JPH0370948A - Absorption type refrigerator - Google Patents

Abstract

PURPOSE:To improve the cooling efficiency of a cooled system and hence make compact the size of a refrigerating unit by spraying water over the fins of a condensation pipe and absorption pipe and performing direct cooling operation, using vaporization latent heat of this water. CONSTITUTION:Refrigerant vapor enters a condensation pipeline 1 which serves as a condenser from its inlet 1' and flows downward while it is being condensed and reaches a vaporizer. The refrigerant vapor from the vaporizer enters a suction pipe 2, which serves as a absorber, laid out in parallel to the condensation pipe 1 from the inlet 2' of the absorber and gets mixed (absorbs) with the enriched suction solution which flows from an inlet 3 of enriched solution and flows downward and returns to a generator. Both the condensation pipe 1 and the suction pipe 2 are cooled with the latent heat of vaporization of water sprayed over the fins 4 from a discharge nozzle 5, thereby exerting its performance so that the water which flows from the fins 4 may be collected on a saucer 6. The water is forcibly circulated by a circulation pump so that it may reach the discharge nozzle 5. The fins 9 produce an air flow from the sides, thereby promoting the evaporation of water.

Description

[Detailed Description of the Invention] [Industrial Field of Application J] The present invention is directed to absorption type cooling 7! I! The present invention relates to an apparatus, and specifically relates to an absorption refrigerating apparatus that uses an air cooling method to cool the condensation heat and absorption heat of refrigerant vapor.

[Prior Art] In the conventional absorption refrigerating system, the condenser and absorber are cooled using cooling water, and the condenser (absorber) is cooled using a forced draft fan a as shown in Fig. 4. There are two ways to cool the container) b.

[Problems with the Prior Art] In the above conventional example, the water cooling system has the disadvantage that the condenser and absorber are complicated, and the air cooling system requires a large number and size of fins in order to increase its effectiveness. The disadvantage is that the overall shape becomes very large.

An object of the present invention is to improve the cooling effect in an air-cooled system and to make the device as compact as possible.

[Means for Solving the Problems] As a means for achieving the above object, the present invention proposes an absorption refrigerating apparatus having the following configuration.

(1) An absorption type refrigerating system in which fins are attached around a refrigerant condensing pipe, water is sprayed onto the fins, and refrigerant vapor is condensed using the latent heat of vaporization of the sprayed water.

(2) An absorption type refrigeration system that is constructed so that fins are attached around the absorption tube and water is sprayed onto the fins, thereby utilizing the latent heat of vaporization of the sprayed water to remove the absorbed heat that accompanies the absorption action. Device.

(3) The refrigerant condensing pipe and the absorption pipe are configured vertically, and when the fins of these pipes are attached horizontally and forced ventilation is performed, the leeward side of the fin is bent upward to form a water stop edge. Absorption type refrigerating apparatus described in (1) and (2).

(4) The absorption type refrigerating apparatus according to (1) and (2) above, wherein the cold tofu condensation pipe and the absorption pipe are configured vertically, fins are attached to these pipes in a horizontal direction, and each fin is provided with a flow hole.

(5) A refrigerant condensing pipe and an absorption pipe are arranged vertically in a W shape, a common fin or a single fin is attached to these pipes, a water jet nozzle is provided facing the fin, and a water receiving tray is placed below the fin. This absorption refrigeration system consists of a water pipe that connects the receiving tray and the jet nozzle, and a circulation pump installed in the middle of the water pipe.

(6) The absorption refrigerating apparatus described in (1), (2), and (5) above, wherein a fan for forced ventilation is attached facing the fins.

[Operation] In the above-mentioned refrigeration apparatus, refrigerant vapor is generated by heating the absorption liquid (lithium bromide solution) in the generator. This refrigerant vapor then reaches the condensing pipe, passes through fins attached to the condensing pipe, is cooled by the latent heat of vaporization of water spread over the fins, becomes a refrigerant liquid, and reaches the evaporator. Here, the refrigerant liquid freezes and evaporates, gives cold heat to the gas or liquid by latent heat of vaporization, and reaches the absorption tube, where it mixes with the ei absorption liquid and releases absorption heat. This absorption heat is transferred to the fins attached to the absorption tube. The heat is taken away by the latent heat of vaporization of the water sprayed on these fins. In this way,
The dilute solution exiting the absorption tube returns to the generator and is reheated to repeat the above process.

Incidentally, air is forcibly blown by a fan to the fins of the condensing tube and absorption tube to promote evaporation of the sprayed water. It is desirable that the amount of water sprayed be such that it flows down in stages and reaches the lowest fin; too much water will reduce the effectiveness by half.

[Embodiment] FIG. 1 shows an embodiment of the present invention, and this embodiment has a configuration in which a conventional condenser and absorber are integrated.

Reference numeral 1 designates a condensing tube as a condenser, and refrigerant vapor enters the condensing tube 1 from its inlet 1' and flows downward while being condensed to reach the evaporator.

Reference numeral 2 denotes an absorption tube as an absorber which is arranged in parallel with the condensing tube 1, and the refrigerant vapor from the evaporator (not shown) enters from this inlet 2', and the concentrated absorption liquid enters from the concentrated solution port 3. It mixes with (absorbs) and flows downward to return to the generator.

4 is a fin commonly attached to the condensing pipe 1 and the absorption pipe 2; 5 is a water jet nozzle facing the top of the fin 4; 6 is a water receiving tray disposed below the fin 4; A water pipe connecting the saucer 6 and the jet nozzle 5, 8 a circulation pump attached to the water pipe 7, 9 a fan for forced ventilation, 1
0 is an automatic water supply device.

In the above embodiment, the condensing pipe 1 and the absorption pipe 2 are cooled by the latent heat of vaporization of the water sprayed from the jet nozzle 5 onto the fins 4 to perform their functions, and the water flowing down the fins 4 is temporarily collected in the receiving tray 6. It reaches the jet nozzle 5 by forced circulation with the ring pump 8. The fan 9 creates a flow of air from the sides of the fins 4 to promote water evaporation.

In addition, in order to prevent the water sprayed by the wind force of the fan 9 from flowing down to the opposite side, the fin 4 may have its end bent upward to form a water stopper edge 4a, so that the water flows downward.

Further, in order to allow water to flow down evenly to the lower fins 4 and to enhance the effect of latent heat of vaporization, it is preferable to provide the fins 4 with flow holes 4b as appropriate.

[Effects of the present invention] As described above, the present invention sprays water on the fins of the condensing tube and the absorption tube and performs direct cooling using the latent heat of vaporization of this water, so the following effects can be achieved. You can expect it.

a. The air cooling effect is enhanced, and as a result, the number of fins can be reduced and the size of the condenser and absorber can be reduced to about 1/2.

b.Water is economical because it is recycled.

C8 The effect of a above also reduces the size of the entire refrigeration system.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a refrigeration system according to the present invention, FIG. l... Condensing pipe 2... Absorption pipe 3
... Concentrated solution inlet 4 ... Fin 5 ...
・ Spout nozzle 6 ... saucer 7 ...
Water pipe 8... Circulation pump 9...
Fan 10-... Automatic water supply device tiI4
Figure 2 Figure 3

Claims (1)

[Claims] (1) Absorption refrigeration with a configuration in which fins are attached around the refrigerant condensing pipe, water is sprinkled on the fins, and the latent heat of vaporization of the sprayed water is used to condense the refrigerant vapor. Device. (2) An absorption type refrigeration system that is configured to attach fins around an absorption tube and spray water onto the fins so that the latent heat of vaporization of the sprayed water is used to remove the absorbed heat associated with the absorption action. Device. (3) A claim in which a refrigerant condensing pipe and an absorption pipe are configured vertically, fins are attached to these pipes in a horizontal direction, and when forced ventilation is performed, the leeward side of the fin is bent upward to form a water stop edge. The absorption refrigerating device according to items (1) and (2). (4) The absorption refrigerating apparatus according to claims (1) and (2), wherein the refrigerant condensing pipe and the absorption pipe are configured vertically, fins are attached to these pipes in a horizontal direction, and each fin is provided with a flow hole. . (5) configuring the refrigerant condensing pipe and absorption pipe vertically,
A common fin or a single fin is attached to these pipes, and a water jet nozzle is provided facing the fin, a water tray is provided below the fin, and a water pipe is connected between this tray and the jet nozzle. Absorption refrigeration equipment consists of a circulation pump installed in the middle of the refrigeration system. (6) The absorption refrigerating apparatus according to claims (1), (2) and (5), further comprising a forced ventilation fan attached facing the fins.