KR20140102413A - Motor-driven compressor - Google Patents

Motor-driven compressor Download PDF

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Publication number
KR20140102413A
KR20140102413A KR1020130015642A KR20130015642A KR20140102413A KR 20140102413 A KR20140102413 A KR 20140102413A KR 1020130015642 A KR1020130015642 A KR 1020130015642A KR 20130015642 A KR20130015642 A KR 20130015642A KR 20140102413 A KR20140102413 A KR 20140102413A
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KR
South Korea
Prior art keywords
cover
inverter
motor
unit
compressor
Prior art date
Application number
KR1020130015642A
Other languages
Korean (ko)
Inventor
홍선주
임권수
원종보
진형규
이동우
김국진
Original Assignee
한라비스테온공조 주식회사
(주)디씨티
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 한라비스테온공조 주식회사, (주)디씨티 filed Critical 한라비스테온공조 주식회사
Priority to KR1020130015642A priority Critical patent/KR20140102413A/en
Publication of KR20140102413A publication Critical patent/KR20140102413A/en

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Classifications

    • 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
    • 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
    • F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
    • F04C18/0269—Details concerning the involute wraps
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0021—Systems for the equilibration of forces acting on the pump
    • 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
    • F04C2210/00—Fluid
    • F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
    • 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
    • F04C2240/40—Electric motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

The present invention relates to a motor-driven compressor including a compression unit, a motor unit driving the compression unit, and an inverter unit driving the motor unit. The inverter unit includes an inverter controlling the operation of the motor unit; a mounting unit providing a space for the inverter to be mounted on; an insulating resin which is coupled to the mounting unit to cover the inverter and having electric insulation; and a cover which is made of composite materials including a reinforcing agent to acquire the electric insulation and electromagnetic shielding capabilities.

Description

[0001] MOTOR-DRIVEN COMPRESSOR [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric compressor, and more particularly, to an electric compressor in which an inverter cover included in an electric compressor is formed of a composite material including a resin having electrical insulation and a reinforcing agent.

Recently, hybrid vehicles, electric vehicles, or fuel cell vehicles, which use both fossil fuel and electricity as the driving source, are attracting attention due to the low pollution and low fuel consumption policy due to exhaustion of fossil fuel and environmental pollution. ought.

Here, a hybrid vehicle, an electric vehicle, and a fuel cell vehicle obtain power for propelling the vehicle through an electric motor. Accordingly, unlike conventional mechanical air conditioning systems where mechanical compressors are widely used, the trend is toward using electric compressors.

2. Description of the Related Art Generally, an electric compressor has a function of compressing a refrigerant and includes a cylindrical housing having a suction port through which refrigerant flows and a discharge port through which compressed refrigerant is discharged, an electric motor for converting electric energy into mechanical energy, And an inverter for controlling the rotational speed of the electric motor, wherein the inverter is coupled to the outer surface of the housing and is electrically connected to the outside through a cable.

1 is an exploded perspective view showing a conventional electric compressor disclosed in Korean Patent Laid-Open Publication No. 10-2011-0072324 (Patent Document 1), and FIG. 2 is an assembled cross-sectional view of FIG.

1 and 2, the motor-driven compressor includes a compressor 32 including a fixed scroll 32a and an orbiting scroll 32b, a motor 31b including a rotor 31a and a stator 31b, (31), and an inverter unit (50) for controlling the motor unit (31).

The motor unit 31 transmits the power to rotate the orbiting scroll 32b of the compression unit 32 and the compression space 32b between the orbiting scroll 32b and the fixed scroll 32a in accordance with the rotation of the orbiting scroll 32b 33), the refrigerant is compressed

The inverter unit 50 supplies electric power to the motor unit 31 and controls the operation of the motor unit 31. [ The inverter unit 50 includes an inverter 60, a mounting portion 51 for providing a space for mounting the inverter 60, and a cover 52 covering the inverter 60 while being coupled to the mounting portion 51.

The inverter 60 includes a plurality of electrical components such as a transistor 63, a capacitor 64 and an inductor 65 and a printed circuit board (PCB) 61 on which an electronic device 62 such as a fixed resistor, a diode, And the cover 52 coupled to the mounting portion 51 prevents foreign matter from entering from the outside.

In recent years, there has been a growing demand for compact and lightweight compressors for improving the fuel efficiency of automobiles. For this purpose, inverter covers of conventional motor compressors have been manufactured using aluminum casting.

However, in this case, there is a problem that further processing is required to form an assembly surface or a bolt fastening hole or the like in the inverter cover.

Further, in order to keep the inside of the accommodating portion hermetically by the cover, a gasket has to be provided as a separate part in the assembling portion of the cover and the accommodating portion. In order to secure electrical insulation to the cover, There is a problem such that the number of parts is increased and an additional assembling process is accompanied.

Patent Document 1: Korean Patent Laid-Open No. 10-2011-0072324 (June 29, 2011)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the conventional art described above, and it is an object of the present invention to provide an inverter cover included in an electric compressor, which can be manufactured without involving additional processing for forming an assembly surface, And an inverter cover capable of securing the compressor cover.

An electric compressor according to an embodiment of the present invention is an electric compressor including a compression unit, a motor unit for driving the compression unit, and an inverter unit for operating the motor unit, wherein the inverter unit includes: an inverter for controlling driving of the motor unit; A mounting portion for providing a space in which the inverter is mounted; And a cover formed of a composite material, which is coupled to the mounting portion to cover the inverter, the composite material including an electrically insulating resin and a reinforcement agent.

In the motor-driven compressor according to the embodiment of the present invention, the resin may be a thermosetting resin or a thermoplastic resin.

In the motor-driven compressor according to the embodiment of the present invention, the reinforcing agent may be reinforcement including glass fiber or carbon fiber.

In the motor-driven compressor according to the embodiment of the present invention, the reinforcing agent may be an organic or inorganic filler.

In the motor-driven compressor according to the embodiment of the present invention, the composite material may further include an electromagnetic wave shielding material.

In the motor-driven compressor according to the embodiment of the present invention, the specific gravity of the composite material may be 1.4 to 2.0.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

According to the present invention, since the inverter cover is molded and manufactured using a resin having electrical insulation property, the cover itself has electrical insulation. Therefore, an insulating pad and the like are unnecessary, and the number of components is reduced.

Further, since the inverter cover can be manufactured by a method such as injection, press, etc., there is an advantage that a desired shape of the cover can be formed and manufactured more easily.

In addition, there is an advantage that the assembly surface of the cover to be assembled to the mounting portion and the fastening hole for engaging with the mounting portion are formed together at the time of molding the cover, so that no additional processing steps are required to process them.

In addition, since the inverter cover is made of a composite material containing a reinforcing agent with a resin as a base, it can have equivalent or better physical properties as a cover made of aluminum casting. In addition, since the composite material has better adhesion due to the characteristics of the composite material, the number of parts can be reduced by eliminating the need for a separate gasket.

Further, since the composite material serving as the material of the inverter cover has a small specific gravity, it can be made much lighter in weight than the cover made of an aluminum material, thereby providing an advantage that light weight of the motor-driven compressor can be realized.

Further, when the inverter cover is made of a material including an electromagnetic wave shielding material, the inverter unit having the electromagnetic wave shielding ability is provided without any additional process such as wrapping the cover with a metal plate or metal foil or surface treatment with a conductive material do.

1 is an exploded perspective view of a conventional electric compressor,
FIG. 2 is an assembled cross-sectional view of FIG. 1,
3 is a cross-sectional view of an electric compressor according to an embodiment of the present invention,
4 is a perspective view of the cover shown in Fig.

Hereinafter, an electric compressor according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a cross-sectional view of an electric compressor according to an embodiment of the present invention, and FIG. 4 is a perspective view of a cover shown in FIG.

3, the motor-driven compressor 100 according to an embodiment of the present invention includes a compressor 300, a motor unit 200 for driving the compressor 300, and a motor unit 200 The inverter unit 400 includes an inverter 410 for controlling the driving of the motor unit 200 and a mounting unit for providing a space for mounting the inverter 410 420 and a cover 430 formed of composite materials that are coupled to the mounting portion 420 to cover the inverter 410 and include an electrically insulating resin and a reinforcement agent do.

3, the motor unit 200 includes a stator 220 installed in the motor housings 211 and 212, and a stator 220 installed in the stator 220. The stator 220 includes a stator 220, And a rotor 230 for rotating the rotor.

The motor housing portions 211 and 212 are generally formed in a cylindrical shape as shown in FIG. In the illustrated example, the motor housing housings 211 and 212 constituted by the first housing 211 and the second housing 212, which are coupled to each other as an example of the motor housing housings 211 and 212, are shown. Here, the first housing 211 may be formed with a suction port 211 for sucking refrigerant through one side of the circumferential surface.

The stator 220 includes a stator core 221 that is fixedly mounted on the inner circumferential surface of the motor housing housings 211 and 212 as a kind of electromagnet by press fitting or the like, And a coil bundle 222 that is wound around the stator core 221.

The rotor 230 is rotatably driven by being mounted coaxially inside the stator 220 as described above and is rotatably inserted into the through hole at the center of the stator core 221 of the stator 220 A rotating shaft 231 disposed along the center axis and a permanent magnet 232 attached to the outer circumferential surface of the rotating shaft 231.

Accordingly, the rotor 230 is driven to rotate by the interaction with the stator 220 according to the driving principle of the motor when the stator 220 is energized, and the rotating shaft 231 is rotatably driven by the stator 220 mounted on the first housing 211 Is rotatably supported by the bearing (240), and rotates together with the rotor (230).

The compression unit 300 compresses the refrigerant by rotating by the rotational driving force generated by the motor unit 200. The compression unit 300 compresses the refrigerant compressed by the compression unit 300, 300 is disposed at the rear end of the rotation shaft 231 of the motor unit 200 as shown in FIG. 3 and receives the rotational force of the rotation shaft 231.

The compression unit 300 may be disposed at an inner rear end of the second housing 212 and may include an orbiting scroll 310 coupled to the rotary shaft 231 in a rotatable manner and a pair of the orbiting scroll 310 And a fixed scroll 320 for compressing the refrigerant. By the relative rotation of the orbiting scroll (310) with respect to the fixed scroll (320), the refrigerant flowing into the compression chamber (330) formed therebetween is compressed.

More specifically, the orbiting scroll 310 protrudes from the orbiting scroll wrap 311 curved in a spiral shape so as to converge toward the center. The revolving scroll 310 has its center portion connected to the rotation shaft 231 of the motor unit 200 by an eccentric bush 233 and rotated in synchronization with the rotor 230.

The fixed scroll 320 is fixed to the inner rear end of the second housing 212 and is fixed to the orbiting scroll wrap 311 of the orbiting scroll 310 by a fixed scroll wrap 321 curved in a spiral form, Are converged toward the center.

Accordingly, when the orbiting scroll 310 rotates, the mutually-aligned orbiting scroll 310 and the fixed scroll 320 are rotated in the motor portion 200 by the interaction of the respective laps 311 and 321, The refrigerant compressed at a high pressure is discharged to the discharge chamber 340 through a discharge port 322 formed through the fixed scroll 320. The refrigerant compressed at a high pressure is discharged to the discharge chamber 340 through the discharge port 322 formed through the fixed scroll 320. [ Here, the discharge chamber 340 may be a space formed by coupling the cover housing 350 to the rear end of the second housing 212. A discharge port 351 for discharging the compressed refrigerant to the outside may be formed at one side of the cover housing 350.

The refrigerant compressed in the compression chamber 330 is discharged to the discharge chamber 340 through the discharge port 322 and the high pressure refrigerant discharged to the discharge chamber 340 is discharged to the outside of the compressor 100 through the discharge port 351 Is supplied.

The motor housings 211 and 212 are divided into a first housing 211 and a second housing 212. The motor housings 211 and 212 and the cover housing 350 constitute the motor compressor housings 211 and 212, The outer shape of the body 100 is formed. However, this is merely one example, and the shape and specific structure of the housing constituting the outer shape of the motor-driven compressor 100 are not limited to the above-described examples and may be presented as various other examples.

The inverter unit 400 controls the operation of the motor unit 200 and is electrically connected to the stator 220 of the motor unit 200 to rotate the rotor 230 by removing the stator 220. [ And is driven or stopped.

The inverter unit 400 may include an inverter 410, a mounting unit 420, and a cover 430. The inverter 410 controls driving of the motor unit 200 and includes various electronic components 412 such as a plurality of electronic components mounted on a circuit board PCB 411 and a circuit board 411 .

The mounting portion 420 may be configured as a separate inverter housing in which the inverter 410 is received and mounted, for example, although not shown, in which the inverter 410 is mounted. In this case, And may be coupled to one side of the housings 211 and 212.

Alternatively, the mounting portion 420 may be one side of the motor housing 211, 212. For example, as shown in FIG. 3, the front portion 421 of the first housing 211 may provide a space in which the inverter 410 is mounted. At this time, a sidewall 422 protruding forward may be formed at the edge of the front portion 421 of the first housing 211 as being integrally formed with the first housing 211 as shown in the figure.

The cover 430 serves to prevent foreign matter from entering the inverter unit 400 from the outside.

As an example of the shape of the cover 430, an example of the shape including the flat plate portion 431 and the side wall portion 432 bent at the edge of the flat plate portion 431 is shown in Figs. 4A and 4B Is presented. The cover 430 may be formed with a plurality of fastening holes 433 spaced apart along the edge of the cover 430.

The cover 430 is coupled to the mounting portion 420 to cover the inverter 410. The mounting portion 420 may be a front portion 421 of the first housing 211, The side wall portion 432 constituting the cover 430 is attached to the side wall portion 422 of the first housing 211 through the mounting portion 422. In this case, The cover 430 and the mounting portion 420 may be coupled by being coupled to the side wall portion 422 of the cover 420 and the cover 430, respectively. At this time, the connection between the side wall portions 422 and 432 may be made by a fixing member (not shown) such as a bolt or the like fastened to the fastening hole 433 formed in the cover 430. However, the connection between the cover 430 and the mounting portion 420 is not limited to this example. The cover 430 may be coupled to the mounting portion 420 with various other coupling structures corresponding to the structure or shape of the mounting portion 420.

Meanwhile, the cover 430 included in the present embodiment is not made of aluminum casting like an inverter cover of a conventional motor-driven compressor, but is made of a composite material including a resin having electrical insulation properties and a reinforcement agent (Composite Materials). As a forming method, injection, press, etc. may be used.

Here, the resin is a thermosetting resin having electrical insulation such as phenolic resin, epoxy resin, polyester resin, urea resin, melamine resin and the like, Or a thermoplastic resin such as polypropylene (PP), polyethylene (PE), polystyrene (PS), polyphenylene sulfide (PPS), acrylonitrile-butadience-styrene (ABS)

The cover 430 has an advantage of being electrically insulated from the cover 430 itself, as compared with the case where the cover 430 is formed by aluminum casting. In the conventional motor-driven compressor, since the inverter cover is made of an aluminum material having electrical conductivity, a part such as an insulating pad is required in the inverter part. However, since the cover 430 itself has electric insulation property, .

In addition, the cover 430 is advantageous in terms of moldability. Since the shape of the cover 430 is formed by injection molding, press molding or the like, a desired shape can be formed more easily than in the case of aluminum casting. At this time, the assembly surface of the cover 430 to be assembled to the mounting portion 420 or the fastening hole 433 to be coupled to the mounting portion 420 is not formed by being processed after the cover 430 is formed, It is possible to solve the problem of manufacturing a conventional inverter cover accompanied by additional machining.

However, the cover 430 is made of a composite material including a resin and a reinforcing agent, not merely made of a resin, in order to improve physical properties (for example, strength, corrosion resistance, etc.) of the resin.

Here, the reinforcing agent may be a material that is included for enhancing the strength of the cover 430, for example, reinforcement or a filler.

The reinforcing material may include glass fiber or carbon fiber. The filler may be an inorganic filler including silica gel, calcium carbonate, titanium oxide, or the like, or may be an organic filler.

The cover 430 may be made of a composite material containing a reinforcing agent by using the resin as a matrix so as to have the same or better physical properties as the cover made of aluminum casting.

In addition, since the cover 430 has better adhesion as compared with the aluminum material due to the characteristics of the composite material, the cover 430 and the mounting portion 420 can be joined to each other without interposing a separate gasket. The inside of the inverter unit 400 can be kept sufficiently hermetic only by closely adhering and assembling the surfaces to be assembled.

The cover 430 made of such a composite material has the advantage of being much lighter in weight than the cover made of conventional aluminum casting. Aluminum has a specific gravity of 2.7, but the specific gravity of the material of the back cover 430 having a specific gravity of 1.18 to 1.23, for example, epoxy resin, and melamine resin of 1.45 to 1.52 is used as the base material used in manufacturing the cover 430 of this embodiment. . Accordingly, the above-mentioned composite material, which is the material of the cover 430, has a total specific gravity of 1.4 to 2.0, and the cover 430 made of such a composite material is much lighter in weight than the cover made of an aluminum material. Accordingly, the cover 430 included in the present embodiment greatly contributes to the reduction in weight of the motor-driven compressor 100.

On the other hand, the cover 430 included in the present embodiment may be made of a material that further includes an electromagnetic wave shielding material in the above-described composite material.

Electromagnetic waves (noise) generated in the inverter unit 400 may be discharged to the outside of the inverter unit 400 and may affect external electronic components, resulting in malfunction. In addition, malfunction of the inverter 410 may be caused by electromagnetic waves introduced from the outside.

Therefore, the cover 430 included in the present embodiment can prevent electromagnetic interference (EMS) or electromagnetic wave outflow (Electro Magnetic Susceptibility) by allowing the electromagnetic shielding material to be embedded in the cover 430 itself, Electromagnetic interference (EMI) (Electro Magnetic Compatibility (EMC)).

As a method of shielding the electromagnetic wave from the cover 430, a method may be used in which a conductive filler is included in the composite material as a molding material of the cover 430 to impart conductivity to the cover 430 itself. , Carbon-based fillers such as carbon black, natural or artificial graphite, PAN / pitch, and the like, which are made of metal, copper, nickel, aluminum, Or water-based emulsions composed of polyaniline, polypyrrole, polythiophene, etc., water-soluble or powder-type conductive high-molecular-weight fillers.

Shielding material is contained in the cover 430 included in the present embodiment so that the electromagnetic wave shielding ability can be obtained without any additional process such as wrapping the cover 430 with a separate metal plate or metal foil or surface treatment with a conductive material The inverter unit 400 can be provided.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious that the modification or the modification is possible by the person.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100; An electric compressor 200; The motor section
211; A first housing 212; The second housing
213; Suction port 220; Stator
221; Stator core 222; Coil bundle
230; A rotor 231; Rotating shaft
232; A permanent magnet 240; bearing
300; A compression unit 310; Turning scroll
311; Orbiting scroll wrap 320; Fixed scroll
321; Fixed scroll wrap 322; Outlet
330; Compression chamber 340; Discharge chamber
350; Cover housing 351; Discharge port
400; Inverter section 410; inverter
411; Circuit board 420; Mounting portion
421; Front portion 422; Side wall portion
430; A cover 431; Flat plate portion
432; Side wall portion 433; Fastening hole

Claims (6)

1. An electric compressor (100) comprising a compressor (300), a motor unit (200) for driving the compressor (300), and an inverter unit (400) for operating the motor unit
The inverter unit (400)
An inverter 410 for controlling the driving of the motor unit 200;
A mounting portion 420 for providing a space in which the inverter 410 is mounted; And
And a cover 430 formed of composite materials, which is coupled to the mounting portion 420 to cover the inverter 410 and includes a resin and a reinforcement having electrical insulation. Wherein the compressor is a compressor.
The method according to claim 1,
Wherein the resin is a thermosetting resin or a thermoplastic resin.
The method according to claim 1,
Wherein the reinforcing agent is reinforcement including glass fiber or carbon fiber.
The method according to claim 1,
Wherein the reinforcing agent is an organic or inorganic filler.
The method according to claim 1,
Wherein the composite material further comprises an electromagnetic wave shielding material.
The method according to claim 1,
Wherein the composite material has a specific gravity of 1.4 to 2.0.
KR1020130015642A 2013-02-14 2013-02-14 Motor-driven compressor KR20140102413A (en)

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KR1020130015642A KR20140102413A (en) 2013-02-14 2013-02-14 Motor-driven compressor

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Application Number Priority Date Filing Date Title
KR1020130015642A KR20140102413A (en) 2013-02-14 2013-02-14 Motor-driven compressor

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102031850B1 (en) * 2018-04-13 2019-10-14 엘지전자 주식회사 Motor operated compressor
US10826412B2 (en) 2017-06-29 2020-11-03 Hanon Systems Method for controlling power semiconductors in an inverter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100099860A (en) * 2009-03-04 2010-09-15 학교법인 두원학원 Electromotive compressor having inverter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100099860A (en) * 2009-03-04 2010-09-15 학교법인 두원학원 Electromotive compressor having inverter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
일본 특허공보 특허 제 4372479호(2009.11.25.) 1부. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10826412B2 (en) 2017-06-29 2020-11-03 Hanon Systems Method for controlling power semiconductors in an inverter
KR102031850B1 (en) * 2018-04-13 2019-10-14 엘지전자 주식회사 Motor operated compressor

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