JP6482401B2 - Linear motor cooling unit - Google Patents

Linear motor cooling unit Download PDF

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Publication number
JP6482401B2
JP6482401B2 JP2015123700A JP2015123700A JP6482401B2 JP 6482401 B2 JP6482401 B2 JP 6482401B2 JP 2015123700 A JP2015123700 A JP 2015123700A JP 2015123700 A JP2015123700 A JP 2015123700A JP 6482401 B2 JP6482401 B2 JP 6482401B2
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flat plate
cooling unit
cooling
flow path
plate member
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JP2017011846A (en
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池田　隆
隆 池田
道太郎 臼井
道太郎 臼井
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Sumitomo Heavy Industries Ltd
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Sumitomo Heavy Industries Ltd
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Priority to JP2015123700A priority Critical patent/JP6482401B2/en
Priority to TW105118777A priority patent/TWI601365B/en
Priority to KR1020160075323A priority patent/KR101865333B1/en
Priority to CN201610435807.7A priority patent/CN106257806B/en
Publication of JP2017011846A publication Critical patent/JP2017011846A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
    • H02K2205/09—Machines characterised by drain passages or by venting, breathing or pressure compensating means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges

Description

本発明は、リニアモータの冷却ユニットに関する。   The present invention relates to a cooling unit for a linear motor.

リニアモータのコイルを冷却する冷却ユニットとして、内部を冷媒が流れる２枚の平板状の冷却部と、外部から冷媒が流入し、冷却部に冷媒を供給する流入部と、冷却部からの冷媒が流出する流出部と、を備える冷却ユニットが知られている（例えば特許文献１）。この冷却ユニットでは、２枚の冷却部によってコイルを挟み込み、発熱するコイルを冷却する。   As a cooling unit for cooling the coil of the linear motor, two flat plate-like cooling units in which the refrigerant flows inside, an inflow unit for supplying the refrigerant to the cooling unit from the outside, and a refrigerant from the cooling unit A cooling unit including an outflow portion that flows out is known (for example, Patent Document 1). In this cooling unit, the coil is sandwiched between two cooling units to cool the coil that generates heat.

特開２０１３−２０７８３８号公報JP 2013-207838 A

特許文献１に記載される冷却ユニットでは、流入部および流出部と２枚の平板状の冷却部とは、冷媒が漏れるのを抑止するためのＯリングを間に挟み込んだ状態で締結される。   In the cooling unit described in Patent Document 1, the inflow portion and the outflow portion and the two flat plate-like cooling portions are fastened with an O-ring interposed between them for preventing the refrigerant from leaking.

Ｏリングを挟み込んだ状態で締結すると、Ｏリングの反発力で冷却部が押されて冷却部が変形しうる。そのため、流路内にリブ部材を設け、Ｏリングに押される部分を流路内側から押さえることが考えられる。しかしながら、流路内にリブを設けると、その分だけ流路が狭くなり、圧力損失が大きくなる。したがって、冷却部の変形を抑止することはそれほど単純ではない。   If it fastens in the state where the O-ring was inserted, the cooling part could be pushed by the repulsive force of the O-ring, and the cooling part could be deformed. For this reason, it is conceivable to provide a rib member in the flow path and hold the portion pressed by the O-ring from the inside of the flow path. However, if ribs are provided in the flow path, the flow path is narrowed by that amount, and the pressure loss is increased. Therefore, it is not so simple to suppress the deformation of the cooling section.

本発明は、こうした状況に鑑みてなされたものであり、その目的は、冷却部の圧力損失の増大を抑止しつつも冷却部の変形を抑止できるリニアモータの冷却ユニットを提供することにある。   This invention is made | formed in view of such a condition, The objective is to provide the cooling unit of the linear motor which can suppress a deformation | transformation of a cooling part, suppressing the increase in the pressure loss of a cooling part.

上記課題を解決するために、本発明のある態様のリニアモータの冷却ユニットは、リニアモータの駆動部を構成するコイルを冷却するための冷却ユニットであって、コイルに密着してコイルを冷却するための冷却部を備える。冷却部は、第１部材と、第１部材に重なる第２部材と、リブ部材と、を含む。第２部材に合わさる第１部材の面には凹部が形成され、凹部と、第１部材と合わさる第２部材の面との隙間は、コイルを冷却するための冷媒の流路を形成し、リブ部材は、第１部材または第２部材の一方に固定され、隙間内において第１部材または第２部材の他方に当接し、流路の一部は、リブ部材によって複数の分割流路に分割され、複数の分割流路の少なくとも１つを形成する第２部材の面の部分に拡大凹部が形成されている。   In order to solve the above-described problems, a cooling unit for a linear motor according to an aspect of the present invention is a cooling unit for cooling a coil constituting a drive unit of the linear motor, and cools the coil in close contact with the coil. A cooling part for the purpose. The cooling unit includes a first member, a second member overlapping the first member, and a rib member. A concave portion is formed on the surface of the first member that meets the second member, and a gap between the concave portion and the surface of the second member that mates with the first member forms a refrigerant flow path for cooling the coil, and ribs The member is fixed to one of the first member and the second member, contacts the other of the first member or the second member in the gap, and a part of the flow path is divided into a plurality of divided flow paths by the rib member. An enlarged recess is formed in a portion of the surface of the second member that forms at least one of the plurality of divided flow paths.

なお、以上の構成要素の任意の組み合わせや、本発明の構成要素や表現を方法、装置、システムなどの間で相互に置換したものもまた、本発明の態様として有効である。   Note that any combination of the above-described constituent elements, and those obtained by replacing the constituent elements and expressions of the present invention with each other among methods, apparatuses, systems, etc. are also effective as an aspect of the present invention.

本発明によれば、冷却部の圧力損失の増大を抑止しつつも冷却部の変形を抑止できる。   ADVANTAGE OF THE INVENTION According to this invention, a deformation | transformation of a cooling part can be suppressed, suppressing the increase in the pressure loss of a cooling part.

実施形態に係るリニアモータの冷却ユニットを示す斜視図である。It is a perspective view which shows the cooling unit of the linear motor which concerns on embodiment. 平板冷却部を示す分解斜視図である。It is a disassembled perspective view which shows a flat plate cooling part. 平板冷却部を示す横断面図である。It is a cross-sectional view which shows a flat plate cooling part. リブ部材とその周辺を示す断面図である。It is sectional drawing which shows a rib member and its periphery. リブ部材とその周辺を示す断面図である。It is sectional drawing which shows a rib member and its periphery. 流量と圧力損失の関係を示すグラフである。It is a graph which shows the relationship between a flow volume and a pressure loss.

以下、各図面に示される同一または同等の構成要素、部材、工程には、同一の符号を付するものとし、適宜重複した説明は省略する。また、各図面における部材の寸法は、理解を容易にするために適宜拡大、縮小して示される。また、各図面において実施の形態を説明する上で重要ではない部材の一部は省略して表示する。   Hereinafter, the same or equivalent components, members, and processes shown in the drawings are denoted by the same reference numerals, and repeated descriptions are appropriately omitted. In addition, the dimensions of the members in each drawing are appropriately enlarged or reduced for easy understanding. Also, in the drawings, some of the members that are not important for describing the embodiment are omitted.

図１は、実施形態に係るリニアモータの冷却ユニット１００を示す斜視図である。本実施の形態に係る冷却ユニット１００を適用したリニアモータは、所定の方向に並設される矩形板状の複数（図１では３枚）のコイル５と、交互に並設され、コイル５と対向する複数のＮ極の磁石および複数のＳ極の磁石（いずれも不図示）と、を備える。コイル５に通電されるとＮ極の磁石とＳ極の磁石との間で電磁力が発生し、この電磁力により、冷却ユニット１００を伴ってコイル５が移動する。このように、コイル５はリニアモータの駆動部を構成する。なお、実施の形態では、コイル５は、３枚でＡ相、Ｂ相の２相を形成する。   FIG. 1 is a perspective view showing a cooling unit 100 of a linear motor according to an embodiment. The linear motor to which the cooling unit 100 according to the present embodiment is applied includes a plurality of rectangular plate-like (three in FIG. 1) coils 5 arranged in parallel in a predetermined direction, and coils 5 arranged alternately. A plurality of opposing N-pole magnets and a plurality of S-pole magnets (both not shown). When the coil 5 is energized, an electromagnetic force is generated between the N-pole magnet and the S-pole magnet, and the coil 5 moves with the cooling unit 100 by this electromagnetic force. Thus, the coil 5 constitutes a drive unit for the linear motor. In the embodiment, three coils 5 form two phases of A phase and B phase.

冷却ユニット１００は、コイル５を冷却し、その温度上昇を抑える。冷却ユニット１００は、コイル５を両側から挟む２枚の平板冷却部２と、コイル５の並設方向の一方端側に設けられる流入部３と、他方端側に設けられる流出部４と、を備える。   The cooling unit 100 cools the coil 5 and suppresses the temperature rise. The cooling unit 100 includes two flat plate cooling portions 2 sandwiching the coil 5 from both sides, an inflow portion 3 provided on one end side in the parallel arrangement direction of the coils 5, and an outflow portion 4 provided on the other end side. Prepare.

図２、３は、平板冷却部２を示す。図２は、平板冷却部２をコイル５に密着する側から見た斜視図である。図３は、平板冷却部２の横断面図である。平板冷却部２は、第１の平板部材１１と、第２の平板部材１２と、第３の平板部材１３と、リブ部材２０と、を含む。第１の平板部材１１、第２の平板部材１２、第３の平板部材１３およびリブ部材２０は、例えば金属製、セラミクス性あるいは樹脂製である。第１の平板部材１１、第２の平板部材１２および第３の平板部材１３は、この順に積層されて、拡散接合や熱接合により接合される。   2 and 3 show the flat plate cooling unit 2. FIG. 2 is a perspective view of the flat plate cooling unit 2 as viewed from the side in close contact with the coil 5. FIG. 3 is a cross-sectional view of the flat plate cooling unit 2. The flat plate cooling unit 2 includes a first flat plate member 11, a second flat plate member 12, a third flat plate member 13, and a rib member 20. The first flat plate member 11, the second flat plate member 12, the third flat plate member 13, and the rib member 20 are made of metal, ceramics, or resin, for example. The 1st flat plate member 11, the 2nd flat plate member 12, and the 3rd flat plate member 13 are laminated | stacked in this order, and are joined by diffusion bonding or thermal bonding.

第１の平板部材１１は、長方形状の平板である。第１の平板部材１１の長手方向の一端側には、平板面を貫通する６つの円形状の流入口１１ａが形成されている。６つの流入口１１ａは第１の平板部材１１の短手方向に並設される。また、第１の平板部材１１の長手方向の他端側には、平板面を貫通する６つの円形状の流出口１１ｂが形成される。６つの流出口１１ｂは第１の平板部材１１の短手方向に並設される。   The first flat plate member 11 is a rectangular flat plate. On one end side in the longitudinal direction of the first flat plate member 11, six circular inflow ports 11a penetrating the flat plate surface are formed. The six inflow ports 11 a are arranged in parallel in the short direction of the first flat plate member 11. Further, on the other end side in the longitudinal direction of the first flat plate member 11, six circular outlets 11b penetrating the flat plate surface are formed. The six outlets 11 b are arranged in parallel in the short direction of the first flat plate member 11.

第２の平板部材１２は、第１の平板部材１１と同じ大きさの長方形状の平板である。第２の平板部材１２には、平板面を貫通する３つの長方形状の開口１２ａが形成される。３つの開口１２ａは第２の平板部材１２の短手方向に並設され、第２の平板部材１２の長手方向に延在する。各開口１２ａの一端側には、２つの円形状の開口１２ｂがそれぞれ形成され、他端側にも２つの円形状の開口１２ｃがそれぞれ形成される。つまり、第２の平板部材１２には、計６つの開口１２ｂと計６つの開口１２ｃが形成される。開口１２ｂ、開口１２ｃはそれぞれ、流入口１１ａ、流出口１１ｂに対応する位置に設けられる。したがって、第１の平板部材１１の平板面と第２の平板部材１２の平板面とを重ね合わせると、流入口１１ａと開口１２ｂとが連通し、流出口１１ｂと開口１２ｃとが連通する。   The second flat plate member 12 is a rectangular flat plate having the same size as the first flat plate member 11. In the second flat plate member 12, three rectangular openings 12a penetrating the flat plate surface are formed. The three openings 12 a are juxtaposed in the short direction of the second flat plate member 12 and extend in the longitudinal direction of the second flat plate member 12. Two circular openings 12b are respectively formed on one end side of each opening 12a, and two circular openings 12c are also formed on the other end side. That is, the second flat plate member 12 is formed with a total of six openings 12b and a total of six openings 12c. The opening 12b and the opening 12c are provided at positions corresponding to the inlet 11a and the outlet 11b, respectively. Therefore, when the flat plate surface of the first flat plate member 11 and the flat plate surface of the second flat plate member 12 are overlapped, the inflow port 11a and the opening 12b communicate with each other, and the outflow port 11b and the opening 12c communicate with each other.

第１の平板部材１１の平板面と第２の平板部材１２の平板面とを重ね合わせると、第２の平板部材１２の３つの開口１２ａの一方が塞がれ、３つの凹部（以下、凹部１４ａと呼ぶ）を有する１枚の平板部材（第４の平板部材１４と呼ぶ）が形成される。なお、第１の平板部材１１と第２の平板部材１２とを別体として形成せずに、それらを一体に形成してよい。つまり、あらかじめ、３つの凹部１４ａを有する第４の平板部材１４として形成してもよい。   When the flat plate surface of the first flat plate member 11 and the flat plate surface of the second flat plate member 12 are overlapped, one of the three openings 12a of the second flat plate member 12 is closed, and three concave portions (hereinafter referred to as concave portions). A single flat plate member (referred to as a fourth flat plate member 14) having 14a) is formed. Note that the first flat plate member 11 and the second flat plate member 12 may be integrally formed without forming them separately. That is, you may form beforehand as the 4th flat plate member 14 which has the three recessed parts 14a.

第３の平板部材１３は、第１の平板部材１１および第２の平板部材１２と同じ大きさの長方形状の平板である。第３の平板部材１３の平板面には、拡大凹部１３ａ（後述）が形成されている。第３の平板部材１３の平板面と、第４の平板部材１４の凹部１４ａを有する側の面とを重ね合わせて接合することにより、３つの凹部１４ａの開口が塞がれて平板冷却部２内に３つの隙間７ａ〜７ｃ（以下、これらをまとめて「隙間７」とも呼ぶ）が形成される。３つの隙間７ａ〜７ｃは、平板冷却部２内を長手方向に延びる３つの流路８ａ〜８ｃ（以下、これらをまとめて「流路８」とも呼ぶ）として機能する。例えば冷却水などの冷媒がこの流路８を流れる。流路８ａ〜８ｃは、この順番で流入部３の上流側に連結される。   The third flat plate member 13 is a rectangular flat plate having the same size as the first flat plate member 11 and the second flat plate member 12. An enlarged concave portion 13 a (described later) is formed on the flat plate surface of the third flat plate member 13. By overlapping and joining the flat plate surface of the third flat plate member 13 and the surface of the fourth flat plate member 14 on the side having the concave portions 14a, the openings of the three concave portions 14a are closed and the flat plate cooling portion 2 is closed. Three gaps 7 a to 7 c (hereinafter collectively referred to as “gap 7”) are formed therein. The three gaps 7 a to 7 c function as three flow paths 8 a to 8 c (hereinafter, collectively referred to as “flow paths 8”) extending in the longitudinal direction in the flat plate cooling unit 2. For example, a coolant such as cooling water flows through the flow path 8. The flow paths 8a to 8c are connected to the upstream side of the inflow portion 3 in this order.

リブ部材２０は、第２の平板部材１２の開口１２ａの長手方向の両端にそれぞれ設けられる。具体的には、リブ部材２０は、開口１２ａの端部であって開口１２ｂとの連結部分１２ｄと、開口１２ａの端部であって開口１２ｃとの連結部分１２ｅと、に設けられる。本実施の形態では、リブ部材２０は第２の平板部材１２と一体に形成される。したがって、リブ部材２０は、第２の平板部材１２の開口１２ａの縁と繋がっている。リブ部材２０の構成については、図４、５で後述する。   The rib members 20 are provided at both ends in the longitudinal direction of the opening 12a of the second flat plate member 12, respectively. Specifically, the rib member 20 is provided at an end portion of the opening 12a and a connecting portion 12d with the opening 12b, and an end portion of the opening 12a and a connecting portion 12e with the opening 12c. In the present embodiment, the rib member 20 is formed integrally with the second flat plate member 12. Therefore, the rib member 20 is connected to the edge of the opening 12 a of the second flat plate member 12. The configuration of the rib member 20 will be described later with reference to FIGS.

図１に戻り、流入部３は、直方体状の上部３ｂと、上部３ｂを厚み方向（すなわち平板冷却部２の平板面に直交する方向）両側から絞るように小さくした直方体状の下部３ｃと、を含む。上部３ｂには上面に開口して下方に延びる流入口３ａが設けられる。下部３ｃは、コイル５と略同一の厚みを有し、２枚の平板冷却部２により挟まれる。流入部３は、下部３ｃが２枚の平板冷却部２で挟まれ上部３ｂの下面が平板冷却部２の上面に接した状態で、ボルト締結により平板冷却部２に固定される。流入部３は特に、平板冷却部２との間に、冷媒が漏れるのを抑止するためのＯリング６（図１では不図示）を挟んだ状態で平板冷却部２に固定される。また、下部３ｃの側面（すなわち第１の平板部材１１と密着する面）には、複数の貫通孔（不図示）が形成されている。流入部３が平板冷却部２に固定されているとき、各貫通孔は平板冷却部２の各流入口１１ａと連通する。つまり、流入部３と平板冷却部２の３つの流路８ａ〜８ｃ（すなわち３つの隙間７ａ〜７ｃ）とが連通する。   Returning to FIG. 1, the inflow portion 3 includes a rectangular parallelepiped upper portion 3 b, and a rectangular parallelepiped lower portion 3 c that is reduced so that the upper portion 3 b is narrowed from both sides in the thickness direction (that is, the direction orthogonal to the flat plate surface of the flat plate cooling portion 2). including. The upper portion 3b is provided with an inflow port 3a that opens to the upper surface and extends downward. The lower part 3 c has substantially the same thickness as the coil 5 and is sandwiched between the two flat plate cooling parts 2. The inflow portion 3 is fixed to the flat plate cooling portion 2 by bolt fastening in a state where the lower portion 3c is sandwiched between the two flat plate cooling portions 2 and the lower surface of the upper portion 3b is in contact with the upper surface of the flat plate cooling portion 2. The inflow part 3 is fixed to the flat plate cooling part 2 with an O-ring 6 (not shown in FIG. 1) sandwiching between the inflow part 3 and the flat plate cooling part 2 in particular. A plurality of through holes (not shown) are formed on the side surface of the lower portion 3c (that is, the surface that is in close contact with the first flat plate member 11). When the inflow portion 3 is fixed to the flat plate cooling portion 2, each through hole communicates with each inflow port 11 a of the flat plate cooling portion 2. That is, the three flow paths 8a to 8c (that is, the three gaps 7a to 7c) of the inflow portion 3 and the flat plate cooling portion 2 communicate with each other.

流出部４は、流入部３と同様、直方体状の上部４ｂと、上部４ｂを厚み方向両側から絞るように小さくした直方体状の下部４ｃと、を含む。上部４ｂには上面に開口して下方に延びる流出口４ａが設けられる。流出部４は、流入部３と同様に、下部４ｃが２枚の平板冷却部２で挟まれ上部４ｂの下面が平板冷却部２の上面に接した状態で、ボルト締結により平板冷却部２に固定される。流出部４は特に、平板冷却部２との間にＯリング６を挟んだ状態で平板冷却部２に固定される。また、下部４ｃの側面には、複数の貫通孔（不図示）が形成されている。流出部４が平板冷却部２に固定されているとき、各貫通孔は平板冷却部２の各流出口１１ｂと連通する。つまり、平板冷却部２の３つの流路８ａ〜８ｃ（すなわち３つの隙間７ａ〜７ｃ）と流出部４とが連通する。   Like the inflow portion 3, the outflow portion 4 includes a rectangular parallelepiped upper portion 4b and a rectangular parallelepiped lower portion 4c that is reduced so that the upper portion 4b is narrowed from both sides in the thickness direction. The upper portion 4b is provided with an outlet 4a that opens to the upper surface and extends downward. Similarly to the inflow portion 3, the outflow portion 4 is connected to the flat plate cooling portion 2 by bolt fastening in a state where the lower portion 4 c is sandwiched between the two flat plate cooling portions 2 and the lower surface of the upper portion 4 b is in contact with the upper surface of the flat plate cooling portion 2. Fixed. In particular, the outflow part 4 is fixed to the flat plate cooling part 2 with an O-ring 6 sandwiched between the flat plate cooling part 2. A plurality of through holes (not shown) are formed on the side surface of the lower portion 4c. When the outflow part 4 is being fixed to the flat plate cooling part 2, each through-hole communicates with each outflow port 11b of the flat plate cooling part 2. That is, the three flow paths 8a to 8c (that is, the three gaps 7a to 7c) of the flat plate cooling part 2 and the outflow part 4 communicate with each other.

流出部４および流入部３を平板冷却部２に対して固定した状態で流入部３の流入口３ａに冷却水を流入させると、冷媒は流入部３から平板冷却部２の各流入口１１ａを通り、平板冷却部２内の３つの流路８ａ〜８ｃを流通して各流出口１１ｂを通った後、流出部４の流出口４ａから外部に流出する。   When the cooling water is caused to flow into the inlet 3a of the inflow portion 3 with the outflow portion 4 and the inflow portion 3 fixed to the flat plate cooling portion 2, the refrigerant flows from the inflow portion 3 to the respective inlets 11a of the flat plate cooling portion 2. After passing through the three flow paths 8a to 8c in the flat plate cooling unit 2 and passing through the respective outlets 11b, the liquid flows out from the outlet 4a of the outlet part 4 to the outside.

図４、５は、リブ部材２０とその周辺を示す断面図である。図４は、上部３ｂに最も近い開口１２ａに設けられる（すなわち流路８ａ内に設けられる）リブ部材２０のうちの１つを代表して示す。図５は、上部３ｂから遠い２つの開口１２ａに設けられる（すなわち流路８ｂ内または流路８ｃ内に設けられる）リブ部材２０のうちの１つを代表して示す。図４、５は、連結部分１２ｄまたは連結部分１２ｅの周辺を示す断面図ともいえる。Ｏリング６は、平板冷却部２と流入部３との間に設けられる。リブ部材２０は、基部２０ａと２つの突起部２０ｂとを含む。基部２０ａは、第２の平板部材１２よりも薄く形成され、開口１２ａの縁と繋がっている。２つの突起部２０ｂは、基部２０ａから第３の平板部材１３側に突出し、各隙間７内において第３の平板部材１３に当接する。したがって、連結部分１２ｄや連結部分１２ｅでは、２つの突起部２０ｂによって各隙間７すなわち各流路８が３つに分割される。流入口１１ａから平板冷却部２内に流入した冷媒は、分割されたこの３つの流路（以下、「分割流路」と呼ぶ）を通って流れる。   4 and 5 are cross-sectional views showing the rib member 20 and its periphery. FIG. 4 shows one of the rib members 20 provided in the opening 12a closest to the upper part 3b (that is, provided in the flow path 8a) as a representative. FIG. 5 shows one of the rib members 20 provided in the two openings 12a far from the upper part 3b (that is, provided in the flow path 8b or the flow path 8c). 4 and 5 can be said to be cross-sectional views showing the periphery of the connecting portion 12d or the connecting portion 12e. The O-ring 6 is provided between the flat plate cooling part 2 and the inflow part 3. The rib member 20 includes a base portion 20a and two projecting portions 20b. The base portion 20a is formed thinner than the second flat plate member 12, and is connected to the edge of the opening 12a. The two projecting portions 20 b protrude from the base portion 20 a to the third flat plate member 13 side and come into contact with the third flat plate member 13 in each gap 7. Therefore, in the connection part 12d and the connection part 12e, each gap | interval 7, ie, each flow path 8, is divided | segmented into three by the two projection parts 20b. The refrigerant flowing into the flat plate cooling unit 2 from the inflow port 11a flows through the three divided flow paths (hereinafter referred to as “divided flow paths”).

図５に示すように、第３の平板部材１３の平板面のうち、流路８ｂまたは流路８ａの分割流路を形成する部分には、それぞれ拡大凹部１３ａが形成されている。各拡大凹部１３ａは矩形状の断面形状を有している。各拡大凹部１３ａは、Ｕ字形状、Ｖ字形状、その他の断面形状を有していてもよい。本実施の形態では、各拡大凹部１３ａは、同じ大きさに形成される。すなわち、各拡大凹部１３ａの幅Ｗ、深さＤ、および長さＬ（図２参照）は同じである。一方、図４に示すように、第３の平板部材１３の平板面のうち、流路８ａの分割流路を形成する部分には、拡大凹部１３ａは形成されていない。   As shown in FIG. 5, in the flat plate surface of the third flat plate member 13, enlarged recesses 13 a are formed in the portions forming the flow channels 8 b or the divided flow channels of the flow channels 8 a, respectively. Each enlarged recess 13a has a rectangular cross-sectional shape. Each enlarged recess 13a may have a U shape, a V shape, or other cross-sectional shapes. In the present embodiment, each enlarged recess 13a is formed in the same size. That is, the width W, the depth D, and the length L (see FIG. 2) of each enlarged recess 13a are the same. On the other hand, as shown in FIG. 4, the enlarged recess 13 a is not formed in a portion of the flat plate surface of the third flat plate member 13 that forms the divided flow channel of the flow channel 8 a.

以上説明した実施の形態に係る冷却ユニット１００によると、連結部分１２ｄ、１２ｅにおいてリブ部材２０の突起部２０ｂが第３の平板部材１３に当接する。したがって、平板冷却部２と流入部３および流出部４とがＯリングを間に挟み込んだ状態で締結され、Ｏリングの反発力で第１の平板部材１１が押されても、第１の平板部材１１はリブ部材２０によって反対側からも押さえられる。これにより、第１の平板部材１１が変形するのが抑止される。加えて、第３の平板部材１３の平板面のうち、分割流路を形成する部分には、拡大凹部１３ａが形成される。ここで、連結部分１２ｄや連結部分１２ｅでは、リブ部材２０を設けた分だけ流路が狭くなるところ、拡大凹部１３ａを設けた分だけ流路が大きくなる。したがって、リブ部材２０を設けても、流路が狭くなるのを抑止でき、圧力損失が大きくなるのを抑止できる。このように、本実施の形態に係る冷却ユニット１００によると、平板冷却部２の圧力損失の増大を抑止しつつも平板冷却部２の変形を抑止できる。   According to the cooling unit 100 according to the embodiment described above, the protruding portion 20b of the rib member 20 contacts the third flat plate member 13 at the connecting portions 12d and 12e. Therefore, even if the flat plate cooling portion 2 and the inflow portion 3 and the outflow portion 4 are fastened with the O-ring sandwiched therebetween, and the first flat plate member 11 is pushed by the repulsive force of the O-ring, the first flat plate The member 11 is pressed by the rib member 20 from the opposite side. Thereby, it is suppressed that the 1st flat plate member 11 deform | transforms. In addition, an enlarged recess 13a is formed in a portion of the flat plate surface of the third flat plate member 13 where the divided flow path is formed. Here, in the connecting portion 12d and the connecting portion 12e, the flow path is narrowed by the amount provided with the rib member 20, but the flow path is increased by the amount provided with the enlarged recess 13a. Therefore, even if the rib member 20 is provided, it is possible to suppress the narrowing of the flow path and to suppress an increase in pressure loss. Thus, according to the cooling unit 100 which concerns on this Embodiment, the deformation | transformation of the flat plate cooling part 2 can be suppressed, suppressing the increase in the pressure loss of the flat plate cooling part 2. FIG.

また、実施の形態に係る冷却ユニット１００によると、第３の平板部材１３の平板面のうち、流路８ａの分割流路を形成する部分には、拡大凹部１３ａは形成されない。ここで、一般に、流入部３の上流側に連結される流路は圧力損失が小さく、下流側に連結される流路は圧力損失が比較的大きい。したがって、流入部３の上流側に連結される流路８ａに拡大凹部１３ａを設けないことによって、上流側に連結される流路８ａと、下流側に連結される流路８ｂ、８ｃとの圧力損失のバランスが取れ、より均一に各流路に冷媒が流れる。   Moreover, according to the cooling unit 100 which concerns on embodiment, the expansion recessed part 13a is not formed in the part which forms the division | segmentation flow path of the flow path 8a among the flat surfaces of the 3rd flat plate member 13. FIG. Here, in general, the flow path connected to the upstream side of the inflow portion 3 has a small pressure loss, and the flow path connected to the downstream side has a relatively large pressure loss. Therefore, the pressure of the flow path 8a connected to the upstream side and the flow paths 8b and 8c connected to the downstream side by not providing the enlarged recess 13a in the flow path 8a connected to the upstream side of the inflow portion 3. Loss is balanced and the refrigerant flows through each flow path more uniformly.

本発明者らは、実施の形態に係る冷却ユニットによる圧力損失の増大の抑止効果を確認するためのシミュレーションを行った。図６は、流量と圧力損失の関係を示すグラフである。図６において、横軸は流量（Ｌ／ｍｉｎ）を示し、縦軸は圧力損失（ｋＰａ）を示す。グラフ５０は、拡大凹部１３ａが設けられていない従来の冷却ユニットのシミュレーション結果を示し、グラフ５２は拡大凹部１３ａが設けられた実施の形態の冷却ユニット１００のシミュレーション結果を示す。このシミュレーション結果から、実施の形態の冷却ユニット１００によると、従来の冷却ユニットに比べて圧力損失が約半分になることがわかる。   The present inventors performed a simulation for confirming the effect of suppressing the increase in pressure loss by the cooling unit according to the embodiment. FIG. 6 is a graph showing the relationship between flow rate and pressure loss. In FIG. 6, the horizontal axis indicates the flow rate (L / min), and the vertical axis indicates the pressure loss (kPa). The graph 50 shows the simulation result of the conventional cooling unit in which the enlarged concave portion 13a is not provided, and the graph 52 shows the simulation result of the cooling unit 100 of the embodiment in which the enlarged concave portion 13a is provided. From this simulation result, it can be seen that according to the cooling unit 100 of the embodiment, the pressure loss is about half that of the conventional cooling unit.

以上、実施の形態に係る冷却ユニットについて説明した。この実施の形態は例示であり、それらの各構成要素や各処理プロセスの組合せにいろいろな変形例が可能なこと、またそうした変形例も本発明の範囲にあることは当業者に理解されるところである。以下変形例を示す。   The cooling unit according to the embodiment has been described above. This embodiment is an exemplification, and it will be understood by those skilled in the art that various modifications can be made to combinations of the respective constituent elements and processing processes, and such modifications are also within the scope of the present invention. is there. A modification is shown below.

（変形例１）
実施の形態では、流路８ａの分割流路を形成する第３の平板部材１３の平板面の部分には拡大凹部１３ａが形成されない場合について説明したが、これに限られない。流路８ａの分割流路を形成する第３の平板部材１３の平板面の部分に拡大凹部１３ａが形成されてもよい。 (Modification 1)
In the embodiment, a case has been described in which the enlarged concave portion 13a is not formed in the portion of the flat plate surface of the third flat plate member 13 that forms the divided flow channel of the flow channel 8a. However, the present invention is not limited to this. An enlarged recess 13a may be formed in the portion of the flat plate surface of the third flat plate member 13 that forms the divided flow channel of the flow channel 8a.

（変形例２）
実施の形態では、流路８ａ以外の流路については、すべての分割流路に対応する拡大凹部１３ａが形成される場合について説明したが、これに限られない。各流路の３つの分割流路のうち、少なくとも１つの分割流路に対応する拡大凹部１３ａが設けられてもよい。また、例えば２つの分割流路を跨る共通の拡大凹部１３ａが形成されてもよい。 (Modification 2)
In the embodiment, the flow channels other than the flow channel 8a have been described with respect to the case where the enlarged recesses 13a corresponding to all the divided flow channels are formed, but the present invention is not limited to this. An enlarged recess 13a corresponding to at least one divided flow path among the three divided flow paths of each flow path may be provided. For example, the common expansion recessed part 13a which straddles two division flow paths may be formed.

また実施の形態では、各拡大凹部１３ａの大きさが同じ場合について説明したが、これに限られず、各拡大凹部１３ａの大きさは同じでなくてもよい。例えば、流入部３の下流側に連結される分割流路を形成する第３の平板部材１３の平板面に形成される拡大凹部１３ａほど大きくしてもよい。この場合、拡大凹部１３ａの深さＤ、幅Ｗまたは長さＬの少なくとも１つを大きくすることによって、拡大凹部１３ａを大きくすればよい。これにより、流入部３の下流側に連結される流路の分割流路ほど広くなり、流入部３の上流側に連結される流路と下流側に連結される流路との圧力損失のバランスが取れ、より均一に各流路に冷媒が流れる。   Further, in the embodiment, the case where the size of each enlarged recess 13a is the same has been described. However, the present invention is not limited to this, and the size of each enlarged recess 13a may not be the same. For example, you may enlarge as the expansion recessed part 13a formed in the flat plate surface of the 3rd flat plate member 13 which forms the division | segmentation flow path connected with the downstream of the inflow part 3. FIG. In this case, the enlarged concave portion 13a may be enlarged by increasing at least one of the depth D, the width W, or the length L of the enlarged concave portion 13a. Thereby, the divided flow path of the flow path connected to the downstream side of the inflow portion 3 becomes wider, and the balance of the pressure loss between the flow path connected to the upstream side of the inflow portion 3 and the flow path connected to the downstream side. The refrigerant flows through each flow path more uniformly.

（変形例３）
実施の形態では特に言及しなかったが、拡大凹部１３ａを設けない場合と比べて平板冷却部２全体としての圧力損失を下げられればよく、分割流路を形成する第３の平板部材１３の平板面の少なくとも一部に、逆に隙間に突出する凸部が形成されてもよい。 (Modification 3)
Although not particularly mentioned in the embodiment, it is only necessary to reduce the pressure loss of the flat plate cooling unit 2 as a whole as compared with the case where the enlarged recess 13a is not provided, and the flat plate of the third flat plate member 13 forming the divided flow path. On at least a part of the surface, a convex portion that protrudes into the gap may be formed.

（変形例４）
実施の形態では、リブ部材２０が第２の平板部材１２と一体に形成される場合についてに設けられる場合について説明したが、これに限られない。リブ部材２０は、第１の平板部材１１や第３の平板部材１３と一体に形成されてもよい。第３の平板部材１３と一体に形成される場合、リブ部材２０の突起部２０ｂは、第１の平板部材１１側に突出してもよい。または、リブ部材２０は、第１の平板部材１１、第２の平板部材１２、第３の平板部材１３とは別体として形成された後、それらに結合されてもよい。 (Modification 4)
In the embodiment, the case where the rib member 20 is provided in the case where the rib member 20 is formed integrally with the second flat plate member 12 has been described, but the present invention is not limited thereto. The rib member 20 may be formed integrally with the first flat plate member 11 and the third flat plate member 13. When formed integrally with the third flat plate member 13, the protruding portion 20 b of the rib member 20 may protrude toward the first flat plate member 11. Alternatively, the rib member 20 may be formed separately from the first flat plate member 11, the second flat plate member 12, and the third flat plate member 13 and then coupled to them.

（変形例５）
実施の形態では、冷却ユニット１００が適用されるリニアモータは３枚のコイルを含み、これら３枚のコイルでＡ相、Ｂ相の２相を形成する場合について説明したが、これに限られない。リニアモータは１枚、２枚または４枚以上のコイルを含んでいてもよく、すなわちリニアモータは少なくとも１枚のコイルを含んでいればよく、この少なくとも１枚のコイルでＡ相、Ｂ相の２相を形成してもよい。また、リニアモータは３の整数倍の枚数のコイルを含み、３の整数倍の枚数のコイルでＵ相、Ｖ相、Ｗ相の３相を形成してもよい。 (Modification 5)
In the embodiment, the linear motor to which the cooling unit 100 is applied includes three coils, and the three coils form the two phases of A phase and B phase. However, the present invention is not limited to this. . The linear motor may include one, two, or four or more coils. That is, the linear motor only needs to include at least one coil, and the at least one coil is used for A phase and B phase. Two phases may be formed. The linear motor may include a number of coils that is an integral multiple of 3 and may form three phases of the U phase, the V phase, and the W phase with a coil that is an integral multiple of 3.

上述した実施の形態と変形例の任意の組み合わせもまた本発明の実施の形態として有用である。組み合わせによって生じる新たな実施の形態は、組み合わされる実施の形態および変形例それぞれの効果をあわせもつ。   Any combination of the above-described embodiments and modifications is also useful as an embodiment of the present invention. The new embodiment generated by the combination has the effects of the combined embodiment and the modified examples.

２ 平板冷却部、 ２ａ 隙間、 ３ 流入部、 ５ コイル、 ６ Ｏリング、 ７ 隙間、 ８ 流路、 １３ 第３の平板部材、 １３ａ 拡大凹部、 １４ 第４の平板部材、 ２０ リブ部材、 ２０ａ 基部、 ２０ｂ 突起部、 １００ 冷却ユニット。   2 flat plate cooling section, 2a gap, 3 inflow section, 5 coil, 6 O-ring, 7 gap, 8 flow path, 13 third flat plate member, 13a enlarged recess, 14 fourth flat plate member, 20 rib member, 20a base 20b Protrusion, 100 Cooling unit.

Claims (4)

リニアモータの駆動部を構成するコイルを冷却するための冷却ユニットであって、
前記コイルに密着して前記コイルを冷却するための冷却部を備え、
前記冷却部は、第１部材と、前記第１部材に重なる第２部材と、リブ部材と、を含み、
前記第２部材に合わさる前記第１部材の面には凹部が形成され、
前記凹部と、前記第１部材に重ね合わさる前記第２部材との隙間は、前記コイルを冷却するための冷媒の流路を形成し、
前記リブ部材は、前記第１部材または前記第２部材の一方に固定され、前記隙間内において前記第１部材または前記第２部材の他方に当接し、
前記流路の一部は、前記リブ部材によって複数の分割流路に分割され、前記複数の分割流路の少なくとも１つを形成する前記第２部材の面の部分に拡大凹部が形成されていることを特徴とするリニアモータの冷却ユニット。 A cooling unit for cooling a coil constituting a drive unit of a linear motor,
A cooling unit for closely contacting the coil and cooling the coil;
The cooling unit includes a first member, a second member overlapping the first member, and a rib member,
A concave portion is formed on the surface of the first member that fits the second member,
A gap between the concave portion and the second member superimposed on the first member forms a refrigerant flow path for cooling the coil,
The rib member is fixed to one of the first member or the second member, contacts the other of the first member or the second member in the gap,
A part of the flow path is divided into a plurality of divided flow paths by the rib member, and an enlarged recess is formed in a portion of the surface of the second member forming at least one of the plurality of divided flow paths. A cooling unit for a linear motor. 前記複数の分割流路を形成する前記第２部材の面のそれぞれの部分に拡大凹部が形成されていることを特徴とする請求項１に記載のリニアモータの冷却ユニット。   2. The linear motor cooling unit according to claim 1, wherein an enlarged concave portion is formed in each portion of the surface of the second member forming the plurality of divided flow paths. 前記冷却部には複数の流路が形成され、
前記複数の流路はそれぞれ、冷却水を供給する流入部に連結され、
前記流入部の最も上流側に連結される流路の分割流路を形成する前記第２部材の面の部分には前記拡大凹部が形成されないことを特徴とする請求項１または２に記載のリニアモータの冷却ユニット。 A plurality of flow paths are formed in the cooling unit,
Each of the plurality of flow paths is connected to an inflow portion that supplies cooling water,
3. The linear according to claim 1, wherein the enlarged concave portion is not formed in a portion of the surface of the second member that forms a divided flow path of a flow path connected to the most upstream side of the inflow portion. Motor cooling unit. 前記冷却部には複数の流路が形成され、
前記複数の流路はそれぞれ、冷却水を供給する流入部に連結され、
前記流入部のより下流側に連結される流路の分割流路ほど広くなるように、前記拡大凹部が形成されることを特徴とする請求項１または２に記載のリニアモータの冷却ユニット。 A plurality of flow paths are formed in the cooling unit,
Each of the plurality of flow paths is connected to an inflow portion that supplies cooling water,
More so wide as divided passages of consolidation is the flow path on the downstream side, the linear motor of the cooling unit according to claim 1 or 2, characterized in that said enlarged recesses are formed in the inlet portion.
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