JPS626372Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to a hot water mixing faucet that can appropriately mix hot water and water to obtain hot water at a required temperature.

(Prior Art) Many different kinds of mixing faucets of this type have already been proposed. However, the reality is that no hot water mixing faucet that solves all of the following problems has yet been proposed. In other words, normally there is a difference of about 10:1 in the pressure of the water and hot water that is supplied, and the water is not stopped on the water and hot water side (primary side), but on the hot water side (after mixing hot water, that is, secondary side). If the structure was designed to stop water, there was a possibility that one side would flow back into the other. Therefore, this type of hot water mixing faucet needs to be configured to shut off the water on the primary side.

The water and hot water that pass through this type of hot water mixer faucet contain some impurities, and when these impurities adhere to the various parts of the hot water mixer faucet, they (usually called lime scale) cause various This prevents the members from operating smoothly.

This type of hot water mixer faucet is used frequently and for many years, and needs to be constructed compactly so that it is suitable for human use.

(Purpose of the invention) This invention was made to meet the above requirements, and its purpose is to be able to reliably stop water on the primary side.

It must be able to withstand long-term use by preventing limescale from adhering to it.

To make the configuration compact for ease of use and repair.

Our goal is to provide a mixer faucet with hot and cold water.

(Structure) In order to achieve the above object, the present invention provides first and second annular protrusions in the circumferential direction of the inner surface of the valve body so that the inside of the valve body can be used as a hot water chamber, a water chamber, and a hot water chamber. A cylinder body having a hot water opening, a cold water opening, and a hot water opening is fitted inside each of these annular protrusions, and inside this cylinder body, the first annular protrusion is disposed inside the first annular protrusion. A control valve body is fitted so as to be movable in the axial direction of the valve body, and the control valve body is in contact with one end surface of the control valve body to sense the temperature of hot water flowing in from the control valve body side, and to detect the temperature within the valve body. The first annular protrusion of the control valve body is controlled by a temperature sensing element that is fitted so as to be movable in the axial direction and a flow rate adjustment knob that is in contact with the other end surface of the control valve body and is provided at the other end of the valve body. a flow rate adjusting body for positioning; a first spring disposed on one end side of the temperature sensing body and adjusting elastic force against the temperature sensing body by a temperature adjustment knob provided at one end of the valve body; A second spring is interposed between the control valve body and the flow rate adjustment body and whose elastic force against the control valve body is adjusted by the flow rate adjustment knob, and a second spring is inserted between the control valve body and the flow rate adjustment body. It has lubricity by being integrally molded with fluororesin, and the hot water and water in the hot water chamber and the water chamber are mixed around the temperature sensing element and then led out into the hot water chamber. The gist of this idea lies in the hot water mixer faucet, which is characterized by the fact that

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a hot water mixing faucet 100 according to the present invention.
A cross-sectional plan view of is shown. This FIG. 1 is a front view of the hot water mixing faucet 100 shown in FIG.
This is a diagram viewed along the line. A hot water supply pipe 11 and a water supply pipe 12 are respectively connected to the valve body 10 of the hot water mixing faucet 100, and these hot water supply pipes 11 and water supply pipes 12 are connected to the valve body as shown in FIGS. 1 and 6. It communicates with a hot water chamber 10a and a water chamber 10b in the valve body 10, respectively, through a hot water supply port 11a and a water supply port 12a formed in the valve body 10. Each of the hot water chambers 10a and the water chambers 11b is partitioned by a first annular ridge 16 and a second annular ridge 17 formed in the circumferential direction on the inner surface of the valve body 10, respectively. Further, a temperature adjustment knob 15' and a flow rate adjustment knob 14 are provided at both left and right ends of the valve body 10.
are installed respectively, while the valve body 1
At the bottom of 0, as shown in FIG.
3 is provided. The switching device 13 is connected to the valve body 1
The hot water flowing out from the hot water chamber 10c of No. 0 is switched to the faucet 13c side or the shower connection port 13d side to flow out by the switching valve body 13b which is moved back and forth by the rotation of the switching knob 13a. .

As shown in FIG. 1, a cylindrical body 20 is fitted into the valve body 10 in a liquid-tight manner via seal rings 20a to 20c provided around the cylindrical body 10. Further, this cylinder body 20 is connected to the valve body 1
The actuating rod 31 of the first plug 21 attached to the left end in the drawing and the second plug 22 attached to the right end in the drawing of 0
It is supported and fixed within the valve body 10 by. Furthermore, this cylindrical body 20 has a hot water opening 23a,
A water opening 23b and a hot water opening 23c are formed, respectively, and a control valve body 30, a temperature sensing body 40, and a flow rate adjustment body 50 are housed within this cylinder body 20. The cylindrical body 20 has a flange 20d formed on the outer periphery of the annular protrusion 1 formed on the left side of the second annular protrusion 17 inside the valve body 10.
By coming into contact with 8, it is positioned at a predetermined position within the valve body 10.

The control valve body 30 is integrally formed of plastic, and as shown in FIG. 7, a plurality of openings 30a to 30a in the axial direction are formed inside thereof, and both left and right end surfaces 30b, 30b are They are circular planes parallel to each other. This control valve body 3
0 is located inside the first annular protrusion 16 of the valve body 10 when inserted into the valve body 10 together with the cylinder body 20, and is located at the opening 2 for each hot water of the cylinder body 20.
3a and the water opening 23b, and is movable in the axial direction of the valve body 10. This control valve body 30 has a left end surface 30b as shown in the figure.
The water stopper end face 24 formed inside the water opening 23b of the cylindrical body 20 can be brought into contact with the water stopper end face 24 at the cylindrical body 20.
Further, the control valve body 30 is integrally molded from a lubricating resin, that is, a tetrafluoroethylene resin in this embodiment. Further, one end of a temperature sensing element 40 is in contact with one end (left side in the figure) of the control valve body 30, and a second spring 7 is in contact with the other end.
0 and the flow rate regulator 50 are in contact with each other.

The temperature sensing element 40 is configured such that its actuator 41 expands or contracts due to the expansion or contraction of the temperature sensing material sealed therein. The temperature sensing portion 42 of the temperature sensing element 40 is located between the water opening 23b and the hot water opening 23c formed in the valve body 10 when inserted into the valve body 10 together with the cylinder body 20. Actuator 41
is in contact with the pressing member 61 which is urged rightward in the figure by the first spring 70 . Further, the temperature sensing element 40 is movable within the cylindrical body 20 in the axial direction of the valve body 10.

The pressing member 61 is housed within the support member 21a within the first plug 21. This support member 21a
The temperature adjustment knob 15 is screwed into and out of the operating shaft 21b assembled in the first plug 21.
By rotating the temperature adjustment knob 15, the operating shaft 21b, which is integral with the temperature adjustment knob 15, rotates, and thereby the support member 21a moves back and forth with respect to the first plug 21. In addition, the pressing member 61 and the first plug 21
The first spring 60 mentioned above is interposed between them. Therefore, by rotating the temperature adjustment knob 15, the position of the pressing member 61 relative to the cylinder body 20 can be changed as appropriate, and the pressing member 61 is always elastically moved to the right in the figure by the first spring 60. energized.

On the other hand, the other end (right side in the figure) surface 30b of the control valve body 30
The flow rate regulator 50 can be brought into close contact with the flow rate regulator 50 . A second spring 70 having a weaker biasing force than the first spring 60 is interposed between the flow rate regulator 50 and the control valve body 30, and the biasing force of the second spring 70 causes the flow rate regulator 50 to is biased to the left in the figure. Moreover, this flow rate adjusting body 5
0 is prevented from coming off from the cylinder body 20 by a retaining body 32 fixed to the left end of the cylinder body 20 in the figure, and the cylinder body 20 is prevented from coming off from the retaining body 32 on the left end surface thereof.
The end of the actuating rod 31 inserted therein abuts. The actuating rod 31 is screwed into and out of the second plug 22, and by rotating the flow rate adjustment knob 14, an actuation shaft 22b integral with the amount adjustment knob 14 is rotated. This causes the actuating rod 31 to move back and forth relative to the second plug 22. Therefore, the flow rate adjusting body 50 is always in contact with the actuating rod 31 due to the biasing force of the second spring 70, and is moved in the axial direction of the cylinder body 20 by rotating the flow adjusting knob 14. , the position relative to the water stopper end face 24 formed on the cylinder body 20 is adjusted.

(Function) The function of the hot water mixer faucet 100 configured as above will be explained. First of all, this hot water mixer faucet 100
When the control valve body 30 is not used, as shown in FIG.
b are in close contact with the water stop end face 24 of the cylinder body 20 and the flow rate regulator 50, respectively. This is because the flow rate adjustment body 50 is pressed against the water stop end face 24 formed on the cylinder body 20 by rotating the flow rate adjustment knob 14 to its water stop position. At this time, the hot water chamber 10a and the water chamber 10b are completely isolated by the cylindrical body 20, the control valve body 30, and the flow rate regulating body 50, and there is no communication between them. Therefore, the hot water mixer faucet 100 is completely in a water-stop state.

From this state, when the actuating rod 31 is moved to the right in the figure by rotating the flow rate adjustment knob 14, a predetermined gap is formed between the water stop end surface 24 of the cylinder body 20 and the flow rate adjustment body 50. . As a result, the tight contact between the left and right sides of the control valve body 30 is released, and as shown in FIG.
0 and the flow rate regulator 50 are opened, and the hot water chamber 10a passes through each opening 30a of the control valve body 30 to the temperature sensor 40.
It communicates with the surroundings of the temperature sensing section 42 . This temperature sensing part 42
As shown in FIG.
3c side or the shower connection port 13d side, the hot water flowing around the temperature sensing part 42 through the hot water chamber 10a heats the temperature sensing part 42 while flowing from the faucet 13c or the shower connection port 13d. leak.

At this time, the faucet 1 is adjusted by the temperature adjustment knob 15.
3c or the temperature of the hot water flowing out from the shower connection port 13d is set lower than the temperature in the water chamber 10a (this is normal), the control valve body 30
moves slightly to the right in the figure to form a gap between the water stopper end faces 24 of the cylinder body 20. This is because the temperature sensing element 42 is heated by the hot water.
The actuator 41 expands, and due to its reaction, the temperature sensing element 40 itself touches the control valve element 3 at its right end surface.
This is because 0 is pushed to the right in the figure. Of course, the amount by which the control valve body 30 is pressed is determined in advance by appropriately setting the amount of rotation of the temperature adjustment knob 15. Therefore, the water chamber 10b and the surroundings of the temperature-sensing section 42 communicate with each other, and the water in the water chamber 10b flows around the temperature-sensing section 42 together with the hot water in the hot water chamber 10a, and is mixed with the hot water in the hot water chamber 10a. temperature).

In addition, if you want to use only water with this hot water mixer faucet 100, turn the temperature adjustment knob 15 so that the pressing member 61 inside the first plug 21 moves as far to the right as possible. good. This is controlled by the flow rate adjustment knob 14 of the hot water mixing faucet 100.
4, the control valve body 30 moves to the right end in the figure, opening only between the water stop end surface 24 of the cylinder body 20 and the control valve body 30, and opening the water chamber. This is because only the hot water chamber 10b and the hot water chamber 10c communicate with each other.

(Effects) According to the hot water mixer faucet 100 according to the present invention configured as described above, the water stop can be stopped only in the hot water chamber 1 which is the primary side.
This can be done by cutting off the communication between water chamber 10a and water chamber 10b.
0a and the water chamber 10b are reliably closed, and the water chamber 1
There is no possibility that water or hot water will flow backwards between the water chamber 0a and the water chamber 10b. Furthermore, the water can be easily stopped by simply tightening the flow rate adjustment knob 14.

In addition, since the control valve body 30 is integrally molded from tetrafluoroethylene resin, it goes without saying that the control valve body 30 can operate smoothly. There's nothing to do. In this embodiment, the control valve body 30 is moved in the axial direction of the valve body 10 inside the first annular protrusion 16 that partitions the water chamber 10a and the water chamber 10b. This is because the inflow of hot water is switched in the vicinity of the control valve body 30 to reduce the number of areas where limescale may adhere. Therefore, even if this hot water mixing faucet 100 is used for a long period of time, the control valve body 3
0 operation can always be performed in the best condition.

Furthermore, in this hot water mixing faucet 100, the first annular protrusion 16 and the second annular protrusion 17 constitute the hot water chamber 10a, the water chamber 10b, and the hot water chamber 10c, and the control valve body 30, temperature sensitive body 4
0 and the flow rate regulator 50 are housed in one cylindrical body 20, which is fitted into the valve body 10, so the overall configuration can be made compact and convenient for use. . Moreover, even if the hot water mixer faucet 100 breaks down, by removing the first plug 21 and pulling out the cylinder 20, each member inside the cylinder 20 can be taken out as is, and repairs and adjustments can be made. It is extremely easy to do.

(Summary) In short, in the present invention, as exemplified in the above embodiment, first and second annular protrusions are provided in the circumferential direction of the inner surface of the valve body, and a water chamber and a water chamber are formed inside the valve body. A cylindrical body having a hot water opening, a cold water opening, and a hot water opening is fitted inside each of these annular ridges to form a section as a hot water chamber, and inside this cylindrical body, a cylindrical body having a hot water opening and a hot water opening is inserted into the inner side of each of the annular ridges. A control valve body is disposed and inserted into the valve body so as to be movable in the axial direction of the valve body, and a control valve body that comes into contact with one end surface of the control valve body to sense hot water flowing in from the control valve body side and inside the valve body. The first ring-shaped protrusion of the control valve body is controlled by a temperature sensing element fitted so as to be movable in the axial direction of the control valve body, and a flow rate adjustment knob that is in contact with the other end surface of the control valve body and is provided at the other end of the valve body. a flow rate regulating body for positioning with respect to the temperature sensitive body; and a first spring arranged on one end side of the temperature sensitive body and adjusting elastic force against the temperature sensitive body by a temperature adjustment knob provided at one end of the valve body. and a second spring that is interposed between the control valve body and the flow rate adjustment body and whose elastic force against the control valve body is adjusted by the flow rate adjustment knob; The body is integrally molded from fluorocarbon resin to provide lubricity.
The feature lies in that the hot water and water in the hot water chamber and the water chamber are mixed around the temperature sensing element and then led out into the hot water chamber, thereby ensuring water stoppage on the primary side. It is possible to make the product durable enough for long-term use by preventing limescale from adhering to it, and to make the structure compact for ease of use and repair. We can provide a mixer faucet for hot and cold water.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional plan view taken along the - line in Fig. 5 showing a hot water mixing faucet according to the present invention, and Figs. 2 to 4 are drawn centering on this to show the operation of the control valve body. 5 is a front view of the hot water mixing faucet, FIG. 6 is a sectional view taken along the line - in FIG. 1, FIG. 7 is an enlarged perspective view of the control valve body 30, and FIG. FIG. 2 is a longitudinal sectional view taken along the - line in FIG. 1; Explanation of symbols, 10... Valve body, 10a...
Bath room, 10b...Water room, 10c...Hot water room, 14
...Flow rate adjustment knob, 15...Temperature adjustment knob,
16...First annular protrusion, 17...Second annular protrusion,
20... Cylindrical body, 23a... Opening for hot water, 23b...
Water opening, 23c... Hot water opening, 30... Control valve body, 40... Temperature sensing element, 50... Flow rate adjustment body, 6
0...First spring, 70...Second spring.

Claims (1)

[Claims for Utility Model Registration] First and second annular protrusions are provided in the circumferential direction of the inner surface of the valve body to divide the inside of the valve body into a hot water chamber, a water chamber, and a hot water chamber. A cylindrical body having an opening for hot water, an opening for water, and an opening for hot water is fitted inside the strip, and is disposed inside the first annular protrusion and movable in the axial direction of the valve body. A control valve body is fitted into the control valve body, and a sensing element is fitted into the valve body so as to be movable in the axial direction of the valve body while coming into contact with one end surface of the control valve body to sense hot water flowing in from the control valve body side. a hot body; a flow rate adjustment body that abuts the other end surface of the control valve body and positions the control valve body with respect to the first annular protrusion by a flow rate adjustment knob provided at the other end of the valve body; a first spring disposed on one end of the hot body and adjusting the elastic force against the temperature sensing body by a temperature adjustment knob provided at one end of the valve body; and a first spring between the control valve body and the flow rate adjustment body. a second spring that is interposed in the control valve body and whose elastic force against the control valve body is adjusted by the flow rate adjustment knob, and the control valve body is integrally molded from a fluororesin. A hot water bath characterized in that the hot water and water in the hot water chamber and the water chamber are mixed around the temperature sensing element and then led out into the hot water chamber. Mixed faucet.