Refrigerant Compressor Cylinder Head Hood Protection
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Solution Overview
Problem
There is a need to protect the cylinder head of refrigerant compressors from external influences, and existing protective measures such as protective layers are not effective in providing lasting protection.
Innovation Solution
A hood is used to cover the cylinder head, with a hood cover engaging over the cylinder head upper part and a hood skirt surrounding the cylinder head, along with a sealing body made of an elastically deformable material to create a permanent seal between the hood and the cylinder head.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective layer is applied to the cylinder head, then the cylinder head is protected against external influences, but the protective layer is susceptible to mechanical effects and does not provide lasting protection
Solution Approach 1:
The patent applies a flexible protective hood made of elastomeric or polymeric material that can deform elastically to accommodate the cylinder head geometry. This flexible shell provides comprehensive protection against mechanical effects and external influences while maintaining lasting protection through its elastic recovery and adherence to the cylinder head surface.
Solution Approach 2:
The protective hood is constructed from composite materials combining elastomeric or polymeric substances that offer both flexibility and durable protection. These composite materials provide resistance to mechanical effects while maintaining long-term protection through their elastic properties and bonding to the cylinder head.
2Reliability
If a hood is used to cover the cylinder head, then optimal protection is achieved, but the device complexity increases with additional components like hood cover, hood skirt, and sealing body
Solution Approach 1:
The protective hood is divided into distinct segments including a hood cover for the upper part, a hood skirt for the peripheral side, and an integrated sealing body. This segmentation allows each component to be optimized for its specific function while collectively providing comprehensive protection. The modular structure facilitates easier manufacturing and assembly despite the increased number of components.
Solution Approach 2:
The sealing body is merged with the hood structure, integrating the sealing function into the protective hood assembly rather than requiring separate sealing components. This merging reduces the overall number of discrete parts while maintaining effective sealing between the hood and cylinder head, thereby reducing assembly complexity.
3Reliability
If a sealing body is added between the hood skirt and cylinder head, then permanent sealing is achieved, but the manufacturing precision requirements increase
Solution Approach 1:
The sealing body is designed with specific material parameters, using elastomeric or polymeric materials that can deform elastically to accommodate variations in manufacturing precision. This parameter change allows the sealing body to adapt to slight misalignments and dimensional variations, achieving reliable sealing without requiring extremely tight manufacturing tolerances on the hood and cylinder head interfaces.
Solution Approach 2:
The sealing body is constructed as a flexible element that can deform elastically to conform to the mating surfaces. This flexibility compensates for manufacturing variations and alignment imperfections, achieving permanent sealing without demanding high manufacturing precision. The elastomeric or polymeric material naturally adapts to the interface geometry, ensuring effective sealing.
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 hood provides optimal protection for the cylinder head against external influences, preventing corrosion and ensuring the longevity of the compressor components.
Implementation Method 1
the sealing body is made of an elastically deformable material and that the sealing body is elastically deformed between the hood skirt and the peripheral side of the cylinder head by being compressed between them
Data Source
AI summary
A refrigerant compressor, includes an overall housing with a motor housing portion and a compressor housing portion, which has a cylinder housing with a cylinder head. The cylinder head has a cylinder head lower part arranged on the cylinder housing and a cylinder head upper part which closes off the cylinder head and has at least one outlet chamber integrated in the cylinder head upper part, in such a way that it is possible to provide optimal protection for the cylinder head. The cylinder head is covered by a hood which engages over the cylinder head upper part on an upper side facing away from the cylinder head lower part with a hood cover and over the cylinder head in the region of its peripheral side with a hood skirt surrounding the cylinder head.