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A self-cleaning rotisserie oven includes a cooking cabinet comprising an internal bottom wall, an internal top wall and internal side walls thereby defining a cooking chamber. A self-cleaning system is provided for cleaning the cooking chamber. A convection system includes a heating element and vent

A self-cleaning rotisserie oven includes a cooking cabinet comprising an internal bottom wall, an internal top wall and internal side walls thereby defining a cooking chamber. A self-cleaning system is provided for cleaning the cooking chamber. A convection system includes a heating element and ventilation system configured to heat the cooking chamber. The ventilation system includes a motor, a fan including a fan shaft connected to the motor such that the motor drives the fan and a bushing including a central channel that receives the fan shaft. The central channel includes an inner surface having a variable inner diameter along an axial length of the bushing such that a first portion of the inner surface is near the fan shaft and a second portion of the inner surface is further from the fan shaft than the first portion.

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1. A self-cleaning rotisserie oven, comprising: a cooking cabinet comprising an internal bottom wall, an internal top wall and internal side walls thereby defining a cooking chamber;a self-cleaning system for cleaning the cooking chamber; anda convection system including a heating element and ventil

1. A self-cleaning rotisserie oven, comprising: a cooking cabinet comprising an internal bottom wall, an internal top wall and internal side walls thereby defining a cooking chamber;a self-cleaning system for cleaning the cooking chamber; anda convection system including a heating element and ventilation system configured to heat the cooking chamber, the ventilation system including: a motor;a fan including a fan shaft having a first end connected to the motor and a protruding end connected to the fan such that the motor drives the fan; anda bushing including a central channel that receives the fan shaft, the central channel including an inner surface having a variable inner diameter along an axial length of the bushing such that a first portion of the inner surface is near the fan shaft and a second portion of the inner surface is spaced apart from and further from the fan shaft than the first portion, the second portion positioned toward the protruding end of the fan shaft and the first portion positioned toward the first end. 2. The self-cleaning rotisserie oven of claim 1, wherein the bushing includes a threaded outer surface that is threaded into a nut member welded to a fan support, the fan support located above the internal top wall of the cooking chamber. 3. The self-cleaning rotisserie oven of claim 2, wherein the bushing extends through an opening of the internal top wall of the cooking chamber. 4. The self-cleaning rotisserie oven of claim 3, wherein the bushing includes a radially extending flange having a dimension greater than that of the opening in the internal top wall, the flange seating against a cooking chamber facing surface of the internal top wall. 5. The self-cleaning rotisserie oven of claim 4, wherein the central channel includes: a lower cylindrical region defining the second portion, the lower cylindrical region having a substantially constant diameter along its axial length;a close-fit cylindrical region defining the first portion, the close-fit cylindrical portion having a substantially constant diameter along its axial length, the diameter of the close-fit cylindrical region being less than the diameter of the lower cylindrical region; anda frusto-conical region of varying diameter, a first end of the frusto-conical region having a diameter substantially the same as the diameter of the close-fit cylindrical region and a second, opposite end of the frusto-conical region having a diameter substantially the same as the diameter of the lower cylindrical region. 6. The self-cleaning rotisserie oven of claim 5 further comprising an upper cylindrical region located above the close-fit cylindrical region and having a diameter greater than that of the close-fit cylindrical region. 7. The self-cleaning rotisserie oven of claim 6 further comprising an o-ring seal located about the fan shaft, the o-ring seal seated against a seating surface of the bushing within the upper cylindrical region, the o-ring connected to the fan shaft such that it rotates with the fan shaft. 8. The self-cleaning rotisserie oven of claim 4 further comprising a static o-ring seal located between the flange and the top wall of the oven chamber. 9. The self-cleaning rotisserie oven of claim 2, wherein the motor is supported by the fan support, the fan support having an opening through which the fan shaft extends. 10. A self-cleaning rotisserie oven, comprising: a cooking cabinet comprising an internal bottom wall, an internal top wall and internal side walls thereby defining a cooking chamber;a rotor located in the cooking chamber;a self-cleaning system for cleaning the cooking chamber;a fan motor located on a fan support located above the internal top wall of the cooking chamber;a fan including a fan shaft connected to the motor such that the motor drives the fan, the fan shaft extending through an opening in the fan support and an opening in the top wall;a nut member attached to a cooking chamber facing surface of the fan support, the nut member having an opening extending therethrough aligned with the opening in the fan support such that the fan shaft passes through the opening in the nut member; anda bushing threadably connected to the nut member and having a channel through which the fan shaft passes, the bushing extending through the opening in the top wall and including a radially extending flange located adjacent an oven chamber facing surface of the top wall and wherein the said bushing includes a central channel that receives the fan shaft, the central channel including an inner surface having a variable inner diameter along an axial length of the bushing such that a first portion of the inner surface is near the fan shaft and a second portion of the inner surface is further from the fan shaft than the first portion. 11. The self-cleaning rotisserie oven of claim 10, wherein the central channel includes: a lower cylindrical region defining the second portion, the lower cylindrical region having a substantially constant diameter along its axial length;a close-fit cylindrical region defining the first portion, the close-fit cylindrical portion having a substantially constant diameter along its axial length, the diameter of the close-fit cylindrical region being less than the diameter of the lower cylindrical region; anda frusto-conical region of varying diameter, a first end of the frusto-conical region having a diameter substantially the same as the diameter of the close-fit cylindrical region and a second, opposite end of the frusto-conical region having a diameter substantially the same as the diameter of the lower cylindrical region. 12. The self-cleaning rotisserie oven of claim 11 further comprising an upper cylindrical region located above the close-fit cylindrical region and having a diameter greater than that of the close-fit cylindrical region. 13. The self-cleaning rotisserie oven of claim 12 further comprising an o-ring seal located about the fan shaft, the o-ring seal seated against a seating surface of the bushing within the upper cylindrical region, the o-ring connected to the fan shaft such that it rotates with the fan shaft. 14. The self-cleaning rotisserie oven of claim 10, wherein the radially extending flange has a dimension greater than the opening in the top wall, the flange seating against a cooking chamber facing surface of the internal top wall. 15. The self-cleaning rotisserie oven of claim 14 further comprising a static o-ring seal located between the flange and the top wall of the oven chamber. 16. A method of inhibiting leak along a fan shaft within a self-cleaning rotisserie oven including a cooking cabinet comprising an internal bottom wall, an internal top wall and internal side walls thereby defining a cooking chamber, a rotor located in the cooking chamber and a self-cleaning system for cleaning the cooking chamber, the method comprising: supporting a fan motor on a fan support located above the internal top wall of the cooking chamber, a fan shaft operatively connected to the fan motor, the fan shaft extending through an opening in the fan support and through an opening in the top wall;locating the fan shaft within a channel in a bushing; andinserting the bushing through the opening in the top wall by moving the bushing along an axis of the fan shaft, the channel of the bushing including an inner surface having a variable inner diameter along an axial length of the bushing such that a first portion of the inner surface is near the fan shaft and a second portion of the inner surface is further from the fan shaft than the first portion,connecting the bushing to the fan support by threading the bushing into a nut member connected to the fan support, andplacing an o-ring seal in an upper recess of the bushing and locating the fan shaft within an opening in the o-ring seal, the o-ring seal being seated in the upper recess such that moving the bushing along the axis of the fan shaft moves the o-ring seal along the fan shaft to a position along the fan shaft. 17. A self-cleaning rotisserie oven, comprising: a cooking cabinet comprising an internal bottom wall, an internal top wall and internal side walls thereby defining a cooking chamber;a self-cleaning system for cleaning the cooking chamber; anda convection system including a heating element and ventilation system configured to heat the cooking chamber, the ventilation system including: a motor;a fan including a fan shaft having connected to the motor such that the motor drives the fan; anda bushing including a central channel that receives the fan shaft, the central channel including an inner surface having a variable inner diameter along an axial length of the bushing such that a first portion of the inner surface is near the fan shaft and a second portion of the inner surface is further from the fan shaft than the first portion wherein the central channel includes:a lower cylindrical region defining the second portion, the lower cylindrical region having a substantially constant diameter along its axial length;a close-fit cylindrical region defining the first portion, the close-fit cylindrical portion having a substantially constant diameter along its axial length, the diameter of the close-fit cylindrical region being less than the diameter of the lower cylindrical region; anda frusto-conical region of varying diameter, a first end of the frusto-conical region having a diameter substantially the same as the diameter of the close-fit cylindrical region and a second, opposite end of the frusto-conical region having a diameter substantially the same as the diameter of the lower cylindrical region.