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WO2002077545A1 - Vanne de selection de gaz haute et basse pressions equipant un refrigerateur - Google Patents

Vanne de selection de gaz haute et basse pressions equipant un refrigerateur Download PDF

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Publication number
WO2002077545A1
WO2002077545A1 PCT/JP2002/001165 JP0201165W WO02077545A1 WO 2002077545 A1 WO2002077545 A1 WO 2002077545A1 JP 0201165 W JP0201165 W JP 0201165W WO 02077545 A1 WO02077545 A1 WO 02077545A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure gas
rotor
housing
low pressure
refrigerator
Prior art date
Application number
PCT/JP2002/001165
Other languages
English (en)
Japanese (ja)
Inventor
Tomohiro Koyama
Alphons De Waele
Original Assignee
Sumitomo Heavy Industries, Ltd.
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 Sumitomo Heavy Industries, Ltd. filed Critical Sumitomo Heavy Industries, Ltd.
Priority to DE10296590T priority Critical patent/DE10296590T5/de
Priority to JP2002575553A priority patent/JPWO2002077545A1/ja
Priority to US10/415,350 priority patent/US20040040315A1/en
Publication of WO2002077545A1 publication Critical patent/WO2002077545A1/fr

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
    • F16K39/00—Devices for relieving the pressure on the sealing faces
    • F16K39/06—Devices for relieving the pressure on the sealing faces for taps or cocks
    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/072—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members
    • F16K11/076—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members with sealing faces shaped as surfaces of solids of revolution
    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
    • F16K11/085—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
    • F16K11/0856—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug having all the connecting conduits situated in more than one plane perpendicular to the axis of the plug
    • 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
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/14—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
    • F25B9/145—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle pulse-tube cycle
    • 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
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/006—Gas cycle refrigeration machines using a distributing valve of the rotary type
    • 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
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/14—Compression machines, plants or systems characterised by the cycle used 
    • F25B2309/1408—Pulse-tube cycles with pulse tube having U-turn or L-turn type geometrical arrangements
    • 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
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/14—Compression machines, plants or systems characterised by the cycle used 
    • F25B2309/1413—Pulse-tube cycles characterised by performance, geometry or theory
    • 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
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/14—Compression machines, plants or systems characterised by the cycle used 
    • F25B2309/1418—Pulse-tube cycles with valves in gas supply and return lines
    • 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
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/14—Compression machines, plants or systems characterised by the cycle used 
    • F25B2309/1418—Pulse-tube cycles with valves in gas supply and return lines
    • F25B2309/14181—Pulse-tube cycles with valves in gas supply and return lines the valves being of the rotary type
    • 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
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/14—Compression machines, plants or systems characterised by the cycle used 
    • F25B2309/1424—Pulse tubes with basic schematic including an orifice and a reservoir
    • 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
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/14—Compression machines, plants or systems characterised by the cycle used 
    • F25B2309/1424—Pulse tubes with basic schematic including an orifice and a reservoir
    • F25B2309/14241—Pulse tubes with basic schematic including an orifice reservoir multiple inlet pulse tube
    • 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
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves

Definitions

  • the present invention relates to a high-low pressure gas switching valve of a refrigerator, and in particular, has a long life, high efficiency, small size, and light weight suitable for use in a pulse tube refrigerator or a giant-fed McMahon cycle (GM) refrigerator.
  • the present invention relates to a high-low pressure gas switching valve for a refrigerator that does not wear and does not generate dust. Background technology
  • a high-low pressure gas switching valve is used to periodically switch between high-pressure gas and low-pressure gas generated by the compressor 10 and send it to the refrigerator 12 14 are used.
  • 12A is a pulse tube
  • 12B is a regenerative tube
  • 12C is a cooling stage
  • 16 is an orifice
  • 18 is a buffer tank.
  • a conventional high / low pressure gas switching valve is, as described in, for example, Japanese Patent No. 2617681, a valve housing with a pin 22 having a shape as shown in FIG. Valve body 20, which is stopped by 26 and is urged in the direction of valve plate 30 by coil spring 24, valve housing 26 for accommodating valve body 20, and a shape as shown in FIG. 4
  • a space 26 b on the left side of the valve body 20 is connected to a high-pressure gas side of a compressor (not shown) via a high-pressure gas flow path 26 a of the valve housing 26.
  • the space 3 4 b on the right side of the compressor is connected to the low-pressure gas side of the compressor via the low-pressure gas flow path 34 a of the motor casing 34, and due to the difference between these pressures and the action of the spring 24, the valve
  • the main body 20 is pressed against the valve plate 30 and the valve main body high-pressure gas flow path 20a, the valve plate high-pressure gas flow path 30a, the valve plate low-pressure gas flow path 30b, and the valve main body refrigerator are located on both sides.
  • the side gas flow path 20 b Rules are provided to a side gas flow path 20 b Rules.
  • reference numeral 36 denotes a bearing that rotatably supports the valve plate 30.
  • valve body 20 and the valve plate 30 is rotated by the drive motor 32 (here, the valve plate 30), and the other (here, the valve body 20) is prevented from rotating, and is formed on the contact surface.
  • the gas is switched at the timing and opening according to the pattern shown in Fig. 5 (when supplying high pressure) and Fig. 6 (when recovering low pressure), and the flow path or space 26a 26 b ⁇ 20 a ⁇ 30 a ⁇ 20 b ⁇ 26 c (when supplying high pressure) or flow path or space 26 c ⁇ 20 b ⁇ 30 b ⁇ 34 b- ⁇ 34 a (shown in Fig.
  • valve body 20 is pressed against the valve plate 30 to slide and seal, so that the valve body 20 and the valve plate 30 are worn out and require periodic replacement.
  • the sliding resistance is large, and it is necessary to use a large high-torque motor for the drive motor 32, which leads to an increase in the size of the unit itself.
  • the flow path formed in the valve body 20 and the valve plate 30 has a complicated shape, causing a large pressure loss, leading to a reduction in the capacity of the refrigerator.
  • Japanese Patent Application Laid-Open No. 2001-91078 discloses a rotor 101 having a circular horizontal cross section that rotates about an axis, and the rotor 101 is rotatably incorporated.
  • a plurality of ports 105 to 112 are provided on the outer peripheral surface of the rotor 101, and the ports 105 to 112 are provided on the inner peripheral surface of the housing 102.
  • a plurality of ports 1 1 1 to 1 2 corresponding to 1 1 2 are provided, and by rotation of the rotor 101, predetermined ports 105 to 1 08 of the rotor 101 and the above Match ports 1 17, 1 18, 1 20, 1 2 2 of housing 102 with both ports 105-108, 1 17, 1 18, 1 20, 1 Rotary to switch between the state where 2 2 is connected and the state where the above mates are removed and both ports 105-: L 08, 1 17, 1 18, 120 and 1 '2 2 are not connected
  • 103 is a bearing and 104 is a motor A.
  • each port is formed asymmetrically with respect to the axis of the rotor 101, it cannot be balanced when pressure is applied, and the leakage from high pressure to low pressure increases, causing the problem that it does not work well. Had.
  • An object of the present invention is to provide a high-low pressure gas switching valve which has a long life, high efficiency, can be reduced in size and weight, does not wear, and does not generate dust. Make it an issue.
  • the present invention relates to a high / low pressure gas switching valve of a refrigerator for periodically switching between a high pressure gas and a low pressure gas from a compressor and sending the gas to the refrigerator, and a housing having a substantially cylindrical inner peripheral surface;
  • a housing passage including a high-pressure gas passage and a low-pressure gas passage formed on the wall of the housing; and a bearing supported by a bearing, and separated from the inner peripheral surface of the housing by a small gap to rotate without contacting the housing.
  • a high-pressure gas supply port and a low-pressure gas recovery port of the housing comprising: a substantially cylindrical rotor; and a rotor flow path formed in the rotor and through which the gas flows through the housing flow path and the opening at a combined timing.
  • the low-pressure gas recovery port of the housing is provided in the same plane as the high-pressure gas supply port so that a harmful moment does not act on the rotor rotating shaft due to the supplied high-pressure gas and low-pressure gas pressure. It is.
  • the high-pressure gas or the low-pressure gas flowing into the rotor flow path is supplied to the refrigerator through a flow path formed on the center axis of the rotor and the end face of the housing.
  • the flow path formed in the center axis of the rotor is opened at both end faces of the rotor, and the same pressure is applied to both sides of the rotor to cancel the load in the direction of the center axis of the rotor and maintain the position of the rotor appropriately.
  • the load on the motor has been reduced.
  • At least one of the nosing or the rotor is provided with a slit for timing adjustment.
  • the present invention also provides a refrigerator using the high / low pressure gas switching valve.
  • the present invention further provides a low-temperature device using the refrigerator.
  • FIG. 1 is a block diagram showing an overall configuration of an example of a pulse tube refrigerator to which the present invention is applied.
  • Fig. 2 is a longitudinal sectional view showing the overall configuration of an example of a conventional high / low pressure gas switching valve.
  • Fig. 3 is a perspective view showing the shape of the valve body.
  • Fig. 4 is a perspective view showing the shape of the pulp plate.
  • Fig. 5 is a front view showing the relative relationship between the valve body and the valve plate when high-pressure gas is supplied.
  • Fig. 6 is a front view showing the relative relationship between the pulp body and the valve plate when the low-pressure gas is supplied.
  • FIG. 7 is a longitudinal sectional view showing a configuration of a conventional rotary valve described in Japanese Patent Application Laid-Open No. 2001-91078.
  • FIG. 8 is a longitudinal sectional view showing the entire configuration of the embodiment of the high / low pressure gas switching valve according to the present invention.
  • FIG. 9 is a transverse sectional view showing the same high pressure gas supply state.
  • FIG. 10 is a cross-sectional view showing the same low-pressure gas supply state.
  • FIG. 11 is a perspective view showing a valve housing used in the embodiment.
  • FIG. 12 is a perspective view showing the same rotor.
  • FIG. 13 is a pipeline diagram showing an example in which the present invention is applied to a 4-valve type, loess tube refrigerator.
  • FIG. 14 is an example in which the present invention is applied to an active buffer type pulse tube refrigerator.
  • FIGS. 8 longitudinal section
  • FIG. 9 cross section in a state where high pressure gas is supplied to the refrigerator
  • FIG. 10 low pressure gas is supplied to the refrigerator
  • a valve housing 42 having a substantially cylindrical inner peripheral surface and having a shape as shown in FIG. 11 is formed axially symmetrically on the wall surface of the valve housing 42.
  • the pair of high-pressure gas passages 42a and the pair of low-pressure gas passages 42b (housing flow
  • the bearing is supported by bearings 44, 45, and rotates without contacting the valve housing 42 with a small gap 43 between the inner peripheral surface of the housing 42.
  • a substantially cylindrical rotor 46 as shown in FIG.
  • a switching gas passage 46a through which the gas flows, and a refrigerator-side gas passage 46b (collectively referred to as a rotor passage).
  • the size of the small gap 43 can be set to, for example, 5 to 100 m. That is, it is required to be 5 ⁇ m or more to prevent contact, and is preferably 100 ⁇ m or less to prevent the adverse effect on the performance of the refrigerator.
  • 50 is a drive motor for rotating the rotor 46 via a coupling 52
  • 54 is a casing of the drive motor 50
  • 54a is inside the casing 54. Space.
  • the rotor 46 supported by the two bearings 44, 45 rotates without contacting the housing 42.
  • a flow path is formed in the rotor 46 and the housing 42, and gas flows into the rotor flow path at the combined timing of the respective openings. That is, as shown in FIG. 9, when the high-pressure gas flow path 42a of the valve housing 42 and the switching flow path 46a of the rotor 46 face each other, the high-pressure gas flow path or space 42a ⁇ 46 It is supplied to the refrigerator via a ⁇ 46 b ⁇ 42 c.
  • FIG. 9 shows that shows that is, as shown in FIG. 9, when the high-pressure gas flow path 42a of the valve housing 42 and the switching flow path 46a of the rotor 46 face each other, the high-pressure gas flow path or space 42a ⁇ 46 It is supplied to the refrigerator via a ⁇ 46 b ⁇ 42 c.
  • the high-pressure gas supply port 42 a from the compressor is provided in two systems at positions axially symmetric with respect to the rotor 46, each of which is connected to the rotor shaft in the vertical direction. Since there are two systems at axisymmetric positions, the load in the vertical direction of the rotating shaft of the rotor 46 due to the supplied high-pressure gas pressure is canceled, and the gap 43 between the rotor 46 and the housing 42 is properly maintained.
  • the low pressure gas supply port 42b from the compressor has the same structure as the high pressure gas side, while preventing gaps and uneven wear of the shaft, and reducing the load on the motor 50.
  • the flow path is formed at the same angle as 90 ° on the same plane as the supply passage and the high-pressure gas flow path 42a.
  • the space 54a in the casing in which the drive motor 50 is installed is communicated with the space 42c supplied to the refrigerator by the rotor flow path 46b, and by always having the same pressure, The axial load on the rotor 46 is canceled, and the position of the rotor 46 is maintained at a proper position to prevent the gap from being offset and the rotor to wear unevenly, and to reduce the load on the drive motor 50.
  • the rotational resistance of the rotor 46 is reduced as much as possible, and the load on the drive motor 50 is reduced, so that a small motor can be used, and the unit can be reduced in size and weight. Power consumption can be reduced.
  • the slits 42 s and 46 s are provided in both the housing 42 and the rotor 46, so that the valve switching timing can be easily changed.
  • the slits 42 s and 46 s can be either only one or can be omitted.
  • valve rotor 46 total length 24 mm, gas flow path 42 & ⁇ 42 ⁇ :, inner diameter of 46 a, 46 b 3 mm, minute gap for sealing 43 spacing 15 ⁇ m, drive motor 5 Q, drive voltage 1 to 24 V, DC drive current 5 mA (when driving 3 V DC), 1 to; by switching drive voltage; switching frequency is variable to about LOH z
  • the bearings 44 and 45 were made to be a standard product. The loss due to leakage from the sealing small gap 43 in the high and low pressure gas switching valve was about 40 W, Since it was about 0.5% with respect to the compressor input, it was within a negligible range.
  • the valve unit of the present invention can be used not only for various pulse tubes, but also for a phase control mechanism of a pulse tube refrigerator as shown in the following examples.
  • two openable valves 61 and 62 are used to control the phase of the high-temperature end of the pulse tube 12 A instead of the knocker.
  • One end of the two valves 61, 62 is connected to the hot end of the pulse tube 12A through a common orifice 16.
  • the ⁇ ya ends are connected to the high pressure gas and low pressure gas supply lines of the compressor 10, respectively.
  • the two valves open and close periodically according to a predetermined timing chart to optimize the phase of the pressure change and the gas displacement inside the Norse tube, and bring out a predetermined refrigeration performance.
  • phase control valve is essentially the same as that of the high / low pressure switching valve cutout 14 between the regenerator 12 and the compressor 10. Can also be used for this phase control valve.
  • the pulse tube 12 ⁇ phase control at the high temperature end is performed by one or more buffers instead of the alignment of one buffer and the orifice. It is performed in combination with the same number of open / close valves 61, 62 as 18 and 19. These buffers 18 and 19 are maintained at an intermediate pressure between the high and low pressures of the compressor, but the pressure in each buffer is different.
  • Each buffer is connected to the hot end of the pulse tube via its own switching valve.
  • Each open / close valve periodically opens and closes according to a predetermined timing 'chart, thereby optimizing the phase between the pressure change of the pulse tube portion and the gas displacement, and brings out a predetermined refrigeration performance.
  • phase control valve is essentially the same as that of the high / low pressure switching valve unit 14 between the regenerator 12 B and the compressor 10.
  • This phase control valve can also be used.
  • the present invention can be used for a high-low pressure gas switching valve of a cryogenic refrigerator such as a GM refrigerator or a pulse tube refrigerator.
  • the balance of the load of the axial direction of a rotor rotating shaft and a perpendicular direction is balanced.
  • the gap between the rotor and the housing can be appropriately maintained, and the load on the motor can be reduced. Therefore, it is possible to make the high / low pressure gas switching valve long life, high efficiency, small size and light weight, and not to wear and generate dust. Power saving can be achieved.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Multiple-Way Valves (AREA)

Abstract

L'invention concerne une vanne de sélection de gaz haute et basse pression équipant un réfrigérateur. Cette vanne comprend un logement qui présente une surface périphérique interne généralement cylindrique, des passages ménagés dans le logement comprenant un passage de gaz haute pression et un passage de gaz basse pression, lesquels passages sont formés dans la surface de la paroi du logement; un rotor généralement cylindrique soutenu par des supports et orienté à travers un espace mort minute depuis la surface périphérique interne du logement sans entrer en contact avec le logement, un passage ménagé dans le rotor pour permettre l'écoulement du gaz à un rythme qui permet d'aligner le passage ménagé dans le logement avec une portion d'ouverture, plusieurs orifices d'admission de gaz haute pression et basse pression étant ménagés dans le logement à une position symétrique par rapport à l'axe de l'arbre rotatif du rotor de manière à éliminer une charge verticale au moyen d'une pression gazeuse fournie à la vanne sur l'arbre rotatif du rotor, afin de maintenir correctement l'espace mort entre le rotor et le logement.
PCT/JP2002/001165 2001-03-27 2002-02-12 Vanne de selection de gaz haute et basse pressions equipant un refrigerateur WO2002077545A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE10296590T DE10296590T5 (de) 2001-03-27 2002-02-12 Hoch-Niedrig-Druckgas-Wegeventil für Kühleinrichtung
JP2002575553A JPWO2002077545A1 (ja) 2001-03-27 2002-02-12 冷凍機の高低圧ガス切換弁
US10/415,350 US20040040315A1 (en) 2001-03-27 2002-02-12 High and low pressure gas selector valve of refrigerator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001090627 2001-03-27
JP2001-090627 2001-03-27

Publications (1)

Publication Number Publication Date
WO2002077545A1 true WO2002077545A1 (fr) 2002-10-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2002/001165 WO2002077545A1 (fr) 2001-03-27 2002-02-12 Vanne de selection de gaz haute et basse pressions equipant un refrigerateur

Country Status (4)

Country Link
US (1) US20040040315A1 (fr)
JP (1) JPWO2002077545A1 (fr)
DE (1) DE10296590T5 (fr)
WO (1) WO2002077545A1 (fr)

Cited By (9)

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JP2007518956A (ja) * 2004-01-20 2007-07-12 住友重機械工業株式会社 極低温冷凍機の低トルクバルブ
CN101839356B (zh) * 2010-05-14 2011-08-17 南京柯德超低温技术有限公司 低温制冷机用无磨损配气阀
CN102661409A (zh) * 2012-05-10 2012-09-12 南京普鲁卡姆电器有限公司 双气源集成阀及出气压力自适应调节方法
CN105016032A (zh) * 2014-04-15 2015-11-04 藤原酿造机械株式会社 立式旋转阀
US9739389B2 (en) 2011-04-08 2017-08-22 David Deng Heating system
US9752782B2 (en) 2011-10-20 2017-09-05 David Deng Dual fuel heater with selector valve
CN107449171A (zh) * 2016-05-31 2017-12-08 住友重机械工业株式会社 超低温制冷机
US10073071B2 (en) 2010-06-07 2018-09-11 David Deng Heating system
US10222057B2 (en) 2011-04-08 2019-03-05 David Deng Dual fuel heater with selector valve

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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WO2005106352A2 (fr) * 2004-03-10 2005-11-10 Praxair Technology, Inc. Tube emetteur d'impulsions basse frequence dote d'un dispositif pilote exempt d'huile
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