64results about How to "No frost" patented technology

A small and medium frostless refrigeratory for keeping fresh of farm and sideline products is provided, which comprises a refrigeration compressor unit (1), a vaporize comb (2) and a reducing valve (3). The vaporize comb (2) is communicated with the refrigeration compressor unit (1) to form circulation, which is provided with the reducing valve (3); the vaporize comb (2) is arranged in a shallow pool (5) at bottom of a refrigeratory (4); the shallow pool (5) is internally provided with secondary refrigerant. The refrigeratory (4) is also internally arranged with a circulating pump (6) and a cascade device of a shower (7). The refrigeration compressor unit (1) sends the refrigerant to the vaporize comb (2) through the reducing valve (3) and the refrigerant can return to the refrigeration compressor unit (1) after absorb heat; the circulating pump (6) sends the secondary refrigerant to the shower (7) to spray in the refrigeratory (4). The invention is characterized in that: the cold volume is completely exchanged in the refrigeratory, so the invention has no dissipation and lose, large cold volume storage and is able to maintain a relative constant temperature of the refrigeratory, thereby reducing the times for opening and closing the refrigeration compressor, saving energy, prolonging the service life of the equipment, having no forest and high humidity, etc.

The invention discloses a heat pump air-conditioning system of a fuel cell vehicle. The heat pump air-conditioning system comprises a compressor, a four-way reversing valve, a vehicle interior heat exchanger, a throttling valve, a vehicle exterior heat exchanger, a methanol water storage container, a conveying pump, a reformer, a fuel cell, a power conversion system, a vehicle motor and a residual air mixer, wherein the reformer generates high-temperature residual air and discharges the residual air to the residual air mixer or the outside; the residual air mixer is used for mixing external air with the high-temperature residual air to produce intermediate-temperature mixed air and outputting the intermediate-temperature mixed air to the outside; the fuel cell is used for generating electric energy through an electrochemical reaction between hydrogen and oxygen and outputting the electric energy; the power conversion system is used for converting the electric energy output by the fuel cell into electricity required by a load to supply power to the compressor, the conveying pump and the vehicle motor. The heat pump air-conditioning system can still efficiently and normally work under a heating working condition, when the outdoor air is lower than 5 DEG C, an evaporator cannot frost, power demands of the vehicle motor can be met, the noise and the energy consumption are low, and air and environment cannot be polluted.

The invention provides grease for plant-based candles. The grease is prepared from a grease raw material, which includes rice bran grease, through transesterification. The full-triglyceride plant-based candle is free of cracking and oil leakage and is anti-frosting, and has excellent demoulding performance.

The invention discloses an all-weather solar air-conditioning system. The all-weather solar air-conditioning system comprises a solar collector, a heat pump compressor and a user heat exchanger, wherein the solar collector consists of a body, an air blower, a coiled pipe heat exchanger, a spray system and a solar panel; an opening is formed in the upper part of the body; the air blower is mounted at the upper opening; an opening is formed in the side surface of the body; a guide plate is mounted at the opening of the side surface; the coiled pipe heat exchanger is mounted inside the body, and connected with the heat pump compressor through a pipeline; the solar panel is mounted on the outer part of the side surface of the body, and connected with the heat pump compressor through a pipeline; the spray system consists of a spray water pump mounted in a water collecting slot in the lower part of the body and a spray nozzle mounted in the opening of the side surface of the body, and the spray water pump is connected with the spray nozzle through a pipeline; the heat pump compressor is connected with the coiled pipe heat exchanger, the solar panel and the user heat exchanger through a pipeline.

The invention discloses a shipborne heat pump water heater system which comprises a compressor, a cabin internal condenser, an electronic expansion valve, a cabin external evaporator, a methyl alcohol water storage container, at least two conveying pumps, at least two methyl alcohol water reforming hydrogen production electricity generation modules, a power conversion system, a ship propelling system and an air and residual gas mixer.The methyl alcohol water reforming hydrogen production electricity generation modules integrate reformers and fuel batteries.High-temperature residual gas produced by the reformers is input to the air and residual gas mixer.The air and residual gas mixer is used for mixing external air with the high-temperature residual gas to be medium-temperature mixed gas which is conveyed to the evaporator.The fuel batteries are used for enabling hydrogen and oxygen to generate an electrochemical reaction to produce electric energy to be output and supplied to the compressor, the conveying pumps and the ship propelling system.The shipborne heat pump water heater system can still efficiently work when the temperature of air outside a ship is lower than -5 DEG C, the cabin external evaporator will not frost, self power supply can be achieved, meanwhile, power can be supplied to the ship propelling system, and the heat of the high-temperature residual gas and the heat of external air can be utilized at the same time.

The invention relates to a hydrotalcite used in polymer and a preparation method thereof. The chemical structural formula of the hydrotalcite is M<2+><x>M<3+><y>(OH)<2x+3y-x/2>(CO<3>)<x/4>.4H2O, wherein M<2+> is a divalent metal ion or a mixture of divalent metal ions and is one or two selected from the group consisting of Mg<2+>, Ca<2+>, Ni<2+>, Zn<2+>, Mn<2+>, Cu<2+>, Co<2+>, Pd<2+> and Fe<2+>, M<3+> is a trivalent metal ion and is one selected from the group consisting of Al<3+>, Ga<3+> and In<3+>, x and y are positive numbers, and x/y is equal to 2 to 2.5. The D50 of the hydrotalcite is less than 0.150, and the specific surface area of the hydrotalcite is greater than 30 m2/g. Compared with conventional hydrotalcite filling materials and like, the hydrotalcite provided by the invention has good compatibility with PVC, is free of volatilization, migration and efflorescence, and can be used as a good acid absorption agent for processing of soft, hard and transparent, or non-transparent PVC and as a good stabilizing agent for an organic halogen fire retardant.

The invention discloses a compressed air refrigeration system. The compressed air refrigeration system mainly comprises a compressor, a heat exchanger, an expansion machine, a motor and a circuit control system, wherein when refrigeration is required indoors in summer, the circuit control system switches an indoor system to be in a refrigeration mode, indoor hot air A enters the compressor, is subjected to adiabatic compression and heating, enters an a port of the heat exchanger, is subjected to heat exchange and cooling at the heat exchanger, is sent out from a b port, enters the expansion machine, and is subjected to adiabatic expansion and cooling, and cold air B is sent into the indoor space; and when heating is required indoors in winter, the circuit control system switches the indoor system to be in a heating mode, indoor cold air C enters a c port of the heat exchanger, and after primary heat exchange, hot air D is sent into the indoor space from a d port of the heat exchanger. According to the compressed air refrigeration system, the heat exchange process of the heating mode is carried out at a high temperature, so that the frosting problem is radically avoided, the heating effect is improved, and the energy consumption is reduced; air is selected as a heat transfer medium, so that the pollution of a synthetic refrigerant to the environment is avoided; and the compressed air refrigeration system can be widely applied to winter heating and summer refrigeration systems, and can be applied to refrigeration systems like refrigerating cabinets and refrigerators as well.

The invention discloses a heat pump water heater system of a fuel cell limo. The heat pump water heater system comprises a compressor, a condenser, an electronic expansion valve, an evaporator, a methanol water storage container, a transfer pump, a reformer, a fuel cell, an electric power conversion system, a limo motor and an air residual air mixer. The reformer produces high temperature residual air, to be discharged into the air residual air mixer; the air residual air mixer is used for mixing the outside air with the high temperature residual air to form intermediate temperature mixed gas to be fed to the evaporator; the fuel cell is used for causing hydrogen and oxygen to conduct the electrochemical reaction, to generate electric energy for output; the electric power conversion system is used for converting the electric energy output by the fuel cell into the electricity required by loads, to supply power for the compressor, the transfer pump and the limo motor. The heat pump water heater system of the fuel cell limo can still work efficiently normally when the outside air is lower than zero degree, and the evaporator does not frost. According to the heat pump water heater system of the fuel cell limo, power supply by the limo motor is met, the noise is low, and the air environment is not polluted. The heat pump water heater system of the fuel cell limo can use high temperature residual air and outside air heat simultaneously, thereby being more energy-saving and power-saving.

An integrated external sunshade energy-saving window relates to the technical field of setting venetian blinds on a window. The invention includes a venetian blind. Single-layer tempered glass and hollow tempered glass are respectively arranged on both sides of the venetian blind development direction. The single-layer tempered glass and hollow tempered glass are respectively connected to the window frame through aluminum crimping wires and connecting aluminum corners; the venetian blind The upper end of the shutter is connected with the shutter transmission mechanism, and the shutter transmission mechanism is connected with the rocking handle through the transmission shaft. The invention realizes the purposes of simple structure, convenient installation and maintenance, relatively little influence on indoor temperature change, and long service life.

The invention discloses a high abrasion-resisting paper feed roll which is composed of a plastic skeleton and a rubber wheel or a rubber sleeve sleeved on the plastic skeleton. The high abrasion-resisting paper feed roll is characterized in that the rubber wheel or the rubber sleeve prepared from rubber compositions, and the rubber compositions comprise: a. butadiene rubbers or natural rubbers with good abrasion performance, or the composition of the butadiene rubbers and the natural rubbers; b. a vulcanization system incapable of blushing which is suitable for the butadiene rubbers or the natural rubber, or the composition of the butadiene rubbers and the natural rubbers in a; and c. at least one antioxidant. The high abrasion-resisting paper feed roll has the advantages of extremely high abrasion-resisting performance, high friction force, no blushing and no pollution to paper, and is far more better than the commercial paper feed roll which is admitted to have the best quality.

The invention discloses a water-hydrogen electricity generation heat pump air-conditioning system for a communication base station. The system comprises a compressor, a four-way reversing valve, a heat exchanger inside a machine room, a throttle valve, a heat exchanger outside the machine room, a methanol-water storage vessel, a conveying pump, a reformer, a fuel cell, an electric power conversion system, communication equipment and an air and residual gas mixer, wherein the reformer generates high-temperature residual gas and discharges the high-temperature residual gas to the air and residual gas mixer or to the outside; the air and residual gas mixer is used for mixing external air with the high-temperature residual gas into medium-temperature mixed gas and outputting the medium-temperature mixed gas to the heat exchanger outside the machine room; the fuel cell is used for carrying out electrochemical reaction of hydrogen and oxygen to generate electric energy for output; the electric power conversion system is used for converting the electric energy output by the fuel cell into electricity required by loads to supply power to the compressor, the conveying pump and the communication equipment of the communication base station. Under heating conditions, when outdoor air is below minus 5 DEG, the system can still work normally and efficiently, and an evaporator cannot be frosted; and the system can meet power supply to the communication equipment, does not need power supply from an external grid and is free of geographic restrictions.

The invention relates to the technical field of heat pumps, in particular to a heat pump system with a fuel gas as a heat source. The heat pump system comprises a refrigerant loop and a fuel gas combustion chamber, wherein the refrigerant loop is communicated via a compressor, an indoor heat exchanger, a throttling device and an outdoor heat exchanger in sequence; the outdoor heat exchanger is arranged inside the fuel gas combustion chamber and is used for exchanging heat with a high-temperature gas generated after the fuel gas is combusted inside the fuel gas combustion chamber. According to the heat pump system, the fuel gas is adopted as the heat source, the heat of the combusting fuel gas can be exchanged with that of the outdoor heat exchanger; meanwhile, the outdoor heat exchanger is arranged in a relatively sealed high-temperature gas environment, and sufficient heat exchange can be achieved, so that nearly all heat of the combusting fuel gas can be transferred into a room, and thus indoor heating can be achieved; the heat pump system is high in fuel gas utilization rate and good in heating effect; the outdoor heat exchanger is arranged inside the fuel gas combustion chamber and is not frosted, so that the heat exchange effect can be ensured, and the heat pump system is not constrained by a low-temperature environment.

A fructus lycii dewaxing and drying agent comprises, by mass, 1-10% of sodium ascorbate, 1-20% of sodium citrate, 1-40% of sodium bicarbonate, 0-5% of palm oil ascorbate, 0-5% of polyglycerol fatty acid ester, 0-5% of sucrose fatty acid ester, 0-5% of glycerol citrate, 0-10% of absolute ethyl alcohol and 50-95% of water. When used for dewaxing, the agent has the advantages of being efficient, freeof frosting, resistant to oxidation, capable of achieving color protection and the like.

The invention provides flat tempered low-altitude glass. The glass comprises upper glass and lower glass, which are flat tempered glass, wherein edge sealing strip frames are arranged on the peripheries of the welding surfaces of the upper and lower glass; the peripheries of the upper and lower glass are welded together through low-temperature glass solders; and a closed low-altitude layer is formed between the upper glass and the lower glass and is internally provided with supports which are arranged in a lattice manner. A manufacturing method of the low-altitude glass provided by the invention is simple in process; and the manufactured tempered low-altitude glass can overcome defects in the prior art and can be subjected to mass production.

The invention relates to a frostless high and low temperature testing machine which comprises a box body, a testing cabin arranged in the box body, a first cavity connected with the testing cabin, a refrigerating device and a control system. The testing cabin is communicated with the first cavity through an air inlet and an air outlet, and the frostless high and low temperature testing machine further comprises a drying device, a heating device and a circulating fan. The observation window is provided with at least one operation port. According to the frostless high and low temperature testing machine, the testing temperature range is -82 DEG C to 180 DEG C, the testing range is wide, long-time operation can be kept at the low temperature, through the adoption of the box body structure and the drying device, even if the temperature is as low as -82 DEG C and the observation window is large in size, it can still be ensured that the testing chamber and the observation window cannot be frosted, and the aging test requirements on products in the high-precision industrial field are met.