Varnish injector assembly with varnish flow feature

Patent metadata

Field	Value
Publication number	US-2024131551-A1
Application number	US-202217969332-A
Country	US
Kind code	A1
Filing date	Oct 19, 2022
Priority date	Oct 19, 2022
Publication date	Apr 25, 2024
Grant date	—

Abstract

A varnish injector assembly for an electric motor includes an injector nozzle, a varnish reservoir fluidly connected to the injector nozzle, and a filament extending from the varnish reservoir. The filament is configured to direct varnish from the injector nozzle to a slot of a stator core.

First claim

What is claimed is:

1 . A varnish injector assembly for an electric motor, the assembly comprising:
an injector nozzle; a varnish reservoir fluidly connected to the injector nozzle; and a filament extending from the varnish reservoir, wherein the filament is configured to direct varnish from the injector nozzle to a slot of a stator core.

2 . The assembly of claim 1 , further comprising an applicator disposed at an end of the filament, the applicator configured to direct the varnish from the filament into the slot of the stator core.

3 . The assembly of claim 1 , wherein the filament is metal.

4 . The assembly of claim 1 , wherein the varnish reservoir receives the varnish from the injector nozzle.

5 . The assembly of claim 1 , wherein the varnish reservoir supplies the varnish to the injector nozzle.

6 . The assembly of claim 5 , wherein the filament extends from the varnish reservoir through the injector nozzle.

7 . The assembly of claim 1 , further comprising a support securing the filament in the varnish reservoir.

8 . The assembly of claim 7 , wherein the support includes a plurality of rigid legs extending beyond a diameter of an outlet of the varnish reservoir.

9 . The assembly of claim 7 , wherein the support extends beyond a diameter of the injector nozzle.

10 . The assembly of claim 7 , wherein the support is fixed to the varnish reservoir.

11 . The assembly of claim 1 , wherein the filament is disposed above a wire disposed in the slot of the stator core.

12 . The assembly of claim 11 , further comprising an applicator disposed at an end of the filament, the applicator contacting the wire.

13 . The assembly of claim 12 , wherein the applicator is a fiber brush.

14 . The assembly of claim 1 , wherein the filament extends along a direction of gravity, and varnish from the varnish reservoir flows along the filament along the direction of gravity.

15 . A varnish application system, the system comprising:
a stator core of an electric motor, the stator core defining a slot and comprising a wire disposed in the slot; a varnish injector disposed above the slot; and a filament extending through the varnish injector to the slot, wherein the varnish injector is configured to provide varnish to the wire via the filament.

16 . The system of claim 15 , further comprising a support securing the filament in a varnish reservoir.

17 . The system of claim 15 , further comprising an applicator disposed on an end of the filament, the applicator contacting the wire.

18 . The system of claim 15 , wherein the varnish injector includes a varnish reservoir fixed to an injector nozzle.

19 . The system of claim 18 , wherein the filament is disposed in the varnish reservoir.

20 . The system of claim 19 , wherein the filament extends from the varnish reservoir through the injector nozzle.

Assignees

• Ford Global Tech Llc

Inventors

• Zhang Xiaogang

Classifications

• H02K15/021

  Magnetic cores · CPC title

• B05C1/027

  only at particular parts of the articles (at particular parts of work of indefinite length B05C1/16) · CPC title

• B05C1/02

  for applying liquid or other fluent material to separate articles {(B05C1/006 takes precedence)} · CPC title

• B05C7/06

  by devices moving in contact with the work · CPC title

• B05C7/005 Primary

  by devices in contact with moving work · CPC title