39results about How to "Reduce motor load" patented technology

Provided is an image pickup lens that forms an image on an image pickup element with light from a subject. In the image pickup lens, a lens that is disposed on an image pickup element side is fixed in position, and a focusing lens group having a plurality of lenses including a lens closest to the subject is moved in an optical axis direction, thereby performing focusing.

Disclosed herein is a refrigerator which includes a body, a door configured to open and close a storage compartment and a door opening and closing apparatus. The door opening and closing apparatus includes a pair of intermittent gears configured to transmit the power from a first gear to a second gear of the door opening and closing apparatus and configured to prevent an external force from being transmitted from the second gear to the first gear while the external force is applied to open and close the door. This configuration, among other benefits, improves the durability of a door opening and closing apparatus.

An axial-flow wind wheel comprises three blades set on a hub, wherein, the end area of the blades is dishing toward to the costal air-in direction; the three blades use the rotary central axis of the wind wheel as center each other and they allocate equal-spaced or unequal-spaced in the 120degree+-15degree. The external diameter of the axial-flow is defined as D2, the hub diameter is defined as D1, the height of the blade Rm is defined as (D2-D1) / 2, the circumference diameter in which there is the beginning dishing place A is defined as D3, (D3-D1) / 2=(0.10-0.47)Rm. Since the high-middle part of the trailing edge change the distribution of pressure of the blades before the blade root part, the high pressure draught compartment of the blades flow direction low pressure surface advanced to make local pressure ascending, to reduce boundary layer separating, to make the boundary layer turn into turbulent flow before getting the front of the blade end, to reduce convolution noise and rotor wake, thereby having low noise and big air quantity.

A slewing-type working machine, including a base, an upper slewing body, a hydraulic motor slewing the upper slewing body, a hydraulic pump, a slewing operation device, a control valve controlling the hydraulic motor, pipe-lines connecting the hydraulic motor to the control valve, a hydraulic pressure source, communication valves switching communication and cutoff between the pipe-lines and a tank by pilot pressure, an electric motor, an electric storage device, communication selector valves on inlet sides of the communication valves, a switching control valve on an inlet side of the communication selector valves, and a controller. During slewing deceleration, the controller signals to switch the switching control valve to a connecting position and switch the communication selector valves to a pilot pressure supply position. In a slewing stopped state, the controller signals to switch the communication selector valves to a cutoff position and switch the communication valves to a communication cutoff position.

An improved motor includes a cylinder defining multiple exit holes of different diameters, which are respectively controlled by a resilient sheet having multiple branches to communicate with an air storage container. In operation, when a piston body conducts reciprocating motion in the cylinder, the compressed air produced in the cylinder can quickly enter the air storage container. The branches of the resilient sheet are subjected to different back force resulting from the compressed air in the air storage container, wherein the smallest branch of the resilient sheet is subjected to a smallest back force, so that the compressed air produced in the cylinder can enter the air storage container more easily through the smallest exit hole, so that the piston body can conduct reciprocating motion more smoothly and thus the performance of the air compressor can be increased.

An air circulation and ventilation apparatus for a food processing machine (70), and the air circulation and ventilation apparatus comprises: a motor (10) and a fan (30), in which the motor (10) is used for driving an agitating or pulverizing assembly and is arranged within a base of the machine, and a body (60) of the machine is disposed outside the base, and the gap between the body (60) and the outer side wall of the base forms an air inlet passage; the fan (30) is equipped with a driving motor and is arranged within the base, and under the effect of the fan (30), airflow enters the air inlet passage by means of an air inlet port (22) on the base and flows through the motor (10) within the base and is discharged from an outlet port (23) on the base. By independently and separately providing the motor (10) for driving the agitating or pulverizing assembly of the food processing machine (70) and the fan (30) for ventilation, the load on the motor (10) and the vibration of the food processing machine (70) maybe be reduced, while also reducing noise; the fan (30) drives the operation thereof, and can independently adjust the rotational speed thereof according to ventilation needs, thus preventing waste of resources; further, when an operation problem occurs with the motor (10), the motor (10) may be effectively cooled down, thus maintaining good heat-dissipation efficiency, thereby prolonging the service life of the food processing machine (70).