JP2005049039A - Air conditioning equipment controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air-conditioning equipment control controller capable of reducing energy consumption and air-conditioning according to time and climate in a relatively large-scale air-conditioning equipment.
A controller for controlling the output of an inverter for air conditioning equipment, wherein a real-time clock 1 for specifying an operation date and time, an operation frequency master in which set frequencies of a plurality of operation settings are stored, and the operation settings are A master table 2 comprising: an operation pattern master storing a plurality of operation patterns composed of a plurality of combinations in series; and an operation schedule master storing a plurality of operation schedules composed of a plurality of combinations of the operation patterns in time series; With respect to the control changeover switch 3 for selecting an operation pattern or an operation schedule to be executed from among a plurality of operation patterns and operation schedules provided in the table 2, and the inverter 4 for driving a motor of an air conditioning fan. The operation pattern selected by the changeover switch 3 Or the time control means 5 which sends the control command of the operation setting according to an operation schedule, The air-conditioning equipment control controller provided with.
[Selection] Figure 1

Description

  The present invention relates to an air conditioning equipment control controller, and more particularly, to a technique for reducing energy consumption and air conditioning according to time and climate in a relatively large air conditioning facility.

The demand for power from air conditioners is extremely high, and reducing power consumption of air conditioning equipment is an important issue today in terms of power saving. Under such circumstances, conventional air conditioning control reduces power consumption by performing intermittent operation only by turning on and off the blower fan and pump so that they are operated only when necessary and stopped when unnecessary. In the blower fan for sending the air cooled through the heat exchanger to the air-conditioning area, it was always operated at the same number of revolutions during the operation of the air-conditioning equipment. It has been.
JP 2000-179912 A

  However, in relatively large-scale air conditioning equipment installed in buildings such as various plants, hospitals, schools, and event halls, the amount of power required to operate the blower fan used is enormous, and the blower fan is controlled. By doing so, it is required to appropriately control the flow of cooling air (water) for cooling and warm air (water) for heating. Moreover, if the air conditioning control is performed only by turning the blower fan or pump on / off, a relatively large amount of transient power is consumed each time the air blower fan or pump is turned on, and the operating state of the blower fan or pump is roughly fixed. From the aspect of control, the temperature difference with respect to the set temperature must be increased, resulting in a vicious circle in which the frequency of on / off increases and the total amount of transient power increases.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an air-conditioning equipment controller that can reduce energy consumption and achieve air-conditioning according to time and climate in a relatively large-scale air-conditioning equipment. And

  The air conditioner control controller according to the present invention made to solve the above problems is a controller that controls the output of an inverter for an air conditioner, and includes a real time clock for specifying the operation date and time, and a set frequency for each of a plurality of operation settings. The operation frequency master in which the operation settings are stored, the operation pattern master in which a plurality of operation patterns are combined in time series, and the operation schedule in which a plurality of operation patterns are combined in time series are stored. A master table provided with a schedule master, a control changeover switch for selecting an operation pattern or an operation schedule to be executed from among a plurality of operation patterns and operation schedules provided in the master table, and a motor for a blower fan for air conditioning equipment For the inverter that drives Characterized in that and a time control means for sending a control command for said selected operation pattern or operation conforming to scheduled operation set by the selector switch.

  The master table may be configured to include a specific day operation pattern master that stores the operation pattern for a specific day in which a plurality of the operation settings are combined in time series, and a temperature at which the temperature of the air-conditioned space is detected. A temperature control master that determines the operation setting to be executed according to the difference between the detected temperature of the temperature sensor and the set temperature, and the temperature control master for the inverter. There may be a configuration in which temperature control means for sending a control command for the normal operation setting is provided, and a control changeover switch for selecting a control mode of the temperature control means is provided.

  The master table further includes a pressure sensor for detecting the pressure in the air conditioning medium circulation path when another control condition called pressure is set to control the motor for driving the air conditioning medium circulation pump. A control command for setting the operation setting to be executed according to the difference between the detected value of the pressure sensor and the set value, and setting the operation setting for the inverter based on the pressure control master. In some cases, a pressure control means for transmitting the pressure and a control changeover switch for selecting a control mode of the pressure control means may be provided.

  In addition, the said controller should just send a control command with respect to the inverter which controls the said ventilation fan or a pump according to the control mode to select. For example, when a single controller is used in combination, a means for switching the inverter controlled by the controller may be required when setting the control conditions.

  Alternatively, as a controller that controls the output of the inverter that drives the motor of the air conditioning medium circulation pump, a pressure sensor that detects the pressure in the air conditioning medium circulation path is provided, and the set frequencies for each of the plurality of operation settings are stored. A master table having an operation frequency master and a pressure control master in which an operation setting to be executed is determined according to a difference between a detection value of the pressure sensor and a setting value, and the pressure control master with respect to the inverter It is good also as an air-conditioning equipment control controller provided with the pressure control means which sends the control command made into the operation setting based on.

  According to the air conditioning controller of the present invention, it is possible to appropriately control the flow of cool air (water) for cooling and warm air (water) for heating. The amount of power required for operation can be greatly reduced, and air conditioning according to the time and climate can be realized. In addition, when used as a controller for controlling the output of an inverter that drives the motor of the air conditioning medium circulation pump, the pressure in the air conditioning medium circulation path can be maintained at an efficient pressure suitable for the diameter and configuration of the circulation path. In addition, for example, when the flow path to the heat exchanger is closed and a large pressure fluctuation occurs in the circulation path, it is possible to perform appropriate processing without wasting energy, such as stopping the pump. This contributes to the reduction of electric energy consumption in large-scale air conditioning equipment.

Embodiments of an air conditioning equipment control controller (hereinafter referred to as a controller) according to the present invention will be described below with reference to the drawings.
FIG. 1 shows a variable frequency inverter (hereinafter referred to as an inverter 4) that drives a motor of a blower fan for air conditioning equipment or a pump for circulating an air conditioning medium, and the controller 10 that controls the output frequency of the inverter 4. 1 shows an example of an air-conditioning control apparatus including a temperature sensor 6 that detects the temperature of an air-conditioned space that is a control condition by the controller 10 or a pressure sensor 8 that detects a pressure in an air-conditioning medium circulation path.

  The inverter 4 performs pulse width modulation by converting commercial power into DC by a smoothing circuit and switching the DC power by an inverter bridge. The pulse width modulation signal generating means for controlling the pulse width modulation is a frequency reference according to a frequency command given from an analog input control terminal or a contact input control terminal from the controller, or a voltage given by an operation using the frequency reference as a parameter. A PWM signal based on the reference is generated, and the semiconductor switch constituting the inverter bridge is switched by the action of the drive circuit operated by them. As a result, an output of a desired voltage and frequency is formed based on the multi-speed operation voltage or operation frequency set in advance in the internal control means in the inverter 4 (not shown), and the output is the air blower fan for air conditioning equipment. Supplied to the drive motor and the drive motor (three-phase induction motor) of the air-conditioning medium circulation pump (see FIG. 1).

  The controller 10 is configured as a so-called computer system including an MPU unit 11, a data display unit 12, a memory unit (EEPROM) 13, an interface unit 14, a switch unit 15, and a power source unit 16 (see FIG. 2). A master table 2 in which various data masters are stored together with hardware resources and programs, and various registration data, and a database 17 in which various reference power data, actual data and operation history data are recorded, Various control means 5, 7, 9 for performing specific control of the inverter 4 using the master table 2, and control for selecting a control means to be adopted from the various control means 5, 7, 9 The operation status of the changeover switch 3 and the various control means 5, 7, 9 is saved as the operation history data. Recording means 18 for saving the total record based on the operation history data as actual data, display means 19 for displaying the operation setting state during operation, the energization state of the MPU unit 11, and whether the MPU unit 11 is normal. Registration / reading means 20 for performing input operations such as inputting, deleting, changing, or reading the contents of the master table 2, and a calendar and clock function for specifying the operation date and time of the controller 10 A real-time clock 1 is realized (see FIG. 1).

  The master table 2 includes an operation frequency master storing a set frequency of each of a plurality of operation settings, an operation pattern master storing a plurality of operation patterns obtained by combining a plurality of the operation settings in time series, and the operation pattern. A driving schedule master that stores a plurality of driving schedules that are combined in time series, and a specific day driving pattern master that stores the driving patterns for a specific day (specific day driving patterns) in which a plurality of the driving settings are combined in time series In addition, the operation setting to be executed is a temperature control master determined according to the difference between the temperature detected by the temperature sensor 6 (hereinafter referred to as the outside air sensor input temperature) and the set temperature, and the operation setting to be executed is Pressure determined according to the difference between the detected pressure of the pressure sensor 8 (hereinafter referred to as in-pipe sensor input pressure) and the set value Control master is provided (see FIG. 2 memory unit).

  The operation frequency master is a data table in which a control command of a frequency corresponding to the multi-speed operation frequency of the inverter 4 is assigned to a plurality of operation settings according to the specifications of the inverter 4 to be controlled. In this example, a table in which a plurality of operation settings (in this example, eight operation settings managed with numbers from 0 to 7) are registered, and control commands of predetermined frequencies for both inverters are defined for each operation setting. And consists of a table.

  The control command of the operation frequency master is set by the user in a form corresponding to the multi-speed operation frequency set in the internal control unit of the inverter 4 according to the specifications of the inverter 4 to be controlled. For example, “0” is registered for operation stop, “1” for normal operation, and “2-7” for 6-level power-saving operation 1-6 with different operation frequencies (setting in FIG. 3). (See the upper right part of the support screen and the upper left part of the setting support screen in FIG. 4). For example, the frequency of the control command is set to the commercial frequency in the normal operation, the frequency of the control command is set to 0 when the operation is stopped, and the frequency of the control command is gradually decreased from the commercial frequency from the power saving operation 1 to the low power operation 6. Register with.

  The operation pattern master of the example is one in which a plurality of time-sequential daily operation schedules (operation patterns) are registered using the operation settings of the operation frequency master (see, for example, the setting support screen in FIG. 4). The operation schedule master in FIG. 5 has registered a plurality of weekly operation schedules (in this example, summer, winter, and intermediate periods) in which the operation pattern is defined for each day of the week (for example, a setting support screen in FIG. 5). (See the upper left). Further, the specific day driving pattern master in the example is a registered one of a plurality of driving patterns (for 20 days in the example) on which the driving should be performed different from the weekly driving schedule (for example, upper right of FIG. 5 setting support screen Part).

  The temperature control master of this example is a table group in which settings for performing control according to the temperature regardless of time (time) are registered for each season in the form of summer operation settings or winter operation settings.

  Specifically, as setting items, design outside air temperature, control start time and control end time for each day of the week, energy saving temperatures 1 to 6, hysteresis (for example, see the setting support screen in FIG. 6), and temperature sampling period (for example, FIG. A temperature control specification setting table (see 7 monitor screen) is registered for each seasonal setting.

  The design outside air temperature is an arbitrary temperature setting value that serves as a reference for temperature control. The energy saving temperature is a temperature difference obtained by subtracting the outside air sensor input temperature from the designed outside air temperature.

  The temperature difference is set stepwise from energy saving temperature 1 to energy saving temperature 6, and the control command corresponding to the outside air sensor input temperature is formed in one-to-one correspondence with the various operation settings of the operation frequency master. A temperature control master operation setting correspondence table, which is also provided for each seasonal setting. The operation setting correspondence table includes an operation setting 1 (60 Hz) in the range of energy saving temperature 1 or less, an operation setting 2 (55 Hz) in the range of energy saving temperature 1 to energy saving temperature 2, and an operation in the range of energy saving temperature 2 to energy saving temperature 3. Setting 3 (50 Hz), operation setting 4 (45 Hz) in the range from energy saving temperature 3 to energy saving temperature 4, operation setting 5 (40 Hz) in the range from energy saving temperature 4 to energy saving temperature 5, and range from energy saving temperature 5 to energy saving temperature 6 In the range of the operation setting 6 (35 Hz) and the energy saving temperature 6, the operation setting 7 (30 Hz) is registered (see, for example, the operation monitor screen in FIG. 7).

  The hysteresis is an adjacent energy saving system provided to avoid repeated changes (chattering) of the operation setting when the air temperature changes in the vicinity of the boundary of the adjacent energy saving temperature in the operation setting based on the operation setting correspondence table. It is a dead temperature width in the boundary transition period of the adjacent operation setting corresponding to the temperature. The temperature sampling period is an interval (time) at which the outside air sensor input temperature is collected by the temperature sensor.

  The pressure control master in this example is a table group in which settings for performing control according to the pressure in the air-conditioning medium circulation path regardless of time (time) are registered. If necessary, it may be registered for each season in the form of summer operation setting and winter operation setting.

  Specifically, the setting items include pressure in the design pipeline, control start time and control end time for each day of the week, energy saving differential pressures 1 to 6, hysteresis (see, for example, the setting support screen in FIG. 8), and pressure sampling cycle ( For example, a pressure control specification setting table in which a monitor screen (see FIG. 9) is registered is provided.

  The design pipe line pressure is an arbitrary pressure setting value that serves as a reference for pressure control (in this example, it is the water supply pressure in the pipe that is the air conditioning medium). The energy saving differential pressure is a pressure difference obtained by subtracting the sensor input pressure in the pipeline from the design pipeline pressure. In this example, in order to make the control start time and control end time different for each day of the week,

  The pressure difference is set in stages from energy saving pressure 1 to energy saving pressure 6, and a control command corresponding to the sensor input pressure in the pipe is formed in a one-to-one correspondence with the various operation settings of the operation frequency master. Is an operation setting correspondence table of the pressure control master, and this table is also provided for each seasonal setting. The operation setting correspondence table includes operation setting 1 (60 Hz) in the range of energy saving differential pressure 1 and operation setting 2 (55 Hz) in the range of energy saving differential pressure 1 to energy saving differential pressure 2 and energy saving differential pressure 2 to energy saving differential pressure. Operation setting 3 (50 Hz) in the range of 3; operation setting 4 (45 Hz) in the range of energy saving differential pressure 3 to energy saving differential pressure 4; operation setting 5 (40 Hz) in the range of energy saving differential pressure 4 to energy saving differential pressure 5; The operation setting 6 (35 Hz) is registered in the range from the differential pressure 5 to the energy saving differential pressure 6, and the operation setting 7 (30 Hz) is registered in the range larger than the energy saving differential pressure 6 (see, for example, the monitor screen in FIG. 9).

  The hysteresis is an adjacent setting provided to avoid repeated changes (chattering) of the operation setting when the air temperature changes in the vicinity of the boundary of the adjacent energy saving differential pressure in the operation setting based on the operation setting correspondence table. It is the dead pressure width in the boundary transition period of the adjacent operation setting corresponding to the energy-saving differential pressure. The pressure sampling period is an interval (time) at which the pressure sensor 8 collects the pressure in the pipe line.

  In the registration / reading means 20 of the controller 10, the MPU unit 11 performs serial communication with an external setting device 21 via the RS-232C of the interface unit 14, and reads and writes various data to and from the memory unit 13. It is something to do.

  The contents of these masters are registered / deleted or updated through the setting device 21. The setting device 21 loads the setting support screen and the monitor screen including the screens shown in FIGS. 3 to 9 from the storage unit 23 and displays the setting contents based on the setting support screen. An input unit 24 that performs an input operation, a data forming unit 25 that constructs the setting contents as data (loader data) to be registered in the controller 10 and stores the data in the storage unit 23, and registers the loader data in the controller 10 The communication means 26 for writing all the actual data or the actual data for the specified period, and the operation history data for the specified date (operation setting in one minute unit) to the storage means 23, and the communication means 26 communicates with the controller 10 to communicate with the controller 10 Monitor means 27 for displaying 10 operating states by lighting the LED and the monitor screen; and And a evaluation means 28 to aggregate achievements data and operation history data.

  That is, the setting (updating) work of the master table 2 included in the controller 10 is performed by loader communication between the communication unit 26 and the registration / reading unit 20 of the controller 10 via a communication interface such as RS-232C. In response to a request from the communication means 26 of the setting device 21, the registration / reading means 20 is activated, and the contents of the master table 2 of the controller 10 are read into the memory (storing means 23) of the setting device 21. In the setting device 21, the entry field of the setting support screen displayed by selection on the menu screen (not shown) is entered / changed by operating the input means 24 by operating a keyboard, a mouse, etc. The loader data is formed by the data forming means 25, the loader data is transmitted from the communication means 26 of the setting device 21 to the registration / reading means 20 of the controller 10, and the setting contents of the master table 2 by the registration / reading means 20 are transmitted. The update is completed by the overwrite registration process.

  On the other hand, the control selector switch 3 for selecting an operation pattern or operation schedule to be executed from the master table 2 or an operation mode in accordance with the temperature control master or the pressure control master includes two mode switches and two in this example. This is done with four dip switches consisting of one pattern switch. The correspondence between dip switch settings and control is illustrated in FIG. Note that the setting change is not limited to such hardware, and for example, setting change by software using the setting device 21 is also possible.

  By the control changeover switch 3, the inverter 4 is set in accordance with the operation pattern and operation schedule selected by the changeover switch 3 regardless of the outside air sensor input temperature and the pipe sensor input pressure. According to the mode selected by the changeover switch 3 for the time control means 5 for sending a control command (operating frequency command) and an operation according to the temperature control master based on the outside air sensor input temperature. Operation setting in accordance with the pressure control master based on the sensor input pressure in the pipe according to the mode selected by the changeover switch 3 for the temperature control means 7 for sending a control command to be set and the inverter 4 The pressure control means 9 for sending the control command is selectively operated.

  The time control means 5 in this example operates when both of the two mode switches are OFF. For example, when both of the two pattern switches are OFF, the summer driving pattern is selected. The driving pattern in this example is the weekly driving schedule, which means that the summer driving weekly schedule set using the setting device 21 is assigned to the combination of the pattern switch states.

  When the summer driving pattern (weekly driving schedule) is selected as described above, it is checked whether or not it is a specific day by referring to the specific day schedule master. The pattern is set as today's driving pattern, but if it is not a specific day, the weekly driving schedule is referred from the weekly schedule master (see the upper left part of the setting support screen in FIG. 5), and the real-time clock 1 provided in the controller 10 is set. The driving pattern corresponding to the day of the week calculated from the above is set as the driving pattern for today (see FIG. 12).

  Subsequently, referring to the operation pattern master, the operation pattern corresponding to the today operation pattern is referred to the real time clock 1 as the operation setting sequence of the operation day, and the operation setting for each time (current operation setting) ) (For example, if the normal operation of “1” is selected at that time on the setting support screen in FIG. 3), the blower fan for air conditioning equipment is filled with the commercial frequency of 50/60 Hz. Is output to the inverter 4 that drives the drive motor (see, for example, FIG. 13). When the operation pattern cannot be determined, the operation is not performed with the operation setting 0.

  On the other hand, for example, the temperature control means 7 in this example operates when the mode switch A is OFF and the mode switch B is ON, and when the pattern switch A is OFF, it is assigned to the combination of the state of the pattern switch. When the selected summer temperature control specification setting table (for example, see FIG. 6) is selected and the pattern switch A is ON, the winter temperature control specification setting table assigned to the combination of the pattern switch states is selected. (In this example, the state of the pattern switch B is irrelevant.)

  When the temperature control specification setting table is selected as described above, the operating controller 10 detects the air temperature in the air conditioning area from the temperature sensor 6 at the temperature sampling period, and calculates the energy saving temperature as described above. . Then, referring to the temperature control specification setting table, an energy saving temperature suitable for the calculated value is set as a current energy saving temperature, and referring to the operation setting correspondence table (see, for example, the monitor screen of FIG. 7), the current energy saving temperature is set. Control command corresponding to the operation setting corresponding to the temperature (for example, when the normal operation of “1” is selected at that time on the setting support screen in FIG. 3, the operation frequency is set to the full commercial frequency of 50/60 Hz. Control command) is output to the inverter 4 that drives the motor for driving the blower fan for air conditioning equipment.

  Similarly, the pressure control means 9 in this example is used when the two mode switches are both ON, or when the mode switch A is ON and the mode switch B is OFF, regardless of the state of the two pattern switches. For example, when both the pattern switches are ON, the pressure control specification setting table (see, for example, the setting support screen in FIG. 8) assigned to the combination of the pattern switch states is selected.

  When the pressure control specification setting table is selected as described above, the operating controller 10 detects the pressure in the pipe line from the pressure sensor 8 at the pressure sampling period, and calculates the energy saving differential pressure as described above. . Then, referring to the pressure control specification setting table, the energy saving differential pressure that matches the calculated value is set as the current energy saving differential pressure, and referring to the operation setting correspondence table (for example, see the monitor screen in FIG. 9) The control command corresponding to the operation setting corresponding to the energy-saving differential pressure (for example, when the normal operation of “1” is selected at that time on the setting support screen in FIG. 3, the commercial frequency is full 50/60 Hz control. Command) is output to the inverter 4 that drives the motor for driving the air-conditioning medium circulation pump.

  In this way, the output of the temperature sensor 6 or the pressure sensor 8 is sent from the analog input port of the controller 10 via the A / D converter and the photocoupler as shown in FIG. It is sampled at the sampling period registered in the pressure control specification setting table (see the monitor screens in FIGS. 7 and 9) of the pressure control master, and is reflected in the control of the inverter 4 as the energy saving temperature or energy saving differential pressure.

  The control command only needs to be in a form that allows the inverter 4 to be controlled to recognize the operation setting. For example, the control command is a form that represents an operation setting to be executed by a bit pattern by HI / LOW using a plurality of signal lines. It may be transmitted from the digital output port 29, or it represents an operation setting to be executed using a DC current value (for example, 4 to 20 mA) or a DC voltage value (for example, 0 to 5 V or 10 V) to be output. You may output from the analog output port 30 (refer FIG. 2).

  In this example, the controller 10 can calculate the power consumption and the power saving amount by the recording means 18 and store them in the database 17, and can output them to the data display unit 12 by the display means 19. ing.

  The recording means 18 samples the output power (unit: KW) of the inverter 4 from the analog input port 31 of the controller 10 through an A / D converter and a photocoupler at a cycle of one minute, and the operation history of the database 17. It is recorded in the memory unit 13 as data. The operation history data sequentially accumulates the output power sampled at a cycle of 1 minute as described above, and stores the output of each time zone converted into one of the above operation settings. Note that the operation history data (operation setting) in the example can be stored for up to 30 days.

  Also, taking the sampling from 0:00 to 23:59 on that day as one day, the date (year, month and day), the total power consumption (KWH) of the day by the integration, and the day Save the daily operating hours (minutes) as daily operating history data. In addition, the storage of the daily power consumption in the example can be performed for a maximum of 500 days, and when the recording method exceeds 30 days, new data is overwritten sequentially from the oldest data. The method is adopted.

  Further, the recording means 18 calculates the total power consumption and power saving rate for a certain period using the operation history data, and records them in the memory unit 13 as actual data of the database 17. Note that the calculation uses reference power data (reference power value) registered in advance in the database 17 by the setting device 21, and the reference power data includes a certain period during normal operation (commercial frequency operation). The power consumption value is used. The power saving rate is calculated as a ratio (%) of the difference between the power consumption value and the reference power value to the reference power value when the power consumption value is 0.1 kW or more and less than the reference power value. When the power consumption value exceeds the reference power value, the power saving rate is set to 0 (%).

  The setting device 21 collects all result data or result data for a specified period, and operation history data for a specified date from the controller 10 via its registration / readout means 20 and the communication means 26 of the setting device 21. Record in the storage means 23 of the setting device 21. In addition, the monitor means 27 uses the actual data as an operating power monitor, an analog output state monitor, a digital output state monitor, a current power saving rate monitor, a today operation pattern monitor, and a current operation setting monitor of the controller 10 in operation. The operation history data is output by the display means 22 in a predetermined monitor image format suitable for each of the monitor processes.

  The used power monitor displays the used power collected from the analog input port 31 of the controller 10 as a% value and a KW scaling value, and the analog output state monitor displays a control command for the inverter 4 as a% value (see FIG. 7, 9 and 10 monitor screen (refer to the left middle part), the digital output state monitor displays a control command (operation setting) for the inverter 4 in a 3-bit on / off pattern (FIGS. 7, 9 and FIG. The current power saving rate monitor displays the current power saving rate as a% value (see the lower right corner of the monitor screens of FIGS. 7, 9 and 10). The operation pattern on the day of operation is displayed as a number and time chart (see the upper right part of the monitor screen in FIG. 10), and the current operation setting monitor Show number of settings (Figure 7, upper reference in FIGS. 9 and 10 monitor screen). The display is performed using a liquid crystal panel or LED as a display means.

  In particular, when the temperature control means 7 is in operation, a sensor input temperature monitor (see the monitor screen of FIG. 7) and an input average temperature monitor are performed. When the pressure control means 9 is in operation, a sensor input pressure monitor (see FIG. 9) is used. And monitor the input average pressure.

  The sensor input temperature monitor displays sensor input temperature data collected from the analog input port 32 of the controller 10 at a scaling temperature ° C, and further displays mA for current input and V for voltage input. . The input average temperature monitor displays the average value of the sensor input temperature in the sampling period. Similarly, the sensor input pressure monitor displays sensor input pressure data collected from the analog input port 33 of the controller 10 as a scaling pressure MPa, and further displays mA for current input and V for voltage input. Do. The input average pressure monitor displays the average value of the sensor input pressure in the sampling period.

  Furthermore, the evaluation means 28 creates evaluation data for a certain period, for example, monthly or yearly, from the operation history data and performance data. The evaluation data in this example are operating time (H), electric energy (KWH), reduction rate (%), reduction amount, CO2 emission (Kg), crude oil equivalent (L), and the electric energy (KWH) ), CO2 emissions (Kg), and crude oil equivalent (L), when the above controller is not controlled: no control, actual consumption under control by the controller: consumption, and above The amount of consumption reduced by the control by the controller 10: the amount of reduction is clearly indicated, and the amount of reduction is calculated as 12 yen / KWH in summer and 11 yen / KWH in winter.

  The evaluation data is displayed as an evaluation screen shown in FIGS. FIG. 14 shows the results for one month spanning two months, and FIG. 15 shows the monthly data for one month, and graphs the consumption and reduction amount of power. Is. FIG. 16 shows monthly data for each month, and FIG. 17 is a graph showing the consumption amount and the reduction amount of the electric energy in the annual data.

  In relatively large-scale air conditioning equipment installed in buildings such as various plants, hospitals, schools, and event halls, controller control by a computer system is applied to inverters of multiple drive means such as compressors, pumps, and blower fans. By adopting a control method that is relatively easy to introduce, it is possible to easily select independent control for each drive means, or control in which a plurality of drive means are linked, and furthermore, time control is adopted for the controller control. By doing so, detailed power consumption reduction measures can be taken according to the time.

It is the block diagram which showed the function structure of the air-conditioning equipment control controller by this invention. It is the block diagram which showed the hardware constitutions of the air-conditioning equipment control controller by this invention. It is the figure which showed an example of the setting assistance screen of the operation setting with respect to the air-conditioning equipment control controller by this invention. It is the figure which showed an example of the setting assistance screen of the operation pattern with respect to the air-conditioning equipment control controller by this invention. It is the figure which showed an example of the setting assistance screen of the weekly operation schedule and specific day operation pattern with respect to the air-conditioning equipment control controller by this invention. It is the figure which showed an example of the setting assistance screen of the temperature control master with respect to the air-conditioning equipment control controller by this invention. It is the figure which showed an example of the power consumption monitor at the time of temperature control of the air-conditioning equipment control controller by this invention, an analog output state monitor, a digital output state monitor, a present power saving rate monitor, and a present operation setting monitor screen. It is the figure which showed an example of the setting assistance screen of the pressure control master with respect to the air-conditioning equipment control controller by this invention. It is the figure which showed an example of the power consumption monitor at the time of pressure control of the air-conditioning equipment control controller by this invention, an analog output state monitor, a digital output state monitor, a present power saving rate monitor, and a present operation setting monitor screen. The figure which showed an example of the power consumption monitor at the time control of the air-conditioning equipment control controller by this invention, an analog output state monitor, a digital output state monitor, a present power saving rate monitor, today's operation pattern monitor, and a present operation setting monitor screen is there. It is the figure which showed an example of the switching condition of the control mode by the control change switch of the air-conditioning equipment control controller by this invention, and an operation pattern. It is the figure which showed an example of the flow until an operation command is output in the air-conditioning equipment control controller by this invention. It is the figure which showed an example of the operation pattern in the air-conditioning equipment control controller by this invention. It is the figure which showed an example of the evaluation screen with respect to control of the air-conditioning equipment control controller by this invention. It is the figure which showed an example of the evaluation screen with respect to control of the air-conditioning equipment control controller by this invention. It is the figure which showed an example of the evaluation screen with respect to control of the air-conditioning equipment control controller by this invention. It is the figure which showed an example of the evaluation screen with respect to control of the air-conditioning equipment control controller by this invention.

Explanation of symbols

1 real time clock, 2 master table, 3 selector switch,
4 inverter, 5 time control means, 6 temperature sensor, 7 temperature control means,
8 pressure sensor, 9 pressure control means,
10 controller, 11 MPU section, 12 data display section,
13 memory section, 14 interface section, 15 switch section,
16 power supply unit, 17 database, 18 recording means, 19 display means,
20 registration / reading means,
21 setting device, 22 display means, 23 storage means, 24 input means,
25 data forming means, 26 communication means, 27 monitoring means, 28 evaluation means,
29 digital output ports, 30 analog output ports,
31 analog input port,
32 analog input ports, 33 analog input ports,

Claims (5)

A controller for controlling the output of an inverter for air conditioning equipment,
Real-time clock (1) for specifying the operation date and time, an operation frequency master in which the set frequencies of each of a plurality of operation settings are stored, and an operation pattern master in which a plurality of operation patterns in which the operation settings are combined in time series are stored And a master table (2) comprising an operation schedule master storing a plurality of operation schedules formed by combining a plurality of the operation patterns in time series, and
A control changeover switch (3) for selecting an operation pattern or an operation schedule to be executed from among a plurality of operation patterns and operation schedules provided in the master table (2);
Time control means (5) for sending an operation setting control command in accordance with the operation pattern or operation schedule selected by the changeover switch (3) to the inverter (4) which drives the motor of the blower fan for air conditioning equipment. )When,
Air conditioner control controller equipped with.   The air conditioning equipment controller according to claim 1, wherein the master table (2) includes a specific day operation pattern master that stores the operation pattern for a specific day in which a plurality of the operation settings are combined in time series.   A temperature sensor (6) for detecting the temperature of the air-conditioned space, and a temperature in which the operation setting to be executed is determined according to the difference between the detected temperature of the temperature sensor (6) and the set temperature in the master table (2) A temperature control means (7) for sending a control command for operation setting in accordance with the temperature control master to the inverter (4), and selecting a control mode of the temperature control means (7); The air-conditioning equipment control controller in any one of the said Claim 1 or Claim 2 provided with the control changeover switch (3) to perform.   A pressure sensor (8) for detecting the pressure in the air conditioning medium circulation path is provided, and the operation setting to be executed is set in the master table (2) according to the difference between the detected value and the set value of the pressure sensor (8). A pressure control master (9) that sends a control command for setting operation based on the pressure control master to the inverter (4), and a control of the pressure control means (9) The air conditioner control controller according to any one of claims 1 to 3, further comprising a control changeover switch (3) for selecting a mode. A controller for controlling the output of an inverter for air conditioning equipment,
A pressure sensor (8) for detecting the pressure in the air conditioning medium circulation path;
A master table including an operation frequency master in which set frequencies of each of a plurality of operation settings are stored, and a pressure control master that determines an operation setting to be executed according to a difference between a detected value of the pressure sensor and a set value ( 2) and
Pressure control means (9) for sending a control command for setting operation based on the pressure control master to the inverter (4);
Air conditioner control controller equipped with.