CN116412708A

CN116412708A - Plate heat exchanger

Info

Publication number: CN116412708A
Application number: CN202111659339.9A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Shaoxing Sanhua New Energy Auto Parts Co ltd
Current assignee: Shaoxing Sanhua New Energy Auto Parts Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2023-07-11

Abstract

The utility model provides a plate heat exchanger, including a plurality of stacked plates, the plate that forms first circulation passageway includes first upper plate, first lower plate, and first upper plate sets up first vortex recess, and first lower plate sets up first vortex arch, and first point ripples post is produced by the contact of the corresponding siding of first vortex recess, the protruding siding of corresponding of first vortex, and at least one of the first vortex recess degree of depth of first upper plate, the protruding degree of depth of first vortex of first lower plate is less than the height of point ripples post, and this kind of plate heat exchanger, weight is less relatively.

Description

Plate heat exchanger

Technical Field

The invention relates to the technical field of heat exchange, in particular to a plate heat exchanger.

Background

Plate heat exchangers are commonly used for heat exchange of two fluids. The heat exchange between the cooling liquid of the cooling system and the refrigerant usually takes place by means of a plate heat exchanger. Under the heat exchange design working condition, the cooling system generally has corresponding requirements on the heat exchange efficiency and the pressure drop of the plate heat exchanger. Based on the trend of pursuing light weight, how to reduce the weight of the plate heat exchanger on the premise of meeting the heat exchange performance is a technical problem to be solved urgently in the technical field of heat exchangers.

In order to enhance the heat exchange capacity of a plate heat exchanger, turbulence structures, such as point corrugations, are usually arranged inside the channels. The processing of the point corrugations is performed in a stamping manner, and the thickness of the plate at the point corrugations is reduced due to the expansion of the plate. The depth of the point corrugation is generally consistent with the height of the plate-to-plate flow channels of the plate heat exchanger, and the height of the plate-to-plate flow channels of the plate heat exchanger is limited by the heat exchange performance requirement under a specific design working condition, so that the plate thickness of the plate heat exchanger has a certain requirement. If the thickness of the plate is insufficient, when the point corrugation is formed by stamping, the thickness of the plate at the point corrugation is completely possibly too small due to the too large depth of the point corrugation, and penetration is easily caused during welding. If the thickness of the plate is selected based on the strength of the wall thickness at the point corrugation after stamping, the weight of the plate heat exchanger will be greatly increased.

Disclosure of Invention

The invention aims to provide a plate heat exchanger which is favorable for light weight.

An embodiment of the invention provides a plate heat exchanger, which comprises a plurality of stacked plates, and is characterized in that the plate heat exchanger comprises a first flow channel and a second flow channel which are relatively not communicated, the plate heat exchanger is provided with a first point wave column, at least part of the first point wave column is positioned in the first flow channel, the plates defining the first flow channel comprise a first upper plate and a first lower plate, the first upper plate is provided with a first turbulence groove, the first lower plate is provided with a first turbulence protrusion, the first point wave column comprises a plate wall corresponding to the first turbulence groove and a plate wall corresponding to the first turbulence protrusion, the plate wall corresponding to the first turbulence groove and the plate wall corresponding to the first turbulence protrusion are welded and fixed, and at least one of the depth of the first turbulence groove of the first upper plate and the depth of the first turbulence protrusion of the first lower plate is smaller than the height of the point wave column.

The plate heat exchanger is provided with a first point wave column, at least part of the first point wave column is positioned in the first flow channel, the first point wave column comprises a plate wall corresponding to a first turbulence groove and a plate wall corresponding to a first turbulence protrusion which are welded and fixed, the first turbulence groove depth of the first upper plate sheet and the first turbulence protrusion depth of the first lower plate sheet are smaller than the height of the point wave column, namely, the first turbulence groove depth of the first upper plate sheet and the first turbulence protrusion depth of the first lower plate sheet are smaller than the height of the first flow channel, so that the depth of a groove or protrusion on the plate is smaller, the stamping depth is reduced (the extension and stretching degree is reduced), and under the requirement of the same strength (the thickness during processing forming), the original thickness of the plate wall (the thickness before the plate sheet is stamped) can be reduced, so that the lightening of the plate heat exchanger is facilitated.

Drawings

FIG. 1 is a schematic view of a perspective view of one embodiment of a plate heat exchanger of the present invention;

FIG. 2 is a schematic top view of the plate heat exchanger of FIG. 1;

FIG. 3 is a schematic view of the partial structure of FIG. 2 taken along the A-A direction;

fig. 4 is a schematic view of the plate structure of the plate heat exchanger of the present invention.

Detailed Description

Specific embodiments will now be described in detail with reference to the accompanying drawings. For a complete understanding of the present invention, numerous specific details are set forth in the following detailed description, but it should be understood by those skilled in the art that the specific components, devices, and features illustrated in the drawings and described herein are merely exemplary and should not be construed as limiting.

Fig. 1 illustrates a plate heat exchanger 10 comprising a number of stacked plates 11. The plate comprises an edge portion 115 and a main body portion 116, and the edge portion 115 is tilted relative to the main body portion 116.

As shown in fig. 2, the plates 11 are stacked to form a fluid channel comprising first and

second flow channels

12, 13, the first and

second flow channels

12, 13 alternating in the vertical plate heat exchanger direction (direction indicated by the arrow in fig. 1).

The plate heat exchanger 10 is provided with a first spot beam 14 and a second spot beam 15. The first and

second spot beams

14, 15 may have an oblong or circular cross section.

The plates defining the first flow channels 12 are referred to as first upper plates 121, first lower plates 122, and the plates defining the second flow channels 13 are referred to as second upper plates 131, second lower plates 132. It should be noted that, in addition to the side plates, the other plates are provided with a first flow channel on one side and a second flow channel on the other side, so that the first upper plate of the first flow channel is the second lower plate 132 of a certain second flow channel, and the first lower plate 122 of the first flow channel is the second upper plate of a certain second flow channel.

The position of the plate 11 relative to the original plate wall, where it is not raised or recessed, is defined as the flat portion 20 of the plate 11. The height of the first flow channels refers to the distance between the first upper plate 121 flat and the first lower plate 122 flat. The height of the second flow channels refers to the distance between the flat portion of the second upper plate 131 and the flat portion of the second lower plate 132.

The first upper plate 121 is provided with a first turbulence groove 123, the first lower plate 122 is provided with a first turbulence protrusion 124, and the panel wall corresponding to the first turbulence groove 123 and the panel wall corresponding to the first turbulence protrusion 124 are contacted to generate the first point wave pillar 14. Therefore, the depth D1 of the first spoiler groove 123 of the first upper plate 121 and the depth D2 of the first spoiler protrusion 124 of the first lower plate 122 are smaller than the height of the one-point wave pillar, i.e., the depth D1 of the first spoiler groove 123 of the first upper plate 121 and the depth D2 of the first spoiler protrusion 124 of the first lower plate 122 are smaller than the height H1 of the first flow channel. Therefore, in the case of the same height of the first flow channels, thinner plates can be used, which is advantageous for the weight saving of the plate heat exchanger. In other embodiments, the depth D1 of the first spoiler groove 123 and the depth D2 of the first spoiler protrusion 124 of the first lower plate 122 may be smaller than the height of the first point wave pillar, which will not be described in detail.

The corresponding panel wall of the first spoiler groove 123 includes a first groove platform 125; the corresponding panel wall of the first spoiler bulge 124 comprises a first bulge platform 126.

The depth of the first spoiler grooves 123 is not more than three times the thickness of the edge portion, and the depth of the first spoiler protrusions 124 is not more than three times the thickness of the edge portion. Thus, the probability of penetration phenomenon during welding can be effectively reduced.

The second upper plate 131 is provided with a second turbulence groove 133, the second lower plate 132 is provided with a second turbulence protrusion 134, and the corresponding plate walls of the second turbulence groove 133 and the corresponding plate walls of the second turbulence protrusion 134 are contacted to generate a second point wave pillar 15. The second turbulence groove depth of the second upper plate and the second turbulence protrusion depth of the second lower plate are smaller than the height of the second point wave column, namely, the second turbulence groove depth of the second upper plate and the second turbulence protrusion depth of the second lower plate are smaller than the height of the second circulation channel. In other embodiments, the depth of the second spoiler grooves and the depth of the first spoiler protrusions of the second lower plate may be smaller than the height of the first point wave pillars, which will not be described in detail.

The corresponding panel wall of the second spoiler groove 133 comprises a second groove platform 135; the corresponding panel wall of the second spoiler bulge 134 includes a second bulge platform 136.

The depth of the second spoiler grooves 133 is not more than three times the thickness of the edge portion, and the depth of the second spoiler protrusions 134 is not more than three times the thickness of the edge portion.

The flat portion 20 of the first lower plate 122 has a wall thickness not less than one-half the thickness of the edge portion. The flat portion 20 of the second lower plate 132 has a wall thickness not less than one-half the thickness of the edge portion.

Thus, the probability of penetration phenomenon during welding can be effectively reduced. The original panel wall refers to a panel wall when the panel sheet is not processed, and the panel wall at the position corresponding to the flat part is thinned relative to the original panel wall when the first turbulence convex, the first turbulence concave, the second turbulence convex and the second turbulence concave are processed, but the thinning is not regarded as the convex or concave in the text.

It should be noted that, the specific differences between the flat portion of the first lower plate and the flat portion of the second upper plate in the drawings and the description herein do not indicate that the flat portion of the first lower plate and the flat portion of the second lower plate are completely identical, but in the actual application process, they may be inconsistent as required, and the thicknesses may also be inconsistent.

The first turbulence convex parts and the second turbulence concave parts of the same first lower plate are alternately arranged front and back and left and right, and the first turbulence concave parts and the second turbulence convex parts of the same first upper plate are alternately arranged front and back and left and right.

Fig. 4 is a schematic view of the plate 11, where the plate 11 includes a first hole 111, a second hole 112, a third hole 113, and a fourth hole 114, the first turbulence protrusions 124 and the second turbulence grooves 133 of the same first lower plate are respectively and alternately arranged around the circumferences of the first hole 111, the second hole 112, the third hole 113, and the fourth hole 114 (only the structure of the circumferences of the first hole 111 is identified in fig. 4, the circumferences of the second hole 112, the third hole 113, and the fourth hole 114 are similar to the circumferences of the first hole, and are not identified), and the first turbulence grooves 123 and the second turbulence protrusions 134 of the same first upper plate are respectively and alternately arranged around the circumferences of the first hole 111, the second hole 112, the third hole 113, and the fourth hole 114.

In other embodiments, the top surfaces of the first spoiler protrusion, the first spoiler groove, the second spoiler protrusion and the second spoiler groove are all arc surfaces.

It should be noted that: the above embodiments are provided for the purpose of naming only, and are not intended to limit the present invention, but rather are not limited to the technical solutions described in the present invention, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention can be modified or equivalent replaced by those described in the art, and all technical solutions and modifications thereof without departing from the spirit and scope of the present invention are included in the scope of the claims of the present invention.

Claims

1. The utility model provides a plate heat exchanger, includes a plurality of stacked plates, its characterized in that, plate heat exchanger includes first circulation passageway, the second circulation passageway that is not relatively connected, plate heat exchanger sets up first vortex groove, first lower plate, the definition forms the plate of first circulation passageway includes first upper plate, first upper plate sets up first vortex recess, at least part first vortex pillar is located first circulation passageway, first lower plate sets up first vortex arch, first vortex pillar includes the slab wall that first vortex recess corresponds the slab wall that first vortex arch corresponds, the slab wall that first vortex recess corresponds with the slab wall welded fastening that first vortex arch corresponds, at least one of first vortex recess degree of depth of first upper plate, first vortex protruding degree of depth of first lower plate is less than the height of one point wave pillar.

2. A plate heat exchanger according to claim 1, wherein the plate heat exchanger comprises a second spot wave column, at least part of the second spot wave column is located in a second flow channel, the plates defining the second flow channel comprise a second upper plate and a second lower plate, the second upper plate is provided with a second turbulence groove, the second lower plate is provided with a second turbulence protrusion, the second spot wave column comprises a plate wall corresponding to the second turbulence groove and a plate wall corresponding to the second turbulence protrusion, the plate wall corresponding to the second turbulence groove and the plate wall corresponding to the second turbulence protrusion are welded and fixed, and at least one of the first turbulence groove depth of the first upper plate and the first turbulence protrusion depth of the first lower plate is smaller than the height of the first spot wave column.

3. A plate heat exchanger according to claim 3, wherein the plates comprise an edge portion, a body portion, the edge portion being raised with respect to the body portion, the position defining the first lower plate being non-convex or concave with respect to the original plate being a flat portion of the first lower plate, the wall thickness of the flat portion of the first lower plate being not less than half the thickness of the edge portion.

4. A plate heat exchanger according to any one of claims 1-3, wherein the plate comprises an edge portion, a body portion, the edge portion being tilted with respect to the body portion, the first spoiler grooves having a depth not greater than three times the thickness of the edge portion, the first spoiler protrusions having a depth not greater than three times the thickness of the edge portion.

5. A plate heat exchanger according to claim 1, wherein the plate comprises an edge portion, a body portion, the edge portion being raised with respect to the body portion, the position defining the second lower plate being non-convex or concave with respect to the original plate being a flat portion of the second lower plate, the wall thickness of the flat portion of the second lower plate being not less than half the thickness of the edge portion.

6. A plate heat exchanger according to claim 5, wherein the depth of the second spoiler grooves is not more than three times the thickness of the edge portion, and the depth of the second spoiler protrusions is not more than three times the thickness of the edge portion.

7. A plate heat exchanger according to any one of claims 1-6, wherein the first spot beam has an oblong cross-section; the top surfaces of the first turbulence convex, the first turbulence concave, the second turbulence convex and the second turbulence concave are all arc surfaces.

8. A plate heat exchanger according to claim 7, wherein the second spot-wave column has an oblong cross-section.

9. A plate heat exchanger according to claim 1, 5 or 6, wherein the first and second spoiler grooves of the same first lower plate are alternately arranged front and back and left and right, and the first and second spoiler grooves of the same first upper plate are alternately arranged front and back and left and right.

10. A plate heat exchanger according to claim 9, wherein the plates comprise a first porthole, a second porthole, a third porthole and a fourth porthole, wherein the first turbulence protrusions and the second turbulence protrusions of the same first lower plate are arranged alternately around parts of the circumferences of the first porthole, the second porthole, the third porthole and the fourth porthole, respectively, and the first turbulence protrusions and the second turbulence protrusions of the same first upper plate are arranged alternately around parts of the circumferences of the first porthole, the second porthole, the third porthole and the fourth porthole, respectively.