KR101190354B1 - Airflow controlling method of fan for an air conditioning system - Google Patents

Abstract

The present invention relates to a method for controlling fan air volume of an air conditioning system, and more specifically, to perform an air cleaning function and a ventilation function at the same time or alone, and by varying the air volume of the fan according to the cleaning alone or ventilation and clean interlocking operation, The present invention relates to a method for controlling fan air volume of an air conditioning system in which an indoor environment is maintained in an appropriate state and power consumption is reduced.

The fan airflow control method of the air conditioning system according to the present invention is a control method of an air conditioning system including an air cleaning unit for circulating indoor air for clean operation and an electric heat exchanger for exchanging indoor and outdoor air for ventilation operation. The power is supplied to the air conditioning system, and the fan is driven according to the mode and the air volume set during the clean single operation mode and the ventilation clean interlock operation mode, and according to whether the air volume change command is input or the state of the operation mode, The rotational speed of the fan or the air supply fan and the exhaust fan of the heat exchanger is changed, and the sum of the amount of air circulated and discharged into the room and the amount of air introduced into the room and discharged into the room regardless of the mode change are set. The fan of the air cleaning unit, the air supply fan of the heat exchanger, and the exhaust so that the amount of air flows. The rotation speed of at least one fan of the fan is characterized in that it is changed.

According to the above configuration, the fan drive speed of the air cleaning unit is set differently even if the air flow rate grade input by the air flow selection key is the same according to the case of the clean single operation mode and the ventilation and clean interlock operation. The power consumption of the harmonic system is reduced.

Air Cleaners, Heat Exchangers, Controllers

Description

Airflow controlling method of fan for an air conditioning system

1 is an external perspective view of an air cleaning unit constituting an air conditioning system according to the spirit of the present invention;

2 is an exploded perspective view of the air cleaning unit.

Figure 3 is an exploded perspective view showing a state of air flow in the air cleaning unit is set the ventilation function.

4 is a perspective view showing a state of air flow in the air cleaning unit in which the cleaning function is set.

5 is a block diagram showing the configuration of an air conditioning system according to the spirit of the present invention.

6 is a cross-sectional view showing the flow of air inside the air conditioning system.

7 is a plan view showing the configuration of a controller constituting the air conditioning system according to the spirit of the present invention.

Figure 8 is a block diagram schematically showing the configuration of an air conditioning system according to the spirit of the present invention.

9 is a flowchart showing a control method of an air conditioning system according to the spirit of the present invention.

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

10: air cleaner 11: front cover

12: cover guide 13: filter

14: discharge grill 15: pan

16: rear panel 17: installation case

18: installation bar 30: duct member

31: air supply duct 32: exhaust duct

40: heat exchanger

The present invention relates to a method for controlling fan air volume of an air conditioning system, and more specifically, to perform an air cleaning function and a ventilation function at the same time or alone, and by varying the air volume of the fan according to the cleaning alone or ventilation and clean interlocking operation, The present invention relates to a method for controlling fan air volume of an air conditioning system in which an indoor environment is maintained in an appropriate state and power consumption is reduced.

In general, when a living organism breathes for a certain period of time in a space that is blocked from outdoor air, the amount of carbon dioxide increases in the room, which interferes with the living breathing. Therefore, indoor space should be ventilated frequently in a space where many people stay together, such as an office, or in a narrow space such as a vehicle. At this time, a commonly used ventilation system.

In detail, the ventilation system is generally a device that is installed on the indoor floor or fixedly mounted on the ceiling, such that outdoor air is introduced into the room and indoor air is discharged to the outside. Therefore, the installation of the ventilation system is required in a space where the circulation of indoor air is not smooth or a space where many people stay.

However, in the conventional general ventilation system, only a clean device for cleaning indoor air or a ventilation device for circulation of indoor air and outdoor air is installed. In other words, when the ventilation device is operated in winter when the temperature difference between the outdoor air and the indoor air is remarkable, there is a problem that the indoor temperature is lowered and the heating efficiency is significantly lowered.

In addition, when the ventilation device and the clean device are installed in the room as independent devices, respectively, there is a disadvantage in that excessive power is consumed to drive them. In addition, when the ventilation device and the clean device are installed in the room as independent devices, the driving fan of the clean device rotates at the same rotational speed regardless of the clean alone or the clean and ventilation interlocking operation. have.

The present invention has been proposed to solve the above problems, and according to the case where the ventilation function and the clean function are performed at the same time and the case is performed alone, the air so that the rotation speed of the fan is different even if the air volume of the same grade is set An object of the present invention is to provide a method for controlling fan air volume of a conditioning system. Furthermore, an object of the present invention is to provide a fan air volume control method of an air conditioning system in which power consumption is reduced and air circulation efficiency is increased by allowing the fan rotation speed to be different even if the same air volume is set according to the operation mode.

Fan air volume control method of the air conditioning system according to the present invention for achieving the object as described above includes an air cleaning unit for circulating the indoor air for clean operation, and a heat exchanger for the ventilation operation by replacing the indoor and outdoor air The control method of the air conditioning system, the power is supplied to the air conditioning system, the fan is driven in accordance with the mode and the air volume set in the clean single operation mode and the ventilation clean interlock operation mode, whether the air volume change command is input or the operation mode The rotational speeds of the fan of the air cleaning unit or the air supply fan and the exhaust fan of the heat exchanger are changed according to the state of, and regardless of the mode switching, the indoor air is circulated and the outdoor air is introduced and the indoor air is introduced into the room. Of the air cleaning unit so that the sum of the amount of air discharged to The rotation speed of at least one of the fan, the air supply fan and the exhaust fan of the heat exchanger is characterized in that it is changed.

According to the above configuration, the fan drive speed of the air cleaning unit is set differently even if the air flow rate grade input by the air flow selection key is the same according to the case of the clean single operation mode and the ventilation and clean interlock operation. The power consumption of the harmonic system is reduced.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. It should be understood, however, that there is no intention to limit the scope of the present invention to the embodiment shown, and that other embodiments falling within the scope of the present invention may be easily devised by adding, Can be proposed.

1 is an external perspective view of an air cleaning unit constituting an air conditioning system according to the spirit of the present invention, and FIG. 2 is an exploded perspective view of the air cleaning unit.

1 and 2, the air cleaning unit 10 according to the present invention includes a front cover 11 having an air inlet formed at a central portion thereof, a cover guide 12 on which the front cover 11 is seated, The discharge guide 14 is mounted on the cover guide 12 by a sliding method, and an air discharge grill 141 is formed at a side thereof, and is stacked below the discharge grill 14 to suck in indoor air. A filter 13 for filtering out foreign substances contained in the filter and removing odors, a control box 19 coupled to a lower edge of the discharge grill 14, and a lower side of the cover guide 12. The control panel 21 to be coupled, and the shielding member 23 for selectively shielding the discharge grill 141 formed on the side of the discharge grill 14. In detail, a main PCB board for controlling the operation of the air cleaning unit 10 is built in the control box 19, and the PCB board corresponds to a control unit for controlling the operation of the air cleaning unit 10. Micom is equipped. In addition, a display PCB substrate displaying an operating state of the air cleaning unit 10 is mounted on one side of the rear surface of the control panel 21. When the air cleaning unit 10 is mounted at an edge portion where the wall surface and the ceiling meet, the portion of the discharge grill 141 of the discharge grill 14 covered by the wall surface is shielded by the shield member 23. Be sure to Then, air is discharged through the front and one side of the discharge grill 141 of the discharge grill 14.

In addition, the air cleaning unit 10 is provided on the upper side of the filter 13 and the fan 15 for sucking indoor air or outdoor air, and detachably coupled to the lower side of the discharge grill 14, The shroud 145 for guiding the flow of indoor or outdoor air sucked by the fan 15, the fan motor 20 for driving the fan, and the fan motor 20 are mounted and exhausted at one side. A rear panel 16 to which the duct and the air supply duct are connected is included.

In addition, the air cleaning unit 10 is coupled to the upper side of the rear panel 16 to the base panel 22 to reinforce the strength of the rear panel 16, and is coupled to one side of the rear panel 16 An installation case 17 for easily coupling the exhaust duct and the air supply duct and a detachable coupling to an upper side of the rear panel 16 to easily mount the rear panel 16 to a wall or a ceiling. An installation bar 18 is included. In detail, the installation case 17 is provided with an inlet 173 through which outdoor air is sucked and an exhaust port 172 through which the indoor air is discharged to the outside. In addition, the rear panel 16 is also provided with an inlet 163 and an exhaust port 162 at points facing the inlet port 173 and the exhaust port 172. Therefore, the indoor air and the outdoor air can enter and exit the inside of the air cleaning unit through the inlets 163 and 173 and the exhaust ports 162 and 172.

Hereinafter, with reference to the drawings, the flow of air made in a clean mode or a ventilation mode in a state where the air cleaning unit is installed indoors will be described.

3 is an exploded perspective view showing a state of air flow in the air cleaning unit in which the ventilation function is set.

Referring to FIG. 3, the air cleaning unit 10 may be attached to the ceiling, and the inlet 173 and the exhaust port 172 of the installation case 17 may be connected to the duct member 30 penetrating the wall. Here, according to the shape of the installation case 17 can also be connected to the duct member 30 penetrating the ceiling, the description thereof will be omitted.

In detail, the duct member 30 includes an intake duct 31 for introducing outdoor air into the air cleaning unit 10 and an exhaust duct 32 for discharging indoor air to the outside.

In more detail, when the ventilation mode is selected, outdoor air is introduced through the air supply duct 31, and the introduced outdoor air is inlet 173 of the installation case 17 and inlet 163 of the rear panel 16. Through the air cleaning unit 10 is introduced into. The outdoor air introduced through the inlets 163 and 173 is filtered from the lower side of the filter 13 stacked on the bottom surface of the discharge grill 14 to the upper side, and the foreign matter is filtered out. In addition, the purified outdoor air passing through the filter 13 moves to the space between the discharge grille 14 and the rear panel 16. In addition, the air passing through the filter 13 by the rotation of the fan 15 is dispersed in the horizontal direction, and is discharged into the room through the discharge grill 141 formed on the side of the discharge grill 14.

Meanwhile, in the ventilation mode, indoor air is sucked into the exhaust grill 148 formed at the side edge portion of the discharge grill 14. Here, the exhaust grill 148 is bent along the edge of the exhaust port 162 at the point where the exhaust port 162 of the rear panel 16 is formed. In addition, the indoor air sucked into the exhaust grill 148 is immediately moved to the exhaust ports 162 and 172, and the indoor air passing through the exhaust ports 162 and 172 is discharged to the outside through the exhaust duct 32. .

4 is a perspective view showing a state of air flow in the air cleaning unit in which the cleaning function is set.

Referring to FIG. 4, when the clean mode is set in the air cleaning unit 10, the flow of outdoor air and indoor air through the air supply duct 31 and the exhaust duct 32 does not occur. This is because the heat exchanger 40, which will be described later, is connected to the duct member 40, and the heat exchanger 40 does not operate in the clean mode. A detailed description thereof will be given later.

In detail, when the clean mode is set, indoor air is sucked into the air cleaning unit 10 through the indoor air intake port 111 formed in the front cover 11. Then, the suctioned indoor air is purified while passing through the filter 13, and then discharged back into the room through the discharge grill 141 formed on the discharge grill 14.

In more detail the flow of air in the clean mode, first, the indoor air is sucked through the indoor air inlet 111 by the driving of the fan 15. The sucked indoor air is filtered while passing through the filter 13, and passes through the orifice 143 to reach the fan 15. Then, the air reaching the fan 15 is dispersed in the horizontal direction, guided by the air guide 144 is discharged back to the room through the discharge grill 141.
It can be seen from FIG. 3 and FIG. 4 that the air conditioning system according to the present invention has the following features.
In detail, in the air conditioning system according to the present invention, the air passes through the filter 13 not only in the clean mode but also in the interlocking operation mode in which ventilation clean is performed at the same time. That is, in the interlocking operation mode, the outdoor air and the indoor air introduced into the air cleaning unit 10 are combined under the filter 13 to pass through the filter. Therefore, if the air volume set in the clean single mode and the ventilation clean interlocking mode is the same, it can be seen that the amount of clean air discharged to the room is the same.

5 is a block diagram showing the configuration of an air conditioning system according to the spirit of the present invention, Figure 6 is a cross-sectional view showing the flow of air in the air conditioning system.

5 and 6, an air conditioning system according to the present invention includes an air cleaning unit 10, an electric heat exchanger 40 connected to the air cleaning unit 10 by a duct member 30, and A controller 90 is included that is connected to the air cleaning unit 10 in a wired or wireless manner so that the ventilation and / or clean mode is selected.

In detail, the duct member 30 includes an air supply duct 31 and an exhaust duct 32 as described above, and one end thereof is connected to the inlet port 173 and the exhaust port 172 of the air cleaning unit 10. And the other end is connected to the heat exchanger 40. In addition, an air supply connection pipe 33 and an exhaust connection pipe 34 are interposed between the duct member 30 and the heat exchanger 40, so that the coupling between the heat exchanger 40 and the duct member 30 is securely performed. Can be done.

In addition, the heat exchanger (30) allows the outdoor air introduced into the room and the indoor air discharged to the outside to exchange heat with each other, thereby preventing the indoor temperature from dropping or increasing by the outdoor air introduced into the room. That is, when the indoor temperature is higher than the outdoor temperature, heat is transferred from the air discharged to the air to the air flowing into the room, thereby narrowing the temperature difference between the indoor temperature and the air flowing into the room, thereby rapidly changing the indoor temperature. You can stop it.

In detail, the heat exchanger 40 is opposed to the exhaust intake port 42 formed at one side of the outer circumferential surface, an air supply discharge port 43 formed to be spaced apart from the exhaust intake port 42 by a predetermined distance, and the exhaust intake port 42. An exhaust discharge port 44 formed at a position, an air supply suction port 45 formed at a position opposed to the air supply discharge port 43, and a heat exchange element 41 are included. In more detail, the total heat exchange element 41 is a device installed inside the heat exchanger 40 and is configured to allow only heat exchange without mixing outdoor air and indoor air introduced into the heat exchanger 40. .

In addition, an exhaust fan 47 mounted inside the conduit connecting the exhaust inlet 42 and the exhaust outlet 44, and an air supply mounted inside the conduit connecting the air supply inlet 45 and the air supply outlet 43 The fan 46 is further included.

In detail, the exhaust inlet 42 is formed on the same side as the air supply outlet 43, and the exhaust outlet 44 is formed on the same side as the air supply inlet 45. The position of the exhaust inlet 42 and the air supply outlet 43 or the positions of the exhaust outlet 44 and the air supply inlet 45 may vary depending on the type of the total heat exchanger 40.

In more detail, the exhaust inlet 42 is connected to the exhaust connection pipe 34 so that indoor air discharged from the air cleaning unit 10 flows. In addition, the air supply outlet 43 is connected to the air supply connection pipe 33 so that outdoor air is supplied to the air cleaning unit 10.

Meanwhile, the user may control the air cleaning unit 10 and / or the heat exchanger 40 to operate alone or in conjunction with each other through an operation button provided in the controller 90. In other words, when the user selects the ventilation mode, the air cleaning unit 10 and the heat exchanger 40 are driven together, and circulation of indoor air and outdoor air is achieved. When the clean mode is selected, only the air cleaning unit 10 is operated so that the indoor air is purified inside the air cleaning unit 10 and discharged back to the room.

In addition, the inside of the air cleaning device 10 is equipped with a CO ₂ sensor or VOC sensor. In detail, the CO ₂ sensor is a sensor for detecting the amount of carbon dioxide contained in the indoor air, and is used as a method capable of measuring the pollution degree of the indoor air. The VOC sensor is a sensor for measuring the concentration of VOC contained in the indoor air, and is used as a sensor for detecting how much harmful substance is contained in the indoor air. Here, VOC (Volatile Organic Compounds) refers to a volatile organic compound, and refers to all organic compounds that exist in the gas phase in the atmosphere, although they may exist in the liquid or solid phase at normal temperature and pressure. When the VOC is contained in a large amount in the air, such as respiratory disease, allergic skin disease, headache, etc., very unpleasant and harmful effects on the human body. In addition, a gas sensor for detecting a gas harmful to the human body other than volatile organic compounds present in the room is mounted inside the air cleaning device 10 or attached to a wall to be connected to the control unit of the air cleaning device 10 by wire. You can do that. In addition, the pollution value of the indoor air may be measured using the detected values detected by the respective sensors, and the ventilation and / or clean function may be automatically performed according to the measured pollution degree.

Hereinafter, the flow of air in the air conditioning system having the above configuration will be described.

First, when a ventilation mode is selected by a user's command or an automatic function by the sensor, the fan 15 mounted in the air cleaning unit 10 and the air supply fan 46 mounted in the heat exchanger 40 and The exhaust fan 47 is rotated. In addition, outdoor air is introduced into the heat exchanger 40 by the rotation of the air supply fan 46, and indoor air is introduced into the heat exchanger 40 by the rotation of the exhaust fan 47. Then, the indoor air and the outdoor air exchange heat while passing through the total heat exchange element 41. The heat exchanged outdoor air is introduced into the air cleaning unit 10 through the air supply duct 31, and the introduced outdoor air passes through the filter 13 of the air cleaning unit 10. The outdoor air passing through the filter 13 is discharged into the room through the discharge grill 141 of the discharge grill 14.

7 is a plan view showing the configuration of a controller constituting the air conditioning system according to the spirit of the present invention.

Referring to FIG. 7, the controller 90 according to the present invention is connected to the air cleaning unit 10 by wire or wirelessly.

In detail, the remote control receiver is mounted on the front of the air cleaning unit 10 to receive an operation command signal transmitted from the controller 90 at the remote control receiver, and the received signal is internal to the air cleaning unit 10. To be transmitted to the control unit mounted on the. The control unit may drive a fan or the like according to the input command.

More specifically, the controller 90 includes a display window 96 indicating an operating state of an air conditioning system, a power key 91 for inputting an operation and a stop command of the system, and a reservation key 92 for reserving an operation time. ), A mode selection key 93 for selecting a ventilation mode or a clean mode, a wind volume control key 94 for controlling the air volume of the fan provided in the air cleaning unit 10 and the heat exchanger 40, and Or a quick / sleep selection key 95 for selecting a power saving function.

Here, rapid function is an added function for two purposes. First, the driving speed of the air supply fan is made larger than the driving speed of the exhaust fan so that the amount of air introduced into the room is greater than the amount of air discharged to the outside. Therefore, the phenomenon that external polluted air flows into the indoor space provided with the air cleaning unit is prevented. Second, the driving speed of the exhaust fan is larger than the driving speed of the air supply fan, so that the amount of air discharged to the outside is greater than the amount of air introduced into the room. Therefore, there is an effect that the polluted air present in the indoor space with the air cleaning unit is quickly discharged to the outside.

In addition, the user presses the power key 91 to operate the air conditioning system, and the mode selection key 93 determines whether the clean function and the ventilation function are singly or interlocked. In addition, the user may adjust the rotation speed of the intake fan and / or the exhaust fan by pressing the air volume control key 94.

In detail, when the operation mode is selected by pressing the mode selection key 93 or when the operation mode is switched, the circulation selection may be performed in order from the ventilation clean mode to the clean mode and the clean mode to the automatic mode. In other words, when the air conditioning system is turned on by pressing the power key 91, the ventilation clean mode is set as the basic operation mode, and the mode selection key 93 is pressed twice to switch to the automatic mode. However, the mode switching order is not limited to the above embodiment and may be variously set.

In addition, even when the air volume is selected through the air volume control key 94, it is possible to circulate selection from the strong wind to the special strong wind, the special strong wind to the weak wind, and the circulation order may be variously combined.

8 is a block diagram schematically illustrating a configuration of an air conditioning system according to the spirit of the present invention.

Referring to FIG. 8, the air conditioning system according to the present invention consists of an air cleaning unit 10, a controller 90, and a total heat exchanger 40, as described above.

In detail, the air cleaning unit 10 includes a signal receiver 101 for receiving various signals transmitted from the controller 90, a controller 102 for receiving a command received from the signal receiver 101, and The driver 103 controlled by the controller 102 is included.

In addition, the air cleaning unit 10 senses the outdoor temperature, the outdoor temperature sensor 108 for transmitting the detected outdoor temperature value to the control unit, the pollution degree sensor 107 for detecting the pollution degree of the room, and the drive unit ( Included is a fan motor 20 that operates by a control signal sent from 103. In detail, the pollution sensor 107 is a CO ₂ sensor for detecting the concentration of carbon dioxide and / or a VOC sensor for detecting the concentration of volatile organic compounds and / or a gas sensor for detecting the concentration of harmful gases other than carbon dioxide and volatile organic compounds Etc. are included.

In addition, the heat exchanger 40 includes a control unit 401 that receives a control signal from the control unit 102 of the air cleaning unit 10, and a driving unit 402 controlled by the control unit 401. In addition, the fan motor 403 is operated by the control signal sent to the driving unit 402. Here, the fan motor 403 includes both an air supply fan and an exhaust fan mounted inside the heat exchanger 40.

By the above configuration, when the user inputs the operation command through the controller 90, the command signal is transmitted to the signal receiving unit 101 of the air cleaning unit 10. The signal received by the signal receiving unit 101 is transmitted to the control unit 102 to control the operation of the driving unit 103 according to the command received from the control unit 102. In addition, the driver 103 receiving the operation command from the controller 102 causes the fan motor 20 to be driven according to the operation command. In addition, the control unit 102 of the air cleaning unit 10 and the control unit 401 of the heat exchanger 40 may be connected by wire or wirelessly to transmit and receive a signal. In addition, it will be apparent to those skilled in the art that the controller 90 and the controller of the air cleaning unit 10 may also be connected by wire or wirelessly.

On the other hand, when the user inputs a command to operate the air cleaning unit 10 and the heat exchanger 40 interlocked through the controller 90, the control unit 102 of the air cleaning unit 10 in the heat exchanger. The operation command is sent to the control unit 40. The control unit 401 receiving the operation command sends an operation command to the driving unit 402 to operate the fan motor 403.

On the other hand, in the air conditioning system according to the present invention, in the clean alone or clean and ventilation interlocking operation state, the user presses the air flow rate selection key 94 or the quick / power saving selection key 95 of the controller 90, the rotation speed of the fan Can be determined or changed. In detail, the rotational speed of the fan selectable by the air volume selection key 94 is divided into 'fast', 'special steel', 'strong', 'weak' and 'sleep'. Then, even if the user selects the same air flow rate, the fan 15 rotates at the air cleaning unit 10 in the clean single operation mode and the fan 15 rotates at the air clean unit 10 in the ventilation and clean interlocking operation modes. The speed is characterized in that it is not set equal.

In detail, in order to match the rotational speed (RPM) of the fan, the signal of the Hall sensor mounted inside the fan motor 20 is determined, and the fan is controlled to approach the RPM according to the set air volume. In addition, the rotation speed of the fan changes the duty ratio of the pulse-width modulation (PWM) signal to match the rotation speed (RPM) of the fan. Here, the duty ratio refers to the ratio of time that the signal is turned ON per period when there is a signal having a constant frequency.

In addition, when the power of the air conditioning system is turned off, the drive of the fan is also turned off, the front cover open detection switch for detecting the opening of the front cover 11 for replacing the filter 13 in the air cleaning unit 10 ( By the short circuit of the figure, when the opening of the front cover is detected, the driving of the fan is stopped by the controller. Then, when the Hall sensor signal of the motor is not input for a predetermined time, preferably about 30 seconds, it is determined that the fan driving stops, and the operation of the air conditioning system is stopped.

Hereinafter, the fan driving speeds of the air cleaning unit and the heat exchanger according to the air volume inputted by the user through the air volume selection key 94 or the quick / sleep selection key 95 will be described.

Table 1 below shows the fan driving speed of the air cleaning unit according to the air volume input by the user when the air conditioning system is operated in the clean single operation mode.

In detail, when the user inputs 'Rapid' through the quick / sleep selection key 95, the fan 15 of the air cleaning unit 10 is set to rotate at a special speed of about 700 RPM. Then, when the user enters the 'special steel' through the air flow selection key 94, the fan 15 is set to the rotational speed 'strong', and set to rotate at approximately 500 RPM. Then, when the 'strong' is set by the user, the fan 15 is set to the rotational speed of 'medium', and is set to rotate to 'about 400 RPM'. When the user inputs 'about', the fan 15 is set to a rotation speed of 'about', is set to rotate at approximately 200 RPM, and when the 'sleep' is input by the quick / sleep selection key 95, the fan 15, the rotational speed is set to 'ultra', and set to rotate at approximately 150 RPM.

Input air volume Rating Fan drive speed (RPM) rapidity Special Lecture 700 Special Lecture River 500 River medium 400 about about 200 Power saving Weakness 150

Table 2 below shows the fan driving speed of the air cleaning unit and the fan air volume rating of the total heat exchanger according to the air volume input by the user when the air conditioning system is operated in the ventilation and clean interlock operation mode.

In detail, when the user inputs 'Rapid' through the quick / sleep selection key 95, the fan 15 of the air cleaning unit 10 is set to rotate at a special speed of about 300 RPM. Then, when the user enters the 'special steel' through the air flow selection key 94, the fan 15 is set to the rotational speed 'strong', and set to rotate at approximately 200 RPM. Then, when the 'strong' is set by the user, the fan 15 is set to the rotational speed is 'medium', and is set to rotate at about 150 RPM. When the user inputs 'about', the fan 15 is set to a rotation speed of 'about', is set to rotate at approximately 60 RPM, and when the 'power saving' is input by the quick / sleep selection key 95, the fan 15, the rotation speed is set to 'ultra', and set to rotate at approximately 40 RPM.

In addition, according to the air volume input by the user, the air flow rate of the fan (46, 47) of the heat exchanger 40 is the same as the air flow rate grade (special steel, steel, medium, weak, ultra weak, etc.) of the air cleaning unit 10. The rotation speed according to the grade may be determined separately or the same as the rotation speed of the fan 15.

Input air volume
Rating Fan drive speed (RPM) of the air cleaning unit Fan of air cleaning unit Fan of heat exchanger rapidity Special Lecture Special Lecture 300 Special Lecture River River 200 River medium medium 150 about about about 60 Power saving Weakness Weakness 40

As can be seen from the above, even if the user inputs the air volume of the same grade, the driving speed of the fan 15 of the air cleaning unit 10 is set differently depending on whether it is a single operation or a linked operation. In the single operation mode, only the fan 15 of the air cleaning unit 10 is driven, but in the interlocking operation mode, the fan 15 of the air cleaning unit 10 and the air supply fan 46 and the exhaust fan 47 of the heat exchanger. ) Are driven together. In other words, since the air supply fan 46 of the heat exchanger 40 is driven simultaneously, the fan 15 of the air cleaning unit 10 has a set amount of air discharged to the room even if the rotational speed is lower than in the case of the single operation mode. Can be kept to fit. In addition, since the driving speed of the fan 15 is lowered, power consumption is reduced.

On the other hand, when the air conditioning system according to the present invention is operated in the ventilation and clean interlocking operation mode, the driving speed of the fan is limited according to the outdoor temperature, so that low temperature outdoor air is excessively introduced and condensation on the air cleaning unit 10. Or an excessive amount of high temperature outdoor air is introduced to prevent the cooling load of the indoor space from being increased.

Table 3 shows the rotational speed control of the fan 15 of the air cleaning unit 10 and the air supply fan 46 and the exhaust fan 47 of the heat exchanger according to the outdoor temperature range.

Drive fan -10 ℃ or less -10 ℃ ~ -8 ℃ 8 ℃ ~ 40 ℃ 40 ℃ ~ 45 ℃ 45 ℃ or more Heat exchanger
Air supply fan OFF Set Set
Set
about Exhaust fan about OFF Fan of air cleaning unit Light Wind (Settings) Set Set Breeze Light Wind (Settings)

 As shown in Table 3, when the air conditioning system is operating clean and ventilation interlocking operation, when the outdoor temperature is -10 ℃ or less, it is considered as the extreme temperature range, the air supply fan of the heat exchanger 40 for the preservation of the indoor heat ( 46) is turned off and only the exhaust fan 47 is driven 'weak'. In addition, even when the outdoor temperature is 45 ℃ or more to view the extreme temperature range, in order to maintain the indoor cooling state, the exhaust fan 47 is to be turned off and only the air supply fan is driven to 'about'. In the extreme temperature range, the fan 15 of the air cleaning unit allows the rotational speed to be determined according to the 'weak air' or the input air volume. In addition, the fan 15 of the air cleaning unit 10 and the air supply fan 46 and the exhaust fan 47 of the heat exchanger are maintained so that the amount of air inputted by the controller 90 is maintained within a temperature range between 10 ° C and 45 ° C. Rotational speed is determined. However, of course, if the air volume is selected using the air volume selection key 94 of the controller 90 even in the extreme temperature range, the fan can be driven at the selected air volume.

 9 is a flowchart illustrating a fan air flow determination process of the air conditioning system according to the inventive concept.

Referring to FIG. 9, the fan air volume of the air conditioning system according to the present invention is determined differently according to whether the fan is clean alone or ventilated and clean interlocked, and the fan air volume is determined differently according to the external temperature. .

In detail, the user applies power 210 and sets an operation mode 211 to cause the air conditioning system to be driven. Then, the fan is driven 212 at the basic air volume given to the set operation mode. Here, not only the user can directly select the operation mode, but also the basic operation mode and the fan air flow rate are set in the control unit, so that when the power is applied to the system, the driving mode and fan air flow rate may be automatically set. In addition, in the driving of the fan, when the power is applied to the system, the fan may be driven only when the user selects the air flow in addition to automatically operating the basic air flow rate.

Meanwhile, in the state where the fan of the air conditioning system is driven by the above process, the control unit 102 of the air cleaning unit 10 determines whether or not the air volume change is input from the controller 90. .

In detail, when it is determined that the change in the air volume of the fan is not input, the operation is performed at the preset air volume 220, and the controller determines whether the power-off command of the air conditioning system is input again (S219). When it is determined that the air volume change is input, the controller determines the operation mode of the air conditioning system. In other words, if it is determined whether the air conditioning system is operated in the clean single operation mode (214), and if it is determined that the air conditioning system is operated in the single operation mode, the fan 15 of the air cleaning unit 10 may be configured according to the input air volume. The driving speed is rotated (221). In addition, while the fan 15 rotates according to the input air volume, the controller 102 repeatedly performs a process 213 of determining whether a command for changing the air volume through the controller 94 has been input.

In addition, if it is determined by the controller that the air conditioning system is not operated in the clean single operation mode, the air conditioning system determines that the air conditioning system is operated in the ventilation and clean interlock operation modes. In addition, the outdoor temperature is sensed through the outdoor temperature sensor 108 connected to the controller 102 (215) and transferred to the controller. In addition, it is determined whether the outdoor temperature is included in the extreme temperature region through the temperature value transmitted to the controller 102 (216).

In detail, when the temperature sensed by the outdoor temperature sensor 108 corresponds to the extreme temperature range, the air supply fan 46 and the exhaust fan 47 of the heat exchanger 40 are driven to the extreme temperature range value (217). ). Then, the fan 15 of the air cleaning unit 10 is driven by the mild wind (218). As described above, the extreme temperature range value means that the air supply fan 46 of the total heat exchanger 40 is turned off and the exhaust fan 47 is driven 'about' when the outdoor temperature is -10 ° C. or lower. In addition, when the outdoor temperature is more than 45 ℃ means that the exhaust fan 47 is turned off, the air supply fan is driven to 'about'.

In addition, while the outdoor temperature corresponds to the extreme temperature range and the fan speeds of the heat exchanger 40 and the air cleaning unit 10 are driven according to the set values, the control unit determines whether a power-off command of the air conditioning system is input ( 219).

On the other hand, if it is determined that the outdoor temperature does not correspond to the extreme temperature range, the fan speed is changed and rotates according to the input air volume (222). In addition, even if the fan speed is changed and rotated according to the outdoor temperature change, the amount of air discharged to the room is kept constant according to the set air volume.
Meanwhile, while the fan is rotating at the changed wind speed, the controller determines whether a power-off command of the air conditioning system is input (219).

In detail, the controller determines whether a power off command is input (219), and when it is determined that the power off command is input, the operation of the system is stopped. On the contrary, if it is determined that the power off command is not input, the process of determining whether the air volume change command is input 213 is repeatedly performed.

By the control method as described above, the fan 15 of the air cleaning unit and / or the fan 46, 47 of the total heat exchanger 40, depending on whether it is a single operation or a linked operation, or whether the outdoor environment is an extreme temperature range. The driving speed of is appropriately determined, and the indoor air is constantly discharged to the room at a predetermined air flow rate, thereby having the advantage that the indoor environment can be maintained in an optimal state.

By the fan air volume control method of the air conditioning system according to the present invention having the configuration as described above, there is an effect that the power consumption according to the fan drive of the air conditioning system is reduced.

In other words, even when the air volume of the same grade is selected by the air flow selection key, the fan driving speed of the air cleaning unit is lower than in the case of the clean single operation mode in the ventilation and the clean interlocking operation mode, thereby reducing power consumption for driving the fan. It is effective.

Claims (13)

As a control method of the air conditioning system that includes an air cleaning unit that circulates indoor air for clean operation and an electric heat exchanger that exchanges indoor and outdoor air for ventilation operation, The power is supplied to the air conditioning system, and the fan is driven according to the mode and the air volume set in the clean single operation mode and the ventilation clean interlock operation mode, and according to whether the air volume change command is input or the state of the operation mode. The fan or the rotational speed of the air supply fan and the exhaust fan of the heat exchanger is changed, Regardless of the mode switching, the fan of the air cleaning unit, the air supply fan of the heat exchanger, and the like so that the sum of the amount of air circulated and discharged into the room and the amount of air discharged into the room is the set air volume. And a rotation speed of at least one fan of the exhaust fan is changed. The method of claim 1, In the step of driving the fan according to the set mode and the air flow rate, the fan rotational volume control method of the air conditioning system, characterized in that the operation mode or the initial rotational speed of the fan is determined by the user or automatically determined by the control unit. The method of claim 1, If there is no air flow change command, the air flow is operated at a predetermined air flow rate, And when the air volume change command is received, the air volume is determined in consideration of an operation mode of the air conditioning system. The method of claim 3, wherein In the case of the air volume change command and the clean single operation mode, And the fan rotation speed of the air cleaning unit is changed to the fan rotation speed of the air cleaning unit corresponding to the set air flow rate. The method of claim 3, wherein In the case of the air volume change command and the ventilation clean interlocking operation mode, The outdoor temperature is detected by the outdoor temperature sensor, The rotational speed of the fan of the air cleaning unit and the supply and exhaust fan of the total heat exchanger is changed to the rotational speed of the fan of the air cleaning unit and the supply and exhaust fan of the heat exchanger corresponding to the sensed outdoor temperature. Fan air volume control method. 6. The method of claim 5, And when the detected outdoor temperature falls within an extreme temperature range, any one of the supply / exhaust fans of the total heat exchanger is stopped and the other is driven by weak wind. 6. The method of claim 5, If the sensed outdoor temperature corresponds to the extreme temperature range during cooling, the air supply fan of the heat exchanger is driven by the mild wind and the exhaust fan is stopped, And when the detected outdoor temperature corresponds to the extreme temperature range during heating, the air supply fan of the heat exchanger is stopped and the exhaust fan is driven by weak wind. 6. The method of claim 5, And when the detected outdoor temperature does not correspond to the extreme temperature range, the fan rotation speed of the fan is changed by the air flow according to the air flow change command. 6. The method of claim 5, If the detected outdoor temperature is below -10 ° C or above 45 ° C, it is determined to be an extreme temperature range. When the outdoor temperature is below -10 ° C, the exhaust fan of the heat exchanger is light wind, the air supply fan is stopped, and the outdoor temperature is above 45 ° C. If the exhaust fan of the total heat exchanger is stopped, the air supply fan is a fan air flow control method of the air conditioning system, characterized in that driven by weak air. The method of claim 1, If the set air volume is the same even if the operation modes are different, in order to ensure that the clean air volume discharged to the room is the same, the fan speed in the case of clean single operation and the fan speed in the case of ventilation and clean interlocking operation are set differently. Fan air volume control method of the air conditioning system, characterized in that the. 11. The method of claim 10, When the operation mode is changed to the clean single operation mode while the set air volume is the same, the fan air flow control method of the air conditioning system, characterized in that the supply / exhaust fan of the heat exchanger is stopped and the fan speed of the air cleaning unit is increased. . The method of claim 1, When the operation mode is changed to the ventilation clean interlocking mode while the set air volume is the same, the fan air flow control method of the air conditioning system, wherein the supply / exhaust fan of the heat exchanger is operated and the fan speed of the air cleaning unit is reduced. . The method of claim 1,  And if it is determined that there is a power-off command, the driving of the air conditioning system is stopped, and if it is determined that there is no power-off command, the process of determining whether or not the air volume change command is input is further included. How to control fan air volume in air conditioning system.

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