Ceiling air conditioner
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Solution Overview
Problem
Conventional ceiling air conditioners face issues with smooth air flow due to the absence of guide members, leading to static pressure loss, abnormal noise, and a surging phenomenon when the suction or discharge parts are blocked.
Innovation Solution
The ceiling air conditioner incorporates a cross-flow fan, a rear guide with protrusions on both side surfaces of the discharge part, and a suction flow path guide to ensure smooth air flow, minimize static pressure loss, and prevent surging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If no guide member is provided to guide air flow toward the heat exchanger, then the device structure is simple, but air flow in the suction path is not smooth
Solution Approach 1:
A suction path guide member is introduced as an intermediary component between the suction port and the heat exchanger. This guide member has a guide surface that actively directs air flow from the suction port toward the heat exchanger, ensuring smooth air flow without adding complex structures to the overall system.
2Device complexity
If no rear guide is provided to guide discharged air, then the device structure is simple, but static pressure loss occurs in the discharge path
Solution Approach 1:
A rear guide member is introduced as an intermediary component in the discharge path. This rear guide has a guide surface that actively directs discharged air from the heat exchanger toward the discharge port, preventing static pressure loss without requiring complex structural modifications.
3Adaptability or versatility
If the suction part or discharge part is blocked, then abnormal operating conditions occur, but the device lacks protection mechanism
Solution Approach 1:
The guide surfaces on both the suction path guide member and the rear guide member are designed to maintain effective air flow paths even under blocked conditions. By pre-configuring the guide surfaces to direct air flow efficiently, the system prevents surging phenomenon before it can occur, ensuring reliable operation during abnormal conditions without requiring additional protection mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables smooth air flow on both suction and discharge sides, reduces static pressure loss and abnormal noise, and ensures stable operation without surging, even when the suction part is blocked or the discharge part is closed.
Implementation Method 1
the air is heated or cooled through the phase change of the refrigerant flowing inside the heat exchanger
Implementation Method 2
the air passes through the heat exchanger. At this time, the air is heated or cooled through the phase change of the refrigerant flowing inside the heat exchanger
Implementation Method 3
the air that has passed through the heat exchanger is suctioned into a cross-flow fan, passes between a rear guide and stabilizer, and is finally re-introduced into the indoor space through the discharge part
Implementation Method 4
when cooling occurs, the air is cooled below a dew point, and moisture in the air is condensed in the heat exchanger to form condensate water
Data Source
AI summary
A ceiling air conditioner includes a cross-flow fan, a case defining an internal space in which the cross-flow fan is mounted, a front panel coupled to the case and having a suction part and a discharge part, a heat exchanger configured to exchange heat with air suctioned into the case and to partition the internal space into a suction flow path and a discharge flow path, a rear guide installed between the discharge part and the heat exchanger and configured to guide air which has passed through the heat exchanger to the discharge part, and protrusions including at least one protrusion surface and formed on both side surfaces or one side surface defining the discharge part or the discharge flow path to change a length of the discharge flow path in a first direction based on a air discharge direction.