JP4451173B2 - Sealed heat exchanger - Google Patents

Description

 The present invention relates to a hermetic heat exchange apparatus that heats or cools a heat exchange chamber at a relatively low temperature with a predetermined low pressure state.

  The heat exchange device heats or cools a heat exchange object at a temperature corresponding to the pressure in the heat exchange chamber.

For example, a liquid reservoir provided in the heating and cooling unit and a cooling unit that cools the heat medium in the liquid reservoir are provided in the liquid reservoir, and a pump that supplies the heat medium cooled in the cooling unit to the heat exchanger is connected. By providing the heat medium cooled by the pump uniformly over the entire heating and cooling unit, the occurrence of uneven cooling can be prevented.

There has been a problem that sufficient cooling efficiency cannot be obtained when the heat exchange object is cooled in the heating / cooling section. This is because the vapor of the heat medium evaporated and evaporated from the object to be cooled in the heating / cooling unit stays in the heating / cooling unit, and the object to be cooled cannot be continuously vaporized and cooled.
Japanese Patent No. 2691382

  The problem to be solved is that the heat of the vaporized heat medium in the heat exchange chamber is prevented from staying and the evaporative cooling is performed continuously to achieve high cooling efficiency. It is to provide an exchange device.

The present invention provides a heat exchange chamber that provides a heat exchange chamber for exchanging heat with a heat exchange object, maintains the heat exchange chamber in a predetermined pressure state in advance, and stores a predetermined amount of the heat exchange medium in the heat exchange chamber A heat exchange medium reservoir is provided, and a heat exchange member for heating or cooling the heat exchange medium reservoir is attached, and pump means for continuously supplying the cooled heat exchange medium into the heat exchange chamber is provided. Cover the entire circumference of the outer part with a sealed heat exchange chamber, and configure the cooling member in this heat exchange chamber, and attach the cooling member on the opposite side of the heat exchange chamber on the outer circumference of the heat exchange chamber A cooling water supply pipe for supplying cooling water to these cooling members is connected .

  The hermetic heat exchange device of the present invention has a cooling member attached to the side of the heat exchange chamber opposite to the object to be heat exchanged, thereby removing the heat of the object to be heated and evaporating and evaporating in the heat exchange chamber. As the steam is quickly cooled and condensed by the cooling member, the convection of the vaporized steam in the heat exchange chamber is promoted, and the cooling efficiency can be improved.

  The cooling member can be performed by providing a predetermined space on the opposite side of the heat exchange chamber from the heat exchange object and supplying a cooling medium such as cooling water to this space.

In the present embodiment, an example in which the reaction kettle 1 is used as a heat exchange material will be shown.
In FIG. 1, a jacket portion 2 as a heat exchange chamber disposed on the outer periphery of a reaction vessel 1, a heat exchange medium reservoir portion 3 formed at a lower portion of the jacket portion 2, and a heating means 4 for heating a medium 6 of the reservoir portion 3. A cooling means 5 for cooling the medium 6, a pump 7 for pumping the cooled medium 6 into the jacket portion 2, a medium flowing means 8 for flowing the cooled medium 6 to the outer surface of the reaction kettle 1, and The hermetic heat exchanger is constituted by the cooling member 9 attached to the outer periphery of the jacket portion 2.

  The jacket portion 2 is in a pressure state such that the evaporation temperature of the medium 6 becomes a predetermined value. For example, when water is used as the medium 6, if heating steam of 100 ° C. or lower is required, the inside of the jacket portion 2 is maintained in a reduced pressure state of atmospheric pressure or lower. On the other hand, in the case of a temperature of 100 ° C. or higher, the pressure is set to atmospheric pressure or higher.

The jacket portion 2 is provided so as to cover almost the entire circumference except for the upper portion of the reaction kettle 1. A cylindrical heat exchange medium reservoir 3 is provided below the jacket 2 to enclose the medium 6. The outer periphery of the reservoir 3 is covered with a sealed heat exchange chamber 10, and the heat exchange chamber 10 constitutes a cooling member for the reservoir 3.

A steam supply pipe 11 that supplies high-temperature steam as a heating source is connected to the heat exchange chamber 10. An automatic control valve 12 and a valve 13 are attached to the steam supply pipe 11. The automatic adjustment valve 12 can appropriately adjust the pressure or temperature of the steam supplied to the heat exchange chamber 10.

A steam trap 14 is connected below the heat exchange chamber 10. The steam trap 14 heats the medium 6 and discharges the condensate generated by condensation of the steam deprived of heat to the outside. The heat exchange chamber 10, the steam supply pipe 11, the automatic control valve 12, and the steam trap 14 constitute a heat exchange member for heating.

  A cooling water supply pipe 15 that supplies low-temperature cooling water as a cooling source is connected to the heat exchange chamber 10. An automatic control valve 16 and a valve 17 are attached to the cooling water supply pipe 15. The heat exchanger 10, the cooling water supply pipe 15, and the automatic adjustment valve 16 constitute a heat exchange member for cooling.

  Cooling water can be supplied also to the cooling member 9 by the branch pipe 18 which branches a part of the cooling water supply pipe 15. A cooling water discharge pipe 19 for discharging the cooling water whose temperature has risen to the outside is connected to the upper part of the cooling member 9.

A pump 7 for feeding a medium pressure is disposed below the heat medium reservoir 3. The pump 7 is connected to the medium flow means 8 of the jacket portion 2 by a pipe line 20. The medium flow-down means 8 includes a loop-shaped jet pipe 21 and a loop-shaped deflecting plate 22, and connects a part of the jet pipe 21 to the pipe 20. The cooled medium 6 supplied from the pipe 20 is jetted from the jet pipe 21 onto the upper surface of the deflection plate 22 and flows down while forming a water film on the outer surface of the reaction vessel 1.

  When the reaction kettle 1 is heated, steam at a predetermined temperature for heating is supplied from the steam supply pipe 11 to the heat exchange chamber 10. The medium 6 in the heat exchange medium reservoir 3 is heated and evaporated to reach the jacket part 2 to heat the reaction kettle 1. The medium that has become condensate by heating is dropped into the reservoir 3 and heated again by steam.

  When the reaction kettle 1 is cooled, the supply of steam is stopped and the cooling water is supplied from the cooling water supply pipe 15 to the heat exchange chamber 10 and the cooling member 9. The medium 6 cooled with the cooling water in the heat exchange chamber 10 flows down the entire outer periphery of the reaction kettle 1 through the pump 7 and the medium flow-down means 8, thereby taking away the heat held by the reaction kettle 1 and evaporating. The reaction kettle 1 is vaporized and cooled with latent heat of vaporization.

The evaporated medium 6 is filled in the jacket portion 2, but is quickly condensed by being cooled by the cooling member 9, becomes condensed water, drops into the reservoir portion 3, and is cooled again.

  The vaporized steam in the jacket part 2 is cooled by the cooling member 9, so that the convection of the vaporized steam in the jacket part 2 is accelerated and the efficiency of vaporization cooling can be improved.

The cooling member is arranged on the outer periphery of the jacket portion to accelerate the convection of the vaporized vapor in the jacket portion, thereby improving the vaporization cooling efficiency, and can be used for heat exchange devices for various applications.

The block diagram which shows the Example of the closed type heat exchange apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Reaction kettle 2 Jacket part 3 Heat exchange medium storage part 6 Heat exchange medium 7 Pump 8 Medium flow down means 9 Cooling member 10 Heat exchange chamber 11 Steam supply pipe 15 Cooling water supply pipe 19 Cooling water discharge pipe 21 Jet pipe 22 Deflection plate

Claims (1)

A heat exchange chamber for exchanging heat with the heat exchange object is provided, the heat exchange chamber is maintained in a predetermined pressure state in advance, and a heat exchange medium reservoir for storing a predetermined amount of heat exchange medium is provided in the heat exchange chamber In addition, a heat exchanging member for heating or cooling the heat exchange medium reservoir is attached and pump means for supplying the cooled heat exchange medium into the heat exchange chamber is connected to the outer periphery of the heat exchange medium reservoir. Covering almost the entire circumference with a sealed heat exchange chamber, this cooling chamber constitutes a cooling member, and a cooling member is also attached to the outer side of the heat exchange chamber on the side opposite to the heat exchange object. A sealed heat exchange apparatus , wherein a cooling water supply pipe for supplying cooling water to a member is connected .

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