Wind pressure switch testing device
A technology of air pressure switch and testing equipment, which is applied in the direction of circuit breaker testing, etc., to achieve the effect of reliable life testing
Active Publication Date: 2015-11-25
VAILLANT WUXI HEATING EQUIP
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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
Method used
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Embodiment Construction
[0016] The present invention will be described in detail below in conjunction with various embodiments shown in the drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.
[0017] refer to figure 1 A specific embodiment of the wind pressure switch testing equipment of the present invention is shown. The device 1 includes a casing 10, a fan 20 arranged in the casing 10, an air duct 11 connected between the fan 20 and the wind pressure switch 70 to be measured, an electromagnetic device arranged in the casing and located in the air duct 11 The valve 30 , the controller 40 , and the current module 50 are arranged in the casing 10 .
[0018] The air duct 11 is used to define the passage for the fan 20 to output wind, one end of which is connected to the output port of the fan, and the ot...
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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 No. EP0595210B1, which utilizes the static pressure of gas to push 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 is...
Claims
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IPC IPC(8): G01R31/327
Inventor 许正佳张愈章亮
Owner VAILLANT WUXI HEATING EQUIP