WO2021240814A1 - Ventilateur du type à échange de chaleur - Google Patents

Ventilateur du type à échange de chaleur Download PDF

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Publication number
WO2021240814A1
WO2021240814A1 PCT/JP2020/021453 JP2020021453W WO2021240814A1 WO 2021240814 A1 WO2021240814 A1 WO 2021240814A1 JP 2020021453 W JP2020021453 W JP 2020021453W WO 2021240814 A1 WO2021240814 A1 WO 2021240814A1
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WIPO (PCT)
Prior art keywords
air passage
exhaust
air
heat exchange
heat exchanger
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Application number
PCT/JP2020/021453
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English (en)
Japanese (ja)
Inventor
啓志 津田
耕平 松本
Original Assignee
三菱電機株式会社
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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/JP2020/021453 priority Critical patent/WO2021240814A1/fr
Priority to JP2022527466A priority patent/JP7309066B2/ja
Publication of WO2021240814A1 publication Critical patent/WO2021240814A1/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 type ventilator equipped with a heat exchanger that exchanges heat between the airflow flowing through the air supply air passage and the exhaust air passage.
  • the heat exchange type ventilation device has heat exchange ventilation for exchanging heat between the airflow airflowing between the air supply air passage and the exhaust air passage, and heat exchange between the airflow flowing between the air supply air passage and the exhaust air passage.
  • heat exchange ventilation There are models that can switch between non-heat exchange ventilation and not.
  • the air passage at the time of stopping is controlled so as to maintain the air passage in the heat exchange ventilation state. Therefore, when there is a pressure difference between the indoor and outdoor areas of the heat exchange type ventilator as the ventilation target space and the indoor pressure is negative, the outside air flows through the air passage of the heat exchange type ventilator. It flows into the room. Then, the outside air flowing into the room passes through the heat exchanger.
  • the heat exchange type ventilator will unintentionally take in the air.
  • water is condensed inside the heat exchanger, and the condensed water adheres to the inside of the heat exchanger, so that the deterioration of the heat exchanger is accelerated.
  • the negative pressure in the room is constantly generated due to local ventilation by other ventilation devices installed in the room, the negative pressure in the room causes a condition that makes it difficult to open the door and the room. There is concern about the occurrence of drafts.
  • Patent Document 1 describes that excessive negative pressure in a room is suppressed by stopping and operating the exhaust of the heat exchange type ventilation device according to the operation and stop operation of local ventilation.
  • the present disclosure has been made in view of the above, and heat exchange caused by the inflow of outside air at the time of stop without the need for additional air supply equipment such as a ventilation fan or a pass duct as a measure against negative pressure in the room at the time of stop.
  • the purpose is to obtain a heat exchange type ventilation device that can suppress the deterioration of the equipment.
  • the heat exchange type ventilation device includes an exhaust air passage for exhausting indoor air to the outside and a supply air passage for supplying outdoor air to the room.
  • an exhaust blower provided in the exhaust air passage to generate an exhaust flow flowing through the exhaust air passage
  • an exhaust blower provided in the air supply air passage to generate an air supply air flowing through the air supply air passage. It is provided with a supply air blower and a heat exchanger provided straddling the supply air passage and the exhaust air passage to exchange heat between the supply air flow and the exhaust flow.
  • the heat exchange type ventilation device includes a bypass air passage that is attached to the air passage that passes through the heat exchanger in at least one of the exhaust air passage and the air supply air passage and bypasses the heat exchanger, and an air passage that passes through the heat exchanger. It is provided with a air passage switching damper for switching between the air passage and the bypass air passage, and a control unit for controlling the operation of the exhaust blower, the operation of the supply air blower, and the operation of the air passage switching damper. The control unit arranges the air passage switching damper at an open position where the bypass air passage is opened when the operation of the air supply blower and the exhaust blower is stopped.
  • the heat exchange type ventilator according to the present disclosure does not require the addition of air supply equipment such as a ventilation fan or a pass duct as a measure against negative pressure in the room at the time of stop, and deteriorates the heat exchanger due to the inflow of outside air at the time of stop. It has the effect of being able to suppress it.
  • a perspective view showing a heat exchange type ventilator according to the first embodiment The figure which shows typically the inside of the heat exchange type ventilation apparatus which concerns on Embodiment 1.
  • the conceptual diagram which shows the image of the flow of the exhaust flow at the time of the heat exchange ventilation operation in the heat exchange type ventilation apparatus which concerns on Embodiment 1.
  • Conceptual diagram showing an image of the flow of the exhaust flow during the non-heat exchange ventilation operation of the heat exchange type ventilation device according to the first embodiment.
  • FIG. 1 is a first diagram showing an example of a hardware configuration of a control unit included in the heat exchange ventilator according to the first embodiment.
  • FIG. 2 is a second diagram showing an example of a hardware configuration of a control unit included in the heat exchange ventilation device according to the first embodiment.
  • FIG. 1 is a perspective view showing a heat exchange type ventilation device according to the first embodiment.
  • FIG. 2 is a diagram schematically showing the inside of the heat exchange type ventilation device according to the first embodiment.
  • the heat exchange type ventilation device 1 is a device capable of performing ventilation while exchanging heat between the supply air flow and the exhaust flow.
  • the heat exchange type ventilation device 1 maintains a comfortable indoor air environment by ventilating the room by supplying air from the outside to the room and exhausting air from the room to the outside. Further, the heat exchange type ventilation device 1 reduces the temperature difference between the air taken into the room and the air in the room by exchanging heat between the supply air flow and the exhaust flow, and reduces the burden of air conditioning in the room.
  • the heat exchange type ventilator 1 is installed in the space behind the ceiling.
  • FIG. 1 shows a heat exchange type ventilator 1 in a state where the top plate 3 is removed from the casing 5.
  • the heat exchange type ventilator 1 is installed with the top plate 3 facing vertically upward.
  • a supply air suction port 13 and an exhaust air outlet 14 are provided on one side surface of the casing 5.
  • a supply air outlet 15 and an exhaust suction port 16 are provided on the side surface of the casing 5 facing the side surface.
  • An outdoor air supply duct (not shown) that communicates the outdoor side with the air supply suction port 13 is connected to the supply air suction port 13.
  • An indoor air supply duct (not shown) that communicates the room with the air supply outlet 15 is connected to the air supply outlet 15.
  • An exhaust duct on the indoor side (not shown) that communicates the interior with the exhaust suction port 16 is connected to the exhaust suction port 16.
  • An outdoor exhaust duct (not shown) that connects the outdoor side and the exhaust air outlet 14 is connected to the exhaust air outlet 14.
  • the outside air is taken into the supply air passage 31 from the supply air suction port 13 via the outdoor air supply duct.
  • the outside air taken into the air supply air passage 31 is blown out into the room from the air supply air outlet 15 through the air supply duct on the indoor side through the air supply air passage 31.
  • the air in the room is taken into the exhaust air passage 32 from the exhaust suction port 16 through the exhaust duct on the indoor side.
  • the air taken into the exhaust air passage 32 is blown out to the outside through the exhaust air passage 32, from the exhaust outlet 14, and through the outdoor exhaust duct. That is, the exhaust air passage 32 for exhausting the indoor air to the outside and the air supply air passage 31 for supplying the outdoor air to the room are independently formed inside the casing 5.
  • the heat exchanger 2 is provided so as to straddle the supply air passage 31 and the exhaust air passage 32, and exchanges all heat between the supply air flow and the exhaust flow.
  • the heat exchanger 2 has a primary side air passage through which the exhaust flow passes and a secondary side air passage through which the supply air flow passes. Inside the heat exchanger 2, the temporary side air passage and the secondary side air passage intersect vertically.
  • the primary side air passage and the secondary side air passage are formed by a laminated body in which flat paper and corrugated paperboard corrugated sheets are alternately laminated and bonded. In FIG. 1, the illustration of the primary side air passage and the secondary side air passage is omitted.
  • the laminate has a quadrangular prism shape.
  • the end faces of the heat exchanger 2 located at both ends in the stacking direction are square.
  • the stacking direction is the direction in which the flat plate paper and the corrugated sheet are laminated.
  • the heat exchanger 2 has four ridges parallel to the stacking direction.
  • the heat exchanger 2 is housed in the casing 5 so that each ridge line portion faces each of the top plate 3, the bottom plate 4, the partition wall 17, and the partition wall 18. That is, in the heat exchanger 2, the diagonal lines of the end faces located at both ends of the heat exchanger 2 are oriented in the vertical direction and the horizontal direction in a state where the axial direction of the square pillar shape is laterally oriented in the central region inside the casing 5. It has been incorporated.
  • the supply air passage 31 is an air passage for supplying outside air, which is outdoor air, into the room, and is an upstream side supply air passage 31a formed between the supply air suction port 13 and the heat exchanger 2. It has a downstream air supply air passage 31b formed between the heat exchanger 2 and the air supply outlet 15, and an air air supply air passage 31c in the heat exchanger, which is an air supply air passage 31 in the heat exchanger 2. ing. That is, the upstream air supply air passage 31a is an upstream air supply air passage that is upstream of the heat exchanger 2 in the air supply air passage 31 and communicates with the outside of the room. Further, the downstream air supply air passage 31b is a downstream air supply air passage that is on the downstream side of the heat exchanger 2 in the air supply air passage 31 and communicates with the room.
  • the exhaust air passage 32 is an air passage for exhausting the return air, which is indoor air, to the outside of the room, and heat exchanges with the upstream exhaust air passage 32a formed between the exhaust suction port 16 and the heat exchanger 2. It has a downstream exhaust air passage 32b formed between the vessel 2 and the exhaust outlet 14, and an exhaust air passage 32c in the heat exchanger, which is an exhaust air passage 32 in the heat exchanger 2. That is, the upstream exhaust air passage 32a is an upstream exhaust air passage that is on the upstream side of the heat exchanger 2 and communicates with the room. Further, the downstream exhaust air passage 32b is an exhaust air passage on the downstream side of the heat exchanger 2 and communicating with the outside of the room.
  • the exhaust air passage 32 configured in this way is a heat exchange exhaust air passage that connects the exhaust suction port 16 and the exhaust outlet 14 via the heat exchanger 2 and exhausts the indoor air to the outside.
  • the heat exchange type ventilator 1 has a supply air blower 11 that takes in outdoor air and sends the taken-in air into the room, and an exhaust blower 12 that takes in the indoor air and sends the taken-in air to the outside.
  • the supply air blower 11 is arranged in the downstream side supply air passage 31b, and generates a flow of air supply from the supply air suction port 13 to the supply air outlet 15.
  • the air supply blower 11 includes a centrifugal multi-blade blade and an air supply electric motor for rotating the centrifugal multi-blade blade inside the air supply blower casing 7.
  • the air supply blower 11 generates an air supply by rotating the centrifugal multi-blade blades with an air supply electric motor. In the figure, the centrifugal multi-blade blade and the air supply motor are not shown.
  • the operation, stop, and rotation speed of the air supply electric motor are controlled by the control unit 35, which will be described later, and the operation operation is controlled by the control unit 35.
  • the air supply air blower casing 7 forms the scroll casing of the air supply air blower 11 and constitutes a partition wall 18 that separates the air supply air passage 31 and the exhaust air passage 32.
  • the exhaust blower 12 is arranged in the downstream exhaust air passage 32b, and generates an exhaust flow from the exhaust suction port 16 to the exhaust outlet 14.
  • the exhaust blower 12 includes a centrifugal multi-blade blade and an exhaust electric motor for rotating the centrifugal multi-blade blade inside the exhaust blower casing 8.
  • the exhaust blower 12 generates an exhaust flow by rotating the centrifugal multi-blade blades with an exhaust electric motor. In the figure, the centrifugal multi-blade blade and the exhaust motor are not shown.
  • the operation, stop, and rotation speed of the exhaust electric motor are controlled by the control unit 35, which will be described later, and the operation operation is controlled by the control unit 35.
  • the exhaust blower casing 8 forms a scroll casing of the exhaust blower 12 and constitutes a partition wall 17 that separates the air supply air passage 31 and the exhaust air passage 32.
  • a maintenance cover is provided on the front surface of the casing 5, which is one of the side surfaces other than the side surface having the air supply air inlet 13 and the exhaust air outlet 14 and the side surface having the air supply air outlet 15 and the exhaust air inlet 16. 6 and a control unit 9 are provided.
  • the maintenance cover 6 is provided at a position facing the end surface of one of the heat exchangers 2. By opening the maintenance cover 6, the heat exchanger 2 can be pulled out from the inside of the casing 5 to the outside of the casing 5 and inserted from the outside of the casing 5 into the inside of the casing 5.
  • the control unit 9 controls the entire heat exchange type ventilation device 1.
  • a guide rail 21, a guide rail 22, a guide rail 23, and a guide rail 24 that support the heat exchanger 2 are provided inside the casing 5.
  • the guide rail 21 is provided on the top plate 3.
  • One of the four ridges facing the top plate 3 is inserted into the guide rail 21.
  • the guide rail 22 is provided on the bottom plate 4.
  • One of the four ridges facing the bottom plate 4 is inserted into the guide rail 22.
  • the guide rail 23 is provided on the partition wall 17.
  • One of the four ridges facing the partition wall 17 is inserted into the guide rail 23.
  • the guide rail 24 is provided on the partition wall 18.
  • One of the four ridges facing the partition wall 18 is inserted into the guide rail 24.
  • the inside of the casing 5 is divided into four independent spaces separated from each other by the heat exchanger 2, the guide rails 21, 22, 23, 24, and the partition walls 17, 18, and the four spaces are supplied to the upstream side.
  • FIG. 3 is a conceptual diagram showing an image of the flow of the exhaust flow during the heat exchange ventilation operation in the heat exchange type ventilation device according to the first embodiment.
  • FIG. 4 is a conceptual diagram showing an image of the flow of the exhaust flow during the non-heat exchange ventilation operation of the heat exchange type ventilation device according to the first embodiment.
  • the arrows in FIGS. 3 and 4 indicate the flow of airflow.
  • the exhaust side bypass air passage 50 is a bypass air passage which is attached to the air passage passing through the heat exchanger 2 in the exhaust air passage 32 which is a heat exchange exhaust air passage and bypasses the heat exchanger 2. It is formed.
  • the exhaust side bypass air passage 50 is an air passage that bypasses the heat exchanger 2 and connects the upstream side exhaust air passage 32a and the downstream side exhaust air passage 32b, and is connected to the exhaust outlet 14 without passing through the heat exchanger 2. It is a bypass air passage for flowing the exhaust flow.
  • the exhaust side bypass air passage 50 is a non-heat exchange air passage that does not pass through the heat exchanger 2.
  • the exhaust side non-heat exchange air passage 101 which is a connected non-heat exchange air passage, is formed inside the casing 5.
  • the heat exchange type ventilation device 1 causes the exhaust flow, which is the airflow of the indoor air sucked from the exhaust suction port 16, to flow through the exhaust air passage 32, which is the heat exchange exhaust air passage, and passes through the heat exchanger 2, thereby forming the air supply.
  • Heat exchange ventilation with heat exchange with the exhaust flow can be performed.
  • the exhaust flow which is the airflow of the indoor air sucked from the exhaust suction port 16 is passed through the exhaust side bypass air passage 50 of the exhaust side non-heat exchange air passage 101 and passed through the heat exchanger 2.
  • the exhaust air passage 32 and the exhaust side bypass air passage 50 are branched to switch between the air passage passing through the heat exchanger 2 in the exhaust air passage 32 and the exhaust side bypass air passage 50.
  • An electric first air passage switching damper 51 which is a damper, is provided.
  • the first air passage switching damper 51 can be rephrased as a damper for switching between the exhaust air passage 32 and the exhaust side non-heat exchange air passage 101.
  • the first air passage switching damper 51 has a rotation shaft at the branch point between the exhaust air passage 32 and the exhaust side bypass air passage 50, and whether or not the indoor air sucked from the exhaust suction port 16 is passed through the heat exchanger 2. It constitutes an air passage switching unit that switches between the exhaust air passage 32 and the exhaust side bypass air passage 50.
  • the first air passage switching damper 51 is made of, for example, a plate that rotates inside the upstream exhaust air passage 32a, and can switch between the exhaust air passage 32 and the exhaust side bypass air passage 50 by changing the direction. The operation of the first air passage switching damper 51 is controlled by the control unit 35.
  • FIG. 3 shows a state in which the first air passage switching damper 51 is arranged at a closed position that closes the exhaust side bypass air passage 50, and the exhaust air passage through which the exhaust flow passes is switched to the exhaust air passage 32.
  • the air passage from the upstream exhaust air passage 32a to the heat exchanger 2 is opened, so that the exhaust air passage is exhausted.
  • 32 is opened, and the exhaust side bypass air passage 50 and the exhaust side non-heat exchange air passage 101 are closed.
  • the exhaust flow flows from the upstream side exhaust air passage 32a through the heat exchanger 2 to the downstream side exhaust air passage 32b. It is possible to perform heat exchange ventilation operation that exchanges heat between them.
  • FIG. 4 a state in which the first air passage switching damper 51 is arranged at an open position where the exhaust side bypass air passage 50 is opened and the exhaust air passage through which the exhaust flow passes is switched to the exhaust side non-heat exchange air passage 101 is shown. Shows. As shown in FIG. 4, when the first air passage switching damper 51 is arranged in the open position, the air passage from the upstream exhaust air passage 32a to the heat exchanger 2 is blocked, so that the exhaust air passage is exhausted. 32 is closed, and the exhaust side bypass air passage 50 and the exhaust side non-heat exchange air passage 101 are opened.
  • the exhaust flow bypasses the heat exchanger 2 and flows from the upstream exhaust air passage 32a to the downstream exhaust air passage 32b, and the indoor air is exhausted to the outside without passing through the heat exchanger 2.
  • the heat exchange type ventilation device 1 has two operation modes, the heat exchange ventilation operation and the normal ventilation operation described above, and the operation mode is appropriately selected by using the remote controller 36 described later according to the user's preference.
  • FIG. 5 is a block diagram showing a functional configuration related to control of the heat exchange type ventilation device according to the first embodiment.
  • the heat exchange type ventilation device 1 includes a control unit 35 attached to the outside of the casing 5 and a remote controller 36 installed in the room.
  • the control unit 35 and the remote controller 36 can communicate with each other in both directions.
  • the control unit 35 controls the operation of the entire heat exchange type ventilator 1.
  • the control unit 35 controls the operation of the air supply blower 11 and the exhaust blower 12 to control the operation of the heat exchange type ventilator 1.
  • the control unit 35 controls the operation of the heat exchange type ventilator 1 based on the control signal instructing the operation of the heat exchange type ventilator 1 received by the remote controller 36 and transmitted from the remote controller 36. Further, the control unit 35 controls the operation of the heat exchange type ventilation device 1 based on the information instructing the operation preset in the control unit 35.
  • control unit 35 includes a damper control unit 351 that controls the operation of the first air passage switching damper 51.
  • the damper control unit 351 can be said to be a first control unit that controls the operation of the first air passage switching damper 51.
  • the damper control unit 351 has a closed position that closes the exhaust side bypass air passage 50 and the exhaust side non-heat exchange air passage 101, and an open position that opens the exhaust side bypass air passage 50 and the exhaust side non-heat exchange air passage 101.
  • the exhaust air passage through which the exhaust flow passes can be either the exhaust air passage 32 or the exhaust side non-heat exchange air passage 101. Controls to switch to the air passage. That is, the damper control unit 351 has a function as an air passage switching control unit. The damper control unit 351 switches the position of the first air passage switching damper 51 based on the control signal transmitted from the remote controller 36.
  • the damper control unit 351 receives the control signal, and when the control signal includes an instruction signal instructing to stop the operation of both the air supply blower 11 and the exhaust blower 12, the exhaust side bypass wind. Control is performed to open the passage 50 and the exhaust side non-heat exchange air passage 101 to close the exhaust air passage 32. That is, when the received control signal includes an instruction signal instructing to stop the operation of both the air supply blower 11 and the exhaust blower 12, the damper control unit 351 uses the first air passage switching damper 51. Controls the placement in the open position. Then, the damper control unit 351 controls to hold the first air passage switching damper 51 in the open position until the exhaust blower 12 is operated.
  • control signal including the instruction signal for instructing the stop of the operation of both the supply air blower 11 and the exhaust blower 12 include the stop instruction signal for instructing the stop of the operation of the heat exchange type ventilator 1.
  • FIG. 6 is a flowchart showing a control procedure of the control unit when the heat exchange type ventilation device according to the first embodiment is stopped.
  • FIG. 7 is a conceptual diagram showing the position of the first air passage switching damper when the heat exchange type ventilation device according to the first embodiment is stopped.
  • step S10 the control unit 35 receives the control signal transmitted from the remote controller 36.
  • step S20 the control unit 35 receives both the stop signal of the air supply blower 11 instructing the stop of the operation of the air supply blower 11 and the stop signal of the exhaust blower 12 instructing the stop of the operation of the exhaust blower 12. It is determined whether or not it is included in the received control signal. If both the stop signal of the air supply blower 11 and the stop signal of the exhaust blower 12 are included in the received control signal, the control unit 35 instructs the operation stop of the heat exchange type ventilator 1 in step S10. This is the case when a stop instruction signal is received.
  • step S20 If both the stop signal of the supply air blower 11 and the stop signal of the exhaust blower 12 are included in the received control signal, Yes in step S20 and the process proceeds to step S30. If at least one of the stop signal of the supply air blower 11 and the stop signal of the exhaust blower 12 is not included in the received control signal, the result is No in step S20, and the process returns to step S10.
  • step S30 the control unit 35 controls to open the exhaust side bypass air passage 50. Specifically, the control unit 35 stops the air supply blower 11 and the exhaust blower 12. Then, the damper control unit 351 arranges the first air passage switching damper 51 at an open position where the exhaust side bypass air passage 50 and the exhaust side non-heat exchange air passage 101 are opened as shown in FIG. 7, and the exhaust side. Control is performed to open the bypass air passage 50 and the exhaust side non-heat exchange air passage 101. That is, when the operation of the heat exchange type ventilator 1 is stopped, the position of the first air passage switching damper 51 is set to the open position.
  • the damper control unit 351 heat exchanges regardless of whether the operation mode of the heat exchange type ventilation device 1 immediately before stopping the operation of the heat exchange type ventilation device 1 is either the heat exchange ventilation operation or the bypass ventilation operation.
  • the position of the first air passage switching damper 51 is set to the open position. Therefore, when the heat exchange type ventilation device 1 is performing the heat exchange ventilation operation immediately before stopping the operation of the heat exchange type ventilation device 1, the damper control unit 351 positions the position of the first air passage switching damper 51. Switch from the closed position to the open position.
  • the damper control unit 351 sets the position of the first air passage switching damper 51 to the open position. Keep it as it is.
  • the timing at which the damper control unit 351 switches the position of the first air passage switching damper 51 from the closed position to the open position may be the timing when the control unit 35 receives the stop instruction signal, and the control unit 35 receives the stop instruction signal. It may be after a predetermined time has elapsed since then.
  • step S40 the damper control unit 351 maintains the exhaust side bypass air passage 50 in an open state. Specifically, the damper control unit 351 controls to hold the first air passage switching damper 51 in the open position until both the air supply blower 11 and the exhaust blower 12 are operated to operate the heat exchange type ventilator 1. The exhaust side bypass air passage 50 and the exhaust side non-heat exchange air passage 101 are maintained in an open state.
  • step S50 the control unit 35 determines whether or not the control signal transmitted from the remote controller 36 has been received. If it is determined that the control signal transmitted from the remote controller 36 has been received, the result is Yes in step S50, and the process proceeds to step S60. If it is determined that the control signal transmitted from the remote controller 36 has not been received, the result is No in step S50, and the process returns to step S40.
  • step S60 the control unit 35 performs control corresponding to the received control signal and starts the operation of the heat exchange type ventilation device 1.
  • step S40 described above the damper control unit 351 opens the first air passage switching damper 51 until both the air supply blower 11 and the exhaust blower 12 are operated to operate the heat exchange type ventilator 1. It was decided to keep it in, but it is not limited to this.
  • the damper control unit 351 releases the maintenance of the exhaust side bypass air passage 50 in the open state at least when the control unit 35 operates the exhaust blower 12 according to the control signal, and the damper control unit 51 cancels the maintenance of the exhaust side bypass air passage 50 and causes the first air passage switching damper 51.
  • the position may be controlled to a position corresponding to the content of the received control signal. That is, the damper control unit 351 may hold the first air passage switching damper 51 in the open position until the exhaust blower 12 is operated.
  • the heat exchange type ventilator 1 has the exhaust side bypass air passage 50 and the exhaust side non-heat exchange air passage with the position of the first air passage switching damper 51 as an open position when the heat exchange type ventilator 1 is stopped. Release 101.
  • the outside air that has flowed into the inside of the heat exchange type ventilation device 1 through the exhaust outlet 14 when the heat exchange type ventilation device 1 is stopped passes through the exhaust side bypass air passage 50 and does not pass through the heat exchanger 2. Therefore, even when fog is generated or the outside air is in a high humidity state, the outside air flowing into the heat exchange type ventilation device 1 through the exhaust outlet 14 is condensed in the heat exchanger 2.
  • the water contained in the outside air does not aggregate in the heat exchanger 2.
  • the heat exchange type ventilator 1 can reduce unnecessary water retention in the heat exchanger 2 due to the outside air, and can reduce deterioration of the heat exchanger 2 due to unnecessary water retention.
  • the exhaust side bypass air passage 50 and the exhaust side non-heat exchange air passage 101 are air passages through which the airflow does not pass through the heat exchanger 2
  • the exhaust air passage 32 is an air passage through which the airflow passes through the heat exchanger 2. It can reduce the pressure loss. Therefore, even when a negative pressure in the room is constantly generated due to the operation of another ventilation device such as a local ventilation device provided in the room where the heat exchange type ventilation device 1 is a ventilation target space, heat exchange occurs. While the type ventilation device 1 is stopped, outside air easily flows into the room through the exhaust side non-heat exchange air passage 101.
  • the exhaust side bypass air passage 50 can function as a pass duct that supplies outside air to the room and reduces the negative pressure in the room.
  • the heat exchange type ventilator 1 switches the first air passage switching damper 51 so that the exhaust air passage 32 becomes the exhaust side non-heat exchange air passage 101 when stopped, so that the outside air becomes the heat exchanger 2 when stopped. It is possible to secure an air passage that does not pass through. As a result, the heat exchange type ventilator 1 introduces outside air into the room through the exhaust side non-heat exchange air passage 101 due to the negative pressure in the room when stopped, and suppresses deterioration of the heat exchanger 2 due to an unintended inflow of outside air. At the same time, the negative pressure in the room can be reduced.
  • the heat exchange type ventilation device 1 even if the indoor pressure is in a negative pressure environment while stopped, the outside air flows into the room from the air passage that does not pass through the heat exchanger 2.
  • the heat exchanger 2 is less likely to deteriorate, and the negative pressure environment in the room when stopped can be reduced.
  • the exhaust blow is performed when the heat exchange type ventilation device 1 is stopped.
  • the outside air that has flowed into the heat exchange type ventilator 1 through the outlet 14 passes through the heat exchanger 2. Therefore, when fog is generated or when the outside air is in a high humidity state, the outside air flowing into the heat exchange type ventilation device 1 through the exhaust outlet 14 is condensed in the heat exchanger 2.
  • deterioration of the heat exchanger 2 due to the inflow of outside air at the time of stop can be suppressed without the need to add air supply equipment such as a ventilation fan or a pass duct to the room as a measure against negative pressure in the room at the time of stop. ..
  • Embodiment 2 In the first embodiment, the case where the bypass air passage which is the air passage bypassing the heat exchanger 2 is provided on the exhaust air passage 32 side is shown, but the bypass air passage may be provided on the supply air passage 31 side. ..
  • FIG. 8 is a conceptual diagram showing the position of the second air passage switching damper when the heat exchange type ventilation device according to the second embodiment is stopped.
  • the heat exchange type ventilation device 60 according to the second embodiment has an air supply side bypass air passage 61 and a second air passage switching damper 62 instead of the exhaust side bypass air passage 50 and the first air passage switching damper 51. Except for this, it has the same configuration as the heat exchange type ventilation device 1 according to the first embodiment.
  • the heat exchanger 2 is bypassed by being installed in the air passage passing through the heat exchanger 2 in the air supply air passage 31 which is the heat exchange air supply air passage.
  • An air supply side bypass air passage 61 which is a bypass air passage, is formed.
  • the air supply side bypass air passage 61 is an air passage that bypasses the heat exchanger 2 and connects the upstream side air supply air passage 31a and the downstream side air supply air passage 31b, and is an air supply outlet without passing through the heat exchanger 2. It is a bypass air passage for flowing the air supply to 15.
  • the air supply side bypass air passage 61 is a non-heat exchange air passage that does not pass through the heat exchanger 2.
  • the air supply side non-heat exchange air passage 102 which is a non-heat exchange air passage connected by the air supply side, is formed inside the casing 5.
  • the heat exchange type ventilation device 60 causes the air supply air flow, which is the air flow of the outside air sucked from the air supply air suction port 13, to flow through the air supply air passage 31 which is the heat exchange air supply air passage and is passed through the heat exchanger 2. Heat exchange ventilation with heat exchange with the exhaust flow can be performed.
  • the heat exchange type ventilation device 60 causes the supply air flow, which is the air flow of the outside air sucked from the supply air suction port 13, to flow through the air supply side non-heat exchange air passage 102, which is the non-heat exchange air passage, to the heat exchanger 2.
  • normal ventilation which is non-heat exchange ventilation without heat exchange between the supply air flow and the exhaust flow, can be performed.
  • the air passage passing through the heat exchanger 2 in the air supply air passage 31 and the air supply side bypass air passage 61 are switched to the portion where the air supply air passage 31 and the air supply side bypass air passage 61 branch off.
  • An electric second air passage switching damper 62 which is a damper for this purpose, is provided.
  • the second air passage switching damper 62 can be rephrased as a damper for switching between the air supply air passage 31 and the air supply side non-heat exchange air passage 102.
  • the second air passage switching damper 62 has a rotation shaft at the branch point between the air supply air passage 31 and the air supply side bypass air passage 61 and allow the outside air sucked from the supply air suction port 13 to pass through the heat exchanger 2. It constitutes an air passage switching unit that switches between the air supply air passage 31 and the air supply side bypass air passage 61 by switching whether or not.
  • the second air passage switching damper 62 is composed of, for example, a plate that rotates inside the upstream air supply air passage 31a, and can switch between the air supply air passage 31 and the air supply side bypass air passage 61 by changing the direction. ..
  • the operation of the second air passage switching damper 62 is controlled by the damper control unit 351.
  • the second air passage switching damper 62 arranged at the open position is shown by a solid line
  • the second air passage switching damper 62 arranged at the closed position is shown by a broken line.
  • the air supply airflow is The air supply air passage through which it passes is switched to the non-heat exchange air passage 102 on the air supply side.
  • the air passage from the upstream air supply air passage 31a to the heat exchanger 2 is blocked, so that the air supply air passage 31 is blocked, and the air supply side bypass air passage 61 and the air supply side non-heat exchange air passage 102 are opened. Will be done.
  • the air supply air flows from the upstream air supply air passage 31a to the downstream air supply air passage 31b without passing through the heat exchanger 2, so that the heat exchange type ventilator 60 has the air supply airflow and the exhaust flow in the heat exchanger 2.
  • Normal ventilation operation can be performed without heat exchange with.
  • the air supply airflow is The air supply air passage through which it passes is switched to the air supply air passage 31.
  • the air supply air passage 31 is opened, and the air supply side bypass air passage 61 and the air supply side non-heat exchange air passage 102 are blocked. Will be done.
  • the air supply air flows from the upstream air supply air passage 31a through the heat exchanger 2 to the downstream air supply air passage 31b. It is possible to perform heat exchange ventilation operation that exchanges heat between them.
  • the control unit 35 performs a process of controlling the second air passage switching damper 62 instead of the first air passage switching damper 51. That is, when both the stop signal of the air supply blower 11 and the stop signal of the exhaust blower 12 are included in the received control signal, the control unit 35 stops the supply air blower 11 and the exhaust blower 12. .. Then, when the control signal includes an instruction signal instructing to stop the operation of both the air supply blower 11 and the exhaust blower 12, the damper control unit 351 has the air supply side bypass air passage 61 and the air supply side non. Control is performed to open the heat exchange air passage 102.
  • the damper control unit 351 of the second air passage switching damper 62 Control is performed to arrange the position at an open position where the air supply side bypass air passage 61 and the air supply side non-heat exchange air passage 102 are opened. Then, the damper control unit 351 controls to hold the second air passage switching damper 62 in the open position until the exhaust blower 12 is operated.
  • the damper control unit 351 can be said to be a second control unit that controls the operation of the second air passage switching damper 62.
  • the damper control unit 351 releases the maintenance of the air supply side bypass air passage 61 in the open state at least when the control unit 35 operates the air supply blower 11 according to the control signal, and switches the second air passage.
  • the position of the damper 62 may be controlled to a position corresponding to the content of the received control signal. That is, the damper control unit 351 may hold the second air passage switching damper 62 in the open position until the supply air blower 11 is operated.
  • the heat exchange type ventilator 60 sets the position of the second air passage switching damper 62 as an open position when the heat exchange type ventilator 60 is stopped, and the air supply side bypass air passage 61 and the air supply side non-heat exchange.
  • the air passage 102 is opened.
  • the outside air that has flowed into the inside of the heat exchange type ventilation device 60 through the supply air suction port 13 when the heat exchange type ventilation device 60 is stopped passes through the air supply side bypass air passage 61 and the heat exchanger 2. No. Therefore, even when fog is generated or the outside air is in a high humidity state, the outside air flowing into the heat exchange type ventilation device 60 through the supply air suction port 13 is condensed in the heat exchanger 2.
  • the heat exchange type ventilator 60 can reduce unnecessary water retention in the heat exchanger 2 due to the outside air, and can reduce deterioration of the heat exchanger 2 due to unnecessary water retention.
  • the air supply side bypass air passage 61 and the air supply side non-heat exchange air passage 102 are air passages through which the airflow does not pass through the heat exchanger 2, the airflow airflow is an air passage through the heat exchanger 2.
  • the pressure loss can be reduced as compared with the road 31. Therefore, even when a negative pressure in the room is constantly generated due to the operation of another ventilation device such as a local ventilation device provided in the room where the heat exchange type ventilation device 60 is a ventilation target space, heat exchange occurs. While the type ventilation device 60 is stopped, outside air tends to flow into the room through the air supply side non-heat exchange air passage 102.
  • the air supply side bypass air passage 61 can function as a pass duct that supplies outside air to the room and reduces the negative pressure in the room.
  • the same effect as that of the heat exchange type ventilator 1 according to the first embodiment can be obtained.
  • FIG. 9 is a conceptual diagram showing the positions of the first air passage switching damper and the second air passage switching damper when the heat exchange type ventilation device according to the third embodiment is stopped.
  • Bypass air passages which are air passages that bypass the heat exchanger 2 may be provided on the exhaust air passage 32 side and the supply air air passage 31 side.
  • the heat exchange type ventilation device 70 according to the third embodiment shown in FIG. 9 has a configuration in which the heat exchange type ventilation device 1 according to the first embodiment and the heat exchange type ventilation device 60 according to the second embodiment are combined. Have.
  • the outside air flowing into the heat exchange type ventilator 70 when the heat exchange type ventilator 70 is stopped does not pass through the heat exchanger 2. That is, when the heat exchange type ventilation device 70 is stopped, the outside air that has flowed into the heat exchange type ventilation device 70 through the exhaust outlet 14 passes through the exhaust side non-heat exchange air passage 101 and does not pass through the heat exchanger 2. .. Further, when the heat exchange type ventilation device 70 is stopped, the outside air flowing into the heat exchange type ventilation device 70 through the supply air suction port 13 passes through the air supply side non-heat exchange air passage 102 and passes through the heat exchanger 2. It doesn't pass.
  • the heat exchange type ventilation device 70 according to the third embodiment has the same effect as the heat exchange type ventilation device 1 according to the above-described first embodiment, but the heat exchange type ventilation device 1 according to the first embodiment has the same effect. And it is larger than the heat exchange type ventilation device 60 according to the second embodiment.
  • FIG. 10 is a conceptual diagram showing an image of the flow of airflow while the heat exchange type ventilator according to the fourth embodiment is stopped.
  • FIG. 11 is a conceptual diagram showing an image of the flow of airflow during operation of the heat exchange type ventilator according to the fourth embodiment.
  • the heat exchange type ventilation device 80 according to the fourth embodiment is an exhaust air passage 32 on the upstream side of the heat exchanger 2 in addition to the configuration of the heat exchange type ventilation device 1 according to the first embodiment described above.
  • a bypass air passage connecting the upstream exhaust air passage 32a and the downstream exhaust air passage 32b, which is the exhaust air passage 32 downstream of the heat exchanger 2, without passing through the heat exchanger 2 is provided outside the casing 5. It may be provided.
  • the heat exchange type ventilator 80 has an external bypass air passage that is attached to the air passage that passes through the heat exchanger 2 in the exhaust air passage 32 and bypasses the heat exchanger 2 outside the casing 5, and heat exchange in the exhaust air passage 32. It is provided with an air passage switching shutter for switching between an air passage passing through the vessel 2 and an external bypass air passage.
  • the heat exchange type ventilation device 80 has a bypass duct 81 that connects the upstream exhaust air passage 32a and the downstream exhaust air passage 32b in communication with each other.
  • the bypass duct 81 is an external bypass air passage.
  • the bypass duct 81 is provided so as to be connected to the top plate 3.
  • the downstream exhaust air passage 32b is provided with a shutter 82 capable of closing the downstream exhaust air passage 32b below the exhaust outlet 14 in the vertical direction.
  • the shutter 82 is an air passage switching shutter.
  • the shutter 82 is flipped upward in the vertical direction by the dynamic pressure of the exhaust flow generated by the exhaust blower 12 during the operation of the heat exchange type ventilator 80, and is blown up from the heat exchanger 2 to the exhaust outlet.
  • the exhaust air passage 32 toward 14 is opened.
  • the shutter 82 closes the downstream exhaust air passage 32b below the exhaust outlet 14 as shown in FIG. 10 while the heat exchange type ventilation device 80 in which the dynamic pressure of the exhaust flow is stopped is stopped, and exhausts the air.
  • the air passage from the air outlet 14 to the heat exchanger 2 is closed to close the exhaust air passage 32.
  • the shutter 82 is configured so that the downstream exhaust air passage 32b can be blocked below the exhaust outlet 14 by its own weight or the urging force of the spring.
  • the upstream exhaust air passage 32a on the upstream side of the heat exchanger 2 and the downstream exhaust air passage 32b on the downstream side of the heat exchanger 2 are connected by the bypass duct 81 without passing through the heat exchanger 2.
  • An external non-heat exchange air passage 103 which is a non-heat exchange air passage, is formed inside the casing 5. Then, the outside air flowing into the downstream exhaust air passage 32b through the exhaust outlet 14 when the heat exchange type ventilation device 80 is stopped flows to the upstream exhaust air passage 32a through the bypass duct 81, and flows from the exhaust suction port 16. Since it flows into the room, it does not pass through the heat exchanger 2.
  • the heat exchange type ventilator 80 according to the fourth embodiment the same effect as that of the heat exchange type ventilator 1 according to the first embodiment described above can be obtained.
  • FIG. 12 is a first diagram showing an example of the hardware configuration of the control unit included in the heat exchange ventilation device according to the first embodiment.
  • FIG. 12 shows a hardware configuration when the function of the control unit 35 is realized by using dedicated hardware.
  • the control unit 35 includes a processing circuit 41 that executes various processes, and an interface 42 that is a connection interface with an external device of the control unit 35.
  • the processing circuit 41 which is dedicated hardware, is a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or any of these. It is a combination.
  • Each function of the control unit 35 is realized by using the processing circuit 41.
  • the interface 42 outputs a control signal to the air supply blower 11, the exhaust blower 12, the first air passage switching damper 51, and the second air passage switching damper 62.
  • FIG. 13 is a second diagram showing an example of the hardware configuration of the control unit included in the heat exchange ventilation device according to the first embodiment.
  • FIG. 13 shows a hardware configuration when the function of the control unit 35 is realized by using the hardware for executing the program.
  • the control unit 35 has a processor 43, a memory 44, and an interface 42.
  • the processor 43 is a CPU (Central Processing Unit).
  • the processor 43 may be a processing device, an arithmetic unit, a microprocessor, a microcomputer, or a DSP (Digital Signal Processor).
  • Each function of the control unit 35 is realized by the processor 43 and software, firmware, or a combination of software and firmware.
  • the software or firmware is described as a program and stored in the memory 44, which is a built-in memory.
  • the memory 44 is a non-volatile or volatile semiconductor memory, and is a RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable Read Only Memory) or EEPROM (registered trademark) (Electrically Erasable). Programmable Read Only Memory).
  • the configuration shown in the above embodiments is an example, and can be combined with another known technique, can be combined with each other, and does not deviate from the gist. It is also possible to omit or change a part of the configuration.

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

Abstract

Ce ventilateur du type à échange de chaleur comprend : un trajet d'air de dérivation qui est disposé le long d'un trajet d'air, d'un trajet d'air d'échappement (32) et/ou d'un trajet d'air d'alimentation (31), qui passe par un échangeur de chaleur (2) et qui contourne l'échangeur de chaleur (2); un registre de commutation de trajet d'air qui commute le trajet entre le trajet d'air qui passe par l'échangeur de chaleur (2) et le trajet d'air de dérivation; et une unité de commande qui commande le fonctionnement d'une soufflante d'air d'échappement, le fonctionnement d'une soufflante d'air d'alimentation et le fonctionnement du registre de commutation de trajet d'air. Dans un état dans lequel le fonctionnement de la soufflante d'air d'alimentation et de la soufflante d'air d'échappement est arrêté, l'unité de commande met le registre de commutation de trajet d'air dans une position d'ouverture dans laquelle le trajet d'air de dérivation est ouvert.
PCT/JP2020/021453 2020-05-29 2020-05-29 Ventilateur du type à échange de chaleur WO2021240814A1 (fr)

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JP2022527466A JP7309066B2 (ja) 2020-05-29 2020-05-29 熱交換型換気装置

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WO2023142512A1 (fr) * 2022-01-27 2023-08-03 青岛海信日立空调系统有限公司 Climatiseur

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JPH0415439A (ja) * 1990-05-07 1992-01-20 Daikin Ind Ltd 熱交換換気装置
JP2017058042A (ja) * 2015-09-15 2017-03-23 パナソニックＩｐマネジメント株式会社 熱交換型換気装置

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JPH0415439A (ja) * 1990-05-07 1992-01-20 Daikin Ind Ltd 熱交換換気装置
JP2017058042A (ja) * 2015-09-15 2017-03-23 パナソニックＩｐマネジメント株式会社 熱交換型換気装置

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WO2023142512A1 (fr) * 2022-01-27 2023-08-03 青岛海信日立空调系统有限公司 Climatiseur

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