JP2556920B2 - Air conditioner - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an air conditioner, and more particularly to an air conditioner having a temperature setting function and having a function of maintaining an indoor temperature at this set temperature.

[Prior Art] An air conditioner having a cooling function and / or a heating function in order to maintain an appropriate temperature in a room is widely and generally used in household and / or industrial applications.

Such an air conditioner automatically controls the indoor temperature so as to reach the set target temperature. This target temperature is
It is set to an appropriate value by the user or fixedly set to a constant value in advance in the air conditioner.

During operation of the air conditioner, the room temperature is monitored by the temperature detector, and the air conditioner adjusts the room temperature so that the detected room temperature and the set target temperature match.

[Problems to be Solved by the Invention] An air conditioner in which a target temperature is automatically set, that is, when the automatic operation mode is set, the indoor temperature is adjusted so that the control temperature is fixedly set to a fixed value in advance. In such an air conditioner, the target temperature is a constant value regardless of the past temperature. Now, assuming that the automatically set target temperature is 23 ° C., in October and November, a person feels chilly just after experiencing hot summer.

Conversely, March feels very warm, just after experiencing a cold winter, and this temperature feels very warm. That is, the automatically set target temperature of 23 ° C cannot be said to be an appropriate temperature according to the season. In particular, setting the room temperature to 23 ° C in March is a waste of electric energy,
It is not preferable from the viewpoint of energy saving.

In addition, even if it is the same season, if the temperature a few days ago and today's temperature differ greatly, such a fixed constant target temperature value is significantly different from the sensible temperature, so it is optimal. It cannot be said that the target temperature is to keep the room at a proper temperature.

In addition, even in the air conditioner where the user sets the target temperature, the target temperature is set with a rough estimate, and if the indoor temperature feels that it is not appropriate according to the operating condition of the air conditioner, the target temperature value is set. I am adjusting. Therefore, in order to always maintain the indoor temperature at a temperature that is felt to be optimal, the user needs to make delicate adjustments, and there is a problem that the adjustment work is troublesome. In particular, when the climate changes suddenly, such as when the season changes, the set target temperature and the sensible temperature greatly differ, so that the above-described adjustment needs to be performed frequently, and this adjustment becomes troublesome.

That is, in the configuration of the conventional air conditioner, the indoor temperature is maintained so as to reach the target temperature, but the seasonal and environment adaptive control for adjusting the target temperature value in response to changes in the season and the environment is performed. There was a problem that I could not do it.

[Means for Solving the Problem] An air conditioner according to the present invention is an air conditioner having a function of adjusting a room temperature with a preset temperature set as a target value, the temperature detecting means, and Receiving the temperature information from the temperature detecting means, calculating the average value of the temperature of one day, storing the calculation result, and comparing the stored average value of the past day with a predetermined relatively long period and relatively. A storage unit that calculates an average value in a short-term time range and stores each calculation result, and a predetermined calculation process is performed on the average value information stored in the storage unit to correct the set temperature. A correction information generating means for generating correction information; and a temperature correction means for correcting the set temperature of the day in response to the correction information from the correction information generating means,
The correction information generating means generates correction information for increasing the set temperature when the average temperature for the relatively long period is higher than the average temperature for the day, and the average temperature for the relatively long period is for the day. When the average temperature is lower than the average temperature, the correction information for lowering the set temperature is generated, and when the average temperature for the day is lower than the average temperature for the relatively short period, the correction information for increasing the set temperature is generated. However, when the average temperature of the day is higher than the average temperature of the relatively short period, the correction information for lowering the set temperature is generated.

[Operation] The storage unit stores the average of the air temperatures for a relatively long period and a relatively short period. The correction information generating means adjusts the target temperature set according to the stored average temperature information. At this time, the contents of the predetermined arithmetic processing applied to the average value information are as follows. For example, when the temperature is high several months ago, a signal for controlling the set target temperature to be higher is generated. Therefore, in this case, in October and November, etc., using the example of the prior art described above, if the set target temperature is 23 ° C., it is slightly higher than that.
The temperature is set to about 0 ° C, which makes it possible to maintain the room temperature that does not feel chilly in October and November.

On the other hand, if the temperature was low a few months ago, and if information is generated to control the set target temperature to be lower, the set target temperature will be 21 ° C, which is slightly lower than 23 ° C. However, the temperature will be sufficiently warm.

Also, when the temperature suddenly drops compared to a few days ago, it feels particularly cold.In such a case, if the temperature several days ago is high, the set target temperature is corrected to be higher. If the control signal is generated, the room temperature suitable for the sensible temperature can be realized.

With the configuration described above, it is possible to realize the indoor temperature corresponding to the season and the environment.

[Embodiment of the Invention] FIG. 1 is a diagram schematically showing a configuration of a target temperature correction information generating unit in an air conditioner which is an embodiment of the present invention. In FIG. 1, the correction information generating unit calculates a temperature average value in a plurality of types of time ranges and stores the average value storage circuit 1, and the average temperature information from the average value storage circuit 1 is subjected to fuzzy calculation to perform temperature correction information. And a set temperature holding unit 3 for correcting the set target temperature according to the correction information from the fuzzy calculation unit 2 and outputting the corrected temperature as an actual target temperature.

The storage circuit 1 includes a first storage circuit 11 that holds the average temperature information of a few days ago and a second storage circuit 11 that stores the average temperature of a month ago.
Storage circuit 12 and a third storage circuit 13 that stores the average temperature of the day. As will be described later with reference to FIG. 3, there is provided another memory circuit for calculating and storing the daily and weekly average information for one day to 20 weeks before according to the temperature detector output. Based on the information from the circuits, each storage circuit 11 to 13 calculates and holds the respective average temperature.

The fuzzy calculator 2 performs a fuzzy calculation on the average temperature information of a few days ago, the average temperature information of a month ago and the today's temperature information from the first to third storage circuits to generate target temperature correction information. To do. The contents of calculation performed by the fuzzy calculation unit will be briefly described below with reference to FIG.

FIG. 2 is a diagram for explaining a method of fuzzy calculation which is generally performed. The fuzzy operation in FIG. 2 is shown as an example in the case of two rules, one input and one output.

Rule 1 shows a rule that "when the input variable X is X1, the output Y is Y1". Rule 2 is "input X is X2
In the case of, set the output Y to Y2. "
In this fuzzy rule, the part that describes the conditions for the rule to be satisfied is called the condition part, and the conclusion part is called the conclusion part. Generally, in the fuzzy inference method, a given input amount (input variable X) is converted into a value (membership value) in the range 0 to 1 for calculation. The membership function defines the conversion when converting the input variable X into a membership value. This membership function is defined for each proposition that the fuzzy rule handles. Next, the calculation method will be described.

First, given an input value x0, the case where this input value satisfies Rule 1 and Rule 2 is calculated. That is, the input value x0 is converted into the membership value α1 by the membership function M1, and the degree to satisfy the rule 1 is calculated. Similarly, the input value x0 is converted into the membership value α2 by the membership function M2, and the degree to which the input value x0 satisfies the rule 2 is calculated.

Subsequently, the membership functions M3 and M4 defined in the conclusion part are clipped by the membership values α1 and α2. That is, in FIG. 2, the shaded area is obtained in the conclusion part. When there are a plurality of input variables in this condition part, the membership value in the conclusion part is cut off by the minimum value of this membership value. Since there is one input variable in the configuration shown in FIG. 2, membership values α1 and α
The membership function M3'M4 ', which is obtained by cutting out the membership functions M3 and M4 in 2, gives the minimum value in each rule. The operation for obtaining this minimum value is called the min operation. Then, the result of the min operation for each rule 1 and rule 2 is combined. That is, the membership functions M3 ′ and M4 ′ cut off in the conclusion section are compared with each other for the same output value, and the membership value giving the maximum value is obtained,
A new final membership function is formed by plotting this maximum. The operation for finding this new membership function is called the max operation. Then, the output value y0 is obtained by calculating the center of gravity of this newly obtained membership function.

If the membership function is appropriately set by performing the arithmetic processing as described above, for example, “if A is large and B is normal, then reduce C”, “large”,
It becomes possible to process propositions including ambiguities of “ordinary” and “small”, and fine-grained control can be executed. In the present embodiment, the fuzzy calculation unit 2 "sets the set temperature higher when the temperature one month ago is high" and "sets the set temperature lower when the temperature one month ago is low". Yes, "If the current temperature is lower than the temperature two or three days ago, raise the set temperature", and "If the temperature is higher than the temperature two or three days ago, lower the set temperature." The fuzzy operation of four rules of "to make" is performed. This allows
The fuzzy calculation unit 2 outputs set temperature correction information that is a target temperature based on the average temperature one month ago, the average temperature two or three days ago, and the average temperature today. The set temperature holding unit 3
The set temperature, that is, the target temperature is corrected and held according to the correction information from the fuzzy calculator 2. The air conditioner adjusts the room temperature by using the set temperature corrected and held in the set temperature holding unit 3 as the target temperature.

In the above-described configuration, the set temperature information itself is directly derived from the fuzzy calculation unit 2, and the set temperature holding unit 3
May be configured to simply hold the set temperature that is the target temperature.

FIG. 3 is a block diagram schematically showing an air temperature measuring unit and an average temperature storage unit in the air conditioner which is an embodiment of the present invention. In FIG. 3, an air temperature measurement / average temperature storage circuit portion includes a temperature detector 20 including, for example, a temperature sensor, and analog-digital (A / D) conversion for converting analog temperature information from the temperature detector 20 into a digital signal. Bowl 21
And an adder / average calculator 22 that receives the digital temperature information from the A / D converter 21 and obtains and holds the average temperature for one day,
And a second average temperature storage circuit 23 which receives the average daily temperature information from the adder / average calculator 22 and stores the average daily temperature and weekly average temperature information.

The temperature detector 20 measures either the outside air temperature and the indoor temperature or the average of the outside air temperature and the indoor temperature to derive analog temperature information. When only the room temperature is measured, the room temperature is measured regardless of the room temperature when the air conditioner is not in operation, the room temperature during operation, or the non-operation / operation. In the case of a configuration that measures only the indoor temperature during operation of the air conditioner, the outdoor temperature and the indoor temperature are different, but the indoor temperature is controlled to the temperature that the user feels optimal, so this indoor temperature was measured. Even in this case, changes in the season and the environment can be seen from changes in the indoor temperature, and the indoor temperature can always be set to the optimum temperature based on the past average temperature information without the user performing delicate temperature adjustment.

The A / D converter 21 samples the analog temperature information from the temperature detector 20 at predetermined time intervals and converts it into a digital signal. The sampling interval of the A / D converter 21 is set to an appropriate interval that is sufficient to obtain the average daily temperature.

The adder / average calculator 22 receives the digital temperature information from the A / D converter 21, adds the temperature information for one day, and processes the added temperature information by, for example, an arithmetic average to obtain one day. Derive the average temperature.

Here, as the temperature information for one day, temperature information continuously measured throughout the day (24 hours) may be used, or only when the outside is bright or only when the outside is dark by using an optical sensor or the like. The temperature information measured may be used, or the temperature information measured only for a predetermined fixed period by using a clock function such as a timer may be used.

The second storage circuit 23 stores the average temperature per day for each of the first to seventh days from today to 7 days ago.
A weekly average temperature calculator 23, which receives the average temperature information from the daily average temperature storage circuits 231 to 234 and the first to seventh daily average temperature storage circuits 231 to 234 to obtain and retain the average temperature for one week 23
5 and weekly average temperature storage circuits 236 to 239 which receive the weekly average temperature information from the weekly average temperature calculator 235 and hold the average temperature of each week of the present week or 20 weeks ago.

As the memory circuits 231-234 and 236-239, an arbitrary memory device such as a register having a shift function, a memory having an address counter of a rollover configuration in which a write address / a read address moves cyclically can be used. . However, from the viewpoint of data retention, it is desirable to use a storage device having a backup function or non-volatile storage capability so that the retained data is not erased in the event of a power failure. Next, the operation will be described.

The temperature detector 20 measures the room temperature, the outside air temperature, or both of them, and derives analog temperature information indicating the measured temperature. When the temperature detector 20 is configured to measure both the indoor temperature and the outside air temperature, the average value of the both is output as the temperature information.

The A / D converter 21 samples the analog temperature information from the temperature detector 20 at predetermined intervals, converts it into digital temperature information, and gives the conversion result to the addition / average calculator 22.

The addition / average calculator 22 sequentially adds the given digital temperature information, and when the temperature information for one day has been added, the average temperature for one day is calculated by, for example, an arithmetic average, and the average temperature information for today is calculated. To the storage circuit 23.

In the storage circuit 23, the contents of the storage circuits 231 to 234 are sequentially stored in the storage circuits of the next stage in response to the write instruction signal from the addition / average calculator 22 (indicated by the broken line signal A in FIG. 3). Alternatively, it is transmitted to the weekly addition / average calculator 235, and the average temperature of today from the addition / average calculator 22 is written in the memory circuit 231. As a result, data of “average temperature 6 days ago → average temperature 7 days ago”, ..., “average temperature yesterday → average temperature yesterday yesterday” and “average temperature today → average temperature yesterday →” Updates are made.

The weekly addition / average calculator 235 receives the average temperature of seven days ago from the memory circuit 234 and sequentially adds the average temperatures, and when the addition of the average temperatures for one week is completed, the weekly average temperature is obtained by, for example, the arithmetic average, and this week. Is output as average temperature information. In memory circuits 236-239, weekly addition / average calculator
In response to the write instruction signal from 235 (indicated by the broken line B in FIG. 3), the stored contents are sequentially transmitted to the memory circuit of the next stage, and the memory circuit 36 is supplied to the weekly addition / average calculator 235. Average memory information is written as this week's average temperature. As a result, every week, "average temperature 19 weeks ago → average temperature 20 weeks ago", ..., "average temperature last week → average temperature 3 weeks ago", "average temperature last week → average temperature last week" The data is updated.

Here, the average temperature of 7 days ago is used to derive the average temperature of this week, and the weekly average temperature information is updated every week. However, weekly addition / average calculator
The average temperature information of yesterday from the storage circuit 232 may be sequentially transmitted to the memory 235, and the average temperature of this week may be derived using this. In this case, the weekly average temperature is updated every day.

Further, as a configuration for deriving the weekly average temperature, the calculator 235 receives the average temperature information for seven days in the memory circuits 231 to 234 before the average temperature information is written in the memory circuit 231, and these seven days are stored. The average temperature for one week may be derived based on the average temperature information for one minute. Even in this case, the weekly average temperature is updated every day.

By using the storage circuit 23 described above, it is possible to obtain the average value of the past required temperatures.

For example, as shown in FIG. 1, the circuit 11 for obtaining the average temperature two or three days ago has a function of reading the average temperature information stored in the storage circuits 232 and 233 and obtaining this average value. With this, the average temperature of a few days ago can be obtained and held.

Similarly, the circuit 12 that holds the average temperature of one month ago reads the stored contents of the memory circuit that stores the average temperature of three weeks ago or one week ago to four weeks ago from this week and uses the average value to obtain one month The previous average temperature can be obtained and held. Further, if the average temperature of two months ago is required, it can be obtained by reading the average temperature of 8 weeks ago to 11 weeks ago in the storage circuits 236 to 239 and obtaining the average of the read average temperature information.

Further, by using the difference between the average temperature of a few days ago and the average temperature of the day held by the memory circuit 231, it is possible to detect how the temperature is changing in a short period,
The optimum target temperature can be set by appropriately responding to changes in the environment.

In the configuration shown in FIG. 1, the target temperature (set temperature) is adjusted using the average temperature of a few days ago, the average temperature of one month ago and the average temperature of today, In this case, the average temperature two months ago, the average temperature one week ago, the current temperature, etc. may be used. In this case, the optimum target temperature can be set simply by appropriately adjusting the membership function in the fuzzy calculation unit 2.

When the air conditioner has both heating and cooling functions, the fuzzy calculator prepares two for heating and one for cooling, and sets the target temperature according to each mode during cooling and heating. If configured to
A more optimal adjustment of the target temperature can be realized.

[Effects of the Invention] As described above, according to the present invention, the average temperature of a relatively long period and a relatively short period of time is obtained and stored, and the set temperature as the target value of the indoor temperature is set according to the average temperature information. Since the adjustment is made, the following effects can be obtained.

It is possible to obtain an air conditioner in which the user can maintain the indoor temperature at an optimum temperature according to the season without finely adjusting the set temperature by the user.

Since the set temperature can be adjusted according to the season,
Unnecessary overheating and unnecessary overcooling can be reduced, and an energy-saving air conditioner can be realized.

It is possible to obtain an air conditioner having a control function of setting an indoor temperature that is optimal for a sensible temperature in response to a sudden change in air temperature.

Since the indoor temperature is set according to the season based on the past average temperature information, it is possible to adjust the set temperature according to the season without separately providing a function such as a calendar.

Moreover, since the set temperature is corrected using the average temperature, even if the accuracy measurement error is included in the part that measures the time such as one day and the measurement time, the error is caused by the averaging function. Is sufficiently compensated, it is possible to obtain an air conditioner that can always set the indoor temperature according to the season and environment.

[Brief description of drawings]

FIG. 1 is a block diagram schematically showing a configuration of a main part of an air conditioner according to an embodiment of the present invention. FIG. 2 is a diagram for explaining a method of arithmetic processing in the fuzzy arithmetic unit shown in FIG. FIG. 3 is a block diagram schematically showing a configuration of a temperature detection unit and an average temperature storage unit for deriving an average temperature in the air conditioner according to the embodiment of the present invention. In the figure, 1 is a first average temperature storage circuit, 2 is a fuzzy calculation unit, 3 is a set temperature holding unit, 20 is a temperature detector, and 21 is a temperature detector.
A / D converter, 22 is an adder / average calculator for calculating the average temperature of the day, 23 is a second average temperature storing circuit for storing the average temperature of the long term and the short term, and 231-234 is the average of the daily unit 235 is a memory circuit for storing the temperature, 235 is a weekly addition / average calculator for obtaining the average temperature of one week, and 236 to 239 are memory circuits for storing the average temperature of each week. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

(57) [Claims] 1. An air conditioner having a function of adjusting the temperature in a room by using a preset temperature as a target value, the temperature detecting means and temperature information from the temperature detecting means is received for one day. The average value of the temperature is calculated and the calculation result is stored, and the average value in the predetermined time range of the relatively long term and the relatively short term is calculated from the stored average value of the past day and Storage means for storing a calculation result; correction information generation means for generating correction information for correcting the set temperature by performing predetermined arithmetic processing on the average value information stored in the storage means; Temperature correction means for correcting the set temperature of the day in response to the correction information from the information generation means, wherein the correction information generation means, when the average temperature of the relatively long term is higher than the average temperature of the day. Generates correction information for increasing the set temperature, generates correction information for lowering the set temperature when the average temperature for the relatively long term is lower than the average temperature for the day, and further for the relatively short term. If the average temperature of the day is lower than the average temperature of the day, correction information that raises the set temperature is generated, and if the average temperature of the day is higher than the average temperature of the relatively short period, the set temperature is changed. An air conditioner characterized by generating correction information for lowering it.