CN101178272A - Air conditioner oil returning system - Google Patents
Air conditioner oil returning system Download PDFInfo
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- CN101178272A CN101178272A CNA2006101384019A CN200610138401A CN101178272A CN 101178272 A CN101178272 A CN 101178272A CN A2006101384019 A CNA2006101384019 A CN A2006101384019A CN 200610138401 A CN200610138401 A CN 200610138401A CN 101178272 A CN101178272 A CN 101178272A
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- compressor
- oil eliminator
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- 238000005057 refrigeration Methods 0.000 claims description 46
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 abstract 1
- 239000000110 cooling liquid Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 138
- 239000007789 gas Substances 0.000 description 24
- 239000007788 liquid Substances 0.000 description 21
- 239000003507 refrigerant Substances 0.000 description 20
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000009699 differential effect Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 238000010338 mechanical breakdown Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Compressor (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention discloses an oil-return system used for an air conditioner, comprising a compressor, a four-way valve, a condenser, an expansion valve, an evaporator, an air-side check valve, as well as an oil separator, a solenoid valve and an oil-return capillary. The oil separator is connected with the four-way valve and the evaporator. The solenoid valve is connected with the oil separator and the condenser. The oil-return capillary is connected with the oil separator and the compressor. When the air conditioner works, the invention can effectively separate the oil from cooling mediums to enhance the working efficiency of the air conditioner, which can further eliminate noises and avoid the happening of cooling liquid returning.
Description
Technical field
The present invention relates to the air-conditioner field, particularly relate to a kind of air conditioner oil returning system.
Background technology
Air-conditioner is one of our the most frequently used household electrical appliances, and air-conditioner utilizes the compressor compresses refrigerant, realizes refrigeration, heat-production functions by refrigerant heat absorption, heat release.Compressor needs lubricating oil that its parts are lubricated in the compression refrigerant process, prevents mechanical breakdown, improves the service life of compressor.If but lubricating oil and refrigerant mix and enter evaporimeter and freeze, heat circulation, will influence refrigeration, the heating effect of air-conditioner, therefore, must lubricating oil be separated from refrigerant by oil return system, send compressor again back to, with recycling.
Consult Fig. 1,, comprise compressor 11, oil separating device 12, cross valve 13, condenser 14 and evaporimeter 16 for existing air conditioner oil returning system schematic diagram.Wherein, oil separating device 12 is arranged on the discharge duct of compressor 11.During work, compressor 11 sucks oil and cold media gas, with the admixture of gas of its boil down to HTHP, separates through oil separating device 12, and oil separating device 12 separates oil with refrigerant, and the oil after the separation returns compressor 11 through capillary.
But oil separating device 12 is difficult to effectively oil be separated with refrigerant.When compressor 11 work, the gas that compressor 11 is discharged is because of the pressure height, and flow velocity is very fast.The admixture of gas that flows is by oil separating device 12 fast, part oil is not when also separating with gas coolant, just taken out of oil separating device 12, directly or indirectly enter evaporimeter 16, influence the heating of air-conditioner, refrigeration by the cold media gas that flows fast.
In air-conditioner, oil separating device 12 also plays sound deadening simultaneously, but the noise that produces can only eliminate compressor 11 exhausts the time.Air-conditioner when heating, evaporimeter 16 heat releases in the direct inlet chamber of the cold media gas of HTHP, gases at high pressure are through gas side stop valve 17 time, flow velocity is very fast, is easy to generate noise in throttling step-down process, influences work, the life of indoor occupant.
Oil separating device 12 can not prevent effectively that non-return liquid phenomenon takes place.Air-conditioning is when heating, and outdoor temperature is often lower, and the refrigerant damp steam absorbs heat difficult in condenser 14, and refrigerant evaporation is less, and compressor 11 pressures of inspiration(Pi) are lower, and liquid refrigerant enters compressor 11 easily, causes compressor 11 to damage.
Therefore, existing oil separating device 12 is difficult to effectively oil be separated with refrigerant when air-conditioner is worked, and influences the work effect of air-conditioner.And when air conditioner heat-production, can not abate the noise effectively, prevent that non-return liquid phenomenon takes place.
Summary of the invention
Technical problem to be solved by this invention provides a kind of air conditioner oil returning system, when air-conditioner is worked, can effectively oil be separated with refrigerant, improves the work effect of air-conditioner, and can abate the noise better, and anti-non-return liquid phenomenon takes place.
A kind of air conditioner oil returning system of the present invention comprises compressor, cross valve, condenser, expansion valve, evaporimeter, gas side stop valve, also comprises: oil eliminator, magnetic valve and oil return capillary; Described oil eliminator connects described cross valve and described evaporimeter; Described magnetic valve connects described oil eliminator and described condenser; Described oil return capillary connects described oil eliminator and described compressor.
Preferably, described oil eliminator is divided into the upper and lower, is separated with separation net between its upper and lower.
Preferably, described magnetic valve is communicated with a termination of end and goes into the top of described oil eliminator, and the other end inserts the pipeline between described condenser and the described expansion valve.
Preferably, described magnetic valve comprises first magnetic valve and second magnetic valve that polyphone connects.
Preferably, described oil return capillary one termination is gone into the bottom of described oil eliminator, and the other end inserts the air intake duct of described compressor.
Preferably, the outlet of the tube connector of described oil eliminator and described cross valve is arranged on top; Described oil eliminator is communicated with described evaporimeter by described gas side stop valve.
Preferably, also comprise: controller of air conditioner, described magnetic valve connects described air-conditioner controller.
Preferably, described controller of air conditioner comprises refrigeration control unit and heats control module; Described refrigeration control unit is used under refrigeration mode, by controlling opening, closing of described magnetic valve and described expansion valve, finishes oil return automatically; The described control module that heats is used under heating mode, by controlling opening, closing of described magnetic valve and expansion valve, finishes oil return automatically.
Preferably, described refrigeration control unit comprises start refrigeration control unit and shutdown refrigeration control unit; Described start refrigeration control unit is used for when receiving the refrigeration starting-up signal, and described magnetic valve is open-minded, starts described compressor behind first preset time; Close described magnetic valve through first Preset Time again; Described shutdown refrigeration control unit is used for closing described expansion valve when receiving the refrigeration off signal, opens described magnetic valve simultaneously, behind second preset time, closes described magnetic valve.
Preferably, the described control module that heats comprises that start heats control module and shutdown heats control module; Described start heats control module, is used for opening described magnetic valve receiving when heating starting-up signal, behind the 3rd preset time, closes described magnetic valve; Start compressor through the 3rd Preset Time again; Described shutdown heats control module, is used for closing described expansion valve and described compressor receiving when heating off signal, opens described magnetic valve simultaneously, behind the 4th preset time, closes described magnetic valve.
Compared with prior art, the present invention has the following advantages:
The present invention is provided with oil eliminator between cross valve and evaporimeter, this oil eliminator can be communicated with condenser by magnetic valve, is communicated with the air intake duct of compressor by the oil return capillary.When air-conditioner is worked, opening, closing by control magnetic valve and expansion valve, effectively control the oil eliminator internal pressure, utilize the low pressure of suction side to finish oil return automatically, realize the secondary oil return and divide oil effectively to remedy automatically oil separating device is set at the compressor air-discharging place, be difficult to deficiency that oil is separated with cold-producing medium because the gases at high pressure flow velocity is too fast, oil is well separated with cold-producing medium, improve the work effect of air-conditioner.
The diameter of oil eliminator of the present invention is bigger than its tube connector, is equivalent to the muffler of secondary step-down, can play the effect that slows down refrigerant flow rate and abate the noise.
When the present invention is refrigeration mode at air-conditioner, because the refrigerant damp steam of discharging from condenser exports the top that is arranged on oil eliminator, oil eliminator has certain volume, be equivalent to the one-level gas-liquid separator, isolated gas is got back to the vapour liquid separator of press suction side by cross valve, realize the secondary separation of vapour-liquid refrigerant, the liquid that can reduce greatly to freeze back like this may.
Description of drawings
Fig. 1 is existing air conditioner oil returning system schematic diagram;
Fig. 2 is air conditioner oil returning system one an embodiment schematic diagram of the present invention;
Fig. 3 is the embodiment schematic diagram of air conditioning connector of the present invention.
The specific embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Core concept of the present invention is between cross valve and evaporimeter oil eliminator to be set, and this oil eliminator can be communicated with condenser by magnetic valve, is communicated with the air intake duct of compressor by the oil return capillary.When air-conditioner is worked, opening, closing by control magnetic valve and expansion valve, effectively control the oil eliminator internal pressure, utilize the low pressure of suction side to finish oil return automatically, realize the secondary oil return and divide oil effectively to remedy automatically oil separating device is set at the compressor air-discharging place, be difficult to deficiency that oil is separated with cold-producing medium because the gases at high pressure flow velocity is too fast, oil is well separated with cold-producing medium, improve the work effect of air-conditioner.
Consult Fig. 2, be air conditioner oil returning system one embodiment schematic diagram of the present invention, air conditioner oil returning system comprises compressor 11, cross valve 13, condenser 14, expansion valve 15, evaporimeter 16, gas side stop valve 17, oil eliminator 21, magnetic valve 22, oil return capillary 23.Air-conditioner also has gas-liquid separator 18, reservoir 19, oil separating device 12.The reservoir that reservoir 19 is 11 that carry for compressor, have gas-liquid separating function.
Oil eliminator 21 is airtight ellipsoid, and its diameter is much larger than the diameter of tube connector between cross valve 13 and the evaporimeter 16.Oil eliminator 21 is divided into two parts up and down, is separated with separation net between top and bottom.The lubricating oil that is mixed with in the adsorbable refrigerant of separation net.Oil eliminator 21 is arranged between cross valve 13 and the evaporimeter 16, between oil eliminator 21 and the evaporimeter 16 between trapping side stop valve 17.Oil eliminator 21 is arranged on its underpart near the separation net position with the outlet of gas side stop valve 17 tube connectors.Oil eliminator 21 is arranged on top with the outlet of cross valve 13 tube connectors.
One termination of the connection end of magnetic valve 22 is gone into the top of oil eliminator 21, and the other end inserts the pipeline between condenser 14 and the expansion valve 15.The control end of magnetic valve 22 connects air-conditioner controller.For guaranteeing control effectively, the present invention can adopt first magnetic valve and second magnetic valve of polyphone connection, and the control end of first magnetic valve and second magnetic valve is connected air-conditioner controller, the control instruction of the air-conditioner controller of seeking unity of action jointly.
One termination of oil return capillary 23 is gone into the lower bottom end of oil eliminator 21, and the other end inserts in the air intake duct of compressor 11.
The oil return principle of air conditioner oil returning system of the present invention is by controlling opening, closing of magnetic valve 22, expansion valve 15, effectively regulate oil eliminator 21 pressure inside, utilizing the oil eliminator 21 and the pressure differential of compressor 11 suction side to finish oil return automatically.
Magnetic valve 22 is a normally closed solenoid valve, and when the air-conditioner operate as normal, magnetic valve 22 is in closed condition.When the air-conditioning electrifying startup, as receive the refrigeration starting-up signal, open magnetic valve 22, make oil eliminator 21 and condenser 14 internal pressure balances.After a period of time, start compressor 11, the mixture of compressed machine 11 compression back HTHP cold media gas and oil enters condenser 14 through cross valve 13, and the pressure in the condenser 14 is strengthened, because magnetic valve 22 is open-minded, the pressure in the oil eliminator 21 also strengthens thereupon.The suction side of compressor 11 is a low pressure, and under action of pressure, the oil in the oil eliminator 21 is back to compressor 11 by having the air intake duct that oil return capillary 23 flows into compression 11 via reservoir 19.After passing through the less time again, close magnetic valve 22, finish oil return.
After refrigeration finishes, receive the refrigeration off signal, then close expansion valve 15, open magnetic valve 22 simultaneously.Stop behind the compressor 11 running 20S, the normal rotation of blower fan dispels the waste heat of condenser 14, reduces the pressure in the condenser 14, make its rapidly and oil eliminator 21 reach the high-low pressure dynamic balance.In the pressure balance process, the gas-liquid mixture in the condenser 14 flows to oil eliminator 21 under the pressure differential effect, and cold-producing medium is separated with oil, and is back to reservoir 19 by the oil that will separate with compressor 11 suction side generations pressure differential.
Heat starting-up signal when air-conditioner controller receives, then open magnetic valve 22, make oil eliminator 21 and condenser 14 internal pressure balances.After a period of time, magnetic valve 22 is closed in transmission, restarts compressor 11 after the short period of pausing, and the high temperature and high pressure gas that compressor 11 compressions are discharged enters oil eliminator 21, pressure in the oil eliminator 21 is strengthened, and inner oil flows to reservoir 19 by oil return capillary 23.At this moment, the pressure in the oil eliminator 21 is very big, helps oil return.
Heat finish after, air-conditioner controller receives and heats off signal, then open magnetic valve 22, while close compressor 11 and expansion valve 15, the pressure that rapid equilibrium oil separator 21 and evaporimeter are 16, in the pressure balance process, the gas-liquid mixture in the evaporimeter 16 flow to oil eliminator 21, cold-producing medium is separated with oil, and finish oil return by producing pressure differential with compressor 11 suction side.
Oil eliminator 21 of the present invention has good silencing function.When air conditioner heat-production, gases at high pressure enter evaporimeter 16 by oil separating device 12, oil separating device 12 is surveyed in the exhaust of compressor 11 can play sound deadening, if but pressure is higher, and gas flow velocity behind cross valve 13 is still very fast, oil eliminator 21 is because its diameter is more a lot of greatly than its tube connector, the gases at high pressure that fast number flows are when arriving oil eliminator 21, and pressure will correspondingly reduce, and flow velocity slows down, when passing through gas side stop valve again, can not produce noise because of the high pressure throttling.Therefore, oil eliminator 21 is equivalent to the muffler of secondary step-down, plays the effect that slows down refrigerant flow rate and abate the noise.
Air conditioner oil returning system of the present invention can reduce the liquid phenomenon of freezing back.Air-conditioner is worked under refrigeration mode, refrigerant in the evaporimeter 16 can be mixed with certain liquid sometimes unavoidably, because refrigerant is discharged after oil eliminator 21 at evaporimeter 16, pipe outlet is on the top of oil eliminator 21, oil eliminator 21 has certain volume, the one-level gas-liquid separator that is equivalent to freeze, isolated gas is got back to the vapour liquid separator 18 of compressor 11 suction side by cross valve 13, realize the secondary separation of vapour-liquid refrigerant, through twice gas-liquid separation, the generation of the liquid phenomenon that can reduce greatly to freeze back.
Consult Fig. 3, be the embodiment schematic diagram of air conditioning connector of the present invention, controller of air conditioner 30 comprises refrigeration control unit 31 and heats control module 32.Wherein, refrigeration control unit 31 comprises start refrigeration control unit 311 and shutdown refrigeration control unit 312; Heat control module 32 and comprise that start heats control module 321 and shutdown heats control module 322.
Start refrigeration control unit 311 sends to open and instructs to magnetic valve 22 when receiving the refrigeration starting-up signal, and magnetic valve 22 is opened; Start refrigeration control unit 311 begins to clock, and when arriving first preset time, start refrigeration control unit 311 sends enabled instruction to compressor 11, compressor 11 starts, through first Preset Time, start refrigeration control unit 311 sends out code to magnetic valve 22 again, and magnetic valve 22 cuts out.
In first preset time, the pressure balance of finishing between oil eliminator 21 and the condenser 14, first preset time is preferably 3 minutes.In first Preset Time, the oil of separating is finished oil return automatically under oil eliminator 21 and compressor 11 suction side pressure differential effects, and first Preset Time is preferably 30 seconds.
Shutdown refrigeration control unit 312 sends out code to expansion valve 15 when receiving the refrigeration off signal, expansion valve 15 cuts out; The refrigeration control unit of shutting down simultaneously 312 sends to open instructs to magnetic valve 22, and magnetic valve 22 is opened, and during to second preset time, shutdown refrigeration control unit 312 sends out code to magnetic valve 22, and magnetic valve 22 cuts out.
In second preset time, compressor 11 just stops after still moving 30 seconds, blower fan runs well and dispels the waste heat of condenser 14, allow just pressure of condenser 14 and oil eliminator 21 rapid balances, in the pressure balance process, gas-liquid mixture in the condenser 14 flows through oil eliminator 21, and cold-producing medium is separated with oil, finishes oil return by producing pressure differential with compressor 11 suction side simultaneously.Second preset time is preferably 2 minutes.
Start heats control module 321 and is receiving when heating starting-up signal, sends to open and instructs to magnetic valve 22, and magnetic valve 22 is open-minded, and behind the 3rd preset time, start heats control module 321 and sends out codes to magnetic valve 22, and magnetic valve 22 cuts out.Again through the 3rd Preset Time, start heats control module 321 and sends to open and instruct to compressor 11, and compressor 11 starts.
In the 3rd preset time, carry out pressure balance between oil eliminator 21 need and the condenser 14.The 3rd preset time is preferably 2 minutes and 50 seconds.Waiting for the 3rd Preset Time, is to be preferably 10 seconds for the gas that prevents HTHP enters condenser 14, the three Preset Times by magnetic valve 22.
Shutdown refrigeration control unit 322 is receiving when heating off signal, send out code to expansion valve 15 and compressor 11, expansion valve 15 and compressor 11 are closed, send to open simultaneously and instruct to magnetic valve 22, magnetic valve 22 is opened, send out code magnetic valve 22 behind the 4th preset time, magnetic valve 22 cuts out.
In the 4th preset time, oil eliminator 21 and evaporimeter 16 balances height pressure, in the pressure balance process, the gas-liquid mixture in the evaporimeter 16 flows through oil eliminator 21, cold-producing medium is separated with oil, finish oil return by producing pressure differential simultaneously with compressor 11 suction side.The 4th preset time is preferably 2 minutes.
The oil return system of above-mentioned air-conditioner may be used in the temperature control systems such as refrigerator, refrigerating chamber, moist closet fully, only need oil eliminator to be set in refrigerator, refrigerating chamber, moist closet corresponding position, use the oil return capillary to connect the suction side of oil eliminator and compressor, connect oil eliminator and off-premises station device by magnetic valve, by controlling opening, closing of magnetic valve, utilize the pressure differential of oil eliminator and suction side to finish oil return automatically.
More than a kind of air conditioner oil returning system provided by the present invention is described in detail, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. an air conditioner oil returning system comprises compressor, cross valve, condenser, expansion valve, evaporimeter, gas side stop valve, it is characterized in that, also comprises: oil eliminator, magnetic valve and oil return capillary;
Described oil eliminator connects described cross valve and described evaporimeter; Described magnetic valve connects described oil eliminator and described condenser; Described oil return capillary connects described oil eliminator and described compressor.
2. system according to claim 1 is characterized in that described oil eliminator is divided into the upper and lower, is separated with separation net between its upper and lower.
3. system according to claim 2 is characterized in that, described magnetic valve is communicated with a termination of end and goes into the top of described oil eliminator, and the other end inserts the pipeline between described condenser and the described expansion valve.
4. oil return system according to claim 1 is characterized in that, described magnetic valve comprises first magnetic valve and second magnetic valve that polyphone connects.
5. system according to claim 2 is characterized in that, described oil return capillary one termination is gone into the bottom of described oil eliminator, and the other end inserts the air intake duct of described compressor.
6. system according to claim 2 is characterized in that, the tube connector outlet of described oil eliminator and described cross valve is arranged on top; Described oil eliminator is communicated with described evaporimeter by described gas side stop valve.
7. according to each described system of claim 1 to 6, it is characterized in that, also comprise:
Controller of air conditioner, described magnetic valve connects described air-conditioner controller.
8. system according to claim 7 is characterized in that, described controller of air conditioner comprises refrigeration control unit and heats control module;
Described refrigeration control unit is used under refrigeration mode, by controlling opening, closing of described magnetic valve and described expansion valve, finishes oil return automatically;
The described control module that heats is used under heating mode, by controlling opening, closing of described magnetic valve and expansion valve, finishes oil return automatically.
9. system according to claim 8 is characterized in that, described refrigeration control unit comprises start refrigeration control unit and shutdown refrigeration control unit;
Described start refrigeration control unit is used for when receiving the refrigeration starting-up signal, and described magnetic valve is open-minded, starts described compressor behind first preset time; Close described magnetic valve through first Preset Time again;
Described shutdown refrigeration control unit is used for closing described expansion valve when receiving the refrigeration off signal, opens described magnetic valve simultaneously, behind second preset time, closes described magnetic valve.
10. according to Claim 8 or 9 described oil return systems, it is characterized in that the described control module that heats comprises that start heats control module and shutdown heats control module;
Described start heats control module, is used for opening described magnetic valve receiving when heating starting-up signal, behind the 3rd preset time, closes described magnetic valve; Start compressor through the 3rd Preset Time again;
Described shutdown refrigeration control unit is used for closing described expansion valve and described compressor receiving when heating off signal, opens described magnetic valve simultaneously, behind the 4th preset time, closes described magnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101384019A CN100549566C (en) | 2006-11-10 | 2006-11-10 | A kind of air conditioner oil returning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101384019A CN100549566C (en) | 2006-11-10 | 2006-11-10 | A kind of air conditioner oil returning system |
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| Publication Number | Publication Date |
|---|---|
| CN101178272A true CN101178272A (en) | 2008-05-14 |
| CN100549566C CN100549566C (en) | 2009-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101384019A Expired - Fee Related CN100549566C (en) | 2006-11-10 | 2006-11-10 | A kind of air conditioner oil returning system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103017389A (en) * | 2012-09-25 | 2013-04-03 | 无锡溥汇机械科技有限公司 | High-precision temperature control type heat exchange system |
| CN103017390A (en) * | 2012-09-25 | 2013-04-03 | 无锡溥汇机械科技有限公司 | Improved heat exchange system |
| CN103671030A (en) * | 2012-09-12 | 2014-03-26 | 珠海格力电器股份有限公司 | Compressor oil return system and control method |
| CN104654667A (en) * | 2013-11-25 | 2015-05-27 | 珠海格力电器股份有限公司 | Outdoor unit module of multiple on-line system and multiple on-line system provided with same |
| CN108662816A (en) * | 2018-06-11 | 2018-10-16 | 珠海格力电器股份有限公司 | Return oil system and air-conditioning |
| CN110986430A (en) * | 2019-12-31 | 2020-04-10 | 珠海格力电器股份有限公司 | Effective oil return control method and device and air conditioning unit |
| CN115183510A (en) * | 2022-07-18 | 2022-10-14 | 青岛海尔空调电子有限公司 | Air conditioning system, compressor oil return system and control method |
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2006
- 2006-11-10 CN CNB2006101384019A patent/CN100549566C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103671030A (en) * | 2012-09-12 | 2014-03-26 | 珠海格力电器股份有限公司 | Compressor oil return system and control method |
| CN103671030B (en) * | 2012-09-12 | 2015-11-25 | 珠海格力电器股份有限公司 | The controlling method of compressor return oil system |
| CN103017389A (en) * | 2012-09-25 | 2013-04-03 | 无锡溥汇机械科技有限公司 | High-precision temperature control type heat exchange system |
| CN103017390A (en) * | 2012-09-25 | 2013-04-03 | 无锡溥汇机械科技有限公司 | Improved heat exchange system |
| CN103017389B (en) * | 2012-09-25 | 2015-09-09 | 无锡溥汇机械科技有限公司 | High-precision temperature control type heat exchange system |
| CN103017390B (en) * | 2012-09-25 | 2015-12-02 | 无锡溥汇机械科技有限公司 | Improved hot exchange system |
| CN104654667A (en) * | 2013-11-25 | 2015-05-27 | 珠海格力电器股份有限公司 | Outdoor unit module of multiple on-line system and multiple on-line system provided with same |
| CN108662816A (en) * | 2018-06-11 | 2018-10-16 | 珠海格力电器股份有限公司 | Return oil system and air-conditioning |
| CN108662816B (en) * | 2018-06-11 | 2023-10-13 | 珠海格力电器股份有限公司 | Air conditioner oil return system and air conditioner |
| CN110986430A (en) * | 2019-12-31 | 2020-04-10 | 珠海格力电器股份有限公司 | Effective oil return control method and device and air conditioning unit |
| CN115183510A (en) * | 2022-07-18 | 2022-10-14 | 青岛海尔空调电子有限公司 | Air conditioning system, compressor oil return system and control method |
| CN115183510B (en) * | 2022-07-18 | 2023-11-24 | 青岛海尔空调电子有限公司 | Air conditioning system, compressor oil return system and control method |
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| Publication number | Publication date |
|---|---|
| CN100549566C (en) | 2009-10-14 |
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