166results about How to "Reduce cooling power" patented technology

The present invention relates to an air-conditioning system, in particular an air-conditioning system for the air-conditioning of a passenger cabin of an airplane, having at least one heat exchanger arranged in a stagnation air passage for the cooling of compressed air and having at least one first shaft device and one second shaft device, with the heat exchanger including at least one first heat exchanger unit and one second heat exchanger unit separate from it on the compressed air side, which are arranged in the common stagnation air passage and of which a respective one is in communication on the compressed air side with a respective one of the shaft devices, with the shaft devices having compressors which are in respective communication on the outlet side with the inlet of the heat exchanger units on the compressed air side. The compressors are acted on by stagnation air or environmental air on the inlet side and are driven by means of one or more motors. The invention further relates to a method for the preparation of air for the air-conditioning of a space.

The invention discloses a power battery thermal management method and system applied to a charging process or discharging process of a battery pack. The method comprises the following steps: in the discharging process of the battery pack, detecting the current temperature of each single battery in the battery pack in real time, and calculating the current temperature rise rate of each single battery in real time; if the highest current temperature of each single battery exceeds a first preset temperature threshold value and the highest current temperature rise rate of each single battery exceeds a preset temperature rise threshold value, entering a radiation mode and starting radiation; in the radiation mode, if the highest current temperature of each single battery is lower than a second preset temperature threshold value, stopping radiation; if the highest current temperature of each single battery is higher than a third temperature threshold value, restarting radiation. According to the method and the system, a radiation module can also be controlled to be started or stopped to keep the battery pack within a relatively stable temperature range according to the temperature rise rate of each single battery in a discharging mode of the battery pack, so that the safety of the battery pack is improved.

A variable-speed volume-control direct-drive all-electric hydraulic excavator drive and energy recover system the control drive circuit of which includes the A, B, C energy source, boom cylinder control valve group, arm cylinder control valve group, bucket control valve, swing control valve, swing motor control valve group, left travel control valve, right travel control valve, eight 2-position 2-way valve, I and II 2-position 3-way valve, I and II accumulator. The drive control circuit adopts open control independent-cavity variable-speed pump-control volume direct-drive circuit. Each of the cavities of cylinder is controlled by an energy source and the pressure and flow rate of the cavities are adjusted by the rotational speed and torque control of the generator independently. The present invention is four-quadrant running and have advantages of high efficiency, high integrity, low consumption, redundancy energy source, no need for pilot supply, low noise, integrate recovery of kinetic and potential energy.

A gas turbo group has a combustion chamber comprising a catalytic burner stage (2), a preburner stage (1) located upstream from the catalytic burner stage, as well as a non-catalytic burner stage (11, 5, 6) located downstream from the catalytic burner stage. The preburner stage serves to always maintain a temperature (T1) at the inlet into the catalytic stage that corresponds at least to a minimum temperature (TMIN) necessary for operating the catalytic burner stage. According to the invention, the gas turbo group is operated so that the burner stage located downstream from the catalytic combustion chamber is taken into operation only when the temperature (T2) at the outlet from the catalytic stage has reached an upper limit in the presence of a maximum combustion air mass flow.

The invention provides a small air conditioner which is provided with a cold air outlet positioned above a small space, such as a cooking utensil, a range hood, a kitchen or a washroom, an elevator room and a space in the front end of a header board, and uses an air conditioning system or a semiconductor refrigerating sheet to play a role in cooling human body. The air conditioner is characterized in that: an air conditioner compressor is positioned below the cooking utensil or above the range hood; the air inlet of an air conditioner evaporator is positioned above a cooking utensil panel or the range hood, while the cooling air hole is positioned on a front panel of the cooking utensil or the range hood; and cold air produced by the evaporator is discharged outside from the air outlet to cool the human body cooking in front of the cooking utensil or the range hood, so the severe high temperature environment in front of the cooking utensil in summer is improved in a large scale. The invention has the advantages that: an independent small air conditioning system or a semiconductor refrigerating device is used for partially cooling the environment around the human body within a small range; and the air conditioner has greatly lowered refrigerating power, a greatly lowered ambient temperature, comfort and health, and energy conservation and environment friendliness in comparison to the traditional widely used air conditioning device which performs full cooling in an entire space range.

The invention discloses a comprehensive utilization system of energy. The system comprises an air conditioning demand space, a heat exchange water tank, a hot water storage device, an air conditioning device and a control unit, wherein the heat exchange water tank is provided with a cold water inlet and a hot water outlet which are communicated with a cold water source and the hot water storage device respectively; the air conditioning device comprises a first heat exchanger and a second heat exchanger; the first heat exchanger is arranged in the air conditioning demand space; the second heat exchanger is arranged in the heat exchange water tank; the air conditioning device is used for refrigeration for the air conditioning demand space through the first heat exchanger; heat is released to the heat exchange water tank through the second heat exchanger; and valves of the hot water outlet and the cold water inlet are controlled by the control unit, so that water is fed from the cold water source after water in the heat exchange water tank flows into the hot water storage device. The heat dissipated by the second heat exchanger can be effectively brought away by replacing the cold water in the heat exchange water tank, so that the power of refrigeration of the air conditioning device is reduced, and the energy is saved. The hot water which flows into the hot water storage device can be reutilized to further save the energy of heating domestic water.

The invention discloses an active and passive compound control system for a hybrid power hydraulic excavator. According to the active and passive compound control system for the hybrid power hydraulic excavator, a control circuit comprises a hydraulic pump A, a hydraulic pump B, a hydraulic pump C, a movable arm cylinder control valve bank, a bucket rod cylinder control valve bank, a bucket control valve, a rotation control valve, a rotating motor control valve bank, a two-position and two-way valve I, a two-position and two-way valve II, a two-position and two-way valve III, a two-position and two-way valve IV, a two-position and two-way valve V, a two-position and two-way valve VI, a two-position and two-way valve VII, a two-position and three-way valve I, a two-position and three-way valve II, an energy accumulator I and an energy accumulator II, an open type control circuit is adopted to serve as the control circuit, the two cavities of a hydraulic cylinder are each controlled through a power source, and the pressure and the flow of each cavity are regulated independently. The active and passive compound control system for the hybrid power hydraulic excavator has the multiple technical advantages that the energy efficiency is high, the degree of integration is high, power consumption is low, power supply redundancy is avoided, a pilot oil source is not needed, the noise is low, and kinetic energy recovery and potential energy recovery are integrated.

The invention relates to a hybrid power engineering machine multi-actuator control system which comprises a double-pump double-loop hydraulic control system. A backpressure adjusting unit, a first conversion control valve, a second conversion control valve, a third conversion control valve, a fourth conversion control valve, a fifth conversion control valve, a sixth conversion control valve and a hydraulic control one-way valve set. According to the hybrid power engineering machine multi-actuator control system, a hybrid power system is additionally arranged, recycling of movable arm potential energy and rotation braking kinetic energy is achieved, integrated control over energy recycling and load difference throttling loss eliminating is achieved, shortcomings in the prior art are effectively eliminated, and the beneficial effects of high energy efficiency, low emission and the like are achieved.

The invention discloses a control device of an induction motor, comprising a tri-phase bridge rectifier, a power module, the induction motor, a current transformer, a coder, a pulse-width modulation (PWM) driver and a driving operating system, wherein the driving operation system adopts a vector control mode and comprises a filter circuit which is connected between a speed loop proportional plus integral (PI) controller and an exciting current instruction operation unit of the driving operation system and is used for filtering the moment current instruction value and inputting the filtered moment current instruction value in the exciting current instruction operation unit; and the exciting current instruction operation unit corrects the exciting current instruction value Ids of the induction motor based on the filtered moment current instruction value to lead the induction motor to have the minimum total current under the same load condition. The invention also discloses an application of the control device of the induction motor. In the invention, on the premise of not weakening the heavy load driving capacity of an escalator and a moving walk, the effect of stable operation of the motor with minimum current under a medium / light load condition is realized, thus achieving energy conservation.

A shutter device can switch between a state where illuminating light from a lamp of an illuminating device is blocked (referred to as a closing state of the shutter device) and a state where illuminating light passes through (referred to as an opening state of the shutter device). A system control circuit instructs a panel cooling fan-use power source to decrease a fan rotation speed, when receiving information indicating that the shutter device is in the closing state from the detecting portion. After receiving this instruction, the panel fan power source decreases power supplied to the panel cooling fan (fan motor).

The invention provides a water triple-point automatic freezing and storage device, which comprises a refrigeration constant temperature tank and a compressor refrigeration machine unit, wherein liquid media is contained in the refrigeration constant temperature tank, the refrigeration constant-temperature tank comprises a mixing region and a work region, the compressor refrigeration machine unit refrigerates the liquid media, and a water triple-point bottle is arranged in the work region of the refrigeration constant-temperature tank. The invention also provides a water triple-point automatic freezing and storage method. The method and the device provided by the invention realize the complete automatic freezing and storage of the water triple-point bottle. The defects that during the conventional manual freezing, the bottle can be easily damaged, and labor and time are wasted are overcome. The work efficiency is greatly improved. A compressor refrigeration technology is adopted, and the slow temperature reduction freezing is realized, so the ice lattice distribution in the triple-point bottle is uniform, supercooling is avoided, and use is realized after the freezing. Instant use after the freezing can be realized, and time and labor are saved.

The invention relates to a dehumidifier comprises a dehumidifying wheel. An absorbent is arranged on the dehumidifying wheel; the dehumidifying wheel is divided into a dehumidifying area and a regeneration area; the dehumidifying wheel is connected with a driving device driving the same to rotate; one side of the dehumidifying area is provided with a fresh air duct; one side of the regeneration area is provided with a regenerating air duct; the dehumidifier further comprises at least two heat pumps; each heat pump is formed by a steamer, a compressor, a condenser and an expansion valve altogether forming a refrigerating circulating system; condensers of a plurality of heat pumps are arranged on a regeneration air inlet of the regeneration area; and the condensers of the plurality of heat pumps are orderly arranged front and back in the regeneration air duct. The numbers of heat pumps can be determined as needed; one or a plurality of heat pumps of the dehumidifier can be opened or closed as needed, so the dehumidifier can meet needs of various conditions; and flexible use can be achieved.

The invention relates to a hydraulic press for plastic and metal processing, wherein the invention is to provide a hydraulic press which can reduce the period and adjust the crossover of no-load stroke quickly and variably. The hydraulic press can include a press frame (1) with a press table (20) arranged thereto and a traveling press platen (2) arranged therein, in which at least one rapid motion cylinder (12) with a platen connection (13) can be arranged for the rapid no-load stroke of the press platen (2), in which a working cylinder (7) with a piston (6) directed toward the press table (20) can be rigidly arranged on the upper crosshead (11) of the press frame (1), in which a coupling device (5) and opposed thereto a crosshead (10) with a positioning and synchronizing cylinder (9) forthe piston (6) can be arranged on the piston (6) toward the press table (20), in which the piston (6) can include a centrically arranged cylindrical extension (18) for the sliding guide of a connecting device, such as a toothed rack (3), in which this connecting device can be connected to the press platen (2).

The invention discloses a manufacturing method of piezoelectric crystals. The manufacturing method includes that a kyropoulos method is used to grow piezoelectric crystals, and crystal bars of 2-6 inches and in any axial direction can be taken out from crystal ingots; the kyropoulos method includes that when the crystal growing process enters an equal diameter stage, a mode of stopping upward lifting or slight lifting is adopted to enable crystals to grow naturally, lifting speed is smaller than 0.1mm / h, the crystals do not rotate, and the top end of each crystal is not higher than an opening of a crucible during crystal growing. The crystal bars of 2-6 inches and in any axial direction can be taken out of the crystal ingots to meet requirements on various crystal axial directions during designing of a surface acoustic wave (SAW) filter, and especially the problem that some conventional Czochralski methods (CZ) cannot grow crystals in axial directions is solved.

A gas turbine has a compressor providing compressed air, a combustion chamber provided with a burner, and an expansion turbine, wherein a bypass flow channel is also provided designed to supply compressed air past the burner and to supply a hot gas flow generated in the combustion chamber during operation of the gas turbine. The opening cross section of the bypass flow channel can be adjusted, and an adjustment unit is designed to adjust the opening cross section of the bypass flow channel such that the modification speed of the opening cross section is selected such that the relative combustion chamber pressure drop or a material temperature of the combustion chamber is substantially constant, in particular that the relative combustion chamber pressure drop or the material temperature of the combustion chamber does not vary by more than 10%.

The invention discloses a hydraulic cylinder loading detecting device which comprises a first oil pump, a second oil pump, a pressurizing cylinder, a reversing valve, a first connector used for being connected with a first hydraulic cylinder and a second connector used for being connected with a second hydraulic cylinder. A first cavity of the pressurizing cylinder is connected with the first oil pump which provides oil for the pressurizing cylinder through the reversing valve and is connected with the second connector which provides oil for the pressurizing cylinder at the same time. A second cavity of the pressurizing cylinder is connected with the first connector and is used for providing oil for the first connector. The second connector is connected with the second oil pump which provides oil for the second connector. The pressurizing cylinder can output driving pressure oil with pressure higher than oil source pressure, the problem that an oil source is at a high-pressure working state can be avoided, and oil source service life is prolonged. In addition, energy recycling and reusing can be achieved, system installing power is lowered, system heating is low, and cooling power can be saved.

The invention provides a data center computer room temperature control system and method, and belongs to the technical field of temperature control. The data center computer room temperature control method is based on precise air supplying principles, cold air sent out by an air conditioner is conveyed to each IT equipment cabinet through controllable air channels, so that the cold power and the wind power sent out by the air conditioner are utilized to the largest extent, and exchanged with the heating power generated by IT equipment, happening of the phenomenon that high temperature or partial superheating of the IT equipment is effectively avoided, the purpose that the equipment is cooled firstly and then the environment is cooled is achieved so as to reduce the refrigerating power of ineffective parts of the air conditioner, and the effects that the energy consumption is reduced and the energy is saved are achieved. The data center computer room temperature control system conducts real-time calculation on the heating power generated by each equipment cabinet based on the precise air supplying principles, the wind volumes of wind inlets and wind outlets of the equipment cabinets are adjusted intelligently so that each IT equipment can obtain sufficient heat exchange, an original partial superheating phenomenon is avoided, and the energy consumption of air conditioning equipment is reduced.

The invention provides a linear-motor-driven conveying system, in particular stretching system. The improved linear-motor-operated conveying system is distinguished, inter alia, by the following features: the conveyed web (F) can be fixed to the nipper part (6), as a result of which a conveyed web plane (FE) is defined, said film plane (FE) being arranged at a height (H) with respect to the motor working side (MA) of the single linear motor drive or of the more powerful linear motor drive in the case of two linear motor drives, and said height (H) being less than or equal to the length (L) of the secondary parts (503) on the conveying parts (7); the conveying system comprises either a) only one linear motor drive provided beneath the conveying part (7), or b) only one linear motor drive provided above the conveying part (7), or c) one linear motor drive arranged beneath and one arranged above the conveying part (7), the upper linear motor drive and / or the associated control system being configured in such a manner that the upper linear motor drive can only be operated with a maximum power of 75% in relation to the maximum power of the lower linear motor drive.

The invention relates to a single-engine multiple-transmission operation mode of a road pollutant removal vehicle. The single-engine multiple-transmission operation mode comprises an engine, a clutch,a gearbox, a multiple-transmission box, a chassis hydraulic walking operation mechanism and a top-mounted pure mechanical transmission operation mechanism. According to the layout mode, the size of ahydraulic oil tank can be reduced to 1 / 3-1 / 4 of the original hydraulic transmission, the heat dissipation power of a hydraulic system is greatly reduced, meanwhile multiple motors, multiple high-pressure oil pumps, multiple control valves and other components are omitted, and the space is saved; meanwhile, compared with the top-mounted hydraulic transmission, by the adoption of the top-mounted pure mechanical transmission operation, the layout is simple, the failure rate is low, the maintenance is easy, a high-power hydraulic oil heat dissipation system is omitted, and the whole vehicle costis reduced; meanwhile the hydraulic walking operation is realized, and the requirements of large-torque and ultra-low-speed operation are met; and the output power of an engine is matched through themultiple-transmission box, the ultra-low-speed hydraulic walking during operation can be met, and the mechanical force-taking requirement of a high-pressure water pump and a high-pressure fan can be met.

The invention discloses a central air-conditioning environmental-protection energy-saving cyclic utilization system. A surface cooler and a plate exchanger are respectively installed on an air-conditioning fresh air port, a main air return pipe and a box body air return port. And therefore, mould pressure is reduced, temperature in a coating plant is reduced, working performance of equipment is stabilized, product quality and production efficiency are improved, simultaneously energy is saved, hot water produced by recycling waste heat of an air-conditioning set is supplied to staff dormitories and canteens for use, and a lot of energy is saved.

The invention relates to dynamoelectric machine, in particular a wind generator, comprising a stator (1), which is designed as a laminated core and has a winding system, which forms winding heads (16) on the end faces of the stator (1), and a rotor (3), which is designed as a laminated core and which is connected to a shaft (7) in a rotationally fixed manner, wherein the stator (1) and the rotor (3) are arranged in a housing, wherein the shaft (7) is supported by means of bearings (9), which are arranged in bearing shields (8), wherein the laminated core of the stator (1) and / or rotor (3) has axially extending cooling channels (15), wherein the bearing shields (8) form a closed interior together with the housing, said interior having at least one closed inner cooling circuit, wherein the housing has an outer jacket (12) and an inner jacket (19) facing the stator (1); and arranged at a distance from the outer jacket in some sections, wherein the outer jacket (12) and the inner jacket (19) combined form a cooling jacket (11), in particular a liquid cooling jacket, the axial extension of which equals at least the axial extension of the laminated core of the stator (1).

The invention discloses a charging generator. The charging generator comprises a front warehouse and a rear warehouse. The front chamber is used to install a device that requires IP protection in thecharging circuit of the charger. The rear chamber does not require an IP protection level and is used to install a device that does not require IP protection in the charging circuit of the charger. Inthis way, structural optimization of a plurality of devices involved in the charging circuit of the charger can be realized, thereby reducing the overall volume of the charger, thereby achieving thepurpose of reducing the overall weight of the charger. Specifically, a heat sink is installed on the partition plate between the front and rear chambers, and the mounting surface of the heat sink is placed in the front chamber, and the heat radiating fins of the heat sink are placed in the rear chamber, and install the fan and the air inlet and outlet in the back warehouse. In this way, efficientheat dissipation by the combination of the heat dissipating fins and the fan can greatly improve the heat dissipation efficiency and reduce the volume of the heat sink itself. In turn, the purpose ofreducing the overall volume of the charger is achieved, which is beneficial to the weight reduction of the train equipment and the reduction of the energy consumption of the train operation.

The invention relates to an engineering operation machine and belongs to the field of machines. The engineering operation machine comprises a hydraulic cooling system, a liquid-gas energy storage balance system, a hydraulic cylinder driving system and a working device driving system. The hydraulic cooling system comprises a hydraulic system, a cooler, a cooling control device, an oil tank and a heat recovery device. The heat recovery device comprises a heat exchanger, a working medium pump, a working medium filter, a working medium storage device, a condenser, a condenser control device, an electric generator, an expander, a heat recovery controller and an electricity storage device. The hydraulic system sucks hydraulic oil from the oil tank through an oil suction opening, the hydraulic oil enters the heat recovery device through an oil return opening after work is completed, the hydraulic oil subjected to heat exchange through the heat recovery device enters the cooler to be cooled, the hydraulic oil returns to the oil tank finally, and circulating is completed. According to the engineering operation machine, the potential energy of a working device can be recovered effectively, stored energy is released in the ascending process of the working device, and thus energy is saved. The cooling power of the cooling system can be reduced, and the non-load operation energy consumption of the cooling system is reduced when the system temperature is low.

A battery module or battery pack is provided having a serpentine counter flow cold plate with improved dissipation of heat from individual battery cells, wherein the cold plate provides a more uniform temperature gradient across the cold plate to more evenly transfer heat from the battery cells to liquid coolant circulating through the cold plate. The cold plate selectively omits turbulator material upstream of turbulators to control and govern the coolant fed into and through the turbulators to provide a more uniform temperature gradient across the cooling surfaces.

The invention relates to the field of chemical engineering and technology. Aiming at solving the problems of high energy consumption and low efficiency of an existing stripping technology of the two-dimension nano materials, the invention provides a method for efficient supergravity stripping of two-dimension nano materials. The method comprises the following steps: firstly, feeding a two-dimensional stratified material into dispersion liquid for fully wetting and uniformly mixing to obtain material dispersion liquid, and then inputting the material dispersion liquid to a circular storage tank; secondly, outputting the material dispersion liquid from an outlet in the lower end of the circular storage tank, enabling the material dispersion liquid to enter a central entrance of a secondary rotary flow reactor rotating at high speed through a pipeline; enabling feed liquid flowing out of the reactor outlet to enter an entrance of a shell and tube heat exchanger through the pipeline; and refluxing the feed liquid flowing out of the shell and tube heat exchanger into the circular storage tank, and cycling for multiple times according to the steps, thus obtaining a few-layer two-dimension nano material with less than 3 layers. The method disclosed by the invention can realize quick, efficient, low-cost, large-scale and high-quality production of various two-dimension layered nano materials.

A cooling assembly includes a device chamber, a cooling chamber separated from the device chamber, a heat exchanger, a device chamber fan arrangement and a control unit. The heat exchanger includes a first portion located in the device chamber and a second portion located in the cooling chamber for transferring heat from the device chamber to the cooling chamber. The device chamber fan arrangement is configured to generate a device chamber cooling medium flow including a first partial flow interacting with the first portion of the heat exchanger. The cooling assembly also includes a first throttle arrangement for regulating the first partial flow. The control unit is configured to reduce a cooling power of the heat exchanger as a response to predetermined operating conditions by decreasing the first partial flow with the first throttle arrangement.