Air conditioning system of a motor vehicle and method for operating the air conditioning system

Patent metadata

Field	Value
Publication number	US-10987997-B2
Application number	US-201916687757-A
Country	US
Kind code	B2
Filing date	Nov 19, 2019
Priority date	Nov 22, 2018
Publication date	Apr 27, 2021
Grant date	Apr 27, 2021

Abstract

A climate control system of a motor vehicle having a refrigeration circuit and a coolant circuit. The refrigeration circuit includes a compressor, a refrigerant-coolant heat exchanger operable as a condenser/gas cooler for heat exchange between the refrigerant and the coolant of the coolant circuit, and at least one first refrigerant-air heat exchanger for conditioning intake air for the passenger compartment having a first expansion element upstream in a flow direction of the refrigerant. The coolant circuit includes a conveyor device, a first coolant-air heat exchanger heating the intake air for the passenger compartment, and the refrigerant-coolant heat exchanger. A refrigerant-air heat exchanger for exchanging heat between the refrigerant and ambient air is provided. The refrigerant-air heat exchanger is arranged downstream of the first refrigerant-coolant heat exchanger in the flow direction of the refrigerant. An expansion element is upstream of the refrigerant-air heat exchanger in the flow direction of the refrigerant.

First claim

What is claimed is:

1. A climate control system of a motor vehicle comprising:
a refrigeration circuit; and
a coolant circuit, the refrigeration circuit further comprising:
a compressor;
a refrigerant-coolant heat exchanger operable as a condenser/gas cooler for heat exchange between a refrigerant and a coolant of the coolant circuit; and
a first refrigerant-air heat exchanger for conditioning an intake air for a passenger compartment having a first expansion element arranged upstream in a flow direction of the refrigerant,

the coolant circuit further comprising:
a first conveyor device; and
at least one first coolant-air heat exchanger for heating the intake air for the passenger compartment and the first refrigerant-coolant heat exchanger, wherein the refrigeration circuit is formed having a supplemental refrigerant-air heat exchanger of the refrigeration circuit for exchanging heat between the refrigerant and ambient air, wherein the supplemental refrigerant-air heat exchanger of the refrigeration circuit is arranged downstream of the first refrigerant-coolant heat exchanger in the flow direction of the refrigerant and an expansion element is upstream of the supplemental refrigerant-air heat exchanger of the refrigeration circuit in the flow direction of the refrigerant, wherein the refrigeration circuit is formed having a second refrigerant-air heat exchanger for conditioning the intake air for the passenger compartment, wherein a second expansion element is upstream of the second refrigerant-air heat exchanger in the flow direction of the refrigerant, and the coolant circuit is formed having a second coolant-air heat exchanger for heating the intake air for the passenger compartment, wherein the first refrigerant-air heat exchanger of the refrigeration circuit and the first coolant-air heat exchanger of the coolant circuit are arranged inside a first component of an air conditioner and so the intake air for the passenger compartment can be applied to the first refrigerant-air heat exchanger of the refrigeration circuit and the first coolant-air heat exchanger of the coolant circuit in succession in a flow direction of the intake air, and wherein the second refrigerant-air heat exchanger of the refrigeration circuit and the second coolant-air heat exchanger of the coolant circuit are arranged inside a second component of the air conditioner, wherein the second component comprises an opening formed in a wall of a housing for discharging air into surroundings and an air guiding unit for opening and closing the opening, and wherein the opening is formed arranged downstream of the second refrigerant-air heat exchanger in the flow direction of the air.

2. The climate control system as claimed in claim 1 , wherein the first component of the air conditioner is formed so that air exhausted from the passenger compartment or the ambient air or a mixture made of air exhausted from the passenger compartment and the ambient air can flow through it.

3. The climate control system as claimed in claim 1 , wherein the second component of the air conditioner is formed so that air exhausted from the passenger compartment can flow through the second component, wherein the air can be discharged into the passenger compartment or into surroundings.

4. The climate control system as claimed in claim 1 , wherein the expansion element upstream of the supplemental refrigerant-air heat exchanger of the refrigeration circuit for exchanging heat between the refrigerant and the ambient air and the supplemental refrigerant-air heat exchanger of the refrigeration circuit are arranged inside a first flow path of the refrigeration circuit, and wherein a second flow path is formed as a bypass to the first flow path having the supplemental refrigerant-air heat exchanger of the refrigeration circuit, wherein the first flow path and the second flow path are each formed extending between a diversion point and a discharge point.

5. The climate control system as claimed in claim 4 , wherein a shutoff valve is arranged inside the second flow path formed as a bypass to the first flow path having the supplemental refrigerant-air heat exchanger of the refrigeration circuit.

6. The climate control system as claimed in claim 1 , wherein the first coolant-air heat exchanger is arranged inside a first flow path of the coolant circuit and the second coolant-air heat exchanger is arranged inside a second flow path of the coolant circuit, wherein the first flow path and the second flow path and the first coolant-air heat exchanger and the second coolant-air heat exchanger are arranged so that coolant can flow through them in parallel.

7. The climate control system as claimed in claim 1 , wherein the coolant circuit is formed having a third coolant-air heat exchanger for transferring heat to air.

8. The climate control system as claimed in claim 7 , wherein the third coolant-air heat exchanger is arranged inside a third flow path of the coolant circuit, which is arranged so that it can have coolant flow through it in parallel to the first flow path formed by the first coolant-air heat exchanger and/or the second flow path formed by the second coolant-air heat exchanger.

9. A climate control system of a motor vehicle comprising:
a refrigeration circuit; and
a coolant circuit, the refrigeration circuit further comprising:
a compressor;
a refrigerant-coolant heat exchanger operable as a condenser/gas cooler for heat exchange between a refrigerant and a coolant of the coolant circuit; and
at least one first refrigerant-air heat exchanger for conditioning an intake air for a passenger compartment having a first expansion element arranged upstream in a flow direction of the refrigerant,

the coolant circuit further comprising:
a first conveyor device; and
at least one first coolant-air heat exchanger for heating the intake air for the passenger compartment and the first refrigerant-coolant heat exchanger, wherein the refrigeration circuit is formed having a supplemental refrigerant-air heat exchanger for exchanging heat between the refrigerant and ambient air, wherein the supplemental refrigerant-air heat exchanger of the refrigeration circuit is arranged downstream of the first refrigerant-coolant heat exchanger in the flow direction of the refrigerant and an expansion element is upstream of the supplemental refrigerant-air heat exchanger of the refrigeration circuit in the flow direction of the refrigerant, wherein the refrigeration circuit is formed having a second refrigerant-air heat exchanger for conditioning the intake air for the passenger compartment, wherein a second expansion element is upstream of the second refrigerant-air heat exchanger in the flow direction of the refrigerant, and the coolant circuit is formed having a second coolant-air heat exchanger for heating the intake air for the passenger compartment, wherein the first refrigerant-air heat exchanger of the refrigeration circuit and the first coolant-air heat exchanger of the coolant circuit are arranged inside a first component of an air conditioner and so the intake air for the passenger compartment can be applied to the first refrigerant-air heat exchanger of the refrigeration circuit and the first coolant-air heat exchanger of the coolant circuit in succession in a flow direction of the intake air, and wherein the second refrigerant-air heat exchanger of the refrigeration circuit and the second coolant-air heat exchanger of the coolant circuit are arranged inside a second component of the air conditioner, wherein the second refrigerant-air heat exchanger of the refrigeration circuit and the second coolant-air heat exchanger of the coolant circuit are arranged so air can be applied to them in succession inside the second

Assignees

• Hanon Systems

Inventors

• Hötzel Martin
• Durrani Navid
• Bara Christoph

Classifications

• B60H1/039

  from air leaving the interior of the vehicle, i.e. heat recovery · CPC title

• B60H2001/00121

  More than one heat exchanger in parallel · CPC title

• B60H1/00671

  Damper doors moved by rotation; Grilles · CPC title

• B60H1/32281 Primary

  comprising a single secondary circuit, e.g. at evaporator or condenser side · CPC title

• B60H1/323

  characterised by comprising auxiliary or multiple systems, e.g. plurality of evaporators, or by involving auxiliary cooling devices · CPC title