1771 results about "Heating efficiency" patented technology

The utility model provides a peak-shaving steam supply system for deep waste heat utilization of a thermoelectric unit, which deeply recovers cold end waste heat and flue gas waste heat of a cogeneration unit, is coupled with a two-stage compression heat pump, extracts waste heat to heat demineralized water, and serves as a primary heat source for supplying industrial steam, so that the waste heat participates in external heat supply; the superheater utilizes the generating capacity of the unit to enable industrial steam to reach steam supply parameters, the waste heat of the unit and the generating capacity are combined for external steam supply, the circulating heat efficiency is improved, the steam supply capacity is improved, meanwhile, the on-grid electricity is reduced, thermoelectric decoupling is achieved, the unit adjusting operation interval is expanded, the operation cost and pollutant emission are reduced, and peak regulation or spot transaction earnings are improved. And a clean, low-carbon, flexible, efficient, economical and energy-saving combined heat and power generation system is constructed.

The embodiment of the invention discloses a heating method of parallel battery packs, electronic equipment and an energy storage system. The method comprises the steps of detecting a connection state of an external power supply and a parallel battery pack; when it is detected that the external power supply is connected, whether all slave battery packs in the parallel battery packs have heating requirements or not is judged; a plurality of heating gears are preset from the battery pack, each heating gear corresponds to one heating power, and the heating gears are sequenced according to the heating power; according to a preset priority, a heating instruction is sent to the to-be-heated battery pack, so that the to-be-heated battery pack is heated; switching a heating gear of the to-be-heated battery pack based on the relationship between the feedback data of the to-be-heated battery pack and the input energy of the external power supply; after adjustment of the heating gear is completed, heating is conducted for preset time; and after heating is completed, the steps are circulated. According to the embodiment, the slave battery pack is controlled through the main battery pack, the heating gear is dynamically adjusted, and the heating efficiency and the energy utilization rate of the battery pack can be improved.

The invention relates to the technical field of powder bed heating, and discloses a powder bed heating method of additive manufacturing equipment, the powder bed heating method of the additive manufacturing equipment is realized based on a powder bed heating unit of the additive manufacturing equipment, and the powder bed heating unit of the additive manufacturing equipment comprises a handle bottom plate for providing a basic mounting platform for the whole device; a push-pull type local heating design is adopted for the device, a traditional overall preheating mode is replaced, energy consumption and the equipment use cost are greatly reduced, meanwhile, heat loss is reduced, the heating efficiency is improved, and through cooperation of double positioning and a real-time temperature control system, the energy-saving and environment-friendly effects are achieved. The accurate position of the heating unit is guaranteed through mechanical limiting and sensor detection, high-precision temperature control adjustment is matched, it is guaranteed that the temperature of the powder bed is stabilized within the preset range, part defects caused by temperature fluctuation are avoided, and the forming quality and the mechanical property stability of workpieces are remarkably improved.

The invention relates to the field of cracking, and discloses a direct electric heating cracking furnace, application and a method for preparing olefin through cracking, the cracking furnace comprises a preheating section, a cracking section and a post-treatment section, and the cracking section adopts a metal furnace tube with resistance gradually reduced in the material flowing direction; the metal furnace tube is directly connected with the electric heating component; the preheating section is used for preheating cracking raw materials and diluting steam; the cracking section is used for cracking the preheated cracking raw material in the presence of the preheated steam; and the post-treatment section is used for cooling and separating the cracking product. According to the direct electric heating cracking furnace disclosed by the invention, heat is directly generated from the heated metal furnace tube instead of being transmitted from the outside through heat radiation, so that the thermal efficiency is high, the heat loss is small, the heating speed is high, the cracking preparation of low-carbon olefin is facilitated, and each product has relatively high yield.

The utility model relates to the technical field of metallurgical electric furnaces, in particular to an induction coil for a medium-frequency electric furnace, which comprises an induction heating coil, an upper cooling coil positioned above the induction heating coil and a lower cooling coil positioned below the induction heating coil, the upper cooling coil, the induction heating coil and the lower cooling coil are all formed by winding hollow pipe bodies in the same spiral direction, the cross section of the induction heating coil is in a D shape, and the induction heating coil comprises an inner pipe wall, an outer pipe wall and two connecting walls connected between the inner pipe wall and the outer pipe wall. The cross section of the induction heating coil is designed to be D-shaped, the inner pipe wall located on the inner side of the induction heating coil is arranged to be arc-shaped, and the outer pipe wall located on the outer side of the induction heating coil extends in the vertical direction, so that current and magnetic field distribution is optimized, and magnetic field energy acts on the surface of a workpiece on the inner side of the induction heating coil more intensively; energy loss is reduced, the heating speed of workpieces is increased, and the heating efficiency of the medium-frequency electric furnace is improved.

The utility model discloses an air comb head which comprises an air barrel, an air inlet channel, an air outlet channel and an air outlet channel. The air guide structure is arranged on the air duct and is provided with an air inlet and an air outlet; the comb tooth structure is connected to the air guide structure and provided with a plurality of tooth-shaped shells; the multiple inner teeth are located in the tooth-shaped shell; a ventilation flow channel is defined by the side wall, located between the first surface and the second surface, of the inner tooth and the inner wall of the tooth-shaped shell. The ventilation flow channel is divided into a first flow channel and a second flow channel which are communicated with each other; the inner teeth are further provided with drainage channels communicating with the first flow channels and the second flow channels. According to the technical scheme, airflow in the first flow channel is partially distributed to the drainage channel and converged with airflow in the second flow channel, heat is generated, and the heating efficiency of the air comb is improved.

The invention discloses a floor heating structure with a phase change material layer and a preparation method of the floor heating structure, and belongs to a floor heating structure, the floor heating structure comprises a base material layer, the phase change material layer, an auxiliary heat conduction layer and a floor surface layer from bottom to top in sequence; a metal heat-conducting net is embedded into the lower part of the base material layer; the phase change material layer comprises the following components in percentage by weight: 53%-58% of methyl laurate, 30%-35% of n-decanol, 5%-8% of nano aluminum oxide, 4%-6% of polyvinyl alcohol and 0.5%-1.5% of carboxymethyl cellulose. Solid-liquid phase change is carried out through the phase change material layer, redundant heat is absorbed, latent heat is released when a heat source is shut down, and therefore frequent starting and stopping of the heat source are reduced, and energy consumption is reduced. According to the multi-layer heat conduction design, through collaborative optimization of the metal heat conduction net and the auxiliary heat conduction layer, the heat efficiency of the floor heating structure is further improved, the heat response time is shortened, the latent heat characteristic of the phase change material is utilized, the heat buffering effect can be achieved in the floor, the heating temperature fluctuation range is reduced, and the heating comfort is improved.

The invention discloses an integrally-welded three-medium heat exchanger which comprises a heat exchange core, collecting pipes, flat pipes and fins are arranged on the heat exchange core, the flat pipes are longitudinally arranged, the fins are arranged on at least one side of each flat pipe, and all the fins are tightly attached to the flat pipes; the collecting pipe is provided with a connecting pipe or a filler flange which is communicated with an external medium inlet / outlet; a plate bundle unit is arranged on the outer side of the heat exchange core, and the plate bundle unit is formed by sequentially overlapping a plurality of heat exchange plates and fins and sealing the heat exchange plates and the fins through all-welding of the peripheral edges; a first flow channel and a second flow channel are formed in the plate bundle unit, and the first flow channel and the second flow channel are not completely isolated from each other. According to the integrally-welded three-medium heat exchanger, the influence on the refrigerant side in a whole vehicle integrated system can be reduced, and the leakage risk is greatly reduced; meanwhile, the structure is compact, sealing performance is excellent, and heat efficiency is high.

The utility model discloses a heating body, an atomizer and an aerosol generating device. The base body comprises a porous structure and a loading structure, the porous structure is provided with a plurality of micropores, the loading structure comprises a connecting surface and a heating surface, the connecting surface is used for being connected with the porous structure, and the heating surface is used for being in contact with an aerosol generating substrate. The heating element is arranged on the connecting surface or the heating surface and is used for heating the aerosol generating substrate to generate aerosol. In the application, the porous structure is provided with a plurality of micropores, so that the porous structure is relatively low in heat conductivity and has a relatively good heat insulation effect; wherein the heating element is arranged on the connecting surface or the heating surface, so that heat generated by the heating element is blocked by the porous structure and is difficult to dissipate to the outside, heat dissipation is reduced, and the heat generated by the heating element can act on the aerosol generating substrate more, so that the heat efficiency of the heating element can be improved, and the energy consumption of the aerosol generating device can be reduced; and the endurance time of the aerosol generating device is prolonged.

The utility model relates to a cold and heat recovery system for a constant-temperature room. A conventional air heat exchanger is independently installed in an existing drying room, plate type cross heat exchange is adopted in the heat exchanger, the heat exchange efficiency is low, and air exchange in the room is uneven. The device comprises a drying room and a cooling and heating main machine, an air outlet of the drying room is connected with an air inlet of the cooling and heating main machine through an air return pipe, and an air outlet of the cooling and heating main machine is connected with an air inlet of the drying room through an air supply pipe. An air outlet and a fresh air inlet of the translation type cold and heat recoverer are both formed in the side portion of the air return pipe, the air outlet is closer to an air outlet of the drying room, and an air exhaust fan is arranged at the air outlet of the translation type cold and heat recoverer. According to the utility model, the heating efficiency of a main machine can be improved by simply modifying a conventional drying room structure, and heat can be recovered and efficiently recycled.

The utility model relates to a heating device and a new energy automobile. The heating device comprises a shell and a heating device, wherein a containing cavity is defined by the shell; the shell is provided with a containing cavity, the heating unit is arranged in the containing cavity, the heating unit comprises a ceramic substrate and a heating piece, the ceramic substrate and the shell define a circulation cavity and an installation cavity which are independently arranged, and the heating piece is arranged on the ceramic substrate and located in the installation cavity; and the heating piece is used for heating the liquid passing through the circulating cavity. The ceramic substrate is an insulator, so that the heating element can be directly arranged on the ceramic substrate, and an insulating layer is omitted. In this way, heat generated by the heating piece is directly conducted to the liquid in the circulation cavity through the ceramic substrate, the heat loss is small due to the fact that the transmission path of the heat is short, the heat absorption effect of the insulating layer can be eliminated, the heat loss is further reduced, and finally the heating efficiency of the heating device is improved.

This invention provides a portable hot melt adhesive rapid heating device, including a preliminary preheating mechanism, a segmented melting mechanism, a dispensing nozzle, and a leak-proof vacuum mechanism. The leak-proof vacuum mechanism is installed on the circumferential surface of the preliminary preheating mechanism, and the segmented melting mechanism is installed on its front end face. The dispensing nozzle is also installed on the front end face of the segmented melting mechanism. This design solves the problems of dripping hot melt adhesive after use, which is inconvenient and requires external heating, resulting in low heating efficiency. This invention has a reasonable structure; through the cooperation of the segmented melting mechanism and the leak-proof vacuum mechanism, it can simultaneously heat and melt the inside and outside of the adhesive stick, effectively improving the heating efficiency and preventing leakage from the dispensing nozzle after dispensing, thus improving the cleanliness of the usage environment.

The invention relates to the technical field of photovoltaic material production equipment, and discloses a same-side online heater of a polycrystalline silicon ingot furnace, which comprises an ingot furnace body, and is characterized in that the front side of the ingot furnace body is fixedly connected with a mounting frame, and the inner side of the mounting frame is fixedly connected with a heating element fixing frame; a plurality of heating pipes are arranged on the inner side of the heating element fixing frame at equal intervals, connecting conductive columns are fixedly connected to the left side and the right side of the inner wall of the heating element fixing frame, and a flow guide mechanism is arranged on the outer side of the mounting frame and used for improving the heating efficiency of polycrystalline silicon in the ingot furnace body. The preheating gas conveying pipe utilizes heat gathered in the heat insulation layer to conduct preheating, the temperature difference between the preheating gas conveying pipe and a silicon material is reduced, the silicon material is evenly covered with protective gas through the dispersing device, the heat is more evenly distributed in the ingot furnace, more regular crystal structures with fewer defects can be easily formed, the ingot casting quality is improved, the energy consumption of the heating pipe is reduced, and the production cost is reduced.

The utility model discloses a thick film heating washing pump, which can realize double-sided heating, greatly improve the heating efficiency and reduce the energy consumption. A thick film heating washing pump comprises a motor part, a pump body part and a heating part. The motor part is used for providing power for driving the liquid. The pump body part is connected with the motor part. The pump body part comprises a pump shell and an impeller. A pump cavity is formed in the pump shell. The impeller is arranged at the output end of the motor part. The impeller is located in the pump shell. The impeller is used for driving liquid in the pump shell to rotate. And the heating part is arranged on the motor part. The heating part comprises a heating piece and a drainage piece. The drainage piece is arranged in the pump shell and located in the inner ring of the heating piece. The drainage piece is used for guiding liquid in the pump shell to pass through the two sides of the heating piece. Liquid entering the pump shell is driven by the impeller to be close to the inner wall of the pump shell in a centrifugal mode, the liquid enters the two sides of the heating piece to be heated at the same time under the action of the drainage piece, and heat energy on the two sides of the heating piece is used for heating the liquid through cooperation of the drainage piece and the impeller.

The utility model discloses an aerosol generating device, comprising: a chamber defining a chamber for accommodating an aerosol generating product, the chamber having a first open end and a second open end oppositely arranged along its length direction, the first open end being used for providing an inlet for the aerosol generating product to enter the chamber; the light source is used for generating heat radiation; the cell is used for providing electric energy for the light source; the light transmitting piece covers the light source; the light source is provided with a first position and a second position relative to the cavity, and when the light source is located at the first position, the light source and the second opening end are staggered; and when the light source is located at the second position, the light source is opposite to the second opening end of the cavity, so that the light source transmits heat radiation into the cavity through the second opening end to heat the aerosol generating product to generate aerosol. In this way, residues or condensate falling onto the light-transmitting part can be effectively reduced, and the situation that the heating efficiency of the light source is reduced due to the fact that heat radiation generated by the light source is shielded is relieved.

The utility model relates to a wall corner line device capable of dissipating heat and an inner wall decoration system. The wall corner line device comprises a base unit, a first installation unit, an air conditioning unit, a gas conveying unit, a ventilation unit and a waterproof unit. The base unit is arranged at the bottom of the structural wall body; the first installation unit is arranged on the outer side of the top of the base unit and connected with the decoration structure in an engaged mode. The air conditioning unit is arranged below the ceiling; the gas conveying unit is arranged on the top of the base unit and communicates with the base unit and the air conditioning unit. The ventilation unit is arranged on the outer side of the base unit and detachably connected with the base unit. The waterproof unit is arranged on the outer side of the ventilation unit and detachably connected with the base unit. The decorative structure has the advantages that the ventilation unit is arranged at the bottom of the decorative structure, so that high-temperature air in the air conditioning unit enters a room from a low position through the air conveying unit, and the problems of low heating efficiency and the like of a hot air outlet formed in a ceiling are solved.

This invention provides a fluid heater and a cleaning device, the cleaning device including the fluid heater. The fluid heater includes: a housing defining a fluid channel through which fluid flows and including a first pipe connector and a second pipe connector for connection to a fluid pipeline; a heating unit disposed within the fluid channel; and a heat-conducting unit disposed within the fluid channel adjacent to the heating unit to transfer heat generated by the heating unit to the fluid within the fluid channel. The above-described fluid heater has high heating efficiency.

The application discloses a heating assembly, a heating device and a battery cell hot-pressing equipment. The heating assembly comprises two coil assemblies, each coil assembly comprising a magnetic conducting member and a plurality of coils, the magnetic conducting member having three connection ends arranged in sequence, the connection ends being connected in a straight line, and each connection end being provided with a coil, and adjacent coils being adapted to pass through currents with a phase difference of 120 degrees. The two coil assemblies are arranged at intervals, a heating space is formed between the two coil assemblies, the connection ends of the magnetic conducting members of the two coil assemblies correspond to each other, the coils sleeved on the two corresponding connection ends are adapted to pass through currents with the same phase and can form a closed and linearly moving magnetic circuit. By corresponding the connection ends of the two magnetic conducting members and passing three-phase alternating currents through the coils on the three connection ends of the same magnetic conducting member, the closed magnetic circuit is linearly moved, so that the heating of the battery cell is uniform, the heating time of the battery cell is reduced, and the heating efficiency of the battery cell is improved.

The invention provides a process method for producing ferrotitanium powder by reducing ilmenite, which comprises the following steps of: uniformly mixing ilmenite concentrate with a biomass-coal mixed reducing agent, a nanoscale additive and the like, reducing in a rotary kiln under a temperature-controlled and oxygen-controlled atmosphere, quenching and cooling a product by water, and performing multi-stage ore grinding magnetic separation to obtain metal iron particles and a titanium-rich material; and preparing the two into a ferrotitanium powder product. The process integrates innovative units of raw material homogenization pretreatment, biomass-coal mixed reducing agent dynamic proportioning, LIBS + Raman spectrum on-line monitoring closed-loop control, nano CaO-Na2O composite catalyst buffer addition, finished product multistage magnetic separation reforming and the like. The product composition fluctuation is obviously reduced, the TiO2 content fluctuation is controlled within + / -0.4%, the FeO content fluctuation is controlled within + / -0.5%, the metallization ratio is improved to 90% or above, the heat efficiency is improved by about 20%, and the energy consumption per unit yield is reduced by about 15%. The ilmenite is directly, efficiently and cleanly utilized, a high-quality titanium-rich raw material can be provided for production of titanium dioxide, titanium sponge and the like, meanwhile, the byproduct high-grade iron powder is used for steelmaking, and the comprehensive utilization benefit of resources is remarkable.

The application discloses a TPMS structure micro-channel heat exchanger and a manufacturing method, and belongs to the field of structural design and manufacturing of rocket engine heat exchangers. The heat exchanger core is a plurality of spiral flow channel structures adopting TPMS. The inlet side of a liquid oxygen inlet and outlet collector is connected with the inlet of the core spiral flow channel through a liquid oxygen partition plate, and the outlet side of the liquid oxygen inlet and outlet collector is connected with the outlet of the core spiral flow channel. A fuel gas inlet pipeline is connected with the inlet of the core spiral flow channel through a fuel gas partition plate, and a fuel gas outlet pipeline is connected with the outlet of the core spiral flow channel. The liquid oxygen partition plate and the fuel gas partition plate are each provided with a plurality of through holes, the through holes correspond to the spiral flow channels in the core one by one, and each through hole is connected with the inlet of one spiral flow channel in the core. The application adopts the TPMS spiral flow channel structure to increase the internal heat exchange area of the heat exchanger and improve the heating efficiency of the heat exchanger on fuel in the working process of the engine.

The utility model discloses an electro-thermal conversion direct heating device for tobacco products. The heating device comprises a heater assembly, a neck part and a positioning seat, and one end of the tobacco product is inserted from an opening of the neck part, penetrates through a through hole formed by the heating assembly, extends into the positioning seat and abuts against a step in the positioning seat to form a ventilation bin; the other end of the tobacco product extends out of the opening to serve as a suction nozzle, and the tobacco product is clamped through the neck part and directly heated through the electric heating conversion element. The cut tobacco section is directly heated in a surrounding mode through the hollow channel of the electric heating conversion element, and the hollow cavity and the heat preservation cotton can form an air heat insulation bin, so that the electric heating conversion element is small in heat loss, high in temperature rising speed and high in heating efficiency, the cut tobacco section is accurately heated, and the heating area is large and uniform; the heating effect can be quickly achieved without too high heating temperature, so that the surfaces of the tobacco products cannot be burnt, the structure is flexibly changed and can adapt to different tobacco products, and the problem of mouth burning is effectively solved.

The utility model discloses electrothermal film radiation heating water storage heat supply equipment, which comprises a water storage tank, a first electrothermal film, a heat conduction part, a controller and temperature sensors, the heat conduction part is arranged at the bottom of the water storage tank, the first electrothermal film is fixedly connected with the heat conduction part, and the temperature sensors are arranged at different height positions in the water storage tank. The controller is connected with the first electric heating film and the temperature sensor, the temperature sensor collects temperature signals of different heights and transmits the temperature signals to the controller, the controller adaptively adjusts the heating power of the first electric heating film based on the temperature signals, and the water heating efficiency is improved through the heat conduction effect of the heat conduction component; the electric heating film and the heat conduction component are arranged at the bottom of the water storage tank, so that the heating area is greatly increased, the heating efficiency is improved, and the heating time is shortened.

The utility model relates to a cooking machine technical field, concretely discloses a sandwich machine. The sandwich machine, including the upper machine group and the lower machine group, all are provided with cooking assembly in the upper machine group and the lower machine group respectively, and the cooking assembly includes the heating body, the energy -conserving reflection board and the cooking surface, and the heating body is carbon fiber heating tube, through such structural design mode, carbon fiber heating body directly carries out the heating to the cooking surface, and through the energy -conserving reflection board mirror surface reflection of relative setting, the thermal energy of heating body is further reflected to the cooking surface, and the heating efficiency can be greatly improved through the heat radiation, the rapid heating can be realized, and the maximum degree heat energy utilization is realized. Meanwhile adopt detachable heating body, can be convenient to maintain after the heating tube damage or glass damage, save the maintenance cost and reduce the maintenance difficulty.

The utility model relates to a storage box technical field, concretely relates to a heating towel storage box, including and box body and lid, the lid covers on the box body forms first cavity, be provided with second cavity in the box body, be provided with heating body, fan and air flue in the second cavity, the air flue one end is connected with the fan, the air flue other end is linked together with first cavity. The utility model discloses through setting heating body, fan and air flue, realizes initiative hot air circulation, makes the towel fast drying and keeps warm, avoids damp breeding bacteria, saves airing space simultaneously. The design optimization of air flue and first cavity intercommunication improves hot air flow path, and the heating efficiency is promoted, and the even heating of towel is ensured.

The objective is to provide a fluid heating device that can improve the heating efficiency of the fluid. [Solution] The fluid heating device according to the embodiment comprises: a pair of holding parts provided opposite to each other; heaters provided on each of the opposing sides of the pair of holding parts; and a fluid supply part that supplies fluid to the space between the opposing heaters. Each of the pair of holding parts is inclined in a direction that brings the pair of holding parts closer together as it moves away from the end on which the fluid is supplied.

This application relates to the field of hot mist spraying equipment and discloses a hot mist machine, including a barrel. A first heating chamber and a second heating chamber are formed inside the barrel. A partition is fixedly installed inside the barrel to separate the first and second heating chambers. A filter screen is fixedly installed at the bottom of the partition, and the bottom of the filter screen is fixedly connected to the bottom inner wall of the first heating chamber. Two vertical cavities are formed inside the barrel, with both the first and second heating chambers located between them. Multiple evenly spaced first heating tubes are fixedly installed in each of the two vertical cavities. This application has the following advantages and effects: it is easy to carry, improving ease of use; it has high heating efficiency, allowing direct heating of the active pharmaceutical ingredient without the use of solvents to cause it to volatilize and form a uniformly concentrated smoke-like spray, greatly saving resources, reducing environmental pollution, eliminating the need for preparation steps, saving time and labor, and improving operational efficiency.

The invention relates to the technical field of nuclear facility pipeline heating. The invention provides a pipeline heating device and an in-reactor test facility. The pipeline heating device comprises a magnetic conduction layer, a heat conduction layer, a heat preservation layer and an electromagnetic induction coil, the magnetic conduction layer is made of a magnetic alloy material, and the magnetic conduction layer is enclosed and internally forms a heating area used for containing a pipeline; the heat conduction layer is located on the side, facing the heating area, of the magnetic conduction layer and used for transmitting heat of the magnetic conduction layer to the pipeline. The heat preservation layer wraps the side, away from the heating area, of the magnetic conduction layer. The electromagnetic induction coil is wound around the side, away from the heating area, of the heat preservation layer. The magnetic conductive layer made of the magnetic alloy material serves as a main absorption and conversion carrier of magnetic field energy, the eddy current effect can be remarkably enhanced, the problem that the heating efficiency is insufficient due to low magnetic conductivity of the austenitic stainless steel pipeline is solved, and the heating efficiency is greatly improved. The arrangement of the magnetic conductive layer can fundamentally avoid material microscopic damage caused by direct action of a magnetic field, and the safety is higher.

The utility model provides a defrosting device for cold chain transportation, and relates to the technical field of defrosting devices. A containing frame used for containing articles is placed in the compartment, two guide rods are fixed in the compartment, a seat body is arranged on the two guide rods in a sliding mode, a liquid spraying pipe is fixed to the seat body, a motor is fixed to the right end face of the inner wall of the compartment, and a first threaded rod is fixed to an output shaft of the motor. The first threaded rod is in threaded connection with the seat body. A motor drives a first threaded rod to rotate, the position of a liquid spraying pipe can be flexibly adjusted, and the liquid spraying defrosting range and effect are greatly expanded through cooperation with spraying holes in a fan-shaped array shape below the liquid spraying pipe; the wavy heating pipe in the water storage tank increases the contact area with the liquid, so that the heating efficiency of the liquid is remarkably improved, and the liquid with proper temperature is provided for defrosting; and through the arrangement of the heating block, the liquid spraying pipe is heated through the heating block, the spraying holes are effectively prevented from being frozen, and it is guaranteed that defrosting work is continuously and stably carried out.

An air source heat pump and steam boiler combined heat supply system comprises a water treatment system, an air source heat pump, a deaerator, a steam boiler and an induced draft fan, the water treatment system used for desalting and softening water is connected with the water inlet end of the air source heat pump, and the water outlet end of the air source heat pump is connected with the water inlet end of the steam boiler through the deaerator. The air outlet end of the steam boiler is connected with the air inlet end of the air source heat pump. The heat supply system is simple in structure, convenient to operate, flexible and practical, the air source heat pump is embedded in an existing mature steam boiler heat supply system, the waste heat of the smoke at the tail of the steam boiler is further recycled, the overall heat efficiency of the heat supply system is improved, and the heat supply cost is reduced.

The utility model discloses a heating device for a reduction gearbox of a crane at low temperature, which belongs to the technical field of crane design and comprises a heat insulation cover covering the periphery of the reduction gearbox, and one side of the heat insulation cover is fixedly connected with the crane. The heat preservation cover comprises a bottom plate, first side plates and second side plates, the bottom plate is arranged below the reduction gearbox, the first side plates are symmetrically arranged on the two sides of the reduction gearbox, the second side plates are arranged on the outer side of the reduction gearbox, the first side plates incline in the direction away from the reduction gearbox from bottom to top, and the second side plates incline in the direction away from the reduction gearbox from bottom to top. The inner wall surface of the first side plate faces the reduction gearbox; a plurality of heat tracing bands are fixedly arranged on the inner wall surfaces of the bottom plate and the first side plate; and the heat tracing band is connected to an electric cabinet through a temperature control switch. The device is simple in structure, high in heating efficiency and good in heat preservation performance, and the working efficiency of the crane in a low-temperature environment is improved.