JP6464336B1 - How to reduce individual power visualization for commercial inverter air conditioners - Google Patents

Abstract

[PROBLEMS] To specifically control individual power consumption for all air conditioners.
Each air conditioner is provided with an inverter controller for controlling electric power used, and an output limiting adapter dedicated to the air conditioner outdoor unit is attached, and the output limiting adapter is connected to the inverter based on a command signal. Can be switched between a limited state in which the output of 90% or less is output and a non-restricted state in which the output is 100% or higher. When the ON command is issued, the inverter controller is turned on and the inverter controller is turned on. The operating output of the air conditioner is reduced by 10 to 50%.
[Selection] Figure 1

Description

Detailed Description of the Invention

  The present invention relates to an individual power visualization reduction method for an inverter air conditioner that monitors and controls the power of a commercial air conditioner that consumes a large amount of power.

Power consumption in places where multiple air conditioners for business use are installed, such as supermarkets, convenience stores, hotels, pachinko parlors, factories, etc., is required to be kept to a minimum while managing temperature and humidity in the stores.
Such business-use power contractors usually have a price contract with an electric power company with an upper limit of peak power consumption (average), and management that does not exceed the contract power is required.
However, especially in midsummer and mid-winter, trying to keep the temperature inside the store properly and putting all the air conditioners into full operation may increase power consumption at once.

Until now, power consumption has been controlled by inverter control of air conditioners, but the temperature is often set based on internal regulations such as in stores, etc., and manually based on output commands from existing demand devices. Therefore, the power consumption was reduced by mainly operating or canceling the air conditioner. In addition, there was a delay in response due to manual operation.
In this case, the operation of the air conditioner was dealt with at the expense of comfort, and it is difficult to think of it as a reasonable deal. In addition, delays in response, forgetting, and neglecting do not make sense to install a demand detection device. In addition, there are many cases where the air conditioner is fully operated even in the summer when the temperature in the store is below the proper level, and even in the winter, it is not possible to reduce power consumption by optimizing the room temperature. It was enough.

  In addition, it is very troublesome to manually operate air conditioners at multiple locations such as large stores or multiple floors individually to operate and cancel the inverter of each air conditioner, and it is troublesome to switch frequently. is there. And even if it is the same store etc., there is a place where the effect of an air conditioning appears immediately depending on a place, and there is a place where it is not. However, controlling air conditioners with temperature is a widely used technology, but there is a system that monitors the individual power consumption of all air conditioners, uses that data as a reference, and controls it based on the data and experience. There wasn't.

Therefore, the present inventor has proposed an accurate power consumption management system for various individual devices by utilizing the features of wireless communication so that the total power consumption of each individual device can be managed.
The following literature is mentioned as this prior art.
JP2006-145788

Problems to be solved by the invention

Until now, wireless technology has been introduced to monitor power consumption, but power consumption cannot be controlled by simple monitoring alone. The question remained whether the quantity could be monitored and controlled.
In other words, in order to monitor individual power consumption for all air conditioners, how to control the problem specifically solves the problem.

Means for solving the problem

The present invention is an individual power visualization reduction method for commercial inverter air conditioners,
Each air conditioner (1) is equipped with an inverter controller (2) for controlling the power consumption.
The power cord of each air conditioner connected to the power supply is provided with a current detection sensor (2) and an output limiting adapter dedicated to the air conditioner outdoor unit.
The output limit adapter is configured to be capable of switching control between a limit state in which the output of the inverter is 90% or less and a non-limit state in which the output is 100% or more based on a command signal,
The current detected by the sensor (2) is input to the slave unit (3) to be converted into a data signal, and data every second is averaged and transmitted for 1 minute,
The slave unit (3) is provided with a radio unit (4) to transmit the data signal to the master unit (5), and the master unit (5) automatically inputs the data as 30 minutes into the personal computer (6). , Configured to be stored and managed as at least one day of data,
These data can be visualized by the display unit of the personal computer (6).
By setting the application built in the personal computer (6) in advance so that it can be turned on or off in units of days or hours based on the experience of on-site cooling and heating, or past data. When the command is issued, the inverter controller (2) is turned off and the air conditioner (1) is in a full operation state. When the command is turned on, the inverter controller (2) is turned on and the air conditioner is turned on. The operating output of (1) is a reduced output of 10 to 50%, and
Unlike the operation state at the time of OFF, the air blowing function is not stopped even when the compressor of the air conditioner (1) is stopped.

In the present invention, the current detection sensor is a sensor that surrounds a power cord and detects the magnitude of the current, and is a type that picks up a change in current accompanying the compressor driving of the air conditioner and the air blowing driving of the indoor unit.
The slave unit has a function of digitally converting current data from the sensor by an A / D converter and an output relay that operates in response to a command signal from the master unit for the output limiting adapter, and an attached wireless The data can be sent and received by the machine.
The master unit has a transmission / reception function, and can transmit received digital data to a personal computer by wire and wirelessly transmit an ON / OFF signal to the output restriction adapter from the personal computer via a wire.
The inverter controller and the slave unit of each air conditioner are connected by wire, and are configured so that the inverter controller can be turned on or off by a command from a personal computer.

Effect of the invention

The present invention is an invention specialized for individual air conditioners for business use, and has an advantage that the control of the inverter air conditioner can be switched to the power saving mode by remote control. This makes it possible to support power-saving modes based on power consumption during peak hours, in addition to conventional control using temperature sensors, and to help control within the contracted peak power contract range without having to endure it during cold weather. There is an advantage to bear. And since the personal power used can be grasped by visualization with the personal computer at hand, there is an advantage that it can be managed easily. Unlike the driving situation when the air conditioner is turned off, the air blowing function is prevented from stopping even when the compressor of the air conditioner is stopped, thereby utilizing the effect that the comfort can be felt longer than before.
Other specific advantages of the present invention will become apparent from the following description of the examples.

When carrying out the present invention, it is preferable to install a repeater at a required location when there is a radio wave obstacle so that remote operation can be performed reliably.
Radio interference often occurs depending on the building structure and the like, and reliable radio wave propagation is very important for control of this type of individual air conditioner, especially for recording power measurement values.

The schematic of the whole which implements the individual electric power visualization reduction method of the inverter air-conditioner concerning this invention is shown. The screen of the computer showing the individual electric power visualization reduction of the inverter air conditioner concerning this invention is shown.

A preferred embodiment of the individual power visualization reduction method for an inverter air conditioner according to the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, here, three commercial air conditioners will be described.
Each air conditioner 1 is provided with an inverter controller 2 for controlling power consumption. The air conditioner here has an air-conditioning function, and the electric power used per unit is 5 kw to 20 Kw (varies depending on the air-conditioning target) at the time of full operation, and the electric power used is 200V.

The inverter control adapter 2 is attached to each air conditioner outdoor unit, and the power consumption can be reduced by 30% of the rated power by the inverter control. This limits the power consumption of the air conditioner compressor.
A current detection sensor 3 is attached to each power cord 4 of each air conditioner connected to the power source. This sensor 3 is a general-purpose clamp type, and is a known type that can pick up and detect a current flowing through a cord. Therefore, detailed description is omitted.

And the electric current detected by the said sensor 3 is input into the subunit | mobile_unit 5, and is made into a data signal. Here, an A / D converter is used. The data corresponding to each of the air conditioners 1A, 1B, 1C is also created as a data signal at the same time, and it is known which air conditioner 1A, 1B, 1C is the current. Such an A / D converter is an existing one, and therefore detailed description thereof is omitted.
A wireless device 6 is provided in the slave device 5 so that the data signal is transmitted to the master device 7. Here, the radio device 6 uses a high-frequency radio frequency. Such a frequency is used for a general wireless LAN or the like, and in consideration of interference, one channel from the surrounding environment, which is relatively resistant to communication failure, can be selected from 16 channels.
The wireless device 6 and the parent device 7 have a configuration known per se.

  Then, a personal computer 9 is connected to the parent device 7 via the USB cable 8 and is recorded in the personal computer 9 as power consumption every 30 minutes for each air conditioner 1A, 1B, 1C.

  Here, the power consumption upper limit means that all business power consumption is monitored, and the total power in 30-minute units means the condition value according to the contract with the initial power company. If this happens, a penalty will be generated, and the user will be required to operate the air conditioner within a range that does not exceed the value. For each supply area, the electric power company constantly monitors by setting an upper limit value so that the total power of the contractee does not exceed the power supply capacity, so that a power supply accident does not occur.

Therefore, also in this invention, the personal computer 9 is compared with the data transmitted from each of the air conditioners 1A, 1B, 1C, checked by visual observation, and transmitted with the corresponding ON control signal of the inverter controller 2. Thus, the operation of the air conditioner 1 is suppressed by remote control, and the power consumption is reduced.
At this time, it is possible to control each air conditioner 1A, 1B, 1C. That is, which air conditioner 1A, 1B, 1C is to be controlled is determined by selecting the destination of the ON signal.

As described above, the present invention is an individual power visualization reduction method for a plurality of commercial inverter air conditioners, and is implemented as follows.
Each air conditioner 1A, 1B, 1C is provided with an inverter controller 2 for controlling the power used. A current detection sensor 3 and an output limiting adapter dedicated to the air conditioner outdoor unit are attached to the power cord 4 of each air conditioner connected to the power source.
The output restriction adapter is configured to be capable of switching control between a restricted state where the output of the inverter is 90% or less and a non-restricted state where the output is 100% or more based on a command signal.

Then, the current detected by the sensor 3 is input to the slave unit 5 to be converted into a data signal, and data every second is averaged and transmitted for one minute.
A wireless device 6 is provided in the child device 5 and the data signal is transmitted to the parent device 7. The parent device 7 automatically inputs data as 30 minutes into the personal computer 9 using the USB cable 8. It is configured to be stored and managed as day data.
These data can be visualized by the display unit of the personal computer 9.

  Then, by setting either ON / OFF based on the on-site cooling / heating experience of the application built in the personal computer 9 in advance, the inverter controller 2 is turned off when an OFF command is issued. In this state, the air conditioner 1 is in a full operation state, and when the ON command is issued, the inverter controller 2 is turned on so that the operation output of the air conditioner 1 is reduced by 10 to 50%. ing. In addition, the air blowing function is not stopped when the compressor of the air conditioner 1 is stopped, unlike the operation state when OFF. The on-site cooling / heating sensation refers to a temperature in a range where an actual individual cooling place is actually felt to be appropriate.

  In this embodiment, a relay device 10 having a transmission / reception function is provided between the slave device 5 and the master device 7 to improve the communication situation. That is, in the actual site, each air conditioner 1A, 1B, 1C is often installed in a place where the radio wave condition of the store is bad. In this case, the relay machine is considered in consideration of the radio wave situation to the master unit 7. 10 is interposed. Such a repeater 10 has only a transmission / reception function.

  FIG. 2 shows a computer screen showing visualization of power consumption reduction of an air conditioner according to the present invention, the left column shows the date and time of occurrence, the upper column shows individual air conditioners, and the central graph shows total usage Represents power. In the right column of the center graph, □ Series 1 and 2 represent the display color of the bar graph, and two types of display are possible. In this case, □ Series 1 brown is adopted. However, because the copy is monochrome, it is expressed in black.

  Since the apparatus according to the present invention can be implemented simply by being attached to an existing inverter air conditioner, the control of a plurality of air conditioners in various industries can be performed by remote operation, so the applicable range is wide.

1: Air conditioner 2: Inverter controller 3: Current detection sensor 4: Power cord 5: Slave unit 6: Radio unit 7: Master unit 8: USB cable 9: Personal computer 10: Relay unit

Claims (2)

An individual power visualization reduction method for a plurality of inverter air conditioners for business use,
Each air conditioner (1) is equipped with an inverter controller (2) for controlling the power consumption.
The power cord of each air conditioner connected to the power supply is provided with a current detection sensor (2) and an output limiting adapter dedicated to the air conditioner outdoor unit.
The output limit adapter is configured to be capable of switching control between a limit state in which the output of the inverter is 90% or less and a non-limit state in which the output is 100% or more based on a command signal,
The current detected by the sensor (2) is input to the slave unit (3) to be converted into a data signal, and data every second is averaged and transmitted for 1 minute,
The slave unit (3) is provided with a radio unit (4) to transmit the data signal to the master unit (5), and the master unit (5) automatically inputs the data as 30 minutes into the personal computer (6). , Configured to be stored and managed as at least one day of data,
These data can be visualized by the display unit of the personal computer (6).
At the time of an OFF command by setting either ON / OFF based on the experience of on-site cooling / heating of the application built in the personal computer (6) so that it can be set in advance or the power consumption data of the system The inverter controller (2) is turned off and the air conditioner (1) is in a full operation state. When the ON command is issued, the inverter controller (2) is turned on and the air conditioner (1) is turned on. The operating output is reduced by 10 to 50%, and
Unlike the operation situation at the time of OFF, the air blowing function is not stopped even when the compressor of the air conditioner (1) is stopped.
Individual power visualization reduction method for inverter air conditioner   The relay device (6) having a transmission / reception function is provided between the child device (3) and the parent device (5) so as to improve the communication situation. The individual power visualization reduction method of the described inverter air conditioner.

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