CN113320353A - Walking and parking integrated air conditioner and control system thereof - Google Patents
Walking and parking integrated air conditioner and control system thereof Download PDFInfo
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- CN113320353A CN113320353A CN202110759254.1A CN202110759254A CN113320353A CN 113320353 A CN113320353 A CN 113320353A CN 202110759254 A CN202110759254 A CN 202110759254A CN 113320353 A CN113320353 A CN 113320353A
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- 238000005057 refrigeration Methods 0.000 claims abstract description 184
- 239000007788 liquid Substances 0.000 claims abstract description 53
- 230000001105 regulatory effect Effects 0.000 claims abstract description 42
- 238000004378 air conditioning Methods 0.000 claims abstract description 34
- 238000003860 storage Methods 0.000 claims description 58
- 238000000034 method Methods 0.000 claims description 18
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 24
- 239000000446 fuel Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 7
- 238000003912 environmental pollution Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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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
- B60H1/00421—Driving arrangements for parts of a vehicle air-conditioning
- B60H1/00428—Driving arrangements for parts of a vehicle air-conditioning electric
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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
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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
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3205—Control means therefor
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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
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3227—Cooling devices using compression characterised by the arrangement or the type of heat exchanger, e.g. condenser, evaporator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
Abstract
A traveling and parking integrated air conditioner and a control system thereof comprise: the system comprises a travelling compressor, a parking compressor, a blower, a controller, a speed regulating module, a condenser, an expansion valve, an evaporator and an indoor temperature sensor. The utility model discloses a refrigeration system, including driving compressor, parking compressor, expansion valve, driving compressor and parking compressor, driving compressor is for getting power compressor, the parking compressor is electric compressor, driving compressor and parking compressor are linked together through check valve and condenser, the play liquid end of condenser communicates with the feed liquor end of expansion valve mutually, the end of giving vent to anger of expansion valve communicates with the inlet end of evaporimeter mutually, driving compressor and parking compressor are linked together through three way connection and evaporimeter, the integrated air conditioner that moves and dwells passes through the controller and judges the refrigeration mode. The design can automatically judge the air conditioner mode, realize the effect of economically operating the air conditioner, reduce the space occupation of an air conditioning system, improve the available space of a cab and effectively improve the comfort of a driver.
Description
Technical Field
The invention relates to an air conditioner for a vehicle, in particular to a traveling and parking integrated air conditioner and a control system thereof, which are particularly suitable for a traveling and parking dual-purpose air conditioning system for improving fuel economy.
Background
Along with the gradual improvement of living standard, the requirement of an automobile driver on the comfort of a cab is higher and higher, and particularly in hot summer, the good cooling performance of an automobile air conditioner plays a crucial role in the whole driving process; at present, parking air-conditioning systems in the market of commercial vehicles are divided into two categories, one category is that a fuel generator is used for driving a compressor to run, and the other category is that a storage battery is used for directly driving a household air conditioner or a top-mounted air conditioner which is independent from a driving air-conditioning system to work.
The two parking air conditioners can regulate the temperature of the cab in a parking state, are not influenced by the rotating speed of the engine during working, and still have the following defects:
1. the mode of using the fuel generator not only causes environmental pollution and poor fuel economy, but also causes too much vibration and noise of the fuel generator under the parking condition, thereby reducing the use comfort of users.
2. The household air conditioner internal machine part occupies the internal space of the cab, the available space in the vehicle is reduced, the external part of the air conditioner influences the appearance of the whole vehicle, and the household air conditioner requires the whole vehicle to be additionally provided with a 220V power interface, so that the production cost and the system complexity are additionally increased.
3. The vibration and noise generated on the roof when the overhead air conditioner works cause poor user experience comfort.
4. The control systems of the two air conditioning systems both need to be additionally provided with a parking air conditioner controller and a parking air conditioner switch outside the driving air conditioning control system, so that the economical efficiency and the aesthetic property of the instrument desk of the cab are influenced.
Disclosure of Invention
The invention aims to overcome the defects of complex structure and poor economical efficiency of a parking air conditioner in the prior art, and provides a traveling and parking integrated air conditioner and a control system thereof, wherein the traveling and parking integrated air conditioner is provided with a traveling compressor and a parking compressor, and meanwhile, a refrigeration mode can be automatically selected through a controller to realize economic operation.
In order to achieve the above purpose, the technical solution of the invention is as follows:
a row and park integrated air conditioner and a control system thereof, the row and park integrated air conditioner comprises: the system comprises a travelling crane compressor, a parking compressor, a compressor relay, a condensing fan relay, a blower relay, a controller, an air conditioner refrigeration switch, a speed regulation module, a storage battery, a power main switch, a one-way valve, a condenser, an expansion valve, an evaporator, a three-way joint and an indoor temperature sensor; the running compressor is a power take-off compressor, the parking compressor is an electric compressor, the check valve is a two-in one-out check valve, and the compressor relay, the condensing fan relay and the blower relay are all normally open relays; the liquid outlet end of the traveling crane compressor is communicated with one of the liquid inlet ends of the one-way valve, the liquid outlet end of the parking compressor is communicated with the other liquid inlet end of the one-way valve, the liquid outlet end of the one-way valve is communicated with the liquid inlet end of the condenser, the liquid outlet end of the condenser is communicated with the liquid inlet end of the expansion valve, the gas outlet end of the expansion valve is communicated with the gas inlet end of the evaporator, the gas outlet end of the evaporator is communicated with the gas inlet end of the three-way joint, one of the gas outlet ends of the three-way joint is communicated with the gas inlet end of the traveling crane compressor, the other gas outlet end of the three-way joint is communicated with the gas inlet end of the parking compressor, the air outlet of the condensing fan is over against the condenser, and the air outlet of the air blower is over against the evaporator; the control circuit of the traveling and parking integrated air conditioner comprises the following steps: the positive pole of the storage battery is connected with a power end of a power main switch, the negative pole of the storage battery is connected with a load end of the power main switch after being sequentially connected with a travelling crane compressor, a contact group of a compressor relay and a contact group of a blower relay in series, the negative pole of the storage battery is connected with the load end of the power main switch after being connected with a parking compressor in series, the negative pole of the storage battery is connected with a coil of the blower relay in series and then connected with the load end of the power main switch, the negative pole of the storage battery is connected with a negative terminal of a controller after being sequentially connected with a coil of an air conditioner refrigeration switch and a coil of the compressor relay in series, and the condensing fan control end of the controller is connected with the coil of a condensing fan relay in series and then connected with the negative terminal of the power main switch The negative pole of the storage battery is connected with the load end of the power supply main switch after being sequentially connected with the condensing fan and the contact group of the condensing fan relay in series; the parking of parking compressor opens and stops signal input part and the parking of controller and stops signal output part and be connected, the parking control signal input part of parking compressor is connected with the parking control signal output part of controller, the speed governing signal input part of controller is connected with the speed governing signal output part of speed governing module, indoor temperature sensor's temperature signal output part is connected with the temperature signal input part of controller.
The controller is a controller which can set an engine rotating speed threshold value, a voltage threshold value and a target temperature value and send out a control signal.
The controller is an air conditioner controller or a BCM.
The controller, the air conditioner refrigeration switch and the speed regulation module are arranged on an instrument desk of an automobile cab; the parking compressor and the condensing fan are arranged on the automobile chassis.
The expansion valve, the evaporator and the indoor temperature sensor are arranged in the automobile cab.
A control method of a traveling and parking integrated air conditioner comprises the following steps:
the first step is as follows: setting parameters, wherein the controller sets preset parameters in a factory stage, and the preset parameters comprise: an engine rotating speed threshold value and a storage battery voltage threshold value;
the second step is that: the method comprises the steps of starting an air conditioner, namely, after a driver turns on a power main switch, powering on a vehicle, powering on a coil of a blower relay, attracting a contact of a load end of the blower relay after the coil of the blower relay is powered on, setting a speed regulation module to be a non-0 gear, starting the blower to work, and enabling the air conditioner to enter a judgment working mode;
the third step: judging the working mode, wherein a driver turns on a refrigeration switch and sets the target temperature in the vehicle on a setting controller, and the controller detects a switching signal sent by an air-conditioning refrigeration switch, a speed regulating signal sent by a speed regulating module, an indoor temperature signal sent by an indoor temperature sensor, the voltage value of a storage battery and the rotating speed of an engine in a certain period to comprehensively judge the working mode of the air conditioner;
and when the signals detected by the controller simultaneously meet the following conditions, entering a fourth walking vehicle refrigeration mode:
a) the refrigeration switch of the air conditioner is turned on,
b) the gear set by the speed regulating module is not 0,
c) the voltage value of the storage battery is greater than or equal to the voltage threshold value of the storage battery,
d) the engine speed is greater than or equal to the threshold value of the engine speed set by the controller,
e) the indoor temperature is greater than a preset target temperature value in the vehicle;
and when the signals detected by the controller simultaneously meet the following conditions, entering a sixth step parking refrigeration mode:
a) the refrigeration switch of the air conditioner is turned on,
b) the gear set by the speed regulating module is not 0,
c) the voltage value of the storage battery is greater than or equal to the voltage threshold value of the storage battery,
d) the engine speed is less than the threshold engine speed set by the controller,
e) the indoor temperature is greater than a preset target temperature value in the vehicle;
when the signals detected by the controller do not meet the conditions for entering the driving refrigeration mode and the parking refrigeration mode, the current working state is maintained;
the fourth step: in the driving refrigeration mode, when the controller judges that the vehicle enters the driving refrigeration mode, the controller sends a low level signal to drive the compressor relay to work, a coil of the compressor relay is electrified, the coil of the compressor relay is electrified to attract a load end contact of the compressor relay, the driving compressor starts to work after the load end contact of the compressor relay is attracted, a gaseous refrigeration medium is pressurized into a high-temperature high-pressure liquid refrigeration medium after the driving compressor works, the high-temperature high-pressure liquid refrigeration medium is pressed into the condenser, the high-temperature high-pressure liquid refrigeration medium in the condenser is cooled into a medium-temperature high-pressure refrigeration medium through the head-on wind in the driving process, the medium-temperature high-pressure refrigeration medium is pushed by the pressure generated by the driving compressor to enter the expansion valve to be expanded into a low-temperature low-pressure gaseous refrigeration medium, and the low-temperature low-pressure gaseous, the evaporator exchanges heat through airflow generated when the blower works, and meanwhile, a refrigeration medium in the evaporator returns to the running compressor to complete refrigeration cycle;
the fifth step: the driving refrigeration mode is closed, when a driver closes the air conditioner refrigeration switch, the coil end of the compressor relay is powered off, the coil end of the compressor relay releases the contact of the load end of the compressor relay after being powered off, and the driving compressor stops working;
and a sixth step: the parking refrigeration mode is characterized in that after a vehicle enters the parking refrigeration mode, a controller sends driving signals to a parking compressor and a condensing fan relay, the parking compressor starts to work after receiving the driving signals, after the parking compressor works, a gaseous refrigeration medium is pressurized into a high-temperature high-pressure liquid refrigeration medium, the high-temperature high-pressure liquid refrigeration medium is pressed into a condenser, a coil end of the condensing fan relay attracts a load end contact of the condensing fan relay after receiving the starting signals sent by the controller, the load end contact of the condensing fan relay attracts and is communicated with a condensing fan power supply circuit, the condensing fan starts to work, after the condensing fan starts to work, the condenser exchanges heat, the high-temperature high-pressure liquid refrigeration medium in the condenser is cooled into a medium-temperature high-pressure refrigeration medium, the medium-temperature high-pressure refrigeration medium is pushed into an expansion valve by the pressure generated by the parking compressor to be expanded into a low-temperature low-pressure gaseous refrigeration medium, the low-temperature low-pressure gaseous refrigeration medium is pushed into the evaporator by the pressure generated by the parking compressor, the evaporator exchanges heat through air flow generated when the blower works, and meanwhile, the refrigeration medium in the evaporator returns to the parking compressor to complete refrigeration cycle;
the seventh step: closing the parking refrigeration mode, sending stop signals to a parking compressor and a condensing fan relay by a controller when the parking refrigeration mode closing condition is met, stopping the parking compressor after receiving the stop signals, releasing a load end contact of the condensing fan relay after a coil end of the condensing fan relay receives the stop signals sent by the controller, and stopping the condensing fan;
eighth step: and turning off the air conditioner, stopping the running compressor or the parking compressor when the following conditions are met, and automatically exiting the running refrigeration mode or the parking refrigeration mode by the vehicle:
a) the driver manually turns off the air conditioner refrigeration switch,
b) when the voltage value of the storage battery is equal to or less than a voltage threshold value preset by the controller;
when the driver manually sets the gear of the speed regulating module to be 0, the blower stops working.
In the seventh step, the controller sends a stop signal when any one of the following conditions is met:
a) the controller detects that the voltage value of the storage battery is equal to or less than a voltage threshold value preset by the controller,
b) the controller detects the turn-off signal of the air conditioner refrigeration switch,
c) the controller detects that the speed regulating module is in a closed state,
d) the controller detects that the ambient temperature is equal to or less than a target temperature value preset by the controller,
e) the controller detects that the engine speed is greater than or equal to an engine speed threshold value set by the controller;
and the speed regulating module in the sixth step of parking refrigeration mode can send a speed regulating signal to the controller, and the controller sends a control signal to regulate the rotating speed of the parking compressor after receiving the speed regulating signal.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the traveling and parking integrated air conditioner and the control system thereof, the traveling compressor and the parking compressor share one set of condenser and evaporator, the air conditioner control system controls the vehicle to select different air conditioner modes under different conditions, so that the effect of economically operating the air conditioner is achieved, meanwhile, the two sets of compressors share one set of condenser and evaporator, the complexity of the system can be effectively reduced, the space occupation is reduced, and the usable space of the vehicle is improved. Therefore, the design can automatically judge the air conditioner mode, realize the effect of economically operating the air conditioner, simultaneously reduce the space occupation of the air conditioning system, improve the available space of the cab and effectively improve the comfort of the driver.
2. The traveling and parking integrated air conditioner and the control system thereof utilize the storage battery as a power source of the parking air conditioner mode, and do not need the cooperation of the fuel generator in the use process, thereby reducing the waste gas emission of vehicles under the parking condition, reducing the environmental pollution, avoiding the vibration and the noise of the fuel generator under the parking condition without using the fuel generator, and improving the use comfort of users. Therefore, the design can reduce the exhaust emission, reduce the environmental pollution, reduce the vibrations and the noise of parking air conditioning system simultaneously, effectively improve user experience travelling comfort.
3. According to the traveling and parking integrated air conditioner and the control system thereof, the controller detects the switch signal sent by the air conditioner refrigeration switch, the speed regulating signal sent by the speed regulating module, the indoor temperature signal sent by the indoor temperature sensor, the voltage value of the storage battery 11 and the engine rotating speed so as to automatically judge the working mode of the air conditioner, the operation of a driver is reduced, and the automation and intelligentization degree of a vehicle is improved. Therefore, the design can automatically judge the working mode of the air conditioner, reduce the operation of a driver and has high automation and intelligence degree.
4. The traveling and parking integrated air conditioner and the control system thereof are connected with the parking compressor in parallel and the condensing fan is added on the basis of the traditional traveling air conditioning system, and have simple mechanical structure and high reliability; meanwhile, the parking compressor and the traveling compressor are controlled by the same controller, and the control principle is simple and easy to realize. Therefore, the parking compressor and the condensing fan are only added on the basis of the traditional air conditioning system, the mechanical structure is simple, the reliability is high, and meanwhile, the control principle is simple and easy to realize.
5. The controller in the traveling and parking integrated air conditioner and the control system thereof enters a traveling refrigeration mode when the rotating speed of an engine is more than or equal to 500rpm, the traveling air conditioner can be used for refrigeration under the in-situ idling condition, the phenomenon that the battery is used for supplying power to an air conditioning system for a long time, the endurance capacity of the battery is reduced, and the service life of the battery is shortened is avoided. Therefore, the design can use a driving refrigeration mode under the condition of in-situ idling, stop consuming the electric energy of the storage battery, improve the endurance capacity of the storage battery and prolong the service life of the storage battery.
6. The controller in the traveling and parking integrated air conditioner and the control system thereof can use other controllers to replace an air conditioner controller. Therefore, the design can reduce the requirements on the performance of the air conditioner controller, reduce the cost of the air conditioner controller and improve the economy.
Drawings
FIG. 1 is a schematic diagram of piping and control signals according to the present invention.
Fig. 2 is an electrical schematic of the present invention.
In the figure: the system comprises a driving compressor 1, a parking compressor 2, a compressor relay 3, a condensing fan 4, a condensing fan relay 5, a blower 6, a blower relay 7, a controller 8, an air-conditioning refrigeration switch 9, a speed regulating module 10, a storage battery 11, a power main switch 12, a one-way valve 13, a condenser 14, an expansion valve 15, an evaporator 16, a three-way joint 17 and an indoor temperature sensor 18.
Detailed Description
The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 to 2, a row and park integrated air conditioner includes: the system comprises a driving compressor 1, a parking compressor 2, a compressor relay 3, a condensing fan 4, a condensing fan relay 5, a blower 6, a blower relay 7, a controller 8, an air-conditioning refrigeration switch 9, a speed regulating module 10, a storage battery 11, a power main switch 12, a one-way valve 13, a condenser 14, an expansion valve 15, an evaporator 16, a three-way joint 17 and an indoor temperature sensor 18; the traveling compressor 1 is a power take-off compressor, the parking compressor 2 is an electric compressor, the check valve 13 is a two-in one-out check valve, and the compressor relay 3, the condensing fan relay 5 and the blower relay 7 are all normally open relays; the liquid outlet end of the travelling crane compressor 1 is communicated with one liquid inlet end of a one-way valve 13, the liquid outlet end of the parking compressor 2 is communicated with the other liquid inlet end of the one-way valve 13, the liquid outlet end of the one-way valve 13 is communicated with the liquid inlet end of a condenser 14, the liquid outlet end of the condenser 14 is communicated with the liquid inlet end of an expansion valve 15, the gas outlet end of the expansion valve 15 is communicated with the gas inlet end of an evaporator 16, the gas outlet end of the evaporator 16 is communicated with the gas inlet end of a three-way joint 17, one gas outlet end of the three-way joint 17 is communicated with the gas inlet end of the travelling crane compressor 1, the other gas outlet end of the three-way joint 17 is communicated with the gas inlet end of the parking compressor 2, the air outlet of the condensing fan 4 is arranged opposite to the condenser 14, and the air outlet of the air blower 6 is arranged opposite to the evaporator 16; the control circuit of the traveling and parking integrated air conditioner comprises the following steps: the positive pole of the storage battery 11 is connected with the power end of a power main switch 12, the negative pole of the storage battery 11 is connected with a traveling crane compressor 1, a contact group of a compressor relay 3 and a contact group of a blower relay 7 in series in sequence and then connected with the load end of the power main switch 12, the negative pole of the storage battery 11 is connected with a parking compressor 2 in series and then connected with the load end of the power main switch 12, the negative pole of the storage battery 11 is connected with a coil of the blower relay 7 in series and then connected with the load end of the power main switch 12, the negative pole of the storage battery 11 is connected with the negative pole terminal of a controller 8 in series and then connected with a speed regulating module 10, a blower 6 and the contact group of the blower relay 7 in series and then connected with the load end of the power main switch 12, the control end of the compressor of the controller 8 is connected with the load end of the air-conditioning refrigeration switch 9 and the coil of the compressor relay 3 in series and then connected with the load end of the power main switch 12 in sequence, the control end of the condensing fan of the controller 8 is connected with the coil of the condensing fan relay 5 in series and then is connected with the load end of the power main switch 12, and the negative electrode of the storage battery 11 is connected with the contact group of the condensing fan 4 and the condensing fan relay 5 in series in sequence and then is connected with the load end of the power main switch 12; parking of parking compressor 2 stops signal input part and controller 8 stops to stop the signal output part and is connected, parking control signal input part of parking compressor 2 is connected with controller 8's parking control signal output part, controller 8's speed governing signal input part is connected with speed governing signal output part of speed governing module 10, the temperature signal output part of indoor temperature sensor 18 is connected with controller 8's temperature signal input part.
The controller 8 is a controller which can set an engine speed threshold value, a voltage threshold value and a target temperature value and send out a control signal.
The controller 8 is an air conditioner controller or a BCM.
The controller 8, the air-conditioning refrigeration switch 9 and the speed regulation module 10 are arranged on an instrument desk of the automobile cab; the parking compressor 2 and the condensing fan 4 are arranged on the automobile chassis; the expansion valve 15, the evaporator 16 and the indoor temperature sensor 18 are disposed in the vehicle cabin.
A control method of a traveling and parking integrated air conditioner comprises the following steps:
the first step is as follows: setting parameters, the controller 8 sets preset parameters in the factory stage, and the preset parameters include: an engine rotating speed threshold value and a storage battery voltage threshold value;
the second step is that: the method comprises the steps of starting an air conditioner, namely, after a driver turns on a power main switch 12, the vehicle is powered on, a coil of a blower relay 7 is powered on, the coil of the blower relay 7 is powered on and then attracts a load end contact of the blower relay 7, at the moment, a speed regulating module 10 is set to be in a non-0 gear, the blower 6 starts to work, and the air conditioner enters a judging work mode;
the third step: judging the working mode, wherein a driver turns on a refrigeration switch 9 and sets the target temperature in the vehicle on a setting controller 8, and the controller 8 detects a switching signal sent by an air-conditioning refrigeration switch 9, a speed regulating signal sent by a speed regulating module 10, an indoor temperature signal sent by an indoor temperature sensor 18, the voltage value of a storage battery 11 and the engine rotating speed in a certain period to comprehensively judge the working mode of the air conditioner;
when the following conditions are simultaneously satisfied by the signal detected by the controller 8, the fourth-step-driving refrigeration mode is entered:
a) the air-conditioning refrigeration switch 9 is turned on,
b) the gear set by the speed regulation module 10 is not 0,
c) the voltage value of the battery 11 is equal to or greater than the battery voltage threshold value,
d) the engine speed is greater than or equal to the threshold engine speed set by the controller 8,
e) the indoor temperature is greater than a preset target temperature value in the vehicle;
when the following conditions are simultaneously satisfied by the signal detected by the controller 8, the sixth step parking cooling mode is entered:
a) the air-conditioning refrigeration switch 9 is turned on,
b) the gear set by the speed regulation module 10 is not 0,
c) the voltage value of the battery 11 is equal to or greater than the battery voltage threshold value,
d) the engine speed is less than the engine speed threshold set by the controller 8,
e) the indoor temperature is greater than a preset target temperature value in the vehicle;
when the signal detected by the controller 8 does not satisfy the condition for entering the driving refrigeration mode and does not satisfy the condition for entering the parking refrigeration mode, the current working state is maintained;
the fourth step: in the driving refrigeration mode, when the controller 8 judges that the vehicle enters the driving refrigeration mode, the controller 8 sends a low level signal to drive the compressor relay 3 to work, a coil of the compressor relay 3 is electrified, the coil of the compressor relay 3 is electrified to attract a load end contact of the compressor relay 3, the driving compressor 1 starts to work after the load end contact of the compressor relay 3 is attracted, the gaseous refrigeration medium is pressurized into a high-temperature high-pressure liquid refrigeration medium after the driving compressor 1 works, the high-temperature high-pressure liquid refrigeration medium is pressed into the condenser 14, the high-temperature high-pressure liquid refrigeration medium in the condenser 14 is cooled into a medium-temperature high-pressure refrigeration medium through the head-on wind in the driving process, the medium-temperature high-pressure refrigeration medium is pushed by the pressure generated by the driving compressor 1 to enter the expansion valve 15 to be expanded into a low-temperature low-pressure gaseous refrigeration medium, and the low-temperature low-pressure gaseous refrigeration medium is pushed by the pressure generated by the driving compressor 1 to enter the evaporator 16, the evaporator 16 exchanges heat through airflow generated when the blower 6 works, and meanwhile, a refrigeration medium in the evaporator 16 returns to the traveling crane compressor 1 to complete refrigeration cycle;
the fifth step: the driving refrigeration mode is closed, when a driver closes the air conditioner refrigeration switch 9, the coil end of the compressor relay 3 is powered off, the coil end of the compressor relay 3 releases the load end contact of the compressor relay 3 after being powered off, and the driving compressor 1 stops working;
and a sixth step: in the parking refrigeration mode, after a vehicle enters the parking refrigeration mode, the controller 8 sends a driving signal to the parking compressor 2 and the condensing fan relay 5, the parking compressor 2 starts to work after receiving the driving signal, the gaseous refrigeration medium is pressurized into a high-temperature high-pressure liquid refrigeration medium after the parking compressor 2 works, the high-temperature high-pressure liquid refrigeration medium is pressed into the condenser 14, a coil end of the condensing fan relay 5 attracts a load end contact of the condensing fan relay 5 after receiving the starting signal sent by the controller 8, the load end contact of the condensing fan relay 5 attracts and is communicated with a power supply circuit of the condensing fan 4, the condensing fan 4 starts to work, the condensing fan 4 exchanges heat with the condenser 14 after starting to work, the high-temperature high-pressure liquid refrigeration medium in the condenser 14 is cooled into a medium-temperature high-pressure refrigeration medium, the medium-temperature high-pressure refrigeration medium is pushed by the pressure generated by the parking compressor 2 to enter the expansion valve 15 to expand into a low-temperature low-pressure gaseous refrigeration medium, and the heat is transferred into the condenser 14 The low-temperature low-pressure gaseous refrigeration medium is pushed by the pressure generated by the parking compressor 2 to enter the evaporator 16, the evaporator 16 exchanges heat through air flow generated when the blower 6 works, and meanwhile, the refrigeration medium in the evaporator 16 returns to the parking compressor 2 to complete refrigeration cycle;
the seventh step: closing the parking refrigeration mode, when the parking refrigeration mode closing condition is met, sending a stop signal to the parking compressor 2 and the condensing fan relay 5 by the controller 8, stopping the parking compressor 2 after receiving the stop signal, releasing a load end contact of the condensing fan relay 5 after a coil end of the condensing fan relay 5 receives the stop signal sent by the controller 8, and stopping the condensing fan 4;
eighth step: and turning off the air conditioner, stopping the running compressor 1 or the parking compressor 2 when the following conditions are met, and automatically exiting the running refrigeration mode or the parking refrigeration mode by the vehicle:
a) the driver manually turns off the air conditioner cooling switch 9,
b) when the voltage value of the storage battery 11 is equal to or less than the voltage threshold value preset by the controller 8;
when the driver manually sets the gear of the speed regulating module 10 to 0, the blower stops working.
In the seventh step, the controller 8 sends a stop signal when any one of the following conditions is satisfied:
a) the controller 8 detects that the voltage value of the battery 11 is equal to or less than a voltage threshold value preset by the controller 8,
b) the controller 8 detects the off signal of the air conditioner cooling switch 9,
c) the controller 8 detects that the throttle module 10 is in the off state,
d) the controller 8 detects that the ambient temperature is equal to or less than a target temperature value preset by the controller 8,
e) the controller 8 detects that the engine speed is greater than or equal to an engine speed threshold value set by the controller 8;
and the speed regulating module 10 in the sixth step parking refrigeration mode can send a speed regulating signal to the controller 8, and the controller 8 sends a control signal to regulate the rotating speed of the parking compressor 2 after receiving the speed regulating signal.
The principle of the invention is illustrated as follows:
in the driving refrigeration mode and the parking refrigeration mode, the refrigeration medium is circulated in the air-conditioning pipeline, and the heat transfer is realized through the gasification and liquefaction of the refrigeration medium.
The driving compressor 1 and the parking compressor 2 are connected in parallel through the check valve 13 and the three-way joint 17 to share one set of the condenser 14 and the evaporator 16, and the check valve 13 can prevent the refrigeration medium from flowing back into the other compressor when one compressor pressurizes the refrigeration medium, so that the compressors are damaged.
The condensing fan 4 is started only in the parking refrigeration mode, and the cooling medium in the condenser 14 is cooled only by using the windward in the driving process in the driving refrigeration mode.
Example 1:
the row and parking integrated air conditioner comprises: the system comprises a driving compressor 1, a parking compressor 2, a compressor relay 3, a condensing fan 4, a condensing fan relay 5, a blower 6, a blower relay 7, a controller 8, an air-conditioning refrigeration switch 9, a speed regulating module 10, a storage battery 11, a power main switch 12, a one-way valve 13, a condenser 14, an expansion valve 15, an evaporator 16, a three-way joint 17 and an indoor temperature sensor 18; the traveling compressor 1 is a power take-off compressor, the parking compressor 2 is an electric compressor, the check valve 13 is a two-in one-out check valve, and the compressor relay 3, the condensing fan relay 5 and the blower relay 7 are all normally open relays; the liquid outlet end of the travelling crane compressor 1 is communicated with one liquid inlet end of a one-way valve 13, the liquid outlet end of the parking compressor 2 is communicated with the other liquid inlet end of the one-way valve 13, the liquid outlet end of the one-way valve 13 is communicated with the liquid inlet end of a condenser 14, the liquid outlet end of the condenser 14 is communicated with the liquid inlet end of an expansion valve 15, the gas outlet end of the expansion valve 15 is communicated with the gas inlet end of an evaporator 16, the gas outlet end of the evaporator 16 is communicated with the gas inlet end of a three-way joint 17, one gas outlet end of the three-way joint 17 is communicated with the gas inlet end of the travelling crane compressor 1, the other gas outlet end of the three-way joint 17 is communicated with the gas inlet end of the parking compressor 2, the air outlet of the condensing fan 4 is arranged opposite to the condenser 14, and the air outlet of the air blower 6 is arranged opposite to the evaporator 16; the control circuit of the traveling and parking integrated air conditioner comprises the following steps: the positive pole of the storage battery 11 is connected with the power end of a power main switch 12, the negative pole of the storage battery 11 is connected with a traveling crane compressor 1, a contact group of a compressor relay 3 and a contact group of a blower relay 7 in series in sequence and then connected with the load end of the power main switch 12, the negative pole of the storage battery 11 is connected with a parking compressor 2 in series and then connected with the load end of the power main switch 12, the negative pole of the storage battery 11 is connected with a coil of the blower relay 7 in series and then connected with the load end of the power main switch 12, the negative pole of the storage battery 11 is connected with the negative pole terminal of a controller 8 in series and then connected with a speed regulating module 10, a blower 6 and the contact group of the blower relay 7 in series and then connected with the load end of the power main switch 12, the control end of the compressor of the controller 8 is connected with the load end of the air-conditioning refrigeration switch 9 and the coil of the compressor relay 3 in series and then connected with the load end of the power main switch 12 in sequence, the control end of the condensing fan of the controller 8 is connected with the coil of the condensing fan relay 5 in series and then is connected with the load end of the power main switch 12, and the negative electrode of the storage battery 11 is connected with the contact group of the condensing fan 4 and the condensing fan relay 5 in series in sequence and then is connected with the load end of the power main switch 12; the parking start-stop signal input end of the parking compressor 2 is connected with the parking start-stop signal output end of the controller 8, the parking control signal input end of the parking compressor 2 is connected with the parking control signal output end of the controller 8, the speed regulation signal input end of the controller 8 is connected with the speed regulation signal output end of the speed regulation module 10, and the temperature signal output end of the indoor temperature sensor 18 is connected with the temperature signal input end of the controller 8; the controller 8 is a controller which can set an engine rotating speed threshold value, a voltage threshold value and a target temperature value and send out a control signal;
a control method of a traveling and parking integrated air conditioner comprises the following steps:
the first step is as follows: setting parameters, the controller 8 sets preset parameters in the factory stage, and the preset parameters include: an engine rotating speed threshold value and a storage battery voltage threshold value;
the second step is that: the method comprises the steps of starting an air conditioner, namely, after a driver turns on a power main switch 12, the vehicle is powered on, a coil of a blower relay 7 is powered on, the coil of the blower relay 7 is powered on and then attracts a load end contact of the blower relay 7, at the moment, a speed regulating module 10 is set to be in a non-0 gear, the blower 6 starts to work, and the air conditioner enters a judging work mode;
the third step: judging the working mode, wherein a driver turns on a refrigeration switch 9 and sets the target temperature in the vehicle on a setting controller 8, and the controller 8 detects a switching signal sent by an air-conditioning refrigeration switch 9, a speed regulating signal sent by a speed regulating module 10, an indoor temperature signal sent by an indoor temperature sensor 18, the voltage value of a storage battery 11 and the engine rotating speed in a certain period to comprehensively judge the working mode of the air conditioner;
when the following conditions are simultaneously satisfied by the signal detected by the controller 8, the fourth-step-driving refrigeration mode is entered:
a) the air-conditioning refrigeration switch 9 is turned on,
b) the gear set by the speed regulation module 10 is not 0,
c) the voltage value of the battery 11 is equal to or greater than the battery voltage threshold value,
d) the engine speed is greater than or equal to the threshold engine speed set by the controller 8,
e) the indoor temperature is greater than a preset target temperature value in the vehicle;
when the following conditions are simultaneously satisfied by the signal detected by the controller 8, the sixth step parking cooling mode is entered:
a) the air-conditioning refrigeration switch 9 is turned on,
b) the gear set by the speed regulation module 10 is not 0,
c) the voltage value of the battery 11 is equal to or greater than the battery voltage threshold value,
d) the engine speed is less than the engine speed threshold set by the controller 8,
e) the indoor temperature is greater than a preset target temperature value in the vehicle;
when the signal detected by the controller 8 does not satisfy the condition for entering the driving refrigeration mode and does not satisfy the condition for entering the parking refrigeration mode, the current working state is maintained;
the fourth step: in the driving refrigeration mode, when the controller 8 judges that the vehicle enters the driving refrigeration mode, the controller 8 sends a low level signal to drive the compressor relay 3 to work, a coil of the compressor relay 3 is electrified, the coil of the compressor relay 3 is electrified to attract a load end contact of the compressor relay 3, the driving compressor 1 starts to work after the load end contact of the compressor relay 3 is attracted, the gaseous refrigeration medium is pressurized into a high-temperature high-pressure liquid refrigeration medium after the driving compressor 1 works, the high-temperature high-pressure liquid refrigeration medium is pressed into the condenser 14, the high-temperature high-pressure liquid refrigeration medium in the condenser 14 is cooled into a medium-temperature high-pressure refrigeration medium through the head-on wind in the driving process, the medium-temperature high-pressure refrigeration medium is pushed by the pressure generated by the driving compressor 1 to enter the expansion valve 15 to be expanded into a low-temperature low-pressure gaseous refrigeration medium, and the low-temperature low-pressure gaseous refrigeration, the evaporator 16 exchanges heat through airflow generated when the blower 6 works, and meanwhile, a refrigeration medium in the evaporator 16 returns to the traveling crane compressor 1 to complete refrigeration cycle;
the fifth step: the driving refrigeration mode is closed, when a driver closes the air conditioner refrigeration switch 9, the coil end of the compressor relay 3 is powered off, the coil end of the compressor relay 3 releases the load end contact of the compressor relay 3 after being powered off, and the driving compressor 1 stops working;
and a sixth step: in the parking refrigeration mode, after a vehicle enters the parking refrigeration mode, the controller 8 sends a driving signal to the parking compressor 2 and the condensing fan relay 5, the parking compressor 2 starts to work after receiving the driving signal, the gaseous refrigeration medium is pressurized into a high-temperature high-pressure liquid refrigeration medium after the parking compressor 2 works, the high-temperature high-pressure liquid refrigeration medium is pressed into the condenser 14, a coil end of the condensing fan relay 5 attracts a load end contact of the condensing fan relay 5 after receiving the starting signal sent by the controller 8, the load end contact of the condensing fan relay 5 attracts and is communicated with a power supply circuit of the condensing fan 4, the condensing fan 4 starts to work, the condensing fan 4 exchanges heat with the condenser 14 after starting to work, the high-temperature high-pressure liquid refrigeration medium in the condenser 14 is cooled into a medium-temperature high-pressure refrigeration medium, the medium-temperature high-pressure refrigeration medium is pushed by the pressure generated by the parking compressor 2 to enter the expansion valve 15 to expand into a low-temperature low-pressure gaseous refrigeration medium, and the heat is transferred into the condenser 14 The low-temperature low-pressure gaseous refrigeration medium is pushed by the pressure generated by the parking compressor 2 to enter the evaporator 16, the evaporator 16 exchanges heat through air flow generated when the blower 6 works, and meanwhile, the refrigeration medium in the evaporator 16 returns to the parking compressor 2 to complete refrigeration cycle;
the seventh step: closing the parking refrigeration mode, when the parking refrigeration mode closing condition is met, sending a stop signal to the parking compressor 2 and the condensing fan relay 5 by the controller 8, stopping the parking compressor 2 after receiving the stop signal, releasing a load end contact of the condensing fan relay 5 after a coil end of the condensing fan relay 5 receives the stop signal sent by the controller 8, and stopping the condensing fan 4;
eighth step: and turning off the air conditioner, stopping the running compressor 1 or the parking compressor 2 when the following conditions are met, and automatically exiting the running refrigeration mode or the parking refrigeration mode by the vehicle:
a) the driver manually turns off the air conditioner cooling switch 9,
b) when the voltage value of the storage battery 11 is equal to or less than the voltage threshold value preset by the controller 8;
when a driver manually sets the gear of the speed regulating module 10 to be 0, the blower stops working;
in the seventh step, the controller 8 sends a stop signal when any one of the following conditions is satisfied:
a) the controller 8 detects that the voltage value of the battery 11 is equal to or less than a voltage threshold value preset by the controller 8,
b) the controller 8 detects the off signal of the air conditioner cooling switch 9,
c) the controller 8 detects that the throttle module 10 is in the off state,
d) the controller 8 detects that the ambient temperature is equal to or less than a target temperature value preset by the controller 8,
e) the controller 8 detects that the engine speed is greater than or equal to an engine speed threshold value set by the controller 8;
and the speed regulating module 10 in the sixth step parking refrigeration mode can send a speed regulating signal to the controller 8, and the controller 8 sends a control signal to regulate the rotating speed of the parking compressor 2 after receiving the speed regulating signal.
Example 2:
example 3 is substantially the same as example 2 except that:
the controller 8 is an air conditioner controller or a BCM.
Example 3:
example 3 is substantially the same as example 2 except that:
the controller 8, the air-conditioning refrigeration switch 9 and the speed regulation module 10 are arranged on an instrument desk of the automobile cab; the parking compressor 2 and the condensing fan 4 are arranged on the automobile chassis; the expansion valve 15, the evaporator 16 and the indoor temperature sensor 18 are disposed in the vehicle cabin.
Claims (9)
1. The utility model provides a move and reside in integral type air conditioner which characterized in that:
the row and parking integrated air conditioner comprises: the system comprises a travelling crane compressor (1), a parking compressor (2), a compressor relay (3), a condensing fan (4), a condensing fan relay (5), an air blower (6), an air blower relay (7), a controller (8), an air conditioner refrigeration switch (9), a speed regulation module (10), a storage battery (11), a power supply main switch (12), a one-way valve (13), a condenser (14), an expansion valve (15), an evaporator (16), a three-way joint (17) and an indoor temperature sensor (18); the traveling compressor (1) is a power take-off compressor, the parking compressor (2) is an electric compressor, the check valve (13) is a two-in one-out check valve, and the compressor relay (3), the condensing fan relay (5) and the blower relay (7) are normally open relays; the play liquid end of driving compressor (1) and one of them feed liquor end of check valve (13) communicate mutually, the play liquid end of parking compressor (2) and another feed liquor end of check valve (13) communicate mutually, the play liquid end of check valve (13) and the feed liquor end of condenser (14) communicate mutually, the play liquid end of condenser (14) and the feed liquor end of expansion valve (15) communicate mutually, the end of giving vent to anger of expansion valve (15) communicates mutually with the inlet end of evaporimeter (16), the end of giving vent to anger of evaporimeter (16) communicates mutually with the inlet end of three way connection (17), one of them of three way connection (17) is given vent to anger the end and is communicated mutually with the inlet end of driving compressor (1), another end of giving vent to anger of three way connection (17) communicates mutually with the inlet end of parking compressor (2), the air outlet of condensing fan (4) is just to condenser (14) setting, the air outlet of the air blower (6) is arranged right opposite to the evaporator (16);
the control circuit of the traveling and parking integrated air conditioner comprises the following steps:
the positive pole of the storage battery (11) is connected with the power end of a power supply main switch (12), the negative pole of the storage battery (11) is connected with the load end of the power supply main switch (12) in series after being sequentially connected with a travelling crane compressor (1), a contact group of a compressor relay (3) and a contact group of a blower relay (7), the negative pole of the storage battery (11) is connected with the load end of a parking compressor (2) in series and then connected with the load end of the power supply main switch (12), the negative pole of the storage battery (11) is connected with the coil of the blower relay (7) in series and then connected with the load end of the power supply main switch (12), the negative pole of the storage battery (11) is connected with the speed regulating module (10), the blower (6) and the contact group of the blower relay (7) in series and then connected with the load end of the power supply main switch (12), and the negative pole of the storage battery (11) is connected with the negative pole terminal of a controller (8), the control end of a compressor of the controller (8) is sequentially connected with coils of an air-conditioning refrigeration switch (9) and a compressor relay (3) in series and then connected with the load end of a power supply main switch (12), the control end of a condensing fan of the controller (8) is connected with a coil of a condensing fan relay (5) in series and then connected with the load end of the power supply main switch (12), and the negative electrode of the storage battery (11) is sequentially connected with a contact group of a condensing fan (4) and the condensing fan relay (5) in series and then connected with the load end of the power supply main switch (12);
the parking of parking compressor (2) is stopped and is stopped signal input part and the parking of controller (8) and is stopped signal output part and be connected, the parking control signal input part of parking compressor (2) is connected with the parking control signal output part of controller (8), the speed governing signal input part of controller (8) is connected with the speed governing signal output part of speed governing module (10), the temperature signal output part of indoor temperature sensor (18) is connected with the temperature signal input part of controller (8).
2. The integrated traveling and parking air conditioner according to claim 1, wherein:
the controller (8) is a controller which can set an engine rotating speed threshold value, a voltage threshold value and a target temperature value and send out a control signal.
3. The integrated traveling and parking air conditioner according to claim 2, wherein:
the controller (8) is an air conditioner controller or a BCM.
4. The integrated traveling and parking air conditioner according to claim 3, wherein:
the controller (8), the air-conditioning refrigeration switch (9) and the speed regulation module (10) are arranged on an instrument desk of the automobile cab.
5. The integrated traveling and parking air conditioner according to claim 4, wherein:
the parking compressor (2) and the condensing fan (4) are arranged on the automobile chassis.
6. The integrated traveling and parking air conditioner according to claim 5, wherein:
the expansion valve (15), the evaporator (16) and the indoor temperature sensor (18) are arranged in an automobile cab.
7. A control method of a row and park integrated air conditioner according to any one of claims 1 to 6, characterized in that:
the control method comprises the following steps:
the first step is as follows: setting parameters, wherein the controller (8) sets preset parameters in a factory stage, and the preset parameters comprise: an engine rotating speed threshold value and a storage battery voltage threshold value;
the second step is that: the method comprises the steps of starting an air conditioner, wherein after a driver turns on a power main switch (12), a vehicle is powered on, a coil of a blower relay (7) is powered on, the coil of the blower relay (7) is powered on and then attracts a load end contact of the blower relay (7), at the moment, a speed regulating module (10) is set to be in a non-0 gear, the blower (6) starts to work, and the air conditioner enters a judging working mode;
the third step: judging the working mode, wherein a driver turns on a refrigeration switch (9) and sets the target temperature in the vehicle on a setting controller (8), and the controller (8) detects a switching signal sent by the air-conditioning refrigeration switch (9), a speed regulating signal sent by a speed regulating module (10), an indoor temperature signal sent by an indoor temperature sensor (18), the voltage value of a storage battery (11) and the rotating speed of an engine in a certain period to comprehensively judge the air-conditioning working mode;
and when the signals detected by the controller (8) simultaneously meet the following conditions, entering a fourth walking vehicle refrigeration mode:
a) the air-conditioning refrigeration switch (9) is turned on,
b) the gear set by the speed regulating module (10) is not 0,
c) the voltage value of the storage battery (11) is larger than or equal to the storage battery voltage threshold value,
d) the engine speed is more than or equal to an engine speed threshold value set by the controller (8),
e) the indoor temperature is greater than a preset target temperature value in the vehicle;
and when the signals detected by the controller (8) simultaneously meet the following conditions, entering a sixth step parking refrigeration mode:
a) the air-conditioning refrigeration switch (9) is turned on,
b) the gear set by the speed regulating module (10) is not 0,
c) the voltage value of the storage battery (11) is larger than or equal to the storage battery voltage threshold value,
d) the engine speed is less than the threshold value of the engine speed set by the controller (8),
e) the indoor temperature is greater than a preset target temperature value in the vehicle;
when the signal detected by the controller (8) does not meet the condition for entering the driving refrigeration mode and does not meet the condition for entering the parking refrigeration mode, the current working state is maintained;
the fourth step: in the driving refrigeration mode, when the controller (8) judges that the vehicle enters the driving refrigeration mode, the controller (8) sends a low level signal to drive the compressor relay (3) to work, a coil of the compressor relay (3) is electrified to attract a load end contact of the compressor relay (3), the driving compressor (1) starts to work after the load end contact of the compressor relay (3) is attracted, the gaseous refrigeration medium is pressurized into the high-temperature high-pressure liquid refrigeration medium after the driving compressor (1) works, the high-temperature high-pressure liquid refrigeration medium is pressed into the condenser (14), the high-temperature high-pressure liquid refrigeration medium in the condenser (14) is cooled into the medium-temperature high-pressure refrigeration medium through the head-on wind in the driving process, the medium-temperature high-pressure refrigeration medium is pushed into the expansion valve (15) by the pressure generated by the driving compressor (1) to expand into the low-temperature low, the low-temperature low-pressure gaseous refrigeration medium is pushed into the evaporator (16) by the pressure generated by the traveling crane compressor (1), the evaporator (16) exchanges heat through airflow generated when the blower (6) works, and meanwhile, the refrigeration medium in the evaporator (16) returns to the traveling crane compressor (1) to complete refrigeration cycle;
the fifth step: the driving refrigeration mode is closed, when a driver closes the air conditioner refrigeration switch, the coil end of the compressor relay is powered off, the coil end of the compressor relay releases the contact of the load end of the compressor relay after being powered off, and the driving compressor stops working;
and a sixth step: the parking refrigeration mode is characterized in that after a vehicle enters the parking refrigeration mode, a controller (8) sends a driving signal to a parking compressor (2) and a condensing fan relay (5), the parking compressor (2) starts to work after receiving the driving signal, a gaseous refrigeration medium is pressurized into a high-temperature high-pressure liquid refrigeration medium after the parking compressor (2) works, the high-temperature high-pressure liquid refrigeration medium is pressed into a condenser (14), a coil end of the condensing fan relay (5) attracts a load end contact of the condensing fan relay (5) after receiving the starting signal sent by the controller (8), the load end contact of the condensing fan relay (5) attracts and is communicated with a power supply circuit of the condensing fan (4), the condensing fan (4) starts to work, the condensing fan (4) exchanges heat with the condenser (14) after starting to work, and the high-temperature high-pressure liquid refrigeration medium in the condenser (14) is cooled into a medium temperature high-pressure refrigeration medium, the medium-temperature high-pressure refrigeration medium is pushed by the pressure generated by the parking compressor (2) to enter the expansion valve (15) to be expanded into a low-temperature low-pressure gaseous refrigeration medium, the low-temperature low-pressure gaseous refrigeration medium is pushed by the pressure generated by the parking compressor (2) to enter the evaporator (16), the evaporator (16) exchanges heat through air flow generated when the air blower (6) works, and meanwhile, the refrigeration medium in the evaporator (16) returns to the parking compressor (2) to complete refrigeration cycle;
the seventh step: closing the parking refrigeration mode, when the parking refrigeration mode closing condition is met, sending a stop signal to a parking compressor (2) and a condensing fan relay (5) by a controller (8), stopping the parking compressor (2) after receiving the stop signal, releasing a load end contact of the condensing fan relay (5) after a coil end of the condensing fan relay (5) receives the stop signal sent by the controller (8), and stopping the condensing fan (4);
eighth step: and turning off the air conditioner, stopping the operation of the running compressor (1) or the parking compressor (2) when the following conditions are met, and automatically exiting the running refrigeration mode or the parking refrigeration mode by the vehicle:
a) the driver manually closes the air-conditioning refrigeration switch (9),
b) when the voltage value of the storage battery (11) is equal to or less than a preset voltage threshold value of the controller (8);
when the driver manually sets the gear of the speed regulating module (10) to be 0, the blower stops working.
8. The control method of the traveling and parking integrated air conditioner as claimed in claim 7, wherein:
in the seventh step, the controller (8) sends a stop signal when any one of the following conditions is met:
a) the controller (8) detects that the voltage value of the storage battery (11) is equal to or less than a preset voltage threshold value of the controller (8),
b) the controller (8) detects the turn-off signal of the air-conditioning refrigeration switch (9),
c) the controller (8) detects that the speed regulating module (10) is in a closed state,
d) the controller (8) detects that the ambient temperature is equal to or less than a target temperature value preset by the controller (8),
e) the controller (8) detects that the engine speed is greater than or equal to an engine speed threshold value set by the controller (8).
9. The control method of the traveling and parking integrated air conditioner as claimed in claim 8, wherein:
and the speed regulating module (10) in the sixth step parking refrigeration mode can send a speed regulating signal to the controller (8), and the controller (8) sends a control signal to regulate the rotating speed of the parking compressor (2) after receiving the speed regulating signal.
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Application publication date: 20210831 |