SU941697A1 - Vibropump - Google Patents

Description

(54) VIBRONASOS

one

The invention relates to pump engineering, in particular, to the design of a vibration pump, and can be used in experimental techniques, instrument engineering and other fields.

A vibration pump is known that contains active elements associated with the vibration drive and forming vibration chambers 1.

A disadvantage of the known pump is low efficiency.

Closest to the invention is a vibration pump, comprising a housing with nozzles for supplying and discharging a fluid and piezoelectric exciters located in it, connected via a controller to a high-frequency oscillator and interacting with operating elements 2.

The disadvantage of this vibration pump is its low efficiency.

The purpose of the invention is to increase efficiency.

The goal is achieved by the fact that piezoelectric exciters are made in the form of coaxially arranged rotating cylinders with axial polarization, the working elements in the form of hubs covering the cylinders and curved blades fixed on them, and the controller in the form of synchronized modulation blocks.

FIG. 1 shows a vibration pump, a cross section; in fig. 2 shows section A-A in FIG. one.

The vibration pump includes a housing 1 with nozzles 2-5 for supplying and discharging a liquid and piezoelectric elements located in it

10 oscillation pathogens connected through the controller to the generator 6 of high-frequency oscillations and interacting with the working elements. Piezoelectric exciters are made in the form of coaxially located, cznny rotating cylinders 7 and 8

15 with axial polarization, working elements in the form of hubs 9 and 10 that surround cylinders and curvilinear blades fixed on them 11--14, and the regulator in the form of synchronized blocks 15 and 16 of module 20

.

The vibration pump works as follows.

Claims (2)

When connecting the generator 6 high-frequency oscillations to the piezoelectric rotating cylinders 7 and 8, elastic oscillatory systems: cylinder 7 - hub 10 - blades 13 and 14 and cylinder 8 - hub 9 - blades 11 and 12 begin to oscillate at the frequency of resonant radial oscillations, as the generator 6 is tuned to the fundamental frequency of the radial oscillations of these systems. Due to the asymmetry of the blades 13, 14 and I, 12 in the radial direction, each blade makes associated normal and tangential oscillations with respect to the zone of contact with the housing 1, i.e. in the contact zone, the points located on the outer radial surface of the blades 13, 14 and 11,12 move along ellipsoidal trajectories m. This causes oblique collisions in the contact zone whose frequency is equal to the excitation frequency, i.e. generator frequency 6. The tangential components of oblique collisions create a torque that drives the hubs 9 and 10 into rotation. The voltage from the generator 6 of high-frequency electrical oscillations enters the modulation units 15 and 16. The incoming voltage is modulated in amplitude, and the magnitude of the voltage amplitude provides the average angular velocity of rotation of the hubs 9 and 10 (and the blades of 13.14 and 11, 12), and the variable amplitude (modulation is made according to the harmonic law) causes a variable component of the angular velocity of rotation of the hubs 9 and 10 (blades 13, 14 and 11, 12), while the phases of the variable component of the angular velocity of the hubs 9 and 10 differ by half a circle. Under the influence of the variable component of the angular velocity of rotation, the blades 14–12 and 11–13 approach one another — the volume of the cavities between them decreases. if the injection process takes place, at the same time, when the blades 14-11 and 12-13 are separated from each other - the volume of the cavities between them increases - the absorption takes place. Thus, the hubs 9 and 10 (the blades 13, 14 and 11, 12) perform not only rotational motion with an average angular velocity, but also oscillate, then suction, then inject fluid. The proposed improvements, while significantly simplifying the design (there is no need for a permanent magnetic field stator, springs), increase the efficiency and reliability of the vibration pump. Vibration pump comprising a housing with fluid inlet and outlet nozzles and located in it piezoelectric oscillation pathogens connected via a controller to a high-frequency oscillator and interacting with operating elements, characterized in that coaxially arranged rotating cylinders with axial polarization, working elements in the form of hubs covering cylinders and curved blades attached to them th, and controller - modulation in the form of sync blocks. Sources of information taken into account during the examination 1. USSR author's certificate No. 699234, cl. F 04 F 7/00, 1977. 2. USSR author's certificate for application number 2959618 / 25-06, cl. F 04 F 7/00, 1980. BUT- /( Фа2.2