CN107166052A - A kind of electric expansion valve - Google Patents
A kind of electric expansion valve Download PDFInfo
- Publication number
- CN107166052A CN107166052A CN201710447208.1A CN201710447208A CN107166052A CN 107166052 A CN107166052 A CN 107166052A CN 201710447208 A CN201710447208 A CN 201710447208A CN 107166052 A CN107166052 A CN 107166052A
- Authority
- CN
- China
- Prior art keywords
- needle
- hole
- spiro union
- valve seat
- electric expansion
- 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
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
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- 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
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating 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
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
- F16K31/502—Mechanical actuating means with screw-spindle or internally threaded actuating means actuating pivotable valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
Abstract
The present invention relates to a kind of electric expansion valve, including shell, valve seat, needle, drive mechanism, executing agency.The beneficial effects of the invention are as follows：The needle that spiro union portion is combined with choking portion is designed with, and the through hole of up/down perforation is opened up on the spiro union portion of needle, needle fluid section of entrance in unlatching is first passed through through hole and reaches outlet, so as to reduce the pressure differential between entrance and outlet, it is to avoid needle is deformed；Arc groove is engaged with arc convex not only has plugging action to the lower mouth of through hole, while having positioning action to needle.
Description
Technical field
The present invention relates to electric expansion valve field, more particularly to a kind of electric expansion valve.
Background technology
Electric expansion valve is the important composition part in such as air-conditioning system and refrigeration system.Electric expansion valve is mainly used in
The flow of working fluid (such as refrigerant) is adjusted.Electric expansion valve can be controlled using stepper motor, and
Generally by drive mechanism (stepper motor), executing agency's (thread transmission), throttle mechanism (needle valve seat) and correlation
Auxiliary body is constituted.
The needle of electric expansion valve, because the pressure differential of entrance and outlet is oppressed and is deformed, influences electronic expansion when opening
The normal of valve is used.
The content of the invention
It is an object of the invention to overcome the problem above that prior art is present there is provided a kind of electric expansion valve, valve is reduced
The pressure differential that pin is subject to when opening, it is to avoid needle is deformed.
To realize above-mentioned technical purpose and the technique effect, the present invention is achieved through the following technical solutions：
Electric expansion valve, including shell, valve seat, needle, drive mechanism, executing agency, the drive mechanism are arranged in shell,
The executing agency is arranged in valve seat, and the disassembling shell is arranged on valve seat, and the needle is connected with executing agency, institute
Choking portion of the needle including discoidal spiro union portion and reverse frustoconic is stated, the block part is in the bottom center of spiro union portion, institute
The top end diameter for stating choking portion is less than the through hole that up/down perforation is offered on the bottom diameter of spiro union portion, the spiro union portion, described
The bottom of spiro union portion is provided with the arc groove being connected with the lower mouth of through hole；The valve seat include having female screwed pipe portion,
Outlet positioned at screwed pipe subordinate end, the entrance positioned at screwed pipe portion side, the outlet are the truncated cone-shaped hole being adapted with choking portion,
The junction at the outlet and screwed pipe subordinate end has the platform of an annular, and the platform is provided with and is mutually engaged with arc groove
Arc convex, gasket seal is installed on the platform.
Further, the drive mechanism includes stepper motor and the driving being connected on the power output shaft of stepper motor
Gear, the executing agency includes driven gear, screw rod, two sealed bearings, and the driven gear center has screwed hole, institute
State screw rod to be screwed with screwed hole, the outer rings of two sealed bearings is fixedly mounted on valve seat top, the driven gear it is upper
End and inner ring of the lower end respectively with two sealed bearings are affixed, and the driven gear is meshed with drive gear.
Further, the through hole has two and symmetrical, accordingly：Arc groove and arc convex respectively have two.
The beneficial effects of the invention are as follows：The needle that spiro union portion is combined with choking portion is designed with, and is opened on the spiro union portion of needle
If the through hole of up/down perforation, needle fluid section of entrance in unlatching is first passed through through hole and reach outlet, so as to reduce entrance
Pressure differential between outlet, it is to avoid needle is deformed；Arc groove is engaged with arc convex not only has envelope to the lower mouth of through hole
Stifled effect, while there is positioning action to needle.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the upward view of needle in the present invention；
Fig. 3 is the top view of the exit portion of valve seat in the present invention.
Label declaration in figure：1- valve seats, 101- entrances, 102- outlets, 103- arc convex, 2- shells, 3- stepper motors,
4- drive gears, 5- driven gears, 6- screw rods, 7- sealed bearings, 8- needles, 81- spiro union portions, 82- choking portions, 801- through holes,
802- arc grooves, 9- gasket seals.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the present invention is described in detail.
As shown in Figures 1 to 3, electric expansion valve, including shell 2, valve seat 1, needle 8, drive mechanism, executing agency, driving
Mechanism is arranged in shell 2, and executing agency is arranged in valve seat 1, and shell 2 is removed and installed on valve seat 1, and needle 8 is with performing machine
Structure is connected, and needle 8 includes the choking portion 82 of discoidal spiro union portion 81 and reverse frustoconic, and choking portion 82 is located at spiro union portion 81
Bottom center, the top end diameter of choking portion 82, which is less than on the bottom diameter of spiro union portion 81, spiro union portion 81, offers up/down perforation
Through hole 801, the bottom of spiro union portion 81 is provided with the arc groove 802 being connected with the lower mouth of through hole 801；Valve seat 1 is included with interior
The screwed pipe portion of screw thread, the outlet 102 positioned at screwed pipe subordinate end, the entrance 101 positioned at screwed pipe portion side, outlet 102 is and blocking
The junction at the truncated cone-shaped hole that portion 82 is adapted, outlet 102 and screwed pipe subordinate end has the platform of an annular, and platform is provided with
Gasket seal 9 is installed on the arc convex 103 being mutually engaged with arc groove 802, platform.
Drive mechanism includes stepper motor 3 and the drive gear 4 being connected on the power output shaft of stepper motor 3, performs
Mechanism includes driven gear 5, screw rod 6, two sealed bearings 7, and the center of driven gear 5 has screwed hole, screw rod 6 and screwed hole phase
Screw togather, the outer rings of two sealed bearings 7 is fixedly mounted on the top of valve seat 1, the top and bottom of driven gear 5 respectively with two
The inner ring of sealed bearings 7 is affixed, and driven gear 5 is meshed with drive gear 4.
Through hole 801 has two and symmetrical, accordingly：Arc groove 802 and arc convex 103 respectively have two.
The needle 8 that spiro union portion 81 is combined with choking portion 82 is designed with, and up/down perforation is opened up on the spiro union portion 81 of needle 8
Through hole 801, makes the fluid section of entrance 101 in unlatching of needle 8 first pass through through hole 801 and reaches outlet 102, so as to reduce entrance
Pressure differential between 101 and outlet 102, it is to avoid needle 8 is deformed；Arc groove 802 is engaged not only to through hole with arc convex 103
801 lower mouth has plugging action, while having positioning action to needle 8.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.
Claims (3)
1. a kind of electric expansion valve, including shell, valve seat, needle, drive mechanism, executing agency, the drive mechanism are arranged on
In shell, the executing agency is arranged in valve seat, and the disassembling shell is arranged on valve seat, the needle and executing agency's phase
Connection, it is characterised in that：
The needle includes the choking portion of discoidal spiro union portion and reverse frustoconic, and the block part is in the bottom of spiro union portion
The heart, the top end diameter of the choking portion is less than the through hole that up/down perforation is offered on the bottom diameter of spiro union portion, the spiro union portion,
The bottom of the spiro union portion is provided with the arc groove being connected with the lower mouth of through hole；
The valve seat includes having female screwed pipe portion, the outlet positioned at screwed pipe subordinate end, the entrance positioned at screwed pipe portion side,
The outlet is the truncated cone-shaped hole being adapted with choking portion, and the junction of the outlet and screwed pipe subordinate end has an annular
Platform, the platform is provided with the arc convex being mutually engaged with arc groove, the platform and is provided with gasket seal.
2. electric expansion valve according to claim 1, it is characterised in that：The drive mechanism includes stepper motor and bonded
Drive gear on the power output shaft of stepper motor, the executing agency includes driven gear, screw rod, two seal shafts
Hold, the driven gear center has screwed hole, the screw rod is screwed with screwed hole, the outer ring of two sealed bearings is fixed
Installed in valve seat top, the inner ring of the top and bottom of the driven gear respectively with two sealed bearings is affixed, described driven
Gear is meshed with drive gear.
3. electric expansion valve according to claim 1, it is characterised in that：The through hole has two and symmetrical, accordingly
's：Arc groove and arc convex respectively have two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710447208.1A CN107166052A (en) | 2017-06-14 | 2017-06-14 | A kind of electric expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710447208.1A CN107166052A (en) | 2017-06-14 | 2017-06-14 | A kind of electric expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107166052A true CN107166052A (en) | 2017-09-15 |
Family
ID=59818684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710447208.1A Pending CN107166052A (en) | 2017-06-14 | 2017-06-14 | A kind of electric expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107166052A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020135162A1 (en) * | 2018-12-25 | 2020-07-02 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve and air conditioning system using same |
-
2017
- 2017-06-14 CN CN201710447208.1A patent/CN107166052A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020135162A1 (en) * | 2018-12-25 | 2020-07-02 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve and air conditioning system using same |
| US11796234B2 (en) | 2018-12-25 | 2023-10-24 | Zhejiang Dunan Artificial Environment Co., Ltd. | Electronic expansion valve and air conditioning system with electronic expansion valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170915 |
|
| WD01 | Invention patent application deemed withdrawn after publication |