US3623458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stackless outdoor heater adapted for swimming pools
Assignee: Raypak Co Inc
•
Filing: 1969-11-06
•
Granted: 1971-11-30
•
Expires: 1989-11-06
Abstract
Abstract The invention is a heating appliance of the stackless type particularly adapted for heating swimming pool water. Openings are provided at the upper part of the appliance for admitting atmospheric air for combustion and allowing it to mix with and dilute flue products before being discharged to keep the appliance cool. Around the upper part of the unit is a baffle member in the form of a collar preventing direct effect of wind velocity on the openings. The heater is provided with an air jacket with openings on one or more sides to admit air for combustion and to admit convection cooling air for keeping the unit cool. The openings are so arranged that when the unit is subjected to wind of various velocities the effect is to produce a controlled forced draft of combustion air which insures expelling the flue products from the unit. Baffling is provided to prevent access of driving rain into the flue products area and into the air jacket.
Inventors
- 👤 Leo Block
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:18
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/10; F24H1/12; F24H1/14; F24H1/145
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
81 words
A heating appliance having a combustion chamber, a flue products chamber and fluid heating unit, the appliance having first openings near the upper part thereof for admitting air into the appliance and having other openings near the upper part thereof for discharge of flue products and means including an imperforate top portion of said appliance providing passageways connecting at least some of said first openings and said other openings whereby some of said air mixes with and dilutes said flue products.
Claim 2
Dependent Claim
81 words
A heating appliance having a combustion chamber, a flue products chamber and fluid heating unit, the appliance having first openings near the upper part thereof for admitting air into the appliance and having other openings near the upper part thereof for discharge of flue products and means including an imperforate top portion of said appliance providing passageways connecting at least some of said first openings and said other openings whereby some of said air mixes with and dilutes said flue products.
Claim 3
Dependent Claim
26 words
A structure as in claim 1, including an air jacket on said appliance and passageways for admitting combustion air into said jacket, through said first openings.
Claim 4
Dependent Claim
119 words
A heating appliance having a combustion chamber, a flue products chamber and fluid heating unit, the appliance having first openings near the upper part thereof for admitting air into the appliance and having other openings near the upper part thereof for discharge of flue products and passageways connecting at least some of said first openings and said other openings whereby some of said air mixes with and dilutes said flue products, an air jacket on said appliance and passageways for admitting combustion air into said jacket, through said first openings, and openings positioned at the lower part of said jacket for admitting air thereto, whereby convection air rises in the jacket and mixes with entering air and flue products.
Claim 5
Dependent Claim
119 words
A heating appliance having a combustion chamber, a flue products chamber and fluid heating unit, the appliance having first openings near the upper part thereof for admitting air into the appliance and having other openings near the upper part thereof for discharge of flue products and passageways connecting at least some of said first openings and said other openings whereby some of said air mixes with and dilutes said flue products, an air jacket on said appliance and passageways for admitting combustion air into said jacket, through said first openings, and openings positioned at the lower part of said jacket for admitting air thereto, whereby convection air rises in the jacket and mixes with entering air and flue products.
Claim 6
Dependent Claim
37 words
A structure as in claim 3, said lower openings being positioned to provide for controlled forced draft of combustion air downwardly in the jacket under conditions of limited or high wind to which the appliance is exposed.
Claim 7
Dependent Claim
47 words
A structure as in claim 4, including additional openings in the said jacket intermediate the first openings and the lower openings whereby to assist in the control of the forced draft for combustion under wind conditions by producing controlled downward movement of combustion air within the jacket.
Claim 8
Dependent Claim
21 words
A structure as in claim 1, wherein the said openings in the jacket are provided on a plurality of sides thereof.
Claim 9
Dependent Claim
44 words
A structure as in claim 2, wherein the said openings for discharge of flue products are in the top of the heater, and means whereby to prevent driving rain from having access to the flue products chamber and to the inside of the jacket.
Claim 10
Dependent Claim
16 words
A structure as in claim 7, said last-named means including baffles positioned to deflect the rain.
Claim 11
Dependent Claim
26 words
A fluid heating appliance as in claim 1 comprising baffle means adjacent to said first openings to protect them from the direct velocity of the wind.
Claim 12
Dependent Claim
24 words
A structure as in claim 9, wherein said baffle means is in the form of a collar around the upper part of the appliance.
Claim 13
Dependent Claim
30 words
A structure as in claim 10, wherein said collar comprises spaced vertical walls providing passageways for vertical movement of convection air for keeping the upper part of the appliance cool.
Claim 14
Dependent Claim
36 words
A structure as in claim 10, including brackets supporting said collar, said brackets being constructed to form air ducts adapted to carry cooling air upwardly to be discharged through openings in the top of the appliance.
Claim 15
Dependent Claim
31 words
A structure as in claim 12, the brackets providing channels between them, and means providing openings to admit air to the said channels to mix with and dilute products of combustion.
Claim 16
Dependent Claim
50 words
A structure as in claim 1, including baffle means positioned adjacent To the uppermost of said first openings whereby to create a flow of air producing a venturi effect in a manner to create a negative pressure serving to evacuate flue products from the flue product area of the heater.
Claim 17
Dependent Claim
107 words
A heating appliance having a combustion chamber, a flue products chamber and fluid heating unit, the appliance having first openings near the upper part thereof for admitting air into the appliance and having other openings near the upper part thereof for discharge of flue products and passageways connecting at least some of said first openings and said other openings whereby some of said air mixes with and dilutes said flue products, baffle means adjacent to said first openings to protect them from the direct velocity of the wind, said baffle means comprising spaced walls forming passageways for convection air for cooling the upper part of the appliance.
Claim 18
Dependent Claim
107 words
A heating appliance having a combustion chamber, a flue products chamber and fluid heating unit, the appliance having first openings near the upper part thereof for admitting air into the appliance and having other openings near the upper part thereof for discharge of flue products and passageways connecting at least some of said first openings and said other openings whereby some of said air mixes with and dilutes said flue products, baffle means adjacent to said first openings to protect them from the direct velocity of the wind, said baffle means comprising spaced walls forming passageways for convection air for cooling the upper part of the appliance.
Claim 19
Dependent Claim
87 words
A heating appliance having a combustion chamber, a flue products chamber and fluid heating unit, the appliance having first openings near the upper part thereof for admitting air into the appliance and having other openings near the upper part thereof for discharge of flue products and passageways connecting at least some of said first openings and said other openings whereby some of said air mixes with and dilutes said flue products, the appliance having a flat top, said other opening being at peripheral edges of the top.
Claim 20
Dependent Claim
87 words
A heating appliance having a combustion chamber, a flue products chamber and fluid heating unit, the appliance having first openings near the upper part thereof for admitting air into the appliance and having other openings near the upper part thereof for discharge of flue products and passageways connecting at least some of said first openings and said other openings whereby some of said air mixes with and dilutes said flue products, the appliance having a flat top, said other opening being at peripheral edges of the top.
Claim 21
Dependent Claim
29 words
A structure as in claim 16, comprising a collar extending around the upper part of the appliance, said first openings being formed at least in part by said collar.
References Cited (Backward Citations)
GB284038A
Cited
US1782229A
Cited
US1871574A
Cited
US2556804A
Cited
US3082758A
Cited
US3421482A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |