JPH0735463A - Absorption type refrigerator - Google Patents

Abstract

PURPOSE:To provide an absorption type refrigerator wherein a raising of an efficiency of an absorption type cooling system can be achieved by a rapid heat discharging from a condenser, besides, a bedewing at an opening edge of the refrigerator can be prevented without using an electric heater, and an energy saving can be achieved in an absorption type refrigerator. CONSTITUTION:A generator 12 generating evaporation of an liquid cooling medium, a rectifying device 13 which is in communication with an upper side of the generator 12, a condenser 21 positioned at an under section of the rectifying device 13, a generator, an absorber 16 absorbing the liquid medium gas at an under section of the generator, a receiver 17 storing the liquid medium at an under section of the absorber 16, an absorption type cooling system 19 and a heat transferring device 31 having a piper which includes a heating medium are provided. A heat receiving part 32 of a heat transferring device 31 is arranged in a condenser 21 of the absorption type cooling system to transfer the heat, and a heat discharging section 33 of the heat transferring device 31 is arranged at an opening edge 10 of the refrigerator body 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorption refrigerator in which the inside of a refrigerator is cooled by an absorption cooling system.

[0002]

2. Description of the Related Art Conventionally, an absorption type refrigerator is, for example, the actual Kaisho 62.
There is one disclosed in Japanese Patent Publication No. 72574.

This conventional example will be described below with reference to FIGS. 5 and 6. FIG. 5 is a vertical sectional view of a conventional absorption refrigerator. FIG. 6 is a schematic view of a cooling system of the absorption refrigerator.

In the figure, reference numeral 1 is a refrigerator main body, 2 is a heat-insulating box body having a heat-insulating material 3 filled therein, and the inside of the storage is heat-insulating material 3
It is divided into upper and lower parts by a partition wall 4 having a freezing chamber 5 above and a refrigerating chamber 6 below. 7 is a freezer compartment door and 8 is a refrigerating compartment door. 9 is the refrigerator body 1
It is an electric heater arranged at the opening edge 10 of the. An absorption cooling system 11 is attached to the back surface of the refrigerator body 1.

The absorption cooling system 11 includes a generator 12,
The rectifier 13, the condenser 14, the evaporator 15, the absorber 16, the liquid receiver 17 and the like are configured, and, for example, ammonia is used as a refrigerant, water is used as an absorbent, and hydrogen gas is used as a diffusing agent. The circulation of the refrigerant in the cooling system 11 is performed by gravity. In this case, since the refrigerant flows by gravity between the respective devices forming the absorption cooling system 11, the high and low regions of the arrangement position of each device or the installation inclination state are severely restricted. .

[0006] These devices are usually the refrigerator body 1
In particular, the condenser 14 is located above the evaporator 15 in order to liquefy the refrigerant and flow the liquefied refrigerant into the evaporator 15. A heat radiation fin 18 is attached to the condenser 14 to improve heat radiation.

Further, the electric heater 9 provided at the opening edge 10 of the refrigerator body 1 prevents the opening edge 10 from being cooled by heat conduction in the refrigerator to prevent dew condensation.

[0008]

However, in the configuration as described above, the condenser 14 is arranged at the position where the generator 1 is arranged.
Since it is above the heat generating part such as 2 and in the rear part of the refrigerator body 1 where it is difficult to take a heat radiation space,
Even if the heat radiation fins 18 are attached, there is a problem that the heat radiation performance is poor and the efficiency of the absorption cooling system is low.

In addition, an electric heater is used to prevent dew condensation on the opening edge 10.
The use of data 9 is against the trend of energy saving in recent years.

Therefore, it is an object of the present invention to quickly dissipate heat from the condenser, improve the efficiency of the absorption cooling system, and use an electric heater for dew condensation on the opening edge. It is an object of the present invention to provide an absorption type refrigerator that can be prevented and can achieve energy saving.

[0011]

To achieve this object, an absorption refrigerator according to the present invention comprises a heat transfer device having a heat medium sealed in a pipe, and the heat receiving part of the heat transfer device is a condenser. And a heat radiating portion of the heat exchanger is disposed at the opening edge of the refrigerator body.

[0012]

In the absorption refrigerator according to the present invention, the heat receiving portion of the heat transfer device is disposed in the condenser in a heat transfer manner, and the heat radiating portion of the heat transfer device is disposed at the opening edge of the refrigerator body. , Even if the condenser of the absorption cooling system is placed in a position where heat dissipation efficiency is poor, the heat from the condenser is transferred to the opening edge of the refrigerator body with good heat dissipation efficiency through the heat exchanger. . As a result, heat is quickly dissipated from the condenser, the heat dissipation efficiency is improved, and dew condensation on the opening edge of the refrigerator body can be prevented.

[0013]

Embodiments of the absorption refrigerator according to the present invention will be described below with reference to the drawings. It should be noted that the same configurations as those of the conventional one are denoted by the same reference numerals and detailed description thereof will be omitted.

FIG. 1 is a rear perspective view of an absorption refrigerator according to an embodiment of the present invention. FIG. 2 is a perspective view of the main part of FIG. FIG. 3 is a vertical sectional view of the absorption refrigerator according to the embodiment. FIG. 4 is a schematic diagram of a cooling system of the absorption refrigerator according to the embodiment.

Hydrogen gas and ammonia water are enclosed in the absorption cooling system 19, and mainly the generator 12,
Heating heater 20 for heating generator 12, generator 1
2. A rectifier 13 communicating with the upper side, a condenser 21 below the rectifier 13, an evaporator 15 below it, an absorber 16 below it,
The receiver 17 is provided.

Further, a liquid heat exchanger 23 having an inner pipe 22 opened at the lower part of the liquid receiver 17, a dilute solution pipe 25 communicating the outer pipe 24 side of the liquid heat exchanger 23 with the upper part of the absorber 16, and a liquid receiver. 17, a mixed gas conduit 26 that opens at the top and serves as the outer tube of the evaporator 15,
A pressure equalizing pipe 27 that communicates the conduit 26 with the absorber 16, a hydrogen transport pipe 28 that extends above the absorber 16 and serves as an inner pipe of the evaporator 15 and opens at its upper end, a condenser 21 outlet and an evaporator. It consists of a liquid pipe 29 that communicates the upper end of 15.

That is, the generator 12, the evaporator 15 and the liquid heat exchanger 23 are double tubes, and the generator 12 is a heat insulating material 30.
Is covered by.

Next, the operation will be described. A concentrated ammonia solution is stored in the liquid receiver 17 and the inner tube 22, and this is heated by the heater 20 in the generator 12 and boiled to generate ammonia gas. Ammonia dilute solution that has become thin due to the release of ammonia gas increases, and the dilute solution becomes the inner tube 2
2 is sent to the upper part of the absorber 16 through the dilute solution pipe 25.

On the other hand, the ammonia gas generated by heating by the heater 20 in the generator 12 reaches a high temperature in the rectifier 11, where it is cooled to condense and separate the water contained therein, and then to the generator 12. It is returned and only ammonia gas is condensed by the condenser 2.
It reaches 1 and is cooled and liquefied.

The liquefied ammonia flows down the liquid pipe 29 and enters the evaporator 15, where it is vaporized and diffused in the hydrogen gas to produce a cooling effect. The upper part of the evaporator 15 is connected to the freezer cooler 1
5A and the lower part are placed in the freezer compartment 5 and the refrigerator compartment 6 as the refrigerator compartment cooler 15B to cool them. The evaporated ammonia gas mixes with hydrogen gas and becomes heavy in specific gravity, flows down to the liquid receiver 17 through the conduit 26, passes above the concentrated solution surface, and passes through the absorber 14
Flows in from the bottom to rise.

Since the ammonia dilute solution is flowing down from above in the absorber 16, only the ammonia in the mixed gas is absorbed by this, and only hydrogen gas is produced, which rises in the hydrogen transport pipe 28 and reaches the upper portion of the evaporator 15. .

By repeating the above, the freezing compartment 5 and the refrigerating compartment 6 are cooled. Here, 31 is a heat pipe, which is a heat exchanger, for example, which is configured by enclosing a heat refrigerant in a pipe having a closed loop shape, and has a heat receiving portion 32 and a heat radiating portion 33. . A heat receiving portion 32 having a substantially linear shape is penetrated through the inside of the condenser 21 having the large-diameter cylindrical shape along the axis of the condenser 21 so as to transfer heat to the condenser 21. Further, the heat dissipation portion 33 is arranged at the opening edge 10 of the refrigerator body 1.

According to the above structure, since the heat receiving portion 32 of the heat transfer device 31 is disposed in a heat transfer manner in the condenser 21, the liquefaction that occurs when the ammonia gas is liquefied in the condenser 21. The heat is transferred from the heat receiving section 32 to the heat medium in the heat transfer device 31. In addition, the heat dissipating portion 33 of the heat transfer device 31 is connected to the refrigerator body 1
Since it is arranged along the opening edge 10 of the refrigerator main body 1, the liquefaction heat is promptly passed through the heat medium in the heat exchanger 32.
Is transmitted to the opening edge 10. Since the opening edge 10 has a large heat dissipation area and is relatively low in temperature due to heat conduction from the inside of the refrigerator, the heat of liquefaction is quickly dissipated to the outside through the opening edge 10 of the refrigerator body 1.

Therefore, the heat dissipation efficiency of the condenser 21 can be improved, and thus the operation efficiency of the absorption cooling system can be improved. Further, dew condensation on the edge of the opening can be prevented without using an electric heater, and energy saving can be achieved.

In the above embodiment, the heat transfer means is a heat transfer means.
Although a top pipe is used, a thermosiphon may be used instead.

[0026]

As described above, the present invention is provided with a heat transfer device in which a heat medium is enclosed in a pipe, and the heat receiving portion of this heat transfer device is arranged in a heat transfer manner in a condenser. Since the heat radiating portion of the heat transfer device is arranged at the opening edge of the refrigerator body, heat can be quickly radiated from the condenser, and the efficiency of the absorption cooling system can be improved. The excellent effect of preventing dew condensation on the opening edge of the refrigerator body is achieved.

[Brief description of drawings]

FIG. 1 is a perspective view of a rear view of an embodiment of an absorption refrigerator according to the present invention.

FIG. 2 is a perspective view of a main part of FIG.

FIG. 3 is a vertical sectional view of the absorption refrigerator according to the embodiment.

FIG. 4 is a schematic view of a cooling system for an absorption refrigerator according to the same embodiment.

FIG. 5 is a vertical sectional view of a conventional absorption refrigerator.

FIG. 6 is a schematic diagram of a cooling system of the absorption refrigerator.

[Explanation of symbols]

 1 Refrigerator main body 10 Opening edge 12 Generator 13 Fractionator 15 Evaporator 16 Absorber 17 Liquid receiver 19 Absorption type cooling system 20 Heating heater 21 Condenser 31 Heat transfer device 32 Heat receiving part 33 Radiating part

Claims (1)

[Claims] 1. A generator for evaporating a liquid refrigerant, a rectifier communicating with the upper side of the generator, a condenser located under the rectifier, an evaporator, and a refrigerant gas in the lower part of the evaporator. An absorber that absorbs, a receiver that stores liquid refrigerant in the lower part of the absorber, a heating heater that heats the generator, and a heat exchanger that encloses a heat medium in the pipe, An absorption type refrigerator characterized in that the heat receiving part of the heat transfer device is disposed in a heat transfer manner in the condenser and the heat dissipation part of the heat transfer device is disposed at an opening edge of the refrigerator body.