KR20060002528A - Controling method for discharged aircurrent in indoor-unit of air conditioner - Google Patents

Abstract

The present invention relates to an indoor unit for an air conditioner, and more particularly, to a method for controlling the discharge airflow of an indoor unit for an air conditioner, by effectively controlling a vane that controls the wind direction of the air discharged from the indoor unit to the room. It is about.

To this end, the present invention is provided in the discharge port of the indoor unit of the air conditioner is provided with a vane for controlling the discharge angle of the discharge air up / down by rotating upward or downward toward the maximum upward angle or maximum downward angle from the initial position In the conditioner, the vane up / down rotation pattern has a frequency characteristic of airflow discharged to the room by continuously repeating a high speed rotation pattern with a high vane rotation speed and a low speed rotation pattern with a low vane rotation speed. It provides a discharge airflow control method of the indoor unit for an air conditioner, characterized by having a slope of.

Further, the method of controlling the discharge airflow of an indoor unit for an air conditioner, further comprising stopping the rotation of the vane for a predetermined time every time a rotation pattern consisting of the high speed rotation pattern and the low speed rotation pattern is repeated a predetermined period. to provide.

Air Conditioner, Vane, Discharger, 1 / f

Description

Controlling method for discharged air current in indoor-unit of air conditioner

1 is a configuration diagram briefly showing the configuration of the indoor unit for the wall-mounted air conditioner,

2 is a graph showing a state in which the upper and lower vanes are conventional auto-swing control by changing the angle with time;

3 is a graph showing the airflow frequency characteristics of the indoor air according to the control of FIG.

4 is a graph showing a basic rotation pattern of the upper and lower vanes when the air conditioner to which the discharge airflow control method of the indoor unit of the air conditioner of the present invention is applied is in a cooling state;

5 is a graph showing a pattern in which the upper and lower vanes are stopped according to the number of repetitions of the basic rotation pattern during the cooling operation;

6 is a graph showing the basic rotation pattern of the upper and lower vanes when the air conditioner to which the discharge airflow control method of the indoor unit of the air conditioner of the present invention is applied is in a heating state,

7 is a graph showing a pattern in which the upper and lower vanes are stopped according to the repetition frequency of the basic rotation pattern during heating operation, and

8 is a graph showing the frequency characteristics of the air airflow in the room to be cooled or heated by the discharge airflow control method of the indoor unit for the air conditioner of the present invention.

* Description of Signs of Major Parts of Drawings *

8: Upper / Lower Vane 8a: Initial Position

8b: maximum upward angle 8c: maximum downward angle

A: Basic Rotation Pattern B: High Speed Rotation Pattern

C: Low speed rotation pattern turn D: Long period rotation pattern

S: Stop position

The present invention relates to an indoor unit for an air conditioner, and more particularly, to a method for controlling the discharge airflow of an indoor unit for an air conditioner, by effectively controlling a vane that controls the wind direction of the air discharged from the indoor unit to the room. It is about.

As is well known, an air conditioner is a device that circulates a refrigerant to a motor to induce a phase change of the refrigerant at each step, and performs cooling and heating by exchanging heat with the surroundings through the phase change of the refrigerant.

In recent years, as the demand for air conditioners increases, more businesses and households install air conditioners in each room.

The air conditioner has an integrated unit which is provided with an indoor unit and an outdoor unit, and the indoor unit and the outdoor unit are separated, and the indoor unit is divided into a separate type installed indoors, and the outdoor unit is installed outdoors.

In addition, the separate type air conditioner is divided into a stand type and a wall type or a ceiling type according to the installation position of the indoor unit.

Figure 1 is a schematic diagram showing the configuration of the indoor unit for the wall-mounted air conditioner.

The indoor unit for the air conditioner includes an evaporator (2) for absorbing ambient heat while refrigerant is evaporated inside the main body (10) of the indoor unit, and a blower for sucking external air through the suction port (6) and forcibly blowing the air to the discharge port (7). The left and right vanes 9 and the upper and lower vanes 8, which are provided at the fan 4 and the discharge port 7, and adjust the discharge angle of the air discharged by the blower fan 4 to the left and right and up and down. )

Therefore, the outside air entering the suction port 6 by the blower fan 4 is exchanged and cooled while passing through the evaporator 2, and the cooled air is discharged back into the room through the discharge port 7 at this time. The angles discharged by the upper / lower vanes 8 and the left / right vanes 9 provided in (7) are controlled to spread evenly into the room.

In addition, the upper / lower and left / right vanes 8 and 9 have an auto-swing control which is stopped by a step motor (not shown) or rotates periodically up / down and left / right. Will be done.

FIG. 2 is a graph showing a state in which the upper / lower vanes 8 are in auto-swing control as a change in angle with time.

The upper and lower vanes 8 are rotated a predetermined angle upward from a neutral initial position, and also rotated a predetermined angle downward.

In addition, the up / down rotation of the predetermined angle is periodically repeated at a constant speed. That is, the angular speed when rotating from the initial position to the top and the angular velocity when rotating to the bottom are the same, and this rotation is repeatedly repeated in a simple cycle until the auto-swing is completed.

Here, the rotational angular velocity is the value of the slope of the straight line in the graph.

However, when the upper and lower vanes 8 are repeatedly operated at a constant angle and at a constant speed as described above, there are the following problems.

FIG. 3 is a graph showing the airflow frequency characteristics of indoor air when the upper / lower vanes 8 are repeatedly operated at a constant angle and at a constant speed as shown in FIG. 2.

3, the horizontal axis represents frequency and the vertical axis represents the frequency of the corresponding frequency as a dimensionless number. For reference, the horizontal axis and the vertical axis are expressed in log scale.

In general, when analyzing the airflow characteristics of natural wind, the frequency of low zone is the highest and the frequency appears in the order of middle zone and high zone. We have an inverse slope of 1 / f.

However, when the conventional auto-swing control is performed, the low frequency region 20 is significantly lower than the inclination of 1 / f, and the low frequency region is considerably low. The frequency of (24) is somewhat low, and the mid-zone region 22 appears high, which is different from the 1 / f slope.

Therefore, since the air discharged into the room has airflow characteristics different from those of the natural wind as described above, there is a problem that may cause discomfort to the user.

Accordingly, the present invention has been made to solve the above problems, by improving the rotation angle control of the upper and lower vanes, by making the air discharged to the room similar to the characteristics of the natural frequency, the user feels refreshed It is an object of the present invention to provide a method for controlling the discharge air flow of an indoor unit for an air conditioner, which has an effect that can be felt.

In order to achieve the above object, the present invention is provided in the discharge port of the indoor unit of the air conditioner is rotated upward or downward toward the maximum upward angle or maximum downward angle from the initial position by increasing the discharge angle of the discharge air up / down In the air conditioner provided with a vane for controlling, the vane up and down rotation pattern is a stream of air discharged to the room by repeating the high speed rotation pattern of the vane rotation speed and the low speed rotation pattern of the vane rotation speed is continuously repeated It provides a method for controlling the discharge air flow of the indoor unit for an air conditioner, characterized in that the frequency characteristic of having a slope of 1 / f.

In addition, the vane rotation is stopped for a predetermined time for a predetermined time whenever the rotation pattern consisting of the high speed rotation pattern and the low speed rotation pattern is repeated a predetermined period.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings a control method of the discharge air flow of the indoor unit for an air conditioner.

In addition, in the following description of the components related to the discharge airflow control method for an air conditioner of the present invention the same as the conventional reference to the prior art described with reference to Figs. 1 to 3, detailed description thereof will be omitted. .

4 is a graph showing the basic rotation pattern of the upper and lower vanes when the air conditioner to which the discharge airflow control method of the indoor unit of the air conditioner of the present invention is applied is in a cooling state.

Prior to the description, the horizontal axis of the graph is time, the vertical axis is the rotation angle of the upper and lower vanes, and the graph of FIG. 4 is a graph showing how much the upper and lower vanes rotate with time from the initial position of the neutral position. to be.

First, the upper and lower vanes (8: see FIG. 1) are rotated a ° upward from the initial position 8a in a neutral state to reach the maximum upward angle 8b, and rotated b ° downward to the maximum downward angle ( 8c).

Here, the maximum upward angle 8b and the maximum downward angle 8c may have the same value or different values.

The upper and lower vanes 8 are periodically rotated between the maximum upward angle 8b and the maximum downward angle 8c by a constant basic rotation pattern A.

Here, the basic rotation pattern (A) is a high-speed rotation pattern (B) with a high angular velocity at which the upper and lower vanes (8) rotates between the maximum upward angle (8b) and the maximum downward angle (8c), and the angular velocity to rotate Is composed of a slow slow rotation pattern (C).

Here, the high speed rotation pattern B and the low speed rotation pattern C are different in the pattern depending on the case where the air conditioner is in the cooling operation state and the heating operation state.

First, it will be described on the assumption that the air conditioner is in a cooling operation state.

When the air conditioner is in the cooling operation state, the high speed rotation pattern B is rotated downward toward the maximum downward angle 8c at the initial position, and the maximum downward angle 8c. The upper upward angle 8b is rotated upward, and when the maximum upward angle 8b is reached, the upper downward angle 8c is rotated downward, and when the maximum downward angle 8c is reached, the initial position 8a is reached. ) Is rotated upward to form a cycle.

In addition, when the upper and lower vanes 8 are the high-speed rotation pattern B, the rotational angular velocity when the upper and lower vanes 8 are rotated upward is preferably faster than the rotational angular velocity when the upper and lower vanes 8 are rotated downward. Do.

Here, the slope of the straight line in the graph of FIG. 4 represents the rotational angular velocity of the upper and lower vanes 8.

In the low-speed rotation pattern C, the upper and lower vanes 8 are rotated upward from the initial position 8a toward the maximum upward angle 8b, and the maximum downward angle reaches the maximum upward angle 8b. Rotates downwards to 8c, reaches upwards towards the initial position 8a towards the maximum downward angle 8c, and upwards upwards towards the maximum upward angle 8b once the initial position 8a is reached. When the maximum upward angle 8b is reached, the motor is rotated downward along the initial position 8a to form a cycle.

Further, the low speed rotation pattern C has an angular velocity when the upper and lower vanes 8 are rotated upward from the initial position 8a, and the upper and lower vanes 8 are upper at the initial position 8a. It is slower than the angular velocity except when it is rotated, and the angular velocity when the upper and lower vanes 8 rotates upward from the maximum downward angle 8c to the initial position 8a is the upper and lower vanes 8 Is greater than the angular velocity at the time of rotating downward.

That is, the low-speed rotation pattern C is an angular velocity when the upper and lower vanes 8 rotate upward from the maximum downward angle 8c to the initial position 8a, and the upper and lower vanes ( When angular velocity when 8) rotates downward is β, and angular velocity when the upper / lower vanes 8 rotate upward from the initial position 8a is γ, α, β, γ are It is preferable that the relationship of α> β> γ is established.

Here, the reason why the angular velocity when the upper and lower vanes 8 rotate from the initial position to the upper position is the slowest is for the following reason.

When the upper / lower vanes 8 face the upper side, slowing the rotation speed increases the time for cooling air to be discharged toward the upper part, thereby increasing the amount of air discharged toward the upper part.

On the other hand, since the air discharged from the air conditioner in the cooling operation state is lower than the air in the room, it is heavier and sinks downward. Therefore, the cooled air discharged toward the top eventually sinks slowly and eventually rises and falls. This is because there is an effect that can effectively reduce the difference.

Therefore, the upper and lower vanes 8 perform cooling while repeating the basic rotation pattern A including the high speed rotation pattern B and the low speed rotation pattern C. FIG.

At this time, whenever the basic rotation pattern (A) is repeated a predetermined period, it is preferable that the upper and lower vanes (8) is stopped for a predetermined time for a predetermined time.

FIG. 5 is a graph illustrating a pattern in which upper and lower vanes are stopped according to the number of repetitions of the basic rotation pattern during the cooling operation. Referring to FIG. 5, the upper and lower vanes 8 will be described in detail. Rotation stop of the basic rotation pattern (A) is preferably performed every time the number of repetitions of the three times.

Also, the opening degree at which the upper / lower vanes 8 are stopped forms the maximum downward angle 8c when the first stop is made, the initial position 8a when the next stop is made, and maximum upward when the next stop is made. An angle 8b is formed, and when it is stopped, the initial position 8a is repeated at one cycle.

That is, when the repetition of the basic rotation pattern reaches the third (A3) and the opening degree of the upper and lower vanes 8 of the basic rotation pattern A reaches the first maximum downward angle 8c, the upper and lower vanes (8) is stopped for a predetermined time (S1), the repetition of the basic rotation pattern reaches the sixth (A6), the opening degree of the upper and lower vanes (8) of the basic rotation pattern (A) is the first initial position ( When reaching 8a), the upper and lower vanes 8 are stopped for a predetermined time (S2), and when the repetition of the basic rotation pattern reaches the ninth (A9), the upper and lower vanes of the basic rotation pattern A are When the opening degree of (8) reaches the first maximum upward angle 8b, the upper and lower vanes 8 are stopped (S3) for a predetermined time. In addition, when the repetition of the basic rotation pattern reaches the 12th (A12) and the opening degree of the upper and lower vanes 8 of the basic rotation pattern A reaches the second initial position 8a, the upper and lower vanes ( 8) is stopped for a predetermined time (S4) is a period.

Therefore, according to the discharge airflow control method of the indoor unit for the air conditioner of the present invention, in addition to the basic rotation pattern (A) consisting of the high speed rotation pattern (B) and the low speed rotation pattern (C), it consists of 12 basic rotation patterns (A) Each time the number of repetitions of the basic rotation pattern A reaches a multiple of three, a long period pattern D in which the opening degree of the upper and lower vanes 8 is stopped for a predetermined time is formed.

At this time, the time for stopping the upper / lower vanes 8 is preferably 10 seconds.

Here, the period in which the upper and lower vanes 8 are stopped or the time at which the stops are stopped may be appropriately changed according to the surrounding environment in addition to those described in the present embodiment.

In the following description, it is assumed that the air conditioner is in a heating operation state.

The discharge airflow control method of the indoor unit for an air conditioner of the present invention when the air conditioner is in the heating operation state has a characteristic of being symmetrical with respect to the time axis as compared with the case where the air conditioner is in the cooling operation state.

6 is a graph showing a basic rotation pattern of the upper and lower vanes when the air conditioner to which the discharge airflow control method of the indoor unit of the air conditioner of the present invention is applied is in a heating state.

First, the upper and lower vanes (8: see FIG. 1) are rotated a '° upward from the initial position 8a' in a neutral state to reach the maximum upward angle 8b ', and rotated b' ° downward. The maximum downward angle 8c 'is reached.

In addition, the upper and lower vanes 8 include a high speed rotation pattern B 'having a high rotational angular speed and a low speed rotation pattern C having a low angular speed between a maximum upward angle 8b' and a maximum downward angle 8c '. It rotates periodically by the basic rotation pattern A 'which consists of ′).

Here, when the air conditioner is in the heating operation state, the high-speed rotation pattern B 'is rotated upward from the initial position 8a' to the maximum upward angle 8b 'when the upper / lower vanes 8 are in the heating state. When it reaches the maximum upward angle 8b ', it rotates downward toward the maximum downward angle 8c', and when it reaches the maximum downward angle 8c ', it rotates upward toward the maximum upward angle 8b', When it reaches the maximum upward angle 8b ', it rotates downward toward the initial position 8a', and forms a period.

In addition, when the high-speed rotation pattern (B '), it is preferable that the rotational angular velocity when the upper / lower vanes 8 are rotated downward than the rotational angular velocity when the upper / lower vanes (8) is rotated upward.

In the low-speed rotation pattern C ', the upper and lower vanes 8 rotate downward from the initial position 8a' toward the maximum downward angle 8c ', and reach the maximum downward angle 8c'. Is rotated upwards to the maximum upward angle 8b ', rotates downward toward the initial position 8a' until the maximum upward angle 8b 'is reached, and again reaches the maximum downward angle (8a'). 8c 'is rotated downward, and when the maximum downward angle 8c' is reached, it is rotated upward toward the initial position 8a 'to form a cycle.

In addition, the low-speed rotation pattern (C '), the angular velocity when the upper and lower vanes 8 are rotated from the initial position (8a') to the lower, the upper and lower vanes (8) is the initial position (8a ') Is slower than the angular velocity at the rest except when rotated downward, and the angular velocity when the upper / lower vanes 8 rotate downward from the maximum upward angle 8b 'to the initial position 8a' It is preferable that the upper / lower vanes 8 are larger than the angular velocity when the upper portion rotates upward.

Here, the slowest angular velocity when the upper and lower vanes 8 rotate from the initial position 8a 'to the lower one is that warm air is lighter than indoor air, so the air discharged toward the lower portion slowly rises upward. This is to increase the discharge amount by lengthening the discharge time toward the lower side because it can effectively reduce the temperature difference up and down.

Accordingly, the upper and lower vanes 8 perform heating while repeating the basic rotation pattern A 'formed of the high speed rotation pattern B' and the low speed rotation pattern C '.

At this time, whenever the basic rotation pattern A 'is repeated a predetermined period, the upper and lower vanes 8 are preferably stopped for a predetermined time.

FIG. 7 is a graph illustrating a pattern in which the upper and lower vanes 8 are stopped according to the number of repetitions of the basic rotation pattern A 'when the air conditioner is in a heating state. Referring to FIG. The detailed description is as follows.

When the opening degree of the upper and lower vanes 8 of the third repeated basic rotation pattern A'3 reaches the first maximum upward angle 8b ', the upper and lower vanes 8 stop for a predetermined time (S' 1) and the upper and lower vanes 8 are stopped for a predetermined time when the opening degree of the upper and lower vanes 8 of the sixth repeated basic rotation pattern A'6 reaches the first initial position 8a '. (S′2), and the upper and lower vanes 8 are formed when the opening degree of the upper and lower vanes 8 of the ninth repeated basic rotation pattern A′9 reaches the first maximum downward angle 8c '. It stops for a predetermined time (S'3). Further, when the opening degree of the upper and lower vanes 8 of the 12th basic rotation pattern A'12 reaches the second initial position 8a ', the upper and lower vanes 8 stop for a predetermined time (S' 4) to become a cycle.

At this time, the time for stopping the upper / lower vanes 8 is preferably 10 seconds.

Therefore, according to the discharge airflow control method of the indoor unit for the air conditioner of the present invention, in addition to the basic rotation pattern A 'consisting of the high speed rotation pattern B' and the low speed rotation pattern C ', the 12 basic rotation patterns A' Long period pattern D, in which the opening degree of the upper / lower vanes 8 is stopped for a predetermined time at a predetermined opening whenever the number of repetitions of the basic rotation pattern A ′ reaches a multiple of three. ′) Is formed.

On the other hand, the period in which the upper and lower vanes 8 are stopped or the time at which they are stopped can be changed appropriately according to the surrounding environment in addition to those described in the present embodiment.

8 is a graph showing the frequency characteristics of the air airflow in the room to be cooled or heated by the discharge airflow control method of the indoor unit for the air conditioner of the present invention.

In Fig. 8, the horizontal axis represents frequency and the vertical axis represents the frequency of the corresponding frequency as a dimensionless number. For reference, the horizontal axis and the vertical axis are expressed in log scale.

As shown in the figure, according to the discharge airflow control method of the indoor unit for the air conditioner of the present invention, the low frequency region 120 has the highest pattern of frequency-specific frequency of the air stream discharged into the room, 124 is the lowest, the frequency of the middle region 122 is located between the frequency of the storage region 120 and the frequency of the high region 122 so that the pattern is inclined in a straight line shape. This decreases, indicating a linear inverse 1 / f slope of natural wind.

As described above, according to the discharge airflow control method of the indoor unit of the air conditioner of the present invention, the air discharged to the room from the air conditioner is controlled by the upper and lower vanes, so that the frequency characteristics of the airflow characteristics of the natural wind Since 1 / f has a slope, it is effective to increase the user's freshness to feel the satisfaction of the product.

Claims (16)

In the air conditioner equipped with a vane provided in the discharge port of the indoor unit of the air conditioner to control the discharge angle of the discharged air up and down by rotating upward or downward toward the maximum upward angle or maximum downward angle from the initial position, The vane's up / down rotation pattern has a high speed rotation pattern of the vane's rotation speed and a low speed rotation pattern of the vane's rotation speed continuously so that the frequency characteristic of the airflow discharged to the room has a slope of 1 / f. Discharge airflow control method for an indoor unit for an air conditioner, characterized in that. The method of claim 1, When the air conditioner is in a cooling operation state, the high speed rotation pattern has an angular velocity of rotation when the vane is rotated upwards than an angular velocity of rotation of the vane downward. Control method of the discharge airflow. The method of claim 1, When the air conditioner is in a cooling operation state, the high speed rotation pattern is such that the vane is rotated downward toward the maximum downward angle at the initial position, and is rotated upward toward the maximum upward angle when the maximum downward angle is reached. When the upward angle is reached again rotates downward along the maximum downward angle, and reaches the maximum downward angle is rotated upward toward the initial position to form a cycle of the indoor unit for an air conditioner characterized in that. The method of claim 1, When the air conditioner is in the cooling operation state, the low-speed rotation pattern indicates that the angular velocity when the vane is rotated upward from the initial position is slower than the angular velocity when the vane is rotated upward from the initial position. Discharge airflow control method for an indoor unit for an air conditioner, characterized in that. The method of claim 4, wherein The low speed rotation pattern is a discharge air flow control method of the indoor unit for an air conditioner, characterized in that the angular velocity when the vane rotates upward from the maximum downward angle to the initial position, the angular velocity when the vane rotates downward. The method of claim 1, When the air conditioner is in the cooling operation state, the low-speed rotation pattern, the vane is rotated upwards from the initial position to the maximum upward angle, the maximum upward angle is rotated downward to the maximum downward angle, the maximum downward Rotate upward toward the initial position when the angle is reached, and rotates upward toward the maximum upward angle when the initial position is reached, and rotates downward toward the initial position again when the maximum upward angle is reached to form a cycle. Discharge airflow control method of an indoor unit for an air conditioner. The method of claim 1, When the air conditioner is in a heating operation state, the high-speed rotation pattern is an indoor unit for an air conditioner, wherein the rotational angular velocity when the vane is rotated downward is faster than the rotational angular velocity when the vane is rotated upward. Control method of the discharge airflow. The method of claim 1, When the air conditioner is in a heating operation state, the high speed rotation pattern is such that the vane is rotated upwards toward the maximum upward angle from the initial position, and rotates downward toward the maximum downward angle until the maximum upward angle is reached. When reaching the downward angle is rotated upward toward the maximum upward angle, and reaches the maximum upward angle is rotated downward toward the initial position to form a cycle of the air conditioner indoor unit, characterized in that the cycle. The method of claim 1, When the air conditioner is in the heating operation state, the low-speed rotation pattern indicates that the angular velocity when the vane rotates from the initial position to the lower side is slower than the angular velocity when the vane rotates from the initial position to the lower position. Discharge airflow control method for an indoor unit for an air conditioner, characterized in that. The method of claim 9, The low speed rotation pattern, the method of controlling the discharge airflow of the indoor unit for the air conditioner, characterized in that the angular speed when the vane rotates downward from the maximum upward angle to the initial position is greater than the angular speed when the vane rotates upward. . The method of claim 1, When the air conditioner is in the heating operation state, the low speed rotation pattern is such that the vane is rotated downward from the initial position toward the maximum downward angle, and the maximum downward angle is rotated upward until the maximum upward angle, and the maximum Rotate downward toward the initial position when the upward angle is reached, rotate downward toward the maximum downward angle when the initial position is reached, and rotate upwards toward the initial position again when the maximum downward angle is reached to form a cycle. Discharge airflow control method of an indoor unit for an air conditioner. The method of claim 1, And the rotation of the vanes is stopped for a predetermined time every time a rotation pattern consisting of the high speed rotation pattern and the low speed rotation pattern is repeated a predetermined period. The method of claim 12, When the air conditioner is in the cooling operation state, the opening degree when the vane is rotated stop is the first downward angle, the initial position at the next stop, and the maximum upward angle at the next stop. And discharging air flow control method of the indoor unit for an air conditioner, wherein the air conditioner is repeated at a time when the motor is stopped. The method of claim 12, When the air conditioner is in the heating operation state, the opening degree when the vane is rotated and stopped is the first upward angle, the initial position at the next stop, and the maximum downward angle at the next stop. And discharging air flow control method of the indoor unit for an air conditioner, wherein the air conditioner is repeated at a time when the motor is stopped. The method of claim 12, The rotation stop of the vane is discharged air flow control method of the indoor unit for the air conditioner, characterized in that is performed every time the number of repetitions of the rotation pattern reaches a multiple of three. The method of claim 12, Discharge airflow control method of the indoor unit for an air conditioner, characterized in that the vane is stopped for 10 seconds.

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