JP2010249498A - Drainage structure of corrugated fin-type heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drainage structure of a corrugated fin-type heat exchanger having sufficient drainage performance of condensed water (dew condensation water) attached to surfaces of heat exchange tubes even if the heat exchange tubes are horizontally disposed and suppressing adverse effects on ventilation resistance and heat exchange efficiency when used as an evaporator. <P>SOLUTION: In the corrugated fin-type heat exchanger 1, the plurality of flat heat exchange tubes 3 in parallel with each other are arranged in the horizontal direction between a pair of opposing header pipes 2a, 2b, and corrugated fins 4 are jointed between the heat exchange tubes 3. Linear water drainage assisting members 10 are arranged along the heat exchange tubes 3 so as to come into contact with the adjacent corrugated fins 4 on the upper and lower sides of the heat exchange tubes 3, and water passages for guiding water droplets adhered to the corrugated fins 4 of the heat exchanger 1 are formed by clearances between the water drainage assisting members 10 and the heat exchange tubes 3. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a drainage structure for a corrugated fin heat exchanger, and more specifically, drainage that improves drainage of a parallel flow heat exchanger in which corrugated fins and flat heat exchange tubes are alternately arranged. Concerning structure.

  Generally, corrugated fin-type heat exchangers are widely used in which a plurality of flat heat exchange tubes parallel to each other are horizontally arranged between a pair of opposing header pipes and corrugated fins are joined between the heat exchange tubes. in use. When this type of corrugated fin heat exchanger is used as an evaporator, condensed water (condensed water) adheres to the surface, increasing the airflow resistance, and further, the water film adhering to the corrugated fin surface acts as a resistance to transfer heat. There is a problem that the heat exchange performance is lowered.

  As a means for solving the above problem, a drainage guide that contacts the corrugated fin is formed on the condensate condensing side by a linear member, and the drainage guide is inclined with respect to the heat exchange tube, and at least one of both ends of the drainage guide. There is known a drainage structure that guides one to the lower end or the side end of a corrugated fin heat exchanger (see, for example, Patent Document 1).

  In the technique described in Patent Document 1, when high drainage is required, it is necessary to dispose many drainage guides such as wires at a relatively narrow pitch.

JP 2007-285673 A (Claims, FIGS. 3, 5 to 16)

  However, in the technique described in Patent Document 1, when high drainage is required, it is necessary to dispose many drainage guides such as wires at a relatively narrow pitch, so the flow of wind passing through the heat exchanger There is a concern that the ventilation resistance is increased.

  The present invention has been made in view of the above circumstances. For example, when used as an evaporator, even when a heat exchange tube is horizontally arranged, the drainage of condensed water (condensed water) adhering to the surface is sufficiently provided. It is an object of the present invention to provide a corrugated fin heat exchanger drainage structure in which adverse effects on the ventilation resistance and heat exchange efficiency are suppressed.

  In order to achieve the above object, a corrugated fin heat exchanger drainage structure according to the present invention has a plurality of flat heat exchange tubes parallel to each other in a horizontal direction between a pair of opposing header pipes. In the corrugated fin heat exchanger formed by joining corrugated fins between the exchange tubes, a linear shape is provided so as to be along the heat exchange tubes and to be in contact with the corrugated fins adjacent to the upper and lower sides of the heat exchange tubes. A drainage auxiliary member is provided, and the drainage auxiliary member forms a water channel for attracting water droplets attached to the heat exchanger (claim 1).

  With this configuration, water droplets attached to the heat exchanger flow through the upper corrugated fins to the drainage auxiliary member disposed along the lower heat exchange tube, and are formed by the drainage auxiliary member. It is discharged to the corrugated fin on the lower side through the water channel.

  In this invention, the drainage auxiliary member can be formed by a wire disposed with a minute gap so as to form a water channel with the heat exchange tube.

  By comprising in this way, the water droplet adhering to a corrugated fin is attracted | sucked to the clearance gap between a drainage auxiliary member and a heat exchange tube, and it is discharged | emitted to the corrugated fin below by using it as a water channel.

  In the present invention, the drainage auxiliary member has a shape in which a plurality of linear materials are formed, and a water channel is formed in a gap between the linear materials, and the gap is a side end of the corrugated fin. It is good also as a structure located inside more (Claim 3).

  By configuring in this way, water droplets attached to the corrugated fins are transmitted from the mountain portion opened in the corrugated shape (mountain-valley shape) to the drainage auxiliary member arranged in the vicinity, and the gap (line) of the drainage auxiliary member itself The gap between the shaped materials is discharged into the corrugated fin on the lower side using a water channel.

  Further, in the present invention, when the drainage auxiliary member is made of a wire or a plurality of linear materials, the drainage auxiliary member is the same as the material constituting the heat exchanger, and It is preferable to adopt a structure in which the heat exchanger is integrally brazed to the heat exchanger (claim 4).

  By configuring in this way, when the drainage auxiliary member is formed of, for example, an aluminum member that is the same material as the heat exchanger, it can be brazed (joined) integrally with the heat exchanger, The production of the heat exchanger can be facilitated.

  In the present invention, the drainage auxiliary member is a yarn or a molding wire, and water droplets attached to the surface of the yarn or the molding wire are attracted to a water film or a water droplet on the surface of the drainage auxiliary member, and a water channel is formed on the surface. (Claim 5).

  By comprising in this way, when a heat exchanger will be in a wet state, a water droplet will adhere to the surface of the woolen thread or a molding wire which forms a drainage auxiliary member, and also a water film will be formed on the surface. Further, the water droplets adhering to the corrugated fins are attracted to the water film or water droplets on the surface of the wool or molding wire forming the drainage auxiliary member, and the surface is used as a water channel, and is discharged to the corrugated fins on the lower side.

  In the present invention, the heat exchanger may be disposed vertically or the upper end side of the heat exchanger may be inclined to the leeward side, and the drainage auxiliary member may be disposed on the leeward side.

  By configuring in this way, the water droplets adhering to the heat exchanger are transferred from the upper corrugated fin to the lower drainage auxiliary member on the leeward side of the heat exchanger as described above. It can be discharged to the lower corrugated fin.

  In the present invention, the heat exchanger may be arranged vertically, or the upper end side of the heat exchanger may be inclined to the leeward side, and the drainage auxiliary member may be arranged on the leeward side and leeward side. ).

  By configuring in this way, the water droplets adhering to the heat exchanger are formed on the windward side and the leeward side of the heat exchanger as described above from the upper corrugated fins by the lower drainage auxiliary member. Can be discharged to the corrugated fin on the lower side.

  In the present invention, the heat exchanger may be arranged vertically or the upper end side of the heat exchanger may be inclined to the windward side, and the drainage auxiliary member may be arranged on the windward side.

  By configuring in this way, the water droplets adhering to the heat exchanger are transferred from the upper corrugated fin to the water channel formed by the lower drainage auxiliary member on the windward side of the heat exchanger as described above. It can be discharged to the lower corrugated fin.

  According to this invention, since it is configured as described above, the following excellent effects can be obtained.

  A linear drainage auxiliary member is disposed along the heat exchange tube and in contact with the corrugated fins adjacent to the upper and lower sides of the heat exchange tube, and water droplets adhering to the heat exchanger are removed by the drainage auxiliary member. By forming an attracting water channel, water droplets adhering to the heat exchanger flow through the upper corrugated fins to the drainage auxiliary member disposed along the lower heat exchange tube, and are formed by the drainage auxiliary member It can be discharged to the lower corrugated fin through the water channel. Therefore, even when the flat heat exchange tube is horizontally arranged, it has sufficient drainage.

  Further, by arranging the drainage auxiliary member along the heat exchange tube, the added drainage auxiliary member itself does not hinder the flow of the wind passing through the heat exchanger, so that the ventilation resistance and the heat exchange efficiency are improved. The adverse effect can be suppressed.

  Furthermore, compared with the case where wires such as wires are arranged obliquely on the surface of the heat exchanger, it is possible to easily assemble the drainage auxiliary member to the heat exchanger and facilitate the production of the heat exchanger. Can do.

It is a partial section perspective view showing a 1st embodiment of a drainage structure of a corrugated fin type heat exchanger concerning this invention. It is an expanded sectional view showing an important section of a 1st embodiment of a drainage structure concerning this invention. It is an expanded sectional view (a) which shows the principal part of 2nd Embodiment of the drainage structure which concerns on this invention, and the side view (b) of (a). It is an expanded sectional view showing an important section of a 3rd embodiment of a drainage structure concerning this invention. It is a schematic side view which shows the form which provided the drainage structure which concerns on this invention in the leeward side of the heat exchanger. It is a schematic side view which shows the form which provided the drainage structure which concerns on this invention in the windward side and leeward side of the heat exchanger. It is a schematic side view which shows the form which provided the drainage structure which concerns on this invention in the windward side of the heat exchanger.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated in detail based on an accompanying drawing.

  As shown in FIG. 1, a corrugated fin heat exchanger 1 according to the present invention includes a pair of header pipes 2a and 2b made of aluminum (including an aluminum alloy) facing each other, and between the header pipes 2a and 2b. A plurality of flat heat exchange tubes 3 laid (connected) in parallel with each other in the horizontal direction and corrugated fins 4 interposed between adjacent heat exchange tubes 3 are brazed. The heat exchange tube 3 is formed with a plurality of divided heat medium passages 3a. Also, aluminum side plates 5 are brazed to the upper outer side and the lower open side of the upper and lower corrugated fins 4, respectively. An end cap 6 made of aluminum is brazed to the upper and lower opening ends of the header pipes 2a and 2b.

  The corrugated fin 4 is provided with a fin louver 4c formed by cutting and raising a plurality of vertical slits provided in parallel to each other in the width direction of the corrugated fin 4 (see FIGS. 2 to 4). Thus, by providing the fin louver 4c in the corrugated fin 4, the heat exchange capacity can be improved, that is, by providing a predetermined number of fin louvers 4c formed at a predetermined angle in the air passage, The heat transfer performance can be improved.

  In the heat exchanger 1 configured as described above, a corrugate adjacent to the upper and lower sides of the heat exchange tube 3 along the heat exchange tube 3 at the side end in the width direction of the heat exchange tube 3 A linear drainage auxiliary member 10 is disposed so as to come into contact with the fins 4, and the drainage auxiliary member 10 forms a water channel that attracts water droplets attached to the heat exchanger 1. In this case, the drainage auxiliary member 10 is formed by one linear wire made of, for example, aluminum or synthetic resin, and a water channel is formed by the gap 11 between the drainage auxiliary member 10 and the heat exchange tube 3. Has been.

The heat exchanger 1 configured as described above is generally integrally brazed (joined) by brazing after assembling the heat exchange tube 3, the corrugated fin 4 and the like between the header pipes 2a and 2b. At this time, when the drainage auxiliary member 10 is formed of an aluminum wire,
In addition to the method of attaching the drainage auxiliary member 10 separately after brazing (joining) the heat exchanger 1 itself as usual, the drainage auxiliary member 10 is also placed along the heat exchange tube 3 and then integrated with the heat exchanger 1. A method of attaching (joining) can be employed. In addition, when the drainage auxiliary member 10 is formed of a synthetic resin wire, the drainage auxiliary member 10 is attached using an adhesive or the like after the heat exchanger 1 itself is brazed (joined).

  According to the drainage structure configured as described above, when the surface of the heat exchanger becomes wet, water droplets attached to the corrugated fins 4 are attracted to the gap 11 between the drainage auxiliary member 10 and the heat exchange tube 3, and the gap 11 is discharged to the corrugated fin 4 on the lower side using a water channel. Similarly, the water droplets attached to the corrugated fins 4 are sequentially discharged to the corrugated fins 4 on the lower side.

  Although the said 1st Embodiment demonstrated the case where the drainage auxiliary member 10 was formed with one wire, you may use the drainage auxiliary member of another shape.

  For example, in the second embodiment shown in FIG. 3, the drainage auxiliary member 20 has a shape in which a plurality of, for example, two to three (in the drawing, three cases are shown) aluminum linear materials 21 are rolled up, A water channel is formed in the gap 22 between the linear materials 21. In this case, the gap 22 is located inside the side edge of the corrugated fin 4.

  According to the second embodiment configured as described above, the water droplets adhering to the corrugated fin 4 are, as shown in FIG. 3 (b), the crest 4a opened in a corrugated shape, that is, a crest 4a-valley 4b. From this part, it is transmitted to the drainage auxiliary member 20 arranged in the vicinity, and is discharged to the corrugated fin 4 on the lower side using the gap 22 between the drainage auxiliary member 20 itself, that is, the gap 22 between the linear materials 21 as a water channel. Similarly, the water droplets attached to the corrugated fins 4 are sequentially discharged to the corrugated fins 4 on the lower side.

  Moreover, in the said 1st Embodiment and 2nd Embodiment, after forming the drainage auxiliary member 10 (20) with the wire made from aluminum, after making the drainage auxiliary member 10 (20) follow the heat exchange tube 3, It is brazed (joined) integrally with the heat exchanger 1.

  Moreover, in 3rd Embodiment shown in FIG. 4, the drainage auxiliary member 30 is formed with the wool or the molding wire, and adhered to the fluffy surface of the drainage auxiliary member 30 formed with this yarn or the molding wire. Water droplets are attracted to the water film or water droplets on the surface of the drainage auxiliary member 30, and a water channel is formed on the surface.

  According to 3rd Embodiment comprised in this way, when the heat exchanger 1 will be in a wet state, a water droplet will adhere to the surface of the yarn or the molding wire which forms the drainage auxiliary member 30, and also a water film on the surface Is formed. Further, the water droplets adhering to the corrugated fins 4 are attracted to the water film or water droplets on the surface of the wool or molding wire forming the drainage auxiliary member 30, and the surface is used as a water channel, and is discharged to the corrugated fins 4 on the lower side. Similarly, the water droplets attached to the corrugated fins 4 are sequentially discharged to the corrugated fins 4 on the lower side.

  In addition, in said 2nd Embodiment and 3rd Embodiment, since another part is the same as 1st Embodiment, the same code | symbol is attached | subjected to the same part and description is abbreviate | omitted.

  The heat exchanger 1 having the drainage structure according to the present invention configured as described above can be used in the following state.

  For example, as shown in FIG. 5, the heat exchanger 1 is vertically arranged or the upper end side of the heat exchanger 1 is inclined to the leeward side, and the drainage auxiliary members 10, 20, 30 (represented by reference numeral 10 below) are arranged. It can be used on the leeward side.

  With this configuration, water droplets attached to the heat exchanger 1 are formed on the leeward side of the heat exchanger 1 by the lower drainage auxiliary member 10 from the upper corrugated fin 4 as described above. It can be discharged to the corrugated fin 4 on the lower side through the water channel.

  Further, as shown in FIG. 6, the vertical arrangement or the upper end side is inclined to the leeward side, and the drainage auxiliary member 10 can be used on the leeward and leeward side.

  By configuring in this way, the water droplets adhering to the heat exchanger 1 are separated from the upper corrugated fin 4 by the lower drainage auxiliary member 10 on the windward side and leeward side of the heat exchanger 1 as described above. It can discharge | emit to the corrugated fin 4 of the lower side along the water channel formed.

  Further, as shown in FIG. 7, the heat exchanger 1 can be used in a vertical arrangement, or the upper end side of the heat exchanger 1 is inclined to the windward side, and the drainage auxiliary member 10 is arranged on the windward side.

  With this configuration, water droplets attached to the heat exchanger 1 are formed on the windward side of the heat exchanger 1 by the lower drainage auxiliary member 10 from the upper corrugated fin 4 as described above. It can be discharged to the corrugated fin 4 on the lower side through the water channel.

  According to the drainage structure of the first to third embodiments configured as described above, the corrugated fins 4 adjacent to the upper and lower sides of the heat exchange tube 3 are brought into contact with the heat exchange tube 3. A linear drainage auxiliary member 10 (20, 30) is disposed, and the drainage auxiliary member 10 (20, 30) forms a water channel, that is, a gap 11 (22) that attracts water droplets attached to the heat exchanger 1. Thus, the water droplets adhering to the heat exchanger 1 are caused to flow along the upper corrugated fins 4 and to the drainage auxiliary members 10 (20, 30) disposed along the lower heat exchange tube 3, and the drainage auxiliary members It can be discharged to the corrugated fin 4 on the lower side through the gap 11 (22) formed by 10 (20, 30). Therefore, even when the flat heat exchange tube 3 is horizontally arranged, it has sufficient drainage.

  Moreover, since the drainage auxiliary member 10 (20, 30) is disposed along the heat exchange tube 3, the added drainage auxiliary member itself does not hinder the flow of wind passing through the heat exchanger 1. In addition, adverse effects on the ventilation resistance and the heat exchange efficiency can be suppressed.

  Furthermore, the drainage auxiliary member 10 (20, 30) can be easily assembled to the heat exchanger 1 as compared with the case where wires such as wires are arranged obliquely on the surface of the heat exchanger, and the drainage When the auxiliary member 10 (20) is formed of an aluminum wire, the auxiliary member 10 (20) can be brazed (joined) integrally with the heat exchanger 1, so that the heat exchanger 1 can be easily manufactured.

  In the above embodiment, the case where the drainage structure according to the present invention is applied to an evaporator has been described. However, in the parallel flow type corrugated fin type heat exchanger other than the evaporator, the present invention is a case where a heat exchange tube is horizontally disposed. However, it has sufficient drainage properties of water droplets adhering to the surface and can suppress adverse effects on the ventilation resistance and heat exchange efficiency.

DESCRIPTION OF SYMBOLS 1 Heat exchanger 2a, 2b Header pipe 3 Heat exchange tube 4 Corrugated fin 10 Drainage auxiliary member 11 Crevice 20 Drainage auxiliary member 21 Linear material 22 Gap 30 Drainage auxiliary member (wool yarn, molding wire)

Claims (8)

In a corrugated fin type heat exchanger in which a plurality of flat heat exchange tubes parallel to each other are arranged in a horizontal direction between a pair of opposing header pipes, and corrugated fins are joined between the heat exchange tubes,
A linear drainage auxiliary member is disposed along the heat exchange tube and in contact with the corrugated fins adjacent to the upper and lower sides of the heat exchange tube, and the drainage auxiliary member allows the heat exchanger to It forms a water channel that attracts attached water droplets,
A drainage structure for a corrugated fin heat exchanger. In the drainage structure of the corrugated fin heat exchanger according to claim 1,
The drainage structure of a corrugated fin heat exchanger, wherein the drainage auxiliary member is a wire disposed with a minute gap to form a water channel with the heat exchange tube. In the drainage structure of the corrugated fin heat exchanger according to claim 1,
The drainage auxiliary member has a shape in which a plurality of linear materials are formed, is formed with a water channel in a gap between the linear materials, and the gap is located on the inner side of the side edge of the corrugated fin. A drainage structure for a corrugated fin type heat exchanger. In the drainage structure of the corrugated fin heat exchanger according to claim 2 or 3,
The drainage structure for a corrugated fin heat exchanger, wherein the drainage auxiliary member is the same as the material constituting the heat exchanger and is integrally brazed to the heat exchanger. In the drainage structure of the corrugated fin heat exchanger according to claim 1,
The drainage auxiliary member is a yarn or a molding wire, and water droplets adhering to the surface of the yarn or molding wire are attracted to a water film or a water droplet on the surface of the drainage auxiliary member to form a water channel on the surface. The corrugated fin heat exchanger drainage structure. In the drainage structure of the corrugated fin heat exchanger according to any one of claims 1 to 5,
The corrugated fin heat exchanger drainage, characterized in that the heat exchanger is vertically arranged or the upper end side of the heat exchanger is inclined to the leeward side, and the drainage auxiliary member is arranged on the leeward side. Construction. In the drainage structure of the corrugated fin heat exchanger according to any one of claims 1 to 5,
Corrugated fin type heat exchange, characterized in that the heat exchanger is arranged vertically or the upper end side of the heat exchanger is inclined to the leeward side, and the drainage auxiliary member is arranged on the leeward side and leeward side. The drainage structure of the vessel. In the drainage structure of the corrugated fin heat exchanger according to any one of claims 1 to 5,
Drainage of a corrugated fin heat exchanger, characterized in that the heat exchanger is vertically arranged or the upper end side of the heat exchanger is inclined to the windward side, and the drainage auxiliary member is arranged on the windward side. Construction.

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