KR100248765B1 - Operation control apparatus for air conditioner and oper ation control method thereof - Google Patents

Abstract

The present invention relates to an operation control apparatus and an operation control method of an air conditioner, the indoor temperature sensing means for detecting the indoor temperature, the opening stage detecting means for detecting the opening stage of the up and down wind direction control blade, the rotational speed of the indoor fan motor And a speed sensing means for sensing the temperature, and a control means for controlling the cooling operation by increasing the discharge air volume by one step when the dew is formed under the conditions of the indoor temperature sensing means, the open stage sensing means, and the speed sensing means. If the dew is formed around the up and down wind direction control wing and the discharge port during the cooling operation, the air volume is increased by one step to prevent the dew condensation around the up and down wind direction control wing and the discharge port.

Description

Operation control device of air conditioner and its operation control method {OPERATION CONTROL APPARATUS FOR AIR CONDITIONER AND OPERATION CONTROL METHOD THEREOF}

The present invention relates to an operation control device and an operation control method of the air conditioner, and more particularly, the operation control device of the air conditioner for preventing the dew condensation around the up and down wind direction control wing and the discharge port during the cooling operation and The operation control method.

In general, an air conditioner includes a cooling device for cooling indoor hot air and supplying it to the room, and a heating device for supplying indoor cooling air to the room.

In addition, there is also a cooling and heating device that combines the cooling function and the heating function, a situation that includes a clean function to clean the contaminated indoor air.

FIG. 1 shows an indoor unit (hereinafter, referred to as an indoor unit) of an air conditioner (commonly referred to as an "air conditioner") that functions as an air conditioner among the aforementioned air conditioners, and the air conditioner is an outdoor unit not shown. Of course, it includes (hereinafter referred to as an outdoor unit).

The indoor unit 10 of the conventional air conditioner illustrated in FIG. 1 includes a suction port 11 formed at an upper portion of the front surface to suck indoor air, and a foreign material floating in the indoor air sucked through the suction port 11. The air filter 12 mounted on the rear side of the intake port 11, the discharge port 13 formed in the lower front side so that the sucked air is discharged back to the room, and the air discharged through the discharge port 13 in the vertical and horizontal directions And a wind direction control vane 14 mounted to the discharge port 13 to control the wind direction, and a duct 15 mounted therein to guide the flow of indoor air discharged to the discharge port 13 through the suction port 11. And an indoor heat exchanger (16) mounted at the rear side of the inlet port (11) to heat-exchange the air sucked through the inlet port (11), and at the same time inhaling the indoor air through the inlet port (11). Heat exchanged by 16 Group consists of the indoor fan motor 18 is mounted to the rear lower portion of the indoor heat exchanger (16) to discharge into the room through the discharge port 13.

When the cooling operation is started in the air conditioner configured as described above, the control means not shown drives the indoor fan motor 18, and as the indoor fan motor 18 is driven as described above, the indoor air flows through the inlet 11. It begins to be sucked into the indoor unit 10.

Foreign matters such as dust floating in the indoor air sucked through the inlet 11 are removed while passing through the air filter 17, and indoor air in which foreign matters such as dust are removed by the air filter 17 is removed. Heat is exchanged and cooled by latent heat of evaporation of the refrigerant flowing in the indoor heat exchanger 16 while passing through the air (16).

In addition, the air cooled by heat exchange in the indoor heat exchanger (16) is guided downward by the duct (15) and discharged into the room through the discharge port (13), and the cold wind discharged through the discharge port (13) controls the wind direction. Wind direction is adjusted up and down or left and right according to the wind direction angle of the wing (14).

However, when the air conditioner performs the cooling operation as described above, the cool air discharged from the indoor unit meets the hot air in the room, and dew is formed around the upper and lower wind direction control blades and the discharge port. As the dew forms, the air conditioner There was a problem that the appearance of the dirty.

In particular, when the cooling operation is performed in a state where the indoor fan air volume is reduced at a low temperature and the up and down wind direction control vanes are opened to the minimum, dew is likely to form around the up and down wind direction control vanes and the discharge port.

Accordingly, the present invention is to solve the problems of the prior art as described above, the air conditioner operation control device and the operation control method for preventing the phenomenon of dew condensation around the up and down wind direction control wing and the discharge port during the cooling operation. The purpose is to provide.

Operation control apparatus of the air conditioner according to the present invention for achieving this object, by controlling the angle of the up and down wind direction control blades and the left and right wind direction control blades to control the direction of the discharge air flow, by adjusting the rotational speed of the indoor fan motor In the operation control apparatus of the air conditioner for controlling the air flow rate of the discharge air flow,

An indoor temperature sensing means for sensing an indoor temperature, an opening stage sensing means for sensing an opening stage of the up-down wind direction control blade, a speed sensing means for sensing a rotational speed of the indoor fan motor, the indoor temperature sensing means and an opening stage sensing means. And a control means for controlling the cooling operation by increasing the discharge air volume by one step when the dew is formed under the output of the speed detecting means.

Operation control method of the air conditioner according to the present invention for achieving the object as described above, the direction of the discharge air flow by controlling the angle of the up and down wind direction control blades and the left and right wind direction adjustment blades, the rotational speed of the indoor fan motor In the operation control method of the air conditioner for controlling the air volume of the discharge air flow by adjusting the,

Determining whether an operation start signal of the air conditioner is input; setting an operation condition of air conditioning if an operation start signal of the air conditioner is input; determining whether the set operation condition is a cooling operation; Or operating the air conditioner according to the selected operating condition; if the set operating condition is a cooling operation, operating the air conditioner normally; and determining whether dew condensation is formed around the upper and lower wind direction control blades and the outlet. When the dew is formed around the up and down wind direction control blades and the discharge port, characterized in that consisting of the step of performing the cooling operation while rotating the indoor fan motor with the air flow increased by one step than the set air flow.

1 is a cross-sectional view of an indoor unit of an air conditioner according to a first embodiment of the present invention;

2 is a block diagram of an operation control apparatus of an air conditioner according to the present invention;

3 is a cross-sectional view of the indoor unit for explaining the operation control apparatus of the air conditioner according to the present invention;

Figure 4 is a flow chart of the operation control method of the air conditioner according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100: power supply means 102: operation operation means

104: control means 106: room temperature detection means

108: indoor heat exchanger temperature sensing means 110: compressor driving means

111 compressor 120 wind direction control means

122: indoor fan drive means 124: display means

126: open step detection means 128: speed detection means

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

2 is a block diagram of an operation control device of the air conditioner according to the present invention, the operation control device of the air conditioner according to the present invention, the operation control device of the air conditioner, the power supply means 100 and the operation Operation means 102, control means 104, indoor temperature sensing means 106, indoor heat exchanger temperature sensing means 108, compressor driving means 110, wind direction adjusting means 120, indoor fan motor driving means ( 122), the display means 124, the open step detection means 126, and the speed detection means 128 are comprised.

The power supply means 100 converts a commercial AC voltage supplied from an AC power terminal (not shown) into a predetermined DC voltage required for the operation of the air conditioner, and outputs the AC operation unit. Enter the operation mode (automatic, cooling, dehumidification, blowing, heating) and start / stop of operation, set temperature, set air volume of discharged air and set wind direction.

In addition, the indoor temperature detecting means 106 detects the temperature of the indoor air sucked through the inlet to control the indoor temperature to the temperature set by the user by the driving operation means 102 to perform the operation of the air conditioner. It is to be input to the control means 104, the indoor heat exchanger temperature detecting means 108 detects the pipe temperature of the indoor heat exchanger that is changed at the time of operation of the air conditioner, that is, the refrigerant temperature passing through the indoor heat exchanger do.

In addition, the compressor driving means 110 receives a control signal output from the control means 104 to drive control the compressor 111, and the wind direction adjusting means 120 is controlled by the control means 104. By adjusting the angle of the wind direction control blade 14, the direction of the discharged air is adjusted up and down and left and right, and the indoor fan motor driving means 122 is heat-exchanged air (cold wind) according to the air volume selected by the operation operation means (102) , To control the rotational speed of the indoor fan motor 18 by receiving the control signal output from the control means 104 to blow the warm air) into the room.

In addition, the display means 124 is the operation selection mode (automatic, cooling, dehumidification, blowing, heating) and the set temperature and room temperature input by the operation operation means 102 under the control of the control means 104 And so on.

Then, the opening step detection means 126 detects the opening step of the up and down wind direction control blade to input to the control means 104, the speed detection means 128 detects the rotational speed of the indoor fan motor 18 To the control means 104.

That is, the opening step detecting means 126 detects the opening step of the up-down wind direction adjusting blade 14-1 of the wind direction adjusting blade 14 and inputs the control means 104 as shown in FIG. 3. However, the up and down wind direction control blade 14-1 adjusts the wind direction discharged by changing the angle in multiple stages up and down, and the step of changing the angle of the up and down wind direction adjustment wing 14-1 is 0 to 6 steps As a result, step 0 is a state where the discharge port 13 is completely opened, and step 6 is a state where the discharge port 13 is completely closed.

In addition, the control unit 104 receives the DC voltage output from the power supply unit 100 to initialize the air conditioner, as well as the operation selection signal and the operation start / stop operation input by the operation operation unit 102. A microcomputer that controls the overall operation of the air conditioner according to a signal, and receives the output of the indoor temperature sensing means 106, the open stage sensing means 126, and the speed sensing means 128, and the up-and-down wind direction control blades and the outlet openings. When the dew condensation conditions, the air conditioner is controlled to perform a cooling operation by increasing the discharge air flow by one step.

That is, the control means 104, the air conditioning in the air condition at room temperature or less than the predetermined temperature during the cooling operation, the rotational speed of the indoor fan motor 18 at the same time or less and at the same time up and down wind direction control wing 14-1 When the opening step is a step corresponding to a state in which the discharge port 13 is opened to the minimum, it is determined that the dew condensation condition is performed to increase the discharge air volume by one step to perform the cooling operation.

The operation and effect of the operation control device and the operation control method of the air conditioner configured as described above will be described.

4 is a flowchart of an operation control method of an air conditioner according to the present invention, in which S denotes a step.

First, when power is applied to the air conditioner, the power supply means 100 converts a commercial AC voltage supplied from an AC power terminal (not shown) into a predetermined DC voltage required for driving the air conditioner, thereby driving each circuit and control means ( Output to 104).

When the DC voltage output from the power supply means 100 is applied to the control means 104 as described above, the control means 104 initializes the air conditioner (S1).

Then, the user operates the operation operation means 102 to input an operation start signal to the control means 104, and then selects an operation to set an operation condition (operation mode, set temperature, set air volume, etc.) of the air conditioner. The signal is input to the control means 104. (S2, S3)

That is, it is determined whether the operation start signal is input from the operation operation means 102, and when the operation start signal is not input, the air conditioner is kept in the operation standby state.

Then, when the operation start signal is input from the operation operation means 102, the user inputs an operation selection signal to the control means 104 to operate the operation operation means 102 to set the operation conditions of the air conditioner. Set the operating conditions.

Subsequently, the control means 104 determines whether the operation condition inputted from the driving operation means 102 is a cooling operation, and if it is not the cooling operation, operates the air conditioner according to the set operating condition. (S4, S5)

As a result of the determination in step S4, in the case of the cooling operation, the control means 104 controls the air conditioner to perform the normal cooling operation, and then determines whether the cooling operation is released and ends if it is released. S6, S7)

On the other hand, if the cooling operation is not released as a result of the determination of the step (S7), the control means 104 receives the output of the room temperature sensing means 106 while performing a normal cooling operation, the room temperature is a predetermined temperature (25 ℃) If it is not less than the predetermined temperature (25 ℃) and controls the air conditioner to perform the normal cooling operation (S8).

When the room temperature is equal to or lower than a predetermined temperature (25 ° C.), the control means 104 receives the output of the speed detecting means 128 to determine whether the rotational speed of the indoor fan motor 18 is equal to or less than the predetermined speed (800 RPM). By controlling the air conditioner to perform a normal cooling operation if it is not less than the predetermined speed (800 RPM).

Then, when the rotational speed of the indoor fan motor 18 is less than the predetermined speed (800 RPM), the control means 104 receives the output of the opening step detection means 126 to open the up and down wind direction adjustment blade (14-1). It is determined whether the step is the fifth step or more corresponding to the state in which the discharge port 13 is opened to the minimum, and if it is not the fifth step or more, the air conditioner is controlled to perform normal cooling operation.

On the other hand, when the opening step of the up-and-down wind direction adjustment blade 14-1 is greater than or equal to the fifth step, the control means 104 controls the indoor fan driving means 122 to rotate the speed of the indoor fan motor 18. Cooling operation is performed with one step increased.

That is, during the cooling operation under the condition that the indoor temperature is less than the predetermined temperature (25 ° C.), the rotation speed of the indoor fan motor 18 is equal to or less than the predetermined speed (800 RPM), and the opening step of the up-and-down wind direction adjusting wing 14-1 is discharged. In the case where (13) is the fifth step or more corresponding to the minimum open state, it is determined that dew is formed around the upper and lower wind direction adjusting blades 14-1 and the discharge port 13, and the air volume is increased by one step to increase the indoor fan motor. By driving (18), dew is prevented from forming.

According to the present invention as described above, if the dew condensation around the up and down wind direction control wing and the discharge port during the cooling operation is increased by one step to prevent the dew condensation around the up and down wind direction control wing and the discharge port. It has an effect.

Claims (4)

(Correct) In the operation control apparatus of the air conditioner for controlling the direction of the discharge air flow by controlling the angle of the up and down wind direction control blades and the left and right wind direction adjustment blades, and controlling the rotational speed of the indoor fan motor , Indoor temperature sensing means for detecting the indoor temperature, An opening step detection means for detecting the opening step of the up-and-down wind direction control blade; Speed detecting means for detecting a rotational speed of the indoor fan motor; Receiving the output of the indoor temperature sensing means, the opening stage sensing means and the speed sensing means, the opening stage of the indoor temperature and the up and down wind direction control blade and the rotational speed of the indoor fan motor are determined, and the opening stage of the determined indoor temperature and the up and down wind direction control vane. And comparing the rotational speed of the indoor fan motor with a preset value and determining whether the dew condensation is formed around the upper and lower wind direction control blades and the ejection opening based on the comparison result. And control means for controlling the air conditioner to perform cooling operation. The method of claim 1, The control means, when the cooling speed of the indoor fan motor is a predetermined speed or less at the time of the cooling operation in the room temperature is less than the predetermined temperature and the opening step of the up and down wind direction control blade is a step corresponding to the state that the discharge port is opened to the minimum Operation control apparatus of the air conditioner, characterized in that determined by the dew condensation conditions. (Correct) In the operation control method of the air conditioner to control the direction of the discharge air flow by adjusting the angle of the up and down wind direction control blades and the left and right wind direction adjustment wing, and to control the air flow rate of the discharge air flow by controlling the rotation speed of the indoor fan motor , Determining whether an operation start signal of the air conditioner is input; Setting an operating condition of the air conditioner when an operation start signal of the air conditioner is input; Determining whether the set operating condition is a cooling operation, and if not, operating the air conditioner according to the selected operating condition; Cooling the air conditioner normally if the set operating condition is a cooling operation; Detecting the rotational speed of the indoor temperature and the up-down wind direction control blade and the fan speed of the indoor fan when the operating condition is a cooling operation condition; A determination step of comparing the detected indoor temperature and the up-down wind direction control blade opening step and the rotational speed of the indoor fan motor with a preset value to determine a condition in which dew is formed based on the comparison result; The air conditioner operation control method comprising the step of performing the cooling operation while rotating the indoor fan motor with the air flow increased by one step than the set air flow rate when the conditions around the up and down wind direction control blades and the discharge port. (Correction) The method according to claim 3, The determining step includes determining whether the indoor temperature satisfies a condition below a predetermined temperature, determining whether a rotational speed of the indoor fan motor satisfies a condition below a predetermined speed, and opening the upper and lower wind direction control blades. Determining whether the discharge opening satisfies a condition in which the discharge opening is in a minimum open state, and when the conditions of each step are satisfied, it is determined that dew is formed around the upper and lower wind direction control blades and the discharge opening. Operation control method of the harmony unit.

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