JP5405812B2 - Heating device - Google Patents

Description

  The present invention relates to a heating apparatus that heats a heat exchange object by directly or indirectly exchanging the heat exchange object in a heat exchange chamber.

  The heating device communicates the heat exchange chamber with the ejector, connects the ejector to the circulation pump via the tank, and provides a control unit for the water temperature in the tank by supplying cooling water to the tank. It is possible to prevent vibrations and shocks associated with the hammer phenomenon caused by the rapid condensation of water.

In this heating apparatus, when changing the heating temperature, it is not possible to quickly control the predetermined heating temperature without time delay, and as a result, there is a problem that the temperature controllability of the heating apparatus is deteriorated. This is because it takes time to open and close the heating fluid supply valve when switching the heating temperature.
Japanese Patent Publication No. 5-34054

  The problem to be solved is to improve the temperature controllability of the heating device by minimizing the time delay when switching the heating temperature.

In the present invention, a heat exchange chamber for heating an object to be heat-exchanged communicates with an ejector, and the ejector is connected to a circulation pump via a tank, and a cooling fluid supply pipe for supplying a cooling fluid to the tank is connected to the ejector In order to heat the heat exchange object by connecting a steam supply pipe to the heat exchange chamber and sequentially attaching a heating fluid tank and a rapid automatic open / close valve to the steam supply pipe, open the rapid automatic open / close valve. Then, by rapidly supplying steam having a temperature suitable for heating in the heating fluid tank, the heat exchanged material is heated without time delay .

  In the heating device of the present invention, a heating fluid tank is connected to the heat exchange chamber, so that a heating fluid of a predetermined temperature, for example, heating steam, is stored in the heating fluid tank in advance. Steam for heating at a temperature can be supplied to the heat exchange chamber, and the heating process can be switched without time delay. Therefore, the temperature controllability at the time of switching the heating temperature can be improved.

  In the present invention, a heating fluid tank is connected to the heat exchange chamber. The volume and shape of the tank are appropriately determined according to the volume of the heat exchange chamber, the piping connection status between the tank and the heat exchange chamber, and the like. Can be designed.

  In this embodiment, an example using a reaction kettle 1 that performs heating as a heat exchange chamber is shown. A heat exchange material (not shown) placed inside the reaction kettle 1 is heated by heating steam as a heating source supplied to the jacket portion 2 of the reaction kettle 1.

  A jacket portion 2 is formed over almost the entire circumference of the reaction kettle 1, and a discharge pipe 19 is attached to the lower portion of the jacket portion 2 and connected to the ejector 6. In the discharge pipe 19, an on-off valve 20 and a steam trap 21 that does not discharge steam but can automatically discharge only the condensed condensate of steam to the outlet side are arranged in parallel. The suction part of the nozzle part 12 is connected. The diffuser part 7 of the ejector 6 is connected to the tank 8. A side of the tank 8 is connected to a circulation pump 10 through a circulation passage 9, and further communicates with a nozzle portion 12 of the ejector 6 through a pipe 11.

The pipe 11 is branched and the cooling fluid supply passage 3 is connected. A control valve 5 for arbitrarily controlling the flow rate of the cooling fluid supplied to the jacket portion 2 is attached to the cooling fluid supply passage 3. A liquid such as cooling water in the tank 8 is circulated by the circulation pump 10 and circulates from the pipe line 11 through the nozzle portion 12 of the ejector 6 into the tank 8 and through the cooling fluid supply passage 3 to the jacket portion. 2 is supplied. A cooling fluid supply pipe 13 is connected to the upper part of the tank 8. Further, an excess fluid discharge pipe 23 is connected to the discharge side of the circulation pump 10 so that the liquid level in the tank 8 can be maintained within a predetermined range.

  A cooling vacuum tank 16 is connected to the left side surface of the jacket portion 2 through a conduit 14. The lower end of the cooling vacuum tank 16 is connected to the nozzle portion 12 of the ejector 6 via a pipe line 18. A rapid automatic opening / closing valve 22 is attached to the pipeline 14.

  A steam supply pipe 15 for heating is connected to the upper surface of the jacket portion 2 of the reaction kettle 1. A pressure control valve 17 for controlling the pressure of the supplied steam, a heating fluid tank 24, and a rapid automatic opening / closing valve 25 are sequentially attached to the steam supply pipe 15. Steam of a predetermined pressure, that is, temperature is supplied from the steam supply pipe 15 into the heating fluid tank 24, and when the rapid automatic opening / closing valve 25 is closed, steam of a predetermined temperature is stored. is there.

  The lower end of the heating fluid tank 24 is connected to the nozzle portion 12 of the ejector 6 through a pipe line 26. A steam trap 27 and an on-off valve 28 are attached to the pipe line 26 in parallel.

  When heating the heat exchanged material (not shown) in the reaction kettle 1, the rapid automatic on-off valve 25 is opened to rapidly supply steam at a temperature suitable for heating in the heating fluid tank 24 to the jacket portion 2. As a result, the heat exchange object can be heated without time delay. Condensate condensed with steam by heating and part of the steam not condensed are sucked into the ejector 6 through the discharge pipe 19 and the steam trap 21 or the opening / closing valve 20 and reach the tank 8.

  When the heat exchanged material in the reaction kettle 1 is cooled instead of heating, the circulating pump 10 is driven to supply the cooling fluid, that is, the cooling water from the cooling fluid supply passage 3 to the jacket portion 2, and the rapid automatic opening and closing. By opening the valve 22 and connecting the jacket 2 with the cooling vacuum tank 16 that is maintained in a predetermined vacuum state in advance, the cooling water takes the heat of the heat exchanged material and evaporates, thereby The exchange can be vaporized and cooled.

  Thus, by switching between the heating fluid tank 24 and the cooling vacuum tank 16 at the time of switching between heating and cooling, heating and cooling can be switched without time delay, and the temperature controllability of the heating and cooling device is improved. be able to.

The vaporized vapor and the remainder of the cooling fluid evaporated and evaporated by taking the heat of the object to be cooled in the jacket portion 2 are sucked into the ejector 6 from the on-off valve 20 and the steam trap 21 and reach the tank 8.

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

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Reaction kettle 2 Jacket part 3 Cooling fluid supply path 6 Ejector 8 Tank 10 Circulation pump 12 Nozzle part 13 Cooling fluid supply pipe 14 Pipe line 15 Steam supply pipe 16 Cooling vacuum tank 19 Discharge pipe 20 On-off valve 21 Steam trap 22 Rapid Automatic open / close valve 23 Excess fluid discharge pipe 24 Heating fluid tank 25 Rapid automatic open / close valve

Claims (1)

The heat exchange chamber for heating the heat exchanged material is communicated with the ejector, connected to the circulation pump through the tank to the ejector, and connected to the tank with a cooling fluid supply pipe for supplying a cooling fluid.
Connect the steam supply pipe to the heat exchange chamber,
Such as through between the heat exchange chamber and the steam supply pipe, rapidly automatic opening and closing to control the heating fluid tank bottom is connected to the ejector via the steam trap, the steam supply to the heat exchange chamber sequentially mounted and a valve,
When heating the exposed heat exchanger comprises, by rapidly feeding the temperature of the steam which is suitable for heating of the quick automatic opening and closing valve the heating fluid in the tank by opening and without delay the heat exchange material Time A heating device characterized by heating.