# US 2013/0153183 A1 · Heat Exchanger

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- Number: US 2013/0153183 A1
- Document ID: US20130153183A1
- Status: Published application
- Kind: A1
- Application number: 13/329,949
- Filed: 2011-12-19
- Published: 2013-06-20
- Earliest claimed: 2011-12-19
- Assignees: Ecodrain Inc.
- Inventors: David Velan
- Web page: https://patentgrep.com/patent/US20130153183A1

## CPC

- F28F 9/00: Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28D 7/0025: {the conduits for one medium or the conduits for both media being flat tubes or arrays of tubes}
- F28D 7/10: the conduits being arranged one within the other, e.g. concentrically {(multiple wall tubes for leak detection F28F1/003)}
- F28D 21/0012: {the heat being recuperated from waste water or from condensates}
- F28F 1/022: {with multiple channels}
- F28F 1/04: polygonal, e.g. rectangular {(F28F1/022 takes precedence)}
- F28F 9/013: for tubes or tube-assemblies
- F28F 9/0275: {with multiple branch pipes}
- F28F 9/26: Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators (connecting different sections in water heaters F24H9/14 {, connecting headers with inlet or outlet fittings F28F9/0246})
- F28F 13/12: by creating turbulence, e.g. by stirring, by increasing the force of circulation (F28F13/08 takes precedence)
- E03C 2001/005: {Installations allowing recovery of heat from waste water for warming up fresh water}
- F28F 2265/16: for preventing leakage
- Y02B 30/56: Heat recovery units
- F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16)
- F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general)
- E03C: DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER (not connected to either water-supply main or to waste pipe A47K; devices of the kind used in the ground E03B, E03F); SINKS
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

## Abstract

A heat exchanger comprising substantially square (rectangle) conduits featuring a screw like turbulator designed for square conduits. The tubes are designed for reclaiming heat from waste fluids. The tubes are substantially parallel to the flow direction of the waste fluid, thus resulting in a simple and cost effective construction.

## Claims

### Claim 1

A heat exchanger apparatus comprising:
a. a conduit for a first fluid therealong; and
b. said conduit substantially square.
c. a means for increasing the heat transfer characteristics of said first fluid contained within said first conduit.

### Claim 2 (depends on 1)

The apparatus, according to claim 1, in which said means comprises a core with at least one extending member which induces a helical flow within said conduit.

### Claim 3 (depends on 1)

The apparatus, according to claim 1, in which said means comprises a folded fin that creates multiple smaller channels within said first conduit.

### Claim 4 (depends on 1)

The apparatus, according to claim 1, in which said means can be made from injection molded plastic.

### Claim 5 (depends on 1)

The apparatus, according to claim 1, in which the first fluid is water.

### Claim 6

A heat exchanger apparatus comprising:
a. a first conduit for carrying drain fluids
b. at least one second conduit for carrying a second fluid.
c. said second conduit substantially parallel to said first conduit.
d. Said second conduit of a shape such that a portion of its outer surface is in direct contact with the outer surface of said first conduit.
e. a means for increasing the heat transfer characteristics of said second fluid contained within said second conduit.

### Claim 7 (depends on 7)

The apparatus, according to claim 7, in which said second conduit is substantially square.

### Claim 8 (depends on 7)

The apparatus, according to claim 7, in which said second conduit comprises a substantially square tube which has been modified on one side with a curve to match said first conduit.

### Claim 9 (depends on 7)

The apparatus, according to claim 7, in which said means comprises a core and at least one extending member which induces a helical flow in said second conduit.

### Claim 10 (depends on 7)

The apparatus, according to claim 7, in which said means comprises a folded fin that creates multiple smaller channels within said first conduit.

### Claim 11 (depends on 7)

The apparatus, according to claim 7, in which said means can be made from injection molded plastic.

### Claim 12 (depends on 7)

The apparatus, according to claim 7, in which the first fluid is waste water.