JPH0266384A - Combination faucet device - Google Patents

Abstract

PURPOSE:To obtain a combination faucet device excellent in maintainability with assembly adjustment facilitated by constituting the device of a control valve unit removably mounted integrally with a valve casing, setter setting a desired condition quantity of mixed water, mixing valve driving gear and its a controller controlling the driving gear. CONSTITUTION:For a condition quantity set by a measuring unit 28, a controller 29, while fetching signals from a temperature detector 23 and a flow amount detector 27, feeds a signal by a deviation amount respectively to a mixing valve driving gear 21 and a control valve driving gear 25, controlling a mixing valve 20 and a flow control valve 24 so as to obtain mixed water equal to the preset condition quantity. Because of constitution permitting a valve position to be singly adjusted, before mounting to a valve casing 19, with a mixing valve unit 22 removably mounted integrally to the valve casing 19, workability is improved at the time of assembly, even when the mixing valve 20 causes a trouble in rare possibility, the valve 20 can be replaced even with the separate mixing valve unit 22 with no necessity for removing the valve together with the valve casing 19 from the piping, and a device is excellent in maintainability.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hot water mixing device for mixing hot water and water to obtain an appropriate temperature.

2. Description of the Related Art Conventionally, there has been a hot water mixing device of this type as shown in FIG. (For example, Japanese Unexamined Utility Model Publication No. 55-59223) In Fig. 4, inside a valve housing 4 having an inlet 1 for hot water, an inlet 2 for water, and an outlet 3 for mixed hot water, there is a valve body 5 on the hot water side and a valve body 5 on the water side. The valve body 6 is attached to a shaft 7 and driven by a motor 10 via an external linear motion conversion mechanism 8 and a gear 9. A mixed hot water temperature detector 11 is provided near the mixed hot water outlet 3 to detect the mixed hot water temperature. to control the motor 10. In addition, piping 14
A faucet 15 is provided at the terminal via the terminal. Then, when the faucet 15 is opened and the mixed water temperature is set by the mixed water temperature setting device 12, the value of the mixed water temperature detector 11 and the set value of the mixed water temperature are used as signal values in the controller 13, and the temperature difference between the two is calculated. The motor IO is controlled to eliminate the problem.

Problems to be Solved by the Invention However, the above configuration has the following problems.

The hot water side valve body 5 and the water side valve body 6 are constructed to be assembled inside the valve housing 4, which is not easy to assemble or maintain.

Also, a gear 9 that transmits the drive of the motor 10 to the valve position
It was necessary to adjust the mounting position of the valve casing 4 while all the parts were attached to the valve housing 4, which made the adjustment extremely difficult and inconvenient to perform maintenance after construction.

The present invention is intended to solve these conventional problems, and an object of the present invention is to provide a hot water mixing device that is easy to assemble and adjust and is easy to maintain.

Means for Solving the Problems In order to solve the above problems, the hot water mixing device of the present invention includes a valve housing having a hot water inflow path, a water inflow path, and at least one outflow path, and a valve housing that can be integrally attached to and detached from the valve housing. , a mixing valve unit consisting of a mixing valve that changes the flow rate ratio of hot water and water to obtain an appropriate temperature, and a mixing valve drive device that electrically drives the mixing valve; and a mixing valve unit that is installed downstream of the mixing valve, and is installed downstream of the mixing valve to perform hot water supply and stop. and a flow control valve for adjusting the flow rate, and a control valve driving device for electrically driving the flow rate control valve, and a control valve unit that can be attached and detached integrally to the valve housing, and a state quantity of the desired mixed water is set. and a controller that controls the mixing valve drive device and the control valve drive device.

Effect With the above configuration, the controller sends a signal to the mixing valve drive device and the control valve drive device in response to the state quantity set by the setting device, controls the mixing valve and the control valve respectively, and makes the state quantity equal to the set state quantity. This is used to obtain mixed water, and the lining of the valve body consists of simply incorporating a mixing valve unit and a control valve unit into the valve housing.

EXAMPLES Hereinafter, examples of the present invention will be described based on the accompanying drawings. In FIG. 1, a valve housing 19 having a hot water inflow path 16, a water inflow path 17, and at least one outflow path 18, and a valve housing 19 that can be attached and detached integrally with the valve housing 19, and which are capable of changing the flow rate ratio of hot water and water, A mixing valve unit 1- consists of a mixing valve drive device 21 for electrically driving the mixing valve plate.
22, and a temperature detector 23 downstream of the mixed benten coin.
is installed to detect the temperature of the mixed water. It consists of a flow rate control valve B that is provided downstream of the mixing valve and performs hot water tapping/stopping and flow rate adjustment, and a control valve drive device 25 that electrically drives the flow rate control valve B. Control valve unit t-26 that can be attached and detached as one unit like unit η
and a flow rate detector 27 for detecting the flow rate of the mixed water, a setting device 28 for setting the desired temperature of the mixed water and state variables such as hot water supply/stop, and a signal from the setting device 28 and a temperature detector 2.
3 or a controller 29 that compares the signals of the flow rate detector 27 and controls the mixing valve drive device 21 and the control valve drive device 25 based on the amount of deviation.

FIG. 2 shows the configuration of the mixing valve unit 22.

In FIG. 2, the hot water side valve body 30 and the water side valve body 31 are on the same axis 32, and the two valve bodies 30. ．． 31, the hot water side valve seat 33 and the water side valve seat 34 are provided inside the cylinder 35, a motor 36 is provided as the mixing valve driving device 21, and the shaft 32 and the motor 36 are connected by a connection mechanism 37. ,
A screw mechanism 38 that converts the rotation of the shaft 32 into a thrust motion is provided in a bearing part in the cylinder 35, and the rotation of the motor 36 is converted into the thrust motion of the shaft 32, and the shaft 3
The hot water side valve body 30 and water side valve body 31 provided on the top of the hot water side valve body 30 and water side valve body 31 perform inversely proportional opening and closing operations on the corresponding hot water side valve seat 33 and water side valve seat 34, respectively, to adjust the flow rate ratio of hot water and water. The temperature is adjusted to a predetermined temperature by changing the temperature. Coaxially with the coupling mechanism 37, two cams 40 and 41 are installed as position detectors for detecting the valve positions of the hot water side valve body 30 and the water side valve body 3 of the mixing valve 20.
and microswitches 42 and 43 are provided to detect the fully open position of the hot water side valve body 30 and the fully open position of the water side valve body 31, respectively.

FIG. 3 shows the configuration of the control valve unit 1-26. In FIG. 3, the first valve body 44 and the second valve body 45 are arranged on the same shaft 4.
6, there are a first valve seat 47 and a second valve seat 48 corresponding to the two valve bodies 44, 45, and the first valve seat 47 is configured on the end face of the cylinder 49, On the other hand, the second valve seat 4
8 is provided inside the valve housing 19.

A motor 50 is provided as the control valve driving device 25, and the shaft 46 and the motor 50 are connected to the motor 50 via a coupling mechanism 51.
The rotation of the first valve body 44 and the second valve body 45 provided on the shaft 46 is converted into a thrust motion of the shaft 46 when the control valve unit 26 is attached to the valve housing 19. are at the neutral point with respect to the corresponding first valve seat 47 and second valve seat 48, respectively, both valve bodies 44.4
5 are in contact with two corresponding valve seats 47 and 48, respectively,
When both the first outlet 52 and the second outlet 53 provided in the valve housing 19 are opened and the shaft 46 is driven to the right,
The second valve body 45 remains in contact with the second valve seat 4B, and
The valve body 44 is removed from the first valve seat 47, and the first outlet 52 is opened. On the other hand, when the shaft 46 is driven to the left, the first valve body 44 remains in contact with the first valve seat 47.
The second valve body 45 is disengaged from the second valve seat 48 and the second outlet 53 is opened, i.e. the two outlets 52.5
This function is used to supply, stop, and switch the hot water to and adjust the flow rate.

With the above configuration, the controller 29 receives the signals from the temperature detector 23 and the flow rate detector 27, and controls the mixing valve driving device 21 and the control valve, respectively, based on the deviation amount, with respect to the state quantity set by the measuring device 28. The mixing valve 20 sends a signal to the drive device 25 to obtain mixed water equal to the set state amount.
It controls the flow rate control valve 24. Also, setting device 2
When hot water, such as pouring hot water, is supported by 8, the mixing valve 20 is driven in the direction of fully opening the hot water side via the mixing valve driving device 21, regardless of the signal from the temperature sensor 23, and the fully open hot water side is detected. When the micro switch 42 is turned on by the corresponding fully open hot water side detection cam 40, the mixing valve driving device 21 is stopped and the valve position of the mixing valve 20 is fixed. On the other hand, when cold water is instructed by the setting device 28, the mixing valve 20 is driven in the water side fully open direction via the mixing valve drive device 21, regardless of the signal from the temperature detector 23, and the water side is fully open. When the micro switch 43 is turned on by the corresponding water side full open detection cam 41, the mixing valve driving device 2 is turned on.
1 and fix the valve position of the mixing valve plate. In other words, the mixing valve plate is configured to be driven between the hot water side fully open detection microswitch 42 and the water side fully open detection microswitch 43, that is, within the rotation range of the two cams 40 and 41.
If the valve position of the mixing valve 20 and the positional relationship between the two cams 40 and 41 and the two microswitches 42 and 43 are misaligned, only lukewarm water mixed with hot water may come out even if cold water is instructed. In this case, the mixing valve unit 22 is integrated and removable from the valve housing 19, and the valve position can be adjusted independently before being attached to the valve housing 19, so it is easy to assemble and is easy to assemble. Even in the event of failure, it is possible to replace the mixing valve unit n with another mixing valve unit n without removing the entire valve housing 19 from the piping, resulting in excellent maintainability.

Effects of the Invention As described above, according to the hot water mixing device of the present invention, the following effects can be obtained.

(1) The mixing valve unit and the control valve unit are integrated and can be attached to and detached from the valve housing, so workability during assembly is good.

(2) Even in the event that a mixing valve or control valve breaks down, the valve housing can be removed from the valve housing and checked without being dislodged from the piping, making it easier to repair.

(3) The mixing valve unit and the control valve unit are constructed as independent parts, and are easy to replace and have excellent maintainability.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a hot water mixing device according to an embodiment of the present invention, FIG. 2 is a diagram of a mixing valve unit in the device, FIG. 3 is a diagram of a control valve unit in the same device, and FIG. 4 is a diagram of a control valve unit in the same device. FIG. 1 is a block configuration diagram showing a conventional hot water mixing device. 16... Hot water inflow path, 17... Water inflow path, 18... Outflow path, 19... Valve housing,
20...-Mixing valve, 21...Mixing valve drive device, η...Mixing valve unit, and...
・Flow rate control valve, 25...Control valve drive device, housing・
... Control valve unit, 28 ... Setting device,
29...Controller. Name of agent Patent attorney Shigetaka Awano 1 person 16 -・ t9... Garden °- 2j... 1 Meng input Rakumoto inlet flow outlet 1 valve mixed @ valve mixed valve assembly vJ device 25- Side part Ben M & Kanedi 1 δ-Amisan Ben Uninote-Koren #-! II

Claims (3)

[Claims] (1) A valve housing having a hot water inflow path, a water inflow path, and at least one outflow path, a mixing valve that can be attached and detached integrally to the valve housing and that changes the flow rate ratio of hot water and water to obtain an appropriate temperature; A mixing valve unit consisting of a mixing valve driving device that electrically drives the mixing valve, a flow control valve that is provided downstream of the mixing valve and performs hot water supply/stop and flow rate adjustment, and the flow control valve that is electrically driven. a control valve unit that can be integrally attached to and removed from the valve housing; a setting device that sets the desired state quantity of mixed water; and a signal from the setting device that controls the mixing valve driving device and the control valve. A hot water mixing device consisting of a controller that controls a drive device. (2) The mixing valve unit includes a hot water side valve body, a water side valve body, one mixing valve shaft that drives the two valve bodies, and a hot water side valve seat corresponding to the two valve bodies. a mixing valve consisting of a cylinder with a water side valve seat provided therein; a motor provided as a mixing valve driving device; a connection mechanism that transmits the rotational movement of the motor to the mixing valve shaft; a screw mechanism that converts into thrust motion, and a screw mechanism provided coaxially with the coupling mechanism,
The hot water mixing device according to claim 1, comprising position detection means for detecting the valve position of the mixing valve, and configured to be able to independently adjust the valve position before being mounted on the valve housing. (3) The control valve unit includes a control valve, a control valve shaft that drives the control valve, a connection mechanism that includes a motor as a control valve driving device and transmits rotational motion of the motor to the control valve shaft, and the control valve shaft that drives the control valve. It consists of a screw mechanism that converts the rotation of the control valve shaft into a thrust motion, and a position detection means that is provided coaxially with the connection mechanism and detects the valve position of the control valve. A hot water mixing device according to claim 1, wherein the valve position can be adjusted by adjusting the valve position.