JPS5884275A - Electromagnetic feed valve - Google Patents

Abstract

PURPOSE:To reduce the variation of the amount of supplied water against the pressure of the supplied water in an electromagnetic feed valve by providing a flow-regulator valve made of rubber at the entrance of the water supply in a valve main body. CONSTITUTION:In a feed valve mechanism 6, when current is given to a solenoid 16 to attract a plunger 13, a pressure-escape hole 11 is opened, and a diaphragm 9 is separated from a valve seat 8 to open a feed water passage 7. In this construction, water is supplied via the feed water passage 7. Here, a rubber-made flow-regulator valve 3 tapered 3'' toward a center hold 3' to make a coneshape is furnished to be detachable at the innermost of a filler 2. This flow-regulator valve 3 is weak in rigidity, and the center hole 3' is reduced in its diameter under a high water pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electromagnetic water supply valve that is equipped with a flow rate adjustment valve at the water supply inlet of the valve body, and in particular, the water supply amount changes from low to high, from high to low, and from low to low as the water supply pressure increases. The purpose of this is to create two peaks, one high and one low, and to reduce the overall fluctuation of water supply amount with respect to water supply pressure.

Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings. In the figure, 1 is the valve body of the electromagnetic water supply valve, and the water supply population is 1.
In a, a filter 2 is removably installed, and behind it is a rubber flow regulating valve 3 shaped like a donut and shaped like a mortar from the front and back toward the central hole 3#, and the regulating valve 3. Three fixed pipes 4 are detachably provided.

6 is a vertical lip provided integrally with the main body 1 within the water supply population 1a. Reference numeral 6 denotes a water supply valve mechanism provided for opening and closing the water supply path 7 located between the water supply population 1a and the water supply outlet 1b. A plan that includes a holding plate 1o that holds the center of the diaphragm 9, a pressure relief hole 11 provided in the holding plate 1o that holds the center of the diaphragm 9, and a backing 12 that opens and closes this pressure relief hole 11 at the tip. A guide member 14 that guides the sliding movement of the plunger 13 and the plunger 1
3 and a spring 16 that biases the plunger 13 so that the backing 12 always closes the pressure relief hole 11, and a solenoid 16 that operates the plunger 13. Then, the water supply valve mechanism 6 energizes the solenoid 16 to move the plunger 13 to the spring 1.
No. 6 (by suctioning against pressure)
1 is opened, the diaphragm 9 separates from the valve seat 8 and the water supply path 7 is opened. As a result, water from the tap is supplied to devices such as a dishwasher and an automatic washing machine through the water supply path 7.

Here, the flow rate regulating valve 3 in the conventional electromagnetic water supply valve has a plate thickness T2 as shown in FIG. 3, and does not deform as shown in FIG. 3A at low water pressure, and the diameter of the center hole becomes d. When the water pressure is high, the flow rate regulating valve 3 is deformed by the water pressure like the same port, and the diameter of the center hole is reduced to dl, thereby adjusting the flow rate. Also, the change in water supply amount due to the change in water supply pressure at that time is
As shown in Figure 4, the maximum flow rate is 12.6β/min at a water pressure of approximately s Kg/crll. Therefore, it is considered that the deformation effect of the flow rate regulating valve appears starting from the water pressure of s Kg/d. However, in the 72 curve, the minimum and maximum difference in flow rate is 61! , 7 minutes is unfavorable.

However, in the embodiment of the present invention, as shown in FIG.
, 7 to 0.8).

As a result, the rigidity of the flow rate regulating valve 3 is weak, and at low water pressure it begins to deform as shown in Figure 2, and at high water pressure it becomes deformed to the maximum as shown in Figure 2, and the diameter of the center hole is also d2. Tonashi d,
It gets smaller. This deformation state is similar to the -T4 curve in Figure 4, where a peak with a large flow rate is formed in the first stage at a water pressure of 3 Kg/ad, a trough with a small flow rate at 5 cm/cd, and a trough with a small flow rate of 10 Kf/cd.
At /cd, the flow becomes a large mountain again. Also, the maximum difference in flow rate at that time was 4p and 7min, and there was very little fluctuation, so the performance of the water supply valve was stable.

As described above, the present invention focuses on the rigidity of the flow rate regulating valve, and by configuring the water supply pressure-water supply amount relationship curve to have two high and low peaks, stable performance as described above can be obtained. The effect is extremely large.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an electromagnetic water supply valve showing an embodiment of the present invention;
Figure 2 A9 and C are cross-sectional views showing the operating state of the flow rate regulating valve, Figure 3 A9 and C are cross-sectional views of conventional valves that correspond to Figure 2, and Figure 4 is a cross-sectional view of the conventional valve. It is a water supply pressure-water supply amount relationship curve diagram of an invention and a conventional example. 1a...Water supply inlet, 1b...Passway, 2.
... Filter, 3 ... Flow rate adjustment valve, 6 ...
...Water valve mechanism. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 [A] (υ)
0s Figure 3

Claims (1)

[Claims] The water supply inlet of the valve body is equipped with a rubber flow rate adjustment valve that is donut-shaped and tapers into a mortar shape from the front and back toward the center hole. An electromagnetic water supply valve configured to have two peaks, one high and one low.