Vehicular air-conditioning apparatus
First Claim
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1. A vehicular air-conditioning apparatus comprising:
- an air-conditioning duct for allowing passage of air-conditioning air therethrough;
a hot-water heater, disposed within the air-conditioning duct, for heating the air-conditioning air by using engine-cooling water;
an electric heater, disposed downstream of the hot-water heater, for electrically heating the air-conditioning air;
a bypass passage for allowing the air-conditioning air flowing past the hot-water heater to bypass the electric heater;
a bypass door for selectively opening and closing the bypass passage; and
,a controller for controlling the bypass door such that the bypass door is closed only when;
a mode of discharge of the air-conditioning air from the air-conditioning duct is one of a heater mode and a heater-defroster mode; and
,a target temperature of the air-conditioning air discharged from the air-conditioning duct is equal to or higher than a predetermined air temperature or a temperature of the engine-cooling water is equal to or lower than a predetermined water temperature.
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Abstract
A vehicular air-conditioning apparatus includes a hot-water heater and an electric heater provided downstream of the hot-water heater. The apparatus also includes a bypass passage for allowing air-conditioning air flowing past the hot-water heater to bypass the electric heater and a bypass door provided in the bypass passage for opening and closing the bypass passage.
15 Citations
1 Claim
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1. A vehicular air-conditioning apparatus comprising:
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an air-conditioning duct for allowing passage of air-conditioning air therethrough; a hot-water heater, disposed within the air-conditioning duct, for heating the air-conditioning air by using engine-cooling water; an electric heater, disposed downstream of the hot-water heater, for electrically heating the air-conditioning air; a bypass passage for allowing the air-conditioning air flowing past the hot-water heater to bypass the electric heater; a bypass door for selectively opening and closing the bypass passage; and
,a controller for controlling the bypass door such that the bypass door is closed only when; a mode of discharge of the air-conditioning air from the air-conditioning duct is one of a heater mode and a heater-defroster mode; and
,a target temperature of the air-conditioning air discharged from the air-conditioning duct is equal to or higher than a predetermined air temperature or a temperature of the engine-cooling water is equal to or lower than a predetermined water temperature.
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Specification
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Current AssigneeHonda Motor Co., Ltd. (Honda Motor Company)
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Original AssigneeHonda Motor Co., Ltd. (Honda Motor Company)
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InventorsFujiki, Tsutomu, Hakamada, Hitoshi
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Primary Examiner(s)Ford; John K.
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Application NumberUS11/259,699Publication NumberTime in Patent Office580 DaysField of Search165/297, 165/41, 165/42, 165/43, 165/202, 165/204, 237/12.3 R, 237/12.3 B, 237/12.3 A, 219/202, 454/159, 454/160, 454/161US Class Current165/202CPC Class CodesB60H 1/0005 the air being firstly coole...B60H 1/034 from the cooling liquid of ...B60H 2001/00128 Electric heatersB60H 2001/00164 with more than one by-passG05D 23/1932 to control the temperature ...
