JPH0332705B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a hot water temperature setting device for a water heater using a two-wire signal multiplex transmission system.

(Conventional technology and problems) Conventional hot water temperature setting devices for water heaters using a two-wire signal multiplex transmission system have two remote controllers installed in the kitchen (hereinafter referred to as "main remote controller") and a remote controller installed in the bathroom (hereinafter referred to as "main remote controller"). In order to ensure safety when using the shower, the water temperature can be set from either the main remote controller or the fluoro remote controller, which allows priority switching. Usually, a switch is provided.

With this configuration, the transmitting/receiving circuit of the water heater main body outputs the hot water temperature setting data from the prioritized remote control to the water heater main control circuit based on the priority switching data from the flow remote controller, and measures the safety when using the shower. It's on.

However, if the main remote controller is not connected and only the Flo remote controller is connected, and if you accidentally switch the priority switch of the Flo remote controller to the main remote controller, the main unit's transmitter/receiver circuit will not be able to receive the hot water temperature setting data. There is a problem that temperature control becomes uncontrolled.

(Objective of the Invention) The present invention solves the above-mentioned problem by determining whether or not a floating remote controller is connected alone using the transmitting/receiving circuit of the main unit, and when only the floating remote controller is connected independently, priority switching data is transmitted regardless of the switching state of the priority switching switch. I tried to solve the problem by forcibly fixing the settings on the Flo remote control side.

(Example) Fig. 1 shows an example of the application to a water heater with a bath pot, in which 1 shows a bath pot 3 that heats bath water while forcedly circulating it with a pump 2, and a bath pot 3 that controls the hot water supply temperature to a set temperature. This is a main body of a water heater with a bathtub having a proportional control type water heater 4. 5 is a main remote control installed in the kitchen, 6 is a floor remote control installed in the bathroom, and these remote controllers 5 and 6 are connected to the main unit 1.
It is connected to a transmitting/receiving circuit 8 by a two-wire signal line 9. Reference numeral 10 denotes a control circuit that controls the bathtub 3 and water heater 4 based on data from the transmitter/receiver circuit 8 . 1
1 is a transmitting/receiving circuit provided in each remote control, 12 is a display section, and 13 is an operation section.
3 has an operation switch 14 and a hot water temperature setting switch 15.
A priority changeover switch 16 is provided only on the flow remote controller 6.

FIG. 2 is an explanatory diagram showing the processing procedure of signal data in the transmitting/receiving circuit 8 of the main body 1, and FIG. 3 is an explanatory diagram showing the contents of the main part of the signal data to be transmitted and received. The signal data consists of 2-bit address data and 1
Consists of 1-bit priority switching data, 4-bit hot water temperature setting data, and 1-bit operation signal data, and the address data is "01" for the main remote control, "00" for the main remote control, "10" for the sub remote control (not shown),
"11" is assigned to the main unit, priority data is set to "0" for the remote controller, "1" for the main remote controller, and the signal transmission and reception is as follows.

That is, when the priority switching switch 16 of the fluoro remote control 6 is switched to switch the hot water temperature setting priority to the main remote controller, a signal with the priority switching data set to "1" shown in FIG. The data is transmitted to the main body 1 side, and after confirming that the above three received data 17a match, the main body 1 side sets the reception confirmed data 18a and the priority switching data of the transmission data 20 from "0" to "1", and then the transmission is performed. The data 20 is transmitted to the main remote controller 5 side, the priority switching data of the main remote controller 5 is set from "0" to "1", and is sent back to the main unit 1 side. On the main unit 1 side, the three received data 1 are received in the same way as above.
7b, the priority switching data of the reception confirmation data 18b is set from "0" to "1". The reception confirmation unit 19 receives the reception confirmation data 18a, 1.
By matching the priority switching data of 8b, the hot water temperature setting data set with the main remote controller 5 is confirmed as the data 2.
1 to the control circuit 10, and the water heater 4 supplies hot water according to the hot water temperature setting of the main remote controller 5.

By the way, in the above transmission/reception, when power is supplied to the main body 1, polling transmission/reception is performed from the transmitting/receiving circuit 8 of the main body 1 to each remote controller, and a memory is provided for each remote controller to store the address of the remote controller at the time of reception from the remote controller. For example, if a signal with "00", which is the address data of the Flo remote controller 6, is received when sending/receiving to the Flo remote controller 6, "00" is set in the memory for the Flo remote controller 6, and reception from the main remote controller 5 is disabled. When there is, "01" is set, and when there is no reception, "11" is set.

Then, as shown in the flowchart shown in FIG. 4, the transmitting/receiving circuit 8 judges whether the connected remote controller is only the floating remote controller 6 or not from the contents of the memory, F1, and if the connected remote controller is only the floating remote controller 6, then Priority switching data is “0” indicating Flo remote controller 6 priority.
F2 is fixed at F2, and F3 is set to always output the hot water temperature setting data of the flow remote controller 6 regardless of the state of the priority changeover switch 16. And the connected remote controllers are Flo remote controller 6 and main remote controller 5.
In this case, as described above, the hot water temperature setting data of F4, the flow remote controller 6, or the main remote controller 5 is output depending on the contents of the priority switching data.
5, F6.

(Effects of the Invention) Therefore, as described above, according to the present invention, it is determined whether or not the remote controller connected to the main body is a floating remote controller alone, and if the connected remote controller is a floating remote controller alone, Since the priority switching data is fixed on the flow remote control side, it is possible to prevent the inconvenience of the hot water temperature control becoming uncontrolled even if the priority switching switch is operated incorrectly.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is an overall configuration diagram, FIG. 2 is an explanatory diagram showing transmission and reception in the main body transmitting/receiving circuit, FIG. 3 is an explanatory diagram of signal data, and FIG. 4 is a main body transmitting/receiving circuit. FIG. 2 is a control flow diagram of FIG. 1...Water heater main body, 5...Main remote control, 6...Flow remote control, 8...Transmission/reception circuit, 9...Two-wire signal line,
10... Control circuit, 15... Hot water temperature setting means (switch), 16... Priority switching means (switch).

Claims (1)

[Claims] 1. The main remote controller and the main remote controller, which have the transmitting/receiving circuit of the water heater body and the hot water temperature setting means, can be connected to each other using two-wire signal lines, and the floating remote controller has a priority switch for switching the hot water temperature setting between the two remote controllers. A switching means is provided, and the transmitting/receiving circuit receives the priority switching data set by the operation of the priority switching means and transmitted from the flow remote controller, and selects the hot water temperature setting data transmitted from the remote controller prioritized by the priority switching data. For output to the control circuit of the main body, the transmitting/receiving circuit is provided with a means for receiving the address data from each remote controller when power is supplied and determining whether or not a floating remote controller is connected alone. A hot water temperature setting device for a water heater characterized by forcibly fixing priority switching data on the flow remote control side.