JP2691382B2 - Heating and 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 a heating and cooling device for heating and cooling. Examples of the above-mentioned heating and cooling devices include various reaction vessels, food distillation devices, concentration devices, and sterilization devices. Further, in the above apparatus, heating and cooling are often repeated.

[0002]

2. Description of the Related Art As a conventional heating / cooling apparatus, there is a technique disclosed in, for example, JP-A-63-189773.
This is achieved by providing a jacket chamber around a heating and cooling vessel, heating and evaporating a heating medium sealed in the jacket chamber by an electromagnetic induction heating mechanism, heating the vessel by the heated steam, and heating a heating medium provided in the jacket chamber. A heat exchange device is provided for condensing the heat medium, and the heat medium condensed by the heat exchange device is caused to flow down to the outer wall of the container by a liquid collection and rectification device that collects and rectifies the heat medium, so that the liquid heat medium is evaporated. It cools the container with latent heat. Compared to cooling with cooling water only by sensible heat of cooling water,
By utilizing the latent heat of vaporization of the heat medium, the response of heating / cooling can be accelerated.

[0003]

The above-described conventional heating / cooling device has a problem that the object to be heated cannot be heated / cooled uniformly during heating and cooling. This is because the heat exchange device and the liquid collecting and rectifying device are installed in the jacket chamber, and when the heating medium is heated and vaporized to heat the container, the heated steam is not evenly distributed in the jacket chamber. is there. Further, even at the time of cooling, the heat medium condensed by the heat exchange device is simply allowed to flow down to the outer wall of the container by the liquid collecting and rectifying device, and the liquid heat medium is not sufficiently and uniformly distributed over the entire container. If a large heat exchange device or a large number of liquid collecting and rectifying devices are installed to perform uniform cooling, it will further hinder the uniform passage of heated steam during heating.

Therefore, a technical object of the present invention is to enable the heating steam to be sufficiently and uniformly supplied to the jacket chamber during heating, and to sufficiently and uniformly supply the liquid heat medium for cooling to the outer wall of the container during cooling. It is to allow the material to be cooled down to be uniformly heated and cooled.

[0005]

The constitution of the heating / cooling apparatus of the present invention is as follows. A heat exchanger having a heating / cooling chamber in which a heating medium is enclosed, a liquid reservoir provided in the heating / cooling chamber, heating means for heating the heating medium in the liquid reservoir to generate steam, and cooling the heating medium. In a case where the heat exchanger is cooled by the latent heat of vaporization of the heat medium, a cooling unit for cooling the heat medium of the liquid reservoir is provided outside the liquid reservoir or the heating / cooling chamber, and the cooled heat medium is necessary for cooling the heat exchanger. A plurality of pumps for moving the heat medium are formed by continuously connecting pumps that move to different positions, and at the end of the heat exchanger on the discharge side of the pumps where cooling is required, a nozzle for flowing the heat medium is provided.

[0006]

The heating medium is heated and vaporized by the heating means, and the heating and cooling chamber is filled with the heated steam to heat the heat exchanger. In this case, since the heating / cooling chamber does not have a liquid collection rectifying device, a heat exchange device, or the like that obstructs the flow of the heating steam, the heating steam is sufficiently and uniformly distributed throughout the heating / cooling chamber.

In the case of cooling, the heat medium is cooled by a liquid reservoir or a cooling unit provided outside the heating / cooling chamber, and the cooling heat medium is moved by a pump. By flowing down to the outer wall, the cooling heat medium can be spread all over the heat exchanger by the driving force of the pump, and the object to be cooled can be cooled uniformly.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In this embodiment, an example in which a reactor is used as a heat exchanger will be described. A reaction vessel 2 having a jacket 1 as a heating and cooling chamber;
Liquid reservoir 6 formed in the lower portion of jacket 1 and liquid reservoir 6
Heating means 7 for heating the heat medium, a cooling unit 8 for cooling the heat medium, a pump 9 for pumping the cooling heat medium, and heat medium lower portions 10, 11, for flowing the cooling heat medium into the reaction vessel 2.
12 constitutes a heating / cooling device.

The jacket portion 1 is set in a pressure state such that the evaporation temperature of the heat medium reaches a desired value. For example, when water is used as the heat medium, if heating steam of 100 degrees or less is required, the inside of the jacket portion 1 is maintained in a reduced pressure state of atmospheric pressure or less. The jacket portion 1 is provided so as to cover almost the entire circumference of the reaction kettle 2 except the upper portion. At the bottom of the jacket part 1,
A cylindrical liquid reservoir 6 is provided to enclose the heat medium. Liquid reservoir 6
The outer circumference of is covered with a closed heating chamber 13, and a steam supply pipe 15 for supplying steam as a heating source to the heating chamber 13 is provided with a valve 16
Connect through. A steam trap 17 for discharging the drain generated by heating the heat medium is connected to the lower part of the heating chamber. The steam supply pipe 15, the heating chamber 13, and the steam trap 17 form a heating means 7. The lower portion of the liquid reservoir 6 is connected to the cooling unit 8 via the valve 19. A cooling water supply pipe 20 for supplying cooling water to the cooling unit 8
Are connected via the valve 21. The other end of the cooling unit 8 is connected to the pump 9. The discharge side of the pump 9 has a valve 22,
It is connected to the heat medium flow lower parts 10, 11 and 12 via 23 and 24. The heat medium flow parts 10, 11, 12 are formed so as to cover the entire circumference of the jacket part 1. Heat medium flow lower part 10,
Nozzles 2 for causing the cooling heat medium to flow down uniformly over the entire circumference of the reaction vessel 2 at the end portions of the jacket portions 1 and 11 on the side of the jacket portion 1.
Attach 5, 26 and 27.

In this embodiment, the heat medium flow lower part 10,
Although an example in which three 11 and 12 are formed has been shown, depending on the size and shape of the reaction kettle 2, one may be provided, or three or more may be provided. The reaction vessel 2 is equipped with an agitator 30 for agitating the object to be heated, and a temperature sensor 31 for detecting the temperature of the object to be heated.

When the reaction kettle 2 is heated, the steam supply pipe 15
The valve 16 provided in the above is opened to supply steam to the heating chamber 13. The heat medium in the liquid reservoir 6 is heated and evaporated to reach the inside of the jacket 1 to heat the reaction vessel 2. In this case, there is nothing that hinders the flow of steam in the jacket portion 1, so that the entire circumference of the reaction kettle 2 is heated uniformly. The heat medium drained by heating is dropped into the liquid reservoir 6 and heated again.

In the case of cooling, the valve 16 is closed to stop the supply of steam, the valve 19 is opened, and the operation of the pump 9 is started. Further, in this case, the valve 21 of the cooling water supply pipe 20 is opened to supply the cooling water to the cooling unit 8. The heat medium cooled by the cooling unit 8 passes through the pump 9 and the heat medium lower part 10,
It reaches 11 and 12, and is sprayed from the nozzles 25, 26 and 27 to the outer periphery of the reaction kettle 2. The inside of the jacket portion 1 is in a depressurized state, and the supplied cooling heat medium is evaporated by the heat held by the reaction kettle 2, and the reaction kettle 2 is cooled by its latent heat. The evaporated heat medium mixes with the injected cooling heat medium,
It becomes a liquid, drops in the liquid reservoir 6, and is cooled again.

In this embodiment, the cooling unit 8 is replaced by the pump 9
Although the example provided at the inlet side of the above is shown, it may be provided at the outlet side of the pump 9 or may be performed by supplying cooling water to the heating chamber 13.

[0014]

According to the present invention, there is nothing that obstructs the flow of the heating steam in the heating chamber during heating, the object to be heated can be heated uniformly, and the cooling heat medium is pumped during cooling. It can be sufficiently supplied to the outer wall of the heat exchanger by the driving force, and the object to be cooled can be cooled uniformly.

[Brief description of the drawings]

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 jacket part 2 reaction kettle 6 liquid reservoir part 7 heating means 8 cooling part 9 pumps 10, 11, 12 lower part of heat medium 13 heating chamber 15 steam supply pipe 20 cooling water supply pipe

Claims (1)

(57) [Claims] 1. A heat exchanger having a heating / cooling chamber enclosing a heating medium, a liquid reservoir provided in the heating / cooling chamber, and heating means for heating the heating medium in the liquid reservoir to generate steam. In a system that cools the heat medium and cools the heat exchanger by latent heat of vaporization of the heat medium, a cooling unit that cools the heat medium in the liquid reservoir is provided outside the liquid reservoir or the heating / cooling chamber, and the cooled heat medium is heat-exchanged. A pump that can move to the position necessary for cooling the vessel is installed in series,
A heating / cooling device, characterized in that a plurality of heat medium flow-down parts each having a nozzle through which a heat medium flows down are formed at an end portion of a heat exchanger on the discharge side of the pump, which requires cooling.