Spray Nozzle Cooling Casing with Closed Fluid Line
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cooling devices for spray nozzles in thermal spraying processes have limited cooling capacity and can compromise safety and versatility, particularly in cold spray applications where direct heat dissipation is restricted.
Innovation Solution
A cooling device with a casing that forms a mating surface over a significant portion of the spray nozzle's length, using materials like copper for effective heat dissipation, and incorporating a closed cooling line within the casing to facilitate both liquid and gaseous cooling fluids, ensuring reliable and efficient heat transfer without compromising safety or versatility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a cooling device with a casing and mating surface is used for thermal spraying, then heat transfer efficiency is improved, but device complexity increases
Solution Approach 1:
The patent introduces a casing as an intermediary component between the spray nozzle and the cooling fluid. The casing with its mating surface directly contacts the nozzle, serving as a heat transfer mediator that conducts thermal energy from the nozzle to the cooling fluid circulating in the cooling line, thereby improving heat transfer efficiency while maintaining a relatively simple overall device structure.
Solution Approach 2:
The cooling line is nested within the casing, with the cooling line positioned inside the casing structure. This nested arrangement allows the cooling fluid to flow through channels within the casing that is already in thermal contact with the spray nozzle, enabling efficient heat transfer without adding significant external complexity to the device.
2Loss of energy
If liquid cooling fluid is used for indirect cooling, then cooling capacity is improved, but reliability decreases due to potential leaks
Solution Approach 1:
The casing serves as an intermediary barrier between the liquid cooling fluid and the external environment. By containing the liquid cooling fluid within the sealed casing structure that has thermal contact with the nozzle, the system achieves high cooling capacity while the casing itself acts as a protective mediator that prevents leaks and maintains reliability.
3Loss of energy
If the casing covers a substantial part of the spray nozzle, then heat dissipation is improved, but adaptability decreases
Solution Approach 1:
The casing is designed to cover only the specific portions of the spray nozzle that generate the most heat, rather than enclosing the entire nozzle. This localized approach concentrates cooling resources where they are most needed, improving heat dissipation efficiency while leaving other parts of the nozzle exposed, thereby maintaining adaptability for different application requirements.
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 provides enhanced cooling capacity with improved heat transfer efficiency, allowing for higher pressure gaseous fluids and reliable operation, while accommodating varying nozzle diameters and thermal expansion differences through a modular design and lining, ensuring effective cooling without compromising safety or versatility.
Implementation Method 1
direct heat transfer can take place between the material of the spray nozzle and the material of the casing
Implementation Method 2
a cooling line is provided in the casing, which has a closed cross section and connects the inlet to the outlet
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a cooling device for a spraying nozzle (12), in particular for cold gas spraying, and to a spraying nozzle assembly equipped with such a cooling device. The spraying nozzle (12) is surrounded by an enclosure (13) forming the cooling device, wherein it is provided according to the invention that a cooling line (19) within the enclosure forms a closed system which can be supplied with a cooling medium by way of an inlet (20) and an outlet (21). The cooling medium therefore advantageously does not come into contact with the spraying nozzle (12), which is inserted into a receiving opening in the enclosure by means of a loose fit (17). The closure may also advantageously taper conically towards the mouth (18) of the spraying nozzle (12), and therefore coatings can also be applied to difficultly accessible components by means of the spraying nozzle assembly (11) according to the invention.