JPH0972440A - Hot and cold water combination faucet with branched spout - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set the suitable temperature for mixed water for users by introducing water and hot water from a water supply passage and a hot water supply passage respectively into a branched mixing part before the mixing part of a combination faucet, and controlling the mixing of the water and hot water to send a mixed water to users. SOLUTION: In a body 1 of a combination faucet, to which a water supply pipe 2a and a hot water supply pipe 2b are connected, a mixing part 50 for discharging mixed water from the main body 1 is provided, and a branched mixing part 51, to which passages respectively branched from the water supply passage and the hot water supply passage leading to the mixing part 51 are connected, is incorporated. Besides, a mixed water supply passage 52 for sending mixed water to, for example, an automatic dishwasher, etc., arranged separately from the main body 1 is connected to the downstream of the branched mixing part 51, and the mixed water is supplied to the mixed water supply passage 52 by opening the passage of the branched mixing part 51. Consequently, when a mixing ratio of water and hot water is set suitably in the branched mixing part 51, a mixed water with the temperatures best suited to dishwashing can be obtained, regardless of the discharge temperature of the mixed water from the main body 1 of the combination faucet.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot and cold water mixing tap, and more particularly to a hot and cold water mixing tap with a branching port that can be suitably used for supplying water to hot water purifiers and auxiliary equipment such as automatic dishwashers.

[0002]

2. Description of the Related Art Generally, a hot and cold water mixing tap provided in a kitchen sink is mainly used for washing dishes by discharging water to a sink. On the other hand, for example, in the case of attaching a separate type water purifier, the water supply channel is branched from the main body of the hot and cold water mixing tap to supply water to this water purifier and discharge it from this water purifier as it is, or the treated water is supplied to the main body. It becomes equipment to discharge after returning. Even when an automatic dishwasher is provided, a pipe for supplying water or hot water branched from the body of the hot and cold water mixing tap is provided between the automatic dishwasher and the automatic dishwasher.

As a hot and cold water mixing valve for branching a flow path to a water purifier, there is, for example, the one described in Japanese Utility Model Laid-Open No. 63-66676. This is provided with branch ports at the lower end side of the body of the hot and cold water mixing tap, where the water supply pipe and the hot water supply pipe are connected, and connect one of these branch ports to the water purifier with a hose and connect the other branch port. It is designed to be closed by a plug.

With a hot and cold water mixing tap having such a branch port, water or hot water can be sent to the water purifier upstream of the built-in mixing valve mechanism, so that the water is not only discharged to the sink but also purified water. Water or hot water can also be supplied to the vessel, and the function of the hot and cold water mixing tap can be expanded. Even in a facility including an automatic dishwasher instead of the water purifier, water or hot water can be similarly supplied to the automatic dishwasher.

[0005]

However, in the one disclosed in the above publication, the water and hot water before the water and hot water are mixed are operated at their respective water supply temperatures and hot water supply temperatures. Since it is sent to a water purifier or an automatic dishwasher without using it, there are the following problems especially in the equipment accompanied by an automatic dishwasher.

In the case where the automatic dishwasher is supplied with water from the branch port on the water supply side, only low-temperature water can be supplied for dishwashing. For this reason, it is said that it is preferable to use hot water rather than water for cooking oil, fat, etc. adhering to dishes, for example, a heater should be provided on the dishwasher side to heat water to obtain this appropriate temperature. Is required. Therefore, even if the water is diverged from the hot and cold water mixing tap, it takes time to heat the hot water to an appropriate temperature, and it takes time to start dish washing by the automatic dish washing machine.

On the other hand, when the water supply path to the automatic dishwasher is connected to the branch opening on the hot water supply side, since hot water is supplied, heating by a heater unlike when connected to the water supply side is unnecessary, and cleaning is performed. There is no delay in starting.

However, the hot water supply temperature to the hot and cold water mixing tap is often 60 degrees Celsius or higher, and when such hot water is sent to the dishwasher, its original cleaning function is impaired. That is, when the protein attached to the tableware is exposed to high-temperature hot water, it is likely to adhere to the tableware, and the adhering amount cannot be removed only by the washing power of the automatic dishwasher, resulting in a decrease in the washing effect.

In order to eliminate the effect on the cleaning due to the supply of high temperature hot water, for example, when a hot water supply device is provided for supplying hot water to the hot and cold water mixing tap, the hot water supply device sets the temperature of the hot water supply to the low temperature side. You can deal with it. However,
Since the hot water supply temperature to the hot and cold water mixer is set to the low temperature side, even if it is optimal for supplying hot water to the automatic dishwasher, the hot water temperature from the main body of the hot and cold water mixer will also decrease, making it easy to use. Can not be ignored. If the facility supplies hot water to the hot and cold water mixing taps such as the bathroom vanity and the bathroom, the hot and cold water mixing taps cause the same trouble.

As described above, simply providing the branch ports on each of the water side and the hot water side of the hot and cold water mixing tap to supply water or hot water to other equipment corresponds to the supply of hot water at an appropriate temperature according to the application. Even if it is not possible to solve this problem by setting the temperature by the water heater, it will affect the usability of other equipment such as hot and cold water mixing taps.

The problem to be solved in the present invention is to delay the operation start time of the separate equipment and its unique function in equipment for branching water or hot water from the hot and cold water mixing tap to supply it to the separate equipment such as a dishwasher. It is an object of the present invention to provide a hot and cold water mixing tap with a branch port that does not affect the usability of each facility even if the equipment has a plurality of hot and cold water mixing taps.

[0012]

SUMMARY OF THE INVENTION According to the present invention, a main body is a mixing portion which is connected to a water supply source and a hot water supply source and which sets a mixing ratio of water from the water supply source and the hot water supply source in a flow path to a water discharge end. A hot and cold water mixing plug that is provided in the inside of the mixing section and that branches the water supply path and the hot water supply path on the upstream side of the mixing section to lead to the outside from the branch port at the end of the flow path. In the middle of the road system and upstream of the branch port, a branching mixing section for mixing water and hot water from the water supply channel and the hot water supply channel is provided, and the mixing ratio of the water and hot water is provided in the branching mixing section. It is characterized by comprising a mixing control valve which can be set and operated.

In such a structure, the branch mixing unit is provided inside the branch mixing unit separate from the main body, and water and hot water from the water source and the hot water source are provided in the mixing unit and the branch mixing unit, respectively. The main body and the branching mixing unit can be connected to each other so that the supply path can be connected, and the branching port can be provided in either the main body or the branching mixing unit by communicating with the mixing control valve.

The mixing control valve of the diverging mixing section is provided with an automatic temperature control mechanism that changes the valve openings on the water side and the hot water side in response to the temperature of the mixed water passing therethrough and maintains the mixed water temperature at the set temperature. It may be good. In this case, the automatic temperature control mechanism
A shape memory element capable of responding to the temperature of the mixed water can be used as a driving body for the valve body of the mixing control valve.

Further, a water stopcock which can open and close the branch port can be provided downstream of the mixing valve of the branching mixing section. In this case, the branch port is opened in two directions as the end of the auxiliary flow passage that penetrates the main body or a part of the branch mixing unit in the left-right width direction, and the auxiliary flow passage is communicated with the flow passage on the mixing control valve side. At the same time, a water stopcock may be selectively attached to one of the branch ports and the other branch port may be opened and closed by the water stopcock.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Water and hot water are introduced into a branch mixing section from a water supply channel and a hot water supply channel before going to the mixing section of a hot and cold water mixing tap, and a mixing control valve of the branch mixing section is used to control the The temperature of the mixed water is set, and the mixed water is sent to a supply destination such as an automatic dishwasher. Therefore, it is possible to set the temperature of the mixed water to the supply destination irrespective of the discharge temperature from the hot and cold water mixing tap, and it is necessary to adjust the temperature of the hot water on the hot water supply source side so that it becomes an appropriate temperature for the supply destination. Also disappears.

In the case where the branch mixing unit is provided in the branch mixing unit, the hot water and hot water supply passages of the existing hot and cold water mixing taps are connected to the water discharge end and the supply destination of the hot and cold water mixing tap itself. It can be connected to the branch port side and can be installed by reforming the existing hot and cold water mixing tap.

In the case where the mixing control valve is provided with an automatic temperature adjusting mechanism, the mixed water of the set temperature can be stably supplied to the equipment such as the automatic dishwasher even when the water supply and the hot water supply pressure fluctuate. A mixed water having a temperature adapted to is obtained.

In a device including a shape memory element as an element of the automatic temperature control mechanism, the element can be made small in size by using a shape memory alloy spring or the like, and the mixing control valve can be miniaturized. Becomes

In the case where a water shutoff valve for opening and closing the branch port is provided downstream of the mixing control valve, this mixing control valve does not need to have a water shutoff function, and therefore the size can be further reduced.
And, in the one in which both ends of the auxiliary flow path are used as branch openings and a water stopcock is provided in one of the branch openings, the branch openings can be positioned so as to face the left or right side of the hot and cold water mixing tap, and equipment such as an automatic dishwasher. It is possible to connect the pipes according to the positional relationship.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic diagram showing a water supply system, a hot water supply system, and a mixed water flow system in a hot and cold water mixing tap with a branching port according to the present invention.

FIG. 1A shows a water supply pipe 2a and a hot water supply pipe 2
The main body 1 of the hot and cold water mixing plug to which b is connected is provided with the mixing section 50 for discharging the mixed water from the main body 1, and the flow path is branched from the water supply channel and the hot water supply channel toward the mixing section 50. This is an example in which a branching mixing section 51 is incorporated in the path. The main body 1 is provided downstream of the branching mixing section 51.
A mixed water supply passage 52 for sending the mixed water to, for example, an automatic dishwasher or the like arranged separately from the above is connected, and the mixed water supply passage 52 is opened by opening the flow passage of the branch mixing unit 51.
Is mixed with water.

On the other hand, FIG. 1B shows a branching mixing section 51 with respect to the main body 1 of the hot and cold water mixing valve incorporating the mixing section 50.
It is an example in which a separate mixing unit 4 for branching having the above is combined to form a flow path. Even in this case, the mixed water of which the temperature is set in the main body 1 of the hot and cold water mixing tap is supplied to the automatic dishwasher from the mixed water supply passage 52 connected to the branch mixing unit 51.

In such a water and hot water supply system, the water and hot water supplied to the main body 1 of the hot and cold water mixing tap are mixed into the automatic dishwasher from the branch mixing section 51 which is a separate system from the mixing section 50. Is supplied. Therefore, if the mixing ratio of water and hot water is appropriately set in the branch mixing unit 51, the mixed water having the optimum temperature for dishwashing is obtained regardless of the discharge temperature of the mixed water from the body 1 of the hot and cold water mixing tap. be able to. In addition, hot water supply pipe 2
Even if a water heater (not shown) is connected to a, no operation such as changing the temperature of the hot water from this water heater is necessary, and a plurality of other hot and cold water mixing taps are connected to the water heater. Even equipment does not affect the operation of these hot and cold water mixing taps.

The hot and cold water mixing tap with a branching port of the present invention has the above-mentioned system of water supply, hot water supply, and mixed water flow, and its concrete configuration examples are shown in FIG. 2 and subsequent figures.

FIG. 2 is a left side vertical sectional view of a hot and cold water mixing valve with a branching opening according to the present invention.

The illustrated example is a single lever type hot and cold water mixing tap having a lever 1a at the upper end of a main body 1, and a valve unit 3 for mixing water and hot water from the water supply pipe 2a and the hot water supply pipe 2b is shown in FIG. The water discharge pipe 1b which is incorporated as the mixing section 50 shown in FIG. 1 and communicates with the downstream of the valve unit 3 is projected to the outside of the main body 1. As for the mixed water supply system up to the water discharge pipe 1b, the one in which the temperature of the mixed water is set by adjusting the flow rate by the valve unit 3 and adjusting the amount ratio of water and hot water is supplied to the water discharge pipe 1b as in the conventional system. To be done. Below the valve unit 3, water and hot water from the water supply pipe 2a and the hot water supply pipe 2b are supplied to the valve unit 3.
Side branching mixing unit 4 that branches into the supply path
Is provided as the branching mixing section 51 shown in FIG.

In the embodiment, the branching mixing unit 4 is used.
The existing hot and cold water mixing tap not equipped with is reformed so that it can be used as a hot and cold water mixing tap with a branch port. Fig. 3 shows an outline of this reforming.

The main body 1 of the existing hot and cold water mixing valve is shown in FIG.
As shown in (b) and (b), the main body 1 and a cover 1c connected to the upper end thereof are provided, and the valve unit 3 is incorporated in the cover 1c as a cartridge type. The cover 1c and the valve unit 3 can be disassembled with respect to the main body 1, and as shown in (c) of the figure, the branching mixing unit 4 is connected to the main body 1 to connect the branching mixing unit 4 with the main body 1. By incorporating the valve unit 3 at the upper end and connecting the flow paths between them, the branching mixing unit 4 shown in FIG. 2 can be reformed into a hot and cold water mixing plug newly installed.

Returning to FIG. 2, the valve unit 3 is a conventionally well-known sliding valve mechanism in which a movable valve plate 3b is superposed on a built-in fixed valve plate 3a and the movable valve plate 3b is used as a lever. It is connected to 1a. Then, the degree of alignment and non-alignment of the flow path holes formed in each of the fixed and movable valve plates 3a and 3b can be adjusted by the vertical and horizontal turning motions of the lever 1a, and the water discharge pipe 1b.
The flow rate and temperature of the mixed water toward the side can be set.

The branching mixing unit 4 is separate from the main body 1 as described above, and its details are shown in FIGS. 4 to 8.

FIG. 4 is a front vertical sectional view of the branching mixing unit 4, FIG. 5 is a bottom view thereof, FIG. 6A is a plan view, and FIG. 6B is A-A in FIG. 7 is a vertical sectional view taken along the line arrow, FIG. 7A is a horizontal sectional view taken along the line BB of FIG.
(B) is a longitudinal sectional view taken along the line CC in FIG.
8A and 8B are respectively D- of FIG. 7B.
It is a cross-sectional view taken along line D and line EE.

As shown in FIG. 5, the branching mixing unit 4 is provided with a water supply port 4a and a hot water supply port 4b for connecting the water supply pipe 2a and the hot water supply pipe 2b to the lower end of the housing, and the upper end surface of FIG. ), A water supply communication port 4c and a hot water supply communication port 4d that communicate with the valve unit 3 side are provided. The water supply port 4a and the water supply communication port 4c communicate with the water supply channel 4f in the housing, the hot water supply port 4b and the hot water supply communication port 4d communicate with the hot water supply channel 4g, and the mixed water channel which is cut off from the water supply channel 4f and the hot water supply channel 4g. 4h is formed. This mixing channel 4h
The flow path to the water discharge pipe 1b is connected via the valve unit 3, and a mixed water return port 4i communicating with the valve unit 3 is opened at the upper end thereof as shown in FIG. 6 (b). The lower end is provided with a mixed water outlet 4j that communicates with the water discharge pipe 1b through a flow path in the main body 1.

Further, inside the branching mixing unit 4,
A mixing control valve 5 is provided for branching water and hot water from the water supply port 4a and the hot water supply port 4b from the flow path to the valve unit 3 side and changing the mixing ratio of water and hot water. This mixing control valve 5 is, as shown in FIG. 7B and FIG. 8A,
It is housed in a chamber 4k having a circular opening cross section formed in the housing of the branching mixing unit 4. The chamber 4k is provided with a water inlet 4m and a hot water inlet 4n which communicate with the water supply passage 4f and the hot water supply passage 4g, respectively, on its peripheral wall.
As shown in FIG. 8, it is connected to the connecting path 4p extending in the back direction on the right end side of the housing. The communication path 4p communicates with the auxiliary flow path 4q having a circular opening cross section formed by penetrating in the width direction at the back of the housing. As shown in FIG. 8B, the auxiliary flow path 4q has an axial length that opens to the left and right ends of the housing, and female screws 4r and 4s are formed so as to be symmetrical in the figure. .

As shown in FIG. 4, the mixing control valve 5 is provided with a valve body 5b which moves in the axial direction in a cartridge type casing 5a inserted into a chamber 4k, which are watertightly shut off from each other. By changing the position of the valve body 5b with respect to the water valve seat 5c and the hot water valve seat 5d facing the water inlet 4m and the hot water inlet 4n, the mixing ratio of water and hot water can be set.

The valve body 5b is connected to a temperature setting handle 6 provided outside the diverging mixing unit 4, and is maintained at the temperature value set by the temperature setting handle 6 even when the supply pressure of hot water and water changes. As described above, an automatic temperature control function is provided between the water valve seat 5c and the valve seat 5d. As shown in the figure, this automatic temperature adjusting function is performed by a bias spring 5e interposed between the temperature setting handle 6 and the valve body 5b.
A spring 5f made of a shape memory alloy, which is located on the water inlet 4m side and biases the valve body 5b toward the hot water valve seat 5d side, is a constituent element thereof. The spring 5f is deformed by the temperature of the mixed water flowing through the casing 5a to the communication path 4p side, and when the temperature of the mixed water rises, the spring 5f extends to move the valve body 5b to the toilet seat 5d side, whereby the hot water side Reduce the valve opening to lower the temperature of the mixed water. Therefore, even if the supply pressure and the flow rate on the water side and the hot water side change, the temperature of the mixed water flowing from the communication path 4p to the auxiliary flow path 4q can be maintained at the temperature set by the temperature setting handle 6.

The auxiliary flow passage 4q connects the flow passage to an automatic dishwasher which is arranged separately from the body 1 of the hot and cold water mixing tap, and as shown in FIG. A socket 8 for connecting a hose 7 as a mixed water supply path is screwed into a female screw 4s, and a water stop plug 9 is connected to the left end using a female screw 4r. The water stop plug 9 includes a sleeve 9a screwed to the female screw 4r and a spindle 9b screwed therein, and a packing 9c is provided at the tip of the spindle 9b.
Then, in the state of FIG. 8B, the packing 9c is located away from the end face of the socket 8, and therefore the mixed water from the casing 5a of the mixing control valve 5 via the communication path 4p flows from the auxiliary flow path 4q to the socket. Pass 8 to be fed to an automatic dishwasher. When the spindle 9b is rotated and moved to the right, the packing 9c abuts the end surface of the socket 8 to close the flow path to the downstream side, and the mixed water is not discharged from the socket 8.

Since the female screws 4r and 4s of the auxiliary flow path 4q are formed so as to be bilaterally symmetrical to each other, the socket 8 and the water stop plug 9 can be replaced with each other. Therefore, if the automatic dishwasher is arranged on the right side of the main body 1 of the hot and cold water mixing tap, the socket 8 and the water stopcock 9 shown in FIG. 8B are arranged, and if the automatic dishwasher is arranged on the left side. Replacing the socket 8 and the water stop plug 9 facilitates connection of the hose 7.

In the above construction, when the mixed water of the supplied water and hot water is used as the discharge only from the water discharge pipe 1b, the spindle 9b of the water stopcock 9 should be moved to the right side in FIG. 8 (b). If operated, there is no mixed water sent out from the branching mixing unit 4 through the socket 8. Therefore, even in equipment without an automatic dishwasher, water purifier, etc., it can be used as it is as a normal hot and cold water mixing tap.

If the automatic dishwasher is operated and the flow path is opened while the water stopcock 9 is open, water and hot water from the water supply pipe 2a and the hot water supply pipe 2b flow to the discharge pipe 1b side. Irrespective of the operation of the valve unit 3 that opens and closes the flow path of
Mixed water is supplied from the branching mixing unit 4 to the hose 7 side. That is, the water from the water supply pipe 2a enters the water supply passage 4f from the water supply port 4a and flows into the casing 5a from the water inlet 4m, and at the same time, the hot water from the hot water supply pipe 2b enters the hot water supply passage 4g from the hot water supply port 4b. It flows into the casing 5a from the inlet 4n. And the supplied hot water is the valve hole 5 of the valve body 5b.
It flows into the water valve seat 5c side from b-1 and is mixed with water, and this mixed water flows into the auxiliary flow path 4q through the communication path 4p and is sent from the hose 7 to the automatic dishwasher.

In this way, water and hot water from the water supply pipe 2a and the hot water supply pipe 2b pass through the water supply passage 4f and the hot water supply passage 4g of the branching mixing unit 4 and are supplied to the valve unit 3 as they are. It is separated from those supplied to the chamber 4k from the water inlet 4m and the hot water inlet 4n. What is supplied to the valve unit 3 is supplied as mixed water from the water discharge pipe 1b by setting the flow rate and temperature by operating the lever 1a, and what is supplied to the chamber 4k is the mixing control valve 5 as described above. Sent to the automatic dishwasher via.

Since the temperature of the mixed water to the automatic dishwasher is adjusted independently of the valve unit 3 by the temperature setting handle 6 of the mixing control valve 5, it is suitable for dishwashing regardless of the hot water supply temperature from the hot water supply pipe 2b. It can be supplied as mixed water at temperature. Therefore, even when the hot water supply pipe 2b is used as a hot water supply source, it is not necessary to adjust the hot water supply temperature from the hot water supply device to a temperature suitable for washing dishes. Therefore,
There is no restriction on the setting range of the temperature of the mixed water from the water discharge pipe 1b, and the hot water supply temperature to the other plurality of hot and cold water mixing taps provided in the bathroom, the vanity, etc. can be properly maintained.

Further, since the flow path to the automatic dishwasher side can be opened / closed by operating the water stop cock 9, the mixing control valve 5 arranged upstream of the water stop cock 9 does not need a water stop function and the temperature can be controlled. It suffices to have a structure for adjustment only. Therefore, even if the mixing control valve 5 is equipped with an automatic temperature control function, the bulkiness does not increase, and the maintenance and inspection of the mixing control valve 5 itself becomes easy. Further, the automatic temperature control function of the mixing control valve 5 is performed by utilizing the deformation of the spring 5f made of a shape memory alloy, and by arranging the spring 5f so as to match the stroke direction of the valve body 5b, the spring Since the deformation amount of 5f can be directly converted to the position setting of the valve body 5b, the mixing control valve 5 can be further downsized. Therefore, installation by reforming in which the branching mixing unit 4 including the mixing control valve 5 is assembled by being combined with the valve unit 3 of the existing hot and cold water mixing tap can be sufficiently dealt with.

As a means for opening and closing the flow path to the automatic dishwasher side, in addition to the water stopcock 9 as shown in the embodiment,
An on-off valve that can be operated from outside the housing of the branch mixing unit 4 may be used.

FIG. 9 is another example and is a schematic perspective view of the hot and cold water mixing tap as seen from the diagonally left back side.

In this example, a valve unit 11 having the same function as the valve unit 3 used in the hot and cold water mixing tap shown above is incorporated in the main body 10, and the water supply pipe 12 is provided.
By connecting a and the hot water supply pipe 12b to the valve unit 11, the mixed water can be discharged from the water discharge pipe 10b by operating the lever 10a.

Further, the water supply pipe 12a and the hot water supply pipe 12b are respectively provided with a branch water supply pipe 12c and a branch hot water supply pipe 12d branching to the back side in front of the valve unit 11, and of a manually operated type downstream of these branch flow paths. A mixing valve 13 is provided.
The mixing valve 13 is provided with a valve mechanism operably connected to a handle 13a protruding to the left side of the main body 10 on one axis so as to stop water and to simultaneously set water and the opening degree on the hot water side.
3, the mixing ratio of water and hot water from the branch water supply pipe 12c and the branch hot water supply pipe 12d can be set. Then, on the downstream side of this valve mechanism, an auxiliary flow passage 14 similar to the auxiliary flow passage 4q in the previous example is provided to connect the flow passages.

The auxiliary flow path 14 and the water stopcock, socket, etc. incorporated therein are the same as those shown in FIG. 8B in the previous example, and the socket 8 for connecting the hose 7 is used.
Is attached to one end surface side of the main body 10, and the other end surface side is provided with a water stopcock 9 having a spindle 9b equipped with a packing 9c and rotatably passed through a sleeve 9a.

In such a structure, if the mixing valve 13 is set at the water stop position, the water supply pipe 12a and the hot water supply pipe 12
The water and hot water from b are supplied to the valve unit 11, and the mixed water is discharged from the water discharge pipe 10b by the operation of the lever 10a, and it can be used as it is as a normal hot and cold water mixing tap.

When an automatic dishwasher is connected to the hose 7, the mixing valve 13 is operated by operating the handle 13a, and the branch water supply pipe 12c and the branch hot water supply pipe 12d are operated.
Water and the opening on the hot water side to set the mixed water to the auxiliary flow path 1
4 Then, if the stopcock 9 is opened, the mixed water is supplied to the automatic dishwasher from the auxiliary flow path 14, and the mixed water is sent to the automatic dishwasher regardless of whether the mixed water is discharged from the water discharge pipe 10b or stopped. Since the temperature of the mixed water can be set independently of the temperature setting by the valve unit 11 by operating the mixing valve 13, the mixed water having a temperature suitable for dishwashing can be supplied.

In the example of FIG. 9, the mixing valve 13 can be uniaxially operated by one handle 13a, but valve bodies are provided in the water supply passages and the hot water supply passages from the branch water supply pipe 12c and the branch hot water supply pipe 12d, respectively. A mixing valve of a type in which two handles for incorporating and operating these valve bodies are provided outside the main body 10 may be used.

[0052]

The present invention has the following effects due to its configuration.

(1) It is possible to set the temperature of the mixed water to the supply destination such as an automatic dishwasher regardless of the discharge temperature from the discharge end of the hot and cold water mixing tap itself. Mixed water having different temperatures can be obtained. Also, since it is not necessary to adjust the temperature of the hot water on the hot water source side to match the temperature required by the destination, even in a facility that supplies hot water to multiple hot and cold water mixers or showers from a single hot water source,
There is no limit to the hot water supply temperature of each facility.

(2) When the branch mixing unit is provided in the branch mixing unit, the existing hot and cold water mixing tap can be reformed and installed, so that versatility can be expanded.

(3) If the mixing control valve is provided with an automatic temperature control mechanism, mixed water having a set temperature can be obtained even when the water supply and the hot water supply pressure fluctuate. For example, it is branched to an automatic dishwasher or the like. With such equipment, the washing capacity can be maintained high by setting the temperature of the mixed water suitable for washing dishes.

(4) In a device including a shape memory element as an element of the automatic temperature control mechanism, since the mixing control valve can be downsized, the bulk of the hot and cold water mixing stopper can be suppressed, and its installation place is restricted. Nor.

(5) In the case where the water shutoff valve for opening and closing the branch port is provided downstream of the mixing control valve, the mixing control valve does not need to have a water shutting function, so that the size can be further reduced.

(6) In the case where both ends of the auxiliary flow path are used as branch openings and a water stop plug is provided on one of the branch openings, by aligning the branch openings with the position of the auxiliary equipment, the piping between them can be simplified. Also improves

[Brief description of drawings]

FIG. 1 is a schematic view showing a flow system of water and hot water of a hot and cold water mixing tap with a branching port according to the present invention, in which FIG. 1 (a) shows a branching mixing unit integrated with a main body of the hot and cold water mixing tap. In the case of providing, (b) of the figure shows the case where the branching mixing part is provided separately.

FIG. 2 is a left side vertical sectional view showing a main part of the hot and cold water mixing valve of the present invention.

FIG. 3 is a view showing a procedure for reforming an existing hot and cold water mixing tap to obtain a hot and cold water mixing tap with a branch port, in which (a) is a perspective view of the existing hot and cold water mixing tap, and FIG. (b) is a state in which the cover is removed from the existing hot and cold water mixing valve, and (c) of the same figure is a view showing an assembly for incorporating the branching mixing unit between the main body and the valve unit for reforming.

FIG. 4 is a front vertical cross-sectional view showing a main part of a branching mixing unit.

FIG. 5 is a bottom view of the branching mixing unit.

6A and 6B are details of the branching mixing unit, wherein FIG. 6A is a plan view thereof, and FIG. 6B is A- of FIG.
It is a longitudinal cross-sectional view taken along the line A.

7 is a detail of the mixing unit for branching, FIG. 7 (a) is a cross-sectional view taken along the line BB of FIG. 4, and FIG. 7 (b) is C- of FIG. 7 (a). It is a longitudinal cross-sectional view sectional drawing by the C line arrow.

FIG. 8 is a detail of the branching mixing unit, and FIGS. 8A and 8B are transverse cross-sectional views taken along the lines DD and EE of FIG. 7B, respectively. .

FIG. 9 is a schematic perspective view showing another example including a uniaxially operated mixing valve.

[Explanation of symbols]

 1: Main body 2a: Water supply pipe 2b: Hot water supply pipe 3: Valve unit (mixing unit) 4: Mixing unit for branching (mixing unit for branching) 4f: Water supply passage 4g: Hot water supply passage 4h: Mixing water passage 4k: Chamber 4m: Water inlet 4n: Hot water inlet 4p: Communication path 4q: Auxiliary flow path 5: Mixing control valve 5a: Casing 5b: Valve body 5c: Water valve seat 5d: Hot water valve seat 5e: Bias spring 5f: Spring 6: Temperature setting handle 7: Hose 8: Socket 9: Water stopper 10: Main body 11: Valve unit 12a: Water supply pipe 12b: Hot water supply pipe 12c: Branch water supply pipe 12d: Branch hot water supply pipe 13: Mixing valve 13a: Handle 14: Auxiliary flow path

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshinobu Uchimura 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu City Tokoki Co., Ltd. (72) Eriko Abe 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu No. 1 in Totoki Co., Ltd.

Claims (6)

[Claims] 1. A mixing section, which is connected to a water supply source and a hot water supply source and which sets a mixing ratio of water from the water supply source and the hot water supply source and a hot water in a flow path to a water discharge end, is provided inside the main body. A hot and cold water mixing tap that is a flow path system that branches a water supply path and a hot water supply path on the upstream side from the branch port at the end of the flow path to the outside, and is in the middle of the flow path system that is guided to the outside. A branching mixing section for mixing water and hot water from the water supply path and the hot water supply path is provided upstream of the branch port, and a mixing control valve capable of setting and operating a mixing ratio of the water and hot water is provided in the branching mixing section. A hot and cold water mixing tap with a branch port. 2. The branch mixing unit is provided inside a branch mixing unit separate from the main body, and water and hot water from the water supply source and the hot water supply source are provided in the mixing unit and the branch mixing unit, respectively. 2. The main body and the branching mixing unit are connected to each other so as to be connectable to each other, and the branching port is provided in either the main body or the branching mixing unit by communicating with the mixing control valve. A hot and cold water mixing tap with a branch. 3. An automatic temperature control in which the mixing control valve of the branch mixing unit changes the valve openings of the water side and the hot water side in response to the temperature of the mixed water passing therethrough and maintains the mixed water temperature at a set temperature. The hot and cold water mixing tap with a branch opening according to claim 1 or 2, comprising a mechanism. 4. The hot and cold water mixing tap with a branch port according to claim 3, wherein the automatic temperature control mechanism comprises a shape memory element capable of responding to the temperature of the mixed water as a driver of the valve body of the mixing control valve. 5. A water stopcock that can open and close the branch port is provided downstream of the mixing valve of the branch mixing section.
4. A hot and cold water mixing tap with a branch mouth according to 4). 6. The branch port is opened in two directions as an end portion of an auxiliary flow passage that penetrates the main body or a part of the branching mixing unit in the left-right width direction, and the auxiliary flow passage is provided on the mixing control valve side. 6. The hot water with a branch port according to claim 5, wherein the hot plug is selectively attached to one of the branch ports and the other branch port can be opened and closed by the water plug while communicating with the flow channel of Mixing tap.