Ventilation device and controlling method for same

Abstract

This ventilation device comprises: a housing; a filter provided in the housing; a first fan for causing air to flow into the housing; a second fan for causing air to flow into the housing; a first port that outputs a first control signal for driving the first fan; a second port that outputs a second control signal for driving the second fan; and a processor for determining, while the first control signal is output, on the basis of a pressure difference between a first pressure upstream of the filter and a second pressure downstream of the filter, whether the ventilation device is in a fan misassembly state in which the first fan is connected to the second port and the second fan is connected to the first port.

Description

Ventilation device and control method thereof

[0001] The disclosed invention relates to a ventilation device and a method for controlling the ventilation device.

[0002] A ventilation system is a device capable of ventilating an indoor space by supplying outdoor air into the room and exhausting indoor air to the outside.

[0003] The ventilation device may include a plurality of fans for ventilation. For example, the ventilation device may include a supply fan for supplying outdoor air into the room and an exhaust fan for discharging indoor air to the outside.

[0004] The supply fan and the exhaust fan must be properly connected to the ports formed on the circuit board. For example, if the supply fan and the exhaust fan are connected in reverse to the ports formed on the circuit board, normal ventilation function may not be performed.

[0005] The disclosed invention can provide a ventilation device and a method for controlling the ventilation device that can determine the misassembly state of a plurality of fans that flow air into a housing.

[0006] The disclosed invention can provide a ventilation device and a method for controlling the ventilation device that can automatically assemble a plurality of fans normally when a plurality of fans that flow air into a housing are in a misassembled state.

[0007] The disclosed invention can provide information that a plurality of fans are properly assembled when a plurality of fans that flow air into the housing are properly assembled.

[0008] A ventilation device according to one embodiment may include: a housing; a filter provided within the housing; a first fan for flowing air into the housing; a second fan for flowing air into the housing; a first port for outputting a first control signal for driving the first fan; a second port for outputting a second control signal for driving the second fan; and a processor that determines whether the ventilation device is in a fan misassembly state where the first fan is connected to the second port and the second fan is connected to the first port, based on the pressure difference between a first pressure upstream of the filter and a second pressure downstream of the filter while the first control signal is being output.

[0009] A control method for a ventilation device according to one embodiment comprises: a housing; a filter provided within the housing; a first fan for flowing air into the housing; a second fan for flowing air into the housing; a first port for outputting a first control signal for driving the first fan; and a second port for outputting a second control signal for driving the second fan. In the control method for a ventilation device comprising: a housing; a filter provided within the housing; a first fan for flowing air into the housing; a second fan for flowing air into the housing; and a second port for outputting a second control signal. The method may include determining whether the ventilation device is in a fan misassembly state in which the first fan is connected to the second port and the second fan is connected to the first port, based on the pressure difference between a first pressure upstream of the filter and a second pressure downstream of the filter while the first control signal is being output.

[0010] The disclosed ventilation device and control method can perform normal ventilation operation without separate assembly by the user by determining the misassembly state of a plurality of fans that flow air into the housing and proceeding with an output port change process based on the determination of the misassembly state of the plurality of fans.

[0011] The disclosed ventilation device and its control method can reduce manufacturing costs by minimizing the types of connectors connecting multiple fans and ports.

[0012] The effects intended to be achieved in this document are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present invention belongs from the description below.

[0013] The above and other aspects, features, and advantages of specific embodiments of the present disclosure will become more apparent from the following detailed description, which is taken into account together with the accompanying drawings.

[0014] FIG. 1 is a front view of a ventilation device according to one embodiment.

[0015] FIG. 2 is a front exploded view of a ventilation device according to one embodiment.

[0016] FIG. 3 is a front exploded view illustrating the location for measuring a pressure difference inside a housing according to one embodiment.

[0017] FIG. 4 is a drawing for explaining the air flow path inside a housing according to one embodiment.

[0018] FIG. 5 is a drawing for explaining a circulation path inside a housing according to one embodiment.

[0019] FIG. 6 is a front exploded view of a ventilation device having a structure different from the ventilation devices shown in FIG. 1 to 5.

[0020] FIG. 7 is a drawing illustrating a state in which a plurality of fans are normally assembled according to one embodiment.

[0021] FIG. 8 is a drawing illustrating a state in which a plurality of fans are incorrectly assembled according to one embodiment.

[0022] FIG. 9 is a control block diagram of a ventilation device according to one embodiment.

[0023] Figure 10 is a diagram illustrating an example of airflow resulting from driving a fan in a fan misassembled state.

[0024] FIG. 11 is a drawing to explain an example of airflow resulting from driving a fan in a fan misassembled state of a ventilation device having a structure different from that of FIG. 10.

[0025] FIG. 12 is a flowchart of a control method for a ventilation device according to one embodiment.

[0026] Figure 13 is a diagram illustrating an example of airflow resulting from driving a fan in a fan misassembled state.

[0027] FIG. 14 is a flowchart of a control method for a ventilation device according to one embodiment.

[0028] FIG. 15 is a diagram illustrating an example of airflow when driving a fan in a fan misassembled state.

[0029] FIG. 16 is a drawing to explain an example of airflow resulting from driving a fan in a fan misassembled state of a ventilation device having a structure different from that of FIG. 15.

[0030] FIG. 17 is a flowchart of a control method for a ventilation device according to one embodiment.

[0031] FIG. 18 is a diagram illustrating the normal range of fan assembly corresponding to normal fan assembly and the abnormal range of fan assembly corresponding to a fan misassembly state.

[0032] The various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of said embodiments.

[0033] In relation to the description of the drawings, similar reference numerals may be used for similar or related components.

[0034] The singular form of the noun corresponding to the item may include one or multiple items, unless the relevant context clearly indicates otherwise.

[0035] In this document, each of the phrases such as "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof.

[0036] Expressions such as "at least one" used in this document, when placed before a list of components, refer to the entire list of components rather than individual components within the list. For example, the expression "at least one of A, B, and C" should be understood to include A only, B only, C only, both A and B, both A and C, both B and C, or A, B, and C. As another example, the expression "at least one of A, B, or C" should be understood to include A only, B only, C only, both A and B, both A and C, both B and C, or A, B, and C.

[0037] The term "and / or" includes a combination of multiple related described components or any of the multiple related described components.

[0038] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish a component from another component and do not limit the components in other aspects (e.g., importance or order).

[0039] Where any (e.g., 1st) component is referred to as "coupled" or "connected" to another (e.g., 2nd) component, with or without the terms "functionally" or "communicationly," it means that said any component may be connected to said other component directly (e.g., via a wire), wirelessly, or through a third component.

[0040] Terms such as "include" or "have" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in this document, and do not preclude the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0041] When it is said that a component is "connected," "combined," "supported," or "in contact" with another component, this includes not only cases where the components are directly connected, combined, supported, or in contact, but also cases where they are indirectly connected, combined, supported, or in contact through a third component.

[0042] When it is said that a component is located "on" another component, this includes not only cases where one component is in contact with the other, but also cases where another component exists between the two components.

[0043] The terms "front," "rear," "left," and "right," etc., used in the following description are defined based on the drawings, and the shape and position of each component are not limited by these terms.

[0044] In one embodiment, the ventilation device (1) may be a ventilation device equipped with a heat exchanger (1a, see FIG. 2) and a ventilation device not equipped with a heat exchanger (1b, see FIG. 6).

[0045] The ventilation device (1) according to the present disclosure can be applied regardless of specific form or additional components, provided that it includes a configuration capable of determining the fan misassembly state.

[0046] The operating principle and embodiments of the present invention will be described below with reference to the attached drawings.

[0047] FIG. 1 is a front view of a ventilation device according to one embodiment.

[0048] FIG. 2 is a front exploded view of a ventilation device according to one embodiment.

[0049] FIG. 3 is a front exploded view illustrating the location for measuring a pressure difference inside a housing according to one embodiment.

[0050] Referring to FIGS. 1, 2 and 3, the ventilation device (1a) may be connected to an outdoor space and an indoor space. For example, the ventilation device (1a) may be installed in a machine room (e.g., a utility room in a house) that is distinct from the outdoor space and the indoor space. The location where the ventilation device (1a) is installed is not limited to the examples provided.

[0051] The ventilation device (1a) may include a housing (10a) that forms the exterior. For example, the housing (10a) may have a cuboid shape.

[0052] The ventilation device (1a) may include a plurality of ducts (11a, 12a, 13a, 14a) connected to the housing (10a) and configured to extend in the direction of an outdoor space or an indoor space.

[0053] A plurality of ducts (11a, 12a, 13a, 14a) may include a first duct (11a) that is connected to the housing (10a) and extends in the direction of the outdoor space. The first duct (11a) may communicate the outdoor space and the interior of the housing (10a) so that outdoor air (OA) is drawn into the interior of the housing (10a).

[0054] The housing (10a) may include a first intake port (21a) through which outdoor air (OA) is drawn into the interior of the housing (10a). A first duct (11a) may be connected to the first intake port (21a).

[0055] Outdoor air (OA) can be drawn into the interior of the housing (10a) through the first intake port (21a). For example, outdoor air (OA) can be drawn into the first intake chamber (211) formed inside the housing (10a) through the first intake port (21a).

[0056] A plurality of ducts (11a, 12a, 13a, 14a) may include a second duct (12a) that is connected to the housing (10a) and extends in the direction of the indoor space. The second duct (12a) may communicate the indoor space and the interior of the housing (10a) so that indoor air (RA) is drawn into the interior of the housing (10a).

[0057] The housing (10a) may include a second intake port (22a) through which indoor air (RA) is drawn into the interior of the housing (10a). A second duct (12a) may be connected to the second intake port (22a).

[0058] Indoor air (RA) can be drawn into the interior of the housing (10a) through the second intake port (22a). For example, indoor air (RA) can be drawn into the second intake chamber (221) formed inside the housing (10a) through the second intake port (22a).

[0059] A plurality of ducts (11a, 12a, 13a, 14a) may include a third duct (13a) connected to the housing (10a) and extending in the direction of the outdoor space. The third duct (13a) may communicate the outdoor space and the interior of the housing (10a) so that exhaust air (EA) is discharged into the outdoor space. Exhaust air (EA) may be defined as air discharged from the interior of the housing (10a) into the outdoor space.

[0060] The housing (10a) may include a first outlet (23a) through which exhaust air (EA) is discharged. A third duct (13a) may be connected to the first outlet (23a).

[0061] The exhaust air (EA) can be discharged into the outdoor space through the first exhaust port (23a). For example, the exhaust air (EA) can be discharged into the outdoor space through the first exhaust port (23a) from the first exhaust chamber (231) formed inside the housing (10a).

[0062] A plurality of ducts (11a, 12a, 13a, 14a) may include a fourth duct (14a) that is connected to the housing (10a) and extends in the direction of the indoor space. The fourth duct (14a) may communicate with the interior of the indoor space and the housing (10a) so that supply air (SA) is supplied to the indoor space. Supply air (SA) may be defined as air supplied from the interior of the housing (10a) to the indoor space.

[0063] The housing (10a) may include a second outlet (24a) configured to supply supply air (SA) into an indoor space. A fourth duct (14a) may be connected to the second outlet (24a).

[0064] Supply air (SA) can be supplied to the indoor space through the second outlet (24a). For example, supply air (SA) can be supplied to the indoor space through the second outlet (24a) from the second exhaust chamber (241) formed inside the housing (10a).

[0065] The first duct (11a), the second duct (12a), the third duct (13a) and / or the fourth duct (14a) may have a detachable structure connected to the housing (10a). However, not limited thereto, the first duct (11a), the second duct (12a), the third duct (13a) and / or the fourth duct (14a) may be formed integrally with the housing (10a).

[0066] The ventilation device (1a) may include a plurality of partitions (51a, 52a, 53a, 54a) that divide the interior of the housing (10a) into a plurality of spaces. A first intake chamber (211), a second intake chamber (221), a first exhaust chamber (231), and a second exhaust chamber (241) may be formed inside the housing (10a) by the plurality of partitions (51a, 52a, 53a, 54a). The interior of the housing (10a) may be divided into a first intake chamber (211), a second intake chamber (221), a first exhaust chamber (231), and a second exhaust chamber (241) by the first partition (51a), the second partition (52a), the third partition (53a), and the fourth partition (54a).

[0067] Specifically, the first partition (51a) can partition the first intake chamber (211) and the first exhaust chamber (231). The second partition (52a) can partition the first exhaust chamber (231) and the second exhaust chamber (241). The third partition (53a) can partition the second exhaust chamber (241) and the second intake chamber (221). The fourth partition (54a) can partition the first intake chamber (211) and the second intake chamber (221).

[0068] A ventilation device (1a) according to one embodiment may include a plurality of dampers (31, 32, 33). The plurality of dampers (31, 32, 33) may include a first damper (31) that opens or closes a first intake port (21a), a second damper (32) that opens or closes a second intake port (22a), and / or a third damper (33) that allows or blocks the flow of air between a first intake chamber (211) and a second intake chamber (221).

[0069] The first damper (31) can open the first intake port (21a) to allow airflow between the outdoor space and the first intake chamber (211). For example, the first damper (31) can open the first intake port (21a) to allow outdoor air (OA) to be sucked into the first intake chamber (211).

[0070] The first damper (31) can block the flow of air between the outdoor space and the first intake chamber (211) by closing the first intake port (21a). For example, the first damper (31) can block outdoor air (OA) from being sucked into the first intake chamber (211) by closing the first intake port (21a). Additionally, the first damper (31) can block air from being discharged from the first intake chamber (211) to the outdoor space by closing the first intake port (21a).

[0071] The second damper (32) can open the second intake port (22a) to allow airflow between the indoor space and the second intake chamber (221). For example, the second damper (32) can open the second intake port (22a) to allow indoor air (RA) to be drawn into the second intake chamber (221).

[0072] The second damper (32) can block the flow of air between the indoor space and the second intake chamber (221) by closing the second intake port (22a). For example, the second damper (32) can block indoor air (RA) from being drawn into the second intake chamber (221) by closing the second intake port (22a). Additionally, the second damper (32) can block air from being discharged from the second intake chamber (221) into the indoor space by closing the second intake port (22a).

[0073] The third damper (33) can allow or block the flow of air between the first intake chamber (211) and the second intake chamber (221). For example, when the third damper (33) is open, the flow of air between the first intake chamber (211) and the second intake chamber (221) can be allowed. As another example, when the third damper (33) is closed, the flow of air between the first intake chamber (211) and the second intake chamber (221) can be blocked.

[0074] The ventilation device (1a) may include a heat exchanger (140a) provided for heat exchange between outdoor air (OA) and indoor air (RA). The heat exchanger (140a) may be made of a paper material coated with lithium chloride and may be referred to as a heat exchange element. The heat exchanger (140a) may be implemented as a plate heat exchanger or a rotary heat exchanger.

[0075] The ventilation device (1a) may include a filter (121a, 122a, 123a) that is provided within the housing (10a) and collects foreign substances contained in the air flowing through the interior of the housing (10a).

[0076] The filters (121a, 122a, 123a) may include a first filter (121a) and a second filter (122a) for removing foreign substances contained in the outdoor air (OA) sucked in through the first intake port (21a).

[0077] The first filter (121a) is positioned between the second filter (122a) and the heat exchanger (140a) to remove fine dust remaining in the outdoor air (OA) even after the outdoor air (OA) passes through the second filter (122a).

[0078] The first filter (121a) can be implemented as a HEPA filter. The HEPA filter is a high-efficiency particulate air filter and can be composed of glass fibers.

[0079] The second filter (122a) is positioned between the first intake chamber (211) and the first filter (121a) and can remove fine dust that is relatively larger than that of the first filter (121a).

[0080] The second filter (122a) can be implemented as a pre-filter that removes fine dust that is relatively larger than that of the first filter (121a).

[0081] The first filter (121a) and the second filter (122a) can remove fine dust remaining in the indoor air (RA) as well as the outdoor air (OA). For example, if a circulation path (R3, see FIG. 5) to be described later is formed inside the housing (10a), the first filter (121a) and the second filter (122a) can remove fine dust remaining in the indoor air (RA).

[0082] The filters (121a, 122a, 123a) may include a third filter (123a) for removing foreign substances contained in indoor air (RA) sucked in through the second intake port (22a).

[0083] The third filter (123a) is positioned between the heat exchanger (140a) and the second intake chamber (221) to remove foreign substances contained in the indoor air (RA) sucked in through the second intake port (22a). The third filter (123a) can be implemented as a pre-filter that prevents the heat exchanger (140a) from being contaminated by the indoor air (RA) by removing foreign substances contained in the indoor air (RA).

[0084] The types of the first filter (121a), the second filter (122a), and the third filter (123a) are not limited thereto and can be implemented as various filters for removing foreign substances contained in the air flowing inside the housing (10a) according to various embodiments.

[0085] A ventilation device (1a) according to one embodiment may include a plurality of fans (210a, 220a).

[0086] A plurality of fans (210a, 220a) may include a first fan (210a) positioned on the side of the second outlet (24a) inside the second exhaust chamber (241) and / or a second fan (220a) positioned on the side of the first outlet (23a) inside the first exhaust chamber (231). The first fan (210a) can generate wind power necessary to discharge air to the second outlet (24a). The second fan (220a) can generate wind power necessary to discharge air to the first outlet (23a).

[0087] The ventilation device (1a) may include a heat exchanger (150) for controlling the temperature and humidity of the air flowing through the interior of the housing (10a).

[0088] The heat exchanger (150) can be connected to the outdoor unit via refrigerant piping and operate as part of a refrigerant circulation system. For example, the heat exchanger (150) has a structure in which refrigerant supplied from the outdoor unit included in the refrigerant circulation system circulates inside, thereby cooling or heating the air flowing through the inside of the housing (10a) depending on the temperature or pressure of the refrigerant.

[0089] By removing moisture contained in the air flowing through the interior of the housing (10a) and cooling or heating the air, air with an appropriate temperature and humidity can be supplied to the indoor space. Additionally, the heat exchanger (150) can also perform the function of preventing the heat exchanger (140a) from freezing when the outdoor temperature is low.

[0090] The heat exchanger (150) may be positioned between the heat exchanger (140a) and the second exhaust chamber (241). However, the positioning of the heat exchanger (150) is not limited thereto and may be positioned inside the housing (10a) according to various embodiments. For example, the heat exchanger (150) may be positioned between the first intake chamber (211) and the heat exchanger (140a). As another example, part of the heat exchanger (150) may be positioned between the first intake chamber (211) and the heat exchanger (140a), and another part may be positioned between the heat exchanger (140a) and the second exhaust chamber (241).

[0091] The ventilation device (1a) may include a first differential pressure sensor (71) and a second differential pressure sensor (72) for measuring the pressure difference inside the housing (10a). The first differential pressure sensor (71) may be fixed to the housing (10a) inside the first intake chamber (211) by a first bracket (710). The second differential pressure sensor (72) may be fixed to the housing (10a) inside the second intake chamber (221) by a second bracket (720).

[0092] Referring to FIG. 3, the first differential pressure sensor (71) and the second differential pressure sensor (72) can each measure the pressure difference between the pressure upstream of the filter and the pressure downstream of the filter. The pressure upstream of the filter refers to the pressure at the air inlet side of the filter. The pressure downstream of the filter refers to the pressure at the air outlet side of the filter.

[0093] The first differential pressure sensor (71) can measure the pressure difference between the first pressure (P1) upstream of the second filter (122a) and the second pressure (P2) downstream of the first filter (121a).

[0094] For example, the first differential pressure sensor (71) can measure the pressure difference between the first intake chamber (211) and the space between the first filter (121a) and the heat exchanger (140a).

[0095] The first differential pressure sensor (71) can be connected to the first differential pressure tube (71a). The first differential pressure tube (71a) can extend downstream of the first filter (121a) by passing through a hole formed in the lower part of the second filter (122a) and the first filter (121a), and the first differential pressure sensor (71) can measure the second pressure (P2) downstream of the first filter (121a) through the air flowing in through the first differential pressure tube (71a).

[0096] For example, one end of the first differential pressure tube (71a) is connected to the first differential pressure sensor (71), and the other end of the first differential pressure tube (71a) extends to the space between the first filter (121a) and the heat exchanger (140a), so that the second pressure (P2) downstream of the first filter (121a) can be measured through the air flowing into the first differential pressure tube (71a) from the space between the first filter (121a) and the heat exchanger (140a).

[0097] The pressure difference measured by the first differential pressure sensor (71) according to the present disclosure is not limited thereto and may include a pressure difference measured at two locations where the pressure may change as air flows through the interior of the housing (10a) according to various embodiments. For example, the first differential pressure sensor (71) may measure the pressure difference between the first intake chamber (211) and the second exhaust chamber (241). As another example, the first differential pressure sensor (71) may measure the pressure difference between the air pressure before passing through the heat exchanger (150) and the air pressure after passing through the heat exchanger (150).

[0098] The pressure difference between the first pressure (P1) and the second pressure (P2) according to the present disclosure may be obtained by measuring the first pressure (P1) and the second pressure (P2) respectively by placing pressure sensors at the location where the first pressure (P1) is measured and at the location where the second pressure (P2) is measured.

[0099] The second differential pressure sensor (72) can measure the difference between the third pressure (P3) upstream of the third filter (123a) and the fourth pressure (P4) downstream of the third filter (123a).

[0100] For example, the second differential pressure sensor (72) can measure the pressure difference between the second intake chamber (221) and the first exhaust chamber (231).

[0101] The second differential pressure sensor (72) can be connected to the second differential pressure tube (72a). The second differential pressure tube (72a) can pass through a hole formed in the lower part of the third filter (123a) and extend downstream of the third filter (123a), and the second differential pressure sensor (72) can measure the fourth pressure (P4) downstream of the third filter (123a) through the air flowing in through the second differential pressure tube (72a).

[0102] For example, one end of the second differential pressure tube (72a) is connected to the second differential pressure sensor (72), and the other end of the second differential pressure tube (72a) extends to the first exhaust chamber (231) so that the fourth pressure (P4) downstream of the third filter (123a) can be measured through the air flowing from the first exhaust chamber (231) into the second differential pressure tube (72a).

[0103] The pressure difference measured by the second differential pressure sensor (72) according to the present disclosure is not limited thereto and may include a pressure difference measured at two locations where the pressure may change as air flows through the interior of the housing (10a) according to various embodiments. For example, the second differential pressure sensor (72) may measure the pressure difference between the second intake chamber (221) and the space between the third filter (123a) and the heat exchanger (140a).

[0104] The pressure difference between the third pressure (P3) and the fourth pressure (P4) according to the present disclosure may be obtained by measuring the third pressure (P3) and the fourth pressure (P4) respectively by placing pressure sensors at the location where the third pressure (P3) is measured and at the location where the fourth pressure (P4) is measured.

[0105] FIG. 4 is a drawing for explaining the air flow path inside a housing according to one embodiment.

[0106] Referring to FIG. 4, the housing (10a) may include an air supply path (R1) and an exhaust path (R2).

[0107] The supply air passage (R1) may be a passage that guides outdoor air (OA) into an indoor space. For example, the supply air passage (R1) may be a passage through which outdoor air (OA), sucked in from the outdoor space through the first intake port (21a), passes sequentially through filters (121a, 122a), a heat exchanger (140a), and a heat exchanger (150), and then flows to the second outlet (24a) through the second exhaust chamber (241). The first damper (31) may open the first intake port (21a) so that outdoor air (OA) flows through the supply air passage (R1).

[0108] As the first fan (210a) is driven, outdoor air (OA) can flow along the supply air passage (R1). For example, outdoor air (OA) sucked in through the first intake port (21a) by the wind generated as the first fan (210a) is driven can flow through the supply air passage (R1). The outdoor air (OA) flowing through the supply air passage (R1) can be supplied to the indoor space as supply air (SA) through the second outlet (24a). The first fan (210a) may be referred to as a supply fan in that it supplies air to the indoor space upon driving.

[0109] The exhaust passage (R2) may be a passage that guides indoor air (RA) to an outdoor space. For example, the exhaust passage (R2) may be a passage through which indoor air (RA) sucked into the second intake chamber (221) through the second intake port (22a) flows to the first outlet (23a) through the first exhaust chamber (231) after passing sequentially through the third filter (123a) and the heat exchanger (140a).

[0110] The second damper (32) can open the second intake port (22a) so that indoor air (RA) flows through the exhaust passage (R2).

[0111] As the second fan (220a) is driven, indoor air (RA) can flow along the exhaust passage (R2). For example, indoor air (RA) drawn in through the second intake port (22a) can flow through the exhaust passage (R2) by the wind generated as the second fan (220a) is driven. The indoor air (RA) flowing through the exhaust passage (R2) can be discharged to the outdoor space as exhaust air (EA) through the first outlet (23a). The second fan (220a) may be referred to as an exhaust fan in that it discharges air to the outdoor space as it is driven.

[0112] The supply air passage (R1) and the exhaust air passage (R2) can be arranged to intersect with the heat exchanger (140a). The heat exchanger (140a) exchanges heat between the outdoor air (OA) flowing along the supply air passage (R1) and the indoor air (RA) flowing along the exhaust air passage (R2), thereby allowing the outdoor air to be regulated to a state close to the temperature and humidity of the indoor air before being supplied to the indoor space. Accordingly, changes in the indoor temperature are minimized, thereby improving heating and cooling energy efficiency.

[0113] At this time, the supply air passage (R1) and the exhaust air passage (R2) flow through independent spaces inside the heat exchanger (140a) or inside the housing (10a), and can be partitioned by a plurality of partitions (51a, 52a, 53a, 54a) so that the air does not mix with each other.

[0114] As outdoor air (OA) flows along the supply air passage (R1), a differential pressure (e.g., the pressure difference between the first pressure (P1) and the second pressure (P2), see FIG. 3) can be measured. For example, when outdoor air (OA) flows along the supply air passage (R1) and passes through the second filter (122a) and the first filter (121a), the pressure of the outdoor air (OA) is lowered, so the differential pressure can be measured by the first differential pressure sensor (71).

[0115] Additionally, as indoor air (RA) flows along the exhaust path (R2), a differential pressure (e.g., the pressure difference between the third pressure (P3) and the fourth pressure (P4), see FIG. 3) can be measured. For example, when indoor air (RA) flows along the exhaust path (R2) and passes through the third filter (123a), the pressure of indoor air (RA) is lowered, so the differential pressure can be measured by the second differential pressure sensor (72).

[0116] The ventilation device (1a) can perform a ventilation mode by driving both the first fan (210a) and the second fan (220a) to supply outdoor air (OA) to the indoor space as supply air (SA) by flowing it through the supply air path (R1) and to discharge indoor air (RA) to the outdoor space as exhaust air (EA) by flowing it through the exhaust path (R2).

[0117] The ventilation device (1a) can perform various ventilation modes. The ventilation modes may include a constant temperature dehumidification ventilation mode and a cooling dehumidification ventilation mode.

[0118] For example, the ventilation device (1a) can operate a heat exchanger (150) to perform a constant temperature dehumidifying ventilation mode that controls only the humidity of the outdoor air (OA). As another example, the ventilation device (1a) can operate a heat exchanger (150) to perform a cooling dehumidifying ventilation mode that lowers the humidity and temperature of the outdoor air (OA).

[0119] FIG. 5 is a drawing for explaining a circulation path inside a housing according to one embodiment.

[0120] Referring to FIG. 5, the housing (10a) may include a circulation path (R3).

[0121] The circulation path (R3) may be a path that guides indoor air (RA) back into the indoor space. For example, the circulation path (R3) may be a path that allows indoor air (RA) drawn in from the indoor space through the second intake port (22a) to pass sequentially through the second intake chamber (221), the first intake chamber (211), the filter (121a, 122a), the heat exchanger (140a), and the heat exchanger (150), and then be discharged through the second exhaust chamber (241) to the second outlet (24a). To allow indoor air (RA) to flow through the circulation path (R3), the first damper (31) may close the first intake port (21a), the second damper (32) may open the second intake port (22a), and the third damper (33) may be opened.

[0122] As the first fan (210a) is driven, indoor air (RA) can flow along the circulation path (R3). For example, indoor air (RA) drawn in through the second intake port (22a) by the wind generated as the first fan (210a) is driven can flow through the circulation path (R3). The indoor air (RA) flowing through the circulation path (R3) can be supplied to the indoor space as supply air (SA) through the second outlet port (24a).

[0123] The ventilation device (1a) can perform an indoor circulation mode by driving the first fan (210a) to circulate indoor air (RA) through the circulation path (R3) and supply it back to the indoor space as supply air (SA).

[0124] The ventilation device (1a) can perform a dehumidifying indoor circulation mode by driving the first fan (210a) to circulate indoor air (RA) through the circulation path (R3), and driving the heat exchanger (150) to adjust the temperature or humidity of the indoor air (RA) and then supplying it back to the indoor space as supply air (SA).

[0125] FIG. 6 is a front exploded view of a ventilation device having a structure different from the ventilation devices shown in FIG. 1 to 5.

[0126] Referring to FIG. 6, the ventilation device (1b) may include a housing (10b) that forms the exterior.

[0127] The ventilation device (1b) may include a plurality of ducts (11b, 12b, 13b, 14b) connected to the housing (10b) and configured to extend toward the outdoor space or indoor space.

[0128] A plurality of ducts (11b, 12b, 13b, 14b) may include a first duct (11b) that connects the outdoor space and the interior of the housing (10b) so that outdoor air (OA) is sucked into the interior of the housing (10b) through a first intake port (21b), a second duct (12b) that connects the indoor space and the interior of the housing (10b) so that indoor air (RA) is sucked into the interior of the housing (10b) through a second intake port (22b), a third duct (13b) that connects the outdoor space and the interior of the housing (10b) so that exhaust air (EA) is discharged to the outdoor space through a first exhaust port (23b), and a fourth duct (14b) that connects the indoor space and the interior of the housing (10b) so that supply air (SA) is supplied to the indoor space through a second exhaust port (24b).

[0129] The ventilation device (1b) may include a plurality of partitions (51b, 52b, 53b, 54b) that divide the interior of the housing (10b) into a plurality of spaces. A first intake chamber (212), a second intake chamber (222), a first exhaust chamber (232), and a second exhaust chamber (242) may be formed inside the housing (10b) by the plurality of partitions (51b, 52b, 53b, 54b).

[0130] The ventilation device (1b) may include a heat exchanger (140b) provided for heat exchange between outdoor air (OA) and indoor air (RA).

[0131] The ventilation device (1b) may include a filter (121b, 122b, 123b, 123c) that is provided within the housing (10b) and collects foreign substances contained in the air flowing through the interior of the housing (10b).

[0132] The filters (121b, 122b, 123b, 123c) may include a first filter (121b) and a second filter (122b) for removing foreign substances contained in the outdoor air (OA) sucked in through the first intake port (21b).

[0133] The first filter (121b) is positioned between the second filter (122b) and the heat exchanger (140b) to remove fine dust remaining in the outdoor air (OA) even after the outdoor air (OA) passes through the second filter (122b). The first filter (121b) can be implemented as a HEPA filter.

[0134] The second filter (122b) is positioned between the first intake chamber (212) and the first filter (121b) to remove fine dust that is relatively larger than that of the first filter (121b). The second filter (122b) can be implemented as a pre-filter that removes fine dust that is relatively larger than that of the first filter (121b).

[0135] The filters (121b, 122b, 123b, 123c) may include a plurality of third filters (123b, 123c) for removing foreign substances contained in indoor air (RA) sucked in through the second intake port (22b).

[0136] A plurality of third filters (123b, 123c) are positioned between the heat exchanger (140b) and the second intake chamber (222) to remove foreign substances contained in the indoor air (RA) sucked in through the second intake port (22b).

[0137] A plurality of third filters (123b, 123c) may be implemented as HEPA filters or pre-filters that prevent the heat exchanger (140b) from being contaminated by indoor air (RA) by removing foreign substances contained in indoor air (RA).

[0138] For example, among the plurality of third filters (123b, 123c), the filter (123b) adjacent to the second intake chamber (222) may be implemented as a pre-filter, and the filter (123c) adjacent to the heat exchanger (140b) may be implemented as a HEPA filter.

[0139] The ventilation device (1b) may include a plurality of fans (210b, 220b). The plurality of fans (210b, 220b) may include a first fan (210b) positioned on the side of the second outlet (24b) inside the second exhaust chamber (242) and / or a second fan (220b) positioned on the side of the first outlet (23b) inside the first exhaust chamber (232).

[0140] The first fan (210b) can generate the wind power necessary to discharge air to the second outlet (24b). The second fan (220b) can generate the wind power necessary to discharge air to the first outlet (23b).

[0141] The ventilation device (1b) may include a first differential pressure sensor (71) and a second differential pressure sensor (72) for measuring the pressure difference inside the housing (10b).

[0142] The first differential pressure sensor (71) can be fixed to the housing (10b) inside the first exhaust chamber (232).

[0143] The second differential pressure sensor (72) can be fixed to the housing (10b) inside the second exhaust chamber (242).

[0144] The first differential pressure sensor (71) can be connected to a plurality of first differential pressure tubes (71b, 71c).

[0145] The first differential pressure sensor (71) can measure the pressure difference between the first pressure (P1) and the second pressure (P2) through air flowing into a plurality of first differential pressure tubes (71b, 71c) from each of the first intake chamber (212) and the second exhaust chamber (242).

[0146] The second differential pressure sensor (72) can be connected to a plurality of second differential pressure tubes (72b, 72c).

[0147] The second differential pressure sensor (72) can measure the pressure difference between the third pressure (P3) and the fourth pressure (P4) through air flowing into the plurality of second differential pressure tubes (72b, 72c) from each of the first exhaust chamber (232) and the second intake chamber (222).

[0148] FIG. 7 is a drawing illustrating a state in which a plurality of fans are normally assembled according to one embodiment.

[0149] Referring to FIG. 7, in one embodiment, the ventilation device (1) may include a circuit board (80) that generates various control signals for controlling various components of the ventilation device (1).

[0150] The circuit board (80) may be a circuit board formed with various electronic components and circuits for generating various control signals of the ventilation device (1). For example, the circuit board (80) may be implemented in various types such as a printed circuit board (PCB), a single-layer PCB, a multi-layer PCB, a rigid PCB, a flexible PCB, or a rigid-flex PCB.

[0151] The circuit board (80) may be placed on one side inside the housing (10; 10a, 10b). However, the placement of the circuit board (80) is not limited thereto and may be placed at various locations inside the housing (10) according to various embodiments. Additionally, the circuit board (80) may be fixedly attached to the outside of the housing (10).

[0152] The circuit board (80) can generate a first control signal for driving the first fan (210; 210a, 210b). The circuit board (80) can generate a second control signal for driving the second fan (220; 220a, 220b).

[0153] A first port (81) that outputs a first control signal and a second port (82) that outputs a second control signal may be formed on the circuit board (80).

[0154] A connection signal may be generated when each of the first port (81) and the second port (82) is connected to either the first fan (210) or the second fan (220). The connection of the first port (81) to the fan may include the first port (81) being electrically connected to a fan connector.

[0155] The connection signal may be a signal indicating only the information that the fan connector has been inserted into the port and is electrically connected.

[0156] Even if either the first fan connector (216) or the second fan connector (226) is inserted into the first port (81), a connection signal can be generated by the electrical connection between the first port (81) and the fan connector inserted into the first port (81).

[0157] Even if either the first fan connector (216) or the second fan connector (226) is inserted into the second port (82), a connection signal can be generated by the electrical connection between the second port (82) and the fan connector inserted into the second port (82).

[0158] In summary, the connection signal can only provide information that a fan connector is connected to a port, but it cannot provide information about which fan connector is connected to which port.

[0159] The first fan (210) may include a first fan cable (215) and a first fan connector (216). Additionally, the first fan (210) may include a first fan motor for generating wind power. Driving the first fan (210) may include driving the first fan motor.

[0160] The second fan (220) may include a second fan cable (225) and a second fan connector (226). Additionally, the second fan (220) may include a second fan motor for generating wind power. Driving the second fan (220) may include driving the second fan motor.

[0161] When the first fan (210) is connected to the first port (81) and the second fan (220) is connected to the second port (82), the first fan (210) can be driven based on a first control signal output by the first port (81) and the second fan (220) can be driven based on a second control signal output by the second port (82).

[0162] FIG. 8 is a drawing illustrating a state in which a plurality of fans are incorrectly assembled according to one embodiment.

[0163] Referring to FIG. 8, a fan misassembly state can be defined as a fan that is not connected to a specific port being connected to a specific port. That is, a state in which the first fan (210) is connected to the second port (82) and the second fan (220) is connected to the first port (81) can be defined as a fan misassembly state. For example, a state in which the first fan connector (216) is connected to the second port (82) and the second fan connector (226) is connected to the first port (81) can be defined as a fan misassembly state.

[0164] In the case of a fan misassembled in the ventilation device (1), the first fan (210) can be driven based on a second control signal output by the second port (82), and the second fan (220) can be driven based on a first control signal output by the first port (81).

[0165] The ventilation device (1) can perform an output port change process that outputs a second control signal through the first port (81) and outputs a first control signal through the second port (82) based on the determination that the fan is in a misassembled state.

[0166] When the output port change process is performed, a second control signal is output through the first port (81), so that the second fan (220) connected to the first port (81) can be driven based on the second control signal, and a first control signal is output through the second port (82), so that the first fan (210) connected to the second port (82) can be driven based on the first control signal.

[0167] Conventional ventilation systems prevented fan misassembly in advance by configuring the types of fan connectors for each of the multiple fans differently. For example, conventional ventilation systems prevented fan misassembly in advance by distinguishing between the fan connector of the supply fan, implemented in red, and the fan connector of the exhaust fan, implemented in blue. However, using different types of fan connectors for the supply and exhaust fans can lead to increased manufacturing costs.

[0168] In addition, conventional ventilation devices only prevent fan misassembly in advance and cannot determine whether the manufactured ventilation device is in a state of fan misassembly. Therefore, to verify whether the fan is misassembled, the user must disassemble the manufactured ventilation device, personally check the fan misassembly status, and then reconnect the fan connector, which presents a problem.

[0169] The ventilation device (1) according to the present disclosure may apply one type of fan connector to a plurality of fans. For example, the first fan connector (216) of the first fan (210) and the second fan connector (226) of the second fan (220) may be one type of fan connector having the same shape and color. This enables the standardization and common use of fan connector parts, thereby reducing manufacturing costs compared to the prior art.

[0170] The ventilation device (1) according to the present disclosure can determine the fan misassembly state and, by performing an output port change process based on the determined fan misassembly state, can independently resolve the problem caused by the fan misassembly state without physical reassembly. For example, the ventilation device (1) according to the present disclosure applies one type of fan connector to a plurality of fans to reduce manufacturing costs, so that even if the fan misassembly state occurs during the manufacturing process of the ventilation device, the problem caused by the fan misassembly state can be independently resolved without physical reassembly by determining the fan misassembly state and performing an output port change process.

[0171] FIG. 9 is a control block diagram of a ventilation device according to one embodiment.

[0172] Referring to FIG. 9, the ventilation device (1) may include various parts and / or devices and may include a control unit (320) electrically connected to the various parts and / or devices. For example, the ventilation device (1) may include a first differential pressure sensor (71), a second differential pressure sensor (72), a first port (81), a second port (82), a first fan (210), a second fan (220), a communication interface (310), a user interface device (330), and a control unit (320) electrically connected to a plurality of dampers (31, 32, 33).

[0173] The first differential pressure sensor (71) and the second differential pressure sensor (72) can measure the pressure difference between the pressure upstream of the filter and the pressure downstream of the filter.

[0174] The first differential pressure sensor (71) can measure the pressure difference between the first pressure (P1) upstream of the second filter (122; 122a, 122b) and the second pressure (P2) downstream of the first filter (121).

[0175] The first differential pressure sensor (71) can transmit a measurement signal regarding the measured pressure difference to the control unit (320).

[0176] The second differential pressure sensor (72) can measure the pressure difference between the third pressure (P3) upstream of the third filter (123; 123a, 123b, 123c) and the fourth pressure (P4) downstream of the third filter (123).

[0177] The second differential pressure sensor (72) can transmit a measurement signal regarding the measured pressure difference to the control unit (320).

[0178] The processor (321) can determine whether the fan of the ventilation device (1) is in a misassembled state based on the pressure difference measured by the first differential pressure sensor (71) and / or the pressure difference measured by the second differential pressure sensor (72). The processor (321) may include various processing circuits and / or multiple processors. For example, as used herein including in the claims, the term “processor” may include various processing circuits including at least one processor, and at least one of the at least one processor may be configured to perform the various functions described herein collectively in an individually and / or distributed manner. As used herein, when “processor,” “at least one processor,” and “one or more processors” are described as being configured to perform multiple functions, these terms include, for example without limitation, situations where one processor performs some of the mentioned functions and other processor(s) perform other of the mentioned functions, and situations where a single processor can perform all of the mentioned functions. Additionally, at least one processor may include a combination of processors performing various functions mentioned / disclosed in a distributed manner, for example. At least one processor may execute program instructions to achieve or perform various functions.

[0179] The first port (81) can output a first control signal for driving the first fan (210). The processor (321) can generate the first control signal and transmit it to the first port (81). When the first port (81) is connected to either the first fan (210) or the second fan (220), a connection signal may be generated, and the generated connection signal may be transmitted to the control unit (320).

[0180] The second port (82) can output a second control signal to drive the second fan (220). The processor (321) can generate the second control signal and transmit it to the second port (82).

[0181] When the second port (82) is connected to either the first fan (210) or the second fan (220), a connection signal may be generated, and the generated connection signal may be transmitted to the control unit (320).

[0182] When the output port process is performed, the first port (81) may output a second control signal. Additionally, the second port (82) may output a first control signal. The processor (321) may change the algorithm for generating the first control signal and the second control signal to perform the output port process.

[0183] The first fan (210) can flow air into the interior of the housing (10). For example, the first fan (210) may be a supply fan that flows outdoor air (OA) into the interior of the housing (10) through the supply air passage (R1) or flows indoor air (RA) into the interior of the housing (10) through the circulation passage (R3).

[0184] The second fan (220) can flow air into the interior of the housing (10). For example, the second fan (220) may be an exhaust fan that flows indoor air (RA) into the interior of the housing (10) through the exhaust passage (R2).

[0185] The communication interface (310) may include various communication circuits for performing wired communication and / or wireless communication with an external device (e.g., a server, a user device and / or other home appliance). The user device may include various electronic devices such as a smartphone, a notebook, a laptop, a smart watch, a stationary tablet, or a speaker. User input may be obtained through the user interface device (330) as well as through the user device.

[0186] The communication interface (310) may include at least one of a short-range communication circuit and a long-range communication circuit. The communication interface (310) may transmit data to an external device or receive data from an external device. For example, the communication interface (310) may support cellular communication, wireless local area network, home radio frequency (RF), infrared communication, ultra-wide band (UWB) communication, Wi-Fi, Wi-Fi Direct, Bluetooth, AD-HOC, and / or Zigbee. The communication technologies supported by the communication interface (310) are not limited to those exemplified.

[0187] The communication interface (310) may also communicate with an external device through an access point (AP). The access point can connect the local network (LAN) to which the ventilation device (1) is connected to a wide area network (WAN) to which the server is connected. The ventilation device (1) can be connected to the server through the wide area network (WAN).

[0188] The ventilation device (1) can transmit information related to the operation of the ventilation device (1) to a user device through a communication interface (310).

[0189] For example, the ventilation device (1) can transmit to the user device information such as the result of determining the fan misassembly status, the result of performing the output port change process, information that the fan is properly assembled, the ventilation mode currently in operation (e.g., ventilation mode, indoor circulation mode, constant temperature dehumidification ventilation mode, cooling dehumidification ventilation mode, etc.), information on the pressure difference between the front and rear ends of the filters (121, 122, 123) measured through the first differential pressure sensor (71) and the second differential pressure sensor (72), and information on the filter clogging status.

[0190] Additionally, the ventilation device (1) can receive various information or control signals from a user device through a communication interface (310). For example, the ventilation device (1) can receive from the user device a ventilation device operation control command (power on / off), an operation mode selection command (ventilation mode, indoor circulation mode, constant temperature dehumidification ventilation mode, cooling dehumidification ventilation mode, etc.), a command to control the individual operation of the first fan (210) and the second fan (220), a command to control the opening and closing of the first damper (31), the second damper (32), and the third damper (33), a request to check the fan misassembly status, a request to check the filter clogging status, etc.

[0191] The user interface device (330) may provide a user interface for the user and the ventilation device (1) to interact. The user interface device (330) may include an input interface (331) and an output interface (332).

[0192] The input interface (331) can convert sensory information received from the user into an electrical signal. The input interface (331) may include a power button, an operation button, a mode selection dial (or mode selection button), and a fan drive setting button. For example, the input interface (331) may include a mode selection button or dial for selecting a ventilation mode, an indoor circulation mode, a constant temperature dehumidification ventilation mode, a cooling dehumidification ventilation mode, etc. The input interface (331) may include a tact switch, a push switch, a slide switch, a toggle switch, a micro switch, a touch switch, a touch pad, a touch screen, a jog dial, and / or a microphone, etc.

[0193] The output interface (332) can visually or audibly convey information related to the operation of the ventilation device (1) to the user. For example, the output interface (332) can convey information related to the ventilation mode and the operation time of the ventilation device (1), the driving status of the first fan (210) and the second fan (220), the result of detecting a fan misassembly status, the result of performing an output port change process, the information on the completion of normal assembly of the first fan (210) and the second fan (220), the result of detecting a filter clogging status, and the open / close status information of the first damper (31), the second damper (32), and the third damper (33) to the user. Information regarding the operation of the ventilation device (1) can be output via a screen, an indicator, voice, etc. The output interface (332) may include a Liquid Crystal Display (LCD) panel, a Light Emitting Diode (LED) panel, a speaker, etc.

[0194] Multiple dampers (31, 32, 33) can allow air inside the housing (10) to flow through a predetermined path. The first damper (31) can open the first intake port (21a) to allow outdoor air (OA) to flow through the supply path (R1). The second damper (32) can open the second intake port (22a) to allow indoor air (RA) to flow through the exhaust path (R2). The third damper (33) can allow air flow between the first intake chamber (211) and the second intake chamber (221) to allow indoor air (RA) to flow through the circulation path (R3).

[0195] The control unit (320) can control the first damper (31) to open or close the first intake port (21a).

[0196] The control unit (320) can control the second damper (32) to open or close the second intake port (22a).

[0197] The control unit (320) can control the third damper (33) to allow or block the flow of air between the first intake chamber (211) and the second intake chamber (221).

[0198] The control unit (320) may include a processor (321) and a memory (322). The memory (322) may include volatile memory (e.g., S-RAM, D-RAM) and non-volatile memory (e.g., ROM, EEPROM). The processor (321) and the memory (322) may be implemented as separate chips or as a single chip. The processor (321) and the memory (322) may be provided on the circuit board (80) as separate chips or as a single chip. Additionally, multiple processors and multiple memories may be provided. The processor (321) can process various data and various signals using instructions, data, programs and / or software stored in the memory (322). The processor (321) may include one core or multiple cores. The processor (321) can generate control signals for controlling components of the ventilation device (1). For example, the processor (321) can generate a first control signal and a second control signal.

[0199] The memory (322) can store various data and various values ​​(e.g., normal range of fan assembly, abnormal range of fan assembly, pressure difference value between the first pressure and the second pressure, pressure difference value between the third pressure and the fourth pressure, criteria for determining fan misassembly status, information related to the output port change process, mapping information between the first port and the second port, criteria for determining filter clogging status, ventilation mode setting information, damper control information, a predetermined time, etc.) for the operation of the processor (321) to be described later.

[0200] Figure 10 is a diagram illustrating an example of airflow resulting from driving a fan in a fan misassembled state.

[0201] When air passes through a filter, a pressure difference may occur between the upstream and downstream sides depending on the filter's filtration characteristics. Additionally, since the filter acts as a resistance to airflow, the greater the airflow passing through the filter, the more significantly the air pressure upstream of the filter decreases.

[0202] Referring to FIG. 10, when a first control signal is output through the first port (81) among the first port (81) and the second port (82) in a fan misassembled state, air can flow through the exhaust path (R2) according to the operation of the second fan (220; 220a).

[0203] For example, when the first damper (31) opens the first intake port (21a), the second damper (32) opens the second intake port (22a), and the third damper (33) is closed, if the first control signal is output through the first port (81) among the first port (81) and the second port (82) in a fan misassembled state, air can flow through the exhaust path (R2) according to the operation of the second fan (220; 220a).

[0204] Meanwhile, in a fan misassembled state, when the first control signal is output through the first port (81) among the first port (81) and the second port (82), the first fan (210; 210a) is connected to the second port (82), so the first fan (210; 210a) is not driven.

[0205] When the first fan (210; 210a) is driven, the flow rate of air flowing through the supply air passage (R1) is relatively large, so the pressure decreases relatively significantly as it passes through the filters (121, 122). For example, the first pressure (P1) of the air upstream of the second filter (122; 122a) decreases relatively significantly after passing through the second filter (122; 122a) and the first filter (121; 121a).

[0206] On the other hand, when the first fan (210) is not driven, the flow rate of air flowing through the supply air passage (R1) is relatively small, so the pressure decreases relatively small as it passes through the filters (121, 122). For example, the first pressure (P1) of the air upstream of the second filter (122; 122a) decreases relatively small after passing through the second filter (122; 122a) and the first filter (121; 121a).

[0207] According to the present disclosure, a fan misassembly state can be determined by using a pressure change of air flowing through the supply air passage (R1) (e.g., the difference between a first pressure (P1) and a second pressure (P2)). The pressure change of air flowing through the supply air passage (R1) according to the present disclosure is not limited to that shown in FIG. 10, and may correspond to any two points where the pressure of the air flowing through the supply air passage (R1) can change. For example, the pressure change of air flowing through the supply air passage (R1) may include the pressure change of air before passing through the heat exchanger (150) and the pressure change of air after passing through the heat exchanger (150). As another example, the pressure change of air flowing through the supply air passage (R1) may include the pressure change of air inside the first intake chamber (211) and the pressure change of air inside the second exhaust chamber (241).

[0208] FIG. 11 is a drawing to explain an example of airflow resulting from driving a fan in a fan misassembled state of a ventilation device having a structure different from that of FIG. 10.

[0209] Referring to FIG. 11, when a first control signal is output through the first port (81) among the first port (81) and the second port (82) in a fan misassembled state, air can flow through the exhaust path (R2) according to the operation of the second fan (220; 220b). For example, when the first intake port (21b) and the second intake port (22b) are open, when a first control signal is output through the first port (81) among the first port (81) and the second port (82) in a fan misassembled state, air can flow through the exhaust path (R2) as the second fan (220; 220b) connected to the first port (81) is driven.

[0210] Meanwhile, in a fan misassembled state, when the first control signal is output through the first port (81) among the first port (81) and the second port (82), the first fan (210; 210b) is connected to the second port (82), so the first fan (210; 210b) is not driven.

[0211] When the first fan (210; 210b) is not driven, the flow rate of air flowing through the supply air passage (R1) is relatively small, so the pressure of the air passing through the filter (121, 122) is reduced relatively small compared to when the first fan (210; 210b) is driven and air flows through the supply air passage (R1). For example, the pressure difference between the first pressure (P1) of the first intake chamber (212) and the second pressure (P2) of the second exhaust chamber (242) may be relatively smaller when the first fan (210; 210b) is not driven than when the first fan (210; 210b) is driven.

[0212] FIG. 12 is a flowchart of a control method for a ventilation device according to one embodiment.

[0213] Referring to FIG. 12, the ventilation device (1) can receive connection signals of a plurality of fans (210, 220) (1100). Receiving connection signals of a plurality of fans (210, 220) may include receiving connection signals generated by both the first port (81) and the second port (82) being electrically connected to either the first fan (210) or the second fan (220).

[0214] In one embodiment, the processor (321) may check for a fan misassembly state in response to receiving a connection signal generated by both the first port (81) and the second port (82) being electrically connected to either the first fan (210) or the second fan (220). Checking for a fan misassembly state may include determining whether the fan is misassembly state.

[0215] For example, the processor (321) may start checking for fan misassembly status in response to receiving a connection signal generated by both the first port (81) and the second port (82) being electrically connected to either the first fan (210) or the second fan (220).

[0216] Specifically, the processor (321) may determine that the fan is in a non-connected state where the port and the fan are not connected, without starting a fan misassembly state check, if either the first port (81) or the second port (82) is not connected to both the first fan (210) and the second fan (220) and no connection signal is generated. In this case, the processor (321) may announce information regarding the fan non-connected state. Announcing information regarding the fan non-connected state may include providing information that the port is not connected to the fan through the user interface device (330).

[0217] The processor (321) can obtain the pressure difference between the measured first pressure (P1) and the second pressure (P2) while not outputting the first control signal and the second control signal (1200). For example, while the first port (81) and the second port (82) each do not output the first control signal and the second control signal and thus not all fans (210, 220) are driven, the pressure difference between the first pressure (P1) and the second pressure (P2) measured by the first differential pressure sensor (71) can be obtained.

[0218] While the operation of 1200 is being performed, the processor (321) can control the first damper (31) to open the first intake port (21a), control the second damper (32) to open the second intake port (22a), and control the third damper (33) to close the third damper (33).

[0219] In various embodiments, the processor (321) can determine an abnormal range corresponding to a fan misassembly state (1300).

[0220] The abnormal range corresponding to the fan misassembly state may be the range in which the pressure difference between the first pressure (P1) and the second pressure (P2) measured when the first fan (210) is not driven even though the first control signal is output through the first port (81) in the fan misassembly state belongs.

[0221] The abnormal range corresponding to the fan misassembly condition can be determined based on the tolerance value. For example, the abnormal range corresponding to the fan misassembly condition may be a range between the tolerance value and a predetermined value (e.g., 0 Pa).

[0222] The tolerance value may be a predefined value to accurately determine whether the fan is properly assembled. For example, the tolerance value may be a predefined value considering the measurement sensitivity, measurement noise, etc. of the differential pressure sensor (e.g., the first differential pressure sensor (71)).

[0223] The tolerance value may be approximately -4 Pa. However, the tolerance value according to the present disclosure is not limited thereto and may be a value smaller than -4 Pa or a value larger than -4 Pa depending on various embodiments.

[0224] In one embodiment, the processor (321) can determine an abnormal range corresponding to a fan misassembly state based on the pressure difference between the measured first pressure (P1) and the second pressure (P2) while not outputting the first control signal and the second control signal.

[0225] For example, the abnormal range corresponding to the fan misassembly state may be a range between the sum of the pressure difference between the first pressure (P1) and the second pressure (P2) measured when all multiple fans (210, 220) are stopped and the allowable error value, and a predetermined value (e.g., 0 Pa).

[0226] That is, even if all of the multiple fans (210, 220) are stopped, natural airflow generated according to the installation environment of the ventilation device (1) can flow inside the housing (10), so an abnormal range can be determined by reflecting the pressure difference between the first pressure (P1) and the second pressure (P2) obtained when all of the multiple fans (210, 220) are stopped, thereby allowing for a more accurate identification of the fan misassembly state.

[0227] The processor (321) can generate a first control signal to check the fan misassembly status. The first port (81) can output the generated first control signal (1400).

[0228] In various embodiments, the processor (321) can determine whether the ventilation device (1) is in a fan misassembled state based on the pressure difference between the first pressure (P1) and the second pressure (P2) while outputting the first control signal through the first port (81) without outputting the second control signal through the second port (82).

[0229] In one embodiment, the processor (321) may determine a normal fan assembly state in which the fan is normally assembled based on the fact that the pressure difference between the first pressure (P1) and the second pressure (P2) corresponds to a normal range while outputting the first control signal through the first port (81) without outputting the second control signal through the second port (82). The normal fan assembly state may be a state in which the first fan (210) is connected to the first port (81) and the second fan (220) is connected to the second port (82).

[0230] In one embodiment, the processor (321) may determine that the fan is in a misassembled state based on the fact that the pressure difference between the first pressure (P1) and the second pressure (P2) corresponds to an abnormal range while outputting the first control signal through the first port (81) without outputting the second control signal through the second port (82) (Example of 1500 and 1600).

[0231] In one embodiment, the processor (321) may perform an output port change process based on the determination that the ventilation device (1) is in a fan misassembled state (1700). The output port change process may include a process of outputting a second control signal through the first port (81) and outputting a first control signal through the second port (82).

[0232] That is, the fan misassembly state means a state in which the first fan (210) is connected to the second port (82) and the second fan (220) is connected to the first port (81). In such a state, each of the multiple fans (210, 220) can be operated normally by changing the control signals output by the ports. The output port change process may be a process in which the first port (81) outputs the second control signal and the second port (82) outputs the first control signal by changing the algorithm that generates the first control signal and the second control signal.

[0233] In one embodiment, the processor (321) may announce fan normal assembly information that the first fan (210) and the second fan (220) have been properly assembled after performing an output port change process (1800).

[0234] In one embodiment, while outputting a first control signal, the processor (321) may announce fan normal assembly information that the first fan (210) and the second fan (220) are normally assembled based on the pressure difference between the first pressure (P1) and the second pressure (P2) being within a normal range (No to 1500 and 1800).

[0235] Notifying the fan normal assembly information may include providing information to the user to recognize that the fan is in a normal assembled state. The fan normal assembly information may be output visually or audibly through a user interface device (330). For example, the fan normal assembly information may be displayed on a display, or output as the lighting / flashing of an indicator lamp or as a voice or notification sound through a speaker. The fan normal assembly information may be visually displayed in the form of characters, symbols, colors, or icons, and may be audibly output in the form of an alarm sound, voice message, or melody.

[0236] Fan normal assembly information may be transmitted to a user device through a communication interface (310) and announced through the user device.

[0237] According to the present disclosure, when the ventilation device (1) is in a fan misassembled state, the fan misassembled state is identified and an output port process is performed, thereby performing normal ventilation operation and providing convenience as the user does not need to disassemble the ventilation device to properly assemble the fan.

[0238] Figure 13 is a diagram illustrating an example of airflow resulting from driving a fan in a fan misassembled state.

[0239] Referring to FIG. 13, in order to allow air to flow through the circulation path (R3), the first damper (31) closes the first intake port (21a), the second damper (32) opens the second intake port (22a), and the third damper (33) allows air to flow from the second intake chamber (221) to the first intake chamber (211).

[0240] In the case where the first control signal is output to flow air through the circulation path (R3) in a fan misassembled state, the second fan (220; 220a) is driven instead of the first fan (210; 210a), so the indoor air (RA) does not flow through the circulation path (R3) but can flow through the exhaust path (R2) by the wind power of the second fan (220; 220a).

[0241] When the first fan (210; 210a) is driven, the flow rate of air flowing through the circulation path (R3) is relatively large, so the pressure decreases relatively significantly as it passes through the filters (121, 122). For example, the first pressure (P1) of the air upstream of the second filter (122; 122a) decreases relatively significantly after passing through the second filter (122; 122a) and the first filter (121; 121a).

[0242] On the other hand, when the first fan (210; 210a) is not driven, the flow rate of air flowing through the circulation path (R3) is relatively small, so the pressure decreases relatively small as it passes through the filters (121, 122). For example, the first pressure (P1) of the air upstream of the second filter (122; 122a) decreases relatively small after passing through the second filter (122; 122a) and the first filter (121; 121a).

[0243] According to the present disclosure, a fan misassembly state can be determined by using a pressure change of air flowing through the circulation path (R3) (e.g., the difference between a first pressure (P1) and a second pressure (P2)). The pressure change of air flowing through the circulation path (R3) according to the present disclosure is not limited to that shown in FIG. 13, and may correspond to any two points where the pressure of the air flowing through the circulation path (R3) can change. For example, the pressure change of air flowing through the circulation path (R3) may include the pressure change of air before passing through the heat exchanger (150) and the pressure change of air after passing through the heat exchanger (150). As another example, the pressure change of air flowing through the circulation path (R3) may include the pressure change of air inside the first intake chamber (211) and the pressure change of air inside the second exhaust chamber (241).

[0244] FIG. 14 is a flowchart of a control method for a ventilation device according to one embodiment.

[0245] Referring to FIG. 14, the ventilation device (1) can receive connection signals from a plurality of fans (210, 220) (2100). The operation 2100 of FIG. 14 may be the same as the operation 1100 of FIG. 12.

[0246] The processor (321) can obtain the pressure difference between the first pressure (P1) and the second pressure (P2) while not outputting the first control signal and the second control signal (2200).

[0247] The processor (321) can determine an abnormal range corresponding to a fan misassembly state (2300). The operation of 2300 in FIG. 14 may be the same as the operation 1300 in FIG. 12.

[0248] The processor (321) can form a circulation path (R3) (2400). Forming the circulation path (R3) may include controlling a plurality of dampers (31, 32, 33) such that a first damper (31) closes the first intake port (21a), a second damper (32) opens the second intake port (22a), and a third damper (33) allows air to flow from the second intake chamber (221) to the first intake chamber (211).

[0249] In one embodiment, the processor (321) can output a first control signal after controlling a plurality of dampers (31, 32, 33) to form a circulation path (R3) (2500).

[0250] In various embodiments, the processor (321) can determine whether the ventilation device (1) is in a fan misassembled state based on the pressure difference between the first pressure (P1) and the second pressure (P2) while outputting the first control signal after forming the circulation path (R3).

[0251] In one embodiment, the processor (321) may determine that the fan is in a normal assembly state based on the fact that the pressure difference between the first pressure (P1) and the second pressure (P2) corresponds to a normal range after forming the circulation path (R3) and while outputting the first control signal through the first port (81) without outputting the second control signal through the second port (82) (No to 2600 and 2900).

[0252] In one embodiment, the processor (321) may determine that the fan is in a misassembled state based on the fact that the pressure difference between the first pressure (P1) and the second pressure (P2) corresponds to an abnormal range while the processor (321) outputs the first control signal through the first port (81) without outputting the second control signal through the second port (82) after forming the circulation path (R3) (Example of 2600 and 2700).

[0253] In one embodiment, the processor (321) can perform an output port change process based on the determination that the ventilation device (1) is in a fan misassembled state (2800).

[0254] In one embodiment, the processor (321) may announce fan normal assembly information that the first fan (210) and the second fan (220) have been properly assembled after performing an output port change process (2900).

[0255] In one embodiment, the processor (321) may provide fan normal assembly information that the first fan (210) and the second fan (220) are properly assembled based on the pressure difference between the first pressure (P1) and the second pressure (P2) being within a normal range, while the processor (321) outputs the first control signal through the first port (81) without outputting the second control signal through the second port (82) after forming the circulation path (R3) (No and 2900 of 2600).

[0256] FIG. 15 is a diagram illustrating an example of airflow when driving a fan in a fan misassembled state.

[0257] Referring to FIG. 15, when a second control signal is output through the second port (82) among the first port (81) and the second port (82) in a fan misassembled state, air can flow through the supply air passage (R1) according to the operation of the first fan (210; 210a).

[0258] For example, when the first damper (31) opens the first intake port (21a), the second damper (32) opens the second intake port (22a), and the third damper (33) is closed, when a second control signal is output through the second port (82) among the first port (81) and the second port (82) in a fan misassembled state, air can flow through the supply air passage (R1) according to the operation of the first fan (210; 210a).

[0259] Meanwhile, in a fan misassembled state, when the first control signal is output through the first port (81) among the first port (81) and the second port (82), the second fan (220; 220a) is connected to the first port (81), so the second fan (220; 220a) is not driven.

[0260] When the second fan (220; 220a) is driven, the flow rate of air flowing through the exhaust passage (R2) is relatively large, so the pressure is relatively large as it passes through the third filter (123; 123a). For example, the pressure of the air flowing through the exhaust passage (R2) is relatively large as it passes through the third filter (123; 123a).

[0261] On the other hand, when the second fan (220; 220a) is not driven, the flow rate of air flowing through the exhaust passage (R2) is relatively small, so the pressure decreases relatively small as it passes through the third filter (123; 123a). For example, the pressure of the air flowing through the exhaust passage (R2) decreases relatively small as it passes through the third filter (123; 123a).

[0262] According to the present disclosure, a fan misassembly state can be determined by using a change in the pressure of air flowing through the exhaust passage (R2) (e.g., the difference between the third pressure (P3) and the fourth pressure (P4). The change in the pressure of air flowing through the exhaust passage (R2) according to the present disclosure is not limited to that shown in FIG. 15, and may correspond to any two points where the pressure of the air flowing through the exhaust passage (R2) can change. For example, the change in the pressure of air flowing through the exhaust passage (R2) may include, for example, the change in the pressure of air flowing through the exhaust passage (R2) and the change in the pressure of air inside the second intake chamber (221) and the first exhaust chamber (231).

[0263] FIG. 16 is a drawing to explain an example of airflow resulting from driving a fan in a fan misassembled state of a ventilation device having a structure different from that of FIG. 15.

[0264] Referring to FIG. 16, when a second control signal is output through the second port (82) among the first port (81) and the second port (82) in a fan misassembled state, air can flow through the supply air passage (R1) according to the operation of the first fan (210; 210b). For example, when the first intake port (21b) and the second intake port (22b) are open, when a second control signal is output through the second port (82) among the first port (81) and the second port (82) in a fan misassembled state, air can flow through the supply air passage (R1) as the first fan (210; 210b) connected to the second port (82) is driven.

[0265] Meanwhile, in a state where the fan is incorrectly assembled, if the second control signal is output through the second port (82) among the first port (81) and the second port (82), the second fan (220; 220b) is connected to the first port (81), so the second fan (220; 220b) is not driven.

[0266] When the second fan (220; 220b) is not driven, the flow rate of air flowing through the exhaust passage (R2) is relatively small, so the pressure of the air passing through the plurality of third filters (123; 123b, 123c) is reduced relatively small compared to when the second fan (220; 220b) is driven and air flows through the exhaust passage (R2). For example, the pressure difference between the third pressure (P3) of the second intake chamber (222) and the fourth pressure (P4) of the first exhaust chamber (232) may be relatively smaller when the second fan (220; 220b) is not driven than when the second fan (220; 220b) is driven.

[0267] FIG. 17 is a flowchart of a control method for a ventilation device according to one embodiment.

[0268] Referring to FIG. 17, the ventilation device (1) can receive connection signals from a plurality of fans (210, 220) (3100). The operation 3100 of FIG. 17 may be the same as the operation 1100 of FIG. 12 and the operation 2100 of FIG. 14.

[0269] The processor (321) can obtain the pressure difference between the measured third pressure (P3) and the fourth pressure (P4) while not outputting the first control signal and the second control signal (3200). For example, while the first port (81) and the second port (82) each do not output the first control signal and the second control signal, and thus not all fans (210, 220) are driven, the pressure difference between the third pressure (P3) and the fourth pressure (P4) measured by the second differential pressure sensor (72) can be obtained.

[0270] In various embodiments, the processor (321) can determine an abnormal range corresponding to a fan misassembly state (3300).

[0271] The abnormal range corresponding to the fan misassembly state may be the range in which the pressure difference between the third pressure (P3) and the fourth pressure (P4) measured when the second fan (220) is not driven even though the second control signal is output through the second port (82) in the fan misassembly state belongs.

[0272] As described above, the abnormal range corresponding to the fan misassembly state can be determined based on the tolerance value.

[0273] In one embodiment, the processor (321) can determine an abnormal range corresponding to a fan misassembly state based on the difference between the measured third pressure (P3) and fourth pressure (P4) while not outputting the first control signal and the second control signal.

[0274] For example, the abnormal range corresponding to the fan misassembly state may be a range between the sum of the pressure difference between the measured third pressure (P3) and the fourth pressure (P4) and the allowable error value and a predetermined value (e.g., 0 Pa) when all multiple fans (210, 220) are stopped.

[0275] That is, even if all of the multiple fans (210, 220) are stopped, natural airflow generated according to the installation environment of the ventilation device (1) can flow through the exhaust path (R2), so an abnormal range can be determined by reflecting the pressure difference obtained when all of the multiple fans (210, 220) are stopped, thereby identifying a more accurate fan misassembly state.

[0276] The processor (321) can generate a second control signal to check for fan misassembly status. The second port (82) can output the generated second control signal (3400).

[0277] In various embodiments, the processor (321) can determine whether the ventilation device (1) is in a fan misassembled state based on the pressure difference between the third pressure (P3) and the fourth pressure (P4) while outputting a second control signal through the second port (82) without outputting a first control signal through the first port (81).

[0278] In one embodiment, the processor (321) can determine that the fan is in a normal assembly state based on the fact that the pressure difference between the third pressure (P3) and the fourth pressure (P4) corresponds to a normal range while outputting a second control signal through the second port (82) without outputting a first control signal through the first port (81).

[0279] In one embodiment, the processor (321) may determine that the fan is in a misassembled state based on the fact that the pressure difference between the third pressure (P3) and the fourth pressure (P4) corresponds to an abnormal range while outputting a second control signal through the second port (82) without outputting a first control signal through the first port (81) (Examples of 3500 and 3600).

[0280] In one embodiment, the processor (321) can perform an output port change process based on the determination that the ventilation device (1) is in a fan misassembled state (3700).

[0281] In one embodiment, the processor (321) may announce fan normal assembly information that the first fan (210) and the second fan (220) have been properly assembled after performing an output port change process (3800).

[0282] In one embodiment, while the processor (321) outputs a second control signal through the second port (82) without outputting a first control signal through the first port (81), it may announce fan normal assembly information that the first fan (210) and the second fan (220) are normally assembled based on the pressure difference between the third pressure (P3) and the fourth pressure (P4) being within a normal range (No to 3500 and 3800).

[0283] FIG. 18 is a diagram illustrating the normal fan assembly range corresponding to normal fan assembly and the abnormal fan assembly range corresponding to a fan misassembly state.

[0284] Referring to FIG. 18, the abnormal range of the fan assembly can be determined based on the allowable error value (A) and / or the pressure difference measured when all of the multiple fans (210, 220) are stopped.

[0285] For example, the fan assembly abnormal range may be a range between 0 and the sum of the pressure difference between the first pressure (P1) and the second pressure (P2) measured by the first differential pressure sensor (71) when all multiple fans (210, 220) are stopped, and the allowable error value (A) (e.g., △Pa+A).

[0286] As another example, the abnormal range of the fan assembly may be a range between the sum of the pressure difference between the third pressure (P3) and the fourth pressure (P4) measured by the second differential pressure sensor (72) and the allowable error value (A) and 0 when all multiple fans (210, 220) are stopped.

[0287] However, the abnormal range of fan assembly according to the present disclosure is not limited thereto, and the abnormal range of fan assembly may be determined according to various embodiments.

[0288] For example, the abnormal range of the fan assembly may be a range between the allowable error value (A) and 0. As another example, the abnormal range of the fan assembly may be a range between the pressure difference between the first pressure (P1) and the second pressure (P2) measured by the first differential pressure sensor (71) when all of the multiple fans (210, 220) are stopped and 0.

[0289] As another example, the abnormal range of the fan assembly may be a range between the pressure difference between the third pressure (P3) and the fourth pressure (P4) measured by the second differential pressure sensor (72) and zero when all multiple fans (210, 220) are stopped.

[0290] The abnormal range of the fan assembly can be determined as a negative range or a positive range depending on the pressure difference measurement method of the differential pressure sensor (71, 72).

[0291] For example, if the pressure difference measured by the first differential pressure sensor (71) is the value obtained by subtracting the first pressure (P1) from the second pressure (P2) (P2-P1), the first pressure (P1), which is the pressure upstream of the filter (121, 122), is greater than the second pressure (P2), which is the pressure downstream of the filter (121, 122), so the abnormal range of the fan assembly may be a negative range as shown in FIG. 18.

[0292] In another example, if the pressure difference measured by the first differential pressure sensor (71) is the value obtained by subtracting the second pressure (P2) from the first pressure (P1) (P1-P2), the abnormal range of the fan assembly may be a positive range.

[0293] The normal range for fan assembly may be a range that falls outside the abnormal range for fan assembly.

[0294] For example, as shown in FIG. 18, if the abnormal range of the fan assembly is a negative range, the normal range of the fan assembly may be a range in which a value smaller than the abnormal range of the fan assembly belongs.

[0295] As another example, if the abnormal range of the fan assembly is a positive range as shown in FIG. 18, the normal range of the fan assembly may be a range in which a value greater than the abnormal range of the fan assembly belongs.

[0296] While the processor (321) outputs a first control signal through the first port (81) without outputting a second control signal through the second port (82), it can determine that a plurality of fans (210, 220) are properly assembled based on the pressure difference (△Pb2) between the measured first pressure (P1) and the second pressure (P2) being within the normal range for fan assembly.

[0297] The processor (321) can determine that the plurality of fans (210, 220) are in a normal assembled state based on the fact that the pressure difference (△Pb2) between the measured third pressure (P3) and fourth pressure (P4) falls within the normal range for fan assembly, while the processor (321) outputs the second control signal through the second port (82) without outputting the first control signal through the first port (81).

[0298] While the processor (321) outputs the first control signal through the first port (81) without outputting the second control signal through the second port (82), it can determine that the multiple fans (210, 220) are in a misassembled state based on the pressure difference (△Pb1) between the measured first pressure (P1) and the second pressure (P2) being within the abnormal range of fan assembly.

[0299] The processor (321) can determine that a plurality of fans (210, 220) are incorrectly assembled based on the fact that the pressure difference (△Pb1) between the measured third pressure (P3) and fourth pressure (P4) falls within the abnormal range of fan assembly, while the processor (321) outputs a second control signal through the second port (82) without outputting a first control signal through the first port (81).

[0300] A ventilation device (1) according to one embodiment comprises: a housing (10); a filter (121, 122, 123) provided within the housing (10); a first fan (210) for flowing air into the housing (10); a second fan (220) for flowing air into the housing (10); a first port (81) for outputting a first control signal for driving the first fan (210); and a second port (82) for outputting a second control signal for driving the second fan (220). and may include a processor (321) that determines whether the ventilation device (1) is in a fan misassembly state where the first fan (210) is connected to the second port (82) and the second fan (220) is connected to the first port (81) based on the pressure difference between the first pressure upstream of the filter (121, 122, 123) and the second pressure downstream of the filter (121, 122, 123) while outputting the first control signal.

[0301] Additionally, the processor (321) may determine that the ventilation device (1) is in a fan misassembled state based on the pressure difference between the first pressure and the second pressure corresponding to a defined abnormal range while outputting the first control signal.

[0302] Additionally, the processor (321) can determine the abnormal range based on the pressure difference between the first pressure and the second pressure while not outputting the first control signal and the second control signal.

[0303] Additionally, the processor (321) can perform an output port change process, which outputs the second control signal through the first port (81) and outputs the first control signal through the second port (82), based on the determination that the ventilation device (1) is in a fan misassembled state.

[0304] Additionally, the processor (321) may announce that the first fan (210) and the second fan (220) have been properly assembled after performing the output port change process.

[0305] Additionally, the processor (321) may provide information that the first fan (210) and the second fan (220) are properly assembled based on the pressure difference between the first pressure and the second pressure being within a normal range while outputting the first control signal.

[0306] A ventilation device (1) according to one embodiment further includes a damper that changes the path of air flowing through the housing (10); the housing (10) includes an intake port and an exhaust port; and the processor (321) can output the first control signal after controlling the damper to form a circulation path so that air sucked into the housing (10) through the intake port is discharged to the exhaust port.

[0307] Additionally, the processor (321) can determine whether the fan is in a misassembled state based on the pressure difference between the third pressure upstream of the filter (121, 122, 123) and the fourth pressure downstream of the filter (121, 122, 123) while outputting the second control signal.

[0308] Additionally, the processor (321) can check whether the fan is misassembled in response to receiving a connection signal generated by both the first port (81) and the second port (82) being electrically connected to either the first fan (210) or the second fan (220).

[0309] A control method for a ventilation device (1) according to one embodiment comprises a housing (10), a filter (121, 122, 123) provided within the housing (10), a first fan (210) for flowing air into the housing (10), a second fan (220) for flowing air into the housing (10), a first port (81) for outputting a first control signal for driving the first fan (210), and a second port (82) for outputting a second control signal for driving the second fan (220). In the control method for a ventilation device (1), while the first control signal is being output, based on the pressure difference between a first pressure upstream of the filter (121, 122, 123) and a second pressure downstream of the filter (121, 122, 123), the ventilation device (1) is configured such that the first fan (210) is connected to the second port (82) and the second It may include determining whether the fan (220) is in a fan misassembled state connected to the first port (81).

[0310] Determining whether the ventilation device (1) is in the fan misassembled state may include determining that the ventilation device (1) is in the fan misassembled state based on the pressure difference between the first pressure and the second pressure corresponding to a defined abnormal range while outputting the first control signal.

[0311] A control method for a ventilation device (1) according to one embodiment may further include determining the abnormal range based on the pressure difference between the first pressure and the second pressure while the first control signal and the second control signal are not output.

[0312] A control method for a ventilation device (1) according to one embodiment may further include performing an output port change process in which the second control signal is output through the first port (81) and the second control signal is output through the second port (82) based on the determination that the ventilation device (1) is in a fan misassembled state.

[0313] A control method for a ventilation device (1) according to one embodiment may further include announcing that the first fan (210) and the second fan (220) have been properly assembled after performing the output port change process.

[0314] A control method for a ventilation device (1) according to one embodiment may further include announcing that the first fan (210) and the second fan (220) are properly assembled based on the pressure difference between the first pressure and the second pressure being within a normal range while outputting the first control signal.

[0315] The ventilation device (1) according to one embodiment further includes a damper that changes the path of air flowing through the housing (10); the housing (10) includes an intake port and an exhaust port; and the control method of the ventilation device (1) according to one embodiment may further include outputting the first control signal after controlling the damper to form a circulation path so that air sucked into the housing (10) through the intake port is discharged to the exhaust port.

[0316] A control method for a ventilation device (1) according to one embodiment may further include determining whether the fan is in a misassembled state based on the pressure difference between the third pressure upstream of the filter (121, 122, 123) and the fourth pressure downstream of the filter (121, 122, 123) while outputting the second control signal.

[0317] A control method for a ventilation device (1) according to one embodiment may further include checking whether the fan is in a misassembled state in response to receiving a connection signal generated by both the first port (81) and the second port (82) being electrically connected to either the first fan (210) or the second fan (220).

[0318] The disclosed ventilation device and control method can perform normal ventilation operation without separate assembly by the user by determining the misassembly state of a plurality of fans that flow air into the housing and proceeding with an output port change process based on the determination of the misassembly state of the plurality of fans.

[0319] The disclosed ventilation device and its control method can reduce manufacturing costs by minimizing the types of connectors connecting multiple fans and ports.

[0320] Meanwhile, the disclosed embodiments may be implemented in the form of a recording medium that stores instructions executable by a computer. The instructions may be stored in the form of program code and, when executed by a processor, may generate a program module to perform the operation of the disclosed embodiments. The recording medium may be implemented as a computer-readable recording medium.

[0321] Computer-readable recording media include all types of recording media that store instructions that can be decoded by a computer. Examples include ROM (read-only memory), RAM (random access memory), magnetic tape, magnetic disk, flash memory, optical data storage devices, etc.

[0322] Additionally, computer-readable recording media may be provided in the form of non-transitory storage media. Here, 'non-transitory storage media' simply means that it is a tangible device and does not contain a signal (e.g., electromagnetic waves), and this term does not distinguish between cases where data is stored semi-permanently and cases where it is stored temporarily. For example, 'non-transitory storage media' may include a buffer in which data is stored temporarily.

[0323] According to one embodiment, the method according to the various embodiments disclosed herein may be provided as included in a computer program product. The computer program product may be traded between a seller and a buyer as a product. The computer program product may be distributed in the form of a device-readable recording medium (e.g., compact disc read-only memory (CD-ROM)), or distributed online (e.g., download or upload) through an application store (e.g., Play Store™) or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product (e.g., downloadable app) may be temporarily stored or temporarily created on a device-readable recording medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0324] As described above, the disclosed embodiments have been explained with reference to the attached drawings. Those skilled in the art will understand that the present invention may be practiced in forms different from the disclosed embodiments without changing the technical spirit or essential features of the invention. The disclosed embodiments are illustrative and should not be interpreted restrictively.

Claims

1. Housing; A filter provided within the above housing; A first fan that flows air into the housing above; A second fan that flows air into the housing above; A first port that outputs a first control signal for driving the first fan; A second port for outputting a second control signal for driving the second fan; and A ventilation device comprising: a processor that, while outputting the first control signal, determines whether the ventilation device is in a fan misassembly state where the first fan is connected to the second port and the second fan is connected to the first port based on the pressure difference between the first pressure upstream of the filter and the second pressure downstream of the filter.

2. In Paragraph 1, The above processor is, A ventilation device that determines that the ventilation device is in a fan misassembled state based on the pressure difference between the first pressure and the second pressure corresponding to a defined abnormal range while outputting the first control signal.

3. In Paragraph 2, The above processor is, A ventilation device that determines the abnormal range based on the pressure difference between the first pressure and the second pressure while not outputting the first control signal and the second control signal.

4. In Paragraph 1, The above processor is, A ventilation device that performs an output port change process, which outputs the second control signal through the first port and outputs the first control signal through the second port, based on the determination that the ventilation device is in a fan misassembled state.

5. In Paragraph 4, The above processor is, A ventilation device that announces information that the first fan and the second fan have been properly assembled after performing the above output port change process.

6. In Paragraph 2, The above processor is, A ventilation device that, while outputting the first control signal, provides information that the first fan and the second fan are properly assembled based on the pressure difference between the first pressure and the second pressure being within a normal range.

7. In Paragraph 1, It further includes a damper that changes the airflow path through the above housing, and The above housing is, Includes an intake port and an exhaust port, The above processor is, A ventilation device that outputs the first control signal after controlling the damper to form a circulation path so that air sucked into the housing through the intake port is discharged through the exhaust port.

8. In Paragraph 1, The above processor is, A ventilation device that determines whether the fan is in a misassembled state based on the pressure difference between the third pressure upstream of the filter and the fourth pressure downstream of the filter while outputting the second control signal.

9. In Paragraph 1, The above processor is, A ventilation device that checks whether the fan is in an incorrectly assembled state in response to receiving a connection signal generated by both the first port and the second port being electrically connected to either the first fan or the second fan.

10. A method for controlling a ventilation device comprising a housing, a filter provided within the housing, a first fan for flowing air into the housing, a second fan for flowing air into the housing, a first port for outputting a first control signal for driving the first fan, and a second port for outputting a second control signal for driving the second fan. A method for controlling a ventilation device, comprising determining whether the ventilation device is in a fan misassembly state where the first fan is connected to the second port and the second fan is connected to the first port, based on the pressure difference between the first pressure upstream of the filter and the second pressure downstream of the filter while outputting the first control signal.

11. In Paragraph 10, Determining whether the above ventilation device is in the above fan misassembled state is, A method for controlling a ventilation device comprising: determining that the ventilation device is in a fan misassembled state based on the pressure difference between the first pressure and the second pressure corresponding to a defined abnormal range while outputting the first control signal.

12. In Paragraph 11, A control method for a ventilation device further comprising determining the abnormal range based on the pressure difference between the first pressure and the second pressure while not outputting the first control signal and the second control signal.

13. In Paragraph 10, A method for controlling a ventilation device, further comprising: performing an output port change process in which the second control signal is output through the first port and the first control signal is output through the second port based on the determination that the ventilation device is in a fan misassembled state.

14. In Paragraph 13, A control method for a ventilation device further comprising announcing information that the first fan and the second fan have been properly assembled after performing the above output port change process.

15. In Paragraph 11, A control method for a ventilation device further comprising: announcing information that the first fan and the second fan are properly assembled based on the pressure difference between the first pressure and the second pressure being within a normal range while outputting the first control signal.

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