JPH07180930A - Liquid receiver integrated type refrigerant condenser - Google Patents
Liquid receiver integrated type refrigerant condenserInfo
- Publication number
- JPH07180930A JPH07180930A JP22543294A JP22543294A JPH07180930A JP H07180930 A JPH07180930 A JP H07180930A JP 22543294 A JP22543294 A JP 22543294A JP 22543294 A JP22543294 A JP 22543294A JP H07180930 A JPH07180930 A JP H07180930A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- liquid
- gas
- supercooling
- liquid receiving
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/044—Condensers with an integrated receiver
- F25B2339/0441—Condensers with an integrated receiver containing a drier or a filter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/16—Receivers
- F25B2400/162—Receivers characterised by the plug or stop
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/02—Subcoolers
Landscapes
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、例えば冷媒循環量が
変動可能な車両用空気調和装置に用いられる受液器一体
型冷媒凝縮器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid receiver integrated refrigerant condenser used in a vehicle air conditioner in which the refrigerant circulation amount can be varied.
【０００２】[0002]
【従来の技術】従来より、車両用空気調和装置の冷凍サ
イクルの受液器と凝縮器とは別個独立して配置されてい
る。そのため、部品点数の低減即ちコスト低減が困難で
あり、また受液器と凝縮器とで互いに取付スペースを占
めるため、省スペースの要望に応えることができないと
いう不具合があった。そこで、その不具合を解消する目
的で、米国特許第４９７２６８３号公報に開示された技
術や実開平２−１０３６６７号公報に開示された技術が
提案されている。2. Description of the Related Art Conventionally, a liquid receiver and a condenser of a refrigeration cycle of an air conditioner for a vehicle are separately arranged. Therefore, it is difficult to reduce the number of parts, that is, the cost is reduced. Further, since the receiver and the condenser occupy the mounting space, the demand for space saving cannot be met. Therefore, for the purpose of solving the problem, the technique disclosed in U.S. Pat. No. 4,972,683 and the technique disclosed in U.S. Pat. No. 2,103,671 are proposed.
【０００３】先ず、米国特許第４９７２６８３号公報に
開示された技術は、冷媒凝縮器の片側ヘッダ内の気液分
離室の断面積を大きくして冷媒の流速を落とすことによ
り気相冷媒の浮力を利用して気液分離させるものであっ
た。次に、実開平２−１０３６６７号公報に開示された
技術は、冷媒凝縮器の出口側ヘッダの内部を２部屋に区
画する仕切り部材に２部屋を連通するための貫通路を設
け、出口側ヘッダの片側の部屋を気液分離室として用い
るものであった。First, in the technique disclosed in US Pat. No. 4,972,683, the buoyancy of the vapor-phase refrigerant is reduced by increasing the cross-sectional area of the gas-liquid separation chamber in the header on one side of the refrigerant condenser to reduce the flow velocity of the refrigerant. It was used for gas-liquid separation. Next, in the technique disclosed in Japanese Utility Model Laid-Open No. 2-103667, a partition member that divides the inside of the outlet side header of the refrigerant condenser into two chambers is provided with a through passage for communicating the two chambers, and the outlet side header is provided. One of the chambers was used as a gas-liquid separation chamber.
【０００４】[0004]
【発明が解決しようとする課題】ところが、米国特許第
４９７２６８３号公報に開示された技術においては、凝
縮用チューブの流路径が微細で、しかも数多く気液二相
状態の冷媒を吹き出す。このために、凝縮用チューブか
ら出る気泡状の気相冷媒が小さいので、浮力の効果が期
待できず、容易に気相冷媒を気液分離室より下流へ送り
出してしまう。したがって、冷媒凝縮器より下流側に接
続された温度作動式膨張弁で流動音が発生する等の問題
が発生してしまう。However, in the technique disclosed in US Pat. No. 4,972,683, a condenser tube has a minute flow path diameter and a large number of gas-liquid two-phase refrigerant is blown out. For this reason, since the bubble-shaped vapor-phase refrigerant that emerges from the condensation tube is small, the effect of buoyancy cannot be expected, and the vapor-phase refrigerant is easily sent downstream from the gas-liquid separation chamber. Therefore, there arises a problem that a flow noise is generated in the temperature-operated expansion valve connected on the downstream side of the refrigerant condenser.
【０００５】そこで、温度作動式膨張弁に気相冷媒が送
り込まれないようにするために、凝縮部と過冷却部を上
下に配した冷媒凝縮器も考えられるが、この冷媒凝縮器
の場合でも気液分離室へ冷媒を導く凝縮用チューブのう
ちの最下部の凝縮用チューブと気液分離室から液相冷媒
のみを送り出すための過冷却用チューブのうちの最上部
の過冷却用チューブとの距離が接近する。このため、容
易に気相冷媒を気液分離室より下流側の過冷却部へ送り
出し易く、過冷却部が有効に働かない。Therefore, in order to prevent the gas-phase refrigerant from being sent to the temperature-operated expansion valve, a refrigerant condenser having a condenser section and a supercooling section arranged vertically is conceivable, but even in the case of this refrigerant condenser, Of the condensation tube at the bottom of the condensation tubes that guide the refrigerant to the gas-liquid separation chamber and the top supercooling tube of the supercooling tubes for sending out only the liquid-phase refrigerant from the gas-liquid separation chamber The distance approaches. Therefore, the gas-phase refrigerant is easily sent to the supercooling section on the downstream side of the gas-liquid separation chamber, and the supercooling section does not work effectively.
【０００６】また、実開平２−１０３６６７号公報に開
示された技術において、気液分離室内への冷媒流入口が
気液分離室の上部にある場合は、特に冷媒圧縮機を高速
運転した時のように冷媒循環量が大きい場合は、気液分
離室内の断面積がかなり大きくないと、気液分離室内で
気液界面ができない。したがって、気液分離室の下流側
へ気相冷媒を送り出すことになる。Further, in the technique disclosed in Japanese Utility Model Laid-Open No. 10363/1990, when the refrigerant inlet into the gas-liquid separation chamber is located above the gas-liquid separation chamber, especially when the refrigerant compressor is operated at high speed. As described above, when the refrigerant circulation amount is large, the gas-liquid interface cannot be formed in the gas-liquid separation chamber unless the cross-sectional area in the gas-liquid separation chamber is considerably large. Therefore, the gas-phase refrigerant is sent to the downstream side of the gas-liquid separation chamber.
【０００７】そして、気液分離室内への冷媒流入口が気
液分離室の下部（但し気液分離室内からの冷媒流出口よ
りも上方）にある場合は、気液分離室の冷媒流入口と冷
媒流出口の距離が近く、また気液分離室の冷媒流入口か
ら冷媒流出口への冷媒の流れのベクトル方向が同じであ
る。このため、気液分離室の下流側へ容易に気相冷媒を
送り出してしまうため、前述の問題が発生する。If the refrigerant inlet into the gas-liquid separation chamber is located below the gas-liquid separation chamber (however, above the refrigerant outlet from the gas-liquid separation chamber), the refrigerant inlet into the gas-liquid separation chamber The refrigerant outlets are close in distance, and the vector directions of the refrigerant flow from the refrigerant inlet to the refrigerant outlet of the gas-liquid separation chamber are the same. For this reason, the gas-phase refrigerant is easily sent to the downstream side of the gas-liquid separation chamber, and the above-mentioned problem occurs.
【０００８】この発明の目的は、仮に凝縮部の最下部と
過冷却部の最上部とが接近していても、受液部の気液分
離室内での冷媒の気液分離性を維持し、且つ受液部の気
液分離室より下流の過冷却部へ簡単に気相冷媒が流出し
ないようにすることが可能な受液器一体型冷媒凝縮器を
提供することにある。An object of the present invention is to maintain the gas-liquid separability of the refrigerant in the gas-liquid separation chamber of the liquid receiving section even if the lowermost part of the condensing part and the uppermost part of the supercooling part are close to each other, Another object of the present invention is to provide a liquid-receiver-integrated refrigerant condenser that can easily prevent the vapor-phase refrigerant from flowing out to the supercooling unit downstream of the gas-liquid separation chamber of the liquid receiving unit.
【０００９】[0009]
【課題を解決するための手段】この発明は、内部を流れ
る冷媒を凝縮する凝縮部、およびこの凝縮部で凝縮され
た冷媒を過冷却する過冷却部を上下に配設したコアと、
このコアの一端部において上下方向に延ばされ、上側部
に前記凝縮部の下流端が接続され、下側部に前記過冷却
部の上流端が接続され、内部を、前記凝縮部の下流端の
みに連通する上流側連通室と前記過冷却部の上流端のみ
に連通する下流側連通室とに区画する第１仕切り部を有
するタンク部と、内部に、流入した冷媒を気液分離する
気液分離室を有し、且つこの気液分離室と前記上流側連
通室および前記下流側連通室とを仕切る第２仕切り部を
有する受液部とを備えた受液器一体型冷媒凝縮器であっ
て、前記第２仕切り部は、前記上流側連通室の下部で開
口し、前記上流側連通室より前記気液分離室内へ冷媒を
流入させる冷媒流入口、およびこの冷媒流入口より下方
で開口し、前記気液分離室より前記下流側連通室内へ冷
媒を流出させる冷媒流出口を有する技術手段を採用し
た。According to the present invention, there is provided a condensing section for condensing a refrigerant flowing inside, and a core having a supercooling section for supercooling the refrigerant condensed in the condensing section arranged vertically.
One end of this core is extended in the vertical direction, the upper end is connected to the downstream end of the condensing unit, the lower end is connected to the upstream end of the supercooling unit, and the inside is the downstream end of the condensing unit. And a tank part having a first partition part which is divided into an upstream communication chamber that communicates only with the downstream communication chamber that communicates only with the upstream end of the supercooling part, and a gas that separates the inflowing refrigerant into gas and liquid. A liquid receiver integrated refrigerant condenser having a liquid separation chamber and a liquid receiving part having a second partitioning part for partitioning the gas-liquid separation chamber from the upstream communication chamber and the downstream communication chamber. Then, the second partition portion opens at a lower portion of the upstream communication chamber, a refrigerant inlet for allowing a refrigerant to flow from the upstream communication chamber into the gas-liquid separation chamber, and an opening below the refrigerant inlet. Cooling the refrigerant from the gas-liquid separation chamber to the downstream communication chamber. It was adopted technical means having an outlet.
【００１０】なお、前記受液部を、前記タンク部に一体
成形しても良い。また、前記受液部を、前記ヘッダに間
接的または直接的に接続しても良い。さらに、過冷却部
よりも下流に、冷媒の状態を観察するためのサイトグラ
スを接続しても良い。そして、気液分離室内の上部に、
冷媒中の水分を取り除くドライヤを設けても良い。The liquid receiving portion may be integrally formed with the tank portion. Further, the liquid receiving portion may be connected to the header indirectly or directly. Further, a sight glass for observing the state of the refrigerant may be connected downstream of the supercooling section. And, in the upper part of the gas-liquid separation chamber,
You may provide the dryer which removes the water | moisture content in a refrigerant.
【００１１】[0011]
【作用】この発明によれば、凝縮部より流出した気液二
相状態の冷媒をタンク部の上流側連通室内に一旦集め、
その後に受液部の第２仕切り部の冷媒流入口を介して受
液部の気液分離室内へ送り出すようにしている。これに
より、凝縮部より出る細かい気泡状の気相冷媒がタンク
部の上流側連通室で集められて径の大きい気泡状の気相
冷媒となって浮力の影響を大きく受けるようになり、受
液部の気液分離室内で気液分離し易くなる。また、タン
ク部の第１仕切り部により、第２仕切り部の冷媒流入口
から気液分離室を通って第２仕切り部の冷媒流出口まで
の冷媒の流れがＵターン流れとなっているので、気液が
遠心力により分離し気泡状の気相冷媒がより集まること
で気泡状の気相冷媒の径がより大きくなり、浮力の影響
を大きく受けて気液分離がよりし易くなる。According to the present invention, the gas-liquid two-phase refrigerant flowing out from the condenser is temporarily collected in the upstream communication chamber of the tank,
After that, it is sent out into the gas-liquid separation chamber of the liquid receiving portion via the refrigerant inlet of the second partitioning portion of the liquid receiving portion. As a result, the fine bubble-like gas-phase refrigerant that comes out of the condensing part is collected in the upstream communication chamber of the tank part, becomes a bubble-like gas-phase refrigerant with a large diameter, and is greatly affected by buoyancy. It becomes easy to separate gas and liquid in the gas-liquid separation chamber of the part. In addition, since the first partition of the tank section makes a U-turn flow of the refrigerant from the refrigerant inlet of the second partition through the gas-liquid separation chamber to the refrigerant outlet of the second partition, The gas-liquid is separated by the centrifugal force and the bubble-like gas-phase refrigerant is further gathered, so that the diameter of the bubble-like gas-phase refrigerant becomes larger, and the influence of the buoyancy is greatly exerted to facilitate the gas-liquid separation.
【００１２】そして、仮に凝縮部の最下部と過冷却部の
最上部とが接近していても、タンク部の第１仕切り部に
より凝縮部の下流端から過冷却部の上流端までの流路長
さが長くなり、気液分離室から過冷却部へ分離できてい
ない気泡状の気相冷媒を送り出すことがなくなる。そし
て、受液部の気液分離室の下流側に過冷却部が設けられ
ているため、気液分離室での気液分離が完全でなくて
も、過冷却部にて気泡状の気相冷媒は消滅するので、気
液分離室の容積、つまり気液分離室の断面積を小さくす
ることが可能となり、凝縮部と過冷却部の有効放熱面積
が小さくならない。Even if the lowermost part of the condensing part and the uppermost part of the supercooling part are close to each other, the first partitioning part of the tank part allows the flow path from the downstream end of the condensing part to the upstream end of the supercooling part. The length becomes longer, and the bubble-like vapor phase refrigerant that has not been separated from the gas-liquid separation chamber to the supercooling section is not sent out. Since the supercooling unit is provided on the downstream side of the gas-liquid separation chamber of the liquid receiving unit, even if the gas-liquid separation in the gas-liquid separation chamber is not complete, a bubble-like gas phase is generated in the supercooling unit. Since the refrigerant disappears, it is possible to reduce the volume of the gas-liquid separation chamber, that is, the cross-sectional area of the gas-liquid separation chamber, and the effective heat radiation area of the condenser section and the supercooling section does not decrease.
【００１３】[0013]
【実施例】次に、この発明の受液器一体型冷媒凝縮器を
自動車用空気調和装置に適用した実施例に基づいて説明
する。Next, a description will be given of an embodiment in which the liquid receiver integrated refrigerant condenser of the present invention is applied to an automobile air conditioner.
【００１４】〔第１実施例の構成〕図１ないし図４はこ
の発明の第１実施例を示したもので、図１は自動車用空
気調和装置の冷凍サイクルを示した図である。この自動
車用空気調和装置の冷凍サイクル１は、冷媒圧縮機２、
受液器一体型冷媒凝縮器３、サイトグラス４、膨張弁５
および冷媒蒸発器６を、金属製パイプまたはゴム製パイ
プよりなる冷媒配管７によって順次接続されている。[Structure of First Embodiment] FIGS. 1 to 4 show a first embodiment of the present invention, and FIG. 1 is a view showing a refrigeration cycle of an automobile air conditioner. The refrigeration cycle 1 of this automobile air conditioner includes a refrigerant compressor 2,
Liquid receiver integrated refrigerant condenser 3, sight glass 4, expansion valve 5
The refrigerant evaporator 6 is sequentially connected by a refrigerant pipe 7 made of a metal pipe or a rubber pipe.
【００１５】冷媒圧縮機２は、自動車のエンジンルーム
（図示せず）内に設置されたエンジンＥにベルト（図示
せず）と電磁クラッチ（図示せず）を介して連結されて
いる。この冷媒圧縮機２は、エンジンＥの回転動力が伝
達されると、冷媒蒸発器６より内部に吸入した気相冷媒
を圧縮して、高温高圧の気相冷媒を受液器一体型冷媒凝
縮器３へ吐出する。The refrigerant compressor 2 is connected to an engine E installed in an engine room (not shown) of an automobile through a belt (not shown) and an electromagnetic clutch (not shown). When the rotational power of the engine E is transmitted, the refrigerant compressor 2 compresses the gas-phase refrigerant sucked inside from the refrigerant evaporator 6 to transfer the high-temperature and high-pressure gas-phase refrigerant to the receiver-integrated refrigerant condenser. Discharge to 3.
【００１６】受液器一体型冷媒凝縮器３は、凝縮部８、
受液部９および過冷却部１０を一体的に設けている。凝
縮部８は、冷媒圧縮機２の吐出側に接続され、冷媒圧縮
機２より内部に流入した気相冷媒をクーリングファン
（図示せず）等により送られてくる室外空気と熱交換さ
せて冷媒を凝縮液化させる凝縮器として働く。The receiver-integrated refrigerant condenser 3 includes a condenser section 8,
The liquid receiving section 9 and the supercooling section 10 are integrally provided. The condenser 8 is connected to the discharge side of the refrigerant compressor 2 and causes the gas-phase refrigerant flowing into the refrigerant compressor 2 to exchange heat with the outdoor air sent by a cooling fan (not shown) or the like. Acts as a condenser for condensing and liquefying.
【００１７】受液部９は、凝縮部８より内部に流入した
気液二相状態の冷媒を気相冷媒と液相冷媒とに気液分離
して、液相冷媒のみ過冷却部１０に供給する受液器とし
て働く。過冷却部１０は、凝縮部８より下方に隣接して
設けられ、受液部９より内部に流入した液相冷媒をクー
リングファン等により送られてくる室外空気と熱交換さ
せて液相冷媒を過冷却する過冷却器として働く。The liquid receiving section 9 separates the gas-liquid two-phase refrigerant flowing into the condenser section 8 into a gas-phase refrigerant and a liquid-phase refrigerant, and supplies only the liquid-phase refrigerant to the subcooling section 10. Acts as a receiver. The subcooling unit 10 is provided below the condensing unit 8 so as to be adjacent thereto, and heat-exchanges the liquid-phase refrigerant flowing into the liquid-receiving unit 9 with the outdoor air sent by a cooling fan or the like to generate the liquid-phase refrigerant. It works as a supercooler to supercool.
【００１８】サイトグラス４は、受液器一体型冷媒凝縮
器３の過冷却部１０より下流側に接続され、冷凍サイク
ル１内を循環する冷媒の状態を観察するものである。こ
のサイトグラス４は、自動車のエンジンルーム内におい
て点検者が視認し易い場所、例えば受液器一体型冷媒凝
縮器３に隣設した冷媒配管７の途中に単独で架装されて
いる。The sight glass 4 is connected downstream of the supercooling section 10 of the receiver-integrated refrigerant condenser 3 and observes the state of the refrigerant circulating in the refrigeration cycle 1. The sight glass 4 is mounted independently in a place where it is easily visible to an inspector in the engine room of the automobile, for example, in the middle of the refrigerant pipe 7 adjacent to the receiver-integrated refrigerant condenser 3.
【００１９】そして、サイトグラス４は、図１に示した
ように、両端部が冷媒配管７に溶接や締結等の手段で接
続される管状の金属ボディ１１、およびこの金属ボディ
１１の上面に形成された覗き窓１２に嵌め込まれた溶着
ガラス１３等より構成されている。一般に覗き窓１２か
ら気泡が見られるときは冷媒不足であり、気泡が見られ
ないときは冷媒量が適正量である。As shown in FIG. 1, the sight glass 4 is formed on a tubular metal body 11 whose both ends are connected to the refrigerant pipe 7 by means such as welding or fastening, and an upper surface of the metal body 11. It is composed of a welded glass 13 and the like fitted in the peep window 12. Generally, when bubbles are seen through the viewing window 12, the amount of refrigerant is insufficient, and when no bubbles are seen, the amount of refrigerant is appropriate.
【００２０】膨張弁５は、冷媒蒸発器６の冷媒入口部側
に接続され、サイトグラス４より流入した高温高圧の液
相冷媒を断熱膨張して低温低圧の霧状冷媒にするもの
で、本例では冷媒蒸発器６の冷媒出口部の冷媒過熱度を
所定値に維持するよう弁開度を自動調整する温度作動式
膨張弁が用いられている。The expansion valve 5 is connected to the refrigerant inlet side of the refrigerant evaporator 6 and adiabatically expands the high temperature high pressure liquid phase refrigerant flowing from the sight glass 4 into a low temperature low pressure atomized refrigerant. In the example, a temperature actuated expansion valve is used that automatically adjusts the valve opening so as to maintain the degree of refrigerant superheat at the refrigerant outlet of the refrigerant evaporator 6 at a predetermined value.
【００２１】冷媒蒸発器６は、冷媒圧縮機２の吸入側と
膨張弁５の下流側との間に接続され、膨張弁５より内部
に流入した気液二相状態の冷媒をブロワ（図示せず）に
より吹き付けられる室外空気または室内空気と熱交換さ
せて冷媒を蒸発気化させる熱交換器として働く。The refrigerant evaporator 6 is connected between the suction side of the refrigerant compressor 2 and the downstream side of the expansion valve 5 and blows the gas-liquid two-phase refrigerant flowing from the expansion valve 5 into the blower (not shown). Function as a heat exchanger that evaporates and evaporates the refrigerant by exchanging heat with the outdoor air or indoor air blown by (1).
【００２２】次に、この実施例の受液器一体型冷媒凝縮
器３を図２ないし図４に基づいて詳細に説明する。この
受液器一体型冷媒凝縮器３は、例えば高さが３００mm〜
４００mm、幅が３００mm〜６００mmで、自動車のエンジ
ンルーム内の走行風を受け易い場所に取付ブラケット
（図示せず）を介して一体的に取り付けられている。そ
して、受液器一体型冷媒凝縮器３は、熱交換を行うコア
１４、このコア１４の水平方向の一端側に配された第１
ヘッダ１５、およびコア１４の水平方向の他端側に配さ
れた第２ヘッダ１６等から構成され、炉中にて一体ろう
付けして製造される。Next, the liquid receiver integrated refrigerant condenser 3 of this embodiment will be described in detail with reference to FIGS. The liquid receiver integrated refrigerant condenser 3 has, for example, a height of 300 mm to
It has a width of 400 mm and a width of 300 mm to 600 mm, and is integrally attached to a place in the engine room of an automobile where the running wind is easily received through a mounting bracket (not shown). The receiver-integrated refrigerant condenser 3 includes a core 14 for heat exchange, and a first core 14 disposed on one end side in the horizontal direction of the core 14.
It is composed of a header 15 and a second header 16 arranged on the other end side of the core 14 in the horizontal direction, and is manufactured by integrally brazing in a furnace.
【００２３】コア１４は、凝縮部８および過冷却部１０
よりなり、上端部および下端部に受液器一体型冷媒凝縮
器３を自動車に取り付けるための取付用ブラケットを固
定するサイドプレート１７、１８がろう付け等の手段に
より接合されている。凝縮部８は、複数の凝縮用チュー
ブ１９およびコルゲートフィン２０よりなり、これらは
ろう付け等の手段により接合されている。過冷却部１０
は、複数の過冷却用チューブ２１およびコルゲートフィ
ン２２よりなり、これらはろう付け等の手段により接合
されている。The core 14 includes a condenser section 8 and a supercooling section 10.
The side plates 17 and 18 for fixing mounting brackets for mounting the liquid receiver integrated refrigerant condenser 3 to the automobile are joined to the upper end and the lower end by means such as brazing. The condensing part 8 is composed of a plurality of condensing tubes 19 and corrugated fins 20, which are joined by means such as brazing. Supercooling section 10
Consists of a plurality of supercooling tubes 21 and corrugated fins 22, which are joined by means such as brazing.
【００２４】なお、サイドプレート１７、１８は、アル
ミニウムまたはアルミニウム合金でろう材でクラッド処
理した金属プレートをプレス加工することによって形状
が得られ、水平方向の両端部にそれぞれ第１ヘッダ１５
および第２ヘッダ１６に差し込まれる挿入片１７１、１
７２、１８１、１８２が形成されている。The side plates 17 and 18 have a shape obtained by pressing a metal plate clad with a brazing material of aluminum or an aluminum alloy, and have first headers 15 at both ends in the horizontal direction.
And insert pieces 171, 1 inserted into the second header 16
72, 181, and 182 are formed.
【００２５】複数の凝縮用チューブ１９および過冷却用
チューブ２１は耐腐食性、熱伝導性に優れたアルミニウ
ムまたはアルミニウム合金等でろう材をクラッド処理し
たプレートを押出し加工することによって断面形状が偏
平な長円形状に形成され、内部に複数の冷媒流路を有し
ている。また、コルゲートフィン２０、２２は、冷媒の
放熱効率を向上させるための放熱フィンで、両側面をろ
う材でクラッド処理したアルミニウムまたはアルミニウ
ム合金等の金属プレートをコルゲート状にプレス加工し
たものである。The plurality of condensing tubes 19 and the supercooling tubes 21 are flat in cross section by extruding a plate obtained by clad-treating a brazing material with aluminum or an aluminum alloy having excellent corrosion resistance and thermal conductivity. It is formed in an elliptical shape and has a plurality of refrigerant channels inside. Further, the corrugated fins 20 and 22 are radiating fins for improving the heat radiation efficiency of the refrigerant, and are metal plates such as aluminum or aluminum alloy whose both sides are clad with a brazing material and pressed into a corrugated shape.
【００２６】なお、複数の凝縮用チューブ１９および複
数の過冷却用チューブ２１は水平方向に配されている。
そして、複数の凝縮用チューブ１９内を流れる冷媒は第
１ヘッダ１５から第２ヘッダ１６へ流れ、複数の過冷却
用チューブ２１内を流れる冷媒は逆に第２ヘッダ１６か
ら第１ヘッダ１５へ流れる。また、この実施例では、凝
縮用チューブ１９の本数を、過冷却用チューブ２１の本
数より多くしてあり、実験的経験によれば、過冷却用チ
ューブ２１の本数はコア１４の全体の１５％〜２０％程
度が好ましい。The plurality of condensing tubes 19 and the plurality of supercooling tubes 21 are arranged horizontally.
The refrigerant flowing in the plurality of condensing tubes 19 flows from the first header 15 to the second header 16, and the refrigerant flowing in the plurality of supercooling tubes 21 flows conversely from the second header 16 to the first header 15. . Further, in this embodiment, the number of the condensing tubes 19 is set to be larger than the number of the supercooling tubes 21, and according to experimental experience, the number of the supercooling tubes 21 is 15% of the entire core 14. It is preferably about 20%.
【００２７】第１ヘッダ１５は、断面形状が略Ｕ字状の
ヘッダプレート２３および断面形状が半円弧状のタンク
プレート２４よりなり、上下方向に延びる円筒形状を呈
する。この第１ヘッダ１５は、それぞれ耐腐食性および
熱伝導性に優れたアルミニウムまたはアルミニウム合金
で両側面をろう材でクラッド処理した金属プレートをプ
レス加工することによって所定の形状を得ている。The first header 15 is composed of a header plate 23 having a substantially U-shaped cross section and a tank plate 24 having a semi-circular cross section, and has a cylindrical shape extending in the vertical direction. The first header 15 has a predetermined shape obtained by pressing a metal plate whose both sides are clad with a brazing material with aluminum or aluminum alloy having excellent corrosion resistance and thermal conductivity.
【００２８】また、第１ヘッダ１５の上側部は凝縮部８
を構成する複数の凝縮用チューブ１９の上流端が接続さ
れ、下側部は過冷却部１０を構成する複数の過冷却用チ
ューブ２１の下流端が接続されている。そして、第１ヘ
ッダ１５の上下方向（板長さ方向）の上下端部の開口部
には、キャップ２５が嵌め込まれている。The upper part of the first header 15 is the condensing part 8
The upstream ends of the plurality of condensing tubes 19 constituting the above are connected, and the lower ends are connected to the downstream ends of the plurality of supercooling tubes 21 constituting the supercooling unit 10. Then, the cap 25 is fitted into the openings of the upper and lower ends of the first header 15 in the vertical direction (plate length direction).
【００２９】なお、キャップ２５は、アルミニウムまた
はアルミニウム合金でろう材でクラッド処理した金属プ
レートをプレス加工することによって形状が得られ、第
１ヘッダ１５の上下端部にろう付け等の手段により接合
される略円環状の接合片２５１と、この接合片２５１よ
り窪んでおり、上下端部の開口部を塞ぐ略円板状の閉塞
部２５２とを有している。The cap 25 has a shape obtained by pressing a metal plate clad with a brazing material of aluminum or an aluminum alloy, and is joined to the upper and lower ends of the first header 15 by means such as brazing. It has a substantially annular joint piece 251 and a substantially disk-shaped closing portion 252 that is recessed from the joint piece 251 and closes the openings at the upper and lower ends.
【００３０】ヘッダプレート２３には、プレス加工によ
って、長円形状の抜き穴２６が多数形成され、上下端部
に貫通穴２７がそれぞれ形成されている。その多数の抜
き穴２６には、複数の凝縮用チューブ１９の上流端およ
び複数の過冷却用チューブ２１の下流端が差し込まれた
状態でろう付け等の手段により接合されている。また、
２個の貫通穴２７には、サイドプレート１７、１８の挿
入片１７１、１８１が差し込まれた状態でろう付け等の
手段により接合されている。A large number of oval holes 26 are formed in the header plate 23 by press working, and through holes 27 are formed in the upper and lower ends, respectively. The upstream ends of the plurality of condensing tubes 19 and the downstream ends of the plurality of supercooling tubes 21 are joined to the numerous holes 26 by brazing or the like in a state of being inserted. Also,
The insertion pieces 171 and 181 of the side plates 17 and 18 are joined to the two through holes 27 by means such as brazing while being inserted.
【００３１】タンクプレート２４には、プレス加工によ
って、内部を上下に仕切るセパレータ２８を固定する穴
部２９、入口配管３０を固定する円形状の冷媒吸入口３
１および出口配管３２を固定する円形状の冷媒吐出口３
３が形成されている。そのセパレータ２８は、略円板形
状に形成され、第１ヘッダ１５の内部を、凝縮部８の上
流端のみに連通する入口側連通室３４と過冷却部１０の
下流端のみに連通する出口側連通室３５とに分割するも
のである。The tank plate 24 has a hole 29 for fixing the separator 28 that divides the inside into upper and lower parts by press working, and a circular refrigerant inlet 3 for fixing the inlet pipe 30.
Circular refrigerant discharge port 3 for fixing 1 and outlet pipe 32
3 is formed. The separator 28 is formed in a substantially disc shape, and the inside of the first header 15 communicates with only the upstream end of the condensing part 8 with the inlet side communication chamber 34 and the outlet side with which only the downstream end of the supercooling part 10 communicates. It is divided into a communication chamber 35.
【００３２】入口配管３０は、円管形状を呈し、冷媒圧
縮機２より吐出された高温高圧の気相冷媒を入口側連通
室３４内に流入させるための配管で、ろう付け等の手段
により冷媒吸入口３１に接合されている。また、出口配
管３２は、円管形状を呈し、出口側連通室３５内の液相
冷媒をサイトグラス４へ送り出す配管で、ろう付け等の
手段により冷媒吐出口３３に接合されている。The inlet pipe 30 has a circular pipe shape, and is a pipe for allowing the high-temperature and high-pressure vapor-phase refrigerant discharged from the refrigerant compressor 2 to flow into the inlet-side communication chamber 34. It is joined to the suction port 31. Further, the outlet pipe 32 has a circular pipe shape and is a pipe for sending out the liquid phase refrigerant in the outlet side communication chamber 35 to the sight glass 4, and is joined to the refrigerant discharge port 33 by means such as brazing.
【００３３】第２ヘッダ１６は、図４にも示したよう
に、断面形状が略Ｕ字状のヘッダプレート３６および断
面形状が略Ｒ形状の筒状体３７よりなり、上下方向に延
びる二重筒状を呈し、受液部９がタンク部に一体成形さ
れている。この第２ヘッダ１６は、それぞれ耐腐食性お
よび熱伝導性に優れたアルミニウムまたはアルミニウム
合金で所定の形状を得ている。なお、本例では、ヘッダ
プレート３６と筒状体３７の図示左側部分とでタンク部
を構成し、筒状体３７の筒部分で受液部９を構成してい
る。As shown in FIG. 4, the second header 16 is composed of a header plate 36 having a substantially U-shaped cross section and a tubular body 37 having a substantially R-shaped cross section, and is a double body extending in the vertical direction. It has a tubular shape, and the liquid receiving portion 9 is integrally formed with the tank portion. The second header 16 is made of aluminum or aluminum alloy having excellent corrosion resistance and thermal conductivity, and has a predetermined shape. In this example, the header plate 36 and the left side portion of the tubular body 37 in the drawing form a tank portion, and the tubular portion of the tubular body 37 constitutes the liquid receiving portion 9.
【００３４】また、第２ヘッダ１６の上側部は凝縮部８
を構成する複数の凝縮用チューブ１９の下流端が接続さ
れ、下側部は過冷却部１０を構成する複数の過冷却用チ
ューブ２１の上流端が接続されている。そして、第２ヘ
ッダ１６の上下方向（板長さ方向）の上下端部の開口部
には、キャップ３８が嵌め込まれている。The upper portion of the second header 16 is the condensing portion 8
The downstream ends of the plurality of condensing tubes 19 constituting the above are connected, and the lower ends are connected to the upstream ends of the plurality of supercooling tubes 21 constituting the supercooling unit 10. A cap 38 is fitted in the openings of the upper and lower ends of the second header 16 in the vertical direction (plate length direction).
【００３５】なお、キャップ３８は、第２ヘッダ１６の
上下端部にろう付け等の手段により接合される略円環状
の接合片３８１と、この接合片３８１より窪んでおり、
第２ヘッダ１６の上下端部の内側の開口部を塞ぐ略円板
状の閉塞部３８２と、第２ヘッダ１６の上下端部の外側
の開口部を塞ぐ偏平な楕円形状の閉塞部３８３とを有し
ている。The cap 38 has a substantially annular joining piece 381 joined to the upper and lower ends of the second header 16 by means such as brazing, and is recessed from the joining piece 381.
A substantially disk-shaped closing portion 382 that closes the inner opening of the upper and lower ends of the second header 16 and a flat elliptical closing portion 383 that closes the outer opening of the upper and lower ends of the second header 16. Have
【００３６】ヘッダプレート３６には、両側面をろう材
でクラッド処理した金属プレートをプレス加工すること
によって、長円形状の抜き穴３９が多数形成され、上下
端部に貫通穴４０がそれぞれ形成されている。その多数
の抜き穴３９には、複数の凝縮用チューブ１９の下流端
および複数の過冷却用チューブ２１の上流端が差し込ま
れた状態でろう付け等の手段により接合されている。ま
た、２個の貫通穴４０には、サイドプレート１７、１８
の挿入片１７２、１８２が差し込まれた状態でろう付け
等の手段により接合されている。A large number of oval holes 39 are formed in the header plate 36 by pressing a metal plate whose both sides are clad with a brazing material, and through holes 40 are formed in the upper and lower ends, respectively. ing. The downstream ends of the plurality of condensing tubes 19 and the upstream ends of the plurality of supercooling tubes 21 are joined to the large number of holes 39 by means such as brazing while being inserted. In addition, the two through holes 40 have side plates 17, 18
The insertion pieces 172 and 182 are joined together by means such as brazing.
【００３７】筒状体３７は、押出し加工にて所定の形状
に形成され、内側部に第２ヘッダ１６内を第１の部屋と
第２の部屋とに２分割（区画）する第１セパレータ４１
を有している。この第１セパレータ４１には、プレス加
工による追加工によって、第１の部屋の内部を上側の部
屋（上流側連通室４６）と下側の部屋（下流側連通室４
７）とに２分割（区画）する第２セパレータ４２を固定
する穴部４３、第１の部屋と第２の部屋とを連通する円
形状の冷媒流入口４４および円形状の冷媒流出口４５が
形成されている。The tubular body 37 is formed into a predetermined shape by extrusion and has a first separator 41 which divides the inside of the second header 16 into a first chamber and a second chamber inside.
have. In the first separator 41, the inside of the first chamber is further processed by press working so that the upper chamber (upstream communication chamber 46) and the lower chamber (downstream communication chamber 4).
7) has a hole 43 for fixing the second separator 42 that is divided into two parts (section), a circular refrigerant inlet 44 and a circular refrigerant outlet 45 that connect the first chamber and the second chamber. Has been formed.
【００３８】第１セパレータ４１および第２セパレータ
４２は、凝縮部８の下流端のみに連通する上流側連通室
４６と過冷却部１０の上流端のみに連通する下流側連通
室４７と外側に形成される受液部９を構成する気液分離
室４８とに、第２ヘッダ１６の内部を３分割する仕切り
部である。また、第１セパレータ４１は本発明の第２仕
切り部を構成し、第２セパレータ４２は本発明の第１仕
切り部を構成する。The first separator 41 and the second separator 42 are formed outside the upstream communication chamber 46 that communicates only with the downstream end of the condenser 8 and the downstream communication chamber 47 that communicates only with the upstream end of the supercooling unit 10. It is a partition part that divides the interior of the second header 16 into three parts for the gas-liquid separation chamber 48 that constitutes the liquid receiving part 9. Further, the first separator 41 constitutes the second partition part of the present invention, and the second separator 42 constitutes the first partition part of the present invention.
【００３９】なお、冷媒流入口４４は上流側連通室４６
の下部（凝縮部８の最下部）で開口し、上流側連通室４
６内の冷媒を気液分離室４８内に流入させる連通口で、
冷媒流出口４５は冷媒流入口４４より下方で開口し、気
液分離室４８内の冷媒を下流側連通室４７内に流出させ
る連通口である。また、気液分離室４８は、上流側連通
室４６より内部に流入した冷媒を気相冷媒と液相冷媒と
に分離して液相冷媒のみを下流側連通室４７へ送り出
す。The refrigerant inlet 44 is connected to the upstream communication chamber 46.
Is opened at the lower part (the lowermost part of the condensation part 8) of the upstream communication chamber 4
At the communication port through which the refrigerant in 6 flows into the gas-liquid separation chamber 48,
The refrigerant outlet port 45 is a communication opening that opens below the refrigerant inlet port 44 and allows the refrigerant in the gas-liquid separation chamber 48 to flow into the downstream side communication chamber 47. Further, the gas-liquid separation chamber 48 separates the refrigerant flowing into the upstream communication chamber 46 into a gas-phase refrigerant and a liquid-phase refrigerant, and sends only the liquid-phase refrigerant to the downstream communication chamber 47.
【００４０】〔第１実施例の作用〕次に、この実施例の
自動車用空気調和装置の冷凍サイクル１の作用を図１お
よび図２に基づいて簡単に説明する。自動車用空気調和
装置の運転が開始されると、電磁クラッチが通電され、
冷媒圧縮機がベルトと電磁クラッチを介してエンジンＥ
によって回転駆動される。[Operation of First Embodiment] Next, the operation of the refrigeration cycle 1 of the vehicle air conditioner of this embodiment will be briefly described with reference to FIGS. 1 and 2. When the operation of the automobile air conditioner is started, the electromagnetic clutch is energized,
Refrigerant compressor passes through belt and electromagnetic clutch to engine E
It is driven to rotate by.
【００４１】このため、冷媒圧縮機２内で圧縮されて吐
出された高温高圧の気相冷媒は、入口配管３０を通って
第１ヘッダ１５の入口側連通室３４内に流入する。入口
側連通室３４内に流入した気相冷媒は、入口側連通室３
４内で凝縮部８を構成する複数の凝縮用チューブ１９に
分配される。Therefore, the high-temperature and high-pressure vapor-phase refrigerant compressed and discharged in the refrigerant compressor 2 flows into the inlet-side communication chamber 34 of the first header 15 through the inlet pipe 30. The gas-phase refrigerant that has flowed into the inlet-side communication chamber 34 is stored in the inlet-side communication chamber 3
It is distributed to a plurality of condensing tubes 19 that constitute the condensing part 8 in the condenser 4.
【００４２】そして、複数の凝縮用チューブ１９に分配
された気相冷媒は、これらの凝縮用チューブ１９を通過
する際にコルゲートフィン２０を介して室外空気と熱交
換して凝縮液化され、一部の気相冷媒を残してほとんど
液相冷媒となる。このような気液二相状態の冷媒は、複
数の凝縮用チューブ１９より第２ヘッダ１６の上流側連
通室４６内に流入する。上流側連通室４６内に流入した
気液二相状態の冷媒は、一旦集められた後に、冷媒流入
口４４を通って受液部９（気液分離室４８）内へ流入す
る。The vapor-phase refrigerant distributed to the plurality of condensing tubes 19 is condensed and liquefied by exchanging heat with the outdoor air via the corrugated fins 20 when passing through these condensing tubes 19. Most of the gas phase refrigerant is liquid phase refrigerant. The refrigerant in the gas-liquid two-phase state flows into the upstream communication chamber 46 of the second header 16 through the plurality of condensing tubes 19. The refrigerant in the gas-liquid two-phase state that has flowed into the upstream communication chamber 46 is once collected and then flows into the liquid receiving section 9 (gas-liquid separation chamber 48) through the refrigerant inlet 44.
【００４３】受液部９（気液分離室４８）では、その断
面積をある程度大きく（例えば５００mm2 ）とることで
冷媒の速度を低減させ、且つ気泡状の気相冷媒の浮力を
利用している。さらに、第２セパレータ４２によって、
複数の凝縮用チューブ１９のうちの最下部の凝縮用チュ
ーブ１９の下流端から複数の過冷却用チューブ２１のう
ちの最下部の過冷却用チューブ２１の上流端までの流路
長さを長くとっている。In the liquid receiving portion 9 (gas-liquid separation chamber 48), the cross-sectional area of the liquid receiving portion 9 is increased to a certain extent (for example, 500 mm 2 ) to reduce the speed of the refrigerant and utilize the buoyancy of the bubble-like gas-phase refrigerant. There is. Further, by the second separator 42,
The flow path length from the downstream end of the lowermost condensing tube 19 of the plurality of condensing tubes 19 to the upstream end of the lowermost supercooling tube 21 of the plurality of supercooling tubes 21 is set to be long. ing.
【００４４】その上、第２セパレータ４２によって、複
数の凝縮用チューブ１９から第２ヘッダ１６内に流入し
た冷媒がＵターンして複数の過冷却用チューブ２１へ流
出するようにしているので、気液二相状態の冷媒が遠心
力により気液分離し気泡状の気相冷媒がより一箇所（内
側）に集められる。Moreover, the second separator 42 allows the refrigerant flowing from the plurality of condensing tubes 19 into the second header 16 to make a U-turn and flow out to the plurality of supercooling tubes 21. The refrigerant in the liquid two-phase state is separated into gas and liquid by the centrifugal force, and the bubble-like gas-phase refrigerant is gathered in one place (inner side).
【００４５】すなわち、冷媒流入口４４が上流側連通室
４６の下部で開口しており、冷媒流入口４４と冷媒流出
口４５とが比較的に接近しているので、気液二相状態の
冷媒が冷媒流入口４４→受液部９→冷媒流出口４５を通
過する時に、遠心力を受けて比重の大きい液相冷媒が筒
状体３７の外側部に移行し、比重の小さい気泡状の気相
冷媒が第２セパレータ４２の受液部９内への突出部分に
集まる。That is, since the refrigerant inlet 44 opens at the lower part of the upstream side communication chamber 46 and the refrigerant inlet 44 and the refrigerant outlet 45 are relatively close to each other, the refrigerant in the gas-liquid two-phase state is formed. When passing through the refrigerant inflow port 44 → the liquid receiving part 9 → the refrigerant outflow port 45, the liquid phase refrigerant having a large specific gravity is transferred to the outer side part of the cylindrical body 37 by the centrifugal force, and a bubble-like gas having a small specific gravity is generated. The phase refrigerant collects at the protruding portion of the second separator 42 into the liquid receiving portion 9.
【００４６】したがって、受液部９内で気液二相状態の
冷媒が効率良く気液分離するため、受液部９の上部に気
相冷媒が、下部に液相冷媒が溜まることになる。よっ
て、受液部９内において気液界面ができるだけの十分な
冷媒が冷凍サイクル１内に充填されているならば、受液
部９の下部にある冷媒流出口４５からは過冷却度を持た
ない液相冷媒のみが下流側連通室４７内に流入する。下
流側連通室４７内に流入した液相冷媒は、下流側連通室
４７内で過冷却部１０を構成する複数の過冷却用チュー
ブ２１に分配される。Therefore, the refrigerant in the gas-liquid two-phase state is efficiently gas-liquid separated in the liquid receiving section 9, so that the gas phase refrigerant is accumulated in the upper portion of the liquid receiving section 9 and the liquid phase refrigerant is accumulated in the lower portion thereof. Therefore, if the refrigeration cycle 1 is filled with a sufficient amount of refrigerant to form a gas-liquid interface in the liquid receiving section 9, there is no supercooling degree from the refrigerant outlet port 45 at the bottom of the liquid receiving section 9. Only the liquid-phase refrigerant flows into the downstream communication chamber 47. The liquid-phase refrigerant that has flowed into the downstream communication chamber 47 is distributed to the plurality of supercooling tubes 21 that form the supercooling unit 10 in the downstream communication chamber 47.
【００４７】そして、複数の過冷却用チューブ２１に分
配された液相冷媒は、これらの過冷却用チューブ２１を
通過する際にコルゲートフィン２２を介して室外空気と
熱交換して過冷却され、過冷却度を持つ液相冷媒とな
り、第１ヘッダ１５の出口側連通室３５内に流入する。The liquid-phase refrigerant distributed to the plurality of supercooling tubes 21 is supercooled by exchanging heat with the outdoor air via the corrugated fins 22 when passing through these supercooling tubes 21. It becomes a liquid-phase refrigerant having a supercooling degree and flows into the outlet side communication chamber 35 of the first header 15.
【００４８】出口側連通室３５内に流入した液相冷媒
は、出口配管３２、サイトグラス４を通って膨張弁５内
へ流入する。なお、膨張弁５内には気相冷媒を含まない
単相の液相冷媒が供給されるため、膨張弁５内に流入す
る液相冷媒の冷媒循環量が低下することはない。これに
より、十分な量の霧状冷媒が冷媒蒸発器６内へ供給され
るので、自動車用空気調和装置の冷凍能力を低下を防止
することができる。The liquid-phase refrigerant flowing into the outlet side communication chamber 35 flows into the expansion valve 5 through the outlet pipe 32 and the sight glass 4. Since the single-phase liquid-phase refrigerant containing no vapor-phase refrigerant is supplied into the expansion valve 5, the refrigerant circulation amount of the liquid-phase refrigerant flowing into the expansion valve 5 does not decrease. As a result, a sufficient amount of mist-like refrigerant is supplied into the refrigerant evaporator 6, so that it is possible to prevent the refrigerating capacity of the vehicle air conditioner from decreasing.
【００４９】〔第１実施例の効果〕以上のように、自動
車用空気調和装置の冷凍サイクル１は、上流側連通室４
６の下部、つまり受液部９の下側で冷媒流入口４４が開
口しているので、特に冷媒圧縮機２を高速運転した時の
ように冷媒循環量が大きい場合でも、受液部９の断面積
を異様に大きくしなくても、受液部９内で気液界面がで
きる。[Effects of First Embodiment] As described above, the refrigeration cycle 1 of the automobile air conditioner includes the upstream communication chamber 4
Since the refrigerant inlet port 44 is opened at the lower part of 6, that is, the lower side of the liquid receiving section 9, even if the refrigerant circulation amount is large, such as when the refrigerant compressor 2 is operated at high speed, A gas-liquid interface can be formed in the liquid receiving section 9 without increasing the cross-sectional area abnormally.
【００５０】また、複数の凝縮用チューブ１９の下流端
より流出した気液二相状態の冷媒を第２ヘッダ１６の上
流側連通室４６内にて一旦集め、その後に上流側連通室
４６の下部で開口する冷媒流入口４４を介して受液部９
内へ送り出すようにしている。これにより、複数の凝縮
用チューブ１９の下流端より出る細かい気泡状の気相冷
媒が上流側連通室４６内で集められて径の大きい気泡状
の気相冷媒となって浮力の影響を大きく受けるようにな
る。Further, the gas-liquid two-phase state refrigerant flowing out from the downstream ends of the plurality of condensing tubes 19 is temporarily collected in the upstream side communication chamber 46 of the second header 16 and thereafter, the lower part of the upstream side communication chamber 46. The liquid receiving portion 9 through the refrigerant inlet 44 opening at
I try to send it in. As a result, the fine bubble-like vapor-phase refrigerant that emerges from the downstream ends of the plurality of condensing tubes 19 is collected in the upstream side communication chamber 46 and becomes a bubble-like vapor-phase refrigerant with a large diameter, which is greatly affected by buoyancy. Like
【００５１】そして、凝縮部８の下流端と過冷却部１０
の上流端との境界の位置に設置した第２セパレータ４２
の存在により、冷媒流入口４４から受液部９を通って冷
媒流出口４５までの冷媒の流れがＵターン流れ（逆方向
のベクトル）となっている。このため、気液が遠心力に
より分離し気泡状の気相冷媒がより集まることで気泡状
の気相冷媒の径がより大きくなり、浮力の影響をより大
きく受けて気液分離がよりし易くなる。したがって、冷
媒流入口４４より受液部９内へ流入した際に気液分離し
易くなり、受液部９内において気相冷媒が上方に液相冷
媒が下方に滞留するようになる。The downstream end of the condenser 8 and the supercooler 10
Second separator 42 installed at the position of the boundary with the upstream end of the
Due to the existence of the above, the flow of the refrigerant from the refrigerant inlet 44 through the liquid receiving portion 9 to the refrigerant outlet 45 is a U-turn flow (vector in the opposite direction). Therefore, the gas-liquid is separated by the centrifugal force and the bubble-like gas-phase refrigerant is more gathered, so that the diameter of the bubble-like gas-phase refrigerant becomes larger, and the influence of the buoyancy is more greatly affected, and the gas-liquid separation is easier. Become. Therefore, when flowing into the liquid receiving section 9 through the refrigerant inlet port 44, gas-liquid separation is facilitated, and in the liquid receiving section 9, the vapor phase refrigerant accumulates upward and the liquid phase refrigerant accumulates downward.
【００５２】そして、仮に複数の凝縮用チューブ１９の
うちの最下部の凝縮用チューブ１９と複数の過冷却用チ
ューブ２１のうちの最上部の過冷却用チューブ２１とが
接近していても、凝縮部８の下流端と過冷却部１０の上
流端との境界の位置に設置した第２セパレータ４２の存
在により複数の凝縮用チューブ１９の下流端から複数の
過冷却用チューブ２１の上流端までの流路長さが長くな
っている。これにより、受液部９から複数の過冷却用チ
ューブ２１、サイトグラス４および膨張弁５へ分離でき
ていない気泡状の気相冷媒を流出させることがなくな
り、過冷却部１０を有効に働かせることができ、且つ膨
張弁５での流動音の発生を防止することができる。Even if the lowermost condensing tube 19 of the plurality of condensing tubes 19 and the uppermost supercooling tube 21 of the plurality of supercooling tubes 21 are close to each other, the condensing is performed. Due to the presence of the second separator 42 installed at the boundary position between the downstream end of the section 8 and the upstream end of the supercooling unit 10, from the downstream end of the plurality of condensing tubes 19 to the upstream end of the plurality of supercooling tubes 21. The flow path length is long. As a result, the unseparated bubble-like vapor-phase refrigerant is prevented from flowing out from the liquid receiving section 9 to the plurality of supercooling tubes 21, the sight glass 4, and the expansion valve 5, and the supercooling section 10 is effectively operated. It is possible to prevent the generation of flow noise in the expansion valve 5.
【００５３】そして、受液部９の下流側に過冷却部１０
が設けられているため、受液部９での気液分離が完全で
なくても、過冷却部１０にて気泡状の気相冷媒は完全に
消滅するので、受液部９の容積、つまり受液部９の断面
積を小さくすることができ、コア１４の凝縮部８と過冷
却部１０の有効放熱面積が縮小化することを防止するこ
とができる。Then, the supercooling section 10 is provided on the downstream side of the liquid receiving section 9.
Therefore, even if the gas-liquid separation in the liquid receiving section 9 is not complete, the bubble-like vapor phase refrigerant is completely extinguished in the subcooling section 10, so the volume of the liquid receiving section 9, that is, The cross-sectional area of the liquid receiving section 9 can be reduced, and the effective heat radiation area of the condenser section 8 and the supercooling section 10 of the core 14 can be prevented from being reduced.
【００５４】また、この実施例では、受液器一体型冷媒
凝縮器３を冷媒圧縮機２とサイトグラス４との間に接続
しているので、部品点数の低減即ちコスト低減が図られ
るため、生産性を向上することができる。また、自動車
のエンジンルーム内にコンパクトに収めることができる
ため、省スペースとなる。Further, in this embodiment, since the liquid receiver integrated refrigerant condenser 3 is connected between the refrigerant compressor 2 and the sight glass 4, the number of parts, that is, the cost can be reduced. Productivity can be improved. In addition, since it can be compactly housed in the engine room of an automobile, space is saved.
【００５５】なお、この実施例では、サイトグラス４を
過冷却部１０より下流側に接続しているため、受液部９
での気液分離性を確実にする必要はなく、受液部９の容
積、つまり受液部９の断面積は冷凍サイクル１の負荷変
動による冷媒変動量と冷媒漏れに対する余裕量の分だけ
見込んでおけば良い。In this embodiment, since the sight glass 4 is connected to the downstream side of the supercooling section 10, the liquid receiving section 9
It is not necessary to ensure the gas-liquid separability at the time, and the volume of the liquid receiving portion 9, that is, the cross-sectional area of the liquid receiving portion 9 is estimated by the amount of refrigerant fluctuation due to the load fluctuation of the refrigeration cycle 1 and the margin for refrigerant leakage. You can do it with
【００５６】〔第２実施例〕図５はこの発明の第２実施
例を示したもので、受液器一体型冷媒凝縮器を示した図
である。この実施例では、第１ヘッダ１５および第２ヘ
ッダ１６内に、凝縮部８を構成する複数の凝縮用チュー
ブ１９と連通している部屋を第２セパレータ５１、５２
により２分割して中間連通室５３および上流側連通室５
４を追加し、凝縮部８内での冷媒の流し方をＳターンと
している。なお、凝縮部８内での冷媒の流し方はセパレ
ータをさらに増やすことでターン数を増やしても良い。
但し、凝縮部８内への冷媒吸入口３１と受液部９内への
冷媒流入口４４とは相反する位置に設ける必要がある。[Second Embodiment] FIG. 5 shows a second embodiment of the present invention and is a view showing a liquid receiver integrated refrigerant condenser. In this embodiment, in the first header 15 and the second header 16, the chambers communicating with the plurality of condensing tubes 19 constituting the condensing unit 8 are provided with the second separators 51, 52.
Is divided into two by the intermediate communication chamber 53 and the upstream communication chamber 5
4 is added, and the way in which the refrigerant flows in the condensing section 8 is S-turn. The number of turns may be increased by further increasing the number of separators in the way in which the refrigerant flows in the condenser section 8.
However, the refrigerant inlet 31 into the condenser 8 and the refrigerant inlet 44 into the liquid receiver 9 need to be provided at opposite positions.
【００５７】〔第３実施例の構成〕図６および図７はこ
の発明の第３実施例を示したもので、図６は受液器一体
型冷媒凝縮器を示した図で、図７は受液器一体型冷媒凝
縮器の受液部を示した図である。この実施例の受液部９
（気液分離室４８）内の上部には、冷媒中の水分を取り
除くドライヤ６１が組み込まれている。ドライヤ６１
は、キャップ３８の楕円形状の閉塞部３８３と楕円形状
のホルダ（押さえ）６２に保持されたフィルタ６３との
間に設けられている。また、ドライヤ６１は、合成ゼオ
ライト、アルミナゲル、シリカゲル等のシリカアルミナ
吸着剤などの多数のフロン系冷媒用乾燥剤（以下乾燥剤
と略す）６１１が用いられている。[Structure of Third Embodiment] FIGS. 6 and 7 show a third embodiment of the present invention. FIG. 6 is a view showing a liquid receiver integrated refrigerant condenser, and FIG. It is the figure which showed the liquid receiving part of the liquid receiver integrated type refrigerant condenser. Liquid receiving portion 9 of this embodiment
A dryer 61 for removing water in the refrigerant is incorporated in the upper part of the (gas-liquid separation chamber 48). Dryer 61
Is provided between the elliptical occlusion part 383 of the cap 38 and the filter 63 held by the elliptical holder (presser) 62. As the dryer 61, a large number of desiccants (hereinafter abbreviated as desiccants) 611 for fluorocarbon refrigerants such as synthetic zeolite, alumina gel, and silica-alumina adsorbents such as silica gel are used.
【００５８】ホルダ６２は、多数の***６４が開けられ
たパンチングメタルよりなる。なお、フィルタ６３の材
質として剛性のあるものを用いた場合にはホルダ６２を
設けなくても良い。フィルタ６３は、例えば耐高温性に
優れるセラミックスや金属等よりなり、ドライヤ６１を
構成する多数の乾燥剤６１１が長期間使用している間に
崩壊したり、磨耗して微粉化して冷凍サイクル内に流出
するのを防止するものである。The holder 62 is made of punching metal having many small holes 64 formed therein. If the filter 63 is made of a rigid material, the holder 62 may not be provided. The filter 63 is made of, for example, ceramics or metal having excellent high temperature resistance, and many desiccants 611 forming the dryer 61 collapse during long-term use or are worn and pulverized into a refrigeration cycle. It prevents it from flowing out.
【００５９】ここで、ドライヤ６１の組み付け方法を簡
単に説明する。先ず、第２ヘッダ１６の筒状体３７内に
ホルダ６２を圧入して所定の位置に止める。そして、フ
ィルタ６３を第２ヘッダ１６の筒状体３７の上部側開口
よりホルダ６２に当接するまで挿入した後に、多数の乾
燥剤６１１よりなるドライヤ６１を入れる。そして、第
２ヘッダ１６の筒状体３７の上部側開口にキャップ３８
の閉塞部３８３を嵌め込んで一体ろう付けすることによ
り、ドライヤ６１の組み付けがなされる。Here, a method of assembling the dryer 61 will be briefly described. First, the holder 62 is press-fitted into the tubular body 37 of the second header 16 and stopped at a predetermined position. Then, the filter 63 is inserted from the upper side opening of the tubular body 37 of the second header 16 until it abuts on the holder 62, and then the dryer 61 including a large number of desiccants 611 is put therein. Then, the cap 38 is provided in the upper opening of the tubular body 37 of the second header 16.
The dryer 61 is assembled by fitting the closed portion 383 of FIG.
【００６０】〔第３実施例の作用〕次に、この実施例の
受液器一体型冷媒凝縮器３の作用を図６および図７に基
づいて簡単に説明する。複数の凝縮用チューブ１９より
第２ヘッダ１６の上流側連通室４６内に流入した気液二
相状態の冷媒は、一旦集められた後に、冷媒流入口４４
を通って受液部９（気液分離室４８）内へ流入する。そ
して、受液部９内に流入した気液二相状態の冷媒は、第
１実施例で説明したように効率良く気液分離して、液相
冷媒のみが冷媒流出口４５から下流側連通室４７内に流
入する。そして、下流側連通室４７内に流入した液相冷
媒は、下流側連通室４７内で過冷却部１０を構成する複
数の過冷却用チューブ２１に分配される。[Operation of Third Embodiment] Next, the operation of the liquid receiver integrated refrigerant condenser 3 of this embodiment will be briefly described with reference to FIGS. 6 and 7. The refrigerant in the gas-liquid two-phase state that has flowed into the upstream side communication chamber 46 of the second header 16 from the plurality of condensing tubes 19 is once collected and then the refrigerant inlet port 44.
To flow into the liquid receiving section 9 (gas-liquid separation chamber 48). The gas-liquid two-phase refrigerant flowing into the liquid receiving section 9 is efficiently gas-liquid separated as described in the first embodiment, and only the liquid-phase refrigerant is discharged from the refrigerant outlet port 45 into the downstream communication chamber. Flows into 47. Then, the liquid-phase refrigerant that has flowed into the downstream communication chamber 47 is distributed to the plurality of supercooling tubes 21 that configure the supercooling unit 10 in the downstream communication chamber 47.
【００６１】なお、この実施例においては、ドライヤ６
１を冷媒の主流流れを受けない場所に設置している。そ
して、液相冷媒が溜まる部分は受液部９の下部にある
が、気液分離方法は受液部９の下方から気泡が浮力で上
昇し、代わりに液相冷媒を受液部９の下方に補う方式の
ため、受液部９内の気泡の一部は外部（大気）との熱交
換により凝縮液化して受液部９の下方に流れる。このた
め、気液分離した気泡がホルダ６２の多数の***６４、
フィルタ６３を通って受液部９の上部に設けたドライヤ
６１内に一旦入り、凝縮液化して下方に流れ出る際に冷
媒中の水分が取り除かれる。In this embodiment, the dryer 6
1 is installed in a place where the mainstream flow of the refrigerant is not received. The portion where the liquid-phase refrigerant collects is below the liquid-receiving portion 9, but in the gas-liquid separation method, bubbles rise due to buoyancy from below the liquid-receiving portion 9, and instead the liquid-phase refrigerant falls below the liquid-receiving portion 9. Since a part of the bubbles in the liquid receiving section 9 is condensed and liquefied by heat exchange with the outside (atmosphere), it flows below the liquid receiving section 9. For this reason, the air bubbles separated from the gas and the liquid are generated in the small holes 64 of the holder 62,
Moisture in the refrigerant is removed when it enters the dryer 61 provided at the upper part of the liquid receiving section 9 through the filter 63, condenses into liquid, and flows out downward.
【００６２】したがって、冷媒の主流の一部ではある
が、常に冷媒中の水分を除去することができる。また、
フィルタ６３を冷媒の主流に配置しないことにより、長
期間使用してもフィルタ６３の上流と下流との間に上下
圧力差が生じることはなく、冷凍サイクルに悪影響を及
ぼさない。さらに、フィルタ６３のホルダ６２も冷媒の
主流に配置されないので、冷媒の流れの主流と共にホル
ダ６２が流出することはなく、これによりドライヤ６１
の流出を防止できる。よって、膨張弁５や冷媒圧縮機２
の弁機構に引っ掛かってその作動を妨げたり、冷媒圧縮
機２のピストン、軸受等の摺動部の焼き付きを防ぐこと
ができる。Therefore, although it is a part of the main flow of the refrigerant, the water in the refrigerant can be always removed. Also,
By not arranging the filter 63 in the main stream of the refrigerant, a vertical pressure difference does not occur between the upstream side and the downstream side of the filter 63 even if it is used for a long period of time, and the refrigeration cycle is not adversely affected. Further, since the holder 62 of the filter 63 is also not arranged in the main stream of the refrigerant, the holder 62 does not flow out together with the main stream of the refrigerant, which allows the dryer 61 to flow.
Can be prevented from flowing out. Therefore, the expansion valve 5 and the refrigerant compressor 2
It is possible to prevent the valve mechanism from being caught by the valve mechanism and to prevent seizure of sliding parts such as the piston and the bearing of the refrigerant compressor 2.
【００６３】〔第４実施例〕図８はこの発明の第４実施
例を示したもので、受液器一体型冷媒凝縮器の受液部を
示した図である。この実施例のキャップ３８の閉塞部３
８３には、ドライヤ６１を挿入するためのドライヤ挿入
口６５が開口している。そして、閉塞部３８３の内周に
は、シール材としての閉塞栓６６の小径部分（下端部）
が嵌め合わされている。[Fourth Embodiment] FIG. 8 shows a fourth embodiment of the present invention and is a view showing a liquid receiving portion of a liquid receiver integrated refrigerant condenser. Closure 3 of cap 38 of this embodiment
A dryer insertion port 65 for inserting the dryer 61 is opened in 83. Then, on the inner circumference of the closing portion 383, a small diameter portion (lower end portion) of the closing plug 66 as a sealing material.
Are fitted together.
【００６４】そして、この実施例のドライヤ６１の組み
付け方法は、第２ヘッダ１６の筒状体３７内にホルダ６
２を圧入しておいて受液器一体型冷媒凝縮器３を炉中で
一体ろう付けした後に、キャップ３８の閉塞部３８３に
形成したドライヤ挿入口６５から受液部９内にフィルタ
６３、ドライヤ６１を挿入するようにしている。そし
て、ドライヤ６１を挿入した後にドライヤ挿入口６５を
閉塞栓６６で塞ぐようにしている。Then, the method of assembling the dryer 61 of this embodiment is such that the holder 6 is placed in the tubular body 37 of the second header 16.
2 is press-fitted and the receiver-integrated refrigerant condenser 3 is integrally brazed in the furnace, and then the filter 63 and the dryer are inserted into the receiver 9 from the dryer insertion port 65 formed in the closing portion 383 of the cap 38. 61 is inserted. Then, after the dryer 61 is inserted, the dryer insertion port 65 is closed by the closing plug 66.
【００６５】なお、閉塞栓６６は、トーチろう付け法、
アルゴンガス溶接法等のドライヤ６１やフィルタ６３に
あまり熱が伝わらないような溶接法を用いてキャップ３
８に接合すると良い。また、閉塞栓６６の接合位置とフ
ィルタ６３とはある程度の距離が保たれているので、フ
ィルタ６３の材質として一般的な樹脂材料を用いること
ができる。The block plug 66 is formed by a torch brazing method,
The cap 3 is formed by using a welding method such as an argon gas welding method that does not transfer much heat to the dryer 61 and the filter 63.
It is good to join to 8. Further, since a certain distance is maintained between the joining position of the blocking plug 66 and the filter 63, a general resin material can be used as the material of the filter 63.
【００６６】〔第５実施例〕図９はこの発明の第５実施
例を示したもので、受液器一体型冷媒凝縮器の受液部を
示した図である。この実施例のキャップ３８の閉塞部３
８３には、ドライヤ６１を挿入するためのドライヤ挿入
口６５が開口している。そして、閉塞部３８３の内周に
はシール材としての閉塞栓６７の小径部分（下端部）が
嵌め合わされている。[Fifth Embodiment] FIG. 9 shows a fifth embodiment of the present invention and is a view showing a liquid receiving portion of a liquid receiver integrated refrigerant condenser. Closure 3 of cap 38 of this embodiment
A dryer insertion port 65 for inserting the dryer 61 is opened in 83. A small diameter portion (lower end portion) of the closing plug 67 as a sealing material is fitted to the inner circumference of the closing portion 383.
【００６７】また、閉塞部３８３は、他の実施例より板
厚が厚く形成されており、その上部側の内周に閉塞栓６
７の小径部分の上部外周に形成されたおねじ部（外周ね
じ部）６７１に螺合するめねじ部（内周ねじ部）６５１
が形成されている。閉塞栓６７の外周とキャップ３８の
閉塞部３８３の内周との間には、ドライヤ６１の外部へ
の流出を防止するシール材としてのＯリング６８が装着
されている。The closing portion 383 is formed thicker than the other embodiments, and the closing plug 6 is provided on the inner circumference on the upper side thereof.
Female threaded portion (inner circumferential threaded portion) 651 that is screwed into a male threaded portion (outer circumferential threaded portion) 671 formed on the upper outer circumference of the small diameter portion of 7.
Are formed. An O-ring 68, which serves as a sealing material that prevents the dryer 61 from flowing out, is mounted between the outer circumference of the closing plug 67 and the inner circumference of the closing portion 383 of the cap 38.
【００６８】そして、この実施例のドライヤ６１の組み
付け方法は、第２ヘッダ１６の筒状体３７内にホルダ６
２を圧入し、受液器一体型冷媒凝縮器３を炉中で一体ろ
う付けした後に、キャップ３８の閉塞部３８３のドライ
ヤ挿入口６５から受液部９内にフィルタ６３、ドライヤ
６１を挿入し、閉塞栓６７をドライヤ挿入口６５にねじ
込むようにしている。この実施例の場合には、冷凍サイ
クルを長期間使用した後に閉塞栓６７を開けてドライヤ
６１およびフィルタ６３の取替え（交換）を行うことが
できる。The method of assembling the dryer 61 of this embodiment is such that the holder 6 is placed in the tubular body 37 of the second header 16.
2 is press-fitted and the receiver-integrated refrigerant condenser 3 is integrally brazed in the furnace, and then the filter 63 and the dryer 61 are inserted into the receiver 9 from the dryer insertion port 65 of the closing portion 383 of the cap 38. The block plug 67 is screwed into the dryer insertion port 65. In the case of this embodiment, after the refrigeration cycle is used for a long period of time, the blocking plug 67 can be opened and the dryer 61 and the filter 63 can be replaced (replaced).
【００６９】〔第６実施例〕図１０はこの発明の第６実
施例を示したもので、受液器一体型冷媒凝縮器の受液部
を示した図である。この実施例のキャップ３８の閉塞部
３８３には、ドライヤ６１を挿入するためのドライヤ挿
入口６５が形成されており、しかもこのドライヤ挿入口
６５を閉じる突起片６９が一体成形されている。なお、
突起片６９は弾性変形可能に設けられている。[Sixth Embodiment] FIG. 10 shows a sixth embodiment of the present invention and is a view showing a liquid receiving portion of a liquid receiver integrated refrigerant condenser. At the closing portion 383 of the cap 38 of this embodiment, a dryer insertion port 65 for inserting the dryer 61 is formed, and a projecting piece 69 for closing the dryer insertion port 65 is integrally formed. In addition,
The protruding piece 69 is elastically deformable.
【００７０】この実施例の場合も、受液器一体型冷媒凝
縮器３を炉中で一体ろう付けし、ドライヤ挿入口６５か
ら受液部９内にフィルタ６３、ドライヤ６１を挿入した
後に、キャップ３８の突起片６９を閉塞部３８３と同一
平面上に位置するように倒してから、ドライヤ６１の流
出を防止するためにドライヤ挿入口６５を塞ぐ。そし
て、第４実施例と同様にして、突起片６９の外周と閉塞
部３８３の内周との隙間をろう付けや溶接により塞ぐ。Also in this embodiment, the liquid receiver integrated refrigerant condenser 3 is integrally brazed in the furnace, the filter 63 and the dryer 61 are inserted into the liquid receiver 9 from the dryer insertion port 65, and then the cap is closed. The protrusion piece 69 of 38 is laid down so as to be located on the same plane as the closing portion 383, and then the dryer insertion port 65 is closed to prevent the dryer 61 from flowing out. Then, similarly to the fourth embodiment, the gap between the outer circumference of the protruding piece 69 and the inner circumference of the closing portion 383 is closed by brazing or welding.
【００７１】〔第７実施例〕図１１はこの発明の第７実
施例を示したもので、受液器一体型冷媒凝縮器の受液部
を示した図である。この実施例のキャップ３８の閉塞部
３８３には、上方に向かって内径が漸減する円錐状部分
と円筒部分よりなる筒部７０が形成されている。この筒
部７０内には、ドライヤ６１を挿入するためのドライヤ
挿入口７１が開口している。そして、筒部７０内にはシ
ール材としての閉塞栓７２の小径部分（下端部）が嵌め
合わされている。[Seventh Embodiment] FIG. 11 shows a seventh embodiment of the present invention and is a view showing a liquid receiving portion of a liquid receiver integrated refrigerant condenser. The closing portion 383 of the cap 38 of this embodiment is formed with a tubular portion 70 including a conical portion and a cylindrical portion whose inner diameter gradually decreases upward. A dryer insertion port 71 for inserting the dryer 61 is opened in the tubular portion 70. A small diameter portion (lower end portion) of the closing plug 72 as a sealing material is fitted in the tubular portion 70.
【００７２】また、筒部７０の上部側の内周には、閉塞
栓７２の小径部分の上部外周に形成されたおねじ部（外
周ねじ部）７２１に螺合するめねじ部（内周ねじ部）７
０１が形成されている。閉塞栓７２の小径部分の外周と
筒部７０の内周との間には、ドライヤ６１の外部への流
出を防止するシール材としてのＯリング７３が装着され
ている。Further, on the inner periphery of the upper portion of the tubular portion 70, a female screw portion (inner peripheral screw portion) that is screwed into a male screw portion (outer peripheral screw portion) 721 formed on the upper outer periphery of the small diameter portion of the closure plug 72. ) 7
01 is formed. An O-ring 73 as a sealing material that prevents the dryer 61 from flowing out is mounted between the outer periphery of the small-diameter portion of the blocking plug 72 and the inner periphery of the tubular portion 70.
【００７３】この実施例の場合には、ドライヤ挿入口７
１からドライヤ６１を受液部（気液分離室４８）内に挿
入した後に、閉塞栓７２でドライヤ挿入口７１を塞いだ
場合でも、閉塞栓７２の小径部分の下端部がドライヤ６
１を構成する多数の乾燥剤６１１の上面に届かず、多数
の乾燥剤６１１の上面を平に保つことができる。In the case of this embodiment, the dryer insertion port 7
Even when the dryer 61 is inserted into the liquid receiving part (gas-liquid separation chamber 48) from 1 and the dryer insertion port 71 is closed by the closing plug 72, the lower end of the small-diameter portion of the closing plug 72 is placed in the dryer 6
It is possible to keep the upper surfaces of the many desiccants 611, which do not reach the upper surfaces of the many desiccants 611 that form one, flat.
【００７４】さらに、多数の乾燥剤６１１の上面と閉塞
栓７２の小径部分の下端部との間を、シール材としての
フェルト（耐水性の重質紙）７４で塞ぐようにしている
ので、ドライヤ６１を構成する多数の乾燥剤６１１同士
に隙間が発生することを防止できる。なお、多数の乾燥
剤６１１同士に隙間があると、車両の振動等により乾燥
剤６１１が移動することにより乾燥剤６１１同士が磨耗
して微粉化し易くなる。Further, since a space between the upper surfaces of the many desiccants 611 and the lower end of the small-diameter portion of the plug 72 is closed by a felt (waterproof heavy paper) 74 as a sealing material, the dryer is used. It is possible to prevent a gap from being generated between the large number of desiccants 611 forming 61. If there are gaps between a large number of desiccants 611, the desiccants 611 move due to vibration of the vehicle or the like, and the desiccants 611 are abraded and easily pulverized.
【００７５】〔変形例〕この実施例では、本発明を自動
車用空気調和装置に適用したが、本発明を鉄道車両、船
舶や航空機等のように冷媒循環量が変動するあらゆる空
気調和装置に適用しても良い。また、受液器一体型冷媒
凝縮器３の放熱を有効利用するヒートポンプ式冷凍サイ
クルに適用しても良い。[Modification] In this embodiment, the present invention is applied to the air conditioner for automobiles, but the present invention is applied to all air conditioners in which the refrigerant circulation amount fluctuates, such as railroad cars, ships and aircrafts. You may. Further, it may be applied to a heat pump type refrigeration cycle that effectively uses the heat radiation of the liquid receiver integrated refrigerant condenser 3.
【００７６】この実施例では、第２ヘッダ１６をヘッダ
プレート３６と筒状体３７で構成したが、第２ヘッダ１
６を押出し成形により一部品で一体成形しても良い。同
様に、第１ヘッダ１５も押出し成形により一部品で一体
成形しても良い。また、第２ヘッダ１６を複数の筒状体
を上下方向に張り合わせて構成しても良く、さらに第２
ヘッダ１６を１個の筒状体で形成して、その筒状体内に
別途設けた第１セパレータ４１を嵌め込んでも良い。こ
の実施例では、第２ヘッダ１６に受液部９を一体成形し
たが、第２ヘッダ１６の外側に、第２ヘッダ１６と別部
品で設けた受液部を接続しても良い。In this embodiment, the second header 16 is composed of the header plate 36 and the tubular body 37.
It is also possible to integrally form 6 by extrusion molding. Similarly, the first header 15 may be integrally molded as a single component by extrusion molding. In addition, the second header 16 may be formed by vertically stacking a plurality of cylindrical bodies.
The header 16 may be formed of one tubular body, and the first separator 41 separately provided may be fitted into the tubular body. In this embodiment, the liquid receiving portion 9 is integrally formed with the second header 16, but the liquid receiving portion provided as a separate component from the second header 16 may be connected to the outside of the second header 16.
【００７７】第３〜第７実施例では、受液部９内にドラ
イヤ６１を構成する多数の乾燥剤６１１を直接挿入した
が、フェルト（耐水性の重質紙）製の袋内に多数の乾燥
剤６１１を入れたものを受液部９内に挿入しても良い。
第４〜第７実施例では、フィルタ６３の材質として一般
的な樹脂材料を用いて一体ろう付け後に受液部９内に挿
入したが、フィルタ６３の材質として耐熱材料を用いる
ことにより一体ろう付け前に受液部９内に挿入しておい
ても良い。In the third to seventh embodiments, many desiccants 611 forming the dryer 61 are directly inserted into the liquid receiving section 9, but many desiccants 611 are formed in a bag made of felt (waterproof heavy paper). The desiccant 611 may be inserted into the liquid receiving section 9.
In the fourth to seventh embodiments, a general resin material is used as the material of the filter 63 and is inserted into the liquid receiving portion 9 after being integrally brazed. However, by using a heat-resistant material as the material of the filter 63, integral brazing is performed. It may be inserted into the liquid receiving portion 9 before.
【００７８】第３〜第７実施例では、第２ヘッダ１６の
筒状体３７の上端面、つまり上端側のキャップ３８にド
ライヤ挿入口６５、７１を形成したが、第２ヘッダ１６
の筒状体３７の下端面（下端側のキャップ３８）または
筒状体３７の側面等、受液部９の周囲であればどこにド
ライヤ挿入口を形成しても良い。In the third to seventh embodiments, the dryer insertion ports 65 and 71 are formed in the upper end surface of the tubular body 37 of the second header 16, that is, the cap 38 on the upper end side.
The dryer insertion port may be formed anywhere around the liquid receiving portion 9, such as the lower end surface of the tubular body 37 (cap 38 on the lower end side) or the side surface of the tubular body 37.
【００７９】[0079]
【発明の効果】この発明は、仮に凝縮部の最下部と過冷
却部の最上部とが接近していても、タンク部の第１仕切
り部により凝縮部の下流端から過冷却部の上流端までの
流路長さが長くなるので、受液部の気液分離室内での冷
媒の気液分離性を向上させることができる。また、受液
部の気液分離室より下流の過冷却部へ気相冷媒が流出し
難くなるので、過冷却部を有効に働かせることができ、
さらに膨張弁での作動音の発生を防止できる。According to the present invention, even if the lowermost part of the condensing part and the uppermost part of the supercooling part are close to each other, the first partitioning part of the tank part allows the downstream end of the condensing part to the upstream end of the supercooling part. Since the length of the flow path up to is increased, the gas-liquid separability of the refrigerant in the gas-liquid separation chamber of the liquid receiving section can be improved. Further, since it becomes difficult for the gas-phase refrigerant to flow out to the supercooling section downstream of the gas-liquid separation chamber of the liquid receiving section, the supercooling section can be effectively operated,
Further, it is possible to prevent the occurrence of operating noise in the expansion valve.
【図１】この発明の第１実施例に用いた自動車用空気調
和装置の冷凍サイクルを示した構成図である。FIG. 1 is a configuration diagram showing a refrigeration cycle of an automobile air conditioner used in a first embodiment of the present invention.
【図２】この発明の第１実施例に用いた受液器一体型冷
媒凝縮器を示した断面図である。FIG. 2 is a sectional view showing a liquid receiver integrated refrigerant condenser used in the first embodiment of the present invention.
【図３】図２の受液器一体型冷媒凝縮器の分解図であ
る。3 is an exploded view of the liquid receiver integrated refrigerant condenser of FIG. 2. FIG.
【図４】図２の受液器一体型冷媒凝縮器のタンク部と受
液部を一体成形した第２ヘッダを示した断面図である。FIG. 4 is a cross-sectional view showing a second header in which the tank portion and the liquid receiving portion of the liquid receiver integrated refrigerant condenser of FIG. 2 are integrally formed.
【図５】この発明の第２実施例に用いた受液器一体型冷
媒凝縮器を示した断面図である。FIG. 5 is a sectional view showing a liquid receiver integrated refrigerant condenser used in a second embodiment of the present invention.
【図６】この発明の第３実施例に用いた受液器一体型冷
媒凝縮器を示した断面図である。FIG. 6 is a sectional view showing a liquid receiver integrated refrigerant condenser used in a third embodiment of the present invention.
【図７】図６の受液器一体型冷媒凝縮器の受液部を示し
た断面図である。7 is a cross-sectional view showing a liquid receiving portion of the liquid receiver integrated refrigerant condenser of FIG.
【図８】この発明の第４実施例に用いた受液器一体型冷
媒凝縮器の受液部を示した断面図である。FIG. 8 is a sectional view showing a liquid receiving portion of a liquid receiver integrated refrigerant condenser used in a fourth embodiment of the present invention.
【図９】この発明の第５実施例に用いた受液器一体型冷
媒凝縮器の受液部を示した断面図である。FIG. 9 is a sectional view showing a liquid receiving portion of a liquid receiver integrated refrigerant condenser used in a fifth embodiment of the present invention.
【図１０】この発明の第６実施例に用いた受液器一体型
冷媒凝縮器の受液部を示した断面図である。FIG. 10 is a sectional view showing a liquid receiving portion of a liquid receiver integrated refrigerant condenser used in a sixth embodiment of the present invention.
【図１１】この発明の第７実施例に用いた受液器一体型
冷媒凝縮器の受液部を示した断面図である。FIG. 11 is a sectional view showing a liquid receiving portion of a liquid receiver integrated refrigerant condenser used in a seventh embodiment of the present invention.
１ 冷凍サイクル ３ 受液器一体型冷媒凝縮器 ４ サイトグラス ８ 凝縮部 ９ 受液部 １０ 過冷却部 １４ コア １５ 第１ヘッダ １６ 第２ヘッダ １９ 凝縮用チューブ ２１ 過冷却用チューブ ２５ キャップ ３８ キャップ ４１ 第１セパレータ（第２仕切り部） ４２ 第２セパレータ（第１仕切り部） ４４ 冷媒流入口 ４５ 冷媒流出口 ４６ 上流側連通室 ４７ 下流側連通室 ４８ 気液分離室 ６１ ドライヤ ６２ ホルダ（押さえ） ６３ フィルタ 1 Refrigeration cycle 3 Liquid receiver integrated refrigerant condenser 4 Sight glass 8 Condensing part 9 Liquid receiving part 10 Supercooling part 14 Core 15 First header 16 Second header 19 Condensing tube 21 Supercooling tube 25 Cap 38 Cap 41 1st separator (2nd partition part) 42 2nd separator (1st partition part) 44 Refrigerant inflow port 45 Refrigerant outflow port 46 Upstream side communication chamber 47 Downstream side communication chamber 48 Gas-liquid separation chamber 61 Dryer 62 Holder (presser) 63 filter
Claims (4)
部、およびこの凝縮部で凝縮された冷媒を過冷却する過
冷却部を上下に配設したコアと、 （ｂ）このコアの一端部において上下方向に延ばされ、
上側部に前記凝縮部の下流端が接続され、下側部に前記
過冷却部の上流端が接続され、 内部を、前記凝縮部の下流端のみに連通する上流側連通
室と前記過冷却部の上流端のみに連通する下流側連通室
とに区画する第１仕切り部を有するタンク部と、 （ｃ）内部に、流入した冷媒を気液分離する気液分離室
を有し、且つこの気液分離室と前記上流側連通室および
前記下流側連通室とを仕切る第２仕切り部を有する受液
部とを備えた受液器一体型冷媒凝縮器であって、 （ｄ）前記第２仕切り部は、前記上流側連通室の下部で
開口し、前記上流側連通室より前記気液分離室内へ冷媒
を流入させる冷媒流入口、およびこの冷媒流入口より下
方で開口し、前記気液分離室より前記下流側連通室内へ
冷媒を流出させる冷媒流出口を有することを特徴とする
受液器一体型冷媒凝縮器。1. A core having (a) a condensing section for condensing a refrigerant flowing inside and a supercooling section for supercooling the refrigerant condensed in the condensing section, and (b) one end of the core. Part is extended vertically,
The upper end is connected to the downstream end of the condensing part, the lower part is connected to the upstream end of the supercooling part, and the inside is connected to only the downstream end of the condensing part. A tank part having a first partitioning part that is partitioned into a downstream side communication chamber that communicates only with the upstream end, and (c) has a gas-liquid separation chamber for separating the inflowing refrigerant into a gas and a liquid. A liquid receiver integrated refrigerant condenser comprising a liquid separation chamber and a liquid receiving part having a second partition part for partitioning the upstream communication chamber and the downstream communication chamber, wherein: (d) the second partition The portion opens at a lower portion of the upstream communication chamber, a refrigerant inflow port for allowing a refrigerant to flow from the upstream communication chamber into the gas-liquid separation chamber, and an opening below the refrigerant inflow port, the gas-liquid separation chamber It has a refrigerant outlet for letting the refrigerant flow out into the downstream side communication chamber. Integrated type condenser-receiver.
において、 前記受液部は、前記タンク部に一体成形されたことを特
徴とする受液器一体型冷媒凝縮器。2. The liquid receiver integrated refrigerant condenser according to claim 1, wherein the liquid receiving part is integrally formed with the tank part.
体型冷媒凝縮器において、 前記過冷却部よりも下流に、冷媒の状態を観察するため
のサイトグラスを接続したことを特徴とする受液器一体
型冷媒凝縮器。3. The receiver-integrated refrigerant condenser according to claim 1 or 2, wherein a sight glass for observing the state of the refrigerant is connected downstream of the supercooling section. Refrigerant condenser with integrated receiver.
体型冷媒凝縮器において、 前記気液分離室内の上部には、冷媒中の水分を取り除く
ドライヤが設けられたことを特徴とする受液器一体型冷
媒凝縮器。4. The receiver-integrated refrigerant condenser according to claim 1 or 2, wherein a dryer for removing water in the refrigerant is provided at an upper portion of the gas-liquid separation chamber. Liquid receiver integrated refrigerant condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22543294A JP3617083B2 (en) | 1993-10-12 | 1994-09-20 | Receiver integrated refrigerant condenser |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5-254425 | 1993-10-12 | ||
| JP25442593 | 1993-10-12 | ||
| JP22543294A JP3617083B2 (en) | 1993-10-12 | 1994-09-20 | Receiver integrated refrigerant condenser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07180930A true JPH07180930A (en) | 1995-07-18 |
| JP3617083B2 JP3617083B2 (en) | 2005-02-02 |
Family
ID=34227924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22543294A Expired - Lifetime JP3617083B2 (en) | 1993-10-12 | 1994-09-20 | Receiver integrated refrigerant condenser |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3617083B2 (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0811814A1 (en) * | 1996-06-05 | 1997-12-10 | Valeo Thermique Moteur S.A. | Condenser with a separate receiver for an air-conditioning unit, particularly of a motor vehicle |
| FR2757611A1 (en) * | 1996-12-23 | 1998-06-26 | Valeo Thermique Moteur Sa | Automobile air-conditioner condenser with separate reservoir |
| US5813249A (en) * | 1995-07-18 | 1998-09-29 | Denso Corporation | Refrigeration cycle |
| JPH10272920A (en) * | 1997-03-31 | 1998-10-13 | Denso Corp | Mounting structure of refrigerant condenser integrally formed with receiver |
| US5988267A (en) * | 1997-06-16 | 1999-11-23 | Halla Climate Control Corp. | Multistage gas and liquid phase separation type condenser |
| WO2000025071A1 (en) | 1998-10-27 | 2000-05-04 | Valeo Klimatechnik Gmbh | Method and condenser for condensing the internal coolant of a motor vehicle air conditioning |
| US6341647B1 (en) | 1999-02-03 | 2002-01-29 | Denso Corporation | Separator-integrated condenser for vehicle air conditioner |
| US6449977B1 (en) | 2000-12-29 | 2002-09-17 | Multisorb Technologies, Inc. | Self-retaining elongated adsorbent unit |
| EP1319907A2 (en) * | 2001-12-14 | 2003-06-18 | Sanden Corporation | Heat exchanger |
| JP2004144472A (en) * | 2004-02-13 | 2004-05-20 | Showa Denko Kk | Condenser integrated with liquid receiving part |
| US6742355B2 (en) | 2001-12-28 | 2004-06-01 | Calsonic Kansei Corporation | Receiver-drier for use in an air conditioning system |
| WO2005071330A1 (en) * | 2004-01-27 | 2005-08-04 | Showa Denko K.K. | Condenser |
| US6935413B2 (en) | 2002-05-15 | 2005-08-30 | Sanden Corporation | Heat exchanger |
| KR100538746B1 (en) * | 1998-11-14 | 2006-03-20 | 한라공조주식회사 | Receiver |
| CN100337084C (en) * | 2003-09-16 | 2007-09-12 | 株式会社电装 | Heat exchanger module |
| KR100902760B1 (en) * | 2007-10-23 | 2009-06-15 | 주식회사 두원공조 | Manufacturing method of a condenser headpipe integrated with receiver dryer |
| EP2108905A1 (en) * | 2008-04-09 | 2009-10-14 | Behr France Hambach S.A.R.L. | Condenser, in particular for a motor vehicle |
| JP2012159245A (en) * | 2011-02-01 | 2012-08-23 | Showa Denko Kk | Condenser |
-
1994
- 1994-09-20 JP JP22543294A patent/JP3617083B2/en not_active Expired - Lifetime
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5813249A (en) * | 1995-07-18 | 1998-09-29 | Denso Corporation | Refrigeration cycle |
| FR2749647A1 (en) * | 1996-06-05 | 1997-12-12 | Valeo Thermique Moteur Sa | SEPARATE TANK CONDENSER FOR AIR CONDITIONING INSTALLATION, ESPECIALLY A MOTOR VEHICLE |
| EP0811814A1 (en) * | 1996-06-05 | 1997-12-10 | Valeo Thermique Moteur S.A. | Condenser with a separate receiver for an air-conditioning unit, particularly of a motor vehicle |
| FR2757611A1 (en) * | 1996-12-23 | 1998-06-26 | Valeo Thermique Moteur Sa | Automobile air-conditioner condenser with separate reservoir |
| JPH10272920A (en) * | 1997-03-31 | 1998-10-13 | Denso Corp | Mounting structure of refrigerant condenser integrally formed with receiver |
| US5988267A (en) * | 1997-06-16 | 1999-11-23 | Halla Climate Control Corp. | Multistage gas and liquid phase separation type condenser |
| WO2000025071A1 (en) | 1998-10-27 | 2000-05-04 | Valeo Klimatechnik Gmbh | Method and condenser for condensing the internal coolant of a motor vehicle air conditioning |
| KR100538746B1 (en) * | 1998-11-14 | 2006-03-20 | 한라공조주식회사 | Receiver |
| US6341647B1 (en) | 1999-02-03 | 2002-01-29 | Denso Corporation | Separator-integrated condenser for vehicle air conditioner |
| US6640582B2 (en) | 2000-12-29 | 2003-11-04 | Multisorb Technologies, Inc. | Self-retaining elongated adsorbent unit |
| US6449977B1 (en) | 2000-12-29 | 2002-09-17 | Multisorb Technologies, Inc. | Self-retaining elongated adsorbent unit |
| EP1319907A3 (en) * | 2001-12-14 | 2003-07-02 | Sanden Corporation | Heat exchanger |
| EP1319907A2 (en) * | 2001-12-14 | 2003-06-18 | Sanden Corporation | Heat exchanger |
| US6742355B2 (en) | 2001-12-28 | 2004-06-01 | Calsonic Kansei Corporation | Receiver-drier for use in an air conditioning system |
| US6935413B2 (en) | 2002-05-15 | 2005-08-30 | Sanden Corporation | Heat exchanger |
| CN100337084C (en) * | 2003-09-16 | 2007-09-12 | 株式会社电装 | Heat exchanger module |
| US7591148B2 (en) | 2003-09-16 | 2009-09-22 | Denso Corporation | Vehicular heat exchanger module |
| US7669437B2 (en) | 2003-09-16 | 2010-03-02 | Denso Corporation | Heat exchanger module |
| WO2005071330A1 (en) * | 2004-01-27 | 2005-08-04 | Showa Denko K.K. | Condenser |
| JP2004144472A (en) * | 2004-02-13 | 2004-05-20 | Showa Denko Kk | Condenser integrated with liquid receiving part |
| KR100902760B1 (en) * | 2007-10-23 | 2009-06-15 | 주식회사 두원공조 | Manufacturing method of a condenser headpipe integrated with receiver dryer |
| EP2108905A1 (en) * | 2008-04-09 | 2009-10-14 | Behr France Hambach S.A.R.L. | Condenser, in particular for a motor vehicle |
| JP2012159245A (en) * | 2011-02-01 | 2012-08-23 | Showa Denko Kk | Condenser |
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