415 results about "Gas heater" patented technology

1. The name of the product of this design: Portable gas heater (single and double tank series). 2. Purpose of this design product: used for heating, especially suitable for outdoor use. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the key points of the design: 3D drawing of Design 1. 5. Designate Design 1 as the base design.

Swimming pool or spa gas heaters, cabinets, water header manifolds, and heat exchangers include: gas heaters having an air gap between a cabinet and combustion chamber to reduce heat transfer to sides of the cabinet; gas heaters having a user interface that is repositionable on a top panel; gas heater cabinets including a removable top panel that can be hung on a side panel; gas heaters having a built-in dual junction box; gas heaters having a top-accessible igniter and burner that are interlocked to maintain positioning thereof; adaptable water manifolds including connectable inlet and outlet fittings that adjust effective inlet and outlet positions; heat exchangers having a plurality of tube-and-fin subassemblies arranged in a semi-circular configuration; and water manifolds including internal cartridges that divide the water manifold into a plurality of chambers for improved circulation through a heat exchanger.

Systems and methods for controlling a variable speed blower of a gas-fired heater associated with a swimming pool or spa are provided. A gas heater may include an air-fuel mixture chamber and a circuit. The circuit may be configured to receive a signal to initiate heating water and output a first control signal that operates a variable speed blower associated with the gas heater at a first rate of speed for a first time duration during ignition of the gas heater. The variable speed blower draws air into the air-fuel mixture chamber where the air is combined with gas fuel to ignite the air and the gas fuel to heat the water. The circuit may also be configured to output a second control signal that operates the variable speed blower at a second rate of speed after the first time duration has expired and after the gas heater is ignited.

Devices, systems, and methods for controlling a temperature within an interior space of a building, and modifying a pre-existing temperature control system by replacing a gas heater with a heat pump. In one embodiment, a temperature control system includes a cooling unit, a heat pump, and ductwork connecting the cooling unit and the heat pump. In one embodiment, a method of operating a temperature control system includes providing to an interior space of a building heated air with a heat pump, providing cooled air with the heat pump, and providing dehumidified air with the heat pump. The method may further include providing supplemental cool air to the interior with the heat pump. In one embodiment, a method of modifying or retrofitting a pre-existing temperature control system includes replacing a pre-existing gas heater with a heat pump, while retaining a cooling unit and ductwork of the pre-existing system.

The invention provides atomic layer deposition equipment. The atomic layer deposition equipment comprises a deposition chamber; an inert gas source configured to supply an inert gas having an initial pressure greater than an atmospheric pressure; a heater configured to heat the inert gas from the inert gas source and having the initial gas pressure, where the heated inert gas is delivered to the deposition chamber to heat the deposition chamber; and a bypass line fluidly connected to the deposition chamber and configured to direct the inert gas within the deposition chamber out of the deposition chamber. Through the supply of the pressurized gas, the heating time of the deposition chamber can be shortened, and the productivity of the atomic layer deposition equipment is effectively improved.

The utility model discloses an asphalt adding device for a mixing and kneading process in isostatic pressing graphite production, which comprises an asphalt mixing and pressurizing pipe, an asphalt pump, a gas conveying pipe, a gas control valve, a gas heater, a gas storage tank and a nozzle assembly, the output end of the asphalt pump is fixedly connected with the input end of the asphalt mixing pressurizing pipe in a sealed mode, one end of the gas conveying pipe is fixedly connected with the input end of the asphalt mixing pressurizing pipe in a sealed mode, the other end of the gas conveying pipe is fixedly connected with the gas storage tank in a sealed mode, and the gas control valve and the gas heater are fixedly arranged on the gas conveying pipe in a sealed mode. In the asphalt adding process, by heating gas, the temperature of the asphalt cannot be reduced after the hot gas is in contact with the asphalt, the asphalt and the aggregate are bonded and infiltrated together more easily, the gas pressure can be adjusted when the asphalt is added, and the heating speed and the spraying range of the asphalt can also be adjusted; therefore, the production efficiency and the kneading quality of the kneading pot are greatly improved.

The invention relates to the technical field of oil gas recovery, and discloses a cold-carrying circulation heat recovery oil gas recovery system which comprises an oil gas cooling liquefaction recovery subsystem and a cold-carrying circulation heat recovery subsystem. The oil gas cooling, liquefying and recycling subsystem comprises a first-stage cooling module, a second-stage cooling module, a third-stage cooling module and a fourth-stage heating module which are sequentially communicated through oil gas connecting pipes; the secondary refrigerant circulation heat recovery subsystem comprises a first-stage oil gas condenser A, a first-stage oil gas condenser B, a first secondary refrigerant valve, a second secondary refrigerant valve, a third secondary refrigerant valve, a fourth secondary refrigerant valve, a fifth secondary refrigerant valve, a sixth secondary refrigerant valve, a secondary refrigerant pump and a fourth-stage oil gas heater. The cold-carrying circulation heat recovery oil gas recovery system has the advantages of being low in energy consumption, energy-saving, environment-friendly, simple in refrigerating system, low in cost, high in reliability and the like, and the energy-saving and environment-friendly performance, the cost performance and the operation reliability of the oil gas recovery system are greatly improved.

The invention relates to the technical field of oil gas recovery, and discloses a variable-flow-direction cold-carrying circulation oil gas recovery system which comprises a variable-flow-direction oil gas cooling liquefaction recovery subsystem and a cold-carrying circulation heat recovery subsystem. The variable-flow-direction oil gas cooling, liquefying and recycling subsystem comprises a first-stage cooling module, a second-stage cooling module, a third-stage cooling module and a fourth-stage heating module which are sequentially communicated through oil gas connecting pipes; the secondary refrigerant circulation heat recovery subsystem comprises a first-stage oil gas condenser A, a first-stage oil gas condenser B, a first secondary refrigerant valve, a second secondary refrigerant valve, a secondary refrigerant pump, a fourth-stage oil gas heater, a third secondary refrigerant valve and a fourth secondary refrigerant valve. The flow-direction-variable cold-carrying circulation oil gas recovery system has the advantages of being low in energy consumption, energy-saving, environment-friendly, simple in refrigerating system, low in cost, high in reliability and the like, and the energy-saving and environment-friendly performance, the cost performance and the operation reliability of the oil gas recovery system are greatly improved.

The utility model relates to the technical field of heaters, in particular to a coal gas heater capable of preventing a heating tube bundle from being blocked and corroded, which comprises a coal gas side header, a gas inlet and a gas outlet, a partition plate is arranged at the bottom of the coal gas side header, and a smoke side header is arranged below the partition plate. The two sides of the smoke side header and the two sides of the coal gas side header are respectively provided with a conical connecting pipe, and a first threaded clamping ring is arranged at the position, located at the right side end of the coal gas side header, of one side of the interior of the conical connecting pipe. Through the arrangement of first galvanized steel channels, second galvanized steel channels, a first threaded clamping ring, a second threaded clamping ring and a threaded clamping seat, the coal gas heater can conveniently enable coal gas to impact a row of first galvanized steel channels and a row of second galvanized steel channels when the coal gas passes through the coal gas heater, so that coal gas impurities are bonded on the galvanized steel channels firstly; and when passing through the heating tube bundle, impurities are greatly reduced, so that the service life of the heating tube bundle is prolonged.

The utility model belongs to the technical field of ethylene glycol preparation, and particularly relates to an esterification purge gas treatment device in a process of preparing ethylene glycol from synthesis gas, which comprises an MN recovery tower, a gas mixer, a tail gas heater, a tail gas reactor, a cooler and a tail gas absorption tower, tower top outlet gas of the MN recovery tower and purge gas from PSA desorption gas of a hydrogenation unit enter a gas mixer, are mixed in the gas mixer, then enter a tail gas heater to be heated and then enter a tail gas reactor to react, an outlet of the tail gas reactor is connected with an inlet of a cooler, an outlet of the cooler is connected with a tail gas absorption tower, and an outlet of the tail gas absorption tower is connected with an outlet of the MN recovery tower. The tail gas absorption tower is connected with a spray water inlet pipe and a waste gas discharge pipe; and the tail gas reactor is a fixed tubular reactor. According to the device, nitrogen oxide which cannot be directly discharged in esterification purge gas can react to generate harmless gas such as nitrogen and nitrogen dioxide, environmental pollution is avoided, the device can adapt to the shutdown working condition of an esterification system, air does not need to be supplemented to the MN recovery tower, and the technological operation risk is reduced.

The invention discloses a coal-fired unit energy storage coupling carbon capture system and method based on calcium circulation, and aims to realize efficient and cheap capture of CO2 in flue gas while performing energy storage peak regulation of a coal-fired unit. The system comprises main equipment such as a calcination / heat absorption reactor, a pressurized carbonation / heat release reactor, a CaCO3 storage tank, a CaO storage tank and a CO2 storage tank, and auxiliary equipment such as a gas booster compressor, residual pressure power generation equipment, an electric heating module, a dust remover, a gas cooler, a solar gas heater and a smoke-CO2 heat exchanger. According to the method, electric energy of green electricity or valley electricity and heat energy of high-temperature flue gas of a boiler are converted into chemical energy by adopting the cyclic calcination characteristic of CaCO3-based particles and stored in the CaCO3-based particles, and the chemical energy is released again in the form of heat energy when a unit supplies heat to the outside or a power grid uses electricity at the peak. The system has high operation flexibility and economical efficiency.

The utility model discloses a double-cone rotary vacuum drier which comprises a left support, a right support, a controller, a double-cone tank body, a heating mechanism, a driving mechanism, an air inlet mechanism and a feeding mechanism, a left rotating shaft and a right rotating shaft which are of hollow structures are arranged on the two sides of the double-cone tank body, the heating mechanism is arranged on one side of the left rotating shaft, and the driving mechanism comprises a rotating motor and a reduction gearbox. The air inlet mechanism comprises a vacuumizing pipe arranged in an inner cavity of the right rotating shaft, one end of the vacuumizing pipe extends into the double-cone tank, the other end of the vacuumizing pipe is connected with a vacuum pump, an air blowing pipe is arranged in an inner cavity of the vacuumizing pipe, one end of the air blowing pipe penetrates through the vacuumizing pipe to enter the double-cone tank, and the other end of the air blowing pipe penetrates through the vacuumizing pipe to be communicated with an electromagnetic pulse valve. The electromagnetic pulse valve, the gas heater and the compressed gas tank are sequentially communicated, and the rotating motor, the vacuum pump, the electromagnetic pulse valve and the gas heater are electrically connected with the controller; according to the utility model, the nitrogen introduction amount can be saved, and the midway charging efficiency can be improved.

The invention discloses cleaning equipment, and belongs to the field of cleaning equipment. The cleaning equipment comprises an inner container, an exhaust assembly, an air duct, a fan and a heater. A cleaning cavity is formed in the inner container; the exhaust assembly is installed in the inner container and is configured to exhaust gas in the cleaning cavity under the condition that the exhaust assembly is opened. The air duct is mounted in the inner container and is provided with an air inlet and an air outlet which are both communicated with the cleaning chamber; the fan is configured to drive gas in the air duct under the starting condition; the heater is configured to heat the gas flowing through the air duct under the condition that the heater is started; wherein the height difference between the center of the air inlet and the center of the air outlet in the vertical direction is delta h1, the height of the cleaning cavity is H0, and delta h1 is larger than H0 and larger than or equal to 0.5 H0. The utilization rate of hot air heat energy is increased, the energy consumption of the hot air drying working mode of the cleaning equipment is reduced, and energy saving is achieved.

The invention discloses cleaning equipment, and belongs to the field of cleaning equipment. The cleaning equipment comprises an inner container, an exhaust assembly, an air duct, a fan, a heater and a water retaining cover. A cleaning cavity is formed in the inner container; the air exhaust assembly is configured to exhaust air in the cleaning chamber under the condition that the air exhaust assembly is opened; the air duct is provided with an air inlet communicating with the cleaning cavity and an air outlet communicating with the cleaning cavity, and the air inlet is located in the top wall of the inner container. The fan is configured to drive gas in the air duct under the starting condition; the heater is configured to heat gas in the air duct under the condition of starting; the projection of the inlet of the fan on the top wall of the inner container is at least partially overlapped with the projection of the air inlet on the top wall of the inner container, and the projection of the water retaining cover on the top wall of the inner container covers the projection of the air inlet on the top wall of the inner container. The utilization rate of hot air heat energy is increased, the amount of water directly rushing into the fan from the inlet of the fan is reduced, and the reliability of the working state of inner circulation assemblies such as the fan and the heater is improved.

The embodiment of the invention provides a device for calibrating a response time constant of a thermocouple temperature sensor and a use method, so as to calibrate the response time constant of the thermocouple temperature sensor. The device comprises a high-temperature and high-pressure air source module and an airflow rectification module, the high-temperature and high-pressure air source module comprises an air compressor, a booster pump, a high-pressure air storage tank, a pneumatic ball valve a, a pressure regulating valve, a flow regulating valve and an air heater, and all the parts are connected through pipelines; the airflow rectification module comprises a high-pressure buffer tank body, a pressure transmitter, a high-pressure buffer end cover, a gas guide port, a standard temperature sensor, a spray pipe, a temperature sensor mounting station, a high-frequency pressure sensor, a back pressure valve and a pneumatic ball valve b; and the gas heater is connected with the high-pressure buffer tank body through a pipeline.

The invention discloses a polyolefin elastomer solution devolatilization system and a polyolefin elastomer solution devolatilization method. The system comprises a horizontal double-shaft kneading devolatilization device and a double-screw extrusion devolatilization machine, a high-temperature atomizer is arranged at a feeding hole of the horizontal double-shaft kneading devolatilization device; the high-temperature atomizer comprises an atomizing nozzle, a gas heater and an air blower; a devolatilization opening is formed above the horizontal double-shaft kneading devolatilization device and is sequentially connected with a condenser and a vacuum pump; a discharge hole of the devolatilization device is connected with a discharge screw rod; a feeding port of the double-screw extrusion devolatilization machine is connected with a discharging screw, a devolatilization port is formed in the upper portion of the double-screw extrusion devolatilization machine and sequentially connected with a condenser and a vacuum pump, and a devolatilized product outlet is formed in the tail of the devolatilization machine. According to the invention, the horizontal double-shaft kneading devolatilization device and the double-screw extrusion devolatilization machine are matched with each other, and the high-temperature atomizer is assisted, so that a large-area heat transfer effect is realized, an efficient devolatilization effect is further realized, and a polymer product with lower residual volatile component content is obtained.

The utility model discloses a portable heat-to-electricity outdoor gas heater, and relates to the technical field of heating equipment. Universal wheels are fixed at four corners of the lower surface of the mounting plate; the blocking frame is fixed to the outer bottom wall of the containing box. The inserting plates are fixed to the two side walls of the mounting plate correspondingly, and the upper sides of the inserting plates are movably inserted into the two side walls of the containing box. The fixed plate is fixed on the outer wall of one side of the placing box; the vertical plates on the two sides of the pull rod are inserted into the fixing plates, and the pull rod is connected with the insertion plate on one side through a linkage mechanism. Two limiting holes are vertically and symmetrically formed in the side wall, adjacent to the limiting rod, of the pull rod, and the limiting rod and the limiting holes are inserted in a matched mode; the positioning block is fixed to the upper side wall of the fixing plate, the limiting rod is inserted into the positioning block, the limiting rod is sleeved with the reset spring, and the two ends of the reset spring are fixedly connected with the limiting rod and the inner wall of the positioning block respectively; the universal wheels can be moved out when needing to be moved, so that the warmer is conveniently driven to move, the universal wheels can be stored during use, and the stability during use is improved.

A full-nitrogen circulation, heating and vulcanization system, and a vulcanization method. The full-nitrogen circulation, heating and vulcanization system comprises a circulation line (7). The circulation line (7) is sequentially provided with a circulating pump (1), a gas heater (4), a uniform nitrogen heating device (6), a ring seat cylinder head, a capsule (31), a circulation buffer tank (15), and a filter (16). The capsule (31) is arranged on the ring seat cylinder head; the circulation buffer tank (15) is connected to a nitrogen replenishment line (33); the nitrogen replenishment line (33) is sequentially provided with a nitrogen production system (22), a low-pressure nitrogen buffer tank (23), a booster pump (24), a high-pressure nitrogen buffer tank (25), a pressure reducing valve (26), and a nitrogen replenishment one-way valve (27); a recovery line (20) is arranged between the capsule (31) and the low-pressure nitrogen buffer tank (23); the recovery line (20) is provided with a vacuum pump (29) and a first recovery valve (28); a second recovery valve (30) is connected in parallel to the head and tail ends of the vacuum pump (29); a cooling line (32) is connected in parallel on the circulation line (7); and the cooling line (32) is provided with a first cooling valve (17), a second cooling valve (18), and a cooling device (19).

The invention discloses cleaning equipment, and belongs to the field of cleaning equipment. The cleaning equipment comprises an inner container, an exhaust assembly, an air duct, a fan and a heater. A cleaning cavity is formed in the inner container; the exhaust assembly is installed in the inner container and is configured to exhaust gas in the cleaning cavity under the condition that the exhaust assembly is opened. The air channel is installed in the inner container and comprises an air inlet communicated with the cleaning cavity and an air outlet communicated with the cleaning cavity. The fan is configured to drive gas in the air duct under the starting condition; the heater is configured to heat the gas flowing through the air duct under the condition that the heater is started; wherein an air inlet of the exhaust assembly is communicated with the cleaning chamber, the height difference between the center of the air inlet and the center of the air outlet in the vertical direction is delta h2, the height of the cleaning chamber is H0, and delta h2 is larger than or equal to 0.5 H0 and larger than or equal to H0. The utilization rate of hot air heat energy is increased, the energy consumption of the hot air drying working mode of the cleaning equipment is reduced, and energy saving is achieved.

The invention discloses a novel carrier gas circulation dehumidification drying process system which comprises a carrier gas heater, a drying machine, a cyclone dust collector, a bag-type dust collector, a film dehumidifier, an adsorption dehumidifier and a regeneration heater, and the carrier gas heater is communicated with the drying machine; the top of the drying machine is sequentially connected with the cyclone dust collector and the bag-type dust collector; the bag-type dust collector is connected with the membrane dehumidifier; the membrane dehumidifier is connected with the adsorption dehumidifier; and the adsorption dehumidifier is connected with the regeneration heater. According to the novel carrier gas circulation dehumidification drying process system, the membrane dehumidifier and the adsorption dehumidifier are combined to remove humidity in circulation carrier gas, cooling is not needed in the dehumidification process, the energy utilization rate of the circulation carrier gas is increased to 85% or above, meanwhile, waste gas emission is reduced to 15% or below, more energy is saved, low carbon is achieved, and environment friendliness is achieved. The method can be widely applied to the carrier gas circulation drying field.

The present invention discloses a device and method for recovering the coldness of residual liquid in a synthesis gas CO cryogenic separation system, and belongs to the field of chemical process. When the synthesis gas CO cryogenic separation system is shut down and drained, the temperature can reach -190°C due to the large amount of low-temperature residual liquid stored in the cold box. The conventional treatment method is to send the low-temperature residual liquid to the flare gas heater through ambient gasification, and discharge it as room-temperature flare gas after heat exchange with saturated steam. When the amount of low-temperature residual liquid is large, this method takes a long time to vaporize the low-temperature residual liquid; or nitrogen is used to cool and gasify the low-temperature residual liquid to produce low-temperature flare gas, which is then sent to the flare gas heater for heat exchange. This method increases nitrogen loss, increases the load of the flare gas heater, makes its equipment size larger, and increases cost. The present invention utilizes the high-grade low-temperature coldness of the low-temperature residual liquid in the CO cryogenic separation system to convert room-temperature nitrogen into liquid nitrogen for storage and recovery, thereby reducing nitrogen loss, reducing 0.5MPaG steam loss, and reducing flare gas emissions.

A cleaning apparatus, belonging to the field of cleaning apparatuses. The cleaning apparatus comprises: an inner container, an air exhaust assembly, an air path, a blower fan, a heater and a water blocking cover. The inner container forms a cleaning chamber. The air exhaust assembly is configured to discharge air out of the cleaning chamber when being turned on. The air path is provided with an air inlet leading to the cleaning chamber and an air outlet leading to the cleaning chamber, the air inlet being located in the top wall of the inner container. The blower fan is configured to drive the air in the air path when being turned on. The heater is configured to heat the air in the air path when being turned on. The projection of an inlet of the blower fan on the top wall of the inner container at least partially overlaps the projection of the air inlet on the top wall of the inner container, and the projection of the water blocking cover on the top wall of the inner container covers the projection of the air inlet on the top wall of the inner container.

A film forming method includes the steps of loading a plurality of substrates into a processing chamber, heating an inside of the processing chamber by a chamber heater provided around the processing chamber, and heating a source gas in a first gas nozzle by a gas heater included in the first gas nozzle, and supplying the heated source gas from the first gas nozzle into the processing chamber. The supplying the source gas includes changing a position where the source gas is activated.

The invention provides a reaction system for preparing aromatic hydrocarbon through hydrogenation of carbon dioxide. The reaction system comprises an injection loop reactor, a rectification device and a recycle gas separation device, the injection loop reactor comprises a reaction kettle, a circulating pump, a reaction heat exchanger, a cross-flow filter and a Venturi injector which are communicated in sequence; part of the Venturi ejector is arranged in the reaction kettle, and the circulating gas separation device comprises a primary condenser, a secondary condenser, an absorption tower and a desorption tower which are communicated in sequence; the device further comprises a circulating gas heater. The jet loop reactor is adopted as key process equipment to perform carbon dioxide hydrogenation reaction to continuously prepare aromatic hydrocarbon, reaction fluid circulates in a loop in a large flow manner and is jetted at a high speed by the Venturi jet, and negative pressure is formed at a working nozzle, so that process gas is sucked into the jet to form micron-sized bubbles with large specific surface area, and the aromatic hydrocarbon is continuously prepared. Gas-liquid-solid contact is increased, the gas-liquid-solid multi-phase reaction speed can be increased, the reaction efficiency is improved, and therefore the air speed is increased under the condition that the yield is guaranteed.

The application discloses a gas heater control system capable of automatically adjusting the size of a flame, comprising a main controller, an infrared sensing device, a gas control valve, a burner and an ambient temperature sensor and the like. The infrared sensing device senses the presence state, distance and height information of a human body, and the ambient temperature sensor monitors the ambient temperature; the main controller generates a multi-stage or continuous gas flow instruction based on the above information, controls the gas control valve to adjust the size of the flame, and can also adjust the total flow according to the number of human bodies. The system is equipped with a lifting device, which can automatically adjust the height of the burner according to the sitting or standing posture of the human body; a wind speed sensor is arranged, and when the flame is extinguished, the wind speed is combined to judge whether to delay ignition; multiple protections such as a tilt switch, an audible and visual alarm and the like are arranged, and an auxiliary illuminating lamp is started to enhance the sensing performance in weak light. The system realizes intelligent and accurate temperature control, improves the safety and scene adaptability, is energy-saving and convenient.

The application discloses a kind of liquid metal cooling pool type reactor multifunctional passive residual heat removal systems based on heat pipe, belongs to reactor system component design technical field, the system is by high-temperature heat pipe, main container wall pit, gas storage tank, storage tank valve, gas heater, gas output pipe, gas input pipe, air extractor, safety container, main container, reactor pit, cold air descending passage, cylindrical thermal insulation layer, hot air ascending passage, connecting pipeline, exhaust chimney, heat radiation plate and in-pile fixed facility composition.The application can be in the condition of reactor total plant power failure, main heat exchanger water interruption and earthquake and other accident conditions, start passive accident residual heat removal system, and the residual heat of reactor core is removed to final heat sink by high-temperature heat pipe.Reactor is in low-power operation or shutdown condition, and auxiliary heating is carried out to in-pile liquid metal, to ensure that coolant is in molten state and promote flow.The system structure is simple, and has independence, passivity, inherent safety.

According to the device, a gas compressor, a gas heater and an atomizing gas pipe form an atomizing gas part, a cooling powder making chamber, a fan, a gas cooler and a cooling gas pipe form a cooling powder making part, and the cooling powder making chamber, the fan, the gas cooler and the cooling gas pipe form the cooling powder making part. The Venturi tube atomizer, the molten metal conveying pipe, the atomization liquid conveying pipe and the molten metal pool form an atomization part, and the molten metal pool is arranged at the lower end of a throat of the Venturi tube atomizer and communicated with the molten metal conveying pipe through the vertically-downward atomization liquid conveying pipe. High-temperature molten metal enters the molten metal pool through the molten metal conveying pipe and the atomization liquid conveying pipe, high-temperature atomization gas is accelerated to pass through the molten metal surface through the throat portion of the Venturi tube atomizer, the molten metal surface is torn off under the supercavitation effect, the molten metal is brought out, and the molten metal is diffused and atomized at a diffusion opening along with the gas to form finer liquid drops. And the atomized gas is brought into the cooling powder-making chamber and is cooled into metal powder by the cooling gas.

The utility model provides a gas heater, and relates to the technical field of heating equipment. The gas heater comprises a gas inlet valve, a hollow rotary connecting rod, a gas connector connected with the rotary connecting rod and a combustion mechanism arranged corresponding to the gas connector. The rotary connecting rod is connected with an air inlet valve; the number of the gas connectors is at least two, and at least one gas connector is rotationally connected with the rotary connecting rod. And the combustion mechanisms are fixedly connected with the corresponding gas joints. According to the gas heater, the gas inlet valve is connected with the gas connectors through the hollow rotary connecting rod, and combustible gas is conveyed into the combustion mechanisms corresponding to the gas connectors to be combusted and release heat. Due to the fact that the at least one gas connector is rotationally connected with the rotary connecting rod, and the combustion mechanisms are fixedly connected with the corresponding gas connectors, a user can rotate the gas connectors and the corresponding combustion mechanisms to enable the combustion mechanisms to face different directions, multi-angle heating is achieved, and the use requirements under the multi-person heating scene are met.

The application provides a tail gas aftertreatment method, device, computer program product and vehicle. The aftertreatment system comprises an SCR and a heater. The heater is installed on a tail gas pipeline upstream of the SCR. The method comprises: a first acquisition step of acquiring an SCR tail gas temperature in real time. The SCR tail gas temperature is the temperature of tail gas in the SCR. A second acquisition step of acquiring a plurality of oil injection amounts within a predetermined time period under the condition that the SCR tail gas temperature is less than a high-efficiency temperature threshold. The high-efficiency temperature threshold is the minimum temperature of the SCR with a conversion efficiency greater than a predetermined conversion efficiency. A first control step of controlling the heater to be turned on for tail gas heating under the condition that all the oil injection amounts within the predetermined time period are less than an oil injection amount threshold. A second control step of controlling the heater to be turned off under the condition that any one of the oil injection amounts within the predetermined time period is greater than or equal to the oil injection amount threshold. The problem of high power consumption of the tail gas heater in the prior art is solved.

A cleaning device, comprising an inner container (1), an air discharge assembly (4), an air duct (21), a fan (22), and a heater (23). The inner container (1) forms a cleaning chamber (11); the air discharge assembly (4) is mounted on the inner container (1) and is configured to, when turned on, discharge gas in the cleaning chamber (11); the air duct (21) is mounted on the inner container (1), and has an air inlet (211) communicated with the cleaning chamber (11) and an air outlet (212) communicated with the cleaning chamber (11); the fan (22) is configured to, when turned on, drive gas in the air duct (21); and the heater (23) is configured to, when turned on, heat gas flowing through the air duct (21). The air inlet (41) of the air discharge assembly (4) is communicated with the cleaning chamber (11), the height difference between the center of the air inlet (41) and the center of the air outlet (212) in the vertical direction is Δh2, and the height of the cleaning chamber (11) is H0, wherein H0≥Δh2≥0.5H0.