CN108151384A - A kind of electric automobile heat-pump air-conditioning system vehicle external heat exchanger machinery defroster - Google Patents
A kind of electric automobile heat-pump air-conditioning system vehicle external heat exchanger machinery defroster Download PDFInfo
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- CN108151384A CN108151384A CN201810022760.0A CN201810022760A CN108151384A CN 108151384 A CN108151384 A CN 108151384A CN 201810022760 A CN201810022760 A CN 201810022760A CN 108151384 A CN108151384 A CN 108151384A
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- Prior art keywords
- heat exchanger
- external heat
- vehicle external
- defrosting
- defroster
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a kind of electric automobile heat-pump air-conditioning system machinery defroster, including air accelerator, defroster, transmission device and detection sensor;The air accelerator is mounted on front on vehicle external heat exchanger;The defroster is located above vehicle external heat exchanger, and including scraping, head is scraped in a connecting rod, defrosting firmly and defrosting is soft scrapes head;The transmission device is mounted on vehicle external heat exchanger side, defroster to be driven to do reciprocating linear motion on vehicle external heat exchanger;The detection sensor is controlling the action moment of the transmission device.It is an advantage of the invention that:By the condensed water on air accelerator sweeper external heat exchanger, slow down the accumulation of condensation water on vehicle external heat exchanger;Using mechanical defroster, the frost layer of vehicle external heat exchanger can be effectively and quickly removed under heating condition, promotes the heating effect of air-conditioning system, removes defrosting mode from, while maintaining vehicle interior temperature stabilization, improves the course continuation mileage of electric vehicle.
Description
Technical field
The present invention relates to a kind of mechanical defroster more particularly to a kind of electric automobile heat-pump air-conditioning system vehicle external heat exchangers
Mechanical defroster.
Background technology
During winter, pure electric automobile carries out heating due to not having engine to provide waste heat, thus it requires automotive air-conditioning system
Not only there is cooling in summer, also need to undertake winter heating.At present, pure electric automobile mainly uses electrical heating auxiliary air conditioner system
System carries out winter heating, and heating COP is up to 1, therefore winter air-conditioning needs to consume a large amount of electric energy when heating mode is run
It is heated, this course continuation mileage that will greatly shorten electric vehicle.
In order to improve the heating efficiency of pure electric automobile winter heating, also have and heat pump type air conditioner is used in pure electric automobile
System carries out cooling and heating.However, due to heat pump air conditioner, heating efficiency is relatively low at low ambient temperatures and heating mode is got off
The easy frosting of external heat exchanger, air-conditioning need to be switched to defrosting mode by heating mode, carry out defrost in time.Interior side will during defrost
Stop heating, vehicle interior temperature reduces and generates condensed water simultaneously, and interior comfort is deteriorated.System switches back into heating mould from defrosting mode
During formula, the condensed water in air duct on heat exchanger can evaporate rapidly, and atomization causes certain danger on the windshield, to driving,
Therefore the application of traditional heat pump air conditioning system is also subjected to limitation.
Invention content
To solve the above-mentioned problems, the object of the present invention is to provide a kind of defrostings of electric automobile heat-pump air-conditioning system machinery to fill
It puts, during electric automobile during traveling, under air-conditioning heating operating mode, the air of roof is skipped over by air accelerator acceleration,
Condensed water on sweeper external heat exchanger can slow down the accumulation of condensation water on vehicle external heat exchanger;In a manner that machinery blows frost,
Effectively, quickly, low energy consumption the frost layer on vehicle external heat exchanger is removed, so as to save defrosting mode, solution is developed pure at present
The safe driving problem that electric automobile air-conditioning system heating mode and defrosting mode are brought when mutually switching.
In order to achieve the above object, the technical solution adopted by the present invention is:
A kind of electric automobile heat-pump air-conditioning system vehicle external heat exchanger machinery defroster, including air accelerator, defrosting dress
It puts, transmission device and detection sensor;
The air accelerator is mounted on front on vehicle external heat exchanger, and the air accelerator has what is be spaced apart
Multiple inlet and outlets, import are exported towards vehicle external heat exchanger, and inlet -duct area gradually contracts to discharge area towards windward side
It is small;
The defroster is located above vehicle external heat exchanger, and head is scraped in a connecting rod, defrosting firmly and defrosting is soft scrapes head including scraping,
The defrosting scrapes head mounted on scraping on a connecting rod firmly, and the soft head of scraping of the defrosting is scraped on head firmly mounted on defrosting, and described removes
The soft head of scraping of frost is tightly attached on vehicle external heat exchanger, and the soft brush head of defrosting and the shape of vehicle external heat exchanger are mutually agreed with;
The transmission device is mounted on vehicle external heat exchanger side, and linear movable end is connect with a connecting rod of scraping,
Defroster to be driven to do reciprocating linear motion on vehicle external heat exchanger;
The detection sensor is mounted on vehicle external heat exchanger, to control the action moment of the transmission device.
Further, the transmission device includes gear, gear guide and motor, and the gear is two, point
It is not rotatably connected on the both ends for scraping a connecting rod, the gear guide is four, is divided into two groups, is pacified to about one group parallel interval
Mounted in the side of vehicle external heat exchanger, another group of mirror is mounted on the opposite side of vehicle external heat exchanger to ground, and the gear engages respectively
Between the gear guide of vehicle external heat exchanger both sides, the motor is electrically connected with detection sensor, output shaft and lower section
Two gear guides be all connected with, two gear guides to be driven to rotate synchronously, and then two gears being meshed is driven to turn
It does reciprocating linear motion while dynamic along gear guide.
Further, the output shaft of the motor is turned by two helical gears to two gear guides is driven to synchronize
It is dynamic.
Preferably, the defrosting is scraped head and is made of antifriction alloy firmly, and the soft head of scraping of the defrosting is made of plastics;It is described
The hard brush head of defrosting be built-in with the high frequency oscillation device being electrically connected with detection sensor.
Preferably, the detection sensor is for detecting the temperature sensor of vehicle external heat exchanger temperature or using
In the position sensor of detection vehicle external heat exchanger frost thickness.
The vehicle external heat exchanger of the present invention is made of refrigerant flow path and fin, generally rectangular flat structure, it is preferable that vehicle
External heat exchanger is fin-tube heat exchanger or microchannel flat tube heat exchanger.
The course of work of electric automobile heat-pump air-conditioning system machinery defroster of the present invention is:
When electric vehicle is in when driving, the air with respect to electric vehicle motion is further speeded up through air accelerator, empty
It after gas velocity degree is improved, guides and blows to vehicle external heat exchanger, the condensation water on sweeper external heat exchanger slows down condensation water and is collected at
On vehicle external heat exchanger, so as to slow down the formation of frost layer.
When detection sensor detects that the frost layer of vehicle external heat exchanger reaches certain thickness or vehicle external heat exchanger temperature is less than
During a certain value, detection sensor transmits a signal to motor, under the driving of motor, the rotation of two gear guide of downside, with
Gear guide meshed gears moves, and a connecting rod back-and-forth motion is scraped so as to drive.It is built in the high frequency to defrost in hard brush head simultaneously
Rocking equipment starts.During a connecting rod movement is scraped, frost layer is divided under the action of high frequency oscillation device with vehicle external heat exchanger
From defrosting scrapes head firmly and strikes off most frost layer, and the soft brush head that defrosts further scrapes the frost layer for being close to vehicle external heat exchanger surface
It removes.When scraping connecting rod and reaching vehicle external heat exchanger one end, motor reversion is scraped a link motion direction and is changed.When defrosting terminates
When, defroster returns to original position.
Compared with prior art, the present invention it has the following advantages that:
1st, by the tapered configuration of air accelerator, by the high-speed air of relative motion during electric automobile during traveling into one
Step accelerates, and guides and blows to vehicle external heat exchanger, and the condensed water on sweeper external heat exchanger can slow down condensation water on vehicle external heat exchanger
Accumulation.
2nd, by mechanical defroster, the frost layer of vehicle external heat exchanger can be effectively and quickly removed under heating condition, is promoted
The heating effect of air-conditioning system removes defrosting mode from, and vehicle interior temperature is maintained to stablize.
3rd, defrosting motor and high frequency oscillation rating of set are relatively low, while remove air-conditioning system defrosting mode from, can save electricity
Electrical automobile defrosting power consumption improves the course continuation mileage of electric vehicle.
Description of the drawings
Fig. 1 is a kind of structural representation of the mechanical defroster of electric automobile heat-pump air-conditioning system vehicle external heat exchanger of the present invention
Scheme (vertical view).
Fig. 2 is the left view sectional view of the present invention.
Fig. 3 is the main view sectional view of the defroster of the present invention.
Fig. 4 is the air accelerator structure diagram of the present invention.
Reference sign:1- refrigerant flow paths;2- scrapes a connecting rod;3- gears;4- vehicle external heat exchangers;5- gear guides;
6- motor;7- air accelerators;8- defrostings scrape head firmly;9- defrostings are soft to scrape head;10- imports;11- is exported.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, clear and definite, below in conjunction with the accompanying drawings and specific embodiment party
Formula is described in further details present disclosure.It is understood that specific embodiment described herein is used only for
Explain the present invention rather than limitation of the invention.It also should be noted that it for ease of description, is illustrated only in attached drawing
Part related to the present invention rather than full content.
Embodiment:
As shown in Figures 1 to 4, a kind of electric automobile heat-pump air-conditioning system vehicle external heat exchanger machinery of the invention defrosting dress
It puts, vehicle external heat exchanger 4 is made of refrigerant flow path 1 and fin, preferably fin-tube heat exchanger or microchannel flat tube heat exchanger,
Generally rectangular flat structure;Mechanical defroster is then mainly passed by air accelerator 7, defroster, transmission device and detection
Sensor forms.
Air accelerator 7 be mounted on vehicle external heat exchanger 4 upper front, air accelerator 7 have be spaced apart it is multiple into
Mouthfuls 10 and outlet 11, import 10 is towards windward side, and outlet 11 is towards vehicle external heat exchanger 4, and the sectional area of import 10 is to exporting 11
Sectional area be gradually reduced, the tapered configuration of taper is formed, by the high-speed air of relative motion during electric automobile during traveling
It further speeds up, guides and blow to 4 surface of vehicle external heat exchanger, the condensed water on sweeper external heat exchanger 4 slows down vehicle external heat exchanger 4
The accumulation of upper condensation water.
Defroster is located at the top of vehicle external heat exchanger 4, including scrape a connecting rod 2, defrosting firmly scrape first 8 and defrosting it is soft scrape first 9,
Defrosting firmly scrapes first 8 be mounted on scrape on a connecting rod 2, defrosting it is soft scrape first 9 be mounted on defrosting scrape on first 8 firmly, defrost it is soft scrape first 9 bottom surface
The upper surface of vehicle external heat exchanger 4 is tightly attached to, and the shape phase contract of the bottom surface and the upper surface of vehicle external heat exchanger 4 for the soft brush head 9 that defrosts
It closes.First 8 preferably antifriction alloys are scraped in defrosting firmly, and defrosting is soft to scrape first 9 preferably moderate plastic materials of hardness, and defrost hard brush head 8
Built-in high frequency oscillation device, the high frequency oscillation device are commercially available.Defrosting scrapes first 8 and defrosts that soft to scrape first 9 be sheet knot firmly
Structure.
Transmission device includes gear 3, gear guide 5 and motor 6, and gear 3 is two, is rotatablely connected respectively by bearing
At the both ends for scraping a connecting rod 2, gear guide 5 is four, is divided into two groups, about one group parallel interval mounted on vehicle external heat exchanger
4 left side, is mounted on to about another group parallel interval the right side of vehicle external heat exchanger 4, and the left and right sides highly consistent, gear
3 are engaged on respectively between the gear guide 5 of 4 both sides of vehicle external heat exchanger, and motor 6 is mounted on the right side of vehicle external heat exchanger 4, defeated
Shaft connect two gear guides 5 respectively with lower section by two helical gears, is turned so that two gear guides 5 is driven to synchronize
It is dynamic, so two gears 3 being meshed is driven to rotate while moved forward and backward along gear guide 5, before driving and scraping a connecting rod 2
After move, gear 3 is engaged between upper and lower gear guide 5, it is ensured that the smooth motion of gear 3 prevents single-rail structure
Shaking.
The structure of transmission device can also use other modes, such as can be by turn-screw, feed screw nut and servo
Motor form, turn-screw are separately mounted to the both sides of vehicle external heat exchanger 4, and feed screw nut is screwed onto on turn-screw respectively, is scraped
The both ends of head connecting rod 2 are separately fixed on feed screw nut, and servo motor drives turn-screw rotation, since feed screw nut is scraped head
The containing of connecting rod 2 can not rotate, and can only move along a straight line along turn-screw, scrape a connecting rod 2 so as to drive and be moved forward and backward.
Transmission device can also use Synchronous Belt Drives mode, and the both ends that scrape a connecting rod 2 are separately fixed at outside vehicle and change
On the synchronous tooth profile band of hot 4 both sides of device, servo motor drives synchronous cog belt to move forward and backward, before and after driving and scraping a connecting rod 2
It is mobile.
Transmission device can also use rack pinion mode, and the both ends for scraping a connecting rod 2 are rotatably connected on outside vehicle respectively
On the gear of 4 both sides of heat exchanger, gear is engaged on rack, and the output shaft and gear of servo motor are coaxially connected, band moving gear
Rotation is scraped a connecting rod 2 and is moved forward and backward along rack so as to drive.
Detection sensor can be used the temperature sensor of detection vehicle external heat exchanger temperature or using heat exchange outside detection vehicle
The position sensor of device frost thickness is electrically connected respectively with motor 6 and high frequency oscillation device, to control motor 6 and height
The action moment of frequency rocking equipment.
The course of work of the electric automobile heat-pump air-conditioning system machinery defroster of the present invention is as follows:
When electric vehicle is in when driving, the air with respect to electric vehicle motion is further speeded up through air accelerator 7, empty
It after gas velocity degree is improved, guides and blows to vehicle external heat exchanger 4, the condensation water on sweeper external heat exchanger 4 slows down condensation water and gathers
On vehicle external heat exchanger 4, so as to slow down the formation of frost layer.
When detection sensor detects that the frost layer of vehicle external heat exchanger 4 reaches certain thickness or 4 temperature of vehicle external heat exchanger is low
When a certain value, detection sensor transmits a signal to motor 6, under the driving of motor 6,5 turns of two gear guide of downside
It is dynamic, it is moved with 5 meshed gears 3 of gear guide, scrapes a connecting rod 2 so as to drive and be moved forward and backward.It is built in the hard brush head 8 of defrosting simultaneously
Interior high frequency oscillation device starts.Scrape a connecting rod 2 move during, frost layer under the action of high frequency oscillation device with outside vehicle
Heat exchanger 4 detaches, and defrosting scrapes first 8 firmly and strikes off most frost layer, and defrost the frost that soft brush head 9 will be close to vehicle external heat exchanger surface
Layer further strikes off.When scraping arrival vehicle 4 one end of external heat exchanger of a connecting rod 2, motor 6 inverts, and scrapes 2 direction of motion of a connecting rod and changes
Become.At the end of defrosting, defroster returns to original position.
As can be seen that tapered configuration of the present invention by air accelerator 7, by relative motion during electric automobile during traveling
High-speed air further speed up, guiding blows to vehicle external heat exchanger 4, and the condensed water on sweeper external heat exchanger 4 can slow down vehicle
The accumulation of condensation water on external heat exchanger 4;Secondly using mechanical defroster, vehicle can effectively and quickly be removed under heating condition
The frost layer of external heat exchanger 4 promotes the heating effect of air-conditioning system, removes defrosting mode from, and vehicle interior temperature is maintained to stablize;It is in addition, electric
Motivation 6 and high frequency oscillation rating of set are relatively low, while defrosting mode is removed from, can save electric vehicle defrosting power consumption, improve
The course continuation mileage of electric vehicle.
Above-described embodiment is in the art the purpose is to be to allow simply to illustrate that the technical concepts and features of the present invention
Those of ordinary skill can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all
It is the equivalent variation or modification made according to the essence of the content of present invention, should all covers within the scope of the present invention.
Claims (5)
1. a kind of electric automobile heat-pump air-conditioning system vehicle external heat exchanger machinery defroster, it is characterised in that:Accelerate including air
Device, defroster, transmission device and detection sensor;
The air accelerator is mounted on front on vehicle external heat exchanger, and the air accelerator is multiple with being spaced apart
Inlet and outlet, import are exported towards vehicle external heat exchanger, and inlet -duct area is gradually reduced to discharge area towards windward side;
The defroster is located above vehicle external heat exchanger, and head is scraped in a connecting rod, defrosting firmly and defrosting is soft scrapes head including scraping, described
Defrosting scrape head firmly and be mounted on and scrape on a connecting rod, the defrosting is soft to scrape head and is mounted on defrosting and scrape on head firmly, and the defrosting is soft
It scrapes head to be tightly attached on vehicle external heat exchanger, the soft brush head of defrosting and the shape of vehicle external heat exchanger are mutually agreed with;
The transmission device is mounted on vehicle external heat exchanger side, and linear movable end is connect with a connecting rod of scraping, with band
Dynamic defroster does reciprocating linear motion on vehicle external heat exchanger;
The detection sensor is mounted on vehicle external heat exchanger, to control the action moment of the transmission device.
2. a kind of electric automobile heat-pump air-conditioning system vehicle external heat exchanger machinery defroster according to claim 1, special
Sign is:The transmission device includes gear, gear guide and motor, and the gear is two, is rotatablely connected respectively
At the both ends for scraping a connecting rod, the gear guide is four, is divided into two groups, and be mounted on vehicle to about one group parallel interval changes outside
The side of hot device, another group of mirror are mounted on the opposite side of vehicle external heat exchanger to ground, and the gear is engaged on outside vehicle and exchanges heat respectively
Between the gear guide of device both sides, the motor is electrically connected with detection sensor, two gears of output shaft and lower section
Guide rail is all connected with, two gear guides to be driven to rotate synchronously, and then edge while drive the two gears rotation being meshed
Gear guide does reciprocating linear motion.
3. a kind of electric automobile heat-pump air-conditioning system vehicle external heat exchanger machinery defroster according to claim 2, special
Sign is:The output shaft of the motor is by two helical gears to two gear guides is driven to rotate synchronously.
4. a kind of electric automobile heat-pump air-conditioning system vehicle external heat exchanger machinery defroster according to claim 1, special
Sign is:The defrosting is scraped head and is made of antifriction alloy firmly, and the soft head of scraping of the defrosting is made of plastics;The defrosting is hard
Brush head is built-in with the high frequency oscillation device being electrically connected with detection sensor.
5. a kind of electric automobile heat-pump air-conditioning system vehicle external heat exchanger machinery defroster according to claim 1, special
Sign is:The detection sensor is temperature sensor for detecting vehicle external heat exchanger temperature or for detecting vehicle
The position sensor of external heat exchanger frost thickness.
Priority Applications (1)
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CN201810022760.0A CN108151384A (en) | 2018-01-10 | 2018-01-10 | A kind of electric automobile heat-pump air-conditioning system vehicle external heat exchanger machinery defroster |
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CN201810022760.0A CN108151384A (en) | 2018-01-10 | 2018-01-10 | A kind of electric automobile heat-pump air-conditioning system vehicle external heat exchanger machinery defroster |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108954563A (en) * | 2018-08-28 | 2018-12-07 | 珠海格力电器股份有限公司 | A kind of air-conditioner outdoor unit and air conditioner |
CN109269016A (en) * | 2018-08-02 | 2019-01-25 | 珠海格力电器股份有限公司 | A kind of defrosting control method, device and heat pump unit |
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CN207881294U (en) * | 2018-01-10 | 2018-09-18 | 中国科学院广州能源研究所 | A kind of electric automobile heat-pump air-conditioning system vehicle external heat exchanger machinery defroster |
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