JPH0326357Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to improving the drainage performance of a mixing device that mixes hot water with water.

(Prior art) The valve seat structure of a conventional mixing device is, for example, a second valve seat structure.
As shown in the figure, it has a structure in which a flat portion C extends outward from the contact portion of the valve body A with the valve seat B.

(Problem to be solved by the invention) However, in the conventional one, since the flat part C is configured to face outward from the contact part of the valve body A with the valve seat B, the lower part of the valve body A If the distance between the valve seat B and the flat part C is small (1 mm to 2 mm),
If the water in the mixing device is gradually drained by the drain operation, the bottom end of valve body A and valve seat B
Due to surface tension, water dripping from valve body A forms a water film and sticks between valve body A and valve seat B. This tension is caused by the fact that the base is flat. Therefore, it is strong and difficult to break, and even if most of the water located higher than the valve body A is drained, only the valve body A will succumb to the surface tension of the water film and water will remain.
There was a problem in that freezing occurred due to cold waves, and water could not be immediately passed when the device was used next time.

(Means for Solving the Problem) In order to solve this problem, the present invention provides an arrangement in which the outer periphery of the valve body is placed at the bottom of the valve seat located at a low position in the main body, with the outer periphery of the valve body at the position where it contacts the valve seat as the top. It is provided with a cut portion that faces downward.

(Function) By providing the cut portion, the lower part of the water film acting between the valve body and the valve seat moves from the top part along the slope due to its own weight, and the surface tension of the water film is broken. The surface tension of water acting between the valve body and valve seat is reduced, improving drainage performance and allowing water to flow immediately even during cold weather.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

Reference numeral 1 denotes a main body of the mixing device, in which a hot water supply port 2 and a water supply port 3 are provided. Further, a mixing section 4 communicating with the hot water inlet 2 and the water inlet 3 is formed approximately in the center of the main body 1, and a branching section 5 is provided downstream of the mixing section 4, and a first outlet 6 and a first outlet 6 are provided. 2
The tap water outlet 7 is communicated with each other. 2a and 3a are valve seats for the hot water supply port 2 provided at the bottom of the main body and the water supply port 3 provided on the side surface of the main body, and 8 is a valve body that moves up and down within the main body 1 in contact with the valve seats 2a and 3a. be.
This valve body 8 opens and closes the valve seat 3a with its side surface, and opens and closes the valve seat 2a with its lower end. The valve seat 2a is the valve seat 3
a, and the lower part of the valve seat 2a is the valve body 8.
A cut portion 9 is provided which extends outward and downward, with the top portion located at the position where the outer circumferential portion of the valve seat 2a contacts the valve seat 2a.

The present invention has such a structure, and a certain ratio of hot water is mixed in the mixing part 4 by the upper and lower parts of the valve body 8, and the hot water at an appropriate temperature is discharged from the first tap 6 and the second tap 7. be. In addition, when draining water, the cut portion 9 is provided so that the valve seat 2a
The water is drained without being affected by the surface tension that was acting between the water and the valve body 8.

(Effects of the invention) As described above, the present invention has a cut part directed outward and downward, with the top at the position where the outer peripheral part of the valve body contacts the valve seat at the lower part of the valve seat located at a low position in the main body. The lower part of the water film that acts between the valve body and the valve seat is
move from the top along the slope due to its own weight,
The surface tension of the water film is broken and the surface tension of the water acting between the valve body and valve seat is reduced, improving drainage performance and allowing water to flow immediately without freezing even when used during cold waves. It is.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a mixing device showing an embodiment of the present invention, and FIG. 2 is a sectional view showing a conventional example. 1...Main body, 2...Hot water inlet, 2a...Valve seat, 3
...Water inlet, 3a...Valve seat, 8...Valve body, 9...
Cut section.

Claims (1)

[Scope of utility model registration request] A mixing part that communicates with the hot water inlet and the water inlet is provided approximately in the center of the mixing device body having the hot water inlet and the water inlet, the valve seat of the water inlet is provided on the side of the main body, and the valve seat of the hot water inlet is provided in the bottom of the main body. The valve seat of the hot water supply inlet is located at a lower position than the valve seat of the water supply inlet. In a device that opens and closes the valve seat of the water supply inlet and opens and closes the valve seat of the hot water supply inlet at its lower end, the position where the outer circumference of the valve body contacts the valve seat is located at the bottom of the lower one of the valve seats at the top. A mixing device characterized by having a cut portion directed outward and downward.