CN106931604A - The anti-refrigerant of VRF air conditioning piles up processing method - Google Patents
The anti-refrigerant of VRF air conditioning piles up processing method Download PDFInfo
- Publication number
- CN106931604A CN106931604A CN201710202861.1A CN201710202861A CN106931604A CN 106931604 A CN106931604 A CN 106931604A CN 201710202861 A CN201710202861 A CN 201710202861A CN 106931604 A CN106931604 A CN 106931604A
- Authority
- CN
- China
- Prior art keywords
- refrigerant
- handset
- temperature
- main frame
- signal
- 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.)
- Granted
Links
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
- F24F11/62—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
-
- 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
- F24F2110/00—Control inputs relating to air properties
-
- 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
- F24F11/52—Indication arrangements, e.g. displays
-
- 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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention relates to multi-connected machine control field, disclose a kind of anti-refrigerant of VRF air conditioning and pile up processing method, carry out refrigerant accumulation treatment to multi-connected machine in multi-connected machine operation process energy.The information such as sensor, state and the control by collecting each handset of the invention, founding mathematical models, refrigerant real-time distribution situation is calculated by high-performance MCU, further control EXV output signals, refrigerant in system is piled up into the refrigerant in excessive machine to be discharged into the fewer machine of coolant quantity, because air-conditioning system is a delay system, after the operating regular hour, further detection collects operation information, judge whether refrigerant is uniform, to judge whether to also need to do further control, dynamic pressure balance is finally reached.The present invention is applied to VRF air conditioning.
Description
Technical field
The present invention relates to multi-connected machine control field, the more particularly to anti-refrigerant of VRF air conditioning piles up processing method.
Background technology
The outer machine of each module and terminal indoor set system pipeline interconnect in VRF air conditioning system, used in system
Refrigerant is shared.Simultaneously because VRF air conditioning ruuning situation is extremely complex, change various, and each outdoor module also has respectively
Complicated protection and failure is planted, or is operated in turn, so after operation a period of time, inevitably resulting in refrigerant skewness
It is even, so that each outdoor module coolant quantity is uneven.When coolant quantity occur and piling up excessive outdoor module individual operation, then
Can excessively cause system pressure too high due to refrigerant, so as to reduce whole system pressure, further cause system cooling capacity urgency
Play decay, performance reduction.
The technology that anti-refrigerant is piled up at present after multiple on-line system is shut down, is tieed up primarily directed to the control under shutdown situation
The certain apertures of the EXV (electromagnetic expanding valve) of module are held, pressure balance is automatically achieved by the pressure of refrigerant, so as to reach refrigerant
It is evenly distributed, prevents refrigerant from piling up.But there is certain defect in the method, it is impossible to control the refrigerant heap occurred in operation process
Product situation.
The content of the invention
The technical problem to be solved in the present invention is：A kind of anti-refrigerant of VRF air conditioning is provided and piles up processing method, multi-joint
Refrigerant accumulation treatment can be carried out in machine operation process to multi-connected machine.
To solve the above problems, the technical solution adopted by the present invention is：The anti-refrigerant of VRF air conditioning piles up processing method, bag
Include following steps,
Step A, each handset gather the run signal of itself, and run signal is passed into main frame, wherein, the handset bag
Include outdoor unit and indoor set；
Step B, main frame collect the run signal of each handset, and the run signal based on each handset calculates the high pressure of each handset
Pressure value, pressure saturation temperature, maximum coil temperature, minimum coil temperature, switching signal；
First temperature approach of step C, the pressure saturation temperature based on each handset and each handset of coil pipe maximum value calculation, is based on
The minimum coil temperature of each handset and the second temperature approach of each handset of outdoor environment temperature differential thermal calculation；
Step D, judge whether each handset meets anti-refrigerant and pile up control condition, wherein the anti-cold matchmaker piles up control condition
For the first temperature approach is more than or equal to the first preset temperature value and the second temperature approach is less than or equal to the second preset temperature value and high pressure
Pressure value is more than or equal to pressure preset, and control condition is piled up if handset meets anti-refrigerant, then perform step E, otherwise returns
Return step A；
Step E:Switching signal based on each handset judges the working order of each handset, if handset is not operated, then
Step F is performed, step G is otherwise performed；
Step F, main frame send EXV control signals and carry out refrigerant accumulation treatment to the handset not operated, after maintaining the T1 times,
Interval T2 times, wherein return to step A, T1 and T2 are two times of user preset；
Step G, main frame send EXV control signals and carry out at refrigerant accumulation to the handset for meeting anti-refrigerant accumulation control condition
Reason, after maintaining the T3 times, is spaced T4 times, return to step A；Wherein T3 and T4 is two other time of user preset.
Further, the main frame is an arbitrary outdoor unit in multi-connected machine, when certain outdoor unit is used as main frame, should
Outdoor unit will gather the run signal of itself, and collect.
Further, the run signal includes pressure signal, temperature signal, status signal, control signal.
Further, the communicating circuit between handset and main frame uses the communication electricity built based on MM1192 chips
Road.
The beneficial effects of the invention are as follows：The information such as sensor, state and the control by collecting each handset of the invention, build
Vertical Mathematical Modeling, refrigerant real-time distribution situation is calculated by high-performance MCU, further control EXV output signals, by system
(in the machine not operated such as) goes during the refrigerant that middle refrigerant is piled up in excessive machine is discharged into the fewer machine of coolant quantity, by
It is a delay system in air-conditioning system, after the operating regular hour, whether further detection collects operation information, judges refrigerant
Uniformly, to judge whether to also need to do further control, dynamic pressure balance is finally reached, reaches anti-refrigerant and pile up control
Purpose, greatly improves the comfort level and performance of product.Simultaneously.Give in the present invention under a kind of suitable multi-connected machine current intelligence
Anti- refrigerant pile up control condition method of discrimination, can solve to go out in the uncontrollable operation process of multi-connected machine in the prior art well
Existing refrigerant piles up situation.
Specific embodiment
Embodiment gathers the real time execution pressure of multiple on-line system using high performance pressure sensor, is sensed using NTC
The parameters such as device acquisition system coil temperature, outdoor environment temperature, controlled output object important component has EXV (electromagnetic expanding valve).
Each indoor and outdoor machine module of multiple on-line system is each equipped with pressure sensor, NTC sensor, EXV performers etc..
Embodiment uses high speed communication circuit, and the communicating circuit built based on MM1192 chips, can be by each handset (including room
Interior machine, outdoor unit) sensor signal, status signal and control signal realize being interconnected in system, it is further based on
Machine realizes that closed-loop control provides physical basis.
In this example, can be using any one outdoor unit in multiple on-line system as main frame, when certain outdoor unit is used as master
During machine, the outdoor unit will gather the run signal of itself as handset, and collect.Main frame is by collecting itself and each son
The information such as the sensor of machine, state and control, founding mathematical models calculate refrigerant real-time distribution feelings by high-performance MCU
Condition, further control EXV output signals, is discharged into the refrigerant that refrigerant in system is piled up in excessive machine coolant quantity and compares
In few machine, because air-conditioning system is a delay system, after the operating regular hour, further detection collects operation letter
Breath, judges whether refrigerant is uniform, to judge whether to also need to do further control, finally reaches dynamic pressure balance.
Specific control method is as follows：
1st, each handset (including indoor set, outdoor unit) gather itself pressure sensor, temperature sensor, status information with
And control information etc., packing is packed by high speed communication circuit and passes to main frame；
2nd, main frame collects to the information that handset is transmitted, and according to the information for collecting calculate each handset high-pressure Thp,
Pressure saturation temperature Tsat, maximum coil temperature Tcoilmax, minimum coil temperature Tcoilmin, switching signal PoweonFlag
Deng；
3rd, temperature signal Tdelta1, Tdelta2 of each handset of Framework computing, wherein, Tdelta1=Tsat-
Tcoilmax, Tdelta2=Tcoilmin-Tam, Tam are outdoor environment temperature；
4th, carry out anti-refrigerant and pile up control condition judgement, if there is the Tdelta1 of any one handset in multiple on-line system>
=Tset1 and Tdelta2<=Tset2 and Thp>=Tset3 sets up simultaneously, then meet anti-refrigerant and pile up control condition, into step
Rapid 5；Otherwise it is unsatisfactory for anti-refrigerant and piles up control condition, return to step 1；Wherein, Tset1, Tset2, Tset3 are user preset
Value；
5th, main frame passes through high speed communication circuit and constantly starts anti-refrigerant accumulation control enable signal to transmission in system.Work as master
Machine examination measures system to be needed to carry out after anti-refrigerant piles up control, then further detecting system running status, if detecting system
It is middle to there is the handset without operation, then EXV digital controlled signals are transmitted to them, after this signal maintains the T1 times, then it is spaced T2
Time, then return to whether detection refrigerant needs to carry out anti-refrigerant accumulation control；, whereas if all handsets are all in detecting system
In operation, then to the handset block transmission EXV digital controlled signals for meeting anti-refrigerant accumulation control condition, this signal maintains T3 to main frame
After time, then the T4 times are spaced, then return to whether detection refrigerant needs to carry out anti-refrigerant control.It is finally reached to whole system
The anti-refrigerant of dynamic piles up control.
General principle of the invention and main feature are the foregoing described, the description of specification is explanation original of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes and improvements
All fall within the protetion scope of the claimed invention.
Claims (4)
1. the anti-refrigerant of VRF air conditioning piles up processing method, it is characterised in that comprise the following steps,
Step A, each handset gather the run signal of itself, and run signal is passed into main frame, wherein, the handset includes room
Outer machine and indoor set；
Step B, main frame collect the run signal of each handset, and the run signal based on each handset calculates the high-pressure of each handset
Value, pressure saturation temperature, maximum coil temperature, minimum coil temperature, switching signal；
First temperature approach of step C, the pressure saturation temperature based on each handset and each handset of coil pipe maximum value calculation, based on each son
The minimum coil temperature of machine and the second temperature approach of each handset of outdoor environment temperature differential thermal calculation；
Step D, judge whether each handset meets anti-refrigerant and pile up control condition, wherein it is that the anti-cold matchmaker piles up control condition
One temperature approach is more than or equal to the first preset temperature value and the second temperature approach is less than or equal to the second preset temperature value and high-pressure
Value is more than or equal to pressure preset, and control condition is piled up if handset meets anti-refrigerant, then perform step E, otherwise returns to step
Rapid A；
Step E:Switching signal based on each handset judges the working order of each handset, if handset is not operated, then performs
Step F, otherwise performs step G；
Step F, main frame send EXV control signals and carry out refrigerant accumulation treatment to the handset not operated, after maintaining the T1 times, interval
T2 times, wherein return to step A, T1 and T2 are two times of user preset；
Step G, main frame send EXV control signals and carry out refrigerant accumulation treatment to the handset for meeting anti-refrigerant accumulation control condition,
After maintaining the T3 times, T4 times, return to step A are spaced；Wherein T3 and T4 is two other time of user preset.
2. the anti-refrigerant of VRF air conditioning as claimed in claim 1 piles up processing method, it is characterised in that the main frame is multi-joint
An arbitrary outdoor unit in machine, when certain outdoor unit is used as main frame, the outdoor unit will gather the run signal of itself, and
Collect.
3. the anti-refrigerant of VRF air conditioning as claimed in claim 2 piles up processing method, it is characterised in that the run signal bag
Include pressure signal, temperature signal, status signal, control signal.
4. the anti-refrigerant of VRF air conditioning as claimed in claim 3 piles up processing method, it is characterised in that between handset and main frame
Communicating circuit use the communicating circuit built based on MM1192 chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710202861.1A CN106931604B (en) | 2017-03-30 | 2017-03-30 | The anti-refrigerant of VRF air conditioning accumulates processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710202861.1A CN106931604B (en) | 2017-03-30 | 2017-03-30 | The anti-refrigerant of VRF air conditioning accumulates processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106931604A true CN106931604A (en) | 2017-07-07 |
| CN106931604B CN106931604B (en) | 2019-07-30 |
Family
ID=59425372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710202861.1A Active CN106931604B (en) | 2017-03-30 | 2017-03-30 | The anti-refrigerant of VRF air conditioning accumulates processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106931604B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397164A (en) * | 2020-03-31 | 2020-07-10 | 广东美的制冷设备有限公司 | Multi-split air conditioning system and control method and control device thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011122767A (en) * | 2009-12-10 | 2011-06-23 | Mitsubishi Heavy Ind Ltd | Air conditioner and method for detecting refrigerant content of air conditioner |
| CN102767886A (en) * | 2012-07-26 | 2012-11-07 | 宁波奥克斯电气有限公司 | Method for judging proper amount of refrigerants for multi-united air conditioning unit |
| CN103697559A (en) * | 2012-09-27 | 2014-04-02 | 广东美的暖通设备有限公司 | Modular multi-split air conditioner and control method for uniformly distributing refrigerant during refrigeration thereof |
| CN104566823A (en) * | 2014-12-29 | 2015-04-29 | 广东美的暖通设备有限公司 | Refrigerant control method of parallel multi-split air-conditioner |
| CN104729025A (en) * | 2015-04-09 | 2015-06-24 | 宁波奥克斯电气有限公司 | Dynamic refrigerant balance control method in refrigerating process of multi-connected air-conditioner unit |
| CN105115199A (en) * | 2015-07-06 | 2015-12-02 | 广东美的暖通设备有限公司 | VFRVV VRF air conditioning system refrigerant diversion control method and device |
| CN105588284A (en) * | 2016-01-04 | 2016-05-18 | 广东美的暖通设备有限公司 | Method and device for controlling distribution of refrigerants of indoor units of air conditioning system |
| CN106545973A (en) * | 2016-11-29 | 2017-03-29 | 广东美的暖通设备有限公司 | Multiple on-line system and its coolant quantity decision method |
-
2017
- 2017-03-30 CN CN201710202861.1A patent/CN106931604B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011122767A (en) * | 2009-12-10 | 2011-06-23 | Mitsubishi Heavy Ind Ltd | Air conditioner and method for detecting refrigerant content of air conditioner |
| CN102767886A (en) * | 2012-07-26 | 2012-11-07 | 宁波奥克斯电气有限公司 | Method for judging proper amount of refrigerants for multi-united air conditioning unit |
| CN103697559A (en) * | 2012-09-27 | 2014-04-02 | 广东美的暖通设备有限公司 | Modular multi-split air conditioner and control method for uniformly distributing refrigerant during refrigeration thereof |
| CN104566823A (en) * | 2014-12-29 | 2015-04-29 | 广东美的暖通设备有限公司 | Refrigerant control method of parallel multi-split air-conditioner |
| CN104729025A (en) * | 2015-04-09 | 2015-06-24 | 宁波奥克斯电气有限公司 | Dynamic refrigerant balance control method in refrigerating process of multi-connected air-conditioner unit |
| CN105115199A (en) * | 2015-07-06 | 2015-12-02 | 广东美的暖通设备有限公司 | VFRVV VRF air conditioning system refrigerant diversion control method and device |
| CN105588284A (en) * | 2016-01-04 | 2016-05-18 | 广东美的暖通设备有限公司 | Method and device for controlling distribution of refrigerants of indoor units of air conditioning system |
| CN106545973A (en) * | 2016-11-29 | 2017-03-29 | 广东美的暖通设备有限公司 | Multiple on-line system and its coolant quantity decision method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397164A (en) * | 2020-03-31 | 2020-07-10 | 广东美的制冷设备有限公司 | Multi-split air conditioning system and control method and control device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106931604B (en) | 2019-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105258289B (en) | Control the methods, devices and systems of compressor operating | |
| CN104566787B (en) | The energy-saving control method and control system of handpiece Water Chilling Units | |
| CN104654537B (en) | Air conditioning multi-couple machine lacks the detection method and device of fluorine | |
| CN105202712B (en) | The method and apparatus for detecting compressor operating state | |
| CN201413278Y (en) | Pipeline pressure testing device | |
| CN108536945A (en) | A kind of fault diagnosis method and system for large-scale phase modifier | |
| CN104566769B (en) | Air conditioner energy saving control method and system | |
| CN107152750A (en) | Frosting control method and device | |
| CN107092331A (en) | Cooling control method and controller for heat sink for computer | |
| CN107388489A (en) | Frequency converter temprature control method, device and PV air-conditioner | |
| CN101751018B (en) | Distributing data monitoring and prealarming system under test environment and method therefor | |
| CN107027267A (en) | Control method, device and the system of liquid cool equipment | |
| CN105138036B (en) | The temprature control method and device of a kind of integrated circuit | |
| CN105588992B (en) | The method and test device of a kind of temperature rise test of component | |
| CN106931604A (en) | The anti-refrigerant of VRF air conditioning piles up processing method | |
| CN107757584B (en) | A kind of brake control method, two-shipper multi-locomotive braking system and braking method | |
| CN107702292A (en) | A kind of method and outdoor host computer for determining multi-gang air-conditioner dynamic refrigerating capacity | |
| CN103455000B (en) | A kind of SCADA system equipment modeling method for automatically forming control logic | |
| CN106407005B (en) | A kind of concurrent process merging method and system based on multi-scale coupling | |
| CN101684962B (en) | Air conditioning ventilation automatic control system and method for single-brand air conditioner of transformer substation | |
| CN104215856B (en) | A kind of bulk power grid dynamic check method of electric energy value | |
| CN102230661B (en) | Intelligent central air-conditioning system control method for predicting lag time | |
| CN106546420A (en) | The valve body detection method of air-conditioning model machine and device, air conditioning system | |
| CN206755504U (en) | A kind of refrigerating plant room efficiency rapid detection system | |
| CN102734896B (en) | A kind of multi-online air-conditioning system running environment monitoring method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |