JP2548111B2 - Hot water mixing device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot and cold water mixing apparatus for supplying hot water by mixing hot water and water to obtain an appropriate temperature.

2. Description of the Related Art Conventionally, there is a hot and cold water mixing apparatus of this type as shown in FIG. (For example, Japanese Utility Model Laid-Open No. 55-59223) In FIG. 5, a hot water side valve body 5 and water are provided inside a valve frame A having a hot water inlet 1, a water inlet 2 and a mixed hot water outlet 3. A side valve body 6 is provided. The hot water side valve element 5 and the water side valve element 6 are mounted on a shaft 7 and driven by a motor 10 via a linear motion conversion mechanism 8 and a gear 9 provided outside. A mixed hot water temperature detector 11 for detecting the mixed hot water temperature is provided in the vicinity of the mixed hot water outlet 3.
The controller 13 compares the mixed hot water temperature value set by the mixed hot water temperature setting device 12 with the hot water temperature value detected by the mixed hot water temperature detector 11, and controls the motor 10. The terminal is provided with a faucet 14 for supplying mixed hot water. Then, open the faucet 14 and manually operate the mixed hot water temperature setting device 12 to set the mixed hot water temperature.
The controller 13 compares the value of the mixed hot water temperature detector 11 with the set value of the mixed hot water temperature, and the motor 10 is drive-controlled so as to eliminate the temperature deviation between the two.

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

(1) The operation of the faucet 14 and the operation of the mixed hot water temperature setting device 12 are required for hot water supply, which is troublesome and inconvenient.

(2) Especially when there are various combinations of flow rate and hot water temperature depending on the hot water supply target and the purpose of hot water supply, it is troublesome and time-consuming to finely adjust the faucet 14 aside from the mixed hot water temperature setting device 12 to match the hot water supply conditions. .

The present invention solves such a conventional problem, and by presetting and storing a combination of hot water supply conditions such as a flow rate of hot water and a hot water temperature, a hot water supply target and a hot water supply purpose can be achieved by a simple operation during use. It is an object of the present invention to provide a hot and cold water mixing device capable of supplying hot water suitable for the above.

Means for Solving the Problems In order to solve the above problems, a hot and cold water mixing apparatus according to the present invention includes a mixing valve that adjusts a mixing ratio of hot water and water, a mixing valve driving device that drives the mixing valve, and a mixing valve. A mixed hot water temperature detector that detects the hot water temperature, a flow control valve that adjusts the mixed flow rate, a flow control valve drive device that drives this flow control valve, and a condition that combines the hot mixed water temperature and the flow control valve opening degree. A plurality of hot water supply switches for instructing the execution of the hot water supply, and the mixed hot water temperature and the flow rate control valve opening stored in the storage unit corresponding to each of the plurality of hot water supply switches in response to any operation of the hot water supply switches. Temperature is controlled, the hot water supply is controlled by controlling the flow control valve drive device according to the hot water supply conditions of the hot water supply switch that is operated later, the opening is adjusted according to the flow control valve opening, and the mixed hot water temperature and the mixed hot water temperature are detected. Control the mixing valve drive by comparing It is configured to include a controller that starts the control for adjusting the temperature of the mixed hot water only by operating the hot water supply switch.

Operation With the above-described configuration, the present invention retrieves the stored mixed hot water temperature and the flow control valve opening corresponding to each of the plurality of hot water supply switches in accordance with any operation of the plurality of hot water supply switches, The hot water supply is controlled by controlling the flow control valve drive device according to the hot water supply condition of the pressed hot water supply switch, the opening is adjusted according to the flow control valve opening, and the signals of the mixed hot water temperature and the mixed hot water temperature detector are compared. To control the mixed hot water temperature by controlling the mixing valve drive device, and to perform hot water supply by combining the mixed hot water temperature and the flow control valve opening by one-touch operation of the hot water supply switch. We have realized the proper use according to.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows the first embodiment of the present invention. The hot water and water that have entered the valve frame body 17 through the hot water flow path 15 and the water flow path 16 are the hot water pressure and the water pressure. To the mixing valve 19 after equalizing the pressure by the pressure regulating valve 18. The mixing valve 19 includes a hot water valve body 20 and a water valve body 21, which are driven by a motor 23 and a gear box 24 provided outside via a shaft 22 and a mixing valve drive device 25 including a linear motion converting mechanism. It The temperature of the mixed hot water mixed by the mixing valve 19 is detected by the mixed hot water temperature detector 26. The mixed hot water is further passed through a flow control valve 28 having a valve body 27 for adjusting the mixed flow rate, and a mixed hot water flow path.
Hot water is supplied from faucet 30 through 29. The flow control valve 28 includes a flow control valve drive device 31 configured similarly to the mixing valve drive device 25.
Driven by Near the faucet 30, the hot water switch A3
2, hot water supply switch B33, hot water supply switch C34, stop switch 3
5, hot water supply indicator 37 consisting of a display tube 36 for displaying the mixed hot water temperature
Is provided.

The signals from the hot water supply indicator 37 and the mixed hot water temperature detector 26 are fetched by the controller 38, and the controller 38 is connected to the mixing valve driving device 25 and the flow control valve driving device 31. The controller 38 is constructed as shown in FIG. That is, the storage unit 39 that stores the preset mixed hot water temperature, the flow rate, and the integrated value of the flow rate, the storage extraction unit 40 that extracts the stored contents from the storage unit 39, the signal from the storage extraction unit 40, and the mixed hot water temperature detector 26 Mixing hot water temperature comparison unit 41 for comparing with a signal, a mixing valve drive device for controlling the mixing valve drive device 25 and the flow control valve driving device 31 based on the output signal of the mixed hot water temperature comparison unit 41 or the output signal of the storage extraction unit 41 Device control unit 4
2. It comprises a flow control valve drive device adjustment unit 43.

Next, the operation of the first embodiment will be described. It is assumed that hot water needs to be supplied and the hot water supply switch A32 of the hot water supply indicator 37 is first pressed. The signal from hot water supply indicator 37 enters controller 38, and storage extraction unit 40 extracts the hot water supply condition stored in storage unit 39 in accordance with the signal from hot water supply indicator 37 . This hot water switch A3
Assuming that the mixed hot water temperature of 40 ° C. and the flow rate “medium” are preset as the hot water supply conditions corresponding to 2, the signals corresponding to these values are the mixed hot water temperature comparison unit 41 and the flow control valve drive device adjustment unit.
Reported to 43. In the mixed hot water temperature comparison unit 41, the memory extraction unit 40
Is compared with the signal of the mixed hot water temperature detector 26, and the mixing valve drive device adjusting unit 42 adjusts the mixing valve drive device 25 so as to eliminate the deviation. On the other hand, the signal transmitted to the flow rate control valve drive device adjustment unit 43 controls the flow rate control valve drive device 31 by the flow rate control valve drive device adjustment unit 43 so that the opening degree of the flow rate control valve 28 becomes “medium”. . Specifically, for example, various means other than the means in which the motor 23 is configured by a step motor and the number of pulses corresponding to the opening degree "medium" is output by the flow control valve drive device adjustment unit 43 can be considered. In this way, the mixing ratio of the mixing valve 19 becomes a ratio at which the mixed hot water temperature corresponding to the switch A32 of the hot water supply indicator 37 is obtained, and the opening degree of the flow control valve 28 becomes an opening degree at which the corresponding flow rate is obtained. Next, when the hot water supply switch B33 of the hot water supply indicator 37 is pressed, assuming that the hot water supply conditions corresponding to this are, for example, a mixed hot water temperature of 60 ° C. and a flow rate of “large”, the same operation as for the hot water supply switch A32 is performed. The mixing valve 19 and the flow rate control valve 28 are controlled to obtain the mixed hot water temperature or flow rate as set. When the hot water supply switch C34 is pressed, for example, if the hot water supply conditions corresponding thereto are set to a mixed hot water temperature of 45 ° C., a flow rate of “large”, and a hot water supply time of 12 minutes, the mixed hot water temperature will be the same as in the previous two cases. The flow rate is adjusted. Along with that, from the time when the hot water supply switch C34 is pressed, the elapsed time is counted by the timer built in the flow control valve drive device adjustment unit 43, and when the set time reaches 12 minutes, the flow control valve
28 is driven to automatically stop hot water supply. The temperature of the mixed hot water during hot water supply is displayed on the display tube 36. When it is desired to stop hot water supply at any time during hot water supply, the stop switch 35 is pushed to immediately close the flow rate control valve 28 and stop hot water supply. As described above, in the present embodiment, the temperature of the mixed hot water that is highly necessary during hot water supply, the opening of the flow rate control valve 28 that affects the flow rate, and the hot water supply time are operated according to the conditions preset by the switch operation of the hot water supply indicator 37. As a result, the convenience is increased, and by designating the hot water supply time, it is possible to fill the bathtub with a predetermined amount of hot water, although there is some variation.

Next, a second embodiment will be described with reference to FIGS. In FIG. 3, the hot water and water that have entered the valve frame 46 through the hot water flow path 44 and the water flow path 45 first enter the pressure regulating valve 47 that equalizes the pressure of the hot water and the pressure of the water, and the pressure is equalized. After that, it is introduced into the mixing / flow rate control valve 48 which has both the function of the mixing valve and the function of the flow rate control valve. The mixing and flow rate control valve 48 is a hot water valve body 49 that controls the hot water flow rate, and a drive device that drives the hot water valve body 49 via a shaft 50.
A51 and a water side valve body 52 for controlling the flow rate on the water side, and a drive device B54 for driving this through a shaft 53. The temperature of the mixed hot water is detected by the mixed hot water temperature detector 55. The mixed hot water is supplied from the faucet 57 through the mixed hot water flow path 56. faucet
In the vicinity of 57, a hot water supply indicator 58 having the same configuration as that of the first embodiment is provided. Signal of hot water supply indicator 58,
The signal from the mixed hot water temperature detector 55 is taken in by the controller 59, and the signal is transmitted from the controller 59 to the drive unit A51, the drive unit B54, and the hot water supply indicator 58.

The controller 59 is constructed as shown in FIG. That is, a storage unit 60 that stores a preset mixed hot water temperature, valve opening, hot water supply time, etc., a storage extraction unit 61 that retrieves memory from the storage unit 60, a signal from the storage extraction unit 61, and a mixed hot water temperature detector 55. A mixed hot water temperature comparison unit 62 for comparing signals from the drive unit, and a drive unit based on the output signals of the mixed hot water temperature comparison unit 62 and the storage extraction unit 61.
It comprises an A51 and a drive device adjusting section 63 for driving and controlling the drive device B54.

Regarding the operation of the second embodiment, since hot water can be supplied under the predetermined hot water supply condition by operating the hot water supply indicator 58,
It is the same as the first embodiment in terms of usability for those who use the hot water supply. However, since the control method is somewhat different due to the fact that it serves as both the mixing valve and the flow rate control valve, that part will be explained. When the temperature of the mixed hot water is different from the target value, the drive control unit 63 controls the drive A51 and the drive B54, and controls the hot water valve body 49 and the water side valve body 52 in inverse proportion to each other. Adjust the temperature. In order to reduce the amount of mixed hot water while keeping the same temperature, the drive control unit 63 drives the valve body until the predetermined valve opening is reached while controlling the drive unit A51 and the drive unit B54 at a speed at which the mixing ratio becomes constant. Control. Further, when hot water supply for a predetermined time is reached, the hot water valve body 49 and the water valve body 52 are closed to stop the supply of the mixed hot water. Thus, in the second embodiment, the mixing / flow rate control valve 48 is
Is characterized in that it adjusts both the mixed hot water temperature and the mixed flow rate. Since it can serve as both the mixing valve and the flow rate control valve, the structure can be simplified and it can be supplied at low cost. It has an effect.

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

(1) Since the hot water supply can be performed and the mixed hot water can be supplied under the condition in which the mixed hot water temperature and the flow control valve opening which are set in advance in the storage unit are combined with one-touch operation of the hot water supply switch, the operation is extremely difficult. Easy to do.

(2) By any operation of a plurality of hot water supply switches, it is possible to perform a plurality of hot water supplies in which the mixed hot water temperature and the flow control valve opening which are set in advance under different conditions are combined, and the hot water supply switches can be operated arbitrarily. Since the hot water supply condition corresponding to the hot water supply switch that is operated later can be immediately changed, it is safe when hot water is accidentally discharged, and the hot water can be used properly according to the intended use, further improving convenience.

(3) Since hot water can be immediately supplied with the preset mixed hot water temperature and the flow control valve opening degree, it is possible to save energy without wastefully flowing hot water due to adjustment.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of an essential part of a hot water mixing apparatus according to the first embodiment of the present invention, FIG. 2 is a control block diagram of the same, and FIG. 3 is an enlarged cross sectional view of an essential part of a hot water mixing apparatus according to the second embodiment. FIG. 4 is a control block diagram thereof, and FIG. 5 is a sectional view of a conventional hot and cold water mixing apparatus. 19 …… Mixing valve, 25 …… Mixing valve drive, 26,55 …… Mixed water temperature detector, 28 …… Flow control valve, 31 …… Flow control valve drive, 32 …… Hot water switch A (Hot water switch ), 33 ……
Hot water supply switch B (hot water supply switch), 34 …… hot water supply switch C (hot water supply switch), 37 , 58 …… hot water supply indicator, 38, 59 ……
Controller, 39,60 …… Memory unit, 40,61 …… Memory retrieval unit, 41,6
2 …… Mixed hot water temperature comparison section (comparison section), 44,69 …… Integrated flow rate comparison section (comparison section), 42 …… Mixed valve drive adjustment section (adjustment section), 43 …… Flow control valve drive apparatus Adjustment part (adjustment part), 48
…… Mixing / flow control valve (mixing valve, flow control valve), 51 ……
Drive device A (mixing valve drive device, flow control valve drive device),
54 ... Drive device B (mixing valve drive device, flow control valve drive device), 63 ... Drive device adjustment unit (adjustment unit).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Fujieda 1006 Kadoma, Kadoma City, Matsushita Electric Industrial Co., Ltd. (72) Inventor, Koichi Ueki, 1006 Kadoma, Kadoma City, Matsushita Electric Industrial Co., Ltd. (56) References JP-A-59-117968 (JP, A) JP-A-56-20934 (JP, A)

Claims (1)

(57) [Claims] 1. A mixing valve for adjusting a mixing ratio of hot water and water, a mixing valve drive device for driving the mixing valve, a mixed hot water temperature detector for detecting a mixed hot water temperature, and a flow rate control for adjusting a mixed flow rate. A valve and a flow control valve drive device for driving the flow control valve,
Corresponding to each of the hot water supply switches, a plurality of hot water supply switches that instruct execution of hot water supply under the condition that the mixed hot water temperature and the flow control valve opening degree are combined and any operation of these hot water supply switches. The mixed hot water temperature and the flow control valve opening stored in the storage unit are taken out, and the flow control valve drive device is controlled according to the hot water supply condition of the hot water supply switch operated later to execute hot water supply and the flow control valve opening. A control for starting the opening degree control according to the operation of the hot water supply switch only by the operation of adjusting the opening degree and controlling the mixing valve driving device by controlling the mixing valve driving device by comparing the signals of the mixed hot water temperature and the signals of the mixed hot water temperature detector. Hot and cold water mixing device equipped with a water heater.