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Two-way ventilation mask

A mask, one-way exhaust technology, applied in the field of masks, can solve the problems of difficult breathing, large air resistance, increased bacterial and fungal infection, etc., to reduce the risk of virus infection, reduce respiratory resistance, and improve filterability. Effect

Inactive Publication Date: 2020-06-16
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the material of N95 masks has high air resistance and poor air permeability, which leads to difficulty in breathing and unimpeded breathing. Wearing them for a long time will lead to increased facial temperature, increased humidity, and untimely ventilation. Since N95 masks are breathable, in order to ensure maximum air tightness, It needs to provide great tension when worn, which is easy to strangle the skin and increase the infection of bacteria and fungi; in addition, one-time use leads to tight supply and requires garbage disposal, resulting in a large waste of resources
[0004] The existing common masks with fresh air system generally adopt fan ventilation mode, but most of them can only provide air intake or exhaust, and cannot realize the effect of fan two-way ventilation; The influence of airflow or pressure on the inflow and outflow of air during breathing makes the effect of two-way ventilation of the fan poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0040] Such as Figure 2A As shown, the sliding device 23 includes: a screw rod 231 and a slider 232 .

[0041] One end of the screw mandrel 231 is fixedly connected to the drive motor 22, and the drive motor 22 drives the screw mandrel 231 to rotate clockwise or counterclockwise through forward rotation or reverse rotation; further, the drive motor 22 is set There is a switching frequency for adjusting forward rotation and reverse rotation; the switching frequency is similar to the normal human breathing frequency.

[0042] A threaded hole is provided in the middle of the slider 232 for the threaded rod 231 to be screwed through. The ends of the slider 232 (such as the upper top and the lower bottom) are provided with slide grooves, or slide holes, and the corresponding ends of the slider 232 in the housing 21 (such as the top and bottom in the housing 21 Bottom) is protrudingly provided with a sliding column parallel to the screw rod 231 ; wherein, the sliding column is in...

no. 2 example

[0046] Such as Figure 2B As shown, the sliding device 23 can also use a straight bar gear assembly to drive the slider 232 to move back and forth.

[0047] In this embodiment, the straight bar and gear assembly includes a straight rack and a rotating gear. Through the meshing of the straight rack and the teeth of the rotating gear, the rotating gear is driven by the drive motor 22 to rotate clockwise or counterclockwise to drive The spur rack moves to the left or right in the figure. Wherein one end of the spur rack is fixed with the slide block 232, so that the slide block 232 is driven to move to the left or right in the figure when the spur rack moves to the left or right in the figure. In this way, the slider 232 can airtightly isolate the space in the housing 21 into an intake space and an exhaust space, and the slider 232 can change the intake space and exhaust space driven by the drive motor 22. The size, thereby changing the pressure of the intake space and exhaust ...

no. 3 example

[0049] Such as Figure 2C As shown, the slider 232 is driven to and fro by a wheel and a transmission arm assembly.

[0050] In this embodiment, one end of the transmission arm is fixed at a point on the edge of the runner, and the other end of the transmission arm is fixed to the piston. When the runner rotates, one end of the transmission arm also It will make a circular movement accordingly, and the other end of the transmission arm will produce a relative displacement to the left or right, and the other end of the transmission arm is fixed on the piston, therefore, when the runner is on the When driven by the drive motor 22 to rotate, the piston can move to the left or right in the figure. And the motor does not require forward or reverse adjustment.

[0051] In addition, in order to ensure the stability of the piston when it moves to the left or right in the figure, the thickness of the piston can be appropriately increased to enhance the engagement with the inside of t...

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Abstract

The invention provides a two-way ventilation mask. The two-way ventilation mask comprises an airtight mask body and a ventilation electronic pump embedded in the airtight mask body. The ventilation electronic pump includes: a shell; a driving motor, a sliding device and a power supply unit are arranged in the shell; the sliding device separates the space in the shell into an air inlet space and anair outlet space in an airtight manner; the sliding device can reciprocate in the shell under the driving of the driving motor so as to increase / decrease the air inlet space and decrease / increase theair exhaust space at the same time; the air inlet space is provided with an outer side one-way air inlet hole and an inner side one-way exhaust hole; the exhaust space is provided with an outer sideone-way exhaust hole and an inner side one-way air inlet hole; the outer side one-way air inlet hole, the inner side one-way air outlet hole, the outer side one-way air outlet hole and the inner sideone-way air inlet hole are arranged to be one-way air inlet valves respectively and provided with filtering devices respectively. The mask is simple in structure and low in cost, the filterability isimproved, the risk that medical workers are infected with viruses is reduced, meanwhile, respiratory resistance is reduced, and the comfort level is improved.

Description

technical field [0001] The application relates to the technical field of masks, in particular to a two-way ventilation mask. Background technique [0002] In the face of high-intensity infectious viruses, N95 masks still have safety problems. It is necessary to increase the filtration efficiency of medical masks to N100 to 100% protect front-line medical staff. [0003] At present, the material of N95 masks has high air resistance and poor air permeability, which leads to difficulty in breathing and unimpeded breathing. Wearing them for a long time will lead to increased facial temperature, increased humidity, and untimely ventilation. Since N95 masks are breathable, in order to ensure maximum air tightness, It needs to provide great tension when worn, which is easy to strangle the skin and increase the infection of bacteria and fungi; in addition, the one-time use leads to tight supply and requires garbage disposal, resulting in a large waste of resources. [0004] The exi...

Claims

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Application Information

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IPC IPC(8): A41D13/11
CPCA41D13/11
Inventor 谭小军宁德军沈健
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI