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US 4,569,652 AGranted
Combustion cylinder construction for oil space heater
AssigneeToyotomi Kogyo Co., Ltd.
InventorsKazuharu Nakamura, Yoshio Mito, Yutaka Nakanishi
Life of this patent
Estimating the term…
Abstract
A combustion cylinder construction for an oil space heater is disclosed which is constructed to dispose a uniform air flow forming mechanism between an outermost heat-permeable cylinder and an outer cylindrical member of a double combustion cylinder, thereby not only to keep the double combustion cylinder in a red-heated state, but also to carry out the formation of a uniform and stable white-yellow flame and to complete combustion at a flame spreading means. There is also disclosed a combustion cylinder construction which further includes a heat ray reflecting means to render the temperature profiles through the heat-permeable cylinder as uniform as possible, resulting in an oil space heater having a long service life.
Claims18
A combustion cylinder construction for an oil space heater of the heat radiation type, comprising:
- a double combustion cylinder comprising an inner cylindrical member and an outer cylindrical member each formed of a heat-resistant material and with through-holes, said double combustion cylinder being adapted to mix fuel oil vaporized from a wick with air introduced from a part of said through holes to form a combustible gas and burn a part of said combustible gas both in a first space defined between said inner cylindrical member and said outer cylindrical member and at the outer side of said outer cylindrical member to red-heat at least said outer cylindrical member;
- a flame spreading means disposed above said double combustion cylinder to burn the rest of said combustible gas and any incompletely combusted gas contained in gases generated from said double combustion cylinder, to form and spread a white-yellow flame at the outside of said flame spreading means;
- a heat-permeable cylinder formed of a heat-resistant material and disposed to surround said double combustion cylinder and said flame spreading means;
- and,
- a uniform flow forming means for providing a passage rendering a flow of combustion air supplied through a second space between said double combustion cylinder and said heat-permeable cylinder to the outside of said flame spreading means substantially uniform with respect to the entire periphery of said flame spreading means, said uniform flow forming means including top plate means positioned at an upper end portion of said outer cylindrical member so as to extend toward said heat-permeable cylinder and spacer means disposed between said top plate means and said heat-permeable cylinder so as to fix said top plate in spaced relation relative to said heat-permeable cylinder.
2 more elements
A combustion cylinder construction for an oil space heater of the heat radiation type, comprising:
- a double combustion cylinder comprising an inner cylindrical member and an outer cylindrical member each formed of a heat-resistant material and with through-holes, said double combustion cylinder being adapted to mix fuel oil vaporized from a wick with air introduced from a part of said through holes to form a combustible gas and burn a part of said combustible gas both in a first space defined between said inner cylindrical member and said outer cylindrical member and at the outer side of said outer cylindrical member to red-heat at least said outer cylindrical member;
- a flame spreading means disposed above said double combustion cylinder to burn the rest of said combustible gas and any incompletely combusted gas contained in gases generated from said double combustion cylinder, to form and spread a white-yellow flame at the outside of said flame spreading means;
- a heat-permeable cylinder formed of a heat-resistant material and disposed to surround said double combustion cylinder and said flame spreading means;
- and,
- a uniform flow forming means, located at the top portion of said outer cylindrical member, for rendering the flow of a combustion air supplied through a second space between said double combustion cylinder and said heat-permeable cylinder to the outside of said flame spreading means substantially uniform with respect to the entire periphery of said flame spreading means, said uniform flow forming means comprising a top plate provided at an upper end portion of said outer cylindrical member so as to extend toward said heat-permeable cylinder and a spacer means disposed between said top plate and said heat-permeable cylinder so as to space said top plate from said heat-permeable cylinder at a fixed distance, and said spacer means being provided with a passage for uniformly supplying said combustion air therethrough from said second space to the outside of said flame spreading means.
2 more elements
A combustion cylinder construction for an oil space heater of the heat radiation type, comprising:
- a double combustion cylinder comprising an inner cylindrical member and an outer cylindrical member each formed of a heat-resistant material and with through-holes, said double combustion cylinder being adapted to mix fuel oil vaporized from a wick with air introduced from a part of said through holes to form a combustible gas and burn a part of said combustible gas both in a first space defined between said inner cylindrical member and said outer cylindrical member and at the outer side of said outer cylindrical member to red-heat at least said outer cylindrical member;
- a flame spreading means disposed above said double combustion cylinder to burn the rest of said combustible gas and any incompletely combusted gas contained in gases generated from said double combustion cylinder, to form and spread a white-yellow flame at the outside of said flame spreading means;
- a heat-permeable cylinder formed of a heat-resistant material and disposed to surround said double combustion cylinder and said flame spreading means;
- and,
- a uniform flow forming means, located at the top portion of said outer cylindrical member, for rendering the flow of a combustion air supplied through a second space between said double combustion cylinder and said heat-permeable cylinder to the outside of said flame spreading means substantially uniform with respect to the entire periphery of said flame spreading means, said uniform flow forming means comprising a top plate provided at an upper end portion of said outer cylindrical member so as to extend toward said heat-permeable cylinder and a spacer means disposed between said top plate and said heat-permeable cylinder so as to space said top plate from said heat-permeable cylinder at a fixed distance, said top plate being provided with through-holes which are arranged in the circumferential direction at substantially regular intervals to form a passage for uniformly supplying said combustion air from said second space to the outside of said flame spreading means, said spacer means being formed of a heat-insulating sealing material.
2 more elements
A combustion cylinder construction for an oil space heater, comprising:
- a double combustion cylinder comprising an inner cylindrical member and an outer cylindrical member each formed of a heat-resistant material and with through-holes, said double combustion cylinder being adapted to mix a fuel oil vaporized from a wick with an air introduced from a part of said through-holes to form a combustible gas and burn a part of said combustible gas in a first space defined between said inner cylindrical member and said outer cylindrical member;
- a flame spreading means disposed above said double combustion cylinder to burn the rest of said combustible gas and an incomplete combustion gas contained in a combustion gas generated from said double combustion cylinder to form a white-yellow flame;
- a heat-permeable cylinder formed of a heat-resistant material and disposed to surround said double combustion cylinder and said flame spreading means;
- a uniform flow forming means for rendering the flow of a combustion air supplied from a second space between said outer cylindrical member and said heat-permeable cylinder to the outside of said flame spreading means substantially uniform with respect to the entire periphery of said flame spreading means;
- and
- a heat ray reflecting means provided at a low temperature area of said heat-permeable cylinder interposed between two high temperature areas of said heat-permeable cylinder.
3 more elements
Dependencies are inferred from the claim text.