US1576096A - Electric condenser - Google Patents

Electric condenser Download PDF

Info

Publication number
US1576096A
US1576096A US708248A US70824824A US1576096A US 1576096 A US1576096 A US 1576096A US 708248 A US708248 A US 708248A US 70824824 A US70824824 A US 70824824A US 1576096 A US1576096 A US 1576096A
Authority
US
United States
Prior art keywords
dielectric
condenser
oil
layers
condensers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US708248A
Inventor
Wheeler P Davey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Priority to US708248A priority Critical patent/US1576096A/en
Application granted granted Critical
Publication of US1576096A publication Critical patent/US1576096A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00Fixed capacitors; Processes of their manufacture
    • H01G4/002Details
    • H01G4/018Dielectrics
    • H01G4/20Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06
    • H01G4/22Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06 impregnated
    • H01G4/221Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06 impregnated characterised by the composition of the impregnant

Definitions

  • -My invention relates to electrical-condensers and particularly to the dielectric thereof.
  • Static condensers heretofore constructed using a dielectric comprising paper impregnated with a mineral oil "have been found to require very careful-handling especially during the process of impregnation in order that the finished product could be re,- lied upon to withstand its rated voltage Without breakdown. Because of the exacting. requirements incident to the materials employed, the manufacture of static condensers upon a large scale has been attended with many difficulties.
  • An object of my invention is to provide an improved dielectric for such condensers which will reduce or obviate the ditficulties heretofore encountered and in general greatly facilitates the successful manufacture of condensers.
  • the single figure of the drawin is a diagrammatic representation of a s-atic condenser involving my invention.
  • non-conducting layer which, for example, may be cellulose containing a compound of the unsaturated fatty acids, as for example a glyceride represented by lin- .seed oil,
  • the oil acts as though it imprisoned the residual water'in the paper so that it is unable to affect the conductivity of the insulator as a whole.
  • a condenser having a dielectric involving my invention may be built up of alternate layers of conductor and dielectric in the usual manner either by piling up the layers to form a stack or by rolling up continuous strips of thesame.
  • the dielectric layers which may be .paper are preferably allowed to remain somewhat loose better to enable air and moisture therein to be withdrawn and the pile orroll thus formed may then be subjected to treatment in a vacuum tank. While subjected to the vacuum and preferably at an elevated temperature the impregnating oil may be admitted to the tank and the pressure restored.
  • the condenser elements may then be securely clamped together and immersed in a permanent receptacle containing the impregnating or other suitable oil.
  • the conducting layers 1 of one polarity are shown spaced from the conducting layers 2 of the opposite polarity by layers of dielectric 3 which in accordance with my invention contains or is impregnated with linseed oil or other compound of the unsaturatedfatty acids.
  • the whole is shown immersed in a receptacle 4 containing an insulating liquid which preferably is the same as that comprised in the dielectric.
  • a condenser comprising a plurality of conducting layers and spacing of solid ma- 'terial therebetween containing a compound of the unsaturated fatty acids.
  • a condenser comprising a plurality of conducting layers and spacing of solid material therebetween containing a glyceride of the unsaturated fatty acids
  • a condenser comprising a plurality of conducting layers and a dielectric therebetween comprising a solid non-conducting material impregnated with a glyceride of the unsaturated fatty acids.
  • a condenser comprising a plurality of conducting layers separated from each other by layers of solid cellulose material impregnated with a glyceride of the unsaturated fatty acids. 7
  • a condenser comprising a series of conducting layers, and a series of dielectric layers alternating with said conducting layers,- said dielectric layers comprising sheets ;of paper impregnated with linseed oil.
  • LA condenser comprising spaced conducting elements and a solid dielectric therebetween impregnated with linseed oil.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Organic Insulating Materials (AREA)

Description

Mar ch 9 192s.
1,576,096 W. P. DAVEY ELECTRIC CONDENSER Filed April 22, 1924 /m ore:g/7al'ed with linseed oil or other compound off/1e 4 unsaturated fatty acids.
Inventor- WheeLer p. D'cLv y HLs Attorne y ments have shown that the impregnating" Patented Mar. 9, 1926.
UNITED STATES PATENT OFFICE.
WHEELER R DAVEY, OF SCHENECTADY, NEW YORK, ASSIGNOR TO GENERAL ELEC- TRIC COMPANY, A CORPORATION OF NEW YORK.
ELECTRIC CONDENSER.
Application filed April 22, 1924. Serial No. 108,248.
To all whom/it may concern."
Be it known that 1, WHEELER P. DAVEY, a citizen of the United States, residing at Schenectady, county of Schenectady, State of New York, have invented certain new and useful Improvements in Electric Condensers, of which the following is a specification.
-My invention relates to electrical-condensers and particularly to the dielectric thereof. Static condensers heretofore constructed using a dielectric comprising paper impregnated with a mineral oil "have been found to require very careful-handling especially during the process of impregnation in order that the finished product could be re,- lied upon to withstand its rated voltage Without breakdown. Because of the exacting. requirements incident to the materials employed, the manufacture of static condensers upon a large scale has been attended with many difficulties.
' An object of my invention is to provide an improved dielectric for such condensers which will reduce or obviate the ditficulties heretofore encountered and in general greatly facilitates the successful manufacture of condensers. r
The single figure of the drawin is a diagrammatic representation of a s-atic condenser involving my invention.
In accordance with my invention I employ as the dielectric or plate spacing elementa non-conducting layer which, for example, may be cellulose containing a compound of the unsaturated fatty acids, as for example a glyceride represented by lin- .seed oil,
have obtained excellent results using as the dielectric several layers of a ood quality of bond paper of about onealf .mil. in thickness which were afterward impregnated with purified linseed oil. Experiinaterial for ood results should be in a'comparatively high state of purification and I have found purified oils such as mentioned Y above to exhibit characteristicswhich make them especially desirable for use as dielectric. materlal for condensers. For instance, the conductivity of a sample of purified and dried linseed oil was found to be of the same order of magnitude as that of the best mineral oil, and its dielectric constant to be about %higher than that of mineral oil,
China wood oil or castor oil, I.
erty is believed to account in a large measure for the superior results obtained with such substances'over those which do not spread on water. It is a fact well known to those skilled in the art that paper such as that used in the manufacture of condensers, cables, and the like is only with difficulty freed from the last traces ofwater. Whensuch paper istreated with a water spreading oil,
the oil acts as though it imprisoned the residual water'in the paper so that it is unable to affect the conductivity of the insulator as a whole.
The above-mentioned water. spreading property is not confined to the glycerides of the fatty acids as this property is possessed also by the various soaps of the fatty acids.
The water spreading properties of soaps of the alkali metals are already well known.
Recent experiments have shown that this effect is not limited to the so-tc-alled water soluble soaps, for copper ole'ate will spread on water to a film substantially one molecule thick.
Mention was made above of the necessity ofusing oils in a purified state, the removal of water from the oil being of primary importance. It is well known that animal and vegetable oils may be purified by chemical treatment and that colloidal'matter may be.
removed by filtering through such clarifying materials as fullers earth, filtering carbon, etc, and that they may be furtheE refined and dried by suitable heat treatment.
A condenser having a dielectric involving my invention may be built up of alternate layers of conductor and dielectric in the usual manner either by piling up the layers to form a stack or by rolling up continuous strips of thesame. The dielectric layers which may be .paper are preferably allowed to remain somewhat loose better to enable air and moisture therein to be withdrawn and the pile orroll thus formed may then be subjected to treatment in a vacuum tank. While subjected to the vacuum and preferably at an elevated temperature the impregnating oil may be admitted to the tank and the pressure restored. The condenser elements may then be securely clamped together and immersed in a permanent receptacle containing the impregnating or other suitable oil.
Referring to the drawing, which is purely diagrammatic in character, the conducting layers 1 of one polarity are shown spaced from the conducting layers 2 of the opposite polarity by layers of dielectric 3 which in accordance with my invention contains or is impregnated with linseed oil or other compound of the unsaturatedfatty acids. The whole is shown immersed in a receptacle 4 containing an insulating liquid which preferably is the same as that comprised in the dielectric.
What I claim as new and desire to secure by Letters Patent of the United States, is, 1. A condenser comprising a plurality of conducting layers and spacing of solid ma- 'terial therebetween containing a compound of the unsaturated fatty acids.
2. A condenser comprising a plurality of conducting layers and spacing of solid material therebetween containing a glyceride of the unsaturated fatty acids;
3. A condenser comprising a plurality of conducting layers and a dielectric therebetween comprising a solid non-conducting material impregnated with a glyceride of the unsaturated fatty acids.
4. A condenser comprising a plurality of conducting layers separated from each other by layers of solid cellulose material impregnated with a glyceride of the unsaturated fatty acids. 7
5. A condenser comprising a series of conducting layers, and a series of dielectric layers alternating with said conducting layers,- said dielectric layers comprising sheets ;of paper impregnated with linseed oil.
6. LA condenser comprising spaced conducting elements and a solid dielectric therebetween impregnated with linseed oil.
In witness whereof,-I have hereunto set my hand this 21st day of April, 1924.
'WHEELER P. DAVEY.
US708248A 1924-04-22 1924-04-22 Electric condenser Expired - Lifetime US1576096A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US708248A US1576096A (en) 1924-04-22 1924-04-22 Electric condenser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US708248A US1576096A (en) 1924-04-22 1924-04-22 Electric condenser

Publications (1)

Publication Number Publication Date
US1576096A true US1576096A (en) 1926-03-09

Family

ID=24845005

Family Applications (1)

Application Number Title Priority Date Filing Date
US708248A Expired - Lifetime US1576096A (en) 1924-04-22 1924-04-22 Electric condenser

Country Status (1)

Country Link
US (1) US1576096A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2418820A (en) * 1942-07-07 1947-04-15 Aerovox Corp Art of dielectrics
US4306273A (en) * 1977-08-23 1981-12-15 Robert Bosch Gmbh Capacitors
US4878150A (en) * 1987-02-20 1989-10-31 Colgate-Palmolive Co. Polarizable material having a liquid crystal microstructure and electrical components produced therefrom
US5038249A (en) * 1987-02-20 1991-08-06 Colgate-Palmolive Co. Nonisotropic solution polarizable material and electrical components produced therefrom
US5206797A (en) * 1987-02-20 1993-04-27 Colgate-Palmolive Company Nonisotropic solution polarizable material and electrical components produced therefrom

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2418820A (en) * 1942-07-07 1947-04-15 Aerovox Corp Art of dielectrics
US4306273A (en) * 1977-08-23 1981-12-15 Robert Bosch Gmbh Capacitors
US4878150A (en) * 1987-02-20 1989-10-31 Colgate-Palmolive Co. Polarizable material having a liquid crystal microstructure and electrical components produced therefrom
US4974118A (en) * 1987-02-20 1990-11-27 Colgate-Palmolive Company Nonisotropic solution polarizable material and electrical components produced therefrom
US5038249A (en) * 1987-02-20 1991-08-06 Colgate-Palmolive Co. Nonisotropic solution polarizable material and electrical components produced therefrom
US5206797A (en) * 1987-02-20 1993-04-27 Colgate-Palmolive Company Nonisotropic solution polarizable material and electrical components produced therefrom

Similar Documents

Publication Publication Date Title
US1576096A (en) Electric condenser
US1947112A (en) Electric condenser
DE2949477A1 (en) CONDENSER WITH AN ESTER AS A DIELECTRIC LIQUID
US1776309A (en) Oil-insulated electrical device
CH619068A5 (en) Liquid dielectric impregnant for electrical appliances.
DE2364127A1 (en) OIL-IMPREGNATED CAPACITOR
EP0172537B1 (en) New electrical insulating oil and oil-filled electrical appliances
US2039837A (en) Insulating and dielectric material for electrical apparatus
KR910008567B1 (en) New compositions its application as an electrical insulator and process for its manufacture
DE2302679A1 (en) TAPE OR SHEET INSULATING MATERIAL
DE3041049C2 (en) Electrical device with a dielectric impregnated with insulating oil
US1989046A (en) Electrical condenser
DE976509C (en) Self-healing electrical capacitor
JPS6110925B2 (en)
US1351074A (en) Condenser
GB1428746A (en) Dielectric fluids
DE1640185A1 (en) Use of poly (2,6-dimethyl-p-phenylene ether) as dielectrics
US1921086A (en) Electric condenser
US2391687A (en) Stabilization of electric condensers
US1803166A (en) Electric condenser
DE2310807A1 (en) CAPACITORS AND SUITABLE DIELECTRIC MATERIALS
DE933402C (en) Electrical capacitor with coverings that are separated from one another by a plurality of dielectric layers
DE2507957A1 (en) ELECTRICAL DEVICE WITH AT LEAST TWO ELECTRODES AND ONE DIELECTRIC MATERIAL
US1112397A (en) Condenser.
DE549120C (en) An electrical capacitor, the insulating layer of which is made using a dielectric with a high dielectric constant