49results about How to "Freezing will not occur" patented technology

The invention discloses an injection mold for quick cooling and convenient demolding. The injection mold comprises a first electric extension rod, an unloading hopper and a limiting rod; a second electric extension rod is arranged in middle of the first electric extension rod; a first cooling pipe is arranged on the outer side of the second electric extension rod; the front end of the first cooling pipe is connected with a movable template; the outer side of the movable template is connected with a support frame through a slide rod; a fixed template is fixed on the inner side of the support frame; an injection molding pipe is connected to the back side of the fixed template; the lower end of the unloading hopper is connected with an injection molding pipe; a motor is mounted on the right side of the injection molding pipe; a support main body is arranged below the injection molding pipe; and a conveying belt is arranged on the left side of the support main body. The injection mold forquick cooling and convenient demolding is provided with a first cooling pipe and a second cooling pipe, and can accelerate the cooling molding work through the first cooling pipe and the second cooling pipe to improve the overall working efficiency and the overall functionality.

The invention relates to a top water bath split type solar water heating device, in particular to a single-apartment solar heat collector which realizes centralized arrangement. The invention consists of a watertight heat collector, a bearing indoor water tank, a heat exchange circulating pipe network, various control parts and an intelligent control system. The topside of the product is provided with the watertight heat collector; an emptied pipeline is arranged between an upper circulating water pipeline and a lower circulating water pipeline. An emptied electromagnetic valve is arranged on the emptied pipeline. The underside of the emptied pipeline is provided with an accumulated water discharge pipeline. Each heat collecting pipe is provided with a metal heat exchange pipe. The single-apartment solar heat collector has a compact structure and complete functions and solves a series of problems that the prior product has messy arrangement, influences city appearance, destroys a waterproof lay surface on the top of the building, wastes mass cool water energy discharged in use and causes pipe explosion, water leakage, easy ignition and combustion of a tracing band, etc. because of the phenomena of the temperature difference of feeding water, stream distillation, freezing and plugging and stream expansion, etc. The single-apartment solar heat collector is a perfect solar water heating device.

The invention discloses a pneumatic draining valve for a locomotive air source system filter. The pneumatic draining valve comprises a shell provided with a filter port, a sewage storage cavity, a draining passage and a piston cavity. A gas cavity which can be inflated and deflated is formed between a piston and the right end of the piston. The piston is of a dumbbell shape and includes a left piston part, a right piston part and a middle load bearing part. The middle load bearing part is provided with a left stress face and a right stress face. The area of the left stress face is smaller than that of the right stress face. By the pneumatic draining valve, long exhaust when an electromagnetic draining valve is used is eliminated. Due to the fact that no elastic components are used and only air pressure is used to push the valve element (namely the piston) to move, blocking, caused by elastic component failure, of the existing pneumatic draining valves is eliminated. The application environmental temperature range of the draining valve is widened by a heating rod. In addition, the pneumatic draining valve is simple in structure and low in cost, and use and maintenance cost are lowered.

The invention discloses an apparatus for testing the bending strain critical performance of a superconducting strand. An upper stress loading rod and a lower stress loading rod are positioned in a sample rod, the upper end of the upper stress loading rod stretches out of the upper end of the sample rod, a dynamic sealing device is arranged at the upper end of the sample rod, the lower end of the lower stress loading rod stretches out of the lower end of the sample rod, the lower end of the lower stress loading rod is connected with a bending test module, the bending test module is fixedly connected with the lower end of the sample rod, an upper current leading wire is connected with a lower current leading wire, the upper current leading wire and the lower current leading wire traverse through the internal of the sample rod, the upper end of the upper current leading wire stretches out of the upper end of the sample rod, the lower end of the lower current leading wire is connected with the bending test module, a supporting rod is positioned in the sample rod, and the lower end of the supporting rod stretches out of the lower end of the sample rod and is fixedly connected with the bending test module. A sample bending stress loading structure has the advantages of novel design, reliable contact at a low temperature, realization of application of a high current, and easiness in operation and no damages to the superconducting strand during sample replacement.

The invention discloses a closed-loop circulation drying system based on two-stage solution dehumidification. The system comprises a drying medium circulation subsystem, a first-stage solution dehumidification-regeneration circulation subsystem, a second-stage solution dehumidification-regeneration circulation subsystem, a first heat pump circulation subsystem and a second heat pump circulation subsystem. The two-stage solution dehumidification technology is adopted to dehumidify a drying medium, so the problems that in the traditional cooling dehumidification process, a heat exchanger is prone to freezing, and energy consumption is large are solved; the hygroscopic solution is regenerated by adopting the vacuum technology, so the solution regeneration energy consumption is reduced, and the generated secondary steam is recycled by utilizing the compression technology, so the problem that the latent heat of water vapor is not utilized in the traditional cooling and dehumidifying processis solved; the mechanical heat pump technology is adopted for adjusting the solution dehumidification and regeneration temperature, so the energy utilization rate of the system is increased.

The invention discloses a preparation method of a solvent-based brittle self-peeling radioactive detergent. The preparation method comprises the following steps: adopting methacrylic acid as a soft monomer in a free radical polymerization product, methyl methacrylate as a hard monometer in the free radical polymerization product and acrylamide as a functional monomer in the free radical polymerization product; adding nanosilicon dioxide with different grain sizes and a functional additive in the preparation process of the detergent. The detergent obtained by the preparation method can be used in an environment of below 0 DEG C and cannot generate an icing phenomenon; meanwhile, when the decontamination is performed on the surfaces of a precision instrument and equipment, instrument and equipment short circuit and other faults possibly caused by the aqueous detergent are avoided; as the nanosilicon dioxide with different grain sizes is added in the preparation process of the detergent, a peeling effect between a coating brittle chip and the equipment is improved, so that the coating brittle chip is more easily subjected to brittle rupture and peeling from the surface of the equipment.

The invention discloses a preparation method of disinfect and sterile spray for preventing bouine mastitis. The preparation method comprises the following steps of: A, taking 70-90 parts by weight of radix sophorae flavescentis, adding 280-360 parts by weight of deionized water, decocting for 50-60 minutes, filtrating, and concentrating till the relative density is 1.03-1.05 at a temperature of 60 DEG C; B, adding 520-640 parts by weight of deionized water into a dissolving kettle, heating to 40-50 DEG C, then adding 7-8 parts by weight of chlorhexidine gluconate, 60-80 parts by weight of glycerin, 15-20 parts by weight of menthol, and 240-340 parts by weight of ethanol and evenly mixing; and C, mixing a concentrated solution in the step A and a mixed solution in the step B, and adding 1-2 parts by weight of food brilliant blue and evenly stirring; and canning, and sealing to obtain the disinfect and sterile spray after 260-360 parts by weight of dimethyl ether is charged. An application method of the disinfect and sterile spray comprises the following steps of: vertically and directionally spraying the disinfect and sterile spray on the places which are 1cm far away from nipples below the nipples after milking each time, and covering liquid medicine on the nipples.

The invention relates to a liquid chemical blending device, in particular to a three-compound combination flooding scale-prevention water and chemical adding device for a wellhead. The device comprises a chemical storage box, a blender and a water source delivery pipe used for being connected with a tap water source. The blender is provided with an inlet and an outlet. The lower end of the chemical storage box is connected with the inlet of the blender through a liquid chemical delivery pipe. The liquid chemical delivery pipe is connected with a first switching valve, a first flow regulating valve and a charge pump. The outlet end of the water source delivery pipe is connected with the inlet of the blender. The water source delivery pipe is connected with a second switching valve, a second flow regulating valve and a water pump. The outlet of the blender is connected with a pressure gauge, a discharge pipe and a safety valve in parallel. The outlet end of the safety valve is connected with the chemical storage box. The discharge pipe is connected with a discharge valve and a check valve. According to the device, the problem that in the prior art, the concentration of prepared liquid chemical is unstable is solved, and the adding ratio of the liquid chemical to water and the adding speed can be well controlled.

The invention belongs to the technical field of heat energy, and particularly relates to a super-cooled water preparation device for exchanging heat between gas and liquid. The super-cooled water preparation device comprises a container, a liquid distributor and a liquid trap which are positioned in the container, and an air inlet and an air outlet which are formed on the container, wherein a super-cooled liquid membrane forming part capable of heating is arranged in the container and is arranged between the liquid distributor and the liquid trap and between the air inlet and the air outlet; an included angle is formed between the super-cooled liquid membrane forming part and a liquid flow direction as well as between the super-cooled liquid membrane forming part and a gas flow direction; the surface of the super-cooled liquid membrane forming part is provided with a poor heat conducting layer; and when the super-cooled liquid membrane forming part heats, heat is slowly released to the surface of the poor heat conducting layer, and the liquid membrane temperature is controlled to be more than or equal to a liquid freezing point. Heat transferring mediums can be directly contacted, the heat exchange efficiency is high, the size is small, the manufacturing cost is low, and impurities can be removed from the gas heat transferring medium.

A nitrogen gas delivery device belongs to the transferring technical field for protecting the gas by the nitrogen gas, which is composed of a liquid nitrogen tank, an evaporator and a pipe. One end of the pipe is connected with the liquid nitrogen tank, the other end of which is connected with the evaporator. The middle part of the pipe has a bent pipe input into the heat exchange groove, which is provided with a hot water inlet pipe for heat exchange, and the heat exchange groove is provided with a cooling water circulation mechanism. The device has the advantages that, due to the heat exchange inducted into the evaporator through the heat exchange groove of the bent pipe of the middle part, the evaporating effect of the evaporator can be increased, compared with the existing art 15-20% liquid nitrogen can be saved; on freezing occurs on the whole pipe, so on man is needed to deice; the cooled water through the bent pipe heat exchange is returned to the sintering kiln for circulating cooling, which is favorable for the cooling effect of the sintering kiln.

The invention provides a crankcase ventilation pipeline heating joint. The crankcase ventilation pipeline heating joint comprises shells, a heat conduction metal pipe and a PTC heating mechanism. Joint pipelines are formed in the shells; the heat conduction metal pipe is formed on the inner wall of one of the joint pipelines; the PTC heating mechanism makes contact with the heat conduction metal pipe; and the heat conduction metal pipe is heated at the constant temperature through the PTC heating mechanism. According to the crankcase ventilation pipeline heating joint, by innovatively arranging the heating mechanism at the crankcase ventilation pipeline joint and introducing the PTC heating mechanism, the effect that the crankcase ventilation pipeline joint is prevented from being frozen at the low air temperature is guaranteed, therefore, the problem of engine failure caused by oil seal bulging when the crankcase ventilation pipeline joint is frozen and blocked is effectively prevented, the environment adaptability of an engine is improved, and the service life of the engine is prolonged.

The invention discloses a low-temperature pump tank for an LNG (liquefied natural gas) vehicle fueling station. The low-temperature pump tank comprises a pump tank body, wherein a blind flange is sealed on an upper opening of the pump tank body; a drain pipe is arranged in the middle of the blind flange; and the length of the end part of the drain pipe extending inside the pump tank body is 1 / 5 to 1 / 3 of height of the pump tank body. By adopting the low-temperature pump tank, the drain pipe extends inside the low-temperature pump tank, so that the blind flange of the pump tank does not generate the frosting phenomenon when the low-temperature liquid is pumped out through a low-temperature pump.

The invention discloses a track derusting and ice crushing device for railway construction. The track derusting and ice crushing device comprises a diesel generator, a derusting and anti-freezing boxbody, a water pump, a first motor, a first driving pulley, an ice melting device, a fixing seat, a second motor, a second driving pulley, a guide plate, a second belt, an ice crushing knife assembly,a second driven pulley, a transmission shaft, an ice scraping device, a first belt, a derusting device, a sprinkler head and a first driven pulley. The track derusting and ice crushing device is reasonable and simple in structure; the diesel generator is arranged so that electric energy can be provided for the track derusting and ice crushing device and trouble and inconvenience caused by the external wire drawing can be avoided; the second motor is arranged so that the second belt can drive the ice crushing knife assembly to rotate clockwise, and rotation of the ice crushing knife assembly enables an internal ice crushing knife, a concave ice crushing knife and an external ice crushing knife to conduct ice crushing and removing on the inner and outer sides and the top face of a track; andmeanwhile, the guide plate is used in cooperation so that most removed ice can fly out of the track along the guide plate, and loads for follow-up treatment can be reduced.

The invention relates to the field of defrosting and draining, in particular to a drainer and a refrigerator. The drainer comprises a water pan, a drain pipe connected to the drain outlet of the waterpan and a gas-liquid circular heating assembly, wherein a cooling surface is arranged at the upper end of the gas-liquid circular heating assembly, the cooling surface is in contact with the bottom surface of the water pan, and an evaporating surface is arranged at the lower and is in contact with a heat-dissipating element; and a steam ascending pipeline and a liquid descending pipeline communicating to each other are arranged in the gas-liquid circular heating assembly. A heat exchange working medium is in contact with the heat-dissipating element in the gas-liquid circular heating assemblyto be heated, enters the upper end of the gas-liquid circular heating assembly through the steam ascending pipeline, and exchanges heat with a substance in the water pan through the cooling surface,so that the bottom of the water pan is not frozen, and evaporated water is discharged along a drain pipe. The drainer is applied to the refrigerator. By taking a cabin of a compressor as the heat-dissipating element, evaporated water inside is discharged smoothly by means of heat generated by the product skillfully, so that freezing is avoided, and the consumption reducing effect is also achieved.

The invention relates to the technical field of household appliances, in particular to a refrigeration device and a water dispenser. The refrigeration device comprises an evaporator, an anti-freezinglayer and a medium storage box for storing a medium (such as drinking water), wherein the evaporator is arranged on the outer wall face of the medium storage box, the anti-freezing layer is arranged at the position, corresponding to the evaporator, of the inner wall face of the medium storage box, or the evaporator is arranged in the medium storage box, and the anti-freezing layer is arranged on the outer surface of the evaporator. When low evaporation temperature of the evaporator is selected, the temperature of the drinking water located in the medium storage box and around the evaporator can be quickly reduced; due to the fact that the anti-freezing layer is arranged at the position, corresponding to the evaporator, in the medium storage box, it can be guaranteed that no freezing phenomenon occurs when the refrigeration device obtains the low-temperature drinking water, and the good refrigeration effect of the refrigeration device is guaranteed.

The invention relates to an efficient casing pipe type air heater device. The device is provided with a steam header (7) on the upper portion of one end in an outer frame (9); one end of the steam header (7) is connected with a steam inflow pipe (5); the other end of the steam header (7) is connected with an inner pipe (1); the exterior of the inner pipe (1) is sleeved with an outer pipe (2); oneend of the outer pipe (2) is closed by an outer pipe plug (3); fins (4) are wound on the outer wall of the outer pipe (2) to form a fin pipe: the lower portion of one end in the outer frame (9) is provided with a hydrophobic header (8); one end of the hydrophobic header (8) is connected with a hydrophobic pipe (6); and the other end of the hydrophobic header (8) is connected with an outer pipe (2). A coaxial type structure is adopted for the device, and fluid enters from the inner pope, returns through a folding back chamber, and returns through a sandwich layer channel between the outer pipeand the inner pipe. The temperature distribution of the outer wall of a whole casing pipe tends to be uniform in the pipe length direction, and the phenomena of hot expanding leakage, bend brushing leakage and outlet hydrophobic icing and the like can be well avoided. The efficient casing pipe type air heater device has the beneficial effects of being compact in structure, easy to machine, low incost, long in service life and the like.

The invention discloses a closed-circuit circulation drying system based on two-stage solution dehumidification, including a drying medium circulation subsystem, a first-stage solution dehumidification-regeneration circulation subsystem, a second-stage solution dehumidification-regeneration circulation subsystem, and a first heat pump cycle subsystem and the second heat pump cycle subsystem. The invention adopts two-stage solution dehumidification technology to dehumidify the drying medium, which solves the problems of easy freezing of the heat exchanger and high energy consumption in the traditional cooling and dehumidification process; the vacuum technology is used to regenerate the hygroscopic solution, which reduces the energy consumption of solution regeneration At the same time, the compression technology is used to recycle the generated secondary steam, which solves the problem that the latent heat of water vapor is not used in the traditional cooling and dehumidification process; the mechanical heat pump technology is used to adjust the temperature of solution dehumidification and regeneration, and the energy utilization rate of the system is improved.

The invention discloses a forklift truck cab which comprises a driving cabin arranged at the upper end of a frame and a cab body fixedly connected to the upper end of the driving cabin. A step is fixedly connected to one end of the driving cabin, and the end, close to the step, of the frame is connected with a driving wheel protection cover. The step comprises a first step plate and a second step plate, the second step plate is fixedly connected with the driving cabin, the first step plate is located below the second step plate, and the projection of the second step plate in the plane of the first step plate locally coincides with the second step plate. By means of the forklift truck cab, due to the fact that the two-stage step structure is arranged, the span of each stage of step body in the height direction is reduced, and therefore the foot lifting height obtained each time a driver enters the forklift truck cab is reduced, the difficulty for entering the cab of the driver is lowered, and meanwhile safety of the driver is also ensured.

The invention discloses a preparation method of a solvent-based brittle self-peeling radioactive detergent. The preparation method comprises the following steps: adopting methacrylic acid as a soft monomer in a free radical polymerization product, methyl methacrylate as a hard monometer in the free radical polymerization product and acrylamide as a functional monomer in the free radical polymerization product; adding nanosilicon dioxide with different grain sizes and a functional additive in the preparation process of the detergent. The detergent obtained by the preparation method can be used in an environment of below 0 DEG C and cannot generate an icing phenomenon; meanwhile, when the decontamination is performed on the surfaces of a precision instrument and equipment, instrument and equipment short circuit and other faults possibly caused by the aqueous detergent are avoided; as the nanosilicon dioxide with different grain sizes is added in the preparation process of the detergent, a peeling effect between a coating brittle chip and the equipment is improved, so that the coating brittle chip is more easily subjected to brittle rupture and peeling from the surface of the equipment.

The invention discloses a water meter anti-freezing device which comprises a water meter box, a plurality of water meters are installed in the water meter box, the two ends of each water meter communicate with connecting pipes, a first protection frame is fixedly connected to the inner wall of the rear side of each water meter, and the part, located in the water meter box, of the upper end of each connecting pipe communicates with a communicating block, a rotating shaft is rotationally arranged at the upper end of the communicating block in a sealed and penetrating mode, the lower end of the rotating shaft extends to the position close to the interior of the connecting pipe and is fixedly connected with a first bevel gear in a sleeving mode, rotating cylinders are rotationally connected to the positions, on the left and right positions of the communicating block, of the inner wall of the connecting pipe, and four spoilers are evenly and fixedly connected to the inner walls of the rotating cylinders in the circumferential direction, annular bevel gears are fixedly connected to the opposite sides of the two rotating cylinders located in the same connecting pipe. The anti-freezing device has the advantages that when the temperature is lower than zero DEG C, water in the connecting pipe can be kept in a moving state, the anti-freezing effect is achieved, and compared with an existing anti-freezing method, the anti-freezing device is more practical and effective.

The invention provides a beverage cooling device and a cooling method. The cooling device is installed on refrigeration equipment, the cooling device comprises an inner part and an outer part, the inner part is located in the refrigeration equipment, the outer part is located outside the refrigeration equipment, and the inner part is connected to the outer part through a pipeline pre-buried in thedoor body of the refrigeration equipment; and the outer part is used for containing the beverage with an outside package, a liquid refrigerating fluid is arranged in the inner part, the pre-buried pipeline is used for communicating the inner part and the outer part, so that the refrigerating fluid is also contained in the outer part, and the beverage is cooled. According to the device and the method, the cooling structure is simple, the beverage can be cooled conveniently and quickly by adopting the cooling method based on the device, so that the beverage can be rapidly cooled.

The invention relates to an anti-frost heaving system for a vertical shaft in a cold region and a construction method of the anti-frost heaving system. The anti-frost heaving system comprises the vertical shaft arranged in surrounding rock and a separating wall. The separating wall is arranged in a surrounding mode along the outer part of the outer wall of the vertical shaft in the annular direction. A plurality of liquid injection holes which are dispersed at intervals are formed between the separating wall and the vertical shaft, and cement paste layers are arranged at the bottoms of the liquid injection holes; solvents are injected into the liquid injection holes and are used for reducing the freezing point of water; the solvents diffuse outwards in the liquid injection holes to fill the area between the separating wall and the outer wall of the vertical shaft, a continuous solvent curtain is formed, and the two sides of the solvent curtain make contact with the separating wall and the outer wall of the vertical shaft correspondingly; and the separating wall is used for preventing water diluting solvents in an external environment or further diffusion of the solvents. The anti-frost heaving system is simple in structure, convenient to use, low in energy consumption and good in anti-frost heaving effect, can be used throughout the year after being built once, and has good economical efficiency and use value.

The invention discloses a hydrogen circulating pump for a fuel cell, and belongs to the technical field of fuel cells. The hydrogen circulating pump comprises a machine shell, a motor, a male rotor and a female rotor, wherein the motor, the male rotor and the female rotor are arranged in the machine shell; the male rotor is connected to the output end of the motor; a gear transmission structure is arranged between the male rotor and the female rotor; the female rotor and the male rotor each comprise a rotor base body, an anti-expansion coating and a hydrophobic coating; each anti-expansion coating is arranged on the outer surface of the corresponding rotor base body, and the expansion coefficients of the anti-expansion coatings are smaller than those of the rotor base bodies; and each hydrophobic coating is arranged outside the corresponding anti-expansion coating. The anti-expansion coating and the hydrophobic coating are sequentially arranged on each of the surface of the female rotor and the surface of the male rotor from inside to outside, so that the pump is effectively prevented from being stuck.

The invention relates to the field of ceramic valve elements, in particular to a ceramic valve element. The ceramic valve element comprises a sleeve and a valve element body, wherein the top of the sleeve is integrally connected with a horizontally-arranged top plate, the top of the top plate is connected with a fixing base, the top of the fixing base is integrally connected with a mounting sleeve, a rotating column is vertically and rotationally mounted at the top end of the mounting sleeve, the top of the rotating column is integrally connected with a handle mounting rod, and the bottom of the rotating column extends into the sleeve to be connected with the valve element body. The whole valve element has the advantages of being anti-blocking and anti-freezing, and being easy to disassemble and maintain, so that the whole valve element is long in service life and is seldom damaged, and meanwhile, the safety of follow-up water using instruments of a water valve can be guaranteed. The use adaptability is high, the use range is wide, the maintenance is simple and fast, and the use cost is low. The valve element cannot be frozen, then a valve handle is difficult to damage, thus the consumption of the handle can be reduced, the impurity removing and cleaning capacity is also realized, and therefore, the whole valve element can have relatively high safety and relatively long servicelife.

The invention relates to the technical field of new energy, in particular to a new energy ground source heat pump machine which comprises a shell, a lower box body and an upper box body; adjusting rods are installed at the bottom end of the shell, universal wheels are installed at the bottom ends of the adjusting rods, the lower box body is arranged on the bottom wall of the interior of the shell, a supporting block is arranged on the bottom wall of the interior of the lower box body, and a ground source pump unit main body is arranged at the upper end of the supporting block; and a mounting groove is formed in the upper end of the lower box body, a telescopic assembly is mounted in the mounting groove, the upper box body is arranged at the upper end of the telescopic assembly and arranged on the surface of the lower box body in a sleeving mode, a plurality of ventilation openings are formed in the outer walls of the two sides of the shell, and dustproof nets are arranged at the ventilation openings. According to the new energy ground source heat pump machine provided by the invention, the structure is simple, a ground source heat pipe and peripheral elements are effectively protected, the use quality is improved, and the problem that dust enters the shell is solved.

The invention discloses a water leakage detection system for a water pump connection port, which belongs to the field of water pumps. A water leakage detection system for a water pump connection port, a connection port installed on a water pump, a pair of detection and protection elements and a driving element; the detection and protection elements include a bracket, a moving block, a protection groove, a pair of sensors and a clamping mechanism; The bracket is fixedly installed on the water pump near the connection port, the moving block is slidably installed on the water pump, the moving block is located between the connection port and the bracket, the protection groove is opened in the moving block, and a pair of sensors are respectively installed on the upper and lower walls of the protection groove. By sealing and protecting the position of the connection port, and then fixing the external water pipe, when there is water leakage, the liquid level sensor is used to sense it. At the same time, the sealing protection space is limited, and the water leakage will not affect the pressure problem. Use the time when the upper and lower liquid level sensors are triggered after water leakage to judge the degree of water leakage.

The invention discloses a device of cold-storage water defrosting and deforesting water and foresting water reusing, which relates to the technical field of cold-storage defrosting. The supply pipe of tap water and a cut-off valve, the cut-off valve and a water-carrying pipe, the water-carrying pipe and a spray pipe, the spray pipe and a nozzle are all connected through screw threads; the enclosing case of an evaporator is fixedly and respectively connected with an evaporator fan, the spray pipe, an evaporator and a glass observing window through a fastener; the wind-returning passage of the enclosing case of the evaporator and a wind-returning door, the wind-feeding passage of the enclosing case of the evaporator and a wind-feeding door are all connected by a rotating shaft in a movable way; the bottom of the enclosing case of the evaporator is connected with a water-sealing drain pipe in a flange connection way; the periphery of the enclosing case of the evaporator is provided with a circulation water storing pool, and the water discharge end of the water-sealing drain pipe extends to the upper part of the circulation water storing pool. The device of the invention is applied tocold-storage defrosting with good effect, can reuse deforesting water and foresting water and the cold of frost layers, and saves water resource and electric energy.

The invention provides a fuel cell heat recovery system. The self-heating heat management system includes a fuel cell water circuit one, a passenger compartment water circulation circuit one, and a battery pack water cycle circuit one; the battery pack water cycle circuit one includes a battery cooler one and a battery pack water cycle Loop 1 is connected in parallel with water circulation loop 1 of the passenger compartment through battery cooler 1; the water circulation loop of the passenger compartment is connected in series with the fuel cell water loop; the external heating configuration thermal management system includes the second battery pack water circulation loop, the battery pack The water circulation loop 2 includes the battery cooler 2, the battery pack water circulation loop 2 is connected in parallel with the water circulation loop 2 of the passenger compartment through the battery cooler 2, and the water circulation loop 2 of the passenger compartment is connected in parallel with the water loop 2 of the fuel cell through the fuel cell 2. The invention can maximize the heat utilization of the cooling circuit by changing the circulation flow path, thereby reducing energy consumption and improving the overall energy utilization efficiency of the automobile.

The invention discloses a helium microcirculation refrigeration Dewar system for superconducting magnets, which belongs to the technical field of cooling devices for superconducting magnets, and comprises: a Dewar with a concave heat conduction cavity on the outer surface of the Dewar; a coupling head , the coupling head extends into the heat conduction chamber, and one end of the coupling head is connected to the inner bottom wall of the heat conduction chamber; the superconducting coil is arranged in the Dewar; the helium microcirculation circuit is arranged in the Dewar, and the helium microcirculation circuit includes the condensation chamber and A plurality of heat exchange pipes, the condensation chamber is connected with the outer bottom wall of the heat conduction chamber, one end of the heat exchange pipe is connected with the condensation chamber, the other end of the heat exchange pipe is closed and connected with the superconducting coil, the heat exchange pipe and the condensation chamber are filled with Helium: the heat conduction chamber of the present invention is only connected to the atmosphere, not to the interior of the Dewar, so that a helium-enclosed operating volume space can be better constructed, and the helium is no longer subject to the diffusion and thermal shock of the atmosphere, and no freezing will occur phenomenon, ensuring heat transfer efficiency and avoiding failure of superconducting magnets.

The invention discloses a temperature control system for preventing cooling and freezing of a fermenter, comprising: a control panel, which is used for human-computer interaction, controls the control module through the control panel, and then controls other components. The beneficial effects of the present invention are: the control module sends instructions to the refrigeration relay and the compressor to stop running for 90 minutes, and then automatically start for 60 minutes, and then according to this time, "stop-run-stop-run..." is continuously cycled , until the temperature reaches 2 to 3 degrees Celsius. In this process, the temperature of the part of the fermentation liquid near the tank wall will drop after running for 60 minutes. , after 90 minutes of equilibrium, the temperature of the fermented liquid in the center of the tank is basically the same as that of the fermented liquid on the wall of the tank, and then the refrigerator is turned on to pull the temperature, and there will be no local overcooling, so the fermented liquid will not freeze .