CN203823962U - Household photovoltaic direct current transducer air conditioner supplying hot water - Google Patents

Abstract

The utility model relates to a photovoltaic DC frequency conversion air conditioner, in particular to a household photovoltaic DC frequency conversion air conditioner with hot water supply. The circuit part of the photovoltaic array is connected to the solar controller, and the solar controller is respectively connected to the battery pack and the control unit of the DC inverter air conditioner; the photovoltaic cooling device is connected to the heat storage tank through pipelines, and the steam side of the heat exchanger is connected to the DC inverter through pipelines The inverter air conditioner is connected, and the cold water side is connected to the heat storage tank through pipelines. The photovoltaic array provides DC power for the DC inverter air conditioner, and the photovoltaic cooling device stores the heat absorbed from the photovoltaic array in the hot water storage tank in the form of hot water. The heat exchanger recovers the condensation heat of the DC inverter air conditioner to heat domestic water, and the Hot water is stored in a storage tank. The utility model does not need power supply from the power grid, effectively utilizes the solar radiation energy and the condensation heat of the air conditioner, provides domestic water while supplying cooling, and improves the comprehensive utilization rate of solar energy and the refrigeration efficiency of the DC inverter air conditioner.

Description

Home Photovoltaic DC Inverter Air Conditioner with Hot Water Supply

technical field

The utility model relates to a photovoltaic DC frequency conversion air conditioner, in particular to a household photovoltaic DC frequency conversion air conditioner with hot water supply. the

Background technique

At present, the known forms of solar refrigeration mainly include solar absorption refrigeration, solar adsorption refrigeration, solar jet refrigeration, solar semiconductor refrigeration, and solar photovoltaic compression refrigeration, among which solar absorption refrigeration technology and solar photovoltaic compression refrigeration technology are relatively mature. However, at present, my country cannot realize the commercial production of low-power lithium bromide refrigerators, which are not suitable for home users. Photovoltaic compression refrigeration can choose the size of photovoltaic cell array according to needs, and conventional vapor compression refrigeration equipment can be used. It has the characteristics of simple principle and stable operation, and is more suitable for home users. Chinese Patent Document No. CN101917054A disclosed a DC inverter air conditioner with solar cells on December 15, 2010, including solar cells, DC inverter air conditioners, and a solar power supply controller connected between the solar cells and DC inverter air conditioners And mains power grid, solar power supply controller includes DC-high voltage DC inverter and MPPT control unit. When the air conditioner is running, the solar photovoltaic panel converts the absorbed solar radiation energy into electric energy and directly supplies power to the DC inverter air conditioner through the solar power supply controller. There is no DC/AC inverter process in the middle, which reduces power loss. In terms of inverter air conditioners in the DC/AC inverter link, the utilization efficiency of solar energy is improved. the

However, the DC inverter air conditioner with solar cells still has deficiencies: firstly, the DC inverter air conditioner with solar cells also needs the joint power supply of the mains power grid and cannot operate independently; secondly, the DC inverter air conditioner with solar cells improves the utilization of solar energy. Efficiency is limited. Generally, the photoelectric conversion efficiency of solar photovoltaic cells is about 15%, and the remaining 80% of solar energy is absorbed or reflected by solar photovoltaic panels, and solar cells absorb solar radiation to increase their temperature, and their photoelectric conversion The efficiency decreases, and the relative efficiency of photoelectric conversion decreases by about 0.5% for every 1°C increase in the temperature of the solar cell; again, the DC inverter air conditioner releases the condensation heat to the surrounding environment through the outdoor fan, which not only wastes energy materials, but also affects the environment. Caused "heat pollution". the

Contents of the invention

The purpose of this utility model is to provide a household photovoltaic DC inverter air conditioner with simple structure, small space occupation, stable operation, energy saving, no power grid power supply, and domestic hot water supply at the same time. The cooling efficiency of inverter air conditioners reduces "heat pollution", and provides a household air conditioner that can operate independently and supply domestic hot water for remote areas without electricity. the

In order to achieve the above object, the technical solution adopted by the utility model is:

The circuit part of the photovoltaic array is connected with the solar controller, and the solar controller is respectively connected with the battery pack, the circulating water pump, and the DC inverter air conditioner control unit of the DC inverter air conditioner; the DC inverter air conditioner control unit is respectively connected to the brushless DC inverter compressor through wires. machine, indoor DC fan, and outdoor DC fan; a photovoltaic cooling device is installed on the photovoltaic array, and the two ends of the photovoltaic cooling device are connected to the heat storage tank through pipelines, and a circulating water pump is provided; the steam side of the heat exchanger passes through the pipeline It is connected with the DC inverter air conditioner, the cold water side of the heat exchanger is connected with the heat storage tank through pipelines, and a circulating water pump is provided. the

The photovoltaic array is composed of multiple photovoltaic modules connected in series and parallel. The storage battery pack is composed of multiple storage batteries connected in series and parallel. the

The solar controller includes a maximum power point tracking (MPPT) control unit, a DC/DC converter, and a battery charge and discharge detection control unit. The MPPT control unit can ensure that the solar battery always operates at the maximum power point, and the DC/DC controller can Ensure that the solar battery outputs a stable voltage to the DC inverter air conditioner and the battery pack, and the battery detection and control unit can prevent the battery from overcharging and overdischarging, prolonging the life of the battery. the

The storage battery pack ensures that the DC inverter air conditioner can run stably for a period of time when the solar panel generates insufficient power or does not generate power in rainy days. the

In the DC inverter air conditioner, the brushless DC inverter compressor, four-way valve, condenser, and evaporator are sequentially connected through pipelines; The other end is connected to the condenser. the

The photovoltaic cooling device is made of a heat absorbing plate, a metal flat tube, and an insulating layer sequentially pressed together in a frame; wherein, the heat absorbing plate is closely attached to the bottom of the solar panel of the photovoltaic array. The metal flat tube takes away the heat energy of the photovoltaic array through the fluid, reduces the temperature of the solar panel, and ensures that the solar panel has a high photoelectric conversion efficiency. the

A fourth valve is set between the photovoltaic cooling device and the circulating water pump. the

A second valve is provided between the four-way valve and the heat exchanger; a bypass pipe is provided between the four-way valve and the condenser, and a first valve is provided on the bypass pipe. the

A third valve is arranged between the heat exchanger and the circulating water pump. the

The first valve, the second valve, the third valve and the fourth valve are manual valves or automatic control valves. the

The motor of the circulating water pump is a brushless DC motor. the

A throttling device connected to the control unit of the DC inverter air conditioner is arranged between the condenser and the evaporator of the DC inverter air conditioner, and the energy-saving device adopts an electronic expansion valve; the motors of the indoor DC fan and the outdoor DC fan are brushless DC motor. the

The heat storage tank is provided with tap water inlet and hot water outlet. the

The photovoltaic cooling device, the hot water storage tank, the circulating water pump, and the fourth valve are sequentially connected through pipelines to form a circulating loop. The cold water side of the heat exchanger is sequentially connected with the heat storage tank, the circulating water pump and the third valve through pipelines to form a circulating loop. The photovoltaic cooling device and the heat exchanger share a circulating water pump. the

The photovoltaic array provides the DC inverter air conditioner with the DC power required for cooling. The photovoltaic cooling device stores the heat absorbed from the photovoltaic array in the hot water storage tank in the form of hot water, and the heat exchanger recovers the condensation heat of the DC inverter air conditioner for heating. For domestic water, hot water is stored in storage tanks. the

The beneficial effects of the utility model are:

The utility model provides a household air conditioner that simultaneously supplies cooling and domestic hot water. When there is no auxiliary power supply from the grid, the solar radiation energy can be fully utilized, the comprehensive utilization rate of solar energy can be improved, and part of the condensed heat of the air conditioner can be recovered at the same time. The energy loss is reduced, and the energy utilization rate of the air conditioner is improved. A domestic air conditioner capable of independent operation and supplying domestic hot water is provided for remote areas without electricity. the

Description of drawings

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

Fig. 2 is a cross-sectional view of cooling device A-A of the present utility model;

Fig. 3 is a longitudinal sectional view of the utility model cooling device A-A. the

Labels in the figure:

1-Photovoltaic array, 2-Solar controller, 3-Battery pack, 4-DC inverter air conditioner, 5-Heat exchanger, 6-Hot water storage tank, 7-Circulating water pump, 8-MPPT control unit, 9-Battery Charge and discharge detection control unit, 10-DC/DC converter, 11-DC inverter air conditioner control unit, 12-brushless DC inverter compressor, 13-four-way valve, 14-outdoor DC fan, 15-condenser, 16 -Electronic expansion valve, 17-Indoor DC fan, 18-Evaporator, 19-Bypass pipe, 20-First valve, 21-Second valve, 22-Third valve, 23-Fourth valve, 24-Photovoltaic cooling Device, 25-tap water inlet, 26-hot water outlet, 27-solar panel, 28-heat absorption plate, 29-frame, 30-metal flat tube, 31-insulation layer, 32-photovoltaic cooling device outlet, 33- The upper water port of the photovoltaic cooling device, 34-junction box. the

Detailed ways

The utility model provides a household photovoltaic DC inverter air conditioner with hot water supply. The utility model will be further described below in conjunction with the accompanying drawings and specific implementation methods. the

As shown in Fig. 1, a kind of household photovoltaic DC inverter air conditioner with hot water supply includes photovoltaic array 1, photovoltaic cooling device 24, solar controller 2, battery pack 3, DC inverter air conditioner 4, heat exchanger 5, Circulating water pump 7, heat storage tank 6. the

The junction box 34 of the photovoltaic array 1 is connected with the solar controller 2 through wires, and the solar controller 2 is respectively connected with the battery pack 3, the circulating water pump 7, and the DC inverter air conditioner control unit 11 of the DC inverter air conditioner 4 through wires; The controller control unit 11 is respectively connected with the brushless DC inverter compressor 12, the electronic expansion valve 16, the indoor DC fan 17, and the outdoor DC fan 14 in the DC inverter air conditioner 4 through wires. The photovoltaic cooling device 24, the hot water storage tank 6, the circulating water pump 7, and the fourth valve 23 are sequentially connected through pipelines to form a circulation loop. The brushless DC inverter compressor 12 is sequentially connected with the four-way valve 13, condenser 15, electronic expansion valve 16, and evaporator 18 through pipelines to form a circulation loop; the vapor side of the heat exchanger 5 is connected to the four-way valve 13 through pipelines. Between the condenser 15 and a bypass pipe 19, a second valve 21 is provided between the four-way valve 13 and the heat exchanger 5, a first valve 20 is arranged on the bypass pipe 19, and the cold water of the heat exchanger 5 The side is connected with the hot water storage tank 6, the circulating water pump 7, and the third valve 22 sequentially through pipelines to form a circulating loop. the

The solar controller 2 includes an MPPT control unit 8 (maximum power point tracking control unit), a DC/DC converter 10 , and a storage battery charge and discharge detection control unit 9 . The MPPT control unit 8 can ensure that the solar battery always operates at the maximum power point, the DC/DC controller 10 can ensure that the solar battery outputs a stable voltage to the DC inverter air conditioner and the battery pack, and the battery detection control unit 9 can prevent the battery from being overcharged and overcharged. Discharge, prolong battery life. the

As shown in FIG. 2 and FIG. 3 , the photovoltaic cooling device 24 is made by sequentially pressing a heat absorbing plate 28 , a metal flat tube 30 , and an insulating layer 31 in a frame 29 . The heat absorbing plate 28 is closely attached to the lower surface of the solar panel 27 . the

As shown in Figure 1, a household photovoltaic DC inverter air conditioner with hot water supply provides cooling during the day while providing domestic hot water in the following mode: the junction box 34 of the photovoltaic array 1 is connected to the solar controller 2 through wires, and the solar energy The controller 2 is respectively connected to the battery pack 3, the circulating water pump 7, and the control unit 11 of the DC inverter air conditioner through wires; the control unit 11 of the DC inverter air conditioner is connected to the brushless DC inverter compressor 12, the electronic expansion valve 16, and the indoor The DC blower 17 and the outdoor DC blower 14 are connected, and the photovoltaic array 1 provides the DC power needed for cooling for the DC inverter air conditioner 4 . The photovoltaic cooling device 24, the hot water storage tank 6, the circulating water pump 7, and the fourth valve 23 are sequentially connected through pipelines to form a circulation loop. The circulating water pump 7 forces the circulating water to enter the photovoltaic cooling device 24 from the upper water port 33 of the photovoltaic cooling device to reduce solar energy. According to the temperature of the battery board 27, the heated circulating water enters the hot water storage tank 6 through the water outlet 32 of the photovoltaic cooling device, and stores it therein for daily needs. The vapor side of the heat exchanger 5 is connected between the four-way valve 13 and the condenser 15 through a pipeline, and a bypass pipe 19 is provided. A second valve 21 is provided between the four-way valve 13 and the heat exchanger 5, and a first valve 20 is provided on the bypass pipe 19. The cold water side of the heat exchanger 5 is connected with the heat storage tank 6 and the circulating water pump 7 , and the third valve 22 are sequentially connected to form a circulation loop. When the DC inverter air conditioner 4 is cooling, the first valve 20 on the bypass pipeline is closed, and the high-temperature and high-pressure refrigerant vapor from the brushless DC inverter compressor 12 first passes through the heat exchanger 5 for heat exchange, and the heat exchanger 5 recovers part The condensation heat of the DC inverter air conditioner 4 heats the domestic water and stores it in the hot water storage tank 6 for daily use. The hot water storage tank 6 replenishes water through the tap water inlet 25 , and supplies hot water to users through the hot water outlet 26 . the

The above-mentioned embodiment is a preferred implementation mode of the present utility model, but the implementation mode of the present utility model is not limited by the above-mentioned embodiment, and all simple improvements, changes, modifications or the like carried out by those skilled in the art on the basis of the utility model Effective structural transformation is all included within the protection scope of the present utility model. the

Claims (10)

1. A domestic photovoltaic DC inverter air conditioner with hot water supply, characterized in that: the circuit part of the photovoltaic array (1) is connected to the solar controller (2), and the solar controller (2) is connected to the battery pack (3) respectively , the circulating water pump (7), and the DC inverter air conditioner control unit (11) of the DC inverter air conditioner (4); the DC inverter air conditioner control unit (11) is respectively connected to the brushless DC inverter compressor (12), the indoor The DC blower (17) and the outdoor DC blower (14) are connected; a photovoltaic cooling device (24) is arranged on the photovoltaic array (1), and the two ends of the photovoltaic cooling device (24) are connected with the heat storage tank (6) through pipelines, A circulating water pump (7) is also provided; the steam side of the heat exchanger (5) is connected to the DC inverter air conditioner (4) through a pipeline, and the cold water side of the heat exchanger (5) is connected to the heat storage tank (6) through a pipeline. ) connection, and a circulating water pump (7). the 2. The household photovoltaic DC inverter air conditioner with hot water supply according to claim 1, characterized in that, in the DC inverter air conditioner (4), a brushless DC inverter compressor (12), a four-way valve ( 13), the condenser (15), and the evaporator (18) are sequentially connected through pipelines; the vapor side of the heat exchanger (5) is connected to the four-way valve (13) of the DC inverter air conditioner (4) through one end of the pipeline. ) connection, and the other end is connected to the condenser (15). the 3. The household photovoltaic DC inverter air conditioner with hot water supply according to claim 1, characterized in that, the photovoltaic cooling device (24) is composed of a heat absorbing plate (28), a metal flat tube (30), a thermal insulation The layers (31) are sequentially press-fitted in the frame (29); wherein, the heat absorbing plate (28) is closely attached to the bottom of the solar panel (27) of the photovoltaic array (1). the 4. The household photovoltaic DC inverter air conditioner with hot water supply according to claim 1, characterized in that a fourth valve (23) is arranged between the photovoltaic cooling device (24) and the circulating water pump (7). the 5. The household photovoltaic DC inverter air conditioner with hot water supply according to claim 2, characterized in that, a second valve (21) is provided between the four-way valve (13) and the heat exchanger (5); A bypass pipe (19) is provided between the four-way valve (13) and the condenser (15), and a first valve (20) is provided on the bypass pipe (19). the 6. The household photovoltaic DC inverter air conditioner with hot water supply according to claim 1, characterized in that a third valve (22) is arranged between the heat exchanger (5) and the circulating water pump (7). the 7. The household photovoltaic DC inverter air conditioner with hot water supply according to claim 4, 5 or 6, characterized in that the first valve (20), the second valve (21), the third valve (22 ), the fourth valve (23) is a manual valve or an automatic control valve. the 8. The household photovoltaic DC inverter air conditioner with hot water supply according to claim 1, characterized in that the motor of the circulating water pump (7) is a brushless DC motor. the 9. The household photovoltaic DC inverter air conditioner with hot water supply according to claim 2, characterized in that, the condenser (15) and the evaporator (18) of the DC inverter air conditioner (4) are provided with The throttling device connected to the DC frequency conversion air conditioner control unit (11) adopts an electronic expansion valve (16); the motors of the indoor DC fan (17) and the outdoor DC fan (14) are brushless DC motors. the 10. The household photovoltaic DC inverter air conditioner with hot water supply according to claim 1, characterized in that, the hot water storage tank (6) is provided with a tap water inlet (25) and a hot water outlet (26). the