[go: up one dir, main page]

JPH06103134B2 - Evaporator - Google Patents

Evaporator

Info

Publication number
JPH06103134B2
JPH06103134B2 JP26849888A JP26849888A JPH06103134B2 JP H06103134 B2 JPH06103134 B2 JP H06103134B2 JP 26849888 A JP26849888 A JP 26849888A JP 26849888 A JP26849888 A JP 26849888A JP H06103134 B2 JPH06103134 B2 JP H06103134B2
Authority
JP
Japan
Prior art keywords
heat transfer
transfer tube
flow
outlet
evaporator
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 - Fee Related
Application number
JP26849888A
Other languages
Japanese (ja)
Other versions
JPH02115668A (en
Inventor
治 青柳
亮 青木
長生 木戸
広明 加瀬
隆 中邨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP26849888A priority Critical patent/JPH06103134B2/en
Publication of JPH02115668A publication Critical patent/JPH02115668A/en
Publication of JPH06103134B2 publication Critical patent/JPH06103134B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • 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 本発明は、主として空気調和機等に用いられ、気液二相
の冷媒を均等に分配することを構成とする蒸発器に関す
るものである。
TECHNICAL FIELD The present invention relates to an evaporator mainly used in an air conditioner or the like and configured to evenly distribute a gas-liquid two-phase refrigerant.

従来の技術 冷凍サイクルを構成している蒸発器は、小型の場合に
は、冷媒の抵抗が少なく冷媒通路も一流路で良いが、大
型の場合には、冷媒の総流量が増し、一つの流路では抵
抗が大きくなるため複数の流路にしなければならない。
すなわち、一般的な冷媒分流は、第5図に示すように冷
媒がD側より入り、入口側分流器12を通り、入口側伝熱
管11に分流され、熱交換器内を通り、出口側分流器2を
経てC側に導かれる。
2. Description of the Related Art When the evaporator that constitutes a refrigeration cycle is small, the resistance of the refrigerant is small and only one flow path is required for the evaporator, but when it is large, the total flow rate of the refrigerant increases and one Since the road has a large resistance, it is necessary to use a plurality of flow paths.
That is, as shown in FIG. 5, the general refrigerant distribution is such that the refrigerant enters from the D side, passes through the inlet-side distributor 12 and is distributed to the inlet-side heat transfer tube 11, passes through the heat exchanger, and exit-side distributor. It is guided to the C side via the container 2.

従来の分流器の基本構成を第6図に示す。冷媒は、D側
より流入し、入口側分流器12内のコイルバネ8により、
気液が混合され、E側へ伝熱管11より流出する。
FIG. 6 shows the basic configuration of a conventional shunt. The refrigerant flows in from the D side, and by the coil spring 8 in the inlet side flow divider 12,
The gas and liquid are mixed and flow out from the heat transfer tube 11 to the E side.

発明が解決しようとする課題 しかしながら蒸発器入口の気液二相の冷媒では、分流器
が垂直である場合、第6図のコイルバネ8による旋回流
の気液混合の効果は、分流器上部までは達しにくく、下
部に液相、上部に気相が流れやすく、不均一な分流状態
となってしまう。
However, in the gas-liquid two-phase refrigerant at the inlet of the evaporator, when the flow distributor is vertical, the effect of the gas-liquid mixing of the swirling flow by the coil spring 8 in FIG. It is difficult to reach, and the liquid phase flows easily in the lower part and the gas phase flows in the upper part, resulting in a non-uniform shunt state.

そのため、熱交換器の能力を有効に発揮し得ず、現実
は、所定を確保するため、やや大きめの熱交換器を使用
しなければならない。
Therefore, the ability of the heat exchanger cannot be effectively exhibited, and in reality, a slightly larger heat exchanger must be used in order to secure the predetermined value.

本発明は、上記課題に鑑み、熱交換器(蒸発器)を出る
冷媒の層流化を防止し、気液混合状態で流れるようにす
ることを目的とするものである。
The present invention has been made in view of the above problems, and an object of the present invention is to prevent a laminar flow of a refrigerant exiting a heat exchanger (evaporator) so that the refrigerant flows in a gas-liquid mixed state.

課題を解決するための手段 そこで、上記課題を解決するための技術的な手段は、熱
交換器入口側より出口側の方が気相の割合が大きいこと
を利用し、出口側に絞り部を設け、冷媒を均等に分流す
るものである。
Therefore, a technical means for solving the above problem is to utilize the fact that the proportion of the gas phase is larger on the outlet side than on the inlet side of the heat exchanger, and the throttle portion is arranged on the outlet side. It is provided to divide the refrigerant evenly.

作用 かかる構成とすることにより、その作用は以下のように
なる。
Action With this configuration, the action is as follows.

冷媒の気体と液体の重量比は数十倍から数百倍であり、
気液二相の分離は偏流の大きな理由の1つである。熱交
換器の出口側に絞り部を設けることで流量の多い流路を
絞ると、流量の少ない流路に多くの冷媒が流れ込み、こ
の流路を絞ることでまた流量の少ない次の流路に多くの
冷媒が流れ込む。このようにして、熱交換器の伝熱管の
出口側に絞り部を設けることで、冷媒を均等に分流する
ことができる。
The weight ratio of the refrigerant gas to the liquid is several tens to several hundreds of times,
Separation of gas-liquid two phases is one of the main reasons for drift. When a flow passage with a large flow rate is narrowed by providing a throttle on the outlet side of the heat exchanger, a large amount of refrigerant flows into the flow passage with a small flow volume, and by narrowing this flow passage, the next flow passage with a small flow volume is formed. Many refrigerants flow in. In this way, by providing the throttle portion on the outlet side of the heat transfer tube of the heat exchanger, the refrigerant can be evenly divided.

実施例 以下、本発明の一実施例を第1図〜第4図に基づいて説
明する。
Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

まず、第1の実施例を第1図に基づいて説明する。First, a first embodiment will be described with reference to FIG.

同図において1は伝熱管、2は出口側分流器、3は伝熱
管の急縮小による絞り部である。
In the figure, 1 is a heat transfer tube, 2 is an outlet-side flow diverter, and 3 is a throttle portion due to the rapid reduction of the heat transfer tube.

上記構成によれば、熱交換器の出口側であるA側から流
入した冷媒は絞り部3を通り、出口側分流器2内(B)
で合流し、C側へ導かれる。A側より流入する冷媒は、
絞り部3による絞り効果により、ここで圧力損失を生じ
る。気相と液相との圧力損失を比較した場合、体積速度
の速い気相の方が著しく大きい。これにより仮に偏流が
生じていても、気相部の多い流路は圧力損失が大きいた
め、気相部は多流路へと流れ込む。これにより、冷媒は
略均等に分流される。
According to the above configuration, the refrigerant that has flowed in from the A side, which is the outlet side of the heat exchanger, passes through the throttle portion 3 and inside the outlet side flow divider 2 (B).
Merges at and is led to the C side. The refrigerant flowing from the A side is
Due to the throttling effect of the throttling portion 3, a pressure loss occurs here. When the pressure loss between the gas phase and the liquid phase is compared, the gas phase with a high volume velocity is significantly larger. As a result, even if a drift occurs, the flow path with many gas phase portions has a large pressure loss, so the gas phase portions flow into the multiple flow paths. As a result, the refrigerant is divided almost evenly.

次に、本発明の他の実施例を第2図に基づいて説明す
る。
Next, another embodiment of the present invention will be described with reference to FIG.

同図において、1は伝熱管、2は出口側分流器、4は円
筒状部材である。
In the figure, 1 is a heat transfer tube, 2 is an outlet side flow divider, and 4 is a cylindrical member.

上記構成によれば、熱交換器の出口側であるA側から流
入した流体は円筒状部材4による絞り部を通り、出口側
分流器2内のBで合流し、C側へ導かれる。
According to the above configuration, the fluids that have flowed in from the A side, which is the outlet side of the heat exchanger, pass through the constriction formed by the cylindrical member 4, merge at B in the outlet side flow divider 2, and are guided to the C side.

円筒状部材4により、伝熱管1を大きく変形させること
なく絞り部を形成することができるため、耐圧性に優れ
た形状となる。
Since the cylindrical member 4 can form the narrowed portion without significantly deforming the heat transfer tube 1, it has a shape with excellent pressure resistance.

さらに本発明の他の実施例を第3図に基づいて説明す
る。
Further, another embodiment of the present invention will be described with reference to FIG.

同図において1は伝熱管、2は出口側分流器、5は、伝
熱管内の流体の流れ方向と順方向に径が連続的に縮小す
ることにより絞り効果が得られるノズル部である。
In the figure, 1 is a heat transfer tube, 2 is an outlet-side flow divider, and 5 is a nozzle section that obtains a throttling effect by continuously reducing the diameter in the forward direction of the flow direction of the fluid in the heat transfer tube.

上記構成によれば、熱交換器の出口側であるA側から流
入した流体はノズル部5を通り、出口側分流器2内のB
で合流し、C側へ導かれる。
According to the above configuration, the fluid flowing in from the A side, which is the outlet side of the heat exchanger, passes through the nozzle portion 5 and flows into the B in the outlet side flow divider 2.
Merges at and is led to the C side.

蒸発器の前記流体出口部の伝熱管末端を縮管加工するこ
とにより容易に絞り効果が得られる。
By reducing the end of the heat transfer tube at the fluid outlet of the evaporator, the throttling effect can be easily obtained.

さらに本発明の実施例を第4図に基づいて説明する。Further, an embodiment of the present invention will be described based on FIG.

同図において、1は伝熱管、2は前記出口側分流器、7
は伝熱管の開口部を減ずるように挿入された円柱状の部
材である。
In the figure, 1 is a heat transfer tube, 2 is the outlet side flow divider, 7
Is a cylindrical member inserted so as to reduce the opening of the heat transfer tube.

上記構成によれば、熱交換器出口側であるA側から流入
した流体は出口側分流器2の内壁と挿入された円柱部材
7の外壁の間のB部を通り、C側へ導かれる。
According to the above configuration, the fluid flowing in from the A side which is the outlet side of the heat exchanger passes through the B portion between the inner wall of the outlet side flow divider 2 and the outer wall of the inserted cylindrical member 7 and is guided to the C side.

これにより、第1図を基に説明した理由により、前記流
体は、略均等に分流される。また、分流器内容積が流体
の循環量にくらべ、大きすぎると、液留り現象が生じ、
冷凍サイクルが安定しない場合がある。円柱部材7によ
り分流器内容積を減らすことができ、液留り現象を防止
できる効果も合わせて有する。
As a result, the fluid is diverted substantially evenly for the reason described with reference to FIG. In addition, if the internal volume of the flow distributor is too large compared to the circulation amount of the fluid, a liquid retention phenomenon may occur,
The refrigeration cycle may not be stable. The columnar member 7 can reduce the internal volume of the flow distributor, and also has the effect of preventing the liquid retention phenomenon.

発明の効果 上記実施例から明らかなように本発明は、蒸発器を構成
する出口側分流器直前または出口側分流器内に絞り部又
は抵抗部を設けることにより、伝熱管内を流れる二相流
体の均一な分流状態が得られ、蒸発器の性能を最大限に
生かせる効果が得られる。
EFFECTS OF THE INVENTION As is apparent from the above-described embodiments, the present invention provides a two-phase fluid flowing in the heat transfer tube immediately before the outlet-side flow divider constituting the evaporator or by providing the throttle portion or the resistance portion in the outlet-side flow divider. A uniform split flow state of is obtained, and the effect of maximizing the performance of the evaporator can be obtained.

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

第1図は本発明の第1の実施例の伝熱器とこれに接続す
る分流器の断面図、第2図は本発明の第2の実施例の伝
熱管とこれに接続する分流器の断面図、第3図は本発明
の第3の実施例の伝熱管とこれに接続する分流器の断面
図、第4図は本発明の第4の実施例の分流器とこれに接
続する伝熱管の断面図、第5図は分流器を具備した熱交
換器の要部斜視図、第6図は従来例を示す分流器の断面
図である。 1……出口側伝熱管、2……出口側分流器、3……絞り
部、4……円筒状部材、5……ノズル部、7……円柱状
部材。
FIG. 1 is a cross-sectional view of a heat exchanger according to a first embodiment of the present invention and a flow distributor connected thereto, and FIG. 2 is a heat transfer tube according to a second embodiment of the present invention and a flow distributor connected thereto. A sectional view, FIG. 3 is a sectional view of a heat transfer tube and a flow divider connected thereto according to a third embodiment of the present invention, and FIG. 4 is a flow divider according to a fourth embodiment of the present invention and a transmission connected thereto. FIG. 5 is a sectional view of a heat pipe, FIG. 5 is a perspective view of a main part of a heat exchanger having a flow distributor, and FIG. 6 is a cross-sectional view of a flow distributor showing a conventional example. 1 ... Exit side heat transfer tube, 2 ... Exit side flow divider, 3 ... Throttle section, 4 ... Cylindrical member, 5 ... Nozzle section, 7 ... Cylindrical member.

フロントページの続き (72)発明者 青木 亮 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 木戸 長生 大阪府東大阪市高井田本通3丁目22番地 松下冷機株式会社内 (72)発明者 加瀬 広明 大阪府東大阪市高井田本通3丁目22番地 松下冷機株式会社内 (72)発明者 中邨 隆 大阪府大阪市城東区今福西6丁目2番61号 松下精工株式会社内 (56)参考文献 特開 昭63−268485(JP,A) 特開 昭56−68766(JP,A) 実開 昭56−148572(JP,U)Front page continuation (72) Inventor Ryo Aoki 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. 72) Inventor Hiroaki Kase 3-22 Takada Hon-dori, Higashi-Osaka City, Osaka Prefecture Matsushita Refrigerator Co., Ltd. 56) References JP-A-63-268485 (JP, A) JP-A-56-68766 (JP, A) Actually developed JP-A-56-148572 (JP, U)

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】一定間隔で平行に並べられ、その間を気体
が流動するフィンと前記フィンに密着し、内部を流体が
通過する伝熱管と前記伝熱管の流体の入口側と出口側と
に設けられた分流器より構成され、前記出口側分流器直
前の伝熱管径を縮小し、絞り部を設けた蒸発器。
1. A heat transfer tube, which is arranged in parallel at a constant interval and is in close contact with the fins through which gas flows, and through which a fluid passes, and an inlet side and an outlet side of the fluid of the heat transfer tube. An evaporator having a heat exchanger tube diameter immediately before the outlet side flow divider and having a throttle portion.
【請求項2】出口側分流器直前の伝熱管内に円筒状の部
材を挿入した特許請求の範囲第(1)項記載の蒸発器。
2. The evaporator according to claim 1, wherein a cylindrical member is inserted into the heat transfer tube immediately before the outlet-side flow divider.
【請求項3】伝熱管の出口端で径を流体の流れと順方向
に連続的に縮小し、絞り部を設けた特許請求の範囲第
(1)項記載の蒸発器。
3. The evaporator according to claim 1, wherein the diameter of the heat transfer tube is continuously reduced in the forward direction with the flow of the fluid at the outlet end of the heat transfer tube, and a throttle portion is provided.
【請求項4】出口側分流器内に伝熱管の出口開口部近傍
に位置しかつその開口部を減ずるような円柱状部材を挿
入した特許請求の範囲第(1)項記載の蒸発器。
4. The evaporator according to claim 1, wherein a columnar member located in the vicinity of the outlet opening of the heat transfer tube and reducing the opening is inserted in the outlet side flow divider.
JP26849888A 1988-10-25 1988-10-25 Evaporator Expired - Fee Related JPH06103134B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26849888A JPH06103134B2 (en) 1988-10-25 1988-10-25 Evaporator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26849888A JPH06103134B2 (en) 1988-10-25 1988-10-25 Evaporator

Publications (2)

Publication Number Publication Date
JPH02115668A JPH02115668A (en) 1990-04-27
JPH06103134B2 true JPH06103134B2 (en) 1994-12-14

Family

ID=17459334

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26849888A Expired - Fee Related JPH06103134B2 (en) 1988-10-25 1988-10-25 Evaporator

Country Status (1)

Country Link
JP (1) JPH06103134B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030092541A (en) * 2002-05-30 2003-12-06 위니아만도 주식회사 Condenser for aircon-system
JP5562649B2 (en) * 2007-01-30 2014-07-30 ブラッドレー・ユニバーシティ Heat transfer device
GB0905870D0 (en) * 2009-04-03 2009-05-20 Eaton Williams Group Ltd A rear door heat exchanger
JP5306290B2 (en) * 2010-06-22 2013-10-02 リンナイ株式会社 Combustion device

Also Published As

Publication number Publication date
JPH02115668A (en) 1990-04-27

Similar Documents

Publication Publication Date Title
US6179051B1 (en) Distributor for plate heat exchangers
CN102859299B (en) Fluid distributor and the environmental control system being provided with fluid distributor
US12044480B2 (en) Heat exchanger and air-conditioning apparatus including the same
CA2381214C (en) Heat exchanger inlet tube with flow distributing turbulizer
EP1328766B1 (en) Heat exchangers with flow distributing orifice partitions
JPH02219966A (en) Refrigerant flow divider
JP2008528941A (en) Small channel heat exchanger header
JP2001255095A (en) Heat exchanger
JP4084883B2 (en) Gas-liquid two-phase distributor
JPH04295599A (en) Heat exchanger
JPH0737865B2 (en) Shunt
JPH08233409A (en) Shunt
JPH06103134B2 (en) Evaporator
US5979547A (en) Distribution device capable of uniformly distributing a medium to a plurality of tubes of a heat exchanger
JPH03177761A (en) Heat exchanger
JPH085195A (en) Heat exchanger
JPH11325656A (en) Header flow divider
JP2574488B2 (en) Heat exchanger
JPH0810096B2 (en) Evaporator
JPH01121667A (en) Refrigerant flow diverter
JPH0498055A (en) Refrigerant flow divider
JPH05203285A (en) Heat exchanger
JP3326930B2 (en) Refrigerant shunt
JPH01123963A (en) Refrigerant diverter
JPH0498056A (en) Refrigerant flow divider

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees