WO2020238781A1 - Échangeur de chaleur à plaques - Google Patents

Échangeur de chaleur à plaques Download PDF

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Publication number
WO2020238781A1
WO2020238781A1 PCT/CN2020/091712 CN2020091712W WO2020238781A1 WO 2020238781 A1 WO2020238781 A1 WO 2020238781A1 CN 2020091712 W CN2020091712 W CN 2020091712W WO 2020238781 A1 WO2020238781 A1 WO 2020238781A1
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WO
WIPO (PCT)
Prior art keywords
plate
sub
channel
port
heat exchanger
Prior art date
Application number
PCT/CN2020/091712
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English (en)
Chinese (zh)
Inventor
李华
郑希茹
Original Assignee
浙江三花智能控制股份有限公司
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Application filed by 浙江三花智能控制股份有限公司 filed Critical 浙江三花智能控制股份有限公司
Publication of WO2020238781A1 publication Critical patent/WO2020238781A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning

Definitions

  • the present invention relates to the field of heat exchange technology, in particular to a plate heat exchanger.
  • 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 plates stacked. Two isolated working fluids flow inside the plate heat exchanger. The quality includes refrigerant and carrier refrigerant, and the two exchange heat in the plate heat exchanger. One way that the inventor knows is that the refrigerant enters the plate heat exchanger by entering along one side of the length of the plate heat exchanger, and then leaving from the other side. The plate heat exchanger is used for the pipeline connecting with external components. Distributed on both sides of the length of the plate heat exchanger, the supporting pipelines of the plate heat exchanger occupy a large space.
  • the structure of the plate heat exchanger provided by the present application is beneficial to reduce the space occupied by the supporting pipelines of the plate heat exchanger.
  • the embodiment of the present application provides a plate heat exchanger, which includes a heat exchange core and an integrated part located on one side of the thickness direction of the heat exchange core; the heat exchange core includes a plurality of stacked plates, so The multiple plates include multiple first plates, multiple second plates, and one third plate; multiple plates are stacked to form a first flow channel and a second flow channel that are not connected; the first plate and The second plate includes a first orifice, a second orifice, a third orifice, and a fourth orifice; the third plate includes a second orifice, a third orifice, and a fourth orifice; where each The first hole of the first plate and the first hole of each of the second plates at least partly form a first hole; the second, third, and fourth holes of each of the first plates, each The second, third, and fourth orifices of the second plate and the second, third, and fourth orifices of the third plate respectively at least partially form a second channel, a third channel, and a fourth channel;
  • the integrated piece includes a fitting piece and a draft tube, the fitting piece has a first cavity, the fitting piece is also provided with a first port and a second port communicating with the first cavity, the first port communicating The first cavity and the first sub-channel, and the second port is used for connecting external components;
  • the draft tube has a second cavity, and the draft tube is also provided with a fourth port and a fifth port communicating with the second cavity;
  • the draft tube includes a first fixed connection with the fitting piece.
  • the tube portion, and the second tube portion extending from the first tube portion through the first cavity and from the first port into the first channel;
  • the fourth port is provided in the first tube portion;
  • the fourth port is used for Butt the external components;
  • the first blocking portion and the second pipe portion are fixedly connected and sealed at the connection, so that the second sub-channel is separated from the first sub-channel, and the fifth port is provided at In the second tube portion, the fifth port communicates with the second cavity and the second sub-channel.
  • the plate heat exchanger of the present application includes an integrated part.
  • the integrated part has a second port and a fourth port for connecting external components, so that the integrated part can simultaneously meet the function of importing and exporting fluid in the first flow channel, which is beneficial to optimization
  • the integrated part includes a matching part and a flow guide tube, the flow guide tube includes a first tube part fixedly connected with the matching part, and a A cavity extends from the first port into the second pipe part of the first channel, and the integrated piece occupies a small space.
  • Figure 1 is a schematic diagram of a three-dimensional structure of the plate heat exchanger of the application
  • FIG 2 is a schematic cross-sectional view of the plate heat exchanger shown in Figure 1 of this application;
  • FIG 3 is an exploded view of the plate heat exchanger shown in Figure 1 of this application;
  • Figure 4 is a schematic diagram of oblique convection of the plate heat exchanger of the application.
  • Fig. 5 is a schematic diagram of the fixing method of the guide tube and the first blocking part of the plate heat exchanger of the present application
  • Fig. 6 is an enlarged schematic diagram of the structure of the fixing method of the plate heat exchanger fitting and the first side plate of the application;
  • FIG. 7 is a schematic diagram of another cross-sectional structure of the plate heat exchanger of this application.
  • FIG. 8 is a schematic diagram of another cross-sectional structure of the plate heat exchanger of the application.
  • Fig. 9 is a schematic diagram of the fixing method of the mating parts of the plate heat exchanger in Fig. 1 of this application;
  • Figure 10 is a schematic diagram of the upper shell structure of the plate heat exchanger in Figure 9;
  • Figure 11 is a schematic diagram of the lower shell structure of the plate heat exchanger in Figure 9;
  • Figure 12 is a schematic diagram of a flow path of the plate heat exchanger of the present invention as an evaporator
  • Figure 13 is a schematic diagram of another flow path of the plate heat exchanger of the present invention as an evaporator
  • Figure 14 is a schematic diagram of a flow path of the plate heat exchanger of the present invention as a condenser
  • Fig. 15 is a schematic diagram of another flow path of the plate heat exchanger of the present invention as a condenser.
  • the plate heat exchanger provided in this application optimizes the inlet and outlet of the fluid in the plate heat exchanger and cooperates with the design of the two-pass flow channel in the plate heat exchanger, which is beneficial to optimize the installation space occupied by the supporting pipelines of the plate heat exchanger. Improve the heat exchange effect of the plate heat exchanger.
  • the plate heat exchanger 100 includes a heat exchange core and an integrated part.
  • the heat exchange core includes a plurality of plates 101.
  • the plates 101 are roughly rectangular in shape.
  • a first plate 1011, a plurality of second plates 1012, and a third plate 1013, a plurality of plates 101 are stacked to form a first flow channel and a second flow channel, the first flow channel and the second flow channel are not connected .
  • the first plate 1011 and the second plate 1012 each include a first orifice 1, a second orifice 2, a third orifice 3, and a fourth orifice 4.
  • the third plate 1013 includes a second orifice 2, a second orifice Three orifices 3, and a fourth orifice 4.
  • the first apertures 1 of the plurality of first plates 1011 and the first apertures 1 of the plurality of second plates 1012 at least partially oppose each other to form a first channel 103, and the third plate 1013 also includes a first blocking portion 13, At least part of the first blocking portion 13 is located in the first channel 103, the first blocking portion 13 is provided with a second mounting hole 131, and the size of the second mounting hole 131 is smaller than the size of the first hole 1.
  • the first channel 103 includes a first sub-channel 123 and a second sub-channel 124 located on both sides of the first blocking portion 13, and the first sub-channel 123 is closer to the integrated component than the second sub-channel 124.
  • the second orifice 2 of the first plate 1011, the second orifice 2 of the second plate 1012 and the second orifice 2 of the third plate 1013 are stacked to form the second channel 104.
  • the third aperture 3 of the first plate 1011, the third aperture 3 of the second plate 1012, and the third aperture 3 of the third plate 1013 at least partially form a third channel.
  • the fourth orifice 4 of the first plate 1011, the fourth orifice 4 of the second plate 1012, and the fourth orifice 4 of the third plate 1013 are at least partially opposed to form a fourth channel.
  • the first sub-channel 123, the second sub-channel 124, and the second channel 104 all belong to a part of the first flow channel.
  • the third channel and the fourth channel are part of the second flow channel.
  • the first flow path also includes a first inter-board channel 102, the first inter-board channel 102 is divided into a first inter-sub-board channel 1021 and a second inter-sub-board channel 1022 by a third plate 1013, and the first inter-board channel 1021 is connected
  • the direction is opposite.
  • the second flow channel includes a second inter-plate passage, and the second inter-plate passage is not connected to the first inter-plate passage.
  • the plate heat exchanger 100 also includes integrated parts.
  • the integrated piece includes a fitting piece 11 and a draft tube 12.
  • the fitting piece 11 is located on one side in the thickness direction of the heat exchange core.
  • the fitting piece 11 has a first cavity 110, and the fitting piece 11 is also provided with a first cavity 110 communicating with the first cavity 110.
  • the first cavity 110 communicates with the first sub-channel 123 through the first port 111, the first cavity 110 communicates with the first sub-channel 123 directly, that is, one side of the first port 111 is the first One cavity 110, the other side is the first sub-channel 123, the first cavity 110 communicates with the outside of the plate heat exchanger 100 through the second port 112, the first cavity 110 communicates with the outside of the plate heat exchanger 100 directly, That is, one side of the second port 112 is the first cavity, and the other side is the outside of the plate heat exchanger 100.
  • the second port 112 is used to interface with external components.
  • the draft tube 12 includes a second cavity 120.
  • the draft tube 12 has a fourth port 121 and a fifth port 122 communicating with the second cavity 120.
  • the second cavity 120 communicates with the outside of the plate heat exchanger 100 through the fourth port 121 .
  • the second cavity 120 communicates with the outside of the plate heat exchanger 100 directly, that is, one side of the fourth port 121 is the second cavity 120, and the other side is the outside of the plate heat exchanger 100.
  • the guide tube 12 includes a first tube 1201 fixedly connected to the fitting 11 and a second tube 1202 extending from the first tube 1201 through the first cavity 110 and extending from the first port 111 into the first channel 103.
  • the fourth port 121 is provided in the first pipe portion 1201, and the fourth port 121 is used for docking with external components.
  • the first blocking portion 13 and the second pipe portion 1202 are circumferentially welded and fixedly connected, and are sealed at the joint so that the second sub-channel 124 is separated from the first sub-channel 123, and the fifth port 122 is provided in the second pipe portion 1202 , The fifth port 122 communicates with the second cavity 120 and the second sub-channel 124.
  • the direction is approximately vertical, and the second tube portion 1202 of the draft tube 12 passes through the first cavity 110 It extends to the first sub-hole 123 through the first port 111, and the first cavity 110 is separated from the second cavity 120.
  • the second cavity 120 communicates with the second sub-channel 124 through the fifth port 122.
  • the draft tube 12 penetrates the first cavity 110 along its axial direction. A part of the draft tube 12 is located in the first cavity 110. One end of the draft tube 12 extends into the first sub-hole 123, and the other end faces the outside of the plate heat exchanger 100. Set, the draft tube 12 is fixedly connected to the mating part 11 through its first tube portion 1201, and the first cavity 110 of the mating part 11 communicates with the first sub-channel 103 through the first port 111, so that the draft tube 12 A part of the fitting part is located in the first cavity 110, and the fitting part 11 is equivalent to sleeve outside the flow guide tube 12. Compared with the way of arranging the connecting pipe along the length of the plate heat exchanger, it is beneficial to reduce the overall volume of the integrated part.
  • the plate heat exchanger 100 can save some space at the position corresponding to the second channel 104. It is beneficial to optimize the installation space of the entire plate heat exchanger 100.
  • the inlet and outlet of fluids such as refrigerant are integrated together. It is also conducive to the integrated installation of the plate heat exchanger 100 and other components, meeting the needs of system compactness, and for matching As far as the piece 11 is concerned, its structure is simple, which is convenient for processing and manufacturing, and facilitates the reduction of the overall volume of the matching piece 11.
  • the outer diameter L1 of the portion of the second pipe portion 1202 located in the first hole 103 is smaller than the inner diameter L2 of the first hole 103, and the second pipe portion 1202 and the first blocking portion 13 are hermetically connected at the connection point, so that the first sub-hole 123 and the first hole
  • the two sub-channels 124 are separated.
  • the first plate 1011 and the second plate 1012 can be the same plate or different plates. When the same plate is used, the first plate 1011 is rotated 180° relative to the second plate 1012, and the third plate 1013 is not punched at the position of the first opening 1 of the first plate 1011 or the second plate 1012.
  • the remaining part of the plate structure can constitute the first blocking portion 13, and the first blocking portion 13 is provided with a small
  • the hole is the second mounting hole 131, and the diameter of the second mounting hole 131 matches the outer diameter of the second pipe 1202.
  • the first blocking portion 13 can also be a separate component
  • the third plate 1013 can also be provided with a first hole 1, and the first blocking portion 13 can pass through at the position of the third plate 1013 corresponding to the first hole 1.
  • the other parts of the third plate 1013 are fixed as a whole by welding or the like.
  • the first blocking portion 13 is substantially perpendicular to the axial direction of the first hole 103.
  • the first inter-sub-board channel 1021 is relatively close to the mating member 11
  • the second inter-sub-board channel 1022 is relatively far away from the mating member 11
  • the fluid flow direction in the first inter-sub-board channel 1021 is the same as that of the second sub-board.
  • the flow direction of the fluid in the middle channel 1022 is opposite.
  • the fluid realizes one return stroke in the first inter-sub-plate channel 1021, and another return stroke in the second inter-sub-plate channel 1022. In this way, in the case of a small plate heat exchanger 100 , Can effectively increase the flow path of the fluid and ensure the better heat transfer performance of the plate heat exchanger.
  • the two-return setting makes it beneficial to the distribution of fluid, especially for the gas-liquid two-phase refrigeration In terms of refrigerant, it helps to improve the uneven distribution of refrigerant in the plate heat exchanger.
  • the outer diameter L1 of the second tube portion 1202 is smaller than the inner diameter L2 of the first sub-hole 123.
  • the flow direction of the fluid in the second cavity 120 is opposite to the flow direction outside the second cavity 120.
  • the mating piece 11 and the draft tube 12 may be independent components, and they are integrated into one body during assembly to form an integrated part.
  • the mating part 11 and the first tube portion 1201 of the draft tube 12 are fixed by welding or other means. Mutual displacement occurs.
  • the mating member 11 also has a first mounting hole 113 communicating with the first cavity 110.
  • the mating member 11 and the outer wall of the first tube portion 1201 of the draft tube 12 The sealing welding makes the first cavity 110 isolated from the outside of the plate heat exchanger 100 at the first mounting hole 113.
  • the integrated part can be integrally formed, such as being processed by a metal casting process, or the integrated part can be integrally formed by an injection molding process, etc., so that the mating part 11 and the draft tube 12 themselves are integrally connected parts, and the two can be fixedly connected.
  • the second flow channel can also pass through the similar fitting 11, the flow guide tube 12 and the first flow channel.
  • the structural positional relationship of the blocking portion 13 and the like realizes two return flow modes in the inter-plate channel corresponding to the second flow channel; or one return flow mode is still adopted, and the present invention does not make specific details about the flow mode of the fluid in the second flow channel. limit.
  • the plate heat exchanger 100 further includes a first side plate 21 and a second side plate 22.
  • the thicknesses of the first side plate 21 and the second side plate 22 are both greater than the thickness of the plate 101, and a plurality of plates 101 are located on the first side plate.
  • the first side plate 21 may include a plate main body and a reinforcing plate that are welded together, and the reinforcing plate is located on a side of the plate main body away from the plate 101.
  • the first side plate 21 adopts a thicker whole side plate, and the thicker thickness of the first side plate 21 can improve the welding strength between the first side plate 21 and the outer wall of the mating part 11.
  • the first side plate 21 and The second side plate 22 and the plurality of plates 101 are fixed as a whole by welding, wherein the welding may be brazing, which is beneficial to improve the strength and reliability of the plate heat exchanger 100.
  • the first side plate 21 has a first plate hole 211, a second plate hole 212, and a third plate hole 213.
  • the first plate hole 211, the second plate hole 212 and the third plate hole 213 all penetrate the first side plate 21.
  • a plate hole 211 is arranged coaxially or eccentrically with the first sub-hole 123 and the second sub-hole 124, and both ends of the second hole 104 are sealed by the first side plate 21 and the second side plate 22, that is, in the second hole
  • the fluid flowing in 104 cannot directly communicate with the outside of the plate heat exchanger 100 through the first side plate 21 or the second side plate 22, and the second plate hole 212 and the third channel are arranged coaxially or eccentrically.
  • the third plate hole 213 is arranged coaxially or eccentrically with the fourth hole
  • the plate heat exchanger 100 further includes a first external pipe 23 and a second external pipe 24.
  • the first external pipe 23 communicates with the second flow channel through the second plate hole 212
  • the second external pipe 24 communicates with the second channel through the third plate hole 213.
  • the two runners are connected.
  • Three plate holes are defined on the first side plate 21, one plate hole is used to connect the integrated component, and the other two plate holes are used to connect the first external tube 23 and the second external tube 24 respectively.
  • the first external pipe 23 and the second external pipe 24 are located on one side in the width direction of the plate heat exchanger 100.
  • first external pipe 23 and the second external pipe 24 are arranged diagonally, as shown in Figure 4, so that the fluid, such as refrigerant, on the basis of the two return strokes of the first flow channel, uses the oblique convection method to optimize the distribution The effect of, can achieve the effect of sufficient heat exchange.
  • Figure 4 shows that the refrigerant flows into the plate heat exchanger from the fourth port 121 and flows out of the plate heat exchanger from the second port 112.
  • the refrigerant can also flow into the plate heat exchanger from the second port 112. Plate heat exchanger, and flow out of the plate heat exchanger from the fourth port 121.
  • the first external pipe 23, the second external pipe 24, and the fitting 11 and the guide pipe 12 integrated as an integral component can be located on the same side of the plate heat exchanger 100, or based on the installation requirements of the plate heat exchanger 100 Located on different sides, for example, the first external pipe 23 and the second external pipe 24 are located on one side of the plate heat exchanger 100, and the mating piece 11 and the flow guide tube 12 integrated as an integral assembly are located on the other side of the plate heat exchanger 100. side.
  • the first blocking portion 13 is provided with a second mounting hole 131 and a flanged portion 125, and the flanged portion 125 is located at the periphery of the second mounting hole 131.
  • the flanging portion 125 is tilted from the first blocking portion 13 along the edge of the second mounting hole 131 toward the direction away from the first sub-hole 123, and the second tube portion 1202 of the guide tube 12 extends through the second mounting hole 131 into the
  • the two sub-channels 124, the flange portion 125 and the outer wall of the second tube portion 1202 are sealed and fixed in the circumferential direction.
  • the guide tube 12 is pressed into the second mounting hole 131, and the tube expansion process can be used to expand the diameter of the guide tube 12, eliminating or reducing the gap between the guide tube 12 and the flange 125.
  • solder strips can be directly filled in the outer wall of the flanging portion 125 and the second tube portion 1202 for sealing welding.
  • the mating member 11 includes a first body 115 and a protrusion 116 connected to the first body 115 and extending along the stacking direction of the plate 101.
  • the protrusion 116 includes a connected The first boss 1161 and the second boss 1162, the first boss 1161 is closer to the first sub-channel 123 than the second boss 1162, and the first port 111 is provided at the end of the first boss 1161 away from the first body 115, In terms of the view direction shown in FIG. 6, the first port 111 is located on the bottom side of the protrusion 116.
  • the protruding portion 116 has a first notch 117, which is perpendicular to the stacking direction of the plates 101.
  • the first notch 117 is adjacent to the first boss 1161. And the first notch 117 is farther away from the guide tube 12 than the first boss 1161, that is, the outer diameter of the first boss 1161 is smaller than the outer diameter of the second boss 1162, so that the outer wall of the boss 116 is arranged in steps.
  • the first side plate 21 is circumferentially welded to the outer side wall of the first boss 1161 to achieve sealing and fixation.
  • the first body 115 is spaced from the first side plate 21 by the second boss 1162.
  • the first side plate 21 may include a plate main body and a reinforcing plate that are welded together, and the reinforcing plate is located on the side of the plate main body away from the plate 101.
  • the second boss 1162 is welded to the top surface of the reinforcing plate, and the outer side wall of the first boss 1161 is welded to the inner side wall of the reinforcing plate at the first plate hole 211.
  • the heat exchange core part of the plate heat exchanger 100 and the mating member 11 can be fixed by the protrusion 116 and the first side plate 21, while the first body 115 and the first side plate 21 are not directly fixed.
  • the contact is beneficial to reduce the pressure of the first body 115 on the heat exchange core part of the plate heat exchanger 100, thereby helping to reduce the influence of the fitting 11 on the flow resistance of the fluid in the plate heat exchanger 100 in the channel between the plates. Improve the heat exchange effect of the plate heat exchanger 100.
  • the fitting piece 11 may be an integrally formed part.
  • the first body 115 includes a first top wall 1151, a first bottom wall (not shown), and a first side wall 1152
  • the first side board includes a board surface 210, the board surface 210 is substantially flat, the board surface 210 is the end surface of the first side board away from the board, the first top wall 1151 and the first bottom wall are the board surfaces of the first side board 21
  • a set of opposite end faces 210 parallel or substantially parallel that is, the first top wall 1151 and the first bottom wall extend along the direction perpendicular to the stacking direction of the plate 101, and the first top wall 1151 is farther from the plate 101 than the first bottom wall.
  • the first top wall 1151 is located on the upper side of the fitting 11, there is a gap between the first bottom wall and the surface 210 of the first side plate 21, and the first side wall 1152 is connected to the first top wall 1151 and the second Between a bottom wall, the first side wall 1152 can be perpendicular or substantially perpendicular to the first side plate 21 as shown in FIG. 7, and the first side wall 1152 can also be arranged obliquely.
  • the first top wall 1151 of the fitting 11 can be roughly Rectangular.
  • the first side wall is also rectangular, or the first top wall 1151 is roughly elliptical or elliptical, and the first side wall is correspondingly curved.
  • the specific shape of the fitting 11 is not discussed in this application. Specific restrictions.
  • the first mounting hole 113 is provided on the first top wall 1151, the first mounting hole 113 is arranged coaxially or eccentrically with the first port 111, and the second port 112 is provided on the first side wall 1152, so that the axial direction of the first port 111 It is perpendicular to the axial direction of the second port 112. Since the flow guiding tube 12 needs to be connected to the mating member 11 in a sealed connection at the first mounting hole 113, correspondingly, the fourth port 121 is close to the first top wall 1151, so that the fourth port 121 and the second port 112 face different directions.
  • the direction setting is convenient for processing and manufacturing.
  • the volume of the fitting 11 can be further reduced, and the fourth port 121 and the second port 112 are arranged in different directions, so that the mutual interference can be reduced when the ports are connected with the pipes, which is beneficial to optimize the plate heat transfer The installation space of the device 100.
  • the first cavity 110 includes a first subcavity 1101 and a Two sub-cavities 1102, the first sub-cavity 1101 communicates with the first sub-channel 123 through the first port 111, and the second sub-cavity 1102 extends obliquely from the second port 112 to the first sub-cavity 1101.
  • the mating part 11 with a rectangular structure is relatively well processed.
  • the first subcavity 1101 and the second subcavity 1102 can be manufactured by machining and other processes, that is, the first subcavity 1101 and the second subcavity 1102 can have relatively straight passages.
  • the center line is convenient for processing and manufacturing, and the second sub-cavity 1102 extends from the second port 112 to the first sub-cavity 1101 relatively obliquely.
  • the fluid flows smoothly in the second sub-cavity 1102 and the flow path is short, which is beneficial to reduce the flow Resistance to improve heat transfer performance.
  • the mating member 11 can also be formed by splicing parts.
  • the first body 115 includes an upper shell 33 and a lower shell 44 manufactured by stamping or machining.
  • the housing 33 and the lower housing 44 are fixed.
  • the upper housing 33 includes a first sub-part 331 extending perpendicular to the plate stacking direction and a second sub-part extending from the edge of the first sub-part 331 in the plate stacking direction 332.
  • the first mounting hole 113 and the second port 112 are both provided in the first sub-portion 331. This facilitates machining of the upper shell.
  • the lower housing 44 includes a raised portion 116 and a third sub-portion 441 integrally connected with the raised portion 116.
  • the third sub-portion 441 is farther away from the plate 101 than the raised portion 116.
  • the third sub-portion 441 is provided with a communicating first A groove 443 and a first channel 442, the first channel 442 is in communication with the first port 111, the first groove 443 extends in the direction perpendicular to the plate stacking direction, the first channel 442 and the first mounting hole 113 are arranged coaxially or eccentrically Set up.
  • the projection of the first groove 443 and the projection of the second port 112 at least partially overlap.
  • the upper housing 33 and the lower housing 44 are fixed by welding on the opposite side surfaces between the second sub-part 332 and the third sub-part 441.
  • the first groove 443 communicates with the second port 112 and the first channel 442.
  • the fluid After the fluid enters the second port 112, it can flow into the first channel 442 through the first groove 443.
  • the upper shell 33 and the lower shell 44 are welded and fixed by the opposite sides between the second sub-part 332 and the third sub-part 441, the upper shell 33 and the lower shell
  • the body 44 is welded as an integral piece.
  • the first tube portion 1201 of the guide tube 12 includes a second body 127 and a third body 127 extending from the second body 127 perpendicular to the stacking direction of the plates.
  • the boss 129 is along the stacking direction of the plates 101, and the fourth port 121 is located at the end of the first tube 1201 away from the heat exchange core.
  • the outer diameter L3 of the third boss 129 is greater than the inner diameter L4 of the first mounting hole 113.
  • the third boss 129 is located on the outside of the mating part 11 away from the first cavity 110.
  • the third boss 129 is fixed to the mating part 11 by welding. At least part of the body 127 is located in the first mounting hole 113.
  • the outer walls of the first body 115 and the second body 127 are circumferentially welded to achieve a sealed fixation.
  • the inner diameter of the second body 127 is matched with the inner diameter of the first mounting hole 113 to facilitate the welding of the matching piece 11 between the first mounting hole 113 and the guide tube 12.
  • the second body 127 of the first pipe portion 1201 and the second pipe portion 1202 are both cylindrical, and the outer diameter of the second body 127 of the first pipe portion 1201 (the inner diameter L4 of the first mounting hole 113) is larger than that of the second pipe The outer diameter L1 of the portion 1202.
  • the reliability of the seal can be improved.
  • the third boss 129 protrudes from the first body 115. When installed with a throttling component such as an electronic expansion valve, the electronic expansion valve can be sleeved on the third boss The outer periphery of 129 can be directly installed with the electronic expansion valve through mechanical connection.
  • the plate heat exchanger 100 is used as an evaporator.
  • the first flow path is used for the circulation of refrigerant
  • the second flow path For the circulation of the refrigerant, the fourth port 121 is used as the refrigerant inlet and the second port 112 is used as the refrigerant outlet.
  • the number of channels 1021 between the first sub-plates is greater than the number of channels 1022 between the second sub-plates,
  • the size and structure of the channel formed by the plate structure of the plate heat exchanger 100 are basically similar, refer to the height H1 of the heat exchange section formed by the first inter-plate channel 1021 along the stacking direction of the plates 101 as shown in FIG. 12 It is greater than the height H2 of the heat exchange section formed by the passage 1022 between the second sub-plates.
  • the gas-liquid two-phase refrigerant enters the second cavity 120 from the fourth port 121, and then flows out of the second cavity 120 from the fifth port 122 and enters the second sub-channel 124, and then passes through
  • the second inter-sub-plate channel 1022 enters the second channel 104, and then enters the first sub-channel 123 via the first inter-sub-plate channel 1021, and then enters the first cavity 110 via the first port 111, and finally enters the gas or liquid
  • the state of phase flows out of the plate heat exchanger 100 from the second port 112.
  • the flow direction of the refrigerant in the heat exchange section formed by the channel 1021 between the first sub-plates is from the second channel 104 to the first sub-channel 123.
  • the flow direction of the heat exchange section formed in the channel 1022 between the second sub-plates is from the first sub-channel 123 to the second channel 104.
  • the design of the two return flow paths makes the flow path of the refrigerant increase.
  • the gas-liquid two-phase refrigerant flowing in the first flow path exchanges heat with the refrigerant flowing in the second flow path. Due to the gas-liquid two-phase cooling When the refrigerant exchanges heat in the first flow channel, the specific gravity of the gaseous refrigerant gradually increases.
  • the number of channels 1021 between the first sub-plates is greater than the number of channels 1022 between the second sub-plates.
  • the channels 1022 between the second sub-plates The formed heat exchange section has fewer channels, which is more conducive to solving the problem of uneven distribution of refrigerant in each channel.
  • the first inter-plate passages 1021 account for a large proportion of the total inter-plate passages, so there will be no large pressure drop loss, which is conducive to the rapid flow of the refrigerant with increased gas specific gravity out of the plate heat exchanger 100.
  • the heat exchange coefficient of the refrigerant is improved, and finally the heat exchange effect of the plate heat exchanger 100 is improved.
  • the plate heat exchanger 100 is used as an evaporator. Accordingly, the first flow path is used for the circulation of refrigerant, and the second flow path is used for the circulation of refrigerant.
  • the second port 112 is used as the refrigerant inlet, and the fourth port 121 is used as the refrigerant outlet.
  • the number of channels of the first inter-sub-plate passage 1021 is smaller than that of the second inter-sub-plate passage 1022.
  • the height H1 of the heat exchange section formed by the first inter-sub-board passage 1021 is smaller than the second inter-sub-board passage 1022 The height of the formed heat exchange section H2.
  • the gas-liquid two-phase refrigerant enters the first cavity 110 from the second port 112, and then flows out of the first cavity 110 from the first port 111 and enters the first sub-channel 123, and then passes through
  • the first inter-sub-plate channel 1021 enters the second channel 104, and then enters the second sub-channel 124 via the second inter-sub-plate channel 1022, and then enters the second cavity 120 via the fifth port 122, and finally enters the gas or liquid phase.
  • the state of the phase flows out of the plate heat exchanger 100 from the fourth port 121.
  • the flow direction of the refrigerant in the heat exchange section formed by the first inter-sub-plate passage 1021 is from the first sub-channel 123 to the second channel 104, and the refrigerant
  • the flow direction of the heat exchange section formed by the channel 1022 between the second sub-plates is from the second channel 104 to the first sub-channel 123.
  • the design of the two return flow paths makes the flow path of the refrigerant increase.
  • the gas-liquid two-phase refrigerant flowing in the first flow path exchanges heat with the refrigerant flowing in the second flow path. Due to the gas-liquid two-phase cooling When the refrigerant exchanges heat in the first flow channel, the specific gravity of the gaseous refrigerant gradually increases.
  • the number of channels 1022 between the second sub-plates is greater than the number of channels 1021 between the first sub-plates.
  • the channels 1021 between the first sub-plates The formed heat exchange section has fewer channels, which is more conducive to solving the problem of uneven distribution of refrigerant in each channel.
  • the second sub-plate passage 1022 accounts for a larger proportion of the total inter-plate passages, so there will be no large pressure drop loss, which is conducive to the rapid flow of the refrigerant with an increased gaseous specific gravity out of the plate heat exchanger 100.
  • the heat exchange coefficient of the refrigerant is improved, and finally the heat exchange effect of the plate heat exchanger 100 is improved.
  • the plate heat exchanger 100 is used as a condenser, the first flow path is used for the circulation of refrigerant, the second flow path is used for the circulation of the refrigerant, and the fourth port 121 is used as The inlet of the refrigerant, the second port 112 is used as the outlet of the refrigerant.
  • the number of channels of the first inter-sub-plate passage 1021 is smaller than the number of the second inter-sub-plate passage 1022, which is formed by the plate structure of the plate heat exchanger 100
  • the height H1 of the heat exchange section formed by the first inter-sub-plate passage 1021 is smaller than the heat exchange section formed by the second inter-sub-plate passage 1022 The height H2.
  • the gaseous refrigerant enters the second cavity 120 from the fourth port 121, and then flows out of the second cavity 120 from the fifth port 122 and enters the second sub-channel 124, and then passes through the second sub-channel 124.
  • the inter-plate channel 1022 enters the second channel 104, and then enters the first sub-channel 124 through the first inter-sub-channel 1021, and then enters the first cavity 110 through the first port 111, and can enter the second port 112 in a liquid state.
  • the flow direction of the refrigerant in the heat exchange section formed by the first inter-sub-plate passage 1021 is from the second channel 104 to the first sub-channel 123, and the refrigerant flows in the second inter-sub-plate channel 1022
  • the flow direction of the formed heat exchange section is from the first sub-channel 123 to the second channel 104.
  • the gaseous refrigerant enters from the fourth port 121, flows in the first flow channel, exchanges heat with the refrigerant flowing in the second flow channel and condenses into a liquid or gas-liquid state.
  • the two return flow paths are designed to make the flow path of the refrigerant
  • the number of channels between the second sub-plates 1022 is greater than that of the first sub-plates in order to ensure that the refrigerant still has a better degree of subcooling at the outlet of the smaller plate heat exchanger 100, that is, the second port 112.
  • the number of channels of 1021 helps the flow distribution of refrigerant and achieves better heat exchange effect.
  • the plate heat exchanger 100 is used as a condenser, the first flow path is used for the circulation of refrigerant, the second flow path is used for the circulation of refrigerant, and the second port 112 is used as The inlet of the refrigerant, the fourth port 121 is used as the outlet of the refrigerant.
  • the number of channels of the first inter-sub-plate passage 1021 is greater than that of the second inter-sub-plate passage 1022, which is formed by the plate structure of the plate heat exchanger 100
  • the height H1 of the heat exchange section formed by the first inter-plate passage 1021 is greater than that of the heat exchange section formed by the second inter-plate passage 1022 Height H2.
  • the single-phase gaseous refrigerant enters the first cavity 110 from the second port 112, then flows out of the first cavity 110 from the first port 111 and enters the first sub-channel 123, and then passes through the An inter-sub-board channel 1021 enters the second channel 104, and then enters the second sub-channel 124 via the second inter-sub-board channel 1022, and then enters the second cavity 120 via the fifth port 122, and finally exits from the single-phase liquid state.
  • the fourth port 121 flows out of the plate heat exchanger 100.
  • the flow direction of the refrigerant in the heat exchange section formed by the channel 1021 between the first sub-plates is from the first sub-channel 123 to the second channel 104, and the refrigerant flows in the second sub-channel 104.
  • the flow direction of the heat exchange section formed by the inter-plate passage 1022 is from the second channel 104 to the first sub-channel 123.
  • the gaseous refrigerant enters from the second port 112, flows in the first flow channel, exchanges heat with the refrigerant flowing in the second flow channel and condenses into a liquid or gas-liquid state.
  • the two return flow paths are designed to make the flow path of the refrigerant
  • the number of channels 1021 between the first sub-plates is greater than that of the second sub-plates
  • the number of channels of 1022 helps the flow distribution of refrigerant and achieves a better heat exchange effect.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne un échangeur de chaleur à plaques, comprenant un faisceau d'échange de chaleur et un élément intégré. L'élément intégré comprend un élément d'adaptation et un tuyau de guidage d'écoulement, l'élément d'adaptation comprenant une première cavité, un premier orifice et un deuxième orifice, et le tuyau de guidage d'écoulement comprenant une seconde cavité, un quatrième orifice et un cinquième orifice. L'élément d'adaptation est relié de manière fixe au tuyau de guidage d'écoulement. Le tuyau de guidage d'écoulement traverse la première cavité et s'étend vers un premier passage de sous-pore, et la première cavité est espacée de la seconde cavité au moyen d'une seconde partie d'adaptation. Une première partie de blocage et la seconde partie d'adaptation sont scellées de façon à isoler le premier passage de sous-pore d'un second passage de sous-pore. Un premier canal d'écoulement comprend un premier sous-canal inter-plaques et un second sous-canal inter-plaques. Le premier sous-canal inter-plaques est séparé du second sous-canal inter-plaques au moyen d'une troisième plaque. Le premier sous-canal inter-plaques est en communication avec le premier passage de sous-pore et le second passage de sous-pore, le second sous-canal inter-plaques est en communication avec le second passage de sous-pore et un second passage de pore, et les sens d'écoulement des fluides dans le premier sous-canal inter-plaques et le second sous-canal inter-plaques sont opposés l'un à l'autre. La présente invention peut permettre de réduire l'espace occupé par un pipeline correspondant à un échangeur de chaleur à plaques.
PCT/CN2020/091712 2019-05-24 2020-05-22 Échangeur de chaleur à plaques WO2020238781A1 (fr)

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CN115507681B (zh) * 2022-09-23 2023-10-24 浙江英特科技股份有限公司 一种板式换热器

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CN205748088U (zh) * 2016-05-20 2016-11-30 杭州三花研究院有限公司 换热装置
CN205940233U (zh) * 2016-06-08 2017-02-08 杭州三花研究院有限公司 一种换热装置
CN106918165A (zh) * 2015-12-25 2017-07-04 浙江三花汽车零部件有限公司 一种换热装置
CN106918255A (zh) * 2015-12-25 2017-07-04 浙江三花汽车零部件有限公司 一种换热装置及换热器
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WO2013030395A1 (fr) * 2011-09-01 2013-03-07 Valeo Systemes Thermiques Echangeur de chaleur a dispositif de fixation adaptable
CN105579725A (zh) * 2013-09-30 2016-05-11 达纳加拿大公司 具有一体化的同轴入口/出口管的热交换器
CN106918165A (zh) * 2015-12-25 2017-07-04 浙江三花汽车零部件有限公司 一种换热装置
CN106918255A (zh) * 2015-12-25 2017-07-04 浙江三花汽车零部件有限公司 一种换热装置及换热器
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CN205748088U (zh) * 2016-05-20 2016-11-30 杭州三花研究院有限公司 换热装置
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WO2024028676A1 (fr) * 2022-08-05 2024-02-08 Ufi Innovation Center S.R.L. Condensateur refroidi par liquide

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