Patent US3804154A successfully refreshed from Google Patents.
US3804154A
Expired / Lapsed
US
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Heating systems and heater units therefore
Assignee: Churchill Instrument Co Ltd
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Filing: 1971-12-20
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Granted: 1974-04-16
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Expires: 1991-12-20
Abstract
Abstract An oil heater unit which comprises a chamber through which oil is intended to flow; a closed vessel mounted in a wall of the chamber, the vessel having a first portion situated inside the chamber and a second portion situated outside the chamber and being so arranged that material contained in the vessel can flow from the first portion to the second portion; a heater device for heating the second portion of the vessel; and wherein the vessel contains a heat transfer material which is adapted to wholly or partially vaporize in the closed vessel when the second portion thereof is heated whereby the vapor transfers heat to the first portion of the vessel by which the chamber and oil flowing therethrough is adapted to be heated at least to a temperature substantially consistent with the temperature of the latent heat of vaporization of the heat transfer material under the pressure conditions determined within the closed vessel.
Inventors
- 👤 D Asdell
- 👤 J Mascall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:29
CPC Classifications
F; F28; F28D; F28D15/00; F28D15/02; F28D15/0275; F22; F22B; F22B1/00; F22B1/02; F22B1/08; F23; F23K; F23K5/00; F23K5/02; F23K5/14; F23K5/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
169 words
A method of heating oil which flows through a chamber, said oil commencing degradation at a predetermined temperature and which method includes the steps of positioning in the chamber a closed vessel containing a heat transfer material and locating such vessel so that a first portion thereof is positioned within the oil flow and a second portion thereof is positioned remotely from the oil flow, said portions being arranged so that the heat transfer material in the vessel can flow from the first portion to the second portion thereof; and heating the second portion of the vessel in thermal isolation from said heating oil to wholly vaporize at a temperature less than said predetermined temperature the heat transfer material in said vessel whereby the vapor transfers heat to the first portion of the vessel and thereby to the oil at a temperature at least substantially consistent with the temperature of the latent heat of vaporization of the heat transfer material under the pressure conditions determined within the closed vessel.
Claim 2
Independent Claim
169 words
A method of heating oil which flows through a chamber, said oil commencing degradation at a predetermined temperature and which method includes the steps of positioning in the chamber a closed vessel containing a heat transfer material and locating such vessel so that a first portion thereof is positioned within the oil flow and a second portion thereof is positioned remotely from the oil flow, said portions being arranged so that the heat transfer material in the vessel can flow from the first portion to the second portion thereof; and heating the second portion of the vessel in thermal isolation from said heating oil to wholly vaporize at a temperature less than said predetermined temperature the heat transfer material in said vessel whereby the vapor transfers heat to the first portion of the vessel and thereby to the oil at a temperature at least substantially consistent with the temperature of the latent heat of vaporization of the heat transfer material under the pressure conditions determined within the closed vessel.
Claim 3
Dependent Claim
208 words
An oil heating system comprising a closed circuit containing oil to be heated, said oil commencing degradation at a predetermined temperature; an oil circulating pump in said circuit; a chamber in said circuit through which oil flows; an array of tubes, each of said tubes having its ends sealed to provide a closed vessel and each said tube extending in a sealed manner through a thermally non conducting wall of said chamber to locate one end portion thereof in the oil in said chamber and the other end portion thereof at a position outside of the chamber and remote from the oil; heater means for heating said other end portions of the tubes; and wherein each said closed vessel formed by the tube contains a heat transfer material which is wholly vaporized in the closed vessel at a temperature less than said predetermined temperature when said other end portion of the tube is heated by the heater means, said vapor serving to transfer heat to said one end portion of the tube by which oil flowing through the chamber is heated to a temperature substantially consistent with the Temperature of latent heat of vaporization of the heat transfer material under the pressure conditions determined within said closed vessels.
Claim 4
Dependent Claim
208 words
An oil heating system comprising a closed circuit containing oil to be heated, said oil commencing degradation at a predetermined temperature; an oil circulating pump in said circuit; a chamber in said circuit through which oil flows; an array of tubes, each of said tubes having its ends sealed to provide a closed vessel and each said tube extending in a sealed manner through a thermally non conducting wall of said chamber to locate one end portion thereof in the oil in said chamber and the other end portion thereof at a position outside of the chamber and remote from the oil; heater means for heating said other end portions of the tubes; and wherein each said closed vessel formed by the tube contains a heat transfer material which is wholly vaporized in the closed vessel at a temperature less than said predetermined temperature when said other end portion of the tube is heated by the heater means, said vapor serving to transfer heat to said one end portion of the tube by which oil flowing through the chamber is heated to a temperature substantially consistent with the Temperature of latent heat of vaporization of the heat transfer material under the pressure conditions determined within said closed vessels.
Claim 5
Independent Claim
178 words
A method of heating a heat degradable heating liquid comprising oil which flows through a chamber, said heating liquid commencing degradation at a predetermined temperature, and which method includes the steps of positioning in the chamber a closed vessel containing a heat transfer material and locating such vessel so that a first portion thereof is positioned within the heating liquid flow and a second portion thereof is positioned remotely from the heating liquid, said portions being arranged so that the heat transfer material in the vessel can flow from the first portion to the second portion thereof; and heating the second portion of the vessel in thermal isolation from said heating liquid to wholly vaporize at a temperature less than said predetermined temperature the heat transfer material in said vessel whereby the vapor transfers heat to the first portion of the vessel and thereby to the heating liquid at a temperature at least substantially consistent with the temperature of the latent heat of vaporization of the heat transfer material under the pressure conditions determined within the closed vessel.
Claim 6
Independent Claim
178 words
A method of heating a heat degradable heating liquid comprising oil which flows through a chamber, said heating liquid commencing degradation at a predetermined temperature, and which method includes the steps of positioning in the chamber a closed vessel containing a heat transfer material and locating such vessel so that a first portion thereof is positioned within the heating liquid flow and a second portion thereof is positioned remotely from the heating liquid, said portions being arranged so that the heat transfer material in the vessel can flow from the first portion to the second portion thereof; and heating the second portion of the vessel in thermal isolation from said heating liquid to wholly vaporize at a temperature less than said predetermined temperature the heat transfer material in said vessel whereby the vapor transfers heat to the first portion of the vessel and thereby to the heating liquid at a temperature at least substantially consistent with the temperature of the latent heat of vaporization of the heat transfer material under the pressure conditions determined within the closed vessel.
Claim 7
Dependent Claim
214 words
A heating system having a closed circuit containing a heat degradable heating liquid comprising oil to be heated, said liquid commencing degradation at a predetermined temperature; a circulating pump in said circuit; a chamber in said circuit through which said heating liquid flows; an array of tubes, each of said tubes having its ends sealed to provide a closed vessel and each said tube extending in a sealed manner through a thermally non-conducting wall of said chamber to locate one end portion thereof in the liquid in said chamber and the other end portion thereof at a position outside of the chamber and remote from the said liquid; heater means for heating said other end portions of the tubes; and wherein each said closed vessel formed by the tube contains a heat transfer material which is wholly vaporized in the closed vessel at a temperature less than said predetermined temperature when said other end portion of the tube is heated by the heater means, said vapor serving to transfer heat to said one end portion of the tube by which liquid flowing through the chamber is heated to a temperature substantially consistent with the temperature of latent heat of vaporization of the heat transfer material under the pressure conditions determined within said closed vessels.
Claim 8
Dependent Claim
214 words
A heating system having a closed circuit containing a heat degradable heating liquid comprising oil to be heated, said liquid commencing degradation at a predetermined temperature; a circulating pump in said circuit; a chamber in said circuit through which said heating liquid flows; an array of tubes, each of said tubes having its ends sealed to provide a closed vessel and each said tube extending in a sealed manner through a thermally non-conducting wall of said chamber to locate one end portion thereof in the liquid in said chamber and the other end portion thereof at a position outside of the chamber and remote from the said liquid; heater means for heating said other end portions of the tubes; and wherein each said closed vessel formed by the tube contains a heat transfer material which is wholly vaporized in the closed vessel at a temperature less than said predetermined temperature when said other end portion of the tube is heated by the heater means, said vapor serving to transfer heat to said one end portion of the tube by which liquid flowing through the chamber is heated to a temperature substantially consistent with the temperature of latent heat of vaporization of the heat transfer material under the pressure conditions determined within said closed vessels.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-15 | 1977-10-15 | 1978-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-15 | 1981-10-15 | 1982-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-15 | 1985-10-15 | 1986-04-16 | $7700.00 | Window Closed / Lapsed |