146results about How to "Solve the problem of temperature rise" patented technology

The invention discloses a low-pressure casting method for an automobile motor casing. The low-pressure casting method for the automobile motor casing includes the following steps that (1) a sand core structure of a spiral water channel is manufactured; (2) the sand core structure is placed on a lower mold body of a die-casting mold; (3) the automobile motor casing with the sand core structure of the spiral water channel is cast through a low-pressure casting device; (4) heat treatment is conducted on the automobile motor casing, then sand is vibrated out, and the automobile motor casing is provided with the complete spiral water channel; and (5) holes formed in the original sand core structure portion of the sidewall of the automobile motor casing are filled up through welding, so that the complete automobile motor casing with the spiral water channel is formed. The invention further discloses a motor casing structure. Through the low-pressure casting method for the automobile motor casing, the aluminum alloy low-pressure casting process is adopted and the spiral water channel is cast through the sand core of the spiral water channel, so that the cooling effect on a motor is guaranteed, the service life of the motor is greatly prolonged, the requirement for long-time working of an automobile can be met, and the weight of the whole motor is reduced by about 60%.

The invention discloses a magneto-electric speed regulator. The magneto-electric speed regulator comprises a permanent-magnet rotor and an electric-magnetic rotor and also comprises a current controller, wherein a uniform and fixed circumferential air gap is formed between the permanent-magnet rotor and the electric-magnetic rotor. By the magneto-electric speed regulator, speed regulation can be achieved on the condition of fixing the air gap, excessively large eddy current can be fed back to power utilization equipment or a power grid, and the problems of temperature rise and efficiency are solved.

The invention relates to medical instruments, in particular to a cooling device of an implantable heart assisting blood pump. The cooling device comprises a pump system and a driving system. The pumpsystem is provided with the blood pump and a pump case, and the driving system is provided with a stator and a rotor. The cooling device is characterized by further comprising heat directional conducting parts and vacuum heat insulating parts; the heat directional conducting parts are located on the periphery of the stator of the blood pump, and the vacuum heat insulating parts are located in thepump case of the blood pump. The heat directional conducting parts directionally conduct heat generated by the stator of the blood pump into blood. Outward radiation of the heat is reduced through thevacuum heat insulating parts, temperature rise of the surface of the blood pump is reduced, and heat damage to tissue is avoided. Meanwhile, as the specific heat capacity of the blood is very large and the heat dissipation function of the surface of the human body is very strong, the heat cannot cause increase the temperature of the blood. Vacuum is formed between the vacuum heat insulating layers, so that outward radiation of the heat is reduced. The problem of temperature rise of an implantable artificial heart-heart ventricle assisting system is effectively solved, and the temperature riseis completely within the human body physiological range after the implantable blood pump is implanted in the body.

The invention relates to the improvement of a speed-increasing gearbox of a wind driven generator, which is characterized in that: a gear transmission has 3 to 4 stages, wherein the last stage is a planetary gear transmission; the former stages are all double-circular-arc cylinder herringbone spiral gear transmissions. Compared with the conventional generally-used speed-increasing gearbox which mainly uses the planetary gear transmission, because the low-speed stages (1 to 3 stages) adopt double-circular-arc cylinder herringbone spiral gears with high transmission efficiency and a subsequent stage adopts the planetary gear transmission, the advantages of the double-circular-arc cylinder herringbone spiral gear transmission and the planetary gear transmission are combined together, thus the effective one-off life is long, the transmission efficiency is high and the volume is small; and moreover, the double-circular-arc cylinder herringbone spiral gear is used for the speed-increasing gearbox of the wind driven generator for the first time.

The invention provides a motor, belongs to the technical field of motors, and aims to solve the problems of poor heat dissipation and large influence of temperature rise on performance of the motor of the existing motor. The motor comprises a shell, a stator and a rotor component, wherein the stator and the rotor component are arranged in the shell; the rotor component comprises a rotating shaft and a winding arranged on the rotating shaft; the two ends of the rotating shaft protrude out of the shell; one end of the rotating shaft is provided with an outer flan blade; an inner fan blade is also arranged on the rotating shaft in a sleeving manner; the inner fan blade is positioned on one side of the winding and is arranged in the shell. The motor has the advantages of good heat dissipation effect, low motor temperature rise and superior performance.

The invention discloses a method for preparing AgSnO2 contact material by a spray co-deposition reaction, which comprises the following steps: 1, processing of Ag2O powder; 2, preparation of alloy fusant; 3, preparation of composite material by the spray co-deposition reaction; 4, in situ chemical processing of the composite material; and 5, preparation of sliver rear earth oxide contact materialby extrusion, rolling and drawing. The method of the invention has easy control, less pollution, and low production cost and can realize the industrialization production. The prepared AgSnO2 contact material has higher processability compared with the AgSnO contact material prepared by using a powder metallurgy method, an internal oxidation method and chemical precipitation process and the like, has fresh reaction interface of Ag and SnO2, can preferably solve the problem of temperature rising of the contact material and improve the comprehensive property of the material.

In a refrigerator, in order to provide a device for controlling a cooling air supply of a refrigerator which is capable of regularly maintaining a temperature distribution inside a chilling chamber in a short time by intensively discharging cooling air to a part having a relatively high temperature when a temperature of the part inside the chilling chamber rises due to lots of preserved foods, etc., a device for controlling a cooling air supply of a refrigerator includes a cooling air supply path formed at the upper portion of a mullion wall demarcating a chilling chamber and a freezing chamber and supplying cooling air ventilated by a ventilation fan to the chilling chamber, a cooling air guide path diverged from the cooling air supply path and guiding the cooling air to each part of the chilling chamber, a cooling air duct connected to the cooling air guide path and discharging the cooling air to each partition demarcated by shelves of the chilling chamber and a cooling air control means intensively discharging the cooling air to a partition at which a load has occurred of the partitions demarcated by the shelves of the chilling chamber.

An edge-lit backlight device is disclosed in the present disclosure. The edge-lit backlight device comprises a light guide plate, light sources and a backplate. The light guide plate comprises two wedged plate portions and a rectangular plate portion, the two wedged plate portions are disposed at two sides of the rectangular plate portion respectively, and the wedged plate portions and the rectangular plate portion each comprise a light incident surface and a bottom surface. The light sources are disposed adjacent to the light incident surfaces of the wedged plate portions and the rectangular plate portion respectively. A liquid crystal display (LCD) is also disclosed in the present disclosure. The edge-lit backlight device and the LCD of the present disclosure are simple in structure, allow for regional control functions and can dissipate heat generated by the light sources in a timely and efficient way.

The invention relates to a lithium-ion power battery, comprising a laminated battery cell (16). The laminated battery cell (16) comprises negative pole pieces (9), positive pole pieces (10) and insulating diaphragms (7), wherein, the negative pole pieces (9) and the positive pole pieces (10) are sequentially arrayed at intervals and are separated by the insulating diaphragms (7); the negative pole pieces (9) are all connected with negative pole lug connectors (21) by fixing parts (20); the positive pole pieces (10) are all connected with positive pole lug connectors (22) by the fixing parts (20); paper clip films (8) are filled between the positive pole pieces (10) and the insulating diaphragms (7) connected at both sides; the paper clip films (8) are filled between the outermost insulating diaphragm (7) and the outermost negative pole piece (9); a heat conduction film (6) is filled outside the outermost insulating diaphragm (7). The lithium-ion power battery features lower internal resistance, high discharge rate, high charge efficiency, long cycle life and high safety.