阅读说明：本技术 阀组件 (Valve assembly ) 是由 不公告发明人 于 2019-01-30 设计创作，主要内容包括：一种阀组件,包括控制部、阀体、阀部件、定子组件,控制部包括电路板,阀部件包括阀座、阀芯以及转子组件,阀座形成有阀口,定子组件与电路板电连接,转子组件带动阀芯相对阀座轴向运动并能够调节阀口的开度,阀组件还包括传感器,至少部分传感器与阀体固定设置,传感器与电路板电连接和/或信号连接,电路板与ECU电连接和/或信号连接,有利于简化线束布置,阀组件相对集成。(A valve component comprises a control part, a valve body, a valve component and a stator component, wherein the control part comprises a circuit board, the valve component comprises a valve seat, a valve core and a rotor component, a valve port is formed in the valve seat, the stator component is electrically connected with the circuit board, the rotor component drives the valve core to axially move relative to the valve seat and can adjust the opening degree of the valve port, the valve component further comprises a sensor, at least part of the sensor is fixedly arranged with the valve body, the sensor is electrically connected and/or in signal connection with the circuit board, the circuit board is electrically connected and/or in signal connection with an.)

1. A valve assembly comprises a control part, a valve body, a valve component, a stator component and a sensor, wherein the control part comprises a circuit board, the valve component comprises a valve core and a rotor component, the valve assembly is provided with a valve port, the stator component is electrically connected with the circuit board, the stator component is sleeved on the periphery of the rotor component, the valve core can move relative to the valve port and adjust the opening degree of the valve port, and the valve assembly is characterized in that: the valve body comprises an inlet, an outlet and a first channel, the first channel is communicated with the inlet and the outlet through the valve port, the valve body further comprises a first mounting portion and a second mounting portion, the first mounting portion is provided with a first mounting cavity, the second mounting portion is provided with a second mounting cavity, the first mounting cavity is communicated with the first channel, the first mounting cavity and the second mounting cavity are located on different sides of the valve body, at least part of the valve component is accommodated in the first mounting cavity, at least part of the sensor is accommodated in the second mounting cavity, the sensor is electrically connected and/or in signal connection with the circuit board, the circuit board is electrically connected and/or in signal connection with the outside, and the sensor is electrically connected and/or in signal connection with the outside through the circuit board.

2. The valve assembly of claim 1, wherein: the valve body includes first lateral wall and second lateral wall, first lateral wall with the second lateral wall can be for setting up perpendicularly, the opening of first installation cavity is formed in first lateral wall, the opening of second installation cavity is formed in the second lateral wall, the second installation cavity than first installation cavity is closer to first passageway the export setting, the opening of import with the opening of export is located the different sides of valve body and not be first lateral wall with the second lateral wall.

3. The valve assembly of claim 1, wherein: the valve body further comprises a second inlet, a second outlet and a second channel, the second channel can be communicated with the second inlet and the second outlet, the second inlet and the second outlet are located on different sides of the valve body and are not located on the side where the first installation cavity and the second installation cavity are located, and the second installation cavity is communicated with the second channel.

4. A valve assembly according to any one of claims 1 to 3, wherein: the sensor comprises a body, an induction head and a connecting part, wherein the induction head is fixedly connected with one end of the body, the connecting part is fixedly connected with the other end of the body, one end of the connecting part is packaged in the body and is electrically connected with the induction head and/or is in signal connection, the other end of the connecting part is electrically connected with the circuit board and/or is in signal connection, and the induction head stretches into the second mounting cavity and is positioned in the second mounting cavity or the first channel or the second channel.

5. The valve assembly of claim 4, wherein: the control part still includes shell body, apron and first interface part, the shell body with the apron forms and fixed connection respectively, the shell body is formed with the control chamber, the circuit board set up in the control chamber, first interface part with the integrative injection moulding of shell body, first interface part includes first contact pin and third installation cavity, at least part first contact pin with the shell body is moulded plastics fixedly, the one end of first contact pin stretches into the control chamber with circuit board electricity is connected and/or signal connection, the other end of first contact pin stretches into third installation cavity is connected and/or signal connection with external electricity.

6. The valve assembly of claim 5, wherein: the outer shell and the stator module are welded and fixed, the outer shell is located on the outer side of the second installation cavity along the axis direction of the second installation cavity, the outer shell further comprises a first through hole, the control cavity is communicated with the first through hole, the first through hole is communicated with the second installation cavity, the valve assembly further comprises a fastening device, and the outer shell and the valve body are fixed through the fastening device.

7. The valve assembly of claim 6, wherein: the connecting part comprises an elastic element, the elastic element extends into the first through hole and is abutted to the conducting layer of the circuit board, the elastic element is electrically connected and/or in signal connection with the circuit board, the length of the elastic element between the circuit board and the body is smaller than that of the elastic element in a natural state, and at least part of the sensor is located in the control cavity.

8. The valve assembly of claim 6, wherein: the connecting part comprises a pin, the pin extends into the first through hole and is fixedly welded or matched with the circuit board in an inserting mode, the pin is electrically connected and/or connected with a signal of the circuit board, and at least part of the sensor is located in the control cavity.

9. The valve assembly of claim 5, wherein: the outer shell and the stator assembly are integrally formed in an injection molding mode, the outer shell is located at the upper end of the stator assembly along the axis direction of the stator assembly, the connecting portion comprises a connector, the control portion comprises a second interface portion, the second interface portion and the outer shell are integrally formed in an injection molding mode, the second interface portion comprises a second contact pin and a fourth mounting cavity, at least part of the second contact pin and the outer shell are fixedly connected in an injection molding mode, one end of the second contact pin is electrically connected and/or signal-connected with the circuit board, the other end of the second contact pin extends into the fourth mounting cavity to be electrically connected and/or signal-connected with the connector, the connector comprises a flat cable and a plug, one end of the flat cable is packaged in the body and is electrically connected and/or signal-connected with the sensor, and the other end of the flat cable is electrically connected and/or signal-connected with, the other end of the plug is electrically and/or signal-connected with the other end of the second contact pin extending into the fourth mounting cavity.

10. A valve assembly according to any one of claims 4 to 9, wherein: the body comprises a limiting part and a main body part, the main body part is closer to the connecting part than the limiting part, at least part of the limiting part protrudes out of the outer edge of the main body part, the limiting part comprises a limiting part side surface and a limiting part lower end surface, the second installation part comprises a matching part and a first step surface, the matching part comprises a matching surface, at least part of the limiting part side surface is jointed with the matching surface, at least part of the limiting part lower end surface is jointed with the first step surface, the valve component further comprises a first gland nut, the first gland nut is sleeved on the radial periphery of the main body part, the first gland nut is limited by the limiting part, the periphery of the first gland nut is provided with an external thread, the second installation part further comprises a first side part, the first side part is provided with an internal thread, and the first gland nut is in threaded connection with the first side part, the first compression nut compresses the limiting part on the first step surface.

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of fluid control components, in particular to a valve assembly.

[ background of the invention ]

In an automotive air conditioning system, in order to improve the flow Control accuracy of a working medium, an Electronic expansion valve is often used as a throttling element, a temperature and/or pressure sensor is mounted on the Electronic expansion valve, the sensor is directly and electrically connected with an Electronic Control Unit (ECU) through a wire harness, and the ECU calculates the superheat degree and controls the opening degree of the Electronic expansion valve according to a corresponding Control program after acquiring relevant parameters collected by the sensor.

[ summary of the invention ]

It is an object of the present invention to provide a valve assembly which facilitates simplified wiring harness routing.

In order to achieve the purpose, the invention adopts the following technical scheme:

a valve component comprises a control part, a valve body, a valve component, a stator component and a sensor, wherein the control part comprises a circuit board, the valve component comprises a valve core and a rotor component, the valve component is provided with a valve port, the stator component is electrically connected with the circuit board, the stator component is sleeved on the periphery of the rotor component, the valve core can move relative to the valve port and adjust the opening degree of the valve port, the valve body comprises an inlet, an outlet and a first channel, the first channel is communicated with the inlet and the outlet through the valve port, the valve body further comprises a first mounting part and a second mounting part, a first mounting cavity is formed on the first mounting part, a second mounting cavity is formed on the second mounting part, the first mounting cavity is communicated with the first channel, and the first mounting cavity and the second mounting cavity are positioned on different sides of the valve body, at least part of the valve component is accommodated in the first mounting cavity, at least part of the sensor is accommodated in the second mounting cavity, the sensor is electrically and/or signal-connected with the circuit board, the circuit board is electrically and/or signal-connected with the outside, and the sensor is electrically and/or signal-connected with the outside through the circuit board.

The valve assembly provided by the invention comprises a control part, a valve body and a sensor, wherein the control part comprises a circuit board, the sensor is fixedly arranged with the valve body, the sensor is electrically and/or signal-connected with the circuit board, the circuit board is electrically and/or signal-connected with the outside, and the sensor is electrically and/or signal-connected with the outside through the circuit board, so that the connecting wire harness is reduced, and the wire harness arrangement is simplified.

[ description of the drawings ]

FIG. 1 is a cross-sectional structural schematic of an embodiment of a valve assembly;

FIG. 2 is a schematic perspective view of the valve assembly of FIG. 1;

FIG. 3 is a cross-sectional structural view of the valve body of FIG. 1;

FIG. 4 is a perspective view of the valve body of FIG. 1;

FIG. 5 is a cross-sectional structural view of the valve member of FIG. 1;

FIG. 6 is a perspective view of the second compression nut of FIG. 1;

FIG. 7 is a schematic cross-sectional view of the control section of FIG. 1;

FIG. 8 is a cross-sectional view of the stator assembly of FIG. 1;

FIG. 9 is a schematic perspective view of the sensor of FIG. 1;

FIG. 10 is a perspective view of the outer housing of FIG. 7;

FIG. 11 is a cross-sectional structural view of a second embodiment of a valve assembly;

FIG. 12 is a cross-sectional structural view of the valve body of FIG. 11;

FIG. 13 is a cross-sectional structural view of the valve body of FIG. 11 in another orientation;

FIG. 14 is a cross-sectional structural view of a third embodiment of the valve assembly;

FIG. 15 is a cross-sectional structural view of a fourth embodiment of the valve assembly;

fig. 16 is a schematic perspective view of the sensor of fig. 15.

[ detailed description ] embodiments

The invention will be further described with reference to the following figures and specific examples:

referring to fig. 1 and 2, the valve assembly 100 includes a control portion 1, a valve body 2, a valve member 3, a stator assembly 4, and a sensor 5, wherein the valve member 3 is fixed to the valve body 1, the sensor 5 is fixed to the valve body 2, the stator assembly 4 is fixed to the control portion 1 and can be electrically connected and/or signal connected, the stator assembly 4 is sleeved on the periphery of the valve member 3, the stator assembly 4 is fixed to the valve body 2, the sensor 5 is electrically connected and/or signal connected to the control portion 1, and the control portion 1 is electrically connected and/or signal connected to the outside. The sensor 5 is mounted on the valve assembly 100, the sensor 5 is limited by the valve body 2, and a mechanical part for limiting the sensor 5 is not required to be separately arranged, so that the structure is simpler and more compact, meanwhile, the sensor 5 is electrically connected and/or signal-connected with the outside through the control part 1, and a wiring harness is not required to be separately arranged to directly electrically connect and/or signal-connect the sensor 5 and the ECU, so that the connection wiring harness is reduced, and the wiring harness arrangement is simplified.

Referring to fig. 3 and 4, the valve body 2 includes an inlet 21, an outlet 22, and a first passage 23 communicating the inlet 21 and the outlet 22; the valve body 2 further comprises a first mounting part 24 and a second mounting part 25, the first mounting part 24 surrounds to form a first mounting cavity 240, the second mounting part 25 surrounds to form a second mounting cavity 250, the first mounting cavity 240 is communicated with the first channel 23, the second mounting cavity 250 is communicated with the first channel 23, and the second mounting cavity 250 is closer to the outlet 22 of the first channel 23 than the first mounting cavity 240; the valve body 2 further comprises a first side wall 26 and a second side wall 27, the first side wall 26 and the second side wall 27 can be vertically arranged, an opening of the first mounting cavity 240 is formed in the first side wall 26, and an opening of the second mounting cavity 250 is formed in the second side wall 27; the opening of the outlet 22 and the opening of the inlet 21 are formed on different side walls of the valve body 2, respectively, and are not the first side wall 26 and the second side wall 27, which is favorable for avoiding interference, is favorable for miniaturization of the valve body 2, and improves the utilization rate of the valve body 2; the valve body 2 further comprises a second threaded hole 28, and the number of the second threaded holes 28 is at least two.

Referring to fig. 2, the valve assembly 100 further includes a pressure plate 6 and a fastening device 8, the stator assembly 4 is fixed to the pressure plate 6 by welding, the pressure plate 6 is fixed to the valve body 2 by the fastening device 8, in this embodiment, the fastening device 8 may be a screw, or may be a bolt or a buckle known in the art, and the pressure plate 6 is provided with a through hole, and the screw 8 is screwed through the through hole of the pressure plate 6 to cooperate with the second threaded hole 28 of the valve body 2, so as to fixedly connect the stator assembly 4 to the valve body 2.

Referring to fig. 5, the valve member 3 includes a valve core 32 and a rotor assembly 33, the valve assembly 100 has a valve port 310, the valve port 310 is located in the first channel 23, the valve core 32 can move and adjust the opening degree of the valve port 310, specifically, the valve core 32 can change the flow cross-sectional area of the first channel 23 at the valve port 310 by approaching or departing from the valve port 310, so as to form a throttling at the valve port 310; in this embodiment, the valve component 3 further includes a connecting member 34 and a sleeve 35, the sleeve 35 covers the radial outer periphery of the rotor assembly 33, a gap may exist between the inner peripheral surface of the sleeve 35 and the outer peripheral surface of the rotor assembly 33, the sleeve 35 and the connecting member 34 may be fixed by welding or assembling, the valve assembly 100 further includes a valve seat 31, the valve seat 31 is fixedly connected with the connecting member 34, that is, the connecting member 34 connects the sleeve 35 and the valve seat 31, which is beneficial to simplifying a mold, miniaturizing the mold, and meanwhile, facilitating the forming process of the valve seat, although the connecting member 34 may also be formed by integral injection molding with the valve; the connecting member 34 is provided with a flange portion 340, and the flange portion 340 includes an upper end surface 341 and a lower end surface 342, and defines the side where the upper end surface 341 faces the sleeve 35 and the side where the lower end surface 342 faces the valve seat 31.

Referring to fig. 1, at least a portion of the valve member 3 is received in the first mounting cavity 240, the valve member 3 is fixedly disposed with the first mounting portion 24, specifically, as shown in fig. 4, the first mounting portion 24 includes a second step surface 242, a third step surface 243, and a first side portion 244, the first side portion 244 is disposed closer to the opening of the first mounting cavity 240 than the second step surface 242, the second step surface 242 is disposed closer to the opening of the first mounting cavity 240 than the third step surface 243, and a surface of the first side portion 244 may be formed with a thread, which defines that a surface of the first side portion 244 is formed with an internal thread; the valve member 3 is accommodated in the first mounting cavity 240, the valve member 3 is limited by the second step surface 242, specifically, the lower end surface 342 of the flange portion 340 of the valve member 3 is attached to the second step surface 242, and the length of the valve seat 31 extending into the first mounting cavity 240 can be controlled by presetting the opening distance from the second step surface 242 to the first mounting cavity 240.

Referring to fig. 6, the valve assembly 100 further includes a second compression nut 9, the second compression nut 9 includes a third through hole 90, the outer circumferential surface of the second compression nut 9 may be formed with threads, the threads formed on the outer circumferential surface of the second compression nut 9 are defined as external threads matched with the first side 244, the second compression nut 9 is sleeved on the outer circumference of the valve component 3, and the second compression nut 9 is limited by the flange 340 of the valve component 3; referring to fig. 1, the second compression nut 9 is rotated, the external thread of the second compression nut 9 is in threaded connection with the internal thread of the first side portion 244, the second compression nut 9 compresses the flange portion 340 against the second step surface 242 of the valve body 2, and one end surface of the second compression nut 9 is attached to the upper end surface 341 of the flange portion 340, so as to ensure that the valve member 3 and the valve body 2 are relatively fixed; the valve assembly 100 further comprises a first sealing ring 7 and a second sealing ring 10, the first sealing ring 7 is arranged between the pressing plate 6 and the second compression nut 9, the first sealing ring 7 is sleeved on the radial periphery of the sleeve 35 or the connecting piece 34 of the valve component 3 and is in an elastic deformation state, the pressing plate 6 is fixedly connected with the valve body 2 through a screw 8, and meanwhile, the first sealing ring 7 is compressed between the pressing plate 6 and the second compression nut 9, so that the sealing performance between the valve component 3 and the valve body 2 is improved; the second seal ring 10 is disposed between the third step surface 243 of the first mounting portion 24 and the lower end surface 342 of the flange portion 340, and the distance between the second step surface 242 and the third step surface 243 can be set according to the size and sealing requirement of the second seal ring 10, so as to be beneficial to avoiding the situation that the sealing effect of the second seal ring 10 is poor due to too large or too small pressing force acting on the second seal ring 10, and the provision of the second seal ring 10 is beneficial to enhancing the sealing between the first mounting portion 24 and the valve member 3, reducing the risk of leakage of the working medium, and thus being beneficial to improving the sealing performance of the valve assembly.

Referring to fig. 1 and 7, the control portion 1 includes a circuit board 11, an outer housing 12, and a cover plate 13, where the outer housing 12 and the cover plate 13 are respectively formed and fixedly connected, and in this embodiment, the outer housing 12 is formed with a control cavity 121, the control cavity 121 is communicated with a second mounting cavity 250, specifically, the outer housing 12 is provided with a first through hole 122, the control cavity 121 is communicated with the second mounting cavity 250 of the valve body 2 through the first through hole 122, and the circuit board 11 is mounted in the control cavity 121; the control part 1 further comprises a first interface part 14, the valve assembly 100 is electrically and/or signal-connected with the ECU through the first interface part 14, the first interface part 14 and the outer shell 12 are integrally formed by injection molding, the first interface part 14 can be arranged at different positions of the outer shell 12 according to the requirement of practical application, the first interface part 14 comprises a first pin 141 and a third mounting cavity 142, the first pin 141 is arranged in the third mounting cavity 142 and at least partially arranged in the third mounting cavity 142, specifically, the first pin 141 and the outer shell 12 are fixed by injection molding, the middle part of at least part of the first pin 141 and the outer shell 12 are fixed by injection molding, one end of the first pin 141 extends into the control cavity 121, the other end of the first pin 141 extends into the third mounting cavity 142, one end of the first pin 141 extending into the control cavity 121 and is inserted into or welded and fixed with the circuit board 11 and can be electrically and/or signal-connected, one end of the first pin 141 extending into the third mounting cavity 142 is electrically and/or signal connected to the ECU.

Referring to fig. 8, the stator assembly 4 includes a cover 41 and a stator 42, the stator 42 is used as an injection insert, the cover 41 is integrally injection molded, the cover 41 and the stator 42 surround to form a hollow cavity 43, the stator assembly 4 is sleeved on the periphery of the rotor assembly 33 of the valve component 3 through the hollow cavity 43, specifically, the stator 42 includes a coil winding 421 and a third pin 422, the cover 41 is integrally injection molded by using the coil winding 421 and the third pin 422 as the injection insert, one end of the third pin 422 is disposed in the cover 41 and electrically connected and/or signal-connected to the coil winding 421, the other end of the third pin 422 is disposed outside the cover 41, and is inserted or welded and fixed to the circuit board 11 in the control portion 1 and can be electrically connected and/or signal-connected; in this embodiment, the cover 41 further includes a welding portion 411, and the stator assembly 4 is fixed to the outer casing 12 of the control portion 1 by ultrasonic welding through the welding portion 411, but the stator assembly 4 and the outer casing 12 may also be formed by integral injection molding; outer housing 12 is located outside second mounting cavity 250 in the axial direction of second mounting cavity 250.

Referring to fig. 1 and 9, the sensor 5 includes a body 51, a sensing head 52 and a connecting portion 53, the sensing head 52 is fixedly connected to one end of the body 51, the sensing head 52 extends into the second mounting cavity 250 and is located in the second mounting cavity 250 or the first passage 23, the sensing head 52 is closer to the outlet 22 of the valve body 2 than the valve seat 31, and the sensing head 52 can sense relevant parameters of the working medium in the first passage 23 or the second mounting cavity 250, such as the temperature and/or pressure of the working medium; the connecting portion 53 is fixedly connected to the other end of the body 51, the circuit board 11 is electrically and/or signal-connected to the sensor 5 through the connecting portion 53, specifically, one end of the connecting portion 53 is encapsulated in the body 51 and is electrically and/or signal-connected to the inductive head 52, the other end of the connecting portion 53 is exposed outside the body 51 and extends into the first through hole 122 of the outer housing 12 to be electrically and/or signal-connected to the circuit board 11, and since the circuit board 11 is disposed in the control cavity 121, at least a portion of the sensor 5 is located in the control cavity 112.

In this embodiment, the connection portion 53 includes an elastic element, such as a spring, a resilient sheet, a leaf spring, etc., and the connection portion 53 is used as a spring for explanation, after the sensor 5 is fixed to the second mounting portion 25 of the valve body 2, the spring is compressed and deformed by the circuit board 11 and the body 51 of the sensor 5, and the spring is elastically deformed, or the length of the spring between the circuit board 11 and the body 51 is smaller than the length of the elastic element in a natural state, which is beneficial for reliable contact between the spring and the circuit board 11, one end of the spring exposed out of the body 51 is abutted to the conductive layer of the circuit board 11 and can be electrically and/or signal connected, and welding is relatively reduced, which is beneficial for simplifying an assembly process, and the other end of the spring is packaged in the body.

Referring to fig. 9, the body 51 of the sensor 5 further includes a limiting portion 511 and a body 512, the body 512 is disposed closer to the connecting portion 53 than the limiting portion 511, in this embodiment, at least a portion of the limiting portion 511 protrudes from the outer edge of the body 512, the limiting portion 511 may be a non-rotating body, the limiting portion 511 includes a limiting portion side 5111, a limiting portion upper end 5112 and a limiting portion lower end 5113, which define that the limiting portion upper end 5112 faces the connecting portion 53, the limiting portion lower end 5113 faces the sensing head 52, the limiting portion side 5111 is distributed along the circumferential direction of the limiting portion 511, the limiting portion side 5111 includes an arc surface and a flat surface, when the limiting portion 511 is located in the second mounting cavity 250 of the valve body 2, the limiting portion 511 is a non-rotating body, the sensor 5 cannot rotate, the structure of the limiting portion 511 may be various, as long as the limiting portion can prevent the sensor 5 from rotating, for example, the limiting portion, oval or other shapes.

Referring to fig. 4, correspondingly, the second mounting portion 25 of the valve body 2 is formed with an engaging portion 251 engaged with the stopper portion 511, the engaging portion 251 includes an engaging surface 2511, the second mounting portion 25 further includes a first step surface 253 and a fourth step surface 254, the engaging portion 251 is disposed closer to the opening of the second mounting chamber 250 than the first step surface 253 along the axial direction of the second mounting chamber 250, and the first step surface 253 is disposed closer to the opening of the second mounting chamber 250 than the fourth step surface 254; the sensor 5 is accommodated in the second mounting cavity 250, at least part of the sensor 5 is accommodated in the second mounting cavity 250, specifically, a side face 5111 of the limiting part 511 is attached to a matching face 2511 of the matching part 251, at least part of the side face 5111 of the limiting part is attached to the matching face 2511, a lower end face 5113 of the limiting part 511 is attached to the first step face 253, at least part of the lower end face 5113 of the limiting part is attached to the first step face 253, and the length of the sensor 5 extending into the second mounting cavity 250 can be controlled by presetting the opening distance from the first step face 253 to the second mounting cavity 250; the second mounting portion 25 further includes a second side portion 255, the second side portion 255 is disposed closer to the opening of the second mounting cavity 250 than the mating portion 251 is, along the axial direction of the second mounting cavity 250, and the surface of the second side portion 255 may be formed with a thread, and the thread formed on the surface of the second side portion 255 is defined as an internal thread.

Referring to fig. 1, the valve assembly 100 further includes a first compression nut 101, the first compression nut 101 is sleeved on the radial periphery of the main body 512 of the sensor 5, the first compression nut 101 is limited by a limiting portion 511 of the sensor 5, the periphery of the second compression nut 101 is formed with threads, the threads formed on the outer peripheral surface of the second compression nut 101 are defined as external threads matched with the second side 255 of the valve body 2, the second compression nut 101 is rotated, the external threads of the second compression nut 101 are in threaded connection with the internal threads of the second side 255, the second compression nut 101 compresses the limiting portion 511 against the first step surface 253 of the second mounting portion 25, one end surface of the second compression nut 101 abuts against an upper end surface 5112 of the limiting portion 511, and the sensor 5 and the valve body 2 are ensured to be relatively fixed; the valve assembly 100 further comprises a third sealing ring 102, the third sealing ring 102 is arranged between the fourth step surface 254 of the second mounting portion 25 and the lower end face 5113 of the limiting portion 511, the distance between the first step surface 253 and the fourth step surface 254 can be set according to the size and the sealing requirement of the third sealing ring 102, the situation that the sealing effect of the third sealing ring 102 is poor due to too large or too small pressing force acting on the third sealing ring 102 is avoided, the third sealing ring 102 is arranged to enhance the sealing between the second mounting portion 25 and the sensor 5, the risk of leakage of a working medium is reduced, and therefore the sealing performance of the valve assembly is improved.

Referring to fig. 10, in the present embodiment, the outer casing 12 of the control part 1 further includes a first groove 123 and a second through hole 124, the number of the second through holes 124 is at least two, and the number of the second through holes 124 is four in the present embodiment; correspondingly, with reference to fig. 4, the second side wall 27 is provided with an equal number of first threaded holes 29 as the second through holes 124; referring to fig. 1, the valve assembly 100 further includes a fourth sealing ring 103, at least a portion of the fourth sealing ring 103 is disposed in the first groove 123 of the outer housing 12, the screw 8 penetrates through the second through hole 124 of the outer housing 12 and is screwed in cooperation with the first threaded hole 29 on the second side wall 27 of the valve body 2, so as to fixedly connect the outer housing 12 and the valve body 2, and meanwhile, the fourth sealing ring 103 is pressed between the first groove 123 and the second side wall 27 of the valve body 2, which is beneficial to improving the sealing performance between the control portion 1 and the valve body 2, reducing the leakage of the working medium to the outside of the valve assembly 100, or allowing the external medium to enter the inside of the valve assembly 100, which is beneficial to improving the external sealing performance of the valve assembly 100, the sensor 5 is partially accommodated in the second installation cavity 250 of the valve body 2, partially accommodated in the control.

Referring to fig. 11 to 13, the technical solution of the second embodiment is mainly different from that of the first embodiment in that: the valve body 2 further comprises a second inlet 201, a second outlet 202 and a second channel 203, the second inlet 201 and the second outlet 202 may be located on different sides of the valve body 2, in this embodiment, the inlet 21, the outlet 22, the second inlet 201 and the second outlet 202 are respectively located on different sides of the valve body 2, and are not located on the first mounting cavity 240 and the second mounting cavity 250, specifically, not located on the first side wall 26 and the second side wall 27; of course, as other embodiments, the inlet 21 and the second outlet 202 may be located on the same side of the valve body 2, and the second inlet 203 and the outlet 22 may be located on the same side of the valve body 2; the second channel 203 is communicated with the second inlet 201 and the second outlet 202, the second installation cavity 250 is communicated with the second channel 203, at least part of the sensor 5 is accommodated in the second installation cavity 250, and the sensing head 52 of the sensor 5 extends into the second installation cavity and is positioned in the second installation cavity 250 or the second channel 203.

Referring to fig. 14, the main difference between the third embodiment and the first embodiment is that: the connecting portion 53 of the sensor 5 includes a pin, one end of the pin is packaged in the body 51 and is electrically connected and/or signal connected with the sensor head 52, the other end of the pin is exposed outside the body 51 and extends into the first through hole 122 to be welded, fixed or inserted and matched with the circuit board 11, and can be electrically connected and/or signal connected, the circuit board 11 is disposed in the control cavity 121, and at least part of the sensor is located in the control cavity 112.

Referring to fig. 15 to 16, the technical solution of the fourth embodiment is mainly different from that of the first embodiment in that: in the first embodiment, the connecting portion 53 of the sensor 5 includes an elastic element, and the sensor 5 and the circuit board 11 are directly abutted through the elastic element to realize electric connection and/or signal connection; in a third embodiment, the connection portion 53 'of the sensor 5' comprises a connector, and the sensor 5 'is electrically and/or signal-connected to the circuit board 11' via the connector.

Referring to fig. 15, in the present embodiment, the stator assembly 4' is integrally injection molded with the outer casing 12' of the control portion 1', and of course, the stator assembly 4' and the outer casing 12' may be fixed in an assembling manner, where along the axial direction of the stator assembly 4', the outer casing 12' is located at the upper end of the stator assembly 4', and defines that one end of the stator assembly 4' away from the valve body 2 is an upper end, and one end of the stator assembly close to the valve body 2 is a lower end; the control part 1 'further comprises a second interface part 15, the second interface part 15 and the outer shell 12' of the control part 1 'are integrally injection molded, according to the requirement of practical application, the second interface part 15 can be arranged at different positions of the outer shell 12', the second interface part 15 comprises a second pin 151 and a fourth mounting cavity 152, the second pin 151 is at least partially arranged in the fourth mounting cavity 152, specifically, the middle part of at least part of the second pin 151 is fixed with the outer shell 12 'by injection molding, one end of the second pin 151 extends into the control cavity 121', the other end of the second pin 151 extends into the fourth mounting cavity 152, one end of the second pin 151 extending into the control cavity 121 'is in plug fit or welded fixation with the circuit board 11' and can be electrically connected and/or signal connected, one end of the second pin 151 extending into the fourth mounting cavity 152 is in plug fit with the connector and can be electrically connected and/or signal connected, specifically, referring to fig. 16, the connector includes a plug 531 'and a flat cable 532', one end of the flat cable 532 'is enclosed in the body 51' of the sensor 5 'and is electrically and/or signal-connected with the sensor 52', the other end of the flat cable 532 'is exposed out of the body 51' and is electrically and/or signal-connected with one end of the plug 531', and the other end of the plug 531' is inserted and matched with the other end of the second pin 151 extending into the fourth mounting cavity 152 and can be electrically and/or signal-connected.

It should be noted that: although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the present invention may be modified and equivalents may be substituted for those skilled in the art, and all technical solutions and modifications that do not depart from the spirit and scope of the present invention should be covered by the claims of the present invention.