A flow rate proportional adjustment device based on amplitude modulation
A technology of proportional adjustment and flow rate, which is applied in the field of microfluidics, can solve the problems such as the inability to adjust the ratio of fluid flow rate, etc., and achieve the effect of convenient control, simple and compact structure, reliable and stable work
Active Publication Date: 2019-07-12
SHENYANG AEROSPACE UNIVERSITY
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Problems solved by technology
In traditional centrifugal microfluidics, since the flow rate is proportional to the pressure difference between the outlet and the inlet, and the pressure difference is proportional to the square of the angular velocity, once the disk is designed, the ratio of the fluid flow rate in the two channels cannot be adjusted.
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[0014] Such as figure 1 As shown, a flow rate proportional adjustment device based on amplitude modulation includes a left reservoir and a right reservoir. There is a left flow channel under the left liquid storage tank, and a right flow channel under the right liquid storage tank; a valve is provided under the left flow channel; the left flow channel and the right flow channel merge into one flow channel at the end far away from the center of the circle , and communicate with the outermost collection pool; the above-mentioned structures are all arranged on a circular disc and rotate around the center of the circle.
[0015] The devices are all arranged on a circular disk.
[0016] The left flow channel and the right flow channel are both straight channels along the radial direction.
[0017] Ventilation holes are provided on the collecting tank, the left liquid storage tank and the right liquid storage tank to ensure the injection and circulation of the liquid 9 .
[0018]...
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The invention provides an amplitude modulation based flow velocity ratio controller which is convenient to control, reliable and stable to work and simple and compact in structure and does not occupy additional space. The technical scheme includes that the amplitude modulation based flow velocity ratio controller comprises a left liquid storage pool and a right liquid storage pool; a left flow pass is arranged below the left liquid storage pool, and a right flow pass is arranged below the right liquid storage pool; a valve is arranged below the left flow pass; the ends, away from the circle center, of the left flow pass and the right flow pass are integrated into a flow pass and are communicated with an outmost collection pool; the structures are arranged on a round disc and rotate around the circle center; the device is arranged on the round disc; the left flow pass and the right flow pass are straight channels along the radius direction; the collection pool, the left liquid storage pool and the right liquid storage pool are provided with through holes.
Description
technical field [0001] The invention belongs to the field of microfluidic technology, and in particular relates to a flow rate proportional adjustment device based on amplitude modulation. Background technique [0002] Liquid ratio adjustment is the most basic requirement for biochemical reactions, especially in applications such as drug screening and ELISA control tests. In traditional centrifugal microfluidics, since the flow rate is proportional to the pressure difference between the outlet and the inlet, and the pressure difference is proportional to the square of the angular velocity, once the disk is designed, it is impossible to adjust the ratio of the fluid flow rate in the two flow channels. The realization of the adjustment of the ratio of the flow velocity in the two flow channels will also facilitate the integration of droplet microfluidics on the centrifugal microfluidics platform. Contents of the invention [0003] In order to overcome the defects of the pri...
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IPC IPC(8): G05D7/06
Inventor 蔡晋王朔李威曹小宝刘辉
Owner SHENYANG AEROSPACE UNIVERSITY