CN107327579B - Electronic expansion valve - Google Patents
Electronic expansion valve Download PDFInfo
- Publication number
- CN107327579B CN107327579B CN201710229116.6A CN201710229116A CN107327579B CN 107327579 B CN107327579 B CN 107327579B CN 201710229116 A CN201710229116 A CN 201710229116A CN 107327579 B CN107327579 B CN 107327579B
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- seat
- spring
- groove
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- 230000003068 static effect Effects 0.000 claims description 37
- 238000007789 sealing Methods 0.000 claims description 18
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 3
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920002530 polyetherether ketone Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 238000002955 isolation Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
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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
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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
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Details Of Valves (AREA)
Abstract
The invention relates to the field of valve equipment, in particular to an electronic expansion valve; the valve comprises a valve body part, wherein the valve body part comprises a valve seat, a straight pipe and an elbow pipe, a bearing seat is arranged on the valve seat, a valve rod is matched on the bearing seat, a through groove which is penetrated up and down is formed on the valve seat, the matched bearing seat is inserted in the through groove, the valve rod is arranged in the bearing seat, the matched straight pipe is welded at the bottom end of the through groove, a side hole communicated with the through groove is formed on the outer wall of the valve seat, the matched elbow pipe is welded on the outer wall of the valve seat, an isolation sleeve is welded on the outer wall of the valve seat, and a magnetic rotor is arranged outside the upper end of the valve rod; the invention can not only realize no leakage of the electronic expansion valve in the fully closed state, but also reduce the production cost.
Description
Technical Field
The invention relates to the field of valve equipment, in particular to an electronic expansion valve.
Background
At present, electronic expansion valves at home and abroad are various in variety and different in structural characteristics, but throttle structures of the electronic expansion valves are different in size and mainly are cone valve structures. Because of the valve opening point positioning arrangement (full closing without flow) of the cone valve structure, the valve needle in the electronic expansion valve is contacted with the valve hole below, and the valve rod starts to generate axial pressure on the valve needle. When the electronic expansion valve is in the fully closed state, the axial pressure generated by the valve rod and the valve needle is maximum, because the valve needle is in the static state when in the fully closed state, the spring in the valve rod is pressed downwards by the valve rod, so that the spring is compressed; when the compression amount of the spring reaches a certain degree, the pressure born by the valve needle reaches the maximum; at the same time, the spring inside the valve rod generates an elastic force (namely, the valve needle generates a reverse axial pressure to the valve rod), and at the moment, the friction force between the external thread of the valve rod and the internal thread of the valve body is increased. When the air inlet pipe is filled with high-pressure air, and the electronic expansion valve is in a closed state, the valve needle seals the valve hole, and the high pressure at the upper end of the valve hole is larger than the low pressure at the lower end of the valve hole, so that a positive pressure difference is formed, and the high-pressure air generates an axial pressure on the valve needle. Therefore, the friction force between the external thread of the valve rod inside the electronic expansion valve and the internal thread of the valve body is increased due to the generation of the axial pressure, and the electronic expansion valve is more likely to be blocked because the driving force generated by the stepping motor is smaller than the reactive torque.
The valve needle in the cone valve structure has a certain clearance with the valve hole below the valve needle. The presence of these gaps results in an increase in the amount of gas leakage. Therefore, in order to reduce the gap of such a cone valve structure, it is necessary to increase the degree of matching between the needle and the valve hole. The matching degree is improved, and the processing precision of equipment needs to be greatly improved, namely high cost is required to be input.
Therefore, the valve opening point positioning device and the sealing device of the cone valve structure are broken through, the processing cost of parts is reduced, two devices of the electronic expansion valve are improved, and a more reasonable structure of the electronic expansion valve is invented.
Disclosure of Invention
The present invention is directed to an electronic expansion valve that solves the above-mentioned shortcomings and problems of the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides an electronic expansion valve, includes valve body part, valve body part includes disk seat, straight tube and return bend be equipped with the bearing frame on the disk seat, match the valve rod on the bearing frame form the logical groove that link up from top to bottom on the disk seat, the logical inslot inserts the bearing frame that matches be equipped with the valve rod in the bearing frame the bottom welding of logical groove matches the straight tube be equipped with on the disk seat outer wall with the communicating side hole of logical groove, the side hole welding matches the return bend weld on the outer wall of disk seat an isolation sleeve the outside magnetic rotor that is equipped with in valve rod upper end.
The invention is further provided with a positioning notch on the upper end surface of the valve seat, the positioning notch is used for positioning the static spring fixing plate, the static spring fixing plate is provided with an inner hole, and the size of the inner hole is the same as the outer diameter of the bearing seat and is arranged on the upper end surface of the valve seat and coaxial with the bearing seat.
The invention is further provided with the valve rod, the valve rod comprises a rod body, a penetrating axial hole column is formed in the rod body, two annular grooves are formed in the outer wall of the lower part of the axial hole column, and a spring hole is formed in the upper part of the axial hole column.
The invention is further provided with the bearing seat which comprises a seat body, wherein a through hole is formed in the seat body, the through hole is matched with the valve rod, a transverse hole column is arranged at the middle upper part of the through hole, an internal thread section is formed at the upper part of the inner wall of the through hole, and a collar groove for a shaft is formed at the middle part of the outer wall of the seat body.
The invention is further provided with the circular grooves formed on the inner wall of the lower port of the seat body, the outer wall of the lower port of the seat body is provided with the rectangular valve ports, the number of the rectangular valve ports can be 2, or 4, or 6, the valve ports are symmetrical in pairs, the circular grooves are internally provided with sealing gaskets, and the sealing gaskets are made of PTFE or PEEK.
The invention is further provided with a fixing groove on the outer wall of the middle end of the seat body, and the fixing groove is riveted with the valve seat.
The invention is further provided with an annular inner groove with the height equal to that of the rectangular valve port on the bearing seat is arranged in the middle of the valve seat.
The invention is further provided with a limiting static spring coaxially arranged on the outer wall of the bearing seat, the limiting static spring is fixed on a fixing hole of the static spring fixing plate, and a limiting movable spring is embedded in a spiral groove of the limiting static spring.
The invention is further provided with an upper stop part, a lower stop part and a spiral guide part, wherein the upper stop part is positioned at the upper end of the spiral guide part, the lower stop part is positioned at the lower end of the spiral guide part, and the positioning handle connected with the lower stop part is embedded into the fixing hole of the static spring fixing plate.
The invention is further provided with the static spring fixing plate, wherein the static spring fixing plate is provided with 36 teeth, the sizes of the 36 teeth are the same, the static spring fixing plate is uniformly distributed, the static spring fixing plate is provided with fixing holes, and the end faces of the fixing holes are perpendicular to the plane of the static spring fixing plate and are connected.
The invention is further provided with the magnetic rotor inside the bearing seat, the magnetic rotor consists of a plastic magnetic material and a rotor embedded shaft, a shaft hole with the same size as the outer diameter of the valve rod is formed inside the rotor embedded shaft, and an external thread section matched with the internal thread section on the bearing seat is formed on the outer wall of the shaft hole.
The invention is further provided with the rotor embedded shaft, the upper part of the rotor embedded shaft is provided with the shaft sleeve, the inside of the shaft sleeve is provided with the sleeve hole with the same outer diameter as the valve rod, the shaft sleeve is coaxial with the valve rod, and the upper end face of the shaft sleeve is leveled with the upper end face of the valve rod.
The invention is further provided with the valve rod compression spring embedded in the spring hole of the valve rod.
The invention is further provided with a spring pressing sleeve arranged at the upper part of the rotor embedded shaft, a first slotted hole larger than the outer diameter of the shaft sleeve is formed at the middle lower part of the spring pressing sleeve, a second slotted hole with the same size as the outer diameter of the valve rod pressure spring is formed at the middle part of the spring pressing sleeve, and a third slotted hole is formed at the upper part of the spring pressing sleeve.
The invention further provides that the shaft clamping ring groove on the bearing seat is used for being embedded into the shaft clamping ring, and the purpose of the shaft clamping ring is to prevent the static spring fixing plate from moving up and down.
When the tail part of the limit movable spring is positioned at the lower stop part of the limit static spring and the closing point of the electronic expansion valve and the electronic expansion valve are determined to be free from leakage, the shifting handle of the limit movable spring is contacted with the limit rib of the magnetic rotor, and one tooth of the static spring fixing plate corresponding to the upper part of the valve seat positioning notch is clamped through a designated tool.
The invention is further provided with the closing point of the electronic expansion valve, wherein the bottom end of the valve rod is contacted with the sealing gasket, and the magnetic rotor is twisted by 90-135 degrees.
The invention further provides the electronic expansion valve sealing device, wherein the valve rod is pressed on the sealing gasket through the valve rod pressure spring.
Compared with the prior art, the invention has the following beneficial effects:
the electronic expansion valve sealing device specifically presses the valve rod on the sealing gasket through the valve rod pressure spring when the bottom of the valve rod is contacted with the sealing gasket, so that the leakage amount of the electronic expansion valve is reduced when the electronic expansion valve is closed.
The valve opening point positioning device of the electronic expansion valve specifically twists the magnetic rotor by 90-135 degrees when the bottom of the valve rod is contacted with the sealing gasket, so that the valve opening pulse is within the range of 32+ -20 (note: 1 pulse=4.5 degrees).
Therefore, the invention can solve the defects in the prior art, not only can realize no leakage of the electronic expansion valve in the fully closed state, but also can reduce the cost.
Drawings
The invention is described in detail below with reference to the attached drawings and detailed description:
FIG. 1 is a schematic diagram of the seal and valve opening point positioning device of the electronic expansion valve of the present invention.
FIG. 2 is a schematic view of the valve body component of the present invention.
Fig. 3 is a cross-sectional view taken along the direction A-A in fig. 2.
Fig. 4 is a schematic structural view of a bearing housing and a sectional view in the B-B direction according to the present invention.
Fig. 5 is a schematic structural view of a static spring fixing plate in the present invention.
Fig. 6 is a schematic structural view of a spacing static spring in the present invention.
Fig. 7 is a schematic structural view of a limit moving spring in the present invention.
Fig. 8 is a schematic structural view of a bearing housing and a sectional view in the C-C direction according to the present invention.
FIG. 9 is a schematic structural view of a magnetic rotor according to the present invention and a sectional view in the direction D-D.
Fig. 10 is a schematic structural view of a shaft sleeve according to the present invention.
FIG. 11 is a schematic structural view of a spring press jacket and a sectional view in the E-E direction according to the present invention.
Detailed Description
The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings.
As shown in fig. 1, 2, 3, 4 and 5, the electronic expansion valve comprises a valve body component 1, wherein the valve body component comprises a valve seat 101, a straight pipe 102 and an elbow 103, a bearing seat 2 is arranged on the valve seat 101, a valve rod 9 is matched on the bearing seat 2, a through groove 1011 which penetrates through from top to bottom is formed on the valve seat 101, the matched bearing seat 2 is inserted into the through groove 1011, the valve rod 9 is arranged in the bearing seat 2, the matched straight pipe 102 is welded at the bottom end of the through groove 1011, a side hole communicated with the through groove 1011 is formed on the outer wall of the valve seat 101, an isolating sleeve 13 is welded on the outer wall of the valve seat 101, and a magnetic rotor 8 is arranged outside the upper end of the valve rod 9.
In the invention, the upper end surface of the valve seat 101 is provided with a positioning notch 1013, the positioning notch 1013 is used for positioning the fixed spring plate 4, the fixed spring plate 4 is provided with an inner hole 401, and the size of the inner hole 401 is the same as the outer diameter of the bearing seat 2 and is arranged on the upper end surface of the valve seat 101 and coaxial with the bearing seat 2.
The bearing seat 2 comprises a seat body 201, a through hole 202 is formed in the seat body 201, the through hole 202 is matched with the valve rod 9, a transverse hole column 203 is arranged at the middle upper part of the through hole 202, an internal thread section 204 is formed at the upper part of the inner wall of the through hole 202, a shaft clamping ring groove 205 is formed in the middle of the outer wall of the seat body 201, a fixing groove 206 is formed below the shaft clamping ring 7, and the fixing groove 206 is riveted with the valve seat 101.
In the invention, a circular groove 208 is formed on the inner wall of the lower port of the seat 201, rectangular valve ports 207 are arranged on the outer wall of the lower port of the seat 201, the number of the rectangular valve ports 207 can be 2, or 4, or 6, the valve ports are symmetrical in pairs, a sealing gasket 3 is arranged in the circular groove 208, and the sealing gasket 3 is made of PTFE or PEEK.
In the invention, the fixed plate 4 has 36 teeth 402, the 36 teeth 402 have the same size and are uniformly distributed, the fixed plate 4 has fixing holes 403, and the end faces 404 of the fixing holes 403 are perpendicular to the plane 405 of the fixed plate 4 and are connected.
In the invention, the outer wall of the bearing seat 2 is provided with a coaxially installed limit static spring 5, the limit static spring 5 is fixed on a fixing hole 403 of the static spring fixing plate, and a limit movable spring 6 is embedded in a spiral groove of the limit static spring 5.
In the present invention, the limit static spring 5 has an upper stop portion 501, a lower stop portion 502 and a spiral guide portion 503, the upper stop portion 501 is located at the upper end of the spiral guide portion 503, the lower stop portion 502 is located at the lower end of the spiral guide portion 503, and the positioning handle 504 connected to the lower stop portion 502 is embedded in the fixing hole 403 of the static spring fixing plate 4.
The valve rod 9 in the invention comprises a rod body 901, wherein an axial hole column 902 penetrating through the rod body 901 is formed, 2 annular grooves 903 are formed on the outer wall of the lower part of the axial hole column 902, and a spring hole 904 is formed on the upper part of the axial hole column 902.
An annular inner groove 1012 with the same height as the rectangular valve port 207 on the bearing seat 2 is arranged on the middle part of the valve seat 101.
In the invention, a magnetic rotor 8 is arranged in the bearing seat 2, the magnetic rotor 8 consists of a plastic magnetic material 801 and a rotor embedded shaft 802, a shaft hole 8021 with the same size as the outer diameter of the valve rod 9 is formed in the rotor embedded shaft 802, and an external thread section 8022 matched with the internal thread section 204 on the bearing seat 2 is formed on the outer wall of the shaft hole 8021.
In the invention, a shaft sleeve 11 is arranged at the upper part of the rotor embedded shaft 802, a sleeve hole 1101 with the same outer diameter as the valve rod 9 is formed in the shaft sleeve 11, the shaft sleeve 11 is coaxial with the valve rod 9, the upper end surface of the shaft sleeve 11 is level with the upper end surface of the valve rod 9, and the shaft sleeve 11 and the valve rod 9 are connected together in a welding mode.
The spring hole 904 of the valve rod 9 is embedded with a valve rod pressure spring 10.
In the present invention, a spring pressing sleeve 12 is disposed at the upper portion of the rotor shaft 802, a first slot 1201 larger than the outer diameter of the shaft sleeve 11 is formed at the middle lower portion of the spring pressing sleeve 12, a second slot 1202 having the same size as the outer diameter of the valve rod compression spring 10 is formed at the middle portion of the spring pressing sleeve 12, and a third slot 1203 is formed at the upper portion of the spring pressing sleeve 12.
In the present invention, the shaft collar groove 205 of the bearing housing 2 is fitted into the shaft collar 7, and the purpose of the shaft collar 7 is to prevent the stationary spring fixing plate 4 from moving up and down.
According to the electronic expansion valve disclosed by the invention, when the tail part of the limit movable spring 6 is positioned at the lower stop part 502 of the limit static spring 5 and the closing point of the electronic expansion valve is determined, and the electronic expansion valve is free from leakage or slightly leaked, the shifting handle 601 of the limit movable spring 6 is contacted with the limit rib 8011 of the magnetic rotor 8, and meanwhile, one tooth 402 corresponding to the upper part of the positioning notch 1013 of the valve seat 101 of the static spring fixing plate 4 is clamped through a designated tool.
The invention relates to a sealing device of an electronic expansion valve, which comprises: the valve rod 9 is pressed against the sealing washer 3 by the valve rod compression spring 10.
The invention relates to a valve opening point positioning device of an electronic expansion valve, which comprises a valve opening point positioning device and a valve opening point positioning device, wherein the valve opening point positioning device comprises a valve opening plate, a valve opening plate and a valve opening plate, wherein the valve opening plate is: by the bottom end of the valve rod 9 touching the sealing washer 3, the magnetic rotor 8 is twisted by 90 ° to 135 °, and this position is identified as the closing point.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. The electronic expansion valve comprises a valve body part, wherein the valve body part comprises a valve seat, a straight pipe and an elbow pipe, a bearing seat is arranged on the valve seat, a valve rod is matched on the bearing seat, a through groove which is penetrated up and down is formed on the valve seat, the matched bearing seat is inserted in the through groove, the valve rod is arranged in the bearing seat, the matched straight pipe is welded at the bottom end of the through groove, a side hole which is communicated with the through groove is formed on the outer wall of the valve seat, the matched elbow pipe is welded on the side hole, an isolating sleeve is welded on the outer wall of the valve seat, and a magnetic rotor is arranged outside the upper end of the valve rod;
the bearing seat comprises a seat body, a through hole is formed in the seat body, the through hole is matched with the valve rod, a transverse hole column is formed at the middle upper part of the through hole, an internal thread section is formed at the upper part of the inner wall of the through hole, a collar groove for a shaft is formed in the middle part of the outer wall of the seat body, a coaxially-installed limit static spring is arranged on the outer wall of the bearing seat, the limit static spring is fixed on a fixed hole of the static spring fixing plate, and a limit movable spring is embedded in a spiral groove of the limit static spring;
the valve rod comprises a rod body, a penetrating axial hole column is formed in the rod body, 2 annular grooves are formed in the outer wall of the lower part of the axial hole column, and a spring hole is formed in the upper part of the axial hole column;
the spring hole of the valve rod is embedded with a valve rod pressure spring;
the fixed spring fixing plate is provided with 36 teeth, the sizes of the 36 teeth are the same, the fixed spring fixing plate is uniformly distributed, the fixed spring fixing plate is provided with fixing holes, and the end faces of the fixing holes are perpendicular to the plane of the fixed spring fixing plate and are connected with each other; the upper part of the rotor embedded shaft is provided with a shaft sleeve, a sleeve hole with the same outer diameter as the valve rod is formed in the shaft sleeve, the shaft sleeve is coaxial with the valve rod, and the upper end face of the shaft sleeve is level with the upper end face of the valve rod; the upper part of the rotor embedded shaft is provided with a spring pressing sleeve, a first slotted hole which is larger than the outer diameter of the shaft sleeve is formed at the middle lower part of the spring pressing sleeve, a second slotted hole which is the same as the outer diameter of the valve rod pressure spring is formed at the middle part of the spring pressing sleeve, and a third slotted hole is formed at the upper part of the spring pressing sleeve;
the shaft clamping ring groove on the bearing seat is used for being embedded into a shaft clamping ring, and the shaft clamping ring aims at preventing the static spring fixing plate from moving up and down;
when the tail part of the limiting movable spring is positioned at the lower stop part of the limiting static spring and the closing point of the electronic expansion valve and the electronic expansion valve are determined to be free from leakage, the shifting handle of the limiting movable spring is contacted with the limiting rib of the magnetic rotor, and meanwhile, one tooth of the static spring fixing plate corresponding to the upper part of the valve seat positioning notch is clamped through a designated tool.
2. An electronic expansion valve according to claim 1, wherein: the valve seat upper end face is provided with a positioning notch which is used for positioning the static spring fixing plate, the static spring fixing plate is provided with an inner hole, the size of the inner hole is the same as the outer diameter of the bearing seat, the inner hole is arranged on the valve seat upper end face and is coaxial with the bearing seat, and an annular inner groove which is equal to the rectangular valve port on the bearing seat in height is arranged in the middle of the valve seat.
3. An electronic expansion valve according to claim 1, wherein: the sealing device comprises a seat body, and is characterized in that a round groove is formed in the inner wall of the lower port of the seat body, rectangular valve ports are formed in the outer wall of the lower port of the seat body, the number of the rectangular valve ports is 2, 4 or 6, the valve ports are symmetrical in pairs, a sealing gasket is arranged in the round groove, the sealing gasket is made of PTFE or PEEK, a fixing groove is formed in the outer wall of the middle end of the seat body, and the fixing groove is riveted with the valve seat.
4. An electronic expansion valve according to claim 1, wherein: the inside of the bearing seat is provided with a magnetic rotor which consists of a plastic magnetic material and a rotor embedded shaft, a shaft hole with the same size as the outer diameter of the valve rod is formed in the rotor embedded shaft, and an external thread section matched with the internal thread section on the bearing seat is formed on the outer wall of the shaft hole; the limiting static spring is provided with an upper stop part, a lower stop part and a spiral guide part, the upper stop part is positioned at the upper end of the spiral guide part, the lower stop part is positioned at the lower end of the spiral guide part, and a positioning handle connected with the lower stop part is embedded in a fixing hole of the static spring fixing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710229116.6A CN107327579B (en) | 2017-04-10 | 2017-04-10 | Electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710229116.6A CN107327579B (en) | 2017-04-10 | 2017-04-10 | Electronic expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107327579A CN107327579A (en) | 2017-11-07 |
| CN107327579B true CN107327579B (en) | 2024-03-29 |
Family
ID=60192508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710229116.6A Active CN107327579B (en) | 2017-04-10 | 2017-04-10 | Electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107327579B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107729B (en) * | 2019-06-18 | 2024-02-02 | 诸暨市亿霸电子阀门有限公司 | Self-holding magnetic coupling direct-acting four-way reversing valve |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10292876A (en) * | 1997-04-18 | 1998-11-04 | Fujitsu General Ltd | Electronic expansion valve |
| CN102252119A (en) * | 2010-05-21 | 2011-11-23 | 浙江三花股份有限公司 | Electrically operated valve and heat exchange device comprising same |
| CN102252470A (en) * | 2011-06-02 | 2011-11-23 | 上海俊乐制冷自控元件有限公司 | Straight-way type electronic expansion valve |
| CN103133707A (en) * | 2011-11-22 | 2013-06-05 | 浙江三花股份有限公司 | Motorized valve and manufacture method of motorized valve |
| CN103470785A (en) * | 2013-09-30 | 2013-12-25 | 苏州优冷机电科技有限公司 | Electronic expansion valve |
| CN104279342A (en) * | 2013-07-12 | 2015-01-14 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| CN104565401A (en) * | 2013-10-22 | 2015-04-29 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| CN104728483A (en) * | 2013-12-20 | 2015-06-24 | 杭州三花研究院有限公司 | Flow control valve and control method thereof and refrigeration system |
| CN106439211A (en) * | 2016-10-12 | 2017-02-22 | 诸暨市亿霸电子阀门有限公司 | Valve rod assembly on electronic expansion valve |
| CN207111959U (en) * | 2017-04-10 | 2018-03-16 | 诸暨市亿霸电子阀门有限公司 | A kind of electric expansion valve |
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2017
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| JPH10292876A (en) * | 1997-04-18 | 1998-11-04 | Fujitsu General Ltd | Electronic expansion valve |
| CN102252119A (en) * | 2010-05-21 | 2011-11-23 | 浙江三花股份有限公司 | Electrically operated valve and heat exchange device comprising same |
| CN102252470A (en) * | 2011-06-02 | 2011-11-23 | 上海俊乐制冷自控元件有限公司 | Straight-way type electronic expansion valve |
| CN103133707A (en) * | 2011-11-22 | 2013-06-05 | 浙江三花股份有限公司 | Motorized valve and manufacture method of motorized valve |
| CN104279342A (en) * | 2013-07-12 | 2015-01-14 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| CN103470785A (en) * | 2013-09-30 | 2013-12-25 | 苏州优冷机电科技有限公司 | Electronic expansion valve |
| CN104565401A (en) * | 2013-10-22 | 2015-04-29 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| CN104728483A (en) * | 2013-12-20 | 2015-06-24 | 杭州三花研究院有限公司 | Flow control valve and control method thereof and refrigeration system |
| CN106439211A (en) * | 2016-10-12 | 2017-02-22 | 诸暨市亿霸电子阀门有限公司 | Valve rod assembly on electronic expansion valve |
| CN207111959U (en) * | 2017-04-10 | 2018-03-16 | 诸暨市亿霸电子阀门有限公司 | A kind of electric expansion valve |
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|---|---|
| CN107327579A (en) | 2017-11-07 |
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