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US 10,309,701 B2Granted
Heat exchanger and air conditioner
AssigneeDaikin Industries, Ltd.
InventorsKousuke Morimoto, Yoshio Oritani, Masanori Jindou, Tomohiko Sakamaki, Takuya Kazusa, Junichi Hamadate
Life of this patent
Estimating the term…
Abstract
In two heat exchange regions connected together in series when an outdoor heat exchanger functions as an evaporator, a downstream one of the heat exchange regions has heat exchange sections not less than heat exchange sections of an upstream one of the heat exchange regions, and a most downstream one of the heat exchange regions has more heat exchange sections than a most upstream one of the heat exchange regions.
Claims10
A heat exchanger comprising:
- at least one heat exchanger unit including a plurality of vertically arranged flat tubes, fins joined to the flat tubes,
- a first header collection pipe connected to one end of each of the plurality of flat tubes, and
- a second header collection pipe connected to the other end of each of the plurality of flat tubes,
- the heat exchanger unit being divided into a plurality of vertically arranged heat exchange regions, and the plurality of heat exchange regions being connected in series when the heat exchanger functions as an evaporator,
- the heat exchanger allowing a refrigerant flowing through the plurality of flat tubes and air to exchange heat, wherein
- each of the heat exchange regions is further divided into a plurality of vertically arranged heat exchange sections in which flows of the refrigerant run in the same direction, each heat exchange section including two or more of the plurality of flat tubes,
- communicating spaces each communicating with the two or more of the plurality of flat tubes are formed in each of the first and second header collection pipes in a one-to-one relationship with the heat exchange sections,
- partition plates are arranged in each of the first and second header collection pipes to partition each communicating space, which is located upstream of an associated one of the heat exchange sections when the heat exchanger functions as an evaporator, from other vertically adjacent communicating space,
- when the heat exchanger functions as an evaporator, a most upstream one of the heat exchange regions has less flat tubes in each heat exchange section than the flat tubes in each heat exchange section of a most downstream one of the heat exchange regions,
- in two of the heat exchange regions connected to each other when the heat exchanger functions as an evaporator, a downstream one of the heat exchange regions has the heat exchange sections not less than the heat exchange sections of an upstream one of the heat exchange regions, and a most downstream one of the heat exchange regions has more heat exchange sections than a most upstream one of the heat exchange regions,
- in two of the heat exchange regions connected to each other when the heat exchanger functions as the evaporator, the communicating spaces of the heat exchange sections of the upstream one of the heat exchange regions are respectively connected to different communicating spaces, or different sets of two or more communicating spaces, of the heat exchange sections of the downstream one of the heat exchange regions, and
- the heat exchange section having the largest number of the flat tubes is arranged at a lowest position in each of the heat exchange regions.
9 more elements
A heat exchanger comprising:
- at least one heat exchanger unit including a plurality of vertically arranged flat tubes, fins joined to the flat tubes, and
- a header collection pipe connected to an end of each of the plurality of flat tubes,
- the heat exchanger unit being divided into a plurality of vertically arranged heat exchange regions, and the plurality of heat exchange regions being connected in series when the heat exchanger functions as an evaporator,
- the heat exchanger allowing a refrigerant flowing through the plurality of flat tubes and air to exchange heat, wherein
- each of the heat exchange regions is further divided into a plurality of vertically arranged heat exchange sections in which flows of the refrigerant run in the same direction, each heat exchange section including two or more of the plurality of flat tubes,
- communicating spaces each communicating with the two or more of the plurality of flat tubes are formed in the header collection pipe in a one-to-one relationship with the heat exchange sections,
- when the heat exchanger functions as an evaporator, a most upstream one of the heat exchange regions has less flat tubes in each heat exchange section than the flat tubes in each heat exchange section of a most downstream one of the heat exchange regions,
- partition plates are arranged in the header collection pipe to partition each communicating space, which is located upstream of an associated one of the heat exchange sections when the heat exchanger functions as an evaporator, from other vertically adjacent communicating space,
- in two of the heat exchange regions connected to each other when the heat exchanger functions as an evaporator, a downstream one of the heat exchange regions has the heat exchange sections not less than the heat exchange sections of an upstream one of the heat exchange regions, and a most downstream one of the heat exchange regions has more heat exchange sections than a most upstream one of the heat exchange regions,
- in two of the heat exchange regions connected to each other when the heat exchanger functions as the evaporator, the communicating spaces of the heat exchange sections of the upstream one of the heat exchange regions are respectively connected to different communicating spaces, or different sets of two or more communicating spaces, of the heat exchange sections of the downstream one of the heat exchange regions,
- the heat exchange section having the largest number of the flat tubes is arranged at a lowest position in each of the heat exchange regions.
8 more elements
Dependencies are inferred from the claim text.