RU2612671C1 - Piezoelectric supercharger of fluid media - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: supercharger consists of the housing, inside which the multilayer piezoceramic elements are installed, made in the form of cylinders protected by flexible wear-resistant shells. The electrodes are connected to the control units for the excitation of oscillations. Lids with pipelines attached thereto with intake and exhaust valves are arranged at the butts of the shells. The piezoceramic elements are in the form of a cylinder placed inside the intermediate tube with double walls, the space between the walls thereof is filled with flexible hygroscopic material. Between the housing and the intermediate tube, the tubular housing with double walls is installed, the space between the walls thereof is filled with air.

EFFECT: increased pump head and efficiency.

3 cl, 7 dwg

Description

The invention relates to a device for pumping fluids and can be used in industry, transport and at home when pumping liquids, as well as other incompressible and compressible fluids.

Known piezoelectric fluid blower described in patent RU 2452872 C1, 10.06.2012.

The piezoelectric fluid blower consists of piezoelectric elements located in the housing and connected in series, the electrodes are connected to the control units to excite vibrations, and the injection of fluid occurs by changing their length.

A disadvantage of the known technical solution is the low efficiency of the supercharger.

The closest analogue of the claimed technical solution is the device for pumping fluids described in the patent (RU 2295802 C2, 02.03.2007).

The known supercharger consists of a housing, inside of which multilayer piezoceramic cylinders are installed, protected by flexible wear-resistant shells, electrodes connected to control units for exciting vibrations, covers located on the ends of the shells with pipelines with inlet and outlet valves connected to them, gaskets and a blower drive.

The advantage of the known device is high, according to the authors, performance, reliability and versatility.

A disadvantage of the known supercharger is the design complexity and relatively high overall dimensions.

The problem to which this technical solution is directed is to create a simple, small-sized, efficient and reliable supercharger capable of pushing a fluid through the internal channel of the cylinders.

The technical result achieved by the implementation of the invention is to increase the pressure of the pump, as well as to increase its efficiency.

To solve the problem with achieving a technical result in the well-known piezoelectric fluid blower, consisting of a housing, inside of which multilayer piezoceramic elements are installed made in the form of cylinders protected by flexible wear-resistant shells, electrodes connected to control units for exciting vibrations, covers located on the ends of the shells, with pipelines attached to them with inlet and outlet valves, gaskets and actuators, according to the invention, piezoelectric of sul elements are in the form of a single cylinder, placed inside the intermediate tube with double walls, the space between the walls is filled flexible hygroscopic material, and between the shell and the intermediate tube is mounted a tubular housing with double walls, the space between the walls is filled with air.

Flexible hygroscopic material can be made in the form of foam rubber.

The elastic hygroscopic material can be made in the form of a corrugated tube with an obtuse angle of the ribs, while the ribs are provided with openings allowing the fluid to pass freely through the openings.

The implementation of piezoceramic elements in the form of a single cylinder placed inside an intermediate tube with double walls, the interstitial space of which is filled with flexible hygroscopic material, and a tubular body with double walls, the interstitial space of which is filled with air, is installed between the body and the intermediate tube, simplifies the manufacture of the supercharger and increases its efficiency and overall dimensions.

The implementation of the flexible hygroscopic material in the form of foam rubber also contributes to the simplification of technological processes for the manufacture of a supercharger.

The implementation of the flexible hygroscopic material in the form of a corrugated tube with an obtuse angle of the ribs, provided with openings that allow free passage of fluid through them, gives a great opportunity for technologists to form the design of the supercharger.

FIG. 1 - power block supercharger made of piezoelectric elements in the form of washers.

FIG. 2 - power block of the supercharger assembly (wires not shown).

FIG. 3 - an intermediate tube filled with foam rubber.

FIG. 4 is a general view of a supercharger with an intermediate foam rubber tube.

FIG. 5 - power supply unit of a piezoelectric supercharger.

FIG. 6 - intermediate corrugated tube.

FIG. 7 is a general view of a corrugated tube supercharger.

The piezoelectric supercharger 1 (Fig. 1) contains a block of washers 2 made of piezoelectric elements tightly adjacent to each other and arranged in the form of a column with an internal cavity 3.

The surface of each washer is equipped with electrodes (not shown in FIG. 1), powered by an alternating current circuit through a transformer. The inner and outer surfaces of the column of washers are filled with an outer layer of heat-resistant rubber (not shown).

An outer washer 4 is located on one side of the washer block (Fig. 2) with an opening in the middle with an outlet fitting 5. On the other hand, there is the same washer 6 with an opening in the middle and a fitting 7. The washer 4 and washer 6 are filled with an external piezoelectric block a layer of thermal rubber. A block of washers is placed inside the intermediate tube 8 (Fig. 3) with double walls. The interwall space of the intermediate tube 8 is filled with foam rubber. The tube 8, made of dense rubber or flexible plastic, is installed inside the tubular body 9 (Fig. 4) with double walls. The interwall space of the tubular body 9 is filled with air. The whole structure together with the tubular body 9 is placed in the inner channel, made in the form of a common body 10, having the form of a pipe made of rigid material, such as metal or plastic. To prevent the displacement of the tubular casing 9, it is fixed on two sides inside the common casing 10 using fixed plugs 11 and 12. The tubular casing 9 is equipped with outlet hoses 13 and 14. The hose 14 contains a check valve 15. A similar check valve is installed in the hose 13. valves provide fluid movement in only one direction. In turn, the fitting 5 of the washer block is equipped with a hose 16, and the fitting 7 is connected to the hose 17. In the hose 16 there is a non-return valve 18. A similar non-return valve is also installed in the hose 17. The non-return valves allow the fluid to move in one direction only.

The power circuit of the piezoelectric block contains a step-down transformer 19 (Fig. 5), in which there is a high voltage winding with wires 20 and 21 and a set of low voltage windings with wires, 22, 23 supplying power to the first piezoelectric washer, wires 24, 25 for power supply of the second piezoelectric washer, wires 26 27 for powering the third piezoelectric washer, etc. The power frequency of the transformer determines the performance of the supercharger.

In an embodiment, the flexible hygroscopic material is made in the form of a corrugated tube 28 (Fig. 6) with an obtuse angle of the ribs, while the ribs are provided with openings (not shown) that allow free passage of fluid through them.

A general view of the corrugated tube blower 28 is shown in FIG. 7.

A piezoelectric fluid blower operates as follows. When applying power to the wires 22-27, etc. (Fig. 5) on the washers 2 of the piezoelectric elements (Fig. 1, 2, 4, 7), the latter will begin to change their overall dimensions. With a certain polarity of the signal, the internal and external sizes of the piezoelectric elements increase; with the opposite polarity, these sizes decrease. In the process of increasing the internal size, the fluid will tend to fill the resulting vacuum, and when compressed, the fluid will be pushed into the outer space. In this case, the check valves (Fig. 4, 7) ensure that the fluid flows only in one direction from the hose 17 to the hose 18.

If there is an intermediate tube 8 (Fig. 3, 4) during the expansion of module 1, its external walls will act on the tube 8, compressing its walls. The fluid in the tube will be forced out through the hose 13. The non-return valves in the hoses 13 and 14 will allow the fluid to move only one way from the hose 13 to the hose 14. Compression of the module 1 will result in foam rubber being in the inter-space of the intermediate tube 8 restore its volume by drawing fluid into voids. The process is then repeated.

A similar process described above will occur in the presence of corrugated tube 28 (Fig. 6, 7).

Thus, in this proposal, the entire volume of the piezoelectric elements is used to pump the fluid. This circumstance contributes to an increase in the efficiency and productivity of this supercharger and a decrease in its overall dimensions.

A piezoelectric fluid blower can be used in transport, and in industry, and in agriculture, and in everyday life when pumping liquids with a high pressure and a relatively small flow rate, where it is difficult to use other types of pumps in terms of weight and size and efficiency.

Claims (3)

1. A piezoelectric fluid blower containing a housing, inside of which are installed multilayer piezoceramic elements made in the form of cylinders protected by flexible wear-resistant shells, electrodes connected to control units for exciting vibrations, covers located on the ends of the shells, with pipelines connected to them intake and exhaust valves, gaskets and actuators, characterized in that the piezoceramic elements are made in the form of a single cylinder placed inside the intermediate cutting the double-walled, the space between the walls is filled flexible hygroscopic material, and between the shell and the intermediate tube is mounted a tubular housing with double walls, the space between the walls is filled with air. 2. A supercharger according to claim 1, characterized in that the elastic hygroscopic material is made in the form of foam rubber. 3. The supercharger according to claim 1, characterized in that the elastic hygroscopic material is made in the form of a corrugated tube with an obtuse angle of the ribs, while the ribs are provided with openings that allow fluid to pass freely through them.

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