CN110735958A - electronic expansion valve and thermal management assembly - Google Patents
electronic expansion valve and thermal management assembly Download PDFInfo
- Publication number
- CN110735958A CN110735958A CN201810801389.8A CN201810801389A CN110735958A CN 110735958 A CN110735958 A CN 110735958A CN 201810801389 A CN201810801389 A CN 201810801389A CN 110735958 A CN110735958 A CN 110735958A
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- China
- Prior art keywords
- valve body
- electronic expansion
- expansion valve
- cavity
- groove
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
Abstract
The electronic expansion valve comprises a valve body, a valve component, a sensor and a control part, wherein the valve body comprises an th mounting part and a second mounting part, the valve component is arranged on a th mounting part, the control part is provided with a control cavity, the sensor is positioned on the second mounting part and the control cavity, a th sealing element is arranged between the control part and the valve body, and a th sealing element is arranged around the periphery of the control cavity, so that the sealing performance of the electronic expansion valve is improved.
Description
Technical Field
The invention relates to the technical field of fluid control, in particular to electronic expansion valves and a thermal management assembly.
Background
The electronic expansion valve is provided with an electric control board, and in order to ensure the working performance of the electric control board, the working environment of the electric control board needs to be sealed, so that the sealing performance of a control cavity where the electric control board of the electronic expansion valve is located is technical problems.
Disclosure of Invention
The invention aims to provide electronic expansion valves and a thermal management system, which are beneficial to improving the sealing performance of a control cavity of an electronic control board of the electronic expansion valve.
an electronic expansion valve, comprising a valve body, a valve member, a control portion and a sensor, wherein the valve body comprises a th mounting portion and a second mounting portion, the valve body has a th channel and a second channel, the th channel is not communicated with the second channel, the th mounting portion has a th cavity, the second mounting portion has a second cavity, the th cavity can be communicated with the th channel, the second cavity is communicated with the second channel, an opening of the th cavity and an opening of the second cavity are located on the same side of the valve body, an opening of the th cavity and an opening of the second cavity are located on the th sidewall of the valve body, the valve member is fixedly connected with the second mounting portion, the sensor is fixed to the second mounting portion, the sensor is in signal connection with the electronic control board, the control portion comprises a cover body, an electronic control board, a mouthpiece and a stator assembly, the mouthpiece is fixed to the cover body by injection molding, the electronic expansion valve member is electrically connected with the outside and/or in signal connection with the mounting portion, the control portion comprises a control board 8945, and the seal is located around the second cavity, and the electronic expansion valve body is arranged around the control portion, the seal component, and the control portion, the seal portion is arranged around the seal , and the seal portion, and the seal.
heat management assembly comprising an electronic expansion valve and a heat exchanger, the electronic expansion valve being fixedly connected to the heat exchanger, the electronic expansion valve comprising a valve body, a valve member, a control portion and a sensor, the valve body comprising a mounting portion and a second mounting portion, the valve body having a th passage and a second passage, the th passage not communicating with the second passage, the th mounting portion having a th chamber, the second mounting portion having a second chamber, the th chamber being capable of communicating with the th passage, the second chamber communicating with the second passage, the opening of the st chamber and the opening of the second chamber being located on the same side of the valve body, the opening of the th chamber and the opening of the second chamber being located on the th side wall of the valve body, the valve member being fixedly connected to the second mounting portion, the sensor being fixed to the second mounting portion, the sensor being in signal connection with the control panel, the control portion comprising an inlet port 465, an inlet port control housing, an outlet port control housing, an inlet port control 465, an inlet port control housing, an outlet port control 465, an inlet port control housing, an inlet port control heat exchanger, an outlet port control 465, and an outlet port control housing, wherein the heat exchanger housing is electrically connected to the heat exchanger 465, the housing is connected to the housing, and the housing, the housing is connected to the heat exchanger 465, the housing is connected to the housing, the housing inlet port control housing is connected to the housing 465, the housing is connected to the housing, the housing inlet port control housing is connected to the housing, the housing is connected to the.
The thermal management assembly comprises an electronic expansion valve, the electronic expansion valve comprises a valve body, a valve component, a sensor, a control part and an th sealing element, the th sealing element is arranged on the periphery of a second cavity, the th sealing element is tightly pressed between the cover body and the valve body, the second cavity corresponds to the control cavity, and in order to prevent external water and other media from entering the control cavity through the second cavity and affecting the working performance of the circuit board, the th sealing element is arranged on the periphery of the control cavity, so that the sealing performance of the control cavity where an electronic control board of the electronic expansion valve is located is improved.
Drawings
FIG. 1 is a schematic block diagram of embodiments of a refrigeration system;
FIG. 2 is a schematic structural diagram of embodiments of a thermal management assembly;
FIG. 3 is a schematic view of an -direction perspective structure of the electronic expansion valve in the present embodiment;
fig. 4 is another -direction perspective view of the electronic expansion valve in the present embodiment;
FIG. 5 is a schematic cross-sectional view taken along line B-B of the electronic expansion valve of FIG. 3;
FIG. 6 is a schematic cross-sectional view of the electronic expansion valve of FIG. 4 taken along the line C-C;
FIG. 7 is a schematic cross-sectional view taken along the line A-A of the electronic expansion valve of FIG. 3;
FIG. 8 is an enlarged view of a portion of the structure of the portion D in FIG. 7;
FIG. 9 is a perspective view of the valve body of FIG. 3;
FIG. 10 is a schematic perspective view of the sensor of FIG. 6;
fig. 11 is a schematic view of an assembly step for an electronic expansion valve;
FIG. 12 is a schematic view of a second step of assembling the electronic expansion valve;
fig. 13 is a schematic view of a third assembly step of the electronic expansion valve;
fig. 14 is a schematic cross-sectional view of another embodiment of an electronic expansion valve.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The invention is further described with reference to the drawings and the detailed description:
fig. 1 is a schematic block diagram of embodiments of a refrigeration system, in this embodiment, the refrigeration system includes an air conditioning system and a battery cooling system, the air conditioning system includes a compressor 100, a condenser 200, a electronic expansion valve 1 and an evaporator 300, when the air conditioning system is in operation, a refrigerant is compressed into a high-temperature and high-pressure refrigerant by the compressor 100, the high-temperature and high-pressure refrigerant is cooled by the condenser 200 to become a normal-temperature and high-pressure refrigerant, the normal-temperature and high-pressure refrigerant enters the evaporator 300 by the electronic expansion valve 1, the pressure of the normal-temperature and high-pressure refrigerant is reduced by the electronic expansion valve 1, the refrigerant is vaporized to become a low-temperature refrigerant, the low-temperature refrigerant absorbs a large amount of heat by the evaporator 300 to become the refrigerant, and the refrigerant returns to the compressor 100, the battery cooling system includes a thermal management component.
Fig. 2 is a schematic structural diagram of specific embodiments of a thermal management assembly, in this embodiment, a thermal management assembly 400 includes a heat exchanger 500 and a second electronic expansion valve 2, the heat exchanger 500 and the second electronic expansion valve 2 are integrated into units, and a refrigerant in an air conditioning system exchanges heat with a working medium of a battery cooling system in the heat exchanger 500, in this embodiment, the structure of the -th electronic expansion valve 1 is the same as that of the second electronic expansion valve 2, and the -th electronic expansion valve 1 and the second electronic expansion valve 2 are collectively described as electronic expansion valves hereinafter, of course, the structures of the -th electronic expansion valve and the second electronic expansion valve may be different, or the battery cooling system does not use an electronic expansion valve, as long as between the -th electronic expansion valve and the second electronic expansion valve is the same as that of the electronic expansion valve of the present invention.
Referring to fig. 3 to 6, the electronic expansion valve 1 includes a control portion 10, a valve body 20, a valve member 40 and a sensor 50, wherein the valve member 40 is fixed to the valve body 20, the sensor 50 is electrically connected to the control portion 10, the sensor 50 is fixed to the valve body 20, and the control portion 10 is fixed to the valve body 20, in this embodiment, the control portion 10 is fixed to the valve body 20 by a screw 70, and may also be fixed by a snap fit or an adhesive bond, such that the sensor 50 is integrated to the electronic expansion valve 1, and a mechanical connection portion for limiting the sensor is not required to be separately provided by the valve body 20 limiting the sensor 50, such that the structure is simpler, and the sensor is connected to the control portion 10 by using a pin of the sensor, and a wire harness is not required to be separately provided to transmit a signal of the sensor to the controller.
Referring to fig. 5 to 6, the valve body 20 includes a th inlet 21, a th outlet 23, and a th passage 27, wherein the th inlet 21 and the th outlet 23 can communicate through a rd passage 27, the valve body 20 further includes a second inlet 22, a second outlet 24, and a second passage 28, the second inlet 22 and the second outlet 24 can communicate through the second passage 28, and the th passage 27 communicates with the second passage 28. in conjunction with fig. 3 and 4, the th inlet 21 and the second outlet 24 are disposed on the same side of the valve body 20, and the second inlet 22 and the th outlet 23 are disposed on the same another side of the valve body 20, so that the electronic expansion valve is integrated or assembled with the heat exchanger such that the outlet 23 of the electronic expansion valve is connected with the inlet of the heat exchanger 500, the outlet of the heat exchanger is connected with the second inlet 22 of the electronic expansion valve, so that the heat exchanger is mounted corresponding to the electronic expansion valve, and further, the th inlet 21, the second inlet th outlet 23 and the second outlet 24 of the electronic expansion valve body can be disposed on the same side of the electronic expansion valve body 20, and the working fluid can be disposed on the same side of the heat exchanger 20, and the working fluid of the heat exchanger can be disposed on the same side of the same working.
Referring to fig. 9, the valve body 20 further includes a mounting portion 25 and a second mounting portion 26, the mounting portion 25 has a 0 cavity 250, the second mounting portion 26 has a second cavity 260, the st cavity 250 can communicate with the nd channel 27, the second cavity 260 communicates with the second channel 28, the valve body 20 includes a th side wall 204, an opening of the th cavity 250 and an opening of the second cavity 260 are formed in the th side wall 204, or the th side wall is formed with the th cavity 250 and the second cavity 260, or an opening of the th cavity and an opening of the second cavity are formed in the th side wall, or an opening of the th cavity and an opening of the second cavity are formed in the same side of the valve body, so in this embodiment, the th inlet 21 and the second outlet 24 are located in the same side of the valve body 20, the second inlet 22 and the 6 th outlet 23 are located in the same side of the valve body 20, the opening of the th cavity 250 and the second cavity 250 are located in the same side of the valve body, which is beneficial to improve the utilization rate of the valve body and the valve body, so as well as to improve the miniaturization of the.
Referring to fig. 7, the valve component 40 includes a valve seat 41, a valve core 42, and a rotor assembly 43, the rotor assembly 43 can drive the valve core 42 to move the valve core 42 relative to the valve seat 41, the valve seat 41 has a valve port 44, the valve port 44 is connected to the -th channel 27 located on both sides of the valve port 44, the valve core 42 can change the flow cross-sectional area of the -th channel at the valve port 44 by approaching and departing from the valve port 44, and thus can form a throttle at the valve port 44.
In this embodiment, the valve component 40 further includes a connecting member 45 and a sleeve 46, the sleeve 46 covers the periphery of the rotor assembly 43, the sleeve 46 is welded and fixed with the connecting member 45, and the valve seat 41 is fixedly connected with the connecting member 45, that is, the sleeve 46 and the valve seat 41 are connected through the connecting member 45, which is beneficial to simplifying a mold, miniaturizing the mold, and facilitating the forming of the valve seat, and certainly, the connecting member 45 can also be formed with the valve seat 41 , so that the connecting arrangement between the two is not required.
In this embodiment, the connecting member 45 is formed with a flange portion 411, and the flange portion 411 includes two surfaces, i.e., a lower end surface 413 of the flange portion and an upper end surface 412 of the flange portion, respectively, the upper end surface 412 of the flange portion faces the side of the sleeve 46, and the lower end surface 413 of the flange portion faces the side of the valve body 20.
At least part of the valve member 40 is accommodated in the first cavity 250, and the valve member 40 is fixedly arranged with the mounting portion 25. specifically, referring to fig. 9, the 0 th mounting portion 25 includes a 1 nd step surface 252 and a 2 nd side portion 253, the 4 th side portion 253 is arranged closer to the outer side of the valve body than the 5 nd step surface 252 along the axial direction of the 3 th mounting portion 25, the th step surface 252 is substantially perpendicular to the axial direction of the main body portion of the th mounting portion 25, the th side portion 253 is parallel to the axial direction of the main body portion of the th mounting portion 25, the main body portion of the th mounting portion 25 is a portion formed with a nd cavity, the th side portion 253 is formed with a thread on the surface, and the thread defining the surface formation of the th side portion 253 is.
Referring to fig. 7, 9 and 12, the lower end face 413 of the flange abuts against the -th step face 252, and the distance from the -th step face 252 to the outer side face of the valve body 20, on which the opening of the 0-th chamber is formed, is preset, so that the length of the valve seat 41 entering the 1-th chamber 250 can be controlled, the electronic expansion valve 1 further includes a 2-th compression nut 641, a 3-th compression nut 641 having a 4-th through hole 6411, an 5-th compression nut having threads formed on the outer periphery thereof, a -th compression nut having threads formed on the outer periphery thereof being defined as male threads 6412, a sleeve 46 passing through the -th through hole 6411, a -th compression nut 641 disposed on the outer periphery of the connecting member 45, a lower end face of the -th compression nut abutting against the upper end face 412 of the flange, the -th compression nut being rotated, the male threads of the -th compression nut acting on the female threads of the side portion 253 of the -th compression nut, the compressing the valve body 20, and fixing the valve member 641.
The electronic expansion valve 1 further comprises a second sealing member 540, the mounting part 250 of the valve body 20 further comprises a second step surface 251, the second step surface 251 is substantially parallel to the step surface 252, and the second step surface 251 is far away from the side wall 204 of the second 1 relative to the 0 step surface 252, i.e. the second step surface 251 is arranged closer to the bottom of the chamber 250 than the step surface 252, the second sealing member 540 is arranged between the second step surface 251 and the lower end surface 413 of the flange part, the distance between the step surface 252 and the second step surface 251 can be arranged according to the size and sealing requirements of the second sealing member 540, so as to avoid the situation that the pressing force acting on the second sealing member 540 is too large or too small, which results in poor sealing effect of the second sealing member 540, so as to enhance the sealing between the mounting part 25 and the 82940, reduce the risk of leakage of working medium, thereby improving the sealing performance of the electronic expansion valve, or alternatively, the mounting surface 252 is provided with a second groove 540, the second sealing member is provided with a second sealing member , the second sealing member sealing surface 252 and the lower end surface of the sealing member sealing groove , so as to enhance the sealing member sealing force, so as to reduce the sealing member sealing depth, thereby reduce the risk of the sealing member sealing surface sealing member sealing surface contact between the sealing groove 48325, and the sealing groove, and the sealing member sealing groove of the sealing member mounting part sealing member mounting groove, and reduce the sealing member mounting.
Referring to fig. 7 to 11, the control portion 10 includes a housing 11, an electronic control board 12 and a stator assembly 13, the electronic control board 12 is electrically and/or signal-connected to the stator assembly 13, the control portion 10 has a control cavity 112, the housing 11 forms at least a portion of the control cavity 112, the control cavity 112 is disposed in communication with the second cavity, the electronic control board 12 is installed in the control cavity 112, the electronic control board 12 can output a control signal to the stator assembly 13 or transmit the control signal to the stator assembly 13, the housing 11 and the stator assembly 13 are integrated by injection molding , specifically, the stator assembly 13 includes a coil and a second pin 119, the stator assembly 13 is electrically and/or signal-connected to the electronic control board 12 through a second pin 119 0 pin 119, the housing 11 is injection-molded by 1 and the like, the housing 11 is formed by injection molding, an 853 end of the pin 119 of the pin 119 is sealed to the housing 11, an other 965 end of the 119 is exposed from the housing 11, an end of the first pin 119 exposed out of the housing 11, an end of the second pin 119, the housing 34, the housing 11 is fixedly connected to the housing 12 and electrically and/or electrically connected to the socket 116, the socket 115 is electrically and the socket 116, the socket 115, the socket 116 is electrically and the socket 116, the socket 116 is electrically connected to the socket 116, the socket 115, the socket 116 is electrically connected to the socket 115, the socket 116 is connected to the socket 115, the socket 116 is connected to the socket 116, the socket 115, the socket 116 is connected to the socket 115, the socket 116, the socket 115, the socket 116 is connected to the socket 116, the socket 115, the socket 116 is fixed to the socket 115, the socket 116, the socket 115.
Referring to fig. 7, 8, 11 and 14, along the axial direction of the second mounting portion 26, the opening direction of the second chamber 260 is defined as up, the direction opposite to the opening direction of the second chamber 260 is defined as down, the side above the electronic control board 12 is the side 123 of the electronic control board, and the side 0 opposite to the side 123 of the electronic control board is the second side 124 of the electronic control board, or along the axial direction of the second mounting portion 26, the second side 124 of the electronic control board is closer to the th side wall 204 than the 1 side 123 of the electronic control board, it can be understood that the electronic component of the electronic control board 12 is disposed on the th side of the electronic control board or the second side 8655 of the electronic control board, along the axial direction of the second mounting portion 26, at least a portion of the electronic control board 12 is disposed between the second mounting portion 26 and the cover 11, or that the th side 123 of the electronic control board faces the inner wall 113 of the cover portion, the second side 124 of the electronic control board faces the side wall mounting portion 204 of the second mounting portion 26 and the sensor 50, or between the electronic control board 12 and the cover 119, or the electronic control board 119, the electronic control board is disposed opposite to the side wall of the housing 116, the electronic control board 119, the electronic control board is disposed opposite to the side wall of the electronic control board 119, the housing 116, the electronic control board 119, the electronic.
In this technical scheme, sensor 50 and valve body 20 are fixed to be set up, and sensor 50 is fixed with second installation department 26, and some sensor 50 stretch into second chamber 260.
In the technical scheme, the sensor 50 comprises a body 51, a sensing head 52 and a connecting part 53, the sensing head 52 is fixedly arranged with the body 51, the sensing head 52 is positioned in the second channel 28 or the second chamber 260, the sensing head 52 can sense relevant parameters of a working medium in the second channel 28 or the second chamber 260, such as the temperature and/or the pressure of the working medium, the electronic control board 12 is electrically and/or signal-connected with the sensor 50 through the connecting part 53, the end of the connecting part 53 is exposed out of the end of the body and is arranged at the second end of the sensing head 52, the end of the body 51 and the second end of the body are positioned at different ends of the body, the end of the connecting part 53 is sealed in the body 51 and is electrically and/or signal-connected with the sensing head 52, the other end of the connecting part 53 is exposed out of the body 51 and is electrically and/or signal-connected with the electronic control board 12, and since the electronic control board 12 is arranged in the control chamber 112.
Referring to fig. 8, the second surface 124 of the electronic control board is provided with a th abutting part 121, the th abutting part 121 comprises a conductive layer formed on the second surface 124 of the electronic control board, wherein the conductive layer can be processed by tin plating, electroless nickel plating, immersion gold and the like, or a conductive metal sheet fixedly connected with the electronic control board, the th abutting part 121 is electrically connected with a circuit of the electronic control board, the connecting part 53 of the sensor is abutted against the th abutting part 121 and can be electrically connected or/and signal connected, or the connecting part 53 is fixedly connected with the th abutting part and is electrically connected or/and signal connected, the sensor 50 thus arranged is abutted against the electronic control board 12 through the th abutting part 121, no plug hole is required to be arranged on the electronic control board 12, the arrangement of an electric component on the th surface of the electronic control board is facilitated, the utilization rate of the th surface of the electronic control board is improved.
Specifically, in the present embodiment, the sensor includes five connection portions 53, which is advantageous for improving the connection reliability between the connection portions and the electronic control board, the sensor 50 further includes a conductive plate 54, the conductive plate 54 is made of a conductive material, the conductive plate 54 is packaged in the body 51, the end of the connection portion 53 is fixedly connected to the conductive plate 54, and includes surface-to-surface contact welding, post-insertion welding, or interference insertion fixing and electrical connection and/or signal connection, the sensor head 52 is fixedly connected to the conductive plate 54 by welding or insertion, and the connection portion 53 is electrically connected to and/or signal connected to the sensor head 52 through the conductive plate 54, so as to provide support for the connection portion and the sensor head through the conductive plate.
In this embodiment, the connection portion 53 is an elastic element, such as a spring, a spring sheet, a leaf spring, etc., in this embodiment, the connection portion 53 is a spring, after the connection portion 53 is fixed, the connection portion 53 is compressed and deformed by the electronic control board 12 and the conductive element 54, the connection portion 53 is elastically deformed, or the length of the elastic element between the electronic control board and the sensor is smaller than the length of the elastic element in a natural state, which is favorable for more reliable contact between the connection portion 53 and the electronic control board 12, the body is formed with a receiving cavity, a portion of the connection portion is received in the receiving cavity, another portion of the connection portion exposes the body, the connection portion 53 exposes an end of the body to abut against a conductive layer of the electronic control board 12, an opposite end of the connection portion abuts against a conductive plate or a sensing head of the sensor, welding is relatively reduced, assembly is simplified, the connection portion 53 abuts against the electronic control board 12, the electronic control board 12 is deformed, in order to eliminate an acting force of the connection portion 53 on the electronic control board 12, meanwhile, stability of the electronic control board 12 is enhanced, the cover 11 is provided with a support portion 101, the support portion 101 protrudes from an inner wall 113 of the cover 101, and protrudes toward the electronic control board 35101, the electronic control board 357 is favorable for counteracting a stable contact area of the electronic control board 357, the support portion 101, the support portion 357 is located on the electrical control board 121, the electrical control board 121.
The main body 51 further comprises a limiting portion 512 which is a non-rotating body, the limiting portion 512 comprises a limiting surface 535, the limiting surface 535 is distributed along the circumferential direction of the limiting portion 512, the second mounting portion 26 comprises a matching portion 264, the matching portion 264 comprises a matching surface, the matching surface is formed on the side wall of the second mounting portion, after the sensor is assembled with the valve body, the matching surface and the limiting surface are matched and abutted to limit the rotation of the sensor relative to the valve body, the position of the sensor relative to the valve body is ensured, and further, the position of the sensor relative to the electric control board is ensured, specifically, referring to fig. 9 and fig. 10, the main body 51 further comprises a main body portion 511, the conducting plate 54 and the main body portion 511 are fixedly arranged, in the embodiment, at least part of the limiting portion 512 protrudes out of the main body portion 511 along the axial direction of the second mounting portion 26, the main body portion 511 is adjacent to the electric control board 12 than the limiting portion 512, the main portion 512 further comprises a second compression nut, the second compression nut is pressed on the protruding portion 512 of the limiting portion 512, the main body portion 512, specifically, the second compression nut 512 is pressed on the main portion 512, the portion 512 is capable of abutting against the lower end surface 534 of abutting against the lower end face of the second limiting portion 512, the lower end face of the second mounting portion 512, the second limiting portion 541 is capable of abutting against the lower end face 263, the lower end face of pressing against the mounting portion 512, the side wall 263, the pressing against the mounting portion 26, the side wall of the pressing against the mounting portion, the mounting portion 263, the side wall, the mounting portion 263 is capable of pressing against the side wall of pressing surface, and capable of pressing against the side wall of pressing against the side wall, and capable of pressing against the side wall, and pressing against the side wall of pressing against the side wall, and capable of pressing against the side wall of pressing against the side wall, and preventing the side wall of pressing against the side wall of the sensor, and pressing against the side wall of the side wall, the mounting portion, the side wall, the pressing against the side wall, the pressing against the side wall, the pressing against the side wall, the side wall of the side wall, the pressing against the side wall, the pressing against the side wall.
In this embodiment, the electronic expansion valve further includes a third sealing member 520 disposed between the bottom of the second mounting portion and the sensor to form a sealing structure between the sensor and the valve body, so as to prevent the working medium in the second passage from entering the control chamber through a gap between the sensor and the valve body. The third sealing element 520 is arranged at the bottom of the second mounting part and is limited by forming a matching surface, the distance from the abutting surface to the bottom of the second mounting part is less than the thickness of the third sealing element, the lower end surface 534 of the limiting part is in contact with the third sealing element 520 to press the third sealing element 520 to the bottom of the second mounting part, and the compression amount of the third sealing element is controlled by setting the distance from the abutting surface to the bottom of the second mounting part, so that the situation that the sealing effect of the third sealing element 520 is poor due to too large or too small pressing force acting on the third sealing element 520 is avoided, the sealing between the second mounting part 26 and the sensor 50 is enhanced, the risk that a working medium leaks to a control cavity is reduced, the sealing performance of the electronic expansion valve is improved, and the risk of internal leakage is; it can be known that the third sealing element may also be disposed between the limiting surface and the valve body, that is, the third groove is disposed on the limiting surface or the valve body, the third sealing element is clamped in the third groove, and the limiting surface or the valve body, which is not provided with the third groove, compresses the third sealing portion. Or, a third groove or step part is formed on the lower end surface of the limiting part of the sensor; or a third groove is formed on the abutting surface of the second mounting part, the third sealing element is clamped in the third groove, the depth of the third groove is smaller than the thickness of the third sealing element, and the third sealing element is pressed between the lower end surface of the limiting part of the sensor and the valve body.
In the present embodiment, referring to fig. 11, the cover 11 further includes a second ring portion 117, the second ring portion 117 is formed near the outer edge of the cover 11 of the control portion, or the second ring portion 117 surrounds the outer periphery of the control cavity, or the second ring portion 0 surrounds the outer periphery of the control cavity, in 1 embodiment of the present invention, after the cover is assembled with the valve body, the second ring portion 117 abuts against the 3 rd sidewall 204 of the valve body, the electronic expansion valve further includes a4 th sealing member 60, the 5 th sealing member 5 is disposed around the outer periphery of the control cavity, the 6 th sealing member 60 is disposed between the 7 th sidewall 204 and the 8 th ring portion 117, in step 9, the cover 11 compresses the second sealing member 60 against the valve body 20, so that the sealing between the cover 11 and the valve body 20 can be enhanced, the leakage of the working medium to the outside of the electronic expansion valve through the connection between the cover and the valve body is reduced, or the external medium enters the inside the electronic expansion valve through the connection between the cover and the valve body, thereby improving the sealing of the electronic expansion valve, in 0 embodiment, the 1 st sealing member, in which the first ring portion 117 is disposed near the outer periphery of the cover 11, specifically, in fig. 7, in the axial direction of the second ring portion 26, the second ring portion 250, the second ring portion 7 is disposed around the projection of the second ring portion 7, and the projection of the control cavity, thus, the projection of the control cavity, the projection of the control cavity, the electrical control shell 7 is prevented from the projection of the electrical control cavity 7 from the plug pin, the electrical control shell 7 from the plug pin, the plug 7 from the plug 7, the plug pin, the plug 7, the plug pin, the plug 7, the plug pin, the plug 7, the plug pin, the plug pin, the plug 7, the plug pin.
In this embodiment, the electronic expansion valve further includes a th groove 103, the th groove 103 may be disposed on the th ring 117, the 1 th groove 103 may also be disposed on the valve body 20, that is, a wall of the th groove is part of the th side wall 204, or the th side wall 204 includes a wall of the th groove, the th groove 103 is disposed opposite to the th ring 117, the 9 th sealing member 60 is disposed on the th groove 103, a depth of the th groove is smaller than a height of the th sealing member , the th sealing member 60 is pressed when the cover body 11 and the valve body 20 are fixed, so as to achieve sealing between the valve body 20 and the cover body 11, in addition, referring to fig. 11, the electronic expansion valve further includes at least card slots 105, the card slots 105 and the th groove 103 are disposed on the th ring of the valve body or the cover body, the card slots 105 and the th groove 103 are communicated, accordingly, the sealing member 60 further includes at least 72 projections, the th projection 601 is disposed on the ring 601 to facilitate the sealing member 601 to prevent the valve body 601 from falling off when the valve body 601 is mounted, and the valve body 601.
Referring to fig. 11 and 13, the cover body 11 further includes two limit pins 102, the number of the limit pins is greater than or equal to two, in this embodiment, the cover body includes two limit pins 102, the limit pins 102 are fixedly connected to the th ring portion 117, the limit pins 102 protrude toward the valve body 20 relative to the th ring portion 117, the limit pins 102 are disposed near the outer edge of the th ring portion 117, or the limit pins are located outside the th groove, the valve body 20 includes positioning holes 202, the number of the positioning holes 202 is the same as the number of the limit pins 102, the limit pins 102 are inserted into the positioning holes 202 to define the relative positions of the control portion 10 and the valve body 20, so that the control portion 10 can be prevented from deviating relative to the valve body 20 in the assembling process, so that the fixed connection between the control portion 10 and the valve body 20 is accurate and the assembly is convenient.
The electronic expansion valve further comprises a fastening device 70, the fastening device 70 can be a bolt or a screw, the cover 11 comprises a second communication hole 104, the second communication hole 104 is arranged near the outer edge of the ring 117, that is, the second communication hole 104 penetrates through the ring 117, the valve body 20 comprises a threaded hole 203, the fastening device 70 penetrates through the second communication hole 104 and the threaded hole 203 to fixedly connect the control part 10 and the valve body 20, in this embodiment, the number of the second communication holes is greater than or equal to two, and the number of the threaded holes is the same as that of the second communication holes, so as to compress the sealing member 60, so that the control part 10 and the valve body 20 can be integrated into whole bodies, and the sealing performance, the waterproof and the dustproof performance between the valve body 20 and the control part 10 can be ensured, the intrusion of external water or dust and the leakage of the internal working medium can be.
With reference to fig. 11 to 13, a manufacturing method of electronic expansion valves includes a control part, a valve body, a valve component and a sensor, where the control part includes a cover body, a stator component and an electric control board, the cover body and the stator component are integrated into pieces by injection molding, and the manufacturing method includes the following steps:
a1, assembling the control part, including
The th part of the control part is formed, and the th part comprising a cover body is formed by taking the stator assembly, the th contact pin and the second contact pin as insert injection;
the electric control board is assembled with the th part and is fixedly connected with the th contact pin and the second contact pin;
a2, fixedly connecting the valve member with the valve body;
a3, fixedly connecting the sensor with the valve body;
a4, assembling the control part formed in the step a1 and the assembly formed in the steps a2 and a 3.
The above sequence of steps a1, a2, a3 is adjustable, a4 follows steps a1, a2, a 3. Before the step a2, the method further comprises assembling a valve component, wherein the valve component comprises a valve seat, a valve core, a sleeve, a connecting piece and a rotor assembly, the rotor assembly and the valve core assembly are arranged on the inner side of the sleeve, the sleeve and the connecting piece are welded and fixed, and the valve seat and the connecting piece are welded and fixed.
Before step a3, the method further comprises forming a sensor, wherein the sensor comprises a connecting part, a conducting plate, a body and a sensing head, the connecting part comprises an elastic element, the elastic element is in contact with the conducting plate, the sensing head is in contact with the conducting plate, and the elastic element, the conducting plate and the sensing head are used as inserts to form the sensor comprising the body through injection molding.
Step a2 includes positioning the second seal in chamber , positioning the valve member in chamber , and securing the valve member to the valve body with a compression nut .
Step a3 still includes and places the third sealing member in the second chamber, and is spacing with the spacing portion of sensor and the cooperation portion of valve body, places the sensor in the second intracavity of valve body, sets up sensor and valve body fixed through second gland nut.
Step a4 further comprises the steps of placing the sealing element in the groove, inserting the limiting pin into the positioning hole of the valve body, and fixedly connecting the control part with the valve body through a fastening device.
The step a4 includes electrically connecting and/or signal connecting the sensor to the electric control board, abutting the connecting part of the sensor to the th abutting part of the electric control board, and compressing the elastic element of the connecting part of the sensor by a set length by the electric control board.
The electronic expansion valve comprises a control part, a valve body, a valve component and a sensor, wherein the control part comprises a cover body, a stator component and an electric control plate, the cover body comprises an th shell and a second shell, the second shell and the stator component body are formed, a control cavity is formed between the th shell and the second shell, and the manufacturing method of the electronic expansion valve comprises the following steps:
a1, assembling the control part, including
The th part of the control part is formed, and the th part comprising a second shell is formed by taking the stator assembly, the th contact pin and the second contact pin as insert injection;
the electric control board is fixedly connected with the contact pin and the second contact pin;
the th shell is fixedly connected with the second shell;
a2, fixedly connecting the valve member with the valve body;
a3, fixedly connecting the sensor with the valve body;
a4, assembling the control part formed in the step a1 with the valve body.
The electronic expansion valve manufactured in this way has a large degree of freedom in design of the assembly process, since the steps of assembly of the valve parts and assembly of the sensor are not limited.
It should be noted that the above-mentioned embodiments are only used for illustrating the present invention and not for limiting the technical solutions described in the present invention, and although the present invention has been described in detail by referring to the above-mentioned embodiments, it should be understood by those skilled in the art that the modifications or equivalent substitutions can be made by those skilled in the art, and should be covered by the technical solutions and modifications without departing from the spirit and scope of the present invention.
Claims (10)
- The electronic expansion valve comprises a valve body, a valve component, a control part and a sensor, wherein the valve body comprises a th mounting part and a second mounting part, the valve body is provided with a th channel and a second channel, the th channel is not communicated with the second channel, a th mounting part is provided with a th cavity, the second mounting part is provided with a second cavity, the th cavity can be communicated with the th channel, the second cavity is communicated with the second channel, an opening of the th cavity and an opening of the second cavity are positioned on the same side of the valve body, an opening of the th cavity and an opening of the second cavity are positioned on the th side wall of the valve body, the valve component is fixedly connected with the th mounting part, the sensor is fixed with the second mounting part, the sensor is in signal connection with the electronic control board, the control part comprises an electronic control cover body board, a connecting part and a cover body component, the connecting part is fixed with the electronic expansion valve body for electrically connecting and/or signal connection, the control part comprises a control part, the control part 8945 of the valve body and the electronic expansion valve body, the control part is arranged around the second cavity, and the electronic control part 8945 is arranged around the second cavity and the electronic expansion valve body.
- 2. The electronic expansion valve according to claim 1, wherein a th portion comprising the cover body is formed by injection molding by using the stator assembly as an insert, the opening of the control chamber faces the valve body, the cover body comprises a th ring portion, a 0 th ring portion surrounds the periphery of the control chamber, a 1 th ring portion is formed near the outer edge of the control portion, a 4 th groove is formed on the 2 th ring portion or the 3 th side wall, a 5 th groove is formed on the 6 th chamber opening and the periphery of the second chamber opening, the 7 th sealing member is limited on the th groove, the th groove has a depth smaller than the height of the th sealing member, the th sealing member is pressed against the th ring portion by the th side wall, and the th side wall abuts against the th ring portion.
- 3. The electronic expansion valve according to claim 1, wherein a th portion comprising the cover body is formed by injection molding by using the stator assembly as an insert, the cover body comprises a th ring portion, the 0 th ring portion is formed near the outer edge of the control portion, the 1 th side wall or the 2 th ring portion is formed with a 3 rd groove, the 4 th groove is located at the outer periphery of the opening of the second chamber, at least a part of the 5 th groove is located between the 6 th chamber opening and the second chamber opening, the 7 th sealing member is limited at the th groove, the depth of the th groove is smaller than the height of the th sealing member, the th side wall presses the th sealing member against the th ring portion, and the th side wall abuts against the th ring portion.
- 4. The electronic expansion valve according to claim 1, wherein the cover comprises a th shell and a second shell, a th portion comprising the second shell is formed by injection molding by using the stator assembly as an insert, an opening of the control cavity faces away from the valve body, the th shell and the second shell are fixed in a sealing manner, the second shell is provided with a th communicating hole, the th sealing member surrounds the periphery of the th communicating hole, the second shell presses the th sealing member against the valve body, the second shell comprises a 635 th ring portion, the th ring portion surrounds the periphery of the th communicating hole, the th ring portion or the 359 th side wall is provided with a th groove, the th sealing member is limited in the th groove, the th groove has a depth smaller than the height of the th sealing member, the th side wall presses the th sealing member against the second ring portion 5, and the th ring portion abuts against the 5857324 th ring portion.
- 5. The electronic expansion valve according to claim 2, 3 or 4, wherein the cover comprises a stopper pin, the stopper pin is located outside the th groove, the number of the stopper pins is greater than or equal to two, the valve body comprises positioning holes, the number of the positioning holes is the same as the number of the stopper pins, and the stopper pin is inserted into the positioning holes.
- 6. The electronic expansion valve according to claim 5, further comprising a fastening means, wherein the cover comprises a second communication hole formed in the th ring portion, the second communication hole is disposed closer to an outer edge of the cover than the stopper pin, the valve body comprises a threaded hole, and the fastening means passes through the second communication hole and is threadedly coupled to the threaded hole.
- 7. The electronic expansion valve according to claim 6, wherein the -th mounting portion comprises a -th stepped surface and a second stepped surface, and a second seal member is provided between the valve member and the valve body, the valve member comprises a connecting member formed with a flange portion formed with two faces, the second seal member is provided between a lower end face of the flange portion and the second stepped surface, and a lower end face of the flange portion abuts against the -th stepped surface, or the flange portion or the -th stepped portion is provided with a second groove, and the second seal member is provided in the second groove, and a depth of the second groove is smaller than a thickness of the second seal member, the electronic expansion valve comprises a -th compression nut, the -th compression nut is provided on an outer periphery of the connecting member, and a lower end face of the -th compression nut abuts against an upper end face of the flange portion.
- 8. The electronic expansion valve of claim 7, wherein: the second mounting part comprises an abutting surface, a third sealing element is arranged between the sensor and the valve body, the sensor comprises a limiting part, the limiting part comprises a limiting surface, a lower end surface of the limiting part and an upper end surface of the limiting part, the third sealing element is arranged between the lower end surface of the limiting part and the bottom of the second mounting part, and the lower end surface of the limiting part abuts against the abutting surface; or the limiting part or the valve body is provided with a third groove, and the third sealing element is arranged in the third groove; the depth of the third groove is smaller than the thickness of the third sealing element, the electronic expansion valve comprises a second compression nut, the second compression nut presses the limiting part, and the lower end face of the second compression nut is abutted to the upper end face of the limiting part.
- 9. The electronic expansion valve of claim 5, wherein the electronic expansion valve comprises at least slots, the slots and the groove are commonly disposed on the valve body or the ring portion, the slots are communicated with the groove, the sealing element comprises at least protrusions, and the protrusion of the sealing element is in interference fit with the slots.
- 10, a thermal management assembly comprising an electronic expansion valve and a heat exchanger, the electronic expansion valve being fixedly connected to the heat exchanger, the electronic expansion valve comprising a valve body, a valve member, a control portion and a sensor, the valve body comprising a first mounting portion and a second mounting portion, the valve body having a st channel and a second channel, the st channel not being communicated with the second channel, the th mounting portion having a th cavity, the second mounting portion having a second cavity, the th cavity being capable of being communicated with the th channel, the second cavity being communicated with the second channel, an opening of the st cavity and an opening of the second cavity being located on the same side of the valve body, an opening of the th cavity and an opening of the second cavity being located on a th side wall of the valve body, the valve member being fixedly connected to the second mounting portion, the sensor being fixed to the second mounting portion, the sensor being in signal connection with the electronic control plate, the control portion comprising a cover, a plate, a stator assembly and a cover body, the electronic expansion valve body being fixedly connected to the mounting portion, the electronic expansion valve body being electrically connected to the control portion, the electronic expansion valve body, the control sealing portion being arranged around the control interface portion 8945, the control portion, the electronic expansion valve body, the control portion being arranged around the control portion, the control interface portion, the electronic expansion valve body, the;the valve body comprises an th inlet, a second inlet, a th outlet and a second outlet, the th channel is communicated with the th outlet and the th inlet, the second channel is communicated with the second outlet and the second inlet, the th outlet is communicated with the inlet of the heat exchanger, the second inlet is communicated with the outlet of the heat exchanger, and the inlet of the heat exchanger is communicated with the outlet of the heat exchanger through the third channel of the heat exchanger.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810801389.8A CN110735958A (en) | 2018-07-20 | 2018-07-20 | electronic expansion valve and thermal management assembly |
| KR1020207032878A KR102490126B1 (en) | 2018-07-20 | 2019-07-16 | Electronic expansion valve and its manufacturing method and thermal management assembly |
| EP19838360.6A EP3825588A4 (en) | 2018-07-20 | 2019-07-16 | Electronic expansion valve, manufacturing method thereof, and thermal management assembly |
| JP2020561870A JP7150058B2 (en) | 2018-07-20 | 2019-07-16 | Electronic expansion valve, manufacturing method thereof and thermal management unit |
| PCT/CN2019/096207 WO2020015654A1 (en) | 2018-07-20 | 2019-07-16 | Electronic expansion valve, manufacturing method thereof, and thermal management assembly |
| US17/044,705 US11686512B2 (en) | 2018-07-20 | 2019-07-16 | Electronic expansion valve, manufacturing method thereof, and thermal management assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810801389.8A CN110735958A (en) | 2018-07-20 | 2018-07-20 | electronic expansion valve and thermal management assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110735958A true CN110735958A (en) | 2020-01-31 |
Family
ID=69235568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810801389.8A Pending CN110735958A (en) | 2018-07-20 | 2018-07-20 | electronic expansion valve and thermal management assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110735958A (en) |
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| WO2021233325A1 (en) * | 2020-05-19 | 2021-11-25 | 法雷奥汽车空调湖北有限公司 | Electronic expansion valve, heat management assembly, and automobile air-conditioning system |
| WO2021233326A1 (en) * | 2020-05-19 | 2021-11-25 | 法雷奥汽车空调湖北有限公司 | Electronic expansion valve and thermal management assembly |
| WO2022135076A1 (en) * | 2020-12-23 | 2022-06-30 | 法雷奥汽车空调湖北有限公司 | Electronic expansion valve |
| WO2022142994A1 (en) * | 2020-12-31 | 2022-07-07 | 杭州三花研究院有限公司 | Sensor device and valve assembly |
| WO2024051780A1 (en) * | 2022-09-07 | 2024-03-14 | 浙江三花汽车零部件有限公司 | Electric valve and assembly method |
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