WO2023143027A1 - Nut seat and electronic expansion valve - Google Patents
Nut seat and electronic expansion valve Download PDFInfo
- Publication number
- WO2023143027A1 WO2023143027A1 PCT/CN2023/071414 CN2023071414W WO2023143027A1 WO 2023143027 A1 WO2023143027 A1 WO 2023143027A1 CN 2023071414 W CN2023071414 W CN 2023071414W WO 2023143027 A1 WO2023143027 A1 WO 2023143027A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- threaded
- nut seat
- nesting
- side wall
- electronic expansion
- Prior art date
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 4
- 238000004512 die casting Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000004663 powder metallurgy Methods 0.000 claims description 2
- 235000012149 noodles Nutrition 0.000 claims 1
- 238000000034 method Methods 0.000 description 8
- 238000001746 injection moulding Methods 0.000 description 6
- 238000000465 moulding Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Images
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
- 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
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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
-
- 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
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- 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
- F25B41/345—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids
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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
Definitions
- the present disclosure relates to the technical field of refrigeration systems, in particular, to a nut seat and an electronic expansion valve.
- the nut seat of the electronic expansion valve in the related art includes a threaded part made of plastic and a nesting part sheathed on the outer periphery of the threaded part.
- the threaded part is used for threaded connection with the screw rod and is connected with the valve seat through the nesting part.
- the bonding strength of the screw and the insert in the related art is insufficient.
- Embodiments of the present disclosure provide a nut seat and an electronic expansion valve to improve the bonding strength between the threaded part and the nested part.
- the nut seat of the embodiment of the present disclosure is applied to an electronic expansion valve, and the nut seat includes a threaded part and a nesting part, and the threaded part is used for threaded connection with the screw rod of the electronic expansion valve; the outer peripheral surface of the threaded part has The first tooth groove structure; the nest is sleeved on the outer periphery of the threaded member for connecting with the valve seat of the electronic expansion valve; the inner peripheral surface of the nest has a second tooth groove structure, the The second alveolar structure cooperates with the first alveolar structure.
- the nut seat of the embodiment of the present disclosure includes a threaded part and a nesting part sleeved on the outer periphery of the threaded part, and the threaded part and the nesting part are combined with the first toothed groove structure through the second toothed groove structure.
- the bonding area between the threaded part and the nesting part is increased, thereby improving the bonding strength of the threaded part and the nesting part, and ensuring the working stability of the nut seat.
- the second alveolar structure of the nesting member can be formed at one time without cutting, the forming efficiency is significantly improved and the cost is reduced.
- FIG. 1 shows a cross-sectional view of an electronic expansion valve according to an embodiment of the present disclosure.
- FIG. 2 shows a perspective view of a nut seat according to an embodiment of the present disclosure.
- Fig. 3 shows a cross-sectional view of a nut holder according to an embodiment of the present disclosure.
- FIG. 4 shows a perspective view of a threaded member according to an embodiment of the present disclosure.
- FIG. 5 shows a perspective view of a nest of embodiments of the present disclosure.
- Example embodiments will now be described more fully with reference to the accompanying drawings.
- Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
- the same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.
- FIG. 1 shows a cross-sectional view of an electronic expansion valve according to an embodiment of the present disclosure.
- the electronic expansion valve in the embodiment of the present disclosure includes a housing 1 , a coil (not shown in the figure), a valve seat 2 , a nut seat 3 , a screw rod 4 , a valve needle 5 and a magnetic rotor 6 .
- the valve seat 2 is connected with the housing 1 and together with the housing 1 forms a chamber 13 .
- the valve seat 2 has a valve port 21 and a recess 22 corresponding to the valve port 21 .
- the coil is provided on the outer periphery of the housing 1 .
- the nut seat 3 is arranged in the cavity 13 and is arranged in the recess 22 .
- the screw rod 4 is arranged in the chamber 13 and screwed with the nut seat 3 .
- the valve needle 5 is connected with the threaded rod 4 for cooperating with the valve port 21 to adjust the opening of the valve port 21 .
- the magnetic rotor 6 is arranged in the chamber 13 and is inductively connected with the coil and connected with the screw rod 4 .
- the magnetic rotor 6 When the coil is energized, the magnetic rotor 6 can rotate around its own axis, thereby driving the screw mandrel 4 to rotate synchronously.
- the threaded rod 4 and the nut seat 3 rotate relative to each other through the thread structure, the threaded rod 4 can move axially relative to the nut seat 3 , and then drive the valve needle 5 to move in the axial direction to realize the adjustment of the opening of the valve port 21 .
- the housing 1 may include a tube portion 11 and a cover 12 disposed at one end of the tube portion 11 .
- the connection between the cover 12 and the tube portion 11 may be by welding, such as laser welding, but not limited thereto.
- the valve seat 2 is connected to the housing 1 , and the valve seat 2 and the housing 1 jointly form a chamber 13 . Specifically, the valve seat 2 is connected to the other end of the pipe portion 11, for example by welding.
- the valve seat 2 is also connected with the first connecting pipe 91 and the second connecting pipe 92 .
- the valve port 21 of the valve seat 2 is disposed between the first connecting pipe 91 and the second connecting pipe 92 .
- the valve needle 5 blocks the valve port 21 , the first connecting pipe 91 and the second connecting pipe 92 are not connected.
- the valve needle 5 is not blocking the valve port 21 , the first connecting pipe 91 and the second connecting pipe 92 are connected.
- the concave portion 22 of the valve seat 2 includes a bottom portion 221 and a side portion 222 , the side portion 222 surrounds the outer edge of the bottom portion 221 and extends axially upward.
- the bottom 221 of the valve seat 2 also has a through hole 25 along the thickness direction, and the valve needle 5 passes through the through hole 25 .
- valve seat 2 is a metal piece.
- the upper end of the side portion 222 can be deformed radially inward to limit the nut seat 3 in the recess 22, preventing the nut seat 3 from axially contacting the valve.
- Seat 2 disengages.
- the wall thickness of the side portion 222 of the valve seat 2 gradually becomes thinner from bottom to top.
- the nut seat 3 and the valve seat 2 may be riveted together by means of press fitting. After the nut seat 3 is installed in the concave portion 22 of the valve seat 2, the side portion 222 of the valve seat 2 is pressed in the axial direction, so that the side portion 222 can be deformed in the radial direction, and riveting is finally realized.
- the nut seat 3 also has a balance channel 82 , and the balance channel 82 runs through the inner and outer peripheral surfaces of the nut seat 3 .
- the space in the valve seat 2 can be communicated with the chamber 13, so that the valve needle 5 will not be subjected to resistance due to air pressure imbalance during the axial movement.
- the screw rod 4 also includes a receiving groove 41 .
- the electronic expansion valve also includes an elastic member 81, which is arranged in the receiving groove 41, and one end of the elastic member abuts against the bottom of the accommodating groove 41, and the other end abuts against the valve needle 5, so that the valve needle 5 has a distance away from the screw rod 4. the trend of.
- One end of the valve needle 5 is defined in the receiving groove 41 .
- the valve needle 5 and the screw rod 4 can be in soft contact instead of hard contact.
- the screw rod 4 drives the valve needle 5 to block the valve port 21, due to the action of the elastic member 81, when the screw rod 4 continues to move downward, the valve needle 5 will not continue to move downward, but will compress the elastic 81, so as to ensure that the valve needle 5 will not be locked on the valve port 21, and the screw rod 4 and the nut seat 3 will not be screwed into lock. In this way, when moving in the opposite direction, the screw rod 4 and the nut seat 3 can still rotate easily, and then drive the valve needle 5 to move upwards to open the valve port 21 .
- the elastic member 81 is a compression spring, but not limited thereto.
- the electronic expansion valve further includes a limiting member 93 , and the limiting member 93 is disposed on the groove wall of the receiving groove 41 and adjacent to the notch of the receiving groove 41 .
- One end of the valve needle 5 is provided with a flange, and the flange cooperates with the stopper 93 to limit the end of the valve needle 5 with the flange in the receiving groove 41 to prevent the valve needle 5 from coming out of the receiving groove 41 .
- the limiting member 93 may be in the shape of a sleeve, the outer wall of which is connected to the groove wall of the receiving groove 41 and sleeved on the outer periphery of the valve needle 5 .
- the electronic expansion valve of the embodiment of the present disclosure further includes a stopper assembly 7 , which is arranged in the cavity 13 and connected to the cover 12 to limit the movement range of the screw rod 4 in the axial direction.
- the stop assembly 7 includes a post 71 , a spring rail 72 , a stop ring 73 and a connecting piece 74 .
- One end of the post 71 is connected to the inner wall of the cover 12 and extends in the axial direction.
- the spring guide rail 72 is helically wound around the outer periphery of the column 71 .
- the connecting piece 74 is connected with the screw rod 4 .
- the stop ring 73 abuts against the connecting member 74 and is helically wound around the outer circumference of the column 71 , and the two ends of the spring guide rail 72 respectively have a first stop portion 76 and a second stop portion 75 .
- the stop ring 73 can spirally move in the spiral groove formed by the spring guide rail 72 .
- the stop ring 73 When the threaded mandrel 4 rotates around its own axis, the stop ring 73 coils along the helical groove of the spring rail 72 . During the movement of the screw rod 4 towards the cover 12 , when the stop ring 73 touches the first stop portion 76 , it means that the screw rod 4 has moved to the upper limit point, and the screw rod 4 cannot continue to move upward at this time. When the threaded rod 4 moves away from the cover 12 , when the stop ring 73 touches the second stop portion 75 , it means that the threaded rod 4 has moved to the lower limit point, and the threaded rod 4 cannot continue to move downwards at this time.
- FIG. 2 shows a perspective view of a nut seat according to an embodiment of the present disclosure.
- Fig. 3 shows a cross-sectional view of a nut holder according to an embodiment of the present disclosure.
- FIG. 4 shows a perspective view of a threaded member according to an embodiment of the present disclosure.
- FIG. 5 shows a perspective view of a nest of embodiments of the present disclosure.
- the nut seat 3 of the embodiment of the present disclosure includes a threaded part 31 and a nested part 32 .
- the threaded part 31 is used for threaded connection with the screw rod 4 ;
- the outer peripheral surface of the threaded part 31 has a first alveolar structure 314 .
- the nesting part 32 is sleeved on the outer periphery of the threaded part 31 for connecting with the valve seat 2 .
- the inner peripheral surface of the nesting part 32 has a second tooth groove structure 322 , and the second tooth groove structure 322 is matched with the first tooth groove structure 314 .
- the cooperation between the second alveolar structure 322 and the first alveolar structure 314 means that the teeth of the first alveolar structure 314 extend into the grooves of the second alveolar structure 322 , and the teeth of the second alveolar structure 322 The tooth portion extends into the groove portion of the first tooth groove structure 314 .
- the nut seat 3 of the embodiment of the present disclosure includes a threaded part 31 and a nesting part 32 sleeved on the outer periphery of the threaded part 31, and the threaded part 31 and the nesting part 32 are connected to the first through the second alveolar structure 322.
- the alveolar structure 314 is combined. In this way, the bonding area between the threaded part 31 and the nesting part 32 is increased, thereby improving the bonding strength of the threaded part 31 and the nesting part 32 , ensuring the working stability of the nut seat 3 .
- the second alveolar structure 322 of the nesting member 32 can be formed at one time without cutting, the forming efficiency is significantly improved and the cost is reduced.
- one-shot molding refers to injection molding, compression molding, and the like.
- the nest 32 includes a bottom wall 323 and a side wall 325 .
- the bottom wall 323 has a through hole 324 along the thickness direction, and the screw member 31 passes through the through hole 324 .
- the side wall 325 surrounds the edge of the bottom wall 323 and extends upward from the bottom wall 323 .
- the second alveolar structure 322 is disposed on the inner surface of the side wall 325 .
- the side wall 325 defines a notch 326 , the notch 326 runs through the inner wall surface and the outer wall surface of the side wall 325 , and runs through the top surface of the side wall 325 away from the bottom wall 323 .
- the number of gaps 326 is one or more, wherein "multiple" means two or more.
- the threaded part 31 has a balance channel 82 , and the balanced channel 82 runs through the inner and outer peripheral surfaces of the threaded part 31 .
- the notch 326 is set corresponding to the position of the balance channel 82 .
- the side wall 325 has two notches 326 , one of which is corresponding to the balance channel 82 .
- the two notches 326 are located on the diameter of the circle surrounded by the sidewall 325 and separate the second alveolar structure 322 into two parts.
- the molding pressure on the nesting member 32 during molding is more uniform.
- the number of notches 326 on the side wall 325 can also be one, three or other numbers.
- the number of notches 326 is greater than or equal to the number of balancing channels 82 .
- a second stepped structure 34 is formed at the junction of the bottom wall 323 and the side wall 325 , and the outer periphery of the screw member 31 has a first stepped structure 33 matching the second stepped structure 34 .
- the bonding area between the threaded part 31 and the nested part 32 can be further increased, and the combination can be improved. strength.
- the threaded member 31 includes a threaded section 311 , a first guiding section 312 and a second guiding section 313 .
- the first guiding section 312 is arranged at one end of the threaded section 311
- the second guiding section 313 is arranged at the other end of the threaded section 311 .
- the threaded section 311 has an internal thread structure, and the internal thread structure is screwed with the external thread structure of the screw rod 4 .
- the magnetic rotor 6 can rotate around its own axis, thereby driving the screw mandrel 4 to rotate synchronously.
- the screw 4 can move axially relative to the nut seat 3, and then drive the valve needle 5 to move in the axial direction to realize the adjustment of the opening of the valve port 21 .
- the threaded rod 4 is movably passed through the first guide section 312 along the axial direction.
- the valve needle 5 is movably passed through the second guide section 313 along the axial direction. A part of the second guide section 313 passes through the through hole 25 of the valve seat 2 .
- the first tooth groove structure 314 is disposed on the outer periphery of the second guiding section 313 .
- the balance channel 82 is disposed on the second guide section 313 and runs through the inner wall surface and the outer wall surface of the second guide section 313 .
- the nesting part 32 and the threaded segment 311 are axially staggered. In this way, when the insert 32 is installed into the recess 22 of the valve seat 2, the threaded section 311 can be prevented from being squeezed and deformed.
- the limiting structure includes a first plane 321 , the first plane 321 is disposed on the outer peripheral surface of the side wall 325 of the nest 32 , and the first plane 321 faces the side wall of the recess 22 of the valve seat 2 .
- the nesting part 32 and the valve seat 2 can be prevented from rotating in the circumferential direction.
- the number of first planes 321 may be multiple, wherein “multiple” means two or more.
- the limiting structure may also include a protrusion and a groove that cooperates with the protrusion.
- Protrusions may be provided on the outer peripheral surface of the nest 32
- grooves may be provided on the side wall 2 of the recess 22 .
- the nesting part 32 is a metal part formed by powder metallurgy die-casting or injection molding. Based on the above, since the nesting part 32 has the second alveolar structure 322 exposed outside, the nesting part 32 can be made by one-time molding process such as die-casting or injection molding without using cutting process, which significantly improves the molding process. efficiency.
- the threaded part 31 can be a plastic part, and the nesting part 32 can be a metal part.
- the threaded part 31 and the nested part 32 are integrally injection molded.
- the use of molds to process the threaded part 31 can ensure the thread quality, and injection molding not only has high efficiency, but also has better thread quality stability.
- the screw 31 may be made of polyphenylene sulfide (PPS), but not limited thereto.
- PPS polyphenylene sulfide
- the nesting part 32 has the second alveolar structure 322
- the nesting part 32 is put into the mold, and then the injection molding material is poured into the mold cavity of the mold to form the threaded part 31 and the nesting part 32
- the plastic material will fully fill the second alveolar structure 322 , and then form the first alveolar structure 314 correspondingly on the outer periphery of the threaded part 31 . In this way, the bonding area between the threaded part 31 and the nesting part 32 can be increased, and the bonding strength can be improved.
- connection can be fixed connection, detachable connection, or integral connection; “connection” can be directly or indirectly through an intermediary.
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Abstract
A nut seat (3) and an electronic expansion valve. The nut seat (3) comprises a threaded member (31) and a nesting member (32), the threaded member (31) being intended to be in threaded connection to a lead screw (4) of an electronic expansion valve, the outer peripheral surface of the threaded member (31) being provided with a first tooth groove structure (314), the nesting member (32) sleeving the periphery of the threaded member (31) and being intended to be connected to a valve seat (2) of the electronic expansion valve, the inner peripheral surface of the nesting member (32) being provided with a second tooth groove structure (322), and the second tooth groove structure (322) fitting with the first tooth groove structure (314). The threaded member (31) and the nesting member (32) are combined by means of the first tooth groove structure (314) and the second tooth groove structure (322).
Description
交叉引用cross reference
本公开要求于2022年1月28日提交的申请号为202220243115.3、名称为“螺母座及电子膨胀阀”的中国专利申请的优先权,该中国专利申请的全部内容通过引用全部并入本文。This disclosure claims the priority of the Chinese patent application with application number 202220243115.3 and titled "Nut Seat and Electronic Expansion Valve" filed on January 28, 2022, the entire content of which is incorporated herein by reference.
本公开涉及制冷***技术领域,具体而言,涉及一种螺母座及电子膨胀阀。The present disclosure relates to the technical field of refrigeration systems, in particular, to a nut seat and an electronic expansion valve.
随着变频空调的普及,电子膨胀阀作为变频空调的主要部件,其性能好坏对空调的舒适性、节能型起到了很大的影响。相关技术中的电子膨胀阀的螺母座包括由塑料制成的螺纹件以及套设在螺纹件外周的嵌套件,螺纹件用于与丝杆螺纹连接,且通过嵌套件与阀座连接。然而,相关技术中的螺纹件和嵌套件的结合强度不足。With the popularization of frequency conversion air conditioners, electronic expansion valves are the main components of frequency conversion air conditioners, and their performance has a great impact on the comfort and energy saving of air conditioners. The nut seat of the electronic expansion valve in the related art includes a threaded part made of plastic and a nesting part sheathed on the outer periphery of the threaded part. The threaded part is used for threaded connection with the screw rod and is connected with the valve seat through the nesting part. However, the bonding strength of the screw and the insert in the related art is insufficient.
发明内容Contents of the invention
本公开实施例提供一种螺母座及电子膨胀阀,以改善螺纹件和嵌套件的结合强度。Embodiments of the present disclosure provide a nut seat and an electronic expansion valve to improve the bonding strength between the threaded part and the nested part.
本公开实施例的螺母座,应用于电子膨胀阀,所述螺母座包括螺纹件和嵌套件,螺纹件用于与所述电子膨胀阀的丝杆螺纹连接;所述螺纹件的外周面具有第一齿槽结构;嵌套件套设在所述螺纹件的外周,用于与所述电子膨胀阀的阀座连接;所述嵌套件的内周面具有第二齿槽结构,所述第二齿槽结构与所述第一齿槽结构相配合。The nut seat of the embodiment of the present disclosure is applied to an electronic expansion valve, and the nut seat includes a threaded part and a nesting part, and the threaded part is used for threaded connection with the screw rod of the electronic expansion valve; the outer peripheral surface of the threaded part has The first tooth groove structure; the nest is sleeved on the outer periphery of the threaded member for connecting with the valve seat of the electronic expansion valve; the inner peripheral surface of the nest has a second tooth groove structure, the The second alveolar structure cooperates with the first alveolar structure.
上述公开中的实施例至少具有如下优点或有益效果:The embodiments in the above disclosure have at least the following advantages or beneficial effects:
本公开实施例的螺母座,包括螺纹件和套设在螺纹件的外周的嵌套件,并且,螺纹件和嵌套件之间通过第二齿槽结构与第一齿槽结构结合。这样,增大了螺纹件和嵌套件之间的结合面积,进而提升了螺纹件和嵌套件的结合强度,确保了螺母座工作的稳定性。另外,由于嵌套件的第二齿槽结构可以一次成型制成,而无需利用切削加工,故成型效率显著提升,降低了成本。The nut seat of the embodiment of the present disclosure includes a threaded part and a nesting part sleeved on the outer periphery of the threaded part, and the threaded part and the nesting part are combined with the first toothed groove structure through the second toothed groove structure. In this way, the bonding area between the threaded part and the nesting part is increased, thereby improving the bonding strength of the threaded part and the nesting part, and ensuring the working stability of the nut seat. In addition, since the second alveolar structure of the nesting member can be formed at one time without cutting, the forming efficiency is significantly improved and the cost is reduced.
图1示出的是本公开实施例的电子膨胀阀的剖视图。FIG. 1 shows a cross-sectional view of an electronic expansion valve according to an embodiment of the present disclosure.
图2示出的是本公开实施例的螺母座的立体图。FIG. 2 shows a perspective view of a nut seat according to an embodiment of the present disclosure.
图3示出的是本公开实施例的螺母座的剖视图。Fig. 3 shows a cross-sectional view of a nut holder according to an embodiment of the present disclosure.
图4示出的是本公开实施例的螺纹件的立体图。FIG. 4 shows a perspective view of a threaded member according to an embodiment of the present disclosure.
图5示出的是本公开实施例的嵌套件的立体图。FIG. 5 shows a perspective view of a nest of embodiments of the present disclosure.
其中,附图标记说明如下:Wherein, the reference signs are explained as follows:
1、外罩1. Outer cover
11、管部11. Pipeline
12、封盖12. Cover
13、腔室13. Chamber
2、阀座2. Valve seat
21、阀口21. Valve port
22、凹部22. Concave
221、底部221. Bottom
222、侧部222. Side
25、通孔25. Through hole
3、螺母座3. Nut seat
31、螺纹件31. Screw parts
311、螺纹段311, thread segment
312、第一导向段312. The first guiding section
313、第二导向段313. The second guide section
314、第一齿槽结构314. The first alveolar structure
32、嵌套件32. Nesting kit
321、第一平面321. First Plane
322、第二齿槽结构322. Second alveolar structure
323、底壁323. Bottom Wall
324、穿孔324: perforation
325、侧壁325. side wall
326、缺口326: Gap
33、第一台阶结构33. The first step structure
34、第二台阶结构34. The second step structure
4、丝杆4. Screw rod
41、容纳槽41. Accommodating tank
5、阀针5. Valve needle
6、磁转子6. Magnetic rotor
7、止挡组件7. Stop component
71、绕柱71. Around the column
72、弹簧导轨72. Spring guide rail
73、止挡圈73. Stop ring
74、连接件74. Connector
75、第二止挡部75. The second stopper
76、第一止挡部76. The first stopper
81、弹性件81. Elastic parts
82、平衡通道82. Balance channel
91、第一连接管91. The first connecting pipe
92、第二连接管92. Second connecting pipe
93、限位件93. Limiting parts
现在将参考附图更全面地描述示例实施方式。然而,示例实施方式能够以多种形式实施,且不应被理解为限于在此阐述的实施方式;相反,提供这些实施方式使得本公开将全面和完整,并将示例实施方式的构思全面地传达给本领域的技术人员。图中相同的附图标记表示相同或类似的结构,因而将省略它们的详细描述。Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.
如图1所示,图1示出的是本公开实施例的电子膨胀阀的剖视图。本公开实施例的电子膨胀阀,包括外罩1、线圈(图中未示出)、阀座2、螺母座3、丝杆4、阀针5和磁转子6。As shown in FIG. 1 , FIG. 1 shows a cross-sectional view of an electronic expansion valve according to an embodiment of the present disclosure. The electronic expansion valve in the embodiment of the present disclosure includes a housing 1 , a coil (not shown in the figure), a valve seat 2 , a nut seat 3 , a screw rod 4 , a valve needle 5 and a magnetic rotor 6 .
可以理解的是,本公开实施例中的术语“包括”和“具有”以及它们任何变形,意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、***、产品或设备没有限定于已列出的步骤或单元,而是可选地还包括没有列出的步骤或单元,或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或组件。It can be understood that the terms "including" and "having" and any variations thereof in the embodiments of the present disclosure are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or components inherent in those processes, methods, products, or devices.
阀座2与外罩1连接,并与外罩1共同形成一腔室13。阀座2具有阀口21以及与阀口21对应设置的凹部22。线圈设置在外罩1的外周。The valve seat 2 is connected with the housing 1 and together with the housing 1 forms a chamber 13 . The valve seat 2 has a valve port 21 and a recess 22 corresponding to the valve port 21 . The coil is provided on the outer periphery of the housing 1 .
螺母座3设置在腔室13内,且设置在凹部22内。丝杆4设置在腔室13内,且与螺母座3相螺接。阀针5与丝杆4连接,用于与阀口21配合,调节阀口21的开度。磁转子6设置在腔室13内,且与线圈感应连接,并与丝杆4连接。The nut seat 3 is arranged in the cavity 13 and is arranged in the recess 22 . The screw rod 4 is arranged in the chamber 13 and screwed with the nut seat 3 . The valve needle 5 is connected with the threaded rod 4 for cooperating with the valve port 21 to adjust the opening of the valve port 21 . The magnetic rotor 6 is arranged in the chamber 13 and is inductively connected with the coil and connected with the screw rod 4 .
当线圈通电时,磁转子6能够绕自身轴线旋转,从而带动丝杆4同步旋转。丝杆4与螺母座3通过螺纹结构相对旋转时,丝杆4能够相对于螺母座3产生轴向移动,进而带动阀针5沿轴向移动,实现阀口21开度的调节。When the coil is energized, the magnetic rotor 6 can rotate around its own axis, thereby driving the screw mandrel 4 to rotate synchronously. When the threaded rod 4 and the nut seat 3 rotate relative to each other through the thread structure, the threaded rod 4 can move axially relative to the nut seat 3 , and then drive the valve needle 5 to move in the axial direction to realize the adjustment of the opening of the valve port 21 .
外罩1可以包括管部11和封盖12,封盖12设置于管部11的一端。举例来说,封盖12和管部11之间可以通过焊接方式连接,例如激光焊,但不以此为限。The housing 1 may include a tube portion 11 and a cover 12 disposed at one end of the tube portion 11 . For example, the connection between the cover 12 and the tube portion 11 may be by welding, such as laser welding, but not limited thereto.
阀座2与外罩1连接,并且阀座2和外罩1共同形成一腔室13。具体来说,阀座2与管部11的另一端连接,例如通过焊接方式。The valve seat 2 is connected to the housing 1 , and the valve seat 2 and the housing 1 jointly form a chamber 13 . Specifically, the valve seat 2 is connected to the other end of the pipe portion 11, for example by welding.
阀座2还与第一连接管91、第二连接管92连接。阀座2的阀口21设置在第一连接管91和第二连接管92之间。当阀针5封堵阀口21时,第一连接管91和第二连接管92不导通。当阀针5未封堵阀口21时,第一连接管91和第二连接管92导通。The valve seat 2 is also connected with the first connecting pipe 91 and the second connecting pipe 92 . The valve port 21 of the valve seat 2 is disposed between the first connecting pipe 91 and the second connecting pipe 92 . When the valve needle 5 blocks the valve port 21 , the first connecting pipe 91 and the second connecting pipe 92 are not connected. When the valve needle 5 is not blocking the valve port 21 , the first connecting pipe 91 and the second connecting pipe 92 are connected.
阀座2的凹部22包括底部221和侧部222,侧部222环绕底部221的外缘并沿轴向向上延伸。阀座2的底部221还具有沿厚度方向的通孔25,阀针5穿设于通孔25。The concave portion 22 of the valve seat 2 includes a bottom portion 221 and a side portion 222 , the side portion 222 surrounds the outer edge of the bottom portion 221 and extends axially upward. The bottom 221 of the valve seat 2 also has a through hole 25 along the thickness direction, and the valve needle 5 passes through the through hole 25 .
在一实施方式中,阀座2为金属件。In one embodiment, the valve seat 2 is a metal piece.
可选地,当螺母座3的下端部设置在凹部22时,侧部222的上端能够沿径向向内产生形变以将螺母座3限定在凹部22内,避免螺母座3沿轴向与阀座2脱离。Optionally, when the lower end of the nut seat 3 is disposed in the recess 22, the upper end of the side portion 222 can be deformed radially inward to limit the nut seat 3 in the recess 22, preventing the nut seat 3 from axially contacting the valve. Seat 2 disengages.
可选地,由下至上,阀座2的侧部222的壁厚是逐渐变薄的。这样,当螺母座3与阀座2连接时,侧部222的上端更容易发生形变。具体来说,可以采用压装的方式,将螺母座3与阀座2相铆接。当螺母座3安装在阀座2的凹部22内后,沿轴向挤压阀座2的侧部222,使得侧部222能够沿径向产生形变,最终实现铆接。Optionally, the wall thickness of the side portion 222 of the valve seat 2 gradually becomes thinner from bottom to top. In this way, when the nut seat 3 is connected with the valve seat 2, the upper end of the side portion 222 is more likely to be deformed. Specifically, the nut seat 3 and the valve seat 2 may be riveted together by means of press fitting. After the nut seat 3 is installed in the concave portion 22 of the valve seat 2, the side portion 222 of the valve seat 2 is pressed in the axial direction, so that the side portion 222 can be deformed in the radial direction, and riveting is finally realized.
螺母座3还具有平衡通道82,平衡通道82贯穿螺母座3的内周面和外周面。The nut seat 3 also has a balance channel 82 , and the balance channel 82 runs through the inner and outer peripheral surfaces of the nut seat 3 .
通过平衡通道82的设置,可使阀座2内的空间与腔室13相连通,这样阀针5沿轴向移动的过程中不会受到由于气压不平衡产生的阻力。Through the arrangement of the balance passage 82, the space in the valve seat 2 can be communicated with the chamber 13, so that the valve needle 5 will not be subjected to resistance due to air pressure imbalance during the axial movement.
丝杆4还包括容纳槽41。电子膨胀阀还包括弹性件81,弹性件81设置在容纳槽41内,且一端与容纳槽41的槽底抵接,另一端与阀针5抵接,以使阀针5具有远离丝杆4的趋势。阀针5的一端被限定在容纳槽41内。The screw rod 4 also includes a receiving groove 41 . The electronic expansion valve also includes an elastic member 81, which is arranged in the receiving groove 41, and one end of the elastic member abuts against the bottom of the accommodating groove 41, and the other end abuts against the valve needle 5, so that the valve needle 5 has a distance away from the screw rod 4. the trend of. One end of the valve needle 5 is defined in the receiving groove 41 .
通过在丝杆4和阀针5之间设置弹性件81,可使阀针5与丝杆4之间为软接触而非硬接触。当丝杆4带动阀针5封堵阀口21时,由于弹性件81的作用,使得丝杆4继续向下移动的过程中,阀针5并不会继续向下移动,而是会压缩弹性件81,从而确保阀针5并不会锁紧在阀口21,并且丝杆4与螺母座3也不会螺纹锁紧。这样,当沿相反方向移动时,丝杆4与螺母座3仍能够轻松转动,进而带动阀针5向上移动而打开阀口21。By arranging the elastic member 81 between the screw rod 4 and the valve needle 5, the valve needle 5 and the screw rod 4 can be in soft contact instead of hard contact. When the screw rod 4 drives the valve needle 5 to block the valve port 21, due to the action of the elastic member 81, when the screw rod 4 continues to move downward, the valve needle 5 will not continue to move downward, but will compress the elastic 81, so as to ensure that the valve needle 5 will not be locked on the valve port 21, and the screw rod 4 and the nut seat 3 will not be screwed into lock. In this way, when moving in the opposite direction, the screw rod 4 and the nut seat 3 can still rotate easily, and then drive the valve needle 5 to move upwards to open the valve port 21 .
在一实施方式中,弹性件81为压簧,但不以此为限。In one embodiment, the elastic member 81 is a compression spring, but not limited thereto.
在一实施方式中,电子膨胀阀还包括限位件93,限位件93设置在容纳槽41的槽壁,并邻近该容纳槽41的槽口。阀针5的一端设有凸缘,凸缘与限位件93配合,可将阀针5具有凸缘的一端限定在容纳槽41内,避免该阀针5从容纳槽41脱出。In one embodiment, the electronic expansion valve further includes a limiting member 93 , and the limiting member 93 is disposed on the groove wall of the receiving groove 41 and adjacent to the notch of the receiving groove 41 . One end of the valve needle 5 is provided with a flange, and the flange cooperates with the stopper 93 to limit the end of the valve needle 5 with the flange in the receiving groove 41 to prevent the valve needle 5 from coming out of the receiving groove 41 .
举例来说,限位件93可以为套筒形状,其外壁面连接容纳槽41的槽壁且套设在阀针5的外周。For example, the limiting member 93 may be in the shape of a sleeve, the outer wall of which is connected to the groove wall of the receiving groove 41 and sleeved on the outer periphery of the valve needle 5 .
本公开实施例的电子膨胀阀还包括止挡组件7,止挡组件7设置在腔室13内,且连接在封盖12,用于限定丝杆4沿轴向的移动范围。The electronic expansion valve of the embodiment of the present disclosure further includes a stopper assembly 7 , which is arranged in the cavity 13 and connected to the cover 12 to limit the movement range of the screw rod 4 in the axial direction.
止挡组件7包括绕柱71、弹簧导轨72、止挡圈73和连接件74,绕柱71的一端与封盖12的内壁面连接,且沿轴向延伸。弹簧导轨72螺旋地绕设于绕柱71的外周。连接件74与丝杆4连接。止挡圈73与连接件74抵靠,且螺旋地绕设于绕柱71的外周,并且弹簧导轨72的两端分别具有第一止挡部76和第二止挡部75。同时止挡圈73能够在弹簧导轨72形成的螺旋槽内螺旋运动。The stop assembly 7 includes a post 71 , a spring rail 72 , a stop ring 73 and a connecting piece 74 . One end of the post 71 is connected to the inner wall of the cover 12 and extends in the axial direction. The spring guide rail 72 is helically wound around the outer periphery of the column 71 . The connecting piece 74 is connected with the screw rod 4 . The stop ring 73 abuts against the connecting member 74 and is helically wound around the outer circumference of the column 71 , and the two ends of the spring guide rail 72 respectively have a first stop portion 76 and a second stop portion 75 . At the same time, the stop ring 73 can spirally move in the spiral groove formed by the spring guide rail 72 .
当丝杆4绕自身轴线旋转时,止挡圈73沿着弹簧导轨72的螺旋槽盘绕。丝杆4朝着封盖12移动的过程中,当止挡圈73接触第一止挡部76时,即代表丝杆4运动至上限位点,此时丝杆4不能继续向上移动。丝杆4朝着远离封盖12移动的过程中,当止挡圈73接触第二止挡部75时,即代表丝杆4运动至下限位点,此时丝杆4不能继续向下移动。When the threaded mandrel 4 rotates around its own axis, the stop ring 73 coils along the helical groove of the spring rail 72 . During the movement of the screw rod 4 towards the cover 12 , when the stop ring 73 touches the first stop portion 76 , it means that the screw rod 4 has moved to the upper limit point, and the screw rod 4 cannot continue to move upward at this time. When the threaded rod 4 moves away from the cover 12 , when the stop ring 73 touches the second stop portion 75 , it means that the threaded rod 4 has moved to the lower limit point, and the threaded rod 4 cannot continue to move downwards at this time.
如图2至图5所示,图2示出的是本公开实施例的螺母座的立体图。图3示出的是本公开实施例的螺母座的剖视图。图4示出的是本公开实施例的螺纹件的立体图。图5示出的是本公开实施例的嵌套件的立体图。As shown in FIG. 2 to FIG. 5 , FIG. 2 shows a perspective view of a nut seat according to an embodiment of the present disclosure. Fig. 3 shows a cross-sectional view of a nut holder according to an embodiment of the present disclosure. FIG. 4 shows a perspective view of a threaded member according to an embodiment of the present disclosure. FIG. 5 shows a perspective view of a nest of embodiments of the present disclosure.
本公开实施例的螺母座3,包括螺纹件31和嵌套件32。螺纹件31用于与丝杆4螺纹连接;螺纹件31的外周面具有第一齿槽结构314。嵌套件32套设在螺纹件31的外周,用于与阀座2连接。嵌套件32的内周面具有第二齿槽结构322,第二齿槽结构322与第一齿槽结构314相配合。The nut seat 3 of the embodiment of the present disclosure includes a threaded part 31 and a nested part 32 . The threaded part 31 is used for threaded connection with the screw rod 4 ; the outer peripheral surface of the threaded part 31 has a first alveolar structure 314 . The nesting part 32 is sleeved on the outer periphery of the threaded part 31 for connecting with the valve seat 2 . The inner peripheral surface of the nesting part 32 has a second tooth groove structure 322 , and the second tooth groove structure 322 is matched with the first tooth groove structure 314 .
可以理解的是,第二齿槽结构322与第一齿槽结构314相配合是指第一齿槽结构314 的齿部伸入第二齿槽结构322的槽部,第二齿槽结构322的齿部伸入第一齿槽结构314的槽部。It can be understood that the cooperation between the second alveolar structure 322 and the first alveolar structure 314 means that the teeth of the first alveolar structure 314 extend into the grooves of the second alveolar structure 322 , and the teeth of the second alveolar structure 322 The tooth portion extends into the groove portion of the first tooth groove structure 314 .
本公开实施例的螺母座3,包括螺纹件31和套设在螺纹件31的外周的嵌套件32,并且,螺纹件31和嵌套件32之间通过第二齿槽结构322与第一齿槽结构314结合。这样,增大了螺纹件31和嵌套件32之间的结合面积,进而提升了螺纹件31和嵌套件32的结合强度,确保了螺母座3工作的稳定性。另外,由于嵌套件32的第二齿槽结构322可以一次成型制成,而无需利用切削加工,故成型效率显著提升,且降低了成本。The nut seat 3 of the embodiment of the present disclosure includes a threaded part 31 and a nesting part 32 sleeved on the outer periphery of the threaded part 31, and the threaded part 31 and the nesting part 32 are connected to the first through the second alveolar structure 322. The alveolar structure 314 is combined. In this way, the bonding area between the threaded part 31 and the nesting part 32 is increased, thereby improving the bonding strength of the threaded part 31 and the nesting part 32 , ensuring the working stability of the nut seat 3 . In addition, since the second alveolar structure 322 of the nesting member 32 can be formed at one time without cutting, the forming efficiency is significantly improved and the cost is reduced.
需要说明的是,一次成型是指注塑成型、模压成型等。It should be noted that one-shot molding refers to injection molding, compression molding, and the like.
嵌套件32包括底壁323和侧壁325。底壁323具有沿厚度方向的穿孔324,螺纹件31穿设在穿孔324中。侧壁325环绕底壁323的边缘,并且自底壁323向上延伸。第二齿槽结构322设置在侧壁325的内壁面。The nest 32 includes a bottom wall 323 and a side wall 325 . The bottom wall 323 has a through hole 324 along the thickness direction, and the screw member 31 passes through the through hole 324 . The side wall 325 surrounds the edge of the bottom wall 323 and extends upward from the bottom wall 323 . The second alveolar structure 322 is disposed on the inner surface of the side wall 325 .
侧壁325设有缺口326,缺口326贯穿侧壁325的内壁面和外壁面,且贯穿侧壁325背离底壁323的顶面。缺口326的数量为一个或多个,其中“多个”是指两个或两个以上。The side wall 325 defines a notch 326 , the notch 326 runs through the inner wall surface and the outer wall surface of the side wall 325 , and runs through the top surface of the side wall 325 away from the bottom wall 323 . The number of gaps 326 is one or more, wherein "multiple" means two or more.
螺纹件31具有平衡通道82,平衡通道82贯穿螺纹件31的内周面和外周面。缺口326与平衡通道82的位置对应设置。The threaded part 31 has a balance channel 82 , and the balanced channel 82 runs through the inner and outer peripheral surfaces of the threaded part 31 . The notch 326 is set corresponding to the position of the balance channel 82 .
在一实施方式中,侧壁325上具有两个缺口326,其中一个缺口326与平衡通道82对应设置。两个缺口326位于侧壁325围成的圆环的直径上,并将第二齿槽结构322分隔为两个部分。In one embodiment, the side wall 325 has two notches 326 , one of which is corresponding to the balance channel 82 . The two notches 326 are located on the diameter of the circle surrounded by the sidewall 325 and separate the second alveolar structure 322 into two parts.
在本实施例中,通过在侧壁325上设置两个对称设置的缺口326,使得嵌套件32在成型时所受到的模压力更加均匀。In this embodiment, by providing two symmetrically arranged notches 326 on the side wall 325 , the molding pressure on the nesting member 32 during molding is more uniform.
当然,可以理解的是,在其他实施例中,侧壁325上的缺口326的数量还可以为一个、三个或其他数量等。Of course, it can be understood that in other embodiments, the number of notches 326 on the side wall 325 can also be one, three or other numbers.
可以理解的是,缺口326的数量大于或等于平衡通道82的数量。It can be understood that the number of notches 326 is greater than or equal to the number of balancing channels 82 .
如图3所示,底壁323和侧壁325的结合处形成有第二台阶结构34,螺纹件31的外周具有与第二台阶结构34配合的第一台阶结构33。As shown in FIG. 3 , a second stepped structure 34 is formed at the junction of the bottom wall 323 and the side wall 325 , and the outer periphery of the screw member 31 has a first stepped structure 33 matching the second stepped structure 34 .
通过在螺纹件31与嵌套件32之间的位置设置相配合的第一台阶结构33和第二台阶结构34,可进一步增大螺纹件31和嵌套件32之间的结合面积,提升结合强度。By setting the matched first stepped structure 33 and the second stepped structure 34 at the position between the threaded part 31 and the nested part 32, the bonding area between the threaded part 31 and the nested part 32 can be further increased, and the combination can be improved. strength.
螺纹件31包括螺纹段311、第一导向段312和第二导向段313。第一导向段312设置在螺纹段311的一端,第二导向段313设置在螺纹段311的另一端。螺纹段311具有内螺纹结构,内螺纹结构与丝杆4的外螺纹结构相螺接。当线圈通电时,磁转子6能够绕自身 轴线旋转,从而带动丝杆4同步旋转。丝杆4与螺纹件31的螺纹段311通过螺纹结构相对旋转时,丝杆4能够相对于螺母座3产生轴向移动,进而带动阀针5沿轴向移动,实现阀口21开度的调节。The threaded member 31 includes a threaded section 311 , a first guiding section 312 and a second guiding section 313 . The first guiding section 312 is arranged at one end of the threaded section 311 , and the second guiding section 313 is arranged at the other end of the threaded section 311 . The threaded section 311 has an internal thread structure, and the internal thread structure is screwed with the external thread structure of the screw rod 4 . When the coil is energized, the magnetic rotor 6 can rotate around its own axis, thereby driving the screw mandrel 4 to rotate synchronously. When the screw 4 and the threaded section 311 of the screw 31 rotate relative to each other through the thread structure, the screw 4 can move axially relative to the nut seat 3, and then drive the valve needle 5 to move in the axial direction to realize the adjustment of the opening of the valve port 21 .
沿轴向丝杆4可移动地穿设于第一导向段312。沿轴向阀针5可移动地穿设于第二导向段313。部分的第二导向段313穿设于阀座2的通孔25。The threaded rod 4 is movably passed through the first guide section 312 along the axial direction. The valve needle 5 is movably passed through the second guide section 313 along the axial direction. A part of the second guide section 313 passes through the through hole 25 of the valve seat 2 .
第一齿槽结构314设置在第二导向段313的外周。平衡通道82设置在第二导向段313上,且贯穿第二导向段313的内壁面和外壁面。The first tooth groove structure 314 is disposed on the outer periphery of the second guiding section 313 . The balance channel 82 is disposed on the second guide section 313 and runs through the inner wall surface and the outer wall surface of the second guide section 313 .
嵌套件32和螺纹段311沿轴向错开。这样,当嵌套件32安装入阀座2的凹部22内时,可避免螺纹段311受到挤压而变形。The nesting part 32 and the threaded segment 311 are axially staggered. In this way, when the insert 32 is installed into the recess 22 of the valve seat 2, the threaded section 311 can be prevented from being squeezed and deformed.
如图5所示,嵌套件32的外周面和凹部22之间还具有限位结构,限位结构用于限制螺母座3和阀座2产生周向旋转。As shown in FIG. 5 , there is a limiting structure between the outer peripheral surface of the nesting member 32 and the recess 22 , and the limiting structure is used to limit the circumferential rotation of the nut seat 3 and the valve seat 2 .
在一实施方式中,限位结构包括第一平面321,第一平面321设置在嵌套件32的侧壁325的外周面上,并且第一平面321朝向阀座2的凹部22的侧壁。通过第一平面321与凹部22的侧壁的作用,可防止嵌套件32与阀座2产生周向旋转。In one embodiment, the limiting structure includes a first plane 321 , the first plane 321 is disposed on the outer peripheral surface of the side wall 325 of the nest 32 , and the first plane 321 faces the side wall of the recess 22 of the valve seat 2 . Through the action of the first plane 321 and the sidewall of the recess 22 , the nesting part 32 and the valve seat 2 can be prevented from rotating in the circumferential direction.
第一平面321的数量可以为多个,其中“多个”是指两个或两个以上。The number of first planes 321 may be multiple, wherein "multiple" means two or more.
在其他实施方式中,限位结构也可以包括凸起和与凸起配合的槽。凸起可以设置在嵌套件32的外周面上,槽可以设置在凹部22的侧壁2上。In other embodiments, the limiting structure may also include a protrusion and a groove that cooperates with the protrusion. Protrusions may be provided on the outer peripheral surface of the nest 32 , and grooves may be provided on the side wall 2 of the recess 22 .
嵌套件32为通过粉末冶金压铸成型的金属件或注塑成型的金属件。承上所述,由于嵌套件32具有显露于外的第二齿槽结构322,故嵌套件32可通过压铸或注塑等一次成型工艺制成,而无需再利用切削加工,显著提升了成型效率。The nesting part 32 is a metal part formed by powder metallurgy die-casting or injection molding. Based on the above, since the nesting part 32 has the second alveolar structure 322 exposed outside, the nesting part 32 can be made by one-time molding process such as die-casting or injection molding without using cutting process, which significantly improves the molding process. efficiency.
螺纹件31可以为塑料件,嵌套件32可以为金属件。螺纹件31和嵌套件32通过一体注塑成型。采用模具加工螺纹件31,可以保证螺纹质量,注塑不仅效率高,螺纹质量稳定性更好。The threaded part 31 can be a plastic part, and the nesting part 32 can be a metal part. The threaded part 31 and the nested part 32 are integrally injection molded. The use of molds to process the threaded part 31 can ensure the thread quality, and injection molding not only has high efficiency, but also has better thread quality stability.
在一实施方式中,螺纹件31可以由聚苯硫醚(PPS)制成,但不以此为限。In one embodiment, the screw 31 may be made of polyphenylene sulfide (PPS), but not limited thereto.
可以理解的是,嵌套件32具有第二齿槽结构322的情况下,将嵌套件32放入模具中,然后将注塑材料灌入模具的模腔,形成螺纹件31和嵌套件32一体的部件,注塑材料进入到嵌套件32的第二齿槽结构322时,塑料材料会充分地填充第二齿槽结构322,进而在螺纹件31的外周对应形成第一齿槽结构314。这样,可增大螺纹件31与嵌套件32的结合面积,提升结合强度。It can be understood that, when the nesting part 32 has the second alveolar structure 322, the nesting part 32 is put into the mold, and then the injection molding material is poured into the mold cavity of the mold to form the threaded part 31 and the nesting part 32 For an integral part, when the injection molding material enters the second alveolar structure 322 of the nesting part 32 , the plastic material will fully fill the second alveolar structure 322 , and then form the first alveolar structure 314 correspondingly on the outer periphery of the threaded part 31 . In this way, the bonding area between the threaded part 31 and the nesting part 32 can be increased, and the bonding strength can be improved.
可以理解的是,本公开提供的各个实施例/实施方式在不产生矛盾的情况下可以相互 组合,此处不再一一举例说明。It can be understood that the various embodiments/implementations provided in the present disclosure can be combined with each other if no contradiction arises, and no further examples are given here.
在公开实施例中,术语“第一”、“第二”、“第三”仅用于描述的目的,而不能理解为指示或暗示相对重要性;术语“多个”则指两个或两个以上,除非另有明确的限定。术语“安装”、“相连”、“连接”、“固定”等术语均应做广义理解,例如,“连接”可以是固定连接,也可以是可拆卸连接,或一体地连接;“相连”可以是直接相连,也可以通过中间媒介间接相连。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在公开实施例中的具体含义。In the disclosed embodiments, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance; the term "plurality" refers to two or two more than one, unless otherwise expressly limited. The terms "installation", "connection", "connection", "fixed" and other terms should be interpreted in a broad sense, for example, "connection" can be fixed connection, detachable connection, or integral connection; "connection" can be directly or indirectly through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the disclosed embodiments according to specific situations.
公开实施例的描述中,需要理解的是,术语“上”、“下”、“左”、“右”、“前”、“后”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述公开实施例和简化描述,而不是指示或暗示所指的装置或单元必须具有特定的方向、以特定的方位构造和操作,因此,不能理解为对公开实施例的限制。In the description of the disclosed embodiments, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear" are based on those shown in the accompanying drawings. Orientation or positional relationship is only for the convenience of describing the disclosed embodiments and simplifying the description, and does not indicate or imply that the referred device or unit must have a specific orientation, be constructed and operated in a specific orientation, and therefore, cannot be construed as a reference to the disclosed implementation. Example limitations.
在本说明书的描述中,术语“一个实施例”、“一些实施例”、“具体实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或特点包含于公开实施例的至少一个实施例或示例中。在本说明书中,对上述术语的示意性表述不一定指的是相同的实施例或实例。而且,描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。In the description of this specification, descriptions of the terms "one embodiment", "some embodiments", "specific embodiments" and the like mean that specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in the disclosed implementation. In at least one embodiment or example of an example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
以上仅为公开实施例的优选实施例而已,并不用于限制公开实施例,对于本领域的技术人员来说,公开实施例可以有各种更改和变化。凡在公开实施例的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在公开实施例的保护范围之内。The above are only preferred embodiments of the disclosed embodiments, and are not intended to limit the disclosed embodiments. For those skilled in the art, various modifications and changes may be made to the disclosed embodiments. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the disclosed embodiments shall be included in the protection scope of the disclosed embodiments.
Claims (10)
- 一种螺母座,应用于电子膨胀阀,其特征在于,所述螺母座包括:A nut seat applied to an electronic expansion valve, characterized in that the nut seat includes:螺纹件,所述螺纹件的外周面具有第一齿槽结构;以及a threaded part, the outer peripheral surface of the threaded part has a first alveolar structure; and嵌套件,套设在所述螺纹件的外周,用于与所述电子膨胀阀的阀座连接;所述嵌套件的内周面具有第二齿槽结构,所述第二齿槽结构与所述第一齿槽结构相配合。A nesting piece, sleeved on the outer periphery of the threaded member, for connecting with the valve seat of the electronic expansion valve; the inner peripheral surface of the nesting piece has a second tooth groove structure, and the second tooth groove structure Cooperate with the first alveolar structure.
- 根据权利要求1所述的螺母座,其特征在于,所述嵌套件包括:The nut seat according to claim 1, wherein the nesting part comprises:底壁,具有沿厚度方向的穿孔,所述螺纹件穿设在所述穿孔中;以及the bottom wall has a perforation along the thickness direction, and the screw is passed through the perforation; and侧壁,所述侧壁环绕所述底壁的边缘,所述第二齿槽结构设置在所述侧壁的内壁面。A side wall, the side wall surrounds the edge of the bottom wall, and the second alveolar structure is arranged on the inner wall surface of the side wall.
- 根据权利要求2所述的螺母座,其特征在于,所述侧壁设有缺口,所述缺口贯穿所述侧壁的内壁面和外壁面,且贯穿所述侧壁背离所述底壁的顶面;The nut seat according to claim 2, wherein the side wall is provided with a notch, and the notch runs through the inner wall surface and the outer wall surface of the side wall, and runs through the top of the side wall away from the bottom wall. noodle;所述螺纹件具有平衡通道,所述平衡通道贯穿所述螺纹件的内周面和外周面;所述缺口与所述平衡通道的位置对应设置。The threaded part has a balance channel, and the balanced channel runs through the inner peripheral surface and the outer peripheral surface of the threaded part; the notch is set corresponding to the position of the balanced channel.
- 根据权利要求3所述的螺母座,其特征在于,所述螺纹件具有至少一个所述平衡通道,所述侧壁上具有至少一个所述缺口,所述缺口的数量大于或等于所述平衡通道的数量,其中一个所述缺口与所述平衡通道对应设置。The nut holder according to claim 3, wherein the threaded member has at least one balancing channel, and the side wall has at least one notch, and the number of notches is greater than or equal to the balancing channel number, one of the gaps is set corresponding to the balance channel.
- 根据权利要求2所述的螺母座,其特征在于,所述底壁和所述侧壁的结合处形成有第二台阶结构,所述螺纹件的外周具有与所述第二台阶结构配合的第一台阶结构。The nut seat according to claim 2, wherein a second stepped structure is formed at the junction of the bottom wall and the side wall, and the outer periphery of the screw has a first stepped structure matched with the second stepped structure. a stepped structure.
- 根据权利要求1所述的螺母座,其特征在于,所述螺纹件包括:The nut seat according to claim 1, wherein the threaded part comprises:螺纹段,用于与所述电子膨胀阀的丝杆螺纹连接;A threaded section, used for threaded connection with the screw rod of the electronic expansion valve;第一导向段,设置在所述螺纹段的一端,用于供所述丝杆穿设其中;a first guide section, arranged at one end of the threaded section, for passing the screw rod through;第二导向段,设置在所述螺纹段的另一端,用于供所述电子膨胀阀的阀针穿设其中;所述第一齿槽结构设置在所述第二导向段的外周。The second guiding section is arranged at the other end of the threaded section, and is used for the needle of the electronic expansion valve to pass through; the first tooth groove structure is arranged on the outer periphery of the second guiding section.
- 根据权利要求6所述的螺母座,其特征在于,所述螺纹件还具有平衡通道,所述平衡通道设置在所述第二导向段上,且贯穿所述第二导向段的内壁面和外壁面。The nut seat according to claim 6, wherein the threaded part also has a balance channel, the balance channel is arranged on the second guide section, and runs through the inner wall surface and the outer surface of the second guide section. wall.
- 根据权利要求1所述的螺母座,其特征在于,所述螺纹件为塑料件,所述嵌套件为金属件,所述螺纹件与所述嵌套件通过一体注塑成型。The nut holder according to claim 1, wherein the threaded part is a plastic part, the nesting part is a metal part, and the threaded part and the nesting part are integrally injection molded.
- 根据权利要求1所述的螺母座,其特征在于,所述嵌套件为通过粉末冶金压铸成型的金属件或注塑成型的金属件。The nut seat according to claim 1, characterized in that, the nesting part is a metal part formed by powder metallurgy die-casting or an injection-molded metal part.
- 一种电子膨胀阀,其特征在于,包括如权利要求1至9任一项所述的螺母座。An electronic expansion valve, characterized by comprising the nut seat according to any one of claims 1-9.
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CN202220243115.3 | 2022-01-28 | ||
CN202220243115.3U CN219366819U (en) | 2022-01-28 | 2022-01-28 | Nut seat and electronic expansion valve |
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Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000257740A (en) * | 1999-03-05 | 2000-09-19 | Pacific Ind Co Ltd | Electric expansion valve |
CN112524261A (en) * | 2020-12-14 | 2021-03-19 | 广东威灵电机制造有限公司 | Electronic expansion valve and refrigeration equipment |
CN113339511A (en) * | 2020-03-03 | 2021-09-03 | 浙江盾安禾田金属有限公司 | Electronic expansion valve nut seat structure and mounting method thereof |
CN215371028U (en) * | 2021-07-13 | 2021-12-31 | 广东威灵电机制造有限公司 | Electronic expansion valve and refrigeration equipment |
CN215983356U (en) * | 2021-08-31 | 2022-03-08 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
CN215983361U (en) * | 2021-08-31 | 2022-03-08 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve and refrigerating system thereof |
CN215983357U (en) * | 2021-08-31 | 2022-03-08 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
CN215983359U (en) * | 2021-08-31 | 2022-03-08 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
CN215983362U (en) * | 2021-08-31 | 2022-03-08 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve and air conditioning unit thereof |
-
2022
- 2022-01-28 CN CN202220243115.3U patent/CN219366819U/en active Active
-
2023
- 2023-01-09 WO PCT/CN2023/071414 patent/WO2023143027A1/en unknown
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000257740A (en) * | 1999-03-05 | 2000-09-19 | Pacific Ind Co Ltd | Electric expansion valve |
CN113339511A (en) * | 2020-03-03 | 2021-09-03 | 浙江盾安禾田金属有限公司 | Electronic expansion valve nut seat structure and mounting method thereof |
CN112524261A (en) * | 2020-12-14 | 2021-03-19 | 广东威灵电机制造有限公司 | Electronic expansion valve and refrigeration equipment |
CN215371028U (en) * | 2021-07-13 | 2021-12-31 | 广东威灵电机制造有限公司 | Electronic expansion valve and refrigeration equipment |
CN215983356U (en) * | 2021-08-31 | 2022-03-08 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
CN215983361U (en) * | 2021-08-31 | 2022-03-08 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve and refrigerating system thereof |
CN215983357U (en) * | 2021-08-31 | 2022-03-08 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
CN215983359U (en) * | 2021-08-31 | 2022-03-08 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
CN215983362U (en) * | 2021-08-31 | 2022-03-08 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve and air conditioning unit thereof |
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