KR20240084051A - Ventilation system - Google Patents

Abstract

A ventilation system according to an embodiment of the present invention includes: a ventilation device in which an external air inlet and an internal air outlet are formed on one side, an external air outlet and an internal air inlet are formed on the other side, and a heating element is disposed therein; an air supply duct extending from the outdoor air outlet; an exhaust duct connected to the vent inlet and guiding air inside the bathroom into the ventilation device; a diffuser connected to an end of the air supply duct and mounted on the ceiling of the bathroom to allow air supplied along the air supply duct to be supplied into the bathroom; and a sensor unit mounted on the bottom of the diffuser to detect occupants inside the bathroom.

Description

Ventilation system {Ventilation system}

The present invention relates to ventilation systems.

In general, a ventilation fan attached to the bathroom ceiling is widely used as a means for bathroom ventilation. In addition, a separate ventilation device for bathroom ventilation may be attached to the ceiling.

The prior art below relates to a bathroom ventilation device, which quickly discharges moist air inside the bathroom through an exhaust pipe connected to the outside and has a built-in heater to warm up the bathroom air. Additionally, it has one air inlet and two air outlets, and the two air outlets are selectively opened and closed depending on the heating mode and humid air discharge mode.

In the case of the bathroom ventilation device disclosed in the prior art, since there is no air inflow into the bathroom when bathroom air is discharged, negative pressure is formed in the bathroom, which has a disadvantage in that the ability to exhaust wet air is reduced when used for a long time.

In addition, there is a disadvantage in that dehumidification performance is poor because a separate dehumidification module is not provided.

In addition, since air discharge and air heating are performed separately in time, there is a disadvantage in that continuous air discharge is not possible when heating is needed.

Korean Patent Publication No. 2022-0096354 (July 7, 2022)

The present invention is proposed to improve the above problems.

The ventilation system according to an embodiment of the present invention for achieving the above object has an external air inlet and an internal air outlet formed on one side, an external air discharge port and an internal air inlet formed on the other side, and a heating element is disposed inside. ventilation device; an air supply duct extending from the outdoor air outlet; an exhaust duct connected to the vent inlet and guiding air inside the bathroom into the ventilation device; a diffuser connected to an end of the air supply duct and mounted on the ceiling of the bathroom to allow air supplied along the air supply duct to be supplied into the bathroom; and a sensor unit mounted on the bottom of the diffuser to detect occupants inside the bathroom.

The sensor unit is characterized in that it is provided to be lifted up and down.

The diffuser includes a diffuser case penetrating the ceiling of the bathroom; a diffuser disk that opens and closes an outlet defined at the bottom of the diffuser case; and a lifting module that moves the diffuser disk in an upward and downward direction, and the sensor unit is mounted on the diffuser disk.

The diffuser includes a moving case coupled to the upper surface of the diffuser disk; a motor supporter mounted on the top of the moving case; It further includes a lifting cover covering the top of the moving case.

The lifting module includes: a lifting motor accommodated inside the moving case and fixed to the motor supporter; a rotating plate connected to the motor shaft of the lifting motor and interposed between the lifting cover and the motor supporter; a lifting screw extending from the upper surface of the rotating plate through the lifting cover; A lifting nut screwed to the outer peripheral surface of the lifting screw; It includes a fixing arm that extends from the outer peripheral surface of the lifting nut and is fixed to the diffuser case.

The lifting module further includes a bearing interposed between the rotating plate and the lifting cover.

The sensor unit includes a human body detection sensor that detects the occupant, and a sensor case that accommodates the human body detection sensor, and the diffuser disk is characterized in that a sensor mounting hole in which the sensor case is mounted is formed.

The diffuser case includes a lowering part at one end connected to the air supply duct, and a diffusion part extending from the other end of the lowering part and increasing in diameter toward the lower side. Due to the shape of the diffusion part, the discharge port of the diffuser is located at the lower side. It is characterized by an increase in cross-sectional area.

The ventilation device further includes a main case accommodating the heating element, the outside air inlet and the inside air outlet are formed on one side of the main case, and the inside air inlet and the outside air outlet are formed on the other side of the main case. It is characterized by being formed in .

A bypass flow path is formed inside the main case, and the bypass flow path connects the bet inlet and the bet outlet, but extends to bypass the heating element.

The ventilation device includes a suction fan module mounted on the outdoor air outlet; An exhaust fan module mounted on the exhaust outlet; and an evaporator disposed between the heating element and the external air outlet.

According to the ventilation system according to the embodiment of the present invention configured as described above, the following effects are achieved.

First, it is effective in suppressing bacterial growth in the bathroom through dehumidification and ventilation in the bathroom.

Second, there is the advantage of being able to cool the bathroom in the summer and heat the bathroom in the winter.

Third, since it is possible to quickly remove bathroom contaminants through rapid exhaust, there is an advantage in preventing bathroom odors from penetrating into the living room.

Fourth, fresh outdoor air can be supplied to the bathroom, which has the advantage of improving the user's health and preventing breathing difficulties caused by moisture.

Fifth, it has the advantage of being equipped with a sensor that detects whether a user is present in the bathroom, allowing the humid air in the bathroom to be automatically discharged to the outside.

1 is a system diagram showing the configuration of a ventilation system according to an embodiment of the present invention.
Figure 2 is a bottom perspective view of a ventilation device constituting a ventilation system according to an embodiment of the present invention.
Figure 3 is an exploded perspective view of a ventilation device.
Figure 4 is a bottom view showing the internal configuration of the ventilation device.
Figure 5 is a cross-sectional perspective view of the ventilation device taken along line 5-5 in Figure 4;
Figure 6 is a bottom perspective view of the main case constituting the ventilation device.
Figure 7 is a bottom perspective view of the middle case constituting the main case of the ventilation device.
Figure 8 is a plan perspective view of the middle case.
Figure 9 is a bottom perspective view of the upper case constituting the main case of the ventilation device according to an embodiment of the present invention.
Figure 10 is a bottom view of the main case.
11 is a view showing the lower case separated from the bottom of the main case.
Figure 12 is a bottom perspective view of the lower case.
Figure 13 is a bottom perspective view of a diffuser constituting a ventilation system according to an embodiment of the present invention.
Figure 14 is a plan perspective view of the diffuser.
Figure 15 is an exploded perspective view of the diffuser.
Figure 16 is a longitudinal cross-sectional view of the diffuser taken along line 16-16 in Figure 14.
Figure 17 is a perspective view of a multi-damper module constituting a ventilation system according to an embodiment of the present invention.
Figure 18 is an exploded perspective view of the multi-damper module.
Figure 19 is a perspective view of a damper unit constituting the multi-damper module.
Figure 20 is a cross-sectional view of a multi-damper showing the open/closed state of the connection port according to the rotation amount of the damper unit.

Hereinafter, a ventilation system according to an embodiment of the present invention will be described in detail with reference to the drawings.

1 is a system diagram showing the configuration of a ventilation system according to an embodiment of the present invention.

Referring to FIG. 1, the ventilation system 1 according to an embodiment of the present invention includes a ventilation device 10, and an air supply duct 91 and an exhaust duct 92 connected to the ventilation device 10. .

A diffuser 60 is connected to the end of the air supply duct 91, and the diffuser 60 is mounted on the ceiling of the bathroom (H), so that the air flowing along the air supply duct 91 flows into the bathroom (H). supplied.

Additionally, a multi-damper module 70 may be installed at the end of the exhaust duct 92. One intake port and two exhaust ports are formed in the multi-damper module 70, and the end of the exhaust duct 92 is connected to one of the two exhaust ports.

Additionally, a ventilation duct 93 is connected to the suction port, and a ventilation fan 80 is connected to an end of the ventilation duct 93. The ventilation fan 80 includes a ventilation fan mounted inside the bathroom (H).

Additionally, a common exhaust duct 94 is connected to the other of the two exhaust ports, and an end of the common exhaust duct 994 is connected to a common exhaust pipe 95 provided outdoors. The common exhaust pipe 95 is an exhaust pipe disposed in a multi-family building, such as an apartment, and can be understood as a common pipe in which exhaust ducts extending from a multi-family building are connected.

Figure 2 is a bottom perspective view of a ventilation device constituting a ventilation system according to an embodiment of the present invention, Figure 3 is an exploded perspective view of the ventilation device, Figure 4 is a bottom view showing the internal configuration of the ventilation device, and Figure 5 is a drawing. This is a cross-sectional perspective view of the ventilation device cut along 5-5 in 4.

2 to 5, the ventilation device 10 constituting the ventilation system 1 according to an embodiment of the present invention is mainly installed on the ceiling, so that the user mainly recognizes the bottom of the ventilation device 10. do.

Also, as shown in FIG. 1, the user can open the cover provided on the bottom of the ventilation device 10 to separate or replace the air purification module.

In detail, the ventilation device 10 according to an embodiment of the present invention includes a housing 11 in the shape of a hexahedron with an open bottom, a shield cover 16 covering the open bottom of the housing 11, and , and includes a plurality of duct flanges respectively mounted on two opposing sides of the housing 11.

An outdoor air inlet 101 and an indoor air outlet 104 are formed at both ends of one side of the housing 11, respectively. In addition, an indoor air inlet 103 and an outdoor air outlet 102 are formed at both ends of the other side of the housing 11 facing one side.

In addition, the outside air inlet 101 and the inside air inlet 103 are formed at a position facing each other, and the inside air outlet 104 and the outside air discharge port 102 are formed at a position facing each other.

In addition, the outdoor air flowing into the outdoor air inlet 101 is discharged indoors through the outdoor air outlet 102 located diagonally, and the indoor air flowing into the indoor air inlet 103 is discharged through the indoor air outlet located diagonally. It is discharged outdoors through (104). This is because outdoor air and indoor air flow in directions that intersect each other when passing through an air purification module, which will be described later, among components accommodated inside the housing 11.

Meanwhile, the duct flange includes an outdoor air inlet flange 171 mounted on the outdoor air inlet 101, and an outdoor air discharge flange 172 mounted on the outdoor air outlet 102. ), and an indoor air inlet flange 173 mounted on the indoor air inlet 103, and an indoor air exhaust flange 174 mounted on the indoor air outlet 104. .

Optionally, a heating device 50 may be installed in the outdoor air outlet 102. When the heating device 50 is mounted on the outside air discharge port 102, the outside air discharge flange 172 may be mounted on the outlet of the heating device 50.

In addition, the ventilation device 10 further includes a case accommodated inside the housing 11, and a lower cover 15 provided between the case and the shield cover 16 to cover the bottom of the case. do. A passage hole 151 through which an air purification module, which will be described later, passes is formed in the lower cover 15.

The case includes a lower case 14, a middle case 13, and an upper case 12, and the combination of the upper case 12 and the middle case 13 can be defined as the main case 100. there is. The lower cover 15 is mounted on the bottom of the lower case 14 and is shielded by the shield cover 16. Additionally, the shield cover 16 is rotatably coupled to the housing 11 to selectively shield the shield cover 16.

The ventilation device 10 further includes an air purification module 40, a cooling module, and a fan module installed inside the case. The cooling module includes components constituting a refrigerant cycle using a refrigerant as a circulating fluid, and includes at least an evaporator 21 through which a low-temperature, low-pressure two-phase refrigerant flows. Additionally, the evaporator 21 may be located on the outlet side of the air purification module 40.

The fan module includes a suction fan module 19 that intakes outdoor air and discharges it indoors, and an exhaust fan module 20 that intakes indoor air and exhausts it outdoors. The fan module includes a fan and a motor that rotates the fan module.

The suction fan module 19 may be disposed at a point where the outside air outlet 102 is formed so that the outlet of the suction fan module 19 and the outside air outlet 102 are connected. In addition, the exhaust fan module 20 may be disposed at a point where the internal air discharge port 104 is formed, so that the discharge port of the exhaust fan module 20 and the internal air outlet 104 are connected.

The air purification module 40 includes a module frame 41 and a heating element 42 accommodated inside the module frame 41. Optionally, the air purification module 40 may further include at least one of a HEPA filter 43, a pre-filter 44, and an optical filter 45. The optical filter 45 refers to a filter that removes harmful bacteria, such as mites, from the outdoor air sucked into the air purification module 40 or the pre-filter 44 using ultraviolet rays emitted from a UV lamp.

The air purification module 40 includes an optical filter 45, a pre-filter 44, a HEPA filter 43, and a heating element 42 arranged in order from the side closest to the outdoor air inlet 101, The outdoor air flowing in through the inlet 101 sequentially passes through the optical filter 45, the pre-filter 44, the HEPA filter, and the heating element 42, and then is supplied indoors through the outdoor air outlet 102. Make it possible.

Optionally, the ventilation device 10 may further include an air cleaning module 30, wherein the air cleaning module 30 is located between the evaporator 21 and the air cleaning module 40. , or may be placed between the evaporator 21 and the suction fan module 19. That is, the air purification module 40, the air purification module 30, and the evaporator 21 may be placed on a flow path through which outdoor air flows, and the placement positions of these components are located in the case, especially the main case 100. ) can be appropriately selected depending on the structure.

The fan module may be a centrifugal fan that sucks air in the axial direction and discharges it in the radial direction, but is not necessarily limited thereto. When the fan module is a centrifugal fan, the outlet of the suction fan module 19 is directly connected to the outside air outlet 102. Accordingly, the central axis of the outside air discharge flange 172 passes through the center of the discharge port of the suction fan module 19. In another aspect, it may be explained that the central axis of the outdoor air discharge flange 172 (or the central axis of the outdoor air outlet) and the fan axis of the suction fan module 19 are orthogonal.

On the other hand, in order to compact the ventilation device 10 or to secure space inside the main case 100 when the specifications of the housing 11 are determined, the fan shaft of the exhaust fan module 20 is It may be arranged parallel to the central axis L1 of the discharge flange 174 (or the central axis of the inner discharge port). That is, the line L2 passing through the center of the discharge port of the exhaust fan module 20 and the central axis L1 of the air discharge flange 174 may be designed to be perpendicular. Additionally, an exhaust air flow transition space 106 is formed between the exhaust fan module 20 and the air outlet 104.

In other words, the mounting position of the exhaust fan module 20 is designed so that the central axis of the air outlet 104 and the rotation axis of the exhaust fan module 20 are parallel.

Meanwhile, inside the main case 100, an outdoor air passage through which outdoor air flows and an internal air passage through which indoor air flows are formed in a direction that intersects each other. Then, the air purification module 40 is placed at a point where the flows of indoor air and outdoor air intersect. And, among the air flow paths, a first damper unit 22 is installed on the air flow path connecting the air inlet 103 and the air purification module 40. The first damper unit 22 allows indoor air flowing into the ventilation inlet 103 to selectively flow to either the air purification module 40 or the bypass flow path (described later). The bypass flow path is formed between the middle case 13 and the lower case 14, and this will be described in more detail below.

In addition, a second damper unit 23 that switches the flow path is installed in the main case 100 so that the indoor air flowing into the inside air inlet 103 and flowing toward the bypass flow path flows into the outdoor air flow path where the evaporator 21 is installed. ) is installed inside. That is, the bypass flow path and the external air flow path can be selectively connected by the second damper unit 23. Specifically, in a situation where rapid cooling is required, the indoor air introduced into the inside air inlet 103 by the operation of the second damper unit 23 passes through the evaporator 21 and then through the outside air outlet 102. It can be discharged back into the room through .

Meanwhile, the ventilation device 10 further includes a control box 18 that controls the operation of various components accommodated inside the housing 11. The various components may include the fan modules 19 and 20, the damper units 22 and 23, the air cleaning module 30, and the light filter 45. Additionally, the control box 18 may be mounted on the side of the housing 11, specifically on the indoor side.

Figure 6 is a bottom perspective view of the main case constituting the ventilation device.

Referring to FIG. 6, the main case 100 can be understood as a combination of the upper case 12 and the lower case 13, as described above.

Inside the main case 100, an external air flow path and an internal air flow path are formed in an intersecting direction. An external air inlet 101 and an external air outlet 104 are formed on one side of the main case 110, and an internal air inlet 103 and an external air outlet 102 are formed on the other side. Part of the four air passage holes 101 to 104 are formed on the side of the upper case 12, and the remaining part is formed on the side of the lower case 13. And, when the lower case 13 and the upper case 12 are combined, a completely circular hole is formed.

Inside the main case 100, there is a supply air introducing area 1001, a supply air discharge area 1002, an exhaust air introducing area 1003, and an exhaust air introducing area 1003. an exhaust air exhausting area (1004), an air purification module mounting area (1005), a bypass guide area (1006), an exhaust air entrance area (1007), and an exhaust air entrance area (1007). A flow transition space 106 is respectively defined.

The exhaust inlet 103 is formed on one side of the main case 100 defining an edge of the exhaust inlet area 1007, and the exhaust inlet area 1007 corresponds to the opposite side of the exhaust inlet 103. A first damper hole 106 is formed on the side of. Then, the first damper unit 22 is mounted in the first damper hole 106.

In addition, one end of the bypass guide area 1006 is connected to the side of the exhaust inlet area 1007 where the first damper hole 106 is formed or the side orthogonal to the side where the internal air inlet 103 is formed. do.

Additionally, the air purification module mounting area 1005 is formed at a point where the air supply flow path and the exhaust flow path intersect. The air purification module mounting area 1005 is formed with first to fourth sides continuous, corresponding to the shape of the air purification module 40.

The supply air inlet area 1001 is defined between the outside air inlet 101 and the first side of the air purification module mounting area 1005.

The exhaust inlet area 1003 is defined between the exhaust inlet area 1007 and the second side of the air purification module mounting area 1005. Additionally, the exhaust inlet area 1003 and the exhaust inlet area 1007 selectively communicate by operating the first damper unit 22.

The bypass guide area 1006 connects the exhaust inlet area 1007 and the entrance of the bypass flow path, and the outlet of the bypass flow path is connected to the exhaust discharge area 1004. The first side and the second side are adjacent to each other.

The supply air discharge area 1002 is defined between the supply air outlet 102 and the third side of the air purification module mounting area 1005. The second damper hole 107 is formed at the boundary between the air supply discharge area 1002 and the bypass guide area 1006. By operating the second damper unit 23, the bypass guide area 1006 and the air supply discharge area 1002 selectively communicate. The third side is located opposite the first side.

Additionally, the exhaust discharge area 1004 extends from the fourth side of the air purification module mounting area 1005 to the exhaust flow diversion space 106. Additionally, an exhaust fan mounting hole 105 is formed at the boundary dividing the exhaust discharge area 1004 and the air purification module mounting area 1005, and the discharge port of the exhaust fan module 20 is formed through the exhaust fan mounting hole. Connected to (105).

The exhaust fan mounting hole 105 and the air outlet 104 are formed on vertical planes that intersect each other, so that the indoor air flowing along the exhaust discharge area 1004 changes its flow direction in the exhaust flow conversion space 106. After that, it is discharged through the bet outlet (104).

The exhaust discharge area 1004 and the supply air discharge area 1002 are partitioned by a flow separation wall to block mixing of the exhausted indoor air and the incoming outdoor air.

The exhaust fan module 20 is disposed in the exhaust discharge area 1004, and the suction fan module 19 is disposed in the supply air discharge area 1002.

Figure 7 is a bottom perspective view of the middle case constituting the main case of the ventilation device, and Figure 8 is a plan perspective view of the middle case.

Referring to Figures 7 and 8, the middle case 13 has a bottom surface 131 to which the upper surface of the lower case 14 is coupled, an upper surface 132 to which the bottom surface of the upper case 12 is coupled, It includes a side surface 133 connecting the upper surface 132 and the lower surface 131.

The side surface 133 includes a first side 133a, a second side 133b, a third side 133c, and a fourth side 133d. The first side (133a) and the third side (133c) face each other, and the second side (133b) and the fourth side (133d) face each other.

The outside air inlet groove 1331 and the inside air discharge groove 1334 are formed on the first surface 133a, and the outside air inlet groove 1333 and outside air discharge groove 1332 are formed on the third side 133c. .

The outside air inlet groove 1331 forms half of the outside air inlet 101, and the inside air discharge groove 1334 forms half of the inside air outlet 104. The internal air inlet groove 1333 forms half of the internal air inlet 103, and the external air discharge groove 1332 forms half of the external air outlet 102.

An upper bypass groove 1311 is formed at the edge of the bottom surface 131 of the middle case 13.

In detail, the entrance end (one end) of the upper bypass groove 1311, which forms a part of the bypass passage, is connected to the other end of the bypass guide area 1006. Indoor air flowing into the bypass guide area 1006 is guided to the upper bypass groove 1311 in ventilation mode. And, the outlet end (other end) of the upper bypass groove 1311 is connected to the exhaust discharge area 1004.

The upper bypass groove 1311 may be bent into an n-shape along the edge of the middle case 13 to surround the bottom edge of the air supply discharge area 1002.

From the edge of the bottom surface 131 of the middle case 13 corresponding to the bottom of the second surface 133c, the extension arm 135 has a predetermined width and extends a predetermined length toward the first surface 133a. It is extended. A flow guide wall 136 is formed at the end of the extension arm 135. The flow guide wall 136 extends a predetermined length from both ends of the extension arm 135 toward the second surface 133b and the fourth surface 133d, and extends from the upper surface 132 of the middle case 131. It extends to a certain height. The flow guide wall 136 may extend to the same height as the side 133.

The extension arm 135 separates the bottom surface of the bypass guide area 1006 from the bottom surface of the exhaust inlet area 1007. In another aspect, it can be explained that the bottom surface of the bypass guide area 1006 is reduced by the width of the extension arm 135.

An inner edge of the fourth surface (133d) corresponding to one side of the first damper hole 106, and one side of the flow guide wall 136 corresponding to the other side of the first damper hole 106. The first damper mounting portion 1312 is recessed. Then, both sides of the first damper unit 22 are fitted into the first damper mounting portion 1312.

In addition, the other side of the flow guide wall 136 corresponding to one side of the second damper hole 107, and the upper bypass groove 1311 corresponding to the other side of the second damper hole 107. A second damper mounting portion 1313 is recessed at the inlet end of . Then, both sides of the second damper unit 23 are fitted into the second damper mounting portion 1313.

The other end of the flow guide wall 136 contacts one of the four corners of the air purification module 40 and supports one corner of the air purification module 40.

Meanwhile, the lower flow separation wall 134 extends from the inner edge of the outlet end of the upper bypass groove 1311. The lower flow separation wall 134 forms a lower portion of the flow separation wall.

A pipe receiving portion 1341 is formed on the bottom of the lower flow separation wall 134 to be stepped upward. The engine 211 and the liquid pipe 212 extending from the evaporator 21 pass through the pipe receiving portion 1341. That is, the organ 211 and the liquid pipe 212 extend below the lower flow separation wall 134.

Additionally, a pipe guide ledge 137 protrudes from the inner surface of the first surface 133a. One side of the pipe guide ledge 137 supports the side of the air purification module 40, and the other side forms a portion of the edge of the exhaust discharge area 1004.

A liquid pipe receiving groove 1371 and an engine receiving groove 1372 are formed on the bottom of the pipe guide ledge 137, respectively. The liquid pipe 212 and the engine 211 passing through the pipe receiving portion 1341 of the lower flow separation wall 134 extend along the engine receiving groove 1372 and the liquid pipe receiving groove 1371, respectively, and the first It passes through face 133a.

In addition, an air purification module support protrusion 138 protrudes from the inner surface of the fourth surface 133d, and one side of the air purification module support protrusion 138 supports the side of the air purification module 40. , the other side forms an edge of the exhaust inlet area 1003.

One side of the air purification module support ledge 138 is formed to face one side of the pipe guide ledge 137.

Meanwhile, a suction fan receiving groove 1323 is recessed on one side of the upper surface 132 of the middle case 13. The suction fan receiving groove 1323 is formed in a corner area where the second surface 133b and the third surface 133c meet. The outside air discharge groove 1332 formed on the third surface 133c communicates with the suction fan receiving groove 1323.

In addition, the upper surface 132, which corresponds to the corner area where the first surface 133a and the second surface 133b meet, has an exhaust flow conversion surface 1322 defining the bottom of the exhaust flow conversion space 106. is formed Additionally, an exhaust fan mounting wall defining one side of the flow conversion space 106 is formed on the upper surface of the middle case 13, and an exhaust fan mounting groove 1321 is formed in the exhaust fan mounting wall. The exhaust discharge groove 1334 is formed on the first surface 133a. The line L2 passing through the center of the exhaust fan mounting groove 1321 and the line L1 passing through the center of the exhaust discharge groove 1334 are orthogonal to each other. That is, the indoor air flowing in through the exhaust fan mounting groove 1321 has its flow changed by 90 degrees and is discharged outdoors through the exhaust discharge groove 1334.

Figure 9 is a bottom perspective view of the upper case constituting the main case of the ventilation device according to an embodiment of the present invention, and Figure 10 is a bottom view of the main case.

Referring to FIG. 9, the upper case 12 is placed on the upper surface of the middle case 13 and covers the open areas formed inside the middle case 13. In addition, protruding walls corresponding to the top shape of the middle case 13 extend from the bottom of the upper case 12.

In detail, the upper case 12 has a bottom surface 121 in close contact with the top surface of the middle case 13, an upper surface 122 that is opposite to the bottom surface 121, and the bottom surface 121 and the upper surface 122. ) includes a side 123 connecting the

And, the side surface 123 includes a first side 123a, a second side 123b, a third side 123c, and a fourth side 123d. The first surface 123a is the same as the first surface 133a of the middle case 13, and the second surface 123a is the same as the second surface 133b of the middle case 13. It forms a side. And, the third surface (123c) forms the same surface as the third surface (133c) of the middle case (13), and the fourth surface (123d) forms the same surface as the fourth surface (133d) of the middle case (13). It forms the same plane as

An external air inflow groove 1231 and an internal air discharge groove 1234 are formed on the first surface 123a, respectively. The outside air inlet groove 1231 and the outside air inlet groove 1331 of the middle case 13 are combined to form a complete outside air inlet 101. The bet discharge groove 1234 and the bet discharge groove 1334 of the middle case 13 are combined to form a complete bet discharge port 104.

An internal air inflow groove 1233 and an external air discharge groove 1232 are formed on the third surface 123c, respectively. The bet inlet groove 1233 and the bet inlet groove 1333 of the middle case 13 are combined to form a complete bet inlet 103. The outside air discharge groove 1232 and the outside air discharge groove 1232 of the middle case 13 meet to form a complete outside air discharge port 102.

A first air purification module support protrusion 126 protrudes from the inner surface of the first surface 123a, and the first air purification module support protrusion 126 is connected to the piping guide protrusion 137 of the middle case 13. adheres closely to

The flow path switching space 106 is recessed in the bottom corner area of the upper case 12 where the exhaust discharge groove 1234 is formed. When the upper case 12 is coupled to the upper surface of the middle case 13, the exhaust flow diversion surface 1322 forms the bottom surface of the flow path diversion space 106.

In addition, an exhaust fan mounting wall 129 defining one side of the flow path switching space 106 is formed on the bottom of the upper case 12, and an exhaust fan mounting groove 1291 is formed in the exhaust fan mounting wall 129. ) is formed. Then, the exhaust fan mounting groove 1321 of the middle case 13 and the exhaust fan mounting groove 1291 are combined to form a complete exhaust fan mounting hole 105 (see FIG. 6).

An upper flow separation wall 124 extends diagonally from the bottom of the upper case 12 corresponding to the corner of the flow path conversion space 106, and the upper flow separation wall 124 is connected to the middle case 13. ) is in close contact with the lower flow separation wall 134, thereby completing a complete flow separation wall (see FIG. 6). The end of the flow separation wall functions as a module support wall supporting one corner of the air purification module 40.

A supply air inlet area 1001, a supply air discharge area 1002, an exhaust inlet area 1003, an exhaust discharge area 104, an air purification module mounting area 1005, and a bypass guide area formed in the middle case 13. (1006), and on the bottom of the upper case 12 directly above the exhaust inlet area 1007, a supply air inlet area 1001, a supply air discharge area 1002, and an exhaust inlet area 1003 of the same shape and size. ), an exhaust discharge area 104, an air purification module mounting area 1005, a bypass guide area 1006, and an exhaust inlet area 1007 are formed.

A flow guide wall 125 that is in close contact with the flow guide wall 136 of the middle case 13 protrudes from the bottom of the upper case 12. In addition, a first damper mounting part 1212 is recessed at a position corresponding to the first damper mounting part 1312 of the middle case 13, and a second damper mounting part 1313 is formed corresponding to the middle case 13. The second damper mounting portion 1213 is recessed at this position. That is, a first damper mounting portion 1212 is formed at one end of the flow guide wall 125, and a second damper mounting portion 1213 is formed at the other end.

Meanwhile, as shown in FIG. 4, the evaporator 21 is disposed between the air purification module 40 and the suction fan module 19, and the upper surface of the evaporator 21 is attached to the upper case 12. It is shielded, and a drain pan (24), which will be described later, is placed on the bottom.

Evaporator support ribs 127 each protrude from the bottom of the upper case 12 corresponding to two short side edges of the top edges of the evaporator 21.

Referring to FIG. 10, the two evaporator support ribs 127 protrude from an inlet edge point of the outdoor air discharge area 1002. And each of the evaporator support ribs 127 is bent multiple times to surround the edge of the upper surface of the evaporator 21.

Meanwhile, the evaporator 21 includes an evaporator body 211 consisting of an evaporation pipe and a heat exchange fin, and a support channel 212 mounted on a short side of the evaporator body 211 to support the evaporation pipe. .

The support channel 212 has a cross-sectional shape bent approximately in an n-shape. At the inner edge of the entrance end of the upper bypass groove 1311 is a channel support wall 139b supporting the support channel 212. This can be formed. That is, one of the two support channels 212 is supported by the channel support wall 139b. The channel support wall 139b is formed at a position adjacent to one of the two evaporator support ribs 127.

A channel support wall 139a may also be formed at a point adjacent to the other one of the two evaporator support ribs 127. Also, the other end of the two support channels 212 may be closely fixed to the channel support wall 139a.

Figure 11 is a view showing the lower case separated from the bottom of the main case, and Figure 12 is a perspective view of the bottom of the lower case.

11 and 12, the case of the ventilation device 10 according to an embodiment of the present invention includes a main case 100 and a lower case 14 coupled to the bottom of the main case 100. . In detail, the main case 100 is defined as a combination of the upper case 12 and the lower case 13, and the lower case 14 is coupled to the bottom of the middle case 13.

The lower case 14, like the upper case 12 or the middle case 13, includes a top surface 41, a bottom surface 142, and a side surface 143, and the side surface 143 is the first It includes a face 143a, a second face 143b, a third face 143c, and a fourth face 143d.

Each of the first to fourth surfaces 143a to 143d is the first to fourth surfaces 123a to 123d of the upper case 12 and the first to fourth surfaces of the middle case 13 ((133a) ~ 133d) and form the same plane as each.

A lower bypass groove 1411 is formed on the upper surface of the lower case 14, which is coupled to the upper bypass groove 1311 of the middle case 13, and the upper bypass groove 1311 and the lower bypass groove The grooves 1411 are combined to complete a complete bypass flow path.

An air purification module insertion hole 145 and a drain pan mounting hole 144 are formed in the lower case 14.

A module support wall 1415 extends from the upper surface 141 corresponding to one corner of the air purification module insertion hole 145, and the module support wall 1415 touches the bottom surface of the end of the flow separation wall. In detail, when the lower case 14 is coupled to the bottom of the middle case 13, the module support wall 1415 touches the lower surface of the end of the lower flow separation wall 134 of the middle case 13. . Here, the end of the module support wall 1415 touches the part excluding the pipe receiving part 1341, and does not interfere with the engine 211 and the liquid pipe 212 passing through the pipe receiving part 1341.

In addition, a pipe receiving groove 1414 is recessed at a certain point of the upper surface 141 corresponding to the directly below the pipe receiving portion 1341 to accommodate the liquid pipe 212 and the engine 211.

An engine receiving groove 1413 and a liquid pipe receiving groove 1412 are recessed at the top of the first surface 143a of the lower case 14, which corresponds to the first surface 133a of the middle case 13. , It is coupled to the liquid pipe receiving groove 1371 and the organ receiving groove 1372 of the middle case 13.

Meanwhile, a drain pipe receiving groove 1421 is recessed in the bottom of the lower case 14, one end of the drain pipe receiving groove 1421 is connected to the drain pan mounting hole 144, and the other end is connected to the drain pan mounting hole 144. It extends to the side 143 of the lower case 14. For example, the other end of the drain pipe receiving groove 1421 may extend to the first surface 143a.

Meanwhile, operation modes that can be performed by the ventilation device will be described.

First, the total heat exchange mode will be explained.

The total heat exchange mode is an operation mode in which indoor air and outdoor air exchange heat while passing through the air purification module 40 while the evaporator 21 is turned off.

In the total heat exchange mode, as is done in a conventional ventilation device equipped with a total heat exchanger, the heat contained in the indoor air that passes through the heat exchanger 42 and is discharged to the outdoors passes through the heat exchanger 42 and returns to the indoor air. It is transmitted to the outdoor air supplied to. In other words, waste heat discharged outdoors is recovered indoors. In seasons when the outdoor temperature is lower than the indoor temperature, the air flowing in from outdoors receives heat from the air discharged indoors and then is supplied indoors, so that fresh outside air is introduced indoors while minimizing changes in indoor temperature.

Additionally, in seasons when the outdoor temperature is higher than the indoor temperature, the incoming outdoor air releases heat into the outgoing indoor air and is supplied indoors at a lower temperature, thereby minimizing changes in indoor temperature and allowing fresh outdoor air to flow into the indoor room. .

Here, heat is transferred from the discharged indoor air to the incoming outdoor air (heat transfer), as well as heat transfer from the incoming outdoor air to the discharged indoor air (cold air transfer), resulting in waste heat recovery. define.

Second, the direct expansion total heat exchange mode will be explained.

The direct expansion type total heat exchange mode is an operation mode in which total heat exchange is performed with the evaporator 21 turned on, that is, with a low-temperature, low-pressure two-phase refrigerant flowing into the evaporator. Therefore, the direct expansion type heat exchange mode can be understood as a mode that implements cooling and heat ventilation through the inflow of outside air.

For example, in the case of direct expansion heat exchange mode in summer, outdoor air flowing in through the outside air inlet 101 passes through the air purification module 40 and heats up into indoor air discharged to the outdoors through the inside air inlet 103. is released and then passes through the evaporator 21. Accordingly, the amount of temperature reduction of external air supplied indoors increases, allowing the indoor temperature to be quickly lowered.

On the other hand, in winter, outdoor air absorbs heat from indoor air discharged while passing through the air purification module 40 and is then cooled while passing through the evaporator 21, so the amount of temperature reduction is relatively small compared to summer.

Third, the quick ventilation mode is explained.

The rapid ventilation mode refers to an operation mode in which outdoor air is introduced into the room and indoor air is discharged outdoors when the evaporator 21 is turned off, but the indoor air and outdoor air do not exchange heat with each other.

In detail, in the rapid ventilation mode, outdoor air flows into the outdoor air inlet 101, passes through the air purification module 40 and the evaporator 21, and is then supplied indoors through the outdoor air outlet 102. In addition, the indoor air is introduced through the ventilation inlet 103 and then discharged to the ventilation outlet 104 through the bypass flow path (B) without passing through the air purification module 40. Therefore, since the incoming outdoor air and the discharged indoor air do not exchange heat, the air supplied indoors maintains the same temperature as the outside air temperature.

For this air flow, the first damper unit 22 and the second damper unit 23 close the first damper hole 106 and the second damper hole 107, respectively. Then, the air flowing into the exhaust inlet area 1007 does not flow into the exhaust inlet area 1003, but flows along the bypass guide area 1006 and is guided to the bypass flow path B. In addition, the indoor air flowing along the bypass flow path (B) is collected in the exhaust discharge area 1004, and is guided to the flow path switching space 106 by the operation of the exhaust fan module 20, and finally It is discharged outdoors through the vent outlet 104.

In the rapid ventilation mode, the discharged indoor air is discharged directly outdoors without passing through the heating element 42, thereby minimizing contamination of the heating element 42. For example, if the rapid ventilation mode is selected for ventilation while grilling meat or fish in the kitchen, oil or bad odors are not adsorbed to the heating element 42, so the generation of bad odors can be prevented.

In addition, since the outdoor air is supplied indoors without absorbing heat from the indoor air, the relatively low temperature fresh air has the effect of quickly lowering the air in the kitchen heated by the gas stove, cooktop, oven, etc.

Additionally, since indoor air does not pass through the heating element, the lifespan of the heating element is extended.

Fourth, the direct expansion ventilation mode will be described.

The direct expansion ventilation mode refers to a rapid ventilation operation performed with the evaporator 21 turned on. Accordingly, the outdoor air that has passed through the air purification module 40 is supplied indoors at a reduced temperature while passing through the evaporator 21 without exchanging heat with the discharged outdoor air, and the indoor air does not pass through the heating element. It is discharged directly to the outdoors through the bypass flow path.

Since the direct expansion type heat exchange mode primarily recovers waste heat while passing through the heating element 42, it can be said that the cooling capacity of the ventilation device 10 is relatively large compared to the direct expansion type ventilation mode.

Fifth, the quick cooling mode will be described.

The rapid cooling mode is an operation mode in which indoor air passes only the evaporator 21 without passing through the air purification module 40, with the evaporator 21 turned on and the inflow of outdoor air blocked, and then discharged back into the room. means.

In the rapid cooling mode, the outdoor air inlet 102 is closed to block the inflow of outdoor air. Although not shown, a damper is mounted on the outside air inlet 102, so that the outside air inlet 102 can be selectively opened and closed depending on the operation mode. And, the exhaust fan module 20 remains turned off.

And, the first damper unit 22 closes the first damper hole 106. Also, the damping plate 222 of the second damper unit 23 opens the second damper hole 107 and rotates to a position that closes the inlet of the bypass passage B.

In this state, when the suction fan module 19 rotates, the indoor air flowing into the air inlet 103 is guided to the exhaust inlet area 1007, and is guided to the bypass in the exhaust inlet area 1007. Room air flowing into area 1006 is guided into the space between the air purification module 40 and the evaporator 21. Then, the indoor air passes through the evaporator 21 and is then supplied back into the room through the outdoor air outlet 102. Therefore, it can be understood that in the rapid cooling mode, the ventilation device 10 performs the same function as the indoor unit of an air conditioner.

Sixth, the ventilation/cooling simultaneous operation mode will be described.

The ventilation/cooling simultaneous operation mode is an operation mode in which the direct expansion type heat exchange mode and rapid cooling mode are performed simultaneously.

In the ventilation/cooling simultaneous operation mode, the damping plate 222 of the second damper unit 23 opens the second damper hole 107 and closes the inlet of the bypass passage B.

And, the damping plate 222 of the first damper unit 22 is rotated at an angle of less than 90 degrees, so that the indoor air in the exhaust inlet area 1007 flows through the first damper hole 106 and the bypass. It is divided into flow paths (B) to flow.

Then, the outdoor air flowing into the outdoor air inlet 101 absorbs waste heat from the indoor air guided to the heating element 42 and then passes through the evaporator 21. Then, the outdoor air that has absorbed the waste heat is guided to the evaporator 21.

In addition, the indoor air guided toward the bypass flow path (B) is guided toward the evaporator 21 by the damping plate 222 of the second damper unit 23, and is combined with the outdoor air that has absorbed waste heat. It then passes through the evaporator (21).

Outdoor air and indoor air passing through the evaporator 21 are supplied indoors through the outdoor air outlet 102.

The ventilation/cooling simultaneous operation mode can be useful in situations where both rapid cooling to quickly lower the indoor temperature and partial ventilation to reduce indoor air pollution are required. For example, when a large number of people enter a space, which not only increases the indoor temperature but also increases the carbon dioxide concentration, when the ventilation/cooling simultaneous operation mode is selected, fresh outdoor air is introduced into the room in a cooled state, and the indoor air While some of it is discharged outdoors, the indoor air can be cooled quickly.

Figure 13 is a bottom perspective view of a diffuser constituting a ventilation system according to an embodiment of the present invention, Figure 14 is a plan perspective view of the diffuser, Figure 15 is an exploded perspective view of the diffuser, and Figure 16 is a 16-16 of Figure 14. This is a longitudinal cross-sectional view of the diffuser cut along.

Referring to FIGS. 13 to 16, the diffuser 60 constituting the ventilation system 1 according to an embodiment of the present invention includes a diffuser case 61 and a lifting member that moves up and down inside the diffuser case 61. (67) and a lifting motor 64 that provides driving force to the lifting member 67.

In addition, the diffuser 60 includes a diffuser disk 62 that opens and closes the discharge port of the diffuser case 61, a sensor unit 63 mounted on the diffuser disk 62, and the diffuser disk 62. It includes a moving case 65 connected to the upper surface, a lifting cover 968 and a moving supporter 66 fixed to the top of the moving case 65.

In detail, the diffuser case 61 includes a cylindrical lowering portion 611 and a diffusion portion 612 extending radially from the lower end of the lowering portion 611. The lowering portion 611 is connected to the discharge end of the air supply duct 91 and penetrates the ceiling of the bathroom (H). And, the diffusion part 612 is exposed inside the bathroom (H). The diffusion portion 612 may have a diameter that increases toward the bottom.

The diffuser disk 62 is located inside the diffusion portion 612, and is raised or lowered in the vertical direction by the lifting member 67. When the diffuser disk 62 descends, the air discharge area formed at the bottom of the diffuser case 61 increases, and when the diffuser disk 62 rises, the air discharge area decreases. The diffuser disk 62 may rise until it contacts the bottom surface of the diffusion portion 612.

A sensor mounting hole 621 is formed in the center of the diffuser disk 62, and the sensor unit 63 is mounted in the sensor mounting hole 621.

The sensor unit 63 includes a sensor case 632 inserted into the sensor mounting hole 621 and a human body detection sensor 631 mounted inside the sensor case 632. The human body detection sensor 631 may be a PIR (Passive Infra-Red) sensor, and is installed to face the floor of the bathroom (H).

The moving case 65 is sized to accommodate the sensor unit 63 and is fixed to the upper surface of the diffuser disk 62.

In detail, the moving case 62 has a cylindrical shape with a predetermined diameter, and a seating end 651 on which the motor supporter 66 is seated is formed on the inner surface of the upper end. Additionally, the lifting cover 68 is coupled to the upper end of the moving case 62, and a space is formed between the lifting cover 68 and the moving case 65. And, an opening 661 is formed in the center of the motor supporter 66.

The lifting member 67 includes a rotating plate 671 placed between the lifting cover 68 and the motor supporter 66, and a bearing 674 disposed between the contact surface of the rotating plate 671 and the lifting cover 68. ) and a lifting screw 672 extending from the center of the upper surface of the rotating plate 671, a lifting nut 675 screwed to the outer peripheral surface of the lifting screw 672, and extending from the outer peripheral surface of the lifting nut 675 It includes a plurality of fixed arms 673.

The plurality of fixing arms 673 are fixed to the inner peripheral surface of the lowering portion 611.

The lifting motor 64 is fixed to the center of the bottom of the motor supporter 66, and the motor shaft 641 passes through the opening 661 of the motor supporter 66 and is connected to the bottom of the rotating plate 671. do. Therefore, as the lifting motor 64 drives, the lifting screw 672 rotates, and when the lifting screw 672 rotates, the rotating plate 672 is screwed together with the fixed lifting nut 675. ) rises or falls.

In summary, when the lifting motor 64 is driven, the rotating plate 671 and the lifting screw 672, which are connected to the motor shaft 641 as one body, rise or fall while rotating. And, the diffuser disk 62, the moving case 65, the motor supporter 66, and the lifting cover 68 rise or fall without rotating.

In detail, the rotating plate 671 rotates on the bottom of the lifting cover 68, and no frictional force is generated between the lifting cover 68 and the rotating plate 671 by the bearing 674.

In addition, when an occupant is detected by the sensor unit 63, the diffuser disk 62 descends according to operating conditions, and outdoor air or indoor air passing through the ventilation device 10 flows into the bathroom H. supplied. Here, depending on the operation mode of the ventilation device 10, the outdoor air supplied to the bathroom H passes through air that has exchanged heat with indoor air, air that has not exchanged heat with indoor air, and the evaporator 21. It can be either cold, dry air. And, the indoor air supplied to the bathroom (H) is low-temperature dry air that has passed through the evaporator (21).

Additionally, when the heater 50 installed inside the ventilation device 10 operates, warm outdoor air heated to a predetermined temperature may be supplied to the bathroom H through the air supply duct 91.

Figure 17 is a perspective view of a multi-damper module constituting a ventilation system according to an embodiment of the present invention, Figure 18 is an exploded perspective view of the multi-damper module, and Figure 19 is a perspective view of a damper unit constituting the multi-damper module.

17 to 19, the multi-damper module 70 constituting the ventilation system 1 according to an embodiment of the present invention includes a damper housing 71 and a damper housing 71 mounted inside the damper housing 71. A damper unit 76, a damper motor 74 that is placed on the outside of the damper housing 71 and rotates the damper unit 76, and a damper motor 74 that covers the damper motor 74 and is coupled to the damper housing 71. Includes motor case (75).

In detail, the damper housing 71 includes a lower housing 72 and an upper housing 73, and the lower housing 72 and the upper housing 73 may be symmetrical with respect to the horizontal plane.

In addition, the damper housing 71 includes a damper accommodating portion 711 that accommodates the damper unit 76, a first connection port 712 formed on one side of the damper accommodating portion 711, and the It includes a second connection port 713 formed on another side of the damper accommodating portion 711, and a third connection port 713 formed on a further side of the damper accommodating portion 711.

The damper receiving portion 711 may have a circular cross-section and an elliptical cross-section.

The second connection port 713 and the third connection port 713 may be formed in positions facing each other, and a line passing through the center of the first connection port 712 and the second connection port 713 and the line passing through the center of the third connection port 714 may be perpendicular to each other. That is, the angle formed by the first connection port 712 and the second connection port 713 and the angle formed by the first connection port 712 and the third connection port 714 may be 90 degrees.

In addition, the outlet end of the ventilation duct 93 is connected to the first connection port 712, the inlet end of the common exhaust duct 94 is connected to the second connection port 713, and the third The outlet end of the exhaust duct 92 may be connected to the connection port 714.

Due to this structure, when the ventilation fan 80 operates, wet air inside the bathroom (H) flows into the damper receiving part 711 through the ventilation duct 93. In addition, the wet air flowing into the damper receiving portion 711 flows into one of the common exhaust duct 94 and the exhaust duct 92 or flows divided into both sides depending on the operation of the damper unit 76. .

Meanwhile, the damper unit 76 accommodated inside the damper accommodating portion 711 includes a rotation shaft 761 connected to the motor shaft 741 of the damper motor 74 and extending from the rotation shaft 761. A first extension end 763 and a second extension end 764, a first damper 765 formed at an end of the first extension end 763, and a first damper 765 formed at an end of the second extension end 764. It includes a second damper 766.

The motor shaft 741 may penetrate the upper surface of the damper receiving portion 711 and be inserted into the motor shaft groove 762 recessed in the upper surface of the rotation shaft 761.

The angle formed by the first extension end 763 and the second extension end 764 may be 90 degrees.

Each of the first and second dampers 765 and 766 forms a convexly rounded surface with a predetermined curvature, and the rounded surface shields one of the first to third connection ports 712 to 714. .

The curvature of the rounded surface of the first and second dampers 765 and 766 is designed to be the same as the curvature of the inner peripheral surface of the damper receiving portion 711, so that the convexly rounded surface of the first and second dampers 765 and 766 The entire body can always be maintained in close contact with the inner peripheral surface of the damper receiving portion 711. Additionally, the dampers 765 and 766 can completely shield the openings of the connection ports 712 to 714.

The upper end of the rotating shaft 761 may be designed to contact the inner upper surface of the damper accommodating part 711, and the lower end of the rotating shaft 761 may be designed to contact the inner lower surface of the damper accommodating part 711.

Figure 20 is a cross-sectional view of a multi-damper showing the open/closed state of the connection port depending on the rotation amount of the damper unit.

As shown in (a) of FIG. 20, in the default state, the first and second dampers 765 and 766 shield the first and second connection ports 712 and 713, respectively. In this state, since the ventilation fan 80 does not operate, air inside the bathroom does not flow into the exhaust duct 92. And, in this state, the ventilation device 10 may not operate, or only the rapid cooling mode may be performed. In other words, it can be understood that at least the exhaust fan module 20 of the ventilation device 10 does not operate in this state.

Figure 20(b) shows the damper unit 76 rotated counterclockwise by a first angle θ1 in the drawing. The first angle θ1 is 90 degrees.

When the damper unit 76 is rotated 90 degrees from its basic state, the first connection port 712 and the third connection port 714 are opened, and the second connection port 713 is closed.

When the ventilator 80 operates in this state, all wet air discharged from the bathroom is guided to the exhaust duct 92 and flows into the ventilation device 10. And, depending on the operation mode of the ventilation device 10, the bathroom air introduced into the ventilation device 10 is discharged outdoors after passing through the heating element 40, or is discharged outdoors through the bypass flow path. Alternatively, when the ventilation device 10 is operating in a rapid cooling mode, the wet air guided to the exhaust duct 92 passes through the evaporator 30 and is then discharged back into the room.

Figure 20(c) shows the damper unit 76 rotated counterclockwise by a second angle θ2 from its basic state. The second angle θ2 is 135 degrees.

When the damper unit 76 rotates by 135 degrees from its basic state, all of the first to third connection ports 712 to 714 are opened. As a result, the wet air in the bathroom (H) discharged through the ventilation duct 93 is divided into the exhaust duct 92 and the common exhaust duct 94 and flows. The wet air flowing through the exhaust duct 92 is discharged outdoors or resupplied indoors, as already explained in the description of drawing (b).

Humid air flowing into the common exhaust duct 94 is discharged to the outdoors through the common exhaust pipe 95.

Figure 20(d) shows the damper unit 76 rotated counterclockwise by a third angle θ3 from its basic state. The third angle θ is 180 degrees.

When the damper unit 76 is rotated 180 degrees from its basic state, the first connection port 712 and the second connection port 713 are opened, and the third connection port 714 is closed. As a result, the wet air in the bathroom discharged through the ventilation duct 93 is guided to the common exhaust pipe 95 along the common exhaust duct 94 and is discharged outdoors.

The position of the damper unit 76 is appropriately selected depending on whether an occupant is detected by the sensor unit 63 and the operation mode of the ventilation device 10, so that the exhaust duct 92 and the common exhaust It is controlled to flow to one or both sides of the duct 94. As a result, the functions of dehumidifying, cooling, and heating the air inside the bathroom can be performed quickly and effectively.

Claims (11)

A ventilation device in which an external air inlet and an internal air outlet are formed on one side, an external air outlet and an internal air inlet are formed on the other side, and a heating element is disposed therein;
an air supply duct extending from the outdoor air outlet;
an exhaust duct connected to the vent inlet and guiding air inside the bathroom into the ventilation device;
a diffuser connected to an end of the air supply duct and mounted on the ceiling of the bathroom to allow air supplied along the air supply duct to be supplied into the bathroom; and
A ventilation system including a sensor unit mounted on the bottom of the diffuser to detect occupants inside the bathroom. According to claim 1,
A ventilation system, characterized in that the sensor unit is provided to be lifted up and down. According to claim 2,
The diffuser,
A diffuser case penetrating the ceiling of the bathroom;
a diffuser disk that opens and closes an outlet defined at the bottom of the diffuser case; and
It includes an elevating module that moves the diffuser disk in an upward and downward direction,
A ventilation system, characterized in that the sensor unit is mounted on the diffuser disk. According to claim 3,
The diffuser,
A moving case coupled to the upper surface of the diffuser disk;
a motor supporter mounted on the top of the moving case;
A ventilation system further comprising a lifting cover covering the top of the moving case. According to claim 4,
The lifting module is,
a lifting motor accommodated inside the moving case and fixed to the motor supporter;
a rotating plate connected to the motor shaft of the lifting motor and interposed between the lifting cover and the motor supporter;
a lifting screw extending from the upper surface of the rotating plate through the lifting cover;
A lifting nut screwed to the outer peripheral surface of the lifting screw;
A ventilation system including a fixing arm that extends from the outer peripheral surface of the lifting nut and is fixed to the diffuser case. According to claim 5,
The lifting module is,
A ventilation system further comprising a bearing interposed between the rotating plate and the lifting cover. According to claim 3,
The sensor unit is,
A human body detection sensor that detects the occupant,
Includes a sensor case accommodating the human body detection sensor,
A ventilation system, characterized in that a sensor mounting hole on which the sensor case is mounted is formed in the diffuser disk. According to claim 3,
The diffuser case is,
A lower end connected to the air supply duct,
It extends from the other end of the lower portion and includes a diffusion portion whose diameter increases toward the bottom,
A ventilation system, wherein the cross-sectional area of the discharge port of the diffuser increases downward due to the shape of the diffusion portion. The method according to any one of claims 1 to 8,
The ventilation device is,
Further comprising a main case accommodating the heating element,
The outside air inlet and the inside air outlet are formed on one side of the main case,
A ventilation system, wherein the internal air inlet and the external air outlet are formed on the other side of the main case. According to clause 9,
A bypass flow path is formed inside the main case,
The bypass flow path connects the inlet and outlet of the inlet, and extends to bypass the heating element. According to claim 10,
The ventilation device is,
a suction fan module mounted on the outdoor air outlet;
An exhaust fan module mounted on the exhaust outlet; and
A ventilation system further comprising an evaporator disposed between the heating element and the outdoor air outlet.

Images