Heat exchanger for vehicle

Patent metadata

Field	Value
Publication number	US-10618372-B2
Application number	US-201815948054-A
Country	US
Kind code	B2
Filing date	Apr 9, 2018
Priority date	Nov 28, 2017
Publication date	Apr 14, 2020
Grant date	Apr 14, 2020

Abstract

A vehicle heat exchanger is disclosed that includes a heat exchange unit having first and second plates layered to alternately form a first and second flow path. Operation fluids passing through the paths exchange heat. A first inflow aperture is formed on a second surface of the unit and connected to the first flow path. A first exhaust aperture is formed corresponding to the first inflow aperture on the first surface of the unit and connected to the first flow path. A connection aperture is formed in the plates, connected to the first flow path, and closing a connection to the second flow path. A second inflow aperture is formed corresponding to the first inflow aperture and connected to the second flow path. A second exhaust aperture is formed at a center of the unit and connected to the second inflow aperture through the second flow path.

First claim

What is claimed is:

1. A heat exchanger for a vehicle, comprising:
a heat exchange unit in which a plurality of first and second plates are alternately layered to alternately form a first flow path and a second flow path inside, wherein operation fluids each pass through the first and second flow paths, respectively, and exchange heat and a first surface of the heat exchange unit is connected to an expansion valve;
a first inflow aperture formed at a first side corner portion on a second surface of the heat exchange unit and connected to the first flow path;
a first exhaust aperture formed to correspond to the first inflow aperture on the first surface of the heat exchange unit and connected to the first flow path;
connection apertures respectively formed in the first and second plate at positions facing the first inflow aperture and the first exhaust aperture, connected to the first flow path inside the heat exchange unit, and closing a connection to the second flow path;
a second inflow aperture formed to correspond to the first inflow aperture at a second side corner portion of the heat exchange unit and connected to the second flow path; and
a second exhaust aperture formed at a center of the heat exchange unit and connected to the second inflow aperture through the second flow path,
wherein at least one noise reduction device configured to reduce noise and vibration generated from an operation fluid moving through the second inflow aperture and the second exhaust aperture is mounted to the first surface or the second surface of the heat exchange unit,
wherein the first plate includes:
a first main body in which at least one protrusion that extends inside the first flow path is formed on a first surface of the first main body; and
a first extension part having the first inflow aperture and formed extending toward a width direction of the expansion valve from the first main body, and

wherein the second plate includes:
a second main body in which at least one protrusion that extends inside the second flow path is formed on a first surface of the second main body; and
a second extension part having the second inflow aperture and formed extending toward the width direction of the expansion valve from the second main body,
wherein a notching aperture is formed at a position that corresponds to the second exhaust aperture at the second plate mutually coupled to form the second flow path to provide communication between the second flow path and the second exhaust aperture.

2. The heat exchanger for the vehicle of claim 1 , wherein the first extension part and the second extension part respectively extend from the first and second main body and are positioned to cross each other.

3. The heat exchanger for the vehicle of claim 1 , wherein the connection apertures are formed to be separated from the second exhaust aperture at an opposite side of the first and second extension part on the first and second main body.

4. The heat exchanger for the vehicle of claim 1 , wherein the noise reduction device includes:
a first noise reduction device mounted at the second surface of the heat exchange unit,
wherein the first noise reduction device includes a muffler body in which a center part is formed of a cylindrical shape with reference to a length direction, and first and second mounting parts having a diameter less than a diameter of the center part from the center part toward both ends of the first and second mounting parts are formed of a conical shape.

5. The heat exchanger for the vehicle of claim 4 , wherein a mounting plate formed in a same external shape as a shape of the heat exchanger is mounted on the first mounting part through welding.

6. The heat exchanger for the vehicle of claim 5 , wherein the mounting plate is mounted on the second surface of the heat exchange unit through welding to connect the first mounting part to the second exhaust aperture.

7. The heat exchanger for the vehicle of claim 5 , wherein a penetration aperture that corresponds to the first inflow aperture is formed in the mounting plate.

8. The heat exchanger for the vehicle of claim 7 , wherein a pipe block used to mount a connection pipe is respectively formed on the second mounting part and the penetration aperture.

9. The heat exchanger for the vehicle of claim 4 , wherein the first noise reduction device is an expansion muffler.

10. The heat exchanger for the vehicle of claim 4 , wherein the noise reduction device includes:
a second noise reduction device mounted between the expansion valve and the heat exchange unit,
wherein the second noise reduction device includes
a noise reduction plate configured of at least two sheets to be mutually coupled and forming a space inside; and
a resonance aperture formed to correspond to the second exhaust aperture on the center of the noise reduction plate and connected to the space.

11. The heat exchanger for the vehicle of claim 10 , wherein first and second protruded parts are integrally formed to correspond to the first and second inflow apertures at the noise reduction plate.

12. The heat exchanger for the vehicle of claim 10 , wherein the second noise reduction device is formed in a same external shape as a shape of the heat exchange unit and is mounted on the heat exchange unit through welding.

13. The heat exchanger for the vehicle of claim 10 , wherein the space closes a connection to the first flow path, the first inflow aperture, and the first exhaust aperture and thus an operation fluid exhausted to the second exhaust aperture after flowing into the second inflow aperture and passing through the second flow paths only flows through the resonance aperture.

14. The heat exchanger for the vehicle of claim 5 , wherein the noise reduction device includes a second noise reduction device and the second noise reduction device is a resonance muffler.

15. The heat exchanger for the vehicle of claim 1 , wherein a connection plate is mounted on the expansion valve by a fixing bolt.

16. The heat exchanger for the vehicle of claim 15 , wherein a seal ring is interposed between the connection plate and the expansion valve to prevent a leakage of the operation fluids that flow into the expansion valve from the heat exchange unit or flow into the heat exchange unit from the expansion valve.

17. The heat exchanger for the vehicle of claim 15 , wherein the heat exchange unit or the noise reduction device is mounted on the connection plate through welding in an opposite direction of the expansion valve.

18. The heat exchanger for the vehicle of claim 1 , wherein the operation fluids include a refrigerant of a high temperature and a high pressure that is discharged from a condenser to pass through the first flow path through the first inflow aperture, and a refrigerant of a low temperature and a low pressure that is discharged from an evaporator to pass through the second flow path through the second inflow aperture.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp
• Hanon Systems

Inventors

• Kim Jae Yeon
• Oh Dong Seok
• Cho Wan Je
• Shin Hyun Keun
• Rhee Sangyong

Classifications

• F28F3/044

  the deformations being pontual, e.g. dimples · CPC title

• F28D9/005

  the plates having openings therein for both heat-exchange media · CPC title

• B60H1/00485

  Valves for air-conditioning devices, e.g. thermostatic valves · CPC title

• F25B2500/13

  Vibrations · CPC title

• F25B2500/221

  Preventing leaks from developing · CPC title