Air compressor with improved noise reduction performance

Patent metadata

Field	Value
Publication number	US-10087919-B2
Application number	US-201314423725-A
Country	US
Kind code	B2
Filing date	Sep 19, 2013
Priority date	Sep 26, 2012
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

Provided is a compressor as a device which can solve a contradictory technical problem of installing an intake sound muffler while downsizing the device under a circumstance that installation of the intake sound muffler is indispensable to reduce intake noise of the compressor, and the compressor comprises: a first lid part provided with a small hole which forms an intake port of the compressor, the lid part constituting a portion of a cylindrical casing of the compressor; a cylindrical part; and a second lid part which forms a small chamber together with the first lid part, wherein the second lid part is provided with a suction nozzle for sucking air into the small chamber.

First claim

The invention claimed is:

1. A compressor comprising:
a first lid part provided with a first intake port which forms an intake port of the compressor, the lid part constituting a portion of a cylindrical casing of the compressor;
a cylindrical part; and
a second lid part which forms a chamber together with the first lid part and the cylindrical part,
wherein the cylindrical part is provided with a second intake port, and the second intake port is connected to a suction nozzle for sucking air into the chamber,
wherein the second intake port is designed in such a way that the first intake port and the second intake port are arranged so that air flow has an angle of 90°,
wherein a filter is installed in the chamber to divide the chamber into a compressor intake port side and the suction nozzle side,
wherein the compressor is a reciprocating compressor and the casing is a cylindrical crank case, and
wherein the compressor does not include a resonance muffler.

2. The compressor according to claim 1 , wherein the suction nozzle has a length of 100 mm to 150 mm.

3. The compressor according to claim 1 , wherein the chamber has a diameter which is 5 to 10 times of a diameter of each intake port.

4. A compressor consisting of:
a cylindrical crank case;
a motor;
a cylinder which is provided with an exhaust valve;
a piston which is housed in the cylinder and which is provided with an intake valve;
a crank part which is housed in the cylindrical crank case and which is connected to the motor and to the piston to convert a rotational motion of the motor to a reciprocating motion of the piston;
a first lid part provided with a first intake port which forms an intake port of the compressor, the lid part constituting a portion of the cylindrical crank case of the compressor;
a cylindrical part; and
a second lid part which forms a chamber together with the first lid part and the cylindrical part,
wherein the cylindrical part is provided with a second intake port, and the second intake port is connected to a suction nozzle for sucking air into the chamber,
wherein the second intake port is designed in such a way that the first intake port and the second intake port are arranged so that air flow has an angle of 90°,
wherein a filter is installed in the chamber to divide the chamber into a compressor intake port side and the suction nozzle side.

5. The compressor according to claim 4 , wherein the suction nozzle has a length of 100 mm to 150 mm.

6. The compressor according to claim 4 , wherein the chamber has a diameter which is 5 to 10 times of a diameter of each intake port.

7. A compressor consisting essentially of:
a first lid part provided with a first intake port which forms an intake port of the compressor, the lid part constituting a portion of a cylindrical casing of the compressor;
a cylindrical part; and
a second lid part which forms a chamber together with the first lid part and the cylindrical part,
wherein the cylindrical part is provided with a second intake port, and the second intake port is connected to a suction nozzle for sucking air into the chamber,
wherein the second intake port is designed in such a way that the first intake port and the second intake port are arranged so that air flow has an angle of 90°,
wherein a filter is installed in the chamber to divide the chamber into a compressor intake port side and the suction nozzle side,
wherein the compressor is a reciprocating compressor and the casing is a cylindrical crank case.

8. The compressor according to claim 7 , wherein the suction nozzle has a length of 100 mm to 150 mm.

9. The compressor according to claim 7 , wherein the chamber has a diameter which is 5 to 10 times of a diameter of each intake port.

Assignees

• Teijin Pharma Ltd

Inventors

• Ito Shinichi
• Nawata Hideo

Classifications

• F04B39/0055

  with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes · CPC title

• F04B39/16

  Filtration; Moisture separation · CPC title

• F04B35/01

  the means being mechanical · CPC title

• A61M16/107

  in the inspiratory path · CPC title

• F04B39/0061 Primary

  using muffler volumes · CPC title