PATENT CLAIM ANALYSIS

Application Number: 15763918
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["062", "228300"]

Abstract:
A method for controlling a vapour compression system ( 1 ) comprising an ejector ( 6 ) is disclosed. In the case that a pressure difference between a pressure prevailing in the receiver ( 7 ) and a pressure of refrigerant leaving the evaporator ( 9 ) decreases below a first lower threshold value, the pressure of refrigerant leaving the heat rejecting heat exchanger ( 5 ) is kept at a level which is slightly higher than the pressure level providing optimal COP. Thereby the ejector ( 6 ) can operate at lower ambient temperatures, and the energy efficiency of the vapour compression system ( 1 ) is improved.

Claim (Index 1):
A method for controlling a vapour compression system, the vapour compression system comprising a compressor unit, a heat rejecting heat exchanger, an ejector comprising a primary inlet, a secondary inlet and an outlet, a receiver, at least one expansion device and at least one evaporator, arranged in a refrigerant path, the method comprising the steps of:\n obtaining a temperature of refrigerant leaving the heat rejecting heat exchanger, deriving a reference pressure value of refrigerant leaving the heat rejecting heat exchanger, based on the obtained temperature of refrigerant leaving the heat rejecting heat exchanger, obtaining a pressure difference between a pressure prevailing in the receiver and a pressure of refrigerant leaving the evaporator, comparing the pressure difference to a predefined first lower threshold value, in the case that the pressure difference is higher than the first lower threshold value, controlling the vapour compression system on the basis of the derived reference pressure value, and in order to obtain a pressure of refrigerant leaving the heat rejecting heat exchanger which is equal to the derived reference pressure value, and in the case that the pressure difference is lower than the first lower threshold value, selecting a fixed reference pressure value corresponding to a derived reference pressure value when the pressure difference is at a predefined level which is essentially equal to the first lower threshold value, and controlling the vapour compression system on the basis of the selected fixed reference pressure value, and in order to obtain a pressure of refrigerant leaving the heat rejecting heat exchanger which is equal to the selected fixed reference pressure value.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 90.0
- Lexical Diversity: 1.78125
- Patent Class: 62.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15527545', '15763988', '15531989', '14128271', '15575473']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8583791351009826
- 35 USC 102 Novelty (BERT): 0.5440763434614821
- Combined Prediction Score: 0.8269488559370326
- Mean Citation Score: 368.73822200000006
- Max Citation Score: 403.69415
- Similarity Product: 364.06290083490615

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test