CN111595003A - Air conditioner detection method and device and air conditioner - Google Patents

Air conditioner detection method and device and air conditioner Download PDF

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Publication number
CN111595003A
CN111595003A CN202010472568.9A CN202010472568A CN111595003A CN 111595003 A CN111595003 A CN 111595003A CN 202010472568 A CN202010472568 A CN 202010472568A CN 111595003 A CN111595003 A CN 111595003A
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China
Prior art keywords
air conditioner
temperature difference
pipeline
indoor units
indoor
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CN202010472568.9A
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Chinese (zh)
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CN111595003B (en
Inventor
刘凯
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Midea Group Co Ltd
GD Midea Heating and Ventilating Equipment Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
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Midea Group Co Ltd
GD Midea Heating and Ventilating Equipment Co Ltd
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Priority to CN202010472568.9A priority Critical patent/CN111595003B/en
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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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
    • 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
    • F24F11/56—Remote control
    • F24F11/58—Remote control using Internet communication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—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
    • F24F11/65—Electronic processing for selecting an operating mode
    • 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

Abstract

The invention provides a detection method and a detection device of an air conditioner and the air conditioner, wherein the detection method of the air conditioner comprises the following steps: responding to a control instruction of the trial operation, controlling a plurality of indoor units to start and controlling the outdoor units to operate according to a preset operation mode; the connection condition of any pipeline in the refrigerant flow dividing device and the indoor machines is detected to obtain a detection result, whether the communication control relation among the outdoor machine, the indoor machines and the refrigerant flow dividing device is consistent with the connection relation among the refrigerant pipelines or not is determined according to the obtained detection result, so that the installation error of the air conditioner caused by improper installation operation or unfamiliar installation process in the installation process is corrected, and the operation reliability of the air conditioner is improved.

Description

Air conditioner detection method and device and air conditioner
Technical Field
The invention relates to the technical field of air conditioner control, in particular to a detection method and device of an air conditioner and the air conditioner.
Background
The central air-conditioning multi-split system is a typical heating and ventilation equipment system, and the heating and ventilation equipment system comprises an outdoor unit, a plurality of indoor units and a refrigerant splitting device connected between the outdoor unit and the indoor units, wherein the refrigerant splitting device can be used for distributing refrigerants output by the outdoor unit to the indoor units, the refrigerant splitting device can be divided into one group and multiple groups, and the refrigerant splitting device is mainly used for distinguishing the grouping number of the internal units, for example, the common refrigerant splitting device has one-to-one group, one-to-two group, one-to-four group, one-to-six group, one-to-eight group, one-to-ten group and the like, and one to twelve groups of the internal units can be respectively controlled under one refrigerant.
In the related technical scheme, the refrigerant flow dividing device needs to be connected with a plurality of indoor units, in the actual installation process, due to the fact that a system to be installed is unfamiliar, wiring is complex, and installation abnormity easily occurs, for example, the communication control relation between the outdoor unit, the indoor units and the refrigerant flow dividing device is inconsistent with the connection relation of refrigerant pipelines, and an on-site installation engineer cannot visually judge whether the communication control relation is consistent with the connection relation, so that installation errors easily occur in the installation process of the multi-split air conditioner of the central air conditioner, and the reliability of system operation is low.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, a first aspect of the present invention is to provide a detection method of an air conditioner.
In a second aspect of the present invention, a detection device for an air conditioner is provided.
A third aspect of the present invention is to provide an air conditioner.
In view of the above, according to a first aspect of the present invention, a method for detecting an air conditioner is provided, where the air conditioner includes an outdoor unit, a refrigerant flow dividing device, and a plurality of indoor units, the refrigerant flow dividing device includes at least one pipeline, and the pipeline is communicated with at least one indoor unit, where the method for detecting an air conditioner includes: responding to a control instruction of the trial operation, controlling a plurality of indoor units to start and controlling the outdoor units to operate according to a preset operation mode; and detecting the connection condition of any pipeline in the refrigerant flow dividing device and the indoor units to obtain a detection result.
In the technical scheme of the invention, after the installation of the air conditioner is finished, a trial operation process of the air conditioner is executed, specifically, a plurality of indoor units are controlled to be started, an outdoor unit operates according to a preset operation mode, the connection condition of any pipeline in a refrigerant flow dividing device and the indoor units is detected to obtain a detection result, in the process, the trial operation process is executed after the installation is finished through limitation, and whether the communication control relationship among the outdoor unit, the indoor units and the refrigerant flow dividing device is consistent with the connection relationship among the refrigerant pipelines is determined according to the obtained detection result, so that the installation error of the air conditioner caused by improper installation operation or unskilled installation process in the installation process is corrected, and the operation reliability of the air conditioner is further improved.
In addition, the detection method of the air conditioner in the above technical solution provided by the present invention may further have the following additional technical features:
in the above technical solution, the preset operation mode includes a first operation mode, the pipeline is provided with a reversing device, the reversing device is configured to switch the refrigerant inflow direction, and the connection condition between any one pipeline of the refrigerant distribution device and the plurality of indoor units is detected to obtain a detection result, which specifically includes: determining that the duration of the outdoor unit according to the first operation mode is greater than or equal to a first duration, acquiring a first heat exchanger temperature value of any indoor unit, and controlling a reversing device to reverse; delaying for a second time length to obtain a second heat exchanger temperature value of any indoor unit; taking the difference value between the temperature value of the second heat exchanger and the temperature value of the first heat exchanger as a first temperature difference value; and determining a first connection condition between the pipeline where the reversing device is located and the plurality of indoor units according to the comparison result of the first temperature difference and the first set temperature difference.
In the technical scheme, whether the indoor unit is connected to the pipeline (namely, the pipeline where the reversing device is located) can be determined by detecting the temperature change conditions of the heat exchangers of the indoor unit before and after reversing of the reversing device, specifically, the first connection conditions of the pipeline where the reversing device is located and the indoor units are determined according to the comparison result of the first temperature difference and the first set temperature difference, through the control process of the trial operation, whether the communication control relation and the connection relation of the refrigerant pipelines are consistent is tested, and the problem found by an installation engineer is conveniently processed.
The duration of the outdoor unit according to the first operation mode is determined to be longer than or equal to the first duration in a limited mode, so that the problems that the judgment of the first connection condition is abnormal and the like caused by the fact that the output refrigerant cannot influence the temperature of a heat exchanger of the indoor unit due to the fact that the operation time of the outdoor unit is too short are solved.
The temperature value of the second heat exchanger of any indoor unit is obtained by limiting the second time delay, so that the situation that the temperature change of the heat exchanger is small due to the fact that the reversing time of the reversing device is too short, the time of the refrigerant output by the outdoor unit acting on the heat exchanger of the indoor unit is too short, and further the judgment of the first connection situation of the pipeline where the reversing device is located and the indoor units is abnormal is reduced.
In any of the above technical solutions, the step of determining a first connection condition between a pipeline where the reversing device is located and the plurality of indoor units according to a comparison result between the first temperature difference and the first set temperature difference includes: determining that the first temperature difference is greater than or equal to a first set temperature difference, and connecting the indoor unit corresponding to the first temperature difference to a pipeline where the reversing device is located; and if the first temperature difference is smaller than the first set temperature difference, the indoor unit corresponding to the first temperature difference is not connected to the pipeline where the reversing device is located.
In the technical scheme, the first operation mode is a refrigeration mode or a dehumidification mode, wherein the dehumidification mode can be equivalently regarded as the refrigeration mode, when the reversing device reverses, the temperature of the heat exchanger corresponding to the indoor unit connected in the pipeline where the reversing device is located is increased from a lower temperature, so that the effect of reversing of the reversing device on the indoor unit can be determined according to whether the first temperature difference is greater than or equal to a first set temperature difference, whether the indoor unit corresponding to the first temperature difference is connected to the pipeline where the reversing device is located is further determined, and the reliability of the first connection condition between the pipeline where the reversing device is located and the indoor units is ensured by limiting the first set temperature difference.
In any of the above technical solutions, the preset operation mode includes a second operation mode, and the step of detecting a connection condition between any pipeline in the refrigerant flow dividing device and the plurality of indoor units to obtain a detection result further includes: determining that the duration of the outdoor unit in the second operation mode is greater than or equal to a third duration, acquiring a third heat exchanger temperature value of any indoor unit, and controlling the reversing device to reverse; delaying for a fourth time to obtain a fourth heat exchanger temperature value of any indoor unit; taking the difference value between the temperature value of the fourth heat exchanger and the temperature value of the third heat exchanger as a second temperature difference value; and determining a second connection condition between the pipeline where the reversing device is located and the plurality of indoor units according to the comparison result of the second temperature difference and the second set temperature difference.
In the technical scheme, whether the indoor unit is connected to the pipeline (namely the pipeline where the reversing device is located) can be determined by detecting the temperature change conditions of the heat exchangers of the indoor unit before and after the reversing of the reversing device, specifically, the second connection conditions of the pipeline where the reversing device is located and the indoor units are determined according to the comparison result of the second temperature difference and the second set temperature difference, through the control process of the trial operation, whether the communication control relation and the connection relation of the refrigerant pipelines are consistent is tested, and the problem found by an installation engineer can be conveniently processed.
The duration of the outdoor unit according to the second operation mode is determined to be longer than or equal to the third duration in a limited mode, so that the problems that the judgment of the second connection condition is abnormal and the like caused by the fact that the output refrigerant cannot influence the temperature of the heat exchanger of the indoor unit due to the fact that the operation time of the outdoor unit is too short are solved.
The temperature value of the fourth heat exchanger of any indoor unit is obtained by limiting the third time delay, so that the situation that the temperature change of the heat exchanger is small due to the fact that the reversing time of the reversing device is too short, the time of the refrigerant output by the outdoor unit acting on the heat exchanger of the indoor unit is too short, and further the judgment of the second connection situation of the pipeline where the reversing device is located and the indoor units is abnormal is reduced.
In any of the above technical solutions, the step of determining a second connection condition between the pipeline where the reversing device is located and the plurality of indoor units according to a comparison result between the second temperature difference and the second set temperature difference includes: if the second temperature difference is determined to be larger than or equal to the second set temperature difference, the indoor unit corresponding to the second temperature difference is not connected to the pipeline where the reversing device is located; and if the second temperature difference is smaller than the second set temperature difference, the indoor unit corresponding to the second temperature difference is connected to the pipeline where the reversing device is located.
In the technical scheme, the second operation mode is a heating mode, when the reversing device reverses, the temperature of the heat exchanger corresponding to the indoor unit connected in the pipeline where the reversing device is located is reduced from a higher temperature, so that the influence of reversing of the reversing device on the indoor unit can be determined according to whether the second temperature difference is greater than or equal to a second set temperature difference, whether the indoor unit corresponding to the second temperature difference is connected to the pipeline where the reversing device is located is further determined, and the reliability of the second connection condition between the pipeline where the reversing device is located and the indoor units is ensured by limiting the second set temperature difference.
In any of the above technical solutions, the method further includes: comparing the first connection condition with the second connection condition; and determining that the first connection condition is inconsistent with the second connection condition in comparison, and outputting warning information.
In the technical scheme, in order to reduce errors in the determination process of the first connection condition or the second connection condition, when the air conditioner is correctly installed, the first connection condition and the second connection condition are in one-to-one correspondence, the first connection condition and the second connection condition are compared, the detection results of the air conditioner running in different running modes are compared to verify, when the first connection condition and the second connection condition are not consistent, warning information is output, so that a user is reminded of maintaining in time, and the risk of damage of the air conditioner is reduced.
In any of the above technical solutions, the method further includes: and storing the detection results of the refrigerant flow dividing device, the indoor units and any pipeline in a correlation manner.
In the technical scheme, the detection results of the refrigerant distribution device, the indoor units and any pipeline are stored in a correlation mode, so that when the air conditioner breaks down, the air conditioner can be maintained according to the detection results of the refrigerant distribution device, the indoor units and any pipeline stored in the correlation mode, and the maintenance difficulty is reduced.
In any of the above technical solutions, the number of the refrigerant distribution devices is multiple, and the detection method of the air conditioner further includes: and determining that the detection of any refrigerant flow dividing device is finished, and outputting a plurality of detection results.
In the technical scheme, the detection of the air conditioner comprising the refrigerant flow dividing devices can be realized by judging the detection completion of any refrigerant flow dividing device and then outputting a plurality of detection results, so that the applicable scenes of the control method are increased, and the installation and configuration difficulty of the air conditioner comprising the refrigerant flow dividing devices is further reduced.
In any of the above technical solutions, the number of the outdoor units is plural.
In any of the above technical solutions, the refrigerant flow dividing device, the outdoor unit, and the plurality of indoor units communicate with each other through one data line.
In the technical scheme, the refrigerant flow dividing device, the outdoor unit and the indoor units are communicated through one data line, so that the connection difficulty of the data line during connection is reduced when the air conditioner is installed.
According to a second aspect of the present invention, there is provided a detection apparatus of an air conditioner, comprising: a memory having a computer program stored thereon; and a controller executing a computer program to implement the steps of the detection method of the air conditioner as described in any one of the above.
The present invention provides a detection device for an air conditioner, wherein a controller included in the detection device for an air conditioner executes a computer program stored in a memory of the detection device for an air conditioner to implement the steps of the detection method for an air conditioner according to any one of the above-mentioned embodiments, so that the detection device for an air conditioner has all the advantages of the detection method for an air conditioner according to any one of the above-mentioned embodiments, which are not listed herein.
According to a third aspect of the present invention, there is provided an air conditioner comprising: an outdoor unit; a refrigerant flow dividing device; a plurality of indoor units; the detection device of the air conditioner is characterized in that the detection device of the air conditioner, the outdoor unit, the refrigerant flow dividing device and the indoor units are connected.
The technical scheme of the present invention provides an air conditioner, wherein the air conditioner comprises an external unit, a refrigerant flow dividing device and a plurality of indoor units which are connected with each other, wherein a controller included in a detection device of the air conditioner executes a computer program stored in a memory of the detection device of the air conditioner to implement the steps of the detection method of the air conditioner according to any one of the above mentioned items, so that the air conditioner has all the beneficial effects of the detection method of the air conditioner provided by any one of the above mentioned technical schemes, which are not listed herein.
In the above technical solution, the detection device of the air conditioner, the outdoor unit, the refrigerant flow dividing device, and the plurality of indoor units communicate with each other through one data line.
In the technical scheme, the refrigerant flow dividing device, the outdoor unit and the indoor units are communicated through one data line, so that the connection difficulty of the data line during connection is reduced when the air conditioner is installed.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic flowchart illustrating a detection method of an air conditioner according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a detection method of an air conditioner according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a detection method of an air conditioner according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a detection method of an air conditioner according to an embodiment of the present invention;
fig. 5 is a schematic block diagram illustrating a detection apparatus of an air conditioner according to an embodiment of the present invention;
FIG. 6 illustrates a schematic block diagram of an air conditioner according to an embodiment of the present invention;
fig. 7 illustrates a connection diagram of an air conditioner according to an embodiment of the present invention;
fig. 8 illustrates a connection diagram of an air conditioner according to an embodiment of the present invention;
FIG. 9 shows a flow diagram of a refrigeration test according to an embodiment of the invention;
FIG. 10 shows a schematic flow diagram of a heating test according to one embodiment of the invention;
fig. 11 is a flowchart illustrating a detection method of an air conditioner according to an embodiment of the present invention.
Detailed Description
So that the manner in which the above recited aspects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Example one
In an embodiment of the present invention, a method for detecting an air conditioner is provided, where the air conditioner includes an outdoor unit, a refrigerant flow dividing device, and a plurality of indoor units, the refrigerant flow dividing device includes at least one pipeline, and the pipeline is communicated with at least one indoor unit, and specifically, as shown in fig. 1, the method for detecting an air conditioner includes:
step 102, responding to a control instruction of the trial operation, controlling a plurality of indoor units to start and controlling an outdoor unit to operate according to a preset operation mode;
and 104, detecting the connection condition of any pipeline in the refrigerant flow dividing device and the indoor units to obtain a detection result.
In the embodiment of the present invention, after the installation of the air conditioner is completed, a trial operation process of the air conditioner is executed, and specifically, a control instruction of the trial operation is responded, wherein the control instruction of the trial operation may be sent by an installation engineer from a mobile terminal, may be sent by a remote control device used in match with the air conditioner, may be sent by a line controller connected to any indoor unit, may be sent by a line controller connected to an outdoor unit, or is started to operate when a key integrated on the outdoor unit is triggered, a plurality of indoor units are controlled to start, the outdoor unit is controlled to operate according to a preset operation mode, and a connection condition between any pipeline in the refrigerant flow dividing device and the plurality of indoor units is detected to obtain a detection result, in the process, the flow of the trial operation is executed by limiting after the installation is completed, and the obtained detection result is used to determine the outdoor unit, Whether the communication control relation between the indoor units and the refrigerant shunting devices is consistent with the connection relation of the refrigerant pipelines or not is judged, so that the installation error of the air conditioner caused by improper installation operation or unfamiliar installation process in the installation process is corrected, and the operation reliability of the air conditioner is improved.
In any of the above embodiments, the number of the outdoor units is plural.
In any of the above embodiments, the refrigerant distribution device, the outdoor unit, and the plurality of indoor units communicate with each other through one data line.
In this embodiment, since the refrigerant distribution device, the outdoor unit, and the plurality of indoor units communicate with each other through one data line, when the air conditioner is installed, the connection difficulty in the data line connection is reduced.
Example two
In an embodiment of the present invention, a detection method for an air conditioner is provided, where the air conditioner includes an outdoor unit, a refrigerant flow dividing device, and a plurality of indoor units, the refrigerant flow dividing device includes at least one pipeline, the pipeline is communicated with at least one indoor unit, the pipeline is provided with a reversing device, and the reversing device is configured to switch a refrigerant inflow direction, and specifically, as shown in fig. 2, the detection method for an air conditioner includes:
step 202, responding to a control instruction of trial operation, controlling a plurality of indoor units to start and controlling an outdoor unit to operate according to a first operation mode;
step 204, determining that the duration of the outdoor unit according to the first operation mode is greater than or equal to a first duration, acquiring a temperature value of a first heat exchanger of any indoor unit, and controlling a reversing device to reverse;
step 206, delaying for a second time to obtain a second heat exchanger temperature value of any indoor unit;
step 208, taking the difference value between the temperature value of the second heat exchanger and the temperature value of the first heat exchanger as a first temperature difference value;
and step 210, determining a first connection condition between the pipeline where the reversing device is located and the plurality of indoor units according to a comparison result of the first temperature difference and the first set temperature difference.
In this embodiment, the reversing device is disposed on the pipeline, and before and after the reversing device reverses, the temperature of the refrigerant flowing into the indoor unit changes, for example, the refrigerant changes from a low-temperature refrigerant to a high-temperature refrigerant, and at this time, the temperature of the heat exchanger in the indoor unit also changes correspondingly, so that whether the indoor unit is connected to the pipeline (i.e., the pipeline where the reversing device is located) can be determined by detecting the temperature change before and after the reversing of the reversing device, specifically, the first connection condition between the pipeline where the reversing device is located and the plurality of indoor units can be determined according to the comparison result of the first temperature difference and the first set temperature difference, and through the control process of the trial operation, the test of whether the communication control relationship and the connection relationship of the refrigerant pipelines are consistent is realized, so that an installation engineer can conveniently deal with the found problems.
The duration of the outdoor unit according to the first operation mode is determined to be longer than or equal to the first duration in a limited mode, so that the problems that the judgment of the first connection condition is abnormal and the like caused by the fact that the output refrigerant cannot influence the temperature of a heat exchanger of the indoor unit due to the fact that the operation time of the outdoor unit is too short are solved.
The temperature value of the second heat exchanger of any indoor unit is obtained by limiting the second time delay, so that the situation that the temperature change of the heat exchanger is small due to the fact that the reversing time of the reversing device is too short, the time of the refrigerant output by the outdoor unit acting on the heat exchanger of the indoor unit is too short, and further the judgment of the first connection situation of the pipeline where the reversing device is located and the indoor units is abnormal is reduced.
In one embodiment, the first operation mode is a cooling mode or a dehumidification mode, wherein the step of determining the first connection condition between the pipeline where the reversing device is located and the indoor units according to the comparison result between the first temperature difference and the first set temperature difference specifically includes: determining that the first temperature difference is greater than or equal to a first set temperature difference, and connecting the indoor unit corresponding to the first temperature difference to a pipeline where the reversing device is located; and if the first temperature difference is smaller than the first set temperature difference, the indoor unit corresponding to the first temperature difference is not connected to the pipeline where the reversing device is located.
In this embodiment, the first operation mode is a cooling mode or a dehumidification mode, where the dehumidification mode may be equivalently regarded as the cooling mode, and when the reversing device reverses, the temperature of the heat exchanger corresponding to the indoor unit connected in the pipeline in which the reversing device is located increases from a lower temperature, so that it may be determined whether the reversing of the reversing device has an influence on the indoor unit according to whether the first temperature difference is greater than or equal to a first set temperature difference, and further it may be determined whether the indoor unit corresponding to the first temperature difference is connected to the pipeline in which the reversing device is located, and reliability of the first connection condition between the pipeline in which the reversing device is located and the plurality of indoor units is ensured by defining the first set temperature difference.
In any of the above embodiments, the number of the outdoor units is plural.
In any of the above embodiments, the refrigerant distribution device, the outdoor unit, and the plurality of indoor units communicate with each other through one data line.
In this embodiment, since the refrigerant distribution device, the outdoor unit, and the plurality of indoor units communicate with each other through one data line, when the air conditioner is installed, the connection difficulty in the data line connection is reduced.
EXAMPLE III
In an embodiment of the present invention, a detection method for an air conditioner is provided, where the air conditioner includes an outdoor unit, a refrigerant flow dividing device, and a plurality of indoor units, the refrigerant flow dividing device includes at least one pipeline, the pipeline is communicated with at least one indoor unit, the pipeline is provided with a reversing device, and the reversing device is configured to switch a refrigerant inflow direction, and specifically, as shown in fig. 3, the detection method for an air conditioner includes:
step 302, responding to a control instruction of the trial operation, controlling a plurality of indoor units to start and controlling an outdoor unit to operate according to a first operation mode;
step 304, determining that the duration of the outdoor unit in the first operation mode is greater than or equal to a first duration, acquiring a temperature value of a first heat exchanger of any indoor unit, and controlling a reversing device to reverse;
step 306, delaying for a second time to obtain a second heat exchanger temperature value of any indoor unit;
step 308, taking the difference value between the temperature value of the second heat exchanger and the temperature value of the first heat exchanger as a first temperature difference value;
step 310, determining a first connection condition between a pipeline where the reversing device is located and the plurality of indoor units according to a comparison result of the first temperature difference and the first set temperature difference;
step 312, determining that the duration of the outdoor unit according to the second operation mode is greater than or equal to a third duration, acquiring a third heat exchanger temperature value of any indoor unit, and controlling the reversing device to reverse;
step 314, delaying for a fourth time to obtain a fourth heat exchanger temperature value of any indoor unit;
step 316, taking the difference value between the temperature value of the fourth heat exchanger and the temperature value of the third heat exchanger as a second temperature difference value;
and step 318, determining a second connection condition between the pipeline where the reversing device is located and the plurality of indoor units according to the comparison result of the second temperature difference and the second set temperature difference.
In this embodiment, the reversing device is disposed on the pipeline, and before and after the reversing device reverses, the temperature of the refrigerant flowing into the indoor unit changes, such as from high temperature refrigerant to low temperature refrigerant, therefore, when the reversing device reverses, the temperature of the heat exchanger in the indoor unit changes correspondingly, therefore, whether the indoor unit is connected to the pipeline (i.e., the pipeline where the reversing device is located) can be determined by detecting the temperature change of the heat exchangers of the indoor unit before and after the reversing of the reversing device, and specifically, determining a second connection condition between the pipeline where the reversing device is located and the plurality of indoor units according to the comparison result of the second temperature difference and the second set temperature difference, through the control process of the test operation, the test of whether the communication control relation is consistent with the connection relation of the refrigerant pipeline is realized, and the problem found by an installation engineer is conveniently treated.
The duration of the outdoor unit according to the second operation mode is determined to be longer than or equal to the third duration in a limited mode, so that the problems that the judgment of the second connection condition is abnormal and the like caused by the fact that the output refrigerant cannot influence the temperature of the heat exchanger of the indoor unit due to the fact that the operation time of the outdoor unit is too short are solved.
The temperature value of the fourth heat exchanger of any indoor unit is obtained by limiting the third time delay, so that the situation that the temperature change of the heat exchanger is small due to the fact that the reversing time of the reversing device is too short, the time of the refrigerant output by the outdoor unit acting on the heat exchanger of the indoor unit is too short, and further the judgment of the second connection situation of the pipeline where the reversing device is located and the indoor units is abnormal is reduced.
In addition, an installation engineer can compare the installation condition of the air conditioner according to the first connection condition and the second connection condition to determine whether the air conditioner is installed correctly, and therefore reliability reduction of the air conditioner caused by installation errors is reduced.
In one embodiment, the second operation mode is a heating mode, and the step of determining the second connection condition between the pipeline where the reversing device is located and the plurality of indoor units according to the comparison result between the second temperature difference and the second set temperature difference specifically includes: if the second temperature difference is determined to be larger than or equal to the second set temperature difference, the indoor unit corresponding to the second temperature difference is not connected to the pipeline where the reversing device is located; and if the second temperature difference is smaller than the second set temperature difference, the indoor unit corresponding to the second temperature difference is connected to the pipeline where the reversing device is located.
In this embodiment, the second operation mode is a heating mode, and when the reversing device reverses, the temperature of the heat exchanger corresponding to the indoor unit connected to the pipeline in which the reversing device is located decreases from a higher temperature, so that it can be determined whether the reversing of the reversing device affects the indoor unit according to whether the second temperature difference is greater than or equal to the second set temperature difference, and further, whether the indoor unit corresponding to the second temperature difference is connected to the pipeline in which the reversing device is located is determined, and the reliability of the second connection condition between the pipeline in which the reversing device is located and the indoor units is ensured by defining the second set temperature difference.
In any of the above embodiments, the number of the outdoor units is plural.
In any of the above embodiments, the refrigerant distribution device, the outdoor unit, and the plurality of indoor units communicate with each other through one data line.
In this embodiment, since the refrigerant distribution device, the outdoor unit, and the plurality of indoor units communicate with each other through one data line, when the air conditioner is installed, the connection difficulty in the data line connection is reduced.
Example four
In an embodiment of the present invention, a detection method for an air conditioner is provided, where the air conditioner includes an outdoor unit, a refrigerant flow dividing device, and a plurality of indoor units, the refrigerant flow dividing device includes at least one pipeline, the pipeline is communicated with at least one indoor unit, the pipeline is provided with a reversing device, and the reversing device is configured to switch a refrigerant inflow direction, and specifically, as shown in fig. 4, the detection method for an air conditioner includes:
step 402, responding to a control instruction of the trial operation, controlling a plurality of indoor units to start and controlling an outdoor unit to operate according to a first operation mode;
step 404, determining that the duration of the outdoor unit according to the first operation mode is greater than or equal to a first duration, acquiring a temperature value of a first heat exchanger of any indoor unit, and controlling a reversing device to reverse;
step 406, delaying for a second time to obtain a second heat exchanger temperature value of any indoor unit;
step 408, taking the difference value between the temperature value of the second heat exchanger and the temperature value of the first heat exchanger as a first temperature difference value;
step 410, determining a first connection condition between a pipeline where the reversing device is located and the plurality of indoor units according to a comparison result of the first temperature difference and the first set temperature difference;
step 412, determining that the duration of the outdoor unit in the second operation mode is greater than or equal to a third duration, acquiring a temperature value of a third heat exchanger of any indoor unit, and controlling the reversing device to reverse;
step 414, delaying for a fourth time to obtain a fourth heat exchanger temperature value of any indoor unit;
step 416, taking the difference value between the temperature value of the fourth heat exchanger and the temperature value of the third heat exchanger as a second temperature difference value;
step 418, determining a second connection condition between the pipeline where the reversing device is located and the indoor units according to the comparison result of the second temperature difference and the second set temperature difference;
step 420, determining that the first connection condition is inconsistent with the second connection condition, and outputting warning information.
In the embodiment, in order to reduce errors in the determination process of the first connection condition or the second connection condition, when the air conditioner is correctly installed, the first connection condition and the second connection condition are in one-to-one correspondence, the first connection condition and the second connection condition are compared, the detection results of the air conditioner running in different running modes are compared to verify, and when the first connection condition and the second connection condition are inconsistent, warning information is output so as to timely remind a user of maintenance, so that the risk of damage to the air conditioner is reduced.
In any of the embodiments described above, the refrigerant flow dividing device, the plurality of indoor units, and the detection result of any of the pipelines are stored in association with each other.
In this embodiment, the detection results of the refrigerant flow dividing device, the plurality of indoor units and any pipeline are stored in association, so that when the air conditioner fails, the air conditioner can be maintained according to the detection results of the refrigerant flow dividing device, the plurality of indoor units and any pipeline stored in association, and the maintenance difficulty is reduced.
In any of the above embodiments, the number of the refrigerant distribution devices is multiple, and the detection method of the air conditioner further includes: and determining that the detection of any refrigerant flow dividing device is finished, and outputting a plurality of detection results.
In this embodiment, by determining that the detection of any one refrigerant flow dividing device is finished and then outputting a plurality of detection results, the air conditioner comprising the plurality of refrigerant flow dividing devices can be detected, so that the scenes to which the control method is applicable are increased, and the difficulty in installation and configuration of the air conditioner comprising the plurality of refrigerant flow dividing devices is reduced.
In any of the above embodiments, the number of the outdoor units is plural.
In any of the above embodiments, the refrigerant distribution device, the outdoor unit, and the plurality of indoor units communicate with each other through one data line.
In this embodiment, since the refrigerant distribution device, the outdoor unit, and the plurality of indoor units communicate with each other through one data line, when the air conditioner is installed, the connection difficulty in the data line connection is reduced.
EXAMPLE five
In one embodiment of the present invention, as shown in fig. 5, a detection apparatus 500 of an air conditioner is provided, including: a memory 502, the memory 502 having a computer program stored thereon; a controller 504, the controller 504 executing a computer program to implement the steps of the detection method of the air conditioner as described in any one of the above.
An embodiment of the present invention provides a detection apparatus 500 for an air conditioner, wherein a controller 504 included in the detection apparatus 500 for an air conditioner executes a computer program stored in a memory 502 of the detection apparatus 500 for an air conditioner to implement the steps of the detection method for an air conditioner according to any one of the above embodiments, so that the detection apparatus 500 for an air conditioner has all the advantages of the detection method for an air conditioner according to any one of the above embodiments, which are not listed herein.
EXAMPLE six
In one embodiment of the present invention, as shown in fig. 6, there is provided an air conditioner 600 including: an outdoor unit 602; a refrigerant flow dividing device 604; a plurality of indoor units 606; in the detection device 500 of the air conditioner, the outdoor unit 602, the refrigerant flow dividing device 604 and the indoor units 606 are connected.
An embodiment of the present invention provides an air conditioner 600, wherein the air conditioner 600 includes an outdoor unit 602, a refrigerant flow dividing device 604, and a plurality of indoor units 606, which are connected to each other, and a controller included in a detection device 500 of the air conditioner executes a computer program stored in a memory of the detection device of the air conditioner to implement the steps of the detection method of the air conditioner according to any one of the above embodiments.
In the above embodiment, the detection device 500 of the air conditioner, the outdoor unit 602, the refrigerant distribution device 604, and the indoor units 606 communicate with each other through a data line.
In this embodiment, since the refrigerant distribution device 604, the outdoor unit 602, and the indoor units 606 communicate with each other through one data line, when the air conditioner is installed, the connection difficulty of the data line connection is reduced.
In any of the above embodiments, the data line may be understood as a communication bus, where, under the framework of one communication bus, data monitoring may be performed between different nodes, for example, the outdoor unit monitors state information of nodes (such as the refrigerant flow dividing device and the indoor unit) through the communication bus, and the nodes (such as the refrigerant flow dividing device and the indoor unit) may obtain broadcast information of the outdoor unit.
In any of the above embodiments, the air conditioner is a multi-split air conditioner, such as a three-pipe multi-split air conditioner heat recovery system, wherein the outdoor unit may be understood as an outdoor unit, the indoor unit may be understood as an indoor unit, the outdoor unit is disposed outside the room, and performs information interaction with the indoor unit through a communication bus, and performs heat exchange through a refrigerant pipeline, and finally performs pure refrigeration, pure heating, and a mixed mode, wherein when the outdoor unit operates in the pure refrigeration, the indoor unit cannot perform heating, and when the outdoor unit operates in the pure heating, the indoor unit cannot perform refrigeration.
In this embodiment, the outdoor unit may be understood as a master unit in the outdoor units, wherein the master unit occupies a bus control right, and other nodes (such as slave units in the outdoor units) actively report or control between the slave units needs to gain the control right of the outdoor unit, so as to serve as the master unit.
The mixed mode is a specific operation mode of the heat recovery multi-split air conditioner system, and is divided into main refrigeration and main heating, so that the refrigeration and heating of the internal units of the same system can be realized simultaneously. Otherwise, if the indoor unit is not a heat recovery system, the indoor unit can only cool or heat at the same time, and when the mode set by the indoor unit is different from the running mode of the outdoor unit, the indoor unit can generate mode conflict warning information.
In any of the above embodiments, the refrigerant flow dividing device is a main functional module for implementing the heat recovery system, in the physical pipeline distribution, the indoor units are connected below the respective pipelines of the refrigerant flow dividing device, and the refrigerant flow dividing device controls the indoor units connected to the respective pipelines to perform cooling or heating through the reversing device located on the pipelines.
The refrigerant shunting device can be used as an identifier of the air-conditioning heat recovery system, and if the refrigerant shunting device is arranged, the heat recovery system is adopted; if the refrigerant shunting device is not provided, the heat pump system is realized. The indoor unit without the refrigerant shunting device can not realize simultaneous refrigeration and heating, and the indoor unit can not heat when the outdoor unit refrigerates; when the outer machine heats, the inner machine cannot refrigerate.
In any of the above embodiments, the reversing device may be an AB valve (such as an electromagnetic valve or an electric ball valve), for example, when the a switch and the B switch are turned off, the indoor unit connected to the pipeline cools; when the switch A and the switch B are switched on, the indoor unit connected with the pipeline heats, and it can be understood that the reversing device can control the refrigerant entering the indoor unit to be high-temperature refrigerant or low-temperature refrigerant by controlling the on and off of the switch A, B.
In any of the above embodiments, when the refrigerant flow distribution device, the outdoor unit, and the indoor units communicate with each other through one data line, the refrigerant flow distribution device is default to be used as a slave node, and in order to distinguish the refrigerant flow distribution device, the outdoor unit, and the indoor units, the refrigerant flow distribution device, the outdoor unit, and the indoor units have a unique identification code as one node, so that the refrigerant flow distribution device, the outdoor unit, and the indoor units can be searched for the slave node according to the identification code during communication.
In any of the above embodiments, the indoor unit is installed on the indoor side and has modes of cooling, heating, dehumidifying, blowing, and the like. The specific operation mode can be set according to the requirements of users, and under the general condition, only the refrigerating inner machine is needed, the outer machine can operate pure refrigeration; when only the heating inner unit exists, the outer unit can operate pure heating, and when the cooling and heating inner unit exists simultaneously, the outer unit can judge the final operation state according to the environment temperature and the inner unit state of each pipe of the refrigerant shunting device.
Usually, each internal machine has a unique address in the system, and finally, on a man-machine interaction display page, which internal machines exist under each pipe of each refrigerant flow dividing device can be displayed.
In one embodiment, the heat exchanger of the indoor unit is an evaporator, when the pipe where the indoor unit is located is refrigerating, the temperature of the evaporator is reduced, and the indoor temperature is reduced after heat exchange with indoor air is carried out; when the pipe where the internal machine is located is heating, the temperature of the evaporator can rise, and the indoor temperature rise is achieved after heat exchange with indoor air.
In one embodiment, as shown in fig. 7 and 8, the air conditioner 700 is exemplified by a multi-split heat recovery system, a multi-split heat recovery system and a multi-bus architecture diagram of an indoor Unit, wherein ODU is an Outdoor Unit; MS-0 and MS-1 … … MS-N are refrigerant shunting devices, IDU is an Indor Unit for an Indoor Unit, wherein a dotted line represents a refrigerant pipeline, and a solid line represents a communication bus.
In the embodiment, because a plurality of communication buses are adopted for connection, the communication speed is improved, and the multiple buses can be communicated in parallel; meanwhile, when the pipelines and the wiring are matched in a one-to-one mode during installation, the refrigerant shunting device can know which indoor units are connected through bus communication, but the cost rise can be brought by multiple buses, the refrigerant shunting device comprises a line body, a wiring groove, a circuit mainboard communication circuit, controller resource requirements and the like, not only is the cost consumed, but also the installation space is consumed, meanwhile, the wiring is complex, the matching of the line body and the pipelines must be ensured, otherwise, abnormal control can occur, and the basic capability requirements of personnel are still required.
In one embodiment, as shown in fig. 8, the ODU, MS-0, MS-1 … … MS-N and IDU communicate with each other via a data line, which reduces the cost of the air conditioner, and at the same time, the connection is simple, and all nodes only need to be connected to a communication bus.
In one of the embodiments, the primary implementation includes:
the first step is as follows: the air conditioner system is normally installed, the unibus is connected with all points, and the pipelines are installed and connected according to the requirements of customers.
The second step is that: after the installation is accomplished, newly-increased test run function divide into refrigeration test and heating test two kinds, uses the refrigeration test as an example earlier: after a refrigeration test is carried out, the outer machine runs pure refrigeration, all the inner machines are required to be started to have the maximum capacity, the temperature of the evaporators of the refrigerating inner machines is required to be kept at a lower temperature under normal conditions, and if the direction of a refrigerating and heating reversing device (such as an electromagnetic valve AB valve or an electric ball valve) of the refrigerant flow dividing device is switched at the moment, the temperature of the evaporators of the inner machines can be rapidly increased. Refrigerant diverging device detects obtains the evaporimeter temperature of interior machine through the communication, if the evaporimeter temperature of interior machine risees and exceeds threshold value T1 (the first settlement temperature difference in this application promptly), then judges these interior machines and manages now, so pipe one by one of refrigerant diverging device one by one realizes the valve body and switches to judge interior machine evaporimeter temperature variation, finally accomplish the detection of all pipeline interior machines.
The heating logics are the same, only the temperature changes are opposite, the temperature of the indoor unit evaporator is maintained at a high temperature during normal heating, and after the valve body of the refrigerant flow dividing device is reversed, it is determined that the temperature of the evaporator exceeds a threshold T2 (i.e., a second set temperature difference in the present application) and the pipeline is matched.
As shown in fig. 9, specifically, the flow of the refrigeration test includes:
step 902, starting pure refrigeration by an external machine, and fully starting the internal machine;
step 904, starting a single refrigerant flow dividing device for pipeline detection;
step 906, starting single pipeline detection of the refrigerant flow dividing device;
step 908, after the first time, switching the refrigerating and heating valves of the refrigerant flow dividing device, and recording the temperatures of all the internal machine evaporators;
step 910, recording the new temperatures of all the internal machine evaporators after the second time period;
step 912, judging that the delta T1 is more than or equal to A ℃, if the judgment result is yes, executing step 914, and if the judgment result is no, executing step 920;
step 914, the inner machine is under the current pipe and records;
step 916, judging that all the pipeline detection is finished, if the judgment result is yes, executing step 918, and if the judgment result is no, executing step 906;
step 918, judging that all the refrigerant shunting devices are detected completely, finishing when the judgment result is yes, and executing step 904 when the judgment result is no;
and step 920, the internal machine is not under the current pipe and is recorded.
As shown in fig. 10, specifically, the flow of the heating test includes:
step 1002, the outer machine is started to perform pure heating, and the inner machine is fully started;
step 1004, starting a single refrigerant flow dividing device for pipeline detection;
step 1006, starting single pipeline detection of the refrigerant flow dividing device;
step 1008, after a third time, switching the refrigerating and heating valves of the refrigerant flow dividing device, and recording the temperatures of all the internal machine evaporators;
step 1010, recording the new temperatures of all the internal machine evaporators after the fourth time;
step 1012, judging that delta T2 is less than or equal to-A ℃, executing step 1014 when the judgment result is yes, and executing step 1020 when the judgment result is no;
step 1014, the internal machine is under the current pipe and records;
step 1016, determining that all the pipeline detection is finished, if yes, executing step 1018, and if no, executing step 1006;
step 1018, determining that the detection of all the refrigerant flow dividing devices is finished, if the determination result is yes, ending, and if the determination result is no, executing step 1004;
in step 1020, the internal machine is not under the current pipe and is recorded.
Wherein the threshold T1 is a ℃, the threshold T2 is-a ℃, as shown in fig. 11, the detection process of the air conditioner includes:
step 1102, a refrigeration test;
step 1104, heating test;
step 1106, recording and comparing the cooling and heating test results;
step 1108, displaying the test result.
The test of refrigerating, heating under the normal implementation is accomplished to the interface accords with, then finally the normal completion of trying to run, if refrigerate, heat the test result and do not accord with, or have or not change the indoor unit, then probably the indoor unit exists to install or heat exchanger own has the problem, can produce alarm information, supplies installer to seek the problem, and finally detect again, in this technical scheme, need not artifical the settlement, has avoided the reliability problem that the manual setting mistake caused, improves user experience.
After detection is completed, the refrigerant shunting device informs the internal machines of which internal machines are under which pipe, and records the information into a storage medium, so that power failure memory is realized, and test running is not required every time.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (13)

1. The detection method of the air conditioner is characterized in that the air conditioner comprises an outdoor unit, a refrigerant flow dividing device and a plurality of indoor units, wherein the refrigerant flow dividing device comprises at least one pipeline, and the pipeline is communicated with at least one indoor unit, and the detection method of the air conditioner comprises the following steps:
responding to a control instruction of the trial operation, controlling a plurality of indoor units to start, and controlling the outdoor units to operate according to a preset operation mode;
and detecting the connection condition of any pipeline in the refrigerant flow dividing device and the indoor units to obtain a detection result.
2. The detecting method of an air conditioner according to claim 1, wherein the preset operation modes include a first operation mode, the pipeline is provided with a direction changing device configured to switch a refrigerant inflow direction,
the step of detecting the connection condition between any pipeline in the refrigerant distribution device and the plurality of indoor units to obtain a detection result specifically comprises:
determining that the duration of the outdoor unit in the first operation mode is greater than or equal to a first duration, acquiring a temperature value of a first heat exchanger of any indoor unit, and controlling the reversing device to reverse;
delaying for a second time to obtain a second heat exchanger temperature value of any indoor unit;
taking the difference value between the temperature value of the second heat exchanger and the temperature value of the first heat exchanger as a first temperature difference value;
and determining a first connection condition between the pipeline where the reversing device is located and the indoor units according to the comparison result of the first temperature difference and the first set temperature difference.
3. The detecting method of an air conditioner according to claim 2, wherein the first operation mode is a cooling mode or a dehumidifying mode,
the step of determining a first connection condition between a pipeline where the reversing device is located and the indoor units according to a comparison result of the first temperature difference and a first set temperature difference specifically includes:
if the first temperature difference is determined to be larger than or equal to a first set temperature difference, the indoor unit corresponding to the first temperature difference is connected to a pipeline where the reversing device is located;
and if the first temperature difference is determined to be smaller than the first set temperature difference, the indoor unit corresponding to the first temperature difference is not connected to the pipeline where the reversing device is located.
4. The method as claimed in claim 2 or 3, wherein the preset operation mode includes a second operation mode, and the step of detecting a connection condition between any one of the pipelines of the refrigerant distribution device and the plurality of indoor units to obtain a detection result further includes:
determining that the duration of the outdoor unit in the second operation mode is longer than or equal to a third duration, acquiring a temperature value of a third heat exchanger of any indoor unit, and controlling the reversing device to reverse;
delaying for a fourth time to obtain a fourth heat exchanger temperature value of any indoor unit;
taking the difference value between the temperature value of the fourth heat exchanger and the temperature value of the third heat exchanger as a second temperature difference value;
and determining a second connection condition between the pipeline where the reversing device is located and the indoor units according to the comparison result of the second temperature difference and a second set temperature difference.
5. The detecting method of an air conditioner according to claim 4, wherein the second operation mode is a heating mode,
the step of determining a second connection condition between the pipeline where the reversing device is located and the indoor units according to the comparison result between the second temperature difference and the second set temperature difference specifically includes:
if the second temperature difference is determined to be greater than or equal to a second set temperature difference, the indoor unit corresponding to the second temperature difference is not connected to the pipeline where the reversing device is located;
and if the second temperature difference is determined to be smaller than the second set temperature difference, the indoor unit corresponding to the second temperature difference is connected to the pipeline where the reversing device is located.
6. The detecting method of an air conditioner according to claim 4, further comprising:
comparing the first connection condition with the second connection condition;
and determining that the first connection condition is inconsistent with the second connection condition in comparison, and outputting warning information.
7. The detecting method of an air conditioner according to claim 6, further comprising:
and storing the detection results of the refrigerant flow dividing device, the indoor units and any pipeline in a correlation manner.
8. The method for detecting the air conditioner according to any one of claims 1 to 5, wherein the number of the refrigerant flow dividing devices is plural, and the method for detecting the air conditioner further comprises:
and determining that the detection of any one refrigerant flow dividing device is finished, and outputting a plurality of detection results.
9. The method as claimed in any one of claims 1 to 5, wherein the number of the outdoor units is plural.
10. The apparatus of any one of claims 1 to 5, wherein the refrigerant distribution device, the outdoor unit and the indoor units communicate with each other through a data line.
11. A detection device of an air conditioner is characterized by comprising:
a memory having a computer program stored thereon;
a controller that executes the computer program to implement the steps of the detection method of the air conditioner according to any one of claims 1 to 10.
12. An air conditioner, comprising:
an outdoor unit;
a refrigerant flow dividing device;
a plurality of indoor units;
the detecting device for an air conditioner as claimed in claim 11, wherein the detecting device for an air conditioner, the outdoor unit, the refrigerant diverging device and the plurality of indoor units are connected.
13. The air conditioner of claim 12, wherein the detection unit of the air conditioner, the outdoor unit, the refrigerant distribution unit and the indoor units communicate with each other through a data line.
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