JP2696654B2 - Heat exchanger receiver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger receiver,
More specifically, the heat exchanger formed by a plurality of heat radiation fins and a plurality of tubes inserted through the heat radiation fins is received by receiving the tubes protruding from one end of the heat exchanger. The present invention relates to a receiver for a heat exchanger that can support the following.

Conventionally, a receiver of this type of heat exchanger is provided with a plurality of pipe expansion mandrels on the back side 9a of a reciprocating member 9 which can be raised and lowered via expansion and contraction of a cylinder 8 as shown in FIG. It is used detachably on the receiver table 16 of the tube expansion device 15 into which the tube 10 is inserted.

That is, the heat exchanger 14 expanded through the expansion device 15 having the above-described configuration inserts the hairpin tube 12 having a substantially U-shaped end portion 12a into a plurality of radiating fins 11. A configuration in which desired end plates 13a and 13b are attached to both ends of the radiation fin 11 through which the pipe 12 is inserted,
In addition, when expanding the tube, the end plate at the one end
13b, the end 12a of the hairpin tube 12 projecting from
The end plates 13a and 13b and the plurality of sheets are supported by press-fitting of the pipe expansion mandrel 10 inserted into the reciprocating member 9 of the pipe expansion device 15 by being supported by the receiver 17 having a concave portion into which the pipe 12a can be fitted. The radiating fins 11 can be integrally fixed by expanding the hairpin tube 12.

[0004]

However, the following problems have been encountered in the receiver used in the above-described conventional pipe expanding apparatus.

That is, in the heat exchanger expanded through the above-described expansion device, a hairpin tube having a plurality of heat-radiating fins having substantially U-shaped ends is arranged in a row in the same direction (not shown). ), Not only those inserted in two rows (not shown) in the same direction, but also the outer diameter and the insertion pattern and the insertion pattern of the hairpin tube according to the part number of the heat exchanger and the specifications of the supplier. Not only are the pitches and the like different from each other, but also the difference is that a step is formed in the end plate on the one end side, and the protruding length of the end of the hairpin tube protruding from the end plate is different.

Accordingly, for example, in the case of expanding heat exchangers in which the end lengths of the hairpin tubes protruding from the end plate on one end side are different from each other, as shown in FIG. Either replace the receiver 17a according to the protruding length of the end of the hairpin tube protruding from the plate, or perform work to remove unnecessary receivers 17b, and a step is formed on the end plate at one end. When expanding the heat exchanger that has been used, it is necessary to interpose a spacer 18 of a predetermined length between the receiver and the receiver base as shown in FIG. As a result, the operation time of the pipe expansion device is significantly impaired, and the productivity and work efficiency of the heat exchanger have been extremely reduced.

The present invention solves all of the above problems, and the length of the end of the hairpin tube projecting from the end plate at one end of the heat exchanger is determined by the length of the hairpin inserted through the heat exchanger. In the case where it differs depending on the row of pipes or when a step is formed on the end plate on one end side, furthermore, the outer diameter, the insertion pattern and the insertion pattern of the hairpin pipe according to the product number of the heat exchanger and the specifications of the supplier. Even if the pitch and the like are different from each other, instantly and reliably receive the end of the hairpin tube protruding from the end plate on one end side of the heat exchanger without performing any replacement or removal work of the receiver or the spacer. It is an object of the present invention to provide an extremely excellent heat exchanger receiver that can support the heat exchanger.

[0008]

That is, the present invention relates to a receiver of a heat exchanger for receiving an end portion 12a of a tube 12 inserted into a radiation fin 11 of a heat exchanger 14, the receiver body comprising:
1a is formed by a plurality of elastic members 1b, and the elastic member 1b
At least one is provided so as to face the tube 12 and to be movable along the direction in which the tube 12 is inserted.

[0009]

In the heat exchanger receiver having the above structure, the receiver main body 1a is formed by a plurality of elastic bodies 1b, and at least one of the elastic bodies 1b faces the pipe 12 so as to face the pipe 12. The end plate 13b at one end of the heat exchanger 14 is provided so as to be movable in the insertion direction of the heat exchanger 14.
Irrespective of the outer diameter of the end portion 12a of the hairpin tube 12 protruding from the end, the insertion pattern, the insertion pitch, etc., the end portion 12a of the protruding hairpin tube 12 is surely formed by cave deformation having restoring force of a plurality of elastic bodies. In addition to being able to support, even when a step is formed on the end plate 13b on one end side, the protruding length of the end portion 12a of the hairpin tube 12 protruding from the end plate 13b may cause the heat exchange. Even when the rows of the hairpin tubes 12 inserted into the container 14 are different from each other, the end portions 12a of the hairpin tubes 12 protruding by the opposing movement of the plurality of elastic bodies can be received and supported.

[0010]

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

Regarding the configuration of the tube expanding apparatus according to one embodiment of the present invention, description of the same parts as those of the conventional tube expanding apparatus will be omitted below.

In FIG. 1, reference numeral 1 denotes a hairpin tube 12 projecting in two rows from the end plate 13b at one end of a heat exchanger (not shown) set in the above-mentioned tube expanding device (not shown).
In addition to showing a receiver unit for supporting each of the end portions 12a, 1a has butadiene rubber as a main component, and a reinforcing agent such as carbon black is added, and the hardness (JIS) 60
7 shows a set of juxtaposed receiver bodies each having an elastic body 1b made of synthetic rubber and having a substantially rectangular parallelepiped shape.

Reference numerals 2 and 2a denote a pair of movable receiver bases each provided with the above-mentioned receiver main body 1a arranged in parallel, and a pair of movable receiver bases are provided on an upper surface of a fixed receiver base 6 provided in the tube expanding device (not shown). Are arranged side by side through the hydraulic cylinders 3 and 3a.

When the movable receiver bases 2 and 2a move upward from the upper surface of the fixed receiver base 6 due to the extension of the rods of the hydraulic cylinders 3 and 3a, the movable receiver bases 2 and 2a move upward. 2A shows a spacer inserted between the fixed receiver base 6 and the fixed receiver base 6, and a spacer is provided to correspond to the movable receiver base 2, 2 a via a spacer hydraulic cylinder 5, 5 a provided on the fixed receiver base 6. A set is provided.

The receiver of the heat exchanger according to the present embodiment has the above-mentioned configuration. Next, a case where the heat exchanger having a step on the end plate is supported by using the receiver will be described.

First, as shown in FIGS. 1 and 2, the rod on the hydraulic cylinder 3a side is extended (arrow A) in accordance with the step of the end plate 13b, whereby the rod of the hydraulic cylinder 3a is extended. Is moved upward.

Next, by extending the rod of the hydraulic cylinder for spacer 5a (arrow B), the spacer 4a attached to the hydraulic cylinder for spacer 5a is moved below the movable receiver base 2a, The end plate having a step can be prevented by being inserted between
The end 12a of the hairpin tube 12 protruding from 13b can be supported.

Thereafter, as described above, the end portion 12 of the hairpin tube 12 projecting from the end plate 13b on one end side of the heat exchanger 14
a is supported by the upper surface of the receiver body 1a made of synthetic rubber, the reciprocating member (not shown) of the pipe expanding device is lowered, and the inserted pipe expanding mandrel (not shown) is subjected to the heat exchange. Hairpin tube which is urged in the direction of movement of the reciprocating member (not shown) by being pressed into hairpin tube 12 of the vessel.
Each of the 12 ends 12a is received via a cave deformation (arrow C) having a restoring force of the receiver main body 1a.

Therefore, the end portion 12a of the hairpin tube 12 can be reliably supported irrespective of the outer diameter, the insertion pattern or the insertion pitch of the end portion 12a of the hairpin tube 12, and the receiver body 1a The end 12a through cave deformation
Therefore, it is possible to reliably prevent deformation, crushing, and the like.

In the above embodiment, the main body of the receiver is mainly composed of butadiene rubber, and the type of the rubber is styrene butadiene rubber, acrylonitrile butadiene rubber, chloroprene rubber, ethylene propylene, fluorine rubber, polysulfide. Rubber or the like may be the main component, or may contain a small amount, and is not limited to natural rubber or synthetic rubber. Further, the synthetic rubber further includes at least any of natural rubber, chloroprene rubber, and butadiene rubber. However, it is not a mandatory requirement of the present invention. In other words, if the elastic body has a restoring force, the material of the receiver body is never limited to rubber. Needless to say, it will not be done.

Further, in the above embodiment, the receiver body made of an elastic body made of rubber is added with a reinforcing agent such as carbon black and has a hardness (JIS) of 60 to 75. The presence or absence of the addition of a reinforcing agent such as carbon black is not limited at all, and the point is that if it has a hardness (JIS) of 60 to 75, the tube can be kept in a better state when expanded. However, it is not necessarily an essential requirement of the present invention, and the hardness (JIS) of the receiver body is not limited in any way.For example, the receiver body made of an elastic body is made of polyurethane, polyvinyl chloride, thermoplastic elastomer, silicon, Polyethylene, polypropylene, acrylonitrile graft copolymer, epoxy resin, may be formed of a resin material such as EVA resin, furthermore, the receiver may be formed of a fiber material, Is be formed it said receiver body is an elastic body, the material of the elastic body, of course in no way limited like properties.

Further, in the above embodiment, the receiver main body is formed in a substantially rectangular parallelepiped shape formed in a substantially rectangular shape so as to simultaneously receive and support all of the hairpin tubes protruding from one end of the heat exchanger. Although it is formed, it is not necessarily limited to a substantially rectangular parallelepiped shape. In short, as long as it has a shape that can simultaneously hold all of the tubes protruding from one end side of the heat exchanger, the upper surface is corrugated or uneven. Shape, the whole receiver body may be trapezoidal, the shape of the receiver body is not limited at all, and the receiver body may face each of a plurality of tubes protruding from one end side of the heat exchanger. May be divided into a plurality.

Further, in the above embodiment, the receiver main body is provided on the upper surface portion of the movable receiver base. For example, the receiver main body is mounted on the movable receiver base so that the receiver main body can be replaced due to deterioration in use. One that is detachably attached via bolts or the like, or may be integrally attached to the movable receiver base via a clamp or the like, or the receiver may not necessarily be provided on the movable receiver base,
For example, the movable receiver base itself may be a receiver body formed of an elastic body.

Further, as shown in FIG. 3, a moving means for moving the movable receiver base above the fixed receiver base is provided with a servomotor 3c and a movable receiver base which can be moved up and down by driving the servomotor 3c. By combining with the telescopic device 7 to be moved, fine adjustment of the moving stroke (arrow D) of the movable receiver stand is possible, and it is possible to convert the moving receiver to an NC so as to correspond to various types of heat exchangers.

Further, in the above embodiment, the arrangement of the receiver body and the movable receiver table may be arranged in a staggered manner.
The quantity is not limited.

Further, in the above embodiment, the means for driving the movable receiver stand and the spacer are not limited to the hydraulic cylinder, but may be an air cylinder or a servomotor.

Further, in the above embodiment, a so-called vertical tube expansion device is used as the tube expansion device provided with the receiver of the heat exchanger, but the invention is not necessarily limited to the vertical tube expansion device. An expansion device may be used, in which a mandrel for expansion can be press-fitted from one end of a tube inserted into a number of radiating fins constituting a heat exchanger. Needless to say, the specific type of the tube expansion device, the tube expansion mechanism, etc. are not limited at all, as long as the tube expansion device is provided with a tube receiver expanded via the mandrel. It is needless to say that the receiver may be attached to a heat exchanger mounting table or a heat exchanger transfer table other than the pipe expansion device, and the use location and the attachment of the receiver are not limited at all.

[0028]

As described above, according to the present invention, the receiver main body is formed of a plurality of elastic bodies, and at least one of the elastic bodies is movable in the direction of insertion of the tube facing the tube. A cave having a restoring force of a plurality of elastic bodies regardless of the outer diameter, the insertion pattern, the insertion pitch, etc. of the end of the hairpin tube protruding from the end plate on one end side of the heat exchanger. Not only can the end of the protruding hairpin tube be reliably supported by the deformation,
Even when a step is formed on the end plate on the one end side, or when the protruding length of the end portion of the hairpin tube protruding from the end plate is different for each row of hairpin tubes inserted into the heat exchanger. Even in this case, it is possible to receive and support the end of the hairpin tube protruded by the opposing movement of the plurality of elastic bodies.

Therefore, the length of the end portion of the hairpin tube protruding from the end plate at one end of the heat exchanger differs depending on the row of the hairpin tubes inserted into the heat exchanger, or the end plate at the one end side. In the case where a step is formed, even if the outer diameter, the insertion pattern, the insertion pitch, etc. of the hairpin tube are different in accordance with the product number of the heat exchanger and the specifications of the supplier, the receiver and the spacer may be different. In addition to being able to instantly and reliably receive the end of the hairpin tube protruding from the end plate at one end of the heat exchanger and support the heat exchanger without performing any replacement or desorption work, Also at the time of expanding the heat exchanger, the end of the tube of the heat exchanger, which is urged in the moving direction of the reciprocating member through the press-fit of the expanding mandrel inserted into the reciprocating member, Elastic body restoration Or is deformed by the seat 窟変 type having a force, leading to have a particular effect that can be reliably held without also kill it.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a receiver of a heat exchanger according to the present invention.

FIG. 2 is a side view showing a use state of a receiver of the heat exchanger of the present invention.

FIG. 3 is a perspective view showing another embodiment of the mobile receiver base having the heat exchanger receiver of the present invention.

FIG. 4 is a front view of a tube expansion device having a conventional heat exchanger receiver.

FIG. 5 is a perspective view showing a state in which a receiver of a conventional heat exchanger is replaced.

FIG. 6 is a partially cutaway side view showing a usage state of a receiver of a conventional heat exchanger.

[Explanation of symbols]

 1 ... heat exchanger receiver 2 ... mobile receiver base 2a ... mobile receiver base

Claims (1)

(57) [Claims] 1. A receiver of a heat exchanger for receiving an end (12a) of a tube (12) inserted through a radiating fin (11) of a heat exchanger (14). Is a plurality of elastic bodies (1b)
And at least one of the elastic bodies (1b) is provided so as to be movable in the insertion direction of the tube (12) in opposition to the tube (12). Receiver.