Heating, ventilation and air conditioning system comprising a fluid compressor
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing HVAC systems with high-speed compressors are bulky and inefficient, unable to be integrated into vehicles due to energy loss through separate cooling circuits and large volume requirements.
Innovation Solution
A compact two-stage high-speed fluid compressor design where the same refrigerant fluid is used for compression and cooling, with integrated channels within the compressor casing to cool the motor and electronic components, allowing for heat recovery and efficient energy use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If separate cooling circuits are used for the compressor, then the motor and electronic components can be cooled effectively, but the system becomes bulky and cannot be integrated into vehicles
Solution Approach 1:
The patent merges the cooling circuit with the compression circuit by having the compressed fluid serve dual purposes: compression and cooling. The fluid is circulated through channels in the motor and electronic component housings, eliminating the need for separate cooling circuits and reducing overall system volume.
Solution Approach 2:
The compressed fluid performs multiple functions simultaneously: it compresses gas in the compression stages and also serves as a coolant for the motor and electronic components. This multi-functionality reduces the number of separate systems needed and decreases overall system volume.
2Temperature
If separate cooling circuits are used for the compressor, then cooling can be provided to motor and electronics, but heat recovery is lost constituting significant energy loss
Solution Approach 1:
The patent converts the waste heat generated by the motor and electronic components into a beneficial resource. The compressed fluid absorbs this heat while circulating through cooling channels, and the heat can then be recovered for useful work such as space heating or preheating water, turning energy loss into energy gain.
Solution Approach 2:
The compressed fluid serves dual functions: cooling the motor and electronics while simultaneously enabling heat recovery for useful work. This multi-functionality eliminates energy loss by capturing and utilizing the thermal energy that would otherwise be wasted.
3Productivity
If high-speed rotation is used in the compressor, then compression ratio increases, but heat generation increases requiring external cooling circuits
Solution Approach 1:
The patent combines the compression function with the cooling function by using the same fluid circuit for both purposes. The high-speed compression generates heat, but this heat is immediately dissipated as the fluid circulates through cooling channels in the motor and electronics housings, eliminating the need for external cooling circuits.
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 results in a compact HVAC system with high rotational speed, high compression ratio, and optimal energy efficiency, enabling it to be seamlessly integrated into vehicles while recovering all heat losses for useful work.
Implementation Method 1
The inner wall is arranged to form channels with the motor between at least one of these inner walls and the motor, said channels allowing the motor to be cooled by contact with the fluid to be compressed circulating in the channels
Implementation Method 2
The integrated housing extends towards the inner wall to allow the electronic component to be cooled by the fluid to be compressed circulating in the channels via the inner wall
Implementation Method 3
The motor drives the high-speed compression wheels, which compress the fluid
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The invention relates to a heating, ventilation and air conditioning system (100) comprising a two-stage fluid compressor (1) including a casing (2) having a fluid inlet and a compressed fluid outlet and enclosing a shaft (7) mounted to rotate about a longitudinal axis, a first compression wheel and a second compression wheel mounted back to back on said shaft (7), said first compression wheel constituting a first compression stage and said second compression wheel constituting a second compression stage, and a motor positioned between the first compression wheel and the second compression wheel and arranged to rotate the shaft (7).The casing (2) includes an internal through-housing (50) extending coaxially to the longitudinal axis and in which at least the motor is disposed, said internal housing (50) having an internal wall (52) arranged to form, with the motor, channels (54) between at least said internal wall (52) and the motor, said channels (54) extending between the first compression stage and the second compression stage, allowing the motor to be cooled by contact with the fluid to be compressed circulating in the channels (54). Furthermore, the casing (2) includes on its surface at least one cavity (60a, 60b) forming at least one integrated housing arranged to receive at least one electronic component (4a, 4b) of the compressor, said integrated housing extending towards the inner wall (52) to allow said electronic component (4a, 4b) to be cooled by the fluid to be compressed circulating in the channels (54) through the inner wall (52).