JPH03249934A - Fluid agitation transportation device - Google Patents

Abstract

PURPOSE:To manufacture the title device free from maintenance and inspection with low cost by forming fluid agitation and transportation grooves in the field magnet of DC brushless motor. CONSTITUTION:The fluid agitation and transportation grooves 22 are formed at the boundary parts of magnet poles of N-pole 13a and S-pole 13b in the field magnets 13 so as to have specified slant to a revolving shaft 10 to transport and agitate fluid, which are integrated with the revolving shaft 10 into a revolving body. A stator armature 16 is provided in the fixed side of a fluid agitation and transportation device main body 1 so as to be confronted with the magnets 13 with a radial clearance between. A fluid influent opening 19 is formed in the main body 1 to introduce fluid into the clearance between the armature 16 and the magnets 18. In order to discharge the fluid transported in the specified direction by the fluid agitation and transportation grooves 22, a fluid outlet 20 is formed in the main body 1, and fluid-proof treatment is applied to the fluid transportation passage in the main body 1. As a result, the title device free from maintenance and inspection is manufactured with low cost.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field of the Invention) The present invention relates to a 'f5 fluid stirring and conveying device that can be applied to many devices such as chemicals, fluxers used in printed circuit boards, and bubble baths.

<Prior Art and its Problems> Generally, in many devices, both industrial and consumer devices, it is necessary to guide a liquid fluid to a predetermined location and stir it at that location to foam it.

However, in the past, most of the devices used to stir and transport liquid fluids are air compressors or liquid fluid stirring and transport devices using AC motors.

However, in the case of liquid fluid stirring and conveying devices that use air compressors or AC motors, although they may be suitable for relatively large devices, highly efficient DC motors are suitable for devices that require downsizing. The one used is suitable.

Second, when a liquid fluid stirring/conveying device is used for bubble baths, such as those used for bathing with red bean paste, if the above-mentioned AC motor is used, the high pressure source is dangerous to the human body. Therefore, a DC motor becomes desirable, but because conventional liquid fluid stirring and conveying equipment uses a contact power supply mechanism using brushes and a commutator, its lifespan is extremely short. , maintenance and inspection were troublesome and inappropriate for home use.

However, at this time, there are only liquid fluid stirring and conveying devices that employ DC motors that use the above-mentioned contact type power supply mechanism.

For this reason, liquid fluid agitation/conveyance devices for bubble baths have a short lifespan and require frequent maintenance and inspection, so there has been a problem that they have not been widely used in general households.

Moreover, the liquid fluid stirring/foaming device using the above-mentioned DC motor has a means for suctioning and introducing the liquid fluid in order to stir the liquid fluid, a means for stirring the liquid fluid, and a mechanism for discharging the stirred liquid fluid to the outside. was required, making it extremely large and expensive.

(Problems to be solved by the present invention) The present invention aims to create a maintenance-free liquid stirring/conveying device that does not require maintenance and inspection, extremely easily and inexpensively, and is also suitable for general household use. Using morphs.

The components of this DC brushless motor themselves have the function of suctioning and introducing liquid fluid, stirring the suctioned and introduced liquid fluid, and further discharging the stirred liquid fluid to the outside.
The object of the present invention is to obtain a liquid fluid stirring/conveying device that is small and inexpensive.

(Means for Achieving the Object of the Invention) The object of the invention is to provide a liquid-fluid agitation system that is formed at a magnetic boundary between the north pole and the south pole with a certain inclination with respect to the rotation axis, and that transports and stirs the liquid fluid in a certain direction. A conveying groove is formed in the field magnet to form a rotating body that rotates integrally with the rotating shaft, and a stator is installed on the fixed side of the liquid fluid stirring/conveying device main body facing the field magnet with a radial gap interposed therebetween. An armature is provided, and a liquid fluid inlet for introducing liquid fluid into the radial gap between the stator armature and the field magnet is formed in the liquid fluid stirring/conveying device main body, A liquid fluid outlet for discharging the liquid fluid transported in a predetermined direction by the transport groove to the outside is formed in the liquid fluid stirring/transporting device main body, and a liquid fluid transporting path in the liquid fluid stirring/transporting device main body is formed. Liquid-fluid stirring/
This can be achieved by providing a transport device.

(Structure of the Invention) FIG. 1 is a longitudinal sectional view showing an example of the liquid fluid stirring/transporting device of the present invention, and FIG. 2 is an exploded perspective view of the main parts of the liquid fluid stirring/transporting device.

Hereinafter, the present invention will be described in detail with reference to FIGS. 1 and 2.

Referring to FIG. 1, a liquid fluid stirring/conveying device 1 showing an embodiment of the present invention has a cylindrical body 2 made of a magnetic material, and its openings at both upper and lower ends are closed with lids 3 and 4, so that a liquid fluid can be stirred and conveyed. It forms a stirring/conveying device main body 5. The inside of the main body 5 is closed with a liquid-proof seal body 6 made of a material with excellent liquid-proof properties, and is divided into a position detection chamber 7 and a rotational torque generation power chamber 8.
A liquid-proofing treatment is applied to prevent the liquid fluid flowing into the position detection chamber 7 from entering the position detection chamber 7. The liquid-proof seal body 6 has an outer peripheral end fixed to an appropriate location on the main body 5 so as not to obstruct a liquid inlet 19 (to be described later), and an inner peripheral end that elastically slides around the outer periphery of the rotating shaft 10. A liquid-proof treatment is applied to prevent liquid from sliding into the position detection chamber 7.

The rotary shaft 10 is rotatably supported by bearings 11 and 12 mounted at the center of the lid 3.4.

As shown in FIG. 2, the portion of the rotating shaft 10 inside the power generation chamber 8 is provided with n (n is an integer of 1 or more) permanent magnets with N poles 13a and S[113b] in an annular shape. The formed field magnet 13 is fixedly installed. Further, in the position detection chamber 7 above the rotating wheel 10, the N pole 13a of the field magnet 13 is located.

A north pole 14a is located at the same angular position as the south pole 13b.

A position detection magnet 14 in which the S poles 14b are alternately magnetized into four poles is fixed and rotated together with the rotating shaft 10. On the inner surface of the cylindrical body 2 facing the field magnet 13 through a radial gap, a cored stator armature 16 having an armature coil 15 arranged in three phases as shown in FIG. 2 is fixed. The magnetic field magnet 13 is rotated relative to the field magnet 13. A position detection element arrangement plate 17 is fixed in the position detection chamber 7, and the position detection magnet 1 is mounted on the position detection element arrangement plate 17.
18 groups of magnetoelectric transducer elements such as Hall elements and Hall ICs used as position detection elements are arranged at positions where the magnetic poles of N pole 14a and S pole 14b of No. 4 can be detected.

A liquid fluid inlet 19 is formed on the upper outer periphery of the cylindrical body 2 of the main body 5 to allow liquid fluid to flow in from the outside, and a liquid fluid inlet 19 is formed in the upper outer periphery of the cylindrical body 2 of the main body 5. A discharge port 20 is formed on the lower outer periphery of the main body 5. Inside the main body 5, a liquid-proof seal 2 is provided to prevent rust from occurring due to the liquid in the liquid passage.
1 is attached by appropriate means. Liquid-proof seal 2
1 is made of heat-shrinkable resin, for example, and includes the inner surfaces of the cylindrical body 20 and the lid body 4 that come into contact with the liquid fluid, the bearing 121, and the rotating shaft 10. The field magnet 13, the iron-core stator armature 16, etc. are protected by the liquid-proof seal 21.

After forcing the liquid fluid into the main body s through the liquid fluid inlet 19, the liquid fluid is stirred, and the stirred liquid fluid is forcibly conveyed from the liquid fluid outlet 20. It is necessary to discharge the liquid to the outside of the main body 5. Therefore, in the liquid fluid agitation/carrier wave fi+ of the present invention, as shown in FIG. A plurality of liquid fluid stirring/conveying grooves 22 are formed in which the liquid fluid between 16 and 16 can be stirred and conveyed in a spiral downward direction in the axial direction. In order to do this, in this embodiment, separate permanent magnets 13N and 13S with N and S poles are used as the field magnet 13, and permanent magnets 13N and 13S with N and S poles are used.
The above-mentioned permanent magnets 13N and 1.33 are formed at a magnetic pole boundary between the permanent magnets 13N and 1.33 so that a two-item stirring/conveying groove 22 is formed at a certain inclination with respect to the rotating shaft 10, and conveys and stirs the liquid fluid in a certain direction. are arranged in an annular shape to form a field magnet 13, thereby forming a rotating body that rotates integrally with the rotating shaft 10.

(Operation of the invention) When 1!1s is closed by a lead wire (not shown), the position detection magnet 14 is detected by the magnetoelectric transducer 18 group.
A drive circuit (not shown) energizes the armature coil 15 with a current in an appropriate direction based on an output signal corresponding to the magnetic pole of the armature coil 15.
Rotational torque in a predetermined direction is obtained, and the field magnet 13 rotates in an appropriate direction. When the field magnet 13 rotates, the liquid fluid stirring/conveying groove 22 formed in the spiral shape is formed in the field magnet 13, so the liquid fluid stirring/conveying groove 22 forms a stirring/conveying device. Therefore, the liquid fluid from the outside is forcibly introduced into the liquid fluid passage of the main body 5 through the liquid fluid inlet 19, and further between the field magnet 13 and the iron-core stator armature 16. into the radial gap. The liquid fluid that flows into the radial gap is stirred and conveyed by the liquid fluid stirring/conveying groove 22, so that the liquid fluid is forcibly discharged to the outside from the liquid fluid discharge port 20.

(Effects of the Invention) As is clear from the above, the present invention provides a DC brushless motor with an extremely simple configuration by only slightly changing some of its components and eliminating the need for a device for stirring and transporting liquid fluid. This brushless liquid fluid agitation/conveying device is expected to be maintenance-free and have a long lifespan, and can be manufactured at a low cost and in a small size, making it a useful device that can be used in many devices such as those for home use.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of a liquid fluid stirring/conveying device showing one embodiment of the present invention, and FIG. 2 is an exploded perspective view of the main parts of the liquid fluid stirring/conveying device. 1... Liquid fluid stirring/conveying device, 2... Cylindrical body, 3.
4... Lid body, 5... Liquid fluid stirring/conveying device main body, 6
...Liquid-proof seal body, 7...Position detection chamber, 8...
Power chamber for generating rotational torque, 9...Liquid fluid inlet, 10
...Rotating shaft, 11.12...Bearing, 13...Field magnet, 13a...N pole, 13b...S pole, 14...Position detection magnet, 14a...N
Pole, 14b... S pole, 15... Armature coil, 1
6... Iron-core stator armature, 17... Position detection element arrangement plate, 18... Magnetoelectric conversion element (position detection element)
, 19...Liquid inlet, 20...Liquid outlet, 21
...Liquid-proof seal, 22...Liquid fluid stirring/conveying groove.

Claims (1)

[Claims] A liquid fluid stirring/conveying groove is formed in the magnetic pole boundary between the north pole and the south pole at a constant inclination with respect to the rotating shaft, and transports and stirs the liquid fluid in a fixed direction, and is formed in the field magnet. A rotating body is formed that rotates as a unit, and a liquid-fluid agitation unit that faces the above-mentioned field magnet through a radial gap.
A stator armature is provided on the fixed side of the conveying device main body, and a liquid fluid inlet for introducing liquid fluid into the radial gap between the stator armature and the field magnet is connected to the liquid fluid stirring/transfer device main body. A liquid fluid outlet for discharging the liquid fluid conveyed in a predetermined direction by the liquid fluid stirring/conveying groove to the outside is formed in the liquid fluid stirring/conveying device main body, A liquid-fluid agitation device characterized by applying liquid-proof treatment to the liquid-fluid transport passage within the device body.
Conveyance device.