JPS5926642A - Fluid flywheel - Google Patents

Abstract

PURPOSE:To increase the flywheel effect of a fluid as the rotational velocity of the fluid increases by a method wherein the fluid having a high specific gravity and sealed into a housing is moved toward the outer periphery of the housing due to a centrifugal force. CONSTITUTION:The bottom surface 3 of the housing 2 makes itself a conical surface expanding upward and a plurality of ribs 4 or grooves are provided radially on the upper part of the bottom surface 3. Further, the high specific gravity fluid 6 such as mercury in a quantity smaller than the capacity of the housing 2 is sealed into the housing. When the housing 2 is rotated, the fluid 6 is given a torque by the ribs 4 or the grooves so that it moves toward the outer periphery of the housing due to a centrifugal force and begins to rotate along the inner wall of the outer periphery of the housing 2. Therefore, it is made possible to vary the flywheel effect of the fluid by changing the number of revolutions of the housing.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flywheel with a vertical spindle system.The conventional flywheel has been designed to improve the flywheel effect by appropriately selecting the shape of the flywheel object, the distribution of mass, the position of the rotation axis, etc. However, the inherent flywheel effect of Izun was constant. In the present invention, the flywheel effect is not constant, but when starting (the flywheel effect is small when stopped, but the rotation is high). Accordingly, the flywheel is intended to provide a flywheel with a greater flywheel effect, and the flywheel is rotatably supported around a predetermined axle and is housed in a sealed housing made of a rigid body with a 2" bottom surface forming a conical surface that expands upward. Encloses a high specific gravity fluid injected in a volume smaller than the internal volume of the housing,
・A fluid in which multiple ribs or grooves in the radial direction are provided on the bottom surface of the housing to give rotation to the high-density fluid, and the centrifugal force forces the high-density fluid to move to the outer periphery inside the housing. Embodiments of the present invention relating to flywheels will be described below with reference to the drawings. In FIG. 1, a rigid housing (2) is fixed to a rotatable axle (1). The bottom surface (3) of the housing (2) has a conical surface that widens upward;
3) A plurality of radial ribs (4) or grooves are provided on the upper surface. The bottom surface may be a spherical surface in addition to a conical shape, and the term "conical surface" includes the case of a spherical surface. This housing (2) is tightly sealed by a lid (5).

t indicates the thickness of the rib.

A high specific gravity fluid (6) in an amount smaller than the internal volume of the housing is injected into the housing (2) and sealed. As the high specific gravity fluid, in addition to liquids such as mercury, powder alloys and other flowable powders and fine particles can be used.

FIG. 2 shows an example of a means for imparting rotational force to the flywheel of the present invention, and although the shaft (1) may be directly connected to a motor or other motor (not shown) and rotated, the rotational force is transmitted to the outer periphery of the housing. As a means (a), use the V bell i/groove (7a), (
B) shows an example in which timing belt teeth or gears (7 included) are installed, and (C) shows an example in which chain teeth (7C) are installed.

Next, to explain the operation of the flywheel of the present invention, as shown in FIG.
The fluid gathers near the central axis (1) along the conical surface of the housing (2), but when the housing (2) is fully rotated, the fluid applies l:9 rotational force to the lip (4) or groove, and the n1 centrifugal force causes J , moves toward the outer periphery, gathers around the outer periphery of the housing (1), and rotates, as shown in FIG.

Figure 5 explains the flywheel effect, where Wi is the gravity of the fluid L・, and γ1 is the center of gravity and central axis of the fluid when it is stopped (
The distance γ11 in 1) indicates the distance between the center of gravity W1 of the fluid and the central axis when the fluid moves toward the outer circumference during rotation.

The flywheel effect (GD2) reduces the moment of inertia,
If the total gravitational acceleration is 2, it is expressed as GD2 = 4fI, and the force is J: When the fluid moves to the outer periphery, the moment of inertia and GD2 increase as shown in the following equation, increasing due to the flywheel effect. do.

■=ΣW1γ12 In other words, as the distance γ1 between the center of gravity W1 of the fluid (6) and the center axis (1) increases, the moment of inertia ■ increases in proportion to the square of γl, so the flywheel 3i1GD2 also increases. When stopping or starting, the fluid is on the bottom (3)
Since it is a conical surface, it is concentrated near the central axis, so γi is small, so GD2 is small, the starting load torque of the drive source is small, and the starting time is shortened. By increasing or decreasing the flywheel effect GD2, the flywheel effect GD2 can be easily changed.
It is very easy to provide a suitable flywheel effect according to the application.

[Brief explanation of drawings]

Fig. 1 is a half longitudinal sectional view of an embodiment of the invention, Fig. 2 is a sectional view showing various types of rotational drive means, Fig. 3 is a sectional view showing the position of the fluid in a stopped state, and Fig. 4 is a sectional view showing the position of the fluid in a stopped state. FIG. 5 is a cross-sectional view showing the position of the fluid in a rotating state. FIG. 5 is a cross-sectional view for explaining changes in the flywheel effect. (1)...Vertical axis (2)...Housing (
3) Bottom surface (4) Rib (6) High density fluid agent Jun Kawachi 2 (a) (b) ()
\) Pattern 2 Figure 3 Figure 4

Claims (1)

[Claims] A seal made of a rigid body with a conical surface whose bottom surface expands upward and is rotatably supported around a predetermined axle. A plurality of radial ribs or grooves are provided on the bottom surface of the housing.
7. A fluid flywheel characterized in that a high specific gravity fluid smaller than the internal volume of the housing is sealed in the housing.