JPH0730939B2 - Refrigeration air conditioner with operation recording function - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a refrigerating and air conditioning system, and more particularly to a refrigerating and air conditioning system in which an operating state can be easily grasped and a highly reliable operation can be performed.

[Conventional technology]

Mitsubishi Electric Technical Report Vol.57 No.5 (May 1983
As described in (Mon.), there is a device equipped with a self-diagnosis function for preventing a failure of an air conditioner by using a microcomputer. However, in the prior art, this function operates only when the self-diagnosis function is turned on, and no consideration has been given to monitoring the operation status of the device for a long time.

[Problems to be Solved by the Invention] In the above-mentioned conventional technology, the point that the user can easily grasp the progress of the operating condition of the device is insufficiently considered, and the device does not work until the device fails. There was a problem that it was found that there was a problem, and the cause was not clear.

An object of the present invention is to clarify the situation during operation to prevent a failure, and even if a failure should occur, the cause can be promptly investigated.

[Means for solving problems]

For the above-mentioned purpose, a small rewritable operation recording means capable of storing data for a predetermined time is detachably provided in the refrigerating and air-conditioning apparatus, and the control unit of the refrigerating and air-conditioning apparatus continuously stores the operating state in this recording means. It is achieved by

[Action]

The small rewritable operation recording mechanism capable of storing data for a predetermined time constantly records the temperature, pressure, electric input, etc. of the main part in the refrigerating cycle used in the refrigerating and air-conditioning apparatus. Since the operation recording means is endless, it is not necessary to replace the recording medium, and when the recording capacity is full, the operation recording means returns to the original and writes a new operation record. Therefore, if the recording medium is taken out at appropriate time intervals and the content thereof is analyzed, it can be determined whether or not the recording medium is operated in a normal state. For example, it is possible to determine whether the amount of refrigerant in the device is excessive or insufficient. Even if a failure occurs in the device between the time of the analysis of the recording medium and the time of the next analysis, use the analysis device equipped with the file of the final data of the removed recording medium as a database. The failure process can be analyzed by collating with the existing data at the time of failure and using an analysis method such as correlation, and it is possible to promptly identify the cause and respond to the failure.

As the recording medium, a magnetic tape using a magnetic material, a magnetic disk, an optical disk using laser light, an integrated circuit (IC)
An IC card or the like using is conceivable.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. In FIG. 1, 1 is an outdoor unit of an air conditioner,
Reference numeral 2 denotes an indoor unit of the air conditioner, 3 a refrigerant pipe connecting both units, 4 an operation control device, and 5 an IC card incorporated in a part of the operation control device. When the operation is started by the operation control device 4, as shown in the image in FIG. 2, on the IC card 5, on the recording medium 6, the pressures 7 and 8 and the temperature 9 of the device for a predetermined time are shown. , 10 are continuously recorded, and the data is stored in the recording medium 6. When the amount of data to be recorded in the recording medium 6 exceeds the amount of data that can be written in the recording medium 6, the data in the recording medium 6 is rewritten in chronological order, and the recording medium 6 always contains data for a predetermined time from the latest. Saved. This recording medium
Since it is endless, there is no need to replace the recording medium and it can be used continuously for a long time.

Since the present embodiment has the above-mentioned configuration, by checking the contents of the recording medium, it is possible to deal with it before a failure occurs, so that the reliability of the apparatus is improved. In addition, by accumulating a recording medium in which data for cooling in summer and data for heating in winter are respectively stored and collated, it is possible to know the secular change of each part of the device even during operation after a long interval. It is possible to respond to Further, even if the device breaks down, the cause can be easily found, so that the time of discomfort due to the breakdown of the device can be shortened as much as possible.

〔The invention's effect〕

According to the present invention, the operation status of the refrigerating and air-conditioning apparatus can be grasped by the small rewritable operation recording means which is detachably provided in the apparatus. This makes it possible to quickly investigate the cause of a failure and has the effect of increasing the reliability of the device.

[Brief description of drawings]

FIG. 1 is a control system diagram showing an embodiment of the present invention, and FIG. 2 shows a situation in which the operation status of the apparatus of this embodiment is recorded. 1 ... Outdoor unit of air conditioner, 2 ... Indoor unit of air conditioner, 3 ... Connection pipe, 4 ... Operation control device, 5 ...
... IC card, 6 ... Recording medium, 7,8 Example of recording device pressure, 9,10 Example of recording device temperature.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Matsumura 390 Muramatsu, Shimizu City, Shizuoka Prefecture, Hitachi Shimizu Plant (72) Inventor Hiroshi Sato 390, Muramatsu, Shimizu City, Shizuoka Hitachi, Ltd. Shimizu Plant, Ltd. ( 56) References Japanese Unexamined Patent Publication No. 61-41615 (JP, A) Actually developed 58-96442 (JP, U)

Claims (4)

[Claims] 1. A rewritable recording means for recording the operating condition of a refrigerating and air-conditioning apparatus is detachably provided in the controlling device of the refrigerating and air-conditioning apparatus, and the controller continuously records the operating condition in the recording means. A refrigerating and air-conditioning apparatus with an operation recording function, wherein the recording means is capable of storing an operation state for a predetermined time. 2. The refrigerating and air-conditioning apparatus with an operation recording function according to claim 1, wherein the recording means is an IC card having an integrated circuit mounted on a card-shaped medium. 3. The refrigerating and air-conditioning apparatus with an operation recording function according to claim 1, wherein the recording means records on a recording medium by magnetic recording or optical recording. 4. The refrigerating and air-conditioning apparatus with an operation recording function according to claim 3, wherein the recording medium is formed in a disk shape or a tape shape.