Gear pump for use in an electrically-operated sealed compressor

A gear pump for use in an electrically-operated sealed horizontal compressor including a compression mechanism, an electric motor for driving the compression mechanism, and a crankshaft for transmitting a rotational force of the electric motor to the compression mechanism, said gear pump comprising:

• a first gear connected to an end of the compressor crankshaft;
• a second gear in mesh with said first gear;
• a cover plate for covering said first gear and said second gear;
• a cup-shaped pump cover mounted on said cover plate;
• and
• an oil suction nozzle secured to said pump cover such that said cover plate is interposed between said oil suction nozzle and said first and second gear;
• wherein said oil suction nozzle is an independent member;
• and
• wherein at least one of said pump cover and said oil suction nozzle is formed of a resin.

A gear pump in an electrically-operated sealed horizontal compressor, comprising:

• a compression mechanism;
• an electric motor for driving said compression mechanism;
• a horizontal crankshaft for transmitting a rotational force of said electric motor to said compression mechanism;
• and
• a gear pump, wherein said gear pump includes:
• a first gear connected to an end of said horizontal crankshaft;
• a second gear in mesh with said first gear;
• a cover plate for covering said first gear and said second gear;
• a cup-shaped pump cover mounted on said cover plate;
• and
• an oil suction nozzle secured to said pump cover such that said cover plate is interposed between said oil suction nozzle and said first and second gear;
• wherein said oil suction nozzle is an independent member;
• and
• wherein at least one of said pump cover and said oil suction nozzle is formed of a resin.

A gear pump for use in an electrically-operated sealed horizontal compressor including a compression mechanism, an electric motor for driving the compression mechanism, and a crankshaft for transmitting a rotational force of the electric motor to the compression mechanism, said gear pump comprising:

• a first gear connected to an end of the compressor crankshaft;
• a second gear in mesh with said first gear;
• a cover plate for covering said first gear and said second gear;
• a foreign substance storage portion defined as a portion for storing foreign substances therein;
• and
• a pump cover mounted on said cover plate, wherein said foreign substance storage portion is provided in said pump cover;
• and
• a strainer interposed between said foreign substance storage portion and said cover plate such that said strainer captures foreign substances contained in oil;
• wherein said foreign substance storage portion is provided such that said cover plate is interposed between said foreign substance storage portion and said first and second gear.

A gear pump in an electrically-operated sealed horizontal compressor, comprising:

• a compression mechanism;
• an electric motor for driving said compression mechanism;
• a horizontal crankshaft for transmitting a rotational force of said electric motor to said compression mechanism;
• and
• a gear pump, wherein said gear pump includes;
• a first gear connected to an end of said horizontal crankshaft;
• a second gear in mesh with said first gear;
• a cover plate for covering said first gear and said second gear;
• a cup-shaped pump cover mounted on said cover plate;
• and
• an oil suction nozzle secured to said pump cover such that said cover plate is interposed between said oil suction nozzle and said first and second gear;
• wherein said oil suction nozzle is an independent member;
• and
• wherein said pump cover includes a foreign substance storage portion.

A gear pump for use in an electrically-operated sealed horizontal compressor including a compression mechanism, an electric motor for driving the compression mechanism, and a crankshaft for transmitting a rotational force of the electric motor to the compression mechanism, said gear pump comprising:

• a first gear connected to an end of the compressor crankshaft;
• a second gear in mesh with said first gear;
• a cover plate for covering said first gear and said second gear;
• a cup-shaped pump cover mounted on said cover plate;
• and
• an oil suction nozzle secured to said pump cover such that said cover plate is interposed between said oil suction nozzle and said first and second gear;
• wherein said oil suction nozzle is an independent member;
• and
• wherein said pump cover includes a connection opening having an inwardly projecting lip portion, said oil suction nozzle having an end inserted in said connection opening of said pump cover such that said end of said oil suction nozzle is held in tight contact with said inwardly projecting lip portion of said pump cover.

A gear pump for use in an electrically-operated sealed horizontal compressor including a compression mechanism, an electric motor for driving the compression mechanism, and a crankshaft for transmitting a rotational force of the electric motor to the compression mechanism, said gear pump comprising:

• a first gear connected to an end of the compressor crankshaft;
• a second gear in mesh with said first gear;
• a cover plate for covering said first gear and said second gear;
• a foreign substance storage portion defined as a portion for storing foreign substances therein;
• a pump cover mounted on said cover plate wherein said foreign substance storage portion is provided in said pump cover;
• and
• an oil suction nozzle secured to said pump cover such that said cover plate is interposed between said oil suction nozzle and said first and second gear;
• wherein said foreign substance storage portion is provided such that said cover plate is interposed between said foreign substance storage portion and said first and second gear;
• and
• wherein said pump cover includes a connection opening having an inwardly projecting lip portion, said oil suction nozzle having an end inserted in said connection opening of said pump cover such that said end of said oil suction nozzle is held in tight contact with said inwardly projecting lip portion of said pump cover.

A gear pump for use in an electrically-operated sealed horizontal compressor including a compression mechanism, an electric motor for driving the compression mechanism, and a crankshaft for transmitting a rotational force of the electric motor to the compression mechanism, said gear pump comprising:

• a first gear connected to an end of the compressor crankshaft;
• a second gear in mesh with said first gear;
• a cover plate for covering said first gear and said second gear;
• a pump cover mounted on said cover plate;
• an oil storage portion formed by said cover plate and said pump cover;
• and
• an oil suction nozzle secured to said pump cover such that said cover plate is interposed between said oil suction nozzle and said first and second gear;
• wherein said pump cover includes a connection opening having an inwardly projecting lip portion, said oil suction nozzle having an end inserted in said connection opening of said pump cover such that said end of said oil suction nozzle is held in tight contact with said inwardly projecting lip portion of said pump cover.

A gear pump in an electrically-operated sealed horizontal compressor, comprising:

• a compression mechanism;
• an electric motor for driving said compression mechanism;
• a horizontal crankshaft for transmitting a rotational force of said electric motor to said compression mechanism;
• and
• a gear pump, wherein said gear pump includes:
• a first gear connected to an end of said horizontal crankshaft;
• a second gear in mesh with said first gear;
• a cover plate for covering said first gear and said second gear;
• a cup-shaped pump cover mounted on said cover plate;
• an oil suction nozzle secured to said pump cover such that said cover plate is interposed between said oil suction nozzle and said first and second gear;
• and
• wherein said oil suction nozzle is an independent member;
• and
• wherein said pump cover includes a connection opening having an inwardly projecting lip portion, said oil suction nozzle having an end inserted in said connection opening of said pump cover such that said end of said oil suction nozzle is held in tight contact with said inwardly projecting lip portion of said pump cover.