JP2957905B2 - High temperature regenerator of absorption refrigerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-temperature regenerator in an absorption refrigerator, and more particularly, to a high-temperature regenerator having a liquid level detection box on a side wall.

[0002]

2. Description of the Related Art As a high-temperature regenerator of this type, a high-temperature regenerator 1 having a structure shown in FIG. 3 proposed in, for example, Japanese Patent Publication No. 60-22255 has been known.

That is, the high temperature regenerator 1 is provided with a liquid level detection box 12 on the side wall through which the inside of the high temperature regenerator 11 and the solution 18 and the refrigerant vapor 19 can enter and exit. By detecting the liquid level of the solution 18 in the liquid level detecting box 12 by the liquid level detecting means 20 comprising
1 to determine the liquid level of the solution 18 in the
By controlling the flow rate of the dilute solution sent from the absorber 5 to the high-temperature regenerator 1 and the amount of heating in the high-temperature regenerator 1, the amount of refrigerant evaporated is controlled, and the refrigerating capacity of the refrigerator is controlled.

[0004] In the figure, 2 is a low-temperature regenerator, 3 is a condenser,
4 is an evaporator, 6 is a low-temperature heat exchanger, 7 is a high-temperature heat exchanger, 9
Are refrigerant pumps, each of which is connected to a pipe as shown in the figure to form a refrigeration cycle. Reference numeral 13 denotes a solution communication part, 17 denotes a vapor communication part, and 21 denotes a combustion chamber.

[0005]

However, according to the above-mentioned prior art, the cross-sectional area of the communicating portion through which the solution enters and exits is reduced so that the boiling of the solution in the main body of the high-temperature regenerator does not reach the liquid level detection box. Since the liquid level is accurately detected, the liquid level itself can be detected with high accuracy.
It is difficult for the liquid level in the liquid level detection box to quickly follow the liquid level in the high-temperature regenerator body and move up and down. Therefore, the amount of refrigerant vapor generated cannot be accurately controlled, and the absorption refrigerator There is a problem that the controllability of
The solution of this point has been an issue.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the prior art, and has a side wall provided with a liquid level detection box through which a solution and a refrigerant vapor can enter and exit from the inside of a main body. For low temperature regenerator, condenser, evaporator,
In high-temperature regenerators of absorption refrigerators that constitute a refrigeration cycle by connecting piping with absorbers and heat exchangers,

[0007] A high temperature regeneration apparatus according to the first configuration, wherein a communicating portion through which the solution enters and exits between the inside of the main body and the liquid level detection box is formed by a taper-shaped reducer extending substantially horizontally into the liquid level detection box. Vessels,

A communicating portion between the inside of the main body and the liquid level detecting box, through which the solution enters and exits, is formed by an elbow that extends substantially horizontally into the liquid level detecting box, then bends downward and opens downward. A high temperature regenerator of a second configuration,

In the high-temperature regenerator of the first or second configuration, the ratio of the cross-sectional area of the opening of the minimum diameter portion of the communication portion to the plane area of the liquid level detection box higher than the solution communication portion is 0.2 to 0.2.
0.5 or 0.2 to 1.0 .
And a high-temperature regenerator having the configuration of ( 4 ) to solve the above-mentioned problem of the prior art.

[0010]

[Function] A high temperature regenerator main body and a liquid level detection box are provided through a reducer installed substantially horizontally in the liquid level detection box or an elbow which is bent substantially downward after extending substantially horizontally and opened downward. When the solution is boiled to evaporate and separate the refrigerant in the directly heated high-temperature regenerator body, the solution does not boil in the liquid level detection box. The liquid level of the solution is accurately measured by an appropriate means such as an electrode or a float switch installed in the box.

Further, since the opening cross-sectional area of the communicating portion through which the solution enters and exits is larger than in the past, the ability to follow the fluctuation in the liquid level of the solution in the high-temperature regenerator main body is high, and the controllability is improved.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. To facilitate understanding, portions having the same functions as those of the conventional device shown in FIG. 3 are denoted by the same reference numerals. In addition, FIG. 3 which can easily grasp the entire image of the absorption refrigerator is also used for the description of the present invention.

FIG. 1 shows a main part of a first embodiment of the present invention. In this case, a high-temperature regenerator 1 has a solution communicating portion 13 through which a solution enters and exits. And a tapered reducer 15 extending substantially horizontally from the opening into the liquid level detection box 12.
The steam communication portion 17 is formed by the opening itself formed in the side wall of the high temperature regenerator main body 11.

The minimum diameter portion of the solution communication portion 13, that is, the opening cross-sectional area of the end of the reducer 15 on the side of the liquid level detection box 12 is equal to the inner flat area of the liquid level detection box 12 above the installation portion of the reducer 15. For example, it is configured to be approximately 50%.

By installing the liquid level detection box 12 on the side wall of the high temperature regenerator main body 11 as described above, the solution 18 in the high temperature regenerator main body 11 and the solution 18 in the liquid level detection box 12 are almost the same. Although the temperature becomes about the same, the gas or oil is burned in the combustion chamber 21 and the solution 1 of the high temperature regenerator main body 11 is burned.
The solution 18 in the liquid level detection box 12 hardly foams even when the refrigerant 8 is heated and boiled and the refrigerant is evaporated and separated, and the absorption liquid pump 8 is driven to drive the diluted liquid from the absorber 5 to the high temperature regenerator 1. Even if the liquid level of the solution 18 of the high-temperature regenerator main body 11 is increased and decreased, the solution 1
The liquid level 8 moves up and down easily following this.

For this reason, electrodes, float switches, etc.
As such, the level of the liquid level detection box 12 and thus the level of the liquid level 18 in the main body 11 of the high-temperature regenerator can be accurately detected by using a well-known liquid level detecting means.

Therefore, it is possible to precisely control the inflow of the rare liquid supplied from the absorber 5 to the high-temperature regenerator 1 and the separation of the refrigerant vapor performed by controlling the heat generation of the combustion chamber 21.
This is convenient for controlling the refrigeration capacity of the absorption refrigerator.

The opening cross-sectional area of the smallest diameter portion of the solution communicating portion 13 with respect to the inner flat area above the position of the reducer 15 of the liquid level detecting box 12 is in the range of 20 to 50%. If the opening cross-sectional area is 20% or less, the liquid level in the liquid level detection box 12 will not follow up and down of the liquid level of the solution 18 in the high-temperature regenerator main body 11, and controllability will be impaired. On the other hand, if the opening cross-sectional area is larger than 50%, the effect of the boiling of the solution in the high-temperature regenerator main body 11 reaches the liquid level detection box 12 and the liquid level of the solution 18 may not be detected accurately. Not preferred.

FIG. 2 shows a main part of a second embodiment of the present invention. In this case, the high-temperature regenerator 1 has a structure in which the solution communicating portion 13 through which the solution 18 enters and exits is replaced by the reducer 15. It is formed by an elbow 16 that extends substantially horizontally and then bends downward and opens downward.

In this case, the opening cross-sectional area of the solution communication part 13 is more affected by the boiling of the solution in the high-temperature regenerator main body 11 than the case where the solution communication part 13 is formed by the reducer 15. Because it is difficult, the liquid level detection box 12 is configured to have, for example, 90% of the inner flat area higher than the installation portion of the elbow 16.

Therefore, similarly to the high temperature regenerator 1 of the first embodiment, the high temperature regenerator 1 of the second embodiment is not easily affected by the boiling of the solution in the high temperature regenerator body 11. Then, the solution 18 in the liquid level detection box 12 moves up and down well following the vertical movement of the liquid level of the solution 18 in the high temperature regenerator main body 11, and is equivalent to the high temperature regenerator 1 of the first embodiment. It has a function and effect.

The elbow 16 of the liquid level detection box 12
Solution communication part 1 for inner flat area above the installation part
In this case, the opening cross-sectional area of the minimum diameter portion is 20 to 100.
% Range. When the opening cross-sectional area becomes 100% or more (100% by expanding the lower side of the liquid level detection box 12).
%), And the effect of the boiling of the solution in the high temperature regenerator main body 11 is reduced by the reducer 15 which opens downward in the liquid level detection box 12 and opens in the horizontal direction. Even if the elbow 16 which is difficult to use is used, the effect of the boiling of the solution in the high temperature regenerator main body 11 reaches the liquid level detection box 12 and the liquid level of the solution 18 may not be detected with high accuracy, which is not preferable.

Since the present invention is not limited to the above embodiment, various modifications can be made without departing from the spirit of the appended claims.

[0024]

As described above, according to the present invention, the low-temperature regenerator / condenser / evaporator is provided with a liquid level detection box on the side wall through which the solution and the refrigerant vapor can flow in and out of the main body.・ In high temperature regenerators of absorption refrigerators, which are connected to pipes with absorbers and heat exchangers to form a refrigeration cycle,

A high-temperature regenerator formed by a reducer extending substantially horizontally into the liquid level detection box and having a communicating portion through which the solution enters and exits between the inside of the main body and the liquid level detection box,

A communication portion between the inside of the main body and the liquid level detection box, through which the solution enters and exits, is formed by an elbow that extends substantially horizontally into the liquid level detection box and then bends downward and opens downward. High temperature regenerator

In the high-temperature regenerator having the above-described structure, the ratio of the cross-sectional area of the opening of the smallest diameter portion of the communication portion to the plane area of the liquid level detection box higher than the solution communication portion is 0.2 to 0.5 or 0.5 or 0.5.
Since it is a high-temperature regenerator set to be 0.2 to 1.0,

Even if the solution is boiled to evaporate and separate the refrigerant in the directly heated high-temperature regenerator main body, the solution does not boil in the liquid level detection box. The liquid level of the solution can be accurately measured by appropriate means such as an electrode and a float switch.

Further, by increasing the cross-sectional area of the opening of the communicating portion through which the solution enters and exits, the ability to follow the fluctuation of the solution level in the main body of the high-temperature regenerator is improved. By increasing the relationship L / D with the diameter D, a remarkable effect is exhibited, such as stability against instantaneous fluctuations.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a main part of a first embodiment.

FIG. 2 is a sectional view showing a main part of a second embodiment.

FIG. 3 is an explanatory diagram showing a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 High temperature regenerator 11 High temperature regenerator main body 12 Liquid level detection box 13 Solution communication part 14 Opening part 15 Reducer 16 Elbow 17 Steam communication part 18 Solution 19 Refrigerant vapor

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F25B 33/00 F25B 49/04

Claims (4)

(57) [Claims] 1. A side wall having a liquid level detection box through which a solution and a refrigerant vapor can flow in and out of the interior of a main body.
This is a high-temperature regenerator of an absorption refrigerator that is connected to a low-temperature regenerator, condenser, evaporator, absorber, heat exchanger, etc. by piping to form a refrigeration cycle, between the inside of the main body and the liquid level detection box. A high-temperature regenerator for an absorption refrigerator, wherein a communication portion through which a solution enters and exits is formed by a tapered tapered and substantially horizontal extending into a liquid level detection box. 2. A side wall having a liquid level detection box through which a solution and a refrigerant vapor can flow in and out of the main body,
This is a high-temperature regenerator of an absorption refrigerator that is connected to a low-temperature regenerator, condenser, evaporator, absorber, heat exchanger, etc. by piping to form a refrigeration cycle, between the inside of the main body and the liquid level detection box. A communication part through which the solution enters and exits is formed by an elbow that extends substantially horizontally into the liquid level detection box and then bends downward and opens downward. High temperature regenerator. 3. The ratio of the cross-sectional area of the minimum diameter opening of the communication portion to the plane area of the liquid level detection box higher than the solution communication portion is 0.
The high-temperature regenerator of the absorption refrigerator according to claim 1 , wherein the temperature is 2 to 0.5 . 4. A method for measuring a cross-sectional area of an opening of a minimum diameter portion of a communication portion and a liquid level detection.
The ratio of the output box to the flat area above the solution communication part is 0.
The high temperature of the absorption refrigerator according to claim 2, which is 2 to 1.0.
Regenerator.