JP2002323297A - Multiple-flow type condenser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multiple-flow type condenser which prevents occurrence of a refrigerant leakage after a brazing work, a dimensional fault or a brazing filler clogging or the like of the distal end of a refrigerant passage of a tube in a header, in the condenser used in combination with an air conditioner or the like. SOLUTION: The multiple-flow type condenser comprises a dimensional control part, formed at a side plate disposed at the outside of many tubes for communicating with a pair of opposed headers to contact with the outside surface of the header and to be disposed at its distal end, in such a manner that the part of the distal end of the side plate is fixed to the header by an adhering means, such as spot welding or the like, in a state in which the dimensional control part is contacted with the outside surface of the header; and hence the side plate is assembled with the header to bring about a restriction in the rotation movement or the like in the inside direction of the condenser, the dimension of the outside direction and around a vertical axis core of the header to thereby prevent occurrence of the fault, such as the refrigerant leaking after the brazing work, dimensional fault or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-flow condenser used in an air conditioner or the like.

[0002]

2. Description of the Related Art An outline of a conventional multi-flow type condenser will be described with reference to FIGS. FIG. 3 is a front partial view of a multi-flow type condenser used in a conventional air conditioner. FIG. 4 shows an outline of a header which is a main component of the multi-flow type condenser. , (B) is a cross-sectional view taken along line AA of (a), FIG. 5 partially shows an outline of a side plate which is a main component of the multi-flow type condenser similarly to the header, and (a) is Its front view,
(B) is a bottom view of (a), and FIG. 6 is an explanatory view showing an assembled state of a side plate and a header.

[0003] In FIG. 3, reference numeral 1 denotes a condenser.
Is provided with a pair of left and right headers 2 and 3 facing each other, and each of the headers 2 and 3 is provided with a large number of tube insertion holes 21 in the longitudinal direction on one side surface facing each other.

The tubes 4 are fitted into the tube insertion holes 21 between the opposing members, and the plurality of tubes 4 communicate between the pair of left and right headers 2 and 3.

The tubes 4 each have a large number of corrugated fins 5 which are in close contact with each other in a laminated manner, and the outer surfaces of the corrugated fins 5 provided on the upper and lower outermost portions of these tubes 4 have the same shape. The pair of headers 2, which are in close contact with the corrugated fins 5 and extend in parallel with the tube 4,
A side plate 6 connecting the three is provided.

[0006] The plurality of tubes 4 and the pair of left and right headers 2 and 3 are assembled by integral brazing with the tubes 4 inserted into the tube insertion holes 21 of the headers 2 and 3. .

In the condenser 1 assembled in this manner, the refrigerant entering the header 2 or 3 from a refrigerant inlet (not shown) provided in one of the headers 2 and 3 is supplied between the headers 2 and 3. Header 3 or header 2 through each tube 4 which is connected to
And flows out from a refrigerant outlet (not shown) provided on the other header.

The corrugated fins 5 integrally brazed to each tube 4 in the process of flowing the refrigerant through each tube 4
And heat exchange with the air passing through the corrugated fins 5 to be cooled.

In the condenser 1, a pair of left and right headers 2 and 3, a tube 4 and fins 5 arranged between the headers 2 and 3 are integrally brazed to predetermined positions and dimensions. A side plate 6 is also provided on the outer surface of the outermost fin 4 to reinforce the condenser 1 (FIG. 3 shows only the upper one, but the lower side has the same side plate 6). To perform temporary fixing before brazing.

That is, along the side plate insertion hole 22 drilled on one side wall of the header 2 (and the header 3) shown in FIG.
Guides 61 formed at both ends of the side plate 6 shown in FIG. 5 are fitted as shown in FIG. 6, and a convex stopper 62 formed on a part of the guide 61 hits the outer wall surface of the side plate insertion hole 22. Insert up to.

Since the stopper 62 is installed at a predetermined position, the side plate 6 is connected to the header 2 as described above.
3, the headers 2, 3 and the tube 4 are set to predetermined positions and dimensions.

[0012]

However, in the above-described conventional condenser 1, the upper and lower side plates 6 regulate the size of the condenser 1 in one direction inward.
There is no restraining force against the lateral dimension of each of the headers 2 and 3 and the horizontal movement of the headers 2 and 3.

Therefore, during the preparatory work for brazing the temporarily assembled condenser 1 or during the work of transporting the condenser 1 into the furnace, the temporarily assembled headers 2 and 3 move to a predetermined relative position between the headers 2 and 3 and the tube 4. This often resulted in defects such as refrigerant leakage after brazing operation, defective dimensions, and clogging of the distal end of the refrigerant passage of the tube 4 in the headers 2 and 3.

The present invention solves such problems in the conventional multi-flow type condenser, and causes leakage of the refrigerant after brazing operation, dimensional defects, and occurrence of clogging of the front end of the refrigerant passage of the tube in the header. It is an object of the present invention to provide a multi-flow condenser capable of preventing such a problem.

[0015]

Means for Solving the Problems The present invention has been made to solve the above-mentioned problems, and as a first means, a plurality of tubes arranged in parallel communicate between a pair of opposed headers. In addition, in a multi-flow condenser in which a side plate is arranged between the headers outside the same number of tubes, a size regulating portion is formed at the tip of the side plate to abut against an outer surface of the header to perform positioning, Provided is a multi-flow condenser in which a part of the end of the side plate is fixed to the header by an adhesive means such as spot welding in a state where the regulating portion is in contact with the outer surface of the header, and the side plate and the header are assembled. Things.

In other words, according to the first means, the side plate disposed outside the plurality of tubes communicating between the pair of headers is provided with a dimension restricting portion which is positioned at the front end thereof in contact with the outer surface of the header. And fixing the part of the end portion of the side plate to the header by an adhesive means such as spot welding in a state where the same dimension regulating portion is in contact with the outer surface of the header, and assembling the side plate and the header with this. So that
Restrictions occur on the inside dimension, the outside dimension, and the rotational movement of the header around the longitudinal axis of the condenser regulated by the pair of headers, refrigerant leakage after brazing work, dimensional defects and headers. This prevents the clogging of the front end of the refrigerant passage of the tube in the inside of the tube.

According to the present invention, as a second means, a plurality of tubes arranged in parallel communicate with each other between a pair of headers facing each other, and a side plate is arranged between the headers outside the plurality of tubes. In the multi-flow condenser, a stopper is provided at the tip of the side plate to contact the header,
The size is restricted at the position where the stopper and the header abut, and in this state, a part of the tip of the side plate is deformed along the outer surface of the header, and a part of the tip of the deformed side plate and the stopper are formed. The present invention provides a multi-flow condenser in which the side plate is fixed to the header by sandwiching the header, and the side plate and the header are assembled.

In other words, according to the second means, the side plate disposed outside of a large number of tubes communicating between the pair of headers is provided with a stopper at its tip end to come into contact with the header,
With the stopper and the header in contact with each other, a part of the end of the side plate is deformed along the outer surface of the header, and the deformed portion and the topper sandwich the header to fix the side plate to the header. As described above, the side plate and the header are assembled, so that, similarly to the first means, the size of the condenser in the inward direction and the size of the condenser in the outward direction, and the constraint on the rotational movement of the header about the longitudinal axis are generated. It is intended to prevent leakage of the refrigerant after the brazing operation, dimensional defects, and occurrence of clogging at the tip of the refrigerant passage of the tube in the header.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIG. FIG. 1 partially shows the shape of a tip of a side plate of a multi-flow condenser according to the present embodiment and a temporary assembly of the side plate and a header, (a) is a partial top view,
(B) is a partial front view.

In the present embodiment, the basic skeleton of the condenser is the same as that described with reference to FIG. 3 as a conventional device, and a large number of left and right headers facing each other are arranged in parallel. This is a multi-flow condenser in which tubes are communicated, and side plates are arranged between the headers outside the plurality of tubes.

In such a multi-flow condenser, the present embodiment is such that a certain device is added to the connecting portion between the header and the side plate disposed on the outer surface of the upper and lower outermost tubes of the plurality of tubes. is there.

That is, in the present embodiment, 106
Is a side plate, and a guide 1 formed at the tip of the side plate 106
Reference numeral 61 denotes a header 2 (FIG. 1 shows only one header 2; however, there is a header 3 corresponding to the header 2 as described with reference to FIG. 3, and since the header 3 has a symmetrical shape to the header 2, (Not shown) are inserted and fitted along side plate insertion holes 22 formed in one side wall.

Ribs 163 are provided on both sides in the width direction of the side plate 106, and a rib tip 163a of the rib 163 is provided.
Is separated from the bottom surface of the side plate 106 to form an R-shaped surface in accordance with the outer cylindrical curvature of the header 2, and the R-shaped surface forms a dimension regulating portion that abuts against the outer surface of the header 2 for positioning. .

The guide 161 at the tip of the side plate 106
Is inserted into the side plate insertion hole 22 of the header 2, and the rib tip 163 a is brought into contact with the outer surface of the header 2.
06 are spot-welded to the outer side surface of the header 2.

As described above, in the condenser according to the present embodiment, the guides 161 formed at both ends of the side plates 106 mounted on the uppermost portion and the lowermost portion thereof correspond to the header 2 (and the header 3). The rib tip 1 of the side plate 106 fitted along the side plate insertion hole 22 and formed into an R-plane shape corresponding to the outer cylindrical curvature of the header 2 (and the header 3).
63a is the side plate insertion hole 22 of the header 2 (and the header 3).
After the ribs 163a are inserted until they come into contact with the outer side surfaces, the rib tip portions 163a are spot-welded to the side surfaces of the headers 2 and 3 and fixed.

Therefore, according to the present embodiment, when the condenser is temporarily assembled, welding is performed with the center of the header 2 (and the header 3) and the side plates 106 assembled at the uppermost and lowermost portions being aligned. So that the relative position between the header 2 (and the header 3) and the side plate 106 can be brazed at a predetermined position before brazing many tubes between the pair of left and right headers. As a result, problems such as deviation from a predetermined size, refrigerant leakage, and clogging of the tube tip can be solved.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a partial top view partially showing the shape of the tip of the side plate and the temporary assembly of the side plate and the header of the multi-flow condenser according to the present embodiment.

As in the first embodiment, the basic structure of the condenser in this embodiment is also the same as that described with reference to FIG. 3 as a conventional device. A multi-flow condenser in which a plurality of tubes arranged in parallel communicate with each other, and side plates are arranged between the headers outside the plurality of tubes.

In such a multi-flow type condenser, the present embodiment is different from the first embodiment in that the connecting portion between the side plate and the header disposed on the outer surface of the upper and lower outermost members of the plurality of tubes is connected to the header. Is a different and ingenious addition.

That is, in the present embodiment, 206
Is a side plate, and a guide 2 formed at the end of the side plate 206
61 is a side plate insertion hole 22 drilled in one side wall of the header 2
Are fitted along.

Although only one header 2 is shown in FIG. 2 as in the first embodiment, there is a header 3 corresponding to the header 2 as described with reference to FIG. Has a symmetrical shape of the header 2 and is not described here.

The guide 261 is provided with a convex stopper 262 at the center in the width direction, and the side plate 206 is provided with the stopper 262 which is formed in the side plate insertion hole 2 of the header 2 (and the header 3).
2 can be inserted up to a position where it contacts the outer surface.

Ribs 263 are provided on both side portions of the side plate 206 in the width direction, and rib end portions 263a of the ribs 263 are provided.
Is separated from the bottom surface of the side plate 206, and when the guide 261 is inserted into the side plate insertion hole 22 of the header 2 (and the header 3), the inner surface portion of the rib tip 263a becomes the outer portion of the header 2 (and the header 3). , And forms a dimension regulating portion for positioning the side plate 206 with respect to the header 2 (and the header 3).

The guide 261 at the tip of the side plate 206
Is inserted into the side plate insertion hole 22 of the header 2 (and the header 3), and the stopper 262 is inserted until the stopper 262 hits the outer surface of the side plate insertion hole 22 of the header 2 (and the header 3). The portion 263a is bent inward along the outer wall surface of the header 2 (and the header 3) or twisted while the rib tip 263a is bent inward to fix the side plate 206 to the header 2 (and the header 3).

As described above, in the condenser according to the present embodiment, the guides 261 formed at both ends of the side plates 206 mounted on the uppermost portion and the lowermost portion are the same as those in the first embodiment. Is inserted along the side plate insertion hole 22 of the header 2 (and the header 3), and is inserted until the convex stopper 262 provided on the guide 261 hits the side surface of the side plate insertion hole 22 of the header 2 (and the header 3). After that, the rib tip 263a of the side plate 206 is bent inward along the outer wall surface of the header 2 (and the header 3), or the torsion side plate 206 is bent inward while bending the tip 263a inward. It is structured to be fixed to

Therefore, according to the present embodiment, when the condenser is temporarily assembled, the header 2 (and the header 3) and the side plates 206 assembled at the uppermost and lowermost portions are aligned with the center of the side plate. Since the rib tip portion 263a of the 206 is bent inward or twisted while being bent inward, the relative position between the header 2 (and the header 3) and the side plate 206 is shifted before the condenser 1 is brazed. It can be securely brazed without any problem, and problems such as deviation from a predetermined size, refrigerant leakage, and clogging of the tip of the tube 4 can be solved.

Although the present invention has been described with reference to the illustrated embodiment, the present invention is not limited to such an embodiment.
It goes without saying that various changes may be made to the specific structure within the scope of the present invention.

[0038]

As described above, according to the invention described in claim 1 of the present application, a plurality of tubes arranged in parallel communicate between a pair of opposed headers, and the outside of the plurality of tubes is connected to the header. In a multi-flow condenser in which a side plate is arranged between headers, a dimensional control portion is formed at the end of the side plate so as to abut against the outer surface of the header, and the dimensional control portion is applied to the outer surface of the header. In a state where the side plates are in contact with each other, a part of the end portion of the side plate is fixed to the header by an adhesive means such as spot welding,
Since the side plate and the header are assembled to constitute a multi-flow type condenser, by the assembly of the side plate and the header, an inner dimension, an outer dimension, of the condenser regulated by the pair of headers, and The header is restrained from rotating around the vertical axis, preventing leakage of refrigerant after brazing, dimensional defects, and low-end clogging of the refrigerant passage end of the tube in the header, improving productivity. As a result, a highly reliable multi-flow condenser can be obtained.

According to the second aspect of the present invention, a plurality of tubes arranged in parallel communicate between a pair of opposed headers, and a side plate is provided between the headers outside the plurality of tubes. In the arranged multi-flow condenser, a stopper that comes into contact with the header is provided at the tip of the side plate, and the size is controlled at a position where the stopper and the header come into contact, and in this state, a part of the tip of the side plate is partially removed. A multi-flow condenser that is deformed along the outer side surface of the header, fixes the side plate to the header by sandwiching the header with a part of the tip of the deformed side plate and a stopper, and assembling the side plate and the header. Therefore, by assembling the side plate and the header, the inner dimension and the outer dimension of the condenser, and the rotation of the header about the longitudinal axis as in the first embodiment. Restriction against movement etc. occurs, preventing leakage of refrigerant after brazing work, dimensional defects and low clogging of the refrigerant passage tip of the tube in the header, etc., improving productivity and highly reliable multi-flow A type condenser was obtained.

[Brief description of the drawings]

FIGS. 1A and 1B partially show a tip of a side plate of a multi-flow condenser according to a first embodiment of the present invention and a temporary assembly of the side plate and a header, FIG. 1A is a partial top view, and FIG. Is a partial front view.

FIG. 2 is a partial top view partially showing a tip shape of a side plate of a multi-flow condenser according to a second embodiment of the present invention and a temporary assembly of the side plate and a header.

FIG. 3 is a partial front view of a multi-flow condenser used in a conventional air conditioner.

FIG. 4 shows an outline of a header which is a main component of a conventional multi-flow type condenser, where (a) is a partial side view of the header,
(B) is sectional drawing which follows the AA line of (a).

FIG. 5 partially shows an outline of a side plate which is a main component of a conventional multi-flow type condenser, (a) is a front view thereof,
(B) is a bottom view of (a).

FIG. 6 is an explanatory view showing an assembled state of the side plate and the header shown in FIGS. 5 and 4.

[Explanation of symbols]

 Reference Signs List 1 condenser 2, 3 header 4 tube 5 corrugated fin 6 side plate 21 tube insertion hole 22 side plate insertion hole 61 guide 62 stopper 106 side plate 161 guide 163 rib 163a rib tip 206 side plate 261 guide 262 stopper 263 rib 263a rib tip

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3L065 BA09 BA15 3L103 AA01 AA40 BB33 BB42 CC17 CC22 DD12 DD34 DD42 DD54

Claims (2)

[Claims] 1. A multi-flow condenser wherein a plurality of tubes arranged in parallel communicate between a pair of headers facing each other, and a side plate is arranged between the headers outside the plurality of tubes. A dimensional control portion is formed at the end of the header to abut on the outer surface of the header for positioning, and a part of the end of the side plate is spot-welded while the dimensional control is in contact with the outer surface of the header. Characterized in that the side plate and the header are assembled by being fixed to a header by an adhesive means. 2. A multi-flow condenser in which a plurality of tubes arranged in parallel communicate between a pair of headers facing each other and a side plate is arranged between the headers outside the plurality of tubes. A stopper that comes into contact with the header is provided at the distal end of the header, and dimension control is performed at the position where the stopper and the header abut, and in this state, a part of the distal end of the side plate is deformed along the outer surface of the header, A multi-flow condenser wherein the side plate is fixed to the header by sandwiching the header with a part of the tip of the deformed side plate and a stopper, and the side plate and the header are assembled.