45results about How to "Run silent" patented technology

A vibrating massager includes a housing (10), a power source (14) supported by the housing and a replaceable motor (12). The housing (10) and motor (12) are configured so that the motor may be readily replaced by a human operator without the need to replace the housing, power source, or other components. The motor (12) may be sized and configured to substitute for a conventional battery in a multi-battery device. When positioned in place of a battery in a supporting device, the motor operates to impart a vibrating motion to the supporting device.

A vibrating massager includes a housing (10), a power source (14) supported by the housing and a replaceable motor (12). The housing (10) and motor (12) are configured so that the motor may be readily replaced by a human operator without the need to replace the housing, power source, or other components. The motor (12) may be sized and configured to substitute for a conventional battery in a multi-battery device. When positioned in place of a battery in a supporting device, the motor operates to impart a vibrating motion to the supporting device.

An air purification apparatus (100) for purifying air in a target space external to the apparatus is disclosed that comprises at least one pollutant removal structure (130; 131, 132) for removing a pollutant from the air in fluid connection with a major vent (110) and a directional vent arrangement comprising a directional inlet (112) for drawing air into the air purification apparatus from a region of the target space in an aiming direction of the directional inlet; and a directional outlet (114) for expelling air in a further aiming direction towards the region. An air movement device (120; 121, 122) configured to move air from the directional inlet to the major vent in a first configuration and to move air from the major vent to the directional outlet through the at least one pollutant removal structure in a second configuration responsive to a controller (150) is also present, as well as a sensor (140) arranged to determine a concentration of the pollutant in the air in said region when the air movement device is in the first orientation, wherein the controller is responsive to the sensor and is adapted to switch the air movement device from the first configuration to the second configuration upon the concentration of the pollutant exceeding a defined pollutant concentration threshold.

A sheet feeding apparatus includes: a sheet containing device for housing sheets; a sheet feeding roller that feed the sheets contained in the sheet containing device; a pushing member for pushing the sheets contained in the sheet containing device against the sheet feeding roller; a separation pad which is provided so as to be capable of abutting against the sheet feeding roller and separates the sheets one by one as the sheets are fed by the sheet feeding roller and the pushing member; and a sheet guide portion arranged between a pushing portion where the sheets are pushed against the sheet feeding roller by the pushing member and an abutting portion where the sheet feeding roller and the separation pad come into abutment against each other. As a result, a sheet feeding apparatus with reduced noise can be realized. In addition, an image forming apparatus with silent operation can be realized by using the sheet feeding apparatus.

The invention discloses a heat pipe type energy-saving central air-conditioning cooling system. The central air-conditioning cooling system comprises a cooling tower and is characterized in that a heat pipe device is installed in a case of the cooling tower, cool air inlets are mounted on two sides of the case of the cooling tower, a hot air outlet is arranged at the top of the case of the cooling tower, and an induced draft fan is mounted at the hot air outlet; the heat pipe device is a spiral heat pipe, a forest-type heat pipe or a branch-shaped heat pipe, the evaporation section of the heat pipe contacts with a working solution in a junction box, the cooling section contacts with cool air induced by the cool air inlet, hot air formed by the heat pipe after heat is absorbed by the cool air is discharged out of the cooling tower through the induced draft fan, and the heat pipe introducing a heat source form a heat exchanger of a refrigerating unit is connected to the working solution in the junction box; and a water tray in the cooling tower is equipped with a circular sprayer or atomizer, an electric pump is started to enable water in the water tray to be sprayed through the sprayer or atomized through the atomizer, the water in the water tray is supplied by a water supply pipe which is connected with a tap water pipe outside, and the water volume is controlled by a float valve device. The heat pipe type energy-saving central air-conditioning cooling system has the advantages of being water-saving, small in occupied building space and silent in operation.

A side channel compressor for compressing a gas comprises a housing (3), a side channel (30), located in the housing (3) and having a cross-sectional area (A), for compressing a gas, a gas inlet opening (31) formed in the housing (3), the gas inlet opening (31) being in flow connection with the side channel (30) for introducing a gas, a gas outlet opening (32) formed in the housing (3) for discharging the gas to be compressed from the side channel (30), wherein the gas outlet opening (32) is in flow connection with the gas inlet opening (31) via the side channel (30), and an impeller (2) which is mounted for rotation in the housing (3) and comprises impeller blades (1) disposed in the side channel (30), wherein the cross-sectional area (A) of the side channel (30) decreases non-monotonically from the gas inlet opening (31) towards the gas outlet opening (32).

A method for controlling at least one fan (13) for the regulation of the cooling demand of at least two cooling elements (12) included in a drill rig (1), the cooling demand of each one of the cooling elements (12) being determined, that the determined cooling demands are weighted together and that the fan (13) is controlled based on the weighting together. The method is characterized in that at least one of the cooling elements is equipped with a safety thermostat (21), which, if required, prevents overcooling that the fluid is not allowed to circulate in the cooling elements. The invention also relates to a drill rig for the execution of the above-mentioned method.

A suspension swing device includes a supporting beam (3) of a supporting bracket (1), a suspended joint (4) fixed on the supporting beam (3) via bearings, a suspended swing stems (41), a gear motor (5), a torque output plate (55), a swing pushing member (54), a swing direction monitor (6) and a microcomputer controller (7). The suspended swing stem (41) is mechanically connected with the suspended joint (4). The gear motor (5) is mechanically connected with the supporting beam (3). The torque output plate (55) and the swing pushing member (54) are connected to the output shaft of the gear motor (5). The microcomputer controller (7) is connected with the swing direction monitor (6) and the gear motor (5). The on-off operation of the gear motor (5) is controlled by the microcomputer controller (7).

A flow control device comprises a laminate structure of an electroactive material layer and a non-actuatable layer. An array of orifices is formed in one of the layers wherein the orifices are open in one of the rest state and actuated state and the orifices are closed in the other of the rest state and actuated state. Actuation of the electroactive material layer causes orifices to open and close so that flow control function may be implemented.

In a method for controlling at least one fan (13) for the regulation of the cooling demand of at least two cooling elements (12) included in a drill rig (1), the cooling demand of each one of the cooling elements (12) being determined, that the determined cooling demands are weighted together and that the fan (13) is controlled based on the weighting together. At least one cooling element is equipped with a safety thermostat, which, if required, prevents undercooling by the fact that the fluid in question is not allowed to circulate in this cooling element. Also described is a drill rig for the execution of the above-mentioned method.

The invention discloses a hydraulic elevator system with ultra low noise and stable operation. The hydraulic elevator system comprises a car, wherein a hydraulic cylinder is fixed at the bottom of the car and is connected with an oil way system; the oil way system is connected with a control system and comprises an oil cylinder; the oil cylinder is connected with a filter; the filter is connected with an oil pump; the oil pump is connected with a three-position four-way valve and is connected with a port A of the three-position four-way valve; a port B of the three-position four-way valve is connected with the oil cylinder; a port C of the three-position four-way valve is connected with an electric-hydraulic proportional velocity regulating valve; the electric-hydraulic proportional velocity regulating valve is connected with the bottom of the hydraulic cylinder; a port D of the three-position four-way vale is connected with the extension end of the hydraulic cylinder; and a speed detecting module is arranged on the car and is connected with the electric-hydraulic proportional velocity regulating valve via an amplifier. The hydraulic elevator system can correct the operation speed deviation of the car in real time, and can largely improve the car stability and reduce the elevator operation noise.

The invention provides a drug distribution moving bracket of a vein distribution system, which comprises a base, a goods shelf drug containing frame fixed on the base, and trundles arranged on the base, wherein the trundles are rubber wheels, the base is in a sliding plate type structure with two wide ends and a narrow middle, the left end of the bottom surface of the base is provided with a pair of guide wheels which are transversally arranged, and the dimensions of the external edges of the two guide wheels at the width directions are larger than the dimension of the width of the base, and are the same as the dimension of the width of the inner side of an electronic goods position indication fixed bracket matched with the drug distribution moving bracket. According to the invention, when being pushed into the electronic goods position indication fixed bracket, drug distribution moving bracket is guided by the guide wheels to stably and smoothly enter, is not impacted during the process; when the drug distribution moving bracket is pushed to the bottom, all goods positions are in one-to-one correspondence from inside to outside, and the condition that the drugs are mixed due to malposition can be avoided; and whole drug distribution moving bracket can stably and silently operate so as to be fit with the public environment requirements of hospitals.

The invention discloses an ultralow-temperature air energy heat pump heating device. The ultralow-temperature air energy heat pump heating device comprises a machine body, a fan, a hot water outlet and a cold water inlet, wherein the fan is fixedly disposed at the top of the machine body; the hot water outlet is fixedly formed in the top of one side surface of the machine body; the cold water inlet is fixedly formed in the bottom of the hot water outlet; an anti-noise cover is fixedly disposed at the top of the fan; a water storing tank is fixedly disposed at one end of an inner cavity of themachine body; a condenser is fixedly connected to one side of the water storing tank; a liquid storing tank is fixedly connected to the bottom of one side of the condenser; and a filter is fixedly connected to one end of the liquid storing tank. Noise generated when the fan performs heat dissipation work can be effectively lowered through the anti-noise cover, and then operation is more silent; and the machine body is heated through electric resistance wires located on one side of the wall of the inner cavity of the machine body so that the situation that the surface of the machine body is frozen or snow is accumulated on the surface of the machine body, and consequently normal work is affected can be effectively avoided, and the ultralow-temperature air energy heat pump heating device issuitable for being widely applied and popularized.

The invention discloses a vibration reduction supporting foot and a vibration reduction foot pad. The vibration reduction supporting foot comprises a base, a sleeve, elastic assemblies and an upper cover. The sleeve is installed on the base, the elastic assembly is installed in sleeve, and an upper cover is mounted at the upper end of the elastic assembly; the elastic assembly is used for buffering the pressure borne by the upper cover, a concave part is arranged on the upper surface of the base, and a steel ball roller is arranged between the concave part and the elastic assembly; a steel ball of the steel ball roller is located in the center of the bottom of the concave part, the elastic assembly comprises a lower cover and an elastic element, the lower cover is installed at the upper end of the steel ball roller, and the elastic element is installed at the upper end of the lower cover. The vibration reduction supporting foot and the vibration reduction foot pad have the beneficial effects that the vibration and noise reduction effect on the equipment is remarkable, and the equipment runs silently.

The invention relates to the technical field of computer auxiliary equipment, and discloses a computer self-starting heat dissipation device based on principle of thermal expansion and cold contraction, which comprises a heat dissipation disc, a fixed bracket is fixedly connected to the inner wall of the heat dissipation disc, and a fixed sleeve is fixedly connected to the opposite end of the fixed bracket; and an adjusting bin is movably connected to the interior of the fixed sleeve, and a sliding magnetic block is movably connected to the interior of the adjusting bin. According to the computer self-starting heat dissipation device based on the principle of thermal expansion and cold contraction, the movable magnetic plate drives the telescopic rod to slide outwards along the inner wallof the air exchange bin, the thin film is gradually folded, the dust filtering net is gradually opened, the heat dissipation holes are enlarged, and hot air in the case is pumped out in cooperation with the air exchange turbine, so that air in the case and air outside the case are subjected to rapid convection; the purpose of rapid heat dissipation is achieved, the situation that dust enters the case to cover the surfaces of electronic components or block the heat dissipation holes due to long-time opening of the heat dissipation holes is avoided, and therefore the heat dissipation capacity ofa computer is reduced.

The invention discloses a power back door stay assy assembly. The power back door stay assy assembly comprises a sleeve assembly, ball socket components and a driving device, the sleeve assembly is provided with an extension state and a shortening state; the ball socket components are arranged at the two ends of the sleeve assembly and comprise an upper ball socket connected with a vehicle body and a lower ball socket connected with a vehicle door; the driving device is used for driving the sleeve assembly to be switched between the extension state and the shortening state; a fixed housing is arranged close to the upper ball socket, a fixed adjusting fluted disc is arranged on the fixed housing, and a movable adjusting fluted disc is arranged on the upper ball socket; and the movable adjusting fluted disc is separated from or meshed with the fixed adjusting fluted disc. According to the power back door stay assy assembly, through the cooperation of the movable adjusting fluted disc and the fixed adjusting fluted disc in the structure, the angle adjustment of the upper ball socket relative to the sleeve assembly (the lower ball socket) can be realized, so that the matching combination of the upper ball socket and the lower ball socket at any angle is realized, vehicle bodies and back doors with various shapes can be adapted, the universality is realized, and many production costs such as research and development costs and mold costs are greatly saved.