JPS60236689A - Water feeder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a water supply device for equipment that is directly connected to a water supply facility such as a water supply facility and supplies water.

Conventional configuration and its problems As 4a heat for water supply, electricity law l? Explain 121N fluently. Conventionally, a centrifugal dehydrating washing machine has a structure as shown in FIG. In the figure, 1 is the housing, 2
3 is an outer tank for receiving washing water, and 3 is a washing/dehydration tank installed inside the outer tank 2, with an agitation 114 in the center and a large number of small holes 5 in the side wall for draining water. There is. The mechanical case 6 has a mechanism that transmits the driving force of a motor 7 so as to rotate only the stirring lX14 during washing and to rotate the washing and dehydrating tank 3 during dehydration.The motor 7 is driven to the mechanical case 6 by a belt 8 and a pulley 9. It transmits power. 10 is a support plate;
An outer tank 2, a mechanical case 6, a motor '7, etc. are provided. Further, these are suspended from the housing 1 by rods 11.

12 is a drainage pump, and 13 is a drainage hose, through which washing water and the like are drained. 14 is a solenoid valve, which is directly connected to a water supply or a water boiler via a hose or the like. Then, the valve is opened and closed by the controller [1-1], and water can be supplied when necessary. 15 is a water supply port; 16 is a water supply hose for connecting the solenoid valve 14 and the water supply port 15;
From 5 onwards, water is supplied to the inside of the Wll and ice water 3.

Here, when directly connected to the water supply equipment, if a detergent with high foaming properties is used and a lot of foam is generated and reaches the vicinity of the water supply port 15 and the water supply equipment becomes negative pressure, the foam will become stronger. They often invade inside water supply equipment. In order to prevent the intrusion of bubbles, a check valve having a spherical ball 17 with a check valve inside as shown in FIG. 2 is used. In this check valve, the portion 16 that holds the ball 17
A has a rib 15a for regulating the movement of the ball 17.

However, when the outlet shape of the water supply port 15 is made complicated for the purpose of reducing water scattering, etc., hollow molding is often used, but it is difficult to provide the ribs 15a.

Furthermore, since water flows from the outer periphery of the ball 17 during water supply, the holding portion of the ball 17 must have a large diameter.

However, the distance between the water supply port 15 and the outer tank 2 in the vertical direction is small, and the outer tank 2 moves in the event of vibrations such as dehydration. small items are required.

OBJECTS OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art.(b) Therefore, it is an object of the present invention to save space and to enable manufacturing by blow molding.

Structure of the Invention In order to achieve the above object, the water supply device of the present invention is a water supply device that is directly connected to a water supply facility, and includes a backflow prevention ball in the connection between the water supply port and the water supply hose connected to the water supply port. The water supply hose has a substantially conical shape on the water supply port side, and has a substantially elliptical cross-sectional portion having a longer diameter larger than the ball diameter and a shorter diameter smaller than the ball diameter on the water supply side from the ball arrangement position of the water supply port. be.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 3 to 5, 18 is a water supply port which is the key point of the present invention. The water supply hose 19 is made of a material with sealing properties, and is provided with a portion 19a having a substantially conical shape and holding the ball 20 on the side connected to the water supply port 18. The water supply port 18 is a portion 19 that holds the ball 20
It has a substantially elliptical cross-sectional portion 18b for regulating the ball 20 on the water supply side 18a rather than a. The major axis of this approximately ellipse is larger than the diameter of the ball 20, and the minor axis is smaller than the diameter of the ball 20.

To explain the operation in the above configuration, when the water supply equipment becomes negative pressure, the solenoid valve side of the water supply hose 19 becomes negative pressure, air or water flows from the water supply port 18 side to the solenoid valve side, and the ball 2o moves toward the water supply hose '19 as shown by the two-dot chain line in FIGS. 4 and 5, and is pressed against the substantially conical holding portion 19a of the water supply hose 19 due to the negative pressure. Therefore, a seal is formed in this part, and backflow of water etc. is prevented.

Next, in the case of water supply, the ball 20 moves toward the water supply port 18 as shown by the solid line in FIGS. Since it is smaller than the diameter of , it cannot move any further and stops here. Also, if you look at the movement of water, the fourth
As shown by the arrow in the figure, the water flows in the direction of the longer axis of the ellipse, and is supplied from the water supply side 18a to the washing and dewatering tank. Here, the water supply capacity can be determined by the size of the major axis. Furthermore, by orienting the short axis direction of the substantially ellipse in the downward direction, the space in this short axis direction portion becomes smaller.

Effects of the Invention As described above, according to the present invention, since the water supply 1 has a substantially circular cross section for regulating the ball for preventing backflow, space is saved in the direction of the short axis of the substantially ellipse. It becomes small and flat. Therefore, it is easy to use, for example, in objects that do not take up much space in the upper direction. Moreover, since it can be manufactured based on the external shape rather than adding ribs as in the conventional method, it can also be manufactured by blow molding.

[Brief Description of the Drawings] Fig. 1 is a vertical sectional view of a conventional centrifugal dewatering washing machine, Fig. 2 is a sectional perspective view of a conventional water supply device, and Figs. 3 to 5 show an embodiment of the present invention. 3 is a perspective view of the water supply device on the 1gi plane,
FIG. 4 is a cross-sectional view of the same, and FIG. 5 is a longitudinal cross-sectional view of the same. 18... Water supply port, 18a... Water supply side, 18b...
Substantially elliptical cross-sectional portion, 19... water supply hose, 19a.
...Holding part, 20...Ball agent Hiroshi Morimoto Ward 1, Figure 2, Figure 3

Claims (1)

[Claims] 1. A water supply device that is directly connected to water supply equipment, and is equipped with a ball for preventing backflow in the connection part between the water supply port and the water supply hose connected to it, and the shape of the water supply port side of the water supply hose is adjusted to fit inside the road or into a cone. The water supply is formed into a shape and has a substantially elliptical surface portion having a longer diameter larger than the ball diameter and a shorter diameter smaller than the ball diameter on the water supply side from the ball arrangement position of the water supply port.