Vacuum pump servicing adapter, service unit for a vehicle air conditioning system and method for servicing a vacuum pump of a service unit
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Solution Overview
Problem
Existing vehicle air conditioning system service units face challenges in accurately and efficiently servicing vacuum pumps due to the need for different types and amounts of vacuum pump oil, leading to potential errors and time-consuming manual procedures, and inadequate ventilation during refrigerant exchange.
Innovation Solution
A vacuum pump servicing adapter with a connection element and ventilation element that allows for quick and reliable draining and refilling of vacuum pump oil, featuring check valves for controlled oil and ventilation, and a design that enables servicing without opening the service unit housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the housing of the service unit is opened to service the vacuum pump, then the vacuum pump oil can be exchanged, but the servicing procedure becomes time consuming and the risk of contamination increases
Solution Approach 1:
The service unit is divided into separate functional components: the housing containing the vacuum pump, and a removable service adapter assembly. The service adapter can be detached and reattached without opening the housing, allowing oil exchange operations to be performed on the adapter itself rather than requiring access to the vacuum pump inside the housing.
Solution Approach 2:
A service adapter acts as an intermediary component between the external environment and the vacuum pump oil reservoir. This adapter provides external access points for oil drainage and refilling operations, eliminating the need to open the housing while maintaining a sealed connection to the vacuum pump system.
2Adaptability or versatility
If standard oil containers are used for vacuum pump oil, then the oil can be stored and transported, but the correct amount and type of oil cannot be ensured, leading to errors
Solution Approach 1:
The service adapter is designed with universal compatibility features that allow it to work with different types and sizes of oil containers. The adapter includes standardized connection interfaces and measurement markings that accommodate various oil container formats while ensuring the correct amount of oil is delivered to the vacuum pump.
Solution Approach 2:
Manual measurement and pouring operations are replaced by a controlled transfer system. The service adapter incorporates flow control mechanisms and measurement markings that automatically guide the oil transfer process, eliminating the need for user judgment and manual measurement while ensuring the correct oil quantity is added.
3Ease of operation
If the housing is opened for vacuum pump servicing, then the oil can be drained and refilled, but the risk of contamination and improper closing increases
Solution Approach 1:
The service adapter serves as a sealed intermediary that provides controlled access to the vacuum pump oil reservoir without requiring housing opening. All oil drainage and refilling operations occur through sealed ports on the adapter, maintaining the integrity of the housing seal and preventing contamination of the internal components.
Solution Approach 2:
The service adapter incorporates self-contained drainage and refilling functionality with integrated flow control and sealing mechanisms. The system automatically manages the oil transfer process through the adapter's built-in valves and connections, eliminating the need for manual housing opening and closing operations that could introduce contaminants.
4Adaptability or versatility
If multiple service units for different recreational vehicles are maintained, then different vacuum pump requirements can be met, but the complexity of inventory and error potential increases
Solution Approach 1:
The service adapter is designed as a universal component that can interface with different vacuum pump types and oil container formats. The adapter incorporates standardized connection interfaces and adjustable features that allow a single adapter design to serve multiple vacuum pump configurations, eliminating the need for multiple specialized service units.
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
Facilitates faster and more reliable servicing of vacuum pumps by ensuring correct oil amounts and preventing contamination, reducing human error and time consumption.
Implementation Method 1
features check valves for controlled oil and ventilation
Implementation Method 2
it is important that the interior of the service unit is properly ventilated so that refrigerant gases which might leak during use of the service unit can evaporate
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A vacuum pump servicing adapter 4 for servicing a vacuum pump 3 of a service unit 1 for a vehicle air conditioning system, the service unit 1 and a method for servicing the vacuum pump 3 are provided. The vacuum pump servicing adapter 4 comprises a connection element 15 and a ventilation element 16 connectable to the connection element 15 in a ventilation orientation and in a storage orientation. The service unit 1 comprises the vacuum pump servicing adapter 4 located outside a housing 2 of the service unit 1 and connected to an oil reservoir 5 of the vacuum pump 3 of the service unit 1. By applying the method for servicing the vacuum pump 3 using a pressurized oil container 12 containing the correct amount of fresh vacuum oil that needs to be refilled into the oil reservoir 5 via the vacuum pump servicing adapter 4, a quick and reliable way for draining and refilling the oil reservoir 5 of the vacuum pump 3 is provided. With the vacuum pump servicing adapter 4, the service unit 1 and the method described herein, it becomes unnecessary to open the housing 2 of the service unit 1 for servicing the vacuum pump 3.