JPH0429302Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention enables each operation of setting the hot water temperature, switching and stopping the supply of hot water to either the faucet or the shower head using a switch. Now it can be done with one touch operation. This relates to a thermostatic hot water mixing faucet.

(Prior Art) Various thermostatic mixer faucets have been proposed, but their basic configurations are, for example,
It was as shown in Figure 3.

That is, in the figure, 1 is a stopper body, 2 is a temperature control handle, 3 is a set temperature scale, and 4 is a marking for indicating a set position. 5 and 6 are faucets and shower pipes, and 7 is a switching handle.

Therefore, by rotating the temperature control handle 2, it is possible to obtain mixed hot water at a hot water temperature set based on the temperature scale 3. Also, the direction of hot water supply is determined by the switching handle 7.
By rotating the faucet 5 to either side,
Alternatively, it is possible to switch to either the shower pipe 6.

Note that 8 is a safety button, and unless the button 8 is pressed, the temperature control handle 2 cannot be rotated to a higher temperature than a predetermined temperature.

(Problem to be solved by the invention) By the way, in the case of the above structure, when setting the water temperature, the handle 2 is rotated so that the temperature scale 3 is aligned with the marking 4, and
In order to stop the hot water supply or switch the hot water supply direction, manual operations such as confirming the switching direction of the handle 7 and rotating the handle 7 are required, and the operability thereof is not always satisfactory.

In particular, when changing the hot water supply direction, if the handle 7 has already been rotated to either the faucet side or the shower head side, when switching to the other side, the handle 7 must be rotated in either direction. It was easy to get confused as to whether it was the right thing to do, and to make erroneous operations.

In view of the above-mentioned problems, this invention has been developed to: (a) reliably and easily set the hot water temperature, switch and supply hot water to either the faucet or the shower head, and supply the hot water to either the faucet or the shower head; It has good operability as it can perform various operations such as stopping and stopping, and in addition, the main body and related accessories are housed in one case, and the operation part is also attached to the case, making the whole compact. In addition, it can be installed at the end of existing water supply pipes and hot water pipes without any modification, and it can be installed directly at the end of existing water supply pipes and hot water pipes without any modification. The objective is to provide a thermostatic mixer faucet that can use the same structure as the faucet.

(Means for solving the problem) This invention consists of the following configuration to achieve the above object. That is, the thermostatic hot water mixer faucet according to this invention has a control valve that is activated by a temperature sensor that detects changes in the temperature of hot water and automatically controls the temperature of the hot water, and a control valve that moves the position of the control valve. A tap body is provided with a hot water temperature adjusting section for setting the hot water temperature, and rotation in the forward and reverse directions is transmitted to the spindle of the hot water temperature adjusting section of the tap body through a transmission means such as a gear. The motor that operates the hot water temperature adjustment part and the hot water mixed in the mixing chamber of the faucet body are switched and supplied to either the faucet or the shower head, or the hot water is supplied to either the faucet or the shower head. and a valve device that operates to stop the supply of hot water are housed in one case.

A discharge device such as a faucet or a shower head is connected to the faucet body in the case, and a plurality of units are installed on the surface of the case to drive the motor to raise or lower the set water temperature. a first switch consisting of a switch; a temperature display unit that displays a set hot water temperature in conjunction with the operation of the first switch; and a temperature display unit that operates the valve device to supply hot water to either the faucet or the shower head. supply switching,
Alternatively, an operating section is provided with a second switch consisting of a plurality of switches for stopping the supply of hot water to any of them.

(Function) By operating the first switch, the motor in the case is driven and the hot water temperature adjustment section is activated.
The display section displays the set temperature that is increasing or decreasing. By operating the second switch, a valve device inside the case is driven, and the mixed hot water set at a predetermined temperature is switched to the discharge device of either the faucet or the shower head connected to the faucet body inside the case. or stop the supply to any of the dispensing devices.

(Example) Hereinafter, an example of this invention will be described based on the drawings. Reference numeral 11 in the figure is a case that houses the tap main body A and other related accessories, and the operating part B, which will be described in detail later, is provided on the surface of the case. Inside the tap main body A, there are connections to the water supply source and the hot water source, respectively. A water chamber 12, a hot water chamber 13, and a mixing chamber 15 into which the mixed hot water that has passed through the hot water temperature control section 14 flows are formed.

The hot water temperature control unit 14 controls the water valves 1 corresponding to the water valve seats 16 of the water chamber 12 and the hot water valve seats 17 of the bath chamber 13, respectively.
8 and a hot water valve 19, the control valve 20 is capable of moving forward and backward in its axial direction,
It is adapted to come into contact with and separate from the water valve seat 16 and hot water valve seat 17.

The control valve 20 is pressed toward the water valve seat 16 by a spring 21, and a temperature sensing case 23 housing a temperature sensing element 22 and movable back and forth is arranged on the other side. The temperature sensing body 22 is an element that expands and contracts in response to temperature changes, for example,
It is provided with a temperature sensing part 24 filled with wax, and a rod 25 can be freely moved in and out from its tip by expansion or contraction of the element.

On the other hand, a hot water temperature adjusting section 26 is provided in the direction in which the rod 25 extends. The adjustment part 26 is the element presser 2
7. Consists of a safety spring holder 28, a spindle 29, an operating cylinder 30, etc. The base end of the operating barrel 30 is connected to a cylindrical guide socket 31 screwed onto the plug body A.
It is screwed onto the inner peripheral surface of the shaft, and can be moved in the axial direction by rotation. Further, the spindle 29 engages with the inner circumferential surface of the operating cylinder 30, and rotates relative to the socket 31, but does not move in the axial direction.

A gear 33 is attached to the outer end 32 of this spindle 29, and a gear 34 that meshes with this gear 33 is attached to an output shaft 36 of a built-in motor 35 such as a DC servo motor. The motor 35 is
It is electrically connected to an operating section B provided on the surface of the case 11, and is driven by turning on the first switch 37 thereof.

The first switch 37 is an UP switch 37a.
DOWN switch 37b, and by pressing each one individually, the motor 35
can be rotated in forward and reverse directions.

The upper operating section B of this first switch 37
In conjunction with the operation of the switch 37, there is provided a temperature display section 38 that numerically displays the set hot water temperature, for example, on a digital display (an analog display may also be used). The display unit 38 shows the set water temperature based on the rotation direction and rotation angle of the output shaft 36 of the motor 35 or the rotation direction and rotation angle of the spindle 29, which rotates in conjunction with the output shaft 36 via gears 34 and 33. Calculate and display numerical values.

Thus, by operating the first switch 37, the motor 35 can be driven and the adjustment section 26 can be operated.

That is, if the motor 35 is driven to rotate in the forward direction by first pressing the UP switch 37a, the gears 34,
The spindle 29 rotates via the actuating cylinder 30
retreats. Therefore, the control valve 20 moves toward the water valve seat 16 due to the elasticity of the spring 21, and the temperature sensing element 22 also moves backward from its operating position.
At this time, the display unit 38 numerically displays the set temperature that increases in conjunction with the pressing operation of the switch 37a.

On the other hand, if the motor 35 is driven to reverse rotation by pressing the DOWN switch 37b, the operating cylinder 30
moves forward and is pressed by the element presser 27, so that the temperature sensing element 22 moves forward through its operating position.
Further, the control valve 20 also moves toward the hot water valve seat 17 while compressing the spring 21. At this time, the display unit 38 numerically displays the set temperature that is decreasing in conjunction with the pressing operation of the switch 37b.

In this way, by operating the first switch 37, the adjusting section 26 is actuated and the temperature sensing element 24 and the control valve 20 are moved to set the temperature of the mixed hot water, and the set temperature is displayed on the display. The numerical value is displayed at 38.

However, if the temperature of the mixed hot water becomes higher or lower than the set temperature, the control valve 20 is activated by the temperature sensor 22 that senses the temperature change to automatically control the hot water temperature. That is, when a high temperature mixed hot water is generated, the wax inside the temperature sensing part 24 expands and pushes out the rod 25. Therefore, the temperature sensing element 22
moves toward the control valve 20, so the control valve 2
0 in the direction of closing the hot water valve 19 and at the same time the water valve 1
8 in the direction of opening in an attempt to lower the water temperature and return it to the set temperature. Further, when mixed hot water at a low temperature is generated, the wax in the temperature sensing section 24 contracts, so the temperature is returned to the set temperature by operating in the opposite manner to the above.

Next, a mechanism for supplying the mixed hot water set at a predetermined temperature to the discharge tool will be described.

First, a plug body A
Outflow chambers M and N are formed with valve ports 42 and 43, which communicate with a faucet 40 and a shower head 41, respectively, which are discharge devices connected to the outlet. These valve ports 42 and 43 are either opened to switch and supply the hot water in the mixing chamber 15 to either one of the discharge devices, that is, the faucet 40 or the shower head 41, or closed to supply either one of the discharge devices. A valve device, for example, electromagnetic valves 44 and 45, for stopping the supply of hot water to the utensils is also provided. The electromagnetic valves 44 and 45 open and close the flow paths 48 and 49 leading from the mixing chamber 15 to the respective outflow chambers M and N by opening and closing the valve valves 46 and 47, respectively. 51.

The diaphragm valves 50, 51 are entirely made of circular elastic bodies, have a through hole 52 in the center, and have a bent part 53 with a partially thinner thickness on the outer periphery thereof. A portion of the hot water in the mixing chamber 15 is placed near the mixing chamber 15 side of the bent portion 53 through the valves 50 and 5.
A communication hole 54 is provided that flows into the back side of 1.

Further, a valve chamber 55 is formed on the back side of the valves 50 and 51, and a plunger 57 of the solenoid 56 is formed.
A guide tube 58 is provided to guide the movement of the tube.
Then, the opening flange portion 59 of the guide tube 58 presses down the outer peripheral edges of the valves 50 and 51, and the tightening plate 60 is tightened and fixed with the screws 61. 62 presses the plunger 57 in the direction of the valves 50 and 51, and its tip 57a
A coil spring 63 that closes the through hole 52 is a fixed core of the solenoid 56.

The solenoid 56 is electrically connected to an operating section B provided on the surface of the case 11, and is driven by turning on the second switch 64.

The second switch 64 directs the hot water supply direction to the faucet 40.
a pipe changeover switch 64a for switching to the side;
It consists of a shower changeover switch 64b that switches to the shower head 41 side, and a stop switch 46c that stops the supply of hot water to both the faucet 40 and the shower head 41.

Thus, by operating this second switch 64, the solenoid 56 of each electromagnetic valve 44, 45 is
It is possible to drive and stop the drive, and perform operations such as switching the hot water supply direction and stopping the hot water supply.

That is, when the solenoid 56 of the solenoid valve 44 is driven by first pressing the pipe changeover switch 64a, the plunger 57 is moved by the spring 62.
It moves backward against the elasticity of and is magnetically attached to the fixed iron core 63. Due to this backward movement, the tip 57a of the plunger 57 separates from the valve 50 and its through hole 52 opens. By opening the through hole 52, the valve chamber 5
Hot water in the chamber 5 flows into the outflow chamber M through the through hole 52. Therefore, the pressure pushing down the valve 50 toward the valve seat 46 is greater than the reaction force pushing the valve 50 toward the valve seat 46, and this differential pressure causes the valve 50 to open its valve port 42. Therefore, the hot water that has flowed into the mixing chamber 15 is supplied to the outflow chamber M and further to the faucet 40 through the flow path 48.

Next, by pressing the shower changeover switch 64b, the power to the solenoid 56 of the solenoid valve 44 is turned off, and at the same time, the power to the solenoid 56 of the solenoid valve 45 is turned on.

Therefore, the plunger 57 of the solenoid valve 44 is released from the magnetic attraction, and the elasticity of the spring 62 causes the plunger 57 of the solenoid valve 44 to
direction, and closes the through hole 52. The valve 50 is closed, and hot water supply to the faucet 40 is stopped. On the other hand, the solenoid 56 of the electromagnetic valve 45 is driven, and based on the same operation as described above, the solenoid 51 is moved to the valve port 43 of the solenoid valve 45.
Open. Therefore, the hot water that has been supplied to the outflow chamber M changes its direction and is supplied to the outflow chamber N and further to the shower head 41 through the flow path 49.

Furthermore, by pressing the stop switch 64c, the solenoid 56 of the solenoid valve 45 is also energized.
It is turned off, and the supply of hot water to the shower head 41 is also stopped.

In addition, each switch 64a, 64b can also switch the hot water supply direction from the shower head 41 to the faucet 40, or supply hot water to the faucet 40 and then stop the supply.
and 64c.

FIG. 2 is a schematic circuit diagram showing the electric system of the hot water mixing faucet described in detail above. In the same figure, 65 is a DC power supply device that converts 100V AC to 24V DC, and Sw1 and Sw2 are the above-mentioned first
Switch 37 and second switch 64 are shown. In addition, in order to obtain hot water higher than the specified temperature,
For example, if you do not press the UP switch 37a and another safety button switch at the same time, the UP switch 37a must be pressed.
A safety circuit may be provided to prevent the ON operation.

Further, in this embodiment, a solenoid valve is used as a valve device for supplying hot water in the mixing chamber 15 to the discharge tool side, but the device is not necessarily limited to a solenoid valve. For example, an on-off valve is configured by a fixed plate made of a ceramic plate and a movable plate superimposed on the fixed plate in a watertight manner. The movable plate may be rotated by a servo motor or the like driven by turning on the second switch 64, and the valve may be opened to supply hot water to the dispensing device.

In addition, various design changes are possible without departing from the spirit of this invention, such as changing the output transmission means from the motor 35 to the hot water temperature adjusting section 26 to a mechanism or device other than gears.

(Effects of the invention) The thermostatic hot water mixing faucet according to this invention has the above-mentioned configuration, and can obtain the following effects.

1. Setting the hot water temperature, switching the supply of hot water to the faucet or shower head, and stopping the supply can be performed with a single touch of a finger. Since the set temperature of the mixed hot water is displayed on the temperature display section in conjunction with the operation of the first switch for setting the hot water temperature, confirmation of the set temperature and setting operation are extremely easy. Furthermore, since the multiple switches that make up the second switch are responsible for switching the supply of hot water to either the faucet or the shower head, and stopping the supply, the user can easily perform the operation incorrectly. The operability is extremely good.

2. A faucet body, a motor that operates the hot water temperature installation part of the faucet body, and related accessories such as a valve device that switches and stops the supply of hot water and the like are housed in one case, and
By providing the operating section on the surface of the case, the entire mixing faucet together with the operating section can be compactly integrated into one case. Because of this integrated integrated structure, there is no need for special piping work to install a mixer faucet, and there is no need to make any changes to existing water supply pipes or hot water pipes. alike,
All installation work is completed by simply attaching the entire case to the ends of the water supply pipes and hot water supply pipes, making the work for installing the mixer faucet simple and easy.

3 Moreover, a control valve operated by a temperature sensor,
The faucet structure of the existing thermostatic hot water mixing faucet that has been commonly used in the past, which consists of a hot water temperature adjustment part that sets the hot water temperature by moving the position of this control valve, can be used as is, so there is no special structure. There is no need to prepare a separate stopper body, and it is possible to provide an inexpensive mixed tap with a simple structure.

[Brief explanation of drawings]

Fig. 1 is a front sectional view showing an embodiment of the thermostatic hot water mixing faucet according to this invention, Fig. 2 is a schematic circuit diagram of its electrical system, and Fig. 3 is an example of a conventional thermostatic hot water mixing faucet. FIG. DESCRIPTION OF SYMBOLS 11... Case, 15... Mixing chamber, 20... Control valve, 22... Temperature sensing element, 26... Hot water temperature adjustment section, 2
9... Spindle, 33, 34... Gear as transmission means, 35... Motor, 37, 37a, 37
b...First switch, 38...Temperature display section, 40
... Faucet, 41 ... Shower head, 44, 45
... Solenoid valve as a valve device, 64, 64a, 64
b, 64c...Second switch, A...Bung body, B
...Operation section.

Claims (1)

[Claim for Utility Model Registration] A control valve that automatically controls the water temperature by being activated by a temperature sensor that detects changes in the temperature of the hot water, and a control valve that sets the water temperature by moving the position of the control valve. A tap body including a hot water temperature adjusting section; and a tap body that controls the hot water temperature adjusting section by transmitting rotation in the forward and reverse directions to the spindle of the hot water temperature adjusting section of the tap body through a transmission means such as a gear. Switching and supplying the hot water mixed in the mixing chamber of the faucet body with the operating motor to the discharge device of either the faucet or the shower head, or supplying the hot water to either the faucet or the shower head discharge device. A valve device that operates to stop is housed in one case, and the faucet and discharge device such as a shower head are connected to the faucet body in the case, and the motor is mounted on the surface of the case. A first switch consisting of a plurality of switches that is driven to raise or lower the set water temperature, and a temperature display section that displays the set water temperature in conjunction with the operation of the first switch. , driving the valve device to switch and supply hot water to either the faucet or the shower head;
Alternatively, a thermostatic hot/cold water mixing faucet characterized by being provided with an operating section including a second switch consisting of a plurality of switches for stopping the supply of hot water to any of them.