See also Figure 4As shown, according to some embodiments of the present application, the flow control valve 100 further includes a control spring 140 and a control column 141. The control spring 140 is located on the other side of the first diaphragm 120, and the control spring 140 is located in the control chamber 104. One end of the control spring 140 is connected to the first diaphragm 120. The deformation of the first diaphragm 120 drives the control spring 140 to extend or shorten. The elastic force generated by the expansion and contraction of the control spring 140 can resist the deformation of the first diaphragm 120, and the elastic force generated by the control spring 140 can assist the first diaphragm 120 to restore its shape. The control spring 140 can be connected to the first tray 121, and the first tray 121 is connected to the first tray 121. Figure 4 In the example, a protrusion is provided on the side of the first tray 121 facing the adjusting spring 140, and the adjusting spring 140 can be sleeved on the protrusion.

[0058] The adjusting column 141 is movably connected to the valve body 110. In some embodiments, the adjusting column 141 is threadedly connected to the valve body 110, and the relative position between the adjusting column 141 and the valve body 110 can be adjusted by rotating the adjusting column 141. A connector is configured at one end of the adjusting column 141, and the connector is connected to the other end of the adjusting spring 140. The adjusting column 141 is used to adjust the deformable range of the first diaphragm 120. By moving the adjusting column 141 close to the first diaphragm 120 or away from the first diaphragm 120, the retractable range of the adjusting spring 140 is limited, or the adjusting spring 140 has a certain elastic force in the initial state, thereby limiting the deformable range of the first diaphragm 120. Figure 4 As shown, the adjusting column 141 is cylindrical, and a connector is provided at the bottom end of the adjusting column 141, and the adjusting spring 140 is sleeved on the connector, and the diameter of the connector can be slightly larger than the inner diameter of the adjusting spring 140, so that the connector and the adjusting spring 140 are overfitted. A limiting step can also be provided on the adjusting column 141, and the limiting step is located at the root of the connecting head, and the end of the adjusting spring 140 abuts against the limiting step to limit the position.

[0059] See also Figure 4 As shown, according to some embodiments of the present application, the valve body 110 is provided with a mounting channel 112, the mounting channel 112 is communicated with the adjustment chamber 104, one end of the mounting channel 112 is communicated with the outside of the valve body 110, and the adjustment column 141 is located in the mounting channel 112, and the adjustment column 141 is movable along the mounting channel 112. The position of the adjustment column 141 can be adjusted through the mounting channel 112 to adjust the deformable range of the first diaphragm 120. In some embodiments, a protective cover 113 is provided at one end of the mounting channel 112, and the protective cover 113 is sealed and connected to the mounting channel 112 to seal the mounting channel 112 and play a protective role, such as Figure 4 As shown, the protection cover 113 is T-shaped, one end of the protection cover 113 is inserted into the installation channel 112 , and a sealing ring is sandwiched between the protection cover 113 and the installation channel 112 to improve the sealing performance of the flow control valve 100 .

[0060] See also Figure 4 As shown, according to some embodiments of the present application, the flow control valve 100 further includes a main control component 150, which is located at the connection between the first chamber 101 and the third chamber 103, and is used to adjust the fluid flow between the first chamber 101 and the third chamber 103. The main control component 150 includes a chamber seat 151, a valve core 152, a second diaphragm 153 and a main spring 154. The chamber seat 151 and the second diaphragm 153 are both connected to the valve body 110, and the second diaphragm 153 is deformable. The second diaphragm 153 is located on the side of the partition 111 facing the first chamber 101 and above the chamber seat 151 (such as Figure 4 The second diaphragm 153 and the chamber seat 151 divide the first chamber 101 into an upper chamber 105, a middle chamber 106 and a lower chamber 107. The upper chamber 105 is located between the second diaphragm 153 and the partition 111, and the upper chamber 105 is connected to the first connecting hole 133; the middle chamber 106 is directly located between the second diaphragm 153 and the chamber seat 151, and the middle chamber 106 is directly connected to the third chamber 103; the lower chamber 107 is located below the chamber seat 151 (as shown in FIG. Figure 4 The lower chamber 107 is connected to the air inlet 114.

[0061] The chamber seat 151 is provided with a second connecting hole, which connects the middle chamber 106 and the lower chamber 107. The valve core 152 is passed through the second connecting hole, and the valve core 152 is provided with a blocking portion, which is used to adjust the opening of the second connecting hole. One end of the valve core 152 is connected to the second diaphragm 153, and the other end of the valve core 152 is connected to the main spring 154, which is fixedly connected to the valve body 110. The second diaphragm 153 can be moved in the up and down directions (such as Figure 4 The second diaphragm 153 is deformed to drive the valve core 152 to move relative to the connecting hole, so as to adjust the relative position between the blocking portion and the second connecting hole, thereby adjusting the opening of the second connecting hole. The movement of the valve core 152 drives the main spring 154 to extend or shorten, and the main spring 154 can support the valve core 152 and provide a driving force to drive the valve core 152 to reset. Figure 4 As shown, in some embodiments, the main adjustment component 150 also includes a fixed seat 155, which is connected to the valve body 110, and the main spring 154 is connected to the fixed seat 155. The fixed seat 155 can wrap the main spring 154 and the second connecting hole, wherein a plurality of air holes are provided on the fixed seat 155, and the fluid flows into the fixed seat 155 from the air holes, and flows into the middle chamber 106 from the second connecting hole.

[0062] like Figure 4As shown, the blocking portion is conical. When the valve core 152 moves upward, the cross-sectional area of ​​the portion of the blocking portion located in the second connecting hole increases, the opening of the second connecting hole decreases, and the fluid flow in the second connecting hole decreases; when the valve core 152 moves downward, the cross-sectional area of ​​the portion of the blocking portion located in the second connecting hole decreases, the opening of the second connecting hole increases, and the fluid flow in the second connecting hole increases.

[0063] A third connecting hole is also provided on the valve core 152, and the third connecting hole runs through the valve core 152 to connect the upper chamber 105 and the lower chamber 107. Part of the fluid in the lower chamber 107 can flow into the upper chamber 105 through the third connecting hole, and flow into the second chamber 102 through the first connecting hole 133, and finally flow to the third chamber 103 and the air outlet 115; another part of the fluid in the lower chamber 107 can flow into the middle chamber 106 through the second connecting hole, and directly flow into the third chamber 103 from the middle chamber 106, and finally flow out from the air outlet 115.

[0064] The following describes the working process of the flow control valve 100 by taking the flow control valve 100 applied to a gas device as an example. The gas device may be a gas stove or a gas water heater:

[0065] The flow path of the gas in the flow regulating valve 100 includes a first flow path and a second flow path. The positions through which the gas flows in sequence on the first flow path are: the air inlet 114, the lower chamber 107, the third connecting hole, the upper chamber 105, the first connecting hole 133, the second chamber 102, the third chamber 103 and the air outlet 115, and the contribution flow rate of the first flow path to the gas output from the air outlet 115 is Q1; the positions through which the gas flows in sequence on the second flow path are: the air inlet 114, the lower chamber 107, the second connecting hole, the middle chamber 106, the third chamber 103, and the air outlet 115, and the contribution flow rate of the gas output from the second flow path to the gas output from the air outlet 115 is Q2, and the total output flow rate of the air outlet 115 is Q1+Q2.

[0066] When the opening of the first connecting hole 133 and the opening of the second connecting hole are both greater than zero, Q1 and Q2 are both greater than zero, and when the air pressure in the regulating chamber 104 is greater than the air pressure in the second chamber 102, the first diaphragm 120 moves downward (such as Figure 4The first tray 121 is agitated in the direction shown in the figure, and drives the first tray 121 to move in the direction close to the mounting seat 131. The resistance of the first tray 121 to the gas flowing out of the first connecting hole 133 increases, and Q1 decreases. At the same time, due to the decrease in the speed of the gas outflow, the air pressure in the upper chamber 105 increases to be greater than the air pressure in the middle chamber 106, so that the second diaphragm 153 is agitated downward, and the second diaphragm 153 drives the valve core 152 to move downward, the cross-sectional area of ​​the portion of the blocking portion located in the second connecting hole becomes smaller, and the opening of the second connecting hole increases, thereby increasing Q2. Among them, the regulating chamber 104 can be connected to an external fan 300, and the air pressure in the regulating chamber 104 is adjusted by the fan 300.

[0067] On the contrary, when the air pressure in the regulating chamber 104 is lower than the air pressure in the second chamber 102, the first diaphragm 120 moves upward (eg Figure 4 The valve core 152 is moved upward by the second diaphragm 153, and the cross-sectional area of ​​the sealing portion located in the second communicating hole increases, thereby reducing the opening of the second communicating hole and reducing Q2.

[0068] When the air pressure in the regulating chamber 104 is lower than the air pressure in the second chamber 102, and the air pressure difference between the regulating chamber 104 and the second chamber 102 reaches a certain value, the blocking portion of the valve core 152 can completely block the second connecting hole, at which time Q2 is equal to zero, and the total flow of the gas outlet 115 is equal to Q1. In some embodiments, the cross-sectional area of ​​the first connecting hole 133 is smaller than the cross-sectional area of ​​the second connecting hole, the maximum value of Q1 is smaller than the maximum value of Q2, and the minimum flow of the gas output by the flow regulating valve 100 is Q1, so that when the gas device is running at the minimum power, the gas flow can remain stable to avoid flameout.

[0069] See also Figure 2 and Figure 4 As shown, according to some embodiments of the present application, the flow regulating valve 100 also includes an output regulating component 160 and a cut-off component 170, wherein the output regulating component 160 is disposed at the air outlet 115 to regulate the fluid flow at the air outlet 115, and the maximum output flow value of the flow regulating valve 100 can be limited by the output regulating component 160; the cut-off component 170 is disposed at the air inlet 114, and the cut-off component 170 is used to control the on-off of the air inlet 114 and the first chamber 101, and the cut-off component 170 can be an electromagnetic control valve core 152 component.

[0070] According to the gas stove of the embodiment of the present application, it includes a flow regulating valve 100 and a burner. The flow regulating valve 100 is the flow regulating valve 100 as described above, and the burner is connected to the flow regulating valve 100. The gas flows to the burner through the flow regulating valve 100 and burns on the burner. The flow regulating valve 100 is used to adjust the gas flow of the burner. By integrally forming the mounting seat 131 of the flow regulating valve 100 with the valve body 110, the assembly steps are reduced, the production efficiency is improved, and the air tightness of the valve body 110 can be improved, so as to prevent the fluid at one end of the first connecting hole 133 from flowing to the other end through the connecting gap, and improve the control accuracy of the fluid flow, so as to improve the stability of the flame generated by the burner.

[0071] See also Figure 2 and Figure 5 As shown, the gas stove further includes a venturi tube 200 and a fan 300, wherein the venturi tube 200 is connected and communicated with the flow regulating valve 100, the fan 300 is connected and communicated with the venturi tube 200, the venturi tube 200 is connected and communicated with the burner, and the fan 300 can adjust the flow rate of the gas in the venturi tube 200, and mix the gas output by the flow regulating valve 100 with the air to improve the gas combustion efficiency. Specifically, one end of the venturi tube 200 is provided with an air inlet 201, and the other end is provided with an outlet 202, and the fan 300 can be communicated with the air inlet 201, or the fan 300 can be communicated with the outlet 202. A connecting port 203 is provided on the peripheral wall of the venturi tube 200 , and the air inlet 201 , the outlet 202 and the connecting port 203 are interconnected. The connecting port 203 is connected and communicated with the air outlet 115 of the flow regulating valve 100 . For example, the connecting port 203 and the air outlet 115 can be connected via a connecting pipe 210 .

[0072] When the fan 300 is started, the fluid flow rate in the venturi tube 200 increases, the gas flow rate in the third chamber 103 increases, and the gas flow rate in the second chamber 102 directly connected to the third chamber 103 increases, so that the air pressure in the second chamber 102 decreases, so that the first diaphragm 120 moves downward (such as Figure 4 The first diaphragm 120 drives the first tray 121 to move downward, the opening of the first connecting hole 133 decreases, Q1 decreases, and the air pressure in the upper chamber 105 increases. The air pressure difference between the upper chamber 105 and the middle chamber 106 changes, and the second diaphragm 153 drives the valve core 152 to move downward. The cross-sectional area of ​​the portion of the blocking portion located in the second connecting hole becomes smaller, thereby increasing the opening of the second connecting hole, Q2 increases, and the cross-sectional area of ​​the second connecting hole is greater than that of the first connecting hole 133. Therefore, the flow rate of the gas output by the flow control valve 100 can be increased by driving the fan 300. Figure 2 and Figure 4As shown, in some embodiments, the fan 300 is connected and communicated with the air duct 201. At the air duct 201, the venturi tube 200 and the regulating chamber 104 are connected through the regulating air pipe 220, so that the air pressure in the regulating chamber 104 can be directly adjusted to adjust the flow of the flow regulating valve 100.

[0073] Finally, it should be noted that the above implementation modes are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention is described in detail with reference to the embodiments, a person skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present invention do not deviate from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the present invention.

Claims

1. A flow control valve, characterized in that: include: Valve body; a first diaphragm, the first diaphragm is disposed in the valve body and connected to the valve body, and the first diaphragm is deformable relative to the valve body; A compensation spring, wherein the compensation spring is located on one side of the first diaphragm, and one end of the compensation spring abuts against the first diaphragm; A mounting seat is arranged in the valve body and is integrally formed with the valve body. The compensation spring is sleeved on the mounting seat. A first connecting hole is provided on the mounting seat. The first connecting hole is used for fluid flow. The first diaphragm is deformed to adjust the opening of the first connecting hole.

2. The flow control valve according to claim 1, characterized in that: It also includes a first tray, the first tray is connected to the first diaphragm, the first tray is connected to the compensation spring, and the first tray is suitable for covering the first connecting hole.

3. The flow control valve according to claim 2, characterized in that: The mounting seat has one end facing the first diaphragm with a gathering section, one end of the first connecting hole is located on the gathering section, the first tray has one side facing the mounting seat with an air blocking groove, and the end of the gathering section is suitable for being embedded in the air blocking groove.

4. The flow control valve according to claim 1, characterized in that: A partition is constructed on the valve body, the partition and the mounting seat are an integrally formed part, the partition is opposite to the first diaphragm, the mounting seat is located on the side of the partition facing the first diaphragm, and the first connecting hole runs through the mounting seat and the partition.

5. The flow control valve according to claim 1, characterized in that: Also includes: an adjusting spring, wherein the adjusting spring is located at the other side of the first diaphragm, and one end of the adjusting spring is connected to the first diaphragm; An adjusting column is movably connected to the valve body, a connecting head is constructed at one end of the adjusting column, and the connecting head is connected to the other end of the adjusting spring. The adjusting column is used to adjust the deformable range of the first diaphragm.

6. The flow control valve according to claim 5, characterized in that: The adjusting spring is sleeved on the connecting head.

7. The flow control valve according to claim 5, characterized in that: The adjusting column is provided with a limiting step, and the adjusting spring abuts against the limiting step.

8. The flow control valve according to claim 5, characterized in that: The adjusting column is threadedly connected to the valve body.

9. The flow control valve according to claim 5, characterized in that: The valve body is provided with a mounting channel, one end of which is communicated with the outside of the valve body, the adjusting column is located in the mounting channel, and the adjusting column is movable along the mounting channel.

10. The flow control valve according to claim 9, characterized in that: A protective cover is provided at one end of the installation channel, and the protective cover is sealed and connected to the installation channel.

11. A gas stove, characterized in that: include: A flow regulating valve, wherein the flow regulating valve is the flow regulating valve according to any one of claims 1 to 10; A burner is communicated with the flow regulating valve.

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