KR100602699B1 - A air cleaning system and a control method thereof - Google Patents

Abstract

The present invention relates to an air cleaning system and a control method thereof, and an object of the present invention is to provide an air cleaning system and a method of controlling the same, by measuring an indoor temperature and an outdoor temperature to check whether a damper is broken and a failure state.

To this end, the present invention is characterized in that in the control method of the air cleaning system having a ventilation function, measuring the indoor temperature and the outdoor temperature, and determines whether the damper failure by the deviation of the indoor temperature and the outdoor temperature.

In addition, the damper is determined whether the damper is in a closed state when the current deviation between the indoor temperature and the outdoor temperature is greater than the previous deviation between the indoor temperature and the outdoor temperature for a predetermined time. It is done.

In addition, the damper is determined whether the damper is in the open state when the current temperature and the outdoor temperature deviation lasts for a predetermined time in the same state as the previous deviation of the indoor temperature and the outdoor temperature. It is done.

Description

Air cleaning system and a control method

1 is a cross-sectional view showing an air cleaning system according to an embodiment of the present invention.

FIG. 2 is a detailed perspective view illustrating an air cleaner constituting the air cleaning system of FIG. 1.

3 is a block diagram showing the configuration of the air cleaning system shown in FIG.

4A is a flowchart illustrating a process of determining whether a damper of the air cleaning system illustrated in FIG. 3 is in a closed state.

4B is a flowchart illustrating a process of determining whether the damper of the air cleaning system illustrated in FIG. 3 is in an open state.

Explanation of symbols on the main parts of the drawings

10: air cleaner

20 ventilation device

24: total heat exchanger

45: air supply damper

62: exhaust damper

91: room temperature sensor

92: outdoor temperature sensor

90: micom

The present invention relates to an air cleaning system and a control method thereof, and more particularly, to an air cleaning system and a control method thereof capable of detecting a failure of a damper.

In general, an air cleaner is a device that cleans the air by filtering out dust or foreign substances in the indoor air. The air cleaner includes a main body having an inlet and an outlet, and inside the main body, the indoor air is introduced into the main body and purified. A blower for providing a blowing force to discharge the indoor air to the outside of the main body through the discharge port, and a filter for filtering dust or foreign matter in the air introduced into the main body is provided.

Therefore, as the blower operates, the indoor air introduced into the main body through the inlet is filtered out of dust or foreign matter in the course of passing through the filter and then discharged back into the indoor space through the outlet.

However, such an air cleaner can effectively remove fine dust or odors contained in indoor air using the filter, but there is a problem in that it cannot effectively remove gases such as carbon dioxide generated through human breathing.

In order to solve this problem, by using an air purifier integrated with a ventilator and an air cleaner, a gas such as carbon dioxide, which is difficult to remove only by an air cleaner by purifying indoor air and ventilating the room, is moved to the outside through indoor ventilation. To be discharged.

In addition, a conventional air purifier integrated air purifier is provided with a damper such as an air supply damper or an exhaust damper to control the opening and closing of the air flow according to the ventilation mode or the clean mode to drive the ventilation device and the air cleaner.

However, the dampers provided in the conventional air cleaners are provided in the air circulation passages, so unless the dampers are normally opened or closed, there is a problem in the motor to operate the dampers unless the interior of the air cleaner is directly opened in the installation position. There was no problem.

In addition, there was a problem that can not determine whether any of the dampers in the open / closed state of failure.

The present invention is to solve the above problems, an object of the present invention is to provide an air cleaning system and a control method that can determine whether the damper failure and the failure state by measuring the indoor temperature and the outdoor temperature.

According to the present invention for achieving the above object, in the control method of the air cleaning system having a ventilation function, measuring the indoor temperature and the outdoor temperature, and determining whether the damper is broken by the deviation of the indoor temperature and the outdoor temperature. It features.

In addition, whether or not the damper is broken, characterized in that the determination is started when the difference between the room temperature initial value at the moment the air cleaning system is turned on and the current room temperature is more than a preset value.

In addition, whether or not the damper is determined that the damper is in a closed state when it is determined that the current deviation between the indoor temperature and the outdoor temperature is greater than the previous deviation between the indoor temperature and the outdoor temperature for a predetermined time. It features.

In addition, whether or not the damper is broken, if the current temperature and the outdoor temperature deviation is the same as the previous deviation between the indoor temperature and the outdoor temperature for more than a predetermined time it is determined that the damper in the open state is determined to fail. It features.

In the air cleaning system having a ventilation function, the indoor temperature sensor for measuring the indoor temperature, the outdoor temperature sensor for measuring the outdoor temperature, the damper provided to open and close the flow of air, the difference between the indoor temperature and the outdoor temperature It characterized in that it comprises a control unit for determining whether or not the failure of the damper by measuring.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

1 and 2, the air cleaning system according to an embodiment of the present invention is connected to the air cleaner 10 provided in the room, the air purifier 10, the ventilation device 20 for ventilating the indoor air It includes.

The ventilation device 20 has an air supply passage 22 and an exhaust passage 23 having inlets 22a and 23a and outlets 22b and 23b, respectively, in the body 21 forming an external shape. On one side of the 22 and the exhaust passage 23, an air supply fan 22c and an exhaust fan 23c are formed, respectively.

In addition, the air supply passage 22 and the exhaust passage 23 are provided to intersect with each other, and at the intersection of the air supply passage 22 and the exhaust passage 23, the air of the exhaust passage 23 and the air supply passage 22 An electrothermal heat exchanger (24) is installed which allows air to exchange with each other. The total heat exchanger (24) is a heat exchange between the outdoor air and the indoor air introduced into the room by allowing the outdoor air supplied to the room through the ventilator 20 to exchange heat with the indoor air exhausted to the outside through the ventilator (20) This is to reduce the temperature difference.

The ventilator 20 having such a structure has a body 21 through which the air introduced through the inlet 22a of the air supply passage 22 is driven through the outlet 22b of the air supply passage 22 as the air supply fan 22c is driven. ) Is discharged to the outside, the air introduced through the inlet (23a) of the exhaust passage 23 as the exhaust fan (23c) is driven to the outside of the body 21 through the outlet (23b) of the exhaust passage (23) The air supply duct 31 is connected to the outlet 22b of the air supply passage 22 and the inlet 23a of the exhaust passage 23 to connect the air cleaner main body 10 and the ventilator 20, respectively. One end of the exhaust duct 32 is connected, and the air supply duct 31 and the other end of the exhaust duct 32 are provided with extensions 31a and 32a extending into the interior space through the interior wall.

On the other hand, the rear side of the air cleaner main body 10 is provided with a duct connecting portion 40 to which the extension portions 31a and 32a of the respective ducts 31 and 32 extending into the room are provided, and the air supply duct is provided in the duct connecting portion 40. An outside air inlet 41 provided to be connected to the 31 and an air outlet 42 provided to be connected to the exhaust duct 32 are formed.

The inner space of the main body 10 includes a partition plate 43 having an air supply space 50 on the right side wider to communicate with the outside air inlet 41 and an exhaust space 60 on the left side narrowly provided to communicate with the inside air outlet 42. It is provided to be partitioned through each other, in this case, the air inlet 61 is provided on the front of the exhaust space 60 so that the indoor air flows into the exhaust space 60, the exhaust space 60 is the exhaust space 60 It is formed along the inner surface of the main body 10 to facilitate the communication of air through.

In addition, the air supply space 50 is divided into a first air supply space 70 of the upper side and a second air supply space 80 of the lower side through the partition plate 44 for dividing the inside up and down, the first air supply space ( The front of the 70 is provided with a discharge port 51 for discharging the air in the air supply space 50 into the room, the lower surface of the second air supply space 80 is formed so that the indoor air flows into the air supply space (50) The suction port 52 is provided.

In addition, a filter 53 for filtering indoor air introduced into the air supply space 50 through the suction port 52 is provided in the second air supply space 80 at the upper portion of the air inlet 52. It is installed, the blowing fan is provided in the first air supply space 70 as a centrifugal fan to blow the air introduced into the air supply space 50 through the outside air inlet 41 and the suction port 52 to the discharge port 51 side 54 is provided, and the blowing fan motor 55 which rotates the blowing fan 54 is fixed to the inner upper surface of the main body 10. In addition, a communication hole 44a is formed in the separator plate 44 so that the inside of the first air supply space 70 and the second air supply space 80 communicate with each other, and the communication hole 44a is formed in the blower fan 54. It is provided at a position corresponding to the inlet, the first air supply space 70 is provided with a blowing guide 71 for guiding the air blown by the blowing fan 54 toward the discharge port 51 side.

In addition, an exhaust damper 62 is provided in the middle of the exhaust space 60 to open and close the flow of air through the exhaust space 60, and the open air inlet 41 is opened and closed. An air supply damper 45 is provided. The air supply damper 45 and the exhaust damper 62 allow the air cleaner main body 10 to perform only the indoor air cleaning function or to perform a ventilation function as necessary, and each opening and closing member 45a provided to be rotatable. And 62a, an air supply damper motor and an exhaust damper motor 45b, 62b for rotating the opening / closing members 45a, 62a.

Each of the dampers 45 and 62 is provided to adjust the opening angle of the opening and closing members 45a and 62a to control the flow rate of air. For this purpose, the motors 45b and 62b are the opening and closing members 45a and 62a. Step motor is adopted to facilitate the opening angle adjustment. Therefore, the dampers 45 and 62 are supplied to the air supply space 50 through the flow rate of the indoor air discharged to the outside through the exhaust space 60 or the outside air inlet 41 by adjusting the opening angles of the opening and closing members 45a and 62a. It is possible to adjust the flow rate of the outdoor air flowing into the inside.

In addition, the outside air inlet 41 located at the lower portion of the duct connection part 40 is formed at the side of the second air supply space 80, and flows into the second air supply space 80 through the outside air inlet 41. The air is introduced into the first air supply space 70 through the communication hole 44a via the separator plate 44 and the filter 53.

In addition, the blower fan 54 discharges air together with the indoor air outside the main body 10 of the suction port 52 and the outdoor air of the air supply pipe 31 with the air supply damper 45 opening the air inlet 41. High speed operation mode that rotates at high speed so that it can be blown to the side) and low speed operation mode that rotates at a relatively low speed compared to the high speed operation mode to blow only the outdoor air on the air supply pipe 31 side to the discharge port 51 side. It is prepared to be possible.

This is because when the blowing fan 54 is rotated at a low speed by the pressure difference between the suction port 52 and the outside air inlet 41 and the air resistance of the suction port 52 by the filter 53, the air supply duct 31 is outdoors. When only the air is blown to the discharge port 51 side to perform the ventilation action, when rotating the blowing fan 54 at a high speed, the static pressure around the blowing fan 54 is lowered and the outdoor air and air supply duct outside the suction port 52 The outdoor air is blown to the discharge port 51 side so that the ventilation function and the air cleaning function can be simultaneously performed.

As shown in FIG. 3, the air cleaning system according to the exemplary embodiment of the present invention includes an outdoor temperature sensor 92 for measuring the temperature of outdoor air in addition to the apparatus shown in FIGS. 1 and 2, and a temperature of indoor air. And a room temperature sensor 91, a motor driver 93 for driving the plurality of motors 55, 94, 95, 45b, and 62b, and a microcomputer 90 for controlling the devices.

It is necessary to ventilate while purifying the indoor air. When performing the ventilation mode and the clean mode simultaneously, the blower fan 54 is rotated in the high speed operation mode with the air supply damper 45 and the exhaust damper 62 open. Then, the indoor air outside the intake port 52 and the outdoor air of the air supply duct 31 at the outside air inlet 41 are introduced into the air supply space 50 together, and then are discharged into the room through the discharge port 51, and some indoor air is exhausted. Ventilation and air cleaning are performed by being discharged to the outside through the space 60.

In addition, when only the clean mode is performed, the blower fan 54 is rotated in a state in which the air supply damper 45 is closed to close the outside air inlet 41 and the exhaust damper 62 is closed to block air flow through the exhaust space 60. Let's do it. Then, the indoor air flows into the second air supply space 80 through the suction port 52 by the blowing action of the blowing fan 54 and passes through the filter 53. The air passing through the filter 53 is the foreign matter. After flowing into the first air supply space 70 in a filtered state, it is discharged into the room through the discharge port 51.

On the other hand, if you only want to perform the ventilation mode by opening the air inlet damper (45) to open the air inlet 41 and open the exhaust damper (62) blower fan in the state that the air flows through the exhaust space (60) (54) ) To low speed operation mode.

As described above, in the air cleaning system, the air purifying mode and the clean mode require the air supply damper 45 and the exhaust damper 62 to be normally opened and closed according to each operation mode.

A method of determining whether the damper of the air cleaning system shown in FIG. 3 is broken will be described with reference to FIGS. 4A and 4B. First, whether the driving device and the driving degree of the ventilation device 20 and the air cleaner 10 are determined, and the moment the operation is turned on, the indoor temperature sensor 91 measures the initial temperature of the room and stores it in the microcomputer 90. S100, S100 ') and periodically measures the indoor temperature and the outdoor temperature using the indoor temperature sensor 91 and the outdoor temperature sensor 92 and outputs them to the microcomputer 90.

The microcomputer 90 stores the received indoor temperature and the outdoor temperature, and calculates and stores the deviation between the indoor temperature and the outdoor temperature separately (S110, S110 ').

After the operation of the air cleaning system starts, it is determined whether the difference between the initial indoor temperature stored in the microcomputer 90 and the current indoor temperature detected by the indoor temperature sensor 91 is greater than or equal to the reference value (5 degrees). , S120 ')

If the difference between the room temperature initial value and the current room temperature is not higher than the reference value (5 degrees), it is determined that the air supply damper and the exhaust dampers 45 and 62 do not operate normally. Continues to drive. (S180, S180 ')

If the difference between the initial indoor temperature and the current indoor temperature is greater than or equal to the reference value (5 degrees) in step 120, it is determined that an abnormality may occur in the operation of the dampers 45 and 62, and the process proceeds to the step of detecting the failure. The failure of the dampers 45 and 62 can be divided into the case where the dampers 45 and 62 are fixed in the open state and the case where the dampers 45 and 62 are fixed in the closed state.

First, a method of determining whether the dampers 45 and 62 are fixed in a closed state and a failure occurs is illustrated in FIG. 4A. When the dampers 45 and 62 are fixed in the closed state, the flow of air between the outside and the room is blocked, and the temperature difference between the indoor air and the outdoor air increases with time. Therefore, by using the deviation between the indoor temperature and the outdoor temperature stored in the microcomputer 90, it is determined whether the current deviation is greater than the previously stored deviation (S130).

As a result of the determination, if the current deviation is greater, it is determined that the deviation is in an increasing trend, and the number of detections is stored in the microcomputer 90 (S140), and it is determined whether the current detection number is 60 or more. If the number of detections is less than 60, wait until 1 minute has elapsed (S190). After 1 minute of re-detection, it is determined whether the current deviation is greater than the previous deviation (S130). Repeat the process (S140). That is, it is determined whether the current deviation is greater than the previous deviation every 1 minute to determine whether the difference between the indoor temperature and the outdoor temperature is continuously increasing, and the number of detections is 60 or more times (S150). If the deviation is in the increasing trend for more than one minute, it is determined that the dampers 45 and 62 are fixed in a closed state. (S160)

If the current deviation is less than the previous deviation in the step of comparing the current deviation and the previous deviation (S130), the number of detections stored in the microcomputer 90 is cleared (S170), and the dampers 45 and 62 are normally operated. It is determined that it is working (S180).

Next, a method of determining whether the dampers 45 and 62 are fixed in an open state and a failure occurs is illustrated in FIG. 4B. When the dampers 45 and 62 are fixed in the open state, unnecessary exchange is continued between the indoor air and the outdoor air, so that the difference between the indoor temperature and the outdoor temperature is maintained even over time. Therefore, it is determined whether the current deviation is equal to the previously stored deviation using the deviation between the indoor temperature and the outdoor temperature stored in the microcomputer 90 (S130 ').

As a result of the determination, if the current deviation and the previous deviation are the same, the number of detections is stored in the microcomputer 90 (S140 '). It is determined whether the number of detections is 60 or more times. (S150') When the number of detections is less than 60 times. Wait until 1 minute has elapsed (S190 '). After 1 minute of re-detection, it is determined whether the current deviation and the previous deviation are the same (S130') and the process of storing the number of detections (S140 ') is repeated. That is, it determines whether the current deviation and the previous deviation are the same every 1 minute to determine whether the difference between the indoor temperature and the outdoor temperature is kept constant over time, and the number of detections is 60 or more times (S150 '). In other words, if there is no change in the deviation for more than 60 minutes, the dampers 45 and 62 are fixed in the open state and are judged to be in a failure state.

If the current deviation and the previous deviation are not the same in the step of comparing the current deviation and the previous deviation (S130 '), the number of detections stored in the microcomputer 90 is cleared (S170') and the dampers 45 and 62 are closed. It is determined that it is operating normally (S180 ').

As described in detail above, the present invention is installed in the air circulation passage, it is possible to determine whether the damper is operating normally by measuring the difference between the indoor temperature and the outdoor temperature of the damper operation, which is difficult to check whether the failure, At the same time, it can be determined in which of the open / closed states is fixed an abnormality in operation.

Claims (5)

delete        In the control method of the air cleaning system for measuring the indoor temperature and the outdoor temperature of the air cleaning system having a ventilation function, and determines whether the damper failure by the deviation of the indoor temperature and the outdoor temperature, The failure of the damper, the control method of the air cleaning system, characterized in that to start the determination when the difference between the room temperature initial value at the moment the air cleaning system is turned on and the current room temperature is more than a preset value.        In the control method of the air cleaning system for measuring the indoor temperature and the outdoor temperature of the air cleaning system having a ventilation function, and determines whether the damper failure by the deviation of the indoor temperature and the outdoor temperature, The failure of the damper is determined that the damper is in a closed state when the current deviation between the indoor temperature and the outdoor temperature is greater than the previous deviation between the indoor temperature and the outdoor temperature for a predetermined time. Control method of air cleaning system.        In the control method of the air cleaning system for measuring the indoor temperature and the outdoor temperature of the air cleaning system having a ventilation function, and determines whether the damper failure by the deviation of the indoor temperature and the outdoor temperature, The failure of the damper, if the current temperature and the deviation of the outdoor temperature is the same as the previous deviation between the indoor temperature and the outdoor temperature for a predetermined period of time, the damper is determined that the failure in the open state. Control method of air cleaning system. In the air cleaning system with a ventilation function, An indoor temperature sensor for measuring indoor temperature, An outdoor temperature sensor for measuring outdoor temperature, A damper provided to open and close the flow of air, In determining whether the damper is broken by measuring a difference between the indoor temperature and the outdoor temperature, the difference is determined when the difference between the initial temperature of the room at the moment the air cleaning system is turned on and the current indoor temperature is greater than or equal to a preset value. Air cleaning system comprising a control unit for starting.

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