JPH09291881A - Fluid transfer device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate an impact noise at the time of operation, and increase driving force by reciprocating a soft magnetic column by magnetic suction by energization to an exciting coil and the springing force of a spring, and opening/closing a valve by which fluid is exhausted in one direction so as to be transferred. SOLUTION: Outer surfaces of magnetic poles 4b, 4c formed of a annular soft magnetic body are fixed on the inner side surface of the cylindrical outer box 2 of the soft magnetic body. An annularly wound exciting coil 5a is mounted in a recessed part on the inner sides of the magnetic poles 4b, 4c, and the soft magnetic columns 1a, 1b, 1c are coaxially formed. When the exciting coil 5a is energized, the magnetic poles 4b, 4c are moved leftward while attracting the columns 1a, 1b, 1c and stopped after being moved by the width of the magnetic poles. Then, when energization to the exciting coil 5a is stopped, the columns 1a, 1b, 1c are returned rightward by the springing force of a spring 15. Also, devices 6a, 6b, 7a, 7b by which fluid is exhausted in one way are added in vacancies 3c, 3d, 3e, 3f arranged in side plates 3a, 3b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention utilizes a cylindrical linear drive motor drive force and spring repulsion force to utilize the motor body as a fluid transfer means.

[0002]

2. Description of the Related Art In the same purpose, a fluid transfer pump and its drive motor are provided independently, and the pump is driven by the drive motor.

[0003]

The conventional known devices for the same purpose have the following problems to be solved. First Problem Since the drive unit and the pump are separated, there is a problem in that they are large and expensive. There is a problem that an impulsive sound is generated during operation. Second Problem The driving force is the smallest at the beginning of the operation requiring the most output, and becomes the largest at the end of the operation not requiring the output. Third Problem It is expected that the output will be 6 to 10 times as large as the conventional means, but this means is not available.

[0004]

Means for Solving the Problems First Means First and second soft magnetic cylinders that are coaxially fixed and have a predetermined length and are separated by a predetermined axial distance, and a cylindrical soft magnetic body. A cylinder and first and second side plates fitted to both sides thereof, and a soft magnetic body made of an annular soft magnetic body having an outer peripheral surface fixed to the inside of the cylinder and mounted at a predetermined distance. First and second magnetic poles, an annular exciting coil mounted between the first and second magnetic poles, and the outer peripheral surface of the soft magnetic cylinder described above with a slight gap between the first and second magnetic pole surfaces. Are made to face each other, and the soft magnetic material column is repelled in one direction by the spring, stopped and held by the locking member, and the exciting coil is energized, so that the first and second magnetic poles A device that magnetically attracts the soft magnetic cylinder and drives it against the elastic force of the spring.
By the reciprocating motion of the first and second soft magnetic cylinders, the valves for discharging the first, second, third and fourth fluids in one direction provided on the side plates are opened and closed, and the fluids are passed through the conduits. And a device for transferring. Second means First and second coaxially fixed lengths separated by a predetermined axial distance
Of the soft magnetic material cylinder, the cylindrical soft magnetic material cylinder and the first and second side plates fitted to both sides thereof, and the outer peripheral surface being fixed to the inner side of the soft magnetic material cylinder at a predetermined axial distance. First and second magnetic poles made of an attached annular soft magnetic material, and an annular excitation coil attached between the first and second magnetic poles,
The outer peripheral surfaces of the soft magnetic material cylinders are opposed to each other through a slight gap with the first and second magnetic pole surfaces, and the soft magnetic material cylinders are repelled in one direction by a spring and stopped and held by a locking member. By energizing the exciting coil, the first magnetic pole is magnetically attracted by the first magnetic pole, is driven against the elastic force of the spring, and the second magnetic pole and the second soft pole are driven. The magnetic cylinder is held by the device, which is completely opposed to each other at the time of driving, and the reciprocating motion of the first and second soft magnetic cylinders.
It is configured by a device that opens and closes valves for discharging the first, second, third, and fourth fluids provided in the side plates only in one direction to transfer the fluids through the conduits.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described with reference to FIG. Since the same symbols in the drawings are members having the same operation, duplicate description thereof will be omitted. FIG. 1 is a diagram showing the appearance. Members 3a and 3b which also function as side plates are fixed to the left and right of the symbol 2 which is a cylindrical outer casing.
The protruding housings 2a, 2b, 2c, 2d are attached to 3b, and the pipes 10a, 11a for transferring the fluid are connected thereto. The fluid flows in from the arrow B direction and flows out from the arrow A direction.

FIG. 2 is a cross-sectional view of FIG. In FIG. 2, magnetic poles (cores) 4b, 4 made of an annular soft magnetic material (for example, mild steel) are provided on the inner surface of a cylindrical outer casing 2 of soft magnetic material.
The outer peripheral surface of c is fixed. An exciting coil 5a wound in an annular shape is mounted in the recesses inside the magnetic poles 4b and 4c. The soft magnetic cylinders 1a, 1b, 1c are coaxially arranged.
As will be described later, the cylinders 1a, 1b, 1c are magnetic poles 4b, 4c.
When the inner circumference of the magnetic pole surface is slid, the bearing means by the side plates 3a and 3b becomes unnecessary.

The outer circumferences of the cylinders 1a and 1b and the magnetic pole surfaces of the magnetic poles 4b and 4c slide through a slight gap.
As will be described later with reference to FIG. 8, since the magnetic class attractive forces in the radial direction cancel each other out, there is no pressure contact force on the sliding surface, and thus the sliding becomes smooth. By coating a well-known coating agent on the sliding surface, accidents due to oxidation can be prevented. It also has the effect of reducing friction. When the exciting coil 5a is energized, the symbol 4
Cylinders 1a and 1b are attracted by the magnetic poles b and 4c, move to the left, move by the magnetic pole width, and stop. At this time, since there is no mechanical collision unlike the electromagnetic plunger, there is an effect of operating silently. When the energization of the exciting coil 5a is stopped,
The elastic force of the spring 15 causes the columns 1a, 1b, 1c to return to the right, and the restraining member 15a stops the movement. The driving force of the cylinders 1a, 1b, 1c can be controlled by controlling the energizing current of the exciting coil 5a. The control means will be described later.

Circular holes 3c, 3 are formed in the side plates 3a, 3b.
d, 3e, 3f are provided. Each hole has a dotted line 6a, 6
The devices indicated by b, 7a and 7b are added. Since they all have the same construction, a device for a fluid valve indicated by reference numeral 7b in FIG. 4 will be described. In FIG. 4, the opening / closing plate 13 is rotatably supported by a support shaft 13a provided on the temporary side 3b, and is pressed against the circular hole 3f by a spring (not shown). Therefore, when there is a fluid pressure in the direction of arrow 14a, the fluid opens by opening the valve, but when there is fluid pressure in the direction of arrow 14b, the valve is closed and the entry of fluid is blocked. Symbol 6a in FIG.
The devices shown by 6b and 7a are all valves of the same configuration, and are configured to allow the inflow of fluid in the direction indicated by the arrow but block the inflow in the opposite direction.

Dotted lines 10a, 10b, 11a and 11b are pipes having the same symbols in FIG. 1 and are circular holes 3c, 3d and 3 in the arrow direction.
It is a flow tube that allows a fluid to pass through e and 3f. When the cylinders 1a and 1b are reciprocated to the left and right by the above-described means, the fluid flows in the direction of the arrow through each valve, and the fluid in the fluid container 12b flows into the fluid container 12a. Although the known device performs the above-described operation by operating the pump with an electric motor, the means of the present invention is characterized in that the pump and the electric motor are integrated into a single unit, which is compact and inexpensive.

The energizing current value and energizing period of the above-mentioned exciting coil may be manually controlled, but may be automated.
For example, there are the following means. A first electric switch that is closed when the cylinder 1b is pressed against the restraining member 15 is provided. When the electric switch is closed, energization of the exciting coil 5a is started by the power supply, and the cylinders 1a, 1b, 1c are moved to the left. When the cylinder 1a moves by the width of the magnetic pole 4b, the cylinder 1a moves.
The second electric switch, which is pressed against the left end of, is closed. Using a flip-flop circuit, the flip-flop circuit is energized by the ON signal of the first electric switch to energize the exciting coil 5a, and the flip-flop circuit is energized by the ON signal of the second electric switch to excite the exciting coil. 5
The cylinders 1a, 1b, 1c can be reciprocated by stopping the energization of a. Therefore, the fluid can be transferred as described above.

Next, another means will be described with reference to FIG. FIG.
Then, the columns 1a and 1b are attracted to the magnetic poles 4b and 4c to obtain a driving force. In FIG. 3, the column 1b is attracted by the magnetic pole 4c to obtain the driving force, but the column 1a does not generate the driving force. When the column 1a moves to the left, the driving force is not generated because the outer peripheral surface of the column 1a faces the entire width of the magnetic pole 4b. Therefore, only the driving force of the cylinder 1b and the magnetic pole 4c,
This driving force is about ten times that of the embodiment shown in FIG. The reason for this will be described below with reference to FIGS.

In FIG. 6, the magnetic pole 4c and the cylinder 1b are shown in FIG.
The members having the same symbols are shown. When the exciting coil 5a is energized, the magnetic pole 4c is magnetized to the N pole and the cylinder 1b is magnetized to the S pole, so that magnetic fluxes indicated by arrows 9a, 9b and 9c are generated. Since the magnetic flux 9a is perpendicular to the pole face, there is no magnetic attraction force in the direction of arrow C. Due to the leakage magnetic flux indicated by the magnetic fluxes 9c and 9b, an attraction force in the arrow C direction is generated, and the column 1b is driven in the arrow C direction. The above-mentioned circumstances are exactly the same for the magnetic pole 4b and the column 1a in FIG. 2, and a driving force in the direction of arrow C is generated. The characteristics of this driving force will be described with reference to FIG.

FIG. 5 is a graph showing the characteristics of the driving force.
In FIG. 5, the horizontal axis is the movement stroke of the actuator, and the vertical axis is the driving force. In the case of the conventional electromagnetic plunger, the curve 7 is obtained, and in the case of the device of the present invention having the same shape, the curve 7 is obtained. In the device of the present invention, the initial driving force is significantly increased and an effective means can be obtained. Next, another embodiment will be described with reference to the sectional view shown in FIG. 2 that have the same symbols as those in FIG.
The difference is that the width of the cylinder 1a in FIG. 2 is enlarged, and is shown as the cylinder 1a having the same symbol in FIG. Column 1
Since the outer periphery of a completely faces the magnetic pole 4b during operation, there is no driving force in the direction of arrow C, and only the driving force in the direction of arrow C by the magnetic fluxes 9b and 9c by the magnetic pole 4c and the cylinder 1b. At this time, since the facing area between the magnetic pole 4b and the cylinder 1a is large and the magnetic resistance is small, the amount of magnetic flux is large.

The amount of magnetic flux does not decrease and the magnetic pole 4
Leakage magnetic fluxes 9b and 9c between c and the cylinder 1b. Therefore, it is converted into a remarkably large magnetic attraction force between the column 1b and the magnetic pole 4c. The driving force in the direction of arrow C is 10 times or more that in the case of FIG. Therefore, it is possible to obtain an effective means for transferring the fluid. In each of the above-described embodiments, the exciting current and the driving torque are linear when the magnetic flux on the opposing surface of the magnetic pole and the cylinder is vertical. For this purpose, it is necessary to make the magnetic flux on the facing surface perpendicular to the facing surface.

It has been confirmed by actual measurement that the distance between the facing surfaces should be 0.2 mm or less in order to make the magnetic flux of the facing surfaces perpendicular to the facing surface. When the radial force components of the magnetic flux are combined along the entire circumference, the device of the present invention has a circular magnetic body, and is zero. Therefore, the resultant force in the radial direction acting on the cylinders 1a and 1b becomes zero, so that there is an effect that the cylinders 1a and 1b move smoothly in the axial direction. The details are shown in FIG. In FIG. 8, the magnetic flux between the magnetic pole 4c and the mild steel column 1b is indicated by an arrow, and is in the radially outward direction (direction of arrow E), and since it is axially symmetrical, the synthetic magnetic flux disappears. For this, the following conditions are required. First, it is necessary to use mild steel having a high degree of purity and remove the hysteresis of magnetic induction so that the residual magnetic flux becomes zero when the magnetic field becomes zero. Secondly, there is no difference in the radial magnetic flux depending on the direction,
It is necessary that the synthetic magnetic flux be zero. For this reason, it is necessary to anneal after processing to make the magnetic induction constant a constant value.

[0016]

EXAMPLE According to the actual measurement value of a prototype of the actual size shown in FIG. 2, the driving force on the left and right of the actuator 1 can obtain a driving force of 10 kgw.
It is possible to obtain 10 times the driving force. In the case of the embodiment of FIG. 3, the driving force becomes larger than the above-described driving force, and the fluid can be transferred at a correspondingly large fluid pressure.

[0017]

As compared with the conventional means such as the electromagnetic plunger, the initial driving force is about 50 times, and the driving force about 10 times can be obtained thereafter. It is possible to transfer fluid pressure about 10 times that of conventional means. In this case, since the electric motor itself also serves as the transfer pump, the structure is simplified.

[Brief description of drawings]

FIG. 1 is an external view of the apparatus of the present invention.

FIG. 2 is a cross-sectional view of the device of the present invention.

FIG. 3 is a cross-sectional view of another embodiment of the device of the present invention.

FIG. 4 is an explanatory view of a valve that transfers fluid in only one direction.

FIG. 5 is a graph of driving force of the electromagnetic plunger and the device of the present invention.

FIG. 6 is an explanatory diagram of driving force generation of the device of the present invention.

FIG. 7 is an explanatory diagram of driving force generation of another embodiment of the device of the present invention.

FIG. 8 is an explanatory diagram of attraction force due to radial magnetic flux.

[Explanation of symbols]

 1a, 1b, 1c Soft magnetic cylinder 2 Outer housing 2a, 2b, 2c, 2d Housing 3a, 3b Side plate 3c, 3d, 3e, 3f Circular hole 6a, 6b, 6c, 6d Valve 4b, 4c Magnetic pole 5a Exciting coil 10a, 10b, 11a, 11b Conduit 12a, 12b Fluid container 15 Spring 13, 13a Opening valve and its supporting shaft 9a, 9b, ... Arrows showing magnetic poles

Claims (2)

[Claims] 1. A first soft magnetic material cylinder and a second soft magnetic material cylinder, which are coaxially fixed and have a predetermined length and are separated by a predetermined axial distance, and a cylindrical soft magnetic material cylinder and both sides thereof. Was the first
A second side plate, first and second magnetic poles made of an annular soft magnetic material having an outer peripheral surface fixed to the inner side of the soft magnetic material cylinder, and mounted at a predetermined separation distance; A ring-shaped exciting coil mounted between the two magnetic poles and the first and second magnetic pole surfaces are made to face each other with the outer circumferential surface of the soft magnetic material cylinder facing each other, and a soft magnetic material is moved in one direction by a spring. The cylinder is elastically repelled, stopped and held by the locking member, and the exciting coil is energized to magnetically attract the first and second soft magnetic cylinders by the first and second magnetic poles, By the device that drives against the repulsive force of the spring and the reciprocating motion of the first and second soft magnetic cylinders, the first, second, third, and fourth fluids provided on the side plates are moved in one direction. A fluid transfer device comprising: a device for opening and closing a valve for discharging and for transferring a fluid through a conduit. 2. A first soft magnetic cylinder and a second soft magnetic cylinder which are coaxially fixed and have a predetermined length and are separated from each other by a predetermined axial distance. Was the first
A second side plate, first and second magnetic poles made of an annular soft magnetic material having an outer peripheral surface fixed to the inner side of the soft magnetic material cylinder, and mounted at a predetermined axial distance; An annular exciting coil mounted between the second magnetic poles and the outer surfaces of the soft magnetic material cylinders are opposed to each other with a slight gap between the first and second magnetic pole surfaces, and a soft magnetic force is applied in one direction by a spring. The body cylinder is repelled, stopped and held by the locking member, and the exciting coil is energized to magnetically attract the first soft magnetic body cylinder by the first magnetic pole, and the spring repulsion force. And a device in which the second magnetic pole and the second soft magnetic material cylinder are held so as to be completely opposed to each other at the time of driving, and the reciprocating motion of the first and second soft magnetic material cylinders, The valves for discharging the first, second, third, and fourth fluids provided on the side plates in only one direction are opened and closed to allow the fluids to pass through the conduits. Fluid transfer device being characterized in that is constituted by a device for transferring Te.