JPS5930471A - Pipe connecting method of refrigerating apparatus - Google Patents

Abstract

PURPOSE:To execute welding which causes no leak failure, by outer-fit-fixing a pipe made of a material whose melting point is lower than that of a material of a connecting part of a refrigerator, to this connecting part, and melting the pipe by an electrode turning round the outside circumference of the pipe, and the connecting part. CONSTITUTION:A copper pipe 13 is outer-fit-fixed to an iron pipe 12 provided on a connecting part 11 of a compressor casing 10, a depositing device is installed to the copper pipe 13, is set so that an electrode rod 19 is positioned on the outside face of the connecting part of the copper pipe 13, and simultaneously, the earth is connected to the iron pipe 12. when electrification is performed in this state, a motor 18 is started, an operating part 17 turns, simultaneously, the electrode rod 19 operates, and the copper pipe 13 is melted by an arc generated from the electrode rod 19. The electrode rod 19 is tightly provided on the operating part 17, therefore, it moves together with the operating part 17, the copper pipe 13 is melted extending over the whole circumference of the copper pipe 13, and by this melting, the copper pipe 13 and the iron pipe 12 are deposited.

Description

Detailed Description of the Invention [Technical Field of the Invention 1] [Technical field of the invention] The present invention relates to a vibrator connection method for connecting a pipe f to a refrigeration equipment, such as a closed type co/brezzar or a heat exchanger. Background and points of interest J 7 The seventh table work connects the pipe to the closed type compressor/breather. #1\1 As shown in the figure, connect the crotch 1 to the compressor casing 1 and the end of the pipe 3 to the connection part 2. Insert and squeeze part 5C of silver filter material and filter between pipe 3 and connection part 2 -414
However, in this case, the silver filter material and copper filter material are expensive, so the welding cost is relatively high, and the quality of the joint is unstable, making it impractical. Therefore, as shown in Figures 2 and 3, L? In the case of the laser welding method, the copper vibrator is fitted externally to the steel vibrator 5 and the steel vibrator shown in Figure 2. Since the laser pulse 7 penetrates and welds the pipe, the required intervals are cut in the circumferential direction of the pipe, and the laser pulse 7 is located at the positions; It is a shame that there is such a thing as a safety measure.
In addition, in the friction 1F welding method, as shown in Figure 3, the pipe 8
, 8, a button burr 9.9 occurs at the abutting part, and it is especially difficult to remove the burr that appears on the inner surface, and the chuck of the TFT vibrator is only suitable for T-me Dutch fittings where the chuck is an inner cone. OBJECT OF THE INVENTION J The present invention was made in view of the point on the left of I=, n+": L, and it is possible to melt the vibrator itself that is fitted onto the connection ra+.
The purpose of this project is to provide a pipe connection method for refrigeration equipment that makes it possible to weld pipes and connections.
41), 1 [Summary of the Invention] The object of the present invention is to attach a tube made of a material having a low melting point to the connection ff1i of a refrigerator, Cut the outer circumference of the pipe to form a movable electrode and the connecting part, and then use the U pole to melt the material of the vibrator. Welding 1-1, keeping the thickness constant and eliminating leakage defects, is done according to the connection method.

[Example 1 of the Invention A practical example of the present invention will be explained below with reference to Figures IhI and 4. Referring to Figure 4, reference numeral 1 (l It-J, a humbrella-length cooler/ri, this/)]゛Retsusa Cousing 1 (
) The end of the U iron pipe J2 extends from the inside to the connection part 11 of the
, -< External fitting on the eve end A no 1. Insert the pipe 13 1, 1
When the outside Z and the chamber 14 are formed, the pipe J3 has the same diameter as the via 1' in the example shown in Figure 12-4, and the pipe J3 has an enlarged diameter -1, -( , the above-mentioned pipe is adapted to be fitted on the outside of the valve 12, and
Iron pipe 12'', made with low melting point monthly rate, is busy melting Purive J3 F4, pipe 43 and vibe 1
2' (The above pipe 1 is designed to be welded.)
], t, Flare A 1 that is fitted externally to pipe 3
5. This 7-rate 15 has an actuating part 17 that is rotatably supported through a 611 receiver 16, and a motor J8 that rotates the actuating part I7. 1. Then, lower the desired gap to the outer peripheral surface 1 of the tip of the entire tube 13 of the crotch tj fr Tanksden Electric IQ to the operating part 17 so that the desired gap is U(c).

The above 7 sleeping sticks 19 &, j, ) + 11 electric wires are folded and bent, and the cable 21 is connected to the electric wires 11j and whip (' l
Connected to "71"(1'), and pipe "2" is connected to earth by normal means! ],ing. Therefore, the current of the pipe L3 is within the rotating plane of the spool rod 19.

Therefore, to connect the pipe to the casing of the pipe, connect the pipe to the casing of the pipe.
K installed P [Fixed externally to Pue 2, then attached F8 fusion device to pipe 13, Y Bi 4, Ward rod J, 9 is the pipe.''
: Located on the outer surface of the joint of 3.

This state 9J, (decoin, ?l ¥, then 7-ta l
;3 starts up, and Sakuu) part 17 turns! [At the same time as θ1, the paddle rod 11J is generated and comes out from the electrode rod 19゛)'
- When it gets cold, Pa. [Bu J3 will melt. Electrode 4y7 (
Since Jg is fixedly attached to the actuating part 17, it moves together with the actuating part 17 and melts the pipe 13 over the entire circumference of the pipe 13, and by this melting, the vibrator 12 is welded to the pipe.

PR6 and FIG. 7 show other embodiments of the present invention, and the embodiment KIF shown in FIG. Then, a paring part 30 is formed in the connecting part 11 of the case 1(a), and the end part is enlarged in diameter to this barring part 30, and a pipe 31 with a low melting point is fitted on the outside, and the pipe atkffi melting point is fitted. are doing.

See you in the 71st! In addition to the embodiment shown in 21, 1. ψ111 of the oil cooler pipe 32 with a low melting point inserted into the connection part +1 of the cooler 10b! The part is folded back 2 and connected 1) to cover the 18 month evening side, L9, and then this folded part is melted.

[Effects of the Invention-(The above-mentioned Befs are connected according to the present invention in the same way as the two above.
．． Since the vibrator itself melts 4%+i (and then connects the pipe to the refrigeration equipment), the melting of the matrix itself increases and the airtight strength is constant, and there is no occurrence of leakage defects.
However, the number of people who will be interacting with each other is C1n, a member of the staff, and the same person in the evening - T4
．． 75') Does not require materials such as rice cake, and costs less.
Aiming for (flipping effect fJ: dice

[Brief explanation of the drawing]

Figures 1-3 are diagrams showing the conventional vibrator connection method, tn4 Figure 1.1. Fig. 5 is a diagram showing the P/F connection method according to the present invention.
1) and FIG. 7 are diagrams showing other embodiments of the present invention. 1 (Continued, 14
! -・σ-Pipe, 1.1・Vibe Applicant Kiyosumi Omata 1 Figure 2 Figure 3 1:l 8 Figure 4 0 Figure 5 1st

Claims (1)

[Claims] At the connection part of the refrigeration equipment, a pipe made of a material with a lower melting point than the material of this connection part is fitted onto the outside and fixed 17, and placed so that it can be moved by cutting it around the outer circumference of this pipe. The material of the pipe is melted by the electrode formed by #I, and the pipe is welded to the connection part7? : How to connect a vibrator to a refrigeration equipment to prevent hemorrhoids