Refrigeration – With indicator or tester
Patent
1995-12-22
1997-12-16
Bennett, Henry A.
Refrigeration
With indicator or tester
165 111, 165209, 236 94, F25B 4900
Patent
active
056972245
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to an operation control device for air conditioner and particularly relates to measures for indicating an operation anomaly or the like.
BACKGROUND ART
In general, there has been an air conditioner as disclosed in Japanese Patent Application Laying Open Gazette No.2-85633, in which a plurality of indoor units are connected to a single remote controller and the plurality of indoor units are controlled in units of groups by the remote controller.
Further, unit numbers are assigned to the indoor units respectively and control signals are transmitted and received between each of the indoor units and the remote controller according to the unit numbers.
Furthermore, when unit numbers are assigned to the indoor units respectively at the time of installation or the like of the indoor units, the unit numbers are displayed on the remote controller in order and at the same time indoor fans are activated in correspondence to the display of the unit numbers so that it is easy to examine whether the unit numbers stored in the remote controller is matched with the indoor units whose unit numbers have been assigned respectively.
In the above-mentioned air conditioner, the indoor fans are activated for examination of the assignment of unit numbers. However, at the time when an anomaly or the like occurs in the indoor unit, no measure such as an activation of the indoor fan or the like is taken for location of the indoor unit.
More specifically, at the time when something is wrong with a motor-operated expansion valve of the indoor unit and an anomaly occurs in a drain pump, the indoor unit outputs an anomalous condition signal to the remote controller. When receiving the anomalous condition signal, the remote controller only displays the unit number of the indoor unit in which the anomaly occurs and an anomaly code.
Thus, the indoor unit in an anomalous condition gives no indication though the remote controller displays the unit number. Therefore, in order to locate the indoor unit in an anomalous condition, it is necessary to open the panels of the indoor units one by one and obtain the respective unit numbers of the indoor units. As a result, it takes much time to locate the indoor unit in an anomalous condition. This decreases in serviceability the conventional air conditioner.
The present invention has been made in view of the foregoing problem and has its object of increasing in serviceability an air conditioner by allowing a prompt location of an indoor unit in an anomalous condition or the like.
DISCLOSURE OF INVENTION
To attain the above-mentioned object, measures taken in the present invention are characterized by causing an indication in an air conditioning unit in an anomalous condition or the like when the air conditioning unit outputs an anomalous condition signal or the like.
More specifically, as shown in FIG. 1, a measure taken in the invention of claim 1 premises an operation control device for air conditioner having: a plurality of air conditioning units (3, 3, . . . ) for executing air conditioning operations; and single control means (4) which is connected to each of the air conditioning units (3, 3, . . . ) and controls the air conditioning units (3, 3, . . . ) in units of groups.
The control means (4) is provided with: unit memory means (45) for receiving an anomalous condition signal from the air conditioning unit (3) in operation anomaly to store a unit number of the air conditioning unit (3); check signal input means (42) for inputting a check signal for checking on the location of the air conditioning unit (3) in operation anomaly; and indication signal output means (46) for outputting an indication signal, at the time of input of the check signal from the check signal input means (42) in the case that the unit memory means (45) stores the unit number of the air conditioning unit (3), to the air conditioning unit (3) having the unit number.
In addition, each of the air conditioning units (3, 3, . . . ) is provided with: anomaly determining means (32) f
REFERENCES:
patent: 4674291 (1987-06-01), Kitauchi
patent: 5005366 (1991-04-01), Murashige
patent: 5165465 (1992-11-01), Kenet
Bennett Henry A.
Daikin Industries Ltd.
Ferguson Jr. Gerald J.
Tinker Susanne C.
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