JP2006349250A - Evaporative cooling device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an evaporative cooling device capable of reducing its cost by dispensing with a cooling fluid nozzle independently mounted. <P>SOLUTION: A cooling fluid chamber 3 is formed at an outer periphery of a jacket portion 2 of a reaction vessel 1. A cooling fluid supply pipe 5 is connected with the cooling fluid chamber 3. A lower combination vacuum pump 4 is connected through a discharge pipe 9 of the jacket portion 2. A slit-shaped spray hole 23 for injecting cooling fluid into the jacket portion 2 is directly formed on an outer wall of the jacket portion 2. When the reaction vessel 1 is cooled, the cooling fluid is stored in the cooling fluid chamber 3 and injected to the jacket portion 2 from the spray hole 23, thus the reaction vessel 1 is evaporated and cooled by evaporative latent heat of cooling fluid. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vaporization cooling apparatus that vaporizes and cools an object to be cooled by the latent heat of vaporization of a cooling fluid to be supplied with a jacket portion in a pressure state of about atmospheric pressure or lower than atmospheric pressure.

  The evaporative cooling device includes a cooling unit that stores cooling fluid on the outer periphery of a jacket portion, and a cooling fluid nozzle that injects the cooling fluid into the jacket portion from the cooling unit, and is heated by the cooling fluid that is injected from the cooling fluid nozzle. The entire exchange chamber can be uniformly cooled, and the vaporized vapor is cooled and condensed in the cooling part on the outer periphery of the jacket part, thereby promoting the convection of vaporized steam in the jacket part and evaporative cooling efficiency. Can be improved.

In this evaporative cooling device, there is a problem that the cost of the device itself increases due to the arrangement of the cooling fluid nozzle. In particular, when the heat exchange chamber is large, many cooling fluid nozzles must be attached, which further increases the cost.
Japanese Utility Model Publication No. 4-78475

  The problem to be solved is to provide an inexpensive evaporative cooling device by eliminating the need for separately attaching a cooling fluid nozzle.

  In the present invention, a jacket portion is formed on the outer periphery of a heat exchange chamber for cooling an object to be cooled, and a cooling fluid supply source and suction means are communicated with the jacket portion, and the object to be cooled is vaporized and cooled by the latent heat of vaporization of the cooling fluid. The cooling fluid supply part for supplying the cooling fluid from the cooling fluid supply source to the jacket part is formed directly on the outer wall of the jacket part, and the cooling fluid supply part is formed by a slit-like spray hole. is there.

  In the vaporization cooling apparatus of the present invention, it is necessary to separately attach an expensive cooling fluid nozzle by forming the cooling fluid supply part for supplying the cooling fluid from the cooling fluid supply source to the jacket part directly on the outer wall of the jacket part. And an inexpensive evaporative cooling device.

  In the present invention, the cooling fluid supply part is formed directly on the outer wall of the jacket part. This cooling fluid supply part is provided at one or a plurality of places corresponding to the heat exchange chambers that require cooling. Can do.

  In this embodiment, as shown in FIG. 1, an example using a reaction kettle 1 that performs cooling as a heat exchange chamber is shown. An object to be cooled (not shown) placed inside the reaction kettle 1 is vaporized and cooled by a cooling fluid, for example, cooling water, supplied to the jacket portion 2.

  A jacket portion 2 is formed over almost the entire circumference of the reaction kettle 1, and a cooling fluid chamber 3 is formed on the outer periphery of the jacket portion 2. A cooling fluid supply pipe 5 is connected to the upper left part of the cooling fluid chamber 3. A flow rate adjusting valve 6 for controlling the amount of fluid is attached to the cooling fluid supply pipe 5.

  In this embodiment, a steam supply pipe 8 with a flow rate adjusting valve 7 interposed is connected to the upper left part of the jacket portion 2. By supplying steam for heating at a predetermined pressure, that is, temperature, from the steam supply pipe 8 to the jacket portion 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 an ejector 10 of the combination vacuum pump 4 as a suction means. A steam trap 11 and a bypass valve 12 are attached to the discharge pipe 9 in parallel. The steam trap 11 causes only the condensate produced by the condensation of steam in the jacket portion 2 to flow down to the ejector 10.

  The ejector 10, the tank 13, and the circulation pump 14 are sequentially communicated through the circulation path 15 to form the combined vacuum pump 4. 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 and the circulation fluid supply pipe 18 are connected to each other. The circulating fluid supply pipe 18 can also use the circulating fluid as a cooling fluid by supplying a part of the circulating fluid circulating through the combination vacuum pump 4 to the cooling fluid chamber 3.

A slit-like spray hole 23 as a cooling fluid supply part as shown in FIG. 2 is directly formed in the outer wall 22 of the jacket part 2. The spray hole 23 shown in FIG. 2 is formed by forming a plurality of fine holes elongated in the horizontal direction on the entire circumference of the outer wall 22. Thus, by forming the slit-shaped spray hole 23 directly on the outer wall 22 of the jacket portion 2, it is not necessary to separately attach an expensive cooling fluid injection nozzle, and the vaporization cooling device can be made inexpensive. .

When the object to be cooled in the reaction kettle 1 is cooled, the cooling fluid is supplied from the cooling fluid supply pipe 5 into the cooling fluid chamber 3 to fill the cooling fluid chamber 3 with the cooling fluid, and at the same time from the spray hole 23. Cooling fluid is injected into the jacket portion 2. Furthermore, the circulation pump 14 is driven to bring the inside of the jacket portion 2 into a predetermined pressure state, for example, a vacuum state below atmospheric pressure, by the suction force generated by the ejector 10, so that the spray is injected from the spray hole 23 to the jacket portion 2. The cooled cooling fluid 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.

When the reaction kettle 1 is cooled in this way, a part of the vaporized vapor generated by the vaporization cooling in the jacket part 2 is cooled and condensed by a part of the cooling fluid ejected from the spray hole 23, and at the same time, the jacket part 2 Even in the cooling fluid accumulated in the cooling fluid chamber 3 on the outer periphery, the convection of the vaporized vapor in the jacket part 2 is promoted by cooling and condensing a part of the vaporized vapor in the jacket part 2 to be cooled. The cooling efficiency can be improved.

  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 valve 12 and the vapor trap 11 and reach 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.

  When heating a heat exchange object (not shown) in the reaction kettle 1, the steam is supplied to the jacket 2 by supplying steam at a temperature suitable for heating from the steam supply pipe 8 to the heated object in the reaction kettle 1. Heat with heat. Condensate condensed with steam by heating is sucked into the ejector 10 through the discharge pipe 9 and the steam trap 11 and reaches the tank 13.

  In the present embodiment, the cooling fluid chamber 3 is provided on the outer periphery of the jacket portion 2, and the cooling fluid is injected from the cooling fluid chamber 3 through the slit-like spray holes 23 to the jacket portion 2. The cooling fluid supply pipe 5 is branched and directly connected to the spray hole 23, whereby the cooling fluid chamber 3 can be omitted.

  In the present embodiment, the slit-shaped spray hole 23 has a shape that is long in the horizontal direction. However, other shapes, for example, a shape that is long in the oblique direction may be used.

The block diagram which shows the Example of the vaporization cooling device of this invention. The partial expanded sectional view of the outer wall of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Reaction kettle 2 Jacket part 3 Cooling fluid chamber 4 Combination vacuum pump 5 Cooling fluid supply pipe 6 Flow control valve 9 Discharge pipe 10 Ejector 11 Steam trap 13 Tank 14 Circulation pump 22 Outer wall 23 Spray hole

Claims (1)

A jacket part is formed on the outer periphery of the heat exchange chamber for cooling the object to be cooled, and a cooling fluid supply source and suction means are communicated with the jacket part to evaporate and cool the object to be cooled by the latent heat of vaporization of the cooling fluid. A cooling fluid supply unit for supplying a cooling fluid from a cooling fluid supply source to the jacket part is formed directly on the outer wall of the jacket part, and the cooling fluid supply part is formed by a slit-like spray hole. Cooling system.

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