JP2011242004A - Operation check device of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform highly accurate performance test measurement and fault diagnosis by achieving detailed setting of respective equipment in operation check, using an external control device having high versatility.SOLUTION: There is provided an operation check device 1 which comprises: a microcomputer 3A of an air conditioner 2 side; and a personal computer 10 which can be connected to the microcomputer 3A so as to perform data communication with the same and in which an operation check program for checking an operation state of the air conditioner 2 is installed. The microcomputer 3A executes a program for checking in a state in which the personal computer 10 is connected thereto. transmits data of the operation state or the like of equipment upon the checking to the personal computer 10, the personal computer 10 can rewrite the program for checking of the microcomputer 3A by the operation check program.

Description

  The present invention relates to an operation check device that performs performance verification measurement and failure diagnosis of an air conditioner.

  Conventionally, an air conditioner is subjected to performance verification measurement before shipment or after installation, and failure diagnosis of each device constituting the air conditioner, for example, a compressor, an expansion valve, and other electromagnetic valves. (For example, refer to Patent Document 1).

  In this case, the control device for the air conditioner (the air conditioner side control device) is equipped with an operation check device, and the control device switches to a test operation mode different from the normal operation mode, so that the operation check device The desired items of the electrical system are sequentially checked. At this time, when the operation check is performed while the compressor is driven, for example, the compressor is fixed at a predetermined frequency and a desired item of the electric system is checked. When the operation check is performed with the compressor stopped, a desired item of the electrical system is checked in a state where the relay for driving and controlling the compressor is forcibly turned off.

JP 7-293967 A

  In the above conventional configuration, since the operation check device is mounted on the air conditioner, the data detected in the trial operation mode cannot be directly managed by a general-purpose personal computer or the like. In the trial operation mode, the frequency of the compressor, the open / close state of the electromagnetic valve, the opening of the expansion valve, etc. are fixed to preset ones, and it is not possible to perform a check with arbitrary conditions set.

  Moreover, the display items on the data display unit connected to the control device are also limited to predetermined items, and items that are arbitrarily displayed cannot be added after installation.

  In addition to this, for example, the behavior of expansion valves, compressors, and other equipment when the outside air temperature reaches the assumed outside temperature by rewriting the outside air temperature etc. to temporarily assumed parameters separately from the actual detection values. Checks with specific conditions, such as failure diagnosis that checks, could not be realized.

  As described above, since the performance and electrical characteristics of each device cannot be easily measured, it has been difficult to realize highly accurate performance verification measurement and failure diagnosis.

  The present invention has been made in order to solve the conventional technical problems, and by using a highly versatile external control device, it is possible to make detailed settings of each device at the time of operation check, and high accuracy. Enables performance verification measurement and fault diagnosis.

  In order to solve the above-described problems, an operation check device of the present invention is provided in an air conditioner, and controls an air conditioner side control device that performs operation control of the air conditioner, and the air conditioner side control device and data communication. It is constructed from an external control device that can be connected to perform an operation check program for checking the operation state of the air conditioner, and the air conditioner side control device is installed with the operation check program. While the external control device is connected, a pre-written check program is executed and data related to the operation control and operation state of the device at the time of checking is transmitted to the external control device. The check program of the air conditioner side control device can be rewritten by the check program

  The invention of claim 2 is that in the above invention, the items of the check program of the air conditioner side control device rewritable by the external control device are the operating frequency of the compressor fixed by the check program, the opening degree of the expansion valve And any one or more of the state of the solenoid valve and other control parameters.

  The invention of claim 3 is characterized in that, in each of the above inventions, the data transmitted from the air conditioner-side control device to the external control device includes at least one of performance verification measurement and fault diagnosis.

  According to a fourth aspect of the present invention, in each of the above inventions, the air conditioner is an outdoor unit provided with an air conditioner side control device, an air connected to the air conditioner side control device of the outdoor unit via an indoor / outdoor operation line. It consists of the indoor unit provided with the harmony machine side control apparatus, and an external control apparatus is connected to the indoor / outdoor operation line, It is characterized by the above-mentioned.

  According to a fifth aspect of the present invention, the outdoor unit and the indoor unit include an adapter for centralized control, and the outdoor unit and the air conditioner side control device of the indoor unit are connected by an indoor / outdoor operation line via the adapter. It is characterized by being.

  The invention of claim 6 is characterized in that, in each of the above inventions, the external control device is USB-connected to the air conditioner side control device.

  According to the air conditioner operation check device of the present invention, the air conditioner side control device that is provided in the air conditioner and controls the operation of the air conditioner, and performs data communication with the air conditioner side control device. Therefore, the air conditioner side control device can be connected to an external control device installed with an operation check program, and can be installed with an operation check program for checking the operation state of the air conditioner. Since the check program written in advance is executed in a state where the device is connected, and data related to the operation control and operation state of the device at the time of check is transmitted to the external control device. Configure the control device and install the operation check program on the personal computer. The by connecting to an air conditioner-side control unit of the air conditioner of interest, by executing the check program optionally, the performance and the electrical characteristic measurement of the air conditioner can be easily performed.

  In addition, since the external control device can rewrite the check program of the air conditioner side control device by the operation check program, detailed setting of each device at the time of operation check can be arbitrarily set via the external control device. It can be carried out.

  Therefore, since it is possible to perform an operation check of the air conditioner by setting an arbitrary condition, it becomes possible to perform performance verification measurement and failure diagnosis with high accuracy.

  According to the invention of claim 2, in addition to the above, the items of the check program of the air conditioner side control device rewritable by the external control device include the operating frequency of the compressor fixed by the check program, the expansion valve The degree of opening, the state of the solenoid valve, and other control parameters can be set to one or more, so the check program can be set to various conditions to achieve highly accurate fault diagnosis can do.

  According to the invention of claim 3, in addition to each of the above inventions, the data transmitted from the air conditioner side control device to the external control device includes at least one of those related to performance verification measurement and failure diagnosis. It is possible to store and display data related to performance verification measurement and fault diagnosis by an external control device. This facilitates management of the air conditioner using an external control device such as a general-purpose personal computer outside the air conditioner.

  According to the invention of claim 4, in addition to the above-mentioned inventions, the air conditioner includes an outdoor unit provided with an air conditioner side control device, an air conditioner side control device of the outdoor unit, and an indoor / outdoor operation line. It consists of an indoor unit equipped with a connected air conditioner side control device, and the external control device is connected to the indoor / outdoor operation line so as to perform data communication with the external control device via the indoor / outdoor operation line. Can be easy.

  According to the invention of claim 5, in addition to the above, the outdoor unit and the indoor unit are provided with an adapter for centralized control, and the outdoor unit and the air conditioner side control device of the indoor unit are connected to the indoor / outdoor operation line via the adapter. Therefore, a plurality of outdoor units and indoor units can be connected to each other via the adapter, and centralized control by an external control device can be facilitated.

  According to the invention of claim 6, in addition to the above-mentioned inventions, the external control device can be easily connected by USB connection to the air conditioner side control device, thereby improving convenience. Can be planned.

It is a schematic block diagram of the operation check apparatus of the air conditioner of this invention. It is a figure which shows the connection state of an air conditioner side control apparatus and an external control apparatus. It is a flowchart of the air conditioner side control apparatus. It is a schematic block diagram of the operation check apparatus of the air conditioner as another Example.

  Hereinafter, an air conditioner operation check device 1 according to an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic configuration diagram of an operation check device 1 for an air conditioner, and FIG. 2 is a diagram showing a connection state between a microcomputer 3A and a personal computer 10.

  The air conditioner 2 in the present embodiment includes an indoor unit 20 provided in a conditioned room and an outdoor unit 30 provided outside the room. The air conditioner 2 is a variable operating capacity (frequency variable) compressor, a four-way valve that switches the direction of refrigerant flow, a chamber that functions as an evaporator during heating operation, and a condenser that operates during cooling operation and heating operation. Outside heat exchanger, motorized expansion valve, solenoid valve that allows the refrigerant throttle amount (flow rate) to be adjusted arbitrarily according to the control signal, chamber that acts as a condenser during heating operation, and serves as an evaporator during cooling operation An inner heat exchanger or the like is provided with a refrigerant circuit connected in a ring shape with a refrigerant pipe.

  The indoor unit 20 includes the indoor heat exchanger, an electric expansion valve, a solenoid valve, and other fans, and the outdoor unit 30 includes the compressor, the outdoor heat exchanger, an electric expansion valve, an electromagnetic valve, and the like. A valve, a blower fan, and the like are provided.

  Both the indoor unit 20 and the outdoor unit 30 are provided with general-purpose microcomputers (microcomputers) 3A and 3B having a storage unit (memory) capable of storing various data. The microcomputers 3A and 3B are mutually connected. Data is transmitted and received to control the operation of the air conditioner 2. Each of the microcomputers 3A and 3B is connected to the indoor / outdoor operation line 23 so as to be able to perform data communication, and any of the microcomputers 3A and 3B can constitute the air conditioner side control device 3. In this embodiment, FIG. As shown, the microcomputer 3A disposed in the outdoor unit 30 constitutes an air conditioner side control device of the operation check device 1 described later in detail.

  The microcomputer 3A of the outdoor unit 30 constituting the air conditioner-side control device is disposed on the outdoor control board 4, and on the outdoor control board 4, in addition to this, a monitor setting unit, an operation / connection state A display unit, a data display unit, an operation switch, an operation lamp, a power lamp, an alarm lamp, and the like are mounted.

  Here, the monitor setting unit is provided with a unit setting switch, an address setting switch, an item setting switch, and the like. The unit setting switch is used to select the classification of the indoor / outdoor units 20 and 30 for monitoring data, and the address setting switch is used to set the address of the indoor / outdoor units 20 and 30. The item setting switch is used to set an item number of data contents to be monitored. The data contents that can be monitored on the air conditioner 2 side are predetermined, such as room temperature, coil temperature, blowing temperature, alarm data, etc. for the indoor unit 20, and discharge temperature, outdoor side for the outdoor unit 30. These are the refrigerant temperature, outside air temperature, coil temperature, current value, oil level, alarm data, etc. of the heat exchanger.

  Therefore, by adjusting the item setting switch to the item number to be monitored on the outdoor control board 4 side, the data content of the monitor item is displayed on the data display unit. As a result, it is possible to sequentially determine the detection values and situations detected by the sensors corresponding to the monitor items.

  A check program is written in the microcomputer 3A provided on the outdoor control board 4 in advance. This check program is an electrical system check program implemented at the beginning as part of a test operation mode different from normal operation (normal mode), and is connected to an external control device 10 to be described later for normal operation. Is switched to the trial operation mode, whereby a predetermined check program is executed.

  Next, an external control device that constructs the operation check device 1 together with the microcomputer 3A (air conditioner side control device 3) will be described. The external control device is configured by a control device capable of installing an operation check program for checking the operation state of the air conditioner 2, and in this embodiment, as an example, a general-purpose personal computer (hereinafter referred to as a personal computer). ) 10 is configured by installing an operation check program. The external control device is not limited to the personal computer, and may be, for example, a portable terminal as long as the program can be installed and the check program item can be rewritten. .

  The personal computer 10 and the air conditioner side control device 3 (in this case, the microcomputer 3A) are detachably connected by a communication line 11. In this embodiment, in order to facilitate the connection between the external control device and the air conditioner side control device 3, the USB interface 12 connected to the personal computer 10 is connected to the terminal 13 of the air conditioner side control device 3 (microcomputer 3A). Can be connected to. Thereby, since the external control device and the air conditioner side control device 3 are connected by USB, the convenience can be improved.

  In the personal computer 10, the monitor item input to the microcomputer 3 </ b> A connected via the communication line 11 and the detection value and status detected by the sensor corresponding thereto can be displayed on the display unit (display) 15. The

  In addition to this, for the control of the state of each device for check currently set in the check program of the microcomputer 3A, that is, the frequency of the compressor, the opening degree of the expansion valve, the open / close state of the electromagnetic valve, the outside air temperature, etc. These parameters can be displayed on the display unit 15.

  The personal computer 10 can rewrite the state of each check device (check program) currently set in the check program of the microcomputer 3A as described above based on the installed operation check program. .

  With the above configuration, the operation check operation by the operation check device 1 of the present embodiment will be described with reference to the flowchart of FIG. First, in step S1, the microcomputer 3A determines whether or not the personal computer 10 is connected. Here, when the personal computer 10 is not connected to the microcomputer 3A of the air conditioner 2, the operation check operation, that is, the test operation mode is not executed, the process proceeds to step S2, and the normal operation mode is executed.

  On the other hand, when the personal computer 10 is connected to the microcomputer 3A, the microcomputer 3A determines in step S1 that the personal computer 10 is connected, and proceeds to step S2 to shift to a test operation mode in which an operation check operation is performed. The check program is executed based on the above.

  Here, in step S3, the microcomputer 3A determines whether or not there is a rewrite request for the compressor frequency of the check program in the connected personal computer 10. That is, before or after the personal computer 10 is connected to the microcomputer 3A, if there is a rewrite request from the personal computer 10 regarding the compressor frequency of the check program, the process proceeds to step S4, and the command in the check program is The frequency of the compressor is rewritten from the operation check program of the personal computer 10 in the blank or the place where the current set value is entered.

  Thereafter, similarly, it is determined whether or not there is a rewrite request for the opening degree of the expansion valve of the check program from the personal computer 10 (step S5). If there is a rewrite request, the microcomputer 3A expands the check program. The valve opening is rewritten (step S6). In addition to this, when there is a rewrite request from the personal computer 10 regarding the open / close state of the solenoid valve of the check program, other control parameters such as outside air temperature, discharge temperature, heat exchanger refrigerant temperature, etc. If there is a rewrite request for one or more of the above, the microcomputer 3A rewrites the check program.

  Thereafter, the microcomputer 3A proceeds to step S7 and executes a check program. In this embodiment, the microcomputer 3A has a compressor frequency, an expansion valve opening degree, and an electromagnetic valve based on a check program written in advance or a check program rewritten by the personal computer 10 as described above. The value or a certain state (the solenoid valve is opened and closed) is fixed, and other control parameters (for example, the outside temperature) are changed to check values, and the operation control at the time of check is executed.

  Then, the microcomputer 3A proceeds to step S8, determines whether or not there is a request for transmission of detection data from the personal computer 10, and proceeds to step S9 if there is, and is detected by each sensor when the check program is executed. Data related to operation control and operation status including temperature, pressure, failure information, etc. of each device (for example, failure diagnosis data for determining whether a sensor or electrical system is normal or predetermined performance verification measurement data) The personal computer 10 transmits. And in the personal computer 10, these data are taken in from the microcomputer 3A, are preserve | saved, and are displayed on the display part 15 connected.

  After that, the microcomputer 3A proceeds to step S10, determines whether a predetermined time has elapsed since the execution of the operation check program, or whether the connection with the personal computer 10 has been released. Returns to step S3, and thereafter repeats step S3 to step S9 until a predetermined time elapses or until the connection with the personal computer 10 is released. Then, after a predetermined time elapses or after the connection with the personal computer 10 is released, the process proceeds to step S11, the operation check program is terminated, the process proceeds to step S2, and thereafter the normal operation is executed.

  Thus, in the operation check device 1 of the air conditioner, the microcomputer 3A (air conditioner side control device) is written in advance in a state where the personal computer (external control device) 10 in which the operation check program is installed is connected. Since the data for operation control and operation state of each device when the operation check program is executed is transmitted to the personal computer 10, the personal computer 10 in which the operation check program is installed is connected to the microcomputer 3A. Thus, it is possible to easily execute the program for checking and measure the performance and electrical characteristics of the air conditioner.

  In particular, since the external control device can be configured by installing an operation check program in a general-purpose personal computer, the versatility can be improved.

  Further, the personal computer 10 constituting the external control device can rewrite the check program of the microcomputer 3A (air conditioner side control device) by the operation check program. Detailed settings of the device, for example, any one of the operation frequency of the compressor, the opening of the expansion valve, the state of the electromagnetic valve, and other control parameters, which are items fixed by the check program, Alternatively, a plurality can be arbitrarily set.

  For this reason, even if the current outside air temperature is + 10 ° C., the outside air temperature is + 30 ° C. by rewriting the parameter related to the outside air temperature to + 30 ° C. for the purpose of fault diagnosis even if the current outside air temperature is + 10 ° C. It is possible to perform an operation check for expansion valve opening control and compressor operation frequency control assuming a certain case. Therefore, it is possible to perform fault diagnosis and performance verification measurement that enable various conditions to be set, and to realize highly accurate operation checks.

  In addition, in order to be able to transmit at least one of the data related to performance verification measurement and failure diagnosis from the microcomputer 3A (air conditioner side control device) to the personal computer 10 (external control device), Data related to failure diagnosis can be stored and displayed. Thereby, the management of the said air conditioner 2 becomes easy using the general purpose personal computer 10 in the exterior away from the air conditioner 2. FIG.

  In FIG. 1, the air conditioner side control device 3 is configured by the microcomputer 3 </ b> A provided in the outdoor unit 30 constituting the air conditioner 2, but the microcomputer 3 </ b> B provided in the indoor unit 20 is similar to the above. It is good also as a structure which performs a driving | running | working check program by connecting the personal computer 10 as an external control apparatus.

  In a large facility or the like, as shown in FIG. 4, a plurality of indoor units 20 and outdoor units 30 constitute an air conditioner. In this case, the microcomputers 3A, 3B,... Provided in each are connected to each other via an indoor / outdoor operation line 23 via a central control adapter (S-LINK) 25 so that data communication is possible.

  The microcomputers 3A and 3B of each indoor unit 20 or outdoor unit 30 are assigned addresses by an address setting switch, respectively, and the indoor / outdoor operation line 23 to which the microcomputers 3A and 3B are connected to each other, or either directly A personal computer 10 as an external control device is connected to the microcomputer 3A or 3B.

  As a result, the operating states (various temperatures and pressures) of all the connected indoor units 20 and outdoor units 30 based on the preset operation check program of any microcomputer 3A or 3B via the indoor / outdoor operation line 23. Etc.), the compressor frequency, the opening of the expansion valve, the open / close state of the solenoid valve, etc. are fixed to a desired state, and a fault diagnosis and performance verification measurement are performed.

  As described above, the outdoor unit 30 including the microcomputer 3A as the air conditioner side control device and the indoor unit 20 including the microcomputer 3B as the air conditioner side control device are connected to the indoor / outdoor operation line 23 via the adapter 25. Are connected to each other, and the personal computer 10 as an external control device is connected to the indoor / outdoor operation line 23, thereby facilitating data communication.

  Therefore, even in the case of an air conditioner to which a plurality of outdoor units 30 and indoor units 20 are connected, even in the case of centralized control by any of the outdoor units 30 or the microcomputer 3A or 3B of the indoor unit 20, By connecting the personal computer 10 to the indoor / outdoor operation line 23 for connecting them, the operation check program can be executed in a concentrated manner, and data during the execution of the program can be managed.

  Thereby, management of the whole air conditioner 2 becomes easy using the personal computer 10 in the exterior away from each outdoor unit 30 and the indoor unit 20.

DESCRIPTION OF SYMBOLS 1 Operation check apparatus 2 Air conditioner 3 Air conditioner side control apparatus 3A, 3B Microcomputer (microcomputer)
4 Outdoor control board 10 Personal computer (external control device)
11 Communication Line 12 USB Interface 13 Terminal 15 Display Unit (Display)
20 indoor unit 23 indoor / outdoor operation line 25 adapter 30 outdoor unit

Claims (6)

An air conditioner side control device that is provided in the air conditioner and that controls the operation of the air conditioner, and can be connected to perform data communication with the air conditioner side control device, and the operation state of the air conditioner Built from an external control device that can install an operation check program for checking
The air conditioner-side control device executes a check program written in advance in a state where the external control device in which the operation check program is installed is connected, and relates to the operation control and operation state of the device at the time of check Sending data to the external control device,
The air conditioner operation check device, wherein the external control device can rewrite a check program of the air conditioner side control device by the operation check program.   The items of the check program for the air conditioner side control device that can be rewritten by the external control device include the operation frequency of the compressor, the opening degree of the expansion valve, the state of the electromagnetic valve, etc., fixed by the check program. The operation check device for an air conditioner according to claim 1, wherein one or more of the control parameters are set.   3. The air according to claim 1, wherein the data transmitted from the air conditioner side control device to the external control device includes at least one of performance verification measurement and failure diagnosis. The operation check device of the harmony machine.   The air conditioner includes an outdoor unit including the air conditioner side control device, an air conditioner side control device connected to the air conditioner side control device of the outdoor unit, and an indoor / outdoor operation line. The operation check device for an air conditioner according to any one of claims 1 to 3, wherein the external control device is connected to the indoor / outdoor operation line.   The outdoor unit and the indoor unit include an adapter for centralized control, and the air conditioner side control device of the outdoor unit and the indoor unit is connected by the indoor / outdoor operation line via the adapter. The operation check device for an air conditioner according to claim 4.   The air conditioner operation check device according to any one of claims 1 to 5, wherein the external control device is USB-connected to the air conditioner side control device.

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