CN113352844A - Parking air conditioner and control method thereof - Google Patents
Parking air conditioner and control method thereof Download PDFInfo
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- CN113352844A CN113352844A CN202110789352.XA CN202110789352A CN113352844A CN 113352844 A CN113352844 A CN 113352844A CN 202110789352 A CN202110789352 A CN 202110789352A CN 113352844 A CN113352844 A CN 113352844A
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- parking air
- fluorine
- outdoor fan
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- 238000000034 method Methods 0.000 title claims abstract description 16
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 135
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 135
- 239000011737 fluorine Substances 0.000 claims abstract description 135
- 238000005057 refrigeration Methods 0.000 claims abstract description 17
- 230000007812 deficiency Effects 0.000 abstract description 63
- 230000000694 effects Effects 0.000 abstract description 28
- 230000002950 deficient Effects 0.000 abstract description 5
- 239000003570 air Substances 0.000 description 107
- 239000003507 refrigerant Substances 0.000 description 9
- 238000001816 cooling Methods 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B60H1/00642—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
- B60H1/00807—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 the input being a specific way of measuring or calculating an air or coolant temperature
-
- 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
- B60H1/00978—Control systems or circuits characterised by failure of detection or safety means; Diagnostic methods
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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 provides a parking air conditioner and a control method thereof, wherein the parking air conditioner comprises a compressor, an outdoor fan, an in-vehicle environment temperature sensor, an indoor heat exchanger temperature sensor and a driving controller, wherein the driving controller is used for: when the parking air conditioner is started in a refrigeration mode, firstly, an outdoor fan is controlled to start, and after the outdoor fan runs for a first preset time, a compressor is controlled to start; after the compressor operates for a second preset time, judging that the parking air conditioner is lack of fluorine based on the currently obtained in-vehicle environment temperature value and the indoor heat exchanger temperature value; controlling the outdoor fan and the compressor to stop working based on the fluorine deficiency judgment result so as to realize the fluorine deficiency protection of the parking air conditioner; the parking air conditioner provided by the invention can realize fluorine-lacking protection control of the outdoor unit under the condition that the parking air conditioner is not seriously deficient in fluorine, so that the fluorine-lacking protection control effect is improved, and the fluorine-lacking protection control cost is reduced.
Description
Technical Field
The invention belongs to the technical field of air conditioners, and particularly relates to a parking air conditioner and a control method thereof.
Background
The parking air conditioner is an air conditioner in a vehicle, and refers to equipment which uses a vehicle-mounted storage battery direct-current power supply (12V/24V/36V) to enable the air conditioner to continuously run when a vehicle stops for waiting and has a rest, adjusts and controls the temperature, the humidity and the like of ambient air in the vehicle, and fully meets the requirement of a driver of the truck for comfortable cooling. Because parking air conditioner service environment is more complicated, jolt along with the automobile body, vibrations, transmit the interior pipeline of parking air conditioner, the damage appears easily on the part and leads to leaking fluorine, if the parking air conditioner lacks fluorine, the refrigeration effect is not good if light, unusual noise appears, influence driver's experience, more importantly, long-time operation under the fluorine-deficient state, the heat that causes the motor to produce can't be taken out by the refrigerant, exhaust temperature also can corresponding rising, when the high temperature, the refrigerant begins thermal decomposition, generate acid and water, still can make the carbon in the refrigeration oil dissociate, generate the carbon deposit, lead to lubricating oil inefficacy, the compressor does not start, the compressor damage even, and the overhead all-in-one machine is installed at truck cab top, it is also inconvenient to lack the inspection operation of fluorine problem.
In order to solve the problem caused by fluorine deficiency, a low-pressure switch is added on a suction pipe of a compressor of the existing parking air conditioner, and when the pressure is lower than a certain threshold value, the fluorine deficiency protection control of the parking air conditioner is carried out.
However, the suction pressure of the compressor changes with the change of the ambient temperature and the frequency of the compressor, so the working pressure of the low-pressure switch is not designed to be too high, which prevents the malfunction under the low-temperature environment and the low frequency of the compressor, but only when the suction pressure of the compressor is very low, that is, the parking air conditioner lacks fluorine seriously, for example, the low-pressure switch can play a role in protection when the actual refrigerant quantity of the parking air conditioner is only more than 20% of the nominal charge quantity, and the low-pressure switch can not protect in time under other fluorine deficiency conditions, for example, when the actual refrigerant quantity is only about 30% -70%, which will affect the protection effect of fluorine deficiency. And the cost of the low-pressure switch is high, so that the fluorine-lacking protection control cost of the conventional parking air conditioner is high.
Disclosure of Invention
The invention aims to provide a parking air conditioner to solve the technical problems that in the prior art, the parking air conditioner is poor in fluorine-deficiency protection control effect and high in control cost.
In order to achieve the purpose, the invention adopts the technical scheme that:
in a first aspect, the present application provides a parking air conditioner, comprising:
a compressor;
an outdoor fan;
the vehicle internal environment temperature sensor is used for detecting a vehicle internal environment temperature value;
the indoor heat exchanger temperature sensor is used for detecting the temperature value of the indoor heat exchanger;
the driving controller is connected with the in-vehicle environment temperature sensor and the indoor heat exchanger temperature sensor and is used for respectively acquiring an in-vehicle environment temperature value and an indoor heat exchanger temperature value;
the driving controller is also respectively connected with the compressor and the outdoor fan, and the working states of the compressor and the outdoor fan are controlled by the driving controller;
the drive controller is configured to:
when the parking air conditioner is started in a refrigeration mode, firstly, an outdoor fan is controlled to start, and after the outdoor fan runs for a first preset time, a compressor is controlled to start;
after the compressor operates for a second preset time, judging that the parking air conditioner is lack of fluorine based on the currently obtained in-vehicle environment temperature value and the indoor heat exchanger temperature value;
and controlling the outdoor fan and the compressor to stop working based on the fluorine shortage judgment result so as to realize the fluorine shortage protection of the parking air conditioner.
In some embodiments of the present application, the drive controller is further configured to:
after the compressor operates for a second preset time, if the currently acquired temperature value of the environment in the vehicle and the temperature value of the indoor heat exchanger meet a first protection condition, controlling the outdoor fan and the compressor to stop working;
the first protection condition is as follows: and in the first preset judgment time, the difference value between the temperature value of the environment in the vehicle and the temperature value of the indoor heat exchanger is less than or equal to a preset temperature threshold value.
In some embodiments of the present application, the method further comprises: the vehicle external environment temperature sensor is connected with the driving controller and used for detecting a vehicle external environment temperature value;
the drive controller is further configured to:
after the currently acquired temperature value of the environment inside the automobile and the temperature value of the indoor heat exchanger meet a first protection condition, if the current actual running frequency of the compressor meets a second protection condition or if the currently acquired temperature value of the environment outside the automobile and the current phase current of the compressor meet a third protection condition, controlling the outdoor fan and the compressor to stop working;
the second protection condition is as follows: within a second preset judgment time, the actual running frequency of the compressor is always greater than a preset frequency threshold value;
the third protection condition is as follows: the ambient temperature value outside the vehicle is within a preset temperature range and the phase current of the compressor is within a preset phase current range corresponding to the preset temperature range.
In some embodiments of the present application, the drive controller is further configured to:
and after the current actual operating frequency of the compressor meets the second protection condition, if the currently acquired external environment temperature value and the current phase current of the compressor meet the third protection condition, controlling the outdoor fan and the compressor to stop working.
In some embodiments of the present application, the method further comprises: and the display module is connected with the driving controller and is used for receiving the fluorine-lacking information sent by the driving controller and displaying the fluorine-lacking information.
In some embodiments of the present application, the drive controller is further configured to:
and after the outdoor fan and the compressor stop working for the third preset time, the outdoor fan and the compressor are controlled to restart, the parking air conditioner is judged to lack fluorine, if the number of fluorine-lacking faults reaches the preset number threshold value in the fourth preset time, the display module is controlled to work, and the outdoor fan and the compressor are controlled to stop working and to be overhauled.
In some embodiments of the present application, the method further comprises: and the warning module is connected with the driving controller and used for receiving warning information sent by the driving controller and giving a warning prompt when the parking air conditioner has a fluorine-lacking fault.
In some embodiments of the present application, the drive controller is further configured to:
and after the outdoor fan and the compressor stop working for a third preset time, the outdoor fan and the compressor are controlled to restart, the parking air conditioner is judged to lack fluorine, if the parking air conditioner is judged to have a fluorine lack fault in a fourth preset time and the number of fluorine lack faults does not reach a preset number threshold value, the alarm module is controlled to work, and the fourth preset time is reset to judge the parking air conditioner to lack fluorine again.
In some embodiments of the present application, the drive controller is further configured to:
and after the outdoor fan and the compressor stop running for a third preset time, controlling the outdoor fan and the compressor to restart based on the starting sequence of the outdoor fan and the compressor when the parking air conditioner is started in the refrigeration mode.
In a second aspect, the present application provides a control method of a parking air conditioner, applied to the parking air conditioner as described above, the control method comprising:
detecting an in-vehicle environment temperature value through an in-vehicle environment temperature sensor;
detecting the temperature value of the indoor heat exchanger through an indoor heat exchanger temperature sensor;
when the parking air conditioner needs to be started in a refrigeration mode, the outdoor fan is firstly controlled to be started through the driving controller, and the compressor is then controlled to be started after the outdoor fan runs for a first preset time;
after the compressor operates for a second preset time, judging that the parking air conditioner is lack of fluorine based on the currently obtained in-vehicle environment temperature value and the indoor heat exchanger temperature value;
and controlling the outdoor fan and the compressor to stop working based on the fluorine shortage judgment result so as to realize the fluorine shortage protection of the parking air conditioner.
The invention has the technical effects that:
according to the parking air conditioner, when the parking air conditioner is started in a refrigeration mode, the outdoor fan is controlled to be superior to the compressor to be started, so that the heat inside the parking air conditioner can be taken away quickly, the temperature inside the parking air conditioner is reduced, the pressure and the temperature of the whole parking air conditioner can be stabilized and balanced more quickly, the accuracy of fluorine deficiency judgment is improved, the starting load and the starting current of the compressor can be reduced, and the current impact on components is reduced; after the compressor is started and operated for a preset time, the drive controller judges that the air is lack of fluorine based on the currently obtained in-vehicle environment temperature value and the indoor heat exchanger temperature value, and controls the outdoor fan and the compressor to stop working based on the judgment result of the lack of fluorine, so that the lack of fluorine protection of the parking air conditioner is realized, the control of the lack of fluorine protection of the parking air conditioner when the actual refrigerant quantity is about 0-70% of the nominal filling quantity is realized, the control effect of the lack of fluorine protection is improved, and the control cost of the lack of fluorine protection is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a parking air conditioner according to an embodiment of the present invention;
fig. 2 is a flowchart of a control method of a parking air conditioner according to an embodiment of the present invention;
fig. 3 is a flowchart of a control method of yet another parking air conditioner according to an embodiment of the present invention;
fig. 4 is a flowchart of a control method of yet another parking air conditioner according to an embodiment of the present invention;
fig. 5 is a flowchart of a control method of yet another parking air conditioner according to an embodiment of the present invention;
in the above figures:
1. an indoor unit; 11. an indoor fan; 12. an indoor heat exchanger; 2. an outdoor unit; 21. an outdoor fan; 22. an outdoor heat exchanger; 23. a compressor; 3. connecting a pipeline; 4. an in-vehicle ambient temperature sensor; 5. an indoor heat exchanger temperature sensor; 6. an external environment temperature sensor; 7. a drive controller; 8. a display module; 9. and an alarm module.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In order to solve the technical problems of poor fluorine deficiency protection control effect and high control cost of a parking air conditioner in the prior art, the embodiment of the invention provides the parking air conditioner.
The technical solution of the present invention will be described in detail below with reference to the specific embodiments and the accompanying drawings.
Example one
Referring to fig. 1, the present embodiment provides a parking air conditioner including: the system comprises an indoor unit 1, an outdoor unit 2, a connecting pipeline 3, an in-vehicle environment temperature sensor 4, an indoor heat exchanger temperature sensor 5, an out-vehicle environment temperature sensor 6, a driving controller 7, a display module 8 and an alarm module 9. The indoor unit 1 and the outdoor unit 2 are connected through a connecting pipeline 3, the indoor unit 1 includes an indoor fan 11 and an indoor heat exchanger 12, the outdoor unit 2 includes an outdoor fan 21, an outdoor heat exchanger 22 and a compressor 23, and the air temperature in the vehicle interior environment is adjusted by cooling or heating of the indoor unit 1 and the outdoor unit 2.
The indoor unit 1 and the outdoor unit 2 are connected to a drive controller 7, specifically, the indoor fan 11, the indoor heat exchanger 12, the outdoor fan 21, the outdoor heat exchanger 22 and the compressor 23 are connected to the drive controller 7, the drive controller 7 is further connected to an in-vehicle environment temperature sensor 4, an indoor heat exchanger temperature sensor 5 and an out-vehicle environment temperature sensor 6, the in-vehicle environment temperature sensor 4 is used for detecting an in-vehicle environment temperature value, the indoor heat exchanger temperature sensor 5 is used for detecting an indoor heat exchanger temperature value, the out-vehicle environment temperature sensor 6 is used for detecting an out-vehicle environment temperature value, the drive controller 7 is used for respectively obtaining an in-vehicle environment temperature value, an indoor heat exchanger temperature value and an out-vehicle environment temperature value, and the drive controller 7 controls the working states of the compressor 23, the outdoor fan 21 and the outdoor fan 22. Display module 8 is used for showing the lack fluorine information of parking air conditioner, and its accessible wifi communication module, bluetooth module or CAN bus etc. are connected with drive controller 7, and display module 8 CAN be a display screen, and it CAN be installed in a certain position of driver's cabin in the car according to actual need, and the driver looks over in the driver's cabin of being convenient for, and display module 8's mounted position this embodiment does not do specific restriction. The warning module 9 is used for warning when the parking air conditioner is in a fluorine-lacking state, the warning module 9 can be a buzzer or an indicator lamp, and can be selected according to actual needs, and the warning module 9 can be installed at a certain position of a cab in the automobile according to actual needs, so that a driver in the cab can conveniently hear or check the warning.
In this embodiment, the driving controller 7 is disposed in the outdoor unit 2, the in-vehicle ambient temperature sensor 4 is disposed at an indoor air inlet of the indoor unit 1, the indoor heat exchanger temperature sensor 5 is disposed on a coil of the indoor heat exchanger 12, and the out-vehicle ambient temperature sensor 6 is disposed at an outdoor air inlet of the outdoor unit 2.
In this embodiment, the driving controller 7 receives the corresponding temperature values sent by the in-vehicle ambient temperature sensor 4 and the indoor heat exchanger temperature sensor 5 to perform fluorine deficiency judgment, so as to realize the fluorine deficiency protection of the parking air conditioner, specifically, the driving controller 7 is used for:
when the parking air conditioner is started in a refrigeration mode, firstly, the outdoor fan 21 is controlled to be started, and after the outdoor fan 21 runs for a first preset time, the compressor 23 is controlled to be started;
after the compressor 23 operates for a second preset time, judging that the parking air conditioner is lack of fluorine based on the currently obtained in-vehicle environment temperature value and the indoor heat exchanger temperature value;
and controlling the outdoor fan 21 and the compressor 23 to stop working based on the fluorine shortage judgment result so as to realize the fluorine shortage protection of the parking air conditioner.
It should be noted that, when the drive controller 7 determines that the fluorine deficiency occurs, the adopted in-vehicle ambient temperature value and the adopted indoor heat exchanger temperature value are corresponding temperature values detected by the in-vehicle ambient temperature sensor 4 and the indoor heat exchanger temperature sensor 5 after the compressor 23 operates for the second preset time. When the control outdoor fan 21 and the compressor 23 stop operating, the control indoor fan 11 operates normally.
Specifically, the first preset time and the second preset time may be set according to actual needs, and in this embodiment, to improve the accuracy of fluorine deficiency judgment and improve the fluorine deficiency protection control effect, the first preset time is 15s to 30s, and the second preset time is 5 min.
When the parking air conditioner is started in a refrigeration mode, the outdoor fan 21 is controlled to be superior to the compressor 23 to be started, so that the heat inside the parking air conditioner can be taken away quickly, the temperature inside the parking air conditioner is reduced, the pressure and the temperature of the whole parking air conditioner can be stabilized and balanced more quickly, the accuracy of fluorine deficiency judgment is improved, the starting load and the starting current of the compressor 23 can be reduced, and the current impact on components is reduced; after the compressor 23 is started and operated for a preset time, the drive controller 7 judges that the fluorine is lacking based on the currently obtained in-vehicle environment temperature value and the indoor heat exchanger temperature value, and controls the outdoor fan 21 and the compressor 23 to stop working based on the judgment result of the fluorine deficiency, so that the fluorine deficiency protection of the parking air conditioner is realized, the control of the fluorine deficiency protection when the actual refrigerant quantity of the parking air conditioner is about 0-70% of the nominal filling quantity is realized, the control effect of the fluorine deficiency protection is improved, and the control cost of the fluorine deficiency protection is reduced.
In this embodiment, the drive controller 7 is further configured to: after the compressor 23 operates for a second preset time, if the currently acquired temperature value of the environment in the vehicle and the temperature value of the indoor heat exchanger meet the first protection condition, controlling the outdoor fan 21 and the compressor 23 to stop working;
the first protection condition is as follows: and in the first preset judgment time, the difference value between the temperature value of the environment in the vehicle and the temperature value of the indoor heat exchanger is less than or equal to a preset temperature threshold value.
Specifically, the preset temperature threshold and the first preset determination time may be set according to actual needs, in this embodiment, in order to improve the effect of fluorine deficiency protection, the preset temperature threshold is set to 8 ℃, and the first preset determination time is set to 5 s.
To further enhance the fluorine deficiency protection control effect, the drive controller 7 in this embodiment is further configured to:
after the currently obtained in-vehicle environment temperature value and the indoor heat exchanger temperature value satisfy the first protection condition, if the current actual operating frequency of the compressor 23 satisfies the second protection condition, the outdoor fan 21 and the compressor 23 are controlled to stop working.
The second protection condition is as follows: within the second preset judgment time, the actual operating frequency of the compressor 23 is always greater than the preset frequency threshold.
When the drive controller 7 determines the second protection condition, the actual operating frequency of the compressor used is the actual operating frequency of the compressor that satisfies the first protection condition.
Specifically, the preset frequency threshold and the second preset determination time may be set according to actual needs, in this embodiment, in order to improve the effect of fluorine-deficient protection, the preset frequency threshold is set to 38Hz, and the second preset determination time is set to 60 s.
To ensure the accuracy of the fluorine deficiency determination and to ensure reliable operation of the outdoor unit 2, the drive controller 7 is also configured to: and after the outdoor fan 21 and the compressor 23 stop working for the third preset time, controlling the outdoor fan 21 and the compressor 23 to restart, judging that the parking air conditioner is lack of fluorine, and if the number of fluorine lack faults reaches a preset number threshold value within the fourth preset time, controlling the display module 8 to work, and controlling the outdoor fan 21 and the compressor 23 to stop working and perform maintenance.
The drive controller 7 is also used; after the outdoor fan 21 and the compressor 23 stop working for the third preset time, the outdoor fan 21 and the compressor 23 are controlled to restart, the parking air conditioner is judged to lack fluorine, if the parking air conditioner is judged to have a fluorine lack fault within the fourth preset time and the number of fluorine lack faults does not reach the preset number threshold, the alarm module 9 is controlled to work, and the fourth preset time is reset to judge the parking air conditioner to lack fluorine again.
Specifically, resetting the fourth preset time means resetting the fourth preset time to the original time value, for example, if the original time value is 0, timing is started from 0 and whether the parking air conditioner is lack of fluorine is determined within the fourth preset time, and if the timing reaches the fourth preset time, it is determined that the parking air conditioner has a fluorine lack fault and the number of fluorine lack faults does not reach the preset number threshold, the alarm module 9 is controlled to alarm, and the fourth preset time is reset to 0, so as to perform the fluorine lack determination repeatedly.
More specifically, the third preset time, the preset time threshold and the fourth preset time may be set according to actual needs, in this embodiment, in order to improve the accuracy of fluorine deficiency judgment and improve the fluorine deficiency protection control effect, in this embodiment, the third preset time is 3min, the preset time threshold is 3 times, and the fourth preset time is 30 min.
In this embodiment, in order to further improve the accuracy of the judgment of the lack of fluorine, reduce the starting load and starting current of the compressor 23, and reduce the current impact on the components, the driving controller 7 is further configured to:
and after the outdoor fan 21 and the compressor 23 stop running for a third preset time, controlling the outdoor fan 21 and the compressor 23 to restart based on the starting sequence of the outdoor fan 21 and the compressor 23 when the parking air conditioner is started in the cooling mode. That is, after the outdoor fan 21 and the compressor 23 stop operating for the third preset time, the outdoor fan 21 is controlled to start, and after the outdoor fan 21 operates for the first preset time, the compressor 23 is controlled to start; and after the compressor 23 operates for the second preset time, judging that the parking air conditioner is lack of fluorine.
Example two
The present embodiment is consistent with the structure of the first embodiment, and the difference lies in that the drive controller 7 judges that the parking air conditioner lacks fluorine, specifically, after judging that the currently obtained vehicle interior environment temperature value and the indoor heat exchanger temperature value satisfy the first protection condition, the drive controller 7 judges whether to satisfy the third protection condition based on the currently obtained vehicle exterior environment temperature value and the current phase current of the compressor 23, specifically as follows:
in the present embodiment, the drive controller 7 is used to:
when the parking air conditioner is started in a refrigeration mode, firstly, the outdoor fan 21 is controlled to be started, and after the outdoor fan 21 runs for a first preset time, the compressor 23 is controlled to be started;
after the compressor 23 operates for a second preset time, judging that the parking air conditioner is lack of fluorine based on the currently obtained in-vehicle environment temperature value and the indoor heat exchanger temperature value;
and controlling the outdoor fan 21 and the compressor 23 to stop working based on the fluorine shortage judgment result so as to realize the fluorine shortage protection of the parking air conditioner.
Specifically, the first preset time and the second preset time may be set according to actual needs, and in this embodiment, to improve the accuracy of fluorine deficiency judgment and improve the fluorine deficiency protection control effect, the first preset time is 15s to 30s, and the second preset time is 5 min.
In this embodiment, the drive controller 7 is further configured to: after the compressor 23 operates for a second preset time, if the currently acquired temperature value of the environment in the vehicle and the temperature value of the indoor heat exchanger meet the first protection condition, controlling the outdoor fan 21 and the compressor 23 to stop working;
the first protection condition is as follows: and in the first preset judgment time, the difference value between the temperature value of the environment in the vehicle and the temperature value of the indoor heat exchanger is less than or equal to a preset temperature threshold value.
Specifically, the preset temperature threshold and the first preset determination time may be set according to actual needs, in this embodiment, in order to improve the effect of fluorine deficiency protection, the preset temperature threshold is set to 8 ℃, and the first preset determination time is set to 5 s.
To further enhance the fluorine deficiency protection control effect, the drive controller 7 in this embodiment is further configured to:
after the currently acquired environment temperature value outside the vehicle and the currently acquired temperature value of the indoor heat exchanger satisfy the first protection condition, if the currently acquired environment temperature value outside the vehicle and the currently acquired current phase current of the compressor 23 satisfy the third protection condition, the outdoor fan 21 and the compressor 23 are controlled to stop working.
The third protection condition is as follows: the value of the external environment temperature is within a preset temperature range and the phase current of the compressor 23 is within a preset phase current range corresponding to the preset temperature range.
When the drive controller 7 determines the third protection condition, the external environment temperature value and the phase current of the compressor that are adopted are the phase current of the compressor that satisfies the first protection condition and the external environment temperature value detected by the external environment temperature sensor.
Specifically, the preset temperature range and the preset phase current range are multiple, wherein the preset temperature range corresponds to the preset current range one to one, that is, the preset current range is the maximum phase current of the compressor allowed in the preset temperature range. The controller 7 is further adapted to: when the external environment temperature value is within any preset temperature range and the phase current of the compressor 23 is within a corresponding preset phase current range within the preset temperature range, it is determined that the currently acquired external environment temperature value and the current phase current of the compressor 23 satisfy a third protection condition.
The third protection condition in this embodiment avoids a malfunction due to a detection error by the judgment of the phase current added to the compressor 23. In this embodiment, in order to improve the fluorine-deficient protection effect, the preset temperature range and the preset phase current range are three, one preset temperature range is less than 35 ℃, and the preset phase current range corresponding to the preset temperature range is less than 16A; a preset temperature range is more than or equal to 35 ℃ and less than or equal to 45 ℃, and a preset phase current range corresponding to the preset temperature range is less than 19A; a predetermined temperature range is greater than 45 deg.c and a predetermined phase current range corresponding to the predetermined temperature range is less than 21A. When the environment temperature value outside the vehicle meets less than 35 ℃ and the phase current of the compressor 23 meets less than 16A, determining that the environment temperature value outside the vehicle and the phase current of the compressor 23 meet a third protection condition; or when the external environment temperature value meets the temperature of more than or equal to 35 ℃ and less than or equal to 45 ℃ and the phase current of the compressor 23 meets the temperature of less than 19A, determining that the external environment temperature value and the phase current of the compressor 23 meet the third protection condition; or when the environment temperature value outside the vehicle meets more than 45 ℃ and the phase current of the compressor 23 meets less than 21A, determining that the environment temperature value outside the vehicle and the phase current of the compressor 23 meet the third protection condition.
It should be noted that, in order to ensure the accuracy of the fluorine deficiency judgment and ensure the reliable operation of the outdoor unit 2, when it has been judged by the driving controller 7 that the fluorine deficiency fault occurs in the parking air conditioner, based on the display module 8 and the alarm module 9, in a fourth preset time, the mode of performing alarm prompt or displaying the fluorine deficiency information by comparing the number of times of the fluorine deficiency fault with the preset number threshold by the driving controller 7 is the same as that in the first embodiment, and this embodiment is not described herein again.
When the parking air conditioner is started in a refrigeration mode, the outdoor fan 21 is controlled to be superior to the compressor 23 to be started, so that the heat inside the parking air conditioner can be taken away quickly, the temperature inside the parking air conditioner is reduced, the pressure and the temperature of the whole parking air conditioner can be stabilized and balanced more quickly, the accuracy of fluorine deficiency judgment is improved, the starting load and the starting current of the compressor 23 can be reduced, and the current impact on components is reduced; after the compressor 23 is started and operated for a preset time, the drive controller 7 judges that the fluorine is lacking based on the currently obtained in-vehicle environment temperature value and the indoor heat exchanger temperature value, and controls the outdoor fan 21 and the compressor 23 to stop working based on the judgment result of the fluorine deficiency, so that the fluorine deficiency protection of the parking air conditioner is realized, the control of the fluorine deficiency protection when the actual refrigerant quantity of the parking air conditioner is about 0-70% of the nominal filling quantity is realized, the control effect of the fluorine deficiency protection is improved, and the control cost of the fluorine deficiency protection is reduced.
EXAMPLE III
The present embodiment is identical to the first and second embodiments, except that the drive controller 7 determines the lack of fluorine in the parking air conditioner. Specifically, after judging that the currently obtained in-vehicle environment temperature value and the indoor heat exchanger temperature value satisfy the first protection condition, the drive controller 7 judges whether the second protection condition is satisfied based on the actual operating frequency of the compressor, and after the second protection condition is satisfied, judges whether the third protection condition is satisfied based on the currently obtained out-vehicle environment temperature value and the current phase current of the compressor, as follows:
in the present embodiment, the drive controller 7 is used to:
when the parking air conditioner is started in a refrigeration mode, firstly, the outdoor fan 21 is controlled to be started, and after the outdoor fan 21 runs for a first preset time, the compressor 23 is controlled to be started;
after the compressor 23 operates for a second preset time, judging that the parking air conditioner is lack of fluorine based on the currently obtained in-vehicle environment temperature value and the indoor heat exchanger temperature value;
and controlling the outdoor fan 21 and the compressor 23 to stop working based on the fluorine shortage judgment result so as to realize the fluorine shortage protection of the parking air conditioner.
Specifically, the first preset time and the second preset time may be set according to actual needs, and in this embodiment, to improve the accuracy of fluorine deficiency judgment and improve the fluorine deficiency protection control effect, the first preset time is 15s to 30s, and the second preset time is 5 min.
In this embodiment, the drive controller 7 is further configured to:
after the compressor 23 operates for a second preset time, if the currently acquired temperature value of the environment in the vehicle and the temperature value of the indoor heat exchanger meet the first protection condition, controlling the outdoor fan 21 and the compressor 23 to stop working;
the first protection condition is as follows: and in the first preset judgment time, the difference value between the temperature value of the environment in the vehicle and the temperature value of the indoor heat exchanger is less than or equal to a preset temperature threshold value.
Specifically, the preset temperature threshold and the first preset determination time may be set according to actual needs, in this embodiment, in order to improve the effect of fluorine deficiency protection, the preset temperature threshold is set to 8 ℃, and the first preset determination time is set to 5 s.
To further improve the fluorine deficiency protection control effect, in the present embodiment, the driving controller 7 is further configured to:
after the currently obtained in-vehicle environment temperature value and the indoor heat exchanger temperature value satisfy the first protection condition, if the current actual operating frequency of the compressor 23 satisfies the second protection condition, the outdoor fan 21 and the compressor 23 are controlled to stop working.
The second protection condition is as follows: within the second preset judgment time, the actual operating frequency of the compressor 23 is always greater than the preset frequency threshold.
When the drive controller 7 determines the second protection condition, the actual operating frequency of the compressor used is the actual operating frequency of the compressor that satisfies the first protection condition.
Specifically, the preset frequency threshold and the second preset judgment time may be set according to actual needs, in order to improve the effect of fluorine-deficient protection, the preset frequency threshold is set to 38Hz, and the second preset judgment time is set to 60 s.
To further improve the fluorine deficiency protection control effect, in the present embodiment, the driving controller 7 is further configured to:
and after the current actual operating frequency of the compressor 23 meets the second protection condition, if the currently acquired external environment temperature value and the current phase current of the compressor 23 meet the third protection condition, controlling the outdoor fan 21 and the compressor 23 to stop working.
When the drive controller 7 determines the third protection condition, the external environment temperature value and the phase current of the compressor that are adopted are the phase current of the compressor that satisfies the second protection condition and the external environment temperature value detected by the external environment temperature sensor. The third protection condition in this embodiment is the same as the third protection condition in the second embodiment, and this embodiment is not described herein again.
It should be further noted that, in order to ensure the accuracy of the fluorine deficiency judgment and ensure the reliable operation of the outdoor unit 2, when it has been judged that the parking air conditioner has the fluorine deficiency fault through the driving controller 7, based on the display module 8 and the alarm module 9, in the fourth preset time, the manner of comparing the number of times of the fluorine deficiency fault with the preset number threshold by the driving controller 7 to perform the alarm prompt or display the fluorine deficiency information is the same as that in the first embodiment and the second embodiment, and the description of this embodiment is omitted here.
When the parking air conditioner is started in a refrigeration mode, the outdoor fan 21 is controlled to be superior to the compressor 23 to be started, so that the heat inside the parking air conditioner can be taken away quickly, the temperature inside the parking air conditioner is reduced, the pressure and the temperature of the whole parking air conditioner can be stabilized and balanced more quickly, the accuracy of fluorine deficiency judgment is improved, the starting load and the starting current of the compressor 23 can be reduced, and the current impact on components is reduced; after the compressor 23 is started and operated for a preset time, the drive controller 7 judges that the fluorine is lacking based on the currently obtained in-vehicle environment temperature value and the indoor heat exchanger temperature value, and controls the outdoor fan 21 and the compressor 23 to stop working based on the judgment result of the fluorine deficiency, so that the fluorine deficiency protection of the parking air conditioner is realized, the control of the fluorine deficiency protection when the actual refrigerant quantity of the parking air conditioner is about 0-70% of the nominal filling quantity is realized, the control effect of the fluorine deficiency protection is improved, and the control cost of the fluorine deficiency protection is reduced.
Example four
The present embodiment also provides a control method of a parking air conditioner, applied to the parking air conditioner as described above, with reference to fig. 2, the control method including:
s1: detecting an in-vehicle environment temperature value through an in-vehicle environment temperature sensor, and detecting an indoor heat exchanger temperature value through an indoor heat exchanger temperature sensor;
s2: when the parking air conditioner needs to be started in a refrigeration mode, the driving controller 7 firstly controls the outdoor fan 21 to be started, and then controls the compressor 23 to be started after the outdoor fan 21 runs for a first preset time, and the compressor 23 runs for a second preset time;
s3: after the compressor 23 runs for the second preset time, the parking air conditioner is judged to be lack of fluorine based on the currently obtained in-vehicle environment temperature value detected by the in-vehicle environment temperature sensor and the indoor heat exchanger temperature value detected by the indoor heat exchanger temperature sensor, and the outdoor fan 21 and the compressor 23 are controlled to stop working based on the judgment result of the lack of fluorine, so that the protection of the parking air conditioner to be lack of fluorine is realized.
It should be noted that, the step S1 may be performed before the step S2, in the step S2, before the step S3, or after the compressor 23 operates for the second preset time in the step S3, which is not limited in this embodiment. It should be noted that, when the step S1 is performed before the step S2, before the step S2 or before the step S3, the data used in the step S3 is the corresponding temperature values detected by the vehicle interior environment temperature sensor and the indoor heat exchanger temperature sensor after the compressor 23 is operated for the second preset time.
Referring to fig. 3, the step S3 in this embodiment further includes:
s301: and after the compressor 23 operates for the second preset time, if the currently acquired temperature value of the environment in the vehicle and the temperature value of the indoor heat exchanger meet the first protection condition, controlling the outdoor fan 21 and the compressor 23 to stop working.
It should be noted that the first preset time, the second preset time, and the first protection condition in this embodiment are all the same as those in the first embodiment, the second embodiment, and the third embodiment, and are not described herein again. When the outdoor fan 21 and the compressor 23 are controlled to stop operating, the indoor fan 11 is controlled to operate normally.
With continuing reference to fig. 3, in order to further improve the fluorine deficiency protection control effect, in this embodiment, in step S301, step S3 further includes:
s302 a: after the currently obtained in-vehicle environment temperature value and the indoor heat exchanger temperature value satisfy the first protection condition, if the current actual operating frequency of the compressor satisfies the second protection condition, the outdoor fan 21 and the compressor 23 are controlled to stop working.
When the second protection condition is determined, the actual operating frequency of the compressor used is the actual operating frequency of the compressor that satisfies the first protection condition. In this embodiment, the second protection condition is the same as that in the first and third embodiments, and is not described herein.
Of course, in order to further improve the fluorine deficiency protection control effect, referring to fig. 4, in the present embodiment, in step S301, step S3 further includes:
s302 b: after the currently acquired environment temperature value outside the vehicle and the currently acquired temperature value of the indoor heat exchanger meet the first protection condition, if the currently acquired environment temperature value outside the vehicle and the currently acquired current phase current of the compressor meet the third protection condition, the outdoor fan 21 and the compressor 23 are controlled to stop working.
When the drive controller 7 determines the third protection condition, the external environment temperature value and the phase current of the compressor that are adopted are the phase current of the compressor that satisfies the first protection condition and the external environment temperature value detected by the external environment temperature sensor. The third protection condition in this embodiment is the same as that in the second and third embodiments, and is not described herein.
In this embodiment, the phase current added to the compressor 23 is determined under the third protection condition, so that the malfunction caused by the detection error is avoided.
Of course, in order to further improve the fluorine deficiency protection control effect, referring to fig. 5, in this embodiment, the step S302a is performed, wherein the step S3 further includes:
s302 c: and after the current actual operating frequency of the compressor meets the second protection condition, if the currently acquired external environment temperature value and the current phase current of the compressor meet the third protection condition, controlling the outdoor fan 21 and the compressor 23 to stop working.
When the third protection condition is determined, the external environment temperature value and the phase current of the compressor are the phase current of the compressor and the external environment temperature value detected by the external environment temperature sensor after the second protection condition is satisfied.
In order to ensure the accuracy of the judgment of the lack of fluorine and ensure the reliable operation of the outdoor unit 2, referring to fig. 2 to 5, the present embodiment further includes:
s4: after the outdoor fan 21 and the compressor 23 stop working for the third preset time, controlling the outdoor fan 21 and the compressor 23 to restart, judging that the parking air conditioner is lack of fluorine, and if the number of fluorine-lack faults in the fourth preset time reaches a preset number threshold, controlling the display module 8 to work, and controlling the outdoor fan 21 and the compressor 23 to stop working and perform maintenance; if the parking air conditioner is judged to have the fluorine-lacking fault within the fourth preset time and the number of times of the fluorine-lacking fault does not reach the preset number threshold, the alarm module 9 is controlled to work, and the fourth preset time is reset to judge the fluorine-lacking of the parking air conditioner again.
In this embodiment, in order to further improve the accuracy of the fluorine deficiency determination, reduce the starting load and the starting current of the compressor 23, and reduce the current impact on the components, the step S4 of controlling the outdoor fan 21 and the compressor 23 to restart specifically includes:
and after the outdoor fan 21 and the compressor 23 stop running for a third preset time, controlling the outdoor fan 21 and the compressor 23 to restart based on the starting sequence of the outdoor fan 21 and the compressor 23 when the parking air conditioner is started in the cooling mode. That is, after the outdoor fan 21 and the compressor 23 stop operating for the third preset time, the outdoor fan 21 is controlled to start, and after the outdoor fan 21 operates for the first preset time, the compressor 23 is controlled to start; and after the compressor 23 operates for the second preset time, judging that the parking air conditioner is lack of fluorine.
It should be noted that the third preset time, the preset time threshold, and the fourth preset time are the same as those in the first embodiment, the second embodiment, and the third embodiment, and are not described herein again.
In the embodiment, the outdoor fan 21 is controlled to be superior to the compressor 23 for starting, so that the heat inside the parking air conditioner can be taken away quickly, the temperature inside the parking air conditioner is reduced, the pressure and the temperature of the whole parking air conditioner can be stabilized and balanced more quickly, the accuracy of fluorine deficiency judgment is improved, the starting load and the starting current of the compressor 23 can be reduced, and the current impact on components is reduced; after the compressor 23 is started and operated for a preset time, the drive controller 7 judges that the fluorine is lacking based on the currently obtained in-vehicle environment temperature value and the indoor heat exchanger temperature value, and controls the outdoor fan 21 and the compressor 23 to stop working based on the judgment result of the fluorine deficiency, so that the fluorine deficiency protection of the parking air conditioner is realized, the control of the fluorine deficiency protection when the actual refrigerant quantity of the parking air conditioner is about 0-70% of the nominal filling quantity is realized, the control effect of the fluorine deficiency protection is improved, and the control cost of the fluorine deficiency protection is reduced.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.
Claims (10)
1. A parking air conditioner, comprising:
a compressor;
an outdoor fan;
the vehicle internal environment temperature sensor is used for detecting a vehicle internal environment temperature value;
the indoor heat exchanger temperature sensor is used for detecting the temperature value of the indoor heat exchanger;
the driving controller is connected with the in-vehicle environment temperature sensor and the indoor heat exchanger temperature sensor and is used for respectively acquiring an in-vehicle environment temperature value and an indoor heat exchanger temperature value;
the driving controller is also respectively connected with the compressor and the outdoor fan, and the working states of the compressor and the outdoor fan are controlled by the driving controller;
the drive controller is configured to:
when the parking air conditioner is started in a refrigeration mode, firstly controlling the outdoor fan to start, and then controlling the compressor to start after the outdoor fan runs for a first preset time;
after the compressor operates for a second preset time, judging that the parking air conditioner is lack of fluorine based on the currently obtained ambient temperature value in the vehicle and the temperature value of the indoor heat exchanger;
and controlling the outdoor fan and the compressor to stop working based on the fluorine shortage judgment result so as to realize the fluorine shortage protection of the parking air conditioner.
2. The parking air conditioner of claim 1, wherein the drive controller is further configured to:
after the compressor operates for the second preset time, if the currently acquired environment temperature value in the vehicle and the temperature value of the indoor heat exchanger meet a first protection condition, controlling the outdoor fan and the compressor to stop working;
the first protection condition is as follows: and within a first preset judgment time, the difference value between the temperature value of the environment in the vehicle and the temperature value of the indoor heat exchanger is less than or equal to a preset temperature threshold value.
3. The parking air conditioner according to claim 2, characterized by further comprising: the vehicle external environment temperature sensor is connected with the drive controller and used for detecting a vehicle external environment temperature value;
the drive controller is further configured to:
after the currently acquired environment temperature value inside the vehicle and the temperature value of the indoor heat exchanger meet the first protection condition, if the current actual running frequency of the compressor meets a second protection condition or if the currently acquired environment temperature value outside the vehicle and the current phase current of the compressor meet a third protection condition, controlling the outdoor fan and the compressor to stop working;
the second protection condition is as follows: within a second preset judgment time, the actual operating frequency of the compressor is always greater than a preset frequency threshold value;
the third protection condition is as follows: the temperature value of the environment outside the vehicle is within a preset temperature range, and the phase current of the compressor is within a preset phase current range corresponding to the preset temperature range.
4. The parking air conditioner of claim 3, wherein the drive controller is further configured to:
and after the current actual operating frequency of the compressor meets the second protection condition, if the currently acquired environment temperature value outside the vehicle and the current phase current of the compressor meet the third protection condition, controlling the outdoor fan and the compressor to stop working.
5. The parking air conditioner according to claim 1, characterized by further comprising: and the display module is connected with the driving controller and used for receiving the fluorine-lacking information sent by the driving controller and displaying the fluorine-lacking information.
6. The parking air conditioner of claim 5, wherein the drive controller is further configured to:
and after the outdoor fan and the compressor stop working for a third preset time, the outdoor fan and the compressor are controlled to restart, the parking air conditioner is judged to lack fluorine, if the number of fluorine-lacking faults reaches a preset number threshold value within a fourth preset time, the display module is controlled to work, and the outdoor fan and the compressor are controlled to stop working and overhaul.
7. The parking air conditioner according to claim 6, characterized by further comprising: and the warning module is connected with the driving controller and used for receiving warning information sent by the driving controller and giving a warning prompt when the parking air conditioner has a fluorine-lacking fault.
8. The parking air conditioner of claim 7, wherein the drive controller is further configured to:
outdoor fan with the compressor stop work after the third preset time, control outdoor fan with the compressor restart, and right the parking air conditioner lacks fluorine and judges, if judge in the fourth preset time the parking air conditioner has appeared lacking fluorine trouble just lack fluorine trouble number of times and has not reached predetermine the number of times threshold value, then control warning module work, and reset the fourth preset time is right the parking air conditioner lacks fluorine and judges again.
9. Parking air conditioner according to claim 6 or 8, characterized in that the drive controller is further configured to:
and after the outdoor fan and the compressor stop running for the third preset time, controlling the outdoor fan and the compressor to restart based on the starting sequence of the outdoor fan and the compressor when the parking air conditioner is started in a refrigeration mode.
10. A control method of a parking air conditioner, applied to the parking air conditioner of any one of claims 1 to 9, comprising:
detecting an in-vehicle environment temperature value through an in-vehicle environment temperature sensor;
detecting the temperature value of the indoor heat exchanger through an indoor heat exchanger temperature sensor;
when the parking air conditioner needs to be started in a refrigeration mode, firstly controlling an outdoor fan to start through a driving controller, and then controlling a compressor to start after the outdoor fan operates for a first preset time;
after the compressor operates for a second preset time, judging that the parking air conditioner is lack of fluorine based on the currently obtained ambient temperature value in the vehicle and the temperature value of the indoor heat exchanger;
and controlling the outdoor fan and the compressor to stop working based on the fluorine shortage judgment result so as to realize the fluorine shortage protection of the parking air conditioner.
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| CN202110789352.XA CN113352844A (en) | 2021-07-13 | 2021-07-13 | Parking air conditioner and control method thereof |
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| CN202110789352.XA CN113352844A (en) | 2021-07-13 | 2021-07-13 | Parking air conditioner and control method thereof |
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Cited By (1)
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| CN114056043A (en) * | 2021-11-15 | 2022-02-18 | 广东美的制冷设备有限公司 | Control method and device for parking air conditioner and storage medium |
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Application publication date: 20210907 |