JP2012127603A - Air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning system that can simply and immediately identify, when a trouble has occurred in indoor units, the indoor unit with the trouble.SOLUTION: A multi-air conditioner system includes: a plurality of outdoor units 11 each of which includes an outdoor unit fan 13; a plurality of indoor units 12 connected to each of the outdoor units 11; and a control device 15 for intermittently driving, when a trouble has occurred in any of the outdoor units 11, the outdoor unit fan 13 of the outdoor unit 11 with the trouble at a predetermined interval.

Description

  The present invention relates to an air conditioning system, and more particularly to an air conditioning system in which a plurality of outdoor units are arranged side by side at the same place.

  A multi air conditioner system in which a plurality of indoor units are connected to one outdoor unit is widely installed in offices and various commercial facilities. In recent years, multi-air conditioner systems have shifted from a system that uses a small number of large outdoor units to a system that uses a large number of slightly smaller outdoor units. When an abnormality (failure) occurs in the system, the location of the abnormality is identified. It may be difficult to do.

  For example, in Patent Document 1, centralized management of failure status data is performed independently of and simultaneously with operation status data in order to reduce the burden on the operator's operation and enable the failure status of outdoor units and indoor units to be checked at a glance. An air conditioner system to be displayed on a display unit of the apparatus is disclosed. Patent Document 2 also points out exactly what is wrong when a hardware failure occurs, failure diagnosis that shortens repair time, eliminates user discomfort, and reduces the burden on service personnel. An attached air conditioner is disclosed.

JP 2008-170047 A

  According to the technology of each of the above patent documents, when an abnormality occurs in the system, it can be expected to reduce the burden on an inspection worker or the like. However, in the technology of each of the above-mentioned patent documents, when an abnormality occurs in the outdoor unit, measures for easily and quickly identifying the abnormal outdoor unit are not sufficiently taken.

  That is, in a general conventional multi-air conditioner system, when an abnormality occurs in any of the outdoor units, the abnormality code and the outdoor unit address from which the abnormality occurred are displayed on the operation remote controller of the corresponding indoor unit. Since the address is assigned to the control panel inside the outdoor unit, it is necessary to open and check the covers of the outdoor units one by one, which is a heavy burden on the inspection operator.

  That is, the present invention is to provide an air conditioning system that can easily and quickly identify an abnormal outdoor unit when an abnormality occurs in the outdoor unit.

An air conditioning system according to the present invention is an air conditioning system including an outdoor unit including a fan and a plurality of indoor units connected to the outdoor unit. When an abnormality occurs in the outdoor unit, the abnormality of the outdoor unit in which the abnormality has occurred It includes a control device for intermittently operating the fan at predetermined intervals.
According to the said structure, the outdoor unit of the abnormality generation | occurrence | production origin can be easily specified by the simple method of carrying out intermittent operation of the fan of the outdoor unit in which abnormality generate | occur | produced at predetermined intervals. Further, it is not necessary to provide new hardware such as a warning light. For example, the outdoor unit fan can be intermittently operated when an abnormality occurs by simple and inexpensive improvement of rewriting the control program of the control device.

  The air conditioning system according to the present invention includes an operation remote controller connected to the indoor unit, and the control device is configured to display an abnormality of the outdoor unit on the corresponding operation remote controller when an abnormality occurs in the outdoor unit. It is preferable.

  Preferably, the operation remote controller includes an inspection button, and the control device is configured to intermittently operate the fan of the outdoor unit in which an abnormality has occurred when the inspection button is operated.

An air conditioning system according to the present invention includes, for example, a plurality of outdoor units each including a fan, and a plurality of indoor units connected to each outdoor unit. An abnormality occurs in any of the outdoor units. In this case, the control unit includes a control device that intermittently operates the fan of the outdoor unit in which the abnormality has occurred at a predetermined interval.
Further, the control device for an air conditioning system according to the present invention is, for example, a control device for an air conditioning system including a plurality of outdoor units each including a fan and a plurality of indoor units connected to each outdoor unit. When an abnormality occurs in any of the above, the fan of the outdoor unit in which the abnormality has occurred is intermittently operated at a predetermined interval.
According to this configuration, it is possible to easily identify the outdoor unit in which an abnormality has occurred from among a plurality of outdoor units by a simple method of intermittently operating the fan of the outdoor unit in which the abnormality has occurred at a predetermined interval. it can.

  According to the air conditioning system of the present invention, when an abnormality occurs in the outdoor unit, the outdoor unit having the abnormality can be identified easily and quickly. That is, the air conditioning system according to the present invention is useful for the user because the work load on the inspection worker can be reduced and the inspection work time can be shortened.

It is a figure which shows the structure of the air conditioning system which is embodiment of this invention. It is a figure which shows one outdoor unit and indoor unit which comprise the system of FIG. 2 is a flowchart illustrating a control procedure from the occurrence of an abnormality in an outdoor unit to the identification of an abnormality occurrence source in the system of FIG.

Embodiments of an air conditioning system according to the present invention will be described below in detail with reference to the drawings.
In addition, in embodiment, although the multi air conditioner system 10 which can manage the some outdoor unit 11 and the some indoor unit 12 collectively by the centralized controller which is not illustrated is illustrated, application of this invention is not limited to this, For example, the same A plurality of outdoor units 11 installed side by side on a place (such as a rooftop) may constitute an independent multi-air conditioner system.

  As shown in FIG. 1, the multi-air conditioner system 10 includes a plurality of outdoor units 11 each including an outdoor unit fan 13 and a plurality of indoor units 12 connected to each outdoor unit 11, as will be described in detail later. This is a system that can easily and quickly perform an abnormality check of the outdoor unit 11. The outdoor unit 11 and each indoor unit 12 are connected by a pipe 14, and air conditioning is performed by changing the pressure of the refrigerant flowing through the pipe 14 to absorb and release heat. In FIG. 1, ten outdoor units 11 are installed side by side on the roof, and three indoor units 12 are connected to each outdoor unit 11, but this is merely an example, In addition, more outdoor units 11 and indoor units 12 are installed in an office building or the like having a large floor area.

  Each outdoor unit 11 includes an outdoor unit fan 13 that sends wind (air) to the outdoor heat exchanger as described above. Each outdoor unit 11 has an outdoor heat exchanger for exchanging heat between the refrigerant passing through the inside and air, a compressor for compressing and pressurizing the refrigerant, and a piping path according to the operating condition (cooling / heating). It has a four-way switching valve that performs switching, an expansion valve that controls the flow rate of refrigerant, and the like (both not shown).

  Each outdoor unit 11 has a control device 15 (outdoor unit control base) that controls the operation of each component of the outdoor unit 11 based on a signal from an operation remote controller 16 described later or a centralized controller (not shown). Each outdoor unit 11 is provided with various sensors such as a pressure gauge, a thermometer, a flow meter, and an ammeter in order to perform feedback control and abnormality detection.

  The indoor unit 12 is an indoor heat exchanger that exchanges heat between the refrigerant passing through the interior and the air, an indoor unit fan that sends air to the indoor heat exchanger to exchange heat, and sends the heat-exchanged air to the room, And an expansion valve (not shown) for controlling the flow rate of the refrigerant. The indoor unit 12 is also provided with an indoor unit control base for controlling the operation of each component of the indoor unit 12 based on signals from an operation remote controller 16 (to be described later) or a central controller (not shown).

  Here, with reference to FIG. 2, the structure of the multi air-conditioning system 10 is further explained in full detail. FIG. 2 is a diagram showing one outdoor unit 11 and one indoor unit 12 that constitute the system of FIG.

  As shown in FIG. 2, the multi air conditioner system 10 includes an operation remote controller 16 connected to each indoor unit 12 or several indoor units 12. The operation remote controller 16 is a controller that is operated by a general user, and performs operations such as operating conditions, room temperature, a display unit 17 that displays an abnormality code, which will be described later, ON / OFF of the indoor unit 12, and a set temperature. And an inspection button 19 that is operated by an inspection operator when the outdoor unit 11 is inspected abnormally. For example, when a general user operates the operation unit 18, an operation signal (for example, information such as set temperature) is transmitted to the control device 15 corresponding to the indoor control base and the outdoor control base, and each of the outdoor unit 11 and the indoor unit 12 is The operation of the component is adjusted based on the operation signal.

  The inspection button 19 is an operation unit for starting an intermittent operation described later when an abnormality occurs in the outdoor unit 11 and an abnormality code or the like is displayed on the display unit 17, and is normally operated by an inspection operator. Is done. In the form illustrated in FIG. 2, the inspection button 19 is provided on the front portion of the operation remote controller 16, but the installation location, button shape, and the like are not particularly limited. It should be noted that intermittent operation is not executed even if the inspection button 19 is operated except when an abnormality occurs in the outdoor unit 11.

  As described above, the multi-air conditioner system 10 is a system that can easily and quickly check for an abnormality in the outdoor unit 11. When an abnormality occurs in the outdoor unit 11, the outdoor unit 11 that is the source of the abnormality is displayed. It is a system that can be easily identified. As a means (module) for implementing the function, the control device 15 of the multi air conditioner system 10 includes an abnormality detection means 20, an abnormality display means 21, and an intermittent operation means 22.

  The control device 15 includes a CPU, an input unit for control parameters, a recording unit for storing control parameters, a control program, and the like, an input / output port, and the like. The functions of the above means can be realized by executing software. For example, by inputting software including the above means from the input port, the functions of the above means can be realized even in an existing system (existing hardware).

  The abnormality detection means 20 has a function of detecting an abnormality (failure) occurring in the outdoor unit 11 based on detection values of various sensors installed in the outdoor unit 11. Specifically, the abnormality detection means 20 compares the detection value input from each sensor with a preset reference value for determining whether the detection value is normal or abnormal, Determine presence or absence. When an abnormality is confirmed, an abnormality code determined in advance corresponding to the abnormality is output to the abnormality display means 21.

  Examples of abnormalities occurring in the outdoor unit 11 include pressure abnormalities (high pressure abnormalities, low pressure abnormalities), refrigerant shortage / overfilling abnormalities, compressor shell temperature abnormalities, control valve failures, inverter abnormalities, and the like. For each abnormality, the above abnormality code is set.

  The abnormality display means 21 has a function of acquiring the abnormality code, attaching the address of the outdoor unit 11 that is the source of the abnormality to the abnormality code, and transmitting it to the corresponding operation remote controller 16. Then, the abnormality code and the outdoor unit address from which the abnormality has occurred are displayed on the display unit 17 of the operation remote controller 16. The corresponding operation remote controller 16 is an operation remote controller 16 that operates the indoor unit 12 connected to the outdoor unit 11 that is the source of the abnormality, that is, an operation remote controller 16 that is connected to the outdoor unit 11 that is the source of the abnormality via the indoor unit 12. Means. Moreover, it is preferable that the abnormality display means 21 performs abnormality display also on a centralized remote controller (not shown). In addition, when the design layout drawing etc. of an air-conditioning system are prepared, the abnormal outdoor unit 11 may be able to be specified by the displayed outdoor unit address.

  The intermittent operation means 22 has a function of intermittently operating the outdoor unit fan 13 of the outdoor unit 11 in which an abnormality has occurred when an abnormality is displayed on the display unit 17 and the check button 19 is operated. In other words, the intermittent operation means 22 intermittently operates the outdoor unit fan 13 of the outdoor unit 11 that is the source of the abnormality on the condition that the operation signal of the inspection button 19 is acquired. The intermittent operation setting, for example, the operation / stop interval, etc. is not particularly limited, but can be distinguished from the normal operation of the outdoor unit fan 13 of the outdoor unit 11 among the many outdoor units 11 arranged side by side. It is necessary to set it so that the abnormal outdoor unit 11 can be easily identified. For example, the setting which repeats driving | operation / stop of the outdoor unit fan 13 every 10 seconds can be illustrated.

  Here, with reference to the flowchart of FIG. 3, the control method at the time of abnormality of the outdoor unit 11 by the multi air conditioner system 10 is demonstrated.

  First, it is determined whether there is an abnormality in each outdoor unit 11 (abnormality determination) based on detection values acquired from a plurality of sensors installed in each outdoor unit 11 (S10). This procedure is executed by the function of the abnormality detection means 20, and when an abnormality is confirmed in any of the outdoor units 11, an abnormality code corresponding to the abnormality is output to the abnormality display means 21 of the abnormality occurrence source. The

  When an abnormality is confirmed in any of the outdoor units 11 in S10, an abnormality code is displayed on the display unit 17 of the corresponding operation remote controller 16 (S11). This procedure is executed by the function of the abnormality display means 21. The abnormality display means 21 displays the outdoor unit address of the abnormality occurrence source together with the abnormality code.

  In S11, an operation signal of the inspection button 19 of the operation remote controller 16 in which the abnormality code or the like is displayed on the display unit 17 is acquired (S12), and the outdoor unit fan 13 of the outdoor unit 11 from which the abnormality has occurred is set at a predetermined interval. Operate intermittently. This procedure is executed by the function of the intermittent operation means 22. That is, the intermittent operation means 22 operates the corresponding outdoor unit fan 13 intermittently on the condition that the operation signal of the check button 19 is acquired.

  As described above, according to the multi-air conditioner system 10, when an abnormality occurs in any of the outdoor units 11, the outdoor unit fan 13 of the outdoor unit 11 in which the abnormality has occurred is intermittently operated at a predetermined interval. In other words, since it is possible to perform a special operation different from the outdoor unit fan 13 that is normally operated, it is possible to perform a simple and inexpensive improvement without adding new hardware, and from among the many outdoor units 11 installed side by side. The outdoor unit 11 that is the source of the abnormality can be easily identified.

  In addition, the said embodiment can be design-changed in the range which does not impair the objective of this invention.

For example, in the above description, the outdoor unit fan 13 is intermittently operated on the condition that the check button 19 is operated. However, when the abnormality code is displayed on the display unit 17 of the corresponding operation remote controller 16 or the abnormality When an abnormality of the outdoor unit 11 is confirmed by the detection means 20, the outdoor unit fan 13 of the outdoor unit 11 that is the source of the abnormality may be intermittently operated.
In the above description, the control device 15 corresponding to the outdoor unit control panel has been described as having the intermittent operation means 22 or the like, but the indoor unit control panel or a control device installed in another place has the intermittent operation means 22 or the like. You may do it.
In the above description, the abnormal coat and the outdoor unit address are displayed on the display unit 17 as the abnormal display of the outdoor unit 11. However, for example, only the abnormal code may be displayed. Words such as “compressor shell temperature abnormality” may be displayed.

  DESCRIPTION OF SYMBOLS 10 Multi air-conditioning system, 11 Outdoor unit, 12 Indoor unit, 13 Outdoor unit fan, 14 Piping, 15 Control apparatus, 16 Operation remote control, 17 Display part, 18 Operation part, 19 Check button, 20 Abnormality detection means, 21 Abnormality display means 22 Intermittent operation means.

Claims (3)

An outdoor unit including a fan,
A plurality of indoor units connected to the outdoor unit;
In an air conditioning system comprising:
An air conditioning system comprising: a control device that intermittently operates a fan of an outdoor unit in which an abnormality has occurred at a predetermined interval when an abnormality occurs in the outdoor unit. The air conditioning system according to claim 1,
It is equipped with an operation remote control connected to the indoor unit,
The control device displays an abnormality of the outdoor unit on a corresponding operation remote controller when an abnormality occurs in the outdoor unit. The air conditioning system according to claim 2,
The operation remote control includes an inspection button,
The control device causes the fan of the outdoor unit in which an abnormality has occurred to intermittently operate at a predetermined interval when the check button is operated.

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