JPH07208789A - Air conditioner - Google Patents

Abstract

PURPOSE:To select whether an operation is restarted or not after recovering by detecting a power interruption time by a microcomputer, and altering whether a recovering operation is executed or not by switch setting according to a length of a time stored in a memory. CONSTITUTION:A compressor 2, an indoor fan 3, an outdoor fan 4, etc., of an air conditioner are controlled to be operated or stopped by a printed board 1 in which a microcomputer 6 is placed. If a power source 5 is interrupted or recovered, the microcomputer 6 detects a power interruption time by a circuit for detecting a power interruption time of the board 1, judges an instantaneous power interruption if it is shorter than a time previously stored in a memory of the microcomputer 6, or judges a long time power interruption if it is longer. When the instantaneous interruption is judged, setting of a switch 7 is read, while the long time interruption is judged, setting of a switch 8 is read, and whether a recovering operation is executed or not is decided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air having a power recovery operation function that automatically restarts operation in accordance with the memory of the operation state before the stop when the power is stopped and then supplied again. Regarding the harmony device.

[0002]

2. Description of the Related Art As described in Japanese Patent Application Laid-Open No. 1-256749, a conventional device automatically restarts operation according to the memory of the operating state before the stop after power restoration regardless of the length of power failure. Was becoming.

Further, as described in Japanese Patent Application Laid-Open No. 62-147253, when a plurality of air conditioners are installed, a remote centralized control device is provided so that the starting current can be dispersed by remote control. I was trying to start them one by one.

[0004]

In the above-mentioned prior art, since the operation is automatically restarted after the power is restored regardless of the length of the power failure, when the power is cut off during inspection or the like,
There was a risk that the air conditioner would start operating immediately when the power was turned on by a third party. In addition, when multiple air conditioners are installed, the air conditioner alone restarts the operation after the power is restored. Since the starting current of the harmony device is concentrated, there is a problem that a large power source and wiring capacity are required.

An object of the present invention is to automatically operate after power restoration depending on the length of the power failure, such as a momentary power failure due to the power supply situation and a long-time power failure due to the circumstances of the user of the air conditioner. By making it possible to choose whether or not to restart, it is possible to build a local air conditioning system that also considers safety.

Another object of the present invention is to prevent a voltage drop due to a lack of capacity of the local power source due to the concentration of the start current of the air conditioner at the time of automatic operation start after power recovery.

[0007]

In order to achieve the above object, the present invention provides an electric circuit for detecting a power failure time, detects a power failure time by a microcomputer, and performs a power recovery operation depending on the power failure time. A switch for setting the is set on a printed circuit board on which a microcomputer is mounted.

Then, a switch for setting whether to delay the time from the power recovery to the start of operation is provided on the printed circuit board on which the microcomputer is mounted.

A switch for setting the number of the air conditioner and the delay time interval is provided.

[0010]

As described above, the power failure time is detected by the microcomputer, and if it is shorter than the time previously stored in the memory in the microcomputer, it is judged as an instantaneous power failure, and if it is longer, it is judged as a long time power failure. In this case, whether or not the power recovery operation is performed can be changed by setting the switch on the printed circuit board on which the microcomputer is mounted.

Further, when the power recovery operation is performed by setting the switch on the printed circuit board, it is possible to select whether to delay the time from the power recovery to the start of the operation by setting the switch.

[0012] Further, based on the setting of the switch on the printed circuit board, the power recovery operation can be started at intervals of the delay time set in the order of the machine number.

[0013]

Embodiments of the present invention will be described below with reference to FIGS. 1 to 3.

FIG. 1 shows the structure of the control unit of the air conditioner of the first embodiment, FIG. 2 shows a part of the structure of the control unit of the air conditioner of the second embodiment, and FIG. It shows a part of the configuration of the control unit of the air conditioner of the third embodiment.

(First Embodiment) As shown in FIG. 1, in this embodiment, the air conditioner uses a printed circuit board 1 on which a microcomputer 6 is mounted for a compressor 2, an indoor fan 3, an outdoor fan 4 and the like. Operation control such as operation and stop is performed, and power is supplied from the power supply 5. Further, on the printed circuit board 1, there are provided a switch 7 for setting whether to perform a power recovery operation during an instantaneous power failure, and a switch 8 for setting whether to perform a power recovery operation during a long power failure. A circuit for detecting a power failure time is incorporated in the circuit of the printed circuit board 1. Here, when power failure occurs in the power supply 5, when the microcomputer 6 detects the power failure time by the power failure time detection circuit of the printed circuit board 1 and is shorter than the time previously stored in the memory of the microcomputer 6. Is judged to be an instantaneous power failure, and if it is long, it is judged to be a long-time power failure. Then, when it is judged that there is an instantaneous power failure, the setting of the switch 7 is read, and when it is judged that there is a long-time power failure, the setting of the switch 8 is read and it is determined whether or not the power recovery operation is performed. From the above operation, the air conditioner
It is possible to select whether to perform power recovery operation according to the power outage time.

(Second Embodiment) In this embodiment, the air conditioner has the same control configuration as that of the first embodiment, but as shown in FIG. A switch 9 for setting whether to delay the time until the operation starts and a switch 10 for setting whether to delay the time after the power is restored after the power failure for a long time until the operation starts. . When a power failure occurs in the power source 5, as shown in the first embodiment, whether to perform the power recovery operation is determined based on the power failure time and the settings of the switch 7 and the switch 8. The setting of the switch 9 at the time of momentary power failure and the setting of the switch 10 at the time of long-time power failure determine whether to delay the time from the power recovery to the start of operation. From this operation, the air conditioner
It is possible to select whether to delay the time from the power restoration to the start of the power restoration operation.

(Third Embodiment) The air conditioner has the same control configuration as the first and second embodiments, but as shown in FIG. 3, the printed board 1 is further provided with the air conditioner number. A switch 11 for setting and a switch 12 for setting a delay time interval when delaying the time from power recovery to start of operation are provided.

When power failure occurs in the power source 5, as shown in the first and second embodiments, according to the setting of the switch 7 to the switch 12, the power recovery operation is performed and until the operation is started. It is decided whether or not to delay the time of, and when the operation is delayed, the operation is started after the power is restored by the time interval which is the number of the machine number set in the switch 11 and the delay time interval set by the switch 12. Delay the time until. For example, if the machine numbers are set in order from No. 0 to No. 9 and the delay time interval is set to 5 seconds, when all the power supplies are restored at the same time, the No. 0 machine will start immediately after the power restoration. It will start in 1 second after 2 seconds and then 2 seconds after 5 seconds.

As described above, the power recovery operation can be started at intervals of the delay time set in the order of the machine number based on the setting of the switch on the printed circuit board.

For setting the machine number and the delay time interval, a method of using the data input switch 15 from the operation panel 14 connected by the printed circuit board 1 and the transmission line 13 can be considered.

[0021]

According to the present invention, as in the case of an instantaneous power failure due to the power supply situation and the long-time power failure due to the circumstances of the user of the air conditioner, the power is automatically restored after the power is restored depending on the length of the power failure. By making it possible to select whether or not to restart the operation, it becomes possible to build a local air conditioning system that also considers safety.

Further, since the starting current of the air conditioner is concentrated at the time of automatic operation start after power recovery, the capacity of the on-site power source becomes insufficient and the voltage drop does not occur.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a control unit of an air conditioner according to a first embodiment of the present invention.

FIG. 2 is an explanatory view of a part of a control unit of the air conditioning apparatus of the second embodiment of the present invention.

FIG. 3 is an explanatory diagram of a part of a control unit of the air conditioning apparatus of the third embodiment of the present invention.

[Explanation of symbols]

1 ... Printed circuit board, 2 ... Compressor, 3 ... Indoor fan, 4 ...
Outdoor fan, 5 ... power supply, 6 ... microcomputer,
7, 8 ... Switch.

Claims (1)

[Claims] 1. An air having a power recovery operation function, which is controlled by a microcomputer, is stopped at the time of power interruption such as a power failure, and is then re-powered to automatically restart operation in accordance with a memory of an operation state before the stop. In the harmony device,
An electric circuit is installed to detect the power failure time, and the power failure time is detected by the microcomputer.If the time is shorter than the time previously stored in the memory in the microcomputer, it is judged as an instantaneous power failure, and if it is longer, it is judged as a long time power failure. do it,
An air conditioner characterized in that, in each case, whether to perform power recovery operation is changed by setting a switch on a printed circuit board on which a microcomputer is mounted.