HEAT DISSIPATOR AND ASSOCIATED THERMAL MANAGEMENT CIRCUIT

• US 20160159195A1
• Filed: 05/15/2014
• Published: 06/09/2016
• Est. Priority Date: 05/22/2013
• Status: Abandoned Application

• Current Assignee: Valeo Systemes Thermiques (Valeo SE)
• Original Assignee: Valeo Systemes Thermiques (Valeo SE)
• Inventors: Azzouz, Kamel, De Pelsemaeker, Georges
• Application Number:
  US14/892,857
• Publication Number:
  US 20160159195A1
• Time in Patent Office: Days
• CPC Class Codes: B60H 1/00328 of the liquid-air type
• CPC Class Codes: B60H 1/00492 comprising regenerative heating or cooling means, e.g. heat accumulators
• CPC Class Codes: F28D 20/023 the latent heat storage material being enclosed in granular particles or dispersed in a porous, fibrous or cellular structure
• CPC Class Codes: F28F 9/0224 Header boxes formed by sealing end plates into covers F28F9/0221 takes precedence
• CPC Class Codes: Y02E 60/14 Thermal energy storage

Abstract

The present invention relates to a heat dissipator (7) for dissipating thermal energy contained in a first heat-transfer fluid and intended to be placed in a thermal management circuit (1) of a motor vehicle, said heat dissipator (7) comprising at least one inlet container (70) for the first heat-transfer fluid, at least one outlet container for the first heat-transfer fluid and heat-exchange surfaces (72) between the first heat-transfer fluid and a second heat-transfer fluid, at least one inlet container (70) and/or at least one outlet container for the first heat-transfer fluid comprising a phase change material (15).

Claims

1. A heat dissipator for dissipating thermal energy contained in a first heat-transfer fluid and intended to be placed in a thermal management circuit of a motor vehicle, said heat dissipator comprising:

at least one inlet container for the first heat-transfer fluid; and

at least one outlet container for the first heat-transfer fluid and heat-exchange surfaces between the first heat-transfer fluid and a second heat-transfer fluid,

wherein at least one inlet container and/or at least one outlet container for the first heat-transfer fluid comprises a phase change material.

2. The heat dissipator as claimed in claim 1, wherein the phase change material is incorporated within the wall of at least one inlet container and/or at least one outlet container for the first heat-transfer fluid.

3. The heat dissipator as claimed in claim 1, wherein the phase change material is in the form of capsules of phase change material placed in at least one inlet container and/or at least one outlet container for the first heat-transfer fluid.

4. The heat dissipator as claimed in claim 3, wherein at least one inlet container and/or at least one outlet container for the first heat-transfer fluid comprising the capsules of phase change material comprises means for retaining said capsules of phase change material within said inlet container and/or said outlet container for the first heat-transfer fluid.

5. The heat dissipator as claimed in claim 4, wherein the retaining means are placed at the inlets and/or outlets of the exchange surfaces and at the inlet of at least one inlet container for the first heat-transfer fluid and/or at the outlet of at least one outlet container for the first heat-transfer fluid.

6. The heat dissipator as claimed in claim 4, wherein the means for retaining said capsules of phase change material within at least one inlet container and/or at least one outlet container for the first heat-transfer fluid are grids.

7. The heat dissipator as claimed in claim 4, wherein the means for retaining said capsules of phase change material within at least one inlet container and/or at least one outlet container for the first heat-transfer fluid are filters.

8. The heat dissipator as claimed in claim 3, wherein the capsules of phase change material comprise an oil-repellent and/or water-repellent surface treatment.

9. The heat dissipator as claimed in claim 1, wherein the phase change material has a latent heat greater than or equal to 280 kJ/m³.

10. The heat dissipator as claimed in claim 9, wherein the phase change material has a phase change temperature of between 47°

C. and 55°

C.

11. The heat dissipator as claimed in claim 1, wherein the phase change material has a phase change temperature of between 80°

C. and 110°

C.

12. A thermal management circuit comprising a heat dissipator as claimed in claim 1, said heat dissipator being arranged in a thermal regulation loop, known as a low temperature loop, in which the first heat-transfer fluid has a mean temperature of between 30°

C. and 80°

C.

13. A thermal management circuit comprising a heat dissipator as claimed in claim 1, said heat dissipator being arranged in a thermal regulation loop, known as a high temperature loop, in which the first heat-transfer fluid has a mean temperature of between 80°

C. and 120°

C.