US2422488A

US2422488A - Baffle attachment for a heating coil surrounding a combustion tube burner

Info

Publication number: US2422488A
Application number: US605814A
Authority: US
Inventors: Kenrick Marie Andersen
Original assignee: Individual
Current assignee: Individual
Priority date: 1945-07-18
Filing date: 1945-07-18
Publication date: 1947-06-17
Anticipated expiration: 1964-06-17

Description

June 17, 1947. M. A, KENRCK 2,422,488

BAFFLE ATTACHMENT FOR A HEATING COIL SURROUNDING A COMBUSTION TUBE BURNER Filed July 18, 1945 Patented June 17, 1947 BAFFLE ATTACHMENT FOR A HEATING COIL SURROUNDING A COMBUSTION TUBE BURNER Marie Andersen Kenrick, South Yarmouth, Mass.

Application July 18, 1945, Serial No. 605,814

5 Claims.

This invention relates to a bafiie attachment for a hot water heating coil such, for example, as is, used with a conventional domestic oil burner of the type illustrated in United States Patent No. 1,764,794 granted June 17, 1930, and its prinicipal objects are to provide an attachment which is capable of greatly increasing the heating efficiency of the burner and to provide an attachment which is of simple design and durable construction, which may be readily applied to a heating coil and which may be manufactured at a relatively low cost.

Further objects relate to various features of construction and will be apparent, from a consideration of the following description and accompanying drawings, wherein Fig. 1 is an elevation, with parts broken away, of a conventional domestic oil burner having a heating coil equipped with a baflleattachment constructed in accordance with the present invention;

Fig. 2 is a perspective view of the baffle plate;

Fig. 3 i a perspective View of the supporting member for the baiile plate; and

Fig. 4 is a modified form of the baffle plate.

The embodiment herein shown for the purpose of illustration comprises a conventional oil burner of the type illustrated in the aforementioned patent which is provided with a conventional hot water heating coil 2, here shown as having six convolutions between its intake end 4 and its discharge end 5. If desired, a perforate shield 6 may be circumposed about the coil 2, as illustrated in Fig. 1.

The battle attachment comprises an annular member I formed of suitable sheet metal and of a size conforming to the diameter of the convolutions of the heating coil 2, and a plurality of resilient U-shaped metal clips H depending from its undersurface and adapted to clamp about the upper convolutions a and b of the heating coil 2 so as to anchor the annular member I0 firmly in substantially horizontal position on the top of the coil, as illustrated in Fig. 1. The annular member I0 supports a removable lid or bafiie member l5 which comprises an upper perforate circular plate I6 of suitable sheet metal having a diameter exceeding the inner diameter of the annular member l0, and a lower perforate plate l8 of suitable sheet metal having a diameter substantially less than the inner diameter of the annular member ID. The upper and lower plates are connected by a plurality of spacers, consisting of reversely bent metal strips 20 which are welded, riveted or otherwise secured to the plates so as to maintain them in predetermined spaced parallel relation.

It has been found that the spacing between the plates l6 and I8 has a marked effect on the heat transferred to the coil and. in accordance with the preferred aspect of the invention the spacers 20 are adjustable by being bent transversely in one direction or the other about their approximate centers 2| (Fig. 2) so as to vary the effective spacing between the two plates. Thus, the spacers may be bent so as to maintain the plates I6 and I8 spaced apart from a practical minimum of approximately 1 inch or less to a maximum of 3 inches or more. However, a spacing of the order of 2 inches has been found to be the optimum for the majority of installations.

In many cases it may be advisable, particularly Where a constant flame is used, to employ a bafile having a fixed setting between its upper and lower plates, in which event a baffie member 15* (Fig. 4) may be advantageously used. This modified form of bafile member comprises an upper plate I6 which may be the same in all material particulars as the plate iii of the embodiment of Fig. 2, and a lower plate l8 consisting of a dished member having an upstanding flaring side 24, the upper edge of which is welded or otherwise suitably secured to the undersurface of the upper plate. The diameter at the upper edge of the plate l8 is substantially less than the inner diameter of the annular member Ill and the side wall 24 permanently holds the two plates in fixed spaced parallel relation, preferably approximately 2 inches apart, which has been found to be the optimum distance for most installations.

In order to permit removal and replacement of the baffle member 15 or [5 the upper plate may be provided with a handle 25, here shown as consisting of an inverted U-shaped member.

A baffle attachment constructed in accordance with the present invention has been found to increase the elficiency of a hot water heating installation of the type herein illustrated from 10 to 30% or more depending upon the setting or adjustment of the fiame. A further advantageous feature of my new attachment is that it may be readily removed for cleaning and replaced without; the slightest difficulty. Moreover, the constituent parts of the attachment may be readily fabricated from sheet metal by the usual stamping operations and the parts may be quickly assembled by relatively unskilled operators, thus insuring economy of production.

While I have shown and described difierent desirable embodiments of the invention it is to be understood that this disclosure is for the purpose of illustration and that various changes or modifications in shape, proportion, and arrangement of parts may be made without departing from the spirit and scope of the invention as set forth in the appended claims.

I claim:

1. A baille attachment for a heating coil cire cumposed about a burner, comprising an annular member having a plurality of circumferentially spaced clips adapted to grip the upper convolution of saidheating coil so as to anchor the annular member at the top of said coil in substantially horizontal position, and a baffle member supported by said annular member and including an upper circular plate having a diameter exceeding the inner diameter of said annular member so as to rest on said annular member, a lower circular plate having .a diameter substantially less than the inner diameter of said annular member so as to fit within said annular member, and spacing means connecting the two circular plates so as to maintain them in predetermined spaced parallel relation,

2. A' baflle attachment for a heating coil circumposed about a burner, comprising an annular member having a plurality of circumferentially spaced depending clips adapted to grip the upper convolutions of said heating coil so as to anchor the annular member at the top of said coil in substantially horizontal position, and a baille member supported by said annular member and including an upper circular perforate plate having a diameter exceeding theinner diameter of said annular member so as to rest on said annular member, a lower circular perforate plate havingJa diameter substantially less than the inner diameter of said annular member so as to fit within said annular member, and spacing means connecting the two circular plates so as to maintain them in predetermined spaced parallel relation.

3. A baffle attachment for a heating coil circumposed about a burner, comprising an annular member having a plurality of circumferentially spaced clips adapted to grip the upper convolution of said heating coil was to anchor the annular member at the top of said coil in substantially horizontal position, and a baille member supported by said annular member and including an upper circular plate having a diameter exceeding theinner diameter of said annular member so as to rest on said annular member, a lower circular plate having a diameter substantially less than the inner diameter of said annular member so as to fit within said annular member, and spacers consisting of a plurality of reversely bent metal strips secured to the upper and lower circular plates so as to maintain said plates in predetermined spaced parallel relation,

said strips being transversely bendable so as to vary the effective spacingrbetween said plates.

4. A baffle attachment for a heating coil circumposed about a burner, comprising an annular member having a plurality of circumierentially spaced depending U-shaped resilient clips adaptsaid annular member, a lower circular plate having a diameter substantially less than the inner. diameter of said annular member so as to fit Within said annular member, and spacing means connecting the two circular plates so as to maintainthem in predetermined spaced parallelrelation.

5. A bafile attachment for a heating coil circumposed about a burn-er, comprising an annular member having a plurality of circumferentially spaced clips adapted to grip the upper convolution of asid heating coil so as to anchor the annular member at the top of said coil in substantially horizontal position, and a baflle member supported by said annular member and including aflat circular upper perforate plate having a diameter greater than c the inner diameter of said annular member so as to rest on said annular member and a dished lovver plate having a diameter substantially less than the inner diameter of said annular member so as to fit within said annular member, the upper edge of said lower plate being secured against the undersurface of said upper plate so as to hold the body portions of the two plates in predetermined spaced parallel relation.

MARIE ANDERSEN KENRICK.

' REFERENCES CITED The following references are of record in the file of this patent: Y i 7