CN100404994C

CN100404994C - Manufacture of heat exchangers

Info

Publication number: CN100404994C
Application number: CNB2005100789992A
Authority: CN
Inventors: 爱敬孝; 小西和成
Original assignee: Toshiba Mitsubishi Electric Industrial Systems Corp
Current assignee: Toshiba Mitsubishi Electric Industrial Systems Corp
Priority date: 2004-06-22
Filing date: 2005-06-22
Publication date: 2008-07-23
Anticipated expiration: 2025-06-22
Also published as: JP4322743B2; JP2006010104A; CN1712877A

Abstract

A manufacture of heat exchangers to simplify the fixing work of a number of pipes to a cooler box and to shorten a work time. A heat exchanger 12 is fixed by inserting the number of pipes 11 into holes formed on walls 21a, 21b at both sides of the cooler box 21. Each of the number of pipes 11 is fixed to the wall 21a at one side of the cooler box 21 by being driven into the hole formed on the wall 21a of the cooler box 21 at its one end and reduced its diameter of a tip end part. Then a diameter of the other end part of the pipe 11 is expanded by a pipe expander 5 corresponding to a hole formed on the other wall 21b to be fixed to the other wall 21b of the cooler box 21. Thus the pipe expanding work can be reduced.

Description

The manufacture method of heat exchanger

Technical field

The present invention relates in the cooler case, dispose the manufacture method of the heat exchanger of a plurality of pipes.

Background technology

Usually, in electric rotating machine, have cooling device, be used for eliminating heat from generations such as coils.For big-and-middle-sized electric rotating machine, on the top of electric rotating machine main body heat exchanger is set, the heating with in the air cooling electric rotating machine main body guides to this air heat exchanger and carries out heat exchange, turns back in the electric rotating machine main body again, so circulates.

The common structure of heat exchanger is, is provided with a plurality of pipes in the cooler case, and dividing has by the cooling medium path in the cooler case and by the cooling medium path in a plurality of pipes.

Fig. 4 and Fig. 5 are process chart, the operation the during manufacturing of the existing heat exchanger of expression.Heat exchanger 1 constitutes, and is provided with a plurality of pipes 3 in cooler case 2.A plurality of pipes 3 are inserted logical being set in place in the wall 2a of cooler case 2 both sides of heat exchanger 1, the hole on the 2b and being fixed.When making this heat exchanger 1, as shown in Figure 4, at first make a plurality of pipes 3 connect the hole of the wall 2b in the diagram left side that is arranged at cooler case 2, and insert the logical hole that is arranged at the wall 2a of opposition side.

Then, as amplifying shown in the A portion, will insert between the adjacent leading section of pipe 3 of wall 2a on the diagram right side that has led to cooler case 2, and temporary fixed by the anchor clamps clamping.At this moment, as amplifying shown in the B portion, the other end of the pipe 3 in diagram left side is relatively arranged on the hole on the wall 2b of cooler case 2 and keeps state freely.

Thereafter, as shown in Figure 5, become the leading section of the free-ended pipe 3 in diagram left side relatively, as amplifying shown in the C portion, use pipe expander (expander) 5 to enlarge the operation (expander operation) of leading section diameter, the leading section of each pipe 3 is fixed in respectively on the wall 2b of cooler case 2.

To inserting the leading section of the pipe 3 that leads to the wall 2a that illustrates the right side,, take off anchor clamps 4 then, similarly use pipe expander 5 to enlarge the operation of leading section diameter with the leading section that illustrates the left side, and be fixed on the wall 2a of cooler case 2 as amplifying shown in the D portion.

Yet the manufacture method of this heat exchanger 1, exist because the quantity of pipe 3 is many, workload that expander is carried out at both ends greatly thereby cause the problem of more time of needs.And, need carry out expander operation omission or the bad check operation of expander operation to pipe 3, these operations are also existed the problem of a lot of times of needs.

In addition, owing to the both ends expander to pipe 3 is fixed, therefore be arranged at the wall 2a of cooler case 2, the hole of 2b, be set to diameter greater than pipe 3, the idle running of pipe 3 in order to prevent to carry out the expander operation at first, need use anchor clamps 4 with respect to a side of carrying out this expander operation and an opposite side and the operation of the leading section of fixing tube 3, with and subsequent the operation of taking off anchor clamps 4.

Summary of the invention

By being made, its purpose is to provide a kind of fixed operation that can simplify a plurality of pipes of relative cooler case, can shortens the manufacture method of the heat exchanger of activity duration in order to address the above problem in the present invention.

In order to solve above-mentioned problem, manufacture method according to heat exchanger of the present invention, this heat exchanger is a plurality of pipes are inserted the hole on the wall lead to the both sides of being located at the cooler case and to fix, in the manufacture method of heat exchanger of the present invention, squeeze into an end of a plurality of pipes in the hole of being located at a wall of described cooler case and dwindle the diameter of its leading section, thereby a plurality of pipes are fixed on the wall of cooler case; Then, make the other end of pipe cooperate and enlarge the diameter of its leading section by pipe expander, thereby a plurality of pipes are fixed on another wall of described cooler case with the hole of another wall of being located at the cooler case.

The effect of invention

According to the present invention, be fixed on the wall of cooler case by an end of a plurality of pipes being squeezed into and being carried out the draw, therefore when the diameter operation of the other end of on another wall, carrying out enlarged tube, do not need to be used to prevent the loading and unloading of the anchor clamps of pipe idle running, whether and the leading section by confirming pipe is through the draw and outstanding from wall, thereby be easy to confirm to exist fixed operation omission or draw operation bad.And because the leading section of a plurality of pipes is carried out expander and fixing expander operation, only carry out, therefore can reduce expander operation omission or the bad industry of taking as really of expander operation at one-sided wall.

Description of drawings

Fig. 1 is the part section front view of full-closed external fan shape electric rotating machine that expression has the heat exchanger of one embodiment of the invention.

Fig. 2 is the process chart of operation of the manufacture method of expression heat exchanger shown in Figure 1.

Fig. 3 is the process chart of hookup 2 parts of operation of the manufacture method of expression heat exchanger shown in Figure 1.

Fig. 4 is the process chart of the existing heat exchanger of expression when making.

Fig. 5 is the process chart of hookup 4 parts of operation of the manufacture method of the existing heat exchanger of expression.

The specific embodiment

Fig. 1 is the part section front view of full-closed external fan shape electric rotating machine that expression has the heat exchanger of one embodiment of the invention.Fig. 2 and Fig. 3 are the process charts of the operation when representing heat exchanger manufacturing shown in Figure 1.In Fig. 1, full-closed external fan shape electric rotating machine is constituted as, and is provided with the heat exchanger 12 that sets a plurality of pipes 11 on the top of electric rotating machine main body 10.Electric rotating machine main body 10 has stator 14 that is fixed in the container 13 and the rotor 15 that is arranged at these stator 14 inboards.The rotating shaft 15a of rotor 15, rotation freely is supported on bearing 16a, the 16b of the carriage 13a, the 13b that are located at container 13.Side at rotating shaft 15a is provided with the interior wing 17 that is positioned at container 13, is provided with the exterior wing 18 that is positioned at outside the container 13 at opposite side.

Interior wing 17 is sent into the air that is used to cool off the heat that stator 14 and rotor 15 produce in the heat exchanger 12 by rotation, the air of cooling turns back to (shown in the dotted arrow) in the container 13 again by circulating heat exchanger 12 in.Exterior wing 18 is located at relative container 13 and in the suction side passage 19 divided, the rotation by exterior wing 18, sends in the pipe 11 in the heat exchanger 12 and after the air in the cooling heat exchangers 12, arrange blow to externally (shown in the solid arrow) via the discharge wing passage 20 of being located at heat exchanger 12 sides via suction side passage 19.

Structure in the heat exchanger 12 is, in cooler case 21, be provided with a plurality of pipes 11, a plurality of pipes 11, insert the hole on the logical wall of being located at cooler case 21 both sides and be fixed, and divide and have by cooling medium path in a plurality of pipes 11 and the cooling medium path that passes through by the air of electric rotating machine main body 10 coolings.

This heat exchanger 12 is manufactured as shown in Figures 2 and 3.At first, in Fig. 2, on wall 21a, the 21b of the both sides of cooler case 21, form a plurality of holes (being through hole).The diameter in the hole of wall (another sidewall) 21b in setting diagram left side is more bigger than the external diameter of pipe 11, and the diameter in the hole of wall (sidewall) 21a on diagram right side is more smaller than the external diameter of pipe 11.In addition, to the hole of wall 21a on diagram right side, preferably cooler case 21 inboard peripheries are carried out chamfering in advance.

This cooler case 21 inserts a plurality of pipes 11 in turn from the diagram left side.Each pipe 11 is inserted in the hole of wall 21b in diagram left side and is supported, and illustrates the hole of chamfering of the wall 21a on right side relatively, keeps the state that joins shown in the E portion as amplifying.Under this state, the leading section in the diagram of relative pipe 11 left side is as amplifying shown in the E portion, insert the bolt 22 of T font, squeeze into another leading section of pipe 11 with hammer 23, as amplify shown in the G portion, reduced is for outstanding and be fixed in wall 21a from wall 21a less than the aperture of wall 21a.In turn each pipe 11 is carried out draw operation to this pipe 11.

Then, in Fig. 3,, as amplifying shown in the H portion, enlarge the diameter of leading sections and be fixed on the wall 21b by pipe expander 5 for the leading section of the pipe 11 on the wall 21b in the diagram left side that is supported on cooler case 21.In turn each pipe 11 is carried out expander operation to this pipe 11.

By such manufacturing heat exchanger 12, for each pipe 11, by squeezing into another end and the draw being carried out in an end, and be fixed on the sidewall 21a of cooler case 21, therefore when on another wall 21b, carrying out the expander operation of leading section diameter of enlarged pipe 11, do not need to be used to prevent the loading and unloading of the anchor clamps of pipe 11 idle running.And, carry out the draw by the leading section of confirming pipe 11 and make it outstanding, thereby can be easy to confirm whether to exist fixed operation omission or draw operation bad from wall 21a.

In addition to the expander operation of a plurality of pipes 11, only another sidewall 21b to cooler case 21 implements, thereby can reduce for expander operation omission or the bad industry of taking as really of expander operation, generally speaking, can simplify the fixed operation of a plurality of pipe 11 relative cooler casees 21, can shorten the activity duration.

In addition, in the above-described embodiments, the discharge wing passage 20 that is arranged at the diagram right side of cooler case 21 becomes, relative cooler case 21 is structure removably, but when making heat exchanger 12, do not carry out expander operation, therefore to the end on the diagram right side of pipe 11, make this discharge wing passage 20 constitute one, also can become the structure that wall 21a is set in cooler case 21 with cooler case 21.So just can save the handling operation of discharging wing passage 20.

The heat exchanger of present embodiment is not limited to electric rotating machine, is applicable to that also transformer or resistor etc. need the equipment of cooling, and cooling medium also can adopt air cooling medium in addition in addition.

Claims

1. the manufacture method of a heat exchanger, this heat exchanger are a plurality of pipes are inserted the hole on the wall that leads to the both sides that are located at the cooler case and to fix, it is characterized in that,

One end of described a plurality of pipes squeezed in the through hole on the wall that is located at described cooler case and dwindle the diameter of its leading section, thereby described a plurality of pipes are fixed on the wall of described cooler case;

Then, enlarge the diameter of its leading section ordinatedly by the through hole on the pipe expander the other end that makes described pipe and another wall that is located at described cooler case, thereby described pipe is fixed on another wall of described cooler case.

2. the manufacture method of heat exchanger as claimed in claim 1 is characterized in that,

Side relative with another wall to the described through hole of the described wall of the described cooler case of squeezing into described a plurality of pipes implemented chamfering.

3. the manufacture method of heat exchanger as claimed in claim 1 or 2 is characterized in that,

Constitute a described wall in described cooler case, the outer space of this wall constitutes the discharge wing passage.