CN112050347B - Control method for improving operation reliability of air conditioner condensing fan and air conditioner - Google Patents
Control method for improving operation reliability of air conditioner condensing fan and air conditioner Download PDFInfo
- Publication number
- CN112050347B CN112050347B CN202010767209.6A CN202010767209A CN112050347B CN 112050347 B CN112050347 B CN 112050347B CN 202010767209 A CN202010767209 A CN 202010767209A CN 112050347 B CN112050347 B CN 112050347B
- Authority
- CN
- China
- Prior art keywords
- fan
- pressure
- air conditioner
- condensing fan
- condensing
- 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.)
- Active
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
- 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
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/208—Liquid cooling with phase change
- H05K7/20827—Liquid cooling with phase change within rooms for removing heat from cabinets, e.g. air conditioning devices
-
- 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
- F24F2140/12—Heat-exchange fluid pressure
-
- 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
- F24F2140/20—Heat-exchange fluid temperature
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a control method for improving the operation reliability of a condensing fan of an air conditioner and the air conditioner, wherein the method comprises the following steps: when a high-pressure sensor of the outdoor unit fails, transmitting the high-pressure read by the indoor high-pressure sensor to the outdoor unit, and correcting the high-pressure value of the indoor unit by the outdoor unit to be used as the actual high-pressure value of the outdoor unit; when the high-pressure sensor of the outer machine fails and the communication between the inner machine and the outer machine of the air conditioner is abnormal or the high-pressure sensor of the inner machine fails, the condensation fan is controlled by the condensation temperature of the outer machine, and the linear condensation temperature adjustment is synchronously executed; when the high-pressure sensor of the outer machine fails, the communication of the inner machine and the outer machine of the air conditioner is abnormal or the high-pressure sensor of the inner machine fails, if the condensation temperature sensor of the outer machine fails at the same time, the air conditioner adjusts the rotating speed of the condensation fan according to the real-time running frequency of the compressor. The invention improves the redundancy of the air conditioning system and wins time for operation and maintenance personnel to go to the site for maintenance.
Description
Technical Field
The invention relates to the technical field of air conditioner control, in particular to a control method for improving the operation reliability of an air conditioner condensing fan and an air conditioner.
Background
With the rapid development of the popularization of data centers, the design of stability and reliability of air conditioning systems becomes more and more important. The design of the existing machine room air conditioner product in the field of data centers aims at an outdoor condensing fan, and a pressure sensor and PWM chopping speed regulation or mechanical pressure switch starting and stopping control is usually adopted. However, when a pressure sensor or a mechanical pressure switch of an air conditioner external fan fails and communication between an air conditioner internal unit and an air conditioner external unit is interrupted, the condensing fan cannot run or run at full speed, the high-pressure protection of a compressor of the air conditioning system or the low-pressure shutdown of the system is easily triggered under the condition of high temperature or low temperature of an outdoor environment, the air conditioning system cannot run normally in a refrigerating mode, and the stability of a temperature and humidity field of a data center machine room is adversely affected. Therefore, the control method of the air conditioner condensing fan commonly used in the industry at present has certain defects and shortcomings.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
The invention mainly aims to provide a control method for improving the operation reliability of an air conditioner condensing fan and an air conditioner, and aims to solve the problem that the control of the air conditioner condensing fan in the prior art is unstable.
In order to achieve the above object, the present invention provides a control method for improving the operation reliability of an air conditioner condensing fan, wherein the control method for improving the operation reliability of the air conditioner condensing fan comprises the following steps:
when a high-pressure sensor of the outdoor unit fails, transmitting the high-pressure read by the indoor high-pressure sensor to the outdoor unit, and correcting the high-pressure value of the indoor unit by the outdoor unit to be used as the actual high-pressure value of the outdoor unit;
when the high-pressure sensor of the outer machine fails and the communication between the inner machine and the outer machine of the air conditioner is abnormal or the high-pressure sensor of the inner machine fails, the condensation fan is controlled by the condensation temperature of the outer machine, and the linear condensation temperature adjustment is synchronously executed;
when the high-pressure sensor of the outer machine fails, the communication of the inner machine and the outer machine of the air conditioner is abnormal or the high-pressure sensor of the inner machine fails, if the condensation temperature sensor of the outer machine fails at the same time, the air conditioner adjusts the rotating speed of the condensation fan according to the real-time running frequency of the compressor.
Optionally, the control method for improving operation reliability of the condensing fan of the air conditioner includes:
the high-pressure fan speed regulator comprises a high-pressure sensor, a main control unit, a first fan speed regulator, a second fan speed regulator, a first condensing fan and a second condensing fan; the high-pressure sensor is connected with the main control unit, the main control unit is respectively connected with the first fan speed regulator and the second fan speed regulator, the first fan speed regulator is connected with the first condensation fan, and the second fan speed regulator is connected with the second condensation fan.
Optionally, in the control method for improving the operation reliability of the condensing fan of the air conditioner, the high-pressure sensor converts the high-pressure acquired in real time into a voltage signal and uploads the voltage signal to the main control unit;
the main control unit converts the voltage signal into a corresponding rotating speed of a condensing fan and sends a real-time rotating speed control signal of the condensing fan to the first fan speed regulator and the second fan speed regulator;
the first fan speed regulator and the second fan speed regulator control the rotating speed of the first condensing fan and the second condensing fan according to the rotating speed control signal.
Optionally, the control method for improving the operation reliability of the condensing fan of the air conditioner further includes:
when a port of the main control unit for collecting and sending signals of the rotating speed of the condensing fan fails, the main control unit switches the collected signals of the high-pressure sensor to control ports of the first fan speed regulator and the second fan speed regulator through a repeater;
the first fan speed regulator and the second fan speed regulator regulate the rotating speed of the first condensing fan and the second condensing fan through self-contained control functions.
Optionally, the control method for improving the operation reliability of the condensing fan of the air conditioner further includes:
when the high-pressure sensor of the outer machine breaks down, the high-pressure value is read through the high-pressure sensor of the inner machine and transmitted to the main control unit of the outer machine in an RS485 communication mode, and the main control unit executes real-time adjustment of the rotating speed of the condensing fan.
Optionally, the control method for improving the operation reliability of the condensing fan of the air conditioner, wherein when a high-pressure sensor of the outer unit fails, the high-pressure read by the indoor high-pressure sensor is transmitted to the outer unit, and the outer unit corrects a high-pressure value of the inner unit and uses the corrected high-pressure value as an actual high-pressure value of the outer unit, specifically includes:
acquiring the outdoor high-pressure side pressure and the indoor high-pressure side pressure of an air conditioning system, calculating the difference value between the outdoor high-pressure side pressure and the indoor high-pressure side pressure, and recording and storing the difference value in real time;
and when the high-pressure sensor of the outer machine breaks down, the outer machine corrects the indoor high-pressure side pressure of the inner machine according to the difference value and uses the corrected indoor high-pressure side pressure as the actual high-pressure value of the outer machine so as to adjust the real-time running rotating speed of the condensing fan.
Optionally, the control method for improving operation reliability of the condensing fan of the air conditioner, wherein when the high-pressure sensor of the external unit fails and the communication between the internal unit and the external unit of the air conditioner is abnormal or the high-pressure sensor of the internal unit fails, the condensing fan is controlled by the condensing temperature of the external unit, and the linear condensing temperature adjustment is synchronously performed, specifically including:
when the high-pressure sensor of the outer unit fails and the communication between the inner unit and the outer unit of the air conditioner is abnormal or the high-pressure sensor of the inner unit fails, the main control unit of the outer unit acquires the condensation temperature read by a condensation temperature sensor arranged on a condenser of the outer unit;
and the outer machine linearly adjusts the rotating speed of the condensing fan according to the condensing temperature, the upper limit value set by the rotating speed of the condensing fan, the lower limit value set by the rotating speed of the condensing fan, the lowest value of the condensing temperature corresponding to the starting of the condensing fan and the highest value of the condensing temperature corresponding to the starting of the condensing fan.
Optionally, the control method for improving operation reliability of the condensing fan of the air conditioner, where the high-voltage sensor of the external unit fails, the communication between the internal unit and the external unit of the air conditioner is abnormal, or the high-voltage sensor of the internal unit fails, and if the condensation temperature sensor of the external unit fails at the same time, the air conditioner adjusts the rotation speed of the condensing fan according to the real-time operation frequency of the compressor, specifically including:
when a high-pressure sensor of the outer machine fails, communication of the inner machine and the outer machine of the air conditioner is abnormal or the high-pressure sensor of the inner machine fails, if the condensation temperature sensor of the outer machine fails at the same time, the main control unit of the outer machine acquires the set minimum rotating speed of the condensation fan, the real-time running frequency of the compressor and the set lower limit frequency of the compressor;
and calculating according to the set minimum rotating speed of the condensing fan, the real-time running frequency of the compressor and the set lower limit of the compressor frequency to obtain the real-time rotating speed of the condensing fan, so as to adjust the rotating speed of the condensing fan according to the real-time running frequency of the compressor output by the compressor variable frequency driver.
Further, to achieve the above object, the present invention also provides an air conditioner, wherein the air conditioner includes: the control program for improving the operation reliability of the air conditioner condensing fan is stored in the memory and can be operated on the processor, and when being executed by the processor, the control program for improving the operation reliability of the air conditioner condensing fan realizes the steps of the control method for improving the operation reliability of the air conditioner condensing fan.
In addition, in order to achieve the above object, the present invention further provides a storage medium, wherein the storage medium stores a control program for improving the operation reliability of the air conditioner condensing fan, and the control program for improving the operation reliability of the air conditioner condensing fan is executed by a processor to implement the steps of the control method for improving the operation reliability of the air conditioner condensing fan.
In the invention, when the high-pressure sensor of the outdoor unit fails, the high-pressure read by the indoor high-pressure sensor is transmitted to the outdoor unit, and the outdoor unit corrects the high-pressure value of the indoor unit and uses the corrected high-pressure value as the actual high-pressure value of the outdoor unit; when the high-pressure sensor of the outer machine fails and the communication between the inner machine and the outer machine of the air conditioner is abnormal or the high-pressure sensor of the inner machine fails, the condensation fan is controlled by the condensation temperature of the outer machine, and the linear condensation temperature adjustment is synchronously executed; when the high-pressure sensor of the outer machine fails, the communication of the inner machine and the outer machine of the air conditioner is abnormal or the high-pressure sensor of the inner machine fails, if the condensation temperature sensor of the outer machine fails at the same time, the air conditioner adjusts the rotating speed of the condensation fan according to the real-time running frequency of the compressor. The invention can control the external machine to ensure the normal refrigeration operation of the air conditioning system, continuously provide the cold output, maintain the environmental temperature of the data center machine room, improve the redundancy of the air conditioning system and win the time for operation and maintenance personnel to go to the site for maintenance.
Drawings
FIG. 1 is a flow chart of a control method for improving the operational reliability of a condensing fan of an air conditioner according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of the structure of the external unit and the connection between the external unit and the internal unit in the preferred embodiment of the control method for improving the operation reliability of the condensing fan of the air conditioner;
FIG. 3 is a flowchart of step S10 of the control method for improving the operation reliability of the condensing fan of the air conditioner according to the present invention;
FIG. 4 is a flowchart of step S20 of the control method for improving the operation reliability of the condensing fan of the air conditioner according to the present invention;
FIG. 5 is a schematic diagram of linearly controlling the rotation speed according to the condensing temperature in the preferred embodiment of the control method for improving the operation reliability of the condensing fan of the air conditioner according to the present invention;
FIG. 6 is a flowchart of step S30 in the preferred embodiment of the control method for improving the reliability of the operation of the condensing fan of the air conditioner;
FIG. 7 is a schematic diagram illustrating a low-voltage down-conversion control in a preferred embodiment of the control method for improving the operational reliability of the condensing fan of the air conditioner according to the present invention;
FIG. 8 is a schematic diagram illustrating a high-voltage down-conversion control in a preferred embodiment of the control method for improving the operational reliability of the condensing fan of the air conditioner according to the present invention;
FIG. 9 is a schematic diagram illustrating a control flow of a condensing fan according to a preferred embodiment of the control method for improving the operational reliability of the condensing fan of the air conditioner;
fig. 10 is a schematic view of an operating environment of an air conditioner according to a preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the control method for improving the operation reliability of the condensing fan of the air conditioner according to the preferred embodiment of the present invention includes the following steps:
and step S10, when the high-pressure sensor of the outdoor unit fails, transmitting the high-pressure read by the indoor high-pressure sensor to the outdoor unit, and correcting the high-pressure value of the indoor unit by the outdoor unit to be used as the actual high-pressure value of the outdoor unit.
Specifically, as shown in fig. 2, the outer unit includes: a high pressure sensor (not shown in fig. 2), a main control unit (i.e., the outer machine control unit in fig. 2), a first fan governor (i.e., the # 1 fan governor in fig. 2), a second fan governor (i.e., the # 2 fan governor in fig. 2), a first condensing fan (i.e., the # 1 condensing fan in fig. 2), and a second condensing fan (i.e., the # 2 condensing fan in fig. 2); the high-pressure sensor is connected with the main control unit, the main control unit is respectively connected with the first fan speed regulator and the second fan speed regulator, the first fan speed regulator is connected with the first condensation fan, and the second fan speed regulator is connected with the second condensation fan. In addition, the external machine control unit is connected with the internal machine control unit in an RS485 mode.
The high-voltage sensor converts the high-voltage pressure acquired in real time into a voltage signal and uploads the voltage signal to the main control unit; the main control unit converts the voltage signal into a corresponding rotating speed of a condensing fan and sends a real-time rotating speed control signal of the condensing fan to the first fan speed regulator and the second fan speed regulator; the first fan speed regulator and the second fan speed regulator control the rotating speed of the first condensing fan and the second condensing fan according to the rotating speed control signal.
That is, each air conditioner outdoor unit (i.e., the outdoor unit) is provided with 1 main control unit, and a heat dissipation system of each air conditioner outdoor unit is composed of 1-2 condensing fans; each condensing fan is independently provided with 1 fan speed regulator, and each fan speed regulator controls the corresponding condensing fan. The main control unit collects and reads the high pressure of the air conditioning system through a high pressure sensor, the pressure collection ranges corresponding to different refrigerants are different, for example, R410A refrigerant has the corresponding upper limit of the high pressure of 45bar and the corresponding voltage signal of 4.5V; real-time pressure acquired by the high-voltage sensor is converted into a voltage signal and uploaded to the main control unit, the voltage signal is converted into a corresponding rotating speed of the condensing fan through control logic built in the main control unit, then the real-time rotating speed control signal of the condensing fan is sent to the fan speed regulator, and different rotating speeds of the condensing fan are operated through the fan speed regulator. Because the fan speed regulator does not take communication interface itself, consequently through this kind of mode, main control unit can receive and upload the host computer with the real-time rotational speed of off-premises station condensation fan, realizes that the operating parameter of condensation fan is visual.
Further, as shown in fig. 2, when a port of the main control unit, which collects and issues signals of the rotational speed of the condensing fan, fails, the main control unit switches the collected signals of the high-pressure sensor to control ports of the first fan speed regulator and the second fan speed regulator through a relay; the first fan speed regulator and the second fan speed regulator regulate the rotating speed of the first condensing fan and the second condensing fan through self-contained control functions. When the port of main control unit's condensation fan rotational speed collection and issue signal broke down promptly, main control unit will be unable to gather high pressure sensor's real-time voltage signal value, will switch over the control port of fan speed regulator itself through the repeater with high pressure sensor's collection signal this moment, realizes the real-time rotational speed regulation of condensation fan by the control function of fan speed regulator self-bring.
Fig. 3 is a flowchart of step S10 in the control method for improving the operation reliability of the condensing fan of the air conditioner according to the present invention.
As shown in fig. 3, the step S10 includes:
s11, acquiring the outdoor high-pressure side pressure and the indoor high-pressure side pressure of the air conditioning system, calculating the difference between the outdoor high-pressure side pressure and the indoor high-pressure side pressure, and recording and storing the difference in real time;
and S12, when the high-pressure sensor of the outer machine breaks down, the outer machine corrects the indoor high-pressure side pressure of the inner machine according to the difference value and uses the corrected indoor high-pressure side pressure as the actual high-pressure value of the outer machine so as to adjust the real-time running rotating speed of the condensing fan.
Specifically, when a high-pressure sensor of an air conditioner outdoor unit (namely, an outdoor unit) breaks down, a high-pressure value read by the high-pressure sensor of the air conditioner indoor unit (namely, an indoor unit) is transmitted to an outdoor unit main control unit in an RS485 communication mode, and the rotating speed of a condensing fan is adjusted in real time; considering that a certain pressure drop exists in a connecting pipeline between an indoor unit and an outdoor unit of an air conditioning system, a main controller of an outdoor unit of the air conditioning system collects and records an indoor unit high-pressure Pin collected by an indoor unit high-pressure sensor and an outdoor unit high-pressure Pout collected by an outdoor unit high-pressure sensor in real time, the pressure difference between the two ends of the indoor unit and the two ends of the outdoor unit is delta P (Pout-Pin), the value is stored in the main controller of the outdoor unit in real time, when the outdoor unit fails in high-pressure sensing, the main controller of the outdoor unit corrects the indoor unit high-pressure Pin read through communication, namely the high-pressure value used for regulating the speed of an outdoor unit condensing fan is Pout (Pin + delta P), the delta P difference is the last stored value before the failure of the outdoor unit high-pressure sensing, and the real-time operation rotating speed of the condensing fan can be more consistent with the actual operation condition by correcting the high-pressure.
And step S20, when the high-pressure sensor of the outer machine fails and the communication between the inner machine and the outer machine of the air conditioner is abnormal or the high-pressure sensor of the inner machine fails, controlling the condensing fan through the condensation temperature of the outer machine, and synchronously executing linear condensation temperature adjustment.
Fig. 4 is a flowchart of step S20 in the control method for improving the operation reliability of the condensing fan of the air conditioner according to the present invention.
As shown in fig. 4, the step S20 includes:
s21, when the high-voltage sensor of the outer machine fails and the communication between the inner machine and the outer machine of the air conditioner is abnormal or the high-voltage sensor of the inner machine fails, the main control unit of the outer machine acquires the condensation temperature read by the condensation temperature sensor arranged on the condenser of the outer machine;
and S22, the outer unit linearly adjusts the rotating speed of the condensing fan according to the condensing temperature, the upper limit value set by the rotating speed of the condensing fan, the lower limit value set by the rotating speed of the condensing fan, the lowest value of the condensing temperature corresponding to the start of the condensing fan and the highest value of the condensing temperature corresponding to the start of the condensing fan.
Specifically, when the communication between the internal and external machines is abnormal or the internal high-pressure sensor fails, the main control unit of the external machine acquires the condensation temperature read by the condensation temperature sensor installed on the condenser of the external machine, and any one of the condensation pressure values Pa corresponds to one of the condensation temperatures Ta (the installation position of the condensation temperature sensor on the condenser is a measurement point closest to the condensation temperature corresponding to the condensation pressure under the rated working condition).
For example, for R410 refrigerant, when the condensing fan is started at the minimum rotation speed, the corresponding condensing temperature is set to 35 ℃ (corresponding to about 21bar of condensing pressure); when the condensing fan runs at full speed, the corresponding condensing temperature is set to be 45 ℃ (corresponding to about 21bar of condensing pressure), and the linear adjustment of the condensing fan can be realized through the condensing temperature, so that the normal running of the air conditioning system is ensured. As shown in fig. 5, the condensing temperature value To detected by the condensing temperature sensor of the outdoor unit (the rotating speed of the condensing fan corresponding To is Fo), the upper limit Fmax and the lower limit Fmin set according To the rotating speed of the condensing fan, and the lowest value Tmin and the highest value Tmax of the condensing temperature corresponding To the start of the condensing fan are linearly adjusted, and the linear adjustment relation is as follows:
the calculation by a difference method can obtain:
and S30, when the high-pressure sensor of the outer unit fails, the communication of the inner unit and the outer unit of the air conditioner is abnormal or the high-pressure sensor of the inner unit fails, if the condensation temperature sensor of the outer unit fails at the same time, the air conditioner adjusts the rotating speed of the condensation fan according to the real-time running frequency of the compressor.
Fig. 6 is a flowchart of step S30 in the control method for improving the operation reliability of the condensing fan of the air conditioner according to the present invention.
As shown in fig. 6, the step S30 includes:
s31, when the high-pressure sensor of the outer unit fails, the communication of the inner unit and the outer unit of the air conditioner is abnormal or the high-pressure sensor of the inner unit fails, if the condensation temperature sensor of the outer unit fails at the same time, the main control unit of the outer unit acquires the set minimum rotating speed of the condensation fan, the real-time running frequency of the compressor and the set lower limit frequency of the compressor;
and S32, calculating according to the set minimum rotating speed of the condensing fan, the real-time running frequency of the compressor and the set lower limit of the frequency of the compressor to obtain the real-time rotating speed of the condensing fan, and adjusting the rotating speed of the condensing fan according to the real-time running frequency of the compressor output by the variable-frequency driver of the compressor.
Specifically, when the condensation temperature sensor fails, the outer unit main control unit executes speed regulation control of the condensation fan according to the real-time running frequency of the compressor output by the compressor variable-frequency driver. The specific control calculation is as follows: the real-time rotating speed of the condensing fan is equal to the set minimum rotating speed of the condensing fan, the real-time running frequency of the compressor and the set lower frequency limit of the compressor, and the condensing fan corresponds to the upper rotating speed limit and the lower rotating speed limit.
Further, considering that there is no correlation between the load size of the machine room and the outdoor ambient temperature, to ensure that the load on the machine room is large, meanwhile, under the condition of ultralow temperature in the outdoor environment, the high pressure of the air conditioning system is reduced too fast due to the over-fast rotating speed of the condensing fan, the low pressure is also reduced synchronously, and the system has the possible adverse phenomena of low-pressure shutdown and the like, as shown in figure 7, the invention provides an outdoor unit low-pressure frequency reduction mode, that is, under such an environment, when the system is reduced to a low-pressure frequency-reducing pressure (the low-pressure frequency-reducing pressure is equal to the low-pressure shutdown pressure +2bar), the main control unit of the external unit executes a compressor frequency reduction strategy (default 1Hz/2s), and at this time, the rotating speed of the corresponding condensing fan is calculated according to the relation between the condensing fan and the frequency speed regulation and is also reduced synchronously, after the rotating speed of the condensing fan is reduced, at the moment, the influence of high pressure on low pressure caused by overhigh rotating speed of the condensing fan of the system is reduced; when the low-pressure returns to the low-pressure frequency-reducing stop pressure (the low-pressure frequency-reducing stop pressure is equal to the low-pressure shutdown pressure +3bar), the stop frequency is reduced at the moment, and the compressor keeps running at the frequency; when the low-pressure of the system is recovered to the low-pressure frequency-reducing resetting pressure (the low-pressure frequency-reducing resetting pressure is equal to low-pressure shutdown pressure +5bar), the compressor automatically calculates whether the real-time operation frequency of the compressor rises or not through the outer unit main control unit according to the refrigeration requirement of the machine room.
Meanwhile, in order to ensure that the high-pressure of the air conditioning system is reduced too fast due to the fact that the rotating speed of a condensing fan is too fast and the low pressure is also reduced synchronously in an outdoor ultralow-temperature environment and the low-pressure shutdown and other adverse phenomena possibly occurring in the system are caused, the low-pressure frequency reduction strategy of the outdoor unit is provided, and the low-pressure of the system is ensured to be at a reasonable value.
Further, when any 1 condensing fan or fan speed regulator of the air conditioner outdoor unit fails, the corresponding condensing fan cannot operate, and the remaining 1 condensing fan keeps normal operation; or poor heat dissipation condition of outdoor unit installation environment and dirty and blocked condenser, in order to ensure that under the condition, when the outdoor environment temperature is high, the air conditioning system can not generate high-pressure protection shutdown, which causes the bad phenomenon that the air conditioning system can not continue normal refrigeration operation, as shown in fig. 8, the present invention provides an external unit high-voltage down-conversion strategy, so that the air conditioning system will not generate the adverse conditions such as high-voltage protection shutdown, i.e. when the high pressure of the system is higher than the high pressure frequency reducing pressure (high pressure frequency reducing pressure-3 bar), the outer machine main control unit will execute the compressor frequency reducing strategy (default 1Hz/2s), when the high-pressure is reduced to a high-pressure frequency-reducing stopping pressure (the high-pressure frequency-reducing stopping pressure is equal to the high-pressure shutdown pressure of-4 bar), the compressor reduces the stopping frequency at the moment, and the compressor keeps running at the frequency; when the high-pressure of the system is recovered to the high-pressure frequency-reducing resetting pressure (the high-pressure frequency-reducing resetting pressure is equal to high-pressure shutdown pressure of-6 bar), at the moment, the compressor automatically calculates whether the real-time operation frequency of the compressor rises or falls or not through the outer unit main control unit according to the refrigeration requirement of the machine room.
In the embodiment of the invention, the sequence of the following three operation adjustment substitution methods of the condensing fan is determined based on the characteristics of comprehensive control indexes (adjustment precision, environmental adaptability and the like). As shown in fig. 9, when the high-pressure of the outdoor unit fails, the first control scheme of the present invention uses the high-pressure of the indoor unit as a substitute for pressure drop correction, and the method is most suitable for the high-pressure regulation method of the original outdoor unit, and has the highest control precision; when the internal machine has a high-pressure-sensitive fault or the communication between the internal machine and the external machine is abnormal, the second control scheme of the invention adopts the condensation temperature Ta of the external machine as a substitute regulation mode of a condensation fan, and the mode regulates the pressure, the temperature signal receiving has lag (mainly the temperature needs to be transmitted by a cold medium, the pressure change is faster than the temperature change transmission), the regulation precision does not depend on the pressure regulation, and therefore, the second control scheme is adopted; when the condensation temperature of the outdoor unit is also failed, the third control scheme of the invention adopts the real-time running frequency of the compressor to adjust and control the condensation fan, and the adaptability of the scheme to the environment is not superior to that of the first/second control scheme, so that the reliable running of the condensation fan of the third control scheme all the year round is realized by combining the control strategies of low-pressure frequency reduction, high-pressure frequency reduction and the like of the scheme.
Specifically, the first control scheme: for an air conditioning system, comparing an outdoor high-pressure side pressure Pout with an indoor high-pressure side pressure Pin, and removing a pipeline pressure drop delta P, wherein the difference between the values of the two is not large, namely the delta P is Pout-Pin, the pressure drop difference delta P is recorded and stored by a controller in real time, and when an outdoor unit high-pressure sensing fault occurs, the indoor unit controller reads a group of last recorded pressure drop values as a correction value of the delta P; therefore, when the high-pressure sensor of the outer machine fails, the high-pressure read by the indoor high-pressure sensor is transmitted to the outer machine in an inner-outer machine communication mode, and the outer machine continuously executes a pressure linear regulation strategy after executing correction calculation on the high-pressure numerical value of the inner machine.
The second control scheme is as follows: for an air conditioning system, any one high-pressure value Pa corresponds to a unique condensation temperature value Ta (the installation position of the condensation temperature sensor on the condenser is a measuring point which is closest to the condensation temperature corresponding to the condensation pressure under a rated working condition), and the condensation temperature value Pa can be used as a real-time rotating speed adjusting signal of the condensation fan by acquiring the condensation temperature Ta in real time. When the communication between the internal machine and the external machine is abnormal or the pressure sensor of the internal machine is also in fault, the condensing fan is switched to control the condensing temperature of the external machine, and the linear condensing temperature is synchronously adjusted.
A third control scheme: when the high-pressure of the outer machine fails, the communication between the inner machine and the outer machine is abnormal or the high-pressure sensor of the inner machine fails, and the condensation temperature sensor of the outer machine also fails synchronously, the control is switched to the real-time operation frequency of the compressor, and meanwhile, the real-time operation frequency of the compressor is higher under the condition that the outdoor environment is ultralow, so that the high-pressure of the air conditioning system is reduced too fast due to the fact that the real-time operation frequency of the compressor is higher, the low-pressure is reduced synchronously, and the possible low-pressure shutdown and other adverse phenomena of the system are avoided. When any 1 condensing fan or fan speed regulator of the air conditioner outdoor unit fails, the corresponding condensing fan cannot operate, and the rest 1 condensing fan keeps normal operation; or when the outdoor unit is installed in poor environment and the condenser is dirty and blocked, the high-pressure protection shutdown of the air conditioning system can not be generated due to the high outdoor environment temperature.
The control method of the air conditioner condensing fan can effectively improve the usability of an air conditioning system, and is particularly suitable for unattended occasions of edge data centers and communication machine rooms.
The invention mainly provides a reasonable and highly reliable control method and a control scheme aiming at the control of a condensing fan of an air conditioning system of a data center, and the scheme of the invention can realize that when the condensing fan of the air conditioning has a fault of a high-pressure sensor or abnormal communication of an internal machine and an external machine of the air conditioning and any one of the condensing fans has a fault, an external machine can be controlled to ensure normal refrigeration operation of the air conditioning system no matter the outdoor environment is in a high-temperature or low-temperature condition, cold output is continuously provided, the ambient temperature of a machine room of the data center is maintained, the redundancy of the air conditioning system is improved, and time is won for operation and maintenance personnel to carry out on-site maintenance.
Further, as shown in fig. 10, based on the above control method for improving the operation reliability of the condensing fan of the air conditioner, the present invention also provides an air conditioner, which includes a processor 10, a memory 20 and a display 30. Fig. 10 shows only some of the components of the air conditioner, but it is to be understood that not all of the shown components are required to be implemented, and that more or fewer components may be implemented instead.
The storage 20 may in some embodiments be an internal storage unit of the air conditioner, such as a hard disk or a memory of the air conditioner. The memory 20 may also be an external storage device of the air conditioner in other embodiments, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, provided on the air conditioner. Further, the memory 20 may also include both an internal storage unit and an external storage device of the air conditioner. The memory 20 is used for storing application software installed in the air conditioner and various types of data, such as program codes of the installed air conditioner. The memory 20 may also be used to temporarily store data that has been output or is to be output. In an embodiment, the memory 20 stores a control program 40 for improving the operational reliability of the air conditioner condensing fan, and the control program 40 for improving the operational reliability of the air conditioner condensing fan can be executed by the processor 10, so as to implement the control method for improving the operational reliability of the air conditioner condensing fan in the present application.
The processor 10 may be a Central Processing Unit (CPU), a microprocessor or other data Processing chip in some embodiments, and is configured to run program codes stored in the memory 20 or process data, for example, execute the control method for improving the operation reliability of the air conditioner condensing fan.
The display 30 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch panel, or the like in some embodiments. The display 30 is used to display information at the air conditioner and to display a visual user interface. The components 10-30 of the air conditioner communicate with each other via a system bus.
In one embodiment, when the processor 10 executes the control program 40 in the memory 20 for improving the operational reliability of the air conditioner condensing fan, the following steps are implemented:
when a high-pressure sensor of the outdoor unit fails, transmitting the high-pressure read by the indoor high-pressure sensor to the outdoor unit, and correcting the high-pressure value of the indoor unit by the outdoor unit to be used as the actual high-pressure value of the outdoor unit;
when the high-pressure sensor of the outer machine fails and the communication between the inner machine and the outer machine of the air conditioner is abnormal or the high-pressure sensor of the inner machine fails, the condensation fan is controlled by the condensation temperature of the outer machine, and the linear condensation temperature adjustment is synchronously executed;
when the high-pressure sensor of the outer machine fails, the communication of the inner machine and the outer machine of the air conditioner is abnormal or the high-pressure sensor of the inner machine fails, if the condensation temperature sensor of the outer machine fails at the same time, the air conditioner adjusts the rotating speed of the condensation fan according to the real-time running frequency of the compressor.
Wherein, outer machine includes:
the high-pressure fan speed regulator comprises a high-pressure sensor, a main control unit, a first fan speed regulator, a second fan speed regulator, a first condensing fan and a second condensing fan; the high-pressure sensor is connected with the main control unit, the main control unit is respectively connected with the first fan speed regulator and the second fan speed regulator, the first fan speed regulator is connected with the first condensation fan, and the second fan speed regulator is connected with the second condensation fan.
The high-voltage sensor converts the high-voltage pressure acquired in real time into a voltage signal and uploads the voltage signal to the main control unit;
the main control unit converts the voltage signal into a corresponding rotating speed of a condensing fan and sends a real-time rotating speed control signal of the condensing fan to the first fan speed regulator and the second fan speed regulator;
the first fan speed regulator and the second fan speed regulator control the rotating speed of the first condensing fan and the second condensing fan according to the rotating speed control signal.
When a port of the main control unit for collecting and sending signals of the rotating speed of the condensing fan fails, the main control unit switches the collected signals of the high-pressure sensor to control ports of the first fan speed regulator and the second fan speed regulator through a repeater;
the first fan speed regulator and the second fan speed regulator regulate the rotating speed of the first condensing fan and the second condensing fan through self-contained control functions.
When the high-pressure sensor of the outer machine breaks down, the high-pressure value is read through the high-pressure sensor of the inner machine and transmitted to the main control unit of the outer machine in an RS485 communication mode, and the main control unit executes real-time adjustment of the rotating speed of the condensing fan.
When the high pressure sensor trouble of outer machine, reach outer machine with the high-pressure that indoor high pressure sensor read, outer machine revises the back as outer quick-witted actual high pressure value with interior quick-witted high pressure numerical value and uses, specifically includes:
acquiring the outdoor high-pressure side pressure and the indoor high-pressure side pressure of an air conditioning system, calculating the difference value between the outdoor high-pressure side pressure and the indoor high-pressure side pressure, and recording and storing the difference value in real time;
and when the high-pressure sensor of the outer machine breaks down, the outer machine corrects the indoor high-pressure side pressure of the inner machine according to the difference value and uses the corrected indoor high-pressure side pressure as the actual high-pressure value of the outer machine so as to adjust the real-time running rotating speed of the condensing fan.
When the high pressure sensor trouble of outer machine the interior outer quick-witted communication of air conditioner appears unusually or the high pressure sensor of interior machine breaks down simultaneously, then through outer quick-witted condensation temperature control condensation fan, the linear condensation temperature of synchronous execution adjusts, specifically includes:
when the high-pressure sensor of the outer unit fails and the communication between the inner unit and the outer unit of the air conditioner is abnormal or the high-pressure sensor of the inner unit fails, the main control unit of the outer unit acquires the condensation temperature read by a condensation temperature sensor arranged on a condenser of the outer unit;
and the outer machine linearly adjusts the rotating speed of the condensing fan according to the condensing temperature, the upper limit value set by the rotating speed of the condensing fan, the lower limit value set by the rotating speed of the condensing fan, the lowest value of the condensing temperature corresponding to the starting of the condensing fan and the highest value of the condensing temperature corresponding to the starting of the condensing fan.
When the high pressure sensor trouble of outer machine, and the high pressure sensor of the interior outer quick-witted communication anomaly of air conditioner or interior machine breaks down, if outer quick-witted condensation temperature sensor trouble simultaneously this moment, the air conditioner will adjust the rotational speed of condensation fan according to the real-time operating frequency of compressor, specifically include:
when a high-pressure sensor of the outer machine fails, communication of the inner machine and the outer machine of the air conditioner is abnormal or the high-pressure sensor of the inner machine fails, if the condensation temperature sensor of the outer machine fails at the same time, the main control unit of the outer machine acquires the set minimum rotating speed of the condensation fan, the real-time running frequency of the compressor and the set lower limit frequency of the compressor;
and calculating according to the set minimum rotating speed of the condensing fan, the real-time running frequency of the compressor and the set lower limit of the compressor frequency to obtain the real-time rotating speed of the condensing fan, so as to adjust the rotating speed of the condensing fan according to the real-time running frequency of the compressor output by the compressor variable frequency driver.
The invention also provides a storage medium, wherein the storage medium stores a control program for improving the operation reliability of the air conditioner condensing fan, and the control program for improving the operation reliability of the air conditioner condensing fan realizes the steps of the control method for improving the operation reliability of the air conditioner condensing fan when being executed by a processor.
In summary, the present invention provides a control method for improving operation reliability of a condensing fan of an air conditioner and the air conditioner, wherein the method includes: when a high-pressure sensor of the outdoor unit fails, transmitting the high-pressure read by the indoor high-pressure sensor to the outdoor unit, and correcting the high-pressure value of the indoor unit by the outdoor unit to be used as the actual high-pressure value of the outdoor unit; when the high-pressure sensor of the outer machine fails and the communication between the inner machine and the outer machine of the air conditioner is abnormal or the high-pressure sensor of the inner machine fails, the condensation fan is controlled by the condensation temperature of the outer machine, and the linear condensation temperature adjustment is synchronously executed; when the high-pressure sensor of the outer machine fails, the communication of the inner machine and the outer machine of the air conditioner is abnormal or the high-pressure sensor of the inner machine fails, if the condensation temperature sensor of the outer machine fails at the same time, the air conditioner adjusts the rotating speed of the condensation fan according to the real-time running frequency of the compressor. The invention realizes that when the high-pressure sensor of the air conditioner is in failure or the communication between the indoor unit and the outdoor unit of the air conditioner is abnormal and any one condensing fan is in failure, the outdoor unit can be controlled no matter under the high-temperature or low-temperature condition of the outdoor environment, so that the normal refrigeration operation of the air conditioning system is ensured, the cold output is continuously provided, the environmental temperature of a data center machine room is maintained, the redundancy of the air conditioning system is improved, and the time is won for operation and maintenance personnel to go to the site for maintenance.
Of course, it will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by a computer program instructing relevant hardware (such as a processor, a controller, etc.), and the program may be stored in a computer readable storage medium, and when executed, the program may include the processes of the above method embodiments. The storage medium may be a memory, a magnetic disk, an optical disk, etc.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (8)
1. A control method for improving the operation reliability of an air conditioner condensing fan is characterized by comprising the following steps:
when a high-pressure sensor of the outdoor unit fails, transmitting the high-pressure read by the indoor high-pressure sensor to the outdoor unit, and correcting the high-pressure value of the indoor unit by the outdoor unit to be used as the actual high-pressure value of the outdoor unit;
when the high-pressure sensor of the outer machine fails and the communication between the inner machine and the outer machine of the air conditioner is abnormal or the high-pressure sensor of the inner machine fails, the condensation fan is controlled by the condensation temperature of the outer machine, and the linear condensation temperature adjustment is synchronously executed;
when the high-pressure sensor of the outer machine fails, the communication of the inner machine and the outer machine of the air conditioner is abnormal or the high-pressure sensor of the inner machine fails, if the condensation temperature sensor of the outer machine fails at the same time, the air conditioner adjusts the rotating speed of the condensation fan according to the real-time running frequency of the compressor;
the outer machine includes:
the high-pressure fan speed regulator comprises a high-pressure sensor, a main control unit, a first fan speed regulator, a second fan speed regulator, a first condensing fan and a second condensing fan; the high-pressure sensor is connected with the main control unit, the main control unit is respectively connected with the first fan speed regulator and the second fan speed regulator, the first fan speed regulator is connected with the first condensing fan, and the second fan speed regulator is connected with the second condensing fan;
when the high pressure sensor trouble of outer machine the interior outer quick-witted communication of air conditioner appears unusually or the high pressure sensor of interior machine breaks down simultaneously, then through outer quick-witted condensation temperature control condensation fan, the linear condensation temperature of synchronous execution adjusts, specifically includes:
when the high-pressure sensor of the outer unit fails and the communication between the inner unit and the outer unit of the air conditioner is abnormal or the high-pressure sensor of the inner unit fails, the main control unit of the outer unit acquires the condensation temperature read by a condensation temperature sensor arranged on a condenser of the outer unit;
and the outer machine linearly adjusts the rotating speed of the condensing fan according to the condensing temperature, the upper limit value set by the rotating speed of the condensing fan, the lower limit value set by the rotating speed of the condensing fan, the lowest value of the condensing temperature corresponding to the starting of the condensing fan and the highest value of the condensing temperature corresponding to the starting of the condensing fan.
2. The control method for improving the operation reliability of the condensing fan of the air conditioner according to claim 1, wherein the high-pressure sensor converts the high-pressure collected in real time into a voltage signal and uploads the voltage signal to the main control unit;
the main control unit converts the voltage signal into a corresponding rotating speed of a condensing fan and sends a real-time rotating speed control signal of the condensing fan to the first fan speed regulator and the second fan speed regulator;
the first fan speed regulator and the second fan speed regulator control the rotating speed of the first condensing fan and the second condensing fan according to the rotating speed control signal.
3. The control method for improving the operation reliability of the condensing fan of the air conditioner according to claim 2, wherein the method further comprises the following steps:
when a port of the main control unit for collecting and sending signals of the rotating speed of the condensing fan fails, the main control unit switches the collected signals of the high-pressure sensor to control ports of the first fan speed regulator and the second fan speed regulator through a repeater;
the first fan speed regulator and the second fan speed regulator regulate the rotating speed of the first condensing fan and the second condensing fan through self-contained control functions.
4. The control method for improving the operation reliability of the condensing fan of the air conditioner according to claim 1, wherein the method further comprises the following steps:
when the high-pressure sensor of the outer machine breaks down, the high-pressure value is read through the high-pressure sensor of the inner machine and transmitted to the main control unit of the outer machine in an RS485 communication mode, and the main control unit executes real-time adjustment of the rotating speed of the condensing fan.
5. The control method for improving the operation reliability of the condensing fan of the air conditioner according to claim 1, wherein when the high-pressure sensor of the outdoor unit fails, the high-pressure read by the indoor high-pressure sensor is transmitted to the outdoor unit, and the outdoor unit corrects the high-pressure value of the indoor unit and uses the corrected high-pressure value as the actual high-pressure value of the outdoor unit, specifically comprising:
acquiring the outdoor high-pressure side pressure and the indoor high-pressure side pressure of an air conditioning system, calculating the difference value between the outdoor high-pressure side pressure and the indoor high-pressure side pressure, and recording and storing the difference value in real time;
and when the high-pressure sensor of the outer machine breaks down, the outer machine corrects the indoor high-pressure side pressure of the inner machine according to the difference value and uses the corrected indoor high-pressure side pressure as the actual high-pressure value of the outer machine so as to adjust the real-time running rotating speed of the condensing fan.
6. The control method for improving the operation reliability of the condensing fan of the air conditioner according to claim 1, wherein when the high-voltage sensor of the outdoor unit fails, the communication between the indoor unit and the outdoor unit of the air conditioner is abnormal or the high-voltage sensor of the indoor unit fails, and if the condensation temperature sensor of the outdoor unit fails at the same time, the air conditioner adjusts the rotating speed of the condensing fan according to the real-time operation frequency of the compressor, and specifically comprises:
when a high-pressure sensor of the outer machine fails, communication of the inner machine and the outer machine of the air conditioner is abnormal or the high-pressure sensor of the inner machine fails, if the condensation temperature sensor of the outer machine fails at the same time, the main control unit of the outer machine acquires the set minimum rotating speed of the condensation fan, the real-time running frequency of the compressor and the set lower limit frequency of the compressor;
and calculating according to the set minimum rotating speed of the condensing fan, the real-time running frequency of the compressor and the set lower limit of the compressor frequency to obtain the real-time rotating speed of the condensing fan, so as to adjust the rotating speed of the condensing fan according to the real-time running frequency of the compressor output by the compressor variable frequency driver.
7. An air conditioner, characterized in that the air conditioner comprises: the control program for improving the operation reliability of the air conditioner condensing fan is stored in the memory and can be operated on the processor, and when the control program for improving the operation reliability of the air conditioner condensing fan is executed by the processor, the steps of the control method for improving the operation reliability of the air conditioner condensing fan are realized according to any one of claims 1 to 6.
8. A storage medium, wherein the storage medium stores a control program for improving the operational reliability of a condensing fan of an air conditioner, and the control program for improving the operational reliability of the condensing fan of the air conditioner realizes the steps of the control method for improving the operational reliability of the condensing fan of the air conditioner according to any one of claims 1 to 6 when being executed by a processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010767209.6A CN112050347B (en) | 2020-08-03 | 2020-08-03 | Control method for improving operation reliability of air conditioner condensing fan and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010767209.6A CN112050347B (en) | 2020-08-03 | 2020-08-03 | Control method for improving operation reliability of air conditioner condensing fan and air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112050347A CN112050347A (en) | 2020-12-08 |
| CN112050347B true CN112050347B (en) | 2022-01-28 |
Family
ID=73602053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010767209.6A Active CN112050347B (en) | 2020-08-03 | 2020-08-03 | Control method for improving operation reliability of air conditioner condensing fan and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112050347B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115628530B (en) * | 2022-10-26 | 2024-06-14 | 珠海格力电器股份有限公司 | Fan control method, device and unit |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466304B (en) * | 2010-11-16 | 2014-09-03 | 力博特公司 | Air-conditioning system and control method of condensation fan thereof |
| CN104132431A (en) * | 2014-08-19 | 2014-11-05 | 广东志高暖通设备股份有限公司 | Air cooling air-conditioner system and control method thereof |
| JP2017067301A (en) * | 2015-09-28 | 2017-04-06 | 株式会社富士通ゼネラル | Air conditioning device |
| CN206709316U (en) * | 2017-04-13 | 2017-12-05 | 铨高科技（珠海）股份有限公司 | A kind of condenser fan speed-adjusting and control system |
| CN111271833A (en) * | 2018-12-05 | 2020-06-12 | 维谛技术有限公司 | Air conditioning system, and operation control method and device of air conditioning system |
| CN110785049B (en) * | 2019-05-29 | 2020-09-11 | 湖北兴致天下信息技术有限公司 | Self-adaptive control system for condensation fan of machine room refrigeration double-loop heat pipe air conditioner |
| CN110454908B (en) * | 2019-07-22 | 2021-01-26 | 海信（山东）空调有限公司 | Air conditioning system and control method |
| CN111023418B (en) * | 2019-12-26 | 2021-05-14 | 宁波奥克斯电气股份有限公司 | Pressure sensor abnormity control method and device and air conditioner |
-
2020
- 2020-08-03 CN CN202010767209.6A patent/CN112050347B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112050347A (en) | 2020-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110173854B (en) | Low-temperature heating start control method of air conditioner and air conditioner | |
| US12085301B2 (en) | Outdoor unit, air conditioner, and method for controlling air conditioner | |
| US20150330651A1 (en) | Accommodating cssh for tandem compressor transitions | |
| CN102466304A (en) | Air-conditioning system and control method of condensation fan thereof | |
| CN104764148A (en) | Control method and control device of outdoor fan and air conditioner | |
| CN112050347B (en) | Control method for improving operation reliability of air conditioner condensing fan and air conditioner | |
| US11788753B2 (en) | HVAC system fault prognostics and diagnostics | |
| CN110848898B (en) | Control method for preventing air conditioner load conversion from stopping, computer readable storage medium and air conditioner | |
| WO2021143107A1 (en) | Outdoor unit of air conditioner, and air conditioner | |
| CN114234383A (en) | Air conditioner control method and device | |
| US11639803B2 (en) | System and method for identifying causes of HVAC system faults | |
| US11692726B2 (en) | System and method for distinguishing HVAC system faults | |
| CN111023461A (en) | Detection control method and system of air conditioner, air conditioner and storage medium | |
| CN113446706A (en) | Air conditioner control method and air conditioner | |
| CN206709316U (en) | A kind of condenser fan speed-adjusting and control system | |
| CN114857741A (en) | Air conditioning system with fault diagnosis and emergency starting functions and control method thereof | |
| CN108548352B (en) | Control method of machine room air conditioning system | |
| CN114322201A (en) | Fault self-diagnosis method and system based on cloud server | |
| CN208222776U (en) | A kind of air-conditioner set control system | |
| CN215490040U (en) | Switching circuit of air conditioner host and standby machine and air conditioner | |
| CN111947288B (en) | Control method and control system of machine room air conditioner | |
| CN113091205B (en) | Air conditioner abnormity detection method and device | |
| CN104864550B (en) | Convertible frequency air-conditioner | |
| CN114710941A (en) | Control system of air-cooled heat dissipation system for radar electronic cabinet | |
| CN114061254A (en) | Method and device for self-protection of refrigeration equipment, refrigeration equipment and storage medium |
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 |