The invention provides a heat-transfer-medium heating apparatus using a PTC heater and a vehicular air-conditioning apparatus using such a heating apparatus, which have superior heat-conducting properties and ease of assembly, which can improve the heating capacity, and which can ensure sufficient electrical insulation. Included are a PTC heater having a stacked construction in which an electrode plate, an incompressible insulating layer, and a compressible heat-conducting layer are sequentially provided on each side of a PTC element so as to sandwich the PTC element; and heat-transfer-medium circulating boxes, respectively disposed in close contact with the two surfaces of the PTC heater and having circulating channels for the heat-transfer-medium formed therein. The heat transfer medium circulating inside the heat-transfer-medium circulating boxes is heated by radiant heat from the two surfaces of the PTC heater.

Claims

10 · 1 independent · depth 3

10 granted claims

›1.independentA heat-transfer-medium heating apparatus comprising:na PTC heater having a stacked construction in which an electrode plate, an incompressible insulat…+9

›2.↳ 1A heat-transfer-medium heating apparatus according to claim 1, wherein the heat-transfer-medium circulating channels in the heat-transfer-medium circu…d2

›3.↳ 1A heat-transfer-medium heating apparatus according to claim 1, wherein the heat-generating components are disposed in contact with a portion that is c…d2

›4.↳ 1A heat-transfer-medium heating apparatus according to claim 1, wherein the compressible heat-conducting layers are formed of insulating material.d2+1

›5.↳ 1A heat-transfer-medium heating apparatus according to claim 1, wherein a surface area of the incompressible insulating layers is larger than a surface…d2+1

›8.↳ 1A heat-transfer-medium heating apparatus according to claim 1, wherein a plurality of the PTC elements is provided, which are configured to be control…d2

›9.↳ 1A vehicular air-conditioning apparatus comprising:na blower configured to circulate outside air or vehicle cabin air;a cooler provided at a downstream…d2

›10.↳ 1A heat-transfer-medium heating apparatus according to claim 1, wherein the PTC heater and the heat-transfer-medium circulating boxes are assembled in …d2

Classifications

4 codes

IPC · International Patent Classification

Section B — Performing operations; transporting

B60L1/02

Section H — Electricity

H05B3/78

USPC · US Patent Classification

219/202392/495

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Pendency

3.6 y

1,307 days filing → grant

Office actions

non-final + final

Responses

2 RCE

Examiner

Sang Y Paik

art unit 3742 · TC 3700

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Citations: 21 back · 0 forward

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Priority chain

1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20080053981 A1	6 Mar 2008

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