KR20150037206A - Diagnostic apparatus of air conditional and method for controlling the same - Google Patents

Abstract

The present invention relates to an air conditioner, comprising: a detector connected to a refrigerant pipe of an air conditioner for detecting a temperature of the refrigerant pipe and a temperature of the air; A controller for diagnosing the clogging of the refrigerant pipe and the suitability of the refrigerant amount based on the detected temperature; And an output unit for outputting diagnostic information corresponding to the diagnosis result.
The present invention can detect the refrigerant tube check of the air conditioner in which communication is impossible, the refrigerant restraint state, the refrigerant adequacy, and the refrigerant quantity appropriateness.
In other words, it is possible to prevent a component breakage and a safety risk by preventing the abnormal operation by detecting the state of refrigerant restraint by valve locking and cyclic high pressure restraint, and it is possible to prevent the danger of safety due to insufficient amount of refrigerant It is possible to eliminate the inconvenience cooling failure that frequently occurs in consumer use. As a result, the satisfaction level of the consumer can be increased and the reliability of the product can be increased.
In addition, in the case of an air conditioner capable of communication, it is possible to check not only the refrigerant restraint, the refrigerant adequacy, and the refrigerant amount detection but also the operation of the overall load of the air conditioner, such as misdetection of various detecting portions,

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner,

The present invention relates to an apparatus for diagnosing an air conditioner and a control method thereof for diagnosing the commissioning of an air conditioner, whether the apparatus is operating normally, operation information, clogging of a refrigerant pipe, and insufficient amount of refrigerant.

The air conditioner is a device that cools, heats, or purifies the intake air using the movement of heat generated during evaporation and condensation of the refrigerant, and discharges the air to harmonize the air in the indoor space.

For example, the air conditioner adjusts the indoor air condition to a cool air condition in the summer, adjusts the indoor air condition to a warm heating condition in winter, adjusts the indoor humidity, and controls the indoor air to a pleasant clean condition.

The air conditioner includes at least one indoor unit installed in an indoor space for discharging cold or warm air into the indoor space, and an outdoor unit connected to at least one indoor unit and supplying the refrigerant to at least one indoor unit.

The characteristics of the air conditioner include whether the components of the product, such as sensors, fans, and motors, are erroneously assembled or not, and whether the indoor / outdoor refrigerant pipe is normally connected and whether the refrigerant quantity is appropriate.

To this end, the air conditioner has a plurality of detecting units for detecting various information such as the room temperature, the indoor heat exchanger temperature, the outdoor temperature, the temperature of the outdoor heat exchanger, and the bidirectional communication function for receiving the operation control signal with the indoor unit and the outdoor unit It should include a communication unit equipped with

Accordingly, there is a problem in that it is difficult to perform the diagnosis in the case of an air conditioner having an indoor unit in which bidirectional communication is not possible if various detection units are not installed (for example, only an inflow refrigerant temperature detection unit exists in the indoor unit).

Therefore, there is a limit in that the operation information and the product abnormality can not be checked for the air conditioner which can not communicate. As a result, it is not possible to determine in advance the problem caused by the installation failure in the air conditioner which can not communicate, and this eventually became a consumer dissatisfaction factor for the product.

One aspect of the present invention provides an apparatus for diagnosing an air conditioner and a control method thereof for diagnosing whether or not a refrigerant pipe is normally connected to an indoor unit that can not communicate with an outdoor unit,

Another aspect of the present invention provides an apparatus for diagnosing an air conditioner and a control method thereof for diagnosing a result of trial operation of an indoor unit capable of communicating with an outdoor unit, whether or not a refrigerant pipe is normally connected, an appropriate refrigerant amount,

A diagnostic device for an air conditioner according to one aspect includes: a connection member connected to a refrigerant pipe of an air conditioner by an operator; A detecting unit provided on the connecting member and having a refrigerant temperature detecting unit for detecting the temperature of the refrigerant pipe and an air temperature detecting unit for detecting the temperature of the air outside the connecting member; A controller for diagnosing the clogging of the refrigerant tube and the suitability of the amount of refrigerant based on the detected temperature; And an output unit for outputting diagnostic information corresponding to the diagnosis result.

The refrigerant temperature detection unit is connected to the high pressure side refrigerant pipe and the low pressure side refrigerant pipe of the air conditioner to detect the temperature of the high pressure side refrigerant and the temperature of the low pressure side refrigerant, And detects the temperature of the space.

The detecting unit further includes a pressure detecting unit connected to the low pressure side refrigerant pipe of the air conditioner for detecting the pressure of the refrigerant, and the control unit determines the amount of refrigerant that is insufficient based on the detected pressure.

The diagnosis unit of the air conditioner further includes a communication unit for performing communication with the air conditioner. The control unit transmits a test commissioning command to the air conditioner, and receives operation information and diagnostic information from the air conditioner during commissioning of the air conditioner.

The control unit determines whether or not the normal operation of the plurality of loads of the air conditioner, the operation information of the air conditioner, whether the refrigerant pipe is normally installed, or the like, based on the operation information and the diagnosis information.

The output unit includes a display unit for displaying diagnostic information.

The output unit includes a communication unit that transmits diagnostic information to an external terminal.

The control unit controls the operation of the non-communicable air conditioner Perform diagnostics.

A control method of a diagnosis apparatus for diagnosing an air conditioner according to another aspect is characterized in that a temperature of the room air is detected and stored just before the trial operation of the air conditioner and the temperature of the room air is detected and stored through a detecting section provided on a connecting member connected to the refrigerant pipe of the air conditioner And detects the temperature and pressure of the refrigerant in the refrigerant pipe of the air conditioner at the time of trial operation of the air conditioner and detects the temperature and pressure of the refrigerant in the refrigerant pipe detected when the preset first set time elapses from the start of operation of the air conditioner Whether or not the refrigerant tube is blocked is determined based on the refrigerant temperature and the room temperature, and it is determined whether the operation time of the air conditioner has exceeded the preset second set time, If it is determined that the second set time has elapsed, it is determined whether the amount of refrigerant in the air conditioner is appropriate based on the room temperature and the refrigerant temperature, And outputs the corresponding diagnostic information.

The temperature and pressure of the refrigerant in the refrigerant tube are detected by detecting the first temperature of the high pressure side refrigerant tube of the air conditioner, detecting the second temperature of the low pressure side refrigerant tube of the air conditioner, And detecting the pressure of the side refrigerant pipe.

Diagnosis of the clogging of the refrigerant tube includes diagnosing the clogging of the refrigerant tube at the high-pressure side if the temperature on the high-pressure side of the air conditioner is higher than the room temperature.

The diagnosis of the adequacy of the refrigerant quantity includes a step of calculating a difference value between the first temperature and the second temperature and comparing the calculated difference value with the set value to diagnose whether the refrigerant amount is proper or not.

The comparison between the calculated difference value and the set value includes confirming the set value stored corresponding to the room temperature and comparing the difference value with the confirmed set value.

The diagnosis of the adequacy of the refrigerant quantity includes diagnosing that the refrigerant quantity is appropriate when the calculated difference value is larger than the set value and diagnosing that the refrigerant quantity is insufficient when the calculated difference value is equal to or lower than the set value.

The control method of the diagnostic apparatus further includes confirming an insufficient amount of refrigerant corresponding to the detected pressure when it is determined that the refrigerant amount is insufficient, and outputting the confirmed amount of refrigerant.

When the air conditioner is communicable with the air conditioner, the control method of the diagnostic apparatus transmits a test commissioning command to the air conditioner, and receives the operation information and diagnostic information from the air conditioner while the air conditioner performs the trial operation.

The outputting of the diagnostic information includes outputting diagnostic information to an external terminal connected through communication.

According to an aspect of the present invention, it is possible to perform commissioning of an air conditioner capable of communication, and furthermore, it is possible to check whether there is an abnormality in the air conditioner in which communication is impossible.

That is, when the air conditioner is communicable, it is possible to check not only the refrigerant restraint, the refrigerant adequacy, and the refrigerant amount detection but also the operation of the overall load of the air conditioner such as misdetection of various detecting portions and whether the fan or motor operates.

In addition, it is possible to check the refrigerant tube in the air conditioner in which communication is impossible, the refrigerant restricting state, the refrigerant adequacy, and the refrigerant amount appropriateness.

In other words, it is possible to prevent a component breakage and a safety risk by preventing the abnormal operation by detecting the state of refrigerant restraint by valve locking and cyclic high-pressure confinement, and the refrigerant amount It is possible to eliminate the inconvenience cooling failure that frequently occurs in consumer use. As a result, the satisfaction level of the consumer can be increased and the reliability of the product can be increased.

1 is an exemplary view of a diagnostic apparatus for diagnosing an air conditioner according to an embodiment.
2 is a cycle diagram of an air conditioner for diagnosis using a diagnostic apparatus according to an embodiment.
3 is a control configuration diagram of the air conditioner for diagnosing using the diagnostic apparatus according to the embodiment.
4 is a control configuration diagram of the diagnostic apparatus according to the embodiment.
5 is a detailed configuration diagram of a detection unit provided in the diagnostic apparatus according to the embodiment.
6 is a control configuration diagram of a terminal that performs communication with a diagnostic apparatus according to an embodiment.
7 is a control flowchart of the diagnostic apparatus according to the embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is an exemplary diagram illustrating an example of a diagnostic apparatus according to an embodiment, diagnosing an air conditioner, and outputting diagnosis information to a terminal.

The air conditioner 100 may be a stand type in which the indoor unit is installed on the floor of the indoor unit, a wall-mounted type in which the indoor unit is installed on the indoor wall, a single type having one indoor unit, or a multi type having a plurality of indoor units, At least one of the operation and the heating operation can be performed.

The air conditioner 100 has an outdoor unit installed outside the room and performing heat exchange with the outdoor air, and an indoor unit installed in the room to perform heat exchange with indoor air.

The outdoor unit includes first and second refrigerant pipes 101 and 102 connected to the indoor unit and first and second valves 101 and 102 for controlling the flow of refrigerant in the first and second refrigerant pipes 101 and 102, 103, 104).

The indoor unit is connected to the outdoor unit through a refrigerant pipe and a communication line, performs an operation based on a communication signal received through the communication line, and receives the refrigerant from the refrigerant pipe to regulate the temperature, humidity,

The air conditioner 100 performs a trial operation in response to a diagnostic command to diagnose whether the air conditioner 100 is normally installed or not at the time of initial installation, repair, or inspection.

Here, the diagnostic command is an instruction input to the input unit of the air conditioner, or an instruction received from the diagnostic device 200.

The diagnostic device 200 is connected to the outdoor unit of the air conditioner by the operator at initial installation, repair, or inspection.

The diagnostic apparatus 200 includes first and second connecting members 201 and 202 and is connected to the first and second refrigerant pipes 101 and 102 provided in the air conditioner through the connecting members 201 and 202 do.

That is, the first and second connecting members 201 and 202 of the diagnostic apparatus 200 are connected to the first and second refrigerant pipes 101 and 102 by the operator, respectively, and are connected to the first and second refrigerant pipes 101 and 102 through the first and second valves 103 and 104, Are connected to the first and second refrigerant pipes 101 and 102, respectively, and then the first and second valves 103 and 104 are opened by the operator before the start of diagnosis of the air conditioner.

The diagnostic apparatus 200 detects the temperature and pressure of the refrigerant circulating through the air conditioner at the time of trial operation of the air conditioner and diagnoses the condition of the air conditioner based on the detected temperature and pressure information.

Here, the condition of the air conditioner includes not only the refrigerant restraint, the refrigerant adequacy, and the refrigerant amount detection but also misdetection of various detecting portions and whether or not the fan and motor operate.

The diagnostic apparatus 200 outputs diagnostic information of the air conditioner. Here, the output of the diagnostic information includes displaying on the display unit of the diagnostic apparatus or transmitting to the external terminal.

In addition, the diagnostic apparatus 200 may communicate with the outdoor unit through at least one of a wired and wireless system, receive temperature and pressure information of the refrigerant from the outdoor unit, and diagnose the air conditioner based on the provided temperature and pressure information Do.

The terminal 300 executes an application program for diagnosing the air conditioner, communicates with the diagnostic device 200 through at least one of wired and wireless communication, and outputs the diagnostic information transmitted from the diagnostic device 200 .

In addition, the terminal 300 may be provided with temperature and pressure information of the refrigerant from the diagnostic device 200 and diagnose the air conditioner based on the provided temperature and pressure information.

The terminal 300 is a portable device such as a smart phone, a tablet, and a notebook.

Each of the air conditioner 100, the diagnostic apparatus 200 and the terminal 300 will be described in detail with reference to Figs. 2 to 6. Fig.

The air conditioner 100 will be described with reference to a single type air conditioner that performs a cooling operation.

As shown in Fig. 2, the single-type air conditioner includes an outdoor unit 110 and an indoor unit 120. Fig.

The outdoor unit 110 includes a compressor 111, an outdoor heat exchanger 112, an expansion valve 113 and an outdoor fan 114. The indoor unit 120 includes an indoor heat exchanger 121 and an indoor fan 122 .

When the air conditioner performs the cooling operation, the operation of each load will be described.

The compressor (111) compresses the refrigerant sucked after sucking the low-temperature low-pressure refrigerant, and discharges the compressed high-temperature and high-pressure gaseous refrigerant to the outdoor heat exchanger (112).

The compressor 111 can be implemented as a constant speed type or an inverter type.

The outdoor heat exchanger (112) is connected to a discharge port of the compressor (111) through a refrigerant pipe and condenses the refrigerant introduced from the compressor (111) through the heat discharge of the refrigerant. At this time, the gaseous refrigerant at a high temperature and high pressure is changed into a liquid refrigerant at high temperature and high pressure.

The expansion valve (113) is disposed between the outdoor heat exchanger (112) and the indoor heat exchanger (121).

The expansion valve 113 lowers the pressure and the temperature of the refrigerant introduced from the outdoor heat exchanger 112 so that the heat absorbing action by the evaporation of the refrigerant can easily occur, and then transfers the refrigerant to the indoor heat exchanger 121.

That is, the refrigerant that has passed through the expansion valve 113 changes from a high-temperature high-pressure liquid state to a low-temperature low-pressure liquid state. Here, the expansion valve may be implemented as a capillary tube.

The outdoor fan 141 is provided at one side of the outdoor heat exchanger 122 and is rotated by the motor to promote the heat radiation of the refrigerant.

The outdoor unit 110 is disposed on the suction side of the compressor 111 and separates the liquid refrigerant in the refrigerant moving from the indoor heat exchanger 121 to the compressor 111 so that the liquid refrigerant is delivered to the compressor 111 It is possible to further include an accumulator (not shown) for preventing the compressor 111 from being damaged.

The outdoor unit 110 may further include an oil separator (not shown) for separating the oil mixed in the vapor of the refrigerant discharged from the compressor 111 and returning it to the compressor 111.

The indoor heat exchanger (121) of the indoor unit (120) is disposed in the indoor space and performs heat exchange with indoor air through heat absorption by evaporation of refrigerant flowing from the expansion valve (113). At this time, the refrigerant in a liquid state at a low temperature and a low pressure is changed into a refrigerant in a gaseous state at a low temperature and a low pressure.

The indoor fan (122) is located at one side of the indoor heat exchanger (121) and forcibly blows air that has been heat-exchanged by the rotation of the motor to the indoor space.

The air conditioner further includes a plurality of refrigerant tubes. The plurality of refrigerant tubes are connected between the compressor and the outdoor heat exchanger, between the outdoor heat exchanger 112 and the expansion valve 113, between the expansion valve 113 and the indoor heat exchanger 121, And the indoor heat exchanger 121 and the compressor 111, respectively.

The outdoor unit of the air conditioner includes an outdoor driving module (130) for driving a plurality of outdoor loads (111, 113, 114) based on an inputted operation command.

The indoor unit includes a user interface (not shown) for receiving an operation command such as an operation on / off, a driving mode, and a room temperature from a user and outputting operation information of the air conditioner, And an indoor driving module (not shown) for driving the indoor load 122 based on a driving instruction inputted through a test operation command and a user interface (not shown).

3, the outdoor driving module 130 provided in the outdoor unit of the air conditioner includes an operation unit 131 for receiving a commissioning command, an outdoor control unit 132 for controlling commissioning, 113, and 114, respectively.

More specifically, the operation unit 131 receives a test run command from the operator and transmits a signal for the test run command input to the outdoor control unit 132. [

The commissioning command can be received from a remote controller or an indoor unit.

The outdoor control unit 132 controls the driving of the outdoor loads 111, 113, and 114 based on predetermined test operation information and transmits the operation control information of the indoor load 121 to the indoor drive module.

The outdoor control unit 132 stops the driving of the outdoor load and transmits a driving stop signal of the indoor load to the indoor driving module when a predetermined trial driving time elapses.

In addition, when the air conditioner is communicable, the air conditioner may further include a communication unit (not shown) for communication with the diagnostic apparatus 200.

At this time, the communication unit of the air conditioner receives the commissioning command, and transmits the pressure and temperature information of the refrigerant detected at the time of commissioning to the diagnostic apparatus 200. [

The communication unit of the air conditioner can also transmit the operation information of the outdoor unit and the indoor unit at the time of trial operation to the diagnostic device 200. [

The driving unit 133 drives the compressor 111, the expansion valve 113, and the outdoor fan 114 in response to a command from the outdoor control unit 132.

4, the diagnostic apparatus 200 includes a first input unit 210, a detection unit 220, a first control unit 230, a first display unit 240, and a first communication unit 250.

The first input unit 210 receives a command to perform a detection operation of the detection unit at the time of commissioning.

Receives a test run command from an operator, and transmits a signal for a test run command input to the first control unit 230. [

The detecting unit 220 is provided on the connecting members 201 and 202 and detects information on the refrigerant flowing between the outdoor unit and the indoor unit. Wherein the information on the refrigerant includes the temperature and pressure of the refrigerant.

The detecting unit 220 detects the temperature and the pressure of the refrigerant and transmits the detected temperature and pressure information to the first controller 230.

5, the detection unit 220 includes an air temperature detection unit 221 for detecting an air temperature, a refrigerant temperature detection unit 222 for detecting the temperature of the refrigerant flowing between the indoor unit and the outdoor unit, And a pressure detection unit 223 for detecting the pressure of the refrigerant flowing between the outdoor units.

The refrigerant temperature detection unit 220 includes a first temperature detection unit 222a provided in the first connection member 201 to detect the temperature of the high-pressure refrigerant flowing through the first refrigerant pipe 101. The second connection member 202 And a second temperature detector 222b provided in the second refrigerant pipe 102 for detecting the temperature of the low-pressure refrigerant flowing through the second refrigerant pipe 102. [

In addition, the pressure detecting unit 223 is provided on the second connecting member 202 to detect the pressure of the low-pressure refrigerant, and can be integrally formed with the second temperature detecting unit. That is, the detection unit 223 can detect the pressure and the temperature together.

Here, the temperature information can be used as information for determining whether the refrigerant tube clogging or the amount of refrigerant is proper, and the pressure information can be used as information for determining the amount of refrigerant that is insufficient.

In addition, a high-pressure refrigerant flows into the first refrigerant pipe (101) through a pipe connected to the discharge port side of the compressor, and a low-pressure refrigerant flows through the second refrigerant pipe (102) into a pipe connected to the suction port side of the compressor.

The first control unit 230 instructs the detection unit to detect the temperature and the pressure of the refrigerant pipe during the trial operation of the air conditioner that can not communicate. Based on the temperature and pressure information detected by the detection unit, the first control unit 230 determines whether the refrigerant amount is appropriate, And controls the output of diagnostic information on the determination result.

The first controller 230 communicates with the air conditioner during commissioning of the communicatable air conditioner to receive at least one of the operation information, the temperature and pressure information of the outdoor heat exchanger, and the temperature and pressure information of the indoor heat exchanger Diagnoses the condition of the air conditioner based on the information, and controls the output of the diagnostic information.

That is, the first controller 230 can check not only the refrigerant restraint, the refrigerant adequacy, and the refrigerant amount detection but also the operation of the overall load of the air conditioner, such as erroneous wiring of various detecting portions, .

Here, controlling the output of the diagnostic information includes transmitting diagnostic information to the external terminal or displaying the diagnostic information via the first display unit 240. [

The first display unit 240 displays whether the commissioning is started or ended and displays a commissioning error.

The first display unit 240 may display diagnostic information.

The first display unit 240 can display information on the clogging of the refrigerant pipe and the refrigerant amount using the light emitting diode through the lighting operation. The liquid crystal display can be used for normal installation, normal operation, It is also possible to display information on shortage or the like as characters.

The first communication unit 250 communicates with the external terminal 300 and transmits diagnostic information to the external terminal 300 when the trial operation is completed.

The first storage unit 260 stores setting information for diagnosis of the air conditioner.

That is, the first storage unit 260 stores the temperature information Td1, Td2, To, Tr, Tc1, Tc2, Tc3, and Tc4 necessary for determining the amount of refrigerant clogging, .

6, the terminal 300 includes a second input unit 310, a second communication unit 320, a second control unit 330, a second storage unit 340, and a second display unit 350 do.

The second input unit 310 receives an execution command of an application program for receiving and outputting diagnostic information from the diagnostic apparatus 200 when performing a trial operation for diagnosis of the air conditioner.

The second communication unit 320 communicates with the diagnostic device 200 when performing the trial operation for diagnosis of the air conditioner, receives the diagnostic information from the diagnostic device, and transmits the diagnostic information to the second control unit 330.

The second control unit 330 executes an application program stored in the second storage unit 340 when an application program execution command is inputted through the second input unit 310. [

The second control unit 330 controls the driving of the second display unit 350 so that the received diagnostic information is displayed when the diagnostic information transmitted from the diagnostic device 200 is received.

The second control unit 330 may also control the storage of the diagnostic information.

In addition, the second controller 330 can diagnose the condition of the air conditioner based on the transmitted temperature and pressure information when the temperature and pressure information of the indoor unit and the outdoor unit is transmitted from the diagnostic apparatus 200.

The second storage unit 340 stores an application program for diagnosing the air conditioner. Here, the application program can be implemented by an application or the like.

Also, the second storage unit 340 may store diagnostic information of the air conditioner.

The second display unit 350 displays the diagnostic information of the air conditioner in response to the command of the second control unit 330. [

The configuration for diagnosing the air conditioner using the diagnostic apparatus and the terminal thus configured will be briefly described. In addition, a description will be given of a configuration for diagnosing an air conditioner that can not communicate and an air conditioner that can communicate with the air conditioner.

First, the case of diagnosing an air conditioner which can not communicate using a diagnostic device and a terminal will be briefly described.

An incommunicable air conditioner includes a constant speed compressor that maintains the rated capacity at 100% during operation. Such an air conditioner operates the compressor until the room temperature reaches the target temperature, and stops the operation of the compressor when the room temperature becomes lower than the target temperature. Such an air conditioner does not require a separate communication function since the compressor is turned on or off based on the room temperature.

The air conditioner receives a test commissioning command through a user interface provided in an operation unit, a remote controller, or an indoor unit provided in the outdoor unit while the diagnostic apparatus 200 is connected to the outdoor unit, and performs the trial operation.

That is, the air conditioner makes the maximum wind operation in the normal cooling mode during the trial operation, and checks the abnormality such as the refrigerant amount and the clogging of the pipe through the diagnostic device 200 during the operation.

Performing the trial run includes driving the compressor for a predetermined time and rotating the outdoor fan and the indoor fan at a predetermined rotational speed.

The diagnostic apparatus 200 detects the temperature of the room before the trial operation of the air conditioner and determines the temperature of the refrigerant flowing in the first refrigerant pipe on the high pressure side and the temperature of the refrigerant flowing in the second refrigerant pipe on the low pressure side during the trial operation of the air conditioner And the pressure is detected. Based on the detected room temperature, the refrigerant temperature of the first refrigerant pipe, the refrigerant temperature of the second refrigerant pipe, and the refrigerant pressure of the second refrigerant pipe, the clogging of the refrigerant pipe, the refrigerant amount insufficient, And transmits the diagnostic information to the terminal 300.

The terminal 300 prepares to receive diagnostic information transmitted from the diagnostic device 200 by executing an application program upon trial operation of the air conditioner and displays the transmitted diagnostic information when the diagnostic information is transmitted from the diagnostic device 200 do. In addition, the terminal 300 may store diagnostic information.

The following description will briefly explain the case of diagnosing an air conditioner capable of communicating using the following diagnosis apparatus and terminal.

The communicable air conditioner includes an inverter type compressor, performs bidirectional communication between the outdoor unit and the indoor unit, and adjusts the operating capability of the compressor based on indoor information and outdoor information of the indoor unit.

Herein, the indoor information includes the indoor temperature, the inlet and outlet temperature and pressure of the indoor heat exchanger, the number of revolutions of the indoor fan, and the outdoor information includes the outdoor temperature, the inlet and outlet temperature and pressure of the outdoor heat exchanger, And the like. It is also possible that the outdoor information further includes the temperature and the pressure of the inlet and outlet of the compressor.

The outdoor unit of the air conditioner drives a compressor, an outdoor fan, and the like during a preset commissioning time period, and transmits a driving signal of an indoor fan or the like to an indoor driving module of the indoor unit when a test commissioning command transmitted from a diagnostic device is received. The outdoor driving module of the outdoor unit receives the operation information of the indoor fan, the detection information of various detection units installed in the indoor unit, and the like from the indoor drive module at the time of trial operation, and transmits the received information to the diagnostic device.

When the air conditioner is capable of both cooling and heating, the outdoor module switches and controls the flow path of the four-way valve.

The diagnosis apparatus 200 transmits a test commissioning command for diagnosis to the air conditioner, communicates with the outdoor unit at the time of trial operation of the air conditioner, receives the indoor information and the outdoor information, Whether or not the air conditioner is normally installed, whether the air conditioner is normally operated, whether the refrigerant pipe is blocked, whether the refrigerant amount is insufficient, and transmits diagnostic information to the terminal 300.

More specifically, it controls the operation of the indoor fan of the indoor unit during the trial operation of the air conditioner, diagnoses the installation state and operation state of various loads in the outdoor unit and the indoor unit, and then controls the operation of the compressor of the outdoor unit, Diagnose if normal refrigerant flow is occurring.

Here, the diagnosis of the installation state of the loads can be made by checking the responses that may occur when the loads are normally installed.

It is also possible to diagnose whether or not the piping connection between the outdoor unit and the indoor unit is normally performed based on the operation results of the indoor fan and the compressor, and also to diagnose whether the indoor unit is normally supplied with the required amount of refrigerant.

The commissioning command can be input through an operation unit of the outdoor unit, a user interface of the indoor unit, or a remote controller.

The terminal 300 executes an application program at the time of commissioning of the air conditioner and prepares to receive diagnostic information and operation information transmitted from the diagnostic device 200. When diagnostic information is transmitted from the diagnostic device 200, Information and driving information. The terminal 300 may also store diagnostic information.

When diagnosing an air conditioner capable of communicating with the terminal 300, it is also possible to transmit a test commissioning command signal to a diagnostic device through wireless communication such as Wi-Fi via an application program. At this time, the diagnostic apparatus 200 transmits a test run command signal to the air conditioner through the communication unit.

When diagnosing the multi-type air conditioner using the diagnosis device and the terminal, it is also possible to divide the indoor unit into a plurality of indoor units capable of communicating with each other and an indoor unit incommunicable with the indoor unit. In addition, indoor units that can communicate with each other can be diagnosed.

7 is a flowchart showing a diagnosis control method of the air conditioner according to the embodiment.

The method of diagnosing the air conditioner which can not communicate is explained.

First, the operator uses the air temperature detector provided in the diagnostic apparatus 200 to detect the temperature of the room air and outdoor air, and stores the detected outdoor temperature and room temperature.

The operator attaches the first connecting member 201 provided with the first refrigerant temperature detecting portion 222a of the diagnostic apparatus 200 to the first refrigerant tube 101 and the second refrigerant temperature detecting portion 222b and the pressure detecting portion And the second connection member 202 having the second connection member 223 is connected to the second refrigerant pipe 102.

That is, connecting the second connection member provided with the pressure detection unit to the second refrigerant pipe includes connecting the pressure detection unit to the low-pressure service port unit of the outdoor unit.

The next operator inputs the maximum wind operation of the general cooling mode in the air conditioner.

The diagnostic apparatus 200 performs a diagnostic mode (401) when power is input to the diagnostic apparatus 200 and a command for entering a test run is made. At this time, the diagnostic apparatus causes the detection operation to be performed by applying power to various detection units.

The diagnostic apparatus 200 detects the temperature of the refrigerant on the high pressure side while detecting the temperature and pressure of the refrigerant on the low pressure side and stores the detected information while the air conditioner performs the trial operation.

The diagnostic apparatus 200 diagnoses the clogging of the refrigerant tube and the adequacy of the refrigerant amount based on the temperature and pressure information of the refrigerant detected while the air conditioner performs the trial operation. This will be explained in detail.

The diagnostic apparatus determines whether the time when the diagnostic mode is performed, that is, the compressor operation time of the air conditioner, has exceeded a preset first set time (step 403).

In addition, when diagnosing a communicable air conditioner, the diagnostic apparatus transmits an operation signal to various loads between the start time of the compressor operation of the air conditioner and the first set time, and the operation of various loads It is possible to diagnose the condition. Here, the first set time is a time before the superheat degree is judged.

The diagnosis device determines that the operation time of the compressor has exceeded the first predetermined time, the first temperature (To) detected by the first temperature detector on the side of the high-pressure refrigerant pipe at the time when the operation time of the compressor exceeds the first predetermined time, And the second temperature (Ti) detected by the second temperature detector on the low-pressure refrigerant pipe side is checked. Here, the temperature on the side of the high-pressure refrigerant pipe is the temperature for the refrigerant discharged from the compressor.

The diagnostic apparatus compares 404 the detected first temperature To with the room temperature Tr 404 and diagnoses whether the high-pressure side refrigerant tube is clogged based on the comparison result.

This is to determine whether the required amount of refrigerant is normally supplied to the indoor unit by comparing the difference between the room temperature Tr before the compressor operation and the high-pressure refrigerant pipe.

The comparison between the detected first temperature To and the room temperature Tr is made by comparing an absolute value obtained by subtracting the first temperature To detected at the room temperature Tr from a preset first set value Tc1 Includes comparing small ones.

Also, comparing the detected first temperature To and the room temperature Tr includes comparing whether the detected first temperature To is greater than the room temperature Tr.

That is, the diagnostic apparatus 200 determines whether the absolute value obtained by subtracting the first temperature To detected at the room temperature Tr is smaller than a predetermined first set value Tc1, If it is larger than the temperature (Tr), it is determined (405) that the high-pressure side refrigerant tube is blocked, and the diagnostic information is output (406)).

Here, the outputting of the diagnostic information includes displaying through the display unit of the diagnostic apparatus or transmitting the diagnostic information to the terminal 300.

At this time, the terminal 300 receives the diagnostic information from the diagnostic device 200, displays the received diagnostic information, and the operator can check the abnormality of each diagnostic information through the application of the terminal 300 have. Accordingly, the operator can immediately check the clogged portion of the refrigerant tube.

The diagnostic apparatus 200 determines whether the absolute value obtained by subtracting the first temperature To detected at the room temperature Tr is equal to or larger than a preset first set value Tc1, Tr), it is determined that the refrigerant flows normally through the high-pressure side refrigerant pipe, and it is diagnosed whether the refrigerant amount is proper or not.

The adequacy of the amount of refrigerant is diagnosed by different judgment conditions depending on the room temperature. This will be explained in detail.

The diagnosis apparatus 200 determines 408 whether the room temperature Tr is equal to or less than a preset first reference temperature Td1 and determines whether the indoor temperature Tr is equal to or less than a preset first reference temperature Td1 If it is determined that the operation time of the compressor has exceeded the second set time, the controller 409 determines that the amount of refrigerant is appropriate 409 and outputs the diagnosis information 406. [ do.

Here, the outputting of the diagnostic information includes displaying through the display unit of the diagnostic apparatus or transmitting the diagnostic information to the terminal 300.

If it is determined that the room temperature Tr exceeds the preset first reference temperature Td1, the diagnostic apparatus determines again whether the room temperature Tr exceeding the first reference temperature is lower than the second reference temperature Td2 do.

That is, the diagnostic apparatus determines whether the room temperature Tr is greater than the first reference temperature Td1 and less than the second reference temperature Td2 (410).

If it is determined that the room temperature Tr is greater than the first reference temperature Td1 and less than the second reference temperature Td2, the diagnostic apparatus determines whether the operation time of the compressor has passed the second set time from the start time 411, If it is determined that the operation time of the compressor has exceeded the second set time, it is determined whether the difference between the first temperature To on the high-pressure side and the second temperature Ti on the low-pressure side is greater than a preset second set value Tc2 (412) And when the difference between the first temperature To on the high pressure side and the second temperature Ti on the low pressure side is determined to be larger than the preset second set value Tc2, (413). If it is determined that the first temperature (To) on the high pressure side is larger than the preset third set value (Tc3), it is determined (409) that the refrigerant amount is appropriate.

The diagnosis apparatus is configured such that the difference between the first temperature To on the high pressure side and the second temperature Ti on the low pressure side is smaller than the difference between the first temperature T0 on the high pressure side and the second temperature Ti on the low pressure side when the room temperature Tr is higher than the first reference temperature Td1 and lower than the second reference temperature Td2 If the first temperature To on the pressure side is equal to or less than the second set value Tc2 and the third temperature value Tc3 is less than the preset third set value Tc3, the refrigerant quantity is diagnosed to be insufficient 414 and the diagnosis information is output 406 .

The second temperature (Ti) of the refrigerant passing through the indoor heat exchanger and flowing to the refrigerant pipe on the low pressure side is. The higher the amount, the lower the value, and the lower the amount, the higher the value.

That is, when the amount of the circulating refrigerant in the cooling cycle is insufficient, the second temperature is higher than when the refrigerant amount is sufficient, because the vapor phase ratio is higher than the liquid phase ratio of the refrigerant passing through the indoor heat exchanger.

On the other hand, when the amount of circulating refrigerant in the cooling cycle is sufficient, since the liquid phase ratio is higher than the vapor phase ratio of the refrigerant passing through the indoor heat exchanger, the temperature of the heat exchanger immediately before the determination is lower than when the refrigerant amount is insufficient.

The phase change of the refrigerant in the indoor heat exchanger is performed (liquid-to-vapor phase), so that the phase change of the refrigerant can not be normally performed when the indoor heat exchanger does not operate normally.

As a result, the ratio of the liquid phase in the refrigerant present in the indoor heat exchanger is higher than the ratio of the vapor phase, and heat exchange is not normally performed.

Therefore, when the first temperature on the high pressure side is lowered to the third predetermined value Tc3 or lower by the cool liquid refrigerant present in the indoor heat exchanger, it is determined that the proper amount of the refrigerant is not supplied to the indoor unit.

Here, the first set time is approximately 4 minutes and 50 seconds, and the second set time is approximately 5 minutes and 50 seconds.

The diagnostic apparatus further includes checking the pressure of the refrigerant pipe on the low pressure side and determining the amount of refrigerant insufficient based on the identified pressure, and it is also possible to output information on the insufficient amount of refrigerant.

The diagnostic apparatus is configured such that the indoor temperature Tr is lower than the first reference temperature Td1 and the indoor temperature Tr is higher than the first reference temperature Td1 and lower than the second reference temperature Td2, (Tr) exceeds the second reference temperature Td2 (415), and the operating time of the compressor is confirmed.

Here, the first reference temperature Td1 is about 20 占 폚, the second reference temperature Td2 is about 30 占 폚, and the first reference temperature Td1 is lower than the second reference temperature Td2.

That is, the diagnostic apparatus determines (416) whether the operation time of the compressor has passed the second set time from the start time.

If it is determined that the operation time of the compressor has passed the second set time, the diagnostic apparatus determines that the difference between the first temperature To on the high-pressure side and the second temperature Ti on the low-pressure side is smaller than the preset fourth set value Tc4 If it is determined that the difference between the first temperature To on the high pressure side and the second temperature Ti on the low pressure side is larger than the preset fourth set value Tc4, (418). If it is determined that the first temperature To on the high-pressure side is larger than the preset fifth preset value Tc5, it is determined 409 that the amount of refrigerant is appropriate .

When the difference between the first temperature To on the high-pressure side and the second temperature Ti on the low-pressure side is smaller than a preset fourth set value Tc4 (Tc2) when the room temperature Tr exceeds the second reference temperature Td2, ) And the first temperature To on the pressure side is equal to or less than a preset fifth preset value Tc5, the refrigerant amount is diagnosed to be inadequate (414) and the diagnostic information is output (406).

Here, the fifth set value Tc5 may have a value larger than the third set value Tc3.

That is, even if the same amount of refrigerant flows through the indoor unit, the degree of the indoor heat exchanger temperature dropping may vary depending on the room temperature before the compressor operation. The higher the indoor temperature before the operation of the compressor, the lower the indoor heat exchanger temperature Can be low.

Therefore, when the room temperature before the compressor is operated exceeds the second reference temperature, the fifth set value may be set to a value larger than the third set value to increase the accuracy of the determination.

The diagnostic apparatus further includes checking the pressure of the refrigerant pipe on the low pressure side and determining the amount of refrigerant insufficient based on the identified pressure, and it is also possible to output information on the insufficient amount of refrigerant.

It is also possible to fill the deficient amount of refrigerant based on the "pressure table per temperature" attached to the outdoor unit.

Thereafter, the air conditioner terminates the trial operation when a preset commissioning time elapses, and the diagnostic apparatus and the terminal store the diagnostic information and the commissioning information.

100: air conditioner 110: outdoor unit
120: indoor unit 130: outdoor driving module
200: Diagnostic device 300:

Claims (17)

A connecting member connected to the refrigerant pipe of the air conditioner by an operator;
A refrigerant temperature detecting unit provided on the connecting member and detecting a temperature of the refrigerant pipe; and an air temperature detecting unit detecting an outside air temperature of the connecting member;
A controller for diagnosing the clogging of the refrigerant pipe and the adequacy of the amount of refrigerant based on the detected temperature;
And an output unit for outputting diagnostic information corresponding to the diagnosis result. The method according to claim 1,
The refrigerant temperature detection unit is connected to the high pressure side refrigerant pipe and the low pressure side refrigerant pipe of the air conditioner to detect the temperature of the high pressure side refrigerant and the temperature of the low pressure side refrigerant,
Wherein the air temperature detecting unit detects the temperature of the indoor space in which the indoor unit of the air conditioner is located. 3. The method of claim 2,
Wherein the detecting unit further includes a pressure detecting unit connected to the low pressure side refrigerant pipe of the air conditioner for detecting the pressure of the refrigerant,
Wherein the controller determines the amount of refrigerant that is insufficient based on the detected pressure. The method according to claim 1,
Further comprising a communication unit for performing communication with the air conditioner,
Wherein the control unit transmits a test run command to the air conditioner and receives operation information and diagnostic information from the air conditioner at the time of trial operation of the air conditioner. 5. The apparatus of claim 4,
And determines whether the plurality of loads of the air conditioner are normally operated, the operation information of the air conditioner, whether the refrigerant tube is normally installed, or the like based on the operation information and the diagnosis information. The image processing apparatus according to claim 1,
And a display unit for displaying the diagnostic information. The image processing apparatus according to claim 1,
And a communication unit for transmitting diagnostic information to an external terminal. The apparatus of claim 1,
Of air-conditioner that can not communicate in cooling operation Diagnosis device of an air conditioner performing diagnosis. The temperature of the room air is detected and stored immediately before the trial operation of the air conditioner,
The temperature and the pressure of the refrigerant pipe are detected through a detection unit provided on a connecting member connected to the refrigerant pipe of the air conditioner,
Detecting the temperature and pressure of the refrigerant in the refrigerant pipe of the air conditioner at the time of trial operation of the air conditioner,
And diagnosing whether or not the refrigerant tube is clogged based on the detected refrigerant temperature and the room temperature when a preset first set time elapses from the start of operation of the air conditioner,
Determining whether the operating time of the air conditioner has exceeded a predetermined second set time period when the refrigerant pipe is opened,
Determining whether the amount of refrigerant in the air conditioner is appropriate based on the indoor temperature and the refrigerant temperature when the operating time of the air conditioner is determined to have passed the second set time,
And outputs diagnostic information corresponding to the diagnosis result. 10. The method of claim 9, wherein detecting the temperature and pressure of the refrigerant in the refrigerant tube comprises:
A first temperature of the high-pressure refrigerant pipe of the air conditioner is detected,
A second temperature of the low-pressure side refrigerant pipe of the air conditioner is detected,
And detecting the pressure of the low-pressure side refrigerant pipe of the air conditioner. 11. The method according to claim 10, wherein the diagnosis of whether or not the refrigerant tube is clogged comprises:
And diagnosing the clogging of the high-pressure side refrigerant tube when the temperature of the high-pressure side of the air conditioner is higher than the room temperature. 11. The method according to claim 10,
Calculating a difference value between the first temperature and the second temperature,
And comparing the calculated difference value with a set value to diagnose whether the amount of refrigerant is appropriate. 13. The method of claim 12, wherein comparing the calculated difference value to a set value comprises:
Confirms the stored set value corresponding to the room temperature,
And comparing the determined set value with the difference value. 14. The method according to claim 13,
If the calculated difference value is larger than the set value, it is diagnosed that the amount of the refrigerant is appropriate,
And diagnosing that the amount of the refrigerant is insufficient if the calculated difference value is less than the set value. 15. The method of claim 14,
If it is determined that the amount of the refrigerant is insufficient, the amount of insufficient refrigerant corresponding to the detected pressure is confirmed,
And outputting the identified amount of refrigerant. 10. The method of claim 9,
And if the air conditioner is communicable with the air conditioner, a test commissioning command is transmitted to the air conditioner,
Wherein the operation information and the diagnostic information are received from the air conditioner while the air conditioner performs the trial operation. 10. The method of claim 9, wherein outputting the diagnostic information comprises:
And outputting diagnostic information to an external terminal connected through communication.

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