CN113685555A - Electronic expansion valve and refrigeration equipment - Google Patents
Electronic expansion valve and refrigeration equipment Download PDFInfo
- Publication number
- CN113685555A CN113685555A CN202111156154.6A CN202111156154A CN113685555A CN 113685555 A CN113685555 A CN 113685555A CN 202111156154 A CN202111156154 A CN 202111156154A CN 113685555 A CN113685555 A CN 113685555A
- Authority
- CN
- China
- Prior art keywords
- nut
- valve
- electronic expansion
- expansion valve
- concave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005057 refrigeration Methods 0.000 title claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims abstract description 17
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 239000007769 metal material Substances 0.000 claims description 5
- 238000001746 injection moulding Methods 0.000 claims description 4
- 239000012778 molding material Substances 0.000 claims description 4
- 239000000243 solution Substances 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- F16K1/02—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 with screw-spindle
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
-
- 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
Abstract
The invention discloses an electronic expansion valve and refrigeration equipment. The electronic expansion valve comprises a valve shell, a nut, a screw and a valve needle; the valve shell is provided with a valve port; the nut is arranged in the valve shell, the outer peripheral wall of the nut is provided with a positioning part, the positioning part is matched with the inner peripheral wall of the valve shell in a positioning way, and a thread section and a guide section are formed in the nut; one end of the screw rod extends into the nut and is in threaded fit with the threaded end; the valve needle is movably arranged in the nut and the screw in a penetrating mode, one end of the valve needle is inserted into the valve port, and the valve needle is matched with the guide section in a guiding mode; the screw rod can reciprocate along the axial direction of the nut so as to drive the valve needle to move away from or close to the valve port along the axial direction of the nut, so as to correspondingly open or close the valve port. The electronic expansion valve can ensure the coaxiality of the valve needle and the valve port.
Description
Technical Field
The invention relates to the field of household appliances, in particular to an electronic expansion valve and refrigeration equipment.
Background
In the related art, the coaxiality of a valve needle and a valve port of the electronic expansion valve is insufficient, so that the valve needle is easy to block, and the reliability of the electronic expansion valve is influenced.
Disclosure of Invention
The invention mainly aims to provide an electronic expansion valve, aiming at ensuring the coaxiality of a valve needle and a valve port.
In order to achieve the above purpose, the electronic expansion valve provided by the invention comprises a valve housing, a nut, a screw rod and a valve needle; the valve shell is provided with a valve port; the nut is arranged in the valve shell, the outer peripheral wall of the nut is provided with a positioning part, the positioning part is matched with the inner peripheral wall of the valve shell in a positioning way, and a thread section and a guide section are formed in the nut; one end of the screw rod extends into the nut and is in threaded fit with the threaded end; the valve needle is movably arranged in the nut and the screw in a penetrating mode, one end of the valve needle is inserted into the valve port, and the valve needle is matched with the guide section in a guiding mode; the screw rod can reciprocate along the axial direction of the nut so as to drive the valve needle to move away from or close to the valve port along the axial direction of the nut, so as to correspondingly open or close the valve port.
Optionally, the minimum diameter of the threaded section is not smaller than the diameter of the guide section.
Optionally, the nut includes a connecting seat and a body portion; the connecting seat is provided with a mounting hole, and the positioning part is arranged on the outer peripheral wall of the connecting seat; one end of the main body part is connected in the mounting hole, the threaded section and the guide section are formed in the main body part, and the valve needle is movably arranged in the main body part in a penetrating mode.
Optionally, the connecting seat is made of a metal material.
Optionally, at least part of the main body part is made of injection molding materials, and the main body part and the connecting seat are integrally formed.
Optionally, the connecting seat has a first concave-convex portion extending along the axial direction of the main body, the main body has a second concave-convex portion extending along the axial direction of the main body, a convex portion of the first concave-convex portion is fitted into a concave portion of the second concave-convex portion, and a convex portion of the second concave-convex portion is fitted into a concave portion of the first concave-convex portion.
Optionally, the first concave-convex part and the second concave-convex part are respectively provided in a thread shape.
Optionally, the electronic expansion valve further includes a spiral guide rail and a slip ring; the screw guide rail is sleeved on the nut; the slip ring and the spiral guide rail can be movably screwed.
Optionally, the nut is convexly provided with a protruding portion, the protruding portion is provided with a clamping groove, and one end of the spiral guide rail is limited in the clamping groove.
Optionally, the joint groove includes the edge the first draw-in groove of nut axial extension, helical guideway has first joint section, first joint section joint in first draw-in groove.
Optionally, the joint groove still include with the second draw-in groove of first draw-in groove intercommunication, the perpendicular to is followed to the second draw-in groove the axial horizontal direction of nut extends or follows the nut radially extends, helical guideway still have with the second joint section that first joint section is connected, second joint section joint in the second draw-in groove.
Optionally, the protruding portion includes a first protruding block and a second protruding block, the first slot is formed between the first protruding block and the second protruding block, and the second slot is formed between the second protruding block and the nut.
The invention also proposes a refrigeration device comprising an electronic expansion valve as defined in any one of the above.
According to the electronic expansion valve, the nut is in positioning fit with the inner peripheral wall of the valve shell through the positioning part so as to ensure the coaxiality between the nut and the valve shell, and the valve needle is in guiding fit with the guide section of the nut so as to guide the valve needle to move along the axial direction of the nut, so that the coaxiality between the valve needle penetrating through the nut and the valve port formed in the valve shell is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an electronic expansion valve according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the nut of FIG. 1;
fig. 3 is a cross-sectional view of the nut of fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
230 | |
| 10 | Valve |
231 | |
| 11 | |
24 | |
| 110 | |
240 | |
| 111 | Locating |
241 | |
| 12 | |
30 | |
| 20 | |
40 | |
| 21 | Connecting |
50 | |
| 210 | Positioning |
60 | Locating |
| 211 | First concave- |
70 | |
| 22 | |
80 | |
| 220 | |
81 | |
| 221 | |
82 | |
| 222 | Second concave- |
90 | |
| 23 | Raised part |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides an electronic expansion valve 100, which is applied to a refrigeration system. The refrigerating system can be a refrigerating system of an air conditioner, a refrigerator, a heat pump water heater or other refrigerating and heating equipment. The electronic expansion valve 100 is able to control the refrigerant medium flow in the refrigeration system.
In the embodiment of the present invention, as shown in fig. 1 to 3, the electronic expansion valve 100 includes a valve housing 10, a nut 20, a screw 40, and a valve needle 30; the valve housing 10 is provided with a valve port 110; the nut 20 is arranged in the valve housing 10, the outer peripheral wall of the nut 20 is provided with a positioning part 210, the positioning part 210 is in positioning fit with the inner peripheral wall of the valve housing 10, and a threaded section 220 and a guide section 221 are formed in the nut 20; the end of the screw 40 facing the valve port 110 extends into the nut 20 and is in threaded fit with the threaded end; the valve needle 30 is movably disposed through the nut 20 and the screw 40, one end of the valve needle 30 is inserted into the valve port 110, and the valve needle 30 is in guiding fit with the guiding section 221; the screw 40 is reciprocally movable along the axial direction of the nut 20 to drive the valve needle 30 to move away from or close to the valve port 110 along the axial direction of the nut 20, so as to open or close the valve port 110 correspondingly.
Specifically, the inner surface of the nut 20 is made of a non-metallic material, and the non-metallic material has good self-lubricating property, so that smooth matching between the screw 40 and the nut 20 and between the valve needle 30 and the nut 20 is ensured. The electronic expansion valve 100 further includes a magnetic rotor assembly, an elastic member 50 and a positioning sleeve 60, the magnetic rotor assembly includes a stator assembly and a rotor assembly 70, the rotor assembly 70 is fixedly connected to the screw 40, the screw 40 is disposed in the nut 20 and can reciprocate between a first position and a second position along an axial direction of the nut 20, the screw 40 is provided with a through hole, the valve needle 30 movably penetrates through the through hole and the nut 20, the elastic member 50 is disposed between the valve needle 30 and the screw 40, the positioning sleeve 60 is connected to an end of the valve needle 30 departing from the valve port 110, and the positioning sleeve 60 is located on a side of the screw 40 departing from the valve port 110. It should be noted that, after the electronic expansion valve 100 is powered on, the rotor assembly 70 rotates along a predetermined direction to drive the screw 40 to rotate, the screw 40 is in threaded engagement with the nut 20, so that the screw 40 moves towards the valve port 110 along the axial direction of the nut 20, and the screw 40 presses the elastic element 50 to move the valve needle 30 towards the valve port 110 along the axial direction of the nut 20, so as to close the valve port 110; the rotor assembly 70 rotates in a direction opposite to the predetermined direction to drive the screw 40 to rotate, so that the screw 40 moves in a direction away from the valve port 110 along the axial direction of the nut 20, the screw 40 abuts against the positioning sleeve 60 and moves towards one end of the valve port 110, so that the valve needle 30 moves in the direction away from the valve port 110 along the axial direction of the nut 20, and the valve port 110 is opened to adjust the flow rate of the refrigerant. The valve housing 10 is provided with a valve cavity, the valve cavity 10 is provided with a medium inlet, the valve cavity is communicated with the valve port 110 and the medium inlet, the medium inlet is connected with the medium inlet pipe, and the valve port 110 is connected with the medium outlet pipe. It can be understood that the refrigerant flows into the valve cavity from the medium inlet pipe, and flows to the medium outlet pipe through the valve port 110 when the valve needle 30 opens the valve port 110; of course, the refrigerant may also flow in the opposite direction, i.e., the refrigerant flows into the valve cavity from the medium flow pipe through the valve port 110 and flows out from the medium flow pipe.
In the electronic expansion valve 100 of the present invention, the nut 20 is in positioning fit with the inner peripheral wall of the valve housing 10 through the positioning portion 210 to ensure the coaxiality between the nut 20 and the valve housing 10, and the valve needle 30 is in guiding fit with the guiding section 221 of the nut 20 to guide the valve needle 30 to move along the axial direction of the nut 20, so as to ensure the coaxiality between the valve needle 30 penetrating through the nut 20 and the valve port 110 opened in the valve housing 10.
Further, as shown in fig. 2, the minimum diameter of the thread section 220 is not smaller than the diameter of the guide section 221. Specifically, the valve needle 30 has a through portion that passes through the screw 40 and a guide portion that is in guiding engagement with the guide section 221. It can be understood that the screw 40 is provided with an external thread to match the threaded section 220 of the nut 20, so that the screw 40 needs to have a certain wall thickness, the diameter of the through portion is smaller than that of the guiding portion, and the minimum diameter of the threaded section 220 is greater than or equal to that of the guiding section 221, so as to ensure a certain space between the through portion and the threaded section 220, thereby ensuring the wall thickness of the screw 40.
In one embodiment, as shown in fig. 1, the valve housing 10 includes a valve seat 11 and a housing 12, the valve seat 11 is provided with the valve port 110, and the positioning portion 210 is in interference fit with an inner wall of the valve seat 11; the housing 12 is attached to the end of the valve seat 11 facing away from the valve port 110. Specifically, the housing 12 is welded to an end of the valve seat 11 away from the valve port 110, the housing 12 and the valve seat 11 are sealed to form a valve cavity, and the medium inlet is opened on a side wall of the valve seat 11. In the process of assembling the electronic expansion valve 100, the nut 20, the screw 40, the valve needle 30, and other components are assembled into a module, and the assembled module is connected to the valve seat 11, and then the housing 12 is connected and fixed to the valve port 110.
In one embodiment, as shown in fig. 1, the inner peripheral wall of the valve seat 11 is provided with a positioning groove 111, and the positioning portion 210 is overlapped with the positioning groove 111. Specifically, the inner peripheral wall of the valve seat 11 at the end away from the valve port 110 is provided with the positioning groove 111, the surface of the positioning portion 210 facing the valve port 110 abuts against the groove surface of the positioning groove 111 away from the valve port 110, so that the positioning nut 20 is installed at the position in the valve seat 11, which is convenient to install, and the positioning groove 111 supports the positioning portion 210, so that the connection relationship between the nut 20 and the valve seat 11 is more stable.
In one embodiment, as shown in fig. 1-3, the nut 20 includes a connecting seat 21 and a body portion 22; the connecting seat 21 is provided with a mounting hole, and the positioning part 210 is arranged on the peripheral wall of the connecting seat 21; one end of the main body 22 is connected to the mounting hole, the threaded section 220 and the guiding section 221 are formed in the main body 22, and the valve needle 30 is movably disposed through the main body 22. Specifically, the main body 22 is cylindrical, the main body 22 has a through hole extending along an axial direction thereof, the through hole has a threaded section 220 and a guiding section 221 arranged along a direction from the outer shell 12 to the valve seat 11, the screw 40 is in threaded connection with the threaded section 220, the guiding section 221 is in guiding fit with the valve needle 30, and one end of the main body 22 facing the valve port 110 is connected in the mounting hole. The center of the mounting hole coincides with the center of a circle where the outer peripheral wall of the connecting seat 21 is located, and the through hole and the mounting hole are coaxially arranged so as to ensure the coaxiality between the valve needle 30 penetrating through the through hole and the valve port 110. Alternatively, the material of the connecting seat 21 and the main body 22 may be the same or different.
Further, as shown in fig. 1 to 3, the connecting seat 21 is made of a metal material. Specifically, the connecting seat 21 is welded to the inner peripheral wall of the valve seat 11, the welding connection strength is high, so that the nut 20 and the valve seat 11 are prevented from generating relative displacement, and the nut 20 is further fixed in the valve seat 11 on the basis of interference fit of the connecting seat 21 and the valve seat 11. The connecting seat 21 is made of metal, which is beneficial to welding the connecting seat 21 and the valve seat 11.
Further, as shown in fig. 1 to 3, at least a portion of the main body portion 22 is made of an injection molding material, and the main body portion 22 and the connecting seat 21 are integrally formed. It can be understood that the friction force between the metal is greater than the friction force between the metal and the nonmetal, the screw 40 is made of the metal, and if the main body 22 is made of the metal, the problem that the screw 40 and the nut 20 are locked due to the unsmooth thread fit between the screw 40 and the nut 20 is likely to occur, so that at least the thread section 220 of the main body 22 is made of the injection molding material to ensure the smooth thread fit between the screw 40 and the nut 20, so as to reduce the friction force between the screw 40 and the main body 22 and reduce the thread wear, thereby improving the lubrication degree between the screw 40 and the nut 20, further preventing the valve needle 30 from being locked, and improving the reliability of the electronic expansion valve 100. Specifically, the connection seat 21 and the body portion 22 are integrally molded, so that the connection strength between the connection seat 21 and the body portion 22 can be ensured.
In one embodiment, as shown in fig. 3, the connecting seat 21 has a first concave-convex portion 211 extending along the axial direction of the main body portion 22, the main body portion 22 has a second concave-convex portion 222 extending along the axial direction of the main body portion, a convex portion of the first concave-convex portion 211 is fitted into a concave portion of the second concave-convex portion 222, and a convex portion of the second concave-convex portion 222 is fitted into a concave portion of the first concave-convex portion 211.
Specifically, the convex portion of the first concave-convex portion 211 protrudes in the radial direction of the connection seat 21, the concave portion of the first concave-convex portion 211 is recessed in the radial direction of the connection seat 21, the convex portion of the second concave-convex portion 222 protrudes in the radial direction of the main body portion 22, the concave portion of the second concave-convex portion 222 is recessed in the radial direction of the main body portion 22, and the first concave-convex portion 211 and the second concave-convex portion 222 are fitted into each other to limit the degree of freedom of the main body portion 22 and the connection seat 21 in the axial direction of the nut 20, so that the main body portion 22 and the connection seat 21 do not generate relative displacement in the axial direction of the nut 20, and the connection strength of the main body portion 22 and the connection seat 21 is improved.
Further, as shown in fig. 3, the first concave-convex portion 211 and the second concave-convex portion 222 are respectively provided in a screw shape. Specifically, the first concave-convex portion 211 and the second concave-convex portion 222 are screwed, so that the main body portion 22 and the connection holder 21 are easily attached and detached.
In one embodiment, as shown in fig. 1 and 2, the electronic expansion valve 100 further comprises a spiral guide 80 and a slip ring 90; the screw guide 80 is sleeved on the nut 20; the slip ring 90 is movably screwed with the spiral guide 80. Specifically, the helical track 80 is sleeved on the main body portion 22, the helical track 80 and the outer side wall of the main body portion 22 form a threaded track, the sliding ring 90 is screwed in the threaded track, so that the sliding ring 90 can move back and forth along the axis of the helical track 80, and the length of the sliding ring 90 is shorter than that of the helical track 80. The rotor assembly 70 includes a stop rod drivingly connected to the threaded rod 40, which when rotated urges the slip ring 90 to move up and down about the helical track 80. When the valve port 110 is opened, the rotor assembly 70 rotates to make the stop rod follow and rotate, and when the driving slip ring 90 moves around the spiral guide 80 to the top dead center of the spiral guide 80, the slip ring 90 stops moving and stops the stop rod to continue rotating, so that the screw 40 stops rotating, and the valve needle 30 stops moving; when the valve port 110 is closed, the rotor assembly 70 rotates in the opposite direction, so that when the stopping rod drives the sliding ring 90 to move around the spiral guide 80 to the bottom dead center of the spiral guide 80, the sliding ring 90 stops moving and stops the stopping rod to continue rotating, so that the screw 40 stops rotating, and the valve needle 30 stops moving.
In an embodiment, as shown in fig. 2, the nut 20 is convexly provided with a protruding portion 23, the protruding portion 23 is provided with a clamping groove 24, and one end of the spiral guide 80 is limited in the clamping groove 24. Specifically, a wall surface of the connecting seat 21 away from the valve port 110 is convexly provided with a protruding portion 23, and the protruding portion 23 is provided with a clamping groove 24 to fix the spiral guide 80 on the main body portion 22.
In one embodiment, as shown in fig. 2, the clamping groove 24 includes a first clamping groove 240 extending along the axial direction of the nut 20, and the spiral guide 80 has a first clamping section 81, and the first clamping section 81 is clamped in the first clamping groove 240. Specifically, the extending direction of the first engaging groove 240 is parallel to the axial direction of the main body 22, the first engaging section 81 is parallel to the axial direction of the main body 22, and the first engaging section 81 is engaged with the first engaging groove 240, so as to fix the spiral guide rail 80 in the axial direction of the nut 20.
Further, as shown in fig. 2, the clamping groove 24 further includes a second clamping groove 241 communicated with the first clamping groove 240, the second clamping groove 241 extends along a direction perpendicular to the axial direction of the nut 20 or along the radial direction of the nut 20, the spiral guide rail 80 further has a second clamping section 82 connected with the first clamping section 81, and the second clamping section 82 is clamped in the second clamping groove 241. Specifically, the extending direction of the second clamping groove 241 is parallel to the axial horizontal direction of the main body 22 or the circumferential direction of the main body 22, the extending direction of the second clamping section 82 is parallel to the axial horizontal direction of the main body 22 or the circumferential direction of the main body 22, and the second clamping section 82 is clamped to the second clamping groove 241, so that the spiral guide rail 80 is fixed in the circumferential direction of the nut 20.
In one embodiment, as shown in fig. 2, the protruding portion 23 includes a first protrusion 230 and a second protrusion 231, the first locking groove 240 is formed between the first protrusion 230 and the second protrusion 231, and the second locking groove 241 is formed between the second protrusion 231 and the nut 20. Specifically, a wall surface of the connecting seat 21 facing away from the valve port 110 is convexly provided with a first protrusion 230 and a second protrusion 231, the first protrusion 230 and the second protrusion 231 are arranged at intervals, a gap between the first protrusion 230 and the second protrusion 231 is a first locking groove 240, a gap between the second protrusion 231 and the wall surface of the connecting seat 21 facing away from the valve port 110 is a second locking groove 241, the first locking groove 240 is perpendicular to the second locking groove 241, and the first locking groove 240 and the second locking groove 241 are arranged in an L shape in a communicating manner.
The present invention further provides a refrigeration device, which includes an electronic expansion valve 100, and the specific structure of the electronic expansion valve 100 refers to the above embodiments, and since the refrigeration device adopts all technical solutions of all the above embodiments, at least all beneficial effects brought by the technical solutions of the above embodiments are achieved, and are not described in detail herein. The refrigeration equipment can be an air conditioner, a refrigerator, a heat pump water heater and the like.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (13)
1. An electronic expansion valve, comprising:
a valve housing provided with a valve port;
the nut is arranged in the valve shell, the outer peripheral wall of the nut is provided with a positioning part, the positioning part is matched with the inner peripheral wall of the valve shell in a positioning way, and a thread section and a guide section are formed in the nut;
one end of the screw rod extends into the nut and is in threaded fit with the threaded end; and the number of the first and second groups,
the valve needle is movably arranged in the nut and the screw in a penetrating mode, one end of the valve needle is inserted into the valve port, and the valve needle is matched with the guide section in a guiding mode;
the screw rod can reciprocate along the axial direction of the nut so as to drive the valve needle to move away from or close to the valve port along the axial direction of the nut, so as to correspondingly open or close the valve port.
2. The electronic expansion valve of claim 1, wherein the minimum diameter of the threaded section is not less than the diameter of the guide section.
3. The electronic expansion valve of claim 1, wherein the nut comprises:
the connecting seat is provided with a mounting hole, and the positioning part is arranged on the outer peripheral wall of the connecting seat; and the combination of (a) and (b),
one end of the main body part is connected in the mounting hole, the threaded section and the guide section are formed in the main body part, and the valve needle is movably arranged in the main body part in a penetrating mode.
4. The electronic expansion valve of claim 3, wherein the connecting seat is made of a metal material.
5. The electronic expansion valve of claim 4, wherein the body portion is at least partially made of injection molding material, and the body portion is integrally formed with the connection seat.
6. The electronic expansion valve according to claim 3, wherein the connecting seat has a first concave-convex portion extending along an axial direction of the main body portion, the main body portion has a second concave-convex portion extending along an axial direction of the main body portion, a convex portion of the first concave-convex portion is fitted into a concave portion of the second concave-convex portion, and a convex portion of the second concave-convex portion is fitted into a concave portion of the first concave-convex portion.
7. The electronic expansion valve according to claim 6, wherein the first concave-convex portion and the second concave-convex portion are each provided in a screw shape.
8. The electronic expansion valve of any of claims 1-7, further comprising:
the spiral guide rail is sleeved on the nut; and the combination of (a) and (b),
and the sliding ring can be movably screwed with the spiral guide rail.
9. The electronic expansion valve according to claim 8, wherein the nut is provided with a protruding portion, the protruding portion is provided with a locking groove, and one end of the spiral guide rail is limited in the locking groove.
10. The electronic expansion valve of claim 9, wherein the snap groove comprises a first snap groove extending axially along the nut, and the spiral guide rail has a first snap section that snaps into the first snap groove.
11. The electronic expansion valve of claim 10, wherein the clamping groove further comprises a second clamping groove communicated with the first clamping groove, the second clamping groove extends along a horizontal direction perpendicular to an axial direction of the nut or extends along a radial direction of the nut, the spiral guide rail further comprises a second clamping section connected with the first clamping section, and the second clamping section is clamped in the second clamping groove.
12. The electronic expansion valve of claim 11, wherein the protrusion comprises a first protrusion and a second protrusion, the first protrusion and the second protrusion forming the first slot therebetween, and the second protrusion and the nut forming the second slot therebetween.
13. A refrigeration device comprising an electronic expansion valve according to any of claims 1-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111156154.6A CN113685555A (en) | 2021-09-29 | 2021-09-29 | Electronic expansion valve and refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111156154.6A CN113685555A (en) | 2021-09-29 | 2021-09-29 | Electronic expansion valve and refrigeration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113685555A true CN113685555A (en) | 2021-11-23 |
Family
ID=78587491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111156154.6A Pending CN113685555A (en) | 2021-09-29 | 2021-09-29 | Electronic expansion valve and refrigeration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113685555A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114992336A (en) * | 2022-05-30 | 2022-09-02 | 海力达汽车科技有限公司 | Large-flow electronic expansion valve |
| WO2023142224A1 (en) * | 2022-01-26 | 2023-08-03 | 广东威灵电机制造有限公司 | Electronic expansion valve and refrigeration device |
| WO2023197891A1 (en) * | 2022-04-14 | 2023-10-19 | 海力达汽车科技有限公司 | Stop structure and electronic expansion valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454819A (en) * | 2010-10-15 | 2012-05-16 | 浙江三花股份有限公司 | Electric valve and stopping device thereof |
| JP3193927U (en) * | 2014-03-13 | 2014-10-30 | 浙江盾安禾田金属有限公司 | Adjustable expansion valve |
| CN106151675A (en) * | 2015-04-13 | 2016-11-23 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve check structure |
| WO2021103753A1 (en) * | 2019-11-27 | 2021-06-03 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
-
2021
- 2021-09-29 CN CN202111156154.6A patent/CN113685555A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454819A (en) * | 2010-10-15 | 2012-05-16 | 浙江三花股份有限公司 | Electric valve and stopping device thereof |
| JP3193927U (en) * | 2014-03-13 | 2014-10-30 | 浙江盾安禾田金属有限公司 | Adjustable expansion valve |
| CN104913098A (en) * | 2014-03-13 | 2015-09-16 | 浙江盾安禾田金属有限公司 | Electronic expansion valve stop structure and electronic expansion valve |
| CN106151675A (en) * | 2015-04-13 | 2016-11-23 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve check structure |
| WO2021103753A1 (en) * | 2019-11-27 | 2021-06-03 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023142224A1 (en) * | 2022-01-26 | 2023-08-03 | 广东威灵电机制造有限公司 | Electronic expansion valve and refrigeration device |
| WO2023197891A1 (en) * | 2022-04-14 | 2023-10-19 | 海力达汽车科技有限公司 | Stop structure and electronic expansion valve |
| CN114992336A (en) * | 2022-05-30 | 2022-09-02 | 海力达汽车科技有限公司 | Large-flow electronic expansion valve |
| CN114992336B (en) * | 2022-05-30 | 2023-11-10 | 海力达汽车科技有限公司 | Large-flow electronic expansion valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113685555A (en) | Electronic expansion valve and refrigeration equipment | |
| US11261974B2 (en) | Electronic expansion valve | |
| CN217784254U (en) | Electronic expansion valve and refrigeration equipment | |
| CN116697055A (en) | Valve needle assembly, electronic expansion valve and refrigeration equipment | |
| CN112503189A (en) | Electronic expansion valve and refrigeration equipment | |
| JP2015105714A (en) | Stepping motor drive-type control valve | |
| CN113819249A (en) | Electronic expansion valve and refrigeration equipment | |
| CN217784259U (en) | Electronic expansion valve assembly, electronic expansion valve and refrigeration equipment | |
| CN111365466A (en) | Electronic expansion valve and air conditioning system using same | |
| CN110836271A (en) | Electronic expansion valve and air conditioning system using same | |
| CN215928404U (en) | Electronic expansion valve and refrigeration equipment | |
| CN113685558A (en) | Electronic expansion valve and refrigeration equipment | |
| CN217927233U (en) | Electronic expansion valve and refrigeration equipment | |
| CN110836270B (en) | Electronic expansion valve | |
| CN215720867U (en) | Electronic expansion valve and refrigeration equipment | |
| CN215928403U (en) | Electronic expansion valve and refrigeration equipment | |
| CN214171340U (en) | Valve needle assembly, electronic expansion valve and refrigeration equipment | |
| CN214999482U (en) | Valve needle assembly, electronic expansion valve and refrigeration equipment | |
| CN113685556A (en) | Electronic expansion valve and refrigeration equipment | |
| CN112128408B (en) | Fluid management assembly | |
| CN215371216U (en) | Electronic expansion valve and refrigeration equipment | |
| CN113685557A (en) | Electronic expansion valve and refrigeration equipment | |
| CN216812905U (en) | Electronic expansion valve, refrigerating system and automobile | |
| CN114352741A (en) | Electronic expansion valve, refrigeration equipment and automobile | |
| CN215980838U (en) | Electronic expansion valve and refrigeration equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |