| 摘要 |
A new space heater is disclosed. A casing (12) contains a heat source (1) and includes openings (16,17) which allow the convection of air through the casing (12). The heat source (1) comprises a pair of panels (2, 3) defining between them a closed oil-filled compartment in which an electrical heating element is retained. The openings in the casing (12) allow radiant heat from the heat source (1) to escape from the casing. Because the heat source (1) is contained within the casing (12), it may be heated to very high temperatures. To accommodate the oil expansion, the oil only partially fills the compartment in the heat source and the compartment is subdivided into a lower liquid chamber (8), which at room temperature contains oil, and an enlarged upper expansion chamber (7) which at room temperature contains no oil.
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