CN110671742A - Control method and device of multi-split air conditioning system and multi-split air conditioning system - Google Patents
Control method and device of multi-split air conditioning system and multi-split air conditioning system Download PDFInfo
- Publication number
- CN110671742A CN110671742A CN201911016317.3A CN201911016317A CN110671742A CN 110671742 A CN110671742 A CN 110671742A CN 201911016317 A CN201911016317 A CN 201911016317A CN 110671742 A CN110671742 A CN 110671742A
- Authority
- CN
- China
- Prior art keywords
- pressure sensor
- conditioning system
- air conditioning
- split air
- outdoor unit
- 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.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioners, in particular to a control method and device of a multi-split air conditioning system and the multi-split air conditioning system. The control method of the multi-split air conditioning system comprises the following steps: when a fault signal of the pressure sensor is detected, the number of outdoor units with pressure sensor faults is obtained; when the number of the outdoor units with pressure sensor faults is less than the total number of all the outdoor units, acquiring pressure sensor data in the outdoor units which normally operate according to the fault signal types of the pressure sensors and the operation mode of the multi-split air-conditioning system; and controlling the outdoor unit with the pressure sensor fault to continuously keep normal operation in the current mode according to the pressure sensor data in the normally operated outdoor unit. Therefore, when the sensor fails, the whole multi-split air conditioning system is guaranteed not to stop, the outdoor unit with the sensor failure is controlled to continue to normally operate, and unpleasant user experience caused by the stop of the outdoor unit is avoided.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method and device of a multi-split air conditioning system and the multi-split air conditioning system.
Background
The multi-split air conditioning system is widely applied to occasions such as offices, production workshops and the like due to the partial load characteristic and the remarkable energy-saving effect of the multi-split air conditioning system. At present, in a common multi-split air conditioning system, the multi-split air conditioning system usually includes a plurality of outdoor units, and in actual use, if one outdoor unit pressure sensor fails, the whole system is shut down, and user experience is seriously affected.
Disclosure of Invention
The present invention is directed to solving the above-mentioned problems, and provides a method and an apparatus for controlling a multi-split air conditioning system, and a multi-split air conditioning system, which control the air conditioning system to continue operating when a pressure sensor fails.
In order to solve the above problems, the present invention provides a method for controlling a multi-split air conditioning system, the multi-split air conditioning system including at least two outdoor units, each outdoor unit having a pressure sensor, the method including the steps of:
when a fault signal of the pressure sensor is detected, and when the operation mode of the multi-split air conditioning system and the fault signal type of the pressure sensor meet preset conditions, acquiring the number of the outdoor units with the faults of the pressure sensor;
when the number of the outdoor units with pressure sensor faults is less than the total number of all the outdoor units, acquiring pressure sensor data in the outdoor units which normally operate according to the fault signal types of the pressure sensors and the operation mode of the multi-split air-conditioning system;
and controlling the outdoor unit with the pressure sensor fault to continuously keep normal operation in the current mode according to the pressure sensor data in the normally operated outdoor unit.
Therefore, the multi-split air-conditioning system ensures that the whole multi-split air-conditioning system does not stop when a sensor fails in different operation modes, and controls the outdoor unit with the sensor failure to continue to operate normally by acquiring the pressure sensor data of the outdoor unit with the normal operation as the reference of the failure sensor of the outdoor unit with the sensor failure, so that unpleasant user experience caused by the stop of the outdoor unit is avoided.
Optionally, the pressure sensor includes a high-pressure sensor, and when the operation mode of the multi-split air conditioning system is a cooling mode and the fault signal type of the pressure sensor is a fault signal of the high-pressure sensor, the outdoor unit with the fault of the pressure sensor is controlled to continue to keep normal operation in the current mode.
Therefore, the fault of the high-voltage sensor is shielded, and repeated fault shutdown of the unit caused by the fault of the high-voltage sensor is avoided.
Optionally, the pressure sensor comprises a low-pressure sensor, the preset condition includes that the operation mode of the multi-split air conditioning system is a cooling mode and the type of the pressure sensor fault signal is a low-pressure sensor fault signal;
the acquiring of the pressure sensor data in the outdoor unit which normally operates according to the fault signal type of the pressure sensor and the operation mode of the multi-split air conditioning system specifically includes:
and acquiring the pressure value of the low-pressure sensor in the outdoor unit which normally operates.
Therefore, in the cooling mode, when the low-pressure sensor fails, the outdoor unit with the pressure sensor failure does not stop, the outdoor unit with the pressure sensor failure is controlled to continue to operate by using the numerical value of the low-pressure sensor of the normal unit as a reference, and unpleasant user experience caused by the stop of the multi-split air conditioning system is avoided.
Optionally, the controlling, according to the pressure sensor data in the outdoor unit that normally operates, the outdoor unit that has a pressure sensor failure to continue to keep operating normally in the current mode specifically includes:
determining a low-pressure average value of pressure values of the low-pressure sensors in all the outdoor units which normally operate;
and taking the low-pressure average value as a pressure value of the low-pressure sensor of the outdoor unit with the pressure sensor fault, and controlling the outdoor unit with the pressure sensor fault to continuously keep normal operation in the current mode according to the low-pressure average value.
Therefore, the low-pressure stability of the outdoor unit with faults is improved by calculating the low-pressure average value of the pressure values of the low-pressure sensors in all the outdoor units which normally operate.
Optionally, the pressure sensor includes a low pressure sensor, and when the operation mode of the multi-split air conditioning system is a heating mode and the fault signal type of the pressure sensor is a low pressure sensor fault signal, the outdoor unit with the pressure sensor fault is controlled to continue to keep normal operation in the current mode.
Therefore, the low-voltage sensor fault is shielded, and repeated fault shutdown of the unit caused by the low-voltage sensor fault is avoided.
Optionally, the pressure sensor comprises a high-pressure sensor, and the preset condition includes that the operation mode of the multi-split air conditioning system is a heating mode and the type of the fault signal of the pressure sensor is a fault signal of the high-pressure sensor;
the acquiring of the pressure sensor data in the outdoor unit which normally operates according to the fault signal type of the pressure sensor and the operation mode of the multi-split air conditioning system specifically includes:
and acquiring the pressure value of the high-pressure sensor in the normally-operated outdoor unit.
Therefore, in the heating mode, when the high-pressure sensor fails, the outdoor unit with the pressure sensor failure does not stop, the outdoor unit with the pressure sensor failure is controlled to continue to operate by using the numerical value of the high-pressure sensor of the normal unit as a reference, and unpleasant user experience caused by the stop of the multi-split air conditioning system is avoided.
Optionally, the controlling, according to the pressure sensor data in the outdoor unit that normally operates, the outdoor unit that has a pressure sensor failure to continue to keep operating normally in the current mode specifically includes:
determining a high-pressure average value of pressure values of the high-pressure sensors in all the normally operating outdoor units;
and taking the high-voltage average value as a pressure value of the high-voltage sensor of the outdoor unit with the pressure sensor fault, and controlling the outdoor unit with the pressure sensor fault to continuously keep normal operation in the current mode according to the high-voltage average value.
Therefore, the high pressure stability of the outdoor unit with faults is improved by calculating the high pressure average value of the pressure values of the high pressure sensors in all the outdoor units which normally operate.
The present invention also provides a control device of a multi-split air conditioning system, including:
the calculation unit is used for acquiring the number of the outdoor units with pressure sensor faults when fault signals of the pressure sensors are detected and when the operation mode of the multi-split air conditioning system and the fault signal types of the pressure sensors meet preset conditions;
an obtaining unit, configured to obtain pressure sensor data of the outdoor units that normally operate according to a fault signal type of the pressure sensor and an operation mode of the multi-split air conditioning system when the number of the outdoor units in which a pressure sensor fault occurs is less than the total number of all the outdoor units;
and the control unit is used for controlling the outdoor unit with the pressure sensor fault to continuously keep the normal operation in the current mode according to the pressure sensor data in the outdoor unit which normally operates.
The control device of the air conditioning system and the control method of the air conditioning system have the same beneficial effects, and are not repeated herein.
The invention also provides a multi-split air conditioning system, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium is used for storing a computer program, and the computer program is read by the processor and runs to realize the control method of the multi-split air conditioning system.
Optionally, the multi-split air conditioning system includes at least two outdoor units, each of the outdoor units is provided with a pressure sensor, and the pressure sensors include a high-pressure sensor and a low-pressure sensor.
The multi-split air conditioning system and the control device of the air conditioning system have the same beneficial effects, and are not repeated herein.
Drawings
FIG. 1 is a schematic diagram of a multi-split air conditioning system according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a control method of a multi-split air conditioning system according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a control device of a multi-split air conditioning system according to an embodiment of the present invention.
Description of reference numerals:
11-calculation unit, 12-acquisition unit, 13-control unit.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In addition, all directions or positional relationships mentioned in the embodiments of the present invention are positional relationships based on the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not imply or imply that the referred device or element must have a specific orientation, and are not to be construed as limiting the present invention.
One embodiment of the present invention provides an air conditioning system, as shown in fig. 1, the multi-split air conditioning system includes at least two outdoor units connected in parallel, each outdoor unit is provided with a pressure sensor, and the pressure sensor includes a high pressure sensor and a low pressure sensor. The high-pressure sensor is arranged on the exhaust pipe and used for measuring the pressure of the condenser; the low pressure sensor is arranged on the air suction pipe and used for measuring evaporation pressure. The oil-liquid separator is arranged between the compressor and the four-way valve, an input port of the oil-liquid separator is communicated with an output end of the compressor, an air outlet of the oil-liquid separator is communicated with the four-way valve, and an oil outlet of the oil-liquid separator is communicated with an input end of the compressor. The gas-liquid separator is arranged between the compressor and the four-way valve and comprises an input port and an output port, the input port of the gas-liquid separator is communicated with the four-way valve, and the output port of the gas-liquid separator is communicated with the input end of the compressor.
In general, when the pressure value measured by the pressure sensor fluctuates frequently and sharply or the pressure sensor does not detect pressure data, the pressure sensor gives an alarm to prompt the pressure sensor to have a fault, so that the whole air conditioning system is stopped, and poor user experience is caused.
An embodiment of the present invention provides a method for controlling a multi-split air conditioning system, as shown in fig. 2, where the multi-split air conditioning system includes at least two outdoor units, each outdoor unit is provided with a pressure sensor, and the method includes:
s1: when a fault signal of the pressure sensor is detected, and when the operation mode of the multi-split air conditioning system and the fault signal type of the pressure sensor meet preset conditions, acquiring the number of the outdoor units with the faults of the pressure sensor;
s2: when the number of the outdoor units with pressure sensor faults is less than the total number of all the outdoor units, acquiring pressure sensor data in the outdoor units which normally operate according to the fault signal types of the pressure sensors and the operation mode of the multi-split air-conditioning system;
s3: and controlling the outdoor unit with the pressure sensor fault to continuously keep normal operation in the current mode according to the pressure sensor data in the normally operated outdoor unit.
In S1, the operation mode of the multi-split air conditioning system includes a heating mode and a cooling mode, and the preset condition includes that the operation mode of the multi-split air conditioning system is the cooling mode and the pressure sensor fault signal is a low-pressure sensor fault signal; that is, when the operation mode of the multi-split air conditioning system is the cooling mode, the acquisition of the number of the outdoor units in which the pressure sensor malfunction occurs is performed only when the pressure sensor malfunction signal is the low pressure sensor malfunction signal. At this time, in S2, the acquiring pressure sensor data in the outdoor unit, which is normally operated, according to the type of the pressure sensor malfunction signal and the operation mode of the multi-split air conditioning system includes: and acquiring pressure data of the low-pressure sensor in the normally-operated outdoor unit. In S3, the pressure value of the low pressure sensor of the outdoor unit that has failed in the pressure sensor is used as a reference for the low pressure sensor of the outdoor unit that has failed in the pressure sensor, and the outdoor unit that has failed in the pressure sensor is controlled to continue to operate normally in the current mode. Here, the current mode refers to an operation mode of the multi-split air conditioning system when a pressure sensor malfunction occurs. The advantage of setting up like this lies in, when the low pressure sensor trouble takes place during the refrigeration mode, the off-premises station that takes place the pressure sensor trouble does not shut down, through utilizing the numerical value of the low pressure sensor of normal unit as the reference, controls the off-premises station that takes place the pressure sensor trouble and continues the operation, avoids the unpleasant user experience that the shut down of multi-connected air conditioning system caused.
Optionally, an operation mode of the multi-split air conditioning system is a cooling mode, and the step of controlling the outdoor unit with the pressure sensor failure to continue operating according to the pressure sensor data in the normally operating outdoor unit includes: calculating a low-voltage average value of pressure values of the low-voltage sensors in all normally operating outdoor units; and taking the low-voltage average value as the numerical value of the low-voltage sensor of the outdoor unit with the pressure sensor fault, and controlling the outdoor unit with the pressure sensor fault to continuously keep the normal operation of the current mode according to the low-voltage average value. Here, the low pressure average value means an average value of pressure values of the low pressure sensors in all the outdoor units normally operating. That is, in order to improve the low pressure stability in the outdoor unit having a failure, pressure values of the low pressure sensors in all the outdoor units which normally operate are obtained, and a low pressure average value of the pressure values of the low pressure sensors in all the outdoor units which normally operate is calculated, and the low pressure average value is used as a value of the low pressure sensor of the outdoor unit having a failure of the pressure sensor, and the low pressure sensor of the outdoor unit having a failure of the pressure sensor is controlled to continue to operate normally in the current mode with the low pressure average value as a reference.
Optionally, the outdoor units include A, B, C and D four outdoor units, the operation mode of the multi-split air conditioning system is a cooling mode, when the outdoor units a and B have a fault of the low-voltage sensors, the values of the low-voltage sensors in C and D are obtained, the low-voltage average value of the values of the low-voltage sensors in C and D is calculated, and the outdoor units a and B are controlled to continue to operate normally in the current mode according to the low-voltage average value as the values of the low-voltage sensors in a and B.
Optionally, when the operation mode of the multi-split air conditioning system and the type of the pressure sensor fault signal do not satisfy the preset condition, and when the operation mode of the multi-split air conditioning system is a cooling mode and the sensor fault signal is a high-pressure sensor fault signal, controlling the outdoor unit with the sensor fault to continue to keep normal operation in the current mode. That is, when the operation mode of the multi-split air conditioning system is the cooling mode, if a high pressure sensor malfunction occurs, only the malfunction of the high pressure sensor is prompted, but the outdoor unit in which the high pressure sensor malfunction occurs is controlled to continue to normally operate. At the moment, the system is in a refrigeration mode, and the high pressure of the system plays a role in protection according to the low pressure output of the system in the refrigeration mode. Therefore, the fault of the high-voltage sensor is shielded, and repeated fault shutdown of the unit caused by the fault of the high-voltage sensor is avoided.
In S1, the preset conditions include that the operation mode of the multi-split air conditioning system is a heating mode and the pressure sensor fault signal is a high-pressure sensor fault signal; that is, when the operation mode of the multi-split air conditioning system is the heating mode, the acquisition of the number of outdoor units in which the pressure sensor malfunction occurs is performed only when the pressure sensor malfunction signal is the high pressure sensor malfunction signal. At this time, in S2, the acquiring pressure sensor data in the outdoor unit, which is normally operated, according to the type of the pressure sensor malfunction signal and the operation mode of the multi-split air conditioning system includes: and acquiring pressure data of the high-pressure sensor in the normally-operated outdoor unit. In S3, the pressure value of the high pressure sensor of the outdoor unit that has failed in the pressure sensor is referred to as the high pressure sensor of the outdoor unit that has failed in the pressure sensor, and the outdoor unit that has failed in the pressure sensor is controlled to continue normal operation. The advantage of setting up like this lies in, when the high pressure sensor trouble takes place during the heating mode, the off-premises station that takes place the pressure sensor trouble does not shut down, through utilizing the numerical value of the high pressure sensor of normal unit as the reference, controls the off-premises station that takes place the pressure sensor trouble and continues the operation, avoids the unpleasant user experience that the shut down of multi-split air conditioning system caused.
Optionally, when the operation mode of the multi-split air conditioning system and the type of the pressure sensor fault signal do not satisfy preset conditions, and when the operation mode of the multi-split air conditioning system is a heating mode and the sensor fault signal is a low-pressure sensor signal, controlling the outdoor unit with the sensor fault to continue to keep normal operation in a current mode. That is, when the operation mode of the multi-split air conditioning system is the heating mode, if a low pressure sensor malfunction occurs, only the malfunction of the low pressure sensor is prompted, but the outdoor unit in which the low pressure sensor malfunction occurs is controlled to continue normal operation. At the moment, the system is in a heating mode, and the low voltage of the system plays a role in protection according to the high voltage output of the system in the heating mode. In the heating mode, the outdoor units are connected in parallel, and the high-pressure sides of different outdoor units are communicated, so that as long as the high-pressure sensor of any outdoor unit is normal, the high-pressure sensor of the outdoor unit with the high-pressure sensor failure can be defaulted to be a normal value, and the normal operation of the system is controlled by the high-pressure sensor. Therefore, the low-voltage sensor fault is shielded, and repeated fault shutdown of the unit caused by the low-voltage sensor fault is avoided.
Optionally, the step of controlling the outdoor unit with the pressure sensor failure to continue to keep the current mode normal according to the pressure sensor data in the normally operating outdoor unit specifically includes: calculating a high-voltage average value of pressure values of the high-voltage sensors in all the normally operating outdoor units; and taking the high-voltage average value as the numerical value of the high-voltage sensor of the outdoor unit with the pressure sensor fault, and controlling the outdoor unit with the pressure sensor fault to continuously keep the normal operation of the current mode according to the high-voltage average value. Here, the high pressure average value means an average value of pressure values of the high pressure sensors in all the outdoor units normally operating. That is, in order to maintain the high pressure stability in the outdoor unit having a failure, pressure values of the high pressure sensors in all the normally operating outdoor units are obtained, and a high pressure average value of the pressure values of the high pressure sensors in all the normally operating outdoor units is calculated, and the high pressure average value is used as a value of the high pressure sensor of the outdoor unit having a failure of the pressure sensor, and the high pressure sensor of the outdoor unit having a failure of the pressure sensor is controlled to continue to operate normally in the current mode with the high pressure average value as a reference.
Optionally, the outdoor units include A, B, C and D four outdoor units, the operation mode of the multi-split air conditioning system is a heating mode, when the outdoor units a and B have a fault of the high voltage sensors, the values of the high voltage sensors in C and D are obtained, the high voltage average value of the values of the high voltage sensors in C and D is calculated, and the operation mode a and B are controlled to continue to operate normally in the current mode according to the high voltage average value as the values of the high voltage sensors in a and B.
The multi-split air conditioning system ensures that the whole multi-split air conditioning system does not stop when a sensor fails in different operation modes, and controls the outdoor unit with the sensor failure to continuously keep the normal operation of the current mode by acquiring the pressure sensor data of the outdoor unit which normally operates and using the pressure sensor data as the reference of the failure sensor of the outdoor unit with the sensor failure, thereby avoiding unpleasant user experience caused by the stop of the outdoor unit.
Another embodiment of the present invention provides a control apparatus for a multi-split air conditioning system, including: the calculation unit 11 is configured to, when a fault signal of the pressure sensor is detected, acquire the number of outdoor units in which a pressure sensor fault occurs when an operation mode of the multi-split air conditioning system and a fault signal type of the pressure sensor satisfy preset conditions;
an obtaining unit 12, configured to obtain pressure sensor data of the outdoor units that normally operate according to a fault signal type of the pressure sensor and an operation mode of the multi-split air conditioning system when the number of the outdoor units in which a pressure sensor fault occurs is less than the total number of all the outdoor units;
and the control unit 13 is configured to control the outdoor unit with the pressure sensor failure to continue to operate normally in the current mode according to the pressure sensor data in the outdoor unit operating normally.
The control device of the multi-split air conditioning system has the same beneficial effects as the control method of the multi-split air conditioning system, and is not repeated herein.
Another embodiment of the present invention provides a multi-split air conditioning system, including a processor and a computer-readable storage medium storing a computer program, where the computer program is read by the processor and executed to implement the control method of the multi-split air conditioning system. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The multi-split air conditioning system has the same beneficial effects as the control method of the multi-split air conditioning system, and is not repeated herein.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A control method of a multi-split air conditioning system is characterized in that the multi-split air conditioning system comprises at least two outdoor units, each outdoor unit is provided with a pressure sensor, and the method comprises the following steps:
when a fault signal of the pressure sensor is detected, and when the operation mode of the multi-split air conditioning system and the fault signal type of the pressure sensor meet preset conditions, acquiring the number of the outdoor units with the faults of the pressure sensor;
when the number of the outdoor units with pressure sensor faults is less than the total number of all the outdoor units, acquiring pressure sensor data in the outdoor units which normally operate according to the fault signal types of the pressure sensors and the operation mode of the multi-split air-conditioning system;
and controlling the outdoor unit with the pressure sensor fault to continuously keep normal operation in the current mode according to the pressure sensor data in the normally operated outdoor unit.
2. The method of claim 1, wherein the pressure sensor comprises a high pressure sensor, and when the operation mode of the multi-split air conditioning system is a cooling mode and the type of the fault signal of the pressure sensor is a high pressure sensor fault signal, the outdoor unit having the pressure sensor fault is controlled to continue to operate normally in a current mode.
3. The control method of a multi-split air conditioning system as claimed in claim 1 or 2, wherein the pressure sensor includes a low pressure sensor, the preset conditions include that the operation mode of the multi-split air conditioning system is a cooling mode and the type of the pressure sensor fault signal is a low pressure sensor fault signal;
the acquiring of the pressure sensor data in the outdoor unit which normally operates according to the fault signal type of the pressure sensor and the operation mode of the multi-split air conditioning system specifically includes:
and acquiring the pressure value of the low-pressure sensor in the outdoor unit which normally operates.
4. The method of claim 3, wherein the controlling the outdoor unit having a pressure sensor failure according to the pressure sensor data of the outdoor unit operating normally continues to operate normally in a current mode, specifically comprises:
determining a low-pressure average value of pressure values of the low-pressure sensors in all the outdoor units which normally operate;
and taking the low-pressure average value as a pressure value of the low-pressure sensor of the outdoor unit with the pressure sensor fault, and controlling the outdoor unit with the pressure sensor fault to continuously keep normal operation in the current mode according to the low-pressure average value.
5. The method of claim 1, wherein the pressure sensor comprises a low pressure sensor, and when the operation mode of the multi-split air conditioning system is a heating mode and the type of the fault signal of the pressure sensor is a low pressure sensor fault signal, the outdoor unit having the pressure sensor fault is controlled to continue to keep a normal operation in a current mode.
6. The control method of a multi-split air conditioning system as claimed in claim 1 or 5, wherein the pressure sensor includes a high pressure sensor, the preset conditions include that the operation mode of the multi-split air conditioning system is a heating mode and the type of the pressure sensor fault signal is a high pressure sensor fault signal;
the acquiring of the pressure sensor data in the outdoor unit which normally operates according to the fault signal type of the pressure sensor and the operation mode of the multi-split air conditioning system specifically includes:
and acquiring the pressure value of the high-pressure sensor in the normally-operated outdoor unit.
7. The method of claim 6, wherein the controlling the outdoor unit having a pressure sensor failure according to the pressure sensor data of the outdoor unit operating normally to continue to operate normally in a current mode comprises:
determining a high-pressure average value of pressure values of the high-pressure sensors in all the normally operating outdoor units;
and taking the high-voltage average value as a pressure value of the high-voltage sensor of the outdoor unit with the pressure sensor fault, and controlling the outdoor unit with the pressure sensor fault to continuously keep normal operation in the current mode according to the high-voltage average value.
8. A control device of a multi-split air conditioning system, comprising:
the calculating unit (11) is used for acquiring the number of outdoor units with pressure sensor faults when fault signals of the pressure sensors are detected and when the operation mode of the multi-split air conditioning system and the fault signal types of the pressure sensors meet preset conditions;
an acquisition unit (12) for acquiring pressure sensor data in the outdoor units which normally operate according to the type of fault signals of the pressure sensors and the operation mode of the multi-split air conditioning system when the number of the outdoor units in which pressure sensor faults occur is less than the total number of all the outdoor units;
and the control unit (13) is used for controlling the outdoor unit with the pressure sensor fault to continuously keep the normal operation of the current mode according to the pressure sensor data in the outdoor unit in normal operation.
9. A multi-split air conditioning system comprising a processor and a computer-readable storage medium storing a computer program, which is read and executed by the processor, and implementing the control method of the multi-split air conditioning system as set forth in any one of claims 1 to 7.
10. A multi-split air conditioning system as claimed in claim 9, comprising at least two outdoor units, each having a pressure sensor therein, wherein the pressure sensors include a high pressure sensor and a low pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911016317.3A CN110671742B (en) | 2019-10-24 | 2019-10-24 | Control method and device of multi-split air conditioning system and multi-split air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911016317.3A CN110671742B (en) | 2019-10-24 | 2019-10-24 | Control method and device of multi-split air conditioning system and multi-split air conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110671742A true CN110671742A (en) | 2020-01-10 |
| CN110671742B CN110671742B (en) | 2021-08-27 |
Family
ID=69083991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911016317.3A Active CN110671742B (en) | 2019-10-24 | 2019-10-24 | Control method and device of multi-split air conditioning system and multi-split air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110671742B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375287A (en) * | 2021-06-25 | 2021-09-10 | 宁波奥克斯电气股份有限公司 | Low-voltage sensor fault identification control method and device and multi-split air conditioning system |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0217558A2 (en) * | 1985-09-18 | 1987-04-08 | York International Corporation | Diagnostic system for detecting faulty sensors in a refrigeration system |
| JP2001182984A (en) * | 1999-12-22 | 2001-07-06 | Matsushita Refrig Co Ltd | Air conditioner |
| CN1987247A (en) * | 2005-12-22 | 2007-06-27 | 乐金电子(天津)电器有限公司 | High pressure increasing preventing method of composite air conditioner |
| CN101487650A (en) * | 2008-01-18 | 2009-07-22 | 三洋电机株式会社 | Cooling system, control device, and control program |
| CN102679495A (en) * | 2012-05-11 | 2012-09-19 | 青岛海尔空调电子有限公司 | Compensation starting method of air conditioner |
| CN103017294A (en) * | 2012-12-05 | 2013-04-03 | 宁波奥克斯电气有限公司 | Heating start method of multi-split air conditioner |
| CN105546732A (en) * | 2015-12-22 | 2016-05-04 | 广东美的暖通设备有限公司 | Multi-connected air conditioning system and outdoor unit pressure relief control method thereof |
| CN107490129A (en) * | 2017-08-02 | 2017-12-19 | 青岛海尔空调电子有限公司 | A kind of method and device of equipment control |
| CN107991019A (en) * | 2017-11-27 | 2018-05-04 | 宁波奥克斯电气股份有限公司 | High pressure sensor fault handling method and device |
| CN108286773A (en) * | 2018-01-15 | 2018-07-17 | 广东美的暖通设备有限公司 | Progress control method, device, air conditioner and computer readable storage medium |
| CN108870701A (en) * | 2018-08-22 | 2018-11-23 | 宁波奥克斯电气股份有限公司 | A kind of multi-online air-conditioning system and pressure detection method |
| CN110107993A (en) * | 2019-05-05 | 2019-08-09 | 珠海格力电器股份有限公司 | The method and device that unit operates normally is ensured after a kind of pressure anomaly |
| CN110260460A (en) * | 2019-05-10 | 2019-09-20 | 珠海格力电器股份有限公司 | Control method, device, equipment and the apparatus of air conditioning of coolant circulating system |
| CN110260458A (en) * | 2019-05-07 | 2019-09-20 | 珠海格力电器股份有限公司 | Equipment obstacle management method, system, controller, air-conditioning and multi-online air-conditioning system |
-
2019
- 2019-10-24 CN CN201911016317.3A patent/CN110671742B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0217558A2 (en) * | 1985-09-18 | 1987-04-08 | York International Corporation | Diagnostic system for detecting faulty sensors in a refrigeration system |
| JP2001182984A (en) * | 1999-12-22 | 2001-07-06 | Matsushita Refrig Co Ltd | Air conditioner |
| CN1987247A (en) * | 2005-12-22 | 2007-06-27 | 乐金电子(天津)电器有限公司 | High pressure increasing preventing method of composite air conditioner |
| CN101487650A (en) * | 2008-01-18 | 2009-07-22 | 三洋电机株式会社 | Cooling system, control device, and control program |
| CN102679495A (en) * | 2012-05-11 | 2012-09-19 | 青岛海尔空调电子有限公司 | Compensation starting method of air conditioner |
| CN103017294A (en) * | 2012-12-05 | 2013-04-03 | 宁波奥克斯电气有限公司 | Heating start method of multi-split air conditioner |
| CN105546732A (en) * | 2015-12-22 | 2016-05-04 | 广东美的暖通设备有限公司 | Multi-connected air conditioning system and outdoor unit pressure relief control method thereof |
| CN107490129A (en) * | 2017-08-02 | 2017-12-19 | 青岛海尔空调电子有限公司 | A kind of method and device of equipment control |
| CN107991019A (en) * | 2017-11-27 | 2018-05-04 | 宁波奥克斯电气股份有限公司 | High pressure sensor fault handling method and device |
| CN108286773A (en) * | 2018-01-15 | 2018-07-17 | 广东美的暖通设备有限公司 | Progress control method, device, air conditioner and computer readable storage medium |
| CN108870701A (en) * | 2018-08-22 | 2018-11-23 | 宁波奥克斯电气股份有限公司 | A kind of multi-online air-conditioning system and pressure detection method |
| CN110107993A (en) * | 2019-05-05 | 2019-08-09 | 珠海格力电器股份有限公司 | The method and device that unit operates normally is ensured after a kind of pressure anomaly |
| CN110260458A (en) * | 2019-05-07 | 2019-09-20 | 珠海格力电器股份有限公司 | Equipment obstacle management method, system, controller, air-conditioning and multi-online air-conditioning system |
| CN110260460A (en) * | 2019-05-10 | 2019-09-20 | 珠海格力电器股份有限公司 | Control method, device, equipment and the apparatus of air conditioning of coolant circulating system |
Non-Patent Citations (2)
| Title |
|---|
| 中铁电气化局集团有限公司编著: "《施工标准化作业系列丛书 城市轨道交通工程施工作业操作手册 下》", 31 December 2014 * |
| 王兴: "变频多联机的一般控制规律及典型控制系统故障分析", 《科技广场》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375287A (en) * | 2021-06-25 | 2021-09-10 | 宁波奥克斯电气股份有限公司 | Low-voltage sensor fault identification control method and device and multi-split air conditioning system |
| CN113375287B (en) * | 2021-06-25 | 2022-04-19 | 宁波奥克斯电气股份有限公司 | Low-voltage sensor fault identification control method and device and multi-split air conditioning system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110671742B (en) | 2021-08-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7343750B2 (en) | Diagnosing a loss of refrigerant charge in a refrigerant system | |
| EP3196564B1 (en) | Control device for air conditioning system, air conditioning system, and method for determining anomaly of air conditioning system | |
| US20200041152A1 (en) | Control method of multi-split air conditioner, system, and computer readable storage medium | |
| CN108195050B (en) | Backup continuous operation control method for multi-split air conditioner and multi-split air conditioner | |
| CN110906505B (en) | Air conditioner refrigerant leakage detection method and air conditioner | |
| CN103575514A (en) | Air conditioner and detection method and device thereof | |
| EP3196563B1 (en) | Control device for air conditioning system, air conditioning system, and method for determining anomaly of air conditioning system | |
| CN112648710A (en) | Exhaust temperature sensor fault detection method and device and air conditioning equipment | |
| CN110671742B (en) | Control method and device of multi-split air conditioning system and multi-split air conditioning system | |
| CN110701726A (en) | Detection method for air conditioner refrigerant leakage | |
| CN111486612A (en) | Multi-split air conditioning system, heating valve leakage detection method and device thereof, and storage medium | |
| CN111503948A (en) | Multi-split air conditioning system, method and device for detecting leakage of refrigeration valve of multi-split air conditioning system and storage medium | |
| US11454409B2 (en) | Failure detection method for air conditioning system | |
| CN110857811A (en) | Air conditioner and air conditioner refrigerant leakage detection method | |
| CN111076350B (en) | Control method and device for starting compressor and air conditioner | |
| CN104198203A (en) | Method and device for detecting operation of air-conditioners | |
| CA2885449C (en) | System for controlling operation of an hvac system having tandem compressors | |
| CN111023440B (en) | Air conditioner low-voltage sensor fault detection method and device and air conditioner | |
| CN109210675B (en) | Control method, device and equipment for air conditioner outdoor fan and air conditioner | |
| CN113280470A (en) | Four-way valve fault detection method and device and air conditioner | |
| KR20110074106A (en) | Air conditioner and control process of the same | |
| CN115200194B (en) | Control method and device of outdoor unit of multi-split air conditioner, air conditioner and medium | |
| KR100360228B1 (en) | Detection device and method of incorrected connection for multiple airconditioner | |
| CN115978756B (en) | Control method for self-repairing of multi-split air conditioner sensor and readable storage medium | |
| JP5625656B2 (en) | Air conditioner |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |