Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
1999-07-07
2001-06-12
Ramirez, Nestor (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S054000, C310S057000, C310S058000, C310S059000, C310S062000, C310S064000
Reexamination Certificate
active
06246134
ABSTRACT:
FIELD OF THE INVENTION
This invention is related to the power generation industry and, more particularly, to the field of electrical power generators.
BACKGROUND OF THE INVENTION
In the power generation industry, air is often used to cool electrical power generators. The systems that are currently provided are generally classified as either open air cooled (OAC) systems or totally enclosed water to air cooled (TEWAC) systems. The OAC system can experience numerous problems. For example, air surrounding the OAC system which is used to cool the power generator can be contaminated or otherwise not as clean as desired. Accordingly, these OAC systems can require one or more filters which add to the cost, maintenance, and complexity of the system. Additionally, OAC systems can be quite noisy. The TEWAC systems, on the other hand, are quite complex and expensive. For example, these TEWAC systems often require another water-to-air cooler to cool the water used in the TEWAC system. These water-to-air coolers also use ambient air to cool the water before it is re-circulated through the generator cooler.
SUMMARY OF THE INVENTION
In view of the foregoing, the present invention advantageously provides an apparatus and method for cooling electrical power generators without the use of ambient air which can be contaminated or quite dirty in some environments. The present invention also advantageously provides an apparatus and method for applying a totally enclosed air-to-air cooler to an electrical power generator which is significantly less complex and less expensive. The present invention further advantageously provides an apparatus and method to cool air-cooled power generators which is significantly less noisy than open air cooled systems and do not require extensive air filters which can be required by open air systems.
More particularly, an apparatus for applying totally enclosed air-to-air cooler (“TEAAC”) to a power generator is provided. The apparatus preferably includes a housing, a power generator positioned in the housing so that at least an interstitial space is formed between inner walls of the housing and outer surfaces of the electrical power generator, and air-to-air heat transferring means positioned in fluid communication with air in contact with the power generator and in the interstitial space within the housing for receiving heated air from the power generator and transferringly supplying cooled air thereto.
The air-to-air heat transferring means can advantageously include a heat transfer device having a body, a first plurality of air flow passageways formed in the body to allow relatively hot air received from the power generator to be cooled to flow therethrough in a first predetermined direction, and a second and separate plurality of air flow passageways formed in the body to allow relatively cooler air received from outside of the housing to be heated to flow therethrough in a second predetermined direction without contact or mixing with the relatively hot air.
The present invention also advantageously provides a method for cooling a power generator. The method preferably includes receiving heated air from a power generator positioned within a housing, transferringly cooling the received heated air with cooler air received within the same housing from outside the same housing without mixing the received outside cooler air with the received inside heated air, and supplying cooled air to contact the power generator to thereby cool the power generator.
REFERENCES:
patent: 4071791 (1978-01-01), Armor et al.
patent: 4306165 (1981-12-01), Kitabayashi et al.
patent: 4348604 (1982-09-01), Thode
patent: 4508986 (1985-04-01), Vandamme
patent: 4754179 (1988-06-01), Capuano et al.
patent: 4807354 (1989-02-01), Capuano et al.
patent: 5449036 (1995-09-01), Genge et al.
patent: 5629573 (1997-05-01), Ponnappan et al.
patent: 5844333 (1998-12-01), Sheerin
patent: 22 50 969 (1977-04-01), None
patent: 2256574 (1973-12-01), None
patent: 2087540A (1981-06-01), None
Berrong David
Paris Calvin
Lam Thanh
Ramirez Nestor
Siemens Westinghouse Power Corporation
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