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431results about How to "Improve cooling efficiency" patented technology

Method and device for controlling inverter compressor

InactiveCN101539151AImprove cooling efficiencyavoid overshoot
The invention discloses a method for controlling an inverter compressor. According to the method, a target temperature and a dividing temperature point are preset, and a sensor monitors an actual temperature value. The method comprises the following steps that: a controller judges whether the difference between an actual temperature and the target temperature is zero, and the compressor operates at a minimum frequency for a certain period if the difference between an actual temperature and the target temperature is zero; the controller judges whether the target temperature is reached, and thecompressor stops operation if the target temperature is reached, or the controller initializes a PID parameter to allow an inverter to make the compressor start to raise frequency quickly if the target temperature is not reached; the controller judges whether the preset dividing temperature point is reached, and the PID parameter is adjusted if the preset dividing temperature point is reached, orthe PID parameter is kept constant if the reset dividing temperature point is not reached; and the controller judges whether the target temperature is reached, and the compressor operates at a constant frequency and the frequency inversion is finished if the target temperature is reached, or the compressor raises frequency while keeping the original PID parameter if the target temperature is not reached. Correspondingly, the invention also provides a device for controlling the inverter compressor. The method and the device can realize a quick, energy-saving and stable frequency inversion process at the same time.
Owner:HAIER GRP CORP +1

OLED display device

The invention provides an OLED display device. A plurality of projections are arranged on one surface of a side, positioned close to an OLED device, of a cover plate substrate; outer surfaces of the cover plate substrate and the plurality of projections are wrapped with heat conduction layers, heat radiation area and heat radiation efficiency of a cover plate can be increased, service life of the OLED device can be prevented from being reduced due to heat accumulation, and the cover plate is enabled to be high in mechanical strength; a first heat conducting and light shielding layer including graphene and light shielding material is coated on an outer side of sealing gum, on an area, positioned outside the sealing gum, of the cover plate and on an area, positioned outside the sealing gum, of a base plate; a second first heat conducting and light shielding layer is coated on an area, positioned outside a part corresponding to the OLED device, of a bottom part of the base plate; the OLED display device can be prevented from all-around light leakage while air tightness of the OLED device can be enhanced, external moisture can be effectively prevented from permeating the OLED device, the service life of the OLED device can be prevented from being affected, heat radiation efficiency of the OLED display device can be further improved due to excellent thermal conductivity and electrical conductivity of the graphene material, the OLED display device can be free from static electricity, and product quality can be improved.
Owner:TCL CHINA STAR OPTOELECTRONICS TECH CO LTD

Intelligent pipeline pressurized type network cabinet and server cooling system

Disclosed is an intelligent pipeline pressurized type network cabinet and server cooling system. The system comprises a central air conditioner, an air compressor and a network cabinet. The central air conditioner is successively connected with the air compressor and the network cabinet through an air channel, the air channel is divided into a plurality of branch air channels after entering the network cabinet, each branch air channel is arranged near to a server on each shelf in the network cabinet, the cold air nozzles at the end portions of the branch air channels are adjustably arranged at the hot spot positions of the servers according to needs, the connection position of the branch air channels and the main air channel is provided with an adjustable valve, the servers are provided with temperature sensors, the adjustable valves and the temperature sensors are connected with a remote intelligent manager, and the remote intelligent manger is electrically connected with a control interface. According to the invention, cold air is directly transmitted to the centralized hot spot of a data center through a pressurized pipeline for fixed point refrigeration on the hot spot, such that the waste of the cold air during the process of reaching the hot spot is reduced, the hot spot can be accurately aligned, and the refrigeration efficiency can also be improved. Besides, through intelligent control of the control interface, supply according to needs is realized, unnecessary waste is not caused, and the purposes of saving energy, reducing emission and improving economic benefits can be achieved.
Owner:深圳中鹏新电气技术有限公司

Thermal-conductive silicone grease with high thermal conductivity and high temperature resistance and preparation method thereof

Disclosed is a thermal-conductive silicone grease with high thermal conductivity and high temperature resistance. The silicone grease comprises, by weight, 60 to 80% of nano modified conductive filler, 15% to 30% of polysiloxane, 1% to 20% of silicone oil and 1% to 5% of additives. The nano modified conductive filler is an inorganic filler through silver powder surface modification treatment; the polysiloxane is an active silicone oil compound; the silicone oil is one or two of dimethyl modified silicone oil and benzyl modified silicone oil; and the additives are one or more of sodium hexametaphosphate, trisodium phosphate and sodium tripolyphosphate. According to the thermal-conductive silicone grease with high thermal conductivity and high temperature resistance, oanoscale conductive filler coated silver powder is the filler, and the prepared thermal-conductive silicone grease with high thermal conductivity and high temperature resistance is not dried, hardened or melted at a temperature of 300 DEG C or even more than 320 DEG C for a long time, had no flavor or odor, and has no corrosiveness to metals of iron, copper, aluminum and the like. The thermal-conductive silicone grease with high thermal conductivity and high temperature resistance has the advantages of being capable of prolonging the service life, being insulating, shockproof, radiation aging resistant and the like, and accelerating the heat conduction speed of electrical devices and improving radiation efficiency.
Owner:邵成芬

Heat dissipation protection device for novel electromechanical equipment

The invention relates to the technical field of heat dissipation equipment and in particular relates to a heat dissipation protection device for novel electromechanical equipment. The heat dissipationprotection device comprises a shell, wherein two transverse rods are fixedly arranged on the upper side inside the shell; a second belt wheel and a gear are connected to the outer side of a fixing shaft from top to bottom in a sleeving manner; a motor is fixedly arranged in the middle of the upper end on an inner wall of the shell; a first belt wheel is in transmission connection with the secondbelt wheel through a belt; chutes are formed in two sides at the upper end of a two-sided rack; a slide block matched with the chutes is arranged at the lower end of a vertical rod; an air cooler is arranged inside the box body; a U-shaped pipe is arranged at the lower end of a connecting pipe; a plurality of sprayers are arranged on the inner side of the U-shaped pipe; a suction fan is arranged on one side of the shell; and an exhaust fan is arranged on one side, which is far away from the suction fan, of the shell. The heat dissipation protection device disclosed by the invention is uniformin heat dissipation, high in heat dissipation efficiency and simple in structure, the service life of the electromechanical equipment can be greatly prolonged, and the cost is reduced.
Owner:成都海逸机电设备有限公司

Communication equipment chassis

The invention discloses a communication equipment chassis. The communication equipment chassis comprises a chassis body and a radiator, wherein the radiator comprises a base plate and a radiating module set; the base plate serves as a back sealing plate of the chassis body; the radiating module set is connected with the back of the base plate and comprises a plurality of radiating modules; each radiating module comprises a plurality of radiating tubes and a plurality of radiating fins; the plurality of the radiating tubes are connected with the back of the base plate; and the plurality of the radiating fins are connected by the radiating tubes. In the communication equipment chassis, a section bar radiator in the conventional equipment chassis is changed into the plurality of the radiating modules which comprise the radiating tubes and the radiating fins; the radiating modules form the radiating module set; the radiating fins are connected by the radiating tubes, so a radiating area is greatly increased compared with the section bar radiator on the premise of the same space volume by increasing the numbers of the radiating fins and the radiating tubes; an overall radiating area is further increased by increasing the number of the radiating modules; the radiating efficiency is increased; and the radiating equipment on the communication equipment chassis is met.
Owner:ALLWIN TELECOMM

Pneumatic GM refrigerating machine and control process thereof

The invention relates to a pneumatic GM refrigerating machine and a control process thereof. The pneumatic GM refrigerating machine comprises a driving cylinder, a refrigerating cylinder, a driving piston, a push piston and a refrigeration capacity heat exchanger, wherein the driving cylinder is vertically connected with the refrigerating cylinder, the driving piston is vertically connected with the push piston, the driving piston can slide in the driving cylinder, a driving cavity is formed between the driving cylinder and the driving piston, the push piston can slide in the refrigerating cylinder, the inner part of the refrigerating cylinder is divided into a room temperature cavity and a low temperature cavity by the push piston, the refrigeration capacity heat exchanger is connected with the lower temperature cavity, the room temperature cavity is connected with a low-pressure gas pipeline and a high-pressure gas pipeline, the driving cavity is at least connected with a low-pressure gas storage and a high-pressure gas storage. Compared with the prior art, on the basis of the original GM refrigerating machine, the low-pressure gas storage and the high-pressure gas storage are arranged on the driving cavity, the movement of the piston is driven to move by the gas in the gas storages, so that the refrigerating efficiency of the refrigerating machine is increased. The pneumatic GM refrigerating machine is simple in structure and easy to operate.
Owner:TONGJI UNIV

Single-compressor secondary dynamic refrigeration cold-storage air-conditioning system and refrigeration method thereof

The invention discloses a single-compressor secondary dynamic refrigeration cold-storage air-conditioning system and a refrigeration method thereof. An exhaust pipe of a compressor of the refrigeration cold-storage air-conditioning system is communicated with a solenoid valve I sequentially through a gas-liquid separator I, a condenser and a liquid accumulator. The single-compressor secondary dynamic refrigeration cold-storage air-conditioning system further comprises a primary refrigeration device, a secondary refrigeration device, a cold exchange and cold supply air-conditioning device. An evaporator of the primary refrigeration device is immersed in a heat exchanger, an outlet of the solenoid valve I is in series connection or parallel connection with the evaporator and a cold-storage barrel and then is communicated with an inlet of a gas-liquid separator II, an outlet of the heat exchanger is communicated with an inlet on the upper portion of the cold-storage barrel sequentially through a water pump I and a solenoid valve II, an outlet on the lower portion of the cold-storage barrel is communicated with an inlet of the heat exchanger, and a liquid outlet and a liquid inlet of the cold-storage barrel are communicated with an inlet and an outlet of the cold exchange and cold supply air-conditioning device. The refrigeration method comprises the steps of compression condensation, primary refrigeration, secondary ice making and cold exchange and cold supply air-conditioning. The single-compressor secondary dynamic refrigeration cold-storage air-conditioning system has the advantages of being high in refrigeration efficiency, low in device primary investment and running cost and high in reliability.
Owner:YUNNAN ZHIGU NEW ENERGY TECH DEV CO LTD

Novel LED (light emitting diode) projection lamp

The invention discloses a novel LED (light emitting diode) projection lamp which comprises a rear lamp housing, wherein an opening is formed in the front end of the rear lamp housing; the front end of the rear lamp housing is provided with a front lamp cover in a butting manner, and a lamp cavity is formed in the front lamp cover; a luminous assembly and a reflection cover for reflecting light are arranged in the lamp cavity; the novel LED projection lamp is characterized in that a rainwater temperature control probe for detecting whether raining occurs outside is arranged on the outer wall of the rear lamp housing; an air cooling device is arranged in the lamp cavity outside the reflection cover and comprises an air inlet pipe and an air exhaust pipe which are oppositely arranged on two inner sides of the rear lamp housing and are communicated with the outside; an air suction fan which is connected with the air inlet pipe and is used for blowing external air into the lamp cavity and an air exhaust fan which is connected with the air exhaust pipe and is used for exhausting hot air in the lamp cavity are respectively arranged at the bottom of the rear lamp housing; electromagnetic valves for controlling the air inlet pipe and the air exhaust pipe to be switched on and switched off are arranged in the air inlet pipe and the air exhaust pipe. Due to the arrangement, the novel LED projection lamp is high in heat dissipation performance and waterproofing performance.
Owner:广东恒辰光电科技有限公司

Rapid cooling type aircraft ground air conditioning unit and control method thereof

The invention discloses a rapid cooling type aircraft ground air conditioning unit and a control method of the rapid cooling type aircraft ground air conditioning unit. The highest cooling speed and the largest cold quantity input improve the rapid cooling and cold supplying capacity of the aircraft ground air conditioning unit, processed fresh air with a certain flow, cleanliness, proper temperature and high hydrostatic pressure is provided rapidly for an aircraft, the fresh air is fed to a cabin of the aircraft through a special air feeding hose, the fastest and best cooling effect is achieved for the cabin of the aircraft which stops at an aircraft boarding bridge for a short time, physiological requirements of staff in the cabin of the aircraft are met, high comfort level is achieved, the cooling requirements of precision devices in the cabin are met, a comfortable environment is provided for the staff in the cabin and aircraft operators, the metal state of the aircraft operators is improved, and the safety of driving the aircraft is improved. Meanwhile, fuel consumption produced when the aircraft waits on the ground is reduced, the service life of a self-matched expensive air conditioning system of the aircraft is prolonged, the pollution to air environment of an airport is reduced, and high economic and social benefits are achieved.
Owner:GUANGDONG SHENLING ENVIRONMENT SYST CO LTD

Intelligent single line production system for material plasticizing

The invention discloses an intelligent single line production system for material plasticizing. The intelligent single line production system is used for forming plastic particles into plastic products of hollow structures in an extrusion mode and comprises an extrusion forming machine, a cooling mechanism, a discharge drawing mechanism, a cutting mechanism, a detecting module, a controller and an operation display panel. The extrusion forming machine comprises a machine base, a motor, an extrusion screw, a hopper, a barrel, a die head and heating parts. The cooling mechanism is provided with a plurality of spraying heads. The discharge drawing mechanism is located at the tail end of the cooling mechanism and conveys the plastic products to the cutting mechanism. The detecting module comprises a plurality of temperature sensors, and the temperature sensors detect the temperature of the cooled plastic products at the positions of the barrel, the die head and the cooling mechanism respectively. The controller controls the corresponding heater and the corresponding spraying head to work according to the detected temperature, and therefore the barrel and the die head can maintain the corresponding control temperature, and the spraying heads can provide cooling water of the corresponding flow. According to the invention, the heating temperature of plastic and the flow of the cooling water are automatically controlled, the production efficiency is high, and the quality of the plastic products is high.
Owner:杜崇铭
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