JP4134539B2 - Air conditioner control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
[0002]
The present invention relates to a control device for an air conditioner, and more particularly to a control device for an air conditioner that can accurately set a timing for shifting the air conditioner to a predetermined operation state (for example, nighttime low noise operation). Is.
[Prior art]
[0003]
For example, when a 24-hour store such as a convenience store exists in a residential area, the operation of the air conditioner is reduced at night (that is, the upper limit of the compressor operating frequency is lowered). In some cases, it is necessary to perform low noise operation at night to lower the upper limit of the outdoor fan speed.
[0004]
However, the air conditioner has a built-in timer count function (for example, a 24-hour timer count function), but does not have a function for recognizing the time. It was necessary to switch the operation manually.
[0005]
On the other hand, in order to avoid the cumbersome method of switching manually when that time comes, there is also a method of giving the air conditioner a function to recognize the time, but in that case, not only the cost increases, A new problem arises that the user needs to reset the time after a power failure.
[0006]
Therefore, as shown in FIG. 4 (a), paying attention to the fact that the daily temperature change pattern is almost similar, during the counting of the 24-hour timer built in the air conditioner, FIG. 4 (b) As shown in FIG. 4, the timing at which the highest temperature is recorded is stored as timing data T _{1 to} T ₅ over a plurality of days, and an average value Tave of these timing data T _{1 to} T ₅ is obtained, and the time For example, when the air conditioner is set to around 2 pm and 8 hours have passed since this time (that is, the timer has counted 8 hours), the air conditioner automatically shifts to nighttime low noise operation. Is considered.
[Problems to be solved by the invention]
[0007]
However, in the case of the above-described method, as shown in FIG. 5 (a), on the day when it rains from around noon, the timing at which the highest temperature is recorded may deviate significantly from around 2pm. Then, as shown in FIG. 5 (b), due to the presence of this large off timing data T _3, so that the over this subsequent multi-day greatly shifted average value Tave. As a result, the transition time for nighttime low noise operation of the air conditioner is determined based on this average value Tave, and the nighttime low noise operation start time may deviate from the optimum time, which may cause discomfort to the neighborhood. Arise.
[0008]
The present invention has been made in view of the above points, and in determining the average value of the maximum temperature, the average value is determined for the group having the largest number of data , thereby enabling more accurate time setting. The purpose is to make it.
[Means for Solving the Problems]
[0009]
According to the first aspect of the present invention, as means for solving the above-mentioned problems, the timing of the highest temperature detected by the outside air temperature detecting means 8 during counting of the 24-hour timer is stored as timing data T ₁ , T _2. Counts the number of data in timing data groups A, B,... Within the predetermined time t ₁ before and after the storage unit 11 and the timing data T ₁ , T _2. The arithmetic unit 12 that calculates the average value Tave for a large number of groups, and then the air conditioner transitions to a predetermined operating state after a set time t with the average value Tave obtained by the arithmetic unit 12 as a reference. together constitute a control unit 13 for outputting a control signal to the timing data groups according to the number of the timing data stored in the storage unit 11 , So that to change the predetermined time t ₁ which defines the B · ·.
[0010]
With the above configuration, the timing of the highest temperature recorded during the count of the 24-hour timer is stored as timing data T ₁ , T ₂ ..., And these stored timing data T ₁ , T _2. The number of data of the timing data groups A, B,... Within the predetermined time t ₁ before and after is counted, and the average value Tave is obtained for the group with the largest number of data, and the set time thereafter with this average value Tave as a reference After the elapse of t, the air conditioner is shifted to a predetermined operation state. That is, the air conditioner can be automatically shifted to a predetermined operating state at almost the same time every day since it is difficult for deviation to occur in the reference average value Tave. In addition, the predetermined time t ₁ that defines the timing data groups A, B,... Can be changed to an optimum value according to the number of stored timing data , and deviation is less likely to occur due to the reference average value Tave.
[0011]
As in the invention of claim 2 , in the control device for an air conditioner according to claim 1 , when the predetermined time t ₁ is set shorter as the number of timing data increases, an average value serving as a reference Tave makes it more difficult for displacement to occur.
[0012]
As in the invention of claim 3, claim 1 in the control device for an air conditioner in our and 2 according to any one claim, nocturnal noise a predetermined operating condition being migrated by the control signal from the control unit 13 When driving, the low-noise driving start time at night will be almost the same time every day, and there will be no discomfort to the neighborhood.
DETAILED DESCRIPTION OF THE INVENTION
[0013]
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0014]
As shown in FIG. 1, this air conditioner includes a compressor 1, a four-way switching valve 2, an outdoor heat exchanger 3 that functions as a condenser during cooling operation and an evaporator during heating operation, and an electric expansion valve 4 The refrigerant heat circuit is configured by connecting the indoor heat exchanger 5 acting as an evaporator during cooling operation and acting as a condenser during heating operation, and the four-way switching valve 2 sequentially by refrigerant piping, By switching the four-way switching valve 2, the refrigerant is configured to be able to reversibly circulate in the refrigerant circuit. Reference numeral 6 denotes an outdoor fan, 7 denotes an indoor fan, and 8 denotes an outside air temperature sensor that functions as outside air temperature detecting means.
[0015]
The compressor 1, the four-way switching valve 2, the outdoor heat exchanger 3, and the electric expansion valve 4 constitute an outdoor unit X. The outdoor unit X includes a microcomputer unit 9 (hereinafter referred to as a microcomputer). (Abbreviated).
[0016]
The microcomputer 9 includes a detection unit 10 to which temperature information from the outside air temperature sensor 8 is input, and a 24-hour timer (built in the microcomputer) among the temperature information input to the detection unit 10. timing data T ₁ to the timing of the maximum temperature, T ₂ ... a storage unit 11 which stores a (see FIG. 2), the timing data T ₁ stored in the storage unit 11, T ₂ a predetermined time before and after with respect to ... The number of data of the timing data groups A, B, and C in t ₁ (see FIG. 2) is counted, and the average value Tave = (T ₁ + T ₂ + T ₄ + T ₅ ) / 4 for the group C having the largest number of data. And a predetermined value for the air conditioner after a set time t (e.g., 8 hours) with the average value Tave obtained by the arithmetic unit 12 as a reference (e.g., 14:00) And a control unit 13 that outputs a control signal so as to shift to an operating state.
[0017]
The predetermined operating state shifted by the control signal from the control unit 13 is a nighttime low noise operation that lowers the upper limit value of the operating frequency of the compressor 1 and lowers the upper limit value of the rotational speed of the outdoor fans 6 and 6. ing.
[0018]
The contents of control by the microcomputer 9 will be described with reference to the flowchart shown in FIG.
[0019]
In step S <b> 1, the outside air temperature is monitored by the outside air temperature sensor 8, and the outside air temperature information is input to the detection unit 10 of the microcomputer 9. In step S2, stored in the storage unit 11 as the 24-hour timer timing data T ₁ time of maximum temperature during the count (which is built in the microcomputer), T ₂ · · (see FIG. 2). Average Tave of 1 week timing data T ₁ through T ₇ is determined in step S3. At this time, with respect to the timing data T _{1 to} T ₇ stored in the storage unit 11, the number of data of the timing data groups A, B, and C within the predetermined time t ₁ (see FIG. 2) is counted, and the largest number of data is counted. The average value Tave = (T ₁ + T ₂ + T ₄ + T ₅ ) / 4 is calculated by the calculation unit 12 for many groups C. In step S4, the air conditioner is set to the upper limit value of the operating frequency of the compressor 1 after the set time t (for example, 8 hours) has elapsed with the average value Tave obtained by the calculation unit 12 as a reference (for example, 14:00). The operation is shifted to low noise operation at night to lower the upper limit of the rotational speed of the outdoor fans 6 and 6.
[0020]
As described above, in the present embodiment, the timing of the highest temperature recorded during the count of the 24-hour timer is stored as the timing data T ₁ , T ₂ ..., And these stored timing data T ₁ , The number of data of the timing data groups A, B,... Within the predetermined time t ₁ before and after T ₂ .. is counted, and the average value Tave is obtained for the group C with the largest number of data, and this average value Tave is used as a reference. Since the air conditioner is shifted to low-noise operation at night after the set time t has elapsed, the air conditioner is turned off at approximately the same time every day from the point that it is difficult for the standard average value Tave to shift. It can automatically shift to noise driving. Therefore, there is no discomfort in the neighborhood.
[0021]
Further, the predetermined time t ₁ that defines the timing data groups A, B, and C is, for example, 2 hours, but it depends on the number of timing data T ₁ , T ₂ , and so on stored in the storage unit 11. The predetermined time t ₁ may be changed. In this case, the predetermined time t ₁ can be changed to an optimum value according to the number of stored timing data T ₁ , T _2. deviation is less likely to occur by the value Tave, in which case, by setting shorter the predetermined time t ₁ in accordance with the timing data number T _1, T ₂ · · increases, the more the deviation by the average value Tave of the reference occur It becomes difficult.
【The invention's effect】
[0022]
According to the first aspect of the present invention, the storage unit 11 stores the timing of the highest temperature detected by the outside air temperature detection means 8 during the counting of the 24-hour timer as the timing data T ₁ , T _2. The number of data of the timing data groups A, B,... Within the predetermined time t ₁ before and after the timing data T ₁ , T ₂ ... Stored in the storage unit 11 is counted, and the average of the group C having the largest number of data The calculation unit 12 that calculates the value Tave, and outputs a control signal so that the air conditioner shifts to a predetermined operating state after the set time t has elapsed with reference to the average value Tave obtained by the calculation unit 12 constitute a control unit 13, the timing of the maximum temperature recorded during the count of the 24-hour timer is stored as timing data T _1, T ₂ · ·, which Timing data group A in the front and rear predetermined time t ₁ with respect to the stored timing data T _1, T ₂ · · the number data B · · are counted, the average value Tave is the most data having a large number of the group C Since the air conditioner is allowed to shift to a predetermined operation state after the set time t has elapsed with respect to the average value Tave as a reference, the standard average value Tave is less likely to deviate almost every day. There is an effect that the air conditioner can be automatically shifted to a predetermined operation state at the same time. In addition, since the predetermined time t ₁ that defines the timing data groups A, B,... Is changed according to the number of timing data stored in the storage unit 11, the predetermined time t ₁ is changed according to the number of stored timing data. Thus, the predetermined time t ₁ defining the timing data groups A, B,... Can be changed to an optimum value, and there is also an effect that deviation is less likely to occur due to the reference average value Tave.
[0023]
As in the invention of claim 2 , in the control device for an air conditioner according to claim 1 , when the predetermined time t ₁ is set shorter as the number of timing data increases, an average value serving as a reference Tave makes it more difficult for displacement to occur.
[0024]
As in the invention of claim 3, claim 1 in the control device for an air conditioner in our and 2 according to any one claim, nocturnal noise a predetermined operating condition being migrated by the control signal from the control unit 13 When driving, the low-noise driving start time at night will be almost the same time every day, and there will be no discomfort to the neighborhood.
[Brief description of the drawings]
FIG. 1 is a refrigerant circuit diagram of an air conditioner according to an embodiment of the present invention.
FIG. 2 is a schematic diagram illustrating a distribution example of timing data for calculating an average value in the control device for the air conditioner according to the embodiment of the present invention;
FIG. 3 is a flowchart showing the contents of control in the control device for the air conditioner according to the embodiment of the present invention;
4A is a time chart showing a general temperature change pattern, and FIG. 4B is a schematic diagram showing a distribution example of timing data for calculating an average value at that time.
5A is a time chart showing a temperature change pattern when it rains around noon on the second day, and FIG. 5B is a timing data distribution example for calculating the average value at that time. It is a schematic diagram shown.
[Explanation of symbols]
1 is a compressor, 3 is an outdoor heat exchanger, 4 is an electric expansion stool, 5 is an indoor heat exchanger, 6 is an outdoor fan, 8 is an outside air temperature detecting means (outside air temperature sensor), and 9 is a microcomputer unit (microcomputer). 10 is a detection unit, 11 is a storage unit, 12 is a calculation unit, 13 is a control unit, T ₁ , T ₂ ... Are timing data, A, B... Are timing data groups, t is a set time, t ₁ is Predetermined time.

Claims (3)

A storage unit (11) for storing the timing of the highest temperature detected by the outside air temperature detection means (8) during the counting of the 24-hour timer as timing data (T ₁ ), (T ₂ ),. The number of data of the timing data groups (A), (B),... Within the predetermined time (t ₁ ) before and after the timing data (T ₁ ), (T ₂ ),. The calculation unit (12) for calculating the average value (Tave) for the group having the largest number of data, and then, after the set time (t) has elapsed, using the average value (Tave) obtained by the calculation unit (12) as a reference comprises outputting a control signal to transition to a predetermined operating condition to the air conditioner and (13), timing data according to the number of the timing data stored in the storage unit (11) (A), (B) said defining a · predetermined time (t ₁₎ control device for an air conditioner which is characterized in that so as to change the. It said predetermined time (t ₁₎ control device for an air conditioner of claim 1, wherein it has such a set shorter as the number of timing data increases. Wherein the control unit (13) a predetermined operating condition at night low noise operation and the possible control of the air conditioner of claim 1 Contact and 2 according to any one claim, characterized in that migrated by a control signal from the .

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