Abstract: An ignition controlling device of a gas appliance includes a high-voltage provider, a controller, and a flame sensor. The gas appliance includes an ignition electrode and a burner, and the ignition electrode is beside burner. The high-voltage provider has an output terminal, and the output terminal is electrically connected to the ignition electrode to provide high-voltage pulses to the ignition electrode. The controller controls the high-voltage provider to provide the high-voltage pulses. The flame sensor is electrically connected to the output terminal of the high-voltage provider to detect a flame around the ignition electrode and the burner. After a flame is detected by the flame sensor, the controller controls the high-voltage provider to stop the high-voltage pulses.

Abstract: A gas mixer includes at least one outlet pipe and a base having an inlet portion and a mixing portion. The inlet portion has an air inlet, at least one gas inlet, and an air path. The air path communicates with the air inlet and the at least one gas inlet, and has an exit. The mixing portion has a mixing chamber communicating with the exit. The outlet pipe is engaged with the mixing portion of the base, and extends into the mixing chamber. The exit of the air path corresponds to a body of the outlet pipe. Therefore, air and gas can be effectively premixed and outputted to a burner, whereby to accurately control the air-fuel ratio to enhance the combustion efficiency of the burner.

Abstract: A gas mixer includes a flow splitter and a base having an inlet portion and a mixing portion. The inlet portion has an air inlet, an air chamber, an at least one gas inlet, and an opening, communicating with each other. The air chamber has two opposite walls, which are inclined, and a distance therebetween gradually decreases from the air inlet to the opening. The gas inlet is located on one of the walls. The mixing portion has a mixing chamber communicating with the opening and a burner, respectively. The flow splitter is provided in the air chamber and located between the gas inlet and the air inlet. The flow splitter has at least one through hole facing one of the walls. Therefore, air and gas could be effectively premixed and outputted to the burner, whereby to accurately control the air-fuel ratio to enhance the combustion efficiency of the burner.

Abstract: A fluid-driven power device is provided, including two fixed plates and a plurality of vanes. The two fixed plates are spaced out a distance, and respectively have two inner surfaces face each other, wherein a central axis passes through centers of the two inner surfaces. The vanes are provided between the two fixed plates and around the central axis. Two connected ends of each vane are respectively connected to the inner surface of the two fixed plates. Each vane forms a spiral twist, and the torsion angle of each of the vanes is changed from a central portion between the two connected ends toward the two connected ends in a symmetrical manner. Whereby the vanes can rectify the fluid, and prevents the output fluid from forming turbulence which interferes with rotation of the power device. Therefore, the rotation speed and efficiency of the power device will be further improved.

Abstract: A switching device includes a rod, a rotating shaft, and a valve assembly including a cover and a plug member. The cover engaged with the valve body has a first block section, a second block section, a space, and a threaded hole communicates with the space. The plug member is rotatably provided in a chamber of the cover, changing an area of an opening of an inlet hole. The rotating shaft has a projection is adapted to drive the plug member to rotate. A rod body of the rod has a threaded section engaged with the threaded hole. When the projection abuts against the first block section, the plug member seals the inlet hole. When the projection abuts against the rod, the plug member changes the area to a first area. When the projection abuts against the second block section, the plug member changes the area to a second area.

Abstract: A method for verifying an operation in a wireless remote control system is disclosed, comprising the following steps: receive a control command with a server, and store the control command in the server; upon receiving an inquiry command from a relay device, the control command is sent to the relay device, and then sent to a home appliance to operate the home appliance accordingly; a state information is generated by the home appliance after performing the operation, and is sent to the server by the relay device; determine whether the server receives the state information; if so, a corresponding relation between the state information and the control command is established in the server; otherwise, the relay device is required to return the state information again, until the server does receive the state information. Whereby, the operation of the home appliance could be verified.

Abstract: A hot water supply system provided on a water pipeline, which includes a water inflow side and a water outlet side. The hot water supply system includes a plurality of water heaters; each includes a conduit, a heating device, a calculating unit, and a control unit. The conduit includes an inlet section, an outlet section, and a heating section in sequence, wherein the inlet section and the outlet section are connected with the water inflow side and the water outflow side respectively; the heating device heats the heating section; the calculating unit estimates a heating workload needed. If the heating workload of any water heater exceeds a predetermined upper limit workload thereof, the control unit of one water heater controls the other idle heating device to heat water, which ensures that water temperature of water provided to the water outflow side would reach a demanded water temperature.

Abstract: A plug member of gas valve has an axial bore, a first bore, and a second bore, wherein the first bore and the second bore are located in a radial direction of the plug member, and communicate with the axial bore, respectively. A diameter of the first bore is larger than that of the second bore. A first guiding slot and at least one first oil groove are recessed into the outer peripheral surface of the plug member, wherein the first guiding slot has a first end communicating with the first bore, and a second end near the second bore without physically communicating with the second end. The at least one first oil groove is near the second end of the first guiding slot without physically communicating with the first guiding slot or the second bore. Whereby, the first oil groove provides space for receiving lubricant.

Abstract: A combustor is provided, including a pipe and a burner tray. The pipe is transverse U-shaped, including a first pipe section and a second pipe section. The first pipe section has an inlet, and the second pipe section has an outlet extending along an axial direction thereof. The second pipe section has at least one reduced section, wherein a smallest sectional area in the reduced section is smaller than sectional areas on both sides of the reduced section. The burner tray is connected to the second pipe section, provided over the outlet, and has a plurality of flame holes which communicate with the outlet. Whereby, with the reduced section, the flow including gas could be evenly delivered to the burner tray. As a result, after the gas exhausted through the flame holes is ignited, the combustion range would be evener, which enhances the combustion efficiency.

Abstract: A burner includes a base and a combustion tray, wherein the base has an inlet pipe and two horn-shaped tubes. The horn-shaped tubes are connected to opposite sides of the inlet pipe, wherein each of the horn-shaped tubes respectively has a first section. A length of the first sections is no less than an inner diameter of the inlet pipe at where the horn-shaped tubes are connected to. The combustion tray is engaged with the base, and communicates with the horn-shaped tubes. Whereby, gas and air could be fully mixed while flowing through each of the first sections. The symmetrical horn-shaped tubes could direct the airflow to the combustion tray, where the airflow could be outputted from flame vents of the combustion tray, whereby to generate more even flame, and to enhance the heating efficiency.

Abstract: A Wi-Fi/radio frequency (RF) converting device includes a Wi-Fi transceiver, a multiplexing converting module, an RF transceiver, and an RF extension device. The Wi-Fi transceiver receives a Wi-Fi control signal from a control signal generator, wherein the Wi-Fi control signal contains at least one command. The multiplexing converting module receives the Wi-Fi control signal from the Wi-Fi transceiver, and converts the Wi-Fi control signal into a first wireless control signal or a second wireless control signal. The RF transceiver is electrically connected to the multiplexing converting module, and is connected to at least one electric appliance through RF signals. The RF transceiver receives the first wireless control signal from the multiplexing converting module, and transmits the RF control signal to the electric appliance. The RF extension device transmits the second wireless control signal, which corresponds to at least one another electric appliance, to the at least one another electric appliance.

Abstract: A method for controlling a gas-fired appliance is presented, wherein the gas-fired appliance includes a combustor, at least one flow-regulating valve, and a solenoid valve which are all interconnected, and adaptive to low or no power supplied to the gas-fired appliances, including the steps of: using the solenoid valve to block fuel gas, determining whether the power returns to normal, and if not, maintaining the solenoid valve block, and if so, closing the flow-regulating valve to thereby block the fuel gas such that the fuel gas flow is paused when the solenoid valve is open during a next ignition try.

Abstract: A switching assembly of a gas stove includes a regulating valve, a knob, a stop board, and a restricting device. The regulating valve has a valve member and a regulating member, which is rotatable to regulate a gas flow through the valve member. The knob is connected to an end of a shaft which is connected to the regulating member with an opposite end thereof, and therefore the regulating member can be rotated by turning the knob. The stop board is located between the valve member and the knob, wherein the stop board has a curved slot, which has a first stop portion and a second stop portion. The restricting member is movable in the curved slot and is restricted by the first or the second stop portions. When the restricting member touches the first stop portion, the switching assembly allows larger gas flow to flow through.

Abstract: A method for verifying an operation in a wireless remote control system is disclosed, comprising the following steps: receive a control command with a server, and store the control command in the server; upon receiving an inquiry command from a relay device, the control command is sent to the relay device, and then sent to a home appliance to operate the home appliance accordingly; a state information is generated by the home appliance after performing the operation, and is sent to the server by the relay device; determine whether the server receives the state information; if so, a corresponding relation between the state information and the control command is established in the server; otherwise, the relay device is required to return the state information again, until the server does receive the state information. Whereby, the operation of the home appliance could be verified.

Abstract: A circuit structure of a gas valve controls a first driver and a second driver, which respectively drive a main valve and a safety valve. The circuit structure includes a power switching circuit, a control circuit, a protection circuit, an abnormal voltage detection circuit, a first valve switching circuit, a second valve switching circuit, and a processor which is electrically connected to the aforementioned circuits. The processor receives abnormal signals outputted by the abnormal voltage detection circuit, and outputs signals to control the power switching circuit, the control circuit, the protection circuit, the first valve switching circuit, and the second valve switching circuit to control the first driver and the second driver. The main valve and the safety valve can be opened or closed in this way.

Abstract: A plug member of a gas valve, having an axial bore, a first bore and a second bore located in a radial direction thereof to respectively communicate with the axial bore, and a first guiding slot and a second guiding slot recessed into an outer peripheral surface thereof. The first bore is larger than the second bore, and communicates with one end of the first guiding slot, while another end thereof is near the second bore. The first guiding slot becomes narrower from the first end to the second end. The second guiding slot has one end communicating with the second bore, and another end located between said first end and said second end.

Abstract: A plug member of gas valve has an axial bore, a first bore, and a second bore, wherein the first bore and the second bore are located in a radial direction of the plug member, and communicate with the axial bore, respectively. A diameter of the first bore is larger than that of the second bore. A first guiding slot and at least one first oil groove are recessed into the outer peripheral surface of the plug member, wherein the first guiding slot has a first end communicating with the first bore, and a second end near the second bore without physically communicating with the second end. The at least one first oil groove is near the second end of the first guiding slot without physically communicating with the first guiding slot or the second bore. Whereby, the first oil groove provides space for receiving lubricant.

Abstract: A method of ensuring the safety of exhaust of a water heater includes the following steps: A. start the blower and detect a rotational speed of a motor thereof; B. determine a first range based on the detected rotational speed; C. start the blower and detect the rotational speed of the motor when the water heater is restarted again; D. keep supplying gas to the burner for combustion when the rotational speed detected in step C is within the first range. During operation, a second range is determined by detecting the rotational speed of the motor after an outlet water temperature reaches a corresponding constant temperature range; the rotational speed is continuously detected, and the gas supply is stopped if the detected rotational speed is out of the second range. Thereby, the result of the method would be more accurate regardless of the actual installed status of the exhaust pipe.

Abstract: A roasting machine is provided, including a base, a heating device, a body, and a flow guiding device. The heating device is received inside the base to generate a hot air flow. The main body is provided on the base, and has a roasting room and a flow passageway, wherein the flow passageway communicates with the heating device. The flow guiding device includes a first diversion block and a plurality of guide vanes, wherein the first diversion block is received inside the roasting room; the guide vanes are received inside the flow passageway and under the first diversion block. Each of the guide vanes is inclined, and the guide vanes surround around an axis which passes through the center of the first diversion block. Whereby, the flow guiding device is capable of changing the flowing direction of the hot air flow to effectively stir the ingredients in the roasting room.