Capacitor with multiple elements for multiple replacement applications

• US 9,378,893 B2
• Filed: 09/29/2014
• Issued: 06/28/2016
• Est. Priority Date: 04/07/2005
• Status: Active Grant

• Current Assignee: AmRad Manufacturing, LLC
• Original Assignee: American Radionic Company Incorporated
• Inventors: Stockman, Robert M.
• Primary Examiner(s): Ha, Nguyen T
• Application Number:
  US14/499,747
• Publication Number:
  US 20150016012A1
• Time in Patent Office: 638 Days
• Field of Search: 361/301.5, 361/301.1, 361502-504, 361509-512
• US Class Current: 1/1
• CPC Class Codes: H01G 2/24 Distinguishing marks, e.g. colour coding
• CPC Class Codes: H01G 4/228 Terminals
• CPC Class Codes: H01G 4/232 electrically connecting two or more layers of a stacked or rolled capacitor
• CPC Class Codes: H01G 4/236 leading through the housing, i.e. lead-through
• CPC Class Codes: H01G 4/32 Wound capacitors
• CPC Class Codes: H01G 4/38 Multiple capacitors, i.e. structural combinations of fixed capacitors
• CPC Class Codes: H01G 4/385 Single unit multiple capacitors, e.g. dual capacitor in one coil
• CPC Class Codes: H01G 5/01 Details
• CPC Class Codes: H01G 5/011 Electrodes
• CPC Class Codes: H01G 5/014 Housing; Encapsulation
• CPC Class Codes: H01G 5/38 Multiple capacitors, e.g. ganged

Abstract

A capacitor provides a plurality of selectable capacitance values, by selective connection of six capacitor sections of a capacitive element each having a capacitance value. The capacitor sections are provided in a plurality of wound cylindrical capacitive elements. Two vertically stacked wound cylindrical capacitance elements may each provide three capacitor sections. There may be six separately wound cylindrical capacitive elements each providing a capacitor section. The capacitor sections have a common element terminal.

Claims

1. A multi-rated capacitor suitable for use with a fan motor and a compressor motor in an air-conditioning system and configured to provide a plurality of selectable capacitance values, comprising:

six capacitive devices housed in a case, wherein each capacitive device has a dielectric that is comprised of metalized film, each independently provides at least one capacitance value between about 2.5 to 25.0 microfarads, and each capacitive device has a first capacitor terminal and a second capacitor terminal;

a cover assembly comprising;

a deformable cover mountable to the case,

six capacitor cover terminals, each corresponding to one of the capacitive devices and each having at least one contact extending from the deformable cover, wherein the deformable cover is configured to displace at least one of the six capacitor cover terminals upon an operative failure of at least one of the six capacitive devices, and

six insulators, wherein each is configured to provide insulation for at least one of the six cover terminals; and

six conductors, wherein each is configured to electrically connect one capacitor cover terminal to its corresponding capacitive device,

wherein at least one of the capacitive devices is operable to be and remain coupled to the fan motor during operation of the air-conditioning system and wherein at least another of the capacitive devices is operable to be and remain coupled to the compressor motor during operation of the air-conditioning system.

2. The multi-rated capacitor of claim 1, wherein the six capacitive devices correspond to six capacitor sections of a single wound capacitive element.

3. The multi-rated capacitor of claim 1, wherein the six capacitive devices are each separately wound.

4. The multi-rated capacitor of claim 1, wherein the combined capacitance value of the six capacitive devices is greater than about 55.0 microfarads.

5. The multi-rated capacitor of claim 1, wherein the combined capacitance value of the six capacitive devices is greater than about 65.0 microfarads.

6. The multi-rated capacitor of claim 1, wherein four capacitive devices have a combined capacitance value greater than about 55.0 microfarads and the remainder of the capacitive devices have a combined capacitance value greater than about 6.0 microfarads.

7. The multi-rated capacitor of claim 1, wherein the metalized film is a metalized polymer film.