Made in a shell

Abstract

The invention relates to a manufacturing method of a casing, the casing is a liquid accumulator casing for a compressor, a muffler casing for an air conditioner, a gas-liquid separator casing or an oil-gas separator casing for a central air conditioner, the casing is The shell is formed by socket welding of at least two parts, which is characterized in that: the at least two parts are welded by argon arc welding, plasma welding, quasi-ion welding, laser welding or high-frequency welding, and the heat distribution relationship is the sleeve The outer layer of the interface distributes higher heat, and the inner layer of the socket distributes lower heat, so that the outer and inner metals at the socket are welded by self-fluxing. When the invention is welded, the heat of each part is stable and controllable, and both the inner layer and the outer layer can reach the melting temperature, so as to realize good fusion, improve the welding quality, the welding joint is smooth and bright, and the welding strength is high, and the welding seam strength is 10 times higher than that of butt welding times, the production efficiency is high, and it will not cause pinching on the surface of the pipe section, and the equipment cost is only 1 / 3‑1 / 5 of flash welding.

Description

Technical field [0001] The present invention relates to the field of air conditioners and compressors, in particular to the housings of accumulators for compressors, silencers for air conditioners, gas-liquid separators for central air conditioners, or oil-gas separators, and manufacturing methods and applications thereof. Background technique [0002] The compressor accumulator is used to store refrigerant. The main functions of the compressor accumulator include the separation of gas and liquid, the removal of foreign matter, and the control of oil return. The air-conditioning muffler is installed inside the air-conditioner to eliminate various noises such as the flow of refrigerant during the operation of the air-conditioning system, and at the same time play the role of storing part of the refrigerant. The gas-liquid separator for central air-conditioning plays the role of gas-liquid separation in system operation. The oil-gas separator for central air-conditioning plays the...

AI Technical Summary

Problems solved by technology

[0005] However, there are other problems with the above process: flash welding needs to clamp the various parts of the shell to implement the upsetting force and reach a certain upsetting speed, which is easy to cause clamping damage on the surface; if the shell adopts the above-mentioned (2) In the case of this structure, due to the limitation of the flash welding process, the parts will be separated and approached during welding, and the three parts cannot be welded at the same time, and the welding needs to be performed twice; due to the multiple separation, contact, and alignment of each part, the welding Due to the upsetting force, the molten iron at the welding part of each part is extruded to both sides, so that the inner and outer surfaces of the welding part of the shell are formed with raised foreign matter, and due to the structural limitation of the liquid reservoir, the raised foreign matter Foreign matter that is easy to fall off will be sealed in the shell and cannot be eliminated through subsequent processes, and due to the existence of foreign matter, the liquid reservoir will not be used in the compressor; welding power is required, so equipment investment is large; welding strength is difficult Control, for example, when welding, each part is close to separation, the heat is unstable, the welding quality is also unstable, and the thermal stress is large, the impact force is large, it is easy to cause lattice fracture and thermal cracks, and the end of the butt joint is easy to oxidize during the process Inclusion of oxides in the welding place reduces the welding strength

[0006] However, even if the above-mentioned problems are completely improved and a good docking is achieved at the docking place, when installing and using, if image 3 As shown, the shell will be subjected to the vibration force F in the left and right directions, and at this time the weld of the butt joint structure will be subjected to the shear force б in the left and right directions T , and as figure 2 Although the shell shown in the figure is still subject to the vibration force F in the left and right directions, the weld seam of the socket structure is subjected to the tensile force б in the up and down direction, so the butt joint structure is stronger than the socket structure. Weld strength It will still be significantly reduced by more than 90%

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