FR2886380A1 - TOTAL HEAT EXCHANGER AND A VENTILATION SYSTEM USING THE SAME - Google Patents

Abstract

Total heat exchanger having a structure capable of obtaining an improvement of the total thermal efficiency, and a ventilation system using the total heat exchanger are described. The total heat exchanger includes an air supply pipe (10) for guiding the outside air to an interior space, an exhaust air pipe (20) for guiding indoor air to the outside, at least one air supply fan (13) arranged at one side of the air supply pipe (10), the air supply fan (13) sucking the outside air, and supplying the air sucked into the interior space, at least one exhaust fan (23) at one side of the exhaust pipe (20), the exhaust fan (23) sucking the indoor air and discharging the sucked-out air, and at least one heat-exchange element (50a) arranged at an area where the indoor air and the outside air intersect each other, the heat exchange element (50a) thermally exchanging the indoor air with the outside air and having a shape causing the indoor air and outside air to flow forming an acute angle with respect to each other.

Description

ECI - TOTAL THERMAL ION EQUIPMENT AND A VENTILATION SYSTEM USING THE

EVEN

  The present invention relates to a total heat exchanger and a ventilation system using the same, and more particularly, a total heat exchanger having an improved structure so as to have a larger heat exchange area, being therefore able to obtain a improvement of the total thermal efficiency and a ventilation system using the total heat exchanger.

  In general, the air in a confined space, for example, an interior space, is increasingly contaminated according to the repeated breathing of living beings in the interior space. Therefore, it is necessary to frequently replace the contaminated air in the indoor space with fresh outside air. For this purpose, a ventilation system using a total heat exchanger is typically used.

  In particular, many ventilation systems are used in homes, large buildings and factories to ventilate indoor spaces. Ventilation systems include an air supply fan to supply outside air to an interior space, an exhaust fan to vent the interior air to the outside, and a pipe to guide the air towards the outside. outside air to the interior space while guiding the indoor air to the outside. Such a ventilation system may also include a total heat exchanger to recover a portion of the heat energy contained in the indoor air discharged to the outside.

  However, the total heat exchanger has the following problems.

  First, the height of the total heat exchanger, which is installed inside a ceiling, is restricted because the ceiling is designed with a restricted thickness. For this reason, the height of a heat exchange element, integrated in the total heat exchanger in order to perform a heat exchange between the indoor air and the outside air, is restricted. Therefore, the heat exchange surface of the heat exchange element is reduced, resulting in a relative reduction in the total thermal efficiency of the total heat exchanger.

  Secondly, the rate of airflow passing through the heat exchange element is too high to allow the heat exchange element to efficiently perform a desired heat exchange operation. A degradation of the efficiency of the total heat exchanger therefore occurs.

  Third, there is a problem that an increase in the resistance to circulation occurs because the flow directions of the indoor air and the outside air passing through the heat exchange element vary significantly. .

  Accordingly, the present invention is directed to a total heat exchanger and a ventilation system utilizing it, substantially eliminating one or more problems related to the limitations and disadvantages of the relative art.

  An object of the present invention is to provide a total heat exchanger having improved total thermal efficiency and a ventilation system utilizing the total heat exchanger.

  Another object of the present invention is to provide a total heat exchanger 1.5 capable of achieving a reduction in the resistance to the circulation and a ventilation system using the total heat exchanger.

  Additional advantages, objects and features of the invention are described in part in the description which follows and in part revealed by those skilled in the art after examination of the document which follows or can learn through the practice of the invention. . The objectives and other advantages of the invention can be realized and obtained by the structure particularly evidenced by the written description and the claims thereof, as well as the accompanying drawings.

  To achieve these and other objects and purposes of the invention, as provided and described in detail herein, a total heat exchanger comprises: an air supply pipe for guiding the outside air to an interior space ; an exhaust air pipe to guide indoor air to the outside; at least one air supply fan arranged at one side of the air supply pipe, the air supply fan sucking the outside air, and supplying the sucked air to the space therein; at least one exhaust fan U of air at one side of the exhaust air pipe, the exhaust fan sucking in the indoor air and venting the air sucked out; and at least one heat exchange element arranged at a zone where the indoor air and the outside air intersect each other, the heat exchange element thermally exchanging the indoor air with the outside air, wherein the heat exchange element has a shape causing the indoor air and the outside air to flow through the heat exchange element at an acute angle with respect to the other.

  The heat exchange element may have a transverse height less than the transverse width of the heat exchange element.

  The heat exchange element may have a substantially polygonal cross section.

  The heat exchange element may have a substantially diamond-shaped cross section.

  The at least one heat exchange element may comprise a plurality of heat exchange elements arranged in series in an airflow direction in the total heat exchanger.

  The heat exchange elements can guide a flow of air through the air supply pipe and a flow of air passing through the exhaust air pipe so that air flows pass through. through heat exchange elements in zigzag.

  The total heat exchanger may further comprise an exhaust vent branch passage connected from an exhaust air pipe, and adapted to guide the interior air to be directly exhausted to the outside by 2 (1 a forced suction force of the exhaust air fan without passing through the heat exchange element.

  The total heat exchanger may further comprise a bypass passage on the exhaust air side connected from the exhaust air pipe and adapted to guide the outside air for the purpose of being directly discharged to the interior space by a forced suction force of the air supply fan, without passing through the thermal exhaust element.

  The total heat exchanger may further include a filter unit arranged in the air supply pipe, and adapted to remove foreign matter contained in the outside air.

  3G The air supply fan may comprise a rotary shaft extending perpendicularly to a direction of exhausting the exhaust air to the interior.

  The at least one air supply fan may include a plurality of air supply fans. In this case, the total heat exchanger further comprises a dual axial motor for simultaneously driving the air supply fans.

  The exhaust air fan may comprise a rotary shaft extending perpendicular to a direction of discharge of the exhaust air to the outside.

  The at least one exhaust fan may include a plurality of exhaust fans. In this case, the total heat exchanger 10 further comprises a dual axial motor for simultaneously driving the exhaust fans.

  The total heat exchanger may further include an air supply chamber for storing the air evacuated by the air supply fan and an exhaust air chamber for storing air exhausted by the fan. exhaust air.

  In another aspect of the present invention, a ventilation system includes: an air supply pipe for guiding outside air to an interior space; an exhaust air pipe to guide indoor air to the outside; an air supply fan arranged on one side of the air supply pipe, the air supply fan sucking the outside air, and supplying the sucked air to the interior space; an exhaust fan arranged on one side of the exhaust air pipe, the exhaust fan sucking in the indoor air, and exhausting the sucked air out; a heat exchange element arranged at a zone where the indoor air and the outside air intersect each other, the heat exchange element thermally exchanging the indoor air with the outside air ; a first extension pipe including a first diffuser for diffusing outside air supplied from the air supply pipe into the interior space; and a second extension pipe including a second diffuser spaced from the first diffuser by a predetermined distance, wherein the heat exchange member 3 has a shape causing the indoor air and the outside air to flow to through the heat exchange element at an acute angle to the trough.

  The first extension pipe may further include a lower extension pipe for connecting the air supply pipe to the interior space and an upper extension pipe for connecting the air supply pipe to the 'outside.

  The second extension pipe may further include a lower extension pipe for connecting the exhaust air pipe to the interior space and an upper extension pipe for connecting the exhaust air pipe to the 'outside.

  It should be understood that the following general description and the following detailed description of the present invention are exemplary and explanatory and should provide a further explanation of the invention as claimed.

  The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated, and form part of this application, illustrate the embodiment (s) of the invention and, together with the description, serve to explain the principle of the invention. In the drawings: Fig. 1 is a schematic perspective view illustrating an internal structure of a total heat exchanger according to a first embodiment of the present invention; FIG. 2 is a schematic section illustrating the heat exchange element shown in FIG. 1 and the air flows passing through the heat exchange element; Fig. 3a is a graph schematically showing a variation in temperature as a function of the flow lengths of the indoor air and the outside air during a cooling operation to cool an interior space; graphically representing a temperature variation as a function of the flow lengths of the indoor air and of the outside air during a heating operation for heating an interior space; FIG. 4 is a schematic perspective view illustrating an internal structure of a total heat exchanger according to a second embodiment of the present invention; FIG. 5 is a schematic section illustrating the heat exchange element shown in FIG. 4 and the air flows passing through the heat sink element; FIG. 6 is a schematic perspective view illustrating an internal stricture of a total heat exchanger according to FIG. a third embodiment of the present invention; Figure 7 is a schematic view illustrating a ventilation system equipped with a total heat exchanger according to the present invention.

  Reference is now made in detail to the embodiments of the present invention, examples thereof being illustrated in the accompanying drawings. The same reference numerals will be used if possible through the drawings to designate the same or similar parts.

  In Figures 1 to 7, the continuous arrow line A represents an interior air flow, and the dashed arrowed line B represents an outside air flow.

  Figure 1 is a schematic perspective view illustrating an exemplary embodiment of a total heat exchanger according to the present invention. FIG. 2 is a schematic section illustrating a heat exchange element shown in FIG. 1. FIG. 3a is a schematic diagram showing a temperature variation as a function of the flow lengths of the indoor air and the outside air during a cooling operation to cool an interior space. Fig. 3b is a schematic diagram showing temperature variation as a function of flow lengths of indoor air and outdoor air during a warm-up operation to heat an interior space.

  Then, a first embodiment of the total heat exchanger according to the present invention will be described with reference to Figures 1 to 3b.

  The total heat exchanger includes an air supply pipe 10 for guiding the outside air to an interior space, an exhaust air pipe 20 for guiding indoor air to the outside, and an air supply element heat exchange 50a for thermally exchanging the indoor air with the outside air. The total heat exchanger may additionally include an air supply fan 13 for sucking in the outside air and supplying the sucked air to the interior space, and an exhaust fan 23 for sucking the air. inside air and evacuate the sucked air 3 (outwards.

  The heat exchange element 50a is arranged at a region where an outside air flow guided by the air supply pipe 10 and an interior air flow guided by the exhaust pipe of air 20 intersect each other. The heat exchange element 50a thermally exchanges the indoor air with the outside air through a sensible heat exchange using a temperature difference between the indoor and outdoor air and a latent heat exchange using a difference humidity between indoor and outdoor air.

  In detail, a first heat exchange passage (not shown) and a second heat exchange passage (not shown), through which the indoor air and the outside air respectively pass, are formed in the element of heat exchange 50a. The first and second heat exchange passages are defined by a heat exchange membrane (not shown) having excellent thermal characteristics.

  Therefore, when the indoor and outdoor air, having temperature and humidity differences, pass through the associated heat exchange passages, respectively, a heat exchange occurs between the indoor air and the air outside via the heat exchange membrane.

  A filter (not shown) may be provided on one side of the heat exchange element 50a. The filter works to filter air to remove foreign matter from the air. The filter may be removably coupled to the heat exchange element 50a.

  An air supply pipe inlet 11 is provided at one end of the air supply pipe 10. The air supply pipe inlet 11 communicates with the outside. An air supply pipe outlet 12 is provided at the other end of the air supply pipe 10. The outlet of the air supply pipe 12 communicates with the interior space. Similarly, an exhaust pipe inlet 21 is provided at one end of the exhaust pipe 20. The inlet of the exhaust pipe 21 communicates with the space inside. A discharge pipe outlet 22 is provided at the other end of the exhaust pipe 20. The outlet of the exhaust pipe 22 communicates with the outside.

  The air supply fan 13 is arranged in the air supply pipe 10, to forcibly suck the outside air from the outside and supply the sucked air to the interior space. The exhaust fan 23 is arranged in the exhaust air pipe 20 to forcibly suck the contaminated air from the inside and discharge the sucked air outwards.

  The air supply fan 12 and the exhaust fan 23 are both mounted in an air supply fan housing and an exhaust fan housing, respectively. The motors (not shown) are arranged on both front sides of the air supply fan housing and the exhaust fan housing, respectively.

  The operation of the configured ventilation system as described above is now described.

  When electric power is applied to the exhaust fan 23, for the purpose of venting the contaminated indoor air to a certain level, the indoor air is introduced into the exhaust air pipe 20 through the air outlet. The inlet of the exhaust air pipe 21. The interior air introduced into the exhaust air pipe 20 flows through the heat exchange element 50a in a diagonal direction of the exhaust element. heat exchange 5Oa.

  After flowing through the heat exchange element 50a, the interior air is guided along the exhaust air pipe 20, and is discharged out through the outlet of the exhaust pipe. 22. Simultaneously with the indoor air flow described above, outside air is introduced into the air supply pipe 10 through the outlet of the air supply pipe 22. Inner air introduced into the air supply pipe 10 flows through the heat exchange element 50a in a diagonal direction of the heat exchange element 50a.

  After flowing through the heat exchange element 50a, the outside air is guided along the air supply pipe 10, and is then supplied to the interior space through the outlet of the supply pipe. The indoor air and outdoor air, which flow in the manner described above, are heat exchanged by flowing through the heat exchange element 50a. As a result, the outside air is supplied to the indoor space provided the air is maintained at an appropriate temperature.

  During this time, the indoor air is exhausted to the outside mainly via two traffic paths. This means, in combination with a first flow path, that the air introduced into the exhaust air pipe 20 through the exhaust pipe inlet 21 passes through a first guide hole. of the air discharge pipe 24, and is thermally exchanged with the outside air introduced into the air supply pipe 20 via the inlet of the air supply pipe 11, and is then discharged to the outside. On the other hand, in association with a second flow path, the air introduced into the air discharge pipe 20 through the inlet of the exhaust air pipe 21 is directly discharged to the outside by a suction force of the exhaust ventilation 23. without passing through the heat exchange element 50a.

  In combination with the latter case, the total heat exchanger includes a bypass passage on the exhaust air side 26 for guiding the interior air to be exhausted directly through the outlet of the exhaust pipe. air 22. The interior air introduced into the exhaust air pipe 20 through the inlet of the exhaust air pipe 21 flows along the bypass passage on the exhaust air side. 26 after passing through a second air evacuation pipe guide hole 25, then is discharged to the outside. A damper may be provided at the inlet of the exhaust air pipe 21 for the purpose of guiding the interior air to the bypass passage on the exhaust air side 26.

  According to the configuration described above, it is possible to reduce the pressure losses caused by the then-exchange element by preventing the indoor air and the outside air from passing through the heat exchange element when differences in temperature and humidity between indoor and outdoor air are lower, as in spring and fall. Therefore, the load applied to the fan can be reduced. As a result, it is possible to obtain a reduction in energy consumption, and thus to obtain an energy gain.

  However, the total thermal efficiency of the total heat exchanger depends on how the heat exchange element 50a thermally exchanges the indoor air with the outside air. In order to obtain a total thermal efficiency, it is necessary to increase the transverse zone of the heat exchange element 50a. However, there is a restriction on increasing the vertical length of the heat exchange element 50a, i.e. the transverse height of the heat exchange element 50a, due to the design of the construction according to which the total heat exchanger is installed.

  Therefore, the improvement of the total thermal efficiency of the heat exchange element 50a and the minimization of the transverse height of the heat exchange element 50a are in opposition to one another. However, the inventor has found that it is possible to increase the cross sectional area of the heat exchange element 50a without increasing the transverse height of the heat exchange element 50a, to obtain an improvement in the temperature of the heat exchange element 50a. total thermal efficiency of the total heat exchanger.

  In detail, according to the present invention, the heat exchange element 50a is configured to cause the inner and outer air flows to pass through the heat exchange element 50a to form an acute angle θ between them. The heat exchange element 50a is also configured such that the transverse width w of the heat exchange element 50a is greater than the transverse height h of the heat exchange element 50a. In this embodiment, the heat exchange element 50a has a diamond shape, as shown in FIG.

  Of course, the heat exchange element 50a may have other transverse shapes. For example, the heat exchange element 50a may have a curved transverse shape or polygon. In addition, the heat exchange element 50a may have a transverse shape having both a rectilinear portion and a curved portion.

  When the transverse width of the heat exchange element 50a is greater than the transverse height of the heat exchange element 50a, the length of airflow flowing through the heat exchange element 50a is increased and the rate of airflow is reduced. Therefore, the indoor air and outside air passing through the heat exchange element 50a can be thermally exchanged more efficiently with each other.

  In addition, when the transverse width of the heat exchange element 50a is greater than the transverse height of the heat exchange element 50a, the variation of the directions of the air flows passing through the supply pipe air and the exhaust pipe is reduced. As a result, the flow resistances in the air supply pipe and the exhaust air pipe are reduced.

  A variation of the temperature as a function of the length of the defined circulation path in the heat exchange element according to the present invention is described below with reference to FIGS. 3A and 3B.

  In each of FIGS. 3A and 3B, X denotes a temperature difference between the indoor air temperature varying according to the length of the circulation path of the heat exchange element, as described by graph A and the temperature outside air varying according to the flow length of the circulation path element of the heat exchange element, as described in graph B, in the case where the heat exchange element has a structure conventional. In each of FIGS. 3A and 3B, Y denotes a temperature difference between the indoor air temperature varying as a function of the length of the flow path of a heat exchange element, as described in graph A and FIG. outside air temperature varying according to the length of the circulation path of the heat exchange element, as described in graph B, in case the heat exchange element has a structure according to the present invention .

  For a mode of operation for cooling the interior space, for example, during the summer season, a temperature of the interior air to be cooled is set to be relatively lower than the outside air temperature, as described in Figure 3A. The difference between the indoor air temperature and the outside air temperature is reduced according to the performance of the heat exchange by the heat exchange element 50a of the total heat exchanger. The outside air, which has a relatively high temperature, is exchanged thermally with the indoor air, which is discharged to the outside. As a result, the outside air is supplied to the interior space in a state, in which the outside air temperature has been reduced below the temperature of outside air outside.

  With reference to FIG. 3A, it can be obtained, in the case where the heat exchange element having a transverse shape according to the present invention, that a more efficient heat exchange is achieved. Therefore, it is possible to further reduce the temperature difference between the outside air supplied to the indoor space and the indoor air discharged to the outside by using the heat exchange element according to the present invention.

  For a mode of operation for heating the interior space, for example, during the winter season, the temperature of the indoor air to be heated is set to be relatively higher than the outside air temperature, as shown in Figure 3B. With reference to FIG. 3B, it can be obtained, in the case where the heat exchange element having a transverse shape according to the present invention, that a more efficient heat exchange is achieved, in comparison with the element of FIG. classical heat exchange.

  Although the total heat exchanger according to this embodiment has been described as being installed inside a ceiling, it can be installed on a side wall of a building.

  A second embodiment of the total heat exchanger according to the present invention is described with reference to Figures 4 and 5.

  The basic configuration of the second embodiment of the total heat exchanger according to the present invention is identical to that of the first embodiment described above. In a second embodiment, however, the total heat exchanger includes a plurality of heat exchange elements 50b arranged in series in an airflow direction in the total heat exchanger.

  As described above, there is a restriction on increasing the cross-sectional height of a heat exchange element due to restrictions in the design of the construction in which the total heat exchanger is installed. When the heat exchange elements 50b are arranged in series in an air flow direction in the total heat exchanger, it is possible to obtain an improvement of the heat exchange efficiency without increasing the transverse height of the heat exchangers. heat exchange elements 50b.

  As shown in FIG. 4, the air flowing in the air supply pipe 10 and the air discharge pipe 20 passes through the zigzag heat exchange elements 50b. As a result, the total heat exchange area of the heat exchange elements 50b and the length of the path along which the air flows are increased.

  In addition, the air flow rate is progressively reduced with air passing sequentially through the series-arranged heat exchange elements 50b. Such a reduction in flow velocity provides advantageous effects in terms of heat exchange. Therefore, it is possible to improve the total thermal efficiency of the total heat exchanger due to the increased total heat exchange area and the reduced airflow rate.

  However, it is preferred that the heat exchange elements are releasably coupled to the total heat exchanger. Thanks to such a removable structure, it is possible to obtain easy assembly and disassembly of the heat exchange elements.

  The total heat exchanger also includes a bypass passage on the exhaust air side 26. When the temperature and humidity differences between the interior space and the outside are lower, as in spring or autumn, the interior air is vented out via the bypass passage of the exhaust air side 26 without passing through the heat exchange elements 50b. In this case, there is no loss of pressure through the heat exchange elements 50b. Therefore, it is possible to reduce the load applied to the exhaust air blower, and thus reduce the power consumption.

  Although not shown, the total heat exchanger may also include a bypass passage on the air supply side to allow outside air to be directly introduced into the interior space. In this case, a damper is provided at one end of the supply side bypass passage for the purpose of controlling the flow of outside air through the bypass passage of the air supply side. Therefore, when it is not necessary to thermally exchange the indoor air with the outside air, the outside air is guided to pass through the inlet of the air supply pipe, then to be directly introduced into the interior space via the bypass passage on the air supply side.

  The total heat exchanger may further include a filter unit (not shown) for filtering outside air flowing through the air supply pipe to remove foreign matter in the outside air. As a result, the outside air can be supplied to the interior space in a clean condition after passing through the filter unit.

  The filter unit includes a dust collection filter that has a fiber structure to collect foreign matter such as dust. The filter unit can also include an antibiotic filter to remove bacteria from the air, a photocatalytic collector to remove fine dust and volatile organic compounds passing through the filter, a deodorizing filter to deodorize the air, a anion generator or a combination thereof.

  The third embodiment of the total heat exchanger according to the present invention is described below with reference to FIG.

  According to this embodiment, the total heat exchanger includes a fan motor assembly on the air supply side 130 and a fan motor assembly on the exhaust air side 230.

  The air supply side fan motor assembly 130 includes a plurality of air supply fans 131, each having a rotating shaft extending perpendicular to the direction of exhausting the outside air. Similarly, the exhaust fan-side fan motor assembly 230 includes a plurality of exhaust fans 131, each having a rotatable shaft extending perpendicular to the exhaust direction of the exhaust fan. indoor air.

  l () The air supply fans 131 are driven by a single bi-axial motor 132. Similarly, the exhaust fans 231 are driven by a single dual axial motor 232. Since In the case of the air supply 131 and the exhaust fans 231 being driven by the associated bi-axial motors 1 32 and 232 respectively, it is possible to produce an increase in the amount of air flow. In the illustrated case, the total heat exchanger includes two air supply fans 131 and two exhaust fans 231.

  The total heat exchanger also includes an air supply chamber 17 defined inside the total heat exchanger at the air supply fans 131, and adapted to store the air exhausted by the fans. an air supply chamber 131, and an air evacuation chamber 27 defined inside the total heat exchanger 231, and adapted to store the air evacuated by the exhaust fans 231. Since the air supply chamber 17 and the air evacuation chamber 27 temporarily store the air to be supplied and the air to be discharged, respectively, the air can flow uniformly through the pipe air supply and exhaust pipe.

  Although the rotary shafts of the air supply fan 13 and the exhaust air fan 23 extend in directions identical to the directions of discharge of the outside air and the indoor air, respectively, in the three embodiments (described above), the rotating shafts of the air supply fans 131 and the exhaust air fans 231 extend perpendicular to the directions of the exhaust of the outside air and the indoor air, respectively, in this embodiment.

  An exemplary embodiment of a ventilation system according to the present invention is described with reference to FIG.

  The ventilation system according to this embodiment includes a total heat exchanger 1000 which has the same configuration as that of the total heat exchangers described above. The ventilation system also includes a first extension pipe 500 and a second extension pipe 600. The total heat exchanger 100 is arranged at an area where the first and second extension pipes 500 and 600 meet. .

  The first extension pipe 500 includes a first lower extension pipe 520 to allow the air supply pipe of the total heat exchanger 1000 to communicate with the interior space, a first top extension pipe 530 for allow the air supply pipe of the total heat exchanger 1000 to communicate with the outside, and a first diffuser 510 to diffuse the outside air supplied to the interior space.

  In detail, the first lower extension pipe 520 is connected, at one end thereof, to the air supply pipe of the total heat exchanger 1000, and is connected, at the level of the other end thereof, the first diffuser 510 partially open to the interior space. Of course, the first diffuser 510 may be fully open to the interior space.

  The second extension pipe 600 includes a second lower extension pipe 620 to allow the exhaust air pipe of the total heat exchanger 1000 to communicate with the interior space, a second upper extension pipe 630 for allow the exhaust air pipe of the total heat exchanger 1000 to communicate with the outside and a second diffuser 610 to suck the indoor air into the second extension pipe 600.

  In a detailed manner, the second lower extension pipe 620 is connected, at one end thereof, to the exhaust pipe of the total heat exchanger 1000 and is connected at the level of the another end thereof, the second diffuser 610 partially open to the interior space. Of course, the second 6O diffuser 610 can be fully open to the interior space.

  The second extension pipe 600 operates to allow the exhaust air pipe of the total heat exchanger 1000 to communicate with the interior space and to allow the total heat exchanger 100 to communicate with the outside. The second diffuser 610 is mounted on one end of the second extension pipe 600.

  Since the ventilation system having the configurations described above uses the total heat exchanger according to the present invention, the ventilation system can maintain a high total thermal efficiency without taking into account the design of the construction in which the system of ventilation. ventilation is installed.

  It is obvious to those skilled in the art that modifications and variations can be made in the present invention without departing from the spirit of the scope of the invention. Therefore, it is intended that the present invention covers the modifications and variations of this invention assuming that they fall within the scope of the appended claims and their equivalents.

  Of course, the invention is not limited to the embodiments described above and shown, from which we can provide other modes and other embodiments, without departing from the scope of the invention. .

Claims (15)

  A total heat exchanger comprising: an air supply pipe (10) for guiding outside air to an interior space; an exhaust air pipe (20) for guiding indoor air to the outside; at least one air supply fan (13) arranged at one side of the air supply pipe (10), the air supply fan (13) sucking the outside air, and feeding the air sucked into the interior space; at least one exhaust fan (23) at one side of the exhaust air pipe (20), the exhaust fan (23) sucking the indoor air and exhausting the air sucked out; and at least one heat exchange element (50a) arranged at an area where the indoor air and the outdoor air intersect each other, the heat exchange element (50a) heat exchanging the indoor air with the outside air, wherein the heat exchange element (50a) has a shape causing the indoor air and the outside air to flow through the heat exchange element (50a). ) At an acute angle to each other.   2. Total heat exchanger according to claim 1, wherein the heat exchange element (50a) has a transverse height less than the transverse width of the heat exchange element (50a).   The total heat exchanger of claim 1, wherein the heat exchange element (50a) has a substantially polygonal cross section.   4. Total heat exchanger according to claim 3, wherein the heat exchange element (50a) has a substantially diamond-shaped cross section.   The total heat exchanger according to claim 1, wherein the at least one heat exchange element (50a) comprises a plurality of heat exchange elements (50a) arranged in series in an air flow direction in the total heat exchanger.   The total heat exchanger according to claim 5, wherein the heat exchange elements (50a) guide a flow of air passing through the air supply pipe (10) and a flow of air passing through the air discharge pipe (20) so that air flows through the zigzag heat exchange elements (50a).   The total heat exchanger of claim 1, further comprising a bypass passage on the exhaust side (26) connected from the exhaust air pipe (20) and adapted to guide the air interior so as to be directly discharged to the outside by a forced suction force of the exhaust fan (23), without passing through the heat exchange element (50a).   The total heat exchanger of claim 1, further comprising a bypass passage on the exhaust side (26) connected from the exhaust air pipe (20) and adapted to guide the air outside to be directly discharged to the interior space by a forced suction force of the air supply fan 13), without passing through the heat exchange element (50a).   The total heat exchanger of claim 1, further comprising a filter unit arranged in the air supply pipe (10), and adapted to remove foreign matter contained in the outside air.   10. The total heat exchanger of claim 1, wherein the air supply fan (13) comprises a rotary shaft extending perpendicularly to a direction of discharge of the outside air discharged to the interior space.   The total heat exchanger of claim 10, wherein the at least one air supply fan (13) comprises a plurality of air supply fans (13), further comprising: a dual engine axial direction to simultaneously drive the air supply fans.   The total heat exchanger of claim 1, wherein the exhaust fan (23) comprises a rotatable shaft extending perpendicular to an exhaust direction of the exhaust air discharged to the outside.   The total heat exchanger according to claim 12, wherein the at least one exhaust fan (23) comprises a plurality of air exhaust fans (23), further comprising: a dual axial motor to simultaneously drive the exhaust fans.   The total heat exchanger of claim 1, further comprising: an air supply chamber (17) for storing air exhausted by the air supply fan (13); and an exhaust air chamber (27) for storing the air exhausted by the exhaust fan (23).   A ventilation system comprising: an air supply pipe (10) for guiding outside air to an interior space; an exhaust air pipe (20) for guiding indoor air to the outside; an air supply fan (10) arranged on one side of the air supply pipe (10), the air supply fan (13) sucking the outside air, and supplying the sucked air towards the interior space; an exhaust fan (23) arranged on one side of the exhaust air pipe (20), the exhaust fan (23) sucking the indoor air, and exhausting the sucked air outwardly a heat exchange element (50a) arranged at an area where the indoor air and the outside air intersect each other, the heat exchanging element (50a) exchanging heat indoor air with outside air; a first extension pipe (500) including a first diffuser (510) for diffusing outside air supplied from the air supply pipe (10) into the interior space and a second pipe extension (600) including a second diffuser (610) spaced from the first diffuser (51 (0 by a predetermined distance, wherein the heat exchange element (50a) has a shape bringing the indoor air and the outside air to flow through the heat exchange element (50a) at an acute angle to each other.   The exhaust system of claim 15, wherein the first extension pipe (500) further comprises a lower extension pipe (520) for connecting the air supply pipe (10) to the interior space and an upper extension pipe (530) for connecting the air supply pipe (10) to the outside.   The exhaust system of claim 15, wherein the second extension pipe (600) further comprises a lower extension pipe (620) for connecting the exhaust air pipe (20) to the an interior space and an upper extension pipe (630) for connecting the exhaust pipe (20) to the outside.