DK177097B1 - Valve for refrigeration compressor and use - Google Patents
Valve for refrigeration compressor and use Download PDFInfo
- Publication number
- DK177097B1 DK177097B1 DKPA201000410A DKPA201000410A DK177097B1 DK 177097 B1 DK177097 B1 DK 177097B1 DK PA201000410 A DKPA201000410 A DK PA201000410A DK PA201000410 A DKPA201000410 A DK PA201000410A DK 177097 B1 DK177097 B1 DK 177097B1
- Authority
- DK
- Denmark
- Prior art keywords
- valve
- piston
- pressure
- sliding body
- compressor
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
- F04B39/102—Adaptations or arrangements of distribution members the members being disc valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
Abstract
Opfindelsen omfatter en ventil (5,8,10,13,16,17) til en stempelbaseret køle/fryse kompressor. Ventilen (5,8,10,13,16,17) monteres i kølekompressorens sugeport (3) og forsynes med kølemiddel såsom Flasch gas fra mellemkøler-underkøler eller lignende. Med ventilen (5,8,10,13,16,17) monteret i en kølekompressor forøges den slaglængdeperiode hvor kølemidlet drives rundt i køleanlægget af den stempelbaserede kompressor. Med ventilen (5,8,10,13,16,17) forøges virkningsgraden af kompressoren med op til 15%. Det er en del af opfindelsen at ventilen anvendes til C02 baserede kølemidler.The invention comprises a valve (5,8,10,13,16,17) for a piston-based refrigeration / freezing compressor. The valve (5,8,10,13,16,17) is mounted in the suction port (3) of the refrigeration compressor and is supplied with refrigerant such as Flasch gas from the intercooler-subcooler or the like. With the valve (5,8,10,13,16,17) mounted in a refrigeration compressor, the stroke period during which the refrigerant is driven around the refrigeration system by the piston-based compressor is increased. With the valve (5,8,10,13,16,17) the efficiency of the compressor is increased by up to 15%. It is part of the invention that the valve is used for CO 2 based refrigerants.
Description
DK 177097 B1DK 177097 B1
Ventil til kølekompressor samt anvendelse.Valve for refrigeration compressor and use.
Opfindelsen angår en ventil monteret i en stempel baseret kølekompressor, hvor stemplet bevæges i en cylinder med et topstykke, som indsuger et 5 kølemiddel via en sugeport, der adskilles fra cylinderen af en sugeventil, og efter komprimering presser kølemidlet ud via en trykport, hvor ventilen omfatter et delvist cylindrisk glidelegeme, der glider i en foring, som er placeret mellem topstykket og en ventiltop 10 Desuden angår opfindelsen anvendelse af ventil.The invention relates to a valve mounted in a piston-based refrigeration compressor, in which the piston is moved in a cylinder with a head which injects a refrigerant via a suction port which is separated from the cylinder by a suction valve, and after compression the refrigerant extends through a pressure port where the valve comprises a partially cylindrical sliding member sliding in a liner located between the top piece and a valve top 10. In addition, the invention relates to the use of valve.
I køle/frost anlæg med stempel baserede kølekompressorer der driver et kølemiddel i et lukket kredsløb med en fordamper og en kondensator anvendes i stadigt stigende omfang C02 baserede kølemidler såsom 15 R744.In refrigeration / frost systems with piston-based refrigeration compressors operating a refrigerant in a closed circuit with an evaporator and a condenser, CO 2 based refrigerants such as R744 are increasingly used.
Et andet af disse ofte anvendte typer kølemidler er benævnt R 404 A, der er brugt som eksempel i dette patentskrift, giver følgende karakteristika for køleanlægget: 20Another of these commonly used types of refrigerant is referred to as R 404 A, which is used as an example in this patent, giving the following characteristics of the refrigeration system:
Trykket Po i fordamperen er ved - 35° C: 0,6 bar.The pressure Po in the evaporator is at - 35 ° C: 0.6 bar.
Trykket Pc i kondensatoren er ved + 40°C: 17 bar.The pressure Pc in the capacitor is at + 40 ° C: 17 bar.
Med den kendte teknik giver ovenstående karakteristika følgende 25 funktionalitet i en stempel baseret kølekompressoren forsynet med en trykstyret sugeventil i sugeporten, hvor kølemiddel tilføres kompressoren og en ligeledes trykstyret trykventil i en trykport, hvor kølemidlet presses ud af kølekompressoren.With the prior art, the above characteristics provide the following functionality in a piston based refrigeration compressor provided with a pressure controlled suction valve in the suction port where refrigerant is supplied to the compressor and also a pressure controlled pressure valve in a pressure port where the refrigerant is squeezed out of the refrigeration compressor.
30 Når stemplet i kølekompressoren bevæger sig nedad og trykket over stemplet bliver lavere end Po, som i eksemplet er 0,6 bar, åbner DK 177097 B1 2 sugeventilen og gassen fra fordamperen strømmer gennem sugeporten ind i cylinderen over stemplet.When the piston in the refrigeration compressor moves downward and the pressure across the piston becomes lower than Po, which in the example is 0.6 bar, the suction valve opens and the gas from the evaporator flows through the suction port into the cylinder above the piston.
På det tidspunkt hvor stemplet når bunden og efterfølgende begynder at 5 bevæge sig op er trykket i cylinderen lig med Po trykket på 0,6 bar.At the time the piston reaches the bottom and subsequently begins to move up, the pressure in the cylinder is equal to the Po pressure of 0.6 bar.
I det stemplet bevæger sig op stiger trykket over stemplet og sugeventilen lukker.As the piston moves up, the pressure rises above the piston and the suction valve closes.
10 Da trykventilen ikke vil åbne før trykket er lig med eller større end Pc trykket på 17 bar, skal stemplet næsten bevæge sig helt til top, før dette sker.10 Since the pressure valve will not open until the pressure is equal to or greater than the Pc pressure of 17 bar, the piston must move almost to the top before this occurs.
Størstedelen af slaglængden anvendes således til at udligne trykket mellem Po og Pc, hvor kompressoren i disse faser hverken suger eller udpresser 15 kølemiddel.Thus, the majority of the stroke length is used to equalize the pressure between Po and Pc, whereby the compressor in these phases neither sucks nor compresses refrigerant.
JP1262388 A beskriver den kendte teknik i form af en ventil til en stempel baseret kølekompressor, hvor stemplet bevæges i en cylinder med et topstykke, som indsuger et kølemiddel via en sugeport, der adskilles fra 20 cylinderen af en sugeventil, og efter komprimering presser kølemidlet ud via en trykport kendetegnet ved et ventilen omfatter et delvist cylindrisk glidelegeme, der glider i en foring, som er placeret mellem topstykket og en ventiltop, hvor glidelegemet presses ned mod et hul i topstykket, og hvor foringen penetreres af et indløbsrør placeret nær topstykket samt et 25 udløbsrør placeret nær ventiltoppen.JP1262388 A discloses the prior art in the form of a valve for a piston-based refrigeration compressor, in which the piston is moved in a cylinder with a cylinder which injects a refrigerant via a suction port which is separated from the cylinder by a suction valve and after compressing the refrigerant extends out. via a pressure port characterized by a valve comprises a partially cylindrical sliding member sliding in a liner positioned between the top piece and a valve top, wherein the sliding body is pressed down against a hole in the head piece and the liner being penetrated by an inlet pipe located near the head piece and a 25 outlet pipes located near the valve top.
Det er en effektivitetsmæssig ulempe ved den kendte teknik, at så stor en del af slaglængden anvendes til trykudligning frem for drivning af kølemidlet i et køle/fryse anlæg.It is an efficiency disadvantage of the prior art that so much of the stroke length is used for pressure equalization rather than driving the refrigerant in a refrigerator / freezer system.
Det er derfor et formål med opfindelsen, at forbedre den kendte teknik der 30 3 DK 177097 B1 omfatter stempelbaserede kølekompressorer.It is therefore an object of the invention to improve the prior art comprising piston-based refrigeration compressors.
Opfindelsens formål tilgodeses ved en ventil til en stempel baseret kølekompressor af den i indledningen til krav 1 angivne type, som er 5 karakteristisk ved at der mellem ventiltoppen og glidelegemet er monteret en fjeder, som presser glidelegemet ned mod et hul i topstykket, og hvor der i glidelegemet er placeret en indvendig ventil, og hvor foringen penetreres af et indløbsrør placeret nær topstykket samt et udløbsrør placeret nær ventiltoppen.The object of the invention is met by a valve for a piston-based cooling compressor of the type specified in the preamble of claim 1, which is characterized in that a spring is mounted between the valve top and the sliding body, which presses the sliding body down towards a hole in the cylinder head and where an inner valve is placed in the sliding body and the liner is penetrated by an inlet pipe located near the cylinder head and an outlet pipe located near the valve top.
10 På denne måde bliver det således muligt at drive kølemidlet i kølesystemet 1 en udvidet del af stemplets slaglængde, hvorved effektiviteten af køleanlægget forøges.In this way it thus becomes possible to drive the refrigerant in the cooling system 1 an extended part of the stroke of the piston, thereby increasing the efficiency of the cooling system.
15 Øvrige hensigtsmæssige udførelsesformer for ventilen er angivet i kravene 2 til 5.Other suitable embodiments of the valve are set forth in claims 2 to 5.
Som nævnt angår opfindelsen også anvendelsen af ventilen i stempelbaserede kølekompressorer.As mentioned, the invention also relates to the use of the valve in piston-based refrigeration compressors.
2020
Herved bliver det muligt, at forbedre effektiviteten af køleanlæg med op til 15 %.This makes it possible to improve the efficiency of refrigeration systems by up to 15%.
Yderligere hensigtsmæssige udførelsesformer af anvendelsen fremgår af 25 krav 7.Further convenient embodiments of the use are set forth in claim 7.
Opfindelsen skal herefter nærmere forklares under henvisning til tegningerne på hvilke: 30 Fig. 1 viser et snit af en principtegning af toppen af en stempelbaseret kølekompressor, med en indbygget ventil i henhold til opfindelsen, hvor 4 DK 177097 B1 sugeventilen er åben.The invention will now be explained in more detail with reference to the drawings in which: FIG. Figure 1 shows a sectional view of the top of a piston-based refrigeration compressor, with a built-in valve according to the invention, where the suction valve is open.
Fig. 2 viser et snit af en principtegning af toppen af en stempelbaseret kølekompressor, med en indbygget ventil i henhold til opfindelsen, hvor 5 både sugeventilen og trykventilen er lukkede og hvor den indbyggede ventil er på vej op.FIG. Figure 2 shows a sectional view of the top of a piston-based refrigeration compressor, with a built-in valve according to the invention, where both the suction valve and the pressure valve are closed and where the built-in valve is on its way up.
Fig. 3 viser et snit af en principtegning af toppen af en stempelbaseret kølekompressor, med en indbygget ventil i henhold til opfindelsen, hvor 10 både sugeventilen og trykventilen er lukkede og hvor den indbyggede ventil er på vej op, og hvor den indre ventil er åbnet.FIG. 3 is a sectional view of the top of a piston-based cooling compressor, with a built-in valve according to the invention, where both the suction valve and the pressure valve are closed and where the built-in valve is on its way up and where the internal valve is opened.
Fig. 4 viser et snit af en principtegning af toppen af en stempelbaseret kølekompressor, med en indbygget ventil i henhold til opfindelsen, hvor 15 trykventilen er åben.FIG. 4 is a sectional view of a principle drawing of the top of a piston-based cooling compressor, with a built-in valve according to the invention, where the pressure valve is open.
På fig. 1 er vist et snitbillede af toppen af en kølekompressor med et stempel 1 som er på vej ned som angivet ved pilen 19.In FIG. 1 is a sectional view of the top of a cooling compressor with a plunger 1 heading down as indicated by arrow 19.
20 Stemplet 1 glider i en cylinder med en væg 20, hvor det over stemplet er et volumen 4.The piston 1 slides into a cylinder with a wall 20, where it is above the piston a volume 4.
Kompressoren er forsynet med en sugeport 3, hvorfra kølemiddel fra køle/fryse anlægget suges ind i kompressoren.The compressor is provided with a suction port 3, from which refrigerant from the cooling / freezing system is sucked into the compressor.
2525
Sugeporten 3 er normalt forbundet til udgangen af køle/fryse anlæggets fordamper.The suction port 3 is usually connected to the outlet of the cooling / freezing system evaporator.
Ved anvendelse af kølemidlet benævnt R 404 A, vil trykket Po i 30 fordamperen ved - 35° C være 0,6 bar, hvilket således også vil være trykket i sugeporten 3.Using the refrigerant referred to as R 404 A, the pressure Po in the vaporizer at -35 ° C will be 0.6 bar, which will thus also be the pressure in the suction port 3.
DK 177097 B1 5DK 177097 B1 5
Mellem sugeporten 3 og stemplet 1 er der monteret en trykstyret sugeventil 2, som altså kun vil åbne, når trykket i volumen 4 over stemplet 1 er lavere end Po.Between the suction port 3 and the piston 1 is mounted a pressure controlled suction valve 2, which will only open when the pressure in volume 4 above the piston 1 is lower than Po.
55
Kompressoren er desuden forsynet med en trykport 12, hvorfra kølemiddel fra køle/fryse anlægget presses ud fra kompressoren.The compressor is furthermore provided with a pressure port 12, from which refrigerant from the cooling / freezing system is pressed out from the compressor.
Trykporten 12 er normalt forbundet til indgangen af køle/fryse anlæggets 10 kondensator eller gaskøler.The pressure port 12 is usually connected to the input of the condenser or gas cooler of the condenser 10.
Ved anvendelse af kølemidlet benævnt R 404 A, vil trykket Pc i kondensatoren ved + 40°C være 17 bar, hvilket således også vil være trykket i trykporten 12.Using the refrigerant referred to as R 404 A, the pressure Pc in the capacitor at + 40 ° C will be 17 bar, which will thus also be the pressure in the pressure port 12.
1515
Mellem trykporten 12 og stemplet 1 er der monteret en trykstyret trykventil 11, som altså kun vil åbne, når trykket i volumen 4 over stemplet 1 er større end Pc.Between the pressure port 12 and the piston 1 is mounted a pressure controlled pressure valve 11, which will thus only open when the pressure in volume 4 above the piston 1 is greater than Pc.
20 I fig. 1 ses endvidere at der i sugeporten 3 er monteret en ventil (5,8,10,13,16,17).In FIG. 1 it is further seen that a valve (5,8,10,13,16,17) is mounted in the suction port 3.
Ventilen (5,8,10,13,16,17) omfatter et delvist cylindrisk glidelegeme 17, der glider i en foring 16, som er placeret mellem topstykket 21 og en ventiltop 25 22, hvor der mellem ventiltoppen 22 og glidelegemet 17 er monteret en fjeder 10, som presser glidelegemet 17 ned mod et hul 18 i topstykket 21, og hvor der i glidelegemet 17 er placeret en indvendig ventil 8, og hvor foringen 16 penetreres af et indløbsrør 13 placeret nær topstykket 21 samt et udløbsrør 5 placeret nær ventiltoppen 22.The valve (5,8,10,13,16,17) comprises a partially cylindrical sliding member 17 which slides into a liner 16 which is located between the top piece 21 and a valve top 25 22, where between the valve top 22 and the sliding body 17 is mounted. a spring 10 which pushes the slider 17 downwardly against a hole 18 in the head 21 and wherein a slider 17 has an internal valve 8 and the liner 16 is penetrated by an inlet tube 13 located near the head 21 and an outlet tube 5 located near the valve top. 22nd
30 6 DK 177097 B1 I en foretrukket udførelsesform er glidelegemet 17 i retning mod topstykket 21 udformet konisk og formkomplementær til et konisk udformet hul 18 i topstykket 21, som glidelegemet 17 interagerer med.In a preferred embodiment, the sliding body 17 in the direction towards the head piece 21 is conically shaped and complementary to a tapered hole 18 in the head piece 21 with which the sliding body 17 interacts.
5 Fra fig. 1 ses endvidere at den indre ventil 8, som er placeret i glidelegemet 17, er længere end glidelegemet 17 i glidelegemets 17 bevægelsesretning.5 From FIG. 1, it is further seen that the inner valve 8 located in the slide body 17 is longer than the slide body 17 in the direction of movement of the slide body 17.
Desuden ses, at indløbsrøret 13 er forsynet med en kontraventil 7, med en flowretning angivet ved pilen 14.In addition, it is seen that the inlet pipe 13 is provided with a check valve 7, with a flow direction indicated by the arrow 14.
1010
Det fremgår endvidere af fig. 1 at udløbsrøret 5 har udløb i topstykket 21 styret af kompressorens sugeventil 2.It is furthermore apparent from FIG. 1 that the outlet pipe 5 has an outlet in the cylinder head 21 controlled by the suction valve 2 of the compressor.
I en foretrukket udførelsesform er indløbsrøret 13 forbundet til eksempelvis 15 en væskeunderkøler eller en trykfaldsventil placeret mellem kondensator eller gaskøler og fordamperen.In a preferred embodiment, the inlet pipe 13 is connected, for example, to a liquid subcooler or a pressure drop valve located between the condenser or gas cooler and the evaporator.
Herved kan kølemiddel ved et tryk Pe tilføres ventilen (5,8,10,13,16,17).Hereby refrigerant at a pressure Pe can be supplied to the valve (5,8,10,13,16,17).
20 Med en sådan systemopkobling fås følgende funktionalitet af køleanlægget ved den indbyggede ventil (5,8,10,13,16,17) forklaret udfra tegningerne 1 til 4.20 With such a system connection, the following functionality of the cooling system by the built-in valve (5,8,10,13,16,17) is explained from the drawings 1 to 4.
I fig. 1 er stempelet 1 på vej ned og sugeventilen 2 åbner.In FIG. 1, the piston 1 is on its way down and the suction valve 2 opens.
25 Kølemiddels dampene strømmer gennem indsugningsporten 3, ind i cylinderens volumen 4 ved fordampnings trykket Po.The coolant vapors flow through the suction port 3, into the volume 4 of the cylinder at the evaporation pressure Po.
Når sugeventilen 2 åbner, åbnes der samtidig for udligningsrøret 5 til 30 toppen af ventilen (5,8,10,13,16,17).When the suction valve 2 opens, at the same time, the compensating tube 5 to 30 opens the top of the valve (5,8,10,13,16,17).
DK 177097 B1 7DK 177097 B1 7
Stemplet 1 fortsætter nedad indtil det når punktet i bunden, hvor det vender.The piston 1 continues downward until it reaches the point at the bottom where it faces.
I fig. 2 bevæger stemplet 1 sig opad, sugeventilen 2 er lukket, og 5 udligningsrøret 5 er afspærret.In FIG. 2, the piston 1 moves upward, the suction valve 2 is closed, and 5 the compensating tube 5 is blocked.
Trykket i cylinderens volumen 4 stiger, og ventilen (5,8,10,13,16,17) bevæger sig op.The pressure in the volume 4 of the cylinder rises and the valve (5,8,10,13,16,17) moves up.
10 Herved åbnes for indløbsrøret 13 til ventilen (5,8,10,13,16,17) og gas fra mellemkøler-underkøler-Flasch gas eller lignende strømmer ind i volumen 4 gennem kontraventilen 7, ved trykket Pe.Hereby the inlet pipe 13 of the valve (5,8,10,13,16,17) is opened and gas from the intercooler-subcooler-bottle gas or the like flows into volume 4 through the check valve 7, at the pressure Pe.
15 I fig. 3 bevæger stemplet 1 sig opad og trykket i volumen 4 stiger til et tryk der er højre end trykket Pe og kontraventilen 7 lukker.In FIG. 3, the piston 1 moves upward and the pressure in volume 4 rises to a pressure that is higher than the pressure Pe and the check valve 7 closes.
Ventilen (5,8,10,13,16,17) bevæger sig yderligere op p.g.a trykstigning i volumen 4, og toppen af den indvendige ventil 8 rammer ventilhuset 22 og 20 åbner.The valve (5,8,10,13,16,17) moves further up due to pressure increase in volume 4, and the top of the inner valve 8 strikes the valve housing 22 and 20 open.
Den indvendige ventils 8 åbning kan i en foretrukket udførelsesform justeres med en påmonteret udvendig juster skrue.In the preferred embodiment, the opening of the inner valve 8 can be adjusted by means of an external adjusting screw fitted.
25 Trykket i volumen 4 over stemplet 1 og toppen af ventilen (5,8,10,13,16,17) udlignes gennem passagen gennem den nu åbne indvendige ventil ( 8 ).The pressure in volume 4 above the piston 1 and the top of the valve (5,8,10,13,16,17) is offset through the passage through the now open internal valve (8).
Ventilen (5,8,10,13,16,17) lukker ved hjælp af det udlignede tryk og topfjederen 10.The valve (5,8,10,13,16,17) closes by means of the equalized pressure and the top spring 10.
30 DK 177097 B1 8 I fig. 4 bevæger stemplet sig op og trykket i volumen 4 stiger til kondenseringstrykket Pc.30 DK 177097 B1 8 In fig. 4, the piston moves up and the pressure in volume 4 rises to the condensing pressure Pc.
Trykventilen 11 åbner og gassen forlader cylinderen gennem trykventilen 5 11 og trykporten 12.The pressure valve 11 opens and the gas leaves the cylinder through the pressure valve 5 11 and the pressure port 12.
Stemplet 1 når toppunktet, hvor det vender, og processen gentager sig.Piston 1 reaches the apex where it turns and the process repeats.
Med opfindelse forøges den del af stempelslaglængden, hvor kølemiddel 10 drives af stempelkompressoren, med det overraskende resultat, at virkningsgraden og dermed energieffektiviteten af kølekompressoren forbedres med op til 15 %.With the invention, the part of the piston stroke length at which refrigerant 10 is driven by the piston compressor is increased, with the surprising result that the efficiency and thus the energy efficiency of the cooling compressor is improved by up to 15%.
15 20 25 3015 20 25 30
Claims (7)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA201000410A DK177097B1 (en) | 2010-05-10 | 2010-05-10 | Valve for refrigeration compressor and use |
| PCT/DK2011/000042 WO2011141025A1 (en) | 2010-05-10 | 2011-05-05 | Valve for refrigeration compressor and application hereof |
| EP11780230.6A EP2569539B1 (en) | 2010-05-10 | 2011-05-05 | Valve for refrigeration compressor and application hereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA201000410A DK177097B1 (en) | 2010-05-10 | 2010-05-10 | Valve for refrigeration compressor and use |
| DK201000410 | 2010-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DK177097B1 true DK177097B1 (en) | 2011-08-22 |
Family
ID=44474938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DKPA201000410A DK177097B1 (en) | 2010-05-10 | 2010-05-10 | Valve for refrigeration compressor and use |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2569539B1 (en) |
| DK (1) | DK177097B1 (en) |
| WO (1) | WO2011141025A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3865345A (en) * | 1973-06-04 | 1975-02-11 | Carrier Corp | Valve plate for reciprocating compressor |
| US4685489A (en) * | 1984-04-13 | 1987-08-11 | Copeland Corporation | Valve assembly and compressor modulation apparatus |
| US4723896A (en) * | 1987-04-30 | 1988-02-09 | White Consolidated Industries, Inc. | Compressor discharge valve assembly |
| JPH01262388A (en) * | 1988-04-14 | 1989-10-19 | Mitsubishi Heavy Ind Ltd | Capacity controller for gas compressor |
-
2010
- 2010-05-10 DK DKPA201000410A patent/DK177097B1/en active
-
2011
- 2011-05-05 WO PCT/DK2011/000042 patent/WO2011141025A1/en active Application Filing
- 2011-05-05 EP EP11780230.6A patent/EP2569539B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP2569539B1 (en) | 2019-03-20 |
| EP2569539A1 (en) | 2013-03-20 |
| EP2569539A4 (en) | 2018-01-10 |
| WO2011141025A1 (en) | 2011-11-17 |
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