An electrical heating device comprises a housing which encloses a circulation chamber through which a medium can flow, and into which heating ribs protrude. Each of the heating ribs has a U-shaped recess which open into a uniform connecting chamber, which is separated from the circulation chamber by
An electrical heating device comprises a housing which encloses a circulation chamber through which a medium can flow, and into which heating ribs protrude. Each of the heating ribs has a U-shaped recess which open into a uniform connecting chamber, which is separated from the circulation chamber by a partition wall provided in the region of the open ends of the U-shaped recesses, and which accommodates at least one PTC heating element that abuts oppositely situated inner sides of the U-shaped recess in heat-conducting contact. A housing cover bears a pump and forms a pump channel. The pump channel opens into an inlet opening of the pump, which is formed by a pump housing.
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1. An electrical heating device for a motor-vehicle, comprising: a housing which encloses a circulation chamber through which a medium can flow, and into which heating ribs protrude, each of the heating ribs having a U-shaped recess which open into a uniform connecting chamber which is separated fro
1. An electrical heating device for a motor-vehicle, comprising: a housing which encloses a circulation chamber through which a medium can flow, and into which heating ribs protrude, each of the heating ribs having a U-shaped recess which open into a uniform connecting chamber which is separated from the circulation chamber by a partition wall provided in a region of open ends of the U-shaped recesses, wherein the housing accommodates at least one PTC heating element which abuts oppositely situated inner sides of the U-shaped recess in heat-conducting contact, and further comprising a pump and a housing cover which bears the pump, wherein a pump channel is formed by a hollow space within an interior of the housing cover, the hollow space running along a length of the housing cover, the pump channel opening into an inlet opening of the pump, the inlet opening of the pump being formed by a pump housing. 2. An electrical heating device according to claim 1 wherein a covering element is clamped between the housing and the housing cover, wherein the covering element separates a flow channel, formed between the partition wall and the covering element in the circulation chamber, from the pump channel, and wherein the covering element has a flow passage aperture formed therein, through which the flow channel communicates with the pump channel. 3. An electrical heating device according to claim 1, wherein, on an underside of the heating ribs, tapered supporting ridges form a support level for a covering element. 4. An electrical heating device according to claim 1, wherein the heating ribs protrude inwards alternately from oppositely situated inner sides of the housing such that a flow channel in the housing is formed in a meandering manner and comprises flow passages between free ends of the heating ribs and an adjacent inner wall of the housing. 5. An electrical heating device according to claim 1, wherein the heating ribs are connected through a ridge to an assigned inner wall of the housing, and wherein the ridge is less thick than the heating ribs. 6. An electrical heating device according to claim 5, wherein lateral faces of the ridge that are exposed to a flow channel are formed concave, so that a hollow-shaped recess is formed between an inner wall and a heating rib. 7. An electrical heating device according to claim 1, further comprising: a connecting conductor board, extending parallel to the partition wall and held in the connecting chamber with conductive paths and with electrical connecting elements which make contact with contact lugs of the PTC heating elements protruding over the partition wall; andan assembled conductor board which extends at right angles to the connecting conductor board in front of a face side of the housing. 8. An electrical heating device according to claim 7, wherein, on the face side of the housing, the housing has a housing connection opening which opens to the connecting chamber and in which a plug housing is inserted, wherein electrical plug elements of the plug housing are connected to plug counter elements provided on the connecting conductor board or on the assembled conductor board. 9. An electrical heating device according to claim 7, wherein the assembled conductor board is provided with spacing to the face side of the housing and bears at least one component which produces a power loss, and wherein, between the face side of the housing and the assembled conductor board, a cooling element thermally couples the at least one component which produces a power loss to the face side of the housing. 10. An electrical heating device according to claim 7, wherein the assembled conductor board also bears components of a control device for the pump. 11. An electrical heating device according to claim 2, wherein the housing, on a face side, bears a connection piece, which communicates with the flow channel, and wherein the flow channel aperture is situated at the opposite end of the connection piece. 12. An electrical heating device according to claim 11, wherein the pump housing and the housing each bear a connection piece. 13. An electrical heating device according to claim 1, wherein the housing cover and at least parts of the pump housing are formed from one block. 14. An electrical heating device according to claim 8, further comprising a control housing which encloses the assembled conductor board and which forms a control housing connection opening corresponding to the housing connection opening, wherein a further control housing connection opening, which in relation to a level accommodating a covering element, is formed mirrored on the control housing in relation to the level accommodating the covering element. 15. An electrical heating device for a motor-vehicle comprising: a housing which encloses a circulation chamber through which a medium can flow;heating ribs that protrude into the circulation chamber, each of the heating ribs having a U-shaped recess which open into a uniform connecting chamber which is separated from the circulation chamber by a partition wall provided in the region of open ends of the U-shaped recesses;at least one PTC heating element which is held in the housing and which abuts oppositely situated inner sides of the U-shaped recess in heat-conducting contact therewith;a pump; anda housing cover which bears the pump,wherein a pump channel is formed by a hollow space within an interior of the housing cover, the hollow space running along a length of the housing cover, the pump channel opening into an inlet opening of the pump, the inlet opening of the pump being formed by a pump housing.
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이 특허에 인용된 특허 (3)
Kemp ; Jr. David M. (Naperville IL) Jones Hartl R. (Bensenville IL), Liquid distribution trough.
Pierron, Frederic; Puzenat, Bertrand; Leborgne, Jose, Device for electrically heating fluid for a motor vehicle, and related heating and/or air-conditioning apparatus.
Leborgne, Jose; Ma, Zhenxia; Pierron, Frederic; Tellier, Laurent, Device for thermally conditioning fluid for a motor vehicle and corresponding heating and/or air conditioning apparatus.
Pierron, Frederic; Tellier, Laurent; Leborgne, Jose, Electrical heating device for a motor vehicle, and associated heating, ventilation and/or air conditioning apparatus.
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