US1875856A - Water heater baffle - Google Patents

Description

6, 1932- A. F. CRAVER I 1,875,856

WATER HEATER BAFFLE Filed Jan. 5, 1931 INVENTOR Albert F. Grave/r Mo ATTOR Patented Sept. 6, 1932 "unwrap STATES PATENT OFFICE f ALBERT F. CBAVEB, or LAKEWOOD, onro, assrenon ro'rHEc EvELANnnEATEn corr- PANY, 0F CLEVELAND, onro, a co PoRArIon or 0310 WATER HJill-DEER- BAIEFLE Application filed. January 5,1931. Serial 10.506 54.

This invention relates to heating appliances and in particular baffling devices for use in connection therewith adapted to be located in the path of the heated gases from a source of heat-for the purpose of efi'ecting an eflicient transfer of heat from one medium to another. v 7

My invention is particularly adapted foruse in connection with internal fired water heaters of the type employing a fine which runs through the storage vessel of the heater by means of which the heat generated by a gas burner is transferred to the liquid contents of the container. It has for its object the provision of a battle for the heated products of combustion of a gas burner which is adapt ed to effect a more efficient transfer of heat to the liquid contents of the container and at the same time is designed so as to be inexpensive to manufacture and easy to install and constructed so as to greatly increase the efficiency of the heater without slowing down the velocity of the gases being vented to the point where incomplete combustion might take place.

With these and other objects in view, the invention consists in the novel construction, arrangement and combination of partsQhereinafter described, illustrated in some of its embodiments in the accompanying drawing and particularly pointed out in the appended claims.

In the drawing, Figure 1 is a sectional view showing my improved baffle in combination with an internal fired water heater.

Figure 2 is an enlarged side view of one of the baffle elements.

Figure 3 is an end view of the baffle elements.

Figure 4 is a side view showing the construction of the end portions of the baffle.

Figure 5 is a side view of the upper portion of the top baflie member.

Figure 6 is an end view of the top baflie member.

The heater shown in the drawing comprises a water storage tank or container 1 with the lower portion 13 extended below,

the bottom of the tank so as to form a combustion space 5 for the reception of the burner 1-1. m This burner is provided with central portion 4 thatis adapted to function as an independently cont-rolled pilot light. The gas suply to the main burner 11 iscontrolled by the valve 6, and the gas supply of the pilot 4 is controlled by a valve 7. Both of these valves are adapted to be placed into communication with a source of gas supply which may be connected to the inlet side of the body of the valve 6.

A passsageway or flue3 communicateswith the combustion space 5 and extends longit'u' dinally through the heater tank I terminating atthe top thereof where it is adapted to besconnect ed to a chimney by .means of a suitable vent. pipe. The upper portion of the tank is provided with a art oftapped openings one of which is shown in Figure 7 land which are adapted for the reception of union fittings such as 2 whereby the. cold water'inlet and the hot water outlet of the heater are connected to thecold water supply line and to the hot water piping system.

Inorder toeifect a more eflicient transfer of heat in the flue 3 to the contentsfof the tank 1 Ihave devisedand use an improved baflie which is preferably formed from cast iron and is made in sections so that it may Joe-used with heaters of various lengths without requiring any change in the construction of the baffles otherthanthat. of adding or taking of additional baflle elements. The individual baffles 8- are formed with ahelical surf ace as would result from twisting a flat strip; of material andpat their upper ends have spacer fins 10' and notched 'o-rf hooked portions 12 by means of which thead-jacent baffle elementsare. secured to eachother. The upper battle is provided with projections or extending portions 9 which are adapted to engage the upp'er'portion of the tank for the purpose of supporting the otherbafile memberssecured'to it in position in the flue or passageway 13.. v

A single pattern is used in making the molds for the baffle elements. This pattern is substantially the same as the baffieshown in Figure 2. "Wheni t is desired to cast. the end bafiiemembers a. rectangular rod is fitted in the hooked portions 12: of the pattern-so that one end of the pattern would look like the bafile end portions shown in Figures 5 and 6, and the element cast from such a pattern would correspond to the upper element shown in Figure 1. By this expedient. all of the bafllefelements may be cast from a single'pattern. In the operation of the heater,'the heated gases from the combustion space '5- flow through the flue or passageway 3- and by reason of my improved baflie are directed and thrown against the sides of the passagewa y and their length of travel is considerably increased so that by reasonof these two .factors a more. efiicient transferof heat is ef fected, thereby increasing the over-all efliciency ofthe heater and efiecting a marked savings in the amount of gas consumed. In addition to the effects noted-,. a considerable portion of the heat absorbed by the baflles I is directly conducted to the sidesof the flue andthen transferred to the water in the tank from the other and having laterally "extendhelical form, said members being provided with end hooks for suspending. one member ing fins adapted to contact with the correspondingfins of the adjacent element.

In testimony whereof I aifix my signature. J t ALBERT F. CRAVER.

1. In addition to these advantages it is ap parent that this'baflle maybe used-on heaters of difierent lengths by 'merely changing the number baifie' elements as required. When the baflie elements are in positionin the flue 3 it is impossible to disengage them from each other as they must be laterally displaced in order to efi'ect such disengagement and they are fitted in the fiue'so 'thatit is impossibleto make such displacement. Furthermore, it is' tofbe understood that the particular forms of apparatus shown and describechand the particularprocedure set forth, are presented for purposes of explana% tion and illustration and that various modifications of said apparatus and procedure can be made without departing from my invention as defined in the appended claims. g Having thus describedmy invention, what Iclaim is: v V

1. A baflie tor a heating applianceeomprising a pluralityof detachably and vertically arranged interlockingbafile elements of I cast metal, the upper bafileelement of'which is provided with a supporting cross bar at I one end and hooks at the other end and the lower baflles of which are; provided with hooks at their ends for detachable'engagement with each other'and with saidfirst mentioned'element.

2. A baffle for water heaters comprising a plurality of detachably and "vertically arranged interlocking baflle plates formed with notched ends whereby the engagement be- .tween; adjacent battles is effected; the uppermost bafile having a laterally extending rod I formed in the notched portions of one end thereof for the purpose of supporting the bafiie in the heater.

3. A vertically arranged baflle for a heating appliancecomprising a pluralityof similarly formed detachably interlocked -mem-' we n bers, said members being provided with end

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