JPH07163892A - Heating cooling apparatus - Google Patents

Abstract

PURPOSE:To provide a heating cooling apparatus, with which thermal damage of an objective article to be cooled can be prevented, by eliminating cooling unevenness by making a cooling fluid to be evaporated adhere uniformly to the whole body of a heat exchanger. CONSTITUTION:A jacket part 2 is formed in the area covering the whole circumference of a reaction furnace 1. A spiral cooling fluid supplying pipe 5 and fluid collecting plates 9 are installed in the jacket part 2. Nozzles 15, 16 are attached above the cooling fluid supplying pipe 5 and the fluid collecting plates. The nozzle 15, 16 are connected with a compressed air supplying pipe 6. A vacuum pump 22 is connected with the lower part of the jacket part 2 through a steam trap 13 and a valve 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to heating and cooling an object to be heat-treated in a heat exchanger, and in particular, heating the chamber at a relatively low temperature of about 100 degrees C. The present invention relates to a heating and cooling device that evaporates and cools an object to be cooled by the latent heat of vaporization of a cooling fluid. Specifically, it is used for heating and cooling various reaction kettles, foods, medical products, pharmaceuticals, and the like.
These objects to be cooled often cause thermal damage due to a slight temperature rise, and therefore it is necessary to cool the whole uniformly and accurately.

[0002]

2. Description of the Related Art As a conventional heating and cooling device, for example, Japanese Patent Laid-Open No.
What was shown by the 3-189763 gazette was used. This is to supply and heat the vaporized heat medium into the jacket chamber, to provide a heat exchange device and a liquid collecting and rectifying device in the jacket chamber, and to condense the vaporized heat medium in the jacket chamber by the heat exchange device. The condensing heat medium is made to flow into the outer wall surface of the cooling container as uniformly as possible in the form of a film or droplets by a liquid collecting and rectifying device, and the condensing heat medium is evaporated and cooled by the latent heat of vaporization.

[0003]

Although the above-mentioned conventional evaporative cooling apparatus can evaporatively cool relatively uniformly,
There was a problem that the condensation heat medium could not be partially adhered to the outer wall of the container and the object to be cooled was partially damaged by heat. This is because the condensation heat medium generated by cooling in the heat exchange device is caused to flow down from the liquid collecting and rectifying device to the outer wall of the container only by gravity flow. The surface condition of the outer wall of the container changes due to the adhesion and oxidation of foreign matter over the period of use, and the evaporation amount of the condensation heat medium also changes depending on the temperature of the object to be cooled in the container. Uneven cooling is partially caused and heat damage is caused.

Therefore, a technical problem of the present invention is to uniformly vaporize and cool the vaporized cooling fluid to the entire container so that the vaporized and cooled fluid can be more uniformly vaporized and prevent partial heat damage of the object to be cooled. .

[0005]

The constitution of the heating / cooling device of the present invention is as follows. A heat exchanger, a heat exchange chamber that covers substantially the entire circumference of the heat exchanger, a heating / cooling fluid pipe for supplying a heating / cooling fluid to the heat exchange chamber, and a liquid collecting plate below the cooling fluid pipe. In addition, a suction means for maintaining the heat exchange chamber in a decompressed state is connected to a cooling fluid pipe and a compressed air supply pipe for supplying compressed air in the vicinity of the liquid collecting plate.

[0006]

The heat exchange chamber is maintained in a depressurized state by driving the suction means, and the heating fluid such as heating steam is supplied to the heat exchange chamber from the heating fluid pipe. By supplying the cooling fluid to the cooling fluid pipe, the heated steam on the outer periphery of the cooling fluid pipe is condensed to become a liquid and reaches the liquid collecting plate. By connecting the compressed air supply pipe near the cooling fluid pipe and the liquid collecting plate, the liquid condensed in the cooling fluid pipe reaches the liquid collecting plate immediately, so that the amount of condensed liquid increases and the liquid is compressed from the liquid collecting plate. By virtue of the large amount of liquid flowing down by the air, the cooling liquid can be supplied more uniformly throughout the heat exchanger.

The cooling fluid uniformly supplied to the entire heat exchanger takes heat of the object to be cooled, evaporates and vaporizes. The vaporized vapor is sucked by the suction means and removed from the heat exchange chamber. On the other hand, when the heat exchanger is heated, the supply of the cooling fluid is stopped so that it can be heated by the heating steam supplied from the heating fluid pipe. Also in this case, condensate as condensed water generated by heating is sucked by the suction means and discharged to the outside.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The illustrated embodiment will be described in detail. In this embodiment, an example in which the reaction kettle 1 is used as the heat exchanger is shown.
The reaction vessel 1, the jacket portion 2 as a heat exchange chamber, the vacuum pump 22 as a suction means, the heating fluid supply pipe 7, the cooling fluid supply pipe 11, and the compressed air supply pipe 6 constitute a reduced pressure evaporative cooling device. .

The reactor 1 has been used conventionally, and a jacket portion 2 is provided on almost the entire circumference, and a heating fluid supply pipe 7 is connected above the jacket portion 2. In the jacket portion 2, a part of the cooling fluid supply pipe 11 is connected via a pipe 21 and a spiral cooling fluid supply pipe 5 is arranged from the lower side to the upper side. A spiral liquid collecting plate 9 is attached to the lower part of the spiral cooling fluid supply pipe 5. Both the spiral cooling fluid supply pipe 5 and the liquid collecting plate 9 are attached at a distance from the outer surface of the reaction vessel 1. The outlet of the spiral cooling fluid supply pipe 5 is connected to the pipe 3.

The nozzle portion 1 is further provided above the jacket portion 2.
The compressed air supply pipe 6 is connected via 5 and 16. The nozzle portions 15 and 16 are arranged above the spiral cooling fluid supply pipe 5 and the liquid collecting plate 9 so that compressed air can be blown to them. In the drawing, two nozzle parts 15 and 16 are shown.
However, the number can be increased or decreased as needed.

The lower part of the jacket portion 2 is connected to the steam trap 13 and the valve 8 via a pipe 30, and further the vacuum pump 2
Connect with 2. The vacuum pump 22 includes an ejector 25 including a nozzle portion 23 and a diffuser 24, and a tank 26.
And a centrifugal pump 27. The lower portion of the tank 26 is connected to the suction port of the centrifugal pump 27, and the discharge port is connected to the nozzle portion 23 of the ejector 25. This ejector type vacuum pump 22 swirls the fluid in the tank 26
The suction force is generated in the nozzle portion 23 by circulating it in 7 and passing it to the nozzle portion 23. An excess liquid discharge passage 29 is connected via a valve 28 to a circulation passage that is connected to the discharge port of the spiral pump 27. A supply pipe 33 branched from the cooling fluid supply pipe 11 is connected to the tank 26.

Next, the operation will be described. When the reaction kettle 1 is cooled, a heating fluid such as heating steam is supplied from the heating fluid supply pipe 7 into the jacket portion 2, and the vacuum pump 22 is used.
The cooling fluid and the compressed air are simultaneously supplied into the jacket portion 2 from the cooling fluid supply pipe 11 and the compressed air supply pipe 6 while driving. The heating fluid is condensed around the cooling fluid supply pipe 5 by the cooling fluid and drops on the liquid collecting plate 9. In this case, the compressed air is supplied from the nozzle portions 15 and 16 through the compressed air supply pipe 6, so that the amount of the liquid to be condensed increases, and the large amount of the condensed liquid flows from the liquid collecting plate 9 to the outer surface of the reaction vessel 1. By vigorously spraying the condensed liquid of No. 1, the condensed liquid can be uniformly attached to the entire surface of the reaction vessel 1.

The reaction vessel 1 can be cooled by the latent heat of vaporization caused by the uniformly adhered condensed liquid absorbing the heat of the reaction vessel 1 and evaporating. Then, the vaporized vapor and the rest of the condensed liquid by cooling are sucked into the ejector 25 through the valve 8 and the steam trap 13.

When heating the reaction kettle 1, by stopping the supply of the cooling fluid to the spiral cooling fluid supply pipe 5,
It can be heated by the heating steam supplied from the heating fluid supply pipe 7. Also in this case, the condensed water generated by heating is sucked into the ejector 25 through the steam trap 13.

[0015]

According to the present invention, more compressed liquid is generated in the cooling fluid pipe by connecting the compressed air supply pipe near the cooling fluid pipe and the liquid collecting plate to supply compressed air. At the same time, this large amount of condensed liquid can be vigorously supplied uniformly from the liquid collecting plate to the entire heat exchanger by the compressed air, and the entire heat exchanger can be cooled evenly and partially. It is possible to prevent heat damage.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of a heating / cooling device of the present invention.

[Explanation of symbols]

 1 Reactor 2 Jacket 5 Spiral Cooling Fluid Supply Pipe 6 Compressed Air Supply Pipe 7 Heating Fluid Supply Pipe 9 Liquid Collection Plate 11 Cooling Fluid Supply Pipe 13 Steam Trap 15, 16 Nozzle Part 22 Vacuum Pump 23 Nozzle Part 25 Ejector 26 tank 27 centrifugal pump

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location F28D 5/00 7/02

Claims (1)

[Claims] 1. A heat exchanger, a heat exchange chamber that covers substantially the entire circumference of the heat exchanger, a heating / cooling fluid pipe for supplying a heating / cooling fluid to the heat exchange chamber, and a collection unit at the lower portion of the cooling fluid pipe. In addition to installing a liquid plate and suction means for maintaining the heat exchange chamber in a depressurized state, a cooling fluid pipe and a compressed air supply pipe for supplying compressed air to the vicinity of the liquid collection plate are connected. Heating and cooling device.