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US 9,541,090 B2Granted
Heat circulation pump
AssigneeGrundfos Management A/S
InventorFinn Mathiesen Høj
Life of this patent
Estimating the term…
Abstract
A heat circulation pump includes a pump housing (1) with a pump impeller arranged therein which is arranged in a motor housing (8) which is axially flange-mounted on the pump housing (1). The heat circulation pump also includes a terminal box (12) which is axially connected to the motor housing (8) in order to house electric and/or electronic components of the engine control and for electrically connecting the motor. The terminal box (12) protrudes, radially at least in sections, from the terminal box side end of the motor housing (8) and the terminal box has, in the axial direction, a right-angled outer contour with recesses (20) in the corner areas which are arranged in the axial extension of the screws (11). The flange (10) of the motor housing (8) are fixed to the pump housing (1) by the screws.
Claims20
A heating circulation pump comprising:
- a pump housing;
- a pump impeller arranged in the pump housing;
- a motor housing with a flange;
- an electric motor arranged in the motor housing, the pump impeller being driven by the electric motor and the motor housing being axially flanged onto the pump housing;
- screws fastening the flange of the motor housing on the pump housing;
- and
- a terminal box which connects axially onto the motor housing, for receiving electrical and/or electronic components for the motor control and for the electrical connection of the motor, wherein the terminal box at least in sections projects radially beyond the motor housing which is on the terminal box side, and the terminal box has an outer contour which is rectangular in an axial direction and said terminal box has recesses in corner regions, said recesses being arranged in a region of an axial extension of the screws, wherein the terminal box, in a terminal box region projecting radially beyond the motor housing, comprises a fastening means, with which the terminal box is fastened on the motor housing, the fastening means comprising snap connections which engage over the motor housing in a radial and an axial manner, wherein flange recesses are provided in a region of the flange of the motor housing, into which snap projections engage, said snap projections being arranged on tongues which extend from the radially protruding parts of the terminal box in the axial direction along the motor housing and are integrally formed on the terminal box on the sides of contact feed-throughs.
4 more elements
A heating circulation pump comprising:
- a pump housing;
- a pump impeller arranged in the pump housing;
- a motor housing comprising a flange and a motor housing interior space;
- an electric motor arranged in the motor housing, the pump impeller being driven by the electric motor;
- screws fastening the flange of the motor housing to the pump housing, said flange comprising a plurality of flange recesses and snap projection receiving recesses, said plurality of flange recesses and snap projection receiving recesses being provided on the flange;
- and
- a terminal box which connects axially onto the motor housing, for receiving electrical and/or electronic components for the motor control and for the electrical connection of the motor, and the terminal box has an outer contour which is rectangular in an axial direction and the terminal box has terminal box recesses in corner regions thereof, said terminal box comprising a terminal box interior space, each of said terminal box recesses being aligned with one of said flange recesses, said terminal box comprising a plurality of snap projections in a terminal box region projecting radially beyond the motor housing, each of said snap projection receiving recesses receiving at least a portion of one of said snap projections, whereby said terminal box is connected to said motor housing, wherein said snap projections and said snap receiving recesses are located external to said terminal box interior space and said motor housing interior space, wherein each of said flange recesses is arranged adjacent to one of said snap projection receiving recesses, said snap projections being arranged on tongues which extend from the radially protruding parts of the terminal box in the axial direction along the motor housing and are integrally formed on the terminal box on the sides of contact feed-throughs.
4 more elements
A heating circulation pump comprising:
- a pump housing;
- a pump impeller arranged in the pump housing;
- a motor housing comprising a flange;
- an electric motor arranged in the motor housing, the pump impeller being driven by the electric motor;
- screws fastening the flange of the motor housing to the pump housing, said flange comprising a plurality of flange recesses and a plurality of snap projection receiving recesses, each of said snap projection receiving recesses being arranged adjacent to an outer periphery of said motor housing, said snap projection receiving recesses being arranged on said flange;
- and
- a terminal box which connects axially onto the motor housing, for receiving electrical and/or electronic components for the motor control and for the electrical connection of the motor, and the terminal box has an outer contour which is rectangular in an axial direction and the terminal box has terminal box recesses in corner regions thereof, each of said terminal box recesses being aligned with one of said flange recesses, said terminal box comprising a plurality of snap projections in a terminal box region projecting radially beyond the motor housing, each of said snap projection receiving recesses receiving at least a portion of one of said snap projections, whereby said terminal box is connected to said motor housing, wherein each of said flange recesses is adjacent to one of said snap projection receiving recesses, said snap projections comprising tongues which extend from radially protruding parts of the terminal box in the axial direction along the motor housing and are integrally formed on the terminal box on the sides of contact feed-throughs.
4 more elements
Dependencies are inferred from the claim text.