JPH029122Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a reservoir tank with a filter.

In general, a reservoir tank 1 with a filter for power steering uses a filter 4 to absorb oil from an inlet 2a, as shown in FIGS. 1 and 2.
It is designed so that it can be filtered through and discharged from the discharge port 2b.

By the way, reservoir tank 1 with such a structure
The oil sucked in from the suction port 2a swirls inside the casing 2 as shown in Figure 1, so the oil level is low at the center and high at the outer periphery as shown in Figure 2. Put it away. For this reason, there is a possibility that air will be drawn in at the center where the oil level is low, and if the oil containing this air is supplied to the pump of the power steering device, there is a problem of surging occurring in the power steering device. Ta.

In view of the above, an object of the present invention is to provide a reservoir tank with a filter that can prevent air from being drawn into the reservoir tank.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

First, let me explain about reservoir tank 1.
As shown in Fig. 3, this main body consists of a cylindrical casing 2, a cap 3 attached to the top of the casing 2, a filter 4, and an oil inlet 2a and an oil outlet 2b. has been done. The oil outlet 2b is provided at the bottom of the casing 2, and the inlet 2a is provided above the outlet 2b. And this intake port 2
A filter 4 is provided between a and the discharge port 2b. Note that, as shown in FIG. 5, the suction port 2a is provided near the outer periphery of the casing 2, and the discharge port 2b is provided near the center of the casing 2. Also, the diameter of the outlet 2b is the same as that of the inlet 2a.
is set larger than the diameter of the

There is a suction port 2a near the opening (outlet) 2c of the suction port 2a that opens on the inner peripheral wall surface of the casing 2.
A guide member 5 is provided which has a deflection chamber 6 for changing the flow direction of oil flowing in from the guide member 5 .

One side (inlet) of the deflection chamber 6 of the guide member 5 opens to the suction port 2a, and the other side (outlet) of the deflection chamber 6 opens into the casing 2. Further, the deflection chamber 6 has guide walls 7 and 8 forming both side walls of the deflection chamber 6 having a flat cross section and a substantially inverted C shape so that the opening on one side is wide and the opening on the other side is narrow. An extension line L passing through the center of the diversion chamber 6 from one side opening to the other side opening passes approximately through the center of the casing 2 and is directed toward the inner wall surface on the opposite side of the suction port 2a. ing. Furthermore, a deflection piece 9 is formed on the guide wall 7 of the deflection chamber 6 on the side facing the opening 2c of the suction port 2a so as to narrow the opening on the other side of the deflection chamber 6. The oil flowing into the redirection chamber 6 from the suction port 2a is guided along the extension line L by the redirection piece 9.

This embodiment is constructed as described above. Therefore, as shown in FIGS. 4 and 5, the inlet 2
The oil flowing into the direction change chamber 6 of the guide member 5 from the direction a is guided by both guide walls 7 and 8 of the direction change chamber 6, and its flow direction is changed by the direction change piece 9. The oil flowing out from the opening on the other side of the diversion chamber 6 is guided along the extension line L passing through approximately the center of the casing 2, and after hitting the inner peripheral surface on the opposite side of the casing 2, the oil flows in the forward direction S. It is divided into reflux G and reflux G. In the reservoir tank 1, a vortex S2 due to the normal flow S is generated.
A vortex G2 is generated due to the backflow G, and as a result, the oil level T in the reservoir tank 1 is maintained at a substantially uniform height as shown in FIG. Therefore, unlike conventional methods, it is possible to prevent large eddy currents from occurring within the reservoir tank 1.
The occurrence of surging due to air entrainment can be reduced.

As described above, in a reservoir tank having a filter for filtering fluid, the flow of fluid flowing from the opening of the inlet opening on the inner circumferential wall of the reservoir tank A guide member having a redirection chamber for changing a direction is provided, the redirection chamber of the guide member is open on one side to the suction port, and the other side of the redirection chamber is opened into the reservoir tank, and further, An extension line L passing through the center from one side opening to the other side opening of the deflection chamber
is a reservoir tank with a filter that is directed toward the inner circumferential wall surface of the tank through substantially the center of the reservoir tank.

Therefore, according to this invention, the flow direction of the fluid flowing from the suction port into the deflection chamber of the guide member is changed in the deflection chamber, and flows through the center of the reservoir tank to the inner circumferential wall surface on the opposite side. After hitting the water, there are two branched flows with opposite flow directions, so two vortices with opposite flow directions can be generated in the reservoir tank. As a result, the level of the fluid in the reservoir tank can be kept substantially uniform, and air can be prevented from being drawn into the reservoir tank. For example, when adopted in a power steering device, surging due to air entrainment can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a plan sectional view showing the conventional one, Fig. 2 is a side sectional view, Figs. 3 to 5 show an embodiment of this invention, and Fig. 3 is a side view showing the reservoir tank. 4 is a plan sectional view of the reservoir tank, and FIG. 5 is an enlarged plan sectional view showing the main parts. DESCRIPTION OF SYMBOLS 1... Reservoir tank, 2a... Suction port, 4... Filter, 5... Guide member, 6... Direction change chamber.

Claims (1)

[Claims for Utility Model Registration] In a reservoir tank having a filter for filtering fluid, the flow direction of the fluid flowing in from the opening of the inlet opening on the inner circumferential wall of the reservoir tank is determined. A guide member having a changing direction chamber is provided, and one side of the changing chamber of the guide member opens to the suction port, and the other side of the changing chamber opens into the reservoir tank, A reservoir with a filter, characterized in that an extension line L passing through the center from an opening on one side to an opening on the other side of the opposite chamber passes through approximately the center of the reservoir tank and is directed toward an inner circumferential wall surface of the tank. tank.