CN113883652A - Control method for outdoor fan of variable frequency air conditioner - Google Patents
Control method for outdoor fan of variable frequency air conditioner Download PDFInfo
- Publication number
- CN113883652A CN113883652A CN202111252207.4A CN202111252207A CN113883652A CN 113883652 A CN113883652 A CN 113883652A CN 202111252207 A CN202111252207 A CN 202111252207A CN 113883652 A CN113883652 A CN 113883652A
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- CN
- China
- Prior art keywords
- outdoor fan
- air conditioner
- outdoor
- time
- control method
- 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.)
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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
- F24F11/61—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
- F24F11/62—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
-
- 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
- F24F2140/40—Damper positions, e.g. open or closed
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Thermal Sciences (AREA)
- Human Computer Interaction (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to a control method of an outdoor fan of a variable frequency air conditioner, which comprises the following steps: 1) starting the air conditioner for operation; 2) detecting whether an outdoor fan is started; if yes, turning to the next step; if not, keeping the current running state; 3) detecting an outdoor environment temperature W1; meanwhile, the accumulated time T begins to time; 4) the outdoor fan carries out plus-minus gear adjustment according to an adjustment period Sa; wherein, Sa is a set value and corresponds to different W1; 5) when T = T0 or the system high voltage reaches a protection interval, turning to step 6): wherein, T0 is a set time; 6) the outdoor fan carries out plus-minus gear adjustment according to the conventional period Sr; wherein Sr is less than or equal to Sa. The invention can accurately adjust the starting initial stage of the outdoor fan of the variable frequency air conditioner under the low-temperature refrigeration working condition, avoid the problem of frequent starting and stopping, ensure the stability of the system pressure and ensure the refrigeration effect of constant temperature and constant humidity.
Description
Technical Field
The invention relates to an air conditioner control method, in particular to a control method of an air conditioner outdoor fan, and specifically relates to a control method of an outdoor fan of a variable frequency air conditioner.
Background
At present, the fan of the traditional variable frequency air conditioner is regulated according to the fixed period. When the outdoor environment temperature is low, such as the low-temperature refrigeration working condition, frequent starting and stopping of the fan easily occurs, so that the pressure of the system is unstable, and the refrigeration effect of the system is suddenly cooled and suddenly heated. Especially, in a variable-frequency constant-temperature and constant-humidity air conditioning system, the start and stop of a fan easily causes the fluctuation of system pressure, so that the stability of a dehumidification effect is influenced, and the requirements for constant temperature and constant humidity are difficult to meet.
Therefore, improvements are needed to fully meet the market demand.
Disclosure of Invention
The invention aims to provide a control method of an outdoor fan of a variable frequency air conditioner aiming at the defects of the prior art, which can effectively solve the problem that the outdoor fan is frequently started and stopped when the variable frequency air conditioner is in a low-temperature refrigeration working condition, improve the adjustment accuracy of the fan and meet the use requirements of constant temperature and constant humidity.
The technical scheme of the invention is as follows:
the control method of the outdoor fan of the frequency conversion air conditioner, the said air conditioner has outdoor temperature pick-up, can detect the outdoor temperature in real time; the air conditioner is provided with a high-pressure sensor which can detect the high pressure of the system in real time; the control method comprises the following steps:
1) starting the air conditioner for operation;
2) detecting whether an outdoor fan is started; if yes, turning to the next step; if not, keeping the current running state;
3) detecting an outdoor environment temperature W1; meanwhile, the accumulated time T begins to time;
4) the outdoor fan carries out plus-minus gear adjustment according to an adjustment period Sa; wherein, Sa is a set value and corresponds to different W1;
5) when T is T0, or the system high voltage reaches the protection interval, turning to step 6): wherein, T0 is a set time;
6) the outdoor fan carries out plus-minus gear adjustment according to the conventional period Sr; wherein Sr is less than or equal to Sa.
Further, the Sa is set as follows:
further, in the step 4), the outdoor fan performs up-down gear adjustment according to the high pressure of the system; when the actual high pressure is larger than the target high pressure, the gear is shifted up; otherwise, the gear is shifted down.
Further, the T0 is 5-10 min.
The invention has the beneficial effects that:
the invention can accurately adjust the starting initial stage of the outdoor fan of the variable frequency air conditioner under the low-temperature refrigeration working condition, avoids the problem of frequent starting and stopping of the fan, ensures the stability of the system pressure and ensures the refrigeration effect of constant temperature and constant humidity.
Detailed Description
The present invention will be further described with reference to the following examples.
A control method of an outdoor fan of a variable frequency air conditioner is applied to a perennial refrigeration type constant temperature and humidity air conditioner. The air conditioner is provided with an outdoor temperature sensor, and can detect the outdoor temperature in real time. Meanwhile, the air conditioner is provided with a high-pressure sensor, so that the high pressure of the system can be detected in real time, the starting, the stopping and the rotating speed of the outdoor fan can be controlled according to the high pressure of the system, and the condensation effect of the system can be adjusted. The controller of the air conditioner also has the function of timing the starting and stopping of the outdoor fan and the like.
The control method of the outdoor fan of the variable-frequency air conditioner comprises the following steps:
1) starting the air conditioner for operation;
2) detecting whether an outdoor fan is started; if yes, turning to the next step; if not, keeping the current running state;
3) detecting an outdoor environment temperature W1; meanwhile, the accumulated time T begins to time;
4) the outdoor fan carries out plus-minus gear adjustment according to an adjustment period Sa; wherein, Sa is a set value and corresponds to different W1; the outdoor fan carries out plus-minus gear adjustment according to the high pressure of the system: when the actual high pressure is larger than the target high pressure, the gear is shifted up, otherwise, the gear is shifted down;
5) when T is T0, or the system high voltage reaches the protection interval, turning to step 6): wherein T0 is set time, which can be 5-10 min;
6) the outdoor fan carries out plus-minus gear adjustment according to the conventional period Sr; wherein Sr is less than or equal to Sa; sr is usually 10 s.
Further, the Sa is set as follows:
| W1(℃) | Sa |
| (-∞，-5] | 30s |
| (-5，10] | 20s |
| (10，25] | 15s |
| (25，∞) | 10s |
。
aiming at the refrigerating operation of the variable frequency air conditioner under the low temperature working condition, the invention adjusts the adjusting time of the fan to be longer than the conventional adjusting time according to the outdoor environment temperature within the initial 5-10 minutes of the starting of the outdoor fan every time, thereby avoiding the frequent starting and stopping of the fan and the unstable indoor temperature caused by the system pressure fluctuation caused by the frequent starting and stopping of the fan and ensuring the refrigerating effect of constant temperature and humidity.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
Claims (4)
1. The control method of the outdoor fan of the frequency conversion air conditioner, the said air conditioner has outdoor temperature pick-up, can detect the outdoor temperature in real time; the air conditioner is provided with a high-pressure sensor which can detect the high pressure of the system in real time; the control method is characterized by comprising the following steps:
1) starting the air conditioner for operation;
2) detecting whether an outdoor fan is started; if yes, turning to the next step; if not, keeping the current running state;
3) detecting an outdoor environment temperature W1; meanwhile, the accumulated time T begins to time;
4) the outdoor fan carries out plus-minus gear adjustment according to an adjustment period Sa; wherein, Sa is a set value and corresponds to different W1;
5) when T = T0 or the system high voltage reaches a protection interval, turning to step 6): wherein, T0 is a set time;
6) the outdoor fan carries out plus-minus gear adjustment according to the conventional period Sr; wherein Sr is less than or equal to Sa.
2. The method as claimed in claim 1, wherein said Sa is set as follows:
。
3. the method as claimed in claim 1, wherein in the step 4), the outdoor fan is adjusted by up-down shifting according to the system high voltage: when the actual high pressure is larger than the target high pressure, the gear is shifted up; otherwise, the gear is shifted down.
4. The method as claimed in claim 1, wherein the time T0 is 5-10 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111252207.4A CN113883652B (en) | 2021-10-27 | 2021-10-27 | Control method for outdoor fan of variable frequency air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111252207.4A CN113883652B (en) | 2021-10-27 | 2021-10-27 | Control method for outdoor fan of variable frequency air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113883652A true CN113883652A (en) | 2022-01-04 |
| CN113883652B CN113883652B (en) | 2022-12-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111252207.4A Active CN113883652B (en) | 2021-10-27 | 2021-10-27 | Control method for outdoor fan of variable frequency air conditioner |
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| Country | Link |
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| CN (1) | CN113883652B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58102045A (en) * | 1981-12-11 | 1983-06-17 | Hitachi Ltd | Air conditioner |
| CN1888749A (en) * | 2005-06-28 | 2007-01-03 | 乐金电子(天津)电器有限公司 | Method for controlling central air conditioner electromagnetic expanding valve |
| CN101256021A (en) * | 2007-09-27 | 2008-09-03 | 宁波奥克斯空调有限公司 | Control method for air conditioner capable of low-temperature refrigeration |
| CN102997367A (en) * | 2012-12-05 | 2013-03-27 | 宁波奥克斯电气有限公司 | Refrigerating starting method of multi-split air conditioner |
| 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 |
| CN104791966A (en) * | 2015-04-09 | 2015-07-22 | 广东美的制冷设备有限公司 | Air conditioner and low-temperature cooling control method and device of air conditioner |
| CN110726202A (en) * | 2019-10-25 | 2020-01-24 | 宁波奥克斯电气股份有限公司 | External fan control method of air conditioner and air conditioner |
| CN111023423A (en) * | 2019-12-27 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Control method and device for electronic expansion valve of air conditioner, medium and air conditioner |
| CN113007832A (en) * | 2021-04-20 | 2021-06-22 | 宁波奥克斯电气股份有限公司 | Low-temperature refrigeration control method and device and air conditioner |
-
2021
- 2021-10-27 CN CN202111252207.4A patent/CN113883652B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58102045A (en) * | 1981-12-11 | 1983-06-17 | Hitachi Ltd | Air conditioner |
| CN1888749A (en) * | 2005-06-28 | 2007-01-03 | 乐金电子(天津)电器有限公司 | Method for controlling central air conditioner electromagnetic expanding valve |
| CN101256021A (en) * | 2007-09-27 | 2008-09-03 | 宁波奥克斯空调有限公司 | Control method for air conditioner capable of low-temperature refrigeration |
| CN102997367A (en) * | 2012-12-05 | 2013-03-27 | 宁波奥克斯电气有限公司 | Refrigerating starting method of multi-split air conditioner |
| 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 |
| CN104791966A (en) * | 2015-04-09 | 2015-07-22 | 广东美的制冷设备有限公司 | Air conditioner and low-temperature cooling control method and device of air conditioner |
| CN110726202A (en) * | 2019-10-25 | 2020-01-24 | 宁波奥克斯电气股份有限公司 | External fan control method of air conditioner and air conditioner |
| CN111023423A (en) * | 2019-12-27 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Control method and device for electronic expansion valve of air conditioner, medium and air conditioner |
| CN113007832A (en) * | 2021-04-20 | 2021-06-22 | 宁波奥克斯电气股份有限公司 | Low-temperature refrigeration control method and device and air conditioner |
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| Publication number | Publication date |
|---|---|
| CN113883652B (en) | 2022-12-06 |
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