JPH05606Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention has a water chamber and a hot water chamber separated by a partition wall formed inside the faucet body, and the cold water supplied to the water chamber and the hot water chamber are separated from each other by a partition wall. The present invention relates to an improvement in a hot water mixing faucet that mixes and discharges supplied hot water.

[Prior Art] For example, there is a single-lever type mixing faucet. 5 and 6 show the general structure of a single-lever type hot water mixing faucet 1. FIG. That is, in this hot water mixing faucet 1, the inside of the faucet main body 1a is divided by partition walls 2 and 3 into a water chamber 4, a hot water chamber 5, and a hot water mixing chamber 6. In a valve chamber 7 communicating with these chambers 4, 5, and 6, there is disposed a flow rate regulating valve 10, which is made of a pair of ceramic fixed plates 8 and movable plates 9 superimposed in a watertight and slidable manner. There is. The fixed plate 8 has a water inlet 8 a communicating with the water chamber 4 , a hot water inlet 8 b communicating with the hot water chamber 4 , and a mixed hot water outlet 8 c communicating with the mixing chamber 6 on the overlapping surfaces of the fixed plate 8 . The movable plate 9 has an overlapping surface,
A distribution channel 9a is formed to turn ON/OFF the communication state between the water inlet 8a of the fixed plate 8 and the mixed hot water outlet 8c, and the communication state between the water inlet 8a and the mixed hot water outlet 8c of the fixed plate 8. . The water chamber 4 and the hot water chamber 5 are connected to a water supply pipe 13 and a hot water supply pipe 14 via legs 11 and 12, respectively. An upstream stop valve 15 and a downstream check valve 16 are arranged within the legs 11 and 12. Legs 11,1
2 and hot water supply pipes 13 and 14 are so-called hot water supply passages. The check valve 16 is used to prevent hot water from flowing back toward the supply side if the pressure in the water chamber 4 or the hot water chamber 5 increases for some reason. It is. The temperature of hot water is adjusted by rotating the lever 17 left and right to adjust the amount of hot water flowing into the mixing chamber 6.

[Problems to be solved by the invention] However, in the hot water mixing faucet 1 in which the check valves 16, 16 are arranged, when only hot water is being supplied, the partition walls 2 and 3 and the faucet main body 1a The water in the water chamber 4 is heated through the outer shell of the tank and expands. At this time, the water chamber 4 is in a sealed state by the flow control valve 10 and the check valve 16. As a result, the pressure in the water chamber 4 increases abnormally due to the expansion of the water in the water chamber 4, and the ceramic valve body is pressed into contact with the ceramic valve body more than necessary, resulting in poor slippage between the two and making it difficult to operate the handle 17. The faucet body 1a has the disadvantage of becoming
However, it had drawbacks such as early fatigue failure. The pressure inside the water chamber 4 is sometimes 100
It could even reach Kgf/ ^cm2 .

[Purpose of the invention] In order to solve the above-mentioned conventional problems, the present invention is designed to release expanded water corresponding to the pressure increase from the water chamber to the hot water chamber when the pressure inside the water chamber increases. The purpose is to provide mixed taps.

[Means for solving the problems] The means of the present invention for solving the above problems are as follows:
A water chamber and a hot water chamber separated by a partition wall are formed inside the faucet body, and a water supply passage communicating with the water chamber is
In a hot water mixing faucet equipped with a check valve, the water chamber and the hot water chamber are communicated with each other through a small communication hole bored in the partition wall.

[Function] When only hot water is continuously supplied, the water sealed in the water chamber expands and its pressure gradually increases. Then, the expanded water passes through the small communicating holes in the partition wall and flows out into the water chamber where the pressure is low. As a result, it is possible to prevent the pressure inside the water chamber from becoming too high.

[Description of Embodiments] The configuration of a hot water mixing faucet according to the present invention (hereinafter referred to as the "inventive faucet") will be described below based on an embodiment shown in the drawings.

(First Embodiment) FIGS. 1 and 2 show a first embodiment of the water faucet of the present invention. The structure of the hot water mixing faucet 21 except for the structure of the partition wall 22 is the same as the conventional one shown in FIGS. 5 and 6, and the same reference numerals represent the same members.

The main improvement in the proposed faucet 21 is that the partition wall 2
The water chamber 4 and the hot water chamber 5 are made to communicate with each other through a small communication hole 23 formed in the water chamber 2. The communication small hole 23 is 0.3
The diameter should be ~1.0mmφ. The drilling of the communicating small hole 23 is as follows:
This is done by drilling after casting the faucet body 1a.

(Second Embodiment) FIGS. 3 and 4 show a second embodiment of the faucet according to the present invention. The faucet 31 of the present invention is for supplying hot water to a bathtub, and the interior of the faucet body 31a is formed by partition walls 32 and 33, including a water chamber 34, a hot water chamber 35, and a hot water mixing chamber 3.
It is divided into 6. Between the water chamber 34 and the mixing chamber 36 and between the hot water chamber 35 and the mixing chamber 36, a fixed plate 38 and a movable plate 39 made of ceramic are superimposed in a watertight and slidable manner. Flow control valve 4
0 is placed respectively. The above water chamber 34 and bath chamber 3
5 is connected to the water supply pipe 13 and the hot water supply pipe 14 via legs 41 and 42, respectively. Legs 4
A water stop valve 15 on the upstream side and a check valve 16 on the downstream side are disposed within the valves 1 and 42 . Legs 41, 42
The hot water supply pipes 13 and 14 are so-called hot water supply passages.

The partition wall 32 has a small communication hole 43 formed therein, and the water chamber 3
4 and a bath room 35 are communicated with each other. Communication small hole 43
should be approximately 0.3 to 1.0 mmφ. The communicating small holes 33 are formed by drilling after the faucet main body 31a is cast. Note that if the center line A of the communicating small hole 43 and the center line B of the valve holding part 31b of the faucet main body 31a are aligned, it will be easier when cutting the communicating small hole 43 and the valve holding part 31b using a machining center. It is convenient for

When only hot water is being supplied, the water chamber 34 is sealed by the flow control valve 40 and the check valve 16, which are in a water-stop state. The water in chamber 34 is warmed and expands. Expanded water in the water chamber 34 is removed from the partition wall 3
The water chamber 3 with low pressure passes through the small communication hole 43 of 3.
Flows into 5.

[Effects of the invention] As detailed above, in the case of the present invention, even if expanded water is generated in the water chamber of a hot and cold water mixing faucet, the expanded water is transferred to the water chamber through the communicating small hole bored in the partition wall. Since it is possible to provide relief, it is possible to prevent the pressure in the water chamber from increasing, and there will be no inconvenience such as difficulty in operating the lever or the like. In addition, due to the repeated history of cooling and heating cycles due to repeated use,
There is no possibility that the faucet body will become fatigued and break down prematurely.

[Brief explanation of drawings]

Figures 1 and 2 show the first embodiment of the water faucet according to the present invention. Figure 1 is a front view showing the main part in cross section, and Figure 2 is a right side view showing the main part in cross section. side view,
Figures 3 and 4 show a second embodiment of the faucet according to the present invention, with Figure 3 being a front view showing a cross section of the main part, and Figure 4 being a plane view showing a cross section of the main part. Figure, 5th
6 and 6 show a conventional hot and cold water mixing faucet, and FIG. 5 is a front view showing a cross section of the main part;
FIG. 6 is a right side view showing a cross section of the main part. 1a, 31a... Faucet body, 4, 34... Water chamber, 5, 35... Water chamber, 16... Check valve, 22,
32... partition wall, 23, 43... communicating small hole.

Claims (1)

[Scope of utility model registration request] In a hot/cold water mixing faucet, a water chamber and a hot water chamber are formed inside the faucet body, separated by a partition wall, and a check valve is disposed in a water supply passage communicating with the water chamber.
A hot water mixing faucet characterized in that a water chamber and a bath chamber are communicated with each other through a small communication hole drilled in the partition wall.