JP2003307394A - Heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat exchanger capable of accurately condensing steam without requiring any cooling fluid. <P>SOLUTION: A steam casing 2 is provided above a sealed container 1. A liquid reservoir part 9 and a steam passage 10 are connected and provided in the steam casing 2. A loop type thin heat pipe 3 is provided on an outer periphery of the steam casing 2. The steam casing 2 and inside of the container 1 are connected by a fluid discharging pipe 14. The steam generated in the container 1 moves from a pipe passage 5 to the steam casing 2 and is condensed by being cooled while passing through fluid in the liquid reservoir part 9. The heat of the liquid of which temperature has risen is released to atmosphere by the loop type thin heat pipe 3. <P>COPYRIGHT: (C)2004,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger capable of eliminating steam rising from a container containing high-temperature water or the like. 2. Description of the Related Art A conventional heat exchanger of this type is disclosed, for example, in Japanese Patent Application Laid-Open No. 60-120186. This is achieved by installing a cooling pipe inside a heat recovery chamber having a steam supply port, connecting the air release section to this heat recovery chamber, and storing condensate in the air release section and the lower part of the heat recovery chamber.
It is possible to prevent the non-condensable gas from flowing into the heat recovery chamber and efficiently exchange heat. [0003] The above-mentioned conventional heat exchanger requires a cooling water to condense steam and a large amount of cooling water to completely condense steam. was there. Therefore, a technical problem of the present invention is to provide a heat exchanger that can reliably condense steam without requiring a cooling fluid. Means taken to solve the above problem is to heat and exchange steam rising from a container containing a high-temperature liquid into a container, which heats up the container. A steam casing into which steam flows into is formed, a liquid reservoir portion for storing a predetermined amount of liquid in the steam casing is formed, and a steam passage is formed in the steam passage so that the steam passes through the liquid in the liquid reservoir portion. In addition to extending into the section, a loop-type thin tube heat pipe is attached to the outer periphery of the steam casing. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Steam generated in a container reaches a steam casing, and is cooled and condensed by passing through the liquid in a liquid reservoir from a steam passage, so that steam rising up with a mist can be obtained. Can be eliminated. The heat absorbed by the liquid in the liquid reservoir is transmitted to the steam casing and is radiated from the loop-type thin tube heat pipe to the atmosphere. [0006] The loop-type thin tube heat pipe accommodates a working fluid for heat transport in a loop-type thin tube formed in a thin flat plate in a loop shape, and uses a contact portion of the loop-type thin tube with a steam casing as a heat absorbing portion. In addition, by using the other part in the atmosphere as a heat radiating part, it has a thin shape and excellent heat transfer ability. FIG. 1 shows a heat exchanger comprising a hermetically sealed container 1, a steam casing 2 and a loop-type thin tube heat pipe 3. [0008] The container 1 is a cylindrical tank and stores therein a high-temperature liquid 4 such as hot water. A pipe 5 communicating with the steam casing 2 is attached to the upper part of the container 1. A valve 6 is interposed in the pipe 5. An atmosphere opening pipe 8 is connected to the upper right portion of the container 1 via a valve 7. A plurality of liquid reservoirs 9 having a substantially U-shaped cross section are mounted in the cylindrical tank-shaped steam casing 2 in the horizontal and vertical directions, respectively. A steam passage 10 is provided to extend inside the liquid reservoir 9. The lower end of the steam passage 10 is disposed below the upper end surface of the liquid reservoir 9. A thin flat heat pipe 3 is attached to the outer periphery of the steam casing 2. The loop type thin tube heat pipe 3 accommodates a working fluid for heat transport in a loop type thin tube formed in a thin flat plate in a loop shape, and makes a contact portion of the loop type thin tube with the outer periphery of the steam casing 2 into a heat absorbing portion 12. The other part is the heat radiating part 13. A liquid discharge pipe 14 is attached in parallel with the pipe 5 to connect the inside of the steam casing 2 and the upper part of the container 1. The liquid discharge pipe 14 is provided with an automatic drain valve 15 for flowing only the liquid downward. On the other hand, a steam discharge pipe 17 is attached to the upper part of the steam casing 2 via a valve 16. The steam discharge pipe 17 discharges steam in the steam casing 2 to the outside of the system by opening the valve 16. The steam that has reached the steam casing 2 from the pipe line 5 passes through the passage 11 between the lower liquid reservoirs 9 through the liquid reservoir 9.
When the liquid reaches the upper part and passes through the liquid stored in the liquid storage part 9, it is cooled and condensed to become a liquid. Part of the steam that could not be completely condensed in the lower liquid reservoir 9 and reevaporated vapor in which the liquid in the liquid reservoir 9 re-evaporated passes through the vapor passage 10 and is condensed again in the upper liquid reservoir 9. You. In the initial stage of operation, the liquid in the liquid storage section 9 is automatically stored by condensation of the initial steam flowing from the container 1 because the temperature of the entire steam casing 2 is lowered to room temperature. The liquid condensed in the liquid reservoir 9 is
Overflows from the upper end surface to the lower liquid reservoir 9 and the bottom of the steam casing 2, and flows down from the liquid discharge pipe 14 into the container 1. The temperature of the liquid in the liquid reservoir 9 rises by condensing the steam, but the heat is transmitted to the steam casing 2 and further heat-moves in the loop-shaped thin tube of the loop-shaped thin-tube heat pipe 3 to dissipate heat. Is released to the atmosphere. In the above embodiment, two loop-type thin heat pipes 3 are arranged in the steam casing 2, but the number of heat pipes depends on the size of the steam casing 2 and the amount of steam to be condensed. Can be appropriately designed. As described above, according to the present invention, the steam generated in the container is condensed in the steam casing, so that the steam that rises with the steam can be eliminated without requiring a cooling fluid.

[Brief description of the drawings] FIG. 1 is a configuration diagram showing an embodiment of a heat exchanger of the present invention. [Explanation of symbols] 1 container 2 Steam casing 3 Loop type thin tube heat pipe 4 High-temperature liquid 5 pipeline 9 Liquid reservoir 10 steam passage 12 Heat absorbing part 13 Heat radiation part

Claims (1)

Claims: 1. A steam container in which steam rising from a container containing a high-temperature liquid and rising from the container is exchanged with heat to condense the steam.
A liquid reservoir for storing a predetermined amount of liquid in the steam casing is formed, and a steam passage is extended into the liquid reservoir so that steam passes through the liquid in the liquid reservoir, and a loop is formed around the outer periphery of the steam casing. A heat exchanger characterized by attaching a thin-tube heat pipe.