ELECTRIC COMPRESSOR

• US 20190309740A1
• Filed: 11/01/2017
• Published: 10/10/2019
• Est. Priority Date: 11/11/2016
• Status: Active Grant

• Current Assignee: Mitsubishi Heavy Industries Thermal Systems, Ltd. (Mitsubishi Heavy Industries, Ltd.)
• Original Assignee: Mitsubishi Heavy Industries Thermal Systems, Ltd. (Mitsubishi Heavy Industries, Ltd.)
• Inventors: HATTORI, Makoto, KAMITANI, Hiroyuki, HIGUCHI, Hiroto, TAKASHIGE, Takayuki
• Granted Patent: US 11,585,332 B2
• Time in Patent Office: Days
• CPC Class Codes: F04B 35/04 the means being electric
• CPC Class Codes: F04B 39/12 Casings; Cylinders; Cylinder heads; Fluid connections
• CPC Class Codes: F04B 39/14 Provisions for readily assembling or disassembling
• CPC Class Codes: F04C 2240/808 Electronic circuits (e.g. inverters) installed inside the machine
• CPC Class Codes: F04C 23/008 Hermetic pumps
• CPC Class Codes: H02K 11/33 Drive circuits, e.g. power electronics H02K11/38 takes precedence
• CPC Class Codes: H05K 1/0263 High current adaptations, e.g. printed high current conductors or using auxiliary non-printed means; Fine and coarse circuit patterns on one circuit board H05K1/0293 takes precedence
• CPC Class Codes: H05K 2201/10166 Transistor
• CPC Class Codes: H05K 2201/10424 Frame holders
• CPC Class Codes: H05K 3/306 Lead-in-hole components, e.g. affixing or retention before soldering, spacing means H05K3/32 takes precedence
• CPC Class Codes: H05K 3/3447 Lead-in-hole components H05K3/3415 takes precedence

Abstract

An electric compressor includes: a circuit board on which a plurality of switching elements (33) are mounted; a compression mechanism which is driven by a motor operated using AC power output from the switching elements (33); and a lead holding member (50) disposed between element main bodies (33a) of the switching elements (33) and the circuit board. The circuit board includes a plurality of through-holes through which a plurality of leads (33b) that extend from the element main bodies (33a) can be respectively inserted. The lead holding member (50) includes lead insertion holes (53) through which the leads (33b) can be inserted such that positions of the leads (33b) is held at positions that correspond to positions of the through-holes.

Claims

1. An electric compressor comprising:

a circuit board on which a plurality of switching elements that are configured to convert DC power supplied from an outside into AC power are mounted;

a motor rotationally driven by the AC power output from the plurality of switching elements;

a compression mechanism which is driven by the motor and is configured to compress a fluid; and

a lead holding member disposed between element main bodies of the plurality of switching elements and the circuit board,

wherein the circuit board includes a plurality of through-holes through which a plurality of leads that extend from the element main bodies are respectively inserted, and

wherein the lead holding member includes lead insertion holes through which the plurality of leads are inserted such that positions of the plurality of leads are held at positions that correspond to positions of the through-holes.

2. The electric compressor according to claim 1,

wherein the lead insertion hole is tapered such that an inner diameter gradually decreases from one of the element main bodies side toward the circuit board side.

3. The electric compressor according to claim 1, further comprising:

a casing in which a driving circuit accommodation portion that accommodates the circuit board and the lead holding member is formed,

wherein the lead holding member is provided to cover at least a part of the element main bodies from the plurality of leads side with respect to the plurality of switching elements in a state of being fixed to the casing in the driving circuit accommodation portion.

4. The electric compressor according to claim 3,

wherein the element main bodies are fixed to the casing by fixing screws, and

wherein the lead holding member covers only a part of the element main bodies so as to expose the fixing screws.

5. The electric compressor according to claim 3,

wherein the element main bodies are fixed to the casing by fixing screws, and

wherein the lead holding member has opening portions at positions that correspond to the fixing screws.

6. The electric compressor according to claim 1, further comprising:

a motor connection member that electrically connects the motor and the circuit board to each other as a first end portion is connected to the motor and a second end portion is connected to the circuit board,

wherein the lead holding member includes a connection member holding portion that holds the motor connection member so as to hold a position of the second end portion at a position that corresponds to a connection position with the circuit board.