JP2002333237A - Heat transfer device - Google Patents

Heat transfer device

Info

Publication number
JP2002333237A
JP2002333237A JP2001143265A JP2001143265A JP2002333237A JP 2002333237 A JP2002333237 A JP 2002333237A JP 2001143265 A JP2001143265 A JP 2001143265A JP 2001143265 A JP2001143265 A JP 2001143265A JP 2002333237 A JP2002333237 A JP 2002333237A
Authority
JP
Japan
Prior art keywords
refrigerant
evaporator
water
header
liquid
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.)
Pending
Application number
JP2001143265A
Other languages
Japanese (ja)
Inventor
Koji Nagae
公二 永江
Original Assignee
Sanyo Electric Air Conditioning Co Ltd
Sanyo Electric Co Ltd
三洋電機株式会社
三洋電機空調株式会社
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 Sanyo Electric Air Conditioning Co Ltd, Sanyo Electric Co Ltd, 三洋電機株式会社, 三洋電機空調株式会社 filed Critical Sanyo Electric Air Conditioning Co Ltd
Priority to JP2001143265A priority Critical patent/JP2002333237A/en
Publication of JP2002333237A publication Critical patent/JP2002333237A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide a heat transfer device which can reduce a pressure loss of a refrigerant, enables the smooth execution of natural circulation of a refrigerant and prevention of scattering of condensate generated by an evaporator. SOLUTION: In the heat transfer device provided with a condenser 5 and the evaporator 9, interconnecting the condenser 5 and the evaporator 9 through a refrigerant liquid pipe 17 and a refrigerant gas pipe 19 and forming a natural circulation cycle, the evaporator 9 is provided with a header 23 on the liquid side in which refrigerant liquid flows; a header 25 on the gas side from which refrigerant gas flows out; and a plurality of straight pipes 27 intercoupling the two headers 23 and 25 and provided at the peripheries thereof with a plurality of fins 29. A water repellent filter 33 having air permeability is situated leeward of the evaporator 9.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、冷媒自然循環式の
熱移動装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat transfer device of a refrigerant natural circulation type.

【0002】[0002]

【従来の技術】一般に、冷媒を自然循環サイクル内で気
液相変化させることにより自然循環させるヒートパイプ
方式を用いた熱移動装置は知られている。この熱移動装
置は、凝縮器を備えると共に、この凝縮器よりも低位置
に蒸発器を備え、これらの間が液相冷媒の流下する冷媒
液管と気相冷媒の上昇する冷媒ガス管とによって連結さ
れて自然循環サイクルが形成される。この自然循環サイ
クル内には冷媒が封入されている。上記蒸発器は、複数
のフィンと、これらフィンを貫通する複数の直管と、こ
れら直管同士をつなぐ複数のUベンドとを備えて構成さ
れる。蒸発器は室内機に収納され、この蒸発器の下方に
はドレンパンが設置される。この室内機は室内を冷房す
る。
2. Description of the Related Art Generally, a heat transfer apparatus using a heat pipe system in which a refrigerant is naturally circulated by changing a gas-liquid phase in a natural circulation cycle is known. This heat transfer device has a condenser and an evaporator at a lower position than the condenser, and a refrigerant liquid pipe between which the liquid-phase refrigerant flows and a refrigerant gas pipe where the gas-phase refrigerant rises. Connected to form a natural circulation cycle. A refrigerant is sealed in the natural circulation cycle. The evaporator includes a plurality of fins, a plurality of straight pipes penetrating the fins, and a plurality of U-bends connecting the straight pipes. The evaporator is housed in an indoor unit, and a drain pan is installed below the evaporator. This indoor unit cools the room.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、上記蒸
発器を使用した場合、Uベンドにおける圧力損失が大き
いため、液冷媒が溜まり、冷媒自然循環が円滑に行われ
なくなる恐れがある。
However, when the above evaporator is used, since the pressure loss in the U-bend is large, the liquid refrigerant may be accumulated and the natural circulation of the refrigerant may not be performed smoothly.

【0004】また、蒸発器に結露が生じた場合に、結露
水がドレンパンに流れず、周囲に飛散してしまう恐れが
ある。
[0004] Further, when dew condensation occurs in the evaporator, there is a possibility that the dew water does not flow to the drain pan and scatters around.

【0005】そこで、本発明の目的は、上記課題を解消
するために、冷媒の圧力損失を低減させることができ、
冷媒自然循環を円滑に実施でき、蒸発器で生じた結露水
の飛散を防止できる熱移動装置を提供することにある。
[0005] Therefore, an object of the present invention is to reduce the pressure loss of the refrigerant in order to solve the above problems.
It is an object of the present invention to provide a heat transfer device capable of smoothly performing a natural circulation of a refrigerant and preventing scattering of dew water generated in an evaporator.

【0006】[0006]

【課題を解決するための手段】請求項1に記載の発明
は、凝縮器、蒸発器を備え、これら凝縮器、蒸発器の間
を冷媒液管、及び冷媒ガス管で接続し、自然循環サイク
ルを形成した熱移動装置において、前記蒸発器は、冷媒
液が流入する液側ヘッダと、冷媒ガスが流出するガス側
ヘッダと、これら両ヘッダを連結してこの周囲に複数の
フィンを有する複数の直管とを備え、前記蒸発器の風下
に通気性のある撥水性フィルタを設けたことを特徴とす
るものである。
The invention according to claim 1 comprises a condenser and an evaporator, and the condenser and the evaporator are connected by a refrigerant liquid pipe and a refrigerant gas pipe to form a natural circulation cycle. In the heat transfer device formed as above, the evaporator has a liquid-side header into which the refrigerant liquid flows, a gas-side header from which the refrigerant gas flows out, and a plurality of fins connected to these headers and having a plurality of fins therearound. A straight pipe, and a water-repellent filter having air permeability provided downstream of the evaporator.

【0007】請求項2に記載の発明は、請求項1に記載
の発明において、前記蒸発器及び前記撥水性フィルタの
下方にドレンパンを設けたことを特徴とするものであ
る。
According to a second aspect of the present invention, in the first aspect, a drain pan is provided below the evaporator and the water-repellent filter.

【0008】請求項1に記載の発明によれば、液側ヘッ
ダに流入し直管で蒸発した冷媒は、Uベンドを介さずに
ガス側ヘッダに送られるので、管路内抵抗が少なくな
り、冷媒の圧力損失を低減させることができ、冷媒自然
循環を円滑に実施でき、さらに、蒸発器に結露水が生じ
た場合、この結露水が撥水性フィルタに吹き飛ばされ、
この撥水性フィルタを伝って下方に滴下されるので、蒸
発器で生じた結露水の飛散を防止できる。
According to the first aspect of the present invention, since the refrigerant flowing into the liquid header and evaporating in the straight pipe is sent to the gas header without passing through the U-bend, the resistance in the pipeline is reduced. The pressure loss of the refrigerant can be reduced, the refrigerant can be naturally circulated smoothly, and further, when dew water is generated in the evaporator, the dew water is blown off by the water repellent filter,
Since the water is dropped downward along the water repellent filter, it is possible to prevent the dew water generated in the evaporator from scattering.

【0009】請求項2に記載の発明によれば、前記蒸発
器及び前記撥水性フィルタの下方にドレンパンが設けら
れたことから、蒸発器で生じた結露水はドレンパンに滴
下されるので、蒸発器で生じた結露水の飛散を防止でき
る。
According to the second aspect of the present invention, since the drain pan is provided below the evaporator and the water-repellent filter, the dew water generated in the evaporator is dropped on the drain pan. The scattering of dew water generated in the above can be prevented.

【0010】[0010]

【発明の実施の形態】以下、本発明の一実施の形態を図
面に基づいて説明する。
An embodiment of the present invention will be described below with reference to the drawings.

【0011】図1において、1は熱移動装置を示してお
り、この熱移動装置1は、水を冷却する冷凍機3と、凝
縮器として機能する冷媒対水熱交換器5と、室内機7と
を有して構成される。この室内機7には蒸発器9、冷媒
調整弁11及び室内へ送風する送風機13が収納されて
いる。冷媒対水熱交換器5は、例えばビルの屋上などの
高所に設置され、室内機7は、冷媒対水熱交換器5より
も低所であるビルの室内の天井板8の天井裏10に設置
される。この天井板8には吐出口12が設けられてお
り、この吐出口12から室内に送風される。
In FIG. 1, reference numeral 1 denotes a heat transfer device. The heat transfer device 1 includes a refrigerator 3 for cooling water, a refrigerant / water heat exchanger 5 functioning as a condenser, and an indoor unit 7. And is configured. The indoor unit 7 contains an evaporator 9, a refrigerant regulating valve 11, and a blower 13 for blowing air into the room. The refrigerant-to-water heat exchanger 5 is installed at a high place, for example, on the roof of a building, and the indoor unit 7 is a lower part 10 of the ceiling plate 8 inside the building, which is lower than the refrigerant-to-water heat exchanger 5. Installed in A discharge port 12 is provided in the ceiling plate 8, and air is blown into the room from the discharge port 12.

【0012】冷凍機3は例えば吸収式の冷凍機であり、
この冷凍機3と冷媒対水熱交換器5とは水配管15によ
ってループ状に接続される。
The refrigerator 3 is, for example, an absorption refrigerator.
The refrigerator 3 and the refrigerant-to-water heat exchanger 5 are connected in a loop by a water pipe 15.

【0013】この冷媒対水熱交換器5には冷媒液管17
及び冷媒ガス管19によって室内機7が接続され、自然
循環サイクルが形成されている。そして、この自然循環
サイクルの内部には、冷媒が封入されている。
This refrigerant-to-water heat exchanger 5 has a refrigerant liquid pipe 17.
The refrigerant gas pipe 19 connects the indoor unit 7 to form a natural circulation cycle. A refrigerant is sealed inside the natural circulation cycle.

【0014】冷媒調整弁11は冷媒液管17に接続され
る。また、冷媒を強制循環させるブースタポンプ21が
冷媒液管17に接続される。
The refrigerant regulating valve 11 is connected to a refrigerant liquid pipe 17. Further, a booster pump 21 for forcibly circulating the refrigerant is connected to the refrigerant liquid pipe 17.

【0015】上記蒸発器9は、図2に示すように、上部
に液冷媒を流入させる液側ヘッダ23を備えると共に、
下部にガス冷媒を流出させるガス側ヘッダ25を備え、
これら両ヘッダ23,25は、複数の直管27で連結さ
れ、これら直管27に複数のフィン29が取り付けられ
ている。液側ヘッダ23には、冷媒液管17が接続され
ており、ガス側ヘッダ25には、冷媒ガス管19が接続
されている。
As shown in FIG. 2, the evaporator 9 includes a liquid-side header 23 for allowing a liquid refrigerant to flow in an upper part thereof.
A gas-side header 25 that allows a gas refrigerant to flow out is provided at a lower portion,
The headers 23 and 25 are connected by a plurality of straight pipes 27, and a plurality of fins 29 are attached to the straight pipes 27. The refrigerant liquid pipe 17 is connected to the liquid header 23, and the refrigerant gas pipe 19 is connected to the gas header 25.

【0016】蒸発器9は斜めに傾けられて配置される。
蒸発器9の下方にはドレンパン31が設置され、斜めに
傾けられて配置された蒸発器9の下面近傍かつ風下に通
気性のある撥水性フィルタ33が設置される。この撥水
性フィルタ33は、例えばストッキング製の網状部材で
ある。
The evaporator 9 is disposed obliquely.
A drain pan 31 is installed below the evaporator 9, and a water-repellent filter 33 is installed near the lower surface of the evaporator 9, which is arranged obliquely, and leeward on the leeward side. The water-repellent filter 33 is, for example, a stocking net member.

【0017】この蒸発器9は、直管27が横になるよう
に配置した場合、複数の直管27の下部に液冷媒が溜ま
り、熱伝達を阻害する可能性があるので、図2に示すよ
うに、直管27が縦になるように配置するのが好まし
い。
When the evaporator 9 is arranged so that the straight pipes 27 are laid sideways, liquid refrigerant may accumulate below the plurality of straight pipes 27 and hinder heat transfer. Thus, it is preferable to arrange the straight pipe 27 so as to be vertical.

【0018】次に、この自然循環式の熱移動装置1の動
作を説明する。
Next, the operation of the natural circulation type heat transfer device 1 will be described.

【0019】冷凍機3が運転されて、冷媒対水熱交換器
5には例えば5℃の冷水が与えられる。すると、冷媒対
水熱交換器5では冷媒が凝縮し、比重の大きい液冷媒と
なって、冷媒液管17を通じて冷媒の自重により高所よ
り低所に、すなわち冷媒調整弁11を経て、室内機7に
流れる。
The refrigerator 3 is operated, and cold water of, for example, 5 ° C. is supplied to the refrigerant / water heat exchanger 5. Then, in the refrigerant-to-water heat exchanger 5, the refrigerant is condensed and becomes a liquid refrigerant having a large specific gravity. Flow to 7.

【0020】冷媒調整弁11で冷媒量を適正に調整され
た冷媒は、蒸発器9の液側ヘッダ23に流入し、直管2
7では液冷媒が蒸発し、室内が冷房される。この過程で
は、液冷媒は比重の極めて小さなガス冷媒となり、この
ガス冷媒は自重の軽さゆえに、蒸発器9のガス側ヘッダ
25から冷媒対水熱交換器5に冷媒ガス管19を通じて
戻される。すなわちこのシステムでは、冷媒が熱移動サ
イクル内で気液相変化することにより、自然循環するこ
とになる。この蒸発器9の直管27は、冷媒の圧力損失
が小さいので、Uベンドを使用したときのように液溜ま
りが生じて冷媒の流れが妨げられることがない。
The refrigerant whose refrigerant amount has been properly adjusted by the refrigerant regulating valve 11 flows into the liquid side header 23 of the evaporator 9, and flows through the straight pipe 2.
At 7, the liquid refrigerant evaporates and the room is cooled. In this process, the liquid refrigerant becomes a gas refrigerant having a very small specific gravity, and the gas refrigerant is returned from the gas side header 25 of the evaporator 9 to the refrigerant-to-water heat exchanger 5 through the refrigerant gas pipe 19 because of its light weight. That is, in this system, the refrigerant naturally circulates due to the gas-liquid phase change in the heat transfer cycle. Since the pressure loss of the refrigerant in the straight pipe 27 of the evaporator 9 is small, a liquid pool does not occur and the flow of the refrigerant is not obstructed as in the case of using the U-bend.

【0021】このような自然循環システムでは、液冷媒
とガス冷媒との比重の差に従ってサイクル内における冷
媒を自然循環させる。従って本来であれば循環用ポンプ
などは不要である。しかし、この自然循環システムを施
工するに当たり、冷媒対水熱交換器5と蒸発器9との間
に落差をとりにくい場合に、一つの例として、上記ブー
スタポンプ21が用いられる。
In such a natural circulation system, the refrigerant in the cycle is naturally circulated according to the difference in specific gravity between the liquid refrigerant and the gas refrigerant. Therefore, a circulating pump or the like is originally unnecessary. However, the booster pump 21 is used as an example in the case where it is difficult to make a head drop between the refrigerant / water heat exchanger 5 and the evaporator 9 when constructing the natural circulation system.

【0022】室内の空気は、天井板8に設けられた通風
口35を通過し、室内機7の上部から吸い込まれる。こ
の吸い込まれた空気は、上方から下方に蒸発器9を通過
することにより冷却されて、送風機13により吐出口1
2から室内に送風されて、室内が冷房される。
The indoor air passes through a ventilation port 35 provided on the ceiling plate 8 and is sucked from the upper part of the indoor unit 7. The sucked air is cooled by passing through the evaporator 9 from above to below, and is blown by the blower 13 to the discharge port 1.
Air is blown into the room from 2 to cool the room.

【0023】蒸発器9には結露水が生じる場合がある。
この結露水は、直接ドレンパン31には滴下せずに、風
下に設置の撥水性フィルタ33に吹き飛ばされる。この
撥水性フィルタ33に吹き飛ばされた結露水は、撥水性
フィルタ33を伝って蒸発器9の下方に設置のドレンパ
ン31に滴下される。
There is a case where dew water is generated in the evaporator 9.
This dew water is blown off to the water-repellent filter 33 installed on the leeward, without dripping directly onto the drain pan 31. The dew water blown off by the water-repellent filter 33 is dropped on the drain pan 31 installed below the evaporator 9 through the water-repellent filter 33.

【0024】本実施の形態によれば、蒸発器9は、冷媒
液が流入する液側ヘッダ23と、冷媒ガスが流出するガ
ス側ヘッダ25と、これら両ヘッダ23,25を連結し
てこの周囲に複数のフィン29を有する複数の直管27
とを備えたことから、液側ヘッダ23に流入し直管27
で蒸発したガス冷媒は、Uベンドを介さずにガス側ヘッ
ダ25に送られるので、管路内抵抗が少なくなり、冷媒
の圧力損失を低減させることができ、冷媒自然循環を円
滑に実施できる。
According to the present embodiment, the evaporator 9 is composed of the liquid header 23 into which the refrigerant liquid flows, the gas header 25 from which the refrigerant gas flows out, and the two headers 23, 25 connected to each other. Straight pipes 27 each having a plurality of fins 29
The straight pipe 27
The gas refrigerant evaporated in the above is sent to the gas side header 25 without passing through the U-bend, so that the resistance in the pipeline is reduced, the pressure loss of the refrigerant can be reduced, and the refrigerant can be smoothly circulated smoothly.

【0025】さらに、蒸発器9を斜めに傾けて配置し、
蒸発器9の下面近傍かつ風下に通気性のある撥水性フィ
ルタ33を設けたことから、蒸発器9で生じた結露水が
撥水性フィルタ33に吹き飛ばされ、撥水性フィルタ3
3を伝って蒸発器9下方に設置のドレンパン31に滴下
されるので、蒸発器9で生じた結露水の飛散を防止でき
る。
Further, the evaporator 9 is disposed obliquely,
Since the air-permeable water-repellent filter 33 is provided near the lower surface of the evaporator 9 and on the leeward side, the dew water generated in the evaporator 9 is blown off by the water-repellent filter 33, and the water-repellent filter 3
Since the water is dripped onto the drain pan 31 provided below the evaporator 9 along the evaporator 9, it is possible to prevent the dew condensation water generated in the evaporator 9 from scattering.

【0026】以上、一実施の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。
Although the present invention has been described based on an embodiment, the present invention is not limited to this.

【0027】上記の実施の形態では、蒸発器9は、この
ガス側ヘッダ25が上、液側ヘッダ23が下となるよう
に配置したが、図示しないが例えば図2(a)におい
て、蒸発器9を90度右側に回転させ、両ヘッダ23,
25が左右になるようにした場合、液冷媒を上から下へ
流し、ガス冷媒が下から上へ向かって流れるようにして
もよい。特にこの場合は、複数のフィン29が上下方向
に配置されるため、このフィン29に付着した結露水
は、複数のフィン29が水平方向に配置される場合(図
2の状態)と比較して、円滑に滴下するため、撥水性フ
ィルタ33は不要になる。
In the above embodiment, the evaporator 9 is arranged such that the gas side header 25 is located above and the liquid side header 23 is located below. However, although not shown, for example, in FIG. 9 is rotated 90 degrees to the right, and both headers 23,
When 25 is set to the left and right, the liquid refrigerant may flow from top to bottom, and the gas refrigerant may flow from bottom to top. Particularly, in this case, since the plurality of fins 29 are arranged in the vertical direction, the dew condensation water attached to the fins 29 is compared with the case where the plurality of fins 29 are arranged in the horizontal direction (the state of FIG. 2). , The water-repellent filter 33 is not required.

【0028】[0028]

【発明の効果】本発明によれば、冷媒の圧力損失を低減
させることができ、冷媒自然循環を円滑に実施でき、蒸
発器で生じた結露水の飛散を防止できる。
According to the present invention, the pressure loss of the refrigerant can be reduced, the natural circulation of the refrigerant can be carried out smoothly, and the scattering of dew water generated in the evaporator can be prevented.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に係る熱移動装置の一実施の形態を示す
回路図である。
FIG. 1 is a circuit diagram showing one embodiment of a heat transfer device according to the present invention.

【図2】図2(a)は、蒸発器の正面図であり、図2
(b)は、蒸発器の側面図である。
FIG. 2A is a front view of an evaporator, and FIG.
(B) is a side view of the evaporator.

【符号の説明】[Explanation of symbols]

1 熱移動装置 5 冷媒対水熱交換器(凝縮器) 9 蒸発器 17 冷媒液管 19 冷媒ガス管 23 液側ヘッダ 25 ガス側ヘッダ 27 直管 29 フィン 31 ドレンパン 33 撥水性フィルタ DESCRIPTION OF SYMBOLS 1 Heat transfer apparatus 5 Refrigerant-water heat exchanger (condenser) 9 Evaporator 17 Refrigerant liquid pipe 19 Refrigerant gas pipe 23 Liquid side header 25 Gas side header 27 Straight pipe 29 Fin 31 Drain pan 33 Water repellent filter

Claims (2)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 凝縮器、蒸発器を備え、これら凝縮器、
    蒸発器の間を冷媒液管、及び冷媒ガス管で接続し、自然
    循環サイクルを形成した熱移動装置において、 前記蒸発器は、冷媒液が流入する液側ヘッダと、冷媒ガ
    スが流出するガス側ヘッダと、これら両ヘッダを連結し
    てこの周囲に複数のフィンを有する複数の直管とを備
    え、 前記蒸発器の風下に通気性のある撥水性フィルタを設け
    たことを特徴とする熱移動装置。
    1. A condenser, comprising: a condenser and an evaporator;
    In a heat transfer apparatus in which a refrigerant liquid pipe and a refrigerant gas pipe are connected between evaporators to form a natural circulation cycle, the evaporator has a liquid-side header into which refrigerant liquid flows, and a gas-side header from which refrigerant gas flows out. A heat transfer device comprising: a header; a plurality of straight pipes connecting the headers to each other and having a plurality of fins around the header; and a permeable water-repellent filter provided downstream of the evaporator. .
  2. 【請求項2】 前記蒸発器及び前記撥水性フィルタの下
    方にドレンパンを設けたことを特徴とする請求項1に記
    載の熱移動装置。
    2. The heat transfer device according to claim 1, wherein a drain pan is provided below the evaporator and the water repellent filter.
JP2001143265A 2001-05-14 2001-05-14 Heat transfer device Pending JP2002333237A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Publications (1)

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ID=18989436

Family Applications (1)

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Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009197594A (en) * 2008-02-19 2009-09-03 Aisan Ind Co Ltd Dust filter
JP2011158135A (en) * 2010-01-29 2011-08-18 Gac Corp Air conditioning system
JP2018071967A (en) * 2012-07-09 2018-05-10 モーディーン・マニュファクチャリング・カンパニーModine Manufacturing Company Evaporator and method of conditioning air

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009197594A (en) * 2008-02-19 2009-09-03 Aisan Ind Co Ltd Dust filter
JP2011158135A (en) * 2010-01-29 2011-08-18 Gac Corp Air conditioning system
US8701429B2 (en) 2010-01-29 2014-04-22 Gac Corporation Air conditioning system
JP2018071967A (en) * 2012-07-09 2018-05-10 モーディーン・マニュファクチャリング・カンパニーModine Manufacturing Company Evaporator and method of conditioning air

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