Back to results
US 2024/0410601 A1Published application
Compressor and air conditioner
AssigneeDaikin Industries, Ltd.
InventorsTatsuya KATAYAMA, Daiki KIKUTAKE
Life of this patent
Estimating the term…
Abstract
A compressor includes a casing having a cylindrical shape and end plates at both ends, a compression mechanism housed in the casing, and a muffler disposed between a fluid outlet of the compression mechanism and a space in the casing. A size of the casing or the muffler is set so that in an entire range of a first resonance mode in which a resonance frequency changes as an oil level of lubricant oil stored in the casing changes, the resonance frequency of the first resonance mode is different from a resonance frequency of a second resonance mode in which the resonance frequency does not change as the oil level of the lubricant oil changes.
Claims15
A compressor comprising:
- a casing having a cylindrical shape and end plates at both ends;
- a compression mechanism housed in the casing;
- and
- a muffler disposed between a fluid outlet of the compression mechanism and a space in the casing,
- a size of the casing or the muffler being set so that in an entire range of a first resonance mode in which a resonance frequency changes as an oil level of lubricant oil stored in the casing changes, the resonance frequency of the first resonance mode is different from a resonance frequency of a second resonance mode in which the resonance frequency does not change as the oil level of the lubricant oil changes.
2 more elements
An air conditioner comprising:
- a refrigerant circuit configured to perform a vapor compression refrigeration cycle,
- a compressor of the refrigerant circuit including
- a casing having a cylindrical shape and end plates at both ends,
- a compression mechanism housed in the casing, and
- a muffler disposed between a fluid outlet of the compression mechanism and a space in the casing,
- the compressor having
- a first resonance mode in which a resonance frequency changes as an oil level of lubricant oil stored in the casing changes and
- a second resonance mode in which the resonance frequency does not change as the oil level of lubricant oil stored in the casing changes, and
- the resonance frequency of the first resonance mode is lower than the resonance frequency of the second resonance mode at an oil level at which lubricant oil in the refrigerant circuit is collected in the compressor.
6 more elements
An air conditioner comprising:
- a refrigerant circuit configured to perform a vapor compression refrigeration cycle, wherein
- a compressor of the refrigerant circuit including
- a casing having a cylindrical shape and end plates at both ends,
- a compression mechanism housed in the casing, and
- a muffler disposed between a fluid outlet of the compression mechanism and a space in the casing,
- the compressor having
- a first resonance mode in which a resonance frequency changes as an oil level of lubricant oil stored in the casing changes and
- a second resonance mode in which the resonance frequency does not change as the oil level of lubricant oil stored in the casing changes, and
- the air conditioner being configured to operate to control an oil level of the compressor so that the resonance frequency of the first resonance mode is lower than the resonance frequency of the second resonance mode at all times during a steady operation in an entire operation range.
6 more elements
An air conditioner comprising:
- a refrigerant circuit configured to perform a vapor compression refrigeration cycle,
- a compressor of the refrigerant circuit including
- a casing having a cylindrical shape and end plates at both ends,
- a compression mechanism housed in the casing, and
- a muffler disposed between a fluid outlet of the compression mechanism and a space in the casing,
- the compressor having
- a first resonance mode in which a resonance frequency changes as an oil level of lubricant oil stored in the casing changes and
- a second resonance mode in which the resonance frequency does not change as the oil level of lubricant oil stored in the casing changes, and
- the air conditioner being configured to operate to control an oil level of the compressor so that the resonance frequency of the first resonance mode is higher than the resonance frequency of the second resonance mode at all times during a steady operation in an entire operation range.
6 more elements
An air conditioner comprising:
- a refrigerant circuit configured to perform a vapor compression refrigeration cycle,
- a compressor of the refrigerant circuit including
- a casing having a cylindrical shape and end plates at both ends,
- a compression mechanism housed in the casing, and
- a muffler disposed between a fluid outlet of the compression mechanism and a space in the casing,
- the compressor having
- a first resonance mode in which a resonance frequency changes as an oil level of lubricant oil stored in the casing changes and
- a second resonance mode in which the resonance frequency does not change as the oil level of lubricant oil stored in the casing changes, and
- the air conditioner being configured to avoid an operation of the compressor and not perform a steady operation at a point at which the resonance frequencies of the first resonance mode and the second resonance mode match each other.
6 more elements
Dependencies are inferred from the claim text.