CN102384611A - Expansion valve - Google Patents

Expansion valve Download PDF

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Publication number
CN102384611A
CN102384611A CN2011102040349A CN201110204034A CN102384611A CN 102384611 A CN102384611 A CN 102384611A CN 2011102040349 A CN2011102040349 A CN 2011102040349A CN 201110204034 A CN201110204034 A CN 201110204034A CN 102384611 A CN102384611 A CN 102384611A
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CN
China
Prior art keywords
valve
outlet
expansion valve
path
throttle part
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.)
Granted
Application number
CN2011102040349A
Other languages
Chinese (zh)
Other versions
CN102384611B (en
Inventor
井上靖
林宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujikoki Corp
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Fujikoki Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujikoki Corp filed Critical Fujikoki Corp
Publication of CN102384611A publication Critical patent/CN102384611A/en
Application granted granted Critical
Publication of CN102384611B publication Critical patent/CN102384611B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F25B41/33—Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant
    • 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
    • F25B41/33—Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant
    • F25B41/335—Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant via diaphragms
    • 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
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/12—Sound
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2513—Expansion valves

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Temperature-Responsive Valves (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Details Of Valves (AREA)

Abstract

The invention relates to an expansion valve which reduces the pressure on refrigeration-cycle refrigerant and controls the refrigerant flow, with the noise of the expansion valve being reduced. A valve body (30) of the expansion valve is provided with an inlet (321) and an outlet (331) for high-pressure refrigerant. A valve component (32b) is arranged in a valve chamber (25) to control the opening degree of a valve hole (32a). At the outlet, a throttling component (100) is fixed via a riveting part (334) and rectifies the refrigerant flowing out from the evaporator side, thereby reducing the noise which is caused as bubbles are broken.

Description

Expansion valve
Technical field
The present invention relates to a kind of temperature-sensitive mechanism internally-arranged type expansion valve that is used for kind of refrigeration cycle.
Background technology
In the past, in being equipped on the employed kind of refrigeration cycle such as aircondition of automobile, space and pipe arrangement were set, used temperature-sensitive mechanism internally-arranged type temperature expansion valve according to the amount of passing through of temperature adjustment cold-producing medium in order to save.
Figure 11 is the sectional view of an example of the existing temperature-sensitive of expression mechanism internally-arranged type expansion valve; In the valve body with prism shape 30, be formed with discretely up and down mutually: as condensation in condenser 5, and through first path 32 of the path of the high pressure liquid refrigerant behind the receptacle 6; And the alternate path that gaseous refrigerant circulated 34 that supplies to the refrigerant inlet of compressor 4 from the refrigerant outlet of evaporimeter 8.In addition, 11 is pipe arrangement.
Entry 32 is provided with: import the inlet port 321 of liquid refrigerant, the valve chamber 35 that is communicated with this inlet port 321, the valve opening 32a that is arranged at this valve chamber 35; Will be at the outlet 331 of the cold-producing medium after expanding in this valve opening 32a place to the outside derivation.The porch of valve opening 32a is formed with valve seat, relatively disposes valve member 32b with this valve seat, and valve member 32d passes through compression helical spring 32c quilt towards the valve seat application of force.The lower end of valve chamber 35 is opening in the bottom surface of valve body 30, seals through the stopper 37 that is screwed together in valve body 30.
The upper end of valve body 30 is equipped with the valve member drive unit 36 that is used for driver's valve parts 32b.Valve member drive unit 36 has pressure action housing 36d, and the inner space of this pressure action housing 36d is separated into up and down two pressure operating chamber 36b, 36c by barrier film 36a.Pressure action housing 36d is communicated with alternate path 34 through the balancing orifice 36e that the center line with respect to valve opening 32a forms with one heart.
Dispose the valve member drive rod 36f that extends to valve opening 32a from the lower surface of barrier film 36a in the valve body 30.Valve member drive rod 36f is guided at above-below direction by set slide-and-guide hole on the spaced walls between first path 32 of valve body 30 and the alternate path 34 sliding freely, the lower end of this valve member drive rod 36f and valve member 32b butt.In addition, seal member 36g is installed on the above-mentioned spaced walls, sealing parts 36g is used to prevent that cold-producing medium from revealing between first path 32 and alternate path 34.
Be filled with known barrier film drive fluid among the pressure operating chamber 36b above pressure action housing 36d, the heat of the gaseous refrigerant that in alternate path 34, flows passes to above-mentioned barrier film drive fluid through valve member drive rod 36f and the barrier film 36a that is positioned at alternate path 34 and balancing orifice 36e.Barrier film drive fluid among the pressure operating chamber 36b of top gasifies corresponding to the heat of above-mentioned transmission, and its gas pressure is in the upper surface of barrier film 36a.Barrier film 36a is according to the difference displacement up and down of the pressure of the barrier film drive fluid on the surface that is applied to it and the pressure that the barrier film lower surface is loaded.The displacement up and down of the central part of barrier film 36a is delivered to valve member 32b through support unit 36h and valve member drive rod 36f, make valve member 32b with respect to the valve seat of valve opening 32a near or leave.Consequently, the refrigerant flow that flows to evaporimeter 8 is controlled.This expansion valve is open in following patent documentation 1 for example.
Patent documentation 1: TOHKEMY 2004-138292 communique
For this expansion valve; When compressor 4 starts; Make refrigerant gas attracted to compressor 4 from the alternate path 34 interior refrigerant gas that evaporimeter 8 turns back to compressor 4 sides; And the rapid decline of pressure appears, and it is big that the pressure differential between the pressure operating chamber 36b of alternate path 34 and valve member drive unit 36 becomes, and valve member 32b makes valve opening 32a standard-sized sheet rapidly.Thus, in the high-pressure refrigerant that imports to valve chamber 35 through first path 32, produce a lot of bubbles, this bubble breaks and can cause producing harsh noise.
Summary of the invention
The object of the present invention is to provide a kind of expansion valve of eliminating above-mentioned unfavorable condition.
In order to achieve the above object; First expansion valve of the present invention has: valve body, this valve body have the inlet port of importing condensed high-pressure refrigerant in condenser, the valve chamber that is communicated with this inlet port, the valve opening that is arranged at this valve chamber, the outlet that will derive to the outside at the cold-producing medium after expanding in this valve opening place and turn back to from evaporimeter compressor cold-producing medium the path of process; Valve member, this valve member opens and closes said valve opening; And valve member drive unit; This valve member drive unit drives said valve member, thereby controls said valve opening aperture, wherein; Be provided with the throttle part that is fixed in said outlet through caulking part, said caulking part forms through said valve body is carried out plastic working.
In addition, said caulking part through to be arranged at said outlet in the band step reducing diameter part of portion carry out plastic working and form.
In addition, said throttle part can for central portion have a through hole plate-shaped member, or have the plate-shaped member of a plurality of path through holes.
In addition; Second expansion valve of the present invention has: valve body, this valve body have the inlet port of importing condensed high-pressure refrigerant in condenser, the valve chamber that is communicated with this inlet port, the valve opening that is arranged at this valve chamber, the outlet that will derive to the outside at the cold-producing medium after expanding in this valve opening place and turn back to from evaporimeter compressor cold-producing medium the path of process; Valve member, this valve member opens and closes said valve opening; And the valve member drive unit, this valve member drive unit drives said valve member, thereby controls said valve opening aperture, wherein, is provided with the throttle part of fixing through being pressed at said outlet.
In this case, said throttle part can be for having the flange part that is pressed into said outlet and be formed at the plate-shaped member of a through hole of central portion, perhaps have the flange part that is pressed into said outlet and the plate-shaped member of a plurality of path through holes.
Expansion valve of the present invention is because be provided with throttle part at outlet, so the bubble in the cold-producing medium of the high pressure of process can be reduced the noise that produces because of collapse of bubbles by refinement in valve body.
Description of drawings
Fig. 1 is the front view and the sectional view of embodiments of the invention.
Fig. 2 is the key diagram of formation method of the caulking part of Fig. 1.
Fig. 3 is the front view and the sectional view of the throttle part of Fig. 1.
Fig. 4 is front view and the sectional view of another embodiment of the present invention.
Fig. 5 is the key diagram of formation method of the caulking part of Fig. 4.
Fig. 6 is the front view and the sectional view of the throttle part of Fig. 4.
Fig. 7 is the front view and the sectional view of another embodiment of the present invention.
Fig. 8 is the front view and the sectional view of the throttle part of Fig. 7.
Fig. 9 is front view and the sectional view of another embodiment of the present invention.
Figure 10 is the front view and the sectional view of the throttle part of Fig. 9.
Figure 11 is the sectional view of prior art.
The reference numeral explanation;
1... expansion valve; 30... valve body; 32a... valve opening; 32b... valve member; 321... inlet port; 331... outlet; 334... caulking part; 34... path; 35... valve chamber; 36... valve member drive unit; 100... throttle part; 110... through hole; 150... throttle part; 160... path through hole; 200... throttle part; 210... through hole; 250... throttle part; 260... path through hole.
The specific embodiment
As shown in Figure 1, in the valve body 30 of integral body, be provided with a pair of through hole 50 that the path with cold-producing medium extends abreast with 1 expansion valve of the present invention represented, this through hole 50 is used for expansion valve is installed on the other machines.In other structures,, and omit explanation once more to the identical identical symbol of having explained with the front of parts mark of existing product.
In the embodiment shown in fig. 1, the discoid throttle part 100 with a through hole 110 is fixing through caulking part 334, and this caulking part 334 carries out plastic working through the band step reducing diameter part 332 to 331 li portions of outlet and forms.
Fig. 2 representes the details of the fixing means of throttle part, and (a) among the figure be for illustrating the key diagram of the state before the plastic working, and (b) among the figure, (c) are the key diagram that the state after the plastic working is shown.
In Fig. 2 (a), discoid throttle part 100 is inlaid on the band step reducing diameter part 332 of 331 li portions of outlet.Then, band step reducing diameter part 332 is implemented plastic working and formed caulking part 334.Since valve body 30 adopt with processabilities such as aluminum alloy materials preferably material process, so the also more or less freely realization of above-mentioned plastic working.
This caulking part 334 is called as the so-called caulking part (ピ one Le カ シ メ) of peeling off, through to the wall of ring-type make progress in week devices spaced apart partly plastic working form.Among the embodiment in the drawings, on circumference, be formed with caulking part 334 everywhere, throttle part 100 be fixed on reliably outlet 331 in portion.
Fig. 3 is the key diagram that the details of throttle part 100 is shown.
Throttle part 100 has the disc-shaped part of the bigger through hole 110 of diameter for central portion, makes with the sheet material that for example is made up of aluminum alloy materials.
The size of throttle part 100 does not have particular restriction, but can judge: as shown in Figure 2, and when the internal diameter of the path 33 that diameter is d, just post-decompression cold-producing medium is passed through at valve opening 32a place of through hole 110 is D, if with aperture opening ratio=d 2/ D 2* 100 are set at about 21.4～79.0%, then see from the angle of reduce pressure loss and noise to obtain result preferably.
The peripheral part 102 of throttle part 100 form tabular surface so that reliably with caulking part 334 butts, still, also can form the conical surfaces towards the through hole of central authorities 110.
Fig. 4 to Fig. 6 is the key diagram of expression another embodiment of the present invention.
In the present embodiment, the throttle part 150 that is installed on outlet 331 has the structure that on discoid body, is formed with a plurality of path through holes 160.
These throttle part 150 usefulness are for example made by the sheet material that aluminum alloy materials constitutes, through caulking part 334 be fixed on outlet 331 in portion, this is same as the previously described embodiments.Because this throttle part 150 has a plurality of path through holes 160, so from the bubble quilt expeditiously refinement of expansion valve to the cold-producing medium that evaporimeter flows, the effect of noise-decreasing also improves.
The diameter and the number of path through hole 160 do not have particular restriction, but can judge: as shown in Figure 5, and when the diameter of path through hole 160 is that d ', number are that the internal diameter of n, path 33 is when being D, if with aperture opening ratio=n * d ' 2/ D 2* 100 are set at about 24.0～66.4%, then see from the angle of reduce pressure loss and noise to obtain result preferably.
Fig. 7 is the key diagram of expression another embodiment of the present invention.
In the present embodiment, throttle part 200 through be pressed into be fixed on outlet 331 in portion.
Fig. 8 illustrates the details of throttle part.Throttle part 200 is processed into discoid the manufacturing through the sheet material that will for example be made up of aluminum alloy materials, and its peripheral part forms flange part 202.
Central portion at throttle part 200 is provided with a through hole 210 that diameter is bigger.210 face forms the conical surface 204 illustrated embodiment from flange part 202 to through hole, still, also can be tabular surface.
Through flange part 202 is set, it is big that the contact area between the outlet 331 that makes and be pressed into becomes, and realizes fixed installation reliably.
In the present embodiment, the plastic working that forms caulking part can be omitted, manufacturing procedure can be reduced.
Fig. 9, Figure 10 are the key diagrams of expression embodiments of the invention.
In the present embodiment, throttle part 250 has a plurality of path through holes 260.
Shown in figure 10, the peripheral part of throttle part 250 has flange part 252, through be pressed into be fixed on reliably outlet 331 in portion.
As stated; The present invention has following structure: at the outlet that flows to the cold-producing medium of evaporimeter from expansion valve; Through caulking part or be pressed into fixed restriction parts reliably, this throttle part has makes the cold-producing medium throttling and to the mobile function of adjusting of cold-producing medium.
Through this structure, make the cold-producing medium that flows out from outlet also reduced noise by the collision generation of bubble by rectification.In addition; Throttle part can be made through punch process etc. cheaply; And the plastic working through valve body, be pressed into etc. and can easily be fixed on the valve body; Therefore, do not compare with existing product and need increase considerably manufacturing cost, number of components and operation, just can reduce noise effectively.

Claims (7)

1. expansion valve has:
Valve body, this valve body have the inlet port of importing condensed high-pressure refrigerant in condenser, the valve chamber that is communicated with this inlet port, the valve opening that is arranged at this valve chamber, the outlet that will derive to the outside at the cold-producing medium after expanding in this valve opening place and turn back to from evaporimeter compressor cold-producing medium the path of process;
Valve member, this valve member opens and closes said valve opening; And
The valve member drive unit, this valve member drive unit drives said valve member, thereby controls said valve opening aperture,
This expansion valve is characterised in that,
Be provided with the throttle part that is fixed in said outlet through caulking part, said caulking part forms through said valve body is carried out plastic working.
2. expansion valve according to claim 1 is characterized in that, said caulking part through to be arranged at said outlet in the band step reducing diameter part of portion carry out plastic working and form.
3. expansion valve according to claim 1 is characterized in that, said throttle part is the plate-shaped member that central portion has a through hole.
4. expansion valve according to claim 1 is characterized in that, said throttle part is the plate-shaped member with a plurality of path through holes.
5. expansion valve has:
Valve body, this valve body have the inlet port of importing condensed high-pressure refrigerant in condenser, the valve chamber that is communicated with this inlet port, the valve opening that is arranged at this valve chamber, the outlet that will derive to the outside at the cold-producing medium after expanding in this valve opening place and turn back to from evaporimeter compressor cold-producing medium the path of process;
Valve member, this valve member opens and closes said valve opening; And
The valve member drive unit, this valve member drive unit drives said valve member, thereby controls said valve opening aperture,
This expansion valve is characterised in that, is provided with the throttle part of fixing through being pressed at said outlet.
6. expansion valve according to claim 5 is characterized in that, said throttle part is a plate-shaped member, and this plate-shaped member has the flange part that is pressed into said outlet and is formed at a through hole of central portion.
7. expansion valve according to claim 5 is characterized in that, said throttle part is a plate-shaped member, and this plate-shaped member has flange part and a plurality of path through hole that is pressed into said outlet.
CN201110204034.9A 2010-08-26 2011-07-20 Expansion valve Active CN102384611B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010-189756 2010-08-26
JP2010189756A JP2012047393A (en) 2010-08-26 2010-08-26 Expansion valve

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CN102384611A true CN102384611A (en) 2012-03-21
CN102384611B CN102384611B (en) 2016-01-20

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KR (1) KR20120020046A (en)
CN (1) CN102384611B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104235493A (en) * 2013-06-20 2014-12-24 浙江三花汽车零部件有限公司 Expansion valve and method for manufacturing same
CN105758072A (en) * 2014-12-16 2016-07-13 浙江三花汽车零部件有限公司 Thermal expansion valve and making method thereof
CN106895613A (en) * 2015-12-21 2017-06-27 株式会社Tgk Expansion valve
CN108253670A (en) * 2016-12-28 2018-07-06 浙江三花汽车零部件有限公司 A kind of automotive air-conditioning system, heating power expansion valve and its valve body
CN111133240A (en) * 2017-09-25 2020-05-08 株式会社不二工机 Expansion valve
CN111721038A (en) * 2019-03-22 2020-09-29 株式会社鹭宫制作所 Temperature expansion valve and refrigeration cycle system using same

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JP5991871B2 (en) * 2012-04-05 2016-09-14 株式会社不二工機 Expansion valve
JP2014009830A (en) * 2012-06-28 2014-01-20 Fuji Koki Corp Expansion valve
KR102009234B1 (en) * 2012-08-27 2019-08-09 주식회사 두원공조 Expansion valve in vehicle's air conditioner
JP6071764B2 (en) * 2013-06-07 2017-02-01 株式会社不二工機 Expansion valve
JP6182363B2 (en) * 2013-06-07 2017-08-16 株式会社不二工機 Expansion valve
JP6402314B2 (en) * 2014-12-02 2018-10-10 株式会社テージーケー Expansion valve
JP6722923B2 (en) * 2015-12-21 2020-07-15 株式会社テージーケー Expansion valve
CN111219518B (en) * 2018-11-27 2022-03-08 浙江盾安禾田金属有限公司 Electronic expansion valve

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JPH07146032A (en) * 1993-11-26 1995-06-06 Matsushita Seiko Co Ltd Expansion valve
CN1123892A (en) * 1994-11-17 1996-06-05 株式会社不二工机制作所 Expension valve
CN1948795A (en) * 2005-10-14 2007-04-18 株式会社不二工机 Electric motor operated valve

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JPH10160290A (en) * 1996-11-28 1998-06-19 Matsushita Seiko Co Ltd Electric expansion valve
JP2000179996A (en) * 1998-12-16 2000-06-30 Denso Corp Centrifugal accumulator
JP4285897B2 (en) * 2000-09-22 2009-06-24 株式会社日本自動車部品総合研究所 Expansion valve used in refrigeration cycle
JP4114457B2 (en) * 2002-10-11 2008-07-09 ダイキン工業株式会社 Shut-off valve and air conditioner
JP4769036B2 (en) * 2005-02-22 2011-09-07 株式会社鷺宮製作所 Throttle device, flow control valve, and air conditioner incorporating the same
JP4713977B2 (en) * 2005-08-01 2011-06-29 株式会社不二工機 Motorized valve
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Publication number Priority date Publication date Assignee Title
US4479509A (en) * 1981-08-03 1984-10-30 E. I. Du Pont De Nemours And Company Fluid control apparatus
JPH07146032A (en) * 1993-11-26 1995-06-06 Matsushita Seiko Co Ltd Expansion valve
CN1123892A (en) * 1994-11-17 1996-06-05 株式会社不二工机制作所 Expension valve
CN1948795A (en) * 2005-10-14 2007-04-18 株式会社不二工机 Electric motor operated valve

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104235493A (en) * 2013-06-20 2014-12-24 浙江三花汽车零部件有限公司 Expansion valve and method for manufacturing same
CN104235493B (en) * 2013-06-20 2017-10-27 浙江三花汽车零部件有限公司 Expansion valve and its manufacture method
CN105758072A (en) * 2014-12-16 2016-07-13 浙江三花汽车零部件有限公司 Thermal expansion valve and making method thereof
CN106895613A (en) * 2015-12-21 2017-06-27 株式会社Tgk Expansion valve
CN108253670A (en) * 2016-12-28 2018-07-06 浙江三花汽车零部件有限公司 A kind of automotive air-conditioning system, heating power expansion valve and its valve body
CN111133240A (en) * 2017-09-25 2020-05-08 株式会社不二工机 Expansion valve
CN111721038A (en) * 2019-03-22 2020-09-29 株式会社鹭宫制作所 Temperature expansion valve and refrigeration cycle system using same

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KR20120020046A (en) 2012-03-07
CN102384611B (en) 2016-01-20
JP2012047393A (en) 2012-03-08

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