JP2000121257A - Heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger capable of accurately condensing vapor requiring no cooling fluid. SOLUTION: This apparatus includes a heat exchanger 1 which has an inflow port 5 for vapor and a high temperature drain, a discharge port 8 for a drain as condensed vapor and a low temperature drain and an atmospheric air open port 6 opened therein and has a drain reservoir chamber 3 inside and a heat pipe 2 which has a bent pipe 10 connected to the atmospheric air open port 6, an evaporation part 15 extended into the bent pipe 10 and a condensing part 16 extended outside the bent pipe 10. Reevaporated vapor generated from the vapor and the high temperature drain flowing into the drain reservoir chamber 3 from the inflow port 5 to reach the bent pipe 10 from the atmospheric air open port 6 is condensed by the heat pump 2. This enables accurately condensing of the vapor requiring no cooling fluid.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat source capable of eliminating steam remaining in a moyamoya by condensing remaining steam used as a heat source or the like and re-evaporated steam generated from a high-temperature drain in various steam-using devices. About the exchanger.

[0002]

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 conventional heat exchanger has a problem that cooling water is required to condense steam, and a large amount of cooling water is required to completely condense steam. . Therefore, a technical problem of the present invention is to provide a heat exchanger that can reliably condense steam without requiring a cooling fluid.

[0004]

Means taken to solve the above problems are as follows. An inlet for steam or high-temperature drain, an outlet for drain of condensed steam or low-temperature drain, and an opening to the atmosphere are opened. A heat exchange container having a drain storage chamber, a vent pipe connected to the atmosphere opening port, a heat pipe having an evaporating section extending into the vent pipe and a condensing section extending from the vent pipe to the outside. A heat exchanger.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The above-mentioned heat pipe is composed of a closed tube, a structure called a wick, which works well for a capillary action, lined in the tube, and a heat sealed inside the tube to such an extent that the wick is sufficiently filled. Transmission fluid. In addition, metal materials such as copper, aluminum, nickel, and stainless steel are used for the tube, and a wire wick, sintered metal, metal fiber, glass fiber, or the like having a groove cut directly in the tube inner wall is used as a wick. As a heat transfer fluid, metals such as mercury and sodium are used in addition to water, alcohol, ammonia, and freon.

The heat transfer fluid normally accumulates in the evaporator of the heat pipe. When steam or high-temperature drain flows into the drain reservoir from the inlet and reaches the vent pipe from the atmosphere opening, the heat transfer fluid evaporates, and the vaporization heat is generated from the re-evaporated steam generated from the steam or high-temperature drain. Take away and condense. The drain or low-temperature drain in which the vapor is condensed flows down and accumulates in the drain storage chamber, and is discharged from the discharge port to a predetermined location. The evaporated heat transfer fluid moves to the condensing section through the center of the pipe of the heat pipe, is cooled by the air on the outer surface of the heat pipe, condenses, and releases liquefaction heat. The condensed heat transfer fluid returns from the condenser to the evaporator through the wick, and repeats a cycle of evaporating again in the evaporator.

[0007] Since the steam flowing into the vent pipe and the re-evaporated steam generated from the high-temperature drain are condensed by using a heat pipe, it is possible to surely condense without requiring a cooling fluid.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a heat exchanger comprises a heat exchange vessel 1, a vent pipe 10 connected to the heat exchange vessel 1, and a heat pipe 2 attached to the vent pipe 10.

The heat exchange vessel 1 has a drain chamber 3 inside, an inlet 5 for steam or high-temperature drain and an air opening 6 open on a top wall 4, and a drain or a condensate of steam on a bottom wall 7. The low-temperature drain outlet 8 is open. A supply pipe 9 for steam or high-temperature drain is connected to the inflow port 5, a vent pipe 10 is connected to the atmosphere opening port 6, and a discharge pipe 11 is connected to the discharge port 8.

[0010] A plurality of heat pipes 2 are attached to the vent pipe 10. The heat pipe 2 is a metal tube 12 having a vacuum inside.
A wick 13 lined on the inner surface of the metal tube 12,
The evaporator 15 is formed from a heat transfer fluid sealed enough to sufficiently fill the wick 13, the evaporator 15 is extended into the drain reservoir 3, and the condenser 16 is extended from the drain reservoir 3 to the outside. Although not shown, radiating fins may be formed on the outer periphery of the condenser 16.

The supply pipe 9 is connected to the outlet side of a steam-using device (not shown), a re-evaporation tank, or the like to supply steam or high-temperature drain from the inlet 5 into the drain reservoir 3. The discharge pipe 11 removes the condensed drain and low-temperature drain of the vapor to a predetermined location.

When steam or high-temperature drain flows into the drain reservoir 3 from the inflow port 5 through the supply pipe 9 and reaches the vent pipe 10 from the air release port 6, it accumulates in the evaporator 15 of the heat pipe 2. The heat transfer fluid evaporates and condenses the re-evaporated steam generated from the steam or high temperature drain. The evaporated heat transfer fluid moves to the condenser 16 through the center of the heat pipe 2, is cooled and condensed by the air on the outer surface of the heat pipe 2, returns to the evaporator 15 through the wick 13, and returns to the evaporator 15. Repeat the evaporation cycle. The drain or low-temperature drain in which the vapor is condensed by the heat pipe 2 flows down and accumulates in the drain storage chamber 3, and is discharged from the discharge port 8 through the discharge pipe 15 to a predetermined location.

In the above embodiment, an example in which the heat pipes are arranged in five rows has been described. However, the number of heat pipes can be appropriately designed according to the size of the heat exchange container and the supply amount of steam to be condensed.

[0014]

As described above, according to the present invention, the steam and the re-evaporated steam generated from the high-temperature drain are condensed using the heat pipe in the vent pipe, so that the steam is reliably condensed without the need for a cooling fluid. It produces an excellent effect that it can be performed.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional configuration diagram showing an embodiment of a heat exchanger of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat exchange container 2 Heat pipe 3 Drain reservoir 5 Inflow port 6 Atmosphere opening port 8 Outlet port 10 Vent pipe 15 Evaporation section 16 Condensing section

Claims (1)

[Claims] 1. A heat exchange container having an inlet for steam or high-temperature drain, an outlet for drain of condensed steam or low-temperature drain, and an opening to the atmosphere, and having a drain reservoir therein, and connected to the opening to the atmosphere. A heat exchanger comprising: a vent pipe formed as described above; and a heat pipe having an evaporating section extending into the vent pipe and a condensing section extending from the vent pipe to the outside.