JP3203407B2 - Decompression evaporative cooling system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for evaporating and cooling an object to be cooled by evaporating supplied cooling water by reducing the pressure in a jacket chamber, and more particularly, to uniformly cooling water to the outer surface of a container to be cooled. Regarding what can be supplied. The reduced-pressure evaporative cooling device is used for cooling foods, medical products, various reaction vessels, molds, and the like.

[0002]

2. Description of the Related Art An example of a conventional vacuum evaporative cooling apparatus is disclosed in Japanese Utility Model Laid-Open Publication No. 4-87737. This is provided with an on-off valve in a cooling water supply pipe connected to a jacket portion as a vaporizing cooling chamber, and provided with intermittent driving means for intermittently opening and closing this on-off valve, and opening and closing the on-off valve intermittently. This prevents the pressure drop of the cooling water, makes the discharge state of the cooling water uniform, enables the cooling water to be uniformly supplied to the jacket portion, and prevents the cooling unevenness.

[0003]

However, in the above-mentioned conventional vacuum evaporative cooling apparatus, there is a problem that the cooling water cannot be supplied uniformly to the surface of the container to be cooled, resulting in uneven cooling. In particular, when the shape of the container to be cooled is not planar but has an uneven portion, the cooling water is not supplied partially, resulting in uneven cooling. In reduced pressure evaporative cooling, it is possible to supply cooling water uniformly to the surface of the object to be cooled,
This is essential for uniform cooling, that is, for preventing uneven cooling.

[0004] Therefore, a technical problem of the present invention is that even if the shape of the object to be cooled is uneven such as unevenness, the cooling water can be supplied to the entire object to be cooled uniformly. Thus, it is to prevent cooling unevenness of the object to be cooled.

[0005]

The structure of the reduced pressure evaporative cooling device of the present invention is as follows. A container to be cooled for storing the object to be cooled; a rotating means for rotating the container to be cooled; a cooling water supply nozzle for supplying cooling water to the outer surface of the container to be cooled; The jacket is provided with a jacket portion that hermetically covers the outer periphery and suction means for maintaining the inside of the jacket portion at a desired reduced pressure.

[0006]

By providing the rotating means for rotating the container to be cooled, the cooling water can be supplied from the cooling water supply nozzle to the outer surface of the container to be cooled while rotating the container to be cooled. By appropriately adjusting the rotation speed of the container to be cooled, the amount of water supplied from the nozzle, and the pressure, the cooling water can be uniformly and uniformly supplied to the object to be cooled even if the container has a non-uniform shape such as unevenness. . Cooling water supplied uniformly,
In addition to the fact that the inside of the jacket portion is brought into a desired reduced pressure state by the suction means, heat is taken from the outer periphery of the container to be cooled and vaporized, so that the object to be cooled is cooled by the heat of vaporization. The vaporized vapor or the cooling water remaining without being vaporized is sucked by the suction means and discharged out of the system.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In FIG. 1, a rotatable cooling object container 2 accommodating an object 1 to be cooled.
, The rotating means 3, the jacket 4, the cooling water supply nozzle 5, and the suction means 6 constitute a reduced-pressure evaporative cooling device.

The container 2 to be cooled has a hollow cylindrical shape and accommodates the object 1 to be cooled, and a plurality of fins 36 are vertically mounted on the outer periphery. A guide pipe 7 is fixedly held at the center of the container 2 to be cooled by the center 9 of the upper lid 8 of the jacket 4. Although not shown, the inside of the guide pipe 7 is hollow and serves as a passage for injecting and discharging the article 1 to be cooled. At the lower end of the guide pipe 7, a stirring blade 10 which does not rotate itself is attached. The lower part of the object container 2 has a rotating shaft 11 integrally protruding therefrom, and is connected to a rotating means 3 including a motor 12 and a gear 13.

The jacket 4 is hermetically disposed on the outer periphery of the container 2 to be cooled via a space 15, and a plurality of cooling water supply nozzles 5 are attached to the jacket 4 and the upper lid 8. The number and positions of the cooling water supply nozzles 5 can be appropriately changed according to the type of the object 1 to be cooled. The cooling water supply nozzle 5 is connected to a cooling water supply pipe 17 via a valve 16.

[0010] The suction means 6 is connected to the space 15. The suction means 6 includes an ejector 18, a tank 19, and a circulation pump 20. The ejector 18 is composed of a suction unit 21 having a built-in nozzle and a diffuser 22. The suction part 21 and the space 15 are connected by a passage 23. Diffuser 2
2 is connected to the tank 19, the lower part of the tank 19 is connected to the suction port of the circulation pump 20, and the discharge port is connected to the suction part 21 of the ejector 18. Ejector 18 is tank 1
By circulating the fluid in 9 through the circulation pump 20 and passing it to the suction unit 21, a suction force is generated by the built-in nozzle unit. Although not shown, a liquid level sensor for detecting the liquid level inside the tank 19 and a temperature sensor 25 for detecting the liquid temperature are attached to the tank 19, and the cooling water branched from the cooling water supply pipe 17 is provided at the upper part. Supply pipe 26 to control valve 27
The temperature of the fluid in the tank 19 is maintained at a desired value by the temperature sensor 25 and the control valve 27.

Next, the operation will be described. In order to cool the object to be cooled 1 by cooling the object to be cooled 2, the cooling water supply pipe 17 and the cooling water The cooling water supplied from the supply nozzle 5 injects the heat of the container 2 to be cooled by injecting the cooling water into the container 2 to be cooled and driving the suction means 6 to reduce the pressure in the space 15. The object to be cooled 1 is cooled by vaporization. Since the object to be cooled 2 is rotating, the cooling water is sprayed and supplied uniformly over the entire outer surface of the object to be cooled, thereby uniformly evaporating and evaporating the entire object to be cooled 2, resulting in uneven cooling. Does not occur.
Further, since the object-to-be-cooled 2 itself rotates, the object-to-be-cooled 1 inside is also stirred simultaneously. In this embodiment, since the fixed stirring blade 10 is arranged, the object 1 to be cooled is further efficiently stirred.

The vaporized vapor and a part of the cooling water remaining without vaporization are sucked by the suction section 21 of the suction means 6 and are stored in the tank 19.
Leads to. The cooling temperature can be appropriately set by detecting the temperature of the fluid passing through the suction force of the suction unit 21 with the temperature sensor 25 and controlling the opening and closing of the control valve 27 to supply and adjust the cooling water. .

In the present embodiment, since a plurality of fins 36 are provided on the outer periphery of the container 2 to be cooled, excess cooling water supplied from the cooling water supply nozzle 5 can be used as the fins 3.
By being splashed off from the outer periphery of 6, the object to be cooled 2 can be further uniformly cooled. Further, by providing the plurality of fins 36, the area of the outer surface of the container 2 to be cooled increases, and the object 1 to be cooled can be efficiently cooled.

In this embodiment, an example is shown in which the ejector 18, the tank 19 and the circulation pump 20 are combined as the suction means 6, but a conventionally well-known water ring vacuum pump or the like can be used.

[0015]

According to the present invention, the cooling water is supplied while rotating the container to be cooled, so that the cooling water is uniformly and evenly applied to the surface of the container to be cooled, such as an uneven surface. The cooling object can be supplied, and uneven cooling of the object to be cooled can be prevented.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment of a reduced-pressure evaporative cooling device of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 cooled object 2 cooled object container 3 rotating means 4 jacket section 5 cooling water supply nozzle 6 suction means 7 guide pipe 11 rotating shaft 12 motor 15 space 17 cooling water supply pipe 18 ejector 19 tank 20 circulation pump 21 suction section

Claims (1)

(57) [Claims] An object container for accommodating an object to be cooled, rotating means for rotating the object container, a cooling water supply nozzle for supplying cooling water to an outer surface of the object container to be cooled, A jacket portion that hermetically covers the outer periphery of the container to be cooled,
A reduced-pressure evaporative cooling device comprising suction means for maintaining the inside of the jacket at a desired reduced pressure state.