JP2008096059A - Decompression steam heating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a size and costs of a device by forming a heating medium fluid accumulating part in a heat exchange chamber to omit an ejector, a tank, and a tank in a circulating pump, which compose a suction means. <P>SOLUTION: A jacket part 2 is provided on an outer circumference of a reaction pot 1. The heating medium fluid accumulating part 3 is provided in a bottom of the jacket part 2. A steam pipe 5 is inserted into the heating medium fluid accumulating part 3. The circulating pump 1 and the ejector 11 are connected to a lower face of the heating medium fluid accumulating part 3 via a passage 9. The jacket part 2 is communicated with an outlet side of the ejector 11 via a passage 14. The jacket part 2 is communicated with a suction opening of the jacket part 2 via a passage 12. When heating the reaction pot 1, by supplying steam of a predetermined pressure or a predetermined temperature from the steam pipe 5, heating a heating medium fluid, and generating heating medium steam, the reaction pot 1 is heated by steam. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a reduced-pressure steam heating apparatus that heats an object to be heated with steam for heating in a heat exchange chamber.

  The reduced-pressure steam heating device supplies steam for heating into the heat exchange chamber and connects the heat exchange chamber with suction means, and can exchange heat uniformly and uniformly on the heat exchange object. .

In this reduced pressure steam heating apparatus, a heat exchange chamber, an ejector as a suction means, a tank, and a circulation pump must be installed, and there is a problem that the apparatus becomes large and expensive.
JP 2006-258316 A

  The problem to be solved is to provide an inexpensive reduced pressure steam heating apparatus by downsizing the apparatus.

  The present invention forms a heat exchange chamber for heating an object to be heated, supplies steam for heating to the heat exchange chamber, and connects the heat exchange chamber with suction means to heat the object to be heated by steam In the heat exchange chamber, a heat medium fluid reservoir for storing a predetermined amount of the heat medium fluid is formed, a heating means for heating the heat medium fluid is attached, and a circulation pump and an ejector are sequentially installed in the heat medium fluid reservoir. The suction port of the ejector and the outlet side of the ejector are connected to the heat exchange chamber.

In the reduced-pressure steam heating apparatus of the present invention, the heat medium fluid reservoir is formed in the heat exchange chamber, so that the ejector, the tank, and the tank in the circulation pump constituting the suction means can be omitted, and the apparatus is downsized. And inexpensive.
Further, the reduced-pressure steam heating device of the present invention connects the circulation pump and the ejector sequentially to the heat medium fluid reservoir, and connects the ejector suction port and the ejector outlet side to the heat exchange chamber. The heat exchange chamber can be maintained in a desired reduced pressure state by the vacuum suction force generated at the mouth, and the heating medium fluid is heated and vaporized by the heating means, whereby the entire object to be heated is heated in the heat exchange chamber. It can be heated evenly.

  The present invention forms a heat medium fluid reservoir for storing a predetermined amount of heat medium fluid in the heat exchange chamber, and the heat medium fluid reservoir shares a part of the bottom of the heat exchange chamber. Thus, the tank constituting the suction means can be omitted completely.

  In the present embodiment, an example in which the jacket portion 2 of the reaction kettle 1 is used as a heat exchange chamber is shown. A jacket portion 2 is formed over substantially the entire circumference except the upper surface of the reaction kettle 1, and the bottom portion of the jacket portion 2 is used as a heat medium fluid reservoir 3. The steam pipe 5 is inserted into the fluid in the heat medium fluid reservoir 3. A control valve 6 for controlling the amount of supplied steam is attached to the inlet side of the steam pipe 5, and steam that automatically discharges only condensate condensed with steam is discharged to the outlet side of the steam pipe 5. A trap 7 is attached. The heating medium fluid 3 is heated and evaporated by the steam supplied from the steam pipe 5, and the reaction vessel 1 can be steam-heated by filling the jacket portion 2.

A circulation pump 10 and an ejector 11 are sequentially connected to the lower end surface of the heat medium fluid reservoir 3 via a pipe 9. The inside of the jacket portion 2 communicates with the suction port of the ejector 11 via the pipe line 12. A check valve 13 that allows passage of fluid from the jacket portion 2 toward the ejector 11 and prevents passage of fluid in the opposite direction is attached to the pipe line 12. The outlet side of the ejector 11 communicates with the upper portion of the jacket portion 2 through a conduit 14.

  In the present embodiment, a branch pipe 15 branched from the discharge side pipe of the circulation pump 10 is arranged, and the upper end thereof is connected to the heat medium fluid injection nozzle 16 attached to the entire circumference of the jacket portion 2. A control valve 17 for controlling the amount of heat medium fluid to be supplied is attached to the branch pipe 15. Further, a heat medium fluid supply pipe 18 for supplying the heat medium fluid is connected to the pipe line 9. A control valve 23 for controlling the amount of heat medium fluid to be supplied is also attached to the heat medium fluid supply pipe 18.

  A temperature sensor 19 for detecting the temperature of the accumulated heat transfer fluid is attached to the lower end of the heat transfer fluid reservoir 3 and an excess fluid discharge pipe 20 is connected. An open / close valve 21 is attached to the surplus fluid discharge pipe 20. A pressure sensor 22 that detects the pressure in the jacket portion 2 is attached to the upper portion of the jacket portion 2. Each of the sensors 19 and 22 is electrically connected to the control valves 6, 17 and 23 via a controller (not shown).

  When the object to be heated in the reaction kettle 1 is heated, the inside of the jacket portion 2 is driven to a predetermined pressure state, for example, atmospheric pressure or less, by the suction force generated by the ejector 11 via the pipe 12 by driving the circulation pump 10. In addition to maintaining the vacuum state, a predetermined amount of steam is supplied from the steam pipe 5 to heat the heat medium fluid to generate heat medium steam, and the jacket portion 2 is filled with steam to make the reaction vessel 1 steam. Heat. The steam deprived of heat by heating is condensed and dripped again into the heat medium fluid reservoir 3.

In this embodiment, not only heating but also cooling can be performed. That is, by injecting the heat transfer fluid controlled to a predetermined temperature from the heat transfer fluid fluid injection nozzle 16 onto the outer surface of the reaction kettle 1, the heat transfer fluid takes the heat of the reaction kettle 1 and evaporates. The reaction kettle 1 can be vaporized and cooled.

The vaporized vapor evaporated in the jacket portion 2 by cooling the reaction vessel 1 is heated by the heat transfer fluid supplied from the heat transfer fluid injection nozzle 16 or the heat transfer fluid supplied from the conduit 14 through the ejector 11. Thus, it is condensed and dropped into the heat medium fluid reservoir 3 and reaches the circulation pump 10 again. The fluid temperature in the heat medium fluid reservoir 3 is arbitrarily controlled by appropriately controlling the replenishment amount from the heat medium fluid replenishment pipe 18 or by appropriately controlling the degree of heating from the steam pipe 5. be able to.

The block diagram which shows the Example of the pressure reduction steam heating apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Reaction kettle 2 Jacket part 3 Heat transfer fluid reservoir 5 Steam pipe 9 Pipe 10 Circulation pump 11 Ejector 15 Branch pipe 16 Heat transfer fluid injection nozzle 18 Heat transfer fluid supply pipe 19 Temperature sensor 22 Pressure sensor

Claims (1)

Forming a heat exchange chamber for heating an object to be heated, supplying steam for heating to the heat exchange chamber, and connecting the heat exchange chamber to a suction means to heat the object to be heated with heat exchange. A heat medium fluid reservoir for storing a predetermined amount of heat medium fluid in the room is formed, and a heating means for heating the heat medium fluid is attached, and a circulation pump and an ejector are sequentially connected to the heat medium fluid reservoir, A reduced-pressure steam heating apparatus, wherein the suction port of the ejector and the outlet side of the ejector are connected to a heat exchange chamber.

Images