Air pressure switch test equipment

Abstract

The invention provides a wind pressure switch testing device which comprises a housing, a draught fan, a wind channel, a solenoid valve and a current module. The draught fan, the wind channel, the solenoid valve and the current module are all arranged inside the housing. The wind channel defines the way through which the draught fan discharges wind and the wind channel is communicated with a to-be-tested wind pressure switch. The solenoid valve is arranged in the housing and more particularly, in the wind channel to connect or disconnect the wind channel. The current module is arranged in the housing and is electrically connected to the to-be-tested wind pressure switch through a conductive wire. The current module is adopted to monitor the electric signals across the conductive wire. The testing device provided in the invention utilizes a draught fan, a wind channel and a solenoid valve to simulate the acquisition of wind force of a wind pressure switch and further adopts a current module to detect the electric signals caused by the triggering action to the wind pressure switch. The testing device is capable of simulating various practical running states of the wind pressure switch, therefore, so as to conduct reliable tests on the service lifetime of the wind pressure switch.

Description

technical field [0001] The invention relates to a testing device, in particular to a life testing device for a wind pressure switch. Background technique [0002] A typical air pressure switch is shown in European Patent Publication EP 0 595 210 B1, which utilizes the static pressure of gas to drive a micro switch to realize the on-off of current. The air pressure switch has two detection ports, namely positive pressure detection port and negative pressure detection port, and its cavity is thus divided into positive pressure chamber and negative pressure chamber. The two chambers are separated by a film, and when there is a pressure source, the film moves the micro switch to achieve the purpose of on / off. [0003] Usually, the wind pressure switch can be applied to gas water heaters, such as gas water heaters and gas boilers, and its sampling is through the negative pressure detection port, which is connected with the negative pressure area of ​​the fan. After the device i...

AI Technical Summary

Problems solved by technology

[0004] At present, there is no effective test method to simulate the actual operating state of the air pressure switch, so as to conduct a reliable life test on the air pressure switch before leaving the factory

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