CN112503810A - Refrigerant adjusting system and refrigerant adjusting method of air conditioner - Google Patents
Refrigerant adjusting system and refrigerant adjusting method of air conditioner Download PDFInfo
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- CN112503810A CN112503810A CN202011497021.0A CN202011497021A CN112503810A CN 112503810 A CN112503810 A CN 112503810A CN 202011497021 A CN202011497021 A CN 202011497021A CN 112503810 A CN112503810 A CN 112503810A
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 483
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 45
- 230000001105 regulatory effect Effects 0.000 claims abstract description 36
- 230000003750 conditioning effect Effects 0.000 claims description 37
- 238000007599 discharging Methods 0.000 claims description 16
- 230000033228 biological regulation Effects 0.000 claims description 7
- 238000011056 performance test Methods 0.000 abstract description 6
- 238000001816 cooling Methods 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 239000005431 greenhouse gas Substances 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- F25B43/006—Accumulators
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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
- F25B45/00—Arrangements for charging or discharging 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
- F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
- F25B2345/003—Control issues for charging or collecting refrigerant to or from a cycle
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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
- F25B2600/05—Refrigerant levels
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Abstract
The invention discloses a refrigerant regulating system and a refrigerant regulating method of an air conditioner, wherein the refrigerant regulating system comprises: the compressor comprises an air suction port and an air exhaust port; one end of the first heat exchanger is connected with the air suction port; one end of the second heat exchanger is connected with the exhaust port; the liquid storage tank comprises an inlet, a first outlet and a second outlet, and the inlet is connected with the other end of the second heat exchanger; the first throttling device is connected between the other end of the first heat exchanger and the second outlet; one end of the refrigerant adjusting device is switchably connected with one of the flow path and the first outlet which are positioned at the downstream of the first throttling device, the other end of the refrigerant adjusting device is a refrigerant discharge end when the one end of the refrigerant adjusting device is connected with the flow path at the downstream of the first throttling device, and the other end of the refrigerant adjusting device is a refrigerant filling end when the one end of the refrigerant adjusting device is connected with the first outlet. According to the refrigerant adjusting system, the refrigerant of the air conditioner is the optimal refrigerant quantity, and the accuracy of the heat exchange performance test of the air conditioner is ensured.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a refrigerant adjusting system and a refrigerant adjusting method of an air conditioner.
Background
In the related art, the amount of refrigerant circulating inside the air conditioner during the testing process is usually adjusted by a tester according to experience and direct discharge or direct filling of an external refrigerant bottle. However, the above-mentioned adjustment method causes a large deviation between the actually circulated refrigerant quantity and the optimal refrigerant quantity when the air conditioner is in operation, thereby affecting the performance of the air conditioner. In addition, the directly discharged refrigerant can affect the physical property parameters of the air in the laboratory, such as the composition, the corresponding density, the specific heat capacity and the like, so that the test precision of the heat exchange performance of the air conditioner is affected to a certain extent. In addition, the oil content of the compressor is easily lost due to repeated discharge or filling of the refrigerant.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a refrigerant regulating system, which can effectively ensure that the refrigerant quantity circulating in an air conditioner is the optimal refrigerant quantity, and can ensure the accuracy of the heat exchange performance test of the air conditioner.
The invention also provides a refrigerant adjusting method of the air conditioner adopting the refrigerant adjusting system.
According to a first aspect of the present invention, a refrigerant conditioning system includes: a compressor including a suction port and a discharge port; one end of the first heat exchanger is connected with the air suction port; one end of the second heat exchanger is connected with the exhaust port; the liquid storage tank comprises an inlet, a first outlet and a second outlet, and the inlet is connected with the other end of the second heat exchanger; a first throttling device connected between the other end of the first heat exchanger and the second outlet; one end of the refrigerant adjusting device is connected with one of the flow path located at the downstream of the first throttling device and the first outlet in a switchable manner, when the one end of the refrigerant adjusting device is connected with the flow path located at the downstream of the first throttling device, the other end of the refrigerant adjusting device is a refrigerant discharge end, and when the one end of the refrigerant adjusting device is connected with the first outlet, the other end of the refrigerant adjusting device is a refrigerant filling end.
According to the refrigerant adjusting system provided by the embodiment of the invention, the compressor, the first heat exchanger, the second heat exchanger, the first throttling device, the liquid storage tank and the refrigerant adjusting device are arranged in the refrigerant adjusting system, and one end of the refrigerant adjusting device is switchably connected with one of the flow path and the first outlet of the liquid storage tank which are positioned at the downstream of the first throttling device, so that the refrigerant quantity circulating in the air conditioner can reach the optimal refrigerant quantity, the accuracy of the heat exchange performance test of the air conditioner can be effectively ensured, and meanwhile, the time spent on detaching, discharging, vacuumizing and refilling the refrigerant is saved, thereby improving the efficiency of matching the whole performance of the air conditioner and reducing the emission of greenhouse gases.
According to some embodiments of the invention, the refrigerant conditioning device comprises: one end of the refrigerant adjusting flow path is switchably connected with one of the flow path and the first outlet which are positioned at the downstream of the first throttling device, and the other end of the refrigerant adjusting flow path is the refrigerant discharge end or the refrigerant filling end; and the flowmeter is arranged on the refrigerant regulating flow path to detect the flow of the refrigerant flowing through the flowmeter.
According to some embodiments of the invention, the refrigerant conditioning flow path comprises: one end of the refrigerant filling flow path is connected with the first outlet, and the other end of the refrigerant filling flow path is connected with the flowmeter; one end of the refrigerant discharge flow path is connected with the flowmeter, and the other end of the refrigerant discharge flow path is connected between the other end of the first heat exchanger and the first throttling device; the refrigerant discharge flow path is conducted when the other end of the refrigerant adjusting device is the refrigerant discharge end, and the refrigerant filling flow path is conducted when the other end of the refrigerant adjusting device is the refrigerant filling end.
According to some embodiments of the present invention, a second throttling device is disposed on the refrigerant discharging flow path.
According to some embodiments of the present invention, the coolant filling flow path includes a first flow path and a second flow path connected to each other, a free end of the first flow path is connected to the first outlet, a free end of the second flow path is connected to the flow meter, a first switch is disposed on the first flow path to control on/off of the first flow path, and a second switch is disposed on the second flow path to control on/off of the second flow path.
According to some embodiments of the present invention, the other end of the refrigerant charging flow path is connected to one end of the flow meter, and the one end of the refrigerant discharging flow path is connected to the other end of the flow meter; the refrigerant regulation flow path further includes: the refrigerant filling bypass is connected with the flowmeter and the second switch in parallel, and a bypass switch is arranged on the refrigerant filling bypass to control the on-off of the refrigerant filling bypass.
According to some embodiments of the invention, the refrigerant conditioning flow path further comprises: one end of the first branch is connected with the flowmeter; and the second branch circuit is connected with the first branch circuit in parallel, and one end of the second branch circuit is connected with the flowmeter.
According to some embodiments of the invention, a first branch switch is provided on the first branch, and a second branch switch is provided on the second branch.
According to some embodiments of the present invention, the first branch comprises a first sub-branch and a second sub-branch connected to each other, the first branch switch comprises a first sub-switch and a second sub-switch, the first sub-switch is disposed on the first sub-branch, and the second sub-switch is disposed on the second sub-branch; the refrigerant regulation flow path further includes: the third branch circuit is connected with the flowmeter and the second sub-switch in parallel, and a third branch switch is arranged on the third branch circuit; and the fourth branch circuit is connected with the third branch circuit in parallel, and a fourth branch switch is arranged on the fourth branch circuit.
According to a second aspect of the present invention, a refrigerant conditioning method of an air conditioner employs the refrigerant conditioning system according to the first aspect of the present invention.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a refrigerant conditioning system and an air conditioner according to an embodiment of the invention;
fig. 2 is a schematic diagram of the refrigerant conditioning system and the air conditioner shown in fig. 1, wherein the air conditioner is filled with refrigerant when the air conditioner is refrigerating;
fig. 3 is a schematic diagram of the refrigerant conditioning system and the air conditioner shown in fig. 1, illustrating the refrigerant discharged from the air conditioner during cooling of the air conditioner;
fig. 4 is a schematic diagram of the refrigerant conditioning system and the air conditioner shown in fig. 1, wherein the air conditioner is filled with refrigerant when the air conditioner heats;
fig. 5 is a schematic diagram of the refrigerant conditioning system and the air conditioner shown in fig. 1, in which the refrigerant in the air conditioner is discharged when the air conditioner is heating.
Reference numerals:
100: a refrigerant conditioning system;
1: a compressor; 11: an air suction port; 12: an exhaust port;
2: a first heat exchanger; 3: a second heat exchanger; 4: a first throttling device;
5: a liquid storage tank; 51: an inlet; 52: a first outlet; 53: a second outlet;
6: a refrigerant regulating device; 61: a refrigerant filling flow path; 611: a first flow path;
6111: a first switch; 612: a second flow path; 6121: a second switch;
62: a refrigerant discharge flow path; 621: a second throttling device; 63: a flow meter;
64: a refrigerant filling bypass; 641: a bypass switch; 65: a first branch;
651: a first bypass switch; 6511: a first sub-switch; 6512: a second sub-switch;
652: a first sub-branch; 653: a second sub-branch; 66: a second branch circuit;
661: a second branch switch; 67: a third branch; 671: a third branch switch;
68: a fourth branch; 681: a fourth branch switch;
200: an air conditioner;
201: an air conditioning compressor; 202: a throttling device;
203: an indoor heat exchanger; 204: an outdoor heat exchanger.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The air conditioner 200 performs a refrigeration cycle of the air conditioner 200 by using an air conditioner compressor 201, a condenser, a throttle device 202, and an evaporator in the present application. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.
The air-conditioning compressor 201 compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
The expansion device 202 expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the throttle device 202 and returns the refrigerant gas in a low-temperature and low-pressure state to the air-conditioning compressor 201. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner 200 can adjust the temperature of the indoor space throughout the cycle.
The outdoor unit of the air conditioner 200 refers to a portion of the refrigeration cycle including the air conditioner compressor 201 and the outdoor heat exchanger 204, the indoor unit of the air conditioner 200 includes the indoor heat exchanger 203, and the throttle device 202 may be provided in either the indoor unit or the outdoor unit.
The indoor heat exchanger 203 and the outdoor heat exchanger 204 function as a condenser or an evaporator. When the indoor heat exchanger is used as the condenser, the air conditioner 200 is used as the heater for the heating mode, and when the indoor heat exchanger is used as the evaporator, the air conditioner 200 is used as the cooler for the cooling mode.
A refrigerant conditioning system 100 according to an embodiment of the present invention is described below with reference to fig. 1-5. The refrigerant conditioning system 100 may be applied to an air conditioner 200 to adjust the amount of refrigerant in the air conditioner 200. The refrigerant adjusting system 100 may adjust the amount of refrigerant in the air conditioner 200 at a test stage, so that the content of refrigerant in the air conditioner 200 reaches an optimal value. Of course, the refrigerant adjusting system 100 may also adjust the amount of the refrigerant in the air conditioner 200 during the actual use process, so as to make the amount of the refrigerant in the air conditioner 200 reach the optimal use state value.
In the following description of the present application, the air conditioner 200 in which the refrigerant conditioning system 100 is applied to the test stage is taken as an example for explanation. Of course, those skilled in the art will appreciate that the refrigerant conditioning system 100 may also be applied to other types of equipment, and is not limited to the air conditioner 200.
As shown in fig. 1 to 5, a refrigerant conditioning system 100 according to an embodiment of the first aspect of the present invention includes a compressor 1, a first heat exchanger 2, a second heat exchanger 3, a first throttling device 4, a liquid storage tank 5, and a refrigerant conditioning device 6.
Specifically, the compressor 1 includes a suction port 11 for sucking a refrigerant to be compressed (for example, a low-temperature and low-pressure refrigerant), and a discharge port 12 for discharging a compressed refrigerant (for example, a high-temperature and high-pressure refrigerant). One end (e.g., a lower end in fig. 1) of the first heat exchanger 2 is connected to the suction port 11, and one end (e.g., a lower end in fig. 1) of the second heat exchanger 3 is connected to the exhaust port 12. The reservoir tank 5 includes an inlet 51, a first outlet 52, and a second outlet 53, and the inlet 51 is connected to the other end (e.g., the upper end in fig. 1) of the second heat exchanger 3. The refrigerant in the accumulator 5 can flow into the air conditioner 200 from the first outlet 52 to fill the air conditioner with the refrigerant. The refrigerant in the air conditioner 200 may flow into the accumulator 5 through the inlet 51 to discharge the refrigerant in the air conditioner 200. The first throttling device 4 is connected between the other end (e.g., the upper end in fig. 1) of the first heat exchanger 2 and the second outlet 53.
With such an arrangement, when the refrigerant adjusting system 100 is used to adjust the refrigerant in the air conditioner 200 during the testing process, since the pressures of the refrigerants at different positions in the refrigerant circulation loop formed by the compressor 1, the first heat exchanger 2, the second heat exchanger 3, the first throttling device 4 and the liquid storage tank 5 may be different, the refrigerant in the refrigerant circulation loop can be converted from a low-temperature and low-pressure refrigerant into a high-temperature and high-pressure refrigerant after passing through the compressor 1, the first heat exchanger 2, the second heat exchanger 3 and the first throttling device 4, since the inlet 51 of the liquid storage tank 5 is connected to the other end of the second heat exchanger 3, the refrigerant flowing out from the other end of the second heat exchanger 3 is a high-temperature and high-pressure refrigerant, and thus the refrigerant flowing into the liquid storage tank 5 from the inlet 51 is a high-temperature and. The pressure environment in the refrigerant regulating system 100 can be effectively ensured through the refrigerant circulating loop, the refrigerant in the liquid storage tank 5 is ensured to be in a high-pressure liquid state, the refrigerant in the air conditioner 200 can be discharged into the refrigerant regulating system 100 at any time or the refrigerant in the refrigerant regulating system 100 can be filled into the air conditioner 200 at any time, and therefore the refrigerant quantity in the air conditioner 200 can be the optimal refrigerant quantity through continuous regulation of the refrigerant regulating system 100.
One end of the refrigerant adjusting device 6 is switchably connected to one of the flow path located downstream of the first throttling device 4 and the first outlet 52, and when the one end of the refrigerant adjusting device 6 is connected to the flow path located downstream of the first throttling device 4, the other end of the refrigerant adjusting device 6 is a refrigerant discharge end (as shown in fig. 3 and 5). When the amount of the refrigerant actually circulating in the air conditioner 200 is greater than the optimal amount of the refrigerant, the refrigerant discharge end may be connected to the high-pressure section of the air conditioner 200, and the refrigerant pressure of the high-pressure section of the air conditioner 200 is greater than the pressure of the refrigerant in the flow path at the downstream of the first throttling device 4, so that the air conditioner 200 may smoothly flow the redundant high-pressure refrigerant to the flow path at the downstream of the first throttling device 4 through the refrigerant regulating device 6, so that the refrigerant in the flow path at the downstream of the first throttling device 4 may be sequentially converted into a high-pressure liquid state through the first heat exchanger 2, the compressor 1 and the second heat exchanger 3, and finally flows into the liquid storage tank 5 of the refrigerant.
When the one end of the refrigerant adjusting device 6 is connected to the first outlet 52, the other end of the refrigerant adjusting device 6 is a refrigerant filling end (as shown in fig. 2 and 4). When the amount of the refrigerant actually circulating in the air conditioner 200 is smaller than the optimal amount of the refrigerant, the refrigerant filling end may be connected to the low-pressure section of the air conditioner 200, and the refrigerant in the liquid storage tank 5 of the refrigerant regulating system 100 may be filled into the air conditioner 200 through the refrigerant regulating device 6 via the first outlet 52 because the refrigerant in the liquid storage tank 5 is a high-pressure liquid refrigerant.
Therefore, compared with the traditional refrigerant adjusting mode of the air conditioner, the refrigerant adjusting system 100 can adjust the refrigerant quantity in the air conditioner 200 until the actually circulating refrigerant quantity in the air conditioner 200 reaches the optimal refrigerant quantity. Moreover, in the refrigerant adjusting process of the air conditioner 200, the refrigerant can be circulated in a closed environment all the time, so that the stability of physical parameters such as composition, density and specific heat capacity of air in a laboratory can be effectively guaranteed, and the accuracy of the heat exchange performance test of the air conditioner 200 can be effectively guaranteed. Meanwhile, the air conditioner 200 can accurately adjust the amount of the refrigerant in the air conditioner 200 without disassembling the air conditioner, and the time spent on disassembling the air conditioner, discharging the refrigerant, vacuumizing and refilling the refrigerant is saved, so that the efficiency of matching the whole air conditioner 200 in performance can be improved, and the emission of greenhouse gases is reduced.
According to the refrigerant adjusting system 100 of the embodiment of the invention, the compressor 1, the first heat exchanger 2, the second heat exchanger 3, the first throttling device 4, the liquid storage tank 5 and the refrigerant adjusting device 6 are arranged in the refrigerant adjusting system 100, and one end of the refrigerant adjusting device 6 is switchably connected with one of the flow path of the liquid storage tank 5 located at the downstream of the first throttling device 4 and the first outlet 52, so that the refrigerant amount circulating in the air conditioner 200 can reach the optimal refrigerant amount, and the accuracy of the heat exchange performance test of the air conditioner 200 can be effectively ensured. Moreover, the efficiency of the whole performance matching of the air conditioner 200 can be improved, the emission of greenhouse gases is reduced, and the environment friendliness is achieved.
According to some embodiments of the present invention, as shown in fig. 1 to 5, the refrigerant regulating device 6 includes a refrigerant regulating flow path and a flow meter 63, one end of the refrigerant regulating flow path is switchably connected to one of the flow path and the first outlet 52 located downstream of the first throttling device 4, and the other end of the refrigerant regulating flow path is a refrigerant discharge end or a refrigerant filling end. The flow meter 63 is provided on the refrigerant regulating passage to detect the flow rate of the refrigerant flowing through the flow meter 63. When the one end of the refrigerant adjusting flow path is connected to the flow path located downstream of the first throttling device 4, and the other end of the refrigerant adjusting flow path is a refrigerant discharge end (as shown in fig. 3 and 5), at this time, the air conditioner 200 may discharge excess refrigerant to the liquid storage tank 5 of the refrigerant adjusting system 100 through the refrigerant adjusting flow path, and during the above process, the refrigerant discharged from the air conditioner 200 flows through the flow meter 63, so that the flow rate of the refrigerant discharged from the air conditioner 200 may be detected; when the one end of the refrigerant regulating flow path is connected to the first outlet 52 and the other end of the refrigerant regulating flow path is a refrigerant filling end (as shown in fig. 2 and 4), the refrigerant in the refrigerant regulating system 100 can be filled into the air conditioner 200 through the refrigerant regulating flow path, and during the above process, the refrigerant discharged from the refrigerant regulating system 100 flows through the flow meter 63, so that the flow rate of the refrigerant discharged from the refrigerant regulating system 100 can be detected. Therefore, a tester can calculate the actual amount of refrigerant in the air conditioner 200 after filling or discharging according to the amount of refrigerant pre-filled in the air conditioner 200 and the flow rate (including the amount of refrigerant filled or discharged) of the refrigerant flowing through the flow meter 63, so that the refrigerant adjusting system 100 can quantitatively fill or discharge the refrigerant to the air conditioner 200 in the operating state of the air conditioner 200, and further, the amount of refrigerant in the air conditioner 200 to be tested can be accurately controlled. In addition, the flow rate of the refrigerant flowing through the refrigerant regulation flow path can be accurately detected by the flow meter 63, so that the refrigerant regulation system 100 can reduce the number of times of discharging or filling the refrigerant, and further, the loss of the oil content in the air conditioner compressor 201 can be effectively reduced.
Alternatively, the flow meter 63 may be a mass flow meter. But is not limited thereto.
Further, referring to fig. 2 to 5, the refrigerant adjusting flow path includes a refrigerant filling flow path 61 and a refrigerant discharging flow path 62, one end of the refrigerant filling flow path 61 is connected to the first outlet 52, and the other end of the refrigerant filling flow path 61 is connected to the flow meter 63. When the other end of the refrigerant regulator 6 is a refrigerant filling end, the refrigerant filling flow path 61 is opened (as shown in fig. 2 and 4). At this time, the other end of the refrigerant adjusting device 6 is a high-pressure end and is communicated with a low-pressure section of the air conditioner 200, the refrigerant in the liquid storage tank 5 can smoothly flow to the air conditioner 200 through the refrigerant filling flow path 61 and the flow meter 63, and in the process, the flow meter 63 can detect the flow rate of the refrigerant flowing through the refrigerant filling flow path 61 in real time, so that a tester can obtain the accurate amount of the refrigerant filled into the air conditioner 200. One end of the refrigerant discharge flow path 62 is connected to the flowmeter 63, and the other end of the refrigerant discharge flow path 62 is connected between the other end of the first heat exchanger 2 and the first throttle device 4. When the other end of the refrigerant adjusting device 6 is a refrigerant discharge end, the refrigerant discharge flow path 62 is conducted (as shown in fig. 3 and 5), and the other end of the refrigerant adjusting device 6 is a low-pressure end and is communicated with a high-pressure section of the air conditioner 200, the refrigerant in the air conditioner 200 can smoothly flow to the liquid storage tank 5 through the refrigerant discharge flow path 62 and the flow meter 63, and in the process, the flow meter 63 can detect the flow rate of the refrigerant flowing through the refrigerant discharge flow path 62 in real time, so that a tester can obtain the amount of the refrigerant remaining in the air conditioner 200.
Alternatively, the second throttling device 621 is provided in the refrigerant discharge flow path 62. For example, in the example of fig. 1 to 5, one end of the refrigerant discharge flow path 62 is connected between the first heat exchanger 2 and the first throttling device 4, the other end of the refrigerant discharge flow path 62 is connected to the refrigerant charging flow path 61, and the second throttling device 621 is connected in series to the refrigerant discharge flow path 62. When the air conditioner 200 discharges the refrigerant, the tester can make the refrigerant discharge flow path 62 conducted by adjusting the opening degree of the second throttling device 621, and the high-pressure liquid refrigerant discharged from the air conditioner 200 can be throttled and depressurized by the second throttling device 621, so that the refrigerant can smoothly enter the first heat exchanger 2, and can exchange heat with the liquid cold coal in the first heat exchanger 2, so as to ensure that the refrigerant entering the compressor 1 is in a gaseous state, thereby effectively avoiding the liquid impact phenomenon of the compressor 1, and then the refrigerant discharged from the compressor 1 is changed into the high-pressure liquid refrigerant after exchanging heat by the second heat exchanger 3, and finally flows into the liquid storage tank 5. Therefore, the refrigerant in the refrigerant discharge flow path 62 can be depressurized by the second throttling device 621, so that the refrigerant before flowing into the second throttling device 621 forms a pressure difference with the refrigerant flowing into the first heat exchanger 2, and the refrigerant in the refrigerant discharge flow path 62 can smoothly flow into the first heat exchanger 2. Alternatively, the second throttling device 621 may be an electronic expansion valve. But is not limited thereto.
According to some embodiments of the present invention, the refrigerant filling flow path 61 includes a first flow path 611 and a second flow path 612 connected to each other, a free end of the first flow path 611 is connected to the first outlet 52 of the liquid storage tank 5, a free end of the second flow path 612 is connected to the flow meter 63, a first switch 6111 is disposed on the first flow path 611 to control the on/off of the first flow path 611, and a second switch 6121 is disposed on the second flow path 612 to control the on/off of the second flow path 612. For example, in the example of fig. 2 and 4, when the air conditioner 200 needs to be filled with refrigerant, the first switch 6111 and the second switch 6121 are both in an open state to conduct the refrigerant filling flow path 61, and at this time, the refrigerant in the liquid storage tank 5 may sequentially flow through the first flow path 611, the second flow path 612 and the flow meter 63 and flow to the air conditioner 200. When the air conditioner 200 needs to discharge the refrigerant, the first switch 6111 and the second switch 6121 are both in the off state, so that the refrigerant in the air conditioner 200 can flow to the reservoir 5 through the inlet 51 along the refrigerant discharge flow path 62, and the refrigerant is effectively prevented from flowing to the reservoir 5 through the first outlet 52 or directly flowing into the reservoir 5 without flowing through the flowmeter 63. Therefore, by arranging the first switch 6111 and the second switch 6121, the refrigerant in the liquid storage tank 5 can be effectively ensured to flow to the air conditioner 200 according to the designated flow path, and meanwhile, the amount of the refrigerant filled into the air conditioner 200 can be accurately obtained.
Further, referring to fig. 1 to 5, the other end of the refrigerant charging flow path 61 is connected to one end of the flow meter 63, and the one end of the refrigerant discharging flow path 62 is connected to the other end of the flow meter 63. With such an arrangement, when the refrigerant adjusting system 100 operates, no matter the refrigerant filling flow path 61 is conducted or the refrigerant discharging flow path 62 is conducted, the refrigerant flowing through the refrigerant filling flow path 61 or the refrigerant discharging flow path 62 flows through the flow meter 63, and the flow meter 63 can accurately detect the flow rate of the refrigerant flowing through the refrigerant filling flow path 61 or the refrigerant discharging flow path 62, so that a tester can know the actual amount of the refrigerant in the air conditioner 200 after each adjustment.
The refrigerant adjusting flow path further includes a refrigerant charging bypass 64, the refrigerant charging bypass 64 is connected in parallel with the flow meter 63 and the second switch 6121, and a bypass switch 641 is disposed on the refrigerant charging bypass 64 to control on/off of the refrigerant charging bypass 64. For example, in the example of fig. 3 and 5, when the air conditioner 200 needs to discharge the refrigerant, the bypass switch 641 is in an open state to conduct the refrigerant filling bypass 64, and at this time, the refrigerant in the air conditioner 200 may flow into the accumulator 5 through the flowmeter 63, the refrigerant filling bypass 64, the refrigerant discharge flow path 62, the first heat exchanger 2, the compressor 1, and the second heat exchanger 3, so as to effectively ensure that the refrigerant of the air conditioner 200 may flow into the accumulator 5 according to a specified flow path.
According to some embodiments of the present invention, the refrigerant regulating flow path further includes a first branch 65 and a second branch 66, one end of the first branch 65 is connected to the flow meter 63, the second branch 66 is connected to the first branch 65 in parallel, and one end of the second branch 66 is connected to the flow meter 63. Referring to fig. 2, when the air conditioner 200 is in the cooling mode, the other end of the first branch line 65 is a high pressure end and is adapted to communicate with a low pressure section of the air conditioner 200, and the high pressure refrigerant in the accumulator 5 can smoothly flow to the air conditioner 200 through the refrigerant filling flow path 61, the flow meter 63 and the first branch line 65. Referring to fig. 3, when the air conditioner 200 discharges the refrigerant in the cooling mode, the other end of the second branch passage 66 is a low-pressure end and is adapted to communicate with a high-pressure section of the air conditioner 200, and the refrigerant in the air conditioner 200 can flow to the accumulator 5 through the second branch passage 66, the flow meter 63, the refrigerant charging bypass 64, and the refrigerant discharge flow path 62. Therefore, when the air conditioner 200 is in the cooling mode, the refrigerant can be filled into the low-pressure section of the air conditioner 200 from different flow paths or discharged from the high-pressure section of the air conditioner 200, so that the refrigerant in the air conditioner 200 can be adjusted in a closed environment, and meanwhile, the refrigerant in the air conditioner 200 can be automatically adjusted.
Further, as shown in fig. 1 to 5, a first branch switch 651 is disposed on the first branch 65. For example, the first branch circuit 65 includes a first sub-branch 652 and a second sub-branch 653 connected to each other, one end of the second sub-branch 643 is connected to one end of the flow meter 63 adjacent to the refrigerant charging bypass 64, the other end of the second sub-branch 643 is connected to one end of the first sub-branch 642, and the other end of the first sub-branch 643 is adapted to be connected between the throttle device 202 and the indoor heat exchanger 203 of the air conditioner 200. The first branch switch 651 includes a first sub-switch 6511 and a second sub-switch 6512, and the first sub-switch 6511 is disposed on the first sub-branch 652 for controlling on/off of the first sub-branch 652. The second sub-switch 6512 is disposed on the second sub-branch 653, and is used for controlling on/off of the second sub-branch 653. When the air conditioner 200 is in the cooling mode, the first sub switch 6511 and the second sub switch 6512 are both turned on, the first sub branch 652 and the second sub branch 653 are both conducted, and the refrigerant in the liquid storage tank 5 can flow into the air conditioner 200 through the refrigerant filling flow path 61, the flowmeter 63, the first sub branch 652 and the second sub branch 653. When the air conditioner 200 is in the heating mode, the first sub-switch 6511 is turned off, the second sub-switch 6512 is turned on, the second sub-branch 653 is turned on, and the refrigerant in the liquid storage tank 5 can flow into the air conditioner 200 through the refrigerant filling flow path 61, the flow meter 63 and the second sub-branch 653. Therefore, when the air conditioner 200 is filled with the refrigerant, the refrigerant in different operation modes can flow into the air conditioner 200 from different flow paths.
The second branch circuit 66 is provided with a second branch circuit switch 661 for controlling on/off of the second branch circuit 66. When the air conditioner 200 discharges the refrigerant in the cooling mode, the second branch switch 661 is turned on, the second branch 66 is turned on, and the refrigerant in the air conditioner 200 can flow to the liquid storage tank 5 through the first heat exchanger 2, the compressor 1, and the second heat exchanger 3 via the second branch 66, the flow meter 63, the refrigerant filling bypass 64, and the refrigerant discharge flow path 62. This allows the refrigerant to circulate through the air conditioner 200 and the refrigerant conditioning system 100 according to a specific flow path.
Referring to fig. 5, the refrigerant adjusting flow path further includes a third branch 67 and a fourth branch 68, the third branch 67 is connected in parallel with the flow meter 63 and the second sub switch 6512, and a third branch switch 671 is disposed on the third branch 67 and is used for controlling on/off of the third branch 67. For example, in the example of fig. 5, one end of the third branch 67 is connected to the left end of the flow meter 63, and the other end of the third branch 67 is connected to the end of the second sub-branch 653 remote from the flow meter 63. When the air conditioner 200 discharges the refrigerant in the heating mode, both the first sub-switch 6411 and the third branch switch 671 may be turned on, and at this time, the refrigerant in the air conditioner 200 may sequentially flow through the first sub-branch 642, the third branch 67, the flow meter 63, the refrigerant filling bypass 64, the refrigerant discharge flow path 62, the first heat exchanger 2, the compressor 1, and the second heat exchanger 3 to the liquid storage tank 5.
Referring to fig. 4, the fourth branch 68 is connected in parallel with the third branch 67, and a fourth branch switch 681 is disposed on the fourth branch 68 and is configured to control on/off of the fourth branch 68. One end of the fourth branch 68 is connected to one end of the second branch 66, and the other end of the fourth branch 68 is connected to one end of the second sub-branch 653. When the air conditioner 200 is in the heating mode, the first switch 6111, the second switch 6121, the fourth branch switch 681, and the second sub-switch 6412 may all be turned on, and at this time, the refrigerant in the liquid storage tank 5 may flow to the air conditioner 200 through the refrigerant filling flow path 61, the flow meter 63, the second sub-branch 643, and the fourth branch 68. Thus, when the air conditioner 200 discharges or charges the refrigerant in the heating mode, the third branch switch 671 and the fourth branch switch 681 may respectively control the conduction of the third branch 67 and the fourth branch 68, so that the air conditioner 200 may charge or discharge the refrigerant through different flow paths in the heating mode, thereby ensuring that the refrigerant in the air conditioner 200 may reach the optimal amount of refrigerant.
Alternatively, first switch 6111, second switch 6121, first sub-switch 6511 and second sub-switch 6512, bypass switch 641, second branch switch 661, third branch switch 671 and fourth branch switch 681 may all be solenoid valves. But is not limited thereto.
The refrigerant conditioning system 100 according to the embodiment of the present invention specifically operates as follows:
as shown in fig. 1 to 5, an end of the second branch 66 of the refrigerant conditioning system 100, which is far from the flow meter 63, is connected between the throttling device 202 and the outdoor heat exchanger 204 of the air conditioner 200, and an end of the first sub-branch 652, which is far from the flow meter 63, is connected between the throttling device 202 and the indoor heat exchanger 203. The first throttling device 4 and the second throttling device 621 may be electronic expansion valves.
As shown in fig. 2, when the air conditioner 200 is in the cooling mode and the refrigerant filling condition is satisfied, the refrigerant regulating system 100 may receive the refrigerant filling signal, turn on the first switch 6111, the second switch 6121, the first sub-switch 6511 and the second sub-switch 6512, turn off the bypass switch 641, the second branch switch 661, the third branch switch 671 and the fourth branch switch 681, and decrease the opening degrees of the first throttling device 4 and the second throttling device 621, at this time, the refrigerant filling flow path 61 and the first branch 65 are conducted, and the refrigerant in the liquid storage tank 5 may flow to the air conditioner 200 through the refrigerant filling flow path 61, the flow meter 63 and the first branch 65. The refrigerant filling condition may include a discharge temperature T of the air conditioner compressor 201 being satisfied at the same time0Greater than the maximum exhaust temperature T0maxThe current operation power P of the air conditioner compressor 201 is less than the reference power Δ P and the refrigerant quantity L in the air conditioner 100 is less than the refrigerant quantity upper limit value Lmax. The reference power Δ P is the lowest value Q of the heat exchange capacity of the air conditioner 200minEnergy efficiency lower limit EER with air conditioner 200minRatio of (1), energy efficiency lower limit EER of air conditioner 200minIs the lowest allowable value of the ratio of the heat exchange capacity to the consumed power of the air conditioner 100. Upper limit of refrigerant quantity LmaxRefers to the maximum allowable refrigerant circulation within the air conditioner 100.
When the refrigerant filling time of the air conditioner 200 continues for a period delta t, the refrigerant filling is stopped, and the first switch 6111, the second switch 6121, the first sub-switch 6511 and the second sub-switch 6512 are closed, so that the refrigerant in the refrigerant regulating system 100 flows into the compressor 1, the first heat exchanger 2, the second heat exchanger 3, the first throttling device 4 and the liquid storage tank 5And the circulation between the air conditioner 200 and the refrigerant is to provide filling points at any time. The flow meter 63 can detect the flow rate L of the refrigerant flowing through the flow meter 63 by the correlation L1The total amount L of refrigerant circulating in the air conditioner 200 at this time is calculated as L + L × Δ t1Wherein L is the amount of refrigerant in the air conditioner 200 before the air conditioner 200 fills or discharges the refrigerant.
When the closing time of each switch in the refrigerant adjusting system 100 lasts for a certain time, re-judging whether the air conditioner 200 meets the refrigerant charging condition, if so, continuing to perform the operation to charge the refrigerant into the air conditioner 200; if not, the refrigerant filling mode is quitted, the refrigerant discharging mode is executed until the refrigerant quantity of the air conditioner 200 reaches the optimal refrigerant quantity, and the operation is finished.
As shown in fig. 3, when the air conditioner 200 is in the cooling mode and the refrigerant discharge condition is satisfied, the refrigerant regulating system 100 may receive the refrigerant discharge signal, open the bypass switch 641 and the second branch switch 661, close the first switch 6111, the second switch 6121, the first sub-switch 6511, the second sub-switch 6512, the third branch switch 671 and the fourth branch switch 681, and increase the opening degrees of the first throttling device 4 and the second throttling device 621, at this time, the second branch 66, the refrigerant charging bypass 64 and the refrigerant discharge flow path 62 are turned on, and the refrigerant in the air conditioner 200 may flow to the liquid storage tank 5 through the second branch 66, the flow meter 63, the refrigerant charging bypass 64, the refrigerant discharge flow path 62, the first heat exchanger 2, the compressor 1 and the second heat exchanger 3. The refrigerant discharge condition may include a discharge temperature T of the air conditioner compressor 201 being satisfied at the same time0Less than maximum exhaust temperature T0maxAnd the current running power P of the air conditioner compressor 201 is greater than the reference power delta P or the refrigerant quantity L in the air conditioner 100 is greater than the refrigerant quantity upper limit value Lmax。
When the time for the air conditioner 200 to discharge the refrigerant outwards lasts for a period delta t, the refrigerant is stopped to be discharged, and the bypass switch 641 and the second branch switch 661 are closed, so that the refrigerant in the refrigerant regulating system 100 circulates among the compressor 1, the first heat exchanger 2, the second heat exchanger 3, the first throttling device 4 and the liquid storage tank 5, and the refrigerant discharged from the air conditioner 200 is provided for being discharged at any timeAnd (6) discharging. The flow meter 63 can detect the flow rate L of the refrigerant flowing through the flow meter 63 by the correlation L1The total amount L of refrigerant circulating in the air conditioner 200 at this time is calculated as L-L × Δ t1。
When the off time of each switch in the refrigerant adjusting system 100 lasts for a certain time, re-determining whether the air conditioner 200 meets the refrigerant discharge condition, and if so, continuing to execute the operation to discharge the refrigerant to the outside by the air conditioner 200; if not, the refrigerant discharge mode is quitted, the refrigerant filling mode is executed until the refrigerant quantity of the air conditioner 200 reaches the optimal refrigerant quantity, and the operation is finished.
Therefore, when the air conditioner 200 is in the cooling mode, the refrigerant of the air conditioner 200 and the refrigerant of the liquid storage tank 5 can be cyclically filled or discharged between the air conditioner 200 and the refrigerant regulating system 100 through different flow paths, so as to ensure that the actually circulating refrigerant quantity in the air conditioner 100 can reach the optimal refrigerant quantity.
As shown in fig. 4, when the air conditioner 200 is in the heating mode and the refrigerant charging condition is satisfied, the refrigerant regulating system 100 may receive the refrigerant charging signal, turn on the first switch 6111, the second switch 6121, the second sub-switch 6412, and the fourth branch switch 681, turn off the first sub-switch 6411, the bypass switch 641, the second branch switch 661, and the third branch switch 671, and decrease the opening degrees of the first throttling device 4 and the second throttling device 621, at this time, the refrigerant charging flow path 61, the second sub-branch 643, and the fourth branch 68 are conducted, and the refrigerant in the liquid storage tank 5 may flow to the air conditioner 200 through the medium charging flow path, the flow meter 63, the second sub-branch 643, and the fourth branch 68.
And stopping filling the refrigerant after the refrigerant filling time of the air conditioner 200 lasts for a period delta t, and closing the first switch 6111, the second switch 6121, the second sub-switch 6412 and the fourth branch switch 681, so that the refrigerant in the refrigerant regulating system 100 circulates among the compressor 1, the first heat exchanger 2, the second heat exchanger 3, the first throttling device 4 and the liquid storage tank 5, and a filling point is provided for the air conditioner 200 at any time. The flow meter 63 can detect the flow rate L of the refrigerant flowing through the flow meter 63 by the correlation L1The space-time is calculated as L + L x delta tThe total amount L of refrigerant in the cycle of the modulator 2001。
When the closing time of each switch of the refrigerant adjusting system 100 lasts for a certain time, whether the air conditioner 200 meets the refrigerant filling condition is judged again, and if the judgment result is yes, the operation is continuously executed to fill the refrigerant into the air conditioner 200; if not, the refrigerant filling mode is quitted, the refrigerant discharging mode is executed until the refrigerant quantity of the air conditioner 200 reaches the optimal refrigerant quantity, and the operation is finished.
As shown in fig. 5, when the air conditioner 200 is in the heating mode and the refrigerant discharge condition is satisfied, the refrigerant regulating system 100 may receive the refrigerant discharge signal, open the bypass switch 641, the first sub-switch 6411 and the third branch switch 671, close the first switch 6111, the second switch 6121, the second sub-switch 6412, the second branch switch 661 and the fourth branch switch 681, and increase the opening degrees of the first throttling device 4 and the second throttling device 621, at this time, the first sub-branch 642, the third branch 67, the refrigerant charging bypass 64 and the refrigerant discharge flow path 62 are turned on, and the refrigerant in the air conditioner 200 may flow to the liquid storage tank 5 through the first sub-branch 642, the third branch 67, the flow meter 63, the refrigerant charging bypass 64, the refrigerant discharge flow path 62, the first heat exchanger 2, the compressor 1 and the second heat exchanger 3.
When the time for the air conditioner 200 to discharge the refrigerant outwards lasts for a period Δ t, the refrigerant is stopped to be discharged, and the bypass switch 641, the first sub-switch 6411 and the third branch switch 671 are closed, so that the refrigerant in the refrigerant regulating system 100 circulates among the compressor 1, the first heat exchanger 2, the second heat exchanger 3, the first throttling device 4 and the liquid storage tank 5, and a discharge point is provided for the air conditioner 200 to discharge the refrigerant at any time. The flow meter 63 can detect the flow rate L of the refrigerant flowing through the flow meter 63 by the correlation L1The total amount L of refrigerant circulating in the air conditioner 200 at this time is calculated as L-L × Δ t1。
When the off time of each switch of the refrigerant adjusting system 100 lasts for a certain time, re-judging whether the air conditioner 200 meets the refrigerant discharge condition, if so, continuing to execute the operation to discharge the refrigerant to the outside by the air conditioner 200; if not, the refrigerant discharge mode is quitted, the refrigerant filling mode is executed until the refrigerant quantity of the air conditioner 200 reaches the optimal refrigerant quantity, and the operation is finished.
Therefore, when the air conditioner 200 is in the heating mode, the refrigerant of the air conditioner 200 and the refrigerant of the liquid storage tank 5 can be cyclically filled or discharged between the air conditioner 200 and the refrigerant regulating system 100 through different flow paths, so as to ensure that the actually circulating refrigerant quantity in the air conditioner 100 can reach the optimal refrigerant quantity.
The refrigerant conditioning system 100 according to the first embodiment of the present invention is adopted in the method for conditioning refrigerant of the air conditioner 200 according to the second embodiment of the present invention.
According to the refrigerant adjusting method of the air conditioner 200 in the embodiment of the invention, by adopting the refrigerant adjusting system 100, the refrigerant quantity in the air conditioner 200 can be effectively ensured to be the optimal refrigerant quantity, and meanwhile, the accuracy of the heat exchange performance test of the air conditioner 200 is ensured.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A refrigerant conditioning system, comprising:
a compressor including a suction port and a discharge port;
one end of the first heat exchanger is connected with the air suction port;
one end of the second heat exchanger is connected with the exhaust port;
the liquid storage tank comprises an inlet, a first outlet and a second outlet, and the inlet is connected with the other end of the second heat exchanger;
a first throttling device connected between the other end of the first heat exchanger and the second outlet;
one end of the refrigerant adjusting device is connected with one of the flow path located at the downstream of the first throttling device and the first outlet in a switchable manner, when the one end of the refrigerant adjusting device is connected with the flow path located at the downstream of the first throttling device, the other end of the refrigerant adjusting device is a refrigerant discharge end, and when the one end of the refrigerant adjusting device is connected with the first outlet, the other end of the refrigerant adjusting device is a refrigerant filling end.
2. The refrigerant conditioning system as set forth in claim 1, wherein the refrigerant conditioning device comprises:
one end of the refrigerant adjusting flow path is switchably connected with one of the flow path and the first outlet which are positioned at the downstream of the first throttling device, and the other end of the refrigerant adjusting flow path is the refrigerant discharge end or the refrigerant filling end;
and the flowmeter is arranged on the refrigerant regulating flow path to detect the flow of the refrigerant flowing through the flowmeter.
3. The refrigerant conditioning system as claimed in claim 2, wherein the refrigerant conditioning flow path comprises:
one end of the refrigerant filling flow path is connected with the first outlet, and the other end of the refrigerant filling flow path is connected with the flowmeter;
one end of the refrigerant discharge flow path is connected with the flowmeter, and the other end of the refrigerant discharge flow path is connected between the other end of the first heat exchanger and the first throttling device;
the refrigerant discharge flow path is conducted when the other end of the refrigerant adjusting device is the refrigerant discharge end, and the refrigerant filling flow path is conducted when the other end of the refrigerant adjusting device is the refrigerant filling end.
4. The refrigerant conditioning system as claimed in claim 3, wherein a second throttling device is provided on the refrigerant discharge flow path.
5. The refrigerant conditioning system as claimed in claim 3, wherein the refrigerant charging path comprises a first path and a second path connected to each other, a free end of the first path is connected to the first outlet, a free end of the second path is connected to the flow meter, a first switch is disposed on the first path to control on/off of the first path, and a second switch is disposed on the second path to control on/off of the second path.
6. The refrigerant conditioning system according to claim 5, wherein the other end of the refrigerant charging flow path is connected to one end of the flow meter, and the one end of the refrigerant discharging flow path is connected to the other end of the flow meter;
the refrigerant regulation flow path further includes:
the refrigerant filling bypass is connected with the flowmeter and the second switch in parallel, and a bypass switch is arranged on the refrigerant filling bypass to control the on-off of the refrigerant filling bypass.
7. The refrigerant conditioning system as claimed in any one of claims 3 to 6, wherein the refrigerant conditioning flow path further comprises:
one end of the first branch is connected with the flowmeter;
and the second branch circuit is connected with the first branch circuit in parallel, and one end of the second branch circuit is connected with the flowmeter.
8. The refrigerant conditioning system as claimed in claim 7, wherein a first branch switch is disposed on the first branch, and a second branch switch is disposed on the second branch.
9. The refrigerant conditioning system as claimed in claim 8, wherein the first branch comprises a first sub-branch and a second sub-branch connected to each other, the first branch switch comprises a first sub-switch and a second sub-switch, the first sub-switch is disposed on the first sub-branch, and the second sub-switch is disposed on the second sub-branch;
the refrigerant regulation flow path further includes:
the third branch circuit is connected with the flowmeter and the second sub-switch in parallel, and a third branch switch is arranged on the third branch circuit;
and the fourth branch circuit is connected with the third branch circuit in parallel, and a fourth branch switch is arranged on the fourth branch circuit.
10. A refrigerant conditioning method of an air conditioner, characterized by using the refrigerant conditioning system according to any one of claims 1 to 9.
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| CN113074432A (en) * | 2021-04-28 | 2021-07-06 | 珠海格力电器股份有限公司 | Air conditioner refrigerant quantity adjusting method and device and air conditioning system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113074432A (en) * | 2021-04-28 | 2021-07-06 | 珠海格力电器股份有限公司 | Air conditioner refrigerant quantity adjusting method and device and air conditioning system |
| CN113074432B (en) * | 2021-04-28 | 2022-04-08 | 珠海格力电器股份有限公司 | Air conditioner refrigerant quantity adjusting method and device and air conditioning system |
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