JP2761697B2 - Evaporative cooling device - 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 vaporizing and cooling an object to be cooled by evaporating cooling water supplied into a cooling chamber. More specifically, the present invention relates to a cooling device for a reaction vessel for performing various reactions, and a vaporizing cooling device for food, medicine, paper, pulp, fiber, and the like.

[0002]

2. Description of the Related Art As a conventional cooling device for a reaction vessel, there is, for example, one disclosed in Japanese Patent Application Laid-Open No. 4-180829.
In this method, a cooling fluid chamber is formed in contact with the cooling vessel, a cooling water supply pipe for supplying cooling water is connected to the fluid chamber, and the fluid chamber is connected to a vacuum pump, and a gap is formed in an outer wall of the cooling vessel. Gas-liquid separation functional polymer membrane is provided through the cooling water supply between the outer wall of the cooling vessel and the gas-liquid separation functional polymer membrane to form a uniform water film all around the cooling vessel. By forming and vaporizing and cooling, cooling unevenness is prevented,
Product quality can be kept constant.

[0003]

In the above-described conventional apparatus, there is a problem that a time delay occurs when the degree of evaporative cooling, that is, the amount of heat transfer is changed. This is because the amount of heat transferred is changed by operating the vacuum pump to change the degree of vacuum in the fluid chamber or by changing the temperature of the supplied cooling liquid. It takes a predetermined time from the operation of the vacuum pump to the actual change in the degree of vacuum of the fluid chamber, and a delay occurs from the adjustment of the coolant temperature to the actual change of the fluid temperature in the fluid chamber. It is.

For example, in a reaction vessel, it is necessary to accurately control the temperature in the course of the reaction, and if a time delay occurs, the reactants may be deteriorated or damaged.

Accordingly, it is an object of the present invention to provide a vaporization cooling apparatus capable of controlling the degree of vaporization cooling, that is, the amount of heat transferred without causing a time delay, and capable of accurately adjusting the cooling temperature. That is.

[0006]

The constitution of the evaporative cooling device of the present invention is as follows. A variable plate capable of adjusting the distance to the surface of the object to be cooled is provided in the vicinity of the surface of the object to be cooled by supplying the cooling liquid to the object to be cooled and cooling the object to be cooled by the heat of vaporization of the cooling liquid. A cooling liquid supply port for supplying a cooling liquid is formed at one end of the variable plate.

[0007]

The cooling liquid is supplied from the cooling liquid supply port to the surface of the object to be cooled, and the cooling liquid removes the heat of the object to be cooled and evaporates to thereby cool the object to be cooled. The amount of heat transferred from the object to be cooled to the cooling liquid changes depending on the thickness of the cooling liquid film formed on the surface of the object to be cooled. That is, when the cooling liquid film is relatively thin, the amount of vaporization of the cooling liquid increases, and the amount of transmitted heat also increases, thereby cooling the object to be cooled. When the cooling liquid film becomes thicker, the amount of vaporization of the cooling liquid is reduced and the amount of transferred heat is also reduced, so that the degree of cooling of the object to be cooled is reduced. Therefore, by operating the variable plate to change the distance from the surface of the cooling object, the amount of the cooling liquid supplied from the cooling liquid supply port is changed, and the thickness of the cooling liquid film formed on the surface of the cooling object is changed. Further, the amount of heat transfer can be controlled by the change. By changing the position of the variable plate, the thickness of the cooling liquid film also changes immediately, and the cooling degree can be changed without a time delay.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In the present embodiment, an example in which a flat heat exchanger is used as the evaporative cooling device will be described. A passage 2 for an object to be cooled is formed inside a flat heat exchanger 1. The object to be cooled can pass through the passage 2 from below to above. The variable plates 3 and 4 are arranged on both outer surfaces of the heat exchanger 1. The variable plates 3 and 4 have one ends 5 and 6 rotatably supported at one end, and the other ends 7 and 8 have a heat exchanger 1.
In the vicinity of the outer surface. The variable plates 3 and 4 can be manually rotated by a handle (not shown), or can be automatically rotated by an actuator such as a motor. The illustrated variable plate 3 has its end 7
Is located closer to the surface of the heat exchanger 1 (distance h), and the end 8 of the variable plate 4 is located slightly away from the surface of the heat exchanger 1 (distance H). Coolant supply ports 9 and 10 for supplying a coolant are arranged above the variable plates 3 and 4. The coolant supply ports 9 and 10 are connected to a coolant pipe 13 via valves 11 and 12. It is desirable that the valves 11 and 12 can be fully opened and fully closed and can adjust the valve opening.

In order to cool the object to be cooled in the passage 2 by vaporizing and cooling the heat exchanger 1, the valves 11 and 12 are opened and the coolant is supplied from the coolant supply ports 9 and 10 to the heat exchanger 1. Feed on the surface. In this case, in the illustrated state, the thickness of the cooling liquid flowing down from the variable plate 3 is small, and the thickness of the cooling liquid flowing down from the variable plate 4 is large. The cooling liquid located on the heat exchanger 1 takes away the heat of the object to be cooled in the passage 2 and evaporates to cool the object to be cooled. The vaporized vapor is released into the atmosphere. The amount of heat transferred to the heat exchanger 1 can be changed without time delay by changing the thickness of the cooling liquid film formed on the heat exchanger 1 via the variable plates 3 and 4.

In this embodiment, an example is shown in which a flat heat exchanger 1 is used as the evaporative cooling device. However, the heat exchanger is not limited to a flat heat exchanger, and may be, for example, a cylindrical heat exchanger or a roll heat exchanger. Alternatively, a conventionally known heat exchanger having a conical shape or a square shape can be used. In addition, a heat exchanger that accommodates a predetermined amount of the object to be cooled and intermittently cools the object can be used instead of the object to be cooled.

Further, in this embodiment, an example in which the vaporized vapor of the cooling liquid is diffused into the atmosphere has been shown. The vapor can be sucked by a suction pump communicating with the chamber and discharged to a predetermined place.

Further, in this embodiment, an example has been shown in which the ends of the cooling liquid pipe 13 are formed as the cooling liquid supply ports 9 and 10. However, a cooling liquid reservoir is formed above the variable plates 3 and 4 to form the cooling liquid. Can also be supplied.

[0013]

The present invention has the following effects. By moving the variable plate, the thickness of the cooling liquid film can be adjusted, and the amount of heat transferred can be changed without a time delay, thereby preventing deterioration and damage of the object to be cooled and cooling accurately. be able to.

[Brief description of the drawings]

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat exchanger 2 Passage 3,4 Variable plate 9,10 Coolant supply port 11,12 Valve 13 Coolant pipe

Claims (1)

(57) [Claims] A cooling liquid is supplied to an object to be cooled, and the object to be cooled is cooled by the heat of vaporization of the cooling liquid. The distance to the surface of the object to be cooled is adjusted near the surface of the object to be cooled. An evaporative cooling device comprising a variable plate, and a cooling liquid supply port for supplying a cooling liquid formed at one end of the variable plate.