CN106627044A - Heat pump type pure electric bus air conditioner with efficient defrosting function - Google Patents
Heat pump type pure electric bus air conditioner with efficient defrosting function Download PDFInfo
- Publication number
- CN106627044A CN106627044A CN201710051518.1A CN201710051518A CN106627044A CN 106627044 A CN106627044 A CN 106627044A CN 201710051518 A CN201710051518 A CN 201710051518A CN 106627044 A CN106627044 A CN 106627044A
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- defrosting
- core body
- compressor
- hot
- temperature
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Classifications
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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
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
-
- 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
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
-
- 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
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
- B60H1/00899—Controlling the flow of liquid in a heat pump system
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a heat pump type pure electric bus air conditioner with an efficient defrosting function. The air conditioner comprises a compressor, two evaporator assemblies, a condenser assembly, a pipeline assembly and a controller assembly. A PTC electric heater is arranged between an evaporation core and evaporation fans of an evaporator. An exhaust gas temperature sensor is arranged at an outlet of the compressor. Defrosting temperature sensors are arranged on a condensing core. Outdoor temperature sensors are arranged at an air inlet of a condenser. An evaporation temperature sensor is arranged on each evaporation core. A return air temperature sensor is arranged at a return air port of each evaporator assembly. All the sensors are connected with the controller assembly through pipelines. According to the pure electric bus air conditioner, the defrosting mode starting time and the defrosting mode stop time of the air conditioner, and the rotating speed of the compressor, the opening degrees of electronic expansion valves and the starting level of PTC electric heating in the defrosting process are intelligently calculated by monitoring the bus outside environment temperature, the temperature of the condensing core, and the exhaust gas temperature of the compressor, the defrosting efficiency is improved, and the power consumption of the product is reduced.
Description
Technical field
The present invention relates to air conditioner for electric motor coach technical field, and in particular to a kind of pump type heat pure electric coach of efficient defrosting
Air-conditioning.
Background technology
Because the fuel engines waste heat without traditional vehicle can be utilized, existing pure electric coach air-conditioning winter heating can only
By air-conditioner set or ptc heater, air conditioner heat pump system low-temperature heating can effectively be made up using ptc heater heat supply
The problem of energy difference, but efficiency is too low, has a strong impact on the course continuation mileage of car load.It is higher using heat pump type air conditioning system efficiency, but
The easy frosting of unit condenser in heating process, unit performance decay is more obvious after condenser frosting, in order to reduce
The risk that frosting is caused to system, part coach air conditioner producer heats the use of pump in the temperature relatively low time limit, only using electrical heating
Carry out heat supply；Although also part producer is using heat pump heat supply, do not consider operation of air conditioner operating mode to system defrosting
Affect, thorough or defrosting efficiency is not low to cause defrosting；Additionally, due to using heating power expansion valve as throttle mechanism, Flow-rate adjustment
Precision is poor, causes refrigerant flow during defrosting relatively low, and then affects defrosting efficiency.
The content of the invention
To solve the above problems, the invention provides a kind of pump type heat pure electric coach air-conditioning of efficient defrosting, by heat pump
System and PTC electric heating systems combine and are applied to during heating and defrosting, improve the quality stream of cold-producing medium during defrosting
Amount and pressure, lift defrosting speed and defrosting effect.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of pump type heat pure electric coach air-conditioning of efficient defrosting, the air-conditioning is installed on the big top of car, including compressor, two
Set evaporator assembly, a set of condenser assembly, pipeline assembly and control assembly, compressor is by cross valve and evaporator assembly
It is connected, the porch of the evaporator assembly is provided with electric expansion valve, and before and after electric expansion valve filter is respectively equipped with；
Evaporator assembly includes evaporation core body and evaporation fan, and condenser assembly includes condensation core body and condensation fan, the evaporation core
PTC electric heater is provided between body and evaporation fan, exhaust gas temperature sensor, the condensation are disposed with the compressor outlet
Defrosting temperature sensor is disposed with core body, outdoor temperature sensor, the evaporation core are disposed with condenser air inlet position
Evaporating temperature sensor is disposed with body, at the return air inlet of evaporator assembly return air temperature sensor is provided with；Above-mentioned all sensings
Device is connected by pipeline with control assembly.
The compressor is DC frequency-changeable compressor.
A kind of hot Defrost method of the pump type heat pure electric coach air-conditioning of efficient defrosting, comprises the following steps：
1）Heating mode runs, and with two aspect operations of time-division, on the one hand whether detection condensation core body temperature sensor is normal, if
Normally, detection condensation core body temperature, if condensation core body temperature is higher than 0 DEG C, is back to heating mode operation, completes a circulation,
If condensation core body temperature is less than 0 DEG C, whether detection compressor non-defrosting mode accumulated running time meets requirement, will if being unsatisfactory for
Ask, be back to heating mode operation, complete a circulation, if meet requiring, open hot defrosting mode；If condensation core body temperature is passed
Sensor is abnormal, then this step of skip detection condensation core body temperature, directly carries out detecting the accumulative operation of the non-defrosting mode of compressor
Whether the time meets requirement；
On the other hand, detect whether air-conditioning panel opens hot defrosting, if opening, be back to heating mode operation, complete one and follow
Ring, if not opening, whether detection condensation core body temperature sensor is normal, abnormal, opens hot defrosting mode, if normally, detection
Whether condensation core body temperature is less than 10 DEG C, if being less than 10 DEG C, opens hot defrosting mode, if being not less than 10 DEG C, is back to and heats mould
Formula is run, and completes a circulation；
2）For into hot defrosting mode, the hot Defrost operation time is detected, when the hot Defrost operation time setting value is exceeded, returned
To heating mode operation, a circulation is completed, if the hot Defrost operation time, not less than setting value, to system high voltage fault is uploaded,
If failure, heating mode operation is back to, completes a circulation, if non-faulting, whether detection condensation core body temperature is higher than setting
Temperature is exited in defrosting, if exiting temperature higher than setting defrosting, is back to heating mode operation, a circulation is completed, if it is not, returning
To hot defrosting mode, proceed system circulation.
The hot defrosting mode include the following aspects, 1）Compressor rotary speed adjustment, 2）Electronic expansion valve opening adjustment,
3）Cross valve power-off, 4）Condensation fan shutdown, 5）Evaporation fan shutdown, 6）PTC electric heater open degree adjustment, 7）Display panel
Defrosting.
The pure electric air-conditioning of pump type heat of the present invention removes condenser table during air-conditioning heating by the way of hot gas defrosting
The frost layer that face produces, throttle mechanism adopts electric expansion valve, by the aperture of adjustment electric expansion valve during defrosting, improves system
The refrigerant flow of system, lifts defrosting speed, and this air-conditioning products, can using source pump and the combination of PTC auxiliary heating
Source pump heat capacity is not enough under to solve the problems, such as low temperature, and suction can be lifted again by opening electrical heating during defrosting
The pressure at gas end, improves defrosting efficiency.The present invention pure electric coach air-conditioning by monitoring heating operations in car external environment temperature,
Condensation core body temperature, compressor exhaust temperature data, intelligence computation air-conditioning enters and exits time and the defrosting process of defrosting
The electrically heated unlatching grade of the rotating speed of middle compressor, the aperture of electric expansion valve, PTC, is realizing air-conditioning system rapid frost melting
Meanwhile, defrosting efficiency is improved, reduce product power consumption.
Description of the drawings
Fig. 1 is the air-conditioning system arrangement schematic diagram of the present invention.
Fig. 2 is the air-conditioning system fundamental diagram of the present invention.
Fig. 3 is air-conditioning system defrosting control logic figure.
Specific embodiment
To make those skilled in the art more fully understand the present invention, the present invention is done with reference to specific embodiment
Further illustrate：
As shown in figure 1, a kind of pump type heat pure electric coach air-conditioning of efficient defrosting, the air-conditioning is installed on the big top of car, is wrapped
Compressor 8, two sets of evaporator assemblies, a set of condenser assembly, pipeline assembly and control assemblies are included, compressor 8 passes through four-way
Valve 6 is connected with evaporator assembly, and the porch of the evaporator assembly is provided with electric expansion valve 5, before electric expansion valve 5
After be respectively equipped with filter；Evaporator assembly includes evaporation core body 1 and evaporation fan 2, and condenser assembly includes the condensation He of core body 7
Condensation fan 3, is provided with PTC electric heater 4, the exit of the compressor 8 arrangement between the evaporation core body 1 and evaporation fan 2
There is exhaust gas temperature sensor, defrosting temperature sensor 9 is disposed with the condensation core body 7, arrange at condenser air inlet position
There is outdoor temperature sensor 10, evaporating temperature sensor 11, the return air inlet 12 of evaporator assembly are disposed with the evaporation core body 1
Place is provided with return air temperature sensor 13；Above-mentioned all the sensors are connected by pipeline with control assembly.
The compressor 8 is DC frequency-changeable compressor.Patent of the present invention adopts full DC frequency-changeable compressor, during defrosting
According to the coupling of each temperature parameter of temperature sensor feedback, compressor rotary speed is adjusted, it is ensured that compressor runs in optimal rotating speed.
As shown in figure 3, a kind of hot Defrost method of the pump type heat pure electric coach air-conditioning of efficient defrosting, including following step
Suddenly：
1）Heating mode runs, and with two aspect operations of time-division, on the one hand whether detection condensation core body temperature sensor is normal, if
Normally, detection condensation core body temperature, if condensation core body temperature is higher than 0 DEG C, is back to heating mode operation, completes a circulation,
If condensation core body temperature is less than 0 DEG C, whether detection compressor non-defrosting mode accumulated running time meets requirement, will if being unsatisfactory for
Ask, be back to heating mode operation, complete a circulation, if meet requiring, open hot defrosting mode；If condensation core body temperature is passed
Sensor is abnormal, then this step of skip detection condensation core body temperature, directly carries out detecting the accumulative operation of the non-defrosting mode of compressor
Whether the time meets requirement；
On the other hand, detect whether air-conditioning panel opens hot defrosting, if opening, be back to heating mode operation, complete one and follow
Ring, if not opening, whether detection condensation core body temperature sensor is normal, if abnormal, opens hot defrosting mode, if normally, inspection
Survey whether condensation core body temperature is less than 10 DEG C, if being less than 10 DEG C, open hot defrosting mode, if being not less than 10 DEG C, be back to and heat
Mode operation, completes a circulation；
2）For into hot defrosting mode, the hot Defrost operation time is detected, when the hot Defrost operation time setting value is exceeded, returned
To heating mode operation, a circulation is completed, if the hot Defrost operation time, not less than setting value, to system high voltage fault is uploaded,
If failure, heating mode operation is back to, completes a circulation, if non-faulting, whether detection condensation core body temperature is higher than setting
Temperature is exited in defrosting, if exiting temperature higher than setting defrosting, is back to heating mode operation, a circulation is completed, if it is not, returning
To hot defrosting mode, proceed system circulation.
The hot defrosting mode include the following aspects, 1）Compressor rotary speed adjustment, 2）Electronic expansion valve opening adjustment,
3）Cross valve power-off, 4）Condensation fan shutdown, 5）Evaporation fan shutdown, 6）PTC electric heater open degree adjustment, 7）Display panel
Defrosting.
The ptc heater of this air-conditioning system adopts the control logic of progressive solution, and according to the result of intelligence computation, adjustment is melted
Electrically heated input power during frost, reduces because of the impact of the low course continuation mileage to car load of the heat exchange efficiency of PTC, in guaranteeization
While white effect, the power consumption of system is reduced.
As shown in Fig. 2 the course of work of the pump type heat pure electric coach air-conditioning of the efficient defrosting of the present invention is, air-conditioning heating
After operation a period of time, when system condenses the operation of the defrosting sensor temperature and compressor 8 arranged on core body 7 according to detection
Between, judge whether to enter defrosting pattern, if meeting condition, system enters defrosting pattern, and now the power-off of four-way change-over valve 6, cold
Solidifying blower fan 3 quits work, and air-conditioning panel shows access into defrost pattern, and electric expansion valve 5 starts according to outdoor sensor, exhaust temperature
The coupling result of gained carries out aperture adjustment after degree sensor, the measurement of defrosting temperature sensor, and compressor 8 is also according to coupling knot
Fruit carries out rotating speed lifting, and PTC electrical heating is according to the coupling result adjustment opening value, it is ensured that system refrigerant during unit defrosting
Mass flow and PTC run in rational aperture.During defrosting, the operation of the automatic real time record compressor 8 of system
Time and the temperature of defrosting sensor, after defrosting exit criteria is met, electricity on four-way change-over valve 6, condensation fan 3 starts work
Make, the aperture of electric expansion valve 5 and the rotating speed of compressor 8 are adjusted automatically according to the control logic under heating mode.System
During defrosting, according to the testing result to environment temperature, defrosting temperature and delivery temperature to compressor rotary speed, electric expansion valve
Aperture, PTC electrical heating opening values are adjusted, it is ensured that the speed and defrosting effect of defrosting, at the same reduce PTC standard-sized sheets cause compared with
High electric quantity consumption, lifts car load comfortableness and CSAT.
Claims (4)
1. a kind of pump type heat pure electric coach air-conditioning of efficient defrosting, the air-conditioning is installed on the big top of car, including compressor,
Two sets of evaporator assemblies, a set of condenser assembly, pipeline assembly and control assemblies, compressor is total with evaporimeter by cross valve
Into being connected, evaporator assembly includes evaporation core body and evaporation fan, and condenser assembly includes condensation core body and condensation fan, its
It is characterised by：The porch of the evaporator assembly is provided with electric expansion valve, and before and after electric expansion valve filtration is respectively equipped with
Device；PTC electric heater is provided between the evaporation core body and evaporation fan, delivery temperature biography is disposed with the compressor outlet
Sensor, is disposed with defrosting temperature sensor on the condensation core body, outdoor temperature sensing is disposed with condenser air inlet position
Device, is disposed with evaporating temperature sensor on the evaporation core body, at the return air inlet of evaporator assembly return air temperature sensor is provided with；
Above-mentioned all the sensors are connected by pipeline with control assembly.
2. the pump type heat pure electric coach air-conditioning of efficient defrosting according to claim 1, it is characterised in that：The compressor
For DC frequency-changeable compressor.
3. the hot Defrost method of the pump type heat pure electric coach air-conditioning of efficient defrosting according to claim 2, its feature exists
In：Comprise the following steps：
1）Heating mode runs, and with two aspect operations of time-division, on the one hand whether detection condensation core body temperature sensor is normal, if
Normally, detection condensation core body temperature, if condensation core body temperature is higher than 0 DEG C, is back to heating mode operation, completes a circulation,
If condensation core body temperature is less than 0 DEG C, whether detection compressor non-defrosting mode accumulated running time meets requirement, will if being unsatisfactory for
Ask, be back to heating mode operation, complete a circulation, if meet requiring, open hot defrosting mode；If condensation core body temperature is passed
Sensor is abnormal, then this step of skip detection condensation core body temperature, directly carries out detecting the accumulative operation of the non-defrosting mode of compressor
Whether the time meets requirement；
On the other hand, detect whether air-conditioning panel opens hot defrosting, if opening, be back to heating mode operation, complete one and follow
Ring, if not opening, whether detection condensation core body temperature sensor is normal, if abnormal, opens hot defrosting mode, if normally, inspection
Survey whether condensation core body temperature is less than 10 DEG C, if being less than 10 DEG C, open hot defrosting mode, if being not less than 10 DEG C, be back to and heat
Mode operation, completes a circulation；
2）For into hot defrosting mode, the hot Defrost operation time is detected, when the hot Defrost operation time setting value is exceeded, returned
To heating mode operation, a circulation is completed, if the hot Defrost operation time, not less than setting value, to system high voltage fault is uploaded,
If failure, heating mode operation is back to, completes a circulation, if non-faulting, whether detection condensation core body temperature is higher than setting
Temperature is exited in defrosting, if exiting temperature higher than setting defrosting, is back to heating mode operation, a circulation is completed, if it is not, returning
To hot defrosting mode, proceed system circulation.
4. the hot Defrost method of the pump type heat pure electric coach air-conditioning of efficient defrosting according to claim 3, its feature exists
In：The hot defrosting mode include the following aspects, 1）Compressor rotary speed adjustment, 2）Electronic expansion valve opening adjustment, 3）Four
Port valve power-off, 4）Condensation fan shutdown, 5）Evaporation fan shutdown, 6）PTC electric heater open degree adjustment, 7）Display panel is removed
Frost.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710051518.1A CN106627044B (en) | 2017-01-23 | 2017-01-23 | A kind of pump type heat pure electric coach air-conditioning of efficient defrosting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710051518.1A CN106627044B (en) | 2017-01-23 | 2017-01-23 | A kind of pump type heat pure electric coach air-conditioning of efficient defrosting |
Publications (2)
| Publication Number | Publication Date |
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| CN106627044A true CN106627044A (en) | 2017-05-10 |
| CN106627044B CN106627044B (en) | 2019-05-03 |
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| CN201710051518.1A Active CN106627044B (en) | 2017-01-23 | 2017-01-23 | A kind of pump type heat pure electric coach air-conditioning of efficient defrosting |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107444065A (en) * | 2017-07-26 | 2017-12-08 | 安徽江淮汽车集团股份有限公司 | Electric automobile air conditioner control system and method |
| CN108387038A (en) * | 2018-04-28 | 2018-08-10 | 深圳市科泰新能源车用空调技术有限公司 | A kind of heat pump air conditioner snow removing equipment and automobile |
| CN108944353A (en) * | 2018-09-14 | 2018-12-07 | 郑州科林车用空调有限公司 | A kind of integral new-energy passenger integrated electric changes in temperature frost removal |
| CN109624654A (en) * | 2018-12-26 | 2019-04-16 | 郑州科林车用空调有限公司 | A kind of single system changes in temperature pure electric vehicle air-conditioning using R410a refrigerant |
| CN111981638A (en) * | 2020-08-21 | 2020-11-24 | Tcl空调器(中山)有限公司 | Control method of expansion valve, defrosting device, air conditioner and storage medium |
| CN112455185A (en) * | 2020-12-08 | 2021-03-09 | 安徽江淮汽车集团股份有限公司 | Battery thermal management control method, equipment, storage medium and device |
| CN112793380A (en) * | 2020-12-30 | 2021-05-14 | 珠海格力电器股份有限公司 | Control method and device of automobile air conditioner, storage medium and automobile air conditioner |
| CN114234368A (en) * | 2021-12-27 | 2022-03-25 | 珠海格力电器股份有限公司 | Control method, control device, and nonvolatile storage medium |
| CN114454778A (en) * | 2022-03-02 | 2022-05-10 | 河南海威新能源科技有限公司 | Electric engineering vehicle and thermal management system thereof |
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| CN109624654A (en) * | 2018-12-26 | 2019-04-16 | 郑州科林车用空调有限公司 | A kind of single system changes in temperature pure electric vehicle air-conditioning using R410a refrigerant |
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| CN111981638B (en) * | 2020-08-21 | 2021-08-24 | Tcl空调器(中山)有限公司 | Control method of expansion valve, defrosting device, air conditioner and storage medium |
| CN112455185A (en) * | 2020-12-08 | 2021-03-09 | 安徽江淮汽车集团股份有限公司 | Battery thermal management control method, equipment, storage medium and device |
| CN112793380A (en) * | 2020-12-30 | 2021-05-14 | 珠海格力电器股份有限公司 | Control method and device of automobile air conditioner, storage medium and automobile air conditioner |
| CN114234368A (en) * | 2021-12-27 | 2022-03-25 | 珠海格力电器股份有限公司 | Control method, control device, and nonvolatile storage medium |
| CN114454778A (en) * | 2022-03-02 | 2022-05-10 | 河南海威新能源科技有限公司 | Electric engineering vehicle and thermal management system thereof |
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|---|---|
| CN106627044B (en) | 2019-05-03 |
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