JPH1123183A - Heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger for easily mounting oppositely at a flowing route of fluid. SOLUTION: In the heat exchanger 1 comprising a plurality of radiating plates 11 installed and assembled in the state that they are crossed with straight tubes 10 of a bent tube obtained by sequentially coupling ends of parallel straight tubes formed in parallel by U-shaped coupling parts, a mounting implement 2 is later mounted by inserting it between adjacent straight tube parts 10 near the coupling part, and mounted at a desired mounting site via the implement 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to, for example,
The present invention relates to a heat exchanger used as an evaporator and a condenser in an air conditioner such as a dehumidifier.

[0002]

2. Description of the Related Art A cool air blower is disclosed in Japanese Patent Publication No.
As disclosed in No. 3784, a main body case containing a refrigeration cycle including an evaporator, a condenser and a compressor,
An inlet and an outlet are opened, and the evaporator is arranged between them, and an inlet and an outlet are opened, and the condenser is arranged between them. The outside air brought into contact with the evaporator is cooled by heat exchange with the refrigerant flowing inside the evaporator, and is blown out into the room through the outlet as cold air, while the refrigerant evaporated by the heat exchange is compressed by the compressor. To make it come into contact with the outside air sucked from the intake port, condensed by the heat radiation to this, send it to the evaporator again, and discharge the warm air generated by the heat radiation to the outside through the exhaust port. It is.

FIG. 7 is a plan view of a heat exchanger conventionally used as an evaporator and a condenser in the above-described cooler. As shown in the figure, the heat exchanger 1 has straight pipe sections 10, 10,... Of bent pipes formed by sequentially connecting ends of U-shaped pipes arranged in parallel with each other by a U-shaped connecting pipe.
And a plurality of thin heat radiating plates 11, 11...

FIG. 8 is a cross-sectional view showing a state where the heat exchanger 1 is mounted. This figure shows the state of attachment as an evaporator in the above-described cooler, and the heat exchanger 1 is provided at a suction port B formed on the peripheral wall of the outer case A.
, Through the filter C, the outside air flows through the gaps between the heat radiating plates 11, 11... 11,
11Attached via a pair of fixtures 3 mounted on the outside of each.

FIG. 9 is an external perspective view of the fixture 3.
As shown in the figure, the fitting 3 is a member having an L-shaped cross section, and fitting holes 30, 30 ... which can be fitted to the straight pipe portion 10 of the bent pipe are provided on one side thereof. Are formed at predetermined intervals, and screw holes 31, 31,... For attachment to the outer case are formed at other sides at appropriate intervals.

[0007] As shown in FIG. 7, the fittings 3 are provided with heat radiation plates 11, 11,... By fitting the straight pipe portions 10 of the bent pipes into fitting holes 30, 30. Similarly, the heat exchanger 1 is mounted on the straight pipe portion 10 of the bent pipe on the outside thereof as shown in FIG.
The other side of the fixture 3 is aligned with the peripheral edge of the suction port B, and setscrews 4, 4,... Are screwed into the screw holes 31, 31,. Installed.

[0007]

As described above, the mounting fixture 3 conventionally used for mounting the heat exchanger 1 is a radiator plate.
11 and 11 are installed on the straight pipe portion 10 of the bent pipe and are integrally assembled to the heat exchanger 1, and there is a problem that this assembly requires time and effort.

The mounting fixture 3 has a predetermined thickness for securing the support rigidity of the heat exchanger 1 in the mounted state, and is attached to the straight pipe portion 10 of the bent pipe together with the heat radiating plates 11, 11,. When erected, the parallel spacing of the straight pipe portions is
Is controlled by the distance between the fitting holes 30, 30 ... formed in the fittings 3, 3 so as not to hinder the installation of the heat radiating plates 11, 11 ... between the fixtures 3, 3. Each fitting hole 30, 30
.. Are required to have high dimensional accuracy in the hole diameter and the separation length between them, and there is a problem that a large number of processing steps are required.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a heat exchanger that can be easily attached to a flow path of a fluid to be subjected to heat exchange. .

[0010]

According to the heat exchanger of the present invention, a plurality of parallel straight pipes are connected to a straight pipe section of a curved pipe by sequentially connecting the ends of the pipes with a U-shaped connecting section. A plurality of heatsinks intersecting each other, and a plurality of heatsinks are provided to face the flow passage of the fluid via a fitting mounted near the connecting portion, and a fluid flowing inside and outside the curved pipe is provided. In the heat exchanger for performing heat exchange via the heat sink between the heat exchanger, the mounting member is configured to be retrofittable by being inserted between the adjacent straight pipe portions in the vicinity of the connection portion. There is a feature.

[0011] In the present invention, the heat exchanger assembled by erection of the heat radiating plate on the bend tube is provided with a mounting device for mounting the heat exchanger on the heat exchanger. It is retrofitted by being inserted between the pipe sections, and the heat exchanger is mounted at a desired mounting position via this mounting tool.

[0012] In addition, the mounting tool may include first and second ribs elastically contacting the outer surfaces of the adjacent straight pipe portions in opposite directions, and a part of the connecting portion and an end face of the heat sink. It includes third and fourth ribs that resiliently contact in opposite directions and a support plate that collectively supports the base ends of these ribs, and the first and second ribs are orthogonal to the axial direction of the straight pipe portion. The movement in the axial direction is restrained by the third and fourth ribs, respectively.

According to the present invention, when the fixture is inserted between the straight pipe portions adjacent to each other, the first and second ribs are provided on the outer surfaces of the straight pipe portions facing each other, and a part of the connecting portion is dissipated. The third and fourth ribs resiliently contact the end face of the plate in opposite directions, respectively, and the attachment is restrained in the axial direction of the straight pipe portion and in a direction perpendicular thereto, and is attached via the attachment. The heat exchanger is securely fixed without moving in any direction relative to the mounting position.

Further, the first and second ribs and / or the third and fourth ribs are provided with retaining projections which engage with respective elastic contact portions on the distal end side and perform a retaining operation of these. It is characterized by the following.

According to the present invention, when the attachment is inserted into the target portion, the retaining projections provided on one or both of the first and second ribs and the third and fourth ribs engage with the respective elastic contact portions. However, the mounting fixture is held by the heat exchanger while maintaining the elastic contact of the ribs, so that the mounting fixture can be easily fixed to the mounting site.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing the embodiments. FIG. 1 is a plan view of a heat exchanger according to the present invention. This heat exchanger 1 is similar to the conventional heat exchanger 1 shown in FIG. Are substantially perpendicularly intersected with the straight pipe portions 10, 10... Of the curved pipes which are sequentially connected by U-shaped connecting pipes 12, 12. The thin heat radiating plates 11, 11...

A feature of the heat exchanger 1 according to the present invention resides in the structure of a fixture 2 used for attaching the heat exchanger 1. The fixture 2 is provided in FIG. One is shown in the vicinity of the connecting portion of the connecting pipe 12 on one side and the other is near the folded portion 13 of the U-shaped tube on the other side, and the former is a straight pipe connected to each other by the connecting portion 12. Between the sections 10, 10, the latter is mounted between the straight pipe sections 10, 10 adjacent to each other between the folded sections 13, 13.

FIG. 2 is an external perspective view of the fixture 2.
As shown in the figure, the fixture 2 is a support plate having a rectangular flat plate shape.
A first rib 21 and a second rib 21 each of which has an operation described later
It is configured as a resin molded product having ribs 22, third ribs 23, and fourth ribs 24 protrudingly provided. At approximately the center of the one surface of the support plate 20, a boss 25 for screwing in the set screw 4 (see FIG. 5) is protruded, and a third rib 23 and a fourth rib
24 is formed at a position facing the outer periphery of the boss portion 25 in the radial direction so as to extend in a direction along one side (short side) of the support plate 20. Has a flat portion flattened along the long side of the support plate 20 on the same side.

The first and second ribs 21 and 22 extend in a direction orthogonal to the projecting positions of the third and fourth ribs 23 and 24, ie,
The bosses 25 are erected on both sides of the boss 25 in a direction along the long side of the support plate 20. Is provided.

On one surface of the support plate 20, fourth ribs 24, 24 having a predetermined width are protruded along both short sides thereof. These are formed separately from the fourth ribs 24 projecting to the outside of the boss portion 25, but have the same function when mounted on the heat exchanger 1 as described later. In the following description, the rib outside the boss portion 25 is referred to as a fourth rib 24 at the center, and the ribs along the short side are referred to as fourth ribs on both sides.
Ribs 24, 24 are distinguished.

The fixture 2 constructed as described above is mounted as follows in the vicinity of the connecting portion formed by the connecting pipe 12 or between the straight pipe portions 10 adjacent to each other in the vicinity of the folded portion 13. By doing so, the heat radiating plates 11, 11
Can be retrofitted to the assembly of the heat exchanger 1 constructed by mounting. FIG. 3 is an enlarged view showing a mounted state near the connecting pipe 12, and FIG. 4 is an enlarged view showing a mounted state near the folded portion 13.

As shown in FIGS. 3 and 1, the mounting fixture 2 is mounted near the connecting pipe 12 when the boss 25 is provided between the straight pipe sections 10, 10 whose ends are connected by the connecting pipe 12. And the first and second ribs 21 protruding from both sides of the boss portion 25.
The side edges of the second ribs 22 are elastically contacted with the outer surfaces of the straight pipe portions 10 and 10 from different sides, and the side edges of the third ribs 23 are elastically contacted with the end surfaces of the heat radiating plate 11. Connect the side edge to the connecting pipe
It is realized by hitting the outer surface of 12 from inside the bend.

The fitting 2 inserted as described above is orthogonal to the axial direction of the straight pipes 10 and 10 due to the elastic return action of the first and second ribs 21 and 22 elastically contacting the straight pipes 10 and 10. The movement in the axial direction is restrained by the elastic return action of the third and fourth ribs 23 and 24 elastically contacting the heat radiating plate 11 and the connecting pipe 12. State can be maintained.

When inserting the first and second ribs,
The retaining protrusions 26 and 27 provided at the tips of the first and second ribs 21 and 22 come into contact with the straight pipe portions 10 and 10 on the respective sides and move with the deformation of the first and second ribs 21 and 22. It returns with the passage of the maximum diameter portion of 10 and 10 and acts to prevent the attachment 2 from coming off from the above-mentioned mounted state. Also, a third elastic contact with the end surface of the heat sink 11
Since the end of the rib 23 is a flat surface that is flattened as described above, the surface pressure at the elastic contact portion between the two is reduced,
The restraint by the synergistic action with the fourth rib 24 can be surely realized while preventing the thin radiator plate 11 from being deformed.

On the other hand, as shown in FIGS. 4 and 1, the attachment 2 is mounted near the folded portion 13, as shown in FIG.
13, the projecting surface side of the boss portion 25 is inserted between the straight pipe portions 10, 10 adjacent to each other, and the side edges of the first and second ribs 21, 22 projecting on both sides of the boss portion 25. Are elastically contacted with the outer surfaces of the straight pipe portions 10 and 10 from different sides, and the side edges of the third ribs 23 are elastically contacted with the end surfaces of the heat radiating plate 11. The side edges are realized by elastically contacting the outer surfaces of the folded portions 13, 13 from inside the bend.

The fitting 2 inserted in this manner is orthogonal to the axial direction of the straight pipes 10, 10 due to the elastic return action of the first and second ribs 21, 22 elastically contacting the straight pipes 10, 10. Third rib that is restricted from moving in the direction of
23 and the fourth ribs on both sides which respectively come into contact with the folded portions 13 and 13
The movement in the axial direction is restrained by the elastic return action with 24, 24, and the mounted state shown in the figure can be maintained.

At this time, the retaining projections 26 and 27 provided at the tips of the first and second ribs 21 and 22 engage with the straight pipe portions 10 and 10 on the respective sides to perform a retaining function. The end of the third rib 23 is a flat surface, and the effect of preventing deformation of the heat radiating plate 11 is obtained as in the mounting state shown in FIG.

FIG. 5 shows the mounting fixture 2 mounted as described above.
FIG. 6 is a sectional view showing an attached state of the heat exchanger 1 according to the first embodiment.
FIG. 6 is a view taken along line VI-VI of FIG. 5. These show the state of attachment as an evaporator in a cooler similarly to FIG. 8, and the heat exchanger 1 is attached to the peripheral edge of a suction port B opened in a vertical position on the peripheral wall of an outer case A. 2 is screwed into the boss 25 by screwing set screws 4, 4... Inserted from the outside into corresponding positions of the peripheral edge, whereby the boss 25 is sucked through the filter C through the suction port B. As shown by the white arrows in FIG. 5, the flow of the outside air is positioned and mounted so as to flow through the gaps between the heat radiating plates 11, 11,.

As shown in FIG. 6, a lower portion of the heat exchanger 1 is provided with a support bracket 5 projecting from the inner surface of the outer case A.
The fitting 2 is supported by inserting the straight pipe portion 10 on the same side into a receiving groove 5a formed with an opening facing upward.
Is performed only in the upper position of the heat exchanger 1, but it goes without saying that the mounting by the mounting device 2 can be similarly performed in the lower position.

The fitting 2 used in the present invention is inserted between the straight pipes 10 adjacent to each other in the vicinity of the U-shaped connecting part (the connecting pipe 12 and the folded part 13).
Heat exchanger 1 assembled by erection of heat sinks 11, 11, ...
It is possible to retrofit to the configuration shown in FIG. 2, and the configuration is not limited to the configuration shown in FIG.

[0031]

As described above in detail, in the heat exchanger according to the present invention, the heat exchanger assembled by radiating the heat radiating plate on the straight pipe portion of the curved pipe is inserted between the straight pipe portions adjacent to each other. As a result, the fitting is retrofitted in the vicinity of the U-shaped connecting portion for connecting them, so that the mounting can be easily performed facing the flow path of the fluid to be subjected to heat exchange. .

The attachment includes first and second ribs which resiliently contact the outer surfaces of the adjacent straight pipe portions in opposite directions, and a part of the connecting portion and an end surface of the heat sink opposite to each other. Since the third and fourth ribs elastically contact each other and the support plate for supporting the base ends of the ribs collectively, the axial length of the straight pipe portion is reduced by being inserted between the straight pipe portions adjacent to each other. The heat exchanger mounted via this fixture can be securely fixed without moving in any direction with respect to the mounting position.

Further, since the first and second ribs and / or the third and fourth ribs are provided with retaining projections, when the mounting tool is inserted into a target portion, the retaining projections are provided with respective bullets. It is retained without engaging with the contact part and getting out,
The present invention has an excellent effect, for example, it can be easily fixed to a mounting portion by the mounting tool.

[Brief description of the drawings]

FIG. 1 is a plan view of a heat exchanger according to the present invention.

FIG. 2 is an external perspective view of a fixture used in the heat exchanger according to the present invention.

FIG. 3 is an enlarged view near a mounting position of a mounting tool.

FIG. 4 is an enlarged view of the vicinity of a mounting position of a mounting tool.

FIG. 5 is a cross-sectional view showing an attached state of the heat exchanger according to the present invention.

FIG. 6 is a view taken along the line VI-VI in FIG. 5;

FIG. 7 is a plan view of a conventional heat exchanger.

FIG. 8 is a cross-sectional view showing a mounting state of a heat exchanger in a conventional heat exchanger.

FIG. 9 is an external perspective view of a fixture used in a conventional heat exchanger.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat exchanger 2 Fixture 10 Straight pipe part 11 Heat sink 12 Connecting pipe 13 Folding part 20 Support plate 21 First rib 22 Second rib 23 Third rib 24 Fourth rib

Claims (3)

[Claims] 1. A structure in which a plurality of parallel heat pipes are connected to each other by a U-shaped connection portion, and a plurality of heat radiation plates are provided across the straight pipe portions of the bent pipes. And is attached to a fluid flow passage through a fitting mounted near the connecting portion, and exchanges heat with the fluid flowing inside and outside the curved pipe through the heat sink. In the heat exchanger to be performed, the fitting is configured so that it can be retrofitted by being inserted between the adjacent straight pipe portions in the vicinity of the connecting portion. 2. The mounting device according to claim 1, wherein the first and second ribs elastically contact the outer surfaces of the adjacent straight pipe portions in opposite directions, and a part of the connecting portion and an end surface of the heat radiating plate in opposite directions. Third and fourth ribs that resiliently contact the base, and a support plate that collectively supports the base ends of these ribs, and the first and second ribs extend in a direction orthogonal to the axial direction of the straight pipe portion. 2. The heat exchanger according to claim 1, wherein the movement in the axial direction is restricted by the third and fourth ribs. 3. 3. The first and second ribs and / or the third and fourth ribs are engaged with respective elastic contact portions on the distal end side thereof to form retaining projections for retaining them. The heat exchanger according to claim 2, further comprising: