JPH0439516A - Wireless remote control hot water supply machine - Google Patents

Abstract

PURPOSE:To make it possible to prevent malfunctions, even if electromagnetic wave noises from an igniter affect electric wave signals for transmitting- receiving by forbidding transmitting-receiving operations during operating the igniter to ignite a burner. CONSTITUTION:Transmitting-receiving measures 3 controls transmitting-receiving operations by commands from main control measures 5. The transmitting- receiving operations are forbidden within the time T1 including during igniting operation at least. And the main control measures 5 transmits to the remocon 2, prior to the igniting operation, the ignition-starting signal 10 that a communication is stopped till the ignition ends as the igniting operation begins from now on. The remocon 2 is forbidden to transmitting signals to a gas hot water supply machine body 1 during the time T2 from receiving the ignition start signal 10 to receiving the ignition end signal 11 transmitted after the ignition end. Thus, it can be prevented that the communication is affected by electromagnetic wave noises emitted from the igniter because transmitting-receiving operations are forcibly stopped during igniting.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a domestic water heater, such as a gas water heater or an oil boiler, equipped with a wireless remote controller for remote control using radio waves.

BACKGROUND OF THE INVENTION Conventional water heaters of this type include, for example, the
There is a publication No. 77671. In other words, the idea was to improve operability and safety by remotely controlling the burner in the water heater body from a wireless remote control, and by returning pilot and burner status n-pressure signals from the water heater body to the remote control.

Problems to be Solved by the Invention However, in the configuration of such a conventional wireless remote control water heater, no measures have been taken to prevent the influence of electromagnetic noise emitted from the igniter when igniting the burner on radio communication. do not have.

In order to put this type of wireless remote control water heater into practical use, a major challenge is how to prevent the noise emitted when the burner is ignited from affecting communication.

The present invention solves such conventional problems, and aims to provide a highly reliable wireless remote control water heater that does not malfunction or malfunction due to electromagnetic noise emitted when the burner is ignited.

Means for Solving the Problems In order to solve the above problems, the wireless remote control water heater of the present invention includes a transmitting/receiving means for communicating with a remote control using radio waves, and a means for transmitting water through a heat exchanger. A burner for heating, an igniter for igniting the burner, a combustion detection means for detecting the combustion state of the burner, and effective control of these based on a predetermined procedure, and ignition by the igniter. The apparatus is provided with main control means for stopping the transmission and reception operations by the transmission and reception means during operation.

Further, the main control means of the present invention is configured to transmit an ignition start signal and an ignition end signal to the remote controller via the transmitting/receiving means before starting the ignition operation by the igniter and after ending the ignition operation. It is something.

Further, the main control means of the present invention is configured to drive the delivery reception means immediately before the ignition operation by the igniter to continuously send out radio wave signals.

According to the above-described structure, the present invention prevents communication from being affected by electromagnetic noise emitted from the igniter during ignition by forcibly stopping the transmitting and receiving operations while the burner is ignited.

Also, before igniting the igniter, transmit an ignition start signal to the remote controller and notify the remote controller of the reason for stopping communication until ignition is completed, thereby prohibiting signal transmission from the remote controller during ignition operation. becomes possible.

In addition, just before the igniter is activated, the transmitting/receiving means of the water heater starts emitting a radio wave signal and continues until the ignition is finished, which prevents electromagnetic noise from being transmitted because the remote control cannot transmit while this radio signal is being emitted. It is possible to prevent the impact on

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

FIG. 1 is a schematic block diagram of an embodiment of the wireless remote control type gas water heater of the present invention. 1 is the main body of the gas water heater, 2 is the remote controller, and control signals and status monitor signals between them are transmitted via radio waves. This is a configuration that can be performed wirelessly.

3 is a transmitting/receiving means, which communicates with the remote control via an antenna 4; 5 is a main control means, which controls the entire main body of the gas water heater effectively based on a predetermined procedure set in advance; This is usually achieved through microcomputer program control. A burner 6 burns the supplied gas and heats the water supplied via the heat exchanger 7. 8 is an igniter, and main control means 5
The burner is ignited based on the command. Since the igniter 5 normally ignites by causing a spark discharge, it has the property of emitting electromagnetic noise over a very wide frequency band, which becomes noise that interferes with radio communication.

Reference numeral 9 denotes a combustion detection means for detecting the end of ignition, and a flame rond or the like is usually used.

Next, based on such a configuration, the operation of the present invention will be explained in the second to second steps.
This will be explained with reference to FIG.

FIG. 2(a) shows the timing at which the transmitting/receiving means 3 is controlled in its transmitting/receiving operation by a command from the main control means 5, and as is clear from the relationship with the ignition operation in FIG. 2(b), at least during the ignition operation. Transmission/reception operations are prohibited during the T1 time period including T1.

FIG. 3(a) shows the timing of transmission from the gas water heater body 1 to the remote controller 2, where 10 is an ignition start signal and 11 is an ignition end signal. That is, prior to the ignition operation, the main control means 5 transmits an ignition start signal 10 to the remote control 2 indicating that since the ignition operation will start, communication will be stopped until the ignition is completed. Therefore, the remote control 2 is
Transmission to the gas water heater main body 1 is prohibited during a time T2 from receiving the ignition start signal 10 to receiving the ignition end signal transmitted after ignition ends.

FIG. 4(a) shows the timing at which the gas water heater main body 1 continuously emits a predetermined radio signal to the remote controller 2 during the time T from just before the ignition operation until the ignition is completed.
As shown in the relationship with the timing of the ignition operation in b), the remote control 2 has a receiving means as well as a transmitting means, and when transmitting from the remote control 2, it is checked whether or not a radio signal is emitted from another source. It is designed to immediately emit its own transmission signal if it is not present, and to wait until it is no longer present if it is present. Therefore, while the aforementioned gas water heater main unit 1 is constantly emitting radio signals during the ignition operation, the remote control 2 cannot transmit to the gas water heater main unit 1, and the electromagnetic wave noise emitted from the igniter 8 It is possible to prevent any influence on communication operations.

Effects of the Invention As described above, the wireless remote control water heater of the present invention provides the following effects.

(1) By configuring a structure that prohibits transmission and reception while the igniter is operating to ignite the burner, even if electromagnetic noise emitted from the igniter may affect the radio signals for transmission and reception, malfunctions or malfunctions may occur. It is possible to prevent the operation from occurring.

(2) Before operating the igniter, an ignition start signal is sent from the water heater main unit to the remote control, and when the ignition operation is completed, an ignition end signal is sent. Since communication can be prevented while electromagnetic noise is being generated, malfunctions and non-operations can be prevented.

(3) Immediately before activating the igniter, the water heater unit emits a predetermined radio wave to the remote control, and by continuing to do so until the ignition is finished, the remote control cannot transmit signals while this radio wave is being emitted. , it is possible to prevent the effects of magnetic noise.

[Brief explanation of drawings]

FIG. 1 is a schematic block configuration diagram of an embodiment of the wireless remote control water heater of the present invention, FIG. 2 is a partial operation timing diagram of the device, and FIG. 3 is a partial operation timing diagram of the device.
FIG. 4 is a timing diagram of another part of the operation of the same device. 1...Gas water heater body, 2...Remote controller, 3...Transmitting/receiving means, 4...Antenna, 5...Main control means , 6... burner, 7... heat exchanger, 8... igniter, 9
... Combustion detection means. Name of agent: Patent attorney Shigetaka Awano

Claims (3)

[Claims] (1) Transmission/reception means for communicating with a remote control using radio waves, a burner for heating water via a heat exchanger, an igniter for igniting this burner, and combustion of the burner The main control means includes a combustion detection means for detecting the state and a main control means for effectively controlling them based on a predetermined procedure, and the main control means controls the transmission and reception by the transmission and reception means during the ignition operation by the igniter. A wireless remote control water heater configured to stop operation. (2) A patent claim in which the main control means is configured to transmit an ignition start signal and an ignition end signal to the remote controller via a transmitting/receiving means before starting the ignition operation by the igniter and after ending the ignition operation. A wireless remote control water heater according to item 1. (3) A transmitting/receiving means for communicating with a remote control using radio waves, a burner for heating water via a heat exchanger, an igniter for igniting the burner, and a combustion state of the burner. and a main control means for effectively controlling them based on a predetermined procedure, the main control means driving the transmitting/receiving means immediately before the ignition operation by the igniter. A wireless remote control water heater configured to continuously emit radio signals.