# US 8,464,550 B2 · Heat exchanger with cold accumulator

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- Number: US 8,464,550 B2
- Document ID: US8464550B2
- Status: Granted
- Kind: B2
- Application number: 12/281,704
- Filed: 2007-02-26
- Published: 2009-01-08
- Granted: 2013-06-18
- Earliest claimed: 2006-03-09
- Assignees: Behr GmbH & Co.
- Applicants: Boris Kerler; Michael Kohl; Ralf Manski; Thomas Strauss; Christoph Walter
- Inventors: Boris Kerler; Michael Kohl; Ralf Manski; Thomas Strauss; Christoph Walter
- Web page: https://patentgrep.com/patent/US8464550B2

## CPC

- F28D 1/05391: {with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators}
- B60H 1/00335: {of the gas-air type (B60H1/18 takes precedence)}
- B60H 1/005: {Regenerative cooling means, e.g. cold accumulators}
- B60H 1/3227: {characterised by the arrangement or the type of heat exchanger, e.g. condenser, evaporator (condensed liquid drainage means B60H1/3233)}
- C09K 5/063: {Materials absorbing or liberating heat during crystallisation; Heat storage materials}
- F25B 39/02: Evaporators
- F28D 20/02: using latent heat
- F28D 20/028: {Control arrangements therefor}
- F28D 2021/0085: {Evaporators}
- F28F 21/06: of plastics material
- Y02E 60/14: Thermal energy storage
- 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)
- B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

The invention relates to a heat exchanger, in particular an evaporator (1), with a plurality of refrigerant-carrying pipes (6, 7) which are arranged next to one another and end in at least one collecting vessel (9), and with at least one cold accumulator (4), in which a cold accumulating medium is provided, wherein the evaporator (1) has two regions arranged parallel to each other, a first region (1′) and a second region (1′), and the cold accumulator (4) is arranged in the second region (1′). In this case, the refrigerant-carrying pipes (6, 7) of the first and second regions (1′,1′) are arranged in line with one another and have a width corresponding to one another (b1, b2, b3), and the first and second regions (1′, 1′) have common, continuous corrugated rib.

## Claims

### Claim 1

A heat exchanger comprising:
a first plurality of pipes configured to allow flow of refrigerant therethrough;
a second plurality of pipes configured to allow flow of refrigerant therethrough;
a plurality of cold accumulating pipes, each cold accumulating pipe comprising a refrigerant duct configured to allow flow of refrigerant therethrough, and a cold accumulating medium cavity configured to hold a cold accumulating medium, wherein, for each cold accumulating pipe, an elongated length of the cold accumulating medium cavity runs alongside a length of the refrigerant duct in a parallel manner;
at least one upper collecting vessel comprising a first upper collecting vessel region and a second upper collecting vessel region; and
at least one lower collecting vessel comprising a first lower collecting vessel region and a second lower collecting vessel region,
wherein the first plurality of pipes, the second plurality of pipes, and the cold accumulating pipes are arranged in parallel,
wherein ends of the first plurality of pipes are connected in a fluid-transmitting manner to the first upper collecting vessel region and the first lower collecting vessel region,
wherein ends of the second plurality of pipes and ends of the refrigerant ducts are connected in a fluid-transmitting manner to the second upper collecting vessel region and the second lower collecting vessel region, and
wherein the first plurality of pipes, the second plurality of pipes, and the plurality of cold accumulating pipes have a common width, and the first plurality of pipes is directly adjacent to the second plurality of pipes, the second plurality of pipes is directly adjacent to both the plurality of cold accumulating pipes and the first plurality of pipes, the plurality of cold accumulating pipes is directly adjacent to the second plurality of pipes but is not directly adjacent to the first plurality of pipes.

### Claim 2 (depends on 1)

The heat exchanger of claim 1, further comprising a plurality of corrugated fins, at least one of the plurality of corrugated fins being disposed continuously between two of the first plurality of pipes, two of the second plurality of pipes, and two of the plurality of cold accumulating pipes.

### Claim 3 (depends on 1)

The heat exchanger of claim 1, wherein:
the first plurality of pipes, the first upper collecting vessel region, and the first lower collecting vessel region are located on an air inflow side of the heat exchanger, and
the second plurality of pipes, the plurality of cold accumulating pipes, the second upper collecting vessel region, and the second lower collecting vessel region are located on an air outflow side of the heat exchanger.

### Claim 4 (depends on 1)

The heat exchanger of claim 1, wherein the first plurality of pipes is separated from the plurality of cold accumulating pipes by the second plurality of pipes.

### Claim 5 (depends on 1)

The heat exchanger of claim 1, wherein each of the cold accumulating pipes is a double-walled pipe, the refrigerant duct being located in a central region of the cold accumulating pipe, and the cold accumulating medium cavity being located in an outer region of the cold accumulating pipe.

### Claim 6 (depends on 1)

The heat exchanger of claim 1, wherein the first plurality of pipes is arranged in a first row, the second plurality of pipes is arranged in a second row, and the plurality of cold accumulating pipes are arranged in a third row.

### Claim 7 (depends on 1)

The heat exchanger of claim 1, further comprising a cold accumulating medium collecting vessel, wherein:
ends of the cold accumulating medium cavities are connected in a fluid-transmitting manner to the cold accumulating medium collecting vessel, and
the refrigerant ducts extend through the cold accumulating medium collecting vessel before connecting to the second upper collecting vessel region.

### Claim 8 (depends on 1)

The heat exchanger of claim 1, wherein:
the heat exchanger includes a plurality of blocks configured to allow flow of refrigerant in different directions, the plurality of blocks including a first row of adjacent blocks and a second row of adjacent blocks,
the first row of adjacent blocks comprises the first plurality of pipes, and
the second row of adjacent blocks comprises the second row of pipes and the plurality of cold accumulating pipes.

### Claim 9 (depends on 8)

The heat exchanger of claim 8, wherein the first row of adjacent blocks includes two to four blocks, and the second row of adjacent blocks includes two to four blocks.

### Claim 10 (depends on 9)

The heat exchanger of claim 9, wherein the first row of adjacent blocks includes three blocks, and the second row of adjacent blocks includes three blocks.

### Claim 11 (depends on 1)

The heat exchanger of claim 1, further comprising the cold accumulating medium, wherein a phase conversion temperature of the cold accumulating medium is in a range from 0° C. to 30° C.

### Claim 12 (depends on 1)

The heat exchanger of claim 1, further comprising the cold accumulating medium, wherein a phase conversion temperature of the cold accumulating medium is in a range from 2° C. to 15° C.

### Claim 13 (depends on 1)

The heat exchanger of claim 1, further comprising the cold accumulating medium, wherein a phase conversion temperature of the cold accumulating medium is in a range from 4° C. to 12° C.

### Claim 14 (depends on 1)

The heat exchanger of claim 1, wherein at least one insert is arranged in at least one of the plurality of cold accumulating pipes.

### Claim 15 (depends on 1)

The heat exchanger of claim 1, wherein the at least one upper collecting vessel is formed in a single-piece, the first upper collecting vessel region being separated from the second upper collecting vessel region by a dividing wall.

### Claim 16 (depends on 1)

The heat exchanger of claim 1, wherein the at least one lower collecting vessel is formed in a single-piece, the first lower collecting vessel region being separated from the second lower collecting vessel region by a dividing wall.

### Claim 17 (depends on 1)

The heat exchanger of claim 1, wherein the at least one upper collecting vessel is formed of first and second upper collecting vessels, the first upper collecting vessel region being located in the first upper collecting vessel, and the second upper collecting vessel region being located in the second upper collecting vessel.

### Claim 18 (depends on 1)

The heat exchanger of claim 1, wherein the at least one lower collecting vessel is formed of first and second lower collecting vessels, the first lower collecting vessel region being located in the first lower collecting vessel, and the second lower collecting vessel region being located in the second lower collecting vessel.

### Claim 19 (depends on 1)

The heat exchanger of claim 1, wherein the direction of the flow of air through the heat exchanger is perpendicular to the flow of the refrigerant through the first and second plurality of pipes.