JP3210114B2 - Single-lever water / water mixer tap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel single-type water heater in which the temperature of the hot water is easily adjusted by making the change in the opening amount of one of the hot water and the water hole near an appropriate temperature of the hot water. The present invention relates to a lever type hot / water mixer tap.

[0002]

2. Description of the Related Art As shown in FIG. 4, a main part of a mixing mechanism is disassembled in FIG. A mixing mechanism g is continuously provided on the outer box z, and the mixing mechanism g is provided with inflow holes a and b of hot water and water, and a fixed valve plate d formed through an outflow hole c of the mixed hot water, It slides and rotates in close contact with the fixed valve plate d, and maintains the outflow hole c in a fully open state to maintain the inflow port a.
A movable valve plate e provided with a through hole f capable of fully closing or selectively communicating the opening amount (area) of b, and engaging with the movable valve plate e to form an integral body and communicating with the through hole f on the lower surface; A rectangular hole l into which the lower end h of the rod j is engaged is formed on the upper surface of a guide plate m having a mixing chamber (not shown) formed therein through a rotary lid i. The movable valve plate e can be driven and rotated by the operation of the pivot rod j which engages with the movable valve plate e. In the drawing, n indicates a water discharge pipe, and o indicates a pin for supporting a shaft of a rod j.

[0003] The configuration of the flow path by the fixed valve plate d and the movable valve plate e in the mixing mechanism section, in particular, the procedure for adjusting the mixed hot water amount is as shown in FIGS. 5A, 5B and 5C. . That is, [A] slides on the fixed valve plate d
透 At the position where the rotatable movable valve plate e is retracted (moved upward in the figure), the through hole f shows a state in which the hot water hole a and the water hole b of the fixed valve plate are completely closed. When the through hole f is aligned with the axis XX of the fixed valve plate at the position where e is the most advanced (sliding downward in the figure), the hot water hole a and the hot water hole b are equal. The movable valve plate e is moved from this state in the direction of the arrow (FIG.
(Upward, clockwise) , and as the angle (α) between its axis XX and the center line YY of the fixed valve plate increases, the amount of the water hole increases by substantially the same amount as the opening amount of the water hole a. b is closed and reduced. That is, even though the amount of hot water flowing into the mixing chamber from both holes is substantially constant, the hot water: water amount ratio is increased or decreased by a factor of two. However, there was a problem that the temperature of the hot water changed rapidly and it was difficult to obtain an appropriate temperature.

[0004]

In view of such circumstances, the present inventor has made intensive experiments and studies, and as a result, provided a projection of a fixed width on the inner edge of the through hole of the movable valve plate straddling the hot water hole and the water hole. Thus, it is noted that, when the rotation angle (α) of the movable valve plate is in the range of ± 0 ° to 15 °, the opening amount of either the hot water hole a or the water hole b can be kept substantially constant.

That is, a mixing valve is connected to an outer casing of a mixing pipe communicating with a hot water pipe and a water pipe, and the mixing mechanism is provided with a fixed valve plate having an outflow hole, a hot water hole, and a water hole, respectively. If, as a slide-rotatable in close contact with the stationary valve plate, in a single-lever mixing faucet whose hole has a movable valve plate or the like can be selectively opening and closing the Juanar and water holes, the Movable valve plate
During the rotation of the movable valve plate by a fixed amount,
Part of the hot water hole or water hole whose opening amount gradually increases due to the rotation is blocked.
And the amount of opening is substantially reduced by canceling the gradual increment and the shielding amount.
In which it took measures that Ru provided with projections for hot water temperature adjustment can kept constant.

[0006]

The movable valve plate in the hot and cold water mixing tap of the present invention having the above-mentioned structure has a rotation angle of ± 15 ° from a position set so that the center line of the fixed valve plate coincides with the center of the projection of the movable valve plate. In the range, the opening amount of one of the hot water hole and the water hole can be maintained substantially constant, and only the opening amount of the other holes gradually decreases (increases).

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will now be described in more detail with reference to the drawings showing one embodiment. FIG. 1 shows a conventional mixing valve in a conventional hot and cold water mixing tap illustrated in FIG. Only a flow path configuration is shown, 1 is a fixed valve plate having a hot water hole 1a, a water hole 1b and an outflow hole 1c penetrating therethrough, and 2 is in close contact with the fixed valve plate 1 and on the fixed valve plate. Is a movable valve plate that is slidable and rotatable by a fixed amount, and has a through hole 2a at the center portion for selectively opening and closing the hot water hole 1a and the water hole 1b while keeping the outflow hole 1c in a fully opened state. .

According to the present invention, there is provided a through hole 2a in the movable valve plate.
Of the fixed valve plate 1 when the movable valve plate 2 rotates.
The technical content is that a protrusion 2b of a fixed width is formed at a position passing over the hot water hole 1a and the water hole 1b. Other components of the mixing mechanism are substantially the same as those of a conventionally known mechanism. Therefore, the overall configuration of the mixing mechanism is omitted in this section.

The width of the projection 2b is fixed to the fixed valve plate 1.
It is preferable to correspond to the opening width of the hot water hole 1a and the water hole 1b in the above, and the length may be of an extent corresponding to the width length of both holes 1a and 1b.

The projection 2b should originally be formed only on the side of the fixed valve plate 1 that straddles the two holes 1a and 1b. However, in order to simplify the assembly of the mixing mechanism, the projection 2b has a through hole. The projections 2b can be freely provided at the symmetrical positions (see FIG. 1B).

1 and 2, for the sake of simplicity of explanation, the hot water holes 1a and water holes 1b of the fixed valve plate have the same shape and the same area, and the projection 2b is formed with the axis X of the through hole 2a of the movable valve plate. -What is provided on the X-ray will be described. In this case, at a position where the center line YY of the fixed valve plate coincides with the axis XX of the movable valve plate, the movable valve plate 2 moves on the fixed valve plate 1 to the most advanced position (downward in the figure). For example, the projection 2b of the through hole 2a is located between the hot water hole 1a and the water hole 1b, and opens both holes 1a and 1b equally (see FIG. 2A).

If this point is set to a rotation of 0 ° and the rotation direction of the movable valve plate 2 is set to a positive rotation when the temperature of the hot water is lowered by squeezing the hot water hole 1a, the rotation is 0 ° to 15 °. Around (Fig. 2 [a]-
Until (c), the opening amount of the hot water hole 1a steadily decreases with the movement of the through hole 2a, while the opening amount of the hot water hole 1a decreases with the movement of the through hole 2a.
The water hole 1b whose opening amount gradually increases is partially formed by the projection 2b.
As a result, the opening amount is kept substantially constant.
You. Therefore, during this period, only the amount of hot water supplied to the mixing chamber gradually decreases, and the amount of water becomes substantially constant. Therefore, the temperature of the hot water can be adjusted with a gentle temperature gradient.

Table 1 shows actual measurement results of changes in the opening amounts of the hot water hole 1a and the water hole 1b corresponding to the degree of rotation of the movable valve plate 2 according to this embodiment.

[Table 1]

That is, although the water side opening area from 0 ° to 15 ° almost does not change, it gradually increases at a substantially constant ratio from about 20 °, while the water hole side has 0 ° to 45 °. Meanwhile, a decrease is seen at a substantially constant rate. The same result was observed on the minus side (at the time of opening the hot water side).

FIG. 3 shows this as a graph.

According to the technical idea of the present invention, the setting position of the projection 2b in the through hole 2a of the movable valve plate is not limited to the axis XX of the through hole. When it is clear that the temperature is low, the protrusion 2b is provided at a position closer to the water hole 1b side than on the axis of the through hole. It is.

[0017]

As described above, according to the single-lever type hot / water mixer tap of the present invention, the handle operation in adjusting the optimum hot water temperature by changing the mixing ratio of hot / cold water flowing into the mixing chamber is achieved. ± 0 ゜ ～ 15 regardless of the rotation direction of
Since the flow area of either hot water or water inflow hole is kept substantially constant over a wide range of ゜, the temperature change in this area becomes gentle, in other words, the rotation amount of the handle can be operated large. In addition to significantly simplifying the temperature setting, even when the water pressure difference between the hot water side and the water side is large, the same effect as described above can be obtained by shifting the installation position of the projection at the inner edge of the through hole of the movable valve plate by a required amount. Thus, the structure is simplified, and a remarkable advantage that cannot be expected from the conventional single lever type hot / water mixer tap of this type can be obtained.

[Brief description of the drawings]

1] [A] is a plan view of a fixed valve plate, [B] is a plan view of a movable valve plate according to the present invention, [FIG.

FIG. 2 is a plan view showing a change in opening amount of hot water holes of a fixed valve plate and a movable valve plate in the hot and cold water mixing tap of the present invention.
゜, [B] is 10 °, [C] is 15 °, [D] is 20
ホ and [e] are 40 ° and [he] is the final 45 °.

FIG. 3 shows ± 45 of the movable valve plate in the hot and cold water mixing tap of the present invention.
Graph showing the change in hot water hole opening amount with rotation of ゜,

FIG. 4 is an exploded view showing a main configuration of a mixing mechanism in a conventional hot and cold water mixing tap,

FIG. 5 is a plan view showing a change in opening amount of hot water holes of a conventional fixed valve plate and a movable valve plate.
[B] shows the same open state, and [C] shows one fully closed state (the other side is fully open).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fixed valve plate 1a Hot hole 1b Water hole 1c Outflow hole 2 Movable valve plate 2a Through hole 2b Projection

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F16K 11/00-11/24

Claims (1)

(57) [Claims] A fixed valve plate having a mixing mechanism connected to an outer casing communicating with the hot water pipe and the water pipe, the mixing mechanism being provided with an outflow hole, a hot water hole, and a water hole, respectively; A single lever comprising a movable valve plate which is slidable and rotatable in close contact with the fixed valve plate and which can selectively open and close a hot hole and a water hole in a state where the through hole communicates with the outflow hole. The above-mentioned
On the inner edge of the through hole of the movable valve plate, rotate the movable valve plate by a fixed amount.
During this time, the hot water hole or water hole whose opening amount gradually increases due to the rotation
Is partially shielded, and the opening is formed by canceling the increment and the shielded portion.
A single-lever hot / water mixer tap having a projection for adjusting the hot water temperature capable of keeping the amount substantially constant .