CN113154514A - Machine-pump combined-drive enthalpy-increasing type air source heat pump user three-purpose machine for cooling, heating and water heating - Google Patents
Machine-pump combined-drive enthalpy-increasing type air source heat pump user three-purpose machine for cooling, heating and water heating Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/02—Domestic hot-water supply systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/06—Superheaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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Abstract
The invention relates to a machine-pump combined-drive enthalpy-increasing type air source heat pump user three-purpose machine for cooling, heating and hot water, which comprises a refrigerant system, a heating/cold water system and a domestic hot water system, wherein five functions of heating, cooling, domestic hot water supply, heating and domestic hot water supply, cooling and domestic hot water supply can be realized by controlling the starting and stopping of an air supply type compressor, a fluorine pump, a four-way valve, an electronic expansion valve and a water pump in the water system in the refrigerant system and the opening and closing of an electromagnetic valve of the refrigerant system and an electric valve of the water system, so that the three-purpose machine for cooling, heating and domestic hot water supply for single family in winter, cooling in summer and domestic hot water supply all the year. The invention takes the renewable energy source air source as the cold and heat source of the system, and the energy source structure is reasonable; the compressor and the pump are used as driving forces, so that the system is energy-saving and efficient; by means of the technology of air supply and enthalpy increase, the system is stable and reliable in energy supply; the system has multiple purposes, high system utilization rate and low operation cost, has good engineering application value and social and economic benefits, and contributes to popularization and application of renewable energy sources in the building energy-saving field of China.
Description
Technical Field
The invention belongs to the technical field of air source heat pumps, and particularly relates to a machine-pump combined-drive enthalpy-increasing type three-purpose machine for cooling, heating and water heating for a user of an air source heat pump.
Background
Air energy is a renewable energy source with huge energy conservation, cleanness and no pollution, and heat pump technology is considered as a mode for most effectively utilizing renewable low-temperature heat, wherein the air source heat pump is widely concerned due to the advantages of high efficiency, energy conservation, environmental protection, safety and the like. Heating in winter, cooling in summer and domestic hot water supply all the year round have gradually become the most basic requirements in most single family families in China, and the existing air source heat pump has single technical function and cannot meet the energy requirements of diversification of heating, cooling and domestic hot water in the single family. Therefore, in recent years, researchers have proposed many solutions.
The patent number is "CN 201920044615.2", the name is "an intelligent air source heat pump heating and hot water supply system", the publication number is "CN 209840251U", this technology makes full use of heating and hot water heat production through installing the heat dissipation metal mesh and coating the heat dissipation coating.
The patent number is "CN 201821359190.6", the name is "air source heat pump heating system that refrigerates", publication number is "CN 208846778U", this technique guarantees the refrigerated reliability in summer through setting up the preparation cooling device, adopts the water tank to carry out the heat transfer simultaneously, can prevent the production of heat exchanger defrosting phenomenon when winter, has guaranteed the effect of heating.
But the air source heat pump system in the above-mentioned patent is difficult to satisfy the diversified energy demands of single family with cold, warm and life hot water simultaneously down, and under the most unfavorable operating mode, system energy supply stability is difficult to guarantee. In addition, when the outdoor temperature is high, the external high-temperature air energy heat source can heat tap water without power, and heating can be realized without a heat pump system, so that the power consumption of the compressor driving system is high in the operation mode.
Disclosure of Invention
Aiming at the problems, the invention aims to provide domestic hot water for single family heating in winter, cooling in summer and supplying life all year round by using renewable energy air energy as a cold and heat source of a system and relying on a heat pump technology of combined driving of a compressor and a pump and an air supplementing and enthalpy increasing technology, and is energy-saving, efficient, stable and reliable.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a machine-pump combined-drive enthalpy-increasing type three-purpose machine for air source heat pump users to cool, heat and hot water comprises a refrigerant system, a heating/cooling water system and a domestic hot water system;
the refrigerant system comprises a compressor-driven enthalpy-increasing type air source heat pump system and a pump-driven air source system;
the compressor-driven enthalpy-increasing type air source heat pump system mainly comprises an air supply type compressor 1, an oil separator 2, a domestic hot water heat exchanger 3, a four-way valve 4, a heating/cooling heat exchanger 5, a drying filter 6, a liquid storage device 7, a fluorine pump 8, a gas-liquid separation/heat regenerator 9, an intercooler 11, a fin type heat exchanger 13, a plurality of electronic expansion valves, a plurality of electromagnetic valves and a plurality of one-way valves, wherein an exhaust pipe of the air supply type compressor 1 is sequentially connected with the oil separator 2, the one-way valve 18, the domestic hot water heat exchanger 3 and the four-way valve 4, two paths are divided through the four-way valve 4, one path is sequentially connected with the heating/cooling heat exchanger 5, the three-way valve 20, the drying filter 6, the liquid storage device 7, the fluorine pump 8 and the gas-liquid separation/heat regenerator 9, two paths are divided through the gas-liquid separation/heat regenerator 9, and the other path is sequentially connected with the one electronic expansion valve 10, The gas supplementing port of the intercooler 11 and the gas supplementing type compressor 1 is connected with the other path of the gas supplementing port of the intercooler 11, the electronic expansion valve II 12, the check valve III 23, the finned heat exchanger 13, the four-way valve 4, the electromagnetic valve IV 17, the gas-liquid separation/heat regenerator 9 and the gas supplementing type compressor 1 in sequence; the other path divided by the four-way valve 4 is sequentially connected with a finned heat exchanger 13, a solenoid valve III 16, a one-way valve V22, a drying filter 6, a liquid storage device 7, a fluorine pump 8 and an air-liquid separation/heat regenerator 9;
the pump driving air source system mainly comprises a fluorine pump 8, a fin type heat exchanger 13, a four-way valve 4, a domestic hot water heat exchanger 3, a heating/cooling heat exchanger 5, a drying filter 6, a liquid storage device 7, a first electromagnetic valve 14 and a plurality of one-way valves, wherein the outlet of the fluorine pump 8 is sequentially connected with the first electromagnetic valve 14, a sixth one-way valve 23, the fin type heat exchanger 13, the four-way valve 4, a second one-way valve 19, the domestic hot water heat exchanger 3, the four-way valve 4, the heating/cooling heat exchanger 5, a third one-way valve 20, the drying filter 6, the liquid storage device 7 and the inlet of the fluorine pump 8.
The operation modes of the refrigerant system specifically include the following three modes:
in the first mode, the air supply type compressor 1 and the fluorine pump 8 are driven jointly, the domestic hot water heat exchanger 3 and the heating/cooling heat exchanger 5 are used as condensers, the finned heat exchanger 13 is used as an evaporator, the air supply type compressor 1, the fluorine pump 8, the electronic expansion valve I10 and the electronic expansion valve II 12 are started, and the electromagnetic valve IV 17 is opened;
in the second mode, the air supply type compressor 1 and the fluorine pump 8 are driven jointly, the domestic hot water heat exchanger 3 and the fin type heat exchanger 13 are used as condensers, the heating/cooling heat exchanger is used as an evaporator, the air supply type compressor 1, the fluorine pump 8, the four-way valve 4, the electronic expansion valve I10 and the electronic expansion valve II 12 are started, and the electromagnetic valve II 15, the electromagnetic valve III 16 and the electromagnetic valve IV 17 are opened;
and in the third mode, the fluorine pump 8 is driven, the domestic hot water heat exchanger 3 is used as a condenser, the fin type heat exchanger 13 is used as an evaporator, the fluorine pump 8 and the four-way valve 4 are started, and the first electromagnetic valve 14 is opened.
The air-supply type compressor 1 is used for compressing low-temperature low-pressure refrigerant gas into high-temperature high-pressure gas, in addition, the heating/cooling efficiency, the stability and the reliability of the system are improved through an air-supply enthalpy-increasing technology, and the types of the air-supply type compressor 1 comprise a rotor type, a vortex type and the like;
the finned heat exchanger 13 is used for absorbing heat in outdoor air or releasing heat to the outdoor environment in a convection heat exchange mode;
the domestic hot water heat exchanger 3 is mainly used for supplying domestic hot water, and the type of the domestic hot water heat exchanger 3 comprises a plate exchange type, a sleeve type and a shell and tube type;
the heating/cooling heat exchanger 5 is mainly used for preparing heating hot water and cooling chilled water, and the types of the heating/cooling heat exchanger 5 include a plate exchanger type, a sleeve type and a shell and tube type;
the electronic expansion valve can be replaced by a thermal expansion valve.
The domestic hot water system mainly comprises a water pump, a domestic hot water heat exchanger 3 and an electric valve; the water pump I24, the domestic hot water heat exchanger 3 and the electric valve I26 are connected through water pipelines;
the heating/cooling water system mainly comprises a water pump, a heating/cooling heat exchanger 5 and an electric valve; the second water pump 25, the heating/cooling heat exchanger 5 and the second electric valve 27 are connected through water pipelines.
The operation modes of the domestic hot water system and the heating/cold water system specifically comprise the following three modes:
in the first mode, when the system supplies domestic hot water, the first water pump 24 and the first electric valve 26 are opened;
in the second mode, when the system is heated or cooled, the second water pump 25 and the second electric valve 27 are opened;
and in the third mode, when the system is heated/cooled and the domestic hot water is supplied, the first water pump 24, the second water pump 25, the first electric valve 26 and the second electric valve 27 are opened.
By controlling the start and stop of the air-supply compressor 1, the fluorine pump 8, the four-way valve 4, the electronic expansion valve and the water pump in the water system and the opening and closing of the electromagnetic valve of the refrigerant system and the electric valve of the water system, the system can finally realize the following six operation modes:
in the first mode, in the machine-pump combined drive enthalpy-increasing air source heat pump user domestic hot water supply mode, the air-supplementing type compressor 1, the fluorine pump 8, the electronic expansion valve I10, the electronic expansion valve II 12 and the water pump I24 are started, and the electromagnetic valve IV 17 and the electric valve I26 are started;
in the second mode, in the user heating mode of the machine-pump combined drive enthalpy-increasing air source heat pump, the air-supplementing type compressor 1, the fluorine pump 8, the four-way valve 4, the first electronic expansion valve 10, the second electronic expansion valve 12 and the second water pump 25 are started, and the fourth electromagnetic valve 17 and the second electric valve 27 are started;
in the third mode, in the user heating and domestic hot water mode of the machine-pump combined drive enthalpy-increasing air source heat pump, the air-supplementing type compressor 1, the fluorine pump 8, the electronic expansion valve I10, the electronic expansion valve II 12, the water pump I24 and the water pump II 25 are started, and the electromagnetic valve IV 17, the electric valve I26 and the electric valve II 27 are opened;
in the fourth mode, in the user cooling mode of the machine-pump combined drive enthalpy-increasing air source heat pump, the air-supplementing compressor 1, the fluorine pump 8, the four-way valve 4, the first electronic expansion valve 10, the second electronic expansion valve 12 and the second water pump 25 are started, and the second electromagnetic valve 15, the third electromagnetic valve 16, the fourth electromagnetic valve 17 and the second electromagnetic valve 27 are started;
in the fifth mode, in the machine-pump combined drive enthalpy-increasing air source heat pump user cold supply and domestic hot water supply mode, the air supply type compressor 1, the fluorine pump 8, the four-way valve 4, the first electronic expansion valve 10, the second electronic expansion valve 12, the first water pump 24 and the second water pump 25 are started, and the second electromagnetic valve 15, the third electromagnetic valve 16, the fourth electromagnetic valve 17, the first electric valve 26 and the second electric valve 27 are opened;
and a sixth mode is that the pump drives the air source system to supply domestic hot water, the fluorine pump 8 and the water pump 24 are started, and the electromagnetic valve 14 and the electromagnetic valve 26 are opened.
The invention has the beneficial effects that:
the invention takes a clean pollution-free air source as a cold and heat source of the system, and is green and environment-friendly;
the air-supplying and enthalpy-increasing technology is applied to the air source heat pump system, so that the running stability of the system under the most unfavorable working condition is improved, and the energy supply capacity of the system under the most unfavorable working condition is guaranteed;
according to the invention, the ultra-low energy consumption heat pump driving air source system is applied to the air source heat pump system, so that the condensing pressure of the heat pump system is reduced, the system energy efficiency and the operation stability are improved, the efficiency and the energy conservation are realized, and the operation cost is low;
when the outdoor temperature is higher, the air source system is driven to heat only by the ultra-low energy consumption pump, so that the energy-saving effect is obvious;
the invention can supply heat in winter, cool in summer and hot water all the year round for single family, has multiple functions and improves the utilization rate of equipment.
Drawings
FIG. 1 is a schematic diagram of a user cold-hot-water three-purpose machine with a pump-coupled enthalpy-increasing air source heat pump according to the present invention;
FIG. 2 is a schematic diagram of a user living hot water supply mode of the pump combination enthalpy-increasing air source heat pump of the invention;
FIG. 3 is a schematic diagram of a user heating mode of the pump-coupled enthalpy-increasing air source heat pump according to the present invention;
FIG. 4 is a schematic diagram of a user heating and domestic hot water mode of the combined-drive enthalpy-increasing air source heat pump of the invention;
FIG. 5 is a schematic diagram of a user cooling mode of the pump-coupled enthalpy-increasing air source heat pump according to the present invention;
FIG. 6 is a schematic diagram of a user cold supply and domestic hot water supply mode of the pump combination enthalpy-increasing air source heat pump of the present invention;
FIG. 7 is a schematic diagram of the domestic hot water supply mode of the pump-driven air source system of the present invention;
in the figure: 1-air supply type compressor, 2-oil separator, 3-domestic hot water heat exchanger, 4-four-way valve, 5-heating/cooling heat exchanger, 6-drying filter, 7-reservoir, 8-fluorine pump, 9-gas-liquid separation/heat regenerator, 10-electronic expansion valve I, 11-intercooler, 12-electronic expansion valve II, 13-finned heat exchanger, 14-solenoid valve I, 15-solenoid valve II, 16-solenoid valve III, 17-solenoid valve IV, 18-one-way valve I, 19-one-way valve II, 20-one-way valve III, 21-one-way valve IV, 22-one-way valve V, 23-one-way valve VI, 24-water pump I, 25-water pump II, 26-one-electric valve I, and 27-electric valve II.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, in this embodiment, the machine-pump-coupled enthalpy-increasing type air source heat pump user three-purpose machine for cooling, heating and heating water includes a refrigerant system, a heating/cooling water system, and a domestic hot water system.
The refrigerant system is mainly composed of a gas supplementing type compressor 1, an oil separator 2, a domestic hot water heat exchanger 3, a four-way valve 4, a heating/cooling heat exchanger 5, a drying filter 6, a liquid storage device 7, a fluorine pump 8, a gas-liquid separation/heat regenerator 9, an electronic expansion valve 10, an intercooler 11, an electronic expansion valve 12, a fin type heat exchanger 13, a first electromagnetic valve 14, a second electromagnetic valve 15, a third electromagnetic valve 16, a fourth electromagnetic valve 17, a first one-way valve 18, a second one-way valve 19, a third one-way valve 20, a fourth one-way valve 21, a fifth one-way valve 22 and a sixth one-way valve 23 which are connected through;
the domestic hot water system is formed by connecting a first water pump 24, a domestic hot water heat exchanger 3 and a first electric valve 26 through water pipelines;
the heating/cooling water system is formed by connecting a water pump II 25, a heating/cooling heat exchanger 5 and an electric valve II 27 through water pipelines;
in this embodiment, the functions of heating/cooling and domestic hot water can be realized by starting and stopping the air supply type compressor 1, the fluorine pump 8, the four-way valve 4, the first electronic expansion valve 10, the second electronic expansion valve 12, the first water pump 24 and the second water pump 25, and opening and closing the first electromagnetic valve 14, the second electromagnetic valve 15, the third electromagnetic valve 16, the fourth electromagnetic valve 17, the first electric valve 26 and the second electric valve 27, so that the multifunctional air conditioner achieves multiple purposes.
(1) When a user of the machine-pump combined-drive enthalpy-increasing air source heat pump operates in a domestic hot water supply mode, the air-supply compressor 1, the fluorine pump 8, the first electronic expansion valve 10, the second electronic expansion valve 12 and the first water pump 24 are started, and the fourth electromagnetic valve 17 and the first electric valve 26 are opened. At this time, as shown in fig. 2, the operation principle is as follows: the low-temperature low-pressure gaseous refrigerant is compressed into high-temperature high-pressure gaseous refrigerant by the air supply type compressor 1, enters the domestic hot water heat exchanger 3 through the oil separator 2 and the one-way valve 18 to release heat into a domestic hot water system, and then the high-temperature high-pressure gaseous refrigerant is condensed into medium-temperature high-pressure liquid refrigerant, and then sequentially enters the fluorine pump 8 through the four-way valve 4, the heating/cooling heat exchanger 5, the three-way valve 20, the drying filter 6 and the liquid reservoir 7 to be pressurized, so that the mass flow is increased, and then the refrigerant is divided into two paths through the gas-liquid separator/heat: one path of the refrigerant is throttled by an electronic expansion valve 10 to be a medium-low temperature medium-pressure gas-liquid two-phase refrigerant, wherein the liquid refrigerant absorbs heat by an intercooler 11 and is evaporated into a gas state, and the pure gas refrigerant enters an air supplement port of an air supplement type compressor 1; the other path of refrigerant is cooled by an intercooler 11, enters an electronic expansion valve II 12, is throttled into low-temperature and low-pressure gas-liquid two-phase refrigerant, enters a fin type heat exchanger 13 through a one-way valve VI 23, absorbs heat energy in outdoor air, is evaporated into gaseous refrigerant, and finally enters an air suction port of the air-supplementing type compressor 1 through a four-way valve 4, a solenoid valve IV 17 and a gas-liquid separation/heat regenerator 9. The domestic hot water enters the domestic hot water heat exchanger 3 to absorb heat under the driving of the first water pump 24, and the domestic hot water is circulated in the domestic hot water heat exchanger, so that the domestic hot water is continuously heated.
(2) When the machine pump combination drive enthalpy-increasing type air source heat pump operates in a user heating mode, the air-supplementing type compressor 1, the fluorine pump 8, the four-way valve 4, the first electronic expansion valve 10, the second electronic expansion valve 12 and the second water pump 25 are started, and the fourth electromagnetic valve 17 and the second electromagnetic valve 27 are started. At this time, as shown in fig. 3, the operation principle is as follows: the low-temperature low-pressure gaseous refrigerant is compressed into high-temperature high-pressure gaseous refrigerant by the air supply type compressor 1, enters the heating/cooling heat exchanger 5 through the oil separator 2, the one-way valve 18, the domestic hot water heat exchanger 3 and the four-way valve 4 to release heat into a heating water system, and then the high-temperature high-pressure gaseous refrigerant is condensed into medium-temperature high-pressure liquid refrigerant, and then sequentially enters the fluorine pump 8 through the three one-way valve 20, the drying filter 6 and the liquid reservoir 7 to be pressurized, so that the mass flow is increased, and then the refrigerant is divided into two paths through the gas-liquid separator/heat regenerator 9: one path of the refrigerant is throttled by an electronic expansion valve 10 to be a medium-low temperature medium-pressure gas-liquid two-phase refrigerant, wherein the liquid refrigerant absorbs heat by an intercooler 11 and is evaporated into a gas state, and the pure gas refrigerant enters an air supplement port of an air supplement type compressor 1; the other path of refrigerant is cooled by an intercooler 11, enters an electronic expansion valve II 12, is throttled into low-temperature and low-pressure gas-liquid two-phase refrigerant, enters a fin type heat exchanger 13 through a one-way valve VI 23, absorbs heat energy in air, is evaporated into gaseous refrigerant, and finally enters an air suction port of the air-supplementing type compressor 1 through a four-way valve 4, a solenoid valve IV 17 and a gas-liquid separation/heat regenerator 9. The heating hot water enters the heating/cooling heat exchanger 5 to absorb heat under the driving of the water pump II 25, and the heating hot water is continuously heated through circulation.
(3) When the machine-pump combined drive enthalpy-increasing type air source heat pump operates in a user heating and domestic hot water mode, the air-supplementing type compressor 1, the fluorine pump 8, the first electronic expansion valve 10, the second electronic expansion valve 12, the first water pump 24 and the second water pump 25 are started, and the fourth electromagnetic valve 17, the first electric valve 26 and the second electric valve 27 are started. At this time, as shown in fig. 4, the operation principle is as follows: the low-temperature low-pressure gaseous refrigerant is compressed into high-temperature high-pressure gaseous refrigerant by the air supply type compressor 1, enters the domestic hot water heat exchanger 3 and the heating/cooling heat exchanger 5 through the oil separator 2 and the one-way valve I18 to respectively release heat into domestic hot water and a heating/cooling hot water system, the high-temperature high-pressure gaseous refrigerant is further condensed into medium-temperature high-pressure liquid refrigerant, then sequentially enters the fluorine pump 8 through the three one-way valve 20, the drying filter 6 and the liquid reservoir 7 to be pressurized, then the mass flow is increased, and then the refrigerant is divided into two paths through the gas-liquid separator/heat regenerator 9: one path of the refrigerant is throttled by an electronic expansion valve 10 to be a medium-low temperature medium-pressure gas-liquid two-phase refrigerant, wherein the liquid refrigerant absorbs heat by an intercooler 11 and is evaporated into a gas state, and the pure gas refrigerant enters an air supplement port of an air supplement type compressor 1; the other path of refrigerant is cooled by an intercooler 11, enters an electronic expansion valve II 12, is throttled into low-temperature and low-pressure gas-liquid two-phase refrigerant, enters a fin type heat exchanger 13 through a one-way valve VI 23, absorbs heat energy in air, is evaporated into gaseous refrigerant, and finally enters an air suction port of the air-supplementing type compressor 1 through a four-way valve 4, a solenoid valve IV 17 and a gas-liquid separation/heat regenerator 9. The domestic hot water enters the domestic hot water heat exchanger 3 to absorb heat under the driving of the first water pump 24, and the domestic hot water is circulated in the domestic hot water heat exchanger, so that the domestic hot water is continuously heated; the heating hot water enters the heating/cooling heat exchanger 5 to absorb heat under the driving of the water pump II 25, and the heating hot water is circulated in the heating/cooling heat exchanger, so that the heating hot water is continuously heated.
(4) When the machine-pump combined drive enthalpy-increasing type air source heat pump operates in a user cooling mode, the air-supplementing type compressor 1, the fluorine pump 8, the four-way valve 4, the first electronic expansion valve 10, the second electronic expansion valve 12 and the second water pump 25 are started, and the second electromagnetic valve 15, the third electromagnetic valve 16, the fourth electromagnetic valve 17 and the second electromagnetic valve 27 are started. At this time, as shown in fig. 5, the operation principle is as follows: the low-temperature low-pressure gaseous refrigerant is compressed into high-temperature high-pressure gaseous refrigerant by the air supply type compressor 1, enters the fin type heat exchanger through the oil separator 2, the one-way valve 18, the four-way valve 4 and the domestic hot water heat exchanger 3 to release heat into outside air, and then the high-temperature high-pressure gaseous refrigerant is condensed into medium-temperature high-pressure liquid refrigerant, and then sequentially enters the fluorine pump 8 through the electromagnetic valve III 16, the one-way valve V22, the drying filter 6 and the liquid reservoir 7 to be pressurized, so that the mass flow is increased, and then the refrigerant is divided into two paths through the gas-liquid separator/heat regenerator 9: one path of the refrigerant is throttled by an electronic expansion valve 10 to be a medium-low temperature medium-pressure gas-liquid two-phase refrigerant, wherein the liquid refrigerant absorbs heat by an intercooler 11 and is evaporated into a gas state, and the pure gas refrigerant enters an air supplement port of an air supplement type compressor 1; the other path of refrigerant is cooled by an intercooler 11, enters an electronic expansion valve II 12, is throttled into low-temperature and low-pressure gas-liquid two-phase refrigerant, then enters a heating/cooling heat exchanger 5 through an electromagnetic valve II 15 and a one-way valve IV 21 to absorb heat and evaporate into gaseous refrigerant, and finally enters an air suction port of the air-supplementing type compressor 1 through a four-way valve 4, an electromagnetic valve IV 17 and a gas-liquid separation/heat regenerator 9. The cold supply chilled water enters the heating/cooling heat exchanger 5 to release heat under the driving of the second water pump 25, and the cold supply chilled water is continuously cooled by circulation.
(5) When the machine-pump combined drive enthalpy-increasing type air source heat pump operates in a cold supply and living hot water mode, the air supply type compressor 1, the fluorine pump 8, the four-way valve 4, the first electronic expansion valve 10, the second electronic expansion valve 12, the first water pump 24 and the second water pump 25 are started, and the second electromagnetic valve 15, the third electromagnetic valve 16, the fourth electromagnetic valve 17, the first electric valve 26 and the second electric valve 27 are started. At this time, as shown in fig. 6, the operation principle is as follows: the low-temperature low-pressure gaseous refrigerant is compressed into high-temperature high-pressure gaseous refrigerant by the air supply type compressor 1, then sequentially enters the domestic hot water heat exchanger 3 and the fin type heat exchanger 13 through the oil separator 2 and the one-way valve I18, heat is respectively released into a domestic hot water system and outside air, the high-temperature high-pressure gaseous refrigerant is further condensed into medium-temperature high-pressure liquid refrigerant, and then sequentially enters the fluorine pump 8 through the electromagnetic valve III 16, the one-way valve V22, the drying filter 6 and the liquid reservoir 7 to be pressurized, so that the mass flow is increased, and then the refrigerant is divided into two paths through the gas-liquid separator/heat regenerator 9: one path of the refrigerant is throttled by an electronic expansion valve 10 to be a medium-low temperature medium-pressure gas-liquid two-phase refrigerant, wherein the liquid refrigerant absorbs heat by an intercooler 11 and is evaporated into a gas state, and the pure gas refrigerant enters an air supplement port of an air supplement type compressor 1; the other path of refrigerant is cooled by an intercooler 11, enters an electronic expansion valve II 12, is throttled into low-temperature and low-pressure gas-liquid two-phase refrigerant, then enters a heating/cooling heat exchanger 5 through an electromagnetic valve II 15 and a one-way valve IV 21 to absorb heat and evaporate into gaseous refrigerant, and finally enters an air suction port of the air-supplementing type compressor 1 through a four-way valve 4, an electromagnetic valve IV 17 and a gas-liquid separation/heat regenerator 9. The domestic hot water enters the domestic hot water heat exchanger 3 to absorb heat under the driving of the first water pump 24, and the domestic hot water is circulated in the domestic hot water heat exchanger, so that the domestic hot water is continuously heated; the cold supply chilled water enters the heating/cooling heat exchanger 5 to release heat under the driving of the second water pump 25, and the cold supply chilled water is continuously cooled by circulation.
(6) When the pump drives the air source system to operate in a domestic hot water supply mode, and the fluorine pump 8 and the water pump 24 operate in a starting mode, the solenoid valve 14 and the electric valve 26 are opened. At this time, as shown in fig. 7, the operation principle is as follows: the liquid refrigerant in the liquid storage device 7 is pressurized by the fluorine pump 8, enters the fin type heat exchanger 13 through the first electromagnetic valve 14 and the one-way valve 23 to absorb heat energy in air, is evaporated into a gaseous refrigerant, then enters the domestic hot water heat exchanger 3 through the four-way valve 4 and the second one-way valve 19 in sequence to release heat energy to a domestic hot water system, and then is condensed into the liquid refrigerant, and then enters the inlet of the fluorine pump 8 through the four-way valve 4, the heating/cooling heat exchanger 5, the three one-way valve 20, the drying filter 6 and the liquid storage device 7 in sequence. The domestic hot water enters the domestic hot water heat exchanger 3 to absorb heat under the driving of the first water pump 24, and the domestic hot water is circulated in the domestic hot water heat exchanger, so that the domestic hot water is continuously heated.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A machine-pump combined-drive enthalpy-increasing type air source heat pump user cold and hot water three-purpose machine is characterized in that the machine-pump combined-drive enthalpy-increasing type air source heat pump user cold and hot water three-purpose machine comprises a refrigerant system, a heating/cold water system and a domestic hot water system;
the refrigerant system comprises a compressor-driven enthalpy-increasing type air source heat pump system and a pump-driven air source system;
the compressor-driven enthalpy-increasing air source heat pump system mainly comprises an air supply type compressor (1), an oil separator (2), a domestic hot water heat exchanger (3), a four-way valve (4), a heating/cooling heat exchanger (5), a drying filter (6), a liquid storage device (7), a fluorine pump (8), a gas-liquid separation/heat regenerator (9), an intermediate cooler (11), a fin type heat exchanger (13), a plurality of electronic expansion valves, a plurality of electromagnetic valves and a plurality of one-way valves, wherein an exhaust pipe of the air supply type compressor (1) is sequentially connected with the oil separator (2), the one-way valve I (18), the domestic hot water heat exchanger (3) and the four-way valve (4), and is divided into two paths through the four-way valve (4), one path is sequentially connected with the heating/cooling heat exchanger (5), the one-way valve III (20), the drying filter (6), the liquid storage device (7), the fluorine pump (8) and the gas-liquid separation/heat regenerator (9), the gas-liquid separation/heat regenerator (9) is divided into two paths, one path is sequentially connected with a first electronic expansion valve (10), an intercooler (11) and a gas supplementing port of a gas supplementing type compressor (1), and the other path is sequentially connected with a sixth one-way valve (23), a fin type heat exchanger (13), a four-way valve (4), a fourth electromagnetic valve (17), the gas-liquid separation/heat regenerator (9) and a gas supplementing type compressor (1) air suction port; the other path divided by the four-way valve (4) is sequentially connected with a fin type heat exchanger (13), a solenoid valve III (16), a one-way valve V (22), a drying filter (6), a liquid storage device (7), a fluorine pump (8) and a gas-liquid separation/heat regenerator (9), and is divided into two paths by the gas-liquid separation/heat regenerator (9), wherein one path is sequentially connected with a first electronic expansion valve (10), an intermediate cooler (11) and a gas supplementing port of a gas supplementing type compressor (1), and the other path is sequentially connected with a second intermediate cooler (11), a second electronic expansion valve (12), a second solenoid valve (15), a fourth one-way valve (21), a heating/cooling heat exchanger (5), the four-way valve (4), a fourth solenoid valve (17), the gas-liquid separation/heat regenerator (9) and a gas supplementing type compressor (1) air suction port;
the pump driving air source system mainly comprises a fluorine pump (8), a fin type heat exchanger (13), a four-way valve (4), a domestic hot water heat exchanger (3), a heating/cooling heat exchanger (5), a drying filter (6), a liquid storage device (7), a first electromagnetic valve (14) and a plurality of one-way valves, wherein the outlet of the fluorine pump (8) is sequentially connected with a first electromagnetic valve (14), a sixth one-way valve (23), the fin type heat exchanger (13), the four-way valve (4), a second one-way valve (19), the domestic hot water heat exchanger (3), the four-way valve (4), the heating/cooling heat exchanger (5), a third one-way valve (20), the drying filter (6), the liquid storage device (7) and the inlet of the fluorine pump (8);
the domestic hot water system is mainly formed by connecting a first water pump (24), a domestic hot water heat exchanger (3) and a first electric valve (26) through a water pipeline;
and the heating/cooling water system is mainly formed by connecting a second water pump (25), a heating/cooling heat exchanger (5) and a second electric valve (27) through a water pipeline.
2. The machine-pump combined-drive enthalpy-increasing type air source heat pump user three-purpose machine for cooling, heating and water heating according to claim 1, characterized in that: the operation modes of the refrigerant system specifically include the following three modes:
in the first mode, the air supply type compressor (1) and the fluorine pump (8) are driven jointly, the domestic hot water heat exchanger (3) and the heating/cooling heat exchanger (5) are used as condensers, the fin type heat exchanger (13) is used as an evaporator, the air supply type compressor (1), the fluorine pump (8), the electronic expansion valve I (10) and the electronic expansion valve II (12) are started, and the electromagnetic valve IV (17) is opened;
in the second mode, the air supply type compressor (1) and the fluorine pump (8) are driven jointly, the domestic hot water heat exchanger (3) and the finned heat exchanger (13) are used as condensers, the heating/cooling heat exchanger (5) is used as an evaporator, the air supply type compressor (1), the fluorine pump (8), the four-way valve (4), the electronic expansion valve I (10) and the electronic expansion valve II (12) are started, and the electromagnetic valve II (15), the electromagnetic valve III (16) and the electromagnetic valve IV (17) are started;
and in the third mode, the fluorine pump (8) is driven, the domestic hot water heat exchanger (3) is used as a condenser, the fin type heat exchanger (13) is used as an evaporator, the fluorine pump (8) and the four-way valve (4) are started, and the electromagnetic valve I (14) is opened.
3. The machine-pump combined-drive enthalpy-increasing type air source heat pump user three-purpose machine for cooling, heating and water heating according to claim 1, characterized in that: the operation modes of the domestic hot water system and the heating/cold water system specifically comprise the following three modes:
in the first mode, when the system supplies domestic hot water, a first water pump (24) and a first electric valve (26) are opened;
in the second mode, when the system is heated or cooled, the second water pump (25) and the second electric valve (27) are started;
and in the third mode, when the system is heated/cooled and domestic hot water is supplied, the first water pump (24), the second water pump (25), the first electric valve (26) and the second electric valve (27) are opened.
4. The machine-pump co-driven enthalpy-increasing type air source heat pump user three-purpose machine for cooling, heating and water heating according to claim 1, 2 or 3, characterized in that: by controlling the starting and stopping of the air supply type compressor (1), the fluorine pump (8), the four-way valve (4), the electronic expansion valve and the water pump in the water system and the opening and closing of the electromagnetic valve of the refrigerant system and the electric valve of the water system, the system can finally realize the following six operation modes:
in the first mode, a machine-pump combined drive enthalpy-increasing type air source heat pump user living hot water supply mode is adopted, the air-supplementing type compressor (1), the fluorine pump (8), the electronic expansion valve I (10), the electronic expansion valve II (12) and the water pump I (24) are started, and the electromagnetic valve IV (17) and the electric valve I (26) are started;
in the second mode, in the heating mode of the machine-pump combined drive enthalpy-increasing air source heat pump user, the air-supplementing type compressor (1), the fluorine pump (8), the four-way valve (4), the electronic expansion valve I (10), the electronic expansion valve II (12) and the water pump II (25) are started, and the electromagnetic valve IV (17) and the electric valve II (27) are started;
in a third mode, in a user heating and domestic hot water mode of the machine-pump combined drive enthalpy-increasing air source heat pump, the air-supplementing type compressor (1), the fluorine pump (8), the electronic expansion valve I (10), the electronic expansion valve II (12), the water pump I (24) and the water pump II (25) are started, and the electromagnetic valve IV (17), the electric valve I (26) and the electric valve II (27) are started;
in the fourth mode, in the user cooling mode of the machine-pump combined drive enthalpy-increasing air source heat pump, the air-supplementing compressor (1), the fluorine pump (8), the four-way valve (4), the electronic expansion valve I (10), the electronic expansion valve II (12) and the water pump II (25) are started, and the electromagnetic valve II (15), the electromagnetic valve III (16), the electromagnetic valve IV (17) and the electric valve II (27) are started;
in a fifth mode, a machine-pump combined drive enthalpy-increasing type air source heat pump user cold supply and living hot water supply mode is adopted, the air supply type compressor (1), the fluorine pump (8), the four-way valve (4), the electronic expansion valve I (10), the electronic expansion valve II (12), the water pump I (24) and the water pump II (25) are started, and the electromagnetic valve II (15), the electromagnetic valve III (16), the electromagnetic valve IV (17), the electric valve I (26) and the electric valve II (27) are opened;
and a sixth mode is that the pump drives the air source system to supply domestic hot water, the fluorine pump (8) and the water pump I (24) are started, and the electromagnetic valve I (14) and the electromagnetic valve I (26) are opened.
5. The machine-pump co-driven enthalpy-increasing type air source heat pump user three-purpose machine for cooling, heating and water heating according to claim 1, 2 or 3, characterized in that: the air supply type compressor (1) comprises a rotor type compressor and a scroll type compressor.
6. The machine-pump co-driven enthalpy-increasing type air source heat pump user three-purpose machine for cooling, heating and water heating according to claim 1, 2 or 3, characterized in that: the finned heat exchanger (13) is used for absorbing heat in outdoor air or releasing heat to the outdoor environment in a convection heat exchange mode.
7. The machine-pump co-driven enthalpy-increasing type air source heat pump user three-purpose machine for cooling, heating and water heating according to claim 1, 2 or 3, characterized in that: the domestic hot water heat exchanger (3) is mainly used for supplying domestic hot water, and the type of the domestic hot water heat exchanger (3) comprises a plate-exchange type, a sleeve type and a shell-and-tube type.
8. The machine-pump co-driven enthalpy-increasing type air source heat pump user three-purpose machine for cooling, heating and water heating according to claim 1, 2 or 3, characterized in that: the heating/cooling heat exchanger (5) is mainly used for preparing heating hot water and cooling chilled water, and the types of the heating/cooling heat exchanger (5) comprise a plate-type heat exchanger, a sleeve-type heat exchanger and a shell-and-tube type heat exchanger.
9. The machine-pump co-driven enthalpy-increasing type air source heat pump user three-purpose machine for cooling, heating and water heating according to claim 1, 2 or 3, characterized in that: the electronic expansion valve is replaced by a thermal expansion valve.
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