CN104567138B - Electronic expansion valve - Google Patents
Electronic expansion valve Download PDFInfo
- Publication number
- CN104567138B CN104567138B CN201310518177.6A CN201310518177A CN104567138B CN 104567138 B CN104567138 B CN 104567138B CN 201310518177 A CN201310518177 A CN 201310518177A CN 104567138 B CN104567138 B CN 104567138B
- Authority
- CN
- China
- Prior art keywords
- chamber
- liquid
- expansion valve
- electric expansion
- coil
- 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.)
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- 239000007788 liquid Substances 0.000 claims abstract description 67
- 230000004888 barrier function Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000002826 coolant Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Details Of Valves (AREA)
Abstract
The invention provides an electronic expansion valve. The electronic expansion valve comprises a valve body, a coil, a second chamber, a valve core and a first liquid channel hole, wherein the first chamber is formed in the valve body; a liquid inlet and a liquid outlet are oppositely formed in the two ends of the valve body and are coaxially arranged along the central axis of the valve body; the coil is arranged on the outer side of the chamber wall of the first chamber in a sleeving way; the second chamber is formed in the first chamber; the inlet end of the second chamber is communicated with the liquid inlet; the outlet end of the second chamber is communicated with the liquid outlet; the inlet end of the second chamber and the outlet end of the second chamber are formed coaxially; the valve core capable of moving along the center axis is arranged in the second chamber; the first liquid channel hole is formed in the chamber wall of the second chamber; the first chamber is communicated with the liquid inlet through the first liquid channel hole. According to the electronic expansion valve, the flowing direction of liquid in the valve body and a direction along which the liquid flows in/out of the valve body are kept in the same straight line, so that the liquid flowing resistance and water head losing can be effectively reduced; meanwhile, the problem of noise can be solved, installation is easy, the cost is saved, and the energy efficiency is increased.
Description
Technical field
The present invention relates to field of flow control, especially, it is related to a kind of electric expansion valve.
Background technology
Electric expansion valve as restricting element because its response speed is fast, accurately, high precision the advantages of freeze system in air-conditioner
Application in system is increasingly extensive.In existing electronic expansion valve structure, coolant flows into pipe and effuser is in 90 °, therefore typically can only install
In air-conditioner outdoor unit unit or indoor unit.For multiple on-line system, electric expansion valve is arranged on refrigeration system mostly
Indoor set internal or external in the special installation box not far from interior machine, there is problems with：Electric expansion valve is built into room
When in interior machine, noise is big, takes up space big, efficiency of assembling is low.When in the external mounting box to outside indoor set of electric expansion valve, shadow
Ring attractive in appearance, installation and maintenance high cost.Generally 90 ° of existing electric expansion valve refrigerant exit and Way in, flow resistance and along journey pressure
Power loss is big.
Content of the invention
Present invention aim at providing a kind of electric expansion valve, lost along stroke pressure with solving existing electric expansion valve liquid
Larger technical problem.
For achieving the above object, the invention provides a kind of electric expansion valve, form the first chamber including in valve body, valve body
Room, the two ends of valve body are relatively set with liquid inlet and liquid outlet, and liquid inlet and liquid outlet are along the central axis of valve body
It is coaxially disposed；Coil, is set in outside the cavity wall of first chamber；Second chamber, is arranged in first chamber, the entering of second chamber
Mouth end is connected with liquid inlet, and the port of export of second chamber is connected with liquid outlet, the entrance point of second chamber and second
The port of export of chamber is coaxially disposed；It is provided with valve element moveable along central axis in second chamber；First liquid access opening, if
Put in the cavity wall of second chamber, first chamber is connected with liquid inlet by first liquid access opening.
Further, valve element is provided with the second liquid access opening extending parallel to central axis.
Further, also include stator and the rotor relatively rotating, stator is arranged on outside second chamber, valve element and rotor phase
Connect to rotate with rotor relative stator.
Further, rotor is PM rotor.
Further, stator is engaged with rotor threads.
Further, coil is open coil.
Further, coil is provided with insulating barrier.
Further, also include end casing, valve element is connected by end casing with rotor.
Further, controller, the electrical current size of controller control coil and time are also included.
Further, it is provided with filter in liquid inlet and liquid outlet.
The invention has the advantages that：
By by liquid, in valve body, moving direction with the holding of liquid inlet-outlet valve body direction point-blank, can be effective
Reduce liquid flowing resistance and along stroke pressure loss, can solve the problem that noise problem simultaneously, install simple, cost-effective, improve energy
Effect.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is further detailed explanation.
Brief description
The accompanying drawing constituting the part of the application is used for providing a further understanding of the present invention, the schematic reality of the present invention
Apply example and its illustrate, for explaining the present invention, not constituting inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is that when not worked according to the embodiment of embodiments of the invention electric expansion valve, needle is in normally off signal
Figure；
Fig. 2 is the cross-sectional schematic of the embodiment valve element of the electric expansion valve according to the present invention；
Fig. 3 is the schematic diagram of the embodiment coil of the electric expansion valve according to the present invention；And
Fig. 4 is that the embodiment liquid of the electric expansion valve according to the present invention flows to schematic diagram.
Reference in accompanying drawing is as follows：10th, valve body；11st, liquid inlet；12nd, liquid outlet；20th, coil；21st, stator；
22nd, rotor；23rd, end casing；24th, pin interfaces；25th, insulating barrier；26th, fixed structure；31st, valve element；311st, second liquid passage
Hole；32nd, first liquid access opening.
Specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the present invention can be defined by the claims
Implement with the multitude of different ways covering.
Referring to Fig. 1 to Fig. 4, according to the electric expansion valve of the present invention, including valve body 10, in valve body 10, form first chamber,
The two ends of valve body 10 are relatively set with liquid inlet 11 and liquid outlet 12, and liquid inlet 11 and liquid outlet 12 are along valve body 10
Central axis coaxial is arranged；Coil 20, is set in outside the cavity wall of first chamber；Second chamber, is arranged in first chamber, the
The entrance point of two chambers is connected with liquid inlet 11, and the port of export of second chamber is connected with liquid outlet 12, second chamber
Entrance point and the port of export of second chamber be coaxially disposed；It is provided with second chamber along the moveable valve element of central axis 31；
First liquid access opening 32, is arranged in the cavity wall of second chamber, and first chamber is entered by first liquid access opening 32 and liquid
Mouth 11 is connected.
A kind of straight-through electronic expansion valve of electric expansion valve of the present invention.Straight-through structure can be directly installed on air-conditioning system
In cooling system indoor and outdoor machine connecting tube；Valve element 31 moving direction and coolant import and export flow direction on the same line；Flowing is more steady,
Evenly, including unidirectional and two-way flow mode.The structure being connected with copper pipe is had on its inlet tube and outlet as " loudspeaker expand
Mouth ", pipe nut, pipe joint, also include directly realizing being welded to connect with copper pipe.As another in arranged pipe joint in electric expansion valve one end
Outer one end setting " loudspeaker enlarging " structure etc..It may be mounted in air conditioning chamber's connection pipe for internal-external unit.By by liquid in valve body
Interior moving direction and liquid inlet-outlet valve body direction keep point-blank, can effectively reducing liquid flowing resistance and along journey pressure
Power is lost, and can solve the problem that noise problem simultaneously, installs simple, cost-effective, improves efficiency.
Referring to Fig. 1 to Fig. 4, valve element 31 is provided with the second liquid access opening 311 extending parallel to central axis.Valve element
31 principal characters：Second liquid access opening 311, valve element 31 cavity.Second liquid access opening 311 on valve element 31 conical surface connects cold
Matchmaker's inlet tube and valve element 31 cavity.Advantage, when valve element 31 is in and opens, coolant can pass through second liquid access opening to one
311 enter inside valve element 31, and rapid equalisation valve element 31 pressure at two ends reduces valve element 31 moving resistance and coolant rushing to valve element 31
Hit so that valve element 31 move more steady.It two can be as coolant circulation passage, because it flows for linear type, energy loss
Minimum, noise is lower.Second liquid access opening 311 is preferentially arranged symmetrically, quantity 2 to 4.
Referring to Fig. 1, electric expansion valve also includes controller, the electrical current size of controller control coil 20 and time.
Electric expansion valve also includes the stator 21 relatively rotating and rotor 22, and stator 21 is arranged on the outer of second chamber, valve element 31 with turn
Son 22 is connected and rotates with rotor 22 relative stator 21.Rotor 22 is PM rotor.Stator 21 is engaged with rotor 22 screw thread.
Electric expansion valve also includes end casing 23, and valve element 31 is connected by end casing 23 with rotor 22.Fig. 1 is electric expansion valve not work
When making, valve element 31 is in normally closed state diagram, and valve element 31 type of drive adopts electrodynamic type to drive.Its work process：Electric expansion valve
When not working, coil 20 power-off, valve element 31 is closed under screw thread self-locking effect.When system needs electric expansion valve to enter
During row Flow-rate adjustment, coil 20 is energized, and the pulse voltage of control circuit is applied on coil 20 according to certain logical relation, forever
The rotor 22 that Magnet is made long is subject to electromagnetic torque effect to produce rotary motion forward or backwards, by the transmission of screw thread, makes valve element
31 advance or retreat, and change the aperture of valve port, thus adjusting the flow of liquid.
Referring to Fig. 3, coil of electronic expansion valve can be open and closed.Preferably, coil 20 is open coil.
Coil 20 is provided with insulating barrier.Open coil includes pin interfaces 24, insulating barrier 25, fixed structure 26.Open architecture can
Simple and convenient with more emat coil during using in electric expansion valve.Insulating barrier preferred rubber or plastics.When needs more emat coil
When, the elastic deformation using rubber or plastics opens coil, is sleeved on electronic expansion valve shell, is then aligned with coil and connects
Mouthful, lock coil using fixed structure 26.
Referring to Fig. 1 and Fig. 4, in liquid inlet 11 and liquid outlet 12, it is provided with filter.Specifically, its inlet tube and
There is filter for installation on outlet, realize coolant and filter, defecator can also be arranged on the pipeline being connected with electric expansion valve
In.
Referring to Fig. 1 and Fig. 4, wherein threaded stator 21 is fixed on valve body 10.Valve element 31 passes through end casing 23 with forever
Magnet rotor 22 assembly is fixed together.PM rotor 22 assembly and threaded stator 21 realize valve by screw thread transmission
The movement of core 31.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect：
By by liquid, in valve body, moving direction with the holding of liquid inlet-outlet valve body direction point-blank, can be effective
Reduce liquid flowing resistance and along stroke pressure loss, can solve the problem that noise problem simultaneously, install simple, cost-effective, improve energy
Effect.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of electric expansion valve is it is characterised in that include：
Valve body（10）, described valve body（10）Interior formation first chamber, described valve body（10）Two ends be relatively set with liquid inlet
（11）And liquid outlet（12）, described liquid inlet（11）With described liquid outlet（12）Along described valve body（10）Central axis
It is coaxially disposed；
Coil（20）, it is set in outside the cavity wall of described first chamber；
Second chamber, is arranged in described first chamber, the entrance point of described second chamber and described liquid inlet（11）It is connected
Logical, the port of export of described second chamber and described liquid outlet（12）It is connected, the entrance point of described second chamber and described
The port of export of two chambers is coaxially disposed；
It is provided with valve element moveable along described central axis in described second chamber（31）；
First liquid access opening（32）, it is arranged in the cavity wall of described second chamber, described first chamber passes through described first liquid
Body access opening（32）With described liquid inlet（11）It is connected.
2. electric expansion valve according to claim 1 is it is characterised in that described valve element（31）On be provided with parallel to described
The second liquid access opening that central axis extends（311）.
3. electric expansion valve according to claim 1 and 2 is it is characterised in that also include the stator relatively rotating（21）With
Rotor（22）, described stator（21）It is arranged on outside described second chamber, described valve element（31）With described rotor（22）Be connected with
With described rotor（22）Relatively described stator（21）Rotate.
4. electric expansion valve according to claim 3 is it is characterised in that described rotor（22）For PM rotor.
5. electric expansion valve according to claim 3 is it is characterised in that described stator（21）With described rotor（22）Screw thread
Engagement.
6. electric expansion valve according to claim 1 is it is characterised in that described coil（20）For open coil.
7. electric expansion valve according to claim 6 is it is characterised in that described coil（20）It is provided with insulating barrier（25）.
8. electric expansion valve according to claim 3 is it is characterised in that also include end casing（23）, described valve element（31）
With described rotor（22）By end casing（23）It is connected.
9. it is characterised in that also including controller, described controller controls institute to electric expansion valve according to claim 1
State coil（20）Electrical current size and the time.
10. electric expansion valve according to claim 1 is it is characterised in that described liquid inlet（11）With described liquid discharge
Mouthful（12）Inside it is provided with filter.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310518177.6A CN104567138B (en) | 2013-10-28 | 2013-10-28 | Electronic expansion valve |
| PL14857173T PL3064811T3 (en) | 2013-10-28 | 2014-10-17 | Electronic expansion valve |
| JP2016527318A JP6212213B2 (en) | 2013-10-28 | 2014-10-17 | Electronic expansion valve |
| ES14857173.0T ES2694139T3 (en) | 2013-10-28 | 2014-10-17 | Electronic expansion valve |
| US15/032,545 US10119735B2 (en) | 2013-10-28 | 2014-10-17 | Electronic expansion valve |
| EP14857173.0A EP3064811B1 (en) | 2013-10-28 | 2014-10-17 | Electronic expansion valve |
| PCT/CN2014/088861 WO2015062422A1 (en) | 2013-10-28 | 2014-10-17 | Electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310518177.6A CN104567138B (en) | 2013-10-28 | 2013-10-28 | Electronic expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104567138A CN104567138A (en) | 2015-04-29 |
| CN104567138B true CN104567138B (en) | 2017-02-08 |
Family
ID=53083786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310518177.6A Active CN104567138B (en) | 2013-10-28 | 2013-10-28 | Electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104567138B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3839308A1 (en) * | 2019-12-20 | 2021-06-23 | Siemens Schweiz AG | Expansion valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1566728A (en) * | 2003-06-20 | 2005-01-19 | 浙江三花股份有限公司 | Electronic expansion valve with double throttling function |
| JP2005207574A (en) * | 2003-12-26 | 2005-08-04 | Saginomiya Seisakusho Inc | Refrigerant flow control valve and air-conditioner |
| WO2011114992A1 (en) * | 2010-03-18 | 2011-09-22 | 富士電機株式会社 | Electronic expansion valve |
| CN103185426A (en) * | 2012-12-18 | 2013-07-03 | 雷宜东 | Three-way electronic expansion valve |
| CN203516797U (en) * | 2013-10-28 | 2014-04-02 | 珠海格力电器股份有限公司 | Electronic expansion valve |
-
2013
- 2013-10-28 CN CN201310518177.6A patent/CN104567138B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1566728A (en) * | 2003-06-20 | 2005-01-19 | 浙江三花股份有限公司 | Electronic expansion valve with double throttling function |
| JP2005207574A (en) * | 2003-12-26 | 2005-08-04 | Saginomiya Seisakusho Inc | Refrigerant flow control valve and air-conditioner |
| WO2011114992A1 (en) * | 2010-03-18 | 2011-09-22 | 富士電機株式会社 | Electronic expansion valve |
| CN103185426A (en) * | 2012-12-18 | 2013-07-03 | 雷宜东 | Three-way electronic expansion valve |
| CN203516797U (en) * | 2013-10-28 | 2014-04-02 | 珠海格力电器股份有限公司 | Electronic expansion valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104567138A (en) | 2015-04-29 |
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| C14 | Grant of patent or utility model | ||
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