Vehicle heater
AssigneeEberspächer Climate Control Systems GmbH & Co. KG
InventorsMichael Humburg, Hans Jensen
Life of this patent
Estimating the term…
Abstract
A vehicle heater includes a heater housing (12), through which heating air to be heated can flow, with a heating air inlet area and with a heating air outlet area. A burner unit is arranged in the heater housing. A combustion air blower is arranged in the heater housing for feeding combustion air to the burner unit. A heat exchanger unit is arranged in the heater housing (12). Heating air flowing through the heater housing (12) can flow around the heat exchanger unit. A combustion air intake muffler (76), which is essentially arranged in the heater housing (12), is associated with the combustion air blower (46).
Claims14
A vehicle heater comprising:
- a heater housing, through which heating air to be heated flows, with a heating air inlet area and with a heating air outlet area;
- a burner unit arranged in the heater housing;
- a combustion air blower arranged in the heater housing for feeding combustion air to the burner unit;
- a heat exchanger unit arranged in the heater housing and around which heating air flowing through the heater housing flows;
- and
- a combustion air intake muffler arranged in the heater housing and associated with the combustion air blower, wherein the combustion air intake muffler comprises a first muffler flow path leading combustion air from a combustion air inlet area of the combustion air blower in one axial direction, which is opposite another axial direction, away from an axial side of the blower body and a second muffler flow path leading combustion air in the another axial direction to the feed duct inlet area, the combustion air intake muffler comprising a muffler housing, which is arranged on the axial side of the blower body and is connected to the blower body, the first muffler flow path and the second muffler flow path being formed in the muffler housing, wherein a muffling body made of a muffling material is arranged in the muffler housing, the first muffler flow path and the second muffler flow path being formed in the muffling body, the first muffler flow path and the second muffler flow path extending parallel to the axis of rotation, the first muffler flow path being arranged radially outside of the second muffler flow path.
A combustion air blower, for a vehicle heater, the combustion air blower comprising:
- a blower body with a feed duct, which feed duct extends with a ring pattern about an axis of rotation and is open on a first axial side of the blower body in a first axial direction;
- a combustion air feed wheel located opposite the blower body on a first axial side, with a ring pattern feed area overlapping the feed duct and with a plurality of feed blades following one another in a circumferential direction about the axis of rotation;
- a blower motor arranged on a second axial side of the blower body, which second axial side is opposite the first axial side of the blower body, and with a motor shaft rotatable about the axis of rotation, the motor shaft being coupled to the combustion air feed wheel for joint rotation about the axis of rotation;
- a feed duct inlet area open towards the feed duct and in the blower body for the inlet of combustion air into the feed duct;
- and
- a combustion air intake muffler arranged on the second axial side of the blower body, the combustion air intake muffler comprising a muffler housing, which is arranged on the second axial side of the blower body and is connected to the blower body, wherein a first muffler flow path and a second muffler flow path are formed in the muffler housing, wherein a muffling body made of a muffling material is arranged in the muffler housing, the first muffler flow path and the second muffler flow path being formed in the muffling body.
Dependencies are inferred from the claim text.