Refrigerant Compressor Discharge Pipe Thermal Isolation
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Solution Overview
Problem
Existing refrigerant compressors face challenges in reducing heat transfer between the discharge pipe and the compressor shell, which leads to inefficient operation and potential damage from high temperatures.
Innovation Solution
The design incorporates a first connector element as an intermediate element between the discharge pipe and the compressor shell, reducing heat transfer by allowing heat dissipation from the connector element and using a plastic connection sleeve that is not damaged by heat during hermetic connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the discharge pipe is directly connected to the compressor shell, then the hermetic connection is simple and reliable, but heat transfer from the discharge pipe to the compressor shell is excessive causing overheating
Solution Approach 1:
A connector element is introduced as an intermediary component between the discharge pipe and the compressor shell. This connector includes a connection portion that hermetically connects to the discharge pipe and a distancing portion that extends into the compressor shell, creating thermal isolation. The intermediary structure allows hermetic sealing while preventing excessive heat transfer to the compressor shell.
2Temperature
If a plastic connection sleeve is used to connect the discharge pipe, then heat transfer is reduced and the sleeve is not damaged by heat, but the hermetic connection becomes more complex
Solution Approach 1:
The connector element is made from plastic material that combines thermal insulation properties with hermetic sealing capability. The plastic material allows the connector to resist heat damage while maintaining structural integrity and hermetic connection, eliminating the need for metal-to-plastic thermal management complexity.
3Volume of moving object
If the discharge pipe is positioned close to the compressor shell, then the device structure is compact, but heat dissipation is insufficient leading to overheating
Solution Approach 1:
The connector element extends in the axial direction into the compressor shell, utilizing the available axial space rather than increasing radial dimensions. This dimensional approach allows heat dissipation through the connector structure without compromising the compact overall volume of the compressor.
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 solution effectively reduces heat transfer between the discharge pipe and the compressor shell, preventing overheating and improving the efficiency and reliability of the refrigerant compressor.
Implementation Method 1
a plurality of support spring assemblies for supporting the compressor body in the compressor shell
Implementation Method 2
the cylinder head assembly comprising a valve plate, a suction valve spring, a discharge valve spring
Data Source
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AI summary
The invention relates to an encapsulated refrigerant compressor (1) having - a compressor shell (100), wherein a discharge pipe (20) enters the compressor shell (100); - a pump unit (10) comprising: -- a cranktrain having a crankshaft, a crank pin, a connecting rod and a piston; -- an electric drive unit having a stator and a rotor; -- a crankcase with a cylinder housing; -- a cylinder head assembly mounted to the cylinder housing of the crankcase, the cylinder head assembly comprising a discharge muffler, wherein the discharge muffler has a discharge connection tube being connected to the discharge pipe. In order to provide an improved connection of discharge pipe and discharge connection tube, the discharge pipe (20) is connected to the compressor shell (100) via a first connector element (70) and a connection sleeve (760) is mounted on a second end section of the discharge connection tube (750) and the connection sleeve (760) is inserted into a receiving section (21) of the discharge pipe (20), which receiving section (21) extends from a discharge pipe connection section (72) of the first connector element (70) inwards.