JP2006002954A - Ventilator and air conditioner - Google Patents

Ventilator and air conditioner Download PDF

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JP2006002954A
JP2006002954A JP2004176738A JP2004176738A JP2006002954A JP 2006002954 A JP2006002954 A JP 2006002954A JP 2004176738 A JP2004176738 A JP 2004176738A JP 2004176738 A JP2004176738 A JP 2004176738A JP 2006002954 A JP2006002954 A JP 2006002954A
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air
heat exchange
exchange element
outside
outside air
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JP4404698B2 (en
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Takaaki Tamura
隆明 田村
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Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To restrain freezing of an outside air inlet of the whole heat exchange elements. <P>SOLUTION: This ventilator has an outside air introducing air duct 54 for introducing outside air into a room, and an inside air exhaust air duct 55 for exhausting inside air outside the room; and has the whole heat exchange elements 53 for exchanging heat between the outside air passing through the outside air introducing air duct 54 and the inside air passing through the inside air exhaust air duct 55. When the air temperature supplied to the outside air outlet 53A of the whole heat exchange elements 53 is the predetermined temperature or lower, a part of the inside air exhausted from an inside air outlet 53D of the whole heat exchange elements 53, is introduced to the outside air inlet 53A of the whole heat exchange elements 53. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

全熱交換素子を備えた換気装置及び空気調和装置に関する。   The present invention relates to a ventilator and an air conditioner including a total heat exchange element.

一般に、室内を締め切った状態が長時間に亘ると、室内の空気が汚れてくるので、室外の新鮮な空気を室内に取り入れる換気を行う換気装置がある。また、このような換気を行う際に、室内の温度をあまり変動させないのが望ましい。従って、上記の換気装置において、室内の換気の際に、室外に排出する内気と室内に供給する外気との間で熱交換させる全熱交換素子を備えたものがある（例えば、特許文献１参照）。   In general, when a room is closed for a long time, indoor air becomes dirty. Therefore, there is a ventilation device that performs ventilation by taking in fresh indoor air into the room. In addition, when performing such ventilation, it is desirable that the temperature in the room does not vary much. Therefore, in the above ventilator, there is a device provided with a total heat exchange element that exchanges heat between the inside air discharged to the outside and the outside air supplied to the room during indoor ventilation (see, for example, Patent Document 1). ).

また、一般に、圧縮機、熱源側熱交換器及び利用側熱交換器を備えた空気調和装置が知られている。この空気調和装置を運転させる場合は、通常、室内を締め切った状態で行われるので、上記換気装置を備え、室内の空調を行うとともに室内の換気を行う空気調和装置がある。
特開２００１−２３５２００号公報 In general, an air conditioner including a compressor, a heat source side heat exchanger, and a use side heat exchanger is known. When operating this air conditioning apparatus, since it is normally performed in the state which closed the room, there exists an air conditioning apparatus provided with the said ventilator and performing indoor air conditioning while ventilating a room.
JP 2001-235200 A

しかしながら、上記換気装置では、外気が低温（例えば、氷点下）のときに換気を行う場合、全熱交換素子に低温の外気が供給され続けると、全熱交換素子の外気入口に結露が生じ、この結露水が凍結して全熱交換素子の外気入口が閉塞されてしまうという問題があった。このように全熱交換素子の外気入口が閉塞された状態では、必要な換気量が得られないばかりでなく、全熱交換素子にかかる風圧が増大し、全熱交換素子が破損する恐れがあった。   However, in the above ventilator, when ventilation is performed when the outside air is at a low temperature (for example, below freezing), if low temperature outside air continues to be supplied to the total heat exchange element, condensation occurs at the outside air inlet of the total heat exchange element. There is a problem that the condensed water freezes and the outside air inlet of the total heat exchange element is blocked. In this way, when the outside air inlet of the total heat exchange element is blocked, not only the necessary ventilation volume cannot be obtained, but also the wind pressure applied to the total heat exchange element may increase and the total heat exchange element may be damaged. It was.

そこで、本発明の目的は、上述した従来の技術が有する課題を解消し、全熱交換素子の外気入口の凍結を抑制することができる換気装置及び空気調和装置を提供することにある。   Therefore, an object of the present invention is to provide a ventilator and an air conditioner that can solve the problems of the conventional techniques described above and can suppress freezing of the outside air inlet of the total heat exchange element.

上記課題を解決するため、本発明は、外気を室内に導く外気導入風路と、内気を室外に排出する内気排出風路とを備え、前記外気導入風路を通過する外気と前記内気排出風路を通過する内気との間で熱交換させる全熱交換素子を備えた換気装置において、前記全熱交換素子の外気入口に供給される空気温度が所定温度以下の場合、前記全熱交換素子の内気出口から排出される内気の一部を前記全熱交換素子の外気入口に導く供給手段を備えたことを特徴とするものである。   In order to solve the above problems, the present invention includes an outside air introduction air passage that guides outside air into the room, and an inside air discharge air passage that discharges the inside air to the outside, and the outside air that passes through the outside air introduction air passage and the inside air discharge air In the ventilator having a total heat exchange element that exchanges heat with the inside air passing through the passage, when the temperature of the air supplied to the outside air inlet of the total heat exchange element is equal to or lower than a predetermined temperature, the total heat exchange element A supply means for guiding a part of the inside air discharged from the inside air outlet to the outside air inlet of the total heat exchange element is provided.

この換気装置において、前記供給手段は、前記空気温度が前記所定温度以下となってから所定時間を経過した場合、前記全熱交換素子の内気出口から排出される内気の一部を前記全熱交換素子の外気入口に導くようにしてもよい。   In this ventilator, the supply means is configured to exchange a part of the internal air discharged from the internal air outlet of the total heat exchange element when the predetermined time has elapsed after the air temperature becomes equal to or lower than the predetermined temperature. It may be guided to the outside air inlet of the element.

また、上記換気装置において、前記供給手段は、前記外気導入風路における外気入口側と、前記内気排出風路における内気出口側とをバイパスするバイパス風路を備えるとともに、このバイパス風路にダンパを備え、前記全熱交換素子の内気出口から排出される内気の一部を前記全熱交換素子の外気入口に導く際に、前記ダンパを開くようにしてもよい。   In the ventilator, the supply means includes a bypass air passage that bypasses the outside air inlet side in the outside air introduction air passage and the inside air outlet side in the inside air discharge air passage, and a damper is provided in the bypass air passage. And the damper may be opened when a part of the inside air discharged from the inside air outlet of the total heat exchange element is guided to the outside air inlet of the total heat exchange element.

また、圧縮機、熱源側熱交換器及び利用側熱交換器を備えた空気調和装置において、外気を室内に導く外気導入風路と、内気を室外に排出する内気排出風路とを有し、前記外気導入風路を通過する外気と前記内気排出風路を通過する内気との間で熱交換させる全熱交換素子を有する換気装置を備え、前記全熱交換素子の外気入口に供給される空気温度が所定温度以下の場合、前記全熱交換素子の内気出口から排出される内気の一部を前記全熱交換素子の外気入口に導く供給手段を備えたことを特徴とするものである。   Further, in an air conditioner including a compressor, a heat source side heat exchanger, and a use side heat exchanger, an outside air introduction air passage that guides outside air into the room, and an inside air discharge air passage that discharges the inside air to the outside, Air provided with a ventilator having a total heat exchange element for exchanging heat between the outside air passing through the outside air introduction air passage and the inside air passing through the inside air exhaust air passage, and is supplied to the outside air inlet of the total heat exchange element When the temperature is equal to or lower than a predetermined temperature, there is provided supply means for guiding a part of the inside air discharged from the inside air outlet of the total heat exchange element to the outside air inlet of the total heat exchange element.

本発明によれば、全熱交換素子の外気入口の凍結を抑制することができる。   According to the present invention, freezing of the outside air inlet of the total heat exchange element can be suppressed.

以下、本発明の実施形態について図面を参照して説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図１は、本発明に係る空気調和装置の一実施形態が適用された空気調和装置を示す管路図である。また、図２は空気調和装置１０の利用側ユニット１３を下から見た斜視図である。また、図３は、空気調和装置１０の利用側ユニット１３を示す断面図である。   FIG. 1 is a pipeline diagram showing an air conditioner to which an embodiment of an air conditioner according to the present invention is applied. Moreover, FIG. 2 is the perspective view which looked at the utilization side unit 13 of the air conditioning apparatus 10 from the bottom. FIG. 3 is a cross-sectional view showing the use side unit 13 of the air conditioner 10.

空気調和装置１０は、図１に示すように、熱源側ユニット１１、及び利用側ユニット１３を有して構成される。熱源側ユニット１１の冷媒配管１４と、利用側ユニット１３の冷媒配管３０とが、冷媒配管（液管）１６、冷媒配管（ガス管）１７により接続される。   As shown in FIG. 1, the air conditioner 10 includes a heat source side unit 11 and a use side unit 13. The refrigerant pipe 14 of the heat source side unit 11 and the refrigerant pipe 30 of the use side unit 13 are connected by a refrigerant pipe (liquid pipe) 16 and a refrigerant pipe (gas pipe) 17.

熱源側ユニット１１は、例えば、室外に設置され、利用側ユニット１３は、被空調室である室内に設置される。   The heat source side unit 11 is installed outside a room, for example, and the use side unit 13 is installed in a room which is an air-conditioned room.

熱源側ユニット１１は、容量可変型の圧縮機１８と、アキュムレータ１９と、四方弁２０と、熱源側熱交換器２１と、電動膨張弁（減圧器）２２とを備え、冷媒配管１４に圧縮機１８が配設され、この圧縮機１８の吸込側にアキュムレータ１９が、吐出側に四方弁２０がそれぞれ配設され、この四方弁２０に熱源側熱交換器２１及び電動膨張弁２２が冷媒配管１４を介して接続される。更に、熱源側ユニット１１は、熱源側熱交換器２１に送風する熱源側送風機２４を備えている。   The heat source side unit 11 includes a variable capacity compressor 18, an accumulator 19, a four-way valve 20, a heat source side heat exchanger 21, and an electric expansion valve (decompressor) 22. 18, an accumulator 19 is disposed on the suction side of the compressor 18, and a four-way valve 20 is disposed on the discharge side. A heat source side heat exchanger 21 and an electric expansion valve 22 are connected to the refrigerant pipe 14 on the four-way valve 20. Connected through. Furthermore, the heat source side unit 11 includes a heat source side blower 24 that blows air to the heat source side heat exchanger 21.

利用側ユニット１３は、利用側熱交換器２５及び電動膨張弁（減圧器）２６を備え、冷媒配管３０に利用側熱交換器２５が配設され、この冷媒配管３０において利用側熱交換器２５近傍に電動膨張弁２６が配設されて構成される。この電動膨張弁２６は、空調負荷に応じて弁開度が調整される。更に、利用側ユニット１３は、利用側熱交換器２５に送風する利用側送風機２７を備えており、空気が利用側熱交換器２５で冷媒と熱交換した後に、被調和室に吹出される。また、利用側ユニット１３は、室内の換気を行う換気装置５０を備えている。この換気装置５０は、空調用の各種機器２５、２６、２７等が収められる利用側ユニット１３の筐体内に一体に収められている。   The use side unit 13 includes a use side heat exchanger 25 and an electric expansion valve (decompressor) 26, and the use side heat exchanger 25 is disposed in the refrigerant pipe 30, and the use side heat exchanger 25 is provided in the refrigerant pipe 30. An electric expansion valve 26 is disposed in the vicinity. The valve opening degree of the electric expansion valve 26 is adjusted according to the air conditioning load. Further, the use side unit 13 includes a use side blower 27 that blows air to the use side heat exchanger 25, and after the air exchanges heat with the refrigerant in the use side heat exchanger 25, the air is blown into the conditioned room. Moreover, the use side unit 13 is provided with the ventilation apparatus 50 which ventilates a room. This ventilation device 50 is housed integrally in the housing of the use side unit 13 in which the various devices 25, 26, 27, etc. for air conditioning are housed.

空気調和装置１０が暖房運転を行う場合、利用側ユニット１３における電動膨張弁２６は弁が全開に制御され、熱源側ユニット１１における電動膨張弁２２は弁開度が調整される。この状態で熱源側ユニット１１の圧縮機１８が起動されると、この圧縮機１８から吐出されたガス冷媒は、利用側熱交換器２５へ流入し、この利用側熱交換器２５にて凝縮液化され、室内を暖房する。この液冷媒は、電動膨張弁２６を通過して、電動膨張弁２２で減圧され、熱源側熱交換器２１にて蒸発され、四方弁２０へ至り、アキュムレータ１９を経て圧縮機１８に戻される。   When the air conditioning apparatus 10 performs the heating operation, the electric expansion valve 26 in the use side unit 13 is controlled to be fully opened, and the electric opening degree of the electric expansion valve 22 in the heat source side unit 11 is adjusted. When the compressor 18 of the heat source side unit 11 is started in this state, the gas refrigerant discharged from the compressor 18 flows into the use side heat exchanger 25 and is condensed and liquefied by the use side heat exchanger 25. The room is heated. The liquid refrigerant passes through the electric expansion valve 26, is depressurized by the electric expansion valve 22, is evaporated by the heat source side heat exchanger 21, reaches the four-way valve 20, and is returned to the compressor 18 through the accumulator 19.

また、空気調和装置１０が冷房運転を行う場合、電動膨張弁２２が全開に制御され、電動膨張弁２６の弁開度が調整される。この状態で、圧縮機１８から吐出されたガス冷媒は、熱源側熱交換器２１に流入して凝縮し、電動膨張弁２２を経て、利用側ユニット１３の電動膨張弁２６にて減圧され、利用側熱交換器２５で蒸発して、室内を冷房する。この利用側熱交換器２５で蒸発気化した冷媒は、熱源側ユニット１１の四方弁２０へ至り、アキュムレータ１９を経て圧縮機１８に戻される。   When the air conditioner 10 performs the cooling operation, the electric expansion valve 22 is controlled to be fully opened, and the valve opening degree of the electric expansion valve 26 is adjusted. In this state, the gas refrigerant discharged from the compressor 18 flows into the heat source side heat exchanger 21, condenses, is decompressed by the electric expansion valve 26 of the usage side unit 13 through the electric expansion valve 22, and used. It evaporates in the side heat exchanger 25 and cools the room. The refrigerant evaporated by the use side heat exchanger 25 reaches the four-way valve 20 of the heat source side unit 11 and is returned to the compressor 18 through the accumulator 19.

熱源側ユニット１１には、空気調和装置１０全体の運転制御を行う制御手段としての制御装置４５が設けられている。ここで、この制御装置４５は、利用側ユニット１３に設けられる場合であってもよいし、これらユニット１１，１３とは別体（例えば、リモートコントローラ）に設けられてもよい。   The heat source side unit 11 is provided with a control device 45 as control means for performing operation control of the entire air conditioner 10. Here, the control device 45 may be provided in the use side unit 13 or may be provided separately from the units 11 and 13 (for example, a remote controller).

次に、利用側ユニット１３の換気装置５０について説明する。   Next, the ventilation device 50 of the use side unit 13 will be described.

換気装置５０は、室外空気（外気）を室内に導く外気導入部５１と、室内空気（内気）を室外に排気する内気排出部５２とを備えている。また、換気装置５０は、全熱交換素子５３を備えている。この全熱交換素子５３は、図４に示すように、蛇行状に折り曲げた折曲げ紙Ａに平板状紙Ｂをのせ、その上に、折曲げ紙Ａとはその折り曲げ方向を変えた折曲げ紙Ｃを重ねるようにして、これら折曲げ紙Ａ，Ｃと平板状紙Ｂとを順次積層させて構成されている。これによって、全熱交換素子５３は、折曲げ紙Ａによって外気入口５３Ａと、この外気入口５３Ａに対向する外気出口５３Ｂとが形成されるとともに、折曲げ紙Ｃによって内気入口５３Ｃとこの内気入口５３Ｃに対向する内気出口５３Ｄとが形成される。この全熱交換素子５３は、外気導入部５１の外気導入風路５４及び内気排出部５２の内気排出風路５５に跨るように配置され、外気導入風路５４を通過する外気と内気排出風路５５を通過する内気との間で熱交換させる機能を備えている。   The ventilator 50 includes an outside air introduction unit 51 that guides outdoor air (outside air) to the room, and an inside air discharge unit 52 that exhausts room air (inside air) to the outside of the room. The ventilator 50 includes a total heat exchange element 53. As shown in FIG. 4, the total heat exchange element 53 has a flat paper B placed on a folded paper A folded in a serpentine shape, and the folded paper A is folded with its folding direction changed. The folded sheets A and C and the flat sheet B are sequentially laminated so that the sheets C are stacked. As a result, the total heat exchange element 53 forms the outside air inlet 53A and the outside air outlet 53B opposite to the outside air inlet 53A by the folded paper A, and the inside air inlet 53C and the inside air inlet 53C by the folded paper C. To the inside air outlet 53D. The total heat exchange element 53 is disposed so as to straddle the outside air introduction air passage 54 of the outside air introduction portion 51 and the inside air discharge air passage 55 of the inside air discharge portion 52, and the outside air and the inside air discharge air passage passing through the outside air introduction air passage 54. A function of exchanging heat with the inside air passing through 55 is provided.

つまり、空気調和装置１０が冷房運転を行っている際に換気装置５０が換気運転を行う場合、全熱交換素子５３は、暖かい外気と冷えた室内の排気との間で熱交換して外気を冷やし、室内に給気している。また、空気調和装置１０が暖房運転を行っている際に換気装置５０が換気運転を行う場合、全熱交換素子５３は、冷たい外気と暖かい室内の排気との間で熱交換して外気を暖め、室内に給気している。これによって、換気運転により空調性が低下するのを抑制することができる。   In other words, when the ventilator 50 performs the ventilation operation while the air conditioner 10 is performing the cooling operation, the total heat exchange element 53 exchanges heat between the warm outside air and the cold indoor exhaust air to remove the outside air. It is cooled and air is supplied indoors. When the ventilator 50 performs the ventilation operation while the air conditioner 10 is performing the heating operation, the total heat exchange element 53 heats the outside air by exchanging heat between the cold outside air and the warm indoor exhaust. , Indoor air supply. Thereby, it can suppress that air-conditioning property falls by ventilation operation.

外気導入部５１は、外気導入風路５４における全熱交換素子５３の外気入口５３Ａ側に給気ファン５６及び外気フィルタ５７を備えるとともに、外気導入風路５４における全熱交換素子５３の外気出口５３Ｂ側に加湿器５８を備えている。この構成により、給気ダクト５９から導入された外気は、給気ファン５６を経た後、外気フィルタ５７を介して全熱交換素子５３に至り、ここで内気と熱交換した後、加湿器５８を経て吹出しルーバ６６（図３）により風向が調整されて室内に吹出される。この加湿器５８には加湿タンク５８Ａが接続され、この加湿タンク５８Ａの加湿水が加湿器５８に順次供給される。   The outside air introduction unit 51 includes a supply fan 56 and an outside air filter 57 on the outside air inlet 53A side of the total heat exchange element 53 in the outside air introduction air passage 54, and an outside air outlet 53B of the total heat exchange element 53 in the outside air introduction air passage 54. A humidifier 58 is provided on the side. With this configuration, the outside air introduced from the air supply duct 59 passes through the air supply fan 56 and then reaches the total heat exchange element 53 via the outside air filter 57. After heat exchange with the inside air, the humidifier 58 is Then, the air direction is adjusted by the blowout louver 66 (FIG. 3) and blown into the room. A humidifying tank 58A is connected to the humidifier 58, and humidified water from the humidifying tank 58A is sequentially supplied to the humidifier 58.

また、内気排出部５２は、内気排出風路５５における全熱交換素子５３の内気出口５３Ｄ側に風路変更用ダンパ６０及び排気ファン６１を備えている。この構成により、被調和室からの内気は、吸込みグリル６４（図３）を経て全熱交換素子５３に至り、ここで、外気と熱交換した後に、風路変更用ダンパ６０及び排気ファン６１を経て排気ダクト６２を介して室外に排気される。   The inside air discharge unit 52 includes an air path changing damper 60 and an exhaust fan 61 on the inside air outlet 53D side of the total heat exchange element 53 in the inside air discharge air passage 55. With this configuration, the inside air from the conditioned room reaches the total heat exchange element 53 via the suction grill 64 (FIG. 3), and after the heat exchange with the outside air, the air path change damper 60 and the exhaust fan 61 are Then, the air is exhausted outside through the exhaust duct 62.

風路変更用ダンパ６０は風路を遮断自在であり、風路変更用ダンパ６０が動作すると、全熱交換素子５３の内気出口５３Ｄ側が封鎖され、内気は、全熱交換素子５３をバイパスし、普通換気風路６３を介して排気ファン６１に至り、排気ダクト６２を介して室外に排気される。   The air path changing damper 60 can block the air path, and when the air path changing damper 60 is operated, the inside air outlet 53D side of the total heat exchange element 53 is blocked, and the inside air bypasses the total heat exchange element 53, The exhaust fan 61 is reached through the normal ventilation air passage 63 and is exhausted to the outside through the exhaust duct 62.

本実施形態では、空気調和装置１０の利用側ユニット１３が、図２に示すように、天井に吊り下げられる空気調和機本体１３Ａと、この空気調和機本体１３Ａの後部に連結されて一体化された外気調温用の換気装置本体５０Ａとを備えて構成されている。   In the present embodiment, as shown in FIG. 2, the use side unit 13 of the air conditioner 10 is connected to and integrated with an air conditioner body 13A suspended from the ceiling and a rear portion of the air conditioner body 13A. And a ventilator main body 50A for adjusting the outside air temperature.

空気調和機本体１３Ａの内部には、図３に示すように、上述した利用側熱交換器２５、利用側送風機２７、ドレンパン７１、さらには電装箱７２等が配置され、その吸込みグリル７３にはフィルタ７３Ａが配置されている。これが運転されると、吸込みグリル７３を介して内気が吸い込まれ、この内気は、利用側送風機２７を経て利用側熱交換器２５に至り、ここで冷媒と熱交換した後に、吹出し口７４を介して被調和室に吹出される。   As shown in FIG. 3, the use side heat exchanger 25, the use side blower 27, the drain pan 71, and the electrical box 72 are disposed inside the air conditioner main body 13 </ b> A. A filter 73A is arranged. When this is operated, the inside air is sucked in via the suction grill 73, and this inside air reaches the use side heat exchanger 25 via the use side blower 27, where it exchanges heat with the refrigerant and then passes through the outlet port 74. And blown out into the conditioned room.

換気装置本体５０Ａの内部には、上述した全熱交換素子５３、給気ファン５６、排気ファン６１等が配置され、その吸込みグリル６４にはフィルタ６４Ａが配置されている。   The above-described total heat exchange element 53, the air supply fan 56, the exhaust fan 61, and the like are disposed inside the ventilation device main body 50A, and the filter 64A is disposed on the suction grill 64.

本実施形態では、各本体１３Ａ，５０Ａの吹出し口７４，６７が夫々独立して形成されている。各吹出し口７４，６７は、近接配置され、空気調和機本体１３Ａの吹出し口７４から吹出される空気と、換気装置本体５０Ａの吹出し口６７から吹出される空気とを、各吹出し口７４，６７の出口でミキシング自在に構成されている。   In the present embodiment, the outlets 74 and 67 of the main bodies 13A and 50A are independently formed. The air outlets 74 and 67 are arranged close to each other, and the air blown out from the air outlet 74 of the air conditioner main body 13A and the air blown out from the air outlet 67 of the ventilator main body 50A are respectively connected to the air outlets 74 and 67. It is configured to be freely mixed at the exit.

この空気調和機本体１３Ａの高さＨ１は、図３に示すように、換気装置本体５０Ａの高さＨ２よりも低く形成され、この低くなった空気調和機本体１３Ａの上部には、換気装置本体５０Ａの外気導入風路５４Ｂが形成されている。この外気導入風路５４Ｂは、全熱交換素子５３で熱交換した外気を室内に導く風路である。この外気導入風路５４Ｂの高さと空気調和機本体１３Ａの高さＨ１とを足した全高が、換気装置本体５０Ａの高さＨ２とほぼ等しくなるように形成されている。   As shown in FIG. 3, the height H1 of the air conditioner main body 13A is formed lower than the height H2 of the ventilation apparatus main body 50A. A 50 A outside air introduction air passage 54B is formed. The outside air introduction air passage 54B is an air passage that guides the outside air heat-exchanged by the total heat exchange element 53 into the room. The total height obtained by adding the height of the outside air introduction air passage 54B and the height H1 of the air conditioner main body 13A is substantially equal to the height H2 of the ventilator main body 50A.

外気導入風路５４Ｂの先端部には、当該外気導入風路５４Ｂの幅とほぼ同一幅の吹出し口６７を備え、この吹出し口６７の全幅は、図５に示すように、空気調和機本体１３Ａの吹出し口７４の全幅と等しくなるように形成されている。   The front end portion of the outside air introduction air passage 54B is provided with a blowout port 67 having substantially the same width as the width of the outside air introduction air passage 54B. The full width of the blowout port 67 is 13A as shown in FIG. It is formed so as to be equal to the entire width of the air outlet 74.

また、図３に示すように、天井に吊り下げられる換気装置本体５０Ａは、その内部に全熱交換素子５３の収納部Ｒ１と、給気ファン５６及び排気ファン６１の収納部Ｒ２とを、換気装置本体５０Ａの奥行き方向に横並びに備えている。   As shown in FIG. 3, the ventilation device main body 50 </ b> A suspended from the ceiling has a housing portion R <b> 1 for the total heat exchange element 53 and a housing portion R <b> 2 for the air supply fan 56 and the exhaust fan 61. The main body 50A is provided side by side in the depth direction.

給気ファン５６及び排気ファン６１は、図５に示すように、幅Ｗ及び長さＬ並びに高さＨ（図３）を有する発泡樹脂製の風路形成体２０２内にまとめて収納されており、この風路形成体２０２は、両端部を規制部材２０５で規制された状態で、長さＬ方向に間隔をあけて固定された、長さＷ２及び高さＨ３（図３）を有する複数の載置板２０３上に載置されている。これら複数の載置板２０３は、給気ファン５６及び排気ファン６１における吸気通路及び排気通路を区画する仕切り板を兼ねている。また、風路形成体２０２の横位置を規制するため、図３に示すように、全熱交換素子収納部Ｒ１には、幅Ｗ１及び長さＬ１（図５）並びに高さＨ２を有する発泡樹脂製のエレメントケーシング（図示せず）が嵌め込まれ、このケーシングに、全熱交換素子５３が保持されている。   As shown in FIG. 5, the air supply fan 56 and the exhaust fan 61 are collectively stored in an air passage forming body 202 made of foamed resin having a width W, a length L, and a height H (FIG. 3). The air passage forming body 202 has a plurality of lengths W2 and heights H3 (FIG. 3) fixed at intervals in the length L direction with both ends regulated by the regulating member 205. It is mounted on the mounting plate 203. The plurality of mounting plates 203 also serve as partition plates that partition the intake passage and the exhaust passage in the supply fan 56 and the exhaust fan 61. Further, in order to regulate the lateral position of the air passage forming body 202, as shown in FIG. 3, the total heat exchange element storage portion R1 has a foamed resin having a width W1, a length L1 (FIG. 5), and a height H2. A made element casing (not shown) is fitted, and the total heat exchange element 53 is held in the casing.

全熱交換素子５３に対向する風路形成体２０２の面２０２Ａには、給気ファン５６の吹出し口に対応する開口部６０１と、この開口部６０１に連なり、給気ファン５６からの送風を全熱交換素子５３の全幅に導く導風部６０２とを備えて構成される。   On the surface 202A of the air passage forming body 202 facing the total heat exchange element 53, an opening 601 corresponding to the outlet of the air supply fan 56 and the opening 601 are connected to all the air blown from the air supply fan 56. And an air guide portion 602 that leads to the full width of the heat exchange element 53.

本実施形態では、全熱交換素子５３が、風路形成体２０２に形成された開口部６０１及び導風部６０２に対向して配置されているため、給気ファン５６による送風のかなりの量が、開口部６０１を経た後に、導風部６０２に導かれ、そこを通じて全熱交換素子５３の全幅にほぼ均等に配分される。   In the present embodiment, since the total heat exchange element 53 is disposed to face the opening 601 and the air guide portion 602 formed in the air passage forming body 202, a considerable amount of air blown by the air supply fan 56 is obtained. Then, after passing through the opening 601, the air is guided to the air guide portion 602, and is distributed almost evenly over the entire width of the total heat exchange element 53 through the opening portion 601.

ところで、外気が低温（例えば、氷点下）の場合、全熱交換素子５３の外気入口５３Ａには、結露が生じ、この結露水が凍結しやすい。   By the way, when the outside air is at a low temperature (for example, below freezing point), dew condensation occurs at the outside air inlet 53A of the total heat exchange element 53, and this dew condensation water tends to freeze.

本実施形態では、空気調和装置１０は、図１に示すように、全熱交換素子５３の内気出口５３Ｄから排出される内気の一部を、全熱交換素子５３の外気入口５３Ａ側に導くバイパス風路８０を備えている。   In the present embodiment, as shown in FIG. 1, the air conditioner 10 bypasses a part of the inside air discharged from the inside air outlet 53 </ b> D of the total heat exchange element 53 to the outside air inlet 53 </ b> A side of the total heat exchange element 53. An air passage 80 is provided.

このバイパス風路８０は、外気導入風路５４の外気入口側と、内気排出風路５５の内気出口側とをバイパスしている。より具体的には、バイパス風路８０は、外気導入風路５４における給気ファン５６の吸込側と、内気排出風路５５における排気ファン６１の吹出側とをバイパスしている。このバイパス風路８０は、ダクトで形成されており、給気ダクト５９や排気ダクト６２と略同じ径に設定されている。   The bypass air passage 80 bypasses the outside air inlet side of the outside air introduction air passage 54 and the inside air outlet side of the inside air discharge air passage 55. More specifically, the bypass air passage 80 bypasses the suction side of the air supply fan 56 in the outside air introduction air passage 54 and the blowout side of the exhaust fan 61 in the inside air discharge air passage 55. The bypass air passage 80 is formed of a duct and is set to have substantially the same diameter as the air supply duct 59 and the exhaust duct 62.

また、全熱交換素子５３の外気入口５３Ａに供給される外気の温度を検出する温度検出手段として、温度センサ４７が、全熱交換素子５３における外気入口５３Ａ近傍に設けられている。この温度センサ４７は、給気ファン５６の吹出し口に対応する開口部６０１（図５）近傍に設けるのが好ましい。つまり、この開口部６０１近傍が最も低温となり、開口部６０１近傍における全熱交換素子５３の外気入口５３Ａが凍結しやすいからである。また、内気温度を検出する内気温度検出手段としての温度センサ４８が、例えば、利用側ユニット１３の吸込みグリル７３（図３）に設けられている。また、外気温度を検出する外気温度検出手段としての温度センサ４９が、例えば、熱源側ユニット１１の不図示の吸込口に設けられている。   Further, a temperature sensor 47 is provided in the vicinity of the outside air inlet 53 </ b> A in the total heat exchange element 53 as a temperature detection means for detecting the temperature of the outside air supplied to the outside air inlet 53 </ b> A of the total heat exchange element 53. The temperature sensor 47 is preferably provided in the vicinity of the opening 601 (FIG. 5) corresponding to the outlet of the air supply fan 56. That is, the vicinity of the opening 601 has the lowest temperature, and the outside air inlet 53A of the total heat exchange element 53 in the vicinity of the opening 601 is likely to freeze. Further, a temperature sensor 48 as an inside air temperature detecting means for detecting the inside air temperature is provided, for example, on the suction grill 73 (FIG. 3) of the use side unit 13. Moreover, the temperature sensor 49 as an outside temperature detection means which detects outside temperature is provided in the suction opening not shown of the heat source side unit 11, for example.

このバイパス風路８０には、ダンパ８１が設けられており、このダンパ８１が閉じている場合は、バイパス風路８０が閉鎖される。   The bypass air passage 80 is provided with a damper 81. When the damper 81 is closed, the bypass air passage 80 is closed.

このバイパス風路８０及びダンパ８１は、図２に示すように、収納ボックス８２に収納されており、換気装置本体５０Ａに着脱自在に構成されている。排気ダクト６２及び給気ダクト５９は、この収納ボックス８２の下面若しくは背面に接続される。   As shown in FIG. 2, the bypass air passage 80 and the damper 81 are housed in a housing box 82, and are configured to be detachable from the ventilator main body 50A. The exhaust duct 62 and the air supply duct 59 are connected to the lower surface or the rear surface of the storage box 82.

このダンパ８１の開閉制御は、制御装置４５により行われる。以下、制御装置４５によるダンパ８１の制御動作について、図６に示す制御フローチャートを参照しながら説明する。   The opening / closing control of the damper 81 is performed by the control device 45. Hereinafter, the control operation of the damper 81 by the control device 45 will be described with reference to the control flowchart shown in FIG.

まず、制御装置４５は、内気温度が外気温度を上回るか否かを判断する（ステップＳ１）。なお、暖房運転を行っているとき、通常、内気温度は外気温度を上回るので、暖房運転を行っているか否かを判断してもよい。   First, the control device 45 determines whether or not the inside air temperature exceeds the outside air temperature (step S1). Note that when the heating operation is being performed, the inside air temperature usually exceeds the outside air temperature, so it may be determined whether or not the heating operation is being performed.

内気温度が外気温度を上回る場合（ステップＳ１；Ｙｅｓ）、制御装置４５は、温度センサ４７により検出された検出温度（全熱交換素子５３の外気入口５３Ａに供給される空気温度）が、全熱交換素子５３で凍結しそうな所定温度以下であるか否かを判断する（ステップＳ２）。   When the inside air temperature exceeds the outside air temperature (step S1; Yes), the control device 45 determines that the detected temperature detected by the temperature sensor 47 (the temperature of the air supplied to the outside air inlet 53A of the total heat exchange element 53) is the total heat. It is determined whether or not the temperature is lower than a predetermined temperature at which the exchange element 53 is likely to freeze (step S2).

検出温度が所定温度以下である場合（ステップＳ２；Ｙｅｓ）、制御装置４５は、検出温度が所定温度以下であるのを検出してから計時を開始し、全熱交換素子５３において凍結するのに十分な時間である第１の所定時間が経過したか否かを判断する（ステップＳ３）。計時を開始してから第１の所定時間が経過しておらず（ステップＳ３；Ｎｏ）、検出温度が所定温度以下である場合（ステップＳ２；Ｙｅｓ）は、計時を継続する。   When the detected temperature is equal to or lower than the predetermined temperature (step S2; Yes), the control device 45 starts measuring time after detecting that the detected temperature is equal to or lower than the predetermined temperature, and freezes in the total heat exchange element 53. It is determined whether or not a first predetermined time, which is a sufficient time, has elapsed (step S3). If the first predetermined time has not elapsed since the start of time measurement (step S3; No) and the detected temperature is equal to or lower than the predetermined temperature (step S2; Yes), time measurement is continued.

計時を開始してから（つまり、検出温度が所定温度以下であるのを検出してから）第１の所定時間が経過した場合（ステップＳ３；Ｙｅｓ）、全熱交換素子５３の外気入口５３Ａ側が凍結しそうであるので、制御装置４５は、ダンパ８１を開く制御を行う（ステップＳ４）。   When the first predetermined time has elapsed after starting the time measurement (that is, after detecting that the detected temperature is equal to or lower than the predetermined temperature) (step S3; Yes), the outside air inlet 53A side of the total heat exchange element 53 is Since it is likely to freeze, the control device 45 performs control to open the damper 81 (step S4).

このとき、給気ファン５６の運転によって外気導入風路５４における給気ファン５６の吸込側が負圧になっており、内気排出風路５５の全熱交換素子５３の内気出口５３Ｄ側の空気の一部は、バイパス風路８０を介して外気導入風路５４側に吸引されることとなる。これによって、全熱交換素子５３において熱交換し排出される内気の一部が、バイパス風路８０を介して全熱交換素子５３の外気入口５３Ａ側に導かれる。ここで、内気温度は、外気温度よりも高いので、全熱交換素子５３の外気入口５３Ａ側には、外気よりも高い温度の空気が導かれることとなる。また、外気導入風路５４に導入される外気の量は、内気が外気導入風路５４に戻された分だけ減少し、外気導入風路５４において外気と内気が混合して全熱交換素子５３の外気入口５３Ａに供給されることとなる。   At this time, due to the operation of the air supply fan 56, the suction side of the air supply fan 56 in the outside air introduction air passage 54 has a negative pressure, and the air on the inside air outlet 53 </ b> D side of the total heat exchange element 53 of the inside air discharge air passage 55 The part is sucked to the outside air introduction air passage 54 side via the bypass air passage 80. As a result, part of the internal air that is exchanged and exhausted in the total heat exchange element 53 is guided to the outside air inlet 53A side of the total heat exchange element 53 via the bypass air passage 80. Here, since the inside air temperature is higher than the outside air temperature, air having a temperature higher than that of the outside air is guided to the outside air inlet 53 </ b> A side of the total heat exchange element 53. Further, the amount of the outside air introduced into the outside air introduction air passage 54 is reduced by the amount of the inside air returned to the outside air introduction air passage 54, and the outside air and the inside air are mixed in the outside air introduction air passage 54, so that the total heat exchange element 53. To the outside air inlet 53A.

このように、例えば氷点下の低温外気によって全熱交換素子５３が凍結しそうな場合、全熱交換素子５３の外気入口５３Ａに温められた空気が供給されることとなるので、換気装置５０の換気運転を停止させることなく、全熱交換素子５３外気入口５３Ａが結露水で凍結するのを抑制することができる。   As described above, for example, when the total heat exchange element 53 is likely to be frozen by low-temperature outside air below freezing point, the warmed air is supplied to the outside air inlet 53A of the total heat exchange element 53. Therefore, the ventilation operation of the ventilation device 50 is performed. It is possible to suppress freezing of the total heat exchange element 53 outside air inlet 53A with condensed water without stopping the operation.

また、排出される内気の一部が室内に戻されるものの、それ以外の内気は、室外に排出されるので、室内の空気を清浄に保つことができる。   Further, although a part of the discharged inside air is returned to the room, the other inside air is discharged outside the room, so that the indoor air can be kept clean.

次に、制御装置４５は、ダンパ８１が開かれてから第２の所定時間（例えば、１０分間）が経過したか否かを判断する（ステップＳ５）。この第２の所定時間は、全熱交換素子５３の外気入口５３Ａにおける凍結を回避できる程度の長さに設定されている。   Next, the control device 45 determines whether or not a second predetermined time (for example, 10 minutes) has elapsed since the damper 81 was opened (step S5). The second predetermined time is set to a length that can avoid freezing at the outside air inlet 53A of the total heat exchange element 53.

そして、この第２の所定時間が経過していない場合は（ステップＳ５；Ｎｏ）、第２の所定時間が経過するまで、ダンパ８１が開いた状態を維持し、第２の所定時間が経過した場合（ステップＳ５；Ｙｅｓ）、制御装置４５は、ダンパ８１を閉じる制御をする。これによって、バイパス風路８０が閉鎖される。従って、全熱交換素子５３を経た内気は、全て室外に排出される。   If the second predetermined time has not elapsed (step S5; No), the damper 81 is kept open until the second predetermined time has elapsed, and the second predetermined time has elapsed. In the case (step S5; Yes), the control device 45 performs control to close the damper 81. As a result, the bypass air passage 80 is closed. Therefore, all the inside air that has passed through the total heat exchange element 53 is discharged to the outside.

なお、内気温度が外気温度を下回る場合（ステップＳ１；Ｎｏ）や検出温度が所定温度を上回る場合（ステップＳ２；Ｎｏ）、全熱交換素子５３を経た内気は、室外に排気するのがよいので、ダンパ８１は閉じたままにしておく。   When the inside air temperature is lower than the outside air temperature (step S1; No) or when the detected temperature is higher than the predetermined temperature (step S2; No), the inside air that has passed through the total heat exchange element 53 is preferably exhausted outside the room. The damper 81 is kept closed.

以上説明したように、全熱交換素子５３の外気入口５３Ａに供給される空気温度が所定温度以下の場合、ダンパ８１を開くことにより、内気の一部が外気導入風路５４に供給され、外気導入風路５４に導入された外気と混合して全熱交換素子５３の外気入口５３Ａに導かれるので、全熱交換素子５３の外気入口５３Ａの凍結を抑制することができる。   As described above, when the air temperature supplied to the outside air inlet 53A of the total heat exchange element 53 is equal to or lower than the predetermined temperature, a part of the inside air is supplied to the outside air introduction air passage 54 by opening the damper 81, and the outside air Since it is mixed with the outside air introduced into the introduction air passage 54 and guided to the outside air inlet 53A of the total heat exchange element 53, freezing of the outside air inlet 53A of the total heat exchange element 53 can be suppressed.

以上、一実施形態に基づいて本発明を説明したが、本発明は、これに限定されるものではない。   As mentioned above, although this invention was demonstrated based on one Embodiment, this invention is not limited to this.

例えば、上記実施形態では、収納ボックス８２にバイパス風路８０及びダンパ８１が収納されている場合について説明したが、これに限らず、換気装置本体５０Ａの内部にバイパス風路８０及びダンパ８１が収納されている場合であってもよい。   For example, in the above-described embodiment, the case where the bypass air passage 80 and the damper 81 are stored in the storage box 82 has been described. However, the present invention is not limited thereto, and the bypass air passage 80 and the damper 81 are stored inside the ventilation device main body 50A. It may be the case.

本発明に係る空気調和装置の一実施形態が適用された氷蓄熱ユニットを備えた空気調和装置を示す管路図である。It is a pipe line figure showing an air harmony device provided with an ice heat storage unit to which one embodiment of an air harmony device concerning the present invention was applied. 空気調和装置の利用側ユニットを下から見た斜視図である。It is the perspective view which looked at the utilization side unit of an air conditioning apparatus from the bottom. 空気調和装置の利用側ユニットを示す断面図である。It is sectional drawing which shows the utilization side unit of an air conditioning apparatus. 全熱交換素子の斜視図である。It is a perspective view of a total heat exchange element. 空気調和装置の利用側ユニットの平面図である。It is a top view of the utilization side unit of an air conditioning apparatus. 制御装置によるダンパの制御を示す制御フローチャートである。It is a control flowchart which shows control of the damper by a control apparatus.

符号の説明Explanation of symbols

１０ 空気調和装置
１８ 圧縮機
２１ 熱源側熱交換器
２５ 利用側熱交換器
３５ 蓄熱コイル
３６ 氷蓄熱槽
４５ 制御装置（供給手段）
５３ 全熱交換素子
５４ 外気導入風路
５５ 内気排出風路
８０ バイパス風路（供給手段）
８１ ダンパ（供給手段） DESCRIPTION OF SYMBOLS 10 Air conditioning apparatus 18 Compressor 21 Heat source side heat exchanger 25 Use side heat exchanger 35 Thermal storage coil 36 Ice thermal storage tank 45 Control apparatus (supply means)
53 Total heat exchange element 54 Outside air introduction air passage 55 Inside air discharge air passage 80 Bypass air passage (supply means)
81 Damper (supply means)

Claims (4)

外気を室内に導く外気導入風路と、内気を室外に排出する内気排出風路とを備え、
前記外気導入風路を通過する外気と前記内気排出風路を通過する内気との間で熱交換させる全熱交換素子を備えた換気装置において、
前記全熱交換素子の外気入口に供給される空気温度が所定温度以下の場合、前記全熱交換素子の内気出口から排出される内気の一部を前記全熱交換素子の外気入口に導く供給手段を備えたことを特徴とする換気装置。 An outside air introduction air passage that guides outside air into the room and an inside air discharge air passage that exhausts the inside air to the outside,
In a ventilator comprising a total heat exchange element for exchanging heat between outside air passing through the outside air introduction air passage and inside air passing through the inside air exhaust air passage,
Supply means for guiding a part of the inside air discharged from the inside air outlet of the total heat exchange element to the outside air inlet of the total heat exchange element when the temperature of the air supplied to the outside air inlet of the total heat exchange element is a predetermined temperature or less Ventilator characterized by comprising. 請求項１に記載の換気装置において、
前記供給手段は、前記空気温度が前記所定温度以下となってから所定時間を経過した場合、前記全熱交換素子の内気出口から排出される内気の一部を前記全熱交換素子の外気入口に導くことを特徴とする換気装置。 The ventilator according to claim 1,
When a predetermined time has elapsed since the air temperature became equal to or lower than the predetermined temperature, the supply means transfers a part of the internal air discharged from the internal air outlet of the total heat exchange element to the external air inlet of the total heat exchange element. Ventilation device characterized by guiding. 請求項１又は請求項２に記載の換気装置において、
前記供給手段は、前記外気導入風路における外気入口側と、前記内気排出風路における内気出口側とをバイパスするバイパス風路を備えるとともに、このバイパス風路にダンパを備え、前記全熱交換素子の内気出口から排出される内気の一部を前記全熱交換素子の外気入口に導く際に、前記ダンパを開くことを特徴とする換気装置。 The ventilator according to claim 1 or 2,
The supply means includes a bypass air passage that bypasses the outside air inlet side in the outside air introduction air passage and the inside air outlet side in the inside air discharge air passage, and includes a damper in the bypass air passage, and the total heat exchange element A ventilator characterized in that the damper is opened when a part of the inside air discharged from the inside air outlet is led to the outside air inlet of the total heat exchange element. 圧縮機、熱源側熱交換器及び利用側熱交換器を備えた空気調和装置において、
外気を室内に導く外気導入風路と、内気を室外に排出する内気排出風路とを有し、
前記外気導入風路を通過する外気と前記内気排出風路を通過する内気との間で熱交換させる全熱交換素子を有する換気装置を備え、
前記全熱交換素子の外気入口に供給される空気温度が所定温度以下の場合、前記全熱交換素子の内気出口から排出される内気の一部を前記全熱交換素子の外気入口に導く供給手段を備えたことを特徴とする空気調和装置。 In an air conditioner equipped with a compressor, a heat source side heat exchanger and a use side heat exchanger,
An outside air introduction air passage that guides outside air into the room, and an inside air discharge air passage that discharges inside air to the outside,
A ventilation device having a total heat exchange element for exchanging heat between the outside air passing through the outside air introduction air passage and the inside air passing through the inside air exhaust air passage;
Supply means for guiding a part of the inside air discharged from the inside air outlet of the total heat exchange element to the outside air inlet of the total heat exchange element when the temperature of the air supplied to the outside air inlet of the total heat exchange element is a predetermined temperature or less An air conditioner comprising:
JP2004176738A 2004-06-15 2004-06-15 Air conditioner Expired - Fee Related JP4404698B2 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007315713A (en) * 2006-05-26 2007-12-06 Max Co Ltd Air conditioner and building
JP2007315714A (en) * 2006-05-26 2007-12-06 Max Co Ltd Air conditioner and building
JP2007315711A (en) * 2006-05-26 2007-12-06 Max Co Ltd Air conditioner, heat exchange element and building
JP2007315710A (en) * 2006-05-26 2007-12-06 Max Co Ltd Air conditioner and building
WO2008102741A1 (en) 2007-02-23 2008-08-28 Daikin Industries, Ltd. Air conditioning and ventilating device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007315713A (en) * 2006-05-26 2007-12-06 Max Co Ltd Air conditioner and building
JP2007315714A (en) * 2006-05-26 2007-12-06 Max Co Ltd Air conditioner and building
JP2007315711A (en) * 2006-05-26 2007-12-06 Max Co Ltd Air conditioner, heat exchange element and building
JP2007315710A (en) * 2006-05-26 2007-12-06 Max Co Ltd Air conditioner and building
WO2008102741A1 (en) 2007-02-23 2008-08-28 Daikin Industries, Ltd. Air conditioning and ventilating device
US9303891B2 (en) 2007-02-23 2016-04-05 Daikin Industries, Ltd. Air conditioning ventilator

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