JP5076745B2 - Ventilation air conditioner - Google Patents

Ventilation air conditioner Download PDF

Info

Publication number
JP5076745B2
JP5076745B2 JP2007225558A JP2007225558A JP5076745B2 JP 5076745 B2 JP5076745 B2 JP 5076745B2 JP 2007225558 A JP2007225558 A JP 2007225558A JP 2007225558 A JP2007225558 A JP 2007225558A JP 5076745 B2 JP5076745 B2 JP 5076745B2
Authority
JP
Japan
Prior art keywords
air
refrigerant
heat exchanger
heat
exhaust
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2007225558A
Other languages
Japanese (ja)
Other versions
JP2009058175A (en
Inventor
充則 松原
裕治 菅田
雅史 坪内
慶 竹下
佳正 勝見
芳寛 西水流
和大 斎藤
Original Assignee
パナソニック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Priority to JP2007225558A priority Critical patent/JP5076745B2/en
Publication of JP2009058175A publication Critical patent/JP2009058175A/en
Application granted granted Critical
Publication of JP5076745B2 publication Critical patent/JP5076745B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/001Compression cycle type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D5/00Hot-air central heating systems; Exhaust gas central heating systems
    • F24D5/02Hot-air central heating systems; Exhaust gas central heating systems operating with discharge of hot air into the space or area to be heated
    • F24D5/04Hot-air central heating systems; Exhaust gas central heating systems operating with discharge of hot air into the space or area to be heated with return of the air or the air-heater
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D5/00Hot-air central heating systems; Exhaust gas central heating systems
    • F24D5/12Hot-air central heating systems; Exhaust gas central heating systems using heat pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/153Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/13Hot air central heating systems using heat pumps

Abstract

The ventilating air-conditioning system includes an air supply fan; an exhaust fan; a compressor; a first heat exchanger heat-exchanging between outdoor air sent from the air supply fan and a refrigerant; an expansion mechanism; a second heat exchanger heat-exchanging between air in a sanitary space sent by the exhaust fan and a refrigerant; and a refrigerant circuit piped so that a refrigerant circulates in order of the compressor, first heat exchanger, expansion mechanism, and second heat exchanger, or in order of the compressor, second heat exchanger, expansion mechanism, and first heat exchanger. The system heats or cools an indoor space while ventilating a sanitary space by transferring heat between the first heat exchanger and second heat exchanger through a refrigerant.

Description

本発明は、ヒートポンプを利用して浴室などのサニタリー空間の換気と室内空間の空調を行う換気空調装置に関する。   The present invention relates to a ventilation air conditioner that uses a heat pump to ventilate a sanitary space such as a bathroom and air-condition an indoor space.
従来のヒートポンプを利用した浴室などの換気空調装置としては、浴室以外の室内空間から取り入れられた空気に対してヒートポンプの一方の熱交換器が放熱(または吸熱)を行い、その空気を浴室内に吹き出すとともに、ヒートポンプの他方の熱交換器が浴室から室外に排出される空気に対して吸熱(または放熱)することで浴室を換気しながら空調するものがある(例えば、特許文献1参照)。   As a conventional ventilation air conditioner such as a bathroom using a heat pump, one heat exchanger of the heat pump radiates (or absorbs) heat from the indoor space other than the bathroom, and the air enters the bathroom. There is one that air-conditions while ventilating the bathroom by blowing out and absorbing heat (or radiating heat) from the other heat exchanger of the heat pump to the air discharged from the bathroom to the outside (for example, see Patent Document 1).
また、ヒートポンプを室外機と室内機に分離し、室外機に設けた熱交換器において外気から吸熱(または放熱)を行い、室内機に設けた熱交換器において浴室の空気に放熱(または吸熱)することで浴室を空調し、室内機に設けた換気送風機により浴室を換気するものもある(例えば、特許文献2参照)。   Also, the heat pump is separated into an outdoor unit and an indoor unit, and heat is absorbed (or radiated) from outside air in the heat exchanger provided in the outdoor unit, and heat is radiated (or absorbed) into the bathroom air in the heat exchanger provided in the indoor unit. In some cases, the bathroom is air-conditioned, and the bathroom is ventilated by a ventilation fan provided in the indoor unit (for example, see Patent Document 2).
また、ヒートポンプ室外機と分離した室内機に顕熱交換気エレメントを備え、換気時に顕熱交換気エレメントにより、顕熱交換をするものもある(例えば、特許文献3参照)。
特開2005−180712号公報 特開2002−349930号公報 特開平9−53840号公報
Some indoor units separated from the heat pump outdoor unit are provided with a sensible heat exchange air element, and sensible heat exchange is performed with the sensible heat exchange air element during ventilation (see, for example, Patent Document 3).
JP 2005-180712 A JP 2002-349930 A JP-A-9-53840
以上のようにヒートポンプを利用した浴室などの換気空調装置は、様々な形態のものが提案されている。特許文献1に例示される浴室空調装置は、換気時に浴室から室外に排出される空気から熱を回収して、浴室以外の室内空間からの空気を空調し浴室に供給するものだが、浴室以外の室内空間に空調しない室外の空気が流入することによりドラフト感などにより快適性が損なわれ、自然給気口付近の結露によるカビの発生や屋外空気の粉塵などによる壁面の汚れなどの課題があった。   As described above, various types of ventilation air conditioners such as bathrooms using heat pumps have been proposed. The bathroom air conditioner exemplified in Patent Document 1 collects heat from the air exhausted from the bathroom to the outside during ventilation, air-conditions air from indoor spaces other than the bathroom, and supplies the air to the bathroom. The outdoor air that is not air-conditioned into the indoor space impairs comfort due to a draft feeling, and there are problems such as mold generation due to condensation near the natural air inlet and dirt on the wall due to dust from outdoor air. .
また、特許文献2に例示される浴室空調装置は、空調時は換気する必要がないが、換気時に熱の回収ができず、ヒートポンプを浴室内と室外に分離して設置しているため、室内外を接続するための冷媒配管工事が必要で施工性が悪くなり、また室外機の設置スペースも必要になるという課題があった。   In addition, the bathroom air conditioner exemplified in Patent Document 2 does not need to be ventilated during air conditioning, but cannot recover heat during ventilation, and the heat pump is installed separately in the bathroom and in the room. There was a problem that the refrigerant piping work for connecting the outside was necessary, the workability deteriorated, and the installation space for the outdoor unit was also required.
また、特許文献3に例示される高気密住宅用空気調和機は、機器内に顕熱エレメント部分のスペースが必要で、顕熱エレメントの圧力損失が大きいことにより換気風量が確保しにくいという課題があった。   Moreover, the air conditioner for high airtight houses exemplified in Patent Document 3 requires a space of the sensible heat element portion in the device, and there is a problem that it is difficult to secure a ventilation air volume due to a large pressure loss of the sensible heat element. there were.
さらに、潜熱も回収して室外に水分を排出しないように、前記顕熱エレメントを全熱エレメントに代えた場合、特許文献3にも記載されているようにトイレなどの臭いが他の部屋に移行する可能性があり、浴室などの換気時に全熱エレメントの結露量が多くなり、排水処理不足による天井裏への滴下や圧力損失が大きくなることによる換気風量不足などの課題や全熱エレメントのメンテナンスが頻繁に必要という課題もあった。   Furthermore, when the sensible heat element is replaced with a total heat element so that latent heat is also collected and moisture is not discharged outside, the odor of a toilet or the like is transferred to another room as described in Patent Document 3. There is a possibility that the condensation amount of the total heat element increases during ventilation in the bathroom, etc., and there are problems such as dripping on the back of the ceiling due to insufficient drainage treatment and insufficient ventilation air volume due to increased pressure loss, and maintenance of the total heat element However, there was a problem that it was necessary frequently.
本発明は上記従来の課題を解決するものであり、室内空間の快適性を向上し、自然給気口付近のカビ繁殖や汚れの防止が図れ、また、省スペース化と施工性の向上を図ることができ、また、より省スペースで、換気風量も確保しやすく、また、臭いの移行が少なく、排水処理も容易で、メンテナンス頻度の少ない換気空調装置を提供することを目的としている。   The present invention solves the above-mentioned conventional problems, improves the comfort of the indoor space, can prevent mold growth and dirt near the natural air inlet, and saves space and improves workability. Further, it is an object of the present invention to provide a ventilation air conditioner that can save space, easily secure ventilation air volume, has little odor transfer, is easy to drain, and has a low maintenance frequency.
上記した目的を達成するために、室外に開口した給気口から室外空気を吸い込んで、室内空間に開口した吹出し口から空気を吹き出す給気ファンと、室内のサニタリー空間に開口した吸込み口から空気を吸い込んで、室外に開口した排気口から空気を吹出す排気ファンと、冷媒を圧縮する圧縮機と、前記給気ファンにより送風される空気と冷媒を熱交換させる第一熱交換器と、冷媒を膨張させる膨張機構と、前記排気ファンにより送風される空気と冷媒を熱交換させる第ニ熱交換器と、前記圧縮機、前記第一熱交換器、前記膨張機構、前記第二熱交換器の順または、前記圧縮機、前記第二熱交換器、前記膨張機構、前記第一熱交換器の順に冷媒が循環するように配管した冷媒回路とを備え、前記第一熱交換器と前記第二熱交換器の間で冷媒により熱を移動させることによって、前記サニタリー空間を換気しながら前記室内空間を暖房または冷房、前記サニタリー空間に開口した吸込み口に吸込まれる空気を前記サニタリー空間以外に設置された空調機によって空調された吹出し空気とし、前記吹出し空気の熱を利用するものであって、前記第一熱交換器と前記第二熱交換器を含む給気風路と排気風路の下部に、凝縮水または結露水を排水または蒸発させる底部に勾配を設けたドレン装置の一番深い部分にドレンポンプを備え、前記ドレン装置より高いところに排水する場合に前記ドレンポンプを運転させる
ことを特徴とするものである。
In order to achieve the above-described object, an air supply fan that sucks outdoor air from an air supply opening that opens to the outside and blows air from an air discharge opening that opens to an indoor space, and an air from an air intake opening that opens to an indoor sanitary space. An exhaust fan that blows out air from an exhaust port that opens to the outside, a compressor that compresses the refrigerant, a first heat exchanger that exchanges heat between the air blown by the air supply fan and the refrigerant, and a refrigerant An expansion mechanism for expanding the air, a second heat exchanger for exchanging heat between the air blown by the exhaust fan and the refrigerant, the compressor, the first heat exchanger, the expansion mechanism, and the second heat exchanger. Or a refrigerant circuit piped so that refrigerant circulates in the order of the compressor, the second heat exchanger, the expansion mechanism, and the first heat exchanger, and the first heat exchanger and the second heat exchanger. Refrigerant into the heat exchanger Ri by moving heat, the ventilating sanitary space by heating or cooling the indoor space while the air conditioning by the air conditioner installed the air drawn in the suction port opened to the sanitary space in addition to the sanitary space And using the heat of the blown air , condensate water or dew condensation water is provided below the air supply and exhaust air passages including the first heat exchanger and the second heat exchanger. A drain pump is provided at the deepest portion of a drain device having a gradient at the bottom for draining or evaporating water, and the drain pump is operated when draining to a higher location than the drain device. Is.
また、凝縮水または結露水を排水または蒸発させるドレン装置にドレンポンプを備え、ドレン装置より高いところに排水する場合に前記ドレンポンプを運転させることを特徴とするものである。   Further, the drain device for draining or evaporating condensed water or condensed water is provided with a drain pump, and the drain pump is operated when draining to a place higher than the drain device.
また、室外空気を吸い込んで室内空間に吹出す給気風路とサニタリー空気を吸い込んで室外に排出する排気風路の周囲を断熱処理したことを特徴とするものである。   Further, the air supply air passage that sucks outdoor air and blows it out to the indoor space and the exhaust air passage that sucks sanitary air and discharges it to the outside are heat-insulated.
また、少なくとも圧縮機、第一熱交換器、第二熱交換器、膨張機構を本体に内蔵したことを特徴とするものである。   Further, at least a compressor, a first heat exchanger, a second heat exchanger, and an expansion mechanism are incorporated in the main body.
また、給気ファンが送風する空気の少なくとも一部を加熱する補助ヒーターを更に備えたことを特徴とするものである。   The air supply fan further includes an auxiliary heater that heats at least a part of the air blown by the air supply fan.
また、排気ファンによって第二熱交換器に供給される前の空気を余熱するための予熱ヒーターを更に備えたことを特徴とするものである。   In addition, a preheating heater for preheating the air before being supplied to the second heat exchanger by the exhaust fan is further provided.
また、第一熱交換器もしくは第二熱交換器に冷媒の温度を検知するコイル温センサーを備え、前記第一熱交換器もしくは第二熱交換器の冷媒温度に基づいて流路切替弁を切替えることを特徴とするものである。   The first heat exchanger or the second heat exchanger is provided with a coil temperature sensor for detecting the temperature of the refrigerant, and the flow path switching valve is switched based on the refrigerant temperature of the first heat exchanger or the second heat exchanger. It is characterized by this.
また、圧縮機の吐出側から膨張機構に至る冷媒回路から分岐して、前記膨張機構から前記圧縮機の吸入側に至る冷媒回路に合流するバイパス回路と前記バイパス回路を開閉する開閉弁を更に備えたことを特徴とするものである。   The apparatus further includes a bypass circuit that branches from a refrigerant circuit that extends from the discharge side of the compressor to the expansion mechanism and merges with a refrigerant circuit that extends from the expansion mechanism to the suction side of the compressor, and an on-off valve that opens and closes the bypass circuit. It is characterized by that.
また、第二熱交換器と直列もしくは並列となるように冷媒回路中に冷媒を加熱する冷媒加熱手段を介在させたことを特徴とするものである。   In addition, a refrigerant heating means for heating the refrigerant is interposed in the refrigerant circuit so as to be in series or in parallel with the second heat exchanger.
また、冷媒加熱手段を電熱により冷媒を加熱する冷媒加熱ヒーターとしたことを特徴とするものである。   Further, the refrigerant heating means is a refrigerant heater that heats the refrigerant by electric heating.
また、冷媒加熱手段を給湯水との熱交換により冷媒を加熱する冷媒−水熱交換器としたことを特徴とするものである。   Further, the refrigerant heating means is a refrigerant-water heat exchanger that heats the refrigerant by exchanging heat with hot water.
また、冷媒−水熱交換器に供給される給湯水に、ヒートポンプ式給湯機で沸かされた湯を用いることを特徴とするものである。   Moreover, the hot water boiled with the heat pump type hot water heater is used for the hot water supplied to the refrigerant-water heat exchanger.
また、冷媒−水熱交換器において冷媒が放熱するように、前記冷媒−水熱交換器に常温水を供給する構成としたことを特徴とするものである。   Further, the refrigerant-water heat exchanger is configured to supply room temperature water to the refrigerant-water heat exchanger so that the refrigerant dissipates heat.
本発明の換気空調装置によれば、サニタリー空間から発生する水分や臭いなどの排気を行いながら、その空気の熱を回収して、室外の新鮮空気を給気しながら室内空間を空調することにより、空気質を向上させながら合わせて省エネな空調ができる。   According to the ventilation air conditioner of the present invention, while exhausting moisture and odor generated from the sanitary space, the heat of the air is recovered and the indoor space is air-conditioned while supplying fresh outdoor air. In addition, air conditioning can be combined with energy saving while improving air quality.
そして、請求項1記載の換気空調装置では、ドレンポンプを運転することにより、凝縮水または結露水をドレン装置より高いところに排水でき、天井裏のスペースが狭く、ドレン勾配がとれない場合にも施工できる。 In the ventilation air conditioner according to claim 1, by operating the drain pump, condensed water or condensed water can be drained higher than the drain device, and the space behind the ceiling is narrow and the drain gradient cannot be taken. Can be constructed .
また、請求項記載の換気空調装置では、給気風路及び排気風路の周囲を断熱処理することにより、換気空調装置の外郭への結露を防止しながら、熱の漏洩を防止して、より省エネ性を向上できる。 Further, in the ventilation air conditioner according to claim 2, by preventing heat from leaking while preventing condensation on the outer wall of the ventilation air conditioner by heat-insulating the surroundings of the air supply and exhaust air passages, Energy saving can be improved.
また、請求項記載の換気空調装置では、浴室の天井裏などに設置した換気空調装置内部に冷媒回路を構成する圧縮機、第一熱交換器、膨張機構、第二熱交換器を全て収納することにより、省スペース化や施工性の向上を図ることができる。 Further, in the ventilation air conditioner according to claim 3 , all of the compressor, the first heat exchanger, the expansion mechanism, and the second heat exchanger that constitute the refrigerant circuit are housed inside the ventilation air conditioner installed in the ceiling of the bathroom or the like. By doing so, it is possible to save space and improve workability.
また、請求項記載の換気空調装置では、補助ヒーターで給気ファンが送風する空気の少なくとも一部を加熱することにより、低温環境における暖房能力不足を補填することができる。 In the ventilating air-conditioning apparatus according to the fourth aspect, it is possible to compensate for a lack of heating capacity in a low temperature environment by heating at least a part of the air blown by the air supply fan with the auxiliary heater.
また、請求項記載の換気空調装置では、予熱ヒーターで第二熱交換器に供給される前の空気を予熱することにより、低温環境における暖房能力の低下や第二熱交換器への着霜の抑制することができ、また、付着した霜の除去を行うことができる。 Further, in the ventilation air conditioner according to claim 5 , by preheating the air before being supplied to the second heat exchanger by the preheating heater, the heating capacity is lowered in the low temperature environment or the frost is formed on the second heat exchanger. In addition, the attached frost can be removed.
また、請求項記載の換気空調装置では、低温時に第一熱交換器もしくは第二熱交換器に霜が付着した場合に冷媒温度に基づいて流路切替弁を切り換えることにより、付着した霜の除去を行うことができる。 Further, in the ventilation air conditioner according to claim 6 , when the frost adheres to the first heat exchanger or the second heat exchanger at a low temperature, the flow path switching valve is switched based on the refrigerant temperature, thereby Removal can be performed.
また、請求項記載の換気空調装置では、低温時に第二熱交換器に霜が付着した場合に冷媒回路の高圧側と低圧側をバイパス回路を通じて開放し、高温の冷媒を第二熱交換器に流通させる若しくは第二熱交換器内の冷媒圧力を上昇させることにより、付着した霜の除去を行うことができる。 Further, in the ventilation air conditioner according to claim 7 , when frost adheres to the second heat exchanger at a low temperature, the high pressure side and the low pressure side of the refrigerant circuit are opened through the bypass circuit, and the high temperature refrigerant is removed from the second heat exchanger. The adhering frost can be removed by circulating the refrigerant or increasing the refrigerant pressure in the second heat exchanger.
また、請求項記載の換気空調装置では、冷媒加熱手段を第二熱交換器と直列もしくは並列となるように冷媒回路中に介在させ、第二熱交換器に霜が付着するなど吸熱能力が低下した場合において、冷媒加熱手段を作動させることにより、吸熱能力を確保して暖房能力を維持することができる。 Moreover, in the ventilation air conditioner according to claim 8 , the refrigerant heating means is interposed in the refrigerant circuit so as to be in series or in parallel with the second heat exchanger, and heat absorption capability such as frost adhering to the second heat exchanger is obtained. In the case of a decrease, by operating the refrigerant heating means, it is possible to secure the heat absorption capability and maintain the heating capability.
また、請求項記載の換気空調装置では、冷媒加熱手段に、電熱によって冷媒を加熱する冷媒加熱ヒーターを用いることにより、冷媒加熱手段の小型化を図ることができる。 In the ventilation air conditioner according to the ninth aspect , the refrigerant heating means can be downsized by using a refrigerant heater for heating the refrigerant by electric heat as the refrigerant heating means.
また、請求項10記載の換気空調装置では、冷媒加熱手段に、給湯水との熱交換によって冷媒を加熱する冷媒−水熱交換器を用いることにより、冷媒加熱手段での電力使用量を削減することができる。 In the ventilation air conditioner according to claim 10 , the refrigerant heating means uses a refrigerant-water heat exchanger that heats the refrigerant by heat exchange with hot water, thereby reducing the amount of power used in the refrigerant heating means. be able to.
また、請求項11記載の換気空調装置では、冷媒−水熱交換器に供給する給湯水に、ヒートポンプ式給湯機で沸かされた湯を用いることにより、冷媒加熱手段の電力使用量を更に削減することができる。 In the ventilation air conditioner according to claim 11 , the amount of electric power used by the refrigerant heating means is further reduced by using hot water boiled by a heat pump type hot water heater as hot water supplied to the refrigerant-water heat exchanger. be able to.
また、請求項12記載の換気空調装置では、夏場などの高温時に放熱能力が不足した場合に冷媒−水熱交換器に供給される常温水に対して冷媒が放熱するように構成することにより、放熱不足を解消して冷房能力を維持することができる。 Further, in the ventilation air conditioner according to claim 12 , by configuring so that the refrigerant radiates heat to the normal temperature water supplied to the refrigerant-water heat exchanger when the heat radiation capability is insufficient at high temperatures such as in summer, The lack of heat dissipation can be resolved and the cooling capacity can be maintained.
本発明は、サニタリー空間以外に設置された空調機によって空調された吹出し空気をサニタリー空間の吸い込み口から吸い込んで熱交換器に供給するものである。これにより本換気空調装置より効率がよい空調機の吹出し空気の熱を利用できる。 This onset Ming is to supply to the heat exchanger inhale air blowoff which is conditioned by the installed air conditioner in addition to sanitary space from the suction port of the sanitary space. Thereby, the heat of the air blown from the air conditioner, which is more efficient than the present ventilation air conditioner, can be used.
また、凝縮水または結露水を排水または蒸発させるドレン装置にドレンポンプを備えたものである。これによりドレンポンプを運転することにより、凝縮水または結露水をドレン装置より高いところに排水できる。   Further, a drain device for draining or evaporating condensed water or condensed water is provided with a drain pump. Thereby, by operating the drain pump, condensed water or condensed water can be drained to a place higher than the drain device.
また、室外空気を吸い込んで室内空間に吹出す給気風路とサニタリー空気を吸い込んで室外に排出する排気風路の周囲を断熱処理したものである。これにより換気空調装置の外郭への結露を防止しながら、外部への熱の漏洩を防止できる。   In addition, the air supply air passage that sucks outdoor air and blows it into the indoor space and the exhaust air passage that sucks sanitary air and discharges it to the outside are heat-insulated. Thereby, the leakage of heat to the outside can be prevented while preventing condensation on the outer wall of the ventilation air conditioner.
また、少なくとも圧縮機、第一熱交換器、第二熱交換器、膨張機構を本体に内蔵したものである。これにより、浴室の天井裏などに設置した換気空調装置内部に冷媒配管で繋がったがった部品を全て収納することができる。   Further, at least a compressor, a first heat exchanger, a second heat exchanger, and an expansion mechanism are built in the main body. Thereby, all the parts which wanted to be connected with refrigerant | coolant piping can be accommodated in the ventilation air conditioner installed in the ceiling back of a bathroom.
また、補助ヒーターで給気ファンが送風する空気の少なくとも一部を加熱するものである。これにより低温環境における暖房能力不足を補填することができる。   The auxiliary heater heats at least a part of the air blown by the air supply fan. Thereby, the shortage of heating capacity in a low temperature environment can be compensated.
また、予熱ヒーターで第二熱交換器に供給される前の空気を予熱するものである。これにより低温環境における暖房能力の低下の防止や第二熱交換器への着霜の抑制および付着した霜の除去を行うことができる。   Moreover, the air before it is supplied to the second heat exchanger by the preheating heater is preheated. Thereby, the fall of the heating capability in a low temperature environment can be prevented, the frost formation to a 2nd heat exchanger can be suppressed, and the adhering frost can be removed.
また、低温時に第一熱交換器もしくは第二熱交換器に霜が付着した場合に冷媒温度に基づいて流路切替弁を切り換えるものである。これにより付着した霜の除去を行うものである。   Further, when frost adheres to the first heat exchanger or the second heat exchanger at a low temperature, the flow path switching valve is switched based on the refrigerant temperature. This removes the attached frost.
また、低温時に第二熱交換器に霜が付着した場合に冷媒回路の高圧側と低圧側をバイパス回路を通じて開放するものである。これにより高温の冷媒を第二熱交換器に流通させる、若しくは第二熱交換器内の冷媒圧力を上昇させて付着した霜の除去を行うことができる。   Moreover, when frost adheres to the second heat exchanger at a low temperature, the high pressure side and the low pressure side of the refrigerant circuit are opened through the bypass circuit. Thereby, a high temperature refrigerant can be circulated through the second heat exchanger, or the adhering frost can be removed by increasing the refrigerant pressure in the second heat exchanger.
また、冷媒加熱手段を第二熱交換器と直列もしくは並列となるように冷媒回路中に介在させたものである。これにより第二熱交換器に霜が付着するなど吸熱能力が低下した場合において、冷媒加熱手段を作動させることにより吸熱能力を確保し、暖房能力を維持することができる。   The refrigerant heating means is interposed in the refrigerant circuit so as to be in series or in parallel with the second heat exchanger. As a result, when the heat absorption capability is lowered, for example, frost adheres to the second heat exchanger, the heat absorption capability can be ensured by operating the refrigerant heating means, and the heating capability can be maintained.
また、冷媒加熱手段に、電熱によって冷媒を加熱する冷媒加熱ヒーターを用いるものである。これにより冷媒加熱手段の小型化を図ることができる。   Further, a refrigerant heater that heats the refrigerant by electric heat is used as the refrigerant heating means. Thereby, size reduction of a refrigerant | coolant heating means can be achieved.
また、冷媒加熱手段に、給湯水との熱交換によって冷媒を加熱する冷媒−水熱交換器を用いるものである。これにより冷媒加熱手段での電力使用量を削減することができる。   Further, a refrigerant-water heat exchanger that heats the refrigerant by heat exchange with hot water is used as the refrigerant heating means. Thereby, the electric power consumption in a refrigerant | coolant heating means can be reduced.
また、冷媒−水熱交換器に供給する給湯水に、ヒートポンプ式給湯機で沸かされた湯を用いるものである。これにより冷媒加熱手段の電力使用量を更に削減することができる。   Moreover, the hot water boiled with the heat pump type water heater is used for the hot water supplied to the refrigerant-water heat exchanger. Thereby, the electric power consumption of a refrigerant | coolant heating means can further be reduced.
また、夏場などの高温時に放熱能力が不足した場合に冷媒−水熱交換器に供給される常温水に対して冷媒が放熱するように構成するものである。これにより、放熱不足を解消して冷房能力を維持するものである。   Moreover, when the heat dissipation capability is insufficient at high temperatures such as in summer, the refrigerant is configured to radiate heat to room temperature water supplied to the refrigerant-water heat exchanger. Thereby, the lack of heat dissipation is eliminated and the cooling capacity is maintained.
(実施の形態1)
以下、本発明の実施の形態1を図1〜7に基づいて説明する。
(Embodiment 1)
Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS.
図1は、本発明の実施形態1にかかる換気空調装置が設置される室内空間の見取り図である。図1において、室内空間1は、リビング2と浴室3、洗面所4、トイレ5などのサニタリー空間6に区画されており、浴室3の天井裏には、換気空調装置の本体7が設置されている。   FIG. 1 is a sketch of an indoor space in which a ventilation air conditioner according to Embodiment 1 of the present invention is installed. In FIG. 1, an indoor space 1 is divided into a sanitary space 6 such as a living room 2, a bathroom 3, a bathroom 4, and a toilet 5, and a main body 7 of a ventilation air conditioner is installed behind the ceiling of the bathroom 3. Yes.
この本体7には、本体7と室外に開口した給気口10とを連通する排気ダクト9、本体7と室外に開口した給気口10とを連通する給気ダクト11、本体7とリビング2の天井に開口した吹出し口12とを連通する吹出しダクト13が接続されている。   The main body 7 includes an exhaust duct 9 that communicates the main body 7 with the air supply opening 10 that opens to the outside, an air supply duct 11 that communicates the main body 7 and the air supply opening 10 that opens to the outside, the main body 7 and the living room 2. A blowout duct 13 communicating with the blowout opening 12 opened in the ceiling is connected.
図2は、換気空調装置の風路構成図であり、図に示すように、本体7内部には排気ファン14が配設されており、また、排気ファン14の吹出し口側には、排気ダクト9を接続する排気接続部19が設けられ、この排気接続部19と浴室3の天井面に設けられたグリル15の吸込み口16とを連通する排気風路20が本体7内部に形成されている。したがって、排気ファン14を運転すると、吸込み口16を通じて浴室3の空気が排気ファン14に吸い込まれ、排気ダクト9を通じて室外に排出される。   FIG. 2 is an air passage configuration diagram of the ventilation air conditioner. As shown in the drawing, an exhaust fan 14 is disposed inside the main body 7, and an exhaust duct is disposed on the outlet side of the exhaust fan 14. 9 is provided, and an exhaust air passage 20 that communicates the exhaust connection portion 19 and the suction port 16 of the grill 15 provided on the ceiling surface of the bathroom 3 is formed inside the main body 7. . Therefore, when the exhaust fan 14 is operated, the air in the bathroom 3 is sucked into the exhaust fan 14 through the suction port 16 and is discharged outside through the exhaust duct 9.
また、本体7内部には給気ファン17が配設されており、また、給気ファン17の吸込み側には、給気ダクト11を接続する給気接続部21が設けられ、前記給気ファン17の吹出し側には、吹出しダクト13を接続する吹出し接続部22が設けられ、前記給気接続部21と吹出し接続部22を連通する給気風路23が本体7内部に形成されている。したがって、給気ファン17を運転すると、給気ダクト11を通じて室外の空気が給気ファン17に吸いこまれ、吹出しダクト13を通じてリビング2に吹出される。   An air supply fan 17 is disposed inside the main body 7, and an air supply connection portion 21 for connecting the air supply duct 11 is provided on the suction side of the air supply fan 17. A blower connection portion 22 that connects the blowout duct 13 is provided on the blowout side 17, and an air supply air passage 23 that connects the air supply connection portion 21 and the blowout connection portion 22 is formed inside the main body 7. Therefore, when the air supply fan 17 is operated, outdoor air is sucked into the air supply fan 17 through the air supply duct 11 and blown out into the living room 2 through the blowout duct 13.
そして排気ファン14と給気ファン17を連続運転するとリビング2内に新鮮な外気が給気され、その空気が浴室3のドアのガラリやアンダーカット部分を通じて浴室3内に流入し、グリル15の吸込み口16から浴室3内の水蒸気や臭いと共に吸込み、室外に排出することになる。   When the exhaust fan 14 and the air supply fan 17 are continuously operated, fresh outside air is supplied into the living room 2, and the air flows into the bathroom 3 through the louver or undercut portion of the door of the bathroom 3, and sucks into the grill 15. The water is sucked from the mouth 16 together with the water vapor and smell in the bathroom 3 and discharged outside the room.
この給気・排気運転は建物の気密性が高い場合は連続して行う必要があるため(24時間換気)、排気ファン14と給気ファン17は所定の給気量・排気量、例えば一時間で室内空間1の約半分の容積に相当する給気・排気量を確保するように連続運転を行う。また、リビング2には部屋の温度をコントロールするための空調機18が設置されており、夏場は冷房運転、冬場は暖房運転を行って室温を適正に保持している。したがって前述したように年間を通じて連続した換気運転を行っていると、夏場はリビング2において空調機18で冷房された低温の空気、冬場は空調機18で暖房された高温の空気が浴室3のドアのガラリやアンダーカット部分を通じて吸込み口16に吸い込まれ、換気空調装置の本体7を介して室外に排出されることになる。   Since this air supply / exhaust operation needs to be performed continuously when the airtightness of the building is high (24-hour ventilation), the exhaust fan 14 and the air supply fan 17 have a predetermined air supply amount / exhaust amount, for example, one hour. Thus, continuous operation is performed so as to secure an air supply / exhaust amount corresponding to about half the volume of the indoor space 1. Further, the living room 2 is provided with an air conditioner 18 for controlling the temperature of the room, and the room temperature is appropriately maintained by performing the cooling operation in the summer and the heating operation in the winter. Therefore, when continuous ventilation operation is performed throughout the year as described above, the low temperature air cooled by the air conditioner 18 in the living room 2 in the summer and the high temperature air heated by the air conditioner 18 in the winter are doors of the bathroom 3. Are sucked into the suction port 16 through the louver or undercut portion and discharged to the outside through the main body 7 of the ventilation air conditioner.
換気空調装置の本体7の底部は浴室3の天井面に対してグリル15の吸込み口16を開口するとともに吸込み口16に着脱自在に塵埃を捕捉するための室内フィルター(図示せず)を配設している。   At the bottom of the main body 7 of the ventilation air conditioner, an air inlet 16 of the grill 15 is opened to the ceiling surface of the bathroom 3 and an indoor filter (not shown) for detachably collecting dust is disposed in the air inlet 16. doing.
また、給気風路23内の給気ファン17の上流側には、給気接続部21から順に、開度調整可能で通路を開閉する給気開閉装置24と屋外の塵埃を補足するための着脱自在な屋外フィルター25と主に室外空気と冷媒を熱交換する第一熱交換器26が設けられ、給気ファン17の下流側には、給気ファン17が送風する空気の少なくとも一部を加熱する補助ヒーター27が設けられている。   Further, on the upstream side of the air supply fan 17 in the air supply air passage 23, an air supply opening / closing device 24 that opens and closes the passage in order from the air supply connection portion 21 and an attachment / detachment for supplementing outdoor dust. A free outdoor filter 25 and a first heat exchanger 26 that mainly exchanges heat between the outdoor air and the refrigerant are provided, and at least a part of the air blown by the air supply fan 17 is heated downstream of the air supply fan 17. An auxiliary heater 27 is provided.
また、排気風路20内の排気ファン14の上流側には、吸込み口16から順に、吸込み空気を予熱する予熱ヒーター28と主に吸込み空気と冷媒を熱交換する第二熱交換器29が設けられ、排気ファン14の下流側には、開度調整可能で通路を開閉する排気開閉装置30が設けられている。   Further, on the upstream side of the exhaust fan 14 in the exhaust air passage 20, a preheat heater 28 for preheating the intake air and a second heat exchanger 29 for mainly exchanging heat between the intake air and the refrigerant are provided in order from the intake port 16. On the downstream side of the exhaust fan 14, an exhaust opening / closing device 30 that can adjust the opening degree and opens and closes the passage is provided.
また、給気風路23内には、前記第一熱交換器26の上流側と排気風路20内で前記第二熱交換器29の上流側を連通または遮断、もしくは連通量を調整可能な風路切替調整手段31が設けられている。   Further, in the supply air passage 23, the upstream side of the first heat exchanger 26 and the upstream side of the second heat exchanger 29 in the exhaust air passage 20 can be connected or blocked, or the communication amount can be adjusted. Air path switching adjustment means 31 is provided.
また、給気風路23内には、室外空気の一部を第一熱交換器26を通さずにリビング2に吹出す給気バイパス手段32を設け、排気風路20内には、浴室空気の一部を第二熱交換機29を通さずに室外に排気する排気バイパス手段33を設けている。   Further, an air supply bypass means 32 for blowing a part of outdoor air to the living room 2 without passing through the first heat exchanger 26 is provided in the air supply air passage 23, and bathroom air is provided in the exhaust air air passage 20. Exhaust bypass means 33 is provided for exhausting part of the heat to the outside without passing through the second heat exchanger 29.
また、排気風路20内には、第二熱交換器29の下流側と給気風路23内で第一熱交換器26の上流側を連通または遮断、もしくは連通量を調整可能な除湿切替手段34が設けられている。   Further, in the exhaust air passage 20, the dehumidification switching that allows communication between the downstream side of the second heat exchanger 29 and the upstream side of the first heat exchanger 26 in the supply air passage 23, or adjustment of the communication amount. Means 34 are provided.
また、本体7内であって第一熱交換器26と第二熱交換器29を含む給気風路23と排気風路20の下部には、大量の結露水を一度貯めた後に排水または蒸発させる、底部に勾配を設けた大型ドレン装置35を備え、大型ドレン装置35の一番深い部分にドレンポンプ36を備え、ドレン配管37を通じて本体7より高いところに排水可能としている。   Further, a large amount of condensed water is once stored in the lower portion of the supply air passage 23 and the exhaust air passage 20 including the first heat exchanger 26 and the second heat exchanger 29 in the main body 7 and then drained or evaporated. A large drain device 35 having a gradient at the bottom is provided, a drain pump 36 is provided at the deepest portion of the large drain device 35, and water can be drained to a location higher than the main body 7 through a drain pipe 37.
また、給気風路23と排気風路20を含む本体7の外郭は断熱材38の貼り付けによる断熱処理が施されている。   Further, the outer shell of the main body 7 including the supply air passage 23 and the exhaust air passage 20 is subjected to heat insulation processing by sticking a heat insulating material 38.
図3は、換気空調装置の冷媒回路図であり、本体7内部に、冷媒として例えば、HCFC系冷媒(分子中に塩素、水素、フッ素、炭素の各原子を含む)、HFC系冷媒(分子中に水素、炭素、フッ素の各原子を含む)、炭化水素、二酸化炭素等の自然冷媒などの何れかを充填した冷媒回路39を形設しており、この冷媒回路39中に、冷媒を圧縮する圧縮機40、前記第一熱交換器26、冷媒を膨張させる電子式膨張弁からなる膨張機構41、前記第二熱交換器29を介設している。   FIG. 3 is a refrigerant circuit diagram of the ventilation air conditioner. Inside the main body 7, for example, an HCFC refrigerant (including each atom of chlorine, hydrogen, fluorine, and carbon), an HFC refrigerant (in the molecule) A refrigerant circuit 39 filled with any one of natural refrigerants such as hydrocarbon, carbon dioxide, etc. is formed, and the refrigerant is compressed into the refrigerant circuit 39. A compressor 40, the first heat exchanger 26, an expansion mechanism 41 including an electronic expansion valve for expanding the refrigerant, and the second heat exchanger 29 are provided.
前記冷媒回路39には、圧縮機40で圧縮された冷媒が第一熱交換器26、膨張機構41、第二熱交換器29の順に流れて再び圧縮機40に戻る経路(以下、暖房サイクル)と、圧縮機40で圧縮された冷媒が第二熱交換器29、膨張機構41、第一熱交熱交換器26の順に流れて再び圧縮機40に戻る経路(以下、冷房サイクル)とを切り換えるための流路切替弁42が介設されている。   In the refrigerant circuit 39, the refrigerant compressed by the compressor 40 flows in the order of the first heat exchanger 26, the expansion mechanism 41, and the second heat exchanger 29 and returns to the compressor 40 again (hereinafter referred to as a heating cycle). And a path (hereinafter referred to as a cooling cycle) in which the refrigerant compressed by the compressor 40 flows in the order of the second heat exchanger 29, the expansion mechanism 41, and the first heat exchange heat exchanger 26 and returns to the compressor 40 again. For this purpose, a flow path switching valve 42 is interposed.
また、冷媒回路39には、流路切替弁42と第一熱交換器26を結ぶ配管中から分岐して膨張機構41と第二熱交換器29を結ぶ配管中に合流するバイパス回路43と、第一熱交換器26と膨張機構41を結ぶ配管中から分岐して第二熱交換器29と流路切替弁42を結ぶ配管中に合流するバイパス回路44を配管しており、バイパス回路43中に開閉弁45を介設するとともにバイパス回路44中に開閉弁46および冷媒加熱手段47を介設している。そして、この冷媒加熱手段47には後述する冷媒加熱ヒーター59や冷媒−水熱交換器66を用いることができる。   The refrigerant circuit 39 includes a bypass circuit 43 that branches from the pipe connecting the flow path switching valve 42 and the first heat exchanger 26 and joins the pipe connecting the expansion mechanism 41 and the second heat exchanger 29, A bypass circuit 44 that branches from the pipe connecting the first heat exchanger 26 and the expansion mechanism 41 and joins the pipe connecting the second heat exchanger 29 and the flow path switching valve 42 is provided in the bypass circuit 43. In addition, an on-off valve 45 and an on-off valve 46 and a refrigerant heating means 47 are provided in the bypass circuit 44. The refrigerant heating means 47 can use a refrigerant heater 59 or a refrigerant-water heat exchanger 66 described later.
また、第一熱交換器26は、給気風路23内に配設されており、第二熱交換器29は、排気風路20内に配設されている。したがって第一熱交換器26においては給気ファン17により送風される主に屋外空気に対して冷媒が放熱(または吸熱)を行い、第二熱交換器29においては排気ファン14により主に浴室3から屋外に排出される空気に対して冷媒が吸熱(もしくは放熱)を行うことになる。   The first heat exchanger 26 is disposed in the supply air passage 23, and the second heat exchanger 29 is disposed in the exhaust air passage 20. Accordingly, in the first heat exchanger 26, the refrigerant dissipates (or absorbs heat) mainly the outdoor air blown by the air supply fan 17, and in the second heat exchanger 29, mainly in the bathroom 3 by the exhaust fan 14. The refrigerant absorbs heat (or dissipates heat) with respect to the air discharged from the outside.
また、第一熱交換器26の冷媒が流れる配管中には第2の開閉弁48とキャピラリチューブ49で構成される減圧手段50を介設しており、第一熱交換器26は、流路切替弁42が冷媒の流れ方向を実線で示す方向、即ち暖房サイクルに切り換えた場合に給気ファン17により送風される室外空気が第一熱交換器26の減圧手段50の下流側を流れる冷媒と熱交換した後に減圧手段50の上流側を流れる冷媒と熱交換を行うように形設されている。   In addition, a decompression means 50 composed of a second on-off valve 48 and a capillary tube 49 is interposed in the pipe through which the refrigerant of the first heat exchanger 26 flows. When the switching valve 42 switches the refrigerant flow direction to the direction indicated by the solid line, that is, when the outdoor air blown by the air supply fan 17 is switched to the heating cycle, the refrigerant flows downstream of the decompression means 50 of the first heat exchanger 26. It is configured to exchange heat with the refrigerant flowing upstream of the decompression means 50 after heat exchange.
さらに排気風路20内の第二熱交換器29の風上側には自己温度制御性を有する予熱ヒーター28が配設されており、この予熱ヒーター28を作動させると排気風路20に吸い込まれた浴室3の空気を予め加熱して第二熱交換器29に供給することができる。   Further, a preheating heater 28 having self-temperature controllability is disposed on the windward side of the second heat exchanger 29 in the exhaust air passage 20. When the preheat heater 28 is operated, the preheat heater 28 is sucked into the exhaust air passage 20. The air in the bathroom 3 can be preheated and supplied to the second heat exchanger 29.
また、第一熱交換器26の膨張機構41側と第二熱交換器29の膨張機構41側には冷媒の温度を検知するコイル温センサー51、52を備えている。   In addition, coil temperature sensors 51 and 52 for detecting the temperature of the refrigerant are provided on the expansion mechanism 41 side of the first heat exchanger 26 and the expansion mechanism 41 side of the second heat exchanger 29.
図4は、換気空調装置の施工図であり、図に示すように、天井裏に設けられたボルト53に本体7の吊り金具54を引っ掛け、本体7を天井面に接しないように吊り下げている。本図の形態では、浴室3からの吸込み空気は吸込みダクト55で本体7内に搬送することとしており、図2の形態と異なっている。   FIG. 4 is a construction diagram of the ventilation air conditioner. As shown in the figure, the suspension fitting 54 of the main body 7 is hooked on the bolt 53 provided on the back of the ceiling, and the main body 7 is suspended so as not to contact the ceiling surface. Yes. In the form of this figure, the intake air from the bathroom 3 is conveyed into the main body 7 by the suction duct 55, which is different from the form of FIG.
また、本体7には空気の搬送のための吹出しダクト13、給気ダクト11、排気ダクト9が接続され、結露水の排水のためのドレン配管37と電源供給のための電源線56も接続されている。   The main body 7 is connected to a blow-out duct 13, an air supply duct 11, and an exhaust duct 9 for conveying air, and a drain pipe 37 for draining condensed water and a power line 56 for supplying power. ing.
また、本体7内には、少なくとも圧縮機40と流路切替弁42と第一熱交換器26と膨張機構41と第二熱交換器29とを順次結ぶ冷媒回路39を備え、本体7の振動を小さくするため及び、本体7の高さを低くするために、圧縮機40は2ローター及び、横置き仕様としている。   The main body 7 further includes a refrigerant circuit 39 that sequentially connects at least the compressor 40, the flow path switching valve 42, the first heat exchanger 26, the expansion mechanism 41, and the second heat exchanger 29. In order to reduce the height of the main body 7 and to reduce the height of the main body 7, the compressor 40 has two rotors and a horizontal installation specification.
また、圧縮機40の振動をさらに吸収するために防振装置57を備え、本体7の躯体への振動伝播を抑えるためにボルト53にも防振装置58を備えている。   Further, a vibration isolator 57 is provided to further absorb the vibration of the compressor 40, and the bolt 53 is also provided with a vibration isolator 58 to suppress vibration propagation to the housing of the main body 7.
図5は、前記冷媒加熱手段47に採用できる冷媒加熱ヒーターの概略構成図であり、図に示すように冷媒加熱ヒーター59は、冷媒を通す冷媒配管をコイル状に巻いて形設した冷媒管路60と、コイル状の冷媒管路60の内周側にU字状に形設した電熱管61と、冷媒管路60の入口部62および出口部63と電熱管61の端子部64を除いた表面を全て覆うようにアルミなどの金属材料を鋳造して中実円筒状に形成された伝熱筒65から構成されている。そして電熱管61の端子部64に所定の電圧を印加すると電熱管61が発熱し、この熱が伝熱筒65内を伝導して電熱管61の外周に配設された冷媒管路60を加熱する。冷媒管路60内には入口部62から冷媒が導入され、冷媒管路60の外周が伝熱筒65で覆われたコイル状の部分を流れる過程で伝熱筒65を介して加熱されて出口部63に導かれる。このようにして冷媒加熱ヒーター59は冷媒を加熱するものであるが、伝熱筒65の中芯部に配設された電熱管61が、その外周方向に配設された冷媒管路60に対して発熱するため外部への熱漏洩が少ないとともに、電熱管61が発した熱が伝熱筒65を伝導して均一に冷媒管路60を加熱することができるため加熱効率が向上して冷媒加熱手段47の小型化を可能にしている。   FIG. 5 is a schematic configuration diagram of a refrigerant heater that can be employed in the refrigerant heating means 47. As shown in the figure, the refrigerant heater 59 is a refrigerant pipe formed by winding a refrigerant pipe through which a refrigerant is passed in a coil shape. 60, the electric heating pipe 61 formed in a U shape on the inner peripheral side of the coiled refrigerant pipe 60, the inlet and outlet parts 62 and 63 of the refrigerant pipe 60 and the terminal part 64 of the electric pipe 61 are excluded. The heat transfer cylinder 65 is formed in a solid cylindrical shape by casting a metal material such as aluminum so as to cover the entire surface. When a predetermined voltage is applied to the terminal portion 64 of the electric heating tube 61, the electric heating tube 61 generates heat, and this heat is conducted through the heat transfer cylinder 65 to heat the refrigerant pipe 60 disposed on the outer periphery of the electric heating tube 61. To do. Refrigerant is introduced into the refrigerant pipe 60 from the inlet 62, and the refrigerant pipe 60 is heated via the heat transfer cylinder 65 in the course of flowing through the coiled portion covered with the heat transfer cylinder 65. Guided to part 63. In this way, the refrigerant heater 59 heats the refrigerant, but the electric heat pipe 61 arranged at the center of the heat transfer cylinder 65 is connected to the refrigerant pipe 60 arranged in the outer peripheral direction. Since heat is generated, there is little heat leakage to the outside, and heat generated by the electric heat pipe 61 can be conducted through the heat transfer cylinder 65 to uniformly heat the refrigerant pipe 60, thereby improving the heating efficiency and heating the refrigerant. The means 47 can be reduced in size.
図6は、前記冷媒加熱手段47に採用できる冷媒−水熱交換器66の概略断面図であり、図に示すように冷媒−水熱交換器66は、給湯機67からの給湯水が流れる給湯管路68の内部に冷媒が流れる冷媒管路69を配設した二重管構造の熱交換器となっている。冷媒管路69は、給湯管路68の内部において二分岐され、分岐した各々が螺旋状に捩れ合うツイスト状に形設されており、これにより伝熱面積を増加させて熱交換効率の向上を図っている。そして給湯管路68の給湯流入部70から冷媒−水熱交換器66内に流入した給湯水は、冷媒管路69の外周を流れて給湯流出部71から冷媒−水熱交換器66外部に流出し、給湯流出部71の下方にある大型ドレン装置35に滴下する。この大型ドレン装置35は、第一熱交換器26および第二熱交換器29に結露したドレン水のドレン受けも兼ねており、大型ドレン装置35に滴下した給湯水は、第一熱交換器26および第二熱交換器29に結露したドレン水とともに、ドレンポンプ36によりドレン配管37を通って本体7外部に排水される。一方、冷媒管路69の冷媒流入部74から冷媒−水熱交換器66内に流入した冷媒は、給湯水の流れに対向する向きで捩れ構造のツイスト管75に各々分岐して流れ、この過程で給湯水との熱交換により加熱されて冷媒流出部76から流出することになる。この冷媒加熱に用いられる給湯水の給湯機67は、燃焼式給湯機でもヒートポンプ式給湯機でも構わないが、ヒートポンプ式の場合は大気の熱を利用して沸かされた温水であるため、冷媒加熱手段47の加熱効率がより向上されるとともにランニングコストが安価にできる。また、給湯流出部71から排出される水を給湯機67に戻すような構造とすれば、給湯管路68に給湯機67で沸かした給湯水ではなく、暖房用循環水を供給することもできる。また、給湯管路68に給湯機で沸かした高温の温水ではなく、常温の給水をそのまま供給することもできる。この場合に流路切替弁42を冷房サイクル側に切り換えて開閉弁46を開放状態に設定すれば、冷媒回路39に圧縮機40で圧縮された高温高圧の冷媒が供給され常温水との熱交換の過程において冷媒を冷却することも可能となる。   FIG. 6 is a schematic cross-sectional view of a refrigerant-water heat exchanger 66 that can be employed in the refrigerant heating means 47. As shown in the drawing, the refrigerant-water heat exchanger 66 is a hot water supply through which hot water from a hot water supply 67 flows. The heat exchanger has a double pipe structure in which a refrigerant pipe 69 through which a refrigerant flows is arranged inside the pipe 68. The refrigerant pipe 69 is bifurcated inside the hot water supply pipe 68 and is formed in a twisted shape in which each of the branches is spirally twisted, thereby increasing the heat transfer area and improving the heat exchange efficiency. I am trying. The hot water flowing into the refrigerant-water heat exchanger 66 from the hot water inflow part 70 of the hot water supply pipe 68 flows through the outer periphery of the refrigerant pipe 69 and flows out from the hot water supply outflow part 71 to the outside of the refrigerant-water heat exchanger 66. Then, it is dropped on the large drain device 35 below the hot water supply / outflow portion 71. The large drain device 35 also serves as a drain receiver for the drain water condensed on the first heat exchanger 26 and the second heat exchanger 29, and the hot water dropped on the large drain device 35 is supplied to the first heat exchanger 26. The drain water condensed on the second heat exchanger 29 is drained out of the main body 7 through the drain pipe 37 by the drain pump 36. On the other hand, the refrigerant that has flowed into the refrigerant-water heat exchanger 66 from the refrigerant inflow portion 74 of the refrigerant pipe 69 flows into the twisted pipe 75 having a twisted structure in a direction opposite to the flow of the hot water. Thus, it is heated by heat exchange with hot water and flows out from the refrigerant outflow portion 76. The hot water heater 67 used for heating the refrigerant may be a combustion type water heater or a heat pump type hot water heater. However, in the case of the heat pump type, the hot water is boiled using the heat of the atmosphere. The heating efficiency of the means 47 can be further improved and the running cost can be reduced. Further, if the structure is such that the water discharged from the hot water supply / outflow portion 71 is returned to the hot water supply 67, it is possible to supply not the hot water boiled by the hot water supply 67 but the circulating water for heating to the hot water supply pipe 68. . In addition, the hot water supply water can be supplied to the hot water supply pipe 68 as it is, not hot hot water boiled by a hot water heater. In this case, if the flow path switching valve 42 is switched to the cooling cycle side and the on-off valve 46 is set to an open state, the high-temperature and high-pressure refrigerant compressed by the compressor 40 is supplied to the refrigerant circuit 39 and heat exchange with room temperature water is performed. It is also possible to cool the refrigerant in the process.
次に換気空調装置の運転動作について説明する。図7は各運転パターンにおける動作状態を示す一覧表である。図に示した一覧表は換気空調装置の各運転パターンを列方向に順に記載しており、その各々の運転パターンにおける主要構成要素の動作状態を行方向に記載している。この換気空調装置は、一覧表に示すように「熱交換気運転」、「給気排気運転」、「給気運転」、「排気運転」、「除湿運転」、「暖房運転」、「冷房運転」、「除湿ぎみ熱交換気運転」「暖房ぎみ熱交換気運転」、「冷房ぎみ熱交換気運転」の10種類の運転パターンを実行することが可能となっている。   Next, the operation of the ventilation air conditioner will be described. FIG. 7 is a list showing operation states in each operation pattern. The list shown in the figure describes each operation pattern of the ventilation air conditioner in order in the column direction, and describes the operation state of the main components in each operation pattern in the row direction. As shown in the table, this ventilation air conditioner is equipped with “heat exchange air operation”, “supply air exhaust operation”, “air supply operation”, “exhaust operation”, “dehumidification operation”, “heating operation”, “cooling operation”. ”,“ Dehumidified heat exchange air operation ”,“ Heating heat exchange air operation ”, and“ Cooling heat exchange air operation ”can be executed.
「熱交換気運転」は、サニタリー空間6の臭いや湿気を急速に排気しながら、室外の新鮮な空気を室内空間1に給気する時に空調機18などで空調された空気の熱を排気時に冷媒に回収して、室外から給気される空気に冷媒によって熱を加え、空調された室内空間1の空気の温湿度に近づけて給気する運転パターンであり、この運転時は、排気ファン14を急速な排気が可能な「強ノッチ」、風路切替調整手段31を排気風路20と給気風路23を確保した「給気排気位置」(図示の状態)に設定し、給気ファン17も排気量と同等の給気量が可能な「強ノッチ」とする。   "Heat exchange air operation" is a method of exhausting the heat of air conditioned by the air conditioner 18 or the like when supplying fresh outdoor air to the indoor space 1 while exhausting the odor and moisture of the sanitary space 6 rapidly. This is an operation pattern in which heat is collected by the refrigerant, heat is applied to the air supplied from the outside by the refrigerant, and the air is supplied close to the temperature and humidity of the air in the air-conditioned indoor space 1. Is set to a “strong notch” capable of rapid exhaust, and the air path switching adjusting means 31 is set to a “supply / exhaust position” (state shown) in which the exhaust air path 20 and the supply air path 23 are secured. The “strong notch” that can supply the same amount of air as the displacement is also used.
また、給気バイパス手段32、排気バイパス手段33、除湿切替手段34は全て「閉鎖」状態とし、補助ヒーター27、予熱ヒーター28は「停止」状態とし、給気開閉装置24、排気開閉装置30は全て「開放」状態に設定する。   In addition, the air supply bypass unit 32, the exhaust bypass unit 33, and the dehumidification switching unit 34 are all in a “closed” state, the auxiliary heater 27 and the preheat heater 28 are in a “stopped” state, and the air supply opening / closing device 24 and the exhaust opening / closing device 30 are Set all to “open” status.
冷媒回路39としては、圧縮機40を消費電力が非常に少ない最低周波数で運転し、流路切替弁42を室外温度と室内温度の差により、例えば冬季であれば「暖房」、夏季であれば「冷房」状態に保持し、膨張機構41は冷凍サイクルが最適となるように都度「開度調整」する。第2の開閉弁48は「開放」状態としてキャピラリーチューブ49に冷媒は通らない。冷媒加熱手段47は「停止」状態とし、開閉弁45、開閉弁46は全て「閉鎖」状態とする。   As the refrigerant circuit 39, the compressor 40 is operated at the lowest frequency with very little power consumption, and the flow path switching valve 42 is “heated” in the winter, for example, in the winter, or in the summer due to the difference between the outdoor temperature and the indoor temperature. While maintaining the “cooling” state, the expansion mechanism 41 “adjusts the opening degree” so that the refrigeration cycle is optimized. The second on-off valve 48 is in an “open” state, and no refrigerant passes through the capillary tube 49. The refrigerant heating means 47 is set to the “stopped” state, and the on-off valve 45 and the on-off valve 46 are all set to the “closed” state.
この状態において、例えば冬季であれば、排気ファン14が「強ノッチ」で運転することにより、室内空間1にて空調機18により暖められた大風量の空気が、廊下やドアのアンダーカットを通り、サニタリー空間6の臭いや湿気を含んだ空気と一緒に天井に設置されたグリル15の吸込み口16から排気風路20を通って、流路切替弁42により「蒸発器」となったフィン&チューブ型の第二熱交換器29で冷媒に吸熱された空気が、排気開閉装置30、排気接続部19、排気ダクト9、排気口8を通って室外に排気される。そして、給気ファン17が「強ノッチ」で運転することにより、室外の冷たい新鮮な大風量の空気が給気口10から入り、給気ダクト11、本体7の給気接続部21、給気開閉装置24、屋外フィルター25、給気風路23を通って、流路切替弁42により「暖房」状態に保持され「凝縮器」となった第一熱交換器26において、圧縮機40により圧縮搬送された冷媒が「蒸発器」である第二熱交換器29で空気から吸熱した熱も含めて室外の冷たい空気に放熱することにより温まった空気となり、吹出し接続部22、吹出しダクト13を通って、吹出し口12からリビング2に吹出される。   In this state, for example, in the winter season, when the exhaust fan 14 operates in a “strong notch”, a large amount of air warmed by the air conditioner 18 in the indoor space 1 passes through the undercuts of the hallway and the door. The fins " evaporator " formed by the passage switching valve 42 through the exhaust air passage 20 from the suction port 16 of the grille 15 installed on the ceiling together with the odor and moisture containing the sanitary space 6 The air absorbed by the refrigerant in the tube-type second heat exchanger 29 is exhausted outside through the exhaust opening / closing device 30, the exhaust connection portion 19, the exhaust duct 9, and the exhaust port 8. Then, when the air supply fan 17 is operated with a “strong notch”, outdoor fresh air with a large air volume enters from the air supply port 10, and the air supply duct 11, the air supply connection portion 21 of the main body 7, the air supply In the first heat exchanger 26, which is maintained in the “heating” state by the flow path switching valve 42 through the switch 24, the outdoor filter 25, and the air supply air passage 23, it is compressed and conveyed by the compressor 40. The generated refrigerant becomes warm air by radiating heat to the cold air outside the room including heat absorbed from the air by the second heat exchanger 29 which is an “evaporator”, and passes through the outlet connection part 22 and the outlet duct 13. The air is blown out into the living room 2 from the air outlet 12.
冷媒は最低周波数で運転する圧縮機40により、比較的低い圧力、温度の気体となって循環量が少なく吐出され、流路切替弁42を通って第一熱交換器26に入り、第2の開閉弁48は「開放」状態のため第一熱交換器26全体で、室外からの大風量の空気に放熱して温度を下げて低温の液体となって、膨張機構41で減圧されて低圧低温の2相状態になり、第二熱交換器29で室内空間1の大風量の空気から吸熱して低圧低温の気体となって、再び圧縮機40に戻る。   The refrigerant is discharged at a relatively low pressure and temperature by a compressor 40 operating at the lowest frequency and is discharged with a small amount of circulation, enters the first heat exchanger 26 through the flow path switching valve 42, and enters the second heat exchanger 26. Since the on-off valve 48 is in the “open” state, the entire first heat exchanger 26 dissipates heat to a large amount of air from the outside, lowers the temperature to become a low temperature liquid, and is decompressed by the expansion mechanism 41 to be low pressure and low temperature. The second heat exchanger 29 absorbs heat from the large volume of air in the indoor space 1 to become a low-pressure and low-temperature gas, and returns to the compressor 40 again.
「蒸発器」である第二熱交換器29のフィンにはサニタリー空間6の湿気が凝縮して結露水となって大型ドレン装置35に流れ落ち、溜まった結露水をドレンポンプ36の運転によりドレン配管37から室外や排水マス等へ排水するまたは、「凝縮器」である第一熱交換器26に吹きかけ、サニタリー空間6の空気を熱交換する時に気化させて排気する。   The moisture of the sanitary space 6 condenses on the fins of the second heat exchanger 29, which is an “evaporator”, flows into the large drain device 35 as condensed water, and the condensed condensed water is drained by the operation of the drain pump 36. It drains from 37 to the outdoor, a drainage mass, etc., or it sprays on the 1st heat exchanger 26 which is a "condenser", and vaporizes and exhausts when the air of the sanitary space 6 is heat-exchanged.
一方、本体7の周囲の断熱材38の断熱効果により、結露と性能ダウンを防止している。   On the other hand, the heat insulating effect of the heat insulating material 38 around the main body 7 prevents condensation and performance degradation.
夏季においては、室内空間1にて空調機18により冷やされた大風量の空気が、サニタリー空間6の臭いや湿気を含んだ空気と一緒に本体7に入り、流路切替弁42により「凝縮器」となった第二熱交換器29で冷媒から吸熱し室外に排気される。そして、室外の暑い新鮮な大風量の空気が本体7に入り、流路切替弁42により「冷房」状態に保持され「蒸発器」となった第一熱交換器26で冷媒に放熱することにより冷やされた空気となってリビング2に吹出される。   In summer, a large amount of air cooled by the air conditioner 18 in the indoor space 1 enters the main body 7 together with the air containing the odor and moisture in the sanitary space 6, and a “condenser” is In the second heat exchanger 29, the heat is absorbed from the refrigerant and exhausted outside the room. Then, outdoor hot air with a large air volume enters the main body 7 and is radiated to the refrigerant by the first heat exchanger 26 which is maintained in the “cooling” state by the flow path switching valve 42 and becomes an “evaporator”. Chilled air is blown out into the living room 2.
こうして、圧縮機40を最低周波数で運転することにより少ない消費電力で、冷媒が第一熱交換器26、第二熱交換器29に循環し、排気ファン14と給気ファン17を「強ノッチ」で運転することにより大風量の空気が排気、給気され、室内空間1の排気の熱を回収して給気に放熱する「熱交換気運転」が行われることになる。   Thus, the refrigerant is circulated to the first heat exchanger 26 and the second heat exchanger 29 with less power consumption by operating the compressor 40 at the lowest frequency, and the exhaust fan 14 and the supply fan 17 are “strong notch”. As a result of the operation, a large amount of air is exhausted and supplied, and a “heat exchange operation” is performed in which the heat of the exhaust in the indoor space 1 is recovered and radiated to the supplied air.
次に「給気排気運転」時の運転動作について説明する。「給気排気運転」は、建築基準法上の換気風量を24時間確保しながら、サニタリー空間6から排気運転をしながら、室内空間1に給気運転をする運転パターンであり、この運転時は、排気ファン14を低消費電力の「弱ノッチ」、風路切替調整手段31を排気風路20と給気風路23を確保した「給気排気位置」(図示の状態)に設定し、給気ファン17も排気量と同等の給気量が可能な「弱ノッチ」とする。   Next, the operation during the “supply / exhaust operation” will be described. “Air supply / exhaust operation” is an operation pattern in which an air supply operation is performed to the indoor space 1 while exhausting from the sanitary space 6 while ensuring ventilation airflow according to the Building Standard Law for 24 hours. The exhaust fan 14 is set to a “weak notch” with low power consumption, and the air path switching adjusting means 31 is set to a “supply / exhaust position” (state shown) in which the exhaust air path 20 and the supply air path 23 are secured. The fan 17 is also set to a “weak notch” that can supply an amount of air equivalent to the displacement.
また、給気バイパス手段32、排気バイパス手段33は全て「開放」状態とし、除湿切替手段34は「閉鎖」状態とし、補助ヒーター27、予熱ヒーター28は「停止」状態とし、給気開閉装置24、排気開閉装置30は全て「開放」状態に設定する。   Further, the air supply bypass unit 32 and the exhaust bypass unit 33 are all set in the “open” state, the dehumidification switching unit 34 is set in the “closed” state, the auxiliary heater 27 and the preheating heater 28 are set in the “stopped” state, and the air supply opening / closing device 24. The exhaust opening / closing devices 30 are all set to the “open” state.
冷媒回路39としては、圧縮機40を停止して冷媒を流さないので、流路切替弁42、膨張機構41、第2の開閉弁48、冷媒加熱手段47、開閉弁45、開閉弁46は全て「停止」状態とする。   Since the refrigerant circuit 39 stops the compressor 40 and does not flow the refrigerant, the flow path switching valve 42, the expansion mechanism 41, the second on-off valve 48, the refrigerant heating means 47, the on-off valve 45, and the on-off valve 46 are all used. Set to “Stop” state.
この状態において、例えば春や秋の中間期に、排気ファン14が「弱ノッチ」で運転することにより、建材や家具等から発生するVOCなどを含んだ室内空間1の空気が、廊下やドアのアンダーカットを通り、サニタリー空間6の天井に設置されたグリル15の吸込み口16から排気風路20を通って、「開放」状態である排気バイパス手段33を主に通って、排気開閉装置30、排気接続部19、排気ダクト9、排気口8を通って室外に排気される。そして、給気ファン17が「弱ノッチ」で運転することにより、室外の新鮮な空気が給気口10から入り、給気ダクト11、本体7の給気接続部21、給気開閉装置24、屋外フィルター25、給気風路23を通って、「開放」状態である給気バイパス手段32を主に通って、吹出し接続部22、吹出しダクト13を通って、吹出し口12からリビング2に吹出される。   In this state, for example, in the middle of spring or autumn, when the exhaust fan 14 is operated with a “weak notch”, the air in the indoor space 1 including VOCs generated from building materials, furniture, and the like is transferred to the hallways and doors. The exhaust opening and closing device 30 passes through the undercut, passes through the exhaust air passage 20 from the suction port 16 of the grill 15 installed on the ceiling of the sanitary space 6, and mainly passes through the exhaust bypass means 33 in the "open" state. Exhaust air is exhausted through the exhaust connection portion 19, the exhaust duct 9, and the exhaust port 8. Then, when the air supply fan 17 is operated with a “weak notch”, fresh outdoor air enters from the air supply port 10, and the air supply duct 11, the air supply connection portion 21 of the main body 7, the air supply opening / closing device 24, The air passes through the outdoor filter 25 and the air supply passage 23, passes mainly through the air supply bypass means 32 in the “open” state, passes through the outlet connection portion 22 and the outlet duct 13, and is blown out from the outlet 12 to the living room 2. The
こうして、排気ファン14と給気ファン17を「弱ノッチ」で運転することにより非常に少ない消費電力で、少風量の室内空間1の空気が排気され、室外空気が給気される「給気排気運転」が行われることになる。   Thus, by operating the exhaust fan 14 and the air supply fan 17 with “weak notch”, the air in the indoor space 1 with a small amount of air is exhausted and the outdoor air is supplied with very little power consumption. Driving "will be performed.
次に「給気運転」時の運転動作について説明する。「給気運転」は、室内の温度より室外の温湿度が快適な場合や室内の清浄度より室外の清浄度が高い場合などに、室内空間1に給気運転だけをする運転パターンであり、この運転時は、排気ファン14を停止し、風路切替調整手段31を排気風路20と給気風路23を確保した「給気排気位置」(図示の状態)に設定し、給気ファン17を低消費電力の「弱ノッチ」運転する。   Next, the operation during the “air supply operation” will be described. “Air supply operation” is an operation pattern in which only the air supply operation is performed in the indoor space 1 when the outdoor temperature and humidity are more comfortable than the indoor temperature or when the outdoor cleanliness is higher than the indoor cleanliness. During this operation, the exhaust fan 14 is stopped, the air path switching adjusting means 31 is set to the “supply / exhaust position” (state shown) in which the exhaust air path 20 and the air supply path 23 are secured, and the air supply fan 17. Operate with “low notch” with low power consumption.
また、給気バイパス手段32、排気バイパス手段33は全て「開放」状態とし、除湿切替手段34は「閉鎖」状態とし、補助ヒーター27、予熱ヒーター28は「停止」状態とし、給気開閉装置24、排気開閉装置30は全て「開放」状態に設定する。   Further, the air supply bypass unit 32 and the exhaust bypass unit 33 are all set in the “open” state, the dehumidification switching unit 34 is set in the “closed” state, the auxiliary heater 27 and the preheating heater 28 are set in the “stopped” state, and the air supply opening / closing device 24. The exhaust opening / closing devices 30 are all set to the “open” state.
冷媒回路39としては、圧縮機40を停止して冷媒を流さないので、流路切替弁42、膨張機構41、第2の開閉弁48、冷媒加熱手段47、開閉弁45、開閉弁46は全て「停止」状態とする。   Since the refrigerant circuit 39 stops the compressor 40 and does not flow the refrigerant, the flow path switching valve 42, the expansion mechanism 41, the second on-off valve 48, the refrigerant heating means 47, the on-off valve 45, and the on-off valve 46 are all used. Set to “Stop” state.
この状態において、例えば春や秋の中間期に、給気ファン17が「弱ノッチ」で運転することにより、室外の新鮮な空気が給気口10から入り、給気ダクト11、本体7の給気接続部21、給気開閉装置24、屋外フィルター25、給気風路23を通って、「開放」状態である給気バイパス手段32を主に通って、吹出し接続部22、吹出しダクト13を通って、吹出し口12からリビング2に吹出される。   In this state, for example, in the middle of spring or autumn, when the air supply fan 17 operates in a “weak notch”, fresh outdoor air enters from the air inlet 10, and the air supply duct 11 and the main body 7 are supplied. The air connection 21, the air supply opening / closing device 24, the outdoor filter 25, and the air supply air passage 23 are passed through the air supply bypass means 32 that is in the “open” state, through the air outlet connection 22 and the air outlet duct 13. Then, the air is blown out from the outlet 12 to the living room 2.
こうして、給気ファン17を「弱ノッチ」で運転することにより非常に少ない消費電力で、少風量の室外空気が給気される「給気運転」が行われることになる。   Thus, by operating the air supply fan 17 with the “weak notch”, “air supply operation” is performed in which a small amount of outdoor air is supplied with very little power consumption.
次に「排気運転」時の運転動作について説明する。「排気運転」は、室内空間1の環境をあまり変えない場合などに、サニタリー空間6の排気運転だけをする運転パターンであり、この運転時は、給気ファン17を停止し、風路切替調整手段31を排気風路20と給気風路23を確保した「給気排気位置」(図示の状態)に設定し、排気ファン14を低消費電力の「弱ノッチ」運転する。   Next, the operation during “exhaust operation” will be described. The “exhaust operation” is an operation pattern in which only the exhaust operation of the sanitary space 6 is performed when the environment of the indoor space 1 is not significantly changed. During this operation, the air supply fan 17 is stopped and the air path switching adjustment is performed. The means 31 is set to the “supply / exhaust position” (state shown) in which the exhaust air passage 20 and the supply air passage 23 are secured, and the exhaust fan 14 is operated in a “weak notch” operation with low power consumption.
また、給気バイパス手段32、排気バイパス手段33は全て「開放」状態とし、除湿切替手段34は「閉鎖」状態とし、補助ヒーター27、予熱ヒーター28は「停止」状態とし、給気開閉装置24、排気開閉装置30は全て「開放」状態に設定する。   Further, the air supply bypass unit 32 and the exhaust bypass unit 33 are all set in the “open” state, the dehumidification switching unit 34 is set in the “closed” state, the auxiliary heater 27 and the preheating heater 28 are set in the “stopped” state, and the air supply opening / closing device 24. The exhaust opening / closing devices 30 are all set to the “open” state.
冷媒回路39としては、圧縮機40を停止して冷媒を流さないので、流路切替弁42、膨張機構41、第2の開閉弁48、冷媒加熱手段47、開閉弁45、開閉弁46は全て「停止」状態とする。   Since the refrigerant circuit 39 stops the compressor 40 and does not flow the refrigerant, the flow path switching valve 42, the expansion mechanism 41, the second on-off valve 48, the refrigerant heating means 47, the on-off valve 45, and the on-off valve 46 are all used. Set to “Stop” state.
この状態において、例えば春や秋の中間期に、排気ファン14が「弱ノッチ」で運転することにより、建材や家具等から発生するVOCなどを含んだ室内空間1の空気が、廊下やドアのアンダーカットを通り、サニタリー空間6の天井に設置されたグリル15の吸込み口16から排気風路20を通って、「開放」状態である排気バイパス手段33を主に通って、排気開閉装置30、排気接続部19、排気ダクト9、排気口8を通って室外に排気される。   In this state, for example, in the middle of spring or autumn, when the exhaust fan 14 is operated with a “weak notch”, the air in the indoor space 1 including VOCs generated from building materials, furniture, and the like is transferred to the hallways and doors. The exhaust opening and closing device 30 passes through the undercut, passes through the exhaust air passage 20 from the suction port 16 of the grill 15 installed on the ceiling of the sanitary space 6, and mainly passes through the exhaust bypass means 33 in the "open" state. Exhaust air is exhausted through the exhaust connection portion 19, the exhaust duct 9, and the exhaust port 8.
こうして、排気ファン14を「弱ノッチ」で運転することにより非常に少ない消費電力で、少風量のサニタリー空間6の空気が排気される「排気運転」が行われることになる。   Thus, by operating the exhaust fan 14 with “weak notch”, “exhaust operation” in which the air in the sanitary space 6 with a small amount of air is exhausted with very little power consumption is performed.
次に「除湿運転」時の運転動作について説明する。「除湿運転」は、梅雨時期の高湿時や家事などによる生活発湿に対する快適性向上や壁面などのカビ抑制のため、室内空間1を再熱除湿する場合に選択される運転パターンである。この「除湿運転」を実行する場合は、排気ファン14を停止し、風路切替調整手段31を排気風路20と給気風路23を確保した「給気排気位置」(図示の状態)に設定し、除湿切替手段34を排気風路20と給気風路23とを連通する「開放」状態とし、給気開閉装置24、排気開閉装置30は全て「閉鎖」状態として、給気ファン17を「強ノッチ」とする。   Next, the operation during the “dehumidifying operation” will be described. The “dehumidifying operation” is an operation pattern selected when the indoor space 1 is reheated and dehumidified in order to improve the comfort of living moisture due to high humidity in the rainy season or housework, and to suppress mold on the wall surface. When this “dehumidifying operation” is executed, the exhaust fan 14 is stopped, and the air path switching adjusting means 31 is set to the “supply / exhaust position” (state shown) in which the exhaust air path 20 and the supply air path 23 are secured. Then, the dehumidification switching means 34 is set to the “open” state in which the exhaust air passage 20 and the air supply air passage 23 are communicated, and the air supply opening / closing device 24 and the exhaust air opening / closing device 30 are all set to the “closed” state. Strong notch ”.
また、給気バイパス手段32、排気バイパス手段33は全て「閉鎖」状態とし、補助ヒーター27、予熱ヒーター28は「停止」状態に設定する。   Further, the air supply bypass unit 32 and the exhaust bypass unit 33 are all set in a “closed” state, and the auxiliary heater 27 and the preheat heater 28 are set in a “stopped” state.
冷媒回路39としては、圧縮機を室内空間1の吸い込み空気の温湿度により調整した周波数で運転し、流路切替弁42を「暖房」状態に保持し、膨張機構41は冷凍サイクルが最適となるように都度「開度調整」する。第2の開閉弁48は「開放」状態としてキャピラリーチューブ49に冷媒は通らない。冷媒加熱手段47は「停止」状態とし、開閉弁45、開閉弁46は全て「閉鎖」状態とする。   As the refrigerant circuit 39, the compressor is operated at a frequency adjusted by the temperature and humidity of the intake air in the indoor space 1, the flow path switching valve 42 is kept in the "heating" state, and the expansion mechanism 41 has the optimum refrigeration cycle. As described above, the “opening adjustment” is performed. The second on-off valve 48 is in an “open” state, and no refrigerant passes through the capillary tube 49. The refrigerant heating means 47 is set to the “stopped” state, and the on-off valve 45 and the on-off valve 46 are all set to the “closed” state.
この状態において、排気開閉装置30と給気開閉装置24が全て「閉鎖」状態でかつ、除湿切替手段34が「開放」状態となっていることにより、給気ファン17が「強ノッチ」で運転すると排気風路20が負圧となり、室内空間1の湿気を多く含んだ大風量の空気が、廊下やドアのアンダーカットを通り、サニタリー空間6の空気と一緒に天井に設置されたグリル15の吸込み口16から排気風路20に流入する。その後、流路切替弁42により「蒸発器」となったフィン&チューブ型の第二熱交換器29で冷媒に吸熱除湿され、給気風路23に流入し、「凝縮器」となった第一熱交換器26で加熱され、除湿された空気が温まり、吹出し接続部22、吹出しダクト13を通って、吹出し口12からリビング2に吹出される。   In this state, since the exhaust opening / closing device 30 and the air supply opening / closing device 24 are all in the “closed” state and the dehumidification switching means 34 is in the “open” state, the air supply fan 17 is operated in the “strong notch”. Then, the exhaust air passage 20 becomes negative pressure, and a large amount of air containing a large amount of moisture in the indoor space 1 passes through the undercuts of the hallways and doors, and the grill 15 installed on the ceiling together with the air in the sanitary space 6 It flows into the exhaust air passage 20 from the suction port 16. Thereafter, the refrigerant is endothermic and dehumidified by the fin-and-tube second heat exchanger 29 that becomes an “evaporator” by the flow path switching valve 42, flows into the supply air passage 23, and becomes the “condenser”. The air that has been heated and dehumidified by the heat exchanger 26 is warmed, and blown out from the blowout opening 12 to the living room 2 through the blowout connection portion 22 and the blowout duct 13.
冷媒は、適当な周波数で運転する圧縮機40により、適度に高い圧力と温度の気体となって吐出され、流路切替弁42を通って第一熱交換器26に入り、第2の開閉弁48が「開放」状態のため、第一熱交換器26部分では、第二熱交換器29で低温低湿となった室内空間1からの大風量の空気に放熱して温度を下げて低温の液体となって、さらに、膨張機構41で減圧されて低圧低温の2相状態になり、第二熱交換器29部分では、室内空間1の大風量の空気から吸熱して低圧低温の気体となって、再び圧縮機40に戻る。   The refrigerant is discharged as a gas having an appropriately high pressure and temperature by the compressor 40 operating at an appropriate frequency, passes through the flow path switching valve 42, enters the first heat exchanger 26, and enters the second on-off valve. Since 48 is in an “open” state, in the first heat exchanger 26 portion, the low-temperature liquid is radiated to the large amount of air from the indoor space 1 that has become low-temperature and low-humidity in the second heat exchanger 29 to lower the temperature. Further, the pressure is reduced by the expansion mechanism 41 to be in a low-pressure and low-temperature two-phase state, and in the second heat exchanger 29 part, heat is absorbed from a large amount of air in the indoor space 1 to become a low-pressure and low-temperature gas. Return to the compressor 40 again.
「蒸発器」である第二熱交換器29のフィンにはサニタリー空間6の湿気が凝縮して結露水となって大型ドレン装置35に流れ落ち、溜まった結露水をドレンポンプ36の運転によりドレン配管37から室外や排水マス等へ排水する。   The moisture of the sanitary space 6 condenses on the fins of the second heat exchanger 29, which is an “evaporator”, flows into the large drain device 35 as condensed water, and the condensed condensed water is drained by the operation of the drain pump 36. Drain from 37 to the outside or drainage mass.
一方、本体7の周囲の断熱材38の断熱効果により、結露と性能ダウンを防止している。   On the other hand, the heat insulating effect of the heat insulating material 38 around the main body 7 prevents condensation and performance degradation.
こうして、圧縮機40を適正な周波数で運転することにより、冷媒が第一熱交換器26、第二熱交換器29に循環し、排気開閉装置30と給気開閉装置24が全て「閉鎖」状態でかつ、除湿切替手段34が「開放」状態としながら、給気ファン17を「強ノッチ」で運転することにより大風量の空気が、室内空間1の除湿時の熱を回収して再熱する「除湿運転」が行われることになる。   Thus, by operating the compressor 40 at an appropriate frequency, the refrigerant circulates to the first heat exchanger 26 and the second heat exchanger 29, and the exhaust opening / closing device 30 and the supply air opening / closing device 24 are all in the “closed” state. In addition, by operating the air supply fan 17 in the “strong notch” while the dehumidification switching unit 34 is in the “open” state, the large air volume recovers the heat at the time of dehumidification of the indoor space 1 and reheats it. "Dehumidifying operation" will be performed.
次に「暖房運転」時の運転動作について説明する。「暖房運転」は、冬季等に室内空間1を暖房して、快適性を向上させるもしくは、空調機18の暖房負荷を軽減する場合に選択される運転パターンである。この運転時は、風路切替調整手段31を排気風路20と給気風路23を室外からの給気が第一熱交換器26を通り、室内空間1の排気が第二熱交換器29を通るようにした「暖房・冷房位置」に設定し、排気ファン14を「強ノッチ」、給気ファン17も「強ノッチ」運転とする。   Next, the operation during the “heating operation” will be described. “Heating operation” is an operation pattern selected when the indoor space 1 is heated in winter or the like to improve comfort or reduce the heating load of the air conditioner 18. During this operation, the air passage switching adjustment means 31 is supplied to the exhaust air passage 20 and the supply air passage 23 from the outside through the first heat exchanger 26, and the exhaust in the indoor space 1 passes through the second heat exchanger 29. The “heating / cooling position” is set so as to pass, the exhaust fan 14 is set to “strong notch”, and the air supply fan 17 is also set to “strong notch” operation.
また、給気バイパス手段32、排気バイパス手段33、除湿切替手段34は全て「閉鎖」状態とし、補助ヒーター27、予熱ヒーター28は「停止」状態とし、給気開閉装置24、排気開閉装置30は全て「開放」状態に設定する。   In addition, the air supply bypass unit 32, the exhaust bypass unit 33, and the dehumidification switching unit 34 are all in a “closed” state, the auxiliary heater 27 and the preheat heater 28 are in a “stopped” state, and the air supply opening / closing device 24 and the exhaust opening / closing device 30 are Set all to “open” status.
冷媒回路39としては、圧縮機40を室内空間1や室外空気の温度により周波数を調整しながらで運転し、流路切替弁42を「暖房」状態に保持し、膨張機構41は冷凍サイクルが最適となるように都度「開度調整」する。第2の開閉弁48は「開放」状態としてキャピラリーチューブ49に冷媒は通らない。冷媒加熱手段47は「停止」状態とし、開閉弁45、開閉弁46は全て「閉鎖」状態とする。   As the refrigerant circuit 39, the compressor 40 is operated while adjusting the frequency according to the temperature of the indoor space 1 or the outdoor air, the flow path switching valve 42 is maintained in the “heating” state, and the expansion mechanism 41 has an optimal refrigeration cycle. "Opening adjustment" is performed each time so that The second on-off valve 48 is in an “open” state, and no refrigerant passes through the capillary tube 49. The refrigerant heating means 47 is set to the “stopped” state, and the on-off valve 45 and the on-off valve 46 are all set to the “closed” state.
この状態において、排気ファン14が「強ノッチ」で運転することにより、室内空間1の大風量の空気が、廊下やドアのアンダーカットを通り、サニタリー空間6の空気と一緒に天井に設置されたグリル15の吸込み口16から排気風路20を通って、「暖房・冷房位置」に設定された風路切替調整手段31により、流路切替弁42により「凝縮器」となったフィン&チューブ型の第一熱交換器26で、圧縮機40により圧縮搬送された冷媒に放熱された空気が、吹出し接続部22、吹出しダクト13を通って、吹出し口12からリビング2に吹出される。そして、給気ファン17が「強ノッチ」で運転することにより、室外の大風量の空気が給気口10から入り、給気ダクト11、本体7の給気接続部21、給気開閉装置24、屋外フィルター25、給気風路23を通って、「暖房・冷房位置」に設定された風路切替調整手段31により、流路切替弁42により「暖房」状態に保持されて「蒸発器」となった第二熱交換器29において冷媒に吸熱され、排気開閉装置30、排気接続部19、排気ダクト9、排気口8を通って室外に排気される。   In this state, when the exhaust fan 14 is operated with a “strong notch”, a large amount of air in the indoor space 1 passes through the undercuts of the hallway and doors and is installed on the ceiling together with the air in the sanitary space 6. The fin and tube type that has become a “condenser” by the flow path switching valve 42 by the air path switching adjustment means 31 set to the “heating / cooling position” through the exhaust air path 20 from the suction port 16 of the grill 15. In the first heat exchanger 26, the air radiated to the refrigerant compressed and conveyed by the compressor 40 is blown out from the outlet 12 to the living room 2 through the outlet connection portion 22 and the outlet duct 13. When the air supply fan 17 is operated with a “strong notch”, a large amount of outdoor air enters from the air supply port 10, and the air supply duct 11, the air supply connection portion 21 of the main body 7, and the air supply opening / closing device 24. The air passage switching adjusting means 31 set to the “heating / cooling position” passes through the outdoor filter 25 and the supply air passage 23, and is maintained in the “heating” state by the flow passage switching valve 42. In the second heat exchanger 29, the refrigerant absorbs heat and is exhausted to the outside through the exhaust opening / closing device 30, the exhaust connection portion 19, the exhaust duct 9, and the exhaust port 8.
冷媒は適当な周波数で運転する圧縮機40により、高い圧力、温度の気体となって吐出され、流路切替弁42を通って第一熱交換器26に入り、第2の開閉弁48は「開放」状態のため第一熱交換器26全体で、室内空間1からの大風量の空気に放熱して温度を下げて低温の液体となって、膨張機構41で減圧されて低圧低温の2相状態になり、第二熱交換器29で室外の大風量の空気から吸熱して低圧低温の気体となって、再び圧縮機40に戻る。   The refrigerant is discharged as a gas having a high pressure and temperature by the compressor 40 operating at an appropriate frequency, enters the first heat exchanger 26 through the flow path switching valve 42, and the second on-off valve 48 is “ Because of the "open" state, the first heat exchanger 26 as a whole dissipates heat to a large amount of air from the indoor space 1 to lower the temperature to become a low-temperature liquid, which is decompressed by the expansion mechanism 41 and is low-pressure low-temperature two-phase In this state, the second heat exchanger 29 absorbs heat from the air with a large air volume outside to become a low-pressure and low-temperature gas, and returns to the compressor 40 again.
「蒸発器」である第二熱交換器29のフィンには室外の湿気が凝縮して結露水となって大型ドレン装置35に流れ落ち、溜まった結露水をドレンポンプ36の運転によりドレン配管37から室外や排水マス等へ排水するまたは、「凝縮器」である第一熱交換器26に吹きかけ、室内空間1の空気を熱交換する時に気化させて、暖房しながら加湿する。   The outdoor heat is condensed on the fins of the second heat exchanger 29 which is an “evaporator” and flows into the large drain device 35 as dew condensation water, and the accumulated dew condensation water is discharged from the drain pipe 37 by the operation of the drain pump 36. It drains to the outdoors, a drainage mass, etc., or it sprays on the 1st heat exchanger 26 which is a "condenser", it vaporizes when heat-exchanging the air of the indoor space 1, and humidifies it while heating.
一方、本体7の周囲の断熱材38の断熱効果により、結露と性能ダウンを防止している。   On the other hand, the heat insulating effect of the heat insulating material 38 around the main body 7 prevents condensation and performance degradation.
こうして、圧縮機40を適当な周波数で運転することにより、冷媒が第一熱交換器26、第二熱交換器29に循環し、風路切替調整手段31を「暖房・冷房位置」に保持し、排気ファン14と給気ファン17を「強ノッチ」で運転することにより大風量の空気が暖められ、室内空間1を暖房する「暖房運転」が行われることになる。   Thus, by operating the compressor 40 at an appropriate frequency, the refrigerant circulates to the first heat exchanger 26 and the second heat exchanger 29, and the air path switching adjusting means 31 is held at the “heating / cooling position”. By operating the exhaust fan 14 and the air supply fan 17 with a “strong notch”, a large amount of air is warmed and a “heating operation” for heating the indoor space 1 is performed.
さらに、ユーザーの好みに応じて補助ヒーター27の運転/停止の切り換えを可能にしている。例えば、ユーザーがドラフト感を感じて給気ファン17の風量を減らすように設定した場合、ドラフト感は減少するが第一熱交換器26に供給される風量の減少に従い冷媒の放熱量も減少し、室内空間1の温度が低下して快適感が損なわれてしまう。このような場合に補助ヒーター27を運転すると、第一熱交換器26を通過した空気が更に補助ヒーター27で加熱されて高温となり室内空間1に供給されるので温度低下が抑制される。   Furthermore, it is possible to switch the operation / stop of the auxiliary heater 27 according to the user's preference. For example, when the user feels a draft feeling and sets the air volume of the air supply fan 17 to be reduced, the draft feeling is reduced, but the heat release amount of the refrigerant is also reduced as the air volume supplied to the first heat exchanger 26 is reduced. As a result, the temperature of the indoor space 1 is lowered and the feeling of comfort is impaired. When the auxiliary heater 27 is operated in such a case, the air that has passed through the first heat exchanger 26 is further heated by the auxiliary heater 27 to become a high temperature and is supplied to the indoor space 1, so that a temperature drop is suppressed.
また、冬場の外気温が非常に低い条件では、排気ファン14により第二熱交換器29に供給される室外空気の温度も低くなるため、上述した「暖房運転」実行中に第二熱交換器29に霜が付着する着霜現象が生じる。この着霜状態を放置しておくと第二熱交換器29における吸熱能力の低下に伴い、第一熱交換器26の放熱量が減少して室内空間1が十分に暖房できないという問題が発生する。このような問題を抑制するため、「暖房運転」中に第二熱交換器29の冷媒配管の温度をコイル温センサー52で監視し、その温度が所定値以下に低下した段階で第二熱交換器29に付着した霜を除去する「除霜運転1」を実行する必要がある。その「除霜運転1」時の運転動作について次に説明する。   In addition, when the outdoor temperature in winter is very low, the temperature of the outdoor air supplied to the second heat exchanger 29 by the exhaust fan 14 is also low, so the second heat exchanger is being executed during the above-described “heating operation”. A frosting phenomenon in which frost adheres to 29 occurs. If this frosting state is left as it is, the amount of heat released from the first heat exchanger 26 decreases due to a decrease in the heat absorption capability of the second heat exchanger 29, and the indoor space 1 cannot be sufficiently heated. . In order to suppress such a problem, the temperature of the refrigerant pipe of the second heat exchanger 29 is monitored by the coil temperature sensor 52 during the “heating operation”, and the second heat exchange is performed when the temperature falls below a predetermined value. It is necessary to execute “defrosting operation 1” for removing frost adhering to the container 29. Next, the operation during the “defrosting operation 1” will be described.
暖房運転中の除霜運転を実行する場合は、「強ノッチ」で運転していた排気ファン14および「所定ノッチ」で運転していた給気ファン17を各々停止し、「暖房」に設定されていた流路切替弁42を「冷房」に切り換える。このような設定を行うことにより、圧縮機40で圧縮された高温高圧の冷媒が冷房に切り換えられた流路切替弁42を通り、第二熱交換器29に導かれる。この高温冷媒が第二熱交換器29の冷媒配管を流れることにより配管温度が上昇し表面に付着した霜が溶解する。溶解した霜はドレン水となって大型ドレン装置35に滴下し、ドレンポンプ36、ドレン配管37を通じて室外や排水マス等に排水される。一方、第二熱交換器29で放熱して霜を溶かした冷媒は、膨張機構41、第一熱交換器26、流路切換弁42を順に流れて圧縮機40に戻り冷媒回路39を循環する。この「除霜運転1」を継続すると第二熱交換器29に付着した霜が溶けきり配管温度が上昇していく。この配管温度をコイル温センサー52で継続的に監視し、配管温度が所定値以上に上昇した段階で「除霜運転1」から再び「暖房運転」に切り換える。そして、停止していた排気ファン14を「強ノッチ」で運転開始し、第一熱交換器26の液側配管に設けられたコイル温センサー51にて冷媒の温度を監視し、ある温度以上になれば、給気ファン17も「所定ノッチ」で運転開始する。これにより低温時の極端な加熱能力低下を抑制して十分な暖房を行うことが可能になる。   When performing the defrosting operation during the heating operation, the exhaust fan 14 that has been operated with the “strong notch” and the air supply fan 17 that has been operated with the “predetermined notch” are respectively stopped and set to “heating”. The flow path switching valve 42 that has been switched is switched to “cooling”. By performing such setting, the high-temperature and high-pressure refrigerant compressed by the compressor 40 is guided to the second heat exchanger 29 through the flow path switching valve 42 switched to cooling. When this high-temperature refrigerant flows through the refrigerant pipe of the second heat exchanger 29, the pipe temperature rises and frost adhering to the surface is dissolved. The melted frost is drained and dripped into the large drain device 35 and drained to the outside or a drainage mass through the drain pump 36 and the drain pipe 37. On the other hand, the refrigerant that dissipates heat in the second heat exchanger 29 and melts the frost flows in order through the expansion mechanism 41, the first heat exchanger 26, and the flow path switching valve 42, returns to the compressor 40, and circulates through the refrigerant circuit 39. . If this “defrosting operation 1” is continued, the frost adhering to the second heat exchanger 29 is melted and the piping temperature rises. The pipe temperature is continuously monitored by the coil temperature sensor 52, and when the pipe temperature rises to a predetermined value or more, the “defrosting operation 1” is switched to the “heating operation” again. Then, the exhaust fan 14 that has been stopped is started to operate with a “strong notch”, and the temperature of the refrigerant is monitored by the coil temperature sensor 51 provided in the liquid side piping of the first heat exchanger 26, so that the temperature exceeds a certain temperature. If this happens, the air supply fan 17 also starts operation at the “predetermined notch”. Thereby, it becomes possible to perform sufficient heating while suppressing an extreme decrease in heating capacity at low temperatures.
室外の温度が極端に低い場合や室内空間1の温度が低い時に除霜の必要性が発生した場合、「除霜運転1」のように、一旦暖房運転を停止して除霜運転に切り換えることにより霜を除去するような切換動作ではなく、暖房運転を継続しながら第二熱交換器29に付着した霜を除去する除霜運転が求められる。その「除霜運転2」の動作について次に説明する。   When the outdoor temperature is extremely low or the necessity of defrosting occurs when the temperature of the indoor space 1 is low, the heating operation is temporarily stopped and switched to the defrosting operation as in “defrosting operation 1”. Therefore, a defrosting operation for removing the frost attached to the second heat exchanger 29 while continuing the heating operation is required instead of the switching operation for removing the frost. Next, the operation of the “defrosting operation 2” will be described.
「除霜運転2」の動作は、排気ファン14、給気ファン17、圧縮機40、流路切替弁42、第2の開閉弁48などは全て暖房運転時の動作を継続し、開閉弁45および開閉弁46を「閉鎖状態」から「開放状態」に切替えるとともに、膨張機構41の電子式膨張弁を全閉状態に設定し、予熱ヒーター28および冷媒加熱手段47を各々運転させる。このような設定に切替えることにより、圧縮機40で圧縮された高温高圧の冷媒が暖房に設定されている流路切替弁42を通り、開閉弁45が開放状態に切り換えられているため、第一熱交換器26側とバイパス回路43側に分流する。第一熱交換器26側に分流した冷媒は、給気ファン17により供給された室内空間1の空気に対して放熱し、冷媒の放熱により加熱された空気は室内空間1を循環して暖房運転が継続される。一方、第一熱交換器26で供給空気に放熱した冷媒は膨張機構41である電子式膨張弁が全閉、バイパス回路44に介在した開閉弁46が開放状態に設定されているため、全てバイパス回路44に流れて冷媒加熱手段47に流入する。冷媒加熱手段47は、前述したように冷媒加熱ヒーター59あるいは冷媒−水熱交換器66が設けられており、この冷媒加熱手段47において冷媒は加熱されて吸熱動作が行われる。一方、圧縮機40から吐出してバイパス回路43側に分流した高温高圧冷媒は第二熱交換器29に流入する。第二熱交換器29には排気ファン14が強ノッチで運転しているため、給気口10および給気ダクト11を通じて室外の空気が供給される。この供給空気は第二熱交換器29の上流側に位置する予熱ヒーター28により加熱され高温となって第二熱交換器29に供給される。したがって第二熱交換器29においては、高温の冷媒が冷媒配管を流れるとともに霜が付着している表面には予熱ヒーター28で加熱された高温の空気が供給されるので、第二熱交換器29に付着した霜が速やかに除去されることになる。そして、第二熱交換器29で霜を溶かした冷媒は冷媒加熱手段47で加熱された冷媒と合流して流路切替弁42から圧縮機40に戻り、また第二熱交換器29に供給された空気は、付着した霜に熱を与えた後、排気ダクト9から室外に排出される。このようにして室内空間1の暖房運転を継続しつつ、第二熱交換器29の除霜が可能になる。そして第二熱交換器29の配管温度が所定値以上に上昇した段階をコイル温センサー52で監視し、ある温度以上になった時、すなわち霜の除去が完了した段階で再び通常の暖房運転に戻すことにより、ユーザーの快適感を損なわずに連続した暖房運転が可能となる。   In the operation of “defrosting operation 2”, the exhaust fan 14, the air supply fan 17, the compressor 40, the flow path switching valve 42, the second opening / closing valve 48 and the like all continue to operate during the heating operation. In addition, the on-off valve 46 is switched from the “closed state” to the “open state”, the electronic expansion valve of the expansion mechanism 41 is set to the fully closed state, and the preheating heater 28 and the refrigerant heating means 47 are operated. By switching to such a setting, the high-temperature and high-pressure refrigerant compressed by the compressor 40 passes through the flow path switching valve 42 set to heating, and the on-off valve 45 is switched to the open state. The current is diverted to the heat exchanger 26 side and the bypass circuit 43 side. The refrigerant diverted to the first heat exchanger 26 side radiates heat to the air in the indoor space 1 supplied by the air supply fan 17, and the air heated by the heat radiated from the refrigerant circulates in the indoor space 1 for heating operation. Will continue. On the other hand, the refrigerant that has radiated heat to the supply air in the first heat exchanger 26 is completely bypassed because the electronic expansion valve that is the expansion mechanism 41 is fully closed and the on-off valve 46 that is interposed in the bypass circuit 44 is open. It flows into the circuit 44 and flows into the refrigerant heating means 47. As described above, the refrigerant heating means 47 is provided with the refrigerant heating heater 59 or the refrigerant-water heat exchanger 66. In the refrigerant heating means 47, the refrigerant is heated and an endothermic operation is performed. On the other hand, the high-temperature and high-pressure refrigerant discharged from the compressor 40 and diverted to the bypass circuit 43 side flows into the second heat exchanger 29. Since the exhaust fan 14 is operated with a strong notch to the second heat exchanger 29, outdoor air is supplied through the air supply port 10 and the air supply duct 11. The supplied air is heated by the preheating heater 28 located on the upstream side of the second heat exchanger 29 and is supplied to the second heat exchanger 29 at a high temperature. Therefore, in the second heat exchanger 29, since the high-temperature refrigerant flows through the refrigerant pipe and the surface to which frost is attached is supplied with high-temperature air heated by the preheating heater 28, the second heat exchanger 29 The frost adhering to is quickly removed. The refrigerant that has melted frost in the second heat exchanger 29 merges with the refrigerant heated by the refrigerant heating means 47, returns from the flow path switching valve 42 to the compressor 40, and is supplied to the second heat exchanger 29. After giving heat to the attached frost, the air is discharged from the exhaust duct 9 to the outside of the room. In this way, it is possible to defrost the second heat exchanger 29 while continuing the heating operation of the indoor space 1. The stage where the pipe temperature of the second heat exchanger 29 has risen to a predetermined value or more is monitored by the coil temperature sensor 52. When the temperature rises above a certain temperature, that is, when the frost removal is completed, the normal heating operation is resumed. By returning, continuous heating operation is possible without impairing the user's comfort.
次に「冷房運転」時の運転動作について説明する。「冷房運転」は、夏季などの高温時にユーザが室内空間1の温度を下げて快適に過ごせるよう冷房する場合または、空調機18の冷房負荷を軽減する場合に選択される運転パターンである。この「冷房運転」を実行する場合は、風路切替調整手段31を排気風路20と給気風路23を室外からの給気が第一熱交換器26を通り、室内空間1の排気が第二熱交換器29を通るようにした「暖房・冷房位置」に設定し、排気ファン14を「強ノッチ」、給気ファン17も「強ノッチ」運転とする。   Next, the operation during “cooling operation” will be described. “Cooling operation” is an operation pattern that is selected when the user cools the indoor space 1 at a high temperature such as in summer so that the user can comfortably spend time or when the cooling load of the air conditioner 18 is reduced. When this “cooling operation” is executed, the air passage switching adjustment means 31 is supplied to the exhaust air passage 20 and the air supply air passage 23 from the outside through the first heat exchanger 26, and the exhaust in the indoor space 1 is the first exhaust air. The “heating / cooling position” is set so as to pass through the two heat exchangers 29, the exhaust fan 14 is set to “strong notch”, and the air supply fan 17 is also set to “strong notch” operation.
また、給気バイパス手段32、排気バイパス手段33、除湿切替手段34は全て「閉鎖」状態とし、補助ヒーター27、予熱ヒーター28は「停止」状態とし、給気開閉装置24、排気開閉装置30は全て「開放」状態に設定する。   In addition, the air supply bypass unit 32, the exhaust bypass unit 33, and the dehumidification switching unit 34 are all in a “closed” state, the auxiliary heater 27 and the preheat heater 28 are in a “stopped” state, and the air supply opening / closing device 24 and the exhaust opening / closing device 30 are Set all to “open” status.
冷媒回路39としては、圧縮機40を室内空間1や室外空気の温度により周波数を調整しながらで運転し、流路切替弁42を「冷房」状態に保持し、膨張機構41は冷凍サイクルが最適となるように都度「開度調整」する。第2の開閉弁48は「開放」状態としてキャピラリーチューブ49に冷媒は通らない。冷媒加熱手段47は「停止」状態とし、開閉弁45、開閉弁46は全て「閉鎖」状態とする。   As the refrigerant circuit 39, the compressor 40 is operated while adjusting the frequency according to the temperature of the indoor space 1 or the outdoor air, the flow path switching valve 42 is maintained in the “cooling” state, and the expansion mechanism 41 has an optimal refrigeration cycle. "Opening adjustment" is performed each time so that The second on-off valve 48 is in an “open” state, and no refrigerant passes through the capillary tube 49. The refrigerant heating means 47 is set to the “stopped” state, and the on-off valve 45 and the on-off valve 46 are all set to the “closed” state.
この状態において、給気ファン17が「強ノッチ」で運転することにより、室外の大風量の空気が給気口10から入り、給気ダクト11、本体7の給気接続部21、給気開閉装置24、屋外フィルター25、給気風路23を通って、「暖房・冷房位置」に設定された風路切替調整手段31により、流路切替弁42により「冷房」状態に保持されて、「凝縮器」となったフィン&チューブ型の第二熱交換器29で、圧縮機40により圧縮搬送された冷媒の熱を吸熱し、排気開閉装置30、排気接続部19、排気ダクト9、排気口8を通って室外に排気される。そして、排気ファン14が「強ノッチ」で運転することにより、室内空間1の大風量の空気が、廊下やドアのアンダーカットを通り、サニタリー空間6の空気と一緒に天井に設置されたグリル15の吸込み口16から排気風路20を通って、「暖房・冷房位置」に設定された風路切替調整手段31により、流路切替弁42により「蒸発器」となった第一熱交換器26で、冷媒に吸熱され冷やされた空気が、吹出し接続部22、吹出しダクト13を通って、吹出し口12からリビング2に吹出される。   In this state, when the air supply fan 17 operates with a “strong notch”, a large amount of outdoor air enters through the air supply port 10, and the air supply duct 11, the air supply connection portion 21 of the main body 7, and the air supply open / close The air passage switching adjusting means 31 set to the “heating / cooling position” passes through the device 24, the outdoor filter 25, and the air supply air passage 23, and is held in the “cooling” state by the flow passage switching valve 42. The fin and tube-type second heat exchanger 29 becomes a “heater” and absorbs the heat of the refrigerant compressed and conveyed by the compressor 40, and the exhaust opening / closing device 30, the exhaust connection portion 19, the exhaust duct 9, and the exhaust port 8. It is exhausted through the room. Then, when the exhaust fan 14 is operated with a “strong notch”, a large amount of air in the indoor space 1 passes through the undercut of the hallway and the door, and the grill 15 installed on the ceiling together with the air in the sanitary space 6. The first heat exchanger 26 that has become an “evaporator” by the flow path switching valve 42 by the air path switching adjusting means 31 set to the “heating / cooling position” through the exhaust air path 20 from the suction port 16. Thus, the air absorbed by the refrigerant and cooled is blown out from the outlet 12 to the living room 2 through the outlet connecting portion 22 and the outlet duct 13.
そして、冷媒は適当な周波数で運転する圧縮機40により、高い圧力、温度の気体となって吐出され、流路切替弁42を通って第二熱交換器29に入り、室外の大風量の空気に放熱して温度を下げて低温の液体となって、膨張機構41で減圧されて低圧低温の2相状態になり、第2の開閉弁48は「開放」状態のため第一熱交換器26全体で、室内空間1からの大風量の空気から吸熱して温度を上げて低圧低温の気体となって、流路切替弁42を通って再び圧縮機40に戻る。   The refrigerant is discharged as a gas having a high pressure and temperature by the compressor 40 operating at an appropriate frequency, enters the second heat exchanger 29 through the flow path switching valve 42, and has a large air volume outside. The heat is released to lower the temperature to become a low-temperature liquid, which is decompressed by the expansion mechanism 41 to a low-pressure low-temperature two-phase state, and the second on-off valve 48 is in the “open” state, so the first heat exchanger 26 As a whole, heat is absorbed from a large amount of air from the indoor space 1 to increase the temperature to become a low-pressure and low-temperature gas, and return to the compressor 40 again through the flow path switching valve 42.
「蒸発器」である第一熱交換器26のフィンには室内空間1の湿気が凝縮して結露水となって大型ドレン装置35に流れ落ち、溜まった結露水をドレンポンプ36の運転によりドレン配管37から室外や排水マス等へ排水するまたは、「凝縮器」である第二熱交換器29に吹きかけ、室外の空気を熱交換する時に気化させて排気する。   The moisture of the indoor space 1 condenses on the fins of the first heat exchanger 26 that is an “evaporator” and flows into the large drain device 35 as condensed water, and the accumulated condensed water is drained by the operation of the drain pump 36. It drains from 37 to the outdoor, a drainage mass, etc., or it sprays on the 2nd heat exchanger 29 which is a "condenser", and it vaporizes and exhausts when the outdoor air is heat-exchanged.
一方、本体7の周囲の断熱材38の断熱効果により、結露と性能ダウンを防止している。   On the other hand, the heat insulating effect of the heat insulating material 38 around the main body 7 prevents condensation and performance degradation.
こうして、圧縮機40を適当な周波数で運転することにより、冷媒が第二熱交換器29、第一熱交換器26に循環し、風路切替調整手段31を「暖房・冷房位置」に保持し、排気ファン14と給気ファン17を「強ノッチ」で運転することにより大風量の空気が冷やされ、室内空間1を冷房する「冷房運転」が行われることになる。   Thus, by operating the compressor 40 at an appropriate frequency, the refrigerant circulates in the second heat exchanger 29 and the first heat exchanger 26, and the air path switching adjusting means 31 is held at the “heating / cooling position”. By operating the exhaust fan 14 and the air supply fan 17 with a “strong notch”, a large amount of air is cooled, and a “cooling operation” for cooling the indoor space 1 is performed.
次に「除湿ぎみ熱交換気運転」時の運転動作について説明する。「除湿ぎみ熱交換気運転」は、サニタリー空間6の臭いや湿気を急速に排気しながら、室外の新鮮な空気を室内空間1に給気する時に空調機18などで空調された空気の熱を排気時に冷媒に回収して、室外から給気される空気に冷媒によって熱を加えて給気しながら、梅雨時期の高湿時や家事などによる生活発湿に対する快適性向上や壁面などのカビ抑制のため、室内空間1を再熱除湿する運転パターンである。   Next, the operation during the “dehumidification heat exchange air operation” will be described. The “dehumidification heat exchange air operation” is a method of rapidly exhausting the odor and moisture of the sanitary space 6 while the fresh air outside is being supplied to the indoor space 1 to heat the air conditioned by the air conditioner 18 or the like. While recovering into the refrigerant during exhaust and adding heat to the air supplied from the outside with the refrigerant, the air is supplied to improve comfort in daily humidity during the rainy season and housework, and to suppress mold on the walls, etc. Therefore, this is an operation pattern in which the indoor space 1 is reheated and dehumidified.
この運転時は、風路切替調整手段31を排気風路20と給気風路23を室外からの給気が第一熱交換器26を通り、室内空間1の排気が第二熱交換器29を通るようにした「暖房・冷房位置」と排気風路20と給気風路23を確保した「給気排気位置」(図示の状態)の間で「開度調整」をしながら、排気ファン14を「強ノッチ」、給気ファン17も「強ノッチ」運転して、第一熱交換器26と第二熱交換器29を各々通過する室外空気風量と室内空間1の空気の風量を調整する。   During this operation, the air passage switching adjustment means 31 is supplied to the exhaust air passage 20 and the supply air passage 23 from the outside through the first heat exchanger 26, and the exhaust in the indoor space 1 passes through the second heat exchanger 29. While adjusting the opening degree between the “heating / cooling position” and the “supply / exhaust position” (state shown) in which the exhaust air passage 20 and the supply air passage 23 are secured, the exhaust fan 14 is The “strong notch” and the air supply fan 17 are also operated in “strong notch” to adjust the outdoor air flow rate and the air flow rate of the indoor space 1 passing through the first heat exchanger 26 and the second heat exchanger 29, respectively.
また、給気バイパス手段32、排気バイパス手段33、除湿切替手段34は全て「閉鎖」状態とし、補助ヒーター27、予熱ヒーター28は「停止」状態とし、給気開閉装置24、排気開閉装置30は全て「開放」状態に設定する。   In addition, the air supply bypass unit 32, the exhaust bypass unit 33, and the dehumidification switching unit 34 are all in a “closed” state, the auxiliary heater 27 and the preheat heater 28 are in a “stopped” state, and the air supply opening / closing device 24 and the exhaust opening / closing device 30 are Set all to “open” status.
冷媒回路39としては、圧縮機40を室内空間1や室外空気の温湿度により周波数を調整しながらで運転し、流路切替弁42を「暖房」状態に保持し、膨張機構41は「全開」とする。第2の開閉弁48は「閉鎖」状態としてキャピラリーチューブ49に冷媒を通して減圧させ、第一熱交換器26のキャピラリーチューブ49より上流側を「凝縮器」として、下流側を「蒸発器」として使う。冷媒加熱手段47は「停止」状態とし、開閉弁45、開閉弁46は全て「閉鎖」状態とする。   As the refrigerant circuit 39, the compressor 40 is operated while adjusting the frequency according to the temperature and humidity of the indoor space 1 and outdoor air, the flow path switching valve 42 is kept in the “heating” state, and the expansion mechanism 41 is “fully open”. And The second on-off valve 48 is in a “closed” state to reduce the pressure through the refrigerant through the capillary tube 49, and use the upstream side of the capillary tube 49 of the first heat exchanger 26 as a “condenser” and the downstream side as an “evaporator”. . The refrigerant heating means 47 is set to the “stopped” state, and the on-off valve 45 and the on-off valve 46 are all set to the “closed” state.
この状態において、給気ファン17が「強ノッチ」で運転することにより、室内空間1の大風量の空気が、廊下やドアのアンダーカットを通り、サニタリー空間6の空気と一緒に天井に設置されたグリル15の吸込み口16から排気風路20を通って、また、室外の大風量の空気が、給気ダクト11を通って、「開度調整」に設定された風路切替調整手段31によって各々の風量が調整されて合流し、流路切替弁42により「暖房」設定され、「蒸発器」となったフィン&チューブ型の第一熱交換器26のキャピラリーチューブ49より下流側部分で除湿され、「凝縮器」となった第一熱交換器26のキャピラリーチューブ49より上流側部分で再熱され、吹出し接続部22、吹出しダクト13を通って、吹出し口12からリビング2に吹出される。   In this state, when the air supply fan 17 operates in a “strong notch”, a large amount of air in the indoor space 1 passes through the undercuts of the hallways and doors and is installed on the ceiling together with the air in the sanitary space 6. A large amount of outdoor air passes from the suction port 16 of the grill 15 through the exhaust air passage 20 and passes through the air supply duct 11 by the air passage switching adjustment means 31 set to “opening adjustment”. Each air volume is adjusted and merged, set to “heating” by the flow path switching valve 42, and dehumidified in the downstream portion of the capillary tube 49 of the fin-and-tube type first heat exchanger 26 that has become an “evaporator”. Then, it is reheated at a portion upstream of the capillary tube 49 of the first heat exchanger 26 that has become a “condenser”, and blows out from the outlet 12 to the living room 2 through the outlet connection portion 22 and the outlet duct 13. It is.
そして、排気ファン14が「強ノッチ」で運転することにより、室外の大風量の空気が給気口10から入り、給気ダクト11、本体7の給気接続部21、給気開閉装置24、屋外フィルター25、給気風路23を通って、また、室内空間1の大風量の空気が、グリル15の吸込み口16から排気風路20を通って、「開度調整」に設定された風路切替調整手段31によって各々の風量が調整されて合流し、流路切替弁42により「暖房」状態に保持されて「蒸発器」となった第二熱交換器29において冷媒に吸熱され、排気開閉装置30、排気接続部19、排気ダクト9、排気口8を通って室外に排気される。   Then, when the exhaust fan 14 operates with a “strong notch”, a large amount of outdoor air enters from the air supply port 10, and the air supply duct 11, the air supply connection portion 21 of the main body 7, the air supply opening / closing device 24, An air passage set to “opening adjustment” through the outdoor filter 25 and the air supply air passage 23, and a large amount of air in the indoor space 1 through the exhaust air passage 20 from the suction port 16 of the grill 15. Each air volume is adjusted by the switching adjustment means 31 and merged, and the refrigerant is absorbed by the refrigerant in the second heat exchanger 29 which is held in the “heating” state by the flow path switching valve 42 and becomes an “evaporator”, and opens and closes the exhaust. The air is exhausted outside the room through the device 30, the exhaust connection part 19, the exhaust duct 9 and the exhaust port 8.
冷媒は適当な周波数で運転する圧縮機40により、高い圧力、温度の気体となって吐出され、流路切替弁42を通って第一熱交換器26に入り、第2の開閉弁48は「閉鎖」状態のため第一熱交換器26のキャピラリーチューブ49の上流部分で、室内空間1及び室外からの大風量の空気に放熱して温度を下げて中低温の2相状態となって、キャピラリーチューブ49で減圧されて中低圧中低温の2相状態になり、第一熱交換器26のキャピラリーチューブ49の下流部分で同じ空気から今度は少し吸熱して中低圧中低温の2相状態となり、減圧機構41は「全開」のため、少し減圧されて「蒸発器」である第二熱交換器29に入り、室外及び室内空間1からの大風量の空気からさらに吸熱して低圧低温の気体になって再び圧縮機40に戻る。   The refrigerant is discharged as a gas having a high pressure and temperature by the compressor 40 operating at an appropriate frequency, enters the first heat exchanger 26 through the flow path switching valve 42, and the second on-off valve 48 is “ In the upstream portion of the capillary tube 49 of the first heat exchanger 26 because of the “closed” state, heat is released to the large volume of air from the indoor space 1 and the outside, and the temperature is lowered to a medium-low temperature two-phase state. The pressure is reduced in the tube 49 to become a two-phase state of medium to low pressure and medium to low temperature, and in the downstream portion of the capillary tube 49 of the first heat exchanger 26, the same air absorbs a little heat and becomes a two-phase state of medium to low pressure to medium and low temperature. Since the decompression mechanism 41 is “fully open”, the decompression mechanism 41 is slightly decompressed and enters the second heat exchanger 29, which is an “evaporator”, and further absorbs heat from a large amount of air from the outdoor and indoor space 1 to form a low-pressure, low-temperature gas. And return to the compressor 40 again
「蒸発器」である第一熱交換器26のキャピラリーチューブ49より下流部分と第二熱交換器29のフィンには室内空間1と室外の湿気が凝縮して結露水となって大型ドレン装置35に流れ落ち、溜まった結露水をドレンポンプ36の運転によりドレン配管37から室外や排水マス等へ排水する。   A large drain device 35 is formed by condensing the indoor space 1 and the outdoor moisture into the dew condensation water on the downstream portion of the capillary tube 49 of the first heat exchanger 26 that is an “evaporator” and the fins of the second heat exchanger 29. Condensed water that has flowed down and accumulated is drained from the drain pipe 37 to the outside, to a drainage mass or the like by the operation of the drain pump 36.
一方、本体7の周囲の断熱材38の断熱効果により、結露と性能ダウンを防止している。   On the other hand, the heat insulating effect of the heat insulating material 38 around the main body 7 prevents condensation and performance degradation.
こうして、圧縮機40を適当な周波数で運転することにより、冷媒が第一熱交換器26のキャピラリーチューブ49より上流部分とキャピラリーチューブ49、このキャピラリーチューブ49より下流部分、第二熱交換器29に循環し、風路切替調整手段31を「開度調整」に保持し、排気ファン14と給気ファン17を「強ノッチ」で運転することにより、室内空間1の熱を回収して再熱除湿し、サニタリー空間6の排気と室外の給気を行う「除湿ぎみ熱交換気運転」が行われることになる。   Thus, by operating the compressor 40 at an appropriate frequency, the refrigerant flows into the upstream portion of the first heat exchanger 26 from the capillary tube 49 and the capillary tube 49, the downstream portion from the capillary tube 49, and the second heat exchanger 29. It circulates, keeps the air path switching adjusting means 31 at “opening degree adjustment”, and operates the exhaust fan 14 and the air supply fan 17 with “strong notch”, thereby recovering the heat of the indoor space 1 and reheat dehumidification. Then, the “dehumidifying heat exchange operation” for exhausting the sanitary space 6 and supplying the outdoor air is performed.
次に「暖房ぎみ熱交換気運転」時の運転動作について説明する。「暖房ぎみ熱交換気運転」は、サニタリー空間6の臭いや湿気を急速に排気しながら、室外の新鮮な空気を室内空間1に給気する時に空調機18などで空調された空気の熱を排気時に冷媒に回収して、室外から給気される空気に冷媒によって熱を加えて給気しながら、冬季に快適性向上を図るもしくは、空調機18の暖房負荷を軽減するため、室内空間1を暖房する運転パターンである。   Next, the operation operation at the time of “heating heat exchange air operation” will be described. “Heating heat exchange air operation” is a method of rapidly exhausting the odors and moisture of the sanitary space 6 while supplying fresh outdoor air to the indoor space 1 to heat the air conditioned by the air conditioner 18 or the like. In order to improve comfort in winter or to reduce the heating load of the air conditioner 18 while collecting air in the refrigerant during exhaust and adding heat to the air supplied from the outside by the refrigerant, the indoor space 1 It is the driving pattern which heats.
この運転時は、風路切替調整手段31を排気風路20と給気風路23を室外からの給気が第一熱交換器26を通り、室内空間1の排気が第二熱交換器29を通るようにした「暖房・冷房位置」と排気風路20と給気風路23を確保した「給気排気位置」(図示の状態)の間で「開度調整」をしながら、排気ファン14を「強ノッチ」、給気ファン17も「強ノッチ」運転して、第一熱交交換器26と第二熱交換器29を各々通過する室外空気風量と室内空間1の空気の風量を調整する以外は「暖房運転」の運転パターンと同じである。   During this operation, the air passage switching adjustment means 31 is supplied to the exhaust air passage 20 and the supply air passage 23 from the outside through the first heat exchanger 26, and the exhaust in the indoor space 1 passes through the second heat exchanger 29. While adjusting the opening degree between the “heating / cooling position” and the “supply / exhaust position” (state shown) in which the exhaust air passage 20 and the supply air passage 23 are secured, the exhaust fan 14 is The “strong notch” and the air supply fan 17 are also operated in the “strong notch” operation to adjust the outdoor air volume passing through the first heat exchanger 26 and the second heat exchanger 29 and the air volume in the indoor space 1 respectively. Except for this, the operation pattern is the same as that of the “heating operation”.
次に「冷房ぎみ熱交換気運転」時の運転動作について説明する。「冷房ぎみ熱交換気運転」は、サニタリー空間6の臭いや湿気を急速に排気しながら、室外の新鮮な空気を室内空間1に給気する時に空調機18などで空調された空気の熱を排気時に冷媒に回収して、室外から給気される空気に冷媒によって吸熱して給気しながら、夏季に快適性向上を図るもしくは、空調機18の冷房負荷を軽減するため、室内空間1を冷房する運転パターンである。   Next, the operation during the “cooling heat exchange operation” will be described. “Cooling heat exchanging air operation” is a method in which the odor and moisture of the sanitary space 6 are rapidly exhausted and the air conditioned by the air conditioner 18 or the like is supplied when fresh outdoor air is supplied to the indoor space 1. In order to improve the comfort in summer or to reduce the cooling load of the air conditioner 18 while collecting the refrigerant in the refrigerant at the time of exhaust and absorbing the air supplied from the outside with the refrigerant to supply air, This is an operation pattern for cooling.
この運転時は、風路切替調整手段31を排気風路20と給気風路23を室外からの給気が第一熱交換器26を通り、室内空間1の排気が第二熱交換器29を通るようにした「暖房・冷房位置」と排気風路20と給気風路23を確保した「給気排気位置」(図示の状態)の間で「開度調整」をしながら、排気ファン14を「強ノッチ」、給気ファン17も「強ノッチ」運転して、第一熱交換器26と第二熱交換器29を各々通過する室外空気風量と室内空間1の空気の風量を調整する以外は「冷房運転」の運転パターンと同じである。   During this operation, the air passage switching adjustment means 31 is supplied to the exhaust air passage 20 and the supply air passage 23 from the outside through the first heat exchanger 26, and the exhaust in the indoor space 1 passes through the second heat exchanger 29. While adjusting the opening degree between the “heating / cooling position” and the “supply / exhaust position” (state shown) in which the exhaust air passage 20 and the supply air passage 23 are secured, the exhaust fan 14 is The “strong notch” and the air supply fan 17 are also operated in the “strong notch” operation to adjust the outdoor air volume passing through the first heat exchanger 26 and the second heat exchanger 29 and the air volume in the indoor space 1, respectively. Is the same as the operation pattern of “cooling operation”.
以上、説明した構成および動作により、本実施形態の換気空調装置は、以下の効果を奏するものである。   With the configuration and operation described above, the ventilation air conditioner of the present embodiment has the following effects.
第一熱交換器26と第二熱交換器29の間で冷媒により熱を移動させ、浴室3の空気を排気ファン14で排気しながら、室外の空気を暖めまたは冷やして室内空間1に給気ファン17で給気することにより、室内空間1に空調しない室外の空気が流入せず、快適性が向上し、自然給気口付近の結露によるカビの発生や室外空気の粉塵などによる壁面の汚れなどを防止できる。さらに熱交換器での空気と冷媒との熱交換により、空調機18のランニングコストも含めたトータルの省エネ化を図れ、熱交換器の圧力損失が少ないことにより、換気風量を増やすことができる。   Heat is transferred by the refrigerant between the first heat exchanger 26 and the second heat exchanger 29, and the air in the bathroom 3 is exhausted by the exhaust fan 14, while the outdoor air is warmed or cooled to supply air to the indoor space 1. By supplying air with the fan 17, outdoor air that is not air-conditioned does not flow into the indoor space 1, improving comfort, generating mold due to condensation near the natural air inlet, and dirt on the wall surface due to dust from outdoor air, etc. Can be prevented. Further, the heat exchange between the air and the refrigerant in the heat exchanger can achieve a total energy saving including the running cost of the air conditioner 18, and the ventilation air volume can be increased by reducing the pressure loss of the heat exchanger.
また、第一熱交換器26と第二熱交換器29を通過する室外空気とサニタリー空気の量を風路切替調整手段31にて、それぞれ調整して、室内、室外の温湿度、室内の空気の汚れ具合等の環境条件により、循環空気、排気、給気の量のバランスを調整することにより、サニタリー空間6を換気しながら室内空間1へ給気でき、省エネで空調できる。   Further, the amounts of outdoor air and sanitary air passing through the first heat exchanger 26 and the second heat exchanger 29 are adjusted by the air path switching adjusting unit 31 to adjust the indoor and outdoor temperatures and humidity, and the indoor air. By adjusting the balance of the amount of circulating air, exhaust, and supply air according to environmental conditions such as the degree of dirt, the air can be supplied to the indoor space 1 while ventilating the sanitary space 6, and air conditioning can be performed with energy saving.
また、換気時に第一熱交換器26と第二熱交換器29の給気バイパス手段32と排気バイパス手段33を開放状態にし、室外空気とサニタリー空気の一部を第一熱交換器26と第二熱交換器29を通さずに室内空間1と室外に給気、排気することにより、同じ給気・排気風量でも、より低電力で室内空間1への給気とサニタリー空間6の排気をすることができる。   Further, during ventilation, the air supply bypass means 32 and the exhaust bypass means 33 of the first heat exchanger 26 and the second heat exchanger 29 are opened, and part of the outdoor air and sanitary air is transferred to the first heat exchanger 26 and the second heat exchanger 29. By supplying and exhausting the indoor space 1 and the outside without passing through the two heat exchangers 29, the supply of air to the indoor space 1 and the exhaust of the sanitary space 6 are performed with lower power even with the same air supply / exhaust air volume. be able to.
また、サニタリー空間6から吸い込んだ空気が第二熱交換器29で冷却された後、第一熱交換器26で再熱されて、室内空間1に吹出すように風路を切替えることにより、室外への熱の流出を減らしながら、室内空間1の温度変化を軽減しながら、除湿することができる。   Further, after the air sucked from the sanitary space 6 is cooled by the second heat exchanger 29, the air is reheated by the first heat exchanger 26, and the air path is switched so as to blow out into the indoor space 1. It is possible to dehumidify while reducing the temperature change of the indoor space 1 while reducing the outflow of heat to the interior.
また、流路切替弁42で冷媒の流れ方向を切替えることにより、室内空間1の暖房運転と冷房運転を切替えることができる。   Further, the heating operation and the cooling operation of the indoor space 1 can be switched by switching the flow direction of the refrigerant with the flow path switching valve 42.
また、室外から吸い込んだ空気が第一熱交換器26の減圧手段50の下流側で冷却された後、減圧手段50の上流側で再熱されて、室内空間1に吹出すようにすることにより、室外の新鮮な空気を室内空間1に導入しながら、室内空間1の温度を下げすぎないで除湿することができる。   Further, after the air sucked from the outside is cooled on the downstream side of the decompression means 50 of the first heat exchanger 26, it is reheated on the upstream side of the decompression means 50 and blown out into the indoor space 1. While fresh outdoor air is introduced into the indoor space 1, it can be dehumidified without excessively reducing the temperature of the indoor space 1.
また、室内空間1の空調を行う場合は、サニタリー空間6の換気する場合に対し、給気ファン17または排気ファン14の風量を増加させることにより、熱回収する能力を増やして、より省電力で、換気・空調をすることができる。   Further, when air-conditioning the indoor space 1, the capacity of heat recovery can be increased by increasing the air volume of the air supply fan 17 or the exhaust fan 14 compared with the case where the sanitary space 6 is ventilated. Can be ventilated and air conditioned.
また、サニタリー空間6以外に設置された空調機18によって空調された空気がサニタリー空間6の吸込み口16から入り、その空気の熱回収をするため、本換気空調装置より効率がよい空調機18の吹出し空気の熱を利用することから、本体7内の熱交換器の小型化と空調運転時の省エネ化を図ることができる。   In addition, since air conditioned by the air conditioner 18 installed outside the sanitary space 6 enters through the suction port 16 of the sanitary space 6 and recovers heat of the air, the air conditioner 18 is more efficient than the present ventilation air conditioner 18. Since the heat of the blown air is used, it is possible to reduce the size of the heat exchanger in the main body 7 and save energy during the air conditioning operation.
また、給気風路23と排気風路20の下部に配置された大型ドレン装置35により、風路で発生した結露水の処理が確実に行え、熱交換器の凝縮水の排水口が1箇所となって施工性を向上でき、水量が増えることにより排水口への流れもスムーズとなって、滞留水による菌の発生も防止できる。   In addition, the large drain device 35 disposed below the supply air passage 23 and the exhaust air passage 20 can surely treat the condensed water generated in the air passage, and the heat exchanger has a single condensate drain. Therefore, the workability can be improved, and the flow of water to the drain outlet can be smoothed by increasing the amount of water, thereby preventing the generation of bacteria due to the accumulated water.
また、ドレンポンプ36を運転することにより、凝縮水または結露水を大型ドレン装置35より高いところに排水でき、天井裏のスペースが狭く、ドレン勾配がとれない場合にも施工できる。   Further, by operating the drain pump 36, condensed water or condensed water can be drained to a place higher than the large drain device 35, and the construction can be performed even when the space behind the ceiling is narrow and the drain gradient cannot be taken.
また、給気風路23と排気風路20の周囲を断熱材38で断熱処理することにより、換気空調装置の本体7外郭への結露を防止しながら、熱の漏洩を防止して、より省エネ性を向上できる。   Further, by heat-insulating the periphery of the supply air passage 23 and the exhaust air passage 20 with a heat insulating material 38, heat leakage is prevented while preventing condensation on the outer body 7 of the ventilation air conditioner, thereby further saving energy. Can be improved.
また、浴室3の天井裏などに設置した換気空調装置の本体7の内部に冷媒回路39を構成する圧縮機40、第一熱交換器26、膨張機構41、第二熱交換器29を全て収納することにより、省スペース化や施工性の向上を図ることができる。   Further, the compressor 40, the first heat exchanger 26, the expansion mechanism 41, and the second heat exchanger 29 constituting the refrigerant circuit 39 are all housed inside the main body 7 of the ventilation air conditioner installed in the ceiling of the bathroom 3 or the like. By doing so, it is possible to save space and improve workability.
また、補助ヒーター27で給気ファン17が送風する空気の少なくとも一部を加熱することにより、低温環境における暖房能力不足を補填することができる。   Further, by heating at least a part of the air blown by the air supply fan 17 by the auxiliary heater 27, it is possible to compensate for the lack of heating capacity in a low temperature environment.
また、予熱ヒーター28で第二熱交換器29に供給される前の空気を予熱することにより、低温環境における暖房能力の低下や第二熱交換器29への着霜の抑制することができ、また、付着した霜の除去を行うことができる。   Moreover, by preheating the air before being supplied to the second heat exchanger 29 by the preheating heater 28, it is possible to suppress a reduction in heating capacity in a low temperature environment and frost formation on the second heat exchanger 29, Moreover, the attached frost can be removed.
また、低温時に第一熱交換器26もしくは第二熱交換器29に霜が付着した場合にコイル温センサー51、52で監視する冷媒温度に基づいて流路切替弁42を切替えることにより、付着した霜の除去を行うことができる。   In addition, when frost adheres to the first heat exchanger 26 or the second heat exchanger 29 at a low temperature, it adheres by switching the flow path switching valve 42 based on the refrigerant temperature monitored by the coil temperature sensors 51 and 52. Defrosting can be performed.
また、低温時に第二熱交換器29に霜が付着した場合に冷媒回路39の高圧側と低圧側をバイパス回路43、44を通じて開放し、高温の冷媒を第二熱交換器29に流通させる若しくは第二熱交換器29内の冷媒圧力を上昇させることにより、付着した霜の除去を行うことができる。   Further, when frost adheres to the second heat exchanger 29 at a low temperature, the high-pressure side and the low-pressure side of the refrigerant circuit 39 are opened through the bypass circuits 43 and 44, and the high-temperature refrigerant is circulated to the second heat exchanger 29. By increasing the refrigerant pressure in the second heat exchanger 29, the attached frost can be removed.
また、冷媒加熱手段47を第二熱交換器29と直列もしくは並列となるように冷媒回路39中に介在させ、第二熱交換器29に霜が付着するなど吸熱能力が低下した場合において、冷媒加熱手段47を作動させることにより、吸熱能力を確保して暖房能力を維持することができる。   Further, the refrigerant heating means 47 is interposed in the refrigerant circuit 39 so as to be in series or in parallel with the second heat exchanger 29, and when the heat absorption capability is reduced, for example, frost adheres to the second heat exchanger 29, the refrigerant By operating the heating means 47, heat absorption capability can be ensured and heating capability can be maintained.
また、冷媒加熱手段47に、電熱によって冷媒を加熱する冷媒加熱ヒーター59を用いることにより、冷媒加熱手段47の小型化を図ることができる。   Further, by using a refrigerant heater 59 that heats the refrigerant by electric heat as the refrigerant heating means 47, the refrigerant heating means 47 can be downsized.
また、冷媒加熱手段47に、給湯機67の給湯水との熱交換によって冷媒を加熱する冷媒−水熱交換器66を用いることにより、冷媒加熱手段47での電力使用量を削減することができる。   Further, by using the refrigerant-water heat exchanger 66 that heats the refrigerant by exchanging heat with the hot water of the hot water supply 67 for the refrigerant heating means 47, the amount of power used in the refrigerant heating means 47 can be reduced. .
また、冷媒−水熱交換器66に供給する給湯水に、ヒートポンプ式給湯機で沸かされた湯を用いることにより、冷媒加熱手段47の電力使用量を更に削減することができる。   Moreover, the amount of electric power used by the refrigerant heating means 47 can be further reduced by using hot water boiled by a heat pump type hot water heater as hot water supplied to the refrigerant-water heat exchanger 66.
また、冷媒−水熱交換器66で冷媒との熱交換をした後の給湯水を排水する場合に、第一熱交換器26あるいは第二熱交換器29に生じた結露水を排水する排水経路を利用することにより、排水経路数を増やさずに施工を簡略化することができる。   Moreover, when draining the hot water after heat-exchange with a refrigerant | coolant with the refrigerant | coolant-water heat exchanger 66, the drainage path which drains the dew condensation water produced in the 1st heat exchanger 26 or the 2nd heat exchanger 29 By using, construction can be simplified without increasing the number of drainage paths.
また、夏場などの高温時に放熱能力が不足した場合に冷媒−水熱交換器66に供給される常温水に対して冷媒が放熱するように構成することにより、放熱不足を解消して冷房能力を維持することができる。   In addition, when the heat dissipating capacity is insufficient at high temperatures such as in summer, the refrigerant dissipates heat to room temperature water supplied to the refrigerant-water heat exchanger 66, thereby eliminating the heat dissipating shortage and improving the cooling capacity. Can be maintained.
以上説明した内容は、発明を実施するための一形態についてのみ説明したものであり、本発明は上記実施の形態に限定されるものではない。   The contents described above are only described for one mode for carrying out the invention, and the present invention is not limited to the above embodiment.
例えば、上記実施の形態では、給気と空調する室内空間1をリビング2とし、排気口を開口したサニタリー空間6を浴室3としたが、給気や空調する空間および排気口を開口する空間は、室内空間1内において区画された空間であれば良く、上記に限定されるものではない。即ち、給気と空調する空間を廊下とし、排気口を開口する空間を洗面所4に設定しても良い。   For example, in the above embodiment, the indoor space 1 for supplying and air-conditioning is the living room 2 and the sanitary space 6 having the exhaust port opened is the bathroom 3, but the space for supplying and air-conditioning and the space for opening the exhaust port are Any space that is partitioned in the indoor space 1 may be used, and is not limited to the above. That is, the space for supplying and air-conditioning may be a corridor, and the space for opening the exhaust port may be set in the washroom 4.
また、上記実施の形態では、吹出し口12と吸込み口16をそれぞれリビング2と浴室3の各1箇所に開口する構成を示したが、吹出し口と吸込口の数はこれに限定されるものではない。例えば吹出し口12をリビング2と廊下の2箇所に開口する構成としても良い。   Moreover, in the said embodiment, although the structure which opens the blower outlet 12 and the suction inlet 16 in each one place of the living room 2 and the bathroom 3 was shown, respectively, the number of a blower outlet and a suction inlet is not limited to this. Absent. For example, it is good also as a structure which opens the blower outlet 12 in two places, the living room 2 and a corridor.
また、上記実施の形態では、排気のための吸込み口16を本体7のグリル15に設けたカセットタイプとしているが、本体7の吸込み口16にダクトを接続して、そのダクトの先に排気したい空間の天井の別の吸込口と接続し、本体7は天井裏に隠蔽設置する隠蔽タイプでも良い。   Moreover, in the said embodiment, although it has set as the cassette type which provided the suction inlet 16 for exhaust in the grill 15 of the main body 7, the space which wants to exhaust to the tip of the duct by connecting a duct to the suction inlet 16 of the main body 7 The main body 7 may be a concealment type that is concealed and installed behind the ceiling.
また、上記実施の形態では、冷媒回路39にバイパス回路43およびバイパス回路44の2系統のバイパス回路を設ける構成を示したが、バイパス回路は1系統のみとしても良い。   Moreover, in the said embodiment, although the structure which provided the bypass circuit 43 of the bypass circuit 43 and the bypass circuit 44 in the refrigerant circuit 39 was shown, a bypass circuit is good also as only one system.
また、上記実施の形態では、冷媒加熱手段47を第二熱交換器29と並列状態に設ける構成を示したが、冷媒回路39内において第二熱交換器29と直列状態に介在させる構成としても良い。   Moreover, in the said embodiment, although the structure which provides the refrigerant | coolant heating means 47 in parallel with the 2nd heat exchanger 29 was shown, as a structure which interposes in the refrigerant | coolant circuit 39 in series with the 2nd heat exchanger 29, it is also possible. good.
また、上記実施の形態では、開閉弁45および開閉弁46を開放と閉鎖の2段階で切替える構成を示したが、開閉弁はバイパス回路の開閉を実現できるものであれば良く電子式膨張弁などを使用しても良い。   In the above embodiment, the on / off valve 45 and the on / off valve 46 are switched in two stages of opening and closing. However, the opening / closing valve may be an electronic expansion valve or the like as long as it can open and close the bypass circuit. May be used.
また、上記実施の形態では、減圧手段として第2の開閉弁48とキャピラリチューブ49を並列に設ける構成を示したが、減圧手段は、減圧作用を切替え可能なものであれば良く、電子式膨張弁を介在される構成としても良い。   In the above embodiment, the second opening / closing valve 48 and the capillary tube 49 are provided in parallel as the pressure reducing means. However, the pressure reducing means may be any one that can switch the pressure reducing action, and the electronic expansion It is good also as a structure by which a valve is interposed.
また、上記実施の形態では、冷媒加熱手段47の具体構成として冷媒加熱ヒーター59と冷媒−水熱交換器66の2種類の構成を示したが、冷媒加熱手段47は冷媒を加熱できるものであれば良いのであって、上記2種類に限定されるものではない。   In the above-described embodiment, two types of configurations of the refrigerant heater 59 and the refrigerant-water heat exchanger 66 are shown as specific configurations of the refrigerant heater 47. However, the refrigerant heater 47 can heat the refrigerant. However, the present invention is not limited to the above two types.
また、上記実施の形態では、冷媒−水熱交換器66の水側の配管に燃焼式給湯機もしくはヒートポンプ給湯機からの給湯水を供給する構成を示したが、冷媒−水熱交換器66の水側配管には高温の温水(例えば、40℃〜90℃)、あるいは常温の給水(例えば、1℃〜40℃)を供給するものであれば良く、燃焼式給湯機もしくはヒートポンプ給湯機の給湯水に限定されるものではない。例えば、ガス給湯機、電気温水器、石油給湯機の給湯、給水および床暖房などにて使用する暖房用循環水もしくは常温の市水を供給する構成や浴槽の残り湯を循環させるような構成としても良い。   Moreover, in the said embodiment, although the structure which supplies the hot water from a combustion type water heater or a heat pump water heater to the water side piping of the refrigerant | coolant-water heat exchanger 66 was shown, What is necessary is just to supply hot water (for example, 40 degreeC-90 degreeC) or normal temperature water supply (for example, 1 degreeC-40 degreeC) to a water side piping, Hot water supply of a combustion type water heater or a heat pump water heater It is not limited to water. For example, a configuration for supplying circulating water for heating or room temperature city water used in gas water heaters, electric water heaters, hot water supplies for oil water heaters, water supply and floor heating, etc. Also good.
また、上記実施の形態では、給気ファン17や排気ファン14、圧縮機40のモーターについては、AC/DCなど特に言及していないが、DCモーターにすれば特に省エネ性が向上するのは言うまでもない。   In the above-described embodiment, AC / DC and the like are not particularly mentioned with respect to the motors of the supply fan 17, the exhaust fan 14, and the compressor 40, but it goes without saying that the energy saving performance is particularly improved by using a DC motor. Yes.
また、上記実施の形態では、圧縮機40は2ローター横置き仕様としたが、低振動であれば、スクロールなどでも良く、低背であれば、縦置でも良い。   Moreover, in the said embodiment, although the compressor 40 was set as the 2-rotor horizontal installation specification, if it is a low vibration, a scroll etc. may be sufficient, and if it is low-profile, it may be installed vertically.
また、上記実施の形態では、本体7を浴室3の天井裏に吊り下げて設置する構成を示したが、設置場所・方法は、本体を設置できるスペースとメンテ性、遮音性、振動絶縁性が確保できれば良く、例えば、床置の本体7を室内や室外の機械室に設置したり、壁面内に埋め込んで設置する構成としても良い。   Moreover, in the said embodiment, although the structure which suspended the main body 7 on the ceiling back of the bathroom 3 was shown, the installation place and method have the space which can install a main body, maintainability, sound insulation, and vibration insulation. For example, the floor-mounted main body 7 may be installed in an indoor or outdoor machine room, or may be embedded in a wall surface.
以上のように本発明にかかる換気空調装置は、省スペース化と施工性の向上を図ることができ、また、サニタリー空間から発生する水分や臭いなどの排気を大風量で急速で行いながら、その空気の熱を回収して、室外の新鮮空気を給気しながら室内空間を空調することにより、空気質を向上させながら合わせて省エネな空調ができるものであり、サニタリー空間の換気、室内空間の給気・空調のみならず、住宅のリビング、寝室、キッチンあるいは洗面所等の居住空間、納戸、床下、倉庫などの非居住空間、非住宅の事務所、会議室、倉庫などの換気・給気・空調装置にも適用することができる。   As described above, the ventilation air-conditioning apparatus according to the present invention can save space and improve workability. In addition, while exhausting moisture and odor generated from the sanitary space rapidly with a large air volume, By collecting the heat of the air and air-conditioning the indoor space while supplying fresh outdoor air, the air quality can be improved while improving the air quality. Ventilation / air supply not only for air supply / air conditioning but also for living spaces in living rooms, bedrooms, kitchens or washrooms, non-residential spaces such as storage rooms, under floors, warehouses, non-residential offices, conference rooms, warehouses, etc.・ It can also be applied to air conditioners.
本発明の実施の形態1に係る換気空調装置が設置されている居住空間の見取り図The sketch of the living space where the ventilation air-conditioning apparatus concerning Embodiment 1 of this invention is installed 同換気空調装置の風路構成図Airway configuration diagram of the ventilation air conditioner 同換気空調装置の冷媒回路図Refrigerant circuit diagram of the ventilation air conditioner 同換気空調装置が設置されている天井裏透視図及び概略構成図Perspective view of the ceiling where the ventilation air conditioner is installed 同換気空調装置の冷媒加熱手段に採用できる冷媒加熱ヒーターの概略構成図Schematic configuration diagram of refrigerant heater that can be used as refrigerant heating means of the ventilation air conditioner 同換気空調装置の冷媒加熱手段に採用できる冷媒−水熱交換器の概略断面図Schematic sectional view of a refrigerant-water heat exchanger that can be used as a refrigerant heating means of the ventilation air conditioner 同換気空調装置の各運転パターンにおける動作状態図Operation state diagram in each operation pattern of the ventilation air conditioner
符号の説明Explanation of symbols
1 室内空間
3 浴室
4 洗面所
5 トイレ
6 サニタリー空間
7 本体
8 排気口
10 給気口
12 吹出し口
14 排気ファン
16 吸込み口
17 給気ファン
18 空調機
20 排気風路
23 給気風路
26 第一熱交換器
27 補助ヒーター
28 予熱ヒーター
29 第二熱交換器
31 風路切替調整手段
32 給気バイパス手段
33 排気バイパス手段
34 除湿切替手段
35 大型ドレン装置
36 ドレンポンプ
38 断熱材
39 冷媒回路
40 圧縮機
41 膨張機構
42 流路切替弁
43 バイパス回路
44 バイパス回路
45 開閉弁
46 開閉弁
47 冷媒加熱手段
48 第2の開閉弁
49 キャピラリーチューブ
51 コイル温センサー
52 コイル温センサー
59 冷媒加熱ヒーター
66 冷媒−水熱交換器
67 給湯機
DESCRIPTION OF SYMBOLS 1 Indoor space 3 Bathroom 4 Washroom 5 Toilet 6 Sanitary space 7 Main body 8 Exhaust port 10 Air supply port 12 Air outlet 14 Exhaust fan 16 Suction port 17 Air supply fan 18 Air conditioner 20 Exhaust air channel 23 Supply air channel 26 First heat Exchanger 27 Auxiliary heater 28 Preheating heater 29 Second heat exchanger 31 Air path switching adjustment means 32 Supply air bypass means 33 Exhaust bypass means 34 Dehumidification switching means 35 Large drain device 36 Drain pump 38 Heat insulating material 39 Refrigerant circuit 40 Compressor 41 Expansion mechanism 42 Flow path switching valve 43 Bypass circuit 44 Bypass circuit 45 On-off valve 46 On-off valve 47 Refrigerant heating means 48 Second on-off valve 49 Capillary tube 51 Coil temperature sensor 52 Coil temperature sensor 59 Refrigerant heating heater 66 Refrigerant-water heat exchange Unit 67 Water heater

Claims (12)

  1. 室外に開口した給気口から室外空気を吸い込んで、室内空間に開口した吹出し口から空気を吹き出す給気ファンと、室内のサニタリー空間に開口した吸込み口から空気を吸い込んで、室外に開口した排気口から空気を吹出す排気ファンと、冷媒を圧縮する圧縮機と、前記給気ファンにより送風される空気と冷媒を熱交換させる第一熱交換器と、冷媒を膨張させる膨張機構と、前記排気ファンにより送風される空気と冷媒を熱交換させる第ニ熱交換器と、前記圧縮機、前記第一熱交換器、前記膨張機構、前記第二熱交換器の順または、前記圧縮機、前記第二熱交換器、前記膨張機構、前記第一熱交換器の順に冷媒が循環するように配管した冷媒回路とを備え、前記第一熱交換器と前記第二熱交換器の間で冷媒により熱を移動させることによって、前記サニタリー空間を換気しながら前記室内空間を暖房または冷房し、前記サニタリー空間に開口した前記吸込み口に吸込まれる空気を前記サニタリー空間以外に設置された空調機によって空調された吹出し空気とし、前記吹出し空気の熱を利用するものであって、前記第一熱交換器と前記第二熱交換器を含む給気風路と排気風路の下部に、凝縮水または結露水を排水または蒸発させる底部に勾配を設けたドレン装置の一番深い部分にドレンポンプを備え、前記ドレン装置より高いところに排水する場合に前記ドレンポンプを運転させることを特徴とする換気空調装置。 An air intake fan that sucks outdoor air from an air supply opening that opens to the outside and blows air from an air discharge opening that opens to the indoor space, and an exhaust that opens to the outside by sucking air from the air intake opening that opens to the indoor sanitary space An exhaust fan that blows air from the mouth, a compressor that compresses the refrigerant, a first heat exchanger that exchanges heat between the air blown by the air supply fan and the refrigerant, an expansion mechanism that expands the refrigerant, and the exhaust A second heat exchanger for exchanging heat between the air blown by the fan and the refrigerant; and the compressor, the first heat exchanger, the expansion mechanism, the second heat exchanger, or the compressor, the first A refrigerant circuit in which the refrigerant circulates in the order of the two heat exchangers, the expansion mechanism, and the first heat exchanger, and heat is generated by the refrigerant between the first heat exchanger and the second heat exchanger. By moving The indoor space is heated or cooled while ventilating the sanitary space, and the air sucked into the suction port opened in the sanitary space is blown air that is air-conditioned by an air conditioner installed outside the sanitary space, The heat of the blown air is used, and the bottom of the supply air passage and the exhaust air passage including the first heat exchanger and the second heat exchanger is drained or evaporated at the bottom. deepest portion includes a drain pump, ventilation air conditioning system you characterized thereby driving the drain pump when draining at higher than the drain device drains apparatus provided with a gradient.
  2. 室外空気を吸い込んで室内空間に吹出す給気風路とサニタリー空気を吸い込んで室外に排出する排気風路の周囲を断熱処理したことを特徴とする請求項1記載の換気空調装置。 Sucks outdoor air supply air passage and the periphery of the exhaust air passage for discharging the outdoor suck the sanitary air, characterized in that the heat insulation according to claim 1 Symbol mounting ventilation air-conditioning system that blows the indoor space.
  3. 少なくとも圧縮機、第一熱交換器、第二熱交換器、膨張機構を本体内部に内蔵したことを特徴とする請求項1または2記載の換気空調装置。 The ventilation air conditioner according to claim 1 or 2 , wherein at least a compressor, a first heat exchanger, a second heat exchanger, and an expansion mechanism are built in the main body.
  4. 給気ファンが送風する空気の少なくとも一部を加熱する補助ヒーターを更に備えたことを特徴とする請求項1からのいずれかに記載の換気空調装置。 The ventilation air conditioner according to any one of claims 1 to 3 , further comprising an auxiliary heater for heating at least a part of the air blown by the air supply fan.
  5. 排気ファンによって第二熱交換器に供給される前の空気を余熱するための予熱ヒーターを更に備えたことを特徴とする請求項1からのいずれかに記載の換気空調装置。 The ventilation air conditioner according to any one of claims 1 to 4 , further comprising a preheating heater for preheating the air before being supplied to the second heat exchanger by the exhaust fan.
  6. 第一熱交換器もしくは第二熱交換器に冷媒の温度を検知するコイル温センサーを備え、前記第一熱交換器もしくは第二熱交換器の冷媒温度に基づいて流路切替弁を切替えることを特徴とする請求項1からのいずれかに記載の換気空調装置。 The first heat exchanger or the second heat exchanger is provided with a coil temperature sensor for detecting the temperature of the refrigerant, and the flow path switching valve is switched based on the refrigerant temperature of the first heat exchanger or the second heat exchanger. The ventilation air conditioner according to any one of claims 1 to 5 , wherein
  7. 圧縮機の吐出側から膨張機構に至る冷媒回路から分岐して、前記膨張機構から前記圧縮機の吸入側に至る冷媒回路に合流するバイパス回路と前記バイパス回路を開閉する開閉弁を更に備えたことを特徴とする請求項1からのいずれかに記載の換気空調装置。 A bypass circuit that branches from a refrigerant circuit that extends from the discharge side of the compressor to the expansion mechanism and merges with a refrigerant circuit that extends from the expansion mechanism to the suction side of the compressor, and an on-off valve that opens and closes the bypass circuit. The ventilation air conditioner according to any one of claims 1 to 6 .
  8. 第二熱交換器と直列もしくは並列となるように冷媒回路中に冷媒を加熱する冷媒加熱手段を介在させたことを特徴とする請求項1からのいずれかに記載の換気空調装置。 The ventilation air conditioner according to any one of claims 1 to 7 , wherein refrigerant heating means for heating the refrigerant is interposed in the refrigerant circuit so as to be in series or in parallel with the second heat exchanger.
  9. 冷媒加熱手段を電熱により冷媒を加熱する冷媒加熱ヒーターとしたことを特徴とする請求項記載の換気空調装置。 9. The ventilation air conditioner according to claim 8, wherein the refrigerant heating means is a refrigerant heater that heats the refrigerant by electric heating.
  10. 冷媒加熱手段を給湯水との熱交換により冷媒を加熱する冷媒−水熱交換器としたことを特徴とする請求項記載の換気空調装置。 The ventilation air conditioner according to claim 8, wherein the refrigerant heating means is a refrigerant-water heat exchanger that heats the refrigerant by exchanging heat with hot water.
  11. 冷媒−水熱交換器に供給される給湯水に、ヒートポンプ式給湯機で沸かされた湯を用いることを特徴とする請求項10記載の換気空調装置。 The ventilation air conditioner according to claim 10 , wherein hot water boiled by a heat pump type hot water heater is used as hot water supplied to the refrigerant-water heat exchanger.
  12. 冷媒−水熱交換器において冷媒が放熱するように、前記冷媒−水熱交換器に常温水を供給する構成としたことを特徴とする請求項10または11記載の換気空調装置。 The ventilation air conditioner according to claim 10 or 11 , wherein normal temperature water is supplied to the refrigerant-water heat exchanger so that the refrigerant radiates heat in the refrigerant-water heat exchanger.
JP2007225558A 2007-08-31 2007-08-31 Ventilation air conditioner Active JP5076745B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007225558A JP5076745B2 (en) 2007-08-31 2007-08-31 Ventilation air conditioner

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007225558A JP5076745B2 (en) 2007-08-31 2007-08-31 Ventilation air conditioner
US12/673,992 US20110100043A1 (en) 2007-08-31 2008-08-28 Air conditioning/ventilating system
CN2008801046166A CN101790667B (en) 2007-08-31 2008-08-28 Air conditioning/ventilating system
PCT/JP2008/002329 WO2009028184A1 (en) 2007-08-31 2008-08-28 Air conditioning/ventilating system

Publications (2)

Publication Number Publication Date
JP2009058175A JP2009058175A (en) 2009-03-19
JP5076745B2 true JP5076745B2 (en) 2012-11-21

Family

ID=40386923

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007225558A Active JP5076745B2 (en) 2007-08-31 2007-08-31 Ventilation air conditioner

Country Status (4)

Country Link
US (1) US20110100043A1 (en)
JP (1) JP5076745B2 (en)
CN (1) CN101790667B (en)
WO (1) WO2009028184A1 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011099054A1 (en) * 2010-02-10 2011-08-18 三菱電機株式会社 Air conditioner
CN102486325A (en) * 2010-12-01 2012-06-06 西安中科麦特电子技术设备有限公司 Circulating system of high-temperature aging room with ventilation function
US8408019B2 (en) * 2010-12-07 2013-04-02 Tai-Her Yang Air conditioning device utilizing temperature differentiation of exhausted gas to even temperature of external heat exchanger
CN102233316A (en) * 2011-04-20 2011-11-09 江苏剑桥涂装工程有限公司 Air interchanger with condensing unit
US8756943B2 (en) * 2011-12-21 2014-06-24 Nordyne Llc Refrigerant charge management in a heat pump water heater
US9383126B2 (en) 2011-12-21 2016-07-05 Nortek Global HVAC, LLC Refrigerant charge management in a heat pump water heater
US10222085B2 (en) 2012-02-29 2019-03-05 Carrier Corporation Energy recovery ventilator with reduced power consumption
EP2719967B1 (en) * 2012-10-09 2019-02-06 Roth Werke GmbH Method for the temperature control of a building
SE537022C2 (en) * 2012-12-21 2014-12-09 Fläkt Woods AB Process and apparatus for defrosting an evaporator wide air handling unit
CN103759455B (en) * 2014-01-27 2015-08-19 青岛海信日立空调系统有限公司 Reclamation frequency conversion thermal multiple heat pump and control method thereof
JP2016040504A (en) * 2014-08-12 2016-03-24 株式会社Lixil Ventilation device
WO2016024581A1 (en) * 2014-08-12 2016-02-18 株式会社Lixil Ventilation device
JP6333110B2 (en) * 2014-08-12 2018-05-30 株式会社Lixil Ventilation equipment
JP2016044877A (en) * 2014-08-22 2016-04-04 株式会社Lixil Ventilation device
TWI558954B (en) * 2014-09-22 2016-11-21 建準電機工業股份有限公司 Air-exchanging device capable of adjusting indoor/outdoor temperature difference
CN107676892B (en) * 2016-08-02 2020-10-02 青岛海尔智能技术研发有限公司 Air conditioner and control method
TWI666411B (en) * 2017-10-25 2019-07-21 陳韋任 Heating, ventilation and air conditioning system and controlling method using the same
CN108361889A (en) * 2018-03-06 2018-08-03 青岛海尔空调器有限总公司 A kind of fresh air conditioner indoor unit
CN108386914A (en) * 2018-03-06 2018-08-10 青岛海尔空调器有限总公司 A kind of fresh air conditioner indoor unit

Family Cites Families (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5636336B2 (en) * 1976-03-24 1981-08-24
US4441335A (en) * 1982-08-19 1984-04-10 Honeywell Inc. Heat pump
JPS62169960A (en) * 1986-01-22 1987-07-27 Sanden Corp Bath room unit
JP2502097B2 (en) * 1987-07-27 1996-05-29 松下電工株式会社 Air conditioner ventilation system
US4766734A (en) * 1987-09-08 1988-08-30 Electric Power Research Institute, Inc. Heat pump system with hot water defrost
US5685162A (en) * 1991-04-26 1997-11-11 Nippondenso Co., Ltd. Automotive air conditioner having condenser and evaporator provided within air duct
US5473907A (en) * 1994-11-22 1995-12-12 Briggs; Floyd Heat pump with supplementary heat
JPH0914694A (en) * 1995-06-29 1997-01-17 Takasago Thermal Eng Co Ltd Water heat source type heat-pump unit air-conditioning system and water heat source type heat pump unit air conditioner
US6038879A (en) * 1995-08-08 2000-03-21 Yvon Turcotte Combined air exchange and air conditioning unit
US6604376B1 (en) * 1999-01-08 2003-08-12 Victor M. Demarco Heat pump using treated water effluent
JP4796234B2 (en) * 2000-04-19 2011-10-19 株式会社ハーマン Ventilation equipment
JP2002317998A (en) * 2001-04-20 2002-10-31 Daikin Ind Ltd Ventilating system
JP3801006B2 (en) * 2001-06-11 2006-07-26 ダイキン工業株式会社 Refrigerant circuit
KR100402366B1 (en) * 2001-08-31 2003-10-17 진금수 Heat pump system
CN2497198Y (en) * 2001-09-05 2002-06-26 董军 Indoor for condition controller
US6759634B2 (en) * 2001-09-11 2004-07-06 Donglei Wang Electric fryer
US7150314B2 (en) * 2001-09-17 2006-12-19 American Standard International Inc. Dual exhaust energy recovery system
JP2003130391A (en) * 2001-10-18 2003-05-08 Sanyo Electric Co Ltd Air conditioner
WO2003067156A2 (en) * 2002-02-06 2003-08-14 Jose Moratalla Desiccant dehumidification system
US6595011B1 (en) * 2002-05-02 2003-07-22 Linda Forgy Chaney Water cooled air conditioner
JP4338120B2 (en) * 2002-12-05 2009-10-07 新晃工業株式会社 Air conditioner
JP3811123B2 (en) * 2002-12-10 2006-08-16 松下電器産業株式会社 Double tube heat exchanger
US6974383B2 (en) * 2003-01-31 2005-12-13 American Standard International Inc. Cabinet for air handling equipment
JP2005055109A (en) * 2003-08-06 2005-03-03 Matsushita Electric Ind Co Ltd Heat pump type heating/drying apparatus
JP3969381B2 (en) * 2003-11-12 2007-09-05 松下電器産業株式会社 Multi-room air conditioner
JP4042688B2 (en) * 2003-12-16 2008-02-06 マックス株式会社 Bathroom air conditioner
JP2005233494A (en) * 2004-02-19 2005-09-02 Matsushita Electric Ind Co Ltd Heat exchange type ventilator
JP2005241160A (en) * 2004-02-27 2005-09-08 Toto Ltd Bathroom ventilating heating drying device
JP4425695B2 (en) * 2004-05-12 2010-03-03 三菱電機株式会社 Ventilation air conditioner
CN2738150Y (en) * 2004-06-08 2005-11-02 重庆大学 Separating heat recovering air conditioner
JP3864982B2 (en) * 2005-05-30 2007-01-10 ダイキン工業株式会社 Air conditioning system
US20070028640A1 (en) * 2005-08-02 2007-02-08 Little Giant Pump Company Condensate removal apparatus and method
JP2007051824A (en) * 2005-08-18 2007-03-01 Matsushita Electric Ind Co Ltd Air-conditioner
JP4696858B2 (en) * 2005-11-04 2011-06-08 パナソニック株式会社 Dehumidification system
KR20070074301A (en) * 2006-01-09 2007-07-12 삼성전자주식회사 Air-conditioner

Also Published As

Publication number Publication date
JP2009058175A (en) 2009-03-19
CN101790667A (en) 2010-07-28
WO2009028184A1 (en) 2009-03-05
US20110100043A1 (en) 2011-05-05
CN101790667B (en) 2013-03-06

Similar Documents

Publication Publication Date Title
JP5076745B2 (en) Ventilation air conditioner
JP4840207B2 (en) Ventilation air conditioner
JP2006071225A (en) Ventilating device and air conditioning system
US9746197B2 (en) Bathroom air-conditioner
KR100430278B1 (en) Air Conditioner Applying Heatpipes
JP5359170B2 (en) Air conditioner
JP5256828B2 (en) Ventilation air conditioner
JP4735573B2 (en) Ventilation air conditioner
JP2005114274A (en) Air conditioner
CN109425063B (en) Air conditioner
JP5228344B2 (en) Ventilation air conditioner
CN107763737B (en) Machine and air conditioner in air conditioning
KR100728590B1 (en) Power saving and high performance heat pump vantilation system
JP3945301B2 (en) Air conditioning system
JP2008020107A (en) Bathroom air conditioner
US20100248612A1 (en) Device for ventilating and air-conditioning bathroom
JP2009079782A (en) Ventilating/air-conditioning device and ventilating/air-conditioning system
JP2009063278A (en) Ventilation air conditioning device
JP5262251B2 (en) Ventilation air conditioner
JP5423790B2 (en) Bathroom ventilation air conditioner
JP5435161B2 (en) Air conditioner
WO2008059756A1 (en) Ventilating and air conditioning device
JPH1194286A (en) Air conditioner
JP6745895B2 (en) Air conditioning system
KR102232441B1 (en) Air conditioner with six port

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090312

RD01 Notification of change of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7421

Effective date: 20090414

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110510

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110704

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120207

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120316

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20120731

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20120813

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150907

Year of fee payment: 3

R151 Written notification of patent or utility model registration

Ref document number: 5076745

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150907

Year of fee payment: 3