JPS63187040A - Control device of air conditioner - Google Patents

Abstract

PURPOSE:To make it possible to conduct a pleasant control even if the temperature near a remote controller and room temperature are far apart due to, for instance, the direct sun-shining to the remote controller by adding to a set temperature a deviation between the temperature of the suction air and temperature near the remote controller if the deviation is in a specified range and adding a specified value to the set temperature if the deviation is outside the specified range. CONSTITUTION:A temperature sensor S1 of the main body A of a room machine detects temperature DA of the suction air at a suction port 3. A remote controller transmitter B transmits a set temperature DRSET that is set by a temperature setting section 7 and temperature DF near the remote controller detected by a second temperature sensor S2. A controller 10 of the main body A of the room machine takes the deviation, DELTADG (DELTADG=DA-DF) as a target correction value, DELTADGobj and adds it to DRSET to obtain a target temperature, DASET for the air conditioning control, and controls a blower 2, flap 5, and compressor motor M by comparing the DASET with the suction air temperature DA, However, only when the absolute value of the target correction value, DELTADGobj (=DA-DF) is larger than 7 deg.C for instance, DELTADGobj is set not to DA-DF but to DELTAt.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a control device for an air conditioner that controls indoor temperature so that the temperature feels comfortable.

<Prior art> As a conventional control device for this type of air conditioner, for example,
There is one described in JP-A-61-173041. This will be explained below with reference to FIG.

21 is a room temperature sensor that detects the temperature TA of the air drawn into the indoor unit; 22 is a radiation sensor that detects the radiant temperature T8 from the wall surface on which the indoor unit is installed; 23 is the temperature T detected by the room temperature sensor 21; A comparator that calculates the deviation ΔT from the temperature TR obtained by the sensor 22, 24 a setting device that initially sets the set temperature T, and 25 a setter that adds the deviation ΔT to the set temperature T as a correction term for actual control. A computing unit 26 is an air conditioning control unit that switches the capacity of the compressor of the outdoor unit and controls the blower on and off based on the signal of the target temperature Tc from the computing unit 25.

With the start of heating, the temperature TA of the indoor air rises relatively quickly, but the temperature T of the wall surface rises slowly, and the amount of heat radiated from the human body by radiation is relatively large, making the room feel chilly. However, if the deviation ΔT between the suction air temperature TA and the radiant temperature T7 is greater than a predetermined value, the air conditioning control unit 26 can add the deviation ΔT to the set temperature T given by the setting device 24 and set the actual target. Please set the temperature T to a high value.
T s +ΔT), the air conditioning control unit 26 performs air conditioning control so that the intake air temperature TA matches the corrected target temperature Tc. When the wall surface temperature T rises and the deviation ΔT falls below a predetermined value, the air conditioning control unit 26 Air conditioning control is performed by setting the set temperature vTs as the target temperature T (Te −'rs ) without performing correction.

Incidentally, the places where people stay for a relatively long period of time are limited to certain places, such as the dining table or desk, but the place where the dining table or desk is placed differs from household to household. Furthermore, even within the same household, people may move from place to place due to rearrangement. On the other hand, the amount of heat radiated from the human body to the wall increases as the distance between the human body and the wall decreases. That is, the closer a person is to a wall, the more likely they are to feel chilly, making comfort control more difficult.

Therefore, as a measure to correct the air conditioning control by taking into account the factors such as where people are, and to achieve comfortable control, instead of detecting the wall surface temperature, a remote control (hereinafter abbreviated as "remote control") is used. It is conceivable to detect the temperature near the transmitter that sets the indoor temperature. That is, air conditioning control is performed based on a target temperature that takes into account the deviation between the intake air temperature and the temperature near the remote control in the set temperature.

In places where people are present for a long time, it is common to place a remote control transmitter there for remote control. Therefore, detecting the temperature near the remote control transmitter ends up detecting the temperature near the human body. Even if a person moves from place to place, the same thing can be done if he or she takes the remote control transmitter with him. be.

By taking such measures, it is possible to correct the air conditioning control by taking into consideration the element of the position of the person, and more effective comfort control can be expected.

<Problems and Points to be Solved by the Invention> However, in the above measures, the following problem occurs, which is unlikely to occur in the case of wall surface temperature detection.

In other words, there may be cases where the remote control transmitter is placed in a place where the room temperature cannot be detected properly.For example, if the remote control transmitter is placed inside a kotatsu due to a child's mischief during heating, or during cooling, If the remote control transmitter is placed next to a window exposed to direct sunlight or taken outside in the cold, the temperature near the remote control will be far from room temperature. In the case of the conventional example in which the radiation sensor is attached to the indoor unit body, such a problem does not occur.

As mentioned above, the correction value determined based on the temperature near the remote control, which is far from the room temperature, also deviates from the ideal correction value, making it impossible to perform proper air conditioning control and making the room temperature less comfortable.

An object of the present invention is to enable comfortable control even when the temperature near the remote control is far from room temperature.

<Means for Solving the Problems> In order to achieve the above object, the present invention has the following configuration.

That is, the air conditioner control device of the present invention is equipped with a first temperature sensor (S1) that detects the temperature (DF) of intake air and a remote control transmitter (B), and the remote control transmitter (B) ) near the temperature (DF
); a second temperature sensor (St) for detecting the first temperature; When the deviation (ΔDG) between the temperature (DA) detected by the A degree sensor (S1) and the temperature (Dr) detected by the second temperature sensor (S2) is within a predetermined range, the deviation (ΔDG) is within a predetermined range. ) is added to the set temperature (De, A) to perform air conditioning control based on the target temperature (DA3tA), and when the deviation (ΔDG) is outside the predetermined range, the predetermined value (Δt) is set to the set temperature (D □!?) Air conditioning control means (14) that performs air conditioning control based on the target temperature (DAszv) taken into account.

However, in this configuration, the predetermined value (Δt) is a broad concept that includes both a single constant that remains unchanged and multiple constants that are selected depending on the driving situation. .

<Effect> The effects of the configuration of the present invention are as follows.

Remote control transmitter placed close to the person (B)
The second temperature sensor (S2), which is installed in The control will be corrected.

However, the temperature detected by this second temperature sensor (S2) (
Temperature correction taking DF) into consideration is performed when the deviation (ΔDG) is within a predetermined range.

When the deviation (ΔDG) is outside the predetermined range, the temperature near the remote control (DF) detected by the second temperature sensor (S2) is not taken into consideration, that is, the intake air temperature (DA) detected by the first temperature sensor (S1) is Since temperature correction is performed using a predetermined value (Δt) instead of the deviation (ΔDG) from the temperature near the remote control (DF) measured by the second temperature sensor (S2), the remote control transmitter (B) may be placed in an inappropriate location. Even if the temperature near the remote control is far from room temperature, the remote control will not be affected by the adverse effects.

<Example> Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is a block diagram of a control device for an air conditioner, and FIG. 2 is a sectional view of an indoor unit of the air conditioner.

In FIG. 2, A is the indoor unit main body, and this indoor unit main body A includes a heat exchanger 1, a blower 2, an indoor air suction port 3,
It has a heat exchanger air outlet 4, a flap 5 provided at the outlet 4 and swinging around a horizontal axis, and a vertical vane 6 provided at the outlet 4 and swinging around a vertical axis. A first temperature sensor S1 such as a thermistor is provided to detect the temperature of the intake air.

B is a remote control transmitter (hereinafter simply abbreviated as remote control transmitter), and this remote control transmitter B is
Temperature near the temperature setting unit 7 and remote control transmitter B for setting the target room temperature DNSET.

There is a second temperature sensor S2 that detects the temperature. The remote control transmitter B receives the set temperature D□ set by the temperature setting section 7,
and the temperature near the remote control detected by the second temperature sensor S2 are each coded and transmitted by infrared rays.

Since the remote control transmitter fiB is placed near the person, the second temperature sensor S! detects the temperature D near the remote control.
In the end, the temperature near the person will be detected.

As shown in FIG. 1, the indoor unit main body A includes a set temperature receiving section 8 that receives a coded signal of the set temperature D A temperature receiving section 9 and a blower 2. flap 5
and a controller 10 that controls the compressor motor M of the outdoor unit.

The controller 10 is composed of a microcomputer, and functionally includes the following elements.

That is, the intake air temperature D input from the first temperature sensor SI
Deviation ΔDG (ΔD.

The deviation calculation section means 11 that calculates "DA DF)" and the set temperature D input from the set temperature receiving section 8 add the deviation ΔD to the target temperature DAsE7 (D
Astt = D ++ sEt + ΔDG), a target temperature calculation unit 12, a suction air temperature, and a target temperature D.
Comparison means 13 for comparing ksET and comparison means 13
Based on the output of air blower a2. It includes an air conditioning control means 14 that controls the flap 5 and the compressor motor M.

D ASW = D ksET + D A D y
Since the temperature near the remote control is the temperature near the person, the target temperature D□,T is corrected by taking into consideration the location where the person is, and such a target temperature D □
, T, the air conditioning will always be controlled comfortably no matter how far away the person is from the wall.

Next, the operation of this embodiment will be explained based on the flowchart shown in FIG. In this flowchart, 3
The 0-second timer and 3-minute timer repeat starting every time the time is up.

In step S1, it is determined whether the 30 second timer has timed up. Since time amplification is not performed at the start of operation, the process proceeds to step S2, and it is determined whether the operation is at the start or is already in operation. At the start of operation, the process advances to step S3 to read and store the set temperature DIlsea from the set temperature receiver 8, and in step S4 to read and store the intake air temperature DA from the first LfJL degree sensor S1.
In step S5, the remote control vicinity temperature DF is read from the remote control vicinity temperature receiving section 9 and stored. Step Sll
and the target correction value ΔD. , J, ΔD,. b j ”D
Calculate and store by A D F, step 3
12, the deviation or correction is ΔD, and ΔD. , J, the process advances to step S13.

Steps 313 to 318 are the target correction value ΔD calculated in step Sll. b==DA Absolute value of DF is 7°C
In the above case, the correction process is performed based on the intake air temperature DA without responding to the temperature near the remote control DF.

At the start of operation, ΔD6゜bj=Ds Dr #
Since it is 0, the determination in step S13 is NO, and the process proceeds to step S15 without passing through step S14.

Since ΔDG”ΔD,.bJ is set in step S12, it is determined as YES in step S15, and ±0.5°C
The process proceeds to step 319 without performing any correction. In addition, ±
Details of the 0.5°C correction will be described later.

In step 319, set the target temperature D ASW a=
D113! T+ΔDG is calculated and stored, and in step S20, the suction air temperature DA stored in step S4 is equal to the target temperature DA stored in step 319.A3.
Determine whether it matches 7. At the start of operation, it is generally D se D str. That is, in the heating season, DA<D++,
tt, so steps 320-321-322-5
24, the operating frequency is increased to increase the heating capacity.

In the cooling season, since D a >D xszt, the process proceeds from steps 520-821 to S23 to S24 to increase the operating frequency and increase the cooling capacity.

In any case, at the beginning of operation, the air conditioning capacity is increased and the process returns to step Sl.

Step 31 until the 30 second timer times out.
Proceeding to step S6 from -32, the previous correction value ΔD0 is held, and step S19-S20-S2l-
s22-...The cycle of 524-5t is repeated.

In this case, the operations in steps 313→...517 (or 318) are not performed.

When the 30 second timer times up, the process proceeds from step S1 to step S7, where the suction air temperature DA is read and stored again, and it is determined in step S8 whether the 3 minute timer times up.

The 3-minute timer does not time up until the 30-second timer times up six times, so proceed to step Sll and calculate ΔDG+l□= based on the new intake air temperature DA.
DA Dr is calculated and stored, and in step 312 Δ
ΔD, updated as D,. 6. After setting, proceed to step S13, that is, step 513...
...The operation 517 (or 318) is repeatedly executed every 30 seconds. Then, step 319→520-4
S21→322→...S24→S1 are executed.

The 30 second timer restarts immediately after the time amplifier, but until the next time up, steps 31-32
-36→S19→520-321→522-・・・・
- Repeat 324-3l. That is, the intake air temperature, which is the basis of air conditioning control, is read every time the 30 second timer times up, and the correction value ΔDG is updated, and the judgment in step S13 and the correction process of ±0.5°C are executed. However, at other times, the suction air temperature DA is not read and the previous correction value ΔD is held, and the ±0.5°C correction process is not performed.

In this process, when the 30 second timer times up, the suction air temperature DA is updated in step 5L-37, and
When the minute timer times out, steps 38-39-
The set temperature D 11427 and the temperature near the remote control are updated at 3IO, and the target correction value ΔD is updated based on A and DF at step Sll. , update J, step 3
In step S12, the correction value ΔDG is updated, and in step S13→...
...After 517 (or 818), a new 11+3! is entered in step S19! The target temperature D□ is updated based on A and ΔD. That is, the complete update of the set temperature Do, A, the temperature near the remote control DF, and the intake air temperature DA is as follows.
Do this every 3 minutes. On the other hand, only the intake air temperature DA is updated every 30 seconds.

Next, the operation of the air conditioning capacity control process after step S20 will be explained.

First, the operation during the heating season will be explained. At the beginning of heating, the intake air temperature DA is lower than the target temperature DAOT. Therefore, steps 520-321→522-
324, the operating frequency is increased to increase the heating capacity. As a result, as shown in FIG. 4, the suction air temperature DA and the temperature near the remote control DF rise, but the rate of increase is greater for the suction air temperature DA. Therefore, the target correction value ΔD is updated in step Sll every 30 seconds. ,,
=DA-D, increases and the target temperature D astr = D m5tt + ΔDc (
=D++sty+ΔD G++b;) also increases, and the heating capacity is increased by the increased amount.

The increasing rate of ΔDGobj and [)Astt gradually becomes higher (
Therefore, the rate of increase in heating capacity will also increase.

As time passes, the target correction value ΔD cob, -Da
The rate of increase in DF decreases and the target temperature I) Astt becomes
decreases from its maximum value. However, still DA<D
Since the hstt state continues, step S20 → 521-
Repeat operations 322-324. As a result, when the suction air temperature DA reaches the target temperature D□E7, step S2
0 becomes YES, the process proceeds to step 326, and the heating capacity is maintained at the current level. If the suction air temperature DA exceeds the target temperature DAstr for some reason, the process proceeds to steps S20→521-323→S25, and the heating capacity is reduced.

Next, the operation during the cooling season will be explained. At the beginning of cooling, the intake air temperature is the target temperature D A3E
? higher than Therefore, steps 520-521→32
3-324 to increase the operating frequency and increase the cooling capacity. As a result, as shown in Fig. 5, the suction air temperature D
Temperature near A and remote control.

decreases, but the rate of decrease is greater for the intake air temperature DA. Therefore, the target correction value ΔDG is updated in step 311 every 30 seconds, . . . =DA−D.

(<0) increases to the negative side, and the target temperature DAstr'' D++stA+ΔD updated in step S19 also increases to the negative side, increasing the cooling capacity by that increase.Decline in ΔD cabj and D AlF2 The rate gradually increases, and the rate of increase in cooling capacity also increases.

As time passes, the target correction value ΔD. bi=DA
The drop rate of Dr decreases, and the target temperature D07. increases from its minimum value. However, it still remains.

> Since the DARET state continues, step 520-32
1-323-324 are repeated, and as a result, the suction air temperature DA reaches the target temperature D02. When reaching , the determination in step 320 becomes YES and the process proceeds to step S26.
Maintain current cooling capacity. If the suction air temperature DA falls below the target temperature DASET for some reason, step 520-IS21-522-325
This progresses and reduces the cooling capacity.

In both cases of heating and cooling, the target temperature D0. A=
D□□? 100A Temperature near the remote control in DF,
is the temperature near the person, so this target temperature D A
Air conditioning control by sxa provides comfort at all times regardless of changes in the distance between the person's location and the wall surface.

Next, the operation of the ±0.5° C. correction process performed every 30 seconds will be described.

If remote control transmitter B is placed inside a kotatsu during heating, placed in a place exposed to direct sunlight during cooling, or taken outside in the cold, the temperature near the remote control DF will differ significantly from the room temperature. . The target correction value ΔD is based on such inaccurate temperature near the remote control. , J (=DA-DF'), the correction value is far from the ideal target correction value, so comfortable control cannot be achieved.

Therefore, it is determined whether a large discrepancy has occurred based on whether the absolute value of the target correction value ΔD0°,j is 7°C or more.

That is, at the timing when the 30 second timer times up, in step 513, the target correction value ΔD6°bt (=
It is determined whether the absolute value of DADr) is greater than 7°C. If YES, the process proceeds to step S14, where the target correction value ΔDGobj is set to a predetermined value Δt instead of the previous DA DF (ΔD0°1=Δt).

What this predetermined value Δt means is that bt is not always an unchanging constant regardless of the driving situation;
This temperature is selected based on data stored in the ROM in advance depending on the driving situation at the time. However, D
A It is treated as a fixed value compared to something that fluctuates frequently like Dr. The difference from the air temperature DA is 1
The difference is merely the difference between bt when the temperature is 0°C or higher and bt when the temperature is lower than 10°C.

Step S15. In S16, the comparison target of the correction value ΔD is the target correction value ΔD G6bj, but ΔD0
Since ゜bj=Δt, for convenience of explanation, ΔD. Use bt instead of 1. In step S15, the previous correction value ΔD6
and a predetermined value Δt. If they do not match, the process proceeds to step 316, where it is determined whether the correction value ΔD is larger than the predetermined value Δt. When ΔDG>bt, the process proceeds to step S17, where the current correction value ΔD is set to a temperature 0.5°C lower than the previous correction value ΔD, and in step 319, the target temperature is set based on the corrected ΔDG. Update DA*tT. Still ΔD after 30 seconds.

> bt, a temperature lower by 0.5° C. is set as the current correction value ΔD. When the correction value ΔD eventually becomes equal to the predetermined value Δt through this stepwise downward correction of 0.5° C., the process directly advances from step S15 to step 319.

In the judgment at step 316, if the correction value ΔD0 is smaller than the predetermined value Δt, the process proceeds to step 31B and the current correction value ΔD is set to be 0.5° C. higher than the previous correction value ΔD.
A high temperature is set, and in step S19, the target temperature DASET is updated based on the corrected ΔD6. 30
If ΔD is still < bt after 2 seconds, an additional 0.5°C
The higher temperature is set as the current correction value ΔDr. When the correction value ΔD eventually becomes equal to the predetermined value Δt through this stepwise upward correction of 0.5° C., the process directly advances from step S15 to step S19.

In other words, remote control transmitter B is placed inside the kotatsu.
The detected temperature DF near the remote control is far from the room temperature due to reasons such as being placed next to a window exposed to direct sunlight or being taken outside in the cold, and the target correction value ΔD calculated in step Sll. Even if an abnormal situation occurs in which , , = DA-D is far from the current ideal target correction value, comfort control can be achieved because the air conditioning is controlled based on the pre-programmed predetermined value Δt. be done.

<Effect of the invention> According to the present invention, the following effects are achieved.

That is, the intake air temperature (D
When the deviation (ΔDG) between the temperature near the remote control (DF) measured by the second temperature sensor (S2) and the temperature near the remote control (A) is outside the predetermined range, the predetermined value (bt) is used without taking into account the temperature near the remote control (DF). If the remote control transmitter R (B) is placed inside a kotatsu, placed next to a window exposed to direct sunlight, or taken outside in a cold room, the room temperature may not be detected properly and the remote control Even if the surrounding temperature is far from room temperature, the adverse effects of this can be avoided and comfortable air conditioning control can be performed.

[Brief explanation of the drawing]

Figures 1 to 5 relate to embodiments of the present invention, in which Figure 1 is a block diagram of the control device of the air conditioner, Figure 2 is a sectional view of the indoor unit of the air conditioner, and Figure 3 is an explanation of the operation. FIG. 4 is a temperature characteristic diagram during heating, and FIG. 5 is a temperature characteristic diagram during cooling. FIG. 6 is a block diagram of a conventional example. B... Remote control transmitter S1... First temperature sensor S2... Second temperature sensor 14... Air conditioning control means DA... Suction air temperature... Temperature near the transmitter ΔD6. ...Deviation (correction value) D*3! , r...Set temperature DASET...Target temperature Δt...Predetermined value

Claims (1)

[Claims] (1) A first temperature sensor (S_1) that detects the temperature (D_A) of the intake air and a temperature sensor (D_F) installed in the remote control transmitter (B) that detects the temperature (D_F
); and a second temperature sensor (S_2) that detects a deviation (D_F) between the temperature (D_A) detected by the first temperature sensor (S_1) and the temperature (D_F) detected by the second temperature sensor (S_2). When ΔD_G) is within a predetermined range, the deviation (ΔD_G) is converted to the set temperature (
Target temperature (D_A_S
Air conditioning control is performed based on the deviation (ΔD
_G) is outside the predetermined range, the target temperature (D_R_S_E_T) is set by adding the predetermined value (Δt) to the set temperature (D_R_S_E_T).
A control device for an air conditioner, comprising: an air conditioning control means (14) that performs air conditioning control based on an air conditioner (D_A_S_E_T).