Plate heat exchanger with high heat exchange rate

Abstract

The high-heat-exchange-rate plate heat exchanger comprises a shell, a heating medium inlet and outlet and a refrigerant inlet and outlet are formed in the shell, the interior of the shell is hollow, the rear side face of the shell is open, and a lower limiting installation protruding part and an upper limiting installation guide plate are arranged in the shell. A plurality of first plate sheets and second plate sheets are mounted between the lower limiting mounting convex part and the upper limiting mounting guide plate in a guiding manner and are arranged in a staggered manner; a hot inlet hole, a hot outlet hole, a cold inlet hole and a cold outlet hole are formed in the first plate sheet and the second plate sheet, a hot groove communicated with the hot inlet hole and the hot outlet hole is formed in the first plate sheet, a cold groove communicated with the cold inlet hole and the cold outlet hole is formed in the second plate sheet, a hole plate is arranged in the cold inlet hole in the second plate sheet, and a shunting bulge and a groove are arranged in the cold and hot groove; a locking pressing plate is arranged at the rear end of the shell, and a pressing mechanism is arranged on the shell. According to the utility model, the installation precision and the installation sequence of the plates can be ensured, the plates can be comprehensively pressed and fixed, the heat exchanger is simple and convenient to disassemble and assemble, cold fluid can be uniformly distributed, and the heat exchange efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger technical field especially relates to a high heat transfer rate plate heat exchanger. BACKGROUND

[0002] Plate heat exchanger is by a series of heat exchange plate piece and is stacked and is formed one kind of high -efficient heat exchanger, and cold, hot different heat exchange medium passes through the plate piece and carries out heat exchange. The existing plate heat exchanger is fussy when disassembling, and the butt joint precision between the plate and the plate is difficult to guarantee, and because the outer contour modeling of the plate is usually uniform, the operator cannot judge whether the installation sequence is correct. In addition, the existing plate heat exchanger uses, because the cold fluid flowing in is usually gas-liquid two-phase, the cold fluid is unevenly distributed in the plate heat exchanger, which greatly affects the heat exchange efficiency of the heat exchanger. SUMMARY

[0003] The utility model wants to solve the technical problem to provide a high heat transfer rate plate heat exchanger, aims at solving the technical problem that the existing plate heat exchanger is fussy in prior art, the butt joint precision of the plate is difficult to guarantee and cannot judge the installation sequence, and the cold fluid in the plate heat exchanger will appear uneven distribution and affect the heat exchange efficiency.

[0004] The utility model discloses a high heat transfer rate plate heat exchanger, including the shell, the front side of shell is equipped with the heat medium import, heat medium export, cold medium import, cold medium export, the inside hollow of shell, the rear side of shell is open, the inside of shell is equipped with the lower limit installation convex part and upper limit installation guide plate for cooperation and guide plate piece installation, the lower limit installation convex part with the upper limit installation guide plate between guide installation has a plurality of first plate piece and second plate piece, the first plate piece with the second plate piece staggered arrangement, the first plate piece and the second plate piece all are equipped with hot inlet hole, hot outlet hole, cold inlet hole, cold outlet hole, and the first plate piece is equipped with the hot groove that communicates with the hot inlet hole and the hot outlet hole, and the second plate piece is equipped with the cold groove that communicates with the cold inlet hole and the cold outlet hole, and the cold inlet hole in the second plate piece is equipped with the hole plate, the hot groove with the cold groove all are equipped with the flow split convex and the recess, and a plurality of hot inlet holes are coaxially arranged and communicate with the heat medium import, a plurality of hot outlet holes are coaxially arranged and communicate with the heat medium export, a plurality of cold inlet holes are coaxially arranged and communicate with the cold medium import, and a plurality of cold outlet holes are coaxially arranged and communicate with the cold medium export, the rear end of shell is equipped with the locking press plate for fixed plate, and the shell is also equipped with the pressing mechanism for pressing the locking press plate.

[0005] Further, the lower limit installation convex part in the utility model is arranged at the bottom of the inside of the shell, the length of the lower limit installation convex part extends along the front and back direction, and the lower end of the first plate piece and the second plate piece is respectively equipped with the first installation recess that cooperates with the lower limit installation convex part.

[0006] Further, one end of the upper limiting installation guide plate is connected with the front inner wall of the shell, and the length of the upper limiting installation guide plate extends in the front-rear direction, the upper ends of the first plate piece and the second plate piece are respectively provided with transverse insertion slots matched with the upper limiting installation guide plate, and the opening directions of the transverse insertion slots on the first plate piece and the second plate piece are opposite.

[0007] Further, the directions of the flow distribution protrusions in the hot tank are parallel to the connecting line directions of the hot inlet hole and the hot outlet hole, and the directions of the grooves in the hot tank cross the connecting line directions of the hot inlet hole and the hot outlet hole.

[0008] Further, the directions of the flow distribution protrusions in the cold tank are parallel to the connecting line directions of the cold inlet hole and the cold outlet hole, and the directions of the grooves in the cold tank cross the connecting line directions of the cold inlet hole and the cold outlet hole.

[0009] Further, the lower end of the locking pressing plate is provided with a second installation groove matched with the lower limiting installation protrusion, and the upper end of the locking pressing plate is provided with an insertion hole for inserting the upper limiting installation guide plate.

[0010] Further, the pressing mechanism comprises a plurality of pressing plates arranged in an upper-lower interval, and the left and right sides of the shell are respectively provided with positioning long holes for allowing the pressing plates to pass through, and the pressing plates can slide forward and backward in the positioning long holes; the front side of the positioning long hole on the same side is provided with a vertical plate extending in a vertical direction, and the two ends of each pressing plate are fixedly connected with the vertical plates on the two sides through locking screws and locking nuts.

[0011] Further, the uppermost pressing plate is located above the upper limiting installation guide plate.

[0012] Compared with the prior art, the plate heat exchanger has the following advantages: the plate heat exchanger can guide and install the plate pieces through the upper limiting installation guide plate and the lower limiting installation protrusion matched in the shell, so that the installation precision is ensured, the opening directions of the transverse insertion slots on the first plate piece and the second plate piece are opposite, the installation sequence of the plate pieces can be judged and checked, the plate pieces can be fully pressed and fixed through the cooperation of the locking pressing plate and the pressing plate, the locking and fixing mode of the locking screw and the locking nut facilitates the disassembly and assembly of the plate heat exchanger, and the operation is simple; when the plate heat exchanger is used, the cold fluid passes through the cold inlet hole on each second plate piece, the gas phase and the liquid phase of the cold fluid are mixed more uniformly through the hole plate in the cold inlet hole, the cold fluid is evenly distributed in the plate heat exchanger, the heat exchange efficiency is improved, meanwhile, the flow distribution protrusions and the grooves designed in the cold tank and the hot tank can also increase the turbulent flow and the heat exchange area, and further improve the heat exchange efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a perspective view of the utility model;

[0014] Figure 2 is a perspective view of another angle of the utility model;

[0015] Figure 3 is a specific structure schematic view of the first plate piece in the utility model;

[0016] Figure 4 is a specific structure schematic view of the second plate piece in the utility model;

[0017] Figure 5 is an exploded schematic view of the shell and the locking pressing plate in the utility model.

[0018] Wherein: 1, shell;1a, positioning long hole;2, heat medium import;3, heat medium export;4, refrigerant import;5, refrigerant export;6, lower limit installation convex part;7, upper limit installation guide plate;8, first plate piece;8a, hot groove;9, second plate piece;9a, cold groove;10, hole plate;11, shunt convex;12, recess;13, locking pressing plate;13a, second installation recess;13b, jack;14, first installation recess;15, transverse insertion slot;16, pressing plate;17, vertical plate;18, locking screw;19, locking nut;A, hot hole;B, hot hole;C, cold hole;D, cold hole. DETAILED DESCRIPTION

[0019] The specific embodiment of the utility model is described in detail below in combination with the drawings.

[0020] Embodiment:

[0021] The specific embodiment of the utility model of a kind of high heat exchange rate plate heat exchanger shown in the drawings, refer to Figure 1 It mainly includes shell 1, the front side of shell 1 is equipped with heat medium import 2, heat medium export 3, refrigerant import 4, refrigerant export 5, heat medium import 2 and heat medium export 3 are arranged at left upper corner and right lower corner respectively, refrigerant import 4 and refrigerant export 5 are arranged at left lower corner and right upper corner respectively.

[0022] Refer to Figure 5, the rear side of the shell 1 is open, and the interior of the shell 1 is provided with a lower limiting installation protrusion 6 and an upper limiting installation guide plate 7 for matching the installation of the guide plates. The lower limiting installation protrusion 6 is arranged at the bottom of the interior of the shell 1, the length of the lower limiting installation protrusion 6 extends along the front-rear direction, the front end and the left and right ends of the lower limiting installation protrusion 6 are respectively connected with the inner wall of the shell 1, and the rear end of the lower limiting installation protrusion 6 is flush with the rear end of the shell 1. The front end of the upper limiting installation guide plate 7 is connected with the front inner wall of the shell 1, the length of the upper limiting installation guide plate 7 extends along the front-rear direction, and the rear end of the upper limiting installation guide plate 7 is flush with the rear end of the shell 1.

[0023] A plurality of first plates 8 and a plurality of second plates 9 are installed in the guide between the lower limiting installation protrusion 6 and the upper limiting installation guide plate 7, and the first plates 8 and the second plates 9 are arranged alternately. Referring to Figure 3 、 Figure 4 The lower ends of the first plates 8 and the second plates 9 are respectively provided with first installation grooves 14 matched with the lower limiting installation protrusion 6, the upper ends of the first plates 8 and the second plates 9 are respectively provided with transverse insertion slots 15 matched with the upper limiting installation guide plate 7, and the opening directions of the transverse insertion slots 15 on the first plates 8 and the second plates 9 are opposite.

[0024] When the plates are installed, the first installation grooves 14 are only needed to be aligned with the lower limiting installation protrusion 6 and the transverse insertion slots 15 are only needed to be aligned with the upper limiting installation guide plate 7, so that the plates can be installed in the guide, the installation accuracy is ensured, and the opening directions of the transverse insertion slots 15 on the first plates 8 and the second plates 9 are opposite, so that it is convenient to judge and check whether the installation sequence of the plates is correct.

[0025] Referring to Figure 3 、 Figure 4 The first plates 8 and the second plates 9 are respectively provided with hot inlet holes a, hot outlet holes b, cold inlet holes c and cold outlet holes d, the hot inlet holes a and the hot outlet holes b are respectively arranged at the upper left corner and the lower right corner, and the cold inlet holes c and the cold outlet holes d are respectively arranged at the lower left corner and the upper right corner. The first plates 8 are respectively provided with hot grooves 8a communicated with the hot inlet holes a and the hot outlet holes b, the second plates 9 are respectively provided with cold grooves 9a communicated with the cold inlet holes c and the cold outlet holes d, and the hot grooves 8a and the cold grooves 9a are respectively provided with a plurality of rows of inclined flow distribution protrusions 11 and a plurality of rows of inclined grooves 12. The directions of the flow distribution protrusions 11 in the hot grooves 8a are parallel to the connecting line directions of the hot inlet holes a and the hot outlet holes b, the directions of the grooves 12 in the hot grooves 8a are crossed with the connecting line directions of the hot inlet holes a and the hot outlet holes b; the directions of the flow distribution protrusions 11 in the cold grooves 9a are parallel to the connecting line directions of the cold inlet holes c and the cold outlet holes d, and the directions of the grooves 12 in the cold grooves 9a are crossed with the connecting line directions of the cold inlet holes c and the cold outlet holes d. The second plates 9 are respectively provided with hole plates 10 in the cold inlet holes c.

[0026] After the first plate 8 and the second plate 9 are installed in an alternating manner, multiple heat inlet holes a are coaxially arranged and connected to the heat medium inlet 2, multiple heat outlet holes b are coaxially arranged and connected to the heat medium outlet 3, multiple cold inlet holes c are coaxially arranged and connected to the refrigerant inlet 4, and multiple cold outlet holes d are coaxially arranged and connected to the refrigerant outlet 5.

[0027] Hot fluid flows in from the heat medium inlet 2 and through the heat inlet a into the heat groove 8a of each first plate 8. Under the action of the flow-dividing protrusion 11 and the groove 12, turbulence and heat exchange area are increased. After heat exchange, it flows out from the heat outlet b and is discharged from the heat medium outlet 3. Cold fluid flows in from the refrigerant inlet 4 and through the cold inlet c into the cold groove 9a of each second plate 9. The orifice plate 10 in the cold inlet c makes the gas and liquid phases of the cold fluid mix more evenly, ensuring that the cold fluid is evenly distributed in the plate heat exchanger and improving heat exchange efficiency. Under the action of the flow-dividing protrusion 11 and the groove 12, turbulence and heat exchange area are increased. After heat exchange, it flows out from the cold outlet d and is discharged from the refrigerant outlet 5.

[0028] Reference Figure 2 , Figure 5 The rear end of the outer casing 1 is also provided with a locking pressure plate 13 for fixing the plate. The lower end of the locking pressure plate 13 is provided with a second mounting groove 13a that cooperates with the lower limit mounting protrusion 6. The upper end of the locking pressure plate 13 is provided with an insertion hole 13b for the upper limit mounting guide plate 7 to be inserted. The outer casing 1 is also provided with a clamping mechanism for clamping the locking pressure plate 13. The clamping mechanism includes multiple clamping plates 16 arranged vertically at intervals. The left and right sides of the outer casing 1 are respectively provided with positioning elongated holes 1a for the clamping plates 16 to pass through. The clamping plates 16 can slide back and forth in the positioning elongated holes 1a. A vertically extending vertical plate 17 is provided on the front side of the positioning elongated hole 1a on the same side. The two ends of each clamping plate 16 are fixedly connected to the vertical plates 17 on both sides by locking screws 18 and locking nuts 19. The uppermost clamping plate 16 is located above the upper limit mounting guide plate 7.

[0029] After the plates are installed, the locking plate 13 is inserted into the housing 1 to cover the plates. Then, multiple clamping plates 16 are inserted sequentially from top to bottom. The clamping plates 16 are inserted into the positioning holes 1a on the left and right sides of the housing 1. Then, the clamping plates 16 are locked and fixed to the vertical plate 17 on one side using the locking screw 18 and locking nut 19. This achieves comprehensive clamping and fixing of the plates, and disassembly and assembly are simple and convenient. In addition, sealing gaskets are provided between adjacent plates to improve the sealing between the plates.

[0030] Of course, the above embodiments are only for illustrating the technical concept and features of this utility model, and their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All modifications made in accordance with the spirit and essence of the main technical solution of this utility model should be covered within the protection scope of this utility model.

Claims

1. A high heat transfer rate plate heat exchanger, characterized by: The application relates to a heat exchange device, which comprises a shell (1), the front side of the shell (1) is provided with a heat medium inlet (2), a heat medium outlet (3), a cold medium inlet (4) and a cold medium outlet (5), the inside of the shell (1) is hollow, the rear side of the shell (1) is open, the inside of the shell (1) is provided with a lower limiting installation convex part (6) and an upper limiting installation guide plate (7) for matching the installation of guide plates, a plurality of first plates (8) and second plates (9) are installed between the lower limiting installation convex part (6) and the upper limiting installation guide plate (7), the first plates (8) and the second plates (9) are arranged alternately, the first plates (8) and the second plates (9) are all provided with a hot inlet hole (a), a hot outlet hole (b), a cold inlet hole (c) and a cold outlet hole (d), the first plates (8) are provided with hot grooves (8a) in communication with the hot inlet holes (a) and the hot outlet holes (b), the second plates (9) are provided with cold grooves (9a) in communication with the cold inlet holes (c) and the cold outlet holes (d), the cold inlet holes (c) of the second plates (9) are provided with hole plates (10), the hot grooves (8a) and the cold grooves (9a) are all provided with flow dividing convex parts (11) and grooves (12), a plurality of hot inlet holes (a) are coaxially arranged and in communication with the heat medium inlet (2), a plurality of hot outlet holes (b) are coaxially arranged and in communication with the heat medium outlet (3), a plurality of cold inlet holes (c) are coaxially arranged and in communication with the cold medium inlet (4), and a plurality of cold outlet holes (d) are coaxially arranged and in communication with the cold medium outlet (5), the rear end of the shell (1) is provided with a locking pressing plate (13) for fixing the plates, and the shell (1) is further provided with a pressing mechanism for pressing the locking pressing plate (13).

2. A high heat transfer rate plate heat exchanger according to claim 1, characterized in that The lower limiting installation convex part (6) is arranged at the bottom of the inside of the shell (1), the length of the lower limiting installation convex part (6) extends along the front-rear direction, and the lower ends of the first plates (8) and the second plates (9) are respectively provided with first installation grooves (14) matched with the lower limiting installation convex part (6).

3. A high heat transfer rate plate heat exchanger according to claim 1, characterized in that: One end of the upper limiting installation guide plate (7) is connected with the inner wall of the front side of the shell (1), the length of the upper limiting installation guide plate (7) extends along the front-rear direction, the upper ends of the first plates (8) and the second plates (9) are respectively provided with transverse insertion grooves (15) matched with the upper limiting installation guide plate (7), and the opening directions of the transverse insertion grooves (15) on the first plates (8) and the second plates (9) are opposite.

4. A high heat transfer rate plate heat exchanger according to claim 1, characterized in that: The direction of the flow dividing convex part (11) in the hot groove (8a) is parallel to the connecting line direction of the hot inlet hole (a) and the hot outlet hole (b), and the direction of the groove (12) in the hot groove (8a) intersects with the connecting line direction of the hot inlet hole (a) and the hot outlet hole (b).

5. A high heat transfer rate plate heat exchanger according to claim 1, characterized in that: The direction of the flow dividing convex part (11) in the cold groove (9a) is parallel to the connecting line direction of the cold inlet hole (c) and the cold outlet hole (d), and the direction of the groove (12) in the cold groove (9a) intersects with the connecting line direction of the cold inlet hole (c) and the cold outlet hole (d).

6. A high heat transfer rate plate heat exchanger according to claim 1, characterized in that: The lower end of the locking pressing plate (13) is provided with a second installation groove (13a) matched with the lower limiting installation protrusion (6), and the upper end of the locking pressing plate (13) is provided with an insertion hole (13b) for inserting the upper limiting installation guide plate (7).

7. A high heat transfer rate plate heat exchanger according to claim 1, characterized in that: The pressing mechanism comprises a plurality of pressing plates (16) arranged in an upper and lower interval mode, and the left and right sides of the shell (1) are respectively provided with positioning long holes (1a) for allowing the pressing plates (16) to pass through, and the pressing plates (16) can slide forward and backward in the positioning long holes (1a); the front side of the positioning long hole (1a) on the same side is provided with a vertical plate (17) extending in a vertical mode, and the two ends of each pressing plate (16) are fixedly connected with the vertical plates (17) on the two sides through locking screws (18) and locking nuts (19).

8. A high heat transfer rate plate heat exchanger according to claim 7, characterized in that: The uppermost one of the pressing plates (16) is located above the upper limiting installation guide plate (7).

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