Unlock instant, AI-driven research and patent intelligence for your innovation.

Diaphragm structure and low-noise air leakage valve

A technology of diaphragm structure and leak valve, applied in vascular assessment, cardiac catheterization, etc., can solve problems such as voice recognition failure, loud noise, and affecting product experience, and achieve elimination of self-excited resonance, no audible noise, and simple structure Effect

Pending Publication Date: 2019-05-31
常州威图流体科技有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the air leakage valve in the prior art produces large noise due to self-excited resonance, which causes voice recognition failure and affects product experience, the present invention proposes a diaphragm structure and a low-noise air leakage valve, which solves the above technical problems

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Diaphragm structure and low-noise air leakage valve
  • Diaphragm structure and low-noise air leakage valve
  • Diaphragm structure and low-noise air leakage valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as Figure 1-10 As shown, this embodiment provides a diaphragm structure. The diaphragm structure 1 includes a diaphragm body 11 on which a mass block 12 is arranged. Specifically, the mass block 12 is columnar, and its cross-section can be circular, polygonal, or other closed areas, etc., and the end face of the mass block 12 away from the diaphragm body 11 is a plane.

[0050] Preferably, the diaphragm body 11 can produce certain elastic deformation; the material of the diaphragm body 11 can be selected but not limited to TPU, silicone rubber, stainless steel. Preferably, the mass block 12 and the diaphragm body 11 can be integrated or fixedly connected. The mass block 12 can be elastic or non-elastic. The material of the mass block 12 is optional but not limited to rubber, stainless steel, lead, ceramics; preferably, the mass block 12 is made of TPU.

[0051] Further, a sealing gasket may also be provided on the end surface of the mass block 12 away from the ...

Embodiment 2

[0063] Such as Figure 11-12 As shown, the structure of the diaphragm and the leakage valve of this embodiment are basically the same as that of the first embodiment, the only difference is that the one-way cut-off structure is the fish mouth valve 14, the fish mouth valve 14 is located in the air outlet cavity 3, and the fish mouth valve 14 The end with a larger opening is fixedly connected to the diaphragm body 11 , and the fish mouth valve 14 communicates with the first air hole 111 . There may be one or more first air holes 111 , and the one or more first air holes 111 are all within the coverage of the fish mouth valve 14 .

[0064] Similar to Embodiment 1, preferably, the diaphragm body 11 can be configured as a split body. The diaphragm body 11 includes a first diaphragm and a second diaphragm. The first diaphragm is provided with a first air hole 111. The fish mouth valve 14 is installed on the first diaphragm. A quality block 12 is arranged on the second diaphragm, a...

Embodiment 3

[0070] Such as Figure 13-14As shown, the diaphragm structure and air leakage valve of this embodiment are basically the same as those of Embodiment 1, the only difference is that the one-way cut-off structure includes a cylindrical valve body 15 installed on the diaphragm body 11, and the diaphragm body 11 has a mounting hole 112. The cylindrical valve body 15 has a cylindrical structure with one end open, and the closed end of the cylindrical valve body 15 is provided with a closed limit structure, and the outer diameter of the closed limit structure is larger than the outer diameter of the cylindrical portion of the cylindrical valve body 15 A second air hole 151 is opened on the side wall of the cylindrical portion of the cylindrical valve body 15, and the second air hole 151 is an air flow channel. During installation, the cylindrical portion of the cylindrical valve body 15 is located in the installation hole 112 , and the closing and limiting structure is located in the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of fluid control, particularly relatesto a diaphragm structure and a low-noise air leakage valve. The diaphragm structure comprises a diaphragm body, wherein a mass block is arranged on the diaphragm body.The low-noise air leakage valve comprises a valve shell, wherein the diaphragm structure is arranged in the valve shell; the diaphragm structure divides an inner cavity of the valve shell into an air inlet side and an air outlet side; an air flow channel is arranged on the diaphragm body; and the low-noise air leakage valve also comprises a one-waycut-off structure for controlling the air flow cut-off of the air flow channel; the one-way cut-off structure controls the air flow of the air inlet side to flow to the air outlet side through the air flow channelwhen the air pressure of the air inlet side is greater than that of the air outlet side.By arranging the mass block on the diaphragm body, the natural frequency of the diaphragm structure is reduced, the higher frequency self-excited resonance is eliminated, and the effect of not generating sharp howling is achieved; the lower frequency self-excited resonance is changed into the self-excited resonance with a frequency lower than 20Hz, and the effect of not generating audible noise is achieved.

Description

technical field [0001] The invention relates to the field of fluid control, in particular to a diaphragm structure and a low-noise air leakage valve. Background technique [0002] With the advent of wrist sphygmomanometers, a new type of sphygmomanometer (watch sphygmomanometer) that is different from wrist sphygmomanometers has become a new development direction. The watch body is located on the back of the hand and is compatible with electronic voice. Therefore, higher requirements are put forward for core components such as air pumps and leak valves, such as miniaturization and low noise. [0003] Gas flows through the leakage valve cavity to generate self-excited vibration. When the self-excited vibration frequency is the same as the natural frequency of the sub-component of the cavity, the sub-component will generate self-excited resonance, and then the amplitude will increase sharply. If the vibration frequency is within the audible Within the range (the frequency of ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/021
Inventor 吴垠周京京钟德坤张磊舒培
Owner 常州威图流体科技有限公司