JPS58187767A - Absorption type heat pump air-conditioning hot-water supply system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an absorption heat pump cooling/heating hot water supply system.

Conventionally, there has been a device of this type as shown in FIG. FIG. 1 will be explained.

The refrigerant gas generated from the concentrated liquid heated by the burner 17 in the generator 1 passes through the pipe 2, passes through the solid line part of the four-way valve 3, enters the condensation heat heat exchanger 5 from the pipe 4, and enters the hot water storage tank 30. The refrigerant gas that exchanged heat with the supplied water condenses and becomes a high-pressure liquid refrigerant.

The liquid refrigerant entering from the port 6a of the three-way valve 60 enters the lower a of the three-way valve 7 through the port 6c and exits to 7C, is depressurized by the expansion valve 8, evaporates in the heat exchanger 9, and removes evaporation heat from the air by the fan 18. Cooling is performed.

The evaporated low-pressure refrigerant gas passes through the pipe line 1o, passes through the solid line portion of the four-way valve 3, and enters the mixer 12 from the pipe line 11.

On the other hand, the diluted refrigerant gas in the generator 1 enters the mixer 12 through the pipe line 13, is mixed with the refrigerant gas, and enters the absorber 14. The concentrated liquid that has absorbed the refrigerant gas in the absorber 14 is sent to the generator 1 through a pipe 15 by a solution pump 16. The absorbed heat generated in the absorber 14 is transferred to a cooling heat medium (for example, antifreeze, etc.) and converted into hot water.
After entering the hot water storage tank 30 and exchanging heat with the water, the three-way valve 24
The water enters from the port 24a, exits from the port 24c, passes through the pipe line 26, and enters the absorber 14. When the hot water supply port 29 is opened to supply hot water, city water enters the hot water storage tank 3o from the water supply pipe 28 and enters the condensing heat heat exchanger 5.
The hot water is heated by natural convection by the heat exchanger 23 and the hot water supply port 2.
Hot water is supplied from 9 onwards.

When the temperature inside the hot water storage tank 3o rises sufficiently, it becomes difficult to exchange heat by natural convection between the condensation heat heat exchanger 6 and the heat exchanger 23 in the hot water storage tank 30, so the three-way valve 24 operates and the air-cooled heat is transferred. The heat absorbed by the absorber 14 is radiated by the exchanger 26 and the F/27. In addition, the three-way valve 7 operates, and the condensation heat is radiated by the air-cooled heat exchanger 19 and fan 2o.

During heating, the four-way valve 3 operates to remove the high temperature and heat generated by the generator 1.
The high-pressure refrigerant gas passes through the conduit 2, passes through the broken line portion of the four-way valve 3, enters the heat exchanger 9 through the conduit 10, and radiates condensed heat by the fan 18, thereby heating the room. The heat of condensation is radiated to become a high-pressure liquid refrigerant, which is depressurized through an expansion valve 8, enters an air-cooled heat exchanger 19, absorbs heat from the outside air by a fan 20, and evaporates to become a low-pressure refrigerant gas. Thereafter, it passes through the lower b and lower d of the three-way valve 7, exits from the mouth 6C of the three-way valve 6 to 6b, passes through the conduit 4, passes through the broken line of the four-way valve 3, and enters the mixer 12 through the conduit 11. The circulation of the solution is the same as during cooling. The absorbed heat generated in the absorber 14 heats the water supplied in the hot water storage tank 30 in the heat exchanger 23, as in the case of cooling.

As explained above, the heat exchanger 23 for exchanging heat with the cooling heat medium of the absorber 14 is provided in the hot water storage tank 3o, and the condenser heat exchanger 6 is provided in the lower layer of the heat exchanger 23, so that the water in the hot water storage tank 30 is naturally drained. City water is heated by convection and supplied from the water supply pipe 28 to the hot water supply port 29
There were already some that were supplying hot water from. However, the hot water tank 30
Heat exchanger 6 for condensing heat and heat exchanger 2 heat the water inside.
3, heating is done by natural convection, so the heat transfer rate is poor and it takes time for the temperature of the water supply in the hot water storage tank 3o to rise.
Further, when the water temperature in the hot water storage tank 30 rises, the condensing heat heat exchanger 6. The temperature difference with the heat exchanger 23 decreases, and the amount of heat exchange decreases. Therefore, it takes time to raise the temperature to the heating source temperature. If hot water is supplied when the water temperature in the hot water storage tank 30 has not risen sufficiently, there are problems such as cold water being supplied.

The present invention solves the above-mentioned problems in the conventional technology, and even if the temperature of the supplied water in the hot water storage tank 30 has not risen sufficiently, hot water can be obtained whose temperature is higher than the temperature in the hot water storage tank 30, and when hot water is supplied, This increases the amount of heat exchange and improves hot water supply.

The present invention will be described below with reference to FIG. 2. Refrigerant gas generated from a concentrated liquid heated by a burner 17 in a generator 1 passes through a conduit 2 through a solid line portion of a four-way valve 3 and into a pipe. Road 4
The condensation heat enters the second condensation heat heat exchanger 31 composed of. The refrigerant gas that has exchanged heat with the water supply in the double-pipe heat exchanger 31 enters the condensation heat heat exchanger 6 in the hot water storage tank 30, exchanges heat with the surrounding water supply, and condenses to become a high-pressure liquid refrigerant. The liquid refrigerant that entered from the port 6a of the three-way valve 6 enters the lower a of the one-way valve 7 from the port 6C and exits to 7C.
8, cooling is performed by extracting heat of evaporation from the air.

The evaporated low-pressure refrigerant gas passes through the pipe line 1o, passes through the solid line portion of the four-way valve 3, and enters the mixer 12 from the pipe line 11. On the other hand, the drying liquid in which the refrigerant gas has been diluted in the generator 1 passes through the pipe 13 and enters the mixer 12, where it is mixed with the refrigerant gas and enters the absorber 14.

The concentrated liquid that has absorbed the refrigerant gas in the absorber 14 is transferred to the pipe 1.
5 and is sent to the generator 1 by a solution pump 16. The absorbed heat generated in the absorber 14 is transferred to a heat medium (for example, antifreeze, etc.) and becomes hot water, which is transferred to the pipe line 2 by the circulation pump 22.
1, enters the heat exchanger 23 in the hot water storage tank 3o through the second absorption heat heat exchanger 32, and after exchanging heat in the hot water storage tank 30, exits from the port 24a of the three-way valve 24 to the port 24c, It passes through line 26 and enters absorber 14 . When the hot water supply port 29 is opened to supply hot water, city water flows from the water supply pipe 28 to the second condensing heat heat exchanger 31.
The supplied water enters the hot water storage tank 3o, where it exchanges heat with the internal high-temperature, high-pressure refrigerant gas in counterflow through forced circulation, and the heated water enters the hot water storage tank 3o, where it is heated by natural convection by the condensing heat heat exchanger 5 and the heat exchanger 23. Ru. When the hot water discharged from the hot water storage tank 30 passes through the second condensing heat heat exchanger 32, it is further heated by counterflow heat exchange by forced circulation and is supplied from the hot water supply port 29.

When the temperature inside the hot water tank 3o rises sufficiently, it becomes difficult to exchange heat by natural convection between the condensing heat heat exchanger 5 and the heat exchanger 23 in the hot water storage tank 30, so the three-way valve 24 operates and the air-cooled heat is transferred. The heat absorbed by the absorber 14 is radiated by the exchanger 26 and the fan 27. In addition, the three-way valve 7 operates, and the condensation heat is radiated by the air-cooled heat exchanger 19 and fan 2o. However, if the hot water supply port 29 is opened even slightly and hot water is supplied, even if there is almost no heat exchange in the hot water storage tank 30, the hot water is further heated in the second absorption heat heat exchanger 32 and the second condensation heat heat exchanger 31. heated,
City water is also preheated.

During heating, the four-way valve 3 operates to remove the high temperature and heat generated by the generator 1.
The high-pressure refrigerant gas passes through the conduit 2, passes through the broken line portion of the four-way valve 3, enters the heat exchanger 9, and radiates condensed heat through the fan 18 to provide space heating. The heat of condensation is radiated and becomes a high-pressure liquid refrigerant, and the expansion valve 8
The pressure is reduced through the air-cooled heat exchanger 19, and the fan 2o
It absorbs heat from the outside air and evaporates, becoming a low-pressure refrigerant gas.

Thereafter, it passes through the lower part b of the three-way valve T, passes through the mouth line of the three-way valve 6, and enters the mixer 12 through the conduit 11. The circulation of the solution is the same as during cooling. The absorbed heat generated in the absorber 14 heats the water supplied in the hot water storage tank 30 in the heat exchanger 23, as in the case of cooling. In addition, the hot water coming out of the hot water storage tank 30 is further heated by the second absorption heat exchanger 32 and then supplied from the hot water supply port 29 .

In the above embodiment, the dual heat exchanger 3.1.32 is provided outside the hot water storage tank 30, but it may be provided inside the hot water storage tank. Further, the double tube heat exchanger is not limited to this type, and may be of other types.

As described above, in the present invention, a heat exchanger for transmitting condensation heat and a heat exchanger for transmitting absorption heat are provided in the hot water storage tank, and the heat exchanger is provided in at least one of the inlet and output routes of the hot water storage tank. Since the heat exchanger is connected in series with the heat exchanger, even if the temperature of the water supply in the hot water storage tank is not sufficiently raised, the hot water can pass through the heat exchanger connected in series, and the second absorption heat heat exchanger will be activated. Heat exchange is promoted by countercurrent flow due to internal forced circulation, resulting in higher hot water supply than from a hot water source in a hot water storage tank.

Similarly to the hot water supply side, on the water supply side, city water from the water supply pipe passes through the second condensation heat heat exchanger 31, receives condensation heat, raises the temperature, and enters the hot water storage tank. That is, by providing the hot water supply circuit with an instantaneous water boiling element, the absorption heat O condensation heat of the absorption heat pump device can be effectively utilized to provide hot water at a higher temperature.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an example of a conventional absorption type heat pump cooling/heating hot water supply system, and FIG. 2 is a diagram showing an example of an absorption type heat pump cooling/heating hot water supply system according to an embodiment of the present invention. 1. Generator, 6. Heat exchanger for condensing heat, 14. Absorber, 16.
Solution pump, 2381110. Heat exchanger for absorption heat, 2
B , , , , Water supply pipe, 29...Hot water inlet -%
30...Hot water tank 131...2nd
Condensation heat heat exchanger 132...Second absorption heat heat exchanger.

Claims (1)

[Claims] An absorption heat heat exchanger for exchanging heat with the cooling heat medium of the absorber in a hot water storage tank having an inlet for city water and an outlet for hot water; and an absorption heat heat exchanger for exchanging heat with the hot water on the inlet side of the absorption heat heat exchanger. Second to do
An absorption heat pump cooling/heating hot water system that includes at least one of an absorption heat heat exchanger and a second condensation heat heat exchanger that is connected in series with the condensation heat heat exchanger and exchanges heat with water entering the hot water storage tank.