JPS621530B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for efficiently flowing liquids with low power consumption.

It is desirable to provide fluidity to the medium to improve the heat exchange efficiency of heat exchangers. However, it is difficult to efficiently generate flow near the heat transfer surface.

Furthermore, in reaction vessels and mixing vessels in chemical machines, stirring blades are used to generate fluidity, but it is also known that it is more desirable for reaction liquids to be caused to flow without using stirring blades.

In addition, in transformers, oil is circulated to cool the electrode plates, etc., but if it were possible to generate oil flow automatically without using a pump, there would be no problems such as pump failure, and reliability would be improved. will be improved.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a method for causing flow by applying an electric force to liquid molecules.

An example of the method of the present invention will be explained below with reference to FIG.

The bottom wall 2 of the Freon R113 liquid tank 1 is, for example, grounded, and a copper ring-shaped high voltage electric wire 3 is installed opposite to the bottom wall 2. A high voltage of 9000V is applied to the electric wire 3, and a gap h of 1 mm is formed between the electric wire 3 and the bottom wall 2. Further, the diameter of the electric wire 3 is 1 mmφ, and the diameter of the ring is 5 mmφ.

In the above embodiment, a rotating jet flow as shown by P in the figure is generated. That is, the liquid on the outside of the ring-shaped electric wire 3 enters into the ring through the gap h, and is blown upward from inside the ring in a direction perpendicular to the bottom wall. In this example, 50cm/
A flow velocity of about sec is generated.

The reason why such an effect occurs can be explained as follows.

The force f acting on the liquid molecules in the electric field is f=ρE+εE·〓E+〓(E ² ·ρ∂ε/∂〓). Here, E: electric field strength, ρ: ion density, ε: dielectric constant, ρ: liquid density In the above equation, ρE is Coulomb force, and since ρ is close to zero, it can be ignored. ,〓
(E ² · ρ∂ε/∂〓) is an electrostrictive force and is a conservative force that does not affect the rotating flow.

As can be seen from FIG. 1, since the electric wire 3 is ring-shaped, the electric field strength differs between the inside and outside of the ring even if they are equidistant from each other. That is, when the potential is indicated by a broken line, the potential at point Q is approximately twice as high as that at point Q', which is equidistant.
Therefore, the electric field strength, which is the gradient, is approximately 2
It's now twice as big.

Now, in the above equation, εE·〓E is a force that acts on the dipole, and is a force that acts from the weaker electric field to the stronger electric field. Therefore, the force directed from the outside toward Q' is greater than the force directed from Q to Q' and the force directed from the outside toward Q, resulting in a flow like P. As described above, since the electric wires 3 of the present invention are placed facing each other, the strength of the electric field is generated around them. Therefore, a flow of liquid occurs from Q' to Q in FIG.

As can be seen from the equation, the larger ε and E are, the more intense the flow becomes.

The electric wire of the present invention is not limited to the above embodiments. As shown in Fig. 2A, the electric wires ₃₁ are arranged in a rectangular shape, as shown in B, _the electric wires ₃₂ are arranged in parallel, and as shown in Fig. These include those that weaken the electric field between the electric wire ₃₃ and the insulating wall 4 and cause the flow _P1 in the figure.

Further, the medium is not limited to Freon R113, but any medium having a large ε may be used. moreover,
The applied voltage, the diameter of the electric wires, the width between the electric wires installed facing each other, the gap between the electric wires and the bottom wall, etc. can be changed as appropriate.

[Brief explanation of the drawing]

FIG. 1 is a diagram for explaining one embodiment of the method of the present invention, A and B in FIG. It is. 2: Bottom wall, 3: Electric wire.

Claims (1)

[Claims] 1. A wall is provided in a liquid, and electric wires to which a high potential difference is applied are placed opposite to the wall, and the electric wires are provided at least facing each other to prevent this mutual interference. Therefore, a region with a strong electric field and a region with a weak electric field are created around the electric wire, and depending on the strength of the electric field, the liquid on the outside of the opposite electric wire passes through the gap between the electric wire and the wall and is transferred to the opposite electric wire. A method for generating liquid flow using a high-voltage electric field, characterized by causing liquid to flow between the walls and flowing in a direction perpendicular to a wall. 2. A wall is provided in the liquid, an electric wire to which a high potential difference is applied is provided between the wall, and an insulating wall is provided near the electric wire to prevent mutual interference between the electric wire, the wall, and the insulating wall. This creates a region with a strong electric field and a region with a weak electric field around the wire, and depending on the strength of the electric field, the liquid outside the space between the wire and the insulating wall passes through the gap between the wire and the wall. A method for generating liquid flow using a high-voltage electric field, characterized by flowing liquid into a space between an electric wire and an insulating wall, and causing the inflowing liquid to flow along the insulating wall.