CN105863878A

CN105863878A - Air filtering system with high energy utilization rate

Info

Publication number: CN105863878A
Application number: CN201610190039.3A
Authority: CN
Inventors: 时建华
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-03-30
Filing date: 2016-03-30
Publication date: 2016-08-17

Abstract

The invention discloses an air filtering system with the high energy utilization rate. The air filtering system is integrally formed by improving an automobile. The air filtering system with the high energy utilization rate is driven by an engine and comprises an exhaust fan, an activated carbon filtering device, a titanium oxide degradation device, an ultraviolet light sterilization device and an engine energy recovery device. Air in a room is pumped out through the exhaust fan, sequentially treated through the activated carbon filtering device, the titanium oxide degradation device and the ultraviolet light sterilization device and then returned back to the room. The engine tail gas energy recovery device is used for recovering energy of tail gas of the engine. The air filtering system is simple and practical in structure, the air filtering effect is good, movability is high, energy can be reused, and energy saving and environment protection are achieved.

Description

A kind of air filtering system of high-energy utilization rate

Technical field

The present invention relates to air purification field, be specifically related to the air filtering system of a kind of high-energy utilization rate.

Background technology

One important application of indoor air filtration formula field of air filtration.For most family or small office, An accurate air filter is separately configured often and uneconomical, and the parameter such as utilization rate and power consumption is the most undesirable.Cause This, portable air filtering system just arises at the historic moment.

In existing portable air filtration system, major part is given birth to according to automobile improvement driven by the engine, but it is deposited The problem such as low at capacity usage ratio, filter effect is bad.

Summary of the invention

For the problems referred to above, the present invention provides the air filtering system of a kind of high-energy utilization rate.

The purpose of the present invention realizes by the following technical solutions:

The air filtering system of a kind of high-energy utilization rate, its entirety is formed by automobile improvement, electromotor drive, including convulsion Machine, active carbon filtering device, titanium oxide decomposition apparatus, ultraviolet light sterilizing device and engine power retracting device, indoor sky Gas is extracted out by air exhauster and sequentially passes through after active carbon filtering device, titanium oxide decomposition apparatus and ultraviolet light sterilizing device process, Again send indoor back to；Described energy of engine's tail gas retracting device for reclaiming the energy of motor exhaust, it include radiator, Electromotor, backwater vaporizer, high temperature heat-exchanging loop, low-temperature heat exchange loop, accumulator battery, inverter and converter, back pressure are adjusted Joint blower fan；Described radiator is connected with electromotor, and radiator leads to supercooled water to be transferred to the heat of electromotor on radiator, and By the surface radiating of radiator；It is cold that the tail gas of electromotor sequentially passes through backpressure regulation blower fan, high-temperature evaporator, cryogenic vaporizer But heel row is to air；

High temperature heat-exchanging loop includes that the high temperature circulation pump, high-temperature evaporator, high temperature multistage expansion turbine and the high temperature that are sequentially connected are cold Condenser, in high temperature heat-exchanging loop, the medium of flowing is water, and high-temperature evaporator is arranged on the high-temperature tail gas pipeline after backpressure regulation blower fan On, the WATER AS FLOW MEDIUM cooled down through warm condenser is squeezed in high-temperature evaporator by high temperature circulation pump, and the WATER AS FLOW MEDIUM after heating subsequently enters High temperature multistage expansion turbine does work；

Cold cycle pump that low-temperature heat exchange loop includes being sequentially connected, cryogenic vaporizer, intermediate extraction superheater, low temperature multistage are swollen Swollen machine and low-temperature condenser, in low-temperature heat exchange loop, the medium of flowing is R245fa, and cryogenic vaporizer is arranged on through high temperature evaporation On low temperature exhaust gas pipeline after device；Squeezed in cryogenic vaporizer through the medium R245fa of low-temperature condenser cooling by cold cycle pump, WATER AS FLOW MEDIUM after heating enters the acting of low temperature multistage decompressor after intermediate extraction superheater heats；Intermediate extraction superheater is pipe Formula heat exchanger, heat source draws gas from the intergrade of high temperature multistage expansion turbine；Also include regulating valve, described regulation valve root According to the R245fa Temperature Feedback after intermediate extraction superheater and the pressure feedback in high temperature multistage expansion turbine, it is used for regulating centre The flow that level is drawn gas, when the R245fa Temperature Feedback value after intermediate extraction superheater is overheated more than or less than the intermediate extraction set During R245fa temperature value after device, automatically turn down or open the big aperture regulating valve, simultaneously when in high temperature multistage expansion turbine When pressure feedback value is less than the pressure atresia value in the high temperature multistage expansion turbine set, automatic blocking regulation valve is opened, heating After intergrade draw gas and be back to high temperature recuperated cycle loop；Distance L between high-temperature evaporator and cryogenic vaporizer is tail gas row The 3/4 of feed channel overall length, high temperature multistage expansion turbine is 3 grades of decompressors, and intergrade is drawn gas and taken from the expansion of high temperature multistage turbine The 2nd grade of machine；

High-temperature evaporator and cryogenic vaporizer all use screen formula-spiral heat exchange tube, and the first half section in gas inlet side uses stagger arrangement cloth The screen formula heat exchanger tube put, second half section employing spiral heat exchange tube；Described electromotor also sets up on the CWR road of radiator Having backwater vaporizer, for reclaiming the heat of engine cooling water backwater, its cooling source takes from the centre tap of cold cycle pump, Centre tap after heated R245fa out returns to the porch of intermediate extraction superheater；Described high-temperature evaporator and low temperature steam Sending out device to be integrally provided in the heat exchange housing of drum type brake, heat exchange housing is formed by bolt fastening by procapsid and back casing, fore shell The length of body is identical with the horizontal length of screen formula heat exchanger tube, and the length of back casing is identical with the horizontal length of spiral heat exchange tube；Described Being provided with multiple vibrator on screen formula heat exchanger tube, vibrator is powered by accumulator battery；The bottom of described procapsid is curved, at arc It is additionally provided with sewage draining exit at minimum point bottom shape, discharges the dirt fallen that shakes on screen formula heat exchanger tube for periodically；

Shaft coupling is passed through coaxially connected between low temperature multistage decompressor and high temperature multistage expansion turbine, at the system start-up initial stage, low R245fa in temperature heat-exchanging loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop, and first low temperature multistage decompressor starts, Drive high temperature multistage expansion turbine low speed to rotate in advance by shaft coupling simultaneously, play the startup reducing high temperature multistage expansion turbine Pressure, shortens the effect of startup time；When system stops, the first coasting operation of high temperature multistage expansion turbine is slowed down, and passes through simultaneously Shaft coupling drives low temperature multistage decompressor to slow down, and to reduce the idling time of cryogenic expansion machine, plays reduction low temperature multistage decompressor Air blast friction, prevent the effect that blade is overheated；

Also include that accumulator battery, inverter and converter, one end of high temperature multistage expansion turbine are connected with accumulator battery, electric power storage Pond group is for storing the electric energy being transformed by the kinetic energy of decompressor；Accumulator battery is connected with inverter and converter, and inverter is used In being alternating current by the DC inverter of accumulator, converter is used for driving backpressure regulation blower fan and regulating its rotating speed；Backpressure regulation Blower fan is for lowering and control the back pressure of electromotor, and during operation, the pressure at expulsion feedback by detecting regulates backpressure regulation blower fan Rotating speed thus regulate back pressure in optimum.

Preferably, described low temperature multistage decompressor and high temperature multistage expansion turbine are respectively by high temperature inlet valve and low temperature air inlet valve Regulating respective throttle flow, the high temperature inlet valve of employing and the stability of flow district of low temperature air inlet valve are 30%～100% metered flow, When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow are more than 30% respective metered flow, high temperature inlet valve or low temperature enter vapour Valve keeps standard-sized sheet to avoid restriction loss, changes going out of decompressor by the rotating speed of regulation high temperature circulation pump or cold cycle pump Power；When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow are less than 30% respective metered flow, holding high temperature circulation pump or The rotating speed of cold cycle pump is constant, regulates exerting oneself of decompressor by the aperture controlling high temperature inlet valve or low temperature inlet valve.

The beneficial effect of this air filtering system: simple and practical, air filtration is effective, and mobility is strong, and energy can secondary Utilize, energy-conserving and environment-protective；Devise the off gas energy recovery system of electromotor, according to the heat recovery demand of different temperatures section and The evaporating temperature of medium and the difference of heat transfer characteristic, at the circulatory mediator that high temperature section is different with low-temperature zone employing, thus on the whole Improve the heat exchange efficiency of system；Start by cold cycle pump centre tap relatively low for pressure being led to the cooling of backwater vaporizer The backwater of machine cooling water, it is possible to reclaim the heat of cooling water at recovery motor exhaust used heat simultaneously, and energy-saving effect is obvious； Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency；Logical Cross and part recovered energy for by inverter and transducer drive backpressure regulation blower fan, and according to the feedback of exhaust back pressure The rotating speed of regulation backpressure regulation blower fan, by backpressure regulation and energy regenerating integration while realizing without driven by external power blower fan, It is greatly saved investment and space hold；The intergrade utilizing high temperature multistage expansion turbine is drawn gas, and drawing gas of this part exists Through one section of expansion process in high temperature multistage expansion turbine, before utilizing its remaining heat to heat entrance low temperature multistage decompressor Medium R245fa, on the one hand can ensure that effective vaporization of R245fa, on the other hand can improve the acting in low-temperature expansion loop Efficiency, it is to avoid cold source energy, thus improve the whole efficiency of energy recycle device；Low temperature multistage decompressor and high temperature multistage turbine Shaft coupling is passed through coaxially connected, at the initial stage of system start-up, owing to exhaust temperature is relatively low, in low-temperature heat exchange loop between decompressor R245fa prior in high temperature heat-exchanging loop water arrive vapourizing temperature, first low temperature multistage decompressor starts, and passes through shaft coupling simultaneously Device drives high temperature multistage expansion turbine low speed to rotate in advance, so can effectively reduce the startup pressure of high temperature multistage expansion turbine, Shortening the startup time, when system stops, the first coasting operation of high temperature multistage expansion turbine is slowed down, and is driven low by shaft coupling simultaneously Temperature multiple expansion engine slows down, to reduce the idling time of cryogenic expansion machine, due to the medium temperature in decompressor in stopped process also The highest, now primarily serve the air blast friction reducing low temperature multistage decompressor, prevent the effect that blade is overheated；According to different Inlet valve control characteristic and the consideration of restriction loss under flow rate working conditions, devise a kind of rotating speed and control mode that inlet valve combines, The stability of regulation is maintained while reducing restriction loss.

Accompanying drawing explanation

The invention will be further described to utilize accompanying drawing, but the embodiment in accompanying drawing does not constitute any limitation of the invention, for Those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtains the attached of other according to the following drawings Figure.

Fig. 1 is the overall structure schematic diagram of this air filtering system；

Fig. 2 is the structural representation of this energy-recuperation system；

Fig. 3 is the side view of high-temperature evaporator and cryogenic vaporizer；

Fig. 4 is the front view of high-temperature evaporator and cryogenic vaporizer.

Reference: radiator-1；Electromotor-2；Warm condenser-3；Low-temperature condenser-4；High-temperature evaporator-5；Low temperature steams Send out device-6；High temperature multistage expansion turbine-7；Low temperature multistage decompressor-8；Backwater vaporizer-9；High temperature circulation pump-10；Low temperature Circulating pump-11；Intermediate extraction superheater-12；Accumulator battery-13；Backpressure regulation blower fan-14；Inverter and converter-15；Regulation Valve-16；Screen formula heat exchanger tube-17；Spiral heat exchange tube-18；Shaft coupling-19；Procapsid-20；Back casing-21；Bolt-22；Blowdown Mouth-23；Air exhauster-24；Active carbon filtering device-25；Titanium oxide decomposition apparatus-26；Ultraviolet light sterilizing device-27.

Detailed description of the invention

The invention will be further described with the following Examples.

Embodiment 1:

The air filtering system of a kind of high-energy utilization rate as shown in Figure 1, its entirety is formed by automobile improvement, by electromotor 2 Drive, including air exhauster 24, active carbon filtering device 25, titanium oxide decomposition apparatus 26, ultraviolet light sterilizing device 27 with start Machine energy recycle device, indoor air is extracted and sequentially passes through out active carbon filtering device 25 by air exhauster 24, titanium oxide is degraded After device 26 and ultraviolet light sterilizing device 27 process, again send indoor back to.

As in figure 2 it is shown, engine power retracting device is for reclaiming the energy of electromotor 2 tail gas, it includes radiator 1, sends out Motivation 2, backwater vaporizer 9, high temperature heat-exchanging loop, low-temperature heat exchange loop, accumulator battery 13, inverter and converter 15 and Backpressure regulation blower fan 14.Radiator 1 is connected with electromotor 2, and radiator 1 leads to supercooled water to be transferred to the heat of electromotor 2 On radiator 1, and by the surface radiating of radiator 1.The tail gas of electromotor 2 sequentially passes through backpressure regulation blower fan 14, height Air is discharged after temperature vaporizer 5, cryogenic vaporizer 6 cooling.

High temperature circulation pump 10 that high temperature heat-exchanging loop includes being sequentially connected, high-temperature evaporator 5, high temperature multistage expansion turbine 7 and Warm condenser 3, in high temperature heat-exchanging loop, the medium of flowing is water, after high-temperature evaporator 5 is arranged on backpressure regulation blower fan 14 On high-temperature tail gas pipeline, in order to cold in the WATER AS FLOW MEDIUM of warm condenser 3 cooling is squeezed into high-temperature evaporator 5 by high temperature circulation pump 10 But the tail gas of high-temperature tail gas section, the WATER AS FLOW MEDIUM after heating then passes through high temperature multistage expansion turbine 7 and does work, converts heat energy into The mechanical energy of high temperature multistage expansion turbine 7.

Cold cycle pump 11 that low-temperature heat exchange loop includes being sequentially connected, cryogenic vaporizer 6, intermediate extraction superheater 12, low temperature Multiple expansion engine 8 and low-temperature condenser 4, in low-temperature heat exchange loop, the medium of flowing is R245fa, and cryogenic vaporizer 6 is arranged on To reclaim the heat of tail gas further on low temperature exhaust gas pipeline after high-temperature evaporator 5, through Jie of low-temperature condenser 6 cooling Matter R245fa is squeezed in cryogenic vaporizer 6 by cold cycle pump 11, and the WATER AS FLOW MEDIUM after heating is after intermediate extraction superheater 12 Do work through low temperature multistage decompressor 8, convert heat energy into the mechanical energy of low temperature multistage decompressor 8.Inventor it has been investigated that, In energy recycle device, use water as medium and as the effect of medium and differ with R245fa, evaporation of water temperature Evaporating temperature than R245fa exceeds much, is therefore suitable in the tail gas section of high temperature using；And make in the tail gas section of low temperature With R245fa as medium, it is more beneficial for its evaporation acting.It addition, this under the conditions of different pressure and temperatures by both Medium is used in combination, and the most also can improve the heat exchange efficiency of system.Intermediate extraction superheater 12 is pipe heat exchanger, heating Thermal source draws gas from the intergrade of high temperature multistage expansion turbine 7, drawing gas at high temperature multistage expansion turbine 7 of this part Middle through one section of expansion process, utilize its remaining heat to heat the medium R245fa before entering low temperature multistage decompressor 8, one Aspect can ensure that effective vaporization of R245fa, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid low-temperature receiver damages Lose, thus improve the whole efficiency of energy recycle device.The concrete progression that draws gas can be according to the different operating modes in two decompressors Scope determines.Also include regulating valve 16, regulation valve 16 according to the R245fa Temperature Feedback after intermediate extraction superheater 12 and Pressure feedback in high temperature multistage expansion turbine 7, for regulating the flow that intergrade is drawn gas, when after intermediate extraction superheater 12 R245fa Temperature Feedback value more than or less than set intermediate extraction superheater 12 after R245fa temperature value time, automatically close Little or open the big aperture regulating valve 16, simultaneously when the pressure feedback value in high temperature multistage expansion turbine 7 is less than the high temperature set During pressure atresia value in multistage expansion turbine 7, automatic blocking regulation valve 16 opens greatly (i.e. forbidding that it continues out greatly), in case Stop exerting oneself of high temperature multistage expansion turbine 7 too low, the R245fa temperature value after the intermediate extraction superheater 12 of setting and setting High temperature multistage expansion turbine 7 in pressure atresia value according to different concrete conditions by experiment method be manually set, add Intergrade after heat is drawn gas and is back to high temperature recuperated cycle loop (not shown).In this embodiment, high-temperature evaporator 5 is taken And 3/4 that distance L between cryogenic vaporizer 6 is exhaust pipe road overall length, high temperature multistage expansion turbine 7 be 3 grades swollen Swollen machine, intergrade is drawn gas and is taken from the 2nd grade of high temperature multistage expansion turbine.

As shown in Figure 3,4, it is contemplated that the impurity in tail gas be not easy to after more how long using cleaning is susceptible to blocking, and Take into account heat exchange efficiency, high-temperature evaporator 5 and cryogenic vaporizer 6 and all use the new structure of screen formula-spiral heat exchange tube, at tail gas Inlet side, use the screen formula heat exchanger tube 17 that is staggered in arrangement, the most most tail gas impurity is blocked in screen formula heat exchanger tube 17 On, during cleaning easily, it is staggered in arrangement the flow resistance that also can effectively reduce tail gas simultaneously；And use spiral heat exchange in the second half section Pipe 18, to strengthen flow perturbation raising heat exchange efficiency.The cooling source of warm condenser 3 and low-temperature condenser 4 can take from air-conditioning Cold-producing medium, it is also possible to take from other low-temperature receiver, because the after-heat of this part is seldom, as long as can meet heat-exchanging loop In medium be re-cooled to liquid and prevent high temperature circulation pump 10 and cold cycle pump 11 from vaporizing.Described high-temperature evaporator 5 Being integrally provided in the heat exchange housing of drum type brake with cryogenic vaporizer 6, heat exchange housing is passed through spiral shell by procapsid 20 and back casing 21 Bolt 22 fastens and forms, and the length of procapsid 20 is identical with the horizontal length of screen formula heat exchanger tube 17, the length of back casing 21 and spiral shell The horizontal length of rotation heat exchanger tube 18 is identical；It is provided with multiple vibrator (not shown), rapping on described screen formula heat exchanger tube 17 Device is powered by accumulator battery 13；The bottom of described procapsid 20 is curved, is additionally provided with blowdown at the minimum point of curved bottom Mouth 23, discharges the dirt fallen that shakes on screen formula heat exchanger tube 17 for periodically.

Electromotor 2 to the CWR road of radiator 1 is additionally provided with backwater vaporizer 9, is used for reclaiming electromotor cold But the heat of water backwater, its cooling source takes from the centre tap of cold cycle pump 11, heated after centre tap out R245fa returns to the porch of intermediate extraction superheater 12.The centre tap of cold cycle pump 11 relatively low for pressure is led to back The backwater of water evaporimeter cooling engine cooling water, on the one hand can reclaim the heat of cooling water backwater well, on the other hand compare Individually set up a circulation or have the most energy-conservation from the outlet extraction cooling medium of cold cycle pump 11 and high temperature circulation pump 10 Effect.

Shaft coupling 19 is passed through coaxially connected, in system start-up between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7 At the initial stage, owing to exhaust temperature is relatively low, the R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop, First low temperature multistage decompressor 8 starts, and drives high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, this Sample can effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shortens the startup time, due to now high temperature multistage turbine Medium temperature in decompressor 7 is the lowest, and the length of blade of high temperature multistage expansion turbine 7 is compared with the leaf of low temperature multiple expansion engine 8 Leaf length is little, and the air blast friction of blade is the least, almost can consider；When system stops, high temperature multistage expansion turbine 7 first coasting operation are slowed down, and drive low temperature multistage decompressor 8 to slow down, to reduce the lazy of cryogenic expansion machine 8 by shaft coupling 19 simultaneously Walk the time, owing to the medium temperature in decompressor in stopped process is the highest, now primarily serve reduction low temperature multistage decompressor The air blast friction of 8, prevents the effect that blade is overheated.

One end of high temperature multistage expansion turbine 7 is connected with accumulator battery 13, and accumulator battery 13 is for storing by decompressor kinetic energy The electric energy being transformed.The technology of the electric energy of accumulator is converted energy into about decompressor, owing to prior art is the most ripe, Do not repeat them here.Accumulator battery 13 is connected with inverter and converter 15, and inverter is for by the DC inverter of accumulator For alternating current, converter is used for driving backpressure regulation blower fan 14 and regulating its rotating speed.The energy-recuperation system impact on electromotor 2 The exhaust back pressure of electromotor 2 can be made to raise when essentially consisting in engine exhaust by heater in system, and exhaust back pressure rising Power consumption when can cause engine piston that waste gas is released cylinder increases, and therefore arranging backpressure regulation blower fan 14 can effectively lower also And the back pressure of control electromotor 2, during operation, regulated the rotating speed of backpressure regulation blower fan 14 by the pressure at expulsion feedback detected Thus regulating back pressure in optimum, the most this energy utilizing accumulator battery 13 itself is to outside driving the mode of blower fan need not The advantage of the power supply come.

Low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7 are respectively by high temperature inlet valve and low temperature air inlet valve (in figure not Illustrate) regulate respective throttle flow.The high temperature inlet valve used and the stability of flow district of low temperature air inlet valve are 30%～100% volume Constant flow, either low-temperature heat exchange loop or high temperature heat-exchanging loop, the control of pump and the control of decompressor, first pass through pump and adjust The flow of joint working medium, it is achieved to working medium control of temperature at expander inlet, decompressor must be made when flow changes Corresponding adjustment mates flow, if the operation of decompressor is not mated with flow, not only can not maintain stable evaporating pressure, The operation of decompressor also cannot keep stable, simultaneously according to high temperature inlet valve and the characteristic of low temperature inlet valve, use pressure regulation and Speed regulates the control mode matched: when high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow are more than 30% respective specified stream During amount, high temperature inlet valve or low temperature inlet valve holding standard-sized sheet are to avoid restriction loss, by regulation high temperature circulation pump 10 or low temperature The rotating speed of circulating pump 11 changes exerting oneself of decompressor；When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow are each less than 30% When metered flow, owing to the control characteristic of inlet valve during low discharge is unstable, keep high temperature circulation pump 10 or cold cycle pump 11 rotating speeds are constant, regulate exerting oneself of decompressor by the aperture controlling high temperature inlet valve or low temperature inlet valve.

In the air filtering system of this embodiment, simple and practical, air filtration is effective, and mobility is strong, and energy can two Secondary utilization, energy-conserving and environment-protective；Devise the exhaust gas recovery system of electromotor, according to heat recovery demand and Jie of different temperatures section The evaporating temperature of matter and the difference of heat transfer characteristic, use different circulatory mediators in high temperature section with low-temperature zone, thus carry on the whole The high heat exchange efficiency of system；Start by cold cycle pump centre tap relatively low for pressure being led to backwater vaporizer 9 cooling The backwater of machine cooling water, it is possible to reclaim the heat of cooling water at recovery motor exhaust used heat simultaneously, and energy-saving effect is obvious； Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency；Logical Cross recovering energy part for driving backpressure regulation blower fan 14 by inverter and converter 15, and according to exhaust back pressure The rotating speed of feedback regulation backpressure regulation blower fan 14, while realizing without driven by external power blower fan, backpressure regulation and energy are returned Receive integration, be greatly saved investment and space hold；The intergrade utilizing high temperature multistage expansion turbine 7 is drawn gas, this part Draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, utilize its remaining heat heat entrance low Medium R245fa before temperature multiple expansion engine 8, on the one hand can ensure that effective vaporization of R245fa, on the other hand can improve low The mechanical efficiency of temperature expansion circuit, it is to avoid cold source energy, thus improve the whole efficiency of energy recycle device；Low temperature multistage expands Shaft coupling 19 is passed through coaxially connected, at the initial stage of system start-up, due to tail gas temperature between machine 8 and high temperature multistage expansion turbine 7 Spending relatively low, the R245fa in low-temperature heat exchange loop arrives vapourizing temperature, low temperature multistage decompressor prior to the water in high temperature heat-exchanging loop First start, drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, so can effectively reduce height The startup pressure of temperature multistage expansion turbine 7, shortens the startup time, and when system stops, high temperature multistage expansion turbine 7 is first First coasting operation is slowed down, and drives low temperature multistage decompressor 8 to slow down by shaft coupling 19 simultaneously, during to reduce the coasting operation of cryogenic expansion machine 8 Between, owing to the medium temperature in decompressor in stopped process is the highest, now primarily serve and reduce low temperature multistage decompressor 8 Air blast rubs, and prevents the effect that blade is overheated；According to inlet valve control characteristic under different flow rate working conditions and the consideration of restriction loss, Devise a kind of rotating speed and control mode that inlet valve combines, while reducing restriction loss, maintain the stability of regulation. Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is the 3/4 of exhaust pipe road overall length, and high temperature multistage turbine expands Machine 7 is 3 grades of decompressors, and intergrade is drawn gas and taken from the 2nd grade of high temperature multistage expansion turbine 7, and heat recovery efficiency improves 4%, achieve beyond thought effect.

Embodiment 2:

As in figure 2 it is shown, engine power retracting device is for reclaiming the energy of motor exhaust, it includes radiator 1, starts Machine 2, backwater vaporizer 9, high temperature heat-exchanging loop, low-temperature heat exchange loop, accumulator battery 13, inverter and converter 15 and the back of the body Pressure regulation blower fan 14.Radiator 1 is connected with electromotor 2, and radiator 1 leads to supercooled water to be transferred to dissipate by the heat of electromotor 2 On hot device 1, and by the surface radiating of radiator 1.The tail gas of electromotor 2 sequentially passes through backpressure regulation blower fan 14, high temperature Air is discharged after the cooling of vaporizer 5, cryogenic vaporizer 6.

Cold cycle pump 11 that low-temperature heat exchange loop includes being sequentially connected, cryogenic vaporizer 6, intermediate extraction superheater 12, low temperature Multiple expansion engine 8 and low-temperature condenser 4, in low-temperature heat exchange loop, the medium of flowing is R245fa, and cryogenic vaporizer 6 is arranged on To reclaim the heat of tail gas further on low temperature exhaust gas pipeline after high-temperature evaporator 5, through Jie of low-temperature condenser 6 cooling Matter R245fa is squeezed in cryogenic vaporizer 6 by cold cycle pump 11, and the WATER AS FLOW MEDIUM after heating is after intermediate extraction superheater 12 Do work through low temperature multistage decompressor 8, convert heat energy into the mechanical energy of low temperature multistage decompressor 8.Inventor it has been investigated that, In energy recycle device, use water as medium and as the effect of medium and differ with R245fa, evaporation of water temperature Evaporating temperature than R245fa exceeds much, is therefore suitable in the tail gas section of high temperature using；And make in the tail gas section of low temperature With R245fa as medium, it is more beneficial for its evaporation acting.It addition, this under the conditions of different pressure and temperatures by both Medium is used in combination, and the most also can improve the heat exchange efficiency of system.Intermediate extraction superheater 12 is pipe heat exchanger, heating Thermal source draws gas from the intergrade of high temperature multistage expansion turbine 7, drawing gas at high temperature multistage expansion turbine 7 of this part Middle through one section of expansion process, utilize its remaining heat to heat the medium R245fa before entering low temperature multistage decompressor 8, one Aspect can ensure that effective vaporization of R245fa, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid low-temperature receiver damages Lose, thus improve the whole efficiency of energy recycle device.The concrete progression that draws gas can be according to the different operating modes in two decompressors Scope determines.Also include regulating valve 16, regulation valve 16 according to the R245fa Temperature Feedback after intermediate extraction superheater 12 and Pressure feedback in high temperature multistage expansion turbine 7, for regulating the flow that intergrade is drawn gas, when after intermediate extraction superheater 12 R245fa Temperature Feedback value more than or less than set intermediate extraction superheater 12 after R245fa temperature value time, automatically close Little or open the big aperture regulating valve 16, simultaneously when the pressure feedback value in high temperature multistage expansion turbine 7 is less than the high temperature set During pressure atresia value in multistage expansion turbine 7, automatic blocking regulation valve 16 opens greatly (i.e. forbidding that it continues out greatly), in case Stop exerting oneself of high temperature multistage expansion turbine 7 too low, the R245fa temperature value after the intermediate extraction superheater 12 of setting and setting High temperature multistage expansion turbine 7 in pressure atresia value according to different concrete conditions by experiment method be manually set, add Intergrade after heat is drawn gas and is back to high temperature recuperated cycle loop (not shown).In this embodiment, high-temperature evaporator 5 is taken And 2/3 that distance L between cryogenic vaporizer 6 is exhaust pipe road overall length, high temperature multistage expansion turbine 7 be 4 grades swollen Swollen machine, intergrade is drawn gas and is taken from the 2nd grade of high temperature multistage expansion turbine.

In the air filtering system of this embodiment, simple and practical, air filtration is effective, and mobility is strong, and energy can two Secondary utilization, energy-conserving and environment-protective；Devise the exhaust gas recovery system of electromotor, according to heat recovery demand and Jie of different temperatures section The evaporating temperature of matter and the difference of heat transfer characteristic, use different circulatory mediators in high temperature section with low-temperature zone, thus carry on the whole The high heat exchange efficiency of system；Start by cold cycle pump centre tap relatively low for pressure being led to backwater vaporizer 9 cooling The backwater of machine cooling water, it is possible to reclaim the heat of cooling water at recovery motor exhaust used heat simultaneously, and energy-saving effect is obvious； Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency；Logical Cross recovering energy part for driving backpressure regulation blower fan 14 by inverter and converter 15, and according to exhaust back pressure The rotating speed of feedback regulation backpressure regulation blower fan 14, while realizing without driven by external power blower fan, backpressure regulation and energy are returned Receive integration, be greatly saved investment and space hold；The intergrade utilizing high temperature multistage expansion turbine 7 is drawn gas, this part Draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, utilize its remaining heat heat entrance low Medium R245fa before temperature multiple expansion engine 8, on the one hand can ensure that effective vaporization of R245fa, on the other hand can improve low The mechanical efficiency of temperature expansion circuit, it is to avoid cold source energy, thus improve the whole efficiency of energy recycle device；Low temperature multistage expands Shaft coupling 19 is passed through coaxially connected, at the initial stage of system start-up, due to tail gas temperature between machine 8 and high temperature multistage expansion turbine 7 Spending relatively low, the R245fa in low-temperature heat exchange loop arrives vapourizing temperature, low temperature multistage decompressor prior to the water in high temperature heat-exchanging loop First start, drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, so can effectively reduce height The startup pressure of temperature multistage expansion turbine 7, shortens the startup time, and when system stops, high temperature multistage expansion turbine 7 is first First coasting operation is slowed down, and drives low temperature multistage decompressor 8 to slow down by shaft coupling 19 simultaneously, during to reduce the coasting operation of cryogenic expansion machine 8 Between, owing to the medium temperature in decompressor in stopped process is the highest, now primarily serve and reduce low temperature multistage decompressor 8 Air blast rubs, and prevents the effect that blade is overheated；According to inlet valve control characteristic under different flow rate working conditions and the consideration of restriction loss, Devise a kind of rotating speed and control mode that inlet valve combines, while reducing restriction loss, maintain the stability of regulation. Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is the 2/3 of exhaust pipe road overall length, and high temperature multistage turbine expands Machine 7 is 4 grades of decompressors, and intergrade is drawn gas and taken from the 2nd grade of high temperature multistage expansion turbine 7, and heat recovery efficiency improves 4.5%, achieve beyond thought effect.

Embodiment 3:

Cold cycle pump 11 that low-temperature heat exchange loop includes being sequentially connected, cryogenic vaporizer 6, intermediate extraction superheater 12, low temperature Multiple expansion engine 8 and low-temperature condenser 4, in low-temperature heat exchange loop, the medium of flowing is R245fa, and cryogenic vaporizer 6 is arranged on To reclaim the heat of tail gas further on low temperature exhaust gas pipeline after high-temperature evaporator 5, through Jie of low-temperature condenser 6 cooling Matter R245fa is squeezed in cryogenic vaporizer 6 by cold cycle pump 11, and the WATER AS FLOW MEDIUM after heating is after intermediate extraction superheater 12 Do work through low temperature multistage decompressor 8, convert heat energy into the mechanical energy of low temperature multistage decompressor 8.Inventor it has been investigated that, In energy recycle device, use water as medium and as the effect of medium and differ with R245fa, evaporation of water temperature Evaporating temperature than R245fa exceeds much, is therefore suitable in the tail gas section of high temperature using；And make in the tail gas section of low temperature With R245fa as medium, it is more beneficial for its evaporation acting.It addition, this under the conditions of different pressure and temperatures by both Medium is used in combination, and the most also can improve the heat exchange efficiency of system.Intermediate extraction superheater 12 is pipe heat exchanger, heating Thermal source draws gas from the intergrade of high temperature multistage expansion turbine 7, drawing gas at high temperature multistage expansion turbine 7 of this part Middle through one section of expansion process, utilize its remaining heat to heat the medium R245fa before entering low temperature multistage decompressor 8, one Aspect can ensure that effective vaporization of R245fa, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid low-temperature receiver damages Lose, thus improve the whole efficiency of energy recycle device.The concrete progression that draws gas can be according to the different operating modes in two decompressors Scope determines.Also include regulating valve 16, regulation valve 16 according to the R245fa Temperature Feedback after intermediate extraction superheater 12 and Pressure feedback in high temperature multistage expansion turbine 7, for regulating the flow that intergrade is drawn gas, when after intermediate extraction superheater 12 R245fa Temperature Feedback value more than or less than set intermediate extraction superheater 12 after R245fa temperature value time, automatically close Little or open the big aperture regulating valve 16, simultaneously when the pressure feedback value in high temperature multistage expansion turbine 7 is less than the high temperature set During pressure atresia value in multistage expansion turbine 7, automatic blocking regulation valve 16 opens greatly (i.e. forbidding that it continues out greatly), in case Stop exerting oneself of high temperature multistage expansion turbine 7 too low, the R245fa temperature value after the intermediate extraction superheater 12 of setting and setting High temperature multistage expansion turbine 7 in pressure atresia value according to different concrete conditions by experiment method be manually set, add Intergrade after heat is drawn gas and is back to high temperature recuperated cycle loop (not shown).In this embodiment, high-temperature evaporator 5 is taken And 1/2 that distance L between cryogenic vaporizer 6 is exhaust pipe road overall length, high temperature multistage expansion turbine 7 be 5 grades swollen Swollen machine, intergrade is drawn gas and is taken from the 3rd level of high temperature multistage expansion turbine.

In the air filtering system of this embodiment, simple and practical, air filtration is effective, and mobility is strong, and energy can two Secondary utilization, energy-conserving and environment-protective；Devise the exhaust gas recovery system of electromotor, according to heat recovery demand and Jie of different temperatures section The evaporating temperature of matter and the difference of heat transfer characteristic, use different circulatory mediators in high temperature section with low-temperature zone, thus carry on the whole The high heat exchange efficiency of system；Start by cold cycle pump centre tap relatively low for pressure being led to backwater vaporizer 9 cooling The backwater of machine cooling water, it is possible to reclaim the heat of cooling water at recovery motor exhaust used heat simultaneously, and energy-saving effect is obvious； Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency；Logical Cross recovering energy part for driving backpressure regulation blower fan 14 by inverter and converter 15, and according to exhaust back pressure The rotating speed of feedback regulation backpressure regulation blower fan 14, while realizing without driven by external power blower fan, backpressure regulation and energy are returned Receive integration, be greatly saved investment and space hold；The intergrade utilizing high temperature multistage expansion turbine 7 is drawn gas, this part Draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, utilize its remaining heat heat entrance low Medium R245fa before temperature multiple expansion engine 8, on the one hand can ensure that effective vaporization of R245fa, on the other hand can improve low The mechanical efficiency of temperature expansion circuit, it is to avoid cold source energy, thus improve the whole efficiency of energy recycle device；Low temperature multistage expands Shaft coupling 19 is passed through coaxially connected, at the initial stage of system start-up, due to tail gas temperature between machine 8 and high temperature multistage expansion turbine 7 Spending relatively low, the R245fa in low-temperature heat exchange loop arrives vapourizing temperature, low temperature multistage decompressor prior to the water in high temperature heat-exchanging loop First start, drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, so can effectively reduce height The startup pressure of temperature multistage expansion turbine 7, shortens the startup time, and when system stops, high temperature multistage expansion turbine 7 is first First coasting operation is slowed down, and drives low temperature multistage decompressor 8 to slow down by shaft coupling 19 simultaneously, during to reduce the coasting operation of cryogenic expansion machine 8 Between, owing to the medium temperature in decompressor in stopped process is the highest, now primarily serve and reduce low temperature multistage decompressor 8 Air blast rubs, and prevents the effect that blade is overheated；According to inlet valve control characteristic under different flow rate working conditions and the consideration of restriction loss, Devise a kind of rotating speed and control mode that inlet valve combines, while reducing restriction loss, maintain the stability of regulation. Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is the 1/2 of exhaust pipe road overall length, and high temperature multistage turbine expands Machine 7 is 5 grades of decompressors, and intergrade is drawn gas and taken from the 3rd level of high temperature multistage expansion turbine 7, and heat recovery efficiency improves 5%, achieve beyond thought effect.

Embodiment 4:

Cold cycle pump 11 that low-temperature heat exchange loop includes being sequentially connected, cryogenic vaporizer 6, intermediate extraction superheater 12, low temperature Multiple expansion engine 8 and low-temperature condenser 4, in low-temperature heat exchange loop, the medium of flowing is R245fa, and cryogenic vaporizer 6 is arranged on To reclaim the heat of tail gas further on low temperature exhaust gas pipeline after high-temperature evaporator 5, through Jie of low-temperature condenser 6 cooling Matter R245fa is squeezed in cryogenic vaporizer 6 by cold cycle pump 11, and the WATER AS FLOW MEDIUM after heating is after intermediate extraction superheater 12 Do work through low temperature multistage decompressor 8, convert heat energy into the mechanical energy of low temperature multistage decompressor 8.Inventor it has been investigated that, In energy recycle device, use water as medium and as the effect of medium and differ with R245fa, evaporation of water temperature Evaporating temperature than R245fa exceeds much, is therefore suitable in the tail gas section of high temperature using；And make in the tail gas section of low temperature With R245fa as medium, it is more beneficial for its evaporation acting.It addition, this under the conditions of different pressure and temperatures by both Medium is used in combination, and the most also can improve the heat exchange efficiency of system.Intermediate extraction superheater 12 is pipe heat exchanger, heating Thermal source draws gas from the intergrade of high temperature multistage expansion turbine 7, drawing gas at high temperature multistage expansion turbine 7 of this part Middle through one section of expansion process, utilize its remaining heat to heat the medium R245fa before entering low temperature multistage decompressor 8, one Aspect can ensure that effective vaporization of R245fa, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid low-temperature receiver damages Lose, thus improve the whole efficiency of energy recycle device.The concrete progression that draws gas can be according to the different operating modes in two decompressors Scope determines.Also include regulating valve 16, regulation valve 16 according to the R245fa Temperature Feedback after intermediate extraction superheater 12 and Pressure feedback in high temperature multistage expansion turbine 7, for regulating the flow that intergrade is drawn gas, when after intermediate extraction superheater 12 R245fa Temperature Feedback value more than or less than set intermediate extraction superheater 12 after R245fa temperature value time, automatically close Little or open the big aperture regulating valve 16, simultaneously when the pressure feedback value in high temperature multistage expansion turbine 7 is less than the high temperature set During pressure atresia value in multistage expansion turbine 7, automatic blocking regulation valve 16 opens greatly (i.e. forbidding that it continues out greatly), in case Stop exerting oneself of high temperature multistage expansion turbine 7 too low, the R245fa temperature value after the intermediate extraction superheater 12 of setting and setting High temperature multistage expansion turbine 7 in pressure atresia value according to different concrete conditions by experiment method be manually set, add Intergrade after heat is drawn gas and is back to high temperature recuperated cycle loop (not shown).In this embodiment, high-temperature evaporator 5 is taken And 2/5 that distance L between cryogenic vaporizer 6 is exhaust pipe road overall length, high temperature multistage expansion turbine 7 be 5 grades swollen Swollen machine, intergrade is drawn gas and is taken from the 2nd grade of high temperature multistage expansion turbine.

In the air filtering system of this embodiment, simple and practical, air filtration is effective, and mobility is strong, and energy can two Secondary utilization, energy-conserving and environment-protective；Devise the exhaust gas recovery system of electromotor, according to heat recovery demand and Jie of different temperatures section The evaporating temperature of matter and the difference of heat transfer characteristic, use different circulatory mediators in high temperature section with low-temperature zone, thus carry on the whole The high heat exchange efficiency of system；Start by cold cycle pump centre tap relatively low for pressure being led to backwater vaporizer 9 cooling The backwater of machine cooling water, it is possible to reclaim the heat of cooling water at recovery motor exhaust used heat simultaneously, and energy-saving effect is obvious； Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency；Logical Cross recovering energy part for driving backpressure regulation blower fan 14 by inverter and converter 15, and according to exhaust back pressure The rotating speed of feedback regulation backpressure regulation blower fan 14, while realizing without driven by external power blower fan, backpressure regulation and energy are returned Receive integration, be greatly saved investment and space hold；The intergrade utilizing high temperature multistage expansion turbine 7 is drawn gas, this part Draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, utilize its remaining heat heat entrance low Medium R245fa before temperature multiple expansion engine 8, on the one hand can ensure that effective vaporization of R245fa, on the other hand can improve low The mechanical efficiency of temperature expansion circuit, it is to avoid cold source energy, thus improve the whole efficiency of energy recycle device；Low temperature multistage expands Shaft coupling 19 is passed through coaxially connected, at the initial stage of system start-up, due to tail gas temperature between machine 8 and high temperature multistage expansion turbine 7 Spending relatively low, the R245fa in low-temperature heat exchange loop arrives vapourizing temperature, low temperature multistage decompressor prior to the water in high temperature heat-exchanging loop First start, drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, so can effectively reduce height The startup pressure of temperature multistage expansion turbine 7, shortens the startup time, and when system stops, high temperature multistage expansion turbine 7 is first First coasting operation is slowed down, and drives low temperature multistage decompressor 8 to slow down by shaft coupling 19 simultaneously, during to reduce the coasting operation of cryogenic expansion machine 8 Between, owing to the medium temperature in decompressor in stopped process is the highest, now primarily serve and reduce low temperature multistage decompressor 8 Air blast rubs, and prevents the effect that blade is overheated；According to inlet valve control characteristic under different flow rate working conditions and the consideration of restriction loss, Devise a kind of rotating speed and control mode that inlet valve combines, while reducing restriction loss, maintain the stability of regulation. Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is the 2/5 of exhaust pipe road overall length, and high temperature multistage turbine expands Machine 7 is 5 grades of decompressors, and intergrade is drawn gas and taken from the 2nd grade of high temperature multistage expansion turbine 7, and heat recovery efficiency improves 5.5%, achieve beyond thought effect.

Embodiment 5:

Cold cycle pump 11 that low-temperature heat exchange loop includes being sequentially connected, cryogenic vaporizer 6, intermediate extraction superheater 12, low temperature Multiple expansion engine 8 and low-temperature condenser 4, in low-temperature heat exchange loop, the medium of flowing is R245fa, and cryogenic vaporizer 6 is arranged on To reclaim the heat of tail gas further on low temperature exhaust gas pipeline after high-temperature evaporator 5, through Jie of low-temperature condenser 6 cooling Matter R245fa is squeezed in cryogenic vaporizer 6 by cold cycle pump 11, and the WATER AS FLOW MEDIUM after heating is after intermediate extraction superheater 12 Do work through low temperature multistage decompressor 8, convert heat energy into the mechanical energy of low temperature multistage decompressor 8.Inventor it has been investigated that, In energy recycle device, use water as medium and as the effect of medium and differ with R245fa, evaporation of water temperature Evaporating temperature than R245fa exceeds much, is therefore suitable in the tail gas section of high temperature using；And make in the tail gas section of low temperature With R245fa as medium, it is more beneficial for its evaporation acting.It addition, this under the conditions of different pressure and temperatures by both Medium is used in combination, and the most also can improve the heat exchange efficiency of system.Intermediate extraction superheater 12 is pipe heat exchanger, heating Thermal source draws gas from the intergrade of high temperature multistage expansion turbine 7, drawing gas at high temperature multistage expansion turbine 7 of this part Middle through one section of expansion process, utilize its remaining heat to heat the medium R245fa before entering low temperature multistage decompressor 8, one Aspect can ensure that effective vaporization of R245fa, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid low-temperature receiver damages Lose, thus improve the whole efficiency of energy recycle device.The concrete progression that draws gas can be according to the different operating modes in two decompressors Scope determines.Also include regulating valve 16, regulation valve 16 according to the R245fa Temperature Feedback after intermediate extraction superheater 12 and Pressure feedback in high temperature multistage expansion turbine 7, for regulating the flow that intergrade is drawn gas, when after intermediate extraction superheater 12 R245fa Temperature Feedback value more than or less than set intermediate extraction superheater 12 after R245fa temperature value time, automatically close Little or open the big aperture regulating valve 16, simultaneously when the pressure feedback value in high temperature multistage expansion turbine 7 is less than the high temperature set During pressure atresia value in multistage expansion turbine 7, automatic blocking regulation valve 16 opens greatly (i.e. forbidding that it continues out greatly), in case Stop exerting oneself of high temperature multistage expansion turbine 7 too low, the R245fa temperature value after the intermediate extraction superheater 12 of setting and setting High temperature multistage expansion turbine 7 in pressure atresia value according to different concrete conditions by experiment method be manually set, add Intergrade after heat is drawn gas and is back to high temperature recuperated cycle loop (not shown).In this embodiment, high-temperature evaporator 5 is taken And 2/7 that distance L between cryogenic vaporizer 6 is exhaust pipe road overall length, high temperature multistage expansion turbine 7 be 6 grades swollen Swollen machine, intergrade is drawn gas and is taken from the 3rd level of high temperature multistage expansion turbine.

In the air filtering system of this embodiment, simple and practical, air filtration is effective, and mobility is strong, and energy can two Secondary utilization, energy-conserving and environment-protective；Devise the exhaust gas recovery system of electromotor, according to heat recovery demand and Jie of different temperatures section The evaporating temperature of matter and the difference of heat transfer characteristic, use different circulatory mediators in high temperature section with low-temperature zone, thus carry on the whole The high heat exchange efficiency of system；Start by cold cycle pump centre tap relatively low for pressure being led to backwater vaporizer 9 cooling The backwater of machine cooling water, it is possible to reclaim the heat of cooling water at recovery motor exhaust used heat simultaneously, and energy-saving effect is obvious； Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency；Logical Cross recovering energy part for driving backpressure regulation blower fan 14 by inverter and converter 15, and according to exhaust back pressure The rotating speed of feedback regulation backpressure regulation blower fan 14, while realizing without driven by external power blower fan, backpressure regulation and energy are returned Receive integration, be greatly saved investment and space hold；The intergrade utilizing high temperature multistage expansion turbine 7 is drawn gas, this part Draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, utilize its remaining heat heat entrance low Medium R245fa before temperature multiple expansion engine 8, on the one hand can ensure that effective vaporization of R245fa, on the other hand can improve low The mechanical efficiency of temperature expansion circuit, it is to avoid cold source energy, thus improve the whole efficiency of energy recycle device；Low temperature multistage expands Shaft coupling 19 is passed through coaxially connected, at the initial stage of system start-up, due to tail gas temperature between machine 8 and high temperature multistage expansion turbine 7 Spending relatively low, the R245fa in low-temperature heat exchange loop arrives vapourizing temperature, low temperature multistage decompressor prior to the water in high temperature heat-exchanging loop First start, drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, so can effectively reduce height The startup pressure of temperature multistage expansion turbine 7, shortens the startup time, and when system stops, high temperature multistage expansion turbine 7 is first First coasting operation is slowed down, and drives low temperature multistage decompressor 8 to slow down by shaft coupling 19 simultaneously, during to reduce the coasting operation of cryogenic expansion machine 8 Between, owing to the medium temperature in decompressor in stopped process is the highest, now primarily serve and reduce low temperature multistage decompressor 8 Air blast rubs, and prevents the effect that blade is overheated；According to inlet valve control characteristic under different flow rate working conditions and the consideration of restriction loss, Devise a kind of rotating speed and control mode that inlet valve combines, while reducing restriction loss, maintain the stability of regulation. Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is the 2/7 of exhaust pipe road overall length, and high temperature multistage turbine expands Machine 7 is 6 grades of decompressors, and intergrade is drawn gas and taken from the 3rd level of high temperature multistage expansion turbine 7, and heat recovery efficiency improves 6%, achieve beyond thought effect.

Last it should be noted that, above example is only in order to illustrate technical scheme, rather than to scope Restriction, although having made to explain to the present invention with reference to preferred embodiment, it will be understood by those within the art that, Technical scheme can be modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention.

Claims

1. an air filtering system for high-energy utilization rate, its entirety is formed by automobile improvement, it is characterized in that, electromotor drive Dynamic, reclaim dress including air exhauster, active carbon filtering device, titanium oxide decomposition apparatus, ultraviolet light sterilizing device and engine power Putting, indoor air is extracted and is sequentially passed through out active carbon filtering device, titanium oxide decomposition apparatus and uv disinfection and fills by air exhauster Put after processing, again send indoor back to；Described energy of engine's tail gas retracting device is used for reclaiming the energy of motor exhaust, It include radiator, electromotor, backwater vaporizer, high temperature heat-exchanging loop, low-temperature heat exchange loop, accumulator battery, inverter and Converter, backpressure regulation blower fan；Described radiator is connected with electromotor, and radiator leads to supercooled water to be shifted the heat of electromotor On radiator, and by the surface radiating of radiator；The tail gas of electromotor sequentially pass through backpressure regulation blower fan, high-temperature evaporator, Cryogenic vaporizer cooling heel row is to air；

The air filtering system of a kind of high-energy utilization rate the most according to claim 1, is characterized in that, described low temperature multistage Decompressor and high temperature multistage expansion turbine pass through high temperature inlet valve and the respective throttle flow of low temperature air inlet valve regulation respectively, employing The stability of flow district of high temperature inlet valve and low temperature air inlet valve is 30%～100% metered flow, when high temperature heat-exchanging loop or low-temperature heat exchange Circuit cycle flow more than 30% respective metered flow time, high temperature inlet valve or low temperature inlet valve holding standard-sized sheet to avoid restriction loss, Exerting oneself of decompressor is changed by the rotating speed of regulation high temperature circulation pump or cold cycle pump；When high temperature heat-exchanging loop or low temperature change When hot loop circular flow is less than 30% respective metered flow, the rotating speed keeping high temperature circulation pump or cold cycle pump is constant, passes through The aperture controlling high temperature inlet valve or low temperature inlet valve regulates exerting oneself of decompressor.