CN106765931B - The control method of multi-gang air-conditioner - Google Patents
The control method of multi-gang air-conditioner Download PDFInfo
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- CN106765931B CN106765931B CN201611150226.5A CN201611150226A CN106765931B CN 106765931 B CN106765931 B CN 106765931B CN 201611150226 A CN201611150226 A CN 201611150226A CN 106765931 B CN106765931 B CN 106765931B
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- indoor unit
- heating
- control target
- outdoor
- length
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—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
- F24F2110/10—Temperature
-
- 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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
- F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
-
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1933—Suction pressures
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/195—Pressures of the condenser
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention relates to field of air conditioning, disclose a kind of control method of multi-gang air-conditioner, carry out reasonable multi-connected machine capability control according to different piping lengths.The present invention sums up are as follows: the characteristic value of acquisition outdoor unit and the characteristic value of each indoor unit first；The characteristic value for being then based on acquisition obtains the control target of outdoor mechanism cold, heating, and the control target of indoor mechanism cold, heating；According to refrigeration, the control target of heating is got, the executing agency of outdoor unit and indoor unit is controlled respectively to reach the control target of the refrigeration, heating.The present invention is suitable for connected air conditioner system.
Description
Technical field
The present invention relates to field of air conditioning, the in particular to control method of multi-gang air-conditioner.
Background technique
Within air-conditioning systems, connected machine is widely used.Because of actual requirement of engineering, multi-connected machine is answered in engineering
Piping total length in is increasingly longer, and the piping length between indoor unit is poor, difference in height is also increasing.The length of piping and
The drop of indoor and outdoor machine has larger impact for the cooling and warming performance of indoor unit, is such as unable to the length of recognitive engineering installation piping
And the piping length between indoor unit is poor, the refrigerating capacity difference that it will cause multi-line systems in different engineerings is larger, with
And the situation that different indoor unit capability difference in same engineering are larger.To sum up, because the invention one kind can identify that multi-connected machine is matched
The technology of length of tube, and can be carried out for different piping lengths in correct multi-connected machine capability control, and identification different chamber
Machine piping length difference and for the length difference carry out indoor unit capability control technology and control method with regard to very necessary.
Summary of the invention
The technical problem to be solved by the present invention is providing a kind of control method of multi-gang air-conditioner, pipe range is matched according to difference
Degree carries out reasonable multi-connected machine capability control.
To solve the above problems, the technical solution adopted by the present invention is that: the control method of multi-gang air-conditioner, including walk as follows
It is rapid:
(1) after multi-line system is installed, whole indoor units are in booting refrigeration operational state；
(2) when whole electronic expansion valve of indoor unit control heat exchanger reaches the target superheat degree of user preset, sensing chamber
Outer machine characteristic value T1 and each indoor unit characteristic value T2i, and obtain the global feature value Tm of indoor unit；
(3) the difference Td, i.e. Td=Tm-T1 of indoor unit global feature value Tm and outdoor unit characteristic value T1 are calculated；Foundation obtains
The Td obtained judges the whole piping length between indoor unit and outdoor unit: when 8 DEG C of Td >, piping length is that the preset first kind is long
Degree；When 5 DEG C≤Td <, 8 DEG C of piping lengths are preset second class length；When 3 DEG C≤Td <, 5 DEG C of piping lengths are preset the
Three classes length；
(4) select saturation temperature Tsatlp corresponding to outdoor machine system low pressure for control target when freezing, when heating
Select saturation temperature Tsathp corresponding to outdoor machine system high-pressure to control target, according to step (3) piping obtained
Length obtains the control target of outdoor mechanism cold, heating as follows: when piping length is first kind length, refrigeration control
Target Tsatlp processed is 1 DEG C, and heating control target Tsathp is 50 DEG C；When piping length is the second class length, refrigeration control
Target Tsatlp processed is 3 DEG C, and heating control target Tsathp is 48 DEG C；When piping length is third class length, refrigeration control
Target Tsatlp processed is 6 DEG C, and heating control target Tsathp is 46 DEG C；
(5) compressor rotary speed of outdoor unit is adjusted, to reach the control target of the outdoor mechanism cold, heating；
(6) difference Tdi, i.e. Tdi=T2i-T1 between each indoor unit characteristic value and outdoor unit characteristic value are calculated；To Tdi into
Row sequence obtains Tdimin and Tdimax, and each indoor unit is marked according to such as under type: for Tdimin≤Tdi <
The indoor unit of (Tdimin+ (Tdimax-Tdimin)/3) is labeled as S, that is, is piped closer away from outdoor unit；For Tdimin+
(Tdimax-Tdimin) indoor unit of/3≤Tdi < (Tdimin+ (Tdimax-Tdimin) 2/3) is labeled as M, i.e., piping is away from room
Outer machine is intermediate distance；L is labeled as the indoor unit of Tdimin+ (Tdimax-Tdimin) 2/3≤Tdi < Tdimax, that is, is matched
Pipe is more remote away from outdoor unit；
(7) the control target as a result, indoor mechanism cold, heating is marked to indoor unit according to step (6): is to label
Indoor unit, the degree of superheat of heat exchanger is TC-1 DEG C when refrigeration, and the degree of supercooling of heat exchanger is TH-2 DEG C when heating；For being labeled as
The indoor unit of M, the degree of superheat of heat exchanger is TC DEG C when refrigeration, and the degree of supercooling of heat exchanger is TH DEG C when heating；For labeled as S's
Indoor unit, the degree of superheat of heat exchanger is TC+1 DEG C when refrigeration, and the degree of supercooling of heat exchanger is TH+2 DEG C when heating；
(8) electronic expansion valve of indoor unit is adjusted, to reach the control target of the indoor mechanism cold, heating.
Specifically, the target superheat degree of user preset is greater than 1 DEG C and less than 2 DEG C in step (2).
Specifically, outdoor unit characteristic value is minimum institute in the low pressure value detected of pressure sensor on each outdoor unit
Corresponding refrigerator saturation temperature value.
Further, each indoor unit characteristic value is the heat exchanger coils temperature value of each indoor unit.
Further, the global feature value Tm of indoor unit is the maximum of T 2max in the heat exchanger coils temperature of indoor unit
With the average value of minimum value T2min, i.e. Tm=(T2min+T2max)/2.
Specifically, the first kind length is greater than 150 meters, the second class length is 100 meters, the third class length
For less than 50 meters.
Specifically, adjustment compressor of outdoor unit revolving speed is to open and close to realize by control constant speed compressor.
Further, for step (5) before adjusting compressor of outdoor unit revolving speed, each protection value of outdoor unit will be according to step
(4) refrigeration, heating control target described in are adjusted.
The beneficial effects of the present invention are: the present invention measured with the characteristic value difference of indoor and outdoor machine judge indoor and outdoor machine it
Between piping length, controlled according to different judging results outdoor unit control target it is more accurate to the interior space to realize
The matching of cooling and warming demand, and the distance to multiple indoor units apart from outdoor unit is classified, to realize to each indoor unit
The amendment of target is controlled, realizes the power balance between different indoor units.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention is done below and is further retouched in detail
It states.
In multi-connected machine convertible frequency air-conditioner debugging process, connected machine outdoor machine system is connected using X platform module, indoor unit
Number of units is Z.
(1) system setting piping recognition mode, all indoor units are opened, the operation of outdoor unit full load；Indoor set heat exchanger
The degree of superheat be all larger than 1 DEG C and less than 2 DEG C judgement systems are stablized, at this time:
Acquisition outdoor unit characteristic value is each module low pressure value, minimal pressure force value Pmin is obtained after being compared, and turn
It is changed to saturation temperature Tsatmin corresponding to refrigerator.
The heat exchanger coils temperature that each indoor unit characteristic value is indoor unit is acquired, is respectively labeled as Tei (i is 1 to Z), it is right
Tei is ranked up, and is obtained Temin and Temax, is further obtained indoor unit global feature value Tm=(Temin+Temax)/2.
(2) the difference Td=Tm-Tsatmin of indoor unit global feature value and outdoor unit characteristic value is obtained.
(3) piping length of indoor and outdoor machine is judged according to the Td obtained.8 DEG C of Td >, piping length is greater than 150 meters；5℃≤
8 DEG C of Td <, piping length is 100 meters；5 DEG C of 3 DEG C≤Td <, piping length are 50 meters；
(4) select saturation temperature Tsatlp corresponding to outdoor machine system low pressure for control target when freezing, when heating
Select saturation temperature Tsathp corresponding to outdoor machine system high-pressure to control target, according to step (3) piping obtained
Length obtains the control target of outdoor mechanism cold, heating as follows: when piping length is greater than 150 meters, refrigeration control target
Tsatlp is 1 DEG C, and heating control target Tsathp is 50 DEG C；When piping length is 100 meters, refrigeration control target Tsatlp is
3 DEG C, heating control target Tsathp is 48 DEG C；When piping length is 50 meters, refrigeration control target Tsatlp is 6 DEG C, heating
Controlling target Tsathp is 46 DEG C；
(5) each outdoor unit protection value is adjusted accordingly according to its change for controlling target；
(6) compressor rotary speed of outdoor unit is adjusted, to reach the control target of the outdoor mechanism cold, heating.Specifically
It can be opened and closed and to be realized by control constant speed compressor, to reach the control target of the outdoor mechanism cold, heating
(7) difference Tdi, i.e. Tdi=Tei-Tsatmin between each indoor unit characteristic value and outdoor unit characteristic value are calculated.
(8) Tdi is ranked up, obtains Tdimin and Tdimax, and each indoor unit is marked, and according to such as lower section
Each indoor unit is marked in formula: the indoor unit of Tdimin≤Tdi < (Tdimin+ (Tdimax-Tdimin)/3) is marked
For S, that is, it is piped closer away from outdoor unit；For Tdimin+ (Tdimax-Tdimin)/3≤Tdi < (Tdimin+ (Tdimax-
Tdimin) 2/3) indoor unit is labeled as M, i.e. piping is intermediate distance away from outdoor unit；For Tdimin+ (Tdimax-
Tdimin) indoor unit of 2/3≤Tdi < Tdimax is labeled as L, that is, is piped more remote away from outdoor unit.
(9) according to the label to indoor unit piping length as a result, the control target of indoor mechanism cold, heating: being to label
Indoor unit, the degree of superheat is TC-1 DEG C when refrigeration, and degree of supercooling is TH-2 DEG C when heating；For being labeled as the indoor unit of M, when refrigeration
The degree of superheat is TC DEG C, and degree of supercooling is TH DEG C when heating；For being labeled as the indoor unit of S, the degree of superheat is TC+1 DEG C when refrigeration, heating
When degree of supercooling be TH+2 DEG C.
(10) electronic expansion valve of indoor unit is adjusted, to reach the control target of the indoor mechanism cold, heating.
The foregoing describe basic principle of the invention and main feature, the description of specification only illustrates original of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.
Claims (8)
1. the control method of multi-gang air-conditioner, which comprises the steps of:
(1) after multi-line system is installed, whole indoor units are in booting refrigeration operational state；
(2) when whole electronic expansion valve of indoor unit control heat exchanger reaches the target superheat degree of user preset, outdoor unit is detected
Characteristic value T1 and each indoor unit characteristic value T2i, and obtain the global feature value Tm of indoor unit；
(3) the difference Td, i.e. Td=Tm-T1 of indoor unit global feature value Tm and outdoor unit characteristic value T1 are calculated；According to what is obtained
Td judges the whole piping length between indoor unit and outdoor unit: when 8 DEG C of Td >, piping length is preset first kind length；
When 5 DEG C≤Td <, 8 DEG C of piping lengths are preset second class length；When 3 DEG C≤Td <, 5 DEG C of piping lengths are preset third class
Length；
(4) select saturation temperature Tsatlp corresponding to outdoor machine system low pressure for control target when freezing, when heating selects
Saturation temperature Tsathp corresponding to outdoor machine system high-pressure is to control target, foundation step (3) piping length obtained,
The control target of outdoor mechanism cold, heating is obtained as follows: when piping length is first kind length, refrigeration control target
Tsatlp is 1 DEG C, and heating control target Tsathp is 50 DEG C；When piping length is the second class length, refrigeration control target
Tsatlp is 3 DEG C, and heating control target Tsathp is 48 DEG C；When piping length is third class length, refrigeration control target
Tsatlp is 6 DEG C, and heating control target Tsathp is 46 DEG C；
(5) compressor rotary speed of outdoor unit is adjusted, to reach the control target of the outdoor mechanism cold, heating；
(6) difference Tdi, i.e. Tdi=T2i-T1 between each indoor unit characteristic value and outdoor unit characteristic value are calculated；Tdi is arranged
Sequence obtains Tdimin and Tdimax, and each indoor unit is marked according to such as under type: for Tdimin≤Tdi <
The indoor unit of (Tdimin+ (Tdimax-Tdimin)/3) is labeled as S, that is, is piped closer away from outdoor unit；For Tdimin+
(Tdimax-Tdimin) indoor unit of/3≤Tdi < (Tdimin+ (Tdimax-Tdimin) 2/3) is labeled as M, i.e., piping is away from room
Outer machine is intermediate distance；L is labeled as the indoor unit of Tdimin+ (Tdimax-Tdimin) 2/3≤Tdi < Tdimax, that is, is matched
Pipe is more remote away from outdoor unit；
(7) the marking as a result, obtaining the control target of indoor mechanism cold, heating to indoor unit according to step (6): it is to label
Indoor unit, the degree of superheat of heat exchanger is TC-1 DEG C when refrigeration, and the degree of supercooling of heat exchanger is TH-2 DEG C when heating；For being labeled as
The indoor unit of M, the degree of superheat of heat exchanger is TC DEG C when refrigeration, and the degree of supercooling of heat exchanger is TH DEG C when heating；For labeled as S's
Indoor unit, the degree of superheat of heat exchanger is TC+1 DEG C when refrigeration, and the degree of supercooling of heat exchanger is TH+2 DEG C when heating；
(8) electronic expansion valve of indoor unit is adjusted, to reach the control target of the indoor mechanism cold, heating.
2. the control method of multi-gang air-conditioner according to claim 1, which is characterized in that user preset in step (2)
Target superheat degree is greater than 1 DEG C and less than 2 DEG C.
3. the control method of multi-gang air-conditioner according to claim 1, which is characterized in that outdoor unit characteristic value is each outdoor
Refrigerator saturation temperature value corresponding to minimum in pressure sensor low pressure value detected on machine.
4. the control method of multi-gang air-conditioner according to claim 1 or 3, which is characterized in that each indoor unit characteristic value is
The heat exchanger coils temperature value of each indoor unit.
5. the control method of multi-gang air-conditioner according to claim 4, which is characterized in that the global feature value of indoor unit is
The average value of maxima and minima in the heat exchanger coils temperature of indoor unit.
6. the control method of multi-gang air-conditioner according to claim 1, which is characterized in that the first kind length be greater than
150 meters, the second class length is 100 meters, and the third class length is 50 meters.
7. the control method of multi-gang air-conditioner according to claim 6, which is characterized in that adjustment compressor of outdoor unit revolving speed
It is to open and close to realize by control constant speed compressor.
8. the control method of multi-gang air-conditioner according to claim 1 or claim 7, which is characterized in that step (5) is outdoor in adjustment
Before machine compressor rotary speed, each protection value of outdoor unit will be adjusted according to refrigeration described in step (4), heating control target
It is whole.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108613336A (en) * | 2018-05-15 | 2018-10-02 | 青岛海尔空调电子有限公司 | It is a kind of for controlling the method and apparatus of air conditioner, air conditioner, computer readable storage medium |
| CN111623473B (en) * | 2020-06-08 | 2021-09-14 | 珠海格力电器股份有限公司 | Adaptive debugging method of air conditioner |
| CN114110994B (en) * | 2020-08-25 | 2023-04-11 | 广东美的制冷设备有限公司 | Air conditioning system throttling control method and device based on pipe length |
| CN113739337A (en) * | 2021-09-13 | 2021-12-03 | 南京天加环境科技有限公司 | Multi-split control method suitable for different pipe lengths |
| CN114198807B (en) * | 2021-11-19 | 2023-06-20 | 青岛海尔空调电子有限公司 | Self-adaptive control method and device for multi-connected air conditioning unit, air conditioning unit and medium |
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| JPH11337236A (en) * | 1998-05-29 | 1999-12-10 | Matsushita Refrig Co Ltd | Air conditioner |
| CN103162385A (en) * | 2013-04-02 | 2013-06-19 | 四川长虹电器股份有限公司 | Device and method of adjusting electronic expansion valve of refrigeration equipment |
| CN105423978A (en) * | 2015-11-23 | 2016-03-23 | 珠海格力电器股份有限公司 | Method, device and system for detecting length of engineering piping of multi-split system |
| CN106196495A (en) * | 2016-08-08 | 2016-12-07 | 珠海格力电器股份有限公司 | Control device and control method of multi-split air conditioner and multi-split air conditioner |
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2016
- 2016-12-14 CN CN201611150226.5A patent/CN106765931B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11337236A (en) * | 1998-05-29 | 1999-12-10 | Matsushita Refrig Co Ltd | Air conditioner |
| CN103162385A (en) * | 2013-04-02 | 2013-06-19 | 四川长虹电器股份有限公司 | Device and method of adjusting electronic expansion valve of refrigeration equipment |
| CN105423978A (en) * | 2015-11-23 | 2016-03-23 | 珠海格力电器股份有限公司 | Method, device and system for detecting length of engineering piping of multi-split system |
| CN106196495A (en) * | 2016-08-08 | 2016-12-07 | 珠海格力电器股份有限公司 | Control device and control method of multi-split air conditioner and multi-split air conditioner |
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