JP4964656B2 - Evaporative cooling device - Google Patents

Description

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

  The evaporative cooling device has a cooling fluid line connected to the evaporative cooling chamber and a cooling chamber connected to the suction means, and can evaporate and cool a cooling object with latent heat of vaporization of the cooling fluid.

In this evaporative cooling device, the cooling fluid supplied to the evaporative cooling chamber cannot uniformly adhere to the entire outer surface of the evaporative cooling chamber, and the entire evaporative cooling chamber cannot be uniformly evaporatively cooled. There was a problem.
Japanese Utility Model Publication No. 5-37181

  The problem to be solved is to provide an evaporative cooling device that can uniformly evaporate and cool the entire evaporative cooling chamber by supplying a cooling fluid uniformly to the entire outer surface of the evaporative cooling chamber.

  The present invention forms a cooling chamber for cooling an object to be cooled, connects a cooling fluid supply pipe for supplying a cooling fluid in a tangential direction of the outer wall surface of the cooling chamber, and connects the cooling chamber to suction means , A plurality of nozzles for injecting cooling fluid are attached to the cooling chamber side end of the cooling fluid supply pipe, and the nozzles are formed by at least three cooling fluid injection ports, and one cooling fluid injection port is cooled. Boundary portion for supplying a cooling fluid to a boundary portion of the cooling fluid sprayed from the plurality of cooling fluid spray ports as a cooling fluid spray port for spraying the cooling fluid in a tangential direction of the outer wall surface of the chamber This is a cooling fluid injection port.

  The evaporative cooling device of the present invention has a cooling fluid spray nozzle and a boundary portion cooling fluid spray port formed in the cooling fluid spray nozzle, so that the boundary portion of the cooling fluid supplied from the cooling fluid spray port, that is, the cooling fluid spray port. The cooling fluid can be supplied from the boundary cooling fluid injection port to the boundary where the cooling fluid cannot reach, and the cooling fluid can be supplied to the entire outer surface of the cooling chamber evenly. The entire chamber can be uniformly vaporized and cooled.

  In the present invention, the cooling fluid spray nozzle and the boundary portion cooling fluid spray port are formed in the cooling fluid spray nozzle, but the cooling fluid spray port and the boundary portion cooling fluid spray port are integrally formed in one nozzle. Alternatively, a separate cooling fluid spray port and a boundary cooling fluid spray port may be combined into a single nozzle.

In the present embodiment, an example in which the jacket portion 2 of the reaction kettle 1 is used as a 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 of the reaction kettle 1, and a combined vacuum pump 4 as a suction means and a cooling fluid supply pipe 5 are connected to the jacket portion 2. The cooling fluid supply pipe 5 is connected to a cooling fluid pipe 6 disposed in the jacket portion 2 via an ejector 18 serving as a heat exchange portion.

The ejector 18 is disposed at a position as close as possible to the jacket portion 2, and a heating steam supply pipe 19 is connected to the suction port of the ejector 18. The cooling fluid supplied from the cooling fluid supply pipe 5 and the heating steam supplied from the steam supply pipe 19 are mixed in the ejector 18, controlled to a predetermined temperature, and supplied to the cooling fluid pipe 6. The

By disposing the ejector 18 in the vicinity of the jacket portion 2, the cooling fluid can be supplied to the cooling fluid conduit 6 until the temperature of the cooling fluid controlled to a predetermined temperature by the ejector 18 changes. 2 can be supplied with a cooling fluid controlled with high temperature accuracy.

As shown in FIG. 2, the end portion of the cooling fluid pipe 6 disposed in the jacket portion 2 is a nozzle 25, and the nozzle 25 is formed by three cooling fluid injection ports 27, 28, 29. 29 is a cooling fluid spraying port 29 that sprays the cooling fluid in the tangential direction of the outer wall surface of the reaction vessel 1, and the upper boundary portion cooling fluid injection port 27 that supplies the cooling fluid to the upper portion 35 of the boundary portion. Furthermore, the cooling fluid injection port 28 is a lower boundary portion cooling fluid injection port 28 that supplies the cooling fluid to the lower portion 36 of the boundary portion.

The cooling fluid is sprayed from the cooling fluid spray port 29 as shown by a straight line 30 in FIG. 2, while the cooling fluid is sprayed from the upper and lower boundary cooling fluid jet ports 27 and 28 as shown by straight lines 31 and 32. Be injected. FIG. 2 schematically shows the supply of the cooling fluid. The cooling fluid is supplied from the cooling fluid spray port 29 to the regions 33 and 34 on the outer surface of the reaction kettle 1, while the upper and lower regions 35 and 34 are supplied. A state in which the cooling fluid is supplied from the boundary cooling fluid ejection ports 27 and 28 to the 36 portion is shown.

  In FIG. 1, the lower part of the cooling fluid supply pipe 5 is connected to a part of the circulation path 15 of the combination vacuum pump 4, and the upper part is connected to one end of the cooling fluid pipe 6. The cooling fluid pipe 6 is arranged in a spiral shape in the jacket portion 2, and a plurality of cooling fluid injection nozzles 25 are attached to the reaction kettle 1 side of the cooling fluid pipe 6 as shown in FIG. 2.

  In this embodiment, a steam supply pipe 8 with a flow rate adjusting valve 7 interposed is connected to the upper left portion of the jacket portion 2. By supplying the steam for heating at a predetermined pressure, that is, a predetermined temperature from the steam supply pipe 8 to the jacket part 2, the object to be heated in the reaction kettle 1 can be heated.

  A discharge pipe 9 is connected to the lower right side of the jacket portion 2 and connected to the ejector 10 of the combination vacuum pump 4. An open / close valve 11 and a gas-liquid separator 12 are attached to the discharge pipe 9. The gas-liquid separator 12 can separate the vapor and the liquid flowing down from the discharge pipe 9, respectively, and the separated vapor is sucked into the vapor ejector 3, while the separated liquid is a pipe line. 20 is sucked through the lower ejector 10.

  The steam ejector 3 has an inlet side connected to a branch pipe 21 branched from the steam supply pipe 8, and the outlet side is again connected to the front side of the flow rate control valve 7 of the steam supply pipe 8 by a conduit 22. A part of the steam in the jacket part 2 flowing down from the pipe 9 is sucked by the steam ejector 3 and supplied again from the steam supply pipe 8 to the jacket part 2, thereby heating steam in the jacket part 2. It can be forced to circulate.

  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 to connect the excess water discharge pipe 17 and the above-described cooling fluid supply pipe 5. The cooling fluid supply pipe 5 can evaporate and cool the reaction kettle 1 by supplying a part of the circulating fluid circulating through the combination vacuum pump 4 to the cooling fluid pipe 6 of the jacket portion 2.

The left side surface of the jacket portion 2 is connected to the ejector 10 of the combination vacuum pump 4 via a pipe line 23 and an on-off valve 24. The conduit 23 is for sucking vaporized vapor of the cooling fluid generated in the jacket portion 2 to the ejector 10.

  When the object to be cooled in the reaction kettle 1 is cooled, the cooling fluid controlled to a predetermined temperature is supplied from the cooling fluid supply pipe 5 and the ejector 18 into the cooling fluid pipe 6, and the inside of the cooling fluid pipe 6 is supplied. At the same time as filling with the cooling fluid, the cooling fluid is sprayed to the outer surface of the reaction kettle 1 from a plurality of cooling fluid jet nozzles 25 provided on the reaction kettle 1 side of the cooling fluid conduit 6. The injected cooling fluid is sprayed from the cooling fluid spraying port 29 in the tangential direction of the outer wall surface of the reaction kettle 1 and supplied to the region 33, and at the same time from the upper and lower boundary cooling fluid spraying ports 27 and 28 to the regions 35 and 36. Is supplied to the entire outer surface of the reaction kettle 1 evenly.

On the other hand, the circulation pump 14 of the combination vacuum pump 4 in FIG. 1 is driven, and a predetermined pressure state, for example, a large pressure is generated in the jacket portion 2 through the discharge pipe 9 or the conduit 23 by the suction force generated by the ejector 10. By setting the vacuum state below atmospheric pressure, the cooling fluid sprayed to the outer surface of the reaction vessel 1 takes the heat of the object to be cooled in the reaction vessel 1 and evaporates to evaporate. Can be vaporized and cooled.

When the reaction kettle 1 is cooled in this way, the cooling fluid is uniformly supplied from the cooling fluid injection nozzle 25 of the cooling fluid pipe 6 to the entire outer surface of the reaction kettle 1, so that the entire reaction kettle 1 is Evaporation and cooling can be performed uniformly.

  The vaporized vapor of the cooling fluid that has cooled the object to be cooled by the jacket portion 2 and part of the cooling fluid that could not be vaporized are sucked into the ejector 10 through the discharge pipe 9 or the pipe line 23 and reach the tank 13.

  Since the suction force that can be generated in the ejector 10 is determined by the temperature of the fluid flowing down the ejector 10, the cooling water having a predetermined temperature is appropriately supplied from the cooling water supply pipe 16 to the tank 13, thereby causing the ejector 10 to flow down. 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. The schematic diagram of the reaction kettle 1 outer surface in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Reaction kettle 2 Jacket part 4 Suction means 5 Cooling fluid supply pipe 6 Cooling fluid pipe 9 Discharge pipe 10 Ejector 13 Tank 14 Circulation pump 15 Circulation path 25 Nozzle 27 Upper boundary cooling fluid injection port 28 Lower boundary cooling fluid injection port 29 Cooling fluid spray port

Claims (1)

A cooling chamber that cools an object to be cooled is connected to a cooling fluid supply pipe that supplies a cooling fluid in a tangential direction of the outer wall surface of the cooling chamber, and the cooling chamber is connected to a suction means. A plurality of nozzles for injecting cooling fluid are attached to the cooling chamber side end of the supply pipe, and the nozzles are formed by at least three cooling fluid injection ports, and one cooling fluid injection port is connected to the outer wall surface of the cooling chamber. A cooling fluid spray port that sprays the cooling fluid in the tangential direction of the boundary, and the remaining cooling fluid spray ports supply the cooling fluid to the boundary portions of the cooling fluid sprayed from the plurality of cooling fluid spray ports An evaporative cooling device characterized by that.

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