Helium-filling vacuum leakage detection system for outdoor unit of air conditioner

Abstract

The invention relates to a helium-filling vacuum leakage detection system for an outdoor unit of an air conditioner. The helium-filling vacuum leakage detection system comprises a tooling plate, vacuum boxes, a pre-pumping pump group, a main-pumping pump group, a leakage detection pump group, a leakage detector, helium removing valves, gas discharging valves and leakage detection valves; an input passage consisting of shifters and multi-speed chain conveying belts is arranged at the entrances of the vacuum boxes; an output passage consisting of shifters and multi-speed chain conveying belts is arranged at the exits of the vacuum boxes; the tooling plate is arranged on the input passage and can reach the output passage by passing through the vacuum boxes along the input passage; rolling shafts connected with the input passage are arranged on the bottom faces of the cavity bodies of the vacuum boxes; the cavity bodies of the vacuum boxes are connected with the pre-pumping pump group through pre-pumping valves and are connected with the main-pumping pump group through main-pumping valves; the cavity bodies of the vacuum boxes are further connected with the leakage detector through the leakage detection valves; the cavity bodies of the vacuum boxes are further connected with a gas discharging pipeline, and the gas discharging valves are arranged on the gas discharging pipeline; the cavity bodies of the vacuum boxes are connected with a nitrogen pipeline, and the helium removing valves are arranged on the nitrogen pipeline; and the leakage detector is connected with an alarming device. The helium-filling vacuum leakage detection system for the outdoor unit of the air conditioner has the advantage of ensuring the overall quality of the air conditioner.

Description

technical field [0001] The invention relates to the technical field of helium filling for an outdoor unit of an air conditioner, in particular to a helium-filled vacuum leak detection system for an outdoor unit of an air conditioner. Background technique [0002] The outdoor unit for air conditioner is mainly composed of condenser, compressor, two-way and four-way copper tube parts, electric control, fan, motor and other components. When the condenser, compressor, two-way and four-way copper tube parts are welded into a complete After the circulatory system is installed, it must be tested for leaks to ensure the quality of the air conditioner. At present, in most air conditioner manufacturers, the inspection of the circulation system of the air conditioner is carried out manually, that is, using a helium mass spectrometer leak detector to detect more than a dozen or even hundreds of solder joints one by one. Not only is the production efficiency low, but The missed detectio...

AI Technical Summary

Problems solved by technology

At present, in most air conditioner manufacturers, the inspection of the circulation system of the air conditioner is carried out manually, that is, using a helium mass spectrometer leak detector to detect more than a dozen or even hundreds of solder joints one by one. Not only is the production efficiency low, but High missed detection rate

The helium inspection in a vacuum state is only a single inspection for larger parts such as condensers, which cannot ensure the quality of the whole machine

Therefore there are following problems in the prior art: (1) adopt the technological mode of manual detection, labor intensity is big, and production efficiency is low; 3) Unqualified air conditioners can only be manually distinguished and sorted

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