CN2526550Y

CN2526550Y - Brushless electronic pump

Info

Publication number: CN2526550Y
Application number: CN 01279644
Authority: CN
Inventors: 王淳
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-29
Filing date: 2001-12-29
Publication date: 2002-12-18
Anticipated expiration: 2011-12-29

Abstract

The utility model relates to a no-brush electronic pump which consists of a pump body and a DC motor, etc. The utility model replaces an existing brush motor by the no-brush DC motor; the motor is controlled by a DC steering control circuit. When the motor is rotated, a central shaft stays keeps still, and a shaft sleeve that is matched with the central shaft in a sliding way drives the pump body to rotate. As no brushes, the spark and fulmination do not occur on any conditions; furthermore, the noise is reduced, and the safety of an oil (or other liquids) pump is largely increased; a rotor in the motor adopts a permanent magnet, which leads the balance to be easy to be adjusted in processing production. The utility model has the advantages of simple structure, small volume, and can be applied to the devices and equipments which has high requirement for the explosive-proof safety.

Description

Brushless type electronics pump

Technical field

The utility model belongs to the liquid pump class.

Background technique

The fuel injection technology is widely used in the motive power machine equipment such as automobile, the oil pump vitals that is absolutely necessary, and it provides fuel under high pressure for motor or other power plant, and this oil pump generally places in the fuel tank and is dipped in oil.This fuel system has many advantages, but exists certain danger, and no oil or oil plant are less in fuel tank, starts oil pump when having sneaked into air again, can produce spark between the brush of direct current generator and the slip ring, and the danger of detonation and burning is so just arranged.And at ordinary times because the oil film between brush and slip ring is heated on surface of contact, a feasible part wherein is by " carbonization ", just so-called oil firing phenomenon.

Summary of the invention

The purpose of this utility model provides a kind of brushless oil immersed type direct current generator, replaces brush motor, forms brushless type electronics pump with oil pump body.

Brushless type electronics pump structure is shown in accompanying drawing 1,2.It is made up of pump body (1), direct current generator (2), peripheral control unit (3) etc.This direct current generator (2) is brushless oil immersed type direct current generator, has replaced the brush motor that in the past used, and this motor (2) is controlled by direct current reversing control circuit (4).Control circuit (4) is a linear current shaping amplifier.The rotor of motor (2) is a permanent magnet rotor.During machine operation, central shaft (5) is static, and the transmission shaft that the axle sleeve (6) that is slidingly matched with central shaft drives pump body (1) rotates.It is the coiling of polytetrafluoroethylene wire rod that the staor winding (7) of motor (2) adopts crust, and seals with polytetrafluoroethylene.Axle sleeve in the rotor (6) uses beryllium bronze alloy material to make with bearing shell.The utility model forms an integral body with the axle sleeve (6) in the motor (2) with all being enclosed in after the transmission shaft of pump body (1) is connected in the cavity.In this cavity, be provided with movable electric contact, also do not have and cause the friction of oil firing to be paid.

Direct current reversing control circuit (4) is in the outside of cavity and fuel tank, and the electromagnetic switch signal is spread out of with lead by electromagnetic switch sensor (8) in the motor.The output line of the polar curve of staor winding and sensor (8) is received outside the cavity in the lump, and threading hole is sealing simultaneously also.The signaling line of electromagnetic switch sensor (8) is connected to the input end of direct current reversing control circuit (4), carries out waveform processing by the current shaping amplifier of this circuit, power amplification, and make and produce alternating magnetic field on the staor winding.Output signal line links to each other with staor winding (7).Can introduce logic control therebetween makes the running of brushless type electronics pump more steadily reliable.The power supply that inputs to control circuit (4) is a direct current, externally directly is connected to the input end of control circuit (4).

Because the utility model has replaced brush motor with brushless electric machine, thus in entire work process, no-spark, no oil firing, and reduced noise.Particularly, make it in processing, to adjust easily its balance because the rotor of brshless DC motor is a permanent magnet.

Description of drawings

Accompanying drawing 1 is the component system figure of brushless type electronics pump.Wherein (1) is oil pump or other liquid pump body; (2) be brushless direct-current oil immersed type motor; (3) be peripheral control unit; (4) be the direct current reversing control circuit.Accompanying drawing 2 is brushless motor structure figure.Wherein (5) are the motor center axle, and (6) are axle sleeve; (7) be staor winding.(8) be the electromagnetic switch sensor.

Embodiment

With pump body (1) with insert in the fuel tank (or other liquid) after brushless oil immersed type direct current generator (2) is connected.Input/output signal between direct current reversing control circuit (4) and motor joins, and the signaling line between direct current reversing control circuit and peripheral control unit (3) also joins simultaneously.When connecting power supply, brushless type electronics pump just can proper functioning, and will export the liquid of peak rate of flow at oil outlet end this moment, and the control and the instruction of pressing peripheral control unit make electronic pump reach the optimum fuel supply status as required.After the electrical power, when permanent magnet rotor is rotated, go up the generation commutation signal at electromagnetic switch sensor (8).This signal process transmission line is input to the input end of direct current reversing control circuit (4), amplifies finally through shaping and exports the alternation direct current signal by current amplifier, and the staor winding (7) of control brshless DC motor carries out the counter-rotating of magnetic pole.Because the continuous change of polarity makes permanent magnet rotor gyrate.The speed of its rotation is subjected to the control of peripheral control unit (3) signal, to realize " circulation " of its operation process, reaches optimum Working.

Brushless type electronics pump is applied in the flammable medium, and guarantees the Security of its operation to can be used for the extraction of automobile, various organic solvent and lightweight oils.

Claims

1, brushless type electronics pump is made up of pump body (1) direct current generator (2) peripheral control unit (3) etc., it is characterized in that described direct current generator (2) is brushless oil immersed type direct current generator, replaced brush motor in the past, motor (2) is controlled by direct current reversing control circuit (4), the rotor of motor (2) is a permanent magnet rotor, during machine operation, central shaft (5) is static, and the transmission shaft that the axle sleeve (6) that is slidingly matched with central shaft drives pump body (1) rotates.

2, according to the described brushless type electronics of claim 1 pump, it is characterized in that the staor winding (7) of described brushless oil immersed type direct current generator (2), adopting crust is the coiling of teflon wire rod, and uses teflon seal.Axle sleeve in the rotor (6) uses beryllium bronze to make with bearing shell.

3,, it is characterized in that described direct current reversing control circuit (4) is the linear current shaping amplifier according to claim 1 or 2 described brushless type electronics pumps.