KR20200004520A - Heat exchanger - Google Patents

Abstract

The present invention relates to an electric heat exchanger. According to an aspect, the electric heat exchanger comprises: a housing having one side surface on which a ventilation port and an air supply port are formed and the other side surface, provided as the opposite surface of the one side surface, on which an outdoor air port and an exhaust port are formed; an air guide disposed inside the housing and having a hole to face the ventilation port, the air supply port, the outdoor air port, and the exhaust port; and a heat exchange unit accommodated in the air guide and including an electric heat exchange element that performs heat exchange between air sucked into the outdoor air port and air sucked into the ventilation port. The air guide comprises a division unit protruding from an inner surface of the air guide to be coupled to an outer surface of the heat exchange unit and configured to divide an inner space of the air guide into four areas.

Description

Heat exchanger {HEAT EXCHANGER}

This embodiment relates to a total heat exchanger.

Inside the building, a ventilation unit is installed to discharge the polluted air from the inside to the outside and to supply the fresh air to the inside.

In the case of single households such as apartments and villas, or in public facilities such as school classrooms and sickrooms, indoor air can be rapidly polluted, and the use of ventilation devices is essential. It can lower the pollution level.

In particular, in recent years, a large number of heat recovery type ventilation devices are installed in which heat exchange elements are installed in order to minimize the temperature difference by heat recovery between the indoor air and the outdoor air.

On the other hand, from mid-March to mid-June, from mid-September to mid-November (commonly referred to as mid-term), cold and heating loads due to electrothermal exchange ventilation are simple induction and general (bypass) ventilation. Since there is a tendency to increase, in the intermediate stage, the general (bypass) ventilation through simple air induction rather than the total heat exchanger can reduce the cooling and heating energy.

In particular, the outside air cooling through the air freshening is very effective in school classrooms or hospitals where the amount of air-conditioning energy is used, and thus, it is possible to reduce the efficient air-conditioning energy.

In addition, when the discharge of indoor air is to be made rapidly, such as in the case of fire, when the indoor air is discharged through the heat exchanger, the movement speed of the air is significantly lowered, so that the indoor air can be quickly discharged through the bypass passage.

The present invention is to provide a total heat exchanger capable of securing a large space by compactly arranging the components in the housing, it can be firmly fixed to each component.

The total heat exchanger according to the present embodiment includes a housing in which a vent and an air supply port are formed on one side, and an external device and an exhaust port are formed on the other side of the side opposite to the one side; An air guide disposed in the housing and having holes formed to face the ventilation holes, the air supply holes, the outer parts, and the exhaust holes, respectively; And a heat exchange unit accommodated inside the air guide and including a total heat exchange element for exchanging air sucked into the external device and air sucked into the ventilation hole, wherein the air guide protrudes from an inner surface of the air guide. It is coupled to each of the outer surface of the heat exchange unit, and comprises a partition for partitioning the inner space of the air guide into four areas.

According to the present embodiment, there is an advantage that the partition unit may partition between the ventilation space and the air supply space, between the air supply space and the exhaust space, between the exhaust space and the external air space, and between the external air space and the ventilation space.

In addition, since each compartment is provided with a groove for accommodating the internal parts, the operator can easily assemble each part in the air guide has the advantage that the production efficiency is improved.

In addition, by forming a curved section on the inner surface of the air guide, there is an advantage that the flow of air can be made smoothly.

In addition, by arranging the wirings to perform electrical connection in the air guide in the wiring groove, there is an advantage that can prevent the wiring from getting tangled with each other or contact with other components.

1 is a perspective view of a total heat exchanger according to an embodiment of the present invention.
Figure 2 is a perspective view showing the top cover removed from the total heat exchanger of Figure 1;
Figure 3 is a perspective view showing the air guide removed from the total heat exchanger of FIG.
Figure 4 is an exploded perspective view of the total heat exchanger according to an embodiment of the present invention.
5 is a plan view as viewed from the top of the total heat exchanger of FIG.
6 is a perspective view of a heat exchange unit according to an embodiment of the present invention.
7 is a perspective view of an air guide according to an embodiment of the present invention.
8 is an exploded perspective view of an air guide according to an embodiment of the present invention.
9 is a cross-sectional view showing the state of the lower surface of the air guide according to an embodiment of the present invention.
FIG. 10 is a perspective view of the air guide shown by removing the internally arranged component from FIG. 7; FIG.
FIG. 11 is a cross-sectional view of an internal layout component removed from the air guide of FIG. 9 according to an embodiment of the present disclosure. FIG.
12 is a cross-sectional view showing the air flow direction in the air guide according to an embodiment of the present invention.
13 is a cross-sectional view showing the connection state of the wiring in the air guide according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described through exemplary drawings. In describing the reference numerals in the components of each drawing, the same components are denoted by the same reference numerals as much as possible even though they are shown in different drawings.

In addition, in describing the components of the embodiments of the present disclosure, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being 'connected', 'coupled' or 'connected' to another component, the component may be directly connected, coupled or connected to the other component, but the component and its other components It is to be understood that another component may be 'connected', 'coupled' or 'connected' between the elements.

1 is a perspective view of a total heat exchanger according to an embodiment of the present invention.

Referring to FIG. 1, the total heat exchanger 1 according to the exemplary embodiment of the present invention has an outer shape formed by the housing 10. The housing 10 may be in the form of a box, and an accommodation space may be formed therein for installing internal components such as the heat exchange unit 30.

The housing 10 may be formed of a metal material to ensure rigidity, but is not limited thereto. In addition, a bracket or the like for convenience of installation may be attached to the outside of the housing 10. Thus, the heat exchanger 1 can be fixed to the installation area through the bracket.

The housing 10 may include a top cover 11, a side cover 12, and a bottom cover 13. The top cover 11 may be located above the side cover 12, and the bottom cover 13 may be located below the side cover 12. The top cover 11 and the bottom cover 12 may face each other in the up and down directions.

The bottom cover 13 and the side cover 12 may be integrally formed with each other. The top cover 11 is preferably detachably installed on the side cover 12 for the convenience of replacement of the internal parts. The top cover 11 may also be formed integrally with the side cover 12, of course. The side cover 12 may be integrally formed, or two or more side covers may be combined.

The side cover 12 may be provided with an external device 17 through which outdoor air (OA) is sucked in, and a ventilation hole (see FIG. 4) through which indoor air (RA) is sucked. In addition, the side cover 12 may be provided with an exhaust port 16 through which exhaust air (EA) is discharged, and an air supply port 18 (see FIG. 4) through which supply air (SA) is discharged.

The outside air may be outdoor air. The outside air may generally be low in temperature and low in carbon dioxide content. On the other hand, indoor air may have a relatively high temperature due to body temperature of people who are active indoors. In addition, the carbon dioxide content may be high by people's breathing.

That is, the total heat exchanger 1 may discharge the indoor air to the outside through the ventilation port 15 and the exhaust port 16, and supply the fresh outdoor air to the room through the external device 17 and the air supply 18.

The outer surface 17 and the exhaust port 16 may be formed on one surface of the side cover 12, and the ventilation port 15 and the air supply 18 may be formed on the other surface opposite to the one surface. That is, the surface in which the outer side mechanism 17 and the exhaust port 16 are formed in the side cover 12 can oppose the surface in which the ventilation port 15 and the air supply port 18 are formed.

The ventilation port 15 may be disposed to face the outer opening 17, and the exhaust port 16 may be disposed to face the air supply 18.

A damper may be installed in at least one of the ventilation port 15, the exhaust port 16, the external device 17, and the air supply device 18. For example, the ventilation hole 15 may be provided with a ventilation damper (not shown). An exhaust damper 16a may be installed in the exhaust port 16. An external air damper 17a may be installed in the external device 17. An air supply damper (not shown) may be installed in the air supply mechanism 18.

At this time, it is preferable that the damper provided in the outer mechanism 17 and the ventilation opening 15 through which air is sucked is an electric damper. The electric damper may include a vane for adjusting an opening degree of a flow path through which air flows according to a rotation angle, and a damper actuator for operating the vane. The controller 59 may operate the damper actuator to control the opening degree of each damper. Increasing the damper opening may mean that the damper is open. Decreasing the damper opening may mean that the damper is closed.

By operating the damper actuator under the control of the controller 59, the rotation angle of the vane can be controlled. In this way, the intake of air through the outer mechanism 17 or the ventilation opening 15 can be controlled.

It is preferable that the dampers provided in the exhaust port 16 and the air supply port 18 through which air is discharged are back-draft dampers (BDD). Therefore, it is possible to prevent air from being sucked through the exhaust port 16 and the air supply port 18.

On the other hand, the control unit 59 may be installed in the housing 10. In more detail, the controller 59 may be installed in the side cover 12. The side cover 12 may be formed with an opening for installing the controller, and the controller 59 may be installed at the opening for installing the controller. The controller 59 may be installed to protrude in the inner direction of the housing 10.

The control unit 59 may be installed on a surface of the side cover 12 in which the vent port 15, the exhaust port 16, the external device 17, and the air supply port 18 are not formed. For example, when the vent port 15 and the air supply port 18 are formed on the rear surface of the housing 10, and the outer mechanism 17 and the exhaust port 16 is formed on the front surface of the housing 10, the control unit 59 May be installed on the right side or the left side of the housing 10.

The control unit 59 may include a communication unit, an interface unit, an inverter unit, and the like, and control the overall operation of the heat exchanger 1.

FIG. 2 is a perspective view illustrating the top cover removed from the total heat exchanger of FIG. 1.

2, the total heat exchanger 1 according to the embodiment of the present invention may include an air guide 200. The air guide 200 may also be referred to as an upper air guide in that the air guide 200 covers the upper and side surfaces of components disposed inside the housing 10. That is, the air guide 200 is coupled to cover the upper surface of the inner space formed inside the side cover 12 and the bottom cover 13. At this time, the side of the air guide 200 is disposed to face the inner surface of the side cover 12, some parts of the heat exchanger (1) may be accommodated inside the air guide 200.

The air guide 200 forms a bypass flow path 210 (refer to FIG. 8) to allow the indoor air sucked into the ventilation port 15 to bypass the heat exchange unit 30 and be discharged to the exhaust port 16. Can be. This will be described in detail later.

Air guide 200 may be made of a variety of materials, it is preferable that the expanded polystyrene (EPS: Expandable Polystyrene) material. Foamed polystyrene (EPS) is light and excellent in heat insulation, sound insulation, cushioning, etc. to maintain the heat insulation inside the heat exchanger (1), reduce the noise generated in the blower (16b, 18b, Fig. 4), etc. There is an advantage that can protect the internal components of the heat exchanger (1) from the impact of. The air guide 200 may be manufactured as a single injection molding, and thus may be manufactured in various shapes.

The top surface of the air guide 200 may be in contact with the bottom surface of the top cover 11. That is, the top surface of the air guide 200 may coincide with the top surface of the side cover 12. In other words, the air guide 200 may be coupled to cover the upper surface of the components disposed inside the housing 10. Therefore, the bottom cover 13 is disposed below the parts, and the air guide 200 is disposed above. At least some of the side surfaces of the air guide 200 may be in contact with the inner surface of the side cover 12. In addition, the overall height of the air guide 200 may be equal to the distance between the top surface of the bottom cover 13 and the bottom surface of the top cover 11.

Figure 3 is a perspective view showing the air guide removed from the heat exchanger of Figure 2, Figure 4 is an exploded perspective view of the total heat exchanger according to an embodiment of the present invention, Figure 5 is a plan view as viewed from the top of the heat exchanger of Figure 3 6 is a perspective view of a heat exchange unit according to an embodiment of the present invention.

3 to 6, the total heat exchanger 1 according to the exemplary embodiment of the present invention may include a heat exchange unit 30. The heat exchange unit 30 may exchange heat between the outside air and the indoor air.

The heat exchange unit 30 may have a substantially cuboid or cube shape. The heat exchange unit 30 may be installed in the housing 10. In more detail, the heat exchange unit 30 may be located under the upper air guide 200.

The height of the heat exchange unit 30 may be lower than the height of the inner space of the housing 10. This is because the air guide 200 is positioned above the heat exchange unit 30 to form a bypass flow path 210.

The heat exchange unit 30 may be installed at an angle with the side surface of the heat exchange unit 30 not parallel to the side cover 12. Preferably, the heat exchange unit 30 may be disposed with its side inclined about 45 degrees with the side cover 12. For this reason, the inner space of the air guide 200 may be partitioned into four regions by the heat exchange unit 30. This may be explained as the inner space of the housing 10 is also divided into four regions by the heat exchange unit 30.

That is, as the heat exchange unit 30 is installed at an angle, the interior space of the housing 10 is a ventilation space 51 in communication with the ventilation port 15, an exhaust space 52 in communication with the exhaust port 16, and an external device 17. ) May include an outside air space 53 in communication with each other, and an air supply space 54 in communication with the air supply 18. The air guide 200 may be provided with a plurality of heat exchange unit coupling grooves 224, 231, 248, 252 (see FIG. 9) contacting the outer surface of the heat exchange unit 30 to partition the internal spaces. The heat exchange unit coupling grooves 224, 231, 248, and 252 accommodate the corner regions of the heat exchange unit 30, and may arrange the heat exchange unit 30 inside the air guide 200. This will be described later.

The ventilation space 51, the exhaust space 52, the outside air space 53, and the air supply space 54 may be partitioned from each other by the air guide 200 and the heat exchange unit 30. As a result, a duct may be formed in the housing 10. In this case, the duct may mean a passage through which the sucked air flows and is discharged.

The duct is an outdoor-indoor duct in which outside air is taken in by the outside air 17, and air is discharged into the air supply 18 for supplying such outdoor air to the room, and indoor air is taken in by the ventilation port 15. It may include an indoor-outdoor duct through which air is discharged to an exhaust port 16 for exhausting indoor air to the outside. The indoor-outdoor duct may include a ventilation space 51 and an exhaust space 52, and the outdoor-outdoor duct may include an outside air space 53 and an air supply space 54.

The indoor-outdoor duct and the outdoor-indoor duct share the heat exchange unit 30 so that heat exchange between the air flowing into each duct in the heat exchange unit 30 can occur. To this end, the external device 17 and the air supply 18 may be alternately arranged, and the ventilation port 15 and the exhaust port 16 may be alternately arranged. That is, the heat exchange unit 30 may be disposed at the intersection area of the indoor-outdoor duct and the outdoor-indoor duct.

However, the indoor-outdoor duct may be installed such that a flow path damper is installed so that the air flowing into the indoor-outdoor duct bypasses the heat exchange unit 30 so as not to exchange heat with the outdoor air.

At least one filter 31, 32, 33 may be provided on a side of the heat exchange unit 30. The filters 31, 32, 33 may be installed in contact with the heat exchange unit 30, or may be spaced apart from each other. The filters 31, 32, and 33 may filter out foreign substances contained in the air and purify the air.

In detail, filters 31, 32, and 33 may be installed in the ventilation space 51 side, the outside air space 53 side, and the air supply space 54 side of the circumferential surface of the heat exchange unit 30, respectively. As a result, the indoor air sucked through the ventilation hole 15 may pass through the first filter 32 installed at the side of the ventilation space 51 and may be introduced into the heat exchange unit 30. In addition, the outdoor air sucked through the external device 17 is purified by the second filter 31 installed on the outside air space 53, flows into the heat exchange unit 30, is taken out of the heat exchanger 30, and is supplied to the air supply space. (54) It may be purified again by the third filter 33 installed on the side and discharged to the air supply port (18).

The filters 31, 32, 33 may be various well-known filters, such as a nonwoven filter and a hepa filter. In addition, the plurality of filters 31, 32, and 33 installed on each side of the heat exchange unit 30 may be different types of filters. For example, the third filter 33 on the air supply space 54 may be a HEPA filter which is a high clean filter, and the first filter 32 on the ventilation space 51 side or the second filter on the outside air space 53 side ( 31 may be a nonwoven filter.

The total heat exchanger 1 according to an embodiment of the present invention may include an exhaust blower 16b and an air supply blower 18b. The exhaust blower 16b and the air supply blower 18b may be blowers. The exhaust blower 16b may be installed in the exhaust space 52, and the air supply blower 18b may be installed in the air supply space 54.

The exhaust fan 16b may be installed to communicate with the ventilation port 15 and the exhaust port 16. The exhaust fan 16b may suck the indoor air through the ventilation port 15, and discharge the indoor air passed through the heat exchange unit 30 or the bypass flow path 210 to the exhaust port 16.

The air supply blower 18b may be installed to communicate with the external device 17 and the air supply device 18. The air supply blower 18b may suck the outdoor air into the external device 17 and discharge the outdoor air passed through the heat exchange unit 30 to the air supply device 18.

The control unit 59 can control on / off of each of the exhaust blower 16b and the air supply blower 18b, and can control the flow amount of air by controlling the operating frequencies of the respective blowers 16b and 18b. The controller 59 may be installed in the outside air space 53, but is not limited thereto. However, since the flow path guide 40 is provided in the ventilation space 51, the exhaust fan 16b is provided in the exhaust space 52, and the air supply blower 18b is provided in the air supply space 54, It is preferable that 59 is provided in the outside air space 53.

The total heat exchanger 1 may include a heating heater (not shown). The heating heater is provided in the outdoor air space 53, and can heat outdoor air sucked from the external device 17. For example, in winter, the temperature of outdoor air may be very low, and heat exchange with indoor air in the heat exchange unit 30 may not be sufficiently warm. Therefore, the cold outdoor air is discharged to the air supply 18, so that the temperature of the room may be too low. In order to prevent this, the outdoor air sucked into the external device 16 is primarily heated by a heating heater, and then heat-exchanged with the indoor air in the heat exchange unit 30 to keep the temperature of the air supplied to the air supply 18 warm. Can be. The controller 59 may control the on / off of the heating heater, and may control the temperature of the heating heater.

The total heat exchanger 1 according to the present embodiment may include an air guide coupling part (not shown). For example, a protruding rib protruding from the inner surface of the housing 10 may be formed in the housing 10. In addition, a rib groove for accommodating the protruding rib may be formed on the outer surface or the inner surface of the air guide 20 facing the protruding rib. Therefore, when the air guide 200 in the housing 10 is coupled, the protruding rib is accommodated in the rib groove, so that the coupling between the housing 10 and the air guide 200 can be maintained firmly.

The total heat exchanger 1 according to the embodiment of the present invention may include a flow guide 40. The flow path guide 40 may be installed in the ventilation space 51. The flow path guide 40 may be installed to contact the heat exchange unit 30. The flow path guide 40 may serve to guide the indoor air sucked through the ventilation hole 15 to the heat exchange unit 30 or the bypass flow path 210. The detailed structure and operation | movement of the flow path guide 40 are demonstrated later.

Meanwhile, an opening 14 may be formed in the bottom cover 13 of the housing 10. The opening 14 may be a heat exchange unit 30 installation hole. That is, the heat exchange unit 30 may be inserted into or separated from the housing 10 through the opening 14. Therefore, the shape of the opening 14 may be a square shape corresponding to the shape of the heat exchange unit 30.

The bottom cover 13 may be provided with a door 14a capable of opening and closing the opening 14. In general, since the heat exchanger (1) is installed in the ceiling portion of the room, the user may be easy to access from the lower side of the heat exchanger (1). The user may open the door 14a to install or detach the heat exchange unit 30 through the opening 14. As a result, the inspection, maintenance and replacement of the heat exchange unit 30 may be facilitated.

In addition, various sensors may be provided in the housing 10 or on an outer surface of the housing 10. The sensor may include an outdoor temperature sensor and an indoor temperature sensor.

Referring to FIG. 6, the heat exchange unit 30 may include an upper plate 35, a lower plate 36, a total heat exchange element 38, and a supporter 37. The total heat exchange element 38 may be provided between the upper plate 35 and the lower plate 36.

In the total heat exchange element 38, the indoor air and the outdoor air may be heat-exchanged. In more detail, the electrothermal exchange element 38 may be stacked such that a plurality of outside air guide layers and the inside guide layers intersect with each other. The outside air guide layer may communicate with the outside air space 53 and the air supply space 54, and the inside air guide layer may communicate with the ventilation space 51 and the exhaust space 52.

As a result, the outdoor air sucked through the external device 17 flows to the outside air guide layer, and the indoor air sucked through the ventilation port 15 flows to the inside air guide layer so as to exchange heat with each other. In general, since indoor air is heated by people's body temperature and the like, so that the temperature is higher than that of outdoor air, the temperature of the outdoor air may be increased by the heat exchange.

Thereafter, the heat exchanged indoor air may be discharged to the exhaust port 16, and the heat exchanged outdoor air may be discharged to the air supply 18. That is, warm outdoor air may be supplied to the room through the air supply unit 18. As described above, at least one filter 31, 32, 33 may be provided at a side of the heat exchange unit 30 to purify the air flowing into the total heat exchange element 38.

The upper plate 35 may be located above the total heat exchange element 38. The upper surface of the upper plate 35 may be the upper surface of the heat exchange unit 30.

The upper plate 35 may be located between the bypass flow path 210 and the heat exchange element 38 to be described later. In more detail, the bypass flow path 210 may be positioned above the upper plate 35, and the total heat exchange element 38 may be positioned below the upper plate 35. That is, the upper plate 35 may partition the bypass flow path 210 and the total heat exchange element 38. Accordingly, the upper plate 35 may prevent the air flowing into the bypass flow path 210 from flowing into the total heat exchange element 38 in the bypass mode.

Lower plate 36 may be located below the total heat exchange element (38). The bottom of the lower plate 36 may be the bottom of the heat exchange unit 30. The lower plate 36 may be disposed to face the upper plate 35. The bottom of the lower plate 36 may be provided with a handle (not shown). As described above, the user may separate the heat exchange unit 30 through the opening 14. At this time, since the bottom surface of the heat exchange unit 30 is immediately seen through the opening 14 when the door 14a is opened, the user can easily detach the heat exchange unit 30 by holding the handle.

The supporter 37 may be a vertical edge of the heat exchange unit 30. The supporter 37 may be vertically connected to the upper plate 35 and the lower plate 36. The supporter 37 may be coupled to the heat exchange unit coupling grooves 224, 231, 248, and 252 of the air guide 200.

The user may insert and install the heat exchange unit 30 through the opening 14. For example, the heat exchange unit 30 may have a cube shape, and four supporters 37 may be provided. At this time, when the user inserts the heat exchange unit 30 into the opening 14, the four supporters 37 are respectively coupled to the four heat exchange unit coupling grooves 224, 231, 248, and 252, thereby providing a heat exchange unit 30. ) Can be installed in the correct location.

Hereinafter, the structure of the air guide 200 will be described.

7 is a perspective view of an air guide according to an embodiment of the present invention, Figure 8 is an exploded perspective view of the air guide according to an embodiment of the present invention, Figure 9 is a view of the lower surface of the air guide according to an embodiment of the present invention. 10 is a sectional view of the air guide shown by removing the internal arrangement component in FIG. 7, and FIG. 11 is a cross-sectional view illustrating the internal arrangement component of the air guide of FIG. 9 according to an embodiment of the present invention. to be.

7 to 11 are shown for changing the up and down directions of the air guide 200, for convenience of description. Therefore, the opening surface that opens the space in which the internal component is disposed in the air guide 200 becomes a lower surface, and may be coupled to the upper surface of the bottom cover 13 of the housing 10.

The housing 10 may be an outer case of the heat exchanger heat exchanger 1, and the air guide 200 may be an inner case of the heat transfer heat exchanger 1. Internal components such as the heat exchange unit 30 and the flow path guide 40 may be located inside the air guide 200.

7 to 11, the air guide 200 may have a rectangular parallelepiped or a cube shape having an open lower surface. The air guide 200 may have a shape obtained by cutting one vertical edge from the shape.

For example, the air guide 200 may have a shape in which a vertical edge of the outside air space 53 is cut. Accordingly, the outside air space 53 may be located outside the air guide 200, and the ventilation space 51, the exhaust space 52, and the air supply space 54 may be located inside the air guide 200. have.

The lower end of the circumferential surface of the air guide 200 may be in contact with the inner bottom surface of the housing 10. That is, the lower end of the circumferential surface of the air guide 200 may contact the upper surface of the bottom cover 13. In addition, as described above, the outer surface of the air guide 200 may contact the inner surface of the housing 10. That is, the outer surface of the air guide 200 may contact the inner surface of the side cover 12.

Side surfaces of the air guide 200 may include a plurality of holes corresponding to the ventilation port 15, the exhaust port 16, the external device 17, and the air supply device 18. Depending on the shape of the air guide 200, the number of the plurality of holes may vary.

For example, the side of the air guide 200 has a sub-ventilation opening 201 coinciding with the ventilation opening 15, a sub-exhaust opening 202 coinciding with the exhaust opening 16, and a sub-air supply opening matching the air supply 18. 203 may be formed. The outside air space 53 may be located outside the air guide 200 so that the sub outside air may not be provided.

The air guide 200 may form a bypass flow path 210. The bypass flow path 210 may mean a space between the first guide part 208 and the second guide part 209.

In detail, the first guide part 208 and the second guide part 209 may be elongated in a direction from the ventilation space 51 toward the exhaust space 52. In more detail, the first guide part 208 and the second guide part 209 may be formed parallel to the side of the outside air space 53 and the side of the air supply space 54 of the circumferential surface of the heat exchange unit 30.

The first guide part 208 and the second guide part 209 may be disposed to face each other. The first guide part 208 and the second guide part 209 may be spaced apart by a predetermined interval. In more detail, the distance between the first guide part 208 and the second guide part 209 is equal to the distance between the outside air space 53 side and the air supply space 54 side of the circumferential surface of the heat exchange unit 30. Or shorter than that.

The first guide part 208 and the second guide part 209 may protrude downward from the bottom of the air guide 200. In this case, the protruding height may coincide with the distance between the bottom surface of the air guide 200 and the top surface of the upper plate 35. Accordingly, bottom surfaces of the first guide part 208 and the second guide part 209 may be in contact with the upper surface of the upper plate 35 of the heat exchange unit 30.

In other words, the first guide part 208 and the second guide part 209 protrude downwardly from other areas on the lower surface of the upper plate 200a (see FIG. 10) forming the upper part of the air guide 200. , The upper surface of the heat exchange unit 30 is in contact. The other lower surface of the upper plate 200a may have a groove shape by the first guide part 208 and the second guide part 209. The bypass flow path 210 may be formed between the first guide part 208 and the second guide part 209, and the air supply blower may be disposed in the air supply space 54 such that the air supply blower 18b is disposed. A seating portion 207 may be formed. At this time, the air supply blower 18b may be disposed to be spaced apart from the bottom surface of the air supply blower seat 207 by a predetermined distance.

The bypass flow path 210 may be an inner passage surrounded by a bottom surface of the air guide 200, a surface of the first and second guide parts 208 and 209 facing each other, and an upper surface of the upper plate 35. As a result, the air flowing into the bypass flow path 210 may pass through a passage formed by the first guide part 208, the second guide part 209, and the upper plate 35. At the same time, the first guide part 208 and the second guide part 209 serve as a barrier to prevent the outdoor air flowing into the outside air space 53 and the air supply space 54 from entering the bypass flow path 210. Can be done.

The flow path guide 40 is disposed in the ventilation space 51 to guide the movement direction of the indoor air flowing from the sub-ventilation opening 201. The flow path guide mounting groove 206 may be formed on the surface of the lower surface of the upper plate 200a in which the flow path guide 40 is disposed so as to be recessed upward than other areas so that the top surface of the flow path guide 40 is coupled.

The flow guide 40 may include a first flow guide body 44 facing the heat exchange unit 30, and a second flow guide body 47 facing the bypass flow path 210. In addition, a first opening 46 may be formed in the first flow guide body 44, and a second opening 48 may be formed in the second flow guide body 47. The first opening 46 and the second opening 48 may be provided with a louver 45 for selectively opening and closing the first opening 46 or the second opening 48, respectively, according to rotation. Therefore, the indoor air introduced from the sub-ventilator 201 may selectively flow to the heat exchange unit 30 or the bypass flow path 210 according to the rotation of each louver 45.

On the other hand, in the area corresponding to the ventilation space 51 of the bottom surface of the bypass flow path 210, that is, the lower surface of the upper plate 200a, a flow path guide support part protruding downward from the bottom surface to support the flow path guide 40 ( 212). The protruding height of the flow guide support 212 may correspond to the protruding heights of the first guide part 208 and the second guide part 209. The flow path guide supporter 212 supports the top surface of the flow path guide 40 to space the flow path guide 40 from the bottom surface of the bypass flow path 210. Therefore, the bypass flow path 210 may be shielded by the second flow guide body 47, and may selectively communicate with the ventilation space 51 only through the second opening 48.

Hereinafter, the structure of the air guide 200 will be described.

Air guide 200 can be manufactured by injection molding is easy to manufacture. The upper air guide 200 has the advantage that it is possible to implement the bypass flow path 210, the guide of the heat exchange unit 30, the compartment of the inner space of the housing 10 without any configuration.

The air guide 200 includes the first plate 281, the second plate 282, the third plate 283, and the fourth plate 284 to form side surfaces of the air guide 200 along a clockwise direction. It may include. In addition, an upper plate 200a may be disposed on the first to fourth plates 281, 282, 283, and 284. That is, it may be understood that the first to fourth plates 281, 282, 283, and 284 extend downward from four sides of the rectangular upper plate 200a to form side surfaces of the air guide 200. Therefore, components for ventilation may be disposed inside the first to fourth plates 281, 282, 283, and 284, respectively.

The sub-ventilation opening 201 and the sub air supply opening 203 are formed in the 1st plate 281. The first plate 281 may form one side surface of the air supply space 54 and the ventilation space 51. The second plate 282 may form the other side of the ventilation space 51. A sub exhaust port 202 is formed in the third plate 283. The third plate 283 may form one side of the exhaust space 52. The fourth plate 284 may form the other side of the exhaust space 52 and the other side of the air supply space 54.

In other words, the air supply space 54 is partitioned from other regions by one side of the first plate 281, the fourth plate 284, and the heat exchange unit 30. In addition, the ventilation space 51 is partitioned from the other region by the first plate 282, the second plate 282, and the other one side of the heat exchange unit 30. In addition, the exhaust space 52 is partitioned from the other region by another side of the third plate 283, the fourth plate 284, and the heat exchange unit 30. In the above-described configuration, an area cut from one vertical edge may be formed by making the lengths of the second plate 282 and the third plate 283 smaller than the lengths of the first plate 281 and the fourth plate 284. Can be.

When the heat exchange unit 30 is disposed at the center of the air guide 200, the air supply fan 18b is disposed in the air supply space 54, and the flow path guide 40 is provided in the ventilation space 51. Is disposed, and the exhaust blower 16b may be disposed in the exhaust space 52. In addition, the filter 31, 32, 33 is disposed on each side of the heat exchange unit 30 as described above.

In addition, the air guide 200 is protruded inward from the inner surface of the air guide 200 is coupled to the outer surface of the heat exchange unit 30, partition section 220 for partitioning the inner space of the air guide 200 into four areas, 240, 250, 230).

In detail, the air guide 200 includes a first compartment 220 protruding inwardly from the inner surface of the first plate 281, and a second compartment 240 protruding inwardly from the inner surface of the second plate 282. And a third compartment 250 protruding inward from the inner surface of the third plate 283, and a fourth compartment 230 protruding inward from the inner surface of the fourth plate 284. The first to fourth compartments 220, 240, 250, and 230 may be coupled to four corner regions of the rectangular heat exchange unit 30. That is, grooves to which four corners of the heat exchange unit 30 are coupled may be formed in the first to fourth compartments 220, 240, 250, and 230. Here, the grooves to which the four corners of the heat exchange unit 30 are coupled may be formed at inner ends of the first to fourth compartments 220, 240, 250, and 230 protruding inwardly from each plate.

In detail, the first compartment 220 protrudes inward from the inner surface of the first plate 281 and is disposed between the air supply space 54 and the ventilation space 51. The first compartment 220 partitions the air supply space 54 and the ventilation space 51. A first heat exchange unit accommodating groove 224 may be formed in the first compartment 220 to accommodate the first edge of the heat exchange unit 30. The first heat exchange unit accommodating groove 224 may be recessed toward the outside at the inner end of the first compartment 220.

The first filter accommodating groove 223 is formed on the surface disposed in the air supply space 54 among the inner surfaces of the first compartment 220, which is recessed in comparison with other regions from the inner surface. The first filter accommodating groove 223 may accommodate one side of the third filter 33 disposed in the air supply space 54. In addition, a second filter accommodating groove 222 is formed in the inner surface of the first compartment 220 disposed in the ventilation space 51, which is recessed in comparison with other regions from the inner surface. The second filter accommodating groove 222 may accommodate one side of the first filter 32 disposed in the ventilation space 51. The first flow path guide accommodation groove 221 which accommodates one side of the flow path guide 40 in an area of the inner surface of the first compartment 220 disposed in the ventilation space 51 and spaced apart from the second filter accommodation groove 222. ) Is formed. The first flow path guide receiving groove 221 may be disposed closer to the sub-ventilation opening 201 than the second filter receiving groove 222.

The first filter accommodating groove 223, the second filter accommodating groove 222, the first heat exchange unit accommodating groove 224, and the first channel guide accommodating groove 221 are respectively upward from the lower surface of the first compartment 220. It may extend toward the lower surface of the upper plate (200a).

The second compartment 240 protrudes inward from the inner surface of the second plate 282 to be between the ventilation space 51 and the outer region of the air guide 200. Here, the outer region of the air guide 200 may be an area facing the inner space of the air guide 200 on the basis of the region cut from one vertical edge of the air guide 200. Therefore, the second compartment 240 may also be understood as partitioning the ventilation space 51 and the outside air space 53.

A second heat exchange unit accommodating groove 248 may be formed in the second compartment 240 to accommodate the second edge of the heat exchange unit 30. The second heat exchange unit accommodating groove 248 may be recessed toward the outside at the inner end of the second compartment 240.

A third filter accommodating groove 244 recessed outward from the inner surface of the second compartment 240 in the ventilation space 51 may be formed on the surface disposed in the ventilation space 51. The third filter accommodating groove 244 may accommodate the other side surface of the first filter 32 disposed in the ventilation space 51. Accordingly, one side of the first filter 31 is coupled to the second filter accommodating groove 222, and the other side of the first filter 31 is firmly fixed in the air guide 200. Can be. The second filter accommodating groove 222 and the third filter accommodating groove 244 may be disposed to face each other.

The second flow path guide accommodation groove 246 accommodates the other side surface of the flow path guide 40 in a region disposed in the ventilation space 51 of the second compartment 240 and spaced apart from the third filter accommodation groove 244. ) May be formed. The second flow path guide receiving groove 246 may be disposed closer to the sub-ventilation opening 201 than the third filter receiving groove 244. Accordingly, the flow guide 40 has one side coupled to the first flow guide receiving groove 221 and the other side coupled to the second flow guide receiving groove 246 to be firmly fixed in the air guide 200. Can be. The first channel guide receiving groove 221 and the second channel guide receiving groove 246 may be disposed to face each other.

A fourth filter accommodating groove 242 recessed outward from the inner surface of the second compartment 240 in the outer air space 53 may be formed on the surface disposed in the outside air space 53. One side of the second filter 31 disposed in the outside air space 53 is coupled to the fourth filter accommodation groove 242.

The third filter accommodating groove 244, the second channel guide accommodating groove 246, the second heat exchange unit accommodating groove 248, and the fourth filter accommodating groove 242 are respectively upward from the lower surface of the second compartment 240. It may extend toward the lower surface of the upper plate (200a).

The third compartment 250 protrudes inward from the inner surface of the third plate 283 to partition the exhaust space 52 and the outside air space 53. That is, the third compartment 250 is disposed between the exhaust space 52 and the outside air space 53. A third heat exchange unit accommodating groove 253 may be formed in the third compartment 250 to accommodate the third edge of the heat exchange unit 30. The third heat exchange unit accommodating groove 253 may be recessed toward the outside at the inner end of the third compartment 250.

A fifth filter accommodating groove 252 recessed outward from the inner surface of the third partition part 250 in the outer air space 53 is formed on the surface disposed in the outside air space 53. The fifth filter receiving groove 252 may be coupled to the other side of the second filter 31 disposed in the outside air space 53. Therefore, one side of the second filter 31 may be coupled to the fourth filter accommodating groove 242, and the other side of the second filter 31 may be coupled to the fifth filter accommodating groove 252 to be fixed inside the air guide 200. The fourth filter accommodating groove 242 and the fifth filter accommodating groove 252 may be disposed to face each other.

The third heat exchange unit accommodating groove 253 and the fifth filter accommodating groove 252 may respectively extend upward from the lower surface of the third compartment 250 to the lower surface of the upper plate 200a.

The fourth compartment 230 protrudes inward from the inner surface of the fourth plate 284 and is disposed between the exhaust space 52 and the air supply space 54. The fourth compartment 230 partitions the exhaust space 52 and the air supply space 54. A fourth heat exchange unit accommodating groove 231 may be formed in the fourth compartment 230 to accommodate the fourth edge of the heat exchange unit 30. The fourth heat exchange unit accommodating groove 232 may be recessed toward the outside at the inner end of the fourth compartment 230.

The sixth filter accommodating groove 232 is formed in the surface of the fourth compartment 230 disposed in the air supply space 54, which is recessed in comparison with other regions from the inner surface. The sixth filter accommodating groove 232 may accommodate the other side surface of the third filter 33 disposed in the air supply space 54. Therefore, one side of the third filter 33 may be coupled to the first filter accommodating groove 223, and the other side of the third filter 33 may be fixed to the inside of the air guide 200. . The first filter accommodating groove 223 and the sixth filter accommodating groove 232 may be disposed to face each other.

The sixth filter accommodating groove 232 and the fourth heat exchange unit accommodating groove 231 may respectively extend upward from the lower surface of the fourth compartment 230 to the lower surface of the upper plate 200a.

Meanwhile, when the lower surface of the first guide portion 208 and the lower surface of the second guide portion 209 are referred to as the lower surface of the upper plate 200a, between the first guide portion 208 and the second guide portion 209. As described above, the bypass passage 210 may be formed to be recessed upward from the lower surface of the upper plate 200a. In addition, the bottom surface of the air supply space 54 disposed outside the first guide part 208 may also be formed to be recessed upward more than the bottom surface of the first guide part 208.

Meanwhile, in the present specification, the first to sixth filter accommodation grooves 223, 222, 244, 242, 252 and 232, the first to fourth heat exchange unit accommodation grooves 224, 248, 253 and 231, and the first and The two-flow guide receiving grooves 221 and 246 are indicated by an ordinal number in front of the name for convenience of explanation, but in the case of the groove for accommodating the filter in the inner surface of each compartment, the filter accommodating groove and the heat exchange unit for the heat exchange unit In the case of the receiving groove, the groove housing the euro guide can be named unified as the euro guide receiving groove, the ordinal puts out that there is no meaning other than to distinguish the difference.

Therefore, according to the air guide 200 according to the present embodiment, between the ventilation space 51 and the air supply space 54 by the first to fourth compartments 220, 240, 250, and 230, the air supply space 54 and There is an advantage that can be partitioned between the exhaust space 52, between the exhaust space 52 and the outside air space 53, between the outside air space 53 and the ventilation space 51.

In addition, the grooves for accommodating the internal parts of the air guide 200 are provided on the inner surfaces of the first to fourth compartments 220, 240, 250, and 230, respectively, so that the components can be easily arranged and assembled to produce efficiency. This has the advantage of getting better.

12 is a cross-sectional view showing the air flow direction in the air guide according to an embodiment of the present invention.

Referring to FIG. 12, the indoor air sucked from the ventilation port 14 by the operation of the exhaust blower 16b as described above is discharged through the heat exchange unit 30 or the bypass flow path 210 to the exhaust port 16. Can be.

In addition, outdoor air sucked from the external device 17 by the operation of the air supply fan 18b may pass through the heat exchange unit 30 and be discharged to the air supply device 18.

Therefore, a curved surface may be formed on the inner surface of the air guide 200 according to the present embodiment for the smooth flow of indoor or outdoor air.

In detail, between the inner surface of the fourth compartment 230 disposed in the air supply space 54 and the inner surface of the fourth plate 284, the inner surface of the fourth compartment 230 disposed in the exhaust space 52 and the fourth surface. Curved surfaces 271, 272, 273, 274 connecting the respective inner surfaces between the inner surface of the plate 284 and the inner surface of the first compartment 281 and the inner surface of the first plate 281 disposed in the air supply space 54. ) May be formed.

The first curved surface 271 is formed between the inner surface of the fourth compartment 230 and the inner surface of the fourth plate 284 among the inner surfaces of the exhaust space 52. An inner surface of the first curved surface 271 has a constant curvature, and connects the inner surface of the fourth compartment 230 with the inner surface of the fourth plate 284. The second curved surface 272 is formed between the inner surface of the third compartment 250 and the inner surface of the third plate 283 among the inner surfaces of the exhaust space 52. The second curved surface 272 has a constant curvature and connects the inner surface of the third compartment 250 and the inner surface of the third plate 283.

Therefore, when the indoor air passing through the bypass flow path 210 or the heat exchange unit 30 flows into the exhaust space 52, the exhaust fan 16b is exhausted by the first curved surface 271 and the second curved surface 272. Or the movement can be guided to the vent. That is, when the indoor air flows into the exhaust space 52 by the suction force of the exhaust blower 16b, the air may flow more smoothly by the first curved surface 271 and the second curved surface 272. .

The third curved surface 273 is formed between the inner surface of the fourth compartment 230 and the inner surface of the fourth plate 284 among the inner surfaces of the air supply space 54. An inner surface of the third curved surface 273 has a constant curvature, and connects the inner surface of the fourth compartment 230 with the inner surface of the fourth plate 284. Furthermore, a fourth curved surface 274 is formed between the inner surface of the first compartment 220 and the inner surface of the first plate 281 among the inner surfaces defining the air supply space 54. An inner surface of the fourth curved surface 274 has a constant curvature, and connects the inner surface of the first compartment 220 with the inner surface of the first plate 281.

Therefore, when the outdoor air passing through the heat exchange unit 30 flows into the air supply space 54, the outdoor air is blown to the air supply fan 18b or the external device 17 by the third curved surface 273 and the fourth curved surface 274. Movement can be guided. That is, when the outdoor air flows into the air supply space 54 by the suction force of the air supply fan 18b, the air flows smoothly by the third curved surface 273 and the fourth curved surface 274.

13 is a cross-sectional view illustrating a connection state of wires in an air guide according to an exemplary embodiment of the present invention.

10 and 13, the exhaust fan 16b and the air supply fan 18b may be electrically connected to the control unit 59, respectively, to transmit and receive a control command for ventilation. Accordingly, the control unit 59 may be electrically connected to the exhaust blower 16b or the air supply blower 18b through wiring to provide power for driving or to transmit and receive a control command.

In detail, the exhaust blower 16b and the controller 59 may be electrically connected to each other through the first wiring 301. In addition, the air supply fan 18b and the controller 59 may be electrically connected to each other through the second wiring 302.

Meanwhile, the air guide 200 according to the present embodiment may be provided with one or more wiring grooves 235, 225, and 249 for fixing the first wiring 301 and the second wiring 302 in an internal space. . The wiring grooves 235, 225, and 249 may accommodate wirings therein to prevent the wirings from tangling with each other or coming into contact with other components in the air guide 200.

In detail, a first wiring groove 235 is formed on the bottom surface of the fourth compartment 230 to be recessed from the bottom surface to accommodate the first wiring 301. A second wiring groove 225 is formed on the bottom surface of the first compartment 220 to be recessed from the bottom surface to accommodate the first wiring 301 and the second wiring 302. A third wiring groove 249 is formed on the bottom surface of the second compartment 240 to be recessed from the bottom surface to accommodate the first wiring 301 and the second wiring 302.

Accordingly, one end of the first wiring 301 is coupled to the exhaust blower 16b to be accommodated in the first wiring groove 235, the second wiring groove 225, and the third wiring groove 249, thereby providing an air guide 200. ) May be fixed in part and the other end may be coupled to the controller 59.

In addition, one end of the second wiring 302 is coupled to the air supply fan 18b and accommodated in the second wiring groove 225 and the third wiring groove 249, and a part of the second wiring 302 is fixed in the air guide 200. It can be coupled to the control unit 59.

Since the wiring grooves 235, 225, and 249 are formed in the lower surface of the partitions 230, 220, and 240 disposed in the edge region relatively in the inner space of the air guide 200, the first and second wirings 301, 302 may be prevented from contacting other configurations. In addition, the wiring grooves 235, 225, and 249 have widths corresponding to the cross-sectional areas of the received wirings, so that the wirings may be firmly fixed in the air guide 200.

Meanwhile, the wiring grooves 235, 225, and 249 may have one or more straight portions and one or more curved portions according to the installation direction of the wirings.

Hereinafter, the operation of the total heat exchanger 1 according to the present embodiment will be described.

The controller 59 may control the flow path guide 40 to perform the electrothermal exchange mode or the bypass mode.

In the heat exchange mode, the control unit 59 rotates the louver so that the second opening 48 is shielded, and rotates the louver 45 so that the first opening 46 is opened. Thus, the indoor air sucked into the ventilation opening 15 by the operation of the exhaust blower 16b may pass through the heat exchange element 38 of the heat exchange unit 30 and exchange heat with the outdoor air, and the exhaust opening 16 Can be discharged.

In the bypass mode, the control unit 59 rotates the louver 45 so that the second opening 48 is opened, and rotates the louver 45 so that the first opening 46 is shielded. Thus, the indoor air sucked into the ventilation port 15 by the operation of the exhaust blower 16b may flow into the bypass flow path 210 of the air guide 200 and may be discharged to the exhaust port 16. .

Bypass mode can be implemented when it is necessary to exhaust outdoor air rapidly. Alternatively, it may be performed when heat exchange with outdoor air is unnecessary.

In the above description, all elements constituting the embodiments of the present invention are described as being combined or operating in combination, but the present invention is not necessarily limited to the embodiments. That is, within the scope of the present invention, all of the components may be selectively operated in combination with one or more. In addition, the terms such as 'comprise', 'comprise' or 'having' described above mean that a corresponding component may be included unless otherwise stated, and thus, other components are excluded. It should be construed that it may further include other components instead. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms used generally, such as terms defined in a dictionary, should be interpreted to coincide with the contextual meaning of the related art, and shall not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

Claims (13)

A housing having a ventilation opening and an air supply port formed on one side thereof, and an external device and an exhaust port formed on the other side surface opposite to the one side surface;
An air guide disposed in the housing and having holes formed to face the ventilation holes, the air supply holes, the outer parts, and the exhaust holes, respectively; And
A heat exchange unit accommodated in the air guide and including a total heat exchange element for heat-exchanging the air sucked into the external air and the air sucked into the ventilation port,
The air guide protrudes from an inner surface of the air guide is coupled to each of the outer surface of the heat exchange unit, the heat exchanger including a partition for partitioning the inner space of the air guide into four areas.
The method of claim 1,
The compartment,
A first compartment protruding from an inner surface of the first plate forming a first side surface of the air guide and coupled to a first edge of the heat exchange unit;
A second compartment protruding from an inner surface of a second plate forming a second side surface of the air guide and coupled to a second edge of the heat exchange unit;
A third compartment protruding from an inner surface of a third plate forming a third side surface of the air guide and coupled to a third edge of the heat exchange unit; And
And a fourth compartment protruding from an inner surface of the fourth plate forming the fourth side surface of the air guide and coupled to a fourth edge of the heat exchange unit.
The method of claim 2,
Heat transfer in which heat exchange unit accommodating grooves are formed that are recessed than other regions in the regions facing the edges of the heat exchange unit among the inner surfaces of the first compartment, the second compartment, the third compartment, and the fourth compartment. Exchanger.
The method of claim 2,
The air guide,
An air supply space partitioned from the other area by the first compartment, the first side surface of the heat exchange unit, and the fourth compartment, and communicating with the air supply port;
A ventilation space partitioned from the other area by the first compartment, the second side surface of the heat exchange unit, and the second compartment, and communicating with the vent;
An outside air space partitioned from the other area by the second compartment, the third side surface of the heat exchange unit, and the third compartment, and communicating with the external device; And
And an exhaust space defined by the third compartment, the fourth side surface of the heat exchange unit, and the fourth compartment, and an exhaust space communicating with the exhaust port.
The method of claim 4, wherein
A first filter facing the second side and disposed in the ventilation space;
A second filter facing the third side and disposed in the outside air space; And
And a third filter facing the first side and disposed in the air supply space.
The method of claim 5,
The air guide,
First filter accommodating grooves disposed on inner surfaces of the first compartment and the second compartment to accommodate both side surfaces of the first filter;
A second filter accommodating groove disposed on the inner surfaces of the second compartment and the third compartment to accommodate both side surfaces of the second filter; And
And a third filter accommodating groove disposed on the inner surfaces of the first compartment and the fourth compartment to accommodate both side surfaces of the third filter.
The method of claim 4, wherein
The air guide is provided with a bypass flow passage disposed above the heat exchange unit to communicate the ventilation port and the exhaust port,
And a flow path guide for selectively flowing air to the bypass flow path or the heat exchange unit in the ventilation space.
The method of claim 7, wherein
An inner surface of the first compartment and an inner surface of the second compartment are provided with flow path guide receiving grooves in which both side surfaces of the flow path guide are coupled.
The method of claim 4, wherein
A curved surface is formed between an inner surface of the fourth compartment and an inner surface of the fourth plate, an inner surface of the third compartment, and an inner surface of the third plate among the inner surfaces that partition the exhaust space.
The heat exchanger of claim 4, wherein a curved surface is formed between an inner surface of the fourth compartment and an inner surface of the fourth plate and an inner surface of the first plate and an inner surface of the first plate.
The method of claim 4, wherein
An exhaust blower for flowing air to the exhaust port is disposed in the exhaust space;
And an air supply blower configured to supply air to the air supply port in the air supply space.
The method of claim 10,
A control unit disposed in the housing and electrically connected to the exhaust blower and the air supply blower,
The exhaust blower is electrically connected to the control unit through a first wiring,
The air supply blower is an electric heat exchanger is electrically connected to the control unit through a second wiring. The method of claim 11,
A first wiring groove is formed on the bottom surface of the fourth compartment to be recessed than other regions to accommodate the first wiring.
A second wiring groove is formed on the lower surface of the first compartment to be recessed than other regions to accommodate the first wiring and the second wiring.
And a third wiring groove formed on the bottom surface of the second compartment to be recessed than other regions to accommodate the first wiring and the second wiring.
The method of claim 12,
And the first wiring groove, the second wiring groove and the third wiring groove are relatively close to the edge region of the air guide.

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