CN105371532A - Air conditioner - Google Patents
Air conditioner Download PDFInfo
- Publication number
- CN105371532A CN105371532A CN201510990276.3A CN201510990276A CN105371532A CN 105371532 A CN105371532 A CN 105371532A CN 201510990276 A CN201510990276 A CN 201510990276A CN 105371532 A CN105371532 A CN 105371532A
- Authority
- CN
- China
- Prior art keywords
- control valve
- gas
- liquid
- air
- compressor
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- 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 invention discloses an air conditioner. The air conditioner comprises a compressor, an evaporator, a condenser, a liquid storage tank and a control device, wherein the compressor is provided with a gas discharge port and a gas return port; a first end of the evaporator is connected with the gas return port, and a first gas phase area and a liquid phase area below the first gas phase area are arranged in the evaporator; a first end of the condenser is connected with the gas discharge port, and a second gas phase area is arranged in the condenser; the liquid storage tank is provided with a liquid taking port, a gas outlet, a high pressure inlet and an oil return port, the liquid taking port is connected with the liquid phase area through a liquid taking pipeline, the oil return port is communicated with an oil tank of the compressor through an oil return pipeline, the high pressure inlet is communicated with the gas discharge port through a gas discharge pipeline to facilitate discharge of a high-temperature and high-pressure gaseous refrigerant into the liquid storage tank, and the gas outlet is communicated with the gas return port through a gas return pipeline. According to the air conditioner, continuous liquid taking can be realized, high-purity lubricant can be obtained, and a Venturi ejector is not needed.
Description
Technical field
The present invention relates to air-conditioning technical field, especially relate to a kind of air-conditioner.
Background technology
The general oil return system adopting Venturi transmission ejector and purification tank to form refrigeration unit in prior art.There is in Venturi transmission ejector very little aditus laryngis, easily led by foreign matters from being blocked and clear up difficulty after blocking, generally needing integral replacing, add cost.And the separating effect of this oil return system system to refrigerant and lubricating oil is not good, still has a large amount of refrigerants in the lubricating oil after purification, affect temperature and the viscosity of lubricating oil in compressor sump.In addition, liquid stage of getting of the oil return process of this oil return system, proposition stage and oil return stage carry out simultaneously, cannot control separately according to the oil return demand of refrigeration unit certain one-phase to oil return process.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, the present invention proposes a kind of air-conditioner, without the need to arranging Venturi transmission ejector, reduce clean difficulty and cost, and the separating effect of refrigerant and lubricating oil can be improved, obtain highly purified lubricating oil, but also can control separately getting liquid stage, purification phase and oil return stage easily.
Air-conditioner according to the embodiment of the present invention comprises: compressor, and described compressor has exhaust outlet and gas returning port, evaporimeter, the first end of described evaporimeter is connected with described gas returning port, has the first gas phase zone and be positioned at the liquid phase region below described first gas phase zone in described evaporimeter, condenser, the first end of described condenser is connected with described exhaust outlet, and the second end of described condenser is connected with the second end of described evaporimeter, has the second gas phase zone in described condenser, restricting element, described restricting element is connected between the second end of described condenser and the second end of described evaporimeter, fluid reservoir, described fluid reservoir has liquid taking port, gas outlet, high-pressure inlet and oil return opening, described liquid taking port is connected with described liquid phase region by liquid flowing tube road, described liquid flowing tube road is in series with the first control valve, described oil return opening is communicated with by the oil sump of return line with described compressor, described return line is in series with the second control valve, described high-pressure inlet to be communicated with the gaseous coolant to enter HTHP in described fluid reservoir by gas exhaust piping with described exhaust outlet, described gas exhaust piping is in series with the 3rd control valve, described gas outlet is communicated with described gas returning port by return line, described return line is in series with the 4th control valve, control device, described control device is connected to control described first control valve to described 4th control valve respectively and opens or cut out with described first control valve to described 4th control valve.
According to the air-conditioner of the embodiment of the present invention, by arranging liquid taking port on fluid reservoir, gas outlet, high-pressure inlet and oil return opening, and liquid taking port is connected with the liquid phase region of evaporimeter by liquid flowing tube road, oil return opening is communicated with the oil sump of compressor by return line, high-pressure inlet to be communicated with the gaseous coolant to enter HTHP in fluid reservoir by gas exhaust piping with exhaust outlet, gas outlet is communicated with gas returning port by return line, simultaneously on liquid flowing tube road, return line, gas exhaust piping and return line contact the first control valve respectively to the 4th control valve, and utilize control device to be connected to control the first control valve with the first control valve to the 4th control valve respectively to open to the 4th control valve or close, on the one hand can so that the mixture of refrigerant in liquid phase region and lubricating oil utilizes the self gravitation of the pressure reduction in evaporimeter and fluid reservoir and lubricating oil and refrigerant mixture to continue through liquid flowing tube road is back in fluid reservoir, thus realize getting liquid continuously, the pressure reduction in exhaust outlet and fluid reservoir is utilized on the other hand to flow in fluid reservoir with the refrigerant of the HTHP making exhaust outlet and discharge, not only can heat lubricating oil and refrigerant mixture, liquid refrigerants is vaporized, and discharge from gas outlet with separation of liquid refrigerant and lubricating oil, improve the separating effect of liquid refrigerants and lubricating oil, to obtain highly purified lubricating oil, but also can so that the lubricating oil after purification is pressed in compressor by the refrigerant of HTHP by force, without the need to arranging Venturi transmission ejector, avoid cleaning Venturi transmission ejector, maintenance and replacing, be conducive to reducing costs, can carry out accurately controlling separately according to oil return demand each stage to oil return process of air-conditioner easily simultaneously, whole oil return process, simple and reliable.
According to some embodiments of the present invention, described liquid taking port is lower than the liquid level of the liquid phase region in described evaporimeter.
According to some embodiments of the present invention, described first control valve is check valve or magnetic valve.
According to some embodiments of the present invention, described second control valve is magnetic valve.
According to some embodiments of the present invention, described 3rd control valve is magnetic valve.
According to some embodiments of the present invention, described 4th control valve is magnetic valve.
According to some embodiments of the present invention, air-conditioner is also included in the check valve from described oil return opening to one-way conduction the direction of described compressor, and described check valve is connected on described return line.
According to some embodiments of the present invention, described oil return opening is higher than the liquid level of the oil sump of described compressor.
According to some embodiments of the present invention, described gas exhaust piping is connected between described exhaust outlet and described condenser, and described return line is connected between described gas returning port and described evaporimeter.
According to some embodiments of the present invention, air-conditioner also comprises temperature sensor, and described temperature sensor is located on described fluid reservoir for the temperature detecting described fluid reservoir.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the air-conditioner according to the embodiment of the present invention.
Reference numeral:
Air-conditioner 100;
Compressor 1; Exhaust outlet a; Gas returning port b; Evaporimeter 2; Liquid phase region 21; First gas phase zone 22; Condenser 3; Second gas phase zone 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; Return line 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.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it will be appreciated that, term " on ", D score, "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward ", etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection or each other can communication; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
Describe the air-conditioner 100 according to the embodiment of the present invention below with reference to Fig. 1, may be used for adjusting indoor environment temperature.
As shown in Figure 1, compressor 1, evaporimeter 2, condenser 3, restricting element 11, fluid reservoir 4 and control device (not shown) can be comprised according to the air-conditioner 100 of the embodiment of the present invention.
Particularly, compressor 1 has exhaust outlet a and gas returning port b, and the refrigerant after heat exchange turns back to compressor 1 through gas returning port b, forms the refrigerant of HTHP, and discharge from exhaust outlet a after compressor 1 compresses.It should be noted that, the structure and working principle of compressor 1, known by those skilled in the art, is no longer described in detail herein.
The first end (such as, the upper end shown in Fig. 1) of evaporimeter 2 is connected with gas returning port b, and thus, the refrigerant in evaporimeter 2 after heat exchange can turn back to compressor 1 through the first end of evaporator 2 and gas returning port b.The liquid phase region 21 that there is in evaporimeter 2 first gas phase zone 22 and be positioned at below the first gas phase zone 22.Specifically, air-conditioner 100 is in long-term running, and a part of lubricating oil in compressor 1 can enter into refrigerant flow along with the circulation of refrigerant, and enters in evaporimeter 2.Gas in first gas phase zone 22 is gaseous coolant, and the liquid in liquid phase region 21 is the mixture of liquid refrigerants and lubricating oil.
The first end of condenser 3 (such as, upper end shown in Fig. 1) be connected with exhaust outlet a, second end of condenser 3 (such as, lower end shown in Fig. 1) with the second end of evaporimeter 2 (such as, lower end shown in Fig. 1) be connected, thus formation refrigerant flow, so that the circulation of refrigerant.Restricting element 11 is connected between the second end of condenser 3 and the second end of evaporimeter 2 to coolant throttle step-down.Condenser 3 has the second gas phase zone 31, and the gaseous coolant of the HTHP of discharging from the exhaust outlet a of compressor 1 enters into the second gas phase zone 31 of condenser 3.Wherein it should be noted that the refrigeration of air-conditioner 100 and heat principle and be well known to those skilled in the art no longer is 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 is connected with liquid phase region 21 by liquid flowing tube road 5, thus the mixture of the lubricating oil be convenient in the liquid phase region 21 of evaporimeter 2 and liquid refrigerants flows to fluid reservoir 4 through liquid flowing tube road 5.Liquid flowing tube road 5 is in series with the first control valve 51 to control the break-make on liquid flowing tube road 5, when the first control valve 51 is opened, liquid flowing tube road 5 conducting, when the first control valve 51 is closed, liquid flowing tube road 5 disconnects.Alternatively, the first control valve 51 is check valve 9 or magnetic valve, and structure is simple.Preferably, the first control valve 51 is magnetic valve, and not only structure is simple, reliable, and magnetic valve is quick on the draw.
Oil return opening f is communicated with the oil sump of compressor 1 by return line 6, thus, and can so that lubricating oil after the interior purification of fluid reservoir 4 flows to the oil sump of compressor 1 by return line 6.Return line 6 is in series with the second control valve 61 to control the break-make of return line 6.When the second control valve 61 is opened, return line 6 conducting, when the second control valve 61 is closed, return line 6 disconnects.Alternatively, the second control valve 61 is magnetic valve.Wherein, be understandable that, the oil sump of compressor 1 can be the fuel tank being positioned at compressor 1 inside or compressor 1 outside.
High-pressure inlet e to be communicated with the gaseous coolant to enter HTHP in fluid reservoir 4 by gas exhaust piping 7 with exhaust outlet a, thus, the mixture of gaseous coolant to the lubricating oil in fluid reservoir 4 and liquid refrigerants entering the HTHP in fluid reservoir 4 has strong heat effect, thus make liquid refrigerants heat absorption be vaporized into gaseous coolant, to realize being separated of liquid refrigerants and lubricating oil, improve the separating effect of liquid refrigerants and lubricating oil, obtain highly purified lubricating oil.Wherein, it should be noted that, being communicated with of gas exhaust piping 7 and exhaust outlet a can be directly be communicated with between gas exhaust piping 7 with exhaust outlet a that (namely one end of gas exhaust piping 7 is connected directly to exhaust outlet a) or the connection of pipeline that is communicated with exhaust outlet a of gas exhaust piping 7, such as, gas exhaust piping 7 be connected to exhaust outlet a and condenser 3 first end between or gas exhaust piping 7 be connected to the discharge chamber that the second gas phase zone 31 of condenser 3 or gas exhaust piping 7 are connected to compressor 1.
Gas exhaust piping 7 is in series with the break-make that the 3rd control valve the 71, three control valve 71 can control gas exhaust piping 7.When the 3rd control valve 71 is opened, gas exhaust piping 7 conducting, when the 3rd control valve 71 is closed, gas exhaust piping 7 disconnects.Alternatively, the 3rd control valve 71 can be magnetic valve, and structure is simple, reliable, and magnetic valve is quick on the draw.
Gas outlet d is communicated with gas returning port b by return line 86, and thus, the conducting of one side return line 86 can so that the mixture of lubricating oil in liquid phase region 21 and liquid refrigerants be back in fluid reservoir 4; Be blended on the other hand liquid refrigerants in lubricating oil heat vaporized by the refrigerant that is drained into the HTHP in fluid reservoir 4 in gas exhaust piping 7 after, by return line 8 together with the refrigerant of HTHP, turn back to compressor 1 through gas returning port b.
Wherein, it should be noted that, return line 8 is communicated with gas returning port b's, can be that return line 8 is communicated with (such as with the direct of gas returning port b, one end of return line 8 is connected directly to gas returning port b), such as, or the connection of other pipeline that return line 8 is communicated with gas returning port b, return line 8 is connected to the first gas phase zone 22 of pipeline between the first end of gas returning port b and evaporimeter 2 or evaporimeter 2.Return line 8 is in series with the 4th control valve 81 to control the break-make of return line 8.When the 4th control valve 81 is opened, return line 8 conducting, when the 4th control valve 81 is closed, return line 8 disconnects.Alternatively, the 4th control valve 81 can be magnetic valve, and structure is simple, reliable, and magnetic valve is quick on the draw.
Control device is connected to control the first control valve 51 respectively to the unlatching of the 4th control valve 81 or cut out with the first control valve 51 to the 4th control valve 81.
Specifically, the oil return process of air-conditioner 100 comprises liquid stage of getting, purification phase and oil return stage.
When the mixture of the certain lubricating oil of liquid phase region 21 inner accumulated of evaporimeter 2 and liquid refrigerants, control device controls the first control valve 51 and the 4th control valve 81 is opened, 3rd control valve 71 and the second control valve 61 are closed, because compressor 1 constantly works, gas returning port b place constantly has refrigerant to flow in compressor 1, therefore the pressure of gas returning port b is less than the pressure in evaporimeter 2, this makes pressure in the fluid reservoir 4 that is communicated with gas returning port b by gas outlet d and return line 8 lower than the pressure in evaporimeter 2, the gravity of the pressure differential in evaporimeter 2 and fluid reservoir 4 and lubricating oil and liquid refrigerants mixture self can be utilized thus to make the mixture continuous backflow of lubricating oil and liquid refrigerants in fluid reservoir 4, liquid is got in realization.When getting after liquid completes, control device controls the first control valve 51 and the second control valve 61 is closed, control the 3rd control valve 71 and the 4th control valve 81 is opened, utilize the pressure differential at fluid reservoir 4 and exhaust outlet a place, the gaseous coolant of the HTHP of discharging from exhaust outlet a is made to flow in fluid reservoir 4, to heat the mixture of lubricating oil and liquid refrigerants in fluid reservoir 4, make the liquid refrigerants heat absorption vaporization in mixture, and turn back to compressor 1 through gas outlet d, return line 8 and gas returning port b, realize being separated of liquid refrigerants and lubricating oil.After purification terminates, control device controls the first control valve 51, the 4th control valve 81 is closed, control the second control valve 61 and the 3rd control valve 71 is opened, utilize the pressure differential at fluid reservoir 4 and exhaust outlet a place, the refrigerant of the HTHP that exhaust outlet a is discharged enters in fluid reservoir 4, and by the lubricating oil after purifying in fluid reservoir 4, push back the oil sump of compressor 1 by force through oil return opening f, return line 6, without the need to arranging Venturi transmission ejector.
Wherein, the first control valve 51 is controlled to the 4th control valve 81 to realize getting liquid stage, the carrying out respectively of purification phase and oil return stage by control device, can so that control each stage of oil return process respectively according to the oil return demand of air-conditioner 100, so that each stage complete after just enter into the next stage, thus to realize getting liquid stage, accurately the controlling separately of purification phase and oil return stage.
Therefore, by above-mentioned setting, on the one hand can so that the mixture of refrigerant in liquid phase region 21 and lubricating oil utilizes the self gravitation of the mixture of the pressure reduction in evaporimeter 2 and fluid reservoir 4 and lubricating oil and refrigerant to continue through liquid flowing tube road 5 is back in fluid reservoir 4, thus realize getting liquid continuously, the pressure reduction in exhaust outlet a and fluid reservoir 4 is utilized on the other hand to flow in fluid reservoir 4 with the refrigerant of the HTHP making exhaust outlet a and discharge, not only can heat the mixture of lubricating oil and refrigerant, liquid refrigerants is vaporized, and discharge from gas outlet d with separation of liquid refrigerant and lubricating oil, improve the separating effect of liquid refrigerants and lubricating oil, to obtain highly purified lubricating oil, but also can so that the lubricating oil after purification is pressed in compressor 1 by the refrigerant of HTHP by force, without the need to arranging Venturi transmission ejector, avoid cleaning Venturi transmission ejector, maintenance and replacing, be conducive to reducing costs, can carry out accurately controlling separately to getting liquid stage, purification phase and oil return stage according to the oil return demand of air-conditioner 100 easily simultaneously, whole oil return process, simple and reliable.
According to the air-conditioner 100 of the embodiment of the present invention, by arranging liquid taking port c on fluid reservoir 4, gas outlet d, high-pressure inlet e and oil return opening f, and liquid taking port c is connected with the liquid phase region 21 of evaporimeter 2 by liquid flowing tube road 5, oil return opening f is communicated with the oil sump of compressor 1 by return line 6, high-pressure inlet e to be communicated with the gaseous coolant to enter HTHP in fluid reservoir 4 by gas exhaust piping 7 with exhaust outlet a, gas outlet d is communicated with gas returning port b by return line 8, simultaneously on liquid flowing tube road 5, return line 6, gas exhaust piping 7 and return line 8 to be contacted respectively the first control valve 51 to the four control valve 81, and utilize control device to be connected to control the first control valve 51 with the first control valve 51 to the 4th control valve 81 respectively to open to the 4th control valve 81 or close, on the one hand can so that the mixture of refrigerant in liquid phase region 21 and lubricating oil utilizes the self gravitation of the pressure reduction in evaporimeter 2 and fluid reservoir 4 and lubricating oil and refrigerant mixture to continue through liquid flowing tube road 5 is back in fluid reservoir 4, thus realize getting liquid continuously, the pressure reduction in exhaust outlet a and fluid reservoir 4 is utilized on the other hand to flow in fluid reservoir 4 with the refrigerant of the HTHP making exhaust outlet a and discharge, not only can heat lubricating oil and refrigerant mixture, liquid refrigerants is vaporized, and discharge from gas outlet d with separation of liquid refrigerant and lubricating oil, improve the separating effect of liquid refrigerants and lubricating oil, to obtain highly purified lubricating oil, but also can so that the lubricating oil after purification is pressed in compressor 1 by the refrigerant of HTHP by force, without the need to arranging Venturi transmission ejector, avoid cleaning Venturi transmission ejector, maintenance and replacing, be conducive to reducing costs, can carry out accurately controlling separately according to oil return demand each stage to oil return process of air-conditioner 100 easily simultaneously, whole oil return process, simple and reliable.
According to some embodiments of the present invention, liquid taking port c is lower than the liquid level of the liquid phase region 21 in evaporimeter 2, thus the mixture of the lubricating oil be convenient in liquid phase region 21 and liquid refrigerants utilizes self gravitation to continue through liquid flowing tube road 5 is back in fluid reservoir 4.
In some embodiments of the invention, air-conditioner 100 also comprises the check valve 9 from oil return opening f to one-way conduction the direction of compressor 1, check valve 9 is connected on return line 6, thus ensure that the lubricating oil after purifying in fluid reservoir 4 can, from fluid reservoir 4 one-way flow to the oil sump of compressor 1, avoid lubricating oil to flow backwards.
In some embodiments of the invention, during the liquid level of oil return opening f higher than the oil sump of compressor 1, lubricating oil can be avoided thus to blow back in fluid reservoir 4 from the oil sump of compressor 1.Be understandable that, when the liquid level of oil return opening f higher than compressor 1, even if air-conditioner 100 does not arrange above-mentioned check valve 9, lubricating oil also can be avoided to flow backwards.
Certainly, in further embodiments, such as when the second control valve 61 reliable operation, No leakage, or during the sump liquid level of one end hydraulic fluid port be communicated with the oil sump of compressor 1 of return line 6 all the time higher than compressor 1, even if air-conditioner 100 does not arrange check valve 9, do not require that oil return opening f is higher than the liquid level of the oil sump of compressor 1, also can prevent lubricating oil from flowing backwards.
In some embodiments of the invention, gas exhaust piping 7 is connected between exhaust outlet a and condenser 3, and return line 8 is connected between oil return opening f and evaporimeter 2, and structure is simple, facilitates direct labor to assemble.
According to some embodiments of the present invention, air-conditioner 100 also comprises temperature sensor 10, temperature sensor 10 is located at for the temperature detecting fluid reservoir 4 on fluid reservoir 4, thus judges the performance of purification phase in oil return process according to the temperature value that temperature sensor 10 detects.Specifically, in the process of purification phase, temperature sensor 10 continues the temperature detecting fluid reservoir 4, when temperature sensor 10 detects that obviously rising appears in the temperature of fluid reservoir 4, then judges that purification phase completes.
Certainly, in other embodiments, the performance of purification phase can also judge according to the time preset.Such as, when getting after the liquid stage completes, control device controls the first control valve 51 and the second control valve 61 is closed, control the 3rd control valve 71 and the 4th control valve 81 to open to start to purify, time now by timer, when after lasting purification T1 minute, then think that purification phase completes, thus avoid the setting of temperature sensor 10.
Or in further embodiments, the performance of purification phase can also be judged jointly by temperature sensor 10 and the time preset.Such as, when getting after the liquid stage completes, device processed controls the first control valve 51 and the second control valve 61 is closed, control the 3rd control valve 71 and the 4th control valve 81 to open to start to purify, during by timer, when after lasting purification T2 minute, if significantly rising appears in the temperature value that temperature sensor 10 detects, then think that purification phase completes; If the situation that temperature value obviously rises does not appear in temperature sensor 10, then continue purification T3 minute, thus ensure carrying out smoothly of purification process, highly purified lubricating oil of purifying out can also be ensured simultaneously.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (10)
1. an air-conditioner, is characterized in that, comprising:
Compressor, described compressor has exhaust outlet and gas returning port;
Evaporimeter, the first end of described evaporimeter is connected with described gas returning port, has the first gas phase zone and be positioned at the liquid phase region below described first gas phase zone in described evaporimeter;
Condenser, the first end of described condenser is connected with described exhaust outlet, and the second end of described condenser is connected with the second end of described evaporimeter, has the second gas phase zone in described condenser;
Restricting element, described restricting element is connected between the second end of described condenser and the second end of described evaporimeter;
Fluid reservoir, described fluid reservoir has liquid taking port, gas outlet, high-pressure inlet and oil return opening, described liquid taking port is connected with described liquid phase region by liquid flowing tube road, described liquid flowing tube road is in series with the first control valve, described oil return opening is communicated with by the oil sump of return line with described compressor, described return line is in series with the second control valve, described high-pressure inlet to be communicated with the gaseous coolant to enter HTHP in described fluid reservoir by gas exhaust piping with described exhaust outlet, described gas exhaust piping is in series with the 3rd control valve, described gas outlet is communicated with described gas returning port by return line, described return line is in series with the 4th control valve,
Control device, described control device is connected to control described first control valve to described 4th control valve respectively and opens or cut out with described first control valve to described 4th control valve.
2. air-conditioner according to claim 1, is characterized in that, described liquid taking port is lower than the liquid level of the liquid phase region in described evaporimeter.
3. air-conditioner according to claim 1, is characterized in that, described first control valve is check valve or magnetic valve.
4. air-conditioner according to claim 1, is characterized in that, described second control valve is magnetic valve.
5. air-conditioner according to claim 1, is characterized in that, described 3rd control valve is magnetic valve.
6. air-conditioner according to claim 1, is characterized in that, described 4th control valve is magnetic valve.
7. air-conditioner according to claim 1, is characterized in that, be also included in the check valve from described oil return opening to one-way conduction the direction of described compressor, described check valve is connected on described return line.
8. air-conditioner according to claim 1, is characterized in that, described oil return opening is higher than the liquid level of the oil sump of described compressor.
9. air-conditioner according to claim 1, is characterized in that, described gas exhaust piping is connected between described exhaust outlet and described condenser, and described return line is connected between described gas returning port and described evaporimeter.
10. the air-conditioner according to any one of claim 1-9, is characterized in that, also comprises temperature sensor, and described temperature sensor is located on described fluid reservoir for the temperature detecting described 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105371532A true CN105371532A (en) | 2016-03-02 |
| CN105371532B CN105371532B (en) | 2018-04-06 |
Family
ID=55373958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510990276.3A Active CN105371532B (en) | 2015-12-24 | 2015-12-24 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105371532B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805986A (en) * | 2016-04-27 | 2016-07-27 | 田幼华 | Heat pump system with auxiliary oil return |
| WO2017166394A1 (en) * | 2016-04-01 | 2017-10-05 | 浙江嘉熙科技有限公司 | Thermoelectric heat pump type air conditioner |
| CN107388664A (en) * | 2017-08-16 | 2017-11-24 | 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 |
| CN108317759A (en) * | 2018-01-09 | 2018-07-24 | 重庆美的通用制冷设备有限公司 | Refrigeration unit |
| CN109237829A (en) * | 2017-07-10 | 2019-01-18 | 荏原冷热系统株式会社 | Compression refrigerating machine |
| CN109442778A (en) * | 2018-11-30 | 2019-03-08 | 珠海格力电器股份有限公司 | Air-conditioning system |
| CN114811999A (en) * | 2022-05-24 | 2022-07-29 | 珠海格力电器股份有限公司 | Oil return system of double-mode fluorine pump refrigerating device, control method of oil return system and machine room air conditioner |
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2015
- 2015-12-24 CN CN201510990276.3A patent/CN105371532B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017166394A1 (en) * | 2016-04-01 | 2017-10-05 | 浙江嘉熙科技有限公司 | Thermoelectric heat pump type air conditioner |
| US10571163B2 (en) | 2016-04-01 | 2020-02-25 | Zhejiang Jiaxi Optoelectronic Equipment Manufacturing Co., Ltd. | Thermoelectric heat pump type air conditioner |
| CN105805986A (en) * | 2016-04-27 | 2016-07-27 | 田幼华 | Heat pump system with auxiliary oil return |
| CN109237829A (en) * | 2017-07-10 | 2019-01-18 | 荏原冷热系统株式会社 | Compression refrigerating machine |
| CN107388664A (en) * | 2017-08-16 | 2017-11-24 | 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 |
| 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 |
| CN108317759A (en) * | 2018-01-09 | 2018-07-24 | 重庆美的通用制冷设备有限公司 | Refrigeration unit |
| CN109442778A (en) * | 2018-11-30 | 2019-03-08 | 珠海格力电器股份有限公司 | Air-conditioning system |
| 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 |
| CN114811999A (en) * | 2022-05-24 | 2022-07-29 | 珠海格力电器股份有限公司 | Oil return system of double-mode fluorine pump refrigerating device, control method of oil return system and machine room air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105371532B (en) | 2018-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105371532A (en) | Air conditioner | |
| CN103604241B (en) | Air-conditioner and control method thereof | |
| US9587865B2 (en) | Air conditioner and method for controlling the same | |
| CN104285111A (en) | Freezer | |
| CN104006584B (en) | Three control air-conditionings and its refrigerant flow to switching device | |
| CN104285110B (en) | Refrigerating plant | |
| CN100439809C (en) | Compensating system and compensating control method for compressor | |
| CN106766431B (en) | Oil content system and air conditioning system | |
| CN204176743U (en) | Air-conditioning system | |
| CN203980733U (en) | Air-conditioning system | |
| CN202432744U (en) | Air-supply enthalpy-adding air conditioning system and air conditioner | |
| CN201335579Y (en) | Device for coolant purification and lubricating oil recovery | |
| CN203980699U (en) | Air-conditioning system | |
| CN109489294B (en) | Multifunctional oil content device with system enthalpy increasing function and heat pump system thereof | |
| CN208738603U (en) | A kind of dual temperature water cooling unit for laser | |
| CN204665752U (en) | Air-conditioning system | |
| CN105299947A (en) | Air-conditioning system | |
| CN110220322A (en) | Energy saving ultralow temperature precision temperature control heat-exchange system | |
| CN203518362U (en) | Heat pump air-conditioning system and automobile with same | |
| CN104896808A (en) | Multiple-online system | |
| CN102200357B (en) | Absorption refrigerator | |
| CN104634000A (en) | Heat exchanger assembly, heat exchange system and air conditioner | |
| CN105222420A (en) | Air-conditioning system | |
| CN203980702U (en) | Air-conditioning system | |
| CN209386601U (en) | A kind of low temperature air conditioner 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |