Heat exchanger core and plate heat exchanger

Abstract

This invention relates to a heat exchange core (10) for a plate heat exchanger (1). The core (10) includes heat exchange plates (100, 200) having a heat exchange region (A) with a heat transfer pattern (300). The heat transfer pattern includes ridges (310) and protrusions (320), the ridges protruding a first height (H1) in a vertical direction (V), and the protrusions protruding a second height (H2) in the same vertical direction (V). The ridges (310) are arranged sequentially along ridge lines (312a, 312b, 312x). The protrusions (320) are arranged sequentially along protrusion lines (320a, 320x). The ridge lines (312a, 312b, 312x) and the protrusion lines (320a, 320x) are parallel to each other and parallel to a horizontal (H) extending plane (P) of the heat exchange plates (100, 200). The protrusion (320) is offset relative to the ridge (320) along the protrusion lines (320a, 320x). The first height (H1) is greater than the second height (H2), such that a space is formed along the protrusion lines (320a, 320x). A plate heat exchanger (1) comprising the core (10) is also disclosed.

Claims

1. A heat exchange core (10) for a plate heat exchanger (1), comprising: a first heat exchange plate (100) and a second heat exchange plate (200), the first heat exchange plate (100) and the second heat exchange plate (200) being alternately stacked in a vertical direction (V) and extending parallel to a horizontal (H) extending plane (P), wherein each of the first heat exchange plate (100) and the adjacent second heat exchange plate (200) comprises a heat exchange region (A), the heat exchange region being provided with a heat transfer pattern (300), wherein the heat transfer pattern comprises a ridge (310) and a protrusion (320), the ridge protruding a first height (H1) in the vertical direction (V), and the protrusion protruding a second height (H2) in the vertical direction (V). The ridges (310) are arranged sequentially along a first ridge line (312a) and a second ridge line (312b), wherein the ridge (310) of the first ridge line (312a) and the ridge (310) of the second ridge line (312b) are arranged opposite each other, thereby forming separate valley regions (330) between each pair of opposite ridges (310). The first ridge line (312a) and the second ridge line (312b) are parallel to each other and extend parallel to the horizontal (H) extension plane (P). The protrusions (320) are arranged sequentially along the protrusion line (320a), extending between the first ridge line (312a) and the second ridge line (312b), and are parallel to the first ridge line (312a) and the second ridge line (312b) and parallel to the horizontal (H) extension plane (P). The protrusion (320) is offset relative to the ridge (310) along the protrusion line (320a), and the first height (H1) is greater than the second height (H2), such that a space is formed along the protrusion line (320a). The first heat exchange plate (100) is joined to the second heat exchange plate (200) by means of a joint (350), each joint (350) being formed at the interface between a respective ridge (310) of the first heat exchange plate (100) and a respective valley region (330) of the second heat exchange plate (200).

2. The heat exchange core (10) of claim 1, wherein each additional valley (335) is formed between the continuous ridges (310) of the first ridge (312a) and the second ridge (312b).

3. The heat exchange core (10) of claim 2, wherein the valley area (330) and the other valley area (335) are arranged in a common valley plane (VP) that is parallel to the horizontal (H) extension plane (P).

4. The heat exchange core (10) of any one of claims 1 to 3, wherein the extension length (L) of each ridge (310) along the associated first ridge line (312a) or the second ridge line (312b) corresponds to at least 2 times, such as at least 1.5 times to 5 times, the extension width (W) of the ridge (310) transverse to the associated first ridge line (312a) or the second ridge line (312b).

5. The heat exchange core (10) of any one of the claims 1 to 3, wherein the ridge (310) of the first ridge (312a) and the ridge (310) of the second ridge (312b) are directly opposite each other.

6. The heat exchange core (10) of any one of claims 1 to 3, wherein the ridges (310) are arranged at a uniform spacing along the first ridge line (312a) and the second ridge line (312b).

7. The heat exchange core (10) of claim 6, wherein the protrusions (320) are arranged at the uniform spacing along the protrusion line (320a).

8. The heat exchange core (10) of claim 6, wherein the protrusion (320) is offset relative to the ridge (310) by half of the uniform spacing along the protrusion line (320a).

9. The heat exchange core (10) of any one of claims 1 to 3, wherein the second height (H2) corresponds to 30% to 90% of the first height (H1), such as 75% to 90%.

10. The heat exchange core (10) of any one of claims 1 to 3, wherein the first ridge (312a) and the second ridge (312b) and the protrusion (320a) extend at an angle (α) relative to the longitudinal axis (LA) of the first heat exchange plate (100) and the second heat exchange plate (200), the angle being in the range of 30 degrees to 60 degrees, such as 40 degrees to 50 degrees.

11. The heat exchange core (10) of any one of claims 1 to 3, wherein the ridge (310) is arranged sequentially along a plurality of ridge lines (312a, 312b, 312x) that are parallel to each other and extend parallel to the horizontal (H) extension plane (P).

12. The heat exchange core (10) of claim 11, wherein the protrusion (320) is arranged sequentially along a plurality of protrusion lines (320a, 320x), each protrusion line extending between a pair of adjacent ridge lines (312a, 312b, 312x) and parallel to the ridge lines (312a, 312b, 312x) and parallel to the horizontal (H) extension plane (P).

13. The heat exchange core (10) of any one of claims 1 to 3, wherein each of the first exchange plates (100) and the second exchange plates (200) includes extending through one of a pair of first through holes (150) and a pair of second through holes (160), the first through holes (150) being configured to receive and eject a first fluid, and the second through holes (160) being configured to receive and eject a second fluid.

14. The heat exchange core (10) of any one of claims 1 to 3, wherein the first heat exchange plate (100) and the second heat exchange plate (200) are of the corresponding type, and wherein the second heat exchange plate (200) is rotated 180 degrees parallel to the horizontal (H) extension plane (P).

15. A plate heat exchanger (1) comprising: a heat exchange core (10) as claimed in any one of claims 1 to 14, a first end plate (400) disposed at a first end of the heat exchange core (10) when viewed along the vertical direction (V), and a second end plate (402) disposed at a second end of the heat exchange core (10) when viewed along the vertical direction (V).

16. The plate heat exchanger (1) of claim 15, when subordinate to claim 13, wherein one of the first end plate (400, 402) and the second end plate (402) includes a first opening (170) in fluid communication with a first through hole (150), and wherein one of the first end plate (400, 402) and the second end plate (400, 402) includes a second opening (180) in fluid communication with a second through hole (160).

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