CN218718803U - Electronic expansion valve rotor assembly - Google Patents
Electronic expansion valve rotor assembly Download PDFInfo
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- CN218718803U CN218718803U CN202122264150.1U CN202122264150U CN218718803U CN 218718803 U CN218718803 U CN 218718803U CN 202122264150 U CN202122264150 U CN 202122264150U CN 218718803 U CN218718803 U CN 218718803U
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- valve
- seat
- electronic expansion
- rotor assembly
- spring
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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
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Abstract
The utility model relates to an electronic expansion valve rotor assembly, include: the valve comprises a shell assembly, a magnetic ring, a spring guide rail, a screw rod, a valve needle seat, a nut, a first flow pipe and a second flow pipe; the valve needle base is provided with a valve hole for inserting the valve needle; the nut and the valve needle seat are fixed to the shell assembly; the housing assembly includes: a housing and a valve seat; the housing is fixed to the valve seat; the valve seat is provided with a valve cavity; the first flow pipe is communicated to the valve cavity; the second flow pipe is communicated to the valve cavity through the valve hole; one end of the first flow pipe communicated with the valve cavity is defined with a first flow pipe inner flow hole; the upper end of the nut is fixed to the valve seat; the lower end of the nut is a guide thread section; the guide threaded section is provided with an internal threaded hole penetrating through the guide threaded section; the upper end of the nut is positioned above the inner flow hole of the first flow pipe; the guide thread segment extends from top to bottom beyond the lower part of the inner flow hole of the first flow pipe. The utility model discloses an useful part lies in, strengthens the stability of electronic expansion valve work.
Description
Technical Field
The utility model relates to an electronic expansion valve rotor assembly.
Background
An electronic expansion valve is an important component in a cooling/heating system, and is mainly used for regulating the flow rate of a working fluid (refrigerant fluid).
The electronic expansion valve rotor assembly is an important part of the electronic expansion valve. Electronic expansion valve rotor assemblies typically include: the device comprises a shell assembly, a magnetic ring, a spring guide rail, a screw rod, a valve needle seat, a nut, a first flow pipe and a second flow pipe. The magnetic ring, the spring guide rail and the screw rod are fixed into a whole and defined as a core piece. The core piece is rotatably arranged in the shell assembly and can slide along the rotation axis of the core piece; the valve needle is mounted to the core member. The valve needle seat is provided with a valve hole for inserting the valve needle. The nut and the needle seat are secured to the housing assembly. The housing assembly includes: a housing and a valve seat. The housing is secured to the valve seat. The valve seat is formed with a valve cavity. The first flow pipe is communicated to the valve cavity. The second flow pipe is communicated to the valve cavity through the valve hole. The valve needle is driven to move by the rotation of the magnetic ring so as to open or close the valve hole.
In the conventional rotor assembly of the electronic expansion valve, fluid in the first flow pipe impacts the valve needle transversely, so that the electronic expansion valve has poor working stability.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electronic expansion valve rotor assembly to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above purpose, the utility model provides a following technical scheme:
an electronic expansion valve rotor assembly comprising: the valve comprises a shell assembly, a magnetic ring, a spring guide rail, a screw rod, a valve needle seat, a nut, a first flow pipe and a second flow pipe; the magnetic ring, the spring guide rail and the screw rod are fixed into a whole and defined as a core piece; the core piece is rotatably arranged in the shell assembly and can slide along the rotating axis of the core piece; the valve needle is mounted to the core member; the valve needle base is provided with a valve hole for inserting the valve needle; the nut and the valve needle seat are fixed to the shell assembly; the housing assembly includes: a housing and a valve seat; the housing is fixed to the valve seat; the valve seat is provided with a valve cavity; the first flow pipe is communicated to the valve cavity; the second flow pipe is communicated to the valve cavity through the valve hole;
one end of the first flow pipe communicated with the valve cavity is defined with a first flow pipe inner flow hole; the upper end of the nut is fixed to the valve seat; the lower end of the nut is a guide thread section; the guide threaded section is provided with an internal threaded hole penetrating through the guide threaded section; the upper end of the nut is positioned above the inner flow hole of the first flow pipe; the guide thread segment extends from top to bottom beyond the lower part of the inner flow hole of the first flow pipe.
As a further aspect of the present invention: a drainage groove is formed at the top of the valve needle base; the cross-sectional area of the drainage groove is gradually enlarged from the groove bottom to the groove opening; the groove bottom of the drainage groove forms a valve hole.
As a further aspect of the present invention: the valve bore includes a beveled bore which engages the valve needle.
As a further aspect of the present invention: the valve needle file includes: a coarse section and a fine section; the thick section and the thin section form a step structure; the thick section is fixed to the valve seat, and the step surface of the step structure formed by the thick section and the thin section is lower than the bottom surface of the valve seat; the second flow tube is sleeved to the thin section.
As a further aspect of the present invention: electronic expansion valve rotor assembly still includes: the fixing frame is used for mounting the electronic expansion valve rotor assembly; the mount is welded to the valve seat.
As a further aspect of the present invention: electronic expansion valve rotor assembly still includes: a supporting base; the supporting seat is arranged in the shell; the supporting seat is provided with a through hole which is communicated with the top space of the supporting seat and the bottom space of the supporting seat.
As a further aspect of the present invention: the supporting seat is provided with a positioning guide shaft for guiding the spring guide rail; the spring guide rail is sleeved on the periphery of the positioning guide shaft.
As a further aspect of the present invention: the supporting seat is provided with a stop rod; electronic expansion valve rotor assembly still includes: a slip ring; the slip ring is slidably mounted to the stop rod; the slip ring can be sleeved on the spring guide rail in a rotating rod mode.
As a further aspect of the present invention: electronic expansion valve rotor assembly still includes: a valve needle spring and a spring support seat; the valve needle includes: a positioning block part; the spring guide rail and the screw rod jointly form a spring cavity for accommodating the valve needle spring and the spring support seat; the positioning block part and the spring supporting seat are slidably arranged in the spring cavity; the valve needle spring is abutted to the valve needle through the spring supporting seat.
As a further aspect of the present invention: the outer wall of the shell is inwards protruded to form a positioning structure for positioning the supporting seat.
Compared with the prior art, the beneficial effects of the utility model are that: the working stability of the electronic expansion valve is enhanced.
The height of the rotor assembly of the electronic expansion valve can be reduced, and the working stability of the electronic expansion valve can be improved and enhanced. Compared with the prior art, the noise is lower.
Drawings
FIG. 1 is a schematic view of an electronic expansion valve rotor assembly;
fig. 2 is an enlarged view of a portion of one of the electronic expansion valve rotor assemblies of fig. 1.
The electronic expansion valve rotor assembly 100, the housing assembly 10, the housing 11, the valve seat 12, the valve cavity 121, the magnetic ring 21, the spring guide 22, the sliding ring 221, the needle spring 222, the spring support 223, the screw 23, the needle 30, the positioning block 31, the valve needle seat 40, the drainage groove 41, the thick section 42, the thin section 43, the nut 50, the guiding thread section 51, the first flow pipe 60, the first flow pipe inner flow hole 61, the second flow pipe 70, the fixing frame 80, the support 90, the positioning guide shaft 91, the stop rod 92 and the through hole 93.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and 2, an electronic expansion valve rotor assembly 100 comprises: the magnetic valve comprises a shell assembly 10, a magnetic ring 21, a spring guide 22, a screw rod 23, a valve needle 30, a valve needle seat 40, a nut 50, a first flow pipe 60 and a second flow pipe 70.
The magnetic ring 21, the spring guide 22 and the screw 23 are fixed as a whole and defined as a core. The core is rotatably disposed within the housing assembly 10 and is slidable along the axis of rotation of the core. The valve needle 30 is mounted to the core member. The movement of the core piece brings the needle 30 into motion. The valve needle holder 40 is formed with a valve hole into which the valve needle 30 is inserted.
As a specific embodiment, the nut 50 and the valve needle holder 40 are fixed to the housing assembly 10. The housing assembly 10 includes: a housing 11 and a valve seat 12. Specifically, the nut 50 and the needle seat 40 are fixed to the valve seat 12. The housing 11 is fixed to the valve seat 12. The valve seat 12 is formed with a valve chamber 121. The first flow tube 60 is connected to the valve chamber 121. The second flow tube 70 communicates through a valve bore to the valve chamber 121. The first and second flow tubes may be part of a valve seat formed by the valve seat or may be mounted to the valve seat as separate pieces. As a specific embodiment, the second flow tube 70 is mounted to the valve needle seat. The first flow tube 60 is mounted to the valve seat 12.
In a preferred embodiment, the end of the first flow tube 60 in communication with the valve chamber 121 defines a first flow tube internal flow bore 61. Or the orifice at the end of the first flow tube 60 in communication with the valve chamber 121, is designated as the first flow tube internal flow aperture. The corresponding orifice at the other end can be named as a first orifice outside the flow tube. The first flow tube inner and outer flowtube outer orifices comprise orifices at both ends of the first flow tube 60. The upper end of the nut 50 is fixed to the valve seat 12. The lower end of the nut 50 is a threaded lead section 51. The guide screw thread 51 is formed with an internal thread hole penetrating the guide screw thread 51. The upper end of the nut 50 is positioned above the inner flow bore 61 of the first flow tube. The guide thread segment 51 extends from above downwardly beyond the lower side of the first flow tube internal flow bore 61. The fluid of the inner flow hole 61 of the first flow pipe impacts the guiding thread section 51, the acting force is transmitted to the valve seat 12 through the nut 50, the transverse impact force on the valve needle 30 is reduced, the working stability of the electronic expansion valve is enhanced, the service life is prolonged, and the noise reduction effect is achieved to a certain extent.
When the core element is driven by the magnetic ring 21 to rotate, the core element can drive the valve needle 30 to axially move due to a screw-nut transmission mechanism formed by the nut 50 and the screw 23, so that the core element is inserted into the valve hole to close the electronic expansion valve or pulled out of the valve hole to open the electronic expansion valve.
Electronic expansion valve rotor assembly 100 further includes: and the fixing frame 80 is used for mounting the electronic expansion valve rotor assembly 100. The mount 80 is welded to the valve seat 12. Specifically, the mount 80 is welded to the outside of the valve seat 12. The upper end of the nut 50 is welded to the interior of the valve seat 12 and covers the top of the valve chamber 121. Since the fluid of the first flow tube inner flow bore 61 is directly fed into the valve chamber 121, the fluid directly impacts the valve seat 12. The direct welding of the mount 80 to the valve seat 12 helps to improve the shock resistance of the valve seat 12, further enhancing the operational stability of the electronic expansion valve. Compared with the conventional manner in which the holder is directly fixed to the housing, the problem that the valve seat 12 is easily separated from the housing 11 due to fluid impact is solved.
In a preferred embodiment, the distance from the lower end of the first flow tube inner orifice 61 to the lower end of the valve seat 12 is less than or equal to the distance from the upper end of the first flow tube inner orifice 61 to the upper end of the valve seat 12. The height of the rotor assembly 100 of the electronic expansion valve is effectively reduced and the volume is reduced through the structural arrangement of the valve seat 12 and the nut 50 and the installation position of the flow hole 61 in the first flow pipe.
In a preferred embodiment, the top of the valve needle holder 40 is formed with a drainage groove 41. The cross-sectional area of the drainage groove 41 gradually increases from the groove bottom to the groove opening. The groove bottom of the drainage groove 41 forms a valve hole. Specifically, the groove wall surface of the drainage groove 41 is a tapered surface. Through the setting of drainage groove 41 guide fluid gets into drainage groove 41 and passes the valve hole, compare the traditional step structure and further play the effect of making an uproar that falls. As a specific embodiment, the valve bore comprises a beveled bore that conforms to the valve needle 30. The beveled hole cooperates with the beveled structure of the valve needle 30 to enhance sealing performance.
As a preferred embodiment, the valve needle holder 40 includes: a thick section 42 and a thin section 43. The thick section 42 and the thin section 43 constitute a step structure. The thick section 42 is fixed to the valve seat 12 and the stepped surface of the stepped structure formed by the thick section 42 and the thin section 43 is lower than the bottom surface of the valve seat 12. Second flow tube 70 is nested to thin section 44. Compared with the traditional mode that the bottom of the thick section is flush with the bottom of the valve seat, the problem that the second flow pipe 70 is difficult to install in place and then easily falls off from the valve needle seat 40 due to the existence of machining errors is avoided.
In a preferred embodiment, the electronic expansion valve rotor assembly 100 further includes: a support base 90. The support base 90 is installed into the housing 11. The support seat 90 is formed with a through hole 93 communicating the top space of the support seat 90 with the bottom space of the support seat 90. The through hole 93 releases the pressure, so that the internal pressure balance is realized, and the support seat 90 is convenient to mount. The outer wall of the housing 11 is formed with a positioning structure protruding inward for positioning the support seat 90.
As a specific embodiment, the support base 90 is provided with a positioning guide shaft 91 for guiding the spring guide 22. The spring guide 22 is fitted around the outer periphery of the positioning guide shaft 91. The spring guide 22 is slidable along the positioning guide shaft 91 and rotatable about the positioning guide shaft 91. The support seat 90 is provided with a stopper rod 92. Electronic expansion valve rotor assembly 100 further includes: a slip ring 221. The slip ring 221 is slidably mounted to the stopper rod 92. The slide ring 221 is rotatably journalled on the spring rail 22. The slip ring 221, the stopper rod 92 and the spring guide 22 together constitute a stopper mechanism to limit axial displacement.
As a specific embodiment, the electronic expansion valve rotor assembly 100 further includes: a needle spring 222 and a spring support seat 223. The valve needle 30 comprises: a positioning block section 31. The spring guide 22 and the lead screw 23 together form a spring chamber that accommodates the needle spring 222 and the spring support seat 223. The positioning block portion 31 and the spring support seat 223 are slidably disposed in the spring cavity. The needle spring 222 abuts the needle 30 through the spring support seat 223. The needle spring 222 pushes the needle 30 through the spring support seat 223, lifting the sealing effect of the needle 30 as the wick moves downward.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. An electronic expansion valve rotor assembly comprising: the valve comprises a shell assembly, a magnetic ring, a spring guide rail, a screw rod, a valve needle seat, a nut, a first flow pipe and a second flow pipe; the magnetic ring, the spring guide rail and the screw rod are fixed into a whole and defined as a core piece; the core member is rotatably arranged in the shell assembly and can slide along the rotation axis of the core member; the valve needle is mounted to the core member; the valve needle seat is provided with a valve hole for inserting the valve needle; the nut and the valve needle seat are fixed to the shell assembly; the housing assembly includes: a housing and a valve seat; the housing is secured to the valve seat; the valve seat is provided with a valve cavity; the first flow pipe is communicated to the valve cavity; the second flow pipe is communicated to the valve cavity through the valve hole;
the valve is characterized in that a first flow pipe inner flow hole is defined at one end of the first flow pipe, which is communicated with the valve cavity; the upper end of the nut is fixed to the valve seat; the lower end of the nut is a guide thread section; the guide threaded section is provided with an internal threaded hole penetrating through the guide threaded section; the upper end of the nut is positioned above the inner flow hole of the first flow pipe; the guiding thread section extends from top to bottom to exceed the lower part of the inner flow hole of the first flow pipe.
2. The electronic expansion valve rotor assembly of claim 1,
a drainage groove is formed at the top of the valve needle base; the cross-sectional area of the drainage groove is gradually enlarged from the groove bottom to the groove opening; the groove bottom of the drainage groove forms the valve hole.
3. The electronic expansion valve rotor assembly of claim 2,
the valve bore includes a beveled bore that is fitted to the valve needle.
4. The electronic expansion valve rotor assembly of claim 1,
the valve needle seat includes: an upper section, a middle section and a lower section; the upper section and the middle section and the lower section form a step structure; the upper section is positioned in the valve cavity; the lower section is positioned outside the valve cavity; the middle section penetrates through the valve seat, and the step surface of the step structure formed by the middle section and the lower section is lower than the bottom surface of the valve needle seat; the second flow tube is sleeved to the lower section.
5. The electronic expansion valve rotor assembly of claim 1,
the electronic expansion valve rotor assembly further comprises: the fixing frame is used for mounting the electronic expansion valve rotor assembly; the mount is welded to the valve seat.
6. The electronic expansion valve rotor assembly of claim 1,
the electronic expansion valve rotor assembly further comprises: a supporting seat; the supporting seat is installed in the shell; the supporting seat is provided with a through hole which is communicated with the top space of the supporting seat and the bottom space of the supporting seat.
7. The electronic expansion valve rotor assembly of claim 6,
the supporting seat is provided with a positioning guide shaft for guiding the spring guide rail; the spring guide rail is sleeved on the periphery of the positioning guide shaft.
8. The electronic expansion valve rotor assembly of claim 7,
the supporting seat is provided with a stop rod; the electronic expansion valve rotor assembly further comprises: a slip ring; the slip ring is slidably mounted to the stop rod; the slip ring can be sleeved on the spring guide rail in a rotating rod mode.
9. The electronic expansion valve rotor assembly of claim 1,
the electronic expansion valve rotor assembly further comprises: a valve needle spring and a spring support seat; the valve needle comprises: a positioning block part; the spring guide rail and the screw rod jointly form a spring cavity for accommodating the valve needle spring and the spring support seat; the positioning block part and the spring supporting seat are slidably arranged in the spring cavity; the valve needle spring is abutted to the valve needle through the spring supporting seat.
10. The electronic expansion valve rotor assembly of claim 6,
and a positioning structure for positioning the supporting seat is formed by the inward protrusion of the outer wall of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122264150.1U CN218718803U (en) | 2021-09-17 | 2021-09-17 | Electronic expansion valve rotor assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122264150.1U CN218718803U (en) | 2021-09-17 | 2021-09-17 | Electronic expansion valve rotor assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218718803U true CN218718803U (en) | 2023-03-24 |
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ID=85582207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122264150.1U Active CN218718803U (en) | 2021-09-17 | 2021-09-17 | Electronic expansion valve rotor assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218718803U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847436A (en) * | 2021-09-17 | 2021-12-28 | 浙江恒森实业集团有限公司 | Electronic expansion valve rotor assembly |
-
2021
- 2021-09-17 CN CN202122264150.1U patent/CN218718803U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847436A (en) * | 2021-09-17 | 2021-12-28 | 浙江恒森实业集团有限公司 | Electronic expansion valve rotor assembly |
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