CN207894047U - One kind is that thermal regenerator heat pump couples hot-water heating system with solar energy - Google Patents

Abstract

The utility model discloses a hot water system coupled with an instant heat storage heat pump and solar energy, comprising a solar heat collector, an instant heat sleeve heat exchanger, a coil static heating water tank, a solar heat collector, an instant heat sleeve The tube heat exchanger and the coil static heating water tank are connected in parallel in the water circulation circuit, and the instant thermal casing heat exchanger and the coil static heating water tank are also connected in parallel in the refrigerant circulation circuit. There are air-cooled evaporator, compressor, throttling mechanism. The utility model can supply hot water in three operating modes, namely the casing condenser instant heating supply hot water, coil static heating water tank supply hot water and solar energy supply hot water; coil static heating water tank and solar water tank As a complementary water tank, the solar hot water can be complemented with the coil static heating water tank through internal circulation to improve the system's hot water storage capacity.

Description

An Instant Heat Storage Heat Pump and Solar Energy Coupling Hot Water System

technical field

The utility model relates to the field of heat pumps, in particular to a hot water system coupled with heat storage heat pumps and solar energy.

Background technique

At present, solar water heating system is widely used in civil buildings, and its application process is energy-saving and environmentally friendly. However, its operation is greatly affected by meteorological conditions, and the stability of hot water supply is greatly affected. The air source heat pump hot water system consumes part of the electric energy and draws heat from the natural air side to heat domestic hot water. It is an energy-saving domestic hot water supply solution, but it still needs to consume electric energy and cannot fully utilize clean energy.

Utility model content

The purpose of this utility model is to design a hot water system coupled with heat storage heat pump and solar energy.

In order to achieve the purpose of the above utility model, the technical solution of the utility model is: an instant heat storage heat pump and solar energy coupling hot water system, including a solar collector, an instant thermal casing heat exchanger, a coil static heating water tank , the solar heat collector, the instant thermal casing heat exchanger, and the coil static heating water tank are connected in parallel in the water circulation loop, the solar heat collector includes a solar water tank, and a water temperature sensor is arranged in the solar water tank. The coil static heating water tank is a water temperature stratified water tank. The coil static heating water tank is divided into upper and lower layers through the middle partition, the upper layer is high temperature water, and the lower layer is normal temperature water. The water circulation circuit is equipped with tap water inlet, tap water outlet, and circulating water pump. The first two-way valve controls the flow of water in the instant heat exchanger with two-way valve, and the second two-way valve controls the coil. The water flow in the static heating water tank is cut off, the third two-way valve controls the water flow in the solar collector; the fourth two-way valve and the fifth two-way valve control the on-off and short circuit of the circulating water pump;

The instant heat-type casing heat exchanger and the coil static heating water tank are also connected in parallel in the refrigerant circulation circuit, and the refrigerant circulation circuit is also equipped with an air-cooled evaporator, a compressor, and a throttling mechanism, the sixth and second The on-off valve controls the on-off of the refrigerant in the instant heat sleeve heat exchanger, and the seventh and two-way valve controls on-off of the refrigerant in the coil static heating water tank.

The beneficial effects of the utility model are:

1. The utility model can supply hot water in three operating modes, which are hot water supplied by instant heating of casing condenser, hot water supplied by coil static heating water tank and hot water supplied by solar energy;

2. The coil static heating water tank and the solar water tank of the utility model are complementary water tanks. When the solar energy is sufficient, the solar hot water can be stored in the coil static heating water tank through the internal circulation. When the solar energy is insufficient, the coil can be stored through the internal circulation The hot water of the static heating water tank is stored in the solar water tank, which improves the hot water storage capacity of the system.

3. Prioritize the use of solar energy to supply hot water. When the solar energy is insufficient, the coil static heating water tank is used to supply hot water. When the static heating coil water tank is at a low water level, the instant heat pump unit is directly started to supply hot water to ensure the optimal energy saving of the system. Run the scenario.

Description of drawings

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

Fig. 2 is a structural schematic diagram of a coil static heating water tank.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, an instant heat storage heat pump and solar energy coupling hot water system includes a solar collector 8, an instant heat sleeve heat exchanger 2, and a coil static heating water tank 3. The solar energy The heat collector 8, the instant thermal casing heat exchanger 2, and the coil static heating water tank 8 are connected in parallel in the water circulation circuit A. The solar heat collector 8 includes a solar water tank 9, and a water temperature sensor is arranged in the solar water tank 9 (not shown in the figure), the coil static heating water tank 3 is a water temperature layered water tank, and the coil static heating water tank is divided into upper and lower layers by a partition in the middle, the upper layer is high temperature water, and the lower layer is normal temperature water , the partition 302 can move up and down in the coil static heating water tank 3; the water circulation circuit A is provided with a tap water inlet 1, a tap water outlet 10, and a circulating water pump 7, and the instant heating is controlled by the first two-way valve S1. The water flow in the casing heat exchanger 2 is cut off, the second two-way valve S2 controls the water flow in the coil static heating water tank 3 to be cut off, the third two-way valve S3 controls the water flow in the solar collector 8 to be cut off; The through valve S4 and the fifth two-way valve S5 control the on-off and short-circuit of the circulating water pump 7 .

The instant heat type casing heat exchanger 2 and the coil static heating water tank 3 are also connected in parallel in the refrigerant circulation circuit B, and the refrigerant circulation circuit B is also provided with an air-cooled evaporator 5, a compressor 6, a section In the flow mechanism 4, the sixth two-way valve a1 controls the on-off of the refrigerant in the instant heat exchanger 2, and the seventh two-way valve a2 controls the on-off of the refrigerant in the coil static heating water tank 3.

The control method of the heat storage heat pump and solar energy coupled hot water system is as follows:

Operation mode 1: When the water temperature sensor detects that the water temperature of the solar water tank 9 meets the usage requirements, the third two-way valve S3 and the fourth two-way valve S4 are opened, and the first two-way valve S1, the second two-way valve S2, and the fifth two-way valve are opened. The valve S5 is closed, and the solar water tank 9 is directly used for water supply;

Operation mode two: When the water temperature sensor detects that the water temperature of the solar water tank 9 does not meet the usage requirements, the second two-way valve S2 is opened, the first two-way valve S1, the third two-way valve S3, the fourth two-way valve S4, the fifth two-way valve The through valve S5 is closed, and the coil static heating water tank 3 is used for water supply;

Operation mode three: coil static heating water tank 3 supplies water, when the partition 302 rises to the upper layer B, the first two-way valve S1 opens, the second two-way valve S2, the third two-way valve S3, the fourth two-way valve When the one-way valve S4 and the fifth two-way valve S5 are closed, the instant heat exchanger 2 starts to supply water, and at the same time, the sixth two-way valve a1 is opened, and the instant heat exchanger 2 is fed with refrigerant.

Operation mode 4: In the case of water supply by the instant casing heat exchanger 2, after the water is stopped, if the water temperature in the solar water tank 9 meets the temperature requirements, the circulating water pump 7 is turned on to replenish the hot water from the solar water tank 9 to the coil static heating water tank 3. If the water temperature in the solar water tank 9 does not meet the temperature requirements, start the coil static heating water tank 9, open the seventh two-way valve a2, close the sixth two-way valve a1, and the normal temperature water in the coil static heating water tank 3 is heated , when the water temperature reaches the set value, the second two-way valve S2, the third two-way valve S3 and the fifth two-way valve S5 are opened, the fourth two-way valve S4 is closed, the circulating water pump 7 is started, and the coil static heating water tank The hot water in 3 is replenished to the solar water tank 9 until the water temperature in the solar water tank 9 meets the temperature requirement, thereby improving the system's hot water storage capacity.

The described embodiments are only some of the embodiments of the present utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Claims (1)

1. one kind is thermal regenerator heat pump couples hot-water heating system with solar energy, which is characterized in that including solar thermal collector, instant heating type Double-tube heat exchanger, coil pipe static state heated type water tank, the solar thermal collector, instant heating type double-tube heat exchanger, the heating of coil pipe static state Formula water tank is connected in parallel in water-flow circuit, and the solar thermal collector includes solar water container, is equipped in solar water container Water temperature sensor, the coil pipe static state heated type water tank are water temperature delamination water tank, are heated coil pipe static state by intermediate partition board Formula water tank is divided into upper layer and lower layer, and upper layer is high-temperature water, and lower layer is normal-temperature water, and partition board can be in coil pipe static state heated type water tank up and down It is mobile；It is equipped with tap water water inlet, running water outlet mouth, water circulating pump in the water-flow circuit, passes through the first two-port valve control Flow break-make in instant heating type double-tube heat exchanger is made, the second two-port valve controls the circulation of coil pipe static state heated type Water in Water Tanks and breaks, third Two-port valve controls flow break-make in solar thermal collector；The break-make, short of 4th two-port valve, the 5th two-port valve control loop water pump Road；

The instant heating type double-tube heat exchanger, coil pipe static state heated type water tank are also connected in parallel in refrigerant circulation loop, refrigeration Wind-cooled evaporator, compressor, throttle mechanism are additionally provided in agent circulation loop, the 6th two-port valve controls in instant heating type double-tube heat exchanger Refrigerant break-make, the 7th two-port valve control refrigerant break-make in coil pipe static state heated type water tank.