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Mask respiratory resistance testing machine

A technology of breathing resistance and testing machine, which is applied in the direction of measuring devices, suspension and porous material analysis, instruments, etc., which can solve the problems of high noise and unstable air flow of the mask breathing resistance testing machine, and achieve low noise and control of air flow stable effect

Pending Publication Date: 2021-01-01
SHENZHEN REFOND EQUIP CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the above problems, the present invention provides a mask breathing resistance testing machine, the main purpose of which is to solve the problems of excessive noise and unstable air flow of the mask breathing resistance testing machine, which is combined with the vacuum generator through the set electric proportional valve , less noise, more stable air flow control

Method used

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  • Mask respiratory resistance testing machine
  • Mask respiratory resistance testing machine
  • Mask respiratory resistance testing machine

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Embodiment Construction

[0023] see Figure 1-2 As shown, it is a mask breathing resistance testing machine realized by the present invention, comprising: a control base 1, which is provided with a control panel and a control system to drive the operation of various mechanical parts; a head mold mounting seat 2, the head The mold mounting base 2 is arranged above the control base 1; the head mold 3, the head mold 3 is arranged on the head mold mounting base 2; the test head 4 is installed on the head mold 3, and the test head A mask is worn at the 4 position; a differential pressure sensor, the differential pressure sensor is provided with the differential pressure sensor at the position 3 of the headform, the differential pressure sensor measures the difference between the pressure in the mask and the atmospheric pressure, and the differential pressure sensor is connected to the differential pressure sensor The control system is electrically connected; the air compressor 5 is arranged outside the con...

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Abstract

The invention relates to the technical field of mask testing equipment, and discloses a mask respiratory resistance testing machine, which comprises a control base, wherein a control panel and a control system are arranged on the control base; a head die mounting base is arranged above the control base; a head mold is arranged on the head mold mounting base; a test head is mounted on the head mold, and a mask is worn at the position of the test head; a differential pressure sensor is arranged at the position of the head mold, and an air compressor is arranged outside the control base; a vacuumgenerator is arranged in the control base and is respectively connected with the air compressor and the test head through pipelines; and an electric proportional valve is arranged between the air compressor and the vacuum generator pipeline. The mask respiratory resistance testing machine provided by the invention is lower in noise and more stable in airflow.

Description

technical field [0001] The invention relates to the technical field of mask testing equipment, in particular to a mask breathing resistance testing machine. Background technique [0002] The mask breathing resistance testing machine is used to test the ventilation resistance of the mask under specified conditions, mainly through the pressure difference between the inside of the mask and the atmosphere. The existing mask breathing resistance testing machines on the market mainly simulate the breathing process of the human body through the combination of a vacuum pump or an air pump and a solenoid valve. There are defects such as excessive noise and unstable air flow. The testing personnel even need to wear earplugs during the testing process. cover, which is not conducive to wide application. Contents of the invention [0003] In order to solve the above problems, the present invention provides a mask breathing resistance testing machine, the main purpose of which is to so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N7/10G01N15/08
CPCG01N7/10G01N15/0806G01N15/0826
Inventor 巫日涵巫班金张志荣黄晓玲宋蓉蓉
Owner SHENZHEN REFOND EQUIP CO LTD
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