Abstract: A method of setting an exclusive controller for a water heater, wherein a plurality of controllers are provided for user to operate to control a water heater, includes the steps of: a) Provide each controller an identification code, and saving the identification codes of the controllers in a processor of a water heater; b) Input a command through a controller, and sending the command to the processor of the water heater, wherein the command includes the identification code of the controller; c) Make a recording that the controller is an exclusive controller when the identification code in the command is identical to the identification code in the processor; d) Execute the command from the exclusive controller to control the water heater, and rejecting commands from the other controllers; and e) Repeat the step d until the recording of the exclusive controller is canceled.

Abstract: A gas control valve includes a base, a stop device, a driving device. The base has a gas passageway therein for gas to flow therethrough. The stop device is provided in the base to be moved between a first position, in which the stop device narrows the gas passageway to allow a first gas flow flowing through the base, and a second position, in which the stop device allows a second gas flow flowing through the base, wherein the second gas flow is greater than the first gas flow. The driving device is controllable to move the stop device between the first position and the second position. Therefore, the gas control valve of the present invention may adjust the gas flow.

Abstract: A water heater includes a water pipe form by bending a pipe. The entire water pipe leans related to a vertical plane to expose all the section to a burner thereunder. All the sections of the water pipe lean downwards related to a horizontal plane. It will make the water in the water in the water pipe flows backwards when no water is supplied to the water heater. Therefore, there will never be water remaining in the water pipe to get rid of the jam problem.

Abstract: An adjustable gas electromagnetic valve includes a valve body having an inlet, an outlet, and two gas passage, which are a first gas passageway and a second gas passageway between the inlet and the outlet. In the first gas passageway, a gate member and an actuator are provided. The actuator is activated by electrical signals to move the gate member so as to open or close the first gas passageway. As a result, a gas flow provided by the gas electromagnetic valve is adjustable by controlling the actuator.

Abstract: A gas appliance has a security device and a combustor. The security device has a gas valve, a thermocouple, and a controller. The thermocouple receives a heat of the combustor and generates thermoelectric potential accordingly. The controller controls the gas valve according to the thermoelectric potential. While the thermoelectric potential is lower than a high level, the controller controls the gas valve to reduce the gas supplied to the combustor, and while the thermoelectric potential is lower than a low level the controller controls the gas valve to stop the gas supplied to the combustor to avoid the incomplete burning because of insufficient oxygen.

Abstract: A heating system includes a gas appliance and at least a remote control device and a communication between the gas appliance and the remote control device is via an AC power line. When a user input a command through the remote control device, a command signal is modulated and sent to the AC power line. A controller of the gas appliance receives the modulated command signal through the AC power line, and demodulates it to control the gas appliance accordingly. On contrary, a working signal generated by the gas appliance is modulated and sent to the AC power line. The remote control device receives the modulated working signal through the AC power line, and demodulates it to show the related message on a screen.

Abstract: A combustor assembly of a water heater, which is provided between an air blower and a burner set to guide air from the air blower to the burner set, includes a first board, a second board and a third board stacked in sequence. Between the first board and the second board there is a first chamber and a first port, and between the second board and the first board there is a second chamber and a second port. The second board and the third board both have apertures. These boards restrict and divide an air flow of the air blower to flow along several paths to increase heat efficiency.

Abstract: A temperature-controllable gas grill includes a base, a cover, a gas valve, several burners, and a temperature controlling device. The cover is provided on the base to form a grilling chamber between the base and the cover. The gas valve is connected to the gas pipe. The burners are provided in the base and are connected to the gas valve. The temperature controlling device includes a gas controller, a temperature sensor, and a main controller. The temperature sensor senses a temperature in the grilling chamber and provides a temperature signal accordingly. The main controller is electrically connected to the temperature sensor to receive the temperature signal. The main controller changes a gas flow supplied to the burners according to the temperature signal to control the temperature in the grilling chamber to control the temperature in the grilling chamber.

Abstract: A gas fireplace includes a gas valve, a combustor, and a gas controlling device between the gas valve and the combustor. The gas controlling device has a body, a solenoid valve, and a main controller. The body has a first port, a second port, a first passage, and a second passage, wherein the first passage and the second passage respectively connect the first port to the second port. The solenoid valve is provided in the first passage to be controlled to open and close the first passage. The main controller alternately turns the solenoid valve on and off so as to repeatedly open and close the first passage. Therefore, the gas controlling device provides a variable gas flow to the combustor to reduce the total gas consumption and the user will not be aware of the change of the flames.

Abstract: A method of setting an exclusive controller for a water heater, wherein a plurality of controllers are provided for user to operate to control a water heater, includes the steps of: a) Provide each controller an identification code, and saving the identification codes of the controllers in a processor of a water heater; b) Input a command through a controller, and sending the command to the processor of the water heater, wherein the command includes the identification code of the controller; c) Make a recording that the controller is an exclusive controller when the identification code in the command is identical to the identification code in the processor; d) Execute the command from the exclusive controller to control the water heater, and rejecting commands from the other controllers; and e) Repeat the step d until the recording of the exclusive controller is canceled.

Abstract: A combustor of a water heater includes a burner member and a flame cover. The burner member has a passageway therein with an inlet and an outlet. The flame cover has a plurality of flame holes. The character of the present invention is that the burner member is provided with a room at a top thereof communicated with the passageway. A separating device is put in the room, and the flame cover is connected to the burner member to cover the separating device The separating device has a main outlet and two side outlets right under the flame holes of the flame cover to generate main flames and side flames respectively.

Abstract: The present invention provides a method of detecting water heater safety, wherein the water heater includes a blower and a combustor. The method includes starting the blower and detecting blower speed after a certain amount of time; comparing the blower speed with a first speed range, and then supplying gas to the combustor when the speed of the blower is within the first speed range, or providing an alarm when the blower speed is beyond the first speed range; detecting the speed of the blower again after the combustor heats water for a time; comparing blower speed with a second first speed range, and then supplying gas to the combustor when the blower speed is within the second speed range, or stopping gas when the blower speed is beyond the second speed range.

Abstract: The present invention provides a pressure gauge for measuring a pressure of a source. The pressure gauge includes a case, a flexible film, a magnetic device, a coil, a processor, and a screen. The case has a bore connecting the source. The coil is provided in the case. The flexible film is provided on an inner side of the case to cover the bore that the flexible film is expandable by the pressure of the source. The magnetic device is received in the case to be moved relative to the coil by the flexible film. The movement of the magnetic device causes the coil to generate an induced electromotive force, and the processor may find the gas pressure according to the induced electromotive force, and show it on the screen.

Abstract: The present invention provides a water heater, including a combustor, a gas pipe, a combustion controller, a pressure gauge, and a controller. The gas pipe supplies the combustor gas. The combustion controller controls combustion of the combustor. The pressure gauge detects a gas pressure in the gas pipe and generates an electrical signal in association with the gas pressure. The controller is electrically connected to the gas gauge and the combustion controller to receive the electrical signal from the gas gauge and controls the combustion controller according to the electrical signal to adjust the combustion of the combustor. In addition, the present invention further provides a method of controlling the water heater.

Abstract: The present invention provides a pressure detecting circuit, which is electrically connected to a coil to receive an induced electromotive force from the coil, including a movement detecting unit electrically connected to the coil to receive the induced electromotive force from the coil and find a distance of the movement of the magnetic device according to the induced electromotive force; and a converting unit electrically connected to the movement detecting unit to generate the voltage signal to indicate the distance. In addition, the present invention further provides a pressure gauge incorporated with the pressure detecting circuit.

Abstract: A method for examining water heater safety includes the steps of: setting a desired temperature and sensing a cold water temperature and a flow rate of water to calculate a theoretical gas consumption, and then supplying a combustor the theoretical gas consumption to heat water; sensing a hot water temperature, and calculating a temperature ratio by the desired temperature, the cold water temperature and the hot water temperature. Examining the temperature ratio may find that the water heater is abnormal or malfunctioning. An efficiency ratio may also be calculated by the theoretical gas consumption and the actual gas consumption. Examining the efficiency ratio may find that the water heater is abnormal or malfunctioning as well.

Abstract: A method for examining water heater safety includes the steps of: setting a desired temperature and sensing a cold water temperature and a flow rate of water to calculate a theoretical gas consumption, and then supplying a combustor the theoretical gas consumption to heat water; sensing a hot water temperature, and calculating a temperature ratio by the desired temperature, the cold water temperature and the hot water temperature. Examining the temperature ratio may find that the water heater is abnormal or malfunctioning. An efficiency ratio may also be calculated by the theoretical gas consumption and the actual gas consumption. Examining the efficiency ratio may find that the water heater is abnormal or malfunctioning as well.

Abstract: A water heater includes a combustor, a gas valve, a blower, a detector, and an operating device. The detector senses a speed of a motor of the blower.

Abstract: A temperature controlling device includes a setting controller, a gas valve, a burner, an inlet temperature sensor, a water meter, and an operational controller. User sets a desired temperature via the setting controller. The inlet temperature sensor senses an inlet temperature of water at an inlet of a pipe, and then operational controller calculates a difference between the inlet temperature and the desired temperature to get a total heat for heating water in a predetermined heating time and transfer the total heat into a total gas consumption, and controls the gas valve to supply gas to the burner with an amount of the total gas consumption in a predetermined heating time. After that, water should be heated to the desired temperature, and the operational controller controls the gas valve to decrease the gas supply for maintaining water temperature.

Abstract: A combustor of a water heater includes a burner member and a flame cover. The burner member has a passageway therein with an inlet and an outlet. The flame cover has a plurality of flame holes. The character of the present invention is that the burner member is provided with a room at a top thereof communicated with the passageway. A separating device is put in the room, and the flame cover is connected to the burner member to cover the separating device The separating device has a main outlet and two side outlets right under the flame holes of the flame cover to generate main flames and side flames respectively.