JPS6119408Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved structure of a so-called diffusion absorption type cooling device that performs cooling by natural circulation using an ammonia solution or the like as a refrigerant and hydrogen gas or the like as an inert gas.

In this type of diffusion absorption type cooling device, ammonia solution or the like is used as a refrigerant, and ammonia gas is generated by heating the ammonia solution in a generator with an electric heater device, gas burner, oil burner, etc. The liquefied ammonia is liquefied in a condenser and then introduced into an evaporator where it is evaporated in an inert gas such as hydrogen gas and cooled by the endothermic action that occurs at that time. This circulation of the ammonia solution is dependent on gravity and is caused by the water level difference between the concentrated ammonia solution and the dilute solution in the cooling cycle. Therefore, increasing the cooling capacity leads to an increase in the vertical dimension of the cooling device itself.
Therefore, in cases where the vertical dimension of the refrigerator body cannot be increased, such as a so-called chest-type refrigerator with an upward opening, there is inevitably a drawback that the capacity of the cooling device cannot be increased.

The present invention has been developed in view of the above-mentioned drawbacks, and embodiments thereof will be described below with reference to the drawings. Reference numeral 1 denotes, for example, a so-called chest-type refrigerator main body that opens upward, and a first cooling cycle 2 and a second cooling cycle 3 as a diffusion-absorption cooling device are provided on the back wall thereof, for example. The first cooling cycle 2 is the refrigerator main body 1
It consists of a generator 4, a rectifier 5, a condenser 6, an absorber 7, a liquid receiver 8, a liquid heat exchanger 9, and an evaporator 11 arranged on the inside 10 side. Second
The cooling cycle 3 is composed of a generator 12, a rectifier 13, a condenser 14, an absorber 15, a liquid receiver 16, a liquid heat exchanger 17, and an evaporator 18 disposed on the inside 10 side. ing. First cooling cycle 2 and second
The cooling cycle 3 is provided approximately laterally symmetrically with the respective generators 4 and 12 located close to or in close contact with each other at approximately the center of the back wall. Reference numeral 19 denotes an electric heater device as a heating means, which is provided in close proximity to the generators 4 and 12 for heat exchange. Reference numeral 20 denotes a smoke pipe for transmitting heat from a gas burner or oil burner (not shown), and like the electric heater device 19, it is disposed on a partner of the generators 4 and 12 for heat exchange. This smoke pipe 20 is used as a generator 4 instead of the electric heater device 19 when used in an area where there is no power source for the electric heater device 19.
and 12 is heated. These heating means, together with the generators 4 and 12, are surrounded by a heat insulating material 21, so that most of the heat generated from the heating means is consumed in heating the generators 4 and 12. Become. As a result, the refrigerant in both cooling cycles 2 and 3 is circulated, and the interior 10 of the refrigerator is cooled more powerfully by the evaporators 11 and 18 than in the case of only one evaporator.

By virtue of the configuration of the present invention as described above, even under conditions where the vertical dimension of the cooling cycle is restricted, the cooling capacity can be improved without increasing the vertical dimension. Furthermore, the existing cooling cycle can be used without any need for new development. Furthermore, heating means such as an electric heater device, a gas burner, or an oil burner can be used for a single cooling cycle, which is economical, and since heating is concentrated in one location, there is little heat loss. Furthermore, by using a single heating means, temperature control becomes simple even when using a plurality of cooling cycles, which has great practical effects.

[Brief explanation of the drawing]

Each figure shows an embodiment of the present invention, and FIG. 1 is a rear view of the refrigerator, and FIG. 2 is a sectional view taken along the line A-A' in FIG. 1. 2... First cooling cycle, 3... Second cooling cycle, 4, 12... Generator, 19... Electric heater device, 20... Smoke pipe.

Claims (1)

[Scope of utility model registration request] A diffusion absorption cooling cycle consisting of two systems of diffusion absorption cooling cycles in which the generators constituting the cooling cycle are arranged close to each other or closely in parallel, and a heating means arranged thermally conductively on the other side of both of the generators. type cooling device.