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Pressure sensor

A pressure sensor and signal sensing technology, which is applied in the direction of measuring fluid pressure, instruments, and measuring fluid pressure through mechanical components, etc., can solve the problems of system control misoperation, unstable product performance, unstable product output, etc., to prevent fracture, The effect of reliable performance and simple structure

Inactive Publication Date: 2013-10-30
ZHEJIANG SANHUA CLIMATE & APPLIANCE CONTROLS GRP CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the pressure sensor structure of the prior art, the signal sensing part 300 seals the chamber 102 through the sealing member 700. During a long-time working process, the microleakage of the sealing member 700 accumulates over time, and a certain high pressure will gradually be formed in the chamber 102. This pressure will act on the pressure sensing part of the very sensitive signal sensing part 300, resulting in deformation of the pressure sensing part and changes in the output of the pressure core, resulting in unstable output of the entire product, resulting in unstable product performance, and in severe cases causing system control. wrong operation

Method used

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Embodiment Construction

[0049] The core of the present invention is to provide a pressure sensor, which is designed to avoid the pressure sensing part from being affected by the high pressure in the inner cavity through structural optimization design.

[0050] The present embodiment will be described in detail below in conjunction with the accompanying drawings.

[0051] figure 2 A schematic diagram of the overall structure of a preferred pressure sensor is given for the present invention.

[0052] like figure 2 shown. The pressure sensor includes a substantially cylindrical lower base 1A made of metal material and an upper base 1B made of plastic material. The lower base 1A and the upper base 1B are relatively fixedly connected to form the body 1 of the pressure sensor and form a chamber 11 . A through hole is provided at its bottom as a medium introduction port 16, and the signal sensing part 3 is fixed on the bottom of the chamber 11 of the lower base 1A, and a seal 7 is arranged between the ...

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Abstract

The invention relates to the refrigeration technical field, and specifically relates to a pressure sensor. The pressure sensor comprises: a body (1) which contains a medium introducing port (16) and an inner cavity (11), a signal induction component (3) which is arranged between the medium introducing port (16) and the inner cavity (11) and seals the inner cavity (11), and a circuit board (2) which is arranged inside the inner cavity (11) and is provided with a leading wire (6). The signal induction component (3) converts medium pressure changes of the medium introducing port (16) into electrical signals and the electrical signals are output through the leading wire (6). The pressure sensor is characterized in that: the body (1) is further provided with a one-way valve mechanism (5) which is capable of releasing pressure inside the inner cavity (11). Through arrangement of the one-way valve mechanism on the body, the pressure sensor can discharge high pressure accumulated in the inner cavity, and meanwhile, external water and gases can be prevented from entering the inner cavity; and the pressure sensor is simple in structure and reliable in performance.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a pressure sensor. Background technique [0002] The pressure sensor is an important component in automatic control. Its function is to convert the pressure signal of the fluid into a specific electrical signal through a certain method. The electrical signal is used as the input signal of automatic control, and finally realizes automatic control under the processing of the control program. [0003] The figure is an anatomical schematic diagram of a pressure sensor in the prior art, please refer to figure 1 , [0004] The pressure sensor includes a substantially cylindrical base 100, a through hole is opened at the bottom of the cylindrical shape as a medium inlet 101, a plastic housing 800 is fixedly connected with the base 100 to form a chamber 102, and a sealing cover 400 is placed in the chamber 102 upper part. The signal sensing component 300 is disposed between the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L7/00
Inventor 不公告发明人
Owner ZHEJIANG SANHUA CLIMATE & APPLIANCE CONTROLS GRP CO LTD
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