Outdoor unit for air conditioning device
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Solution Overview
Problem
Conventional outdoor units for air conditioning devices require high power to inject air and water simultaneously through spray nozzles, which can lead to inadequate power reduction and corrosion of the heat exchanger due to water droplets.
Innovation Solution
The outdoor unit employs a spray nozzle with an air guide portion, a water guide portion, and a bubble formation portion that creates fine water drops with a large number of bubbles, which are sprayed downward to evaporate before reaching the heat exchanger, reducing power consumption and preventing corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a conventional two-fluid spray nozzle is used to inject air and water simultaneously, then fine droplets are created for cooling, but large power is required to inject air at high speeds
Solution Approach 1:
The invention extracts the air injection function from the spray nozzle system. Instead of using a two-fluid nozzle that requires high-speed air injection, the patent uses a simple water spray nozzle combined with a separate air blowing device positioned downstream to blow air toward the heat exchanger, thereby eliminating the need for high-power air injection through the nozzle
Solution Approach 2:
The invention segments the cooling system into separate functional components: a water spray nozzle for water delivery, a downstream air blowing device for air injection, and a positioning mechanism. This segmentation allows each component to operate independently at lower power requirements while achieving the same cooling effect
2Power
If water is sprayed to the heat exchanger for auxiliary cooling, then power consumption is reduced, but water droplets adhere to the heat exchanger causing corrosion
Solution Approach 1:
The invention applies preliminary action by positioning the air blowing device downstream of the spray nozzle to blow air toward the heat exchanger before water droplets can adhere. This pre-established air flow creates a protective barrier that prevents water droplet adhesion and subsequent corrosion
Solution Approach 2:
The invention converts the potentially harmful effect of water spray into a beneficial outcome. By using the spray water for evaporative cooling while simultaneously using air flow to prevent adhesion, the system transforms what could be corrosive water accumulation into a protective evaporative cooling mechanism that eliminates corrosion risk
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
This configuration effectively reduces the power required for air conditioning devices while preventing heat exchanger corrosion by ensuring water drops evaporate before reaching the heat exchanger, enhancing cooling performance and reducing energy consumption.
Implementation Method 1
spraying water to air flowing toward the heat exchanger... water which contains a large number of bubbles... sprays to the outside the water formed in the water guide portion and containing a large number of bubbles... water drops evaporate before reaching the heat exchanger
Data Source
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AI summary
A spray nozzle (21) of an outdoor unit (11) is provided with: an air guide portion (30) through which air flows; a water guide portion (40) through which water flows and which causes the air flowing through the air guide portion (30) to flow into water to form water containing a large number of bubbles; and a spray portion (51) that is located downstream of the water guide portion (40) in a direction of water flow and sprays, to the outside, the water containing a large number of bubbles which is formed in the water guide portion (40).