Indicator of vacuum dust remover

Abstract

The invention provides an indicator of a vacuum dust remover, which comprises an indicator case, an air inlet passage, a case cover, an air inlet, an air outlet, an observing window and a valve-shaped indicating body structure, wherein the air inlet passage is circulated by the indicator case, the case cover is arranged on one side of the indicator case communicated with a dust collecting chamber, the air inlet is formed on the middle part of the case cover, the air outlet is formed on the side opposite to the air inlet, the observing window is arranged at the upper part of the indicator case, and the valve-shaped indicating body structure is arranged in the indicator case and is used for indicating the air pressure in the dust collecting chamber. The indicator of the invention can realize the safe position return of an indicating body after the action through a small magnetic body and a small armature iron. In addition, because the invention omits a valve arranged outside the body of the indicating body, the integral structure of the indicator is compact, the cost is low, and the installation is convenient.

Description

technical field [0001] The present invention relates to vacuum cleaners, and more particularly to indicators for vacuum cleaners showing the state of air flow inside the vacuum cleaner. Background technique [0002] like figure 1 As shown, the existing vacuum cleaner 10 includes a motor-driven chamber 4 and a dust collection chamber 2 . In the motor driving chamber 4, a motor casing H is provided, and a fan (not shown) and a motor (not shown) that generate suction are arranged in the motor casing H. An exhaust component 9 is arranged behind the motor housing H, and the exhaust component 9 is used to discharge the air separated from the foreign matter to the outside of the vacuum cleaner 10 body. [0003] A suction inlet 1 is formed on the front side of the dust collection chamber 2 located in front of the motor drive chamber 4. The external air containing foreign matter sucked through the suction hose is sucked into the vacuum cleaner through the suction inlet 1. The insid...

AI Technical Summary

Problems solved by technology

[0007] 1. The existing indicator valve uses the principle of leverage to reduce the magnetic force required to control the indicator to open, but due to size constraints, the valve cannot be designed too long, so a magnetic body with a large magnetic force is still required, and further cut costs;

[0008] 2. Since the magnetic force decreases sharply with the increase of the distance, after the indicator moves, the magnetic force between the magnetic body and the armature is very small, and when the indicator moves and the vacuum degree drops to the position where the indicator needs to be returned, the gas flows The pressure acting on the valve is only reduced by about 50%, so the valve cannot be returned;

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