Valve body of proportional valve, proportional valve and gas device

Abstract

The application discloses a valve body of a proportional valve, the proportional valve with the valve body and a gas device with the proportional valve, the valve body has a valve cavity, a first interface and a second interface, the first interface is arranged on a peripheral wall of the valve body, the second interface is arranged at one end of the valve body, the first interface and the second interface are communicated through the valve cavity, the first interface comprises a first section and a second section, the first section is communicated with the second section, the second section is communicated with the valve cavity, the second section is closer to the valve cavity than the first section, and the second section is offset relative to the first section in a direction away from the second interface. According to the valve body of the proportional valve in the embodiment of the application, the volume of the proportional valve can be reduced, so that the arrangement space in the gas device can be saved.

Description

Technical Field

[0001] This invention relates to the field of gas equipment technology, and more particularly to a proportional valve body, a proportional valve, and a gas equipment. Background Technology

[0002] A proportional valve is a type of valve that can automatically adjust and control the on / off state of gas and precisely control the gas flow rate. Its working principle is as follows: gas enters the proportional valve chamber through the inlet. After receiving a signal, the proportional valve opens the ball valve. At this time, the gas enters the main chamber through the ball valve. The main chamber is directly connected to the inner ring. Therefore, when the ball valve is opened, there is gas in the inner ring. A shut-off valve is installed between the outlet of the outer ring and the middle ring and the main chamber for on / off control.

[0003] Currently, proportional valves on the market are large in size, thick in thickness, complex in structure, have poor overall assembly efficiency, and low degree of modularization. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in the related art. Therefore, one object of this invention is to provide a proportional valve body that can reduce the volume of the proportional valve, thereby saving layout space within gas equipment.

[0005] Another object of the present invention is to provide a proportional valve, the proportional valve comprising the aforementioned valve body.

[0006] Another object of the present invention is to provide a gas appliance comprising the aforementioned proportional valve.

[0007] According to an embodiment of the present invention, the valve body of the proportional valve has a valve cavity, a first interface and a second interface. The first interface is disposed on the peripheral wall of the valve body and the second interface is disposed at one end of the valve body. The first interface and the second interface can communicate through the valve cavity. The first interface includes a first segment and a second segment. The first segment communicates with the second segment and the second segment communicates with the valve cavity. The second segment is closer to the valve cavity than the first segment and is offset away from the second interface relative to the first segment.

[0008] According to the valve body of the proportional valve in the embodiment of the present invention, the volume of the proportional valve can be reduced, thereby saving the arrangement space in the gas equipment.

[0009] In addition, the valve body of the proportional valve according to the above embodiments of the present invention may also have the following additional technical features:

[0010] Optionally, the axis of the second segment is offset away from the axis of the first segment in a direction away from the second interface.

[0011] Optionally, the inner peripheral surface of the first interface further includes a first stepped surface, which connects the inner peripheral surface of the first segment and the inner peripheral surface of the second segment. A groove is provided on the first stepped surface, the opening of which is opposite to the first segment and communicates with the second segment.

[0012] Optionally, the inner circumferential surface of the settling trough is connected to the inner circumferential surface of the second section, and the inner bottom surface of the settling trough is lower than the first step surface, so that the settling trough is connected to the second section.

[0013] Optionally, in the projection along the axis of the first segment, the second segment falls within the coverage area of ​​the first segment.

[0014] Optionally, the axis of the first segment and the axis of the second segment are parallel to each other.

[0015] Optionally, the valve body includes a valve body, a first cover, and a second cover. The valve body has a valve cavity formed inside and is open at both ends. The first interface is located on the peripheral wall of the valve body. The first cover is connected to one end of the valve body. The second interface is located on the first cover and the second cover is connected to the other end of the valve body.

[0016] Optionally, the second cover is provided with vent holes.

[0017] Optionally, the axis of the first segment, the axis of the second segment, and the axis of the second interface are located on the same plane.

[0018] Optionally, the axis of the first segment and the axis of the second segment are collinear, and the dimension of the valve body along the thickness direction is less than or equal to 18 mm, wherein the thickness direction is perpendicular to the axis of the first segment, the axis of the second segment, and the axis of the second interface.

[0019] According to an embodiment of the present invention, a proportional valve includes a valve body, a sealing gasket, and a drive assembly as described in the above embodiments. The sealing gasket is disposed within the valve body and is movable to change the opening degree between the first interface and the second interface. The drive assembly is connected to the sealing gasket to drive the sealing gasket to move.

[0020] Optionally, the inner circumferential surface of the valve body includes a second stepped surface, which extends circumferentially along the valve body and faces the second interface. The second stepped surface is located on the side of the first interface closer to the second interface. The sealing gasket is adapted to move between the second stepped surface and the second interface to adjust the opening between the first interface and the second interface.

[0021] Optionally, the drive assembly includes an electromagnetic drive, a diaphragm, and a magnetic component. The electromagnetic drive is connected to the other end of the valve body. The diaphragm is connected to the valve body and closes the other end of the valve body. The first interface and the second interface are located on the same side of the diaphragm. The magnetic component is connected to the sealing gasket and is adapted to drive the sealing gasket to move under the driving action of the electromagnetic drive.

[0022] Optionally, the drive assembly further includes a first seat and a second seat, the first seat being connected to the sealing gasket, the second seat being inserted into the first seat through the diaphragm, and the second seat and the first seat cooperating to clamp and fix the diaphragm.

[0023] Optionally, the magnetic component is sleeved on the second base and clamped and fixed by the first base and the second base.

[0024] Optionally, the axis of the electromagnetic drive extends along the axial direction of the valve body and is disposed opposite to the second interface.

[0025] Optionally, the proportional valve further includes a first connector and a second connector, wherein the first connector is inserted into the first segment of the first interface, and the second connector is inserted into the second interface.

[0026] Optionally, at least one of the first and second connectors includes a tube body and a first flange, the first flange protruding from the outer peripheral surface of the tube body for positioning the sealing ring.

[0027] Optionally, the connector further includes a second flange opposite to the first flange, the first flange and the second flange cooperating to form an annular groove for accommodating a sealing ring, wherein the surface of the second flange away from the first flange is configured as a guide slope whose bulge height gradually decreases relative to the outer peripheral surface of the tube body in a direction away from the first flange.

[0028] Optionally, the connector is integrally formed.

[0029] According to an embodiment of the present invention, a gas device includes a proportional valve as described in the above embodiment. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a proportional valve in some embodiments of the present invention.

[0031] Figure 2 This is a cross-sectional view of a proportional valve in some embodiments of the present invention.

[0032] Figure 3 This is a cross-sectional view of the valve body in some embodiments of the present invention.

[0033] Figure 4 This is a schematic diagram of the valve body in some embodiments of the present invention.

[0034] Figure 5 This is a schematic diagram of the first cover in some embodiments of the present invention.

[0035] Figure 6 This is a schematic diagram of the second cover in some embodiments of the present invention.

[0036] Figure 7 This is a schematic diagram of the installation of the proportional valve in some embodiments of the present invention.

[0037] Figure label:

[0038] Proportional valve 1000, valve body 100, valve chamber 10, first interface 20, first section 21, second section 22, settling groove 23, second interface 30, valve body 40, first cover 50, second cover 60, vent hole 61, first stepped surface 70, second stepped surface 80, sealing gasket 200, electromagnetic drive component 310, diaphragm 320, magnetic component 330, first seat 340, second seat 350, first connecting pipe 400, second connecting pipe 500, first flange 600, second flange 700, sealing ring 800. Detailed Implementation

[0039] The present invention proposes a valve body 100 of a proportional valve 1000, a proportional valve 1000 having the valve body 100, and a gas equipment having the proportional valve 1000, which can reduce the volume of the proportional valve 1000, thereby saving the arrangement space in the gas equipment.

[0040] 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.

[0041] like Figures 1 to 7As shown, the proportional valve 100 of the embodiment of the present invention has a valve body 100, a valve cavity 10, a first interface 20 and a second interface 30. The first interface 20 is disposed on the peripheral wall of the valve body 100, and the second interface 30 is disposed at one end of the valve body 100. The first interface 20 and the second interface 30 can be connected through the valve cavity 10. The first interface 20 includes a first segment 21 and a second segment 22. The first segment 21 can be connected to the second segment 22, and the second segment 22 can be connected to the valve cavity 10. The second segment 22 is closer to the valve cavity 10 than the first segment 21, and the second segment 22 is offset away from the second interface 30 relative to the first segment 21, thereby reducing the volume of the proportional valve 1000 and saving the internal layout space of the gas equipment.

[0042] In this design, the first port 20 can be used for air intake, and the second port 30 can be used for air exhaust. That is, gas enters the valve body 100 through the first port 20, passes through the valve chamber 10, and exits through the second port 30. Of course, the airflow direction can be reversed; in other words, the first port 20 can also be configured for air exhaust, and the second port 30 for air intake. For simplicity, unless otherwise specified, the following description primarily uses the first port 20 for air intake and the second port 30 for air exhaust as an example.

[0043] In addition, the first interface 20 includes a first segment 21 and a second segment 22, and the second segment 22 is closer to the valve cavity 10 than the first segment 21. In other words, when air is introduced through the first interface 20, the gas flows through the first segment 21 and the second segment 22 in sequence before entering the valve cavity 10.

[0044] Specifically, a sealing gasket 200 can be provided inside the valve body 100. The sealing gasket 200 has a certain amount of room to move within the valve cavity 10, allowing it to move and change the opening between the first interface 20 and the second interface 30. Normally, the sealing gasket 200 is positioned between the first interface 20 and the second interface 30, and the opening is adjusted by moving the sealing gasket 200. In this invention, the second segment 22 is offset relative to the first segment 21 in a direction away from the second interface 30, causing the room to move with the second segment 22. This makes the internal structure of the valve cavity 10 more compact, reducing the volume of the valve body 100 while increasing its integration and saving internal space in the gas equipment.

[0045] Therefore, according to the embodiment of the present invention, the valve body 100 of the proportional valve 1000 can reduce the volume of the proportional valve 1000, thereby saving the arrangement space in the gas equipment.

[0046] In order to achieve the offset of the second segment 22 relative to the first segment 21, the axes of the second segment 22 and the first segment 21 can be tilted or misaligned. In this invention, the offset of the axes of the second segment 22 and the first segment 21 is mainly used to achieve the offset of the second segment 22 relative to the first segment 21, but this is not a limitation on the scope of protection of this invention.

[0047] like Figure 2 and Figure 3 As shown, in some embodiments of the present invention, the axis of the second segment 22 can be offset away from the axis of the first segment 21 in a direction away from the second interface 30, so that the active space of the sealing gasket 200 can be offset with the offset of the axis of the second segment 22, thereby reducing the volume of the valve body 100, making the internal structure of the valve cavity 10 more compact, improving the integration of the valve body 100, and thus saving the internal layout space of the gas equipment.

[0048] In some embodiments of the present invention, the inner peripheral surface of the first interface 20 further includes a first stepped surface 70, which connects the inner peripheral surfaces of the first segment 21 and the second segment 22. For example, since the axis of the second segment 22 is offset relative to the axis of the first segment 21, the aforementioned first stepped surface 70 can be formed. A groove 23 can be provided on the first stepped surface 70. The opening of the groove 23 can be opposite to the first segment 21, and the groove 23 can communicate with the second segment 22, so as to ensure that the gas flow rate entering the valve chamber 10 reaches a predetermined value when the second segment 22 is offset away from the first segment 21 in a direction away from the second interface 30.

[0049] Specifically, there is an offset between the second segment 22 and the first segment 21, which will obstruct the flow of fluid through the first interface 20, for example, as Figure 2 As shown, when the airflow enters the second section 22 from the first section 21, a portion of the lower end of the first section 21 is blocked by the first stepped surface 70, resulting in increased flow resistance. Therefore, by providing a settling tank 23 connected to the second section 22, the flow resistance can be effectively reduced in this invention.

[0050] Specifically, a settling groove 23 can be provided on the first step surface 70, and multiple settling grooves 23 can be provided. Multiple settling grooves 23 can be connected to the second section 22. The settling grooves 23 can be connected to the second section 22 by providing multiple channels, or multiple through holes can be provided. Therefore, when gas flows from the first section 21 to the second section 22, some gas can enter the second section 22 through the settling grooves 23, ensuring that the gas flow rate entering the valve chamber 10 can reach the predetermined value.

[0051] like Figure 2 and Figure 3As shown, in some embodiments of the present invention, the inner circumferential surface of the settling groove 23 can be connected to the inner circumferential surface of the second segment 22, and the inner bottom surface of the settling groove 23 is lower than the first step surface 70, so that the settling groove 23 can communicate with the second segment 22. Alternatively, an opening communicating with the first segment 21 is constructed on the circumferential surface of the settling groove 23. This ensures that the flow area for gas entering the second segment 22 is a predetermined value, so that the gas flow rate entering the valve chamber 10 meets the usage requirements.

[0052] like Figure 2 and Figure 3 As shown, in some embodiments of the present invention, in the projection along the axis of the first segment 21, the second segment 22 falls within the coverage area of ​​the first segment 21, which can ensure that the offset range of the second segment 22 does not exceed the projection along the axis of the first segment 21, thereby reducing the projection of the valve body 100 along the axis of the first segment 21, and thus reducing the design size of the proportional valve 1000.

[0053] In the first interface 20, the size of the first segment 21 is larger than the size of the second segment 22. Therefore, when the axis of the second segment 22 is offset away from the axis of the first segment 21 from the second interface 30, the projection of the second segment 22 can fall into the projection of the first segment 21 in the projection along the axis of the first segment 21. This reduces the projected area of ​​the valve body 100 along the axis of the first segment 21, thereby reducing the volume of the proportional valve 1000 and saving the internal layout space of the gas equipment.

[0054] like Figure 2 and Figure 3 As shown, in some embodiments of the present invention, the axis of the first segment 21 and the axis of the second segment 22 are parallel to each other. That is, in the first interface 20, the first segment 21 and the second segment 22 extend in the same direction, which facilitates the manufacturing and processing of the proportional valve 1000. The axis of the first segment 21 may have an angle of less than 90° with the peripheral wall of the valve body 100, or the axis of the first segment 21 may be perpendicular to the peripheral wall of the valve body 100.

[0055] like Figure 2 and Figure 3 As shown, in conjunction with the aforementioned embodiments, in the projection along the axis of the first segment 21, the second segment 22 falls within the coverage area of ​​the first segment 21, and the axes of the first segment 21 and the second segment 22 are parallel to each other, which facilitates the processing of the valve body 100. That is, during the processing of the valve body 100, the feed direction of the processing tools of the first segment 21 and the second segment 22 is consistent, and they can be processed in the order of the second segment 22 and the first segment 21, which facilitates the retraction of the processing tools.

[0056] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments of the present invention, the valve body 100 includes a valve body 40, a first cover 50, and a second cover 60. A valve cavity 10 is formed inside the valve body 40, and both ends of the valve body 40 are open. A first interface 20 is disposed on the peripheral wall of the valve body 40. The first cover 50 is connected to one end of the valve body 40, a second interface 30 is disposed on the first cover 50, and the second cover 60 is connected to the other end of the valve body 40, which facilitates the processing and assembly of the valve body 100.

[0057] In addition, a sealing element can be provided on the valve body 40 to improve the sealing performance of the valve body 100 and ensure that the proportional valve 1000 can operate normally. For example, the first cover 50 is connected to one end of the valve body 40, and a sealing element can be provided between the first cover 50 and the valve body 40 to improve the sealing performance of the valve body 100. Similarly, the second cover 60 is connected to the other end of the valve body 40, and a sealing element can be provided between the second cover 60 and the valve body 40 to improve the sealing performance of the valve body 100.

[0058] like Figure 6 As shown, in some embodiments of the present invention, a vent hole 61 is provided on the second cover 60, which can maintain the internal and external pressure balance on both sides of the second cover 60. Specifically, a diaphragm 320 can be provided on the inner side of the second cover 60, which can be used to seal the inner side of the second cover 60. The diaphragm 320 can also be used to connect and position the sealing gasket 200 (the sealing gasket 200 is used to adjust the opening). Since the sealing gasket 200 needs to move to adjust the opening, the diaphragm 320 also needs to move with the sealing gasket 200. The air pressure between the diaphragm 320 and the second cover 60 will change. Therefore, by providing a vent hole 61 on the second cover 60, the movement of the diaphragm 320 can be facilitated.

[0059] like Figure 1 , Figure 2 , Figure 4 and Figure 7 As shown, in some embodiments of the present invention, the axis of the first segment 21, the axis of the second segment 22, and the axis of the second interface 30 are located on the same plane, or the axis of the first segment 21 and the axis of the second segment 22 are collinear, and the dimension of the valve body 100 along the thickness direction is less than or equal to 18 mm, and the thickness direction is perpendicular to the axis of the first segment 21, the axis of the second segment 22, and the axis of the second interface 30, which can reduce the volume of the proportional valve 1000, thereby saving the internal layout space of the gas equipment.

[0060] Among them, such as Figure 4 As shown, the dimension of the valve body 100 along the thickness direction can be H.

[0061] Specifically, the axis of the first segment 21, the axis of the second segment 22, and the axis of the second interface 30 are located on the same plane. That is to say, when the second segment 22 is offset away from the second interface 30 relative to the first segment 21, the dimension of the valve body 100 in the thickness direction remains unchanged. At the same time, with the offset of the second segment 22, the moving space of the sealing gasket 200 inside the valve body 100 is also offset, which can reduce the volume of the valve body 100, thereby reducing the volume of the proportional valve 1000 and saving the internal layout space of the gas equipment.

[0062] In addition, the axis of the first segment 21 and the axis of the second segment 22 are collinear. In other words, the axis of the first segment 21 and the axis of the second segment 22 coincide and / or are parallel. When the second segment 22 is offset relative to the first segment 21 in a direction away from the second interface 30, the dimension of the valve body 100 in the thickness direction is less than or equal to 18 mm (for example, the thickness of the valve body 100 can be 15 mm, 16 mm, etc.), thereby reducing the volume of the proportional valve 1000.

[0063] Of course, the dimension of the valve body 100 along the thickness direction can be greater than 18 mm and less than 38 mm, or greater than 38 mm, which is not a limitation on the scope of protection of this invention.

[0064] like Figure 2 As shown, a proportional valve 1000 according to an embodiment of the present invention includes a valve body 100, a sealing gasket 200 and a drive assembly as described in any of the above embodiments. The sealing gasket 200 is disposed within the valve body 100 and is movable to change the opening degree between the first interface 20 and the second interface 30. The drive assembly is connected to the sealing gasket 200 to drive the sealing gasket 200 to move, thereby controlling the flow rate of gas passing through the proportional valve 1000.

[0065] Specifically, when gas enters the valve body 100 from the first port 20, the drive assembly can drive the sealing gasket 200 to move, so that the first port 20 and the second port 30 are connected. Gas can then enter the valve body 100 from the first port 20, pass through the valve cavity 10, and leave the valve body 100 from the second port 30. During this process, the sealing gasket 200 is disposed inside the valve body 100 and can move within a certain range, thereby changing the opening between the first port 20 and the second port 30, and thus changing the flow rate of gas through the proportional valve 1000.

[0066] Furthermore, when the second segment 22 is offset away from the second interface 30 relative to the first segment 21, since the second segment 22 can communicate with the valve cavity 10, the range of movement of the sealing gasket 200 is also offset with the offset of the second segment 22. In the projection of the axis of the first segment 21, when the projection plane of the first segment 21 is tangent to the projection plane of the second segment 22, the projection area of ​​the valve body 100 along the axis of the first segment 21 can be minimized, thereby reducing the volume of the proportional valve 1000.

[0067] like Figure 2 and Figure 3 As shown, in some embodiments of the present invention, the inner circumferential surface of the valve body 100 includes a second stepped surface 80. The second stepped surface 80 can extend circumferentially along the valve body 100 and face the second interface 30. The second stepped surface 80 is disposed on the side of the first interface 20 close to the second interface 30. The sealing gasket 200 is adapted to move between the second stepped surface 80 and the second interface 30 to adjust the opening between the first interface 20 and the second interface 30. It can provide a certain amount of space for the movement of the sealing gasket 200. The second stepped surface 80 can abut against the sealing gasket 200 to disconnect the first interface 20 and the second interface 30.

[0068] Specifically, under normal conditions, the sealing gasket 200 can abut against the second step surface 80 to disconnect the first interface 20 and the second interface 30, at which point gas cannot pass through the proportional valve 1000. When the drive assembly is working, it can drive the sealing gasket 200 to move away from the second step surface 80 to connect the first interface 20 and the second interface 30, allowing gas to pass through the proportional valve 1000.

[0069] Additionally, the sealing gasket 200 can move between the second step surface 80 and the second interface 30 to adjust the opening between the first interface 20 and the second interface 30, such as... Figure 2 As shown, when the second step surface 80 can be offset with the offset of the second segment 22, and the active space of the sealing gasket 200 remains unchanged, the active space also offsets with the offset of the second segment 22. When the projection of the second segment 22 is inscribed in the projection of the first segment 21 along the axis of the first segment 21, the projected area of ​​the valve body 100 along the axis of the first segment 21 can be minimized. Therefore, the volume of the proportional valve 1000 can be reduced, and the proportional valve 1000 can be made thinner and lighter.

[0070] like Figure 2As shown, in some embodiments of the present invention, the driving assembly includes an electromagnetic drive 310, a diaphragm 320, and a magnetic component 330. The electromagnetic drive 310 is connected to the other end of the valve body 100. The diaphragm 320 can be connected to the valve body 100 and close the other end of the valve body 100. The first interface 20 and the second interface 30 are disposed on the same side of the diaphragm 320. The magnetic component 330 can be connected to the sealing gasket 200, and the magnetic component 330 is adapted to drive the sealing gasket 200 to move under the driving action of the electromagnetic drive 310, so as to achieve precise control of the opening degree between the first interface 20 and the second interface 30.

[0071] The connection between the electromagnetic drive component 310 and the valve body 100 can be a threaded connection, etc.

[0072] Specifically, when the electromagnetic drive 310 is in operation, it can drive the magnetic component 330 to move within the valve body 100, thereby indirectly driving the sealing gasket 200 to move within the valve body 100. This changes the opening between the first port 20 and the second port 30, allowing gas to pass through the proportional valve 1000. When the electromagnetic drive 310 is not in operation, the sealing gasket 200 can separate the valve chamber 10, disconnecting the first port 20 and the second port 30. In this case, gas cannot pass through the proportional valve 1000.

[0073] In addition, the magnitude of the magnetic force generated by the electromagnetic drive 310 can cause the magnetic component 330 to be subjected to different forces, thereby changing the opening degree between the first interface 20 and the second interface 30, and achieving precise control of the opening degree.

[0074] Of course, depending on the actual situation, the electromagnetic drive component 310 can generate an attractive force, which can attract the magnetic component 330 to change the opening degree of the valve body 100. The electromagnetic drive component 310 can also generate a repulsive force, which can repel the magnetic component 330 to change the opening degree of the valve body 100.

[0075] Secondly, in conjunction with the aforementioned embodiments, such as Figure 2 As shown, the second cover 60 is connected to the other end of the valve body 40. The second cover 60 is provided with a vent hole 61, and the diaphragm 320 is connected to the valve body 100 and seals the other end of the valve body 100. Therefore, through the combined action of the diaphragm 320 and the vent hole 61, the valve body 100 can be kept in a sealed position while maintaining the pressure balance inside and outside the valve body 100.

[0076] like Figure 2As shown, in some embodiments of the present invention, the drive assembly further includes a first seat 340 and a second seat 350. The first seat 340 is connected to the sealing gasket 200, and the second seat 350 is inserted into the first seat 340 through the diaphragm 320. The second seat 350 and the first seat 340 cooperate to clamp and fix the diaphragm 320, so that the first interface 20 and the second interface 30 are kept in the disconnected state.

[0077] Specifically, the diaphragm 320 is indirectly connected to the sealing gasket 200 through the first seat 340 and the second seat 350, and the diaphragm 320 can be connected to the valve body 100. When the electromagnetic drive 310 is not in operation, the diaphragm 320 has a certain elasticity, which can keep the sealing gasket 200 and the second step surface 80 in a mutually abutting state, thereby disconnecting the first interface 20 and the second interface 30.

[0078] In addition, when the electromagnetic drive 310 finishes working, the elasticity of the diaphragm 320 allows the sealing gasket 200 to abut against the second step surface 80 again, thereby disconnecting the first interface 20 and the second interface 30.

[0079] Of course, depending on the actual needs, the second seat 350 can also be configured to pass through the diaphragm 320 and be inserted into the outside of the first seat 340.

[0080] like Figure 2 As shown, in some embodiments of the present invention, the magnetic element 330 is sleeved on the second seat 350 and clamped and fixed by the first seat 340 and the second seat 350, which can improve the connection stability between the sealing gasket 200 and the magnetic element 330.

[0081] Specifically, when the electromagnetic drive 310 is working, it can drive the magnetic component 330 to move within the valve body 100. Since the magnetic component 330 is sleeved on the second seat 350 and clamped and fixed by the first seat 340 and the second seat, the electromagnetic drive 310 can indirectly drive the sealing gasket 200 to move within the valve body 100 to change the opening between the first interface 20 and the second interface 30, thereby allowing airflow to pass through the proportional valve 1000.

[0082] In addition, the magnetic component 330 and the sealing gasket 200 are stably connected through the first seat 340 and the second seat 350, which can improve the stability of force transmission between the magnetic component 330 and the sealing gasket 200 and ensure the control of the valve body 100 opening degree.

[0083] like Figure 2 As shown, in some embodiments of the present invention, the axis of the electromagnetic drive 310 extends along the axial direction of the valve body 100 and is disposed opposite to the second interface 30, which can ensure the stability of the operation of the proportional valve 1000.

[0084] The axis of the electromagnetic drive 310 extends along the axial direction of the valve body 100. That is, the direction of the magnetic force generated by the electromagnetic drive 310 is the axial direction of the valve body 100. Therefore, when the electromagnetic drive 310 drives the magnetic component 330, the magnetic component 330 can move along the axial direction of the valve body 100 to indirectly drive the sealing gasket 200 to control the opening degree of the valve body 100 and ensure the stability of the proportional valve 1000 operation.

[0085] like Figure 1 , Figure 2 and Figure 7 As shown, in some embodiments of the present invention, the proportional valve 1000 further includes a first connecting pipe 400 and a second connecting pipe 500. The first connecting pipe 400 is inserted into the first segment 21 of the first interface 20, and the second connecting pipe 500 is inserted into the second interface 30. In conjunction with the foregoing embodiments, when the first connecting pipe 400 is inserted into the first segment 21 of the first interface 20, the first stepped surface 70 can abut against the first connecting pipe 400, allowing the first connecting pipe 400 to extend a predetermined length, ensuring that the flow rate through the proportional valve 1000 is not lower than a predetermined value.

[0086] like Figure 2 As shown, in some embodiments of the present invention, at least one of the first connecting pipe 400 and the second connecting pipe 500 includes a pipe body and a first flange 600. The first flange 600 protrudes from the outer peripheral surface of the pipe body and is used to position the sealing ring 800, which can ensure the sealing performance of the connection between the first connecting pipe 400 and the second connecting pipe 500 and the valve body 100.

[0087] The first connector 400 may include a tube body and a first flange 600, and the second connector 500 may include a tube body and a first flange 600. The following description uses an example where the first connector 400 and the second connector 500 both include a tube body and a first flange 600.

[0088] Specifically, the sealing ring 800 can be fitted onto the side of the first connecting pipe 400 near the first interface 20 and the second connecting pipe 500 near the second interface 30, so that the first flange 600 can position the sealing ring 800. That is, when the first connecting pipe 400 is inserted into the first interface 20 and the second connecting pipe 500 is inserted into the second interface 30, the first flange 600 can stop the sealing ring 800, preventing the sealing ring 800 from falling off from the other side of the first connecting pipe 400 and the second connecting pipe 500, thereby improving the sealing performance of the proportional valve 1000.

[0089] In addition, the inner diameter of the sealing ring 800 can be smaller than the outer diameter of the first connecting pipe 400 and the second connecting pipe 500. In other words, when the sealing ring 800 is engaged with the first connecting pipe 400 and the second connecting pipe 500, the sealing ring 800 will be compressed, thereby increasing the contact area between the sealing ring 800 and the first connecting pipe 400 and the second connecting pipe 500, so as to improve the sealing performance of the proportional valve 1000.

[0090] Similarly, the outer diameter of the sealing ring 800 can be larger than the inner diameter of the first interface 20 and the second interface 30. In other words, when the sealing ring 800 is engaged with the first interface 20 and the second interface 30, the sealing ring 800 will be compressed, thereby increasing the contact area between the sealing ring 800 and the first interface 20 and the second interface 30, so as to improve the sealing performance of the proportional valve 1000.

[0091] Therefore, the first connecting pipe 400 and the second connecting pipe 500 can be quickly inserted into the valve body 100, improving the installation efficiency of the proportional valve 1000, while also ensuring the good sealing performance of the proportional valve 1000.

[0092] like Figure 2 As shown, in some embodiments of the present invention, the connector further includes a second flange 700, which is opposite to the first flange 600. The first flange 600 and the second flange 700 cooperate to form an annular groove for accommodating the sealing ring 800. The surface of the second flange 700 facing away from the first flange 600 is configured as a guide slope whose protrusion height gradually decreases relative to the outer peripheral surface of the tube body in a direction away from the first flange 600. Therefore, the sealing ring 800 can be fixed, and a guide slope can be provided for the connector to facilitate the insertion of the connector.

[0093] In some embodiments of the present invention, the connecting pipe is integrally molded, which can simplify the installation steps of the proportional valve 1000, and can ensure the structural strength of the connecting pipe and improve the durability of the proportional valve 1000.

[0094] like Figure 1 and Figure 7 As shown, according to an embodiment of the present invention, a gas device includes a proportional valve 1000 of any of the above embodiments. The second segment 22 of the proportional valve 1000 can be offset relative to the first segment 21 in a direction away from the second interface 30, so that the movable space of the sealing gasket 200 inside the proportional valve 1000 is offset accordingly, so that the projected area of ​​the proportional valve 1000 on the axis along the first segment 21 is reduced, thereby reducing the overall volume of the proportional valve 1000 and ultimately saving the internal layout space of the gas device.

[0095] In addition, the proportional valve 1000 can be threaded and / or snap-fit ​​connected to the gas equipment to strengthen the connection between the proportional valve 1000 and the gas equipment.

[0096] According to some specific examples of the present invention, the air inlet (i.e., the first interface 20) and the air outlet (i.e., the second interface 30) are perpendicular to each other, and the coil assembly (i.e., the electromagnetic drive 310) and the air outlet (i.e., the second interface 30) are arranged in the same direction, all three being on the same horizontal plane. The proportional valve 1000 is horizontally mounted on the bottom shell of the whole unit (i.e., the gas equipment). The thickness of the proportional valve 1000 does not exceed 18mm, and other components that cooperate with the proportional valve 1000 are made smaller accordingly, reducing the overall volume of the proportional valve 1000 while ensuring strength.

[0097] According to some specific examples of the present invention, the bottom of the proportional valve 1000 is provided with a buckle and a screw hole. The bottom shell of the whole machine (i.e., gas equipment) can be opened with an opening and a screw fixing hole to cooperate with it. When fixing the proportional valve 1000, the buckle can be passed through the opening first, and then pushed in horizontally so that the screw hole is aligned. Then, the proportional valve 1000 is fixed on the bottom shell by tightening the screw.

[0098] According to some specific examples of the present invention, the cross-sectional diameter of the upper plastic seat (i.e., the second seat 350) is smaller than that of the lower plastic seat (i.e., the first seat 340). The upper plastic seat (i.e., the second seat 350) passes through the diaphragm 320 and the magnet (i.e., the magnetic element 330) and is inserted into the lower plastic seat (i.e., the first seat 340). The magnet (i.e., the magnetic element 330) does not need to occupy the space between the upper plastic seat (i.e., the second seat 350) and the upper cover (i.e., the second cover 60), which greatly reduces the height of the upper cover (i.e., the second cover 60) and reduces the overall volume of the proportional valve 1000.

[0099] According to specific examples of the present invention, both the air inlet (i.e., the first interface 20) and the air outlet (i.e., the second interface 30) of the valve body 100 are quick-connect structures, avoiding air leakage problems that are easily caused by twisting pipes, and greatly improving installation efficiency. The air inlet channel is a parallel core-pulling structure, which allows for simple mold design when there are two or more rings, eliminating the need for post-processing drilling. The central axis of the air inlet pipe (i.e., the first connecting pipe 400) is offset from the central axis of the air inlet channel (i.e., the first interface 20) of the valve body 100, reducing the total length in the air outlet direction while meeting the flow channel area requirements, thus reducing the overall volume of the proportional valve 1000.

[0100] According to some specific examples of the present invention, the working principle of the proportional valve 1000 is as follows: First, the gas enters the first chamber (i.e., valve chamber 10) of the valve body 100 through the gas pipe assembly (i.e., the first connecting pipe 400) from the air inlet (i.e., the first interface 20). When the coil assembly (i.e., the electromagnetic drive 310) receives the current signal, it causes the soft magnetic rod to generate magnetic force, which repels the magnet below (i.e., the magnetic element 330). The ball valve (i.e., the sealing gasket 200) formed by the plastic lower seat (i.e., the first seat 340) and the sealing rubber element will move downward, and the gas will enter the second chamber from the first chamber, and then enter the gas pipe assembly (i.e., the second connecting pipe 500) at the air outlet (i.e., the second interface 30) for output.

[0101] According to some specific examples of the invention, the protrusion of the tracheal assembly (i.e., the first connector 400 and the second connector 500) may only have one protrusion on the right side, while the left side may be omitted; alternatively, a ramp may be present to facilitate the gradual expansion and sliding of the sealing ring 800 into the corresponding position. The sealing surface may accommodate one or more sealing rings 800.

[0102] According to some specific examples of the present invention, the inner diameter of the sealing ring 800 is smaller than the outer diameter of the sealing surface of the air pipe assembly (i.e., the second connecting pipe 500), and the outer diameter of the sealing ring 800 is larger than the inner diameter of the air outlet (i.e., the second interface 30) of the valve body 100 assembly. The sealing surface is formed by compression deformation of both.

[0103] According to some specific examples of the present invention, an ultra-thin structure is proposed, in which the air intake channel (i.e., the first interface 20), the air outlet channel (i.e., the second interface 30), and the proportional valve 1000 are all on the same horizontal plane, with an overall thickness not exceeding 18mm; the air intake channel (i.e., the first interface 20) and the air outlet channel (i.e., the second interface 30) adopt a quick-connect structure, which improves the overall pipe connection efficiency while ensuring the gas passage area, and is equipped with a snap-fit ​​connection, which facilitates the assembly with the bottom shell of the whole machine; the proportional valve 1000 has a high degree of modularity and strong compatibility, and can realize the dual-ring, triple-ring, and more passage settings, and the control between each ring can be freely combined.

[0104] In the description of this invention, it should be understood that the terms "length", "thickness", "upper", "lower", "front", "rear", "left", "right", "horizontal", "top", "bottom", "inner", "outer", "axial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not 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.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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 valve body for a proportional valve, characterized in that, The valve body has a valve cavity (10), a first interface (20) and a second interface (30). The first interface (20) is located on the peripheral wall of the valve body, and the second interface (30) is located at one end of the valve body. The first interface (20) and the second interface (30) can communicate through the valve cavity (10). The first interface (20) includes a first segment (21) and a second segment (22). The first segment (21) communicates with the second segment (22), and the second segment (22) communicates with the valve cavity (10). The second segment (22) is closer to the valve cavity (10) than the first segment (21), and the second segment (22) is offset away from the second interface (30) relative to the first segment (21). The axis of the second segment (22) is offset away from the second interface (30) compared to the axis of the first segment (21); The inner peripheral surface of the first interface (20) further includes a first stepped surface (70), which is connected between the inner peripheral surface of the first segment (21) and the inner peripheral surface of the second segment (22). A groove (23) is provided on the first stepped surface (70), the opening of the groove (23) is opposite to the first segment (21), and the groove (23) is connected to the second segment (22). In the projection along the axis of the first segment (21), the second segment (22) falls within the coverage area of ​​the first segment (21).

2. The valve body of the proportional valve according to claim 1, characterized in that, The inner circumferential surface of the sinking trough (23) is connected to the inner circumferential surface of the second segment (22), and the inner bottom surface of the sinking trough (23) is lower than the first step surface (70) so that the sinking trough (23) is connected to the second segment (22).

3. The valve body of the proportional valve according to claim 1, characterized in that, The axis of the first segment (21) and the axis of the second segment (22) are parallel to each other.

4. The valve body of the proportional valve according to any one of claims 1-3, characterized in that, include: The valve body (40) has the valve cavity (10) formed inside it and is open at both ends. The first interface (20) is provided on the peripheral wall of the valve body (40). A first cover (50) is connected to one end of the valve body (40), and a second interface (30) is provided on the first cover (50); The second cover (60) is connected to the other end of the valve body (40).

5. The valve body of the proportional valve according to claim 4, characterized in that, The second cover (60) is provided with a vent hole (61).

6. The valve body of the proportional valve according to any one of claims 1-3, characterized in that, The axis of the first segment (21), the axis of the second segment (22), and the axis of the second interface (30) are located on the same plane; And / or, the axis of the first segment (21) and the axis of the second segment (22) are collinear, and the dimension of the valve body along the thickness direction is less than or equal to 18 mm, the thickness direction being perpendicular to the axis of the first segment (21), the axis of the second segment (22) and the axis of the second interface (30).

7. A proportional valve, characterized in that, include: Valve body according to any one of claims 1-6; A sealing gasket (200) is disposed in the valve body and is movable to change the opening degree between the first interface (20) and the second interface (30); A drive assembly connected to the sealing gasket (200) to drive the sealing gasket (200) to move.

8. The proportional valve according to claim 7, characterized in that, The inner circumferential surface of the valve body includes a second stepped surface (80), which extends circumferentially along the valve body and faces the second interface (30). The second stepped surface (80) is located on the side of the first interface (20) near the second interface (30). The sealing gasket (200) is adapted to move between the second stepped surface (80) and the second interface (30) to adjust the opening between the first interface (20) and the second interface (30).

9. The proportional valve according to claim 7, characterized in that, The driving component includes: An electromagnetic drive unit (310) is connected to the other end of the valve body; A diaphragm (320) is connected to the valve body and closes the other end of the valve body. The first interface (20) and the second interface (30) are located on the same side of the diaphragm (320). A magnetic component (330) is connected to the sealing gasket (200), and the magnetic component (330) is adapted to drive the sealing gasket (200) to move under the driving action of the electromagnetic drive component (310).

10. The proportional valve according to claim 9, characterized in that, The driving component also includes: A first seat (340) is connected to the sealing gasket (200); The second seat (350) passes through the diaphragm (320) and is inserted into the first seat (340), and the second seat (350) and the first seat (340) cooperate to clamp and fix the diaphragm (320).

11. The proportional valve according to claim 10, characterized in that, The magnetic component (330) is sleeved on the second base (350) and is clamped and fixed by the first base (340) and the second base (350).

12. The proportional valve according to claim 9, characterized in that, The axis of the electromagnetic drive (310) extends along the axial direction of the valve body and is disposed opposite to the second interface (30).

13. The proportional valve according to claim 9, characterized in that, The proportional valve also includes: The first connector (400) is inserted into the first segment (21) of the first interface (20); The second connector (500) is plugged into the second interface (30).

14. The proportional valve according to claim 13, characterized in that, At least one of the first connector (400) and the second connector (500) includes: body part of tube; The first flange (600) protrudes from the outer peripheral surface of the tube body and is used to position the sealing ring (800).

15. The proportional valve according to claim 14, characterized in that, The connector further includes a second flange (700) opposite to the first flange (600). The first flange (600) and the second flange (700) cooperate to form an annular groove for accommodating a sealing ring (800). The surface of the second flange (700) facing away from the first flange (600) is configured as a guide slope whose convex height gradually decreases relative to the outer peripheral surface of the tube body in a direction away from the first flange (600). And / or, the connector is integrally formed.

16. A gas-fired appliance, characterized in that, Includes the proportional valve according to any one of claims 7-15.

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