Ventilation apparatus

Abstract

The present invention relates to a ventilation apparatus. The present invention may comprise: a ventilation casing (10) having an external air introduction path and an internal air discharge path in an inner space (S1); and an air treatment unit (100) disposed at a position at which the external air introduction path and the internal air discharge path intersect. The ventilation casing (10) can include: a first opening (RH1) through which first surfaces (111, 131) of the air treatment unit (100) are exposed; and a second opening (RH2) through which second surfaces (112, 132) of the air treatment unit (100), which are opposite to the first surfaces, are exposed. The first cover (80) can cover the first opening (RH1). The second cover (90) can cover the second opening (RH2). Therefore, when the first cover (80) is opened, the air treatment unit (100) can enter and exit the inner space (S1) through the first opening (RH1). When the second cover (90) is opened, the air treatment unit (100) can enter and exit the inner space (S1) through the second opening (RH2). Thus, the air treatment unit (100, a total heat exchanger (110) and filters (130, 140)) provided in the ventilation apparatus of the present invention can be accessed in two different directions, and the ventilation apparatuses can be applied to respective installation places that are structurally symmetrical.

Description

ventilation system

[0001] The present invention relates to a ventilation device.

[0002] Ventilation systems exhaust polluted indoor air to the outdoors and supply fresh outdoor air indoors, maintaining a certain level of indoor air freshness. For example, in public facilities like school classrooms and hospital rooms, or single-family homes like apartments and villas, indoor air can become rapidly polluted, making ventilation systems invaluable. They can exchange fresh outdoor air with stale indoor air, reducing air pollution levels.

[0003] Recently, heat exchangers have been added to ventilation systems to minimize heat loss during ventilation. These exchangers exchange heat between air drawn in from the outside and air exhausted from the inside, transferring the heat through different flow paths. These heat exchangers utilize the principle of heat exchange to exchange heat between two air streams with different temperatures (air drawn in from the outside and air exhausted from the inside).

[0004] These ventilation systems are also applied to multi-unit buildings such as apartments. For example, each apartment unit is equipped with a ventilation system, which supplies fresh outdoor air to multiple indoor spaces through ventilation ducts connected to the ventilation system, while simultaneously drawing in polluted indoor air and discharging it to the outside.

[0005] However, apartment buildings and other multi-unit buildings can have adjacent units that are symmetrical. This creates the problem of incompatible ventilation systems between these symmetrical units. Because the piping runs in opposite directions between the two symmetrical units, it's difficult to install the ventilation system's pipes and ducts identically, and piping can become tangled, hindering airflow. In other words, even if a ventilation system is properly installed in one unit, the length, direction, and connection method of the piping may differ in the opposite unit of the symmetrical structure.

[0006] In this way, the ventilation system connection method may differ between opposing generations of a symmetrical structure, which may affect air circulation paths and ventilation efficiency. For example, even if the same ventilation system is used, the ventilation efficiency of two symmetrical generations may differ.

[0007] In addition, if the installation space of the ventilation device is symmetrical, there is a problem of reduced maintainability because the ventilation device is installed in a different location and manner in each generation.

[0008] To address this, the ventilation system's internal piping can be expanded to accommodate symmetrical structures, or multiple filters can be installed. However, this increases the number of components in the ventilation system, creating new problems such as an increase in the overall area or height of the system.

[0009] Meanwhile, ventilation systems are increasingly offering bypass functionality. Bypass refers to the process of filtering and then introducing outdoor air into a room without heat exchange on days when the indoor-outdoor temperature difference is small, or, conversely, exhausting indoor air directly to the outside without heat exchange. However, implementing this bypass structure requires the creation of a separate flow path within the ventilation system. Therefore, the more complex the internal structure of the ventilation system, the more difficult it becomes to implement the bypass function.

[0010] The present invention is intended to solve the problems of the prior art as described above, and the purpose of the present invention is to provide a ventilation device that can be applied to each installation location having a symmetrical structure.

[0011] Another object of the present invention is to enable the same ventilation device to be applied to two symmetrical installation locations simply by installing the ventilation device upside down.

[0012] Another object of the present invention is to implement a bypass function even when the ventilation device is installed upside down to suit the installation location.

[0013] According to the features of the present invention for achieving the above-mentioned purpose, the present invention may include a ventilation casing in which an outside air introduction path and an inside air discharge path are formed in an internal space, and an air treatment unit arranged at a position where the outside air introduction path and the inside air discharge path intersect. The ventilation casing may include a first opening exposing a first surface of the air treatment unit, and a second opening exposing a second surface of the air treatment unit opposite to the first surface.

[0014] At this time, the first cover can cover the first opening. The second cover can cover the second opening. Accordingly, when the first cover is opened, the air treatment unit can be introduced into and introduced out of the internal space through the first opening. When the second cover is opened, the air treatment unit can be introduced into and introduced out of the internal space through the second opening. In this way, the air treatment unit (heat exchanger and filter) provided in the ventilation device of the present invention can be accessed from two different directions, and the ventilation device can be applied to installation locations having symmetrical structures.

[0015] In addition, the first opening and the second opening may be formed on both sides of the internal space. The first opening and the second opening may be connected to each other through the internal space.

[0016] Additionally, the first opening and the second opening may be positioned facing each other.

[0017] And, the first opening and the second opening may have the same shape.

[0018] In addition, the first opening and the second opening may be formed in a direction perpendicular to the direction in which the external air introduction path and the internal air exhaust path extend.

[0019] In addition, the air treatment unit may include a heat exchanger arranged on a path where the outside air introduction path and the inside air exhaust path interchange with each other, and a filter arranged on the outside air introduction path and purifying the outside air. At this time, a first surface of the heat exchanger and a first surface of the filter may be exposed through the first opening, respectively. A second surface of the heat exchanger and a second surface of the filter may be exposed through the second opening, respectively.

[0020] Additionally, when the ventilation casing is arranged such that the first opening faces downward, the air treatment unit can be separated downward through the first opening. When the ventilation casing is arranged such that the second opening faces downward, the air treatment unit can be separated downward through the second opening.

[0021] In addition, a bypass path can be formed in the internal space of the ventilation casing, which forms an independent path from the internal exhaust path and the external air introduction path.

[0022] Additionally, the bypass path may be formed around the periphery of the air treatment unit. The bypass path may be formed along the edge of the internal space.

[0023] In addition, a first handle may be provided on the first surface of the air treatment unit. A second handle may be provided on the second surface of the air treatment unit.

[0024] In addition, the outside air introduction path may include an outside opening formed on the front of the ventilation casing and through which outside air is introduced, and an air supply opening formed on the rear of the ventilation casing and connected to the outside opening to discharge the outside air introduced through the outside opening into the room. The inside air discharge path may include a ventilation opening formed on the rear of the ventilation casing and connected to the ventilation opening to discharge the inside air, and an exhaust opening formed on the front of the ventilation casing and connected to the ventilation opening to discharge the inside air introduced through the ventilation opening into the room.

[0025] In addition, a bypass path connecting the ventilation port and the exhaust port may be formed in the internal space. The bypass path may have independent paths from the external air introduction path and the internal air exhaust path.

[0026] Additionally, the bypass flow path may include a first bypass flow path extending in a first direction perpendicular to the direction in which the ventilation port is opened, and a second bypass flow path connected to the first bypass flow path and extending in a second direction identical to the direction in which the exhaust port is opened.

[0027] In addition, the first bypass flow path may be formed between the ventilation port and the supply port. The second bypass flow path may be formed between the supply port and the exhaust port.

[0028] In addition, the internal space is provided with an outside air intake fan for sucking in outside air, and the outside air intake fan can be positioned on the outside air intake path. The internal space is provided with an inside exhaust fan for exhausting inside air, and the inside exhaust fan can be positioned on the inside exhaust path.

[0029] In addition, a mounting space in which the air processing unit is placed can be formed at the center of the internal space. A mounting frame supporting the air processing unit can be fixed to the mounting space.

[0030] Additionally, the air treatment unit and the mounting frame may be formed with corresponding coupling protrusions and coupling grooves. When the air treatment unit is placed in the mounting space, the coupling protrusions may be fitted into the coupling grooves.

[0031] In addition, the coupling protrusion or the coupling groove may be formed on the side of the heat exchanger and the side of the filter. The coupling groove or the coupling protrusion may be formed on the surface of the mounting frame.

[0032] In addition, the coupling protrusion and the coupling groove can extend in a direction perpendicular to the direction in which the air treatment unit is attached and detached between the mounting parts.

[0033] In addition, the mounting frame may be provided with a support member that supports at least one of the first side of the air treatment unit or the second side of the filter.

[0034] In addition, the support part may include a fixed body fixed to the mounting frame, and a support body that rotates relative to the fixed body or moves linearly relative to the fixed body and supports the first surface of the air treatment unit or the second surface of the air treatment unit.

[0035] In addition, a relative support portion may be provided on the first surface of the air treatment unit or the second surface of the air treatment unit, and a support body that is in close contact with the relative support portion may be provided on the support portion. The relative support portion and the support body may be magnetically coupled to each other.

[0036] In addition, a mounting space in which the air processing unit is placed may be formed at the center of the internal space. The mounting space may be provided with a mounting bar that rotates around a rotational axis extending in the direction of attachment or detachment of the air processing unit. When the mounting bar rotates, the mounting bar and the air processing unit may interfere with each other, or the interference may be eliminated.

[0037] In addition, a locking part may be protruded from the mounting bar, and a locking groove into which the locking part is inserted may be formed in the air processing unit. When the mounting bar is rotated, the locking part may be inserted into the locking groove.

[0038] Additionally, the mounting bar is provided with a lever, and the lever can protrude in a direction in which the air treatment unit is separated from the mounting bar.

[0039] And, when the ventilation casing is rotated 180 degrees around an imaginary rotation axis that crosses the center of the air treatment unit in the direction in which outside air is sucked in through the outside air introduction path, the first opening and the second opening can face opposite directions.

[0040] The ventilation device according to the present invention as discussed above has the following effects.

[0041] The air treatment unit (heat exchanger and filter) provided in the ventilation device according to the present invention can be accessed from two different directions. Accordingly, the ventilation device can be applied to installation locations with symmetrical structures. This allows a single ventilation device to be installed in multiple locations, offering the advantage of high location compatibility.

[0042] In particular, according to the present invention, the ventilation device can be installed in a first orientation and applied to a first-type location, or can be installed in a second orientation and applied to a second-type location by flipping the ventilation device over. Thus, the ventilation device of the present invention can be applied to various locations simply by flipping it over, without the need to reassemble parts or change its shape, thereby improving installation convenience.

[0043] Furthermore, the bypass function of the present invention can be implemented whether the ventilation device is installed in the first or second direction. In other words, even if the ventilation device is installed upside down to suit the installation location, the bypass function is implemented equally. Therefore, the present invention can achieve rapid ventilation effects by implementing the bypass function in various environments.

[0044] In particular, in the present invention, a bypass path can be formed within the ventilation device without interference with internal structures such as an air circulation fan. Accordingly, there is an advantage in that the bypass function can be implemented while preventing an increase in the overall thickness of the ventilation device.

[0045] Additionally, the air treatment unit (heat exchanger and filter) constituting the ventilation device of the present invention can be detached from the ventilation device both when installed in the first direction and when installed in the second direction. Therefore, the ventilation device of the present invention also has the effect of excellent maintainability.

[0046] In particular, removing the first or second cover, which is located on opposite sides of the ventilation system, allows the operator to directly access the air handling unit. Therefore, regardless of the ventilation system's installation orientation, the operator can maintain the air handling unit by simply removing the cover without having to disassemble the entire ventilation system, thereby improving convenience.

[0047] In addition, in the present invention, the air treatment unit constituting the ventilation device and the mounting frame within the ventilation device may be formed with corresponding engaging protrusions and engaging grooves. When the engaging protrusions and engaging grooves are engaged with each other, the air treatment unit can be fixed to the internal space of the ventilation device. Accordingly, even if the cover of the ventilation device is removed, the air treatment unit can remain fixed within the ventilation device, thereby providing the advantage of excellent maintainability of the ventilation device.

[0048] In addition, the ventilation device of the present invention may be equipped with a support member. The support member can hang on the surface of the air treatment unit and maintain the air treatment unit in a mounted state within the ventilation device. The operator can detach the air treatment unit by rotating or linearly moving the support member, thereby facilitating the replacement of the air treatment unit.

[0049] In addition, in the present invention, a mounting bar is rotatably positioned within the ventilation device, and the air treatment unit can be fixed or separated according to the rotation of the mounting bar. Therefore, a worker can easily detach and attach the air treatment unit by rotating the mounting bar. At this time, since the mounting bar hangs and secures a portion of the air treatment unit, even heavy components such as a heat exchanger can be stably fixed within the ventilation device, thereby enhancing the stability of the ventilation device.

[0050] In addition, in the present invention, the first and second surfaces of the air treatment unit, which are positioned on opposite sides, may be provided with a first handle and a second handle, respectively. When attaching or detaching the air treatment unit in the first direction, the operator may grasp the first handle, and conversely, when attaching or detaching the air treatment unit in the second direction, the operator may grasp the second handle. In this way, the use of a pair of handles facilitates the attachment or detachment of the air treatment unit.

[0051] Figure 1 is a perspective view showing an example of a ventilation device according to the present invention arranged in a first direction.

[0052] Figure 2 is a perspective view showing an example of a ventilation device according to the present invention arranged in a second direction.

[0053] Figure 3 is a perspective view showing an example of a ventilation device according to the present invention, with the first cover separated, in a first direction.

[0054] FIG. 4 is a perspective view showing an example of a ventilation device according to the present invention, arranged in the first direction, with the first cover separated and the heat exchanger separated from the air treatment unit.

[0055] FIG. 5 is a perspective view showing an example of a ventilation device according to the present invention, arranged in the first direction, with the filter in the air treatment unit separated after the first cover is separated.

[0056] Fig. 6 is a perspective view showing an example of a ventilation device according to the present invention, arranged in a second direction, with the second cover separated.

[0057] Fig. 7 is a perspective view showing an example of a ventilation device according to the present invention, arranged in the second direction, with the heat exchanger in the air treatment unit separated after the second cover is separated.

[0058] Fig. 8 is a perspective view showing an example of a ventilation device according to the present invention, arranged in a second direction, with the filter in the air treatment unit separated after the second cover is separated.

[0059] Figure 9 is a perspective view showing the components constituting an example of a ventilation device according to the present invention in an exploded manner.

[0060] Fig. 10 is a perspective view showing the components constituting an example of a ventilation device according to the present invention, taken from a different angle than Fig. 9.

[0061] Fig. 11 is a perspective view showing the internal structure of a ventilation device according to the present invention with the first cover removed, with the ventilation device arranged in the second direction.

[0062] Fig. 12 is a perspective view showing an example of a ventilation device according to the present invention, arranged in the first direction, with the second cover removed.

[0063] Figure 13 is a conceptual diagram illustrating an example of a ventilation device according to the present invention, in which air flows into the interior of the ventilation device when the ventilation device is arranged in the first direction.

[0064] Fig. 14 is a conceptual diagram illustrating an example of a ventilation device according to the present invention, in which air flows into the interior of the ventilation device when the ventilation device is arranged in a second direction.

[0065] Fig. 15 is a perspective view showing the structure of a first euro housing constituting an example of a ventilation device according to the present invention.

[0066] Fig. 16 is a perspective view showing the structure of the first euro housing constituting one embodiment of a ventilation device according to the present invention from a different angle than Fig. 15.

[0067] Fig. 17 is a perspective view showing the structure of an air treatment unit and a mounting frame constituting an example of a ventilation device according to the present invention.

[0068] Fig. 18 is a perspective view showing the structure of a filter and a mounting frame among the air treatment units constituting an example of a ventilation device according to the present invention.

[0069] Fig. 19 is a perspective view showing an exploded view of a filter and a mounting frame constituting an example of a ventilation device according to the present invention.

[0070] Fig. 20(a) and Fig. 20(b) are perspective views showing the operating state of the first support part by enlarging part A of Fig. 17.

[0071] Figures 21(a) and 21(b) are perspective views showing the operating state of the first support part by enlarging part B of Figure 17.

[0072] Figures 22(a) and 22(b) are perspective views showing the operating state of the second support part by enlarging part A of Figure 17.

[0073] FIG. 23(a) and FIG. 23(b) are perspective views showing a state in which a mounting bar constituting an example of a ventilation device according to the present invention is coupled to or separated from a mounting plate of an air treatment unit as the mounting bar rotates.

[0074] Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. When designating components in each drawing, it should be noted that, where possible, identical components will be given the same reference numerals, even if they appear in different drawings. Furthermore, when describing embodiments of the present invention, if a detailed description of a related known structure or function is deemed to hinder understanding of the embodiments of the present invention, such detailed description will be omitted.

[0075] The present invention relates to a ventilation device. The present invention can ventilate an indoor space by exhausting indoor air to the outside and introducing outdoor air into the interior, thereby increasing energy efficiency through heat exchange during this process. Furthermore, the present invention can be installed in two different directions. To achieve this function, the ventilation device of the present invention can have its internal air treatment unit (100) detachable and implement a bypass function, even when installed in two different directions. Below, the detachable structure of the air treatment unit (100) and the bypass structure will be described.

[0076] FIG. 1 and FIG. 2 illustrate a ventilation device according to an embodiment of the present invention when installed in a first direction and when installed in a second direction, respectively. Hereinafter, the ventilation device installed in the first direction will be referred to as a first installation state, and the ventilation device installed in the second direction will be referred to as a second installation state.

[0077] For reference, based on the first installation state in which the ventilation device is installed in the first direction, U among the direction marks in the drawing indicates the upper side of the ventilation device, and D indicates the lower side. D can be regarded as the direction in which the first cover described later is facing. In addition, I in the drawing indicates the inside of the installation space of the ventilation device, that is, the indoor direction, and O indicates the outside of the installation space, that is, the outdoor direction. In Fig. 1, the ventilation device is in the first installation state, and therefore, the drawing symbol U points toward the ceiling. In Fig. 2, the ventilation device is in the second installation state flipped over from the first installation state, and at this time, the drawing symbol U points toward the floor. Below, the front of the ventilation device is defined as a surface facing the outdoors, and the rear of the ventilation device is defined as a surface facing the indoors.

[0078] Also, in the following, outside air refers to the air outside, for example, the air outside a building. And inside air refers to the air inside a building.

[0079] In this embodiment, the external opening (OH1), the exhaust opening (OH2), the supply opening (IH1), and the ventilation opening (IH2) of the ventilation device may be respectively positioned offset to one side from the center of the height direction of the ventilation device. Accordingly, comparing FIGS. 1 and 2, when the ventilation device is in the first installation state (the state of FIG. 1), the external opening (OH1), the exhaust opening (OH2), the supply opening (IH1), and the ventilation opening (IH2) are respectively positioned at the upper part near the ceiling. Conversely, when the ventilation device is in the second installation state (the state of FIG. 2), the external opening (OH1), the exhaust opening (OH2), the supply opening (IH1), and the ventilation opening (IH2) are respectively positioned at the lower part near the floor.

[0080] At this time, the external opening (OH1) is formed on the front of the ventilation casing (10) and is a part through which external air is introduced. The supply opening (IH1) is formed on the rear of the ventilation casing (10) and is connected to the external opening (OH1) so that the external air introduced through the external opening (OH1) can be discharged indoors. The ventilation opening (IH2) is formed on the rear of the ventilation casing (10) and is a part through which internal air is discharged. The exhaust opening (OH2) is formed on the front of the ventilation casing (10), is connected to the ventilation opening (IH2), and can discharge the internal air introduced through the ventilation opening (IH2) outdoors.

[0081] As described below, the external opening (OH1) and the supply opening (IH1) are connected to each other to form an external air inlet passage. The ventilation opening (IH2) and the exhaust opening (OH2) are connected to each other to form an internal air discharge passage. In Fig. 2, the unexplained symbol SH represents a service hole, and electrical components such as connectors can be installed inside the ventilation device through the service hole (SH).

[0082] In this embodiment, the covers (80, 90) of the ventilation device can be opened downward. Here, the covers (80, 90) can include a first cover (80) and a second cover (90). FIG. 3 illustrates a state in which the first cover (80) is separated when the ventilation device is in a first installation state. When the first cover (80) is separated in this manner, the first opening (RH1) is opened, and the air treatment unit (100) can be exposed through the opened first opening (RH1). Meanwhile, FIG. 6 illustrates a state in which the second cover (90) is separated when the ventilation device is in a second installation state. When the second cover (90) is separated in this manner, the second opening (RH2) is opened, and the air treatment unit (100) can be exposed through the opened second opening (RH2).

[0083] Referring again to FIG. 3, the first cover (80) can be opened by rotation. When the first cover (80) is opened, the first opening (RH1) is exposed. Drawing reference numeral 85 indicates a cover hinge, and the first cover (80) can be opened by rotating around the cover hinge (85). In another example, it can be separated downward from the ventilation device.

[0084] FIGS. 4 and 5 illustrate the air treatment unit (100) of the ventilation device being separated. For reference, in order to clearly show the internal space (S1) of the ventilation device and the air treatment unit (100), FIGS. 4 and 5 illustrate the first cover (80) being omitted. First, referring to FIG. 4, the first opening (RH1) of the ventilation device is exposed. Through the first opening (RH1) thus exposed, the heat exchanger (110) constituting the ventilation device can be separated downward (R1). A first heat exchanger handle (115) is provided on the first surface (111) of the heat exchanger (110), so that a worker can hold it. The heat exchanger (110) can be detached from the ventilation device independently of the filter (130, 140) constituting the air treatment unit (100). In Fig. 4, it can be seen that the filter (130, 140) remains in the internal space (S1) of the ventilation device.

[0085] Referring to Fig. 5, the filter (130, 140) constituting the ventilation device can be separated downward (R1) through the exposed first opening (RH1). A first filter handle (135) is provided on the first surface (131) of the filter (130, 140) so that the worker can hold it. The filter (130, 140) can be detached from the ventilation device independently of the heat exchanger (110) constituting the air treatment unit (100). In Fig. 5, the heat exchanger (110) can be seen remaining in the internal space (S1) of the ventilation device. Of course, the heat exchanger (110) and the filter (130, 140) can be separated from the ventilation device at the same time. For reference, Fig. 5 shows that among the filters (130, 140), only the HEPA filter (130) is separated, and the pre-filter (140) is not separated.

[0086] Fig. 6 illustrates a state in which the ventilation device is installed in a second installation state. In this state, when the second cover (90) of the ventilation device is separated, the second opening (RH2) is opened. The second opening (RH2) may be formed on the opposite side from the first opening (RH1). In the present embodiment, the first opening (RH1) and the second opening (RH2) have the same shape. Accordingly, the air treatment unit (100) can be attached and detached in the same manner through the first opening (RH1) and the second opening (RH2).

[0087] The first opening (RH1) and the second opening (RH2) may be formed in a direction perpendicular to the direction in which the outdoor air introduction path and the indoor air exhaust path extend. Accordingly, the air treatment unit (100) may be separated downward, i.e., toward the indoor floor, or coupled toward the ceiling. In the drawing, U and D both represent directions perpendicular to the direction in which the outdoor air introduction path and the indoor air exhaust path extend.

[0088] Referring to Fig. 7, when the ventilation device is installed in the second installation state, the heat exchanger (110) can be separated downwards (R2). After the second cover (90) is separated, the heat exchanger (110) constituting the ventilation device can be separated downwards (R2) through the exposed second opening (RH2). A second heat exchanger handle (116) is provided on the second surface (112) of the heat exchanger (110) so that a worker can hold it. The heat exchanger (110) can be detached from the ventilation device independently of the filter (130, 140) constituting the air treatment unit (100).

[0089] Comparing Fig. 7 with Fig. 4, the heat exchanger (110) can be separated in the same direction (R1, R2) when the ventilation device is in the first installation state and the second installation state, respectively. The first opening (RH1) and the second opening (RH2) formed at each end of the internal space (S1) are arranged to face each other and are formed continuously. Accordingly, the heat exchanger (110) can be separated into both the first opening (RH1) and the second opening (RH2).

[0090] Referring to Fig. 8, the filter (130, 140) constituting the ventilation device can be separated downward (R2) through the exposed second opening (RH2). A second filter handle (135) is provided on the second surface (132) of the filter (130, 140) so that the worker can grip it. The filter (130, 140) can be detached from the ventilation device independently of the heat exchanger (110) constituting the air treatment unit (100). For reference, Fig. 8 illustrates that among the filters (130, 140), only the HEPA filter (130) is separated, and the pre-filter (140) is not separated.

[0091] In this embodiment, the first opening (RH1) and the second opening (RH2) are formed on both sides of the internal space (S1), respectively. At this time, the first opening (RH1) and the second opening (RH2) can be connected to each other through the internal space (S1). Accordingly, the air treatment unit (100) can be attached and detached to both the first opening (RH1) and the second opening (RH2), and can be stored in the internal space (S1) through both the first opening (RH1) and the second opening (RH2), respectively.

[0092] Referring to FIGS. 9 and 10, the components constituting the ventilation device will be examined. Referring to FIG. 9, components for heat exchange and purification of air may be arranged between the first cover (80) and the second cover (90). These components may be covered by the first cover (80) and the second cover (90).

[0093] The skeleton of the ventilation device may be formed by a ventilation casing (10) together with the first cover (80) and the second cover (90). The ventilation casing (10) may have an approximately square frame shape. In the present embodiment, the ventilation casing (10) includes a pair of side plates (11), a front plate (13), and a rear plate (17). In FIGS. 9 and 10 , the front plate (13) and the rear plate (17) are depicted as being separated from the pair of side plates (11), but they may be combined with each other to form a square frame shape. The first cover (80) and the second cover (90) may be combined with the ventilation casing (10).

[0094] The front plate (13) may be provided with a front duct (14, 15). The front duct (14, 15) includes a first front duct (14) and a second front duct (15). An external port (OH1) is opened in the first front duct (14), and an exhaust port (OH2) is opened in the second front duct (15). The first front duct (14) and the second front duct (15) may each protrude from the surface of the front plate (13).

[0095] The rear plate (17) may be provided with rear ducts (18, 19, see Fig. 11). The rear ducts (18, 19) include a first rear duct (18) and a second rear duct (19). An air supply port (IH1) is opened in the first rear duct (18), and a ventilation port (IH2) is opened in the second rear duct (19). The first rear duct (18) and the second rear duct (19) may each protrude from the surface of the rear plate (17).

[0096] The ventilation device may be provided with a flow path (20, 30, 40). The flow path (20, 30, 40) may form an internal space (S1) within the ventilation device. The flow path (20, 30, 40) may form a flow path through which air flows within the ventilation device. The flow path (20, 30, 40) may be made of a material with high insulation properties.

[0097] The above-described euro housing (20, 30, 40) may be composed of multiple parts. In the present embodiment, the euro housing (20, 30, 40) includes a middle housing portion (20), a first out housing portion (30), and a second out housing portion (40). The first out housing portion (30) and the second out housing portion (40) may be arranged on opposite sides with the middle housing portion (20) therebetween. The middle housing portion (20), the first out housing portion (30), and the second out housing portion (40) may each have an approximately square frame shape. As another example, the euro housing (20, 30, 40) may be composed of a single part, or may be formed integrally inside the ventilation casing (10) by filling the interior of the ventilation casing (10) with insulation material.

[0098] The first out housing part (30) is positioned closer to the first cover (80) than the second out housing part (40). Referring to Fig. 9, the first out housing part (30) becomes the lower frame, and the second out housing part (40) becomes the upper frame. Conversely, when the ventilation device is in the second installation state, the first out housing part (30) becomes the upper frame, and the second out housing part (40) becomes the lower frame.

[0099] Looking at the middle housing part (20), the front, rear, and both sides of the middle housing part (20) can be surrounded by the ventilation casing (10), respectively. The air treatment part (100) can be arranged at the center of the middle housing part (20). Although covered by the air treatment part (100), a middle penetration part (21, see FIG. 15), which is a space that penetrates vertically, is formed at the location where the air treatment part (100) is arranged. The middle penetration part (21) can be viewed as a part that connects the first opening part (RH1) and the second opening part (RH2). An outside air introduction fan (F1) and an inside air exhaust fan (F2), which will be described later, can be arranged in the middle housing part (20).

[0100] Referring to Fig. 10, a middle bypass passage (26) is formed in the middle housing portion (20). The middle bypass passage (26) is an air passage that allows air introduced into the ventilation device to be discharged directly to the outside without passing through the air treatment portion (100). The middle bypass passage (26) may be formed around the periphery of the air treatment portion (100) disposed at the center of the middle housing portion (20). The middle bypass passage (26) may form one bypass passage (26, 36) together with the out bypass passage (36) of the first out housing portion (30) to be described later. The structure of the middle housing portion (20) will be described again below.

[0101] A first out housing part (30) may be laminated on the middle housing part (20). A first out penetration part (31) is formed at the center of the first out housing part (30). The first out penetration part (31) may have an approximately rectangular shape. The first out penetration part (31) is formed by penetrating the first out housing part (30) in the vertical direction. The first out penetration part (31) is connected to an out plate penetration part (71) formed on an out plate (70) to be described later. In addition, the first out penetration part (31) is also connected to the middle penetration part (21) of the middle housing part (20). The first out penetration part (31) may form the first opening (RH1) together with the out plate penetration part (71). It can be seen that the above first out penetration portion (31) forms the internal space (S1) together with the second out penetration portion (41) described later.

[0102] An out bypass flow path (36) may be formed in the first out housing part (30). The out bypass flow path (36) may be formed to face the middle bypass flow path (26) of the middle housing part (20). Accordingly, when the first out housing part (30) is laminated on the middle housing part (20), the middle bypass flow path (26) and the out bypass flow path (36) may be combined with each other to form a single bypass flow path (26, 36). The detailed structure of the bypass flow path (26, 36) will be described again below.

[0103] The second out housing part (40) is laminated on the upper part of the first out housing part (30) with the middle housing part (20) therebetween. The second out housing part (40) can form an internal space (S1) between the middle housing part (20) and the first out housing part (30). A second out through-hole (41) is formed at the center of the second out housing part (40). The second out through-hole (41) can have an approximately rectangular shape. The second out through-hole (41) is formed by penetrating the second out housing part (40) in the vertical direction. The second out through-hole (41) can be the second opening (RH2). The second out through-hole (41) can be viewed as forming the internal space (S1) together with the middle through-hole (21) and the first out through-hole (31).

[0104] Referring to Fig. 10, an out fan mounting portion (44A, 44B) is provided on the bottom surface of the second out housing portion (40). The out fan mounting portion (44A, 44B) is a portion where an outside air intake fan (F1) and an inside air exhaust fan (F2) to be described below are mounted, and the out fan mounting portion (44A, 44B) may be formed by recessing a portion of the bottom surface of the second out housing portion (40). As another example, the out fan mounting portion (44A, 44B) may be provided on the middle housing portion (20), or the out fan mounting portions (44A, 44B) may be provided on the middle housing portion (20) and the second out housing portion (40), respectively. The above fan mounting part may include a first out fan mounting part (44A) in which the outside air introduction fan (F1) is accommodated, and a second out fan mounting part (44B) in which the inside exhaust fan (F2) is accommodated.

[0105] A mounting frame (50) may be provided between the middle penetration portion (21), the first out housing portion (30), and the second out housing portion (40). The mounting frame (50) is for fixing the air treatment unit (100) to the internal space (S1). The mounting frame (50) may be fixed to the middle housing portion (20). Alternatively, a portion of the mounting frame (50) may be disposed in the first out housing portion (30), and the remaining portion may be disposed in the second out housing portion (40). The mounting frame (50) may be fixed to the middle housing portion (20) so as to maintain the air treatment unit (100) in a state where it is disposed in the internal space (S1). The structure of the mounting frame (50) will be described again below.

[0106] A flat outplate (70) may be placed between the first out housing part (30) and the first cover (80). The outplate (70) may be placed between the first out housing part (30) and the second cover (90) to reinforce the strength of the first out housing part (30). The outplate (70) may also have an insulating function. In another example, the outplate (70) may be omitted. In another example, the outplate (70) may be viewed as a part of the first cover (80).

[0107] An outside air intake fan (F1) is housed inside the above-mentioned ventilation device. The outside air intake fan (F1) is rotated by a motor and can suck in outside air. To this end, the outside air intake fan (F1) may be positioned on the outside air intake path. In the present embodiment, the outside air intake fan (F1) is positioned adjacent to the air supply port (IH1) and can discharge air toward the air supply port (IH1).

[0108] An exhaust fan (F2) is housed inside the above-described ventilation device. The exhaust fan (F2) can exhaust air to the outside by being rotated by a motor. To this end, the exhaust fan (F2) can be placed on an exhaust path. In the present embodiment, the exhaust fan (F2) is placed adjacent to the exhaust port (OH2) and can discharge air toward the exhaust port (OH2). Consequently, the outside air introduction fan (F1) and the exhaust fan (F2) are placed diagonally spaced apart from each other with the air treatment unit (100) as the center.

[0109] An air treatment unit (100) is arranged inside the above ventilation device. The air treatment unit (100) may include a heat exchanger (110) and a filter (130, 140). The heat exchanger (110) may exchange heat between outside air drawn in through an outside air inlet passage and inside air discharged through an inside air discharge passage. The filter (130, 140) may filter the outside air drawn in and purify the air. The heat exchanger (110) and the filter (130, 140) may be arranged in close contact with each other.

[0110] The above heat exchanger (110) may be placed between the outside air introduction path and the inside air exhaust path. The heat exchanger (110) may exchange heat between the outside air being introduced and the inside air being discharged. The heat exchanger (110) may have a square column shape. In addition, the heat exchanger (110) may be placed so that its longitudinal cross-section is a diamond shape.

[0111] The above heat exchanger (110) may have a cross-flow plate type structure. That is, the heat exchanger (110) may separate the outdoor air flow path and the indoor air flow path by a partition plate made of a specially processed paper. Therefore, the outdoor air and the indoor air may pass through the heat exchanger (110) without mixing with each other. The heat exchanger (110) may allow the indoor air and the outdoor air, which usually have a temperature difference, to pass through different flow paths, and at the same time, the different flow paths may be formed to be laminated. In addition, the surface where the two flow paths are laminated may be formed of the specially processed paper. Therefore, the indoor air and the outdoor air may exchange heat by exchanging moisture that exchanges latent heat and heat that exchanges sensible heat by a high-efficiency heat exchange membrane. Here, the specially processed paper used in the heat exchanger (110) may have a characteristic that only heat and moisture pass through, but not air.

[0112] The above heat exchanger (110) can perform heat exchange between the outside air sucked into the inside of the ventilation casing (10) and the inside air. Accordingly, the outside air passing through the heat exchanger (110) can absorb the heat of the inside air while passing through the heat exchanger (110) and be supplied to the inside air. Accordingly, even if the ventilation device is operated in winter, the temperature inside the room may not drop rapidly.

[0113] The air treatment unit (100) may include a filter (130, 140). The filter (130, 140) may filter out foreign substances in the air flowing into the heat exchanger (110). The filter (130, 140) may include a pre-filter (140) and a HEPA filter (130). The outside air may be filtered while first passing through the pre-filter (140) and then filtered once more while passing through the HEPA filter (130). Referring to FIG. 17, in the present embodiment, the pre-filter (140) includes a first pre-filter (140A) arranged in front of the HEPA filter (130) and a second pre-filter (140B) arranged on the side of the heat exchanger (110). As another example, the filter (130, 140) may be composed of only one of a pre-filter (140) and a HEPA filter (130), or as another example, the filter (130, 140) may be viewed as a part of the heat exchanger (110).

[0114] At this time, the air treatment unit (100) is positioned at a location where the outside air introduction path and the inside air exhaust path intersect. Through this, the outside air and the inside air can exchange heat in the air treatment unit (100).

[0115] The air treatment unit (100) is formed with a first surface (111, 131) and a second surface (112, 132). The first surface (111, 131) and the second surface (112, 132) face opposite to each other. The first surface (111, 131) of the air treatment unit (100) can be exposed through the first opening (RH1). The second surface (112, 132) of the air treatment unit (100) can be exposed through the second opening (RH2). The first surface (111, 131) of the air treatment unit (100) can include the first surface (111) of the heat exchanger (110) and the first surface (131) of the filter (130, 140). The second surface (112, 132) of the air treatment unit (100) may include the second surface (112) of the heat exchanger (110) and the second surface (132) of the filter (130, 140).

[0116] When the ventilation casing (10) is arranged so that the first opening (RH1) faces downward, the air treatment unit (100) can be separated downward through the first opening (RH1). That is, when the ventilation device is in the first installation state, when the first cover (80) is opened, the first surface (111, 131) of the air treatment unit (100) is exposed through the first opening (RH1), and the air treatment unit (100) is separated downward through the first opening (RH1).

[0117] Conversely, when the ventilation casing (10) is arranged so that the second opening (RH2) faces downward, the air treatment unit (100) can be separated downward through the second opening (RH2). That is, when the ventilation device is in the second installation state, when the second cover (90) is opened, the second surface (112, 132) of the air treatment unit (100) is exposed through the second opening (RH2), and the air treatment unit (100) is separated downward through the second opening (RH2).

[0118] Referring to FIGS. 11 and 12, the first cover (80) and the second cover (90) are separated and the air treatment unit (100) is exposed, respectively. FIG. 11 shows a second installation state, in which the air treatment unit (100) is placed at the center of the middle housing unit (20). The air treatment unit (100) can be placed at the center of the middle housing unit (20) while being coupled to the mounting frame (50).

[0119] The above air treatment unit (100) can be maintained in a state of being mounted on the ventilation device by the support members (55, 58) and the mounting bar (65) described below. The support members (55, 58) can fix the filter (130, 140). The mounting bar (65) can fix the heat exchanger (110). Referring to FIG. 11, the support members (55, 58) are provided on the upper surface of the mounting frame (50), and the mounting bar (65) is arranged at a corner of the mounting frame (50). The support members (55, 58) and the mounting bar (65) will be described again below.

[0120] The middle bypass flow path (26) is formed around the periphery of the air treatment unit (100). In Fig. 11, the first out housing part (30) is omitted, so the middle bypass flow path (26) is expressed in an open state. However, when the first out housing part (30) is laminated, the out bypass flow path (36) can be connected to the middle bypass flow path (26) to form a closed bypass flow path (26, 36) that is a type of duct structure. As another example, the bypass flow path (26, 36) may be formed only in the middle housing part (20) or only in the first out housing part (30).

[0121] The above bypass flow path (26, 36) can be divided into two bypass flow paths extending in different directions. More precisely, the bypass flow path (26, 36) includes a first bypass flow path (26A) extending in a first direction orthogonal to the direction in which the ventilation port (IH2) is opened, and a second bypass flow path (26B) extending in a second direction identical to the direction in which the exhaust port (OH2) is opened. The first bypass flow path (26A) and the second bypass flow path (26B) are connected to each other. In Fig. 11, it can be seen that the middle bypass flow path (26) includes a first bypass flow path (26A) and a second bypass flow path (26B).

[0122] Here, the first bypass flow path (26A) may be formed between the ventilation port (IH2) and the air supply port (IH1). The second bypass flow path (26B) may be formed between the air supply port (IH1) and the exhaust port (OH2). This structure will be described again below. Drawing reference numeral 69 indicates an upper frame portion, which is arranged around the edge of the air treatment unit (100), among the mounting frames (50) for fixing the air treatment unit (100). Although not shown, a lower frame portion may be provided on the opposite side of the upper frame portion (69).

[0123] Referring to FIGS. 12 and 13, the filters (130, 140) of the air treatment unit (100) are arranged to face the external opening (OH1). Accordingly, the external air sucked into the external opening (OH1) first passes through the filters (130, 140). The air treatment unit (100) is arranged to be closer to the external opening (OH1) than to the exhaust opening (OH2) based on the center of the ventilation device. In addition, the air treatment unit (100) is arranged to be closer to the external opening (OH1) than to the ventilation opening (IH2) based on the center of the ventilation device. Accordingly, a bypass path (26, 36) can be secured in a relatively free space (the right space and the upper space based on FIG. 12).

[0124] Figures 13 and 14 schematically illustrate the flow of air through a ventilation device. Figure 13 shows the air flow when the ventilation device is in the first installation state, and Figure 14 shows the air flow when the ventilation device is in the second installation state. The arrows expressed in dotted lines represent the flow of air, and thus, the arrows can be viewed as representing paths. Arrow ① shows the path through which outside air is supplied along the outside air introduction path. Arrow ② shows the path through which inside air is discharged to the outside along the inside exhaust path. Arrow ③ shows the path through which inside air is discharged without heat exchange along the bypass path (26, 36).

[0125] First, looking at Fig. 13, as shown by arrow ①, outside air sucked into the ventilation device through the outside air port (OH1) passes through the filter (130, 140) and then passes through the heat exchanger (110). The outside air passing through the heat exchanger (110) exchanges heat with the air discharged from the indoors to the outdoors (arrow ②) and is then supplied to the indoors through the air supply unit. The outside air introduction path is formed in a diagonal direction.

[0126] Referring to arrow ② of Fig. 13, the internal air sucked into the ventilation device through the ventilation port (IH2) passes through the heat exchanger (110). The internal air passing through the heat exchanger (110) is heat-exchanged with the air supplied from the outside (arrow ①) and then discharged to the outside through the exhaust port (OH2). The internal air discharge path is formed in a diagonal direction. The internal air discharge path has a path that exchanges with the outdoor air introduction path through the heat exchanger (110).

[0127] Referring to arrow ③ of Fig. 13, when heat exchange is not required, the inside of ...

[0128] A damper (D) is arranged inside the above ventilation device to induce the air to be exhausted through the bypass passage (26, 36). In Fig. 13, the direction in which the damper (D) rotates is indicated by an arrow. In Fig. 13, the reference symbol D' represents the position when the damper (D) is rotated clockwise. When the damper (D) is in the D' state (dotted line), the inlet of the bypass passage (26, 36) is blocked, so the air passes through the air treatment unit (100). Conversely, when the damper (D) is rotated counterclockwise (solid line), the inlet of the air discharge passage toward the air treatment unit (100) is blocked, so the air is guided toward the bypass passage (26, 36).

[0129] Meanwhile, looking at Fig. 14, one can see a shape that is symmetrical to Fig. 13. The ventilation device of Fig. 14 can be seen as a state in which the ventilation casing (10) is rotated 180 degrees around an imaginary rotation axis that crosses the center of the air treatment unit (100) in the direction in which outside air is sucked in through the outside air introduction path (up and down based on the drawing). In this way, the first opening (RH1) and the second opening (RH2) face opposite directions.

[0130] As shown in arrow ① of Fig. 14, the outside air sucked into the outside device (OH1) passes through the filter (130, 140) and then passes through the heat exchanger (110). The outside air passing through the heat exchanger (110) is supplied to the inside through the air supply unit after heat exchange with the air discharged from the inside to the outside (arrow ②). The outside air introduction path is formed in a diagonal direction.

[0131] Referring to arrow ② of Fig. 14, the internal air sucked in through the ventilation opening (IH2) passes through the heat exchanger (110). The internal air passing through the heat exchanger (110) is heat-exchanged with the air supplied from the outside (arrow ①) and then discharged to the outside through the exhaust port (OH2). The internal air discharge path is formed in a diagonal direction. The internal air discharge path has a path that exchanges with the outdoor air introduction path through the heat exchanger (110).

[0132] Referring to arrow ③ of Fig. 14, when heat exchange is not required, the inside of the inside can be quickly discharged through the bypass path (26, 36). After being sucked into the inside of the ventilation device through the ventilation port (IH2), the inside can be discharged to the exhaust port (OH2) along the bypass path (26, 36). Since the bypass path (26, 36) is formed around the outside of the air treatment unit (100), the inside can be discharged directly to the exhaust port (OH2) without passing through the air treatment unit (100).

[0133] In this way, the ventilation device in the first installation state (Fig. 13) and the ventilation device in the second installation state (Fig. 14) can perform the same function. That is, when the ventilation device is in the first installation state and when it is in the second installation state, the flow of air through the outside air introduction path, the inside exhaust path, and the bypass path (26, 36) can be implemented in the same manner, respectively.

[0134] Figures 15 and 16 illustrate the structure of the middle housing portion (20) from different angles. A middle penetration portion (21), which is an empty space, is formed at the center of the middle housing portion (20). An air treatment portion (100) is arranged in the middle penetration portion (21). The dotted line in the center of Figure 15 represents the installation space (FS) in which the air treatment portion (100) is arranged.

[0135] A total of four air inlets and outlets are formed in the middle housing portion (20). More precisely, a first air hole (22A) and a second air hole (22B) are formed in the front of the middle housing portion (20). A third air hole (22C) and a fourth air hole (22D) are formed in the rear of the middle housing portion. The first air hole (22A) may be the external opening (OH1). The second air hole (22B) may be the exhaust opening (OH2). The third air hole (22C) may be the supply opening (IH1). The fourth air hole (22D) may be the ventilation opening (IH2).

[0136] The middle housing part (20) is provided with mounting parts (23A-23D). The mounting parts (23A-23D) are provided at the corners of the middle penetration part (21). The mounting parts (23A-23D) may be provided at each of the four corners of the mounting space (FS). The mounting parts (23A-23D) may be formed in a shape in which the outer edge portion of the middle penetration part (21) is sunken. The mounting parts (23A-23D) may wrap around the corners of the air treatment part (100) to assist in mounting the air treatment part (100). In the present embodiment, a total of four mounting parts support each of the four corners of the air treatment part (100).

[0137] The middle housing portion (20) may be provided with a middle fan mounting portion (24A, 24B). The middle fan mounting portion (24A, 24B) may create a space for storing fans together with the out fan mounting portion (44A, 44B) of the second out housing portion (40). More precisely, the middle fan mounting portion (24A, 24B) may be formed by a portion of the middle housing portion (20) penetrating therethrough. The middle fan mounting portion (24A, 24B) may include a first middle fan mounting portion (24A) in which the outside air intake fan (F1) is stored, and a second middle fan mounting portion (24B) in which the inside air exhaust fan (F2) is stored.

[0138] A middle bypass passage (26) is formed in the middle housing section (20). The middle bypass passage (26) is an air passage that allows air introduced into the ventilation device to be discharged directly to the outside without passing through the air treatment section (100). As described above, the middle bypass passage (26) may include a first bypass passage (26A) and a second bypass passage (26B).

[0139] In Fig. 15, the air flow along the middle bypass path (26) is represented by arrow ③. At this time, a part of arrow ③ is represented by a dotted line, which is to distinguish the part of the path that is partially covered between the first bypass path (26A) and the second bypass path (26B) based on Fig. 15. In Fig. 16, the part is depicted in an exposed state.

[0140] As shown in FIGS. 15 and 16, the middle bypass flow path (26) can be formed at different heights from the outside air intake fan (F1) and the inside exhaust fan (F2). Through this, the middle bypass flow path (26) does not interfere with the outside air intake fan (F1) and the inside exhaust fan (F2), and in the first installation state and the second installation state, the outside air intake fan (F1), the inside exhaust fan (F2), and the bypass flow path (26, 36) can each implement their original functions.

[0141] The above middle housing part (20) is provided with a damper installation part (27). The damper installation part (27) is a part where the damper (D) is mounted. A damper (D) and a motor (not shown) for driving the damper (D) may be arranged in the damper installation part (27). The damper (D) can rotate within a range of 90 degrees when installed in the damper installation part (27). The drawing symbol DS represents a blocking path covered by the damper (D). The blocking path (DS) can move according to the rotation of the damper (D). As another example, a ventilation device may be provided with a plurality of dampers (D) and the damper installation part (27).

[0142] Referring to Fig. 17, the mounting frame (50) and the air treatment unit (100) coupled to the mounting frame (50) are illustrated. The mounting frame (50) can surround the air treatment unit (100). Since the mounting frame (50) is fixed to the euro housing (20, 30, 40), if the air treatment unit (100) can be coupled to the mounting frame (50), the air treatment unit (100) can be fixed inside the ventilation device. A mounting space (FS, see Fig. 15) in which the air treatment unit (100) is placed can be formed at the center of the internal space (S1). A mounting frame (50) supporting the air treatment unit (100) can be fixed to the mounting space (FS).

[0143] The above mounting frame (50) is provided with fixing means for fixing the air treatment unit (100). The fixing means include a support portion (55, 58) and a mounting bar (65) to be described later. In addition, the fixing means may further include a coupling protrusion (133A) and a coupling groove (53A, 53B). At this time, the support portion (55, 58) may include a first support portion (55) and a second support portion (58). These fixing means allow the air treatment unit (100) to remain fixed to the mounting frame (50).

[0144] In Fig. 17, a first support part (55), a second support part (58), and a mounting bar (65) are illustrated as fixing means for fixing the air treatment unit (100) to the mounting frame (50). In the drawing, all of the fixing means show a state in which the air treatment unit (100) is hung and fixed. Based on Fig. 17, the first support part (55) and the second support part (58) are provided on the upper surface of the mounting frame (50), but alternatively, the first support part (55) and the second support part (58) may be provided on the lower surface of the mounting frame (50), or may be provided on the upper surface and the lower surface, respectively.

[0145] Fig. 18 illustrates a state in which the front frame portion (51) of the mounting frame (50) and the HEPA filter (130) are combined. For reference, the remaining portion of the mounting frame (50) that is combined with the heat exchanger (110) is omitted, and only the skeletal structure (131) of the HEPA filter (130) is illustrated with the internal filter device omitted. The front frame portion (51) can wrap around the side surface of the HEPA filter (130). The front frame portion (51) configured as a pair can wrap around both sides of the HEPA filter (130).

[0146] The first support part (55) and the second support part (58), which will be described again below, are arranged on the upper surface (52) of the front frame part (51). Although not shown, the first support part (55) and the second support part (58) may also be arranged on the lower surface of the front frame part (51). A handle mounting part (132A) on which a handle (136) is arranged may be formed on the second surface (132) of the HEPA filter (130) connected to the upper surface (52) of the front frame part (51). Unexplained reference numeral 137 indicates a grid rib for supporting the filtering device of the HEPA filter (130).

[0147] Referring to Fig. 19, the front frame part (51) and the HEPA filter (130) are shown separated from each other. A joining groove (53A, 53B) may be formed on the inner surface (53) of the front frame part (51). The joining groove (53A, 53B) may be formed by being sunken in the inner surface (53) of the front frame part (51). The joining groove (53A, 53B) may extend in a direction perpendicular to the detachment direction (upper and lower direction based on the drawing) of the HEPA filter (130).

[0148] The above-mentioned coupling grooves (53A, 53B) may include a first coupling groove (53A) and a second coupling groove (53B). The first coupling groove (53A) and the second coupling groove (53B) may be continuously connected to each other or may be spaced apart from each other. In the present embodiment, the first coupling groove (53A) and the second coupling groove (53B) have the same height in a direction perpendicular to the detachment direction (up-down direction based on the drawing) of the filter (130, 140), but are spaced apart from each other. The first coupling groove (53A) may be coupled with a coupling protrusion (133A) formed on a side surface of the HEPA filter (130). The second coupling groove (53B) may be coupled with a housing protrusion (not shown) provided on an exchanger housing (not shown) that surrounds the heat exchanger (110).

[0149] As shown in Fig. 19, the engaging protrusion (133A) protrudes from the side surface (133) of the HEPA filter (130). When the engaging protrusion (133A) is inserted into the first engaging groove (53A), the HEPA filter (130) can be supported by the front frame portion (51) in the detaching direction (up and down). In this way, the HEPA filter (130) can be prevented from falling when the first cover (80) or the second cover (90) is opened. The engaging protrusion (133A) can extend in a direction perpendicular to the detaching direction (up and down based on the drawing) of the HEPA filter (130). As another example, the engaging protrusion (133A) may be provided on the front frame portion (51), and the HEPA filter (130) may have a structure of engaging grooves (53A, 53B). As another example, the above-mentioned coupling protrusion (133A) may be provided in the pre-filter (140).

[0150] The mounting frame (50) may be provided with a support member (55, 58) that supports at least one of the first surface (111, 131) of the air treatment unit (100) or the second surface (111, 132) of the air treatment unit (100). The support member (55, 58) may support the surface of the air treatment unit (100) to prevent the air treatment unit (100) from being separated arbitrarily. The mounting frame (50) may be provided with a support member (55, 58). The support member (55, 58) may allow the air treatment unit (100) to be fixed to the mounting frame (50). In the present embodiment, as shown below, the support member (55, 58) supports the HEPA filter (130), the first pre-filter (140A), and the second pre-filter (140B). As another example, the support member (55, 58) may also support the heat exchanger (110). As another example, the support member (55, 58) may only support the heat exchanger (110).

[0151] Referring to Fig. 20, the operating state of the first support part (55) is expressed by enlarging part A of Fig. 17. Fig. 20 is a cross-sectional view showing a portion of the first pre-filter (140A). As can be seen therein, in the present embodiment, the support part (55, 58) includes a first support part (55) arranged on the front frame part (51), and a second support part (58) arranged on the surface of the frame part. The first support part (55) can simultaneously fix the HEPA filter (130) and the first pre-filter (140A), and the second support part (58) can fix the second pre-filter (140B).

[0152] The above support parts (55, 58) may include fixed bodies (55A, 58A) and support bodies (55B, 58B) that rotate relative to each other. The support bodies (55B, 58B) may catch the surface of the air treatment unit (100) to prevent the air treatment unit (100) from being arbitrarily separated from the ventilation device. In Fig. 20(A), the first fixed body (55A) constituting the first support part (55) is fixed to the surface of the front frame part (51). The first support body (55B) that rotates relative to the first fixed body (55A) may be connected to the first fixed body (55A) via a first support hinge (55C). The first support body (55B) may rotate in the direction of arrow ① with respect to the first support hinge (55C).

[0153] Referring to FIG. 20(B), the first support body (55B) can be rotated so that the state in which the first support body (55B) supports the surface of the HEPA filter (130) and the surface of the first pre-filter (140A) by hanging on them can be released. In this way, the HEPA filter (130) and the first pre-filter (140A) can move in a direction (upward based on the drawing) in which they are separated from the ventilation device.

[0154] A first counter support portion (134, 144) may be provided on the surface of the air treatment unit (100) that is in close contact with the first support body (55B). The first counter support portion (134, 144) may be magnetically coupled to the first support body (55B). For example, the first counter support portion (134, 144) may be made of a ferromagnetic material, and the first support body (55B) may be made of a permanent magnet. Conversely, the first counter support portion (134, 144) may be made of a permanent magnet, and the first support body (55B) may be made of a ferromagnetic material. Therefore, the user must first overcome the magnetic force to separate the first support body (55B) from the first counter support portion (134, 144). In this embodiment, the first supporting member (134, 144) includes a first HEPA filter supporting member (134) provided on the surface of the HEPA filter (130) and a first prefilter supporting member (144) provided on the surface of the first prefilter (140A).

[0155] FIG. 21(a) and FIG. 21(b) are enlarged views of part B of FIG. 17 to show the operating state of the first support part (55). As can be seen therein, the first support parts (55) can be arranged on both sides of the air treatment unit (100). One of the pair of first support parts (55) is arranged on the upper surface (or lower surface) of one side of the HEPA filter (130) and the first pre-filter (140A) (see part A of FIG. 17 and FIG. 20), and the other is arranged on the upper surface (or lower surface) of the opposite side of the HEPA filter (130) and the first pre-filter (140A) (see part B of FIG. 17 and FIG. 21).

[0156] The first support part (55) may be provided on the first surface (131) and the second surface (132) of the filter (130, 140), respectively. In this way, the first surface (131) of the HEPA filter (130) and the first surface (not indicated in the drawing) of the first pre-filter (140A) may be supported by the first support part (55), and at the same time, the second surface (132) of the HEPA filter (130) and the second surface (not indicated in the drawing) of the first pre-filter (140A) may also be supported by the first support part (55). For reference, FIG. 17, FIG. 20 and FIG. 21 illustrate the first support portion (55) supporting the second surface (132) of the HEPA filter (130) and the second surface of the first pre-filter (140A).

[0157] Referring to Fig. 22, the second support part (58) is illustrated supporting the second pre-filter (140B). Like the first support part (55), a portion of the second support part (58) may be fixed to the mounting frame (50). More precisely, the second fixed body (58A) of the second support part (58) is disposed on the upper portion of the mounting frame (50). In addition, the second support body (58B) of the second support part (58) may be rotated relative to the second fixed body (58A) and may be brought into close contact with or spaced apart from the surface of the second pre-filter (140B). The second support body (58B) may be rotated relative to the second fixed body (58A) about the second support hinge (58C). When the second supporting body (58B) is rotated in the direction of arrow ① of Fig. 22(A), the second supporting body (58B) moves away from the surface of the second pre-filter (140B) as shown in Fig. 22(B), and the second pre-filter (140B) becomes detachable. Reference numeral 144 of the drawing indicates a second relative supporting part (144) provided on the second surface (132) of the second pre-filter (140B). The second relative supporting part (144) and the second supporting body (58B) can also be magnetically coupled.

[0158] As another example, the first support body (55B) or the second support body (58B) may not rotate but may move linearly. The first support body (55B) or the second support body (58B) may support the filter (130, 140) during the linear movement. As another example, the first support body (55B) or the second support body (58B) may support the filter (130, 140) through a clasp structure. As another example, the first support body (55B) or the second support body (58B) may fix the filter (130, 140) through a press-fit structure.

[0159] FIG. 23(a) and FIG. 23(b) illustrate a state in which the mounting bar (65) constituting an example of a ventilation device according to the present invention is coupled to or separated from the fixed holder (118) of the air treatment unit (100) as the mounting bar (65) rotates. In this embodiment, the heat exchanger (110) of the air treatment unit (100) can be fixed to the mounting space (FS) by a locking device (60). The locking device (60) can include a mounting bar (65) and a rotation support member (61) that supports the mounting bar (65). When the mounting bar (65) interferes with the heat exchanger (110) by rotating, the heat exchanger (110) cannot be separated from the mounting space (FS).

[0160] Looking more closely, first, the heat exchanger (110) may be equipped with a fixed holder (118). The fixed holder (118) is coupled to the outer portion of the heat exchanger (110) and can be detached together with the heat exchanger (110). In the present embodiment, the fixed holder (118) is coupled to a corner portion of the heat exchanger (110). As shown in FIG. 23, the fixed holder (118) extends in the detachment direction (up and down based on the drawing) of the heat exchanger (110). Referring to FIG. 17, the fixed holder (118) is positioned inside the surface of the heat exchanger (110) and is not exposed.

[0161] Referring to Fig. 23(a), a fixing head (119) may be provided at the upper and lower portions of the fixing holder (118), respectively. The fixing head (119) has a relatively larger area than other portions of the fixing holder (118) and is a portion that is coupled to and separated from the mounting bar (65). A locking groove (119A) may be formed in the fixing head (119). The locking groove (119A) may be formed in a form in which a portion of the fixing head (119) is penetrated or sunken. The locking portion (66) of the mounting bar (65) may be inserted into the locking groove (119A). Fig. 23(a) illustrates a state in which the locking portion (66) is inserted into the locking groove (119A), and the heat exchanger (110) is in a locked state. The above locking groove (119A) may be added to the center of the above fixed holder (118) in addition to the above fixed head (119).

[0162] In Fig. 23(a), when the mounting bar (65) is rotated in the direction of arrow ①, the fixed holder (118) can be separated in the direction of arrow ②. That is, the fixed holder (118) and the heat exchanger (110) coupled with the fixed holder (118) become detachable. Referring to Fig. 23(b), the state in which the mounting bar (65) is rotated and the locking part (66) comes out of the locking groove (119A) is illustrated.

[0163] Looking at the structure of the above locking device (60), the locking device (60) includes the mounting bar (65) and a rotation support member (61) that rotatably supports the mounting bar (65). The rotation support member (61) can be fixed to the mounting space (FS). For example, the rotation support member (61) can be fixed to the middle housing.

[0164] The above-mentioned rotation support member (61) may be provided with a support arm (62). The support arm (62) may surround the outer circumference of the mounting bar (65) and support the mounting bar (65) so that it can rotate. The support arm (62) may be provided at each end of the rotation support member (61).

[0165] In this embodiment, the mounting bar (65) is configured in a cylindrical shape. The mounting bar (65) can be arranged to be long in the mounting / demounting direction (up / down direction based on the drawing) of the heat exchanger (110). A locking part (66) protrudes from the mounting bar (65). The locking part (66) can be fitted into the locking groove (119A) or removed from the locking groove (119A) when the mounting bar (65) is rotated. The locking part (66) can be provided at the upper and lower ends of the mounting bar (65), respectively. The locking part (66) can be additionally provided between the upper and lower ends of the mounting bar (65).

[0166] The above-described mounting bar (65) is provided with a lever (67). The lever (67) can protrude in a direction in which the air treatment unit (100) is separated from the mounting bar (65). That is, the lever (67) can protrude upward or downward based on the drawing. In the present embodiment, the levers (67) are provided at each of the two ends of the mounting bar (65) and can be exposed through the first opening (RH1) and the second opening (RH2), respectively. The operator can hold the lever (67) and rotate the lever (67) to rotate the entire mounting bar (65).

[0167] The above description is merely an illustrative illustration of the technical idea of ​​the present invention, and those skilled in the art will appreciate that various modifications and variations can be made without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate, rather than limit, the technical idea of ​​the present invention, and the scope of the technical idea of ​​the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within a scope equivalent thereto should be interpreted as being included in the scope of the rights of the present invention.

Claims

1. A ventilation casing in which an external air inlet and an internal air exhaust outlet are formed in the internal space; An air treatment unit positioned at a location where the above-mentioned external air introduction path and the above-mentioned internal air exhaust path intersect; A first opening formed in the ventilation casing and exposing a first surface of the air treatment unit; A second opening formed on the opposite side of the first opening in the ventilation casing and exposing a second side of the air treatment unit that is opposite to the first side; A first cover coupled to the above ventilation casing and covering the first opening; and A second cover coupled to the above ventilation casing and covering the second opening; When the first cover is opened, the air treatment unit is introduced into and out of the internal space through the first opening, A ventilation device in which the air treatment unit is introduced into and out of the internal space through the second opening when the second cover is opened.

2. In claim 1, the first opening and the second opening are formed on both sides of the internal space, respectively. A ventilation device in which the first opening and the second opening are connected to each other through the internal space.

3. A ventilation device according to claim 1, wherein the first opening and the second opening are positioned facing each other.

4. A ventilation device according to claim 1, wherein the first opening and the second opening have the same shape.

5. A ventilation device according to claim 1, wherein the first opening and the second opening are formed in a direction perpendicular to the direction in which the outside air introduction path and the inside air exhaust path extend.

6. In claim 1, the air treatment unit A heat exchanger arranged on a path where the above-mentioned external air introduction path and the above-mentioned internal air exhaust path interchange with each other; and A filter is disposed on the above-mentioned external air introduction path and purifies the external air; The first surface of the heat exchanger and the first surface of the filter are each exposed through the first opening, A ventilation device in which the second surface of the heat exchanger and the second surface of the filter are each exposed through the second opening.

7. In claim 1, when the ventilation casing is arranged so that the first opening faces downward, the air treatment unit is separated downward through the first opening, A ventilation device in which the air treatment unit is separated downward through the second opening when the ventilation casing is arranged so that the second opening faces downward.

8. A ventilation device according to claim 1, wherein a bypass path is formed in the internal space of the ventilation casing, each forming an independent path from the internal exhaust path and the external air introduction path.

9. In claim 8, the bypass path is a ventilation device formed around the periphery of the air treatment unit.

10. In claim 8, an outside air intake fan for sucking outside air and an inside air exhaust fan for exhausting inside air are arranged in the inside space. The above bypass euro is a ventilation device formed by having different heights from the above outdoor air intake fan and the above indoor air exhaust fan.

11. In claim 1, a first handle is provided on the first surface of the air treatment unit, A second handle is provided on the second surface of the above air treatment unit, A ventilation device in which the first handle and the second handle protrude in opposite directions.

12. In claim 1, the external air introduction path is An external opening formed on the front of the above ventilation casing and into which external air is introduced; and It includes an air supply port formed on the rear of the ventilation casing, connected to the external device, and discharging the external air introduced into the external device into the room; The above betting discharge euro is A ventilation hole formed on the rear of the above ventilation casing and discharging air; and An exhaust port formed on the front of the ventilation casing, connected to the ventilation port, and discharging the air introduced into the ventilation port to the outside; In the above internal space, a bypass path is formed connecting the ventilation port and the exhaust port, The above bypass path is a ventilation device having independent paths from the above outside air introduction path and the above inside air exhaust path.

13. In claim 12, the bypass path is A first bypass path extending in a first direction perpendicular to the direction in which the above ventilation opening is opened; and A ventilation device comprising a second bypass passage connected to the first bypass passage and extending in a second direction identical to the direction in which the exhaust port is opened.

14. In claim 13, the first bypass passage is formed between the ventilation port and the supply port, The above second bypass path is a ventilation device formed between the above supply port and the above exhaust port.

15. In claim 1, an outside air intake fan for sucking outside air is provided in the internal space, and the outside air intake fan is placed on the outside air intake path. A ventilation device in which an exhaust fan for exhausting air is provided in the above internal space, and the exhaust fan is placed on the exhaust path.

16. In claim 1, an installation space in which the air treatment unit is placed is formed at the center of the internal space, A ventilation device in which a mounting frame supporting the air treatment unit is fixed in the above mounting space.

17. In claim 16, the air treatment unit and the mounting frame are formed with corresponding coupling protrusions and coupling grooves, A ventilation device in which the above air treatment unit is placed in the above mounting space, and the above coupling protrusion is fitted into the above coupling groove.

18. In claim 16, the air treatment unit A heat exchanger arranged on a path where the above-mentioned external air introduction path and the above-mentioned internal air exhaust path interchange with each other; and A filter is disposed on the above-mentioned external air introduction path and purifies the external air; A ventilation device in which the joining projection or the joining groove is formed on the side of the heat exchanger and the side of the filter, and the joining groove or the joining projection is formed on the surface of the mounting frame.

19. A ventilation device according to claim 18, wherein the coupling projection and the coupling groove extend in a direction perpendicular to the direction in which the air treatment unit is attached and detached between the mounting parts.

20. A ventilation device according to claim 16, wherein the mounting frame is provided with a support member that supports at least one of the first side of the air treatment unit or the second side of the filter.

21. In claim 20, the support part A fixed body fixed to the above mounting frame; and A ventilation device including a support body that rotates relative to the fixed body or moves linearly relative to the fixed body and supports the first surface of the air treatment unit or the second surface of the air treatment unit.

22. In claim 20, a relative support portion is provided on the first surface of the air treatment unit or the second surface of the air treatment unit, and a support body that is in close contact with the relative support portion is provided on the support portion. A ventilation device in which the above-mentioned supporting member and the supporting body are magnetically coupled to each other.

23. In claim 1, an installation space in which the air treatment unit is placed is formed at the center of the internal space, The above mounting space is provided with a mounting bar that rotates around a rotating axis extending in the detachment direction of the air processing unit. A ventilation device in which the mounting bar and the air treatment unit interfere with each other or are free from interference when the mounting bar is rotated.

24. A ventilation device according to claim 23, wherein a locking part protrudes from the mounting bar, a locking groove into which the locking part is inserted is formed in the air treatment part, and when the mounting bar is rotated, the locking part is inserted into the locking groove.

25. A ventilation device according to claim 23, wherein the mounting bar is provided with a lever, and the lever protrudes in a direction in which the air treatment unit is separated from the mounting bar.

26. A ventilation casing in which an external air inlet and an internal air exhaust passage are formed in the internal space; An air treatment unit disposed inside the ventilation casing and positioned at a location where the outside air introduction path and the inside air exhaust path intersect; A first opening formed in the ventilation casing and exposing a first surface of the air treatment unit; A second opening formed on the opposite side of the first opening in the ventilation casing and exposing a second side of the air treatment unit that is opposite to the first side; A first cover coupled to the above ventilation casing and covering the first opening; and A second cover coupled to the above ventilation casing and covering the second opening; A ventilation device in which the first opening and the second opening face opposite directions when the ventilation casing is rotated 180 degrees around an imaginary rotation axis that crosses the center of the air treatment unit in the direction in which outside air is sucked in through the outside air introduction path.

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