JP4399674B2 - Compressor operation control apparatus and operation control method - Google Patents

Description

  The present invention relates to an operation control device and an operation control method for the purpose of saving power consumption of an air conditioner that adjusts the temperature by controlling the operation of a compressor such as an indoor air conditioner, a refrigerating air conditioner, and a refrigerated air conditioner.

Since the amount of power consumed by the compressor is large, power saving can be achieved by stopping the compressor for a certain period of time. For example, Patent Document 1 describes a method for forcibly controlling every predetermined control cycle and a method for forcibly controlling after a certain period of time after waiting for an operation state when stopped.
Japanese Patent No. 3037939

  The air conditioner brings the compressor closer to the target temperature by setting the compressor to one of a high load operation, a low load operation, and a stop, but the compressor is operated at a predetermined cycle unrelated to this operation. If it is forcibly stopped, it may overlap with the timing during stopping, or it may not be able to perform the function of the original air conditioning equipment, such as forcibly stopping immediately after starting operation.

  As means for dealing with such a case, Patent Document 1 describes a method of forcibly controlling a compressor on the condition that it has been operating for a predetermined time at a timing at which the compressor is forcibly stopped at a predetermined cycle. However, as described above, the compressor may fluctuate unspecified, such as repeated high-load operation or low-load operation. I don't know exactly how I worked.

  An object of the present invention is to provide a technology and an operation control device for forcibly stopping a compressor at a preferable timing after numerically grasping the operation of an air conditioner, and to transmit and receive data to and from an external device. For example, providing the operation control device.

  In order to achieve the above object, an operation control device according to the present invention is provided in an air conditioner that adjusts temperature by controlling operation of a compressor, and forcibly operates the compressor for a predetermined time or a plurality of times. In order to reduce power consumption by stopping or operating at a low load, an operating state monitoring unit that digitizes and stores and monitors the operating state of the air conditioner, and an operation control that stops the operation of the compressor or performs a low load operation An operation state in which the numerical operation state is integrated from a timing at which the air conditioner is operated from a stop or moved from a low load operation state to a high load operation state, and a numerical value accumulated for a predetermined time is stored. The monitoring means and the operation state monitoring means forcibly stop from the operation at the timing determined based on the integrated value stored in the operation state or the negative load from the high load operation state. Those comprising an operation control means for starting the control to the operating state.

  According to the above configuration, how effectively the air conditioner actually performed is controlled forcibly at a timing determined based on the value obtained by integrating the operation state of the digitized air conditioner for a predetermined time. Control can be started at an appropriate timing after confirming numerically.

  For example, in order to quantify the operating state of an air conditioner, a current sensor is attached to the power supply line of the air conditioner to measure the current consumption of the air conditioner, and when the demand for the air conditioner is large, a maximum of 30 amperes is consumed. In the air conditioner, if 1.5 ampere hours are consumed for 3 minutes after the compressor shifts from stop to operation, it can be predicted that the air conditioner is operating at high demand. Also, if the compressor consumes 0.75 ampere in 3 minutes after shifting from stop to operation, it can be predicted that the air conditioner is operating at low demand. In this way, it is possible to predict whether the operation of the air conditioner is a high demand operation state or a low demand operation state based on the current actually consumed.

  If this predicted operating state is in high demand, it can be predicted that the air conditioner is required to perform a large function in order to approach the target temperature. In this case, it can be determined that the operation is continued for 3 minutes and then the subsequent 3 minutes are forcibly stopped. Also, if the operating state is low demand, it can be predicted that the air conditioner is approaching the target temperature and does not need to work so much. In this case, it can be determined that the operation is continued for only one minute and then the subsequent five minutes are forcibly stopped.

  If the compressor is stopped by the air conditioner while the operation is continued before the control, it is possible to prevent the control from overlapping during the stop by stopping the planned control.

  In addition, according to the present invention, since the data transmission / reception means is provided, it is possible to obtain a timing for forcibly stopping by an instruction from an external device such as a demand controller that outputs an alarm according to a demand value. It can be forcibly stopped according to the operating state at the time. Further, the digitized operation state stored in the operation state monitoring unit can be transmitted to an external device such as a general-purpose computer.

BEST MODE FOR CARRYING OUT THE INVENTION

  Embodiments of an operation control apparatus according to the present invention will be described below with reference to the drawings.

  As shown in FIG. 1, the operation control apparatus 1 according to the present embodiment measures the current supplied to the outdoor unit 4 of the air conditioner with a current sensor 5, thereby describing “a numerical operation state” described in the present invention. Can be obtained. The operation control device 1 is supplied to the motor 7 by instructing the relay 6 provided in the power supply line of the motor 7 inside the outdoor unit 4 to be turned on / off by the “operation control means” described in the present invention. The power can be cut off and the compressor is substantially stopped.

  The outdoor unit 4 operates or stops the motor 7 in order to bring the indoor temperature obtained by the temperature sensor 10 provided in the indoor unit 9 close to the target temperature.

  The operation control apparatus 1 conserves the outdoor unit 4 by operating or stopping the motor 7 by turning on and off the relay 6 at a timing different from the timing at which the outdoor unit 4 operates or stops the motor 7.

  As shown in FIG. 2, the operation control device 1 includes a CPU 11, a clock unit 12, a storage unit 13, a measurement unit 14, a control unit 15, a display unit 16, and a communication unit 17.

  The CPU 11 converts the current value obtained from the current sensor 5 connected to the measurement unit 14 into a numerical value and stores it in the storage unit 13.

  The CPU 11 determines a control start timing based on a predetermined control condition obtained by transmission from an external device having a communication function stored in the storage unit 13, for example, a general-purpose computer, the current value, and a time managed by the clock unit 12. To do.

  At the control start timing, the CPU 11 transmits a control signal from the control unit 15 and operates the relay 6 on and off to forcibly stop the motor 7.

  At this time, whether or not the control signal is transmitted can be confirmed by the display unit 16.

  Next, an example of control judgment by the operation control device 1 will be described with reference to FIGS.

  FIG. 3 shows the current value obtained from the current sensor 5. Here, when T1 is 3 minutes and the integration of the current value is used for control judgment, the average current for 3 minutes of T1 is about 30 amperes, and the consumed current is about 1.5 ampere hours. When the control condition stored in the storage unit 13 is 1 ampere hour or more, when the standby time is set as 3 minutes and the control time is 3 minutes, the control unit waits for 3 minutes of T2 and 3 minutes of T3. 15 is forcibly stopped.

  FIG. 4 shows the current value obtained from the current sensor 5. In this case, when T1 is 3 minutes and the integration of current values is used for control judgment, the average current for 3 minutes of T1 is about 15 amperes, and the consumed current is about 0.75 ampere hours. When the control condition described in the storage unit 13 is less than 1 ampere hour, when the standby time is set as 1 minute and the control time is 5 minutes, the control unit waits for 1 minute of T2 and 5 minutes of T3. 15 is forcibly controlled.

  Next, the contents of the control judgment executed in the motion control apparatus 1 will be described with reference to the flowchart of FIG.

  In S 1, the current value obtained from the current sensor 5 is stored in the storage unit 13, and in S 2, the outdoor unit 4 is operated and stopped or is operated with high load, low load operation, and stopped based on the current value obtained with S 1. Get the status of.

  In S3, it is determined whether it is necessary to execute the control based on the control start condition stored in the storage unit 13 and the time obtained by the clock unit 12, and if it is not necessary to execute the control, the process returns to S1 and repeats the measurement. .

  If it is determined that the control needs to be executed in S3, the process proceeds to S4 to check whether the acquisition of the integrated value for control determination is completed. If the integrated value is being acquired, the process returns to S1 and repeats the measurement.

  If the acquisition of the integrated value for control determination is completed in S4, the process proceeds to S5 and the control start condition is acquired. In the case of the example in FIG. 4, the conditions of waiting for 3 minutes and controlling for 3 minutes are acquired.

  In S6, it is confirmed whether the condition acquired in S5 is satisfied. If not satisfied, the process returns to S1 and repeats the measurement. If it is established, the process proceeds to S7 and control by the control unit 15 is started.

  In S8, it is confirmed whether or not the control end condition is satisfied. If not satisfied, the control returns to S1 while the control is continued and the measurement is repeated. If established, the process proceeds to S9 and the control is terminated.

  As described above, according to the present invention, it is determined whether the operation of the outdoor unit 4 is a high-demand operation or a low-demand operation based on the magnitude of a numerical value measured for a predetermined time until the control is started. By forcibly delaying the timing of control, control can be started after the demand is satisfied by the amount of delay and continued operation.

  In addition, when the operation of the outdoor unit 4 is a high-demand operation, power consumption can be saved under optimum conditions while performing the original function of the air conditioner by adjusting the time for continuing the control.

It is a connection block diagram of the operation control apparatus with respect to the air conditioning equipment which concerns on embodiment of this invention. It is a functional block diagram of an operation control device concerning an embodiment of the invention. It is an example of the time chart which concerns on embodiment of this invention. It is an example of the time chart which concerns on embodiment of this invention. It is a flowchart of the operation | movement control apparatus which concerns on embodiment of this invention.

Explanation of symbols

1. 1. Operation control device 2. demand controller General-purpose computer4. Outdoor unit5. 5. Current sensor Relay 7. Motor 8. Compressor 9. Indoor unit 10. 10. Temperature sensor CPU
12 Clock unit 13. Storage unit 14. Measurement unit 15. Control unit 16. Display unit 17. Communication department

Claims (9)

An operation control device that is provided in an air-conditioning device that adjusts the temperature by controlling the operation of the compressor, and that reduces the power consumption by forcibly stopping the operation of the compressor for a predetermined time or a plurality of times or operating at a low load. An operation state monitoring unit for digitizing and storing and monitoring an operation state of the air conditioner, and an operation control unit for stopping the operation of the compressor or setting the operation to a low load, and the air conditioner is operated from the stop. Alternatively, from the timing when the low-load operation state is shifted to the high-load operation state, the numerical operation state is integrated, and the operation state monitoring unit that stores the numerical value integrated for a predetermined time and the operation state monitoring unit store Operation control that forcibly stops operation or starts control from a high load operation state to a low load operation state at a timing determined based on the integrated value Operation control apparatus characterized by comprising a means. The operation control apparatus according to claim 1, wherein the operation state to be digitized in the operation state monitoring unit is a current value. The operation control apparatus according to claim 1, wherein the operation state to be digitized is an electric power value in the operation state monitoring unit. The operation control device according to claim 1, wherein the operation control unit stops the control that is started and the control that is scheduled to start when a predetermined stop condition is satisfied. The above-mentioned 1-4, wherein the operation control unit includes means for adjusting a start timing and a duration for causing the compressor to stop or put into a low-load operation according to the integrated value stored by the operation state monitoring unit. The operation control apparatus according to any one of the above. In the operation state monitoring unit, the operation state to be digitized is stopped or the operation state of low load operation, the operation state of operation or high load operation, and the operation state while the operation control unit affects the operation of the compressor The operation control apparatus according to claim 1, wherein storage and monitoring are performed separately. 7. The transmitter / receiver according to claim 1, further comprising a transmission / reception unit capable of receiving one or more conditions for forcibly stopping the operation of the compressor or operating at a low load from an external device. Operation control device. The operation control apparatus according to claim 1, wherein the operation state monitoring unit includes a transmission unit capable of transmitting the stored numerical value to an external device. In order to reduce power consumption by forcibly stopping the operation of the compressor for one or more predetermined times or performing a low load operation for controlling the temperature of the air conditioner by controlling the operation of the compressor. The operation state is digitized, stored and monitored, and the numerical operation state is accumulated from the timing when the air conditioner is operated from a stop or moved from a low load operation state to a high load operation state, and accumulated for a predetermined time. An operation control method characterized by memorizing numerical values and forcibly stopping operation or starting control from a high load operation state to a low load operation state at a timing determined based on the integrated value.

Images