KR20000055135A - Apparatus and Method for controlling drive of the air conditioner - Google Patents

Abstract

PURPOSE: An apparatus and a method for controlling operation of an air conditioner are provided to expand a lifespan of a compressor by alternately operating a plurality of cooling cycles, and uniformly maintain a temperature of an air conditioning space by controlling the temperature with other cooling cycle if any cooling cycle has troubles. CONSTITUTION: A method for controlling operation of an air conditioner having a control part, a memory, first and second heat exchangers and a display part, includes the steps of determining whether a mode selection signal is input from the control part(S26), performing a function according to a selection signal if the mode selection signal is applied and storing a current operating state in the memory, alternately outputting control signals to the first and second heat exchangers according to a sensed room temperature if the mode selection signal is not applied(S30), and transmitting a signal to a system manager if an abnormal state occurs in the first or second heat exchangers.

Description

Apparatus and Method for controlling drive of the air conditioner}

The present invention relates to an air conditioner, and more particularly, to an apparatus and method for controlling operation of an air conditioner installed in an unmanned system room.

In general, an air conditioner uses a cooling cycle that changes into evaporation, compression, condensation, and expansion. The cooling cycle heat-converts hot air in the room to cold air to maintain a comfortable humidity and temperature in the room.

Hereinafter, with reference to the accompanying drawings as follows.

In general, as shown in FIG. 1, the air conditioner includes a power input unit 1 for supplying power, a key operation unit 2 for applying an operation control and a driving mode change command, and an indoor temperature sensing unit for sensing an indoor temperature. (3), a control unit (4) for controlling each driving unit of the outdoor unit in response to the operation control command, an indoor heat exchanger (5) for sensing the pipe temperature of the indoor unit and applying it to the control unit (4), and the control unit ( The outdoor heat exchanger 6 is configured to drive an outdoor fan (not shown) by the corresponding control signal of 4).

As described above, when the user inputs a control command of an arbitrary operation mode to the indoor unit controller (not shown) through the key operation unit 2, the user transmits a corresponding operation control command to the outdoor heat exchanger 6.

In addition, when the operation control command is received, the control unit 4 operated by the power input unit 1 transmits a driving control signal to the outdoor heat exchanger 6 so that an outdoor fan (not shown) and a compressor (not shown) are provided. Operate simultaneously.

The operation of the air conditioner configured as described above will be described with reference to FIG. 2.

First, it is determined whether power is applied (S1), and if power is applied according to the determination result, operation is performed according to a preset condition (S2).

Then, it is determined whether or not the driving conversion signal is input from the key operation unit (S3).

If there is a key signal input according to the determination result, operation is performed according to the input key signal (S4).

It is determined whether the air conditioner is in an operating state while performing the operation (S5). This is because an operation stop occurs due to a sudden power failure during the operation of the air conditioner.

If the air conditioner continues to operate according to the determination result, the indoor temperature is sensed (S5).

It is determined whether cooling is necessary because the sensed indoor temperature is high (S7), and if the cooling is not necessary according to the determination result (S8).

According to the determination result, if the room temperature is high and cooling is required, the outdoor unit is driven to perform the cooling operation (S9).

After the cooling operation, it is determined whether the power is off, and the operation is stopped when the power is off (S10).

In addition, when the operation is stopped by a power failure or the like during the operation, the outdoor unit is stopped and the initial state is maintained.

Therefore, the air conditioner installed in the unmanned system room according to the prior art operates in a predetermined state, thereby always operating in a predetermined state by maintaining an initial state even when power is re-entered after a power failure.

However, the air conditioner installed in the unmanned system room according to the prior art has the following problems.

First, since one indoor unit consists of one outdoor unit, when an abnormality occurs in the cooling cycle, there is a risk of malfunction of various systems due to excessive temperature rise in the unmanned system room.

Second, there is a hassle of having to reset the desired temperature when power is reapplied after a power failure.

Third, there is a disadvantage in reducing the life of the air conditioner by controlling the room temperature by one refrigeration cycle.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a control apparatus and method for operating an air conditioner to install a plurality of refrigeration cycles in one air conditioner alternately.

1 is a block diagram schematically showing an air conditioner according to the prior art

2 is a flow chart illustrating a method for controlling operation of an air conditioner according to the prior art.

3 is a block diagram schematically showing an operation control apparatus of an air conditioner according to the present invention.

4 is a flowchart illustrating a method of controlling operation of an air conditioner according to the present invention.

Explanation of symbols for main parts of the drawings

10: power input unit 11: key operation unit

12: room temperature sensing unit 13: control unit

14: first indoor heat exchanger 15: second indoor heat exchanger

16: first outdoor heat exchanger 17: second outdoor heat exchanger

18: display unit 19: memory (EEPROM)

20: remote control unit 21: remote transmitter

22: switch 23: remote receiver

A feature of the present invention is that in an air conditioner, a first indoor heat exchanger and a first outdoor heat exchanger forming a first refrigeration cycle, a second indoor heat exchanger and a second outdoor heat exchanger forming a second refrigeration cycle, A control unit which outputs a control signal to the first outdoor heat exchanger or the second outdoor heat exchanger, a display unit which displays the abnormality of the first outdoor heat exchanger or the second outdoor heat exchanger, and the first outdoor heat exchanger or the second outdoor heat exchanger. Remote control unit for transmitting a problem to the system administrator when a failure occurs, and a memory for storing the current operating state in the event of a power failure.

Hereinafter, with reference to the accompanying drawings will be described an operation control apparatus and method of an air conditioner according to the present invention.

3 is a block diagram showing an operation control apparatus of the air conditioner according to the present invention, Figure 4 is a flow chart showing the operation control method of the air conditioner according to the present invention.

As shown in FIG. 3, the present invention provides a key operation unit 11 for converting an operation state through a key operation, an indoor temperature sensing unit 12 for sensing an indoor temperature, and a first and second sensing unit piping temperature. A power supply to the second indoor heat exchanger (14) (15), the control unit (13) for controlling the first and second outdoor unit load driving units in response to an operation control command of the key operation unit (11); The first and second outdoor heat exchangers 16 and 17 which operate an outdoor fan (not shown) according to the power supply unit 10 to supply, the corresponding control signal of the control unit 13, and the first and second A display unit 18 which receives an abnormal state of the second outdoor heat exchanger 16 and 17 from the control unit 13 and displays the abnormal state of the second outdoor heat exchanger 16 and 17, a memory 19 which stores a current operation state in case of power failure, and the control unit 13 Remote control unit 20 for transmitting the abnormal state of the first and second outdoor unit load driving unit (16, 17) transmitted from the system manager to It is composed of

The remote controller 20 may include a remote transmitter 21 for transmitting an abnormal signal applied from the controller 13, an exchanger 22 for transmitting an abnormal signal applied from the remote transmitter 21, and It is composed of a remote receiver 23 for receiving the abnormal signal transmitted from the switch 22 and transmitted from the system manager.

The remote receiver 23 is composed of a telephone or a pager.

An operation control method of the air conditioner configured as described above will be described with reference to FIG. 4.

First, it is determined whether power is applied (S21). If power is applied according to the determination result, data stored in the memory is read (S22).

Then, it is determined whether the air conditioner is in an operating state (S23). If the air conditioner is in operation according to the determination result, the air conditioner is automatically operated according to the data stored in the memory (S24).

If the air conditioner is in a stopped state, it continues to be stopped (S25).

According to the data stored in the memory, it is determined whether the driving state conversion signal by the key operation is input in the automatic driving state (S26).

When the driving state conversion signal by the key manipulation is input, the driving state is converted according to the input key signal to perform the operation (S27).

The converted driving state is stored in a memory (S28), the driving state is stored in a memory, and it is determined whether the air conditioner is operated (S29).

When the air conditioner is in an operating state, an indoor temperature is sensed (S30), and it is determined whether the detected indoor temperature is above a predetermined temperature (S31).

Subsequently, the determination result (S31), if the detected indoor temperature is less than a predetermined temperature, the driving of both the first and second outdoor heat exchanger is stopped (S32). At this time, the stop of the first outdoor unit or the second outdoor unit for the alternating operation is displayed.

On the other hand, the determination result (S31), if the detected indoor temperature is a certain temperature or more, it is determined whether any one of the first outdoor heat exchanger or the second outdoor heat exchanger before the stop is in operation (S33).

As a result of the determination (S33), if both the first outdoor heat exchanger or the second outdoor heat exchanger are in a stopped state, it is determined whether the first outdoor heat exchanger has been driven before the power is applied (S34).

As a result of the determination (S34), if the first outdoor heat exchanger is in a driving state, the second outdoor heat exchanger is driven, and after indicating the abnormality of the first outdoor heat exchanger, an error signal of the first outdoor heat exchanger is sent (S35-). S36).

As a result of the determination (S34), if the first outdoor heat exchanger is not in the driving state, it is determined that the second outdoor heat exchanger is in the driving state, the first outdoor heat exchanger is driven, and the second outdoor heat exchanger displays an abnormal occurrence. The abnormality occurrence signal of the outdoor heat exchanger is transmitted (S37-S38).

Then, it is determined whether the power is off, and if the power is not off, the routines S26 to S38 are repeated (S39).

As described above, when the power is first applied, the present invention reads data stored in the memory 19 to perform state conversion to an operating or stopped state of the air conditioner. This is to control the memory to be operated when the power is applied after the power failure.

When the power is applied, the operation state conversion is performed by the key operation unit 11 of the main body by the operation state conversion signal of the air conditioner, and the operation state conversion is performed, and the converted data in case of power failure is stored in the memory 19 Store in

Then, the air conditioner is controlled differently depending on whether the operation condition or the stop condition. In the stop condition, all of the plurality of refrigeration cycles are stopped.

In addition, if the operating conditions are detected by the change in the indoor temperature, the room temperature is high to perform the cooling and the room temperature is low, and the operation of the outdoor heat exchanger to stop the operation is divided into run control.

First, when it is necessary to stop the operation of the outdoor heat exchanger, the first and second outdoor heat exchangers are stopped to prevent the indoor temperature from falling further, and the stop state of the previous outdoor heat exchanger is displayed during the cooling operation.

On the other hand, if both the first and second outdoor heat exchangers are in a stopped state, the operation state of the previous outdoor unit is checked. If the first outdoor heat exchanger was previously operated, the second outdoor heat exchanger is operated. 1 Start the outdoor heat exchanger.

As such, if the first outdoor heat exchanger and the second outdoor heat exchanger are alternately operated, and the indoor temperature does not fall below a certain temperature even after a certain time elapses after the operation of one outdoor heat exchanger, it is determined that the outdoor heat exchanger and the cycle have failed. To execute cooling control with the other one and generate an abnormal signal indicating an abnormal state.

When an abnormality occurs in the first outdoor heat exchanger or the second outdoor heat exchanger, an error occurrence signal of the outdoor heat exchanger is transmitted to a designated telephone number, and the signal transmitted is an abnormal state of the first outdoor heat exchanger or the first outdoor heat exchanger. 2 By distinguishing the abnormal state of the outdoor heat exchanger and sending it to the system administrator, the abnormal state can be notified.

As described above, the present invention adopts a plurality of refrigeration cycles of the air conditioner used for installation in the unmanned system room to control the alternating operation at all times, when one cycle is abnormal and cooling is not the other one Cool in cycle of.

When the air conditioner stops the operation due to a sudden power failure during normal operation and the power is turned on again, the operation state stored in the memory is memorized and the operation is restarted.

Operation control apparatus and method of the air conditioner according to the present invention has the following effects.

First, by adopting a plurality of refrigeration cycles alternately operating the life of the compressor can be extended.

Secondly, when one refrigeration cycle breaks down, the other performs temperature control, thereby keeping the temperature of the air conditioning space constant.

Third, the system administrator can easily determine whether there is a defect by transmitting the failure part of the refrigeration cycle to the administrator using a communication means at a long distance.

Claims (9)

In air conditioner, A first indoor heat exchanger and a first outdoor heat exchanger forming a first refrigeration cycle; A second indoor heat exchanger and a second outdoor heat exchanger forming a second refrigeration cycle; A control unit outputting a control signal to the first outdoor heat exchanger or the second outdoor heat exchanger; A display unit which displays an abnormality of the first outdoor heat exchanger or the second outdoor heat exchanger; A remote control unit for transmitting an abnormality of the first outdoor heat exchanger or the second outdoor heat exchanger to a system administrator; And, Operation control apparatus of the air conditioner, characterized in that it comprises a memory for storing the current operating state in the event of a power failure. The method of claim 1, The remote control unit and the remote transmitting unit for transmitting an abnormal signal applied from the control unit; An exchanger for transmitting an abnormal signal applied from the remote source; Operation control apparatus of the air conditioner, characterized in that it comprises a remote receiving unit for receiving the abnormal signal transmitted from the switch and delivered from the system manager. The method of claim 1, And the control unit alternately outputs a control signal to the first outdoor heat exchanger and the second outdoor heat exchanger. The method of claim 1, And a cooling control is executed by a second outdoor heat exchanger when an abnormality occurs in the first outdoor heat exchanger. The method of claim 1, And a cooling control is executed by the first outdoor heat exchanger when an abnormality occurs in the second outdoor heat exchanger. The method of claim 1, And the first indoor heat exchanger and the second indoor heat exchanger are mounted on one main body. In an air conditioner having a control unit, a memory, first and second outdoor heat exchangers, and a display unit, A first step of determining whether the mode selection signal is applied by the controller; A second step of performing a function according to a selection signal and storing a current execution state in the memory when a mode selection signal is applied as a result of the determination in the first step; A third step of alternately outputting a control signal to the first outdoor heat exchanger or the second outdoor heat exchanger according to the sensed indoor temperature when the mode selection signal is not applied as a result of the determination of the first step; And a fourth step of transmitting the abnormal condition in the first outdoor heat exchanger or the second outdoor heat exchanger to a system administrator. The method of claim 7, wherein Determining whether the indoor temperature detected in the third step is above a predetermined temperature; Stopping driving of the first outdoor heat exchanger and the second outdoor heat exchanger if the detected indoor temperature is lower than a predetermined temperature; Determining whether one of the first outdoor heat exchanger or the second outdoor heat exchanger is stored in the memory when the detected indoor temperature is equal to or greater than a predetermined temperature; Operating the second outdoor heat exchanger for a preset time if the first outdoor heat exchanger was in operation, and operating the first outdoor heat exchanger for a preset time if the second outdoor heat exchanger was in operation. Operation control method of air conditioner. The method of claim 8, If the indoor temperature does not fall to the set temperature after the preset time, it is determined as an abnormal state of any one of the first outdoor heat exchanger and the second outdoor heat exchanger, and it is displayed. Operation control method of the air conditioner, characterized in that comprises a step.