WO2023139725A1 - Système de ventilation à échange de chaleur - Google Patents

Système de ventilation à échange de chaleur Download PDF

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Publication number
WO2023139725A1
WO2023139725A1 PCT/JP2022/002009 JP2022002009W WO2023139725A1 WO 2023139725 A1 WO2023139725 A1 WO 2023139725A1 JP 2022002009 W JP2022002009 W JP 2022002009W WO 2023139725 A1 WO2023139725 A1 WO 2023139725A1
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WO
WIPO (PCT)
Prior art keywords
exhaust
air
air supply
blower
duct
Prior art date
Application number
PCT/JP2022/002009
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English (en)
Japanese (ja)
Inventor
耕平 長谷川
Original Assignee
三菱電機株式会社
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Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2022/002009 priority Critical patent/WO2023139725A1/fr
Publication of WO2023139725A1 publication Critical patent/WO2023139725A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems

Definitions

  • the present disclosure relates to a heat exchange ventilation system that performs ventilation while exchanging heat between supply airflow and exhaust airflow.
  • the air handling unit Due to its large size, the air handling unit has limited installation locations and requires special installation space such as a large machine room, rooftop or basement. If the air handling unit is to be installed on the roof or in the basement, a space is also required for pipework such as a duct that penetrates between floors. Therefore, the air handling unit takes up a large amount of space in the building.
  • the air handling unit uses a large blower, there is a risk that ventilation of the entire building will stop if a failure occurs.
  • the blower operates in a fixed manner regardless of the occupancy status inside the building, which is wasteful from the perspective of energy consumption.
  • Patent Document 1 discloses a ceiling-embedded heat exchange ventilation system in which a blower section including an exhaust blower and an air supply blower and a heat exchange section including a heat exchanger are separately arranged.
  • the heat exchanging ventilator disclosed in Patent Literature 1 makes it easy to secure an installation space by separating the blower section and the heat exchanging section.
  • a ceiling-embedded heat exchange ventilator such as that disclosed in Patent Document 1 cannot individually supply and exhaust air to a plurality of rooms because the fan section and the heat exchange section are paired.
  • the heat exchange ventilation fan installed in the ceiling needs to be thick enough to fit in the ceiling because it is limited by the space in the ceiling. Therefore, it is difficult to increase the size of the heat exchanger in order to increase the heat exchange efficiency.
  • the structure for facilitating disassembly is complicated in order to ensure maintainability. The complexity of the structure can also cause air leakage between supply air and exhaust air.
  • the ceiling-mounted heat exchange ventilation system cannot supply and exhaust air to multiple rooms individually, and it is difficult to increase the heat exchange efficiency and increase the air volume. Therefore, attempts are being made to use multiple heat exchange ventilation systems to ventilate the building.
  • each heat exchange ventilation device must be accessed individually during filter maintenance, which increases the time and cost required for filter maintenance.
  • the present disclosure has been made in view of the above, and an object thereof is to obtain a heat exchange ventilation system in which filter maintenance is easy and which can individually supply and exhaust air to a plurality of rooms.
  • the heat exchange ventilation system includes a plurality of blower sections that include a supply air blower with an supply air fan that generates an air supply flow and an exhaust air blower with an exhaust fan that generates an exhaust air flow, a heat exchanger section that includes a supply air flow path through which the supply air flow passes, an exhaust air flow path through which the exhaust flow passes, and a heat exchanger that exchanges heat between the supply air flow and the exhaust flow.
  • the heat exchange ventilation system comprises: a first supply air duct connecting an outside air port leading to the outdoors and a supply air passage; a first exhaust duct connecting the exhaust port leading to the outdoors and the exhaust air passage; a second air supply duct connecting the air supply blower of each of the plurality of blower units and the supply air passage; a second exhaust duct connecting each of the plurality of blower units and the exhaust air passage; , a third air supply duct that connects an air supply port installed in the air-conditioned space, and a third exhaust duct that connects each of the plurality of blower units and a return air port installed in the air-conditioned space.
  • the heat exchange ventilation system according to the present disclosure has the effect of facilitating maintenance of the filter and of being able to individually supply and exhaust air to a plurality of rooms.
  • FIG. 1 is a diagram showing the configuration of a heat exchange ventilation system according to Embodiment 1.
  • FIG. 2 is a diagram showing the configuration of the blower section of the heat exchange ventilation system according to Embodiment 1.
  • FIG. 4 shows a modification of the blower section of the heat exchange ventilation system according to Embodiment 1.
  • FIG. 1 Schematic diagram showing movement of bypass damper of heat exchange ventilation system according to Embodiment 1
  • FIG. 2 shows a connection state of the heat exchange ventilation system according to Embodiment 1.
  • FIG. FIG. 2 is a diagram showing a hardware configuration example of a control unit of the heat exchange ventilation system according to Embodiment 1;
  • FIG. 1 is a diagram showing the configuration of a heat exchange ventilation system according to Embodiment 1.
  • FIG. A heat exchange ventilation system 100 includes a plurality of blower sections 10 and heat exchanger sections 20 .
  • each of the plurality of blower units 10 is described as blower units 10a, 10b, 10c, and 10d for distinction.
  • Each of the plurality of blower units 10a, 10b, 10c, and 10d includes an air supply blower 11 and an exhaust blower 12. As shown in FIG.
  • the air supply fan 11 and the exhaust fan 12 may be separable or integrated.
  • blower unit 10a, 10b, 10c, and 10d is set as a master unit, and the rest are set as slave units.
  • the blower unit 10a is set as the master unit, and the blower units 10b, 10c, and 10d are set as slave units.
  • a remote controller 30a is connected to the blower unit 10a, which is a master unit.
  • a remote controller 30b is connected to the blower unit 10b, which is a slave unit. Further, a remote controller 30c is connected to the blower units 10c and 10d, which are slave units. Note that remote controllers may not be connected to the blower units 10b, 10c, and 10d, which are slave units.
  • the heat exchanger section 20 is connected to the first air supply duct 41 through an outside air port 51 leading to the outdoors. Also, the heat exchanger section 20 is connected to the first exhaust duct 42 through an exhaust port 52 leading to the outdoors.
  • the air supply blower 11 of each of the blower sections 10 a , 10 b , 10 c , 10 d is connected to the heat exchanger section 20 by a second air supply duct 43 .
  • Each exhaust fan 12 of the fan sections 10 a , 10 b , 10 c , 10 d is connected to the heat exchanger section 20 by a second exhaust duct 44 .
  • the air supply blower 11 of each of the blower units 10a, 10b, 10c, and 10d is connected by a third air supply duct 45 to an air supply port 53 installed in a room to be air-conditioned.
  • Each exhaust fan 12 of the fan units 10a, 10b, 10c, and 10d is connected by a third exhaust duct 46 to a return air port 54 installed in a room, which is a space to be air-conditioned.
  • the blower section 10a which is the master unit, is connected to the heat exchanger section 20 via a communication line 60.
  • the blower units 10a, 10b, 10c, and 10d are connected to each other by a communication line 70.
  • FIG. 1 is the figure in which the master unit is connected.
  • FIG. 2 is a diagram showing the configuration of the blower section of the heat exchange ventilation system according to the first embodiment.
  • the air supply blower 11 is equipped with an electric air supply damper 111 .
  • the exhaust blower 12 is equipped with an electric exhaust damper 121 .
  • the air supply damper 111 is closed while the air supply fan 11 is stopped, and opens when the air supply fan 11 starts operating.
  • the exhaust damper 121 closes while the exhaust fan 12 is stopped and opens when the exhaust fan 12 starts operating.
  • the air supply damper 111 is opened and closed by a damper motor 112 .
  • the exhaust damper 121 is opened and closed by a damper motor 122 .
  • the air supply damper 111 and the exhaust damper 121 are not limited to being electric.
  • air pressure dampers may be used for the air supply damper 111 and the exhaust damper 121, and the air supply damper 111 may be prevented from opening when the pressure in the room in which the air supply port 53 and the return air port 54 are arranged becomes positive, and the exhaust damper 121 may be prevented from opening when the pressure in the room in which the air supply port 53 and the return air port 54 are arranged becomes negative.
  • the air supply damper 111 is installed so as to cover the inlet of the air supply fan 11 .
  • the exhaust damper 121 is installed so as to cover the inlet of the exhaust fan 12 .
  • the air supply damper 111 does not have to be attached to the air supply fan 11 .
  • the exhaust damper 121 does not have to be attached to the exhaust fan 12 .
  • the air supply damper 111 and the air exhaust damper 121 may be installed at arbitrary positions on the flow path between the heat exchanger section 20 and the air supply port 53 or return air port 54 of each room.
  • the air supply damper 111 and the air exhaust damper 121 may be provided in the heat exchanger section 20, or may be installed in the air supply port 53 and the return air port 54 of each room.
  • the air supply damper 111 and the exhaust damper 121 are installed at the air supply port 53 or the return air port 54 on the space side to be air-conditioned.
  • the air supply damper 111 and the exhaust damper 121 are strong against the reverse pressure, and the structure can prevent circulation inside the heat exchanger unit 20.
  • the air supply blower 11 has a pressure sensor 114 downstream of the air supply fan 113 .
  • the exhaust fan 12 has a pressure sensor 124 downstream of the exhaust fan 123 .
  • a substrate box 15 containing a control unit 14 is installed on the side of the exhaust fan 12 side. Inside the board box 15 , power supply lines to the air supply fan 11 and the exhaust fan 12 are connected to the controller 14 . From the control unit 14, power is supplied and wiring is performed to the fan motors 115 and 125 of the air supply fan 11 and the exhaust fan 12, the detection tubes of the pressure sensors 114 and 124, and the damper motors 112 and 122 for driving the air supply damper 111 and the exhaust damper 121, respectively.
  • the static pressure created by the air supply blower 11 makes the pressure downstream of the air supply blower 11 positive and the pressure upstream of the air supply blower 11 negative.
  • the negative pressure generated by the air supply fan 11 requesting operation with a large air volume may cause the air flow to flow back to the air supply fan 11 requesting operation with a small air volume due to the difference in negative pressure near the air supply suction port of the heat exchanger unit 20.
  • pressure sensors 114 and 124 are installed in the air supply fan 11 and the exhaust fan 12 . While the air supply fan 11 is in operation, the fan motor 115 is controlled so that the pressure detected by the pressure sensor 114 is kept positive. By controlling the fan motor 115 based on the detection result of the pressure sensor 114, it is possible to prevent the occurrence of backflow of air in the duct due to the difference in the air volume of the air supply blower 11. FIG.
  • a pressure sensor 124 is installed downstream of the exhaust fan 123 on the exhaust side, and the fan motor 125 is controlled so that the pressure detected by the pressure sensor 124 remains positive while the exhaust blower 12 is in operation.
  • the fan motor 125 By controlling the fan motor 125 based on the detection result of the pressure sensor 124, it is possible to prevent the occurrence of backflow of air in the duct due to the difference in the air volume of the exhaust blower 12 and the decrease in the air volume. Further, by controlling the fan motor 125 so that the pressure detected by the pressure sensor 124 becomes a constant positive pressure, it is possible to keep the air volume of the exhaust blower 12 constant.
  • control unit 14 stores the relational expression between the air volume passing through the air supply fan 11 and the exhaust air fan 12 and the pressure detected by the pressure sensors 114 and 124, and controls the fan motors 115 and 125 so that the pressure detected by the pressure sensors 114 and 124 matches the required air volume level according to the required air volume level.
  • the air supply fan 11 and the exhaust fan 12 equipped with the pressure sensors 114 and 124 are effective.
  • the system cost can be reduced by lining up the air supply fan 11 and the exhaust fan 12 without the pressure sensors 114 and 124.
  • a thermistor 126 that detects the room temperature is installed in a portion of the exhaust fan 12 upstream of the exhaust fan 123 in the flow of the exhaust flow.
  • the thermistor 126 detects the temperature of the indoor air and transmits temperature information to the controller 14 .
  • FIG. 3 is a diagram showing a modification of the blower section of the heat exchange ventilation system according to Embodiment 1.
  • FIG. Pressure sensors 116 and 127 are also installed in a portion of the air supply fan 11 upstream of the air supply fan 113 and a portion of the exhaust fan 12 upstream of the exhaust fan 123, respectively.
  • the control unit 14 controls the air supply blower 11 and the exhaust blower 12 so that the pressure difference between the pressure on the upstream side and the pressure on the downstream side of the air supply fan 113 and the pressure difference between the pressure on the upstream side and the pressure on the downstream side of the exhaust fan 123 are each equal to or less than a preset threshold. By doing so, the controller 14 can keep the air supply volume and the exhaust air volume constant.
  • FIG. 4 is a side view of the air-conditioned space side of the heat exchanger section of the heat exchange ventilation system according to Embodiment 1.
  • FIG. 5 is a side view of the outdoor side of the heat exchanger section of the heat exchange ventilation system according to Embodiment 1.
  • FIG. 6 is a side view of the filter attachment/detachment port side of the heat exchanger section of the heat exchange ventilation system according to Embodiment 1.
  • FIG. 7 is a top view of the heat exchanger section of the heat exchange ventilation system according to Embodiment 1.
  • FIG. 7 illustration of the top surface of the housing 21 of the heat exchanger unit 20 is omitted, and the inside is visualized.
  • FIG. 7 illustration of the top surface of the housing 21 of the heat exchanger unit 20 is omitted, and the inside is visualized.
  • FIG. 8 is a schematic diagram showing the movement of the bypass damper of the heat exchange ventilation system according to Embodiment 1.
  • the heat exchanger unit 20 includes a parallelepiped housing 21 and a heat exchanger 22 housed inside the housing 21 .
  • a partition plate 25 that separates the supply air passage 23 and the exhaust air passage 24 is installed inside the housing 21 .
  • a bypass air passage 26 for bypassing the heat exchanger 22 is provided in the supply air passage 23 .
  • the heat exchanger section 20 includes an electric bypass damper 27 that opens and closes the bypass air passage 26 . By opening the bypass damper 27, the bypass air passage 26 is opened, but the air passage leading to the heat exchanger 22 is not closed. Therefore, operation with low pressure loss is possible, and reduction in power consumption can be realized.
  • the bypass damper 27 has a structure that opens toward the outside air side, and is difficult to open due to the negative pressure when the air supply blower 11 pulls.
  • duct connection ports 211a and 212a for connection with the blower sections 10a, 10b, 10c, and 10d are formed on the side surface 21a of the housing 21 of the heat exchanger section 20 on the air-conditioned space side.
  • a first air supply duct 41 is connected to the air supply duct connection port 211a. Therefore, the supply air passage 23 is connected to the blower sections 10a, 10b, 10c and 10d via the first supply duct 41.
  • a first exhaust duct 42 is connected to the exhaust duct connection port 212a. Therefore, the exhaust air passage 24 is connected to the blower sections 10a, 10b, 10c, and 10d via the first exhaust duct 42.
  • the heat exchanger section 20 may be provided with a connection port attachment for connection with a square duct so as to be compatible with a pipe branching from the middle with a round duct in a chamber system. That is, there is one second air supply duct 43 at the connection portion with the air supply duct connection port 211a of the heat exchanger section 20, and it may branch between the heat exchanger section 20 and each of the plurality of blower sections 10a, 10b, 10c, and 10d.
  • duct connection ports 211b and 212b larger than the duct connection ports 211a and 212a are formed on the outdoor side surface 21b of the housing 21 of the heat exchanger unit 20, so that a collective duct can be connected to the outside air.
  • a first air supply duct 41 is connected to the air supply duct connection port 211b. Therefore, the supply air passage 23 is connected to the outside air port 51 via the first supply air duct 41 .
  • a first exhaust duct 42 is connected to the exhaust duct connection port 212b. Therefore, the exhaust air passage 24 is connected to the exhaust port 52 via the first exhaust duct 42 .
  • the heat exchanger section 20 includes an air supply filter 28 and an exhaust filter 29 .
  • a filter attachment/detachment opening is provided on the side surface 21 c of the housing 21 so that the air supply filter 28 and the exhaust filter 29 can be pulled out from the side surface 21 c of the housing 21 . Illustration of the filter attachment/detachment opening is omitted.
  • the heat exchanger section 20 can also be placed vertically.
  • the side surface 21c faces upward so that the air supply filter 28 and the exhaust filter 29 can be drawn upward.
  • the bypass damper 27 has a structure in which it is rotated obliquely upward and pulled up or slid obliquely upward so that it does not open by its own weight whether the heat exchanger section 20 is placed horizontally or vertically.
  • the heat exchanger section 20 is provided with a hanging fitting 90 that can be fixed to an anchor in either a horizontal state in which the first air supply duct 41, the first exhaust duct 42, the second air supply duct 43, and the second exhaust duct 44 are connected horizontally, or a vertical state in which the first air supply duct 41, the first exhaust duct 42, the second air supply duct 43, and the second exhaust duct 44 are connected vertically.
  • the hanging metal fitting 90 has a structure in which a notch 91 for inserting an anchor is opened in the air flow direction so that the number of support points is not reduced when the heat exchanger section 20 is placed vertically.
  • the air supply filter 28 and the exhaust filter 29 are not laid on the surface of the heat exchanger 22 in order to reduce surface wind speed, but are separated from the heat exchanger 22 and have a large surface area inside the housing 21. Consolidating the filters in the heat exchanger section 20 eliminates the need for maintenance of the blower sections 10a, 10b, 10c, and 10d, making it possible to reduce the cost and time required for maintenance.
  • a thermistor 31 for detecting outside air temperature is installed in a portion upstream of the heat exchanger 22 in the supply air passage 23 .
  • a thermistor 32 for detecting indoor air temperature is installed in a portion of the exhaust air passage 24 upstream of the heat exchanger 22 .
  • FIG. 9 is a diagram showing the connection state of the heat exchange ventilation system according to the first embodiment.
  • the control unit 14 of the blower unit 10a set as the master unit is connected to the thermistor 31 for outside air temperature, the thermistor 32 for detecting the room temperature, and the damper motor 27a installed in the heat exchanger unit 20 via a communication line 60.
  • the control unit 14 of the blower unit 10a which is the master unit that received the temperature information, determines whether to perform bypass ventilation or heat exchange ventilation based on the outside air temperature and the room temperature, and drives the damper motor 27a to open and close the bypass air passage 26.
  • the criterion for determining whether to use bypass ventilation or heat exchange ventilation is variable, and the criterion can be set from the remote controller 30a connected to the blower section 10a, which is the master unit. Note that the determination criteria can be set only by the remote controller 30a connected to the blower unit 10a, which is the master unit.
  • the control unit 14 performs control such as stopping the air supply blower 11 for protective operation or performing intermittent operation when the outside air temperature is too low.
  • the controllers 14 of the blower units 10b, 10c, and 10d that are child units are connected to the controller 14 of the blower unit 10a that is the master unit via a communication line 70, and upon receiving a protective operation instruction from the master unit through the communication line 70, perform protective operation.
  • the controllers 14 of the slave units 10b, 10c, and 10d that receive the temperature information from the controller 14 of the master blower unit 10a may determine whether or not to perform the protection operation.
  • the remote controllers 30a, 30b, 30c By operating the remote controllers 30a, 30b, 30c, it is possible to stop the operation of the blower units 10a, 10b, 10c, 10d and switch between heat exchange ventilation and bypass ventilation. After stopping the operation of the blower units 10a, 10b, 10c, and 10d and setting switching between heat exchange ventilation and bypass ventilation, if a new setting operation is performed on another remote controller 30a, 30b, or 30c, the latest setting operation is given priority.
  • blower units 10b, 10c, and 10d which are slave units, can be operated in conjunction with the blower unit 10a which is the master unit.
  • each of the blower units 10a, 10b, 10c, and 10d has an independent control unit 14, and the blower unit 10a, which is one of the blower units 10a, 10b, 10c, and 10d, serves as a master unit and also controls the bypass damper 27 of the heat exchanger unit 20.
  • the configuration for cooperative control has been described, it is not limited to this.
  • a single control circuit that controls the heat exchange ventilation system 100 may be provided, and the control circuit that controls the fan units 10a, 10b, 10c, and 10d may be directly controlled.
  • the blower units 10a, 10b, 10c, and 10d may be provided with the control unit 14, and the control unit 14 of each of the fan units 10a, 10b, 10c, and 10d may perform control based on a control signal received from the overall control circuit.
  • the controlling circuit may be provided in the heat exchanger section 20, or may be provided separately from the blower sections 10a, 10b, 10c, 10d and the heat exchanger section 20.
  • the blower units 10a, 10b, 10c, and 10d and the heat exchanger unit 20 are separated, so that the blower units 10a, 10b, 10c, and 10d can be installed in the ceiling space, and the heat exchanger unit 20 can be suspended in a machine room or the like, so that it can be installed in a small space.
  • the blower portions 10a, 10b, 10c, 10d and the heat exchanger portion 20 are separated, the weight of each of the blower portions 10a, 10b, 10c, 10d and the heat exchanger portion 20 is reduced compared to a heat exchange ventilator in which the blower portion and the heat exchanger portion are integrated.
  • the thickness can be reduced as compared with a heat exchange ventilator in which the blower section and the heat exchanger section are integrated. Therefore, the installation positions of the blower units 10a, 10b, 10c, and 10d and the installation position of the heat exchanger unit 20 can be arbitrarily selected according to the structure of the building in which the heat exchange ventilation system 100 is installed. Further, since the operation of the plurality of blower units 10a, 10b, 10c, and 10d can be individually stopped, each room can be individually supplied and exhausted. Also, when the amount of air supplied and exhausted by the heat exchange ventilation system 100 as a whole is small, by driving only some of the blower units 10a, 10b, 10c, and 10d, operation with high heat exchange efficiency and low pressure loss is possible. Further, by increasing or decreasing the number of blower units 10a, 10b, 10c, and 10d, the air volume of the heat exchange ventilation system 100 as a whole can be adjusted, and a wide range of air volumes can be accommodated.
  • the heat exchange ventilation system 100 according to Embodiment 1 includes a plurality of blower units 10a, 10b, 10c, and 10d, the noise generated by each of the blower units 10a, 10b, 10c, and 10d can be suppressed as compared to an air handling unit using a blower with a large air volume.
  • FIG. 10 is a diagram illustrating a hardware configuration example of a control unit of the heat exchange ventilation system according to Embodiment 1.
  • FIG. 10 shows a hardware configuration in which the functions of the control unit 14 are realized by using hardware that executes programs.
  • the control unit 14 has a processor 81 that executes various processes, a memory 82 that is an internal memory, and a storage device 83 that stores information.
  • the processor 81 reads a program stored in the storage device 83 to the memory 82 and executes it.
  • the processor 81 reads the program stored in the storage device 83 into the memory 82 and executes it, thereby realizing the function of the control unit 14 that controls the air supply fan 11 and the exhaust fan 12 .
  • the configuration shown in the above embodiment shows an example of the contents, and it is possible to combine it with another known technology, and it is also possible to omit or change a part of the configuration without departing from the gist.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Central Air Conditioning (AREA)

Abstract

La présente invention concerne un système de ventilation à échange de chaleur (100) comprenant : une pluralité d'unités de soufflante (10) comprenant chacune une soufflante d'alimentation en air (11) qui génère un flux d'air d'alimentation et une soufflante d'évacuation (12) qui génère un flux d'air d'évacuation ; une unité d'échangeur de chaleur (20) équipée d'un trajet d'alimentation en air à travers lequel passe le flux d'air d'alimentation, d'un trajet d'évacuation à travers lequel passe le flux d'air d'évacuation, et d'un échangeur de chaleur qui échange de la chaleur entre le flux d'air d'alimentation et le flux d'air d'échappement ; un premier conduit d'alimentation en air (41) qui raccorde un orifice d'air extérieur (51) au trajet d'alimentation en air ; un premier conduit d'évacuation (42) qui raccorde un orifice d'évacuation (52) au trajet d'échappement ; un deuxième conduit d'alimentation en air (43) qui raccorde la soufflante d'alimentation en air (11) de chacune de la pluralité d'unités de soufflante (10) au trajet d'alimentation en air ; un deuxième conduit d'évacuation (44) qui raccorde la soufflante d'évacuation (12) de chacune de la pluralité d'unités de soufflante (10) au trajet d'évacuation ; un troisième conduit d'alimentation en air (45) qui raccorde chacune de la pluralité d'unités de soufflante (10) à un orifice d'alimentation en air (53) ; et un troisième conduit d'échappement (46) qui raccorde chacune de la pluralité d'unités de soufflante (10) à un orifice de retour d'air (54).
PCT/JP2022/002009 2022-01-20 2022-01-20 Système de ventilation à échange de chaleur WO2023139725A1 (fr)

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PCT/JP2022/002009 WO2023139725A1 (fr) 2022-01-20 2022-01-20 Système de ventilation à échange de chaleur

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PCT/JP2022/002009 WO2023139725A1 (fr) 2022-01-20 2022-01-20 Système de ventilation à échange de chaleur

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10246488A (ja) * 1997-03-07 1998-09-14 Matsushita Seiko Co Ltd ダクト用換気扇
JP2005049024A (ja) * 2003-07-29 2005-02-24 Sanki Eng Co Ltd 空調設備
WO2020213658A1 (fr) * 2019-04-15 2020-10-22 ダイキン工業株式会社 Système de traitement de l'air

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10246488A (ja) * 1997-03-07 1998-09-14 Matsushita Seiko Co Ltd ダクト用換気扇
JP2005049024A (ja) * 2003-07-29 2005-02-24 Sanki Eng Co Ltd 空調設備
WO2020213658A1 (fr) * 2019-04-15 2020-10-22 ダイキン工業株式会社 Système de traitement de l'air

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