JPS58187786A - Condenser - Google Patents

Abstract

PURPOSE:To prevent the mixture of flows between two fluids by densely and widely providing fluid passages and heat transfer surfaces, effectively forming the contacting surfaces between the two fluid passages to improve the heat transfer, thereby reducing the size of a stereoscopic structure. CONSTITUTION:Condensed fluid is flowed in gas state from an inflow tube 7 to the internal space of a cylinder 1. Since the internal space has a guide plate 2 which forms a passage of the condensed fluid, the gas is moved downwardly in a zigzag along the plate 2. At this time the fluid is thermally exchanged with the fluid flowed in a zigzag downwardly through a fluid conduit 6 which is secured to a holder 3 provided from the outer wall surface of the cylinder 1, and becomes the state of gas-liquid phases. Since the heat transfer rates of the gas and the liquid are different, the pitch is varied in response to the variation in the state of the condensed fluid so that the pitch of the plate 2 which is used also as the heat transfer surface is optimized. The condensed fluid is increased in the condensed amount along the plate 2, completely condensed and then fed from the cylinder 1 at the low flowout tube 8.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat exchanger for hot water supply that maintains thermal conditions between two fluids and prevents the fluids from emitting different light from each other even if a fluid passage is damaged.

Conventionally, heat exchangers for this type of tub have been constructed by connecting flat tubes through which each fluid flows, or by having a triple tube configuration in which n fluids are flowed through the innermost tube and the outermost tube, respectively, and two tubes are connected to the innermost tube. Some heavy-walled pipes were constructed with four leakage vents between the pipe walls or were equipped with a leakage detection device.

The heat exchanger with the above conventional configuration has a heat transfer surface contact configuration using tube materials, and the shape of the entire heat exchanger is also restricted by the bending process of the tubes, so it is not suitable for miniaturization and three-dimensional structure. . In addition, it is difficult to make close contact between tube materials and widen the contact surface, and there is also a limit to the expansion of the heat transfer area of the fluid flowing inside the tube, so the tube diameter and It was necessary to increase the pipe length and configure the entire heat exchanger.

The present invention eliminates the above-mentioned drawbacks of the conventional technology, and makes the fluid passage and the heat transfer surface dense and wide, and also ensures the contact surface between the two fluid passages to improve heat transfer and reduce the size of the three-dimensional structure. The purpose is to prevent mixed flow between two fluids.

To achieve this objective, the present invention has an inlet pipe and an outlet pipe in the inner space of the cylinder, and the pitch of the guide plate that constitutes the entire condensed fluid passage into the gas region and the gas-liquid two-phase region.

A cylindrical body is provided from the inner wall surface and a holding portion is provided from the outer wall surface depending on the state of the liquid region, and a cylindrical body is integrally molded with a thermally conductive material, both end surfaces of the cylindrical body are sealed, and other Since the condenser is constructed by fixing the liquid fluid conduit, the internal space that serves as the passage for the condensed liquid is designed so that the guide plates that make up the passage are arranged at a pitch that will most efficiently transfer heat according to the phase change of the fluid. By providing this, the three-dimensional structure can be made smaller.

In addition, the condensed fluid snakes from the upper part of the facepiece and flows through the inner space to the lower part.The other liquid fluid meanderes from the lower part and flows through the conduit of the holding part of the cylinder at the upper part, thereby improving heat conduction. Heat is easily transferred to the fluid flowing through the conduit that is fixed to the holding part integrally molded with a flexible material, and furthermore, since it is a counter-flow type, an efficient condenser can be obtained.

An embodiment of the present invention will be described below with reference to the drawings.

1 is a cylindrical body; 2 is a guide plate provided from the inner wall surface of the cylindrical body 1;
Reference numeral 3 denotes a holding portion provided from the outer wall surface of the cylindrical body 1, and these are integrally molded from a thermally conductive material.

4.5 are sealing plates on both end faces of the cylinder 1, 6 is a holding portion, a fluid conduit fixed to 3, and 7 is a pipe connected to the cylinder 1.

In the above configuration, the condensed fluid flows into the internal space of the cylindrical body 1 from the inflow pipe 7 in a gaseous state. In the internal space, there is a guide plate 2 that constitutes a passage for the condensed fluid, and the gas flows downward in a meandering manner along this guide plate 2. At this time, cylinder 1
Heat is exchanged with the fluid flowing in a meandering manner from below through a fluid conduit 6 fixed to a holding portion 3 provided from the outer wall surface of the fluid, resulting in a gas-liquid two-phase state. Since the heat transfer coefficients of the gaseous state and the gas-liquid two-phase state are different, the pitch of the guide plate 2, which also serves as a heat transfer surface, is changed in accordance with changes in the state of the condensed fluid so as to optimize the pitch. The amount of condensed fluid increases along this changing guide plate 2, and after being completely liquefied, it exits the cylinder 1 from the lower outlet pipe 8.

In the condenser of the present invention as described above, the passage for the condensed liquid is provided in the internal space of the cylindrical body 1, and the flow passage is constituted by the guide plate 2 which also serves as a heat transfer surface.

In heat exchange of condensed fluid, since the heat transfer coefficient differs due to the phase change of the condensed fluid, it is necessary to optimize the structure of the heat transfer surface on the condensed fluid side in relation to the fluid side that is the target of heat exchange. The pitch of the guide plate 2 is changed according to changes in the state of the gas region-9, the gas-liquid two-phase region, and the liquid region. Therefore, the condenser of the present invention is designed to perform the most efficient heat exchange over the entire area on the condensed liquid side between the fluid flowing through the fluid communication chamber 6 fixed to the holding part 3 provided from the outer wall surface. There is a C.

In addition, the condensed fluid and the fluid that exchanges heat with the condensed fluid form counterflows, with the condensed fluid meandering downward from above and the fluid to be heat exchanged meandering upward from below. The fluid to be heat exchanged effectively exchanges heat with the heat of the cold part of the gas region of the condensed liquid, thereby obtaining a heat exchange fluid temperature higher than the condensation temperature.

As described above, three-dimensional miniaturization is achieved by optimizing the density of the guide plate 2 that constitutes the heat transfer surface on the condensed liquid side of the internal space of the cylinder 1 integrally molded with a thermally conductive material and by configuring the condenser using a counterflow method. can get.

Furthermore, since there is a double wall structure between the condensed liquid and the fluid that exchanges heat with it, and it is open to the atmosphere, even if one of the passage walls is damaged, there will be no flow into the other fluid side. .

As described above, in the condenser of the present invention, the pitch of the guide plate forming the condensed fluid passageway in the internal space of the cylinder having the inflow pipe and the outflow pipe is adjusted to the gas region, gas-liquid two-phase region, and liquid region. A cylindrical body is provided from the inner wall surface depending on the situation, and a holder is provided from the outer wall surface. A cylindrical body is integrally molded with a thermally conductive material, both end surfaces of the cylindrical body are sealed, and another liquid fluid conduit is connected to the holder part. Since it is completely fixed, heat transfer from the condensed fluid side to the inner space of the facepiece [fik
By optimizing the configuration according to changes in the condition, a three-dimensional compact condenser can be obtained, and since the driftwood space that exchanges heat has a double wall structure, even if one wall is damaged, fluids will not mix with each other. It has a remarkable effect.

[Brief explanation of drawings]

FIG. 1 is an external view of a condenser according to an embodiment of the present invention, and FIG.
The figure is a partial vertical cross-sectional view, and FIG. 3 is a partial vertical cross-sectional view in the horizontal direction. 1...Punishment, 2...Information board, 3...
Holding part, 4.6...Sealing plate, 6...Fluid conduit. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 3
figure

Claims (1)

[Claims] The pitch of the guide plate constituting the condensed fluid passage in the internal space of the cylinder having an inflow pipe and an outflow pipe is changed depending on the state of the gas region, gas-liquid two-phase region, and liquid region, and the holding part is installed from the inner wall surface. A condenser in which a cylindrical body provided from an outer wall surface is integrally molded with a thermally conductive material, both end surfaces of the cylindrical body are sealed, and another liquid fluid conduit is fixed to the holding part.