32results about How to "Effective control of temperature rise" patented technology

This invention relates to an electromotive car carried closed switch reluctance motor including a shell, a stator, a rotor, internal and external air-cooling radiation units and a water-proof unit characterizing that the radiation unit enables the stator winding to get dual radiation of air cooling outside and inside at the same time, besides, special sealing devices are set at the end of the motor, the shaft end and the connection port to prevent water.

The invention discloses a meat chopping machine. The meat chopping machine comprises a housing, a driving mechanism, a screw shaft, a tank body, a refrigerating machine and a vacuum pump, wherein the tank body is fixedly arranged at the top end of the housing; a feed opening is formed in the top of the tank body; a discharge opening is formed in one side of the tank body; the screw shaft is arranged in the tank body; screw blades are fixedly connected to the screw shaft; one end of the screw shaft is connected with the driving mechanism through a main transmission shaft; the driving mechanism, the refrigerating machine and the vacuum pump are arranged in the housing; refrigerating space is formed in the inner wall of the tank body; the refrigerating space communicates with the refrigerating machine; and the vacuum pump communicates with the tank body. According to the meat chopping machine disclosed by the invention, the refrigerating machine and the tank body are connected, so that the temperature rise of materials, which is generated during operation, can be effectively controlled, and the taste, service life and the like of products cannot be affected due to over high temperature of the materials; and the vacuum pump is arranged, so that vacuum treatment can be performed in the tank body, raw materials in the tank body are compact in structure and are in an oxygen-free state after the vacuum treatment, bacteria, micro-organisms and the like are not liable to multiply, the quality of the products is improved, and the storage life is prolonged.

The invention discloses a bearing with heat dissipation and lubricating functions, which comprises an outer ring, an inner ring and a retainer, the rolling elements are rotated and connected at equal intervals on the retainer, the length of the inner ring is longer than that of the outer ring, and the fixed sleeve of the inner ring is provided with compressed air The impeller also includes an airflow cover, which covers the compressed air impeller and is fixed on the outer ring. The rolling body is provided with a first central hole and a plurality of dispersion holes. The center hole communicates with the round hole when the cage rotates with the inner ring. The airflow cover is also equipped with an air inlet. A roller coating lubrication unit is installed between two adjacent rolling elements to rotate with the rolling elements. The roller coating lubrication unit is used Coating graphite to the rolling body; the invention can realize the automatic heat dissipation function of the bearing, effectively control the temperature rise of the bearing, and realize automatic lubrication without manually adding lubricating oil, with simple operation and high efficiency, which is beneficial to prolong the service life of the bearing, and Take good care of the bearings.

The invention provides a large-scale high-precision gear compound grinding center. The external gear grinding function module is arranged on the right side of the rotary table, including a bed, a column, a grinding wheel frame, a grinding wheel dressing device, an external gear grinding device, and on-machine measurement. Device; the internal gear, internal hole and end surface grinding functional modules are arranged on the left side of the rotary table, including the bed, column, internal hole and end surface grinding device, and internal tooth grinding device. The invention realizes one-time clamping of large gears, completes the grinding and precision detection of tooth surfaces, inner holes and end faces, and solves the difficulties of lifting, clamping, calibration and detection of large gears, as well as high processing costs, low production efficiency and difficult precision. The problem of guarantee greatly reduces the auxiliary time between processes, reduces the number of machine tools and fixtures, shortens the processing cycle, saves the operating area, significantly improves economic benefits, and completely changes the traditional processing of producing large gears with multiple large machine tools and gear gauges Way.

The invention discloses a heat conduction passage-based cooling system and centralized heat dissipation method for a spindle of a precision machine tool. The cooling system comprises heat conduction passages, a cooling pipeline, valves and a heat dissipation device; in allusion to a mechanical spindle and a motorized spindle of the precision machine tool, the heat conduction passages are established in bearing blocks and a spindle shell in a radial direction and a high-efficiency heat conduction material fills each heat conduction passage, and thus, the emitted heat of each internal heat source can be rapidly and efficiently transmitted to the outside of the spindle in a manner of heat conduction, and then centralized cooling is performed; and by taking maximization of heat dissipation intensity as a target, the reasonable layout of the heat conduction passages is determined according to different temperature fields in the axial direction and the circumferential direction of each of bearings at the front end and the rear end of the spindle and in the axial direction and the circumferential direction of a motor so as to achieve a balance between temperature rises in the axial direction and the circumferential direction of a spindle system and room temperature. The cooling system and centralized heat dissipation method disclosed by the invention are capable of overcoming abuses that efficiency is low, and the heat still can be absorbed by the spindle shell and installation parts by employing a traditional heat dissipation method, and have a better engineering application prospect.

The invention discloses a flexible heat pipe used for cooling the surface of a rotating shaft of a high-speed motorized spindle. The flexible heat pipe (7) comprises a substrate (701), a runner plate(702) and a cover plate (703), the substrate (701), the runner plate (702) and the cover plate (703) are sequentially bonded from top to bottom, wherein the runner plate (702) is provided with a heatpipe runner, and a sealed heat transfer fluid is filled in the heat pipe runner. The flexible heat pipe is adhered on the surface of the rotating shaft by bending in use. The temperature of the rotating shaft is obviously increased because of the loss of an internal motor, the generation of heat by friction of front and rear bearings and wind motor of the rotating shaft at the operation state of the motorized spindle. The provided flexible heat pipe has an excellent heat transfer performance at the high centrifugal force, the local temperature rise of the rotating shaft is effectively controlled, the thermal deformation caused by the uneven temperature distribution is reduced, the influence of thermal deformation of the rotating shaft on the machining precision of the high-speed motorizedspindle is effectively controlled, meanwhile, the original structure of the motorized spindle is less changed, and the flexible heat pipe has the advantages of high reliability, low cost, easiness inpromotion and implementation and the like.

The invention relates to an electric vehicle-mounted fully enclosed internal liquid-cooled and external air-cooled switched reluctance motor, which includes a sealed casing, a stator, a rotor, an internal liquid-cooled and external air-cooled heat dissipation mechanism and a motor waterproof structure, and is characterized in that the heat dissipation mechanism The stator winding can obtain the double heat dissipation effect of internal liquid cooling and external air cooling at the same time, thereby solving the problem of poor heat dissipation of the stator winding. In addition, a special sealing device is added at the motor end cover, shaft end, wiring port, etc. to achieve a good motor waterproof purpose. The fully enclosed internal liquid-cooled and external air-cooled switched reluctance motor for the electric vehicle of the present invention has large torque, good dynamic performance, high efficiency and energy saving, low noise, and reliable airtightness. This technology can effectively control the temperature rise when the motor is running at high speed, especially the temperature rise at the end of the stator winding. It can be effectively waterproof and ensure the safe operation of the motor in rainy days or when there is water on the road, thereby improving the working efficiency of the motor, the safety performance and protection level of the motor, and prolonging its service life.

The invention relates to a permanent magnet synchronous motor temperature control system for new energy vehicles, which includes a permanent magnet synchronous motor and a cold air supply mechanism. The permanent magnet synchronous motor includes a casing, a stator, a motor shaft and a rotor. Cavity A and cavity B; the cold air intake passage includes a cold air passage A arranged on the motor shaft and a plurality of cold air passages D arranged on the rotor, the cold air passage A communicates with the cold air supply mechanism through a rotary joint and a rubber pipe A, The cold air channel A communicates with the middle of each cold air channel D through multiple radial cold air channels; the cold air exhaust channel includes exhaust channel A and exhaust channel B arranged on the casing, and the exhaust channel A communicates with the cavity , the exhaust passage B communicates with the cavity B, and the exhaust passage A and the exhaust passage B are respectively provided with a gas check valve A. The heat dissipation condition in the motor can be obviously improved, the cooling efficiency is high, the cooling effect is remarkable, and the temperature rise of the motor can be effectively controlled for a long time.

The invention relates to variable frequency controller cooling technology, in particular to a variable frequency controller cooling device for a shutter vehicle used for a coal mine, which is used for effectively cooling the heat produced by a variable frequency controller. The device is provided with a circulating power system, a water tank, and a circulating water channel, the water tank is connected to the circulating water channel of cooling water via a circulating motor of the circulating power system through a pipeline, and the circulating water channel is placed on the bottom of the variable frequency controller. The device takes away the heat produced by the variable frequency controller through the circulating water channel of the cooling water arranged on the bottom of the variable frequency controller, drives a circulating water hydraulic motor to ensure that the cooling water finishes the circulation by means of the power produced by the running driving of a vehicle body, drives a fan through a fan hydraulic motor to make the fan cool a circulating water heat exchanger, stores the cooling water through a cooling water tank, and utilizes the surface of the cooling watertank to assist in heat dissipation. The device can solve the problems such as effective cooling of the variable frequency controller and so on, effectively control the working temperature rise of thevariable frequency controller, and ensure that the variable frequency controller normally works within the specified temperature range.

The invention discloses a heat dissipation method of a roller having a heat dissipation function. The roller comprises a roller body; self-heat-dissipation bearings are arranged at one end and the other end of the roller body; each self-heat-dissipation bearing comprises an outer ring, an inner ring and a retainer, rolling bodies are rotationally connected to the retainer at equal intervals, the length of the inner ring is larger than that of the outer ring, a roller coating lubricating unit rotating along with the rolling bodies is arranged between every two adjacent rolling bodies, and the roller coating lubricating units are used for coating the rolling bodies with graphite. According to the method, the automatic heat dissipation function of the bearings can be realized, the temperaturerise of the bearings can be effectively controlled, automatic lubrication can be realized, lubricating oil is not required to be added manually, operation is easy, the efficiency is high, the servicelife of the bearings can be prolonged, and the bearings are better protected.

The invention discloses an electric spindle core cooling structure and system. An electric spindle core is provided with a plurality of U-shaped cooling units consisting of straight-hole channels; the inflow channel inlet and reflow channel outlet of each cooling channel unit are formed in a staggered way in the back end face of the electric spindle core; a connecting channel is formed inside the electric spindle core close to a front bearing to connect the inflow channel with the reflow channel; specific to the aim of realizing leading-in and leading-out of a cooling channel unit cooling medium, a shaft head flange type multi-channel high-speed rotary joint is tightly connected with the back end face of the conventional electric spindle core through a back bearing sleeve, an inflow channel header and a reflow channel header are provided, and an electric spindle core forced circular cooling system is constructed with an oil-water cooling system. By adopting the electric spindle core cooling structure and system, direct, rapid and efficient forced circular cooling of the electric spindle core can be realized, the problem of heat dissipation caused by long-term high-power processing of an electric spindle is solved, thermal deformation of the electric spindle core is reduced, and the heat stability of the electric spindle is enhanced.

The invention discloses a 12kv switch cabinet capable of controlling the temperature rise, which comprises a bottom base, a cabinet body and a top base, wherein the outer side of the cabinet body is fixedly equipped with a current controller and a temperature and humidity controller, the bottom base and the top base are fixedly installed at the bottom end and the top end of the cabinet body respectively, and both the bottom base and the top base are internally provided with a forced ventilation device. According to the 12kv switch cabinet structure capable of controlling the temperature rise,the design of the ventilation channel of the switch cabinet is optimized, the measure of combining forced air cooling and autonomous ventilation is adopted to promote air convection in the switch cabinet, the current controller is actively started at 70% of the rated current, and the temperature and humidity controller is actively started at 60% of the relative humidity, so that the temperature rise is controlled in a mode that the part which is possibly touched in normal operation is less than 70 DEG C and the temperature rise is less than 30 DEG C, and that the part which cannot be touched in normal operation is less than 80 DEG C and the temperature rise is less than 40 DEG C. Therefore, the temperature rise of the 12kv switch cabinet can be effectively controlled, and thus the 12kv switch cabinet is effectively protected.