CN105371532B - Air conditioner - Google Patents
Air conditioner Download PDFInfo
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- CN105371532B CN105371532B CN201510990276.3A CN201510990276A CN105371532B CN 105371532 B CN105371532 B CN 105371532B CN 201510990276 A CN201510990276 A CN 201510990276A CN 105371532 B CN105371532 B CN 105371532B
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- air conditioner
- evaporator
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Classifications
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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
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating arrangements
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Compressor (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention discloses a kind of air conditioner, including：Compressor, compressor have exhaust outlet and gas returning port；Evaporator, the first end of evaporator are connected with gas returning port, have the first gas phase zone and the liquid phase region below the first gas phase zone in evaporator；Condenser, the first end of condenser are connected with exhaust outlet, have the second gas phase zone in condenser；Fluid reservoir, fluid reservoir has liquid taking port, gas outlet, high-pressure inlet and oil return opening, liquid taking port is connected by liquid flowing tube road with liquid phase region, oil return opening is connected by return line with the oil sump of compressor, high-pressure inlet is connected by gas exhaust piping with exhaust outlet to be discharged into the gaseous coolant of HTHP into fluid reservoir, and gas outlet is connected by return line with gas returning port；Control device.According to the air conditioner of the present invention, it can be achieved continuously to take liquid, the lubricating oil of high-purity obtained, without setting Venturi transmission ejector.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly, to a kind of air conditioner.
Background technology
The oil return system of refrigeration unit is typically formed using Venturi transmission ejector and purification tank in the prior art.Venturi draws
There is the aditus laryngis of very little in emitter, easily led by foreign matters from being blocked and clear up after blocking difficult, generally required integral replacing, add
Cost.And this oil return system system is bad to the separating effect of refrigerant and lubricating oil, still have in the lubricating oil after purification big
The refrigerant of amount, influence the temperature and viscosity of lubricating oil in compressor sump.In addition, the oil return process of this oil return system takes liquid
Stage, proposition stage and oil return stage are carried out simultaneously, certain single order that can not be according to the oil return demand of refrigeration unit to oil return process
Duan Jinhang is individually controlled.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.Therefore, the present invention carries
Go out a kind of air conditioner, without setting Venturi transmission ejector, reduce cleaning difficulty and cost, and refrigerant and lubricating oil can be improved
Separating effect, the lubricating oil of high-purity is obtained, but also can be easily to taking liquid stage, purification phase and oil return stage to carry out
Individually control.
Air conditioner according to embodiments of the present invention includes：Compressor, the compressor have exhaust outlet and gas returning port；Evaporation
Device, the first end of the evaporator are connected with the gas returning port, have the first gas phase zone in the evaporator and positioned at described the
Liquid phase region below one gas phase zone；Condenser, the first end of the condenser are connected with the exhaust outlet, and the of the condenser
Two ends are connected with the second end of the evaporator, have the second gas phase zone in the condenser；Restricting element, the restricting element
It is connected between the second end of the condenser and the second end of the evaporator；Fluid reservoir, the fluid reservoir have liquid taking port,
Gas outlet, high-pressure inlet and oil return opening, the liquid taking port are connected by liquid flowing tube road with the liquid phase region, on the liquid flowing tube road
The first control valve is in series with, the oil return opening is connected by return line with the oil sump of the compressor, on the return line
The second control valve is in series with, the high-pressure inlet is connected to be discharged into the fluid reservoir by gas exhaust piping with the exhaust outlet
The gaseous coolant of HTHP, the 3rd control valve is in series with the gas exhaust piping, the gas outlet passes through return line and institute
Gas returning port connection is stated, the 4th control valve is in series with the return line；Control device, the control device is respectively with described
One control valve is connected to the 4th control valve to control first control valve to the 4th control valve to be turned on and off.
Air conditioner according to embodiments of the present invention, by setting liquid taking port, gas outlet, high-pressure inlet on fluid reservoir and returning
Hydraulic fluid port, and make liquid taking port be connected by liquid flowing tube road with the liquid phase region of evaporator, oil return opening pass through return line and compressor
Oil sump is connected, and high-pressure inlet is connected to be discharged into the gaseous coolant of HTHP into fluid reservoir by gas exhaust piping with exhaust outlet,
Gas outlet is connected by return line with gas returning port, while is divided in liquid flowing tube road, return line, gas exhaust piping and return line
First control valve of not contacting to the 4th control valve, and using control device be connected respectively with the first control valve to the 4th control valve with
Control the first control valve to the 4th control valve to be turned on and off, on the one hand can be in order to the refrigerant in liquid phase region and lubricating oil it is mixed
Compound continues through liquid flowing tube using the self gravitation of the pressure difference in evaporator and fluid reservoir and lubricating oil and refrigerant mixture
Road is back in fluid reservoir, and continuously liquid is taken so as to realize, on the other hand using the pressure difference in exhaust outlet and fluid reservoir so that exhaust
The refrigerant of the HTHP of mouth discharge is flowed into fluid reservoir, can not only heat lubricating oil and refrigerant mixture so that liquid is cold
Matchmaker vaporizes, and is discharged from gas outlet to separate liquid refrigerants and lubricating oil, improves the separating effect of liquid refrigerants and lubricating oil, with
The lubricating oil of high-purity is obtained, but also the lubricating oil after purification can be pressed into compressor by force in order to the refrigerant of HTHP
It is interior, without setting Venturi transmission ejector, cleaning, maintenance and replacing to Venturi transmission ejector are avoided, advantageously reduces cost；
Individually accurate control easily can be carried out to each stage of oil return process according to the oil return demand of air conditioner simultaneously；It is whole to return
Oily process, it is simple and reliable.
According to some embodiments of the present invention, liquid level of the liquid taking port less than the liquid phase region in the evaporator.
According to some embodiments of the present invention, first control valve is check valve or magnetic valve.
According to some embodiments of the present invention, second control valve is magnetic valve.
According to some embodiments of the present invention, the 3rd control valve is magnetic valve.
According to some embodiments of the present invention, the 4th control valve is magnetic valve.
According to some embodiments of the present invention, air conditioner also includes on from the oil return opening to the direction of the compressor
The check valve of one-way conduction, the check valve are connected on the return line.
According to some embodiments of the present invention, liquid level of the oil return opening higher than the oil sump of the compressor.
According to some embodiments of the present invention, the gas exhaust piping is connected between the exhaust outlet and the condenser,
The return line is connected between the gas returning port and the evaporator.
According to some embodiments of the present invention, air conditioner also includes temperature sensor, and the temperature sensor is located at described
For the temperature of the detection fluid reservoir on fluid reservoir.
Brief description of the drawings
Fig. 1 is the schematic diagram of air conditioner according to embodiments of the present invention.
Reference：
Air conditioner 100；
Compressor 1；Exhaust outlet a；Gas returning port b；Evaporator 2；Liquid phase region 21；First gas phase zone 22；Condenser 3；Second gas
Phase region 31；Fluid reservoir 4；Liquid taking port c；Gas outlet d；High-pressure inlet e；Oil return opening f；Liquid flowing tube road 5；First control valve 51；Oil return
Pipeline 6；Second control valve 61；Gas exhaust piping 7；3rd control valve 71；Return line 8；4th control valve 81；Check valve 9；Temperature
Sensor 10；Restricting element 11.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings.Below with reference to
The embodiment of accompanying drawing description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " on ", " under ", "left", "right", " vertical ", " level ",
" top ", " bottom " " interior ", " outer ", etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship, be only
Described for the ease of description is of the invention with simplified, rather than the device or element of instruction or hint meaning must be with specifically sides
Position, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect or can communicate each other；Can be joined directly together, can also be indirectly connected by intermediary, can be with
It is connection or the interaction relationship of two elements of two element internals, is limited unless otherwise clear and definite.For this area
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
Air conditioner 100 according to embodiments of the present invention is described below with reference to Fig. 1, can be used for adjusting indoor environment temperature.
As shown in figure 1, air conditioner 100 according to embodiments of the present invention can include compressor 1, evaporator 2, condenser 3,
Restricting element 11, fluid reservoir 4 and control device (not shown).
Specifically, compressor 1 has exhaust outlet a and gas returning port b, and the refrigerant after heat exchange returns to compression by gas returning port b
Machine 1, the refrigerant of HTHP is formed after the compression of compressor 1, and discharged from exhaust outlet a.It should be noted that compressor 1
Structure and working principle is by as it is known to those skilled in the art that be no longer described in detail herein.
The first end (for example, the upper end shown in Fig. 1) of evaporator 2 is connected with gas returning port b, thus, is exchanged heat in evaporator 2
Refrigerant afterwards can pass through the first end of evaporator 2 and gas returning port b returns to compressor 1.There is the first gas phase zone in evaporator 2
22 and positioned at the liquid phase region 21 of the lower section of the first gas phase zone 22.Specifically, air conditioner 100 is in long-term running, compression
A part of lubricating oil in machine 1 can passing into refrigerant flow with refrigerant, and enter in evaporator 2.First gas
Gas in phase region 22 is gaseous coolant, and the liquid in liquid phase region 21 is the mixture of liquid refrigerants and lubricating oil.
The first end (for example, the upper end shown in Fig. 1) of condenser 3 is connected with exhaust outlet a, the second end (example of condenser 3
Such as, the lower end shown in Fig. 1) it is connected with the second end (for example, the lower end shown in Fig. 1) of evaporator 2, so as to form refrigerant stream
Road, in order to the circulation of refrigerant.Restricting element 11 be connected between the second end of condenser 3 and the second end of evaporator 2 so as to
It is depressured in coolant throttle.Condenser 3 has the second gas phase zone 31, the gas for the HTHP discharged from the exhaust outlet a of compressor 1
State refrigerant enters the second gas phase zone 31 of condenser 3.Wherein it should be noted that the refrigeration of air conditioner 100 and heating principle
It has been be well known to those skilled in the art that, be no longer described in detail herein.
Alternatively, restricting element can be electric expansion valve, heating power expansion valve or capillary.
Fluid reservoir 4 has liquid taking port c, gas outlet d, high-pressure inlet e and oil return opening f.Wherein, liquid taking port c passes through liquid flowing tube
Road 5 is connected with liquid phase region 21, consequently facilitating the mixture of the lubricating oil and liquid refrigerants in the liquid phase region 21 of evaporator 2 is by taking
Liquid pipeline 5 flows to fluid reservoir 4.The first control valve 51 is in series with liquid flowing tube road 5 to control the break-make on liquid flowing tube road 5, when first
When control valve 51 is opened, liquid flowing tube road 5 turns on, and when the first control valve 51 is closed, liquid flowing tube road 5 disconnects.Alternatively, the first control
Valve 51 processed is check valve 9 or magnetic valve, simple in construction.Preferably, the first control valve 51 is magnetic valve, not only simple in construction, can
Lean on, and magnetic valve is quick on the draw.
Oil return opening f is connected by return line 6 with the oil sump of compressor 1, thus, it is possible to be easy to after being purified in fluid reservoir 4
Lubricating oil the oil sump of compressor 1 is flowed to by return line 6.The second control valve 61 is in series with return line 6 to control back
The break-make of oil pipe line 6.When the second control valve 61 is opened, return line 6 turns on, when the second control valve 61 is closed, oil return pipe
Road 6 disconnects.Alternatively, the second control valve 61 is magnetic valve.Wherein it is possible to understand, the oil sump of compressor 1 can be located at
Fuel tank outside the inside of compressor 1 or compressor 1.
High-pressure inlet e is connected cold to be discharged into the gaseous state of HTHP into fluid reservoir 4 by gas exhaust piping 7 with exhaust outlet a
Matchmaker, thus, it is discharged into mixing of the gaseous coolant of the HTHP in fluid reservoir 4 to lubricating oil and liquid refrigerants in fluid reservoir 4
Thing has strong heat effect, so that liquid refrigerants heat absorption is vaporized into gaseous coolant, to realize liquid refrigerants and lubrication
The separation of oil, the separating effect of liquid refrigerants and lubricating oil is improved, obtain the lubricating oil of high-purity., wherein it is desired to explanation,
Gas exhaust piping 7 and exhaust outlet a connection can be that (i.e. the one of gas exhaust piping 7 is directly connected between gas exhaust piping 7 and exhaust outlet a
End be connected directly to exhaust outlet a) or gas exhaust piping 7 with and the connections of pipeline that connect of exhaust outlet a, for example, gas exhaust piping 7
Be connected between the first end of exhaust outlet a and condenser 3 or gas exhaust piping 7 be connected to condenser 3 the second gas phase zone 31,
Or gas exhaust piping 7 is connected to the discharge chamber of compressor 1.
The 3rd control valve 71 is in series with gas exhaust piping 7, the 3rd control valve 71 can control the break-make of gas exhaust piping 7.When
When 3rd control valve 71 is opened, gas exhaust piping 7 turns on, and when the 3rd control valve 71 is closed, gas exhaust piping 7 disconnects.Alternatively,
Three control valves 71 can be magnetic valve, simple in construction, reliable, and magnetic valve is quick on the draw.
Gas outlet d is connected by return line 86 with gas returning port b, and thus, the conducting of one side return line 86 can be so as to
It is back in the lubricating oil in liquid phase region 21 and the mixture of liquid refrigerants in fluid reservoir 4；On the other hand it is blended in lubricating oil
The HTHP that is drained into gas exhaust piping 7 in fluid reservoir 4 of liquid refrigerants refrigerant heating vaporization after, with HTHP
By return line 8, compressor 1 is returned to by gas returning port b together for refrigerant.
, wherein it is desired to explanation, return line 8 and gas returning port b connection, can be return line 8 and gas returning port b
Directly connection (for example, one end of return line 8 is connected directly to gas returning port b), or return line 8 with and gas returning port b connect
Other pipelines connection, such as return line 8 is connected to pipeline or the steaming between the first end of gas returning port b and evaporator 2
Send out the first gas phase zone 22 of device 2.The 4th control valve 81 is in series with return line 8 to control the break-make of return line 8.When the 4th
When control valve 81 is opened, return line 8 turns on, and when the 4th control valve 81 is closed, return line 8 disconnects.Alternatively, the 4th control
Valve 81 processed can be magnetic valve, simple in construction, reliable, and magnetic valve is quick on the draw.
Control device is connected with the control valve 81 of the first control valve 51 to the 4th to control the first control valve 51 to the 4th respectively
Control valve 81 is turned on and off.
Specifically, the oil return process of air conditioner 100 includes taking liquid stage, purification phase and oil return stage.
When the mixture of the certain lubricating oil of accumulation in the liquid phase region 21 of evaporator 2 and liquid refrigerants, control device control
Make the first control valve 51 and the 4th control valve 81 is opened, the 3rd control valve 71 and the second control valve 61 are closed, due to compressor 1 not
Work disconnectedly, constantly there is refrigerant to flow in compressor 1 at gas returning port b, therefore gas returning port b pressure is less than in evaporator 2
Pressure, this causes the pressure in the fluid reservoir 4 that is connected by gas outlet d and return line 8 with gas returning port b less than in evaporator 2
Pressure, it is possible thereby to utilize the pressure differential in evaporator 2 and fluid reservoir 4 and lubricating oil and liquid refrigerants mixture itself
Gravity make it that realization takes liquid to the mixture continuous backflow of lubricating oil and liquid refrigerants in fluid reservoir 4.After the completion of liquid is taken, control
Device processed controls the first control valve 51 and the second control valve 61 to close, and controls the 3rd control valve 71 and the 4th control valve 81 to open,
Utilize the pressure differential at fluid reservoir 4 and exhaust outlet a so that the gaseous coolant for the HTHP discharged at exhaust outlet a flows into storage
In flow container 4, to heat the mixture of lubricating oil and liquid refrigerants in fluid reservoir 4 so that the liquid refrigerants heat absorption vapour in mixture
Change, and compressor 1 is returned to by gas outlet d, return line 8 and gas returning port b, realize the separation of liquid refrigerants and lubricating oil.
After purification terminates, control device controls the first control valve 51, the 4th control valve 81 to close, and controls the second control valve 61 and the 3rd
Control valve 71 is opened, and utilizes the pressure differential at fluid reservoir 4 and exhaust outlet a so that the refrigerant of the HTHP of exhaust outlet a discharges enters
Enter into fluid reservoir 4, and by the lubricating oil after purifying in fluid reservoir 4, compression is pressed back into by force by oil return opening f, return line 6
The oil sump of machine 1, without setting Venturi transmission ejector.
Wherein, the control valve 81 of the first control valve 51 to the 4th is controlled by control device and takes liquid stage, purification rank to realize
Section and the progress respectively in oil return stage, can control each of oil return process respectively in order to the oil return demand according to air conditioner 100
Stage, in order to just enter next stage after the completion of each stage, so as to realize to taking liquid stage, purification phase and oil return
The independent accurate control in stage.
Therefore, by above-mentioned setting, on the one hand can be utilized in order to the mixture of the refrigerant in liquid phase region 21 and lubricating oil
Evaporator 2 and pressure difference in fluid reservoir 4 and the self gravitation of the mixture of lubricating oil and refrigerant continue through liquid flowing tube road 5 and returned
Flow in fluid reservoir 4, continuously liquid is taken so as to realize, on the other hand using the pressure difference in exhaust outlet a and fluid reservoir 4 so that exhaust outlet
The refrigerant of the HTHP of a discharges is flowed into fluid reservoir 4, can not only heat the mixture of lubricating oil and refrigerant so that liquid
Refrigerant is vaporized, and the separation effect for separate liquid refrigerants and lubricating oil, improving liquid refrigerants and lubricating oil is discharged from gas outlet d
Fruit, to obtain the lubricating oil of high-purity, but also the lubricating oil after purification can be pressed into by force in order to the refrigerant of HTHP
In compressor 1, without setting Venturi transmission ejector, cleaning, maintenance and replacing to Venturi transmission ejector are avoided, is advantageous to drop
Low cost；Simultaneously can be easily according to the oil return demand of air conditioner 100 to taking liquid stage, purification phase and oil return stage to carry out
Individually accurate control；Whole oil return process, it is simple and reliable.
Air conditioner 100 according to embodiments of the present invention, by setting liquid taking port c, gas outlet d, height to be pressed on fluid reservoir 4
Mouth e and oil return opening f, and liquid taking port c is connected by liquid flowing tube road 5 with the liquid phase region 21 of evaporator 2, oil return opening f passes through oil return
Pipeline 6 is connected with the oil sump of compressor 1, and high-pressure inlet e is connected to be discharged into fluid reservoir 4 by gas exhaust piping 7 with exhaust outlet a
The gaseous coolant of HTHP, gas outlet d are connected by return line 8 with gas returning port b, while in liquid flowing tube road 5, return line
6th, contact in gas exhaust piping 7 and return line 8 first control valve 51 to the 4th control valve 81, and distinguished using control device respectively
It is connected with the control valve 81 of the first control valve 51 to the 4th to control the control valve 81 of the first control valve 51 to the 4th to be turned on and off, one
Aspect can in order to the refrigerant in liquid phase region 21 and the mixture of lubricating oil using the pressure difference in evaporator 2 and fluid reservoir 4 and
The self gravitation of lubricating oil and refrigerant mixture continues through liquid flowing tube road 5 and is back in fluid reservoir 4, is continuously taken so as to realize
Liquid, on the other hand using the pressure difference in exhaust outlet a and fluid reservoir 4 so that the refrigerant of the HTHP of exhaust outlet a discharges is flowed into and stored up
In flow container 4, lubricating oil and refrigerant mixture can be not only heated so that liquid refrigerants vaporizes, and is discharged from gas outlet d to separate
Liquid refrigerants and lubricating oil, the separating effect of liquid refrigerants and lubricating oil is improved, to obtain the lubricating oil of high-purity, but also can
The lubricating oil after purification is pressed into compressor 1 by force in order to the refrigerant of HTHP, without setting Venturi transmission ejector, kept away
Exempt from cleaning, maintenance and the replacing to Venturi transmission ejector, advantageously reduce cost；Simultaneously can be easily according to air conditioner
100 oil return demand carries out individually accurate control to each stage of oil return process；Whole oil return process, it is simple and reliable.
According to some embodiments of the present invention, liquid taking port c is less than the liquid level of the liquid phase region 21 in evaporator 2, so as to
The lubricating oil and the mixture of liquid refrigerants being easy in liquid phase region 21 continue through liquid flowing tube road 5 using self gravitation and are back to storage
In flow container 4.
In some embodiments of the invention, air conditioner 100 also includes unidirectional on 1 direction from oil return opening f to compressor
The check valve 9 of conducting, check valve 9 are connected on return line 6, so as to ensure that the lubricating oil after being purified in fluid reservoir 4 can be from storage
The one-way flow of flow container 4 avoids lubricating oil from flowing backwards to the oil sump of compressor 1.
In some embodiments of the invention, when oil return opening f is higher than the liquid level of the oil sump of compressor 1, it is possible thereby to avoid
The oil sump of lubricating oil from compressor 1 is blowed back into fluid reservoir 4.It is understood that when oil return opening f is higher than the liquid level of compressor 1
When, even if air conditioner 100 is not provided with above-mentioned check valve 9, lubricating oil can also be avoided to flow backwards.
Certainly, in further embodiments, such as when the reliable operation of the second control valve 61, No leakage, or return line 6
When one end hydraulic fluid port connected with the oil sump of compressor 1 is consistently higher than the sump liquid level of compressor 1, even if air conditioner 100 is not provided with
Check valve 9, liquid levels of the oil return opening f higher than the oil sump of compressor 1 is not required, be also possible to prevent lubricating oil refluence.
In some embodiments of the invention, gas exhaust piping 7 is connected between exhaust outlet a and condenser 3, return line 8
It is connected between oil return opening f and evaporator 2, it is simple in construction, facilitate direct labor to assemble.
According to some embodiments of the present invention, air conditioner 100 also includes temperature sensor 10, and temperature sensor 10 is located at storage
For detecting the temperature of fluid reservoir 4 on flow container 4, so as to which the temperature value detected according to temperature sensor 10 judges oil return process
The performance of middle purification phase.Specifically, during purification phase, temperature sensor 10 persistently detects fluid reservoir 4
Temperature, when temperature sensor 10 detects that obvious rise occurs in the temperature of fluid reservoir 4, then judge purification phase completion.
Certainly, in other embodiments, the performance of purification phase can also judge according to the time set in advance.
For example, after the completion of the liquid stage is taken, control device controls the first control valve 51 and the second control valve 61 to close, the control of control the 3rd
The control valve 81 of valve 71 and the 4th is opened to start to purify, and when can now pass through timer, after lasting purification T1 minutes, is then recognized
Completed for purification phase, so as to avoid the setting of temperature sensor 10.
Or in further embodiments, the performance of purification phase can also be set by temperature sensor 10 and in advance
The fixed time judges jointly.For example, after the completion of the liquid stage is taken, device processed controls the first control valve 51 and the second control valve 61 to close
Close, control the 3rd control valve 71 and the 4th control valve 81 to open to start to purify, when can pass through timer, as lasting purification T2
After minute, if there is obvious rise in the temperature value that temperature sensor 10 detects, then it is assumed that purification phase is completed；If temperature passes
Sensor 10 does not occur the situation that temperature value substantially rises, then continues to purify T3 minutes, so as to ensure being smoothed out for purification process,
It can also ensure to purify out the lubricating oil of high-purity simultaneously.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (10)
- A kind of 1. air conditioner, it is characterised in that including：Compressor, the compressor have exhaust outlet and gas returning port；Evaporator, the first end of the evaporator are connected with the gas returning port, have the first gas phase zone and position in the evaporator Liquid phase region below first gas phase zone；Condenser, the first end of the condenser are connected with the exhaust outlet, the second end and the evaporator of the condenser The second end be connected, there is the second gas phase zone in the condenser；Restricting element, the restricting element are connected between the second end of the condenser and the second end of the evaporator；Fluid reservoir, the fluid reservoir have liquid taking port, gas outlet, high-pressure inlet and oil return opening, and the liquid taking port passes through liquid flowing tube Road is connected with the liquid phase region, and the first control valve is in series with the liquid flowing tube road, and the oil return opening passes through return line and institute State the oil sump connection of compressor, be in series with the second control valve on the return line, the high-pressure inlet by gas exhaust piping with The exhaust outlet connection is in series with the 3rd to be discharged into the gaseous coolant of HTHP into the fluid reservoir on the gas exhaust piping Control valve, the gas outlet are connected by return line with the gas returning port, and the 4th control valve is in series with the return line；Control device, the control device are connected with first control valve to the 4th control valve to control described respectively One control valve to the 4th control valve is turned on and off；Wherein, the oil return process of the air conditioner includes taking liquid stage, purification phase and oil return stage, and the liquid stage is taken described, The control device controls first control valve and the 4th control valve is opened and the 3rd control valve and described second Control valve is closed；In the purification phase, the control device controls first control valve and second control valve to close And control the 3rd control valve and the 4th control valve to open, in the oil return stage, described in the control device control First control valve and the 4th control valve are closed and second control valve and the 3rd control valve are opened.
- 2. air conditioner according to claim 1, it is characterised in that the liquid taking port is less than the liquid phase region in the evaporator Liquid level.
- 3. air conditioner according to claim 1, it is characterised in that first control valve is check valve or magnetic valve.
- 4. air conditioner according to claim 1, it is characterised in that second control valve is magnetic valve.
- 5. air conditioner according to claim 1, it is characterised in that the 3rd control valve is magnetic valve.
- 6. air conditioner according to claim 1, it is characterised in that the 4th control valve is magnetic valve.
- 7. air conditioner according to claim 1, it is characterised in that be additionally included in from the oil return opening to the compressor The check valve of one-way conduction on direction, the check valve are connected on the return line.
- 8. air conditioner according to claim 1, it is characterised in that liquid of the oil return opening higher than the oil sump of the compressor Face.
- 9. air conditioner according to claim 1, it is characterised in that the gas exhaust piping is connected to the exhaust outlet and described Between condenser, the return line is connected between the gas returning port and the evaporator.
- 10. according to the air conditioner any one of claim 1-9, it is characterised in that also including temperature sensor, the temperature Degree sensor is located on the fluid reservoir for detecting the temperature of the fluid reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510990276.3A CN105371532B (en) | 2015-12-24 | 2015-12-24 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510990276.3A CN105371532B (en) | 2015-12-24 | 2015-12-24 | Air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN105371532A CN105371532A (en) | 2016-03-02 |
| CN105371532B true CN105371532B (en) | 2018-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510990276.3A Active CN105371532B (en) | 2015-12-24 | 2015-12-24 | Air conditioner |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698271B (en) | 2016-04-01 | 2019-07-16 | 浙江嘉熙科技有限公司 | Thermoelectric heat pump type air conditioner |
| CN105805986A (en) * | 2016-04-27 | 2016-07-27 | 田幼华 | Heat pump system with auxiliary oil return |
| JP6829664B2 (en) * | 2017-07-10 | 2021-02-10 | 荏原冷熱システム株式会社 | Compressed refrigerator |
| CN107388664B (en) * | 2017-08-16 | 2019-12-03 | 广东美的暖通设备有限公司 | The control method of oil return valve, control device and air-conditioning system in air-conditioning system |
| CN108317759B (en) * | 2018-01-09 | 2020-06-30 | 重庆美的通用制冷设备有限公司 | Refrigerating unit |
| CN109442778B (en) * | 2018-11-30 | 2024-04-09 | 珠海格力电器股份有限公司 | Air Conditioning System |
| CN110986428B (en) * | 2019-12-18 | 2024-05-03 | 珠海格力电器股份有限公司 | Novel oil return system capable of purifying refrigerant, centrifugal unit and control method of novel oil return system |
| CN114811999B (en) * | 2022-05-24 | 2023-05-02 | 珠海格力电器股份有限公司 | Oil return system of dual-mode fluorine pump refrigerating device, control method of oil return system and machine room air conditioner |
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| JP2000088368A (en) * | 1998-09-14 | 2000-03-31 | Mitsubishi Electric Corp | Refrigerator |
| CN201335579Y (en) * | 2008-12-03 | 2009-10-28 | 广东美的电器股份有限公司 | Device for coolant purification and lubricating oil recovery |
| CN102230685A (en) * | 2011-06-08 | 2011-11-02 | 四川依米康环境科技股份有限公司 | Pump energy-saving air conditioning unit with double power sources and control method thereof |
| CN105066533A (en) * | 2015-08-12 | 2015-11-18 | 陈进 | Flash type oil purifying plant for centrifugal chiller |
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| JP2000088368A (en) * | 1998-09-14 | 2000-03-31 | Mitsubishi Electric Corp | Refrigerator |
| CN201335579Y (en) * | 2008-12-03 | 2009-10-28 | 广东美的电器股份有限公司 | Device for coolant purification and lubricating oil recovery |
| CN102230685A (en) * | 2011-06-08 | 2011-11-02 | 四川依米康环境科技股份有限公司 | Pump energy-saving air conditioning unit with double power sources and control method thereof |
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| CN105371532A (en) | 2016-03-02 |
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