JP2010145070A - Air conditioning management device - Google Patents

Air conditioning management device Download PDF

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JP2010145070A
JP2010145070A JP2008325701A JP2008325701A JP2010145070A JP 2010145070 A JP2010145070 A JP 2010145070A JP 2008325701 A JP2008325701 A JP 2008325701A JP 2008325701 A JP2008325701 A JP 2008325701A JP 2010145070 A JP2010145070 A JP 2010145070A
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time
air conditioner
change rate
indoor
temperature change
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JP5312010B2 (en
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Taichi Ishizaka
Yasushi Sato
靖 佐藤
太一 石阪
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Mitsubishi Electric Corp
三菱電機株式会社
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Abstract

Even when a plurality of air conditioners are installed in one space, the time from the calculated start time to the set time and the time from the actual start of the air conditioner to the set temperature are calculated. An air conditioning management device capable of reducing errors is obtained.
An air conditioner management unit 3 that acquires information on an indoor temperature detected for each indoor unit 30 and data management that stores at least a reference indoor temperature change rate αbase , and information on a set temperature and a use start time. Unit 2 and a startup time calculation unit 1 that obtains the startup time of the target indoor unit 30a so as to reach the set temperature at the use start time based on at least the reference indoor temperature change rate αbase and the room temperature. Is for determining the degree of influence of the indoor unit 30 other than the target indoor unit 30a on the reference indoor temperature change rate αbase of the target indoor unit 30a, and correcting the reference indoor temperature change rate αbase of the target indoor unit 30a.
[Selection] Figure 1

Description

  The present invention relates to an air conditioning management device that controls operations of a plurality of air conditioners.

  In buildings such as buildings, it is desired that a comfortable environment (set temperature) is set in advance at the use start time (set time). As a method for realizing this, there has been proposed a method of starting an air conditioner so as to achieve a target set temperature at a target set time.

  For example, in the heating period, the room temperature immediately before starting the air conditioner, the room humidity, and the room temperature at an appropriate time during the day before, in the cooling period, the room discomfort index immediately before starting the air conditioner, the discomfort of the outside air The index and the room discomfort index at an appropriate time during the day before are selected as explanatory variables, and these are used as input variables of the neural network to predict the preheating time or the precooling time. "A method for calculating the optimum start time characterized in that the start time of the air conditioner is calculated so that the temperature or the discomfort index reaches a target value" is disclosed (for example, see Patent Document 1). .

  For example, if the peak of the thermal load predicted by the first precooling or preheating time candidate exceeds a predetermined threshold, the second precooling or preheating time that is larger than the first precooling or preheating time candidate. A thermal load prediction apparatus that performs thermal load prediction again with a candidate is disclosed "(for example, see Patent Document 2).

JP-A-9-229449 (Claim 1) JP 2006-029607 A (Claim 1)

  When an air conditioner is arranged in a building such as a building, a plurality of air conditioners (indoor units) may be installed in one space. In this case, the ambient temperature changes depending on the air conditioners installed in the vicinity, and this affects the time from the start time of the air conditioner to the set temperature.

  However, the conventional air-conditioning management apparatus calculates the optimum start time for each air conditioner and does not consider the status of surrounding air conditioners. For this reason, there has been a problem that an error occurs between the calculated time from the start time to the set time and the time from the actual start of the air conditioner to the set temperature.

  Such an error reduces the operating efficiency of the air conditioner and reduces the comfort of the indoor environment. For example, when the activation time later than the optimum activation time is calculated, the set temperature is not reached at the set time, and the comfort of the indoor environment is reduced. In addition, for example, when an activation time that is earlier than the optimal activation time is calculated, the temperature becomes a set temperature before the set time, resulting in waste of operation and a decrease in operation efficiency.

In addition, since the conventional air conditioning management apparatus performs a complex calculation using a large amount of data when calculating the startup time, it cannot use a calculation means (such as a CPU) having a low processing capacity. There was a point.
For example, a CPU for an embedded device used in a general air conditioner has a low processing performance, so that it is difficult to introduce a conventional calculation method.

  This invention was made in order to solve the above problems, and a first object is to set a set time from a calculated start time even when a plurality of air conditioners are installed in one space. It is possible to obtain an air conditioning management device that can reduce an error between the time until the temperature reaches the set temperature after actually starting the air conditioner.

  Moreover, the 2nd objective is to obtain the air-conditioning management apparatus which can calculate starting time by easy calculation.

  An air conditioning management device according to the present invention is an air conditioning management device that controls the operation of a plurality of air conditioners, the air conditioner management unit that acquires information on a room temperature detected for each of the air conditioners, and at least the air conditioning Based on at least the indoor temperature change rate and the indoor temperature, a data management unit that stores the indoor temperature change rate, which is the rate of change of the indoor temperature per unit time due to operation of the machine, and information on the set temperature and use start time A start time calculating unit that calculates a start time of the air conditioner so that the set temperature is reached at the use start time, and the start time calculating unit is a target for determining the start time of the plurality of air conditioners. An air conditioner other than the target air conditioner obtains a degree of influence on the indoor temperature change rate of the target air conditioner, and corrects the indoor temperature change rate of the target air conditioner.

  The present invention corrects the indoor temperature change rate by calculating the degree of influence of the air conditioner other than the target air conditioner on the indoor temperature change rate of the target air conditioner, and starts the air conditioner based on the indoor temperature change rate and the indoor temperature. Since the time is obtained, even when multiple air conditioners are installed in one space, the time from the calculated start time to the set time and the time from the actual start of the air conditioner to the set temperature And the error can be reduced.

Embodiment 1 FIG.
1 is a block diagram showing a configuration of an air conditioning management apparatus according to Embodiment 1 of the present invention.
In FIG. 1, an air conditioning management apparatus 100 controls the operations of a plurality of air conditioners in an integrated manner. The air conditioning management device 100 also serves as a user interface for the user to operate the air conditioner.

The air conditioning management apparatus 100 is connected to a plurality of outdoor units 20 through dedicated communication lines or LANs. Signal exchange is possible between the air conditioning management device 100 and each outdoor unit 20.
Each outdoor unit 20 is connected to a plurality of indoor units 30 as air conditioners by a dedicated communication line or LAN. Signal exchange is possible between the air conditioning management device 100 and each indoor unit 30 via the outdoor unit 20.
The air conditioning management device 100 can transmit at least a signal for controlling the start and stop of the operation of each indoor unit 30 and each outdoor unit 20 to each indoor unit 30 and each outdoor unit 20.
In addition, each indoor unit 30 and each outdoor unit 20 can transmit its own operating state to the air conditioning management device 100.

Each indoor unit 30 that is an air conditioner is provided with a room temperature sensor 31 that detects the temperature of the intake air from the room where the indoor unit 30 is disposed (hereinafter referred to as “room temperature”).
Each indoor unit 30 can transmit at least information on the room temperature to the air conditioning management device 100.

The air conditioning management device 100 includes a startup time calculation unit 1, a data management unit 2, an air conditioner management unit 3, a communication management unit 4, and a LAN communication management unit 5.
The start time calculation unit 1, the air conditioner management unit 3, and the LAN communication management unit 5 can be realized by hardware such as a circuit device that realizes these functions, or are executed on an arithmetic device such as a microcomputer or a CPU. It can also be realized as software.
The data management unit 2 can be configured by a storage device such as an HDD (Hard Disk Drive) or a flash memory.
The communication management unit 4 can be configured by a network interface such as a LAN interface.

It should be noted that an interface (display, input key, etc.) may be provided as appropriate for inputting and outputting various setting information in accordance with user operations.
Further, a remote monitoring device (not shown) or the like may be connected by wire or wireless to input / output operation information from the user, operation information of each air conditioner, and the like.

The activation time calculation unit 1 calculates activation times of the indoor units 30 and the outdoor units 20 corresponding to the indoor units 30 based on schedule information set in advance. The calculation operation will be described later.
The activation time calculation unit 1 includes an indoor temperature change rate calculation unit 6, an indoor temperature change rate correction unit 7, a calculation processing unit 8, and a proximity device detection unit 9.

  The indoor temperature change rate calculation unit 6 calculates a change rate (° C./min) of indoor temperature per unit time due to operation of the indoor unit 30 (hereinafter referred to as “indoor temperature change rate”) for each indoor unit 30. It is.

  The indoor temperature change rate correction unit 7 corrects the indoor temperature change rate according to the degree of influence of the indoor unit 30 adjacent to the indoor unit 30 to be controlled.

The calculation processing unit 8 calculates a time at which the operation of the indoor unit 30 to be controlled is started (hereinafter referred to as “start-up time”).
The activation time is calculated from the indoor temperature change rate, the indoor temperature, the set temperature, the set time, the intake temperature of the adjacent indoor unit 30, and the like. Details will be described later.

  The proximity device detection unit 9 detects another indoor unit 30 that is close to the indoor unit 30 to be controlled. Moreover, the indoor unit 30 which has a large influence on the indoor unit 30 to be controlled is detected from the detected indoor units 30.

The data management unit 2 stores schedule information, past operation data of each air conditioner, and the like. The schedule information is preset by the user and includes at least a use start time (set time) and a set temperature.
The data management unit 2 includes an operation data storage unit 10 and a proximity device data storage unit 11.

  The operation data storage unit 10 includes operation history such as past operation data of the indoor unit 30 to be controlled, operation data on the day of the indoor unit 30 to be controlled, indoor temperature history such as past indoor temperature change rate, Schedule information (setting data), location information of each air conditioner, and the like are stored.

  The proximity device data storage unit 11 includes a detection result of the close indoor unit 30 detected by the close device detection unit 9, past operation data of the close indoor unit 30, operation data of the close indoor unit 30 on the day, and the like. The operation history is saved.

  The air conditioner management unit 3 manages the operation data of the outdoor unit 20 and the indoor unit 30 connected to the air conditioning management device 100 (for example, operation start, operation stop, air conditioning classification, wind speed, air volume, set temperature, etc.). is there. The air conditioner management unit 3 is connected to the communication management unit 4, the LAN communication management unit 5, the data management unit 2, and the activation time calculation unit 1, and transmits operation data information.

The communication management unit 4 performs information transmission with the air conditioning equipment (the outdoor unit 20, the indoor unit 30, etc.) connected to the air conditioning management device 100.
The communication management unit 4 transmits information from the air conditioner management unit 3 to the air conditioner connected to the air conditioning management device 100. Further, it receives information from the air conditioner etc. and transmits it to the air conditioner management unit 3.

  The LAN communication management unit 5 is for performing information transmission with a device such as a remote monitoring device (not shown) connected to the air conditioning management device 100 via a LAN (Local Area Network).

  Next, the operation of the air conditioning management device 100 according to the first embodiment will be described.

  The air conditioning management device 100 sets each indoor unit 30 and the outdoor unit 20 so that the room in which the indoor unit 30 is set becomes the set temperature set by the user at a preset set time (use start time). And so on.

As the set time, for example, “use starts every day at 8:30 am” is set. The set time is not limited to this, and may be set a plurality of times per day.
Further, as the set temperature, an arbitrary temperature is set by an operation from the user.
In the following description, such setting information (schedule information) will be described as being stored in advance in the operation data storage unit 10.

In the following description, the operation for calculating the start time is referred to as “current operation”. In addition, the operation before the current operation is referred to as “previous operation”. The operation after the current operation is called “next operation”.
That is, in the case of a schedule for driving at a predetermined time every day, the current driving is the driving of the current day, the previous driving is the driving of the previous day, and the next driving is the driving of the next day.

First, an outline of the operation will be described.
The air conditioning management device 100 is a unit time by operation of an air conditioner to be controlled, that is, an indoor unit 30 (hereinafter referred to as “target indoor unit 30a”) that starts operation by obtaining a start time before the current operation. The rate of change in the perceived room temperature (hereinafter referred to as “reference room temperature change rate α base ”) is obtained.
Next, the activation time of the target indoor unit 30a in the current operation is calculated using the reference indoor temperature change rate α base . Further, the reference indoor temperature change rate α base is corrected based on the actual operation data of the current operation.
Then, when calculating the start time during the next operation, the start time is calculated using the corrected reference indoor temperature change rate α base .

Next, the detail of operation | movement of such an air-conditioning management apparatus 100 is demonstrated using FIGS.
In addition, in the following description, although the operation | movement in the case of controlling one indoor unit 30 is demonstrated, when operating the some indoor unit 30, the same operation | movement is performed about each indoor unit 30. FIG.

  FIG. 2 is a flowchart showing the operation of the air-conditioning management apparatus according to Embodiment 1 of the present invention. Hereinafter, each step of FIG. 2 will be described.

(S1) Calculation operation of reference indoor temperature change rate α base First, the indoor temperature change rate calculation unit 6 of the activation time calculation unit 1 performs the reference indoor temperature change rate of the target indoor unit 30a when the target indoor unit 30a is activated for the first time. α base is calculated.
Then, the indoor temperature change rate calculation unit 6 stores the calculated reference indoor temperature change rate α base in the operation data storage unit 10 of the data management unit 2.

The reference indoor temperature change rate α base is a value for considering the capacity of the air conditioner (the indoor unit 30 and the outdoor unit 20 and the like) and the installation environment of the target indoor unit 30a, and after the start of the operation of the target indoor unit 30a. Is expressed by the following formula (1).

Reference room temperature change rate α base = temperature difference ΔT 0 (° C.) / Stable time (min) (1)

Here, the stabilization time is a time until the room temperature reaches the set temperature or a time until the room temperature reaches the temperature when there is no temperature change for a predetermined time (for example, 5 minutes). Further, the temperature difference ΔT 0 is a temperature change amount of the room temperature during the stable time.

FIG. 3 is a diagram for explaining the reference indoor temperature change rate according to Embodiment 1 of the present invention.
For example, as shown in FIG. 3A, when the room temperature reaches the set temperature due to the operation of the target indoor unit 30a, the stabilization time is the time from the start of operation to the set temperature, and the temperature difference ΔT 0. Is the difference between the room temperature at the start of operation and the set temperature.
Further, as shown in FIG. 3B, when the room temperature does not reach the set temperature due to the operation of the target indoor unit 30a, the stabilization time is the time from the start of operation until the room temperature reaches a stable temperature, The temperature difference ΔT 0 is the difference between the room temperature at the start of operation and the stable temperature.

Although the case where the predetermined time is 5 minutes will be described here, this 5 minutes is a value obtained by calculating an approximate time until there is no temperature change based on actually measured data.
The predetermined time may be variable instead of fixed, and may be arbitrarily set by a user operation, for example. Moreover, you may enable it to set for every indoor unit 30. FIG.

Here, the case where the reference indoor temperature change rate α base is calculated at the time of the first activation will be described, but the present invention is not limited to this, and is performed at an arbitrary timing as long as it is before the activation operation of the activation time described later. You may do it. For example, it may be performed by an operation from the user. For example, the calculation operation of the reference indoor temperature change rate α base may be performed when the layout of the room where the indoor unit 30 is installed is changed or when a heat source is arranged.

The indoor temperature change rate calculation unit 6 may obtain a plurality of reference indoor temperature change rates α base in accordance with the operation mode of the indoor unit 30 (cooling, heating, air blowing, etc.).

(S2) Startup Time Calculation Operation FIG. 4 is a diagram for explaining the startup time calculation operation according to Embodiment 1 of the present invention.
As shown in FIG. 4, the calculation processing unit 8 of the activation time calculation unit 1 starts a calculation operation of the activation time (operation start time) of the target indoor unit 30a a predetermined time before the set time (for example, 30 minutes before). To do. Hereinafter, the time at which this calculation operation starts is referred to as “calculation time t on ”.
First, the calculation processing unit 8 calculates a temperature difference ΔT between the room temperature and the set temperature at the calculation time t on .
Then, the calculation processing unit 8 uses the reference indoor temperature change rate α base stored in the operation data storage unit 10 to calculate the predicted stabilization time Δtime according to the following equation (2).

Δtime = ΔT / α base (2)

That is, the predicted stabilization time Δtime is the time required to reach the set temperature from the room temperature at the calculation time t on .
Therefore, the activation time for starting the operation of the target indoor unit 30a is obtained by the following equation (3).

  Startup time = set time−Δtime (3)

(S3) Operation of air conditioner The air conditioner management unit 3 starts the operation of the target indoor unit 30a at the activation time calculated by the above equation (3).
At this time, the room temperature sensor 31 sequentially detects the room temperature and detects the time when the set temperature is reached.

  In addition, the air conditioner management unit 3 causes the operation data storage unit 10 to store the time from the start time during the operation to the set temperature, that is, the actual value of the stable time, as operation data for the current operation.

Here, when operating a plurality of indoor units 30 arranged in the same room, the indoor temperature at which the target indoor unit 30 a is air-conditioned is affected by the other indoor units 30. For this reason, the actual value of the indoor temperature change rate in actual operation (hereinafter referred to as “indoor temperature change rate actual α act ”) changes due to the influence of the other indoor units 30, and the actual value of the stable time and the predicted stable time An error occurs in Δtime.
For example, as shown by the solid line in FIG. 4, there are cases where the room temperature reaches the set temperature before the set time, and cases where the room temperature reaches the set temperature after the set time (not shown).
Next, the correction process of the reference indoor temperature change rate α base in consideration of the influence of the other indoor unit 30 will be described.

(S4) Correction processing of reference indoor temperature change rate α base The indoor temperature change rate correction unit 7 of the activation time calculation unit 1 includes a proximity indoor unit (described later) detected by the proximity device detection unit 9 and an operation data storage unit 10. The reference indoor temperature change rate α base is corrected on the basis of the operation data stored in.
Details of the correction processing operation of the reference indoor temperature change rate α base will be described in detail with reference to FIG.

  FIG. 5 is a flowchart showing a correction process for the reference indoor temperature change rate according to the first embodiment of the present invention. Hereinafter, each step of FIG. 5 will be described.

(S41)
First, the indoor temperature change rate calculation unit 6 of the activation time calculation unit 1 detects the actual value of the stable time from the operation data of the current operation stored in the operation data storage unit 10.

(S42)
The indoor temperature change rate calculation unit 6 calculates the indoor temperature change rate result α act by the following equation (4). Then, the indoor temperature change rate calculation unit 6 stores the calculated indoor temperature change rate result α act in the operation data storage unit 10.

Indoor temperature change rate result α act = temperature difference ΔT (° C.) at calculation time t on / actual stabilization time (min) (4)

(S43)
Next, the indoor temperature change rate correction unit 7 of the activation time calculation unit 1 determines whether or not the difference between the predicted stable time Δtime of the current operation and the actual value of the stable time is greater than a predetermined time t gap. .

This predetermined time t gap is, for example, 5 minutes. Note that 5 minutes is a value that is a few minutes longer than the average difference between the calculated start time and the actual stable time, based on measured data, and is rarely exceeded when there is no change in the surrounding environment. Is a value that can be determined to require correction of the value of the indoor temperature change rate that is used.
Note that t gap may be set to a different value for each indoor unit 30, or may be variable.

If the room temperature change rate correction unit 7 determines that the difference between the predicted stable time Δtime of the current operation and the actual value of the stable time is not greater than t gap , the indoor temperature change rate correction unit 7 ends the correction processing operation and performs step S5 (FIG. 2). )

On the other hand, when it is determined that the difference between the predicted stable time Δtime of the current operation and the actual value of the stable time is larger than t gap , another indoor unit 30 (hereinafter referred to as “close proximity room” disposed around the target indoor unit 30a). The reference indoor temperature change rate α base is corrected in consideration of the influence of the machine 30b ”.

(S44)
The proximity device detection unit 9 measures the distance from the target indoor unit 30a to another indoor unit 30 from the coordinate data of the indoor unit 30 stored in the operation data storage unit 10, and a plurality of units close to the target indoor unit 30a. The indoor unit 30 is detected as the close indoor unit 30b.

FIG. 6 is a diagram showing a proximity indoor unit detection method according to Embodiment 1 of the present invention.
In the example of FIG. 6A, the indoor units 30b-2 to 30b-5 that are close to the target indoor unit 30a-1 are detected as the close indoor units 30b.

In the example of FIG. 6, four units are selected as the proximity indoor units 30b. However, depending on the installation environment, the number may not be four units, but may be variable.
In the example of FIG. 6, the determination is made based only on the distance. However, when it is installed in a private room isolated from other places, it may not be selected even when the distance is short.

In the above description, the case where the coordinate data is stored in advance in the operation data storage unit 10 has been described. However, the present invention is not limited to this, and the coordinate data of each indoor unit 30 is input without storing the coordinate data. Alternatively, information on the influential indoor unit 30 may be input.
In addition, the air conditioning management apparatus 100 performs management by assigning some identification number to identify each indoor unit 30. For this reason, you may make it recognize the indoor unit near the identification number of the target indoor unit 30a as the proximity indoor unit 30b. For example, when the indoor units 30 with numbers 1 to 10 are installed, the adjacent indoor units of the indoor unit with number 5 are number 3, number 4, number 6, and number 7.

(S45)
Next, the proximity device detection unit 9 has the indoor unit 30 (hereinafter referred to as “representative proximity indoor unit”) having the greatest influence on the indoor temperature change rate of the target indoor unit 30a among the detected proximity indoor units 30b. Select).
Hereinafter, the selection operation of the representative proximity indoor unit will be described separately for the cooling operation and the heating operation.

<Cooling operation>
When the cooling operation is performed, the representative proximity indoor unit having a large influence is selected on the basis of the following condition when the stability is reached by t gap or more before the set time.
The conditional expression T ne is, for example, 2 ° C. Note that the conditional expression T ne may be variable or manually settable.

(A) [Indoor temperature of target indoor unit 30a] -Tne <[Indoor temperature of adjacent indoor unit 30b] at the time of starting the previous operation,
(B) Among the adjacent indoor units 30b satisfying the condition [the indoor temperature of the target indoor unit 30a] −T ne > [the indoor temperature of the adjacent indoor unit 30b] at the start time of the current operation, the temperature difference of (b) is The largest one is the representative close indoor unit.

  For example, in the example of FIG. 6B, the adjacent indoor unit 30b-3 (temperature) having the largest temperature difference of the above (b) among the adjacent indoor units 30b-1 to 30b-4 satisfying the relational expression (a). Difference 5 ° C) is selected as the representative proximity indoor unit.

In the cooling operation, when the stability is reached with a delay of t gap or more than the set time, the close proximity indoor unit 30b having a large influence is selected based on the following conditions.
(C) [Indoor temperature of target indoor unit 30a] -Tne > [Indoor temperature of adjacent indoor unit 30b] at the start time of the previous operation;
(D) Among the adjacent indoor units 30b that satisfy the condition of [the indoor temperature of the target indoor unit 30a] −T ne <[the indoor temperature of the adjacent indoor unit 30b] at the start time of the current operation, the temperature difference of (d) is The largest one is the representative close indoor unit.

<Heating operation>
In the heating operation, when the stability reaches ahead of the set time by t gap or more, the close proximity indoor unit 30b having a large influence is selected based on the following conditions.
The conditional expression T ne is, for example, 2 ° C. Note that the conditional expression T ne may be variable or manually settable.

(E) [the indoor temperature of the target indoor unit 30a] + T ne > [the indoor temperature of the adjacent indoor unit 30b] at the start time of the previous operation;
(F) The temperature difference of (f) is the largest among the adjacent indoor units 30b that satisfy the condition [the indoor temperature of the target indoor unit 30a] + T ne <[the indoor temperature of the adjacent indoor unit 30b] at the start time of the current operation. The thing shall be the representative close indoor unit.

In the heating operation, when the stability is reached with a delay of t gap or more than the set time, the close proximity indoor unit 30b having a large influence is selected based on the following conditions.

(G) [the indoor temperature of the target indoor unit 30a] + T ne <[the indoor temperature of the adjacent indoor unit 30b] at the start time of the previous operation;
(H) The temperature difference of (h) is the largest among the adjacent indoor units 30b that satisfy the condition of [the indoor temperature of the target indoor unit 30a] + T ne > [the indoor temperature of the adjacent indoor unit 30b] at the start time of the current operation. The thing shall be the representative close indoor unit.

  As described above, the proximity device detection unit 9 represents the indoor unit 30 in which the temperature difference during the previous operation is within a predetermined range and the temperature difference during the current operation is the largest among the detected proximity indoor units 30b. Select as a close indoor unit.

Regardless of cooling or heating, instead of selecting a representative proximity indoor unit, an average of the detected effects of the proximity indoor unit 30b may be used. That is, for each of the detected proximity indoor units 30b, a correction coefficient to be described later may be obtained, and the average value of the correction coefficients may be used to correct the indoor temperature change rate of the target indoor unit 30a.
The startup time may be calculated by weighting the detected proximity indoor units 30b in descending order of influence.

Note that t gap may be variable, may be set for each indoor unit 30, or may be set manually. Also, T ne and t gap may be different during cooling and heating.

(S46)
Next, the indoor temperature change rate correction unit 7 determines whether or not a representative proximity indoor unit has been selected in step S45.

(S47)
If all the conditions in step S45 are not met and the representative close indoor unit is not detected, the room temperature change rate correction unit 7 uses the room temperature change rate result α act calculated in step S42 as a new reference indoor temperature change. The operation data storage unit 10 stores the rate α base .

(S48)
On the other hand, when the representative close indoor unit is detected in step S45, the indoor temperature change rate correction unit 7 uses the operation data of the representative close indoor unit to correct the reference indoor temperature change rate α base. A correction coefficient β is obtained.

  The correction coefficient β is expressed by the following equation (5).

β = (previous operation of α act - α act of the current operation) / (T out of the previous operation - T out of the current operation) ... (5)

Here, the temperature difference Tout is [the indoor temperature of the close indoor unit 30b] − [the indoor temperature of the target indoor unit 30a] at the calculation time t on .

That is, the correction coefficient β is the ratio of the amount of change in the actual temperature change rate α act between the previous operation and the current operation to the change amount of the temperature difference T out between the previous operation and the current operation. .

In addition, when the information of the indoor temperature change rate result α act of the previous operation is not stored, the reference indoor temperature change rate α base at the first activation is set as the indoor temperature change rate result α act of the previous operation.

(S49)
The indoor temperature change rate correction unit 7 corrects the reference indoor temperature change rate α base by the following equation (6) using the calculated correction coefficient β.

Α base after correction = α act −β of current operation × T out of current operation (6)

When the correction coefficient β is less than 0, the correction coefficient β is not updated and α base is not changed. Further, when using the correction coefficient β, it may be calculated by using the past indoor temperature change rate result α act instead of the previous operation.

Therefore, the reference indoor temperature change rate α base for the next operation is expressed by the following equation (7).

Α base = T out × of this time corrected α base + next time operation during the operation of the next operation β ... (7)

Therefore, as shown in FIG. 7, the reference indoor temperature change rate α base for obtaining the next activation time is obtained by adding the influence of the adjacent indoor unit 30b to the reference indoor temperature change rate α base during the current operation. It becomes.

  The correction process ends here.

(S5) Completion of Air Conditioner Operation In FIG. 2 again, the air conditioner management unit 3 causes the indoor unit 30 during operation when the operation stop time set in advance by the user or the like has elapsed, or by an operation from the user or the like. And the operation of the outdoor unit 20 or the like is stopped.
Then, the activation time calculation unit 1 stands by until the next operation calculation time t on based on the schedule setting.

(S6) Calculation of start-up time in consideration of adjacent indoor unit The calculation processing unit 8 of the start-up time calculating unit 1 calculates the start-up time in consideration of the influence of the close-up indoor unit 30b at the calculation time t on of the next operation.
The calculation processing unit 8 calculates a temperature difference ΔT between the room temperature and the set temperature at the calculation time t on of the next operation.
The calculation processing unit 8 obtains the activation time using the reference indoor temperature change rate α base corrected or updated in the correction process (S4).

  First, the predicted stabilization time Δtime considering the influence of the close indoor unit 30b is calculated by the following equation (8) from the above equations (2) and (7).

Δtime = ΔT / (corrected α base + (T out at the next operation) × β) (8)

  Next, the activation time in consideration of the influence of the close indoor unit 30b is obtained by the following equation (9).

  Startup time = set time−Δtime (9)

  After calculating the activation time in consideration of the close indoor unit 30b, the process returns to step S3. Thereafter, steps S3 to S6 are repeated.

Regardless of the cooling operation or the heating operation, the calculation processing unit 8 determines that when the calculated activation time is a time before the calculation time t on , the calculation time t is calculated from the set time when obtaining the next activation time. the time to on may be increased.
For example, the calculated activation time, if delayed t on + t-over-(min) or more, the t on the target indoor units 30a delayed, increasing t pl. The t over and t pl can be set by the user.

FIG. 8 is a diagram showing a comparison result between the actual value and the calculated value of the stable time according to Embodiment 1 of the present invention.
FIG. 8 shows a stable time when a scheduled operation is performed with the set time (use start time) as a predetermined time every day.
Further, the “stable time record” indicates the time from when the target indoor unit 30a is activated until the set temperature is actually reached. As “prediction (correction)”, the time from the start time calculated by the operation in the first embodiment to the set time is shown. Furthermore, as “prediction (average of three times)”, the time from the start time calculated using the average value of the indoor temperature change rate for the past three days to the set time is shown.
As shown in FIG. 8, the improvement effect that the sum of the absolute values of the differences between the actual stable time and the prediction (correction) was halved compared to the prediction (average of three times) was obtained.

In an embedded device such as the air conditioning management device 100, a CPU having a small capacity is often used to reduce the cost, and in most cases, a CPU having a frequency of 133 MHz or less is used. Also, many storage devices used as the data management unit 2 have a small capacity and cannot store a large amount of data.
Although the operation according to the first embodiment needs to be performed when the initial values of the variables are introduced, the calculation for each day can calculate the start time by only a few comparisons and simple four arithmetic operations. .
In the conventional technology (for example, Patent Documents 1 and 2), repeated calculations for several tens of days are performed in order to process a large amount of data, and the startup time with the same error as in the first embodiment is obtained. Then, the operation must be repeated several tens of times. Therefore, in the first embodiment, the amount of calculation is less than half that of the prior art.

  As described above, in the present embodiment, the following various excellent effects can be obtained.

  Since the activation time of the target indoor unit 30a is calculated in consideration of the influence of the adjacent indoor unit 30b, even when a plurality of indoor units 30 are installed in one space, the calculated activation time to the set time It is possible to reduce an error between the time and the time from when the target indoor unit 30a is actually activated until the set temperature is reached (stable time).

  By reducing the error between the calculated time from the start time to the set time and the time from the actual start of the target indoor unit 30a to the set temperature (stable time), it is possible to reduce waste of operation. And the driving efficiency can be improved. Therefore, energy consumption can be reduced.

The comfort of the indoor environment is improved by reducing the error between the calculated time from the start time to the set time and the time from when the target indoor unit 30a is actually started to reach the set temperature (stable time). be able to.
Further, since the room temperature set by the user can be set at the use start time of the building such as a building, an environment in which the user of the building feels comfortable can be realized. Therefore, the user's work efficiency can be improved.

  Further, the error between the calculated time from the start time to the set time and the time from when the target indoor unit 30a is actually started to reach the set temperature (stable time) can be reduced. Therefore, it is not necessary to correct the set time, and the user's trouble can be saved.

Since the calculation of the activation time is realized by a simple calculation process using only four arithmetic operations, the activation time can be calculated by an easy calculation.
For this reason, even when a processing unit (CPU) having a low processing capability is used, the calculation of the activation time can be processed relatively quickly. Therefore, it becomes possible to introduce the apparatus using a CPU having a low processing capacity used in the general air conditioning management apparatus 100.

  Further, since a CPU with low processing capability can be used, an inexpensive air conditioning management device 100 can be obtained.

Embodiment 2. FIG.
In the second embodiment, in addition to the operation of the first embodiment, the startup time is calculated in consideration of the fluctuation of the room temperature from the calculation time t on to the startup time.
The configuration of air conditioning management device 100 in the second embodiment is the same as that in the first embodiment. In addition, the same code | symbol is attached | subjected to the structure same as Embodiment 1. FIG.

  Hereinafter, the operation in the second embodiment will be described focusing on the differences from the first embodiment.

FIG. 9 is a diagram for explaining the calculation operation of the activation time according to the second embodiment of the present invention.
As shown in FIG. 9, the room temperature may fluctuate between the calculation time t on and the activation time. Therefore, the calculation processing unit 8 obtains the actual value of the rate of change in room temperature per unit time (hereinafter referred to as “temperature increase rate γ”) from the calculation time t on to the activation time, and the target indoor unit When obtaining the next activation time of 30a, the activation value of the target indoor unit 30a that becomes the set temperature at the use start time is obtained using the actual value of the temperature increase rate γ.

In the example of FIG. 9, the case where the temperature rises between the calculation time t on and the activation time is shown, but the present invention is not limited to this, and the temperature falls (temperature rise rate γ is negative). It may be.

Next, details of the operation of the air conditioning management apparatus 100 will be described with reference to FIG.
In FIG. 10, the same step numbers are assigned to the same operations as those in the first embodiment (FIG. 2).

  FIG. 10 is a flowchart showing the operation of the air-conditioning management apparatus according to Embodiment 2 of the present invention. Hereinafter, each step of FIG. 10 will be described.

(S1-S2)
As in the first embodiment, the reference indoor temperature change rate α base is calculated at the first activation, and the activation time is calculated.

(S21)
Next, the calculation processing unit 8 obtains the temperature increase rate γ (° C./min).
This temperature increase rate γ represents the rate of change in room temperature per unit time from the calculation time t on to the activation time, and is defined by the following equation (10).

Temperature increase rate γ = change temperature ΔT up (° C.) / (T on −Δtime) (min) (10)

Here, the change temperature ΔT up is the amount of change in the room temperature between the calculation time t on and the activation time.

(S3-S5)
As in the first embodiment, the operation of the target indoor unit 30a is started, the reference indoor temperature change rate α base is corrected, and the operation of the target indoor unit 30a is ended.

(S22)
Next, the calculation processing unit 8 calculates the activation time in consideration of the temperature change and the influence of the close indoor unit 30b at the calculation time t on of the next operation.
The calculation processing unit 8 calculates a temperature difference ΔT between the room temperature and the set temperature at the calculation time t on of the next operation.
The calculation processing unit 8 obtains the activation time using the reference indoor temperature change rate α base and the temperature increase rate γ corrected or updated in the correction process (S4).

Here, the change temperature ΔT up that changes between the calculation time t on and the activation time is obtained from the above equation (10) by the following equation (11).

Change temperature ΔT up = (t on −Δtime) × γ (11)

  Therefore, the predicted stabilization time Δtime considering the temperature change is obtained by the following equation (12) from the above equations (2) and (11).

Δtime = (ΔT + ΔT up ) / α base
= (ΔT + t on × γ ) / (α base + γ) ... (12)

  Therefore, the activation time in consideration of the temperature change and the influence of the adjacent indoor unit 30b is obtained by the following equation (13) from the above equations (8) and (12).

Δtime = (ΔT + t on × γ) / (( after correction of α base + (T out) × β + γ at the time of the next operation) ... (13)

  Next, similarly to the first embodiment, the calculation processing unit 8 uses the calculated predicted stabilization time Δtime to calculate the activation time according to the above equation (9).

  And after starting time is calculated, it returns to said step S21 and repeats operation | movement after step S21.

As described above, in the present embodiment, when the actual value of the temperature increase rate γ is obtained and the next activation time of the target indoor unit 30a is obtained, the actual value of the temperature increase rate γ is used to set the set time. The activation time of the target indoor unit 30a that becomes the temperature is obtained.
For this reason, even when the room temperature changes from the calculated time t on to the start time, the time from the calculated start time to the set time, and until the target indoor unit 30a is actually started and reaches the set temperature. The error from the time (stable time) can be further reduced.

In the second embodiment, the activation time is determined in consideration of the temperature change of the indoor temperature and the influence of the adjacent indoor unit 30b. However, the present invention is not limited to this, and the influence of the adjacent indoor unit 30b is taken into consideration. It is good also as operation | movement which does not perform the correction | amendment process of reference | standard indoor temperature change rate (alpha) base which performed.
By such an operation, even when there is no close indoor unit 30b such as a private room, it is possible to calculate a predicted stable time with little error, and it is possible to realize an energy efficient operation and a comfortable indoor environment.

In the first and second embodiments, the value used for calculating the activation time is the room temperature, which is a value for considering the indoor environment of the current operation, and the activation time from the calculation time t on. In order to consider the temperature increase rate γ for predicting the temperature change up to the past, the past change temperature ΔT up used for calculating this, the past reference indoor temperature change rate α base , and the operation status of the adjacent indoor unit 30b. In order to consider the ambient room temperature of the adjacent indoor unit 30b and the influence received from the surroundings, the activation time was calculated using the temperature difference Tout between the ambient room temperature and the room temperature.
Since these used values showed a high value of about 0.3 to 0.6 even when the correlation coefficient was calculated from the actual measurement data, it can be said that the influence on the temperature change is high.
Therefore, by calculating the start time using these values, it is possible to calculate the predicted stable time with less error by simple calculation.

  In addition, other values such as the outside temperature are not considered because the correlation coefficient is about 0.20 less than the actual measurement data, but other values such as the outside temperature are appropriately added to the above calculation formula, It may be modified to obtain the activation time. It goes without saying that the present invention includes these various modifications.

It is a block diagram which shows the structure of the air-conditioning management apparatus which concerns on Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the air-conditioning management apparatus which concerns on Embodiment 1 of this invention. It is a figure explaining the reference | standard indoor temperature change rate which concerns on Embodiment 1 of this invention. It is a figure explaining the calculation operation | movement of the starting time which concerns on Embodiment 1 of this invention. It is a flowchart which shows the correction process of the reference | standard indoor temperature change rate which concerns on Embodiment 1 of this invention. It is a figure which shows the detection method of the proximity indoor unit which concerns on Embodiment 1 of this invention. It is a figure explaining the correction | amendment of the reference temperature change rate which concerns on Embodiment 1 of this invention. It is a figure which shows the comparison result of the performance value and calculation value of the stable time which concern on Embodiment 1 of this invention. It is a figure explaining the calculation operation | movement of the starting time which concerns on Embodiment 2 of this invention. It is a flowchart which shows operation | movement of the air-conditioning management apparatus which concerns on Embodiment 2 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Start time calculation part, 2 Data management part, 3 Air conditioner management part, 4 Communication management part, 5 LAN communication management part, 6 Indoor temperature change rate calculation part, 7 Indoor temperature change rate correction part, 8 Calculation processing part, 9 Proximity device detection unit, 10 operation data storage unit, 11 proximity device data storage unit, 20 outdoor unit, 30 indoor unit, 30a target indoor unit, 30b proximity indoor unit, 31 room temperature sensor, 100 air conditioning management device.

Claims (8)

  1. An air conditioning management device that controls the operation of a plurality of air conditioners,
    An air conditioner management unit for acquiring information on the indoor temperature detected for each air conditioner;
    A data management unit for storing at least the indoor temperature change rate, which is the change rate of the indoor temperature per unit time due to the operation of the air conditioner, and information on the set temperature and use start time;
    An activation time calculation unit that obtains the activation time of the air conditioner so as to be the set temperature at the use start time based on at least the indoor temperature change rate and the indoor temperature;
    The activation time calculation unit
    Of the plurality of air conditioners, an air conditioner other than the target air conditioner whose start time is to be obtained is determined to determine the degree of influence on the indoor temperature change rate of the target air conditioner, and the indoor temperature change rate of the target air conditioner The air-conditioning management apparatus characterized by correcting.
  2. The activation time calculation unit
    An indoor temperature change rate calculation unit for obtaining a track record of the indoor temperature change rate of the target air conditioner based on the operation results of the target air conditioner;
    Among the air conditioners other than the target air conditioner, a proximity device detection unit that selects, as a representative proximity air conditioner, an air conditioner having the greatest influence on the indoor temperature change rate of the target air conditioner;
    An indoor temperature change rate that corrects the indoor temperature change rate of the target air conditioner based on the temperature difference between the target air conditioner and the representative proximity air conditioner and the actual value of the indoor temperature change rate of the target air conditioner. A correction unit;
    The air conditioning management device according to claim 1, further comprising: a calculation processing unit that obtains a next activation time of the target air conditioner using the corrected rate of change in indoor temperature.
  3. The proximity device detection unit,
    Each time the target air conditioner is activated, the temperature difference between the room temperature of the target air conditioner and the room temperature of an air conditioner other than the target air conditioner is determined,
    Among the air conditioners other than the target air conditioner, an air conditioner in which the temperature difference at the previous operation is within a predetermined range and the temperature difference at the current operation is the largest is selected as the representative proximity air conditioner. The air-conditioning management apparatus according to claim 2.
  4. The indoor temperature change rate calculation unit
    Every time the target air conditioner is activated, the actual value of the indoor temperature change rate of the target air conditioner is obtained,
    The indoor temperature change rate correction unit
    Each time the target air conditioner is activated, the temperature difference between the room temperature of the target air conditioner and the room temperature of the representative proximity air conditioner is determined,
    The ratio of the change amount of the actual value of the indoor temperature change rate between the past operation and the current operation to the change amount of the temperature difference between the past operation and the current operation is obtained as a correction coefficient.
    The room temperature change rate of the target air conditioner is corrected based on a temperature difference between the target air conditioner and the representative proximity air conditioner at the time of determining the next activation time, and the correction coefficient. 2. The air conditioning management apparatus according to 2 or 3.
  5. The indoor temperature change rate correction unit
    The room temperature change rate of the target air conditioner is corrected when the difference between the time when the room temperature of the target air conditioner reaches the set temperature and the use start time is a predetermined time or more. Item 5. The air conditioning management device according to any one of Items 2 to 4.
  6. The calculation processing unit
    Obtain the actual value of the rate of temperature rise, which is the rate of change of the room temperature per unit time, from the time for obtaining the activation time to the activation time,
    When determining the next activation time of the target air conditioner, based on the actual value of the temperature increase rate, the indoor temperature of the target air conditioner, and the corrected indoor temperature change rate, the set temperature at the start time of use. The air conditioning management device according to claim 2, wherein a startup time of the target air conditioner is determined.
  7. The indoor temperature change rate calculation unit
    The air conditioning management device according to any one of claims 2 to 6, wherein a plurality of the indoor temperature change rates are obtained according to an operation mode of the air conditioner.
  8. The calculation processing unit
    Obtain a start time of the target air conditioner at a calculation time a predetermined time before the use start time,
    The air conditioning management device according to any one of claims 2 to 7, wherein when the activation time is a time before the calculation time, the predetermined time is increased when the next activation time is obtained.
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CN110701737A (en) * 2019-10-16 2020-01-17 珠海格力电器股份有限公司 Air conditioner temperature compensation setting method, computer device and computer readable storage medium

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