CN1888747A - Oil recovering structure for air conditioner - Google Patents
Oil recovering structure for air conditioner Download PDFInfo
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- CN1888747A CN1888747A CN 200510014213 CN200510014213A CN1888747A CN 1888747 A CN1888747 A CN 1888747A CN 200510014213 CN200510014213 CN 200510014213 CN 200510014213 A CN200510014213 A CN 200510014213A CN 1888747 A CN1888747 A CN 1888747A
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- oil
- compressor
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- changeable compressor
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Abstract
This invention discloses a kind of oil recovery structure of air conditioner. It includes: constant speed compressor which compresses some quantity of refrigerants; frequency converting compressor which can change refrigerants compressing capacity; liquid storage which provides refrigerants to each compressor; four-way valve which provides outputted refrigerants to constant speed compressor and frequency converting compressor; oil separating device which provides the separated oil to the inputting side of frequency converting compressor in certain phase. The oil is separated from the refrigerants passing through four-way valve. The oil recovery structure of this invention controls flowing of oil by magnetic valve periodicity. It reduces losses of refrigerants supplied to four-way valve.
Description
Technical field
The present invention relates to a kind of oil recovering structure, especially be provided with the magnetic valve of adjusting the oil mass that reclaims, make the oil recovering structure of the air-conditioner of the certain oil mass of frequency-changeable compressor inner sustain.
Background technology
Recently, the use that utilizes an off-premises station to drive the air-conditioner of several off-premises stations is increasing gradually.Therefore, when off-premises station compresses a spot of cold-producing medium, in several compressors, just start the compressor of low capacity, and when compressing a large amount of cold-producing mediums, start jumbo compressor or start whole compressors.
As shown in Figure 5, existing air-conditioner comprises that indoor set and off-premises station constitute, and utilizes coolant piping to connect indoor set and off-premises station.
In detail, comprising: indoor set is provided with indoor heat converter 1, and off-premises station is provided with outdoor heat converter 2; The several compressors 3,4 of compressed refrigerant; Cold-producing medium after the compression is optionally offered the cross valve 5 of indoor heat converter 1 or outdoor heat converter 2; Be connected on each compressor 3,4, only provide the reservoir 6,7 of gaseous refrigerant; Recovered oil from the cold-producing medium of compressor 3,4 outputs is supplied to the oil separating device 9 of each compressor 3,4 with it; Connect the oil equalizing pipe 8 of each compressor 3,4 etc.
Cross valve 5 is when utilizing air-conditioner to freeze, and the cold-producing medium that compressor 3,4 is exported outputs to the outdoor heat converter side, constitute kind of refrigeration cycle, and when the warm running of air-conditioner system, with compressor 3, the cold-producing medium of 4 outputs is delivered to indoor heat converter 1 side, constitutes the warm circulation of system.Cold-producing medium by cross valve 5 outputs causes phase transformation, and in each refrigerant piping internal flow, the warm running of the refrigeration/system of operating air conditioner.
Oil separating device 9 separates fuel-displaced from the cold-producing medium of compressor 3,4 outputs, and oil is delivered to the input side of compressor 3,4, and capillary 10 is set between oil separating device 9 and compressor.
But existing air-conditioner focuses on the compressor of a certain side in order to prevent oil, and reservoir 6,7, oil separating device 9, capillary 10 and oil equalizing pipe 8 need be set, and therefore needs the more space that is provided with, and makes manufacturing time longer.
Summary of the invention
Technical problem to be solved by this invention is, a kind of simple structure that possesses is provided, and saves the space is set, and shortens the oil recovering structure of the air-conditioner of manufacturing time.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of oil recovering structure of air-conditioner comprises: the constant speed compressor that compresses a certain amount of cold-producing medium; Can change the frequency-changeable compressor of refrigerant compression capacity; The reservoir of cold-producing medium is provided for each compressor; The cross valve of the cold-producing medium of output is provided for constant speed compressor and frequency-changeable compressor; Be arranged between cross valve and the frequency-changeable compressor, will by separate in the cold-producing medium of cross valve fuel-displaced after, the oil after will separating with certain cycle is delivered to the oil separating device of the input side of frequency-changeable compressor.
Frequency-changeable compressor is connected by tube connector and receives cold-producing medium on the reservoir, and oil separating device is connected on some tube connectors.
Frequency-changeable compressor is connected by tube connector and receives cold-producing medium on the reservoir, and oil separating device is connected on each tube connector.
Oil separating device comprises the magnetic valve with some cycles control flow of refrigerant.
Oil separating device comprises the oil eliminator that is arranged between check-valves and the frequency-changeable compressor; Be arranged between oil eliminator and the frequency-changeable compressor, make circuitous capillary and the magnetic valve of oil that separates on the oil eliminator.
Capillary is connected with magnetic valve, and magnetic valve is arranged on the input side of frequency-changeable compressor, and capillary is arranged on the oil eliminator side.
The invention has the beneficial effects as follows: only be provided with oil separating device, and the magnetic valve that oil mass is reclaimed in control is set, can make the certain oil mass of frequency-changeable compressor inner sustain in the frequency-changeable compressor side; Only be provided with oil separating device on the frequency-changeable compressor in several compressor reducers, can dwindle that the space being set; Removed the oil equalizing pipe of existing connection compressor, therefore easy to assembly.So oil recovering structure provided by the invention utilizes magnetic valve periodically to control flowing of oil, has reduced the loss that is provided to the cold-producing medium on the cross valve.
Description of drawings
Fig. 1 is the stereogram of the air-conditioner of the present invention the 1st embodiment,
Fig. 2 is the off-premises station composition diagram of the present invention the 1st embodiment,
Fig. 3 is the composition diagram of the off-premises station of the present invention the 2nd embodiment
Fig. 4 is the composition diagram of the off-premises station of the present invention the 3rd embodiment,
Fig. 5 is the composition diagram of the air-conditioner of prior art.
Among the figure:
20: indoor set 21: indoor heat converter
30: off-premises station
32: constant speed compressor 32a: tube connector
33: check-valves 34: frequency-changeable compressor
34a, 34b, 34c, 34d, 34e: tube connector
35: check-valves 36: cross valve
38: reservoir 42,52: oil eliminator
44,54: capillary 46,56: magnetic valve
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
As depicted in figs. 1 and 2, the air-conditioner of the 1st embodiment of the present invention comprises indoor set 20 and off-premises station 30, and utilizes coolant piping 25 to connect indoor set 20 and off-premises station 30.
Off-premises station 30 comprises: make outdoor air and cold-producing medium carry out the outdoor heat converter 31 of heat exchange; The constant speed compressor 32 of compressed refrigerant and frequency-changeable compressor 34; The cross valve 36 of the cold-producing medium of compressor 32,34 outputs is provided; The reservoir 38 of the cold-producing medium of gaseous state is provided for compressor 32,34; Be arranged between cross valve 36 and the frequency-changeable compressor 34, constituting by separating fuel-displaced oil separating device in the cold-producing medium of cross valve,
Warm up running in order to make air-conditioner freeze/make, cross valve 36 switches the flow direction of cold-producing mediums, and the cold-producing medium that compressor is exported outputs on outdoor heat converter 31 or the indoor heat converter 21.
After reservoir 38 receives the cold-producing medium of cross valve 36 outputs, the cold-producing medium of gaseous state is provided only for compressor 32,34.
Constant speed compressor 32 is compression and the compressor of exporting a certain amount of cold-producing medium, and frequency-changeable compressor 34 is compressors of adjusting cold-producing medium decrement and output in certain scope.
Particularly compressor 32,34 can start wherein a certain compressor or all startups under the control of control part.And when just starting wherein a certain compressor, flow in another compressor in order to prevent cold-producing medium, on the outlet side coolant piping of compressor 32,34, be provided with check-valves 33,35 respectively.
Reservoir 38 and compressor 32,34 are by tube connector 32a, and 34a connects, and in the 1st embodiment, tube connector 32a, 34a have connected one respectively.
Oil separating device comprises: be arranged on the oil eliminator 42 between check-valves 35 and the frequency-changeable compressor 34; Be arranged between oil eliminator 42 and the frequency-changeable compressor 34, circuitous capillary 44 and the magnetic valve 46 of oil that separates on the oil eliminator 42 constituted.
Here, capillary 44 is arranged on the oil eliminator side, and magnetic valve 46 is arranged on the input side of frequency-changeable compressor 34.
Magnetic valve 46 cycle with regulation under the control of the control part of air-conditioner opens and closes, and the oil that oil eliminator 42 is separated flows into the input side of frequency-changeable compressor 34.
Below, describe air-conditioner oil removal process among the present invention the 1st embodiment in detail in conjunction with Fig. 1 or Fig. 2:
At first, under the control of control part, when having only constant speed compressor to start, gaseous refrigerant is fed to the constant speed compressor 32 from reservoir 38, and constant speed compressor compressed gaseous cold-producing medium, to cross valve 36 outputs, and by the check-valves 35 that is arranged on frequency-changeable compressor 34 sides, the cold-producing medium after the compression can adverse current not arrive in the frequency-changeable compressor 34.
Control part carries out cooling operation and the warm running of system in order to make air-conditioner, and control cross valve 36 outputs to cold-producing medium in indoor heat converter 31 or the outdoor heat converter 21.
When having only the constant speed compressor running, because the compression volume of constant speed compressor 32 less than frequency-changeable compressor 34, therefore the phenomenon of shortage of oil can not take place.
When having only frequency-changeable compressor 34 to start, frequency-changeable compressor 34 to oil eliminator output cold-producing medium, and stores behind the oil that oil eliminator 42 separates in the cold-producing mediums after compressing from reservoir 38 reception cold-producing mediums.
Here, the oil that separates by oil eliminator 42 is fed to the input side of frequency-changeable compressor through capillary 44 and magnetic valve 46.And control part control this moment magnetic valve 46 makes it open and close with certain cycle, makes frequency-changeable compressor 34 keep certain oil mass.
Simultaneously, magnetic valve 46 is not only just done simple on-off action, can make magnetic valve open very little gap as required, makes a spot of oil flow.
When constant speed compressor 32 and frequency-changeable compressor 34 turn round simultaneously, the cold-producing medium of constant speed compressor 32 and frequency-changeable compressor 34 outputs is provided in the cross valve 36, the drive manner of the oil separating device of this moment when only starting frequency-changeable compressor is identical, makes the certain oil mass of frequency-changeable compressor 34 inner sustain.
As shown in Figure 3, the 2nd embodiment and the 1st embodiment are similar, and different is to be provided with 2 tube connector 34b, 34c between reservoir 38 and frequency-changeable compressor 34, be connected each tube connector 34b and between oil eliminator 42 and frequency-changeable compressor 34, be provided with, the oil separating device on the 34c.
On oil eliminator 42, be provided with the circuitous pipeline of a pair of oil that capillary 54 and magnetic valve 56 polyphones connect.
The course of action of the frequency-changeable compressor of the 2nd embodiment is as follows: frequency-changeable compressor compresses relative constant speed compressor 32 more jumbo cold-producing medium, by 2 tube connector 34b, 34c receives cold-producing medium and by being connected each tube connector 34b, the oil separating device of 34c makes the certain oil mass of frequency-changeable compressor 34 inner sustain.
Here, a pair of oil separating device is arranged on each tube connector 34b, on the 34c, can control the oil mass that is fed on the frequency-changeable compressor 34 more effectively.
As shown in Figure 4, the present invention the 3rd embodiment and the 2nd embodiment are similar, and difference is be connected in 2 tube connector 34d of reservoir 38, among the 34e, has only on the tube connector to be provided with oil separating device.
The frequency-changeable compressor 34 that is provided with among the 3rd embodiment just is provided with oil separating device on a tube connector 34d, when guaranteeing the refrigerant amount that reservoir 38 provides, utilize oil separating device to make the certain oil mass of frequency-changeable compressor 34 inner sustain.
Claims (6)
1, a kind of oil recovering structure of air-conditioner comprises: the constant speed compressor (32) that compresses a certain amount of cold-producing medium; Can change the frequency-changeable compressor (34) of refrigerant compression capacity; The reservoir (38) of cold-producing medium is provided for each compressor; The cross valve (36) of the cold-producing medium of output is provided for constant speed compressor (32) and frequency-changeable compressor (34); It is characterized in that being arranged between cross valve (36) and the frequency-changeable compressor (34), will by separate in the cold-producing medium of cross valve (36) fuel-displaced after, the oil after will separating with certain cycle is delivered to the oil separating device of the input side of frequency-changeable compressor (34).
2, the oil recovering structure of air-conditioner according to claim 1 is characterized in that frequency-changeable compressor (34) is by tube connector (34a, 34b, 34c, 34d 34e) is connected reservoir (38) and goes up the reception cold-producing medium, and oil separating device is connected on some tube connectors.
3, the oil recovering structure of air-conditioner according to claim 1, it is characterized in that frequency-changeable compressor (34) by tube connector (34a, 34b, 34c, 34d 34e) is connected reservoir (38) and go up receives cold-producing medium, oil separating device is connected on each tube connector.
4,, it is characterized in that oil separating device comprises the magnetic valve (46,56) with some cycles control flow of refrigerant according to the oil recovering structure of claim 1 or 3 described air-conditioners.
5,, it is characterized in that oil separating device comprises the oil eliminator (42,52) that is arranged between check-valves (35) and the frequency-changeable compressor (34) according to the oil recovering structure of claim 1 or 3 described air-conditioners; Be arranged between oil eliminator (42,52) and the frequency-changeable compressor (34), make oil eliminator (42,52) go up the circuitous capillary (44,54) and the magnetic valve (46,56) of oil of separation.
6, the oil recovering structure of air-conditioner according to claim 5, it is characterized in that capillary (44,54) is connected with magnetic valve (46,56), magnetic valve (46,56) is arranged on the input side of frequency-changeable compressor (34), and capillary (44,54) is arranged on oil eliminator (42,52) side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510014213 CN1888747A (en) | 2005-06-30 | 2005-06-30 | Oil recovering structure for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510014213 CN1888747A (en) | 2005-06-30 | 2005-06-30 | Oil recovering structure for air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1888747A true CN1888747A (en) | 2007-01-03 |
Family
ID=37578036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510014213 Pending CN1888747A (en) | 2005-06-30 | 2005-06-30 | Oil recovering structure for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1888747A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749890A (en) * | 2008-12-11 | 2010-06-23 | 株式会社富士通将军股份有限公司 | Refrigeration apparatus and method for controlling the same |
| CN103471298A (en) * | 2013-08-30 | 2013-12-25 | 青岛海信日立空调系统有限公司 | Multi-connected air-conditioner oil control system and oil control method |
| CN103808091A (en) * | 2012-11-12 | 2014-05-21 | Lg电子株式会社 | Oil separator and air conditioner with oil separator |
| CN104236168A (en) * | 2014-07-10 | 2014-12-24 | 广东美的集团芜湖制冷设备有限公司 | Oil return control method and oil return control system for compressor system |
| CN106766366A (en) * | 2016-11-28 | 2017-05-31 | 广东美的暖通设备有限公司 | Frequency conversion air-cooled heat pump water chiller-heater system and its control method and air-conditioning |
-
2005
- 2005-06-30 CN CN 200510014213 patent/CN1888747A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749890A (en) * | 2008-12-11 | 2010-06-23 | 株式会社富士通将军股份有限公司 | Refrigeration apparatus and method for controlling the same |
| CN101749890B (en) * | 2008-12-11 | 2014-02-26 | 株式会社富士通将军股份有限公司 | Refrigeration apparatus and method for controlling the same |
| CN103808091A (en) * | 2012-11-12 | 2014-05-21 | Lg电子株式会社 | Oil separator and air conditioner with oil separator |
| CN103808091B (en) * | 2012-11-12 | 2016-06-08 | Lg电子株式会社 | Oil eliminator and use the air-conditioning of this oil eliminator |
| US9500396B2 (en) | 2012-11-12 | 2016-11-22 | Lg Electronics Inc. | Oil separator and air conditioner using the same |
| CN103471298A (en) * | 2013-08-30 | 2013-12-25 | 青岛海信日立空调系统有限公司 | Multi-connected air-conditioner oil control system and oil control method |
| CN103471298B (en) * | 2013-08-30 | 2015-12-02 | 青岛海信日立空调系统有限公司 | Multi-gang air-conditioner control oil system and control oily method |
| CN104236168A (en) * | 2014-07-10 | 2014-12-24 | 广东美的集团芜湖制冷设备有限公司 | Oil return control method and oil return control system for compressor system |
| CN106766366A (en) * | 2016-11-28 | 2017-05-31 | 广东美的暖通设备有限公司 | Frequency conversion air-cooled heat pump water chiller-heater system and its control method and air-conditioning |
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