201results about How to "Solve the icing" patented technology

The invention provides an engine cylinder cover shield which comprises a shield body and a cover plate. The cover plate is arranged in the shield body, the cover plate and the shield body are separated, an oil gas pre-separation space is formed between the cover plate and the shield body, a first gas inlet communicated with a crankcase is arranged in the oil gas pre-separation space, and stacked oil baffles are arranged in the oil gas pre-separation space. Each oil baffle comprises a first extending portion extending upwards and backwards from the starting end, a second extending portion extending upwards and towards the starting end from the tail end of the first extending portion and a third extending portion extending downwards and backwards from the tail end of the first extending portion. A crankcase ventilation system adopting the engine cylinder cover shield is further provided. The shield and the system have the advantages of being good in oil gas pre-separation effect and avoiding adverse effect of low temperature on gas flowing.

The invention discloses a control method of an air conditioner. The control method comprises the following steps: S1, starting the air conditioner and enabling the air conditioner to be in refrigeration operation; S2, detecting the outdoor environmental temperature T1; S3, when T1 is within a set value range, enabling the air conditioner to be in a low-temperature refrigeration mode; S4, regulating the operating frequency of a compressor according to a sub-region to which the T1 belongs, and exiting from the low-temperature refrigeration mode when detecting an exit condition. According to the control method of the air conditioner disclosed by the embodiment of the invention, the technical problems of indoor unit freezing, compressor liquid return and the like under a low-temperature environment are solved.

Provided is a refrigerator (10). The refrigerator (10) includes a main body (11) having a storage space, a door (14) opening or closing the storage space, a dispenser (20) provided in the door (14) to dispense cooled water and purified water, a purified water input part (251) provided in the dispenser (20) to input a command for dispensing the purified water, a cooled water input part (252) provided in the dispenser (20) to input a command for dispensing the cooled water, a dispensing amount input part (255) for setting an amount of purified water to be dispensed when the purified water is selected through the purified water input part (251), a filter device (40) provided within the storage space to purify water supplied from a water supply source (1) outside the main body (11), a water tank (50) storing the water passing through the filter device (40), the water tank (50) configured to cool the stored water by using cool air within the storage space, a purified water passage (62) guiding the purified water filtered in the filter device (40) into the dispenser (20), a cooled water passage (63) guiding the cooled water cooled in the water tank (50) into the dispenser (20), a purified water valve (622) controlling a water flow in the purified water passage (62), and a cooled water valve (632) disposed in the cooled water passage (63) to control a water flow in the cooled water passage (63). When the purified water is selected through the purified water input part (251), the purified water valve (622) is opened, and the cooled water valve (632) is closed, when an amount of water set through the dispensing amount input part (255) has been dispensed, the purified water valve (622) is closed, and when the cooled water is selected through the cooled water input part (252), the cooled water valve (632) is opened, and the purified water valve (622) is closed.

The invention discloses an unmanned aerial vehicle system applied to weather modification. The unmanned aerial vehicle system comprises two engines, wherein a front-pull type engine (1) is connected with the head of an unmanned aerial vehicle and is used for providing forward pull; a rear-push type engine (2) is connected with the tail and is used for providing the push; and a pull line of the front-pull type engine (1) is overlapped with a push line of the rear-push type engine (2). During work, the two engines work simultaneously for providing the power for the unmanned aerial vehicle to fly, and when one engine is failed and shuts down, the other engine continuously works. The unmanned aerial vehicle at least can load eight silver iodide flames at high altitude of over 5,000 meters for artificial precipitation work, adopts the technology of catapult-assisted take-off and parachute recovery, and does not need special runways. A front edge deicing device is arranged on the front edges of the wings, and the problem that the wings are frozen is solved. The unmanned aerial vehicle system has the characteristics of simple and convenient operation, rapid maintenance, wide application range of using field.

The invention relates to an outdoor pan-tilt camera anti-icing structure. The outdoor pan-tilt camera anti-icing structure comprises a pan-tilt shell, a protection cover shell and a main shaft. The main shaft is transversely arranged on the pan-tilt shell in a rotating mode. The protection cover shell is fixedly arranged at one end of the portion, outside the pan-tilt shell, of the main shaft. An anti-icing mechanism controlled by a control unit is arranged in the gap between the pan-tilt shell and the protection cover shell. The anti-icing mechanism comprises a rotating wheel, a brushing disc and bristles, wherein the rotating wheel is arranged between the side wall of the pan-tilt shell and the main shaft in a rotating mode, the brushing disc is coaxially and fixedly arranged on the side wall of the rotating wheel, the bristles are fixedly arranged on the outer side end face of the brushing disc, the end portions of the bristles make contact with the side wall of the protection cover shell, and the rotating wheel rotates to drive the bristles to rotate. The control unit is connected with a temperature and humidity detection unit and a weight detection unit. The outdoor pan-tilt camera anti-icing structure is simple in structure and scientific and reasonable in design, the icing problem of the gap between a pan-tilt and the side wall of a protection cover is effectively solved, it is ensured that the pan-tilt camera can normally work all day long, and performance of the product is effectively improved.

The invention provides a low-freezing-point nitric oxide reducing agent and a preparation method thereof. The low-freezing-point nitric oxide reducing agent consists of, by mass, 20%-32.5% of urea, 5%-10% of dimethyl sulfoxide, 40%-55% of pure water and one or more of 10%-20% of acid amide, amides and low molecular alcohols. The preparation method comprises the following steps of preparing raw materials, performing full mixing at the temperature ranging from 10 DEG C to 30 DEG C till all raw materials are completely dissolved into a water solution and mixed evenly, using a filter element with the filter accuracy ranging from 0.5 mum to 5 mum and filtering the raw material water solution under the pressure of 0.2-1 MPa to obtain a finished product. The anti-freezing agent raw materials have the advantages of being safe and easy to obtain, good in anti-freezing effect, non-toxic, harmless and the like. The freezing point of the reducing agent is greatly reduced, the problems of low-temperature crystallization and icing are solved, the anti-freezing performance of the nitric oxide reducing agent can be remarkably improved, and the freezing point can be lower than subzero 25 DEG C. A test shows that after engine exhaust gas is filled into an SCR aftertreatment system of the low-freezing-point nitric oxide reducing agent to be treated, the exhaust gas emission can be up to the national IV standard.

The invention provides a steam internal-combustion engine, which replaces a spark plug of ordinary internal-combustion engine with a water injection spark plug, if an engine reaches the preset temperature limit, when the fuel combustion cycle starts, the water injection spark plug injects a small amount of water close to boiling point to a combustion chamber. A steam internal-combustion engine controller monitors the temperature of the engine, receives and changes the oil-injection pressure, starts and closes a water injection solenoid valve, and controls the water injection volume accurately. The steam internal-combustion engine provided by the invention can changes the ordinary automobile into a steam internal-combustion locomotive, can change water into hot water through effectively utilizing waste heat from combustion and discharge, and then changes the hot water into steam; the generated additional useful work pushes a piston, thereby reducing the consumption and emissions of fuel oil. The efficiency of the steam internal-combustion engine is of 40%, and is not 20% of the existing internal-combustion engine. The steam internal-combustion engine provided by the invention can be used for not only most automobiles but also any otto cycle (Otto Cycle) internal combustion engine, such as, the generator, the lawn mower and the like.

A bridge deck anti-icing device is composed of a transverse heat conduction pipe, a bridge deck main body with a groove, a bridge deck surface layer, a temperature control box, a heating source and a power line. The transverse heat conduction pipe is embedded into the groove of the bridge deck main body; the diameter of the groove is adapted to the transverse heat conduction pipe and the bridge deck surface layer covers the transverse heat conduction pipe. The transverse heat conduction pipe transversely passes through a whole lane and the other end of the transverse heat conduction pipe is connected with the heating source; the temperature control box is engaged with the heating source by the power line. When the temperature of a bridge deck is lower than 2 DEG C, the heating source is automatically opened by the temperature control box and a heat source is transmitted to the surface of the bridge deck heat conduction pipe, so that the bridge deck surface layer is heated and the bridge deck is prevented from being iced. The temperature of the bridge deck surface layer keeps more than 0 DEG C by the heat conduction pipe through the heating source; with the adoption of the device, the icing problem of the bridge deck can be solved, the driving safety is improved and the accidents are reduced.

The invention relates to an energy-saving quick defroster comprising a high-pressure gas bypass unit and a defrosting compressor unit. The high-pressure gas bypass unit and the defrosting compressor unit are parallelly connected with the high-pressure side of a refrigerating system and an evaporator. By the use of the energy-saving quick defroster, solved are such problems that during defrosting the refrigerating and heating air conditioner unit takes long time of defrosting, the evaporator side temperature changes sharply and energy consumption is high. Compared with the prior art, the energy-saving quick defroster is energy efficient, high in defrosting speed, low in temperature fluctuation and significant to solving the haze problem.

The invention relates to a heavy automobile rain test system and a process. The heavy automobile rain test system includes a rain test room and a rain area arranged in the rain test room, a bumping belt area, a blowing area, and heating areas are arranged in the rain test room, a ground heating area is arranged at the outlet of the rain test room, the rain area, the bumping belt area, and the blowing area are successively arranged in sequence from the inlet to the outlet of the rain test room, the heating areas are arranged at the inner two sides of the walls of the rain test room, the rain area includes rain equipment being composed of pipelines, a nozzle, and an undercarriage, controlled by a PLC, capable of realizing automatic rain functions, and guaranteeing the reliability of the rain test by means of a plurality of travel in-place switches, the bumping belt area is provided with bumping belt facilities arranged on the ground, the blowing area is provided with blowing equipment, the heating area is provided with heating facilities, and the ground heating area is provided with ground heating facilities for part of moisture which is not cleaned to vapor.

The invention relates to an automatic deicing device of a barrel head of a chimney and a deicing method thereof. The device comprises steel needles which are arranged on the top portion of the barrel head of the chimney, a main heating pipe which is arranged on the periphery of the inner side of the top portion of an inner barrel of the chimney and a deicing pipe which is arranged outside the top portion of the chimney. A water drainage layer is further arranged on the outer surface of the barrel head. According to the device, the steel needles are arranged on the barrel head of the chimney, small ice particles which are possible to be formed are shaken off by shaking of the steel needles under the action of the wind, automatic venting heat exchanging and deicing devices are arranged inside and outside the barrel head and matched with the water drainage layer of the outer surface of the barrel head, so that the freezing problem of the barrel head can be solved effectively.

The invention relates to an engine crankcase ventilation system and method. The system comprises an engine crankcase, one end of a PCV valve communicates with an oil-gas separator, one end of the PCVvalve communicates with the air inlet end of an intake manifold through a first one-way valve, and one end of the PCV valve communicates with one output end of a supercharger and an EGR mixing valve through a second one-way valve, an EGR cooler communicates with the input end of the EGR mixing valve, the other output end of the EGR mixing valve communicates with an air filter, the other end of thesupercharger communicates with the air inlet end of the intake manifold, and the air outlet end of the intake manifold communicates with an engine cylinder cover. According to the system, an engine oil aging speed can be effectively reduced, engine oil emulsification risk of a valve chamber cover, an oil filling cover and the wall surface of the oil-gas separator can be reduced, and the problem of a failure of icing at the tail end of a breathing tube in winter can be solved.

The invention discloses a water-side evaporation cooling system for an auxiliary mechanical refrigeration. The water-side evaporation cooling system comprises an indirect evaporation cooling water chilling unit, wherein the indirect evaporation cooling water chilling unit is connected to a plate type heat exchanger through a circulating water pipe A to form a closed pipe loop; the plate type heatexchanger is sequentially connected to an air cooling water chilling unit and an air conditioner tail end through a circulating water pipe B to form a closed pipe loop; and a circulating water pipe Cis further arranged on the circulating water pipe B, and the circulating water pipe C is connected to the indirect evaporation cooling water chilling unit. According to the water side evaporation cooling system, different running modes are adopted for different seasons, a water side evaporation cooling technology and an ethylene glycol natural cooling technology are fully utilized, the full-year operation cost of a data center is reduced, the use energy consumption is low, the whole refrigeration system can stably supply cold for a data machine room in the whole year, and good practical valueis achieved.

The invention relates to an air conditioning room outdoor machine fit for low-temperature environment, which comprises a machine body, an air inlet, an air outlet, an air compressor and a fan, wherein a heat conducting tube is arranged on the air inlet of the machine body; one side of the heat conducting tube is inserted in a heater; and the anti-freezing conducting liquid and a heating plate soaked in the anti-freezing conducting liquid are arranged in the heater. The machine quickly preheats the surrounding cold air through the heat conducting tube on the air inlet, so as to prevent the normal running from being affected by the cold air frozen at the air inlet of the outdoor machine. At the moment, the air absorbed by the fan is the air firstly heated by the heat conducting tube, therefore relieving the compressing work of the air compressor, prolonging the service life thereof, and decreasing the energy required by the air compressor for compressing and heating. The heating speed of the outdoor machine is high and the heat conducting tube has double function which not only overcomes the shortcomings of affecting work by the frozen shell of the traditional outdoor machine but also preheats the air fed into the fan, so the outdoor machine of the invention has reasonable structure and achieves the energy-saving effect.

The invention provides a light emitting diode (LED) device. The device comprises an LED module and a power driver used for providing electricity to the LED module, wherein the LED module comprises visible LED chips and infrared LED chips. The device also comprises a temperature sensor, wherein the temperature sensor is used for sensing the temperature of the surface of the LED module; and when the temperature of the surface of the LED module, which is sensed by the temperature sensor, is lower than 0, the temperature sensor sends a control signal to the power driver to control the power driver to output current to the infrared LED chips so that the infrared LED chips emit infrared light to melt ice on the surface of the LED module.

The invention belongs to the field of road construction and particularly relates to a construction method for an antifreeze road body. The construction method comprises the following steps that 1, power-on test is conducted on heating cables to be laid before the heating cables to be laid enter a field, whether the heating cables work normally is detected, and the road face base layer is leveled and cleaned; 2, a damp-proof layer is laid; 3, a heat insulation layer and a reflection layer are laid; 4, a heat dissipation layer is laid; 5, a heating cable layer is laid; 6, a temperature sensing probe is arranged; 7, a road face cushion layer is laid; and 8, a road surface layer is laid. The problem of road face freezing is solved thoroughly, the road face is heated before the road face freezes, the performance of the road body is improved while it is ensured that the road face does not freeze, and the situation that the road face freezes to affect the performance of the road body and shorten the service life of the road body is prevented. The service life of the road body can be prolonged through the design of the road body, and safety of the road face is improved.

The invention relates to an anti-freezing POC type gas cabinet, and belongs to the technical field of gas storage engineering. The anti-freezing POC type gas cabinet comprises a cabinet body and a piston which is arranged in the cabinet body and moves up and down, wherein the cabinet body comprises stand columns, side plates and T-shaped steel; an electric heating belt and a heat insulation layerare arranged on the outer wall of each side plate; heat insulation layers cover the T-shaped steel and the stand columns; and the upper part of the piston is coated with a heat insulation layer. According to the anti-freezing POC type gas cabinet, a heating heat insulation device is arranged on the outer side of the cabinet body and the heat insulation layer is arranged in the piston area, so thatsafe and stable operation of the gas cabinet in a cold area under the condition that the input heat of the gas is smaller than the heat dissipation is achieved.

The invention provides an air-conditioning system improvement method and device for applying all-weather solar heating and relates to the technical field of energy conservation and energy utilization. The air-conditioning system improvement method and device for applying all-weather solar heating are mainly applied to the air-conditioning heating industry. In an original air-conditioning system provided with a single cold host machine used in cooperation with a cooling tower and a boiler, a plate heat exchanger, a solar heat collection plate and an energy storage tank are utilized, and a circulation loop is added. The cooling tower is used for absorbing heat in winter air. The solar heat collection plate is used for absorbing solar photo-thermal energy and then transferring the solar photo-thermal energy to the plate heat exchanger. The single cold host machine is used for absorbing heat of an antifreezing solution. The plate heat exchanger is additionally arranged to form secondary circulation to prevent the antifreezing solution from freezing, and heat can be supplied to indoor users without starting the boiler when the outdoor temperature is above five DEG C; on the condition of not changing the original system and maintaining the summer working performance, the winter heat supply function is increased, the utilization rate of the single cold host machine and the cooling tower is increased, the usage time of the boiler is greatly shortened, the energy utilization rate is increased, and environmental pollution is reduced.