CN102221658B - 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 and connect 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 so the not refrigeration of starting shooting/heat the abnormal occurrencies such as fault.More due to circuit, pipeline after online, check extremely difficultly, cause very large difficulty to installation and maintenance personnel after sale.
In 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, then the online line of this corresponding system is looked for corresponding indoor set from outer owner's plate, if the indoor set that above two steps find is identical, line is correct, otherwise, Miswire.Above operation is very difficult, especially in the place of installation environment complexity.
Application number is that 200620010260.8 Chinese patent discloses a kind of outdoor apparatus communication detection device of air conditioner, comprise: the signal and communication circuit, set up signal transmission pathway with the air-conditioner outdoor unit motherboard circuit, the steering order data-signal is transferred to the off-premises station motherboard circuit, and receives 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 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) the outer machine that enters air-conditioning system after test pattern sends instruction so that the start of interior machine to a plurality of interior machines; D) enter refrigeration mode and moved for first schedule time after interior machine start; E) after interior machine moved for first schedule time under refrigeration mode, jump to heating mode and moved for second schedule time; And f) after interior machine moved for second schedule time under heating mode, jump out heating mode, 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 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 conception 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 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, after 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, makes the aperture of electric expansion valve of the first indoor set greater than the aperture of other indoor set electric expansion valve;
d) after compressor is with certain frequency H work one setting-up time t2, 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 the 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, simultaneously relatively the medial temperature of all indoor set coil pipe sensors whether higher than a preset value K, to judge the connection 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 after described compressor start.
The aperture that off-premises station is controlled each indoor set electric expansion valve is large 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 the temperature value measured at set intervals.
After last indoor set is judged end, control the aperture of organic electronic expansion valve in next sensing chamber to P, the aperture of last indoor set electric expansion valve need to be controlled to rapidly aperture p.
Detect complete after, if satisfy simultaneously steps d) in decision condition, represent that 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.
If the distribution mistake is being readjusted distribution, if need to detect, needing power operation, after re-powering, then according to a) to e) step carries out wrong wire distribution inspection and confirms that distribution is correct.
After confirming that distribution is errorless, the 4-bit DIP switch of toggle switch SW-1 is all put OFF, unit enters normal operation.
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 the 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 significantly the workload of installation personnel.
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 schematic diagram of multi-split air conditioner indoor and outdoor machine connection error;
Fig. 2 is off-premises station fault display board schematic diagram of the present invention;
Fig. 3 is multi-split air conditioner indoor set schematic diagram of the present invention;
Fig. 4 is multi-split air conditioner indoor and outdoor machine exact connect ion schematic diagram of the present invention;
Fig. 5 is indoor and outdoor machine wrong wire distribution detection method process flow diagram of the present invention.
Embodiment
As 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 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, after 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, makes the aperture of electric expansion valve of the first indoor set greater than the aperture of other indoor set electric expansion valve;
d) after compressor is with certain frequency H work one setting-up time t2, 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 the 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, simultaneously relatively the medial temperature of all indoor set coil pipe sensors whether higher than a preset value K, to judge the connection 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 after 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; Due to the aperture of controlling electric expansion valve, for unit detects safety, improve 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.
Detect complete after, if satisfy simultaneously steps d) in decision condition, represent that distribution is correct, at this moment, 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 is being readjusted distribution, if need to detect, needing power operation, after re-powering, then according to a) to e) step carries out wrong wire distribution inspection and confirms that distribution is correct.After confirming that distribution is errorless, four dial-ups 2 of toggle switch SW-1 are all put OFF, unit enters normal operation.
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 the 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 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 step: compressor start, frequency rises to 55Hz, the off-premises station rotation speed of fan according to condition as: the parameters such as electronic expansion valve opening, environment temperature, compressor operating frequency are adjusted automatically, and frequency remains unchanged always.
The 3rd step: approximately after 60 seconds, begin to enter programmed decision at compressor start.First check the A indoor set, this moment, A indoor set valve opening was 300 pulses, refrigerating capacity is arranged, other indoor set electric expansion valve is closed, therefore without refrigerating capacity, in 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 rear 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, can judge that the distribution of 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, judge A indoor set distribution mistake, the communication pilot lamp LED_A flicker that the A indoor set is corresponding, i.e. first lamp flicker of communication pilot lamp 4 in 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 to be urged to rapidly aperture 5 pulses.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, judge B indoor set distribution mistake, the communication pilot lamp LED_B flicker that the B indoor set is corresponding, i.e. second of communication pilot lamp 4 lamp flicker in 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 off-premises station fault display board is alphabetical with frequency Alternation Display running frequency and the CH of 5 seconds, carries out wrong wire distribution detection operation to be illustrated in.After having judged the indoor set of last connection, compressor emergency shutdown.If the distribution mistake is arranged, charactron output distribution failure code: EC (this code is the failure code that air conditioner industry is set, and also can otherwise show), show with flashing mode, and the flicker of the indoor set morse signal light of Miswire.If without the distribution mistake, charactron is exported numeral 0, communication pilot lamp Chang Liang.
If distribution has problem, readjusting distribution, distribution needs power operation, re-power, if necessary, can carry out again a wrong wire distribution inspection and confirm that distribution is correct, 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, unit with various normal safeguard measure effective.
Embodiment two
The present embodiment is because the power of the assembling unit is different from the difference of above-described embodiment, t1, t2, t3 and the frequency H that sets, preset value K, electronic expansion valve opening difference, after four dial-ups of toggle switch SW-1 were put ON simultaneously, after having passed through standby in 2 minutes, compressor start entered 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: approximately after 90 seconds, begin to enter programmed decision at compressor start.First check the A indoor set, this moment, A indoor set valve opening was 350 pulses, refrigerating capacity is arranged, other indoor set electric expansion valve is closed, therefore without refrigerating capacity, in 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 rear 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, can judge that the distribution of 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, judge A indoor set distribution mistake, the communication pilot lamp LED_A flicker that the A indoor set is corresponding.
Above-described embodiment is only that the preferred embodiments of the present invention are described; be not that the spirit and scope of the present invention are limited; under the prerequisite that does not break away from design philosophy of the present invention; the various changes and modifications that in this area, the professional and technical personnel makes technical scheme of the present invention 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 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, after 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, makes the aperture of electric expansion valve of the first indoor set greater than the aperture of other indoor set electric expansion valve;
d) after compressor is with certain frequency H work one setting-up time t2, 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 the 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, the medial temperature of all indoor set coil pipe sensors is higher than preset value K simultaneously, to judge the connection of this first indoor set and off-premises station, if satisfy simultaneously above-mentioned decision condition, the expression distribution is correct, otherwise expression distribution mistake,
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 after 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 large 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 the 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, control the aperture of organic electronic expansion valve in next sensing chamber to P, the aperture of last indoor set electric expansion valve need to be controlled to rapidly aperture p.
7. multi-split air conditioner indoor and outdoor machine wrong wire distribution detection method according to claim 1 is characterized in that: detect complete after, steps d) in decision condition when representing that distribution is correct, fault display board charactron output numeral 0, communication pilot lamp Chang Liang; During 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, needing power operation, after re-powering, then according to a) to e) step carries out wrong wire distribution inspection and confirms that distribution is correct.
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 normal operation.
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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Families Citing this family (14)
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| CN102538139A (en) * | 2012-01-13 | 2012-07-04 | 青岛海信日立空调***有限公司 | Communication identification system and method of indoor and outdoor units of air conditioner |
| CN103837821B (en) * | 2012-11-27 | 2016-06-29 | 广东美的制冷设备有限公司 | The communication detecting method of a kind of current-loop communication circuit and system |
| CN104034998B (en) * | 2014-06-20 | 2017-01-18 | 珠海格力电器股份有限公司 | Diagnosis method and system for wrong connection of internal and external machine connecting wires of fixed-frequency air conditioner |
| CN104613599A (en) * | 2015-01-29 | 2015-05-13 | 广东美的制冷设备有限公司 | Method and device for judging connected relation and multi-split air conditioner |
| CN106247530B (en) * | 2016-07-29 | 2019-05-21 | 海信（山东）空调有限公司 | More air-conditioning self checking methods are dragged in multitube frequency conversion one |
| CN106440198B (en) * | 2016-09-26 | 2019-07-26 | 广东美的暖通设备有限公司 | The detection method of the throttle valve body of the 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 |
| CN110906511B (en) * | 2018-09-17 | 2021-11-02 | 青岛海尔空调电子有限公司 | Method and device for detecting corresponding relation of pipelines in multi-split air conditioner and air conditioner |
| 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 |
| CN112066515B (en) * | 2019-06-11 | 2021-11-02 | 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 |
| CN111306699A (en) * | 2020-03-03 | 2020-06-19 | 青岛海尔空调器有限总公司 | Method and device 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 |
| CN112798983B (en) * | 2020-12-30 | 2022-03-01 | 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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