JP2574493Y2 - Decompression evaporative cooling equipment - 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 cooling a cooling object by depressurizing a cooling chamber and vaporizing cooling water.
In particular, it relates to cooling water injection means. As the reduced-pressure evaporative cooling device, cooling of various reaction vessels for performing polymerization, condensation, and the like,
Alternatively, there is a food drying device or the like.

[0002]

2. Description of the Related Art As a conventional reduced-pressure evaporative cooling device, there is an evaporative cooling device for a reactor shown in FIG. In the figure, reference numeral 1 denotes a reaction vessel as an object to be cooled, which has a raw material inlet 2, a product outlet 3, and a stirrer 4. Outside the reaction vessel 1, a jacket portion 5 is formed as a vaporization cooling chamber. A cooling water supply pipe 6 for supplying cooling water is connected to the jacket 5, and a fluid discharge port 7 is provided below the jacket 5 and connected to a vacuum pump 8.

When the reactor 1 is cooled, the inside of the jacket portion 5 is reduced to a predetermined pressure by a vacuum pump 8, and cooling water is supplied from a cooling water supply pipe 6, whereby the cooling water evaporates to perform evaporative cooling. . The vaporized vapor and the cooling water that cannot be vaporized are sucked and discharged from the fluid discharge port 7 by the vacuum pump 8.

[0004]

The above-mentioned conventional evaporative cooling apparatus has a problem that it cannot exert a sufficient cooling effect.
The vaporized vapor in the cooling chamber is convected by suction by the vacuum pump to continuously vaporize and cool.However, sufficient convection cannot be obtained only by the vacuum pump, i.e., the vaporized vapor enters the cooling chamber. This is because the fuel is filled and new vaporization is not performed promptly, and the efficiency of vaporization cooling decreases. If a vacuum pump having a sufficiently large suction capacity is provided, convection can be obtained satisfactorily, but the pump itself has to be expensive and the running cost of the pump is high, which is not practical.

[0005] Therefore, a technical problem of the present invention is to increase the convection of vaporized vapor in a cooling chamber to increase the efficiency of vaporization and cooling.

[0006]

The structure of the reduced-pressure evaporative cooling device according to the present invention is as follows. A vaporization cooling chamber is formed in contact with the object to be cooled, and cooling water is injected into the vaporization cooling chamber and the pressure is reduced by a vacuum pump to evaporate and cool the object to be cooled. A cooling water reservoir is formed for storing the cooling water, and a cooling water injection portion is formed at least on the side of the cooling water reservoir to be cooled, and the cooling water is supplied to the object to be cooled via the cooling water injection portion of the cooling water reservoir. Things.

[0007]

The cooling water is injected from the cooling water injection section into the vaporizing cooling chamber, whereby the cooling water is vaporized and the object to be cooled is cooled by the latent heat of evaporation. The vaporized vapor accumulates in the evaporative cooling chamber, but forms a condensed water by being cooled by contacting the evaporative cooling water reservoir by forming the cooling water reservoir in the evaporative cooling chamber. The condensed water is dropped by its own weight, sucked by a vacuum pump and discharged out of the system. The vaporized steam is condensed in the cooling water reservoir, so that the convection of the steam is increased.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In this embodiment, an example in which a reactor is used as an object to be cooled will be described. FIG.
In the reaction vessel 11, the raw material inlet 12, the product outlet 13,
A stirrer 14 is provided, and a jacket portion 15 as an evaporative cooling chamber is formed outside the stirrer 14. The fluid outlet 7 is provided at a lower portion of the jacket portion 15, and a cooling water reservoir 20 is provided at an upper portion inside the jacket portion 15. The cooling water sump 20
A cylindrical inner plate 21, an outer plate 22, and a hollow disk-shaped lower plate 23;
Thus, the cooling water storage chamber 25 is formed. A cooling water supply hole 26 is provided in the upper part of the cooling water storage chamber 25 so as to penetrate a part of the jacket portion 15, and a cooling water supply pipe 27 is connected thereto. On the inner plate 21 and the lower plate 23, nozzles 30, 31, and 32 are formed as cooling water injection units for injecting the supplied cooling water to the outer surface of the reaction vessel 11. The fluid discharge hole 7 is connected to a vacuum pump 18 via a valve 17.

When cooling the reactor 11, cooling water is supplied from the cooling water supply pipe 27 to the cooling water storage chamber 25. Part of the water accumulated in the cooling water storage chamber 25 is supplied to the nozzles 30, 31, 32.
And is sprayed on the outer surface of the reaction vessel 11. The inside of the jacket portion 15 is kept in a predetermined vacuum state by a vacuum pump 18, and the cooling water supplied to the reaction vessel 11 removes its heat and is vaporized, thereby vaporizing and cooling the reaction vessel 11. The vaporized vapor collects mainly in the upper portion of the jacket portion 15.
The vaporized vapor accumulated at the upper portion mainly contacts the surfaces of the outer plate 22 and the inner plate 21 of the cooling water reservoir 20 and becomes condensed water again by being cooled, and drops down in the jacket portion 15. The dropped water is sucked by a vacuum pump 18 via a valve 17 and discharged out of the system. The steam vaporized in the jacket portion 15 is condensed in the cooling water storage portion 20,
The convection of steam is accelerated.

[0010]

As described above, according to the present invention, the convection of the vapor in the vaporization cooling chamber can be accelerated by cooling and condensing the vaporized vapor in the cooling water reservoir, and the efficiency of vaporization cooling can be improved. Can be increased.

[0011]

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional configuration view of an embodiment of a reduced pressure evaporative cooling device of the present invention.

FIG. 2 is a configuration diagram showing an example of a conventional reduced pressure evaporative cooling device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Reaction pot 15 Jacket part 18 Cooling water injection nozzle 20 Cooling water storage part 21 Inner plate 22 Outer plate 23 Lower plate 25 Cooling water storage room 27 Cooling water supply pipe 30, 31, 32 Nozzle

Claims (1)

(57) [Scope of request for utility model registration] An evaporative cooling chamber is formed in contact with an object to be cooled,
Injecting cooling water into the evaporative cooling chamber and reducing the pressure with a vacuum pump to evaporate and cool the object to be cooled, forming a cooling water reservoir for storing the cooling water injected into the evaporative cooling chamber; A cooling water injection section is formed at least on the side of the object to be cooled, and the cooling water injection section of the cooling water storage section is connected to the cooling water injection section.
A reduced pressure evaporative cooling device characterized by supplying cooling water to a cooled object.