JP4619871B2 - Evaporative cooling device - Google Patents

Description

  The present invention relates to a vaporization cooling apparatus that cools an object to be cooled by the latent heat of vaporization of a cooling fluid in a vaporization cooling chamber.

  The evaporative cooling device has a cooling fluid supply pipe and suction means connected to the evaporative cooling chamber, and is provided with a cooling unit that condenses the vaporized vapor at one end of the evaporative cooling chamber. It is possible to improve the efficiency of vaporization and cooling.

This vaporization cooling apparatus still has a problem that the vaporized vapor is not sufficiently condensed and the efficiency of vaporization cooling cannot be improved to a certain extent.
Japanese Utility Model Publication No. 3-61274

  The problem to be solved is to provide an evaporative cooling device that can significantly improve evaporative cooling efficiency by reliably condensing vapor vaporized in the evaporative cooling chamber.

The present invention forms a vaporization cooling chamber for cooling an object to be cooled, and provides a cooling unit on one end side of the vaporization cooling chamber to supply a cooling fluid to the vaporization cooling chamber and to connect the vaporization cooling chamber to suction means In order to evaporate and cool the object to be cooled, the evaporative cooling chamber is used as the jacket part of the reaction kettle, and the cooling part is used as the plate type heat exchange means. By providing a communication hole in the outer wall of the jacket portion, the steam vaporized in the vaporization cooling chamber and the cooling fluid are heat exchanged by the plate heat exchange means.

  The evaporative cooling device of the present invention can dramatically increase the heat exchange area by using the plate-type heat exchange means as the cooling unit, and reliably condenses the vaporized vapor with a small amount of cooling fluid. Can be improved.

  The present invention is provided with plate type heat exchange means, but the number of plates can be appropriately adjusted from a small number to a large number according to the amount of vaporized vapor to be condensed.

  In the present embodiment, an example in which the jacket portion 2 of the reaction kettle 1 is used as a vaporization cooling chamber is shown. An object to be cooled (not shown) placed inside the reaction kettle 1 is cooled by a cooling fluid as a cooling source supplied to the jacket portion 2.

  A jacket portion 2 is formed over almost the entire circumference of the reaction kettle 1, and a combined vacuum pump 4 and a cooling fluid supply pipe 5 as suction means are connected to the jacket portion 2. The plate-type heat exchange means 3 is attached over substantially the entire outer periphery of the jacket portion 2.

The plate type heat exchanging means 3 includes a plurality of corrugated plates 6 arranged in a stacked manner, a cooling fluid inlet 8 connected to a branch pipe 7 branched from a cooling fluid supply pipe 5 at an upper portion, and a cooling fluid at a lower portion. In addition to providing the outlet 12, a communication hole (not shown) is provided in the outer wall of the jacket portion 2, and vaporized vapor generated in the jacket portion 2 can be condensed by cooling with a cooling fluid.

  A discharge pipe 9 is connected below the jacket portion 2 and connected to the ejector 10 of the combination vacuum pump 4. The cooling fluid outlet 12 of the plate heat exchange means 3 is also connected to the ejector 10 via the discharge pipe 11.

  The combination vacuum pump 4 is formed by sequentially communicating the ejector 10, the tank 13, and the circulation pump 14 through the circulation path 15. A cooling water supply pipe 16 for supplying cooling water as a cooling fluid is connected to the upper portion of the tank 13. A part of the circulation path 15 is branched and the surplus water discharge pipe 17 is connected.

  When the object to be cooled in the reaction vessel 1 is cooled, the cooling fluid is injected into the jacket portion 2 from the cooling fluid supply pipe 5 and the cooling fluid is supplied to the entire outer surface of the reaction vessel 1. On the other hand, the circulation pump 14 of the combination vacuum pump 4 is driven, and the inside of the jacket portion 2 is brought into a predetermined pressure state, for example, a vacuum state below atmospheric pressure, through the discharge pipe 9 by the suction force generated by the ejector 10. As a result, the cooling fluid sprayed to the outer surface of the reaction kettle 1 takes the heat of the object to be cooled in the reaction kettle 1 and evaporates, whereby the object to be cooled can be vaporized and cooled by the latent heat of vaporization.

In this way, most of the vaporized steam generated in the jacket portion 2 flows down to one surface side of the plurality of plates 6 of the plate-type heat exchanging means 3, and heat exchanges with the cooling fluid flowing down on the other surface side to condense. By this, the convection of the vaporization vapor | steam in the jacket part 2 is accelerated | stimulated, and the cooling efficiency of a to-be-cooled object can be improved markedly.

  The remainder of the vaporized vapor of the cooling fluid that has cooled the object to be cooled by the jacket portion 2 and a part of the cooling fluid that could not be vaporized are sucked into the ejector 10 through the discharge pipe 9 and reach the tank 13. Similarly, the cooling fluid is sucked into the ejector 10 from the cooling fluid outlet 12 of the plate heat exchange means 3 and reaches the tank 13.

  Since the suction force that can be generated by the ejector 10 is determined by the temperature of the fluid flowing down the ejector 10, the cooling water supply pipe 16 appropriately supplies cooling water to the tank 13 by appropriately supplying the cooling water to the tank 13. The suction force of the ejector 10 can be controlled by adjusting the fluid temperature.

The block diagram which shows the Example of the vaporization cooling device of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Reaction kettle 2 Jacket part 3 Plate type heat exchange means 4 Combination vacuum pump 5 Cooling fluid supply pipe 6 Plate 8 Cooling fluid inlet 9 Discharge pipe 10 Ejector 12 Cooling fluid outlet 13 Tank 14 Circulation pump 15 Circulation path

Claims (1)

A vaporization cooling chamber for cooling an object to be cooled is formed, a cooling unit is provided on one end side of the vaporization cooling chamber, a cooling fluid is supplied to the vaporization cooling chamber, and the vaporization cooling chamber is connected to a suction means to be cooled. In the case of evaporating and cooling an object, the evaporative cooling chamber is used as a jacket portion of the reaction kettle, and the cooling portion is used as a plate type heat exchanging means. An evaporative cooling device characterized in that the vaporized vapor in the evaporative cooling chamber and the cooling fluid are heat-exchanged by the plate type heat exchange means by providing a communication hole in the outer wall .

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