JPH1038408A - Evaporation type cooling liquid generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an evaporation type cooling liquid generator that does not cause air pollution and is suitable for reducing its size. SOLUTION: An evaporation type cooling liquid generator 50 includes an evaporation vessel 51, a liquid sprayer, a vapor discharge device, a cooling medium circulating device and a liquid supply device. The evaporation vessel 51 has a closed space inside. Liquid 61 to be cooled is sprayed in the closed inner space of the evaporation vessel 51 through spray nozzles 52 of the liquid sprayer. The vapor discharge device reduces the vapor pressure in the closed inner space to evaporate the liquid 61 sprayed and discharge the vapor of the liquid 61 outside the evaporation vessel 51. The cooling medium circulation device circulates cooling medium through the closed inner space of the evaporation vessel 51. The liquid 61 to be cooled is supplied from outside the evaporation vessel 51 by the liquid supply device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an evaporative cooling liquid generator, and more particularly to an evaporative cooling liquid generator which is free from air pollution and is most suitable for miniaturization of the apparatus.

[0002]

2. Description of the Related Art FIG. 2 is a principle diagram of an absorption refrigerator according to the prior art. As shown in FIG. 2, the absorption refrigerator includes an evaporator 10, an absorber 20, a high-temperature regenerator (high-temperature separator) 30, and a condenser 40. The evaporator 10 evaporates the water 1 to generate cooling water, and further cools the cooling water. Absorber 20
Absorbs water vapor evaporated by the evaporator 10 into lithium bromide to form a mixed solution. The high temperature regenerator 30 separates water vapor and lithium bromide from the liquid mixture generated in the absorber 20. The condenser 40 condenses the water vapor separated in the high-temperature regenerator 30 to produce water 1.

[0003] In the evaporator 10, a spray nozzle 11 is disposed above the internal space, and the spray nozzle 11 sprays the water 1 supplied from the condenser 40 into the internal space of the evaporator 10. The sprayed water 1 cools a cooling water pipe 12 provided in the internal space of the evaporator 10. The cooling water pipe 12 is disposed outside the evaporator 10 and is connected in series to a cooling water circulation pump 13 for circulating cooling water and a load 14 for cooling with cooling water. An evacuation device 15 such as a vacuum pump is connected to the evaporator 10.
Is maintained in a vacuum, and the water 1 sprayed from the spray nozzle 11 is evaporated.

[0004] The absorber 20 is connected to the evaporator 10. In this absorber 20, the spray nozzle 2 is located above the internal space.
The spray nozzle 21 sprays lithium bromide 2 supplied from the high-temperature regenerator 30 into the interior space of the absorber 20. A mixed solution 3 of water vapor and lithium bromide is stored at the bottom of the internal space of the absorber 20. The absorber 20 and the high-temperature regenerator 30 are respectively connected to the supply pipe 2
The mixed liquid 3 generated by the absorber 20 is supplied to the high-temperature regenerator 30 by the circulation pump 23 which is connected to each other through the supply pipe 22 and disposed at an intermediate portion of the supply pipe 22.

[0005] A superheated boiler 31 is connected to the high temperature regenerator 30, and the superheated boiler 31 separates the water vapor of the mixed solution 3 and lithium bromide by superheating. The lithium bromide separated from the mixture 3 is stored at the bottom of the high-temperature regenerator 30 and circulated to the spray nozzle 21 of the absorber 20. The water vapor separated from the mixture 3 is supplied to the supply pipe 32
To the condenser 40.

[0006] In the condenser 40, a cooling water pipe 41 is provided in the internal space. The cooling water pipe 41 condenses steam supplied from the high temperature regenerator 30 by heat exchange to produce water 1. The generated water 1 is stored at the bottom of the condenser 40 and circulated to the spray nozzle 11 of the evaporator 10. The cooling water pipe 41 is disposed outside the condenser 40 and connected in series to a circulation pump 42 for circulating the cooling water and a cooling tower 43 for cooling the cooling water whose temperature has increased due to heat exchange.

The following operation is performed in the absorption refrigerator configured as described above. First, the internal space of the evaporator 10 is maintained in a vacuum by the exhaust device 15, and in this state, the water 1 is sprayed (dropped) from the spray nozzle 11 into the internal space of the evaporator 10. The sprayed water 1 comes into contact with the cooling water pipe 12 and evaporates. Since the internal space of the evaporator 10 is kept in a vacuum, the water 1 evaporates at about 5 ° C., and the water 1 evaporates by taking away the latent heat of the cooling water flowing inside the cooling water pipe 12. Is cooled further and load 1
4 is cooled.

[0008] The water vapor generated in the evaporator 10 is supplied to an absorber 20. In the absorber 20, lithium bromide is sprayed (dropped) from the spray nozzle 21 into the internal space, and a mixed solution 3 in which steam and lithium bromide are mixed is generated. This liquid mixture 3 is stored at the bottom of the absorber 20. The stored mixed liquid 3 is supplied to the high-temperature regenerator 30 through the supply pipe 22 by the circulation pump 23.

The mixed solution 3 supplied to the high-temperature regenerator 30 is superheated by the superheater boiler 31 and separated into steam and lithium bromide. In the superheated boiler 31, by utilizing the fact that the boiling point of water vapor and the boiling point of lithium bromide are different, only water can be evaporated from the mixed solution 3 and only lithium bromide can be condensed and both are completely separated. it can. The steam separated from the mixture 3 in the high-temperature regenerator 30 is supplied to the condenser 40 through the supply pipe 3.
2 is supplied.

The water vapor supplied to the condenser 40 comes into contact with the cooling water pipe 41, and the water vapor is cooled and condensed to become water 1 and stored at the bottom of the condenser 40. The stored water 1 is circulated to the spray nozzle 11 of the evaporator 10. Cooling water is circulated inside the cooling water pipe 41 by a circulation pump 42, and the cooling water whose temperature has risen due to condensation of steam is cooled by a cooling tower 43.

[0011]

The following points are not taken into consideration in the above-mentioned absorption refrigerator according to the prior art. That is, the absorption refrigerator has the evaporator 10 and the absorber 2
0, a plurality of processing units including a high-temperature regenerator 30 and a condenser 40, and each of the processing units includes an auxiliary device such as a circulating pump 13, 23, 42, a load 14, an exhaust device 15, a superheated boiler 31, and a cooling tower 43. Is arranged. For this reason, there has been a problem that the absorption chiller device itself has a large and complicated configuration and cannot be deployed in a small-scale facility. Furthermore, the high temperature regenerator 3 of the absorption refrigerator
0 is provided with a superheated boiler 31. This superheated boiler 31 generates exhaust gas by combustion and induces air pollution, so that there is a problem that it is difficult to comply with exhaust gas regulations.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an evaporative cooling liquid generating apparatus which is free from air pollution and is most suitable for downsizing the apparatus.

[0013]

Means for Solving the Problems To solve the above-mentioned problems, the invention described in claim 1 is directed to an evaporative cooling liquid generating apparatus, comprising: an evaporating container having a closed internal space; A liquid spraying means for spraying a liquid to be cooled in a space, and a vapor for reducing the vapor pressure in the closed internal space of the evaporation container to evaporate the sprayed liquid and discharging the evaporated liquid to the outside of the evaporation container It is characterized by comprising discharge means, cooling medium circulating means for circulating a cooling medium in the closed internal space of the evaporation container, and liquid replenishing means for replenishing liquid from outside the evaporation container.
In the invention described in claim 1, instead of circulating the liquid sprayed in the closed internal space of the evaporation container, liquid is supplied from the outside of the evaporation container, and the sprayed and evaporated liquid is discharged from the evaporation container. Since the gas is exhausted to the outside, an absorber, a high-temperature regenerator, and a condenser necessary for circulating and using the liquid, and an auxiliary device required for these processing units are eliminated, and the device itself can be reduced in size. Further, the liquid is cooled by a state change such as evaporation and cooling of the liquid, and the evaporated liquid is exhausted to the outside. Therefore, if water or the like harmless to the liquid is used, air pollution is eliminated.

According to a second aspect of the present invention, in the evaporative cooling liquid generator according to the first aspect, the liquid spraying means sprays the liquid in a closed internal space of the evaporation container. And a storage unit for storing the liquid sprayed on the bottom of the closed internal space of the evaporation container, and a circulation pump for circulating the liquid stored in the storage unit to the liquid spray nozzle. I do.

According to a third aspect of the present invention, in the evaporative cooling liquid generator according to the second aspect, the liquid replenishing means reduces the amount of the liquid stored in the storage section of the evaporation container to a predetermined amount. A ball tap for control is provided.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An evaporative cooling liquid generator according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a principle diagram of an evaporative cooling liquid generator according to an embodiment of the present invention. As shown in the figure, the evaporative cooling liquid generator 50 includes an evaporating container 51, a liquid spraying unit, a cooling medium circulation unit, a vapor discharging unit, and a liquid replenishing unit.

The evaporating container 51 generates a cooling medium by evaporating and cooling the liquid 61 in the closed internal space. In the present embodiment, harmless water is used as the liquid 61 even when it evaporates and is released to the atmosphere.

The liquid spraying unit comprises a liquid spraying nozzle 5
2, a storage section 51A, a liquid supply pipe 58 and a liquid supply pump 59 are provided. The liquid spray nozzle 52 is disposed above the closed internal space of the evaporation container 51, and the liquid spray nozzle 52
Sprays (drops) the liquid 61 on the closed internal space. The storage part 51 </ b> A is provided at the bottom of the closed internal space of the evaporation container 51, and is formed using the inner wall of the evaporation container 51. A liquid 61 in which the amount of liquid stored is controlled to a constant amount is stored in the storage part 51A. The reservoir 51A is connected to the liquid spray nozzle 52 via a liquid supply pipe 58 and a liquid supply pump 59, and the liquid supply pipe 58 and the liquid supply pump 59
Supplies (circulates) the liquid 61 stored in the storage section 51A to the liquid spray nozzle 52.

The cooling medium circulation unit includes a cooling medium circulation pipe 5.
3. The cooling medium circulation pump 54 and the load 55 are provided. The cooling medium circulation pipe 53 is disposed at the center of the closed internal space of the evaporation container 51, and the cooling medium circulation pipe 53 is cooled by the liquid (evaporated liquid) 61 sprayed from the spray nozzle 52. The cooling medium circulating pump 54 and the load 55 are respectively connected in series to the cooling medium circulating pipe 53 and disposed outside the evaporating vessel 51, and the cooling medium circulating pump 54 circulates the cooling medium flowing through the cooling medium circulating pipe 53. Let it. In this embodiment, water is used as the cooling medium.

The steam discharge unit has a steam exhaust pipe 56 and an exhaust device 57. The steam exhaust pipe 56 connects the closed internal space of the evaporation container 51 and the outside atmosphere via an exhaust device 57. The evacuation device 57 is configured by, for example, a vacuum pump, and keeps the internal sealed space of the evaporating container 51 in a vacuum state to promote the evaporation of the liquid 61 sprayed from the spray nozzle 52 and to transfer the evaporated vapor to the outside of the evaporating container 51. Discharge.

The liquid replenishing unit includes a liquid replenishing pipe 60A for replenishing the liquid 61 from the outside of the evaporation container 51 and a ball tap 60B for controlling the amount of liquid supplied from the liquid replenishing pipe 60A to a constant amount. The ball tap 60B replenishes the liquid 61 when the liquid level of the liquid 61 stored in the storage part 51A is lower than a preset height, and stops the replenishment when the liquid level is higher.

The liquid cooling operation of the evaporative cooling liquid generator constructed as described above is as follows. First, the closed internal space of the evaporation container 51 of the evaporative cooling liquid generator is kept in a vacuum state by the exhaust device 57 of the vapor discharge unit. Next, the liquid supply pump 59 of the liquid spraying unit is started, and the liquid 61 stored in the storage section 51A is passed through the liquid supply pipe 58 from the liquid spray nozzle 52 to the evaporation vessel 51.
(Drops) in the closed internal space of The sprayed liquid 61 contacts the cooling medium circulation pipe 53 in the closed internal space and evaporates. At this time, since the sealed internal space is kept in a vacuum state by the exhaust device 57, when water is used, the liquid 61 evaporates at about 5 ° C. and evaporates from the cooling medium flowing inside the cooling medium circulation pipe 53. Since the latent heat is removed, the cooling medium is cooled. Further, the liquid 61 sprayed in the closed internal space also removes the heat of the evaporation container 51 itself, so that the temperature of the closed internal space of the evaporation container 51 is also reduced. As a result, the liquid 61 stored in the storage unit 51A is cooled, and the temperature of the liquid 61 sprayed from the liquid spray nozzle 52 through each of the liquid supply pipe 58 and the liquid supply pump 59 decreases. The liquid 61 to be sprayed evaporates easily, and the cooling effect is enhanced. On the other hand, the cooled cooling water flowing through the cooling medium circulation pipe 53 is circulated by the cooling medium circulation pump 54 to supply the cooling medium to the load 55, and the load 55 is cooled.

The steam generated in the closed internal space of the evaporation vessel 51 is discharged to the atmosphere through a steam exhaust pipe 56 by an exhaust device 57. Since water is used for the liquid 61, the vapor is merely water vapor and does not cause air pollution. Due to the release of the vapor, the liquid amount of the liquid 61 stored in the storage part 51A decreases, but the liquid level of the liquid 61 is constantly detected by the ball tap 60B.
When the liquid level of the liquid 61 becomes lower than the preset liquid level, the evaporating vessel 5 is supplied through the liquid supply pipe 60A.
The liquid 61 is supplied to the storage section 51A in the closed internal space from outside of the storage device 1.

[0024]

According to the present invention, it is possible to provide an evaporative cooling liquid generating apparatus which is free from air pollution and is most suitable for downsizing the apparatus.

[Brief description of the drawings]

FIG. 1 is a principle diagram of an evaporative cooling liquid generator according to an embodiment of the present invention.

FIG. 2 is a principle diagram of an absorption refrigerator according to the related art.

[Explanation of symbols]

50 Evaporative cooling liquid generator, 51 Evaporation container, 51
A storage unit, 52 liquid spray nozzle, 53 cooling medium circulation pipe, 54 cooling medium circulation pump, 55 load, 56
Steam exhaust pipe, 57 exhaust device, 58 liquid supply pipe, 59
Liquid supply pump, 60A liquid supply tube, 60B ball tap, 61 liquid.

Claims (3)

[Claims] An evaporating container having a closed internal space; a liquid spraying means for spraying a liquid to be cooled into the closed internal space of the evaporating container; Vapor evacuation means for evaporating the evaporating liquid and discharging the evaporated liquid to the outside of the evaporating container, cooling medium circulating means for circulating a cooling medium in the closed internal space of the evaporating container, and liquid from outside the evaporating container. A liquid replenishing means for replenishing the evaporative cooling liquid generator. 2. The evaporative cooling liquid generating apparatus according to claim 1, wherein the liquid spraying means includes: a liquid spray nozzle for spraying a liquid into a closed internal space of the evaporation container; An evaporative cooling liquid generator, comprising: a storage unit that stores liquid sprayed at the bottom of a space; and a circulation pump that circulates the liquid stored in the storage unit to the liquid spray nozzle. 3. The evaporative cooling liquid generating device according to claim 2, wherein the liquid replenishing means includes a ball tap for controlling a liquid stored in a storage part of the evaporation container to a constant amount. Characteristic evaporative cooling liquid generator.