JPH094995A - Header - Google Patents
HeaderInfo
- Publication number
- JPH094995A JPH094995A JP7151552A JP15155295A JPH094995A JP H094995 A JPH094995 A JP H094995A JP 7151552 A JP7151552 A JP 7151552A JP 15155295 A JP15155295 A JP 15155295A JP H094995 A JPH094995 A JP H094995A
- Authority
- JP
- Japan
- Prior art keywords
- header
- flow path
- main pipe
- pipe flow
- metal plates
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
- F28F9/0263—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by varying the geometry or cross-section of header box
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
- F28D2021/0071—Evaporators
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は冷凍機器や空調機器等に
用いられる熱交換器に取り付けられるヘッダーに関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a header attached to a heat exchanger used in refrigeration equipment, air conditioning equipment and the like.
【０００２】[0002]
【従来の技術】近年、冷凍空調機器における蒸発器は小
型化の要請から、伝熱管は小径化され、管内抵抗を低減
する為に流路数を増している。蒸発器の能力を最大限に
発揮する為に冷媒を適切な比率に分流、合流するヘッダ
ーが必要になる。2. Description of the Related Art In recent years, due to the demand for miniaturization of evaporators in refrigeration and air conditioning equipment, the diameter of heat transfer tubes has been reduced, and the number of flow paths has been increased in order to reduce the resistance inside the tubes. In order to maximize the capacity of the evaporator, a header that divides and joins the refrigerant at an appropriate ratio is required.
【０００３】以下、特開平５ー２６４１２６号公報に示
される従来のヘッダーを図７から図８を用いて説明す
る。A conventional header disclosed in Japanese Patent Laid-Open No. 5-264126 will be described below with reference to FIGS. 7 to 8.
【０００４】図７は従来のヘッダーの断面図である。図
７において、３１はヘッダーである。３２は長手方向に
おいて伝熱管接続口３３が複数設けられた円筒管で、管
端封止仕切材３４で一端が封止されている。３５は伝熱
管で円筒管３２の伝熱管接続口３３に接続されている。
３６は円筒管３２下部の流出入部で、流出入部３６には
流出入管３６ａが接続されている。３７は円筒管３２内
部に挿入されたテーパー状の挿入部材である。FIG. 7 is a sectional view of a conventional header. In FIG. 7, 31 is a header. Reference numeral 32 denotes a cylindrical tube provided with a plurality of heat transfer tube connection ports 33 in the longitudinal direction, one end of which is sealed by a tube end sealing partition member 34. A heat transfer tube 35 is connected to the heat transfer tube connection port 33 of the cylindrical tube 32.
Reference numeral 36 denotes an inflow / outflow portion of the lower portion of the cylindrical pipe 32, and an inflow / outflow pipe 36 a is connected to the inflow / outflow portion 36. Reference numeral 37 is a tapered insertion member inserted in the cylindrical tube 32.
【０００５】図８は挿入部材３７の斜視図であり、挿入
部材３７は円柱を切削加工して製作されており、長手方
向に漸次断面積が大きくなっている。FIG. 8 is a perspective view of the insert member 37. The insert member 37 is manufactured by cutting a cylinder, and its cross-sectional area gradually increases in the longitudinal direction.
【０００６】以上のように構成されたヘッダー３１につ
いてその作用を蒸発器（図示せず）の冷媒入口側すなわ
ち分流器として用いられた場合について説明する。The operation of the header 31 constructed as described above will be described when it is used as a refrigerant inlet side of an evaporator (not shown), that is, as a flow divider.
【０００７】従来のヘッダー３１では、流出入管３６ａ
から円筒管３２に流入した気液二相状態の冷媒は漸次大
きくなる挿入部材３６が挿入されている為に冷媒流路断
面積はしだいに減少し、冷媒流速は極端に減少すること
はない。In the conventional header 31, the inflow / outflow pipe 36a
The refrigerant in the gas-liquid two-phase state that has flowed into the cylindrical pipe 32 from is gradually decreased due to the insertion of the insertion member 36 that gradually increases, and the refrigerant flow velocity does not decrease extremely.
【０００８】この為、冷媒は円筒管３２内で気相と液相
が分離することなく各伝熱管３５に気相と液相の量が均
等に流出することができる。Therefore, the refrigerant can flow out into the heat transfer tubes 35 in equal amounts in the vapor phase and the liquid phase without separating the vapor phase and the liquid phase in the cylindrical tube 32.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら上記従来
のヘッダー３１は、挿入部材３７が円柱を切削加工して
つくられている為に挿入部材３７の加工に時間がかかる
ことと、円筒管３２と挿入部材３７との接合は一般にろ
う付けが行われるが、中実の挿入部材の加熱時間は長く
必要であることで、製造コストが高くなる。However, in the above-mentioned conventional header 31, since the insertion member 37 is formed by cutting a cylindrical shape, it takes a long time to process the insertion member 37, and the insertion of the cylindrical tube 32 and the insertion member 37. The joining with the member 37 is generally performed by brazing, but since the heating time of the solid insertion member is long, the manufacturing cost becomes high.
【００１０】また、上記従来のヘッダー３１は、各伝熱
管３５において蒸発器の出口側で合流するまでの冷媒の
圧力損失や熱負荷が均等の場合には、ヘッダー３１での
均等分流が可能で蒸発器の能力を最大限に発揮できる
が、前記圧力損失が大幅に不均等の場合には均等分流で
きない。しかも、各伝熱管３５への熱負荷が極端に不均
等な場合には各伝熱管３５への分流量も熱負荷に応じた
最適分流比が存在し、必ずしも均等が好ましいとは限ら
ない。熱負荷が多い伝熱管３５には比較的多くの冷媒を
分流する必要があり、逆に熱負荷が少ない伝熱管３５に
は比較的少ない冷媒を分流させることが好ましい。この
ような場合、均等分流を狙いにした従来のヘッダー３１
では不均等な最適分流比に制御することは難しい。Further, in the conventional header 31, even if the pressure loss and the heat load of the refrigerant until the heat transfer tubes 35 meet at the outlet side of the evaporator are equal, the header 31 can be divided evenly. The capacity of the evaporator can be maximized, but if the pressure loss is largely uneven, uniform diversion cannot be performed. In addition, when the heat load on each heat transfer tube 35 is extremely uneven, the split flow rate to each heat transfer tube 35 has an optimum flow splitting ratio according to the heat load, and equality is not always preferable. It is necessary to divert a relatively large amount of refrigerant to the heat transfer tube 35 having a large heat load, and it is preferable to divert a relatively small amount of refrigerant to the heat transfer tube 35 having a small heat load. In such a case, the conventional header 31 aiming at uniform distribution
Therefore, it is difficult to control the unequal optimum flow division ratio.
【００１１】本発明は上記従来の課題を解決するもの
で、短時間で容易に製作できる部品点数の少ない安価な
ヘッダーを提供するものである。The present invention solves the above-mentioned conventional problems, and provides an inexpensive header with a small number of parts that can be easily manufactured in a short time.
【００１２】また、各伝熱管の圧力損失が互いに異なる
場合でも各伝熱管の熱負荷に応じた分流比制御も容易に
可能となるヘッダーを提供するものである。Further, the present invention provides a header that can easily control the split flow ratio according to the heat load of each heat transfer tube even when the pressure loss of each heat transfer tube is different from each other.
【００１３】[0013]
【課題を解決するための手段】上記従来の課題を解決す
るために本発明のヘッダーは、２枚の金属板をはりあわ
せ、これら金属板の少なくとも一方を膨管加工すること
で両金属板の間に流路を形成し、この流路は一端を流出
入部とし他端を封止した主管流路と、この主管流路に一
端を連通し他端を前記金属板の周縁部に開口した複数の
支管流路とから構成され、前記主管流路は一端の流出入
部から他端側に向けて少なくとも部分的には流路断面積
が縮小するテーパー部を有しているのである。In order to solve the above-mentioned conventional problems, the header of the present invention has a structure in which two metal plates are attached to each other and at least one of the metal plates is subjected to a swelling process to form a space between the metal plates. A flow path is formed, and the flow path has a main pipe flow path having one end as an inflow / outflow portion and the other end sealed, and a plurality of branch pipes having one end communicating with the main pipe flow path and the other end opening to the peripheral portion of the metal plate. The main pipe flow passage has a taper portion in which the cross-sectional area of the flow passage is reduced at least partially from the inflow / outflow portion at one end toward the other end.
【００１４】また、本発明のヘッダーは、２枚の金属板
をはりあわせ、これら金属板の少なくとも一方を膨管加
工することで両金属板の間に流路を形成し、この流路は
一端を流出入部とし他端を封止した主管流路と、この主
管流路に一端を連通し他端を前記金属板の周縁部に開口
した複数の支管流路とから構成され、前記支管流路の途
中に毛細管流路を有しているのである。Further, in the header of the present invention, two metal plates are attached to each other, and at least one of the metal plates is expanded to form a flow path between the two metal plates. One end of this flow path flows out. A main pipe flow path having an inlet portion and the other end sealed, and a plurality of branch pipe flow passages having one end communicating with the main pipe flow passage and the other end opening to the peripheral portion of the metal plate, in the middle of the branch pipe flow passage It has a capillary channel.
【００１５】また、本発明のヘッダーは、２枚の金属板
をはりあわせ、これら金属板の少なくとも一方を膨管加
工することで両金属板の間に流路を形成し、この流路は
一端を流出入部とし他端を封止した主管流路と、この主
管流路に一端を連通し他端を前記金属板の周縁部に開口
した複数の支管流路とから構成され、前記支管流路の途
中に毛細管流路を有しており、このはり合わされた金属
板は湾曲しているのである。Further, in the header of the present invention, two metal plates are attached to each other, and at least one of the metal plates is expanded to form a flow path between the two metal plates. One end of this flow path flows out. A main pipe flow path having an inlet portion and the other end sealed, and a plurality of branch pipe flow passages having one end communicating with the main pipe flow passage and the other end opening to the peripheral portion of the metal plate, in the middle of the branch pipe flow passage Has a capillary channel, and the metal plates bonded together are curved.
【００１６】[0016]
【作用】本発明のヘッダーは、２枚の金属板をはりあわ
せ、これら金属板の少なくとも一方を膨管加工すること
で両金属板の間に、流路断面積が縮小するテーパー部を
有する主管流路を形成するので、主管流路の断面積を任
意に容易に設定して、主管流路断面積をしだいに減少さ
せることが可能で、短時間で容易に製作でき、部品点数
も少なく安価にできる。In the header of the present invention, two metal plates are attached to each other, and at least one of the metal plates is subjected to a swelling process to form a main pipe passage having a tapered portion between the two metal plates, the cross-sectional area of which is reduced. Since it is possible to easily set the cross-sectional area of the main pipe flow channel arbitrarily and gradually reduce the cross-sectional area of the main pipe flow channel, it can be easily manufactured in a short time, the number of parts is small, and the cost can be reduced. .
【００１７】また、本発明のヘッダーは、２枚の金属板
をはりあわせ、これら金属板の少なくとも一方を膨管加
工することで両金属板の間に、途中に毛細管流路を有す
る支管流路を形成するので、短時間で容易に製作でき、
部品点数も少なく安価にできるとともに、容易に適切な
管内抵抗を付与でき、分流比制御も容易に可能となるヘ
ッダーを提供するものである。Further, in the header of the present invention, two metal plates are attached to each other, and at least one of the metal plates is expanded to form a branch pipe passage having a capillary passage in the middle between the two metal plates. Therefore, it can be easily manufactured in a short time,
(EN) A header that has a small number of parts, can be manufactured at low cost, can easily provide an appropriate pipe resistance, and can easily control a diversion ratio.
【００１８】また、本発明のヘッダーは、２枚の金属板
をはりあわせ、これら金属板の少なくとも一方を膨管加
工することで両金属板の間に、途中に毛細管流路を有す
る支管流路を形成流路を形成し、はり合わされた金属板
を全体として湾曲したことで、短時間で容易に製作で
き、部品点数も少なく安価にできるとともに、容易に適
切な管内抵抗を付与でき、大幅な分流比制御も容易に可
能となる上に小型のヘッダーを提供するものである。Further, in the header of the present invention, two metal plates are attached to each other, and at least one of the metal plates is expanded to form a branch pipe passage having a capillary passage in the middle between the two metal plates. By forming a flow path and bending the laminated metal plate as a whole, it can be easily manufactured in a short time, the number of parts can be reduced and the cost can be reduced, and an appropriate pipe resistance can be easily given. It is easy to control and provides a small header.
【００１９】[0019]
【実施例】以下、本発明の第１の実施例のヘッダーにつ
いて、図面を参照しながら説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS A header according to a first embodiment of the present invention will be described below with reference to the drawings.
【００２０】図１は本発明の第１の実施例のヘッダーの
平面図で、図２は図１のＡ−Ａ線断面図である。FIG. 1 is a plan view of a header of a first embodiment of the present invention, and FIG. 2 is a sectional view taken along the line AA of FIG.
【００２１】図１と図２において、１は２枚の銅板１
ａ，１ｂを接合したヘッダーで、円管状の主管流路２と
複数の支管流路３とを備えている。支管流路３は主管流
路２の片辺に一端を連通し、他端はヘッダー１の周縁部
に開口している。In FIGS. 1 and 2, reference numeral 1 is two copper plates 1
It is a header in which a and 1b are joined together, and has a circular main pipe flow passage 2 and a plurality of branch pipe passages 3. The branch pipe flow path 3 has one end communicating with one side of the main pipe flow path 2 and the other end opening to the peripheral portion of the header 1.
【００２２】また、主管流路２においてはテーパー部２
ａを構成しており、主管流路２の流路断面積はヘッダー
下端の周縁に開口した流出入部２ｂから他端の上部に向
けて流路断面積が縮小する。Further, in the main pipe channel 2, the taper portion 2
a, and the flow passage cross-sectional area of the main pipe flow passage 2 decreases from the inflow / outflow portion 2b opened at the peripheral edge of the lower end of the header toward the upper portion of the other end.
【００２３】ここで、銅板１ａ，１ｂに形成された主管
流路２や支管流路３は、銅板１ａ，１ｂを接合した後、
あらかじめ不接合処理を施した流路部分を加圧して膨管
するか、あらかじめプレス等により流路部分を成形した
銅板１ａ，１ｂを接合してもよい。Here, the main pipe passage 2 and the branch pipe passage 3 formed in the copper plates 1a and 1b are joined together after the copper plates 1a and 1b are joined.
It is also possible to pressurize the flow path portion that has been subjected to the non-bonding treatment in advance to expand the tube, or to join the copper plates 1a and 1b having the flow path portion formed by a press or the like in advance.
【００２４】以上のように構成されたヘッダー１につい
てその作用を蒸発器（図示せず）の冷媒入口側すなわち
分流器として用いられた場合について説明する。The operation of the header 1 constructed as described above will be described when it is used as a refrigerant inlet side of an evaporator (not shown), that is, as a flow divider.
【００２５】流出入部２ｂから主管流路２に流入した気
液二相状態の冷媒は、漸次支管流路３に流出し、主管流
路２の上部程冷媒質量流量は減少していく。しかし、主
管流路２はテーパー部２ａを有している為に流路断面積
ははしだいに減少し、冷媒流速は極端に減少することは
ない。The gas-liquid two-phase refrigerant flowing from the inflow / outflow portion 2b into the main pipe flow path 2 gradually flows out into the branch pipe flow path 3, and the refrigerant mass flow rate decreases toward the upper part of the main pipe flow path 2. However, since the main pipe flow passage 2 has the tapered portion 2a, the flow passage cross-sectional area gradually decreases, and the refrigerant flow velocity does not extremely decrease.
【００２６】この為、気液二相状態の冷媒は主管流路２
内で気相と液相が分離することなく各支管流路３に気相
と液相の量が均等に流出することができる。Therefore, the refrigerant in the gas-liquid two-phase state is supplied to the main pipe passage 2
The amounts of the gas phase and the liquid phase can be evenly flowed into each branch pipe flow path 3 without separating the gas phase and the liquid phase therein.
【００２７】以上のように本実施例のヘッダー１は気液
二相冷媒を均等に分流させる目的で主管流路２の流路断
面積をしだいに減少させるために、銅板１ａ，１ｂをは
りあわせ、これらを膨管加工することで両銅板１ａ，１
ｂの間に流路を形成している。この主管流路２は流路断
面積が縮小するテーパー部２ａを有しており、銅板１
ａ，１ｂの接合は炉中ろう付けや、圧延によって一連の
工程で行うので部品点数も少なく工数も少なくて済む。
また、部品点数も工数も増すことなく任意の形状のテー
パー部２ａを形成できる。As described above, in the header 1 of this embodiment, the copper plates 1a and 1b are joined together in order to gradually reduce the flow passage cross-sectional area of the main pipe flow passage 2 for the purpose of evenly dividing the gas-liquid two-phase refrigerant. , By expanding them, both copper plates 1a, 1
A flow path is formed between b. The main pipe flow passage 2 has a taper portion 2a having a reduced flow passage cross-sectional area.
Since the joining of a and 1b is performed in a series of steps by furnace brazing or rolling, the number of parts is small and the number of steps is also small.
Further, the tapered portion 2a having an arbitrary shape can be formed without increasing the number of parts and the number of steps.
【００２８】また、主管流路２と支管流路３とはろう付
けされていないので、蒸発器にろう付けする際にもその
部分が溶解する心配がなく支管流路３を短くでき、ヘッ
ダー１を小型化できる。Further, since the main pipe flow passage 2 and the branch pipe flow passage 3 are not brazed, the branch pipe flow passage 3 can be shortened without fear of melting of the portion when brazing to the evaporator, and the header 1 Can be downsized.
【００２９】以下、本発明の第２の実施例のヘッダーに
ついて、図面を参照しながら説明する。The header of the second embodiment of the present invention will be described below with reference to the drawings.
【００３０】図３は第２実施例のヘッダーの平面図で、
図４は図２のＢ−Ｂ線断面図である。FIG. 3 is a plan view of the header of the second embodiment.
FIG. 4 is a sectional view taken along line BB in FIG.
【００３１】図３と図４において、１１は２枚の銅板１
１ａ，１１ｂを接合したヘッダーで、円管状の主管流路
１２と複数の支管流路１３とを備えている。支管流路１
３は主管流路１２の片辺に一端を連通し、他端はヘッダ
ー１１の周縁部に開口している。支管流路１３は開口部
を除いて蛇行した流路断面積が１０mm2以下の毛細管流
路１３ａを有し、毛細管流路１３ａからテーパー状に流
路断面積が拡大して２０mm2以上となり、開口部となっ
ている。開口部には蒸発器の伝熱管（図示せず）が挿
入、ろう付けされることになる。In FIG. 3 and FIG. 4, 11 is two copper plates 1
The header 1a and 11b are joined to each other, and include a circular main pipe flow passage 12 and a plurality of branch pipe flow passages 13. Branch channel 1
3 has one end communicating with one side of the main pipe flow path 12, and the other end is open to the peripheral portion of the header 11. The branch flow channel 13 has a capillary flow channel 13a having a meandering flow channel cross-sectional area of 10 mm 2 or less excluding the opening, and the flow channel cross-sectional area is expanded from the capillary flow channel 13a in a tapered shape to 20 mm 2 or more. It is an opening. A heat transfer tube (not shown) of the evaporator is inserted and brazed into the opening.
【００３２】ここで、銅板１１ａ，１１ｂに形成された
主管流路１２や支管流路１３は銅板１１ａ，１１ｂを接
合した後、あらかじめ不接合処理を施した流路部分を加
圧して膨管するか、あらかじめプレス等により流路部分
を成形した銅板１１ａ，１１ｂを接合してもよい。Here, after joining the copper plates 11a and 11b, the main pipe flow passage 12 and the branch pipe flow passages 13 formed in the copper plates 11a and 11b are expanded by pressurizing the flow passage portions that have been subjected to the non-bonding treatment in advance. Alternatively, the copper plates 11a and 11b whose flow path portions have been previously formed by pressing may be joined.
【００３３】以上のように構成されたヘッダー１１につ
いてその作用を蒸発器（図示せず）の冷媒入口側すなわ
ち分流器として用いられた場合について説明する。The operation of the header 11 configured as described above will be described when it is used as a refrigerant inlet side of an evaporator (not shown), that is, as a flow divider.
【００３４】流出入部１２ａから主管流路１２に流入し
た気液二相状態の冷媒は漸次支管流路１３に流出してい
く。ここで、支管流路１３には毛細管流路１３ａを有し
ており、各支管流路１３は管内抵抗が付与されることに
なる。ヘッダー１１で分流する冷媒は蒸発器の出口側合
流器（図示せず）との間の圧力損失が各流路で同一とな
るように各支管流路１３への流量が決定される。従って
各支管流路１３に十分に管内抵抗を付与している為、分
流量が安定して一定となる。The gas-liquid two-phase refrigerant flowing from the inflow / outflow portion 12a into the main pipe flow passage 12 gradually flows out into the branch pipe flow passage 13. Here, the branch channel 13 has a capillary channel 13a, and each branch channel 13 is given internal resistance. The flow rate of the refrigerant branched in the header 11 to each branch pipe flow path 13 is determined so that the pressure loss between the refrigerant and the outlet side combiner (not shown) of the evaporator is the same in each flow path. Therefore, since sufficient in-tube resistance is given to each branch tube flow path 13, the divided flow rate becomes stable and constant.
【００３５】また、蒸発器の各流路の熱負荷が異なり各
支管流路１３への冷媒流量を互いに変えた方が適切な場
合も、各毛細管流路１３ａの流路長さや流路径も容易に
変えられるので、各々の支管流路１３への流量比も適切
に制御できる。Even when the heat load of each flow path of the evaporator is different and it is appropriate to change the refrigerant flow rate to each branch flow path 13, it is easy to change the flow path length and the flow path diameter of each capillary flow path 13a. Therefore, the flow rate ratio to each branch pipe flow path 13 can be appropriately controlled.
【００３６】このとき、主管流路１２内で気液二相状態
の冷媒が下流においても気相と液相が分離することのな
い様に主管流路１２の流路断面積を十分に細く設計して
おり、主管流路１２内での相分離の心配はない。また、
主管流路１２では細く設計している為に下流になるほど
冷媒の若干の圧力低下を招くが、支管流路１３では主管
流路１２での圧力勾配を問題にしない程の大きな管内抵
抗を流路断面積が１０mm2以下の毛細管流路１３ａで付
与しており問題ない。At this time, the flow passage cross-sectional area of the main flow passage 12 is designed to be sufficiently thin so that the gas-liquid two-phase refrigerant in the main flow passage 12 does not separate into the gas phase and the liquid phase even in the downstream. Therefore, there is no concern about phase separation in the main pipe channel 12. Also,
Since the main pipe flow path 12 is designed to be thin, the pressure of the refrigerant is slightly lowered toward the downstream side, but the branch pipe flow path 13 has a large internal resistance that does not cause a pressure gradient in the main pipe flow path 12. There is no problem because the capillary channel 13a having a cross-sectional area of 10 mm 2 or less is provided.
【００３７】以上のように本実施例のヘッダー１１は気
液二相冷媒を均等に分流させる目的で支管流路に適切な
管内抵抗を付与させるために、銅板１１ａ，１１ｂをは
りあわせ、これらを膨管加工することで両銅板１１ａ，
１１ｂの間に流路を形成し、支管流路１３は流路断面積
１０mm2以下の蛇行した毛細管流路１３ａを有したこと
で、短時間で容易に製作でき、部品点数も少なく安価に
できるとともに、容易に適切な管内抵抗を付与でき、分
流比制御も容易に可能となるヘッダーを提供するもので
ある。As described above, in the header 11 of the present embodiment, the copper plates 11a and 11b are attached to each other in order to impart appropriate in-tube resistance to the branch pipe passage for the purpose of evenly dividing the gas-liquid two-phase refrigerant. By expanding the tube, both copper plates 11a,
By forming a flow path between 11b and the branch flow path 13 having a meandering capillary flow path 13a having a flow path cross-sectional area of 10 mm 2 or less, it can be easily manufactured in a short time, the number of parts is small, and the cost can be reduced. At the same time, an appropriate pipe resistance can be easily imparted, and a header that enables easy control of the diversion ratio is also provided.
【００３８】以下、本発明の第３の実施例のヘッダーに
ついて、図面を参照しながら説明する。The header of the third embodiment of the present invention will be described below with reference to the drawings.
【００３９】図５は第３実施例のヘッダーの斜視図で内
部をわかりやすくするために一部切断している。また、
図６は図５のＣ−Ｃ断面図である。FIG. 5 is a perspective view of the header of the third embodiment, with a part cut away for clarity. Also,
FIG. 6 is a sectional view taken along line CC of FIG.
【００４０】図５と図６において、２１は２枚の銅板２
１ａ，２１ｂを接合したヘッダーで、円管状の主管流路
２２と複数の支管流路２３とを備えている。支管流路２
３は主管流路２２の片辺に一端を連通し、他端はヘッダ
ー２１の周縁部に開口している。さらに、支管流路２３
は開口部を除いて直線状の流路断面積が１０mm2以下の
毛細管流路２３ａを有し、毛細管流路２３ａからテーパ
ー状に流路断面積が拡大して２０mm2以上となり、開口
部となっている。開口部には蒸発器の伝熱管（図示せ
ず）が挿入、ろう付けされることになる。そして、ヘッ
ダー２１は全体として毛細管流路２３ａの流路方向に渦
巻き状に湾曲している。In FIG. 5 and FIG. 6, 21 is two copper plates 2
The header 1a and 21b are joined together, and are provided with a circular main pipe flow passage 22 and a plurality of branch pipe flow passages 23. Branch channel 2
3 communicates with one side of the main pipe flow path 22 at one end, and the other end opens at the peripheral edge of the header 21. Furthermore, the branch channel 23
Has a linear flow channel cross-sectional area of 10 mm 2 or less excluding the opening, and the flow channel cross-sectional area is expanded from the capillary flow channel 23 a in a tapered shape to 20 mm 2 or more. Has become. A heat transfer tube (not shown) of the evaporator is inserted and brazed into the opening. The header 21 as a whole is spirally curved in the flow path direction of the capillary flow path 23a.
【００４１】本実施例では毛細管流路２３ａを直線状に
設けているが、蛇行させてもよい。また、本実施例では
ヘッダー３１は全体として渦巻き状に湾曲しているが、
全長が比較的短い場合にはＵ字状に湾曲してもよい。Although the capillary flow path 23a is provided in a straight line in this embodiment, it may be meandered. Further, in this embodiment, the header 31 is curved in a spiral shape as a whole,
If the overall length is relatively short, it may be curved in a U shape.
【００４２】まず平板状の銅板２１ａ，２１ｂに形成さ
れた主管流路２２や支管流路２３は銅板２１ａ，２１ｂ
を接合した後、あらかじめ不接合処理を施した流路部分
を加圧して膨管するか、あらかじめプレス等により流路
部分を成形した銅板２１ａ，２１ｂを接合する。その
後、螺旋状に巻いてヘッダー２１を成形している。First, the main pipe channel 22 and the tributary channel 23 formed on the flat copper plates 21a and 21b are the copper plates 21a and 21b.
After joining, the flow path portion that has been subjected to a non-bonding treatment is pressurized and expanded, or the copper plates 21a and 21b having the flow path portion formed by a press or the like are joined in advance. After that, the header 21 is formed by spirally winding it.
【００４３】以上のように構成されたヘッダー２１につ
いてその作用を蒸発器（図示せず）の冷媒入口側すなわ
ち分流器として用いられた場合について説明する。The operation of the header 21 configured as described above will be described when it is used as a refrigerant inlet side of an evaporator (not shown), that is, as a flow divider.
【００４４】流出入部２２ａから主管流路２２に流入し
た気液二相状態の冷媒は漸次支管流路２３に流出してい
く。The gas-liquid two-phase refrigerant flowing from the inflow / outflow portion 22a into the main pipe passage 22 gradually flows out into the branch pipe passage 23.
【００４５】ここで、支管流路２３には毛細管流路２３
ａを有しており、各支管流路２３は管内抵抗が付与され
ることになる。ヘッダー２１で分流する冷媒は蒸発器の
出口側合流器（図示せず）との間の圧力損失が各流路で
同一となるように各支管流路２３への流量が決定され
る。従って各支管流路２３に十分に管内抵抗を付与して
いる為、分流量が安定して一定となる。Here, the branch channel 23 has a capillary channel 23.
Since it has a, each branch flow path 23 is given internal resistance. The flow rate of the refrigerant split in the header 21 to each branch pipe flow path 23 is determined so that the pressure loss between the refrigerant and the outlet side combiner (not shown) of the evaporator is the same in each flow path. Therefore, since sufficient in-tube resistance is given to each branch tube flow path 23, the divided flow rate becomes stable and constant.
【００４６】さらに、ヘッダー２１は螺旋状に巻かれた
形状となっており、毛細管流路２３ａが長くとも、ヘッ
ダーとしての必要スペースが小さくなっている。Further, the header 21 has a spirally wound shape, and the space required for the header is small even if the capillary channel 23a is long.
【００４７】また、蒸発器の各流路の熱負荷が異なり各
支管流路２３への冷媒流量を互いに変えた方が適切な場
合も、各毛細管流路２３ａを蛇行させて長さを変えた
り、流路径も容易に変えられるので、各々の毛細管流路
２３ａの管内抵抗を変えて各支管流量を各々で容易に制
御できる。Also, when the heat load of each flow path of the evaporator is different and it is appropriate to change the refrigerant flow rate to each branch flow path 23, it is possible to change the length by making each capillary flow path 23a meander. Since the channel diameter can be easily changed, each branch tube flow rate can be easily controlled by changing the in-tube resistance of each capillary channel 23a.
【００４８】このとき、主管流路２２内で気液二相状態
の冷媒が下流においても気相と液相が分離することのな
い様に主管流路２２の流路断面積を十分に細く設計して
おり、主管流路２２内での相分離の心配はない。また、
主管流路２２では細く設計している為に下流になるほど
冷媒の若干の圧力低下を招くが、支管流路２３では主管
流路２２での圧力勾配を問題にしない程の大きな管内抵
抗を毛細管流路２３ａで付与しており問題ない。At this time, the flow passage cross-sectional area of the main flow passage 22 is designed to be sufficiently thin so that the gas-liquid two-phase refrigerant in the main flow passage 22 does not separate into the gas phase and the liquid phase even in the downstream. Therefore, there is no concern about phase separation in the main pipe channel 22. Also,
Since the main pipe flow path 22 is designed to be thin, the pressure of the refrigerant is slightly decreased toward the downstream side, but in the branch pipe flow path 23, a large pipe resistance that does not cause a pressure gradient in the main pipe flow path 22 causes a capillary flow. There is no problem because it is given on the path 23a.
【００４９】さらに、ヘッダー２１を大型にすることな
く毛細管流路２３ａを容易に長くできることから、本
来、ヘッダー２１の上流にあるキャピラリーチューブ等
の減圧機構（図示せず）を兼ね備えることも可能であ
る。減圧前の気相単相冷媒を主管流路２２に流入させ、
容易に均等分流が可能である単相を各支管流路２３に分
流し、流路断面積を４mm2以下とした毛細管流路２３ａ
によって所定の減圧を行い、蒸発器に流入させることも
可能である。Furthermore, since the capillary flow path 23a can be easily lengthened without increasing the size of the header 21, it is also possible to provide a decompression mechanism (not shown) such as a capillary tube upstream of the header 21 originally. . The gas-phase single-phase refrigerant before depressurization is caused to flow into the main pipe flow path 22,
Capillary flow path 23a in which a single phase, which can be easily split evenly, is split into each branch flow path 23 and the flow path cross-sectional area is 4 mm 2 or less
It is also possible to carry out a predetermined decompression by means of and to make it flow into the evaporator.
【００５０】以上のように本実施例のヘッダー２１は気
液二相冷媒を均等に分流させる目的で支管流路に適切な
管内抵抗を付与させるために、銅板２１ａ，２１ｂをは
りあわせ、これらを膨管加工することで両銅板２１ａ，
２１ｂの間に流路を形成し、支管流路２３は流路断面積
が１０mm2以下の毛細管流路２３ａを有したことで、短
時間で容易に製作でき、部品点数も少なく安価にできる
とともに、容易に適切な管内抵抗を付与でき、大幅な分
流量制御も容易に可能となる小型のヘッダーを提供する
ものである。As described above, in the header 21 of this embodiment, the copper plates 21a and 21b are attached to each other in order to impart an appropriate in-tube resistance to the branch pipe passage for the purpose of evenly dividing the gas-liquid two-phase refrigerant. By expanding the tube, both copper plates 21a,
Since the flow passage is formed between 21b and the branch flow passage 23 has the capillary flow passage 23a having a flow passage cross-sectional area of 10 mm 2 or less, it can be easily manufactured in a short time, the number of parts is small, and the cost can be reduced. The present invention provides a small-sized header that can easily provide an appropriate pipe resistance and can easily control a large amount of divided flow.
【００５１】また、気相単相分流の後に大幅な減圧を行
い、分流器と減圧機構を兼ね備えたヘッダーをも提供す
るものである。Further, the present invention also provides a header having a diverter and a depressurizing mechanism by performing a significant depressurization after the gas-phase single-phase diversion.
【００５２】[0052]
【発明の効果】以上のように本発明は、２枚の金属板を
はりあわせ、これら金属板の少なくとも一方を膨管加工
することで両金属板の間に流路を形成し、この流路は一
端を流出入部とし他端を封止した主管流路と、この主管
流路に一端を連通し他端を前記金属板の周縁部に開口し
た複数の支管流路とから構成され、前記主管流路は一端
の流出入部から他端側に向けて少なくとも部分的には流
路断面積が縮小するテーパー部を有した構成によって、
２枚の金属板だけで部品点数が少なく、金属板の接合と
膨管加工だけで工数も少なく、任意のテーパー形状を工
数や部品点数を増すことなく加工できることで均等分流
が可能であり、支管流路を短くできることで小型のヘッ
ダーを提供できる。As described above, according to the present invention, two metal plates are attached to each other, and at least one of the metal plates is subjected to the expansion tube to form a flow path between the two metal plates. And a plurality of branch pipe passages having one end communicating with the main pipe passage and the other end opened to the peripheral portion of the metal plate. Is a structure having a tapered portion in which the flow passage cross-sectional area is reduced at least partially from the inflow / outflow portion of one end toward the other end,
The number of parts is small with only two metal plates, the number of man-hours is small only by joining the metal plates and expanding the pipes, and it is possible to process a desired tapered shape without increasing the man-hours or the number of parts, which enables uniform distribution. Since the flow path can be shortened, a small header can be provided.
【００５３】また、２枚の金属板をはりあわせ、これら
金属板の少なくとも一方を膨管加工することで両金属板
の間に流路を形成し、この流路は一端を流出入部とし他
端を封止した主管流路と、この主管流路に一端を連通し
他端を前記金属板の周縁部に開口した複数の支管流路と
から構成され、前記支管流路の途中に毛細管流路を有し
た構成によって、２枚の金属板だけで部品点数が少な
く、金属板の接合と膨管加工だけで工数も少なく、毛細
管流路長さや、流路径を容易に変えられるので、容易に
適切な管内抵抗を付与できて大幅な分流量制御も容易に
可能となるヘッダーを提供できる。Further, two metal plates are attached to each other and at least one of the metal plates is expanded to form a flow path between the metal plates. One end of this flow path is an inflow / outflow portion and the other end is sealed. It is composed of a stopped main pipe flow channel and a plurality of branch pipe flow channels having one end communicating with the main pipe flow channel and the other end opened to the peripheral edge of the metal plate, and a capillary flow channel is provided in the middle of the branch pipe flow channel. With this configuration, the number of parts is small with only two metal plates, the number of man-hours is small only by joining the metal plates and expanding the tube, and the capillary flow path length and flow path diameter can be easily changed. It is possible to provide a header which can be provided with resistance and can easily perform a large amount of divided flow control.
【００５４】また、２枚の金属板をはりあわせ、これら
金属板の少なくとも一方を膨管加工することで両金属板
の間に流路を形成し、この流路は一端を流出入部とし他
端を封止した主管流路と、この主管流路に一端を連通し
他端を前記金属板の周縁部に開口した複数の支管流路と
から構成され、前記支管流路の途中に毛細管流路を有
し、このはり合わされた金属板は全体として湾曲した構
成により、２枚の金属板だけで部品点数が少なく、金属
板の接合と膨管加工だけで工数も少なく、任意のテーパ
ー形状を工数や部品点数を増すことなく加工できること
で均等分流が可能で、毛細管流路長さや流路径を容易に
変えられるので、容易に適切な管内抵抗を付与できて大
幅な分流量制御も容易に可能となる上に、全体として螺
旋状に巻かれた形状となっており、毛細管流路２３ａが
長くとも、必要スペースが小さくできるヘッダーを提供
できる。Further, two metal plates are attached to each other, and at least one of the metal plates is expanded to form a flow path between the two metal plates. One end of the flow path is used as an inflow / outflow portion and the other end is sealed. The main pipe flow channel that is stopped, and a plurality of branch pipe flow channels having one end communicating with the main pipe flow channel and the other end opening to the peripheral portion of the metal plate, and a capillary flow channel is provided in the middle of the branch pipe flow channel. However, due to the curved structure of the laminated metal plates as a whole, the number of parts is small with only two metal plates, and the man-hours are small by only joining the metal plates and processing the expansion tube. Since it can be processed without increasing the number of points, uniform flow distribution is possible, and the capillary flow path length and flow path diameter can be easily changed, so it is possible to easily give an appropriate pipe resistance and also to greatly control the divided flow rate. The shape is spirally wound as a whole It is, even long capillary channel 23a, it can provide a header necessary space can be reduced.
【図１】本発明の第１の実施例のヘッダーの平面図FIG. 1 is a plan view of a header according to a first embodiment of the present invention.
【図２】図１のＡ−Ａ線断面図FIG. 2 is a sectional view taken along line AA of FIG. 1;
【図３】本発明の第２の実施例のヘッダーの平面図FIG. 3 is a plan view of a header according to a second embodiment of the present invention.
【図４】図３のＢ−Ｂ線断面図FIG. 4 is a sectional view taken along line BB of FIG. 3;
【図５】本発明の第３の実施例のヘッダーの一部切欠き
斜視図FIG. 5 is a partially cutaway perspective view of a header according to a third embodiment of the present invention.
【図６】図５のＣ−Ｃ断面図6 is a sectional view taken along line CC of FIG.
【図７】従来のヘッダーの断面図FIG. 7 is a cross-sectional view of a conventional header
【図８】従来のヘッダーの挿入部材の斜視図FIG. 8 is a perspective view of a conventional header insertion member.
１，１１，２１ ヘッダー １ａ，１ｂ，１１ａ，１１ｂ，２１ａ，２１ｂ 銅板 ２，１２，２２ 主管流路 ２ａ テーパー部 ２ｂ，１２ａ，２２ａ 流出入部 ３，１３，２３ 支管流路 １３ａ，２３ａ 毛細管流路 1,11,21 Header 1a, 1b, 11a, 11b, 21a, 21b Copper plate 2, 12, 22 Main pipe flow path 2a Tapered part 2b, 12a, 22a Inflow / outflow part 3, 13, 23 Branch pipe flow path 13a, 23a Capillary flow path
Claims (3)
板の少なくとも一方を膨管加工することで両金属板の間
に流路を形成し、この流路は一端を流出入部とし他端を
封止した主管流路と、この主管流路に一端を連通し他端
を前記金属板の周縁部に開口した複数の支管流路とから
構成され、前記主管流路は一端の流出入部から他端側に
向けて少なくとも部分的には流路断面積が縮小するテー
パー部を有したヘッダー。1. A method of forming a flow path between two metal plates by laminating two metal plates and expanding at least one of the metal plates, the flow path having one end as an inflow / outflow part and the other end sealed. It is composed of a main pipe flow channel that has stopped, and a plurality of branch pipe flow channels that communicate one end with the main pipe flow channel and open the other end at the peripheral edge of the metal plate, the main pipe flow channel from the inflow / outflow portion of one end to the other end. A header having a tapered portion whose flow passage cross-sectional area decreases at least partially toward the side.
板の少なくとも一方を膨管加工することで両金属板の間
に流路を形成し、この流路は一端を流出入部とし他端を
封止した主管流路と、この主管流路に一端を連通し他端
を前記金属板の周縁部に開口した複数の支管流路とから
構成され、前記支管流路の途中に毛細管流路を有したヘ
ッダー。2. A metal plate is attached to two metal plates, and at least one of the metal plates is expanded to form a flow path between the two metal plates. It is composed of a stopped main pipe flow channel and a plurality of branch pipe flow channels having one end communicating with the main pipe flow channel and the other end opened to the peripheral edge of the metal plate, and a capillary flow channel is provided in the middle of the branch pipe flow channel. Headers.
板の少なくとも一方を膨管加工することで両金属板の間
に流路を形成し、この流路は一端を流出入部とし他端を
封止した主管流路と、この主管流路に一端を連通し他端
を前記金属板の周縁部に開口した複数の支管流路とから
構成され、前記支管流路の途中に毛細管流路を有し、こ
のはり合わされた金属板は全体として湾曲したヘッダ
ー。3. Two metal plates are bonded together, and at least one of these metal plates is expanded to form a flow path between the two metal plates. One end of this flow path is an inflow / outflow part and the other end is sealed. It is composed of a stopped main pipe flow channel and a plurality of branch pipe flow channels having one end communicating with the main pipe flow channel and the other end opened to the peripheral edge of the metal plate, and a capillary flow channel is provided in the middle of the branch pipe flow channel. However, this laminated metal plate is a curved header as a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7151552A JPH094995A (en) | 1995-06-19 | 1995-06-19 | Header |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7151552A JPH094995A (en) | 1995-06-19 | 1995-06-19 | Header |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH094995A true JPH094995A (en) | 1997-01-10 |
Family
ID=15521021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7151552A Pending JPH094995A (en) | 1995-06-19 | 1995-06-19 | Header |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH094995A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001073366A1 (en) * | 2000-03-28 | 2001-10-04 | Compagnie Industrielle D'applications Thermiques | Plate heat exchanger |
| WO2005031239A1 (en) * | 2003-10-02 | 2005-04-07 | Behr Gmbh & Co. Kg | Charge-air cooler for motor vehicles |
| JP2009178255A (en) * | 2008-01-29 | 2009-08-13 | Okamura Corp | Freezing/refrigerating showcase |
| JPWO2015072128A1 (en) * | 2013-11-14 | 2017-03-16 | 日本電気株式会社 | Piping structure, cooling device using the same, and refrigerant vapor transport method |
| EP3306232A1 (en) * | 2016-10-05 | 2018-04-11 | Mitsubishi Heavy Industries Thermal Systems, Ltd. | Evaporator and refrigerant circuit |
-
1995
- 1995-06-19 JP JP7151552A patent/JPH094995A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001073366A1 (en) * | 2000-03-28 | 2001-10-04 | Compagnie Industrielle D'applications Thermiques | Plate heat exchanger |
| WO2005031239A1 (en) * | 2003-10-02 | 2005-04-07 | Behr Gmbh & Co. Kg | Charge-air cooler for motor vehicles |
| JP2007507679A (en) * | 2003-10-02 | 2007-03-29 | ベール ゲーエムベーハー ウント コー カーゲー | Auto air supply cooler |
| US7896065B2 (en) | 2003-10-02 | 2011-03-01 | Behr Gmbh & Co. Kg | Charge-air cooler for motor vehicles |
| JP2009178255A (en) * | 2008-01-29 | 2009-08-13 | Okamura Corp | Freezing/refrigerating showcase |
| JPWO2015072128A1 (en) * | 2013-11-14 | 2017-03-16 | 日本電気株式会社 | Piping structure, cooling device using the same, and refrigerant vapor transport method |
| EP3306232A1 (en) * | 2016-10-05 | 2018-04-11 | Mitsubishi Heavy Industries Thermal Systems, Ltd. | Evaporator and refrigerant circuit |
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