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US 11,604,033 B2Granted
Notched base ring for use with a heat exchanger of a pressure washer
AssigneeNorthern Tool & Equipment Company, Inc.
InventorsKyle Hecimovich, John Schuetz
Life of this patent
Estimating the term…
Abstract
The notched base ring comprises a base ring sheet body including a top portion, a bottom portion, a first end connecting the top portion to the bottom portion, and a second end connecting the bottom portion to the top portion. The top portion includes a plurality of attachment lugs and defines a plurality of notches, each notch being at least partially defined by two lugs disposed on opposite sides of the notch, the top portion also including an angled top edge that is disposed at each of the attachment lugs, and the bottom portion includes a bottom support edge.
Claims19
A notched base ring for use with a heat exchanger of a pressure washer, the notched base ring comprising:
- a base ring sheet body including a top portion, a bottom portion, wherein the top portion includes a plurality of attachment lugs and defines a plurality of notches, each notch being at least partially defined by two lugs disposed on opposite sides of the notch, the top portion also including a top edge that is disposed at each of the attachment lugs;
- and the bottom portion includes a bottom support edge that-extends circumferentially, wherein the top edge is angled with respect to the bottom support edge,
- wherein the base ring sheet body is formed into a substantially cylindrical configuration, defining a radial direction, an axial direction, and a circumferential direction, and including an outer cylindrical surface, and an inner cylindrical surface;
- wherein a surface area of each notch is defined by an area encompassed by a) a bottom notch edge, said bottom notch edge being parallel to the bottom support edge, b) a first lateral edge, c) a second lateral edge opposite said first lateral edge, d) a first blend transitioning from the first lateral edge to the bottom edge, e) a second blend transitioning from the bottom edge to the second lateral edge, and f) a theoretical top angled edge, wherein a total notch surface area is a sum of the surface areas of all notches,
- wherein a theoretical outer cylindrical surface area is defined by an area encompassed between the bottom support edge, and a theoretical length of said top portion, said theoretical length comprising the sum of all the top edges and all the theoretical top angled edges,
- wherein a ratio of the theoretical outer cylindrical surface area to the total notch surface area ranges from 2:1 to 3:1.
3 more elements
A coil subassembly for use with a heat exchanger of a pressure washer, the coil subassembly comprising:
- a length of heat exchange tubing including an inner coil and an outer coil;
- and a notched base ring attached to the length of heat exchange tubing;
- and the base ring includes a plurality of attachment lugs attached to the length of heat exchange tubing defining a plurality of notches configured to allow the flow of air, the notched base ring comprising:
- a base ring sheet body including a top portion, a bottom portion, wherein the top portion includes a plurality of attachment lugs and defines a plurality of notches, each notch being at least partially defined by two lugs disposed on opposite sides of the notch, the top portion also including a top edge that is disposed at each of the attachment lugs;
- and the bottom portion includes a bottom support edge, wherein the top edge is angled with respect to the bottom support,
- wherein the base ring sheet body is formed into a substantially cylindrical configuration, defining a radial direction, an axial direction, and a circumferential direction, and including an outer cylindrical surface, and an inner cylindrical surface;
- wherein a surface area of each notch is defined by an area encompassed by a) a bottom notch edge, said bottom notch edge being parallel to the bottom support edge, b) a first lateral edge, c) a second lateral edge opposite said first lateral edge, d) a first blend transitioning from the first lateral edge to the bottom edge, e) a second blend transitioning from the bottom edge to the second lateral edge, and f) a theoretical top angled edge, wherein a total notch surface area is a sum of the surface areas of all notches,
- wherein a theoretical outer cylindrical surface area is defined by an area encompassed between the bottom support edge, and a theoretical length of said top portion, said theoretical length comprising the sum of all the top edges and all the theoretical top angled edges,
- wherein a ratio of the theoretical outer cylindrical surface area to the total notch surface area ranges from 2:1 to 3:1.
6 more elements
A notched base ring for use with a heat exchanger of a pressure washer, the notched base ring comprising:
- a base ring sheet body including a top portion, a bottom portion, a first end connecting the top portion to the bottom portion, and a second end connecting the bottom portion to the top portion;
- the top portion includes a plurality of attachment lugs and defines a plurality of notches, each notch being at least partially defined by two lugs disposed on opposite sides of the notch, the top portion also including an angled top edge that is disposed at each of the attachment lugs;
- and the bottom portion includes a bottom support edge, wherein the top edge is angled with respect to the bottom support edge, wherein the base ring sheet body is formed into a substantially cylindrical configuration, defining a radial direction, an axial direction, and a circumferential direction, and including an outer cylindrical surface, an inner cylindrical surface, and wherein an attachment lug forms at least partially the first end of the base ring sheet body and another attachment lug forms at least partially the second end of the base ring sheet body;
- wherein a surface area of each notch is defined by an area encompassed by a) a bottom notch edge, said bottom notch edge being parallel to the bottom support edge, b) a first lateral edge, c) a second lateral edge opposite said first lateral edge, d) a first blend transitioning from the first lateral edge to the bottom edge, e) a second blend transitioning from the bottom edge to the second lateral edge, and f) a theoretical top angled edge, wherein a total notch surface area is a sum of the surface areas of all notches,
- wherein a theoretical outer cylindrical surface area is defined by an area encompassed between the bottom support edge, and a theoretical length of said top portion, said theoretical length comprising the sum of all the top edges and all the theoretical top angled edges,
- wherein a ratio of the theoretical outer cylindrical surface area to the total notch surface area ranges from 2:1 to 3:1.
3 more elements
Dependencies are inferred from the claim text.