KR102473104B1 - Air conditioning system - Google Patents

Abstract

An air conditioning system comprises: a housing including at least one inlet through which air is introduced, and at least one outlet through which air is discharged to the outside; an air blower located in the housing, and forming a flow of the air moving in a direction from the at least one inlet to the at least one outlet; a sensor measuring a change in pressure or a flow rate of the air in the housing; and a control unit electrically connected to the air blower and the sensor, and controlling an electrical signal applied to the air blower. The control unit can generate a load curve of the air conditioning system based on a measurement result of the sensor and a characteristic curve of the air blower when at least two different voltages are applied to the air blower, calculate a total static pressure loss corresponding to a design air volume based on the load curve of the air conditioning system, and calculate a set voltage value of the air blower based on the characteristic curve of the air blower, the design air volume and the calculated total static pressure loss. Therefore, the present invention is capable of reducing installation costs and shortening installation time.

Description

Air conditioning system {AIR CONDITIONING SYSTEM}

Embodiments relate to an air conditioning system, and more particularly, to an air conditioning system capable of setting a design air volume without performing TAB (Testing, Adjusting and Balancing) work.

An air conditioning system is a system for maintaining a room in a comfortable state by performing an operation of adjusting the temperature and humidity of a compartmentalized space such as a building or an operation of exchanging indoor and outdoor air.

For example, an air conditioning system circulates indoor air to remove indoor moisture, cleans operation to circulate indoor air to remove indoor fine dust, or supplies outdoor air to the room and supplies indoor air to the outdoors. It is possible to maintain indoor air in a pleasant state by performing a ventilation operation that controls the concentration of CO ₂ in the room by discharging it.

The air conditioning system can supply air to the room through a duct (or 'diffuser'). Since the size and/or shape of the duct is different for each environment in which the air conditioning system is installed, the air conditioning system External static pressure (or 'external static pressure') can vary greatly.

Accordingly, in order to supply a required air volume to a desired place through the air conditioning system, it is essential to adjust the air volume according to the installation environment before operating the air conditioning system.

Conventionally, when installing an air conditioning system, it is common to perform a TAB (Testing, Adjusting and Balancing) operation to adjust the air volume of the air conditioning system to suit the installation environment.

TAB works by measuring the air volume of the duct (or 'diffuser') through a Pitot static pressure tube or an anemometer in the process of commissioning the air conditioning system, and controlling the rotation speed of the blower or the operation of the damper according to the air volume measurement result. , means the operation of adjusting the air volume supplied from the air conditioning system to the set air volume.

However, in the case of the TAB work, since it is necessary to measure the air volume of the duct located mainly on the ceiling, the measurement itself is not easy, so there is a problem that the work can take a lot of time and money.

In addition, in the case of the TAB operation, since the operator measures the air volume by inserting a Pitot static pressure tube or an anemometer into the duct, the air volume measurement result varies depending on the air flow in the duct, making it difficult to secure the precision of the air volume measurement result. there was.

Accordingly, the present disclosure adjusts the voltage to control speed (VSP) applied to the blower based on the measurement result of the sensor capable of measuring the change in pressure or the flow rate of air, thereby setting the air volume without performing the TAB operation. It is intended to solve the above problems by providing an air conditioning system capable of setting the.

The problems to be solved through the embodiments of the present disclosure are not limited to the above-mentioned problems, and problems not mentioned are clearly understood by those skilled in the art from this specification and the accompanying drawings to which the embodiments belong. It could be.

An air conditioning system according to an embodiment is located in a housing including at least one inlet through which air is introduced and at least one outlet through which air is discharged, and moves in a direction from the at least one inlet to at least one outlet. A blower for forming the flow of air, a sensor for measuring the pressure change inside the housing or the flow rate of air, and a control unit electrically connected to the blower and the sensor and controlling an electrical signal applied to the blower, the control unit is a blower A load curve of the air conditioning system is generated based on the measurement result of the sensor when at least two different voltages are applied and the characteristic curve of the blower, and the total static pressure corresponding to the design air volume is generated based on the load curve of the air conditioning system. The loss value is calculated, and the set voltage value of the blower may be calculated based on the characteristic curve of the blower, the design air volume, and the calculated total static pressure loss value.

In one embodiment, the controller may adjust the voltage applied to the blower based on the calculated set voltage value of the blower.

According to one embodiment, the sensor may include a differential pressure sensor for measuring a differential pressure between an inlet and an outlet of the blower.

In one embodiment, the controller may generate a load curve of the air conditioning system based on a differential pressure between an inlet and an outlet of the blower when at least two different voltages are applied to the blower and a characteristic curve of the blower.

According to one embodiment, the air conditioning system may further include a memory that is electrically connected to the controller and stores characteristic curves of the blower.

According to another embodiment, the air conditioning system may further include a heat exchange unit disposed in the housing and exchanging heat with air introduced into the housing through at least one inlet.

In one embodiment, the sensor may include a differential pressure sensor for measuring a differential pressure between an inlet and an outlet of the heat exchange unit.

In one embodiment, the control unit controls the pressure difference between the inlet and outlet of the heat exchange unit when at least two different voltages are applied to the blower and the pressure change amount of the heat exchange unit according to the flow rate of air passing through the inside of the housing. An air volume of the flowing air may be calculated, and a load curve of the air conditioning system may be generated based on the calculated air volume and the characteristic curve of the blower.

According to another embodiment, the sensor may include a flow rate sensor that measures the flow rate of air flowing inside the housing.

In one embodiment, the control unit calculates the air volume of the air flowing inside the housing based on the flow rate of air measured by the sensor when at least two different voltages are applied to the blower, and calculates the air volume and characteristics of the blower. Based on the curve, the load curve of the air conditioning system can be created.

According to one embodiment, the air conditioning system may further include a dust collecting filter adsorbing foreign substances in the air flowing inside the housing.

In one embodiment, when the controller performs the test run mode, the first differential pressure of the inlet and outlet of the blower obtained through the sensor and the inlet and outlet of the blower obtained through the sensor when a specified time elapses after performing the trial run mode It is possible to provide a user notification about the replacement time of the dust collecting filter based on the second differential pressure of the .

Specifically, the control unit may provide a user notification regarding the replacement time of the dust collecting filter based on the determination that the difference between the second differential pressure and the first differential pressure is equal to or greater than a specified value.

In one example, the user notification may include at least one of a visual notification, an auditory notification, and a tactile notification.

In the air conditioning system according to the above-described embodiments, after installing the air conditioning system, it is possible to set a design air volume without performing a TAB operation, thereby reducing installation cost and shortening installation time.

In addition, the air conditioning system according to the above-described embodiments can ensure that the dust collection filter is replaced in a timely manner by determining whether the dust collection filter needs to be replaced and notifying the user of the replacement time of the dust collection filter.

In addition, the air conditioning system according to the above-described embodiments allows the dust collection filter to be replaced in a timely manner, thereby increasing the service life of the dust collection filter and preventing the air conditioning system from deteriorating in efficiency due to the dust collection filter.

The effects of the embodiments are not limited to the above-mentioned effects, and effects not mentioned will be clearly understood by those skilled in the art to which the embodiments belong from this specification and the accompanying drawings.

1 is a perspective view schematically illustrating components of an air conditioning system according to an exemplary embodiment.
2 is a block diagram illustrating some components of an air conditioning system according to an exemplary embodiment.
FIG. 3 is a diagram illustrating pressure changes according to positions of air sequentially passing through a first duct, an inside of an air conditioning system, and a second duct.
4 is a flowchart illustrating operations for adjusting air volume of an air conditioning system according to an exemplary embodiment.
5A is a graph for explaining an operation of calculating an air volume of an air conditioning system based on a measurement result of a sensor and a characteristic curve of a blower.
5B is a graph for explaining an operation of generating a load curve of the air conditioning system using the air volume of the air conditioning system.
5C is a graph for explaining an operation of calculating a voltage loss value corresponding to a design air volume through a load curve.
5D is a diagram for explaining an operation of calculating a set voltage value of the blower to satisfy a set air volume and voltage loss value through a characteristic curve of the blower.
6 is a flowchart illustrating operations for adjusting air volume of an air conditioning system according to another embodiment.
FIG. 7 is a diagram illustrating pressure changes according to positions of air sequentially passing through a first duct, an inside of an air conditioning system, and a second duct.
8 is a flowchart illustrating operations for adjusting air volume of an air conditioning system according to another embodiment.
9 is a block diagram illustrating some components of an air conditioning system according to an exemplary embodiment.
FIG. 10 is a flowchart illustrating operations for providing a user notification regarding replacement of a dust collecting filter in an air conditioning system according to the embodiment shown in FIG. 9 .

The terms used in the embodiments have been selected from general terms that are currently widely used as much as possible while considering the functions in the present disclosure, but they may vary depending on the intention or precedent of a person skilled in the art, the emergence of new technologies, and the like. In addition, in a specific case, there is also a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the invention. Therefore, terms used in the present disclosure should be defined based on the meaning of the term and the general content of the present disclosure, not simply the name of the term.

In the present disclosure, when a part "includes" a certain component, it means that it may further include other components without excluding other components unless otherwise stated. In addition, terms such as "-unit" and "-module" described in this disclosure refer to a unit that processes at least one function or operation, which may be implemented as hardware or software or a combination of hardware and software. .

As used in this disclosure, when an expression such as “at least one of” precedes an array of components, it modifies the array of components as a whole and not each individual component. For example, the expression "at least one of a, b, and c" should be interpreted as including a, b, c, or a and b, a and c, b and c, or a and b and c. do.

Hereinafter, with reference to the accompanying drawings, the embodiments of the present disclosure will be described in detail so that those skilled in the art can easily carry out the embodiments of the present disclosure. can be implemented and is not limited to the embodiments described herein.

1 is a perspective view schematically illustrating components of an air conditioning system according to an exemplary embodiment.

Referring to FIG. 1 , an air conditioning system 100 according to an embodiment performs an operation of adjusting the temperature and humidity of indoor air in an air conditioning space, or controls indoor air and air outside the air conditioning space (hereinafter referred to as 'outdoor air'). ) may mean a system capable of changing the state of indoor air by performing an operation of exchanging air.

For example, the air conditioning system 100 controls the temperature and humidity of indoor air by performing at least one operation mode of heating and cooling operation, dehumidification operation, cleaning operation, and ventilation operation, or the concentration of fine dust in the indoor air or CO ₂ concentration can be reduced.

In the present disclosure, a 'cooling/heating operation' may refer to an operation of adjusting the temperature of indoor air by performing heat exchange, and a 'dehumidification operation' may refer to an operation of removing moisture from the indoor air by circulating the indoor air.

In addition, 'clean operation' refers to an operation that circulates indoor air to remove fine dust contained in indoor air, and 'ventilation operation' means that indoor air is discharged to the outdoors and outdoor air is supplied to the indoor to improve indoor air quality. It may refer to an operation that adjusts the CO ₂ concentration, and the corresponding expressions may be used in the same meaning below.

An air conditioning system 100 according to an embodiment may include a housing 101, a heat exchanger 110, a dehumidifying rotor 120, and a blower 130. Components of the air conditioning system 100 are not limited to the above-described embodiments, and depending on embodiments, other components other than the above-described components may be added, or at least one of the above-described components (e.g., a dehumidifying rotor ( 120)) may be omitted.

The housing 101 may form the overall appearance of the air conditioning system 100, and is formed in an empty shape to provide a space (or 'placement space') in which components of the air conditioning system 100 can be placed. can provide For example, the heat exchange unit 110, the dehumidifying rotor 120, and the blower 130 may be disposed inside the housing 101, but the components disposed inside the housing 101 are not limited thereto.

According to one embodiment, the housing 101 may be formed in a rectangular pillar shape as a whole as shown in FIG. 1, but the shape of the housing 101 is not limited to the illustrated embodiment. In another embodiment, the housing 101 may be formed in a cylindrical shape as a whole.

The housing 101 may include at least one inlet port 101i or 102i and at least one outlet port 101e or 102e for air flow between the outside of the air conditioning system 100 and the inside of the housing 101. have.

According to one embodiment, the housing 101 has a first inlet 101i through which return air (RA) of the air conditioning space is introduced into the housing 101 and the temperature and/or A first outlet 101e for discharging humidity-controlled air into an indoor space may be included.

For example, the first inlet 101i may be connected to the indoor space through the first duct 11, and the first outlet 101e may be connected to the indoor space through the second duct 12. Accordingly, the indoor air RA of the indoor space may flow into the inside of the housing 101 through the first duct 11 and the first inlet 101i, and the indoor air supply SA inside the housing 101 , supply air) may be discharged into the indoor space through the first outlet 101e and the second duct 12.

According to another embodiment, the housing 101 has a second inlet 102i through which outdoor air (OA) of the outdoor space is introduced into the housing 101 and humidity and temperature inside the housing 101 are reduced. A second outlet 102e for discharging the conditioned air to an outdoor space may be further included.

For example, the second inlet 102i may be connected to the outdoor space through the third duct 13, and the second outlet 102e may be connected to the outdoor space through the fourth duct 14. Accordingly, the outdoor air (OA) of the outdoor space may flow into the inside of the housing 101 through the third duct 13 and the second inlet 102i, and the outdoor exhaust air (EA) inside the housing 101 may be introduced. , exhaust air) may be discharged to the outdoor space through the second outlet 102e and the fourth duct 14.

The heat exchange unit 110 is located inside the housing 101 and can perform heat exchange with air introduced into the housing 101 through the first inlet 101i and/or the second inlet 102i. .

According to an embodiment, the heat exchanger 110 includes a first heat exchanger 111 and a second inlet that exchange heat with room air RA introduced into the housing 101 through the first inlet 101i. It may include a second heat exchanger 112 that exchanges heat with outdoor air (OA) introduced into the housing 101 through (102i).

In one example, the first heat exchanger 111 may be an air cooler that cools passing air by using latent heat of an evaporator of a heat pump. Accordingly, the first heat exchange unit 111 may lower the temperature and humidity of the air passing through the first heat exchange unit 111, but is not limited thereto.

In another example, the second heat exchanger 112 may be an air heater including a condenser of a heat pump. Accordingly, the second heat exchange unit 112 may increase the temperature of the air passing through the second heat exchange unit 112, but is not limited thereto.

The dehumidifying rotor 120 may be rotatably disposed in the inner space of the housing 101, and one area (or 'regeneration area') of the dehumidifying rotor 120 discharges moisture to the passing air, and the dehumidifying rotor ( 120) may adsorb water vapor contained in the passing air.

For example, some of the air introduced into the housing 101 through the first inlet 101i and/or the second inlet 102i may pass through the regeneration area of the dehumidifying rotor 120 and be humidified. As another example, another part of the air introduced into the housing 101 through the first inlet 101i and/or the second inlet 102i may pass through the dehumidifying area of the dehumidifying rotor 120 and be dehumidified.

That is, the air conditioning system 100 according to an embodiment can control the temperature or humidity of air introduced into the housing 101 through the above-described heat exchanger 110 and/or the dehumidifying rotor 120, Air whose temperature or humidity is controlled may be supplied to an indoor space or an outdoor space through the first outlet 101e and/or the second outlet 102e.

The blower 130 is located inside the housing 101, and is a source of air that allows the air introduced into the housing 101 to move in a direction toward the first outlet 101e and/or the second outlet 102e. flow can be formed.

According to one embodiment, the blower 130 is a first blower 131 for moving a part of the air introduced into the housing 101 in a direction toward the first outlet 101e and the inside of the housing 101 It may include a second blower 132 for moving another part of the air introduced into the direction toward the second outlet (102e).

The air whose temperature or humidity is controlled by the heat exchanger 110 and/or the dehumidifying rotor 120 is discharged to the indoor space through the first discharge port 101e by the flow of air generated by the first blower 131, or , The air flow generated by the second blower 132 may be discharged to the outdoor space through the second outlet 102e.

According to one embodiment, the blower 130 may include a fan and a BLDC motor (brushless DC motor) that provides power for rotating the fan, and the air conditioning system 100 receives an electrical signal applied to the BLDC motor. By adjusting, the amount of air discharged from the air conditioning system 100 (or 'air volume') may be adjusted.

For example, the air conditioning system 100 increases the voltage (VSP, voltage to control speed) applied to the BLDC motor from the air conditioning system 100 to the second duct 12 and/or the fourth duct 14. The amount of air discharged from the air conditioning system 100 to the second duct 12 and/or the fourth duct 14 may be reduced by increasing the amount of air discharged or by lowering the voltage applied to the BLDC motor.

Depending on the environment in which the air conditioning system 100 is installed, the length, shape, and/or cross-sectional area of the ducts (eg, the first duct 11 and the second duct 12) may vary, and thus the static pressure outside the cabin may vary. As a result, In order to supply a desired amount of air to a desired place through the air conditioning system 100, air volume adjustment suitable for the installation environment is required.

In the present disclosure, 'outside static pressure' may refer to static pressure applied to the outside of the air conditioning system 100, and under the condition that the voltage applied to the blower 130 is constant, the air conditioning system 100 The amount of air discharged may vary.

The air conditioning system 100 according to an embodiment measures a change in pressure or a flow rate of air introduced into the housing 101 through a sensor (not shown), and based on the measurement result of the sensor, the air conditioning system A voltage applied to the blower 130 may be controlled so that the amount of air discharged from the 100 meets the design air amount.

Hereinafter, with reference to FIGS. 2 to 8 , operations for adjusting the air volume of the air conditioning system 100 to the design air volume will be described in detail.

FIG. 2 is a block diagram showing some components of an air conditioning system according to an embodiment, and FIG. 3 shows pressure changes according to positions of air sequentially passing through a first duct, an inside of the air conditioning system, and a second duct. It is a drawing that represents

At this time, FIG. 3 shows the air introduced into the air conditioning system 100 through the first duct 11 passes through the heat exchanger 110, the dehumidifying rotor 120, and/or the first blower 131. Then, in the process of being discharged to the indoor space through the second duct 12, the pressure change according to the flow position of the air is shown.

Referring to FIG. 2 , an air conditioning system 100 according to an exemplary embodiment may include a blower 130 (eg, the blower 130 of FIG. 1 ), a sensor 200, and a controller 300. Elements of the air conditioning system 100 according to an embodiment may be the same as or similar to at least one of the elements of the air conditioning system 100 according to the embodiment shown in FIG. should be omitted.

The sensor 200 may measure a pressure change inside the housing of the air conditioning system 100 (eg, the housing 101 of FIG. 1 ) and/or a flow rate of air flowing inside the housing of the air conditioning system 100. can

According to one embodiment, the sensor 200 may include a differential pressure sensor for measuring a difference (or differential pressure) between a pressure of air flowing inside the housing at one point and a pressure at another point. For example, air pressure may change while air introduced into the air conditioning system 100 passes through components of the air conditioning system 100, and the sensor 200 may change such air pressure. change can be measured.

Referring to FIG. 3 , indoor air RA of the indoor space may be introduced into the housing of the air conditioning system 100 through the first duct 11, and the indoor air RA may be introduced into the first duct 11. ), the pressure of the indoor air (RA) decreases. For example, the pressure of the room air RA may decrease by P _RA while passing through the first duct 11 .

The air introduced into the housing of the air conditioning system 100 through the first duct 11 passes through the heat exchange unit 110 and/or the dehumidifying rotor 120, and in the process, the air pressure decreases. do. For example, the pressure of the air introduced into the housing is reduced by the static pressure P _i in the cabin while passing through the heat exchange unit 110 and/or the dehumidifying rotor 120 .

In the present disclosure, 'in-flight static pressure' may refer to a static pressure applied inside the air conditioning system 100, and specifically, the pressure lost while air passes through internal components of the air conditioning system 100. can mean

The air passing through the heat exchange unit 110 and/or the dehumidifying rotor 120 is generated by the flow of air formed by the first blower 131 at the inlet of the first blower 131 (eg, point A in FIG. 3 ). can be introduced into At this time, the first blower 131 may increase the pressure of the air passing through the first blower 131 so that the air introduced into the inlet of the first blower 131 is discharged to the second duct 12. have.

For example, the first blower 131 converts the pressure of the air passing through the first blower 131 to the total static pressure so that the air introduced into the inlet of the first blower 131 can be discharged to the second duct 12. It can be increased by the loss value (eg, P _t in FIG. 3 ).

In the present disclosure, the 'total static pressure loss value (P _t )' is the sum of the in-flight static pressure (P _i ) and the static pressure outside the aircraft (P _o ) by the duct (eg, the first duct 11 and the second duct 12) In addition, the air pressure of the blower 130 passing through the blower 130 must be increased by the total static pressure loss value P _t so that the air can be discharged to the outside of the air conditioning system 100 .

After passing through the first blower 131, the air discharged to the outlet of the first blower 131 (eg, point B in FIG. 3) (or 'indoor supply air (SA)') passes through the second duct 12. It can move along and be supplied to the indoor space, and the pressure is reduced while the indoor supply air (SA) passes through the second duct 12 . For example, the pressure of the indoor supply air (SA) is reduced by P _SA while passing through the second duct 12 .

In the present disclosure, 'inlet' refers to an area through which air flows into the inside of a component (eg, the first blower 131), and 'outlet' refers to an area through which air passing through a component is discharged to the outside of the component. It may mean, and the corresponding expressions may be used in the same meaning below.

In the drawings, only the pressure change of the air sequentially passing through the first duct 11, the heat exchanger 110 to the dehumidifying rotor 120, the first blower 131, and the second duct 12 is shown, but the 3 ducts (eg, the third duct 13 in FIG. 1), the heat exchange unit 110 to the dehumidifying rotor 120, the second blower (eg, the second blower 132 in FIG. 1), and the fourth duct (eg, : The pressure change of the air sequentially passing through the fourth duct 14 of FIG. 1 may be substantially the same as or similar to the air pressure change shown in FIG. 3 .

In this way, the air introduced into the air conditioning system 100 passes through the heat exchange unit 110, the dehumidifying rotor 120, and/or the blower 130 located inside the air conditioning system 100, and the pressure is reduced. This may change, and the sensor 200 may detect the aforementioned change in air pressure.

In one example, the sensor 200 may measure a pressure difference between the inlet of the blower 130 (eg, point A in FIG. 3 ) and the outlet of the blower 130 (eg, point B in FIG. 3 ), and the sensor Information on the pressure difference or differential pressure between the inlet and outlet of the blower 130 measured in 200 may be delivered or transmitted to the control unit 300 electrically connected to the sensor 200 .

However, the measurement target of the sensor 200 is not limited to the above-described embodiment, and depending on the embodiment, the sensor 200 may be used to measure the pressure difference between the inlet and outlet of the heat exchange unit 110 or the inlet of the dehumidifying rotor 120. It is also possible to measure the pressure difference between the outlet and the outlet.

According to another embodiment, the sensor 200 may include a flow rate sensor for measuring the flow rate of air passing through the blower 130, and the information on the flow rate of air measured by the sensor 200 is stored in the control unit 300. ) can be forwarded or transmitted.

The controller 300 may control overall operations of the air conditioning system 100 . For example, the controller 300 may be electrically connected to the blower 130 and the sensor 200, and may control the operation of the blower 130 based on a measurement result of the sensor 200. For example, the controller 300 may control the rotational speed of the blower 130 by adjusting an electrical signal applied to the blower 130, but is not limited thereto.

According to an embodiment, when the air conditioning system 100 is installed and the test run mode is performed, the control unit 300 controls an electrical signal applied to the blower 130 based on the measurement result of the sensor 200, The air volume of the air conditioning system 100 may be adjusted to the design air volume.

For example, the controller 300 may control the voltage applied to the blower 130 to adjust the air volume of the air conditioning system 100 to a design air volume. That is, the control unit 300 may adjust the amount of air flow of the air conditioning system 100 by controlling the voltage applied to the blower 130 to adjust the magnitude of current flowing through the blower 130 .

As another example, the controller 300 may control the pulse width of an electrical signal (eg, a pulse signal) applied to the blower 130 to adjust the air volume of the air conditioning system 100 to the design air volume. That is, the control unit 300 may adjust the air volume of the air conditioning system 100 through pulse width modulation (PWM), but is not limited thereto.

Hereinafter, an embodiment in which the control unit 300 controls the voltage applied to the blower 130 to adjust the air volume of the air conditioning system 100 will be described, but the control unit 300 controls the electrical voltage applied to the blower 130. It is obvious that the air volume of the air conditioning system 100 can be adjusted by controlling the pulse width of the signal.

The control unit 300 receives information about pressure changes and/or flow rates of air flowing inside the housing of the air conditioning system 100 from the sensor 200, and receives the received information and pre-stored characteristics of the blower 130. A load curve of the air conditioning system 100 may be generated based on the curve.

In the present disclosure, the 'characteristic curve of the blower' is the static pressure applied to the blower 130 according to the voltage applied to the blower 130 (or the 'pressure difference between the inlet and outlet of the blower 130') and the discharge from the blower 130. It may mean a curve representing the relationship between the amount of air (or 'air volume').

In addition, in the present disclosure, a 'load curve' may mean a curve representing a correlation between the amount of air (or 'air volume') discharged from the air conditioning system 100 and the total static pressure loss value, and the air conditioning system 100 ), the total static pressure loss value may increase as the air volume discharged from the air increases. Accordingly, in order to increase the amount of air discharged from the air conditioning system 100, the static pressure applied to the blower 130 must be increased.

At this time, the characteristic curve of the blower 130 may be stored in the controller 300 and/or the memory 310 electrically connected to the controller 300, and the controller 300 may store characteristics of the blower 130 in advance. A load curve of the air conditioning system 100 may be generated based on the curve.

The control unit 300 may calculate a total static pressure loss value (eg, P _t in FIG. 3 ) corresponding to the design air volume of the air conditioning system 100 through the generated load curve. For example, the controller 300 may calculate a total static pressure loss value for the air volume discharged from the air conditioning system 100 to be the design air volume through the load curve.

In the present disclosure, 'design air volume' may refer to an air volume set in a design process for normal operation of the air conditioning system 100, and the design air volume is the installation environment of the air conditioning system 100 or the air conditioning system 100. It can vary depending on the type.

After calculating the total static pressure loss value through the load curve, the control unit 300 calculates the set voltage value of the blower 130 to satisfy both the design air volume and the calculated total static pressure loss value through the characteristic curve of the blower 130. It is possible to calculate and control the voltage applied to the blower 130 based on the calculated set voltage value.

For example, the controller 300 may control a set voltage value to be applied to the blower 130 so that a design air volume is discharged from the air conditioning system 100 .

That is, the air conditioning system 100 according to an embodiment generates a load curve of the air conditioning system 100 based on the measurement result of the sensor 200 and the characteristic curve of the blower 130, and applies the load curve to the generated load curve. Based on this, the amount of air discharged from the air conditioning system 100 may be adjusted to the design air amount by adjusting the magnitude of the voltage applied to the blower 130 .

Accordingly, the air conditioning system 100 according to an embodiment does not perform a TAB operation of repeatedly measuring the air volume of the duct through the pitot static pressure tube or the anemometer and controlling the rotational speed of the blower 130 based on the measurement result. It is possible to precisely set the air volume of the air conditioning system 100 to the design air volume.

4 is a flowchart illustrating operations for adjusting air volume of an air conditioning system according to an exemplary embodiment, and FIG. 5A is a flowchart illustrating an operation of calculating an air volume of an air conditioning system based on a measurement result of a sensor and a characteristic curve of a blower. FIG. 5B is a graph for explaining an operation of generating a load curve of the air conditioning system using the air volume of the air conditioning system.

In addition, FIG. 5C is a graph for explaining an operation of calculating a voltage loss value corresponding to a design air volume through a load curve, and FIG. 5D is a blower setting to meet a set air volume and voltage loss value through a characteristic curve of the blower. It is a diagram for explaining an operation of calculating a voltage value.

Hereinafter, operations for adjusting the amount of air discharged from the air conditioning system according to the embodiment shown in FIG. 4 will be described with reference to the graphs shown in FIGS. 5A to 5D.

Referring to FIG. 4 , in operation 401, the control unit (eg, the controller 300 of FIG. 2 ) of the air conditioning system (eg, the air conditioning system 100 of FIGS. 1 and 2 ) according to an exemplary embodiment is in a trial run mode. (or 'test drive mode').

In the present disclosure, a 'trial operation mode' may refer to an operation mode in which the air conditioning system is experimentally operated after installation and before use, and the expression may be used in the same sense hereinafter.

In operation 402, a sensor (eg, sensor 200 of FIG. 2 ) of the air conditioning system according to an exemplary embodiment applies at least two different voltages to a blower (eg, blower 130 of FIG. 2 ) during a trial run mode. When (VSP) is applied, the pressure difference or differential pressure between the inlet (eg, point A in FIG. 3 ) and the outlet (eg, point B in FIG. 3 ) of the blower may be measured.

For example, the sensor measures the pressure difference between the inlet and outlet of the blower when the first voltage (VSP ₁ ) is applied to the blower (hereinafter, 'first differential pressure (P ₁ )'), and the first voltage (VSP ₁ ) to the blower. A pressure difference between the inlet and outlet of the blower when a second voltage (VSP ₂ ) different from the applied pressure (hereinafter referred to as 'second differential pressure (P ₂ )') can be measured, and the first differential pressure measured by the sensor and Information on the second differential pressure may be delivered or transmitted to the control unit.

4 and 5A , in operation 403, the control unit of the air conditioning system according to an exemplary embodiment of the present invention controls the air passing through the blower based on the measured differential pressure information between the inlet and outlet of the blower and the characteristic curve of the blower in operation 402. The amount or air volume of can be calculated.

Specifically, the control unit may calculate the magnitude of the voltage applied to the blower and the air volume corresponding to the differential pressure between the inlet and outlet of the blower through the characteristic curve of the blower.

At this time, the characteristic curve of the blower may be stored in the controller or a memory electrically connected to the controller (eg, the memory 310 of FIG. 2 ), and the controller may calculate the air volume using the pre-stored characteristic curve of the blower.

In one example _{, the} control unit controls the air volume (hereinafter referred to as 'th 1 wind volume (Q ₁ )') can be calculated.

In _another example, the control unit controls _the air volume (hereinafter referred to as 'th 2 Air volume (Q ₂ )') can be calculated.

Referring to FIGS. 4 and 5B , in operation 404, the controller of the air conditioning system according to an embodiment may derive or generate a load curve of the air conditioning system based on the amount of air passing through the blower calculated in operation 403. .

The air flowing in the air conditioning system 100 may be a laminar flow or a turbulent flow. When the air is a laminar flow, the total static pressure loss value and the air volume form a linear relationship or a first-order polynomial relationship, , when the air is turbulent, the total static pressure loss value and the air volume can form a 2nd order polynomial relationship.

At this time, when the total static pressure loss value is '0', the air volume is also '0'. A load curve of an air conditioning system can be derived or created.

For example, the control unit determines the correlation between the first differential pressure (P ₁ ) and the first air volume (Q ₁ ) when the first voltage (VSP ₁ ) is applied to the blower and the second voltage (VSP ₂ ) is applied to the blower. A load curve of the air conditioning system may be derived or generated through a correlation between the second differential pressure (P ₂ ) and the second air volume (Q ₂ ).

Referring to FIGS. 4 and 5C , in operation 405, the control unit of the air conditioning system according to an exemplary embodiment, based on the load curve derived or generated in operation 404, corresponds to the design air volume Q _d of the air conditioning system. The static pressure loss value (P _td ) can be calculated. For example, the controller may calculate a total static pressure loss value (P _td ) for obtaining a design air volume through a load curve representing a relationship between the air volume and the total static pressure loss value.

Referring to FIGS. 4 and 5D , in operation 406, the control unit of the air conditioning system according to an exemplary embodiment controls a design air volume corresponding to the design air volume based on the characteristic curve of the blower and the total static pressure loss value (P _td ) calculated in operation 405. The design voltage value can be calculated.

For example, the control unit performs a design corresponding to the design air volume (Q _d ) to satisfy both the design air volume (Q d ) and the total static pressure loss value (P _td ) calculated _in operation 405 using the characteristic curve of the blower stored in advance. The voltage value (VSP _d ) can be calculated.

In operation 407, the control unit of the air conditioning system according to an embodiment adjusts the voltage applied to the blower based on the design voltage value (VSP _d ) corresponding to the design air volume (Q _d ) calculated in operation 406, thereby controlling the air conditioning system. The air volume of the system can be adjusted to the design air volume (Q _d ). For example, the controller may adjust the air volume of the air conditioning system to the design air volume Q _d by controlling the application of the design voltage value to the blower.

The air conditioning system according to an embodiment may adjust the air volume of the air conditioning system to the design air volume (Q _d ) without performing the TAB operation through operations 401 to 407 described above, and as a result, in the installation process of the air conditioning system You can save time and cost.

In addition, the air conditioning system according to an embodiment adjusts the air volume of the air conditioning system based on the measurement result of the sensor, so that the air volume can be more precisely adjusted than when the air volume is adjusted through the TAB operation.

6 is a flowchart illustrating operations for adjusting air volume of an air conditioning system according to another embodiment, and FIG. 7 is a pressure according to positions of air sequentially passing through a first duct, an inside of the air conditioning system, and a second duct. It is a diagram showing change.

At this time, FIG. 7 shows that the air introduced into the air conditioning system (eg, the air conditioning system 100 of FIG. 1 ) through the first duct 11 passes through the dehumidifying rotor 120 and the first blower 131. After passing through, it shows the pressure change according to the flow position of the air in the process of being discharged to the indoor space through the second duct 12.

Referring to FIG. 6 , in operation 601, the control unit (eg, the controller 300 of FIG. 2 ) of the air conditioning system (eg, the air conditioning system 100 of FIGS. 1 and 2 ) according to another embodiment is in a test run mode. (or 'test drive mode'). Operation 601 may be substantially the same as or similar to operation 401 of FIG. 4 , and duplicate descriptions will be omitted below.

Referring to FIGS. 6 and 7 , in operation 602, a sensor (eg, the sensor 200 of FIG. 2 ) of an air conditioning system according to another embodiment is configured to send a blower (eg, the blower 130 of FIG. 2 ) during a trial run mode. )), the pressure difference (or 'differential pressure') between the inlet and outlet of the dehumidifying rotor and/or the heat exchange unit when at least two different voltages (VSP) are applied may be measured.

For example, if the air contains turbulent components and the flow rate of the air changes rapidly, an error may occur in the differential pressure measurement result of the sensor due to the flow of air. The pressure should be measured at a location where the turbulence component of the air is small and the flow velocity change of the air is small.

Around the inlet and outlet of the blower, as the flow rate of air rapidly changes due to the flow of air formed in the blower, a lot of turbulent components may be included in the air, and as a result, there is a possibility that an error may occur in the differential pressure measurement result of the sensor. have.

Accordingly, the air conditioning system according to another embodiment measures the differential pressure between the inlet and outlet of the dehumidifying rotor or the heat exchanger in which the change in flow rate of air is relatively gradual compared to the inlet and outlet of the blower through the sensor, thereby improving the precision of the differential pressure measurement. can increase

According to an embodiment, the sensor is a differential pressure between the inlet of the dehumidifying rotor 120 (eg, point C in FIG. 7 ) and the outlet of the dehumidifying rotor 120 (eg, point D in FIG. 7 ), as shown in FIG. 7 . may be measured, and the differential pressure between the inlet and outlet of the dehumidifying rotor 120 measured by the sensor may be transmitted or forwarded to the control unit.

For example, the sensor measures the pressure difference between the inlet (point C) and the outlet (point D) of the dehumidifying rotor 120 when the first voltage (VSP ₁ ) is applied to the blower (hereinafter referred to as 'first differential pressure') and the blower The pressure difference between the inlet (point C) and the outlet (point D) of the dehumidifying rotor 120 when the second voltage (VSP ₂ ) different from the first voltage (VSP ₁ ) is applied to (hereinafter referred to as 'second differential pressure') can measure

According to another embodiment (not shown), the sensor may measure a differential pressure between an inlet of the heat exchange unit (eg, the heat exchange unit 110 of FIG. 1 ) and an outlet of the heat exchange unit.

In operation 603, the control unit of the air conditioning system according to another embodiment measures the amount of air (or 'air volume') passing through the heat exchange unit or the dehumidification rotor based on the differential pressure between the inlet and outlet of the heat exchange unit or the dehumidification rotor measured in operation 602. ) can be calculated.

In one embodiment, the control unit may calculate the air volume based on data indicating a relationship between a pressure change amount between an inlet and an outlet of the heat exchange unit or the dehumidification rotor according to the flow rate of air passing through the heat exchange unit or the dehumidification rotor.

Specifically, the control unit may compare the pressure difference between the inlet and outlet of the heat exchange unit or the dehumidification rotor measured in operation 602 with the above data to calculate the air volume corresponding to the differential pressure between the inlet and outlet of the heat exchange unit or the dehumidification rotor.

For example, the control unit calculates an air volume (hereinafter referred to as 'first air volume') when the differential pressure between the inlet and outlet of the heat exchange unit or dehumidification rotor is the first differential pressure, and the differential pressure between the inlet and outlet of the heat exchange unit or dehumidification rotor is the first differential pressure. The air volume at the time of the second differential pressure (hereinafter referred to as 'second air volume') can be calculated.

In this case, data indicating a relationship between a pressure change amount between an inlet and an outlet of the heat exchange unit or the dehumidification rotor according to a flow rate of air passing through the heat exchange unit or the dehumidification rotor may be stored in the controller or a memory stored in the controller. For example, the above-described data may be stored as a look-up table in a controller or a memory. It is not limited to this.

In operation 604, the control unit of the air conditioning system according to another embodiment may calculate the static pressure applied to the blower (or 'pressure difference between the inlet and outlet of the blower') based on the air volume calculated in operation 603 and the characteristic curve of the blower. .

In one example, the control unit may calculate a static pressure (hereinafter, 'first static pressure') applied to the blower under the condition that the first voltage (VSP ₁ ) is applied to the blower and the air volume is the first air volume based on the characteristic curve of the blower. have.

In another example, the control unit may calculate a static pressure (hereinafter, 'second static pressure') applied to the blower under the condition that the second voltage (VSP ₂ ) is applied to the blower and the air volume is the second air volume, based on the characteristic curve of the blower. have.

In operation 605, the air conditioning system according to another embodiment may derive or generate a load curve of the air conditioning system based on the calculation result in operation 604.

For example, the control unit controls the correlation between the first static pressure and the first air volume applied to the blower when the first voltage (VSP ₁ ) is applied to the blower and the blower when the second voltage (VSP ₂ ) is applied to the blower. A load curve of the air conditioning system may be derived or generated through a correlation between the applied second static pressure and the second air volume.

In operation 606, the control unit of the air conditioning system according to another embodiment calculates a total static pressure loss value (P _td ) corresponding to the design air volume (Q _d ) of the air conditioning system based on the load curve derived or generated in operation 605. can For example, the controller may calculate a total static pressure loss value (P _td ) for obtaining a design air volume through a load curve representing a relationship between the air volume and the total static pressure loss value.

In operation 607, the control unit of the air conditioning system according to another embodiment may calculate a design voltage value corresponding to the design air volume based on the characteristic curve of the blower and the total static pressure loss value P _td calculated in operation 606.

For example, the control unit performs _a design corresponding to the design air volume (Q _d ) to satisfy both the design air volume (Q d ) and the total static pressure loss value (P _td ) calculated in operation 606 using the characteristic curve of the blower stored in advance. The voltage value (VSP _d ) can be calculated.

In operation 608, the controller of the air conditioning system according to another embodiment adjusts the voltage applied to the blower based on the design voltage value (VSP _d ) corresponding to the design air volume (Q _d ) calculated in operation 607, thereby controlling the air conditioning system. The air volume of the system can be controlled by the design air volume (Q _d ).

The air conditioning system according to another embodiment may more precisely set the air volume by adjusting the air volume of the air conditioning system to the design air volume Q _d without performing the TAB operation through operations 601 to 606 described above.

8 is a flowchart illustrating operations for adjusting air volume of an air conditioning system according to another embodiment.

Referring to FIG. 8 , in operation 801, a controller (eg, the controller 300 of FIG. 2 ) of an air conditioning system (eg, the air conditioning system 100 of FIGS. 1 and 2 ) according to another embodiment performs a trial operation. mode (or 'test drive mode'). Operation 801 may be substantially the same as or similar to operation 401 of FIG. 4 or operation 601 of FIG. 6 , and duplicate descriptions will be omitted below.

In operation 802, a sensor (eg, the sensor 200 of FIG. 2 ) of an air conditioning system according to another embodiment sends at least two different sensors to a blower (eg, the blower 130 of FIG. 2 ) during a trial run mode. A flow rate of air flowing inside the housing (eg, the housing 101 of FIG. 1 ) when the voltage VSP is applied may be measured.

For example, the sensor measures the air flow rate (hereinafter referred to as 'first flow rate') when the first voltage VSP ₁ is applied to the blower, and the air flow rate when the second voltage VSP ₂ is applied to the blower. A flow rate (hereinafter referred to as 'second flow rate') may be measured, and the flow rate measured by the sensor may be delivered or transmitted to the control unit.

According to one embodiment, the sensor may measure the flow rate of air passing through at least one of the heat exchange unit, the dehumidifying rotor, and the heat exchange unit inside the housing, but is not limited thereto.

In operation 803, the control unit of the air conditioning system according to another embodiment may calculate the amount of air flowing inside the air conditioning system (or 'air volume') based on the flow rate of air measured in operation 802.

According to an embodiment, the controller may calculate the air volume based on the air velocity measured in operation 802 and the previously stored cross-sectional area of the air flow passage inside the housing. At this time, the cross-sectional area of the air flow passage inside the housing may be stored in the controller or a memory electrically connected to the controller (eg, the memory 310 of FIG. 2 ), but is not limited thereto.

For example, the control unit calculates an air volume (hereinafter referred to as 'first air volume') when a first voltage (VSP ₁ ) is applied to the blower and the flow rate of air is the first flow rate, and the second voltage (VSP ₂ ) is applied to the blower. When this is applied and the flow rate of air is the second flow rate, the air flow rate (hereinafter referred to as 'second air flow rate') can be calculated.

In operation 804, the control unit of the air conditioning system according to another embodiment may calculate the static pressure applied to the blower (or 'pressure difference between the inlet and outlet of the blower') based on the air volume calculated in operation 803 and the characteristic curve of the blower. have.

In one example, the control unit may calculate a static pressure (hereinafter, 'first static pressure') applied to the blower under the condition that the first voltage (VSP ₁ ) is applied to the blower and the air volume is the first air volume based on the characteristic curve of the blower. have.

In another example, the control unit may calculate a static pressure (hereinafter, 'second static pressure') applied to the blower under the condition that the second voltage (VSP ₂ ) is applied to the blower and the air volume is the second air volume, based on the characteristic curve of the blower. have.

In operation 805, the air conditioning system according to another embodiment may derive or generate a load curve of the air conditioning system based on the calculation result in operation 804.

For example, the control unit controls the correlation between the first static pressure and the first air volume applied to the blower when the first voltage VSP ₁ is applied to the blower and the voltage applied to the blower when the second voltage VSP2 is applied to the blower. A load curve of the air conditioning system may be derived or generated through a correlation between the second static pressure and the second air volume.

In operation 806, the control unit of the air conditioning system according to another embodiment calculates a total static pressure loss value (P _td ) corresponding to the design air volume (Q _d ) of the air conditioning system based on the load curve derived or generated in operation 805. can be calculated For example, the controller may calculate a total static pressure loss value (P _td ) for obtaining a design air volume through a load curve representing a relationship between the air volume and the total static pressure loss value.

In operation 807, the control unit of the air conditioning system according to another embodiment may calculate a design voltage value corresponding to the design air volume based on the characteristic curve of the blower and the total static pressure loss value P _td calculated in operation 806.

For example, the control unit performs _a design corresponding to the design air volume (Q _d ) to satisfy both the design air volume (Q d ) and the total static pressure loss value (P _td ) calculated in operation 806 using the characteristic curve of the blower stored in advance. The voltage value (VSP _d ) can be calculated.

In operation 808, the controller of the air conditioning system according to another embodiment adjusts the voltage applied to the blower based on the design voltage value (VSP _d ) corresponding to the design air volume (Q _d ) calculated in operation 807, The air volume of the conditioning system can be adjusted to the design air volume (Q _d ).

9 is a block diagram illustrating some components of an air conditioning system according to an exemplary embodiment.

Referring to FIG. 9 , an air conditioning system 100 according to an embodiment includes a sensor 200 (eg, the sensor 200 of FIG. 2 ), a controller 300 (eg, the controller 300 of FIG. 2 ), A memory 310 (eg, the memory 310 of FIG. 2 ) and a dust collecting filter 400 may be included. The air conditioning system 100 according to an embodiment may be an air conditioning system in which a dust collection filter 400 is added to the air conditioning system 100 according to the illustrated embodiment of FIG. 2, and duplicate descriptions are omitted below. let it do

The dust collection filter 400 is located inside the air conditioning system 100 and can adsorb foreign substances included in the air flowing inside the air conditioning system 100 . For example, the dust collecting filter 400 may remove fine dust in the air by adsorbing fine dust in the air flowing into the air conditioning system 100, but is not limited thereto.

When the amount of foreign substances adsorbed to the dust collection filter 400 exceeds the specified amount, not only the performance of the dust collection filter deteriorates, but also the pressure loss of the air passing through the dust collection filter 400 increases, causing the air conditioning system 100 to may also affect its performance.

Accordingly, in order to remove foreign substances in the air and prevent performance deterioration of the air conditioning system 100 due to the dust collection filter 400, it is necessary to inform the user of the replacement time of the dust collection filter 400.

In a conventional air conditioning system, it is common to provide a notification regarding replacement of a dust collection filter to a user at intervals of a specified time. For example, a conventional air conditioning system provides a notification to a user about replacement of a dust collection filter every approximately 3,000 hours.

However, in the case of providing a notification regarding the replacement of the dust collection filter at each specified time period, a situation arises in which the dust collection filter 400 is replaced with a new filter even when the dust collection filter 400 is in a state capable of additionally adsorbing foreign substances, thereby collecting dust. There is a problem that the replacement cost of the filter 400 increases.

Accordingly, the air conditioning system 100 according to an embodiment automatically determines whether or not the dust collection filter 400 needs to be replaced based on the differential pressure between the inlet and outlet of the blower (eg, the blower 130 of FIG. 1 ). , and based on the determination that replacement of the dust collection filter 400 is required, the above-described problem may be solved by providing a user notification regarding the replacement of the dust collection filter.

According to an embodiment, the control unit 300 determines the pressure difference between the inlet and outlet of the blower measured by the sensor 200 during the test run mode (hereinafter referred to as 'first differential pressure') and a specified time after the trial run mode has elapsed. At this time, it may be determined whether or not the dust collection filter 400 needs to be replaced based on the pressure difference between the inlet and outlet of the blower (hereinafter referred to as 'second differential pressure').

That is, the control unit 300 may determine the replacement time of the dust collection filter 400 based on the first differential pressure of the blower measured in the trial operation mode and the second differential pressure of the blower measured during the operation of the air conditioning system 100. .

For example, when the difference between the second differential pressure and the first differential pressure is greater than or equal to a specified value, the control unit 300 determines that the differential pressure of the blower increases as the pressure loss by the dust collecting filter 400 increases, and the dust collecting filter ( 400) may be judged to be necessary for replacement.

According to another embodiment, the control unit 300 collects dust based on the differential pressure between the inlet and outlet of the heat exchange unit (eg, the heat exchange unit 110 of FIG. 1 ) or the dehumidifying rotor (eg, the dehumidification rotor 120 of FIG. 1 ). The replacement time of the filter 400 may be determined.

Based on the determination that the dust collection filter 400 needs to be replaced, the control unit 300 may provide at least one notification among visual notification, auditory notification, and tactile notification to the user.

In one example, the controller 300 may provide a visual notification that the dust collection filter 400 needs to be replaced to the user through the display D. For example, the controller 300 may display a notification indicating that the dust collection filter 400 needs to be replaced on the display D.

In another example, the control unit 300 provides an audible notification to the user that the dust collection filter 400 needs to be replaced through sound, or generates a vibration to notify the user that the dust collection filter 400 needs to be replaced. It can provide, but is not limited thereto.

That is, the air conditioning system 100 according to an embodiment determines the replacement time of the dust collecting filter 400 based on the differential pressure of air, and notifies the user when the dust collecting filter 400 needs to be replaced, thereby improving performance. The replacement cost of the dust collection filter 400 can be reduced by preventing a situation in which sufficient dust collection filters 400 are replaced with new filters.

In addition, the air conditioning system 100 according to an embodiment can inform the user of the replacement time of the dust collection filter 400 more accurately, unlike the conventional air conditioning system that notifies the replacement of the dust collection filter 400 according to a specified time period. Therefore, the dust collecting filter 400 can be replaced in a timely manner.

FIG. 10 is a flowchart illustrating operations for providing a user notification regarding replacement of a dust collecting filter in an air conditioning system according to the embodiment shown in FIG. 9 .

Referring to FIG. 10 , in operation 1001, a controller (eg, the controller 300 of FIG. 9 ) of an air conditioning system (eg, the air conditioning system 100 of FIG. 9 ) according to an embodiment performs a test run mode. can

In operation 1002, a sensor (for example, the sensor 200 of FIG. 9 ) of the air conditioning system according to an embodiment measures the pressure difference between the inlet and outlet of the blower (hereinafter referred to as 'first differential pressure') while the test run mode is performed. can be measured At this time, information about the first differential pressure of the blower measured through the sensor may be delivered or transmitted to a control unit electrically connected to the sensor.

In operation 1003, the sensor of the air conditioning system according to an embodiment may measure a pressure difference between an inlet and an outlet of the blower (hereinafter referred to as 'second differential pressure') when a specified time elapses after the trial operation mode is performed.

For example, the sensor may measure the second differential pressure of the blower when the air conditioning system is operating normally after performing the test run mode, and information on the measured second differential pressure of the blower may be transmitted or transmitted to the control unit. can

In operation 1004, the controller of the air conditioning system according to an embodiment may determine whether a difference between the second differential pressure and the first differential pressure is greater than or equal to a specified value. For example, the controller may determine whether a difference between the second differential pressure of the blower measured in operation 1003 and the first differential pressure of the blower measured in operation 1002 is equal to or greater than a specified value.

In operation 1005, the control unit of the air conditioning system according to an embodiment collects dust when it is determined in operation 1004 that the difference between the second differential pressure and the first differential pressure of the blower ('second differential pressure - first differential pressure') is equal to or greater than a specified value. It is determined that a filter (eg, the dust collecting filter 400 of FIG. 9 ) needs to be replaced, and a user notification regarding replacement of the dust collecting filter may be provided to the user.

The user notification may include, for example, at least one of a visual notification conveying visual information through a display (eg, the display D of FIG. 9 ), an auditory notification through sound, and a tactile notification through vibration. , but is not limited thereto.

On the other hand, when the controller of the air conditioning system according to an embodiment determines that the difference between the second differential pressure and the first differential pressure of the blower is less than a specified value in operation 1004, it is determined that the replacement of the dust collecting filter is not required, and in 1003 Operation 1004 can be repeatedly performed.

The air conditioning system according to an embodiment may more precisely determine the replacement time of the dust collection filter through operations 1001 to 1005 described above, and provide a user notification when the dust collection filter needs to be replaced, thereby providing a user notification. can be replaced in a timely manner.

The operations for adjusting the air volume of the air conditioning system according to the above-described embodiments to the design air volume and/or for providing a notification regarding the replacement time of the dust collecting filter are executed by a computer such as a program module executed by a computer. It can also be implemented in the form of a recording medium containing possible instructions. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. Also, computer readable media may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes computer readable instructions, data structures, other data in a modulated data signal such as program modules, or other transport mechanism, and includes any information delivery media.

Those skilled in the art related to the present embodiment will be able to understand that it may be implemented in a modified form within a range that does not deviate from the essential characteristics of the above description. Therefore, the disclosed methods are to be considered in an illustrative rather than a limiting sense. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the equivalent range should be construed as being included in the present invention.

11: first duct 12: second duct
13: third duct 14: fourth duct
100: air conditioning system 101: housing
101i: first inlet 101e: first outlet
102i: second inlet 102e: second outlet
110: heat exchange unit 120: dehumidifying rotor
130: blower 200: sensor
300: control unit 310: memory
400: dust collection filter

Claims (14)

In the air conditioning system,
a housing including at least one inlet through which air is introduced and at least one outlet through which air is discharged;
a blower positioned in the housing to form a flow of air moving in a direction from the at least one inlet to the at least one outlet;
a heat exchange unit located in the housing and performing heat exchange with air introduced into the housing through the at least one inlet;
a sensor including a differential pressure sensor for measuring a differential pressure between an inlet and an outlet of the heat exchange unit; and
A control unit electrically connected to the blower and the sensor and controlling an electrical signal applied to the blower,
The control unit,
of the air flowing inside the housing based on data indicating the pressure difference between the inlet and outlet of the heat exchange unit when at least two different voltages are applied to the blower and the pressure change amount of the heat exchange unit according to the flow rate of the air passing through the heat exchange unit. Calculate the air volume,
generating a load curve of the air conditioning system based on the calculated air volume and the characteristic curve of the blower;
Calculate a total static pressure loss value corresponding to the design air volume based on the load curve of the air conditioning system;
and calculating a set voltage value of the blower based on the characteristic curve of the blower, the design air volume, and the calculated total static pressure loss value. According to claim 1,
Wherein the control unit adjusts the voltage applied to the blower based on the calculated set voltage value of the blower. delete delete According to claim 1,
The air conditioning system further comprises a memory electrically connected to the control unit and storing a characteristic curve of the blower. delete delete delete delete delete According to claim 1,
The air conditioning system further includes a dust collection filter adsorbing foreign substances in the air flowing inside the housing. According to claim 11,
When performing the test run mode, the first differential pressure between the inlet and outlet of the blower obtained through the sensor and the inlet and outlet of the blower obtained through the sensor when a specified time elapses after the trial run mode is performed. An air conditioning system that provides a user notification for replacement timing of the dust collection filter based on the second differential pressure at the outlet. According to claim 12,
The air conditioning system of claim 1 , wherein the control unit notifies a user of a replacement time of the dust collection filter based on a determination that a difference between the second differential pressure and the first differential pressure is equal to or greater than a specified value. According to claim 12,
The air conditioning system of claim 1 , wherein the user notification includes at least one of a visual notification, an auditory notification, and a tactile notification.

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