CN106627052B - A kind of air conditioning for automobiles PM2.5 filtration system based on CDPF - Google Patents

A kind of air conditioning for automobiles PM2.5 filtration system based on CDPF Download PDF

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Publication number
CN106627052B
CN106627052B CN201611037816.7A CN201611037816A CN106627052B CN 106627052 B CN106627052 B CN 106627052B CN 201611037816 A CN201611037816 A CN 201611037816A CN 106627052 B CN106627052 B CN 106627052B
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Prior art keywords
cdpf
automobiles
air
air conditioning
filtration system
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CN201611037816.7A
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CN106627052A (en
Inventor
林瑞
杨超凡
季何天琪
魏昊舟
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Tongji University
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Tongji University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H3/0608—Filter arrangements in the air stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H3/0608—Filter arrangements in the air stream
    • B60H3/0616—Filter arrangements in the air stream with provisions for replacing the filter element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H2003/0683—Filtering the quality of the filter or the air being checked
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H2003/0691—Adsorption filters, e.g. activated carbon

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

The air conditioning for automobiles PM2.5 filtration system based on CDPF that the present invention relates to a kind of, connect with the air inlet of air conditioning for automobiles, the system comprises: charge heating module, for heating the air for entering air conditioning for automobiles PM2.5 filtration system；CDPF oxidation catalyst filter module, connect with charge heating module, for the PM2.5 in the air after heating to be carried out chemical degradation using the catalyst in CDPF catalyst carrier, and collects the exhaust gas after degradation；Gas cooling pipeline, connect with CDPF oxidation catalyst filter module, for the air after degradation to cool down；HEPA net, with gas cool down piping connection, for the PM2.5 in physical absorption gas；Car monitoring control module, connect with charge heating module, whether the concentration for PM2.5 in monitoring car is more than purification standard value, and in the car PM2.5 concentration be more than purification standard value when control charge heating module work.Compared with prior art, the present invention have many advantages, such as filter efficiency is high, intake resistance is small, it is intelligent, do not destroy original automotive air-conditioning system and energy saving.

Description

A kind of air conditioning for automobiles PM2.5 filtration system based on CDPF
Technical field
The present invention relates to air conditioning for automobiles air purification fields, more particularly, to a kind of air conditioning for automobiles PM2.5 based on CDPF Filtration system.
Background technique
CDPF, i.e. catalytic type diesel particulate trap (Catalyzed Diesel Particulate Filter), are bavins One of the important device of oil machine exhaust aftertreatment.Its working principle is: tail gas is entered from a channel, this channel is to block , can only be gone out by the wall surface in channel from the channel on both sides, and the channel on both sides be import block, export it is penetrating.Lead to Wall surface is crossed, the only small particulate matter of gas and diameter can pass through, and big particulate matter is blocked on wall surface, to reach reduction The purpose of grain object discharge.CDPF needs to heat, because the particulate matter for being attached to wall surface needs periodically removal, this is referred to as " again It is raw ".Regeneration is exactly that the particulate matter being attached on wall surface is divided into initiative regeneration and passive regeneration to burn-up.Heating, oil spout belong to Initiative regeneration, CDPF belong to passive regeneration.C is catalyst, and the ignition temperature of particulate matter can be reduced by being coated on the wall surface of CDPF Degree, makes it to burn under normal delivery temperature.CDPF is to urge in the expansibility of diesel engine vent gas purified treatment at present The high efficiency of agent, but overall technology have been relatively mature.
The air cleaning unit of air conditioning for automobiles is mainly used for dedusting and deodorization at present, is polluting the today got worse, PM2.5 generates very important influence to human body, and air conditioning for automobiles has the function of that removal PM2.5 is increasingly important.However it is existing The air conditioning for automobiles with removal PM2.5 function realized mostly or by physical absorption, almost without by CDPF technology The case where in conjunction with air conditioning for automobiles.
Summary of the invention
The purpose of the present invention is provide a kind of air conditioning for automobiles PM2.5 filtration system based on CDPF regarding to the issue above.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of air conditioning for automobiles PM2.5 filtration system based on CDPF, connect, feature exists with the air inlet of air conditioning for automobiles In, the system comprises:
Charge heating module, for heating the air for entering air conditioning for automobiles PM2.5 filtration system；
CDPF oxidation catalyst filter module, connect with charge heating module, for utilizing the catalyst in CDPF catalyst carrier PM2.5 in air after heating is subjected to chemical degradation, and collects the exhaust gas after degradation；
Gas cooling pipeline, connect with CDPF oxidation catalyst filter module, for the air after degradation to cool down；
HEPA net, with gas cool down piping connection, for the PM2.5 in physical absorption gas；
Car monitoring control module, connect, whether the concentration for PM2.5 in monitoring car is more than net with charge heating module Change standard value, and in the car PM2.5 concentration be more than purification standard value when control charge heating module work.
The car monitors control module
PM2.5 sensor, the concentration for PM2.5 in monitoring car；
Electromagnetic relay, for controlling the working condition of charge heating module；
Acquisition controller indicates car PM2.5's for acquiring the inductive signal of PM2.5 sensor, and in inductive signal When concentration is more than purification standard value, control electromagnetic relay opens charge heating module；
First power supply, for powering for electromagnetic relay and acquisition controller.
The charge heating module includes:
Intake air preheater, for being preheated to the air for entering air conditioning for automobiles PM2.5 filtration system；
Second power supply responds when the concentration of PM2.5 is more than purification standard value in the car, for supplying for intake air preheater Electricity.
The CDPF oxidation catalyst filter module includes:
CDPF catalyst carrier reduces the initiation temperature of PM2.5, after preheating for carrying catalyst used in CDPF Air in PM2.5 carry out chemical degradation；
Exhaust gas collector, for collecting the exhaust gas after degrading.
The CDPF oxidation catalyst filter module further includes Abgassensor and alarm, and the Abgassensor is useless for monitoring The content of exhaust gas in gas collector, the alarm monitor that the waste gas content in exhaust gas collector is more than useless in Abgassensor It is responded when gas threshold value, for reminding user to need to carry out exhaust-gas treatment.
The catalyst is located on the wall surface of CDPF catalyst carrier.
Air themperature after the heating is not less than the operating temperature of catalyst.
The gas cooling pipeline includes helix cooling pipeline or the U-tube equipped with water.
The temperature of cooling gas is not higher than 60 DEG C.
The purification standard value is 35 μ g/m3。
Compared with prior art, the invention has the following advantages:
(1) inlet air filtration of air conditioning for automobiles is used for using CDPF technology, CDPF technology have been relatively mature at present, by its with Air conditioning for automobiles inlet air filtration is combined, and is not only easy to realize, and be simple and efficient, and filter efficiency is high and intake resistance is small.
(2) CDPF technology and air conditioning for automobiles inlet air filtration are combined due to this system, it is original there is no need to destroy Air conditioning for automobiles structure can be realized before this system need to be only mounted on to the air inlet of air conditioning for automobiles, be convenient for promoting, practical Performance is strong.
(3) it is equipped with interior monitoring control module, full filter is only just carried out in the concentration over-standard of PM2.5, it is intelligent Degree is high, and saves the energy, avoids the waste of resource.
(4) it is equipped with exhaust gas collector, the exhaust gas after chemical degradation is collected, exhaust gas is avoided and gets into the air pollution Atmosphere or exhaust gas enter automotive interior pollution automotive environment.
(5) it is equipped with Abgassensor and alarm, reminds car owner to carry out exhaust-gas treatment when waste gas content is exceeded, wave is kept away The case where having exempted from air pollution caused by exhaust gas collector fails.
(6) it is equipped with gas cooling pipeline, ensure that the air themperature into before automobile air-conditioning evaporator is not higher than 60 DEG C, The evaporator load excessive for preventing air conditioning for automobiles, increases the service life of air conditioning for automobiles, while meeting energy-saving and environment-friendly demand.
(7) air of the HEPA net second adsorption after chemical degradation is utilized, enhances the effect of filtering, while in the car When PM2.5 concentration is not exceeded, physical absorption can also be carried out to PM2.5, further ensure the cleaning of in-vehicle air.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is work flow diagram of the invention；
Fig. 3 is the structural schematic diagram of interior monitoring control module；
Fig. 4 is the schematic view of the mounting position of the air conditioning for automobiles PM2.5 filtration system based on CDPF；
Wherein, 1 is charge heating module for interior monitoring control module, 2, and 3 be CDPF oxidation catalyst filter module, and 4 be gas Cool down pipeline, and 5 be HEPA net, and 11 be the first power supply, and 12 be acquisition controller, and 13 be electromagnetic relay, and 14 pass for PM2.5 Sensor.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention Premised on implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to Following embodiments.
As shown in Figure 1, being the air conditioning for automobiles PM2.5 filtration system based on CDPF, the air inlet of the system and air conditioning for automobiles Connection, as shown in figure 4, the system includes: interior monitoring control module 1, the concentration for PM2.5 in monitoring car is installation site It is no be more than purification standard value, and in the car PM2.5 concentration be more than purification standard value when control air conditioning for automobiles PM2.5 filtration system into Row filtering；Charge heating module 2 responds when the concentration of PM2.5 is more than purification standard value in the car, enters automobile sky for heating Adjust the air of PM2.5 filtration system；CDPF oxidation catalyst filter module 3, for utilizing the catalyst degradation in CDPF catalyst carrier The initiation temperature of PM2.5 in air, thus by the air after heating PM2.5 carry out chemical degradation, and collect degradation after Exhaust gas；Gas cooling pipeline 4, for the air after degradation to cool down；HEPA net 5, in physical absorption cooling gas A small amount of PM2.5.
Wherein, as shown in figure 3, interior monitoring control module 1 includes: PM2.5 sensor 14, for PM2.5 in monitoring car Concentration；Electromagnetic relay 13, for controlling the working condition of charge heating module 2；Acquisition controller 12, for acquiring The inductive signal of PM2.5 sensor 14, and when inductive signal indicates the concentration of car PM2.5 more than purification standard value, control The work of the stopping charge heating module 2 of electromagnetic relay 13；First power supply 11, for being controlled for electromagnetic relay 13 and acquisition Device 12 processed is powered.Charge heating module 2 includes: intake air preheater, for the air for entering air conditioning for automobiles PM2.5 filtration system It is preheated；Second power supply responds when the concentration of PM2.5 is more than purification standard value in the car, for being intake air preheater Power supply.CDPF oxidation catalyst filter module 3 includes: CDPF catalyst carrier, for carrying CDPF catalyst, reduces the ignition of PM2.5 PM2.5 in air after preheating is carried out chemical degradation by temperature；Exhaust gas collector, for collecting the exhaust gas after degrading.Exhaust gas Sensor, for monitoring the content of exhaust gas in exhaust gas collector；Alarm monitors in exhaust gas collector in Abgassensor Waste gas content responds when being more than exhaust gas threshold value, for reminding user to need to carry out exhaust-gas treatment.
As shown in Fig. 2, the workflow of this system includes the following steps:
S1) interior monitoring control module 1 monitors PM2.5 concentration, when PM2.5 concentration is in level-one daily mean of concentration standard value 35 μg/m3When above, otherwise control the second power supply power supply controls the second power supply and stops power supply.
S2) the second power supply charges to intake air preheater, until the air entered is heated to not less than catalyst Operating temperature；
S3) high-temperature gas enters CDPF catalyst carrier, and PM2.5 therein is by chemical degradation, into waste gas collection device, Remaining gas enters gas cooling pipeline 4；
S4) when the sensor in waste gas collection device gives a warning, i.e., exhaust gas is excessive, then needs replacing gas sampling dress It sets；
S5) high temperature air is down to through gas cooling pipeline 4 not higher than 60 DEG C；
S6) cryogenic gas enters automobile air-conditioning evaporator, warm-air drier by HEPA net 5.
In the present embodiment, the specific course of work are as follows: when car monitoring control module 1 (PM2.5 concentration sensor) monitoring To PM2.5 concentration in 35 μ g/m of level-one daily mean of concentration standard value3When following, then air is directly over HEPA net 5 into automobile Air-conditioning；When car monitoring control module 1 (PM2.5 concentration sensor) monitors PM2.5 concentration in level-one daily mean of concentration standard 35 μ g/m of value3When above, power supply is intake air preheater power supply, and the air for entering air conditioning for automobiles is heated first, until plus Equalized temperature point (temperature when particles generation is identical as particle clearing amount of heat catalyst into CDPF catalyst carrier later Degree, about 265 DEG C), wherein PM2.5 is by chemical degradation by CDPF catalyst carrier for the air being subsequently heated, and others are more Clean air reduces air themperature by gas cooling pipeline 4, and a small amount of PM2.5 can quilt when followed by HEPA net 5 Physical absorption, subsequent air enter air conditioning for automobiles and enter in automobile through dedusting, deodorization.Car is equipped with monitoring control system simultaneously System can control the process of chemical degradation.
Air conditioning for automobiles PM2.5 filtration system arrangement based on CDPF requires, in automobile air conditioner inlet, i.e. air conditioning for automobiles Before evaporator and air blower (as shown in air conditioning for automobiles PM2.5 filtration system installation site figure of the Fig. 2 based on CDPF), in addition must It must guarantee that the air themperature entered in evaporator must be not higher than 60 DEG C through gas cooling pipeline 4, prevent evaporator load excessive. Intake air preheater is required in the present embodiment the air for entering air conditioning for automobiles being heated at least 200 DEG C or more, be can be only achieved in this way The equalized temperature point of corresponding catalyst, to realize the chemical degradation of PM2.5.Therefore diesel engine intake preheats before needing to use Device is simultaneously transformed, and guarantees the heating temperature requirement of the device.CDPF catalyst carrier is surveyed by modeling and practical windage Examination, it is necessary to have lesser windage, biggish air permeability, while selecting that equalized temperature point is lower, aging curve is more flat Slow catalyst can reduce the burden of intake air preheater.
Interior PM2.5 concentration monitor control module, is built upon in following basis of reality: GB3095-2012 " surrounding air Quality standard " in fine particle (PM2.5) 35 μ g/m of level-one daily mean of concentration standard value3As purification target value, thus work as When in-car air quality reaches purification target value, the function of CDPF carrier filter device can be closed, is directly carried out by HEPA net 5 Filtering.The function of this system is, realizes to the purification function of PM2.5 in the air for entering air conditioning for automobiles, overcomes traditional vapour Vehicle air-conditioning is only limitted to the function of dedusting, deodorization.In addition, taking chemical degradation and physical absorption to combine the processing of PM2.5 Method, significantly more efficient reduction PM2.5 enters the content of air conditioning for automobiles, contained outside contamination air to automobile from source The influence that interior air generates.
The part core code of car monitoring control module 1 is as follows:
By the mature technology that exhaust emissions of diesel engine purifies, by the air conditioning for automobiles PM2.5 filtration system based on CDPF, The PM2.5 content into automotive interior can be effectively reduced, driver and passenger is made to obtain good driving environment.This system will The chemical degradation of PM2.5 and physical absorption are integrated in one, and have higher filter capacity, and interior monitor control system reduces Utilization to the energy has more important supplementary function for the air cleaning of air conditioning for automobiles, it may have certain theory and Realistic meaning.

Claims (10)

1. a kind of air conditioning for automobiles PM2.5 filtration system based on CDPF, connect with the air inlet of air conditioning for automobiles, which is characterized in that The system comprises:
Charge heating module, for heating the air for entering air conditioning for automobiles PM2.5 filtration system；
CDPF oxidation catalyst filter module, connect with charge heating module, for that will be added using the catalyst in CDPF catalyst carrier PM2.5 in air after heat carries out chemical degradation, and collects the exhaust gas after degradation；
Gas cooling pipeline, connect with CDPF oxidation catalyst filter module, for the air after degradation to cool down；
HEPA net, with gas cool down piping connection, for the PM2.5 in physical absorption gas；
Car monitoring control module, connect with charge heating module, and whether the concentration for PM2.5 in monitoring car is more than purification mark Quasi- value, and in the car PM2.5 concentration be more than purification standard value when control charge heating module work.
2. the air conditioning for automobiles PM2.5 filtration system according to claim 1 based on CDPF, which is characterized in that the car Monitoring control module includes:
PM2.5 sensor, the concentration for PM2.5 in monitoring car；
Electromagnetic relay, for controlling the working condition of charge heating module；
Acquisition controller indicates the concentration of car PM2.5 for acquiring the inductive signal of PM2.5 sensor, and in inductive signal When more than purification standard value, control electromagnetic relay opens charge heating module；
First power supply, for powering for electromagnetic relay and acquisition controller.
3. the air conditioning for automobiles PM2.5 filtration system according to claim 1 based on CDPF, which is characterized in that the air inlet Warm-up block includes:
Intake air preheater, for being preheated to the air for entering air conditioning for automobiles PM2.5 filtration system；
Second power supply responds when the concentration of PM2.5 is more than purification standard value in the car, for powering for intake air preheater.
4. the air conditioning for automobiles PM2.5 filtration system according to claim 1 based on CDPF, which is characterized in that the CDPF Oxidation catalyst filter module includes:
CDPF catalyst carrier reduces the initiation temperature of PM2.5, by the sky after preheating for carrying catalyst used in CDPF PM2.5 in gas carries out chemical degradation；
Exhaust gas collector, for collecting the exhaust gas after degrading.
5. the air conditioning for automobiles PM2.5 filtration system according to claim 4 based on CDPF, which is characterized in that the CDPF Oxidation catalyst filter module further includes Abgassensor and alarm, and the Abgassensor is for monitoring exhaust gas in exhaust gas collector Content, alarm response when Abgassensor monitors that the waste gas content in exhaust gas collector is more than exhaust gas threshold value, is used It needs to carry out exhaust-gas treatment in prompting user.
6. the air conditioning for automobiles PM2.5 filtration system according to claim 4 based on CDPF, which is characterized in that the catalysis Agent is located on the wall surface of CDPF catalyst carrier.
7. the air conditioning for automobiles PM2.5 filtration system according to claim 4 based on CDPF, which is characterized in that the heating Air themperature afterwards is not less than the operating temperature of catalyst.
8. the air conditioning for automobiles PM2.5 filtration system according to claim 1 based on CDPF, which is characterized in that the gas The pipeline that cools down includes helix cooling pipeline or the U-tube equipped with water.
9. the air conditioning for automobiles PM2.5 filtration system according to claim 1 based on CDPF, which is characterized in that cooling gas Temperature be not higher than 60 DEG C.
10. the air conditioning for automobiles PM2.5 filtration system according to claim 1 based on CDPF, which is characterized in that the purification Standard value is 35 μ g/m3。
CN201611037816.7A 2016-11-23 2016-11-23 A kind of air conditioning for automobiles PM2.5 filtration system based on CDPF Active CN106627052B (en)

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CN115138189B (en) * 2022-07-27 2023-11-03 同济大学 Fuel cell cathode three-stage air filtering device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202993389U (en) * 2012-12-24 2013-06-12 夏凤毅 Novel indoor dust fall air conditioner with carbon dioxide concentration detecting function

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US20130042589A1 (en) * 2010-08-20 2013-02-21 Michael J. Chanak Filter including a hot melt coated continuous substrate

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202993389U (en) * 2012-12-24 2013-06-12 夏凤毅 Novel indoor dust fall air conditioner with carbon dioxide concentration detecting function

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