Air conditioning device
The air conditioning device stabilizes heat exchange capacity by controlling outdoor fan speed in response to changes in outdoor heat exchanger usage, addressing noise and reliability issues for improved comfort.
AU2023385438B2Pending Publication Date: 2026-07-09FUJITSU GENERAL LTD
Patent Information
- Application Number
- AU2023385438
- Authority / Receiving Office
- AU · AU
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2022-11-25
- Filing Date
- 2023-11-10
- Publication Date
- 2026-07-09
AI Technical Summary
Technical Problem
Existing air conditioning devices with multiple outdoor heat exchangers experience frequent changes in capacity due to varying air conditioning loads, leading to noise, reliability issues, and unstable temperature control, which deteriorate comfort.
Method used
An air conditioning device that controls the rotation speed of an outdoor fan to maintain consistent heat exchange capacity when adding or removing outdoor heat exchangers, using a control device to adjust fan speed based on heat exchange amounts to stabilize performance.
Benefits of technology
Reduces noise and improves reliability by stabilizing heat exchange capacity, ensuring consistent comfort levels despite changes in air conditioning load.
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Smart Images
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Abstract
An air conditioner according to one embodiment of the present invention comprises: an outdoor unit including a plurality of outdoor heat exchangers and an outdoor fan that blows air to the plurality of outdoor heat exchangers; at least one indoor unit connected to the outdoor unit by refrigerant piping; and a control device that controls the rotation speed of the outdoor fan. When the number of outdoor heat exchangers in use is increased, the control device determines the rotation speed of the outdoor fan so that the amount of heat exchanged in the outdoor heat exchangers after the number thereof is increased is equal to or less than the amount of heat exchanged in the outdoor heat exchanger before the number thereof is increased, and when the number of outdoor heat exchangers in use is decreased, the control device determines the rotation speed of the outdoor fan so that the amount of heat exchanged in the outdoor heat exchangers after the number thereof is decreased is equal to or larger than the amount of heat exchanged in the outdoor heat exchanger before the number thereof is decreased.
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Citation Information
Patent Citations
Air conditioner
JP2014016097A