JP2009041874A - Evaporative cooling device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an evaporative cooling device capable of uniformly and efficiently performing evaporative cooling of an entire cooled object. <P>SOLUTION: A cooling fluid injection nozzle 16 is disposed on an outer periphery of a jacket portion 2 of a reaction pot 1, and connected with a branch pipe 15. A cooling fluid accumulating portion 3 is formed on a bottom portion of the jacket portion 2. A circulation pump 10 and a plurality of ejectors 11 are connected through pipe conduits 9 at a lower face of the cooling fluid accumulating portion 3. The jacket portion 2 is communicated with outlet sides of the plurality of ejectors 11 through the pipe conduits 14. Suction ports 13 of the ejectors 11 are directly connected with the jacket portion 2. In a case of cooling the reaction pot 1, the cooling fluid is injected from the cooling fluid injection nozzle 16 into the jacket portion 2, thus the cooling fluid of a prescribed temperature is supplied to the entire reaction pot 1, and the reaction pot 1 can be evenly evaporatively cooled. <P>COPYRIGHT: (C)2009,JPO&INPIT

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 is provided with a cooling fluid conduit having a plurality of cooling fluid injection ports in the evaporative cooling chamber, injecting the cooling fluid from the cooling fluid injection port to the object to be cooled, and connecting the evaporative cooling chamber to the suction means. Thus, by supplying the cooling fluid uniformly and uniformly to the entire object to be cooled, the entire object to be cooled can be cooled evenly.

In this evaporative cooling device, since the temperature of the cooling fluid in the cooling fluid supply pipe cannot be accurately maintained at a predetermined value in the initial stage of evaporative cooling, the entire object to be cooled is vaporized uniformly and efficiently. There was a problem that could not be cooled. If the temperature of the cooling fluid to be supplied is lower than the predetermined value, it takes time until the cooling fluid evaporates, causing a time delay. On the other hand, it is sufficient if the temperature of the cooling fluid is higher than the predetermined value. This is because proper cooling cannot be performed.
JP 2006-258316 A

  The problem to be solved is to provide an evaporative cooling apparatus that can uniformly and efficiently evaporate and cool the entire object to be cooled.

  The present invention forms a vaporization cooling chamber for cooling an object to be cooled, supplies a cooling fluid to the vaporization cooling chamber, and vaporizes and cools the object to be cooled by connecting the vaporization cooling chamber to suction means. A cooling fluid reservoir for storing a predetermined amount of cooling fluid in the evaporative cooling chamber is formed, and a circulation pump and a plurality of ejectors are sequentially connected to the cooling fluid reservoir, and the suction ports of the plurality of ejectors are connected to the evaporative cooling chamber. And the outlet side of the plurality of ejectors are also connected to the evaporative cooling chamber.

  In the evaporative cooling device of the present invention, a circulation pump and a plurality of ejectors are sequentially connected to the cooling fluid reservoir, and the suction ports of the plurality of ejectors are connected to the evaporative cooling chamber at the shortest distance, and the outlets of the plurality of ejectors Since the side is also connected to the evaporative cooling chamber, the evaporative cooling chamber can be maintained in a desired reduced pressure state by the vacuum suction force generated at the suction ports of the plurality of ejectors, and the cooling fluid at a predetermined temperature in the cooling fluid reservoir Is supplied to the evaporative cooling chamber via the circulation pump, so that the entire object to be cooled can be evaporatively cooled without unevenness.

  The present invention forms a cooling fluid reservoir for storing a predetermined amount of cooling fluid in the evaporative cooling chamber, but a part of the bottom of the evaporative cooling chamber can be shared as the cooling fluid reservoir.

  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 substantially the entire circumference except for the upper surface of the reaction kettle 1, and the bottom of the jacket portion 2 is used as a cooling fluid reservoir 3. In the present embodiment, the steam pipe 5 is inserted into the fluid of the cooling fluid reservoir 3. A control valve 6 for controlling the amount of supplied steam is attached to the inlet side of the steam pipe 5, and steam that automatically discharges only condensate condensed with steam is discharged to the outlet side of the steam pipe 5. A trap 7 is attached. The cooling fluid 3 is heated and evaporated by the steam supplied from the steam pipe 5, and the reaction vessel 1 can be steam-heated by filling the jacket portion 2.

A circulation pump 10 and an ejector 11 are sequentially connected to the lower end surface of the cooling fluid reservoir 3 via a conduit 9. By connecting the suction port 13 of the ejector 11 directly to the inside of the jacket portion 2, the connection is made at the shortest distance. The outlet side of the ejector 11 communicates with the upper portion of the jacket portion 2 through a conduit 14. Although only one ejector 11 is illustrated in FIG. 1, a plurality of ejectors are actually attached.

  A branch pipe 15 branched from the discharge side pipe of the circulation pump 10 is arranged, and an upper end thereof is connected to a cooling fluid injection nozzle 16 attached to the entire circumference of the jacket portion 2. A control valve 17 for controlling the amount of cooling fluid to be supplied is attached to the branch pipe 15. Further, a cooling fluid supply pipe 18 for supplying a cooling fluid is connected to the pipe line 9. A control valve 23 for controlling the amount of cooling fluid to be supplied is also attached to the cooling fluid supply pipe 18.

  A temperature sensor 19 for detecting the temperature of the accumulated cooling fluid is attached to the lower end of the cooling fluid reservoir 3 and an excess fluid discharge pipe 20 is connected thereto. An open / close valve 21 is attached to the surplus fluid discharge pipe 20. A pressure sensor 22 that detects the pressure in the jacket portion 2 is attached to the upper portion of the jacket portion 2. Each of the sensors 19 and 22 is electrically connected to the control valves 6, 17 and 23 via a controller (not shown).

  When the object to be cooled in the reaction vessel 1 is cooled, the circulating pump 10 is driven to inject the cooling fluid from the branch pipe 15 and the cooling fluid injection nozzle 16 to the outer surface of the reaction vessel 1 and is generated in the ejector 11. By maintaining the inside of the jacket portion 2 with a suction force in a predetermined pressure state, for example, a vacuum state equal to or lower than the atmospheric pressure, the supplied cooling fluid takes the heat of the reaction kettle 1 and evaporates and evaporates. Evaporate to cool.

The vaporized vapor evaporated in the jacket portion 2 is condensed by the cooling fluid supplied from the cooling fluid injection nozzle 16 or the cooling fluid supplied from the conduit 14 through the ejector 11 to the cooling fluid reservoir 3. Dripping and reaching the circulation pump 10 again. The cooling fluid temperature in the cooling fluid reservoir 3 is arbitrarily controlled by appropriately controlling the replenishment amount from the cooling fluid replenishment pipe 18 or by appropriately controlling the heating degree from the steam pipe 5. Can do.

When the reaction kettle 1 is thus cooled, the entire reaction kettle 1 can be uniformly vaporized and cooled by supplying a cooling fluid having an arbitrary temperature into the jacket portion 2. Further, by cooling and condensing with a part of the cooling fluid for injecting a part of the vaporized steam generated in the jacket part 2, convection of the vaporized steam in the jacket part 2 is promoted, The cooling efficiency of the object to be cooled can be improved.

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 Cooling fluid storage part 5 Steam pipe 9 Pipe line 10 Circulation pump 11 Ejector 15 Branch pipe 16 Cooling fluid injection nozzle 18 Cooling fluid supply pipe 19 Temperature sensor 22 Pressure sensor

Claims (1)

A vaporization cooling chamber for cooling an object to be cooled is formed, and a cooling fluid is supplied to the vaporization cooling chamber, and the vaporization cooling chamber is connected to a suction means to evaporate and cool the object to be cooled. A cooling fluid reservoir for storing a predetermined amount of cooling fluid is formed, and a circulation pump and a plurality of ejectors are sequentially connected to the cooling fluid reservoir, and the suction ports of the plurality of ejectors are located at the shortest distance from the vaporization cooling chamber. An evaporative cooling device characterized in that the outlet side of a plurality of ejectors is connected to an evaporative cooling chamber while being connected.

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