Valve port member and electromagnetic proportional valve

Abstract

This application provides a valve port component and an electromagnetic proportional valve. The electromagnetic proportional valve includes a valve core that can move up and down. The valve port component includes a base with an outlet chamber formed inside. The bottom of the outlet chamber is open. The base includes a main body and a protrusion at the top of the main body. The protrusion has a first air inlet communicating with the outlet chamber. The valve core is configured to abut against the protrusion to seal the first air inlet, and to separate from the protrusion to keep the first air inlet unobstructed. The base also forms a pressure regulating channel with an open top. The pressure regulating channel is adjacent to the protrusion, and a second air inlet communicating with the pressure regulating channel is provided on the side of the base. The valve port component in this embodiment can achieve a higher maximum controllable flow rate and is beneficial for reducing the size of the electromagnetic proportional valve and the required coil power.

Description

Technical Field

[0001] This application relates to the field of fluid control technology, and in particular to a valve port component and an electromagnetic proportional valve. Background Technology

[0002] Electromagnetic proportional valves are common devices in the field of fluid control, and their function is to regulate the flow rate of fluid.

[0003] The electromagnetic proportional valve in the related technology includes a valve port component, an electromagnetic assembly, a valve core, and an elastic element. The valve port component has an outlet chamber inside. When the electromagnetic assembly does not provide electromagnetic force, the elastic element can drive the valve core to move in the direction of the valve port component and keep the valve core in contact with the valve port component. At this time, the outlet chamber is sealed by the valve core, and the flow rate of the electromagnetic proportional valve is zero.

[0004] When the external system requires a certain flow rate, the coil in the electromagnetic component is energized, causing the electromagnetic component to provide electromagnetic force to the valve core. When the electromagnetic force is sufficient to overcome the static pressure of the gas and the spring force, the valve core rises, creating a flow gap between the valve core and the valve port component. At this point, the fluid flows into the interior of the valve port component due to the pressure difference, thus generating flow. Simultaneously, the spring is compressed, increasing its elastic force. When the electromagnetic force, the static pressure of the gas, and the elastic force are balanced, the valve core stops moving. In short, the basic principle of an electromagnetic proportional valve is to adjust the position of the valve core by adjusting the excitation current of the coil, thereby regulating the flow rate of the fluid.

[0005] In related technologies, electromagnetic proportional valves typically feature a circular air inlet in their valve port component. When the maximum controllable flow rate of the electromagnetic proportional valve needs to be increased, the common approach is to increase the design diameter of the valve port component. However, the static pressure of the gas is proportional to the square of the inlet diameter, which means the required electromagnetic force is also proportional to the square of the inlet diameter. In other words, to increase the maximum controllable flow rate of an electromagnetic proportional valve, it is necessary to both increase the size of the valve port component (resulting in a larger overall valve size) and significantly increase the coil power of the electromagnetic component, which is detrimental to energy conservation and environmental protection. Summary of the Invention

[0006] This application provides a valve port component and an electromagnetic proportional valve, which aims to achieve a higher maximum controllable flow rate while reducing the size of the electromagnetic proportional valve and the required coil power.

[0007] The specific technical solution is as follows: An embodiment of the first aspect of this application provides a valve port component for an electromagnetic proportional valve. The electromagnetic proportional valve includes a valve core that can move up and down. The valve port component includes a base, and an air outlet chamber is formed inside the base. The bottom of the air outlet chamber is open. The base includes a main body and a protrusion located at the top of the main body. The protrusion has a first air inlet communicating with the air outlet chamber. The valve core is configured to abut against the protrusion to seal the first air inlet, and to separate from the protrusion to keep the first air inlet unobstructed. The base also forms a pressure regulating channel, the top of which is open. The pressure regulating channel is adjacent to the protrusion. A second air inlet communicating with the pressure regulating channel is provided on the side of the base.

[0008] In this embodiment, when the valve core seals the first inlet, the high-pressure fluid not only surrounds the base but also enters the pressure regulating channel through the second inlet. Furthermore, the fluid in the pressure regulating channel directly contacts the bottom surface of the valve core. With a flow gap between the valve core and the protrusion, the fluid around the base enters the outlet chamber through the flow gap and the first inlet. Simultaneously, fluid from the pressure regulating channel also enters the outlet chamber through the flow gap and the first inlet. This allows the first inlet to simultaneously receive fluid from different directions. Compared to related technologies where the inlet of the valve component can only receive fluid from around the valve component, the effective flow area is larger. Therefore, the electromagnetic proportional valve can achieve a higher maximum controllable flow rate without increasing the overall size of the valve component, thus facilitating a reduction in the size of the electromagnetic proportional valve.

[0009] Furthermore, for the valve port component in this embodiment, since the fluid in the pressure regulating channel directly contacts the bottom surface of the valve core, the static gas pressure only acts on the contact surface between the protrusion and the valve core. In contrast, in related technologies, the static gas pressure acts on the entire circular area of ​​the air inlet. In other words, the area where the static gas pressure acts on the valve port component in this embodiment is much smaller, resulting in a much lower static gas pressure. This significantly reduces the electromagnetic force required by the electromagnetic proportional valve, thereby substantially reducing the coil power of the electromagnetic component.

[0010] In summary, the valve port component in the embodiments of this application can achieve a higher maximum controllable flow rate, and is beneficial to reducing the size of the electromagnetic proportional valve and the required coil power.

[0011] In some embodiments, the pressure regulating channel includes a vertical channel portion and at least one horizontal channel portion. The vertical channel portion extends along the height direction of the base, and the top of the vertical channel portion is open. The vertical channel portion is disposed adjacent to the protrusion. The horizontal channel portion communicates with the vertical channel portion, and one end of the horizontal channel portion away from the vertical channel portion communicates with the second air inlet.

[0012] This configuration allows fluid around the base to enter the transverse channel through the second air inlet, and then into the vertical channel. Because the top of the vertical channel is open, when the valve core seals the first air inlet, the fluid in the vertical channel directly contacts the valve core. This means the static pressure of the gas acts only on the contact surface between the protrusion and the valve core. When a flow gap exists between the valve core and the protrusion, the fluid in the vertical channel further passes through the flow gap and the first air inlet into the outlet chamber of the base.

[0013] In some embodiments, the number of protrusions is one, the protrusion is an annular protrusion, the first air inlet is an annular air inlet or an arc-shaped air inlet, and the protrusion is arranged around the vertical channel portion.

[0014] With a flow gap between the valve core and the protrusion, the fluid received by the first air inlet includes fluid from both the area around the base and the vertical channel surrounded by the protrusion. In other words, the first air inlet can simultaneously receive fluid from both internal and external directions. Assuming the width of the first air inlet is greater than the flow gap, the effective flow area is approximately twice the circumference of the second air inlet multiplied by the width of the flow gap. Compared to valve components in related technologies, the maximum controllable flow rate can be increased by almost two times.

[0015] In some embodiments, the transverse channel extends radially along the base and communicates with the vertical channel. This arrangement helps to shorten the size of the transverse channel and also makes the transverse channel easier to manufacture.

[0016] In some embodiments, there are multiple transverse channels, which are evenly distributed circumferentially along the base. This arrangement helps to ensure the flow rate of fluid entering the vertical channels, and consequently, the flow rate of fluid entering the first air inlet.

[0017] In some embodiments, the number of protrusions is multiple, and the protrusions are annular protrusions or arc-shaped protrusions. At least two of the protrusions have different radii, and each of the protrusions is provided with a first air inlet. Each first air inlet is connected to the air outlet chamber.

[0018] The number of protrusions is multiple, and the protrusions are either annular or arc-shaped. At least two protrusions have different radii, which makes the protrusions distributed on different circumferences. Correspondingly, the different first air inlets are also distributed on different circumferences. Compared with the arrangement of a single annular protrusion, a larger flow rate can be achieved.

[0019] In some embodiments, the pressure regulating channel includes a central channel portion and a peripheral channel portion, the peripheral channel portion being annular; the peripheral channel portion is provided between two radially adjacent protrusions along the base, the innermost protrusion is arranged around the central channel portion, the second air inlet communicates with the outermost peripheral channel portion, two radially adjacent peripheral channel portions along the base communicate with each other, and the central channel portion communicates with the adjacent peripheral channel portion.

[0020] This design ensures that the inner side of the outermost protrusion has a vertical channel, while the inner and outer sides of the remaining protrusions also have vertical channels. This allows for a flow gap between the valve core and the protrusions, ensuring that the first air inlet on each protrusion can receive fluid from both internal and external directions, thus achieving a higher maximum controllable flow rate.

[0021] In some embodiments, the protrusion is configured as a spiral, the first air inlet is spiral, and the pressure regulating channel is configured as a spiral channel, with one end of the spiral channel away from the center of the base communicating with the second air inlet.

[0022] On the one hand, constructing the first air inlet in a spiral shape allows for a larger flow rate compared to a single, annular protrusion. On the other hand, the pressure regulating channel is constructed as a spiral channel, so that even with a flow gap between the valve core and the protrusion, each part of the first air inlet can receive fluid from both internal and external directions, thereby achieving a higher maximum controllable flow rate.

[0023] In some embodiments, there are multiple protrusions arranged circumferentially along the base. Each protrusion includes a first segment, a second segment, and a third segment. The first segment and the third segment are both arc-shaped. The first segment is located on the periphery of the third segment. The second segment extends radially along the base and connects the first segment and the third segment. The first air inlet includes a first sub-segment, a second sub-segment, and a third sub-segment. The first sub-segment is disposed on the first segment, the second sub-segment is disposed on the second segment, and the third sub-segment is disposed on the third segment.

[0024] This configuration allows for a larger flow rate compared to a single, ring-shaped protrusion.

[0025] In some embodiments, the pressure regulating channel includes a central channel portion and a plurality of peripheral channel portions, with one peripheral channel portion located between any two adjacent protrusions, and a plurality of third segments arranged around the central channel portion; the number of second air inlets is equal to the number of peripheral channel portions, each second air inlet is connected to one peripheral channel portion, and each peripheral channel portion is connected to the central channel portion.

[0026] With this configuration, a flow gap is created between the valve core and the protrusion, allowing each part of the first air inlet to receive fluid from multiple directions, thereby achieving a higher maximum controllable flow rate.

[0027] An embodiment of the second aspect of this application provides an electromagnetic proportional valve, which includes a valve seat, a valve core, a magnetic component, an elastic element, and a valve port component as described in any of the above embodiments. The valve seat forms an inlet channel and an outlet channel. A base is disposed inside the valve seat, the outlet chamber communicates with the outlet channel, and a second inlet communicates with the inlet channel. The elastic element is configured to drive the valve core to move in the direction of the valve port component, and the magnetic component is configured to drive the valve core to move away from the valve port component. The valve core is configured to abut against the protrusion to seal the first inlet and to separate from the protrusion to keep the first inlet open. When the first inlet is sealed, the inlet channel and the outlet channel are blocked by the valve core and the base. When the first inlet is open, the inlet channel communicates with the outlet channel through the outlet chamber.

[0028] The electromagnetic proportional valve in this embodiment is based on the same inventive concept as the valve port component in the above embodiment. Therefore, the electromagnetic proportional valve in this embodiment can obtain the beneficial effects of the valve port component in the above embodiment.

[0029] In some embodiments, the electromagnetic proportional valve further includes a support member connected to the valve seat, the magnetic component being sleeved on the outside of the support member, and the elastic element located between the support member and the valve core. By providing the support member, the magnetic component and the elastic element can be installed, and the elastic element can drive the valve core to move in the direction of the valve port component. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the valve port component provided in the first embodiment of this application; Figure 2 A cross-sectional schematic diagram of the valve port component provided in the first embodiment of this application; Figure 3 A cross-sectional schematic diagram of the valve port component provided in the first embodiment of this application (and...) Figure 2 (Different cross sections) Figure 4 This is a schematic diagram of the structure of an electromagnetic proportional valve provided in an embodiment of this application; Figure 5 for Figure 4 A partially enlarged schematic diagram of the structure shown; Figure 6 for Figure 5 Schematic diagram of the cross section along the AA direction; Figure 7 This is a schematic diagram of the structure of an electromagnetic proportional valve in related technologies. Figure 8 This is a pressure cloud diagram of an electromagnetic proportional valve in related technologies when a flow gap occurs between the valve core and the valve port component. Figure 9 Pressure cloud diagram of the electromagnetic proportional valve provided in the first embodiment of this application when a flow gap is generated between the valve core and the valve port component; Figure 10 This is a schematic diagram of the structure of the first component provided in an embodiment of this application; Figure 11 This is a schematic diagram of the structure of the second component provided in an embodiment of this application; Figure 12 This is a schematic diagram of the valve port component provided in the second embodiment of this application; Figure 13 A cross-sectional schematic diagram of the valve port component provided in the second embodiment of this application; Figure 14 This is a schematic diagram of the valve port component provided in the third embodiment of this application; Figure 15 A cross-sectional schematic diagram of the valve port component provided in the third embodiment of this application; Figure 16 This is a schematic diagram of the valve port component provided in the fourth embodiment of this application; Figure 17 A top view of the valve port component provided in the fourth embodiment of this application; Figure 18 This is a schematic diagram of the valve port component provided in the fifth embodiment of this application; Figure 19 This is a top view of the valve port component provided in the fifth embodiment of this application.

[0031] The attached figures are labeled as follows: 10', Valve port assembly; 20', Valve core; 113', Air inlet; 114', Chamber; 1. Electromagnetic proportional valve; 10. Valve port components; 11. Base; 111. Main body; 112. Protrusion; 1121. First section; 1122. Second section; 1123. Third section; 113. First air inlet; 1131. First sub-section; 1132. Second sub-section; 1133. Third sub-section; 114. Air outlet chamber; 115. Pressure regulating channel; 116. Second air inlet; 117. Vertical channel section; 118. Horizontal channel section; 119. Central channel section; 120. Peripheral channel section; 1101. First component; 1102. Second component; 12. Connecting part; 20. Valve core; 30. Magnetic component; 31. Coil; 40. Valve seat; 41. Inlet passage; 42. Outlet passage; 50. Elastic components; 60. Upper shell; 70. Supporting components. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0033] In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" 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 application 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, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] like Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, an embodiment of the first aspect of this application provides a valve port component 10 for use in an electromagnetic proportional valve 1, wherein the electromagnetic proportional valve 1 includes a valve core 20 that can move up and down.

[0037] The valve port component 10 includes a base 11, inside which an air outlet chamber 114 is formed. The bottom of the air outlet chamber 114 is open. The base 11 includes a main body 111 and a protrusion 112 located at the top of the main body 111. The protrusion 112 has a first air inlet 113 communicating with the air outlet chamber 114. The valve core 20 is configured to abut against the protrusion 112 to seal the first air inlet 113, and to separate from the protrusion 112 to keep the first air inlet 113 unobstructed. The base 11 also forms a pressure regulating channel 115, the top of which is open. The pressure regulating channel 115 is adjacent to the protrusion 112. The side of the base 11 has a second air inlet 116 communicating with the pressure regulating channel 115.

[0038] It is understood that the electromagnetic proportional valve 1 also includes a magnetic component 30 and an elastic element 50. The elastic element 50 is configured to drive the valve core 20 to move in the direction of the valve port component 10 (i.e., move downwards), and the magnetic component 30 is configured to drive the valve core 20 to move away from the valve port component 10 (i.e., move upwards). The magnetic component 30 may further include a coil 31, and the electromagnetic force of the magnetic component 30 can be adjusted by adjusting the excitation current of the coil 31.

[0039] The valve port component 10 can be disposed inside the valve seat 40 of the electromagnetic proportional valve 1. The valve seat 40 can be provided with an air inlet channel 41 and an air outlet channel 42. The air outlet chamber 114 of the valve port component 10 is connected to the air outlet channel 42. The outer surface of the base 11 is also exposed to the air inlet channel 41. The second air inlet 116 on the side of the base 11 is also connected to the air inlet channel 41.

[0040] When the valve core 20 abuts against the protrusion 112, the valve core 20 forms a seal against the first air inlet 113. The air inlet channel 41 and the air outlet channel 42 are blocked by the valve core 20 and the base 11. The fluid in the air inlet channel 41 cannot enter the air outlet chamber 114. At this time, the flow rate of the electromagnetic proportional valve 1 is zero.

[0041] When the valve core 20 separates from the protrusion 112, a flow gap is generated between the valve core 20 and the protrusion 112, and the airflow of the intake channel 41 can enter the exhaust chamber 114 through the first intake port 113. At this time, the electromagnetic proportional valve 1 generates a corresponding flow rate.

[0042] Please refer to Figure 7 In the related technology, the valve port component 10' has a circular air inlet 113', and the interior of the valve port component 10' is a vertically penetrating chamber 114'. When a flow gap is created between the valve core 20' and the valve port component 10', fluid around the valve port component 10' enters the interior of the valve port component 10' through the flow gap and the air inlet 113'. The fluid flow rate is limited by the flow gap; specifically, the effective flow area of ​​the fluid is equal to the circumference of the air inlet multiplied by the width of the flow gap (the distance between the bottom surface of the valve core and the top surface of the valve port component). It can be understood that the larger the effective flow area of ​​the fluid, the greater the flow rate of the electromagnetic proportional valve.

[0043] Please refer to Figure 4 , Figure 5 as well as Figure 6 In this embodiment of the application, when the valve core 20 seals the first air inlet 113, the high-pressure fluid not only surrounds the base 11 but also enters the pressure regulating channel 115 through the second air inlet 116. Furthermore, the fluid in the pressure regulating channel 115 directly contacts the bottom surface of the valve core 20. When a flow gap is created between the valve core 20 and the protrusion 112, the fluid around the base 11 enters the outlet chamber 114 through the flow gap and the first air inlet 113. Simultaneously, the fluid from the pressure regulating channel 115 also enters the outlet chamber 114 through the flow gap and the first air inlet 113. This allows the first air inlet 113 to simultaneously receive fluid from different directions. Compared to the related art where the air inlet 113' of the valve core 10' can only receive fluid from around the valve core, the effective flow area of ​​the fluid is larger. Therefore, the electromagnetic proportional valve 1 can achieve a higher maximum controllable flow rate without increasing the overall size of the valve port component 10, which helps to reduce the size of the electromagnetic proportional valve 1.

[0044] Furthermore, for the valve port component 10 in this embodiment, since the fluid in the pressure regulating channel 115 directly contacts the bottom surface of the valve core 20, the static pressure of the gas only acts on the contact surface between the protrusion 112 and the valve core 20. In contrast, for the valve port component 10' in related technologies, the static pressure of the gas acts on the entire circular area of ​​the air inlet 113'. In other words, the area where the static pressure of the valve port component 10 in this embodiment acts is much smaller, and therefore the static pressure of the gas is also much smaller. This results in a much smaller electromagnetic force required by the electromagnetic proportional valve 1, thereby significantly reducing the power of the coil 31 of the electromagnetic component.

[0045] Figure 8 Pressure contour map of an electromagnetic proportional valve in related technologies when a flow gap is generated between the valve core 20' and the valve port component 10'; Figure 9 This is a pressure contour map of the electromagnetic proportional valve 1 provided in the first embodiment of this application when a flow gap is generated between the valve core 20 and the valve port component 10. Figure 8 and Figure 9 As can be seen from the comparison, the electromagnetic proportional valve in the related technology has a large low-pressure area below its valve core 20', while the electromagnetic proportional valve 1 in this embodiment of the application has a low-pressure area only at the first air inlet 113 position for the valve core 20. Thus, the gas static pressure on the valve core 20 will be significantly less than the gas static pressure on the valve core ' in the related technology. Correspondingly, the electromagnetic force required by the electromagnetic proportional valve 1 in this embodiment of the application will also be significantly less than that of the electromagnetic proportional valve in the related technology.

[0046] In summary, the valve port component 10 in this embodiment can achieve a higher maximum controllable flow rate and is beneficial for reducing the size of the electromagnetic proportional valve 1 and the required power of the coil 31.

[0047] like Figure 1 As shown, in some embodiments, the valve port component 10 may further include a connecting portion 12, which is located at the bottom of the base 11 and connected to the base 11, and is disposed on the outside of the base 11. A connecting hole may be provided on the connecting portion 12, so that the connecting portion 12 can be connected to the valve seat 40 of the electromagnetic proportional valve 1 through a connector passing through the connecting hole, thereby realizing the installation of the valve port component 10.

[0048] In some embodiments, the base 11 can be a split structure or a one-piece molded structure (e.g., Figure 13 , Figure 14 (As shown). If the base 11 is a split structure, please refer to... Figure 10 , Figure 11The base 11 may include a first component 1101 and a second component 1102. The first component 1101 is connected to the second component 1102. The first component 1101 forms a pressure regulating channel 115 and a second air inlet. The first component 1101 and the second component 1102 together define an exhaust chamber 114 and a first air inlet 113.

[0049] For example, the second component 1102 can be connected to the first component 1101 by welding. That is, when processing the base 11, the first component 1101 and the second component 1102 can be manufactured separately, and then the first component 1101 and the second component 1102 can be connected together.

[0050] like Figure 1 , Figure 2 as well as Figure 3 As shown, in some embodiments, the pressure regulating channel 115 includes a vertical channel portion 117 and at least one horizontal channel portion 118. The vertical channel portion 117 extends along the height direction of the base 11, and the top of the vertical channel portion 117 is open. The vertical channel portion 117 is disposed adjacent to the protrusion 112. The horizontal channel portion 118 communicates with the vertical channel portion 117, and one end of the horizontal channel portion 118 away from the vertical channel portion 117 communicates with the second air inlet 116.

[0051] This configuration allows fluid around the base 11 to enter the transverse channel 118 through the second air inlet 116, and then enter the vertical channel 117 via the transverse channel 118. Because the top of the vertical channel 117 is open, when the valve core 20 seals the first air inlet 113, the fluid in the vertical channel 117 directly contacts the valve core 20, causing the static pressure to act only on the contact surface between the protrusion 112 and the valve core 20. When a flow gap is created between the valve core 20 and the protrusion 112, the fluid in the vertical channel 117 further passes through the flow gap and the first air inlet 113 into the air outlet chamber 114 of the base 11.

[0052] like Figure 1 , Figure 12 As shown, in some embodiments, the number of protrusions 112 is one, the protrusion 112 is an annular protrusion, the first air inlet 113 is an annular air inlet or an arc-shaped air inlet, and the protrusion 112 is arranged around the vertical channel portion 117.

[0053] When a flow gap is created between the valve core 20 and the protrusion 112, the fluid received by the first air inlet 113 includes fluid from both the area around the base 11 and the vertical channel portion 117 surrounded by the protrusion 112. In other words, the first air inlet 113 can simultaneously receive fluid from both internal and external directions. With the width of the first air inlet 113 greater than the flow gap, the effective flow area is approximately equal to twice the circumference of the second air inlet 116 multiplied by the width of the flow gap. Compared to the valve port component 10' in related technologies, the maximum controllable flow rate can be increased by almost two times.

[0054] like Figure 1 , Figure 3 As shown, the transverse channel portion 118 can extend radially along the base 11 and communicate with the vertical channel portion 117. This arrangement helps to shorten the size of the transverse channel portion 118 and also makes the transverse channel portion 118 easier to process.

[0055] like Figure 1 , Figure 3 As shown, there can be multiple transverse channel sections 118, which are evenly distributed along the circumference of the base 11. This arrangement helps to ensure the flow rate of fluid entering the vertical channel section 117, and thus helps to ensure the flow rate of fluid entering the first air inlet 113.

[0056] like Figure 14 , Figure 15 As shown, in some embodiments, there are multiple protrusions 112, which are annular or arc-shaped protrusions. At least two protrusions 112 have different radii, and each protrusion 112 is provided with a first air inlet 113. Each first air inlet 113 is connected to the air outlet chamber 114.

[0057] It is understandable that a ring-shaped protrusion refers to a protruding structure that extends circumferentially and is connected end to end, while an arc-shaped protrusion is a protruding structure that extends circumferentially but is not connected end to end.

[0058] There are multiple protrusions 112, which are either annular or arc-shaped. At least two protrusions 112 have different radii, which means that the protrusions 112 are distributed on different circumferences. Correspondingly, different first air inlets 113 are also distributed on different circumferences. Compared with the arrangement of a single annular protrusion 112, a larger flow rate can be achieved.

[0059] like Figure 14As shown, the pressure regulating channel 115 further includes a central channel portion 119 and an outer channel portion 120, the outer channel portion 120 being annular; the outer channel portion 120 is provided between two adjacent protrusions 112 along the radial direction of the base 11, the innermost protrusion 112 is arranged around the central channel portion 119, the second air inlet 116 is connected to the outermost outer channel portion 120, the two adjacent outer channel portions 120 along the radial direction of the base 11 are connected to each other, and the central channel portion 119 is connected to the adjacent outer channel portion 120.

[0060] This configuration ensures that the outermost protrusion 112 has an outer peripheral channel 120 on its inner side, the innermost protrusion 112 has a central channel 119 on its inner side, and the remaining protrusions 112 have outer peripheral channel 120s on both their inner and outer sides. This arrangement ensures that even with a flow gap between the valve core 20 and the protrusions 112, the first air inlet 113 on each protrusion 112 can receive fluid from both internal and external directions, achieving a higher maximum controllable flow rate.

[0061] like Figure 16 , Figure 17 As shown, in some of the embodiments, the protrusion 112 is constructed in a spiral shape, the first air inlet 113 is spiral-shaped, the pressure regulating channel 115 is constructed in a spiral channel, and one end of the spiral channel away from the center of the base 11 is connected to the second air inlet 116.

[0062] On the one hand, by constructing the first air inlet 113 in a spiral shape, a larger flow rate can be achieved compared to the arrangement of a single, annular protrusion 112. On the other hand, the pressure regulating channel 115 is constructed as a spiral channel, so that when a flow gap is generated between the valve core 20 and the protrusion 112, each part of the first air inlet 113 can receive fluid from both internal and external directions, thereby achieving a higher maximum controllable flow rate.

[0063] like Figure 18 , Figure 19 As shown, in some embodiments, there are multiple protrusions 112, which are arranged circumferentially along the base 11. Each protrusion 112 includes a first segment 1121, a second segment 1122, and a third segment 1123. Both the first segment 1121 and the third segment 1123 are arc-shaped. The first segment 1121 is located on the periphery of the third segment 1123. The second segment 1122 extends radially along the base 11 and connects the first segment 1121 and the third segment 1123. The first air inlet 113 includes a first sub-segment 1131, a second sub-segment 1132, and a third sub-segment 1133. The first sub-segment 1131 is disposed on the first segment 1121, the second sub-segment 1132 is disposed on the second segment 1122, and the third sub-segment 1133 is disposed on the third segment 1123.

[0064] This configuration allows for a larger flow rate compared to a single, annular protrusion 112.

[0065] Furthermore, the pressure regulating channel 115 includes a central channel section 119 and a plurality of peripheral channel sections 120. A peripheral channel section 120 is provided between any two adjacent protrusions 112. A plurality of third sections 1123 are arranged around the central channel section 119. The number of second air inlets 116 is equal to the number of peripheral channel sections 120. Each second air inlet 116 is connected to a peripheral channel section 120, and each peripheral channel section 120 is connected to the central channel section 119.

[0066] With this configuration, when a flow gap is created between the valve core 20 and the protrusion 112, each part of the first air inlet 113 can receive fluid from multiple directions, thereby achieving a higher maximum controllable flow rate.

[0067] like Figure 4 , Figure 5 As shown, an embodiment of the second aspect of this application provides an electromagnetic proportional valve 1, which includes a valve seat 40, a valve core 20, a magnetic component 30, an elastic element 50, and a valve port component 10 as described in any of the above embodiments. Specifically, the valve seat 40 forms an air inlet channel 41 and an air outlet channel 42, and the elastic element 50. A base 11 is disposed inside the valve seat 40, an air outlet chamber 114 communicates with the air outlet channel 42, a second air inlet 116 communicates with the air inlet channel 41, the elastic element 50 is configured to drive the valve core 20 to move in the direction of the valve port component 10, and the magnetic component 30 is configured to drive the valve core 20 to move away from the valve port component 10. The valve core 20 is configured to abut against the protrusion 112 to seal the first air inlet 113, and to separate from the protrusion 112 to keep the first air inlet 113 unobstructed. When the first air inlet 113 is sealed, the air inlet channel 41 and the air outlet channel 42 are blocked by the valve core 20 and the base 11. When the first air inlet 113 is unobstructed, the air inlet channel 41 is connected to the air outlet channel 42 through the air outlet chamber 114.

[0068] In the electromagnetic proportional valve 1 of this application embodiment, when the valve core 20 forms a seal with the first air inlet 113, the high-pressure fluid not only surrounds the base 11, but also enters the pressure regulating channel 115 through the second air inlet 116. Furthermore, the fluid in the pressure regulating channel 115 directly contacts the bottom surface of the valve core 20. When a flow gap is generated between the valve core 20 and the protrusion 112, the fluid around the base 11 enters the outlet chamber 114 through the flow gap and the first air inlet 113. At the same time, the fluid from the pressure regulating channel 115 also enters the outlet chamber 114 through the flow gap and the first air inlet 113. This allows the first air inlet 113 to simultaneously receive fluid from different directions. Compared to the method in the related art where the air inlet 113' of the valve port component 10' can only receive fluid from around the valve port component, the effective flow area of ​​the fluid is larger. Therefore, the electromagnetic proportional valve 1 can achieve a higher maximum controllable flow rate without increasing the overall size of the valve port component 10, which helps to reduce the size of the electromagnetic proportional valve 1.

[0069] Furthermore, for the valve port component 10 in this embodiment, since the fluid in the pressure regulating channel 115 directly contacts the bottom surface of the valve core 20, the static pressure of the gas only acts on the contact surface between the protrusion 112 and the valve core 20. In contrast, for the valve port component 10' in related technologies, the static pressure of the gas acts on the entire circular area of ​​the air inlet 113'. In other words, the area where the static pressure of the valve port component 10 in this embodiment acts is much smaller, and therefore the static pressure of the gas is also much smaller. This results in a much smaller electromagnetic force required by the electromagnetic proportional valve 1, thereby significantly reducing the power of the coil 31 of the electromagnetic component.

[0070] In some embodiments, the electromagnetic proportional valve 1 further includes a support member 70 connected to the valve seat 40, a magnetic component 30 sleeved on the outside of the support member 70, and an elastic element 50 located between the support member 70 and the valve core 20.

[0071] For example, the support member 70 can be a fixed sleeve.

[0072] By setting the support member 70, the magnetic component 30 and the elastic element 50 can be installed, and the elastic element 50 can drive the valve core 20 to move in the direction of the valve port component 10.

[0073] In some embodiments, the electromagnetic proportional valve 1 further includes an upper housing 60, which is mounted on top of the valve seat 40 and covers the outside of the magnetic assembly 30.

[0074] In this way, the upper housing 60 can be used to protect the magnetic component 30 and the valve core 20, thereby ensuring the working stability of the electromagnetic proportional valve 1.

[0075] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A valve port component (10) for an electromagnetic proportional valve (1), the electromagnetic proportional valve (1) comprising a valve core (20) movable vertically, characterized in that, The valve port component (10) includes a base (11), the interior of which is formed an air outlet chamber (114), the bottom of which is open. The base (11) includes a main body (111) and a protrusion (112) at the top of the main body (111). The protrusion (112) is provided with a first air inlet (113) communicating with the air outlet chamber (114). The valve core (20) is configured to abut against the protrusion (112) to seal the first air inlet (113), and to separate from the protrusion (112) to keep the first air inlet (113) unobstructed. The base (11) also forms a pressure regulating channel (115), the top of the pressure regulating channel (115) is open, the pressure regulating channel (115) is adjacent to the protrusion (112), and the side of the base (11) is provided with a second air inlet (116) that communicates with the pressure regulating channel (115).

2. The valve port component (10) according to claim 1, characterized in that, The pressure regulating channel (115) includes a vertical channel section (117) and at least one horizontal channel section (118). The vertical channel section (117) extends along the height direction of the base (11). The top of the vertical channel section (117) is open. The vertical channel section (117) is adjacent to the protrusion (112). The horizontal channel section (118) communicates with the vertical channel section (117). One end of the horizontal channel section (118) away from the vertical channel section (117) communicates with the second air inlet (116).

3. The valve port component (10) according to claim 2, characterized in that, The number of the protrusions (112) is one, the protrusions (112) are annular protrusions, the first air inlet (113) is annular air inlet or arc-shaped air inlet, and the protrusions (112) are arranged around the vertical channel (117).

4. The valve port component (10) according to claim 3, characterized in that, The transverse channel portion (118) extends radially along the base (11) and communicates with the vertical channel portion (117); And / or, the number of the transverse channel portions (118) is multiple, and the multiple transverse channel portions (118) are evenly distributed along the circumference of the base (11).

5. The valve port component (10) according to any one of claims 1 to 4, characterized in that, The number of protrusions (112) is multiple, and the protrusions (112) are annular protrusions or arc-shaped protrusions. At least two of the protrusions (112) have different radii. Each protrusion (112) is provided with a first air inlet (113), and each first air inlet (113) is connected to the air outlet chamber (114).

6. The valve port component (10) according to claim 5, characterized in that, The pressure regulating channel (115) includes a central channel section (119) and an outer channel section (120), the outer channel section (120) being annular; The outer channel portion (120) is provided between two radially adjacent protrusions (112) of the base (11). The innermost protrusion (112) is arranged around the central channel portion (119). The second air inlet (116) is connected to the outermost outer channel portion (120). The two radially adjacent outer channel portions (120) of the base (11) are connected to each other. The central channel portion (119) is connected to the adjacent outer channel portion (120).

7. The valve port component (10) according to any one of claims 1 to 6, characterized in that, The protrusion (112) is constructed in a spiral shape, and the first air inlet (113) is spiral-shaped; The pressure regulating channel (115) is constructed as a spiral channel, and one end of the spiral channel away from the center of the base (11) is connected to the second air inlet (116).

8. The valve port component (10) according to any one of claims 1 to 7, characterized in that, There are multiple protrusions (112), which are arranged circumferentially along the base (11). Each protrusion (112) includes a first segment (1121), a second segment (1122), and a third segment (1123). The first segment (1121) and the third segment (1123) are both arc-shaped. The first segment (1121) is located around the third segment (1123), and the second segment (1122) is located around the base (1123). The first air inlet (113) extends radially and connects the first section (1121) and the third section (1123). The first air inlet (113) includes a first sub-section (1131), a second sub-section (1132) and a third sub-section (1133). The first sub-section (1131) is disposed in the first section (1121), the second sub-section (1132) is disposed in the second section (1122), and the third sub-section (1133) is disposed in the third section (1123).

9. The valve port component (10) according to claim 8, characterized in that, The pressure regulating channel (115) includes a central channel section (119) and a plurality of peripheral channel sections (120). A peripheral channel section (120) is provided between any two adjacent protrusions (112), and a plurality of third sections (1123) are arranged around the central channel section (119). The number of second air inlets (116) is equal to the number of peripheral channel portions (120), each second air inlet (116) is connected to one peripheral channel portion (120), and each peripheral channel portion (120) is connected to the central channel portion (119).

10. An electromagnetic proportional valve (1), characterized in that, include: Valve seat (40), the valve seat (40) having an air inlet passage (41) and an air outlet passage (42); Valve core (20); Magnetic component (30); Elastic element (50); The valve port component (10) according to any one of claims 1 to 9, wherein the base (11) is disposed inside the valve seat (40), the air outlet chamber (114) is connected to the air outlet channel (42), the second air inlet (116) is connected to the air inlet channel (41), the elastic element is configured to drive the valve core (20) to move in the direction of the valve port component (10), and the magnetic component (30) is configured to drive the valve core (20) to move away from the valve port component (10); The valve core (20) is configured to abut against the protrusion (112) to seal the first air inlet (113), and to separate from the protrusion (112) to keep the first air inlet (113) unobstructed. When the first air inlet (113) is sealed, the air inlet channel (41) and the air outlet channel (42) are blocked by the valve core (20) and the base (11). When the first air inlet (113) is unobstructed, the air inlet channel (41) is connected to the air outlet channel (42) through the air outlet chamber (114).

11. The electromagnetic proportional valve (1) according to claim 10, characterized in that, The electromagnetic proportional valve (1) further includes a support member (70), which is connected to the valve seat (40). The magnetic component (30) is sleeved on the outside of the support member (70), and the elastic element (50) is located between the support member (70) and the valve core (20).

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