JP4765798B2 - Diagnostic device and air conditioning management device - Google Patents

Description

  The present invention relates to a diagnostic device for diagnosing the mounting position of a room temperature sensor of an air conditioner and an air conditioning management device having such a diagnostic function.

  Conventionally, an indoor unit or a remote controller of an air conditioner often includes a room temperature sensor for detecting the temperature of the air-conditioning target space. In such an air conditioner, the operation of the air conditioner is controlled based on the room temperature value detected by the room temperature sensor.

Incidentally, such a room temperature sensor may not accurately indicate the temperature of the air-conditioned space depending on the mounting position. For example, in Patent Document 1, the room temperature sensor built in the remote controller may exhibit a temperature higher than the actual temperature of the air-conditioning target space due to the influence of heat held by the remote controller body or the wall surface to which the remote controller is attached. The problem is pointed out. Therefore, in Patent Document 1, such a problem is addressed by adding an appropriate correction corresponding to the temperature change in the room to the output value of the room temperature sensor.
JP 2001-208390 A

  However, it is not limited to the situation pointed out in Patent Document 1 that the room temperature sensor may indicate a temperature different from the actual temperature of the air-conditioning target space. Therefore, the method for correcting the output value of the room temperature sensor proposed in Patent Document 1 does not always enable accurate correction of the output value of the room temperature sensor installed in any manner. Absent. Therefore, when the room temperature sensor is installed in an inappropriate position where the temperature of the air-conditioning target space cannot be measured accurately, the user first knows that and then replaces the room temperature sensor with another position. It is desirable to take appropriate measures.

  The subject of this invention is detecting the defect of the attachment position of the room temperature sensor of an air conditioning apparatus.

  The diagnostic device according to the first invention includes a storage unit, a determination unit, and a notification unit, and diagnoses the mounting position of the room temperature sensor of the air conditioner. The storage unit stores change history data of the set temperature of the air conditioner. The determination unit determines whether the set temperature has been changed at a predetermined frequency or more based on the change history data. When the determination unit determines that the set temperature has been changed at a predetermined frequency or higher, the notification unit notifies that the mounting position of the room temperature sensor is defective.

  In this diagnostic apparatus, since the change history data of the set temperature of the air conditioner is stored in the storage unit, it is determined whether or not the set temperature is changed at a predetermined frequency or more based on the change history data of the set temperature. The determination unit can make a determination. When the set temperature is changed at a predetermined frequency or more, the user sets the set temperature many times because the air-conditioned space is not air-conditioned according to the set temperature set by the user. The situation is fixed. In addition, such a situation is because the room temperature sensor is attached to a position where it is exposed to sunlight, exposed to a draft, or exposed to cooled or warm air from an air conditioner. This is likely to occur when the room temperature sensor shows a temperature higher or lower than the actual temperature of the air-conditioned space. Therefore, when the determination unit determines that the set temperature has been changed at a predetermined frequency or more, it is predicted that the room temperature sensor is attached to an inappropriate position, and the notification unit notifies that fact. To do. Note that the notification that the mounting position of the room temperature sensor is defective or suspected of being defective may be given to the manager of the building where the air conditioner is installed, or the air conditioner When it is connected to a remote service center, it may be performed for the staff of the service center or may be performed for other persons. Thus, in the environment where this diagnostic apparatus is introduced, it is possible to detect a defect in the mounting position of the room temperature sensor of the air conditioner.

  A diagnostic device according to a second invention is the diagnostic device according to the first invention, wherein the determination unit sets the predetermined temperature when the preset temperature has been changed a predetermined number of times within the first time interval. It is judged that the frequency has been changed more than the frequency.

  In this diagnostic apparatus, when the determination unit determines that the set temperature has been changed a predetermined number of times (for example, twice or more per hour) within a predetermined time interval, the mounting position of the room temperature sensor is The notification unit notifies that it is defective or suspected of being defective. That is, with this diagnostic device, it is possible to detect a failure in the mounting position of the room temperature sensor even when the room temperature sensor does not accurately indicate the temperature of the air-conditioning target space only in a specific situation, not on a daily basis. .

  A diagnostic device according to a third aspect of the present invention is the diagnostic device according to the second aspect of the present invention, wherein the determining unit determines whether or not the set temperature is within the second time interval when determining whether or not the set temperature has been changed at a predetermined frequency or more. Is changed multiple times, the multiple changes are counted as one change. The second time interval is shorter than the first time interval.

  In this diagnostic apparatus, when the determination unit counts the number of changes of the set temperature, if the set temperature is changed a plurality of times within a short time interval (for example, 1 minute), the change is performed once. Is considered a change. Therefore, in this diagnostic apparatus, it is possible to ignore a change in the set temperature due to a user's wrong press.

  A diagnostic device according to a fourth invention is the diagnostic device according to the second invention or the third invention, wherein the determination unit changes the set temperature when determining whether the set temperature has been changed at a predetermined frequency or more. When the width is smaller than the predetermined temperature width, the change is not counted.

  In this diagnostic apparatus, when the determination unit counts the number of times of changing the set temperature, if the change range of the set temperature is smaller than a certain temperature range (for example, 1 ° C.), the change is ignored. Therefore, in this diagnostic apparatus, it is possible to ignore changes in the set temperature due to user preferences.

  A diagnostic device according to a fifth aspect of the present invention is the diagnostic device according to the first aspect of the present invention, wherein the determination unit has a set temperature that is equal to or higher than a predetermined frequency in the same time zone based on change history data for a predetermined number of days in the past. Determine whether it has been changed. When the determination unit determines that the set temperature has been changed at a predetermined frequency or more in the same time zone, the notification unit notifies that the mounting position of the room temperature sensor is defective.

  In this diagnostic apparatus, whether the determination unit has a time zone in which the set temperature is changed at a predetermined frequency or more or a time zone in which the set temperature tends to change based on the change history data for a predetermined number of days in the past. Judge whether or not. On the other hand, when the determination unit determines that such a time zone exists, the notification unit notifies that the mounting position of the room temperature sensor is defective or suspected of being defective. As a result, in this diagnostic apparatus, the room temperature sensor accurately indicates the temperature of the air-conditioning target space only in a specific time zone, such as when the room temperature sensor is exposed to sunlight within a day. Even in such a case, it is possible to detect a defect in the mounting position of the room temperature sensor.

A diagnostic device according to a sixth aspect of the present invention includes a storage unit, a determination unit, and a notification unit, and diagnoses the mounting position of the room temperature sensor of the air conditioner. A memory | storage part memorize | stores the change history data of the preset temperature of an air conditioning apparatus, and the transition history data of the room temperature value shown by a room temperature sensor. Determination unit, based on the change history data and transition history data, the set temperature is predetermined from the upper limit value of the settable temperature range as the set temperature within a predetermined temperature range, or from the lower limit value of the settable temperature range as the set temperature It is determined whether or not the state where the room temperature value set within the temperature range and the room temperature value indicated by the room temperature sensor indicates a value within the predetermined temperature range from the set temperature has been continued for a predetermined period or longer. To do. When the determination unit determines that the state has been continued for a predetermined period or longer, the notification unit notifies that the room temperature sensor mounting position is defective.

  In this diagnostic device, the change history data of the set temperature of the air conditioner and the change history data of the room temperature value indicated by the room temperature sensor are stored in the storage unit. Therefore, in this diagnostic device, the state where the set temperature is set near the upper limit value or the lower limit value and the room temperature value indicated by the room temperature sensor indicates a value near the set temperature continues for a predetermined period or longer. The determination unit can determine whether or not it has been performed based on the change history data of the set temperature and the transition history data of the room temperature value. If the above state continues for a predetermined period or longer, it is predicted that the room temperature sensor is in a state where the temperature sensor shows a lower temperature than the actual temperature during the cooling operation or the higher temperature than the actual temperature during the heating operation. Is done. This situation occurs particularly when the room temperature sensor is exposed to cooled or heated air from the air conditioner due to the so-called “short circuit phenomenon”. Cheap. Therefore, when it is determined that the above state has been continued for a predetermined period or longer, it is predicted that the room temperature sensor is attached to an inappropriate position, so that is notified. Note that the notification that the mounting position of the room temperature sensor is defective or suspected of being defective may be given to the manager of the building where the air conditioner is installed, or the air conditioner When it is connected to a remote service center, it may be performed for the staff of the service center or may be performed for other persons. Thus, in the environment where this diagnostic apparatus is introduced, it is possible to detect a defect in the mounting position of the room temperature sensor of the air conditioner.

A diagnostic device according to a seventh aspect is the diagnostic device according to the sixth aspect, wherein the determining unit sets the set temperature within a predetermined temperature range or as a set temperature from an upper limit value of a temperature range that can be set as the set temperature. It is set within the predetermined temperature range from the lower limit value of the possible temperature range , the room temperature value indicated by the room temperature sensor indicates a value within the predetermined temperature range from the set temperature, and the power consumption is low. It is determined whether or not it has been continued for more than the period.

  Generally, even when the set temperature is set near the upper limit value or near the lower limit value and the room temperature value indicated by the room temperature sensor shows a value near the set temperature, power consumption is large. In some cases, the room temperature sensor is not exposed to the cooled air or heated air from the air conditioner, and it is considered that the room temperature sensor is in a normal state. Therefore, in this diagnostic apparatus, the set temperature is set near the upper limit value or the lower limit value, the room temperature value indicated by the room temperature sensor indicates a value near the set temperature, and power consumption is low. The determination unit determines whether or not it has been continued for a predetermined period or more. If it is determined that such a state has been continued for a predetermined period or more, the room temperature sensor is attached to an inappropriate position. It is notified that it is predicted that it has been performed. Therefore, in this diagnostic apparatus, a defect in the mounting position of the room temperature sensor is detected with higher accuracy.

  An air conditioning management device according to an eighth aspect of the present invention includes a storage unit, a determination unit, and a notification unit, and has a diagnostic function for diagnosing the mounting position of the room temperature sensor of the air conditioner. The storage unit stores change history data of the set temperature of the air conditioner. The determination unit determines whether the set temperature has been changed at a predetermined frequency or more based on the change history data. When the determination unit determines that the set temperature has been changed at a predetermined frequency or higher, the notification unit notifies that the mounting position of the room temperature sensor is defective.

  In this air conditioning management device, since the change history data of the set temperature of the air conditioner is stored in the storage unit, whether or not the set temperature is changed at a predetermined frequency or more based on the change history data of the set temperature. Can be determined by the determination unit. When the set temperature is changed at a predetermined frequency or more, the user sets the set temperature many times because the air-conditioned space is not air-conditioned according to the set temperature set by the user. The situation is fixed. In addition, such a situation is because the room temperature sensor is attached to a position where it is exposed to sunlight, exposed to a draft, or exposed to cooled or warm air from an air conditioner. This is likely to occur when the room temperature sensor shows a temperature higher or lower than the actual temperature of the air-conditioned space. Therefore, when the determination unit determines that the set temperature has been changed at a predetermined frequency or more, it is predicted that the room temperature sensor is attached to an inappropriate position, and the notification unit notifies that fact. To do. Note that the notification that the mounting position of the room temperature sensor is defective or suspected of being defective may be given to the manager of the building where the air conditioner is installed, or the air conditioner When it is connected to a remote service center, it may be performed for the staff of the service center or may be performed for other persons. Thus, in an environment where the air conditioner is managed by this air conditioning management device, it is possible to detect a defect in the mounting position of the room temperature sensor of the air conditioner.

An air conditioning management device according to a ninth aspect of the present invention includes a storage unit, a determination unit, and a notification unit, and has a diagnostic function for diagnosing the mounting position of the room temperature sensor of the air conditioner. A memory | storage part memorize | stores the change history data of the preset temperature of an air conditioning apparatus, and the transition history data of the room temperature value shown by a room temperature sensor. Determination unit, based on the change history data and transition history data, the set temperature is predetermined from the upper limit value of the settable temperature range as the set temperature within a predetermined temperature range, or from the lower limit value of the settable temperature range as the set temperature The state in which the room temperature value set within the temperature range and the room temperature value indicated by the room temperature sensor (60, 70) indicates a value within the predetermined temperature range from the set temperature has continued for a predetermined period or longer. Determine whether or not. When the determination unit determines that the state has been continued for a predetermined period or longer, the notification unit notifies that the room temperature sensor mounting position is defective.

  In this air conditioning management device, the change history data of the set temperature of the air conditioner and the change history data of the room temperature value indicated by the room temperature sensor are stored in the storage unit. Therefore, in this air conditioning management device, the state where the set temperature is set near the upper limit value or near the lower limit value, and the room temperature value indicated by the room temperature sensor indicates a value near the set temperature is longer than a predetermined period. It can be determined whether the determination unit has been continued based on the change history data of the set temperature and the transition history data of the room temperature value. If the above state continues for a predetermined period or longer, it is predicted that the room temperature sensor is in a state where the temperature sensor shows a lower temperature than the actual temperature during the cooling operation or the higher temperature than the actual temperature during the heating operation. Is done. This situation occurs particularly when the room temperature sensor is exposed to cooled or heated air from the air conditioner due to the so-called “short circuit phenomenon”. Cheap. Therefore, when it is determined that the above state has been continued for a predetermined period or longer, it is predicted that the room temperature sensor is attached to an inappropriate position, so that is notified. Note that the notification that the mounting position of the room temperature sensor is defective or suspected of being defective may be given to the manager of the building where the air conditioner is installed, or the air conditioner When it is connected to a remote service center, it may be performed for the staff of the service center or may be performed for other persons. Thus, in an environment where the air conditioner is managed by this air conditioning management device, it is possible to detect a defect in the mounting position of the room temperature sensor of the air conditioner.

  In an environment where the diagnostic device according to the first aspect of the invention is introduced, it is possible to detect a defect in the mounting position of the room temperature sensor of the air conditioner.

  In the diagnostic device according to the second aspect of the present invention, it is possible to detect a defect in the mounting position of the room temperature sensor even when the room temperature sensor does not accurately indicate the temperature of the air-conditioning target space only in a specific situation, not on a daily basis. Can do.

  In the diagnostic apparatus according to the third aspect of the present invention, changes in the set temperature due to a user's mistake in pressing can be ignored.

  In the diagnostic device according to the fourth aspect of the present invention, changes in the set temperature due to user preferences can be ignored.

  In the diagnostic device according to the fifth aspect of the invention, the room temperature sensor accurately determines the temperature of the air-conditioning target space only in a specific time zone, such as when the room temperature sensor is exposed to sunlight within a day. Even when it is not shown, it is possible to detect a defect in the mounting position of the room temperature sensor.

  In an environment where the diagnostic device according to the sixth aspect of the invention is introduced, it is possible to detect a defect in the mounting position of the room temperature sensor of the air conditioner.

  In the diagnostic device according to the seventh aspect of the present invention, a defect in the mounting position of the room temperature sensor is detected with higher accuracy.

  In an environment where the air conditioning apparatus is managed by the air conditioning management apparatus according to the eighth aspect of the invention, it is possible to detect a defect in the mounting position of the room temperature sensor of the air conditioning apparatus.

  In an environment where the air conditioning apparatus is managed by the air conditioning management apparatus according to the ninth aspect, it is possible to detect a defect in the mounting position of the room temperature sensor of the air conditioning apparatus.

  Hereinafter, with reference to FIGS. 1-6, the air-conditioning management apparatus 10 (diagnosis apparatus) which concerns on one Embodiment of this invention is demonstrated.

<Installation environment of air conditioning management device>
As shown in FIG. 1, the air conditioning management device 10 is installed in an office building 1 and controls an air conditioner 2 that is also installed in the office building 1.

(1) Office Building The office building 1 includes a management room R1 in which an administrator of the office building 1 is present, and a plurality of rooms R2, R3,. The office building 1 is provided with an air conditioner 2 that air-conditions the rooms R1, R2, R3,. Moreover, the air-conditioning management apparatus 10 is installed in the management room R1.

(2) Air conditioner The air conditioner 2 mainly includes an indoor unit 30, a remote controller 40 for the indoor unit 30, and an outdoor unit 50 connected to the indoor unit 30 via a refrigerant communication pipe (not shown). It is configured.

a) Indoor unit The indoor unit 30 is a general term for a plurality of indoor units 31, 32a, 32b,..., 33a, 33b,. 32a, 32b,... Are installed in the room R2, and the indoor units 33a, 33b,... Are installed in the room R3. Has been. The indoor unit 30 exchanges heat between the refrigerant and the indoor air while exchanging control signals with the outdoor unit 50 via the dedicated network 3, thereby allowing the rooms R1, R2, R3,.・ Air conditioning inside.

  .., 33a, 33b,...,...,... Have room temperature sensors 61, 62a, 62b,. .., 63a, 63b,... (Collectively referred to as room temperature sensor 60) are connected. These room temperature sensors 61, 62a, 62b, ..., 63a, 63b, ..., ... are for the purpose of measuring the temperatures of the rooms R1, R2, R3, ..., respectively, in the office building 1 When the indoor units 31, 32a, 32b,..., 33a, 33b,... Are in an on state, the surrounding units are spaced at predetermined intervals. The temperature value is detected and sequentially transmitted to the control unit of the indoor unit 30. Subsequently, the control unit of the indoor unit 30 transmits the temperature value detected by the room temperature sensor 60 to the control unit (not shown) of the outdoor unit 50 via the dedicated network 3. The temperature values detected in the room temperature sensors 61, 62a, 62b,..., 63a, 63b,. ,..., 63a, 63b,.

b) Remote controller The remote controller 40 is a general term for a plurality of remote controllers 41, 42a, 42b,..., 43a, 43b,..., and these remote controllers 41, 42a, 42b,. 43a, 43b,... Can allow the user to perform various operation settings for the indoor units 31, 32a, 32b,..., 33a, 33b,. I have to. The remote controller 40 is provided on the walls of the rooms R1, R2, R3,.

  Then, when the user inputs operation commands such as turning on / off the indoor unit 30 and changing the operation mode, set temperature, air volume, and wind direction of the indoor unit 30 to the remote controller 40, the remote controller 40 appropriately receives the operation command received from the user. It converts into a signal and transmits to the control part (not shown) of the indoor unit 30 via the communication line 4. FIG. Subsequently, the control unit of the indoor unit 30 transmits these operation commands to the control unit (not shown) of the outdoor unit 50 via the dedicated network 3. The communication line 4 is a communication line that connects the remote controller 40 and the control unit of the indoor unit 30.

  In addition, remote controllers 41, 42a, 42b,..., 43a, 43b,... Have room temperature sensors 71, 72a, 72b,. ,... (Collectively referred to as room temperature sensor 70). These room temperature sensors 71, 72a, 72b, ..., 73a, 73b, ..., ... are respectively the indoor units 31, 32a, 32b, ..., 33a, 33b, ...,. When is in the ON state, ambient temperature values are detected at predetermined intervals, and the detected temperature values are sequentially transmitted to the indoor units 31, 32a, 32b,..., 33a via the communication line 4. , 33b,... Subsequently, the control unit of the indoor unit 30 transmits the temperature value detected by the room temperature sensor 70 to the control unit of the outdoor unit 50 via the dedicated network 3. And the temperature value detected in this room temperature sensor 71,72a, 72b, ..., 73a, 73b, ..., ... is the room temperature sensor 71,72a, 72b, on control of the air conditioning apparatus 2. .., 73a, 73b,...

c) Outdoor unit The outdoor unit 50 is installed on the roof of the office building 1 and exchanges control signals with the indoor unit 10 via the dedicated network 3 and heats between the refrigerant and the outdoor air. Exchange. When the outdoor unit 50 receives the temperature value detected by the room temperature sensors 60 and 70 from the indoor unit 30, the outdoor unit 50 sequentially transmits the temperature value to the air conditioning management device 10 via the dedicated network 3. When the outdoor unit 50 receives an operation command input by the user from the indoor unit 30 via the remote controller 40, the outdoor unit 50 sequentially transmits it to the air conditioning management device 10 via the dedicated network 3.

<Configuration of air conditioning management device>
The air conditioning management device 10 monitors and controls the air conditioning device 2 via the dedicated network 3. And the air-conditioning management apparatus 10 has a diagnostic function for diagnosing whether or not the room temperature sensors 60 and 70 of the air conditioner 2 are attached at appropriate positions as part of the monitoring and control of the air conditioner 2. Yes. The “appropriate position” here is a position where the room temperature sensors 60 and 70 are not exposed to sunlight or a draft or directly from the air blown out from the indoor unit 30. The temperature value indicated by the room temperature sensors 60 and 70 is a position that appropriately represents the temperature of the air conditioning target space of the indoor unit 30.

  As shown in FIG. 2, the air conditioning management device 10 mainly includes a control unit 11, a storage unit 12, a communication port 13, a display 14, and a speaker 15. The storage unit 12 stores a change history database 12a and a transition history database 12b. The communication port 13 is connected to a control unit (not shown) of the outdoor unit 50 via the dedicated network 3.

  The change history database 12a is a database for storing a history of changing operation of the set temperature by the user. Each time an operation command for changing the set temperature of the indoor unit 30 input by the user via the remote controller 40 is transmitted to the air conditioning management device 10, a new record is added to the change history database 12a. Will be. That is, one record stored in the change history database 12 a corresponds to one set temperature change operation performed by the user via the remote controller 40.

  As shown in FIG. 3, the change history database 12a has an indoor unit ID field, a change date / time field, and a set temperature field. The indoor unit ID field stores an indoor unit ID that identifies the indoor unit 30 that is the target of the set temperature change operation, and the change date field stores the date and time when the set temperature change operation was performed. In the set temperature field, a set temperature newly set by a change operation of the set temperature is stored.

  On the other hand, the transition history database 12 b is a database for storing a history of temperature values detected by the room temperature sensors 60 and 70. Each time the temperature value detected by the room temperature sensors 60 and 70 is transmitted to the air conditioning management device 10, a record is newly added to the transition history database 12b.

  As shown in FIG. 4, the transition history database 12b has an indoor unit ID field, a detection date field, and a detection temperature field. The temperature value detected by the room temperature sensors 60 and 70 is stored in the detected temperature field. In the indoor unit ID field, an indoor unit ID for identifying the indoor unit 30 to which the room temperature sensors 60 and 70 that have detected the temperature value stored in the detected temperature field are connected is stored. The detection date / time field stores a time stamp when the indoor unit 30 identified by the indoor unit ID stored in the indoor unit ID field receives a room temperature value from the room temperature sensors 60 and 70.

<Diagnosis process in air-conditioning management device>
Hereinafter, with reference to FIG. 5, the diagnosis process of the attachment position of the room temperature sensors 60 and 70 performed in the air-conditioning management apparatus 10 will be described. The diagnosis process shown in FIG. 5 is a process executed in the air conditioning management device 10 once a day at midnight, and in this diagnosis process, each indoor unit 31, 32a, 32b,..., 33a, 33b. ,..., The following steps S1 to S6 are repeated.

  In step S1, the control unit 11 refers to the change history database 12a stored in the storage unit 12, and the change date stored in the change date field is from midnight of the previous day to midnight of the current day. A record that contains an indoor unit ID that is included in the period and that identifies the indoor unit 30 currently selected in the indoor unit ID field is extracted.

  Next, in step S2, the control unit 11 sets the set temperature of the indoor unit 30 twice per hour during the period from midnight of the previous day to midnight of the current day based on the record extracted in step S1. It is determined whether or not the above has been changed. When the set temperature changing operation is counted in step S2, if the set temperature is changed twice or more per minute, the last changing operation among the plurality of changing operations is performed. Only the change operation is valid, and the previous change operations are invalid change operations. That is, a plurality of set temperature changing operations performed within one minute are counted as one changing operation. In addition, when the change range of the set temperature for one hour is within 1 ° C., it is determined that the change operation is caused by the user's preference, and the change operation performed during this one hour is counted. Not. That is, for example, when the set temperature is lowered from 26 ° C. to 25 ° C. in one hour and further raised to 26 ° C., the change width for 1 hour is 1 ° C., and the number of change operations is 0 times. It is said. In addition, when the set temperature is lowered from 26 ° C to 25 ° C in one hour and further lowered to 24 ° C, the range of change for 1 hour is 2 ° C, and the number of change operations is two. The If the controller 11 determines that the set temperature has been changed twice or more in one hour, the diagnostic process proceeds to step S5. If it is determined that the set temperature has not been changed, the diagnostic process proceeds to step S5. Proceed to S3.

  In step S3, the control unit 11 refers to the transition history database 12b stored in the storage unit 12, and the detection date and time stored in the detection date and time field is from midnight of the previous day to midnight of the current day. A record that is included in the period and that stores an indoor unit ID that identifies the indoor unit 30 in the indoor unit ID field is extracted.

  Next, in step S4, based on the records extracted in step S1 and step S3, the control unit 11 continues a predetermined state for 3 hours or more in the period from midnight of the previous day to 2:00 of that day. Determine whether there is a problem. The “predetermined state” referred to here is a temperature detected by the room temperature sensors 60 and 70 corresponding to the indoor unit 30 when the set temperature of the indoor unit 30 is set near the upper limit value or the lower limit value thereof. The value is in the vicinity of the set temperature and the power consumption is less than 80% of the rated power. In addition, “near the upper limit value” here means a temperature range from the upper limit value minus 2 ° C. to the upper limit value, and “near the lower limit value” means a temperature range from the lower limit value to the lower limit value plus 2 ° C. It means a range, and “near set temperature” means a temperature range of set temperature plus or minus 1 ° C. When the control unit 11 determines that the predetermined state has been continued for 3 hours or more, the diagnosis process proceeds to step S6. When it is determined that the diagnosis process is not performed, the diagnosis process is not diagnosed. Step S1 is repeated or finished for other indoor units 30.

  In step S <b> 5, the control unit 11 causes the display 14 to display a warning message indicating that the room temperature sensors 60 and 70 corresponding to the indoor unit 30 are attached at inappropriate positions. At this time, information specifying the indoor unit 30 is displayed on the display 14 so that the administrator who sees the warning message can easily check the installation status of the room temperature sensors 60 and 70 (for example, the indoor unit 30 Information indicating which room R1, R2, R3,... Is installed is output. In addition, the control unit 11 responds to a request from the administrator so that the administrator or the user can examine in detail the reason why the room temperature sensors 60 and 70 are determined to be attached at an inappropriate position. Thus, information related to the indoor unit 30 can be displayed on the display 14. The information related to the indoor unit 30 includes a history of changing the set temperature of the indoor unit 30 for the past one day from midnight of the previous day to midnight of the current day.

  Furthermore, in step S5, the control part 11 sounds a warning sound via the speaker 15, and alerts the manager who is resident in the management room R1.

  In step S6, as in step S5, the control unit 11 displays a warning message on the display 14 indicating that the room temperature sensors 60 and 70 corresponding to the indoor unit 30 are attached at inappropriate positions. Let At this time, as in the case of step S5, the indoor unit 30 is identified on the display 14 so that the administrator who sees this warning message can easily confirm the installation status of the room temperature sensors 60 and 70, etc. (For example, information indicating in which room R1, R2, R3,... The room unit 30 is installed) is output. In addition, the control unit 11 responds to a request from the administrator so that the administrator or the user can examine in detail the reason why the room temperature sensors 60 and 70 are determined to be attached at an inappropriate position. Thus, information related to the indoor unit 30 can be displayed on the display 14. The information related to the indoor unit 30 includes the history of changing the set temperature of the indoor unit 30 and the room temperature sensors 60 and 70 for the past one day from midnight of the previous day to midnight of the current day. And a history of temperature values detected at.

  Furthermore, in step S6, the control part 11 sounds a warning sound via the speaker 15 similarly to the case of step S5, and alerts the administrator who is occupying the management room R1.

  Then, after the above steps S1 to S6 are repeated for all the indoor units 31, 32a, 32b,..., 33a, 33b,.

<Features>
(1)
In the air conditioning management device 10, whether or not the set temperature of the indoor unit 30 has been changed twice or more per hour based on the history of operation for changing the set temperature of the indoor unit 30 stored in the storage unit 12. Is judged. If there has been a change, a warning message and a warning sound are output via the display 14 and the speaker 15. Therefore, when the set temperature of the indoor unit 30 is frequently changed by the user, the administrator is informed that the room temperature sensors 60 and 70 are attached to or suspected of being inappropriate. As a result, the manager or the user can quickly cope with the position failure of the room temperature sensors 60 and 70.

(2)
Further, in the air conditioning management device 10, the indoor unit 30 is based on the history of temperature values detected by the room temperature sensors 60 and 70 stored in the storage unit 12 in addition to the history of changing the set temperature of the indoor unit 30. Is set in the vicinity of the upper limit value or the lower limit value, the temperature value detected by the room temperature sensors 60 and 70 is in the vicinity of the set temperature, and the power consumption is less than 80% of the rated power. It is determined whether or not it has been continued for more than an hour. And when it has been continued, a warning message and a warning sound are output via the display 14 and the speaker 15. Therefore, when the set temperature of the indoor unit 30 and the temperature detected by the room temperature sensors 60 and 70 are stuck near the upper limit value or the lower limit value and the power consumption is low, the room temperature sensors 60 and 70 The administrator is informed that it is attached or suspected of being attached to an inappropriate position, and the administrator or the user can quickly cope with the position failure of the room temperature sensors 60 and 70. That is, the air-conditioning management apparatus 10 appropriately indicates the room temperatures of the rooms R1, R2, R3,... By exposing the room temperature sensors 60, 70 to air cooled or heated in the indoor unit 30. It can detect inappropriate situations that are no longer possible.

<Modification>
(1)
The diagnostic processing executed in the air conditioning management device 10 may be as shown in FIG.

  The diagnosis process shown in FIG. 6 is a process executed in the air-conditioning management apparatus 10 once a day at midnight at the same time as the diagnosis process shown in FIG. 5. In the diagnosis process shown in FIG. Steps S3, S4, S6, S21, S22, and S25 are repeated for 31, 32a, 32b,..., 33a, 33b,.

  In step S21, the control unit 11 refers to the change history database 12a stored in the storage unit 12, and the change date stored in the change date field is included in the most recent one week period. In addition, a record in which the indoor unit ID for identifying the currently selected indoor unit 30 is stored in the indoor unit ID field is extracted.

  Next, in step S22, the control unit 11 indicates that, based on the record extracted in step S21, the set temperature of the indoor unit 30 has been changed at a rate of twice or more per hour in the same time zone. Determine if there are more than 5 days in a week. When the set temperature changing operation is counted in step S22, as in the case of step S2, if the set temperature is changed twice or more in one minute, a plurality of times are set. Of the change operations, only the last change operation is a valid change operation, and previous change operations are invalid. That is, a plurality of set temperature changing operations performed within one minute are counted as one changing operation. In addition, when the change range of the set temperature for one hour is within 1 ° C., it is determined that the change operation is caused by the user's preference, and the change operation performed during this one hour is counted. Not. That is, for example, when the set temperature is lowered from 26 ° C. to 25 ° C. in one hour and further raised to 26 ° C., the change width for 1 hour is 1 ° C., and the number of change operations is 0 times. It is said. In addition, when the set temperature is lowered from 26 ° C to 25 ° C in one hour and further lowered to 24 ° C, the range of change for 1 hour is 2 ° C, and the number of change operations is two. The If the control unit 11 determines that there are five or more days, the diagnosis process proceeds to step S25. If it is determined that there is no more than five days, the diagnosis process proceeds to step S3.

  In step S25, as in step S5, the control unit 11 displays a warning message on the display 14 indicating that the room temperature sensors 60 and 70 corresponding to the indoor unit 30 are attached at inappropriate positions. Display. Further, at this time, as in the case of step S5, the indoor unit 30 is displayed on the display 14 so that the administrator who sees the warning message can easily confirm the installation status of the room temperature sensors 60 and 70. Information to be identified (for example, information indicating in which room R1, R2, R3,... The room unit 30 is installed) is output. In addition, as in the case of step S5, the control unit 11 allows the administrator or the user to examine in detail the reason why the room temperature sensors 60 and 70 are determined to be attached at an inappropriate position. As described above, information related to the indoor unit 30 can be displayed on the display 14 in response to a request from the administrator. The information related to the indoor unit 30 includes a history of changing the set temperature of the indoor unit 30 for the past one week. At this time, the display 14 displays a time zone in which it is determined in step S22 that the set temperature has been changed at a rate of twice or more per hour. Furthermore, in step S25, the control part 11 sounds a warning sound through the speaker 15 similarly to the case of the said step S5, and alerts the manager who is resident in the management room R1.

  Then, after all of the indoor units 31, 32a, 32b,..., 33a, 33b,..., The above steps S3, S4, S6, S21, S22, and S25 are repeated, diagnostic processing is performed. Ends.

  Thus, in this modification, when the set temperature is frequently changed or tends to be changed in the same time zone every day, that is, when the set temperature is frequently changed periodically every day or such When it exists in the tendency, the defect of the attachment position of the room temperature sensors 60 and 70 is alert | reported. Therefore, the air-conditioning management apparatus 10 according to this modification increases or decreases the amount of sunlight irradiated to the room temperature sensors 60 and 70 every day or almost every day, or the room temperature sensors 60 and 70 blow on the draft air. It is possible to accurately detect such situations.

(2)
In step S2 of the above embodiment, the number of days in which the set temperature has been changed twice or more per hour is a predetermined number of days (for example, five days or more) in the past several days (for example, one week). In this case, the process may proceed to step S5 for the first time. Further, in step S4 of the above embodiment, there are more than a predetermined number of days (for example, five days or more) in the past several days (for example, one week) in which the predetermined state has been continued for three hours or more. In this case, the process may proceed to step S6 for the first time. That is, in the case of the first embodiment, there is a possibility that an abnormality is notified every day, but in the case of this modification, since the abnormality is notified only after accumulation, the mounting positions of the room temperature sensors 60 and 70 are poor. In spite of this, the possibility of being notified by mistake is reduced, and the burden on the administrator is reduced.

(3)
“At least twice an hour”, “1 minute”, “1 hour”, “1 ° C.” in step S2 (including modification (2)) of the above embodiment, “3 hours” in step S4, “80% The specific numerical values shown in the description of the above embodiment can be changed to other arbitrary numerical values. “1 week” in step S21, “5 days” in step S22, “more than twice an hour”, “1 minute”, “1 hour”, “1 ° C.”, etc. The same applies to typical numerical values. These numerical values may be set in advance, or may be set and changed freely by an administrator or the like.

(4)
In step S2 of the above embodiment (including the case of modification (2)), the control unit 11 causes the set temperature of the indoor unit 30 to be a predetermined frequency (in the description of the above embodiment, “twice an hour”). It is possible to determine whether or not it has been changed more than N times (N is an integer of 2 or more). The same applies to step S22 of the modification (1).

(5)
The diagnostic processing may be executed once a day, not at midnight, but at a predetermined time interval at a predetermined time interval. The same applies to the modifications (1) and (2).

(6)
The diagnostic process may be executed not by the air conditioning management apparatus 10 that performs various monitoring / control of the air conditioning apparatus 2 but by a dedicated diagnostic apparatus. Further, such a dedicated diagnostic device can be attached later by connecting to existing equipment such as the air conditioner 2 or the air conditioning management device 10 already installed in the office building 1. Also good. The same applies to the modifications (1) and (2).

(7)
The air-conditioning management apparatus 10 may be connected to a service center that exists remotely from the office building 1 via a public line such as an Internet line. In this case, the diagnosis process may be executed not on the air conditioning management device 10 but on a server or the like installed in the service center. The same applies to the modifications (1) and (2).

  The present invention has an effect of being able to detect a defect in the mounting position of a room temperature sensor of an air conditioner, and a diagnostic device for diagnosing the mounting position of the room temperature sensor of the air conditioner and an air conditioner having such a diagnostic function. It is useful as a management device.

The figure which shows a mode that it installed in the office building with the air-conditioning management apparatus which concerns on one Embodiment of this invention. The block diagram of the air-conditioning management apparatus which concerns on one Embodiment of this invention. The figure which shows the data structure of the change history database which concerns on one Embodiment of this invention. The figure which shows the data structure of the transition history database which concerns on one Embodiment of this invention. The flowchart which shows the detail of the diagnostic process which concerns on one Embodiment of this invention. The flowchart which shows the detail of the diagnostic process which concerns on the modification of this invention.

2 Air conditioner 10 Air conditioning management device (diagnostic device)
11 Control unit (judgment unit)
12 storage unit 12a change history database 12b transition history database 14 display (notification unit)
15 Speaker (notification part)
30 Indoor unit 40 Remote control 50 Outdoor unit 60, 70 Room temperature sensor

Claims (9)

A diagnostic device (10) for diagnosing a mounting position of a room temperature sensor (60, 70) of an air conditioner (2),
A storage unit (12) for storing change history data (12a) of a set temperature of the air conditioner (2);
A determination unit (11) for determining whether the set temperature is changed at a predetermined frequency or more based on the change history data (12a);
An informing unit for informing that the mounting position of the room temperature sensor (60, 70) is defective when the determining unit (11) determines that the set temperature has been changed at the predetermined frequency or more. 14, 15)
A diagnostic device (10) comprising: The determination unit (11) determines that the set temperature has been changed at the predetermined frequency or more when the set temperature has been changed a predetermined number of times or more within a first time interval.
The diagnostic device (10) according to claim 1. In the determination, when the set temperature is changed a plurality of times within a second time interval shorter than the first time interval, the determination unit (11) sets the plurality of changes as one change. To count,
The diagnostic device (10) according to claim 2. The determination unit (11) does not count the change when the change range of the set temperature is smaller than a predetermined temperature range in the determination.
The diagnostic device (10) according to claim 2 or 3. The determination unit (11) determines whether or not the set temperature is changed at the predetermined frequency or more in the same time zone based on the change history data (12a) for a predetermined number of days in the past,
The notification unit (14, 15), when the determination unit (11) determines that the set temperature has been changed at the predetermined frequency or more in the same time zone, the room temperature sensor (60, 70). Informing that the mounting position of is bad,
The diagnostic device (10) according to claim 1. A diagnostic device (10) for diagnosing a mounting position of a room temperature sensor (60, 70) of an air conditioner (2),
A storage unit (12) for storing change history data (12a) of set temperature of the air conditioner (2) and transition history data (12b) of a room temperature value indicated by the room temperature sensor (60, 70);
Based on the change history data (12a) and the transition history data (12b), the set temperature can be set within a predetermined temperature range from the upper limit value of the temperature range that can be set as the set temperature , or as the set temperature. It is set within a predetermined temperature range from the lower limit value of the temperature range and the room temperature value indicated by the temperature sensor (60, 70) is a state showing the value within a predetermined temperature range from the set temperature predetermined A determination unit (11) for determining whether or not it has been continued for a period of
When the determination unit (11) determines that the state has been continued for the predetermined period or longer, a notification unit (notification unit) notifies that the mounting position of the room temperature sensor (60, 70) is defective. 14, 15)
A diagnostic device (10) comprising: The determination unit (11) is configured such that the set temperature is within a predetermined temperature range from an upper limit value of a temperature range that can be set as the set temperature , or within a predetermined temperature range from a lower limit value of the temperature range that can be set as the set temperature. is set, the room temperature value indicated by the temperature sensor (60, 70) is shows a value within a predetermined temperature range from the set temperature, and continues the power consumption is small state over said predetermined time period To determine whether or not
The diagnostic device (10) according to claim 6. An air conditioning management device (10) having a diagnostic function for diagnosing the mounting position of the room temperature sensor (60, 70) of the air conditioner (2),
A storage unit (12) for storing change history data (12a) of a set temperature of the air conditioner (2);
A determination unit (11) for determining whether the set temperature is changed at a predetermined frequency or more based on the change history data (12a);
An informing unit for informing that the mounting position of the room temperature sensor (60, 70) is defective when the determining unit (11) determines that the set temperature has been changed at the predetermined frequency or more. 14, 15)
An air conditioning management device (10) comprising: An air conditioning management device (10) having a diagnostic function for diagnosing the mounting position of the room temperature sensor (60, 70) of the air conditioner (2),
A storage unit (12) for storing change history data (12a) of set temperature of the air conditioner (2) and transition history data (12b) of a room temperature value indicated by the room temperature sensor (60, 70);
On the basis of the change history data (12a) and the transition history data (12b), said set temperature, said set within a predetermined temperature range from the upper limit value of the settable temperature range as the temperature, or configurable temperature as the set temperature range is set within a predetermined temperature range from the lower limit value of, and the room temperature value indicated by the temperature sensor (60, 70) comprises state from the set temperature indicates a value within a predetermined temperature range is a predetermined A determination unit (11) for determining whether or not it has been continued for a period of time;
When the determination unit (11) determines that the state has been continued for the predetermined period or longer, a notification unit (notification unit) notifies that the mounting position of the room temperature sensor (60, 70) is defective. 14, 15)
An air conditioning management device (10) comprising:

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