CN101627266B - Device for suction gas distribution in a parallel compressor assembly, and parallel compressor assembly - Google Patents
Device for suction gas distribution in a parallel compressor assembly, and parallel compressor assembly Download PDFInfo
- Publication number
- CN101627266B CN101627266B CN2007800504938A CN200780050493A CN101627266B CN 101627266 B CN101627266 B CN 101627266B CN 2007800504938 A CN2007800504938 A CN 2007800504938A CN 200780050493 A CN200780050493 A CN 200780050493A CN 101627266 B CN101627266 B CN 101627266B
- Authority
- CN
- China
- Prior art keywords
- distributing pipe
- distributor
- compressor
- pipe
- assembly
- 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.)
- Expired - Fee Related
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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
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
- F25B41/42—Arrangements for diverging or converging flows, e.g. branch lines or junctions
- F25B41/45—Arrangements for diverging or converging flows, e.g. branch lines or junctions for flow control on the upstream side of the diverging point, e.g. with spiral structure for generating turbulence
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- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
- F25B2400/075—Details of compressors or related parts with parallel compressors
Abstract
The invention relates to a distribution device (5) for suction gas, that comprises a distribution pipe (6) as well as bypass pipes (7) for establishing communication between the distribution pipe and the inner volumes (3) of cooling compressors (2). A device for normalising the suction gas flow is provided in the distribution pipe upstream of the bypass pipes (7).
Description
Technical field
The present invention relates to a kind of device for suction gas distribution for parallel compressor assembly and parallel compressor assembly.
Background technology
In known mode, parallel compressor assembly comprises:
-at least two refrigeration compressors, each comprises the main body that defines internal volume,
-at least one oil level balance pipe, it makes communicating with each other at the food tray housing of forming in each compressor body main body,
-at least one device for suction gas distribution, it comprises substantially straight distributing pipe and the arm that makes distributing pipe be communicated with the internal volume of each compressor main body.
In order to ensure this assembly correctly, running reliably, need the oil level in the housing of each compressor of balance.This balance of oil level is by the pressure that obtains in each compressor housing of balance and advantageously obtained by these housings are communicated with each other.
Pressure in housing is by via the pipe-line system of device for suction gas distribution be able to balance via the balance pipe adjustable pressure drops.Therefore, this adjusting of Pressure Drop is accurately to limit in the laboratory geometry of the pipe-line system of device for suction gas distribution and balance pipe so that the pressure that obtains is able to balance in each compressor housing.
Certainly, oil level must give balance, and no matter the operating condition of assembly how.
The widely various purposes (air-conditioning, heat pump, cryogenic refrigeration) of assembly and the many different character of geometry that is positioned at the pipe-line system of assembly upstream when assembly is attached in complication system mean that the condition (speed, pressure, density) of air-breathing porch entering assembly can alter a great deal.
For example, when assembly was installed in reversible heat pump, when system switched to heating mode from refrigerating mode, gas flow direction was reverse by reversing valve, and vice versa.The change of gas flow direction has changed the VELOCITY DISTRIBUTION of the gas that enters assembly greatly.
Now, because the Pressure Drop of the pipe-line system of device for suction gas distribution and balance pipe closely correlates with the air-breathing VELOCITY DISTRIBUTION that enters assembly, therefore the significant change meeting of suction inlet condition significantly changes the assembly function mode, and makes the pressure that obtains in can not each compressor housing of balance and the therefore oil level in each compressor.
Therefore, can realize in the laboratory the well balanced assembly of oil level in each compressor, when being installed at the scene in equipment, put on the distortion of air-breathing VELOCITY DISTRIBUTION due to the service condition because of the geometrical property of the pipe-line system that is positioned at the assembly upstream or assembly, can cause the marked change of oil level.
Should be pointed out that the remarkable change meeting to oil level causes wearing and tearing and the damage of one or more compressor because oil starvation causes interlock.
This means when assembly is arranged on some equipment, assembly tediously long and expensive check in the laboratory can be damaged potentially.
It should be emphasized that, what enter assembly is air-breathing with the elaioleucite from the transmission gas of compressor.Due to the high flow rate of the gas in the pipe-line system that the compressor dispatch tube is connected to device for suction gas distribution, these elaioleucites enter assembly, more particularly, enter the food tray housing of each compressor.
Consider the special characteristic of the pipe-line system of the device for suction gas distribution of determining in the laboratory, elaioleucite is preferably guided some compressor that is called as oil " recover " compressor into.
As a result, if at the entrance side of assembly and therefore change along with client or application scenario in the VELOCITY DISTRIBUTION at the entrance side place of compressor, reclaiming so compressor will be no longer identical, and the laboratory check of assembly can suffer damage again.
Summary of the invention
Therefore, the present invention is devoted to eliminate these shortcomings.
Therefore, the technical problem that the present invention solves is to provide a kind of device for suction gas distribution, and it makes it possible to obtain the balance of the oil level in each compressor, and no matter the assembly operation condition how.
For this reason, the present invention relates to a kind of device for suction gas distribution for parallel compressor assembly, this parallel compressor assembly comprises at least two refrigeration compressors, each comprises the main body that defines internal volume, this device for suction gas distribution comprises distributing pipe and the arm that distributing pipe is communicated with the internal volume of the main body of compressor, it is characterized in that, be used for making air-breathing mobile standardized modular station in the arm upstream, distributing pipe to be set.
The air-breathing mobile standardization that is used for that air-breathing mobile standardized device is made it possible to and enters assembly.Like this, regardless of the geometry of the pipe-line system that is positioned at the assembly upstream, the air-breathing VELOCITY DISTRIBUTION that enters assembly will be always substantially the same.
As a result, the oil level during correctly the assembly of the oil level in each compressor of balance will can make each compressor equally under laboratory condition is balance correctly at the scene.
Moreover because the VELOCITY DISTRIBUTION of gas that enters assembly is by standardization, device for suction gas distribution according to the present invention makes and can pre-determine which compressor will be as the oil saver compressor under all application scenarios.
Should be pointed out that modular station that is to say the negligible pressure drop of generation in breathing process in standard openating procedure, more remarkable but this pressure drop becomes in liquid flow.
Like this, if liquid lock forms and arrive at modular station in distributing pipe, the pressure drop that produces by modular station always will allow to be vaporized near the liquid of its saturation curve, thereby slow down the suction side that liquid refrigerant arrives compressor.
Therefore, modular station makes can protect each compressor in case liquid arrives the compressor air suction connecting portion singularly, and prevents that potential subsequently machinery or electricity avoided in compressor inside to be damaged.
As a result, the existence of modular station allows Compressor Manufacturing to get more reliable.
Moreover the existence of modular station makes and can reduce cost and the time that check aspect, assembly laboratory is caused.
Particularly, in this case, no longer need to check " right hand " and " left hand " pattern of assembly, because modular station has been eliminated the difference of air-flow aspect between these two kinds of patterns." right hand " of assembly and " left hand " pattern arrive at from right side or the left side of assembly corresponding to gas.
Advantageously, this modular station comprises the device that reduces air-breathing cross-sectional flow area in distributing pipe.
Preferably, reducing device is designed to reduce air-breathing cross-sectional flow area in the mode with respect to the axis centering of distributing pipe
According to the first alternative of the present invention, reduce device and comprise the ring that for example is fixed on distributing pipe inside by welding or crimping, this ring has longitudinal hole.
Preferably, the hole on ring is with respect to the axis centering of distributing pipe.
According to the second alternative of the present invention, reduce device and consisted of by the inside variant part of the wall of distributing pipe.
Advantageously, distribute the variant part of tube wall to comprise the Frusto-conical first of convergent and the Frusto-conical second portion of flaring.
Preferably, the variant part of the wall of distributing pipe comprises the columniform third part between Frusto-conical the first and second parts.
According to another alternative of the present invention, the variant part of the wall of distributing pipe has to projecting inward configuration.
The invention still further relates to a kind of parallel compressor assembly, comprising:
-at least two refrigeration compressors, each comprises the main body that defines internal volume,
-at least one oil level balance pipe communicates with each other the food tray housing that forms in the main body of compressor,
-at least one is according to gas distributing device of the present invention.
Description of drawings
In any case by means of the following explanation that the reference accompanying drawing is done, the present invention will be expressly understood, some embodiment of described distributor have been described in following explanation by limiting examples.
Description of drawings
Fig. 1 is the general view of assembly of compressor of two parallel connections of distributor used according to the invention;
Fig. 2 is the cross sectional view of the amplification of modular station;
Fig. 3 is the cross sectional view of the first alternative form of the embodiment of modular station;
Fig. 4 is the cross sectional view of the second alternative form of the embodiment of modular station.
The specific embodiment
Fig. 1 has described parallel compressor assembly " left hand " pattern, comprising:
-two refrigeration compressors 2, each comprises the main body 3 that defines internal volume,
-oil level balance pipe 4 communicates with each other the food tray housing in the main body 3 interior formation of each compressor 2,
-device for suction gas distribution 5 comprises substantially straight distributing pipe 6 and arm 7, and each arm 7 makes distributing pipe 6 be communicated with the internal volume of the main body of compressor 2.
Should be pointed out that in " right hand " pattern, this assembly will comprise and be similar to distributing pipe 6 ' shown in broken lines in Fig. 1.
Inspiratory flow modular station 11 in arm 7 located upstream in distributing pipe 6.More particularly, modular station 11 is positioned in the straight part 12 of distributing pipe.
The air-breathing arrow that is expressed as series of parallel in Fig. 2 that is flowing in of modular station 11 upstream and downstreams.
As shown in Figure 2, reduce device and for example comprise by welding or crimping and be installed to annulus 14 in distributing pipe, the hole 15 of being defined by this annulus is with respect to the axis centering of the straight part 12 of distributing pipe.Should be pointed out that the external diameter of annulus 14 is corresponding to the internal diameter of straight part 12.
According to the first alternative form of the embodiment of as shown in Figure 3 modular station, reduce device and formed by the inside variant part 16 of the wall of distributing pipe 6.The variant part of the wall of distributing pipe has to projecting inward configuration.
The second alternative form according to the embodiment of as shown in Figure 4 modular station, the variant part of the wall of distributing pipe comprises the conical butt first 17 of convergent, conical butt second portion 18 and the cylindrical third part 19 of flaring, and the diameter of this cylindrical third part 19 is less than the initial diameter of distributing pipe and between Frusto-conical the first and second parts.
Much less, the present invention is not limited in above the embodiment of this distributor of describing by example, but comprises on the contrary the variant of all embodiment.Like this, especially, in the situation that do not deviate from scope of the present invention, the quantity of compressor can be different.Similarly, the axis of distributing pipe can be departed from order to make the air-flow in pipe bend straighten in the center in the hole on annulus 14.
Claims (11)
1. device for suction gas distribution (5) that is used for parallel compressor assembly (2), described parallel compressor assembly (2) comprises at least two refrigeration compressors, each refrigeration compressor comprises the main body (3) that defines internal volume, the arm (7) that this device for suction gas distribution comprises distributing pipe (6) and this distributing pipe (6) is communicated with the internal volume of the main body of described compressor (2), it is characterized in that, be used for making air-breathing mobile standardized modular station (11) in described arm (7) upstream and be arranged on the straight part (12) of described distributing pipe (6) adjacent to described arm (7).
2. distributor as claimed in claim 1, is characterized in that, described modular station (11) comprises the device that reduces described air-breathing cross-sectional flow area in described distributing pipe.
3. distributor as claimed in claim 2, is characterized in that, the described device that reduces is designed to reduce described air-breathing cross-sectional flow area in the mode with respect to the axis centering of described distributing pipe.
4. distributor as claimed in claim 2 or claim 3, is characterized in that, the described device that reduces comprises the ring (14) that is fixed on described distributing pipe inside, and this ring has longitudinal hole (15).
5. distributor as claimed in claim 4, is characterized in that, described ring (14) is that to be fixed on described distributing pipe by welding or crimping inner.
6. distributor as claimed in claim 4, is characterized in that, the hole (15) on described ring (14) is with respect to the axis centering of described distributing pipe.
7. distributor as claimed in claim 2 or claim 3, is characterized in that, the described device that reduces is made of the inside variant part (16) of the wall of described distributing pipe.
8. distributor as claimed in claim 7, is characterized in that, the variant part of the wall of described distributing pipe comprises the conical butt first (17) of convergent and the conical butt second portion (18) of flaring.
9. distributor as claimed in claim 8, is characterized in that, the variant part of the wall of described distributing pipe comprises the columniform third part (19) between described conical butt the first and second parts.
10. distributor as claimed in claim 7, is characterized in that, the variant part of the wall of described distributing pipe has to projecting inward configuration.
11. a parallel compressor assembly comprises:
At least two refrigeration compressors (2), each refrigeration compressor comprise the main body (3) that defines internal volume,
At least one oil level balance pipe (4), this oil level balance pipe communicate with each other the food tray housing that forms in the main body of described each compressor,
At least one gas distributing device as described in one of claim 1-9 (5).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0610569 | 2006-12-04 | ||
| FR0610569A FR2909421B1 (en) | 2006-12-04 | 2006-12-04 | SUCTION GAS DISTRIBUTION DEVICE FOR MOUNTING COMPRESSORS IN PARALLEL, AND MOUNTING COMPRESSORS IN PARALLEL |
| PCT/FR2007/001952 WO2008081093A2 (en) | 2006-12-04 | 2007-11-28 | Device for suction gas distribution in a parallel compressor assembly, and parallel compressor assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101627266A CN101627266A (en) | 2010-01-13 |
| CN101627266B true CN101627266B (en) | 2013-06-05 |
Family
ID=38197618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800504938A Expired - Fee Related CN101627266B (en) | 2006-12-04 | 2007-11-28 | Device for suction gas distribution in a parallel compressor assembly, and parallel compressor assembly |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101627266B (en) |
| FR (1) | FR2909421B1 (en) |
| WO (1) | WO2008081093A2 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2437006A1 (en) * | 2009-05-29 | 2012-04-04 | Panasonic Corporation | Refrigeration cycle device |
| FR2966569B1 (en) * | 2010-10-26 | 2012-10-26 | Danfoss Commercial Compressors | REFRIGERATION SYSTEM |
| US10634137B2 (en) * | 2012-07-31 | 2020-04-28 | Bitzer Kuehlmaschinenbau Gmbh | Suction header arrangement for oil management in multiple-compressor systems |
| US9689386B2 (en) | 2012-07-31 | 2017-06-27 | Bitzer Kuehlmaschinenbau Gmbh | Method of active oil management for multiple scroll compressors |
| US10495089B2 (en) | 2012-07-31 | 2019-12-03 | Bitzer Kuehlmashinenbau GmbH | Oil equalization configuration for multiple compressor systems containing three or more compressors |
| US9051934B2 (en) | 2013-02-28 | 2015-06-09 | Bitzer Kuehlmaschinenbau Gmbh | Apparatus and method for oil equalization in multiple-compressor systems |
| CN105466082B (en) * | 2014-08-21 | 2019-09-20 | 浙江盾安机电科技有限公司 | A kind of parallel connection compressor oil balancing unit |
| US9939179B2 (en) | 2015-12-08 | 2018-04-10 | Bitzer Kuehlmaschinenbau Gmbh | Cascading oil distribution system |
| US10760831B2 (en) | 2016-01-22 | 2020-09-01 | Bitzer Kuehlmaschinenbau Gmbh | Oil distribution in multiple-compressor systems utilizing variable speed |
| CN107503918A (en) * | 2017-09-19 | 2017-12-22 | 广东志高暖通设备股份有限公司 | A kind of parallel connection compressor and air-conditioning system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3360958A (en) * | 1966-01-21 | 1968-01-02 | Trane Co | Multiple compressor lubrication apparatus |
| EP1120611A1 (en) * | 1999-07-21 | 2001-08-01 | Daikin Industries, Ltd. | Refrigerating device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0829018A (en) * | 1994-07-14 | 1996-02-02 | Hitachi Ltd | Refrigerant flow divider |
| JP3376534B2 (en) * | 1994-08-18 | 2003-02-10 | 株式会社日立製作所 | Refrigerant distributor |
| US6983622B2 (en) * | 2004-04-20 | 2006-01-10 | Danfoss Commercial Compressors | Gas distribution device |
-
2006
- 2006-12-04 FR FR0610569A patent/FR2909421B1/en not_active Expired - Fee Related
-
2007
- 2007-11-28 CN CN2007800504938A patent/CN101627266B/en not_active Expired - Fee Related
- 2007-11-28 WO PCT/FR2007/001952 patent/WO2008081093A2/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3360958A (en) * | 1966-01-21 | 1968-01-02 | Trane Co | Multiple compressor lubrication apparatus |
| EP1120611A1 (en) * | 1999-07-21 | 2001-08-01 | Daikin Industries, Ltd. | Refrigerating device |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2909421B1 (en) | 2009-01-16 |
| WO2008081093A3 (en) | 2008-10-02 |
| WO2008081093A2 (en) | 2008-07-10 |
| FR2909421A1 (en) | 2008-06-06 |
| CN101627266A (en) | 2010-01-13 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20131128 |