JP3321071B2 - Control device for air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a control device for an air conditioner.

[0002]

2. Description of the Related Art Conventionally, a control device of an air conditioner generally uses information from a remote controller 1 and information from various sensors such as a suction temperature sensor 2 as shown in a schematic configuration diagram of FIG.
The compression is performed based on the indoor microcomputer 5 of the indoor unit that controls the indoor fan motor 3, the wind direction blade stepping motor 4, and the like, the set temperature and room temperature from the indoor microcomputer 5, and the information from various sensors such as the outside air temperature sensor 6. An outdoor microcomputer 8 of an outdoor unit for controlling the air conditioner 7 and the outdoor fan motor, etc., in a case where the indoor air-conditioning condition becomes a dew condition in order to prevent the outlet from being exposed in the cooling and the dry operation. That is, the indoor set temperature of the remote controller 1 is lower than the predetermined temperature, the suction temperature sensor 2 of the indoor unit detects a predetermined temperature or higher, and the outdoor temperature sensor 6 of the outdoor unit detects lower than the predetermined temperature. When has continued for a certain period of time, the wind direction blade of the indoor unit has been fixed at a predetermined position.

[0003]

However, in the above-described conventional air conditioner control device, when the indoor air-conditioning condition becomes a dew condition, the wind direction blade of the indoor unit is set to a predetermined value regardless of the user's intention. Since the wind is fixed to the position, the cold air is continuously blown in spite of the setting of the wind direction at the position where the wind is directly avoided, which causes discomfort. In addition, in physically weak people such as the elderly, infants, and the sick, the body temperature is deprived by the cold wind, which is a factor that causes a decrease in physical strength.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. An air conditioner has been proposed which prevents dew condensation at an outlet and prevents cold air from directly hitting the body for a long time irrespective of a user's intention. A control device is provided.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, a control device for an air conditioner according to the present invention comprises a remote control room.
Set temperature, detection temperature of the suction temperature sensor of the indoor unit,
Determined based on the temperature detected by the outside air temperature sensor of the outdoor unit
If it is detected for a certain period of time that the air conditioning load condition is such that the air outlet of the indoor unit easily condenses, the airflow direction of the indoor unit is fixed at a predetermined position at regular intervals, thereby blowing out the indoor unit. The present invention prevents dew condensation in the mouth and eliminates the need to continuously fix the wind direction blades of the indoor unit at a position different from the intention of the user.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention relates to a room temperature set for a remote controller and a suction temperature of an indoor unit.
Sensor temperature, outdoor unit outdoor temperature sensor
Determined based on the knowledge temperature air conditioning load conditions, the indoor unit
Is a control device of an air conditioner that fixes the wind direction blades of the indoor unit to a predetermined position at regular time intervals when continuously detecting that the conditions at which the air outlet of the air conditioner has easily formed dew condensation. By fixing to a predetermined position at regular time intervals, it is possible to prevent the dew condensation at the outlet of the indoor unit and to prevent the air direction vane of the indoor unit from being continuously fixed at a position different from the user's intention. Have.

In the invention according to claim 2 of the present invention, the conditions under which dew condensation is likely to occur are that the indoor set temperature of the remote controller is lower than a predetermined temperature, and that the suction temperature sensor of the indoor unit detects the predetermined temperature or higher, and The control device for an air conditioner according to claim 1, wherein the outside air temperature sensor of the outdoor unit detects that the temperature is lower than the predetermined temperature for a certain period of time. When the temperature is lower than the predetermined temperature, and the dew condensation condition is such that the suction temperature sensor of the indoor unit detects the predetermined temperature or more and the outdoor air temperature sensor of the outdoor unit detects the temperature lower than the predetermined temperature for a certain period of time. In addition to preventing dew condensation at the outlet of the indoor unit, it also eliminates the need to continuously fix the wind vanes of the indoor unit to a position different from the user's intention. Having an iodine.

According to a third aspect of the present invention, the conditions under which dew condensation easily occurs are that the indoor set temperature of the remote controller is lower than a predetermined temperature, and that the suction temperature sensor of the indoor unit detects the predetermined temperature or higher, and 2. The control device for an air conditioner according to claim 1, wherein the outside air temperature sensor of the outdoor unit detects a temperature lower than a predetermined temperature, and the indoor fan speed is equal to or lower than a predetermined value for a certain period of time. However, it is possible to prevent the dew condensation at the outlet of the indoor unit only when the condition for dew condensation is more favorable than the case described in claim 2, and to continuously connect the wind direction vanes of the indoor unit to a position different from the user's intention. It has the effect of eliminating fixation.

According to a fourth aspect of the present invention, the conditions under which dew condensation easily occurs are that the indoor set temperature of the remote controller is lower than a predetermined temperature, and that the suction temperature sensor of the indoor unit detects the predetermined temperature or higher, and 2. The air according to claim 1, wherein the outside air temperature sensor of the outdoor unit detects a temperature lower than a predetermined temperature, the indoor fan speed is equal to or lower than a predetermined value, and the operation instruction frequency of the compressor is equal to or higher than the predetermined value for a predetermined time. It is a control device of a harmony machine, and prevents the dew condensation of the outlet of the indoor unit only when the conditions under which dew condensation easily occurs are more easily dew condensation conditions than the case described in claim 3,
This has the effect of eliminating the need to continuously fix the wind direction blades of the indoor unit at a position different from the intention of the user.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 is a flowchart for explaining the operation of a control device for an air conditioner according to Embodiment 1 of the present invention. The control device for an air conditioner shown in the schematic configuration diagram of FIG. When the operation starts from the start, the timer 1 and the timer 2 for measuring time are counted in steps 11 and 12, and when the indoor set temperature of the remote controller 1 is less than 17 ° C. in step 13, the process proceeds to step 14. When the suction temperature sensor 2 of the indoor unit detects 24 ° C. or more in step 14, the process proceeds to step 15. When the outdoor air temperature sensor of the outdoor unit detects that the temperature is less than 30 ° C. in step 15, the process proceeds to step 16. If all of the conditions in steps 13, 14, and 15 are not satisfied, the timer 1 is cleared in step 17, and the process proceeds to step 16. In step 16, it is determined whether or not the timer 1 has passed a predetermined time of 20 minutes. If the time has passed 20 minutes, the process proceeds to step 18, in which the exposure condition flag is set in step 18, and if the time has not passed 20 minutes. Resets the exposure condition flag in step 19. The above steps determine whether or not the predetermined air-conditioning condition has continued for a predetermined period of time of 20 minutes.

Next, if the exposure condition flag is set in step 18, the process proceeds to step 20, where it is determined whether or not the exposure condition flag has been set, and it is determined that the exposure condition flag has been set. If so, step 21
The process proceeds to step 21 to determine whether or not the timer 2 has elapsed for 10 minutes or more. If the time has elapsed for 10 minutes or more, the process proceeds to step 22 and determines in step 22 whether or not the timer 2 is less than 15 minutes. If it is less than 15 minutes, the process proceeds to step 23, and in step 23, the wind direction blade of the indoor unit is moved to the lower limit position.

In other cases, that is, when it is not determined in step 20 that the exposure condition flag has been set, when it is not determined in step 21 that the timer 2 has elapsed for 10 minutes or more, in step 22, the timer 2 has not been set. If it is not determined that the time is less than 15 minutes, the process proceeds to step 24, where the position of the wind direction blade of the indoor unit is
The timer 2 is cleared in the next step 25.

This means that when the dew condition is satisfied, the wind direction blade of the indoor unit is moved to the lower limit position for a predetermined 5 minutes every 15 minutes, which is a fixed time, to prevent dew condensation at the outlet, and In this case, the position of the wind direction blade of the indoor unit is moved to a position set by the remote controller 1, which means that the wind blows out to a desired position by the remote controller 1. Even if it does, cold air does not continue to be blown out to unintended places for a long time only to prevent condensation at the outlet.

(Embodiment 2) FIG. 2 is a flowchart for explaining the operation of the control device for an air conditioner according to Embodiment 2 of the present invention, which is almost the same as FIG. 1 which is a flowchart of Embodiment 1. Step 15 in FIG.
The only difference is that a step 26 for determining whether or not the speed of the indoor fan motor 3 is equal to or less than the predetermined value ME tap is inserted between the step 16 and the step 16. Therefore, a detailed description of the configuration of the flowchart in FIG. 2 is omitted. The second embodiment is different from the first embodiment in that the new step 26 is added to the first embodiment so that the condition of easy dew condensation becomes more easily than the case of the first embodiment. This is to prevent dew condensation.

(Embodiment 3) FIG. 3 is a flowchart for explaining the operation of a control device for an air conditioner according to Embodiment 3 of the present invention, which is almost the same as FIG. 2 which is a flowchart of Embodiment 2. Step 26 in FIG.
The operation instruction frequency of the compressor 7 is set to the predetermined value No. The only difference is that a step 27 for judging whether the number is 8 or less or more is included. Therefore,
Detailed description of the configuration of the flowchart in FIG. 3 is omitted.
The third embodiment is different from the second embodiment in that the new step 27 is further added to the outlet of the indoor unit only when the condition under which dew condensation is more likely to occur than in the second embodiment. This is to prevent dew condensation.

[0016]

As described above, according to the control apparatus for an air conditioner of the present invention, the indoor set temperature of the remote controller and the indoor unit
Temperature detected by the air intake temperature sensor and the outside air temperature of the outdoor unit
The air conditioning load condition determined based on the temperature detected by the temperature sensor
If it is detected for a certain period of time that the conditions of the indoor unit outlet are easy to condense, the dew condensation of the indoor unit outlet is prevented, and the airflow direction blade of the indoor unit is connected to a position different from the user's intention. This prevents the cold wind from directly hitting the physically weak, such as the elderly, infants, and the sick, for a long period of time, and the cold wind deprives the body temperature and lowers the physical strength.

[Brief description of the drawings]

FIG. 1 is a flowchart illustrating an operation of a control device of an air conditioner according to Embodiment 1 of the present invention.

FIG. 2 is a flowchart illustrating an operation of a control device for an air conditioner according to Embodiment 2 of the present invention.

FIG. 3 is a flowchart illustrating an operation of a control device for an air conditioner according to Embodiment 3 of the present invention.

FIG. 4 is a schematic configuration diagram of a control device of a general air conditioner;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Remote control 2 Suction temperature sensor 3 Indoor fan motor 4 Wind direction stepper motor 5 Indoor microcomputer 6 Outdoor temperature sensor 7 Compressor 8 Outdoor microcomputer

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Masanori Ogawa 1006 Kazuma Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-4-98038 (JP, A) JP-A-5-980 322295 (JP, A) JP-A-4-24454 (JP, A) JP-A-5-79680 (JP, A) JP-A-3-294737 (JP, A) JP-A-4-203742 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 11/02 102

Claims (4)

(57) [Claims] 1. The indoor set temperature of a remote controller and the indoor unit
The temperature detected by the suction temperature sensor and the outside air temperature of the outdoor unit
Air conditioning load condition determined based on the detected temperature of the capacitors is, room
A control device for an air conditioner that fixes a wind direction blade of an indoor unit at a predetermined position at predetermined time intervals when continuously detecting that a condition at which the outlet of the unit easily condenses is detected for a predetermined time. 2. The condition under which dew condensation is likely to occur is that the indoor set temperature of the remote controller is lower than a predetermined temperature, the suction temperature sensor of the indoor unit detects a predetermined temperature or higher, and the outdoor air temperature sensor of the outdoor unit detects the predetermined temperature. 2. The control device for an air conditioner according to claim 1, wherein the detection of less than a predetermined time is a case where the detection is continued for a predetermined time. 3. The condition under which dew condensation is likely to occur is that the indoor set temperature of the remote controller is lower than a predetermined temperature, the suction temperature sensor of the indoor unit detects a predetermined temperature or higher, and the outdoor air temperature sensor of the outdoor unit detects the predetermined temperature. Less than, and
The control device for an air conditioner according to claim 1, wherein the indoor fan speed is equal to or lower than a predetermined value for a certain period of time. 4. The condition under which dew condensation is likely to occur is that the indoor set temperature of the remote controller is lower than a predetermined temperature, the suction temperature sensor of the indoor unit detects a predetermined temperature or higher, and the outdoor air temperature sensor of the outdoor unit detects the predetermined temperature. Less than, and
2. A case where the indoor fan speed is equal to or lower than a predetermined value and the operation instruction frequency of the compressor is equal to or higher than the predetermined value for a certain period of time.
The control device for an air conditioner as described in the above.