KR101679840B1 - Method for air conditioner - Google Patents

Abstract

The present invention relates to a control method for an air conditioner, and more particularly, to a control method for controlling an air conditioner by adjusting a target discomfort index according to a temperature or a temperature band of the air conditioner space when the unpleasantness index of the air- Unnecessary cooling operation or the like can be prevented within a range that does not hurt the comfort of the user, and the power consumption can be saved.

Description

{METHOD FOR AIR CONDITIONER}

The present invention relates to a control method of an air conditioner, and more particularly, to a control method of an air conditioner that performs cooling operation so that an unpleasantness index reaches a target unpleasantness index.

Generally, not only the temperature but also the humidity influences a person's sense of comfort. Therefore, conventionally, the cooling operation is controlled by using the discomfort index considering the temperature and the humidity together.

Conventionally, the temperature and the humidity of the air conditioning space are detected to calculate the unpleasantness index, and the cooling operation is controlled so that the calculated unpleasantness index reaches the target unpleasantness index. That is, the cooling operation is performed when the unpleasantness index of the air conditioning space is higher than the target unpleasantness index. If the unpleasantness index is lower than the target unpleasantness index, the cooling operation is stopped to keep the air conditioning space pleasant.

The discomfort index is a function of temperature and humidity, which is determined by temperature and humidity. Therefore, even if the discomfort index is the same, the temperature can be in various temperature ranges. For example, if the humidity is high and the temperature is low, the humidity is low, and the temperature is high, the temperature range may be different, but the discomfort index may be the same.

Therefore, even if the unpleasantness index is the same, the temperature may be different. Therefore, when the temperature of the air conditioning space is low, the temperature difference between the surface temperature of the human skin and the temperature of the human skin is cold.

For this reason, in the case of performing the operation control for keeping the air conditioning space at only the target discomfort index using only the discomfort index without considering the temperature difference between the temperature of the air conditioning space and the surface temperature of the human skin as in the prior art, The cooling operation is continued to waste energy due to unnecessary operation.

It is an object of the present invention to provide an air conditioning apparatus and a control method thereof that can prevent unnecessary cooling operation and the like within a range that does not hurt the comfort of the user according to the temperature band of the air conditioning space when the unpleasantness index of the air conditioning space reaches the target unpleasantness index, And to provide a method of controlling the harmonics.

According to an aspect of the present invention, there is provided a control method for an air conditioner, comprising: a cooling operation until an unpleasantness index of the air conditioning space reaches a target unpleasantness index; And controlling the cooling operation by adjusting the target discomfort index according to a temperature band of the air conditioning space.

Here, the temperature range of the air conditioning space is any one of a low temperature region having a first temperature range, an intermediate temperature region having a second temperature range, and a high temperature region having a third temperature range. At this time, the target discomfort index is upwardly adjusted within a range that does not hurt the comfort of the person in the low temperature region and the intermediate temperature region. In addition, the target discomfort index is adjusted to a larger value in the low temperature region than the intermediate temperature region.

Here, in the step of controlling the cooling operation, when the temperature zone of the air conditioning space is the low temperature region, if the unpleasantness index of the air conditioning space is lower than the adjusted target unpleasantness index, the compressor is stopped and the indoor fan is stopped.

Here, the step of controlling the cooling operation may include stopping the compressor when the temperature range of the air conditioning space is the middle temperature range, and if the unpleasantness index of the air conditioning space is lower than the adjusted target unpleasantness index, To control the operation of the indoor fan. At this time, if the humidity of the air conditioning space is 50% or more when the compressor is stopped, the indoor fan is stopped. If the humidity is less than 50%, the indoor fan is operated.

Here, the step of controlling the cooling operation may include maintaining the unpleasantness index of the air conditioning space when the temperature band of the air conditioning space is the high temperature region, and if the unpleasantness index of the air conditioning space is lower than the target unpleasantness index, And the indoor fan is operated.

In another aspect of the present invention, there is provided a control method for an air conditioner, comprising the steps of: performing a cooling operation until an unpleasantness index of the air conditioning space reaches a target unpleasantness index; and controlling the temperature of the air conditioning space when the unpleasantness index reaches the target unpleasantness index And controlling the cooling operation on the basis of the adjusted target discomfort index.

Here, the adjusted target unpleasantness index is the maximum unpleasantness index that can be adjusted upward in a range that does not harm the comfort of the person corresponding to the temperature of the air conditioning space. At this time, the adjusted target discomfort index is adjusted to a larger value as the temperature of the air conditioning space is lower.

The controlling of the cooling operation may include stopping the compressor when the unpleasantness index of the air conditioning space is lower than the adjusted target unpleasantness index and stopping the operation of the indoor fan according to the humidity of the air conditioning space when the compressor stops . At this time, the controlling of the cooling operation stops the indoor fan if the humidity of the air conditioning space when the compressor stops is higher than a predetermined humidity, and operates the indoor fan when the humidity is lower than the predetermined humidity.

The control of the cooling operation may include stopping the compressor when the unpleasantness index of the air conditioning space is lower than the adjusted target unpleasantness index and stopping the operation of the indoor fan according to the temperature of the air conditioning space when the compressor stops . At this time, the indoor fan is stopped when the temperature of the air conditioning space when the unpleasant index of the air conditioning space reaches the target discomfort index is lower than a predetermined temperature, and the indoor fan is operated when the temperature is higher than the preset temperature.

According to another aspect of the present invention, there is provided a control method for an air conditioner, comprising: determining whether a target air-quenching index has been reached by cooling an air conditioning space; and determining whether the target discomfort index can be changed And controlling the cooling operation by adjusting the target discomfort index if the target discomfort index can be changed.

The step of determining whether or not the target discomfort index is changeable may include determining whether the target discomfort index is changeable based on the temperature of the air conditioning space when the unpleasantness index of the cooperating space reaches the target discomfort index or a predetermined temperature band, It is determined whether or not the change is possible. At this time, the target unpleasantness index to be changed is adjusted upward based on the temperature of the air conditioning space when the unpleasantness index of the air conditioning space reaches the target unpleasant index, and the lower the temperature of the air conditioning space, do. The target unpleasantness index is adjusted upward when the temperature range of the air conditioning space when the unpleasantness index of the air conditioning space reaches the target unpleasant index is in the low temperature region and the intermediate temperature region, Is increased to a large value.

According to the present invention, by controlling the cooling operation by adjusting the target discomfort index according to the temperature band of the air conditioning space when the unpleasant index of the air conditioning space reaches the target unpleasant index, unnecessary cooling operation And it is possible to save power consumption.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. The present invention can be applied to various types of indoor units. Hereinafter, an indoor unit having a side suction port and a side discharge port will be described.

As shown in FIG. 1, the indoor unit of the air conditioner according to the embodiment of the present invention includes a box-shaped main body 10 whose front surface is opened.

A side suction port 11 for sucking room air is formed at the lower side of both sides of the main body 10.

A side discharge port 14 for discharging the conditioned air blown by the indoor fan 13 to the room is provided at a position adjacent to the indoor heat exchanger 12 on both side surfaces of the main body 10 in a vertical direction And a front discharge port 15 is formed in the front of the main body 10 in a horizontal direction. The louvers 16 and 17 are rotatably provided on the respective discharge ports 14 and 15 to adjust the rotation angle of the louver 24 to open and close the discharge ports 14 and 15, do.

An indoor heat exchanger (12) for heat exchange with indoor air is installed in an upper portion of the main body (10). The indoor heat exchanger (12) is installed so as to have a predetermined inclination inside the upper space so that heat can be exchanged while air passing through the interior passes. An indoor fan 13 for blowing cool air, which has been heat-exchanged by the indoor heat exchanger 12, is installed in the lower portion of the main body 10 at a position corresponding to the side air inlet 11. The indoor fan 13 is formed on the upper side of both sides of the main body 10 through the upper indoor heat exchanger 12 by the air sucked into the main body 10 through the side suction holes 11 formed on the lower side of both side surfaces of the main body 10 So as to flow toward the side discharge port 14 side.

Accordingly, the indoor fan 13 sucks the indoor air through the side suction port 11 and blows it to the upper indoor heat exchanger 12, and the indoor heat exchanger 12 performs heat exchange with the blown indoor air, Cool air generated by absorbing heat from the air is discharged to the side discharge port 14 and / or the front discharge port 15 to cool the room.

2, the air conditioner according to the embodiment of the present invention having the above-described indoor unit includes a compressor 20 for compressing refrigerant, an outdoor heat exchanger 21 functioning as a condenser to condense the refrigerant, An electrically operated expansion valve 22 for expanding the refrigerant to a low temperature and a low pressure, and an indoor heat exchanger 12 for functioning as an evaporator to evaporate the refrigerant are connected by a refrigerant pipe to form one closed circuit.

The gas refrigerant discharged from the compressor 20, which has been converted into high temperature and high pressure, flows in the direction of the arrow and passes through the inside of the outdoor heat exchanger 21 functioning as a condenser, and the outside of the outdoor heat exchanger 21 The refrigerant is converted into a liquid refrigerant at room temperature and high pressure after being discharged to the outside air passing therethrough, and then is changed into a low-temperature and low-pressure liquid refrigerant while passing through the motor-operated expansion valve (22). The refrigerant changed into the low temperature and low pressure liquid absorbs heat from the room air passing through the outside of the indoor heat exchanger 12 by the indoor fan 13 while passing through the indoor heat exchanger 12 and is converted into a low pressure gas, 20), the indoor air is cooled to cool the room.

The compressor applied to the embodiment of the present invention may be a fixed compressor having a constant compression capacity or a variable capacity compressor capable of varying the compression capacity. One or more capability fixed compressors, or more than one capability variable compressor. It is possible to have both a fixed compressor and a variable variable compressor. There are two types of variable-capacity compressors: a variable-speed compressor and a pulse-width-modulated compressor. The compressor of the variable speed system changes the compression capacity of the compressor by controlling the rotation speed of the motor by changing the frequency of the current applied to the compressor through the inverter control. The compressor of the pulse width modulation type has a loading time And a duty control signal for determining an unloading time at which the refrigerant is not discharged.

As shown in FIG. 3, the air conditioner according to the embodiment of the present invention having the above-described configuration includes a controller 30 for performing overall control.

An input unit 31, a temperature sensing unit 32, a humidity sensing unit 33 and the like are electrically connected to the input side of the control unit 30 and a compressor driving unit 34 is electrically connected to the output side. The storage unit 35 is electrically connected to the input / output side of the control unit.

The input unit 31 is provided with an operation mode (automatic, cooling, dehumidification, comfort, etc.) of the air conditioner and a plurality of function keys as well as an operation / stop key .

The control unit 30 is a microcomputer that controls the entire operation of the air conditioner in accordance with the operation signal input by the input unit 31. The control unit 30 performs cooling operation to control the operation of the air conditioner And the cooling operation is controlled by adjusting the target discomfort index based on the recognized temperature of the air-conditioning space. The temperature of the air-conditioning space when the calculated discomfort index reaches the target discomfort index is recognized.

The temperature sensing unit 32 is installed in a space between the side inlet 11 formed in the indoor unit body 10 and the indoor heat exchanger 12. The temperature sensing unit 32 senses the temperature of the air in the air-conditioning space sucked through the side suction port 11 and outputs the sensed temperature to the control unit 30.

The humidity sensing portion 33 is installed in a space between the side inlet 11 formed in the indoor unit body 10 and the indoor heat exchanger 12. The humidity sensing unit 32 senses the humidity of air in the air-conditioning space sucked through the side suction port 11 and outputs the humidity to the control unit 30.

The compressor driving unit 34 determines whether the unpleasantness index calculated from the temperature of the air conditioning space sensed through the temperature sensing unit 32 and the temperature of the air conditioning space sensed through the humidity sensing unit 33 during the cooling operation reaches the target discomfort index The control unit 30 receives the control signal from the control unit 30 and controls the compressor 20 to be turned on or off.

The storage unit 35 is adapted to correspond to each temperature or temperature band of the air conditioning space when the unpleasantness index reaches the target unpleasantness index so as to prevent unnecessary cooling operation or the like within a range that does not harm the user's comfort, The discomfort index to be adjusted is stored.

In addition, the air conditioner according to the embodiment of the present invention includes a display unit 36 for displaying an operation state and an unpleasant index of the air conditioning space during a cooling operation, a wind direction adjusting unit 37 and an indoor fan driving unit 38, And these are electrically connected to the output side of the control unit 30. [

When the user instructs the cooling operation inputted through the input unit 31, the display unit 36 displays the operation state and the discomfort index of the air conditioning space.

The airflow direction control unit 37 controls the louvers 16 and 17 so as to adjust the direction of the discharged air upward or downward or right and left so that the air discharged through the side discharge port 14 and the front discharge port 15 is uniformly distributed throughout the air- And controls the driving.

The indoor fan driving unit 38 receives the control signal outputted from the control unit 30 according to the air volume set by the user by the input unit 31 and controls the indoor fan 13) to control the operation of the indoor fan (13). The indoor fan 13 is capable of varying the speed and the indoor fan driving unit 38 adjusts the number of rotations of the indoor fan 13 according to the signal of the control unit 30 to generate various air volumes such as turbo volume, I will.

Accordingly, when the user operates the input unit 31 to command the cooling operation, first, the control unit 30 opens the discharge ports 14 and 15 through the frieze adjustment unit 37 and then drives the compressor 20 The air conditioning space is cooled by the cooling cycle.

The unpleasantness index of the air-conditioning space is calculated from the temperature and humidity of the air-conditioned space detected through the temperature sensing unit 32 and the humidity sensing unit 33 during the cooling of the air conditioning space, and when the calculated unpleasantness index reaches the target discomfort index The target discomfort index is adjusted or maintained at a predetermined discomfort index according to the temperature or the temperature zone of the air conditioning space at that time. Accordingly, when the temperature or the temperature zone of the air conditioning space when the discomfort index reaches the target discomfort index is considered to be the temperature of the skin surface of the person, when the person is in the space of the same temperature and humidity in the summer iron environment, The target discomfort index is increased and the cooling operation is performed relatively weakly so that unnecessary waste of power consumption can be saved.

Generally, the discomfort index Di is calculated by the following equation [1].

DI = 9 / 5Tr - 0.55 (1-Hr) (9 / 5Tr - 26) +32 ---- [

Here, Tr [° C] is the dry bulb temperature, Hr [g / kg] is the relative humidity, the dry bulb temperature is the temperature sensed through the temperature sensing part 32 and the relative humidity is sensed through the humidity sensing part 33 Lt; / RTI > It is generally known that most people are uncomfortable when the discomfort index is 85% or more, and most people do not feel uncomfortable when the discomfort index is below 70%.

FIG. 4 shows a concept of adjusting the target discomfort index according to the temperature of the air conditioning space when the discomfort index reaches the target discomfort index in the air conditioner according to the embodiment of the present invention. FIG. 5 shows a concept of adjusting the target discomfort index DI_3 to a new target discomfort index DI_1 in FIG. For convenience of explanation, it is defined that the target discomfort index is set to DI_3 at the start of cooling operation.

Referring to FIGS. 4 and 5, when the cooling operation is performed, the discomfort index of the air conditioning space gradually decreases to reach the target discomfort index DI_3. At this time, the fact that the unpleasantness index of the air conditioning space reaches the target discomfort index DI_3 means that the point P0 on the unpleasantness index of the air conditioning space when starting the cooling operation is the point P1, P2, or P3 on the target discomfort index DI_3 ≪ / RTI > The discomfort index is a function of temperature and humidity, which is determined by temperature and humidity. Therefore, even if the discomfort index is the same, the temperature can be in various temperature ranges. For example, it may be one of points P1, P2 and P3 having the same discomfort index but different temperature value and humidity value. Point P1 has a temperature value of T1 and a humidity value of H1, a point P2 is T2 having a temperature value higher than T1 and a humidity value of H2 lower than H1, a point P3 is a temperature value higher than T2 and a humidity value is H2 Low H3.

For example, when the temperature value T1 of the point P1 is a low value, the temperature difference between the surface temperature of the human skin and the surface temperature of the human skin may be too cold. For example, a person's skin surface temperature is comfortable at 33 degrees to 34 degrees, but feels cold when the temperature is lower than 33 degrees. The temperature T1 of the point P1 is lower than the temperature of the human skin surface by 33 degrees People feel cold.

Therefore, when the temperature value of the point P1 is low, the target discomfort index is adjusted so that a person can not feel cold, unnecessary operation is prevented, and power consumption is saved. That is, the point P1 on the discomfort index DI_3 is shifted to the point P1 'on the new discomfort index having the higher temperature T1' by raising the target discomfort index DI_3 to the new target discomfort index DI_1. At this time, the lower the temperature value of the point P1 is, the higher the target discomfort index has to be increased.

As shown in Fig. 6, since the operation of the compressor is stopped until the discomfort index of the air conditioning space reaches the upwardly adjusted target discomfort index DI_1, the power consumption can be saved.

Hereinafter, a process of controlling the cooling operation by adjusting the target discomfort index according to the temperature zone of the air conditioning space when the unpleasantness index of the air conditioning space reaches the target discomfort index in the air conditioner according to the embodiment of the present invention will be described.

Referring to FIG. 7, first, the compressor 20 is driven in operation mode 100 at the start of operation. At this time, all of the compressors 20 are operated so that the air conditioner is operated with the maximum capacity, and when the compressor 20 is a variable capacity compressor, the compressor is driven at the maximum output. The compressor (20) is driven and the indoor fan (13) is operated as the turbo air having the maximum direction to cool the air conditioning space quickly.

After the compressor 20 is driven, the temperature and humidity of the air conditioning space are sensed in the operation modes 110 and 120, respectively, and the discomfort index of the air conditioning space is calculated in the operation mode 130. At this time, the unpleasantness index of the air conditioning space is calculated by the above-described formula [1].

After calculating the discomfort index of the air conditioning space, it is determined whether the discomfort index DI of the air conditioning space has reached the target discomfort index DI_ref (for example, 70) in the operation mode 140. If the unpleasantness index DI of the air conditioning space does not reach the target discomfort index DI_ref as a result of the determination in the operation mode 140, the operation mode 100 is moved to continue the following operation mode.

On the other hand, when the unpleasantness index DI of the air conditioning space reaches the target unpleasantness index DI_ref as a result of the determination in the operation mode 140, the compressor 20 is stopped in the operation mode 150 and the discomfort index DI ) Reaches the target discomfort index (DI_ref). At this time, the temperature of the air conditioning space is sensed through the temperature sensing unit 32 or the temperature when the unpleasantness index DI of the air conditioning space reaches the target discomfort index DI_ref is recognized and confirmed.

After confirming the temperature of the air conditioning space when the unpleasantness index DI of the air conditioning space reaches the target discomfort index DI_ref, the temperature T of the air conditioning space in the operation modes 170 and 171 is set to a predetermined temperature range (T? T1 < T? T2, T > T2). That is, in the operation mode 170, it is determined whether the temperature T of the air conditioning space exceeds a preset first temperature T1. If the temperature of the air conditioning space is equal to or less than the preset first temperature T1 as a result of the determination in the operation mode 170, It is determined that the temperature zone of the air conditioning space is the first temperature zone (T? T1) (for example, T1 is 24 占 폚) and the target discomfort index is DI_1 (for example, 74) at D_ref . In this case, the first temperature zone (T? T1) is a low-temperature region in which the surface temperature of the skin can drop by more than an appropriate temperature of 33 to 34 degrees in a long-term human environment in summer iron environment.

On the other hand, if it is determined in operation mode 170 that the temperature T of the air conditioning space exceeds the preset first temperature T1, it is determined in operation mode 171 whether the temperature T of the air conditioning space is equal to or less than the preset second temperature T2 . If the temperature of the air conditioning space is equal to or less than the predetermined second temperature T2 as a result of the determination in the operation mode 171, the temperature zone of the air conditioning space is set to the second temperature zone T1 (T? T2) Is set to 26 and the target discomfort index is increased from D_ref (for example, 70) to DI_2 (for example, 72) in the operation mode 190. At this time, the second temperature zone T1 < Considering the surface temperature of the skin, the surface temperature of the skin is lower than 33 ° C to 34 ° C for a long period of time in a summer iron environment, but it is a medium temperature region higher than the first temperature zone (T? T1).

If the temperature of the air conditioning space exceeds the preset second temperature T2 as a result of the determination in the operation mode 171, the temperature zone of the air conditioning space is determined as the third temperature zone (T> T2) Is adjusted from D_ref (for example, 70) to DI_3 (for example, 70). Considering the surface temperature of the human skin, it is preferable that the surface temperature of the skin is between 33 ° C and 34 ° C for a long period of time in a summer iron environment (T> T2) (for example, T2 is 26 ° C) The target discomfort index DI_ref may be equal to the adjusted target discomfort index DI_3, in which case the present target discomfort index is maintained. It is difficult to maintain the downwardly adjusted target discomfort index even if the target discomfort index is downgraded because of the ability to maintain the target discomfort index downward. In the unpleasantness indexes lower than the certain discomfort index (for example, 70) However, in some cases it is also possible to lower the target discomfort index.

On the other hand, as shown in FIG. 8, after the temperature of the air conditioning space is in the low temperature region of the first temperature range (T? T1), the target discomfort index is adjusted upward from D_ref to DI_1. In the operating mode 181, And calculates the discomfort index of the air conditioning space in the operation mode 182. [

After calculating the discomfort index of the air conditioning space, it is determined whether or not the discomfort index DI of the air conditioning space is equal to or less than the adjusted target discomfort index DI_1 in the operation mode 183. If the unpleasantness index DI of the conditioned space is equal to or less than the adjusted target discomfort index DI_ 1 as a result of the determination in the operation mode 183, the compressor 20 is stopped in the operation mode 184. Accordingly, the compressor is stopped until the uncomfortable index DI of the air conditioning space reaches the adjusted target discomfort index DI_1, thereby saving power consumption. In addition, the compressor 20 is stopped and the indoor fan 13 is stopped in the operation mode 185. [ This is because when the compressor is stopped, the humidity of the air conditioning space is high in the low temperature region, so that the indoor fan 13 is stopped like the compressor 20 to prevent the air conditioning space from being humidified while the operation of the compressor 20 is stopped do.

If the unpleasantness index DI of the air conditioning space exceeds the adjusted target discomfort index DI_1 as a result of the determination in the operation mode 183, the compressor 20 is driven in the operation mode 186 and the indoor fan 13 is operated in the operation mode 187 It works as a phalanx. At this time, the compressor 20 is driven to the normal output, not the maximum output. In this case, rather than driving the compressor and the indoor fan to the maximum to reach the newly changed target discomfort index, the driving discomfort of the compressor and the indoor fan is weakened to reach the target discomfort index because the state is close to the target discomfort index This is because it is advantageous to prevent frequent on / off driving of the compressor and the indoor fan.

After the operation mode 185 or the operation mode 187 is performed, the operation mode 181 is performed to continue the following operation mode.

9, since the temperature of the air conditioning space is an intermediate temperature region having a second temperature range (T1 <T? T2), the target discomfort index is adjusted from D_ref to DI_2, and then, in the operation mode 191, Senses the temperature and humidity, and calculates the unpleasantness index of the air conditioning space in the operation mode 192.

After calculating the discomfort index of the air conditioning space, it is determined whether the discomfort index DI of the air conditioning space is equal to or less than the adjusted target discomfort index DI_2 in the operation mode 193. If the humidity in the air conditioning space is lower than a predetermined humidity Href (for example, 50% or more) in the operation mode 194, if the unpleasantness index DI of the air conditioning space is equal to or less than the adjusted target unpleasantness index DI_2 as a result of the determination in the operation mode 193, ).

If the humidity of the air conditioning space is equal to or higher than the predetermined humidity as a result of the determination in the operation mode 194, the compressor 20 is stopped in the operation mode 195 and the indoor fan 13 is stopped in the operation mode 196. At this time, the reason why the indoor fan 13 is stopped is to prevent the air conditioning space from being humidified because the humidity of the air conditioning space is high when the compressor is stopped.

If the humidity of the air conditioning space is less than the preset humidity as a result of the determination of the operation mode 194, the compressor 20 is stopped in the operation mode 197 and the indoor fan 13 is operated as the weak wind in the operation mode 198. At this time, the reason why the indoor fan 13 is operated as the weak wind is that the humidity of the air conditioning space is relatively low when the compressor is stopped, so that the air conditioning space is humidified so that the air conditioning space is not severely dried.

If the unpleasantness index DI of the conditioned space exceeds the adjusted target discomfort index DI_1 as a result of the determination in the operation mode 193, the compressor 20 is driven in the operation mode 199 and the indoor fan 13 is operated in the operation mode 200, . At this time, the compressor 20 is driven to the normal output, not the maximum output.

10, after the temperature of the air conditioning space is in the high temperature region of the third temperature range (T > T2), the target discomfort index is adjusted from D_ref to DI_3, and then the temperature and humidity of the air- And calculates the discomfort index of the air conditioning space in the operation mode 302.

After calculating the discomfort index of the air conditioning space, it is determined whether or not the discomfort index DI of the air conditioning space is equal to or less than the adjusted target discomfort index DI_3 in the operation mode 303. If the unpleasantness index DI of the air conditioning space is equal to or less than the adjusted target discomfort index DI_3 as a result of the determination in the operation mode 303, the compressor 20 is stopped in the operation mode 304 and the indoor fan 13 is stopped in the operation mode 305 It works as a phalanx. At this time, the reason why the indoor fan 13 is operated as a weak wind is that the humidity of the air conditioning space is low, so that even when the indoor fan 13 is operated as a weak wind and the operation of the compressor 20 is stopped, So that the air conditioning space is not severely dried.

On the other hand, if it is determined in operation mode 303 that the unpleasantness index DI of the conditioned space exceeds the adjusted target discomfort index DI_3, the compressor 20 is driven in the operation mode 306 and the indoor fan 13 is operated in the operation mode 307. [ . At this time, the compressor 20 is driven to the normal output, not the maximum output.

Hereinafter, a process of controlling the cooling operation by adjusting the target discomfort index based on the temperature of the air conditioning space when the unpleasantness index of the air conditioning space reaches the target unpleasantness index will be described as another embodiment of the present invention.

Referring to FIG. 11, first, the compressor 20 is driven in operation mode 400 at the start of operation. At this time, all of the compressors 20 are operated so that the air conditioner is operated with the maximum capacity, and when the compressor 20 is a variable capacity compressor, the compressor is driven at the maximum output. The compressor (20) is driven and the indoor fan (13) is operated as the turbo air of the maximum direction to cool the air conditioning space quickly.

After the compressor 20 is driven, the temperature and humidity of the air conditioning space are sensed in the operation modes 410 and 420, respectively, and the discomfort index of the air conditioning space is calculated in the operation mode 430. At this time, the unpleasantness index of the air conditioning space is calculated by the above-described formula [1].

After calculating the discomfort index of the air conditioning space, it is determined whether the discomfort index DI of the air conditioning space has reached the target discomfort index DI_ref in the operation mode 440. If the unpleasantness index DI of the air conditioning space does not reach the target discomfort index DI_ref as a result of the determination in the operation mode 440, the operation mode 400 is moved to continue the following operation mode.

On the other hand, when the unpleasantness index DI of the air conditioning space reaches the target unpleasantness index DI_ref as a result of the determination in the operation mode 440, the compressor 20 is stopped in the operation mode 450 and the discomfort index DI ) Reaches the target discomfort index (DI_ref). At this time, the temperature of the air conditioning space is sensed through the temperature sensing unit 32 or the temperature when the unpleasantness index DI of the air conditioning space reaches the target discomfort index DI_ref is recognized and confirmed.

After confirming the temperature of the air conditioning space when the unpleasant index DI of the air conditioning space reaches the target discomfort index DI_ref, it checks the changeable discomfort index DI corresponding to the temperature T of the air conditioning space in the operation mode 470 do. At this time, a discomfort index corresponding to the temperature of the air conditioning space is preset in the storage unit 36. [ Here, the uncomfortable index which can be changed in accordance with the temperature (T) of the air conditioning space means the maximum unpleasantness index which can be adjusted upward in a range that does not harm the comfort of the person in consideration of the skin surface temperature of a person. The discomfort index which can be adjusted upward in a normal temperature region is large and the discomfort index which can be adjusted upward in a low temperature region is small.

After confirming the discomfort index DI corresponding to the temperature T of the air conditioning space, the target discomfort index is adjusted from D_ref to DI 'in the operation mode 480.

After adjusting the target discomfort index, the temperature and humidity of the air conditioning space are sensed in the operation mode 490, and the discomfort index of the air conditioning space is calculated in the operation mode 500.

After calculating the discomfort index of the air conditioning space, it is determined whether the unpleasantness index DI of the air conditioning space is equal to or less than the adjusted target discomfort index DI 'in the operation mode 510. If the unpleasantness index DI of the conditioned space is less than the adjusted target discomfort index DI 'as a result of the determination in the operation mode 510, the compressor 20 is stopped in the operation mode 520. Accordingly, the compressor is stopped until the unpleasant index DI of the air conditioning space reaches the adjusted target discomfort index DI ', thereby saving power consumption. At this time, the compressor 20 can be stopped and the operation of the indoor fan 13 can be controlled. The indoor fan 13 is operated in consideration of the humidity of the air conditioning space. That is, when the humidity of the air conditioning space is high, the indoor fan 13 is stopped to prevent the air conditioning space from being humidified while the operation of the compressor 20 is stopped. When the humidity of the air conditioning space is low, So as to humidify the air conditioning space while the operation of the compressor 20 is stopped. Alternatively, it is possible to determine whether the indoor fan is driven in a stopped state of the compressor according to a predetermined reference temperature band or not in comparison with a specific reference temperature without reference to humidity. That is, when the temperature at the time when the target discomfort index is reached is lower than the reference temperature or when the temperature is in the low temperature range, the indoor humidity is high and the indoor fan is not driven. When the temperature at the time of reaching the target discomfort index is higher than the reference temperature Or the indoor humidity is low in the high temperature region, so that the indoor fan may be driven. (See Fig. 4)

On the other hand, if the unpleasantness index DI of the air conditioning space exceeds the adjusted target unpleasantness index DI 'as a result of the determination in the operation mode 510, the compressor 20 is operated in the operation mode 530.

Hereinafter, it is determined whether the target air temperature has reached the target air temperature by cooling the air conditioning space. If the target air temperature has reached the target air temperature, it is determined whether the target air temperature can be changed according to the temperature of the air conditioning space. Up operation to control the cooling operation will be described.

Referring to FIG. 12, first, the compressor 20 is driven in operation mode 600 at the start of operation. At this time, all of the compressors 20 are operated so that the air conditioner is operated with the maximum capacity, and when the compressor 20 is a variable capacity compressor, the compressor is driven at the maximum output. The compressor (20) is driven and the indoor fan (13) is operated as the turbo air of the maximum direction to cool the air conditioning space quickly.

After the compressor 20 is driven, the temperature and humidity of the air conditioning space are sensed in the operation modes 610 and 620, respectively, and the discomfort index of the air conditioning space is calculated in the operation mode 630. At this time, the unpleasantness index of the air conditioning space is calculated by the above-described formula [1].

After calculating the discomfort index of the air conditioning space, it is determined whether the discomfort index DI of the air conditioning space has reached the target discomfort index DI_ref in the operation mode 640. If the unpleasantness index DI of the air conditioning space does not reach the target discomfort index DI_ref as a result of the determination in the operation mode 640, the operation mode 600 is continued to perform the following operation mode.

On the other hand, if the unpleasantness index DI of the air conditioning space reaches the target discomfort index DI_ref as a result of the determination in the operation mode 640, the compressor 20 is stopped in the operation mode 650 and the discomfort index DI ) Reaches the target discomfort index (DI_ref). At this time, the temperature of the air conditioning space is sensed through the temperature sensing unit 32 or the temperature when the unpleasantness index DI of the air conditioning space reaches the target discomfort index DI_ref is recognized and confirmed.

After confirming the temperature of the air conditioning space when the unpleasant index DI of the air conditioning space reaches the target discomfort index DI_ref, it is determined whether a change of the target discomfort index is necessary in the operation mode 670. [ This can be confirmed by checking the temperature of the air conditioning space. For example, if the temperature of the air conditioning space is the above-mentioned high temperature region, it is determined that the target discomfort index need not be changed. If the air conditioning space temperature is in the low temperature region and the intermediate temperature region described above,

As a result of the determination in operation mode 670, when it is determined that the target discomfort index needs to be changed, the changed target discomfort index corresponding to the temperature (T) And the cooling operation is controlled using the target discomfort index changed in the operation mode 690. Here, the target discomfort index to be changed may be set to a constant value according to the temperature band (see Fig. 7 embodiment) or may be set to an individual value according to the temperature (see Fig. 11 embodiment).

On the other hand, if it is determined that the change of the target discomfort index is not necessary as a result of the determination in the operation mode 670, the current target discomfort index is maintained in the operation mode 700, and the current cooling operation is maintained in the operation mode 710. Here, the operation of the indoor fan when the compressor is stopped can be controlled according to the temperature range in the humidity state of the indoor space or the target discomfort index as in the previous embodiment.

1 is a perspective view illustrating an indoor unit of an air conditioner according to an embodiment of the present invention.

2 is a refrigerant cycle diagram of an air conditioner according to an embodiment of the present invention.

3 is a graph showing the respective discomfort indexes according to temperature and humidity in the air conditioner according to the embodiment of the present invention.

4 is a conceptual diagram for explaining the concept of adjusting the target discomfort index according to the temperature of the air conditioning space when the discomfort index reaches the target discomfort index in the air conditioner according to the embodiment of the present invention.

FIG. 5 is a conceptual diagram for explaining a concept of upwardly adjusting the target discomfort index in FIG.

6 is a view for explaining the operation of the compressor according to the target discomfort index adjusted upward in the air conditioner according to the embodiment of the present invention.

FIG. 7 illustrates a process of controlling the cooling operation by adjusting the target discomfort index based on the temperature band of the air conditioning space when the unpleasantness index of the air conditioning space reaches the target unpleasant index in the air conditioner according to the embodiment of the present invention Fig.

FIG. 8 is a control flowchart for explaining a method of controlling the cooling operation by adjusting the unpleasantness index when the temperature of the air conditioning space when the temperature of the air conditioning space reaches the target discomfort index in the first temperature band in FIG.

Fig. 9 is a control flowchart for explaining a method of controlling the cooling operation by adjusting the unpleasantness index when the temperature of the air conditioning space when the temperature of the air conditioning space reaches the target discomfort index in Fig. 7 is the second temperature band.

10 is a control flowchart for explaining a method of controlling the cooling operation by adjusting the unpleasantness index when the temperature of the air conditioning space when the temperature of the air conditioning space reaches the target discomfort index in the third temperature band in FIG.

FIG. 11 illustrates a process of controlling the cooling operation by adjusting the target discomfort index based on the temperature of the air conditioning space when the discomfort index of the air conditioning space reaches the target discomfort index in the air conditioner according to the embodiment of the present invention Fig.

12 is a flowchart for explaining a process of controlling the cooling operation by adjusting whether the target discomfort index is changeable in the air conditioner according to the embodiment of the present invention, FIG.

[Description of the Reference Numerals]

30: control unit 31: input unit

32: temperature sensing unit 33: humidity sensing unit

34: compressor driving part 35:

36: display portion 37: wind direction adjusting portion

38: Indoor fan drive

Claims (19)

Performing cooling operation until the unpleasantness index of the air conditioning space reaches the target unpleasant index; Confirming a temperature zone of the air conditioning space when the discomfort index reaches the target discomfort index; Controlling the cooling operation on the basis of the adjusted target discomfort index by checking the unpleasantness index to be adjusted corresponding to the identified temperature band, adjusting the target discomfort index based on the unpleasantness index to be adjusted, Wherein the identified temperature range of the air conditioning space is an intermediate temperature region having a low temperature region having a first temperature range and a second temperature range having a temperature higher than the first temperature range and a temperature higher than the second temperature range Temperature region having a third temperature range, Wherein the step of controlling the cooling operation includes: If the temperature zone of the identified air-conditioning space is in the low-temperature region, stopping the compressor and stopping the indoor fan if the unpleasantness index of the air-conditioning space is lower than the adjusted target unpleasantness index, When the temperature zone of the identified air-conditioning space is the middle temperature region, if the unpleasantness index of the air-conditioning space is lower than the adjusted target unpleasantness index, the compressor is stopped and the operation of the indoor fan is controlled according to the humidity of the air- Wherein the control unit controls the air conditioner. delete 2. The method according to claim 1, wherein adjusting the target discomfort index comprises: And adjusting the target discomfort index upward if the determined temperature range is the low temperature region and the intermediate temperature region. 4. The method according to claim 3, wherein the upward adjustment of the target discomfort index comprises: And adjusting the air temperature to a higher value in the low temperature region than the intermediate temperature region. delete delete 2. The indoor fan according to claim 1, wherein the operation of the indoor fan is controlled when the temperature zone of the identified air- Wherein the indoor fan is stopped when the humidity of the air conditioning space is 50% or more when the compressor is stopped, and the indoor fan is operated when the humidity is less than 50%. The method according to claim 1, Wherein the step of controlling the cooling operation includes maintaining the unpleasantness index of the air conditioning space at the target unpleasantness index when the temperature band of the air conditioning space is in the high temperature region and if the unpleasantness index of the air conditioning space is lower than the target discomfort index And stops the compressor and operates the indoor fan. Performing cooling operation until the unpleasantness index of the air conditioning space reaches the target unpleasant index; Confirming the temperature of the air conditioning space when the unpleasantness index reaches the target unpleasantness index, checking the unpleasantness index to be adjusted corresponding to the identified temperature, and adjusting the target unpleasantness index based on the unpleasantness index to be adjusted; And controlling the cooling operation based on the adjusted target discomfort index, The control of the cooling operation may include stopping the compressor when the unpleasantness index of the air conditioning space is lower than the adjusted target unpleasantness index and controlling the operation of the indoor fan according to the humidity of the air conditioning space when the compressor is stopped , &Lt; / RTI &gt; Controlling the operation of the indoor fan includes: And stopping the indoor fan if the humidity of the air conditioning space when the compressor stops is higher than a preset humidity and operating the indoor fan if the humidity is lower than the predetermined humidity. 10. The method of claim 9, Wherein the discomfort index to be adjusted is a maximum discomfort index that can be adjusted upward within a certain range in accordance with the temperature of the air conditioning space. 11. The method of claim 10, wherein adjusting the discomfort index comprises: And adjusting the temperature of the air conditioning space to a larger value as the temperature of the air conditioning space is lower. delete delete Performing cooling operation until the unpleasantness index of the air conditioning space reaches the target unpleasant index; Confirming a temperature of the air conditioning space when the unpleasantness index reaches the target unpleasantness index, confirming an unpleasantness index to be adjusted corresponding to the identified temperature, and adjusting the target unpleasantness index based on the unpleasantness index to be adjusted; And controlling the cooling operation based on the adjusted target discomfort index, The control of the cooling operation may include stopping the compressor when the unpleasantness index of the air conditioning space is lower than the adjusted target unpleasantness index and controlling the operation of the indoor fan according to the temperature of the air conditioning space when the compressor is stopped , &Lt; / RTI &gt; Controlling the operation of the indoor fan includes: And stopping the indoor fan when the temperature of the air conditioning space when the temperature of the air conditioning space when the unpleasant index of the air conditioning space reaches the target discomfort index is lower than a predetermined temperature and operating the indoor fan if the temperature is higher than the predetermined temperature Control method of air conditioner. delete Determining whether the air conditioning space has been cooled to reach a target discomfort index; Determining whether the target discomfort index can be changed when the target discomfort index has been reached; And controlling the cooling operation by adjusting the target discomfort index if the target discomfort index can be changed, Wherein the step of determining whether the target discomfort index is changeable includes determining that the target discomfort index can be changed if the temperature of the air conditioning space is a temperature outside a preset temperature band, Wherein the target unpleasantness index is adjusted upwardly based on the temperature of the air conditioning space when the unpleasantness index of the air conditioning space reaches the target unpleasantness index and is adjusted to a larger width as the temperature of the air conditioning space is lower, And controlling the operation of the indoor fan according to the temperature of the air conditioning space when the compressor is stopped when the unpleasant index of the air conditioning space is lower than the adjusted target discomfort index Way. delete delete 17. The method of claim 16, A low temperature region and a high temperature region having a temperature range higher than the intermediate temperature region and a high temperature region having a temperature range higher than the low temperature region, The target uncomfortable index is adjusted upward when the temperature of the air conditioning space when the unpleasantness index of the air conditioning space reaches the target unpleasant index belongs to the low temperature region and the intermediate temperature region, Lt; RTI ID = 0.0 &gt; 1, &lt; / RTI &gt;

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