115 results about "Steam engine" patented technology

The utility model relates to the technical field of concrete electric poles, and discloses a concrete electric pole production energy-saving maintenance device which comprises a maintenance mechanism, an adjusting mechanism is installed on the inner wall of the maintenance mechanism, a supporting mechanism is arranged in the maintenance mechanism, and a concrete electric pole body is installed on the inner wall of the supporting mechanism. A steam mechanism is installed on the inner wall of the curing mechanism, a drainage mechanism is installed on one side of the curing mechanism, the adjusting mechanism comprises a supporting frame, the outer portion of the supporting frame is fixedly connected to the inner wall of the curing mechanism, and a first motor is fixedly connected to the top of the supporting frame. According to the electric pole steam spraying device, gas in the steam box is sucked through the draw-off pump, enters the flow dividing pipe through the connecting pipe and is finally sprayed out through the spraying head, the first motor drives the rotating plate to rotate, drives the follow-up plate to move and controls the limiting block so as to adjust the positions of the flow dividing pipe and the spraying head, and it is guaranteed that steam is evenly sprayed to the surface of an electric pole.

The invention relates to the technical field of air source heat pump steam engines, in particular to an efficient and environment-friendly air source heat pump steam engine and application of the efficient and environment-friendly air source heat pump steam engine. A steam outlet of a gradient type liquid separation evaporator communicates with a gas-liquid separation tank and a first steam inlet of an inverter compressor through a four-way valve, and a monitoring assembly is arranged between the inverter compressor and the four-way valve; the variable-frequency compressor is communicated with the double-flow-channel condenser, the double-flow-channel condenser is communicated with the liquid storage device, the liquid storage device is communicated with the flash tank type economizer through the two-stage throttling assembly, the top of the flash tank type economizer is communicated with a steam supplementing opening of the variable-frequency compressor, and the flash tank type economizer is communicated with the gradient type liquid separation evaporator through the two-stage throttling assembly. The gradient type liquid separation evaporator is provided with a low-temperature auxiliary assembly. By the adoption of the structure, air serves as a heat source, zero pollutant emission is achieved, the frequency of the inverter compressor is dynamically adjusted according to loads, high efficiency and energy saving are achieved, the operation cost is reduced, and requirements of multiple fields such as textile printing and dyeing, food processing, chemical and medicine and agricultural greenhouse heating are met.

The utility model discloses a condensate tank dead steam recycling device which comprises a supporting seat and a recycling box, a steam engine is installed on the upper surface of the supporting seat, a bearing groove is formed in the upper surface of the steam engine, the condensate tank dead steam recycling device further comprises a discharging box and a recycling mechanism, the discharging box is installed in the steam engine, and the recycling mechanism is installed in the bearing groove. The recycling mechanism comprises an air pump, a waste steam pipe, a control valve and a recycling box, a discharging pipe is installed at the lower right end of the discharging box, the cooling mechanism comprises a cooling box, a storage box, a heat absorption plate and a fan, the cooling box is installed on the right side of the steam engine, and the upper end of the cooling box is connected with a suction pump through the discharging pipe. According to the condensate tank dead steam recycling device, dead steam generated by machining can be recycled through the recycling mechanism, energy is directly discharged, recycling is conducted, the efficiency is improved, acetone cyanohydrin after machining is conveniently cooled through the cooling mechanism, feeding and discharging do not need to be conducted back and forth, condensate can be recycled through the circulating mechanism, and waste is reduced.

High-temperature and high-pressure gas is generated according to an internal combustion engine steam engine basic principle using method to drive piston motion, and the motion is converted into mechanical motion. The design principle of the hydrogen water vapor power internal combustion steam engine is based on the principle. According to the characteristic that the combustion temperature of hydrogen is high, the characteristic that water can be electrolyzed into hydrogen and oxygen, and the characteristic that the boiling point of the water under conventional atmospheric pressure is 100 DEG C, the hydrogen water vapor power internal combustion steam engine is integrated to obtain a result.

The invention relates to an air-steam engine comprising one or more cylinders and a piston located therein, capable of reciprocating. The air-steam engine further includes an injection nozzle and a pre-chamber. The pre-chamber is arranged between the injection nozzle and the cylinder, and a fuel fluid can be introduced into the pre-chamber from the injection nozzle. Compressed air from the cylinder is drawn into the pre-chamber, forming an air-steam mixture within the pre-chamber, which can then be introduced into the cylinder. This enables the reciprocating movement of the cylinder. Furthermore, the cylinder is connected to a condenser via an exhaust valve, causing the air-steam mixture or the vapor from the air-steam mixture to condense and be present as condensate in the condenser.The condenser and the injector are connected via a high-pressure pump and a high-pressure tank, allowing the fuel fluid to flow from the condenser back to the injector via another high-pressure pump and tank. This closed-loop system in the air-steam engine results in efficient operation.

The utility model provides a kind of dehumidification dry steam unit, including primary energy conversion component, waste heat condenser and secondary energy conversion component, waste heat condenser has primary refrigerant inlet, primary refrigerant outlet, secondary refrigerant inlet and secondary refrigerant outlet;The primary energy conversion component includes: primary compressor, for refrigerant reaches predetermined temperature and pressure, with refrigerant inlet and refrigerant outlet, its refrigerant outlet is connected with the primary refrigerant inlet of waste heat condenser by pipeline;First internal pipeline and second internal pipeline, the gas needing drying is sequentially passed through first internal pipeline, second internal pipeline, and first internal pipeline and second internal pipeline are communicated head to tail along the direction of gas flow;Finned condenser, located in second internal pipeline, with refrigerant inlet and refrigerant outlet, its refrigerant inlet is communicated with the primary refrigerant outlet of waste heat condenser by pipeline;Finned evaporator;Primary gas-liquid separator.

A rotary steam engine includes: a stator mechanism including two stators forming a track therebetween; a rotor rotatably arranged between the stators and including cylinders and perorations open on an outer surface of the rotor and communicating with the cylinders; a mandrel disposed through the stator mechanism and the rotor; pistons respectively received in the cylinders and respectively including piston shafts movable along the track, an engine lubricating system being formed between the cylinders, pistons and stators; and gas covers radially movable, resiliently disposed on the stator mechanism and covered on the rotor; wherein when a gas injection space between the gas cover and the rotor communicating with the perorations, steam can flow to enter the cylinders to drive the pistons; wherein when the gas injection space is not in communication with the perorations, the pistons move to discharge steam in the cylinders via the perorations.

The utility model relates to the technical field of steam cleaning, in particular to a portable three-dimensional steam engine which comprises a steam engine body and a rotating pipe. The handheld handle is connected with the steam outlet end of the steam pipe; a plurality of steam outlet holes are formed in the outer wall of the second spray pipe in a circumferential array manner; the rotating pipe is movably arranged on the outer side of the second spraying pipe in a sleeving manner; the air outlet grooves are formed in the rotating pipe in an array mode, and the air outlet grooves correspond to the steam outlet holes one to one; a plurality of bristles are arranged on the outer wall of the rotating pipe; the gear ring is fixed to the outer wall of the end, close to the handheld handle, of the rotating pipe. The motor is fixed on the supporting plate; the gear is fixed on an output shaft of the motor, and the gear is meshed with the gear ring; by improving the portable three-dimensional steam engine, the portable three-dimensional steam engine has the advantages that the arc-shaped surface can be conveniently cleaned, the cleaning efficiency on the surface of an arc-shaped object is improved, and the structure is simple, so that the problems and defects in the prior art and equipment are effectively solved.

An air-vapor engine which exhibits one or more cylinders and a piston located therein, by which a stroke movement can be performed. Furthermore, the air-vapor engine has an injection nozzle and a prechamber. The prechamber is arranged between the injection nozzle and the cylinder, a fuel fluid is introduced into the prechamber from the injection nozzle. Compressed air from the cylinder can be received by the prechamber. This enables the stroke movement of the cylinder. In addition, the cylinder is connected to a condenser via an outlet valve such that the air-vapor mixture or the vapor of the air-vapor mixture condenses and is present in the condenser as condensate. The condenser and the injection nozzle are in flow connection. This means that the air-vapor engine exhibits a circuit, resulting in efficient operability.

The utility model discloses microwave sterilization equipment which comprises an equipment support, a motor, an extrusion pipe and two steam pumps, an extrusion screw used for conveying materials is rotationally connected in the extrusion pipe, and the extrusion screw is fixedly connected to an output shaft of the motor through a coupler. A steam mechanism used for steam sterilization is arranged at the tail end of the extrusion pipe, the steam mechanism comprises a steam pipe fixed to the tail end of the extrusion pipe, an air channel used for air flowing is formed in the steam pipe, and the two steam pumps communicate with the air channel through air inlet pipes; the efficient and uniform steam sterilization effect is achieved through the steam mechanism, a steam pump in the steam mechanism conveys steam to a steam pipe, the steam is sprayed out from a plurality of air outlets and makes contact with materials in all directions, it is ensured that all parts of the materials are evenly heated, microorganisms are effectively killed, and microwaves generated by a microwave generator in the sterilization mechanism penetrate into the materials for sterilization; the inactivation effect on the heat-resistant spores is greatly improved.

This utility model discloses a noise reduction structure for a variable-diameter volute casing of a Roots-type steam compressor, specifically relating to the field of Roots-type steam engine technology. The noise reduction groove contains multiple baffles arranged in a circular array, each baffle having multiple sound-absorbing holes arranged in a linear array. An arc-shaped plate is also provided on the baffle, with a predetermined gap between the arc-shaped plate and the baffles to form a sound-absorbing groove. The noise reduction structure for the variable-diameter volute casing of the Roots-type steam compressor provided by this utility model achieves this through a cover on the casing, isolating the noise of the Roots-type compressor within the casing. The volute casing on the cover allows noise to enter and be reduced within the volute casing. The noise reduction groove and the multiple baffles within it achieve multiple absorption processes to reduce volume. The arc-shaped plate on the baffle and the sound-absorbing groove formed between the arc-shaped plate and the baffle allow sound to enter the baffles, enter the multiple sound-absorbing holes, and be absorbed within the sound-absorbing groove.

This utility model relates to the field of waste gas treatment and filtration technology, and discloses a waste gas treatment emission filtration mechanism, including a fixed base and a three-way valve. A treatment box, a first exhaust box, and a second exhaust box are fixedly installed on the outer surface of the fixed base. The output end of the three-way valve is fixedly connected to the interior of the first exhaust box and the second exhaust box, respectively. When the activated carbon filter plate in the first exhaust box has been used for too long and the filter plate efficiency has decreased, the three-way valve is controlled to discharge waste gas into the second exhaust box, and the exhaust pipe and sewage pipe fixedly connected to the outer surface of the first exhaust box are closed. The waste gas treatment worker controls the steam unit installed through the outer surface of the first exhaust box to operate, so as to perform self-cleaning on several activated carbon plates, thereby reducing the need for workers to disassemble and replace the activated carbon filter plates after a period of use and improving the emission efficiency of waste gas.

The utility model relates to the technical field of textile fabric processing, in particular to a flattening and wrinkle removing machine for textile fabric processing. Comprising a bottom plate and a wrinkle removing mechanism, the wrinkle removing mechanism comprises a steam box, a rotating plate, an upper steam pipe, a lower steam pipe, an electric valve, a left supporting device, a right supporting device and an extruding device, during wrinkle removing of the textile fabric, an external steam engine is started firstly, then the electric valve is opened, and steam can be conveyed into the upper steam pipe and the lower steam pipe and sprayed out through corresponding steam spraying holes; therefore, fabric steam fumigation can be carried out before fabric extrusion and wrinkle removal, fabric fibers recover elasticity, finally the fabric is flattened through extrusion of the extrusion device, the rolling mechanism can roll after flattening, and the problems that when an existing fabric wrinkle removal mechanism adopts a roller to carry out extrusion and wrinkle removal, the fabric wrinkle removal efficiency is high, and the fabric wrinkle removal efficiency is high can be solved. And as the fabric is not softened, the wrinkle removing quality is severely reduced, and the use is inconvenient.

The rod-free mechanisms are used for converting rotational motion into reciprocating motion and vice versa. The mechanism can be used in displacement pumps and compressors, as well as in internal and external combustion engines, cubic expansion engines, steam engines, hydro and pneumatic engines. Coulisse-eccentric motor automatically feeds and distributes the actuation fluid to the swept-volume capacities. Coulisse-eccentric motor is easy to manufacture, contains a minimum of parts, such as a housing, a coulisse and an eccentric, can be made entirely of ceramics, and allows converting the pressure difference between the two internal volumes of the coulisse into rotational motion on the shaft, and vice versa. Coulisse-eccentric motor in motion allows reversing, changing the shaft torque and compression ratio, while all engine components operate normally and are not subjected to excessive loads.

The steam engine and the steam turbine push the machine to run by water vapor evaporated by heat released by fuel combustion absorbed by water; an internal combustion engine, a turbojet engine and a gas turbine are driven to operate by high-temperature and high-pressure waste gas generated by combustion of fuel in a combustion chamber. The composite combustion chamber is provided with the combustion chamber and the water mixing chamber, fuel combustion can be completed in the composite combustion chamber, water is evaporated into water vapor to form mixed gas, a machine is pushed to operate, and the heat efficiency of a heat engine is greatly improved.

1. Name of the designed product: steam engine. 2. Use of the designed product: the designed product is used for the equipment for producing steam. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

The utility model discloses a kind of MVR system heat source energy-saving system, it is related to steam mechanical re-compression equipment technical field, main purpose is to provide a kind of MVR system heat source energy-saving system which can reduce steam usage amount, and reduce the use load of circulating water.A kind of MVR system heat source energy-saving system of the utility model main technical scheme is as follows: a kind of MVR system heat source energy-saving system, comprising: original liquid component, one end of first liquid supply pipeline is connected to original liquid tank;Heat exchange component, the other end of first liquid supply pipeline is connected to the one end of pipe passage of circulating water heat exchanger, the other end of pipe passage of circulating water heat exchanger is connected to the pipe passage of first preheater;Processing component, circulating component is connected to third preheater and distilled water component respectively, one end of distilled water component is connected to the one end of shell passage of first preheater, the other end of shell passage of first preheater is connected to the one end of shell passage of circulating water heat exchanger.The utility model is mainly used for metering flow.

The steam generators of conventional steam engines require a great deal of space. By using a high-temperature heat exchanger to heat the fresh air, steam engines can be built that are only slightly larger than Otto engines. Since heat radiation increases exponentially with rising temperatures, very compact steam engines are possible with this design. Tiled stoves have the problem that the tiles heat up very slowly, and most of the heat escapes up the chimney. The same high-temperature heat exchanger can also be used for these tiled stoves. The heat exchanger ensures that the combustion chamber is continuously heated until all the heat is absorbed by the tiles. This means that wood only needs to be added half as often.

The invention discloses a steam engine, which comprises a steam generating part; the air pressure parts comprise first pistons and second pistons, the first pistons are arranged in the first cavities, and the second pistons are arranged in the second cavities; the transmission shaft comprises first crank pins and second crank pins, one first crank pin is a high-pressure main crank pin, the other first crank pin is a low-pressure main crank pin, one second crank pin is a high-pressure auxiliary crank pin, the other second crank pin is a low-pressure auxiliary crank pin, the first crank pins are connected with the first piston, and the second crank pins are connected with the second piston. The high-pressure main crank pin, the low-pressure main crank pin, the low-pressure auxiliary crank pin and the high-pressure auxiliary crank pin are arranged in the rotating direction of the transmission shaft; the plugging surface is provided with a plugging side and an opening side; the first crank pin is disconnected from the steam generating part in the blocked side first cavity, and is communicated with the steam generating part in the open side first cavity; the second crank pin is disconnected from the first cavity and the second cavity on the blocking side and communicated with the first cavity and the second cavity on the opening side. The steam engine is high in energy utilization rate and large in output torque.

The invention relates to an energy-saving steam-curing device combining photovoltaic energy storage and mains supply, and belongs to the technical field of steam-curing devices, the energy-saving steam-curing device comprises a steam-curing box and a steam engine located on one side of the steam-curing box, a photovoltaic panel is installed on the upper surface of the steam-curing box, a lithium battery is installed on the upper surface of the steam-curing box, and a photovoltaic inverter is installed on the steam-curing box; a lithium battery is arranged on the upper surface of the steam curing box, a dual-power automatic change-over switch is arranged on the portion, located on one side of the lithium battery, of the upper surface of the steam curing box, a steam spraying assembly capable of rotating in a reciprocating mode is arranged in the steam curing box, the steam engine is connected with a steam recycling assembly, a motor is arranged on the steam curing box, and a control panel is installed on the steam curing box. The centrifugal fan sucks unused steam into the connecting sleeve and guides the unused steam into the steam engine, steam recycling is achieved, waste of water resources is reduced, the energy utilization rate is increased, the steam spraying assembly capable of rotating in a reciprocating mode enables the connecting pipe and the steam nozzle to conduct regular reciprocating rotation spraying, it is ensured that the steam evenly covers the interior of the steam curing box, and the steam curing effect is improved.

The utility model relates to heating component technical field, concretely is a kind of heating fire tube for steam engine, including several fire tube bodies, the surface of several fire tube bodies is equipped with mounting disc, the side of mounting disc close to fire tube body is fixedly connected with several fixed positioning plates, the side of mounting disc close to fire tube body is equipped with several mobile positioning plates, the inner wall of fixed positioning plate and mobile positioning plate is arc, the inner wall of mounting disc is slidably connected with several slide rods, the end of several slide rods close to fire tube body is fixedly connected with arc block, the arc block is slidably connected in the inner wall of mounting disc.The utility model, solve the heating fire tube for steam engine in prior art needs multiple cooperation to install to steam engine internal use, and in the process of installing heating fire tube for steam engine, usually need staff to install in turn, make the problem of lower installation efficiency.

The present invention relates to a piston steam engine (1) that is preferably used to generate electric power, said piston steam engine comprising: at least one cylinder (10) that encloses a working chamber (15); a piston that can move back and forth in the working chamber (15) along a central axis of the cylinder (10) between a top dead centre and a bottom dead centre; a steam chamber (76) for providing fresh steam; an inlet valve (26) for controlling, in an open-loop and / or closed-loop manner, a fluid flow of the provided fresh steam which acts as the working fluid of the piston steam engine, the working chamber (15) being enclosed over its periphery by a working chamber wall (14) formed by or inserted into the cylinder (10); a plurality of first exhaust-steam outlet openings (13) which are distributed peripherally in the working chamber wall (14); and a plurality of second exhaust-steam outlet openings (18) which are provided in the working chamber wall (14), preferably distributed peripherally, above the first exhaust-steam outlet openings (13). The present invention also relates to: a combined heat and power plant comprising the steam engine (1); a computer-implemented method for controlling, in an open-loop and / or closed loop manner, a piston steam engine; and a computer program and a computer-readable storage medium.

The utility model discloses a bronze ware quick dewaxing equipment, including the bottom plate, the outer surface fixed connection of bottom plate has two support frames, two the support frame mutual close one end common fixed connection has dewaxing box, the outer surface of dewaxing box is equipped with lifting mechanism, the inside of dewaxing box is equipped with flushing mechanism, the outer surface sliding connection of dewaxing box has the limiting panel. The device utilizes the water inlet pipe set, can conveniently add the flowing hot water of staff to dewaxing box, realizes the small wax of remaining on the object in dewaxing box to carry out the flushing clearance, utilizes the steam engine set, can output steam and through import pipe will steam delivery to dewaxing box, limiting panel can carry out the stratification to dewaxing box, realizes the flow of steam to carry out the blocking, increases the utilization of steam, solved only through the steam and carries out the dewaxing operation, and the object on possibly remaining small wax problem, the cover plate is convenient for staff to install or take out the placing box.

The invention relates to a gas boiler and steam turbine cooperative furnace burning method, and belongs to the technical field of furnace burning control methods. According to the technical scheme, when the pressure of a gas header pipe exceeds the pressure setting upper and lower limits, the power generation load is dynamically adjusted, a gas flow setting value is obtained according to the power generation load, a gas valve group is dynamically adjusted according to the difference value between the gas flow and the gas flow setting value, and the power generation load is adjusted for a boiler in the process. And the steam turbine adjusts the steam pressure by obtaining a steam pressure set value according to the steam flow, and dynamically adjusting the opening degree of the control valve according to the difference between the steam pressure and the set value and the offset value of the steam pressure. According to the method, furnace and machine coordination control and automatic sliding pressure furnace burning control can be achieved, normal furnace burning is guaranteed, meanwhile, the influence caused by the extremely large and extremely small gas pressure is considered, and in addition, the lag defect of non-full-load constant pressure control is avoided.

The utility model belongs to the technical field of pipelines, and discloses a steam engine blow-off pipeline which comprises a main pipe, the main pipe is communicated with a water outlet pipe and a water filter pipe in a right-angle mode, and the side face of the water filter pipe is communicated with a water inlet pipe. The two ends of the main pipe and the output end of the water outlet pipe are each provided with a connecting pipe, and each connecting pipe is provided with a valve body. The water filter pipe is in threaded connection with a plug, the plug is integrally connected with a plurality of connecting rods, and the lower sides of the plurality of connecting rods are integrally connected with a filter basket. The problem that sewage overflows from the sewage ditch is fundamentally solved, and the processing environment is protected; under the effect of the filter basket, large impurities in sewage can be blocked and collected, a sewage pipeline is prevented from being blocked, and the circulation effect is guaranteed; the filter basket can be taken down, and then the pipeline can be conveniently dredged by using a dredging tool, so that the use effect is ensured.

The invention relates to the technical field of charge level punching and steam spraying devices, in particular to a sintering machine unpowered charge level punching and steam spraying device which comprises a sintering trolley, a punching assembly is installed on the sintering trolley and comprises two sets of supports, and the two sets of supports are both installed on the two sides of the sintering trolley. The device has the advantages that the punching roller is driven by the first motor to punch holes in the sinter material surface, the porosity of a material layer is increased after the sinter material surface is punched, the flow speed of air in the material layer is increased, the punching efficiency of the sinter material surface is improved, and the punching quality of the sinter material surface is improved. After the sinter material is punched, steam is conveyed through the steam pipe in cooperation with the steam engine, the steam is sprayed to the sinter material through the steam pipe, steam spraying is conducted on holes punched in the surface of the sinter material, the air permeability is improved, the air permeability of an ore bed is improved, and the phenomenon that the physical and chemical change reaction of minerals is incomplete during negative-pressure combustion is reduced.

The ornamental design which is claimed is shown in solid lines in the drawings; the evenly dashed broken lines illustrate portions of the vacuum steamer that form no part of the claimed design; broken lines formed of unequal length dashes (i.e., dash-dot) show boundaries between claimed and unclaimed portions of the design; the shade lines in the figures show contour and not surface ornamentation.

Hay steamer (1) for steam treatment of hay comprising a lockable container (10) with a receiving chamber (11) for receiving hay, a steam distribution device (20) in the receiving chamber (11) of the container (10) and a steam generator (30) arranged outside the container (10) and connected to the steam distribution device (20) for generating steam, wherein a temperature sensor (40) is arranged in the receiving chamber (11) of the container (10), which, when filled with hay, is arranged in the hay at a distance of at least 5 cm above the floor (15) of the receiving chamber (11), wherein the distance of the temperature sensor from the floor (15) is a maximum of one third of the height of the receiving chamber (11), and a control device (50) connected to the temperature sensor (40) and the steam generator (30) is provided, wherein the control device (50) is configured to control the steam generator (30) in such a manner as tothat after the start of a steaming process, a predetermined target temperature of at least 80 °C is established and maintained at the temperature sensor (40).

The invention relates to the technical field of gasoline engines, in particular to a gasoline steam engine. The engine comprises a water tank, a high-pressure plunger pump, a heating coil, a steam injection device and a control device, the water tank is communicated with the high-pressure plunger pump, the high-pressure plunger pump is communicated with the heating coil, the heating coil is arranged at an exhaust gas outlet of the engine and connected with the steam injection device, and the steam injection device is connected with the control device. An injection opening of the steam injection device corresponds to an engine cylinder, and the control device is used for controlling the steam injection device to inject supercritical steam into the cylinder while the engine is electronically ignited. The gasoline heat efficiency and the fuel economy are improved, the fuel consumption is reduced, the power output of the engine is improved, and meanwhile the knocking phenomenon under the high compression ratio is avoided.

A drawer-type steamer includes a steamer drawer configured to be selectively withdrawn rearward or pulled forward. The steamer drawer includes: a steaming cavity, configured to accommodate a to-be-steamed object, where a rear wall of the steaming cavity has a steam inlet, and a front wall of the steaming cavity has a steam outlet; a steam generator, arranged behind the steaming cavity, where steam generated by the steam generator is configured to move forward to enter the steaming cavity through the steam inlet and move forward to exit the steaming cavity through the steam outlet. As a result, an efficient and convenient steamer can be provided.