CN102374697A - Solar ejector household central air conditioning system - Google Patents

Abstract

The invention discloses a solar-injection household central air-conditioning system, aiming to provide a system integrating cooling, heating and hot water supply, driven by solar energy and boosted by an injector. Including solar heat collection cycle system, refrigeration cycle system, hot water supply and heat supply cycle system. The refrigeration cycle system is composed of evaporator, condenser, generator, ejector, refrigerant pump, and thermal expansion valve. The inlet pipe of the ejector is connected with the outlet pipe of the generator in the hot water tank, and the injection pipe of the ejector is Connect to the outlet pipe of the evaporator, connect the outlet pipe of the ejector to the inlet pipe of the condenser, connect the outlet pipe of the condenser to the inlet of the thermal expansion valve and the inlet of the refrigerant pump, and connect the outlet of the refrigerant pump to the hot water collector The inlet of the generator in the box is connected with the connecting pipe, and the outlet of the thermal expansion valve is connected with the inlet of the evaporator. In the invention, the ejector is used to replace the refrigeration compressor, solar energy is used as a heat source, and energy is saved.

Description

Solar Jet Household Central Air Conditioning System

technical field

The present invention relates to a household central air-conditioning system, more specifically, relates to a household central air-conditioning system which integrates cooling, heating and hot water supply, driven by solar energy and boosted by ejectors.

Background technique

With the improvement of people's living standards, the home environment has become an indispensable part of modern life. At present, air conditioners in vapor compression refrigeration systems are refrigerated or heated by electricity, and hot water supply systems with electric water heaters or gas water heaters as independent heat sources are driven by electricity or gas. Therefore, in family life, the use of air conditioners and water heaters needs to consume a certain amount of high-grade energy such as electricity and gas, which does not meet the requirements of sustainable development.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a household central air-conditioning system that integrates cooling, heating and hot water supply, which is driven by solar energy and boosted by an ejector.

The present invention realizes through following technical scheme:

A solar energy injection household central air-conditioning system is characterized in that it includes a solar heat collection circulation system, a refrigeration circulation system, a hot water supply and a heat supply circulation system; the solar heat collection circulation system consists of a solar heat collector, a water collection Tank and heat collection pump, the water inlet pipe of the solar heat collector is connected with the water supply pipe of the heat collection pump, the water outlet pipe of the solar heat collector is connected with the water inlet pipe of the heat collection tank, and the heat collector The outlet pipe of the water tank is connected with the water inlet pipe of the heat collection pump to form a solar heat collection cycle; the refrigeration cycle system consists of an evaporator, a condenser, a generator placed in the heat collection tank, an ejector, a refrigeration Composed of agent pump and thermal expansion valve, the inlet connection pipe of the ejector is connected with the outlet connection pipe of the generator in the hot water tank, the injection connection pipe of the ejector is connected with the outlet connection pipe of the evaporator, and the outlet connection pipe of the ejector is The outlet connecting pipe is connected with the inlet connecting pipe of the condenser, the outlet connecting pipe of the condenser is respectively connected with the inlet of the thermal expansion valve and the inlet of the refrigerant pump, and the outlet of the refrigerant pump is connected with the generator in the hot water tank The inlet pipe is connected, and the outlet of the thermal expansion valve is connected with the inlet pipe of the evaporator to form a refrigeration cycle; the hot water supply and heat supply cycle system is composed of a heat supply pipe, a water stop valve, a water supply stop valve, a heat supply It consists of a shut-off valve and a heat supply pump. The inlet of the heat supply pump is connected to the outlet connection pipe of the heat supply pipe placed in the underfloor space, and the outlet of the heat supply pump is connected to the return water connection pipe of the hot water tank. The water supply connecting pipes are respectively connected to the inlets of the water shut-off valve, the water supply shut-off valve and the heating shut-off valve, and the outlet of the heating shut-off valve is connected to the inlet of the heating pipe; the outlet connecting pipe of the water supply shut-off valve is connected in parallel with the outlet connecting pipe of the heating pipe Then connect to the inlet of the heat pump.

An auxiliary heater is installed in the hot water tank.

The replenishment shut-off valve is connected with the replenishment pipe of the hot water tank, and the replenishment is controlled by the float valve.

The evaporator is placed on the top of the chamber.

The refrigeration cycle system uses R290 as the refrigerant.

The present invention has following technical effect:

1. The solar energy injection household central air-conditioning system of the present invention uses an ejector to replace a refrigeration compressor, and uses solar energy as a heat source to drive a vapor compression refrigeration system air conditioner for room cooling or heating, and at the same time provides domestic hot water. The refrigeration system adopts green The natural working medium R290 is a refrigeration working medium, which saves energy, protects the environment, greatly reduces costs, and meets the requirements of environmental protection.

2. The solar spray household central air-conditioning system of the present invention is a multi-functional environmental protection and energy-saving household central air-conditioning system integrating refrigeration, heating and hot water supply. It has a simple structure, convenient operation, environmental protection and energy saving, convenient control, and safety reliable.

Description of drawings

Fig. 1 is the schematic diagram of solar energy injection household type central air-conditioning system of the present invention;

Fig. 2 is the connection schematic diagram of the hot water tank of the present invention;

Fig. 3 is a schematic diagram of the connecting pipe of the injector of the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The schematic diagrams of the solar spray household central air-conditioning system of the present invention are shown in Figures 1-3, including a solar heat collection cycle system, a refrigeration cycle system, a hot water supply and a heat supply cycle system. The solar heat collection cycle system is composed of a solar heat collector 1, a heat collection tank 15, and a heat collection pump 13. The water inlet connection of the solar heat collector 1 is connected with the water supply connection of the heat collection pump 13. The water outlet connecting pipe of the heat collector 1 is connected with the water inlet connecting pipe 19 of the collecting water tank 15, and the water outlet connecting pipe 24 of the collecting water tank 15 is connected with the water inlet connecting pipe of the collecting water pump 13 to form a solar heat collecting cycle. The refrigerating cycle system is composed of an evaporator 2, a condenser 9, a generator 12 placed in the hot water tank 15, an ejector 18, a refrigerant pump 10, and a thermal expansion valve 17. The refrigerating cycle system adopts R290 is a refrigerant. The injector adopts a conventional injector structure consisting of a nozzle, a mixing chamber and a diffuser. The inlet connecting pipe 25 of the injector 18 is connected with the outlet connecting pipe 20 of the generator 12 in the hot water tank, the injection connecting pipe 26 of the ejector is connected with the outlet connecting pipe of the evaporator 2, and the outlet connecting pipe of the ejector 27 is connected to the inlet of the condenser 9, the outlet of the condenser 9 is respectively connected to the inlet of the thermal expansion valve 17 and the inlet of the refrigerant pump 10, and the outlet of the refrigerant pump 10 is connected to the hot water tank The inlet connection pipe 21 of the inner generator is connected, and the outlet of the thermal expansion valve 17 is connected with the inlet connection pipe of the evaporator 2 to form a refrigeration cycle. The hot water supply and heat supply cycle system is composed of a heat supply pipe 5, a water shut-off valve 6, a water supply shut-off valve 7, a heat supply shut-off valve 8, and a heat supply pump 11. The entrance of the heat supply pump 11 is placed under the floor 4 The outlet of the heat supply pipe 5 in the space is connected to the outlet, and the outlet of the heat pump 11 is connected to the return water connection pipe 23 of the hot water tank 15. The valve 7 is connected to the inlet of the heat supply cut-off valve 8, and the outlet of the heat supply cut-off valve 8 is connected to the inlet of the heat supply pipe 5; The inlet of 11 is connected, and the replenishment shut-off valve 14 is connected with the replenishment connecting pipe 31 of the hot water tank 15, and the replenishment is controlled by the float valve. The evaporator 2 is placed on the top of the room 3, and the water shut-off valve 6 is placed in the place where hot water is needed in the room.

In order to ensure the normal operation of the system in winter and rainy days, an auxiliary heater 16 is installed in the water collecting tank.

Utilizing the solar energy injection household central air-conditioning system of the present invention can provide refrigeration, heat supply and hot water supply for the modern living environment according to the needs of different seasons, so as to meet the needs of the living environment in different seasons.

Under the operation mode of supplying hot water and cooling in summer, start the refrigerant pump 10 and the water collecting water pump 13, the water in the heat collecting cycle receives the solar heat source in the solar heat collector 1, and after the temperature rises, it goes to the water collecting water tank 15. The refrigerant R290 liquid in the tube of the generator 12 absorbs the heat of the hot water in the hot water tank 15 outside the tube to form high-temperature and high-pressure steam. The R290 high-temperature and high-pressure steam expands through the nozzle 28 in the injector 18 and flows at a high speed. The outlet of 28 causes a very low pressure, because the outflow velocity is high and the pressure is low, it attracts the low-pressure R290 vapor generated in the evaporator 2, enters the mixing chamber 29 of the injector 18, and enters the diffuser after mixing with the vapor in the mixing chamber In the diffuser 30, the flow rate decreases and the pressure increases and enters the condenser 9. The high-temperature and high-pressure liquid refrigerant R290 coming out of the condenser 9 is divided into two paths, and one path is throttled and reduced by the thermal expansion valve 17 before entering the evaporator. 2. One way passes through the refrigerant pump 10 and enters the generator 12 in the hot water tank 15 . Since the R290 in the evaporator 2 needs to absorb latent heat from the unvaporized R290 when it is vaporized, the temperature of the unvaporized R290 is lowered. This part of the low-temperature R290 absorbs the heat of the room in the evaporator 2 and is used for room cooling. Provide a cooling source for the living space in summer. When using domestic hot water, start the heat supply pump 11, close the heat supply shut-off valve 8, open the water supply shut-off valve 7, and the domestic hot water returns to the heat collector from the hot water tank 15 through the water supply connection pipe 22, the water supply shut-off valve 7 and the heat supply pump 11. The water tank 15 forms a hot water supply cycle, and the water shut-off valve 6 is opened at any time to use domestic hot water.

Under the operating mode of supplying hot water and heating in winter, start the water collecting water pump 13, the water in the heat collecting cycle receives the solar heat source in the solar heat collector 1, and after the temperature rises, it goes to the water collecting water tank 15; start the heat supply pump 11 , open the water supply shut-off valve 7, open the heat supply shut-off valve 8, the hot water in the hot water tank 15 enters the heat supply pipe 5 under the floor 4 through the heat supply shut-off valve 8 to release heat, and returns to the heat collector through the heat supply pump 11 The water tank 15 provides heat source for the living space in winter. At the same time, open the water supply cut-off valve 7, domestic hot water will pass through the water supply connection pipe 22 from the hot water collection tank 15, the water supply cut-off valve 7, and return to the hot water collection tank 15 through the heat supply pump 11 to form a hot water supply cycle, and open the water supply cut-off valve 6 at any time , you can use domestic hot water.

In the weather that does not need cooling and heating, start the water collection pump 13, start the heat supply pump 11, the water in the heat collection cycle receives the solar heat source in the solar heat collector 1, and after the temperature rises, it goes to the water collection tank 15 and closes Heat supply shut-off valve 8, open water supply shut-off valve 7, open water shut-off valve 6 at any time, can use domestic hot water.

Claims (5)

1. A solar energy injection household type central air-conditioning system is characterized in that it comprises a solar heat collection cycle system, a refrigeration cycle system, a hot water supply and a heat supply cycle system; the solar heat collection cycle system consists of a solar heat collector, a collector The water inlet pipe of the solar collector is connected with the water supply pipe of the heat collection pump, and the water outlet pipe of the solar collector is connected with the water inlet pipe of the heat collection tank. The water outlet pipe of the water collecting tank is connected with the water inlet pipe of the water collecting water pump to form a solar energy heat collecting cycle; , a refrigerant pump, and a thermal expansion valve. The inlet connection pipe of the ejector is connected to the outlet connection pipe of the generator in the hot water tank, and the injection connection pipe of the ejector is connected to the outlet connection pipe of the evaporator. The outlet connecting pipe of the condenser is connected with the inlet connecting pipe of the condenser, the outlet connecting pipe of the condenser is respectively connected with the inlet of the thermal expansion valve and the inlet of the refrigerant pump, and the outlet of the refrigerant pump is connected with the The inlet pipe of the generator is connected, and the outlet of the thermal expansion valve is connected with the inlet pipe of the evaporator to form a refrigeration cycle; the hot water supply and heat supply cycle system is composed of a heat supply pipe, a water shut-off valve, a water supply shut-off valve, It consists of a heat supply cut-off valve and a heat supply pump. The inlet of the heat supply pump is connected to the outlet connection pipe of the heat supply pipe placed in the underfloor space, and the outlet of the heat supply pump is connected to the return water connection pipe of the hot water tank. The water supply connecting pipe of the water tank is respectively connected with the inlet of the water shut-off valve, the water supply shut-off valve and the heating shut-off valve, the outlet of the heating shut-off valve is connected with the inlet of the heating pipe; the outlet connecting pipe of the water supply shut-off valve is connected with the outlet of the heating pipe Connect the pipes to the inlet of the heat pump after connecting them in parallel. 2. The solar-injection household central air-conditioning system according to claim 1, wherein an auxiliary heater is installed in the water collecting tank. 3. The solar-injection household central air-conditioning system according to claim 1, the evaporator is placed on the top of the room. 4. The solar-injection household central air-conditioning system according to claim 1, wherein the refrigeration cycle system uses R290 as the refrigerant. 5. The solar-injection household central air-conditioning system according to claim 1, characterized in that the water replenishment shut-off valve is connected to the water replenishment connection pipe of the hot water tank, and the water replenishment is controlled by the float valve.

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