CN112628848A - Air conditioning system and control method thereof - Google Patents
Air conditioning system and control method thereof Download PDFInfo
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- CN112628848A CN112628848A CN202011505482.8A CN202011505482A CN112628848A CN 112628848 A CN112628848 A CN 112628848A CN 202011505482 A CN202011505482 A CN 202011505482A CN 112628848 A CN112628848 A CN 112628848A
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- air conditioning
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 137
- 239000007788 liquid Substances 0.000 claims abstract description 68
- 238000005057 refrigeration Methods 0.000 claims abstract description 9
- 239000003507 refrigerant Substances 0.000 claims description 56
- 238000010438 heat treatment Methods 0.000 claims description 38
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 210000003437 trachea Anatomy 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000001704 evaporation Methods 0.000 description 10
- 230000008020 evaporation Effects 0.000 description 8
- 238000001816 cooling Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008236 heating water Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000007791 dehumidification Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/12—Hot water central heating systems using heat pumps
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The application provides an air conditioning system and a control method thereof. The air conditioning system comprises a compressor (1), a switching valve, an outdoor heat exchanger (2), a constant high-pressure pipe (3), an air pipe (4), a liquid pipe (5), an indoor unit and a water heater, wherein the constant high-pressure pipe (3) is connected to an exhaust port of the compressor (1), a first end of the water heater is connected to the constant high-pressure pipe (3), a second end of the water heater is connected to the liquid pipe (5), a first end of the indoor unit is connected to the air pipe (4), a second end of the indoor unit is connected to the liquid pipe (5), a throttling device (17) is arranged at one end, close to the outdoor heat exchanger (2), of the liquid pipe (5), and the outdoor heat. According to the air conditioning system, the quick hot water production under the refrigeration mode can be realized, and the hot water production efficiency is improved.
Description
Technical Field
The application relates to the technical field of air conditioning, in particular to an air conditioning system and a control method thereof.
Background
With the economic development and the improvement of the living standard of people, the air conditioning unit has better and better market application prospect and gradually enters more and more families and office places. At present, most air conditioners have the functions of refrigerating in summer and heating in winter to condition indoor air, particularly in summer, a large amount of heat generated by the air conditioners in the refrigerating process is discharged to outdoor air without utilization, so that heat pollution of outdoor air and great waste of energy are caused, common air conditioners are only used in winter and summer, the utilization rate is not high, meanwhile, a water heater needs to be additionally purchased in families and office places with the air conditioners to solve the problem of hot water in a living environment, the expenditure is increased, and the electric water heaters and the gas water heaters consume large energy and are poor in safety.
Many air conditioners with a hot water making function are also introduced at present, but the air conditioners can only heat hot water by using waste heat generated by the air conditioners when the air conditioners perform refrigeration, and the condensation side and the hot water side are both high pressure, so that the hot water making effect is poor.
Disclosure of Invention
Therefore, an object of the present invention is to provide an air conditioning system and a control method thereof, which can realize rapid hot water production in a cooling mode and improve hot water production efficiency.
In order to solve the above problems, the present application provides an air conditioning system including a compressor, a switching valve, an outdoor heat exchanger, a constant high pressure pipe, an air pipe, a liquid pipe, an indoor unit, and a water heater, the constant high pressure pipe being connected to an exhaust port of the compressor, a first end of the water heater being connected to the constant high pressure pipe, a second end of the water heater being connected to the liquid pipe, a first end of the indoor unit being connected to the air pipe, the second end being connected to the liquid pipe, a throttle device being provided at an end of the liquid pipe near the outdoor heat exchanger, the outdoor heat exchanger being.
Preferably, a first bypass pipe is further connected to the water heater, a first end of the first bypass pipe is connected to a first end of the water heater, and a second end of the first bypass pipe is connected to the air pipe.
Preferably, the water heater includes hot water generator, and hot water generator includes the water tank and cooperates the refrigerant heating pipe that carries out the heating with the water tank to the water tank, and the first end of refrigerant heating pipe is connected to the pipe of the constant high pressure, and the second end of refrigerant heating pipe is connected to the liquid pipe.
Preferably, the water heater includes hot water adapter, and hot water adapter includes middle heat exchanger, carries cold pipeline and refrigerant heating pipe, and the first end of refrigerant heating pipe is connected to the pipe of the constant high pressure, and the second end of refrigerant heating pipe is connected to the liquid pipe, refrigerant heating pipe and carry cold pipeline heat transfer in middle heat exchanger.
Preferably, the indoor unit comprises a first indoor unit which is a two-pipe indoor unit, a first end of the first indoor unit is connected to the air pipe, and a second end of the first indoor unit is connected to the liquid pipe.
Preferably, the indoor set includes the second indoor set, and the second indoor set is three pipe system indoor sets, and the first end of three pipe system indoor sets is connected to the trachea, and the second end is connected to the liquid pipe, and the third end is connected to the constant-voltage tube.
Preferably, a subcooler is arranged on a pipeline between the liquid pipe and the outdoor heat exchanger, and a heat absorption pipeline of the subcooler is connected to the air supplement port of the compressor.
Preferably, the switching valve comprises a first four-way valve, a first interface of the first four-way valve is connected to an exhaust port of the compressor, a second interface of the first four-way valve is connected to the outdoor heat exchanger, a third interface and a fourth interface of the first four-way valve are connected to a suction port of the compressor, and a connecting pipeline of the third interface is plugged or connected with the capillary tube.
Preferably, the switching valve includes a first three-way valve, a first port of the first three-way valve is connected to the discharge port of the compressor, a second port of the first three-way valve is connected to the outdoor heat exchanger, and a third port of the first three-way valve is connected to the suction port of the compressor.
Preferably, the switching valve further comprises a second four-way valve, a first interface of the second four-way valve is connected to an exhaust port of the compressor, a third interface of the second four-way valve is connected to the outdoor heat exchanger, a second interface and a fourth interface of the second four-way valve are connected to a suction port of the compressor, and a connecting pipeline of the second interface is plugged or connected with the capillary tube.
Preferably, the compressor comprises two compressors in parallel.
According to another aspect of the present application, there is provided a control method of the air conditioning system described above, including:
acquiring a working mode of an air conditioning system;
the switching valve is controlled according to a control mode of the air conditioning system.
Preferably, the step of controlling the switching valve according to the control mode of the air conditioning system includes:
when the air conditioning system is in a rapid water heating mode, the switching valve is controlled to be switched to a state that the outdoor heat exchanger is connected with the air suction port of the compressor, the water heater is controlled to work normally, and the indoor unit is controlled not to work;
and the refrigerant discharged by the compressor is controlled to enter the water heater through the constant high-pressure pipe, enters the liquid pipe after exchanging heat with hot water in the water heater, then enters the outdoor heat exchanger from the liquid pipe for exchanging heat, and then returns to the compressor.
Preferably, the step of controlling the switching valve according to the control mode of the air conditioning system includes:
when the air conditioning system is in a rapid water heating mode, the switching valve is controlled to be switched to a state that the outdoor heat exchanger is connected with the air suction port of the compressor, the water heater is controlled to normally work, and the indoor unit is controlled to normally work;
the refrigerant discharged by the compressor is controlled to enter the water heater through the constant high pressure pipe, enters the liquid pipe after exchanging heat with hot water in the water heater, then is divided into two paths from the liquid pipe, one path enters the outdoor heat exchanger for exchanging heat, then returns to the compressor, the other path enters the indoor unit for exchanging heat, and then returns to the compressor through the air pipe.
Preferably, the step of controlling the switching valve according to the control mode of the air conditioning system includes:
when the air conditioning system is in an independent refrigeration mode, the switching valve is controlled to be switched to a state that the outdoor heat exchanger is connected with the exhaust port of the compressor, and the water heater is controlled to stop working;
the refrigerant discharged by the compressor is controlled to enter the liquid pipe after being subjected to heat exchange by the outdoor heat exchanger, then enters the indoor unit from the liquid pipe for heat exchange, and then returns to the compressor through the air pipe.
Preferably, the step of controlling the switching valve according to the control mode of the air conditioning system includes:
when the air conditioning system is in a hot water making and refrigerating mode, the switching valve is controlled to be switched to a state that the outdoor heat exchanger is connected with the exhaust port of the compressor, and the water heater is controlled to work normally;
the refrigerant discharged by the compressor is controlled to be divided into two paths, one path enters the liquid pipe after being subjected to heat exchange by the outdoor heat exchanger, the other path enters the liquid pipe after being subjected to heat exchange by the water heater, and after being mixed with the refrigerant subjected to heat exchange by the outdoor heat exchanger, the refrigerant enters the indoor unit from the liquid pipe for heat exchange, and then returns to the compressor through the air pipe.
The application provides an air conditioning system, including compressor, diverter valve, outdoor heat exchanger, indoor heat exchanger, permanent high-pressure tube, trachea, liquid pipe, indoor set and water heater, permanent high-pressure tube is connected to the gas vent of compressor, and the first end of water heater is connected to permanent high-pressure tube, and the second end is connected to the liquid pipe, and the first end of indoor set is connected to the trachea, and the second end is connected to the liquid pipe, and the liquid pipe is close to the one end of outdoor heat exchanger and is provided with throttling arrangement, and outdoor heat exchanger can selectively communicate with the gas vent or the induction port of. When the air conditioning system is used for quickly heating water, the switching valve can be switched to a state that the outdoor heat exchanger is communicated with the air suction port of the compressor, so that the outdoor heat exchanger and the indoor unit are both used as evaporation sides, and only the water heater is used as a condensation side, so that the heat absorption capacity of the water heater can be improved by increasing the evaporation capacity of the evaporation side, the water heating speed of the water heater is improved, the quick heating water in a refrigeration mode is realized, and the water heating efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioning system according to an embodiment of the present application;
fig. 2 is a diagram illustrating a control method of an air conditioning system according to an embodiment of the present application.
The reference numerals are represented as:
1. a compressor; 2. an outdoor heat exchanger; 3. a constant high pressure tube; 4. an air tube; 5. a liquid pipe; 6. a first bypass pipe; 7. a hot water generator; 8. a hot water adapter; 9. a first indoor unit; 10. a second indoor unit; 11. a subcooler; 12. a first four-way valve; 13. a second four-way valve; 14. an electromagnetic valve; 15. a one-way valve; 16. an auxiliary throttle valve; 17. a throttling device.
Detailed Description
Referring to fig. 1 in combination, according to an embodiment of the present application, an air conditioning system includes a compressor 1, a switching valve, an outdoor heat exchanger 2, a constant high pressure pipe 3, an air pipe 4, a liquid pipe 5, an indoor unit, and a water heater, the constant high pressure pipe 3 is connected to an exhaust port of the compressor 1, a first end of the water heater is connected to the constant high pressure pipe 3, a second end is connected to the liquid pipe 5, a first end of the indoor unit is connected to the air pipe 4, and a second end is connected to the liquid pipe 5, an end of the liquid pipe 5 near the outdoor heat exchanger 2 is provided with a throttling device 17, and the outdoor heat exchanger 2.
When the air conditioning system performs rapid hot water production in the cooling mode, the switching valve can be switched to a state that the outdoor heat exchanger 2 is communicated with the air suction port of the compressor 1, so that the outdoor heat exchanger and the indoor unit are both used as evaporation sides, and only the water heater is used as a condensation side, so that the heat absorption capacity of the water heater can be improved by increasing the evaporation capacity of the evaporation sides, the hot water production speed of the water heater is improved, rapid hot water production in the cooling mode is realized, and the hot water production efficiency is improved.
The air conditioning system is, for example, a three-pipe multi-split air conditioner.
The water heater is also connected with a first bypass pipe 6, the first end of the first bypass pipe 6 is connected to the first end of the water heater, and the second end of the first bypass pipe 6 is connected to the air pipe 4.
In this embodiment, a solenoid valve 14 and a check valve 15 are disposed on a pipeline of the water heater connected to the constant high pressure pipe, wherein the solenoid valve 14 is used for controlling the on-off of the pipeline, and the check valve 15 is used for preventing the refrigerant from flowing reversely from the liquid pipe to the constant high pressure pipe.
An electromagnetic valve 14 and a one-way valve 15 are arranged on the first bypass pipe 6, the electromagnetic valve 14 is used for controlling the on-off of the first bypass pipe 6, and the one-way valve 15 is used for preventing the refrigerant from reversely flowing from the air pipe to the liquid pipe or the constant-pressure pipe.
The electromagnetic valve 14 and the one-way valve 15 are arranged on the connecting pipeline of the water heater, so that the working safety and reliability of the water heater can be effectively improved.
In one embodiment, the water heater comprises a hot water generator 7, the hot water generator 7 comprises a water tank and a refrigerant heating pipe matched with the water tank to heat the water tank, a first end of the refrigerant heating pipe is connected to the constant high pressure pipe 3, and a second end of the refrigerant heating pipe is connected to the liquid pipe 5. In this embodiment, the refrigerant directly releases heat and heats the water tank, can realize hydrothermal direct heating, and heating efficiency is high.
In one embodiment, the water heater comprises a hot water adapter 8, the hot water adapter 8 comprises an intermediate heat exchanger, a cold-carrying pipeline and a refrigerant heating pipe, a first end of the refrigerant heating pipe is connected to the constant high pressure pipe 3, a second end of the refrigerant heating pipe is connected to the liquid pipe 5, and the refrigerant heating pipe and the cold-carrying pipeline exchange heat in the intermediate heat exchanger. In this embodiment, the refrigerant releases heat to heat the water flowing through the cold-carrying pipeline of the intermediate heat exchanger, and then the water at other positions is heated by the water in the cold-carrying pipeline, so as to realize indirect heating of the water heater.
In one embodiment, the water heater may include both the hot water generator 7 and the hot water adapter 8, which may be arranged in parallel, so as to implement multi-mode water heating, and the user may select a hot water heating mode according to the need.
In one embodiment, the indoor unit comprises a first indoor unit 9, the first indoor unit 9 is a two-pipe indoor unit, the first indoor unit 9 is connected to the air pipe 4 at a first end and to the liquid pipe 5 at a second end. In this embodiment, the first indoor unit is a common indoor unit and participates in the indoor temperature adjustment of the air conditioning system.
In one embodiment, the indoor unit includes a second indoor unit 10, the second indoor unit 10 is a three-pipe indoor unit, a first end of the three-pipe indoor unit is connected to the air pipe 4, a second end of the three-pipe indoor unit is connected to the liquid pipe 5, and a third end of the three-pipe indoor unit is connected to the constant-pressure pipe 3. The pipeline of the three-pipe internal machine connected to the constant high-pressure pipe 3 can be provided with a heat exchanger, so that the dehumidification function can be realized by utilizing the three-pipe internal machine.
In this embodiment, the third end of the second indoor unit 10 is connected to the constant high pressure pipe 3, and in order to avoid the problem of refrigerant backflow, an electromagnetic valve 14 and a check valve 15 are disposed on a pipeline of the second indoor unit connected to the constant high pressure pipe 3, wherein the electromagnetic valve 14 is used for controlling the on-off of the pipeline, and the check valve 15 is used for preventing the refrigerant from flowing reversely from the liquid pipe to the constant high pressure pipe 3.
A second bypass pipe is arranged between a pipeline of the second indoor unit 10 connected to the constant high pressure pipe 3 and the air pipe 4, an electromagnetic valve 14 and a one-way valve 15 are arranged on the second bypass pipe, the electromagnetic valve 14 is used for controlling the on-off of the second bypass pipe, and the one-way valve 15 is used for preventing the refrigerant from reversely flowing from the air pipe to the liquid pipe or the constant high pressure pipe.
In one embodiment, the indoor unit includes a first indoor unit 9 and a second indoor unit 10, the first indoor unit 9 and the second indoor unit 10 are arranged in parallel, and the working indoor units can be selected according to needs to realize different working requirements.
A subcooler 11 is arranged on a pipeline between the liquid pipe 5 and the outdoor heat exchanger 2, and a heat absorption pipeline of the subcooler 11 is connected to an air supplement port of the compressor 1. The subcooler 11 can subcool a refrigerant flowing through the indoor unit in a cooling state, thereby increasing the cooling capacity of the indoor unit. The auxiliary throttle valve 16 is arranged on the heat absorption pipeline of the subcooler 11 and can throttle the refrigerant in the heat absorption pipeline, so that the heat absorption capacity of the refrigerant in the heat absorption pipeline is increased, the subcooling effect of the refrigerant flowing through the subcooler is enhanced, and the evaporation capacity and the refrigerating capacity of the indoor unit are improved.
In one embodiment, the switching valve includes a first four-way valve 12, a first port D of the first four-way valve 12 is connected to an exhaust port of the compressor 1, a second port C of the first four-way valve 12 is connected to the outdoor heat exchanger 2, a third port E and a fourth port S of the first four-way valve 12 are connected to a suction port of the compressor 1, and a connection pipeline of the third port E is blocked or connected with a capillary tube. Because the connecting pipeline of the third interface E is blocked or connected with the capillary tube, when the first interface D is communicated with the third interface E, the refrigerant bypass loss through the third interface E is basically negligible.
The switching valve further comprises a second four-way valve 13, a first interface D of the second four-way valve 13 is connected to an exhaust port of the compressor 1, a third interface E of the second four-way valve 13 is connected to the outdoor heat exchanger 2, a second interface C and a fourth interface S of the second four-way valve 13 are connected to an air suction port of the compressor 1, and a connecting pipeline of the second interface C is plugged or connected with a capillary tube.
The second four-way valve 13 controls the indoor unit to switch to the evaporating or condensing side, and the first four-way valve 12 controls the outdoor heat exchanger 2 to switch to the evaporating or condensing side.
In one embodiment, the switching valve includes a first three-way valve, a first port D of which is connected to the discharge port of the compressor 1, a second port C of which is connected to the outdoor heat exchanger 2, and a third port E of which is connected to the suction port of the compressor 1.
The compressor 1 comprises two compressors connected in parallel, one of the compressors is a variable-frequency variable-capacity compressor, and the working frequency and the volume of the compressor can be adjusted, so that the air conditioning system can have better working energy efficiency, is more flexible to adjust, and is more accurate to control.
Referring to fig. 2 in combination, according to an embodiment of the present application, the control method of the air conditioning system includes: acquiring a working mode of an air conditioning system; the switching valve is controlled according to a control mode of the air conditioning system.
The step of controlling the switching valve according to the control mode of the air conditioning system includes: when the air conditioning system is in a rapid water heating mode, the switching valve is controlled to be switched to a state that the outdoor heat exchanger 2 is connected with the air suction port of the compressor 1, the water heater is controlled to work normally, and the indoor unit is controlled not to work; the refrigerant discharged by the compressor 1 is controlled to enter the water heater through the constant high pressure pipe 3, and enters the liquid pipe 5 after exchanging heat with hot water in the water heater, and then enters the outdoor heat exchanger 2 from the liquid pipe 5 to exchange heat, and then returns to the compressor 1.
The step of controlling the switching valve according to the control mode of the air conditioning system includes: when the air conditioning system is in a rapid water heating mode, the switching valve is controlled to be switched to a state that the outdoor heat exchanger 2 is connected with the air suction port of the compressor 1, the water heater is controlled to normally work, and the indoor unit is controlled to normally work; the refrigerant discharged by the compressor 1 is controlled to enter the water heater through the constant high pressure pipe 3, enters the liquid pipe 5 after exchanging heat with hot water in the water heater, then is divided into two paths from the liquid pipe 5, one path enters the outdoor heat exchanger 2 for exchanging heat, then returns to the compressor 1, the other path enters the indoor unit for exchanging heat, and then returns to the compressor 1 through the air pipe 4.
When the rapid heating of water is performed, the first indoor unit 9 or the second indoor unit 10 is normally cooled or does not operate. The hot water generator 7 or the hot water adaptor 8 is activated to heat the hot water in the water tank. The first four-way valve 12 is electrified, the second four-way valve 13 is not electrified, all high-temperature and high-pressure refrigerants discharged by the compressor 1 enter the constant high-pressure pipe 3, hot water is produced through the hot water generator 7 or the hot water adapter 8 and then passes through the liquid pipe 5, if the first indoor unit 9 works, one part of the refrigerants can be evaporated through the first indoor unit 9, and the other part of the refrigerants can be evaporated through the outdoor heat exchanger. This kind of mode realizes making hot water fast through increaseing the evaporation capacity.
The step of controlling the switching valve according to the control mode of the air conditioning system includes: when the air conditioning system is in an independent refrigeration mode, the switching valve is controlled to be switched to a state that the outdoor heat exchanger 2 is connected with the exhaust port of the compressor 1, and the water heater is controlled to stop working; the refrigerant discharged from the compressor 1 is controlled to enter the liquid pipe 5 after being subjected to heat exchange by the outdoor heat exchanger 2, then enters the indoor unit from the liquid pipe 5 for heat exchange, and then returns to the compressor 1 through the air pipe 4.
The step of controlling the switching valve according to the control mode of the air conditioning system includes: when the air conditioning system is in a hot water making and refrigerating mode, the switching valve is controlled to be switched to a state that the outdoor heat exchanger 2 is connected with the exhaust port of the compressor 1, and the water heater is controlled to work normally; the refrigerant discharged by the compressor 1 is controlled to be divided into two paths, one path enters the liquid pipe 5 after being subjected to heat exchange through the outdoor heat exchanger 2, the other path enters the liquid pipe 5 after entering the water heater for heat exchange through the constant high pressure pipe 3, and after being mixed with the refrigerant after the heat exchange of the outdoor heat exchanger 2, the refrigerant enters the indoor unit from the liquid pipe 5 for heat exchange, and then returns to the compressor 1 through the air pipe 4.
Through the control mode, the modes such as rapid hot water making, independent refrigeration, simultaneous hot water making and refrigeration and the like can be rapidly switched under the refrigeration mode, the working efficiency of the air conditioning system is improved, and the working mode of the air conditioning system is expanded.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (16)
1. An air conditioning system, characterized by, including compressor (1), diverter valve, outdoor heat exchanger (2), constant high-pressure pipe (3), trachea (4), liquid pipe (5), indoor set and water heater, constant high-pressure pipe (3) are connected to the gas vent of compressor (1), the first end of water heater is connected to constant high-pressure pipe (3), the second end is connected to liquid pipe (5), the first end of indoor set is connected to trachea (4), the second end is connected to liquid pipe (5), the one end that liquid pipe (5) are close to outdoor heat exchanger (2) is provided with throttling arrangement (17), outdoor heat exchanger (2) can selectively with the gas vent or the induction port intercommunication of compressor (1) through the diverter valve.
2. Air conditioning system according to claim 1, characterized in that a first bypass pipe (6) is further connected to the water heater, a first end of the first bypass pipe (6) being connected to a first end of the water heater, a second end of the first bypass pipe (6) being connected to the air pipe (4).
3. Air conditioning system according to claim 1, wherein the water heater comprises a hot water generator (7), the hot water generator (7) comprising a water tank and a refrigerant heating pipe cooperating with the water tank for heating the water tank, a first end of the refrigerant heating pipe being connected to the eh (3) pipe and a second end of the refrigerant heating pipe being connected to the liquid pipe (5).
4. The air conditioning system as claimed in claim 1, wherein the water heater comprises a hot water adapter (8), the hot water adapter (8) comprises an intermediate heat exchanger, a cold carrying pipeline and a refrigerant heating pipe, a first end of the refrigerant heating pipe is connected to the constant-pressure pipe (3), a second end of the refrigerant heating pipe is connected to the liquid pipe (5), and the refrigerant heating pipe and the cold carrying pipeline exchange heat in the intermediate heat exchanger.
5. Air conditioning system according to claim 1, characterized in that said indoor unit comprises a first indoor unit (9), said first indoor unit (9) being a two-pipe unit, said first indoor unit (9) being connected at a first end to said air pipe (4) and at a second end to said liquid pipe (5).
6. Air conditioning system according to claim 1, characterized in that said indoor unit comprises a second indoor unit (10), said second indoor unit (10) being a three-pipe indoor unit, a first end of which is connected to said air pipe (4), a second end of which is connected to said liquid pipe (5), and a third end of which is connected to said pipe (3).
7. Air conditioning system according to claim 1, characterized in that a subcooler (11) is arranged in the line between the liquid pipe (5) and the outdoor heat exchanger (2), the heat absorption line of the subcooler (11) being connected to the supplementary air port of the compressor (1).
8. Air conditioning system according to claim 1, wherein the switching valve comprises a first four-way valve (12), a first interface of the first four-way valve (12) is connected to an exhaust port of the compressor (1), a second interface of the first four-way valve (12) is connected to the outdoor heat exchanger (2), a third interface and a fourth interface of the first four-way valve (12) are connected to an air suction port of the compressor (1), and a connecting pipeline of the third interface is blocked or connected with a capillary tube.
9. Air conditioning system according to claim 1, characterized in that the switching valve comprises a first three-way valve, a first interface of which is connected to the discharge of the compressor (1), a second interface of which is connected to the outdoor heat exchanger (2), and a third interface of which is connected to the suction of the compressor (1).
10. Air conditioning system according to claim 8, wherein the switching valve further comprises a second four-way valve (13), a first port of the second four-way valve (13) is connected to the exhaust port of the compressor (1), a third port of the second four-way valve (13) is connected to the outdoor heat exchanger (2), a second port and a fourth port of the second four-way valve (13) are connected to the suction port of the compressor (1), and a connecting pipeline of the second port is blocked or connected with a capillary tube.
11. Air conditioning system according to claim 1, characterized in that the compressor (1) comprises two compressors in parallel.
12. A control method of an air conditioning system as claimed in any one of claims 1 to 11, characterized by comprising:
acquiring a working mode of an air conditioning system;
the switching valve is controlled according to a control mode of the air conditioning system.
13. The control method according to claim 12, wherein the step of controlling the switching valve according to the control mode of the air conditioning system includes:
when the air conditioning system is in a rapid water heating mode, the switching valve is controlled to be switched to a state that the outdoor heat exchanger (2) is connected with the air suction port of the compressor (1), the water heater is controlled to work normally, and the indoor unit is controlled not to work;
the refrigerant discharged by the compressor (1) is controlled to enter the water heater through the constant high pressure pipe (3), and enters the liquid pipe (5) after exchanging heat with hot water in the water heater, and then enters the outdoor heat exchanger (2) from the liquid pipe (5) for exchanging heat, and then returns to the compressor (1).
14. The control method according to claim 12, wherein the step of controlling the switching valve according to the control mode of the air conditioning system includes:
when the air conditioning system is in a rapid water heating mode, the switching valve is controlled to be switched to a state that the outdoor heat exchanger (2) is connected with the air suction port of the compressor (1), the water heater is controlled to normally work, and the indoor unit is controlled to normally work;
the refrigerant discharged by the compressor (1) is controlled to enter the water heater through the constant high pressure pipe (3), enters the liquid pipe (5) after exchanging heat with hot water in the water heater, then is divided into two paths from the liquid pipe (5), one path enters the outdoor heat exchanger (2) for exchanging heat, then returns to the compressor (1), the other path enters the indoor unit for exchanging heat, and then returns to the compressor (1) through the air pipe (4).
15. The control method according to claim 12, wherein the step of controlling the switching valve according to the control mode of the air conditioning system includes:
when the air conditioning system is in an independent refrigeration mode, the switching valve is controlled to be switched to a state that the outdoor heat exchanger (2) is connected with the exhaust port of the compressor (1), and the water heater is controlled to stop working;
the refrigerant discharged by the compressor (1) is controlled to enter the liquid pipe (5) after being subjected to heat exchange by the outdoor heat exchanger (2), then enters the indoor unit from the liquid pipe (5) for heat exchange, and then returns to the compressor (1) through the air pipe (4).
16. The control method according to claim 12, wherein the step of controlling the switching valve according to the control mode of the air conditioning system includes:
when the air conditioning system is in a hot water making and refrigerating mode, the switching valve is controlled to be switched to a state that the outdoor heat exchanger (2) is connected with the exhaust port of the compressor (1), and the water heater is controlled to work normally;
the refrigerant discharged by the compressor (1) is controlled to be divided into two paths, one path of refrigerant enters the liquid pipe (5) after being subjected to heat exchange by the outdoor heat exchanger (2), the other path of refrigerant enters the liquid pipe (5) after being subjected to heat exchange by the water heater, and after being mixed with the refrigerant after being subjected to heat exchange by the outdoor heat exchanger (2), the refrigerant enters the indoor unit from the liquid pipe (5) for heat exchange, and then returns to the compressor (1) through the air pipe (4).
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| CN202011505482.8A CN112628848A (en) | 2020-12-18 | 2020-12-18 | Air conditioning system and control method thereof |
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Application publication date: 20210409 |