JP2000337734A - Fin tube type condenser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fin tube type condenser capable of improving the condensing capacity. SOLUTION: A heat-exchange part 18 consisting of a plurality of fin plates 20 and heat transfer pipes 20 arranged through the fin plates is disposed in the condenser body 16 of an inclination fin type condenser 10. The fin plates 20 are arranged around the axis of the heat transfer pipe 22 in a state of being inclined at a given angle. Thus, after a condensed refrigerant 28 condensed on the surface of the fin plate 20 perpendicularly flows down between the adjoining heat transfer pipes 22, the condensed refrigerant flows down to the lower end side along a bottom 20B and drips down. This constitution prevents the occurrence of a delay in regeneration of a condensation surface due to adhesion of a condensed refrigerant 28, dripping down from the fin plate 20 on the upper side, to the fin plate 20 on the lower side and regenerates the condensation surface in a short time since a perpendicular drip route is shortened, resulting in improvement of condensation capacity.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a fin tube type condenser.

[0002]

BACKGROUND OF THE INVENTION Problems to be Solved by the Invention
The configuration of a conventional condenser and its problems will be described with reference to FIG.

FIG. 4A shows a tube type condenser 10 in which a plurality of tubes 100 are arranged vertically and horizontally.
2. In the case of the condenser 102, the vaporized refrigerant sent into the condenser 102 exchanges heat with the cooling water flowing through the tube 100 and is condensed on the surface of the tube 100. The condensed refrigerant 104 attached to the surface of the tube 100 drops vertically downward due to its own weight. For this reason, the condensed refrigerant 104 dropped from the tube 100 disposed on the upper side
Adheres to the surface of the tube 100 disposed on the lower side,
Regeneration of the condensation surface (surface) of the lower tube 100 is delayed compared to regeneration of the condensation surface (surface) of the upper tube 100. Therefore, the regeneration efficiency of the entire condenser 102 decreases,
As a result, there is a problem that the condensing ability is reduced.

[0004] FIG. 4B shows a fin plate 11 in which tubes 110 arranged on the left and right are placed horizontally.
2 are fin tube horizontal condensers 114 interconnected by two. In the case of the condenser 114, the vaporized refrigerant cooled by the cooling water is condensed and adheres to the surfaces of the tube 110 and the fin plate 112. Among them, the condensed refrigerant 116 attached to the surface of the fin plate 112
Is dropped after a vertical flow is caused between the adjacent tubes 110 by its own weight. For this reason, the condensed refrigerant 116 dropped from the fin plate 112 disposed on the upper side adheres to the surface of the fin plate 112 disposed on the lower side, and the regeneration of the condensation surface (surface) of the fin plate 112 on the lower side is performed upward. It is delayed compared to the regeneration of the condensation surface (surface) of the fin plate 112 on the side. Therefore, there is a problem that the regeneration efficiency of the entire condenser 114 is reduced, which leads to a reduction in the condensation capacity.

[0005] FIG. 4 (C) shows that fin plates 12 in which tubes 120 arranged vertically are vertically arranged.
2 are fin tube vertical condensers 124 interconnected by two. In the case of the condenser 124, the vaporized refrigerant cooled by the cooling water is condensed and adheres to the surfaces of the tube 120 and the fin plate 122. Among them, the condensed refrigerant 126 attached to the surface of the fin plate 122
Is vertically dropped on both sides in the width direction of the fin plate 122 by its own weight, and finally drops from the lower end portion. The fin plate 122 is not necessarily disposed, so that there is no problem such as a delay in regeneration of the condensation surface (surface) due to the adhesion of the dropped condensation refrigerant 126. However, in the case of the condenser 124, the flow path L when the condensed refrigerant 126 adhering to the surface of the fin plate 122 travels on both sides of the fin plate 122 in the vertical direction becomes longer.
It takes time to regenerate the condensation surface (surface) of the fin plate 122. Therefore, although the reasons are different from those of the former two condensers 102 and 114, the same problem arises as a result that the regeneration efficiency of the entire condenser 124 is reduced, and the condensing capacity is eventually reduced.

The present invention has been made in view of the above circumstances, and has as its object to obtain a fin tube type condenser capable of improving the condensation capacity.

[0007]

According to the present invention, there is provided a condenser body having a vaporized refrigerant inlet into which a high-temperature vaporized refrigerant flows, and a condensed refrigerant outlet from which condensed refrigerant is discharged,
A plurality of fin plates arranged in the condenser main body and arranged at predetermined intervals, and a heat transfer tube provided with a cooling refrigerant inlet and a cooling refrigerant outlet arranged in a state penetrating these fin plates. And a heat exchange unit having the fin plate, wherein the fin plate is disposed so as to be inclined around the axis of the heat transfer tube.

According to the first aspect of the present invention, the heat exchanging portion disposed in the condenser body includes a plurality of fin plates disposed at predetermined intervals, and a plurality of fin plates penetrating the fin plates. And a heat transfer pipe arranged, and a cooling refrigerant flows in from a cooling refrigerant inlet of the heat transfer pipe. The cooling refrigerant that has flowed in cools the plurality of fin plates via the heat transfer tubes and the heat transfer tubes.

On the other hand, a high-temperature vaporized refrigerant flows in from a vaporized refrigerant inlet provided in the condenser body. The inflowing high-temperature vaporized refrigerant exchanges heat with the heat exchange unit and is condensed on the surfaces of the heat transfer tubes and the fin plate. The condensed condensed refrigerant is
The surface of the fin plate is subjected to vertical flow by its own weight. The cooling refrigerant whose temperature has increased due to heat exchange with the high-temperature vaporized refrigerant flows out from the cooling refrigerant outlet of the heat transfer tube.

Here, in the present invention, since the fin plate connected to the heat transfer tube is disposed so as to be inclined around the axis of the heat transfer tube, condensed refrigerant flows between adjacent heat transfer tubes on the surface of the fin plate. From the top to the bottom. The condensed refrigerant that has reached the bottom side of the fin plate further flows down along the inclined bottom side of the fin plate. Thereafter, the condensed refrigerant that has reached the lower end of the bottom of the fin plate drops to the bottom side of the condenser main body and is discharged from the condensed refrigerant outlet of the condenser main body.

As described above, according to the present invention, a plurality of fin plates are arranged so as to be inclined around the axis of the heat transfer tube, so that the condensed refrigerant flowing vertically to the bottom side of the fin plates can flow along the inclined bottom side. As a result, the condensed refrigerant can be prevented from dropping from the upper fin plate to the lower fin plate. Therefore, unlike the conventional condenser, regeneration of the lower fin plate is not hindered.
In addition, in the case of the present invention, since the fin plates are arranged in an inclined state, the flow path of the condensed refrigerant flowing down in a vertical flow is shortened. Therefore, the fin plate is regenerated in a short time. In other words, the effective condensation area of the fin plate can be increased in a short time.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an inclined fin type condenser 10 according to an embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a front view of the inclined fin type condenser 10 according to the present embodiment, and FIG. 2 is a side view of the inclined fin type condenser 10 according to the present embodiment. I have. As shown in these figures, the inclined fin type condenser 10 has a condenser main body 16 having a vaporized refrigerant inlet 12 formed on an upper side and a condensed refrigerant outlet 14 formed on a bottom side.
It has.

A heat exchange section 18 is provided inside the condenser body 16. The heat exchange section 18 is composed of a plurality of fin plates 20 arranged at predetermined intervals and a heat transfer tube 22 that is repeatedly bent and pierced through these fin plates 20 in a direction perpendicular to the plane. I have. One end and the other end of the heat transfer tube 22 are both drawn out to the outside through the side wall of the condenser body 16, and the one end is connected to a cooling water inlet 24 as a “cooling refrigerant inlet”. The other end is a cooling water outlet 26 as a “cooling refrigerant outlet”. In FIG. 2,
Both the cooling water inlet 24 and the cooling water outlet 26 are indicated by arrows.

As shown in FIG. 1, the above-mentioned plurality of fin plates 20 are arranged so as to be inclined at a predetermined angle around the axis of the heat transfer tube 22, which is a feature of the present embodiment.

Next, the operation and effect of this embodiment will be described.

The inclined fin type condenser 10 according to the present embodiment.
The heat exchange part 18 arranged in the condenser body 16 of the first embodiment is composed of a plurality of fin plates 20 arranged at a predetermined interval and a heat transfer tube 22 arranged so as to penetrate these fin plates 20. The cooling water flows from the cooling water inlet 24 of the heat transfer tube 22. The flowing cooling water cools the plurality of fin plates 20 via the heat transfer tubes 22 and the heat transfer tubes 22.

On the other hand, a high-temperature vaporized refrigerant flows from the vaporized refrigerant inlet 12 provided in the condenser body 16. The inflowing high-temperature vaporized refrigerant exchanges heat with the heat exchange unit 18 and is condensed on the surfaces of the heat transfer tubes 22 and the fin plates 20. The condensed refrigerant 28 moves down the surface of the fin plate 20 by its own weight. The cooling water whose temperature has increased due to heat exchange with the high-temperature vaporized refrigerant flows out of the cooling water outlet 26 of the heat transfer tube 22.

Here, in the present embodiment, the fin plate 20 connected to the heat transfer tube 22 is disposed so as to be inclined at a predetermined angle around the axis of the heat transfer tube 22.
As shown in FIG. 3, the condensed refrigerant 28 flows vertically between the adjacent heat transfer tubes 22 on the surface of the fin plate 20 from the upper side 20A to the bottom side 20B (this flow is indicated by a two-dot chain line arrow a in FIG. 3). Is shown). The condensed refrigerant 28 that has reached the bottom 20B side of the fin plate 20 further flows down along the inclined bottom 20B of the fin plate 20 (this flow is indicated by the two-dot chain line arrow A in FIG. 3). Thereafter, the condensed refrigerant 28 that has reached the lower end of the bottom 20B of the fin plate 20 is dropped onto the bottom of the condenser body 16 (FIG. 3).
This flow is indicated by a two-dot chain arrow c).
From the condensed refrigerant outlet 14.

As described above, in the present embodiment, the plurality of fin plates 20 are arranged at a predetermined angle around the axis of the heat transfer tube 22 so that
The condensed refrigerant 28 that has been plumbed down to the bottom 20B side can further flow down along the inclined bottom 20B, so that the condensed refrigerant 28 drops from the upper fin plate 20 to the lower fin plate 20. Can be prevented. Therefore, unlike the conventional condenser, regeneration of the lower fin plate 20 is not hindered. In addition, the inclined fin type condenser 1 according to the present embodiment
In the case of 0, since the fin plate 20 is arranged in an inclined state, the flow path (length of the two-dot chain line arrow A in FIG. 3) when the condensed refrigerant 28 goes down in a vertical flow is shortened. Therefore, the fin plate 20 is regenerated in a short time. In other words, the effective condensation area of the fin plate 20 can be increased in a short time. As a result, according to the inclined fin condenser 10 according to the present embodiment, the condensing ability can be significantly improved.

Further, according to the inclined fin type condenser 10 according to the present embodiment, as described above, since the condensing ability can be remarkably improved, the size and weight of the entire apparatus can be reduced.

In this embodiment, water is used as the cooling refrigerant. However, the present invention is not limited to this, and various heat media can be applied.

Although various materials can be applied to the fin plate 20 in the present embodiment, a fin plate made of copper is preferable from the viewpoint of thermal conductivity and surface area.

Further, in the present embodiment, the fin plate 20 is inclined at a predetermined angle around the axis of the heat transfer tube 22.
Here, the “predetermined angle” broadly means an inclination angle at which the bottom side 20B and the top side 20A of the adjacent fin plates 20 do not interfere with each other. More specifically, in addition to the above-described conditions, the path length (length of the two-dot chain line arrow A in FIG. 3) when the condensed refrigerant 28 goes down in the vertical direction becomes the shortest, and the condensed refrigerant 28 moves along the bottom 20B. It can be said that it is more preferable to set the inclination angle to flow down.

[0025]

As described above, in the fin tube type condenser according to the first aspect of the present invention, the fin plate is disposed so as to be inclined around the axis of the heat transfer tube.
It is possible to prevent the lower fin plate from being hindered from being regenerated and to regenerate the fin plate in a short time. As a result, the fin tube type condenser according to the present invention has an excellent effect that the condensing ability can be improved.

[Brief description of the drawings]

FIG. 1 is a front view of an inclined fin condenser according to the present embodiment.

FIG. 2 is a side view of the inclined fin condenser shown in FIG.

FIG. 3 is a drawing for explaining an operation when the inclined fin type condenser according to the present embodiment is used, and is an enlarged front view of a fin plate alone.

FIG. 4 is a schematic configuration diagram showing a heat exchange unit of a conventional condenser.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Inclined fin condenser 12 Vaporized refrigerant inlet 14 Condensed refrigerant outlet 16 Condenser main body 18 Heat exchange unit 20 Fin plate 22 Heat transfer tube 24 Cooling water inlet (cooling refrigerant inlet) 26 Cooling water outlet (cooling refrigerant outlet) 28 Condensed refrigerant

Claims (1)

[Claims] 1. A condenser body having a vaporized refrigerant inlet into which a high-temperature vaporized refrigerant flows, and a condensed refrigerant outlet from which condensed refrigerant is discharged; and a condenser body disposed in the condenser body and arranged at a predetermined interval. A fin tube type configured including: a plurality of fin plates, and a heat transfer section arranged in a state penetrating these fin plates and having a heat transfer tube having a cooling refrigerant inlet and a cooling refrigerant outlet. The condenser according to claim 1, wherein the fin plate is disposed so as to be inclined around an axis of the heat transfer tube.