CN218672639U - Heat pump air conditioner water heater suitable for cold area - Google Patents
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- CN218672639U CN218672639U CN202223204266.7U CN202223204266U CN218672639U CN 218672639 U CN218672639 U CN 218672639U CN 202223204266 U CN202223204266 U CN 202223204266U CN 218672639 U CN218672639 U CN 218672639U
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Abstract
The utility model discloses a heat pump air conditioner water heater suitable for cold areas relates to heat pump technical field, including compression system, hot water system, indoor heat transfer system and outdoor heat transfer system, its characterized in that: branch pipelines are arranged among the compression system, the hot water system, the indoor heat exchange system and the outdoor heat exchange system and are connected with one another; by flexibly utilizing the switching of the valve group, the mutual conversion of the primary compression and the secondary compression of the compressor and the switching of various modes are realized aiming at different working conditions, so that different heat supply, heating and hot water requirements in winter and summer in cold regions are met simultaneously; when heating in winter, the evaporating temperature of the heat exchanger can be increased by using high-temperature hot water in an indoor water tank to perform two-stage compression defrosting, the defrosting temperature is increased to perform efficient defrosting, and the defrosting energy consumption of the system is reduced; when the system refrigerates indoors in summer, the system efficiently recovers heat for hot water preparation through reasonable arrangement, and the system has the concept of energy conservation and environmental protection.
Description
Technical Field
The utility model relates to a heat pump technical field especially relates to a heat pump air conditioner water heater suitable for cold areas.
Background
At present, the traditional heat supply in cold areas of China is mostly in the form of fuel oil and coal-fired boilers, a large amount of fossil fuel is consumed, the heat efficiency is low, and a large amount of waste gas is discharged. The heating modes developed for the method are heat pump heating, electric boilers, gas boilers and the like. The heat pump air conditioner has a heating principle similar to that of a refrigeration cycle, consumes a part of energy, and continuously transmits heat from a low-temperature heat source to a high-temperature heat source, so that the purposes of refrigeration and heating are achieved. The demand of domestic hot water in heating is great, but the gas water heater on the market at present is fast in temperature rise and good in economy, but the heat efficiency is low, and gas is discharged, so that potential safety hazards exist; the electric water heater is convenient to install and use, has higher market share, has higher thermal efficiency of directly heating by using electric energy, but has the primary energy utilization rate of only about 30 percent; the solar water heater is energy-saving, safe and environment-friendly, has a large market share, is difficult to maintain and install, cannot be used in all weather, has non-adjustable heating capacity, and can meet normal requirements only by the aid of gas and an electric water heater. The heat pump water heater can completely meet the requirement of domestic hot water, the primary energy utilization rate is higher than that of an electric water heater and a gas water heater, the heat pump water heater can also run in all weather, and the heat pump water heater is widely applied to the middle and lower reaches of the Yangtze river and the areas in the south. When a common air source heat pump air conditioner is applied to a cold area for heating, the surface of an outdoor heat exchanger of the air conditioner can generate a frosting phenomenon due to the reduction of the outdoor environment temperature, and then the heating effect of the air conditioning unit is deteriorated. The specific air suction volume of the working medium is increased, the air suction volume is rapidly reduced, and the heating capacity is reduced. The suction pressure decreases, which increases the compression ratio of the compressor and causes a rapid rise in the exhaust temperature. The lubrication of the compressor is seriously influenced, the system is frequently started and stopped, and the normal operation cannot be realized. This situation seriously hinders the popularization and application of the energy-saving heat pump air conditioner in cold regions.
The heat pump air conditioner on the market today has some drawbacks: firstly, the existing heat pump air conditioner has a single mode, and only can realize heating and water heating; hot water; refrigeration, the use scene is limited and the use cannot be mixed; and under the condition of higher outlet water temperature, the low-temperature starting of the compressor of the traditional single-stage equipment such as the air source heat pump is difficult, and the temperature rise of the system is insufficient; the surface of the heat exchanger of the outdoor unit is condensed into frost, and the frost layer is gradually thickened after the time is long, so that the normal work of the heat exchanger is influenced. In view of the above situation, CN101165438A discloses an ultralow temperature heat pump air conditioning system, which can work in a low temperature environment, but has a complex structure and a high manufacturing cost; CN203336739U discloses a method for defrosting by spraying with unfrozen liquid, which has low efficiency of defrosting by spraying water, large energy consumption and easy water pollution; CN104089443A discloses an electric heating defrosting device which has large power consumption and low efficiency. CN101532705A provides a bypass defrosting, in which a part of high-temperature working medium steam discharged from the compressor enters the outdoor heat exchanger through a bypass branch, so that the flow rate of the working medium involved in heating is reduced, which causes the problems of insufficient heat of the air conditioning system during defrosting, unstable heat supply and waste of energy waste.
In summary, a heat pump air-conditioning water heater suitable for cold regions is provided to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a heat pump air conditioner water heater suitable for cold areas has solved the above-mentioned technical problem who proposes.
In order to solve the technical problem, the utility model provides a pair of heat pump air conditioner water heater suitable for cold areas, including compression system, hot water system, indoor heat transfer system and outdoor heat transfer system, its characterized in that: branch pipelines are arranged among the compression system, the hot water system, the indoor heat exchange system and the outdoor heat exchange system and are connected with one another, and an expansion valve and a four-way reversing valve are arranged on each branch pipeline;
the compression system comprises a first compressor, a second compressor, a first three-way valve, a second three-way valve and a third three-way valve, wherein an a three-way end and a b three-way end are arranged in the compression system, a lower end pipeline of the a three-way end is connected with a C channel of the four-way reversing valve, a right end pipeline of the a three-way end is connected with an inlet of the second compressor, a left end pipeline of the a three-way end is connected with a right port of the three-way valve, a left end pipeline of the three-way valve is connected with an upper port of the b three-way end, an upper port pipeline of the first three-way valve is connected with a lower inlet of the first compressor, an upper outlet pipeline of the first compressor is connected with a left port of the two three-way valve, an upper port pipeline of the two three-way valve is connected with an A port of the four-way reversing valve, a lower port pipeline of the two three-way valve is connected with a right port of the b three-way end, and a lower port pipeline of the b three-way end is connected with an upper outlet of the second compressor;
the hot water system comprises a first heat exchanger, a water using tank, a reversing water pump, a three-way valve III, a three-way valve IV and a hot water valve, wherein the three upper port of the three-way valve is connected with an upper branch pipeline, the left side of the three-way valve is connected with a D port of the four-way reversing valve, the right side of the three-way valve is connected with an indoor heat exchange system pipeline, the three lower port of the three-way valve is connected with a first heat exchanger working medium inlet, a first heat exchanger working medium outlet pipeline is connected with the four upper port of the three-way valve, the four lower port of the three-way valve is connected with a lower branch pipeline, the left side of the three-way valve is connected with a right port of an expansion valve, the right side of the three-way valve is connected with an indoor heat exchange system, a water path is arranged on one side in the first heat exchanger and is connected with an internal heat exchange part in parallel, the reversing water pump is arranged at a water path inlet of the water using tank and is connected with a pipeline of the three-way valve;
the indoor heat exchange system comprises a second heat exchanger, a third heat exchanger, a first two-way valve, a second two-way valve, a third two-way valve and a fourth two-way valve, wherein an upper port pipeline of the first two-way valve is connected with an upper branch pipeline, the left side of the first two-way valve is connected with a right port of the third three-way valve in the hot water system, the right side of the first two-way valve is connected with an upper port of the second two-way valve, a lower port pipeline of the second two-way valve is connected with an upper port of the second two-way valve, a lower port of the second two-way valve is connected with a lower branch pipeline, the left side of the second two-way valve is connected with a fourth lower port of the three-way valve, the right side of the second two-way valve is connected with a fourth upper port pipeline of the second heat exchanger, and an upper inlet pipeline of the third heat exchanger is connected with a third lower port of the two-way valve;
outdoor heat transfer system includes fourth heat exchanger, six three-way valves and five three-way valves, six left port pipe connections four-way reversing valve's of three-way valve B mouth, and six last port pipe connections of three-way valve left port among the hot-water heating system, six right port pipe connections of three-way valve left side export of fourth heat exchanger, and the right import pipe connection five left port of three-way valve of fourth heat exchanger, port and the hot-water heating system in five last ports of three-way valve left port pipe connections of four-way valve, and five right ports and the expansion valve left port pipe connection of three-way valve.
Preferably, the water inlet of the water tank is connected with one end of the internal water side waterway through the reversing water pump, the water tank is provided with two outlets, one outlet is connected with the other end of the internal water side waterway of the first heat exchanger through a pipeline, the other outlet is connected with a pipeline, a hot water valve is arranged on the pipeline, and the water tank is connected with an external tap water pipeline.
Preferably, the total system consisting of the compression system, the hot water system, the indoor heat exchange system and the outdoor heat exchange system has a primary heating and water heating mode, a secondary heating and water heating mode, a primary refrigerating and water heating mode, a secondary refrigerating and water heating mode and an outdoor energy-saving defrosting mode.
Preferably, in the first-stage heating and water heating mode, the connecting pipeline of the first three-way valve and the second compressor, the connecting pipeline of the third three-way valve and the sixth three-way valve, and the connecting pipeline of the fourth three-way valve and the fifth three-way valve are closed, the paths B-C and A-D of the four-way reversing valve are opened, and the paths A-B and D-C of the four-way reversing valve are closed.
Preferably, in the two-stage heating and water heating mode, the six connecting pipeline of the three-way valve and the five connecting pipeline of the four-way valve and the three-way valve are closed, the paths B-C and A-D of the four-way reversing valve are opened, and the paths A-B and D-C are closed, wherein at the moment, the first compressor and the second compressor are connected in series in the compression system to form two-stage compression.
Preferably, in the first-stage refrigeration and water heating mode, the connecting pipeline of the first three-way valve and the second compressor, the connecting pipeline of the third three-way valve and the sixth three-way valve, and the connecting pipeline of the fourth three-way valve and the fifth three-way valve are closed, the paths A-B and C-D of the four-way reversing valve are opened, and the paths A-D and B-C of the four-way reversing valve are closed.
Preferably, in the two-stage refrigeration and water heating mode, the pipeline between the first three-way valve and the three-way end a, the pipeline between the second three-way valve and the three-way end B, the connecting pipeline between the sixth three-way valve and the fifth three-way valve, the connecting pipeline between the fourth three-way valve and the lower branch and the connecting pipeline between the third three-way valve and the branch are closed, the paths A-B and C-D of the four-way reversing valve are opened, and the paths A-D and B-C of the four-way reversing valve are closed.
Preferably, in the defrosting mode, the pipeline of the first three-way valve and the pipeline of the third-way end a are closed, the pipeline of the second three-way valve and the pipeline of the third three-way end B are closed, the pipeline of the third three-way valve and the six-way valve and the pipeline of the fourth three-way valve and the five-way valve are closed, the paths A-B and C-D of the four-way reversing valve are opened, and the paths A-D and B-C of the four-way reversing valve are closed.
Compared with the prior art, the utility model provides a pair of heat pump air conditioner water heater suitable for cold areas has following beneficial effect:
the utility model provides a, through the switching of nimble valves that utilizes, to the switching of the mutual transformation of different operating mode realization compressor one-level compression and second grade compression and multiple mode satisfy heat supply, heating, the hot water demand that cold area winter and summer are different simultaneously.
The utility model provides a, when heating winter outdoor because some reasons of environment and system take place to frost, freeze inconvenient evaporating temperature that the system accessible of clearing up utilized indoor water tank high temperature hot water to improve the heat exchanger of inconvenient carrying on and carry out doublestage compression defrosting, carry out high-efficient defrosting through improving defrosting temperature to the defrosting energy consumption of system has been reduced.
The utility model provides a, the system is because heat pump system need carry out the waste that the condensation is exothermic to outdoor through the heat exchanger and causes the energy when indoor refrigeration in summer, and the system has been retrieved the heat through reasonable arranging the high efficiency and has been used for hot water preparation, has energy-conservation, environmental protection concept.
Drawings
Fig. 1 is a schematic view of the total flow of the heat pump air-conditioning water heater system integrally used in cold regions of the present invention;
FIG. 2 is a schematic flow chart of a primary heating and water-heating mode system of the present invention;
FIG. 3 is a schematic flow chart of the two-stage heating and hot water heating mode system of the present invention;
fig. 4 is a schematic flow chart of a primary refrigeration and heating water mode system of the present invention;
fig. 5 is a schematic flow diagram of the two-stage refrigeration and hot water mode system of the present invention;
fig. 6 is a schematic view of the defrosting mode system of the present invention.
Reference numbers in the figures: 1. a first compressor; 2. a second compressor; 3. a first heat exchanger; 4. a second heat exchanger; 5. a third heat exchanger; 6. an expansion valve; 7. a fourth heat exchanger; 8. a four-way reversing valve; 9. a water tank; 10. a reversing water pump; 11. a first three-way valve; 12. a second three-way valve; 13. a third three-way valve; 14. a third valve; 15. a first two-way valve; 16. a second two-way valve; 17. a two-way valve III; 18. a second valve; 19. a third valve; 20. a third valve; 21. a hot water valve.
Detailed Description
In a first embodiment, as shown in fig. 1, a heat pump air-conditioning water heater suitable for cold regions includes a compression system, a hot water system, an indoor heat exchange system and an outdoor heat exchange system, and is characterized in that: branch pipelines are arranged among the compression system, the hot water system, the indoor heat exchange system and the outdoor heat exchange system and are connected with one another, and an expansion valve 6 and a four-way reversing valve 8 are arranged on the branch pipelines;
the compression system comprises a compressor I1, a compressor II 2, a three-way valve I11, a three-way valve II 12 and a three-way valve III 13, wherein an a three-way end and a b three-way end are arranged in the compression system, a pipeline at the lower end of the a three-way end is connected with a C channel of a four-way reversing valve 8, a pipeline at the right end of the a three-way end is connected with an inlet of the compressor II 2, a pipeline at the left end of the a three-way end is connected with a right port of the three-way valve I11, a pipeline at the left port of the three-way valve I11 is connected with an upper port of the b three-way end, a pipeline at the upper port of the three-way valve I11 is connected with a lower inlet of the compressor I1, a pipeline at the upper port of the compressor I1 is connected with a left port of the three-way valve II 12, a pipeline at the upper port of the three-way valve II 12 is connected with an A port of the four-way reversing valve 8, a pipeline at the lower port of the three-way valve II 12 is connected with a right port of the b three-way end, and a pipeline at the lower port of the b three-way end is connected with an upper outlet of the compressor II 2;
the hot water system comprises a first heat exchanger 3, a water using tank 9, a reversing water pump 10, a three-way valve 13, a three-way valve 14 and a hot water valve 21, wherein the upper port of the three-way valve 13 is connected with an upper branch pipeline, the left side of the three-way valve is connected with a D port of a four-way reversing valve 8, the right side of the three-way valve is connected with an indoor heat exchange system pipeline, the lower port of the three-way valve 13 is connected with a working medium inlet of the first heat exchanger 3, a working medium outlet pipeline of the first heat exchanger 3 is connected with the upper port of the four-way valve 14, the lower port of the four-way valve 14 is connected with a lower branch pipeline, the left side of the four-way valve is connected with a right port of an expansion valve 6, the right side of the indoor heat exchange system is connected with the indoor heat exchange system, one side of the first heat exchanger 3 is a water side water channel and is connected with an internal heat exchange component in parallel, the water using tank 10 is arranged at a water inlet of the water using tank 9, and the left port of the three-way valve 13 is connected with the indoor heat exchange system pipeline;
the indoor heat exchange system comprises a second heat exchanger 4, a third heat exchanger 5, a first two-way valve 15, a second two-way valve 16, a third two-way valve 17 and a fourth two-way valve 18, wherein an upper port pipeline of the first two-way valve 15 is connected with an upper branch pipeline, the left side of the upper port pipeline is connected with a right port of a third three-way valve 13 in the hot water system, the right side of the upper port pipeline is connected with an upper port of the third two-way valve 17, a lower port pipeline of the first 15 lower port of the second two-way valve is connected with an upper inlet of the second heat exchanger 4, a lower outlet pipeline of the second heat exchanger 4 is connected with an upper port of the second 16, a lower port of the second 16 lower port pipeline is connected with a lower branch pipeline, the left side of the lower port of the fourth 14 three-way valve is connected with a lower port of the fourth two-way valve 18, an upper port pipeline of the fourth 18 two-way valve is connected with a lower outlet of the third heat exchanger 5, and an upper port pipeline of the third heat exchanger 5 is connected with a lower port of the third 17;
the outdoor heat exchange system comprises a fourth heat exchanger 7, a three-way valve six 20 and a three-way valve five 19, wherein a left port of the three-way valve six 20 is connected with a port B of a four-way reversing valve 8 through a pipeline, an upper port of the three-way valve six 20 is connected with a left port of a three-way valve three 13 in the hot water system through a pipeline, a right port of the three-way valve six 20 is connected with a left outlet of the fourth heat exchanger 7 through a pipeline, a right inlet of the fourth heat exchanger 7 is connected with a left port of the three-way valve five 19, an upper port of the three-way valve five 19 is connected with a left port of a three-way valve four 14 in the hot water system through a pipeline, and a right port of the three-way valve five 19 is connected with a left port of an expansion valve 6 through a pipeline.
Wherein, the water inlet of the water tank 9 is connected with one port of the water channel of the water side inside the first heat exchanger 3 through the reversing water pump 10, the water tank 9 is provided with two outlets, one outlet is connected with the pipeline of the other port of the water channel of the water side inside the first heat exchanger 3, the other outlet is connected with the pipeline, a hot water valve 21 is arranged on the pipeline, and the water tank 9 is connected with an external tap water pipeline.
The overall system consisting of the compression system, the hot water system, the indoor heat exchange system and the outdoor heat exchange system is provided with a primary heating and water heating mode, a secondary heating and water heating mode, a primary refrigerating and water heating mode, a secondary refrigerating and water heating mode and an outdoor energy-saving defrosting mode.
In the second embodiment, based on the first embodiment, as shown in fig. 2, in the first-stage heating and water heating mode, the connection pipeline between the first three-way valve 11 and the second compressor 2, the connection pipeline between the third three-way valve 13 and the sixth three-way valve 20, and the connection pipeline between the fourth three-way valve 14 and the fifth three-way valve 19 are closed, the paths B-C and a-D of the four-way reversing valve 8 are opened, and the paths a-B and D-C of the four-way reversing valve 8 are closed.
Specifically, a working medium exchanges heat with outdoor air through a fourth heat exchanger 7, then passes through a third valve six, enters a compression system through D-C of a four-way reversing valve 8, is compressed and then flows out of the upper part of a second three-way valve 12, enters an indoor heat exchange system through A-D of the four-way reversing valve 8 and is divided into two paths to exchange heat with the hot water system, one path of the working medium entering the hot water system enters a first heat exchanger 3 through a third three-way valve 13 to exchange heat with a water path on the other side to prepare hot water, then enters a third three-way valve four 14 to flow out, enters the system through a fifth three-way valve through one path to exchange heat with a second heat exchanger 4 of a first room, then flows out of the second three-way valve 16, and the other path of the working medium enters a third heat exchanger 5 of the second room through a second three-way valve 17 to exchange heat and supply heat, then flows out of the fourth three-way valve four 14 to be mixed, flows into an expansion valve 6 to be throttled and depressurized, then flows into the fourth heat exchanger 7 of the outdoor heat exchange system to exchange heat, and then flows into a B-C of the four-way reversing valve 8 through a sixth three-way valve 20 to flow into the compression system to be compressed, so as to complete a primary circulation; each heating heat exchanger is independent according to the requirement; and heating of the room two is stopped by closing the two-way valve three 17 and the two-way valve four 18, heating of the room one can be stopped by closing the two-way valve one 15 and the two-way valve two 16, and heating of water can be stopped by closing the three-way valve three 13 and the three-way valve four 14.
In this embodiment, as shown in fig. 3, in the two-stage heating and water heating mode, the connection pipeline between the three-way valve three 13 and the three-way valve six 20 and the connection pipeline between the three-way valve four 14 and the three-way valve five 19 are closed, the paths B-C and a-D of the four-way reversing valve 8 are opened, and the paths a-B and D-C are closed, where the first compressor 1 and the second compressor 2 in the compression system are connected in series to form the two-stage compression.
Specifically, in this mode, the implementation is the same as the hot water system, the indoor heat exchange system, and the outdoor heat exchange system in the first-stage heating and hot water heating mode, except that the compressors of the first compressor 1 and the second compressor 2 are arranged in a series-connected two-stage compression.
In the third embodiment, based on the first embodiment, as shown in fig. 4, in the first-stage cooling and heating water mode, the connection pipeline between the first three-way valve 11 and the second compressor 2, the connection pipeline between the third three-way valve 13 and the sixth three-way valve 20, and the connection pipeline between the fourth three-way valve 14 and the fifth three-way valve 19 are closed, the paths a-B and C-D of the four-way reversing valve 8 are opened, and the paths a-D and B-C of the four-way reversing valve 8 are closed.
Specifically, the compressed high-temperature high-pressure overheated working medium enters a six-way valve 20 through a four-way reversing valve 8A-B, then enters a first heat exchanger 3 from a three-way valve 13 to exchange heat with another water side water path to prepare hot water, then enters a four-way valve 14 to flow out to become an overcooled working medium, enters an expansion valve 6 from the right side of a five-way valve 19 to perform throttling and pressure reduction after entering a five-way valve 19, the working medium is changed into a low-temperature low-pressure two-phase working medium and then enters an indoor heat exchange system to be divided into two ways, one way of working medium enters a second heat exchanger 4 which enters a first room through a two-way valve 16 to exchange heat and refrigerate, the temperature of the room is reduced, and then the working medium flows out from a first two-way valve 15; the other path of working medium enters a third heat exchanger 5 of a second room through a four-way valve 18 to exchange heat and refrigerate, the temperature of the second room is reduced, the working medium flows out, the two paths of working media are mixed, then flow into a D-C of a four-way reversing valve 8 and then flow into a compression system to be compressed, and therefore the system completes primary circulation; each heating heat exchanger is independent according to the requirement; the cooling of the room two can also be stopped by closing the two-way valve three 17 and the two-way valve four 18, and similarly, the cooling of the room one can also be stopped by closing the two-way valve one 15 and the two-way valve two 16.
In this embodiment, as shown in fig. 5, in the second-stage cooling and heating mode, the pipeline between the first three-way valve 11 and the three-way end a, the pipeline between the second three-way valve 12 and the three-way end B, the connecting pipeline between the sixth three-way valve 20 and the fifth three-way valve 19, the connecting pipeline between the fourth three-way valve 14 and the lower branch, and the connecting pipeline between the third three-way valve 13 and the branch are closed, the paths a-B and C-D of the four-way reversing valve 8 are opened, and the paths a-D and B-C of the four-way reversing valve 8 are closed.
Specifically, the implementation is the same as the hot water system, the indoor heat exchange system and the outdoor heat exchange system in the first-stage refrigeration and hot water mode, except that the compressors of the first compressor 1 and the second compressor 2 are arranged in series to form two-stage compression.
In the fourth embodiment, based on the first embodiment, as shown in fig. 6, in the defrosting mode, the pipeline between the first three-way valve 11 and the three-way end a is closed, the pipeline between the second three-way valve 12 and the three-way end B is closed, the pipeline between the third three-way valve 13 and the six three-way valve 20 is closed, the pipeline between the fourth three-way valve 14 and the fifth three-way valve 19 is closed, the paths a-B and C-D of the four-way reversing valve 8 are opened, and the paths a-D and B-C of the four-way reversing valve 8 are closed.
Specifically, the high-temperature and high-pressure refrigerant compressed by the compression system enters the fourth heat exchanger 7 through the six-way valve 20 to heat the fourth heat exchanger 7, so that deicing and defrosting are realized, the refrigerant is discharged from the five-way valve 19 after work is finished, enters the expansion valve 6 to be throttled and depressurized, and then passes through the four-way valve 14, and the working medium returns to the first heat exchanger 3, so that the system completes one cycle.
The working principle is as follows:
the working principle of the compression system is as follows: the compressor can adjust the position relation of the two compressors according to the control of the three-way valve, the left port of the first three-way valve 11 is closed under the condition of first-stage compression (the left part is equivalent to a short circuit and no working medium can flow through, and the connection relation between the first compressor 1 and the second compressor 2 is parallel connection), wherein the working medium enters the compression system for compression after passing through a backward passage of the four-way reversing valve 8, the working medium before entering the compression system is low-temperature low-pressure superheated steam, the working medium enters the compression system from a point a and then is divided into two ways, the left way enters the right of the first three-way valve 11 and enters the first compressor 1 from the upper part of the first three-way valve 11 for compression, the working medium is compressed into high-temperature high-pressure superheated working medium steam by the compressor, the working medium is discharged from an exhaust port of the compressor and enters the second three-way valve 12, the right way of the point a is compressed by the second compressor and then becomes high-temperature high-pressure superheated working medium steam, the exhaust port of the compressor and then enters the second three-way valve 12, the working medium of the two branches is mixed in the four-way reversing valve 8 for reversing, and enters the indoor heat exchange system and the heat exchange system for heat exchange.
The working principle of the hot water system is as follows: when the indoor heat exchange system works in ase:Sub>A refrigeration mode, ase:Sub>A first heat exchanger 3 of the hot water system is equivalent to ase:Sub>A condenser, ase:Sub>A working medium compressed by ase:Sub>A compression system is switched into an A-B passage and ase:Sub>A C-D passage through ase:Sub>A four-way reversing valve 8, the working medium enters the hot water system through ase:Sub>A B-A passage and ase:Sub>A three-way valve six 20, the working medium entering the first heat exchanger 3 from the lower part of ase:Sub>A three-way valve three 13 exchanges heat with ase:Sub>A water passage on the other water side through ase:Sub>A three-way valve, the water pumping direction of ase:Sub>A water exchange pump on the water passage part is A-B, the working medium and water exchange convection fully exchange the heat of the working medium and condense and release the heat, the heat of the working medium is transferred to the water passage on the other water side, the temperature of the water passage on the other water side is increased and then input into ase:Sub>A water tank 9 through ase:Sub>A reversing water pump 10 for storage, the water can be released when ase:Sub>A one-way valve is opened, the supercooled liquid working medium after heat exchange flows out from an outlet of the first heat exchanger 3 and enters ase:Sub>A four-way valve 14, enters ase:Sub>A five-way valve 19 from the upper part of the three-way valve 14, and the three-way valve enters ase:Sub>A five-way valve 19 from the right of the expansion valve 6 for throttling and pressure reduction, and then flows into the indoor heat exchange system.
When the indoor heat exchange system works in a heating mode: the refrigeration system is characterized in that ase:Sub>A left channel of ase:Sub>A three-way valve 13 is closed, ase:Sub>A first heat exchanger 3 of ase:Sub>A hot water system is closed by ase:Sub>A left channel of ase:Sub>A four-way valve 14 and is equivalent to ase:Sub>A condenser, ase:Sub>A working medium compressed by ase:Sub>A compression system is switched into an A-D channel and ase:Sub>A B-C channel through ase:Sub>A four-way reversing valve 8, the working medium passes through the A-D channel and the three-way valve 13 and enters the hot water system, the working medium entering the first heat exchanger 3 from the lower part of the three-way valve 13 exchanges heat with another water side waterway through ase:Sub>A heat exchange, the water side waterway part is pumped in ase:Sub>A B-A direction through ase:Sub>A reversing water pump 10, the working medium and water exchange heat sufficiently in ase:Sub>A convection way, after condensation and heat release of the working medium, the heat of the working medium is transferred to the other water side waterway, the temperature of the other water side waterway is increased and then stored in ase:Sub>A water tank 9, and ase:Sub>A supercooled liquid working medium after heat exchange flows out from an outlet of the first heat exchanger 3 and enters the four-way valve 14; and the mixture enters a branch through the lower part of the three-way valve IV 14, is mixed with a branch working medium which is subjected to heat exchange by the indoor heat exchange system on the right, enters an expansion valve 6, is throttled and depressurized, and then flows into the indoor heat exchange system.
The working principle of the indoor heat exchange system is as follows:
indoor heating: the superheated high-temperature high-pressure steam entering from the branch of the left side above the three-way valve III 13 enters an indoor heat exchange system, the steam is divided into two paths from the upper part of the two-way valve I15, one path enters the second heat exchanger 4 through the two-way valve I15 to be condensed and released with air in the room I so as to achieve the purpose of heat supply, the other path enters the third heat exchanger 5 through the two-way valve III 17 to be condensed and released with air in the room II so as to achieve the purpose of heat supply, meanwhile, the heat supply to the room II can be stopped by closing the two-way valve III 17 and the two-way valve IV 18, the heat supply to the room I can be stopped by closing the two-way valve I15 and the two-way valve II 16, the three-way valve III 13 and the three-way valve IV 14 can be closed, the function of hot water making can be closed, working media after heat exchange flow into the branches, are mixed into supercooled liquid above the three-way valve IV 14, and flow into the expansion valve 6 to be throttled and depressurized, and finally flow into the outdoor heat exchange system to work;
indoor refrigeration: the working medium which is throttled, depressurized, at low temperature and low pressure flows into the indoor heat exchange system and is divided into two paths by a branch above the two-way valve two 16, one path of the working medium enters the second heat exchanger 4 through the two-way valve two 16 to be evaporated and absorb heat with the air in the room one so as to achieve the purpose of refrigeration, the other path of the working medium enters the third heat exchanger 5 through the two-way valve four 18 to be evaporated and absorb heat with the air in the room two so as to achieve the purpose of refrigeration, meanwhile, the refrigeration of the room two can be stopped by closing the two-way valve three 17 and the two-way valve four 18, the refrigeration of the room one can also be stopped by closing the two-way valve one 15 and the two-way valve two 16, the working medium which is evaporated and absorbs heat with the air in the room is mixed above the two-way valve one 15, and flows into the compression system through the four-way reversing valve 8 to be compressed.
The working principle of the outdoor heat exchange system is as follows:
in the heating mode: the upper sides of the three-way valve six 20 and the three-way valve five 19 are closed, the fourth heat exchanger 7 acts as an evaporator, the working medium throttled and decompressed by the expansion valve 6 enters the fourth heat exchanger 7 through the three-way valve five 19 to exchange heat with outdoor air, and then the working medium becomes low-temperature low-pressure superheated steam and enters a compression system through the four-way valve to be compressed;
in a refrigeration mode: if the system is producing hot water, the left sides of the three-way valve six 20 and the three-way valve five 19 are closed, the heat exchanger is equivalently idle, if no hot water is produced, the upper sides of the three-way valve six 20 and the three-way valve five 19 are closed, the channels of the three-way valve three 13 and the three-way valve four 14 are all closed, and the fourth heat exchanger 7 acts as a condenser.
In the defrosting mode: the upper sides of the three-way valve six 20 and the three-way valve five 19 are closed, the high-temperature and high-pressure refrigerant compressed by the compression system enters the fourth heat exchanger 7 through the three-way valve six 20 to heat the fourth heat exchanger 7, so that deicing and defrosting are realized, and then the refrigerant enters the three-way valve five 19 and enters the expansion valve 6 to be throttled and depressurized.
Claims (8)
1. The utility model provides a heat pump air conditioner water heater suitable for cold areas, includes compression system, hot-water heating system, indoor heat transfer system and outdoor heat transfer system, its characterized in that: branch pipelines are arranged among the compression system, the hot water system, the indoor heat exchange system and the outdoor heat exchange system and are connected with one another, and an expansion valve (6) and a four-way reversing valve (8) are arranged on the branch pipelines;
the compression system comprises a first compressor (1), a second compressor (2), a first three-way valve (11), a second three-way valve (12) and a third three-way valve (13), wherein an a three-way end and a b three-way end are arranged in the compression system, a lower end pipeline of the a three-way end is connected with a C channel of a four-way reversing valve (8), a right end pipeline of the a three-way end is connected with an inlet of the second compressor (2), a left end pipeline of the a three-way end is connected with a right end port of the first three-way valve (11), a left end pipeline of the first three-way valve (11) is connected with an upper end port of the b three-way end, an upper end pipeline of the first three-way valve (11) is connected with a lower inlet of the first compressor (1), an upper end pipeline of the first compressor (1) is connected with a left end port of the second three-way valve (12), an upper end pipeline of the second three-way valve (12) is connected with an A port of the four-way reversing valve (8), a lower end pipeline of the second three-way valve (12) is connected with a right end port of the b three-way end, and a lower end pipeline of the b three-way end is connected with an upper outlet of the second compressor (2);
the hot water system comprises a first heat exchanger (3), a water using water tank (9), a reversing water pump (10), a three-way valve (13), a four-way valve (14) and a hot water valve (21), wherein the upper port of the three-way valve (13) is connected with an upper branch pipeline, the left side of the three-way valve is connected with a D port of a four-way reversing valve (8), the right side of the three-way valve is connected with an indoor heat exchange system pipeline, the lower port of the three-way valve (13) is connected with a working medium inlet of the first heat exchanger (3), a working medium outlet pipeline of the first heat exchanger (3) is connected with the upper port of the four-way valve (14), the lower port of the four-way valve (14) is connected with a lower branch pipeline, the left side of the three-way valve is connected with a right port of an expansion valve (6), the right side of the three-way heat exchange system is connected with the indoor heat exchange system, one side of the first heat exchanger (3) is a water side water channel, the first heat exchanger is connected with an internal heat exchange component in parallel, a reversing water pump (10) is arranged at a water inlet of the water side, and is connected with the water using water tank (9) pipeline, and is connected with the water using water tank (13) at a left port;
the indoor heat exchange system comprises a second heat exchanger (4), a third heat exchanger (5), a first two-way valve (15), a second two-way valve (16), a third two-way valve (17) and a fourth two-way valve (18), wherein an upper port of the first two-way valve (15) is connected with an upper branch pipeline, the left side of the first two-way valve is connected with a right port of a third three-way valve (13) in the hot water system, the right side of the first two-way valve is connected with an upper port of the third two-way valve (17), a lower port of the first two-way valve (15) is connected with an upper inlet of the second heat exchanger (4), a lower outlet pipeline of the second heat exchanger (4) is connected with an upper port of the second two-way valve (16), a lower port of the second two-way valve (16) is connected with a lower branch pipeline, the left side of the fourth three-way valve (14) is connected with a lower port of the right side of the fourth two-way valve (18), an upper port pipeline of the fourth two-way valve (18) is connected with a lower outlet of the third heat exchanger (5), and an upper port of the third heat exchanger (5) is connected with a lower port of the third heat exchanger (17);
outdoor heat transfer system includes fourth heat exchanger (7), six (20) of three-way valve and five (19) of three-way valve, the B mouth of four-way reversing valve (8) is connected to six (20) left port pipe connections of three-way valve, and the left port of three (13) in the six (20) last port pipe connections hot water system of three-way valve, the left export of fourth heat exchanger (7) is connected to six (20) right port pipe connections of three-way valve, and the left port of the right import pipe connections three-way valve five (19) of fourth heat exchanger (7), the left port pipe connections of three-way valve four (14) in port and the hot water system is gone up to three-way valve five (19), and the right port and the expansion valve (6) left port pipe connections of three-way valve five (19).
2. The heat pump air-conditioning water heater suitable for the cold regions is characterized in that the water inlet of the water tank (9) is connected with one port of the water side water channel inside the first heat exchanger (3) through the reversing water pump (10), the water tank (9) is provided with two outlets, one outlet is connected with the other port of the water side water channel inside the first heat exchanger (3) through a pipeline, the other outlet is connected with a pipeline, a hot water valve (21) is arranged on the pipeline, and the water tank (9) is connected with an external tap water pipeline.
3. The heat pump air-conditioning water heater suitable for the cold regions as claimed in claim 1, wherein the total system of the compression system, the hot water system, the indoor heat exchange system and the outdoor heat exchange system has a primary heating and water heating mode, a secondary heating and water heating mode, a primary cooling and water heating mode, a secondary cooling and water heating mode and an outdoor energy-saving defrosting mode.
4. The heat pump air-conditioning water heater suitable for the cold areas as claimed in claim 3, wherein in the primary heating and water heating mode, the connecting pipeline of the first three-way valve (11) and the second compressor (2), the connecting pipeline of the third three-way valve (13) and the sixth three-way valve (20), the connecting pipeline of the fourth three-way valve (14) and the fifth three-way valve (19) are closed, the B-C and A-D paths of the four-way reversing valve (8) are opened, and the A-B and D-C paths of the four-way reversing valve (8) are closed.
5. The heat pump air-conditioning water heater suitable for the cold areas as claimed in claim 3, wherein in the two-stage heating and water heating mode, the connection pipeline between the three-way valve three (13) and the three-way valve six (20) and the connection pipeline between the three-way valve four (14) and the three-way valve five (19) are closed, the paths B-C and A-D of the four-way reversing valve (8) are opened, and the paths A-B and D-C are closed, so that the first compressor (1) and the second compressor (2) are connected in series in the compression system as two-stage compression.
6. The heat pump air-conditioning water heater suitable for the cold areas as claimed in claim 3, wherein in the primary cooling and heating water mode, the connecting pipeline of the first three-way valve (11) and the second compressor (2), the connecting pipeline of the third three-way valve (13) and the sixth three-way valve (20), the connecting pipeline of the fourth three-way valve (14) and the fifth three-way valve (19) are closed, the A-B and C-D paths of the four-way reversing valve (8) are opened, and the A-D and B-C paths of the four-way reversing valve (8) are closed.
7. The heat pump air-conditioning water heater suitable for the cold areas as claimed in claim 3, wherein in the two-stage cooling and heating water mode, the pipeline between the first three-way valve (11) and the third three-way end a, the pipeline between the second three-way valve (12) and the third three-way end B, the connecting pipeline between the sixth three-way valve (20) and the fifth three-way valve (19), the connecting pipeline between the fourth three-way valve (14) and the lower branch, and the connecting pipeline between the third three-way valve (13) and the branch are closed, the A-B and C-D paths of the four-way reversing valve (8) are opened, and the A-D and B-C paths of the four-way reversing valve (8) are closed.
8. The heat pump air-conditioning water heater suitable for the cold areas as claimed in claim 3, wherein in the defrosting mode, the pipeline between the first three-way valve (11) and the third-way end a is closed, the pipeline between the second three-way valve (12) and the third-way end B is closed, the pipeline between the third three-way valve (13) and the sixth three-way valve (20) is closed, the pipeline between the fourth three-way valve (14) and the fifth three-way valve (19) is closed, the A-B and C-D paths of the four-way reversing valve (8) are opened, and the A-D and B-C paths of the four-way reversing valve (8) are closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223204266.7U CN218672639U (en) | 2022-11-30 | 2022-11-30 | Heat pump air conditioner water heater suitable for cold area |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223204266.7U CN218672639U (en) | 2022-11-30 | 2022-11-30 | Heat pump air conditioner water heater suitable for cold area |
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| Publication Number | Publication Date |
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| CN218672639U true CN218672639U (en) | 2023-03-21 |
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| CN202223204266.7U Active CN218672639U (en) | 2022-11-30 | 2022-11-30 | Heat pump air conditioner water heater suitable for cold area |
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| Country | Link |
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| CN (1) | CN218672639U (en) |
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