JPH05264120A - Combined refrigerating device - Google Patents

Abstract

PURPOSE:To effectively utilize waste heat in a combined refrigerating device including a vapor compression refrigerator and an absorption refrigerator by connecting a cylinder head cooler provided in a compressor of the former refrigerator to a heater provided in a regenerator of the latter refrigerator through a pipe. CONSTITUTION:In a combined refrigerating device wherein a vapor compression refrigerator V comprising a compressor 1, condenser 2, expansion valve 4 etc., is combined with an absorption refrigerator S comprising a regenerator 8, condenser 9, throttle valve 10, evaporator 11, absorber 12, pump 13, and throttle valve 14, etc., a cylinder head cooler 5 provided in a cylinder head 1a of the compressor 1 is connected to a heater 6 provided in the regenerator 8 through a pipe 16. And waste heat obtained by operating a pump 7 provided in the pipe 16 to circulate cooling medium, thereby cooling the cylinder head 1a, is supplied to the heater 6, where aqueous solution is heated, thereby releasing the waste heat.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combined refrigeration system equipped with a vapor compression refrigerator and an absorption refrigerator.

[0002]

2. Description of the Related Art 1 of a refrigerant circuit of a conventional vapor compression refrigerator
An example is shown in FIG. The high temperature, high pressure refrigerant gas discharged from the compressor 1 enters the condenser 2 and is liquefied by being cooled there. This liquid refrigerant is adiabatically expanded by the expansion valve 3 and then enters the evaporator 4 where it absorbs heat and evaporates and returns to the compressor 1.

[0003]

In the above-mentioned conventional refrigerator, when the compressor 1 is operated at a high compression ratio, the temperature of the gas refrigerant discharged from the compressor increases and the lubricating oil deteriorates. To deal with this, the cylinder head 1a of the compressor 1
Since it was cooled by the cylinder head cooler 5 provided therein, there was a problem that a cold heat source was required.

[0004]

The present invention has been invented to solve the above-mentioned problems, and the gist thereof is to provide a cylinder head cooler provided in a compressor of a vapor compression refrigerator. And a heater provided in a regenerator of the absorption chiller are connected to each other via a pipe so that a cooling medium can circulate between them.

[0005]

In the present invention, because of the above configuration, the cooling medium that has absorbed heat by cooling the cylinder head with the cylinder head cooler is circulated to the heater and heats the aqueous solution to radiate heat.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENT One embodiment of the present invention is shown in FIG. V
Is a vapor compression refrigerator, which includes a compressor 1, a condenser 2, an expansion valve 3, an evaporator 4, and the like. Cylinder head 1a of compressor 1
Is provided with a cylinder head cooler 5.

S is an absorption refrigerator, which is a regenerator 8, a condenser 9, a throttle valve 10, an evaporator 11, an absorber 12, a pump 13, a throttle valve.
It consists of 14 mag. The heater 6 provided in the regenerator 8 is a pipe 16
The cooling medium is circulated between the cylinder head cooler 5 and the heater 6 by operating the pump 7 that is connected to the cylinder head cooler 5 via the pipe and is installed in the pipe 16.

When the vapor compression refrigerator V is operated, the high temperature and high pressure refrigerant discharged from the compressor 1 is condensed and liquefied by the condenser 2, adiabatically expanded by the expansion valve 3 and evaporated and vaporized by the evaporator 4. , Return to compressor 1.

When the absorption refrigerator S is operated, the refrigerant vapor generated by being heated by the heater 6 in the regenerator 8 enters the condenser 9 and is liquefied there. The liquid refrigerant is throttled by the throttle valve 10 and then enters the evaporator 11 where it radiates heat to the cooler 15 to evaporate. This refrigerant vapor enters the absorber 12 where it is absorbed by the aqueous solution and sent to the regenerator 8 by the pump 13. In the regenerator 8, the aqueous solution is heated by the heater 6 to generate refrigerant vapor. The aqueous solution depleted of refrigerant returns to the absorber 12 via the throttle valve 14.

Thus, when the pump 7 is operated to circulate the cooling medium through the cylinder head cooler 5 and the heater 6,
The cooling medium is the cylinder head cooler 5 and the cylinder head 1a.
Is absorbed to enter the heater 6, and the aqueous solution is heated there to radiate heat.

[0011]

According to the present invention, since the cylinder head cooler and the heater are connected to each other through the pipe and the cooling medium is circulated between them, the heat source of the cylinder head cooler and the heat of the heater are heated. You can get the source. Then, the waste heat obtained by cooling the cylinder head can be taken out as cold heat from the evaporator of the absorption refrigerator and used for freezing or cooling.

[Brief description of drawings]

FIG. 1 is a system diagram of a combined refrigeration system according to an embodiment of the present invention.

FIG. 2 is a system diagram of a conventional vapor compression refrigerator.

[Explanation of symbols]

 V Vapor compression refrigerator 1 Compressor 1a Cylinder head 5 Cylinder head cooler S Absorption refrigerator 8 Regenerator 6 Heater 7 Cooling medium transfer pump 16 Cooling medium piping

Claims (1)

[Claims] 1. A cylinder head cooler provided in a compressor of a vapor compression refrigerating machine and a heater provided in a regenerator of an absorption refrigerating machine through a pipe through which a cooling medium can circulate. A combined refrigeration system characterized in that they are connected together.