JPH06254644A - Receiver of heat exchanger - Google Patents

Abstract

PURPOSE:To support a heat exchanger by instantly and surely receiving an end part of a hair pin tube without changing or attaching and detaching a receiver or a spacer by forming a receiver body of plural elastic bodies, opposing one, at least, of the elastic body against the tube and providing them freely movable along the piercing direction of the tube. CONSTITUTION:In a receiver 1 of a heat exchanger, a receiver body 1a is formed of plural elastic bodies 1b and one of, at least, the elastic body is provided freely movably by being opposed to the tube 12 along the piercing direction of the tube. Then, an end part 12a of a projecting hair pin tube 12 can surely supported with a buckling deformation having a restoring force of the plural elastic bodies 1b without relating to an outer diameter of the end part 12a of a hair pin tube 12a projecting from an end plate 13b of one end side of the heat exchanger 14 or a piercing pattern and a piercing pitch, etc. Further, even in the case where a projecting amount of the hair pin tube 12 is respectively different due to a series of the hair pin tube 12, the end part 12a of the hair pin tube 12 is supported with the opposite movement of plural elastic bodies.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a heat exchanger receiver,
More specifically, the heat exchanger formed by a large number of heat radiation fins and a plurality of pipes inserted into the heat radiation fins receives the pipes projecting from one end side of the heat exchanger. And a receiver of a heat exchanger capable of supporting

Conventionally, a receiver of this type of heat exchanger has a plurality of expanding mandrels on the back surface 9a of a reciprocating body 9 which can be moved up and down through expansion and contraction of a cylinder 8 as shown in FIG. It is detachably used on a receiver stand 16 of a tube expanding device 15 in which 10 is inserted.

That is, in the heat exchanger 14 expanded by the expansion device 15 having the above-described structure, the hairpin tube 12 having the end 12a formed in a substantially U-shape is inserted into the plurality of heat radiation fins 11 and , A structure in which desired end plates 13a and 13b are attached to both ends of the radiation fin 11 through which the tube 12 is inserted,
Moreover, at the time of pipe expansion, the end plate on the one end side
The end 12a of the hairpin tube 12 protruding from 13b is
By supporting the receiver 12a having a concave portion into which the tube 12a can be fitted, the end plates 13a and 13b and the plurality of sheets of the plurality of sheets can be pressed by press-fitting the tube expanding mandrel 10 inserted into the reciprocating body 9 of the tube expanding device 15. The radiating fins 11 can be integrally fixed by expanding the hairpin tube 12.

[0004]

However, the receiver used in the conventional tube expanding apparatus as described above has the following problems.

That is, in the heat exchanger expanded by the expansion device as described above, a plurality of heat dissipating fins each having a hairpin tube whose end portion is formed in a substantially U shape are arranged in a line in the same direction (not shown). ), But also those inserted in two rows (not shown) in the same direction, and the outer diameter and insertion pattern and insertion of the hairpin tube according to the product number of the heat exchanger and the specifications of the supplier. Not only the pitches and the like are different, but the end plates on the one end side are formed with steps, and further, the protruding lengths of the ends of the hairpin tubes protruding from the end plates are different.

Therefore, for example, in the case of expanding a heat exchanger in which the protruding lengths of the ends of the hairpin tubes protruding from the end plate on the one end side are different, as shown in FIG. You must either replace the receiver 17a according to the protruding length of the end of the hairpin tube protruding from the plate or remove the unnecessary receiver 17b, and a step is formed on the end plate on the one end side. When expanding the heat exchanger, it is necessary to interpose a spacer 18 of a predetermined length between the receiver and the receiver stand, as shown in FIG. As a result, the operating time of the pipe expanding device is significantly hindered, and the productivity and work efficiency of the heat exchanger are reduced, which is a very serious problem.

Therefore, the present invention solves all the above problems, and the protruding length of the end portion of the hairpin tube protruding from the end plate on one end side of the heat exchanger is inserted into the heat exchanger. When each tube row is different, or when a step is formed on the end plate on the one end side, further, according to the product number of the heat exchanger and the specifications of the ordering party, the outer diameter of the hairpin tube, the insertion pattern, and the insertion pattern. Even if the pitches are different from each other, the end of the hairpin tube protruding from the end plate on the one end side of the heat exchanger can be received instantly and reliably without performing any replacement or removal work of the receiver or spacer. It is an object of the present invention to provide an extremely excellent heat exchanger receiver capable of supporting 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 heat radiating fin 11 of a heat exchanger 14 in the receiver main body.
1a is formed by a plurality of elastic bodies 1b, and the elastic bodies 1b
At least one of them is provided so as to face the tube 12 and be movable along the insertion direction of the tube 12.

[0009]

In the receiver of the heat exchanger having the above structure, the receiver body 1a is formed by a plurality of elastic bodies 1b, and at least one of the elastic bodies 1b faces the pipe 12 and the pipe 12 Since it is movably provided along the insertion direction of the heat exchanger 14, the end plate 13b on one end side of the heat exchanger 14 is
The end portion 12a of the protruding hairpin tube 12 is securely fixed by the cave deformation having the restoring force of a plurality of elastic bodies regardless of the outer diameter of the end portion 12a of the hairpin tube 12 and the insertion pattern and the insertion pitch. Not only can it be supported, but even if a step is formed on the end plate 13b on the one end side, the protruding length of the end 12a of the hairpin tube 12 protruding from the end plate 13b can be changed by the heat exchange. Even if the rows of the hairpin tubes 12 inserted into the device 14 are different from each other, the ends 12a of the hairpin tubes 12 protruding by the opposing movement of the plurality of elastic bodies can be received and supported.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

With respect to the structure of the tube expanding device according to the embodiment of the present invention, the description of the parts overlapping with those of the conventional tube expanding device will be omitted below.

In FIG. 1, reference numeral 1 denotes a hairpin tube 12 protruding in two rows in front and rear from an end plate 13b at one end of a heat exchanger (not shown) set in the tube expanding device (not shown).
In addition to showing the receiver unit for supporting each of the end portions 12a of the, 1a has a butadiene rubber as a main component, and a reinforcing agent such as carbon black is added, and hardness (JIS) 60
7 shows a pair of receiver main bodies that are arranged side by side and that each have an elastic body 1b made of synthetic rubber and formed into a substantially rectangular parallelepiped shape.

Reference numerals 2 and 2a denote a pair of moving receiver bases provided with the respective receiver main bodies 1a arranged side by side, and a pair is provided on an upper surface of a fixed receiver base 6 provided in the tube expanding device (not shown). The hydraulic cylinders 3 and 3a are arranged in parallel.

Reference numerals 4 and 4a denote the moving receiver bases 2 and 2a when the movable receiver bases 2 and 2a move upward from the upper surface of the fixed receiver base 6 by the extension of the rods of the hydraulic cylinders 3 and 3a. 2a shows a spacer to be inserted between the fixed receiver base 6 and the fixed receiver base 6, and a spacer is inserted between the fixed receiver base 6 and the movable receiver bases 2 and 2a via the spacer hydraulic cylinders 5 and 5a. It is provided in pairs.

The receiver of the heat exchanger according to the present embodiment has the above-mentioned structure. 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 of the hydraulic cylinder 3a is extended (arrow A) in accordance with the step of the end plate 13b, for example, by extending the rod on the hydraulic cylinder 3a side. The mobile receiver base 2a attached to the mobile phone moves upward.

Next, by extending the rod of the spacer hydraulic cylinder 5a (arrow B), the spacer 4a attached to the spacer hydraulic cylinder 5a is moved under the moving receiver base 2a and the fixed receiver base 6. It is possible to prevent the moving receiver stand 2a from descending when it is expanded by inserting it between the end plate and the end plate having a step.
The end portion 12a of the hairpin tube 12 protruding from 13b can be supported.

After that, the end portion 12 of the hairpin tube 12 protruding from the end plate 13b on one end side of the heat exchanger 14 as described above.
With a being supported by the upper surface of the receiver body 1a made of synthetic rubber, the reciprocating body (not shown) of the tube expanding device is lowered, and the inserted tube expanding mandrel (not shown) is heat-exchanged. Hairpin tube which is urged in the moving direction of the reciprocating body (not shown) by being press-fitted into the hairpin tube 12 of the container.
Each of the 12 end portions 12a is received through the cave deformation (arrow C) having the restoring force of the receiver body 1a.

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

In the above embodiment, the receiver main body is composed mainly of butadiene rubber, but the type of the rubber is also styrene butadiene rubber, acrylonitrile butadiene rubber, chloroprene rubber, ethylene propylene, fluororubber, polysulfide. Rubber or the like may be the main component, or may be contained in a small amount, and is by no means limited to natural rubber or synthetic rubber. Further, in the above synthetic rubber, at least natural rubber, chloroprene rubber or butadiene rubber may be used. Although it will have stronger impact resilience due to the inclusion of or, it is not necessarily an essential requirement of the present invention, the point is that the material of the receiver main body is never limited to rubber as long as it is an elastic body having a restoring force. Needless to say, it is not done.

Further, in the above embodiment, the receiver body made of an elastic material made of rubber has a hardness (JIS) of 60 to 75 to which a reinforcing agent such as carbon black is added. Whether or not a reinforcing agent such as carbon black is added is by no means limited, and the point is that if it has hardness (JIS) 60 to 75, it is possible to hold the pipe in a better condition during pipe expansion. ,, not necessarily an essential requirement of the present invention, the hardness of the receiver body (JIS) is by no means limited, for example, the receiver body made of an elastic body, polyurethane, polyvinyl chloride, thermoplastic elastomer, silicone, It may be formed of a resin material such as polyethylene, polypropylene, acrylonitrile graft copolymer, epoxy resin, EVA resin or the like, and 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 so that it can simultaneously receive and support all the hairpin tubes protruding from one end side of the heat exchanger. Although it is formed, it is not necessarily limited to a substantially rectangular parallelepiped shape, and the point is that as long as it has a shape capable of simultaneously holding all of the tubes protruding from one end side of the heat exchanger, the upper surface is corrugated or uneven. The receiver body may have a trapezoidal shape, the shape of the receiver body is not limited, and the receiver body faces each of a plurality of tubes protruding from one end side of the heat exchanger. It may be divided into a plurality of parts.

Further, in the above embodiment, the receiver main body is provided on the upper surface of the mobile receiver base. For example, the mobile receiver base may be replaced so that the receiver main body can be replaced due to deterioration in use. Those which are detachably attached via bolts or the like, and may be integrally attached to the mobile receiver base via clamps or the like, and the receiver does not necessarily have to be provided on the mobile receiver base,
For example, the moving 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 stand above the fixed receiver stand is provided with a servo motor 3c and the movable receiver stand can be raised and lowered by driving the servo motor 3c. By combining with the expanding / contracting device 7 for moving, the moving stroke (arrow D) of the moving receiver base can be finely adjusted, and NC can be made to correspond to a wide variety of heat exchangers.

Further, in the above embodiment, the receiver main body and the moving receiver base may be arranged in a staggered manner, and the receiver main body and the moving receiver base may be arranged at a location.
The quantity is not limited.

Further, in the above embodiment, it goes without saying that the driving means for the movable receiver base and the spacer is not limited to the hydraulic cylinder, but may be an air cylinder or a servomotor.

Further, in the above embodiment, the so-called vertical pipe expanding device was used as the pipe expanding device provided with the receiver of the heat exchanger, but it is not necessarily limited to the vertical pipe expanding device and the horizontal pipe expanding device is used. It may be a pipe expanding device, in short, a pipe expanding mandrel can be press-fitted from one end side of the pipe inserted through a large number of heat radiating fins constituting the heat exchanger, and the pipe expanding mandrel can be attached to the other end side of the pipe. Needless to say, if the pipe expanding device is provided with a receiver for the pipe expanded through the mandrel, the specific form of the expanding device, the expanding mechanism, etc. are not limited at all, or the receiver of the heat exchanger is 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 tube expanding device, and the use location and attachments 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 faces the tube and is movable along the insertion direction of the tube. Since it is provided in the cave with a restoring force of a plurality of elastic bodies regardless of the outer diameter of the end of the hairpin tube protruding from the end plate on the one end side of the heat exchanger, the insertion pattern, the insertion pitch, etc. Not only can the end of the protruding hairpin tube be reliably supported by the deformation, but also
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 in each row of the hairpin tubes inserted into the heat exchanger. Even in this case, the ends of the hairpin tube protruding by the opposing movement of the plurality of elastic bodies can be received and supported.

Therefore, when the protruding length of the end portion of the hairpin tube protruding from the end plate on one end side of the heat exchanger differs depending on the row of the hairpin tubes inserted into the heat exchanger, or on the end plate on the one end side. When a step is formed in the heat exchanger, even if the outer diameter of the hairpin tube, the insertion pattern, the insertion pitch, etc. are different according to the product number of the heat exchanger and the specifications of the supplier, Instantly without any replacement or desorption work, and not only can reliably and reliably receive the end of the hairpin tube protruding from the end plate on the one end side of the heat exchanger, Even at the time of expanding the heat exchanger, the end portion of the tube of the heat exchanger is urged in the moving direction of the reciprocating body through the press-fitting of the tube expanding mandrel inserted in the reciprocating body, 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 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 usage state of the receiver of the heat exchanger of the present invention.

FIG. 3 is a perspective view showing another embodiment of the moving receiver base having the receiver of the heat exchanger 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 when the receiver of the 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)

[Claims] 1. A receiver of a heat exchanger for receiving an end portion (12a) of a pipe (12) inserted through a radiation fin (11) of a heat exchanger (14), the receiver body (1a). Has multiple elastic bodies (1b)
And at least one of the elastic bodies (1b) is provided so as to face the tube (12) and to be movable along the insertion direction of the tube (12). Receiver.