CN112393373A - Variable frequency air conditioner control system and control method thereof - Google Patents
Variable frequency air conditioner control system and control method thereof Download PDFInfo
- Publication number
- CN112393373A CN112393373A CN202011144466.0A CN202011144466A CN112393373A CN 112393373 A CN112393373 A CN 112393373A CN 202011144466 A CN202011144466 A CN 202011144466A CN 112393373 A CN112393373 A CN 112393373A
- Authority
- CN
- China
- Prior art keywords
- control unit
- compressor
- air conditioning
- conditioning system
- variable frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- 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
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- 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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
A control system of a variable frequency air conditioner and a control method thereof comprise an indoor unit control unit, an outdoor unit control unit, a remote controller and an air conditioning system, wherein the air conditioning system comprises a variable frequency compressor, a four-way valve, a condenser, an electronic expansion valve and an evaporator which are sequentially connected through a pipeline, the evaporator is connected with the four-way valve through the pipeline, the four-way valve is connected with a liquid storage device through the pipeline, the liquid storage device is connected with the variable frequency compressor through the pipeline, a compressor enthalpy increasing port is arranged between the variable frequency compressor and the evaporator, the indoor unit control unit is in communication connection with the outdoor unit control unit, the remote controller is in communication connection with an indoor unit of. According to the invention, the frequency conversion compressor and the electronic expansion valve are controlled, so that the restarting time is shortened, the refrigerating and heating effects are achieved more quickly, and the user experience is met.
Description
Technical Field
The invention relates to the technical field of air conditioner control, in particular to a variable frequency air conditioner control system and a control method thereof.
Background
Currently, in the inverter air conditioner, because the service life of the compressor is taken into consideration, the time interval for starting or restarting the compressor is usually set to 3-5 minutes, although this arrangement well protects the compressor and prolongs the service life of the compressor and the air conditioning system. However, under some conditions, the user experience is not friendly, which is mainly reflected in that the heating or cooling of the indoor ambient temperature is slow due to the long time interval of the power-on and the rising time of the frequency.
Disclosure of Invention
The invention aims to provide a variable frequency air conditioner control system and a preparation method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a frequency conversion air conditioner control system, including indoor set the control unit, off-premises station the control unit, remote controller and air conditioning system, air conditioning system includes the frequency conversion compressor who connects gradually through the pipeline, the cross valve, a condenser, electronic expansion valve, the evaporimeter is connected with the cross valve through the pipeline again, the cross valve has the reservoir through the tube coupling, the reservoir passes through the pipeline and is connected with frequency conversion compressor, there is the compressor enthalpy-increasing mouth between frequency conversion compressor and evaporimeter, indoor set the control unit is connected with off-premises station the control unit communication, the remote controller is connected with the indoor set communication of air conditioner, off-premises station the control unit and frequency conversion compressor.
A control method of a variable frequency air conditioner control system comprises the following steps:
presetting the line current value of the frequency conversion compressor to I when the air conditioning system is in a standby state through an outdoor unit control unit1The reset time of the electronic expansion valve is TF, and the reset time TF is less than 3 minutes;
when the air conditioning system starts to operate, the outdoor unit control unit detects the line current value I of the variable frequency compressor in real time2The electronic expansion valve is opened according to a preset opening degree;
current value of current at current line I2Greater than line current value of I1Judging that the variable frequency compressor is in a normal running state currently; when the current value I2Line current value of less than or equal to I1And judging that the variable frequency compressor is in a standby state currently.
When the variable frequency compressor is in a standby state, the electronic expansion valve starts to reset, and the electronic expansion valve completes resetting within preset resetting time TF.
After the air conditioning system is switched to be stopped from the running state, the stop time T is less than the reset time TF and receives a starting command sent to the indoor unit control unit by the remote controller, the indoor unit control unit transmits the starting command to the outdoor unit control unit, and the outdoor unit control unit starts the variable frequency compressor after the reset time TF, so that the air conditioning system is started to run.
And when the shutdown time T of the variable frequency compressor is more than or equal to the reset time TF and the starting command of the remote controller is received, the outdoor unit control unit directly starts the variable frequency compressor to start the air conditioning system to operate.
When the air conditioning system is powered off during operation,
if the indoor unit control unit is preset with a power failure memory function, directly starting the opening of the electronic expansion valve and the operating frequency of the variable frequency compressor before power failure;
and if the control unit of the indoor unit of the air conditioner does not have the preset power-down memory function, after receiving a starting-up instruction of the remote controller, starting the air conditioning system according to the running state before the initial power-off.
The invention ensures the reliability of the air conditioning system and shortens the restarting time, so that the refrigerating and heating effects can be achieved more quickly and the user experience can be met.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic diagram of the control connection of the present invention.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
As shown in the attached drawings 1 and 2, the invention provides a variable frequency air conditioner control system, which comprises an indoor unit control unit, an outdoor unit control unit, a remote controller and an air conditioner system, wherein the air conditioner system comprises a variable frequency compressor 1, a four-way valve 2, a condenser 3, an electronic expansion valve 4 and an evaporator 5 which are sequentially connected through pipelines, the evaporator 5 is connected with the four-way valve 2 through a pipeline, the four-way valve 2 is connected with a liquid storage device 7 through a pipeline, the liquid storage device 7 is connected with the variable frequency compressor 1 through a pipeline, a compressor enthalpy increasing port 6 is arranged between the variable frequency compressor 1 and the evaporator 5, the indoor unit control unit is in communication connection with the outdoor unit control unit, the remote controller is in communication connection with an indoor unit of the. And carrying out liquid reflux treatment on the liquid storage device. The refrigeration and heating functions are realized by the flowing change of the refrigerant medium in the evaporator and the condenser.
The remote controller sends corresponding operation commands such as starting up, stopping and the like to the indoor unit control unit, the indoor unit control unit transmits the operation commands to the outdoor unit control unit, and the outdoor unit control unit controls the variable frequency compressor and the electronic expansion valve correspondingly.
A control method of a variable frequency air conditioner control system comprises the following steps:
presetting the line current value of the frequency conversion compressor to I when the air conditioning system is in a standby state through an outdoor unit control unit1The reset time of the electronic expansion valve is TF, the reset time TF is less than 3 minutes.
When the air conditioning system starts to operate, the outdoor unit control unit detects the line current value I of the variable frequency compressor in real time2The electronic expansion valve can directly preset the initial operation opening of the corresponding electronic expansion valve in the outdoor unit control unit according to the opening preset opening.
If the current line current value I of the inverter compressor2Greater than line current value of I1Judging that the variable frequency compressor is in a normal running state currently; if the current value I of the inverter compressor2Line current value of less than or equal to I1And judging that the variable frequency compressor is in a standby state currently.
When the inverter compressor is in a standby state, the electronic expansion valve starts to reset, and the electronic expansion valve is reset within preset reset time TF, namely is closed again.
After the air conditioning system is switched to be stopped from the running state, the stop time T is less than the reset time TF and receives a starting command sent to the indoor unit control unit by the remote controller, the indoor unit control unit transmits the starting command to the outdoor unit control unit, and the outdoor unit control unit starts the variable frequency compressor after the reset time TF, so that the air conditioning system is started to run. For example, the reset time TF is 2 minutes, that is, when the time is 1 minute after the shutdown, the remote controller sends a startup command, and at this time, the outdoor unit control unit controls the inverter compressor to still start operation after the shutdown for 2 minutes.
And when the shutdown time T of the variable frequency compressor is more than or equal to the reset time TF and the starting command of the remote controller is received, the outdoor unit control unit directly starts the variable frequency compressor to start the air conditioning system to operate. If the starting operation is carried out after the TF time is exceeded, the starting is directly carried out. For example, the reset time TF is 2 minutes, and the boot-up command is received after the shutdown is performed for 3 minutes, so that the boot-up is directly performed.
When the air conditioning system is powered off during operation,
if the indoor unit control unit is preset with a power failure memory function, the opening degree of the electronic expansion valve and the operation frequency of the variable frequency compressor before power failure are directly started.
And if the control unit of the indoor unit of the air conditioner does not have the preset power-down memory function, after receiving a starting-up instruction of the remote controller, starting the air conditioning system according to the running state before the initial power-off.
Although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications, equivalents, improvements, and the like can be made in the technical solutions of the foregoing embodiments or in some of the technical features of the foregoing embodiments, but those modifications, equivalents, improvements, and the like are all within the spirit and principle of the present invention.
Claims (6)
1. The utility model provides a frequency conversion air conditioner control system, a serial communication port, including indoor set control unit, off-premises station control unit, remote controller and air conditioning system, air conditioning system includes the frequency conversion compressor who connects gradually through the pipeline, the cross valve, the condenser, electronic expansion valve, the evaporimeter is connected with the cross valve through the pipeline again, the cross valve has the reservoir through the tube coupling, the reservoir passes through the pipeline and is connected with frequency conversion compressor, there is the compressor enthalpy increase mouth between frequency conversion compressor and evaporimeter, indoor set control unit and off-premises station control unit communication connection, the remote controller is connected with the indoor set communication of air conditioner, off-premises station control unit and frequency conversion compressor, electronic expansion valve communication connection.
2. The control method of the inverter air conditioner control system according to claim 1, characterized by comprising the steps of:
presetting the line current value of the frequency conversion compressor to I when the air conditioning system is in a standby state through an outdoor unit control unit1The reset time of the electronic expansion valve is TF, and the reset time TF is less than 3 minutes;
when the air conditioning system starts to operate, the outdoor unit control unit detects the line current value I of the variable frequency compressor in real time2The electronic expansion valve is opened according to a preset opening degree;
current value of current at current line I2Greater than line current value of I1Judging that the variable frequency compressor is in a normal running state currently; when the current value I2Line current value of less than or equal to I1And judging that the variable frequency compressor is in a standby state currently.
3. The control method of the inverter air-conditioning control system according to claim 2, wherein when the inverter compressor is in a standby state, the electronic expansion valve starts a reset operation and completes the reset within a preset reset time TF.
4. The method as claimed in claim 3, wherein after the air conditioning system is switched from the running state to the shutdown state, the shutdown time T is less than the reset time TF and receives a startup command sent by the remote controller to the indoor unit control unit, the indoor unit control unit transmits the startup command to the outdoor unit control unit, and the outdoor unit control unit starts the inverter compressor after the reset time TF elapses to start the running of the air conditioning system.
5. The method as claimed in claim 4, wherein when the shutdown time T of the inverter compressor is greater than or equal to the reset time TF and a power-on command is received from the remote controller, the outdoor unit control unit directly turns on the inverter compressor to start the air conditioning system.
6. The control method of inverter air conditioner control system according to claim 5, wherein when the air conditioner system is powered off during operation,
if the indoor unit control unit is preset with a power failure memory function, directly starting the opening of the electronic expansion valve and the operating frequency of the variable frequency compressor before power failure;
and if the control unit of the indoor unit of the air conditioner does not have the preset power-down memory function, after receiving a starting-up instruction of the remote controller, starting the air conditioning system according to the running state before the initial power-off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011144466.0A CN112393373A (en) | 2020-10-23 | 2020-10-23 | Variable frequency air conditioner control system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011144466.0A CN112393373A (en) | 2020-10-23 | 2020-10-23 | Variable frequency air conditioner control system and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112393373A true CN112393373A (en) | 2021-02-23 |
Family
ID=74595645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011144466.0A Pending CN112393373A (en) | 2020-10-23 | 2020-10-23 | Variable frequency air conditioner control system and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112393373A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509693A (en) * | 2009-03-16 | 2009-08-19 | 宁波奥克斯电气有限公司 | Frequency conversion heat pump outdoor machine of air-conditioner electronic expansion valve control method |
| JP2011117681A (en) * | 2009-12-04 | 2011-06-16 | Panasonic Corp | Refrigerating cycle device |
| JP2012047367A (en) * | 2010-08-25 | 2012-03-08 | Fujitsu General Ltd | Air conditioner |
| CN103277877A (en) * | 2013-06-24 | 2013-09-04 | 重庆星能建筑节能技术发展有限公司 | Energy-saving control system and method for air conditioner |
| CN104422061A (en) * | 2013-08-21 | 2015-03-18 | 广东美的制冷设备有限公司 | Air conditioner and quick start method thereof |
| CN105222445A (en) * | 2015-10-30 | 2016-01-06 | Tcl空调器(中山)有限公司 | The control method of electric expansion valve, device and air-conditioner set and control method thereof |
-
2020
- 2020-10-23 CN CN202011144466.0A patent/CN112393373A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509693A (en) * | 2009-03-16 | 2009-08-19 | 宁波奥克斯电气有限公司 | Frequency conversion heat pump outdoor machine of air-conditioner electronic expansion valve control method |
| JP2011117681A (en) * | 2009-12-04 | 2011-06-16 | Panasonic Corp | Refrigerating cycle device |
| JP2012047367A (en) * | 2010-08-25 | 2012-03-08 | Fujitsu General Ltd | Air conditioner |
| CN103277877A (en) * | 2013-06-24 | 2013-09-04 | 重庆星能建筑节能技术发展有限公司 | Energy-saving control system and method for air conditioner |
| CN104422061A (en) * | 2013-08-21 | 2015-03-18 | 广东美的制冷设备有限公司 | Air conditioner and quick start method thereof |
| CN105222445A (en) * | 2015-10-30 | 2016-01-06 | Tcl空调器(中山)有限公司 | The control method of electric expansion valve, device and air-conditioner set and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110173854B (en) | Low-temperature heating start control method of air conditioner and air conditioner | |
| CN107062550B (en) | Control method of water chilling unit | |
| CN101109592B (en) | Temperature emergent state controlling means for air conditioner compressor air suction port | |
| CN102353189B (en) | Quick startup control method of air conditioner | |
| CN108644973B (en) | Multi-split air-conditioning floor heating system and anti-freezing control method thereof | |
| CN107906640B (en) | Integrated cold accumulation air-conditioning system for data center and control method thereof | |
| CN113091229B (en) | Air conditioner power-off memory method and system | |
| CN114440410A (en) | Method for carrying out variable flow control on freezing and cooling water pumps based on heat exchange efficiency | |
| CN105546752A (en) | Air conditioner control method and device | |
| CN111207485A (en) | Anti-freezing control method and device, storage medium and water multi-connected system | |
| CN113137704A (en) | Heat pump air conditioning unit and method for repairing abnormal heating reversing of four-way valve of heat pump air conditioning unit | |
| WO2023279608A1 (en) | Control method for oil recovery in pipe of outdoor unit | |
| CN111780457A (en) | Control method for low water temperature starting of heat pump system | |
| CN113757945B (en) | Air conditioner control method and device, air conditioner and computer readable storage medium | |
| CN110822544A (en) | Fixed-frequency air conditioning system for improving indoor comfort | |
| WO2024046016A1 (en) | Energy-saving controller and energy-saving control method for water pump of central air conditioning system | |
| CN210267822U (en) | System for improving degree of supercooling of fluorine pump inlet | |
| CN104329781A (en) | Human detection-based adaptive air conditioner | |
| CN112393373A (en) | Variable frequency air conditioner control system and control method thereof | |
| CN114877489B (en) | Room area acquisition method, air conditioner external unit control method, device and air conditioning system | |
| CN113639385B (en) | Air conditioner and control method thereof | |
| CN113739357B (en) | Efficient machine room control method, device and system and central air conditioner | |
| CN108981215A (en) | A kind of air conditioner refrigerating surplus energy utility method | |
| CN114234468A (en) | Heat pump device control method, device, unit, computer equipment and storage medium | |
| CN114777292A (en) | Air conditioning system and control method |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210223 |
|
| RJ01 | Rejection of invention patent application after publication |