JPS6135903Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is an absorption refrigerator generator, in particular, a radiator having a plurality of heat transfer tubes and a plurality of passes is disposed at the bottom of a box-shaped body, and The present invention relates to a generator in which a plurality of partition plates are provided between tube plates of a radiator to form solution passages corresponding to the number of passes of the radiator.

Generally, in this type of generator, it is desirable to improve the heat exchange performance between the heat source fluid flowing through the heat transfer tube and the solution flowing through the solution passage to generate more refrigerant gas. ,
It is necessary to have a high flow rate of the solution in the passage. On the other hand, the solution flows due to the difference in the liquid level of the solution at the entrance side and the exit side of the passage, and in order to increase the solution flow rate, it is necessary to increase the liquid level of the solution at the entrance side of the passage. As a result, it was necessary to increase the height of the partition plate.

On the other hand, the refrigerant gas generated by being heated by the radiator has a flow path above the solution,
Increasing the height of the partition plate is equivalent to increasing the flow resistance of the refrigerant gas by providing a barrier, and in order to allow the refrigerant gas to flow smoothly, the height of the partition plate should be lowered. Therefore, it is desirable to ensure sufficient circulation space for the refrigerant gas.

However, the present invention was devised in view of the above-mentioned circumstances, and its purpose is to increase the flow rate of the solution and improve the heat exchange performance between the heat source fluid and the solution. The purpose of this invention is to provide a generator for an absorption refrigerator that can smoothly circulate refrigerant gas and increase the refrigerating capacity. A plurality of radiators are provided, and a plurality of partition plates are provided between the tube plates of the radiator to form solution passages corresponding to the number of passes of the radiator, and each solution passage is provided with a plurality of partition plates. In addition to providing a baffle plate, an inlet/outlet for the heat source fluid and an inlet/outlet for the flowing liquid are provided so that the heat source fluid and the solution flowing through the heat transfer tube are in counterflow, and a condenser is provided above the solution passage on the solution outlet side. the height of the partition plate on the solution inlet side is made high, the height of the partition plate on the solution outlet side is made low, and the construction height of each of the solution passages of the heat transfer tube is is set higher on the solution inlet side and lower on the solution outlet side in accordance with the height of the partition plate.

Embodiments of the present invention will be described below based on the drawings.

In the drawing, 1 is a box-shaped body, and a radiator 2 is provided at the bottom of the box-shaped body 1, a condenser 3 is provided at the top, and the cross-sectional shape of the box-shaped body 1 is arcuate. The head cover 4 is then attached to the head cover 4.

The heat radiator 2 has a plurality of heat transfer tubes 23 installed between the tube sheets 21 and 22, which are connected to a solar water heater, a factory low-temperature drainage pipe, etc.
Headers 24, 25 are attached to the outside of the headers 1, 22, and partition plates 26, 26...
is installed internally to form 4 passes.

Furthermore, three partition plates 51, 52, 53 are provided between the tube plates 21, 22, and four-pass solution passages 61, 62, 6 corresponding to the number of passes of the radiator 2 are provided.
3 and 64, and these solution passages 6
1, 62, 63, and 64, a large number of buttful plates 6a... are planted in such a way as to be inconsistent with each other.

The heat source fluid such as hot water flowing through the heat transfer tube 23 and the solution passages 61, 62, 63, 6
The header 24 is provided with an inlet 71 and an outlet 72 for the heat source fluid, and the body 1 is provided with an inlet 81 and an outlet 82 for the solution so that the solution flowing through the main body 1 and the solution flow in opposite directions.

However, in the present invention, the solution outlet 82
The upper part of the side solution passage 64 is used as the refrigerant flow passage 7 to the condenser 3, and the height of the partition plate 51 on the solution inlet 81 side is made the highest, and the height of the partition plate 53 on the solution outlet 82 side is made the highest. In addition, these partition plates 51, 5
2, 53, the positions at which the heat transfer tubes 23 are installed are also the lowest on the heat source fluid inlet 71 side and the highest on the outlet 72 side.

In the generator configured as described above, the heat source fluid flows in from the inlet 71 and flows as shown by the arrow in FIG. 3, and flows out from the outlet 72, and the solution flows in from the inlet 81 as shown in FIG. As shown by the arrow, the water flows in a meandering manner between the baffle plates 6a...
While flowing out from the outlet 82 and being guided to an absorber (not shown), the solution that has received heat from the heat source fluid is partially vaporized and becomes refrigerant gas, and passes through the refrigerant flow path 7 to the condenser 3. and is further guided to an evaporator (not shown).

However, in this embodiment, the height of the partition plate 51 on the side of the solution inlet 81 is made the highest, and
Since the height of the partition plate 53 on the side of the solution outlet 82 is made the lowest, a large difference in the solution level between the solution inlet 81 side and the outlet 82 side can be maintained, and therefore the flow rate of the solution can be increased. Moreover, since the buff-full plates 6a are formed to cause the solution to flow in a meandering manner, the relative velocity of the solution to the heat transfer tubes 23 can be further increased. Therefore, heat can be efficiently transferred from the heat source fluid to the solution. Therefore, even if low-temperature hot water such as factory wastewater is used as the heat source fluid, the refrigerant absorbed in the pre-solution can be efficiently transferred. can be vaporized. On the other hand, the refrigerant gas that is vaporized and generated from the solution as described above is
3... Because the temperature is high on the inlet 71 side, more refrigerant gas is generated on the inlet 71 side and less on the outlet 72 side, but the height of the partition plates 52 and 53 on the side where more refrigerant gas is generated is Since the flow resistance gradually decreases, the flow resistance becomes extremely low, and the generated refrigerant gas is smoothly guided to the condenser 3 through the refrigerant flow path 7. Furthermore, the installation height of the heat transfer tubes 23 is configured to be higher on the inlet 81 side and lower on the outlet 82 side in accordance with the height of the partition plates 51, 52, 53, so that the solution at the inlet 81 side Even if the temperature rises, the solution pressure will not make it difficult to generate refrigerant gas.

In the above embodiment, the number of passes is four, but of course the number of passes is not limited to four.

As is clear from the above explanation, the generator of the absorption chiller of the present invention has a radiator 2 having a plurality of heat transfer tubes 23 and a plurality of passes arranged at the bottom of the box-shaped body 1. And the tube plates 21, 2 of the radiator 2
A plurality of partition plates 51, 52... are provided between the two to form solution passages 61 corresponding to the number of passes of the radiator 2, and a buffer plate 6a is provided in each of these solution passages 61. As if the heat source fluid and the solution flowing through the heat transfer tubes 23 are in counterflow,
Heat source fluid inlet/outlet 72, 71 and solution inlet/outlet 8
2, 81, and a refrigerant flow passage 7 to the condenser 3 above the solution passage 64 on the side of the solution outlet 82.
At the same time, the partition plate 5 on the side of the solution inlet 81
1, and the partition plate 5 on the solution outlet 82 side.
3, and the installation height of the heat transfer tubes 23 in each of the solution passages 61 is adjusted to match the height of the partition plates 51, 52, 53 on the solution inlet 81 side. Since it is characterized by being high and low on the solution outlet 82 side, the solution level on the solution inlet 81 side can be made high, and the flow rate of the solution can be increased. It is possible to prevent the generation of refrigerant gas from becoming difficult due to the solution pressure in the entire range of . It is possible to generate refrigerant gas well.

In addition, according to the present invention, the heat source fluid and the solution flow in opposite directions, and the solution outlet 82 side is brought into contact with the high temperature heat source fluid to emit more refrigerant gas at the solution outlet 82 side. By doing so, we were able to improve the heat exchange performance as a whole.
Even if a low-temperature heat source fluid is used, refrigerant gas can be successfully generated from a solution.

In addition, the partition plates 51, 52, 53 are connected to the solution passage 6.
1... is high on the inlet side and low on the outlet side, the relative velocity of the solution in the solution passage 61... can be increased, and therefore the heat exchange performance with the heat source fluid can be improved, and the low temperature heat source Even if a fluid is used, the generated refrigerant gas can flow smoothly.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, FIG. 2 is a schematic perspective view of the main parts, and FIG. 3 is a schematic explanatory diagram showing the flow of heat source fluid and solution. 1...Box-shaped body, 2...Radiator, 21, 22...
... tube sheet, 23 ... heat exchanger tube, 3 ... condenser, 51,
52, 53... Partition plate, 61, 62, 63, 64
. . . Solution passage, 7 . . . Refrigerant flow path, 6a .

Claims (1)

[Scope of utility model registration request] A radiator 2 having a plurality of heat transfer tubes 23 and a plurality of passes is disposed at the bottom of the box-shaped body 1, and a plurality of partitions are provided between the tube plates 21 and 22 of the radiator 2. Plates 51, 52... are provided to form solution passages 61 corresponding to the number of passes of the radiator 2, and a buffer plate 6a is provided for each of these solution passages 61.
... are provided, and the heat source fluid inlets and outlets 72 and 71 and the solution inlets and outlets 82 and 8 are provided so that the heat source fluid and the solution flowing through the heat transfer tubes 23 are in counterflow.
1, the upper part of the solution passage 64 on the solution outlet 82 side is used as the refrigerant flow passage 7 to the condenser 3, and the height of the partition plate 51 on the solution inlet 81 side is increased, so that the solution outlet 82 The height of the side partition plate 53 is lowered, and the installation height of the heat transfer tubes 23 in each of the solution passages 61 is set to be lower than that of the partition plate 53.
1, 52, and 53, the generator is higher on the solution inlet 81 side and lower on the solution outlet 82 side.