JPS60132081A - Pump appratus equipped with valve - Google Patents

Abstract

PURPOSE:To obtain a pump equipped with a valve which has the superior energy efficiency and durability by operating a soft membrane through the transfer of magnetic fluid. CONSTITUTION:A main chamber 4 is constituted of the first and the second subchambers 20 and 22 by the aid of an outer wall 2 and an intermediate wall 18 each of which has a nearly spherical form, and a suction port 6 is installed onto the first subchamber 20 through a suction valve 12, and a discharge port 8 is formed onto the second subchamber 22, and a discharge valve 16 is installed into a discharge pipe 14, and the both subchambers 20 and 22 are allowed to communicate through an introducing port 26 equipped with an intermediate valve 29 on the intermediate wall 18. In the both subchambers 20 and 22, a soft membrane 33 made of rubber, etc. is formed, and the part between the soft membrane 33 and the outer wall 2 is filled with the magnetic fluid 28 consisting of colloidal solution which is formed by surface-coating the minute powder made of iron oxide, with surfactant and stably dispersing said powder into fluid. Said magnetic fluid 28 is transferred through an introducing port 30 by controlling the magnetic field of an electromagnetic coil 32, and the fluid 24 to be transferred such as blood, etc. is pumped up.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a pump device with a valve using magnetic fluid.

(1) [Overview] A magnetic fluid is a fine powder with a size of about 1/1000th of the diameter of 1O and has strong magnetism, such as fine powder of iron oxide, whose surface is coated with a surfactant, so that it remains stable in a fluid. It is a dispersed colloid solution. This fluid has excellent dispersibility, and even when a magnetic field or centrifugal force is applied, the particles remain uniform within the liquid, and solid-liquid separation such as aggregation or sedimentation does not occur, and the liquid itself is homogeneous and exhibits strong magnetism. It has characteristics.

That is, a magnetic fluid has both fluidity as a liquid and magnetic properties as a magnetic material.

[Prior art]

One of the uses of the valved pump of the present invention is in artificial organ devices. Conventionally, pumps particularly used for artificial livers and the like have moved internal fluid by squeezing a flexible tube with a cam rotated by the drive of a prime mover. That is,
The internal fluid was transported by mechanical energy.

However, in such an artificial organ device, the loss of energy is extremely large, the efficiency is extremely poor at only a few inches, and the durability is not necessarily high. It wasn't enough.

〔the purpose〕

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to realize a valved pump having good energy efficiency and good durability in order to eliminate the above-mentioned drawbacks.

[Explanation of Examples]

FIG. 1 shows a first embodiment of the present invention, in which a main chamber 4 is formed by an outer wall 2 having a substantially spherical shape as shown in the figure.
is provided with an inlet 6 and an outlet 8.

A suction pipe 10 is connected to the suction port 6 . The suction pipe 10 is provided with a suction valve 12 near the suction port 6. A discharge pipe 14 is communicated with the discharge port 8, and a discharge valve 16 is provided in the discharge pipe 14 near the discharge port 8. Main room 4
An intermediate wall 18 is provided to separate the suction port 6 and the discharge port 8 from each other within the main chamber 4, and the main chamber 4 is separated by the intermediate wall 18 into a first sub-chamber 20 and a second sub-chamber 22. Ru. The intermediate wall 18 is provided with a communication port 26 through which the fluid to be transported 24 passes, and a magnetic fluid communication port 30 through which the magnetic fluid 28 passes.The communication port 26 is provided with an intermediate valve 29.

A plurality of electromagnetic coils 32 serving as electromagnetic means are arranged around the outer wall 2 forming the main room 4, and a voltage is applied to some of the electromagnetic coils 32 by a control means (not shown). It is possible to apply A flexible membrane 33 made of rubber or the like is formed in the main chamber 4, and the outer wall 2 and the flexible membrane 3
A magnetic fluid 28 is loaded between the magnetic fluid 28 and the magnetic fluid 28.
can be moved between the first sub-chamber 20 and the second sub-chamber 22 through the entire magnetic fluid communication port 30 by the magnetic field created by the electromagnetic coil 320.

Next, the effect will be explained.

The fluid to be transported 24 such as blood passes through the suction pipe 10 and the suction valve 1
When the intermediate valve 29 is opened, it is sucked into the first subchamber 20, and when the intermediate valve 29 is opened, it moves to the second subchamber 22, and when the discharge valve 16 is opened, it is transported to the outside through the discharge pipe 14. Ru.

Further, the magnetic fluid 2B loaded in the main chamber 4 is connected to the electromagnetic coil 3.
From the first sub-chamber 20 to the second sub-chamber 22 depending on how the magnetic field is applied in step 2.
The second sub-chamber 22 moves to the first sub-chamber 20.

2a to 2d show the movement of the magnetic fluid 28, the opening and closing operations of the valves (intake valve 12, intermediate valve 29, discharge valve 16), and the flow path of the fluid 24 to be transported.

In FIG. 2a, the voltage applied to the electromagnetic coil 32 around the first sub-chamber 20 is locally cut off, etc., so that the magnetic field applied to the first sub-chamber is weakened, and the electromagnetic coil 32 around the second sub-chamber 22 is weakened.
This shows a state in which a strong magnetic field is applied to the second auxiliary chamber 22 by applying a voltage to .

Due to the strong magnetic field applied to the second auxiliary chamber 22, the magnetic fluid 28 moves from the arrow A, that is, the first auxiliary chamber 20, to the second auxiliary chamber 22 through the magnetic fluid communication port 30. As a result, the volume of the transported fluid 240 in the first auxiliary chamber 20 does not increase, but the pressure of the transported fluid 24 in the first auxiliary chamber 20 decreases. Therefore, when the pressure of the fluid to be transported in the first cutting chamber 20 is smaller than the pressure of the fluid to be transported in the suction pipe lo, the suction valve 12 is opened (
5) The fluid to be transported 24 is transported in the direction of arrow A.

Further, in the second sub-chamber 22, the magnetic fluid 2 flows into the second sub-chamber 22.
8, the fluid to be transported 24 is compressed and the pressure increases, which becomes higher than the pressure of the fluid to be transported in the discharge pipe 14, so the discharge valve 16 is opened and the fluid to be transported 24 is transported in the direction of the arrow opening. Ru.

The process shown in Fig. 2b and Fig. 2C is subsequent to Fig. M2a, in which a voltage is applied to the electromagnetic coil 32 around the first subchamber 2O, and a voltage is applied to the electromagnetic coil 32 around the second subchamber 22. This figure shows a state in which a strong magnetic field is generated around the first auxiliary chamber 20 by, for example, cutting the magnetic field locally. As a result,
The magnetic fluid 28 is moved from the arrow B, that is, the second h11 chamber 22, to the first auxiliary chamber 20 through the magnetic fluid communication port 30.

At this time, in the first auxiliary chamber 20, the fluid to be transported 24 is gradually compressed, so the pressure gradually increases, and when the pressure of the fluid to be transported exceeds the pressure of the fluid to be transported in the suction pipe 10, the suction valve 12 is closed. Closed.

In the second auxiliary chamber 22, the fluid to be transported 24 gradually expands (6), so the pressure of the fluid to be transported decreases, and the pressure of the fluid to be transported drops below the pressure of the fluid to be transported in the discharge pipe 14. Then, the exhaust valve 16 is closed.

Furthermore, the pressure of the transported fluid in the first auxiliary chamber 2O is separated and the second
The pressure of the fluid to be transported in the auxiliary chamber 22 decreases, and the first auxiliary chamber 20
When the pressure of the fluid to be transported in the second auxiliary chamber 22 becomes higher than that of the fluid to be transported in the second auxiliary chamber 22, the intermediate valve 29 is opened, and the fluid to be transported 24 is transferred from the first auxiliary chamber 20 to the second auxiliary chamber. Move towards room 22.

The process shown in Fig. 2d is subsequent to the process shown in Fig. 2C, and in Fig. 2'd, the magnetic field around the first subchamber 20 is weakened again, and the magnetic field around the second subchamber 22 is A strong magnetic field is applied. As a result, the magnetic fluid 28 is transferred to the first auxiliary chamber 20
Then move to the second sub-chamber 22 again.

At this time, in the first auxiliary chamber 20, the fluid to be transported 24 gradually expands, so the pressure gradually decreases, and in the second auxiliary chamber 22, the fluid to be transported 24 is gradually compressed, so the pressure gradually increases. Therefore, the pressure of the fluid to be transported in the second auxiliary chamber 22 is lowered to the first auxiliary chamber 20.
If the pressure becomes higher than the pressure of the fluid to be transported within, the intermediate valve 29 is closed. Further, when the pressure in the first auxiliary chamber 20 decreases to below the pressure of the fluid to be transported in the intake pipe 10, the intake valve 12 is opened. When the pressure of the fluid to be transported continues to increase in the second auxiliary chamber 22 and exceeds the pressure of the fluid to be transported in the discharge pipe 14, the discharge valve 16 is opened. Therefore, the transported fluid 24
are conveyed in the directions indicated by 2 and e in the figure.

In this way, FIGS. 2a, 2b, 2c, 2
By cyclically applying the process shown in Figure d, the fluid to be transported can be continuously transported.

In the present invention, the shape of the main chamber 4 is approximately spherical, but it goes without saying that other shapes such as a box shape as shown in FIG. 3 are also possible.

Further, as shown in FIG. 4, a part of the box containing the magnetic fluid 28 may be an open free surface 34, or if this part is constructed as a structure 34 that deforms according to the movement of the magnetic fluid. The number of valves can be two.

〔effect〕

As described above in detail and specifically, the present invention provides the following effects.

(1) Since there is no mechanical drive part peculiar to conventional pumps, and therefore there is almost no mechanical friction part, energy loss such as friction loss can be reduced, and the efficiency of the device can be dramatically improved. .

(2) Durability is improved because there are almost no mechanical friction parts.

(3) Since the configuration is simple, the manufacturing cost of the device can be reduced, and the maintenance and management of the device itself is easy.

(4) Since the pump can be controlled electrically, fine adjustments can be made and the accuracy of flow gate control etc. can be easily improved.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the artificial organ device, and FIGS. 2a to 2d are explanatory diagrams illustrating the operation of the artificial organ device of the present invention. 3 and 4 are cross-sectional views (9) of a modification of the present invention. In the figure, 4... Royal, 6... Inlet, 8... Outlet, 10
... Suction pipe, 12... Suction valve, 14... Discharge pipe,
16... Discharge valve, 18... Intermediate wall, 26... Conduction port, 28... Magnetic fluid, 29... Intermediate valve, 30...
- Magnetic fluid communication port, 32... Electromagnetic means, 33... Flexible membrane, 34... Free surface or a structure that deforms according to the movement of the magnetic fluid 28. (10) Chest 1 Figure 1i Figure 2a Figure 2b Figure 2C Figure 2d

Claims (1)

[Claims] (1) A main chamber is formed by the outer wall, and an inlet and an outlet are provided in the royal chamber; an inlet pipe is communicated with the inlet; an outlet pipe is communicated with the outlet; a suction valve is provided with the inlet pipe; Setting;
a discharge valve is provided in the discharge pipe; an intermediate wall having a communication port and a magnetic fluid communication port is provided in the main chamber between the suction port and the discharge port; an intermediate valve is provided in the communication port; An electromagnetic means is provided around the chamber; a flexible membrane is formed in the main chamber; a magnetic fluid is loaded between the outer wall and the flexible membrane, and the magnetic fluid flows into the main chamber through the magnetic fluid communication port. A pump device with a valve configured to allow movement inside.