JPH04131646A - Concentrically controlled air conditioner - Google Patents

Abstract

PURPOSE:To prevent occurrence of excessive exciting electrical current generated as a result of concurrent start by a method wherein an air conditioner specified by an address code in an operation control signal receives an operation control signal, multiplies a unit start delay time by a delay coefficient and then the air conditioner is started after elapsing the start delay time of the result of the multiplication. CONSTITUTION:A remote control device 1 operates a self address specifying means 9, specifies a self address A, operates a delay coefficient setting means 7 and further sets a delay coefficient (k) of each of the air conditioners 2. Each of the air conditioners 2 operates in advance a self-address setting means 9 to set a self address (a). It further operates a unit start delay time setting means 8 to set a unit start delay time (d) of the conditioner or a unit start delay time (d) common to the group to which the conditioner belongs. As an operation control signal is received, a time counting is started by a timer 12, a self unit start delay time (d) is multiplied by the delay coefficient (k) to obtain an energization delay time D which is the product, and then a compressor 14 is started.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a centrally controlled air conditioner device that connects a plurality of air conditioners with signal lines and centrally controls them.

[Conventional technology]

Conventional centrally controlled air conditioner devices, for example, connect a remote control unit and multiple air conditioners through a control signal communication line (hereinafter referred to as control signal line), and control multiple air conditioners using a start switch on the remote control unit. were to start all at once.

However, with this method, the current at startup can be several times as large as during normal operation, and - when all startups occur simultaneously, the total startup current becomes excessive relative to the power supply capacity and the allowable capacity of the power distribution circuit. This could lead to not only voltage drops and other problems, but also problems such as difficulty in starting the air conditioner and burnout.

An example of a method for solving such problems is Japanese Patent Application Laid-Open No. 61-3
This is shown in Japanese Patent No. 939.

FIG. 4 is a block diagram of a central control system for an air conditioner disclosed in the above publication. The control signal line 4-1 from the remote control unit 1 is connected to the input terminal l of the control means 6-1 of the first air conditioner 2-1, and the control signal line 4-1 from the remote control unit 1 is connected to the input terminal l of the control means 6-1 of the first air conditioner 2-1. The first output terminal Oo is connected to the control means 6- of the second air conditioner 2-2 by the control signal line 4-2.
2 input terminal ■, and the second air conditioner 2-2
The output terminal Oo of the control means 6-2 is connected to the input terminal I of the control means 6-3 of the third air conditioner 2-3 through the control signal line 4-3, and in the same way, the n-th air conditioner is Each unit is connected in series with a separate signal control line up to the harmonizer.

In such a configuration, a signal (hereinafter referred to as an operation control signal) for setting and controlling operating conditions including starting and stopping set by the operation switch group 3 of the remote control unit 1 is emitted from the remote control unit 1, and the control signal The 51st air conditioner 2-1 is manually input from the input terminal I of the control means 6-1 through the line 4-1, and is operated according to the operation control signal. The output signal is controlled to be output from the output terminals 00 and OI after a certain period of time (r seconds until the power supply voltage stabilizes) after receiving the signal. Therefore, r seconds after inputting the operation control signal from the input terminal I, the operation control signal from the remote control unit 1 is transmitted to the second air conditioner 2-2 from the output terminal Oo.
The compression @5-1 start or stop signal is output from the output terminal 01. And n air conditioners 2-1.2-2.2-3. - and - all have the same configuration, and by connecting n units in series, control signals are sequentially transmitted at r-second intervals.

Therefore, with the above configuration, when the n air conditioners start operating, the operation control signal from the remote control unit 1 is sequentially transmitted to the n air conditioners one by one at an interval of r seconds. Compressor 5 installed in each air conditioner
-1.5-25-3. -...-5-n starts sequentially at r-second intervals, so it is possible to minimize the excessive current that flows when the compressor starts, and prevents compressor startup failures caused by simultaneous startup. We are cultivating the effects that can be achieved.

In addition to the above method, a method is also used in which the remote control unit sequentially sends operation control signals to each air conditioner at necessary intervals.

(Problems to be Solved by the Invention) However, in the conventional example disclosed in the above-mentioned publication, when the air conditioner to be started is changed or when the starting order is changed, it takes time and effort to redo the connection wiring.

In addition, in the case of a method in which the remote control unit sends operating information to each air conditioner sequentially at necessary intervals, each air conditioner has a starting current that is expected depending on the model. It is necessary to determine the model of each connected air conditioner on the remote control unit side, set an appropriate delay time depending on the expected difference in starting current, and sequentially transmit operation control signals each time the delay time elapses. This increases the burden on the remote control unit. Further, there is a problem in that when the connected air conditioner is changed or when the order of activation is changed, it is necessary to change the settings in the remote control unit.

This invention was made to solve the problems of the above-mentioned conventional technology, and reduces the burden on the remote control unit.
Air conditioners can be started in sequence with appropriate startup time intervals depending on the expected difference in startup current, and can also be easily handled when the connected air conditioners are changed or the startup order is changed. The purpose of the present invention is to provide a centralized fIIJ111 air conditioner device that can be used.

(Means for Solving the Problems) Therefore, the centrally controlled air conditioner device according to the present invention has the following features:
A remote control unit that transmits an operation control signal for controlling the operation of a plurality of air conditioners, a plurality of air conditioners controlled by the operation control signal, and the plurality of air conditioners and the remote control unit. and a control signal line for transmitting an operation control signal transmitted by a remote control unit to the plurality of air conditioners, the remote control unit is configured to control the air conditioner to be activated. An operation control signal for starting the air conditioners, including an address code for the air conditioner and a delay coefficient for sequential start-up, is sent to the plurality of air conditioners all at once, and the air conditioner specified by the address code in the operation control signal is The harmonizer is characterized in that it starts after receiving the operation control signal and after a start-up delay time obtained by multiplying the delay coefficient specified in the operation control signal by the unit start-up delay time it owns has elapsed. The configuration aims to achieve the above objective. Furthermore, in the above structure, the above object is achieved by a structure characterized in that the delay coefficient is the same as its own address code.

[For production]

With the above configuration, the remote control unit transmits an operation control signal for controlling the operation of a plurality of air conditioners, and simultaneously transmits it to the plurality of air conditioners via the control signal line.

The operation control signal includes the address code of the air conditioner to be started and a delay coefficient for sequential activation, and the air conditioner specified by the address code in the operation control signal receives the operation control signal. After that, the engine starts when the start delay time obtained by multiplying the delay coefficient specified in the operation control signal by the unit start delay time it owns has elapsed.

As mentioned above, multiple air conditioners that are specified to start up are sequentially started with a delay based on the specified delay coefficient and their own unit start-up delay time. Simultaneous occurrence of starting current can be prevented.

Furthermore, in the above configuration, if the delay coefficient is made the same as the address code of the air conditioner itself, the configuration of the operation control signal can be simplified, and the specified air conditioner can set the unit startup delay time to its own address code. It will start after the startup delay time multiplied by .

(Example) Hereinafter, a centrally controlled air conditioner device according to the present invention will be described using an example.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

1 is a remote control unit that transmits operation control signals to control the operation of a plurality of air conditioners 2; 2-1゜2-'1.2-;
n is a plurality of air conditioners 2 controlled by operation control signals transmitted from the remote control unit 1, and includes a compressor (not shown).

10 is a plurality of air conditioners 2 (2-1, 2-2゜2-n
) and remote control unit 1.
This is a control signal line that transmits an operation control signal sent from the air conditioner 2 to each air conditioner 2.

The remote control unit l includes an operation switch group 3 that sets and transmits operation control signals for controlling multiple air conditioners, including operating condition information such as starting and stopping the air conditioners, and a control switch group 3 for each air conditioner. It is provided with a delay coefficient setting means 7 for setting the delay coefficient k of the conditioner 2 or a group of air conditioners, and a self-address designation means 9 for designating its own address A.

FIG. 2 is a block diagram of the main parts involved in controlling the air conditioners 2, and the configuration of each air conditioner 2 will be explained with reference to FIG. 1.

Each air conditioner 2 has a unit startup delay time setting means 8 for setting a unit startup delay time number d, a self-address setting means 9 for setting its own address a, and an operation that receives an operation control signal from the remote control unit 1. A control signal receiving unit 11, a timer 12 that measures the delay time until activation, a storage device 13,
It includes a compressor 14 and an arithmetic processing unit 15 that is connected to each of the above-mentioned parts and controls the overall operation of the air conditioner 2, such as calculating a startup delay time and starting the compressor.

Next, the operation of the embodiment of the centrally controlled air conditioner device having the above configuration will be explained.

First, the remote control unit 1 has self-addressing means 9
is operated to designate its own address A, and the delay coefficient setting means 7 is operated to set the delay coefficient k of each air conditioner 2. When attempting to start a specific plurality of air conditioners 2, the operation switch group 3 is operated to specify the plurality of air conditioners 2 to be started according to the starting order, or the grouped air conditioners A group of air conditioners is designated at once, an operation control signal for startup is set, and the signal is sent to a plurality of air conditioners 2 all at once.

Note that the operation control signal may be set and stored in advance and transmitted when necessary.

The operation control signal to be transmitted is configured to be transmitted with each address code a and delay coefficient k added to each designated air conditioner.

Each air conditioner 2 operates the self-address setting means 9 in advance to set its own address a, and operates the unit startup delay time number setting means 8 to set its own address or a common address to the group to which it belongs. A unit startup delay time d is set in advance.

Next, the formation of a startup delay time for sequential startup of air conditioners, which is a feature of the present invention, will be explained with reference to the operational flowchart of the arithmetic processing unit of the air conditioner 2 shown in FIG.

When the operation control signal is received in step S1, step S
In step 2, it is determined whether the address code a of itself is included.

If it is not included, it is placed on standby for reception, and if it is included, the process advances to step S3 and the timer 12 starts measuring time.

Then, the process proceeds to step S4, where the delay coefficient k in the operation control signal is multiplied by its own unit startup delay time d to calculate the startup delay time. In step S5, it is determined whether the time measured by the timer 12 has reached the activation delay time, and if the time has reached the activation delay time, the process proceeds to step S6, and the compressor 14 is activated, and the timer 12 is reset in step S7.

In the above embodiment, when the delay coefficient k is made the same as the address code a of the air conditioner itself, the configuration of the operation control signal can be simplified, and the specified air conditioner 2 uses its own address code a. It is activated after the activation delay time multiplied by the unit activation delay time d has elapsed.

With the above configuration and operation, multiple air conditioners receive the operation Idlil signal for self-directed startup, and then set their own unit startup delay time d to the delay coefficient k in the operation control signal.
Since the compressor is started after the startup delay time multiplied by , it is possible to prevent failures such as insufficient power distribution capacity against excessive current, voltage drop, and startup failure due to simultaneous startup of multiple air conditioners.

This reduces the burden on the remote control unit, allows the air conditioners to be started one after another at appropriate start-up time intervals based on expected differences in starting current, and allows you to change the air conditioner to be connected. It is also possible to easily change the startup order.

〔Effect of the invention〕

As explained above, according to the present invention, the remote control unit transmits operation control signals for controlling the operation of the plurality of air conditioners to the plurality of air conditioners all at once, and transmission to the air conditioner.

The operation control signal includes the address code of the air conditioner to be started and a delay coefficient for sequential activation, and the air conditioner specified by the address code in the operation control signal receives the operation control signal. Then, when the startup delay time obtained by multiplying the delay coefficient specified in the operation control signal by the unit startup delay time maintained by itself has elapsed, it starts.

As mentioned above, multiple air conditioners that are specified to start up are sequentially started with a delay based on the specified delay coefficient and their own unit startup delay time, so simultaneous startup can be prevented, and multiple It is possible to prevent excessive starting current caused by simultaneous starting of air conditioners.

This reduces the burden on the remote control unit, allows the air conditioners to be started one after another at appropriate start-up time intervals based on expected differences in starting current, and even when the connected air conditioner is changed. It is possible to provide a centrally controlled air conditioner device that can easily handle changes in the starting order.

Furthermore, in the above configuration, if the delay coefficient is made the same as the address code of the air conditioner itself, the configuration of the operation control signal can be simplified, and the specified air conditioner can set the unit startup delay time to its own address code. It can be activated after the activation delay time multiplied by .

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
Fig. 2 is a block diagram of the main parts involved in the control of each air conditioner according to the above embodiment, Fig. 3 is a flowchart of the operation of the arithmetic processing unit of the above air conditioner, and Fig. 4 is a conventional centralized control system for the air conditioner. FIG. 2 is a system configuration diagram of the device. 1 is a remote control unit, 2.2-1.2-2゜2-n is an air conditioner, 3 is a group of operation switches, 7 is a delay coefficient setting means, 8 is a unit startup delay time setting means, 9 is a self-address Setting means, 10 is a control signal line, 11 is an operation control signal receiving section, 12 is a timer, 13 is a storage device, 14 is a compressor, 1
5 is an arithmetic processing unit. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (2)

[Claims] (1) A remote control unit that transmits an operation control signal for controlling the operation of a plurality of air conditioners, a plurality of air conditioners controlled by the operation control signal, a plurality of air conditioners and the remote control unit; A centralized control air conditioner device comprising a control signal line connected to a control unit and transmitting an operation control signal transmitted by the remote control unit to the plurality of air conditioners, wherein the remote control unit An operation control signal for starting the air conditioners including the address code and a delay coefficient for sequential starting is sent to the plurality of air conditioners all at once, and the address code in the operation control signal is used to control the operation control signal. The designated air conditioner starts after receiving the operation control signal and after the startup delay time, which is the delay coefficient specified in the operation control signal multiplied by its own unit startup delay time, has elapsed. A centrally controlled air conditioner device characterized by: (2) The centrally controlled air conditioner device according to claim 1, wherein the delay coefficient is the same as its own address code.