CN110542149A - defrosting control method for air conditioning system and air conditioning system - Google Patents
defrosting control method for air conditioning system and air conditioning system Download PDFInfo
- Publication number
- CN110542149A CN110542149A CN201910786336.8A CN201910786336A CN110542149A CN 110542149 A CN110542149 A CN 110542149A CN 201910786336 A CN201910786336 A CN 201910786336A CN 110542149 A CN110542149 A CN 110542149A
- Authority
- CN
- China
- Prior art keywords
- air conditioning
- defrosting
- conditioning system
- pipeline
- air conditioner
- 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
- 238000010257 thawing Methods 0.000 title claims abstract description 127
- 238000004378 air conditioning Methods 0.000 title claims abstract description 101
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 47
- 230000009897 systematic effect Effects 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 description 7
- 238000001514 detection method Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/009—Indoor units, e.g. fan coil units characterised by heating arrangements
-
- 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
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—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
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/34—Heater, e.g. gas burner, electric air heater
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioning system, which comprises a variable frequency compressor, an air conditioning outdoor unit, an electronic expansion valve and an air conditioning indoor unit which are sequentially connected through a pipeline, and further comprises a defrosting branch and a control device, wherein one end of the defrosting branch is communicated with the pipeline between the variable frequency compressor and the air conditioning indoor unit, the other end of the defrosting branch is communicated with the pipeline between the electronic expansion valve and the air conditioning outdoor unit, the control device comprises a control module and a heating module, and the control module is used for controlling the air conditioning system to be switched between the defrosting branch and the pipeline of the air conditioning indoor unit; the heating module is connected with the control module, and the heating module is used for opening the heating module to supply heat to the indoor space when the air conditioning system is communicated with the defrosting branch. The invention also discloses a defrosting control method of the air conditioning system. The air conditioning system does not absorb heat from the indoor in the defrosting state, can ensure the defrosting speed, supplies heat to the room during defrosting, and improves the heating comfort.
Description
Technical Field
The invention relates to an air conditioner, in particular to a defrosting control method of an air conditioning system and the air conditioning system.
Background
the traditional air conditioning system consists of a compressor, a four-way valve, an air conditioning outdoor unit, an electronic expansion valve and an air conditioning indoor unit, wherein during heating circulation, a refrigerant of the air conditioning indoor unit is in a high-temperature and high-pressure state, the temperature in the air conditioning outdoor unit is usually lower than 0 degree, the air conditioning outdoor unit can frost after running for a period of time, and the temperature of the air conditioning outdoor unit after frosting is lower and lower, so that the indoor heating effect is seriously influenced.
Therefore, the outdoor unit of the air conditioner needs to be defrosted at intervals, the traditional defrosting mode is to perform reversing defrosting on the four-way valve, the four-way valve is switched from the original heating mode to the cooling mode, meanwhile, the bypass valve is opened, so that refrigerant discharged from an exhaust port of the indoor unit of the air conditioner directly enters the outdoor unit of the air conditioner through the bypass valve to achieve extensive and uniform defrosting of the air conditioner, the indoor unit of the air conditioner can always absorb heat on the indoor side in the whole defrosting process, and the compressor needs to be stopped for 2 times from beginning to end, repeated defrosting not only causes large indoor temperature fluctuation, but also has long defrosting time, and greatly reduces user experience.
Disclosure of Invention
The invention aims to provide a defrosting control method for an air conditioning system and the air conditioning system, so as to solve the technical problems mentioned in the background technology.
In order to achieve the purpose, the invention provides a defrosting control method of an air conditioning system and a specific technical scheme of the air conditioning system, wherein the defrosting control method comprises the following steps:
The utility model provides an air conditioning system, includes the variable frequency compressor who loops through the pipe connection, air condensing units, electronic expansion valve and air conditioning indoor set, air conditioning system still includes change white branch road and controlling means, changes on the pipeline of white branch road one end intercommunication between variable frequency compressor and air conditioning indoor set, changes on the pipeline of the other end intercommunication of white branch road between electronic expansion valve and air conditioning outdoor set, and controlling means includes control module and heating module, wherein:
The control module is used for controlling the air conditioning system to switch between the defrosting branch and the pipeline of the indoor unit of the air conditioner;
The heating module is connected with the control module, and the heating module is used for opening the heating module to supply heat to the indoor space when the air conditioning system is communicated with the defrosting branch.
furthermore, the defrosting branch is communicated with a pipeline between the variable frequency compressor and the air-conditioning indoor unit through a three-way valve, electric switches are respectively arranged on the defrosting branch and the air-conditioning indoor unit pipeline, the electric switches are electrically connected with the control module, and the control module controls the air-conditioning system to switch between the defrosting branch and the air-conditioning indoor unit pipeline through the control electric switches.
Furthermore, the defrosting branch is communicated with a pipeline between the variable frequency compressor and the air-conditioning indoor unit through a three-way electromagnetic valve, the three-way electromagnetic valve is electrically connected with the control module, and the control module controls the air-conditioning system to switch between the defrosting branch and the pipeline of the air-conditioning indoor unit by controlling the three-way electromagnetic valve.
Furthermore, the control device further comprises an operation time recording module and a temperature detection module, the operation time recording module is used for recording the operation time of the air conditioning unit during continuous operation, the temperature detection module is used for detecting the temperature of the outer pipe of the outdoor unit of the air conditioner, and when the continuous operation time of the air conditioning system is greater than a time threshold value and the temperature of the outer pipe continuously monitored by the outer pipe is smaller than a temperature threshold value, the control module controls the three-way valve to switch between the defrosting branch and the pipeline of the indoor unit of the air conditioner.
A defrosting control method of an air conditioning system is applied to the air conditioning system, and mainly comprises the following steps:
when the air conditioner is detected to meet the defrosting condition, controlling the air conditioning system to cut off the connection with the pipeline of the indoor unit of the air conditioner and switch on the connection between the air conditioning system and the defrosting branch;
When the air conditioning system is communicated with the defrosting branch, the control module starts the heating module to supply heat to the indoor space.
further, the control method mainly comprises the following steps:
detecting whether the air conditioner meets defrosting conditions: judging whether the air conditioner meets defrosting conditions or not according to the continuous operation time of the air conditioner and the temperature of the outer pipe;
and (3) systematic defrosting control step: when the air conditioning system meets defrosting conditions, the control module cuts off a pipeline flowing to the indoor unit and communicates with a defrosting branch; meanwhile, a heating module of the indoor unit of the air conditioner is started;
exiting the defrosting mode: and when the continuously detected temperature of the outer pipe is less than the temperature threshold value, the control module cuts off the defrosting branch and communicates with the pipeline of the indoor unit of the air conditioner, and the heating module is closed.
Further, in the step of detecting whether the air conditioner meets the defrosting condition, the condition that the system meets the defrosting condition is as follows: after the heating state is continuously operated for a period of time, the continuously detected temperature of the outer pipe is less than the temperature threshold value.
further, the continuous operation time of the air conditioning system in the heating state is determined according to the last defrosting time and the current outer pipe temperature.
further, the last defrosting time is less than 5min, and when the temperature of the current outer pipe is more than 0 ℃ and less than 5 ℃, the value of the continuous operation time of the air conditioner is 35.
The defrosting control method of the air conditioning system and the air conditioning system have the following advantages that:
The air conditioning system and the control method thereof do not absorb heat from the indoor in the defrosting state, can ensure the defrosting speed, can supply heat to the room in the defrosting period, reduce the temperature drop of the room in the defrosting period, and improve the heating comfort.
Furthermore, the control system and the control method of the invention judge whether the air conditioning system needs defrosting or not by detecting the continuous operation time of the air conditioning system and the temperature of the outer pipe, thereby greatly improving the automation degree of the air conditioner.
drawings
Fig. 1 is a schematic structural view illustrating a refrigerant flow direction of an air conditioning system according to the present invention during a normal heating period;
FIG. 2 is a schematic view of a refrigerant flow direction of the air conditioning system during defrosting according to the present invention;
FIG. 3 is a schematic structural diagram of a control device of the air conditioning system of the present invention;
fig. 4 is a flow chart of the defrosting process of the air conditioning system of the present invention.
The reference numbers in the figures illustrate: 1. a variable frequency compressor; 2. a four-way valve; 3. an air-conditioning indoor unit; 31. an indoor fan; 4. an electronic expansion valve; 5. an air conditioner outdoor unit; 51. an outdoor fan; 52. a temperature detector; 6. a three-way valve; 7. a defrosting branch; 8. the module is heated.
Detailed Description
In order to better understand the purpose, structure and function of the present invention, a method for controlling defrosting of an air conditioning system and an air conditioning system according to the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, the air conditioning system of the present invention includes a variable frequency compressor 1, a four-way valve 2, an air conditioner outdoor unit 5, an electronic expansion valve 4, and an air conditioner indoor unit 3, which are sequentially connected by a pipeline, and further includes a defrosting branch 7, a three-way valve 6, and a control device of the three-way valve 6, where one end of the defrosting branch 7 is connected to the pipeline between the four-way valve 2 and the air conditioner indoor unit 3 through the three-way valve 6, the other end of the defrosting branch 7 is connected to the pipeline between the electronic expansion valve 4 and the air conditioner outdoor unit 5, the control device includes a control module and a heating module 8, and the three-way:
The control module is used for controlling the three-way valve 6 to switch between the defrosting branch 7 and the pipeline of the indoor unit 3 of the air conditioner;
heating module 8, heating module 8 sets up in air conditioning indoor set 3, and heating module 8 links to each other with control module, and heating module 8 is used for when three-way valve 6 intercommunication defrosting branch road 7, and control module opens heating module 8 and to indoor heat supply. During defrosting, the heating module 8 is started, so that heat can be continuously supplied during defrosting, the indoor temperature drop is reduced, and the comfort is improved. The heating module 8 is arranged in the indoor unit, and during defrosting, the indoor fan 31 operates at a low wind speed to blow hot air indoors.
During normal heating, the three-way valve 6 closes the flow path of the branch pipe flowing to the hot gas bypass defrosting, the high-temperature gaseous refrigerant discharged by the variable-frequency compressor 1 is completely used for heating of the indoor air conditioner 3, during defrosting, the three-way valve 6 closes the pipeline flowing to the indoor air conditioner 3, and meanwhile, the electronic expansion valve 4 is completely closed, so that the high-temperature gaseous refrigerant discharged by the variable-frequency compressor 1 is completely used for defrosting of the outdoor air conditioner 5, and meanwhile, the heating module 8 of the indoor air conditioner 3 is opened for indoor heating.
Furthermore, electric switches are respectively arranged on the defrosting branch 7 and the pipeline of the indoor unit 3 of the air conditioner, and the electric switches are electrically connected with the control module.
further, the three-way valve 6 is a three-way electromagnetic valve.
Furthermore, the control device further comprises an operation time recording module, the operation time recording module is used for recording the operation time of the air conditioning unit during continuous operation, when the continuous operation time is larger than a time threshold value, the air conditioning unit frosts and needs defrosting, and the control module controls the three-way valve 6 to switch among pipelines.
Further, the control device further comprises a temperature detection module, the temperature detection module is used for detecting the temperature of an outer pipe of the air conditioner outdoor unit 5, when the temperature of the outer pipe continuously monitored by the outer pipe is smaller than a temperature threshold value, the air conditioner unit is seriously frosted, and the control module controls the three-way valve 6 to switch among pipelines.
Preferably, when the continuous operation time is greater than the time threshold and the outer pipe temperature continuously monitored by the outer pipe is less than the temperature threshold, the air conditioning unit frosts and needs defrosting, and the control module controls the three-way valve 6 to switch among the pipelines. The frosting condition of the air conditioning unit is monitored through the continuous operation time of the air conditioning unit and the temperature of the outer pipe, and automatic defrosting control is carried out, so that the frequent defrosting process is avoided, and the severe frosting of the air conditioning unit is also avoided.
Further, an air outlet and an air inlet of the variable frequency compressor 1 are respectively communicated with a D port and an S port of the four-way valve 2, an E port and a C port of the four-way valve 2 are respectively connected with the indoor air conditioner 3 and the outdoor air conditioner 5, and the indoor air conditioner 3 and the outdoor air conditioner 5 are communicated through the electronic expansion valve 4.
As shown in fig. 4, a control method for defrosting an air conditioner is applied to the air conditioning system, and the control method mainly includes the following steps:
When the condition that the air conditioner meets defrosting conditions is detected, the three-way valve 6 is controlled to cut off the connection with the pipeline of the indoor unit 3 of the air conditioner, and the three-way valve 6 is connected with the defrosting branch 7;
When the three-way valve 6 is communicated with the defrosting branch 7, the control module starts the heating module 8 to supply heat to the indoor space.
Further, the control method mainly comprises the following steps:
Detecting whether the air conditioner meets defrosting conditions: judging whether the air conditioner meets defrosting conditions or not according to the continuous operation time of the air conditioner and the temperature of the outer pipe;
After continuously running for Xmin in the heating state, the system starts to detect whether the defrosting condition is met, and when the temperature of the outer pipe detected by the temperature detector 52 in the continuous Ymin time is less than T1, the system meets the defrosting condition and starts to enter the defrosting state.
the value of X may be varied, and may be specifically determined according to the last defrosting time and the current outer tube temperature, for example, when the last defrosting time is less than 5min, and the current outer tube temperature is greater than 0 ℃ and less than 5 ℃, X may be 35 at this time; the value of Y can be varied, and is mainly used for preventing false detection, for example, Y is 1; the value of T1 may vary, with smaller values of T1 giving more frequent defrosting, for example T1 ═ 2 ℃.
And (3) systematic defrosting control step: the three-way valve 6 cuts off a flow path flowing to the indoor unit, the electronic expansion valve 4 is closed, the frequency of the compressor is increased to the defrosting frequency F for defrosting, the external fan stops running, and all high-temperature gaseous refrigerants discharged by the compressor are subjected to heat exchange and defrosting through the outdoor unit; meanwhile, in order to ensure continuous heat supply during defrosting, the heating module 8 of the indoor unit 3 of the air conditioner is started, and the indoor fan 31 operates at a low wind speed to blow out hot air indoors.
in order to ensure the reliability of the compressor, after entering hot gas bypass defrosting for m times, entering 1 time of conventional defrosting, wherein the value of m is variable and can be determined according to the last defrosting time and the current outer tube temperature, for example, the last defrosting time is more than 7min, and when the current outer tube temperature is less than-5 ℃, the value of m is 5.
Exiting the defrosting mode: when the temperature T of the outer pipe detected by the temperature detector 52 in continuous Ymin is less than T2, the system starts to exit from the defrosting state, the three-way valve 6 is controlled to cut off a flow path flowing to hot gas bypass defrosting, the electronic expansion valve 4 is opened, the frequency of the compressor is recovered to the normal frequency F, the outer fan normally operates, the heating module 8 is closed, and the rotating speed of the indoor fan 31 is recovered to the rotating speed during normal heating.
Wherein, the value of T2 can be changed, the larger the value of T2 is, the longer the defrosting time is, for example, T2 is 6 ℃.
the air conditioning system and the control method thereof can not absorb heat from the indoor in the defrosting state, can ensure the defrosting speed, can supply heat to the room in the defrosting period, reduce the temperature drop of the room in the defrosting period, and improve the heating comfort. Whether the air conditioning system needs defrosting or not is judged by detecting the continuous operation time of the air conditioning system and the temperature of the outer pipe, and the automation degree of the air conditioner is greatly improved.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (9)
1. the utility model provides an air conditioning system, including the inverter compressor (1) that loops through the pipe connection, air condensing units (5), machine (3) in electronic expansion valve (4) and the air conditioning, a serial communication port, air conditioning system is still including changing white branch road (7) and controlling means, it is on the pipeline between inverter compressor (1) and air conditioning machine (3) to change white branch road (7) one end intercommunication, the other end intercommunication of changing white branch road (7) is on the pipeline between electronic expansion valve (4) and air condensing units (5), controlling means includes control module and heating module (8), wherein:
The control module is used for controlling the air conditioning system to switch between the defrosting branch (7) and the pipeline of the air conditioning indoor unit (3);
heating module (8), heating module (8) link to each other with control module, and heating module (8) are used for when air conditioning system intercommunication defrosting branch road (7), and control module opens heating module (8) to indoor heat supply.
2. The air conditioning system according to claim 1, wherein one end of the defrosting branch (7) is communicated with a pipeline between the inverter compressor (1) and the indoor unit (3) of the air conditioner through a three-way valve (6), the defrosting branch (7) and the pipeline of the indoor unit (3) of the air conditioner are respectively provided with an electric switch, the electric switches are electrically connected with a control module, and the control module controls the air conditioning system to switch between the defrosting branch (7) and the pipeline of the indoor unit (3) of the air conditioner through controlling the electric switches.
3. The air conditioning system according to claim 1, wherein one end of the defrosting branch (7) is communicated with a pipeline between the inverter compressor (1) and the air conditioning indoor unit (3) through a three-way electromagnetic valve, the three-way electromagnetic valve is electrically connected with the control module, and the control module controls the air conditioning system to switch between the defrosting branch (7) and the pipeline of the air conditioning indoor unit (3) by controlling the three-way electromagnetic valve.
4. the air conditioning system of claim 1, wherein the control device further comprises a running time recording module and a temperature detecting module, the running time recording module is used for recording the running time of the air conditioning unit during continuous running, the temperature detecting module is used for detecting the temperature of the outer pipe of the outdoor unit (5), and when the continuous running time of the air conditioning system is greater than a time threshold and the continuously monitored temperature of the outer pipe is less than a temperature threshold, the control module controls the three-way valve (6) to switch between the defrosting branch (7) and the pipeline of the indoor unit (3).
5. A defrosting control method of an air conditioning system is applied to the air conditioning system as claimed in any one of claims 1 to 4, and is characterized by mainly comprising the following steps of:
When the air conditioner is detected to meet the defrosting condition, the air conditioning system is controlled to be disconnected with a pipeline of an indoor unit (3) of the air conditioner, and the air conditioning system is connected with a defrosting branch (7);
When the air conditioning system is communicated with the defrosting branch (7), the control module starts the heating module (8) to supply heat to the indoor space.
6. The control method for defrosting an air conditioning system according to claim 5, which is characterized by mainly comprising the following steps:
detecting whether the air conditioner meets defrosting conditions: judging whether the air conditioner meets defrosting conditions or not according to the continuous operation time of the air conditioner and the temperature of the outer pipe;
and (3) systematic defrosting control step: when the air conditioning system meets defrosting conditions, the control module cuts off a pipeline flowing to the indoor unit and is communicated with a defrosting branch (7); meanwhile, a heating module (8) of the indoor unit (3) of the air conditioner is started;
exiting the defrosting mode: when the continuously detected temperature of the outer pipe is smaller than the temperature threshold value, the control module cuts off the defrosting branch (7) and communicates with the pipeline of the indoor unit (3) of the air conditioner, and the heating module (8) is closed.
7. The method for controlling defrosting of an air conditioning system according to claim 6, wherein in the step of detecting whether the air conditioner meets the defrosting condition, the condition that the system meets the defrosting condition is as follows: after the heating state is continuously operated for a period of time, the continuously detected temperature of the outer pipe is less than the temperature threshold value.
8. The method for controlling defrosting of an air conditioning system according to claim 6, wherein the continuous operation time of the air conditioning system in the heating state is determined according to the last defrosting time and the current outer pipe temperature.
9. The method for controlling defrosting of an air conditioning system according to claim 8, wherein the last defrosting time is less than 5min, and when the temperature of the current outer pipe is greater than 0 ℃ and less than 5 ℃, the continuous running time of the air conditioner takes 35.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910786336.8A CN110542149A (en) | 2019-08-24 | 2019-08-24 | defrosting control method for air conditioning system and air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910786336.8A CN110542149A (en) | 2019-08-24 | 2019-08-24 | defrosting control method for air conditioning system and air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110542149A true CN110542149A (en) | 2019-12-06 |
Family
ID=68712158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910786336.8A Pending CN110542149A (en) | 2019-08-24 | 2019-08-24 | defrosting control method for air conditioning system and air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110542149A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111089394A (en) * | 2019-12-18 | 2020-05-01 | 珠海格力电器股份有限公司 | System and method for intelligently defrosting by using solar photovoltaic and air conditioner |
| CN111237930A (en) * | 2020-02-18 | 2020-06-05 | 珠海格力电器股份有限公司 | Air conditioner, control method and device thereof, storage medium and processor |
| CN112781179A (en) * | 2020-12-24 | 2021-05-11 | 珠海格力电器股份有限公司 | Air conditioner defrosting control method and system and air conditioner |
| CN113864925A (en) * | 2021-10-19 | 2021-12-31 | 广东积微科技有限公司 | Air conditioner |
| CN113915734A (en) * | 2021-09-27 | 2022-01-11 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device and air conditioner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201508077U (en) * | 2009-09-25 | 2010-06-16 | 广东美的电器股份有限公司 | Air conditioner |
| WO2011030678A1 (en) * | 2009-09-09 | 2011-03-17 | 三菱重工業株式会社 | Defrost heater control method for air conditioner |
| CN105972758A (en) * | 2016-05-19 | 2016-09-28 | 合肥美的暖通设备有限公司 | Defrosting control method and device for air conditioner and air conditioner |
| CN109631234A (en) * | 2018-11-15 | 2019-04-16 | 青岛海尔空调电子有限公司 | A kind of air-conditioner outdoor unit heating defrosting control method and system |
| CN109974203A (en) * | 2019-03-06 | 2019-07-05 | 青岛海信日立空调系统有限公司 | A kind of Defrost method and air conditioner of air conditioner |
-
2019
- 2019-08-24 CN CN201910786336.8A patent/CN110542149A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011030678A1 (en) * | 2009-09-09 | 2011-03-17 | 三菱重工業株式会社 | Defrost heater control method for air conditioner |
| CN201508077U (en) * | 2009-09-25 | 2010-06-16 | 广东美的电器股份有限公司 | Air conditioner |
| CN105972758A (en) * | 2016-05-19 | 2016-09-28 | 合肥美的暖通设备有限公司 | Defrosting control method and device for air conditioner and air conditioner |
| CN109631234A (en) * | 2018-11-15 | 2019-04-16 | 青岛海尔空调电子有限公司 | A kind of air-conditioner outdoor unit heating defrosting control method and system |
| CN109974203A (en) * | 2019-03-06 | 2019-07-05 | 青岛海信日立空调系统有限公司 | A kind of Defrost method and air conditioner of air conditioner |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111089394A (en) * | 2019-12-18 | 2020-05-01 | 珠海格力电器股份有限公司 | System and method for intelligently defrosting by using solar photovoltaic and air conditioner |
| CN111237930A (en) * | 2020-02-18 | 2020-06-05 | 珠海格力电器股份有限公司 | Air conditioner, control method and device thereof, storage medium and processor |
| CN112781179A (en) * | 2020-12-24 | 2021-05-11 | 珠海格力电器股份有限公司 | Air conditioner defrosting control method and system and air conditioner |
| CN113915734A (en) * | 2021-09-27 | 2022-01-11 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device and air conditioner |
| CN113864925A (en) * | 2021-10-19 | 2021-12-31 | 广东积微科技有限公司 | Air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106958926B (en) | Air conditioner and defrosting control method thereof | |
| CN110542149A (en) | defrosting control method for air conditioning system and air conditioning system | |
| JP4654828B2 (en) | Air conditioner | |
| CN103363601B (en) | Heat pump type air conditioner | |
| CN103363708A (en) | Heat pump type air conditioner | |
| CN103363600A (en) | Heat pump type air conditioner | |
| CN110260553B (en) | Air conditioner and control method thereof | |
| CN102226608B (en) | Air conditioner defrosting system, air conditioner and air conditioner defrosting method | |
| CN103363707B (en) | Heat pump type air conditioner | |
| CN104990321A (en) | Air conditioner and defrosting method thereof | |
| CN103363709A (en) | Heat pump type air conditioner | |
| CN112963978B (en) | Air conditioner defrosting structure, defrosting method and device thereof and air conditioner | |
| CN111692640B (en) | Air conditioner indoor unit, air conditioner and defrosting control mode of air conditioner indoor unit | |
| CN104729006A (en) | air conditioner defrosting control method and device | |
| CN110836503A (en) | Defrosting control method for air conditioner | |
| CN204787419U (en) | Air conditioner | |
| CN110595093A (en) | Air conditioning system | |
| CN202546972U (en) | Heat pump type air conditioner | |
| CN202511517U (en) | Heat pump type air conditioner | |
| CN212081578U (en) | Energy-saving air conditioner circulating system with automatic defrosting function | |
| CN114087716A (en) | Air source heat pump defrosting control system and control method | |
| CN107401851A (en) | Air conditioner system and control method for defrosting without stopping air conditioner system | |
| CN113864925A (en) | Air conditioner | |
| CN202613831U (en) | Heat pump type air conditioner | |
| CN101858632A (en) | Four-way valve defrosting backing up method of air conditioner without shutting down |
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: 20191206 |
|
| RJ01 | Rejection of invention patent application after publication |