CN101855503A - Expansion valve - Google Patents

Expansion valve Download PDF

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Publication number
CN101855503A
CN101855503A CN200880115992A CN200880115992A CN101855503A CN 101855503 A CN101855503 A CN 101855503A CN 200880115992 A CN200880115992 A CN 200880115992A CN 200880115992 A CN200880115992 A CN 200880115992A CN 101855503 A CN101855503 A CN 101855503A
Authority
CN
China
Prior art keywords
diaphragm
expansion valve
heating power
power expansion
diaphragms
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
Application number
CN200880115992A
Other languages
Chinese (zh)
Inventor
A·维斯特加尔德
J·斯彭伯格
B·汤姆森
K·B·尼尔森
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.)
Danfoss AS
Original Assignee
Danfoss AS
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 Danfoss AS filed Critical Danfoss AS
Publication of CN101855503A publication Critical patent/CN101855503A/en
Pending legal-status Critical Current

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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
    • 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
    • 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
    • F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
    • F25B2341/06—Details of flow restrictors or expansion valves
    • F25B2341/068—Expansion valves combined with a sensor
    • F25B2341/0681—Expansion valves combined with a sensor the sensor is heated

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Diaphragms And Bellows (AREA)
  • Temperature-Responsive Valves (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Glass Compositions (AREA)

Abstract

A thermal expansion valve (1) for a refrigeration system comprises a working element (9) with a diaphragm (15) clamped between a cover plate (12) and a cover ring (10). The diaphragm is a multiple-diaphragm comprising two or more individual diaphragms (16, 17). This makes the multiple-diaphragm more flexible than a single diaphragms and increases the lifetime of the diaphragm. The individual diaphragms are separated by an anti-friction layer to protect against tear, the anti-friction layer can be grease or oil placed between the individual diaphragms or it can be a layer of coating on the diaphragms.

Description

Expansion valve
Technical field
The present invention relates to a kind of heating power expansion valve that is used for refrigeration system, it comprises the have diaphragm chamber operation element of (diaphragm chamber).Expansion valve has the shut-off block that can be moved by the active force of operation element.
Background technology
Heating power expansion valve generally includes an operation element, and this operation element has the diaphragm that is clipped between cover plate and the bezel ring.The space of diaphragm top links pressure sensor by capillary or pressure produces temperature sensor, and its pressure acts on diaphragm from the top.Main refrigerant pressure and act on diaphragm the other way around in the valve against the spring of plate.
In the heating power expansion valve that can buy, diaphragm element is the single-iris of being made by single-layer metal, common steel.Because act on the power on the diaphragm, single-iris meets with stresses and deformation.
Stress and deformation passing in time can make the diaphragm wearing and tearing, shortens the service life of valve.
Summary of the invention
Task of the present invention is to make a kind of diaphragm element that is used for the heating power expansion valve of refrigeration system, and it can meet with stresses, deformation, and prolongs the service life of diaphragm element.
Address the above problem by the following technical programs according to the present invention: will replace to the multimembrane sheet that comprises single diaphragm more than two by the single-iris that single-layer metal is made.
The problem of multimembrane sheet is cold welding and the wearing and tearing between the single diaphragm.Solve the problems referred to above by between single diaphragm, adding the antifriction layer.The antifriction layer can be a spot of lubricating grease or oil.The other method that addresses this problem is the metal level covering diaphragm with carbon-coating, rubber layer, plastic layer or picture copper or tin.
The multimembrane sheet comprises single diaphragm more than two, and the single diaphragm in the multimembrane sheet is thinner than traditional single-iris, so the multimembrane sheet has higher flexibility, be not vulnerable to the infringement that stress and deformation cause, so the multimembrane sheet has the more long life.
The present invention relates to a kind of heating power expansion valve that is used for refrigeration system, comprise operation element, this operation element comprises diaphragm chamber, base ring and cover plate, and wherein diaphragm chamber comprises the multimembrane sheet between base ring and cover plate, and the multimembrane sheet comprises single diaphragm more than two.
The multimembrane sheet is between base ring and cover plate, and the multimembrane sheet is made by two, three or more single diaphragms.Its advantage is: single diaphragm is thinner than traditional single-iris, thereby has more elasticity, influenced by stress, strain and deformation, so it has the more long life.Single diaphragm supports each other, so diaphragm element has the rigidity identical with traditional single-iris.
Each single diaphragm all is complete diaphragm, and can be used as single-iris.Therefore, if a single diaphragm breakage, for example the metallic particles that stays in the process pierces through single diaphragm, so another single diaphragm still in position, valve is still worked.
Single diaphragm by the antifriction layer separately.This is owing to there is not the antifriction layer, and single steel diaphragm can slide over each other, and friction causes and tear and cold welding, destroys single diaphragm.For avoiding above-mentioned situation, the antifriction material layer is placed between the single diaphragm.
The antifriction layer can be lubricating grease or oil, or other suitable fluid.This has solved the problems referred to above, has prevented the friction between the single diaphragm.
The antifriction layer is rubber or plastics also.It can be the double faced adhesive tape belt.In packaging technology, it is easier than using lubricating grease or oil that rubber strip or band are placed between the single diaphragm.
Lubricating grease, oil or other material layer are placed in replacement between single diaphragm, diaphragm can adopt suitable material to apply.Owing to do not add additional materials during assembly technology, therefore above scheme makes assembly technology simpler.
Coating can be made by carbon, rubber or plastic material.For example, can use as carbon or Teflon diamond.Coating also can be made by copper, zinc, silver, nickel or other suitable metal or alloy.Except prevent to tear with cold welding, coating also makes diaphragm harder, thereby exists under the situation of the metallic particles that comes off more not fragile in valve.
Description of drawings
Followingly the present invention is described in further detail with reference to the preferred embodiment shown in the accompanying drawing, wherein:
Fig. 1 has shown according to valve of the present invention;
Fig. 2 has shown according to operation element of the present invention; With
Fig. 3 has shown the exploded view of operation element among Fig. 2.
The specific embodiment
In an embodiment, the multimembrane sheet comprises two single diaphragms.But according to the present invention, the multimembrane sheet also can comprise three with upper diaphragm.
Valve shown in Fig. 11 is the expansion valve that is used for refrigeration system.It comprises the shell 2 with three nozzles, the liquid refrigerant that nozzle 3 is used to enter, and the cold-producing medium that nozzle 4 is used to flow out, nozzle 5 are used to be connected to sensor line and axle 6.One end of shell 2 is by operation element 9 sealings; Operation element comprises base ring (base ring) 10, diaphragm chamber 11 and cover plate 12.Diaphragm chamber is connected to sensor 14 by capillary 13.
Fig. 2 has shown operation element 9, has base ring 10, diaphragm chamber 11, cover plate 12, plate 18, bolt 19 and multimembrane sheet 15, and its cover plate 12 has interface channel 13a, is used to connect the capillary (not shown).
Therefore, two diaphragms 15 are subjected to by the pressure that fluid evaporator produced the sensor 14 from the top, and below be subjected to the pressure of cold-producing medium and spring (not shown), wherein the pressure of cold-producing medium is detected at nozzle 5 places.
Fig. 3 has shown the exploded view of operation element 9, comprises base ring 10, cover plate 12, plate 18, bolt 19 and multimembrane sheet, and in the present embodiment, the multimembrane sheet comprises primary diaphragm 16 and secondary diaphragm 17.
Diaphragm is typically made by stainless steel.The typically thick 0.08-0.20mm of single diaphragm in the multimembrane sheet.The rigidity that the multimembrane sheet of the single diaphragm that to have two thickness be 0.08mm is had and thickness are that the rigidity of single-iris of 0.1mm is the same.
In above embodiment, two identical single diaphragms have been used.Yet, also can use slightly difference but the plural diaphragm of no-float.This can be by following realization: use identical mould side by side to form single diaphragm, thereby make the waveform in the single diaphragm accurately cooperate.This can reduce the active force between the single diaphragm, and reduces the risk of tearing.

Claims (7)

1. heating power expansion valve that is used for refrigeration system, this heating power expansion valve comprises operation element, this operation element has diaphragm chamber, base ring and cover plate, it is characterized in that, this diaphragm chamber (11) comprises the multimembrane sheet (15) that is positioned between described base ring (10) and the described cover plate (12), and described multimembrane sheet (15) comprises two or more individual diaphragms (16,17).
2. heating power expansion valve according to claim 1 is characterized in that, described individual diaphragm (16,17) by the antifriction layer separately.
3. heating power expansion valve according to claim 2 is characterized in that, described antifriction layer is lubricating grease or oil or other suitable fluid.
4. heating power expansion valve according to claim 2 is characterized in that, described antifriction layer is rubber or plastics.
5. according to each described heating power expansion valve among the claim 1-4, it is characterized in that described individual diaphragm comprises coating.
6. according to the heating power expansion valve of claim 5, it is characterized in that described coating is made by carbon, rubber, Teflon or plastic material.
7. heating power expansion valve according to claim 5 is characterized in that, described coating is made by copper, tin, zinc or other suitable metal or alloy.
CN200880115992A 2007-11-13 2008-11-12 Expansion valve Pending CN101855503A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DKPA200701606 2007-11-13
DKPA200701606 2007-11-13
PCT/DK2008/000402 WO2009062511A1 (en) 2007-11-13 2008-11-12 Expansion valve

Publications (1)

Publication Number Publication Date
CN101855503A true CN101855503A (en) 2010-10-06

Family

ID=40243928

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200880115992A Pending CN101855503A (en) 2007-11-13 2008-11-12 Expansion valve

Country Status (6)

Country Link
US (1) US20100320278A1 (en)
EP (1) EP2225502B1 (en)
CN (1) CN101855503A (en)
AT (1) ATE511067T1 (en)
BR (1) BRPI0820521B1 (en)
WO (1) WO2009062511A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103016830A (en) * 2011-09-28 2013-04-03 杭州三花研究院有限公司 Thermal expansion valve
CN107143676A (en) * 2016-03-01 2017-09-08 株式会社鹭宫制作所 Capacity adjusts valve

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101968118B (en) * 2009-07-28 2014-07-30 丹佛斯（天津）有限公司 Expansion valve and diaphragm support structure thereof

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103016830A (en) * 2011-09-28 2013-04-03 杭州三花研究院有限公司 Thermal expansion valve
CN103016830B (en) * 2011-09-28 2015-12-16 杭州三花研究院有限公司 A kind of heating power expansion valve
CN107143676A (en) * 2016-03-01 2017-09-08 株式会社鹭宫制作所 Capacity adjusts valve

Also Published As

Publication number Publication date
EP2225502A1 (en) 2010-09-08
US20100320278A1 (en) 2010-12-23
BRPI0820521B1 (en) 2019-10-08
ATE511067T1 (en) 2011-06-15
EP2225502B1 (en) 2011-05-25
BRPI0820521A2 (en) 2015-06-16
WO2009062511A1 (en) 2009-05-22

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Application publication date: 20101006