Abstract: A service method of gas appliances includes: Detecting the gas appliances at the client ends to generate detecting signals. Transmitting the detecting signals to a service end. Identifying which client end the detecting signals come from. Examining the detecting signals to find whether the gas appliance has an abnormal condition; and informing the client end when the abnormal condition is found. After all, the service end may monitor the gas appliances at the client end, and inform the client for repair when the gas appliance has detected an abnormal signal or has damaged parts.

Abstract: A method of controlling combustion of a gas appliance includes the following steps: a) Read a first burning data in a database; b) Burn gas according to the first burning data; c) Obtain a burning efficiency of the gas appliance; and d) Compare the burning efficiency with a predetermined value, and repeat the step b to the step d when the burning efficiency is higher than the value, or read a second burning data in the database and burn gas according to the second burning data when the burning efficiency is lower than the value. The present invention provides plural stages of burning according to the main component of the gas to be burned to increase the total burning efficiency.

Abstract: The present invention provides a humidity sensor including a first conductor, a second conductor, a power supply unit, and a current sensing unit. The first and the second conductors are separated from each other for a predetermined distance and are placed at a predetermined place. The power supply unit supplies high voltage to the first conductor, and the current sensing unit senses a change of current in the conductor and generate a signal in association with the change of the current. Therefore, the humidity sensor may operate in any environment, such as high temperature and high pressure.

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 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 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 water heater includes a remote controller having a setting unit and a display unit; an electronic heater having a circuit board, a combustor, and a sensing unit, wherein the sensing unit reads the electronic heater; and an exchanger having a first transmitter, a first receiver, and a first converter electrically connected to the remote controller, and a second transmitter, a second receiver, and a second converter electrically connected to the electronic heater. The first transmitter transmits a signal from the setting unit to the circuit board through the second receiver, to control the electronic heater according to the signal, and the second transmitter transmits signal from the sensing unit to the first receiver of the remote controller, to show real-time information of the electronic heater on the display unit.

Abstract: A water heater includes a case, in which a hot source, a cold source, a thermoelectric cooling chip, and a power requiring unit are provided. The thermoelectric cooling chip has a close loop with a hot junction adjacent to the hot source; and a cold junction adjacent to the cold source, that the thermoelectric cooling chip generates a current through the close loop when a temperature at the hot junction, is higher than a temperature at the cold junction. The power requiring unit is electrically connected to the close loop of the thermoelectric cooling chip; therefore, the power requiring unit may be driven by the power from the thermoelectric cooling chip, when the main power is low or off.

Abstract: A service method of gas appliances includes: Detecting the gas appliances at the client ends to generate detecting signals. Transmitting the detecting signals to a service end. Identifying which client end the detecting signals come from. Examining the detecting signals to find whether the gas appliance has an abnormal condition; and informing the client end when the abnormal condition is found. After all, the service end may monitor the gas appliances at the client end, and inform the client for repair when the gas appliance has detected an abnormal signal or has damaged parts.

Abstract: A metal oxide semiconductor structure and a production method thereof, the structure including: a substrate; a gate electrode, deposited on the substrate; a gate insulation layer, deposited over the gate electrode and the substrate; an IGZO layer, deposited on the gate insulation layer and functioning as a channel; a source electrode, deposited on the gate insulation layer and being at one side of the IGZO layer; a drain electrode, deposited on the gate insulation layer and being at another side of the IGZO layer; a first passivation layer, deposited over the source electrode, the IGZO layer, and the drain electrode; a second passivation layer, deposited over the first passivation layer; and an opaque resin layer, deposited over the source electrode, the second passivation layer, and the drain electrode.

Abstract: The present invention provides a remote control system that includes at least a gas appliance; a repeater, and a remote control device. The gas appliance is connected to the repeater through a Zigbee transmission, and the remote control device is connected to the repeater through a network (internet or telecommunication network). User inputs a command at the remote control device, and the remote control device transmits the command to the repeater through the network, and then the repeater will control the gas appliance according to the command. The gas appliance is provided with sensors to detect data in regards to the gas appliance. The data is transmitted to the remote control device and shown on a screen through the repeater and the network.

Abstract: The present invention provides a method of testing gas supply of a gas appliance, which includes the steps of: monitoring a flow rate of a gas flow through a gas regulator of a pipeline to have a detected gas flow rate; comparing the detected gas flow rate with the ideal range of gas flow rate; and providing an alarm when the detected gas flow rate exceeds the ideal range of gas flow rate. The present invention further provides a compensating method when an abnormal condition is detected. The compensating method will change the gas flow rate or the air flow rate to get a proper air fuel ratio of the mixed gas.

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 backup power supply system of a water heater includes a power transforming device and a controller. The power transforming device generates a DC current with an initial voltage through sensing the temperature change under a low battery condition. The controller examines the initial voltage of the DC current and gives command to which device to supply power to the water heater or to amplify the initial voltage of the DC current for maintaining the water heater's normal work.

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.

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.