Bottom plate of plate heat exchanger

Abstract

The bottom plate of the plate heat exchanger comprises a rectangular plate body, and the plate body comprises flow guide areas located at the two ends of the long edge and a heat exchange area located between the flow guide areas. A heat exchange pattern arranged in a concentric rhombus structure is arranged in the heat exchange area and comprises a rhombus-shaped protrusion located in the middle, at least one rhombus-shaped convex ridge annularly arranged on the periphery of the rhombus-shaped protrusion and at least one section of turbulent flow convex ridge arranged at the two ends and provided with V-shaped parts opposite to the rhombus-shaped convex ridge. A plurality of flow guide ridges arranged at intervals are arranged in the flow guide areas at the two ends, and the adjacent flow guide ridges are matched to form flow guide channels used for forcing fluid flowing in from the upper plates to flow towards the heat exchange areas. Through the diversion ridges of the diversion area, the pressure bearing capacity of the plate body is enhanced, and fluid can be forced to flow towards the heat exchange area so as to enhance the heat exchange effect; and meanwhile, through the heat exchange pattern of the concentric rhombus structure of the heat exchange area, turbulence is effectively increased, and the heat exchange effect is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange equipment, in particular to a bottom plate of a plate heat exchanger. Background Art

[0002] Plate heat exchangers are widely used in refrigeration and heating systems for their compact structure, high heat transfer coefficient, high reliability, and low refrigerant charge. They are used as evaporators, condensers, economizers, etc. Existing plate heat exchangers are generally composed of a number of plates stacked and welded from bottom to top, where the top and bottom plates of the heat exchanger are the top plate and the bottom plate, respectively, and a joint for fluid to flow into the heat exchanger is provided on the top plate; the existing bottom plates are mostly flat plate structures, which results in the lack of heat exchange effect or poor heat exchange effect between the plates formed by the bottom plate and the upper plate. At the same time, the bottom plate is prone to bulging or even rupture and failure under the impact of the fluid flowing in from above and the hydraulic pressure, and there is room for improvement. Utility Model Content

[0003] The utility model is to overcome the defects in the above-mentioned prior art and provide a bottom plate of a plate heat exchanger, which has a simple and reasonable structure and can be conveniently stamped in one piece; at the same time, the fluid flowing into the upper plate impacts on the guide ridge in the guide area, which can not only improve the pressure bearing capacity of the bottom plate, but also force the fluid to converge to the heat exchange area through the guide groove to improve the heat exchange effect; furthermore, a heat exchange pattern with a concentric diamond structure is adopted in the heat exchange area, which can effectively increase turbulence to improve the heat exchange effect.

[0004] To achieve the above-mentioned purpose, the utility model provides a bottom plate of a plate heat exchanger, which is the lowest plate of the plate heat exchanger, and includes a stamped rectangular plate body, wherein the plate body includes guide areas located at both ends of the long sides, and a heat exchange area located between the guide areas;

[0005] The heat exchange area is provided with a heat exchange pattern arranged in a concentric diamond structure, and the heat exchange pattern includes a diamond-shaped protrusion located in the middle, at least one diamond-shaped ridge arranged around the outer periphery of the diamond-shaped protrusion, and at least one spoiler ridge arranged at both ends and having a V-shaped portion arranged opposite to the diamond corners of the diamond-shaped ridge;

[0006] A plurality of guide ridges arranged at intervals are provided in the guide areas at both ends, and guide channels for forcing the fluid flowing in from the upper plates to flow toward the heat exchange area are formed between adjacent guide ridges.

[0007] It is further configured that: the long diagonal line of the diamond-shaped protrusion is arranged parallel to the long side of the plate body.

[0008] It is further configured as follows: the spoiler ridge is a W-shaped structure and its opening is arranged toward the short side of the plate body.

[0009] It is further configured as follows: the heat exchange pattern also includes at least one V-shaped ridge located between the spoiler ridges at both ends and arranged on both sides close to the long side, the two sides of the V-shaped ridge are respectively parallel to the side edges of the W-shaped spoiler ridges at both ends, and the line connecting the vertices of the V-shaped ridges on both sides opposite to each other is collinear with the short diagonal line of the diamond-shaped protrusion.

[0010] It is further configured that: the plurality of guide ridges in the guide area are all arranged parallel to the long sides of the plate body.

[0011] Compared with the prior art, the utility model has a simple and reasonable structure and can be conveniently formed by integral stamping; at the same time, the fluid flowing into the upper plate impacts the guide ridge in the guide area, which not only improves the pressure bearing capacity of the bottom plate, but also forces the fluid to converge to the heat exchange area through the guide groove to improve the heat exchange effect; furthermore, a heat exchange pattern with a concentric diamond structure is adopted in the heat exchange area, which can effectively increase turbulence to improve the heat exchange effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a three-dimensional structural schematic diagram of a bottom plate of a plate heat exchanger.

[0013] The following reference numerals are marked on the drawings in conjunction with the drawings:

[0014] 1. Plate body; 11. Heat exchange area; 111. Diamond-shaped protrusions; 112. Diamond-shaped ridges; 113. Spoiler ridges; 114. V-shaped ridges; 12. Guide area; 121. Guide ridges; 122. Guide channels. DETAILED DESCRIPTION

[0015] A specific implementation of the present utility model is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present utility model is not limited by the specific implementation mode.

[0016] The utility model discloses a bottom plate of a plate heat exchanger Figure 1 As shown, the bottom plate is the stainless steel plate at the bottom of the plate heat exchanger, which includes a rectangular plate body 1 formed by integral stamping, so that the bottom plate can be easily manufactured; at the same time, it is defined that the two sides of the plate body 1 relative to the long side are the two ends, and the two sides of the plate body 1 relative to the short side are the two sides.

[0017] In this embodiment, the plate body 1 of the bottom plate includes a guide area 12 located at both ends of the long side, and a heat exchange area 11 located between the guide areas 12, and the guide areas 12 at both ends are centrally symmetrically arranged on the plate body 1; wherein the guide area 12 is used to receive the fluid flowing into the upper plate and force the fluid to flow to the heat exchange area 11 for efficient heat exchange; the heat exchange area 11 has a heat exchange pattern, and the turbulence is enhanced by the heat exchange pattern to improve the heat exchange effect.

[0018] In this embodiment, if Figure 1 As shown, the heat exchange pattern of the heat exchange area 11 is specifically a concentric diamond structure composed of multiple diamond structures, which includes a diamond-shaped protrusion 111 located in the middle of the heat exchange area 11, at least one diamond-shaped ridge 112 arranged around the outer periphery of the diamond-shaped protrusion 111, and at least one spoiler ridge 113 provided at both ends of the diamond-shaped ridge 112 and having a V-shaped portion arranged opposite to the water chestnut corners of the diamond-shaped ridge 112, at least one spoiler ridge 113 is nested with each other at intervals, and the V-shaped portion and the water chestnut corners of the diamond-shaped ridge 112 are nested with each other at intervals, so that The diamond-shaped protrusion 111 in the center constitutes the central diamond of the concentric diamond structure, at least one diamond-shaped ridge 112 constitutes the inner diamond of the concentric diamond structure, and the V-shaped portions arranged relatively on the spoiler ridges 113 at both ends cooperate to constitute the outer diamond of the concentric diamond structure; preferably, the center of the diamond-shaped protrusion 111 coincides with the center of the heat exchange zone 11 and the long diagonal line of the diamond-shaped protrusion 111 is arranged parallel to the long side of the plate body 1, so that the heat exchange pattern in the heat exchange zone 11 is arranged symmetrically to the center, which is more conducive to the arrangement of the heat exchange pattern and to enhancing the heat exchange effect.

[0019] In this embodiment, the spoiler ridge 113 is preferably a symmetrical W-shaped structure with its opening facing the short side of the plate body 1, so that the V-mouths at the inner ends of the W-shaped spoiler ridge 113 arranged facing each other at both ends cooperate to form an outer diamond.

[0020] In this embodiment, the heat exchange pattern also includes at least one V-shaped ridge 114 located between the innermost spoiler ridges 113 at both ends and arranged on both sides close to the long side. At least one V-shaped ridge 114 is nested with a spacing, and at the same time, the two sides of the V-shaped ridge 114 on both sides are respectively parallel to the outermost side edges of the W-shaped spoiler ridges 113 at both ends, and the line connecting the vertices of the V-shaped ridges 114 on both sides is collinear with the short diagonal line of the diamond-shaped protrusion 111.

[0021] In this embodiment, the patterns on the guide areas 12 at both ends are arranged symmetrically relative to the center of the plate body 1, and each guide area 12 is provided with a plurality of guide ridges 121 extending from the end to the middle and arranged at intervals. Two adjacent guide ridges 121 cooperate to form a guide channel 122 for forcing the fluid flowing in from the opening of the upper plate to flow toward the heat exchange area 11, which can be more conducive to the fluid at both ends to converge to the heat exchange area 11 to improve the heat exchange effect. Preferably, the plurality of guide ridges 121 are parallel to the long sides of the plate body 1; at the same time, the fluid flowing into the upper plate body 1 impacts the guide ridges 121, which can effectively improve the pressure bearing capacity of the bottom plate.

[0022] Compared with the prior art, the utility model has a simple and reasonable structure and can be conveniently formed by integral stamping; at the same time, the fluid flowing into the upper plate impacts the guide ridge in the guide area, which not only improves the pressure bearing capacity of the bottom plate, but also forces the fluid to converge to the heat exchange area through the guide groove to improve the heat exchange effect; furthermore, a heat exchange pattern with a concentric diamond structure is adopted in the heat exchange area, which can effectively increase turbulence to improve the heat exchange effect.

[0023] The above disclosure is only an embodiment of the present invention, but the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A bottom plate of a plate heat exchanger, characterized in that: It is the lowest plate of the plate heat exchanger, including a stamped rectangular plate body, wherein the plate body includes flow guide areas at both ends of the long side and a heat exchange area between the flow guide areas; The heat exchange area is provided with a heat exchange pattern arranged in a concentric diamond structure, and the heat exchange pattern includes a diamond-shaped protrusion located in the middle, at least one diamond-shaped ridge arranged around the outer periphery of the diamond-shaped protrusion, and at least one spoiler ridge arranged at both ends and having a V-shaped portion arranged opposite to the diamond corners of the diamond-shaped ridge; A plurality of guide ridges arranged at intervals are provided in the guide areas at both ends, and guide channels for forcing the fluid flowing in from the upper plates to flow toward the heat exchange area are formed between adjacent guide ridges.

2. The bottom plate of a plate heat exchanger according to claim 1, characterized in that: The long diagonal line of the diamond-shaped protrusion is arranged in parallel with the long side of the plate body.

3. The bottom plate of a plate heat exchanger according to claim 2, characterized in that: The spoiler ridge is a W-shaped structure and its opening is arranged toward the short side of the plate body.

4. The bottom plate of a plate heat exchanger according to claim 3, characterized in that: The heat exchange pattern also includes at least one V-shaped ridge located between the spoiler ridges at both ends and arranged on both sides close to the long side, the two sides of the V-shaped ridge are respectively parallel to the side edges of the W-shaped spoiler ridges at both ends, and the line connecting the vertices of the V-shaped ridges on both sides opposite to each other is collinear with the short diagonal line of the diamond-shaped protrusion.

5. The bottom plate of a plate heat exchanger according to claim 1, characterized in that: The plurality of guide ridges in the guide area are all arranged parallel to the long sides of the plate body.

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