Improved plate heat exchanger

Abstract

The utility model discloses an improved plate heat exchanger which comprises a plurality of plate bodies stacked in the thickness direction of the plate heat exchanger, a first feeding port is formed in the left portion of the front portion of the top face of each plate body, a second discharging port is formed in the right portion of the front portion of a top plate of each plate body, and a first discharging port is formed in the left portion of the rear portion of the top plate of each plate body. Three supporting protruding parts or three lower protruding supporting parts are formed on the periphery of each of a first feeding port, a second discharging port, a first discharging port and the second feeding port. Therefore, two corresponding first feed ports and two corresponding second feed ports between two vertically adjacent plate bodies are pressed against each other, and supporting protruding parts and lower protruding supporting parts around the two corresponding first feed ports or the two corresponding second feed ports are pressed against each other, so that a circulation gap is formed; the strength of the two corresponding first feed ports, the two corresponding second feed ports and the strength of the plate body around the two first feed ports or the two second feed ports are enhanced, so that the plate body is not prone to deformation, and the flow and the heat exchange effect are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchanger processing equipment, and more specifically to an improved plate heat exchanger. Background Art

[0002] Plate heat exchangers are used in many refrigeration fields due to their light weight and small size. Plate heat exchangers are made up of multiple stacked plates. Two mutually isolated working fluids flow inside the plate heat exchanger. The two working fluids include refrigerant and coolant, and the two exchange heat in the plate heat exchanger.

[0003] However, the plate body in the existing plate heat exchanger is provided with four through holes, and it is necessary to ensure that a flow gap is achieved between adjacent plate bodies, between two through holes of the upper plate body and the corresponding two through holes of the lower plate body, so as to ensure that the medium in these two through holes can flow through the flow channel formed between these two plate bodies, and the plate bodies around the remaining two through holes of the upper plate body and the lower plate body need to be welded and fixed to prevent another medium from flowing through this flow channel. Among them, since there is no supporting structure around the through holes with gaps between them, it is easy for the plate body around the through holes to deform during use, affecting the flow rate and flow effect of the medium. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide an improved plate heat exchanger, wherein three supporting protrusions or three lower protruding supporting portions are formed around the first feed port, the second feed port, and the first feed port and the second feed port, so that the supporting protrusions and lower protruding supporting portions around the corresponding two first feed ports, two second feed ports, two first feed ports or two second feed ports between two upper and lower adjacent plate bodies are pressed against each other to achieve a flow gap, and at the same time, the strength of the plate body around the corresponding two first feed ports, two second feed ports, two first discharge ports or two second feed ports is enhanced so that it is not easy to deform, thereby ensuring the flow rate and heat exchange effect.

[0005] The solution of the utility model to solve the technical problem is:

[0006] An improved plate heat exchanger, comprising a plurality of plate bodies stacked in the thickness direction of the plate heat exchanger, wherein a first feed port is formed on the left portion of the front portion of the top surface of the plate body, a second discharge port is formed on the right portion of the front portion of the top plate of the plate body, a first discharge port is formed on the left portion of the rear portion of the top plate of the plate body, and a second feed port is formed on the right portion of the rear portion of the top plate of the plate body;

[0007] Among all the plates, a plurality of first circulation channels are formed between some of the plates, and a plurality of second circulation channels are formed between the remaining plates, and all of the first circulation channels and all of the second circulation channels are arranged at intervals from each other in the plate heat exchanger;

[0008] All the first circulation channels are in communication with all the first feed ports and all the first discharge ports, and all the second circulation channels are in communication with all the second feed ports and all the second discharge ports;

[0009] Among all the plate bodies, the top surface of the plate body at the first feed port and the first discharge port of the previous plate body is formed with a first groove extending downward, the bottom surface of the plate body corresponding to the first groove is formed with a first protrusion extending downward, the bottom surface of the first groove around the first feed port and the first discharge port is formed with a plurality of supporting protrusions extending upward, and the top surface of the plate body around the second feed port and the second discharge port is formed with a plurality of lower protrusion support portions extending downward;

[0010] The top surface of the plate body around the first feed port and the first discharge port of the adjacent next plate body is formed with a plurality of lower raised support portions extending downward, the top surface of the plate body at the second feed port and the second discharge port is formed with a first groove extending downward, the bottom surface of the plate body corresponding to the first groove is formed with a first raised portion extending downward, the bottom surface of the upper plate body is pressed against the top surface of the next plate body, the bottom surface of the lower raised support portion of the upper plate body is pressed against the top surface of the corresponding support raised portion of the next plate body and are welded and fixed.

[0011] The bottom surface of the lower protrusion supporting portion is a plane, and the top surface of the supporting protrusion portion is a plane.

[0012] The four edges of the plate body are all formed with bent edges extending upward, and the four bent edges are rectangular frame-shaped edges. A plurality of V-shaped grooves arranged front to back are formed in the middle of the top surface of the plate body, and the two ends of the V-shaped grooves are close to the left and right bent edges of the plate body. A V-shaped protrusion is formed on the bottom surface of the plate body corresponding to the V-shaped groove;

[0013] The V-shaped groove of the upper plate body extends forward with the tip thereof, and the V-shaped groove of the lower plate body extends backward with the tip thereof.

[0014] The top surface of the plate body between the first discharge port and the second feed port and the top surface of the plate body between the first feed port and the second discharge port are both formed with a plurality of small V-shaped grooves, and the bottom surface of the plate body corresponding to the small V-shaped grooves is formed with small V-shaped protrusions.

[0015] The tip direction of the small V-shaped groove is the same as the tip direction of the V-shaped groove on the plate body.

[0016] All small V-shaped grooves and V-shaped grooves are distributed throughout the entire plate body.

[0017] The outstanding effects of the utility model are:

[0018] Compared with the prior art, three supporting protrusions or three lower protruding supporting portions are formed around its first feed port, second discharge port, first discharge port and second feed port, so that the supporting protrusions and lower protruding supporting portions around the corresponding two first feed ports, two second discharge ports, two first discharge ports or two second feed ports between two upper and lower adjacent plates are pressed against each other to achieve a flow gap and, at the same time, enhance the strength of the plates around the corresponding two first feed ports, two second discharge ports, two first discharge ports or two second feed ports, so that they are not easily deformed, thereby ensuring the flow rate and heat exchange effect.

[0019] At the same time, the structures of all the plates are the same, and the upper plate is formed by rotating the lower plate by 180 degrees, which makes it easy to manufacture. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a top view of the utility model;

[0022] Figure 3 yes Figure 2 AA section view;

[0023] Figure 4 yes Figure 2 BB cross-sectional view;

[0024] Figure 5 It is a partial exploded schematic diagram of the utility model;

[0025] Figure 6 It is a schematic diagram of the local structure of the plate;

[0026] Figure 7 yes Figure 6 Schematic diagram of the angle-changing local structure;

[0027] Figure 8 It is a partial exploded schematic diagram between the plates of the utility model. DETAILED DESCRIPTION

[0028] For example, see Figures 1 to 8 As shown, an improved plate heat exchanger comprises a plurality of plate bodies 10 stacked along the thickness direction of the plate heat exchanger, wherein a first feed port 11 is formed at the left portion of the front portion of the top surface of the plate body 10, a second discharge port 14 is formed at the right portion of the front portion of the top plate of the plate body 10, a first discharge port 12 is formed at the left portion of the rear portion of the top plate of the plate body 10, and a second feed port 13 is formed at the right portion of the rear portion of the top plate of the plate body 10;

[0029] Among all the plate bodies 10, a plurality of first circulation channels are formed between some of the plate bodies 10, and a plurality of second circulation channels are formed between the remaining plate bodies 10, and all of the first circulation channels and all of the second circulation channels are spaced apart from each other in the plate heat exchanger; that is, a first circulation channel is formed between a plate body 10 and the plate body 10 above it, and a second circulation through hole is formed between it and the plate body 10 below it, and all of the first circulation through holes are spaced apart from the second circulation through holes.

[0030] All the first circulation channels are communicated with all the first feed ports 11 and all the first discharge ports 12, and all the second circulation channels are communicated with all the second feed ports 13 and all the second discharge ports 14;

[0031] Among all the plate bodies 10, the bottom surface of the bottommost plate body 10 is pressed against the bottommost bottom plate and fixed, and the top surface of the topmost plate body 10 is pressed against the upper connecting plate 20 and fixed by welding; the left part of the front part of the upper connecting plate 20 is formed with a first main feed port 21, the right part of the front part of the upper connecting plate 20 is formed with a second main discharge port 24, the left part of the rear part of the upper connecting plate 20 is formed with a first main discharge port 22, and the right part of the rear part of the upper connecting plate 20 is formed with a second main feed port 23;

[0032] All first feed ports 11 and first main feed ports 21 are vertically aligned and connected, the second main discharge ports 24 and all second discharge ports 14 are vertically aligned and connected, all first discharge ports 12 and first main discharge ports 22 are vertically aligned and connected, and all second feed ports 13 and second main feed ports 23 are vertically aligned and connected.

[0033] An upper connecting cover plate is fixed on the upper connecting plate 20, and through holes are formed on the left and right parts of the front part and the left and right parts of the rear part of the upper connecting cover plate. The first feed joint 31, the first discharge joint 32, the second feed joint 33 and the second discharge joint 34 are fixed on the top surface of the upper connecting cover plate and are communicated with the corresponding through holes, the first main feed port 21 is communicated with the first feed joint 31, the first main discharge port 22 is communicated with the first discharge joint 32, the second main feed port 23 is communicated with the second feed joint 33, and the second main discharge port 24 is communicated with the second discharge joint 34.

[0034] Among all the plate bodies 10, the top surface of the plate body 10 at the first feed port 11 and the first discharge port 12 of the previous plate body 10 is formed with a first groove 15 extending downward, and the bottom surface of the plate body 10 corresponding to the first groove 15 is formed with a first protrusion 16 extending downward, and the bottom surface of the first groove 15 around the first feed port 11 and the first discharge port 12 is formed with a plurality of supporting protrusions 1 extending upward, and the top surface of the plate body 10 around the second feed port 13 and the second discharge port 14 is formed with a plurality of lower protrusion support portions 2 extending downward;

[0035] The top surface of the plate body 10 around the first feed port 11 and the first discharge port 12 of the next adjacent plate body 10 is formed with a plurality of lower raised support portions 2 extending downward, the top surface of the plate body 10 at the second feed port 13 and the second discharge port 14 is formed with a first groove 15 extending downward, and the bottom surface of the plate body 10 corresponding to the first groove 15 is formed with a first raised portion 16 extending downward, the bottom surface of the previous plate body 10 is pressed against the top surface of the next plate body 10 and welded and fixed, the bottom surface of the lower raised support portion 2 of the previous plate body 10 is pressed against the top surface of the corresponding supporting raised portion 1 of the next plate body 10 and welded and fixed, the bottom surface of the lower raised support portion 2 is a plane, and the top surface of the supporting raised portion 1 is a plane, so that the welding thereof Increase, weld firmly, prevent desoldering, and the bottom surface of the lower raised support part 2 is pressed against the top surface of the corresponding supporting raised part 1 of the next plate body 10 and welded and fixed, so that a flow gap is formed between the corresponding two first feed ports 11, two first discharge ports 12, two second feed ports 13 or two second discharge ports 14, so that one of the media can flow from this flow gap to the first flow channel or the second flow channel formed between the corresponding two plate bodies 10, so as to realize the circulation of one medium. Similarly, another medium can flow from the corresponding flow gap to the second flow channel or the first flow channel formed between the corresponding two plate bodies 10, so as to realize the isolation of the two media and flow heat exchange, thereby ensuring the heat exchange effect.

[0036] Furthermore, three supporting protrusions 1 or three lower protrusion supporting portions 2 are formed at the front and outer sides of the first feed port 11 and the second discharge port 14;

[0037] Three supporting protrusions 1 or three lower protrusion support parts 2 are formed at the rear and outer sides of the first discharge port 12 and the second feed port 13. The three supporting protrusions 1 and the three lower protrusion support parts 2 are used to improve the supporting force between the corresponding two first feed ports 11, two first discharge ports 12, two second feed ports 13 or two second discharge ports 14, so that they are not easily deformed, ensuring the normal flow of the medium, and the three supporting protrusions 1 and the three lower protrusion support parts 2 can also play a diversion and guiding role for the medium. In this embodiment, one medium is a refrigerant, and the other is a cooling liquid.

[0038] Furthermore, the four sides of the plate body 10 are formed with bent edges 3 extending upward, and the four bent edges 3 are rectangular frame-shaped edges. The four bent edges 3 of the plate body 10 extend obliquely outward, and the rectangular frame-shaped edge of the upper plate body 10 is inserted into the rectangular frame-shaped edge of the lower plate body 10. The outer side wall of the rectangular frame-shaped edge of the upper plate body 10 is tightly attached to the inner side wall of the rectangular frame-shaped edge of the lower plate body 10 and welded and fixed. Among them, the four sides of the bottom plate below the bottom plate body 10 are also formed with bent edges 3 extending upward to form rectangular frame-shaped edges, and the outer side wall of the rectangular frame edge of the bottom plate body 10 is tightly attached to the inner side wall of the rectangular frame edge of the lower plate body 10. The inner side wall of the rectangular frame edge of the bottom plate is attached and welded, the top surface of the topmost plate body 10 is pressed against the upper connecting plate 20, and the four edges of the upper connecting plate 20 are also formed with upwardly extending bent edges 3 to form a rectangular frame edge, the inner side wall of the rectangular frame edge of the topmost plate body 10 is tightly attached to and welded to the outer side wall of the rectangular frame edge of the upper connecting plate 20, and the outer side wall of the upper connecting cover plate is welded to the inner side wall of the rectangular frame edge of the upper connecting plate 20, that is, the edges of all the stacked plate bodies 10, bottom plates, upper connecting plates 20 and upper connecting cover plates in this embodiment are welded and fixed to achieve edge sealing. The bottom surface of the bottom plate is also fixed with a lower mounting base plate.

[0039] Furthermore, a plurality of V-shaped grooves 4 arranged front to back are formed in the middle of the top surface of the plate body 10, the two ends of the V-shaped grooves 4 are close to the left and right bending edges 3 of the plate body 10, and a V-shaped protrusion 5 is formed on the bottom surface of the plate body 10 corresponding to the V-shaped grooves 4;

[0040] The V-shaped groove 4 of the upper plate body 10 has a tip extending forward, and the V-shaped groove 4 of the lower plate body 10 has a tip extending backward.

[0041] Furthermore, the top surface of the plate body 10 between the first discharge port 12 and the second feed port 13 and the top surface of the plate body 10 between the first feed port 11 and the second discharge port 14 are both formed with multiple small V-shaped grooves 6, and the bottom surface of the plate body 10 corresponding to the small V-shaped grooves 6 is formed with small V-shaped protrusions 7.

[0042] Furthermore, the tip direction of the small V-shaped groove 6 is the same as the tip direction of the V-shaped groove 4 on the plate body 10 .

[0043] Furthermore, all the small V-shaped grooves 6 and V-shaped grooves 4 are distributed throughout the entire plate body 10. The small V-shaped grooves 6, V-shaped grooves 4, V-shaped protrusions 5 and small V-shaped protrusions 7 enable the small V-shaped grooves 6, V-shaped grooves 4, V-shaped protrusions 5 and small V-shaped protrusions 7 on the top and bottom surfaces of the first circulation channel or the second circulation channel to form staggered circulation channels, so that the medium can flow in the circulation channel for a longer time, thereby improving the heat exchange effect and heat exchange efficiency.

[0044] In this embodiment, between two adjacent plates 10, the upper plate 10 is the position of the lower plate 10 after rotating 180°. Therefore, this embodiment can be manufactured using the same plate 10, which reduces the manufacturing difficulty and improves the manufacturing effect.

[0045] Finally, the above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The scope of patent protection of the present invention should be limited by the claims.

Claims

1. An improved plate heat exchanger, comprising a plurality of plate bodies (10) stacked along the thickness direction of the plate heat exchanger, characterized in that: A first material inlet (11) is formed on the left portion of the front portion of the top surface of the plate body (10), a second material outlet (14) is formed on the right portion of the front portion of the top plate of the plate body (10), a first material outlet (12) is formed on the left portion of the rear portion of the top plate of the plate body (10), and a second material inlet (13) is formed on the right portion of the rear portion of the top plate of the plate body (10); Among all the plate bodies (10), a plurality of first circulation channels are formed between some of the plate bodies (10), and a plurality of second circulation channels are formed between the remaining plate bodies (10), and all of the first circulation channels and all of the second circulation channels are arranged at intervals from each other in the plate heat exchanger; All the first circulation channels are in communication with all the first feed ports (11) and all the first discharge ports (12), and all the second circulation channels are in communication with all the second feed ports (13) and all the second discharge ports (14); Among all the plate bodies (10), the top surface of the plate body (10) at the first feed port (11) and the first discharge port (12) of the previous plate body (10) is formed with a first groove (15) extending downward, the bottom surface of the plate body (10) corresponding to the first groove (15) is formed with a first protrusion (16) extending downward, the bottom surface of the first groove (15) around the first feed port (11) and the first discharge port (12) is formed with a plurality of supporting protrusions (1) extending upward, and the top surface of the plate body (10) around the second feed port (13) and the second discharge port (14) is formed with a plurality of lower protrusion supporting portions (2) extending downward; The top surface of the plate body (10) around the first feed port (11) and the first discharge port (12) of the next adjacent plate body (10) is formed with a plurality of downwardly extending lower raised support portions (2), the top surface of the plate body (10) at the second feed port (13) and the second discharge port (14) is formed with a downwardly extending first groove (15), the bottom surface of the plate body (10) corresponding to the first groove (15) is formed with a downwardly extending first raised portion (16), the bottom surface of the previous plate body (10) is pressed against the top surface of the next plate body (10), the bottom surface of the lower raised support portion (2) of the previous plate body (10) is pressed against the top surface of the corresponding support raised portion (1) of the next plate body (10) and fixed by welding.

2. An improved plate heat exchanger according to claim 1, characterized in that: The bottom surface of the lower raised support portion (2) is a plane, and the top surface of the supporting raised portion (1) is a plane.

3. An improved plate heat exchanger according to claim 1, characterized in that: The front and outer sides of the first feed port (11) and the second discharge port (14) are both formed with three supporting protrusions (1) or three lower protrusion supporting portions (2); Three supporting protrusions (1) or three lower protrusion supporting portions (2) are formed at the rear and outer sides of the first discharge port (12) and the second feed port (13).

4. An improved plate heat exchanger according to claim 1, characterized in that: The four sides of the plate body (10) are all formed with bent edges (3) extending upwards, the four bent edges (3) are rectangular frame-shaped edges, a plurality of V-shaped grooves (4) arranged front to back are formed in the middle of the top surface of the plate body (10), the two ends of the V-shaped grooves (4) are close to the left and right bent edges (3) of the plate body (10), and a V-shaped protrusion (5) is formed on the bottom surface of the plate body (10) corresponding to the V-shaped grooves (4); The V-shaped groove (4) of the upper plate body (10) has a tip extending forward, and the V-shaped groove (4) of the lower plate body (10) has a tip extending backward.

5. An improved plate heat exchanger according to claim 4, characterized in that: The top surface of the plate body (10) between the first discharge port (12) and the second feed port (13) and the top surface of the plate body (10) between the first feed port (11) and the second discharge port (14) are both formed with a plurality of small V-shaped grooves (6), and the bottom surface of the plate body (10) corresponding to the small V-shaped grooves (6) is formed with small V-shaped protrusions (7).

6. An improved plate heat exchanger according to claim 5, characterized in that: The tip direction of the small V-shaped groove (6) is the same as the tip direction of the V-shaped groove (4) on the plate body (10).

7. An improved plate heat exchanger according to claim 5, characterized in that: All the small V-shaped grooves (6) and the V-shaped grooves (4) are distributed throughout the entire plate body (10).

8. An improved plate heat exchanger according to claim 1, characterized in that: The bottom surface of the bottommost plate body (10) of all the plate bodies (10) is pressed against the bottommost bottom plate, and the top surface of the topmost plate body (10) is pressed against the upper connecting plate (20); The four bent edges (3) of the plate body (10) extend obliquely outwards, the rectangular frame-shaped edge of the upper plate body (10) is inserted into the rectangular frame-shaped edge of the lower plate body (10), and the outer side wall of the rectangular frame-shaped edge of the upper plate body (10) is tightly attached to the inner side wall of the rectangular frame-shaped edge of the lower plate body (10).

9. An improved plate heat exchanger according to claim 8, characterized in that: A first main material inlet (21) is formed on the left portion of the front of the upper connecting plate (20), a second main material outlet (24) is formed on the right portion of the front of the upper connecting plate (20), a first main material outlet (22) is formed on the left portion of the rear of the upper connecting plate (20), and a second main material inlet (23) is formed on the right portion of the rear of the upper connecting plate (20); All first feed ports (11) and first main feed ports (21) are vertically aligned and communicated with each other, the second main discharge ports (24) and all second discharge ports (14) are vertically aligned and communicated with each other, all first discharge ports (12) and first main discharge ports (22) are vertically aligned and communicated with each other, and all second feed ports (13) and second main feed ports (23) are vertically aligned and communicated with each other.

10. An improved plate heat exchanger according to claim 8, characterized in that: An upper connecting cover plate is fixed to the upper connecting plate (20), and through holes are formed on the left and right parts of the front part and the left and right parts of the rear part of the upper connecting cover plate. A first feed joint (31), a first discharge joint (32), a second feed joint (33) and a second discharge joint (34) are fixed to the top surface of the upper connecting cover plate and communicate with the corresponding through holes. The first main feed port (21) communicates with the first feed joint (31), the first main discharge port (22) communicates with the first discharge joint (32), the second main feed port (23) communicates with the second feed joint (33), and the second main discharge port (24) communicates with the second discharge joint (34).

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