JP4598488B2 - Hot and cold water faucet with temperature display - Google Patents

Description

  The present invention relates to a hot and cold water mixing faucet with a temperature display for displaying the temperature of discharged water.

In general, in the case of a hot and cold water faucet, the temperature of the water discharge set by the operation of the temperature control handle is displayed on the display unit provided around the temperature control handle, and the user can know the temperature of the water discharge by the display. Yes.
However, the temperature display based on the position of the temperature control handle cannot accurately represent the temperature of water discharged from the water outlet.

Accordingly, there has been proposed a system in which the temperature of temperature-controlled water guided to the water outlet is detected by a temperature detection element such as a thermistor and displayed on a temperature display unit.
In this kind of hot and cold water mixing faucet with temperature display, if a temperature detection element is provided near the water outlet, the temperature of the water discharge (temperature-controlled water temperature) is detected near the water outlet and displayed on the temperature display section. Because there is a time delay between the temperature detection by the temperature display and the display on the temperature display section, when the temperature display section displays, the temperature-controlled water that has already been detected is already discharged from the outlet, and the temperature display section This causes a problem that the temperature indicated by the above and the actual water discharge temperature do not match.

  For example, the following Patent Document 1 discloses a hot and cold water mixing faucet provided with a temperature display unit and a temperature detection element. FIG. 22 shows a specific example thereof, but here a temperature detection element (thermistor) 200 is shown. Are provided in the vicinity of the end of the flexible hose 202 and the water discharge head 204. In this case, the temperature detection element 200 and the water discharge port 206 are close to each other, which may cause the above-described problem.

In addition, it is not actually easy to attach the temperature detecting element 200 to the flexible hose 202 in this way, and the flexible hose 200 is pulled out from the holder 208 together with the water discharge head 204 or stored in the original. Therefore, the temperature detecting element 200 and the electric wiring connected thereto are forced to move each time, and are liable to cause a failure with repeated movement, and there remains a problem in terms of reliability.
Reference numeral 210 denotes an LED warning light that issues a warning to the user when the temperature detected by the temperature detection element 200 is a certain high temperature or higher.

As solutions for the former problem, that is, the problem of mismatch between the temperature detected by the temperature detection element and the actual water discharge temperature from the water discharge port, the water sent through the water supply pipe 212 and the hot water supply pipe 214 respectively. The temperature control water outflow pipe 218 from the mixing unit 216 that mixes and adjusts the temperature of the water and hot water is divided into two in the tube axis direction, and a temperature detecting element is attached to the divided portion in an embedded state, and each divided body It is conceivable to braze and join.
In this case, since the temperature detecting element is located far from the water outlet, the water detected at the temperature detected by the temperature detecting element, that is, the temperature displayed on the temperature display unit can be discharged from the water outlet 206 correctly. .
However, even in this case, there remains a problem that the mounting of the temperature detecting element becomes extremely troublesome and difficult.

JP 2001-146774 A

  The present invention is based on the circumstances as described above, and the temperature detection element can be easily attached, and the temperature detected by the temperature detection element can coincide with the temperature of the water discharged from the actual water outlet. The purpose is to provide a mixing faucet.

Thus, according to the first aspect of the present invention, there is provided (a) a water supply pipe, (b) a hot water supply pipe, and (c) hot water that mixes water and hot water sent through the water supply pipe and the hot water supply pipe to control the temperature. A mixing section, (d) an outflow pipe for flowing out the temperature-controlled water from the mixing section, (e) a flexible hose for guiding the temperature-controlled water to the water outlet, and (f) the temperature of the temperature-controlled water In the hot water and water mixing faucet with temperature display, comprising: a temperature detection element for detecting temperature; and (g) a temperature display section for displaying temperature based on detection by the temperature detection element. DOO thereby connected to each other by a connection device, Rutotomoni mounting the temperature sensing element in a state facing the flow path of the temperature control water inside the connecting device to the coupling device, the temperature display unit, said spout A rear end surface of the water discharge head that can be pulled out together with the flexible hose, and holds the water discharge head in the storage position. It is provided on the side of the water discharge pipe main body at a position sandwiched between the front end surface of the water discharge pipe main body as a holder .

Effects and effects of the invention

As described above, the present invention connects the temperature control water outlet pipe and the flexible hose to each other by the connecting device, and connects the temperature detecting element so as to face the temperature adjusting water flow channel inside the connecting device. According to the present invention, the difficulty and difficulty of assembling the temperature detection element to the pipe, the flexible hose, or the faucet body can be eliminated.
Moreover, since the temperature detection element is located in the upstream part sufficiently away from the water outlet, the temperature of the temperature detected by the temperature detection element and displayed on the temperature display unit (temperature control water) is then discharged from the water outlet. Thus, the temperature of the water discharged displayed on the temperature display unit and the temperature of the water discharged from the actual water outlet can be correctly matched.

  Also, according to the present invention, the temperature detection element can be maintained in a fixed position by attaching the temperature detection element to a connecting device for connecting the outflow pipe and the flexible hose, and the temperature detection element and the electric wiring are moved. As a result, the problem that causes the failure can be solved.

Next, an embodiment in which the present invention is applied to a kitchen hose-accommodating automatic faucet (a hot and cold water faucet) will be described in detail with reference to the drawings.
In FIG. 1, 10 is a kitchen cabinet, 12 is a counter, and a water faucet main body 14 and a water discharge pipe 16 are provided in a state of standing on the counter 12. Here, the water discharge pipe 16 can be rotated by a predetermined angle with respect to the main body 14.
Further, the water discharge pipe 16 has an inverted U-shaped gooseneck shape as shown in FIG.
As shown in the figure, the water discharge pipe 16 has a water discharge port 18 at the tip, and functions as a water discharge head 22 that can be pulled out together with the flexible hose 20 and a holder that holds the water discharge head 22 in the storage position. The water discharge pipe main body 24 having

As shown in FIG. 1, a valve unit 26 is disposed inside the cabinet 10 at a position between the pair of stop cocks 28 and 30.
A water supply main pipe (hereinafter simply referred to as a water supply main pipe) is connected to a water stop cock 28, a branch joint 32, and a connection hose 34 with respect to a water inlet 92 (see FIG. 5A) described later of the valve unit 26. Connected through.
In addition, a hot water supply main pipe (hereinafter simply referred to as a hot water supply main pipe) is connected to a hot water inlet 94 (see FIG. 5A), which will be described later, via a water stop cock 30 and a connection hose 36.
A water supply pipe 38 and a hot water supply pipe 40 extend upward from the water outlet and the hot water outlet of the valve unit 26, and their tips are connected to the main body 14 of the water faucet. Water and hot water are supplied respectively.

The main body 14 incorporates a mixing valve 58 (see FIG. 2), which will be described later, and flows out water or hot water (temperature-controlled water after being mixed by the mixing valve 58) from the downstream portion of the mixing valve 58. A tube 42 extends downward, and its tip is connected to the flexible hose 20 via a coupler (connector) 44.
Here, the hose 20 extends upward from the coupler 44 and then rotates once before being inserted into the main body 14 and the water discharge pipe main body 24 and connected to the water discharge head 22.

A water purifier 46 is also provided inside the cabinet 10, and water from the water supply source pipe is guided to the water purifier 46 through the branch joint 32 and the hose 48 in the upstream portion of the valve unit 26.
The water purifier 46 purifies the tap water by passing it through a filter 66 (see FIG. 2) described later, and a hose 50 for allowing the purified water to flow out extends from the water purifier 46.
The tip of the hose 50 is connected to the hose 20 connected to the water discharge head 22 via a coupler 44.
That is, the purified water flowing out from the water purifier 46 is guided to the water discharge head 22 through the hoses 50 and 20 and discharged from the water discharge port 18 at the tip thereof.

  A controller (control unit) 52 for controlling the operation of the faucet is also provided inside the cabinet 10 below the valve unit 26.

As shown in FIG. 2, in this embodiment, water and hot water from the water supply main pipe and the hot water supply main pipe are supplied to the mixing valve 58 built in the main body 14 through the water supply path 54 and the hot water supply path 56.
The supplied water and hot water are mixed at a predetermined ratio based on the operation of the lever handle 60 and sent to the water discharge head 22 through the outflow passage 62 at a predetermined flow rate determined based on the operation of the lever handle 60. The water is discharged from the water outlet 18 at the tip.
Here, the lever handle 60 adjusts the mixing ratio of water and hot water, that is, adjusts the temperature by turning left and right, and adjusts the flow rate by turning up and down.

The water from the water supply main pipe is also taken out to the water purification path 64 branched from the water supply path 54 at the upstream portion of the electromagnetic valve 68 and passes through the filter 66 of the water purifier 46 provided on the water purification path 64 for purification there. In addition, the purified water (purified water) bypasses the mixing valve 58 and is guided to the outflow passage 62, and is discharged from the water outlet 18 of the water discharge head 22 through the outflow passage 62.
In each of the water supply path 54, the hot water supply path 56, and the water purification path 64, electromagnetic valves 68, 70, and 72 that open and close the flow path and a check valve 74 that prevents backflow are disposed.
A constant flow valve 73 is provided in the water purification path 64.

A bypass path 76 branches and extends from the water supply path 54 at an upstream portion of the electromagnetic valve 68, and a tip thereof is connected to the hot water supply path 56 and downstream portions of the electromagnetic valve 70 and the check valve 74.
An electromagnetic valve 78 and a check valve 74 for opening and closing the flow path are also provided on the bypass path 76.
These solenoid valves 68, 70, 72, 78 are electrically connected to the controller 52, and their operation is controlled by the controller 52.

In the present embodiment, the bypass path 76 that connects the water supply path 54 and the hot water supply path 56 is provided for the following reason.
That is, when the lever handle 60 is in a state where the hot water flow path in the mixing valve 58 is fully open and the water flow path is fully closed, the human body detection by the human body detection sensor (water sensor 116) described later is performed. This is not possible even if the water is discharged from the water outlet 18 based on the above.
Therefore, the water supply channel 54 and the hot water supply channel 56 are connected by the bypass channel 76, and even if the water channel is fully closed in the mixing valve 58, the water from the water supply source pipe is supplied to the bypass channel 76 and the hot water supply channel. 56, and further, supply to the spout 18 through the outflow passage 62 is possible.

In the automatic water faucet of this embodiment, the electromagnetic valves 68 and 78 are opened and the electromagnetic valves 70 and 72 are closed as shown in FIG. Water from the water supply source pipe is sent to the mixing valve 58 through a part of the hot water supply path 56, and further, water is discharged from the water outlet 18 through the outflow path 62 via the mixing valve 58 (water discharge).
Further, as shown in FIG. 16B, water from the water supply main pipe and hot water from the hot water supply main pipe are respectively supplied to the water supply channel under the condition that the electromagnetic valves 68 and 70 are open and the electromagnetic valves 72 and 78 are closed. 54 and the hot water supply path 56 are sent to the mixing valve 58 where they are mixed and made hot water (temperature-controlled water), and then the hot water is discharged from the water outlet 18 through the outflow path 62 (hot water discharge).
On the other hand, as shown in FIG. 16C, when all of the solenoid valves 68, 70 and 78 are closed and only the solenoid valve 72 is open, the water from the water supply source pipe is the water purifier 46, that is, The water is guided to the side of the water purification path 64, passes through the filter 66, becomes purified water, and is discharged from the water outlet 18 through the outflow path 62 (purified water discharge).

FIG. 7 specifically shows the configuration of the mixing valve 58.
As shown in the figure, the mixing valve 58 has a fixed valve body 82 and a movable valve body 84 that slides on the upper surface of the housing 80, and a lever for the movable valve body 84. A handle 60 is operatively connected.
The fixed valve body 82 is provided with water and hot water inlets 86, 86 through which the water and hot water sent through the water supply pipe 38 and the hot water supply pipe 40 upward are movable. It flows into the mixing chamber 88 of the valve body 84.
Then, the temperature-adjusted water or water after mixing in the mixing chamber 88 flows out from the outlet 89 to the outflow pipe 42 and is guided to the water outlet 18 through the outflow path 62 of FIG.

4 to 6 specifically show the configuration of the valve unit 26. FIG.
In these drawings, reference numeral 90 denotes a valve body, as shown in FIG. 5, a water inlet 92 and a hot water inlet 94, and an internal flow passage 54a communicating with them and forming a part of the water supply passage 54 and the hot water supply passage 56, 56a.
Electromagnetic valves 68 and 70 (see FIG. 6) are provided on the internal flow paths 54a and 56a.

In the valve body 90, as shown in FIG. 5C, a branch flow path 76a forming a part of the bypass path 76 is branched from the internal water supply flow path 54a, and this branch flow path 76a. An electromagnetic valve 78 (see FIG. 6) for opening and closing the bypass path 76 is provided above.
The valve body 90 is further provided with a joining flow passage 76b that forms the remainder of the bypass passage 76 for joining the branch passage 76a to the hot water supply passage 56 as shown in FIG. The water from the passage 76a is joined to the hot water supply passage 56 by the joint passage 76b, and then sent to the mixing valve 58 of FIG.

As shown in FIG. 6B, the electromagnetic valves 68, 70, and 78 are a diaphragm valve 98 as a main valve, a back pressure chamber 100 formed behind the diaphragm valve 98, and draining the back pressure chamber 100. A pilot water channel 102 as a drainage water channel to be performed, a plunger valve 104 as a pilot valve that opens and closes the pilot water channel 102, a fixed core 106, and a solenoid 108 that operates the plunger valve 104 with electromagnetic force.
In the electromagnetic valves 68, 70, 78, when the plunger valve 104 is opened by energizing the solenoid 108, the pilot water passage 102 is opened and the pressure in the back pressure chamber 100 is released, and the diaphragm valve 98 as the main valve is opened. Opens the valve.

As shown in FIGS. 4 (a) and 6 (a), the valve body 90 has a water drain plug 110 for draining water and hot water inside the valve body 90, and a diaphragm valve 98 is manually opened when draining water. An opening operation member 112 is provided.
The opening operation member 112 manually opens the diaphragm valve 98 by rotating the knob 114.

As shown in FIG. 3, the tip of the water discharge pipe main body 24 in the water discharge pipe 16 having an inverted U-shaped gooseneck shape, specifically, the upper surface of the upper part of the water discharge pipe main body 24 downward from the uppermost part. A water sensor (water human body detection sensor) 116 and a hot water sensor (hot water human body detection sensor) 118 are arranged in a line in the tube axis direction at a predetermined interval.
Here, the water sensor 116 is provided on the front side close to the user (on the front side), and the hot water sensor 118 is provided on the back side. Therefore, the water sensor 116 is positioned below the hot water sensor 118, and the hot water sensor 118 is positioned above the water sensor 116.
In the present embodiment, a water purification sensor (a human body detection sensor for water purification) 120 is also provided on the side surface of the water discharge pipe body 24.
A light irradiator 122 is provided on the lower surface of the distal end portion of the water discharge pipe main body 24 to irradiate the water or the sink or the container in the sink with light.

In the automatic water faucet of this embodiment, when a hand is held over the water sensor 116 and the water sensor 116 detects this, water is discharged from the water outlet 18 (water discharge). Further, when the hand is held over the water sensor 116 again under the water discharge state, the water discharge stops there. That is, the water is stopped.
On the other hand, when the hand is held over the hot water sensor 118, hot water (temperature-controlled water) whose temperature is adjusted to an appropriate temperature is discharged from the water outlet 18 based on the detection of the hand by the hot water sensor 118, and the hot water spout. If you hold your hand over the hot water sensor 118 again, the hot water discharge stops there.

On the other hand, as shown in FIG. 15, when a hand is put out to the side of the distal end portion of the water discharge pipe main body 24, the water purification sensor 120 detects this, and purified water is discharged from the water outlet 18 (purified water discharge). Further, when the hand is held again against the water purification sensor 120 under the state of water purging, the water purging is stopped there.
As such, the controller 52 controls the operation of the corresponding electromagnetic valves 68, 70, 72, 78.

Here, the detection distance of the water sensor 116 is set shorter than the detection distance of the hot water sensor 118 on the back side.
That is, assuming that each sensor (water sensor 116 and hot water sensor 118) detects the finger of the hand that has been inserted, here the detection distance of the water sensor 116 is about 2 cm, The detection distance is set to about 4 cm.

8 to 11 specifically show the internal structure of the water discharge pipe 16.
As shown in FIGS. 8, 9, and 10, the water discharge pipe body 24 is inserted into the metal pipe 124 with a U-shaped cross section and guides the hose 20 on the inner side. In FIG. 5, the curved inner member 126 that guides the electrical wiring that communicates the respective sensors 116, 118, and 120 for water, hot water, and purified water with the controller 52, and the hose 20 that is provided on the tip side thereof to guide the insertion of the hose 20. A substantially cylindrical guide member 128 and a guide cover 130 covering the guide member 128 from below are provided.

As shown in FIG. 11, a partition plate 131 is fixed to the upper surface of the guide member 128, and sensor units 132 and 134 having the water sensor 116 and the hot water sensor 118 on the upper surface of the partition plate 131. Is placed and fixed, and a resin-made translucent sensor cover 136 is covered from above.
A water purification sensor 120 is attached to the side surface of the guide member 128. A portion of the guide cover 130 corresponding to the water purification sensor 120 is translucent.

The hot water sensor 118 is of a photoelectric type, and as shown in FIG. 12A, the sensor unit 134 having the hot water sensor 118 has a substrate 140, and an infrared light emitting element is provided there. 142, a light receiving element 144, and a microcomputer 146 as a sensor control unit are mounted.
The board 140 is also equipped with an LED 148 for displaying whether or not the hot water discharge state is present. The LED 148 blinks under the hot water discharge state, and the LED 148 is lit and held otherwise. It has become.

On the other hand, as shown in FIG. 12B, the sensor unit 132 having the water sensor 116 displays whether or not the substrate 140 is in the infrared light emitting element 142, the light receiving element 144, and water spouting. LED 150 is mounted.
Here, the LED 150 blinks if the water is being sprinkled, and if not, the LED 150 is kept lit to display whether the water is being sprinkled.
The sensor unit 132 is also equipped with a three-color (RGB) LED 152 for displaying the current water discharge temperature on the substrate 140.

On the other hand, as shown in FIG. 12 (C), the sensor unit 138 having the water purification sensor 120 displays on the substrate 140 whether or not the infrared light emitting element 142, the light receiving element 144, and the purified water discharge are in the water. An LED 154 is mounted.
The LED 154 blinks in the clean water discharge, and if not, holds the lighting state to display whether or not the clean water discharge is in progress.

On the other hand, the water discharge head 22 has a cylindrical core member 156 and a cover 158 that covers the core member 156 from the outer peripheral side, as shown in FIG. Watertight connection is fixed.
At the tip of the water discharge head 22, there is provided a switching operation unit 160 for switching the water discharged from the water discharge port 18 from straight water discharge to shower water discharge or vice versa.

As shown in FIG. 1, the thermistor 170 is attached to the coupler 44 as a temperature detecting element that detects the temperature of water discharged from the water outlet 18 in advance upstream of the coupler 44 so as to face the internal flow path of the coupler 44. It has been.
As shown in FIGS. 8 and 9, a light temperature display unit 162 that displays the temperature of the water discharge or the temperature change thereof by the color of the light or the color change based on the temperature detection by the thermistor 170 is the tip of the water discharge pipe 24. In the vicinity of the surface, specifically, here, it is attached at a position sandwiched in the tube axis direction by the distal end surface of the water discharge pipe 24 and the water discharge head 22.

As shown in FIG. 14, the light temperature display portion 162 is made of a light-transmitting resin integrally having an annular and flat plate-like main body portion 172 and an extending portion 164 extending backward from the upper portion thereof. As shown in the partially enlarged view of FIG. 9, the light from the three-color LED 152 irradiates the lower surface of the extended portion 164, specifically, the irradiated surface 176 (see FIG. 14B). It has come to be.
The light temperature display portion 162 made of this translucent resin has the outer peripheral surface of the main body portion 172 as a display surface 178, and only the display surface 178 is exposed on the outer peripheral surface of the water discharge pipe 16 in the assembled state. The temperature of water discharge is displayed on the display surface 178 in the color of light.

  Specifically, the light emitted from the three-color LED 152 to the irradiated surface 176 of the extending portion 164 passes through the inside of the translucent resin and is radiated to the outside from the display surface 178 on the outer peripheral surface, depending on the color of the light. Displays the temperature of water discharge.

  And in order to radiate | emit light efficiently from the display surface 178, white paint is apply | coated to surfaces other than the to-be-irradiated surface 176 of the extension part 164, and the display surface 178 of an outer peripheral surface.

  As shown in FIG. 14, the light temperature display part 162 has a hooking claw 180 on the lower surface of the extension part 164 and a notch part 182 at the lower part of the main body part 172, as shown in FIG. The hooking claw 180 is elastically hooked to the upward hooking portion 184 provided on the guide member 128, and the engaging portion 186 provided on the guide cover 130 is further engaged with the lower notch portion 182. It is assembled to the water discharge pipe main body 24 so as to enter.

The three-color LED 152 is a unitized LED that develops the three primary colors red (Red), green (Green), and blue (Blue), and is continuously stepless based on temperature detection by the thermistor 170. Change the color of light.
The light temperature display unit 162 continuously emits the color and color change of the light steplessly to the outside and displays the water discharge temperature.

  That is, when the water discharge temperature is low, blue is displayed, when the water discharge temperature is high, red is displayed, and when the water discharge temperature is intermediate, a color corresponding to them is developed and the current water discharge temperature is indicated by the color change.

In the present embodiment, when the water purification sensor 120, the hot water sensor 118, and the water sensor 116 detect the hands substantially simultaneously, the detection by the water purification sensor 120 has the highest priority, and then the hot water sensor 118. Detection by is prioritized.
Specifically, when the water purification sensor 120 detects a hand, the detection of the other sensors, that is, the hot water sensor 118 and the water sensor 116 is invalidated for a certain period of time, and the detection by the hot water sensor 118 and the water sensor 116 is performed after a certain time has elapsed. Is activated.
Further, when the hot water sensor 118 detects a hand, the detection by the water sensor 116 is invalidated for a certain time, and the detection by the water sensor 116 is validated after a certain time has elapsed.
The controller 52 controls the operation of water discharge as such.

  As shown in FIG. 17, in this embodiment, the light temperature display unit 162 is sandwiched in the tube axis direction on the side of the water discharge tube main body 24 and by the front end surface of the water discharge tube main body 24 and the rear end surface of the water discharge head 22. Since the outer peripheral surface of the display surface 178 is used as a display surface 178 and the water discharge temperature is optically displayed on the display surface 178, the water discharge head 22 is provided as shown in FIG. Even when the water discharge pipe body 24 is set, that is, when the hose 20 is housed, or when the water discharge head 22 is pulled out of the water discharge pipe body 24 as shown in FIG. can do.

According to the present embodiment, the difficulty and difficulty of assembling the thermistor 170 to the pipe, the flexible hose 22 or the faucet body can be eliminated. Moreover, the thermistor 170 can be easily attached to the coupler 44.
In addition, since the thermistor 170 is located in the upstream portion sufficiently away from the water discharge port 18, the temperature of the temperature (temperature control water) detected by the thermistor 170 and displayed by the light temperature display unit 162 is subsequently discharged. Water is discharged from the water outlet 18, and the temperature of the water discharged from the light temperature display unit 162 and the actual temperature of the water discharged from the water outlet 18 can be matched correctly.

  Further, the thermistor 170 attached to the coupler 44 is maintained in a fixed position, and it is possible to solve the problem that the thermistor 170 and the electric wiring connected thereto move and cause a failure.

18 and 19 show another embodiment of the present invention.
In this embodiment, the water from the water supply main pipe and the hot water from the hot water supply main pipe are supplied directly to the mixing valve 58 in the main body 14 without going through the valve unit as described above, and the outflow path An electromagnetic valve 182 for opening and closing the outflow path 62 is provided in the coupler 180 that connects the outflow pipe 42 and the hose 20.
That is, here, an electromagnetic valve 182 for discharging or stopping temperature-controlled hot water from the water outlet 18 is provided on the secondary side of the mixing valve 58.

On the other hand, the second water supply passage 184 is branched and extended from the water supply passage 54 at the upstream portion of the mixing valve 58, and the tip thereof is connected to the outflow passage 62 and the downstream portion of the electromagnetic valve 182.
On the second water supply path 184, a constant flow valve 73 and an electromagnetic valve 186 that opens and closes the second water supply path 184 are provided.

On the other hand, a hot water sensor 118 and a water sensor 116 are provided on the upper surface of the water discharge pipe 16 in a line in the pipe axis direction.
However, here, the hot water sensor 118 is provided on the front side (front side) close to the user, and the water sensor 116 is provided on the back side.

  Also in this embodiment, the detection distance of the hot water sensor 118 on the near side close to the user is set shorter than the detection distance of the water sensor 116 on the back side, and the hot water sensor 118, the water sensor 116, However, when the human body is detected substantially simultaneously, the human body detection by the water sensor 116 on the back side is prioritized.

  In this embodiment, since the water from the second water supply channel 184 bypasses the mixing valve 58 and is discharged from the water outlet 18, it does not have a function of adjusting the flow rate at the time of water discharge, and is constant. Water is discharged from the water outlet 18 at a flow rate.

FIG. 19 specifically shows the internal structure of the coupler 180.
As shown in the figure, here, a thermistor 170 as a temperature detecting element for detecting the temperature of discharged water at the upstream portion of the coupler 180 is assembled together with the electromagnetic valve 182.
Furthermore, the coupler 170 incorporates an opening operation member 112 that opens the diaphragm valve 98 that forms the main valve of the water drain plug 110 and the electromagnetic valve 182.

  FIG. 20 shows still another embodiment of the present invention. Here, a water purification path 64 is provided instead of the second water supply path 184, and a hot water sensor 118 and water purification are provided on the upper surface of the water discharge pipe 16 correspondingly. The hot water sensor 118 is provided on the front side close to the user, and the water purification sensor 120 is provided on the back side.

Also in this example, among the hot water sensor 118 and the water purification sensor 120, the water purification sensor 120 on the back side has priority over the water sensor 118 on the near side close to the user, and the detection distance is The detection distance of the hot water sensor 118 on the near side is set shorter than that of the water purification sensor 120.
In the case of this embodiment, it is basically the same as the embodiment shown in FIGS. 18 and 19 except that purified water discharge is performed instead of water discharge.

FIG. 21 shows still another embodiment of the present invention.
In this embodiment, the second water supply channel 184 shown in FIGS. 18 and 19 and the water purification channel 64 in the embodiment of FIG. 20 are omitted, and the water discharge pipe 16 is provided with only a hot water sensor 118. Yes.
About another point, it is the same as that of embodiment shown in FIGS.

  Although the embodiment of the present invention has been described in detail above, this is merely an example. For example, in the present invention, the temperature display unit can be configured in various forms other than the above examples, and the present invention can be applied to various other hot water and water mixing faucets. The invention can be configured in various forms without departing from the spirit of the invention.

It is a figure which shows the automatic water tap which is one Embodiment of this invention. It is a figure which shows the flow path of the automatic water tap of the embodiment. It is a figure which shows the water discharging pipe and various sensors of the embodiment. It is a perspective view which shows the valve unit of the embodiment. It is a perspective view which cut | disconnects and shows the valve unit of FIG. 4 by a mutually different cut surface. It is sectional drawing in the cut surface different from FIG. 5 of the valve unit of FIG. It is a figure which shows the mixing valve in the embodiment. It is sectional drawing which shows the internal structure of the water discharging pipe of FIG. It is a figure at the time of separating the water discharge head in FIG. 8 from the water discharge pipe main body. FIG. 9 is an exploded perspective view of FIG. 8. It is the figure which showed a part of FIG. 10 in detail. It is the figure which showed each human body detection sensor in the same embodiment. It is a figure which shows a light temperature display part with the assembly structure. It is a figure of the single item of a light temperature display part. It is a figure at the time of performing purified water spouting. It is explanatory drawing of the flow-path switching in the same embodiment. It is a figure which shows the action state of the light temperature display part in the embodiment. It is a figure which shows other embodiment of this invention. It is the figure which showed the internal structure of the coupler in FIG. 19 in detail. It is a figure which shows other embodiment of this invention. It is a figure which shows other embodiment of this invention. It is a figure of the conventional water tap with a temperature display.

Explanation of symbols

18 Water outlet 20 Hose 38 Water supply pipe 40 Hot water supply pipe 42 Outflow pipe 44 Coupler (connector)
162 Light temperature display (temperature display)
170 Thermistor (temperature detection element)

Claims (1)

(A) a water supply pipe, (b) a hot water supply pipe, (c) a hot water mixing section for mixing and controlling the temperature of water and hot water sent through the water supply pipe and the hot water supply pipe, and (d) the mixing (E) a flexible hose that guides the temperature-controlled water to the water outlet, (f) a temperature detection element that detects the temperature of the temperature-controlled water, and (g ) In a hot and cold water mixing faucet with a temperature display comprising a temperature display section that displays a temperature based on detection by the temperature detection element, and connecting the outflow pipe and the flexible hose to each other with a connecting instrument, Rutotomoni mounting the temperature sensing element in a state facing the flow path of the temperature control water inside the connecting device to the coupling device, the temperature display unit, together with the flexible hose has the spout drawer The rear end surface of the possible water discharge head, and the water discharge pipe main body as a holder for holding the water discharge head in the storage position Temperature display with mixing valve, characterized in that is provided on the side of said discharge water pipe body at a position sandwiched between the distal end surface.

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