IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0579168
(1984-02-10)
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발명자
/ 주소 |
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대리인 / 주소 |
Rogers, Howell, Moore & Haferkamp
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인용정보 |
피인용 횟수 :
5 인용 특허 :
1 |
초록
▼
A hydraulically actuated vacuum street sweeper (2) of the motorized vehicular type includes a vacuum system (12) with a vacuum blower (14) for suctioning debris, and a cooling system (50) utilizing otherwise wasted exhaust air from the blower for cooling hydraulic oil. Hydraulic conduit (52) is in t
A hydraulically actuated vacuum street sweeper (2) of the motorized vehicular type includes a vacuum system (12) with a vacuum blower (14) for suctioning debris, and a cooling system (50) utilizing otherwise wasted exhaust air from the blower for cooling hydraulic oil. Hydraulic conduit (52) is in the exhaust path of the vacuum blower and cooled by exhaust air from the latter.
대표청구항
▼
1. In a vacuum street sweeper having at least one hydraulically driven component, a vacuum system with an exhaust section, the exhaust section including a compartment, a vacuum blower housed in the compartment for suctioning air carrying debris and dust, and an exhaust port from the compartment serv
1. In a vacuum street sweeper having at least one hydraulically driven component, a vacuum system with an exhaust section, the exhaust section including a compartment, a vacuum blower housed in the compartment for suctioning air carrying debris and dust, and an exhaust port from the compartment serving as an outlet for air to the atmosphere, filter means immediately upstream of the exhaust port for filtering air prior to its passage through the exhaust port, hydraulic oil conduit means, means for mounting the hydraulic oil conduit means adjacent and upstream of the filter means for utilizing otherwise wasted exhaust air from said blower for cooling hydraulic oil prior to passage of the air through the filter means. 2. In a hydraulically actuated vacuum street sweeper having a vacuum system with a vacuum blower for suctioning debris, means for utilizing otherwise wasted exhaust air from said blower for cooling hydraulic oil, said means comprising a cooling system including hydraulic conduit means in the exhaust path of said vacuum blower and cooled by exhaust air from the latter, said vacuum system having an exhaust section including a compartment, said compartment having an exhaust port and housing said blower and said conduit means, said conduit means being disposed in the exhaust air flow path between said blower and said exhaust port, such that the harder said sweeper works and the faster said blower runs, the more air flows across said conduit means for cooling, said exhaust port being formed in a given wall of said compartment; said conduit means being bent in a planar serpentine manner and being parallel to and adjacent said exhaust port; and said blower being mounted in said given wall of said compartment laterally spaced from said conduit means and exhaust port, to afford a flat compact exhaust section compartment. 3. A hydraulically actuated vacuum street sweeper comprising: a hopper for receiving debris, the hopper having an inlet port and an outlet port; a vacuum system for suctioning debris and depositing same in said hopper, comprising: an intake section upstream of said hopper for suctioning debris and transmitting said debris to the inlet port in said hopper; and an enclosed exhaust section downstream of said hopper and in communication with the outlet port for suctioning air carrying dust and the like from the outlet port in said hopper, the exhaust section including an upper wall, an exhaust port in the upper wall of the exhaust section for discharging air from the exhaust section; a hydraulically driven vacuum blower in said exhaust section between the outlet port and the exhaust port for providing said suctioning; hydraulic conduit means for conveying hydraulic fluid to the blower, and for supporting the hydraulic conduit means in said exhaust section beneath the exhaust port for cooling the hydraulic fluid by exhaust air from said blower; said hopper inlet port being in a side wall of said hopper; said hopper outlet port being in a top wall of said hopper; said exhaust section comprises a compartment above said hopper; and said blower being in a top wall of said compartment above said hopper outlet port. 4. A hydraulically actuated vacuum street sweeper comprising: a hopper for receiving debris having an inlet port in a side wall of said hopper and an outlet port in a top wall of said hopper, a vacuum system for suctioning debris and depositing same in said hopper, including: an intake section upstream of said hopper for suctioning debris and transmitting the debris to the inlet port in said hopper; an exhaust section downstream of said hopper for suctioning air carrying dust and the like from the inlet port in said hopper, the exhaust section having an exhaust port to the atmosphere, the exhaust section having an inlet communicating with the outlet port, and the exhaust section including a compartment above the hopper, a vacuum blower in the exhaust section for providing suctioning, the blower being between the exhaust section inlet and the exhaust port, the blower being in a top wall of the compartment above the hopper outlet port, said exhaust port being in said top wall of said compartment laterally spaced from said blower; and hydraulic conduit means in the exhaust section cooled by exhaust air from the blower, the hydraulic conduit means being between the blower and the exhaust port, said hydraulic conduit means being beneath said exhaust port. 5. The street sweeper according to claim 4, wherein said hydraulic conduit means is bent in a planar serpentine manner and is parallel to said top wall of said compartment. 6. The street sweeper according to claim 3, comprising: an initial coarse filter screen in said hopper separating said inlet port and said outlet port such that debris entering said inlet port is blocked from reaching said outlet port and settles in said hopper; and wherein exhaust air from said blower directly impinges said hydraulic conduit means without intermediate filtering, to maximize exhaust cooling power. 7. A hydraulically actuated vacuum street sweeper comprising: a hopper for receiving debris and having an inlet port in a side wall thereof and an outlet port in a top wall thereof; an initial coarse filter screen in said hopper separating said inlet and outlet ports, such that debris entering said inlet port is blocked from reaching said outlet port and settles in said hopper, said initial coarse filter screen permitting the passage of dust and the like therethrough to minimize reduction of vacuum power; a vacuum system for suctioning debris from the street and depositing same in said hopper, and for suctioning dust and the like from said hopper, comprising: an intake section upstream of said hopper for suctioning debris and transmitting said debris to said hopper inlet port; and an exhaust section downstream of said hopper for suctioning dust and the like from said hopper outlet port, and including a flat compartment above said hopper having an inlet from said hopper outlet port and having an outlet to the atmosphere through an exhaust port in the top wall of said compartment; a vacuum blower in said exhaust section, providing said suctioning, mounted in said top wall of said compartment above said hopper outlet port laterally spaced from said exhaust port in said top wall of said compartment such that said blower is between said exhaust section compartment inlet and said exhaust port; and hydraulic conduit means in said exhaust section compartment beneath said exhaust port, between said blower and said exhaust port, and cooled by exhaust air from said blower. 8. The street sweeper according to claim 4 including cross bar members affixed to the hydraulic conduit means to support the hydraulic conduit means. 9. In a hydraulically actuated vacuum street sweeper having a vacuum system including a hopper having an inlet port and an outlet port for receiving debris, an exhaust section in communication with the hopper downstream thereof, the exhaust section including a compartment with an exhaust port, an inlet to the compartment in communication with the hopper outlet port, exhaust filter means extending substantially across the exhaust port, a vacuum blower within the compartment for suctioning air and debris into the hopper inlet, and means for utilizing exhaust air from the blower for cooling hydraulic fluid comprising hydraulic conduit means disposed adjacent the exhaust filter means in the path of the exhaust air. 10. In a hydraulically actuated vacuum street sweeper having a vacuum system including an exhaust section, a compartment having top, bottom, and side walls, a vacuum blower within the compartment for suctioning debris, an exhaust port through a wall of the compartment, a cooling system including hydraulic conduit means within the compartment between the vacuum blower and the exhaust port such that the harder the sweeper works and the faster the blower runs, the more air flows across the conduit means for cooling, the blower being spaced laterally from the conduit means and exhaust port, to afford a flat compact compartment.
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