JP2761698B2 - 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 supplied cooling water. Specifically, a cooling device for a reaction vessel for performing various reactions,
The present invention relates to a vaporization cooling device for foods, pharmaceuticals, paper, pulp, fibers, 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 gas-liquid separation functional polymer film is arranged via a gap with the surface of the object to be cooled, and a cooling liquid is supplied between the surface of the object to be cooled and the gas-liquid separation functional polymer film. In the cooling of the cooling object, a gas-liquid separation functional polymer film is provided so as to be movable with respect to the surface of the cooling object.

[0007]

The cooling liquid supplied removes the heat of the cooling object and evaporates to cool the cooling object. The amount of heat transferred from the surface of 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, the thickness of the cooling liquid film formed on the surface of the object to be cooled is also changed by moving the gas-liquid separation functional polymer film movably provided to change the distance from the surface of the object to be cooled. The amount of heat transferred can be controlled. The gas-liquid separation functional polymer membrane is a polymer membrane having a large number of small through holes that allow gas to pass without passing liquid, and the cooling liquid is held between the surface of the object to be cooled. At the same time, the vaporized vapor can pass through the membrane. By changing the position of the gas-liquid separation functional polymer film in this way, the thickness of the cooling liquid film also changes immediately, and the degree of cooling 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. A gas-liquid separation functional polymer membrane 4 is disposed on the outer surface of the heat exchanger 1 via a gap 3. One end 5 of the gas-liquid separation functional polymer membrane 4 is connected to a rotating shaft 8 of an electric motor 7 via a fixture 6. The gas-liquid separation functional polymer membrane 4 can also move with respect to the heat exchanger 1 by moving the fixture 6 right and left by the rotation of the rotation shaft 8. A lower end 9 of the gas-liquid separation functional polymer membrane 4 is slidably supported by a support base 11 via a support rod 10. The gas-liquid separation functional polymer membrane 4 can be moved by a motor as in this embodiment, or can be moved manually. A cooling liquid supply port 12 for supplying a cooling liquid is arranged in a gap above the gas-liquid separation functional polymer film 4. The cooling liquid supply port 12 has a lower end formed in a nozzle shape, and is connected to a cooling liquid pipe 14 via a valve 13. It is desirable that the valve 13 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 evaporating and cooling the heat exchanger 1, the valve 13 is opened and the cooling liquid is supplied from the cooling liquid supply port 12 to the surface of the heat exchanger 1. It is supplied to between the liquid separation function polymer membrane 4. The supplied cooling liquid cools the object to be cooled by removing the heat of the object to be cooled in the passage 2 and evaporating it. The vaporized vapor is released into the atmosphere. When changing the heat transfer amount of the heat exchanger 1, the gas-liquid separation functional polymer membrane 4 is moved to change the thickness of the cooling liquid film formed on the heat exchanger 1 without causing a time delay. be able to.

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.

In this embodiment, an example is shown in which the gas-liquid separation functional polymer membrane 4 is arranged on one side of the heat exchanger 1, but it is needless to say that it can be arranged on both sides.

[0013]

The present invention has the following effects. The thickness of the cooling liquid film can be adjusted by moving the gas-liquid separation function polymer film with respect to the surface of the object to be cooled, and the amount of heat transferred can be changed without a time delay. The object can be cooled with high precision while preventing deterioration and damage of the object.

[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 Gap 4 Gas-liquid separation functional polymer membrane 7 Electric motor 12 Coolant supply port 14 Coolant pipe

Claims (1)

(57) [Claims] 1. A gas-liquid separation functional polymer film is arranged through a gap between the surface of a cooling object and a gap, and a cooling liquid is supplied between the surface of the cooling object and the gas-liquid separation functional polymer film. An apparatus for cooling an object to be cooled by heat of vaporization, wherein a gas-liquid separation functional polymer film is provided movably with respect to the surface of the object to be cooled.