JP2006170512A - Heating/cooling device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating/cooling device capable of carrying out a change-over from heating to cooling in a short time. <P>SOLUTION: A circulation passage 3 for cooling and a circulation passage 19 for heating are connected to a jacket part 2 of a reaction pot 1. An ejector 6 for cooling is connected to the circulation passage 3 for cooling via valves 4 and 5. An ejector 22 for heating is connected to the circulation passage 19 for heating via a valve 24. The circulation passage 19 for heating is communicated with the circulation passage 3 for cooling by a circulation passage communication passage 25. During heating of the reaction pot 1, a fluid in a tank 8 is prevented from flowing backward and accumulating in the circulation passage 3 for cooling by the circulation passage communication passage 25 and the valves 4, 5, and 24. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

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

  The heating / cooling device can switch between heating and cooling in a short time by connecting the heat exchange chamber to a heating ejector or a cooling ejector and connecting the ejector to a circulation pump via a common tank. Is.

In this heating and cooling device, it still takes time to switch from heating to cooling, and as a result, there is a problem that the controllability of the heating and cooling device is deteriorated. This is because, when switching from heating to cooling, part of the circulating fluid in the heating circulation passage remains in the cooling circulation passage, and it takes time to eliminate this residual fluid.
JP 2002-31450 A

  The problem to be solved is that the circulating fluid does not remain in the cooling circulation passage, so that switching from heating to cooling can be performed in a short time. It is an object to provide a heating / cooling device capable of improving controllability.

  The present invention relates to a heating exchange chamber in which a heat exchange chamber for heating or cooling a heat exchange object is connected to an ejector through a heating or cooling circulation passage and connected to the circulation pump via a tank. A valve member that connects and disconnects the circulation passage and the cooling circulation passage is attached, and a circulation passage communication passage that connects the heating circulation passage and the cooling circulation passage is provided.

  The heating / cooling device according to the present invention is provided with a valve member attached to the heating circulation passage and the cooling circulation passage, and provided with a circulation passage communication passage communicating the heating circulation passage and the cooling circulation passage. Further, by communicating with the ejector via the circulation passage communication passage, the fluid staying in the cooling circulation passage can be sucked and removed by the ejector, and switching from heating to cooling can be performed in a short time.

  In the present invention, a heating ejector is connected to the heating circulation passage, and a cooling ejector is connected to the cooling circulation passage so that each ejector is connected to a common tank. Only the ejector for driving is driven, and when cooling is performed, only the ejector for cooling is driven.

  In a present Example, the example using the reaction kettle 1 which heats and cools as a heat exchange chamber is shown. A heat exchange material (not shown) placed in the reaction kettle 1 is heated or cooled by steam as a heating source supplied to the jacket portion 2 or cooling water as a cooling source.

  A jacket portion 2 is formed over substantially the entire circumference of the reaction kettle 1, and valves 4 and 5 as valve members are attached to the cooling circulation passage 3 from the right side of the jacket portion 2 and connected to the cooling ejector 6. The ejector 6 is mounted with the diffuser portion 7 disposed in the tank 8. The lower part of the tank 8 is connected to the circulation pump 10 through a pipe line 9, and further communicates with the nozzle portion 12 of the ejector 6 through a pipe line 11.

  One end of the cooling circulation passage 3 is connected to the side of the nozzle portion 12 to communicate with the jacket portion 2. A liquid such as cooling water in the tank 8 is circulated by the circulation pump 10 and circulates from the pipe line 11 to the tank 8 through the nozzle portion 12 of the ejector 6. A cooling fluid replenishment supply pipe 13 and a non-condensable gas discharge pipe / overflow pipe 14 are connected to the upper right side of the tank 8.

  A steam supply pipe 15 for heating and a cooling water supply pipe 16 for cooling are connected to the jacket portion 2 of the reaction kettle 1, respectively. A pressure control valve 17 for controlling the pressure of the supplied steam is attached to the steam supply pipe 15, and a control valve 18 for controlling the amount of cooling water to be supplied is attached to the cooling water supply pipe 16.

  A heating circulation passage 19 for discharging condensate condensed with heating steam is connected to the lower end portion of the jacket portion 2. In the heating circulation passage 19, an on-off valve 20 and a steam trap 21 that can automatically discharge only condensate without discharging steam to the outlet side are arranged in parallel, and an ejector 22 for heating. Connect with. Further, a valve 24 as a valve means is attached to the heating circulation passage 19 on the ejector 22 side.

The heating ejector 22 includes a tank 8 and a circulation pump 23, and supplies the fluid in the tank 8 to the ejector 22 by driving the circulation pump 23. It sucks in steam that could not be condensed.

A circulation passage communication passage 25 that connects the heating circulation passage 19 and the cooling circulation passage 3 is connected.

  When heating a heat exchange material (not shown) in the reaction kettle 1, the steam is supplied from the steam supply pipe 15 to the jacket portion 2 so that the steam is heated in the reaction kettle 1. Heat to. Condensate condensed with steam by heating and a part of the steam not condensed are sucked into the ejector 22 through the steam trap 21 or the on-off valve 20 and the heating circulation passage 19 and reach the tank 8.

  When the reaction kettle 1 is heated in this way, the valve 24 of the heating circulation passage 19 is opened, the valve 4 of the cooling circulation passage 3 is opened, and the valve 5 is closed, so that the cooling circulation passage is opened. The fluid in the tank 8 is prevented from flowing backward from the ejector 6 and stays in the cooling circulation passage 3, and the cooling circulation passage 3 is maintained in a predetermined pressure state by the ejector 22.

  On the other hand, when the heat exchanged material in the reaction kettle 1 is cooled, cooling water having a predetermined temperature is supplied from the cooling water supply pipe 16 to the jacket portion 2 and the circulating pump 10 is driven to cool the jacket by the cooling ejector 6. By sucking the fluid in the part 2, the inside of the jacket part 2 is brought into a predetermined pressure state, for example, a vacuum state below atmospheric pressure, so that the cooling fluid can heat the heat exchanged material in the reaction vessel 1. By taking and evaporating, the heat exchanged material can be vaporized and cooled by the latent heat of vaporization.

When cooling the reaction kettle 1 in this way, the valves 4 and 5 of the cooling circulation passage 3 are opened, and the valve 24 of the heating circulation passage 19 is closed.

  When switching from heating to cooling as described above, in the conventional case, the fluid in the tank 8 has flowed back and stayed in the cooling circulation passage 3, and therefore it takes a predetermined time to suck the staying fluid. However, in this embodiment, since the fluid in the tank 8 does not flow backward and stay in the cooling circulation passage 3, there is no need to suck the fluid, and the dead time related to the control of the reaction kettle 1. Will not occur.

  The vaporized vapor obtained by evaporating and evaporating the heat of the object to be cooled in the jacket portion 2 is sucked into the ejector 6 from the cooling circulation passage 3 and reaches the tank 8.

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

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Reaction kettle 2 Jacket part 3 Cooling circulation path 4,5 Valve 6 Cooling ejector 8 Tank 10 Circulation pump 12 Nozzle part 15 Steam supply pipe 16 Cooling water supply pipe 19 Heating circulation path 22 Heating ejector 23 Circulation pump 24 Valve 25 Circulation passage communication passage

Claims (1)

A heat exchange chamber that heats or cools the heat exchanged material communicates with an ejector through a heating or cooling circulation passage, and is connected to the circulation pump via a tank to the ejector. A heating / cooling apparatus comprising: a valve member that connects and disconnects each of the circulation passages for circulation; and a circulation passage communication passage that communicates the circulation passage for heating and the circulation passage for cooling.

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