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.

The invention discloses a full-automatic numerical control sander which comprises a base frame, a top cover, a working table and an electronic control system. The working table comprises a support base board, a rotary disc and a sanding mechanism, wherein the rotary disc and the sanding mechanism are installed on the support base board, an accessory clamp is arranged on the surface of the rotary disc, and the sanding mechanism is arranged to be a gantry structure based on a Cartesian rectangular coordinate system. The electronic control system comprises a movement controller. According to the full-automatic numerical control sander, the movement controller is utilized to preset machining process of accessories, the sander is controlled to automatically conduct polishing, sanding and machining, manual operation is replaced, labor intensity of workers and production cost are reduced, production efficiency is improved, machining accuracy is high, consistency of products is good, and quality of the products can be improved. A variable frequency motor is matched with a high-performance frequency converter, high-speed and silent operation can be achieved, the polishing and the sanding of the accessories are conducted on a top cover, a blowing cleaning mechanism is matched with a sanding head to automatically clean, production conditions (free of noise or dust) can be improved, and safety of workers is ensured.

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 thermal management apparatus includes an electrohydrodynamic fluid accelerator energizable to motivate fluid flow. Primary heat transfer surfaces are positioned to transfer heat into the fluid flow and an ozone reducing material is positioned downstream of the primary heat transfer surfaces. Heating of the ozone reducing material by the fluid flow increases the efficacy of the ozone reducing material. A method of making a product includes positioning an emitter electrode and at least one other electrode to motivate fluid flow along a flow path when the electrodes are energized. The method further includes positioning heat transfer surfaces in the flow path to transfer heat to the fluid flow and positioning ozone reducing material downstream of the heat transfer surfaces in the flow path, the ozone reducing material selected such that heating of the ozone reducing material by the fluid flow increases ozone reducing efficacy of the ozone reducing material.

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.

A leverage-release type silent wrench structure comprised of a ratchet wheel and a torsion handle having a hinge section at one end that is situated next to the ratchet wheel. A clutch block curves upward from one side of the hinge section and a toothed surface consisting of a plurality of teeth is disposed along the arc-shaped inner side of the clutch block that provides for enmeshment with the ratchet wheel. A mounting base and a protective cover in an aligned arrangement accommodate the positioning of the ratchet wheel and the hinge section of the torsion handle within them. A linkage component pivotably conjoins the mounting base, the protective cover, and the hinge section of the torsion handle and, furthermore, such that the linkage component serves as the center point of rotation of the torsion handle. Pulling the torsion handle causes its clutch block to move against the ratchet wheel such that the toothed surface enmeshes the ratchet wheel, enabling the torsion handle to initiate the rotation of the ratchet wheel and thereby rotate a work object. Pulling the torsion handle in the opposite direction causes the separation of the toothed surface of the clutch block from the ratchet wheel, enabling the torsion handle to be rotated back to its initial starting position in a disengaged state around the linkage component at the center point.

A method for controlling at least one fan (13) for the regulation of the cooling demand of at least two cooling elements (12) comprised 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 invention is characterized in that 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. Furthermore, the invention also relates to a drill rig for the execution of the above-mentioned method.

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).

The invention concerns a side channel compressor for compressing a gas, the side channel compressor comprising a housing (3), a side channel (30) located in the housing (3) for compressing a gas, a gas inlet opening which is formed in the housing (3) and is in flow connection with the side channel (30) for introducing a gas to be compressed, a gas outlet opening (32) formed in the housing (3) for discharging the gas to be compressed from the side channel (30), the gas outlet opening (32) being in flow connection with the gas inlet opening (31) by way of the side channel (30), and a impeller (2) mounted for rotary drive in the housing (3), the impeller (2) having at least two impeller blades (1) disposed in the side channel, wherein at least one impeller blade (1) has a flow recess in its free edge region (47).

A hinged glider mechanism includes a hinge device for pivoted mounting in a chair between a stationary base frame and a seat frame, for supporting the seat frame for oscillatory gliding motion generally longitudinally relative to the base frame. The hinge device is configured for repeated substantially silent pivotal oscillating cycles over an extended life. The hinge device includes a hinge panel consisting essentially of a polymeric material, such as acetal copolymer, that is characterized by a sufficient strength and durability to support the seat frame and a seat occupant during repeated and extended pivotal oscillating cycles without failure and a sufficient lubricity not to generate noise during the repeated and extended pivotal oscillating cycles.

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 combined vertical axis wind generating set consists of a vertical axis wind wheel, a generator, triangular brackets and a tower rod, wherein, the bottom of the vertical axis wind wheel is provided with a gear which is meshed with the gear of the generator, the wind wheel directly drives the generator and accelerates the generator; the vertical axis wind wheel is arranged on two brackets taking the shape of a regular triangle; and the tower rod is vertically arranged on the ground. The vertical axis wind wheel consists of three to ten resistance type vertical axis wind wheels; after the vertical axis wind wheel and the combined generator are assembled into the machine set, the trouble that the traditional vertical axis wind wheel has low efficiency is got rid of, and the machine set is far superior to the horizontal axis wind generating set.

Provided is an intelligent electric curtain. The curtain comprises a curtain body, a horizontal guide rail, a motor, a sliding device and a PLC controller, the upper end of the curtain body is mountedon the sliding device, the sliding device is slidably disposed on the horizontal guide rail, the motor is connected to the sliding device to provide power,the PLC controller is in circuit connectionwith the motor and controls the rotation of the motor, the motor is connected with a resistance sensor, the resistance sensor is connected to the PLC controller,a mobile terminal and a light sensor are further included,the mobile terminal is connected to the PLC controller through network / Bluetooth / infrared remote control, the light sensor is disposed outside a window to detect the light intensityand is connected to the PLC controller, and the horizontal guide rail is provided with a stroke switch to limit the stroke of the sliding device. The intelligent electric curtain has the advantages of scientific design, motor stopping under an obstacle, manual and electric operation switching and silent operation of the motor.

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.

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 relates to an industrial fan, comprising a plurality of fan blades, a wheel disc, a deceleration motor, a frame and a hanger rod. The fan blade includes upper and lower layers, which are formed by bending at one time, wherein there is a gap between the upper and lower layers. ; The fan blade and the stalk are connected by a connecting piece; the connecting piece is formed with two concentric bushings, left and right, which are arranged at intervals, and a special-shaped piece is embedded in the two bushings, and a special-shaped piece is embedded on the special-shaped piece. The vibration isolation rubber sleeve is sleeved, so that the outer wall of the special-shaped part and the inner wall of the shaft sleeve are separated by the vibration isolation rubber sleeve; the leaf stalk is inserted between the two concentric shaft sleeves, and is connected with the connecting parts; the flange plate under the frame An anti-falling ring is hung on the upper sleeve; the inner diameter of the anti-falling ring is smaller than the outer diameter of the flange, and the outer diameter is larger than the outer diameter of the flange; the anti-falling circle is connected with the fan blade shank. The invention has wide wind coverage, low energy efficiency, long service life and low working noise, and can effectively prevent the fan blades from falling.

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.

Steering column comprising a cradle (21) mounted tilting on the body of the vehicle and receiving, in a deformable bearing (22), a sleeve (2) provided with a tube bearing the steering wheel.A clamping device (3) comprising a manoeuvring lever (32) bearing a clamping axle (31) and pressed against a bearing block (34) by a ramp connection (341) and by an escutcheon (33) with teeth (331).The bearing block (34), has a ramp (341) for each tooth (331) ending in a stop (343) projecting into the circular segments (335) between two teeth (331). One of the teeth (331) has, on its unclamping side, a damping element (334).

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 control system and method for an intelligent noise reduction refrigerator. The method comprises the steps that whether a person is in a room or not is detected; when it is detected that no person is in the room, the refrigerator operates in a normal mode; when a person is detected indoors, the indoor environment noise intensity is collected, and the sound intensity is alpha; when the environment noise intensity alpha is larger than the maximum noise intensity beta of operation of the compressor of the refrigerator, the refrigerator operates in a normal mode; and when the environment noise intensity alpha is smaller than or equal to the maximum noise intensity beta of operation of the refrigerator compressor, the refrigerator operates in a mute mode. The sound intensity in the environment can be detected, and the starting time and the rotating speed of the compressor are dynamically adjusted on the basis of meeting refrigeration and preservation by combining with the temperature sensor in the refrigerator body, so that a user cannot perceive the running noise of the refrigerator.

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.

The invention relates to the technical field of furniture, and discloses a drawer which comprises a drawer body and a sliding rail assembly, the drawer body is connected with an upper rail of the sliding rail assembly through a first limiting piece, a second limiting piece and a lock catch, and when the lock catch rotates to the position below the upper rail, the drawer body and the upper rail arelocked by the lock catch and cannot be detached. When the lock catch rotates to be not located below the upper rail, the drawer body and the upper rail are not locked by the lock catch and can be separated. Based on the structure, the drawer body and the sliding rail assembly are firmly, safely and reliably connected, meanwhile, disassembly and assembly are convenient, and production, overhaul and maintenance are facilitated. In addition, the invention further discloses a cabinet, and due to the fact that the drawer is adopted, the cabinet has the advantages of being convenient to produce andoverhaul, large in storage capacity, low in noise, good in quality and the like.

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.