Electric compressor

By attaching the hermetic plate to the inverter accommodation portion side with individual insulators and a reduced seal material, the electric compressor addresses deformation and leakage issues, improving sealability and insulation.

US20260139674A1Pending Publication Date: 2026-05-21SANDEN CORP
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
SANDEN CORP
Filing Date
2023-09-28
Publication Date
2026-05-21

AI Technical Summary

Technical Problem

The existing design of attaching a hermetic plate to a partition wall on the motor chamber side in electric compressors leads to overpacking, deformation, and increased refrigerant leakage due to the large pressure receiving area and size of the seal material around hermetic pins, especially when using an integrated insulator.

Method used

The hermetic plate is attached to the partition wall on the inverter accommodation portion side, with individual insulators around each hermetic pin, and a seal material interposed between the hermetic plate and the partition wall to surround the pins and penetration holes, reducing the seal material's size and pressure receiving area.

Benefits of technology

This configuration reduces deformation of the hermetic plate, minimizes refrigerant leakage, and enhances sealability and insulating properties by locating the seal material closer to the inside and applying insulating resin and silicon member to improve insulation and sealing.

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    Figure US20260139674A1-D00000_ABST
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Abstract

Provided is an electric compressor with improved sealability when a hermetic plate is attached to a partition wall on an inverter accommodation portion side. In a state in which a hermetic plate 52 is attached to an end wall 7A (partition wall), a hermetic pin 53 passes through a penetration hole 73 formed in the end wall 7A (partition wall) and is provided from an inverter accommodation portion 13 to a motor chamber 12, an insulator 66 is individually attached to the periphery of each hermetic pin 53 on the motor chamber 12 side, and a seal material 76 is interposed between the hermetic plate 52 and the end wall 7A (partition wall) so as to surround the plurality of hermetic pins 53 and the penetration holes 73.
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