JPS5981471A - Absorption type heat pump - 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, and more particularly to an absorption heat pump that uses heat radiated from an internal combustion engine body as a heat source for a regenerator.

Conventionally, a cooling jacket portion of the internal combustion engine body cools the internal combustion engine body, and the heated cooling water is guided to a regenerator to serve as a heat source. However, the temperature of the cooling water drawn out from the cooling jacket is about 90°C at most, and the temperature of the liquid heated in the regenerator through heat exchange with the cooling water is about 80 to 85°C. . A single-effect absorption heat pump can be operated at this temperature, but if a dual-effect absorption heat pump is used to increase refrigeration efficiency, an even higher temperature is required and the pump cannot be operated as is. Furthermore, conventionally, it is necessary to provide a heat exchanger within the regenerator in order to exchange heat with the cooling water, and heat exchange loss is unavoidable.

An object of the present invention is to provide an absorption heat pump that can efficiently utilize heat radiated from an internal combustion engine main body at a sufficiently high temperature as a heat source for a regenerator.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

The drawing is a system diagram of one embodiment of the present invention. This absorption heat pump 1 is a dual-effect absorption heat pump, and is composed of an evaporator 2, an absorber 3, a high temperature regenerator 4, a low temperature regenerator 6, a condenser 7, a gas-liquid separator 8, and the like.

According to the invention, the high temperature regenerator 4 is, for example, a generator 15
This is a cooling jacket formed on the main body 16 of the internal combustion engine 5 that drives the engine. That is, in this embodiment, the cooling jacket section, which is conventionally filled with cooling water to store cooling water and cool the main body 16, is used as the high temperature regenerator 4.

Therefore, the absorption liquid that has absorbed the refrigerant in the absorber 3 is transferred to the pump 1.
7 is introduced into the cooling jacket section of the high ffA generator 4 through a conduit 13.

For example, 1
The multiphase flow consisting of refrigerant vapor and absorption liquid heated to about 40° C. is vaporized to the gas-liquid separator 8 via the pipe 14. The refrigerant vapor separated by the gas-liquid separator 8 is guided to the condenser 7 via the heat exchange coil 18 provided in the low-temperature regenerator 6, and the absorption liquid from the gas-liquid separator 8 is passed through the pipe L9. It is introduced into the low temperature regenerator 6 via the low temperature regenerator 6.

Heat is radiated from the absorber 3 and #ki unit 7 to a cooling water circulation circuit 12 including a pump 20 and a cooling tower 11. Evaporator 2
In this case, the refrigerant is dripped through the conduit 22 containing the pump 21, and the prine from the conduit 23 is cooled.

In this way, operation as a dual-effect absorption heat pump is achieved together with the evaporator 2, absorber 3, condenser 7, low-temperature regenerator 6, etc.

Although the above embodiments have described a dual-effect absorption heat pump, the present invention is not limited to dual-effect absorption heat pumps, but can of course be implemented in single-effect absorption heat pumps.

As described above, according to the present invention, the cooling jacket formed in the internal combustion engine body is used as a regenerator, so that the cooling water for disposing of the internal combustion engine body and the liquid in the regenerator are There is no need to exchange heat with the internal combustion engine, and the heat dissipated from the internal combustion engine itself can be used efficiently. This makes it possible to increase the temperature of the liquid in the regenerator to a temperature at which the dual-effect absorption heat pump can be operated. Furthermore, since there is no need to exchange heat between the cooling water for cooling the internal combustion engine and the liquid in the regenerator, a heat exchanger for this purpose is not required.

[Brief explanation of the drawing]

The drawing is a system diagram of one embodiment of the present invention. 1... Absorption heat pump, 2... Evaporator, 3...
・Absorber, 4... High temperature regenerator, 5... Internal combustion engine, 6
...low temperature regenerator, 7...#! Reduction layer 8... Gas-liquid separator agent Patent attorney Kei Nishi

Claims (2)

[Claims] (1) An absorption heat pump characterized in that a cooling jacket formed on the internal combustion engine body serves as a regenerator. (2) The regenerator is a high-temperature regenerator, the fluid derived from the high-temperature regenerator is separated into liquid and gas in a gas-liquid separator, the liquid is led to a low-temperature regenerator, and the gas is regenerated at a low temperature. The absorption heat pump according to claim 1, wherein the absorption heat pump is led to a condenser after exchanging heat with the liquid in the vessel.