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 control device for a gas burner includes a housing having a chamber and an inlet and an outlet portion communicating with the chamber of the housing for receiving a gas, a casing rotatably engaged into the chamber of the housing for controlling the flowing of the gas from the inlet to the outlet portion of the housing, a mouth piece attached to the outlet portion of the housing for allowing the gas to flow out through the mouth piece, and a gas nozzle selectively attached to the mouth piece and having an outlet opening smaller than that of the mouth piece for supplying a reduced gas out through the gas nozzle and for fitting with the natural or the bottled gas reservoirs.

Abstract: The sensor device has a casing housing a circuit board and a replaceable sensor on the circuit board. The casing has an opening corresponding to the sensor location and a manually removable cap is reliably positioned in the opening. Once the cap is removed, the sensor can be easily accessed and replaced. The cap is integrated with the casing smoothly so that the appealing of the outlook of the sensor device is minimally affected.

Abstract: The oxygen sensing device contains a power circuit supplying the electricity required, an oxygen sensor for detecting the oxygen concentration in the atmosphere, an alarm system issuing an audible or visual alarm signal, and a controller. The controller is a computing device having a preset threshold value that continuously obtains the current oxygen concentration from the oxygen sensor. The controller then can calculate and obtain the variation rate of the oxygen concentration in a unit time. If the controller detects that the current oxygen concentration is about to drop below the threshold value, it will activate the alarm system to issue an alarm to alert people to take immediate and proper action.

Abstract: A ventilating hood for a water heater includes a housing having an inside formed with an air chamber, a substantially V-shaped guide board mounted in the air chamber of the housing and located between two opposite sides of the housing, and two movable boards each pivotally mounted on a respective one of the two opposite sides of the housing and each facing the guide board. Thus, the waste gas is drained outwardly from the air outlet ports of the housing smoothly and exactly by guidance of the guide board and the movable boards, thereby enhancing the air circulation in the air chamber of the housing, and thereby enhancing the working efficiency of the water heater.

Abstract: A water heater includes a housing, an air box, and two windproof hoods. Thus, the waste gas produced by the burner is drained outward smoothly and regularly even when the air current of the ambient environment is disposed at an abnormal and unstable state, so that the water heater has an enhanced air circulation, thereby facilitating operation of the water heater. In addition, the drain pipe is protected by each of the two windproof hoods to achieve a windproof and rainproof effect.

Abstract: A chip structure and a bonding pad are provided. The chip structure comprises a chip and at least a bonding pad. The chip has an active surface. The bonding pad is disposed on the active surface of the chip. The bonding pad comprises a polygonal body and a plurality of first protruding portions. The polygonal body has a first planar surface and a corresponding second planar surface. The second planar surface of the polygonal body is in contact with the chip. The first protruding portions are disposed on the first planar surface at the corner regions of the polygonal body. By modifying the geometric shape of the bonding pad, the yield of bonding the chip structure and another device together through the bonding pad is increased.

Abstract: A water heater includes a housing, an air box, two windproof hoods, and a catalyst converter. Thus, the catalyst converter converts the carbon monoxide produced during the combustion process of the burner into the carbon dioxide and the water, thereby preventing the waste gas containing the carbon monoxide from causing danger to a user so as to protect the user's safety. In addition, the waste gas containing the carbon dioxide is drained outward from the drain pipe, thereby preventing the waste gas from being gathered in the closed room.

Abstract: A chip structure and a bonding pad are provided. The chip structure comprises a chip and at least a bonding pad. The chip has an active surface. The bonding pad is disposed on the active surface of the chip. The bonding pad comprises a polygonal body and a plurality of first protruding portions. The polygonal body has a first planar surface and a corresponding second planar surface. The second planar surface of the polygonal body is in contact with the chip. The first protruding portions are disposed on the first planar surface at the corner regions of the polygonal body. By modifying the geometric shape of the bonding pad, the yield of bonding the chip structure and another device together through the bonding pad is increased.