WO2022181522A1 - 換気システム - Google Patents
換気システム Download PDFInfo
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- WO2022181522A1 WO2022181522A1 PCT/JP2022/006868 JP2022006868W WO2022181522A1 WO 2022181522 A1 WO2022181522 A1 WO 2022181522A1 JP 2022006868 W JP2022006868 W JP 2022006868W WO 2022181522 A1 WO2022181522 A1 WO 2022181522A1
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- Prior art keywords
- mode
- air
- temperature
- air supply
- controller
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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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- F24F7/007—Ventilation with forced flow
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Definitions
- the present disclosure relates to ventilation systems.
- Patent Document 1 Conventionally, there is known a ventilation system using a ventilation device that includes an air supply fan, an exhaust fan, a heat exchanger, and a controller (see Patent Document 1, for example).
- the ventilation system ventilates the target space. It is known that when the ventilation system is used under conditions where the humidity outside the target space is high and the humidity inside the target space is low, condensation may occur in the air supply passage in the ventilation device. ing. For this reason, in the ventilation system described in Patent Document 1, an air supply state detector is provided in the air supply passage for detecting the state of the outside air taken into the target space from outside the target space, and the controller detects the air supply state detector. Based on the results, the air supply fan is stopped or operated intermittently when the outside air is not good.
- the purpose of the present disclosure is to suppress water leakage from ventilation equipment.
- the ventilation system of the present disclosure is A ventilation device that ventilates a target space, a first detection unit that detects a first temperature that is an air temperature outside the target space, a second detection unit that detects a second temperature that is an air temperature inside the target space, and a controller that controls the operation of the ventilation device,
- the ventilator includes a heat exchanger, an air supply passage and an exhaust passage that communicate the inside and the outside of the target space via the heat exchanger, and air outside the target space through the air supply passage.
- the controller operates a first mode in which the air supply fan and the exhaust fan are operated, and the air supply in a state where the air supply fan is stopped, operated intermittently, or an average air supply air volume is reduced below that in the first mode.
- a second mode of operating the fan, or a third mode of operating the exhaust fan with the exhaust fan stopped, operated intermittently, or with an average exhaust air volume lower than that in the first mode can be executed.
- the controller switches from the first mode to the second mode or the third mode.
- the first mode When the first mode is executed with high humidity outside the target space and inside the target space, humid air flows from both inside and outside the target space to the heat exchanger, and the moisture content of the heat exchanger is allowed. The capacity is exceeded and the possibility of water leakage from the ventilation system increases.
- the temperature inside and outside the target space is determined based on the temperatures inside and outside the target space. It can be assumed that the humidity is high.
- the controller switches from the first mode to the second mode or the third mode when the first temperature is equal to or higher than the first predetermined value during execution of the first mode. According to this configuration, when the humidity of the air outside the target space is not high, unnecessary switching of the ventilation device from the first mode to the second mode or the third mode can be suppressed.
- the controller to switch from the first mode to the second mode.
- the controller when the first temperature is lowered and the difference between the first temperature and the second temperature is equal to or less than the second predetermined value, it can be inferred that the humidity outside the target space is high. .
- the operation mode of the ventilation device by switching the operation mode of the ventilation device to the second mode, it is possible to suppress the flow of highly humid air outside the target space into the heat exchanger.
- the controller during execution of the first mode, when the difference between the second temperature and the first temperature becomes equal to or greater than the second predetermined value due to an increase in the second temperature, the controller , to switch from the first mode to the third mode.
- the controller when the second temperature rises and the difference between the first temperature and the second temperature is equal to or less than the second predetermined value, it can be estimated that the humidity in the target space is high. can.
- the operation mode of the ventilator to the third mode, it is possible to suppress the high-humidity air in the target space from flowing into the heat exchanger.
- the ventilation system of the present disclosure is A ventilation device that ventilates a target space, a first detection unit that detects a first temperature that is an air temperature outside the target space, a second detection unit that detects a second temperature that is an air temperature inside the target space, and a controller that controls the operation of the ventilation device,
- the ventilator includes a heat exchanger, an air supply passage and an exhaust passage that communicate the inside and the outside of the target space via the heat exchanger, and air outside the target space through the air supply passage.
- the controller operates a first mode in which the air supply fan and the exhaust fan are operated, and the air supply fan is stopped, operated intermittently, or the air supply is performed in a state where the average air supply air volume is lower than that in the first mode.
- a second mode in which the air fan and the exhaust fan are operated, and the exhaust fan is stopped, operated intermittently, or the air supply fan and the exhaust fan are operated while the average exhaust air volume is lower than in the first mode.
- a third mode of operation When the difference between the second temperature and the first temperature is equal to or less than the second predetermined value during execution of the first mode, The controller switches from the first mode to the second mode and the third mode.
- the first mode is switched to the second mode and the third mode to supply air.
- the controller switches from the first mode to the second mode and the third mode. According to this configuration, when the humidity of the air outside the target space is not high, unnecessary switching of the ventilation device from the first mode to the second mode and the third mode can be suppressed.
- the controller controls the second mode or from the third mode to the first mode.
- the difference between the first temperature and the second temperature exceeds the third predetermined value, it can be estimated that the humidity inside and outside the target space is no longer high.
- the ventilation volume in the target space can be quickly returned to the normal volume.
- the controller switches from the second mode or the third mode to the first mode when the execution of the second mode or the third mode continues for a predetermined time or longer.
- the operating mode of the ventilator can be switched to the first mode when the states of the second mode and the third mode continue for a predetermined time or longer. As a result, it is possible to prevent the state in which the ventilation rate in the target space is decreasing from continuing for a predetermined period of time or longer.
- FIG. 1 is a schematic block diagram of a ventilation system of the present disclosure
- FIG. It is a schematic cross-sectional explanatory drawing which looked at the ventilator from the top.
- FIG. 3 is a schematic cross-sectional explanatory view taken along line AA of FIG. 2;
- FIG. 3 is a schematic cross-sectional explanatory view taken along line BB of FIG. 2;
- It is a perspective view of a heat exchanger.
- FIG. 5 is an explanatory diagram showing operating states of the air supply fan in the first mode and the second mode (when stopped in the second mode);
- FIG. 4 is an explanatory diagram showing operating states of the air supply fan in the first mode and the second mode (in the case of intermittent operation in the second mode);
- FIG. 5 is an explanatory diagram showing operating states of the air supply fan in the first mode and the second mode (when stopped in the second mode);
- FIG. 4 is an explanatory diagram showing operating states of the air supply fan in the first mode and the second mode (in the case
- FIG. 5 is an explanatory diagram showing operating states of the air supply fan in the first mode and the second mode (in the case of weak operation in the second mode);
- FIG. 4 is an explanatory diagram showing operating states of the exhaust fan in the first mode and the third mode (when stopped in the third mode);
- FIG. 10 is an explanatory diagram showing operating states of the exhaust fan in the first mode and the third mode (in the case of intermittent operation in the third mode);
- FIG. 5 is an explanatory diagram showing operating states of the exhaust fan in the first mode and the third mode (in the case of weak operation in the third mode);
- FIG. 4 is an explanatory diagram showing a procedure for switching operation modes in the ventilation system of the present disclosure;
- FIG. 10 is an explanatory diagram showing another example of the operation mode switching procedure in the ventilation system of the present disclosure;
- FIG. 1 is a schematic configuration diagram of a ventilation system according to the present disclosure.
- the ventilation system 10 shown in FIG. 1 is an embodiment of the ventilation system of the present disclosure and includes a ventilation device 11 , a controller 36 , a first temperature sensor 38 and a second temperature sensor 39 .
- the ventilation device 11 ventilates the indoor space S1.
- the indoor space S1 is an example of a target space to be ventilated by the ventilation system 10, and is a space inside the room R.
- the space outside the room R is called an outdoor space S2.
- the outdoor space S2 is outdoors.
- the outdoor space S2 may be any space that is outside the indoor space S1 and allows direct air flow to and from the outdoors, and may be, for example, a space inside a building.
- the ventilator 11 is installed in the space S3 behind the ceiling of the room R, and is connected to the indoor space S1 and the outdoor space S2 via ducts 45a to 45d.
- FIG. 2 is a schematic cross-sectional explanatory view of the ventilator viewed from above.
- FIG. 3 is a schematic cross-sectional explanatory view taken along line AA of FIG.
- FIG. 4 is a schematic cross-sectional explanatory view taken along line BB of FIG.
- the ventilator 11 has a casing 31 having a substantially rectangular parallelepiped box shape.
- a heat exchanger 32 , an exhaust fan 33 , and an air supply fan 34 are housed inside the casing 31 .
- the casing 31 is provided with a return air intake 41 , an exhaust air outlet 42 , an outside air intake 43 , and a supply air outlet 44 .
- a controller 36 is provided outside the casing 31 .
- the controller 36 is housed within a control box 37 provided outside the casing 31 .
- the controller 36 (hereinafter also referred to as “ventilation controller”) is a device that controls the operation of the ventilation device 11 , and controls the operation of the fan provided in the ventilation device 11 .
- the ventilation controller 36 is configured by, for example, a microcomputer having a processor such as a CPU, and memories such as RAM and ROM.
- the ventilation controller 36 may be realized as hardware using LSI, ASIC, FPGA, or the like.
- the ventilation controller 36 performs a predetermined function when the processor executes a program installed in memory. Note that the ventilation controller 36 may be provided integrally with the ventilation device 11 as a part of the ventilation device 11, or may be provided separately as a separate device from the ventilation device 11. FIG.
- the ventilator 11 further comprises a remote controller 25.
- the remote controller 25 is used to operate the ventilation device 11 to start/stop operation, and to set the indoor humidity, the intensity of air blowing, and the like.
- the remote controller 25 is communicably connected to the ventilation controller 36 by wire or wirelessly. A user can remotely operate the ventilator 11 by using the remote controller 25 .
- the return air intake 41 is used to take air (return air) RA from the indoor space S1 into the casing 31.
- the exhaust outlet 42 is used to discharge the return air RA taken into the casing 31 to the outdoor space S2 as the exhaust EA.
- the outside air intake port 43 is used to take in the air (outside air) OA from the outdoor space S2 into the casing 31 .
- the supply air outlet 44 is used to supply the outside air OA taken into the casing 31 to the indoor space S1 as supply air SA.
- the return air intake 41 is connected to the indoor space S1 via a duct 45c.
- the exhaust air outlet 42 is connected to the outdoor space S2 via a duct 45b.
- an air passage that connects the indoor space S1 and the outdoor space S2 via the casing 31 with these ducts 45b and 45c is also referred to as an exhaust passage (exhaust passage 46 described later).
- the outside air intake 43 is connected to the outdoor space S2 via a duct 45a.
- the supply air outlet 44 is connected to the indoor space S1 via a duct 45d.
- an air passage that connects the indoor space S1 and the outdoor space S2 via the casing 31 by these ducts 45a and 45d is also referred to as an air supply passage (an air supply passage 47 described later).
- the return air RA taken in from the return air intake port 41 passes through the heat exchanger 32 and is discharged from the exhaust outlet 42 to the outdoor space S2 as the exhaust EA.
- this air flow is also referred to as "first air flow F1”.
- Outside air OA taken in from the outside air intake port 43 passes through the heat exchanger 32 and is supplied as supply air SA from the supply air outlet 44 to the indoor space S1.
- this air flow is also referred to as "second air flow F2".
- FIG. 5 is a perspective view of a heat exchanger.
- the heat exchanger 32 in this embodiment is an orthogonal total heat exchanger configured such that the first air flow F1 and the second air flow F2 are substantially perpendicular to each other.
- the heat exchanger 32 has a partition plate 32a and a partition plate 32b.
- the partition plates 32a and the partition plates 32b are alternately laminated with an appropriate adhesive.
- the heat exchanger 32 is generally formed in a substantially quadrangular prism shape.
- the partition plate 32a has heat conductivity and moisture permeability and is formed in a flat plate shape.
- the partition plate 32b is formed in a corrugated plate shape in which substantially triangular cross sections are continuously formed.
- the partition plate 32b forms an air passage between two adjacent partition plates 32a.
- the partition plates 32b are stacked with an angle changed by 90 degrees for each plate in the direction in which the partition plates 32a and the partition plates 32b are stacked (vertical direction in FIG. 5).
- an exhaust side passage 32c for passing the first air flow F1 and an air supply side passage 32d for passing the second air flow F2 are orthogonal to each other. formed by The air flowing through the exhaust side passage 32c and the air flowing through the air supply side passage 32d exchange sensible heat and latent heat (total heat exchange) via the partition plate 32a having heat conductivity and moisture permeability. ing.
- the inside of the casing 31 is divided by the heat exchanger 32 into two areas, an indoor space S1 side and an outdoor space S2 side.
- an upstream exhaust passage 46 a is formed in the casing 31 upstream of the heat exchanger 32 for the first air flow F 1
- the first A downstream exhaust passage 46b is formed downstream of the air flow F1.
- the upstream exhaust passage 46a and the downstream exhaust passage 46b constitute an exhaust passage 46 that communicates the indoor space S1 (see FIG. 1) and the outdoor space S2 (see FIG. 1) via the heat exchanger 32. .
- an upstream air supply passage 47a is formed upstream of the heat exchanger 32 for the second air flow F2 in the casing 31, and the second air supply passage 47a is formed upstream of the heat exchanger 32.
- a downstream air supply passage 47b is formed downstream of the air flow F2.
- the upstream air supply passage 47 a and the downstream air supply passage 47 b constitute an air supply passage 47 that communicates the indoor space S ⁇ b>1 and the outdoor space S ⁇ b>2 via the heat exchanger 32 .
- a partition wall 51 is provided between the upstream side exhaust passage 46a and the downstream side air supply passage 47b.
- a partition wall 52 is provided between the downstream side exhaust passage 46b and the upstream side air supply passage 47a.
- an exhaust fan 33 is arranged near the exhaust outlet 42 in the downstream exhaust passage 46b.
- the first airflow F1 is generated, and the return air RA from the indoor space S1 passes through the exhaust passage 46 and is discharged to the outdoor space S2 as the exhaust EA.
- an air supply fan 34 is arranged in the vicinity of the air supply outlet 44 in the downstream air supply passage 47b.
- a second airflow F2 is generated by operating the air supply fan 34, and the outside air OA of the outdoor space S2 passes through the air supply passage 47 and is supplied to the indoor space S1 as supply air SA.
- a first temperature sensor 38 is arranged near the outside air intake 43 in the upstream air supply passage 47a.
- the first temperature sensor 38 detects the temperature of the outside air OA passing through the upstream air supply passage 47a.
- the first temperature sensor 38 detects the temperature of the air in the outdoor space S2.
- the first temperature sensor 38 is provided in the upstream air supply passage 47a inside the casing 31, but the installation position of the first temperature sensor 38 is not limited to this.
- the first temperature sensor 38 can be installed at a position where the temperature of the air in the outdoor space S2 can be detected, for example, it may be installed inside the outdoor space S2 or the duct 45a.
- the detection signal is input to the ventilation controller 36.
- the ventilation controller 36 controls the operation of the exhaust fan 33 and the air supply fan 34 based on the detected temperature value of the first temperature sensor 38 (hereinafter referred to as the first detected value K1).
- a second temperature sensor 39 is arranged near the return air intake 41 in the upstream exhaust passage 46a.
- This second temperature sensor 39 detects the temperature of the return air RA passing through the upstream side exhaust passage 46a.
- the second temperature sensor 39 detects the temperature of the air in the indoor space S1.
- the second temperature sensor 39 is provided in the upstream exhaust passage 46a inside the casing 31, but the installation position of the second temperature sensor 39 is not limited to this.
- the second temperature sensor 39 can be installed at a position where the temperature of the air in the indoor space S1 can be detected, for example, it may be installed inside the indoor space S1 or the duct 45c.
- the detection signal is input to the ventilation controller 36.
- the ventilation controller 36 controls the operation of the exhaust fan 33 and the air supply fan 34 based on the detected temperature value of the second temperature sensor 39 (hereinafter referred to as the second detected value K2).
- the ventilation system 10 has "first mode”, “second mode”, and “third mode” as operation modes of the ventilation device 11 .
- a “first mode” is a normal operating mode.
- the “second mode” is an operation mode suitable when the humidity of the outdoor space S2 is high.
- the “third mode” is an operation mode suitable when the humidity in the indoor space S1 is high.
- the ventilation device 11 is normally operated in the first mode.
- the operation mode is switched from the first mode to the second mode.
- the operation mode is switched from the first mode to the third mode.
- the ventilation controller 36 controls the operation of the exhaust fan 33 and the supply air fan 34 to switch between the first mode, the second mode, and the third mode.
- 6A to 6C schematically show operating states of the air supply fan 34 in the first mode and the second mode.
- 7A to 7C schematically show operating states of the exhaust fan 33 in the first mode and the third mode.
- the ventilator 11 is operated in the first mode from time t1 to time t2, switched from the first mode to the second mode at time t2, and operated in the first mode from time t2 to time t3. It shows the case of driving in two modes.
- 7A to 7C the ventilator 11 is operated in the first mode from time t1 to time t2, switched from the first mode to the third mode at time t2, and operated in the third mode from time t2 to time t3. It shows the case of driving in 3 modes.
- the supply air fan 34 is operated with a normal supply air volume.
- the normal supply air volume at this time is called an average supply air volume QS1.
- the exhaust fan 33 is operated with a normal exhaust air volume.
- the normal exhaust air volume at this time is called an average exhaust air volume QE1.
- the terms "normal exhaust air volume” and "normal air supply air volume” mean at least one of the following. 1. Exhaust air volume and air supply air volume that can ensure a normal ventilation volume (ventilation frequency) desired by the user in the indoor space S1. 2. Exhaust air volume and air supply air volume that can ensure the designed ventilation volume (ventilation frequency) set for the indoor space S1. 3. The exhaust air volume and the air supply air volume obtained by operating the exhaust fan 33 and the air supply fan 34 at the target rotation speed set for the first mode.
- ventilation controller 36 modifies the operation of supply air fan 34 .
- the air supply fan 34 is operated in one of the modes shown in FIGS. 6A to 6C.
- the air supply fan 34 is stopped while the ventilation device 11 is operating in the second mode.
- the air volume (average supply air volume QS2) of the supply air SA (outside air OA) supplied from the outdoor space S2 to the indoor space S1 becomes "0".
- the air supply fan 34 operates intermittently while the ventilation device 11 is operating in the second mode. In other words, the air supply fan 34 alternately repeats a state of operating at the same average air supply air volume QS1 as in the first mode and a state of being stopped. In this case, the air volume (average air supply air volume QS2) of the supply air SA (outside air OA) supplied from the outdoor space S2 to the indoor space S1 is smaller than the average air supply air volume QS1 in the first mode.
- the air volume (average air supply air volume QS2) of the supply air SA (outside air OA) supplied from the outdoor space S2 to the indoor space S1 is smaller than the average air supply air volume QS1 in the first mode.
- the air supply fan 34 is continuously operated at an air volume smaller than the average air supply air volume QS1 in the first mode.
- the air volume (average air supply air volume QS2) of the supply air SA (outside air OA) supplied from the outdoor space S2 to the indoor space S1 is smaller than the average air supply air volume QS1 in the first mode.
- the mode in which the fans 33 and 34 are continuously operated with a smaller amount of air than in the first mode is also referred to as "weak operation".
- the air supply fan 34 is weakly operated.
- the ventilation controller 36 controls the operation of the air supply fan 34 so that the average air supply air volume QS2 is smaller than the average air supply air volume QS1 in the first mode. ing. Note that the exhaust air volume of the exhaust fan 33 in each second mode may be the same as the exhaust air volume in the first mode unless the operation mode is changed to another operation mode.
- the outside air OA with a smaller air volume than in the first mode passes through the air supply passage 47 (see FIG. 4) and passes through the heat exchanger. 32 and supplied to the indoor space S1.
- the amount of outside air OA flowing into the heat exchanger 32 can be reduced compared to the first mode. Thereby, the moisture content of the heat exchanger 32 can be suppressed.
- ventilation controller 36 modifies the operation of exhaust fan 33 .
- the exhaust fan 33 is operated in one of the modes shown in FIGS. 7A to 7C.
- the exhaust fan 33 is stopped while the ventilation device 11 is operating in the third mode.
- the air volume (average exhaust air volume QE2) of the exhaust EA (return air RA) discharged from the indoor space S1 to the outdoor space S2 becomes "0".
- the exhaust fan 33 operates intermittently while the ventilation device 11 is operating in the third mode.
- the exhaust fan 33 alternately repeats a state of operating at the same average exhaust air volume QE1 as in the first mode and a state of being stopped.
- the air volume (average exhaust air volume QE2) of the exhaust EA (return air RA) discharged from the indoor space S1 to the outdoor space S2 is smaller than the average exhaust air volume QE1 in the first mode.
- the exhaust fan 33 is weakly operated while the ventilation device 11 is operating in the third mode.
- the air volume (average exhaust air volume QE2) of the return air RA (exhaust EA) discharged from the indoor space S1 to the outdoor space S2 is smaller than the average exhaust air volume QE1 in the first mode.
- the ventilation controller 36 controls the operation of the exhaust fan 33 so that the average exhaust air volume QE2 is smaller than the average exhaust air volume QE1 in the first mode.
- the amount of air supplied by the air supply fan 34 in each third mode may be the same as the amount of air supplied in the first mode unless the operation mode is changed to another operation mode.
- the return air RA with a smaller air volume than in the first mode passes through the exhaust passage 46 (see FIG. 3) and the heat exchanger 32 and is exhausted to the outdoor space S2.
- the amount of return air RA flowing into the heat exchanger 32 can be reduced compared to the first mode. Thereby, the moisture content of the heat exchanger 32 can be suppressed.
- the indoor space S1 and the outdoor space S2 are highly humid. It is estimated whether or not In the ventilation system 10, when the difference between the temperature of the indoor space S1 and the temperature of the outdoor space S2 is equal to or less than a predetermined value, it is estimated that the humidity in either the indoor space S1 or the outdoor space S2 has increased.
- the ventilation system 10 Focusing on the fact that water leakage from the ventilation device 11 is likely to occur in summer, and that the temperature difference between the indoor space S1 and the outdoor space S2 is small during the period (intermediate period) when cooling is not performed, the ventilation system 10 has an operation mode The temperature of the outdoor space S2 is added to the switching condition of . As a result, in the ventilation system 10, under conditions corresponding to the intermediate period, unnecessary switching of the ventilation device 11 from the first mode to the second mode and the third mode is suppressed.
- the ventilation system 10 operates by switching between a first mode, a second mode, and a third mode according to the flowchart shown in FIG.
- the ventilation system 10 when the user turns on the ventilation device 11 using the remote controller 25 , the ventilation device 11 operates in the first mode and the ventilation controller 36 starts controlling the ventilation device 11 .
- step (ST101) the ventilation controller 36 determines whether or not the first detection value K1 (the temperature of the outdoor space S2) of the first temperature sensor 38 is equal to or higher than the first predetermined value T1.
- the first predetermined value T1 is set to 17 (°C).
- the value of the first predetermined value T1 is stored in the ventilation controller 36, and the remote controller 25 can be used to change the value as appropriate.
- step (ST101) if the first detected value K1 of the first temperature sensor 38 is less than the first predetermined value T1 (NO), the ventilation controller 36 repeats step (ST101). In addition, in the ventilation system 10, step (ST101) may be omitted.
- step (ST101) if the first detected value K1 of the first temperature sensor 38 is equal to or greater than the first predetermined value T1 (YES), the ventilation controller 36 executes step (ST102).
- step (ST102) the ventilation controller 36 calculates the absolute value (
- the second predetermined value T2 is set to 2.0 (°C).
- the value of the second predetermined value T2 is stored in the ventilation controller 36, and the remote controller 25 can be used to change the value as appropriate.
- the value of the second predetermined value T2 for example, a value between 0.5 and 2.5.degree.
- step (ST102) if the calculated value (
- step (ST102) if the calculated value (
- step (ST103) the ventilation controller 36 confirms the change in the first detection value K1 when the condition (
- step (ST103) if the first detection value K1 decreases to satisfy the condition (
- step (ST103) if the first detection value K1 does not decrease and the condition (
- step (ST105) the ventilation controller 36 confirms the change in the second detection value K2 when the condition (
- step (ST105) if the second detection value K2 rises to satisfy the condition (
- step (ST105) if the second detection value K2 does not increase and the condition (
- step (ST106) the ventilation controller 36 determines whether the first detected value K1 is greater than the second detected value K2 (K1>K2, in other words, whether the temperature of the outdoor space S2 is higher than the temperature of the indoor space S1). or). In step (ST106), if it is confirmed that the condition (K1>K2) is satisfied (if YES), the ventilation controller 36 determines that the humidity in the indoor space S1 is high, and executes step (ST107). , the operation mode of the ventilator 11 is switched from the first mode to the third mode.
- step (ST106) When it is confirmed in step (ST106) that the condition (K1>K2) is not satisfied (in the case of NO), the ventilation controller 36 returns the process to step (ST101). Even if the temperature of the outside air OA is lower than the temperature of the return air RA, if the temperature of the return air RA rises sharply and exceeds the temperature of the outside air OA, there is a high possibility that the return air RA is not humid. The step (ST106) is provided to exclude such cases.
- the ventilation controller 36 determines whether or not the operating time in each of these modes has exceeded a predetermined time X.
- the ventilation mode is in operation according to the second mode or the third mode.
- the predetermined time X is set to 5 (minutes).
- the value of the predetermined time X is stored in the ventilation controller 36 and can be changed as appropriate using the remote controller 25 .
- this step (ST108) may be omitted.
- step (ST108) when the operation time in each mode has passed the predetermined time X (if YES), the ventilation controller 36 executes step (ST110), and changes the operation mode of the ventilator 11 from each mode. While switching to the first mode, the process returns to step (ST101).
- step (ST108) if the operating time in each mode has not passed the predetermined time X (NO), the ventilation controller 36 executes step (ST109).
- the ventilation controller 36 determines whether or not the calculated value (
- the third predetermined value T3 is a value greater than the second predetermined value T2.
- ventilation controller 36 executes step (ST110), The operation mode is switched from each mode to the first mode, and the process is returned to step (ST101).
- step (ST109) when the calculated value (
- the ventilation controller 36 repeatedly executes the above steps (ST101) to (ST110) until the user turns the ventilation device 11 "OFF" using the remote controller 25.
- the ventilation system 10 of the present embodiment can use the first temperature sensor 38 and the second temperature sensor 39 to estimate that the humidity in the outdoor space S2 is high. In other words, the ventilation system 10 can estimate that the humidity in the outdoor space S2 is high without using a humidity sensor.
- the operation mode of the ventilation device 11 can be switched from the first mode to the second mode. Therefore, the inflow of air with high humidity into the heat exchanger 32 is suppressed, the moisture content of the heat exchanger 32 is suppressed, and water leakage from the ventilator 11 can be suppressed.
- the ventilation system 10 of this embodiment can use the first temperature sensor 38 and the second temperature sensor 39 to estimate that the humidity in the indoor space S1 is high. In other words, the ventilation system 10 can estimate that the humidity in the indoor space S1 is high without using a humidity sensor.
- the operation mode of the ventilation device 11 can be switched from the first mode to the third mode. Therefore, the inflow of air with high humidity into the heat exchanger 32 is suppressed, the moisture content of the heat exchanger 32 is suppressed, and water leakage from the ventilator 11 can be suppressed.
- the ventilation system 10 of this embodiment does not require a humidity sensor, the ventilation system 10 capable of suppressing water leakage from the ventilation device 11 can be constructed at a lower cost.
- the control program of an existing ventilation system having only a temperature sensor in the same way as the ventilation system 10 of the present embodiment, it is possible to suppress water leakage from the existing ventilation system.
- the ventilation system 10 can be operated according to the flow diagram shown in FIG.
- the flowchart shown in FIG. 9 differs from the flowchart shown in FIG. 8 in that a step (ST111) is added instead of steps (ST103) to (ST107). In the following description, only parts related to steps different from the flowchart shown in FIG. 8 will be described.
- step (ST102) if the calculated value (
- step (ST102) if the calculated value (
- the operations of the exhaust fan 33 and the air supply fan 34 can be changed at the same time, and the second mode and the third mode can be executed at the same time.
- any one of stop, intermittent operation, or weak operation can be selected as the operating mode of the air supply fan 34, and the operating mode of the exhaust fan 33 can be stopped, intermittent operation, or weak operation can be selected.
- the ventilation system 10 when the second mode and the third mode are executed simultaneously, the amount of both the return air RA and the outside air OA flowing into the heat exchanger 32 can be reduced compared to the first mode. Thereby, the moisture content of the heat exchanger 32 can be further suppressed, and the moisture content of the heat exchanger 32 can be reliably suppressed.
- the ventilation system 10 when the operations of both the exhaust fan 33 and the air supply fan 34 are changed, the moisture content in the heat exchanger 32 is suppressed and the room pressure in the indoor space S1 becomes positive or negative. can be suppressed.
- the ventilation system 10 described above includes a ventilation device 11 that ventilates the indoor space S1, a first temperature sensor 38 that detects a first temperature (first detection value K1) that is the temperature of the outdoor space S2, and a A second temperature sensor 39 that detects a second temperature (second detected value K2), which is the air temperature, and a ventilation controller 36 that controls the operation of the ventilation device 11 are provided.
- the ventilator 11 includes a heat exchanger 32, an air supply passage 47 and an exhaust passage 46 that connect the indoor space S1 and the outdoor space S2 via the heat exchanger 32, and an air supply passage 47 for supplying air in the outdoor space S2. and an exhaust fan 33 for exhausting the air in the indoor space S1 to the outdoor space S2 through the exhaust passage 46.
- the ventilation controller 36 switches from the first mode to the second or third mode.
- the first detection value K1 is equal to or greater than the first predetermined value T1
- the difference between the second detection value K2 and the first detection value K1 is equal to or less than the second predetermined value T2.
- the ventilation controller 36 switches from the first mode to the second mode or the third mode. According to this configuration, it is possible to prevent unnecessary switching of the ventilation device 11 from the first mode to the second mode or the third mode when the humidity of the air in the outdoor space S2 is not high.
- the ventilation controller 36 switches from the first mode to the second mode when the difference from K1 is less than or equal to the second predetermined value T2.
- the temperature (first detected value K1) of the outdoor space S2 is lowered and the difference between the first detected value K1 and the second detected value K2 is equal to or less than the second predetermined value T2.
- the humidity of the outdoor space S2 is high.
- by switching the operation mode of the ventilator 11 to the second mode it is possible to suppress the high humidity air in the outdoor space S2 from flowing into the heat exchanger 32 .
- the ventilation controller 36 switches from the first mode to the third mode.
- the temperature of the indoor space S1 (the second detected value K2) rises, and the difference between the first detected value K1 and the second detected value K2 becomes equal to or less than the second predetermined value T2.
- the humidity in the indoor space S1 is high.
- by switching the operation mode of the ventilator 11 to the third mode it is possible to suppress the high humidity air in the indoor space S1 from flowing into the heat exchanger 32 .
- the ventilation device 11 that ventilates the indoor space S1, the first temperature sensor 38 that detects the first temperature (first detection value K1) that is the temperature of the outdoor space S2, and the indoor space S1
- a second temperature sensor 39 that detects a second temperature (second detected value K2), which is the air temperature
- the ventilator 11 includes a heat exchanger 32, an air supply passage 47 and an exhaust passage 46 that connect the indoor space S1 and the outdoor space S2 via the heat exchanger 32, and an air supply passage 47 for supplying air in the outdoor space S2. and an exhaust fan 33 for exhausting the air in the indoor space S1 to the outdoor space S2 through the exhaust passage 46.
- the first detection value K1 is equal to or greater than the first predetermined value T1
- the difference between the second detection value K2 and the first detection value K1 is equal to or less than the second predetermined value T2.
- the ventilation controller 36 switches from the first mode to the second and third modes.
- the first detection value K1 is equal to or greater than the first predetermined value T1
- the difference between the second detection value K2 and the first detection value K1 is the second detection value.
- the ventilation controller 36 switches from the first mode to the second mode and the third mode. According to this configuration, it is possible to prevent unnecessary switching of the ventilation device 11 from the first mode to the second mode and the third mode when the humidity of the air in the outdoor space S2 is not high.
- the difference between the second detection value K2 and the first detection value K1 is set to the third predetermined value T3, which is larger than the second predetermined value T2. If exceeded, the ventilation controller 36 switches from the second or third mode to the first mode. According to such a configuration, when the difference between the first detected value K1 and the second detected value K2 exceeds the third predetermined value T3, it can be assumed that the humidity in the indoor space S1 and the outdoor space S2 is no longer high. can be done. In this case, by switching the operation mode of the ventilation device 11 to the first mode, the ventilation amount of the indoor space S1 can be quickly returned to the normal amount.
- the ventilation controller 36 switches from the second mode or the third mode to the first mode.
- the operation mode of the ventilator 11 can be switched to the first mode when the states of the second mode and the third mode continue for the predetermined time X or longer.
- Ventilation system 11 Ventilator 32: Heat exchanger 33: Exhaust fan 34: Air supply fan 36: Ventilation controller (controller) 38: first temperature sensor (first detection unit) 39: Second temperature sensor (second detection unit) 46: Exhaust passage 47: Air supply passage S1: Indoor space (target space) S2: outdoor space (outside the target space) K1: First detected value (first temperature) K2: Second detected value (second temperature) T1: first predetermined value T2: second predetermined value T3: third predetermined value X: predetermined time
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Abstract
Description
対象空間の換気を行う換気装置と、前記対象空間外の気温である第1温度を検出する第1検出部と、前記対象空間内の気温である第2温度を検出する第2検出部と、前記換気装置の運転を制御するコントローラと、を備え、
前記換気装置が、熱交換器と、前記対象空間の内部と外部とを前記熱交換器を経由して連通させる給気通路及び排気通路と、前記対象空間外の空気を前記給気通路を介して前記対象空間内に給気する給気ファンと、前記対象空間内の空気を前記排気通路を介して前記対象空間外に排気する排気ファンと、を備え、
前記コントローラが、前記給気ファン及び前記排気ファンを運転させる第1モード、及び前記給気ファンを停止、間欠運転、若しくは平均給気風量を前記第1モードよりも低下させた状態で前記給気ファンを運転させる第2モード、又は、前記排気ファンを停止、間欠運転、若しくは平均排気風量を前記第1モードよりも低下させた状態で前記排気ファンを運転させる第3モード、を実行可能であり、
前記第1モードの実行中、前記第2温度と前記第1温度との差が第2所定値以下である場合に、
前記コントローラが、前記第1モードから前記第2モード又は前記第3モードに切り替える。
この構成によれば、対象空間外の空気の湿度が高くなっていない場合に、換気装置が第1モードから第2モード又は第3モードに不必要に切り替えられるのを抑制することができる。
この構成によれば、第1温度が低下して第1温度と第2温度との差が第2所定値以下となっていた場合には、対象空間外の湿度が高いと推測することができる。この場合に、換気装置の運転モードを第2モードに切り替えることで、対象空間外の湿度の高い空気が、熱交換器に流れ込むのを抑制することができる。
この構成によれば、第2温度が上昇して、第1温度と第2温度との差が第2所定値以下となっていた場合には、対象空間内の湿度が高いと推測することができる。この場合に、換気装置の運転モードを第3モードに切り替えることで、対象空間内の湿度の高い空気が、熱交換器に流れ込むのを抑制することができる。
対象空間の換気を行う換気装置と、前記対象空間外の気温である第1温度を検出する第1検出部と、前記対象空間内の気温である第2温度を検出する第2検出部と、前記換気装置の運転を制御するコントローラと、を備え、
前記換気装置が、熱交換器と、前記対象空間の内部と外部とを前記熱交換器を経由して連通させる給気通路及び排気通路と、前記対象空間外の空気を前記給気通路を介して前記対象空間内に給気する給気ファンと、前記対象空間内の空気を前記排気通路を介して前記対象空間外に排気する排気ファンと、を備え、
前記コントローラが、前記給気ファン及び前記排気ファンを運転させる第1モード、及び、前記給気ファンを停止、間欠運転、若しくは平均給気風量を前記第1モードよりも低下させた状態で前記給気ファンを及び前記排気ファンを運転させる第2モード、及び、前記排気ファンを停止、間欠運転、若しくは平均排気風量を前記第1モードよりも低下させた状態で前記給気ファン及び前記排気ファンを運転させる第3モード、を実行可能であり、
前記第1モードの実行中、前記第2温度と前記第1温度との差が前記第2所定値以下である場合において、
前記コントローラが、前記第1モードから前記第2モード及び前記第3モードに切り替える。
この構成によれば、第1モードの実行中、第2温度と第1温度との差が第2所定値以下である場合に、第1モードから第2モード及び第3モードに切り替えて給気ファン及び排気ファンを運転させることで、対象空間内及び対象空間外の湿度の高い空気が双方から熱交換器に流入するのを抑制し、換気装置からの水漏れを抑制することができる。
この構成によれば、対象空間外の空気の湿度が高くなっていない場合に、換気装置が第1モードから第2モード及び第3モードに不必要に切り替えられるのを抑制することができる。
この構成によれば、第1温度と第2温度との差が第3所定値を超えた場合に、対象空間内及び対象空間外の湿度が高くなくなったと推測することができる。この場合に、換気装置の運転モードを第1モードに切り替えることで、対象空間内の換気量を通常の量へ速やかに戻すことができる。
この構成によれば、第2モード及び第3モードの状態が所定時間以上継続した場合に、換気装置の運転モードを第1モードに切り替えることができる。これにより、対象空間内の換気量が低下している状態が所定時間以上継続されるのを防止することができる。
[第1実施形態]
図1は、本開示に係る換気システムの概略的な構成図である。図1に示す換気システム10は、本開示の換気システムの実施形態であり、換気装置11と、コントローラ36と、第1温度センサ38と、第2温度センサ39とを備えている。
換気装置11は、室内空間S1の換気を行う。室内空間S1は、換気システム10により換気を行う対象空間の一例であり、部屋Rの内部の空間である。部屋Rの外部の空間を室外空間S2という。本実施形態では、室外空間S2を屋外としている。室外空間S2は、室内空間S1の外部であって屋外との間で直接空気の行き来が可能な空間であればよく、例えば建屋内の空間であってもよい。換気装置11は、部屋Rの天井裏のスペースS3に設置されており、ダクト45a~45dを介して室内空間S1及び室外空間S2と接続されている。
コントローラ36(以下、「換気コントローラ」ともいう)は、換気装置11の動作を制御する装置であり、換気装置11に備えられたファンの動作を制御する。換気コントローラ36は、例えば、CPU等のプロセッサ、RAM、ROM等のメモリを備えたマイクロコンピュータにより構成される。換気コントローラ36は、LSI、ASIC、FPGA等を用いてハードウェアとして実現されるものであってもよい。換気コントローラ36は、メモリにインストールされたプログラムをプロセッサが実行することによって、所定の機能を発揮する。なお、換気コントローラ36は、換気装置11の一部として当該換気装置11と一体で設けてもよいし、換気装置11とは別の装置として別体で設けてもよい。
図1に示すように、換気装置11は、さらにリモートコントローラ25を備えている。リモートコントローラ25は、換気装置11の運転開始/運転停止の操作や、室内の湿度、送風の強弱等の動作設定を行うために用いられる。リモートコントローラ25は、換気コントローラ36に有線又は無線で通信可能に接続されている。ユーザは、リモートコントローラ25を使用することによって、遠隔で換気装置11を操作することができる。
図1~図4に示すように、還気取入口41は、室内空間S1からの空気(還気)RAをケーシング31内に取り入れるために用いられる。排気吹出口42は、ケーシング31内に取り入れられた還気RAを、排気EAとして室外空間S2に排出するために用いられる。外気取入口43は、室外空間S2からの空気(外気)OAをケーシング31内に取り入れるために用いられる。給気吹出口44は、ケーシング31内に取り入れられた外気OAを、給気SAとして室内空間S1に供給するために用いられる。
図5は、熱交換器の斜視図である。本実施形態における熱交換器32は、第1の空気流F1と、第2の空気流F2とがほぼ直交するように構成された直交型の全熱交換器である。この熱交換器32は、仕切板32aと、隔壁板32bとを有している。仕切板32aと隔壁板32bとは適宜の接着剤により交互に積層されている。熱交換器32は、全体としてほぼ四角柱形状に形成されている。
図2及び図4に示すように、上流側給気通路47aにおいて、外気取入口43の近傍には第1温度センサ38が配置されている。この第1温度センサ38は、上流側給気通路47aを通る外気OAの温度を検出する。言い換えると、第1温度センサ38は、室外空間S2の空気の温度を検出する。なお、本実施形態では、第1温度センサ38を、ケーシング31内の上流側給気通路47aに設けているが、第1温度センサ38の設置位置はこれに限定されない。第1温度センサ38は、室外空間S2の空気の温度を検出可能な位置に設置することができ、例えば、室外空間S2やダクト45aの内部に設置してもよい。
図2及び図3に示すように、上流側排気通路46aにおいて、還気取入口41の近傍には第2温度センサ39が配置されている。この第2温度センサ39は、上流側排気通路46aを通る還気RAの温度を検出する。言い換えると、第2温度センサ39は、室内空間S1の空気の温度を検出する。なお、本実施形態では、第2温度センサ39を、ケーシング31内の上流側排気通路46aに設けているが、第2温度センサ39の設置位置はこれに限定されない。第2温度センサ39は、室内空間S1の空気の温度を検出可能な位置に設置することができ、例えば、室内空間S1やダクト45cの内部に設置してもよい。
換気システム10は、換気装置11の運転モードとして「第1モード」と「第2モード」と「第3モード」とを備えている。「第1モード」は、通常時の運転モードである。「第2モード」は、室外空間S2の湿度が高い場合に適した運転モードである。「第3モード」は、室内空間S1の湿度が高い場合に適した運転モードである。
図6A~図6Cには、第1モード及び第2モードにおける給気ファン34の運転状態を模式的に示している。図7A~図7Cには、第1モード及び第3モードにおける排気ファン33の運転状態を模式的に示している。図6A~図6Cでは、換気装置11を、時刻t1から時刻t2の間は第1モードで運転し、時刻t2に第1モードから第2モードに切り替えて、時刻t2から時刻t3の間は第2モードで運転した場合を示している。図7A~図7Cでは、換気装置11を、時刻t1から時刻t2の間は第1モードで運転し、時刻t2に第1モードから第3モードに切り替えて、時刻t2から時刻t3の間は第3モードで運転した場合を示している。
1.室内空間S1においてユーザが所望する通常の換気量(換気回数)を確保することができる排気風量及び給気風量。
2.室内空間S1に対して設定された設計上の換気量(換気回数)を確保することができる排気風量及び給気風量。
3.第1モードについて設定された目標回転数で排気ファン33及び給気ファン34を運転して得られる排気風量及び給気風量。
図6A~図6Cに示すように、第2モードでは、換気コントローラ36によって、給気ファン34の動作を変更する。言い換えると、第2モードにおいて給気ファン34の動作を変更する場合、図6A~図6Cに示す何れかの態様で給気ファン34を運転する。
図7A~図7Cに示すように、第3モードでは、換気コントローラ36によって、排気ファン33の動作を変更する。言い換えると、第3モードにおいて排気ファン33の動作を変更する場合、図7A~図7Cに示す何れかの態様で排気ファン33を運転する。
室外空間S2が高湿になる場合には、例えば、夜間等に室外空間S2の気温が下がって空気の相対湿度が上昇したような場合が該当する。室内空間S1が高湿になる場合には、例えば、室内空間S1の空調が停止され室内空間S1の空気が除湿されなくなった場合、室外空間S2から室内空間S1に外気OAが流入した場合、及び夜間等に外気温が下がることに伴って室内空間S1の温度が下がり室内空間S1の空気の相対湿度が上昇した場合、等が該当する。これらの場合は、何れも室内空間S1の温度と室外空間S2の温度が近づく場合であると想定される。
換気システム10は、図8に示すフロー図に従って、第1モードと第2モードと第3モードとを切り替えて運転する。換気システム10では、リモートコントローラ25によって、ユーザが換気装置11を「ON」にすると、換気装置11が第1モードで運転すると共に、換気コントローラ36による換気装置11の制御が開始する。
換気システム10は、図9に示すフロー図に従って運転することができる。図9に示すフロー図は、図8に示すフロー図に比べて、ステップ(ST103)~(ST107)に代えて、ステップ(ST111)を加えている点が異なっている。以下の説明では、図8に示すフロー図と異なるステップに関連する部分のみを説明する。
上述した換気システム10は、室内空間S1の換気を行う換気装置11と、室外空間S2の気温である第1温度(第1検出値K1)を検出する第1温度センサ38と、室内空間S1の気温である第2温度(第2検出値K2)を検出する第2温度センサ39と、換気装置11の運転を制御する換気コントローラ36と、を備えている。換気装置11が、熱交換器32と、室内空間S1と室外空間S2とを熱交換器32を経由して連通させる給気通路47及び排気通路46と、室外空間S2の空気を給気通路47を介して室内空間S1に給気する給気ファン34と、室内空間S1の空気を排気通路46を介して室外空間S2に排気する排気ファン33と、を備えている。換気コントローラ36が、給気ファン34及び排気ファン33を運転させる第1モード、及び給気ファン34を停止、間欠運転、若しくは平均給気風量を第1モードよりも低下させた状態で給気ファン34を運転させる第2モード、又は、排気ファン33を停止、間欠運転、若しくは平均排気風量を第1モードよりも低下させた状態で排気ファン33を運転させる第3モード、を実行可能である。第1モードの実行中、第1検出値K1が第1所定値T1以上であって、かつ、第2検出値K2と第1検出値K1との差が第2所定値T2以下である場合に、換気コントローラ36が、第1モードから第2モード又は第3モードに切り替える。
この構成によれば、室外空間S2の空気の湿度が高くなっていない場合に、換気装置11が第1モードから第2モード又は第3モードに不必要に切り替えられるのを抑制することができる。
このような構成によれば、室外空間S2の温度(第1検出値K1)が低下して第1検出値K1と第2検出値K2との差が第2所定値T2以下となっていた場合には、室外空間S2の湿度が高いと推測することができる。この場合に、換気装置11の運転モードを第2モードに切り替えることで、室外空間S2の湿度の高い空気が、熱交換器32に流れ込むのを抑制することができる。
このような構成によれば、室内空間S1の温度(第2検出値K2)が上昇して、第1検出値K1と第2検出値K2との差が第2所定値T2以下となっていた場合には、室内空間S1の湿度が高いと推測することができる。この場合に、換気装置11の運転モードを第3モードに切り替えることで、室内空間S1の湿度の高い空気が、熱交換器32に流れ込むのを抑制することができる。
このような構成によれば、第1モードの実行中、第1検出値K1が第1所定値T1以上であって、かつ、第2検出値K2と第1検出値K1との差が第2所定値T2以下である場合に、第1モードから第2モード及び第3モードに切り替えて給気ファン34及び排気ファン33を運転させることで、室内空間S1及び室外空間S2の湿度の高い空気が双方から熱交換器32に流入するのを抑制し、換気装置11からの水漏れを抑制することができる。
この構成によれば、室外空間S2の空気の湿度が高くなっていない場合に、換気装置11が第1モードから第2モード及び第3モードに不必要に切り替えられるのを抑制することができる。
このような構成によれば、第1検出値K1と第2検出値K2との差が第3所定値T3を超えた場合に、室内空間S1及び室外空間S2の湿度が高くなくなったと推測することができる。この場合に、換気装置11の運転モードを第1モードに切り替えることで、室内空間S1の換気量を通常の量へ速やかに戻すことができる。
このような構成によれば、第2モード及び第3モードの状態が所定時間X以上継続した場合に、換気装置11の運転モードを第1モードに切り替えることができる。これにより、室内空間S1の換気量が低下している状態が所定時間X以上継続されるのを防止することができる。
11 :換気装置
32 :熱交換器
33 :排気ファン
34 :給気ファン
36 :換気コントローラ(コントローラ)
38 :第1温度センサ(第1検出部)
39 :第2温度センサ(第2検出部)
46 :排気通路
47 :給気通路
S1 :室内空間(対象空間)
S2 :室外空間(対象空間の外部)
K1 :第1検出値(第1温度)
K2 :第2検出値(第2温度)
T1 :第1所定値
T2 :第2所定値
T3 :第3所定値
X :所定時間
Claims (8)
- 対象空間(S1)の換気を行う換気装置(11)と、前記対象空間外(S2)の気温である第1温度(K1)を検出する第1検出部(38)と、前記対象空間内(S1)の気温である第2温度(K2)を検出する第2検出部(39)と、前記換気装置(11)の運転を制御するコントローラ(36)と、を備え、
前記換気装置(11)が、熱交換器(32)と、前記対象空間の内部(S1)と外部(S2)とを前記熱交換器(32)を経由して連通させる給気通路(47)及び排気通路(46)と、前記対象空間外(S2)の空気を前記給気通路(47)を介して前記対象空間内(S1)に給気する給気ファン(34)と、前記対象空間内(S1)の空気を前記排気通路(46)を介して前記対象空間外(S2)に排気する排気ファン(33)と、を備え、
前記コントローラ(36)が、前記給気ファン(34)及び前記排気ファン(33)を運転させる第1モード、及び前記給気ファン(34)を停止、間欠運転、若しくは平均給気風量(QS2)を前記第1モードよりも低下させた状態で前記給気ファン(34)を運転させる第2モード、又は、前記排気ファン(33)を停止、間欠運転、若しくは平均排気風量(QE2)を前記第1モードよりも低下させた状態で前記排気ファン(33)を運転させる第3モード、を実行可能であり、
前記第1モードの実行中、前記第2温度(K2)と前記第1温度(K1)との差が第2所定値(T2)以下である場合に、
前記コントローラ(36)が、前記第1モードから前記第2モード又は前記第3モードに切り替える、換気システム(10)。 - 前記第1モードの実行中、前記第1温度(K1)が前記第1所定値(T1)以上である場合、
前記コントローラ(36)が、前記第1モードから前記第2モード又は前記第3モードに切り替える、請求項1に記載の換気システム(10)。 - 前記第1モードの実行中、前記第1温度(K1)が低下することによって前記第2温度(K2)と前記第1温度(K1)との差が前記第2所定値(T2)以下となった場合、
前記コントローラ(36)が、前記第1モードから前記第2モードに切り替える、請求項1又は請求項2に記載の換気システム(10)。 - 前記第1モードの実行中、前記第2温度(K2)が上昇することによって前記第2温度(K2)と前記第1温度(K1)との差が前記第2所定値(T2)以上となった場合、
前記コントローラ(36)が、前記第1モードから前記第3モードに切り替える、請求項1から請求項3の何れか一項に記載の換気システム(10)。 - 対象空間(S1)の換気を行う換気装置(11)と、前記対象空間外(S2)の気温である第1温度(K1)を検出する第1検出部(38)と、前記対象空間内(S1)の気温である第2温度(K2)を検出する第2検出部(39)と、前記換気装置(11)の運転を制御するコントローラ(36)と、を備え、
前記換気装置(11)が、熱交換器(32)と、前記対象空間の内部(S1)と外部(S2)とを前記熱交換器(32)を経由して連通させる給気通路(47)及び排気通路(46)と、前記対象空間外(S2)の空気を前記給気通路(47)を介して前記対象空間内(S1)に給気する給気ファン(34)と、前記対象空間内(S1)の空気を前記排気通路(46)を介して前記対象空間外(S2)に排気する排気ファン(33)と、を備え、
前記コントローラ(36)が、前記給気ファン(34)及び前記排気ファン(33)を運転させる第1モード、及び、前記給気ファン(34)を停止、間欠運転、若しくは平均給気風量(QS2)を前記第1モードよりも低下させた状態で前記給気ファン(34)を及び前記排気ファン(33)を運転させる第2モード、及び、前記排気ファン(33)を停止、間欠運転、若しくは平均排気風量(QE2)を前記第1モードよりも低下させた状態で前記給気ファン(34)及び前記排気ファン(33)を運転させる第3モード、を実行可能であり、
前記第1モードの実行中、前記第2温度(K2)と前記第1温度(K1)との差が前記第2所定値(T2)以下である場合において、
前記コントローラ(36)が、前記第1モードから前記第2モード及び前記第3モードに切り替える、換気システム(10)。 - 前記第1モードの実行中、前記第1温度(K1)が前記第1所定値(T1)以上である場合、
前記コントローラ(36)が、前記第1モードから前記第2モード及び前記第3モードに切り替える、請求項5に記載の換気システム(10)。 - 前記第2モード又は前記第3モードの実行中、前記差が、前記第2所定値(T2)より大きい値である第3所定値(T3)を超えた場合、
前記コントローラ(36)が、前記第2モード又は前記第3モードから前記第1モードに切り替える、請求項1から請求項6のいずれか1項に記載の換気システム(10)。 - 所定時間(X)以上前記第2モード又は前記第3モードの実行が継続された場合、
前記コントローラ(36)が、前記第2モード又は前記第3モードから前記第1モードに切り替える、請求項1から請求項7のいずれか1項に記載の換気システム(10)。
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| JPS6226434A (ja) * | 1985-07-25 | 1987-02-04 | Mitsubishi Electric Corp | 換気扇の自動運転装置 |
| JP2007510885A (ja) * | 2003-11-06 | 2007-04-26 | バエク、チャン−イン | 熱・湿気交換手段を備えた空気調和装置、並びに複数の空気調和装置を用いた室内温度及び湿度調節システムの制御方法 |
| JP2007298252A (ja) * | 2006-05-02 | 2007-11-15 | Hideharu Aizawa | 住宅用換気装置 |
| JP2018159476A (ja) * | 2017-03-22 | 2018-10-11 | パナソニックIpマネジメント株式会社 | 熱交換形換気装置 |
| JP2020008251A (ja) * | 2018-07-11 | 2020-01-16 | ダイキン工業株式会社 | 換気装置 |
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| KR101298816B1 (ko) * | 2008-06-18 | 2013-08-23 | 다이킨 고교 가부시키가이샤 | 환기장치 |
| EP2581675B1 (en) * | 2010-06-11 | 2019-08-21 | Mitsubishi Electric Corporation | Ventilation and air-conditioning apparatus and method for controlling same |
| JP5850487B2 (ja) * | 2011-08-29 | 2016-02-03 | 株式会社長府製作所 | デシカント換気扇 |
| JP2013185714A (ja) * | 2012-03-06 | 2013-09-19 | Panasonic Corp | 熱交換型換気機器 |
| JP6274869B2 (ja) * | 2014-01-16 | 2018-02-07 | 三菱電機株式会社 | 換気装置 |
| JP5858061B2 (ja) * | 2014-01-31 | 2016-02-10 | ダイキン工業株式会社 | 換気装置 |
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| JPS6226434A (ja) * | 1985-07-25 | 1987-02-04 | Mitsubishi Electric Corp | 換気扇の自動運転装置 |
| JP2007510885A (ja) * | 2003-11-06 | 2007-04-26 | バエク、チャン−イン | 熱・湿気交換手段を備えた空気調和装置、並びに複数の空気調和装置を用いた室内温度及び湿度調節システムの制御方法 |
| JP2007298252A (ja) * | 2006-05-02 | 2007-11-15 | Hideharu Aizawa | 住宅用換気装置 |
| JP2018159476A (ja) * | 2017-03-22 | 2018-10-11 | パナソニックIpマネジメント株式会社 | 熱交換形換気装置 |
| JP2020008251A (ja) * | 2018-07-11 | 2020-01-16 | ダイキン工業株式会社 | 換気装置 |
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| TW202242323A (zh) | 2022-11-01 |
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