CN206669935U - De- electrically independent operation combined type heat pump air conditioner system - Google Patents

Abstract

The utility model discloses a composite heat pump air-conditioning system with de-electricity independent operation. It solves the problem of poor operation stability of the existing air-conditioning heat pump system. Including the air source heat pump system based on photovoltaic photothermal utilization, the air source heat pump system based on photovoltaic photothermal utilization uses the mechanical energy output by the internal combustion engine as the input energy to provide cooling and heat to the building; the photovoltaic panel of the photovoltaic heat exchanger passes the line and the inverter The transformer controller and battery are connected in turn to form a power generation system to supply power to the system. The waste heat recovery system adopts two waste heat utilization methods. During winter operation, the waste heat is used as a high-temperature heat source to further heat the return water of the system; during summer operation, the waste heat is used as the driving heat source of the lithium bromide absorption refrigeration unit. The utility model is a novel green high-efficiency heat pump air-conditioning system with high energy utilization rate, low environmental pollution, low operation cost and stable operation.

Description

Composite heat pump air-conditioning system with de-energized independent operation

technical field

The utility model belongs to the technical field of air-conditioning and energy-saving equipment, and in particular relates to a composite heat pump air-conditioning system with de-electricity and independent operation.

Background technique

With the continuous improvement of people's living standards, people have higher and higher requirements for the comfort and cleanliness of living and working environments. Therefore, buildings in most areas of our country have multiple demands for heating in winter, air conditioning in summer and domestic hot water throughout the year. However, since most of my country's grid power is supplied by coal-fired power plants, increasing electrical equipment is basically equivalent to increasing environmental pollution. Therefore, it is necessary to promote the use of other energy sources from the perspective of improving the quality of the atmospheric environment and reducing greenhouse gas emissions. Building cold and heat source system. Internal combustion engine heat pump air-conditioning systems that use natural gas or other fuels as input energy have many advantages such as high efficiency, energy saving, safety, and environmental protection, and have attracted more and more attention.

The auxiliary equipment of the conventional gas heat pump system, such as fans, water pumps, control instruments, etc. still need to consume a small amount of power supply, which must be provided by the grid, so the system cannot operate independently from the grid, once the power supply is interrupted due to power supply shortage It will also be paralyzed with the electric air conditioner. Therefore, the independent operation of the gas heat pump system without electricity has become the focus of attention. From the currently published data, there are mainly the following ways to realize the independent operation of the gas heat pump system without electricity: 1. The gas engine drives the generator to realize the independent operation of the system [CN201310010199.1]. The rotation speed of the engine is adjusted by changing, so there is a contradiction between the system capacity adjustment and the constant speed of the generator in this method. At the same time, due to the relatively low power generation efficiency of the generator, the energy waste is relatively large; 2. Using solar photovoltaic power generation to realize the independent operation of the system [CN201310365773.5], because most of the solar radiation absorbed by the solar cell is not converted into electrical energy, but increases the temperature of the battery, and the increase of the battery temperature reduces the photoelectric conversion efficiency of the solar cell, so this method exists The contradiction between the photoelectric conversion efficiency and the temperature rise of the battery; at the same time, the end water pump of the gas heat pump consumes more power due to its large power, while solar power generation is greatly affected by the external environment, so it is difficult to ensure that the system is completely independent of the power grid; 3 .Comprehensive utilization of photoelectricity, light and heat to realize independent operation of the system [CN 201410222276.4], this patent only describes the method of comprehensive utilization of photoelectricity, light and heat for heating in winter, and does not provide the way of using light, heat and light for cooling in summer, which has certain limitations .

A very important aspect of gas heat pump technology research is waste heat utilization technology. At present, waste heat utilization of gas heat pumps is mainly used for heating or domestic hot water, but in hot summer, there is no need for heat supply and the demand for hot water Relatively few, so a lot of waste heat can not be effectively used, energy waste is very serious. Therefore, it is of great significance to solve the problems of improving the waste heat utilization rate of the gas heat pump system, reducing the burden on the power system, and improving the utilization efficiency of solar photovoltaic light and heat in winter and summer.

Contents of the invention

The purpose of this utility model is to solve the above problems and provide a de-electricity independent operation compound heat pump air-conditioning system that organically combines solar photovoltaic photothermal utilization technology, internal combustion engine heat pump technology, absorption refrigeration technology and multi-stage transmission technology.

In order to achieve the above purpose, the utility model adopts the following technical solutions: the composite heat pump air-conditioning system with de-energized independent operation is characterized in that the system includes a compressor, and the outlet end of the compressor is sequentially connected with the four The reversing valve, the plate heat exchanger and the electronic expansion valve are connected, and the outlet pipeline of the electronic expansion valve is respectively connected with a photovoltaic photothermal utilization system and a heat pump air conditioning system. Heater and finned tube heat exchanger, the photovoltaic photothermal utilization system includes an inverter controller connected to the photovoltaic heat exchanger, the inverter controller is connected to the power side through the battery, and the compression The engine is connected to the multi-stage mechanical transmission mechanism through the first electromagnetic clutch transmission, and the multi-stage mechanical transmission mechanism is connected to the internal combustion engine. The system also includes a waste heat recovery system, and the waste heat recovery system includes a plate heat exchanger. The user-side return water pipeline, and the user-side return water pipeline is respectively connected with a first return water pipeline and a second water return pipeline.

In the above-mentioned combined heat pump air-conditioning system with de-energized independent operation, the outlet pipeline of the electronic expansion valve is divided into two circuits; The other way of the electronic expansion valve is connected with the refrigerant pipeline of the photovoltaic heat exchanger and the second solenoid valve; the outlet of the first solenoid valve and the outlet of the second solenoid valve are connected with the four-way A reversing valve, and the four-way reversing valve is connected with the inlet of the compressor.

In the above de-energized independent operation composite heat pump air-conditioning system, the cooling water pipeline of the photovoltaic heat exchanger is connected with the seventh shut-off valve, the heat storage tank and the eighth shut-off valve to form a cooling water circuit through pipelines. The refrigerant circuit of the photovoltaic heat exchanger is respectively connected with the finned tube heat exchanger and the second solenoid valve through refrigerant pipes.

In the above-mentioned combined heat pump air-conditioning system with de-energized independent operation, the first return water pipeline includes a plate heat exchanger and a user-side circulating water pump that are sequentially connected to the user-side return water pipeline through pipelines, and the user-side circulation The water pump outlet pipeline is divided into two paths; one path of the user-side circulating water pump is connected to the ninth stop valve and the tenth stop valve through a pipeline; the other path of the user-side circulating water pump is connected to the The first shut-off valve is connected; the outlet of the first shut-off valve is divided into two routes; the first shut-off valve is connected to the jacket water heat exchanger, the flue gas heat exchanger and the second shut-off valve in turn through a pipeline. The other path of the first shut-off valve is connected to the high-temperature water circuit of the lithium bromide refrigeration unit, and the high-temperature water circuit of the lithium-bromide refrigeration unit includes a fifth shut-off valve, a high-temperature water pump, and a lithium bromide refrigeration unit that are sequentially connected to the first shut-off valve through pipelines. The high-temperature pipeline of the unit, the high-temperature pipeline of the lithium bromide refrigeration unit is connected with the high-temperature water tank, the sixth shut-off valve and the flue gas heat exchanger in sequence.

In the above de-energized independent operation compound heat pump air-conditioning system, the second return water pipeline includes a lithium bromide refrigeration unit chilled water circuit connected to the user side return water pipeline, and the lithium bromide refrigeration unit chilled water circuit includes a The third shut-off valve connected to the return water pipeline on the user side, the third shut-off valve is connected to the fourth shut-off valve and the outlet pipeline of the second shut-off valve in turn through the chilled water pipeline of the lithium bromide refrigeration unit.

In the above de-energized independent operation composite heat pump air-conditioning system, the lithium bromide refrigeration unit is connected with a lithium bromide refrigeration unit cooling water loop, and the lithium bromide refrigeration unit cooling water circuit includes a cooling water circuit connected to the lithium bromide refrigeration unit cooling water pipeline A cooling water pump, the cooling water pump is connected with the air cooling tower.

In the above de-energized independent operation composite heat pump air-conditioning system, the user-side circulating water pump, cooling water pump and high-temperature water pump pass through the second electromagnetic clutch transmission, the third electromagnetic clutch transmission, the fourth electromagnetic clutch transmission and the multiple The stage mechanical transmission mechanism is connected, and the start-stop control and speed control of the user-side circulating water pump, cooling water pump and high-temperature water pump are all controlled by an electromagnetic clutch transmission.

In the above-mentioned combined heat pump air-conditioning system with de-energized independent operation, the photovoltaic heat exchanger includes a first aluminum alloy plate and a second aluminum alloy plate arranged parallel to each other, and the cooling water pipeline of the photovoltaic heat exchanger and Refrigerant circuits are alternately arranged between the first aluminum alloy plate and the second aluminum alloy plate, and one side of the first aluminum alloy plate is sequentially provided with several photoelectric glass plates through heat-conducting glue, and the second aluminum alloy plate is The outer surface of the board is provided with a heat insulating material layer.

In the above de-energized independent operation composite heat pump air-conditioning system, the cross-sections of the cooling water pipeline and the refrigerant circuit are square, and the cooling water pipeline and the refrigerant circuit are not connected to each other.

Compared with the prior art, the utility model has the advantages of:

1. The utility model operates in winter. When the solar radiation intensity is good, on the one hand, the solar power is absorbed by the photovoltaic heat exchanger to supply power to the system, and at the same time, the excess electricity is stored in the battery for use in rainy weather and at night. When the refrigerant flows through the photovoltaic heat exchanger, the heat generated by the solar cell is absorbed as the low-temperature heat source of the heat pump system, and the evaporation temperature of the evaporator is increased, which is conducive to improving the energy efficiency ratio of the heat pump system. When it is rainy or at night, this utility model The new type automatically switches through the electric three-way valve, and uses the finned tube heat exchanger to absorb the heat in the outdoor air as a low-temperature heat source to supply heat to the user side.

2. When the utility model is running in summer, the electric three-way valve is automatically switched, and the finned tube heat exchanger is used to discharge the heat in the room to the outdoor air. The natural circulation takes away the heat generated by the photovoltaic heat exchanger due to power generation, which not only improves the photoelectric conversion efficiency of the photovoltaic cell, but also stores the heat in the heat storage tank for use as domestic hot water.

3. In order to reduce the power consumption of the system's electrical equipment and ensure that the system can operate completely independently of the power grid, the utility model adopts a multi-stage mechanical transmission mechanism. The driving power of all water pumps in the system is provided by the internal combustion engine, and the power generation system is only for the control system. And the finned tube heat exchanger fan provides the small amount of power required, which greatly reduces the power consumption of the system. At the same time, the start-stop and speed flow control of each water pump in the system are controlled by the electromagnetic clutch transmission to achieve optimal energy distribution.

4. For the utilization of the waste heat of the internal combustion engine, it is used as a high-temperature heat source in winter to further heat the return water of the system; It can also optimally match the load of the system in winter and summer, reduce the design capacity of the unit, and save investment costs.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a structural sectional view of the photovoltaic heat exchanger of the present invention;

In the figure, compressor 1, plate heat exchanger 2, electronic expansion valve 3, finned tube heat exchanger 4, four-way reversing valve 5, photovoltaic heat exchanger 6, photoelectric glass plate 61, first aluminum alloy plate 62 , second aluminum alloy plate 63, heat insulating material layer 64, cooling water pipeline 65, refrigerant circuit 66, inverter controller 7, battery 8, air cooling tower 9, first solenoid valve 10, second solenoid valve 11, internal combustion engine 12 , cylinder jacket water heat exchanger 13, flue gas heat exchanger 14, lithium bromide refrigeration unit 15, user side circulating water pump 16, cooling water pump 17, high temperature water pump 18, multi-stage mechanical transmission mechanism 19, first electromagnetic clutch transmission 20 , the second electromagnetic clutch speed changer 21, the third electromagnetic clutch speed changer 22, the fourth electromagnetic clutch speed changer 23, the high temperature water tank 24, the hot water storage tank 25, the first stop valve 26, the second stop valve 27, the third stop valve 28, The fourth stop valve 29 , the fifth stop valve 30 , the sixth stop valve 31 , the seventh stop valve 32 , the eighth stop valve 33 , the ninth stop valve 34 , and the tenth stop valve 35 .

detailed description

As shown in Fig. 1 and Fig. 2, the compound heat pump air-conditioning system for de-energized independent operation includes a compressor 1, and the outlet end of the compressor 1 is sequentially connected with the four-way reversing valve 5, the plate heat exchanger 2 and the The electronic expansion valve 3 is connected, and the outlet pipeline of the electronic expansion valve 3 is respectively connected with a photovoltaic photothermal utilization system and a heat pump air conditioning system. The heat pump air conditioning system includes a photovoltaic heat exchanger 6 and a finned tube heat exchanger 4 connected in parallel. The heat utilization system includes an inverter controller 7 connected to the photovoltaic heat exchanger 6, the inverter controller 7 is connected to the power consumption side through the battery 8, and the compressor 1 is connected to the multi-stage mechanical transmission mechanism 19 through the first electromagnetic clutch transmission 20 , and the multi-stage mechanical transmission mechanism 19 is connected to the internal combustion engine 12. This system also includes a waste heat recovery system, and the waste heat recovery system includes a user-side return water pipeline connected to the plate heat exchanger 2, and the user-side return water pipeline is respectively connected to the second A return water line and a second return water line. The heat pump air conditioning system is composed of two outdoor heat exchangers connected in parallel, one is the photovoltaic heat exchanger 6 and the other is the finned tube heat exchanger 4 . During winter operation, the two heat exchangers are used in parallel, and the refrigerant flow through the two heat exchangers is controlled by the solenoid valve according to the superheat of the outlet refrigerant; For heat use, the finned tube heat exchanger 4 is used as a condenser. Among them, the waste heat recovery system here adopts two waste heat utilization methods. During winter operation, the waste heat is used as a high-temperature heat source to further heat the return water of the system and provide the system water supply temperature. Reduce the flow of water supply, thereby reducing the power consumption of water pumps and saving energy; when running in summer, the waste heat is used as the driving heat source of the lithium bromide absorption refrigeration unit, and the heat is converted into cold energy to supply cooling to the user side, which not only maximizes the use of waste heat, but also reduces heat pumps. The cooling capacity of the system effectively saves energy, and the condensation heat and absorption heat generated by the system are cooled by the air cooler and discharged to the outdoor atmosphere.

Among them, the outlet pipeline of the electronic expansion valve 3 here is divided into two paths; one path of the electronic expansion valve 3 is connected with the finned tube heat exchanger 4 and the first electromagnetic valve 10; the other path of the electronic expansion valve 3 is connected with the photovoltaic heat exchanger 6 The refrigerant pipeline is connected to the second solenoid valve 11; the outlet of the first solenoid valve 10 and the outlet of the second solenoid valve 11 are connected to the four-way reversing valve 5 in turn through the pipeline, and the four-way reversing valve 5 is connected to the compressor 1 The import is connected.

Here, the cooling water pipeline 65 of the photovoltaic heat exchanger 6 is connected to the seventh shut-off valve 32, the hot water storage tank 25 and the eighth shut-off valve 33 through pipelines to form a cooling water circuit. The refrigerant circuit of the photovoltaic heat exchanger 6 66 are respectively connected to the finned tube heat exchanger 4 and the second solenoid valve 11 through refrigerant pipes, and the heat generated by the photoelectric glass plate due to power generation is used as a low-temperature heat source of the heat pump system through the refrigerant heat exchange circuit; during summer operation, the photoelectric The heat generated by the glass due to power generation is absorbed by the water through the cooling water circuit, and the heat is stored in the heat storage tank 25 for use as domestic hot water.

Wherein, the first return water pipeline here includes the plate heat exchanger 2 and the user-side circulating water pump 16 which are successively connected to the user-side return water pipeline through pipelines, and the outlet pipeline of the user-side circulating water pump 16 is divided into two paths; the user-side circulating water pump 16 is connected to the ninth shut-off valve 34 and the tenth shut-off valve 35 through pipelines; the other route of the user-side circulating water pump 16 is connected to the first shut-off valve 26; the outlet of the first shut-off valve 26 is divided into two ways; The pipes are sequentially connected to the jacket water heat exchanger 13, the flue gas heat exchanger 14, and the second shut-off valve 27. The other way of the first shut-off valve 26 is connected to the high-temperature water circuit of the lithium bromide refrigeration unit, and the high-temperature water circuit of the lithium bromide refrigeration unit includes The fifth cut-off valve 30, the high-temperature water pump 18 and the high-temperature pipeline of the lithium bromide refrigeration unit 15 connected successively with the first shut-off valve 26 through the pipeline, the high-temperature pipeline of the lithium-bromide refrigeration unit 15 is connected with the high-temperature water tank 24 and the sixth shut-off valve 31 successively And the flue gas heat exchanger 14 is connected, the high-temperature water pump 18, the cooling water pump 17, the compressor 1 and the user side circulating water pump 16 are connected with the internal combustion engine 12 through the multi-stage mechanical transmission mechanism 9 and the electromagnetic clutch transmission, and are provided by the internal combustion engine 12. power.

Here, the second return water pipeline includes the chilled water circuit of the lithium bromide refrigeration unit connected to the return water pipeline on the user side, and the chilled water circuit of the lithium bromide refrigeration unit includes a third shut-off valve 28 connected to the return water pipeline on the user side. The third shut-off valve 28 The chilled water pipeline passing through the lithium bromide refrigeration unit 15 is connected with the outlet pipeline of the fourth shut-off valve 29 and the second shut-off valve 27 in sequence.

Preferably, the lithium bromide refrigeration unit 15 here is connected with a lithium bromide refrigeration unit cooling water circuit, and the lithium bromide refrigeration unit cooling water circuit includes a cooling water pump 17 connected to the cooling water pipeline 65 of the lithium bromide refrigeration unit 15, and the cooling water pump 17 is connected to the air cooling tower 9 connected.

The user-side circulating water pump 16, the cooling water pump 17 and the high-temperature water pump 18 here are connected to the multi-stage mechanical transmission mechanism 19 through the second electromagnetic clutch transmission 21, the third electromagnetic clutch transmission 22, and the fourth electromagnetic clutch transmission 23 respectively, and the user The start-stop control and speed control of the side circulation water pump 16, the cooling water pump 17 and the high-temperature water pump 18 are all controlled by the electromagnetic clutch transmission.

As shown in Figure 2, the photovoltaic heat exchanger 6 here includes a first aluminum alloy plate 62 and a second aluminum alloy plate 63 arranged parallel to each other, and the cooling water pipeline 65 and the refrigerant circuit 66 of the photovoltaic heat exchanger 6 are arranged alternately in sequence Between the first aluminum alloy plate 62 and the second aluminum alloy plate 63, and one side of the first aluminum alloy plate 62 is sequentially provided with several photoelectric glass plates 61 through heat-conducting glue, and the outer surface of the second aluminum alloy plate 63 is provided with heat insulating material Layer 64, prevents heat loss. Here, the cross sections of the cooling water pipeline 65 and the refrigerant circuit 66 are both square, and the cooling water pipeline 65 and the refrigerant circuit 66 do not communicate with each other.

The control method of the composite heat pump air-conditioning system for de-energized independent operation includes the following steps:

A. Winter operation: the photovoltaic heat exchanger 6 and the finned tube heat exchanger 4 are used in parallel, and the photovoltaic panels on the surface of the photovoltaic heat exchanger 6 absorb sunlight to generate electric energy, a part of which is stored in the storage battery 8 as electric energy, and a part of which supplies power to the system , the waste heat recovery system uses waste heat as a high-temperature heat source to further heat the return water of the system, and the waste heat recovery system provides the system water supply temperature;

B. Summer operation: the photovoltaic heat exchanger 6 is only used for power generation and not for heat exchange, the finned tube heat exchanger 4 is used as a condenser, and the waste heat recovery system uses waste heat as the driving heat source of the waste heat recovery system to convert heat into cold The amount of cooling is supplied to the user side.

The specific working process is as follows:

When the utility model operates in winter, the system is in the heating mode, and the third stop valve 28, the fourth stop valve 29, the fifth stop valve 30, the sixth stop valve 31, the seventh stop valve 32, and the eighth stop valve 33 are closed , the ninth shut-off valve 34 and the tenth shut-off valve 35, open the first shut-off valve 26 and the second shut-off valve 27, disconnect the third electromagnetic clutch speed changer 22 and the fourth electromagnetic clutch speed changer 23, close the first electromagnetic clutch speed changer 20 and the second electromagnetic clutch transmission 21, and the four-way reversing valve 5 are reversed, so that the plate heat exchanger 2 is a condenser, and the finned tube heat exchanger 4 or photovoltaic heat exchanger 6 is an evaporator.

When the outdoor solar radiation intensity is strong and the heat absorbed by the photovoltaic heat exchanger meets the heating demand of the heat pump, the first solenoid valve 10 is closed, the second solenoid valve 11 is opened, and the internal combustion engine 12 drives the compressor 1 through a multi-stage mechanical transmission mechanism 19 In operation, the high-temperature and high-pressure refrigerant steam releases heat and condenses into a high-temperature and high-pressure liquid refrigerant in the plate heat exchanger 2, and the high-temperature and high-pressure liquid refrigerant becomes a low-temperature and low-pressure gas-liquid two-phase refrigeration after being throttled by the electronic expansion valve 3 The low-temperature and low-pressure gas-liquid two-phase refrigerant enters the photovoltaic heat exchanger 6 and absorbs the heat generated by the solar photovoltaic panel to become a low-temperature and low-pressure gaseous refrigerant steam, and then enters the compressor 1 to be compressed into a high-temperature and high-pressure refrigerant. The gaseous refrigerant forms a cycle. At the same time, the photoelectric panels on the surface of the photovoltaic heat exchanger 6 absorb sunlight to generate electric energy, a part of which is stored in the storage battery 8 as electric energy, and a part of which supplies power to the system.

The internal combustion engine 12 drives the user-side circulating water pump through the multi-stage mechanical transmission mechanism 19 to provide circulating power for the user-side circulating water. After the user-side return water passes through the plate heat exchanger 2, it absorbs the condensation heat generated by the condensation of high-temperature and high-pressure refrigerant, and the temperature rises. After entering the jacket water heat exchanger 13 and the flue gas heat exchanger 14, it further absorbs the waste heat of the internal combustion engine to raise the temperature and then supplies water to the user.

When the outdoor solar radiation intensity is weak and the heat absorbed by the photovoltaic heat exchanger cannot meet the heat supply demand of the heat pump, the first electromagnetic valve 10 and the second electromagnetic valve 11 are opened at the same time, and the first electromagnetic valve is automatically adjusted by the superheat degree of the outlet refrigerant. The opening of the valve 10 and the second solenoid valve 11 allows a part of the refrigerant to enter the photovoltaic heat exchanger 6 to absorb heat, and another part of the refrigerant enters the finned tube heat exchanger 4 to absorb the heat of the outdoor air, thus ensuring the normal operation of the heat pump system .

When the outdoor is rainy and at night, the first electromagnetic valve 10 is opened, the second electromagnetic valve 11 is closed, and the heat pump system absorbs the heat of the outdoor air through the finned tube heat exchanger 4 to ensure the normal operation of the system.

When the utility model is running in summer, the system is in the cooling mode, close the first stop valve 26 and the second stop valve 27, open the third stop valve 28, the fourth stop valve 29, the fifth stop valve 30, and the sixth stop valve 31 . The seventh cut-off valve 32 , the eighth cut-off valve 33 , the ninth cut-off valve 34 and the tenth cut-off valve 35 . Close the first electromagnetic clutch speed changer 20, the second electromagnetic clutch speed changer 21, the third electromagnetic clutch speed changer 22 and the fourth electromagnetic clutch speed changer 23, and the four-way reversing valve 5 is reversed, so that the plate heat exchanger 2 is an evaporator, and the fins The fin-and-tube heat exchanger 2 is a condenser.

The internal combustion engine 12 drives the compressor 1 to run through the multi-stage mechanical transmission mechanism 19 and the first electromagnetic clutch transmission 20. The high-temperature and high-pressure gaseous refrigerant enters the finned tube heat exchanger 4 and releases heat to the outdoor air to become high-temperature and high-pressure liquid refrigeration. The high-temperature and high-pressure liquid refrigerant becomes a low-temperature and low-pressure gas-liquid two-phase refrigerant after being throttled by the electronic expansion 3, and the gas-liquid two-phase refrigerant enters the plate heat exchanger 2 to absorb heat and becomes a low-temperature and low-pressure gaseous refrigerant , and then enter the compressor to be compressed into a high-temperature and high-pressure gaseous refrigerant to form a cycle.

During the cooling operation in summer, the main function of the photovoltaic heat exchanger 6 is to use the photovoltaic panel to generate electricity, and open the seventh stop valve 32 and the eighth stop valve 33 at the same time, and use the natural circulation of water to take away the heat generated by the photovoltaic panel. Improve the photoelectric conversion efficiency of the photovoltaic panel, and store the heat through the hot water storage tank 25 for use as domestic hot water.

The internal combustion engine 12 drives the user-side circulating water pump 16 through the multi-stage mechanical transmission mechanism 19 and the second electromagnetic clutch transmission 21 to provide circulating power for the user-side circulating water. After feeding the low-temperature and low-pressure gas-liquid two-phase refrigerant, the temperature drops, and then supplies chilled water to the user side through the bypass pipe where the ninth stop valve 34 and the tenth stop valve 35 are located; the other path passes through the third stop valve 28 and enters the lithium bromide absorption The chilled water pipeline of the type refrigerating unit 15 supplies chilled water to the user through the fourth shut-off valve 29 after the temperature of the released heat is lowered.

The cooling water circuit of the lithium bromide refrigeration unit is mainly used for cooling the internal solution absorption heat and condensation heat of the lithium bromide refrigeration unit. The cooling water enters the lithium bromide refrigeration unit 15 through the cooling water pump 17, and enters into the In the air-cooling tower 9, the absorbed heat is released to the air for cooling and then re-enters the cooling water pump 17 to form a cooling cycle. The internal combustion engine 12 drives the cooling water pump through the multi-stage mechanical transmission mechanism 19 to provide circulating power for the cooling water.

The driving heat source of the lithium bromide absorption refrigeration unit 15 mainly comes from the waste heat recovered from the internal combustion engine. The medium temperature water flowing out of the high temperature pipeline of the lithium bromide absorption refrigeration unit 15 passes through the high temperature water pump 18 and the fifth shut-off valve 30 and then enters the cylinder jacket water exchanger. Heater 13 and flue gas heat exchanger 14 absorb heat and become high-temperature water at about 90°C. The high-temperature water enters the lithium bromide absorption refrigeration unit after passing through the sixth stop valve 31 and high-temperature water tank 24, and drives the lithium bromide refrigeration unit to run to release heat. Become middle temperature water and enter high temperature water water pump 18 again, form a circulation. The internal combustion engine 12 drives the high-temperature water pump through the multi-stage mechanical transmission mechanism 19 and the fourth electromagnetic clutch transmission 23 to provide power for the high-temperature water cycle.

The utility model organically combines technologies such as solar thermal storage technology, solar power generation technology, internal combustion engine combustion technology, absorption refrigeration technology, waste heat utilization technology, heat pump technology, heat exchange principle, automatic control, etc. It is a new type of green high-efficiency heat pump air-conditioning system with high energy utilization rate, low environmental pollution, low operating cost and stable operation.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Although this paper uses compressor 1, plate heat exchanger 2, electronic expansion valve 3, finned tube heat exchanger 4, four-way reversing valve 5, photovoltaic heat exchanger 6, photoelectric glass plate 61, first Aluminum alloy plate 62, second aluminum alloy plate 63, heat insulating material layer 64, cooling water pipeline 65, refrigerant circuit 66, inverter controller 7, battery 8, air cooling tower 9, first solenoid valve 10, second solenoid valve 11. Internal combustion engine 12, cylinder jacket water heat exchanger 13, flue gas heat exchanger 14, lithium bromide refrigeration unit 15, user side circulating water pump 16, cooling water pump 17, high temperature water pump 18, multi-stage mechanical transmission mechanism 19, the first Electromagnetic clutch transmission 20, second electromagnetic clutch transmission 21, third electromagnetic clutch transmission 22, fourth electromagnetic clutch transmission 23, high temperature water tank 24, heat storage tank 25, first stop valve 26, second stop valve 27, third Stop valve 28, fourth stop valve 29, fifth stop valve 30, sixth stop valve 31, seventh stop valve 32, eighth stop valve 33, ninth stop valve 34, tenth stop valve 35 and other terms, but not The possibility of using other terms is not excluded. These terms are only used to describe and explain the essence of the utility model more conveniently; interpreting them as any kind of additional limitation is contrary to the spirit of the utility model.

Claims (9)

1. A compound heat pump air-conditioning system with de-energized independent operation is characterized in that the system includes a compressor (1), and the outlet port of the compressor (1) is sequentially connected with the four-way reversing valve (5), The plate heat exchanger (2) is connected to the electronic expansion valve (3), and the outlet pipeline of the electronic expansion valve (3) is respectively connected with a photovoltaic photothermal utilization system and a heat pump air conditioning system, and the heat pump air conditioning system includes mutual A parallel photovoltaic heat exchanger (6) and a finned tube heat exchanger (4), the photovoltaic photothermal utilization system includes an inverter controller (7) connected to the photovoltaic heat exchanger (6), the described The inverter controller (7) is connected to the power consumption side through the battery (8), the compressor (1) is connected to the multi-stage mechanical transmission mechanism (19) through the first electromagnetic clutch transmission (20), and the The multi-stage mechanical transmission mechanism (19) is connected to the internal combustion engine (12), and the system also includes a waste heat recovery system, and the waste heat recovery system includes a user-side return water pipeline connected to the plate heat exchanger (2), and the The user-side return water pipelines are respectively connected with a first water return pipeline and a second water return pipeline. 2. The compound heat pump air-conditioning system with de-electricity independent operation according to claim 1, characterized in that, the outlet pipeline of the electronic expansion valve (3) is divided into two circuits; the outlet pipeline of the electronic expansion valve (3) is divided into one It is connected with the finned tube heat exchanger (4) and the first electromagnetic valve (10); the other way of the electronic expansion valve (3) is connected with the refrigerant pipeline of the photovoltaic heat exchanger (6) and the second electromagnetic valve ( 11) are connected; the outlet of the first solenoid valve (10) is connected with the outlet of the second solenoid valve (11) through pipelines and then connected with the four-way reversing valve (5) in turn, and the four-way reversing valve The valve (5) is connected to the inlet of the compressor (1). 3. The compound heat pump air-conditioning system with de-energized independent operation according to claim 2, characterized in that, the cooling water pipeline (65) of the photovoltaic heat exchanger (6) is sequentially connected with the seventh shut-off valve (32) through the pipeline ) and the hot water storage tank (25) and the eighth stop valve (33) are connected to form a cooling water circuit, and the refrigerant circuit (66) of the photovoltaic heat exchanger (6) exchanges heat with the finned tubes respectively through the refrigerant pipeline Device (4) is connected with the second electromagnetic valve (11). 4. The combined heat pump air-conditioning system with de-electricity independent operation according to claim 3, characterized in that, the first return water pipeline includes a plate heat exchanger (2) which is sequentially connected to the user-side return water pipeline through pipelines and the user-side circulating water pump (16), the outlet pipeline of the user-side circulating water pump (16) is divided into two paths; the user-side circulating water pump (16) passes through the pipeline together with the ninth shut-off valve (34) and the Ten shut-off valves (35) are connected; the other way of the user-side circulating water pump (16) is connected with the first shut-off valve (26); the outlet of the first shut-off valve (26) is divided into two ways; A cut-off valve (26) is connected to the jacket water heat exchanger (13), the flue gas heat exchanger (14) and the second cut-off valve (27) sequentially through pipelines, and the first cut-off valve (26) One path is connected with the high-temperature water circuit of the lithium bromide refrigeration unit, and the high-temperature water circuit of the lithium bromide refrigeration unit includes a fifth shut-off valve (30), a high-temperature water pump (18) and a lithium bromide refrigeration unit that are sequentially connected to the first shut-off valve (26) through pipelines. The high-temperature pipeline of the refrigerating unit (15), the high-temperature pipeline of the lithium bromide refrigerating unit (15) is connected with the high-temperature water tank (24), the sixth shut-off valve (31) and the flue gas heat exchanger (14) in sequence. 5. The compound heat pump air-conditioning system with de-electricity independent operation according to claim 4, characterized in that, the second return water pipeline includes a chilled water circuit of a lithium bromide refrigeration unit connected to the user-side return water pipeline, and the The chilled water circuit of the lithium bromide refrigerating unit includes a third shut-off valve (28) connected to the user side return water pipeline, and the third shut-off valve (28) is sequentially connected with the fourth shut-off valve through the chilled water pipeline of the lithium bromide refrigerating unit (15). The valve (29) is connected to the outlet pipeline of the second stop valve (27). 6. The compound heat pump air-conditioning system with de-electricity independent operation according to claim 4, characterized in that, the lithium bromide refrigeration unit (15) is connected with a lithium bromide refrigeration unit cooling water circuit, and the lithium bromide refrigeration unit cooling water circuit The circuit includes a cooling water pump (17) connected to the cooling water pipeline (65) of the lithium bromide refrigeration unit (15), and the cooling water pump (17) is connected to the air cooling tower (9). 7. The compound heat pump air-conditioning system with de-electricity independent operation according to claim 5, characterized in that, the user-side circulating water pump (16), cooling water pump (17) and high-temperature water pump (18) respectively pass through the second The second electromagnetic clutch transmission (21), the third electromagnetic clutch transmission (22), and the fourth electromagnetic clutch transmission (23) are connected to the multi-stage mechanical transmission mechanism (19), and the user side circulating water pump (16), cooling water The start-stop control and speed control of the water pump (17) and the high-temperature water pump (18) are all controlled by the electromagnetic clutch transmission. 8. The compound heat pump air-conditioning system with de-electricity independent operation according to claim 3, characterized in that, the photovoltaic heat exchanger (6) comprises a first aluminum alloy plate (62) and a second aluminum alloy plate (62) arranged parallel to each other The alloy plate (63), the cooling water pipeline (65) and the refrigerant circuit (66) of the photovoltaic heat exchanger (6) are alternately arranged on the first aluminum alloy plate (62) and the second aluminum alloy plate (63) ), and one side of the first aluminum alloy plate (62) is sequentially provided with several photoelectric glass plates (61) through heat-conducting glue, and the outer surface of the second aluminum alloy plate (63) is provided with a heat insulating material layer (64). 9. The compound heat pump air-conditioning system with de-electricity independent operation according to claim 8, characterized in that, the cross-sections of the cooling water pipeline (65) and the refrigerant circuit (66) are square and the cooling water pipeline ( 65) and the refrigerant circuit (66) are not communicated with each other.