JP2623545B2 - Water heater - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply apparatus for adjusting hot water supply temperature and supplying hot water to a plurality of hot water supply objects having different use temperature ranges.

2. Description of the Related Art FIG. 8 shows a conventional hot water supply apparatus of this type. (For example, Japanese Utility Model Application Laid-Open No. 61-18424) In FIG.
The hot water supply pipe 3 and the water supply pipe 4 which have passed through are connected to the constant temperature hot water supply device 5. Inside the constant temperature hot water supply device 5, a hot water supply valve 3 is connected to the hot water supply pipe 3 and a water quantity valve 7 is connected to the water supply pipe to adjust the mixing ratio. The mixing path 8 is provided with a thermistor 9 for detecting the temperature of the mixed hot water, and a controller for arbitrarily adjusting the signal of the thermistor 9 and the temperature of the mixed hot water.
The control device 11 controls the hot water quantity valve 6 and the water quantity valve 7 based on the signal 10. Mixing water is supplied to the faucet 12 provided at the end of the mixing line 8.
After that, the water is supplied to the bathtub 13 to be supplied with hot water.

The water quantity valve 6 and the water quantity valve 7 are driven by a water quantity valve motor 15 and a water quantity valve motor 14 controlled by the control device 11, and the signal of the thermistor 9 is fed back to perform control.

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

(1) In order to raise the temperature of the bathtub 13, after hot water is added, for example, even if the temperature is reduced to a low temperature by the controller 10, the hot water remains in the mixing pipe 8 and the faucet 12 is opened again. Hot water was supplied and was dangerous.

(2) In the bathroom, besides the bathtub 13, there is a hot water supply object with a different operating temperature range from the bathtub 13, such as a washing place or a shower, or the faucet 12 and the constant temperature hot water supply device 5 have a one-to-one correspondence.
In order to handle a plurality of hot water supply targets, the same number of constant temperature hot water supply devices were required.

(3) When hot water is to be supplied to a plurality of hot water supply targets using only one constant temperature hot water supply device, if a plurality of taps are provided by branching off from the mixing pipe 8, other taps are opened during the supply of hot water to the bathtub 13. It was dangerous because hot water was supplied to it.

An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide a hot water supply apparatus capable of completely and conveniently improving hot water supply to a plurality of hot water supplies having different use temperature ranges. .

Means for Solving the Problems In order to solve the above problems, the hot water supply apparatus of the present invention supplies a temperature adjusting means for adjusting the hot water supply temperature and hot water having a different hot water supply temperature range adjusted by the temperature adjusting means. A plurality of hot water outlets, a switching valve for switching between the plurality of hot water outlets, a hot water inlet setting unit for selecting the hot water inlet, a hot water temperature changing unit for changing the hot water temperature setting of the temperature control means, A hot water temperature presetter for setting the hot water temperature to a predetermined temperature within a different hot water temperature range determined for each hot water outlet, and a hot water heater in which the switching valve and the temperature control means are controlled according to the settings of the hot water outlet setting unit to select the hot water temperature. A controller for controlling a predetermined temperature of the hot water temperature presetting section corresponding to the mouth, controlling the temperature adjusting means according to the setting change of the hot water temperature changing section, and changing the hot water temperature within the hot water temperature range of the selected hot water inlet. Configure Things.

According to the present invention, the hot water outlet set by the hot water outlet setting unit selects the hot water outlet to be used, the hot water outlet is switched to the hot water outlet, and the hot water outlet is set to the predetermined temperature set by the hot water temperature presetting unit within the hot water temperature range. The setting is changed, and by controlling the temperature adjusting means in accordance with the setting in the hot water temperature changing section and changing the treatment temperature within the hot water temperature range of the selected hot water outlet, the hot water to be supplied to the hot water supply object for which the high temperature is not desired. The danger that hot water is supplied can be prevented, and operability and safety are further improved.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, hot water produced by a water heater 16 is supplied to a hot water path 17.
, And water is introduced into a mixing unit 19 which is a temperature adjusting means via a water-side path 18. And hot and cold water is a check valve
20,21, pressure balance valve 22 to balance hot water pressure and water pressure
To the mixing valve 2. The mixing valve 23 is of an electrically controlled type driven by a motor, and the mixed hot water whose mixing ratio is adjusted reaches a switching valve 27 via a thermistor 24, a flow sensor 25, and a pressurizing pump 26. The switching valve 27 is also of a type that is driven by a motor and is electrically controlled, and the switching valve 27 switches between the hot water supply port A28 and the hot water supply port B29. The hot water supply port A28 is usually connected to the shower 30 and the cull 31 of the washing place which requires water or hot water in a temperature range up to about 45 ° C. via a path A32. Further, the hot water supply port B29 is connected to a discharge port 34 of a bathtub 33 that requires not only about 42 ° C. but also hot water from water via a path B35. In the case of the hot water supply port A28, if the switching valve 27 fails or the control circuit 36 fails, the shower valve 30
And a mechanical temperature safety valve 37 having a temperature-sensitive element for preventing hot water from being supplied to the heat exchanger 31. A setting device 38 is provided in the bathroom for switching the hot water supply destination and adjusting the temperature of the mixed hot water. In the kitchen outside the bathroom, for example, a remote control setting device 39 for relaying the start of hot water supply by remote heating, timer hot water supply, or telephone is provided.

FIG. 2 is a detailed view of a block around the mixing valve 23. A hot water side valve element 40 and a water side valve element 41, which are mixing valves 23, are provided on a shaft 42, and are driven by a motor 43 via a gear box 44.

FIG. 3 is a detailed view of the switching valve 27 block. Switching valve
27 is a valve element A47 whose both ends are regulated by a shaft 45 and urged by a spring 46
And the valve element B48 are driven by the motor 49 via the gear box 50. At the neutral point, hot water supply to hot water inlet A28 and hot water inlet B29 is stopped, hot water is supplied to hot water inlet A28 by being pushed to the left in the figure, and hot water is supplied to hot water inlet B29 by being pulled to the right. This constitutes a switching / water stoppage / flow control valve. Temperature safety valve 3 installed at hot water inlet A28
Numeral 7 is configured so that when the temperature of the wax thermo 51, which is a sensitive element, becomes equal to or higher than a set temperature (46 ° C.), the flow path is closed by the valve element 52.

FIG. 4 shows the details of the setting unit 38. shower
Curan for instructing hot water supply to 30 and Karan 31, shower switch 53, bathtub switch 54 for instructing hot water supply to bathtub, multiple switch 55 for increasing flow rate, small switch 56 for decreasing flow rate, and call switch 57 for calling others Is provided facing the front. When the curan, the shower switch 53 or the bathtub switch 54 is pressed, the hot water supply port is switched to the pressed side, and four volumes (the mixed water temperature and the flow rate previously set in the controller 36 corresponding to these switches) are set. 2 of them
One is equivalent to a hot water supply temperature presetting section ... not shown), and the hot water supply is started at a predetermined temperature set in advance. Then, when the integrated flow rate value is set in advance by the hot water amount volume 58 provided at the place covered by the lid of the setting device 38, the hot water supply is automatically stopped. When it is desired to change the preset value of the flow rate, the multiple switch 55 or the small switch 56 is operated to change the value. If the user wants to change the preset hot water temperature, the user operates the high switch 59 or the low switch 60 provided in the lid as a hot water supply temperature changing unit to adjust the temperature. 61
Is a drainage tap confirming switch, which is used for receiving a signal of the remote control setting unit 39 described later. The setting device 38 further includes a display unit 62 and a warning buzzer 63.

Note that the temperature range of the high switch 59 can be changed from water to 45 ° C when the shower switch 53 is pressed, and from 50 ° C to 45 ° C or higher when the bathtub switch 54 is pressed. Can be changed over the entire range. These controls are performed by the microcomputer provided in the controller 36 determining the side on which the switches 53 and 54 are pressed, and determining the temperature range correspondingly.

 FIG. 5 shows the details of the remote control setting device 39.

When the remote control switch 64 is pressed, the above-mentioned drain plug check switch 61 is pressed, and when hot water is not supplied by operating the setting unit 38, hot water can be supplied by the remote control.

When the time set by the timer 66 having the clock display section 65 comes, the timer switch 67 is pressed and the timer hot water can be supplied under the same conditions as the remote control switch 64. Further, the remote controller setting device 39 is provided with an HA adapter, and when a hot water supply is instructed by the telephone 69, the hot water supply can be started under the same condition as the remote control switch 64. At the time of such remote control hot water supply, timer hot water supply, and tele-con hot water supply, the hot water supply temperature automatically switches the switching valve 27 to the hot water supply port 29 side according to the setting of the hot water supply temperature volume 70 which is the hot water supply temperature setting section, and supplies hot water to the bathtub 33. Is performed. In addition, the remote controller 39 is provided with a buzzer 71 that sounds in conjunction with the call switch 57 and various display units.

FIG. 6 is a control block diagram. The mixing valve 23 receives the signals of the various switches and the volumes described above and feeds back the mixed hot water with the thermistor 24 to control the motor 43 via the adjusting unit 72. In addition, the switching valve 27 controls the motor 49 via the adjusting unit 73 by opening a designated hot water supply port according to an instruction from the caller, the shower switch 53, or the bathtub switch 54, and feeding back a signal from the flow rate sensor 25. .

The signal of the flow rate sensor 74 is further integrated by the flow rate integration section 74, and is compared with the value of the filling volume 58 to perform fixed water stoppage.

Next, the operation of this embodiment will be described. When the set switch 38 is pressed and the shower switch 53 is pressed, the switching valve 27 opens the hot water supply port A28 side where the hot water temperature ranges from water to 45 ° C., and the hot water is started at the temperature and the flow rate set in advance by the controller 36. You. The hot water supply temperature is adjusted by the mixing valve 23, and the set temperature is compared with the temperature detected by the thermistor 24 to obtain a suitable hot water. The flow rate is adjusted by the switching valve 27, and a preset flow rate and a flow rate sensor
The flow rates detected at 25 are compared to obtain an appropriate amount. To change the preset hot water temperature, the high switch 59 or the low switch 60 is operated. However, at the time of hot water with the curan and the shower switch 53, even if the high switch 59 is operated, a temperature of 45 ° C. or more cannot be set in a control manner.

If you want to change the preset flow rate,
Operate 55 or 56. If the user wants to stop hot water supply, the curan and shower switch 53 are pressed again, and the switching valve 27 closes the flow path. When the bathtub switch 54 is pressed, the switching valve 27 switches the hot water supply temperature range to the hot water supply port B29 side from hot water to hot water, and hot water is supplied at a temperature and a flow rate set in advance by the controller 36. Callan of controller 36, shower switch 53
The volume for presetting the temperature corresponding to, and the volume for presetting the temperature corresponding to the bathtub switch 54,
It can be selected within the hot water supply temperature range of hot water inlet A28 and hot water inlet B29.

In the case of hot water supply to the bathtub 33, the hot water supply is automatically stopped when the set value of the hot water volume 58 is reached. Callan,
In order to prevent forgetting to stop when operating the shower switch 53,
The hot water supply is stopped when the set value of the hot water filling volume 58 is continuously used. These quantitative water stoppages are performed by integrating the signals of the flow rate sensors 25. Bathtub when taking a bath
In the case of adding hot water for the purpose of raising the temperature of the hot water of 33, first press the bathtub switch 54 and then operate the high switch 59 to raise the set temperature to the hot water. The switching valve 27 opens the hot water supply port B29 side, and the mixing valve 23 opens the hot water side fully to supply hot water. In this state, when using the karan 31 or the shower 30 in the washing place, when the karan, shower switch 53 is pressed, the mixing valve 22 immediately changes the mixing ratio so as to have a predetermined temperature as a specific hot water temperature, The switching valve 27 is switched to the hot water supply port A28 side, and hot water is supplied at a predetermined temperature and flow rate of 45 ° C. or less. Therefore, even if the bathtub 33 is filled with hot water, the hot water remaining in the route B35 is not supplied to the curan 31 and the shower 30 and the bathtub 33 is safe. Also, in conjunction with the switch between hot water supply port A28 and hot water supply port B29,
The hot water supply temperature range can be automatically changed, making it even safer. Further, since the hot water supply target is selectively selected by the switching valve 27, the hot water is not supplied from the curan 31 and the shower 30 when the hot water is supplied to the bathtub 33. In the unlikely event that the mixture 23, the switching valve 27 and the controller 36 are to be supplied with hot water of 46 ° C. or more from the hot water supply port 28, the temperature safety valve 37 is immediately activated to supply hot water. To prevent that.

In this mixing unit 19, the route A32 and the route B
As shown in the figure, one hot water supply fitting 75 can be used. In this case, the route A32 and the route B35 are merged and connected immediately before the hot water supply fitting 75. Hot water can be supplied safely in this single location as well as in multiple locations.

As an effect of the present embodiment, first, hot water can be supplied at a preset temperature within each hot water supply temperature range according to operation of a hot water supply port setting unit such as a curan, a shower switch 53 or a bathtub switch 54, so that operation is simple. Has the effect of increasing convenience. Further, since the hot water mixing valve is used as the temperature adjusting means, there is an advantage that the temperature of the mixed hot water can be changed more quickly than that performed by the combustion control of the water heater. Further, since the switching valve 27 has a flow control function and a water stopping function in addition to the switching function, it has an effect that many valves are not required. In addition, since the hot water is supplied to the bathtub 33 in the bathroom, the cull 31 in the bathroom washing area, and the shower 30, the installation location is close and only one setting device is required.

In this embodiment, a hot water mixing valve is used as the temperature adjusting means. However, a hot water heater that controls the temperature with a water heater, for example, a water heater with a gas proportional valve may be used.

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

(1) Even if hot water is supplied to one of a plurality of hot water supplies and then to another hot water supply object, there is no danger that hot water remaining in the previously used path is supplied.

(2) One hot water supply device has a hot water supply port capable of supplying hot water in a plurality of different temperature ranges, and can supply hot water to a plurality of hot water supply targets, and a predetermined temperature is selected according to the setting of the hot water temperature change unit. Since the hot water supply port is changed within the hot water supply temperature range, hot water can be safely supplied even to a hot water supply object that does not require high-temperature hot water.

(3) The hot water supply is switched according to the setting of the hot water supply opening setting section, and the hot water supply temperature is controlled to a predetermined temperature within a different hot water supply temperature range corresponding to the selected hot water supply outlet. Is instantaneously obtained for each hot water supply port, increasing convenience, and is safe because the hot water temperature is changed within the selected hot water supply temperature range according to the setting change of the hot water temperature changing section.

[Brief description of the drawings]

FIG. 1 is a diagram of a hot water supply system using a hot water supply device according to an embodiment of the present invention, FIG. 2 is a partially cutaway sectional view showing a mixing valve block of the device, and FIG. Fig. 4, Fig. 4 is a front view of the setting device, Fig. 5 is a front view of the remote control setting device, Fig. 6 is a control block diagram of the device, and Fig. 7 is another hot water supply system to which the device is applied. FIG. 8 is a diagram of a hot water supply system using a conventional hot water supply apparatus. 23: Mixing valve (temperature control means), 27: Switching valve, 28:
Hot water supply ports A, 29 ... Hot water supply ports B, 36 ... Controller, 38 ... Setting device (hot water supply port setting section, hot water supply temperature change section).

Continuation of the front page (72) Inventor Mitsuhiko Tokumoto 1006 Kadoma, Kadoma City Matsushita Electric Industrial Co., Ltd. (56) References JP-A-61-161349 (JP, A) JP-A-59-125338 (JP, A) )

Claims (4)

(57) [Claims] A temperature control means for adjusting a hot water supply temperature; a plurality of hot water supply ports for supplying hot water having different hot water supply temperature ranges adjusted by the temperature control means; a switching valve for switching the plurality of hot water supply ports; A hot water supply port setting section for selecting a hot water supply port, a hot water supply temperature changing section for changing the hot water supply temperature setting of the temperature control means, and a hot water supply temperature at the start of hot water supply within a different hot water supply temperature range defined for each hot water supply port; A hot water temperature presetter for setting a temperature, and a predetermined temperature of the hot water temperature presetter corresponding to the selected water inlet by controlling the switching valve and the temperature adjusting means in accordance with the setting of the hot water outlet setting unit. And a controller for controlling the temperature adjusting means in accordance with the setting change of the hot water temperature changing section to change the hot water temperature within a selected hot water temperature range. 2. A hot water supply apparatus according to claim 1, wherein said temperature control means is a hot water mixing valve. 3. The hot water supply apparatus according to claim 1, wherein the switching valve has a flow rate adjusting function and a water stopping function. 4. The hot water supply apparatus according to claim 1, wherein the hot water supply objects to which the plurality of hot water supply ports are connected are a bathtub in a bathroom, a callan in a bathroom washing place, and a shower.