JP2010236748A - Air conditioning system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioning system fairly proportionally dividing power consumption in a common part of a building or the like, and carrying out charging according to the distribution. <P>SOLUTION: When use reservation of the common part in the first floor is carried out from each tenant through a terminal or the like installed in each tenant, a central management device 10 inputs the use reservation information and stores it as a use history of the common part in a memory 12. When an indoor unit 30 of the common part is operated at the reserved time and date, the central management device stores an operating condition of the indoor unit in the memory. Then, in the central management device, the total power consumption in the air conditioning system 1 is acquired at a predetermined time, for example, at the end of the month, and it is proportionally divided to each coolant system. In the central management device, after proportionally dividing the power consumption in regard to the common part of the first floor per indoor unit and calculating respective power use fees, charging of the power use fee to each tenant having used the common part is carried out on the basis of the use history stored in the memory. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an air conditioner system including a central management device to which a plurality of air conditioners are connected and which distributes the charge for use of these air conditioners, and in particular, the charge for use of an air conditioner installed in a common section The present invention relates to an air conditioning system that apportions.

  Conventionally, in an air conditioning system consisting of a central management device that is communicably connected to a plurality of air conditioners installed on each floor of a building or the like where a plurality of tenants are occupying, the power consumption of the entire air conditioning system is determined for each tenant. Each indoor unit installed in the system is apportioned at a ratio according to the usage status, and a charge corresponding to this is charged for each tenant.

  The apportionment of power consumption depends on the indoor unit operating conditions such as the degree of opening and closing of the refrigerant throttle valve of each indoor unit and the current value flowing during operation, etc., or the intake temperature, blowout temperature, and air volume For example, a method of using the operation information of the indoor unit is known, such as calculating the cooling operation capacity or the heating operation capacity from the above and calculating the power consumption for each indoor unit. Also, when apportioning the power consumption, the central management device collectively apportions the power consumption of each indoor unit, or after the central management apportioning the power consumption for each refrigerant system, There are known methods such as apportioning the power consumption of each indoor unit to which the outdoor unit is connected in the refrigerant system, and transmitting the value to a central management device.

  Based on the apportioned power consumption in this way, the central management unit calculates the power usage fee for each indoor unit and charges the tenant who uses the indoor unit. Each tenant can be charged fairly according to the usage of indoor units.

  However, in the method described above, the user is not specified for the power usage fee of the indoor unit installed in the so-called shared part, which can be used in common by various tenants such as conference rooms and business rooms, For example, all tenants occupying will be charged equally or in a form of sharing at a predetermined ratio. In this case, even if the tenant has been away for a long time for some reason, or even if the shared part is not used or only used for a short time, a fixed fee will be borne. There was a problem of unfairness.

  Therefore, it is possible to select either the predetermined fixed value in the exclusive part of the building or the proportional variation value that varies every month for the billing of the power usage fee for the indoor unit in the common area, and the selected proportional value It has been proposed to apportion the amount of power consumption using and to charge according to this (see, for example, Patent Document 1).

  Patent Document 1 discloses a system in which each tenant is resident in a system that apportions electricity, gas, water, etc. to tenants occupying the building and charges according to the tenants. The apportionment ratio of the power consumption is determined by the apportionment fixed value that determines the apportionment ratio of the power consumption with a fixed value such as the area (exclusive area) and the monthly variable such as the utility costs used by each tenant The apportioned variation value to be selected can be selected, and the usage amount of electricity, gas, water, etc. in the common part is apportioned at the selected apportioning ratio, and charging is performed to each tenant according to this.

  The apportionment ratio can be selected from either apportioned fixed value or apportioned variable value. Normally, when all tenants exist in a building, the apportioned fixed value is used to determine billing for common areas, and there is no tenant for a long period. In such a case, if the apportioned variation value is used, there will be no problem of sharing the usage fee for the shared portion when the tenant is absent.

  However, in the method described above, the apportionment ratio is determined by a fixed value such as the occupied area of each tenant and a fluctuation value such as utility costs during each predetermined period of each tenant. There is no direct relationship with frequency. For example, it is not necessarily the case that the conference room is used frequently because the area occupied is large, and that the business room is used frequently because the monthly utility costs are high. The usage frequency of the shared part is considered to be influenced by the circumstances, and there is a possibility that the charge is not truly fair in accordance with the actual usage state of the shared part.

Japanese Patent Application Laid-Open No. 11-282903 (term 3, FIG. 2)

  An object of the present invention is to solve the above-described problems, and to provide an air conditioning system that can equally apportion the power consumption in a common part such as a building and can charge according to this.

  In order to solve the above-described problems, the present invention relates to one or more outdoor units, a plurality of indoor units, and the outdoor units and the indoor units that are communicably connected to each other. A central management device that performs centralized management of the indoor units, the central management device apportioning usage charges according to operating conditions of the plurality of indoor units, and charging users of the plurality of indoor units with the usage charges In the air conditioning system, the usage fee for the shared unit is apportioned for each shared unit user based on the usage history of the shared unit, and charged for each shared unit user.

  The invention relating to claim 2 is characterized in that the use history is use reservation information of the shared unit.

  Furthermore, the invention relating to claim 3 is characterized in that the central management device performs timer operation of the indoor unit installed in the shared unit based on the use reservation information.

  The invention according to claim 1 and claim 2 is that the central management device uses the usage history of an indoor unit installed in a common part in a building such as a conference room or a business meeting room. By identifying and apportioning users with reference to the reservation information entered from the terminals owned by the company, and charging usage fees to each tenant accordingly, it is fair according to the actual usage history of the shared unit Can be charged.

  Further, in the invention according to claim 3, the central management device performs the timer operation of the indoor unit installed in the common unit with the use time included in the use reservation information of the common unit input by the tenant. You won't forget to turn off the indoor unit later, and you can charge more accurately.

It is a figure which shows the structure of the air conditioning system which is an Example of this invention. It is a block diagram of the central management apparatus in the Example of this invention. It is the management table which the central management apparatus in the Example of this invention holds. It is a common part reservation table which the central management apparatus in the Example of this invention holds. It is the electricity rate apportionment table which the central management apparatus in the Example of this invention holds. It is a flowchart which shows the control in the central management apparatus by this invention.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, as an example, various tenants moved in, and the 2nd to 9th floors were set up in a 9-story building where the tenants occupy a dedicated part and the 1st floor was a shared part that each tenant could use. An air conditioning system will be described as an example.

  FIG. 1 is a configuration explanatory diagram of an air conditioning system. This air conditioning system 1 is composed of a plurality of outdoor units 20, a plurality of indoor units 30, and a central management device 10 connected to these by a network 50, which are on the first floor of the building (in FIG. 1). 1F) to 9th floor (described as 9F in FIG. 1). Moreover, although illustration is abbreviate | omitted, the air conditioning system 1 is connected to the commercial power source via the wattmeter, and the wattmeter is connected with the central management apparatus 10 by the communication line.

  A plurality of outdoor units 20 and 30 are installed on each floor of the building. For example, as shown in FIG. 1, there are three outdoor units 20 and 20 indoor units 30 on the first floor, Two outdoor units 20 and 20 indoor units 30 are installed, and two outdoor units 20 and 20 indoor units 30 are installed on the 9th floor. Similarly, on the other floors, a plurality of outdoor units 20 and indoor units 30 are respectively installed.

  As shown in FIG. 1, identification information is given to each outdoor unit 20 and each indoor unit 30. For example, the outdoor unit 20 installed on the first floor has identification information: 1F101 to 1F103, and the indoor unit 30 has identification. Information: 1F001 to 1F020. Similarly, the outdoor unit 20 installed on the second floor has identification information: 2F101 and 2F102, the indoor unit 30 has identification information: 2F001 to 2F020, and the outdoor unit 20 installed on the ninth floor has identification information. : 9F101 and 9F102, and identification information: 9F001 to 9F020 for the indoor unit 30. The identification information is similarly given to the other floors, but the description is omitted.

  The indoor units 30 are dispersed on each floor and connected to the outdoor unit 20, thereby providing a plurality of refrigerant systems. For example, on the first floor, six indoor units 30 with identification information: 1F001 to 1F006 are connected to the outdoor unit 20 with identification information: 1F101 by a pipe 40 to constitute the refrigerant system L1-1. Similarly, eight indoor units 30 of identification information: 1F007 to 1F014 are connected to the outdoor unit 20 of identification information: 1F102 by a pipe 40 to constitute the refrigerant system L1-2, and the outdoor unit of identification information: 1F103 20, six indoor units 30 of identification information: 1F015 to 1F020 are connected by a pipe 40 to constitute a refrigerant system L1-3.

  On the second floor, 10 indoor units 30 with identification information: 2F001 to 2F010 are connected to the outdoor unit 20 with identification information: 2F101 by a pipe 40 to form a refrigerant system L2-1. Identification information: 2F102 Ten indoor units 30 having identification information: 2F010 to 2F020 are connected to the outdoor unit 20 by pipes 40 to constitute a refrigerant system L2-2. On the 9th floor, 10 indoor units 30 of identification information: 9F001 to 9F010 are connected to the outdoor unit 20 of identification information: 9F101 by a pipe 40 to constitute the refrigerant system L9-1, and the identification information: outdoor unit of 9F102 20, ten indoor units 30 with identification information: 9F010 to 9F020 are connected by a pipe 40 to constitute a refrigerant system L9-2. For the other floors, the outdoor unit 20 and the indoor unit 30 similarly form a refrigerant system, but the description thereof is omitted.

  The outdoor unit 20 and the indoor unit 30 are connected to the central management apparatus 10 via the network 50, and can communicate with each other. The administrator can perform management control of the entire air conditioning system 1 from the central management device 10 such as initial setting when the air conditioning system 1 is installed and whether air conditioning control for each floor is performed without any problem. Each indoor unit 30 includes a remote controller (not shown) for operating the indoor unit 30. This remote controller can instruct only the corresponding indoor unit 30 to start / stop operation, determine an operation mode, set temperature and air volume, set wind direction plate operation, and the like.

  FIG. 2 is a block diagram of the central management apparatus 10. The central management device 10 includes a storage unit 12 that stores management data such as operation setting information of the outdoor unit 20 and the indoor unit 30 as a management table, and a communication unit that is an input / output interface for signals to and from the outdoor unit 20 and the indoor unit 30. 13, a system communication unit 14 that is an input / output interface of signals with a management system installed in a building other than the air conditioning system 1, an operation unit 15 such as a keyboard and a mouse, a display unit 16 including a liquid crystal panel, And a control unit 11 for controlling them.

  The central management apparatus 10 inputs instructions for the air conditioning system 1 from the operation unit 15 by the operation of the manager, displays the instruction data on the display unit 16, and sends these instructions to the outdoor unit via the communication unit 13. It transmits to the machine 20 and the indoor unit 30. The outdoor unit 20 and the indoor unit 30 that have received this instruction execute instructions regarding operating conditions such as operation start / stop, determination of an operation mode such as cooling / heating, change of set temperature, and the like according to the instruction content. When executed as instructed, the latest operation setting information of the outdoor unit 20 and the indoor unit 30 is transmitted as operation setting data to the central management device 10, and the central management device 10 is based on the operation setting information data. The management table in the storage unit 12 is updated.

  FIG. 3 is an explanatory diagram of a management table held by the central management apparatus 10. This management table is for managing the installation location and identification information of the outdoor unit 20 and the indoor unit 30 and for grasping the operation setting information in real time, and can be displayed and checked by the administrator on the display unit 16. It can be done. This management table stores the operation setting information when the operation setting information is periodically changed by the operation setting condition or the operation of the remote controller that is periodically received from the outdoor unit 20 or the indoor unit 30, or by operating the central management device 10. Is updated as needed.

  This management table includes items that are defined when the air conditioning system 1 is installed and items that are updated during normal operation. Items specified at the time of installation include the floor, the refrigerant system of the indoor unit 30 and the outdoor unit 50, the installation location, identification information, and the type. The refrigerant system is connected to the outdoor unit 20 and the plurality of indoor units 30 on the floor. This shows the system. The installation location indicates the installation location of the outdoor unit 20 or the indoor unit 30 on the floor. For example, if the indoor unit 30 of the refrigerant system: L1-1, the installation location is the conference rooms A to F and the refrigerant system L1-2. This indicates that the installation locations are the negotiation rooms A to D and the reception rooms A to C. The identification information is used for identifying a communication partner in the communication in the air conditioning system 1.

  Items updated in normal operation include operation mode, power supply, room temperature, set temperature, and timer operation. The operation mode is distinguished from cooling / heating, the power is turned on / off of the target indoor unit 30, the room temperature is the current temperature of the room in which the indoor unit 30 is installed, and the set temperature is set for each indoor unit 30. The target indoor temperature and timer operation indicate the operation start time and operation end time when the indoor unit 30 is operated by the timer. Although not shown, items necessary for apportioning power such as air volume, wind direction plate operation, heat exchanger temperature and suction temperature are also provided in the management table. In addition, although there are dedicated control items for the control items of the outdoor unit 50, they are not described because they are not directly related to the description of this embodiment. In addition, although illustration is omitted, in addition to these

  In the configuration described above, when a reservation for use of a shared section on the first floor from each tenant is made by a terminal of a building management system (not shown) installed in the tenant, the use reservation information is transferred from the building management system to the central management device. 10 is transmitted. The central management apparatus 10 inputs the use reservation information and stores it in the storage unit 12. When the indoor unit 30 of the shared unit is operated at the reserved date and time, the central management apparatus 10 stores the operation state of the indoor unit 30 in the storage unit 12. Then, the central management device 10 obtains the total usage fee in the air conditioning system 1 at a predetermined time, for example, at the end of the month, and apportions this for each refrigerant system based on the operating conditions of the outdoor unit 20 in each refrigerant system. .

  Since the central management device 10 is an exclusive part from the 2nd floor to the 9th floor, the usage charge apportioned for each refrigerant system is further apportioned for each indoor unit 30, and for each tenant where the indoor unit 30 is installed. Charge the usage fee according to the operating conditions. In addition, the central management device 10 distributes the usage fee for each indoor unit 30 for the shared unit on the first floor, as in the above-described dedicated unit, and then uses the reservation for the shared unit usage history stored in the storage unit 12. Based on the information, charges are apportioned to each tenant that uses the shared section.

  Next, a specific apportioning method of usage charges in the common part of the air-conditioning system 1 in this embodiment will be described with reference to FIGS. 1 to 5. In the following description, the power usage fee for each indoor unit 30 is used as a usage fee, and the distribution of the usage fee is based on the power consumption in each indoor unit 30 calculated using the operating conditions of each indoor unit 30. This will be described as an example. FIG. 4 is a shared unit reservation table stored in the storage unit 12 of the central management apparatus 10. FIG. 5 is an electricity rate apportioning table stored in the storage unit 12 of the central management apparatus 10. Here, the following explanation will be made on the assumption that the usage fee will be apportioned in the common areas in July.

  A tenant's tenant uses the building management system to make a July use reservation for the common area on the first floor. The central management device 10 communicates with the building management system periodically, for example, twice a day at the start of work (9:00) and at the end of work (17:30), and receives shared part use reservation information from each tenant. Upon receipt, the July shared part reservation table shown in FIG. 4 is created and stored in the storage unit 12.

  This common part reservation table is composed of a facility name, an installed indoor unit, a reservation person, a reservation date, and a reservation time, and the facility name exists on the first floor such as the first floor conference room A and the first floor business meeting room A. The name of the common part is shown. The installed indoor unit indicates the indoor unit 30 installed in the common unit, and is displayed with identification information of the indoor unit 30. The reservation person indicates the name of the tenant who reserved the shared part, and the reservation date and the reservation time indicate the reservation date and time of the shared part. This shared section reservation table is updated as needed based on shared section use reservation information obtained by the central management apparatus 10 from the building management system.

  For example, the usage reservation status of the first-floor meeting room A in July is that tenant A is 10:00 to 12:00 on July 1, and tenant Y is 14:00 to 15:00 on July 2. If there is a reservation, and if there is a day reserved until the end of the month, it will be displayed. The same applies to other shared parts.

  When the central management device 10 reaches the end of the month (July 31 in this embodiment), the cumulative value of the total power consumption of the air conditioning system 1 is input from a power meter (not shown), and the difference from the cumulative value up to the previous month is calculated. The power usage fee corresponding to this is calculated. The central management apparatus 10 apportions the total power consumption using a known method, for example, the power consumption coefficient based on the operation information of the outdoor unit 20 such as the operation current of the compressor of each outdoor unit 20 and the operation wind speed of the blower. Then, the amount of power consumption in each refrigerant system is calculated.

  Next, the central management device 10 uses a known method, for example, the operating rate calculated from the operating conditions of the indoor unit 30 such as the temperature difference at the refrigerant inlet / outlet of the heat exchanger of each indoor unit 30 and the set wind speed of the blower, Using the rated power consumption of 30, the power consumption by refrigerant system is apportioned to calculate the power consumption in each indoor unit 30.

  As for the exclusive section from the 2nd floor to the 9th floor, since it is known in which tenant each indoor unit 30 is installed, the central management device 10 is based on the power consumption apportioned for each indoor unit 30. The power usage fee is calculated, and the power usage fee is charged for each tenant in which the indoor unit 30 is installed.

  Next, charging of the power usage fee of the shared unit will be described. The central controller 10 that has calculated the power consumption for each indoor unit 30 in the first floor shared section creates a July electricity rate apportioning table as shown in FIG. This electricity rate apportioning table is composed of facility name, installed indoor unit, fee, tenant name, date of use, usage time, power consumption, total power consumption, and billing.

  The facility name indicates the name of the shared unit, and the installed outdoor unit indicates the indoor unit installed in the shared unit by identification information, and is displayed by the identification information of the indoor unit 30. The charge indicates a power usage charge for one month (July in this embodiment) calculated from the power consumption in the indoor unit 30. The tenant name indicates the name of the tenant using the shared part, and the use date and use time indicate the use date and time of the shared part. The power consumption indicates the amount of power consumed by the indoor unit 30 within the usage time, and the total power consumption indicates that the tenant used the indoor unit 30 for one month (in this example, in July). The total power consumption is shown. The billing indicates the billing amount of the power usage fee charged to the tenant calculated from the total power.

For example, when tenant A uses conference room A on the first floor in July, the power consumption generated using indoor unit 30 (identification information: 1F001) is 1.8 kilowatts on July 1st, July 4 days is 1.0 kilowatt, ... July 28 is 1.2 kilowatts, a total of 20.2 kilowatts. Since the power consumption in July in the first floor meeting room A is 418.6 kilowatts, the central management device 10 apportions the amount of power consumption in July for the tenant A as follows: This is calculated by multiplying the July electricity usage fee.

20.2 (kilowatts) /418.6 (kilowatts) x 9,210 (yen) = 444 (yen)

The central management device 10 inputs the billing amount calculated as described above into the electricity rate apportioning table, and stores the electricity rate apportioning table in the storage unit 12. Hereinafter, other tenants are similarly charged by using the first floor conference room A.

  In addition, when a plurality of indoor units 30 are installed as in the first-floor multipurpose hall shown in FIG. 5, the power consumption in each indoor unit 30 is integrated, and one indoor unit 30 is installed below. In the same manner as described above, the billing amount of the power usage fee may be calculated by multiplying the total power amount divided by the power consumption amount for each tenant and the power fee in the shared unit.

  If the operation of the indoor unit 30 in the common unit is operated by a timer according to the reservation date and time of the common unit reservation table shown in FIG. 4, the user can forget to turn off the indoor unit 30 after using the common unit. In addition, unnecessary power consumption can be prevented, and more accurate power usage charges can be charged for each tenant in accordance with the actual usage status of the shared unit. Further, in the above description, the charge is calculated with the input timing of the total power consumption as the end of the month and the power consumption is apportioned. However, for example, this may be done every hour and apportioned each time. .

  Next, the flow in the case where the charge amount of the power usage fee of the common unit in the air conditioning system 1 is calculated in the air conditioning system 1 will be described using the flowchart representing the processing in the control unit 11 of the central management device 10 shown in FIG. The flowchart in FIG. 6 shows processing from the instruction for calculating the charge amount of the power usage fee by the administrator to the calculation of the charge amount of the power usage fee for each tenant. In FIG. 6, ST indicates a step, and the subsequent numbers indicate step numbers.

  The control unit 11 determines whether or not there is an instruction for calculating a charge amount of the power usage fee by the administrator who operates the central management apparatus 10 (ST1). If there is no charge calculation instruction (ST1-No), the control unit 21 performs normal air operation such as timer operation management of each indoor unit 30, input management of operating conditions from each outdoor unit 20 or each indoor unit 30, and the like. Management of the harmony system 1 is continued (ST7), and the process jumps to ST1.

  If there is an instruction to calculate the charge amount (ST1-Yes), the control unit 11 inputs the cumulative value of the total power consumption in the air conditioning system 1 from the power meter, calculates the total power consumption for this month, The power consumption is apportioned for each refrigerant system (ST2). Next, the control part 11 distributes the electric power consumption in each refrigerant | coolant system | strain for every indoor unit 30 (ST3).

  Next, the control unit 11 refers to the management table to determine whether or not the indoor unit 30 that is the target for calculating the charge amount of the power usage fee is installed in the shared unit (ST4). If the indoor unit 30 is installed in the shared unit (ST4-Yes), the control unit 11 creates an electricity rate apportioning table from the power consumption of the target indoor unit 30 and the shared unit reservation table ( ST5).

  Then, the control unit 11 calculates a charge amount from the power consumption amount of the target indoor unit 30 (total power in FIG. 5) and the power consumption amount for each tenant using the shared unit (ST6), and jumps to ST1. . If the target indoor unit 30 is not installed in the common unit in ST4 (ST4-No), the control unit 11 determines that the target indoor unit 30 is installed in the exclusive unit, For each tenant in which the target indoor unit 30 is installed, a billing amount of a power usage fee corresponding to the power consumption in the indoor unit 30 is calculated (ST8), and the process jumps to ST1.

  As described above, according to the present invention, the central management device uses the usage history of the shared unit such as a conference room or a business meeting room, etc. Users are identified and apportioned by referring to the reservation information entered from the terminal they own, and by charging usage fees to each tenant accordingly, it is fair to match the actual usage history of the shared unit Charges can be made.

  In addition, the central management unit performs timer operation of the indoor unit installed in the shared unit for the usage time included in the shared part use reservation information entered by the tenant, so that the indoor unit is not forgotten to be turned off after using the shared unit , More accurate usage charges can be charged.

  In the embodiment described above, the total power consumption in the air conditioning system is apportioned to determine the power consumption in each indoor unit, and the usage fee corresponding to this is calculated. For example, the usage fee may be apportioned according to operating conditions such as the degree of opening and closing of each indoor unit refrigerant throttle valve and the current value flowing during operation. In addition, the method of apportioning the electric power consumption for each refrigerant system and further apportioning it for each indoor unit has been explained. However, the electric energy apportioned for each refrigerant system is divided into the electric power consumption in the outdoor unit and the consumption in each indoor unit. It is possible to divide the power consumption into the outdoor units and apportion the power consumption in the outdoor unit for each indoor unit.

  In addition, although the explanation was made using the shared part use reservation information input from the building management system terminal as the use history of the common part, the reading information of the ID card or the PIN number when entering the common part is used as the use history. However, the usage fee may be apportioned.

DESCRIPTION OF SYMBOLS 1 Air conditioning system 10 Central management apparatus 11 Control part 12 Memory | storage part 20 Outdoor unit 30 Indoor unit 40 Piping 50 Network

Claims (3)

One or a plurality of outdoor units, a plurality of indoor units, and a central management device connected to the outdoor units and the indoor units so as to be communicable and performing centralized management of the outdoor units and the indoor units. In the air conditioning system, the device apportions the usage fee according to the operating conditions of the plurality of indoor units, and charges the usage fee to a user of the plurality of indoor units.
An air conditioning system characterized by apportioning a charge for use of a shared unit for each shared unit user based on a usage history of the shared unit and charging for each shared unit user.   The air conditioning system according to claim 1, wherein the use history is use reservation information of the shared unit.   The air conditioning system according to claim 2, wherein the central management device performs timer operation of the indoor unit installed in the shared unit based on the use reservation information.

Images