CN100549566C - A kind of air conditioner oil returning system - Google Patents
A kind of air conditioner oil returning system Download PDFInfo
- Publication number
- CN100549566C CN100549566C CNB2006101384019A CN200610138401A CN100549566C CN 100549566 C CN100549566 C CN 100549566C CN B2006101384019 A CNB2006101384019 A CN B2006101384019A CN 200610138401 A CN200610138401 A CN 200610138401A CN 100549566 C CN100549566 C CN 100549566C
- Authority
- CN
- China
- Prior art keywords
- magnetic valve
- oil
- valve
- compressor
- oil eliminator
- 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
Links
Images
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Compressor (AREA)
Abstract
The invention discloses a kind of air conditioner oil returning system, comprising: oil eliminator, magnetic valve, oil return capillary and controller of air conditioner; 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.Described magnetic valve connects described air-conditioner controller; 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.The present invention can separate oil effectively with refrigerant, improve the work effect of air-conditioner, and can abate the noise better, and the liquid phenomenon that prevents to freeze back takes place.
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, oil return capillary and controller of air conditioner; 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 is connected described air-conditioner controller with the described magnetic valve of described compressor; 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 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, 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.
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.
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.
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 (8)
1, a kind of 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, oil return capillary and controller of air conditioner;
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 is connected described air-conditioner controller with the described magnetic valve of described compressor; 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.
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, system according to claim 1 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.
According to claim 1 or 7 described oil return systems, it is characterized in that 8, 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 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101178272A CN101178272A (en) | 2008-05-14 |
CN100549566C true CN100549566C (en) | 2009-10-14 |
Family
ID=39404617
Family Applications (1)
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 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN100549566C (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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 |
CN104654667B (en) * | 2013-11-25 | 2017-11-21 | 珠海格力电器股份有限公司 | The outdoor unit modules of multiple on-line system and there is its multiple on-line system |
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 |
CN110986430B (en) * | 2019-12-31 | 2020-11-10 | 珠海格力电器股份有限公司 | Effective oil return control method and device and air conditioning unit |
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 |
-
2006
- 2006-11-10 CN CNB2006101384019A patent/CN100549566C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN101178272A (en) | 2008-05-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN100549566C (en) | A kind of air conditioner oil returning system | |
CN100470165C (en) | Engine heat pump | |
EP2924295B1 (en) | Refrigeration circuit | |
CN103003641A (en) | High efficiency ejector cycle | |
CN102645057A (en) | Oil returning method during heating of multi-split air-conditioning unit | |
JP4863085B2 (en) | Engine exhaust gas purification device and engine-driven air conditioner | |
CN101627268A (en) | By reducing the pulsewidth modulation that pressure of inspiration(Pi) is raised the efficiency | |
CN100554828C (en) | The equipment that is used for the switching air conditioner refrigerant pipe | |
JP4069656B2 (en) | Vapor compression refrigerator | |
CN102251965A (en) | Compressor capable of performing one-stage and double-stage switching, and control method thereof | |
US20110289961A1 (en) | Enhanced liquid pressure cycle having an ejector | |
CN100526756C (en) | Apparatus for switching air conditioner refrigerant pipes | |
CN212204743U (en) | Kitchen air conditioning system | |
CN108731311B (en) | Compressor assembly and air conditioning system thereof | |
CN101086397A (en) | Air conditioner refrigerant conversion device control method | |
CN112781128B (en) | Air conditioning system and control method thereof | |
CN101113853A (en) | Gas air conditioner oil return device and controlling method | |
CN112013558A (en) | Air conditioner system, air conditioner and control method of air conditioner | |
CN2438967Y (en) | Separating air conditioner | |
US20100251759A1 (en) | Liquid pressure cycle having an ejector | |
JP3480778B2 (en) | Multi-type air conditioner | |
JP2007178047A (en) | Silencer | |
CN217057924U (en) | Noise reduction device for air conditioner fan | |
CN2921721Y (en) | Jet expansion two-section evaporation steam compression refrigerating device | |
CN100588889C (en) | Capacity adjustable freezing circulation system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 Termination date: 20161110 |