Heat exchanger

Patent metadata

Field	Value
Publication number	US-12138987-B2
Application number	US-202217887186-A
Country	US
Kind code	B2
Filing date	Aug 12, 2022
Priority date	Aug 13, 2021
Publication date	Nov 12, 2024
Grant date	Nov 12, 2024

Abstract

A plate-type heat exchanger, in which plates are stacked on top of each other as a stack and connected to each other in a sealed manner, fluid channels being formed between adjacent plates in each case, the stack of plates being divided into a first stack region and a second stack region, the first stack region forming an evaporator having first fluid channels and second fluid channels, and the second stack region forming an internal heat exchanger having third fluid channels and fourth fluid channels.

First claim

What is claimed is:

1. A plate-type heat exchanger comprising:
at least two plates stacked on top of each other as a stack and connected to each other in a sealed manner; and
at least one fluid channel being formed between adjacent plates,
wherein the stack of plates are divided into a first stack region and into a second stack region,
wherein the first stack region forms an evaporator having first fluid channels and second fluid channels, and
wherein the second stack region forms an internal heat exchanger having third fluid channels and fourth fluid channels.

2. The heat exchanger according to claim 1 , wherein the first stack region is designed such that the first fluid channels are designed for the through-flow of a refrigerant and the second fluid channels are designed for the through-flow of a coolant, the second stack region being designed such that the third fluid channels are designed for the through-flow of the refrigerant in a first state, and the second fluid channels are designed for the through-flow of the refrigerant in a second state.

3. The heat exchanger according to claim 1 , wherein the first stack region has a first port for supplying the refrigerant and a second port for supplying the coolant, and the first stack region has a third port for removing the refrigerant and a fourth port for removing the coolant, the second stack region having a fifth port for supplying the refrigerant in the first state and a sixth port for supplying the refrigerant in the second state, and the second stack region has a seventh port for removing the refrigerant in the first state and an eight port for removing the refrigerant in the second state.

4. The heat exchanger according to claim 3 , wherein the first port is designed as an opening in a plate in the transition from the first stack region to the second stack region, the third port is designed as an opening in a plate in the transition from the first stack region to the second stack region, and the sixth port is designed as an opening in a plate in the transition from the first stack region to the second stack region.

5. The heat exchanger according to claim 3 , wherein the fifth port and/or the eighth port and/or the seventh port is or are designed as opening(s) and/or nozzle(s) and/or flange(s) in the second stack region.

6. The heat exchanger according to claim 1 , further comprising an expansion element for expanding the refrigerant, the expansion element having a ninth port for supplying the refrigerant to the expansion element and having a tenth port for removing the refrigerant from the expansion element.

7. The heat exchanger according to claim 6 , wherein the ninth port and/or the tenth port is or are designed as opening(s) and/or nozzle(s) and/or flange(s) on the expansion element.

8. The heat exchanger according to claim 6 , wherein the expansion element is fixedly connected to the stack of plates or to the second stack region.

9. The heat exchanger according to claim 8 , wherein the seventh port is situated opposite the ninth port.

10. The heat exchanger according to claim 6 , wherein the tenth port is fluidically connected to the first port via a connecting channel.

11. The heat exchanger according to claim 10 , wherein the connecting channel traverses the second stack region or is designed as an immersion tube which traverses the second stack region.

12. The heat exchanger according to claim 1 , wherein the first port is used to supply the refrigerant to the first fluid channels, and the third port is used to remove the refrigerant from the first fluent channels, the second port being used to supply the coolant to the second fluid channels, and the fourth port being used to remove the coolant from the second fluid channels, the fifth port being used to supply the refrigerant in the first state to the third fluid channels, and the seventh port being used to remove the refrigerant in the first state from the third fluid channels, the sixth port being used to supply the refrigerant in the second state to the fourth fluid channels, and the eighth port being used to remove the refrigerant in the second state from the fourth fluid channels.

13. The heat exchanger according to claim 1 , wherein the seventh port is fluidically connected to the ninth port so that refrigerant in the first state flows into the expansion element, the tenth port being fluidically connected to the first port so that refrigerant flows into the first fluid channels from the expansion element, the third port being fluidically connected to the sixth port so that refrigerant flows into the fourth fluid channels from the first fluid channels as refrigerant in the second state.

14. The heat exchanger according to claim 1 , wherein the second port and/or the fourth port is or are designed as opening(s) and/or nozzle(s) and/or flange(s) in the first stack region.

15. The heat exchanger according to claim 1 , wherein the first fluid channels have a single-pass, double-pass, triple-pass or multi-pass design, and/or the second fluid channels have a single-pass, double-pass, triple-pass or multi-pass design, and/or the third fluid channels have a single-pass, double-pass, triple-pass or multi-pass design, and/or the fourth fluid channels have a single-pass, double-pass, triple-pass or multi-pass design.

Assignees

• Mahle Int Gmbh

Inventors

• Feldkeller Timo

Classifications

• F28D9/0093

  Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids · CPC title

• B60H1/00385

  for vehicles having an electrical drive, e.g. hybrid or fuel cell · CPC title

• B60H1/00342

  of the liquid-liquid type · CPC title

• F28F2265/12

  for preventing overpressure · CPC title

• F28F27/02

  for controlling the distribution of heat-exchange media between different channels ({static flow control means in header boxes F28F9/026}; arrangements of guide plates or guide vanes F28F9/22, F28F25/12) · CPC title