CN114183886B - Low-load operation control method for multi-split system - Google Patents
Low-load operation control method for multi-split system Download PDFInfo
- Publication number
- CN114183886B CN114183886B CN202111569054.6A CN202111569054A CN114183886B CN 114183886 B CN114183886 B CN 114183886B CN 202111569054 A CN202111569054 A CN 202111569054A CN 114183886 B CN114183886 B CN 114183886B
- Authority
- CN
- China
- Prior art keywords
- split
- started
- low
- split system
- indoor
- 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
- F24F11/46—Improving electric energy efficiency or saving
-
- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a multi-split system low-load operation control method, which comprises the following steps of; after an indoor unit of the multi-split system is started and stably operates, acquiring a target operating frequency Ftar of the multi-split system; if the multi-split air conditioner system operates at the lowest operating frequency Fmin, the lowest operating frequency Fmin is greater than the target operating frequency Ftar, and the difference value between the lowest operating frequency Fmin and the target operating frequency Ftar is greater than delta, controlling the multi-split air conditioner system to enter a low-load control mode; and after entering a low-load control mode, starting an internal machine, and controlling the multi-connected machine system to keep the minimum operation frequency Fmin to stably operate. Has the advantages that: according to the multi-online system low-load operation control method, under the condition that the multi-online system operates at the lowest operation frequency Fmin and the system load is low, so that the compressor is frequently started and stopped, and the system efficiency is poor, the multi-online system load is improved by controlling to start one indoor machine, so that the multi-online system can stably operate at the lowest operation frequency Fmin, the compressor is prevented from being frequently started and stopped, and the system energy efficiency is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a multi-split system low-load operation control method.
Background
The multi-split air conditioner system is provided with a plurality of indoor units, when the number of the started indoor units is small, the system load can be very low, especially for a household multi-split air conditioner, one indoor unit can be started for most of time to operate, a compressor has the minimum operation frequency, the system operates under a certain load for a long time, the compressor can be started and stopped frequently, and the energy efficiency is poor.
Disclosure of Invention
The invention solves the problems that the compressor is frequently started and stopped and the energy efficiency is poor due to the long-time low-load operation of the multi-split system.
In order to solve the problems, the invention provides a multi-split system low-load operation control method, which comprises the following steps of;
after an indoor unit of the multi-split system is started and stably operates, acquiring a target operating frequency Ftar of the multi-split system;
if the multi-split air conditioner system operates at the lowest operating frequency Fmin, the lowest operating frequency Fmin is greater than the target operating frequency Ftar, and the difference value between the lowest operating frequency Fmin and the target operating frequency Ftar is greater than delta, controlling the multi-split air conditioner system to enter a low-load control mode;
and after entering a low-load control mode, starting an internal machine, and controlling the multi-split air conditioner system to keep the minimum operation frequency Fmin to stably operate.
According to the multi-online system low-load operation control method, under the conditions that the multi-online system operates at the lowest operation frequency Fmin and the system load is low, so that the compressor is frequently started and stopped, and the system efficiency is poor, the multi-online system load is improved by controlling to start one indoor unit, so that the multi-online system can stably operate at the lowest operation frequency Fmin, the compressor is prevented from being frequently started and stopped, and the system energy efficiency is improved.
Further, the target operation frequency Ftar of the multi-split system is a frequency corresponding to the load of the multi-split system and capable of stably operating for a long time.
In the technical scheme, the multi-split system can stably operate at the target operation frequency Ftar, and if the target operation frequency Ftar is lower than the lowest operation frequency Fmin, the load of the multi-split system is too low, the compressor can be frequently started and stopped, and the system energy efficiency is poor.
Furthermore, delta is more than or equal to 2 and less than or equal to 5.
In the technical scheme, the difference value between the lowest operation frequency Fmin and the target operation frequency Ftar is larger than delta, which means that the load of the multi-split air-conditioning system is too low, the compressor can be started and stopped frequently, and the energy efficiency of the system is poor, so that the multi-split air-conditioning system needs to be controlled to enter a low-load control mode.
Further, when an internal machine is restarted, the restarted internal machine is selected according to the internal machine installation position information of the multi-split system, and the method comprises the following steps:
firstly, selecting an inner machine which is closest to an opened inner machine and the indoor space of the inner machine is communicated with the indoor space of the opened inner machine as a re-opened inner machine;
if the indoor spaces of other indoor units are not communicated with the indoor space of the started indoor unit, the indoor unit with the smallest capacity and the indoor space adjacent to the indoor space of the started indoor unit is selected as the re-started indoor unit;
and if the indoor space where other indoor units are located is not adjacent to the indoor space where the started indoor unit is located, selecting the indoor unit with the smallest capacity in the rest indoor units of the multi-split air-conditioning system as the restarted indoor unit.
In the technical scheme, the design can reduce the temperature difference between the indoor space where the first-time started inner machine is located and the adjacent indoor space, and improve the comfort.
Further, if there are a plurality of internal machines which are closest to the started internal machine and the indoor space where the internal machine is located is communicated with the indoor space where the started internal machine is located, the internal machine with the smallest capacity is selected from the plurality of internal machines as the re-started internal machine.
In the technical scheme, the capacity of the re-started internal machine is required to be as small as possible so as to avoid excessive power consumption and excessive system load change.
Furthermore, the wind gear of the re-started indoor unit is a mute gear.
In this technical scheme, design like this, the interior machine of avoiding reopening sends the noise and influences other people.
Furthermore, the re-started internal machine is started and stopped synchronously along with the started internal machine.
In the technical scheme, the starting and stopping of the multi-online system and the re-opened inner machine are controlled by the opened inner machine, the re-opened inner machine is driven to start and stop together by the starting and stopping caused by the temperature or oil return of the opened inner machine, and the re-opened inner machine is driven to close together by the closed opened inner machine to exit the low-load control mode.
Further, the method for controlling the low load operation of the multi-split system further comprises:
and if the running state of the firstly started inner machine is changed, the multi-split system exits the low-load control mode, and after the multi-split system runs stably again, whether the multi-split system needs to enter the low-load control mode again is controlled according to the difference value of the target running frequency Ftar of the multi-split system and the lowest running frequency Fmin of the multi-split system.
In the technical scheme, the change of the running state of the firstly started internal machine can cause the multi-split system to no longer run stably, for example, a user actively changes the set temperature of the internal machine or changes the indoor environment, so that the multi-split system needs to temporarily exit from the low-load control mode, and after the multi-split system runs stably again, the multi-split system is controlled to determine whether the multi-split system needs to re-enter the low-load control mode according to the difference value between the target running frequency Ftar of the multi-split system and the minimum running frequency Fmin of the multi-split system.
Further, the method for controlling the low-load operation of the multi-split system further comprises the following steps;
and if a third internal machine is started, the multi-split system exits the low-load control mode.
In the technical scheme, when the third internal machine is started, the load of the multi-split system is increased, and the multi-split system does not need to operate in a low-load control mode.
Furthermore, when the multi-split air conditioner system exits the low-load control mode, the re-started inner machine is synchronously closed.
Has the advantages that: according to the multi-online system low-load operation control method, under the condition that the multi-online system operates at the lowest operation frequency Fmin and the system load is low, so that the compressor is frequently started and stopped, and the system efficiency is poor, the multi-online system load is improved by controlling to start one indoor machine, so that the multi-online system can stably operate at the lowest operation frequency Fmin, the compressor is prevented from being frequently started and stopped, and the system energy efficiency is improved.
Drawings
FIG. 1 is a flowchart illustrating a method for determining whether a multi-split system enters a low load control mode according to the present invention;
fig. 2 is an operation flow chart of the multi-split system after entering a low-load control mode.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1 and fig. 2, the present invention provides a method for controlling low load operation of a multi-split system, including;
s1, after an indoor unit of a multi-split air-conditioning system is started and stably operates, acquiring a target operation frequency Ftar of the multi-split air-conditioning system, wherein the target operation frequency Ftar of the multi-split air-conditioning system is a frequency corresponding to a load of the multi-split air-conditioning system and capable of stably operating for a long time, and is usually obtained by calculation according to air suction and exhaust control or other control methods, if the target operation frequency Ftar is lower than a lowest operation frequency Fmin, the load of the multi-split air-conditioning system is too low, a compressor can only operate at the lowest operation frequency Fmin, the operation frequency cannot be further reduced, so that the compressor can be frequently started and stopped, the energy efficiency of the system is poor, and the value of the lowest operation frequency Fmin is usually 15-20Hz;
s2, if the multi-split air-conditioning system operates at the lowest operation frequency Fmin, the lowest operation frequency Fmin is greater than the target operation frequency Ftar, and the difference value between the lowest operation frequency Fmin and the target operation frequency Ftar is greater than delta, the multi-split air-conditioning system is controlled to enter a low-load control mode, preferably, delta is not less than 2 and not more than 5, and the difference value between the lowest operation frequency Fmin and the target operation frequency Ftar is greater than delta, which indicates that the multi-split air-conditioning system has too low load, a compressor is frequently started and stopped, and the system energy efficiency is poor, so that the multi-split air-conditioning system needs to be controlled to enter the low-load control mode;
and S3, after entering a low-load control mode, starting an internal machine, controlling the multi-split system to keep the minimum operation frequency Fmin to stably operate, and increasing the load of the multi-split system after starting the internal machine, so that the multi-split system can keep the minimum operation frequency Fmin to stably operate, and thus, the compressor is not frequently started and stopped any more, and the system energy efficiency is improved.
According to the multi-online system low-load operation control method, under the conditions that the multi-online system operates at the lowest operation frequency Fmin and the system load is low, so that the compressor is frequently started and stopped, and the system efficiency is poor, the multi-online system load is improved by controlling to start one indoor unit, so that the multi-online system can stably operate at the lowest operation frequency Fmin, the compressor is prevented from being frequently started and stopped, and the system energy efficiency is improved.
In this embodiment, as shown in fig. 2, when one internal machine is restarted in S3, the restarted internal machine may be selected according to the internal machine installation position information of the multi-split system, for example:
1. firstly, an inner machine which is closest to an opened inner machine and the indoor space of the inner machine is communicated with the indoor space of the opened inner machine is selected as a re-opened inner machine, at the moment, the re-opened inner machine is not only closest to the first opened inner machine, but also the indoor spaces of the two inner machines are communicated with each other, so that the design can reduce the temperature difference between the indoor space of the first opened inner machine and the adjacent indoor space, and improve the comfort of the indoor space;
2. if the indoor spaces of other indoor units are not communicated with the indoor space of the started indoor unit, the indoor unit with the smallest capacity and the indoor space adjacent to the indoor space of the started indoor unit is selected as the re-started indoor unit, and at the moment, the re-started indoor unit not only has the smallest capacity, but also has the adjacent indoor spaces of the two indoor units, so that the design can reduce the temperature difference between the indoor space of the firstly started indoor unit and the adjacent indoor space, improve the comfort of the indoor space, and avoid excessive power consumption and overlarge system load change of the re-started indoor unit;
3. if the indoor spaces of other indoor units are not adjacent to the indoor space of the started indoor unit, the indoor unit with the minimum capacity in the rest indoor units of the multi-split air-conditioning system is selected as the restarted indoor unit, and the design avoids excessive power consumption and excessive system load change of the restarted indoor unit;
in a word, the selected re-opened indoor unit is preferentially selected to be closest to the first opened indoor unit, the indoor units where the two indoor units are located are also communicated with each other, then the indoor unit with the smallest capacity is selected, the indoor unit where the indoor unit is located is adjacent to the indoor space where the opened indoor unit is located, and finally the indoor unit with the smallest capacity in the remaining indoor units is selected.
In this embodiment, further, if there are a plurality of internal machines closest to the started internal machine and communicating the indoor space where the internal machine is located with the indoor space where the started internal machine is located, the internal machine with the smallest capacity is selected from the plurality of internal machines as the re-started internal machine, so as to avoid excessive power consumption of the re-started internal machine and excessive system load change.
In this embodiment, the wind shelves of the indoor unit that reopens are silence shelves to avoid the indoor unit that reopens to send out the noise and influence other people, further, the indoor unit that reopens opens is opened and stops in step along with having opened the indoor unit, also promptly many online systems and the indoor unit that reopens all receive the indoor unit control of having opened, open the indoor unit to the temperature or stop starting and stopping that oil return etc. arouse and can drive the indoor unit that reopening and open and stop together, of course, the indoor unit that has opened closes also can drive reopening closes together and withdraws from low-load control mode.
In addition, in this embodiment, as shown in fig. 1, the method for controlling low load operation of a multiple split system further includes:
s4, entering a multi-split system of a low-load control mode, if the running state of an internal machine which is started for the first time is changed, the multi-split system exits the low-load control mode, after the multi-split system operates stably again, whether the multi-split system needs to enter the low-load control mode again is controlled according to the difference value of the target running frequency Ftar of the multi-split system and the minimum running frequency Fmin of the multi-split system, for example, a user actively changes the set temperature of the internal machine which is started for the first time or the indoor environment changes, the multi-split system needs to temporarily exit the low-load control mode, after the multi-split system operates stably again, whether the multi-split system needs to enter the low-load control mode again is controlled according to the difference value of the target running frequency Ftar of the multi-split system and the minimum running frequency Fmin of the multi-split system, in addition, if a third low-load internal machine is started, the multi-split system exits the low-split system, and when the third internal machine is started, the load of the multi-split system is increased, the multi-split system does not need to operate in the low-load control mode.
In this embodiment, when the multi-split air-conditioning system exits the low-load control mode, the re-started internal unit is turned off, and only the internal unit which is turned on for the first time is kept to continue running.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A multi-split system low-load operation control method is characterized by comprising the following steps:
after an indoor unit of the multi-split system is started and stably operates, acquiring a target operating frequency Ftar of the multi-split system;
if the multi-split air conditioner system operates at the lowest operating frequency Fmin, the lowest operating frequency Fmin is greater than the target operating frequency Ftar, and the difference value between the lowest operating frequency Fmin and the target operating frequency Ftar is greater than delta, controlling the multi-split air conditioner system to enter a low-load control mode;
after entering a low-load control mode, starting an internal machine, and controlling a multi-split system to keep the minimum operation frequency Fmin to stably operate;
when an internal machine is restarted, the restarted internal machine is selected according to the internal machine installation position information of the multi-split air conditioner system, and the method comprises the following steps:
firstly, selecting an inner machine which is closest to an opened inner machine and the indoor space of the inner machine is communicated with the indoor space of the opened inner machine as a re-opened inner machine;
if the indoor spaces of other indoor units are not communicated with the indoor space of the started indoor unit, the indoor unit with the smallest capacity and the indoor space adjacent to the indoor space of the started indoor unit is selected as the re-started indoor unit;
and if the indoor spaces where other indoor units are located are not adjacent to the indoor space where the started indoor unit is located, selecting the indoor unit with the minimum capacity in the rest indoor units of the multi-split air-conditioning system as the restarted indoor unit.
2. The multi-split system low load operation control method as claimed in claim 1, wherein the multi-split system target operation frequency Ftar is a frequency corresponding to a multi-split system load and capable of stable operation for a long time.
3. The multi-split system low load operation control method as claimed in claim 1, wherein δ is 2 ≤ δ ≤ 5.
4. The multi-online system low load operation control method according to claim 1, wherein if there are a plurality of the internal machines which are closest to the turned-on internal machine and whose indoor spaces are in communication with the indoor space in which the turned-on internal machine is located, the internal machine having the smallest capacity is selected among the plurality of internal machines as the turned-on internal machine.
5. The multi-split system low load operation control method as claimed in claim 1, wherein the wind break of the re-activated indoor unit is a mute break.
6. The multi-split system low load operation control method as claimed in claim 1, wherein the re-started indoor unit is started and stopped synchronously with the started indoor unit.
7. The multi-split system low load operation control method as claimed in claim 1, further comprising:
and if the running state of the firstly started inner machine is changed, the multi-split system exits the low-load control mode, and after the multi-split system runs stably again, whether the multi-split system needs to enter the low-load control mode again is controlled according to the difference value of the target running frequency Ftar of the multi-split system and the lowest running frequency Fmin of the multi-split system.
8. The multi-split system low load operation control method as claimed in claim 1, further comprising;
and if a third internal machine is started, the multi-split system exits the low-load control mode.
9. The multi-split system low load operation control method as claimed in claim 7 or 8, wherein when the multi-split system exits the low load control mode, the re-opened internal machines are synchronously turned off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111569054.6A CN114183886B (en) | 2021-12-21 | 2021-12-21 | Low-load operation control method for multi-split system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111569054.6A CN114183886B (en) | 2021-12-21 | 2021-12-21 | Low-load operation control method for multi-split system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114183886A CN114183886A (en) | 2022-03-15 |
| CN114183886B true CN114183886B (en) | 2023-03-31 |
Family
ID=80544637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111569054.6A Active CN114183886B (en) | 2021-12-21 | 2021-12-21 | Low-load operation control method for multi-split system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114183886B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109654653B (en) * | 2018-11-26 | 2020-04-28 | 珠海格力电器股份有限公司 | Control method and device for frequency adjustment of multi-connected air conditioning unit and air conditioner |
| CN110081554B (en) * | 2019-05-07 | 2020-12-25 | 珠海格力电器股份有限公司 | Control method and device of multi-split air conditioning system |
| JP7417368B2 (en) * | 2019-05-27 | 2024-01-18 | シャープ株式会社 | air conditioner |
| CN110542194B (en) * | 2019-09-24 | 2020-08-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor control method and device, storage medium, processor and compressor |
| CN111023434B (en) * | 2019-12-31 | 2021-08-20 | 宁波奥克斯电气股份有限公司 | Operation control method and system of air conditioner, air conditioner and storage medium |
-
2021
- 2021-12-21 CN CN202111569054.6A patent/CN114183886B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114183886A (en) | 2022-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10551086B2 (en) | Sound level control in an HVAC system | |
| CN107062563B (en) | Control method of air-conditioning air-cooling unit and air conditioner | |
| EP3808978B1 (en) | Method and apparatus for controlling compressor to switch cylinder mode, machine set, and air conditioner system | |
| US10495365B2 (en) | Method and apparatus for balanced fluid distribution in tandem-compressor systems | |
| US10788247B2 (en) | Control mechanism for climate control unit with multiple stages | |
| CN114294789B (en) | Control method of air conditioning system, air conditioning system and air conditioner | |
| CN107642933B (en) | Air door control method and device, air outlet system and equipment | |
| CN112128867A (en) | Multi-system dehumidification control method and device | |
| CN105004086A (en) | Control method and device for screw water chiller and air conditioner | |
| CN114183886B (en) | Low-load operation control method for multi-split system | |
| CN108917083A (en) | A kind of control method of air conditioner, device, storage medium | |
| CN114811860A (en) | Multi-split air conditioning system control method and multi-split air conditioning system | |
| WO2023246906A1 (en) | Air conditioner control method and air conditioner | |
| CN113465098A (en) | Control method and device for optimizing shutdown airflow sound of compressor and air conditioner | |
| CN113375238A (en) | Capacity output control method for floor heating multi-split air conditioner using refrigerant | |
| CN107606695B (en) | Air conditioner and control method thereof | |
| CN110926100B (en) | ECO energy-saving mode control method and system for self-cascade dual-system ultralow-temperature refrigerator | |
| US20180340526A1 (en) | Method and apparatus for common pressure and oil equalization in multi-compressor systems | |
| CN114087738A (en) | Control method and device of air conditioner, storage medium and air conditioner | |
| JP6767906B2 (en) | heat pump | |
| CN113587339A (en) | Control method and device for rapidly balancing pressure difference of air conditioning system and air conditioner | |
| CN113865059A (en) | Heating operation control method for multi-split air conditioner | |
| CN113623840A (en) | Multi-split air conditioning system and oil return control method and device thereof, storage medium and processor | |
| CN114719392B (en) | Automatic cleaning method and device for air conditioner, air conditioner and storage medium | |
| CN114264048B (en) | Air conditioning unit control method and device and air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220920 Address after: 315191 No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Applicant after: NINGBO AUX ELECTRIC Co.,Ltd. Applicant after: AUX AIR CONDITIONING LIMITED BY SHARE Ltd. Address before: 315191 No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Applicant before: NINGBO AUX ELECTRIC Co.,Ltd. Applicant before: Ningbo Oxfam intelligent commercial air conditioning manufacturing Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |