44results about How to "Reduce cooling burden" patented technology

The invention discloses an LED daylight lamp device capable of directly replacing a fluorescent lamp, relating to the technical field of lighting. The LED daylight lamp device structurally comprises an LED light tube and an external LED power supply, wherein two ends of the LED light tube are respectively provided with an end cover in a connecting manner, inner ends of two terminals arranged on the same end cover are in short circuit through a conducing piece, the light tube is provided with a DC input end, the external LED power supply is provided with a starter interface terminal and a DC output end, and the DC output end is detachably and electrically connected with the DC input end through a power wire. The LED power supply can be directly installed on a place of an original starter and matched with an original starter interface, the LED light tube can be directly installed on a place of an original fluorescent lamp, thus any circuit is not changed, the LED power supply and the LED light tube can be rapidly replaced, and the LED daylight lamp device is convenient and practical; and the LED power supply is arranged on the place of the original starter of a lamp panel, because the LED power supply is arranged externally, the LED daylight lamp device has the characteristics of easiness in passing the safety, good quality of emergent light, and the like.

The invention discloses a novel hybrid refrigeration cycle system. The novel hybrid refrigeration cycle system comprises an evaporator, an output end of the evaporator is divided into two branches, one branch is connected with an input end of a compressor while the other branch is connected with an input end of a booster, an output end of the compressor is connected with an input end of a condenser A, an output end of the condenser A is connected with an input end of the evaporator, an output end of the booster is connected with a secondary flow inlet of an ejector, and an output end of the ejector is connected with an input end of a condenser B. An output end of the condenser B is divided into two branches, one branch is connected with the input end of the evaporator, and the other branch sequentially passes through a pump and a generator to be connected with a primary flow inlet of the ejector. Compression type refrigeration cycle and ejection type refrigeration cycle of a traditional automobile air conditioner are in parallel operation to share one evaporator, a novel hybrid refrigeration cycle way is provided to take advantages of the ejection type refrigeration technology, and the problems caused by single use of a traditional ejector are solved by adoption of the compressor.

The invention discloses a portable power source charging method, a power source adapter and a portable power source. The portable power source charging method is applied to the power source adapter, and comprises the steps of: communicating with the connected portable power source by a charging handshake protocol, and establishing a communication connection with the portable power source; receiving a target charging parameter sent by the portable power source and required for charging, wherein the target charging parameter is related to the series-parallel mode of a battery pack inside the portable power source; and adjusting a charging parameter for the portable power source according to the target charging parameter. By adopting the method, the charging parameter of electric energy output by the power source adapter can be matched with the charging demand of the portable power source, the voltage conversion process of the portable power source on the charged electric energy is reduced, and the purposes of reducing the charging loss of the portable power source and reducing the heat dissipation burden of the portable power source are fulfilled.

The invention discloses a light-emitting diode (LED) daylight lamp capable of directly replacing a fluorescent lamp, and relates to the technical field of lighting. The LED daylight lamp comprises a tube, end covers, and an external LED power supply; the end covers are arranged on two end parts of the tube; the external LED power supply is electrically connected with the tube; the end covers are respectively provided with two terminals; inner ends of two terminals on the same end cover are in short circuit through a conducive element; and the tube is provided with a direct current (DC) input end. Compared with the prior art, the LED daylight lamp can be directly arranged at the position of the original fluorescent lamp, circuits are not required to be changed, the change can be easily and quickly carried out, and the LED daylight lamp is convenient and practical; the power supply is externally arranged, so that no glare, no shadow and uniform and mild light transmission can be realized; when one end is electrified, the other end is absolutely safe when touched by a hand; the heat of the power supply is dissipated outside the light, the radiating burden of the tube is lightened and the service life of the tube is prolonged; and reclamation cost can be saved and the safety standard is easily met.

The invention discloses a speed regulating method for a fan. A BIOS is adopted to detect the operating status of a BMC.The operation of speed regulating for the fanis continued by using the BMC when the operating status of the BMC is normal, and the speed regulating for the target fan is completed by using the BIOS when the operating status of the BMC is abnormal. Therefore,an additional single chip microcomputer can be omitted and heat dissipation burdens of a device can be reduced, and furthermore, when the operating status of the BMC is abnormal, the BIOS can still be used for completing the speed regulating for the fan and the heat dissipation performance of the device is effectively ensured. The invention further discloses a speed regulating system and device for the fan and a computer readable storage medium. The technical effects of the speed regulating method for the fan can also be achieved by the speed regulating system and device for the fan and the computer readable storagemedium.

The invention discloses an ultrasonic welding machine with a temperature shock resistance function. The ultrasonic welding machine comprises a welding head, a servo motor driving mechanism, a support, a base and a rack. The support is made of carbon steel; the base is used for bearing a product and is provided with a containing cavity for containing the product to be welded; the rack is used for bearing the support and the base; the rack comprises a working table in contact with the base and four supporting legs which are used for supporting the working table and located on the lower portion of the working table; and the rack is of a hollow structure, the hollow supporting legs and the hollow working table are connected into a cavity, one supporting leg is connected with a first water storage tank through a water inlet pipe, and the other supporting leg is connected with a second water storage tank through a water outlet pipe. The mounting height of the first water storage tank is larger than that of the second water storage tank, and one side wall of the first water storage tank and one side wall of the second water storage tank are transparent and provided with scales; and the top face of the first water storage tank and the top face of the second water storage tank are each provided with a hand hole. The ultrasonic welding machine is simple in whole structure, high in practicability, long in service life and easy to use and popularize.

A high-precision printed circuit board is disclosed. The invention relates to the circuit board technology field. The printed circuit board comprises a circuit board body. The circuit board body is formed by a circuit layer, an insulating layer and a heat conduction layer. A lower portion of the circuit layer is provided with the insulating layer. A lower portion of the insulating layer is provided with the heat conduction layer. An internal portion of the insulating layer is provided with several cooling fins. The cooling fins are provided with through holes used for placing electronic component pins. The printed circuit board possesses high precision and simultaneously has a good heat dissipation function. Faults brought by heating after the circuit board is operated are reduced and applicability is high.

The invention relates to the field of cascade refrigeration, and provides a four-stage cascade refrigerating device with a multi-stage water cooler. The four-stage cascade refrigerating device cascades by four pieces of relatively independent refrigerating circulation. A water cooler is independently arranged on a second-stage compressor high-temperature gas exhaust pipeline, a third-stage compressor high-temperature gas exhaust pipeline and a fourth-level compressor high-temperature gas exhaust pipeline of the cascade refrigerating circulation, cheap cooling water which can be easily obtainedand is out of a system is introduced, and therefore, a refrigeration quantity and refrigeration efficiency can be effectively improved. Meanwhile, a precooling heat regenerator and an undercooling heat regenerator are configured in a second-stage high-temperature pipeline, a third-stage high-temperature pipeline and a fourth-stage high-temperature pipeline of the cascade refrigerating circulation, so that refrigeration efficiency can be improved, and the safe operation of a compressor can be guaranteed.

The invention relates to the technical field of aerospace craft aerodynamic heat ground simulation test devices, in particular to an arc heater rear end cover. The arc heater rear end cover comprises a base body, an auxiliary air channel and a cooling water channel. The base body is of an integrated sheet-shaped disc structure. The auxiliary air channel comprises a plurality of branch air channels, each branch air channel is spirally arranged around the axis, and the branch air channels penetrate through the two end faces of the base body. The cooling water channel is arranged in the base body in a back-to-back disc shape and distributed between the two end faces of the base body. The branch air channels enable cold air injected by the auxiliary air channel to be the same as or similar to the rotating direction of an arc, the auxiliary swirl performance can be improved, the rotating speed of the arc is increased, the residence time of the single-point arc on the inner wall face of an electrode is shortened, and the cooling burden of a heater electrode is relieved. High-pressure cooling water cools the surface of the heated side of the base body through the back-to-back disc-shaped cooling water channel, burning loss of the wall face is reduced, and the cooling performance of the rear end cover is improved.

The invention belongs to the technical field of lighting equipment, in particular to industrial and mining lighting equipment. The industrial and mining lighting equipment comprises a light-emitting module, a radiator, a power source and a power source box. The light-emitting module is arranged on the bottom face of the radiator, the power source box is installed above the radiator in a suspendedmode through an installation piece, a plurality of heat dissipation holes are formed in the side wall of the power source box, and the power source is installed in the power source box and electrically connected with the light-emitting module. Due to the fact that the plurality of heat dissipation holes are formed in the power source box, heat generated by the power source can be dissipated from the heat dissipation holes, on the premise that heat dissipation of the power source is guaranteed, the heat dissipation burden of the radiator is reduced, the heat dissipation requirements of the light-emitting module are effectively guaranteed, the service life of the industrial and mining lighting equipment is remarkably prolonged, and the light attenuation of the industrial and mining lightingequipment is remarkably reduced. The power source is separated from the radiator through the blocking effect of the wall surface of the power source box and the assembly gap, thereby guaranteeing thatthe radiator can timely dissipate heat, enabling the power source box to avoid the impact on the heat dissipation performance of the radiator, and enriching the multifunctionality of the power sourcebox.

The invention discloses a bearing of an electric fan driving motor and relates to the technical field of the bearings of the electric fan driving motors. The bearing comprises the electric fan drivingmotor, a rotary shaft, an electric fan driving motor shell and the like; an external bearing ring is fixed on an inner wall of the electric fan driving motor shell through a connecting block; a second limiting ring has a fixing effect on a hollow annular pipe; a limiting bulge has a limiting effect on an inner-layer bearing fixing ring and a rotary shaft penetrates into an inner-layer bearing ring; when the rotary shaft rotates, the inner-layer bearing ring is driven to rotate, and rolling rubbing is formed between the inner-layer bearing ring and a ball; the rubbing heat generated by the rolling rubbing is less, and cooling water in the second limiting ring has a relatively cooling effect on the hollow annular pipe so that parts, which are in contact with the hollow annular pipe to generate heat by rubbing, are certainly cooled; the heat dissipation load of the electric fan driving motor is effectively alleviated so that the service life of the electric fan driving motor is prolonged.

The invention relates to a compressor air suction structure, a compressor and refrigeration equipment. The compressor air suction structure comprises an air suction pipe, an inner cylinder, a sealingring and a heat insulation filling part, wherein the outer side wall of the first end of the inner cylinder is connected with the inner side wall of the air suction pipe in a buckled mode; the sealingring is arranged between the outer side wall of the second end of the inner cylinder and the inner side wall of the air suction pipe; and the heat insulation filling part is arranged in a space formed by the sealing ring, the air suction pipe and the inner cylinder. According to the compressor air suction structure provided by the invention, an original air suction pipe with an independent pipe type structure is changed into a composite structure with the inner cylinder and a heat insulation layer, and heat on a compressor shell is isolated on an outer pipe of the air suction pipe through thecomposite structure with the heat insulation layer at a certain length, so that the temperature of the inner cylinder of the air suction pipe is low, gas entering the compressor through the inner cylinder is prevented from being heated, the refrigeration burden of the compressor is effectively relieved, and the refrigeration efficiency of the compressor is improved.

The invention discloses a large-scale server cabinet and a thermal control system comprising the large-scale server cabinet. The large-scale server cabinet comprises a cabinet; the cabinet comprises acabinet body, a leakage-free integrated circulating pipe network, a sealing partition plate and a server; the server is a server adopting a heat pipe for heat dissipation; heat of the server is conducted out through at least one heat pipe; the cabinet body of the cabinet is divided into two independent spaces by the sealing partition plate; the two independent spaces are used for containing the server and the leakage-free integrated circulating pipe network respectively. A cooling fan is omitted, the cabinet is silent during heat dissipation; the heat dissipation efficiency is high; long-distance heat dissipation can be achieved; the indoor heat dissipation burden of a machine room is relieved; and therefore, the purposes of energy conservation and emission reduction are achieved.

The invention provides a power supply adjusting circuit, an adjustable power supply system and a method thereof. The adjustable power supply system comprises a power supply module, a device power supply and a control circuit. The device power supply executes power supply operation according to the working voltage and provides a power supply for a device under test (DUT). The control circuit outputs an adjusting signal to the power supply module according to the power utilization condition of the device to be tested. The power supply module generates a working voltage according to the adjusting signal, and enables a first power consumption generated by a power supply of the device to be smaller than a preset power. Therefore, the device power supply can provide high voltage and high current output for the to-be-tested device.

The invention discloses an LED lamp tube comprising an upper cover, an LED base plate, a heat radiator, a power supply and a lamp cap; the LED base plate is installed between the upper cover and the heat radiator; the lamp cap is installed at two ends of the LED lamp tube; the LED base plate clings to the heat radiator and the LED base and the heat radiator are installed together; the cross section of the upper cover is a segment of more than 180 DEG; the cross section of the heat radiator is a segment of less than 180 DEG; and the cross sections of the upper cover and the heat radiator form an entire circle. In the LED lamp tube provided by the invention, the LED base plate is tightly connected with the heat radiator, and no air blockage exists between the LED base plate and the heat radiator, therefore, the heat radiation efficiency is greatly increased; the power supply is arranged at two ends of the LED lamp tube, thus, the heat of the power supply is prevented from entering the LED lamp tube, and the heat radiation load of the heat radiator is lowered, and the running reliability of the LED lamp tube is improved; and the transmitting angle of the upper cover exceeds 180 DEG, therefore, a better lighting effect is obtained.