CN110940119B - Refrigerant circulation system and air conditioner under refrigeration mode - Google Patents
Refrigerant circulation system and air conditioner under refrigeration mode Download PDFInfo
- Publication number
- CN110940119B CN110940119B CN201911295999.6A CN201911295999A CN110940119B CN 110940119 B CN110940119 B CN 110940119B CN 201911295999 A CN201911295999 A CN 201911295999A CN 110940119 B CN110940119 B CN 110940119B
- Authority
- CN
- China
- Prior art keywords
- pipeline
- refrigerant
- hot gas
- liquid
- liquid separator
- 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.)
- Active
Links
Images
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
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line 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
- F25B45/00—Arrangements for charging or discharging 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention provides a refrigerant circulating system and an air conditioner under a refrigeration mode, wherein the refrigerant circulating system under the refrigeration mode comprises a main pipeline which is used for connecting a compressor, a condenser, a throttling component and an evaporator; a regulating pipeline communicated with the main pipeline; the replaceable hot gas-liquid separator is communicated with the adjusting pipeline; the replaceable hot gas-liquid separator is suitable for recycling liquid refrigerants in the main pipeline or supplementing gaseous refrigerants to the main pipeline through the adjusting pipeline. The invention can store the refrigerant in the replaceable hot gas-liquid separator in advance, and after-sales professionals are not needed to supplement the refrigerant quantity needed by the ultra-long connecting pipe from the outside before the air conditioning unit is debugged and started, thereby improving the installation and debugging efficiency; in addition, the replaceable hot gas-liquid separator has the functions of liquid storage and air supplement, so that the unit can automatically adjust the amount of the refrigerant in the normal operation process of refrigerating an extremely severe environment, the refrigerating effect is improved, and the system reliability is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a refrigerant circulating system in a refrigeration mode and an air conditioner.
Background
The outgoing liquid amount of the air conditioning unit is generally filled with refrigerant according to the requirement of the national standard pipe length, the national standard pipe length is generally 5m or 7.5m, but an ultra-long connecting pipe of 30-50m generally exists on the engineering installation site of the air conditioner, and in order to ensure the operation effect and reliability of the unit, after-sales installation personnel need to supplement liquid from an external refrigerant tank when installing the ultra-long connecting pipe on the spot; in addition, in the normal refrigeration operation process of the unit, the conventional refrigerant circulating system cannot automatically adjust the refrigerant filling amount, and the adjustability is poor.
Disclosure of Invention
The invention solves the problem that when the existing refrigerant circulating system is used for installing and debugging the ultra-long connecting pipe, the refrigerant needs to be supplemented from the outside, and the refrigerant charging amount can not be automatically adjusted and corrected in the operation process of a refrigeration mode, so that the adjustable refrigeration effect and the service life are influenced.
To solve at least one of the above problems, the present invention provides a refrigerant cycle system in a cooling mode, including:
the main pipeline is used for connecting the compressor, the condenser, the throttling component and the evaporator;
a regulating pipeline communicated with the main pipeline;
the replaceable hot gas-liquid separator is communicated with the adjusting pipeline;
the replaceable hot gas-liquid separator is suitable for recycling liquid refrigerants in the main pipeline or supplementing gaseous refrigerants to the main pipeline through the adjusting pipeline.
Therefore, a proper amount of refrigerants can be stored in the replaceable hot gas-liquid separator in advance, and after-sales professionals are not needed to supplement the amount of the refrigerants required by the ultra-long connecting pipe from the outside before the air conditioning unit is debugged and started, so that the installation and debugging efficiency is improved; in addition, the replaceable hot gas-liquid separator has the functions of liquid storage and air supplement, so that the air conditioning unit can automatically adjust the amount of refrigerants in the normal refrigeration extremely severe environment operation process, the refrigeration effect is improved, and the system reliability is improved.
Further, interchangeable vapour and liquid separator includes the reservoir, be provided with the inner chamber cylinder body in the reservoir, the inner chamber rigid body is used for storing the refrigerant, be provided with thin wall heat transfer coil and lower thin wall heat transfer coil on the outer wall of inner chamber cylinder body.
Therefore, the replaceable hot gas-liquid separator not only has the function of storing refrigerants, but also has the function of gas-liquid separation, and the purposes of liquid storage and air supplement of the replaceable hot gas-liquid separator are achieved through the heat exchange function between the refrigerants flowing through the upper thin-wall heat exchange coil and the refrigerants stored in the liquid storage device.
Further, an air outlet and a liquid inlet are arranged at the top of the liquid storage device, the air outlet and the liquid inlet are communicated with the inner cavity cylinder body, a first inlet end and a first outlet end which are communicated with each other are arranged on the upper thin-wall heat exchange coil, and a second inlet end and a second outlet end which are communicated with each other are arranged on the lower thin-wall heat exchange coil.
From this, high temperature refrigerant and low temperature refrigerant among the heat transfer coil are independent separately, through the cooperation of heat transfer coil and inner chamber cylinder body, realize cold or hot-fluid to the inside refrigerant cooling of reservoir or heating, reduce or improve the inside refrigerant pressure of reservoir to make interchangeable vapour and liquid separator have the function of liquid storage or external gassing.
Further, the main pipeline comprises a first pipeline and a second pipeline, the first pipeline is connected between the condenser and the throttling component, and the second pipeline is connected between the compressor return air port and the evaporator; the adjusting pipeline comprises an air supplementing pipeline and a liquid storage pipeline, the air supplementing pipeline is connected between the first pipeline and the air outlet, and a third electromagnetic valve is arranged on the air supplementing pipeline; the liquid storage pipeline is connected between the second pipeline and the liquid inlet, and a fourth electromagnetic valve is arranged on the liquid storage pipeline.
Therefore, the function of supplementing the refrigerant of the interchangeable hot gas-liquid separator is realized through the matching of the air supplementing pipeline and the third electromagnetic valve, and the function of recovering the redundant refrigerant by the interchangeable hot gas-liquid separator is realized through the matching of the liquid storage pipeline and the fourth electromagnetic valve.
Further, the adjusting pipeline further comprises a pressurizing pipeline, the pressurizing pipeline is connected between the compressor exhaust port and the second inlet end of the gas-liquid separator, and a first electromagnetic valve is arranged on the pressurizing pipeline.
From this, through setting up the pressure boost pipeline, can increase the pressure in the interchangeable vapour and liquid separator by a wide margin, the refrigerant of being convenient for is mended by interchangeable vapour and liquid separator and gets into the compressor return-air inlet to increase the gaseous state refrigerant volume in the compressor fast, guarantee that refrigerant volume is the best refrigerant volume among the refrigerant circulation system, improve air conditioning unit's refrigeration effect.
Furthermore, the adjusting pipeline further comprises a second branch, and two ends of the second branch are respectively connected with the second outlet end of the replaceable hot gas-liquid separator and the second pipeline.
From this, through setting up the second branch road for the high temperature high pressure gaseous state refrigerant that comes out from the compressor gas vent gets into throttling component through two routes side by side, and the cooperation pressure boost pipeline not only can increase interchangeable vapour and liquid separator internal pressure, still has the effect of condensation refrigerant, does not influence refrigerant circulation system's normal operating.
Further, still include the flash tank, the regulation pipeline still includes the step-down pipeline, the one end of flash tank is passed through the step-down pipeline with interchangeable hot gas-liquid separator's first entrance point is connected, the other end setting of flash tank is in the condenser with on the pipeline between the evaporimeter.
Therefore, the pressure in the replaceable hot gas-liquid separator can be reduced by arranging the flash evaporator and the pressure reduction pipeline, redundant refrigerants in the main pipeline can be conveniently stored in the replaceable hot gas-liquid separator, the refrigerant quantity in the refrigerant circulating system is ensured to be the optimal refrigerant quantity, and the refrigerating effect of the air conditioning unit is improved.
And furthermore, a second electromagnetic valve is arranged on the pressure reducing pipeline and used for controlling whether the flash steam in the flash tank enters the replaceable hot gas-liquid separator or not.
Thus, the pressure inside the interchangeable hot gas-liquid separator is adjusted by controlling the opening and closing of the second electromagnetic valve.
Furthermore, the adjusting pipeline further comprises a first branch, and two ends of the first branch are respectively connected with the first outlet end of the replaceable hot gas-liquid separator and the first pipeline.
From this, through setting up first branch road for low temperature low pressure liquid refrigerant after the throttling of follow throttling component gets into the compressor through two routes side by side, cooperates the step-down pipeline, when realizing reducing interchangeable vapour and liquid separator pressure, still has the effect of evaporation refrigerant, does not influence refrigerant circulation system's normal operating.
Furthermore, the throttling component comprises a primary throttling component and a secondary throttling component which are sequentially arranged along the flow direction of the refrigerant, and the flash tank is arranged on a pipeline between the primary throttling component and the secondary throttling component.
Therefore, the arrangement of the two stages of throttling components is beneficial to improving the stability of the system, and the phenomenon that the normal operation of the system is influenced due to the sudden reduction of the pipeline pressure is prevented; in addition, the refrigerant after primary throttling enters the flash evaporator, and pressure reduction and evaporation are easier to realize.
The invention also provides an air conditioner, which comprises the refrigerant circulating system in the refrigeration mode.
Compared with the prior art, the improved air conditioner has the same beneficial effects as the refrigerant circulating system in the refrigeration mode, and the description is omitted here.
Drawings
Fig. 1 is a schematic structural view of a refrigerant circulation system in a refrigeration mode according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an alternate hot gas liquid separator according to an embodiment of the present invention;
FIG. 3 is a refrigerant supplementary flow diagram of the refrigerant cycle system in the cooling mode according to the embodiment of the present invention;
fig. 4 is a refrigerant storage flow diagram of the refrigerant cycle system in the cooling mode according to the embodiment of the invention.
Description of reference numerals:
1-a compressor; 2-a condenser; 3-an evaporator; 4-replaceable hot gas-liquid separator; 5-a flash tank; 6-a first overlength connecting pipe; 7-a second overlength connecting pipe; 8-a primary throttling component; 9-a secondary throttling component; 10-a first solenoid valve; 11-a second solenoid valve; 12-a third solenoid valve; 13-a fourth solenoid valve;
41-inner cavity cylinder body; 42-upper thin-wall heat exchange coil; 43-lower thin-wall heat exchange coil; 44-air outlet; 45-liquid inlet; 46-a first outlet end; 47-a first inlet port; 48-a second inlet end; 49-second outlet end.
Detailed Description
The air conditioning unit sometimes can be used for installing in the application scene of overlength connecting pipe, and the liquid measure after the installation of overlength connecting pipe can't be satisfied to the liquid measure that the air conditioning unit leaves the factory this moment, need follow outside refrigerant jar replenishment liquid measure when after-sales installation. In addition, in the conventional operation process of the unit, the conventional refrigerant circulating system lacks a good automatic refrigerant quantity adjusting mechanism, so that the refrigerant quantity in the air conditioning unit is deviated from the optimal refrigerant quantity, the air conditioning unit cannot operate in the optimal state, and the refrigerating or heating effect of the air conditioner is influenced.
In order to solve the problems, the invention provides a method and a device for adjusting the amount of refrigerant in the operation process of an air conditioner. The automatic adjustment of the refrigerant quantity can be carried out in the refrigeration and/or heating modes of the air conditioner, and the pipeline setting and the control method of the refrigerant circulating system of the air conditioner are different in different modes. The invention provides a refrigerant circulating system capable of adjusting the amount of refrigerant in an air-conditioning refrigeration mode, which aims to solve the problem that the amount of refrigerant cannot be automatically adjusted.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, an embodiment of the invention provides a refrigerant circulation system in a refrigeration mode, including:
the main pipeline is used for connecting the compressor 1, the condenser 2, the throttling component and the evaporator 3;
the adjusting pipeline is communicated with the main pipeline;
the replaceable hot gas-liquid separator 4 is communicated with the regulating pipeline;
the replaceable hot gas-liquid separator 4 stores a refrigerant therein, and the replaceable hot gas-liquid separator 4 is suitable for recovering a liquid refrigerant in the main pipeline or supplementing a gaseous refrigerant to the main pipeline through a regulating pipeline.
In the embodiment, the adjusting pipeline and the replaceable hot gas-liquid separator 4 are arranged on the main pipeline, on one hand, the replaceable hot gas-liquid separator 4 has the function of storing the refrigerant, and if the overlong connecting pipe is arranged in the main pipeline, a proper amount of refrigerant can be filled in the replaceable hot gas-liquid separator 4 in advance according to the design requirement of the overlong connecting pipe; on the other hand, the air-liquid separation function is achieved, the adjustment pipeline is matched, so that the refrigerant circulation system converts liquid refrigerants stored in the replaceable hot gas-liquid separator 4 into gaseous refrigerants through the adjustment pipeline and then supplies the gaseous refrigerants to the main pipeline, the requirement for the refrigerant quantity during normal operation of the air conditioning unit is met, or redundant liquid refrigerants in the main pipeline are recovered to enter the replaceable hot gas-liquid separator 4, the redundant refrigerants are recovered to be discharged to enter the compressor 1, liquid impact damage is caused to the compressor 1, the refrigerant quantity is automatically adjusted in the refrigerating operation process of the unit, the problem that the refrigerant filling quantity is automatically adjusted and corrected in the refrigerating mode operation process of the air conditioning unit is solved, and the refrigerating effect and the service life of the air conditioner are improved.
In most practical application scenarios, an ultra-long connecting pipe is also connected in the main pipeline to meet the actual installation requirements. The main line comprises a second line connected between the condenser 2 and the throttling member and a first line connected between the return port of the compressor 1 and the evaporator 3. The super-long connecting pipe comprises a first super-long connecting pipe 6 arranged between the throttling part and the evaporator 3 and a second super-long connecting pipe 7 arranged between the evaporator 3 and the compressor 1, liquid refrigerants flow in the first super-long connecting pipe 6, and gaseous refrigerants flow in the second super-long connecting pipe 7.
Preferably, as shown in fig. 2, the hot-gas-liquid exchangeable separator 4 includes a liquid reservoir, an inner cavity cylinder 41 is disposed in the liquid reservoir, the inner cavity rigid body is used for storing a refrigerant, an air outlet 44 and a liquid inlet 45 are disposed at the top of the liquid reservoir, and both the air outlet 44 and the liquid inlet 45 are communicated with the inner cavity cylinder 41. The outer wall of the inner cavity cylinder 41 is provided with two heat exchange coils which are separated up and down, namely an upper thin-wall heat exchange coil 42 and a lower thin-wall heat exchange coil 43, the upper thin-wall heat exchange coil 42 is provided with a first inlet end 47 and a first outlet end 46, the first inlet end 47 is communicated with the first outlet end 46, the lower thin-wall heat exchange coil 43 is provided with a second inlet end 48 and a second outlet end 49, and the second inlet end 48 is communicated with the second outlet end 49.
Optionally, the adjusting pipeline includes an air supply pipeline and a liquid storage pipeline, the air supply pipeline is connected between the first pipeline and the air outlet 44 of the replaceable hot gas-liquid separator 4, a third electromagnetic valve 12 is arranged on the air supply pipeline, and the third electromagnetic valve 12 is used for controlling whether the gaseous refrigerant in the replaceable hot gas-liquid separator 4 is supplied into the main pipeline. The liquid storage pipeline is connected between the second pipeline and a liquid inlet 45 of the replaceable hot gas-liquid separator 4, a fourth electromagnetic valve 13 is arranged on the liquid storage pipeline, and the fourth electromagnetic valve 13 is used for controlling whether liquid refrigerants in the main pipeline are recovered to enter the replaceable hot gas-liquid separator 4 or not.
Thus, when the refrigerant quantity in the refrigerant circulating system is excessive, a part of the refrigerant flowing out of the outlet of the condenser 2 enters the replaceable hot gas-liquid separator 4 through the liquid storage pipeline for storage. When the quantity of the refrigerant in the refrigerant circulating system is insufficient, the liquid refrigerant in the interchangeable hot gas-liquid separator 4 is changed into a gaseous refrigerant after heat exchange, the gaseous refrigerant enters the return air port of the compressor 1 through the air supply pipeline, and the gaseous refrigerant is compressed and then is supplemented to enter the main pipeline.
Optionally, the adjusting pipeline further includes a pressure increasing pipeline, the pressure increasing pipeline is connected between the air outlet of the compressor 1 and the second inlet end 48 of the gas-liquid separator, the pressure increasing pipeline is provided with a first electromagnetic valve 10, and the first electromagnetic valve 10 is used for controlling whether the high-temperature high-pressure gaseous refrigerant compressed by the compressor 1 partially enters the exchangeable gas-liquid separator 4 so as to exchange heat with the liquid refrigerant in the exchangeable gas-liquid separator 4.
In some embodiments, as shown in fig. 3, when the refrigerant volume in the refrigerant circulation system is insufficient and a gaseous refrigerant needs to be supplemented into the main pipeline, the first electromagnetic valve 10 and the third electromagnetic valve 12 are opened, the fourth electromagnetic valve 13 is closed, the compressed high-temperature and high-pressure gaseous refrigerant enters the lower thin-wall heat exchange coil 43 of the interchangeable hot gas-liquid separator 4 through the pressurization pipeline, on one hand, the pressure in the interchangeable hot gas-liquid separator 4 is increased, on the other hand, the compressed high-temperature and high-pressure gaseous refrigerant exchanges heat with the liquid refrigerant stored in the inner cavity cylinder 41 of the interchangeable hot gas-liquid separator, and on the other hand, the liquid refrigerant in the inner cavity cylinder 41 absorbs heat and is gasified to become the gaseous refrigerant. Because the pressure in the interchangeable hot gas-liquid separator 4 is greatly increased, the gaseous refrigerant after heat exchange is discharged from the gas outlet 44 of the interchangeable hot gas-liquid separator 4 and enters the gas supplementing pipeline and the gas return port of the compressor 1, the gaseous refrigerant quantity in the compressor 1 is rapidly increased, the refrigerant quantity in the refrigerant circulating system is ensured to be the best refrigerant quantity, and the refrigeration effect of the air conditioning unit is improved.
It should be emphasized that the present embodiment adopts a mode of supplementing the gaseous refrigerant to the compressor 1, and has the effect of reducing the exhaust temperature of the compressor 1 in addition to the function of supplementing the refrigerant.
Optionally, the adjusting pipeline further comprises a second branch, and two ends of the second branch are respectively connected with the second outlet end 49 of the replaceable hot gas-liquid separator 4 and the second pipeline. Specifically, the high-temperature and high-pressure gaseous refrigerant coming out of the exhaust port of the compressor 1 is discharged from the second outlet end 49 of the interchangeable hot gas-liquid separator 4 after being subjected to heat exchange by the interchangeable hot gas-liquid separator 4, and the second outlet end 49 of the interchangeable hot gas-liquid separator 4 is communicated with the second pipeline through a second branch. For convenience of description, if the gas discharge port of the compressor 1, the condenser 2, the second pipeline and the pipeline connected therebetween are the first condensing pipeline. Then by compressor 1 gas vent, the pressure boost pipeline, interchangeable vapour and liquid separator 4, the second branch road and connect the pipeline between them and be the second condensation pipeline, the second condensation pipeline connects in parallel in first condensation pipeline, make the high temperature high pressure gaseous state refrigerant that comes out from compressor 1 gas vent get into the throttle part through two routes (be first condensation pipeline and second condensation pipeline respectively), so, the pressure boost pipeline cooperates with the second branch road, when realizing increasing interchangeable vapour and liquid separator 4 pressure, still have the effect of condensation refrigerant, do not influence refrigerant circulation system's normal operating.
Optionally, the refrigerant circulation system further includes a flash evaporator 5 in the refrigeration mode, the adjusting pipeline further includes a pressure reducing pipeline, one end of the flash evaporator 5 is connected to the first inlet end 47 of the replaceable hot gas-liquid separator 4 through the pressure reducing pipeline, and the other end of the flash evaporator 5 is disposed on the pipeline between the condenser 2 and the evaporator 3. Specifically, the flash tank 5 has three interfaces, which are a first interface disposed at one end of the flash tank 5, and a second interface and a third interface disposed at the other end of the flash tank 5, respectively, the first interface is a refrigerant outlet, the first interface is connected to the depressurization pipeline, the second interface and the third interface are disposed on the pipeline between the condenser 2 and the evaporator 3, and the second interface and the third interface are connected to the pipeline on one side of each of the second interface and the third interface, respectively.
Preferably, a second electromagnetic valve 11 is arranged on the pressure reducing pipeline, and the second electromagnetic valve 11 is used for controlling whether the flash steam in the flash tank 5 enters the replaceable hot gas-liquid separator 4.
In some embodiments, as shown in fig. 4, when the refrigerant amount in the refrigerant circulation system is too much and a part of the refrigerant in the main pipeline needs to be stored, the second electromagnetic valve 11 and the fourth electromagnetic valve 13 are opened, the first electromagnetic valve 10 and the third electromagnetic valve 12 are closed, the low-temperature steam flashed by the flash evaporator 5 enters the pressure reduction pipeline through the first interface and then enters the upper thin-wall heat exchange coil 42 of the interchangeable hot gas-liquid separator 4, the interchangeable hot gas-liquid separator 4 is cooled and depressurized, and therefore the redundant refrigerant in the main pipeline can be stored in the interchangeable hot gas-liquid separator 4 through the liquid storage pipeline, and the problem of the too much refrigerant amount of the air conditioning unit is solved.
Optionally, the adjusting pipeline further comprises a first branch, and two ends of the first branch are respectively connected with the first outlet end 46 of the replaceable hot gas-liquid separator 4 and the first pipeline. Specifically, the low-temperature refrigerant coming out of the refrigerant outlet of the flash evaporator 5 is discharged from the first outlet end 46 of the interchangeable hot gas-liquid separator 4 after being subjected to heat exchange by the interchangeable hot gas-liquid separator 4, and the first outlet end 46 of the interchangeable hot gas-liquid separator 4 is communicated with the first pipeline through a first branch. For convenience of description, if the flash evaporator 5, the first overlong connecting pipe 6, the evaporator 3, the second overlong connecting pipe 7, the first pipeline and the pipeline connected therebetween are the first evaporation pipeline, the flash evaporator 5, the pressure reduction pipeline, the interchangeable hot gas-liquid separator 4, the first branch and the pipeline connected therebetween are the second evaporation pipeline, and the second evaporation pipeline is connected in parallel with the first evaporation pipeline, so that the low-temperature and low-pressure liquid refrigerant throttled by the throttling component enters the compressor 1 through two paths (the first evaporation pipeline and the second evaporation pipeline respectively), and thus, the pressure reduction pipeline is matched with the first branch, the pressure of the interchangeable hot gas-liquid separator 4 is reduced, and meanwhile, the refrigerant evaporation function is achieved, and the normal operation of a refrigerant circulation system is not affected.
Preferably, the throttling component comprises a first-stage throttling component 8 and a second-stage throttling component 9 which are sequentially arranged along the flow direction of the refrigerant, the low-temperature high-pressure liquid refrigerant coming out of the condenser 2 is changed into a low-temperature low-pressure liquid refrigerant to enter the evaporator 3 after being primarily throttled and throttled again, and the two-stage throttling component is arranged to help improve the stability of the system and prevent the pipeline pressure from being suddenly reduced to influence the normal operation of the system. It should be understood that, as such, the first ultra-long connecting pipe 6 is provided on the pipe between the secondary throttle 9 and the evaporator 3. The second branch is provided on the main pipe before the primary throttle 8. In addition, a flash tank 5 is provided in the line between the primary throttling element 8 and the secondary throttling element 9. Therefore, the preliminarily throttled refrigerant is easier to decompress and evaporate in the flash evaporator 5.
The refrigerant circulation system under the refrigeration mode that this embodiment provided can save suitable amount of refrigerant in interchangeable hot gas-liquid separator 4 in advance, need not after-sales professional from the outside to supply the refrigerant volume that overlength connecting pipe needs before air conditioning unit debugging start, need not to operate various specialized tool, improves the manpower efficiency. In addition, the replaceable hot gas-liquid separator 4 provided by the embodiment has the functions of liquid storage and air supplement, so that the air conditioning unit can automatically adjust the amount of the refrigerant in the normal operation process of refrigerating an extremely severe environment, supplement the refrigerant to meet the demand of the amount of the refrigerant, and reduce the exhaust temperature to realize the reliable operation of cooling the unit; and the redundant refrigerant is recycled to discharge the liquid refrigerant to enter the compressor 1, so that the liquid impact prevention function of the unit is realized, the refrigeration effect is improved, and the system reliability is improved.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (11)
1. A refrigerant circulation system in a cooling mode, comprising:
the main pipeline is used for connecting the compressor (1), the condenser (2), the throttling component and the evaporator (3);
a regulating pipeline communicated with the main pipeline;
the replaceable hot gas-liquid separator (4) is communicated with the adjusting pipeline;
the replaceable hot gas-liquid separator (4) stores a refrigerant, and the replaceable hot gas-liquid separator (4) is suitable for recovering a liquid refrigerant in the main pipeline or supplementing a gaseous refrigerant to the main pipeline through the regulating pipeline;
the adjusting pipeline comprises a pressurization pipeline, the pressurization pipeline is connected between an exhaust port of the compressor (1) and the replaceable hot gas-liquid separator (4), and a first electromagnetic valve (10) is arranged on the pressurization pipeline;
the adjusting pipeline further comprises a pressure reducing pipeline, the refrigerant circulating system further comprises a flash evaporator (5) in the refrigeration mode, one end of the flash evaporator (5) is connected with the replaceable hot gas-liquid separator (4) through the pressure reducing pipeline, and the other end of the flash evaporator (5) is arranged on a pipeline between the condenser (2) and the evaporator (3).
2. The refrigerant cycle system in a refrigeration mode according to claim 1, wherein the hot-gas-exchangeable separator (4) includes a reservoir, an inner cylinder (41) is disposed in the reservoir, the inner cylinder (41) is configured to store the refrigerant, and an upper thin-walled heat exchange coil (42) and a lower thin-walled heat exchange coil (43) are disposed on an outer wall of the inner cylinder (41).
3. The refrigerant cycle system in a refrigeration mode according to claim 2, wherein an air outlet (44) and an liquid inlet (45) are disposed at a top of the accumulator, the air outlet (44) and the liquid inlet (45) are both communicated with the inner cavity cylinder (41), the upper thin-wall heat exchange coil (42) is provided with a first inlet end (47) and a first outlet end (46) which are communicated with each other, and the lower thin-wall heat exchange coil (43) is provided with a second inlet end (48) and a second outlet end (49) which are communicated with each other.
4. The refrigerant cycle system in a refrigeration mode according to claim 3, wherein the main pipeline includes a first pipeline and a second pipeline, the first pipeline is connected between the condenser (2) and the throttling component, and the second pipeline is connected between the return air port of the compressor (1) and the evaporator (3);
the adjusting pipeline comprises an air supplementing pipeline and a liquid storage pipeline, the air supplementing pipeline is connected between the first pipeline and the air outlet (44), and a third electromagnetic valve (12) is arranged on the air supplementing pipeline; the liquid storage pipeline is connected between the second pipeline and the liquid inlet (45), and a fourth electromagnetic valve (13) is arranged on the liquid storage pipeline.
5. Refrigerant cycle system in cooling mode according to claim 4, wherein said booster line is connected between a discharge outlet of said compressor (1) and said second inlet end (48) of said hot gas-liquid separator (4).
6. The refrigerant cycle system as claimed in claim 5, wherein the adjusting line further comprises a second branch line, and both ends of the second branch line are connected to the second outlet end (49) of the exchangeable hot gas-liquid separator (4) and the second line, respectively.
7. Refrigerant cycle system in cooling mode according to claim 4, wherein one end of said flash tank (5) is connected to said first inlet end (47) of said hot gas-liquid separator (4) via said depressurization line.
8. The refrigerant cycle system under refrigeration mode according to claim 7, wherein a second solenoid valve (11) is disposed on the pressure reducing pipeline, and the second solenoid valve (11) is used to control whether the flash steam in the flash tank (5) enters the hot-gas-liquid exchangeable separator (4).
9. The refrigerant cycle system as claimed in claim 7, wherein the adjusting line further comprises a first branch line, and both ends of the first branch line are connected to the first outlet end (46) of the hot gas-liquid exchangeable separator (4) and the first line, respectively.
10. The refrigerant cycle system in a cooling mode according to claim 7, wherein the throttling part comprises a primary throttling part (8) and a secondary throttling part (9) which are sequentially arranged along a refrigerant flow direction, and the flash tank (5) is arranged on a pipeline between the primary throttling part (8) and the secondary throttling part (9).
11. An air conditioner, comprising the refrigerant circulation system in a cooling mode according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911295999.6A CN110940119B (en) | 2019-12-16 | 2019-12-16 | Refrigerant circulation system and air conditioner under refrigeration mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911295999.6A CN110940119B (en) | 2019-12-16 | 2019-12-16 | Refrigerant circulation system and air conditioner under refrigeration mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110940119A CN110940119A (en) | 2020-03-31 |
| CN110940119B true CN110940119B (en) | 2021-09-17 |
Family
ID=69911469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911295999.6A Active CN110940119B (en) | 2019-12-16 | 2019-12-16 | Refrigerant circulation system and air conditioner under refrigeration mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110940119B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059761B (en) * | 2018-10-17 | 2021-10-29 | 株式会社日本伊藤美珂 | Heat pump water heater |
| CN112503738B (en) * | 2020-12-17 | 2022-05-17 | 海信（广东）空调有限公司 | Air conditioner and refrigerant adjusting method thereof |
| CN115046323B (en) * | 2022-06-30 | 2023-05-12 | 珠海格力电器股份有限公司 | Refrigerating regulation system, refrigerating system, electric appliance and refrigerating method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2763760Y (en) * | 2004-12-16 | 2006-03-08 | 上海大洋制冷工程有限公司 | Gas-liquid separator with heat regenerator function |
| EP1666814A1 (en) * | 2004-11-26 | 2006-06-07 | LG Electronics Inc. | Air conditioning system |
| CN101124441A (en) * | 2005-02-18 | 2008-02-13 | 卡里尔公司 | Refrigeration circuit with improved liquid/steam receiver |
| CN207702782U (en) * | 2017-11-29 | 2018-08-07 | 珠海格力电器股份有限公司 | A kind of refrigerant heating device and air conditioner |
| CN109297213A (en) * | 2018-08-24 | 2019-02-01 | 珠海格力电器股份有限公司 | Air-conditioning system and compressor gas supply control method |
-
2019
- 2019-12-16 CN CN201911295999.6A patent/CN110940119B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1666814A1 (en) * | 2004-11-26 | 2006-06-07 | LG Electronics Inc. | Air conditioning system |
| CN2763760Y (en) * | 2004-12-16 | 2006-03-08 | 上海大洋制冷工程有限公司 | Gas-liquid separator with heat regenerator function |
| CN101124441A (en) * | 2005-02-18 | 2008-02-13 | 卡里尔公司 | Refrigeration circuit with improved liquid/steam receiver |
| CN207702782U (en) * | 2017-11-29 | 2018-08-07 | 珠海格力电器股份有限公司 | A kind of refrigerant heating device and air conditioner |
| CN109297213A (en) * | 2018-08-24 | 2019-02-01 | 珠海格力电器股份有限公司 | Air-conditioning system and compressor gas supply control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110940119A (en) | 2020-03-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110940119B (en) | Refrigerant circulation system and air conditioner under refrigeration mode | |
| CN102042724B (en) | Refrigerant control unit, air conditioner refrigeration system and refrigerant cycle control methods | |
| EP2325577B1 (en) | Heat pump | |
| CN110940067B (en) | Control method and device for automatically supplementing liquid adding amount in refrigeration mode and air conditioner | |
| EP1526345B1 (en) | Refrigeration equipment | |
| CN114151934B (en) | Air conditioner | |
| CN107816818A (en) | A kind of folding type cooling system of freezer with hot gas defrosting | |
| JP2012132586A (en) | Refrigeration cycle device | |
| CN114061183A (en) | Air conditioning unit and control method thereof | |
| CN110966791A (en) | Air conditioning system | |
| US20240093921A1 (en) | Cooling system with flooded low side heat exchangers | |
| CN111609478B (en) | Air conditioner refrigerant automatic adjusting device, control method and air conditioning system | |
| CN201615644U (en) | Air-conditioner coolant circulating unit | |
| CN111023484B (en) | Automatic control method for refrigerant quantity in heating mode | |
| CN211552133U (en) | High-efficiency energy-saving refrigeration heating temperature control system | |
| WO2021008331A1 (en) | Heat pump unit | |
| CN218442845U (en) | Cascade refrigerating system and refrigerating equipment | |
| CN111023362B (en) | Refrigerant circulation system and air conditioner under heating mode | |
| CN209893678U (en) | Heat exchange system | |
| CN209801850U (en) | Refrigeration compressor under low temperature environment and refrigerating system thereof | |
| CN109341132B (en) | Heat pump system and control method thereof | |
| CN114151935A (en) | Air conditioning system | |
| CN110173934B (en) | Control method of gas heat pump multi-split air conditioner supercooling structure | |
| CN210569393U (en) | Water chilling unit | |
| JP3392655B2 (en) | Ice storage device using supercooled water and operation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |