346 results about "Thermal cutoff" patented technology

To provide a ceramic heater capable of reducing temperature uniformity at the periphery of through holes such as insertion holes and vacuum suction holes, thereby protecting the wafer against thermal shocks and having improved controllability for temperature control parts such as thermocouples and temperature fuse. Further, a ceramic heater capable of uniform resin curing is provided. A heat generation body 14 is disposed on the surface or inside of the ceramic substrate 12. Further, corners for the insertion holes 16, the recesses 18 and the vacuum suction holes 20 of the ceramic substrate 12 are chamfered.

A modular lightning surge protection apparatus is applied to a single-phase three-wire power system with a line, a neutral, and a ground. The modular lightning surge protection apparatus includes a substrate, a surge protection unit, a first temperature fuse, and a second temperature fuse. The surge protection unit has a first surge protection element, a second surge protection element, and a third surge protection element to form a wye connection or a delta connection structure. Furthermore, the surge protection unit, the first temperature fuse, and the second temperature fuse are electrically connected on the substrate to form a small-scale modular circuit integration structure.

The present invention provides an automatic coffee maker, which is compact and safe. In use of the automatic coffee maker, under the control of the control circuit, prior to heating, the pump is started to make certain cold water flow into the boiler, so as to prevent the temperature sensor or temperature fuse from damage by heating. Therefore, the safety performance and the operation performance of the automatic coffee maker of the present invention are greatly improved.

A wearable ultrasound device and method of using the device includes a power controller with a power source and at least one integrated circuit that delivers electrical power to an applicator. The applicator is electrically coupled to the power controller and a surface of the applicator transmits ultrasound to a wearer for a given duration. The applicator includes radio frequency (RF) drive electronics, an ultrasound transducer coupled to the drive electronics, a monitoring apparatus that includes a thermal cutoff coupled to the drive electronics, where the monitoring apparatus monitors a temperature of the applicator surface and the thermal cutoff turns off the applicator, if the temperature exceeds a pre-defined threshold, and a coupling bandage coupled to the applicator, where the bandage positions the surface of the applicator proximate to a wearer at a location on the body of a wearer.

The invention discloses automatic detection equipment for detecting the quality of a thermal fuse. The automatic detection equipment comprises a moving device, a rotating device, a resistance detection device, a thickness detection device, a discharging device and a control module, wherein the moving device is used for moving the thermal fuse; the rotating device is used for rotatably feeding a material; the resistance detection device is used for detecting the resistance of the thermal fuse; the thickness detection device is used for detecting the thickness of the thermal fuse; the discharging device is used for arranging the detected thermal fuse at different positions according to the quality situation. Compared with the prior art, the automatic detection equipment can be used for automatically detecting and storing the thickness and resistance values of the thermal fuse, and judging whether the thickness and resistance values are in predetermined ranges, so that qualified products and unqualified products can be distinguished and can be separately stored.

Quantity of flux coated on fusible alloy of a thermal fuse disclosed can be inspected accurately by an image processing method. The thermal fuse comprises:

• • (a) first insulation film 11 coupled with a pair of metal terminals 12;
  • (b) fusible alloy 13 coupled between ends of the metal terminals 12, being placed above first insulation film 11;
  • (c) flux 14 coated on fusible alloy 13; and
  • (d) second insulation film 15 disposed on first insulation film 11 so that an internal space is formed, being placed above fusible alloy 13,
  • wherein at least either of first insulation film 11 or second insulation film 15 is transparent or translucent, and flux 14 has the Gardner color scale from 4 to 16.

A temperature fuse protection device uses a hot melt metal to rivet for connecting two terminals in the circuit that are separated for making the two terminals electrically-connected and the circuit complete. There is a spacing in between the two free ends of the two terminals when no external force is being imposed. When an electric overloading or high circuit temperature event occurs, the hot melt metal would be heated to melt and break, which would then make the free ends of the two terminals to be disconnected, and therefore, the circuit will be at “OFF” status.

A stacked battery module or a battery pack is formed by laying a plurality of unit batteries of non-aqueous electrolyte batteries in layers with the surfaces thereof having a large area disposed vis-à-vis and electrically connecting them in series and a temperature fuse is arranged in the central part of the stacked battery module with one of its terminals connected to either the positive electrode terminal or the negative electrode terminal of the stacked battery module while the other terminal connected to a charging terminal for supplying a charging current in a charging operation. One of the terminals of the stacked battery module is connected to a discharging terminal for taking out a discharging current in a discharging operation and the other terminal of the stacked battery module is a common terminal for charging and discharging operations.

A fixing unit of an image-forming device having a heating roller, a pressure roller disposed in confrontation with the heating roller, and a case that rotatably supports the heating roller on both longitudinal ends thereof and covers the heating roller from the side opposite the pressure roller, while leaving the pressure roller exposed. A pair of pressure roller support plates, one end of which is supported on the case, rotatably supports both ends of the pressure roller. With this construction, a more compact fixing unit can be achieved than when the case is configured to cover the heating roller and pressure roller entirely. The fixing unit includes a temperature fuse for restraining abnormal temperature rises in the heating roller, and a temperature fuse cover that extends from an inner wall of the case to provide insulation between the temperature fuse and the heating roller. By integrally forming the temperature fuse cover with the case, it is possible to reduce the manufacturing costs of the fixing unit. Support members may also be provided between a bottom surface of the case and the temperature fuse cover to restrain deformation of the temperature fuse cover.

The invention relates to a low molten point alloy wire and a temperature fuse using the alloy wire, wherein the temperature fuse comprises two electrode sheets (1), an insulation bottom film (21) and an insulation upper film (22), a flux (3) and a low motel point allow wire (4). Two electrode sheets (1) are positioned on the insulation bottom film (21). Two ends of the low motel point alloy wire (4) are respectively connected with two electrode sheets (1). The molten flux (3) is coated on the low motel point alloy wire (4) and is coated with the insulation upper film (22). The mass percentages of the low motel point alloy wire (4) include: 50 percent to 56 percent In, 30 percent to 38 percent Sn, 6 percent to 15 percent Bi and a small quantity of Ag, Cu, and Zn. The flux (3) is constituted by rosin, stearine acid, liquid alcohol and small molecule acid. The temperature fuse of the invention can work for longer time on 8A current, thereby improving the blow-out temperature accuracy of the temperature fuse at the same time.

A thermal fuse comprises: a first insulating film to which a pair of metal terminals are attached; a fusible alloy located above the first insulating film and connected between the leading end portions of the pair of metal terminals; and a second insulating film located above the fusible alloy and attached to the first insulating film so as to define a space with the first insulating film. The fusible alloy includes an Sn—Bi—In—Zn alloy containing 0.5 to 15 weight % of Bi, 45 to 55 weight % of In and 0.5 to 5 weight % of Zn with the balance being Sn.

To surely cut off a circuit without relying on the performance or reliability of an overvoltage protection element if an input overvoltage is generated in a power supply line. An inrush current prevention circuit 25 is interposed in at least one of AC line L1 and L2, and a detection circuit 24 detects voltages of the AC lines L1 and L2. If a detected voltage exceeds a prescribed value, a switch circuit 26 is turned on to transmit the excess to the inrush current prevention circuit 25 by a phototriac coupler 41 of a transmission circuit 27. In the inrush current prevention circuit 25, a resistor 43 with a temperature fuse and a triac 42 which is a semiconductor switch element are connected in parallel. The triac 42 is normally conductive, and when information that the switch circuit 26 is turned on is transmitted by the transmission circuit 27, it is opened. It makes a current to flow the resistor 43 with temperature fuse, and a power feeding circuit is disconnected when the temperature fuse is blown off.

A thermal fuse includes a first insulation film having a pair of metal terminals mounted thereto, a fusible alloy located over the first insulation film and connected between respective ends of the metal terminals, a second insulation film provided over the fusible alloy and bonded to the first insulation film as to provide a space between the first and second insulation films. The fusible alloy includes an Sn—Bi—In alloy containing 20 to 39.5 wt. % of tin, 11.5 to 31 wt. % of bismuth, and 49 to 68.5 wt. % of indium. The fusible alloy does not release lead or cadmium even after being disposed of since it contains no lead and no cadmium.

The thermal fuse of the present invention contains a fuse element 1 that is formed of a fusible alloy having a composition of 43.5-50 wt % Sn, 0.1-5 wt % In, and balance being Bi and inevitable impurities, or a fusible alloy having a composition of 5-33 wt % In, 4.7-15.5 wt % Zn, and balance being Sn and inevitable impurities; a pair of electric terminals 2, 3 connected to the fuse element; and case 8 for accommodating at least the fuse element 1. The opening end of case 8 has a predetermined shape. By employing the structure above, a thermal fuse having an operating temperature as high as 130-190° C. can be easily obtained.

The invention relates to a lead-free low-temperature alloy used for making a fuse core of a thermal fuse. Its raw material composition and its weight percentage range are respectively: Bi: 34%-36%; Zn: 3.5%-4.5%; Sn: balance The preparation method has the following steps: put metal tin into a stainless steel crucible, heat it in an electric furnace, after the tin is melted, add metal zinc at 250-280°C, and after melting, then add metal bismuth to melt After cleaning, conventional degassing and slag removal are performed by adding a degassing agent, and cast into a low-temperature alloy rod of the required size. The lead-free low-temperature alloy containing Sn, Bi and Zn involved in the present invention is used for making the fuse core of the thermal fuse, and the melting point is 132±2° C. It has low characteristics and is a lead-free environmental protection material, which itself has good social and economic benefits.

The invention relates to a thermal fuse (1) for interrupting a power flow in modules, particularly for use in the automotive field, comprising: - a connecting element having a connecting region, - a fusible element (3) composed of fusible material and attached with one end to the connecting region (2) in order to establish an electrically conductive connection between the fusible element (3) and the connecting element (2), the connecting element (2) comprising an expansion region for accommodating melted fusible material, characterized in that the expansion region has an expansion surface (6) on which part of or all of the melted fusible material spreads as the fusible element melts, the expansion surface (6) having no positive curvature.

The invention relates to a flux and a temperature fuse with the flux, wherein the flux is formed by mixing common rosin, stearic acid, liquid alcohol and minim small molecule acid in the following mixing ratio (weight percent): 50 percent to 70 percent rosin, 5 percent to 20 percent stearic acid, 10 percent to 40 percent liquid alcohol and 0.5 percent to 16 percent small molecule acid. The temperature fuse element comprises an electrode slice (1), an insulation bottom film (21) and insulation upper film (22), the flux (3) and a lower melting point alloy wire (4). Compared with the prior flux, the flux of the invention obviously improves the thermal-link performance and does not decompose during storage, and well maintain the activity of the flux. The thermal-link performance of the temperature fuse element used by lithium ion cell produced by the invention is obviously improved, thus forming better protection for lithium cell.

A steam generator for a laundry machine is disclosed, in which the power supplied to a heater is cut off before a water level of water used to generate steam is lower than an end of the heater, thereby avoiding a risk of fire. The steam generator includes a case coupled with the main body of the laundry machine. A heater is provided inside the case. A temperature fuse is provided inside the case when a coupling portion couples the case with the main body of the temperature fuse is configured to be higher than the heater based on a horizontal line.

The present disclosure provides high temperature thermal cutoff devices having a high-temperature thermal pellet with a transition temperature of greater than or equal to about 240 DEG C and comprising at least one organic compound. The pellet is disposed in a housing, which is sealed with a high-temperature seal that provides substantial sealing up to at least the transition temperature. The high-temperature TCO also has a current interruption assembly, which establishes electrical continuity in a first operating condition corresponding to an operating temperature of less than said transitiontemperature and discontinues electrical continuity when the operating temperature exceeds the transition temperature. Methods of making such high-temperature thermal cut off devices are also provided.

A fail-safe insufflation device having a thermal cutoff for interrupting power to an electrical heater to prevent overheating of insufflation gas wherein the thermal cutoff operates independent of a temperature control system to provide electrical shutdown of an electrical heater in response to a hostile temperature condition of the insufflation gas or a hostile temperature condition proximate the electrical heater.