JP2604065Y2 - Water governor - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water governor used for a water heater or the like, and more particularly, to a technology for improving drainage in a drainage passage of the water governor to prevent freezing.

[0002]

2. Description of the Related Art A conventional water governor comprises, for example, a substantially cylindrical valve seat body 2 and a substantially cylindrical valve 31 completely inserted therein as shown in FIG. The flow rate of water supplied in the direction of arrow D is adjusted. FIG. 4 is a view as viewed from the direction indicated by the arrow D in FIG. The valve seat body 2 is composed of a substantially cylindrical inlet-side room E and an outlet-side room K with a seat surface 7 provided substantially over the entire inner periphery at the center. The valve 31 is provided with a seat surface 9 corresponding to the seat surface 7 over the entire outer periphery. Valve 31
Inside, a first cylindrical chamber J on the upstream side and a second cylindrical chamber H on the downstream side are formed, and both are communicated with each other through a water hole R. The seat surface 9 of the valve 31 is located at a substantially central outer periphery of the second chamber H. The second chamber H constitutes a room in which a plurality of lateral holes 8 are formed on the outer periphery of the cylindrical wall on the upstream side, and the spring 3 is inserted on the downstream side. In the outlet side room K of the valve seat body 2, a plurality of lateral holes 6 are formed in the cylindrical side wall. The top of the outlet-side room K has a shape that is closed by a spring seat portion that receives the spring 3.

[0003] With the second chamber H at the head, the valve 31 is completely inserted from the inlet side room E of the valve seat body 2 to a position where the seat surface 9 contacts the seat surface 7.
The spring 3 inserted into the second chamber H of the valve 31 is received by the spring seat portion of the outlet side room K of the valve seat body 31. On the inner wall surface of the inlet side room E of the valve seat body 2,
The ring-shaped stopper 4 prevents the valve 31 from being pushed out by the returning force of the spring 3 so that the valve 31 is not pushed out.
Is mounted so as to receive the entire outer peripheral end of the first chamber J. Since the valve 31 slides through the O-ring 5 and is sealed between the inner wall surface of the inlet-side room E of the valve seat body 2 and the outer periphery of the first chamber J of the valve 31, the valve 31 No water flow is generated between the first chamber J and the second chamber H except for the water holes R. When the valve 31 advances, the seat surface 9 of the valve seat body 2
Hits and retreats, the outer end of the first chamber J
And slides between them to operate. The valve 31 has a larger diameter in the first chamber J than in the second chamber H. When the valve 31 is incorporated in the valve seat body 2, the inner wall surface of the inlet side room E of the valve seat body 31 and the valve are closed. A gap is formed between the outer periphery of the second chamber H of the valve 31 and the water passage from the lateral hole 8 of the valve 31 to the seat surface 9.

As shown by an arrow D in FIG. 3, the flow of water during the operation of the water governor is as follows.
Then, the first chamber J of the valve 31 is entered. As soon as it enters the second chamber H through the water hole R, the valve 3
1, passes between the seat surfaces 7 and 9, and goes to the outside of the water governor through a lateral hole 6 formed in the outlet side room K of the valve seat body 2. When a water flow passes from the first chamber J to the second chamber H, the valve 31 has a pressure difference caused by a passage resistance of a water passage hole R provided in a central portion thereof and a surface pressure of water applied to the first chamber J. Move forward and backward accordingly. Therefore, the size of the water passage hole R is narrowed down to a size that generates a differential pressure and operates the valve 31. Further, the water flow other than the water holes R is sealed by the O-ring 5 as described above. According to the above-described principle, when the water pressure is applied from the water governor inlet and the above-described water flow is generated, the valve 31 advances and retreats according to the water pressure, and changes the opening degree between the seat surfaces 7 and 9. Adjust the amount of water passing through. That is, even if the water pressure fluctuates, the flow rate is always kept constant.

[0005]

When a water removal operation is performed with a water heater in which such a water governor is installed with its second chamber H facing upward, for example, as shown by an arrow F in FIG. The wastewater in the inside reaches the water governor from a passage (not shown), passes through the side hole 6 of the valve seat body 2, enters the outlet side room K, and passes between the seat surfaces 7, 9. Subsequently, the water passes through the central water passage R from the lateral hole 8 of the valve 31 via the second chamber H. Then, the waste water reaching the first chamber J of the valve 31 exits the water governor and is discharged to the outside of the water heater through a passage (not shown). In other words, the flow is completely opposite to the flow of water during the operation of the water governor. After draining operation,
Even when the water is completely drained, water droplets tend to adhere particularly to the corner L of the first chamber J of the valve 31, and the water droplets often reach the water passage hole R due to surface tension. Then, for example, as shown in FIG. 5, the water film W is formed so as to stick around the water passage hole R, and the water passage hole R may be kept closed.

[0006] As described above, the size of the water passage hole R is required to be reduced until a pressure difference is generated.
The film tension of the water holes R is promoted by the surface tension, and this is one of the causes of the drainage remaining in the water governor during the drainage operation. If the water film W is frozen in a state where the water film W remains in the water holes R of the water governor, when the water heater is reused without freezing being released, the water governor does not work and hot water cannot be supplied. Therefore, the user could not use the water heater until the freeze was released. In addition, since the draining operation was performed properly, it was often mistaken as a failure. An object of the present invention is to solve the above-mentioned problem and to surely drain water from a water governor.

[0007]

In order to solve the above-mentioned problems, a first water governor of the present invention comprises a first chamber to which water is supplied from below, and a first water governor which is connected to the first chamber through a water hole. A water governor comprising a valve formed with a second chamber communicating in the direction, wherein the valve is moved in accordance with a pressure difference between the first chamber and the second chamber to change a flow path area and adjust a flow rate. In the first room, a drainage guide wall is provided downward from the water hole.
In addition , the gist of the present invention is that the drain guide wall is provided with a drain groove extending downward from the water hole.

[0008]

In the water governor of the present invention having the above structure, the drainage guide wall is provided downward from the water hole of the valve, so that the surface tension of the water hole is disturbed by the unevenness. In addition to preventing the film from being stretched, the drainage guide wall is guided to drain the water. By this action, the water governor can be drained with certainty, so that the water governor is prevented from being frozen with the drainage film remaining covered with water.
As a result, when reusing a fluid controller such as a water heater,
The inconvenience that the water governor does not work due to the fact that the water governor valve does not pass water is eliminated. Furthermore, since the water-passing hole is provided with a drainage narrow grooves facing down direction, in addition to the above effects, since the resulting water moves downward due to capillary action of the drainage narrow groove, the water passing hole film Tension is prevented.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the configuration and operation of the present invention described above, a preferred embodiment of the water governor of the present invention will be described below. FIG. 1 is a schematic configuration diagram of a water governor as one embodiment, and FIG. 2 illustrates a drainage structure of a valve constituting the water governor. In FIG. 2, (A) shows A in FIG. An arrow view is shown, and (A) is a BB sectional view of (A). The water governor includes a substantially cylindrical valve seat body 2 and a valve 1 inserted therein, as shown in FIG. 1, except for the shape of the first chamber G of the valve 1 according to a conventional technique (FIG. Since the configuration and operating principle are the same as those of the water governor described in FIGS. 3 and 4), the description is omitted.

The first chamber G of the water governor valve 1 of the present embodiment.
For example, as shown in FIGS.
, A protruding thin wall (hereinafter referred to as a drain guide wall S) extends toward the water inlet so as to surround the water passage hole R by a half circumference. In other words, the cylindrical member that surrounds the water hole R is cut in half along the axial direction from the center. In addition, in the center of the inner surface of the drain guide wall S facing the water passage hole R, a narrow drain groove T is formed straight in the water inlet direction. When a water draining operation is performed in a water heater in which the water governor is installed with the second chamber H facing upward, almost the same as the prior art (FIG. 3) shown above, as indicated by an arrow C in FIG. Drained to

When the draining operation is completed, finally, the water film W tries to stretch in the water hole R of the water governor, for example, as shown in FIG. Is divided and no film is formed, and the drainage narrow groove T is directed downward (toward the water inlet).
As shown by an arrow C in FIG. 2A, the water is drained downward along the drainage narrow groove T. In other words, not only the surface tension of the water film of the water passage hole R is cut off by the drain guide wall S, but also the drainage of water downward along the drain groove T due to its own weight and the capillary action of the drain groove T. Be guided. Therefore, even if the water droplet X slightly remains at the lower portion of the drain guide wall S, the water droplet X does not reach the water passage hole R and the film of water does not occur. This is because the water droplet X falls under its own weight when it reaches a certain size, and while the water droplet X is small, there is no capacity for water to overcome the gravity and reach the water passage hole R. Of course, it goes without saying that the length of the drain guide wall S in the drain direction (downward direction) is designed to be a certain length or more so as to satisfy this condition. Further, even after the water draining operation is completed, even if the drips drop from the second chamber H side into the water passage hole R, the surface tension is similarly divided by the drain guide wall S, and the capillary phenomenon of the drain narrow groove T is also caused. Since the water is drained downward by the action, water filming does not occur. Although the embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and it goes without saying that the present invention can be implemented in various modes.

[0012]

[Effects of the Invention] As described in detail above, the water governor of the present invention is provided with a drain guide wall which assists drainage from the water passage hole of the valve. Prevents the film from becoming drained and eliminates residual water. For this reason, the water governor is prevented from freezing with insufficient drainage, and the inconvenience that the valve does not operate normally without passing water is eliminated. Furthermore, the provision of the drainage narrow groove in the drainage guide wall of the valve not only disturbs the surface tension, but also has an excellent effect that the drainage is induced by the capillary phenomenon, and the drainage can be performed more reliably.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a water governor as one embodiment.

FIG. 2 is a diagram showing a shape of a valve of the water governor.

FIG. 3 is a schematic configuration diagram of a water governor as a conventional example.

FIG. 4 is a view as viewed from an arrow D in FIG. 3;

FIG. 5 is a diagram showing a shape of a conventional valve.

[Explanation of symbols]

 1,31 valve 2 valve seat body 3 spring 7,9 seat surface R water passage hole S drain guide wall T drain groove

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F16K 17/30 F16K 51/00

Claims (1)

(57) [Scope of request for utility model registration] 1. A valve having a first chamber to which water is supplied from below and a second chamber communicating with the first chamber upward through a water hole, the first chamber and the first chamber being provided. In the water governor, in which the valve is moved in accordance with the pressure difference between the two chambers to change the flow area and adjust the water flow rate, the first chamber is provided with a drain guide wall extending downward from the water flow hole. al is, and, in the waste water guide wall, the water flow
A water governor characterized by having a drain groove extending downward from the hole .