Driving apparatus, industrial instrument, exposure apparatus, and device manufacturing method
First Claim
1. A driving apparatus which electrically drives first and second components built in an industrial instrument, the first component being configured to drive a first element, and the second component being configured to drive a second element at a velocity higher than that of the first component, the driving apparatus comprising:
- a housing including a supply inlet and an exhaust outlet;
a fan configured to form an air current so that air is taken into said housing through said supply inlet and exhausted from inside said housing through said exhaust outlet;
a driving circuit block which is accommodated in said housing so as to be cooled by the air current, and which includes a first driving circuit configured to electrically drive the first component, and a second driving circuit configured to electrically drive the second component, wherein said second driving circuit is inserted upstream of said first driving circuit along the air current in said housing; and
a cooling unit configured to regulate a temperature of the air exhausted from inside said housing through said exhaust outlet so as to decrease a temperature difference between the air taken into said housing through said supply inlet and the air exhausted from inside said housing through said exhaust outlet.
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Accused Products
Abstract
A driving apparatus electrically drives first and second components built in an industrial instrument. The first component drives a first element, and the second component drives a second element at a velocity higher than that of the first component. The driving apparatus includes a housing including a supply inlet and an exhaust outlet. A fan forms an air current so that air is taken into the housing through the supply inlet and is exhausted from inside the housing through the exhaust outlet. A driving circuit block is accommodated in the housing so as to be cooled by the air current, and includes a first driving circuit to electrically drive the first component, and a second driving circuit to electrically drive the second component. The second driving circuit is inserted upstream of the first driving circuit along the air current in the housing. A cooling unit regulates a temperature of the air exhausted from inside the housing through the exhaust outlet so as to decrease a temperature difference between the air taken into the housing through the supply inlet and the air exhausted from inside the housing through the exhaust outlet.
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Citations
9 Claims
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1. A driving apparatus which electrically drives first and second components built in an industrial instrument, the first component being configured to drive a first element, and the second component being configured to drive a second element at a velocity higher than that of the first component, the driving apparatus comprising:
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a housing including a supply inlet and an exhaust outlet; a fan configured to form an air current so that air is taken into said housing through said supply inlet and exhausted from inside said housing through said exhaust outlet; a driving circuit block which is accommodated in said housing so as to be cooled by the air current, and which includes a first driving circuit configured to electrically drive the first component, and a second driving circuit configured to electrically drive the second component, wherein said second driving circuit is inserted upstream of said first driving circuit along the air current in said housing; and a cooling unit configured to regulate a temperature of the air exhausted from inside said housing through said exhaust outlet so as to decrease a temperature difference between the air taken into said housing through said supply inlet and the air exhausted from inside said housing through said exhaust outlet. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An industrial instrument including first and second components and a driving apparatus which electrically drives the first and second components, the first component being configured to drive a second element at a velocity higher than that of the first component,
wherein the driving apparatus comprises: -
(i) a housing including a supply inlet and an exhaust outlet; (ii) a fan configured to form an air current so that air is taken into said housing through said supply inlet and exhausted from inside said housing through said exhaust outlet; (iii) a driving circuit block which is accommodated in said housing so as to be cooled by the air current, and which includes a first driving circuit configured to electrically drive the first component, and a second diving circuit configured to electrically drive the second component, wherein said second driving circuit is inserted upstream of said first driving circuit along the air current in said housing; and (iv) a cooling unit configured to regulate a temperature of the air exhausted from inside said housing through said exhaust outlet so as to decrease a temperature difference between the air taken into said housing through said supply inlet and the air exhausted from inside said housing through said exhaust outlet.
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8. An exposure apparatus including an exposure unit which projects a pattern of an original held by an original stage onto a substrate held by a substrate stage to expose the substrate to light, and a driving apparatus which drives first and second components of the exposure unit, the first component being configured to drive a first element of the exposure unit, and the second component being configured to drive a second element of the exposure unit at a velocity higher than that of the first component,
wherein the driving apparatus comprises: -
(i) a housing including a supply inlet and an exhaust outlet; (ii) a fan configured to form an air current so that air is taken into said housing through said supply inlet and exhausted from inside said housing through said exhaust outlet; (iii) a driving circuit block which is accommodated in said housing so as to be cooled by the air current, and which includes a first driving circuit configured to electrically drive the first component, and a second driving circuit configured to electrically drive the second component, wherein said second driving circuit is inserted upstream of said first driving circuit along the air current in said housing; and (iv) a cooling unit configured to regulate a temperature of the air exhausted from inside said housing through said exhaust outlet so as to decrease a temperature difference between the air taken into said housing through said supply inlet and the air exhausted from inside said housing through said exhaust outlet.
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9. A device manufacturing method comprising the steps of:
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(A) exposing a substrate to light by an exposure apparatus; and (B) developing the substrate exposed in the exposing step, wherein the exposure apparatus includes (a) an exposure unit which projects a pattern of an original held by an original stage onto a substrate held by a substrate stag;
to expose the substrate to light, and (b) a driving apparatus which drives first and second components of the exposure unit, the first component being configured to drive a first element, and the second component being configured to drive a second element at a velocity higher than that of the first component, andthe driving apparatus comprises; (i) a housing including a supply inlet and an exhaust outlet; (ii) a fan configured to form an air current so that air is taken into said housing through said supply inlet and exhausted from inside said housing through said exhaust outlet; (iii) a driving circuit block which is accommodated in said housing so as to be cooled by the air current, and which includes a first driving circuit configured to electrically drive the first component, and a second driving circuit configured to electrically drive the second component, wherein said second driving circuit is inserted upstream of said first driving circuit along the air current in said housing; and (iv) a cooling unit configured to regulate a temperature of the air exhausted from inside said housing through said exhaust outlet so as to decrease a temperature difference between the air taken into said housing through said supply inlet and the air exhausted from inside said housing through said exhaust outlet.
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Specification