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JP6074651B2 - Total heat exchange ventilator - Google Patents

Total heat exchange ventilator Download PDF

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JP6074651B2
JP6074651B2 JP2012187176A JP2012187176A JP6074651B2 JP 6074651 B2 JP6074651 B2 JP 6074651B2 JP 2012187176 A JP2012187176 A JP 2012187176A JP 2012187176 A JP2012187176 A JP 2012187176A JP 6074651 B2 JP6074651 B2 JP 6074651B2
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JP2014044011A (en
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吉彦 高山
吉彦 高山
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Panasonic Intellectual Property Management Co Ltd
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Description

本発明は、主にオフィスビルや工場に設置され、複数台設置された空調機の省エネルギーのために使用される全熱交換器型の換気装置に関するものである。   The present invention relates to a total heat exchanger type ventilation device that is installed mainly in an office building or factory and used for energy saving of a plurality of air conditioners.

従来、この種の全熱交換型換気装置は、空調機に一体化され、室内温度や、外気導入の際の外気の温度を計測するためのセンサーを備え、室内と室外の温度を計測することで、省エネルギーの効果を得ようとするような空気調和装置が提案されている。（例えば、特許文献１参照）。   Conventionally, this type of total heat exchange type ventilator is integrated with an air conditioner and has a sensor for measuring the temperature of the room and the temperature of the outside air when the outside air is introduced, and measures the temperature inside and outside the room. Thus, an air conditioner that attempts to obtain an energy saving effect has been proposed. (For example, refer to Patent Document 1).

以下、その全熱交換型換気装置の一例について図を参照しながら説明する。   Hereinafter, an example of the total heat exchange type ventilator will be described with reference to the drawings.

特許文献１について、図５に示すように、空気調和機１００と、この空気調和機に一体にされた全熱交換機２００とを備える空気調和機において、空気調和機１００の運転開始時に、予め設定された設定温度と室内温度との温度差が所定の値以上である場合に全熱交換機を停止、又は風量を減少させ、空調優先の運転が行われ、室温の立ち上がりが早くなり、換気を行う場合に比べて空調性を向上させることができるものである。   About patent document 1, as shown in FIG. 5, in the air conditioner provided with the air conditioner 100 and the total heat exchanger 200 integrated with this air conditioner, it is preset at the start of the operation of the air conditioner 100. If the temperature difference between the set temperature and the room temperature is greater than or equal to the specified value, stop the total heat exchanger or reduce the air volume, and the air-conditioning priority operation will be performed, the rise of the room temperature will be faster, and ventilation will be performed Compared with the case, the air conditioning performance can be improved.

特開平１０−２７４４２５号公報JP-A-10-274425

このような従来の全熱交換型換気装置においては、空調機の運転開始時にのみ室内温度と室内温度設定値の条件を比較し、空調機優先の運転が行われるため、全熱交換型換気装置および、空調機が停止している場合に空調負荷増大には対応できない、という課題を有していた。   In such a conventional total heat exchange type ventilator, the conditions of the room temperature and the indoor temperature set value are compared only at the start of the operation of the air conditioner, and the air conditioner priority operation is performed. And when the air conditioner has stopped, it had the subject that it cannot respond to an air-conditioning load increase.

そこで本発明は、上記従来の課題を解決するものであり、全熱交換型換気装置は停止状態においても、定時的に室外温度、室内温度をサンプリング測定し温度情報を取得することにより、空調機と熱交換型の換気装置を別々に設置しても、換気装置を単独で運転することにより空調機の立ち上がり時以外においても、確実に外気の導入量を減少し、空調機に省エネルギーの効果をもたらすことができる全熱交換型換気装置を提供することを目的とする。   Therefore, the present invention solves the above-described conventional problems, and even when the total heat exchange type ventilator is stopped, the outdoor temperature and the indoor temperature are sampled and measured at regular intervals to obtain temperature information. Even if the heat exchange type ventilator is installed separately, operating the ventilator independently reduces the amount of outside air introduced, even when the air conditioner is not running, and has an energy saving effect on the air conditioner. The object is to provide a total heat exchange ventilator that can be provided.

そして、この目的を達成するために、本発明は、ダンパーの切換え、ファンモータの運転、停止を制御する制御部を備え、この制御部は、本体が停止後一定時間が経過した後、自動的に本体を短時間運転させ、本体内に備えた室外温度、室内温度の検出手段により情報を得た室外と室内の温度差を判断し、夏期において室内温度＞室外温度、または冬期において室内温度＜室外温度の場合に、ダンパーをバイパス換気に切換え、外気を室内に直接取り入れることにより室内空調機負荷を低減可能としたこととしたものであり、これにより所期の目的を達成するものである。 In order to achieve this object, the present invention includes a control unit that controls switching of the damper, operation of the fan motor, and stop, and this control unit automatically operates after a certain period of time has elapsed since the main unit stopped. The main body is operated for a short time, the outdoor temperature provided in the main body, the difference between the outdoor temperature and the indoor temperature obtained by the means for detecting the indoor temperature is judged, and the indoor temperature in the summer > the outdoor temperature or the indoor temperature in the winter < In the case of outdoor temperature, the damper is switched to bypass ventilation, and the outdoor air is directly taken into the room, so that the load on the indoor air conditioner can be reduced, thereby achieving the intended purpose.

本発明によれば、本体停止中においても、定時的に室外温度、室内温度をサンプリング測定をし、室外温度・室内温度情報を得て温度差を判断することにより、熱交換しないバイパス換気を行い外気による室内空調機の負荷を低減させる運転を行うかを判定でき、判
定の結果バイパス換気を行うことにより空調負荷低減させることができる、という効果を得ることができる。 According to the present invention, also in this body during the stop, scheduled to outdoor temperature, the room temperature was sampled measured by determining the temperature difference to obtain outdoor temperature and indoor temperature information, a bypass ventilation without heat exchange It is possible to determine whether to perform an operation to reduce the load of the indoor air conditioner by the outside air, and as a result of the determination, it is possible to obtain an effect that the air conditioning load can be reduced by performing bypass ventilation.

本発明の実施の形態１の全熱交型換気装置の構成を示す図The figure which shows the structure of the total heat exchanger type ventilation apparatus of Embodiment 1 of this invention. 同全熱交型換気装置のバイパス換気運転の制御動作を示す図The figure which shows the control action of the bypass ventilation operation of the total heat exchanger type ventilation device 同全熱交型換気装置のバイパス換気運転のファン回転数を制御する制御動作を示す図The figure which shows the control action which controls the fan rotation speed of bypass ventilation operation of the total heat exchanger type ventilation device 本発明の実施の形態２の全熱交型換気装置の構成を示す図The figure which shows the structure of the total heat exchanger type ventilation apparatus of Embodiment 2 of this invention. 従来の全熱交換器一体型の空気調和装置の構成を示す図The figure which shows the structure of the conventional total heat exchanger integrated air conditioning apparatus.

本発明に係る全熱交換型換気装置は、家室内の空気と屋外の空気を換気する際に熱交換するための全熱交換素子と、屋外の空気を室内に取り入れるための給気ファンモータと、室内の空気を屋外に排出するための排気ファンモータと、熱交換換気と熱交換せず外気を直接取り入れるバイパス換気を切り替えるダンパーを備えた全熱交換型換気装置において、前記ダンパーの切換え、前記ファンモータの運転、停止を制御する制御部を備え、この制御部は、本体の停止後一定時間が経過した後、自動的に本体を短時間運転させ、本体内に備えた室外温度、室内温度の検出手段により情報を得た室外と室内の温度差を判断し、夏期において室内温度＞室外温度、または冬期において室内温度＜室外温度の場合に、ダンパーを前記バイパス換気に切換え、外気を室内に直接取り入れることにより室内空調機負荷を低減可能とした、という構成を有する。これにより、本体停止中においても、定時的に室外温度、室内温度をサンプリング測定し、室外温度・室内温度情報を得て温度差を判断する。この判断に基づいて、熱交換しないバイパス換気を行い外気による室内空調機の負荷を低減させる運転を行うかを判定でき、その結果バイパス換気を行うことにより空調負荷低減を行うことができる、という効果を奏する。 A total heat exchange ventilator according to the present invention includes a total heat exchange element for exchanging heat when ventilating indoor air and outdoor air, and an air supply fan motor for taking outdoor air indoors In the total heat exchange type ventilator having an exhaust fan motor for discharging indoor air to the outdoors, and a damper for switching bypass ventilation for directly taking in outside air without heat exchange ventilation and heat exchange, the switching of the damper, A control unit that controls the operation and stop of the fan motor is provided. This control unit automatically operates the main unit for a short time after a certain period of time has elapsed since the main unit is stopped, and the outdoor temperature and the indoor temperature provided in the main unit. of determining the temperature difference between the outdoor and indoor obtained information by the detection means, when the indoor temperature> outdoor temperature or in winter, indoor temperature <outdoor temperature in summer, switching the damper in the bypass ventilation For example, it has the structure that was possible to reduce the indoor air conditioner load by incorporating directly outside air into the room. Thereby, even when the main body is stopped, the outdoor temperature and the indoor temperature are sampled and measured regularly, and the temperature difference is determined by obtaining the outdoor temperature / indoor temperature information. Based on this determination, it is possible to determine whether to perform bypass ventilation without heat exchange and to reduce the load on the indoor air conditioner due to outside air, and as a result, it is possible to reduce the air conditioning load by performing bypass ventilation Play.

また、制御部は、室外温度と室内温度の温度差が予め定められた温度差以上であるとの情報を得た場合に、給気ファンモータの回転数を増加させ、排気ファンモータの回転数を減少させる、という構成にしてもよい。これにより、給気ファンモータの回転数を増加させ、排気ファンモータの回転数を減少させることにより、給気風量を排気風量よりも多く取り入れることが出来きることとなるので、短時間で外気を利用した、空調負荷低減効果を得ることができる、という効果を奏する。   In addition, when the control unit obtains information that the temperature difference between the outdoor temperature and the indoor temperature is equal to or greater than a predetermined temperature difference, the control unit increases the rotation speed of the supply fan motor and increases the rotation speed of the exhaust fan motor. It may be configured to reduce. As a result, by increasing the number of rotations of the supply fan motor and decreasing the number of rotations of the exhaust fan motor, it is possible to take in a larger amount of supply air than the amount of exhaust air. The effect that the utilized air-conditioning load reduction effect can be acquired is produced.

また、制御部は、室内のＣＯ2濃度を検知するＣＯ2センサーを備え、予め定められたＣＯ2濃度よりも小さい場合には、給気ファンモータの回転数を増加させ、排気ファンモー
タの回転数を減少させる、という構成にしてもよい。これにより、ＣＯ2センサーにより
、室内のＣＯ2濃度を検知し、規定値以下であれば、必要換気量を判断し、排気風量を減
少させ、給気量を増加させてることが出来ることとなるので、必要換気量を確保しながら、短時間で外気を利用した空調負荷低減効果を得ることができる、という効果を奏する。 The control unit includes a CO 2 sensor for detecting the CO 2 concentration in the room, when smaller than the CO 2 concentration to a predetermined increase the rotational speed of the air supply fan motor, rotation of the exhaust fan motor You may make it the structure of reducing a number. As a result, the CO 2 sensor detects the CO 2 concentration in the room, and if it is below the specified value, the necessary ventilation amount can be judged, the exhaust air volume can be reduced, and the supply air quantity can be increased. Therefore, there is an effect that the effect of reducing the air conditioning load using the outside air can be obtained in a short time while securing the necessary ventilation amount.

以下、本発明の実施の形態について図面を参照しながら説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（実施の形態１）
図１は、本実施の形態の全熱交換型換気装置の構成を示す図である。 (Embodiment 1)
FIG. 1 is a diagram showing a configuration of a total heat exchange type ventilator according to the present embodiment.

本実施の形態の全熱交換型換気装置１は、建物の室内１１の天井裏１０などに設置される。その本体内には、室内の空気と屋外の空気を熱交換するための全熱交換素子４と、屋外の空気を室内に取り入れるための給気ファンモータ３と室内の空気を屋外へ排出するための排気ファンモータ２を備えている。全熱交換型換気装置１は、屋外の給気口（図示せ
ず）からダクトを介して、屋外の新鮮な空気を外気取入口２４から取り入れる。また、室内の汚れた空気は、室内の排気口２５から吸い込まれ、ダクトを介して室内空気取入口２１から全熱交換型換気装置１内に取り入れられる（場合によっては、ダクトを介さず全熱交換型換気装置１本体の室内空気取入口２１に直接吸い込まれる）。そして、室内の汚れた空気を排出する際、空調機７で温度調節された室内空気の全熱と、空調機７の負荷となる屋外空気の全熱を交換することで、新鮮な空気を取り入れながら空調機７の熱処理負荷を減少させる構成になっている。熱交換後の屋外空気は、室内給気口２２から室内１１へ供給される。熱交換後の室内空気は、屋外排気口２３から屋外へ排出される。一方、同じ天井裏１０には、室内の温度を調節するため、前述の空調機７が別途設置されている。空調機７は、室内で発生する熱負荷と換気の為に取り入れる外気の熱負荷を目的の設定温度に調節するため、電力を消費している。制御部５は、空調機７の室外温度、室内温度の情報を得るための検出手段６を備えている。また、全熱交換型換気装置１の室内空気取入口２１部分には、熱交換換気ダンパー１３とバイパス換気ダンパー１２を切り替えるダンパーモータ１４が設けられている。さらに、本体内には、給気ファンモータ３及び、排気ファンモータ２が設けられている。制御部５は、ダンパーモータ１４、給気ファンモータ３及び、排気ファンモータ２の運転、停止及び、各ファンモータの速度を強、中、弱などに切り替える制御を行なう。 The total heat exchange type ventilator 1 of the present embodiment is installed in the ceiling 10 of a room 11 of a building. In the main body, a total heat exchange element 4 for exchanging heat between indoor air and outdoor air, a supply fan motor 3 for taking outdoor air into the room, and exhausting indoor air to the outdoors The exhaust fan motor 2 is provided. The total heat exchange type ventilator 1 takes fresh outdoor air from an outdoor air inlet 24 through a duct from an outdoor air supply port (not shown). The dirty air in the room is sucked from the indoor exhaust port 25 and taken into the total heat exchanging ventilator 1 from the indoor air intake 21 through the duct (in some cases, the total heat is not passed through the duct. It is directly sucked into the indoor air intake 21 of the main body of the exchangeable ventilator 1). And when exhausting dirty air in the room, fresh air is taken in by exchanging the total heat of the indoor air whose temperature is adjusted by the air conditioner 7 and the total heat of the outdoor air that is the load of the air conditioner 7. However, the heat treatment load of the air conditioner 7 is reduced. The outdoor air after heat exchange is supplied to the room 11 from the indoor air supply port 22. The indoor air after the heat exchange is discharged to the outdoors from the outdoor exhaust port 23. On the other hand, the above-described air conditioner 7 is separately installed in the same ceiling 10 to adjust the indoor temperature. The air conditioner 7 consumes electric power in order to adjust the heat load generated indoors and the heat load of outside air taken in for ventilation to a target set temperature. The control unit 5 includes detection means 6 for obtaining information on the outdoor temperature and the indoor temperature of the air conditioner 7. In addition, a damper motor 14 that switches between the heat exchange ventilation damper 13 and the bypass ventilation damper 12 is provided at the indoor air intake 21 portion of the total heat exchange type ventilation device 1. Further, an air supply fan motor 3 and an exhaust fan motor 2 are provided in the main body. The controller 5 controls the damper motor 14, the air supply fan motor 3 and the exhaust fan motor 2 to operate, stop, and switch the speed of each fan motor between strong, medium, and weak.

上記構成によって、制御部５は、室外温度センサー８の出力（室外温度）、室内温度センサー９の出力（室内温度）に応じて、熱交換換気Ａとバイパス換気Ｂを切り替える。すなわち、熱交換換気Ａを行う場合、バイパス換気ダンパー１２を開け、熱交換換気ダンパー１３を閉じるようにダンパーモータ１４を切り替える。バイパス換気Ｂを行う場合、バイパス換気ダンパー１２を閉じ、熱交換換気ダンパー１３を開けるようにダンパーモータ１４を切り替える。そして、それぞれの場合に適するよう、給気ファンモータ３、排気ファンモータ２の運転・停止・速度切替を行い、外気の取り入れを制御することで空調機７の消費電力を削減することができる全熱交換型換気装置１となる。   With the above configuration, the control unit 5 switches between the heat exchange ventilation A and the bypass ventilation B according to the output (outdoor temperature) of the outdoor temperature sensor 8 and the output (indoor temperature) of the indoor temperature sensor 9. That is, when performing the heat exchange ventilation A, the damper motor 14 is switched so that the bypass ventilation damper 12 is opened and the heat exchange ventilation damper 13 is closed. When the bypass ventilation B is performed, the damper motor 14 is switched so that the bypass ventilation damper 12 is closed and the heat exchange ventilation damper 13 is opened. Then, all the power consumption of the air conditioner 7 can be reduced by operating / stopping / switching the speed of the air supply fan motor 3 and the exhaust fan motor 2 and controlling the intake of outside air so as to be suitable for each case. The heat exchange type ventilator 1 is obtained.

以下に、冷房時における室外温度、室内温度変化とダンパー、給気ファンモータ３、排気ファンモータ２の動作について図２を用いて説明する。チャートの横軸には時間を、チャートの縦軸には例えば、冷房時において、空調機を停止した後の室外温度と室内温度の変化とダンパーモータ１４の位置、全熱交換型換気装置１の給気ファンモータ３、排気ファンモータ２の回転数を示す。ここで、ダンパーモータ１４が「バイパス換気」の位置にあるときとは、バイパス換気ダンパー１２を閉じ、熱交換換気ダンパー１３を開けている状態、すなわち、「バイパス換気運転」である。ダンパーモータ１４が「熱交換換気」の位置にあるときとは、バイパス換気ダンパー１２を開け、熱交換換気ダンパー１３を閉じている状態、すなわち、「熱交換換気運転」である。   In the following, the outdoor temperature, the indoor temperature change and the damper, the operation of the air supply fan motor 3 and the exhaust fan motor 2 during cooling will be described with reference to FIG. The horizontal axis of the chart indicates time, and the vertical axis of the chart indicates, for example, the change in outdoor temperature and indoor temperature after the air conditioner is stopped, the position of the damper motor 14, the position of the damper motor 14, and the total heat exchange type ventilator 1. The rotation speeds of the supply fan motor 3 and the exhaust fan motor 2 are shown. Here, when the damper motor 14 is in the “bypass ventilation” position is a state in which the bypass ventilation damper 12 is closed and the heat exchange ventilation damper 13 is opened, that is, “bypass ventilation operation”. When the damper motor 14 is in the “heat exchange ventilation” position, the bypass ventilation damper 12 is opened and the heat exchange ventilation damper 13 is closed, that is, “heat exchange ventilation operation”.

図２のチャートの左端の時間は、全熱交換型換気装置１が、熱交換換気運転、あるいは、バイパス換気運転を終了し、給気ファンモータ３、排気ファンモータ２が停止した時刻である。   The time at the left end of the chart in FIG. 2 is the time when the total heat exchange ventilator 1 ends the heat exchange ventilation operation or the bypass ventilation operation, and the supply fan motor 3 and the exhaust fan motor 2 are stopped.

全熱交換型換気装置１が熱交換換気運転、あるいは、バイパス換気運転を停止した後、予め定められた設定時間Ｔ１を超えると、制御部５は、ダンパーモータ１４をバイパス換気の位置に切り替え、給気ファンモータ３、排気ファンモータ２を時間Ｔ２まで運転させる（バイパス換気運転）。そして、室外温度と室内温度の情報を処理し、室外が室内よりも低温、すなわち、室外温度＜室内温度の場合には、そのままバイパス換気運転を継続し、室内に外気を導入する。このようにして、室内の温度を温度の低い外気温度に近づけることができ、室外温度と室内温度の差がなくなった時刻ｔ３で全熱交換型換気装置１のバイパス換気運転を停止させる。上記のように制御すると、空調機７の運転開始時の熱処理負荷を削減することができ、空調機７の消費電力を削減することができるという効果が得
られる。 After the total heat exchange ventilator 1 has stopped the heat exchange ventilation operation or the bypass ventilation operation, when the preset time T1 is exceeded, the control unit 5 switches the damper motor 14 to the bypass ventilation position, The supply fan motor 3 and the exhaust fan motor 2 are operated until time T2 (bypass ventilation operation). Then, the information on the outdoor temperature and the indoor temperature is processed, and when the outdoor temperature is lower than the indoor temperature, that is, when the outdoor temperature <the indoor temperature, the bypass ventilation operation is continued as it is, and the outdoor air is introduced into the room. In this way, the indoor temperature can be brought close to the low outdoor temperature, and the bypass ventilation operation of the total heat exchanging ventilator 1 is stopped at the time t3 when the difference between the outdoor temperature and the indoor temperature disappears. By controlling as described above, it is possible to reduce the heat treatment load at the start of the operation of the air conditioner 7 and to obtain the effect that the power consumption of the air conditioner 7 can be reduced.

図３は、図２に対し、予め定められた時間Ｔ１の設定値を超えると、給気風量を排気風量よりも多くする運転、すなわち、「給気ファンモータ３の回転数」＞「排気ファンモータ２の回転数」となるように、制御部５は、各ファンモータの回転数を制御する。このように制御すると、温度の低い室外空気をより多く取り込むことにより短時間で室内温度を下げることができ、室外の新鮮な空気を取り込みながら空調機７の消費電力を削減することができるという効果が得られる。   FIG. 3 shows an operation in which the supply air volume is made larger than the exhaust air volume when the predetermined time T1 is set, compared to FIG. 2, that is, “the rotation speed of the supply fan motor 3”> “exhaust fan” The control unit 5 controls the rotational speed of each fan motor so that the rotational speed of the motor 2 is reached. By controlling in this way, it is possible to reduce the indoor temperature in a short time by taking in more outdoor air having a low temperature, and reducing the power consumption of the air conditioner 7 while taking in fresh outdoor air. Is obtained.

なお、時間Ｔ１とは、全熱交換型換気装置１の熱交換換気運転（あるいは、バイパス換気運転）が終了してから所定の時間が経過したときを指している。また、時間Ｔ２とは、バイパス換気運転を開始してから所定の時間が経過したときを指している。   The time T1 refers to the time when a predetermined time has elapsed since the heat exchange ventilation operation (or bypass ventilation operation) of the total heat exchange type ventilator 1 is completed. The time T2 indicates the time when a predetermined time has elapsed since the start of the bypass ventilation operation.

また、バイパス換気運転を停止する条件「室外温度と室内温度の差がなくなった」とは、予め設定した所定の温度差よりも、室外温度と室内温度の差が小さくなったとき、を指している。   In addition, the condition for stopping the bypass ventilation operation “the difference between the outdoor temperature and the room temperature has disappeared” refers to when the difference between the outdoor temperature and the room temperature is smaller than the predetermined temperature difference set in advance. Yes.

また、図２，３では、室内が冷房負荷となるような時期（夏期、中間期）を例にして説明した。室内が暖房負荷となるような冬期には、室外温度と室内温度の情報を処理する際、室外が室内よりも高温、すなわち、室外温度＞室内温度の場合に、バイパス換気運転を行うようにする。   In FIGS. 2 and 3, the period when the room is in a cooling load (summer period, intermediate period) has been described as an example. During the winter season when the room is subject to heating load, when processing the outdoor temperature and indoor temperature information, the bypass ventilation operation is performed when the outdoor temperature is higher than the indoor temperature, that is, when the outdoor temperature is higher than the indoor temperature. .

なお、本実施の形態では、バイパス換気ダンパー１２と熱交換換気ダンパー１３をダンパーモータ１４で動作させる構成としたが、１つのダンパーでバイパス換気と熱交換換気を切り替える構成としてもよい。   In the present embodiment, the bypass ventilation damper 12 and the heat exchange ventilation damper 13 are operated by the damper motor 14, but a configuration may be adopted in which the bypass ventilation and the heat exchange ventilation are switched by one damper.

（実施形態２）
次に図４を用いて第２の実施の形態について説明する。第２の実施の形態における制御部５は室内の二酸化炭素濃度（ＣＯ2濃度）を計測する二酸化炭素センサー１５を備えて
いる。制御部５は、二酸化炭素センサー１５により計測した室内の二酸化炭素濃度が例えば５００ｐｐｍ以下などの、換気を停止しても良いと判断した場合にのみ全熱交換型換気装置１の換気量を減少させるように制御する。このようにして、室内の二酸化炭素の濃度を重視した換気を行うことができ、空気の清浄度を重視した、省エネルギー運転を提供できるという効果が得られる。 (Embodiment 2)
Next, a second embodiment will be described with reference to FIG. The controller 5 in the second embodiment includes a carbon dioxide sensor 15 that measures the indoor carbon dioxide concentration (CO 2 concentration). The control unit 5 reduces the ventilation amount of the total heat exchange type ventilator 1 only when it is determined that the ventilation may be stopped, for example, the indoor carbon dioxide concentration measured by the carbon dioxide sensor 15 is 500 ppm or less. To control. In this way, it is possible to perform ventilation with an emphasis on the concentration of carbon dioxide in the room, and the effect of providing energy saving operation with an emphasis on the cleanliness of the air can be obtained.

本発明にかかわる全熱交換型換気装置は、夏場の空調電力ピーク時において、空調機の消費電力を確実に削減することに有用である。   The total heat exchange type ventilator according to the present invention is useful for reliably reducing the power consumption of an air conditioner at the peak of air conditioning power in summer.

１ 全熱交換型換気装置
２ 排気ファンモータ
３ 給気ファンモータ
４ 全熱交換素子
５ 制御部
６ 検出手段
７ 空調機
８ 室外温度センサー
９ 室内温度センサー
１０ 天井裏
１１ 室内
１２ バイパス換気ダンパー
１３ 熱交換換気ダンパー
１４ ダンパーモータ
１５ 二酸化炭素センサー DESCRIPTION OF SYMBOLS 1 Total heat exchange type ventilator 2 Exhaust fan motor 3 Supply air fan motor 4 Total heat exchange element 5 Control part 6 Detection means 7 Air conditioner 8 Outdoor temperature sensor 9 Indoor temperature sensor 10 Back of ceiling 11 Indoor 12 Bypass ventilation damper 13 Heat exchange Ventilation damper 14 Damper motor 15 Carbon dioxide sensor

Claims (3)

室内の空気と屋外の空気を換気する際に熱交換するための全熱交換素子と、
屋外の空気を室内に取り入れるための給気ファンモータと、
室内の空気を屋外に排出するための排気ファンモータと、
熱交換換気運転と熱交換せず外気を直接取り入れるバイパス換気運転を切り替えるダンパーを備えた全熱交換型換気装置において、
前記ダンパーの切換え、前記ファンモータの運転、停止を制御する制御部を備え、
前記制御部は、本体が停止後一定時間が経過した後、自動的に本体を短時間運転させ、本体内に備えた室外温度、室内温度の検出手段により情報を得た室外と室内の温度差を判断し、夏期において室内温度＞室外温度、または冬期において室内温度＜室外温度の場合に、ダンパーを前記バイパス換気運転に切換え、外気を室内に直接取り入れ、その後、室外温度と室内温度の差がなくなった場合に前記バイパス換気運転を停止させることを特徴とした全熱交換型換気装置。 A total heat exchange element for exchanging heat when ventilating indoor air and outdoor air;
An air supply fan motor for taking outdoor air indoors;
An exhaust fan motor for discharging indoor air to the outdoors;
In the total heat exchange type ventilator equipped with a damper that switches between heat exchange ventilation operation and bypass ventilation operation that directly takes in outside air without heat exchange,
A control unit that controls switching of the damper, operation of the fan motor, and stopping,
The control unit automatically operates the main body for a short time after a certain time has elapsed after the main body is stopped, and detects the outdoor temperature provided in the main body and the temperature difference between the outdoor and the indoor obtained by the indoor temperature detection means. If the indoor temperature> outdoor temperature in summer or the indoor temperature <outdoor temperature in winter , the damper is switched to the bypass ventilation operation , and the outside air is directly taken into the room, and then the difference between the outdoor temperature and the room temperature is It lost the bypass ventilation operation is stopped total heat exchange type ventilator characterized by Rukoto when. 制御部は、室外温度と室内温度の温度差が予め定められた温度差以上であるとの情報を得た場合に、給気ファンモータの回転数を増加させ、排気ファンモータの回転数を減少させることを特徴とした請求項１の全熱交換型換気装置。 When the control unit obtains information that the temperature difference between the outdoor temperature and the room temperature is equal to or greater than a predetermined temperature difference, the control unit increases the rotation speed of the supply fan motor and decreases the rotation speed of the exhaust fan motor. The total heat exchange type ventilator according to claim 1, wherein 制御部は、室内のＣＯ2濃度を検知するＣＯ2センサーを備え、予め定められたＣＯ2濃度よりも小さい場合には、排気ファンモータの回転数を減少させることを特徴とした請求項１の全熱交換型換気装置。
Control unit includes a CO 2 sensor for detecting the CO 2 concentration in the room, when smaller than the CO 2 concentration predetermined according to claim 1 which is characterized by reducing the rotational speed of the exhaust fan motor Total heat exchange type ventilator.
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