JPH0144976B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention has a remote controller having a plurality of faucets, a hot water temperature setting section and a hot water temperature switching section corresponding to each of the faucets, and a hot water temperature switching section. This invention relates to a water heater that performs heating control based on the set temperature of the hot water temperature setting section, which is prioritized by the hot water temperature setting section.

Conventional configurations and their problems In recent years, we are entering an era in which each family's lifestyle is enriched and they express their individuality. Along with this, hot water supply equipment has diversified, the number of hot water supply locations has increased, and hot water supply systems have also become more complex and diverse. machine is requested.

FIG. 1 is an overall configuration diagram of such a conventional water heater, which has two faucets and a hot water temperature setting section.

In FIG. 1, 1 is a heating energy controller 2a.
Water is heated by a heating device 2 having a water faucet 3, 4.
Remote controllers 5 and 6 are installed near each faucet 3 and 4, respectively. 7 is a control unit that has a hot water temperature detection device 8 that detects the hot water temperature and sets the hot water temperature in response to signals from the remote controllers 5 and 6; Start heating. The remote controllers 5 and 6 are provided with hot water temperature setting sections 9 and 10, respectively, and the remote controller 6 is further provided with a changeover switch 11 for preferentially selecting the set temperature of the hot water temperature setting sections 9 and 10. . Each faucet 3, 4 is supplied with hot water at a set value selected by the changeover switch 11.

In this way, the hot water supply temperature is determined by the changeover switch 11, so for users of the faucet 3 on the remote controller 5 side that does not have the changeover switch 11, the hot water supply temperature will change depending on the selection of the changeover switch 11. In some cases, hot water is supplied, and there is a risk of being exposed to hot water when using a shower.

In addition, when there are three or more hot water temperature settings, the circuit configuration becomes extremely complex if multiple switches are used, and a lot of wiring is required, making construction time-consuming. This method has disadvantages such as easy wiring errors.

Purpose of the Invention The present invention has been made in view of the above-mentioned drawbacks of the conventional hot water temperature setting section. To provide a water heater equipped with a plurality of remote controllers that can always safely supply hot water without unexpectedly supplying hot water higher than the above temperature.

Structure of the Invention In order to achieve the above object, a water heater equipped with a plurality of remote controllers according to the present invention exchanges heat of water with a plurality of remote controllers having a hot water temperature setting section and a hot water temperature switching section. A control unit that controls the heating device, including a heat exchanger, a heating energy controller that controls supply of heating energy, a heating device that supplies heating energy to the heat exchanger, and a hot water temperature detection device that detects the temperature of hot water. and a water heater having a hot water temperature setting section, the control section selects one hot water temperature setting section based on the output signal of the hot water temperature switching section from the remote controller, and when the output signal of the hot water temperature switching section changes, a new hot water temperature setting section is selected. It is configured to include a hot water temperature selection section that gradually approaches the set temperature of the selected hot water temperature setting section.

With this configuration, even if the hot water temperature setting of another hot water temperature setting section changes during hot water supply, the hot water supply temperature does not suddenly change and gradually reaches the new set temperature.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is an overall configuration diagram of a water heater equipped with a plurality of remote controllers according to an embodiment of the present invention.

In Fig. 2, 1 is a heat exchanger, 2 is a heating device,
Reference numeral 2a denotes a heating energy controller which has the same configuration as that in FIG. 12,1
3 is a hot water temperature setting unit 1 for setting the hot water temperature with a remote controller provided corresponding to the faucets 14 and 15, respectively;
6,17. The remote controller 13 is also provided with a changeover switch 18 for preferentially selecting temperature settings. Reference numeral 19 denotes a control unit equipped with a microcomputer that controls the hot water temperature using output signals from the remote controllers 12 and 13, and includes means for realizing the functions of set temperature input means, set temperature selection means, temperature gradual increase means, and heating control means. have.

Next, the transmission of signals between the control section 19 and each of the remote controllers 12 and 13 will be explained in detail using FIG. 3.

In FIG. 3, the same members as those in FIG. 2 are given the same numbers and their explanations will be omitted. Reference numerals 20 and 21 are analog-to-digital converters that convert the analog values of the set temperatures of the respective hot water temperature setting units 16 and 17 into digital values, and input the respective digital values to the respective remote control units 22 and 23. Further, each remote control unit 22, 23 is provided with an address number, and the remote control unit 23 is provided with a hot water priority, which is sent to the control unit 19 by the transmission control units 24, 25 together with the set temperature. .

On the other hand, the control unit 19 receives signals sent from the remote controllers 12 and 13 all at once at the transmission control unit 26, selects the remote controller to be prioritized from the received signals, and sets each of the hot water temperature setting units 16 and 17. It detects the temperature value and performs heating control based on the prioritized temperature setting of the remote controller.

The operation of the water heater equipped with a plurality of remote controllers configured as described above will be described below.

FIG. 4 is a flowchart showing the heating control of the water heater achieved by the control section 19.

In FIGS. 2 and 4, first, the set temperature input means inputs data such as set temperature, priority selection, and remote controller number from each remote controller 12, 13. Based on the input data, the set temperature selection means selects the hot water temperature setting section to be prioritized and sets the temperature. In other words, after determining the presence or absence of hot water supply, which is started by opening the faucet, if hot water is being supplied, the selector switch 18 is turned on.
If the hot water is not being supplied, enter the data again.

Next, in the set temperature gradual increase means, when the selection of the changeover switch 18 changes from before, the difference between the set temperature before and after the selection is calculated, and if the set temperature is higher than before, the previous set temperature is changed to the set temperature difference at each step. Accordingly, increase the temperature little by little to bring it closer to the set temperature, and if it is lower than before, lower the set temperature immediately.

Finally, the heating control means controls the hot water supply temperature using the set temperature obtained as described above.

In addition, in FIG. 4, the set temperature of the hot water temperature setting section selected by the changeover switch 18 is substituted for VR _p , and VR _o-1
is the preset temperature before selection, VR _o is the preset temperature after selection, VR is a heating control means that indicates the actual hot water temperature, and the temperature gradual increase means gradually increases the value of VR after selection. The temperature will approach the set temperature VR _o .

In addition, in this example, the number of steps NST (for example, 50)
Since we are calculating the temperature increase in one step using
The time it takes to reach the set temperature VR _o after selection is determined by the number of steps and is constant, but the temperature that will rise in a certain period of time is determined in advance using that temperature.
You can also keep it close to VR _o . In this case, the time required to reach the set temperature VR _o will change depending on the difference between the set temperatures before and after selection. In addition, selector switch 1
8 is in the same state as before, the set temperature is used as is for the heating control means, but it goes without saying that in this case also, heating control may be performed using the temperature gradual increase means.

In this way, in the water heater equipped with a plurality of remote controllers according to an embodiment of the present invention, when the set temperature changes due to the selection of the changeover switch 18, the water temperature does not change immediately and the new setting is changed. Since the temperature is gradually changed, the hot water temperature is changed preferentially by the changeover switch 18, and hot water higher than the set temperature is not unexpectedly supplied, and the hot water user can adjust the temperature change in advance. Because you can know this, you can always receive safe hot water supply.

Furthermore, the user can know the change in hot water temperature in advance and receive safe hot water supply, making it extremely convenient to use.

Effects of the Invention As described above, the water heater equipped with a plurality of remote controllers of the present invention has the following effects.

(b) The hot water temperature changes preferentially depending on the selection of the switching part, and in some cases, the hot water temperature changes gradually without being suddenly supplied with hot water higher than the set temperature, making it easier to use hot water. Users can know the change in hot water temperature in advance and can always receive safe hot water supply.

(b) It is extremely easy to use because you can know the change in hot water temperature in advance and always receive safe hot water supply.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram of a conventional water heater, FIG. 2 is an overall configuration diagram of a water heater equipped with a plurality of remote controllers according to an embodiment of the present invention, and FIG. 3 is a configuration diagram of the same essential parts. 4
The figure is a flowchart showing heating control of the water heater. DESCRIPTION OF SYMBOLS 1... Heat exchanger, 2... Heating device, 2a... Heating energy controller, 8... Hot water temperature detection device, 12, 13... Remote controller, 16, 17... Hot water temperature setting part, 18... Changeover switch, 19... Control Department.

Claims (1)

[Claims] 1. A plurality of remote controllers having a hot water temperature setting section and a hot water temperature switching section, a heat exchanger that exchanges heat with water,
A heating energy controller that controls the supply of heating energy, a heating device that supplies heating energy to the heat exchanger, a hot water temperature detection device that detects the temperature of hot water, and a control unit that controls the heating device. The control section selects one hot water temperature setting section based on the output signal of the hot water temperature switching section from the remote controller, and when the output signal of the hot water temperature switching section changes, the control section selects the newly selected hot water temperature setting section based on the output signal of the hot water temperature switching section from the remote controller. A water heater equipped with a plurality of remote controllers having a hot water temperature selection section that gradually approaches the set temperature of the temperature setting section.