JP2847218B2 - Evaporator - Google Patents
EvaporatorInfo
- Publication number
- JP2847218B2 JP2847218B2 JP2136092A JP13609290A JP2847218B2 JP 2847218 B2 JP2847218 B2 JP 2847218B2 JP 2136092 A JP2136092 A JP 2136092A JP 13609290 A JP13609290 A JP 13609290A JP 2847218 B2 JP2847218 B2 JP 2847218B2
- Authority
- JP
- Japan
- Prior art keywords
- evaporator
- header
- tubular
- flat tube
- outlet header
- 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.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
- F28D1/0478—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag the conduits having a non-circular cross-section
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0202—Header boxes having their inner space divided by partitions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2220/00—Closure means, e.g. end caps on header boxes or plugs on conduits
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 この発明は、例えばカーエアコンに用いられる蒸発器
に関する。Description: TECHNICAL FIELD The present invention relates to an evaporator used for, for example, a car air conditioner.
以下の説明において、「アルミニウム」という語に
は、純アルミニウムの他にアルミニウム合金を含むもの
とする。In the following description, the term “aluminum” includes an aluminum alloy in addition to pure aluminum.
従来の技術 従来、カーエアコンの蒸発器としては、第８図および
第９図に示すように、内部に複数の冷媒流通路（21）を
有するアルミニウム製蛇行状偏平管（20）と、蛇行状偏
平管（20）と隣り合う直管部（20a）どうしの間に配置
されたアルミニウム製コルゲートフィン（22）と、蛇行
状偏平管（20）の両側端の直管部（20a）の下端に接合
され、かつ一端が開口するとともに他端が閉鎖されたア
ルミニウム製円管状入口ヘッダ（23）および同出口ヘッ
ダ（24）と、入口ヘッダ（23）の開口端に接続された冷
媒入口側導管（25）と、出口ヘッダ（24）の開口端に接
続された冷媒出口側導管（26）とを備えており、冷媒入
口側導管（25）の途中に膨張弁（27）が設けられ、この
膨張弁（27）に接続された均圧管（28）の先端が冷媒出
口側導管（26）の周壁に接続されたものが用いられてい
た。この蒸発器において、出口ヘッダ（24）の他端閉鎖
壁（24a）の内面は、軸線と直交するようになされてい
た。2. Description of the Related Art Conventionally, as an evaporator of a car air conditioner, as shown in FIGS. 8 and 9, an aluminum meandering flat tube (20) having a plurality of refrigerant flow passages (21) therein, Aluminum corrugated fins (22) located between straight pipes (20a) adjacent to the flat pipe (20) and the lower ends of the straight pipe sections (20a) on both sides of the meandering flat pipe (20) An aluminum tubular inlet header (23) and an outlet header (24) that are joined and one end is open and the other end is closed, and a refrigerant inlet-side conduit connected to the open end of the inlet header (23) 25) and a refrigerant outlet side conduit (26) connected to the open end of the outlet header (24). An expansion valve (27) is provided in the middle of the refrigerant inlet side conduit (25). The end of the pressure equalizing pipe (28) connected to the valve (27) is on the peripheral wall of the refrigerant outlet conduit (26). Those that have been continued have been used. In this evaporator, the inner surface of the other end closing wall (24a) of the outlet header (24) is made to be orthogonal to the axis.
発明が解決しようとする課題 しかしながら、従来のカーエアコン用蒸発器では、冷
媒が偏平管（20）から出口ヘッダ（24）に流入するさい
に、甲高い笛が鳴るような異音（以下、笛音というもの
とする）が発生するという問題があった。However, in the conventional evaporator for a car air conditioner, when the refrigerant flows from the flat tube (20) into the outlet header (24), an abnormal sound (hereinafter referred to as a whistling sound) that makes a high pitched whistle sounds. ) Occurs.
従来の蒸発器において、笛音が発生する原因は、本発
明者が種々実験研究を重ねた結果、出口ヘッダ（24）に
流入する冷媒の圧力変動の定常波の周波数が、出口ヘッ
ダ（24）における気柱の固有振動数とほぼ一致し、出口
ヘッダ（24）内にて共鳴するからであることを見出だし
た。In the conventional evaporator, the cause of the whistling sound is that the frequency of the standing wave of the pressure fluctuation of the refrigerant flowing into the outlet header (24) is determined by the present inventors through various experimental studies. It was found that the resonance frequency almost coincided with the natural frequency of the air column and resonated in the outlet header (24).
この発明の目的は、上記問題を解決した蒸発器を提供
することにある。An object of the present invention is to provide an evaporator that solves the above problem.
課題を解決するための手段 この発明による第１の蒸発器は、蛇行状偏平管と、蛇
行状偏平管の両端に接合され、かつ一端が開口するとと
もに他端が閉鎖された管状ヘッダと、管状ヘッダの開口
端に接続された導管とを備えた蒸発器において、管状出
口ヘッダの他端閉鎖壁の内面に、内方突出部が設けら
れ、内方突出部の突出高さが２〜10mmとなされているも
のである。Means for Solving the Problems A first evaporator according to the present invention comprises a meandering flat tube, a tubular header joined to both ends of the meandering flat tube and having one end opened and the other end closed, In the evaporator provided with a conduit connected to the open end of the header, the inner surface of the other end closing wall of the tubular outlet header is provided with an inward protrusion, and the protrusion height of the inward protrusion is 2 to 10 mm. Is what is being done.
この発明による第２の蒸発器は、蛇行状偏平管と、蛇
行状偏平管の両端に接合され、かつ一端が開口するとと
もに他端が閉鎖された管状ヘッダと、管状ヘッダの開口
端に接続された導管とを備えた蒸発器において、管状出
口ヘッダの他端閉鎖壁の内面に、外方に向かって凹んだ
凹所が設けられ、凹所の深さが２〜10mmとなされている
ものである。A second evaporator according to the present invention includes a meandering flat tube, a tubular header joined to both ends of the meandering flat tube and having one end opened and the other end closed, and connected to an open end of the tubular header. An evaporator provided with a conduit, wherein a recess is formed on the inner surface of the other end closing wall of the tubular outlet header, the recess being outwardly recessed, and the depth of the recess is 2 to 10 mm. is there.
この発明による第３の蒸発器は、蛇行状偏平管と、蛇
行状偏平管の両端に接合され、かつ一端が開口するとと
もに他端が閉鎖された管状ヘッダと、管状ヘッダの開口
端に接続された導管とを備えた蒸発器において、管状出
口ヘッダの他端閉鎖壁の内面が軸線に対して傾斜させら
れ、この傾斜内面と軸線とが交わる部分と、傾斜内面の
外端部との距離が２〜10mmとなされているものである。A third evaporator according to the present invention includes a meandering flat tube, a tubular header joined to both ends of the meandering flat tube and having one end opened and the other end closed, and connected to an open end of the tubular header. The inner surface of the other end closing wall of the tubular outlet header is inclined with respect to the axis, and the distance between the intersection of the inclined inner surface and the axis and the outer end of the inclined inner surface is increased. It is 2 to 10 mm.
作用 上記３つの蒸発器によれば、出口ヘッダ内において
は、出口ヘッダの閉鎖壁内面からの反射波が不規則とな
り、この反射波と閉鎖壁内面への入射波との干渉により
定常波が発生することはなく、出口ヘッダの気柱の固有
振動数と共鳴しないと推定される。しかしながら、上記
第１の発明における内方突出部の突出高さが2mm未満、
上記第２の発明における凹所の深さが2mm未満、上記第
３の発明における傾斜内面と軸線とが交わる部分と、傾
斜内面の外端部との距離が2mm未満であれば、上記効果
が得られず、それぞれの寸法が10mmを越えると、ヘッダ
内のむだなスペースが大きくなる。したがって、上記各
寸法は２〜10mmの範囲内で選ぶべきである。According to the above three evaporators, the reflected wave from the inner surface of the closing wall of the outlet header becomes irregular in the outlet header, and a standing wave is generated by the interference between the reflected wave and the incident wave on the inner surface of the closing wall. It is presumed that it does not resonate with the natural frequency of the air column of the outlet header. However, the protrusion height of the inward protrusion in the first invention is less than 2 mm,
If the depth of the recess in the second invention is less than 2 mm, and the distance between the portion where the inclined inner surface and the axis intersect in the third invention and the outer end of the inclined inner surface is less than 2 mm, the above effect is obtained. If they cannot be obtained and each dimension exceeds 10 mm, the wasted space in the header becomes large. Therefore, each of the above dimensions should be selected within the range of 2 to 10 mm.
実 施 例 以下、この発明の実施例を、図面を参照して説明す
る。以下の説明において、第８図および第９図に示すも
のと同一部分および同一物には同一符号を付して説明を
省略する。Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same portions and the same components as those shown in FIGS. 8 and 9 are denoted by the same reference numerals, and description thereof will be omitted.
実施例１ この実施例は第１図に示すものである。第１図におい
て、蒸発器の出口ヘッダ（１）の閉鎖壁（1a）の中央部
は内方に突出するように変形させられており、これによ
り閉鎖壁（1a）の内面に、突出高さ（H1）が２〜10mmで
ある内方突出部（２）が設けられている。他の構成は従
来例と同一である。Embodiment 1 This embodiment is shown in FIG. In FIG. 1, the central portion of the closing wall (1a) of the outlet header (1) of the evaporator is deformed so as to protrude inward, so that the inner surface of the closing wall (1a) has a protruding height. An inwardly protruding portion (2) having (H1) of 2 to 10 mm is provided. The other configuration is the same as the conventional example.
実施例２ この実施例は第２図に示すものである。第２図におい
て、蒸発器の出口ヘッダ（４）の閉鎖壁（4a）の内面
に、突出高さ（H2）が２〜10mmである軸線と平行な板状
内方突出部（５）が設けられている。他の構成は従来例
と同一である。Embodiment 2 This embodiment is shown in FIG. In FIG. 2, a plate-like inward protrusion (5) parallel to the axis having a protrusion height (H2) of 2 to 10 mm is provided on the inner surface of the closing wall (4a) of the outlet header (4) of the evaporator. Have been. The other configuration is the same as the conventional example.
実施例３ この実施例は第３図に示すものである。第３図におい
て、蒸発器の出口ヘッダ（７）の閉鎖壁（7a）の中央部
は外方に突出するように変形させられており、これによ
り閉鎖壁（7a）の内面には、深さ（Ｄ）が２〜10mmであ
る外方に凹んだ凹所（８）が設けられている。他の構成
は従来例と同一である。Embodiment 3 This embodiment is shown in FIG. In FIG. 3, the central part of the closing wall (7a) of the outlet header (7) of the evaporator is deformed so as to protrude outward, so that the inner surface of the closing wall (7a) has a depth. An outwardly concave recess (8) having (D) 2 to 10 mm is provided. The other configuration is the same as the conventional example.
実施例４ この実施例は第４図に示すものである。第４図におい
て、蒸発器の出口ヘッダ（９）の閉鎖壁（9a）は軸線
（Ａ）に対して傾斜しており、その内面も軸線（Ａ）に
対して傾斜した傾斜面となされている。この傾斜閉鎖壁
（9a）の内面および軸線（Ａ）が交わる部分と、傾斜内
面の外端部との距離（Ｌ）が２〜10mmとなされている。
他の構成は従来例と同一である。Embodiment 4 This embodiment is shown in FIG. In FIG. 4, the closing wall (9a) of the outlet header (9) of the evaporator is inclined with respect to the axis (A), and the inner surface thereof is also inclined with respect to the axis (A). . The distance (L) between the intersection of the inner surface of the inclined closing wall (9a) and the axis (A) and the outer end of the inclined inner surface is 2 to 10 mm.
The other configuration is the same as the conventional example.
次に、実施例１、３および４の各蒸発器、ならびに従
来例の蒸発器を用いて行った実験について述べる。Next, experiments performed using the evaporators of Examples 1, 3 and 4, and the conventional evaporator will be described.
各蒸発器の出口ヘッダ（１）（７）（９）（24）の周
壁の中央部分および閉鎖端寄りの部分に、第８図に示す
ように、それぞれ圧力センサ（P1）（P2）を取付けてお
き、これらの蒸発器を自動車用カーエアコンに組み込ん
だ。冷媒としてはフレオン12を、適正量用いた。この自
動車に、実験室内で日照負荷装置によって1kW/m2の日照
を負荷し、車室内温度が35〜40℃となるようにした。そ
の後、カーエアコンのスイッチをオンとした。そして、
自動車のエンジンの回転数を2000rpmに保ちながら、笛
音が発生したか、否かを調べた。その結果、実施例１、
３および４の蒸発器では笛音は発生せず、従来例の蒸発
器では笛音が発生した。As shown in FIG. 8, pressure sensors (P1) and (P2) are attached to the center part of the peripheral wall of the outlet header (1) (7) (9) (24) of each evaporator and the part near the closed end, respectively, as shown in FIG. In advance, these evaporators were incorporated into a car air conditioner. An appropriate amount of Freon 12 was used as a refrigerant. The vehicle was loaded with 1 kW / m 2 of sunshine in a laboratory by means of a sunshine load device so that the temperature inside the vehicle was 35 to 40 ° C. Then, the car air conditioner was turned on. And
While maintaining the engine speed of the car at 2000 rpm, it was examined whether or not whistling sound was generated. As a result, Example 1,
No whistling sound was generated in the evaporators 3 and 4, while a whistling sound was generated in the conventional evaporator.
また、圧力センサに（P1）（P2）よりカーエアコン作
動時の出口ヘッダ（１）（７）（９）（24）内の圧力を
測定し、その測定値に基いて高速フーリエ変換アナライ
ザにより、圧力変動の周波数を、０〜5000Hzの範囲内で
求めた。一方、このときに発生した音の強さのレベルを
測定した。なお、カーエアコン作動時の条件は次の通り
である。In addition, the pressure sensor measures the pressure in the outlet header (1) (7) (9) (24) when the car air conditioner is activated from (P1) (P2), and based on the measured value, a fast Fourier transform analyzer is used. The frequency of pressure fluctuation was determined within the range of 0 to 5000 Hz. On the other hand, the level of the intensity of the sound generated at this time was measured. The conditions for operating the car air conditioner are as follows.
通風量 465m3 入口側空気の乾球温度 34℃ 入口側空気の湿球温度 22℃ 出口側空気の乾球温度 14℃ 出口側空気の湿球温度 11℃ 通風抵抗 9.2mmAq 膨張弁直前冷媒温度 46℃ 膨張弁直前冷媒圧力 10.30kg/cm2G SC（過冷度） 0.77deg 蒸発器出口の冷媒温度 17℃ 蒸発器出口の冷媒圧力 1.6kg/cm2G SH（過熱度） 23.1deg 冷媒流量 251kg/h 冷房性能 4210kcal/h 実施例１の蒸発器における周波数と音の強さのレベル
との関係を第５図に、実施例３の蒸発器における上記関
係を第６図に、実施例４の蒸発器における上記関係を第
７図に、従来例の蒸発器における上記関係を第10図にそ
れぞれ示す。第５図〜第７図および第10図において、そ
れぞれ（Ａ）は出口ヘッダの中央部分に取付けられた圧
力センサ（P1）で圧力変動を測定したものであり、
（Ｂ）は同じく閉鎖端寄りの部分に取付けられた圧力セ
ンサ（P2）で圧力変動を測定したものである。なお、各
図の（Ａ）および（Ｂ）の結果は同時に測定した。Ventilation volume 465m 3 Dry-bulb temperature of inlet-side air 34 ° C Wet-bulb temperature of inlet-side air 22 ° C Dry-bulb temperature of outlet-side air 14 ° C Wet-bulb temperature of outlet-side air 11 ° C Ventilation resistance 9.2mmAq Refrigerant temperature immediately before expansion valve 46 ° C. expansion valve immediately before refrigerant pressure 10.30kg / cm 2 G SC (Kahiyado) refrigerant pressure of the refrigerant temperature 17 ° C. evaporator outlet of 0.77deg evaporator outlet 1.6kg / cm 2 G SH (superheat) 23.1Deg refrigerant flow rate 251kg / h Cooling performance 4210 kcal / h FIG. 5 shows the relationship between the frequency and the sound intensity level in the evaporator of the first embodiment, FIG. 6 shows the above relationship in the evaporator of the third embodiment, and FIG. FIG. 7 shows the above relationship in the evaporator, and FIG. 10 shows the above relationship in the conventional evaporator. FIGS. 5 to 7 and 10 each show (A) pressure fluctuations measured by a pressure sensor (P1) attached to the center of the outlet header.
(B) is a result of measuring a pressure fluctuation by a pressure sensor (P2) similarly attached to a portion near the closed end. The results of (A) and (B) in each figure were measured simultaneously.
これらの図面から明らかなように、実施例１、３およ
び４の蒸発器においては、０〜5000Hzの範囲の全域にお
いて音の強さのレベルが一定であった。また、従来例の
蒸発器においては、両圧力センサ（P1）（P2）のいずれ
で測定した場合にも、ともに1800HZおよび4137Hzに音の
強さのピークが現れており、これらのピークが笛音の原
因となっていると考えられる。As is apparent from these drawings, in the evaporators of Examples 1, 3 and 4, the level of the sound intensity was constant over the entire range of 0 to 5000 Hz. In addition, in the conventional evaporator, the peaks of the sound intensity appear at 1800 Hz and 4137 Hz in both the pressure sensors (P1) and (P2), respectively, and these peaks are flute sounds. Is considered to be the cause.
上記実施例１および２では、内方突出部の数は１つで
あるが、これに限るものではなく、複数であってもよ
い。また、上記実施例３では、凹所の数は１つである
が、これに限るものではなく、複数であってもよい。In the first and second embodiments, the number of the inwardly protruding portions is one, but the number is not limited to this and may be plural. Further, in the third embodiment, the number of the recesses is one, but the number is not limited thereto, and the number may be plural.
発明の効果 この発明の蒸発器によれば、上述のように、出口ヘッ
ダに流入する冷媒の圧力変動の定常波が発生することは
なく、出口ヘッダの気柱の固有振動数と共鳴しないと推
定されるので、笛音の発生を防止できる。According to the evaporator of the present invention, as described above, it is estimated that a standing wave of the pressure fluctuation of the refrigerant flowing into the outlet header does not occur and does not resonate with the natural frequency of the air column of the outlet header. Therefore, generation of a whistle sound can be prevented.
第１図はこの発明による蒸発器の実施例１を示す出口ヘ
ッダ部分の拡大断面図、第２図はこの発明による蒸発器
の実施例２を示す出口ヘッダ部分の拡大断面図、第３図
はこの発明による蒸発器の実施例３を示す出口ヘッダ部
分の拡大断面図、第４図はこの発明による蒸発器の実施
例４を示す出口ヘッダ部分の拡大断面図、第５図は実施
例１の蒸発器を組み込んだカーエアコンの作動時の圧力
変動の周波数と音のレベルとの関係を示す図、第６図は
実施例３の蒸発器を組み込んだカーエアコンの作動時の
圧力変動の周波数と音のレベルとの関係を示す図、第７
図は実施例４の蒸発器を組み込んだカーエアコンの作動
時の圧力変動の周波数と音のレベルとの関係を示す図、
第８図は従来の蒸発器を示す斜視図、第９図は従来の蒸
発器の出口ヘッダ部分の拡大断面図、第10図は従来の蒸
発器を組み込んだカーエアコンの作動時の圧力変動の周
波数と音のレベルとの関係を示す図である。 （１）（４）（７）（９）……出口ヘッダ、（1a）（4
a）（7a）（9a）……閉鎖壁、（３）（５）……内方突
出部、（８）……凹所、（20）……蛇行状偏平管、（2
6）……冷媒出口側導管。FIG. 1 is an enlarged sectional view of an outlet header part showing an evaporator according to a first embodiment of the present invention, FIG. 2 is an enlarged sectional view of an outlet header part showing a second embodiment of the evaporator according to the present invention, and FIG. FIG. 4 is an enlarged sectional view of an outlet header part showing an evaporator according to a third embodiment of the present invention, FIG. 4 is an enlarged sectional view of an outlet header part showing a fourth embodiment of the evaporator according to the present invention, and FIG. FIG. 6 shows the relationship between the frequency of pressure fluctuation and the sound level during operation of a car air conditioner incorporating an evaporator, and FIG. 6 shows the frequency and frequency of pressure fluctuation during operation of a car air conditioner incorporating an evaporator according to the third embodiment. The figure which shows the relationship with a sound level, 7th
The figure shows the relationship between the frequency of the pressure fluctuation and the sound level during the operation of the car air conditioner incorporating the evaporator of Embodiment 4,
FIG. 8 is a perspective view showing a conventional evaporator, FIG. 9 is an enlarged sectional view of an outlet header portion of the conventional evaporator, and FIG. 10 is a graph showing pressure fluctuation during operation of a car air conditioner incorporating the conventional evaporator. It is a figure showing the relation between frequency and sound level. (1) (4) (7) (9) ... Exit header, (1a) (4
a) (7a) (9a) ... closed wall, (3) (5) ... inward projection, (8) ... recess, (20) ... meandering flat tube, (2
6)… refrigerant outlet side conduit.
Claims (3)
合され、かつ一端が開口するとともに他端が閉鎖された
管状ヘッダと、管状ヘッダの開口端に接続された導管と
を備えた蒸発器において、管状出口ヘッダの他端閉鎖壁
の内面に、内方突出部が設けられ、内方突出部の突出高
さが２〜10mmとなされている蒸発器。1. A meandering flat tube, a tubular header joined to both ends of the meandering flat tube and having one end opened and the other end closed, and a conduit connected to an open end of the tubular header. The evaporator according to claim 1, wherein an inner protruding portion is provided on the inner surface of the other end closing wall of the tubular outlet header, and the protruding height of the inner protruding portion is 2 to 10 mm.
合され、かつ一端が開口するとともに他端が閉鎖された
管状ヘッダと、管状ヘッダの開口端に接続された導管と
を備えた蒸発器において、管状出口ヘッダの他端閉鎖壁
の内面に、外方に向かって凹んだ凹所が設けられ、凹所
の深さが２〜10mmとなされている蒸発器。2. A meandering flat tube, a tubular header joined to both ends of the meandering flat tube and open at one end and closed at the other end, and a conduit connected to an open end of the tubular header. The evaporator according to claim 1, wherein a concave portion is provided on an inner surface of a closed wall at the other end of the tubular outlet header, the concave portion being outwardly concave, and the depth of the concave portion is 2 to 10 mm.
合され、かつ一端が開口するとともに他端が閉鎖された
管状ヘッダと、管状ヘッダの開口端に接続された導管と
を備えた蒸発器において、管状出口ヘッダの他端閉鎖壁
の内面が軸線に対して傾斜させられ、この傾斜内面と軸
線とが交わる部分と、傾斜内面の外端部との距離が２〜
10mmとなされている蒸発器。3. A meandering flat tube, a tubular header joined to both ends of the meandering flat tube and open at one end and closed at the other end, and a conduit connected to an open end of the tubular header. In the evaporator, the inner surface of the other end closing wall of the tubular outlet header is inclined with respect to the axis, and the distance between the intersection of the inclined inner surface and the axis and the outer end of the inclined inner surface is 2 to 2.
Evaporator made with 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2136092A JP2847218B2 (en) | 1990-05-25 | 1990-05-25 | Evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2136092A JP2847218B2 (en) | 1990-05-25 | 1990-05-25 | Evaporator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0432671A JPH0432671A (en) | 1992-02-04 |
| JP2847218B2 true JP2847218B2 (en) | 1999-01-13 |
Family
ID=15167075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2136092A Expired - Lifetime JP2847218B2 (en) | 1990-05-25 | 1990-05-25 | Evaporator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2847218B2 (en) |
-
1990
- 1990-05-25 JP JP2136092A patent/JP2847218B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0432671A (en) | 1992-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0947792B1 (en) | Refrigerant evaporator and manufacturing method for the same | |
| JP4628380B2 (en) | Air conditioner | |
| US8408284B2 (en) | Heat exchanger assembly | |
| US20060231241A1 (en) | Evaporator with aerodynamic first dimples to suppress whistling noise | |
| US6397934B2 (en) | Cooling device boiling and condensing refrigerant | |
| JP2004286246A (en) | Parallel flow heat exchanger for heat pump | |
| JP2847218B2 (en) | Evaporator | |
| US5970741A (en) | Refrigerant separator and air conditioner mounting the refrigerant separator | |
| JPH0328273Y2 (en) | ||
| JPH0395394A (en) | Heat exchanger | |
| JP2003343942A (en) | Evaporator | |
| JP3199496B2 (en) | Automotive air conditioner capacitors | |
| Rodarte et al. | Acoustic resonance in plate heat exchangers: Résonance acoustique des échangeurs de chaleur à plaques | |
| CN206208075U (en) | Self-supporting spiral baffle heat exchanger | |
| JPH07103609A (en) | Heat exchanger for freezing cycle | |
| JP2000257992A (en) | Connecting structure for liquid receiver | |
| JPH0979770A (en) | Heat exchanger and its preparation | |
| JPS5933965Y2 (en) | air conditioner | |
| KR100822526B1 (en) | Heater core | |
| JP2001207493A (en) | Anti freezing piping structure | |
| JPH08233475A (en) | Radiator | |
| JPS6250743B2 (en) | ||
| JPS603146B2 (en) | Evaporator | |
| JPH0416128Y2 (en) | ||
| JPS5938596A (en) | Heat exchanger |