# US 12,007,183 B2 · Heat exchanger

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- Number: US 12,007,183 B2
- Document ID: US12007183B2
- Status: Granted
- Kind: B2
- Application number: 17/487,905
- Filed: 2021-09-28
- Published: 2022-01-20
- Granted: 2024-06-11
- Earliest claimed: 2019-04-01
- Assignees: Denso Corporation
- Applicants: Denso Corporation
- Inventors: Yusuke Takagi; Kenshiro Muramatsu; Satoshi Nita
- Web page: https://patentgrep.com/patent/US12007183B2

## CPC

- F28D 9/005: {the plates having openings therein for both heat-exchange media}
- F28F 3/06: the means being attachable to the element
- B60H 1/32: Cooling devices {(B60H1/00478, B60H1/005 take precedence)}
- F25B 39/02: Evaporators
- F28F 3/08: Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
- F28F 9/0282: {by varying the geometry of conduit ends, e.g. by using inserts or attachments for modifying the pattern of flow at the conduit inlet or outlet}
- F28D 2021/0071: {Evaporators}
- F28D 2021/0085: {Evaporators}
- F28F 3/027: {with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips}
- F28F 2275/04: by brazing
- F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general)
- F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16)
- B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS

## Abstract

A heat exchanger includes a fin arranged in a first passage and a tubular tank portion formed so as to penetrate plate members stacked in a stacking direction. An inflow port is formed in a peripheral wall of the tank portion to allow a refrigerant to flow into the first passage. When the fin is arranged in a fin installation portion in the first passage, a passage reduction portion is formed at the inflow port and is narrower than a width of the fin installation portion in the stacking direction.

## Claims

### Claim 1

A heat exchanger comprising:
a plurality of plate members stacked with each other in a stacking direction so as to define a plurality of first passages and a plurality of second passages, heat being exchanged between a refrigerant flowing through the first passage and a fluid flowing through the second passage;
a fin arranged in a fin installation portion in the first passage; and
a tubular tank portion formed to penetrate the plurality of plate members in the stacking direction, wherein
each of the plate members includes two plates joined with each other,
each of the two plates has a burring portion to form a peripheral wall of the tank portion,
an inflow port is formed between two burring portions of the two plates so as to allow the refrigerant to flow into the first passage,
a passage reduction portion is formed at the inflow port, and is narrower than a width of the fin installation portion in the stacking direction, and
one of the two plates includes a first protrusion located adjacent to a first burring portion, the other of the two plates includes a second protrusion located adjacent to a second burring portion, and the first protrusion and the second protrusion are joined to each other.

### Claim 2 (depends on 1)

The heat exchanger according to claim 1, wherein
the inflow port and the passage reduction portion are defined between a tip end of the first burring portion and a tip end of the second burring portion.

### Claim 3 (depends on 1)

The heat exchanger according to claim 1, wherein
the inflow port has a width, the inflow port width is narrower than the width of the fin installation portion.

### Claim 4 (depends on 1)

The heat exchanger according to claim 1, wherein
the inflow port has a width, a dimension of the inflow port width is the same as a dimension of the width of the fin installation portion.