KR102509332B1 - Total heat exchanger - Google Patents

Abstract

A total heat exchanger according to an embodiment of the present invention includes a housing; heat exchange unit; upper air guide; barrier; and a flow path conversion damper.
The housing may have a ventilation hole and a supply hole formed on one side, and an outside hole and an exhaust hole formed on the other side opposite to the one side. The heat exchange unit may include a total heat exchange element accommodated inside the housing and exchanging heat between the air sucked into the outside vent and the air sucked through the ventilation hole. The upper air guide may form a bypass passage that communicates the ventilation hole and the exhaust hole on an upper side of the heat exchange unit. The barrier may partition a space communicating with the ventilation hole vertically so that an upper space communicates with the bypass passage and a lower space communicates with the total heat exchange element.
The passage conversion damper may communicate the ventilation hole and the upper space or the lower space of the barrier. The flow path conversion damper includes a shield plate rotatable around a rotation axis; and a duct part penetrating the barrier, having one end connected to the shielding plate, and rotating together with the shielding plate.

Description

Total heat exchanger {TOTAL HEAT EXCHANGER}

The present invention relates to a total heat exchanger, and more particularly, to a total heat exchanger provided with a bypass passage.

In general, a ventilation unit is installed and used inside a building to discharge polluted indoor air to the outside and supply new outside air to the indoor space.

In the case of public facilities such as school classrooms and hospital rooms, or single households such as apartments and villas, the indoor air can be rapidly polluted, so it is essential to use a ventilation device. reducing pollution.

Particularly, in recent years, many heat recovery type ventilators equipped with heat exchange elements capable of minimizing a temperature difference by recovering heat from each other when exchanging indoor air and outdoor air have been installed.

On the other hand, from mid-March to mid-June and from mid-September to mid-November (commonly referred to as the middle period) in Korea, cooling due to total heat exchange ventilation. Since the heating load tends to increase compared to simple outside air intake or general (bypass) ventilation, general (bypass) ventilation through simple outdoor air intake can save cooling and heating energy during this intermediate period rather than total heat exchange ventilation.

In particular, the outdoor air cooling through the introduction of outside air is very effective in school classrooms or hospital rooms that use a lot of cooling and heating energy, so that efficient cooling and heating energy can be reduced.

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

One problem to be solved by the present invention is to provide a total heat exchanger that can easily switch between a total heat exchange mode and a bypass mode.

A total heat exchanger according to an embodiment of the present invention includes a housing; heat exchange unit; upper air guide; barrier; and a flow path conversion damper.

The housing may have a ventilation hole and a supply hole formed on one side, and an outside hole and an exhaust hole formed on the other side opposite to the one side. The heat exchange unit may include a total heat exchange element accommodated inside the housing and exchanging heat between the air sucked into the outside vent and the air sucked through the ventilation hole. The upper air guide may form a bypass passage that communicates the ventilation hole and the exhaust hole on an upper side of the heat exchange unit. The barrier may partition a space communicating with the ventilation hole vertically so that an upper space communicates with the bypass passage and a lower space communicates with the total heat exchange element.

The passage conversion damper may communicate the ventilation hole and the upper space or the lower space of the barrier. The flow path conversion damper includes a shield plate rotatable around a rotation axis; and a duct part penetrating the barrier, having one end connected to the shielding plate, and rotating together with the shielding plate.

The duct unit may have a curved pipe shape having a predetermined curvature.

A center of curvature of the duct unit may be the rotation axis.

The flow path conversion damper may be installed in the ventilation hole.

In the bypass mode, the shielding plate may shield the ventilation hole, and the duct unit may communicate the ventilation hole with a space above the barrier.

In the total heat exchange mode, the shielding plate opens the ventilation hole, and the other end of the duct part opposite to the half part may be shielded.

In the total heat exchange mode, the other end of the duct unit may come into contact with the inner surface of the upper air guide to be shielded.

The total heat exchanger according to an embodiment of the present invention may further include a drive motor for rotating the rotating shaft. The driving motor may be installed in the upper air guide.

A duct guide unit may be provided in the barrier, and the duct unit may be inserted into the duct guide unit.

One end of the duct guide part may be connected to the barrier, and the other end may be spaced apart from an inner surface of the upper air guide.

The shielding plate may be positioned below the barrier. The other end of the duct unit may be located above the lower surface of the barrier. The other end of the duct unit may be located in the upper space of the barrier.

The heat exchange unit may further include an upper plate partitioning the total heat exchange element and the bypass passage, and the total heat exchange element may be provided below the upper plate.

The barrier may be disposed to contact the upper plate.

The total heat exchanger according to an embodiment of the present invention may further include a frame disposed between the ventilation hole and the heat exchange unit, having the barrier therein, and having a suction hole communicating with the ventilation hole. The passage conversion damper may be installed in the inlet.

In the total heat exchange mode, the shielding plate may open the inlet, and the other end of the duct part opposite to the general part may come into contact with the inner surface of the frame to be shielded.

According to a preferred embodiment of the present invention, the total heat exchange mode and the bypass mode can be easily switched by the passage conversion damper.

In addition, since the shielding plate and the duct part rotate together, the total heat exchange mode and the bypass mode can be easily switched by controlling only a single rotating shaft.

In addition, there are advantages in that a bypass passage can be formed, a heat exchange unit guide function, and a division of the inner space of the housing can be performed by the upper air guide, which is a single component.

In addition, since an opening is formed in the bottom cover, the user can easily install or separate the heat exchange unit from the total heat exchanger installed on the ceiling.

In addition, since the bypass passage is located above the heat exchange unit, the user can easily install or separate the heat exchange unit from the total heat exchanger installed on the ceiling.

1 is a perspective view showing the appearance of a total heat exchanger according to an embodiment of the present invention.
FIG. 2 is a perspective view of the total heat exchanger of FIG. 1 with the top cover removed.
3 is a perspective view showing the upper air guide removed from the total heat exchanger of FIG. 2;
4 is an exploded perspective view of a total heat exchanger according to an embodiment of the present invention.
5 is a plan view of the total heat exchanger of FIG. 3;
6 is a perspective view of a heat exchange unit.
7 is a bottom view of the upper air guide.
8 is a view for explaining the configuration of the upper air guide.
9 is a perspective view of a passage conversion damper.
FIG. 10 is a cutaway view of the flow path conversion damper of FIG. 9 .
11 is a cross-sectional view of a flow path guide in total heat exchange mode.
12 is a cross-sectional view of a flow guide in a bypass mode.
13 is a cross-sectional view along line AA of FIG. 2 in total heat exchange mode.
14 is a cross-sectional view along line AA of FIG. 2 in bypass mode.
15 is a control block diagram of a total heat exchanger according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with drawings.

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

Referring to FIG. 1 , a total heat exchanger 1 according to an embodiment of the present invention may include a housing 10. The housing 10 may have a box shape, and an accommodation space in which internal components such as the heat exchange unit 30 may be installed may be formed.

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 .

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.

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 replacing internal parts. Of course, the top cover 11 may also be integrally formed with the side cover 12 .

The side cover 12 may be formed integrally, or may be formed by combining two or more side covers.

An outdoor outlet 17 through which outdoor air (OA) is sucked and a ventilation hole 15 (see FIG. 4 ) through which return air (RA) is sucked may be formed in the side cover 12 . In addition, an exhaust port 16 through which exhaust air (EA) is discharged and an air supply port 18 (refer to FIG. 4 ) through which supply air (SA) is discharged may be formed in the side cover 12 .

Outdoor air may be outdoor air. Outdoor air is generally cold and may have a low carbon dioxide content. On the other hand, the temperature of indoor air may be relatively high due to the body temperature of people who are active indoors. Also, the carbon dioxide content can be high due to people's breath.

That is, the total heat exchanger 1 may discharge indoor air to the outdoors through the vent 15 and the exhaust vent 16 and supply fresh outdoor air to the indoor through the outdoor vent 17 and the air supply vent 18.

An outside vent 17 and an exhaust vent 16 may be formed on one surface of the side cover 12, and a vent 15 and an air supply vent 18 may be formed on the other surface opposite to the one surface.

The vent 15 may be disposed to face the outside vent 17, and the exhaust vent 16 may be disposed to face the air supply vent 18.

A damper may be installed in at least one of the vent 15, the exhaust vent 16, the outdoor vent 17, and the air supply vent 18. For example, a ventilation damper 15a may be installed in the ventilation hole 15 . An exhaust damper 16a may be installed in the exhaust port 16 . An outside air damper 17a may be installed in the outside air unit 17 . An air supply damper (18a) may be installed in the air supply port (18).

It is also possible to install a flow path conversion damper 41 to be described later in the ventilation hole 15 .

At this time, it is preferable that the dampers installed in the outdoor vents 17 and vents 15 through which air is sucked are actuator dampers. The electric damper may include a vane that adjusts an opening degree of a passage through which air flows according to a rotational angle, and a damper actuator that operates the vane. The controller 59 may control the opening degree of each damper by operating the damper actuator. An increase in the opening degree of the damper may mean that the damper is opened. A decrease in the opening degree of the damper 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 may be controlled. In this way, intake of air through the outside vent 17 or the vent 15 can be controlled.

It is preferable that the dampers installed on the exhaust port 16 and the air supply port 18 through which air is discharged are Back Draft Dampers (BDDs). Therefore, it is possible to prevent air from being sucked through the exhaust port 16 and the air supply port 18 .

Meanwhile, the controller 59 may be installed in the housing 10 . In more detail, the control unit 59 may be installed on the side cover 12 . An opening for installing a control unit may be formed in the side cover 12, and the control unit 59 may be installed in the opening for installing the control unit. The controller 59 may be installed to protrude toward the inside of the housing 10 .

The control unit 59 may be installed on a side of the side cover 12 on which the vent 15, the exhaust vent 16, the outside vent 17, and the air supply vent 18 are not formed. For example, when the ventilation hole 15 and the air supply hole 18 are formed on the rear surface of the housing 10 and the outside air hole 17 and the exhaust hole 16 are formed on the front surface of the housing 10, the control unit 59 may be installed on the right or 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 may control overall operation of the total heat exchanger 1.

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

Referring to FIG. 2 , the total heat exchanger 1 according to an embodiment of the present invention may include an upper air guide 20.

The upper air guide 20 serves to form a bypass passage 27 (see FIG. 8) so that indoor air sucked into the ventilation hole 15 bypasses the heat exchange unit 30 and is discharged through the exhaust hole 16. can do. This will be described in detail later.

The upper air guide 20 may be made of various materials, but is preferably made of expandable polystyrene (EPS). Expanded polystyrene (EPS) is lightweight and has excellent thermal insulation, sound insulation, and buffering properties, so it maintains thermal insulation inside the total heat exchanger (1), reduces noise generated from blowers (16b, 18b, see FIG. 4), etc., and There is an advantage that can protect the internal components of the total heat exchanger (1) from the impact of.

The upper air guide 20 may be manufactured as a single injection molded material and may be manufactured in various shapes.

An upper surface of the upper air guide 20 may come into contact with a lower surface of the top cover 11 . That is, the upper surface of the upper air guide 20 may coincide with the upper surface of the side cover 12 .

At least a part of the side surface of the upper air guide 20 may come into contact with the inner surface of the side cover 12 .

The total height of the upper air guide 20 may be the same as 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 upper air guide removed from the total 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 of the total heat exchanger of FIG.

3 and 5, the total heat exchanger 1 according to an embodiment of the present invention may include a heat exchange unit 30. The heat exchange unit 30 may mutually exchange heat between outdoor air and indoor air.

The heat exchange unit 30 may have a substantially cuboid or regular hexahedron shape. The heat exchange unit 30 may be installed in the housing 10 . In more detail, the heat exchange unit 30 may be located below the upper air guide 20 .

The height of the heat exchange unit 30 may be lower than the height of the inner space of the housing 10 . This is to form the bypass passage 27 by positioning the upper air guide 20 above the heat exchange unit 30 .

The side of the heat exchange unit 30 may be installed at an angle rather than parallel to the side cover 12 of the heat exchange unit 30 . Preferably, the side of the heat exchange unit 30 may be disposed with the side cover 12 inclined at an angle of about 45°.

As the heat exchange unit 30 is installed obliquely, the inner space of the housing 10 has a ventilation space 51 communicating with the vent 15, an exhaust space 52 communicating with the exhaust vent 16, and an outside vent 17. It may include an external air space 53 communicated with and an air supply space 54 communicated with the air supply port 18 .

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 upper air guide 20 and the heat exchange unit 30 . Thus, a duct may be formed inside the housing 10 . In this case, the duct may refer to a passage through which the sucked air flows and is discharged.

The duct includes an outdoor-indoor duct through which outside air is taken in through an outside air vent (17) and air is discharged through an air supply hole (18) for supplying the outside air to the room, and indoor air is taken through a ventilation hole (15), An exhaust port 16 for exhausting indoor air to the outdoors may include an indoor-outdoor duct through which air is discharged.

The indoor/outdoor duct may include a ventilation space 51 and an exhaust space 52, and the outdoor/indoor duct may include an outdoor air space 53 and an air supply space 54.

Since the indoor-outdoor duct and the outdoor-indoor duct share the heat exchange unit 30, heat exchange between air flowing through each duct in the heat exchange unit 30 can occur. To this end, the outside vents 17 and the air supply vents 18 may be alternately disposed, and the ventilation inlets 15 and the exhaust vents 16 may be alternately disposed. That is, the heat exchange unit 30 may be disposed in an intersection area of an indoor-outdoor duct and an outdoor-indoor duct.

However, a flow path conversion damper 41 to be described later may be installed in the indoor-outdoor duct so that the air flowing through the indoor-outdoor duct bypasses the heat exchange unit 30 and is not heat-exchanged with outdoor air.

At least one filter 32 may be provided on the side of the heat exchange unit 30 . The filter 32 may be installed in contact with the heat exchange unit 30 or may be installed apart from each other.

The filter 32 may serve to filter foreign substances contained in the air and purify the air.

For example, filters 32 may be installed on 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 . Accordingly, indoor air sucked through the ventilation hole 15 may pass through the filter 32 installed on the side of the ventilation space 51 and be purified, and then introduced into the heat exchange unit 30 . In addition, outdoor air sucked in through the outdoor vent (17) is purified by the filter (32) installed on the side of the outdoor air space (53), introduced into the heat exchange unit (30), taken out from the heat exchanger (30), and air supply space (54). ) It can be purified again in the filter 32 installed on the side and discharged to the air supply port 18.

The filter 32 may be a variety of well-known filters such as a nonwoven fabric filter and a HEPA filter. Also, the plurality of filters 32 installed on each side of the heat exchange unit 30 may be different types of filters. For example, the filter 32 on the side of the air supply space 54 may be a HEPA filter, which is a high-clean filter, and the filter 32 on the side of the ventilation space 51 or the filter 32 on the side of the outdoor air space 53 may be a non-woven fabric filter. can

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 blower 16b may be installed to communicate with the ventilation port 15 and the exhaust port 16 . The exhaust blower 16b may suck indoor air through the ventilation hole 15 and discharge indoor air passing through the heat exchange unit 30 or the bypass passage 27 through the exhaust hole 16 .

The air supply blower (18b) may be installed to communicate with the outside outlet (17) and the air supply outlet (18). The air supply blower 18b may suck in outdoor air through the outdoor vent 17 and discharge the outdoor air passing through the heat exchange unit 30 through the air supply vent 18 .

The control unit 59 can turn on/off each of the exhaust blower 16b and the air supply blower 18b, and it is also possible to control the flow rate of air by controlling the operating frequency of each blower 16b and 18b.

The controller 59 may be installed in the outdoor space 53, but is not limited thereto. However, since the flow guide 40 is installed in the ventilation space 51, the exhaust blower 16b is installed in the exhaust space 52, and the air supply blower 18b is installed in the air supply space 54, the controller (59) is preferably installed in the outdoor space (53).

The total heat exchanger 1 according to an embodiment of the present invention may include a heating heater 34.

The heating heater 34 may be installed in the outdoor space 53 .

The heating heater 34 may heat outdoor air sucked into the outdoor vent 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 alone may not sufficiently warm it. Therefore, cold outdoor air is discharged through the air supply port 18, and the indoor temperature may be excessively low.

In order to prevent this, the outdoor air sucked through the outdoor vent 16 is primarily heated by the heating heater 34 and then heat exchanged with the indoor air in the heat exchange unit 30 so that the temperature of the air supplied to the air supply vent 18 is reduced. can keep warm.

The control unit 59 can control on/off of the heating heater 34, and it is also possible to adjust the temperature of the heating heater 34.

The total heat exchanger 1 according to this embodiment may include an air guide coupling part 19.

The upper air guide 20 may be coupled to the air guide coupling part 19 . In more detail, the housing coupling portion 29 (see FIG. 8) of the upper air guide 20 may be coupled to the air guide coupling portion 19.

The air guide coupling part 19 may be disposed between the exhaust space 52 and the air supply space 54. When the air guide coupling part 19 and the housing coupling part 29 are coupled, it can serve as a barrier dividing the exhaust space 52 and the air supply space 54.

A heat exchange unit guide part 19b may be formed in the air guide coupling part 19 . The heat exchange unit guide portion 19b may contact a vertical corner of the heat exchange unit 30 . In more detail, the heat exchange unit guide portion 19b may come into contact with the supporter 37 of the heat exchange unit 30 (see FIG. 6).

A depression 19a may be formed in the air guide coupling part 19 . The recessed portion 19a and the protruding portion 29a of the housing coupling portion 29 are formed to correspond to each other, so that the protruding portion 29a can be fitted into the recessed portion 19a.

The total heat exchanger 1 according to an embodiment of the present invention may include a flow guide 40.

The flow guide 40 may be installed in the ventilation space 51 . The flow guide 40 may be installed to contact the heat exchange unit 30 .

The flow path guide 40 may serve to guide indoor air sucked through the ventilation hole 15 to the heat exchange unit 30 or the bypass flow path 27 .

The detailed configuration and operation of the flow guide 40 will be described 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 . Accordingly, the shape of the opening 14 may be a square shape corresponding to the shape of the heat exchange unit 30 .

A door 14a capable of opening and closing the opening 14 may be provided on the bottom cover 13 .

In general, since the total heat exchanger 1 is installed on the ceiling of the room, it may be easy for the user to access from the lower side of the total heat exchanger 1. A user may install or remove the heat exchange unit 30 through the opening 14 by opening the door 14a. Accordingly, inspection, maintenance, and replacement of the heat exchange unit 30 may be facilitated.

Meanwhile, the total heat exchanger 1 according to an embodiment of the present invention may include various sensors. For example, the total heat exchanger 1 may include a temperature sensor 65, a carbon dioxide sensor 63, and a humidity sensor 64.

The temperature sensor 65 may include an outdoor temperature sensor 66 for measuring outdoor temperature and an indoor temperature sensor 67 for measuring indoor temperature.

The outdoor temperature sensor 66 may be installed in the outdoor unit 17 or the outdoor space 53 . The room temperature sensor 67 may be installed in the ventilation hole 15 or the ventilation space 51 .

The carbon dioxide sensor 63 may be installed in the ventilation hole 15 or the ventilation space 51 to detect the carbon dioxide content in indoor air.

The humidity sensor 64 may be installed in the outdoor vent 17 or the outdoor space 53 to detect the humidity of outdoor air.

The total heat exchanger 1 may further include additional sensors as needed in addition to the above sensors.

6 is a perspective view of a heat exchange unit.

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, indoor air and outdoor air may be heat exchanged. In more detail, a plurality of outside air guide layers and inside air guide layers may be stacked on the total heat exchange element 38 so as to cross each other. The outside air guide layer may communicate the outside air space 53 and the air supply space 54 , and the inside guide layer may communicate the ventilation space 51 and the exhaust space 52 .

Accordingly, the outdoor air sucked through the outdoor vents 17 flows into the outdoor air guide layer, and the indoor air sucked through the ventilation holes 15 flows into the inner guide layer so that heat can be exchanged with each other. In general, since indoor air is heated by people's body temperature and has a higher temperature than outdoor air, the temperature of outdoor air may rise due to the heat exchange.

Thereafter, the heat-exchanged indoor air may be discharged through the exhaust port 16 , and the heat-exchanged outdoor air may be discharged through the air supply port 18 . That is, warm outdoor air can be supplied to the room through the air supply port 18 .

As described above, at least one filter 32 for purifying air introduced into the total heat exchange element 38 may be provided on the side of the heat exchange unit 30 .

Upper plate 35 may be located on the upper side of the total heat exchange element (38). An upper surface of the upper plate 35 may be an upper surface of the heat exchange unit 30 .

The upper plate 35 may be positioned between the bypass passage 27 and the total heat exchange element 38, which will be described later. In more detail, the bypass flow path 27 may be located on the upper side of the upper plate 35, and the total heat exchange element 38 may be located on the lower side of the upper plate 35. That is, the upper plate 35 may partition the bypass flow path 27 and the total heat exchange element 38 .

Thus, the upper plate 35 can prevent air flowing through the bypass passage 27 from entering the total heat exchange element 38 in the bypass mode.

The lower plate 36 may be positioned below the total heat exchange element 38 . A bottom surface of the lower plate 36 may be a bottom surface of the heat exchange unit 30 .

The lower plate 36 may face the upper plate 35 .

A handle (not shown) may be provided on the lower surface of the lower plate 36 . As described above, the user can separate the heat exchange unit 30 through the opening 14 . At this time, since the bottom of the heat exchange unit 30 is immediately visible through the opening 14 when the door 14a is opened, the user can easily separate the heat exchange unit 30 by holding the handle.

The supporter 37 may be a vertical corner portion 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 come into contact with the unit guides 23a, 23b, and 23c of the upper air guide 20 (see FIG. 8). In addition, the supporter 37 may come into contact with the heat exchange unit guide part 19b of the air guide coupling part 19.

As described above, 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 regular hexahedral 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 three unit guides 23a, 23b, and 23c and the one heat exchange unit guide portion 19b are in contact with the four supporters 37, respectively. By doing so, it is possible to guide the heat exchange unit 30 to be installed in the correct position.

7 is a bottom view of the upper air guide, and FIG. 8 is a view for explaining the configuration of the upper air guide.

The housing 10 may be an outer case of the total heat exchanger 1, and the upper air guide 20 may be an inner case of the total heat exchanger 1. Internal devices such as the heat exchange unit 30 and the flow guide 40 may be located inside the upper air guide 20 .

Referring to FIGS. 7 and 8 , the upper air guide 20 may have a rectangular parallelepiped shape with an open lower surface. The upper air guide 20 may have a shape obtained by cutting one vertical corner from the above shape.

For example, the upper air guide 20 may have a shape in which a vertical corner on the outside air space 53 side is cut. Thus, the outside air space 53 can be located outside the upper air guide 20, and the ventilation space 51, the exhaust space 52, and the air supply space 54 are located inside the upper air guide 20. can do.

The lower end of the circumferential surface of the upper air guide 20 may come into contact with the inner bottom surface of the housing 10 . That is, the lower end of the circumferential surface of the upper air guide 20 may come into contact with the upper surface of the bottom cover 13 . In addition, as described above, the outer surface of the upper air guide 20 may come into contact with the inner surface of the housing 10 . That is, the outer surface of the upper air guide 20 may come into contact with the inner surface of the side cover 12 .

A plurality of holes corresponding to the vent 15, the exhaust vent 16, the outside vent 17, and the air supply vent 18 may be formed on the side surface of the upper air guide 20. Depending on the shape of the upper air guide 20, the number of the plurality of holes may vary.

For example, on the side of the upper air guide 20, there is a sub vent 25 that matches the vent 15, a sub vent 26 that matches the exhaust vent 16, and a sub air supply vent that matches the air supply vent 18. (28) can be formed. The outside air space 53 is located outside the upper air guide 20, so a sub outside air vent may not be provided.

The upper air guide 20 may form a bypass passage 27 .

The bypass passage 27 may refer to a space between the first guide part 27a and the second guide part 27a.

The first guide part 27a and the second guide part 27b may be formed long in a direction from the ventilation space 51 toward the exhaust space 52 . In more detail, the first guide part 27a and the second guide part 27b may be formed parallel to the outside air space 53 side and the air supply space 54 side surface of the circumferential surface of the heat exchange unit 30 .

The first guide part 27a and the second guide part 27b may be disposed to face each other. The first guide part 27a and the second guide part 27b may be spaced apart from each other by a predetermined interval. In more detail, the distance between the first guide part 27a and the second guide part 27b is 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 and It can be the same or shorter.

The first guide part 27a and the second guide part 27b may protrude from the lower surface of the upper air guide 20 . In this case, the height of the protrusion may match the distance between the lower surface of the upper air guide 20 and the upper surface of the upper plate 35 . Accordingly, bottom surfaces of the first guide portion 27a and the second guide portion 27b may come into contact with the upper surface of the upper plate 35 of the heat exchange unit 30 .

That is, the bypass passage 27 may be an internal passage surrounded by the lower surface of the upper air guide 20, the surfaces of the first and second guide parts 27a and 27b facing each other, and the upper surface of the upper plate 35. .

Thus, the air flowing into the bypass passage 27 can pass through the passage formed by the first guide part 27a, the second guide part 27b, and the upper plate 35.

At the same time, the first guide part 27a and the second guide part 27b play a role of a barrier preventing outdoor air flowing into the outside air space 53 and the air supply space 54 from flowing into the bypass passage 27. can be done

The upper air guide 20 may include at least one unit guide 23a, 23b, and 23c.

The unit guides 23a, 23b, and 23c may guide the heat exchange unit 30. As described above, the unit guides 23a, 23b, and 23c may come into contact with the supporter 37 of the heat exchange unit 30.

The upper air guide 20 may include a housing coupling part 29 .

The housing coupling portion 29 is coupled to the air guide coupling portion 19, so that the upper air guide 20 can be fixed inside the housing 10. In more detail, the protruding part 29a of the housing coupling part 29 may be coupled to the recessed part 19a of the air guide coupling part 19.

As the housing coupling part 29 and the air guide coupling part 19 are coupled, the exhaust space 52 and the air supply space 54 may be partitioned. That is, the housing coupling portion 29 and the air guide coupling portion 19 may serve as partition plates.

The upper air guide 20 can be manufactured by injection molding, so manufacturing is easy. The upper air guide 20 has the advantage of being able to implement the bypass flow path 27, guide the heat exchange unit 30, and divide the inner space of the housing 10 without a separate configuration.

9 is a perspective view of a flow path conversion damper, FIG. 10 is a cutaway view of the flow path conversion damper of FIG. 9, FIG. 11 is a cross-sectional view of a flow path guide in a total heat exchange mode, and FIG. 12 is a flow path guide in a bypass mode. 13 is a cross-sectional view taken along line A-A of FIG. 2 in total heat exchange mode, and FIG. 14 is a cross-sectional view taken along line A-A of FIG. 2 in bypass mode.

Hereinafter, the configuration and operation of the flow guide 40 will be described with reference to FIGS. 9 to 14 .

The flow guide 40 may be installed between the ventilation hole 15 and the heat exchange unit 30 . That is, the flow guide 40 may be installed in the ventilation space 51 .

The flow path guide 40 may guide air sucked through the ventilation hole 15 to the total heat exchange element 38 or the bypass flow path 27 .

The control unit 59 may control the passage conversion damper 41 of the passage guide 40, and may control it in a total heat exchange mode or a bypass mode.

In the total heat exchange mode, the flow guide 40 allows the indoor air sucked through the ventilation hole 15 to flow to the total heat exchange element 38 so that it can be heat exchanged with outdoor air supplied to the room through the air supply hole 18. do.

In the bypass mode, the flow guide 40 allows the indoor air sucked through the ventilation hole 15 to flow through the bypass flow path 27, thereby bypassing the total heat exchange element 38 and discharged through the exhaust port 16. .

The passage guide 40 may include a passage conversion damper 41 and a barrier 47 . The flow guide 40 may further include a frame 45 .

The barrier 47 may vertically partition a space between the ventilation hole 15 and the heat exchange unit 30 so that air introduced into the ventilation hole 15 is guided to the bypass passage 27 or the total heat exchange element 38. . That is, the upper space 49a of the barrier 47 may communicate with the bypass passage 27 and the lower space 49b of the barrier 47 may communicate with the total heat exchange element 38 .

The barrier 47 may be disposed in the ventilation space 51 .

The barrier 47 may be formed to extend from the passage conversion damper 41 to the heat exchange unit 30 . In more detail, the barrier 47 may be formed to extend from the rotation shaft 42 of the flow conversion damper 41 to the heat exchange unit 30 .

The barrier 47 may have a shape of a free curved surface. Preferably, a first horizontal portion adjacent to the barrier 47 and the passage conversion damper 41, a second horizontal portion adjacent to the heat exchange unit 30, and a gradient formed between the first horizontal portion and the second horizontal portion wealth may be included.

The barrier 47 may contact the upper plate 35 of the heat exchange unit 30 . By bonding the barrier 47 to the upper plate 35, the air flowing into the ventilation hole 15 is transferred to the bypass passage 27 located on the upper side of the upper plate 35 and the heat transfer located on the lower side of the upper plate 35. Each can be introduced into the exchange element 38.

At this time, the upper plate 35 may be located above the rotational shaft 42 of the passage conversion damper 41, and the shape of the barrier 47 may be a free curved surface having a surface inclined upward.

When the frame 45 is not included in the passage guide 40, the passage conversion damper 41 may be disposed in the ventilation hole 15, and the barrier 47 is formed from the upper side of the ventilation hole 15 to the heat exchange unit 30 It can be formed by extending up to.

When the flow guide 40 includes the frame 45 , the barrier 47 may be disposed inside the frame 45 . At this time, the flow path conversion damper 41 may be disposed in the vent 15, but is preferably installed in the frame 45.

The passage conversion damper 41 may be installed directly on the vent 15 or may be installed on the frame 45 as shown in FIGS. 11 and 12 .

The shape of the passage conversion damper 41 is not limited, but is preferably a circular damper.

The passage conversion damper 41 may include a rotating shaft 42 , a shielding plate 43 and a duct unit 44 .

The rotating shaft 42 may be connected to a driving motor (not shown) to rotate the flow path conversion damper 41 . The driving motor may be installed on the frame 45 or the upper air guide 20 .

The rotating shaft 42 may be formed long in the horizontal direction, but is not limited thereto.

A shielding plate 43 may be connected to the rotating shaft 42 . The rotating shaft 42 and the shielding plate 43 may be integrally formed.

The shape of the shielding plate 43 may be formed to correspond to the shape of the ventilation hole 15 or the suction hole 46 .

The rotating shaft 42 may be connected to one edge of the shielding plate 43 . In more detail, the rotating shaft 42 may be connected to an upper side of the shield plate 43 . For example, the shielding plate 43 may have a disk shape with an upper portion horizontally cut out, and the rotating shaft 42 may be connected to the cut edge portion of the shielding plate 43 .

Accordingly, as the rotary shaft 42 rotates, the entire shield plate 43 may rotate in the same direction around the rotary shaft 42 .

A duct unit 44 may be connected to the shielding plate 43 . In more detail, a hole 44a may be formed in the shielding plate 43, and the duct unit 44 may be connected to the hole 44a. As a result, the air introduced into the hole 44a of the shielding plate 43 may flow into the duct unit 44 . The hole 44a may be a passage at one end of the duct unit 44 .

The duct unit 44 may be connected to the rear surface of the shielding plate 43 . In this case, the rear surface of the shielding plate 43 may mean a surface opposite to the surface facing the ventilation hole 15 from the shielding plate 43 .

As the rotating shaft 42 rotates, the duct unit 44 may rotate together with the shielding plate 43 .

The duct unit 44 may have a curved pipe shape having a certain curvature. In more detail, the duct unit 44 may have a curved pipe shape having a curvature corresponding to a circle centered on the rotating shaft 42 . That is, the center of curvature of the duct unit 44 may be the rotation axis 42 . At this time, the duct unit 44 may be vertically connected to the shielding plate 43 .

The duct unit 44 may pass through the barrier 47 . In more detail, one end of the duct unit 44 may be connected to the shielding plate 43 as described above, and the other end may pass through the barrier 47 as the duct unit 44 rotates. Thus, the other end side passage 44b of the duct unit 44 may be located in the upper space 49a of the barrier 47 .

A guide hole corresponding to the cross-sectional shape of the duct part 44 is formed in the barrier 47, and the other end of the duct part 44 may pass through the barrier 47 through the guide hole.

The rotation shaft 42 and the shielding plate 43 of the passage conversion damper 41 may be positioned below the barrier 47 . Accordingly, the duct portion 44 of the passage conversion damper 41 may pass through the barrier 47 from below the barrier 47 .

A duct guide part 48 may be provided in the barrier 47 . The duct guide unit 48 may serve to guide the duct unit 44 that rotates through the barrier 47 . The duct guide part 48 may be formed to be bent to correspond to the curvature of the duct part 44 .

One end of the duct guide part 48 is connected to the barrier 47, and the other end may be spaced apart from the inner surface of the upper air guide 20 and the inner surface of the frame 45.

The duct guide part 48 may form a passage into which the duct part 44 is inserted. The duct unit 44 penetrating the barrier 47 may be guided by the duct guide unit 48 and inserted into the upper space 49a of the barrier 47 .

Meanwhile, the frame 45 may have a substantially triangular prism shape. The frame 45 may be installed in the ventilation space 51, and a barrier 47 is provided therein to guide the air sucked into the ventilation hole 15 to the bypass passage 27 or the total heat exchange element 38. can

A suction port 46 may be formed in the frame 45 . Air introduced through the ventilation hole 15 of the housing 10 may be sucked into the intake hole 46 of the frame 45 .

Although the air sucked into the ventilation hole 15 may be guided to the intake hole by a separate member, the intake hole 46 and the ventilation hole 15 are preferably matched. That is, the inlet 46 and the vent 15 may be arranged in a line on the same line.

Accordingly, indoor air introduced through the ventilation hole 15 may be introduced into the frame 45 through the intake hole 46 . Indoor air introduced through the inlet 46 may flow into the upper space 49a or the lower space 49b of the barrier 47 according to the state of the flow path conversion damper 41 .

The flow path conversion damper 41 may be installed on the frame 45 . In more detail, the flow path conversion damper 41 may be installed in the inlet 46. In this case, a separate ventilation damper 15a may be installed in the ventilation hole 15 .

The heat exchange unit 30 side of the frame 45 may be open. The barrier 47 may be installed inside the frame 45 . In more detail, the barrier 47 may be formed extending from the rotational shaft 42 of the passage conversion damper 41 installed at the inlet 46 to the upper plate 35 of the heat exchange unit 30.

The barrier 47 may partition the inner space of the frame 45 vertically. In more detail, the barrier 47 may partition a first space communicating with the inlet 46 and the bypass passage 27 and a second space communicating with the inlet 46 and the total heat exchange element 38. . The first space may be an upper space 49a of the barrier 47, and the second space may be a lower space 47b of the barrier 47.

The passage conversion damper 41 may communicate the ventilation hole 15 and the upper space 49a or the lower space 49b of the barrier 47 . In more detail, the flow conversion damper 41 communicates the upper space 49a of the ventilation hole 15 and the barrier 47 in the bypass mode, and the lower space of the ventilation hole 15 and the barrier 47 in the total heat exchange mode (49b) can be communicated. It is explained in detail below.

In the total heat exchange mode, as shown in FIG. 11, the duct unit 44 may be shielded. In more detail, in the total heat exchange mode, the rotating shaft 42 may be rotated in a direction in which the duct unit 44 passes through the barrier 47 . The rotating shaft 42 may be rotated until the duct part 44 comes into contact with the inner surface of the frame 45 . If the frame 45 is not included in the flow guide 40, the rotating shaft 42 may be rotated until the duct part 44 comes into contact with the inner surface of the upper air guide 20. Thus, the passage 44b on the other end side of the duct part 44 can be shielded. Therefore, the air flowing through the passage 44a at one end of the duct portion 44 cannot flow out to the passage 44b at the other end.

It is also possible that a separate shielding member (not shown) is provided on the inner surface of the frame 45 or the inner surface of the upper air guide 20 so that the duct unit 44 is in contact with the shielding member to be shielded. At this time, it is preferable that the shielding member is made of a material having elasticity such as rubber. The shielding member may be provided on an inner surface of the frame 45 or upper air guide 20 corresponding to the passage 44b at the other end of the duct unit 44.

The rotating shaft 42 rotates to shield the duct unit 44, and at the same time, the shielding plate 43 can open the intake port 46 or the ventilation port 15. As a result, the ventilation hole 15 and the lower space 49b of the barrier 47 may communicate, and furthermore, the ventilation hole 15 and the total heat exchange element 38 may communicate.

Therefore, in the total heat exchange mode, indoor air introduced into the ventilation hole 15 can pass through the lower space 49b of the barrier 47 and flow to the total heat exchange element 38, and the total heat exchange element 38 can flow to the outside air. After heat exchange with the outdoor air introduced in (17), it can be discharged through the exhaust port (16).

In the bypass mode, the duct unit 44 may be opened as shown in FIG. 12 . In more detail, in the bypass mode, the rotating shaft 42 may be rotated in a direction in which the duct unit 44 exits the barrier 47. The rotating shaft 42 may be rotated until the duct unit 44 is completely removed from the barrier 47 . That is, the passage 44b at the other end of the duct unit 44 may be located above the barrier 47 .

Alternatively, in the bypass mode, the other end of the duct unit 44 may be inserted into the guide hole and positioned between the bottom and top surfaces of the barrier 47 . In this case, the other end side passage 44b of the duct unit 44 may be located in the guide hole of the barrier 47 . That is, a state in which the duct unit 44 does not completely penetrate the barrier 47 may be possible.

In summary, in the bypass mode, at least a part of the duct unit 44 may be located above the bottom surface of the barrier 47 . Thus, the duct unit 44 can communicate with the upper space 49a of the barrier 47 and can further communicate with the bypass passage 27 .

The rotational shaft 42 rotates to open the duct unit 44, and at the same time, the shielding plate 43 may block the suction port 46 or the ventilation port 15. That is, the shielding plate 43 may prevent air introduced through the ventilation hole 15 from flowing into the lower space 49b of the barrier 47 . As a result, indoor air flowing through the ventilation hole 15 cannot flow into the total heat exchange element 38 .

Accordingly, in the bypass mode, indoor air introduced into the ventilation hole 15 may be guided to the upper space 49a of the barrier 47 through the duct unit 44 and may flow into the bypass passage 27. there is. Indoor air flowing through the bypass passage 27 by bypassing the total heat exchange element 38 may be discharged through the exhaust port 16 .

15 is a control block diagram of a total heat exchanger according to an embodiment of the present invention.

Referring to FIG. 15 , the controller 59 may receive values measured by each sensor and control various components of the total heat exchanger. At this time, the control unit 59 can communicate with the central control system of the building in which the total heat exchanger 1 is installed through the communication unit, so that the central control of the total heat exchanger 1 may be possible. In addition, the control unit 59 may include a user interface or a receiving unit so that the user may directly control the total heat exchanger 1 through a remote control or the like.

The controller 59 may detect the temperature measured by the temperature sensor 65 . In more detail, the controller 59 may detect the temperature of the indoor air measured by the indoor temperature sensor 67 and the temperature of the outdoor air measured by the outdoor temperature sensor 66 .

In addition, the controller 59 may detect the carbon dioxide content of indoor air measured by the carbon dioxide sensor 63 .

Also, the controller 59 may detect the humidity of outdoor air measured by the humidity sensor 64 .

The control unit 59 may control at least one of the exhaust blower 16b, the air supply blower 18b, the heating heater 34, and the flow path conversion damper 41 according to the detection result. The controller 59 may also control the ventilation damper 15a and the outside air damper 17a.

The controller 59 can turn on/off the exhaust blower 16b and control the operating frequency. For example, the control unit 59 may keep the exhaust blower 16b always on. When the value measured by the carbon dioxide sensor 63 is higher than the predetermined value, the control unit 59 may increase the operating frequency of the exhaust blower 16b to perform rapid ventilation.

The controller 59 can turn on/off the air supply blower 18b and control the operating frequency. For example, if the humidity measured by the humidity sensor 64 is less than a predetermined humidity, the control unit 59 may turn on the air supply blower 18b to supply outdoor air into the room.

The control unit 59 can turn on/off the heating heater 34 and can control the temperature of the heating heater 34 . For example, the controller 59 may turn on the heating heater 34 when the temperature measured by the outdoor temperature sensor 66 is lower than a preset temperature.

The controller 59 may control the flow path conversion damper 41 to perform a total heat exchange mode or a bypass mode.

In the total heat exchange mode, the control unit 59 controls the drive motor connected to the rotating shaft 42 so that the shielding plate 43 opens the vent 15 and at the same time the duct unit 44 moves the inner surface of the upper air guide 20. Alternatively, it may be rotated to contact the inner surface of the frame 45.

As a result, the indoor air sucked into the ventilation port 15 by the operation of the exhaust blower 16b passes through the total heat exchange element 38 of the heat exchange unit 30 and can exchange heat with outdoor air, and is returned to the exhaust port 16. can be ejected.

In the bypass mode, the controller 59 may control a drive motor connected to the rotation shaft 42 to rotate the rotation shaft 42 so that the first panel 43a comes into contact with the upper surface of the barrier 47 . At this time, the first panel 43a may be seated on the seating portion 44 . In addition, the second panel 43b blocks a portion of the inlet 46 corresponding to the lower side of the barrier 47 to prevent indoor air introduced through the vent 15 from entering the total heat exchange element 38 .

Accordingly, the indoor air sucked into the ventilation hole 15 by the operation of the exhaust blower 16b can pass through the bypass passage 27 of the upper air guide 20 and be discharged to the exhaust hole 16 .

Bypass mode can be implemented when outdoor air needs to be rapidly exhausted. Alternatively, it may be carried out when heat exchange with outdoor air is unnecessary.

The above description is merely an example of the technical idea of the present invention, and various modifications and variations can be made to those skilled in the art 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 explain, 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 construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

1: total heat exchanger 10: housing
15: vent 16: exhaust vent
16b: blower for exhaust 17: outside vent
18: air supply port 18b: air supply blower
20: Upper air guide 27: Bypass flow path
27a: first guide part 27b: second guide part
30: heat exchange unit 35: upper plate
38: Total heat exchange element 40: Euro guide
41: euro conversion damper 42: rotational shaft
43: shielding plate 44: duct part
45: frame 46: inlet
47: barrier 48: duct guide unit

Claims (16)

A housing having a ventilation port and an air supply port formed on one side, and an outside port and an exhaust port formed on the other side opposite to the one side side;
a heat exchange unit accommodated inside the housing and including a total heat exchange element for exchanging heat between the air sucked into the outside vent and the air sucked through the ventilation hole;
an upper air guide forming a bypass flow path communicating between the ventilation hole and the exhaust hole on the upper side of the heat exchange unit;
barriers partitioning the space communicated with the ventilation hole vertically so that the upper space communicates with the bypass passage and the lower space communicates with the total heat exchange element; and
Including a passage conversion damper that communicates the ventilation hole and the upper space or the lower space of the barrier,
The euro conversion damper,
A shield plate rotatable about a rotational axis; and
A total heat exchanger comprising a duct part penetrating the barrier and having one end connected to the shielding plate to rotate together with the shielding plate. According to claim 1,
The duct part is a total heat exchanger having a curved pipe shape having a certain curvature. According to claim 2,
The center of curvature of the duct part is the total heat exchanger of the rotating shaft. According to claim 1,
The flow conversion damper is a total heat exchanger installed in the ventilation hole. According to claim 4,
In the bypass mode, the shielding plate shields the ventilation hole, and the duct unit communicates the ventilation hole and the upper space of the barrier. According to claim 4,
In the total heat exchange mode, the shield plate opens the ventilation hole, and the other end opposite to the one end in the duct part is shielded. According to claim 6,
In the total heat exchange mode, the other end of the duct part is in contact with the inner surface of the upper air guide to be shielded. According to claim 1,
Further comprising a drive motor for rotating the rotation shaft,
The drive motor is a total heat exchanger installed in the upper air guide. According to claim 1,
The barrier is provided with a duct guide,
The duct part is a total heat exchanger inserted into the duct guide part. According to claim 9,
One end of the duct guide part is connected to the barrier, and the other end is spaced apart from the inner surface of the upper air guide. According to claim 1,
The shielding plate is located below the barrier,
The other end of the duct part is a total heat exchanger located above the bottom surface of the barrier. According to claim 1,
The shielding plate is located below the barrier,
The other end of the duct part is a total heat exchanger located in the upper space of the barrier. According to claim 1,
The heat exchange unit,
Further comprising an upper plate partitioning the total heat exchange element and the bypass flow path,
The total heat exchange element is a total heat exchanger provided on the lower side of the upper plate. According to claim 13,
The barrier is a total heat exchanger disposed in contact with the upper plate. According to claim 1,
Further comprising a frame disposed between the ventilation hole and the heat exchange unit, having the barrier therein, and having a suction hole communicating with the ventilation hole,
The flow conversion damper is a total heat exchanger installed in the inlet. According to claim 15,
In the total heat exchange mode, the shield plate opens the inlet, and the other end opposite to the one end in the duct part is in contact with the inner surface of the frame to be shielded.

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