CN109795284A - A kind of parallel connection double mode independence cooling air unit and its control method - Google Patents
A kind of parallel connection double mode independence cooling air unit and its control method Download PDFInfo
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- CN109795284A CN109795284A CN201811607571.6A CN201811607571A CN109795284A CN 109795284 A CN109795284 A CN 109795284A CN 201811607571 A CN201811607571 A CN 201811607571A CN 109795284 A CN109795284 A CN 109795284A
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Abstract
The invention discloses a kind of double mode independence cooling air units in parallel, including mechanical commprssor, condenser, air conditioning box body assembly, the low-voltage DC electric compressor by Vehicular accumulator cell driving, vehicular high-power generator, intelligent controller driven by dynamo belt；Mechanical commprssor, low-voltage DC electric compression 8 are connect by connecting line with condenser respectively, condenser is connect by connecting line with air conditioning box body assembly, air conditioning box body assembly passes through connecting line again and connect respectively with mechanical commprssor, low-voltage DC electric compressor, forms refrigerant circulating passage；Intelligent controller is connect with mechanical commprssor, condenser, air conditioning box body assembly, low-voltage DC electric compressor and Vehicular accumulator cell simultaneously.The automatic conversion of air-conditioning work mode under two kinds of operating conditions can be realized through the invention, and the energy conversion efficiency of air-conditioning is promoted to higher level, while can be realized industrialization, and the use demand of a large amount of commercial vehicle users is met.
Description
Technical field
The present invention relates to a kind of commercial vehicle air-conditioning and its control methods, and in particular to one kind has driving, parking double work
Mode commercial vehicle air-conditioning device and its control method.
Background technique
In recent years, commercial vehicle market was increasingly mature, the increasingly raising that commercial vehicle user requires ride comfort, air-conditioning quotient
It is constantly reformed therewith with vehicle conditioning technology.Commercial vehicle user has the case where rest in driver's cabin during long-distance transport, due to
Engine driving air-conditioning system refrigeration is opened when rest in the car, needs to consume great amount of fuel oil, while engine noise will affect
Rest, it is therefore desirable to which a kind of commercial vehicle air-conditioning with driving, parking dual modes of operation, air-conditioning does not depend under parking operating condition
Engine power works, referred to as independent cooling air unit.
For commercial vehicle powered by conventional energy, under driving states, there is energy using the Refrigeration Technique of engine power
High conversion efficiency is measured, energy converts convenient advantage；And when vehicle is in parked state, and engine stop works, using electricity
The advantage that the Refrigeration Technique of power drive compressor has quiet environmental protection, cost performance high.Therefore a kind of integrated two kinds of Working moulds are needed
Formula can give full play to the commercial vehicle air-conditioning device of both of which technical advantage in one by control method.
Known existing commercial vehicle is more to be had using overhead type or rear mounted independent cooling air unit, and core is a set of independent
Electric air-conditioning system (patent No. CN105799453A), but its use and control on can not be with the organic knot of bridge crane air conditioning system
It closes, and increases the components such as evaporator and condenser, occupy biggish interior space, cause inconvenient and cost wave
Take.
Summary of the invention
In view of the above problems, present invention seek to address that how a set of commercial vehicle air-conditioning device meets driving, parking two simultaneously
The problem of refrigerating function under a operating condition, while air-conditioning work mode under two kinds of operating conditions is realized by the control method of the system
Automatic conversion, and the energy conversion efficiency of air-conditioning is promoted to higher level, while can be realized industrialization, meet a large amount of commercial
The use demand at automobile-used family.
Technical scheme is as follows, in conjunction with attached drawing:
A kind of parallel connection double mode independence cooling air unit, including drive by 1 belt of engine mechanical commprssor 2, condense
Device 4, air conditioning box body assembly 6, the low-voltage DC electric compressor 8 driven by Vehicular accumulator cell 7, vehicular high-power generator 10,
Intelligent controller 11；Mechanical commprssor 2, low-voltage DC electric compressor 8 are connect by connecting line with condenser 4 respectively,
Condenser 4 is connect by connecting line with air conditioning box body assembly 6, air conditioning box body assembly 6 pass through again connecting line respectively with machinery
Formula compressor 2, low-voltage DC electric compressor 8 connect, and form refrigerant circulating passage；Intelligent controller 11 simultaneously with it is mechanical
Compressor 2, condenser 4, air conditioning box body assembly 6, low-voltage DC electric compressor 8 and Vehicular accumulator cell 7 connect；Vehicle-mounted big function
Rate generator 10 connects Vehicular accumulator cell 7.
A kind of described double mode independence cooling air unit in parallel is set on mechanical commprssor 2 and the connecting line of condenser 4
There is No.1 check-valves 3；The connecting line of low-voltage DC electric compressor 8 and condenser 4 is equipped with No. two check-valves 9.
A kind of double mode independence cooling air unit in parallel, the engine cooling fan 13 of engine are used for condenser
4 radiate.
A kind of double mode independence cooling air unit in parallel, condenser 4 are equipped with condenser fan 5, intelligent controller
11 connect with condenser fan 5.
A kind of described double mode independence cooling air unit in parallel, air conditioning box body assembly 6 include expansion valve 61, evaporator 62,
Evaporation fan 63, respectively with 4 piping connection of low-voltage DC electric compressor 8 and condenser, expansion valve 61 is arranged to exist evaporator 62
On the connecting line of evaporator 62 and condenser 4.
Present invention simultaneously provides a kind of control methods of double mode independence cooling air unit in parallel, comprising the following steps:
1) when vehicle is in driving status, engine operation, engine driving vehicular high-power generator is started to work,
After intelligent controller detects that generator voltage increases, output order controls mechanical commprssor work, and air-conditioning is at this time
Driving refrigeration mode；
2) when vehicle is in parked state, engine stop work, vehicular high-power generator also stops working, intelligence
After controller detects that generator voltage reduces, output order controls low-voltage DC electric compressor and condenser fan work
Make, air-conditioning is in parking refrigeration mode at this time；
3) when vehicle is in parked state, and air-conditioning is in parking refrigeration mode, intelligent controller monitors driver's cabin occupant
Area and sleeping berth area temperature determine low-voltage DC electric compressor horsepower, condenser wind by comparing set temperature and actual temperature
Power is fanned, air-conditioning is made to reach best refrigeration effect；
4) when vehicle is in parked state, and air-conditioning is in parking refrigeration mode, intelligent controller monitors Vehicular accumulator cell
Voltage, when voltage is lower than limit value UminWhen, intelligent controller closes low-voltage DC electric compressor and condenser fan, air-conditioning
Into dormant state, until Vehicular accumulator cell voltage recovery to safety value UsWhen above, air-conditioning system is reworked.
In the step 4), UminValue 23V, UsValue 24.5V.
Beneficial effects of the present invention are as follows:
1. compare the prior art, such as overhead or postposition Air conditioner on car, this technical solution is by bridge crane air conditioning and Air conditioner on car collection
Integrally, condenser, air conditioning box body assembly and part of connecting pipelines are share ware, reduce components, save cost, are saved empty
Between.
2. comparing the integral type Air conditioner on car of existing other types, this technical solution is used by optimal control method
Small displacement direct current drive compressor matches 220Ah high capacity cell, has reached reduction energy consumption, extends the effect for using the time, leads to
Overtesting verifying, can be used continuously 6 hours or more, and can maintain 25 DEG C in driver's cabin of temperature under 35 DEG C of night-environments.
Detailed description of the invention
Parallel connection double mode independence cooling air unit systematic schematic diagram of the present invention shown in Fig. 1.
In figure:
1- generator；2- mechanical commprssor；3- No.1 check-valves；4- condenser；5- condenser fan；6- air conditioning box body
Assembly；7- Vehicular accumulator cell；8- low-voltage DC electric compressor；No. bis- check-valves of 9-；10- vehicular high-power generator；11- intelligence
It can control device；12- connecting line；61- expansion valve；62- evaporator；63- evaporation fan
Specific embodiment
Technical solution of the present invention is discussed in detail below in conjunction with attached drawing:
A kind of double mode independence cooling air unit in parallel of the present invention, the mechanical type pressing including the driving of 1 belt of engine
Contracting machine 2, No.1 check-valves 3, condenser 4, condenser fan 5, air conditioning box body assembly 6, the low-pressure direct driven by Vehicular accumulator cell 7
Flow 8, No. two check-valves 9 of motor compressor, intelligent controller 11 and connecting line 12, mechanical commprssor 2, low-voltage DC electric
Compressor 8 is connect by connecting line 12 with condenser 4, and condenser 4 is connect by connecting line with air conditioning box body assembly 6, empty
It adjusts cabinet assembly 6 to connect again by connecting line with mechanical commprssor 2, low-voltage DC electric compressor 8, forms refrigerant and follow
Ring access.Mechanical commprssor 2 is driven by 1 belt of engine, and engine cooling fan 13 is for radiating to condenser 4.
No.1 check-valves 3, low-voltage DC electric compressor 8 and condensation are equipped on the connecting line of mechanical commprssor 2 and condenser 4
The connecting line of device 4 is equipped with No. two check-valves 9.Condenser 4 is equipped with condenser fan 5, and air conditioning box body assembly 6 includes expansion
Valve 61, evaporator 62, evaporation fan 63, evaporator 62 are connect with low-voltage DC electric compressor 8 and condenser 4 respectively, expansion
Valve 61 is arranged on the connecting line of evaporator 62 and condenser 4.Vehicular high-power generator 10 is connect with Vehicular accumulator cell 7.
Intelligent controller 11 simultaneously with mechanical commprssor 2, condenser 4, air conditioning box body assembly 6, low-voltage DC electric compressor 8 and
Vehicular accumulator cell 7 connects.
Specific embodiment is as follows:
When user uses the device, which is started by operation intelligent controller 11, intelligent controller 11 can root
Judge that vehicle is in driving or parked state according to the engine start stop signal monitored, if vehicle is in driving states, intelligence is controlled
Device processed, which issues instruction, makes mechanical commprssor 2 work, and engine drives engine cooling fan 13 to dissipate for condenser 4 by belt
Heat, expansion valve 61, evaporator 62 in air conditioning box body assembly 6 carry out throttling and evaporation to refrigerant, and evaporation fan 63 is by cold air
It is blown into driver's cabin and carries out refrigeration cool-down, air-conditioning system is freezed by energy source of engine at this time；As vehicle is in parking
State, 11 device of intelligent control, which issues instruction, makes low-voltage DC electric compressor 8 work, while intelligent controller 11 controls condenser
It is that condenser 4 radiates that fan 5, which is started to work, and the expansion valve 61, evaporator 62 in air conditioning box body assembly 6 throttle to refrigerant
Evaporation, evaporation fan 63, which blows chilled air into, carries out refrigeration cool-down in driver's cabin, air-conditioning system is completely with Vehicular accumulator cell at this time
Freeze for energy source.Vehicle is when driving, converting under parking operating condition, independent cooling air unit also automatic conversion operating mode.
Intelligent controller 11 is the present apparatus " brain ", it is realized by monitoring engine start stop signal to vehicle working condition
Monitoring, identification vehicle are in driving or parked state and quick response.Meanwhile intelligent controller 11 can be according to the driving monitored
Room temperature automatically adjusts to electrical compressor power, condenser fan power, evaporator fan power, has reached and stay
Capacity usage ratio maximizes under turner condition.Said function can be also realized under driving operating condition.Because Vehicular accumulator cell 7 undertakes vehicle simultaneously
Startup function, intelligent controller 11 monitor 7 end voltage of Vehicular accumulator cell simultaneously, when voltage is lower than limit value, intelligent controller
11 automatic closing systems are prevented because vehicle can not start caused by battery voltage is too low.In practical applications, because parking operating condition is normal
The case where with occupant's rest, intelligent controller 11 also have timed startup/shutdown function, are easy to use.
Motor compressor is the core component of the present apparatus, and motor compressor is divided into AC system and single flow, because of AC system electricity
Dynamic compressor is needed using alternating current as power supply, and Vehicular accumulator cell is 24V DC power supply, such as needs to increase inversion using this scheme
Device occupies larger space and higher cost, and can directly to use battery as power supply, this patent uses 24V direct current
Motor compressor.The work characteristics of motor compressor is that high-power operating condition energy conversion efficiency is high simultaneously, small-power operating condition energy
Transformation efficiency is low, and the work of air-conditioning system most cases is in low-power area when vehicle parking, therefore present invention employs discharge capacities to be
The low-voltage DC electric compressor of 16ml/r, the compressor displacement is small, and rated power is lower, small-power operating condition it is small still have it is higher
Energy conversion efficiency, therefore it is particularly suitable for independent cooling air unit described in this patent.
The effect of check-valves 3,9 is the height in connecting line 12 when wherein a compressor works system in the present embodiment
Compression refrigerant will not flow back and impact another compressor, play the role of that compressor can be protected.
Condenser fan 5 can provide heat dissipation in the case where vehicle is in parking operating condition for air-conditioning system in the present embodiment, due to
Vehicle is under driving states, and air-conditioning system heat dissipation relies on engine cooling fan 13 and natural wind, therefore condenser fan needs
It to be designed using engraved structure, prevent from increasing condenser front windage.Use air quantity for 1200m in practical application3/ h (air outlet
Static pressure 100Pa) axial fan control rotation speed of the fan as condenser fan, and using pwm signal, can receive
The instruction of intelligent controller 11 carries out power regulation, achievees the effect that saving electric energy, extension use the time.The large capacity stores
Battery is 220Ah car battery, and is shared with vehicle launch battery.The generator is 110A (24V) generator, by
Dynamo belt driving.110A (24V) can be greater than as preferred power generator power, and shared with vehicle original vehicle generator；As
It is preferred that dual-zone temperature monitoring can be used in intelligent controller.
A kind of double mode independence cooling air unit control method in parallel of the present invention, specific embodiment are as follows:
1) when vehicle is in driving status, engine operation, engine driving vehicular high-power generator is started to work,
After intelligent controller detects that generator voltage increases, output order controls air-conditioning system mechanical formula compressor operating, at this time
Air-conditioning is in driving refrigeration mode；
2) when vehicle is in parked state, engine stop work, vehicular high-power generator also stops working, intelligence
After controller detects that generator voltage reduces, output order controls air-conditioning system low-voltage DC electric compressor and condenser
Fan work, air-conditioning is in parking refrigeration mode at this time；
3) when vehicle is in parked state, and air-conditioning is in parking refrigeration mode, intelligent controller monitors driver's cabin occupant
Area and sleeping berth area temperature determine low-voltage DC electric compressor horsepower, condenser wind by comparing set temperature and actual temperature
Power is fanned, air-conditioning is made to reach best refrigeration effect；
4) when vehicle is in parked state, and air-conditioning is in parking refrigeration mode, intelligent controller monitors Vehicular accumulator cell
Voltage, when voltage is lower than limit value UminWhen, intelligent controller closes low-voltage DC electric compressor and condenser fan, air-conditioning
Into dormant state, until Vehicular accumulator cell voltage recovery to safety value UsWhen above, air-conditioning system is reworked.Wherein Us=
Umin+ △ U, △ U is safety coefficient.UminValue 23V, UsValue 24.5V.
Claims (7)
1. a kind of parallel connection double mode independence cooling air unit, which is characterized in that including the mechanical type pressing driven by engine (1) belt
Contracting machine (2), condenser (4), air conditioning box body assembly (6), by Vehicular accumulator cell (7) driving low-voltage DC electric compressor (8),
Vehicular high-power generator (10), intelligent controller (11)；Mechanical commprssor (2), low-voltage DC electric compressor (8) are respectively
It is connect by connecting line with condenser (4), condenser (4) is connect by connecting line with air conditioning box body assembly (6), air-conditioning box
Body assembly (6) is connect with mechanical commprssor (2), low-voltage DC electric compressor (8) by connecting line respectively again, forms system
Refrigerant cycle access；Intelligent controller (11) simultaneously with mechanical commprssor (2), condenser (4), air conditioning box body assembly (6), low
Straightening stream motor compressor (8) and Vehicular accumulator cell (7) connection；Vehicular accumulator cell (7) is connected with vehicular high-power generator
(10)。
2. a kind of double mode independence cooling air unit in parallel as described in claim 1, which is characterized in that the mechanical commprssor
(2) No.1 check-valves (3) are equipped with the connecting line of condenser (4)；Low-voltage DC electric compressor (8) and condenser (4)
Connecting line be equipped with No. two check-valves (9).
3. a kind of double mode independence cooling air unit in parallel as described in claim 1, which is characterized in that the engine is equipped with hair
Motivation radiator fan (13), for radiating to condenser (4).
4. a kind of double mode independence cooling air unit in parallel as described in claim 1, which is characterized in that on the condenser (4)
Equipped with condenser fan (5), intelligent controller (11) is connect with condenser fan (5).
5. a kind of double mode independence cooling air unit in parallel as described in claim 1, which is characterized in that the air conditioning box body assembly
(6) include expansion valve (61), evaporator (62), evaporation fan (63), evaporator (62) respectively with low-voltage DC electric compressor
(8) and condenser (4) piping connection, expansion valve (61) are arranged on the connecting line of evaporator (62) and condenser (4).
6. a kind of control method of double mode independence cooling air unit in parallel as described in claim 1, which is characterized in that including with
Lower step:
1) when vehicle is in driving status, engine operation, engine driving vehicular high-power generator is started to work, intelligence
After controller detects that generator voltage increases, output order controls mechanical commprssor work, and air-conditioning is in driving at this time
Refrigeration mode；
2) when vehicle is in parked state, engine stop work, vehicular high-power generator also stops working, intelligent control
After device detects that generator voltage reduces, output order controls low-voltage DC electric compressor and condenser fan work, this
Space-time is mediated in parking refrigeration mode；
3) when vehicle is in parked state, and air-conditioning is in parking refrigeration mode, intelligent controller monitor driver's cabin occupant area and
Sleeping berth area temperature determines low-voltage DC electric compressor horsepower, condenser fan function by comparing set temperature and actual temperature
Rate makes air-conditioning reach best refrigeration effect；
4) when vehicle is in parked state, and air-conditioning is in parking refrigeration mode, intelligent controller monitors vehicular electricity storage cell voltage,
When voltage is lower than limit value UminWhen, intelligent controller closes low-voltage DC electric compressor and condenser fan, and air-conditioning, which enters, stops
Dormancy state, until Vehicular accumulator cell voltage recovery to safety value UsWhen above, air-conditioning system is reworked.
7. a kind of control method as claimed in claim 6, which is characterized in that in the step 4), UminValue 23V, UsValue
24.5V。
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| CN201811607571.6A CN109795284A (en) | 2018-12-27 | 2018-12-27 | A kind of parallel connection double mode independence cooling air unit and its control method |
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| CN201811607571.6A CN109795284A (en) | 2018-12-27 | 2018-12-27 | A kind of parallel connection double mode independence cooling air unit and its control method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111497558A (en) * | 2020-05-06 | 2020-08-07 | 东风商用车有限公司 | Switching control method and system for air conditioner interface of automobile central control screen |
| CN111959227A (en) * | 2020-07-31 | 2020-11-20 | 宁波奥克斯电气股份有限公司 | Control method of vehicle-mounted air conditioning system, vehicle-mounted air conditioning system and storage medium |
| CN112009205A (en) * | 2020-08-30 | 2020-12-01 | 东风商用车有限公司 | Air conditioner compressor applied to commercial vehicle cab |
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| CN108146192A (en) * | 2017-12-25 | 2018-06-12 | 上海加冷松芝汽车空调股份有限公司 | A kind of dual-purpose refrigerated air-conditioning system of novel traveling/parking |
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| JPH115434A (en) * | 1997-06-14 | 1999-01-12 | Tadashi Baba | On-vehicle air-conditioning device |
| CN202528798U (en) * | 2012-03-28 | 2012-11-14 | 上海金翅鹏实业有限公司 | Dual-mode automotive air-conditioning device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111497558A (en) * | 2020-05-06 | 2020-08-07 | 东风商用车有限公司 | Switching control method and system for air conditioner interface of automobile central control screen |
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| CN111959227A (en) * | 2020-07-31 | 2020-11-20 | 宁波奥克斯电气股份有限公司 | Control method of vehicle-mounted air conditioning system, vehicle-mounted air conditioning system and storage medium |
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| CN112009205A (en) * | 2020-08-30 | 2020-12-01 | 东风商用车有限公司 | Air conditioner compressor applied to commercial vehicle cab |
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Application publication date: 20190524 |