JP3089534B2 - Absorption chiller / heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorption chiller / heater having an evaporator and an absorber having a tray provided therein.
Particularly, the present invention relates to an absorption chiller / heater suitable for improving the horizontal accuracy of the evaporator tray and the absorber tray and stabilizing the refrigerating capacity.

[0002]

2. Description of the Related Art In a conventional absorption chiller / heater, as shown in FIG. 6, a separator 2 for separating a dilute solution heated by a high-temperature regenerator 1 into refrigerant vapor and an intermediate concentrated solution, A high-temperature solution heat exchanger 3 for exchanging heat with a dilute solution to lower the temperature;
A low-temperature regenerator 6 that reheats the cooled intermediate concentrated solution with refrigerant vapor to generate a concentrated solution, a low-temperature solution heat exchanger 4 that heat-exchanges the concentrated solution with a dilute solution, and cools the refrigerant vapor to liquid refrigerant. A condenser 7 for condensing, an evaporator 8 in which an evaporator tray 8a is provided in the upper part and a liquid refrigerant is dropped from the evaporator tray 8a to evaporate, and an absorber tray 9a is provided in the upper part and the evaporator tray 9a is provided. An absorber 9 for dropping a concentrated solution from the low-temperature solution heat exchanger 4 and absorbing the refrigerant vapor evaporated in the evaporator 8 to generate a dilute solution, and a solution circulation pump 5 connected to the absorber 9 for sucking the dilute solution This is a configuration including:

[0003] Above the evaporator 8 and the absorber 9, an evaporator tray 8a for dropping liquid refrigerant and an absorber tray 9a for dropping a concentrated solution are mounted. These evaporator tray 8a and absorber tray are provided. 9a is formed in a U-shaped box shape with an open upper surface, and has a large number of holes formed in the bottom surface, and a concentrated solution or liquid refrigerant flowing from the upper surface is stored at a predetermined height. Thereafter, the liquid column pressure is applied to the coil 8b of the evaporator 8 or the coil 9b of the absorber 9 through a number of holes so as to be almost uniformly dropped and sprayed. If the evaporator tray 8a or the absorber tray 9a is not kept substantially horizontal, the height of the liquid level in each tray becomes uneven, and the amount of dripping becomes uneven, greatly affecting the refrigerating capacity.

[0004] The horizontal installation of the absorption chiller / heater is performed by the bottom 11a.
The bottom surface 11a is an indirect plane that is dimensionally separated from the evaporator tray 8a and the absorber tray 9a and forms a horizontal plane. Since the evaporator tray 8a and the absorber tray 9a are not easily formed on the reference surface of the horizontal reference plate 12 and the accuracy of the horizontality of the evaporator tray 8a and the absorber tray 9a is deteriorated, the refrigeration capacity is likely to be insufficient.

[0005]

In the conventional absorption chiller / heater, since the horizontal accuracy of the evaporator tray and the absorber tray is poor, the drop amount of the liquid refrigerant or the concentrated solution becomes non-uniform, so that the refrigerating capacity is reduced. There is a problem that shortage easily occurs.

An object of the present invention is to provide an absorption chiller / heater capable of improving the horizontal accuracy of an evaporator tray and an absorber tray and preventing a decrease in refrigeration capacity.

[0007]

In order to achieve the above object, an absorption chiller / heater according to the present invention separates a dilute solution into a refrigerant vapor and an intermediate concentrated solution by heating a dilute solution. A separator, a high-temperature solution heat exchanger that heat-exchanges the intermediate concentrated solution with a dilute solution, lowers the temperature, a low-temperature regenerator that reheats the cooled intermediate concentrated solution with refrigerant vapor to obtain a concentrated solution, and dilutes the concentrated solution. A low-temperature solution heat exchanger that exchanges heat with the solution to lower the temperature, a condenser that condenses the refrigerant vapor into a liquid refrigerant, and an evaporator that has an evaporator tray inside and evaporates by dropping the liquid refrigerant from the evaporator tray An absorber in which an absorber tray is provided in the upper part, a concentrated solution from the low-temperature solution heat exchanger is dropped from the absorber tray, and the refrigerant vapor absorbed by the evaporator is absorbed to generate a dilute solution;
In an absorption chiller / heater provided with a horizontal reference plane of an evaporator tray and an absorber tray, an evaporator and an absorber are housed in one container via a common partition, and a plurality of convex portions are formed in the container by the common partition. And projecting through the bottom surface of the projection, and a horizontal reference plane is formed on the bottom side of each projection.

The container may be formed in a hollow cylindrical shape, the common partition may be formed in an annular shape, and each projection may be formed by dividing the common partition into a plurality in the circumferential direction.

[0009]

According to the present invention, a plurality of projections provided on the bottom side of the common partition between the evaporator and the absorber housed in the container are used as a horizontal reference plane, and the horizontal reference plane holds the container horizontally. By installing a horizontal reference plate and arranging the evaporator tray and the absorber tray at the same level as this horizontal reference plate,
Horizontal installation accuracy of the evaporator tray and the absorber tray is improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 to 3, a high-temperature regenerator 1 for heating a dilute solution, a separator 2 for separating the dilute solution into refrigerant vapor and an intermediate concentrated solution, and a heat exchange between the intermediate concentrated solution and the dilute solution are performed. A high-temperature solution heat exchanger 3 for lowering the temperature, and a low-temperature regenerator 6 for reheating the cooled intermediate concentrated solution with refrigerant vapor to generate a concentrated solution.
And a low-temperature solution heat exchanger 4 for heat-exchanging the concentrated solution with a dilute solution to lower the temperature, and a condenser 7 for condensing refrigerant vapor into liquid refrigerant.
And an evaporator tray 8a is provided inside the evaporator tray 8a.
An evaporator 8 that drip and evaporates a liquid refrigerant, and an absorber tray 9a provided in the upper part, and a refrigerant vapor evaporated by the evaporator 8 by dropping a concentrated solution from the low-temperature solution heat exchanger 4 from the absorber tray 9a. And a solution circulation pump 5 connected to the absorber 9 for circulating the dilute solution. The evaporator 8 and the absorber 9 Is accommodated in one hollow cylindrical container 11 via an annular common partition 10, and a plurality of convex portions 10 a are protruded from the common partition 10 through the bottom surface 11 a of the container 11, and each convex portion 10 a Is formed on the horizontal reference plane of the evaporator tray 8a and the absorber tray 9a.

Above the evaporator 8 and the absorber 9, an evaporator tray 8a for dropping liquid refrigerant and an absorber tray 9a for dropping a concentrated solution are mounted. These evaporator tray 8a and absorber tray are provided. 9a has a U-shaped box-shaped cross section with an open upper surface, is formed in an annular shape, and has a large number of holes formed in the bottom surface. Of the evaporator 8 or absorber 9 through a number of holes due to the liquid column pressure.
Are almost uniformly dropped and sprayed on the annular coils 8b and 9b. As shown in FIGS. 4 and 5, a plurality of tray fixing plates 8 provided in the radial direction are provided.
c and 9c, the circumferential direction is fixed, and the lower surface is supported by tray fixing plates 8d and 9d. Further, the coil fixing plate 8 is separated from the tray fixing plates 8d and 9d.
e, 9e are provided, and spacers 8f, 9f are provided in the coil fixing plates 8e, 9e in a vertical direction at a predetermined pitch so as to sandwich the coils 8b, 9b in plural rows in the vertical direction.

The common partition 10 is provided substantially concentrically with the container 11 so as to partition the evaporator 8 and the absorber 9 from each other.
In addition, the bottom surfaces of the three convex portions 10a provided by dividing the circumference into approximately three equal parts are machined into a horizontal reference plane. These convex portions 10a
The common partition 10 is erected substantially vertically by mounting the bottom surface of the common partition on a horizontal plane. After arranging the coils 8b and 9b, the horizontal reference plate 12 is fixed to the side wall of the container 11 at the level of the bottom surface of the evaporator tray 8a and the absorber tray 9a. Next, the evaporator tray 8a and the absorber tray 9a are arranged in alignment with the position of the horizontal reference plate 12, and the tray fixing plates 8c, 9c are inserted and fixed.
By fixing both ends of 9c to the upper end of the common partition 10, the evaporator tray 8a and the absorber tray 9a are held substantially horizontally.

According to the present embodiment, since the evaporator tray and the absorber tray are held substantially horizontally, the liquid surface of the liquid refrigerant or the concentrated solution stored in the evaporator tray and the absorber tray becomes substantially horizontal. , The liquid column pressures to many holes on the bottom surface are equal, and the liquid refrigerant or the concentrated solution drops almost uniformly from any of the holes, and is evenly distributed to the coils of the evaporator and the absorber. As a result, the liquid film thickness on the coil becomes substantially uniform, and a decrease in the refrigerating capacity due to the non-uniform liquid film thickness or the non-uniform dropping amount is prevented, and the refrigerating capacity is stabilized.

[0014]

According to the present invention, since the evaporator tray and the absorber tray are held substantially horizontally, a decrease in the refrigeration capacity due to the non-uniform dripping amount of the liquid refrigerant or the concentrated solution is prevented,
This has the effect of stabilizing the refrigeration capacity.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of the present invention.

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

FIG. 3 is a view as viewed from an arrow A in FIG. 2;

FIG. 4 is a view taken in the direction of arrow B in FIG. 2;

FIG. 5 is a perspective view of FIG. 2;

FIG. 6 is a diagram showing a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 High temperature regenerator 2 Separator 3 High temperature solution heat exchanger 4 Low temperature solution heat exchanger 5 Solution circulation pump 6 Low temperature regenerator 7 Condenser 8 Evaporator 8a Evaporator tray 9 Absorber 9a Absorber tray 10 Common partition 10a Convex part 11 container 12 horizontal reference plate

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F25B 15/00 F25B 37/00 F25B 39/02

Claims (2)

(57) [Claims] 1. A high-temperature regenerator for heating a dilute solution, a separator for separating the dilute solution into refrigerant vapor and an intermediate concentrated solution, and a high-temperature solution for lowering the temperature by exchanging the intermediate concentrated solution with the dilute solution. A heat exchanger, a low-temperature regenerator that reheats the cooled intermediate concentrated solution with the refrigerant vapor to obtain a concentrated solution, a low-temperature solution heat exchanger that exchanges heat of the concentrated solution with the dilute solution to lower the temperature, and the refrigerant A condenser for condensing the vapor into a liquid refrigerant, an evaporator tray provided at an upper portion, an evaporator for dropping the liquid refrigerant from the evaporator tray to evaporate, and an absorber at an upper portion provided with an absorber tray. An absorber that drops the concentrated solution from the low-temperature solution heat exchanger from the tray and absorbs the refrigerant vapor evaporated by the evaporator to generate a dilute solution; and a horizontal reference surface of the evaporator tray and the absorber tray. In the absorption chiller-heater comprising: The container and the absorber are accommodated in a single container through a common partition, and a plurality of convex portions penetrate through the bottom surface of the container and protrude from the common partition, and the horizontal reference surface is positioned at the base of each convex portion. An absorption chiller / heater characterized by being formed in. 2. The container is formed in a hollow cylindrical shape, and the common partition is formed in an annular shape.
2. The absorption chiller / heater according to claim 1, wherein the common partition is formed by dividing the common partition into a plurality in the circumferential direction.