5509results about How to "Guaranteed cooling effect" patented technology

The invention provides a central air-conditioner chilled water control method based on dynamic responses to tail-end total load changes. A system tail-end total load Q is obtained through the real-time statistics of a load of each piece of tail-end equipment; meanwhile, a chilled water supply temperature Tg, a chilled water return temperature Th and a water collector/separator pressure difference DeltaP are collected; the intelligent control that the cooling capacity of a chilling station is matched with the tail-end loads is realized by the system according to Q, Tg, Th and DeltaP in a control way of combining feedback control and feedforward control. According to the method, the feedforward control guarantees the rapidness of the system, and the feedback control guarantees the accuracy of the system; when the two are combined, the demand of the chilling station on timely and accurate response to the tail-end loads is realized; and therefore, the refrigeration performance of the tail-end equipment is guaranteed.

Methods and devices producing time varying magnetic field treats a patient. The device contains a coil made of insulated wires, an energy storage device, an energy source and a switch. The coil is flexibly attached in a case. The device has at least one blower for cooling the coil. The methods and devices can be used in for example in physiotherapy, neuropsychiatric therapy, aesthetic therapy, urology or urogynecology.

The invention discloses a radiation control method for an air conditioner outdoor unit. An air conditioner comprises an outdoor heat exchanger, an electronic expansion valve, an electronic control radiator and a throttling mechanism. The electronic control radiator is disposed between the outdoor heat exchanger and the throttling mechanism. The electronic expansion valve is disposed between the outdoor heat exchanger and the electronic control radiator. The radiation control method includes: detecting one or more of the temperatures of outdoor unit electronic control, outdoor environment and the outdoor heat exchanger; acquiring the target openness of the electronic expansion valve according to the detected temperature(s), and adjusting the electronic expansion valve according to the target openness. The radiation control method has the advantages that radiation control of an air conditioner outdoor unit is achieved by intelligently adjusting the temperature of the coolant flowing by the electronic control radiator.

A liquid-cooled electric motor with a motor shaft, with two bearing plates which are mounted on the end faces of the motor housing and which carry on each side at least one bearing, the motor shaft being mounted rotatably in the bearings, and with at least one rotating hydraulic pump, the drive shaft of which is connected to the motor shaft by way of a coupling and which is driven by the electric motor. The casing of the motor housing receives a cooling liquid, has an at least partially hollow design and forms a casing cavity. At least one connecting duct for the supply of cooling liquid from the casing cavity to the bearings for cooling and lubrication of the bearings is provided in each of the bearing plates and in that said flanged-on hydraulic pump is sealed off in a liquid-tight manner with respect to the bearing plate interiors.

The invention discloses a production method of a fine-denier porous POY black yarn. The method comprises the following steps of: drying semi-dull slices, drying black masterbatch, adding the slices and the black masterbatch material into a screw extruder, fusing the added materials in the screw extruder, respectively processing the fused materials in a metering pump and a spinning beam, spinning on a pack, cooling the materials by lateral blowing, applying oil on strands, processing the strands in draw-off godets GR1 and GR2, winding and shaping, and inspecting products. The method is characterized in that the step of drying the black masterbatch comprises the following sub-steps of: based on a continuous drying mode, firstly, adding the black masterbatch into a crystallization and drying tank, introducing heated dry air from the lower part of the crystallization and drying tank, and blowing out the heated dry air from the top of the crystallization and drying tank so as to dry the black masterbatch, wherein the drying time is 2 hours, the dried black masterbatch falls into an intermediate material storage bin for storage under the crystallization and drying tank, and the black masterbatch is further injected by a masterbatch injector under the intermediate material storage bin. The production method of the fine-denier porous POY black yarn has high masterbatch spinnability and better cooling effect, and can improve the oil application uniformity of spinning cakes and the productivity.

The invention discloses a water-based non-graphite type lubricant, which is characterized by comprising the following ingredients in percentage by weight: 26%-35% of inorganic substance with layered lattice structures, 10%-15% of high-temperature-resistant lubricant, 12%-24% of suspending agent, 30%-47% of high-temperature adhesive and 1%-3% of adjuvant. The water-based non-graphite type lubricant is an environment-friendly lubricant for hot die forging, can replace a graphite type lubricant, and is especially suitable for the hot die forging of metal, in particular, for the hot die forging of large-sized aluminum pieces. The invention further discloses a preparation method of the water-based non-graphite type lubricant. The preparation method has the advantages of simple preparation process and excellent film-forming performance.

Methods and systems for treating a patient using a time varying magnetic field are described. The treatment methods combine various approaches for aesthetic treatment. The methods are focused on enhancing a visual appearance of the patient. An exemplary method includes charging an energy storage device and discharging the energy storage device to a magnetic field generating device to generate the time-varying magnetic field. The time-varying magnetic field is applied to the patient.

The invention belongs to the technical field of air conditioners, in particular to a freezing prevention control method of an indoor unit of an air conditioner. The problem that a freezing condition of the indoor unit of an existing air conditioner is judged only through a temperature of an inner coiled tube so as to easily cause misjudgment is solved. The freezing prevention control method of theindoor unit of the air conditioner disclosed by the invention comprises the following steps: acquiring current of an air blower and a temperature of a coiled tube of the indoor unit when the air conditioner is at refrigerating operation; judging whether the air conditioner enters into a freezing prevention mode of the indoor unit according to the current of the air blower of the indoor unit and adifference value between the temperature of the coiled tube of the indoor unit and a standard temperature of the coiled tube when the temperature of the coiled tube of the indoor unit is smaller thanthe freezing temperature of the coiled tube of the indoor unit; judging the entrance time of the indoor unit into the freezing prevention mode according to the current of the air blower of the indoorunit and the difference value between the temperature of the coiled tube of the indoor unit and the standard temperature of the coiled tube, so that the judgement ability of the air conditioner can be greatly improved.

The invention relates to an air-cooled heat dissipation structure of a high-power converter device. In the high-power converter device, the inner space of a cavity can be partitioned into a first cavity and a second cavity by a vertical clapboard; the top parts of the first cavity and the second cavity are respectively provided with an air outlet, and the bottoms thereof are respectively provided with an air inlet, so as to form a first heat-dissipation air duct and a second heat-dissipation air duct; a power-electronic power device and a power-electronic control pat are arranged in the first heat-dissipation air duct; an auxiliary transformer, a line-side inductance, a converter-side inductance, an AC filter capacitor, a DC-side resistor and a damping resistor are sequentially distributed along the air flow direction of the second air duct; and the fist duct and the second duct are respectively provided with a fan. In the invention, various passive elements and the power-electronic power device are coordinated and unified for heat dissipation, thereby decreasing the number of the fans and reducing the volume of a heat dissipation device.

A dental drill (10) defining a bore diameter and a drill stop sleeve (22) which is transparent or translucent, thereby improving the view of the drilled hole formed by the drilling during the operation. The drill stop sleeve (22) comprises an uninterrupted circumferential lip (34), which interacts with a groove (24) formed in the shank part (16) of the dental drill (10) and thus fixes the drill stop sleeve (22) on the dental drill (10). The drill stop sleeves (22) of equal length are held in a blister of a set, the blister having, for each drill stop sleeve (22), a specific receiving recess that is closed in a sterile manner. Each blister comprises several drill stop sleeves with sleeve diameters corresponding to the bore diameters.

An embodiment of the invention provides a dust-proof net plugging degree detection device, a method and an electronic equipment, adaptable to different environments to detect the plugging degree of the dust-proof net. The device comprises a wind speed detection unit, a data conversion module and a plugging detection unit; the method comprises the following steps: collecting the rotating speed of a fan, and the wind speed parameters at the rotating speed; obtaining the wind resistance characteristic parameters, according to the rotating speed of the fan and the wind speed parameters at the rotating speed; and determining the plugging degree of the dust-proof net based on the wind resistance characteristic parameters and the alarm threshold value. The device in the embodiment of the invention can adapt to various environments and different dust-proof nets, which can give an alarm directly based on the dust-proof net plugging degree determined by the wind speed so as to notify the user to timely clean or replace the dust-proof net.

The invention discloses a filth blockage control method of an air conditioner indoor unit. According to the filth blockage control method, firstly real-time power of a motor is obtained; then the influence of air conditioner input voltage, humidity and compressor frequency on motor power is considered, the real-time power of the motor is modified, and therefore a new filth blockage value is obtained; the new filth blockage value is compared with a preset filth blockage standard value corresponding to the rotating speed equal to that of the motor, and whether an air conditioner meets the filth blockage condition or not is judged; when the air conditioner meets the filth blockage condition, a warning message is sent to a user so as to warn the user to remove dust. Factors such as network voltage, environment humidity and compressor frequency which affect filth blockage judgment are considered so that the filth blockage situation of an outdoor heat exchanger and the demands for removing dust timely can be accurately detected; the influence of the factors such as user network voltage, air humidity and compressor frequency is avoided; the refrigeration and heating effects of the air conditioner are guaranteed, and the health degree and comfort of the user are further improved.