WO2014091821A1 - 電動圧縮機およびその組立方法 - Google Patents
電動圧縮機およびその組立方法 Download PDFInfo
- Publication number
- WO2014091821A1 WO2014091821A1 PCT/JP2013/078239 JP2013078239W WO2014091821A1 WO 2014091821 A1 WO2014091821 A1 WO 2014091821A1 JP 2013078239 W JP2013078239 W JP 2013078239W WO 2014091821 A1 WO2014091821 A1 WO 2014091821A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rubber ring
- power line
- casing
- storage container
- fitting
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/0094—Structural association with other electrical or electronic devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0056—Manufacturing winding connections
- H02K15/0062—Manufacturing the terminal arrangement per se; Connecting the terminals to an external circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/14—Casings; Enclosures; Supports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2230/00—Manufacture
- F04C2230/60—Assembly methods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/80—Other components
- F04C2240/803—Electric connectors or cables; Fittings therefor
Definitions
- the present invention relates to a motor-driven compressor including a compressor for compressing a refrigerant gas and a motor for driving the compressor, and a method of assembling the same. More specifically, the present invention relates to a structure for insulating terminals used in a motor-driven compressor.
- the electric compressor accommodates a compression unit and a motor for driving the compression unit in a metal container.
- the refrigerant gas inside the container is compressed by the compression unit and discharged to the outside.
- the metal container has a sealing property, and the electric power to the motor is supplied from the external power supply unit to the motor through the terminal portion provided at the opening of the container.
- the electric compressor is used in the refrigerant circuit, the refrigerant gas inside the compressor may be cooled and liquefied at the time of operation stop, and the liquid refrigerant may be accumulated inside the container. At this time, when the terminal portion comes in contact with the liquid refrigerant, the metal container and the terminal portion short-circuit.
- the current supplied to the terminal portion may leak to the container via the liquid refrigerant.
- PAG polyalkylene glycol oil
- POE polyol ester oil
- Patent Document 1 discloses a technique of insulating a current flowing portion by covering the current flowing portion with a resin. Further, Patent Document 2 discloses a technique for extending the insulation distance between the terminal connection portion and the sealed container.
- the present invention has been made in view of such circumstances, and provides an electric compressor having a terminal insulation structure that is easy to install and can improve insulation performance, and a method of assembling the same. With the goal.
- the electric compressor of the present invention and its assembling method adopt the following means. That is, the electric compressor according to the first aspect of the present invention is an electric motor which is accommodated in a casing and drives a compression unit for compressing a refrigerant introduced into the casing, and supplies electric power to the electric motor.
- An external power line is led from the outside of the casing, and a connection container accommodating the connection electrically connecting the external power line and the internal power line led from the electric motor inside the casing.
- the connection portion storage container is provided with an insertion hole through which the internal power line is inserted, and the connection portion storage container divides the connection portion storage container and a dividing line divides the insertion hole.
- the first rubber ring that closes the insertion hole in a fluid-tight state is disposed in the connection portion storage container, and the first rubber ring is a division that forms the insertion hole. It is sandwiched between the wall portion.
- the connecting portion storage container is divided by the dividing line dividing the insertion hole, and the divided wall portion forming the insertion hole so that the inside of the storage container is liquid-tight It was decided to hold the first rubber ring between them.
- the first rubber ring so as to close the insertion hole in a liquid-tight state, it is possible to prevent the refrigerant in the casing from intruding into the connection portion storage container from the insertion hole.
- the external power line connected to the connection portion storage container can be insulated.
- connection portion storage container is sealed by the first rubber ring sandwiched between the divided wall portions forming the insertion hole, the first rubber ring is missing due to the pressure difference between the inside and the outside of the connection portion storage container. It can be a difficult structure.
- an engagement convex portion or an engagement concave portion is formed in the wall portion forming the insertion hole, and the engagement convex portion is formed in the first rubber ring
- An engaged recess engaged with the part or an engaged protrusion engaged with the engaged recess is provided.
- the first rubber ring is provided with the convex portion or the concave portion corresponding to the convex portion or the concave portion formed in the wall portion forming the insertion hole, the first rubber ring It is possible to prevent the connection container from dropping out.
- the external power line has a terminal pin connected to the connection accommodating portion, and the terminal pin is covered in a fluid-tight manner by a second rubber ring. ing.
- the terminal pin by covering the terminal pin in a fluid-tight manner with the second rubber ring, the contact of the terminal pin with the refrigerant in the casing can be avoided, and the insulation of the terminal portion can be enhanced. it can.
- connection portion storage container is held by the second rubber ring and the electric motor.
- connection portion storage container is sandwiched between the second rubber ring and the electric motor, the current flow path can be closed, and the insulation can be enhanced. In addition, it is possible to prevent separation of the fitted connection container.
- An electric compressor is an electric motor which is accommodated in a casing and drives a compression unit for compressing a refrigerant introduced into the casing, and an external power line for supplying electric power to the electric motor.
- a connecting portion accommodating container for accommodating a connecting portion for electrically connecting the external power line and the internal power line led from the electric motor inside the casing.
- the external power line has a terminal pin connected to the connection accommodating portion, and the terminal pin is covered in a fluid-tight manner by a second rubber ring.
- the terminal pin by covering the terminal pin in a fluid-tight manner with the second rubber ring, the contact of the terminal pin with the refrigerant in the casing can be avoided, and the insulation of the terminal portion can be enhanced. it can.
- a fitted recess or a piece to be fitted with the casing side and / or the connection portion storage container side at both ends or one end of the second rubber ring A fitting protrusion is provided, and a fitting protrusion which fits to the fitting recess or the fitting protrusion of the second rubber ring on the casing side and / or the connection portion storage container side A part or a fitting recess is provided.
- the second rubber ring is pinched, there is a possibility that the reaction force of the second rubber ring becomes excessive when pinched excessively, in which case the connection portion container or the opposite side thereof For example, there is a risk of damaging the glass terminal located in
- the clearance of the portion sandwiching the second rubber ring is determined by the dimensions of various parts, when the dimensional tolerances are stacked, the tolerance of the clearance dimension increases. In order to avoid such a defect, it is conceivable to lower the rigidity against the displacement by actively reducing the rigidity of the second rubber ring.
- the rigidity can be reduced simply by thinning the entire second rubber ring, but if doing so, the contact area between the second rubber ring and the connection storage container or the second rubber ring and the glass terminal becomes It may be narrowed, and the required insulation performance may not be satisfied. Therefore, the second rubber ring is provided with a fitting recess and / or a fitting protrusion, and the fitting area reduces the cross-sectional area, thereby reducing the insulation performance, and the connection part due to an excessive load. It is possible to prevent damage to the storage container and the glass terminal. In addition, since the second rubber ring and the casing side and / or the connection portion storage container side are engaged due to the unevenness, the second rubber ring is positively sandwiched because the seal is performed by the uneven portion. There is no need to apply a large load.
- a natural length of the second rubber ring in the axial direction of the fitted recess and / or the fitted protrusion corresponds to the casing side and / or The length in the axial direction of the fitting convex portion and / or the fitting concave portion provided on the connection portion storage container side is longer.
- the natural length in the axial direction of the fitting recess and / or the fitting protrusion of the second rubber ring is made longer than the length in the axial direction of the corresponding fitting protrusion and / or the fitting recess.
- the fitted recess and / or the fitted protrusion of the two rubber rings were made to come first against the other side. Thereby, it is possible to absorb displacements such as tolerances that are difficult to predict in the narrow portion of the second rubber ring whose cross-sectional area is reduced.
- a portion of the second rubber ring is thinner than the other portions.
- the electric compressor according to the first aspect of the present invention includes a resin case having a lid for pressing and holding the coil at an end portion where the coil of the electric motor is wound, and one of the divided connection container accommodating containers And the lid are integrated.
- the electric compression can be performed easily without losing the purpose of pressing the coil. It can be a machine.
- a method of assembling an electric compressor according to a second aspect of the present invention is the method of assembling an electric compressor according to any one of the above, further comprising: an internal power line inserting step of inserting the internal power line into the first rubber ring; A connection portion storage container fitting step of fitting the divided connection portion storage container so that the first rubber ring into which the power line is inserted is held between the wall portions, the second rubber ring, and And a terminal portion connecting step of connecting the terminal pin to which the glass terminal plate is attached to the connection portion storage container.
- the divided connection portion storage container is fitted so that the first rubber ring is held. Since the connecting portion storage container fitting step is performed, it is possible to easily assemble a high connection portion storage container simply by sandwiching the rubber ring with the divided connection portion storage containers. Furthermore, since it has the terminal part connection process which connects the terminal part to which the 2nd rubber ring was attached to a connection part storage container, it can be set as an electric compressor with high insulation, without spoiling assembly nature. .
- the terminals in the electric compressor, the terminals can be isolated without impairing the assemblability.
- the electric compressor 21 is used, for example, as a compressor of a vehicle air conditioner.
- the electric compressor 21 houses the scroll compressor 13 and the electric motor 1 for driving the scroll compressor 13 in the casing 2.
- the casing 2 is a substantially cylindrical main body for accommodating the scroll compressor 13 and the electric motor 1, and the bottom surface of the inverter housing 43 for closing the opening at one end side (left side in FIG. 1) of the main body It is comprised by (right end surface in FIG. 1).
- the inverter accommodating portion 43 has a container shape for accommodating the inverter, and is assembled and fixed to the main body portion of the casing 2 by the second bolt 46.
- the casing 2 has a sealing property with respect to the supplied refrigerant, and the electric power to the electric motor 1 is obtained by inserting an external power line 4 passing through an opening formed in the bottom of the inverter accommodating portion 43 constituting the casing 2.
- the electric motor 1 is supplied to the electric motor 1 from an inverter (not shown) in the inverter housing 43.
- the external power line 4 is composed of a glass terminal plate 29, a terminal pin 27, and a insulator 31. Further, the glass terminal plate 29 and one end surface of the inverter accommodating portion 43 are fastened and fixed by a first bolt 45. Thus, the external power line 4 is assembled and fixed to the inverter accommodating portion 43.
- a terminal case (connection portion accommodation container) 5 is provided between the inverter accommodation portion 43 and the electric motor 1.
- the external power line 4 and the internal power line 3 led from the electric motor 1 are connected.
- the terminal case 5 is fixed in a state of being sandwiched between the bottom surface of the inverter accommodating portion 43 and the end surface of the electric motor 1 (specifically, the lid 17 for pressing the coil 15).
- the terminal case 5 accommodates three connection portions 6 for connecting three power lines in parallel, and a terminal case portion 51 for accommodating the respective connection portions 6, 52 and 53 have substantially the same shape.
- the terminal case 5 has a shape in which the terminal case portions 51, 52, 53 are integrated in parallel and at different positions in the longitudinal direction (left and right direction in FIG. 3).
- a terminal case for connecting three power lines will be described, but the present invention is not limited to this, and it is possible to use one power line, two power lines, or four or more power lines. It may be.
- terminal case 5 accommodates connection portion 6 electrically connecting external power line 4 and internal power line 3 inside casing 2.
- the internal power line 3 is led from the electric motor 1 and inserted into an insertion hole 9 provided in the terminal case 5.
- the terminal case 5 is divided by dividing lines 7 so as to be divided into upper and lower terminal case 5a and lower terminal case 5b. Further, the dividing line 7 is provided to divide the insertion hole 9 up and down.
- the upper terminal case 5a has a claw portion 37b which is fitted into the claw fitting portion 37a (see FIG. 7) of the lower terminal case 5b, and the respective claw portions 37b Are spaced apart.
- a terminal pin connection hole 23 to which a terminal pin 27 which is a part of the external power line 4 is connected is provided at a position apart from the insertion hole 9 As shown in FIG. 2, the end portion of the terminal pin 27 is inserted in the direction perpendicular to the dividing line 7 and near the center of the terminal case 5. The other end of the terminal pin 27 is connected to an inverter (not shown) located outside the casing 2.
- the first rubber ring 11 a is sandwiched between the wall portions 8 of the divided terminal cases 5 forming the insertion holes 9.
- an engagement concave portion 33a corresponding to the engagement convex portion 35a (see FIGS. 6 and 8) of the wall portion 8 forming the insertion hole 9 of the terminal case 5.
- the engagement recess 33a is located approximately at the center of the side surface of the first rubber ring 11a having the engagement recess 33a.
- a hollow through hole 39 having a diameter substantially equal to the diameter of the internal power line 3 is provided on the side surface of the first rubber ring 11a which does not have the engaged recess 33a.
- the engagement convex portion 35a of the wall portion 8 forming the insertion hole 9 described above and the concavities and convexities of the corresponding engagement concave portion 33a may be reverse, that is, the engagement concave portion and the engagement convex portion.
- the glass terminal plate 29 is a plate-like member made of glass, and is connected to the terminal pin 27 so as to be orthogonal to the axis of the terminal pin 27.
- the second rubber ring 11 b covers a portion where the terminal pin 27 between the glass terminal plate 29 and the terminal case 5 is in contact with the refrigerant in the casing 2.
- the distance of the portion covered by the second rubber ring 11b that is, the distance between the glass terminal plate 29 and the terminal case 5 is about twice the vertical dimension (vertical direction in FIG. 2) of the insulator 31.
- the second rubber ring 11 b has a step shape in which the diameter of a part (in the vertical dimension in FIG. 1 and in the range of about 1 ⁇ 5) is small, and the outer side The sheath 31 is positioned in the space.
- an iron core 41 constituting the electric motor 1 is sandwiched by bobbins 19 made of resin (upper and lower in the same figure), and a coil 15 is wound around the bobbin 19.
- a lid 17 for holding the coil 15 is disposed on the side where the terminal case 5 of the bobbin 19 is located (upper side in FIG. 11), and the lid 17 and the lower terminal case 5b are integrated.
- the length of the lid 17 in the direction orthogonal to the motor axis L is substantially the same as that of the bobbin 19 and covers the portion where the coil 15 is wound. There is.
- the internal power line 3 is inserted into the through hole 39 of the first rubber ring 11a (internal power line insertion step).
- the lower terminal case 5b is provided on the tab portion 37b provided on the upper terminal case 5a so that the inserted first rubber ring 11a is held between the divided wall portions 8 forming the insertion hole 9
- the hook fitting portion 37a is fitted (terminal case fitting step).
- the terminal pin 27 to which the second rubber ring 11 b and the glass terminal plate 29 are attached is connected to the terminal pin connection hole 23 provided in the terminal case 5 (terminal portion connection step).
- the first rubber ring 11a is divided between the divided wall portions 8 which form the insertion hole 9 so that the terminal case 5 is divided by the dividing line 7 which divides the insertion hole 9 and the inside of the storage container is liquid-tight. Since the second rubber ring 11b is attached so as to cover the portion where the terminal pin 27 contacts the refrigerant in the casing, the refrigerant can be prevented from coming into contact with the terminal pin 27, thereby simplifying the process.
- the terminal portion can be insulated by the structure. Further, since the glass terminal plate 29 which is a part of the external power line 4 and one end surface of the inverter accommodating portion 43 are fastened and fixed by the first bolt 45, the liquid refrigerant may leak to the inverter accommodating portion 43 side. Absent.
- the terminal case 5 is sealed by the first rubber ring 11a, the pressure difference between the inside and the outside of the terminal case 5 can make the first rubber ring 11a less likely to be detached. Furthermore, the first rubber ring 11 a is missing from the terminal case 5 by providing the first rubber ring 11 a with the engagement concave portion 33 a corresponding to the engagement convex portion 35 a formed in the wall portion 8 forming the insertion hole 9. Can be prevented.
- the tab fitting portion 37a provided in the lower terminal case 5b is fitted into the tab portion 37b provided in the upper terminal case 5a, and the terminal case 5 is sandwiched between the second rubber ring 11b and the electric motor 1, so that the upper portion It is possible to prevent the terminal case 5a and the lower terminal case 5b from being separated.
- the terminal case 5 since the terminal case 5 has one end surface sandwiched by one end surface of the inverter accommodating portion 43 and the second rubber ring 11 b, the other end surface is sandwiched by the lid 17 that holds the coil 15, the second rubber ring 11b can also be used as a shock absorbing material when external force is applied.
- the coil 15 When vibration or the like is applied to the bobbin 19 around which the coil 15 is wound, the coil 15 is broken and insulation failure of the coil occurs. Therefore, although the coil 15 is pressed by the lid 17 in order to prevent the coil 15 from fraying, the coil 15 is pressed because the lower terminal case 5 b and the lid 17 for pressing the coil 15 are integrated.
- the electric compressor can be easily assembled without losing the purpose.
- the inside of the terminal case 5 can be easily made liquid-tight by the assembly method including the terminal case fitting step of fitting the terminal case 5.
- the terminal case 5 By thus forming the terminal case 5 having an insulating function without covering the entire terminal portion with resin or rubber, the terminal portion can be easily insulated in assembly and mounting.
- the example applied to the scroll compressor used for a vehicle air conditioner was explained in the above-mentioned embodiment, it is good also as using for a common air conditioner, and multistage compression combined with a rotary compressor and other types of compression mechanisms. It may be a machine.
- mating convex portions are provided on both ends of the second rubber ring 11b, and on the casing side and the connection portion storage container side, mating convex portions of the second rubber ring are provided.
- a mating recess is provided for mating.
- the natural length in the axial direction of the fitting convex portion of the second rubber ring 11b is made longer than the length in the axial direction of the fitting recess provided on the corresponding casing side and / or the connection portion storage container side Is preferred.
- the fitting convex portion of the second rubber ring comes first against the other side, and the narrow portion of the second rubber ring whose cross-sectional area is reduced absorbs a displacement such as a tolerance that is difficult to predict be able to.
- the axial length of the fitting convex portion on the casing side is made longer than that of FIG. 12 (a) (for example, one fitting convex)
- the part may be made longer than the other fitting convex part), and the rubber may be crushed at a portion of low rigidity to reduce the load due to the rubber reaction force.
- the end of the second rubber ring 11b on the connection portion storage container side (downward in FIG. 12) is a fitting recess, and the other end on the casing side is fitting It may be a convex portion. Further, as shown in FIG. 12 (d), a fitting recess may be provided on both ends of the second rubber ring 11b.
- the axial length of the fitting recess on the casing side is made longer than in FIG. 12 (d) (for example, one fitting recess).
- the load may be reduced by the rubber reaction force by crushing the rubber at a portion where the rigidity is weak, by making the length longer than the other fitted recess.
- a fitting protrusion is provided at one end (the casing side in the same figure) of the second rubber ring 11b, and the other end is provided with the second rubber ring 11b.
- a shape having the same diameter as the central portion may be adopted.
- the cross-sectional area is made smaller than the other portions, and the rubber is crushed by the fitted convex portion whose rigidity is weakened, thereby reducing the load due to the rubber reaction force.
- the hermetic seal 12 may be adopted and assembled on the casing side.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Compressor (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
電動圧縮機を冷媒回路に用いた場合、運転停止時に、圧縮機内部の冷媒ガスが冷却して液化し、液冷媒が容器内部に溜まる場合がある。このとき、上記端子部が液冷媒に接触すると、金属製の容器と端子部とが短絡する。そのため、電動圧縮機の運転を開始したときに、端子部に供給した電流が液冷媒を介して容器に漏洩するおそれがある。
特に、冷媒と共に用いる潤滑油として、POE(ポリオールエステル油)ではなく、体積抵抗率が低いPAG(ポリアルキレングリコール油)などを採用する場合、漏電が生じやすくなるため、端子部の絶縁性を確保する必要がある。
また、特許文献2には、端子接続部と密閉容器との間の絶縁距離を延長する技術が開示されている。
すなわち、本発明の第1の態様に係る電動圧縮機は、ケーシング内に収容され、該ケーシング内に導かれた冷媒を圧縮する圧縮部を駆動する電動モータと、前記電動モータに電力を供給する外部電力線が前記ケーシングの外部から導かれ、該外部電力線と該電動モータから導かれた内部電力線とを該ケーシングの内部で電気的に接続する接続部を収容する接続部収容容器と、を備えた電動圧縮機において、前記接続部収容容器には、前記内部電力線が挿通される挿通穴が設けられ、前記接続部収容容器は、該接続部収容容器を分割するとともに前記挿通穴を分割する分割線にて分割可能とされており、前記接続部収容容器内には、前記挿通穴を液密状態に閉塞する第一ゴムリングが配置され、該第一ゴムリングは、前記挿通穴を形成する分割された壁部間で狭持されている。
また、接続部収容容器は、挿通穴を形成する分割された壁部間で狭持された第一ゴムリングにより密閉されているため、接続部収容容器内外の圧力差により第一ゴムリングが欠落しづらい構造とすることができる。
このような不具合を回避するため、第二ゴムリングの剛性を積極的に落として、変位に対しての荷重を下げることが考えられる。例えば、単純に第二ゴムリングの全体を細くしても剛性を落とすことはできるが、そのようにすると、第二ゴムリングと接続部収納容器や第二ゴムリングとガラス端子間の接触面積が狭くなり、必要とされる絶縁性能を満足できなくなるおそれがある。
そのため、第二ゴムリングに被嵌合凹部および/または被嵌合凸部を設け、この嵌合部分によって横断面積を減少させることにより、絶縁性能を落とすことなく、また、過大な荷重による接続部収納容器やガラス端子の破損を防ぐことができる。
また、第二ゴムリングとケーシング側および/または接続部収容容器側との間で凹凸による嵌合を行うこととしたので、凹凸部分でシールされるため、かならずしも第二ゴムリングを積極的に挟み込んで大きな荷重を与える必要はない。
ケーシング2は、スクロール圧縮部13及び電動モータ1を収容する略円筒形状とされた本体部に対して、この本体部の一端側(図1において左側)開口を閉塞するインバータ収容部43の底面(図1において右側端面)とによって構成されている。
インバータ収容部43は、インバータを収容する容器形状とされており、第二ボルト46によりケーシング2の本体部に対して組付け固定されている。
内部電力線3は、電動モータ1から導かれ、端子ケース5に設けられた挿通穴9に挿通される。
図4に示すように、端子ケース5は、上部端子ケース5aと下部端子ケース5bの上下に分割されるように分割線7にて分割されている。この分割線7は、さらに、挿通穴9を上下に分割するように設けられている。
また、上部端子ケース5aは、図4及び図5に示すように、下部端子ケース5bのツメ嵌め込み部37a(図7参照)に嵌めこまれるツメ部37bを有しており、それぞれのツメ部37bは離間して設けられている。
上部端子ケース5aの上面には、図3に示すように、挿通穴9と離れた位置に外部電力線4の一部である端子ピン27が接続される端子ピン接続穴23が設けられており、図2に示すように、端子ピン27の端部は分割線7と垂直方向に端子ケース5の中央近くまで挿入されている。また、端子ピン27の他端部は、ケーシング2の外側に位置するインバータ(図示せず)に接続されている。
図9に示すように、第一ゴムリング11aには、端子ケース5の挿通穴9を形成する壁部8の係合凸部35a(図6及び図8参照)に対応する被係合凹部33aを有している。被係合凹部33aは、第一ゴムリング11aの被係合凹部33aを有する側面においてほぼ中央に位置している。
また、第一ゴムリング11aにおける被係合凹部33aを有していない側面には、内部電力線3の径と略同等の径の空洞状の貫通穴39を有している。
上述した挿通穴9を形成する壁部8の係合凸部35aとそれに対応する被係合凹部33aの凹凸が逆、すなわち係合凹部及び被係合凸部であっても良い。
また、図2において、第二ゴムリング11bは、一部(同図縦寸法において1/5程度の範囲)の径が小さくなっている段差形状となっており、径が小さくなっている外側の空間にガイシ31が位置するようになっている。
第二ゴムリング11bの内周面(端子ピン27と接触する部分)及び底面(端子ケース5と接触する部分)に複数の凸部及び凹部を設けて、ラビリンス効果によってシール性を向上させてもよい。
ボビン19の端子ケース5が位置する側(図11において上側)には、コイル15を押止する蓋17が配置されており、蓋17と下部端子ケース5bとが一体となっている。
図11において、モータ軸線Lと直交する方向(同図横方向)の蓋17の長さは、ボビン19とほぼ同じ大きさとなっており、コイル15が巻かれている部分を覆うようになっている。
先ず、内部電力線3を第一ゴムリング11aの貫通穴39に挿通する(内部電力線挿通工程)。
次に、挿通された第一ゴムリング11aが挿通穴9を形成する分割された壁部8間で狭持されるように上部端子ケース5aに設けられたツメ部37bに下部端子ケース5bに設けられたツメ嵌め込み部37aを嵌合する(端子ケース嵌合工程)。
そして、第二ゴムリング11b及びガラス端子板29が取り付けられた端子ピン27を端子ケース5に設けられた端子ピン接続穴23に接続する(端子部接続工程)。
挿通穴9を分割する分割線7にて端子ケース5を分割するとともに、収容容器内が液密状態となるように挿通穴9を形成する分割された壁部8間で第一ゴムリング11aを狭持することとし、端子ピン27がケーシング内の冷媒と接触する部分を覆うように第二ゴムリング11bを取り付けたことにより、冷媒が端子ピン27に接触することを防ぐことができ、簡易な構造にて端子部を絶縁することができる。
また、外部電力線4の一部であるガラス端子板29とインバータ収容部43の一端面とを第一ボルト45にて締め付け固定しているため、インバータ収容部43側に液冷媒が漏洩することがない。
さらに、第一ゴムリング11aに挿通穴9を形成する壁部8に形成された係合凸部35aと対応する被係合凹部33aを設けることで、第一ゴムリング11aが端子ケース5から欠落することを防止することができる。
また、端子ケース5は、一端面が、インバータ収容部43の一端面及び第二ゴムリング11bにて、他端面が、コイル15を押止する蓋17により挟まれているため、第二ゴムリング11bを外部から力が加わった際の緩衝材とすることもできる。
上記実施形態では、車両用空調装置に用いられるスクロール圧縮機に適用した例について説明したが、一般の空調機に用いることとしてもよく、またロータリ圧縮機及び他型式の圧縮機構と組合せた多段圧縮機であってもよい。
図12及び図13には、図2に示した第二ゴムリング11b周りの構造の変形例が示されている。
この嵌合部分によって横断面積を中央の軸部よりも減少させることにより、絶縁性能を落とすことなく、また、過大な荷重による接続部収納容器やガラス端子の破損を防ぐことができる。また、第二ゴムリング11bとケーシング側および接続部収容容器側との間で凹凸による嵌合を行うこととしたので、凹凸部分でシールされるため、かならずしも第二ゴムリングを積極的に挟み込んで大きな荷重を与える必要はない。
図13(d)のように、絶縁性を確保するためにケーシング側にハーメチックシール12を採用して組み立てても良い。
2 ケーシング
3 内部電力線
4 外部電力線
5 端子ケース(接続部収容容器)
5a 上部端子ケース
5b 下部端子ケース
6 接続部
7 分割線
8 壁部
9 挿通穴
11a 第一ゴムリング
11b 第二ゴムリング
13 スクロール圧縮部
15 コイル
17 蓋
19 樹脂ケース(ボビン)
21 電動圧縮機
23 端子ピン接続穴
27 端子ピン
29 ガラス端子板
31 ガイシ
32 ガラス
33a 被係合凹部
35a 係合凸部
37a ツメ嵌め込み部
37b ツメ部
39 貫通穴
41 鉄心
43 インバータ収容部
45 第一ボルト
46 第二ボルト
51、52、53 端子ケース部
L モータ軸線
Claims (10)
- ケーシング内に収容され、該ケーシング内に導かれた冷媒を圧縮する圧縮部を駆動する電動モータと、
前記電動モータに電力を供給する外部電力線が前記ケーシングの外部から導かれ、該外部電力線と該電動モータから導かれた内部電力線とを該ケーシングの内部で電気的に接続する接続部を収容する接続部収容容器と、
を備えた電動圧縮機において、
前記接続部収容容器には、前記内部電力線が挿通される挿通穴が設けられ、
前記接続部収容容器は、該接続部収容容器を分割するとともに前記挿通穴を分割する分割線にて分割可能とされており、
前記接続部収容容器内には、前記挿通穴を液密状態に閉塞する第一ゴムリングが配置され、
該第一ゴムリングは、前記挿通穴を形成する分割された壁部間で狭持されている電動圧縮機。 - 前記挿通穴を形成する前記壁部には、係合凸部または係合凹部が形成され、
前記第一ゴムリングには、前記係合凸部に係合する被係合凹部または前記係合凹部に係合する被係合凸部が設けられている請求項1に記載の電動圧縮機。 - 前記外部電力線は、前記接続収容部に接続される端子ピンを有しており、
前記端子ピンは、第二ゴムリングによって液密に覆われている請求項1または請求項2に記載の電動圧縮機。 - 前記接続部収容容器が、前記第二ゴムリングと前記電動モータとにより挟持されている請求項3に記載の電動圧縮機。
- ケーシング内に収容され、該ケーシング内に導かれた冷媒を圧縮する圧縮部を駆動する電動モータと、
前記電動モータに電力を供給する外部電力線が前記ケーシングの外部から導かれ、該外部電力線と該電動モータから導かれた内部電力線とを該ケーシングの内部で電気的に接続する接続部を収容する接続部収容容器と、
を備えた電動圧縮機において、
前記外部電力線は、前記接続収容部に接続される端子ピンを有しており、
前記端子ピンは、第二ゴムリングによって液密に覆われている電動圧縮機。 - 前記第二ゴムリングの両端または一端には、前記ケーシング側および/または前記接続部収容容器側に対して嵌合する被嵌合凹部または被嵌合凸部が設けられ、
前記ケーシング側および/または前記接続部収容容器側には、前記第二ゴムリングの前記被嵌合凹部または前記被嵌合凸部に対して嵌合する嵌合凸部または嵌合凹部が設けられている請求項3から請求項5のいずれかに記載の電動圧縮機。 - 前記第二ゴムリングの前記被嵌合凹部および/または前記被嵌合凸部の軸線方向における自然長が、対応する前記ケーシング側および/または前記接続部収容容器側に設けられた前記嵌合凸部および/または前記嵌合凹部の軸線方向における長さよりも長い請求項6に記載の電動圧縮機。
- 前記第二ゴムリングの一部分が、他の部分よりも細くされている請求項3から請求項7のいずれかに記載の電動圧縮機。
- 前記電動モータのコイルが巻かれた端部に前記コイルを押止する蓋を有する樹脂ケースを備え、
分割された前記接続部収容容器の一方と前記蓋とが一体となっている請求項1から請求項8のいずれかに記載の電動圧縮機。 - 請求項1から請求項9のいずれかに記載された電動圧縮機の組立方法において、
前記第一ゴムリングに前記内部電力線を挿通する内部電力線挿通工程と、
前記内部電力線が挿通された前記第一ゴムリングを前記壁部間で狭持されるように、分割された前記接続部収容容器を嵌合する接続部収容容器嵌合工程と、
前記第二ゴムリング及びガラス端子板が取り付けられた前記端子ピンを前記接続部収容容器に接続する端子部接続工程と、
を有する電動圧縮機の組立方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112013005946.0T DE112013005946B4 (de) | 2012-12-12 | 2013-10-17 | Elektrischer Verdichter und Verfahren zu dessen Zusammenbau |
US14/647,072 US10879756B2 (en) | 2012-12-12 | 2013-10-17 | Electric compressor and method for assembling same |
CN201380064245.4A CN104838139B (zh) | 2012-12-12 | 2013-10-17 | 电动压缩机,及其装配方法 |
US16/951,610 US11462965B2 (en) | 2012-12-12 | 2020-11-18 | Electric compressor and method for assembling same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012271649A JP5518169B1 (ja) | 2012-12-12 | 2012-12-12 | 電動圧縮機およびその組立方法 |
JP2012-271649 | 2012-12-12 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/647,072 A-371-Of-International US10879756B2 (en) | 2012-12-12 | 2013-10-17 | Electric compressor and method for assembling same |
US16/951,610 Division US11462965B2 (en) | 2012-12-12 | 2020-11-18 | Electric compressor and method for assembling same |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014091821A1 true WO2014091821A1 (ja) | 2014-06-19 |
Family
ID=50934120
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/078239 WO2014091821A1 (ja) | 2012-12-12 | 2013-10-17 | 電動圧縮機およびその組立方法 |
Country Status (5)
Country | Link |
---|---|
US (2) | US10879756B2 (ja) |
JP (1) | JP5518169B1 (ja) |
CN (1) | CN104838139B (ja) |
DE (1) | DE112013005946B4 (ja) |
WO (1) | WO2014091821A1 (ja) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6613986B2 (ja) * | 2016-03-25 | 2019-12-04 | 株式会社豊田自動織機 | 電動式流体機械 |
FR3050590B1 (fr) * | 2016-04-21 | 2021-04-09 | Valeo Equip Electr Moteur | Machine electrique tournante ameliorant une connexion entre des contacts d'enroulements de phases et des terminaux d'un connecteur |
KR102583934B1 (ko) | 2016-09-08 | 2023-10-05 | 한온시스템 주식회사 | 압축기 |
DE112016004914T5 (de) * | 2016-04-22 | 2018-07-12 | Hanon Systems | Verdichter |
KR102500648B1 (ko) * | 2016-04-22 | 2023-02-16 | 한온시스템 주식회사 | 압축기 |
KR102517731B1 (ko) * | 2016-04-22 | 2023-04-05 | 한온시스템 주식회사 | 압축기 |
KR102559314B1 (ko) * | 2016-08-25 | 2023-07-26 | 한온시스템 주식회사 | 클러스터 조립체 및 이를 포함하는 전동식 압축기 |
DE102016223576B4 (de) * | 2016-11-28 | 2022-03-31 | Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg | Elektrischer Kältemittelantrieb |
CN106654665B (zh) * | 2017-01-24 | 2022-11-15 | 广东美芝制冷设备有限公司 | 用于电动压缩机的连接组件及具有其的电动压缩机 |
JP6842385B2 (ja) | 2017-08-25 | 2021-03-17 | 三菱重工サーマルシステムズ株式会社 | スクロール圧縮機 |
JP6890070B2 (ja) * | 2017-09-05 | 2021-06-18 | 三菱重工サーマルシステムズ株式会社 | 圧縮機ケーシングの製造方法、ケーシング素材 |
JP6943197B2 (ja) | 2018-02-07 | 2021-09-29 | 株式会社豊田自動織機 | 電動圧縮機 |
JP6881378B2 (ja) * | 2018-03-30 | 2021-06-02 | 株式会社豊田自動織機 | 電動圧縮機 |
CN110854559A (zh) | 2018-08-20 | 2020-02-28 | 松下·万宝(广州)压缩机有限公司 | 一种接线柱密封盖、上盖组件及压缩机 |
JP7263902B2 (ja) * | 2019-04-25 | 2023-04-25 | 株式会社豊田自動織機 | 電動圧縮機及び電動圧縮機の組立方法 |
JP7256461B2 (ja) * | 2019-09-27 | 2023-04-12 | 株式会社豊田自動織機 | 電動圧縮機 |
WO2022014415A1 (ja) | 2020-07-15 | 2022-01-20 | ダイキン工業株式会社 | 圧縮機における冷媒としての使用、圧縮機、および、冷凍サイクル装置 |
WO2022242399A1 (zh) * | 2021-05-17 | 2022-11-24 | 安徽威灵汽车部件有限公司 | 盖板组件、定子、电机、压缩机和车辆 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011096636A (ja) * | 2009-09-30 | 2011-05-12 | Sanyo Electric Co Ltd | 回路モジュールおよびそれを備えた電動車両 |
JP2011211876A (ja) * | 2010-03-30 | 2011-10-20 | Toyota Industries Corp | 電動圧縮機 |
JP2012082719A (ja) * | 2010-10-07 | 2012-04-26 | Toyota Industries Corp | 電動圧縮機 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06235388A (ja) | 1993-02-08 | 1994-08-23 | Sanden Corp | 電動圧縮機及びその製造方法 |
US6315528B1 (en) * | 1999-05-27 | 2001-11-13 | Scroll Technologies | Terminal connection in small area of scroll compressor and method for carrying out same |
US6273754B1 (en) * | 2000-04-13 | 2001-08-14 | Tecumseh Products Company | Protective covering for the terminal assembly of a hermetic compressor assembly |
JP3971987B2 (ja) * | 2002-06-13 | 2007-09-05 | 日本電産サンキョー株式会社 | モータのステータ構造 |
US7197892B2 (en) | 2003-06-11 | 2007-04-03 | Denso Corporation | Encapsulated electrically driven compressor |
JP4718862B2 (ja) | 2005-02-23 | 2011-07-06 | 三菱重工業株式会社 | 電動圧縮機 |
JP4829521B2 (ja) | 2005-04-14 | 2011-12-07 | サンデン株式会社 | スクロール型流体機械 |
US8235687B2 (en) * | 2005-05-30 | 2012-08-07 | Sanden Corporation | Electric compressor |
JP5007169B2 (ja) | 2007-02-20 | 2012-08-22 | カルソニックカンセイ株式会社 | 電動コンプレッサ |
JP5109642B2 (ja) | 2007-12-18 | 2012-12-26 | 株式会社豊田自動織機 | 電動圧縮機 |
JP5157513B2 (ja) * | 2008-02-20 | 2013-03-06 | 住友電装株式会社 | グロメット |
JP4991664B2 (ja) | 2008-09-11 | 2012-08-01 | 株式会社豊田自動織機 | 電動圧縮機 |
DE102010043773B4 (de) * | 2010-01-29 | 2014-05-22 | Halla Visteon Climate Control Corporation 95 | Elektrische Durchführung für Hermetikverdichter |
JP5594836B2 (ja) * | 2010-11-24 | 2014-09-24 | 株式会社ヴァレオジャパン | 電動型圧縮機 |
-
2012
- 2012-12-12 JP JP2012271649A patent/JP5518169B1/ja active Active
-
2013
- 2013-10-17 US US14/647,072 patent/US10879756B2/en active Active
- 2013-10-17 DE DE112013005946.0T patent/DE112013005946B4/de active Active
- 2013-10-17 CN CN201380064245.4A patent/CN104838139B/zh active Active
- 2013-10-17 WO PCT/JP2013/078239 patent/WO2014091821A1/ja active Application Filing
-
2020
- 2020-11-18 US US16/951,610 patent/US11462965B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011096636A (ja) * | 2009-09-30 | 2011-05-12 | Sanyo Electric Co Ltd | 回路モジュールおよびそれを備えた電動車両 |
JP2011211876A (ja) * | 2010-03-30 | 2011-10-20 | Toyota Industries Corp | 電動圧縮機 |
JP2012082719A (ja) * | 2010-10-07 | 2012-04-26 | Toyota Industries Corp | 電動圧縮機 |
Also Published As
Publication number | Publication date |
---|---|
DE112013005946T5 (de) | 2015-08-20 |
CN104838139B (zh) | 2017-05-03 |
US11462965B2 (en) | 2022-10-04 |
DE112013005946B4 (de) | 2024-05-29 |
US10879756B2 (en) | 2020-12-29 |
US20210075291A1 (en) | 2021-03-11 |
US20150303762A1 (en) | 2015-10-22 |
JP5518169B1 (ja) | 2014-06-11 |
CN104838139A (zh) | 2015-08-12 |
JP2014114795A (ja) | 2014-06-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2014091821A1 (ja) | 電動圧縮機およびその組立方法 | |
JP4998377B2 (ja) | 電動圧縮機 | |
JP4998527B2 (ja) | 電動圧縮機 | |
KR102583934B1 (ko) | 압축기 | |
JP6507270B2 (ja) | 圧縮機 | |
JP6156705B2 (ja) | 電動圧縮機 | |
US20140375157A1 (en) | Electric Compressor | |
US8235687B2 (en) | Electric compressor | |
US8231365B2 (en) | Electric compressor | |
KR101616624B1 (ko) | 전동 압축기 | |
JP6829745B2 (ja) | 圧縮機駆動装置用密封アレンジメント、圧縮機駆動装置及びその組立方法 | |
US10107293B2 (en) | Electric compressor | |
US20100247348A1 (en) | Terminal device for electric compressor | |
US20090053082A1 (en) | Electric Motor-Driven Compressor | |
US20140377097A1 (en) | Motor-driven compressor | |
US20100247353A1 (en) | Terminal device for electric compressor | |
JP5974751B2 (ja) | 電動圧縮機 | |
US20100254833A1 (en) | Terminal device for electric compressor | |
KR102262971B1 (ko) | 전동 압축기 | |
EP2623786B1 (en) | Motor-driven compressor | |
JP5687226B2 (ja) | 電動圧縮機及び収納部材 | |
JP2012107565A (ja) | 電動圧縮機 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13863435 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14647072 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1120130059460 Country of ref document: DE Ref document number: 112013005946 Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 13863435 Country of ref document: EP Kind code of ref document: A1 |