Abstract: A chip package includes a chip, a sidewall structure that has a first light-shielding layer, a second light-shielding layer, and a cover. The chip has a light emitter and a light receiver that are located on a top surface of the chip. The sidewall structure is located on the top surface of the chip and has two aperture areas. The light emitter and the light receiver are respectively located in the two aperture areas. The sidewall structure surrounds the light emitter and the light receiver, and at least one surface of the sidewall structure has the first light-shielding layer. The second light-shielding layer is located between the chip and the sidewall structure. The cover is located on a surface of the sidewall structure facing away from the chip, and at least covers the light receiver and the sidewall structure that surrounds the light receiver.

Abstract: A roots rotor for removing dust coagulum and droplets comprises a rotor body, which rotates inside the roots pump case. Both ends of the rotor body are sealing surfaces, which are meshed with the inner wall of the roots pump case. The rotor slot scraping cavities are arranged on both sides of the sealing surface. The side of the rotor slot scraping cavity close to the sealing surface is set as the scraper surface, which forms a sharp edge with the sealing surface. A guide surface is arranged on the surface of the rotor body, and the guide surface is located on the side of the rotor slot scraping cavity away from the sealing surface.

Abstract: A structure of rotor connection of multi-axial multi-stage roots pump comprises a rotor body, a rotor shaft is arranged on one end face of the rotor body, a sub-shaft cavity is opened in the rotor shaft, and the locating keyways are symmetrically opened on both sides inside the sub-shaft cavity; a sub-shaft is arranged on the other end face of the rotor body, the sub-shafts and the sub-shaft cavities of two adjacent rotor bodies are matched, locating keyways are symmetrically opened on both sides of the sub-shaft, and the keyways are installed and fixed through sub-rotor shaft keys in the locating keyways. The invention overcomes the disadvantages of the prior art, and the first-stage rotor body is limited and fixed by the bearing, while the second-stage rotor body is only radially limited by the bearing in the first-stage rotor body.

Abstract: A transmission structure of motor connection of roots pump comprises a shaft sleeve, a motor shaft cavity is opened inside the shaft sleeve, and the inner circle of the motor shaft cavity is concentrically meshed with the excircle of the motor shaft; a fixed bolt mounting cavity is opened on the outer surface of the shaft sleeve, a bolt through-hole is opened in the fixed bolt mounting cavity, the shaft sleeve is fixedly connected with the gear seat through a hexagon bolt, and the gear seat and the shaft sleeve rotate synchronously at the same shaft center; a gear is fixedly connected with the gear seat with a bolt, the gear seat is fixed to the pump shaft through a first keyway under the fitting between the first keyway and a first shaft key, and the pump shaft and the motor shaft are coaxially arranged at the center.

Abstract: A driving structure of a three-axis multi-stage Roots pump comprises a pump body, wherein a gear end cover is mounted at one side of the pump body, an air outlet end moving bearing air sealing unit is mounted on the other side of the pump body, and the bearing end cover is mounted on the pump at the side of the pump body; a driving axis, a first driven axis and a second driven axis are further provided inside the pump body, and the driving axis is connected with the first driven axis and the second driven axis through the gear, respectively; and both ends of the driving axis, the first driven axis and the second driven axis are movably connected to an air inlet end gear mechanical seal driving unit and an air outlet end moving bearing air sealing unit, respectively.

Abstract: A pump housing structure of a three-axis multi-stage Roots pump is provided, comprising a first-stage pump housing, a second-stage pump housing and a third-stage pump housing, wherein the first-stage pump housing is provided with a first center axial hole, a first left axial hole and a first right axial hole; a fixed bearing end cover is mounted on the side of the first-stage pump housing, three fixed bearing chambers are provided on the surface of the fixed bearing end cover; the second-stage pump housing is provided with a second center axial hole, a second left axial hole and a second right axial hole, the third-stage pump housing is provided with a third center axial hole, a third left axial hole and a third right axial hole, and the end surface at the outer side of the third-stage pump housing is fixedly mounted with a non-driving end bearing end cover. The present invention can accommodate and fix three axes through three fixed bearing chambers, respectively.

Abstract: A fluid cleaning apparatus includes a driving assembly including a motor, a gear clutching assembly, a moving assembly, a swaying spray assembly, a sensing assembly, and a controlling module. The fluid cleaning apparatus integrates functions of movement actuation and spraying angle adjustment with the motor and achieves versatile spraying angles for spray-cleaning with apparatus configuration convertible between swaying motion and ceased swaying motion and/or between moving motion and ceased moving motion. Besides, self-propelled movement, spraying pressure modulation, and spraying angle adjustment can be controlled by the control module or manually remotely controlled by a user. Since the fluid cleaning apparatus of the present application saves the conventional installation cost and space needed, as well as resources consumed, for cleaning the bottom of an object to be cleaned, the fluid cleaning apparatus can be extensively applied to multiple fields.

Abstract: A mobile rustproofing washing system includes a receptacle, a control module, a water supply module, a filtration module and a washing module. The receptacle is removably disposed on a mobile carrier. The control module is disposed in the receptacle. The water supply module is disposed in the receptacle and includes a front water tank and a rear water tank. The filtration module is connected to the front water tank and the rear water tank. The filtration module receives and filters water from the front water tank. The filtered water is stored in the rear water tank. The washing module connects with the rear water tank and receives water therefrom, so as to carry out a washing process. Therefore, the mobile rustproofing washing system is quick to mount/demount and easy to use, thereby having high mobility.

Abstract: A high voltage device includes: a semiconductor layer, a well, a body region, a gate, a source, a drain, and a drift oxide region. The semiconductor layer is formed on a substrate, wherein the semiconductor layer has at least one trench. The well is formed in the semiconductor layer. The body region is formed in the well. The gate is formed on the well, and is in contact with the well. The source and the drain are located below, outside, and at different sides of the gate, in the body region and the well respectively. The drift oxide region is formed on a drift region, wherein a bottom surface of the drift oxide region is higher than a bottom surface of the trench.

Abstract: A high-voltage semiconductor device has a main high-voltage switch device and a current-sense device for mirroring the current through the main high-voltage switch device. The main high-voltage switch device has a plurality of switch cells arranged to form a first array on a semiconductor substrate. Each switch cell has a first cell width. The current-sense device has a plurality of sense cells arranged to form a second array on the semiconductor substrate. Each sense cell has a second cell width larger than the first cell width. The switch cells and the sense cells share a common gate electrode and a common drain electrode.

Abstract: A modularized integrated non-coaxial multiple chamber dry vacuum pump is formed by at least two modularized vacuum chambers that can be integrated into a solid multiple stage dry vacuum pump. These chambers are connected in serial to allow gas to pass through and be discharged directly to the atmosphere. Each chamber contains a pair of lobes of its own and at least one chamber does not share at least one coaxial axle with another chamber. At least two chambers do not share all co-axial(s) and can have their own power drive at different RPMs from either different motors or transmissions.

Abstract: A power-outputting management method includes following steps. When a plurality of power-supplying apparatuses are in a working interval, if an output power ratio of the power-supplying apparatus in a working status is less than an output power ratio standard, at least one of the power-supplying apparatuses in the working status is turned off, so that the output power ratio of the power-supplying apparatus in the working status increases and meets the output power ratio standard. When the power-supplying apparatuses are in the working interval, if the output power ratio of the power-supplying apparatus in the working status meets the output power ratio standard, a power capping of the power-supplying apparatuses is set based on an actual power consumption of an electronic apparatus.

Abstract: The present application discloses a fluid cleaning apparatus which includes a driving assembly including a motor, a gear clutching assembly, a moving assembly, a swaying spray assembly, a sensing assembly, and a controlling module. The fluid cleaning apparatus integrates functions of movement actuation and spraying angle adjustment with the motor and achieves versatile spraying angles for spray-cleaning with apparatus configuration convertible between swaying motion and ceased swaying motion and/or between moving motion and ceased moving motion. Besides, self-propelled movement, spraying pressure modulation, and spraying angle adjustment can be controlled by the control module or manually remotely controlled by a user. Since the fluid cleaning apparatus of the present application saves the conventional installation cost and space needed, as well as resources consumed, for cleaning the bottom of an object to be cleaned, the fluid cleaning apparatus can be extensively applied to multiple fields.

Abstract: A multistage power saving vacuum device with a root vacuum pump in a first stage comprises a vacuum inlet gas-driving shut-off valve for receiving non-condensing gas pumping from a power plant condenser; a first root vacuum pump connected to the vacuum inlet gas-driving shut-off valve for receiving and compressing the gas outputted from the vacuum inlet gas-driving shut-off valve; a second vacuum pump serially connected to the first root vacuum pump for further compressing the gas from the first root vacuum pump. A last stage vacuum pump connected to the second vacuum pump for further compressing the gas outputted from the second vacuum pump; and a vapor separator connected to the last stage vacuum pump for separating vapor and air; wherein the gas is vented out and the vapor is returned to the last stage vacuum pump.

Abstract: A chip package includes a chip, a sidewall structure that has a first light-shielding layer, a second light-shielding layer, and a cover. The chip has a light emitter and a light receiver that are located on a top surface of the chip. The sidewall structure is located on the top surface of the chip and has two aperture areas. The light emitter and the light receiver are respectively located in the two aperture areas. The sidewall structure surrounds the light emitter and the light receiver, and at least one surface of the sidewall structure has the first light-shielding layer. The second light-shielding layer is located between the chip and the sidewall structure. The cover is located on a surface of the sidewall structure facing away from the chip, and at least covers the light receiver and the sidewall structure that surrounds the light receiver.

Abstract: A power-outputting management method includes following steps. When a plurality of power-supplying apparatuses are in a working interval, if an output power ratio of the power-supplying apparatus in a working status is less than an output power ratio standard, at least one of the power-supplying apparatuses in the working status is turned off, so that the output power ratio of the power-supplying apparatus in the working status increases and meets the output power ratio standard. When the power-supplying apparatuses are in the working interval, if the output power ratio of the power-supplying apparatus in the working status meets the output power ratio standard, a power capping of the power-supplying apparatuses is set based on an actual power consumption of an electronic apparatus.

Abstract: A power metal-oxide-semiconductor field-effect transistor (MOSFET) device includes a first metal layer, a substrate, an epitaxy layer, a plurality of first trench wells, a plurality of second trench wells, a plurality of body structure layers, a plurality of polysilicon layers, and a second metal layer. A part of a depletion region is formed between each first trench well and the epitaxy layer and between a body structure layer corresponding to the each first trench well and the epitaxy layer, and a rest part of the depletion region is formed between a second trench well corresponding to the each first trench well and the epitaxy layer. The plurality of second trench wells increase a breakdown voltage of the power MOSFET device and reduce a conduction resistor of the power MOSFET device.

Abstract: A mobile rustproofing washing system includes a receptacle, a control module, a water supply module, a filtration module and a washing module. The receptacle is removably disposed on a mobile carrier. The control module is disposed in the receptacle. The water supply module is disposed in the receptacle and includes a front water tank and a rear water tank. The filtration module is connected to the front water tank and the rear water tank. The filtration module receives and filters water from the front water tank. The filtered water is stored in the rear water tank. The washing module connects with the rear water tank and receives water therefrom, so as to carry out a washing process. Therefore, the mobile rustproofing washing system is quick to mount/demount and easy to use, thereby having high mobility.

Abstract: A high-voltage semiconductor device has a main high-voltage switch device and a current-sense device for mirroring the current through the main high-voltage switch device. The main high-voltage switch device has a plurality of switch cells arranged to form a first array on a semiconductor substrate. Each switch cell has a first cell width. The current-sense device has a plurality of sense cells arranged to form a second array on the semiconductor substrate. Each sense cell has a second cell width larger than the first cell width. The switch cells and the sense cells share a common gate electrode and a common drain electrode.

Abstract: A power metal-oxide-semiconductor field-effect transistor (MOSFET) device includes a first metal layer, a substrate, an epitaxy layer, a plurality of first trench wells, a plurality of second trench wells, a plurality of body structure layers, a plurality of polysilicon layers, and a second metal layer. A part of a depletion region is formed between each first trench well and the epitaxy layer and between a body structure layer corresponding to the each first trench well and the epitaxy layer, and a rest part of the depletion region is formed between a second trench well corresponding to the each first trench well and the epitaxy layer. The plurality of second trench wells increase a breakdown voltage of the power MOSFET device and reduce a conduction resistor of the power MOSFET device.