JPH0781732B2 - Refrigerator / air conditioner operation status monitoring device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an improvement of a refrigerating / air-conditioning machine operating condition monitoring device for managing the operating status of a refrigerating / air-conditioning machine.

[Conventional technology]

FIG. 6 and FIG. 7 are block diagrams of a conventional refrigeration / air-conditioner operation state monitoring device, and FIG. 8 is an example of a screen display of a CRT connected to a conventional central control device. In the figure, (1) is a central control unit, which will be described later.
n) which manages the data from the device and outputs a control signal to the signal collecting and storing devices (21) to (2n), and transmits and receives data to and from the signal collecting and storing devices (21) to (2n). / F (6), CRT (2) that analyzes and displays the data of the signal collection storage devices (21) to (2n) and a keyboard (3) that calls the analysis graph and data, a line printer (4) that outputs the data, and the data A storage device (5) for storing is connected. (21), (22), ..., (2n)
Is a signal collection storage device, and the transmission lines (11), (12), ...
A central control unit (1n) that is connected to the central control unit (1) to perform transmission with the central control unit (1), manage refrigeration and air conditioner operation status signals, and control and calculate input / output signals. Processing device (41), temperature detector (31) for detecting temperature of each part of refrigeration and air conditioner, pressure detector (32) for detecting pressure of each part, protective device (for example, high pressure switch).
Interface (43) for inputting the input data from the contact state detector (34) that detects whether the protective device activation detector (33) that detects the operation or return signal of the compressor or the compressor is operating. , RA that stores the above input data
M (44), display section (45) for displaying abnormalities such as operation of protection devices for refrigeration and air conditioners, operation display, etc., transmission interface (46) for transmission with central control unit (1), refrigeration / air conditioning Output control interface (47) that outputs control signals such as operation ON and OFF commands to the machine control switch (35) and clock pulse generation that synchronizes data transmission and reception to the input I / F, output I / F and transmission I / F It was composed of vessels (48). The central control unit (1) is connected to each signal collection storage unit (21)-
Analyze the input data from (2n). If an abnormality such as the operation of the protection device of the refrigeration / air conditioner occurs, display the abnormality on the CRT (2) as shown in Fig. 8 and notify the abnormality. Was configured. In the case of the example, I was informed that Unit 2 was abnormal. At the same time, the abnormality history (abnormality contents) is stored.

[Problems to be Solved by the Invention]

With the above-mentioned configuration, an abnormality due to the activation of the protection device for the refrigeration / air conditioner could be immediately detected, and the service shop could be notified. However, it is possible to search past abnormality contents (pressure switch operation etc.) at the time of service, but it is difficult to determine whether this treatment is appropriate because it is not known what kind of service treatment was performed at the time of abnormal operation in the past. Atsuta

The present invention has been made to solve the above-mentioned problems, and when a protective device is activated and an abnormality is reported, the operation of the refrigeration / air-conditioning system can be taken out so that the contents of the service treatment at the time of the past abnormality can be retrieved. The purpose is to obtain a condition monitoring device.

[Means for Solving the Problems]

The refrigeration / air-conditioner operation state monitoring device according to the present invention is provided with a service action storage means for storing the service action details when an abnormality occurs with the keyboard, and is configured to display the service action details on the CRT with the keyboard. It is a thing.

[Action]

The refrigeration / air-conditioner operating state monitoring device according to the present invention can store the contents of service treatment at the time of abnormality occurrence by the service treatment storage means, and at the time of the next abnormality occurrence,
Since it is possible to call up the contents of service treatment at the time of abnormalities in the past, it can be utilized to estimate the cause of failure of the unit at the time of service.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. The basic structure is the same as that of FIGS. 6 and 7, but as shown in FIG. 1, a service procedure storing means (7) for failing the service procedure contents when an abnormality occurs is provided and a keyboard (3) is used. The contents of past service treatment can be called from the service treatment storing means (7). The operation will be described with reference to FIG. When the protection device of the refrigerator or air conditioner is activated, the input I / F (43) of the signal collection storage device (21)
An abnormal signal is captured by the abnormal signal from the transmission I / F (46) of the signal collection storage device (21) to the transmission I / F (6) of the central control unit (1), and the abnormal display is displayed on the CRT (2). Will be done. According to the abnormal information at this time, a service shop will be dispatched for inspection and repair. After inspection and repair, the service contents are input from the keyboard (3) and stored in the service treatment storage means (5) of the central control unit (1). If the service person presses the F1 key on the keyboard (3) shown in Fig. 3, details of the abnormality (time of abnormality occurrence, which protective device has been activated, etc.) will be displayed on the CRT (2) of the central control unit (1). To be done. Also, if you press the F2 key, you can file the details of the treatment as shown in Fig. 4, and if you press the F3 key as shown in Fig. 5, you can see what kind of service treatment has been done in the past. It is easy to estimate the cause of failure.

〔The invention's effect〕

As described above, in the refrigeration / air-conditioner operating state monitoring device according to the present invention, the service action storage means for storing the service action details at the time of abnormality occurrence of the refrigerator and the air conditioner by the keyboard is provided, and the service action details are displayed by the keyboard. Since it is configured to be displayed on the CRT, when the next abnormality occurs, it is possible to easily find the cause of the failure by comparing it with the contents of the past abnormality treatment.

[Brief description of drawings]

FIG. 1 is a block diagram of a refrigerating / air-conditioning machine operating condition monitoring device according to an embodiment of the present invention, and FIG. 2 is an operation flow chart of a refrigerating / air-conditioning device operating condition monitoring device showing an embodiment of the present invention. Figures 3, 4 and 5 show the CR of the invention
FIG. 6 is an explanatory view of the display of T, FIGS. 6 and 7 are configuration diagrams of a conventional refrigeration / air-conditioner operation state monitoring device, and FIG. 8 is an explanatory view of display of a CRT showing a conventional embodiment. In the figure, (43) is an input interface, (47) is an output interface, (41) is a central processing unit, and (2).
1), (22) to (2n) are signal collection storage devices, (1) is a central control device, (7) is a service treatment storage means, and (2).
Is a CRT and (3) is a keyboard. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] 1. Operation status data of a refrigerator or an air conditioner,
Equipped with an input interface for inputting input signals such as operating status data of the protection device, an output interface for outputting control signals to the refrigerator or air conditioner, and a central processing unit for controlling / calculating the input signals and control signals. A signal collecting / storing device, a storing means for storing the operating condition data and abnormal operating data of the refrigerator or the air conditioner transmitted from the signal collecting / storing device, a CRT for displaying the data, and a keyboard for calling the data. In addition to the central control unit, a service action storing means for storing the service action details at the time of an abnormality occurrence by the keyboard is provided, and the past service action details can be called up at the CRT by the keyboard at the next abnormality occurrence. A refrigeration / air-conditioner operation status monitoring device characterized in that