Electric compressor with integrated sensor(s)

Patent metadata

Field	Value
Publication number	US-12510074-B2
Application number	US-202318338335-A
Country	US
Kind code	B2
Filing date	Jun 20, 2023
Priority date	Jun 20, 2023
Publication date	Dec 30, 2025
Grant date	Dec 30, 2025

Abstract

An electric compressor includes a housing, refrigerant inlet port, a refrigerant outlet port, an inverter section, a motor section, a compression device and a front cover. The housing defines an intake volume and a discharge volume. The refrigerant inlet port is coupled to the housing and is configured to introduce the refrigerant to the intake volume. The compression device is a scroll-type compression device configured to compress the refrigerant. The refrigerant outlet port is coupled to the housing and is configured to allow compressed refrigerant to exit the scroll-type electric compressor from the discharge volume. The electric compressor includes integral pressure(s) and/or temperatures sensor(s).

First claim

What is claimed is:

1 . A scroll-type electric compressor configured to compress a refrigerant, comprising:
a housing defining an intake volume, a discharge volume and an inverter cavity, the housing having a generally cylindrical shape and having a central axis; an inverter module mounted inside the inverter cavity of the housing and adapted to convert direct current electrical power to alternating current electrical power; a motor mounted inside the housing; a compression device, coupled to the motor, for receiving the refrigerant from the intake volume and compressing the refrigerant as the motor is rotated; an internal housing partition separating the intake volume and the inverter cavity, the internal housing partition including a passage therethrough for receiving refrigerant from the intake volume, the passage having an intake volume end and an inverter cavity end, the intake volume end being open to the intake volume; a pressure sensor positioned within the inverter cavity adjacent the inverter cavity end of the passage for sensing a pressure associated with the refrigerant within the passage and the intake volume; and, a sealing device adjacent the inverter cavity end of the passage configured to seal the intake volume from the inverter cavity.

2 . The scroll-type electric compressor, as set forth in claim 1 , the housing includes an inverter housing and an inverter back cover, the inverter housing and the inverter back cover defining the inverter cavity, the inverter module includes a printed circuit board, wherein the pressure sensor is mounted to the printed circuit board.

3 . The scroll-type electric compressor, as set forth in claim 2 , further comprising a holder, wherein the inverter housing includes a holder aperture for receiving the holder, wherein the holder defines at least a portion of the internal housing partition, the passage being located within the holder.

4 . The scroll-type electric compressor, as set forth in claim 3 , further comprising a temperature sensor positioned within the intake volume and being coupled to the printed circuit board by a plurality of wires.

5 . The scroll-type electric compressor, as set forth in claim 4 , wherein the holder includes at least one aperture for receiving the plurality of wires.

6 . The scroll-type electric compressor as set forth in claim 2 , wherein the internal housing partition is formed by the inverter housing.

7 . The scroll-type compressor, as set forth in claim 6 , wherein the inverter housing includes a raised housing feature extending from, and being integral with, the inverter housing, the raised housing feature forming the internal housing partition.

8 . The scroll-type compressor, as set forth in claim 7 , the passage being located within the raised housing feature and extending from a lower surface of the inverter housing.

9 . The scroll-type compressor, as set forth in claim 8 , the raised housing feature including an upper surface adjacent to, and in contact with a package.

10 . The scroll-type compressor, as set forth in claim 9 , including a sealing device device configured to seal a junction between the upper surface and the package.

11 . The scroll-type compressor, as set forth in claim 10 , wherein the sealing device includes an O-ring and/or adhesive.

12 . The scroll-type electric compressor, as set forth in claim 1 , further comprising a temperature sensor positioned within the intake volume and being coupled to a printed circuit board by a plurality of wires.

13 . The scroll-type electric compressor, as set forth in claim 12 , wherein the internal housing partition includes at least one aperture for receiving the plurality of wires.

14 . The scroll-type electric compressor, as set forth in claim 1 , the housing defining a second passage therethrough for receiving pressurized refrigerant from the discharge volume, the second passage having a discharge volume end and an inverter cavity end, the scroll-type electric compressor further comprising a second pressure sensor positioned within the inverter cavity adjacent the inverter cavity end of the second passage for sensing a pressure associated with the refrigerant within the second passage.

15 . The scroll-type electric compressor, as set forth in claim 14 , wherein the second passage is within a rib positioned along an outer surface of the housing.

16 . The scroll-type electric compressor, as set forth in claim 15 , further comprising a temperature sensor positioned within the discharge volume and being coupled to a printed circuit board by a plurality of wires.

17 . The scroll-type electric compressor, as set forth in claim 16 , wherein the plurality of wires is routed through the second passage.

18 . The scroll-type electric compressor, as set forth in claim 1 , further comprising a pressure sensor module including:
a pressure sensor module housing having a pressure sensor cavity, the pressure sensor module including a pressure sensor module printed circuit board electrically coupled to a printed circuit board and being located within the pressure sensor cavity; the pressure sensor mounted to the pressure sensor module printed circuit board and being positioned within the pressure sensor cavity adjacent the inverter cavity end of the passage for sensing a pressure associated with the refrigerant within the passage.

19 . The scroll-type electric compressor, as set forth in claim 18 , wherein the pressure sensor module includes at least one aperture for receiving the plurality of wires.

20 . The scroll-type electrical compressor, as set forth in claim 18 , further comprising an inverter housing including a pressure sensor module aperture, the pressure sensor module positioned with the pressure sensor cavity and including an intake volume side wall defining at least a portion of the internal housing partition, the passage being located within the intake volume side wall.

21 . The scroll-type electrical compressor, as set forth in claim 20 , wherein the inverter housing includes a slot located around a periphery of the pressure sensor module aperture for receiving a retainer configured to retain the pressure sensor module with the pressure sensor module aperture.

22 . The scroll-type electric compressor, as set forth in claim 21 , wherein the pressure sensor module includes a temperature sensor coupled to the pressure module printed circuit board by a plurality of wires, the temperature sensor being located within the intake volume when the scroll-type electrical compressor is assembled.

23 . The scroll-type electric compressor, as set forth in claim 20 , wherein the internal housing partition is formed by the inverter housing.

24 . The scroll-type electric compressor, as set forth in claim 18 , wherein the housing includes an inverter housing and an inverter back cover, the inverter housing and the inverter back cover defining the inverter cavity, the inverter module includes a printed circuit board, wherein the pressure sensor module printed circuit board is electrically coupled to the printed circuit board.

25 . The scroll-type electrical compressor, as set forth in claim 24 , wherein the inverter housing includes a pressure sensor module aperture for receiving the pressure sensor module, wherein the inverter housing includes a slot located around a periphery of the pressure sensor module aperture for receiving a retainer configure

Assignees

• Mahle Int Gmbh

Inventors

• Covel Christopher
• Bowman Brett
• Hammond Jonathan
• Haseley Brent

Classifications

• F04C2270/44

  Conditions at the outlet of a pump or machine · CPC title

• F04C2240/808

  Electronic circuits (e.g. inverters) installed inside the machine · CPC title

• F04C2240/803

  Electric connectors or cables; Fittings therefor · CPC title

• F04C2270/605

  Controlled or regulated · CPC title

• F04C2270/42

  Conditions at the inlet of a pump or machine · CPC title