WO2016056141A1 - 熱交換換気装置 - Google Patents
熱交換換気装置 Download PDFInfo
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- WO2016056141A1 WO2016056141A1 PCT/JP2014/077261 JP2014077261W WO2016056141A1 WO 2016056141 A1 WO2016056141 A1 WO 2016056141A1 JP 2014077261 W JP2014077261 W JP 2014077261W WO 2016056141 A1 WO2016056141 A1 WO 2016056141A1
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- blower
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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
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
-
- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- 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
- F24F11/76—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 means responsive to temperature, e.g. bimetal springs
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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
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
- F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/34—Heater, e.g. gas burner, electric air heater
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/029—Control issues
- F25B2313/0294—Control issues related to the outdoor fan, e.g. controlling speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/11—Fan speed control
- F25B2600/111—Fan speed control of condenser fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or 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]
- Y02B30/56—Heat recovery units
-
- 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 invention relates to a heat exchange ventilator provided with a heater for heating the outside air taken into the heat exchanger from the outside.
- the product has a built-in heater and can be controlled by temperature, or a PTC (positive temperature coefficient) heater, heating and ventilation by the heater can be continued.
- a method of controlling the heater only by turning on / off the power supply to the heater is generally used in order to simplify the control and reduce the cost and size.
- Patent Document 1 discloses a ventilator equipped with an external heater.
- Patent Document 2 discloses a ventilator with a built-in heater.
- the heater is turned on when the temperature of the outside air becomes ⁇ 7 ° C. or lower so that the temperature after passing through the heater becomes 0 ° C.
- the air flow is variable in four stages, and the operation is performed at 75%, 50%, 25% of the rated air flow, in other words, the operation at the air flow of 750 m 3 / h, 500 m 3 / h, 250 m 3 / h.
- the air volume is 750 meters 3 / h at 2.3 ° C., air volume 500 meters 3 / h at 7 ° C., air volume 250 meters 3 / H is 21 ° C.
- the ventilator is a heat exchange ventilator that exchanges heat between the supply airflow and the exhaust stream via the heat exchanger, the temperature of the outside air taken into the heat exchanger from the outside rises to 21 ° C. It makes no sense for heat recovery.
- the heater is turned off when the temperature of the air after passing through the heater becomes equal to or higher than the heater off threshold temperature.
- the heater off threshold temperature is set around 10 to 15 ° C.
- the heater is frequently turned on and off repeatedly.
- chattering increases. When chattering occurs, the life of the switch for switching the heater on and off is affected, and unnecessary heating is performed.
- the present invention has been made in view of the above, and the temperature of the outside air taken into the heat exchanger from the outside is excessive when it is operated with an air volume smaller than the reference air volume when selecting or designing the heater. It is an object of the present invention to provide a heat exchange ventilator that can prevent the heater from rising to a high level and suppress frequent heater on / off.
- the present invention provides an air supply air passage that guides outdoor outdoor air to the room, an exhaust air air passage that guides air from the room to the outside, and an air supply air passage from the outside.
- An air supply blower that generates a supply airflow toward the room, an exhaust air blower that generates an exhaust flow from the room to the outdoors in the exhaust airflow path, and a supply airflow and an exhaust flow provided in the middle of the supply airflow path and the exhaust airflow path.
- the heat exchange ventilator according to the present invention When the heat exchange ventilator according to the present invention is operated with an air volume smaller than a standard air volume when selecting or designing a heater, the temperature of the outside air taken into the heat exchanger from the outside excessively increases. This prevents the heater from being frequently turned on and off.
- FIG. 1 The figure which shows the structure of the heat exchange ventilation apparatus concerning Embodiment 1 of this invention.
- FIG. 1 The flowchart which shows the flow of operation
- storage part is a setting which uses an external connection heater.
- FIG. 1 is a diagram illustrating a configuration of a heat exchange ventilator according to a first embodiment of the present invention.
- the heat exchange ventilator 21 is provided in the supply air path 3 for guiding outdoor outdoor air to the room indoors, the exhaust air path 2 for guiding indoor air to the outdoors, and the supply air path 3 toward the room from the outside.
- An air supply blower 5 that generates a supply airflow
- an exhaust air blower 4 that is provided in the exhaust air passage 2 and generates an exhaust air flow that flows from the room to the outside, and is provided in the middle of the air supply air passage 3 and the exhaust air passage 2.
- a heat exchanger 1 that performs heat exchange between a supply airflow passing through the path 3 and an exhaust flow passing through the exhaust airflow path 2 and a control device 12 that controls the operation of the supply air blower 5 and the exhaust air blower 4 are provided.
- a control device 12 Connected to the control device 12 is a remote controller 18 for operating the heat exchange ventilator 21 and performing various settings.
- the air supply blower 5 can be operated at any one of a plurality of intensities with different airflows of the generated airflow.
- the heat exchanging ventilator 21 Connected to the heat exchanging ventilator 21 are an outdoor air supply duct 7 for taking outside air into the heat exchanging ventilator 21 and an outdoor exhaust duct 10 for exhausting indoor air from the heat exchanging ventilator 21 to the outdoors.
- the An external connection heater 8 is disposed in the outdoor air supply duct 7 that takes in outside air into the heat exchange ventilator 21.
- the external connection heater 8 is a heater that is installed in an outdoor air supply duct 7 that is connected to the outdoor side of the air supply air passage 3 and heats the air supply air flowing into the heat exchanger 1 through the air supply air passage 3. is there.
- the heat exchange ventilator 21 includes a temperature sensor 6 that measures the temperature of the outside air taken into the supply air passage 3 through the outdoor air supply duct 7.
- the heat exchange ventilator 21 performs control so as to supply electric power to the external connection heater 8 when the temperature of the outside air measured by the temperature sensor 6 is equal to or lower than the heater-on threshold temperature.
- FIG. 2 is a diagram illustrating a configuration of a control device of the heat exchange ventilator according to the first embodiment.
- the control device 12 opens and closes the heater connection terminal 13 for connecting the external connection heater 8 and the heater opening that is opened when the temperature of the outside air falls below a preset heater-on threshold temperature and opens when the release condition is satisfied.
- a device 16 16.
- the heat exchange ventilator 21 can change various settings with the first switch 14a, the second switch 14b, the third switch 14c, or the remote controller 18 for setting change provided on the control device 12.
- the heat exchange ventilator 21 may have a configuration in which the remote controller 18 is omitted. Is possible.
- the control device 12 stores the setting contents by the control unit 22 that controls the operation of the air supply blower 5 and the exhaust blower 4 and the on / off of the external connection heater 8 and the first switch 14 a.
- 1 setting storage part 23 2nd setting storage part 24 which memorizes setting contents by the 2nd switch 14b, and 3rd setting storage part 25 which memorizes setting contents by the 3rd switch 14c.
- the first switch 14a is a switch for setting whether or not the external connection heater 8 is connected.
- the second switch 14 b is a switch for setting a heater-on threshold temperature at which the heater switch 16 is closed and power supply to the external connection heater 8 is started.
- the third switch 14c is a switch for setting whether to control the externally connected heater 8 in the air volume priority mode, the heater priority mode, or the hybrid mode.
- the air volume priority mode is a mode for prohibiting the external connection heater 8 from being turned on when the air supply blower 5 is operated at a strength smaller than a preset strength.
- the preset strength is a strength that generates a supply airflow with an airflow one step above the minimum airflow. That is, in the air volume priority mode, the external connection heater 8 is turned off when the air supply blower 5 is operated at a strength lower than a preset strength, and the air supply blower 5 is operated at a strength higher than the preset strength. In this mode, the external connection heater 8 is turned on.
- the supply air blower 5 is turned on before the external connection heater 8 is turned on.
- the external connection heater 8 is turned on without changing the strength of operation of the air supply blower 5.
- the same control as in the heater priority mode is performed, and the measured lower limit temperature of the temperature sensor 6 is set in advance. If it exceeds, it is a mode for performing the same control as the air volume priority mode. That is, in the hybrid mode, it is prohibited to turn on the external connection heater 8 during operation with the minimum air volume, and the temperature of the outside air taken into the heat exchanger 1 from the outside is lower than the operable lower limit temperature of the heat exchange ventilator 21. If this happens, the operation with the minimum air volume is prohibited and the external connection heater 8 is turned on.
- the operable lower limit temperature of the heat exchange ventilator 21 is a temperature set based on the presence / absence of a drain recovery function and the condensation resistance.
- the setting content stored in the first setting storage unit 23 is a setting for using the externally connected heater 8
- the heater switch 16 connected to the connection heater 8 is closed, and a voltage is applied to the external connection heater 8 by the heater power supply 17.
- the temperature is lower than the heater-on threshold temperature stored in the second setting storage unit 24 and after the time when the external connection heater 8 is turned on. Prohibits operation with minimum airflow.
- the heater-on threshold temperature is lowered during the operation with the minimum air flow, the heater switch 16 is closed and the air flow of the supply air flow generated in the supply air blower 5 is increased by one step.
- the setting content stored in the third setting storage unit 25 is the air volume priority mode
- the minimum While operating with the air volume the external connection heater 8 is not turned on.
- This control is effective when the heat exchange ventilator 21 is configured so that the air volume can be changed in conjunction with an external device such as a CO 2 sensor.
- the reason why the operation of the external connection heater 8 is prohibited during the operation with the minimum air volume is that there is a high possibility that energy is wasted if the external connection heater 8 is turned on while the operation is performed with the minimum air volume. .
- storage part 25 is a hybrid mode
- the external connection heater 8 is turned off during the operation, and if the measurement result of the temperature sensor 6 is below the lower limit temperature at which the heat exchange ventilator 21 can be operated, the operation with the minimum air volume is prohibited and the external connection heater 8 is turned on.
- the heat exchange ventilator 21 can be operated to perform ventilation even when the outside air is in a low temperature state.
- FIG. 3 is a flowchart showing a flow of operation of the heat exchange ventilator according to the embodiment when the setting content stored in the first setting storage unit is a setting for using an externally connected heater.
- the control unit 22 measures the temperature of the outside air taken into the heat exchanger 1 through the supply air passage 3 by the temperature sensor 6.
- the control unit 22 determines whether the temperature of the outside air is lower than the heater-on threshold temperature stored in the second setting storage unit 24. If the temperature of the outside air is lower than the heater-on threshold temperature stored in the second setting storage unit 24 (step S2: Yes), the control unit 22 is stored in the third setting storage unit 25 in step S3. Check the settings. If the temperature of the outside air is not lower than the heater-on threshold temperature stored in the second setting storage unit 24 (step S2: No), the process ends.
- step S4 the control part 22 will be operating the supply air blower 5 by the minimum air volume.
- step S4: Yes the control unit 22 increases the air volume of the air supply generated by the air supply fan 5 by one level.
- step S4: No the process proceeds to step S6.
- step S6 the control unit 22 closes the heater switch 16 and turns on the external connection heater 8.
- step S6 when the external connection heater 8 is already turned on, the state is maintained. After step S6, the control unit 22 ends the process.
- step S7 the control unit 22 is operating the air supply fan 5 with the minimum air volume.
- step S8 the control unit 22 opens the heater switch 16 and turns off the external connection heater 8.
- step S8 when the external connection heater 8 is already turned off, the state is maintained.
- step S8 the control unit 22 ends the process.
- step S7: No the controller 22 closes the heater switch 16 and turns on the external connection heater 8 in step S6. After step S6, the control unit 22 ends the process.
- step S9 the control part 22 will have the temperature of external air below the driving
- step S9: Yes the process proceeds to step S4. If the temperature of the outside air is not lower than the operable lower limit temperature (step S9: No), the process proceeds to step S7.
- step S4 and the process of step S7 are as described above.
- the control unit 22 executes the processes from step S1 to step S9 again at the next detection timing after the process ends.
- the control unit 22 operates the air supply blower 5 with a strength smaller than a preset strength, and the external connection heater 8 is turned on.
- the supply air flow through the supply air passage 3 is interlocked with the on / off switching of the external connection heater 8 that heats the supply air flow passing through the supply air passage 3 while prohibiting taking the closed state. Adjust the temperature of the airflow.
- the heat exchange ventilator 21 can prevent overheating of the external connection heater 8 against changes in the amount of air to be heated even in simple heater control in which the amount of heat generated by the external connection heater 8 is not controlled.
- the heat exchange ventilator 21 according to the first embodiment can prevent the outside air taken into the heat exchanger 1 from the outside from being heated more than necessary, and can suppress waste of power consumption.
- the heat exchange ventilator 21 according to the first embodiment can continue ventilation even in a situation where the temperature of the outside air is below the operable lower limit temperature of the heat exchange ventilator 21. Is possible.
- the preset strength is the strength that generates a supply airflow that is one step higher than the minimum airflow, but it generates a supply airflow that is two or more steps above the minimum airflow. It can also be strength.
- FIG. FIG. 4 is a diagram showing a configuration of the heat exchange ventilator according to the second embodiment of the present invention.
- the heat exchange ventilator 26 according to the second embodiment is shown in FIG. 1 in that the heater connection terminal 13 is not provided and the built-in heater 27 is installed in the supply air passage 3 instead of the external connection heater 8. This is different from the heat exchange ventilator 21 according to the first embodiment.
- the built-in heater 27 is a heater that heats the air supply air flowing into the heat exchanger 1 through the air supply air passage 3.
- the first setting storage unit stores not the information indicating whether the heater is connected but the information indicating whether the heater is used.
- the operation of the heat exchange ventilator 26 is the same as the operation of the heat exchange ventilator 21 according to the first embodiment shown in FIG.
- the heat exchanging ventilator 26 according to the second embodiment can prevent overheating of the built-in heater 27 against changes in the amount of air to be heated even in simple heater control in which the amount of heat generated by the built-in heater 27 is not controlled. Moreover, the heat exchange ventilator 26 according to the second embodiment can prevent the outside air from being heated more than necessary, and can suppress waste of power consumption.
- the configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.
Abstract
Description
図1は、本発明の実施の形態1にかかる熱交換換気装置の構成を示す図である。熱交換換気装置21は、屋外の外気空気を室内へ導くための給気風路3と、室内の空気を屋外へ導くための排気風路2と、給気風路3に設けられ屋外から室内へ向かう給気流を発生させる給気送風機5と、排気風路2に設けられ室内から屋外へ向かう排気流を発生させる排気送風機4と、給気風路3及び排気風路2の途中に設けられ、給気風路3を通る給気流と排気風路2を通る排気流との間で熱交換を行う熱交換器1と、給気送風機5及び排気送風機4の運転を制御する制御装置12とを備える。制御装置12には、熱交換換気装置21の操作及び各種設定を行うためのリモートコントローラ18が接続されている。
図4は、本発明の実施の形態2にかかる熱交換換気装置の構成を示す図である。実施の形態2にかかる熱交換換気装置26は、ヒータ接続端子13が設けられておらず、外部接続ヒータ8ではなく内蔵ヒータ27が給気風路3に設置されている点で、図1に示した実施の形態1にかかる熱交換換気装置21と相違する。内蔵ヒータ27は、給気風路3を通って熱交換器1へ流入する給気流を加熱するヒータである。
Claims (6)
- 屋外の外気空気を室内へ導く給気風路と、
室内からの空気を屋外へ導く排気風路と、
前記給気風路に屋外から室内へ向かう給気流を発生させる給気送風機と、
前記排気風路に室内から屋外へ向かう排気流を発生させる排気送風機と、
前記給気風路及び前記排気風路の途中に設けられ、前記給気流と前記排気流との間で熱交換を行う熱交換器と、
前記給気風路の屋外側に接続される屋外側給気ダクト内に設置されて、前記給気風路を通って前記熱交換器へ流入する前記給気流を加熱するヒータが接続されるヒータ接続端子と、
前記給気風路を通る前記給気流の温度を測定する温度センサと、
前記温度センサの測定結果に基づいて、前記給気送風機及び前記排気送風機の運転並びに前記ヒータのオンオフを制御する制御部とを備えた熱交換換気装置であって、
前記給気送風機は、発生させる前記給気流の風量が異なる複数の強度のいずれかで運転可能であり、
前記制御部は、予め設定した強度よりも小さい強度で前記給気送風機が運転され、かつ前記ヒータがオンされた状態をとることを禁止することを特徴とする熱交換換気装置。 - 屋外の外気空気を室内へ導く給気風路と、
室内からの空気を屋外へ導く排気風路と、
前記給気風路に屋外から室内へ向かう給気流を発生させる給気送風機と、
前記排気風路に室内から屋外へ向かう排気流を発生させる排気送風機と、
前記給気風路及び前記排気風路の途中に設けられ、前記給気流と前記排気流との間で熱交換を行う熱交換器と、
前記給気風路を通って前記熱交換器へ流入する前記給気流を加熱するヒータと、
前記給気風路を通る前記給気流の温度を測定する温度センサと、
前記温度センサの測定結果に基づいて、前記給気送風機及び前記排気送風機の運転並びに前記ヒータのオンオフを制御する制御部とを備えた熱交換換気装置であって、
前記給気送風機は、発生させる前記給気流の風量が異なる複数の強度のいずれかで運転可能であり、
前記制御部は、予め設定した強度よりも小さい強度で前記給気送風機が運転され、かつ前記ヒータがオンされた状態をとることを禁止することを特徴とする熱交換換気装置。 - 前記制御部は、前記給気風路を通る給気流の温度を調整するモードを複数有し、複数の前記モードの一つは、予め設定した強度よりも小さい強度で前記給気送風機が運転されている際には前記ヒータをオフさせ、予め設定した強度以上の強度で前記給気送風機が運転されている際には前記ヒータをオンする風量優先モードであることを特徴とする請求項1又は2に記載の熱交換換気装置。
- 前記制御部は、前記給気風路を通る給気流の温度を調整するモードを複数有し、複数の前記モードの一つは、予め設定した強度よりも小さい強度で前記給気送風機が運転されている場合に前記ヒータをオンする際には、前記給気送風機が発生させる前記給気流の風量が大きくなるように前記給気送風機の運転の強度を変更し、予め設定した強度以上の強度で前記給気送風機が運転されている場合に前記ヒータをオンする際には、前記給気送風機の運転の強度を変更せずに前記ヒータをオンするヒータ優先モードであることを特徴とする請求項1又は2に記載の熱交換換気装置。
- 前記制御部は、前記給気風路を通る給気流の温度を調整するモードを複数有し、複数の前記モードの一つは、予め設定した強度よりも小さい強度で前記給気送風機が運転されている際には前記ヒータをオフさせ、予め設定した強度以上の強度で前記給気送風機が運転されている際には前記ヒータをオンする風量優先モードであり、
複数の前記モードの他の一つは、予め設定した強度よりも小さい強度で前記給気送風機が運転されている場合に前記ヒータをオンする際には、前記給気送風機が発生させる前記給気流の風量が大きくなるように前記給気送風機の運転の強度を変更し、予め設定した強度以上の強度で前記給気送風機が運転されている場合に前記ヒータをオンする際には、前記給気送風機の運転の強度を変更せずに前記ヒータをオンするヒータ優先モードであることを特徴とする請求項1又は2に記載の熱交換換気装置。 - 複数の前記モードの一つは、前記温度センサの測定結果が予め設定された運転可能下限温度以下であれば、前記ヒータ優先モードでの制御を行い、前記温度センサの測定結果が予め設定された運転可能下限温度を超えていれば、前記風量優先モードでの制御を行うハイブリッドモードであることを特徴とする請求項5に記載の熱交換換気装置。
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