US 2025/0018766 A1 · DEVICE FOR PROTECTING AN AIR CONDITIONING SYSTEM OF A VEHICLE

Abstract

A device protects a vehicle air conditioning system and includes a pressure estimator to estimate a compressor refrigerant discharge pressure based on predetermined vehicle and air conditioning system information. The device includes a pressure switch to selectively transmit a cutting-off request signal for cutting off driving of the compressor depending on the compressor refrigerant discharge pressure. The device includes a controller to determine whether to allow the compressor to be driven based on the estimation discharge pressure determined by the pressure estimator and whether the pressure switch has transmitted a cutting-off request signal.

Claims20

Dependent claims

A device for protecting an air conditioning system of a vehicle for controlling the state of interior air in the vehicle, the device comprising:

a pressure estimator configured to estimate a refrigerant discharge pressure of a compressor for the air conditioning system based on predetermined vehicle information and air conditioning system information, and configured to determine the estimated refrigerant discharge pressure as an estimation discharge pressure of the compressor;
a pressure switch configured to selectively transmit a cutting-off request signal for cutting off driving of the compressor depending on the refrigerant discharge pressure of the compressor;
and
an operation controller configured to determine whether to allow the compressor to be driven based on the estimation discharge pressure determined by the pressure estimator and whether the pressure switch has transmitted a cutting-off request signal.

1 more element

A device for protecting an air conditioning system of a vehicle, the device comprising:

a pressure estimator provided with a discharge pressure estimation map configured to estimate a refrigerant discharge pressure of a compressor for the air conditioning system, and configured to estimate the refrigerant discharge pressure of the compressor using the discharge pressure estimation map and to determine the estimated refrigerant discharge pressure as an estimation discharge pressure of the compressor;
a pressure switch configured to selectively transmit a cutting-off request signal for cutting off driving of the compressor depending on the refrigerant discharge pressure of the compressor;
an operation controller configured to determine whether to allow the compressor to be driven based on the estimation discharge pressure of the compressor and whether the pressure switch has transmitted a cutting-off request signal;
and
an estimation map corrector configured to selectively correct the discharge pressure estimation map based on a difference between an operation pressure of the pressure switch and the estimation discharge pressure of the compressor.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/898,212Filed 26 Sep 2024

Priority

KR 10-2021-007683014 Jun 2021

Published

16 Jan 2025

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

B60H 1/00585
Details, e.g. mounting arrangements, desaeration devices: means for monitoring, testing or servicing the air-conditioning
B60H 1/3225
Using compression: characterised by safety arrangements, e.g. compressor anti-seizure means or by signalling devices
B60H 1/00807
Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g.…
B60H 1/3216
Control means therefor: for improving a change in operation duty of a compressor in a vehicle

Device for protecting an air conditioning system of a vehicle

Life of this patent

Device for protecting an air conditioning system of a vehicle

Life of this patent

Abstract

Claims20