CN110733314A - Automobile air conditioner compressor control method and device - Google Patents
Automobile air conditioner compressor control method and device Download PDFInfo
- Publication number
- CN110733314A CN110733314A CN201810792964.2A CN201810792964A CN110733314A CN 110733314 A CN110733314 A CN 110733314A CN 201810792964 A CN201810792964 A CN 201810792964A CN 110733314 A CN110733314 A CN 110733314A
- Authority
- CN
- China
- Prior art keywords
- pressure
- frequency
- air conditioner
- compressor
- operating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The embodiment of the invention provides automobile air conditioner compressor control methods and devices, and belongs to the technical field of automobile air conditioners.
Description
Technical Field
The invention relates to the technical field of automobile air conditioners, in particular to a control method and device for automobile air conditioner compressors.
Background
With the improvement of the requirement of people on the driving comfort of the automobile, the automobile air conditioner becomes which is an important part of the current automobile, however, the starting or stopping signal of the conventional automobile air conditioner compressor is often given by an upper computer of the air conditioner, and the automobile air conditioner compressor is only passive execution parts.
The inventor of the present application finds that the above solution of the prior art has at least the following disadvantages in the process of implementing the present invention: if the upper computer system of the air conditioner is in failure or the user is in improper operation, the pressure of compressed air or compressed refrigerant is possibly too high, so that a pipeline is cracked and even exploded, and the safety of personnel in the vehicle can be endangered in serious cases.
Therefore, it is an urgent problem in the industry to prevent the burst of the compressor pipe caused by improper operation or system failure.
Disclosure of Invention
An embodiment of the present invention provides a method and an apparatus for controlling vehicle air conditioner compressors, which are used to solve at least the problem that the compressor in the prior art cannot prevent the bursting of the compressor pipeline caused by improper operation or system failure.
In order to achieve the above object, an embodiment of the present invention provides methods for controlling an automotive air conditioning compressor, including acquiring an operating pressure of the air conditioning compressor, acquiring a target pressure operating range of the air conditioning compressor suitable for normal operation in a current state, determining whether the air conditioning compressor has a pressure abnormality according to the acquired operating pressure and the target pressure operating range, and if the air conditioning compressor has the pressure abnormality, controlling the air conditioning compressor to perform a frequency-reducing or frequency-limiting operation.
Optionally, the obtaining of the pressure operation range of the air conditioner compressor suitable for normal operation in the current state includes: acquiring a rotating speed parameter of the air conditioner compressor in the current state; and inquiring a standard pressure gauge according to the acquired rotating speed parameter to determine a corresponding target pressure operating range, wherein the standard pressure gauge stores a plurality of relations between the rotating speed parameter and the pressure operating range.
Optionally, the collecting the operating pressure of the air conditioner compressor includes: the operating pressure of the air conditioner compressor is acquired through a pressure sensor, or the operating pressure of the air conditioner compressor is acquired through communication interaction with an upper computer system of an air conditioner.
Optionally, the determining whether the air conditioner compressor has pressure abnormality according to the collected operating pressure and the target pressure operating range includes: determining an overpressure threshold and an underpressure threshold that are not within the target pressure operating range, wherein the overpressure threshold exceeds the target pressure operating range and the underpressure threshold is below the target pressure operating range; and judging whether the air conditioner compressor has pressure abnormity or not according to the collected operating pressure and the determined overpressure threshold value and undervoltage threshold value.
Optionally, the determining whether the pressure of the air-conditioning compressor is abnormal according to the determined overpressure threshold and underpressure threshold includes determining that the pressure of the air-conditioning compressor is abnormal when the collected operating pressure is greater than the overpressure threshold or less than the underpressure threshold, or determining that the pressure of the air-conditioning compressor is abnormal when the collected operating pressure exceeds the target pressure operating range and is less than the overpressure threshold for a th predetermined time period, or when the collected operating pressure is less than the target pressure operating range and is greater than the underpressure threshold for a second predetermined time period.
Optionally, the operating pressure comprises a suction pressure and/or a discharge pressure, and accordingly the pressure anomaly comprises any of a discharge over-pressure anomaly, a discharge under-pressure anomaly, a suction over-pressure anomaly, and a suction under-pressure anomaly.
Optionally, the determining whether the pressure of the air conditioner compressor is abnormal includes: determining that a pressure abnormality exists in the air conditioning compressor when the collected suction pressure exceeds the collected discharge pressure.
Optionally, the controlling the air conditioner compressor to perform the frequency reducing or limiting operation includes controlling the air conditioner compressor to perform the frequency reducing or limiting operation for times, wherein the frequency reducing or limiting operation for times includes that the air conditioner compressor continuously operates at a frequency limiting frequency or a frequency reducing frequency for a third predetermined time period, wherein the frequency limiting frequency or the frequency reducing frequency does not exceed a frequency corresponding to the current state.
Optionally, the controlling the air-conditioning compressor to perform the frequency-reducing or frequency-limiting operation includes determining a pressure change rate of the collected operating pressure within time periods, determining a frequency change rate of the operating frequency of the compressor according to the pressure change rate, and driving the air-conditioning compressor to work according to the frequency change rate, wherein the frequency change rate is smaller than the pressure change rate.
The embodiment of the invention also provides control devices for automobile air-conditioning compressors, which comprise a pressure acquisition unit, a target pressure operation range acquisition unit, a pressure abnormity judgment unit and a frequency limiting and frequency reducing unit, wherein the pressure acquisition unit is used for acquiring the operation pressure of the air-conditioning compressor, the target pressure operation range acquisition unit is used for acquiring a target pressure operation range of the air-conditioning compressor, which is suitable for normal operation in the current state, the pressure abnormity judgment unit is used for judging whether the air-conditioning compressor has pressure abnormity according to the acquired operation pressure and the target pressure operation range, and the frequency limiting and frequency reducing unit is used for controlling the air-conditioning compressor to implement frequency reduction or frequency limiting operation if the air-conditioning compressor has pressure abnormity.
Optionally, the target pressure operating range obtaining unit includes: the rotating speed parameter acquisition module is used for acquiring the rotating speed parameter of the air conditioner compressor in the current state; and the target pressure operating range determining module is used for inquiring a standard pressure gauge according to the acquired rotating speed parameter so as to determine a corresponding target pressure operating range, wherein the standard pressure gauge stores a plurality of relations between the rotating speed parameter and the pressure operating range.
Optionally, the pressure collecting unit includes: the pressure sensor is used for acquiring the operating pressure of the air-conditioning compressor; or the upper computer system interaction module is used for carrying out communication interaction with an upper computer system of the air conditioner so as to obtain the operating pressure of the air conditioner compressor.
Optionally, the pressure abnormality determination unit includes: a threshold determination module to determine an overpressure threshold and an underpressure threshold that are not within the target pressure operating range, wherein the overpressure threshold exceeds the target pressure operating range and the underpressure threshold is below the target pressure operating range; and the pressure abnormity judgment module is used for judging whether the air conditioner compressor has pressure abnormity according to the collected operating pressure in combination with the determined overpressure threshold value and the determined underpressure threshold value.
Optionally, the operating pressure comprises a suction pressure and/or a discharge pressure, and accordingly the pressure anomaly comprises any of a discharge over-pressure anomaly, a discharge under-pressure anomaly, a suction over-pressure anomaly, and a suction under-pressure anomaly.
Optionally, the frequency limiting and reducing unit is configured to control the air conditioner compressor to perform the frequency reducing or limiting operation for multiple times, where the times of frequency reducing or limiting operation includes that the air conditioner compressor continuously runs at a frequency limiting frequency or a frequency reducing frequency for a third predetermined time period, where the frequency limiting frequency or the frequency reducing frequency does not exceed a frequency corresponding to the current state.
Optionally, the frequency-limiting frequency-reducing unit is configured to determine a pressure change rate of the collected operating pressure in time periods, determine a frequency change rate of an operating frequency of the compressor according to the pressure change rate, and drive the air-conditioning compressor to operate according to the frequency change rate, where the frequency change rate is smaller than the pressure change rate.
By the technical scheme, the collected operating pressure of the air conditioner compressor is compared with the target pressure operating range of the air conditioner compressor suitable for normal operation to judge whether the air conditioner compressor has abnormal pressure, and the frequency reduction or frequency limitation operation is controlled to be implemented when the abnormal pressure is determined, so that the continuous rise of the pressure in the air conditioner compressor is relieved, and the safety problem possibly caused by improper operation or system failure is eliminated.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification , which together with the following detailed description serve to explain, but are not to limit, embodiments of the invention.
FIG. 1 is a flow chart of a method for controlling a compressor of a vehicle according to an embodiment of the present invention;
FIG. 2 is a standard pressure gauge for the pressure range of the carbon dioxide refrigerant compressor;
FIG. 3A is a line graph showing the relationship between the air conditioning frequency and the exhaust pressure of a conventional automobile;
FIG. 3B is a line graph showing the relationship between the air conditioning frequency and the exhaust pressure of the vehicle to which the method of the embodiment of the present invention is applied;
fig. 4 is a block diagram of a control device for a compressor of an air conditioner of a vehicle according to an embodiment of the present invention.
Description of the reference numerals
401 pressure acquisition unit 402 target pressure operation range acquisition unit
403 frequency-limiting frequency-reducing unit of pressure abnormity judging unit 404
40 automobile air conditioner compressor control device
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1, a method for controlling a compressor of an automobile according to an embodiment of the present invention may be implemented by an air conditioner compressor controller, the method including:
and S11, collecting the operating pressure of the air conditioner compressor.
Regarding the pressure obtaining method, CAN be obtained through a pressure sensor signal, for example, the air conditioner compressor controller is directly connected to the pressure sensor and obtains a corresponding pressure signal from the pressure sensor, CAN also be preferably obtained by connecting the air conditioner compressor controller to an air conditioner upper computer system, the upper computer obtains the pressure sensor signal in a communication mode, the communication mode CAN be a communication mode commonly used in the automobile compressor controller, for example, CAN, LIN, PWM, or the like, and the communication information contained in the communication mode at least contains the pressure information of the compressor.
And S12, acquiring a target pressure operation range of the air conditioner compressor suitable for normal operation in the current state.
It should be noted that the target pressure operating range may be fixed and pre-stored, or it may be determined in real time and correlated to the current operating state. For example, as shown in fig. 2, a standard pressure gauge for pressure range used in a carbon dioxide refrigerant compressor is shown, and it can be seen from the standard pressure gauge that the pressure condition ranges corresponding to different rotation speeds are different, for example, the suction pressure operation range corresponding to the rotation speed of 900-.
And S13, judging whether the air conditioner compressor has pressure abnormity according to the collected operation pressure and the target pressure operation range.
In embodiments, the collected operating pressure may be compared directly to a target pressure operating range, and an anomaly may be determined when the collected operating pressure is not within the target pressure operating range.
In view of this, in an alternative embodiment, an overpressure threshold and an underpressure threshold that are not within a target pressure operating range may be determined, wherein the overpressure threshold exceeds the target pressure operating range and the underpressure threshold is below the target pressure operating range, and a determination may be made as to whether a pressure anomaly exists in the air conditioning compressor based on a combination of the determined overpressure threshold and underpressure threshold as a function of the collected operating pressure.concretely, when the obtained target pressure operating range is 1-5MPa, a tolerance of 0.5MPa may be set, i.e., an overpressure threshold of 5.5MPa and an underpressure threshold of 0.5MPa is determined, and when the collected pressure value exceeds the overpressure threshold of 5.5MPa or is less than the underpressure threshold of 0.5MPa, a pressure anomaly in the air conditioning compressor may be determined, whereby the problem of sensitive modulation can be effectively avoided.preferably, it may also be determined whether the collected operating pressure is not within the target pressure operating range but does not exceed the threshold for a predetermined period of time, and thereby determining whether a pressure anomaly exists in the air conditioning compressor, specifically, when the collected operating pressure exceeds the target pressure operating range (e.5 MPa) and continues for example, and the collected pressure anomaly continues for a time period of 355.5 minutes is less than the collected pressure within the target pressure operating range of the target pressure is determined to be less than the collected pressure anomaly, and the collected pressure anomaly is determined that the air conditioning compressor continues for a time is less than the target pressure within the target pressure operating range of the second collected operating range, and the time, and the collected pressure is less than the time, and the time is less than the time, and.
The method comprises the steps of judging whether the collected suction pressure exceeds the collected discharge pressure or not in alternative implementation mode, determining that the air-conditioning compressor has pressure abnormality when the suction pressure exceeds the discharge pressure, and outputting a fault code.
And S14, if the pressure of the air conditioner compressor is abnormal, controlling the air conditioner compressor to implement frequency reduction or frequency limitation operation.
For example, the pressure change rate of the collected operation pressure in time can be determined, the frequency change rate of the operation frequency of the compressor can be determined according to the pressure change rate, and the air-conditioning compressor can be driven to work according to the frequency change rate, wherein the frequency change rate is smaller than the pressure change rate.
In addition, the down-conversion or frequency-limiting should be performed while providing an effective pressure to ensure stable operation of the cooling or heating operation, and at this time, the frequency overshoot should be prevented.
In view of the above, in embodiments , the compressor controller may control the air conditioner compressor to perform a down-conversion or frequency-limiting operation in times, wherein the down-conversion or frequency-limiting operation includes that the air conditioner compressor continuously operates at a frequency-limiting frequency or a down-conversion frequency for a third predetermined time period, wherein the frequency-limiting frequency or the down-conversion frequency does not exceed a frequency corresponding to the current state, and thus, the pressure in the air conditioner compressor is reduced by times, and the problem of pressure over-regulation caused by long-time continuous modulation can be effectively avoided while the pressure in the compressor is reduced.
As shown in fig. 3A and 3B, which respectively show the relationship between the air conditioning frequency and the discharge pressure of the conventional automobile and the automobile to which the method of the embodiment of the present invention is applied, the frequency and the pressure in the compressor are steadily increased as the air conditioning compressor is operated in fig. 3A, and when the frequency reaches a peak value, a peak correspondingly appears at the discharge pressure; in fig. 3B, as the air conditioner compressor operates, the frequency gradually increases along with the operation of the air conditioner, and the corresponding frequency limiting strategy is triggered to be executed (i.e., the predetermined time period is executed according to the limiting frequency), so that the exhaust pressure is also obviously reduced, and the peak value as in fig. 3A does not appear, thereby ensuring that the air conditioner compressor can be ensured to operate in the safe pressure range even when the user operates improperly.
As shown in fig. 4, the control device 40 for the compressor of the air conditioner of the vehicle according to the embodiment of the present invention includes:
the pressure acquisition unit 401 is used for acquiring the operating pressure of the air conditioner compressor;
a target pressure operating range obtaining unit 402, configured to obtain a target pressure operating range in which the air conditioner compressor is suitable for normal operation in a current state;
a pressure anomaly determination unit 403, configured to determine whether a pressure anomaly exists in the air-conditioning compressor according to the collected operating pressure and the target pressure operating range; and
and the frequency limiting and reducing unit 404 is configured to control the air conditioner compressor to perform frequency reduction or frequency limiting operation if the pressure of the air conditioner compressor is abnormal.
In , the target pressure operating range obtaining unit includes a rotation speed parameter obtaining module configured to obtain a rotation speed parameter of the air conditioner compressor in the current state, and a target pressure operating range determining module configured to query a standard pressure gauge according to the obtained rotation speed parameter to determine a corresponding target pressure operating range, where the standard pressure gauge stores a plurality of relationships between the rotation speed parameter and the pressure operating range.
In , the pressure acquisition unit includes a pressure sensor for acquiring the operating pressure of the air conditioner compressor, or an upper computer system interaction module for performing communication interaction with an upper computer system of an air conditioner to acquire the operating pressure of the air conditioner compressor.
In , the pressure anomaly determination unit includes a threshold determination module configured to determine an overpressure threshold and an underpressure threshold that are not within the target pressure operation range, where the overpressure threshold exceeds the target pressure operation range and the underpressure threshold is lower than the target pressure operation range, and a pressure anomaly determination module configured to determine whether there is a pressure anomaly in the air-conditioning compressor according to the collected operation pressure in combination with the determined overpressure threshold and underpressure threshold.
In embodiments, the operating pressure comprises a suction pressure and/or a discharge pressure, and accordingly the pressure anomaly comprises any of an exhaust over-pressure anomaly, an exhaust under-pressure anomaly, a suction over-pressure anomaly, and a suction under-pressure anomaly.
In , the frequency limiting and down converting unit is used to control the air conditioner compressor to perform the down converting or frequency limiting operation, wherein the down converting or frequency limiting operation of times includes that the air conditioner compressor continuously operates at a frequency limiting or down converting frequency for a third predetermined time period, wherein the frequency limiting or down converting frequency does not exceed a frequency corresponding to the current state.
In , the frequency-limited down-converter unit is configured to determine a pressure change rate of the collected operating pressure within periods of time, determine a frequency change rate of an operating frequency of the compressor according to the pressure change rate, and drive the air-conditioning compressor to operate according to the frequency change rate, wherein the frequency change rate is smaller than the pressure change rate.
A further embodiment of the invention provides automobiles which are equipped with the automobile air conditioner compressor control device.
For more details and effects of the control device for the automobile air conditioner compressor and the automobile according to the embodiment of the present invention, reference may be made to the above description of the embodiment of the control method for the automobile air conditioner compressor, and further description is omitted here.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not describe every possible combination.
Those skilled in the art will appreciate that all or part of the steps in the method according to the above embodiments may be implemented by instructing the relevant hardware through a program, where the program is stored in storage media, and includes several instructions for causing a single chip microcomputer, a chip or a processor (processor) to execute all or part of the steps in the method according to the embodiments of the present application.
In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.
Claims (16)
1, A control method for compressor of air conditioner of car, including:
collecting the operating pressure of the air-conditioning compressor;
acquiring a target pressure operation range suitable for normal operation of an air conditioner compressor in a current state;
judging whether the air conditioner compressor has pressure abnormity or not according to the collected operating pressure and the target pressure operating range; and
and if the pressure of the air-conditioning compressor is abnormal, controlling the air-conditioning compressor to implement frequency reduction or frequency limitation operation.
2. The method of claim 1, wherein the obtaining a pressure operating range of the air conditioner compressor suitable for normal operation in a current state comprises:
acquiring a rotating speed parameter of the air conditioner compressor in the current state;
and inquiring a standard pressure gauge according to the acquired rotating speed parameter to determine a corresponding target pressure operating range, wherein the standard pressure gauge stores a plurality of relations between the rotating speed parameter and the pressure operating range.
3. The method of claim 1, wherein the collecting the operating pressure of the air conditioning compressor comprises:
the operating pressure of the air-conditioning compressor is detected via a pressure sensor, or
And performing communication interaction with an upper computer system of an air conditioner to obtain the operating pressure of the air conditioner compressor.
4. The method of claim 1, wherein the determining whether the air conditioner compressor has a pressure abnormality according to the collected operating pressure and the target pressure operating range comprises:
determining an overpressure threshold and an underpressure threshold that are not within the target pressure operating range, wherein the overpressure threshold exceeds the target pressure operating range and the underpressure threshold is below the target pressure operating range;
and judging whether the air conditioner compressor has pressure abnormity or not according to the collected operating pressure and the determined overpressure threshold value and undervoltage threshold value.
5. The method of claim 4, wherein the determining whether the air conditioner compressor has a pressure anomaly based on the determined over-pressure threshold and under-pressure threshold comprises:
when the collected operation pressure is larger than the overpressure threshold value or smaller than the underpressure threshold value, determining that the air conditioner compressor has pressure abnormity; or
Determining that a pressure anomaly exists for the air conditioning compressor when the collected operating pressure exceeds the target pressure operating range and is less than the over-pressure threshold for a th predetermined period of time or when the collected operating pressure is less than the target pressure operating range and is greater than the under-pressure threshold for a second predetermined period of time.
6. The method of claim 5, wherein the operating pressure comprises a suction pressure and/or a discharge pressure, and accordingly the pressure anomaly comprises any of a discharge over-pressure anomaly, a discharge under-pressure anomaly, a suction over-pressure anomaly, and a suction under-pressure anomaly.
7. The method of claim 6, wherein the determining whether the air conditioner compressor has a pressure anomaly comprises:
determining that a pressure abnormality exists in the air conditioning compressor when the collected suction pressure exceeds the collected discharge pressure.
8. The method of any of claims 1-7, wherein the controlling the air conditioning compressor to perform a down-converting or frequency-limiting operation comprises:
controlling the air conditioner compressor to perform the frequency-reducing or frequency-limiting operation once, wherein times of the frequency-reducing or frequency-limiting operation comprise:
the air conditioner compressor continuously operates at the frequency limiting frequency or the frequency reducing frequency for a third predetermined period of time,
wherein the frequency limiting frequency or the frequency reducing frequency does not exceed the frequency corresponding to the current state.
9. The method of any of claims 1-7, wherein the controlling the air conditioning compressor to perform a down-converting or frequency-limiting operation comprises:
determining a pressure rate of change of the collected operating pressure over a period of ;
and determining the frequency change rate of the running frequency of the compressor according to the pressure change rate, and driving the air-conditioning compressor to work according to the frequency change rate, wherein the frequency change rate is smaller than the pressure change rate.
10, A control device for compressor of air conditioner of car, comprising:
the pressure acquisition unit is used for acquiring the operating pressure of the air-conditioning compressor;
the target pressure operation range acquisition unit is used for acquiring a target pressure operation range suitable for normal operation of the air conditioner compressor in the current state;
the pressure abnormity judging unit is used for judging whether the air conditioner compressor has pressure abnormity according to the collected operating pressure and the target pressure operating range; and
and the frequency limiting and reducing unit is used for controlling the air-conditioning compressor to implement frequency reduction or frequency limiting operation if the pressure of the air-conditioning compressor is abnormal.
11. The apparatus according to claim 10, wherein the target pressure operating range acquiring unit includes:
the rotating speed parameter acquisition module is used for acquiring the rotating speed parameter of the air conditioner compressor in the current state;
and the target pressure operating range determining module is used for inquiring a standard pressure gauge according to the acquired rotating speed parameter so as to determine a corresponding target pressure operating range, wherein the standard pressure gauge stores a plurality of relations between the rotating speed parameter and the pressure operating range.
12. The apparatus of claim 10, wherein the pressure acquisition unit comprises:
the pressure sensor is used for acquiring the operating pressure of the air-conditioning compressor; or
And the upper computer system interaction module is used for carrying out communication interaction with an air conditioner upper computer system so as to obtain the operating pressure of the air conditioner compressor.
13. The apparatus according to claim 10, wherein the pressure abnormality determination unit includes:
a threshold determination module to determine an overpressure threshold and an underpressure threshold that are not within the target pressure operating range, wherein the overpressure threshold exceeds the target pressure operating range and the underpressure threshold is below the target pressure operating range;
and the pressure abnormity judgment module is used for judging whether the air conditioner compressor has pressure abnormity according to the collected operating pressure in combination with the determined overpressure threshold value and the determined underpressure threshold value.
14. The apparatus of claim 13 wherein the operating pressure comprises a suction pressure and/or a discharge pressure, and accordingly the pressure anomaly comprises any of a discharge over-pressure anomaly, a discharge under-pressure anomaly, a suction over-pressure anomaly, and a suction under-pressure anomaly.
15. The apparatus of any of , wherein the frequency-limited down-conversion unit is configured to control the air conditioner compressor to perform the down-conversion or frequency-limited operation once, wherein the down-conversion or frequency-limited operation times includes that the air conditioner compressor continuously operates at a frequency-limited or down-conversion frequency for a third predetermined time period, wherein the frequency-limited or down-conversion frequency does not exceed a frequency corresponding to the current status.
16. The apparatus of any of , wherein the frequency limited down converter unit is configured to determine a pressure change rate of the collected operating pressure during hours, determine a frequency change rate of the operating frequency of the compressor according to the pressure change rate, and drive the air conditioner compressor to operate according to the frequency change rate, wherein the frequency change rate is smaller than the pressure change rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810792964.2A CN110733314A (en) | 2018-07-18 | 2018-07-18 | Automobile air conditioner compressor control method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810792964.2A CN110733314A (en) | 2018-07-18 | 2018-07-18 | Automobile air conditioner compressor control method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110733314A true CN110733314A (en) | 2020-01-31 |
Family
ID=69235037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810792964.2A Pending CN110733314A (en) | 2018-07-18 | 2018-07-18 | Automobile air conditioner compressor control method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110733314A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5203179A (en) * | 1992-03-04 | 1993-04-20 | Ecoair Corporation | Control system for an air conditioning/refrigeration system |
| JPH09280700A (en) * | 1996-04-10 | 1997-10-31 | Denso Corp | Failure detector of air conditioner |
| JP2000097482A (en) * | 1998-09-21 | 2000-04-04 | Matsushita Refrig Co Ltd | Air conditioner |
| CN1573261A (en) * | 2003-06-20 | 2005-02-02 | 三电有限公司 | Refrigeration cycle control unit |
| CN1607361A (en) * | 2003-10-16 | 2005-04-20 | Lg电子株式会社 | Method for controlling air conditioner |
| CN103868195A (en) * | 2012-12-14 | 2014-06-18 | 海信（山东）空调有限公司 | Control method for preventing overload operation of air-conditioner compressor |
| CN107091517A (en) * | 2017-06-30 | 2017-08-25 | 珠海格力电器股份有限公司 | Protection control method and device for air conditioning unit and air conditioning unit |
-
2018
- 2018-07-18 CN CN201810792964.2A patent/CN110733314A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5203179A (en) * | 1992-03-04 | 1993-04-20 | Ecoair Corporation | Control system for an air conditioning/refrigeration system |
| JPH09280700A (en) * | 1996-04-10 | 1997-10-31 | Denso Corp | Failure detector of air conditioner |
| JP2000097482A (en) * | 1998-09-21 | 2000-04-04 | Matsushita Refrig Co Ltd | Air conditioner |
| CN1573261A (en) * | 2003-06-20 | 2005-02-02 | 三电有限公司 | Refrigeration cycle control unit |
| CN1607361A (en) * | 2003-10-16 | 2005-04-20 | Lg电子株式会社 | Method for controlling air conditioner |
| CN103868195A (en) * | 2012-12-14 | 2014-06-18 | 海信（山东）空调有限公司 | Control method for preventing overload operation of air-conditioner compressor |
| CN107091517A (en) * | 2017-06-30 | 2017-08-25 | 珠海格力电器股份有限公司 | Protection control method and device for air conditioning unit and air conditioning unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8123490B2 (en) | Apparatus and method for controlling electric compressor | |
| US20140360211A1 (en) | Controlling HVAC Condenser Fans Using Pressure Sensors | |
| CN103807987A (en) | High-pressure prevention system and method for air conditioner | |
| CN107421056B (en) | Variable frequency air conditioner, shutdown control method and computer readable storage medium | |
| KR20190029186A (en) | Fault diagnosis of timer for engine off time monitoring | |
| US12126291B2 (en) | Control device, electric compressor, ripple voltage abnormality cause determination method and program | |
| EP1726464A2 (en) | Self-learning control system and method for controlling fan speed | |
| CN110733314A (en) | Automobile air conditioner compressor control method and device | |
| EP2792960B1 (en) | Method of monitoring a heat exchanger arrangement and heat exchanger monitoring system | |
| US20200313582A1 (en) | Motor control device, electric compressor equipped with same, air-conditioner for vehicle, motor control method, and motor control program | |
| US7104075B2 (en) | Arrangement and method for controlling the discharge of carbon dioxide for air conditioning systems | |
| KR101701315B1 (en) | Failure diagnosis apparatus for electronic expansion valve | |
| CN108700051A (en) | Method for detecting valve locking of coolant compressor and control system of coolant compressor | |
| JP6890072B2 (en) | Control device for electric compressor, electric compressor, air conditioner for mobile body, and control method for electric compressor | |
| WO2025050702A1 (en) | Vehicle air conditioning system remote diagnosis method and system, platform and storage medium | |
| CN114619870B (en) | Grille control method, device, equipment and medium | |
| JPH11108468A (en) | Air conditioner | |
| CN104896691A (en) | Air conditioner and operation control method therefor | |
| CN113959085B (en) | Air conditioner electric compressor protection method and system, air conditioner controller and storage medium | |
| US20120144849A1 (en) | Method and system for controlling automotive hvac apparatus | |
| EP4100651B1 (en) | A method for operating an electric air compressor assembly | |
| CN111231605B (en) | Vehicle-mounted air conditioner control method for avoiding high-voltage protection and air conditioner | |
| KR20140101182A (en) | Heat pump system and control method thereof | |
| US9528718B2 (en) | HVAC motor load balancing | |
| CN119189907A (en) | A fault identification method and device based on electric vehicle thermal management system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |