70results about How to "Prevent ice blockage" patented technology

The invention relates to a mine liquid-CO2 fire preventing and extinguishing process and device for preventing and extinguishing fire by conveying liquid CO2 to an underground fire zone and injecting a fire zone by using the liquid CO2 and utilizing the liquid CO2 to asphyxiate oxygen in the fire zone, cool, decrease temperature and inertly suppress explosion. A mine liquid-CO2 fire preventing and extinguishing system comprises a liquid CO2 tank car (1), a liquid CO2 storage tank (2), a carburetor (10), a self-pressurization pipeline, a liquid inlet and outlet pipeline, and the like; and the fire preventing and extinguishing device comprises the liquid CO2 storage tank (2), the carburetor (10), the self-pressurization pipeline, the liquid inlet and outlet pipeline, and the like, wherein the self-pressurization pipeline comprises a self-pressurization liquid outlet pipeline and a self-pressurization gas intake pipeline and is combined with the carburetor (10) to form a self-pressurization system so as to realize the self comprehension of pressure in the tank. The invention solves the technical problem of the gasification and icing in the liquid CO2 tank and the pipeline conveying process, realizes safe transfer, storage, transmission and injection and has the advantages of high extinguishment speed, simpleness of operation, low cost, operation stability, remarkable fire extinguishment and prevention effects, wide practicability and the like.

A refrigerator defrosting heater and a control method thereof are provided. The refrigerator defrosting heater is characterized in that a main heater and an auxiliary heater are arranged in group and controlled independently, the main heater is a defrosting heater for an evaporator, and the auxiliary heater is a defrosting heater consisting of a defrosting tray and a drainage pipe. The control method comprises: the main heater and the auxiliary heater are started synchronously to defrost when the defrosting operation is initiated; the main heater is stopped when the evaporator is defrosted completely, while the auxiliary heater continues working; the auxiliary heater is stopped when the defrosting tray and the drainage pipe are defrosted completely; and the whole defrosting process is ended. The invention is particularly suitable for the use in an air-cooling refrigerator and can efficiently prevent the drainage pipe from being blocked by ices and reduce the energy consumption.

The invention provides a refrigerator which comprises a refrigerator body, a blower component and a one-way air inlet valve, wherein the refrigerator body is internally provided with a storage cavity, the wall of the storage cavity is provided with a drainage channel, and water in the storage cavity can be discharged to the exterior of the storage cavity along the drainage channel; the blower component is arranged at the outlet of the drainage channel and blows air outwards from the outlet of the drainage channel so as to assist the drainage channel to discharge the water outwards; the one-way air inlet valve is arranged on the refrigerator body and is communicated with the storage cavity; air outside the refrigerator body can enter into the storage cavity through the one-way air inlet valve when negative pressure is formed in the storage cavity. The refrigerator is simple in structure and convenient to manufacture, can effectively increase the humidity in the storage cavity so as to better meet the vegetable preservation requirement when the interior of the storage cavity is dry, and is relatively obvious in practicability.

The invention provides a condensed water collecting device for an air-cooled type three-temperature-zone refrigerator. The air-cooled type three-temperature-zone refrigerator comprises a refrigerating chamber (2), an alternating temperature chamber (3) and a freezing chamber (4), wherein the rear part of the freezing chamber is provided with an evaporator (5) and a freezing air channel; an alternating temperature chamber air channel cover plate (13), an alternating temperature chamber air outlet (14) and an alternating temperature chamber return air inlet (15) are arranged in the alternating temperature chamber (3); the rear parts of the freezing chamber (4) and the alternating temperature chamber (3) are provided with an alternating temperature chamber return air channel (17), and the alternating temperature chamber return air inlet (15) is connected with the alternating temperature chamber return air channel (17); and the surface of the alternating temperature chamber air channel cover plate (13) is provided with a water guide strip (16). The condensed water generated on the alternating temperature chamber air channel cover plate is guided by the water guide strip (16).

The invention discloses a gas direct contact type ice slurry preparation system. The system comprises three parts of refrigerant circulation, gas circulation and ice-making solution circulation, wherein a refrigerating medium adopts an environmental-friendly gas, such as air, nitrogen, and the like. Compared with a liquid refrigerating medium, the gas with same mass can generate more air bubbles in an ice slurry generator so as to increase the heat exchange area; the gas is easier to realize higher gas inlet speed so as to promote the diffusion of the air bubbles; the temperature distribution in the ice slurry generator is more even, the local supercooling is prevented, and the probability of generating an ice blockage is reduced. In addition, a first-class heat exchanger is adopted in the system. A refrigeration system evaporator is arranged in the first-class heat exchanger, and a refrigerating medium gas directly contacts with solution (ethanediol solution) in the first-class heat exchanger to exchange heat. Because of the intensive disturbance function of the gas, the convection heat exchanging factor of the refrigerating medium and the evaporator is greatly increased, and the problem of larger heat resistance caused by direct convection heat exchange of the gas and the refrigerating system evaporator is solved. Accordingly, the gas with higher temperature passes through refrigerating medium solution with lower temperature, thereby achieving the aim for removing water in the gas and further reducing the probability of the ice blockage of the system.

The invention relates to a dustproof and antifreezing agent for coal transportation and a preparation method thereof. The dustproof and antifreezing agent consists of sodium carboxymethyl cellulose, magnesium chloride, calcium chloride, boric acid and water. The preparation method comprises the following steps: 50 percent of water is respectively added into a reaction kettle 1 and a reaction kettle 2; the sodium carboxymethyl cellulose is added into the reaction kettle 1 and is evenly stirred and dissolved to obtain solution for standby; the magnesium chloride, the calcium chloride and the boric acid are added into the reaction kettle 2 and are stirred and dissolved to obtain solution for standby; and the solutions obtained from the reaction kettle 1 and the reaction kettle 2 are added into a reaction kettle 3, are evenly stirred and mixed and are put into a container to form a finished product of the dustproof and antifreezing agent. The method has the advantages: 1. the dustproof and antifreezing agent is sprayed on the surface of a coal layer of a coal transportation vehicle to form a wet dustproof and antifreezing layer which has the functions of wind prevention, dust inhibition and jounce and spraying prevention, is sun-resistant and uncracked in summer and does not ice in cold winter; 2. in winter, the spraying of the dustproof and antifreezing agent can be enlarged to the inner wall and a base plate of an empty coal loading vehicle to form an ice-free wet isolation layer; and 3. when coal is filled, the layered spraying of the dustproof and antifreezing agent can be also enlarged to the middle between coal layers to form an antifreezing layer between the coal layers.

The invention provides a vortex direct contact ice maker, characterized in that: ice making container is connected smoothly of the upper half part of cylindrical flow stabilizing cavity and the lower half part of conic separating cavity, the center of top end cover of the ice making container is equipped with funnel ice slurry outlet and the bottom equipped with cryogen outlet, the top of the flow stabilizing cavity is respectively equipped with pairs of uniformly separated and symmetrically distributed secondary refrigerant and water solution spray nozzles in the tangent direction of the cylinder wall; when making ice slurry, the secondary refrigerant and water solution injected into the flow stabilizing cavity form vortex and fully mix and exchange heat with each other to make a part of water solution turn into ice slurry, and they are respectively separated and discharged under the action of centrifugal force of the vortex and gravity. And the ice maker solves the problem of separation of ice slurry from water solution and secondary refrigerant, avoiding ice jam happening caused by adhesion of ice slurry particles and the problems of large secondary refrigerant dosage caused by carrying secondary refrigerant and ice slurry into ice storage cylinder and of carrying water solution into plate heat exchanger, further improving the efficiency and running stability.

The invention relates to the technical field of oil and gas field down-hole operation, and specifically relates to a low-pressure sandstone reservoir gas well temporary blocking workover fluid and a preparation method thereof. The workover fluid is composed of the following components, according to percentages in the wellbore volume: 10-20% of an alcohol-based temporary blocking workover fluid, 0.5-1% of an oil-based spacer fluid, and 79-89.5% of a high-efficiency clay stabilizing agent. The alcohol-based temporary blocking workover fluid is composed of the materials of, by mass, 0.5-1% of a water-absorbent polymer, 1-2% of temporary blocking fiber, 0.5-1% of a fiber dispersing agent, 45-50% of water, and balance of alcohol. The high-efficiency clay stabilizing agent is composed of the materials of, by mass, 0.6-1% of a clay stabilizing agent and 99-99.4% of water. With the workover fluid provided by the invention, effective temporary blocking can be realized upon a porous sandstone reservoir; and the harm of the workover fluid upon stratum can be reduced. The workover fluid also has the characteristic of good salt tolerance. With the workover fluid, hydrate blockage is not formed. The workover fluid is safe and environment-friendly, and is convenient for construction.

According to a fuel cell cold starting device and a method thereof, a first gas path system, a second gas path system and a heating assembly are all controlled by a central control system. During cold start, the first gas path system generates heat through compressed air to heat a cathode of a fuel cell stack, the second gas path system conveys hydrogen to enable the fuel cell stack to perform hydrogen-oxygen reaction heat release, and meanwhile, the heating assembly receives a power signal to perform heating. Through the above three heating processes, the fuel cell system, especially a fuel cell stack, is rapidly heated, so that the temperature value and the internal resistance value of the fuel cell system reach numerical values required by cold start, cold start in a short time is rapidly realized, the time required by cold start is shortened, and the efficiency is high; besides, during shutdown, air and hydrogen are adopted to blow the system at the same time to dry residual moisture, and whether the humidity in the system meets the requirement or not is judged by monitoring the rising condition of the internal resistance value, so that blowing is controlled to be stopped, and conditions are created for next cold start.

The invention relates to a high-pressure natural gas pressure energy refrigeration method for junked tire cryogenic pulverization. The pressure energy of high-pressure natural gas is converted into mechanical work and cold energy through an expansion machine in a natural gas regulator station. The mechanical work and the cold energy are recycled through refrigerants, the mechanical work is used for compressing the refrigerants, the compressed high-pressure refrigerants are cooled through an optimally-designed heat exchange network through the cold energy generated through the expansion of the high-pressure natural gas, the gas inlet temperature of the high-pressure natural gas entering the expansion machine is improved, and the mechanical work generated by the expansion of the high-pressure natural gas is increased. The cooled high-pressure refrigerants are conveyed to a junked tire cryogenic pulverization area through a heat preservation pipeline, low-temperature cold energy below -100DEG C is generated by the high-pressure refrigerants through the refrigerant expansion machine, the mechanical work generated by the expansion of the high-pressure refrigerants is used for the primary pressure boost of the refrigerants with the cold energy used up, the refrigerants are conveyed back to the natural gas regulator station, and a refrigerating cycle is formed. The high-pressure natural gas pressure energy refrigeration method has the advantages of effectively utilizing energy and preventing ice blockage, and belongs to the field of natural gas pressure energy utilization.

The invention relates to an integrated hydrogen supply system of a fuel cell; the system comprises an integrated shell, the integrated shell comprises a gas-water separator shell on the lower portion, an ejector shell on the upper portion and a buffer cavity shell, and a hydrogen circulating pump is installed on the ejector shell; a hydrogen return inlet is formed in one side of the gas-water separator shell, a water outlet is formed in the bottom of the gas-water separator shell, a hydrogen return outlet is formed in the top of the gas-water separator shell, and a labyrinth structure is installed in the gas-water separator shell and used for separating water in hydrogen-containing mixed gas; the gas-water separator shell, the ejector shell and the buffer cavity shell are integrated into a whole, and the hydrogen circulating pump is integrated on the ejector shell, so that the volume is small, the hydrogen circulating pump can be mounted and used in some areas with small spaces, connecting pipelines between hydrogen supply components of a hydrogen path are omitted, the gas transmission distance is short, and the energy loss in the transmission process is reduced. And the pressurizing efficiency is improved, the mounting efficiency is high, and the freezing blockage condition caused by accumulated water in the pipeline when the temperature is too low is avoided.

The invention belongs to the technical field of helicopter anti-icing and particularly relates to an engine air inlet protection grille. The engine air inlet protection grille comprises a longitudinalheating assembly (1), a transverse heating assembly (2) and a power distribution control box (3). The longitudinal heating assembly (1) and the transverse heating assembly (2) each comprise bus barsat the two ends and heating elements, wherein the heating elements are connected with the bus bars at the two ends. The two sets of heating elements are arranged in a crossing manner, so that a grid structure in a shape with the curved surface is formed. The power distribution control box (3) is configured to be used for controlling a switch of a power source to be on or off according to a controlcommand. By means of grille holes of the grid structure, large-particle foreign matter can be prevented from being sucked into an engine, and the grill holes can be prevented from being blocked due to icing; and long-time continuous working safety, achieved in an icing environment, of the engine is guaranteed. When the engine air inlet protection grille is combined with an air inlet antisand device with a bypass for use, the effects of combining sand resistance, foreign matter resistance, bird strike resistance and safety of long-time flying in an icing environment can be achieved.

The invention provides a device for preventing icing blockage of a ventilation pipeline and an automobile engine, and relates to the technical field of automobiles. The device for preventing icing blockage of the ventilation pipeline comprises an thermal expansion and cold shrinkage mechanism, a heating and heat preservation circuit and a heating and heat preservation layer, wherein the thermal expansion and cold shrinkage mechanism and the heating and heat preservation layer are both connected with the heating and heat preservation circuit, the heating and heat preservation layer is used forwrapping the outer side of the crankcase ventilation pipeline, the expansion and the shrinkage of the thermal expansion and cold shrinkage mechanism can control disconnection and connection of the heating and heat preservation circuit so that the crankcase ventilation pipeline can be heated when the heating and heat preservation circuit is connected. The automobile engine comprises the device forpreventing icing blockage of the ventilation pipeline. According to the device and the automobile engine, the technical problems that in the prior art, aging of the crankcase ventilation pipeline is likely to be accelerated, the structure is complex and the control is complex are solved.

The invention relates to the field of ventilation air inlet of a crankcase of an automobile engine, in particular to a structure of an escape pipe of an air cleaner of an air inlet system. According to an anti-icing structure of a PCV opening of the escape pipe of the air cleaner of the air inlet system, the PCV opening outwards extends naturally to form a PCV opening connecting section; a PCV connector comprises a ventilation pipe section, a jointing face and an air outlet pipe section, the inner wall of the connecting position of the ventilation pipe section and the air outlet pipe section is in smooth transition, the jointing face is arranged at the junction of the ventilation pipe section and the air outlet pipe section, and the air outlet pipe section is inserted into the PCV opening connecting section; and the PCV connector is fixedly installed on the PCV opening connecting section through the jointing face in a sealing manner, the inner diameter of the air outlet pipe section is not smaller than the inner diameter of the ventilation pipe section, and the wall thickness of the end face of the ventilation pipe section needs to be designed as thin as possible. According to the anti-icing structure, the structure at the connector is reasonably arranged, condensate water of a curved through pipe is prevented from staying at the PCV opening, the extra space and the extra cost do not need to be additionally increased, poor ventilation caused by icing blockage of the PCV opening can be avoided, and the reliability of a vehicle in an extremely-cold region is improved.

The invention discloses a cold water air conditioner system comprising a plate-type evaporator, a compressor and a condenser. The plate-type evaporator, the compressor and the condenser are connected through a pipeline. A temperature sensor and a pressure sensor are mounted on an air suction pipeline of the compressor. A bypass pipeline is connected on an outlet pipeline of the compressor. The other end of the bypass pipeline communicates with an inlet pipeline of the plate-type evaporator. An electromagnetic valve is mounted on the bypass pipeline. When the actual superheat degree is smaller than the standard superheat degree and the air suction pressure is smaller than the standard air suction pressure, the electromagnetic valve is opened. When the actual superheat degree is larger than or equal to the standard superheat degree or the air suction pressure is larger than or equal to the standard air suction pressure, the electromagnetic valve is opened. A pressure balancing valve is not adopted to preventing ice blockage any more but a common electromagnetic valve is adopted to achieve the ice blockage preventing effect, so that the ice blockage preventing cost is reduced greatly. Compared with the pressure balancing valve, the electromagnetic valve is higher in precision, smaller in weight and more precise in controlling, it is guaranteed that the interior of the evaporator is free from icing, and the ice blockage phenomenon of the plate-type evaporator is removed thoroughly.

The invention provides an ice-making device and method for a refrigerator. The ice-making device comprises an ice-making mould arranged in a first refrigeration room with the temperature being lower than 0 DEG C and provided with a plurality of ice-making cavities, a water storage device filled with high-pressure water, a water feeding pipe communicating with the water storage device and the ice-making cavities, a valve and a controller, wherein the valve and the controller are arranged on the water feeding pipe and are in communication connection; the water storage device is arranged in a second refrigeration room with the temperature being higher than 0 DEG C; on the one hand, in the process that supercooled water enters the ice-making cavities from the water feeding pipe, the phenomenon of ice plugging of the supercooled water in the water feeding pipe can be prevented; on the other hand, after the supercooled water flows out of the water storage device, the pressure intensity of the supercooled water is relieved, and the freezing point is raised, so that the supercooled water is quickly solidified into ice after entering the ice-making cavities, and the ice-making speed is increased; and meanwhile the ice-making cavities are in a closed state, the phenomenon of taint of odor of the supercooled water can be prevented, and the quality of a made ice block is improved.

The invention provides a water pan assembly capable of avoiding freezing blockage, an air conditioner and a control method. The water pan assembly comprises a water pan body and a drain pan, wherein the drain pan is arranged on one side of the water pan body. According to the water pan assembly capable of avoiding the freezing blockage, the air conditioner and the control method, the drain pan isused for filtering condensate water, ice pieces and the like in the condensate water are left on the drain pan, the ice pieces are prevented from blocking drain holes, when the drain hole positions are frozen, a dredging structure is used for breaking and dredging frozen ice at the drain hole positions, then the effect of avoiding freezing and blocking is further improved, a water level detectionmechanism is used for detecting the water level inside the water pan body in real time, when the water level reaches a set value, whether the freezing problem exists in the water pan body or not is judged according to a corresponding control strategy to conduct corresponding icebreaking operation, and a risk that defrosting water overflows from the water pan body and flows to the ground of a refrigeration house to freeze the ground or pollute goods is greatly reduced.

The invention provides an oxygen generation control system of a PSA oxygen generator. The PSA oxygen generator comprises an air compressor, a freezing dryer and an oxygen generator; an oxygen generation control system of the PSA oxygen generator at least comprises an air tank drainage system, an oxygen concentration adjusting control and alarm system, a freezing dryer control system, a PLC controlprogram and a network control system; the air tank drainage system at least comprises a pressure sensor mounted at the bottom of an air storage tank, a drainage air control valve mounted at the bottom of the air storage tank and a dew point monitoring device mounted at an exit of the air storage tank. In the drainage system of the control system, a pressure sensor and a drainage air control valveare mounted at the bottom of the air storage tank, and a dew point monitoring device is mounted at the exit of the air storage tank; the drainage time and drainage interval of the air tank can be accurately controlled according to the pressure and dew point of the air tank; therefore, the oxygen generation control system of the PSA oxygen generator has the advantages of more accurate control, more stable performance and high safety.

The invention relates to an integrated gas-water separator for a fuel cell; the separator comprises a gas-water separator shell, a return hydrogen inlet formed in one side of the gas-water separator shell, a water outlet formed in the bottom of the gas-water separator shell, and a return hydrogen outlet formed in the top of the gas-water separator shell, and further comprises a gas outlet detection pressure gauge mounted on the gas-water separator shell close to the hydrogen return outlet, a liquid level meter arranged on the gas-water separator shell close to the water outlet, a drain valve arranged on the gas-water separator shell at the water outlet, a heater, a nitrogen discharge valve and a labyrinth structure. The gas-water separator is compact in structure, small in size and high in integration degree, the gas outlet detection pressure gauge is used for detecting the gas pressure of the hydrogen return outlet to guarantee that the gas outlet pressure meets the requirement, the liquid level meter is used for detecting the water level of the bottom in the gas-water separator shell, and after the water level reaches a set value, the drain valve is opened in time to drain water. The heater is used for heating the bottom of the gas-water separator shell to prevent the water outlet from being frozen and blocked.

The invention relates to supercooled water dynamic ice storage equipment and an ice making method thereof. The supercooled water dynamic ice storage equipment comprises a cold accumulation device, anice storage groove and a water pump, wherein every two of the cold accumulation device, the ice storage groove and the water pump are connected through a pipeline; water circulates in the supercooledwater dynamic ice storage equipment, is cooled into supercooled water in the cold accumulation device, the supercooled water enters the ice storage groove, and water in the ice storage groove enters to the cold accumulation device once more under the action of the water pump to be cooled. The ice making method can realize the dynamic ice making function in a cold accumulation tank; in the cold accumulation tank, ice melts into water, and water enters a subcooler once more to realize circulating ice making, and at the same time, during the process that the subcooler makes supercooled water, aninner cylinder does not generate an ice blockage phenomenon due to icing of the inner cylinder wall.

The invention provides an inflatable solar water heater thermal insulation and antifreeze airbag, which includes a solar module installed on a solar installation frame, an L-shaped installation frame is installed on the upper and lower sides of the solar energy installation frame, and the upper and lower two L-shaped installation frames are respectively installed. There is an air suction pump and an air intake pump, the air intake of the air extraction pump is connected to the air bag through the air extraction pipe, the air outlet of the air intake pump is connected to the air bag through the air intake pipe, a mounting part is installed on the solar module header via bolts, the An airbag is installed on the mounting part, and a guide plate inclined from right to left is installed on the solar energy mounting frame. The present invention uses an air intake pump to fill high-pressure gas into the telescopic air pipe to make the telescopic air pipe stretch and prevent heat loss in the vacuum pipe. Or when the temperature is low on cloudy days, the pipeline will be cracked or blocked by freezing. It has high safety. The use of pearl cotton insulation material has excellent thermal insulation effect, light weight and low cost, and can maintain the temperature of the vacuum tube for a long time.

The invention discloses a low-temperature defrosting water pan and drainage pipeline and a use method thereof. The low-temperature defrosting water pan and drainage pipeline comprises an evaporator, a heating assembly arranged outside a refrigeration house and a water pan arranged below the evaporator, wherein the bottom of the water pan communicates with a water outlet pipe, the bottom end of the water outlet pipe communicates with a first water guide pipe, and the bottom end of the first water guide pipe communicates with a second water guide pipe through a connector. The invention relates to the technical field of evaporator auxiliary equipment. According to the low-temperature defrosting water pan and drainage pipeline and the use method thereof, anti-freezing liquid is heated through the heating assembly, conveyed into the pipeline and the water pan through a circulating pump and then returned into the heating assembly through a return pipe for continuous heating circulation, so that when an evaporator is in the defrosting working condition, the anti-freezing liquid heating assembly works, the temperature of the water pan and drainage pipeline is kept above 0 DEG C, the phenomenon that melted water, the water pan and drainage pipeline are frozen when the evaporator carries out a defrosting procedure is prevented, and the phenomenon that the evaporator is blocked by ice due to the fact that the water pan and drainage pipeline is frozen is avoided.

The invention discloses a cascade type supercooling method ice storage system. The cascade type supercooling method ice storage system comprises a water chilling unit, a double-way pump, a low-temperature condenser, a throttling valve, a compressor, an evaporator, a refrigerating medium pump, a supercooling heat exchanger, a supercooling reliever, an ice storage groove, an ice storage pump, a heatexchanger and end equipment; the water chilling unit, the double-way pump and the end pump form a cold supply loop; the water chilling unit, the double-way pump, the cold side of the low-temperaturecondenser and the first hot side of the hot exchanger form a refrigerating / preheating loop; the hot side of the low-temperature condenser, the throttling valve, the cold side of the evaporator and thecompressor form a refrigerating agent loop; the hot side of the evaporator, the cold side of the supercooling heat exchanger and the refrigerating medium pump form a refrigerating medium loop; and the hot side of the supercooling heat exchanger, the supercooling reliever, the ice storage groove, the ice storage pump and the cold side of the heat exchanger form a supercooling loop. The cascade type supercooling method ice storage system is high in operating reliability, can effectively reduce the energy consumption of an ice making system and can increase the system COP; meanwhile, the prepared dynamic ice slurry is high in cooling speed and high in heat exchange efficiency, and the operation cost and the initial cost are greatly reduced.

The invention provides a device capable of realizing high-efficiency preparation of ice slurry, and provides the improvement thereof in the industrial production. The device adopts a gas direct contact method; and on this basis, a coiled tube type precooling sleeve and a nozzle gas transmission auxiliary heat exchange device are additionally arranged to largely enhance the ice slurry preparation effect and to improve the preparation efficiency. The precooling sleeve is formed by coiling a copper tube around an ice slurry preparation device; when gas flows through the coiled tube type copper tube, solution can be precooled firstly, and the stop time of the gas in the device is prolonged, so that the whole heat exchange efficiency is improved; and a nozzle device prolongs the stop time of the gas in the device to increase the heat exchange area between the gas and the solution. In addition, a vacuum insulation measure is added, and a vacuum thermal insulation principle is used for vacuumizing the middle part of two layers of an outer barrel of the device, so that the cooling capacity loss of secondary refrigerant gas to the environment when flowing in the device is reduced. Through the improvement, experiments and industrial production equipment are simplified and optimized to facilitate the construction and the later maintenance.

The invention discloses a water-absorbing tube cleaner. The water-absorbing tube cleaner comprises a cylindrical metal barrel, macromolecular water-absorbing resin located in the cylindrical metal barrel, an arc-shaped water collector, balls inlaid into the barrel wall of the cylindrical metal barrel, flow guiding pipes arranged on the inner side of the barrel wall of the cylindrical metal barrel, a packing cup fixed to the tail end of the cylindrical metal barrel, and a packing cup tube cleaner connected with the tail end of the cylindrical metal barrel, wherein the barrel wall of the cylindrical metal barrel is of a hollowed-out netty structure; the arc-shaped water collector is arranged at the front end of the cylindrical metal barrel; the surface of the arc-shaped water collector is provided with a plurality of small holes; the surfaces of the flow guiding pipes are provided with a plurality of small holes; one ends of the flow guiding pipes are communicated with the small holes of the surface of the arc-shaped water collector, and the other ends of the flow guiding pipes extend into the bottom of the cylindrical metal barrel; the pipe walls of the flow guiding pipes make contact with the macromolecular water-absorbing resin. The water-absorbing tube cleaner is high in water-absorbing property and capable of cleaning up residual water in the low-lying positions of natural gas and oil product pipelines, and the corrosion and ice blockage phenomena of the pipelines are effectively relieved.

The invention discloses a domestic refrigerator freeze evaporator integrated assembly device and relates to the technical field of refrigerator equipment. The domestic refrigerator freeze evaporator integrated assembly device comprises a heater integrated assembly and a defrosting tray. The heater integrated assembly comprises a plastic shell terminal, fuses, a thermoplastic pipe and a heating pipe. Two ports of the heating pipe are connected with a power connection portion inside the plastic shell terminal, the heating pipe comprises an R-shaped heating pipe, a straight heating pipe and a curved heating pipe, a rectangular heating pipe formed by the R-shaped heating pipe and the straight heating pipe and the curved heating pipe arranged at one end are of an integrated structure, the two right-angle portions of the rectangular heating pipe are provided with the fuses, a freeze evaporator is installed inside the rectangular heating pipe, and side plates are arranged on the circumferential side of the curved heating pipe installed on the bottom face of the defrosting tray. The domestic refrigerator freeze evaporator integrated assembly device has an obvious heat transfer efficiency improving effect, the whole device can achieve intelligent defrosting and has a protection function for a system after assembling is completed, the product componentized supply capability is improved,and product assembling is easy.

The invention discloses a method for preparing fluidized ice, comprising the wet air condensing ice making circle and the refrigerant circle which are carried out simultaneously, wherein a cold source is provided for the wet air condensing ice making circle by the refrigerant circle. A device for making the flow ice by adopting the method comprises a wet air condensing ice making circle assembly and a refrigerant circle assembly, wherein the wet air condensing ice making circle assembly comprises an atmospheric condenser, a fan, an air volume control valve, an ice making room, a subcooled water thawing device, an ice storage tank and an ice-water separator; and the refrigerant circle assembly comprises an atmospheric condenser, a refrigerating compressor, an air condenser, an expansion valve and an ice making room. The invention ensures that the system is stable and energy-saving, the ice making efficiency is high, and the ice blockage is avoided.

The invention provides a heat pump system provided with a water pan die-icing pipeline. The system is characterized in that a preheating system is additionally arranged on the bottom surface of a water pan of a fin type evaporator, wherein the preheating system comprises a working medium pipeline; one end port of the working medium pipeline is connected to a gate J of an indoor heat exchanger, andthe other end port of the working medium pipeline is connected to an outlet of a first one-way valve; the working medium pipeline is an one-way pipeline is connected to a fourth one-way valve; the outlet end of the one-way valve is connected to the outlet of the first one-way valve. According to the heat pump system provided with the water pan di-icing pipeline, the preheating system is additionally arranged on the bottom surface of the water pan, so that the temperature of the water pan can be increased, and the defogging efficiency is improved, and as a result, the water pan is prevented from being iced and blocked; a hot working medium pipe is de-iced, so that the temperature of the evaporator can be decreased, and the heat absorbing capacity of the fin type evaporator can be improved,and as a result, the air absorbing heating performance of a heater in a low-temperature environment can be improved; the water pan can be prevented from being iced and blocked, and meanwhile, the heating performance of the heater in the low-temperature environment can be improved.