JP2010025390A - Heating and cooling device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating and cooling device capable of allowing cooling water to surely flow down at a falling section of device piping. <P>SOLUTION: A gas circulation passage 3 and a liquid circulation passage 19 are connected to a jacket section 2 of a reaction vessel 1. An ejector 6 for cooling is connected to the gas circulation passage 3 through a valve 4 and a falling section 27. An ejector 22 for heating is connected to the liquid circulation passage 19 through a falling section 28. The falling sections 27, 28 comprise swirl flow generating means. Thus flowing-down of the cooling water does not disturbed as the cooling water is swirled at the falling section 28, though the cooling water is partially evaporated to be steam, when the cooling water is supplied from a cooling water supply pipe 16. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

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, especially when switching from the heating process to the cooling process, the cooling water cannot flow down reliably in the circulation passage, and the water level of the cooling water in the tank rises to a predetermined position. However, there was a problem that the heating and cooling device could not be operated continuously. This is because when switching from the heating process to the cooling process, a part of the cooling water is supplied inside the apparatus to supply the cooling water for cooling to the place where the entire apparatus has finished the heating process and is in a high temperature state. Evaporates into steam, and especially when the cooling water is about to flow down from the top to the bottom of the equipment piping, the vaporized vapor rises from the bottom to the top of the piping at the bottom. This is to prevent the cooling water from flowing down.
JP 2002-31450 A

  The problem to be solved is heating that allows the cooling water to flow reliably at the falling part of the equipment piping, maintains the rise of the cooling water level in the tank, and allows the heating and cooling device to operate continuously. It is to provide a cooling device.

  In the present invention, a heat exchange chamber for heating or cooling a heat exchange object is communicated with an ejector through a circulation passage, and connected to the circulation pump via a tank to the ejector. A swirling flow generating means that swirls the flowing water to swirl is attached to the heat exchange chamber near the end of the circulation passage.

  The heating / cooling device of the present invention can swirl the cooling water flowing down the falling portion of the circulation passage by attaching the swirling flow generating means in the heat exchange chamber near the end of the circulation passage. A vapor phase is generated at the center of the swirl, and the vaporized vapor from the center gas phase is raised. On the other hand, the cooling water is not obstructed by the upward flow of the steam, and the falling portion is reliably swung. It can flow down into the tank, and the heating and cooling device can be continuously operated.

  The present invention is to install the swirling flow generating means in the heat exchange chamber near the end of the circulation passage, the swirling flow generating means, in the heat exchange chamber at the upper end of the falling portion, the spiral convex portion, Alternatively, it is desirable that the cooling water flowing down can be swirled by forming the recess.

  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 inside 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 a valve 4 is attached to the gas circulation passage 3 from the left side of the jacket portion 2 and connected to a gas ejector 6. The gas circulation passage 3 is provided with a falling portion 27 that vertically extends from the upper side to the lower side. Although not illustrated in the inner periphery of the falling portion 27, a swirl flow generating means capable of swirling the cooling water flowing down is attached by forming a spiral convex portion or a concave portion.

The gas ejector 6 connected to the falling portion 27 is mounted by disposing the diffuser portion 7 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 a falling portion 27 is connected to the side of the nozzle portion 12 to communicate with the jacket portion 2. 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. A cooling water replenishment supply pipe 13 is 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 liquid circulation passage 19 for discharging condensate condensed with heating steam is connected to the lower end portion of the jacket portion 2. The liquid circulation passage 19 is also provided with a falling portion 28. In the falling part 28, an on-off valve 20 and a steam trap 21 that does not discharge steam but can automatically discharge only condensate to the outlet side are arranged in parallel, and an ejector 22 for heating and Connecting.

  Although not shown in the bottom portion 29 in the jacket portion 2 at the upper end of the falling portion 28, a swirl flow generating means capable of swirling cooling water flowing down by forming a spiral convex portion or a concave portion is provided. Install. In this falling part 28, when switching from the heating process to the cooling process, in order to supply cooling water for cooling to the place where the reaction kettle 1, the jacket part 2 and the falling part 28 are still in a high temperature state. In the apparatus, a part of the cooling water evaporates to become steam, but the cooling water is swirled at the falling portion 28, so that the cooling water does not flow down.

A circulation passage pressure equalizing pipe 25 connects the upper position 5 near the end of the horizontal portion of the circulation passage 19 for liquid and the upper position 24 from the bottom of the jacket portion 2 of the circulation passage 3 for gas. An adjustment valve 26 that can adjust the amount of fluid flowing down is attached to the circulation passage pressure equalizing pipe 25. By opening the control valve 26, the gas circulation passage 3 and the liquid circulation passage 19 can communicate with each other to be in a pressure equalized state.

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

A surplus fluid discharge pipe 14 for discharging surplus fluid to the outside of the system is connected between the circulation pump 23 and the ejector 22.

  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 is sucked into the ejector 22 through the steam trap 21 or the on-off valve 20 and the liquid circulation passage 19 and reaches the tank 8.

  When cooling the heat exchanged material in the reaction kettle 1 instead of heating, supply of steam from the steam supply pipe 15 is stopped and cooling water at a predetermined temperature is supplied from the cooling water supply pipe 16 to the jacket portion 2. However, a part of the cooling water evaporates in order to supply the cooling water to the place where the reaction kettle 1, the jacket part 2, the liquid circulation passage 19 and the falling part 28 are still in a high temperature state. However, since the cooling water is swirled at the falling part 28, the flow of the cooling water is not hindered.

When the heat exchanged material in the reaction vessel 1 is cooled, the circulation pump 10 is driven and the fluid in the jacket portion 2 is sucked by the cooling ejector 6 so that the inside of the jacket portion 2 is in a predetermined pressure state. For example, by setting the vacuum state to atmospheric pressure or less, the cooling water takes the heat of the heat exchange material in the reaction kettle 1 and evaporates, whereby the heat exchange material is vaporized and cooled by the latent heat of evaporation. It is something that can be done.

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 Gas circulation path 6 Cooling ejector 8 Tank 10 Circulation pump 12 Nozzle part 15 Steam supply pipe 16 Cooling water supply pipe 19 Liquid circulation path 22 Heating ejector 23 Circulation pumps 27 and 28 Falling part

Claims (1)

In the heat exchange chamber that heats or cools the heat exchanged material, communicates with the ejector in the circulation passage, and is connected to the circulation pump through the tank to the ejector. A heating / cooling device, characterized in that swirl flow generating means swirled into swirl flow is mounted in a heat exchange chamber near the end of the circulation passage.

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