JP2629221B2 - Water metering device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixed-quantity water supply device used in a washing machine or the like.

2. Description of the Related Art As this type of fixed-quantity water supply device, a device having a configuration as shown in FIG. 3 is known. In the drawing, reference numeral 1 denotes a housing having one end connected to a valve connected to a water tap and the other end connected to a water suction port of the washing machine, which forms a flow path from the water tap to the water suction port. Inside the housing 1, a swirling means 2 composed of a plurality of blades for axially swirling the water flowing through the flow path, and a sphere orbiting in the swirling flow generated thereby and orbiting in a direction orthogonal to the flow direction 3 and a flow sensor mechanism 5 having outflow prevention means 4 for keeping the sphere 3 within the range of the swirling flow. Reference numeral 6 denotes a cap for fixing the arrangement position of the flow sensor mechanism 5. On the surface of the housing 1 facing the flow sensor mechanism, a flow sensor detector 7 for detecting the number of revolutions of the sphere 3 is attached. The portion of the housing 1 connected to the flow rate sensor mechanism 5 is a flow path 8 formed by a mortar-shaped wall.
The center axis of the flow path 8 and the flow path formed on the valve side coincide with each other.

With the above configuration, this device has the following operation. When water is supplied from a faucet, the water flows through the flow path via a valve, and a swirling flow is formed by the swirling means 2. The swirling flow causes the sphere 2 to make a revolving motion of revolving in a direction orthogonal to the swirling flow. The number of revolutions of the sphere 3 is
It has a certain relationship corresponding to the amount of water flowing through the flow path, and the amount of water supplied from the faucet can be detected by measuring the number of revolutions. The number of revolutions of the sphere 3 is detected by the flow rate sensor detector 7, and the valve is operated by this signal to stop the supply of water when the amount of supplied water reaches a certain value.

Problems to be Solved by the Invention However, the above configuration has the following problems.

This water metering device is in a substantially horizontal state as shown in FIG. 2 when actually used. Therefore, for example, when the hose connected to the tap is disconnected at the end of the previous use and water is supplied again by connecting the hose to the tap, water and air are mixed and flow through the flow path. In this case, if the supply amount of water is small, the air accumulates in the upper part of the flow rate sensor mechanism 5 and does not easily flow out to the flow path 8. In the state where the intake air is accumulated in the upper part of the flow sensor mechanism 5, the orbital movement of the sphere 2 is disturbed, and sometimes it is not performed at all. That is, in the configuration described in the conventional example, there is a problem that accurate flow detection cannot be performed when air accumulates in the flow sensor mechanism 5.

The present invention is to solve such a problem, and provides a constant-volume water supply device that can quickly discharge air even when air accumulates in a flow sensor mechanism, and can perform accurate flow detection. It is intended to be.

Means for Solving the Problems In order to achieve the above object, a housing having a water supply valve at one end and a flow path connected to a water suction port of a washing machine or the like at the other end is provided. A partition member provided so as to form the upper flow path and the lower flow path integrally or separately, and having an inclined portion that covers substantially the entirety of the lower flow path and has an inclination angle with respect to the traveling direction of the fluid. An upper flow path formed by the partition member, and a swirling means for swirling the fluid, which is disposed on the upstream side of the partition member, and is positioned in a swirling flow by the swirling means in a direction orthogonal to the flow in the flow path. A flow sensor mechanism section comprising a circulating sphere and an outflow preventing means for keeping the sphere within the range of the swirling flow, and a flow sensor detecting section for detecting the number of rounds of the sphere disposed outside the housing, The inner diameter of the upper flow path is smaller than the inner diameter of the flow sensor mechanism, and the inner diameter of the entire downstream flow path connected to the flow sensor mechanism is larger than the inner diameter of the flow sensor mechanism.

Operation With this configuration, the air accumulated in the upper part of the flow sensor mechanism is easily discharged to the downstream of the flow sensor mechanism due to the diameter of the flow path, and the water supplied to the valve-side flow path is reduced by the flow sensor. When flowing from the mechanism section to the upper flow path, the partition member having the inclined portion gives the momentum, so that the water flow is surely discharged to the upper flow path.

Embodiment An embodiment of the quantitative water supply apparatus of the present invention will be described with reference to FIGS. The members 2 to 7 are the same as the members described in the conventional example, and the description is omitted. 13 is a valve from faucet 14
A housing that forms a flow path to a water inlet 16 of a washing machine or the like through the housing 15 and has a rib 9 for positioning the flow rate sensor mechanism 5. Also, the inner diameter W ₂ downstream from the rib 9
And the inner diameter W ₁ of the flow sensor mechanism 5, the flow sensor mechanism 5
It is larger than the inner diameter W ₃ of the upstream side leading to. Further, inside the housing 13, a partition member 10 integrated with or separate from the housing 13 is provided, and a flow path on the downstream side of the flow rate sensor mechanism 5 is branched into an upper flow path 11 and a lower flow path 12. Have been. The inner diameter W of the upper channel _{11. 4,} in this embodiment also smaller than the inner diameter W ₂ of the downstream side is equal to or less than the inner diameter W ₃ on the upstream side. The central axis of the upper flow path 11 is located above the central axis of the flow rate sensor mechanism 5. The partition member 10 has an inclined portion 10a for guiding water flowing out of the flow sensor mechanism 5 to the upper flow path 11, and a lower flow for remaining water remaining on the flow sensor mechanism 5 and the upstream side after using a washing machine or the like. Small holes 10 for flowing down the road
has b.

 The operation of the present embodiment with the above configuration will be described.

The water supplied from the faucet 14 via the valve 15 flows out of the flow rate sensor mechanism 5 to a water inlet 16 of a washing machine or the like from a downstream flow path subsequent thereto. In this case, even when the amount of water supplied from the faucet 14 is small, since the inner diameter W ₄ of the upper passage 11 is less than or equal to the inside diameter W ₃ of the upstream side, the flow rate sensor mechanism section 5 water Will be filled with. Further, the water discharged from the flow rate sensor mechanism 5 is guided to the upper flow path 11 vigorously by the inclined portion 10a of the partition member 10. The air remaining in the flow sensor mechanism 5 and the air remaining on the upstream side are:
The water flows out to the upper flow path 11 with this water. At this time, in the present embodiment, the relationship W ₂ > W ₁ is satisfied, and since the central axis of the upper flow path 11 is located above the central axis of the flow rate sensor mechanism 5, the air is more easily moved. Things. Although the housing 13 has an example in which the outer diameter is different, it is obvious that the outer diameter may be the same and only the inner diameter may be set in the above-described relationship.

In this embodiment, the partition member 10 has a small diameter 10 for residual water treatment.
Since b is provided, the residual water remaining in the flow path after the use of the washing machine is discharged through the lower flow path 12 through the small hole 10b. Therefore, even in a cold region, there is no possibility that the water remaining in the flow path freezes and cannot be absorbed by the washing machine.

Effects of the Invention As described above, the present invention provides a practical fixed-quantity water supply device that can easily discharge air flowing into a flow sensor mechanism with a simple configuration and can perform accurate flow detection. Is what you can do.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view for explaining one embodiment of a fixed quantity water supply apparatus of the present invention, FIG. 2 is an enlarged sectional view of a portion A in FIG. 1, and FIG. 3 is a longitudinal sectional view showing a conventional fixed quantity water supply apparatus. It is. 1 ... housing, 2 ... turning means, 3 ... sphere, 4 ...
... flow-out prevention means, 5 ... flow rate sensor mechanism, 7 ... flow rate sensor detector, 10 ... partition member, 10a ... inclined section, 11 ...
… Upper channel, 13… housing, 14… water, 15 ……
Valve, 16 ... Water inlet of washing machine, etc.

Claims (1)

(57) [Claims] 1. A housing having a flow passage connected at one end to a water supply valve and the other end to a water intake port of a washing machine or the like, and an upper flow passage and a lower flow passage formed integrally with or separately from the housing inside the housing. And a partition member that is provided so as to form a path and covers a substantially entirety of the lower flow path and has an inclined portion having an inclination angle with respect to the direction in which the fluid travels, and an upper flow path formed by the partition member. A sphere disposed in the swirling flow by the swirling means and the swirling means, which is arranged on the upstream side of the partition member, and circulates in a direction orthogonal to the flow in the flow path; A flow sensor mechanism comprising an outflow preventing means to be kept in the housing, and a flow sensor detector for detecting the number of times the orbit of the sphere disposed outside the housing is provided, and an inner diameter of the upper flow path is an inner diameter of the flow sensor mechanism. Ri small and flow path across the inner diameter of the downstream articulating the flow sensor mechanism includes quantitative water supply apparatus is made larger than the inner diameter of the flow sensor mechanism.