Ventilation apparatus

Abstract

The ventilation apparatus according to an embodiment of the present invention may include: a sensor unit for sensing air quality of an area in which the sensor unit is installed; a heat exchange unit for exchanging heat between air discharged from an indoor space to an outdoor space and air supplied from the outdoor space to the indoor space; a device housing provided with a filter unit for purifying air; a ventilation unit which is provided in the device housing and includes an outdoor inlet port allowing outdoor air to be introduced into the device housing, an indoor inlet port allowing indoor air to be introduced into the device housing, an indoor supply port allowing the air introduced through the outdoor inlet port or the indoor inlet port to be supplied to the indoor space, and an outdoor outlet port allowing the air introduced through the outdoor inlet port or the indoor inlet port to be discharged to the outdoor space; and a damper unit including a first damper mounted on one side of the heat exchange unit in the device housing, a second damper mounted on the other side of the heat exchange unit, a third damper mounted on the upper portion of the heat exchange unit, and a fourth damper mounted on the lower portion of the heat exchange unit, wherein according to the air quality sensed by the sensor unit, at least one of the first damper, the second damper, the third damper, and the fourth damper, which are provided in the damper unit, is selectively operated to change the flow of air passing through the device housing.

Description

ventilation device

[0001] The present invention relates to a ventilation device, and more specifically, to a ventilation device that can maintain clean air quality in an indoor space and save energy by operating in a selected mode among various modes according to the air quality detected by a sensor unit.

[0002]

[0003] Generally, ventilation systems are designed to ventilate the outdoors or indoors by forcibly drawing air in from the indoors or outdoors, and are primarily installed for the ventilation of multi-use facilities used by many people, such as schools, hospitals, kitchens, offices, and subway stations.

[0004] Accordingly, a conventional ventilation device may include a case, an outside air inlet and an inside air outlet provided on one side thereof, and an outside air outlet and an inside air inlet provided on the other end thereof. In addition, it may further include a supply fan and an exhaust fan provided inside the case, a heat exchanger for heat exchange, and a filter for air purification.

[0005] A ventilation device of this configuration operates on the principle of drawing outdoor air into the case via a supply fan, filtering it with a filter, and then discharging it into the room, while simultaneously drawing indoor air into the case via an exhaust fan, filtering it with a filter, and then discharging it outside.

[0006] In this process, the heat exchanger can reduce heating loss by, for example, absorbing heat from the exhausted indoor air in winter to raise the temperature of the incoming outdoor air, and conversely, reduce cooling loss by absorbing cold air from the exhausted indoor air in summer to lower the temperature of the incoming outdoor air.

[0007] However, while conventional ventilation systems can reduce heating or cooling losses through heat exchange, they are not equipped with various optimized modes according to the indoor environment.

[0008] Therefore, there is a need to develop a ventilation device with a new configuration capable of automatically selecting and applying the optimal ventilation method.

[0009]

[0010] Related prior art includes Korean Patent Registration No. 10-1892128 (Title of invention: Ventilation unit equipped with a device that varies airflow by adjusting a damper installed in the body using a Venturi differential pressure without internal supply and exhaust fans).

[0011]

[0012] An embodiment of the present invention provides a ventilation device capable of maintaining clean air quality in an indoor space and saving energy by operating in a selected mode among various modes according to the air quality detected by a sensor unit, for example, a clean ventilation mode, a rapid air supply mode, a rapid air supply mode, a rapid air supply and exhaust mode, an internal circulation ventilation mode, an internal cleaning mode, a total cleaning mode, and a natural ventilation mode.

[0013]

[0014] The problems that the present invention aims to solve are not limited to the problem(s) mentioned above, and other unmentioned problems will be clearly understood by those skilled in the art from the description below.

[0015]

[0016] A ventilation device according to an embodiment of the present invention comprises: a device housing equipped with a sensor unit for detecting air quality in an installed zone, a heat exchange unit for heat exchange between air discharged from indoors to outdoors and air supplied from outdoors to indoors, and a filter unit for air purification; a ventilation unit provided in the device housing and including an outdoor inlet for introducing outdoor air into the device housing, an indoor inlet for introducing indoor air into the device housing, an indoor supply port for supplying air introduced by the outdoor inlet or the indoor inlet to indoors, and an outdoor discharge port for discharging air introduced by the outdoor inlet or the indoor inlet to the outside; and a damper unit including a first damper mounted on one side of the heat exchange unit within the device housing, a second damper mounted on the other side of the heat exchange unit, a third damper mounted on the upper part of the heat exchange unit, and a fourth damper mounted on the lower part of the heat exchange unit, wherein the first damper, the second damper, and the third damper provided in the damper unit are detected by the air quality detection of the sensor unit. And at least one of the fourth dampers can be selectively operated to change the flow of air passing through the device housing.

[0017] In addition, the filter unit according to an embodiment of the present invention may include a pre-filter provided on one wall of the heat exchange unit connected to the outdoor inlet within the device housing to remove foreign substances from the air, and a deodorizing filter provided on another wall of the heat exchange unit connected to the indoor inlet within the device housing to remove odors when the air is discharged.

[0018] In addition, the device housing according to an embodiment of the present invention includes a first barrier wall equipped with a supply fan that creates an airflow so that air passing through the heat exchanger is directed toward the indoor supply port, and a second barrier wall equipped with an exhaust fan that creates an airflow so that air passing through the heat exchanger is directed toward the outdoor exhaust port, and the internal space of the device housing may be partitioned by the first barrier wall and the second barrier wall.

[0019] In addition, when the ventilation device is operated in a clean ventilation mode based on the air quality detection result by the sensor unit according to an embodiment of the present invention, air introduced through the outdoor inlet is filtered while passing through the pre-filter, then heat exchanged in the heat exchanger, then passes through the supply fan and is supplied through the indoor supply port, and air introduced through the indoor inlet is odor-removed while passing through the deodorizing filter, then heat exchanged in the heat exchanger, then passes through the exhaust fan and is discharged through the outdoor outlet, and the damper unit may not be operated.

[0020] In addition, when the ventilation device is operated in a rapid air supply mode based on the air quality detection result by the sensor unit according to an embodiment of the present invention, air introduced through the outdoor inlet is filtered while passing through the pre-filter, then heat exchanged in the heat exchanger, then passes through the supply fan and is supplied through the indoor supply port, and air introduced through the indoor inlet is odor removed while passing through the deodorizing filter, then heat exchanged in the heat exchanger, then passes through the supply fan and is supplied through the indoor supply port via the open fourth damper, and the first damper, the second damper, and the third damper may not be operated.

[0021] In addition, when the ventilation device is operated in a rapid exhaust mode based on the air quality detection result by the sensor unit according to an embodiment of the present invention, air introduced through the indoor inlet passes through the exhaust fan via the open first damper and the fourth damper and is discharged through the outdoor outlet, and air introduced through the indoor supply port by the operation of the exhaust fan passes through the exhaust fan via the open fourth damper and is discharged through the outdoor outlet, and the second damper and the third damper may not be operated.

[0022] In addition, when the ventilation device is operated in a rapid supply and exhaust mode based on the air quality detection result by the sensor unit according to an embodiment of the present invention, air introduced through the outdoor inlet is filtered while passing through the pre-filter, then passes through the supply fan after heat exchange in the heat exchange unit, and is supplied through the indoor supply port; air introduced through the indoor inlet is odor-removed while passing through the deodorizing filter, then passes through the exhaust fan after heat exchange in the heat exchange unit, and is discharged through the outdoor discharge port; the supply fan and the exhaust fan are operated at 100% output, the damper unit is not operated, and when the time set for the rapid supply and exhaust mode has elapsed, it can be automatically switched to the clean ventilation mode.

[0023] In addition, when the ventilation device is operated in an internal circulation ventilation mode based on the air quality detection result by the sensor unit according to an embodiment of the present invention, the air introduced through the indoor inlet passes through the deodorizing filter to remove odors, then passes through the heat exchanger, passes through the open fourth damper, passes through the supply fan, and is supplied through the indoor supply port, and the first damper, the second damper, and the third damper may not be operated.

[0024] Additionally, when the ventilation device is operated in an internal cleaning mode based on the air quality detection result by the sensor unit according to an embodiment of the present invention, air introduced through the outdoor inlet passes through the second damper provided on one side of the pre-filter, passes through the exhaust fan, and is discharged through the outdoor outlet, the internal cleaning mode is operated periodically for an operating time set at a set time, the exhaust fan is operated at 100% output, and the first damper, the third damper, and the fourth damper are not operated, characterized by a ventilation device.

[0025] In addition, when the ventilation device is operated in a full cleaning mode based on the air quality detection result by the sensor unit according to an embodiment of the present invention, air introduced through the outdoor inlet passes through the open second damper and the exhaust fan and is discharged through the outdoor outlet, air introduced through the indoor inlet passes through the open third damper and the second damper and is discharged through the exhaust fan and the outdoor outlet, and due to the operation of the exhaust fan, air introduced through the indoor supply port passes through the open fourth damper and the exhaust fan and is discharged through the outdoor outlet, and the full cleaning mode can be operated periodically for a set operating time at a set time.

[0026] In addition, when the ventilation device is operated in a natural ventilation mode based on the air quality detection result by the sensor unit according to an embodiment of the present invention, the air introduced through the outdoor inlet is filtered as it passes through the pre-filter, then passes through the heat exchanger, passes through the supply fan, and can be supplied through the indoor supply port.

[0027]

[0028] According to an embodiment of the present invention, by operating in a selected mode among various modes based on the air quality detected by the sensor unit, for example, a clean ventilation mode, a rapid air supply mode, a rapid air supply mode, a rapid air supply and exhaust mode, an internal circulation ventilation mode, an internal cleaning mode, a total cleaning mode, and a natural ventilation mode, the air quality of the indoor space can be kept clean and energy can be saved.

[0029]

[0030] FIG. 1 is a drawing illustrating the internal configuration of a ventilation device according to one embodiment of the present invention.

[0031] Figure 2 is a diagram illustrating the case where the ventilation device of Figure 1 is operated in a clean ventilation mode.

[0032] Figure 3 is a diagram illustrating the case where the ventilation device of Figure 1 operates in a rapid air supply mode.

[0033] Figure 4 is a diagram illustrating the case where the ventilation device of Figure 1 operates in a rapid exhaust mode.

[0034] Figure 5 is a diagram illustrating the case where the ventilation device of Figure 1 operates in rapid supply and exhaust modes.

[0035] Figure 6 is a diagram illustrating the case where the ventilation device of Figure 1 operates in an internal circulation ventilation mode.

[0036] Figure 7 is a diagram illustrating the case where the ventilation device of Figure 1 operates in an internal cleaning mode.

[0037] Figure 8 is a diagram illustrating the case where the ventilation device of Figure 1 operates in a full cleaning mode.

[0038] Figure 9 is a diagram illustrating the case where the ventilation device of Figure 1 operates in a natural ventilation mode.

[0039]

[0040] The advantages and / or features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0041]

[0042] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0043] FIG. 1 is a drawing illustrating the internal configuration of a ventilation device according to one embodiment of the present invention.

[0044] As illustrated herein, a ventilation device (100) according to one embodiment of the present invention may include a sensor unit (not shown) that detects the air quality of an installed area, for example, an indoor space in real time, a device housing (110) that forms the exterior of the device and is equipped with a heat exchange unit (111) and a filter unit (150), a ventilation unit (130) that is mounted in the device housing (110) to ventilate the indoor space by introducing or discharging indoor air and outdoor air, a damper unit (120) that is mounted in the device housing (110) to change the flow of air, and a supply fan (141) and an exhaust fan (145) that are mounted in the device housing (110) to generate a flow of air.

[0045] With this configuration, depending on the air quality detected by the sensor unit, it operates in a selected mode among various modes, such as the clean ventilation mode, rapid supply mode, rapid supply mode, rapid supply and exhaust mode, internal circulation ventilation mode, internal cleaning mode, total cleaning mode, and natural ventilation mode described later, thereby not only maintaining the air quality of the indoor space cleanly but also saving energy.

[0046] To describe each configuration, although not illustrated, the sensor unit of the present embodiment may be mounted in an indoor space or mounted in a device housing (110) to detect the air quality of the indoor space in real time. For example, it may measure carbon dioxide concentration or fine dust, ultrafine dust concentration, etc., and based on the detection information of the sensor unit, the control unit may operate the ventilation unit (130), damper unit (120), and fans (141, 145) of the ventilation device (100).

[0047] Meanwhile, the device housing (110) of the present embodiment forms the basic exterior of the device and can be provided in a rectangular shape as shown in FIG. 1, and a heat exchanger (111) for heat exchange can be provided in the center of the interior. Walls (115, 117) for the flow of air entering or exiting through the holes (131, 133, 135, 137) of the ventilation unit (130) can be provided within the device housing (110), and a first barrier wall (115) with a supply fan (141) provided at the bottom and a second barrier wall (117) with an exhaust fan (145) provided at the bottom can be provided.

[0048] By partitioning the inside of the device housing (110) by these barrier walls (115, 117), a path for air flow, i.e., a duct, can be formed.

[0049] Meanwhile, the heat exchanger (111) of the present embodiment may be provided as a space having a hexagonal cross-section in the center of the device housing (110), and heat exchange between air flowing in or out through each of the holes (131, 133, 135, 137) of the ventilation unit (130) may be performed within this space.

[0050] The ventilation unit (130) of the present embodiment is provided in the device housing (110) and may include an outdoor inlet (131) for introducing outdoor air into the device housing (110), an indoor inlet (133) for introducing indoor air into the device housing (110), an indoor supply port (135) for supplying the air introduced by the outdoor inlet (131) or the indoor inlet (133) into the indoor space, and an outdoor discharge port (137) for discharging the air introduced by the outdoor inlet (131) or the indoor inlet (133) to the outside.

[0051] Additionally, a filter unit (150) for air purification or odor removal may be installed in the heat exchange unit (111). The filter unit (150) of the present embodiment may include a pre-filter (151) provided on one wall of the heat exchange unit (111) connected to an outdoor inlet (131) within the device housing (110) as shown in FIG. 1, which removes foreign substances such as fine dust and ultrafine dust from the air entering through the outdoor inlet (131), and a deodorizing filter (155) provided on the other wall of the heat exchange unit (111) connected to an indoor inlet (133) within the device housing (110) which removes odors such as bad smells when air is discharged.

[0052] In addition, a damper section (120) can be mounted within the device housing (110) centered on the heat exchange section (111). In this embodiment, the damper section (120) may include a total of four dampers (121, 123, 125, 127). First, the first damper (121) is mounted between the lower part of one wall of the heat exchange section (111) where the deodorizing filter (155) is mounted and the first barrier wall (115), so that space partitioning can be achieved by the first damper (121).

[0053] The second damper (123) is installed between the lower part of the other wall of the heat exchanger (111) where the pre-filter (151) is installed and the second barrier wall (117), so that space partitioning can be achieved by the second damper (123). The third damper (125) is installed between the upper part of the heat exchanger (111) and the ceiling of the device housing (110), so that space partitioning can be achieved by the third damper (125). The fourth damper (127) is installed between the lower part of the heat exchanger (111) and the floor of the device housing (110), so that space partitioning can be achieved by the fourth damper (127).

[0054] In this way, a total of four dampers (121, 123, 125, 127) partition the inside of the device housing (110), and each damper (121, 123, 125, 127) normally remains in a closed state, but can change the airflow by selectively switching to an open state depending on the mode. This will be described in detail when explaining the various modes of the ventilation device (100).

[0055] Meanwhile, in order to generate airflow in this embodiment, fans (141, 145) are provided. First, the supply fan (141) is mounted at the bottom of the first barrier wall (115) as shown in FIG. 1 to generate airflow in the direction of the indoor supply port (135), and the exhaust fan (145) is mounted at the bottom of the second barrier wall (117) to generate airflow in the direction of the outdoor exhaust port (137).

[0056] As such, the ventilation device (100) of the present embodiment can selectively operate a total of four dampers (121, 123, 125, 127) of the ventilation unit (130), supply fan (141), exhaust fan (145), and damper unit (120) based on detection information of the sensor unit to perform operation optimized for each mode. Below, various modes of the ventilation device (100) of the present embodiment will be described with reference to the drawings.

[0057]

[0058] Figure 2 is a diagram illustrating the case where the ventilation device of Figure 1 is operated in a clean ventilation mode.

[0059] Referring to FIG. 2, when the ventilation device (100) is operated in a clean ventilation mode based on the air quality detection result by the sensor unit, air introduced through the outdoor inlet (131) is filtered as it passes through the pre-filter (151), and then, after heat exchange in the heat exchange unit (111), passes through the supply fan (141) and can be supplied through the indoor supply port (135). That is, an air flow in the direction of arrow A can be generated.

[0060] To elaborate, when carbon dioxide or fine dust is detected by the sensor unit, it can operate in a clean ventilation mode. Air introduced through the indoor inlet (133) is filtered by the pre-filter (151), then passes through the heat exchanger (111) to exchange thermal energy, and is supplied through the indoor supply port (135) by the supply fan (141), thereby allowing clean air to be supplied into the room.

[0061] At the same time, air introduced through the indoor inlet (133) passes through the deodorizing filter (155) to remove odors, and then, after heat exchange in the heat exchanger (111), passes through the exhaust fan (145) and can be discharged through the outdoor outlet (137). That is, an airflow in the direction of arrow B can be generated.

[0062] To elaborate, contaminated indoor air is introduced through the indoor inlet (133), and after the odor is removed in the deodorizing filter (155), heat exchange can be performed with the aforementioned outdoor air introduced in the heat exchanger (111). Afterward, the air is discharged through the outdoor outlet (137) by the exhaust fan (145), thereby allowing the contaminated indoor air to be discharged to the outside.

[0063] In this clean ventilation mode, the dampers (121, 123, 125, 127) of the damper unit (120) all remain closed, that is, in a non-operational state.

[0064]

[0065] Meanwhile, Fig. 3 is a diagram illustrating the case where the ventilation device of Fig. 1 operates in a rapid air supply mode.

[0066] Referring to FIG. 3, when the ventilation device (100) is operated in rapid supply mode based on the air quality detection result by the sensor unit, air introduced through the outdoor inlet (131) is filtered as it passes through the pre-filter (151), and then, after heat exchange in the heat exchange unit (111), passes through the supply fan (141) and can be supplied through the indoor supply port (135). That is, an airflow is generated in the direction of arrow C, thereby providing clean air to the indoors.

[0067] To elaborate, if the sensor unit determines that the measured values ​​of indoor VOCs, fine dust, carbon dioxide, etc., have stabilized as a result of detecting the air quality of the indoor space, but recognizes that the indoor humidity and temperature are significantly higher than the outdoor environment, the ventilation device (100) of this embodiment may operate in a rapid air supply mode. In other words, to improve the hot and humid indoor environment, outdoor air is temporarily supplied to the interior, and at the same time, the indoor air is also circulated.

[0068] In addition, the high-temperature and high-humidity air introduced through the indoor inlet (133) can pass through the deodorizing filter (155) to remove odors, and then the temperature can be lowered by heat exchange in the heat exchanger (111). Afterwards, the air can pass through the supply fan (141) via the open fourth damper (127) and then be supplied again through the indoor supply port (135). That is, an airflow is generated in the direction of arrow D.

[0069] At this time, the exhaust fan (145) does not operate, and only the supply fan (141) operates, for example, at 100% output.

[0070] This allows for the supply of air drawn in from the outside and the existing indoor air through recirculation, and can operate temporarily until the temperature and humidity difference between the indoor and outdoor environments reaches an internal set value.

[0071] In this rapid air supply mode, only the fourth damper (127) operates, and the remaining dampers, the first damper (121), the second damper (123), and the third damper (125), remain in a blocked state, that is, in a non-operating state.

[0072]

[0073] Meanwhile, Fig. 4 is a diagram illustrating the case where the ventilation device of Fig. 1 operates in a rapid exhaust mode.

[0074] For example, if normal ventilation is being performed by the ventilation device (100) of the present embodiment but the air quality of the indoor space does not continuously improve, or if a fire in the indoor space is detected by a flame detection sensor provided in the sensor unit, the ventilation device (100) of the present embodiment may immediately switch to a rapid exhaust mode.

[0075] Referring to FIG. 4, when the ventilation device (100) is operated in rapid exhaust mode as a result of detecting air quality by the sensor unit, air introduced through the indoor inlet (133) can be discharged through the outdoor outlet (137) by passing through the exhaust fan (145) through the open first damper (121) and the fourth damper (127). That is, an air flow in the direction of arrow E can be generated.

[0076] In addition, air introduced through the indoor supply port (135) by the operation of the exhaust fan (145) can pass through the open fourth damper (127) and the exhaust fan (145) and be discharged through the outdoor outlet (137). That is, an airflow in the direction of arrow F can be generated.

[0077] At this time, the exhaust fan (145) operates at 100% output so that a large amount of indoor air can be discharged. When the ventilation device (100) operates in this rapid exhaust mode, the inflow of air from the outside into the inside is blocked, so the supply fan (141) does not operate, and the second damper (123) and the third damper (125), which do not generate airflow, remain in a blocked state, that is, in a non-operating state.

[0078] This rapid exhaust mode automatically switches to the aforementioned clean ventilation mode when the air pollution level in the indoor space reaches the normal range of the set value.

[0079]

[0080] Meanwhile, Fig. 5 is a diagram illustrating the case where the ventilation device of Fig. 1 operates in rapid supply and exhaust modes.

[0081] In the case of the ventilation device (100) of the present embodiment, when first operated or when reactivated after being unused for a long period, it operates in a rapid supply and exhaust mode for a preset time by the control unit to identify whether there is an operational abnormality of the device and to self-check the indoor and outdoor air circulation status. In this mode, the ventilation device (100) operates at a maximum airflow temporarily and can detect the condition of the duct inside the device housing (110) and the indoor air quality.

[0082] Referring to FIG. 5, in the case of rapid supply and exhaust mode, air introduced through the outdoor inlet (131) is filtered as it passes through the pre-filter (151), and then, after heat exchange in the heat exchanger (111), passes through the supply fan (141) and can be supplied through the indoor supply port (135). That is, an airflow in the direction of arrow G can be generated.

[0083] In addition, air introduced through the indoor inlet (133) passes through the deodorizing filter (155) to remove odors, and then, after heat exchange in the heat exchanger (111), passes through the exhaust fan (145) and can be discharged through the outdoor outlet (137). This allows for airflow in the direction of arrow H to occur.

[0084] At this time, the supply fan (141) and the exhaust fan (145) operate at 100% output, and the damper unit (120) remains in a blocked state, i.e., in a non-operating state. After the time set for rapid supply and exhaust modes has elapsed, it can be automatically switched to clean ventilation mode.

[0085]

[0086] Figure 6 is a diagram illustrating the case where the ventilation device of Figure 1 operates in an internal circulation ventilation mode.

[0087] The internal circulation ventilation mode of the ventilation device (100) of the present embodiment is a mode in which only indoor air is continuously circulated when the sensor unit determines that the indoor air pollution level is significantly severe and the temperature difference between the indoor and outdoor air is, for example, 15°C or more.

[0088] Referring to FIG. 6, air introduced through the indoor inlet (133) passes through the deodorizing filter (155) to remove odors, then passes through the heat exchanger (111), through the open fourth damper (127), through the supply fan (141), and can be supplied through the indoor supply port (135). That is, an airflow in the direction of arrow I can be generated.

[0089] At this time, the supply fan (141) operates but the exhaust fan (145) does not operate, and the first damper (121), the second damper (123), and the third damper (125) remain in a blocked state, that is, in a non-operating state.

[0090] This internal circulation ventilation mode operates automatically based on the measurement value of the sensor unit only during summer or winter when the temperature difference between the indoor and outdoor environments is extreme, and the internal circulation ventilation mode can be operated automatically only when the pollution level of the indoor space measured by the sensor unit is in a stable state where clean outdoor air is not required.

[0091]

[0092] Meanwhile, Fig. 7 is a diagram illustrating the case where the ventilation device of Fig. 1 operates in an internal cleaning mode.

[0093] To elaborate, fine dust and pollutants may be present in the outdoor air entering the ventilation device (100) of the present embodiment, and when such pollutants enter the device housing (110), they may continuously accumulate in the pre-filter (151). The user must periodically clean and inspect this to prevent performance degradation of the ventilation device (100) so that the quality of the indoor air entering the device can be stably maintained due to increased contamination of the pre-filter (151).

[0094] Accordingly, the ventilation device (100) of the present embodiment can be operated in an internal cleaning mode that can automatically remove contaminants from the pre-filter (151) at regular intervals. It can be operated in an internal cleaning mode for a set operating time at a set time to regularly clean the pre-filter (151).

[0095] Referring to FIG. 7, air introduced through the outdoor inlet (131) can pass through the second damper (123) provided on one side of the pre-filter (151), pass through the exhaust fan (145), and be discharged through the outdoor outlet (137). That is, an airflow in the direction of arrow J can be generated.

[0096] At this time, contaminants attached to the pre-filter (151) can be kept clean by falling off the pre-filter (151) by the airflow and being discharged through the outdoor outlet (137).

[0097] In internal cleaning mode, the supply fan (141) does not operate and the exhaust fan (145) operates at 100% output, and the first damper (121), the third damper (125), and the fourth damper (127) remain in a blocked state, that is, in a non-operating state.

[0098]

[0099] Figure 8 is a diagram illustrating the case where the ventilation device of Figure 1 operates in a full cleaning mode.

[0100] When the ventilation device (100) of the present embodiment is used for a long time, foreign substances may remain in the areas within the barrier walls (115, 117) forming the duct within the device housing (110). Accordingly, in the present embodiment, the entire cleaning mode can be operated to remove any remaining foreign substances. In this mode, air supply to the indoor space is not provided, and air flow is generated in the entire duct within the device housing (110) and air can be discharged to the outside.

[0101] Referring to FIG. 8, when the entire cleaning mode is operated, air introduced through the outdoor inlet (131) can pass through the open second damper (123), pass through the exhaust fan (145), and be discharged through the outdoor outlet (137). That is, an airflow in the direction of arrow K can be generated.

[0102] In addition, air introduced through the indoor inlet (133) can pass through the open third damper (125) and second damper (123), pass through the exhaust fan (145), and be discharged through the outdoor outlet (137). That is, an airflow in the direction of arrow L can be generated.

[0103] Additionally, due to the operation of the exhaust fan (145), air introduced through the indoor supply port (135) can pass through the open fourth damper (127), pass through the exhaust fan (145), and be discharged through the outdoor outlet (137). That is, an airflow in the direction of arrow M can be generated.

[0104] This full cleaning mode can be operated periodically for a set amount of time, for example, once a month.

[0105]

[0106] Figure 9 is a diagram illustrating the case where the ventilation device of Figure 1 operates in a natural ventilation mode.

[0107] The natural ventilation mode of the ventilation device (100) of the present embodiment is a mode that operates, for example, in spring or autumn when the temperature difference between the indoor and outdoor environments is small, and can be operated only when the indoor air pollution level is significantly low. In the natural ventilation mode, clean outdoor air can be continuously supplied to the indoor environment, thereby minimizing heat energy loss in the indoor environment.

[0108] Referring to FIG. 9, in the natural ventilation mode of the present embodiment, air introduced through the outdoor inlet (131) is filtered as it passes through the pre-filter (151), then passes through the heat exchanger (111), passes through the supply fan (141), and can be supplied through the indoor supply port (135). That is, an air flow in the direction of the arrow N can be generated.

[0109] Accordingly, according to the present embodiment, by operating in a selected mode among various modes based on the air quality detected by the sensor unit, for example, a clean ventilation mode, a rapid air supply mode, a rapid air supply mode, a rapid air supply and exhaust mode, an internal circulation ventilation mode, an internal cleaning mode, a total cleaning mode, and a natural ventilation mode, the air quality of the indoor space can be kept clean and energy can be saved.

[0110]

[0111] Although specific embodiments according to the present invention have been described so far, it is obvious that various modifications are possible within the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims set forth below as well as equivalents thereof.

[0112] As described above, although the present invention has been explained by limited embodiments and drawings, the present invention is not limited to the above embodiments, and various modifications and variations are possible from this description by those skilled in the art to which the present invention belongs. Accordingly, the concept of the present invention should be understood only by the claims set forth below, and all equivalent or analogous variations thereof shall be considered to fall within the scope of the concept of the present invention.

Claims

1. A sensor unit that detects the air quality of the installed area; A device housing equipped with a heat exchanger for heat exchange between air discharged from indoors to outdoors and air supplied from outdoors to indoors, and a filter unit for air purification; A ventilation unit provided in the above device housing, comprising an outdoor inlet for introducing outdoor air into the above device housing, an indoor inlet for introducing indoor air into the above device housing, an indoor supply port for supplying the air introduced by the outdoor inlet or the indoor inlet into the indoor space, and an outdoor discharge port for discharging the air introduced by the outdoor inlet or the indoor inlet to the outside; and A damper section comprising a first damper mounted on one side of the heat exchanger within the device housing, a second damper mounted on the other side of the heat exchanger, a third damper mounted on the upper part of the heat exchanger, and a fourth damper mounted on the lower part of the heat exchanger; Includes, A ventilation device characterized by selectively operating at least one of the first damper, the second damper, the third damper, and the fourth damper provided in the damper unit based on air quality detection by the sensor unit to change the flow of air passing through the device housing.

2. In Paragraph 1, The above filter unit is, A pre-filter for removing foreign substances from the air, provided on one wall of the heat exchanger connected to the outdoor inlet within the device housing; and A ventilation device characterized by including a deodorizing filter provided on the other wall of the heat exchanger connected to the indoor inlet within the device housing, which removes odors when the air is discharged.

3. In Paragraph 1, The above device housing is, A first barrier wall equipped with a supply fan that creates an airflow so that air passing through the heat exchanger is directed toward the indoor supply port; and It includes a second barrier wall equipped with an exhaust fan that creates an airflow so that the air passing through the heat exchanger is directed toward the outdoor outlet, A ventilation device characterized in that the internal space of the device housing is partitioned by the first barrier wall and the second barrier wall.

4. In Paragraph 3, When the ventilation device is operated in a clean ventilation mode based on the air quality detection result by the sensor unit above, Air introduced through the above outdoor inlet is filtered as it passes through the above pre-filter, then undergoes heat exchange in the above heat exchanger, passes through the above supply fan, and is supplied through the above indoor supply port. Air introduced through the indoor inlet passes through the deodorizing filter to remove odors, then undergoes heat exchange in the heat exchanger, passes through the exhaust fan, and is discharged through the outdoor outlet. A ventilation device characterized by the above damper part not operating.

5. In Paragraph 3, When the ventilation device is operated in rapid air supply mode based on the air quality detection result by the sensor unit above, Air introduced through the above outdoor inlet is filtered as it passes through the above pre-filter, then undergoes heat exchange in the above heat exchanger, passes through the above supply fan, and is supplied through the above indoor supply port. Air introduced through the indoor inlet passes through the deodorizing filter to remove odors, and then, after heat exchange in the heat exchanger, passes through the supply fan via the fourth damper which is opened and is supplied through the indoor supply port. A ventilation device characterized in that the first damper, the second damper, and the third damper are not operated.

6. In Paragraph 3, When the ventilation device is operated in rapid exhaust mode based on the air quality detection result by the sensor unit above, Air introduced through the indoor inlet passes through the open first damper and the fourth damper, passes through the exhaust fan, and is discharged through the outdoor outlet. Air introduced through the indoor supply port by the operation of the exhaust fan passes through the open fourth damper and the exhaust fan, and is discharged through the outdoor outlet. A ventilation device characterized in that the second damper and the third damper are not operated.

7. In Paragraph 4, When the ventilation device is operated in rapid supply and exhaust modes based on the air quality detection result by the sensor unit above, Air introduced through the above outdoor inlet is filtered as it passes through the above pre-filter, then undergoes heat exchange in the above heat exchanger, passes through the above supply fan, and is supplied through the above indoor supply port. Air introduced through the indoor inlet passes through the deodorizing filter to remove odors, then undergoes heat exchange in the heat exchanger, passes through the exhaust fan, and is discharged through the outdoor outlet. The above supply fan and the above exhaust fan operate at 100% output, and The above damper part is not operated, and A ventilation device characterized by automatically switching to the clean ventilation mode after the time set in the rapid supply and exhaust modes has elapsed.

8. In Paragraph 3, When the ventilation device is operated in an internal circulation ventilation mode based on the air quality detection result by the sensor unit above, Air introduced through the indoor inlet passes through the deodorizing filter to remove odors, then passes through the heat exchanger, passes through the open fourth damper, passes through the supply fan, and is supplied through the indoor supply port. A ventilation device characterized in that the first damper, the second damper, and the third damper are not operated.

9. In Paragraph 3, When the ventilation device is operated in internal cleaning mode based on the air quality detection result by the sensor unit above, Air introduced through the outdoor inlet passes through the second damper provided on one side of the pre-filter, passes through the exhaust fan, and is discharged through the outdoor outlet. The above internal cleaning mode operates periodically for a set operating time at a set time, and The above exhaust fan operates at 100% output, and A ventilation device characterized in that the first damper, the third damper, and the fourth damper are not operated.

10. In Paragraph 3, When the ventilation device is operated in full cleaning mode based on the air quality detection result by the sensor unit above, Air introduced through the above outdoor inlet passes through the open second damper, passes through the exhaust fan, and is discharged through the above outdoor outlet, and Air introduced through the indoor inlet passes through the open third damper and the second damper, passes through the exhaust fan, and is discharged through the outdoor outlet, and Due to the operation of the exhaust fan, air introduced through the indoor supply port passes through the open fourth damper, passes through the exhaust fan, and is discharged through the outdoor outlet. A ventilation device characterized by the above-mentioned total cleaning mode operating periodically for a set operating time at a set time.

11. In Paragraph 3, When the ventilation device is operated in natural ventilation mode based on the air quality detection result by the sensor unit above, A ventilation device characterized in that air introduced through the outdoor inlet is filtered as it passes through the pre-filter, then passes through the heat exchanger, passes through the supply fan, and is supplied through the indoor supply outlet.

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