CN102620395B - Intelligent air conditioning unit for track vehicle - Google Patents

Intelligent air conditioning unit for track vehicle Download PDF

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Publication number
CN102620395B
CN102620395B CN201210125355.4A CN201210125355A CN102620395B CN 102620395 B CN102620395 B CN 102620395B CN 201210125355 A CN201210125355 A CN 201210125355A CN 102620395 B CN102620395 B CN 102620395B
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China
Prior art keywords
intelligent controller
less adjustment
temperature
sensor
air door
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CN201210125355.4A
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Chinese (zh)
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CN102620395A (en
Inventor
黄允东
周生存
刘学亮
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上海松芝轨道车辆空调有限公司
上海加冷松芝汽车空调股份有限公司
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Priority to CN201210125355.4A priority Critical patent/CN102620395B/en
Publication of CN102620395A publication Critical patent/CN102620395A/en
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Abstract

The invention relates to an intelligent air conditioning unit for a track vehicle. The intelligent air conditioning unit comprises an embedded controller (EC) evaporation fan, an EC condensation fan, a variable frequency compressor, a stepless regulation electric heater, a stepless regulation fresh air door, a stepless regulation return air door and an intelligent controller, wherein the intelligent controller is connected with an air supply sensor, a load sensor, a return air sensor and a fresh air sensor; refrigerating and heating parts namely the EC evaporation fan, the EC condensation fan, the variable frequency compressor, the stepless regulation electric heater, the stepless regulation fresh air door and the stepless regulation return air door are connected with the intelligent controller and controlled by the intelligent controller; and the intelligent controller performs analog to digital conversion on a signal which is acquired by each sensor to obtain value quantity, generates a control instruction by using a fuzzy control system in the intelligent controller and drives the refrigerating and heating parts to operate. A stepless regulation structure is employed, the air conditioning unit is controlled by the intelligent controller, air quantity which is delivered to a track carriage is changed, the temperature field and speed field of the inner part of the carriage are stabilized, and the taking comfort of the track carriage is improved.

Description

A kind of used for rail vehicle intelligent air-conditioning unit
Technical field
The present invention relates to rail traffic vehicles Air-conditioner design and manufacturing technology field, specifically, is a kind of used for rail vehicle intelligent air-conditioning unit .
Background technology
Current traffic and transport field at home and abroad, track traffic (comprising city underground and light rail, inter-city passenger rail and intercity subway) has become the trend of every country and the development of regional public transport.In modern society, people are very high to safety, convenient, comfortable requirement, to the requirement of track traffic, are also like this.Therefore, more and more higher to the requirement of rail vehicle.And to meet these requirements, and rail vehicle must be to intelligentized future development, and it has the difference on many 26S Proteasome Structure and Functions than existing rail vehicle.
With regard to the air-conditioning of rail vehicle, the air-conditioning unit that existing rail vehicle adopts is generally single cold type constant speed air-conditioning unit or cold-warm type air-conditioning unit, they are all generally according to the requirement of temperature in rail carriages, to control the start and stop of compressor, evaporation fan and condensation fan, adopt the number of units of compressor bypass, close compressor or cylinder and the volume of unloading compressor to carry out the control of cold when air-conditioning unit sub-load.These not only make the control method of air-conditioning unit, and temperature fluctuation in rail carriages is large, comfortableness is poor, and the energy consumption of air-conditioning unit is also large, and especially the energy consumption of the cold-warm type air-conditioning unit of electrified heating is just larger.Therefore objectively, the air-conditioning unit of current track vehicle has the following disadvantages:
(1) in rail carriages, temperature fluctuation is large.Because compressor adopts on off control, and there is requirement the shortest running time of compressor, so when sub-load, by start and stop compressor frequently, control indoor temperature, little when large during cold output, can cause the interior temperature fluctuation of rail carriages larger, the comfortableness that impact is taken.
(2) energy consumption is large.The air-conditioning unit that adopts constant speed compressor is because one of frequent starting or multiple compressors cause the loss of starting current and the energy loss of air-conditioning system.
(3) make airflow field and the temperature field acute variation of rail carriages, do not reach inhomogeneity requirement.
Summary of the invention
The object of the invention is to solve or partly address the above problem, a kind of used for rail vehicle intelligent air-conditioning unit is provided, adopt stepless regulation structure part, by intelligent controller, each critical piece of air-conditioning unit is carried out to " obfuscation " and controls, make the air-conditioning unit of rail vehicle have advantages of energy-conservation, make people's ride comfort.
For realizing above-mentioned object, the technical solution used in the present invention is as follows.
A kind of used for rail vehicle intelligent air-conditioning unit, contain EC evaporation fan, EC condensation fan, frequency-changeable compressor, step-less adjustment electric heater, evaporimeter and condenser, the outlet of described evaporimeter links together by the import of copper pipe and frequency-changeable compressor, outlet and the condenser inlet of described frequency-changeable compressor link together by copper pipe, the outlet of described condenser and device for drying and filtering and liquid-sighting glass link together by copper pipe, the outlet of described liquid-sighting glass links together by the import of copper pipe and expansion valve, the outlet of expansion valve and the import of evaporimeter link together, form a refrigerating circuit system, step-less adjustment electric heater and EC evaporation fan form one and heat circuit system, it is characterized in that, at fresh wind port, be provided with the new air door of step-less adjustment, the return air inlet in unit is provided with step-less adjustment return air door, an intelligent controller is set and on intelligent controller, connects supply air sensor, load transducer, return air sensor and new wind sensor, described EC evaporation fan, EC condensation fan, frequency-changeable compressor, step-less adjustment electric heater, the new air door of step-less adjustment and step-less adjustment return air door and described intelligent controller are connected and are subject to the control of intelligent controller, described intelligent controller is by supply air sensor, load transducer, the signal of return air sensor and new wind sensor collection is after analog-to-digital conversion converts numerical quantities to, fuzzy control program by intelligent controller inside produces control instruction, drive EC evaporation fan, EC condensation fan, frequency-changeable compressor, step-less adjustment electric heater, the new air door of step-less adjustment and step-less adjustment return air door, make EC evaporation fan and EC condensation fan there is the function of stepless DC speed regulation, make step-less adjustment electric heater, the new air door of step-less adjustment and step-less adjustment return air door have the function of step-less adjustment, above-mentioned EC evaporation fan, EC condensation fan, frequency-changeable compressor, step-less adjustment electric heater, the new air door of step-less adjustment and step-less adjustment return air door and intelligent controller are contained in Stainless Steel Shell by the electric enclosure group of air-conditioning, form an air-conditioning unit.
Further, described intelligent controller carries out data acquisition, computing and control start and stop in kind of refrigeration cycle: by the temperature in return air sensor acquisition trajectory compartment, by supply air sensor, gather the temperature of air conditioning exhausting, by new wind sensor, gather the temperature outside car, after intelligent controller internal calculation, obtain design temperature: the temperature in rail carriages deducts the temperature difference e between design temperature, the fuzzy control temperature range of e is defined as to-2 ℃≤e≤2 ℃; And temperature difference e is with respect to the rate of change e ' of acquisition time, its fuzzy control scope is-0.5 ℃≤e '≤0.5, so just temperature has been carried out to Fuzzy processing, by temperature difference e and difference variation rate e ' input intelligent controller; In intelligent controller, the computing of fuzzy control program draws refrigeration output percentage U, and then control according to this voltage of the EC condensation fan of the frequency of frequency-changeable compressor and the EC evaporation fan of stepless DC speed regulation and stepless DC speed regulation, thereby the temperature in compartment is reached to accurate control.
Further, the control model of described intelligent controller in heating process is: the EC evaporation fan by stepless DC speed regulation sucks gas and by sending into rail carriages the heat exchange of step-less adjustment electric heater in rail carriages again, by return air sensor, gather the temperature in compartment, by supply air sensor, gather the temperature of air conditioning exhausting, by new wind sensor, gather the temperature outside car, after intelligent controller internal calculation, obtain design temperature: the temperature in compartment deducts the temperature difference e between design temperature, the temperature range of the fuzzy control of e is defined as to-2 ℃≤e≤2 ℃, and temperature difference e is with respect to the rate of change e ' of acquisition time, its fuzzy control scope is-0.5 ℃≤e '≤0.5, by temperature difference e and difference variation rate e ' input intelligent controller, computing through fuzzy control program in intelligent controller draws the ratio of specific heat that adds of output, and then control according to this EC evaporation fan of the electric heater of step-less adjustment, stepless DC speed regulation and the EC condensating wind of stepless DC speed regulation, thereby the temperature in rail carriages is reached to accurate control.
Further, adopt the motor of stepless speed regulation to control the new air door of step-less adjustment, by intelligent controller, gathered the information of load transducer, by analog-to-digital conversion, be transformed into digital quantity; Then, intelligent controller is the motor to stepless speed regulation according to the big or small output pwm signal of digital quantity, realizes the stepless speed regulation of the new air door of step-less adjustment.
Further, adopt the motor of stepless speed regulation to control step-less adjustment return air door, by intelligent controller, gather the signal that supply air sensor, load transducer, return air sensor and new wind sensor gather, by analog-to-digital conversion, be transformed into digital quantity; Then, intelligent controller is the motor to stepless speed regulation according to the big or small output pwm signal of digital quantity, realizes the stepless speed regulation of step-less adjustment return air door.
Operation principle and the course of work of a kind of used for rail vehicle intelligent air-conditioning of the present invention unit are:
The EC evaporation fan of described stepless DC speed regulation sucks gas in rail carriages, then by evaporimeter heat exchange, send into again rail carriages, after the now heat absorption of the liquid refrigerant in evaporimeter, gasification is sucked by frequency-changeable compressor, the gas that becomes after compression HTHP enters condenser, the gas institute being sucked from atmosphere by the EC condensation fan of stepless DC speed regulation is cooling, thereby become the liquid of high pressure low temperature, finally by again entering evaporimeter after the throttling of overexpansion valve, thereby form kind of refrigeration cycle one time.In whole kind of refrigeration cycle, adopt the control system of " obfuscation ", by intelligent controller, carry out data acquisition, computing and control.
In heating process, EC evaporation fan sucks gas and by sending into rail carriages the heat exchange of step-less adjustment electric heater in rail carriages again, by the same " obfuscation ", control again, by intelligent controller, carry out data acquisition, computing and control, show that output adds ratio of specific heat clearly, thereby regulate electric heater, EC evaporation fan and EC condensation fan to control the temperature in rail carriages.
Described intelligent controller is critical component of the present invention, it is by gathering the signal of supply air sensor, load transducer, return air sensor and new wind sensor, after analog-to-digital conversion converts numerical quantities to, by its inner Fuzzy control system arranging, produce control instruction, drive the operation of refrigeration or heating; Make used for rail vehicle intelligent air-conditioning unit provide a safety, comfortable environment by bus, the energy consumption that can save air-conditioning unit for passenger simultaneously.
The good effect of a kind of used for rail vehicle intelligent air-conditioning of the present invention unit is:
(1) by adopting the intelligent controller of fuzzy algorithmic approach to control stepless DC speed regulation EC blower fan, frequency-changeable compressor, step-less adjustment electric heater, the new air door of step-less adjustment and step-less adjustment return air door, thereby reached the adjusting to wind pushing temperature, make the temperature fluctuation of rail carriages diminish and can carry out the adjusting of temperature according to compartment load, reach energy-conservation object.
(2) owing to adopting EC blower fan, frequency-changeable compressor and the step-less adjustment electric heater of stepless DC speed regulation, in the exploitation of intelligent controller and software thereof, also to drop into, so can increase to some extent in manufacturing cost, but the reduction of this air-conditioning unit later stage use cost can be offset the manufacturing cost of increase.
(3) at fresh wind port, the new air door of step-less adjustment has been installed, has been overcome the deficiency that existing new air door only has the two states of "on" and "off", realized the step-less adjustment of new wind air quantity.
(4) return air inlet in unit has been installed step-less adjustment return air door, has overcome the deficiency that existing return air door only has the two states of "on" and "off", has realized the step-less adjustment of return air air quantity.
(5) by intelligent controller, air-conditioning unit is controlled, changed the air quantity that is sent to rail carriages, stablized temperature field and the velocity field of interior, improved the comfortableness that rail carriages is taken.
Accompanying drawing explanation
Fig. 1 is the present invention oneplant the structure connection diagram of used for rail vehicle intelligent air-conditioning unit.
Label in figure is respectively:
1, EC evaporation fan; 2, EC condensation fan; 3, frequency-changeable compressor; 4, step-less adjustment electric heater;
5, the new air door of step-less adjustment; 6, step-less adjustment return air door; 7, intelligent controller; 8, supply air sensor;
9, load transducer; 10, return air sensor; 11, new wind sensor; 12, evaporimeter; 13, expansion valve;
14, liquid-sighting glass; 15, device for drying and filtering; 16, condenser.
The specific embodiment
Below in conjunction with accompanying drawing, further illustrate the present invention oneplant the specific embodiment of used for rail vehicle intelligent air-conditioning unit, but be noted that enforcement of the present invention is not limited to following embodiment.
Referring to accompanying drawing 1.A used for rail vehicle intelligent air-conditioning unit, the EC condensation fan 2 of the EC evaporation fan 1 that contains stepless DC speed regulation, stepless DC speed regulation, frequency-changeable compressor 3, step-less adjustment electric heater 4, the new air door 5 of step-less adjustment and step-less adjustment return air door 6.Described air conditioner structure can adopt present market to have the structural member of supply.Described structural member is assembled: the import by the outlet of described evaporimeter 12 by copper pipe and frequency-changeable compressor 3 links together, the outlet of described frequency-changeable compressor 3 and condenser 16 imports are linked together by copper pipe, by the outlet of stating cool condenser 16 with device for drying and filtering 15link together by copper pipe with liquid-sighting glass 14, the import by the outlet of liquid-sighting glass 14 by copper pipe and heating power expansion valve 13 links together, and the import of the outlet of expansion valve 13 and evaporimeter 12 is linked together, and forms a refrigerating circuit system.Step-less adjustment electric heater 4 is formed to one with EC evaporation fan 1 and heat circuit system.
Fresh wind port at air-conditioning unit arranges a new air door 5 of step-less adjustment, at the return air inlet of air-conditioning unit, a step-less adjustment return air door 6 is installed.
An intelligent controller 7 is set and on intelligent controller 7, connects a supply air sensor 8, load transducer 9, return air sensor 10 and a new wind sensor 11.Described EC evaporation fan 1, EC condensation fan 2, frequency-changeable compressor 3, step-less adjustment electric heater 4, the new air door 5 of step-less adjustment and step-less adjustment return air door 6 are connected on intelligent controller 7, make described parts accept the control of intelligent controller 7.
Described intelligent controller 7 is by applicant's designed, designed and the exploitation of this patent, and it is by DSP digital processing chip as main control chip, and chip internal embeds the work that fuzzy logic computing system is controlled each parts of air-conditioning; Meanwhile, described intelligent controller 7 has RS232 and RS485 communication function, can realize computer and rail vehicle network carries out real-time communication.The applicant of relevant technologies this patent will apply for that another patent is claimed, and as implementer needs, the applicant of this patent can provide correlation technique or product.
The signal that described intelligent controller 7 can gather supply air sensor 8, load transducer 9, return air sensor 10 and new wind sensor 11 converts numerical quantities to through analog-to-digital conversion, by the Fuzzy control system of intelligent controller 7 inside, control again, drive the new air door 5 of EC condensation fan 2, frequency-changeable compressor 3, step-less adjustment electric heater 4, step-less adjustment and the step-less adjustment return air door 6 of the EC evaporation fan 1 of stepless DC speed regulation, stepless DC speed regulation.
Above-mentioned cooling and warming parts and intelligent controller 7 are contained in a Stainless Steel Shell by the electric enclosure group of air-conditioning, form a basic used for rail vehicle intelligent air-conditioning unit of the present invention.
The foregoing is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of structure of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered within the scope of protection of the present invention.

Claims (3)

1. a used for rail vehicle intelligent air-conditioning unit, contain EC evaporation fan (1), EC condensation fan (2), frequency-changeable compressor (3), step-less adjustment electric heater (4), evaporimeter (12) and condenser (16), the outlet of described evaporimeter (12) links together by the import of copper pipe and frequency-changeable compressor (3), the outlet of described frequency-changeable compressor (3) and condenser (16) import link together by copper pipe, the outlet of described condenser (16) and device for drying and filtering (15) and liquid-sighting glass (14) link together by copper pipe, the outlet of described liquid-sighting glass (14) links together by the import of copper pipe and expansion valve (13), the import of the outlet of expansion valve (13) and evaporimeter (12) links together, form a refrigerating circuit system, step-less adjustment electric heater (4) forms one with EC evaporation fan (1) and heats circuit system, it is characterized in that, at fresh wind port, be provided with the new air door of step-less adjustment (5), the return air inlet in unit is provided with step-less adjustment return air door (6), an intelligent controller (7) is set and at upper supply air sensor (8), load transducer (9), return air sensor (10) and the new wind sensor (11) of connecting of intelligent controller (7), described EC evaporation fan (1), EC condensation fan (2), frequency-changeable compressor (3), step-less adjustment electric heater (4), the new air door of step-less adjustment (5) and step-less adjustment return air door (6) is connected and is subject to the control of intelligent controller (7) with described intelligent controller (7), described intelligent controller (7) is by supply air sensor (8), load transducer (9), the signal that return air sensor (10) and new wind sensor (11) gather is after analog-to-digital conversion converts numerical quantities to, the fuzzy control program inner by intelligent controller (7) produces control instruction, drive EC evaporation fan (1), EC condensation fan (2), frequency-changeable compressor (3), step-less adjustment electric heater (4), the new air door of step-less adjustment (5) and step-less adjustment return air door (6), make EC evaporation fan (1) and EC condensation fan (2) there is the function of stepless DC speed regulation, make step-less adjustment electric heater (4), the new air door of step-less adjustment (5) and step-less adjustment return air door (6) have the function of step-less adjustment, above-mentioned EC evaporation fan (1), EC condensation fan (2), frequency-changeable compressor (3), step-less adjustment electric heater (4), the new air door of step-less adjustment (5) and step-less adjustment return air door (6) and intelligent controller (7) are contained in Stainless Steel Shell by the electric enclosure group of air-conditioning, form an air-conditioning unit,
Described intelligent controller (7) carries out data acquisition, computing and control start and stop in kind of refrigeration cycle: by the temperature in return air sensor (10) acquisition trajectory compartment, by supply air sensor (8), gather the temperature of air conditioning exhausting, by new wind sensor (11), gather the temperature outside car, after intelligent controller (7) internal calculation, obtain design temperature: the temperature in rail carriages deducts the temperature difference e between design temperature, the fuzzy control temperature range of e is defined as to-2 ℃≤e≤2 ℃; And temperature difference e is with respect to the rate of change e ' of acquisition time, its fuzzy control scope is-0.5 ℃≤e '≤0.5, so just temperature has been carried out to Fuzzy processing, by temperature difference e and difference variation rate e ' input intelligent controller (7); In intelligent controller (7), the computing of fuzzy control program draws refrigeration output percentage, and then control according to this voltage of the EC condensation fan (2) of the frequency of frequency-changeable compressor (3) and the EC evaporation fan (1) of stepless DC speed regulation and stepless DC speed regulation, thereby the temperature in compartment is reached to accurate control;
The control model of described intelligent controller (7) in heating process is: the EC evaporation fan (1) by stepless DC speed regulation sucks gas also by sending into rail carriages step-less adjustment electric heater (4) heat exchange in rail carriages again, by return air sensor (10), gather the temperature in compartment, by supply air sensor (8), gather the temperature of air conditioning exhausting, by new wind sensor (11), gather the temperature outside car, after intelligent controller (7) internal calculation, obtain design temperature: the temperature in compartment deducts the temperature difference e between design temperature, the temperature range of the fuzzy control of e is defined as to-2 ℃≤e≤2 ℃, and temperature difference e is with respect to the rate of change e ' of acquisition time, its fuzzy control scope is-0.5 ℃≤e '≤0.5, by temperature difference e and difference variation rate e ' input intelligent controller (7), computing through the interior fuzzy control program of intelligent controller (7) draws the ratio of specific heat that adds of output, and then control according to this EC evaporation fan (1) of step-less adjustment electric heater (4), stepless DC speed regulation and the EC condensation fan (2) of stepless DC speed regulation, thereby the temperature in rail carriages is reached to accurate control.
2. a kind of used for rail vehicle intelligent air-conditioning unit according to claim 1, it is characterized in that, adopt the motor of stepless speed regulation to control the new air door of step-less adjustment (5), by intelligent controller (7), gathered the information of load transducer (9), by analog-to-digital conversion, be transformed into digital quantity; Then, intelligent controller (7) is the motor to stepless speed regulation according to the big or small output pwm signal of digital quantity, realizes the stepless speed regulation of the new air door of step-less adjustment (5).
3. a kind of used for rail vehicle intelligent air-conditioning unit according to claim 1, it is characterized in that, adopt the motor of stepless speed regulation to control step-less adjustment return air door (6), by intelligent controller (7), gather the signal that supply air sensor (8), load transducer (9), return air sensor (10) and new wind sensor (11) gather, by analog-to-digital conversion, be transformed into digital quantity; Then, intelligent controller (7) is the motor to stepless speed regulation according to the big or small output pwm signal of digital quantity, realizes the stepless speed regulation of step-less adjustment return air door (6).
CN201210125355.4A 2012-04-26 2012-04-26 Intelligent air conditioning unit for track vehicle CN102620395B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102975733B (en) * 2012-12-31 2015-07-15 西安飞豹科技发展公司 Air conditioner for high-speed magnetic levitation train
CN109059206A (en) * 2018-06-14 2018-12-21 海信(山东)空调有限公司 The control method of motor of air conditioner revolving speed
CN110293984B (en) * 2019-07-04 2020-11-13 中车大连机车研究所有限公司 CO for rail transit2Refrigerant air conditioner control method

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EP2071251A1 (en) * 2006-09-19 2009-06-17 Daikin Industries, Ltd. Air-conditioning control intermediate device, air-conditioning control system, air-conditioning control method, and air-conditioning control program
CN201803430U (en) * 2010-06-13 2011-04-20 惠州市标顶空压技术有限公司 Air-conditioning energy-saving controller in subway station
CN202613676U (en) * 2012-04-26 2012-12-19 上海松芝轨道车辆空调有限公司 Intelligent air conditioning unit for track vehicle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2552783Y (en) * 2002-07-08 2003-05-28 朱明� Electric air quantity regulating device for air conditioner of railway vehicle
EP2071251A1 (en) * 2006-09-19 2009-06-17 Daikin Industries, Ltd. Air-conditioning control intermediate device, air-conditioning control system, air-conditioning control method, and air-conditioning control program
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