JPH02623Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a regenerative condenser for an absorption refrigerator, and in particular,
The present invention relates to a regeneration condenser in which heat of refrigerant generated in a regenerator is recovered in a condenser.

Generally, an absorption refrigerator is constructed by attaching a cylindrical regeneration condensation shell 1 and an evaporation absorption shell 2 to a frame 3, and connecting them airtightly with a refrigerant pipe and an absorption liquid pipe. , a refrigerant cycle that circulates through a condenser, an evaporator, and an absorber, and an absorption liquid cycle that circulates through a regenerator and absorber. Generally, the inside of the regenerated condensation shell 1 is as shown in FIG. It had an arrangement structure of a regenerator 4 and a condenser 5.

However, in the regenerating condensation barrel having such a structure, the upper part of the barrel 1 is also filled with high-temperature gas that has been heated by the heater 6 and separated from the absorption liquid. It has a drawback that the heat given to the reservoir 7 is lost not only from the bottom wall 8 of the container body but also from the upper side wall 9 of the container body. In other words, the regenerating condensing cylinder having the structure shown in FIG. 2 is not suitable as a regenerating condenser for recovering hot water, for example, by recovering the heat of the refrigerant gas in the condenser 5, since the heat loss from the vessel wall is large. It was hot. In addition, in the structure shown in FIG. 2, as the capacity of the absorption refrigerator increases, the flow rate of gas flowing from the regenerator 4 to the condenser 5 increases, which becomes an obstacle to increasing the efficiency of regeneration condensation. They also had the disadvantage of making it difficult to separate the absorbed droplets from the gas stream. In addition, as a conventional technique for reducing the gas flow velocity,
For example, as seen in Japanese Patent Publication No. 15395/1973,
A regeneration condenser has been proposed in which a regenerator is provided at the bottom of the container body, refrigerant gas passages are provided on both sides of the top of the container body, and a condenser is provided between these passages. However, in this regeneration condenser, the cooling gas still at a high temperature from the regenerator is guided to the condenser side while flowing along the inner walls on both sides of the vessel body, so the heat dissipation of the cooling gas from the vessel walls is caused. It has the disadvantage of large loss.

In this project, these shortcomings are eliminated, and the regenerator is placed at the bottom of the container body, and the condenser is placed on the left and right sides at the top of the container body, so that it can be applied to, for example, a large capacity absorption chiller with simultaneous extraction of hot and cold water. forming a refrigerant gas passage from the regenerator to the condenser in the middle of the condenser along the axis of
Further, one of the condensers is a normal cooling water system condenser, and the other condenser is a condenser for recovering heat of the refrigerant gas.

In FIG. 3, reference numeral 10 is placed at the bottom of the regeneration condensation cylinder 1, and a heater 11 is immersed in the absorption liquid reservoir 12, and by heating the absorption liquid, the refrigerant contained in the absorption liquid is gasified and separated. The vessels 13 and 13' are condensers arranged in the upper half of the regenerated condensation shell 1 and have heat exchangers 14 and 14' parallel to the axis of the vessel. The other condenser 13' is a cooling water system condenser having a heat exchanger 14 through which cooling water is passed, and the other condenser 13' is a heat recovery condenser having a heat exchanger 14' through which hot water is passed, for example. It acts as a condenser. Reference numerals 15 and 15' refer to a refrigerant reservoir for storing the refrigerant liquid condensed and liquefied in the condenser and supplying the same to an evaporator (not shown); 16 an eliminator 17 for separating absorbed droplets contained in the gas flow generated from the regenerator 10; The refrigerant gas is transferred to the condenser 13,1.
3' is a refrigerant passage arranged between the condensers 13 and 13'.

Therefore, the absorption liquid is heated by the heater 11 of the regenerator and refrigerant gas is generated because the absorption liquid boils and
Since the refrigerant gas in the liquid vaporizes and separates from the absorption liquid, if the regenerator is arranged so that a liquid reservoir is formed at the entire bottom of the vessel body as in this proposal, the liquid column in the regenerator will be shallower. In addition to making it easier to boil, it is also possible to increase the regeneration efficiency by widening the vaporization area. Further, the refrigerant gas vaporized in the regenerator 10 passes through the eliminator 17 and the refrigerant passage 16 to the condenser 1.
3 and 13', the vapor flow rate is halved, making it possible to efficiently separate and condense the refrigerant.In addition, the cooling gas flows between the tube groups of the heat exchangers 14 and 14', reducing its size. As a result of cooling the parts while condensing,
By reducing the high-temperature area around the inner wall of the upper half of the regeneration condenser 1, it is possible to reduce heat radiation, that is, heat loss, from the wall of the upper half of the vessel body 1, and the heat recovery condenser 13' is reduced accordingly. The amount of heat recovered is increased, and hot water, for example, can be taken out from the condenser with high thermal efficiency.

Moreover, the regeneration condenser of the present invention has heat exchangers 14, 1
It is suitable as a base for a large-sized absorption refrigerator because a plurality of water heat exchangers composing the refrigeration unit 4' can be independently housed, and a heat recovery condenser 13' can be installed without causing any change in appearance. . As described above, this proposal has the effect of efficiently separating and condensing the refrigerant, and the effect of reducing heat loss from the vessel wall, that is, the effect of efficiently recovering the heat of the refrigerant in the heat recovery condenser. It is particularly useful as a regenerative condenser for high-capacity, high-efficiency absorption refrigerators.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing an example of an absorption refrigerator, Figure 2 is a perspective view showing an example of an absorption refrigerator.
The figure is a schematic cross-sectional view showing the internal structure of a general regenerating condensing cylinder, and FIG. 3 is a corresponding cross-sectional view showing the internal structure of the regenerating condensing cylinder according to the present invention. 1... Regeneration condensation cylinder, 10... Regenerator, 13...
Condenser, 13'... Condenser for heat recovery, 16... Refrigerant passage.

Claims (1)

[Scope of utility model registration request] a regenerator that heats and separates refrigerant gas from the absorption liquid;
A cylindrical container housing a built-in condenser that cools and condenses the separated refrigerant gas to form a liquid refrigerant, and a heater for heating the absorption liquid and an absorption liquid reservoir at the bottom of the container, A condenser is disposed in the upper half of the vessel, each parallel to the axis of the vessel, and separates the absorbed droplets from the gas stream flowing from the regenerator to the condenser, and separates the refrigerant gas. An absorption device characterized in that a refrigerant passage with an eliminator leading to the condenser is disposed in the middle of the condenser, and one of the condensers divided by the refrigerant passage is used as a condenser for heat recovery. Regenerative condenser for refrigerators.