Plate heat exchanger
A plate heat exchanger includes a first plate having a first heat transfer region through which a first fluid flows, a first inlet into which the first fluid flows, and a first discharge portion through which the first fluid is discharged, and a second plate having a second heat transfer region through which a second fluid flows, a second inlet into which the second fluid flows, and a second discharge portion through which the second fluid is discharged, and stacked on the first plate. The first plate further includes a flat portion disposed to surround the first inlet portion, and the flat portion has an asymmetrical shape with respect to the first inlet.
1 . A plate heat exchanger comprising:
a first plate including:
a first heat transfer region configured to allow a first fluid to flow therethrough, the first heat transfer region having a groove;
a first inlet configured to introduce the first fluid into the first heat transfer region;
a first discharge portion configured to discharge the first fluid from the first heat transfer region; and
a flat portion surrounding the first inlet, the flat portion having an asymmetrical shape with respect to the first inlet; and
a second plate including:
a second heat transfer region configured to allow a second fluid to flow therethrough;
a second inlet configured to introduce the second fluid into the second heat transfer region; and
a second discharge portion configured to discharge the second fluid from the second heat transfer region, the second plate being stacked on the first plate,
wherein the flat portion includes:
a first region located between a center of the first inlet and the groove; and
a second region other than the first region,
wherein the second region includes:
a first boundary surface having a first end adjacent to a first end of the first plate and a second end connected to the groove; and
a second boundary surface having a first end adjacent to the first end of the first plate,
wherein a distance between the first boundary surface and the second boundary surface increases in a left-direction as the distance between the first boundary surface and the second boundary surface approaches from the first end of the first plate to the center of the first inlet,
wherein a portion of the first boundary surface has a straight-line shape, and
wherein a portion of the second boundary surface has a curved shape.
2 . The plate heat exchanger of claim 1 , wherein the first heat transfer region includes a ridge,
wherein the groove has a height difference with respect to the ridge, and
wherein the flat portion has a height difference with respect to the ridge.
3 . The plate heat exchanger of claim 2 , wherein the flat portion is located on a same plane as a bottommost point of the groove.
4 . The plate heat exchanger of claim 1 , wherein a width of the first region between the first inlet and the groove is maintained constant along a periphery of the first inlet.
5 . The plate heat exchanger of claim 1 , wherein the second region has a shape that is asymmetric in a left-right direction with respect to the center of the first inlet.
6 . The plate heat exchanger of claim 1 , wherein the first boundary surface extends in a direction perpendicular to the first end of the first plate.
7 . The plate heat exchanger of claim 1 , wherein the second boundary surface extends at an acute angle of inclination with respect to the first end of the first plate.
8 . The plate heat exchanger of claim 7 , wherein the acute angle of inclination is 25 degrees to 35 degrees.
9 . The plate heat exchanger of claim 1 , wherein the second region further includes a third boundary surface connecting the first end of the first boundary surface to the first end of the second boundary surface.
10 . The plate heat exchanger of claim 1 , wherein the first boundary surface does not overlap the first inlet in a vertical direction.
11 . The plate heat exchanger of claim 1 , wherein a portion of the second boundary surface overlaps the first inlet in a vertical direction.
12 . The plate heat exchanger of claim 1 , wherein the first plate further includes a protrusion protruding from the flat portion, the protrusion being located between the first boundary surface and the second boundary surface.
13 . The plate heat exchanger of claim 12 , wherein the protrusion overlaps the first inlet in a vertical direction.
14 . The plate heat exchanger of claim 2 , wherein the first plate further includes a first channel region connected to a first end of the first heat transfer region, the first channel region including:
the first inlet; and
a low-temperature fluid flow portion located in the first channel region, the low-temperature fluid flow portion being configured to allow the second fluid to pass therethrough, and
wherein a boundary between the first channel region and the first heat transfer region at the low-temperature fluid flow portion is inclined upward toward a side of the first plate.
15 . The plate heat exchanger of claim 1 , wherein the first heat transfer region is located between the first inlet and the first discharge portion.
16 . A plate heat exchanger comprising:
a first plate including:
a first heat transfer region configured to allow a first fluid to flow therethrough, the first heat transfer region having a groove;
a first inlet configured to introduce the first fluid into the first heat transfer region;
a first discharge portion configured to discharge the first fluid from the first heat transfer region; and
a flat portion surrounding the first inlet, a width of the flat portion between a right side and a lower side of the first inlet is greater than a width of the flat portion on the right side of the first inlet and a width of the flat portion on a left side of the first inlet; and
a second plate including:
a second heat transfer region configured to allow a second fluid to flow therethrough;
a second inlet configured to introduce the second fluid into the second heat transfer region; and
a second discharge portion configured to discharge the second fluid from the second heat transfer region, the second plate being stacked on the first plate,
wherein the flat portion includes:
a first region located between a center of the first inlet and the groove; and
a second region other than the first region,
wherein the second region includes:
a first boundary surface having a first end adjacent to a first end of the first plate and a second end connected to the groove; and
a second boundary surface having a first end adjacent to the first end of the first plate,
wherein a distance between the first boundary surface and the second boundary surface increases in a left-direction as the distance between the first boundary surface and the second boundary surface approaches from the first end of the first plate to the center of the first inlet,
wherein a portion of the first boundary surface has a straight-line shape, and
wherein a portion of the second boundary surface has a curved shape.
17 . A plate heat exchanger comprising:
a first plate including:
a first heat transfer region configured to allow a first fluid to flow therethrough, the first heat transfer region having a groove;
a first inlet configured to introduce the first fluid into the first heat transfer region;
a first discharge portion configured to discharge the first fluid from the first heat transfer region; and
a flat portion surrounding the first inlet, a width of the flat portion is maximum in a direction between a right side and a lower side of the first inlet; and
a second plate including:
a second heat transfer region configured to allow a second fluid to flow therethrough;
a second inlet configured to introduce the second fluid into the second heat transfer region; and
a second discharge portion configured to discharge the second fluid from the second heat transfer region, the second plate being stacked on the first plate,
wherein the flat portion includes:
a first region located between a center of the first inlet and the groove; and
a second region other than the first region,
wherein the second region includes:
a first boundary surface having a first end adjacent to a first end of the first plate and a second end connected to the groove; and
a second boundary surface having a first end adjacent to the first end of the first plate,
wherein a distance between the first boundary surface and the second boundary surface increases in a left-direction as the distance between the first boundary surface and the second boundary surface approaches from the first end of the first plate to the center of the first inlet,
wherein a portion of the first boundary surface has a straight-line shape, and
wherein a portion of the second boundary surface has a curved shape.