CN102221658A - Multi-split air-conditioning indoor and outdoor unit mistaken wiring detection method - Google Patents
Multi-split air-conditioning indoor and outdoor unit mistaken wiring detection method Download PDFInfo
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Abstract
The invention discloses a multi-split air-conditioning indoor and outdoor unit mistaken wiring detection method. After a plurality of indoor units are connected with an outdoor unit, four dial codes of a dial switch SW-1 on a failure display board of the outdoor unit are simultaneously on to start a machine set and start detecting procedures; the openness of an electronic expansion valve of each indoor unit are controlled by the outdoor unit so that the openness of the electronic expansion valve of one indoor unit is larger than the openness of the electronic expansion valves of the other indoor units; the average temperature of coil sensors of each indoor unit in a period of time is measured to detect whether to satisfy judging conditions or not to judge whether the connection between the indoor units and the outdoor unit is correct or not; and the connection between each indoor unit and the outdoor unit is detected in sequence according to the way. An air-conditioning system can automatically detect whether the connection of power wires and signal wires of each system is correct or not according to the set of the dial switch without needing manual inspection.
Description
Technical field
The present invention relates to a kind of multi-split air conditioner joint detection method, especially a kind of detection method of multi-split air conditioner indoor and outdoor machine wrong wire distribution.
Background technology
Drag many air-conditionings for one, because indoor set is more, when installation is online, on the power lead of drawing from the off-premises station mainboard, the interior machine that connection can be connected to non-native system by mistake (consulting Fig. 1), connection mode A, B indoor set for wrong shown in Figure 1 mismatch, can cause the not refrigeration of starting shooting/heat abnormal occurrencies such as fault like this.Online back is because circuit, pipeline are more, checks extremely difficultly, causes very big difficulty to installation and maintenance personnel after sale.
In the prior art, if Miswire, adopt traditional inspection method, normally, at first look for corresponding indoor set from a certain system of outer machine along online pipe, the online line of this corresponding system is looked for corresponding indoor set from the outer machine mainboard then, if the indoor set that above two steps find is identical, then line is correct, otherwise, Miswire.More than operation is very difficult, especially in the place of installation environment complexity.
Application number is that 200620010260.8 Chinese patent discloses a kind of air-conditioner outdoor unit communication detection device, comprise: the signal and communication circuit, set up signal transmission pathway with the air-conditioner outdoor unit motherboard circuit, give the off-premises station motherboard circuit with the steering order data signal transmission, and receive the data-signal that the air-conditioner outdoor unit motherboard circuit sends; Processor connects described signal and communication circuit, the data-signal that the signal and communication circuit receives is resolved, and convert user's steering order to data-signal and send; Display circuit, data message and failure message that real-time video-stream processor parses.
Application number is that 200810007913.0 Chinese patent discloses a kind of detection method that is used for multi-split air conditioner, relates to the air-conditioning automation field.The method according to this invention comprises the steps: a) air-conditioning system to be switched on, and sends test massage to system controller, and test module moves automatically; B) determine that the air-conditioning system on line state is good and confirm that test signal effectively after, enter test pattern; C) enter that outer machine machine in a plurality of of air-conditioning system sends instruction so that the start of interior machine behind the test pattern; D) enter refrigeration mode and moved for first schedule time after the interior machine start; E) interior machine moves after first schedule time under refrigeration mode, jumps to heating mode and moves for second schedule time; And f) interior machine moves after second schedule time under heating mode, jumps out heating mode, and test process finishes.
Above-mentioned test is comparatively complicated, in view of this special proposition the present invention.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provide a kind of and utilize the toggle switch on the off-premises station fault display board to set, the power lead, signal wire that system detects each indoor set system automatically and off-premises station be connected whether correct detection method.
For solving the problems of the technologies described above, the present invention adopts the basic design of technical scheme to be: a kind of multi-split air conditioner indoor and outdoor machine wrong wire distribution detection method, with a plurality of indoor sets with after an off-premises station is connected, the beginning trace routine, detection method comprises the steps:
A) four dial-ups of toggle switch SW-1 on the off-premises station fault display board are put ON simultaneously, unit is opened, and off-premises station sends the refrigeration signal to indoor set;
B) indoor set is all carried out refrigeration, behind one section setting-up time t1 of standby, and the compressor start refrigeration;
C) off-premises station is controlled the aperture size of each indoor set electric expansion valve, and the aperture of electric expansion valve that makes the indoor set of winning is greater than the aperture of other indoor set electric expansion valve;
D) compressor is worked a setting-up time t2 with certain frequency H after, enter decision procedure, the aperture that keeps the first indoor set electric expansion valve, close the aperture of other indoor set electric expansion valve, at this moment, relatively first indoor set and other indoor set are at the medial temperature height of one section setting-up time t3 inner coil pipe sensor, whether satisfy following decision condition: the medial temperature of the first indoor set coil pipe sensor is lower than the medial temperature of other indoor set coil pipe sensor, relatively whether the medial temperature of all indoor set coil pipe sensors is higher than a preset value K simultaneously, to judge the situation that is connected of this first indoor set and off-premises station;
E) repeat according to above-mentioned steps c, d, the electric expansion valve of the next indoor set of regulating and controlling makes aperture greater than the aperture of other indoor set electric expansion valve, according to the method described above to judge whether the indoor and outdoor machine distribution is all correct.
Described setting-up time t1, t2, t3 and frequency H, the numerical value that preset value K is different according to different air-conditioning power settings.
All the time work with frequency H behind the described compressor start.
The aperture that off-premises station is controlled each indoor set electric expansion valve is big for the aperture of an indoor set electric expansion valve wherein, and aperture is P, and the aperture of other indoor set electric expansion valve is identical, and aperture is p, and p is 1/60 of P, and testing process aperture P remains unchanged.
The medial temperature of coil pipe sensor is the medial temperature of temperature value measured at set intervals.
After last indoor set was judged end, the aperture of controlling organic electronic expansion valve in next sensing chamber was to P, and the aperture of last indoor set electric expansion valve need be controlled to aperture p rapidly.
After detection finishes,, represent that then distribution is correct, at this moment as if the decision condition that satisfies simultaneously in the step d), fault display board charactron output numeral 0, communication pilot lamp Chang Liang, otherwise, the distribution mistake, charactron flicker output distribution failure code, and the flicker of the indoor set morse signal light of Miswire.
If the distribution mistake, readjusting distribution, if need to detect, then needing power operation, after re-powering, again according to a) to e) to carry out the wrong wire distribution inspection correct to confirm distribution for step.
After confirming that distribution is errorless, the 4-bit DIP switch of toggle switch SW-1 is all put OFF, unit enters operate as normal.
Usually t1 is in 2-5 minute scope, and t2 is in 30-120 scope second, and t3 is in 5-20 minute scope, and H is in the 30-80Hz scope, and K is the scope between-1 ℃ to-5 ℃ usually.
After adopting technique scheme, the present invention compared with prior art has following beneficial effect.
The present invention adopts parameters such as indoor set coil temperature value, blower fan, frequency, can judge automatically, fast whether multi-split air conditioner indoor and outdoor machine line is correct; Can be in order successively to a plurality of indoor set continuous detecting, need not artificial line is detected one by one, it is time saving and energy saving to install, and has reduced the workload of installation personnel significantly.
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
Description of drawings
Fig. 1 is the synoptic diagram of multi-split air conditioner indoor and outdoor machine connection error;
Fig. 2 is an off-premises station fault display board synoptic diagram of the present invention;
Fig. 3 is a multi-split air conditioner indoor set synoptic diagram of the present invention;
Fig. 4 is the correct connection diagram of multi-split air conditioner indoor and outdoor machine of the present invention;
Fig. 5 is an indoor and outdoor machine wrong wire distribution detection method process flow diagram of the present invention.
Embodiment
Shown in Fig. 2 to 4 figure, multi-split air conditioner indoor and outdoor machine wrong wire distribution detection method of the present invention, with a plurality of indoor sets with after an off-premises station is connected, the beginning trace routine, detection method comprises the steps:
A) four dial-ups 2 of toggle switch SW-1 on the off-premises station fault display board 1 are put ON simultaneously, unit is opened, and off-premises station sends the refrigeration signal to indoor set;
B) indoor set is all carried out refrigeration, behind one section setting-up time t1 of standby, and the compressor start refrigeration;
C) off-premises station is controlled the aperture size of each indoor set electric expansion valve, and the aperture of electric expansion valve that makes the indoor set of winning is greater than the aperture of other indoor set electric expansion valve;
D) compressor is worked a setting-up time t2 with certain frequency H after, enter decision procedure, the aperture that keeps the first indoor set electric expansion valve, close the aperture of other indoor set electric expansion valve, at this moment, relatively first indoor set and other indoor set are at the medial temperature height of one section setting-up time t3 inner coil pipe sensor, whether satisfy following decision condition: the medial temperature of the first indoor set coil pipe sensor is lower than the medial temperature of other indoor set coil pipe sensor, relatively whether the medial temperature of all indoor set coil pipe sensors is higher than a preset value K simultaneously, to judge the situation that is connected of this first indoor set and off-premises station;
E) repeat according to above-mentioned steps c, d, the electric expansion valve of the next indoor set of regulating and controlling makes aperture greater than the aperture of other indoor set electric expansion valve, according to the method described above to judge whether the indoor and outdoor machine distribution is all correct.
Described setting-up time t1, t2, t3 and frequency H, preset value K set different numerical value according to different air conditioners.All the time work with frequency H behind the described compressor start.
In order to realize fast detecting, t1 is in 2-5 minute scope usually, and t2 is in 30-120 scope second, and t3 is in 5-20 minute scope, and H is in the 30-80Hz scope, and K is the scope between-1 ℃ to-5 ℃ usually; Because the aperture of control electric expansion valve for unit detects safety, improves detection efficiency, compressor frequency is generally 50-60Hz, and t1 is in 3-4 minute scope, and t2 is in 60-90 scope second, t3 is in 8-12 minute scope, and K is the scope between-2 ℃ to-3 ℃ usually.
After detection finishes,, represent that then distribution is correct, at this moment as if the decision condition that satisfies simultaneously in the step d), fault display board charactron 3 output numerals 0, communication pilot lamp 4 Chang Liang, otherwise, the distribution mistake, charactron 3 flicker output distribution failure codes, and indoor set morse signal light 4 flickers of Miswire.If the distribution mistake, readjusting distribution, if need to detect, then needing power operation, after re-powering, again according to a) to e) to carry out the wrong wire distribution inspection correct to confirm distribution for step.After confirming that distribution is errorless, four dial-ups 2 of toggle switch SW-1 are all put OFF, unit enters operate as normal.
Embodiment one:
As shown in Figure 5, multi-split air conditioner of the present invention is that an off-premises station connects five indoor sets, described first indoor set is the A indoor set in the present embodiment, other four indoor sets are respectively B, C, D, E indoor set, after four dial-ups of the toggle switch SW-1 on the off-premises station detection failure display board are put ON simultaneously, unit is opened, and off-premises station sends the refrigeration signal to indoor set, and indoor set all carries out refrigerating operaton.After having passed through standby in 3 minutes, compressor start enters cooling operation, and at this moment, each electric expansion valve is not controlled by other condition, controlled by off-premises station.Outdoor machine system Fig. 3 example:
The first step: before compressor start, the host computer plate drives A indoor set electronic expansion valve opening and enters 300 pulses, and other indoor set aperture is 5 pulses, and all indoor set blower fans enter at a high speed;
Second the step: compressor start, frequency rises to 55Hz, the off-premises station rotation speed of fan according to condition as: parameters such as electronic expansion valve opening, environment temperature, compressor operating frequency are adjusted automatically, and frequency remains unchanged always.
The 3rd step: after about 60 seconds, begin to enter programmed decision at compressor start.Check the A indoor set earlier, this moment, A indoor set valve opening was 300 pulses, refrigerating capacity is arranged, other indoor set electric expansion valve is closed, therefore there is not refrigerating capacity, under the normal line situation, the coil pipe sensor temperature of A indoor set all can reduce, and the coil pipe sensor temperature of other indoor set does not have significant change.A indoor set electronic expansion valve opening keeps always and continues 10 minutes, gathered the once coil temperature data of each indoor set in back 4 minutes in 10 minutes every 1 minute, totally 4 groups of data, average, and according to following condition criterion, if mean value satisfies following condition simultaneously, then the distribution of decidable A indoor set is correct.
A all＜B is equal, C is equal, D is equal, E is equal;
A is equal, and B is equal, and C is equal, and D is equal, E all＞-2 ℃
If above condition does not satisfy simultaneously, then judge A indoor set distribution mistake, the communication pilot lamp LED_A flicker of A indoor set correspondence, i.e. first lamp flicker of communication pilot lamp 4 among Fig. 2.
The 4th step: after the A indoor set was judged end, the host computer plate drove the pulse of B indoor set electronic expansion valve opening to 300, and after B indoor set electronic expansion valve opening reached 300 pulses, A indoor set electric expansion valve need be urged to aperture 5 pulses rapidly.Equally, judge according to similar approach whether B indoor set distribution is correct.As follows:
B all＜A is equal, C is equal, D is equal, E is equal;
A is equal, and B is equal, and C is equal, and D is equal, E all＞-2 ℃
If above condition does not satisfy simultaneously, then judge B indoor set distribution mistake, the communication pilot lamp LED_B flicker of B indoor set correspondence, i.e. second of communication pilot lamp 4 lamp flicker among Fig. 2.By that analogy, judge the indoor set of other all connections, distribution is correct if condition meets, otherwise the distribution mistake, the indoor set communication pilot lamp flicker of mistake.
In wrong wire distribution trace routine operational process, the charactron on the off-premises station fault display board is with 5 seconds frequency Alternation Display running frequency and CH letter, carries out wrong wire distribution and detects operation to be illustrated in.After having judged the indoor set of last connection, compressor emergency shutdown.If the distribution mistake is arranged, then charactron output distribution failure code: EC (this code is the failure code that air conditioner industry is set, and also can otherwise show) shows with flashing mode, and the flicker of the indoor set morse signal light of Miswire.If no distribution mistake, then charactron is exported numeral 0, communication pilot lamp Chang Liang.
If distribution has problem, readjusting distribution, distribution needs power operation, re-power, if needs are arranged, it is correct to confirm distribution to carry out a wrong wire distribution inspection again, after confirming that distribution is errorless, four dial-ups 2 of SW-1 are all put OFF, unit enters normal mode of operation.
In service in the wrong wire distribution trace routine, the various normal safeguard measure that unit has is effective.
Embodiment two
Present embodiment is with the difference of the foregoing description because the power of the assembling unit is different, t1, t2, t3 and frequency H, preset value K, the electronic expansion valve opening difference set, after four dial-ups of toggle switch SW-1 are put ON simultaneously, passed through standby in 2 minutes after, compressor start enters cooling operation.
The first step: before compressor start, the host computer plate drives A indoor set electronic expansion valve opening and enters 350 pulses, and other indoor set aperture is 5 pulses, and all indoor set blower fans enter at a high speed;
Second step: compressor start, frequency rises to 65Hz, and the off-premises station rotation speed of fan is adjusted automatically according to condition, and frequency remains unchanged always.
The 3rd step: after about 90 seconds, begin to enter programmed decision at compressor start.Check the A indoor set earlier, this moment, A indoor set valve opening was 350 pulses, refrigerating capacity is arranged, other indoor set electric expansion valve is closed, therefore there is not refrigerating capacity, under the normal line situation, the coil pipe sensor temperature of A indoor set all can reduce, and the coil pipe sensor temperature of other indoor set does not have significant change; A indoor set electronic expansion valve opening keeps always and continues 8 minutes, gathered the once coil temperature data of each indoor set in back 3 minutes in 8 minutes every 30 seconds, totally 6 groups of data, average, and according to following condition criterion, if mean value satisfies following condition simultaneously, then the distribution of decidable A indoor set is correct.
A all＜B is equal, C is equal, D is equal, E is equal;
A is equal, and B is equal, and C is equal, and D is equal, E all＞-1 ℃
If above condition does not satisfy simultaneously, then judge A indoor set distribution mistake, the communication pilot lamp LED_A flicker of A indoor set correspondence.
The foregoing description only is that the preferred embodiments of the present invention are described; be not that design of the present invention and scope are limited; under the prerequisite that does not break away from design philosophy of the present invention; the various changes and modifications that the professional and technical personnel makes technical scheme of the present invention in this area all belong to protection scope of the present invention.
Claims (10)
1. multi-split air conditioner indoor and outdoor machine wrong wire distribution detection method, with a plurality of indoor sets with after an off-premises station is connected, the beginning trace routine, it is characterized in that: detection method comprises the steps:
A) four dial-ups of toggle switch SW-1 on the off-premises station fault display board are put ON simultaneously, unit is opened, and off-premises station sends the refrigeration signal to indoor set;
B) indoor set is all carried out refrigeration, behind one section setting-up time t1 of standby, and the compressor start refrigeration;
C) off-premises station is controlled the aperture size of each indoor set electric expansion valve, and the aperture of electric expansion valve that makes the indoor set of winning is greater than the aperture of other indoor set electric expansion valve;
D) compressor is worked a setting-up time t2 with certain frequency H after, enter decision procedure, the aperture that keeps the first indoor set electric expansion valve, close the aperture of other indoor set electric expansion valve, at this moment, relatively first indoor set and other indoor set are at the medial temperature height of one section setting-up time t3 inner coil pipe sensor, whether satisfy following decision condition: the medial temperature of the first indoor set coil pipe sensor is lower than the medial temperature of other indoor set coil pipe sensor, relatively whether the medial temperature of all indoor set coil pipe sensors is higher than a preset value K simultaneously, to judge the situation that is connected of this first indoor set and off-premises station;
E) repeat according to above-mentioned steps c, d, the electric expansion valve of the next indoor set of regulating and controlling makes aperture greater than the aperture of other indoor set electric expansion valve, according to the method described above to judge whether the indoor and outdoor machine distribution is all correct.
2. multi-split air conditioner indoor and outdoor machine wrong wire distribution detection method according to claim 1 is characterized in that: described setting-up time t1, t2, t3 and frequency H, the numerical value that preset value K is different according to different air-conditioning power settings.
3. multi-split air conditioner indoor and outdoor machine wrong wire distribution detection method according to claim 1 is characterized in that: work with frequency H all the time behind the described compressor start.
4. multi-split air conditioner indoor and outdoor machine wrong wire distribution detection method according to claim 1, it is characterized in that: the aperture that off-premises station is controlled each indoor set electric expansion valve is big for the aperture of an indoor set electric expansion valve wherein, aperture is P, the aperture of other indoor set electric expansion valve is identical, aperture is p, p is 1/60 of P, and testing process aperture P remains unchanged.
5. multi-split air conditioner indoor and outdoor machine wrong wire distribution detection method according to claim 1 is characterized in that: the medial temperature of coil pipe sensor is the medial temperature of temperature value measured at set intervals.
6. multi-split air conditioner indoor and outdoor machine wrong wire distribution detection method according to claim 4, it is characterized in that: after last indoor set is judged end, the aperture of controlling organic electronic expansion valve in next sensing chamber is to P, and the aperture of last indoor set electric expansion valve need be controlled to aperture p rapidly.
7. multi-split air conditioner indoor and outdoor machine wrong wire distribution detection method according to claim 1, it is characterized in that: after detection finishes, if satisfy the decision condition in the step d) simultaneously, represent that then distribution is correct, at this moment, fault display board charactron output numeral 0, communication pilot lamp Chang Liang, otherwise, the distribution mistake, charactron flicker output distribution failure code, and the flicker of the indoor set morse signal light of Miswire.
8. multi-split air conditioner indoor and outdoor machine wrong wire distribution detection method according to claim 7 is characterized in that: if the distribution mistake is being readjusted distribution, detect if need, then needing power operation, after re-powering, again according to a) to e) to carry out the wrong wire distribution inspection correct to confirm distribution for step.
9. multi-split air conditioner indoor and outdoor machine wrong wire distribution detection method according to claim 7 is characterized in that: after confirming that distribution is errorless, the 4-bit DIP switch of toggle switch SW-1 is all put OFF, unit enters operate as normal.
10. multi-split air conditioner indoor and outdoor machine wrong wire distribution detection method according to claim 1, it is characterized in that: t1 is within 2-5 minute scope, and t2 is within 30-120 scope second, and t3 is within 5-20 minute scope, H is within the 30-80Hz scope, in the scope of K between-1 ℃ to-5 ℃.
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| CN103837821A (en) * | 2012-11-27 | 2014-06-04 | 广东美的制冷设备有限公司 | Communication detecting method and system for electric current loop communication circuit |
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| CN102538139A (en) * | 2012-01-13 | 2012-07-04 | 青岛海信日立空调系统有限公司 | Communication identification system and method of indoor and outdoor units of air conditioner |
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| CN106247530A (en) * | 2016-07-29 | 2016-12-21 | 海信（山东）空调有限公司 | Many air-conditionings self checking method is dragged in many control frequency conversion one |
| CN106440198A (en) * | 2016-09-26 | 2017-02-22 | 广东美的暖通设备有限公司 | Detection method for throttle valve body of indoor unit of air conditioning system |
| CN107219412A (en) * | 2017-07-28 | 2017-09-29 | 广东美的暖通设备有限公司 | Coil line sequence detection method, device and system and the air-conditioning system of electric expansion valve |
| CN107576024A (en) * | 2017-09-27 | 2018-01-12 | 广东美的暖通设备有限公司 | Fault detection method, the apparatus and system of multi-online air-conditioning system |
| WO2020057191A1 (en) * | 2018-09-17 | 2020-03-26 | 青岛海尔空调电子有限公司 | Pipeline correlation detection method and apparatus for multi-split air conditioner, and air conditioner |
| CN110094842A (en) * | 2019-04-16 | 2019-08-06 | 青岛海尔空调电子有限公司 | Running state of air conditioner monitoring method |
| CN110094842B (en) * | 2019-04-16 | 2021-11-02 | 青岛海尔空调电子有限公司 | Air conditioner running state monitoring method |
| WO2020248764A1 (en) * | 2019-06-11 | 2020-12-17 | 青岛海尔空调电子有限公司 | Control method for air conditioning system, air conditioning control system, and air conditioning system |
| WO2021174690A1 (en) * | 2020-03-03 | 2021-09-10 | 青岛海尔空调器有限总公司 | Method and apparatus for controlling multi-split air conditioner, and air conditioner |
| CN114110910A (en) * | 2020-08-25 | 2022-03-01 | 广东美的制冷设备有限公司 | Branch box self-checking method and device, storage medium and branch box |
| CN112798983A (en) * | 2020-12-30 | 2021-05-14 | 珠海格力电器股份有限公司 | Method and device for detecting connecting line of internal and external machines |
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