KR102691437B1 - Ventilation apparatus - Google Patents

Abstract

A ventilation device according to an embodiment of the present invention includes a housing including a front cover, a rear cover, and a side cover connecting edges of the front cover and the rear cover; a separation wall separating the internal space of the housing into an upper ventilation unit and a lower air conditioning unit; Ventilation components installed in the ventilation unit; and an air conditioning component installed in the air conditioning unit, wherein the front cover has an interior inlet through which indoor air flows in and an air outlet through which indoor air and/or outdoor air are discharged, and at the rear cover, outdoor air. It is a ventilation device that has an inlet for outdoor air and an internal outlet for indoor air to be discharged, and includes a supply mullion installed at a point close to one end of the interior of the air conditioning unit; and a discharge side mullion erected at a point close to the other side end inside the air conditioning unit, wherein the air conditioning component is disposed between the supply side mullion and the discharge side mullion, and the supply side mullion and the supply side mullion. An external air supply flow path is defined between one side of the side cover close to the air, and an internal air discharge flow path is defined between the discharge side mullion and the other side of the side cover close to the discharge side mullion. .

Description

Ventilation apparatus {Ventilation apparatus}

The present invention relates to ventilation devices.

A ventilation device is a device for discharging indoor air to the outside and supplying fresh outdoor air to the inside. Its main component is a heating element that allows only heat exchange without mixing the indoor air that is discharged with the outdoor air that is introduced. .

Recently, complex ventilation devices that can additionally perform a cooling function in addition to a ventilation function through total heat exchange have emerged.

In the prior art below, a complex ventilation device is disclosed in which a refrigeration system that forms a cooling cycle using a refrigerant is mounted inside the ventilator.

The ventilation device disclosed in the above prior art is configured for cooling and heating, that is, a compressor, a condenser (second heat exchanger), and an evaporator (first heat exchanger) are installed inside the ventilation device, and the discharged indoor air is used as a heating element. A damper (defined as a second damper) is provided for rapid cooling that flows back into the room after passing through the evaporator.

The conventional composite ventilation device having this structure suffers from the following disadvantages.

First, there is a disadvantage in that the lifespan of the heating element is shortened because a passage through which polluted indoor air can be discharged directly to the outdoors without passing through the heating element is provided inside the ventilation device. For example, when cooking fish or meat, indoor air containing odors and smoke passes through the heating element, and highly viscous animal fat is adsorbed to the surface of the heating element. This adsorption phenomenon increases the flow resistance of exhausted indoor air and acts as a factor that reduces heat exchange efficiency with incoming outdoor air.

Although the indoor air filter is mounted on the side of the total heat exchanger in communication with the indoor air exhaust chamber to purify the discharged indoor air, it has the disadvantage of making it impossible for indoor air to circulate without passing through the total heat exchanger. In this case, the lifespan of the total heat exchanger can be extended, but there is a disadvantage that the indoor air filter must be replaced periodically.

Second, since the indoor air discharged outdoors must pass through the heating element, in summer situations, when the indoor temperature is higher than the outdoor temperature, the outdoor air passing through the heating element absorbs heat from the discharged indoor air. As a result, there is a disadvantage in that fresh air with a relatively low temperature cannot be supplied indoors, so users cannot feel the ventilation effect in the summer.

Third, in the case of the prior art, the incoming outdoor air passes through the heating element and is then purified by passing through various filters, so various contaminants, including dust, accumulate inside the heating element, and harmful bacteria form on the surface of the heating element. Problems with attachment and proliferation may occur.

Korean Patent No. 10-2118791 (May 28, 2020)

The present invention is proposed to improve the above problems.

A ventilation device according to an embodiment of the present invention for achieving the above object includes a housing including a front cover, a rear cover, and a side cover connecting edges of the front cover and the rear cover; a separation wall separating the internal space of the housing into an upper ventilation unit and a lower air conditioning unit; Ventilation components installed in the ventilation unit; and an air conditioning component installed in the air conditioning unit, wherein the front cover has an interior inlet through which indoor air flows in and an air outlet through which indoor air and/or outdoor air are discharged, and at the rear cover, outdoor air. It is a ventilation device that has an inlet for outdoor air and an internal outlet for indoor air to be discharged, and includes a supply mullion installed at a point close to one end of the interior of the air conditioning unit; and a discharge side mullion erected at a point close to the other side end inside the air conditioning unit, wherein the air conditioning component is disposed between the supply side mullion and the discharge side mullion, and the supply side mullion and the supply side mullion. An external air supply flow path is defined between one side of the side cover close to the air, and an internal air discharge flow path is defined between the discharge side mullion and the other side of the side cover close to the discharge side mullion. .

The ventilation device according to the present invention further includes a partition plate that connects the supply side mullion and the discharge side mullion to divide the internal space of the air conditioning unit into an upper space and a lower space, and the air conditioning component is located in the upper space. It includes an evaporation fan module placed in the lower space, and an evaporator placed in the lower space.

The air outlet is formed at a point divided into two areas by the supply side mullion, so that a part of the air outlet communicates with the external air supply passage, and another part of the air outlet communicates with the lower space. It is characterized by

An evaporator communication hole is formed in the partition plate, and the discharge port of the evaporation fan module is connected to the communication hole.

The ventilation part includes a heating element in the form of a hexahedron disposed in the front-back direction inside the ventilation unit so that its upper and lower surfaces are in close contact with the front cover and the rear cover, respectively; a plurality of partition walls extending from four side edges of the heating element and dividing the internal space of the ventilation unit into four spaces; an exhaust fan module communicating with the exhaust outlet; It includes a suction fan module communicating with the outdoor air inlet.

The four spaces include an outdoor air inflow space communicating with the outdoor air inlet; an outdoor air discharge space defined opposite the outdoor air inlet space with respect to the heating element and communicating with the outdoor air inlet; a bet discharge space communicating with the bet discharge port; And it is defined on the opposite side of the inside exhaust space with respect to the heating element, and includes an inside inside space communicating with the inside out discharge space, wherein the exhaust fan module is placed in the inside out discharge space, and has a discharge port at the inside inside discharge space. It is connected to the outlet, and the suction fan module is placed in the outdoor air discharge space.

An outdoor air communication hole is formed at a point of the dividing wall defining the upper surface of the outdoor air supply passage, and the outlet of the suction fan module is connected to the outdoor air communication hole.

A communication hole is formed at a point of the separating wall defining the upper surface of the bet discharge passage, and the bet inlet space and the bet discharge passage are in communication by the bet communication hole.

It further includes an exhaust damper provided on the discharge side mullion, and by opening and closing the exhaust damper, the indoor air sucked through the interior air inlet flows to one of the interior air inlet space and the upper space. .

The ventilation device according to the present invention further includes a supply damper provided on the supply side mullion, and by opening and closing the supply damper, outdoor air passing through the outdoor air communication hole is directed to any one of the outdoor air supply passage and the upper space. It is characterized by flowing to one side.

The ventilation device according to the present invention is provided in the ventilation unit, and further includes a bypass duct in which a bypass passage is formed to bypass the heat transfer element and connect the inside of the inside of the inside to the inside of the inside of the inside.

The inlet of the bypass flow path communicates with the inlet space, the outlet of the bypass flow path communicates with the outlet space, and the ventilation device further includes a bypass damper mounted at the inlet of the bypass flow path. do.

By opening and closing the bypass damper, the indoor air passing through the ventilation discharge passage flows to one of the bypass passage and the ventilation inlet space.

The ventilation device according to the present invention further includes a HEPA filter mounted on one side of the heating element, one side of which communicates with the outside air inflow space, and a pre-filter mounted on the other side of the HEPA filter.

The heating element, the HEPA filter, and the pre-filter are provided in the form of an air purification module by a frame, and the front cover has a mounting hole for inserting and withdrawing the air purifying module.

The ventilation device according to the embodiment of the present invention configured as described above has the following effects.

First, since a bypass flow path is provided inside the ventilation device to allow indoor air to be discharged directly to the outdoors without passing through the heating element, there is an advantage in that contamination of the heating element is minimized and the lifespan of the heating element is extended. Furthermore, there is an advantage that there is no need to separately install an indoor air filter to purify indoor air before passing through the heating element.

Second, since indoor air can be discharged through the bypass passage, incoming outdoor air can be supplied indoors without recovering waste heat contained in the indoor air, which has the advantage of improving ventilation performance and user satisfaction.

Third, since the air purification means including the heating elements and filters are provided in the form of a single module, there is an advantage in that they are easy to install and repair.

Fourth, since a hole is formed on the front of the housing for the entry and exit of the air purification module, replacement and repair of the air purification module are very convenient.

Fifth, since a double duct structure is installed at the outdoor air outlet through which outdoor air is discharged, the outdoor air that flows into the indoor from the outdoor and the indoor air that passes through the air conditioning unit and is supplied indoors are supplied indoors without mixing with each other. Therefore, there is an advantage of being able to supply air in different states to multiple indoor spaces.

Sixth, by providing an internal bypass passage and multiple dampers, various types of operation modes can be set, so there is an advantage in that the user can select an appropriate operation mode according to need.

1 is a front perspective view of a ventilation device according to an embodiment of the present invention installed indoors.
Figure 2 is a rear perspective view of the ventilation device.
Figure 3 is an exploded perspective view of the ventilation device.
Figure 4 is a diagram showing the internal configuration of a ventilation device according to an embodiment of the present invention.
Figure 5 is a bottom perspective view of the ventilation unit.
Figure 6 is a plan perspective view of a bypass duct constituting a ventilation device according to an embodiment of the present invention.
Figure 7 is a bottom perspective view of the bypass duct.
Figure 8 is a diagram showing the air flow inside the ventilation device in electric heat ventilation mode.
9 is a diagram showing the air flow inside the ventilation device in rapid ventilation mode.
Figure 10 is a diagram showing the air flow inside the ventilation device in rapid cooling mode.
Figure 11 is a diagram showing the air flow inside the ventilation device in simultaneous electric ventilation/outside air cooling mode.
Figure 12 is a diagram showing the air flow inside the ventilation device in simultaneous rapid ventilation/outside air cooling mode.
13 is a diagram showing the air flow inside the ventilation device in rapid ventilation/mixed cooling mode.
14 is a diagram showing the air flow inside the ventilation device in electrothermal ventilation/mixed cooling mode.
Figure 15 is a diagram showing the air flow inside the ventilation device in the electrothermal ventilation/rapid cooling mixed mode.
Figure 16 is a diagram showing the air flow inside the ventilation device in rapid ventilation/rapid cooling mixed mode.
Figure 17 is a perspective view of a ventilation device provided with an outdoor air discharge duct according to another embodiment of the present invention.
Figure 18 is a cross-sectional view of the ventilation device taken along line 18-18 in Figure 17;
Figure 19 is an exploded perspective view of the outdoor air discharge duct.
Figure 20 is a cross-sectional view of the outdoor air discharge duct.

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

Figure 1 is a front perspective view of a ventilation device according to an embodiment of the present invention installed indoors, Figure 2 is a rear perspective view of the ventilation device, and Figure 3 is an exploded perspective view of the ventilation device.

Referring to Figures 1 to 3, the ventilation device 10 according to an embodiment of the present invention includes a housing 11 equipped with ventilation components and air conditioning components inside, and mounted on the front and back of the housing 11. It includes a duct flange 20 and an air duct 30 coupled to the duct flange 20.

In detail, the housing 11 includes a front cover 111, a rear cover 113 located behind the front cover 111, and a structure connecting the edges of the front cover 111 and the rear cover 113. Includes side cover 112. The side cover 112 forms both sides, an upper surface, and a lower surface of the housing 11.

The internal space of the housing 11 is divided into an upper ventilation part 11a and a lower air conditioning part 11b by a separation wall 12. Various parts necessary to perform a ventilation function are disposed in the ventilation unit 11a, and various components necessary to perform a cooling or heating function are disposed in the air conditioning unit 11b.

Outdoor air flowing into the housing 11 first passes through the ventilation unit 11a and then is guided to the air conditioning unit 11b before being supplied indoors. In addition, the indoor air flowing into the housing 11 passes only the air conditioning unit 11b and is discharged back into the room, or passes through the ventilation unit 11a and then is discharged outdoors, depending on the operation mode.

An external air outlet 1111 and an internal air inlet 1112 are formed in the front cover 111, respectively. The outside air outlet 1111 and the inside air inlet 1112 are each formed at a point close to the bottom of the front cover 11 in a structure in which the air conditioning unit 11b is formed on the lower side of the ventilation unit 11a. You can.

Here, the outdoor air outlet 1111 mainly functions as an outlet through which outdoor air is discharged into the room, but it also functions as an outlet through which indoor air is discharged depending on the operation mode, so it can be broadly defined as an air outlet.

An external air inlet 1131 and an internal air outlet 1132 are formed in the rear cover 113, respectively. The outside air inlet 1131 and the inside air outlet 1132 are each formed at a point close to the top of the rear cover 113 in a structure in which the ventilation unit 11a is formed on the upper side of the air conditioning unit 11b. You can.

The external air inlet 1131 and the external air outlet 1111, the internal air inlet 1112 and the internal air outlet 1132 may be formed in diagonally opposite positions of the housing 11.

Meanwhile, the duct flange 20 includes an outdoor air inlet flange 21 coupled to the outdoor air inlet 1131, an outdoor air discharge flange 22 coupled to the outdoor air outlet 1111, and an internal air inlet 1112. It includes a bet inlet flange 23 coupled to, and a bet discharge flange 24 coupled to the bet outlet 1132.

In addition, the air duct 30 includes an outside air inlet duct 31 coupled to the outside air inlet flange 21, an outside air discharge duct 32 connected to the outside air discharge flange 22, and an inside air inlet flange. It includes a bet inlet duct 33 coupled to (23), and a bet discharge duct 34 coupled to the bet discharge flange 24.

The outside air discharge duct 32 and the inside air inlet duct 33 are manufactured in the same shape, and can be freely coupled to the outside air discharge flange 22 and the inside air inlet flange 23 without being limited to the mounting position.

As shown in FIG. 1, when the ventilation device 10 is attached to the veranda or the upper side of the wall of the machine room, an outdoor unit 80 is provided with components other than air conditioning-related parts installed in the air conditioning unit 11b. Can be placed below the ventilation device 10. As a result, the space of the veranda or machine room where the ventilation device 10 is installed can be efficiently utilized. In addition, since the length of the pipes constituting the refrigerant cycle for performing the air conditioning function can be minimized, heat loss through the pipes can be minimized.

In addition, since the outlets of the outside air discharge duct 32 and the inside air inflow duct 33 are located close to the ceiling, a branch branching from the outside air discharge duct 32 and the inside air inflow duct 33 into a plurality of indoor spaces There is an advantage in that ducts can be installed along the ceiling.

Hereinafter, the components provided in the ventilation unit 11a and the components provided in the air conditioning unit 11b will be described in detail with reference to the drawings.

Figure 4 is a diagram showing the internal configuration of a ventilation device according to an embodiment of the present invention, and Figure 5 is a bottom perspective view of the ventilation unit.

4 and 5, the housing 11 of the ventilation device 10 according to an embodiment of the present invention is divided into a ventilation unit 11a and an air conditioning unit (11a) by the separation wall 12, as described above. It is divided into 11b).

An air purification module 40 is disposed inside the ventilation unit 11a. In detail, the air purification module 40 includes a heating element 41 that allows heat exchange between indoor air discharged outdoors and outdoor air introduced indoors without mixing.

The heating element 41 has a square or diamond cross-sectional shape and forms a hexahedron in which indoor air flow channels and outdoor air flow channels are alternately stacked.

In this embodiment, among the six surfaces of the heating element 41, two square or diamond-shaped surfaces are defined as the front and rear, and four surfaces connecting the front and rear are defined as side surfaces.

The front of the heating element 41 is in close contact with the back of the front cover 111, and the back is in close contact with the front of the rear cover 113. Additionally, the four corners of the heating element 41 are installed to face the top and left and right sides of the side cover 112 and the separation wall 12.

In addition, partition walls 16 extend from each of the four corners of the heating element 41, and the four partition walls 16 face the upper surface and left and right sides of the side cover 112 and the separation wall 12. Each is extended. Specifically, two of the four partition walls 16 contact the upper surface and one side of the side cover 112. And, the remaining two partition walls contact the top and side surfaces of the bypass duct, which will be described later.

By providing the four partition walls 16, the internal space of the ventilation unit 11a is further divided into four spaces. The four spaces include an outside air inlet space (S1), an outside air discharge space (S2), an inside air inlet space (S3), and an inside air discharge space (S4).

The air purification module 40 includes at least one of a HEPA filter 42 and a pre-filter 43. The HEPA filter 42 and the pre-filter 43 are mounted on one of the four sides of the heating element 42. Specifically, the HEPA filter 42 and the pre-filter 43 are mounted on the side that communicates with the outside air inflow space S1 among the four sides of the heat conduction element 41. In addition, one side of the HEPA filter 42 is mounted on the side of the heating element 41, and the pre-filter 43 is mounted on the other side of the HEPA filter 42.

The heating element 41, the HEPA filter 42, and the pre-filter 43 are surrounded by one frame and can be mounted in the ventilation unit 11a in a module form. Also, within the frame, the heating element 41, the HEPA filter 42, and the pre-filter 43 are provided so as to be independently slidingly withdrawn.

Additionally, a mounting hole 1113 for insertion and separation of the air purification module 40 may be formed in the front cover 111. Additionally, the mounting hole 113 may be shielded by a separate cover or door (not shown), and the cover or door may be rotatably coupled to the front cover 111.

Meanwhile, the outside air inlet 1131 formed in the rear cover 113 is formed in a portion that defines the rear of the outside air inlet space (S1), and the inside air outlet 1132 is at the back of the outside air discharge space (S4). It is formed in the part that defines .

Accordingly, the outdoor air flowing into the outdoor air inlet 1131 passes through the air purification module 40 and is then guided to the outdoor air discharge space S2. And, the outdoor air flowing into the outdoor air inlet 1131 sequentially passes through the pre-filter 43, the HEPA filter 42, and the heating element 41.

An external air communication hole 121 and an internal air communication hole 122 are formed in the separation wall 12, respectively, and the external air communication hole 121 and the internal air communication hole 122 are located on both sides of the separation wall 12. Each is formed at a point adjacent to the end.

An exhaust fan module 62 is disposed in the interior exhaust space S4, and an outlet of the exhaust fan module 62 is connected to the interior exhaust outlet 1132. In addition, a suction fan module 61 is disposed in the outside air discharge space (S2), and the discharge port of the suction fan module 61 is connected to the outside air communication hole 121.

In addition, the bypass duct 50 is installed in the ventilation unit 11a, and is connected to the internal air discharge space (S4) across the internal air inflow space (S3) and the external air discharge space (S2). That is, the bypass duct 50 extends from the inside air inlet space (S3) to the side end of the outside air discharge space (S2) and then extends upward along the side of the side cover 112 to form the outside air discharge space. It consists of a structure that communicates with (S4). The structure of the bypass duct 50 will be described in more detail below with reference to the drawings.

Meanwhile, some of the parts constituting the refrigerant cycle are accommodated in the air conditioning unit 11b. For example, the evaporator 64 and the evaporation fan module 63 can be accommodated, and the components of the refrigerant cycle excluding the evaporator 64 and the evaporation fan module 63, that is, the compressor, condenser, four-way valve, expansion valve, etc. It can be accommodated inside the outdoor unit 80. In addition, by controlling the opening degrees of the four sides, the evaporator 64 can operate as a condenser to enable heating operation.

A supply-side mullion 14 is built on one of the two side edges of the air conditioning unit 11a, specifically on the edge where the outside air communication hole 121 is formed, and the inside air communication hole 122 is formed. A discharge mullion (15) is built on the formed edge side. Accordingly, the outside air communication hole 121 is located at the top of the outside air supply passage 114 defined between one side of the site cover 112 and the supply side mullion 14. In addition, the betting communication hole 122 is located at the top of the betting discharge passage 115 defined between the other side of the side cover 112 and the discharge side mullion 15.

Each of the supply-side mullion 14 and the discharge-side mullion 15 may be defined as a wall erected vertically to connect the lower surface of the separation wall 12 and the side cover 112. In particular, the lower portion of the discharge-side mullion 15 may be bent toward the supply-side mullion 14 and then extended downward, as shown.

The space formed between the supply-side mullion 14 and the discharge-side mullion 15 is formed by a partition plate 13 extending horizontally from the supply-side mullion 14 to the discharge-side mullion 15. It may be divided into an upper space 116 and a lower space 117.

Here, the air passage from the upper space 116 to the lower space 117 after passing through the partition plate 13 is a passage through which outdoor air or indoor air cooled by the evaporator 64 flows, and is used for air conditioning. It can be defined as Euro. Of course, when the refrigerant cycle operates as a heat pump cycle and the evaporator 64 functions as a condenser, the air flowing along the air conditioning passage is heated air. Accordingly, the flow path connecting the upper space 116 and the lower space 117 may be defined as an air conditioning flow path.

The evaporation fan module 63 can be mounted on the upper surface of the partition plate 13, and an evaporator communication hole 131 is formed in the partition plate 13. The discharge port of the evaporation fan module 63 is connected to the evaporator communication hole 131.

As shown in FIG. 8, the outside air outlet 1111 of the front cover 111 is formed across the outside air supply passage 114 and the lower space 117. Accordingly, both the air flowing along the outdoor air supply passage 114 and the air sent to the lower space 117 are discharged into the room through the outdoor air outlet 1111.

On the other hand, the bet inlet 1112 of the front cover 111 is designed to communicate only with the bet discharge passage 115. Accordingly, the indoor air flowing in through the ventilation inlet 1112 does not flow into the lower space 117, but only rises along the ventilation discharge passage 115.

A bypass damper 71 is mounted at the inlet of the bypass duct 50, a supply damper 72 is mounted on the supply side mullion 14, and an exhaust damper 73 is installed on the discharge side mullion 15. ) is installed.

The bypass damper 71 selectively opens and closes the inlet of the bypass duct 50. Specifically, when the bypass damper 71 closes the inlet of the bypass duct 50, the wage discharge flow path 115 and the wage inflow space (S3) communicate through the wage communication hole 122. . On the other hand, when the bypass damper 71 opens the inlet of the bypass duct 50, the inside of the inside of the inside of the inside of the inside of the inside of the inside of the inside of the inside of the inside of the inside of the inside of the inside of the inside of the bypass duct 115 and the side discharge passage 115 through the inside communication hole 122. The formed bypass flow path (described later) communicates.

In addition, when the supply damper 72 is opened, the external air supply passage 114 and the upper space 116 communicate, and when the exhaust damper 73 is opened, the upper space 116 and the internal air discharge passage ( 115) communicates.

Figure 6 is a plan perspective view of a bypass duct constituting a ventilation device according to an embodiment of the present invention, and Figure 7 is a bottom perspective view of the bypass duct.

6 and 7, the ventilation device 10 according to an embodiment of the present invention is equipped with a bypass duct 50, and the bypass duct 50 is connected to the bottom of the ventilation unit 11a. It extends along the side portion.

In detail, the bypass duct 50 includes a transverse portion 51 seated on the separation wall 12, a side portion 53 bent at a side end of the transverse portion 51 and extending upward, and the It consists of an upper surface portion 54 extending rearward from the top of the side portion 53.

The front of the bypass duct 50 is open, and the front end may be in close contact with the back of the front cover 111. Alternatively, the front of the bypass duct 50 may be closed by a front plate, and the front plate may be in close contact with the back of the front cover 111. The back of the bypass duct 50 is in close contact with the front of the rear cover 113.

The side of the cross section 51 is opened to define an inlet 501, and the side of the cross section 51 where the inlet 501 is defined is spaced at a predetermined distance from the side cover 112 of the housing 11. are separated.

The bypass damper 71 is mounted on the inlet 501, and the bypass damper 71 includes a damper frame 712 mounted on the side edge of the cross section 51, and the damper frame 712. ) includes a damper 711 rotatably connected to the upper end of the damper 711, and a damper motor 713 that rotates the damper 711. Like the bypass damper 71, the supply damper 72 and the exhaust damper 73 are composed of a damper frame, a damper, and a damper motor.

The damper 711 has a width corresponding to the height of the cross section 51 and a length corresponding to the front-to-back width of the cross section 51. The side of the transverse portion 51 and the side cover 112 are spaced apart by a distance corresponding to the width of the damper 711. The space formed between the side of the transverse portion 51 and the side cover 112 is a passage through which indoor air sucked through the bet inlet 1112 is guided to the bet inlet space (S3), and the bet is discharged. It can be defined as a passage. Then, when the damper 711 is in a vertical state, the inlet 501 is closed, and when the damper 711 is rotated to a horizontal state to open the inlet 501, the internal air discharge passage is closed.

A suction fan module receiving groove 504 is formed in a portion of the bypass duct 50 to accommodate the suction fan module 61, and the suction fan module receiving groove 504 is formed in a portion of the bypass duct 50. It is formed by cutting a portion of the transverse portion 51 and a portion of the side portion 53. And, the cut surfaces of the transverse portion 51 and the side portion 53 that define the edge of the suction fan module receiving groove 504 are closed.

Meanwhile, the transverse portion 51 includes a bottom portion 511 seated on the dividing wall 12, an upper surface portion 512 spaced apart from the bottom portion 511 by a predetermined height, and a bottom portion 511. It includes a flow guide 513 connecting the upper surface portion 512 and the upper surface portion 512.

One side end of the bottom portion 511 defines the lower edge of the inlet 501 and is spaced apart from the side cover 112 by a length corresponding to the width of the damper 711. In addition, the inner communication hole 122 is formed in a portion of the separation wall 12 that closes the space between one end of the bottom 511 and the side cover 112.

As another method, the bottom portion 511 is formed to have the same size as the separation wall 12, and, as indicated by a dotted line, the internal communication hole 122 and the external air communication hole 121 are formed in the bottom portion 511. ) may be formed, and in this case, the bottom portion 511 may replace the function of the separation wall 12.

The flow guide 513 is formed at a point spaced a predetermined distance rearward from the front end of the cross section 51, and forms a bypass flow path ( 502) is formed.

In detail, the flow guide 513 extends forward from the rear end of the inlet 501 and extends toward the side portion 53 and the upper surface portion 54. When the flow guide 513 extends from the rear end to the front end of the bypass duct 50, it may extend obliquely in a direction away from the side cover 112 or rounded with a predetermined curvature. In particular, the flow guide 513 may be formed to be rounded with a predetermined curvature at a corner area where the side and front surfaces of the bypass duct 50 meet.

Additionally, the flow guide 513 may extend to the other side end of the transverse portion 51, that is, the side portion 53, and then be gently rounded upward with a predetermined curvature and extended.

Meanwhile, the side part 53 includes an external bent part 531 and an internal bent part 532. In detail, the external bent portion 531 is a portion bent upward at the other end of the bottom portion 511, that is, the side end opposite to the inlet 501, and is in close contact with the inner surface of the side cover 112. do.

Additionally, the internal bent portion 532 is bent and extended upward from the other side end of the upper surface portion 512. The point where the internal bent portion 532 and the upper surface portion 512 meet may be curved to a predetermined curvature.

In addition, the front end of the upper surface 54 is in close contact with the front cover 111 and the rear end is in close contact with the rear cover 113, and an outlet 503 is formed in a portion of the upper surface 54. The flow guide 513 extends to the upper side of the side portion 53, is rounded backward and is connected to the rear end of the outlet 503. Accordingly, the outlet 503 can be understood as an outlet of the bypass passage 502.

In summary, the flow guide 513 includes a first guide extending from the rear end of the inlet 501 toward the front end of the bypass duct 50, and a first guide bent at the front end of the first guide to form the side portion 53. ), and a third guide extending roundly from the end of the second guide to the upper rear.

In addition, the bypass passage 502 includes a suction area defined by the inlet 501 and the first guide, a transfer area extending from the suction area to the side portion 53, and an end of the transfer area. It can be described as consisting of a discharge area extending from to the discharge port 503.

As shown in Figure 3, among the four partition walls 16 extending from the side edge of the heating element 51, the partition wall dividing the internal air discharge space (S4) and the external air discharge space (S2) is It is connected to the side portion 53 of the bypass duct 50. Accordingly, the discharge port 503 communicates with the air discharge space S4. In addition, the indoor air flowing along the bypass flow path 502 is discharged only to the interior exhaust space (S4) through the outlet 503, and is discharged to the outside of the ventilation device 10 by the exhaust fan module 62. Everything is discharged.

The outlet 503 may be formed in a length ranging from the front end to the rear end of the upper surface portion 54, or may be formed about half the length of the upper surface portion 54 as shown.

Hereinafter, the flows of indoor air and outdoor air in a ventilation device according to an embodiment of the present invention for each operation mode will be described with reference to the drawings.

Figure 8 is a diagram showing the air flow inside the ventilation device in electrothermal ventilation mode.

Referring to FIG. 8, when the electric heat ventilation mode is executed, both the suction fan module 61 and the exhaust fan module 62 operate, and the bypass damper 71 opens the air exhaust passage and the bypass duct. The inlet 501 of (50) is shielded. Then, the supply damper 72 and the exhaust damper 73 are closed. Closing the supply damper 72 and the exhaust damper 73 means that the outside air supply flow path 114 and the internal air discharge flow path 115 do not communicate with the upper space 116 where the evaporation fan module 63 is accommodated. means that

In this state, when the suction fan module 61 is driven, outdoor air flows into the outside air inlet space (S1) through the outside air inlet duct 31. The outdoor air flowing into the outdoor air inlet space (S1) passes through the air purification module 40 and then is guided to the outdoor air discharge space (S2).

The outdoor air guided to the outdoor air discharge space (S2) is sucked in by the suction fan module 61 and then guided to the outdoor air supply passage 114 through the outdoor air communication hole 121. Outdoor air guided to the outdoor air supply passage 114 is supplied indoors through the outdoor air outlet 111 and the outdoor air discharge duct 32.

When the exhaust fan module 62 is driven, indoor air is guided to the internal airway discharge path 115 through the internal airway inlet duct 33, and passes through the internal airway communication hole 122 and the internal airway discharge passage. You will be guided to the betting inflow space (S3).

The indoor air guided to the indoor air inlet space (S3) passes through the heating element 41 and then is guided to the indoor air outlet space (S4). The outdoor air and indoor air exchange heat while passing through the heating element 41 (waste heat recovery).

The indoor air guided to the indoor air exhaust space (S4) is sucked in by the exhaust fan module 62 and then discharged to the outdoors through the indoor air exhaust duct 34.

In winter, due to the waste heat recovery process that occurs in the air purification module 40, outdoor air absorbs heat from indoor air discharged outdoors and then supplies it indoors, thereby preventing the indoor temperature from rapidly dropping. .

On the other hand, in the summer, outdoor air releases heat into indoor air discharged outdoors and is supplied indoors at a lower temperature, thereby preventing the indoor temperature from rapidly rising.

Figure 9 is a diagram showing the air flow inside the ventilation device in rapid ventilation mode.

Referring to FIG. 9, when the rapid ventilation mode (or outside air cooling mode) is executed, the suction fan module 61 and the exhaust fan module 62 operate, and the evaporation fan module 63 does not operate.

In detail, the bypass damper 71 operates to close the air discharge passage, while the inlet 501 of the bypass duct 50 is opened. In addition, the supply damper 72 and the exhaust damper 73 are also maintained in a closed state.

When the suction fan module 61 operates in this state, as in the electric heat ventilation mode, outdoor air flows through the outside air inlet duct 31, the outside air inlet space (S1), the air purification module 40, and the outside air discharge space ( S2), the outside air supply passage 114, and the outside air discharge duct 32 are sequentially passed through to be supplied indoors.

And, when the exhaust fan module 62 operates, the indoor air passes through the indoor air inlet duct 33, the indoor air discharge path 115, and the indoor air communication hole 122, and then through the bypass duct 50. It sequentially passes through the inlet 501, the bypass passage 502, the outlet 503, the internal air discharge space (S4), and the internal air discharge duct 34 and is discharged outdoors.

In this case, since the indoor air does not pass through the heating element 41, the outdoor air flowing into the room is discharged into the room at the outdoor temperature. Therefore, when the rapid ventilation mode is executed in the fall or winter, there is an advantage that fresh outdoor air with a low temperature is supplied indoors.

In addition, since indoor air does not pass through the heating element 41, when cooking in the kitchen, oil, smoke, and other harmful substances scattered in the air during the cooking process are directly discharged outdoors, and the heating element 41 contamination can be minimized.

If the electric heat ventilation mode is executed while cooking in the kitchen, the indoor polluted air passes through the heating element 41 and contaminates the inner peripheral surface of the heating element 41. As a result, the lifespan of the heating element 41 may be shortened.

Therefore, when the indoor air is heavily polluted, a rapid ventilation mode using the bypass duct 50 can be executed to quickly discharge the indoor air to the outside and at the same time minimize contamination of the heating element.

Figure 10 is a diagram showing the air flow inside the ventilation device in rapid cooling mode.

Referring to FIG. 10, when the rapid cooling mode is executed, the suction fan module 61 and the exhaust fan module 62 stop, the refrigerant cycle operates, and the evaporator 64 and the evaporation fan module 63 It works. When the refrigerant cycle operates, low-temperature, low-pressure two-phase refrigerant flows into the evaporator 64.

In addition, the exhaust damper 73 operates to shield the internal air discharge passage 115 and allow the internal air discharge passage 115 and the upper space 116 to communicate.

In this state, when the evaporation fan module 63 operates, indoor air flows into the air intake duct 33 and is then guided to the air discharge passage 115. The indoor air guided to the air discharge flow path 115 is guided to the upper space 116, passes through the evaporation fan module 63 and the evaporator communication hole 131, and is guided to the lower space 117. .

The temperature of the indoor air guided to the lower space 117 decreases as it passes through the evaporator 64, and then is supplied back into the room through the outdoor air outlet 1111.

Figure 11 is a diagram showing the air flow inside the ventilation device in simultaneous electric ventilation/outside air cooling mode.

Referring to FIG. 11, when the electric heat ventilation/outside air cooling simultaneous mode is executed, the electric heat ventilation mode and outside air cooling mode are performed simultaneously.

The outdoor air cooling mode refers to an operation mode in which outdoor air flowing into the ventilation device 10 is cooled while passing through the evaporator 64 and then supplied indoors.

In detail, the electric heat ventilation/outdoor air cooling simultaneous mode is the same as the electric heat ventilation mode described in FIG. 8, but the difference is that the supply damper 72 is switched to close the outside air supply passage 114. Then, the outdoor air sucked by the suction fan module 61 does not flow along the outdoor air supply passage 114 after passing through the air purification module 40, but flows into the airflow in which the evaporation fan module 63 is accommodated. It is guided to the upper space 116. And, the outdoor air guided to the upper space 116 passes through the evaporation fan module 63 and the evaporator communication hole 131 and then is guided to the lower space 117. The outdoor air guided to the lower space 117 is cooled while passing through the evaporator 64 and then supplied indoors through the outdoor air discharge duct 32.

The electric heat ventilation/outside air cooling simultaneous mode can be used in situations where the indoor and outdoor temperature difference is relatively large, when the inflow of a large amount of fresh outdoor air is required and when waste heat recovery is required.

For example, in the summer, when indoor air quality is poor and fresh outdoor air is needed, but the window cannot be opened because the outside temperature is high, when the electric heat ventilation/outdoor air cooling simultaneous mode is executed, the incoming outdoor air is connected to the electric heating element 41. As it passes through, it exchanges heat with indoor air, which has a relatively low temperature, and the temperature decreases. Additionally, outdoor air whose temperature has dropped to a certain level passes through the evaporator 64 and is cooled to a temperature similar to the indoor temperature before being supplied indoors. Therefore, since outdoor air with a high oxygen content passes through the heating element 41 and is primarily cooled to a temperature lower than the outdoor temperature, there is an advantage that excessive load is not applied to the evaporator 64. Therefore, there is an advantage in that an evaporator with a small capacity can be used.

In addition, in winter, when the refrigerant cycle is operated by a heat pump and the evaporator 64 acts as a condenser, the incoming outdoor air absorbs heat from indoor air while passing through the heating element 41 and then passes through the condenser. , Do not overload the condenser.

Figure 12 is a diagram showing the air flow inside the ventilation device in simultaneous rapid ventilation/outside air cooling mode.

Referring to FIG. 12, the rapid ventilation/outside air cooling simultaneous mode is the same as the rapid ventilation mode described in FIG. 9, but the difference is that the supply damper 72 is switched to close the outside air supply passage 114. . Then, the outdoor air sucked by the suction fan module 61 does not flow along the outdoor air supply passage 114 after passing through the air purification module 40, but flows into the airflow in which the evaporation fan module 63 is accommodated. It is guided to the upper space 116. And, the outdoor air guided to the upper space 116 passes through the evaporation fan module 63 and the evaporator communication hole 131 and then is guided to the lower space 117. The outdoor air guided to the lower space 117 is cooled while passing through the evaporator 64 and then supplied indoors through the outdoor air discharge duct 32.

The rapid ventilation/outside air cooling simultaneous mode is useful when the indoor air pollution level is high due to cooking, so it is necessary to quickly discharge indoor air to the outside and bring in a large amount of fresh outside air, and waste heat recovery is not required. This is a driving mode that can be used. In particular, it can be said to be a useful driving mode in late summer or early fall when indoor air quality is low.

Figure 13 is a diagram showing the air flow inside the ventilation device in rapid ventilation/mixed cooling mode.

Referring to FIG. 13, the rapid ventilation/mixed cooling mode is the same as the rapid ventilation/outside air cooling simultaneous mode described in FIG. 12, but the exhaust damper 73 is switched at an angle of less than 90 degrees, and the internal air inlet duct The difference is that the indoor air flowing in through (33) is divided and flows toward the heating element 41 and the upper space 116.

In detail, when the rapid ventilation/mixed cooling mode is executed, the outdoor air sucked by the suction fan module 61 flows along the vent discharge passage 115 and flows into the bypass passage 501 and the upper space ( 116) and flows separately. And, the indoor air flowing into the upper space 116 is guided to the lower space 117 by the evaporation fan module 63. The indoor air introduced into the lower space 117 is cooled while passing through the evaporator 64 and then supplied indoors through the outdoor air discharge duct 32.

The rapid ventilation/mixed cooling mode can be said to be a useful operating mode in the summer, when indoor air quality deteriorates rapidly while cooking and at the same time the indoor temperature rises rapidly due to the use of cooking appliances.

That is, part of the indoor air that rapidly deteriorates during the cooking process is quickly discharged outdoors without passing through the heating element 41, thereby minimizing contamination of the heating element 41. In addition, fresh outdoor air and a portion of the indoor air sucked through the exhaust discharge passage 115 are supplied indoors at a low temperature, thereby lowering the indoor temperature and improving indoor air quality.

Since a part of the indoor air flowing along the exhaust discharge path 115 passes through the evaporator 64 and is then supplied back to the indoor, the indoor air quality does not improve rapidly at once, but this operation mode is maintained for a predetermined period of time. By maintaining this, indoor air quality is improved.

Figure 14 is a diagram showing the air flow inside the ventilation device in electrothermal ventilation/mixed cooling mode.

Referring to FIG. 14, the electrothermal ventilation/mixed cooling mode is the same as the electrothermal ventilation/outside air cooling simultaneous mode described in FIG. 11, but the exhaust damper 73 is switched at an angle of less than 90 degrees, and the internal air inlet duct The difference is that the indoor air flowing in through (33) is divided and flows toward the heating element 41 and the upper space 116.

When the electrothermal ventilation/mixed cooling mode is executed, the outdoor air sucked by the suction fan module 61 flows along the exhaust discharge passage 115 and then flows into the bypass passage 501 and the upper space 116. ) and flows separately. And, the indoor air flowing into the upper space 116 is guided to the lower space 117 by the evaporation fan module 63. The indoor air introduced into the lower space 117 is cooled while passing through the evaporator 64 and then supplied indoors through the outdoor air discharge duct 32.

The electric heat ventilation/mixed cooling mode operation has the advantage of placing less load on the evaporator 64 because the incoming outdoor air and the discharged indoor air exchange heat in the heat exchanger 41 to recover waste heat. In addition, since the incoming outdoor air and the outgoing indoor air are cooled while passing through the evaporator 64, the indoor temperature is lowered to the set temperature in a short period of time.

Figure 15 is a diagram showing the air flow inside the ventilation device in the electrothermal ventilation/rapid cooling mixed mode.

Referring to FIG. 15, the electrothermal ventilation/rapid cooling mixed mode is the same as the electrothermal ventilation mode described in FIG. 8, except that a portion of the discharged indoor air is branched into the upper space 116 of the air conditioning unit 11b, There is a difference in that it is cooled while passing through the evaporator 64 and then supplied back into the room.

In detail, the simultaneous electrothermal ventilation/outside air cooling mode of FIG. 11 is an operation mode in which, in the electrothermal ventilation mode of FIG. 8, only incoming outdoor air passes through the evaporator 64 and then is supplied indoors, and the electrothermal ventilation mode of FIG. 14 /Mixed cooling mode is a mode in which, in the electrothermal ventilation mode of FIG. 8, a portion of the incoming outdoor air and the discharged indoor air pass through the evaporator 64 and then are supplied indoors, and the electrothermal ventilation/rapid cooling mixed mode can be summarized as a mode in which, in the electrothermal ventilation mode of FIG. 8, only a portion of the discharged indoor air passes through the evaporator 64 and is then supplied into the room.

Figure 16 is a diagram showing the air flow inside the ventilation device in rapid ventilation/rapid cooling mixed mode.

Referring to FIG. 16, the rapid ventilation/rapid cooling mixed mode is the same as the rapid ventilation mode described in FIG. 9, but a portion of the discharged indoor air is branched into the upper space 116 of the air conditioning unit 11b, There is a difference in that it is cooled while passing through the evaporator 64 and then supplied back into the room.

In detail, the rapid ventilation/outside air cooling simultaneous mode of FIG. 12 is an operation mode in which, in the rapid ventilation mode of FIG. 9, only incoming outdoor air passes through the evaporator 64 and then is supplied indoors, and the rapid ventilation mode of FIG. 13 /Mixed cooling mode is a mode in which, in the rapid ventilation mode of FIG. 9, some of the incoming outdoor air and some of the discharged indoor air pass through the evaporator 64 and then are supplied indoors, and the rapid ventilation/rapid cooling mixed mode can be summarized as a mode in which, in the rapid ventilation mode of FIG. 9, only a portion of the discharged indoor air passes through the evaporator 64 and is then supplied into the room.

Figure 17 is a perspective view of a ventilation device equipped with an outdoor air discharge duct according to another embodiment of the present invention, Figure 18 is a cross-sectional view of the ventilation device cut along 18-18 of Figure 17, and Figure 19 is a view of the outdoor air discharge duct. is an exploded perspective view, and Figure 20 is a cross-sectional view of the outdoor air discharge duct.

Referring to FIGS. 17 to 20 , the outdoor air outlet 1111 is formed across the outdoor air supply passage 114 and the lower space 117 of the air conditioning unit 11b. In other words, the supply-side mullion 14 divides the outdoor air outlet 1111 into a left discharge space and a right discharge space.

The outdoor air discharge duct 32a according to this embodiment appears to be a single duct in appearance, but includes an internal duct 321 through which outdoor air passing through the heating element 41 flows, and indoor and/or air passing through the lower space 117. It is characterized as a double duct including an external duct 322 through which outdoor air flows.

That is, the interior of the outdoor air discharge duct 32a includes an internal flow path through which outdoor air passing through the heating element 41 flows, and an external flow path through which indoor and/or outdoor air passing through the evaporator 64 flows. Two flow paths are formed.

In addition, since the internal flow path and the external flow path can be opened and closed independently, the ventilation function that allows only outdoor air to be supplied indoors and the cooling function that allows indoor and/or outdoor air that has passed through the evaporator to be supplied indoors can be separated. There is.

In detail, the external air discharge duct 32a includes an external duct 322, an internal duct 321 inserted into the external duct 322, and a discharge tube of the external duct 322 and the internal duct 321. It includes a discharge cover 323 mounted on the end.

The external duct 322 includes a cylindrical external duct body 3221, an external diffuser 3223 extending from the discharge side end of the external duct body 3221, and an external discharge pipe that opens and closes the external diffuser 3223. Includes cover 3232.

In addition, the internal duct 321 includes an internal duct body 3211 having a smaller diameter than the external duct body 3221, a guide duct 3212 extending from the inlet end of the internal duct body 3211, and , It includes an internal diffuser 3213 extending from the discharge side end of the internal duct body 3211, and an internal discharge cover 3231 that opens and closes the internal diffuser 3213.

The guide duct 3212 has a semi-cylindrical shape, and the radius D1 of the guide duct 3212 is designed to be smaller than the diameter D and the radius D2 of the external duct body 3221. However, depending on the design conditions, that is, the formation position of the external air outlet 1111, the radius of the guide duct 3212 can be appropriately set. For example, when the position of the outside air outlet 1111 is set so that the center of the outside air outlet 1111 is located on the supply side mullion 14, the radius of the guide duct 3212 is the external duct body 3221. ) may be formed to the same size as the radius of.

Additionally, the inlet end of the guide duct 3212 may have the same cross-sectional shape as the outside air discharge flange 22 communicating with the outside air supply passage 114. Specifically, as shown in FIG. 18, the circular arc portion of the guide duct 3212 is inserted into the outer peripheral surface of the outside air discharge flange 22, and the diameter portion of the guide duct 3212 is connected to the supply side mullion 14. is in contact with the front end of so that only outdoor air flowing along the outdoor air supply passage 114 flows into the guide duct 3212.

In addition, the portion where the guide duct 3212 and the internal duct body 3211 meet is formed to be rounded with a predetermined curvature, thereby minimizing the flow resistance of outdoor air flowing into the guide duct 3212.

Meanwhile, the outer peripheral surface of the internal duct body 3211 is spaced apart from the inner peripheral surface of the external duct body 3221, so that air flowing into the external duct body 3221 flows through the external duct body excluding the internal duct body 3211. It is made to flow uniformly throughout the internal space of (3221).

A cutout 3224 is formed at the entrance end of the external duct body 3221 to seat the guide duct 3212, and a seating surface 3222 is formed at the end of the cutout 3224. The seating surface 3222 is a portion on which the outlet end of the guide duct 3212 is seated. The seating surface 3222 is formed to be rounded with a curvature corresponding to the curvature of the outlet end of the guide duct 3212, so that air flowing into the external duct body 3221 flows through the guide duct 3212 and the outside. Leaking through the contact area of the duct body 3221 can be minimized.

Meanwhile, the outer discharge cover 3232 may have a ring shape, and the inner discharge cover 3231 may have a circular shape. Additionally, the width of the external discharge cover 3232 may be set to a value obtained by subtracting the radius of the outlet end of the internal diffuser 3213 from the radius of the outlet end of the external diffuser 3223.

Claims (15)

A housing including a front cover, a rear cover, and a side cover connecting edges of the front cover and the rear cover;
a separation wall separating the internal space of the housing into an upper ventilation unit and a lower air conditioning unit;
Ventilation components installed in the ventilation unit; and
Including air conditioning parts installed in the air conditioning unit,
In the front cover,
A vent inlet through which indoor air flows in,
An air outlet is formed through which indoor air and/or outdoor air is discharged,
In the rear cover,
an outdoor air inlet through which outdoor air flows,
It is a ventilation device in which an exhaust outlet is formed through which indoor air is discharged,
a supply-side mullion erected at a point close to one end of the interior of the air conditioning unit; and
It includes a discharge side mullion erected at a point close to the other side end inside the air conditioning unit,
The air conditioning component is disposed between the supply side mullion and the discharge side mullion,
An external air supply flow path is defined between the supply-side mullion and one side of the side cover close to the supply-side mullion,
A ventilation device, characterized in that an air discharge flow path is defined between the discharge side mullion and the other side of the side cover close to the discharge side mullion. According to claim 1,
It further includes a partition plate connecting the supply-side mullion and the discharge-side mullion to divide the internal space of the air conditioning unit into an upper space and a lower space,
The air conditioning parts are,
An evaporation fan module placed in the upper space; And
A ventilation device including an evaporator placed in the lower space. According to claim 2,
The air outlet is,
It is formed at a point divided into two areas by the supply side mullion,
A portion of the air outlet communicates with the external air supply passage,
A ventilation device, characterized in that another part of the air outlet communicates with the lower space. According to claim 3,
An evaporator communication hole is formed in the partition plate,
A ventilation device, characterized in that the discharge port of the evaporation fan module is connected to the communication hole. According to claim 4,
The ventilation parts are,
a heating element in the form of a hexahedron disposed in the front-back direction inside the ventilation unit so that its upper and lower surfaces are in close contact with the front and rear covers, respectively;
a plurality of partition walls extending from four side edges of the heating element and dividing the internal space of the ventilation unit into four spaces;
an exhaust fan module communicating with the exhaust outlet;
A ventilation device including a suction fan module communicating with the outside air inlet. According to claim 5,
The four spaces above are:
an outside air inflow space communicating with the outside air inlet;
an outdoor air discharge space defined opposite the outdoor air inlet space with respect to the heating element and communicating with the outdoor air inlet;
a bet discharge space communicating with the bet discharge port; and
It is defined opposite the bet discharge space with respect to the heating element, and includes a bet inflow space communicating with the bet discharge space,
The exhaust fan module,
placed in the bet discharge space,
The discharge port is connected to the bet discharge port,
The suction fan module is,
A ventilation device characterized in that it is placed in an outdoor air discharge space. According to claim 6,
An outdoor air communication hole is formed at a point of the dividing wall defining the upper surface of the outdoor air supply passage,
A ventilation device, characterized in that the discharge port of the suction fan module is connected to the outdoor air communication hole. According to claim 7,
An internal air communication hole is formed at a point of the separation wall defining the upper surface of the internal air discharge flow path,
A ventilation device, characterized in that the internal air inflow space and the internal air discharge path communicate through the internal air communication hole. According to claim 8,
Further comprising an exhaust damper provided on the discharge side mullion,
Ventilation device, characterized in that by opening and closing the exhaust damper, indoor air sucked through the indoor air inlet flows to one of the indoor air inlet space and the upper space. According to claim 7,
Further comprising a supply damper provided on the supply side mullion,
A ventilation device, characterized in that by opening and closing the supply damper, outdoor air passing through the outdoor air communication hole flows to one of the outdoor air supply passage and the upper space. According to claim 8,
It is provided in the ventilation unit, and the ventilation device further includes a bypass duct formed therein, which bypasses the heating element and connects the inside of the inside of the inside of the inside of the inside of the inside of the inside of the inside of the inside. According to claim 11,
The entrance of the bypass flow path communicates with the bet inflow space,
The outlet of the bypass flow path communicates with the vent discharge space,
A ventilation device further comprising a bypass damper mounted at the inlet of the bypass flow path. According to claim 12,
Ventilation device, characterized in that by opening and closing the bypass damper, the indoor air passing through the ventilation discharge passage flows to one of the bypass passage and the ventilation inlet space. According to claim 6,
a HEPA filter mounted on one side of the heating element, one side of which communicates with the outside air inflow space;
A ventilation device further comprising a pre-filter mounted on the other side of the HEPA filter. According to claim 14,
The heating element, the HEPA filter, and the pre-filter are provided in the form of an air purification module by a frame,
A ventilation device, characterized in that a mounting hole for inserting and withdrawing the air purification module is formed in the front cover.

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