CN110849180A - Heat exchanger with non-circular cross section of heat exchange tube and heat exchange method thereof - Google Patents
Heat exchanger with non-circular cross section of heat exchange tube and heat exchange method thereof Download PDFInfo
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- CN110849180A CN110849180A CN201810953940.0A CN201810953940A CN110849180A CN 110849180 A CN110849180 A CN 110849180A CN 201810953940 A CN201810953940 A CN 201810953940A CN 110849180 A CN110849180 A CN 110849180A
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- heat exchange
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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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
- F28D7/1684—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits having a non-circular cross-section
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
- F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The embodiment of the invention relates to a heat exchanger with a non-circular cross section of a heat exchange tube, which relates to the technical field of heat exchange and mainly solves the technical problem that the heat exchange efficiency of the existing heat exchanger is insufficient. The heat exchanger with the non-circular cross section of the heat exchange tube comprises: the shell is internally provided with a heat exchange space; a second heat exchange passage leading from the second heat exchange medium inlet to the second heat exchange medium outlet is formed in the heat exchange space; the second heat exchange passage is divided into at least two subsection passages by at least one flow direction distribution plate, and the flow direction distribution plate is provided with an air flow distribution hole communicated with the at least two subsection passages. The flow direction of at least two subsection passages of the second heat exchange passage is limited by the positions of the distribution holes, so that the phenomena of bias flow and vortex flow generated by the second heat exchange medium in the second heat exchange passage can be reduced, the second heat exchange medium in the second heat exchange passage uniformly flows through the heat exchange tube, the heat exchange of the first heat exchange passage and the second heat exchange passage is improved, and the heat exchange efficiency of the heat exchanger is higher.
Description
Technical Field
The embodiment of the invention relates to the technical field of heat exchange, in particular to a heat exchanger with a non-circular cross section of a heat exchange tube and a heat exchange method thereof.
Background
In the field of heat exchangers, the traditional round tube type heat exchanger has the advantages of firm structure, large operation elasticity and wide application, and plays an important role in the field of heat exchangers at present. However, the traditional round tube heat exchanger has significant defects in the aspects of heat exchange efficiency, equipment structure compactness, metal consumption and the like.
Therefore, the development of a novel heat exchanger with high heat transfer efficiency and excellent equipment compactness is of great significance.
Disclosure of Invention
In view of this, the embodiment of the present invention provides a heat exchanger with a non-circular cross section of a heat exchange tube, and mainly solves the technical problem that the existing heat exchanger has insufficient heat exchange efficiency.
In order to achieve the above purpose, the embodiments of the present invention mainly provide the following technical solutions:
an embodiment of the present invention provides a heat exchanger having a non-circular cross-section of a heat exchange tube, including:
a housing having a heat exchange space therein;
the cross section of the heat exchange tube is non-circular, the heat exchange tube is arranged in the heat exchange space and comprises a first port and a second port which are communicated with each other;
the first heat exchange medium inlet is arranged in the shell and communicated with a first port of the heat exchange tube;
the first heat exchange medium outlet is arranged in the shell and communicated with the second port of the heat exchange tube, and a first heat exchange channel leading from the first heat exchange medium inlet to the first heat exchange medium outlet is formed in the heat exchange tube;
the second heat exchange medium inlet is arranged in the shell and communicated with the heat exchange space;
the second heat exchange medium outlet is arranged in the shell and communicated with the heat exchange space, and a second heat exchange passage leading from the second heat exchange medium inlet to the second heat exchange medium outlet is formed in the heat exchange space;
and the flow direction distribution plate is arranged in the heat exchange space, divides the second heat exchange passage into at least two subsection passages, and is provided with an air flow distribution hole communicated with the at least two subsection passages.
The purpose of the embodiments of the present invention and the technical problems solved thereby can be further realized by the following technical measures.
Optionally, the cross section of the heat exchange tube is non-circular, and the flow direction distribution plate is respectively supported by the inner wall of the shell and the outer wall of the heat exchange tube.
Optionally, the cross section of the heat exchange tube is non-circular, the heat exchange tube passes through the airflow distribution hole, and a ventilation gap is formed between the airflow distribution hole and the heat exchange tube.
Optionally, the cross section of the heat exchange tube is non-circular, wherein the inner wall of the air distribution hole has at least two supporting parts supporting the outer wall of the heat exchange tube.
Optionally, the cross section of the heat exchange tube is a non-circular heat exchanger, wherein a ratio of the length to the width of the cross section of the heat exchange tube is greater than or equal to 5.
Optionally, the cross section of the heat exchange tube is non-circular, wherein the first heat exchange medium inlet is disposed at the first end of the shell, and the inlet end of the heat exchange tube extends towards the first end of the shell;
the second heat exchange medium outlet is arranged at the second end of the shell, and the outlet end of the heat exchange tube extends towards the second end of the shell;
the shell comprises a first shell wall and a second shell wall which are positioned at two sides of the cross section of the heat exchange tube in the length direction, and the second heat exchange medium inlet and the second heat exchange medium outlet are arranged on the first shell wall of the shell and/or the second shell wall of the shell.
Optionally, the cross section of the heat exchange tube is non-circular, wherein the second heat exchange medium inlet is located at a first position of the housing, the second heat exchange medium outlet is located at a second position of the housing, and the first position is farther from the first end of the housing than the second position.
Optionally, the cross section of the heat exchange tube is non-circular, the heat exchange tube is arranged side by side, each flow direction distribution plate is provided with a plurality of air flow distribution holes, and the plurality of heat exchange tubes penetrate through the plurality of air flow distribution holes of each flow direction distribution plate one by one;
at least one inlet guide plate arranged in the heat exchange space and opposite to the second heat exchange medium inlet; and/or at least one outlet guide plate is arranged in the heat exchange space and is opposite to the second heat exchange medium outlet.
Optionally, the cross section of the heat exchange tube is a non-circular heat exchanger, wherein the inlet guide plates are multiple, and each inlet guide plate includes: the first plates of the inlet guide plates are distributed in the extension direction of the heat exchange tube, and fluid at the second heat exchange medium inlet is divided to the peripheries of different heat exchange tubes.
Optionally, the cross section of the heat exchange tube is a non-circular heat exchanger, wherein each inlet guide plate comprises: and the second plates of the plurality of inlet guide plates are distributed in the length direction of the cross section of the heat exchange tube.
Optionally, the cross section of the heat exchange tube is a non-circular heat exchanger, wherein the outlet guide plates are multiple, and each outlet guide plate includes: and the third plates of the plurality of inlet guide plates are distributed in the length direction of the cross section of the heat exchange tube, and guide the fluid on the periphery of different heat exchange tubes to the second heat exchange medium outlet.
Optionally, the cross section of the heat exchange tube is a non-circular heat exchanger, wherein each outlet guide plate includes: and the fourth plates of the outlet guide plates are distributed in the extension direction of the heat exchange tube.
Optionally, the heat exchanger with a non-circular cross section of the heat exchange tube further includes:
a first tubesheet and a second tubesheet;
the heat exchange tubes are arranged side by side, and a plurality of tube connecting ports are respectively arranged on the first tube plate and the second tube plate; the first tube sheet is arranged in the shell; the second tube plate is arranged in the shell, and the heat exchange space is formed between the first tube plate and the second tube plate in the shell; the first ports of the heat exchange tubes are in one-to-one corresponding sealing connection with the tube connection ports of the first tube plate; and the second ports of the plurality of heat exchange tubes are in one-to-one corresponding sealing connection with the plurality of tube connecting ports of the second tube plate.
By the technical scheme, the heat exchanger with the non-circular cross section of the heat exchange tube provided by the technical scheme of the invention at least has the following advantages:
in the technical scheme provided by the embodiment of the invention, in the heat exchange process, a first heat exchange medium is introduced into a first heat exchange medium inlet, the first heat exchange medium enters a first heat exchange passage, a second heat exchange medium is introduced into a second heat exchange medium inlet, and the second heat exchange medium enters a second heat exchange passage, wherein the flow direction of at least two segmented passages of the second heat exchange passage is limited by the positions of distribution holes, so that the phenomena of bias flow and vortex flow generated by the second heat exchange medium in the second heat exchange passage can be reduced, the heat exchange of the first heat exchange passage and the second heat exchange passage is improved, and the heat exchange efficiency of the heat exchanger is higher.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the embodiments of the present invention more clear and clear, and to implement the technical solutions according to the contents of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic view of an internal structure of a heat exchanger having a heat exchange tube with a non-circular cross section according to an embodiment of the present invention;
FIG. 2 is a first schematic cross-sectional view of FIGS. 1A-A;
FIG. 3 is a structural diagram of a flow direction distribution plate of a heat exchanger with a non-circular cross section of a first heat exchange tube according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a first heat exchange tube of a heat exchanger having a non-circular cross-section according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a second heat exchange tube of a heat exchanger having a non-circular cross-section according to an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of a third heat exchange tube of a heat exchanger having a non-circular cross-section according to an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of a fourth heat exchange tube of a heat exchanger having a non-circular cross-section according to an embodiment of the present invention;
FIG. 8 is a schematic view of a first inlet baffle configuration of a heat exchanger having a non-circular cross-section heat exchange tube according to an embodiment of the present invention;
FIG. 9 is a schematic view of a second inlet baffle configuration of a heat exchanger having a non-circular cross-section heat exchange tube according to an embodiment of the present invention;
FIG. 10 is a schematic view of a first outlet baffle configuration of a heat exchanger having a non-circular cross-section heat exchange tube according to an embodiment of the present invention;
FIG. 11 is a schematic view of a second outlet baffle configuration of a heat exchanger having a non-circular cross-section heat exchange tube according to an embodiment of the present invention;
FIG. 12 is a second schematic cross-sectional view of FIGS. 1A-A;
FIG. 13 is a structural schematic view of a flow direction distribution plate of a heat exchanger having a non-circular cross section of a second heat exchange tube according to an embodiment of the present invention;
FIG. 14 is a third schematic cross-sectional view of FIGS. 1A-A;
FIG. 15 is a schematic view of a flow direction distribution plate of a heat exchanger having a non-circular cross section of a third heat exchange tube according to an embodiment of the present invention;
FIG. 16 is a fourth schematic cross-sectional view of FIGS. 1A-A;
fig. 17 is a structural diagram of a flow direction distribution plate of a heat exchanger in which a fourth heat exchange tube has a non-circular cross section according to an embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the purpose of the predetermined embodiments of the present invention, the following detailed description will be made on the specific implementation, structure, features and effects of the heat exchanger with the heat exchange tube having a non-circular cross section according to the embodiments of the present invention with reference to the accompanying drawings and the preferred embodiments. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Fig. 1 to 3 show an embodiment of a heat exchanger in which the cross section of the heat exchange tube is non-circular, in which a first heat exchange medium flows as indicated by a double-dashed arrow in fig. 1, and a second heat exchange medium flows as indicated by a solid arrow in fig. 1. Referring to fig. 1 to 3, a heat exchanger with a non-circular cross-section of a heat exchange tube according to an embodiment of the present invention includes: a shell 10, a first heat exchange medium inlet 20, a first heat exchange medium outlet 30, heat exchange tubes 40, a second heat exchange medium inlet 50, a second heat exchange medium outlet 60 and at least 1 flow direction distribution plate 70.
The shell 10 has a heat exchange space inside; the cross section of the heat exchange tube 40 is non-circular, the heat exchange tube 40 is arranged in the heat exchange space, and the heat exchange tube 40 comprises a first port and a second port which are mutually communicated; a first heat exchange medium inlet 20 is arranged in the shell 10, and the first heat exchange medium inlet 20 is communicated with a first port of the heat exchange tube 40; a first heat exchange medium outlet 30 is arranged in the shell 10, the first heat exchange medium outlet 30 is communicated with the second port of the heat exchange tube 40, and a first heat exchange passage leading from the first heat exchange medium inlet 20 to the first heat exchange medium outlet 30 is formed in the heat exchange tube 40; a second heat exchange medium inlet 50 is arranged in the shell 10, and the second heat exchange medium inlet 50 is communicated with the heat exchange space; a second heat exchange medium outlet 60 is arranged in the shell 10, the second heat exchange medium outlet 60 is communicated with the heat exchange space, and a second heat exchange passage leading from the second heat exchange medium inlet 50 to the second heat exchange medium outlet 60 is formed in the heat exchange space; at least one flow distribution plate 70 is disposed in the heat exchange space, at least 1 flow distribution plate 70 divides the second heat exchange passage into at least two segmented passages, and the flow distribution plate 70 is provided with an air distribution hole 701 communicating with the at least two segmented passages B.
In the heat exchange process, a first heat exchange medium is introduced into a first heat exchange medium inlet, the first heat exchange medium enters a first heat exchange passage, a second heat exchange medium is introduced into a second heat exchange medium inlet, the second heat exchange medium enters a second heat exchange passage, wherein the flow direction of at least two subsection passages of the second heat exchange passage is limited by the position of the distribution hole, so that the phenomena of bias flow and vortex flow generated by the second heat exchange medium in the second heat exchange passage can be reduced, the second heat exchange medium in the second heat exchange passage uniformly flows through the heat exchange tube, the heat exchange of the first heat exchange passage and the second heat exchange passage is improved, and the heat exchange efficiency of the heat exchanger is higher.
The cross section of the heat exchange tube is non-circular, and the ratio of the length to the width of the cross section of the heat exchange tube is more than or equal to 5.
Wherein the shell 10 comprises a first end and a second end, the first heat exchange medium inlet 20 is arranged at the first end of the shell 10, and the inlet ends of the heat exchange tubes 40 extend towards the first end of the shell 10; the first heat exchange medium outlet 30 is arranged at the second end of the shell 10, and the outlet ends of the heat exchange tubes 40 extend towards the second end of the shell 10; the shell 10 includes a first shell wall and a second shell wall located on both sides of the heat exchange tube in the length direction, and the second heat exchange medium inlet and the second heat exchange medium outlet are disposed on the first shell wall of the shell and/or the second shell wall of the shell. That is, in some embodiments, the second heat exchange medium inlet and the second heat exchange medium outlet may be disposed on the first shell wall at the same time, or the second heat exchange medium inlet and the second heat exchange medium outlet may be disposed on the second shell wall at the same time.
In other embodiments, the second heat exchange medium inlet 50 is provided in the first shell wall and the second heat exchange medium outlet 60 is provided in the second shell wall. The second heat exchange medium inlet is located at a first position of the shell, the second heat exchange medium outlet is located at a second position of the shell, and the first position is far away from the first end of the shell compared with the second position. The second heat exchange medium firstly flows into the shell in the length direction of the cross section of the heat exchange tube in the shell and then flows in the extension direction of the heat exchange tube, the direction of the second heat exchange medium flowing in the extension direction of the heat exchange tube of the shell is opposite to the direction of the first heat exchange medium flowing in the heat exchange tube, high-efficiency countercurrent heat exchange is realized, and finally the second heat exchange medium flows out of the shell in the length direction of the cross section of the heat exchange tube of the shell.
The cross section of the heat exchange tube is noncircular, as shown in fig. 4, the cross section of the heat exchange tube is long, the ratio L/W of the length L to the width W is more than or equal to 5, and the heat transfer performance of the heat exchange tube with the noncircular cross section is known to be increased along with the increase of the ratio L/W of the length to width of the cross section according to the theory of heat transfer, wherein the larger the length to width ratio is, the higher the. The second heat exchange medium inlet direction and the second heat exchange medium outlet direction may be arranged along the length direction of the cross section of the heat exchange tube.
The section of the strip may be a plane-symmetric figure, specifically, an oval, a straight strip, an oblong, a rectangle, a dumbbell, a curved strip, a polygon, etc., for example, the upper and lower sides of the section are wavy and are formed in a mirror image relationship. Or the heat exchange tube extends along the central axis, and the section of the heat exchange tube, which is perpendicular to the length direction of the cross section, is in a wavy shape. In the first embodiment, as shown in fig. 4, two outer end surfaces in the length L direction of the elongated cross section are arc surfaces, and two outer end surfaces in the middle section in the length L direction of the elongated cross section are flat surfaces. Or, two outer end surfaces in the length L direction of the long-strip-shaped section are planes, two outer end surfaces in the middle section in the length L direction of the long-strip-shaped section are planes, and 4 corners of the long-strip-shaped section are arc-shaped chamfer surfaces. As shown in fig. 5, in the second embodiment, both outer end surfaces in the length L direction of the elongated cross section are arc surfaces, and both opposite outer end surfaces in the middle section in the length L direction of the elongated cross section are curved surfaces that are curved in the same direction. In the third embodiment, the two outer end surfaces in the length L direction of the long-strip-shaped cross section are arc surfaces, and the two opposite outer end surfaces in the middle section in the length L direction of the long-strip-shaped cross section are curved surfaces which are bent oppositely. The curved surface curved in the opposite direction may be curved in a convex-concave manner in the longitudinal direction L of the cross section as shown in fig. 6, or may be curved in a concave-convex manner in the longitudinal direction L of the cross section as shown in fig. 7.
The number of the heat exchange pipes is not limited to 1, for example, as shown in fig. 2 and 3, the heat exchange pipes 40 are arranged in plurality side by side, each flow direction distribution plate 70 is provided with a plurality of air flow distribution holes 701, and the plurality of heat exchange pipes 40 penetrate through the plurality of air flow distribution holes 701 of each flow direction distribution plate 70 one by one. For ease of installation, in a specific implementation, as shown in fig. 1, the heat exchanger further comprises: a first tube plate 101 and a second tube plate 102, wherein the first tube plate 101 and the second tube plate 102 are respectively provided with a plurality of tube connecting ports (not shown in the figure); the first tube sheet 101 is disposed in the shell 10; the second tube plate 102 is disposed in the shell 10, and the heat exchange space is formed between the first tube plate 101 and the second tube plate 102 in the shell 10; the first ports of the plurality of heat exchange tubes are hermetically connected with the plurality of tube connection ports of the first tube plate 101 in a one-to-one correspondence manner; the second ports of the heat exchange tubes are hermetically connected with the tube connection ports of the second tube plate 102 in a one-to-one correspondence manner. The size of the pipe connecting port can be matched with the size of the cross section of the heat exchange pipe, so that the first port of the heat exchange pipe is in sealing connection with the pipe connecting port of the first pipe plate, and the second port of the heat exchange pipe is in sealing connection with the pipe connecting port of the second pipe plate.
Wherein, the second heat transfer medium turns to the flow process on the heat exchange tube extending direction in the casing after the length direction in heat exchange tube cross-section flows into the casing, appears phenomenon such as bias current easily, is difficult to realize turning to the even heat transfer of flow direction in-process and a plurality of heat exchange tubes, and is further, still includes: at least one inlet baffle 80 is disposed in the heat exchange space opposite the second heat exchange medium inlet 50. In practice, as shown in fig. 8, the inlet baffle comprises: the inlet guide plate is in a shape of a straight plate, the first plate 801 can be parallel to the inlet flow direction of the second heat exchange medium inlet, the first end of the first plate 801 extends to the second heat exchange medium inlet, the second end of the first plate 801 extends to the heat exchange tube, a through hole for penetrating through the heat exchange tube is formed in the first plate 801, and the first plate 801 can guide the second heat exchange medium to flow to the heat exchange tube for heat exchange. When the inlet baffle is plural, each inlet baffle includes: the first plates of the inlet guide plates are distributed in the extension direction of the heat exchange tube, fluid at the second heat exchange medium inlet is divided to the peripheries of different heat exchange tubes, the first ends of the first plates of the inlet guide plates extend to the second heat exchange medium inlet, and the second ends of the first plates of the inlet guide plates extend to different heat exchange tubes. Further, as shown in fig. 1 and 9, each inlet baffle 80 includes: the second plate 802 extends in the extension direction of the heat exchange tube of the shell, the second plates 802 of the inlet guide plates are distributed in the length direction of the cross section of the heat exchange tube of the shell, the second plates 802 and the first plate 801 form an integral component, the inlet guide plates are in an inverted L-shaped plate shape, the second plates 802 can be perpendicular to the first plate 801, so that the second heat exchange medium is uniformly guided to the space area where the heat exchange tube is located from the second heat exchange medium inlet, the second heat exchange medium inlet vortex area is effectively eliminated, the bias flow degree of the second heat exchange medium is reduced, the flow field is rectified, the degree of the two heat exchange media in the heat exchange tube area of the second heat exchange medium inlet is increased, and the heat exchange efficiency is improved. The plurality of inlet baffles 80 are arranged in a stepped manner to achieve the guiding of the air flow turning direction. A plurality of inlet baffles may be disposed in the second heat exchange path in a direction of flow of the second heat exchange medium forward of the distributor plate. The widths of the first plate and the second plate are not limited, and it is easy to understand that the width of the first plate and the second plate is narrow to a certain extent to form the rod.
Wherein, the second heat transfer medium turns to the flow process on the length direction of casing heat exchange tube cross-section after casing heat exchange tube extending direction flows, appears phenomenon such as bias flow easily, is difficult to realize turning to the even heat transfer of flow direction in-process with a plurality of heat exchange tubes, and is further, as shown in fig. 1, still include: at least one outlet baffle 90 disposed in the heat exchange space opposite the second heat exchange medium outlet 60. In practice, as shown in fig. 10, the outlet baffle comprises: the outlet guide plate is a straight plate shape, the third plate 901 can be parallel to the extending direction of the heat exchange tube, the third plate 901 can be at the position facing the outlet of the second heat exchange medium in the length direction of the cross section of the heat exchange tube of the shell, and the plate surface of the third plate 901 is opposite to the outlet of the second heat exchange medium. When the outlet baffle is a plurality of, each outlet baffle includes: the third plates of the plurality of inlet guide plates extend to different positions facing the second heat exchange medium outlet in the extension direction of the heat exchange tubes of the shell. Further, as shown in fig. 1 and 11, each outlet baffle includes: the fourth plate 902 extends in the length direction of the cross section of the heat exchange tube of the shell, a through hole for penetrating the heat exchange tube is formed in the fourth plate 902, the fourth plates 902 of the outlet guide plates are distributed in the extension direction of the heat exchange tube of the shell, the fourth plate 902 and the third plate 901 can form an integrated component, the outlet guide plates are in an L-shaped plate shape, and the fourth plate 902 and the third plate 901 can be perpendicular, so that the second heat exchange medium is uniformly guided to the outlet of the second heat exchange medium from the heat exchange tube area, the vortex area of the outlet of the second heat exchange medium is effectively eliminated, the bias flow degree of the second heat exchange medium is reduced, the flow field is rectified, the degree of the reverse flow of the two heat exchange media in the heat exchange tube area of the outlet of the second heat exchange medium is improved. The plurality of outlet baffles 90 are arranged in a step shape to guide the air flow in a turning direction. The plurality of outlet guide plates can be arranged at the last flow direction of the second heat exchange medium in the second heat exchange passage to the rear of the distribution plate. The widths of the third plate and the fourth plate are not limited, and it is easy to understand that the bars can be formed by the widths of the third plate and the fourth plate being narrow to a certain extent.
The flow direction distribution plate may be supported on the inner wall of the shell, or the flow direction distribution plate may be supported on the outer wall of the heat exchange tube. In the implementation, the length of the heat exchange tube is longer, and when the flow velocity of the second heat exchange medium is faster, the longer heat exchange tube is easy to vibrate. Therefore, the flow distribution plate can be respectively supported with the inner wall of the shell and the outer wall of the heat exchange tube, so that the flow distribution plate can reinforce the heat exchange tube, and the running stability of the heat exchanger is improved.
The number of the gas distribution holes flowing to the distribution plate is not limited to 1, and the gas distribution holes are specifically designed according to the specific condition of gas in the heat exchange space. For example, in some embodiments, the heat exchange tube passes through the air flow distribution holes with an air vent gap therebetween. The second heat exchange medium passes through two segmentation passageways through the ventilation clearance, and the second heat exchange medium passes through the ventilation clearance in-process, evenly distributed to can produce the efficient heat transfer with first medium in the heat exchange tube, improve the heat exchange efficiency of heat exchanger.
The mode of realizing flowing to the break plate and the support of heat exchange tube outer wall can adopt the air current distribution hole to realize, have at the inner wall of air current distribution hole with two at least supporting parts that the heat exchange tube outer wall supported, two at least supporting parts centre gripping heat exchange tube outer wall. In some embodiments, the at least two support portions include a first support end and a second support end that support both ends of the heat exchange tube in a cross-sectional length direction.
For example, as shown in fig. 12 and 13, the first support end and the second support end are both clamping grooves 701a recessed outside the inner walls of the airflow distribution holes, specifically, the airflow distribution holes 701 are respectively and independently arranged, the widths of the airflow distribution holes 701 are greater than the width of the heat exchange tube 40, and the ventilation gaps are formed in gaps between the walls of the airflow distribution holes 701 and the heat exchange tube 40.
Alternatively, as shown in fig. 14 and 15, at least some of the plurality of air distribution holes may be connected to form a combined air distribution hole 702, and the air gap may be formed in the space between the outer walls of two adjacent heat exchange tubes 40 in the combined air distribution hole 702.
Of course, the first supporting end and the second supporting end may also be the first protrusion protruding from the inner wall of the airflow distribution hole.
Further, the at least two support portions may further include a third support end and a fourth support end supporting both ends of the heat exchange tube in the cross-sectional width direction.
For example, as shown in fig. 3, the third supporting end and the fourth supporting end may be second protrusions 701b protruding from the inner wall of the airflow distribution hole. Specifically, the first support end and the second support end may also be a first protrusion 701c protruding from the inner wall of the airflow distribution hole. Alternatively, as shown in fig. 16 and 17, the third supporting end and the fourth supporting end may be second protrusions 701b protruding from the inner wall of the airflow distribution hole, and the first supporting end and the second supporting end are locking grooves 701a recessed outside the inner wall of the airflow distribution hole 701.
As shown in fig. 1, the flow direction distribution plate 70 can be at least 2, and at least 2 flow direction distribution plates 70 can be distributed over the length or width of the shell heat exchange tube cross-section. The greater the number of flow direction distribution plates 70, the more stable the flow direction distribution can be adjusted.
The embodiment provided by the invention at least has the following advantages:
1. the heat transfer efficiency is high.
a. The heat exchange tube has a cross section with the ratio of length to width not less than 5 and a flat cross section, and the heat transfer performance of the heat exchange tube is increased along with the increase of the ratio of length to width L/W of the cross section according to the theory of heat transfer science, wherein the larger the length to width ratio, the higher the heat transfer efficiency;
b. a ventilation gap along the axial direction of the heat exchange tube is formed between the flow direction distribution plate and the outer wall of the heat exchange tube, and the flow direction from the first heat exchange medium inlet to the first heat exchange medium outlet and the flow direction from the second heat exchange medium inlet to the second heat exchange medium outlet are arranged in a reverse direction, so that a countercurrent heat exchange flow of the first heat exchange medium and the first heat exchange medium is formed, the effective heat transfer temperature difference is improved, and the heat exchange effect is enhanced;
c. the inlet guide plate arranged in the second heat exchange medium inlet area and the outlet guide plate arranged in the second heat exchange medium outlet area effectively eliminate the vortex area in the two areas and reduce the bias flow degree of the medium, and rectify the flow field, so that the counterflow degree of the two heat exchange media is improved, and the heat exchange area and the heat transfer effect of the areas are enhanced.
2. The structure is compact.
The larger the ratio L/W of the length of the cross section of the heat exchange tube to the width of the heat exchange tube is, the larger the size of the shell is, the arrangement density of the heat exchange tube is large, the heat transfer area is large, and the heat transfer efficiency is high, so that the structure is more compact when the heat transfer quantity is the same.
3. The medium steering elbow box required by the cross-flow heat exchange multi-tube pass is eliminated, and the processing and the manufacturing are simple and convenient.
The heat exchange method of the heat exchanger with the non-circular cross section of the heat exchange tube in the embodiment of the invention comprises the following steps:
and introducing a first heat exchange medium to the first heat exchange medium inlet, and introducing a second heat exchange medium to the second heat exchange medium inlet, so that the first heat exchange medium of the first heat exchange passage in the heat exchange pipe and the second heat exchange medium of the second heat exchange passage outside the heat exchange pipe perform countercurrent heat exchange.
The first heat exchange medium after heat exchange flows out through the first heat exchange medium outlet in a reverse heat exchange mode, and the second heat exchange medium after heat exchange flows out through the second heat exchange medium outlet in a reverse heat exchange mode.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
It will be appreciated that the relevant features of the devices described above may be referred to one another. In addition, "first", "second", and the like in the above embodiments are for distinguishing the embodiments, and do not represent merits of the embodiments.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed apparatus should not be construed to reflect the intent as follows: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the components of the apparatus of the embodiments may be adapted and arranged in one or more arrangements different from the embodiments. The components of the embodiments may be combined into one component and, in addition, they may be divided into a plurality of sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the components of any apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination. The various component embodiments of the present invention may be implemented in hardware, or in a combination thereof.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or components not listed in a claim. The word "a" or "an" preceding a component or element does not exclude the presence of a plurality of such components or elements. The invention may be implemented by means of an apparatus comprising several distinct elements. In the claims enumerating several means, several of these means may be embodied by one and the same item. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.
Claims (14)
1. A heat exchanger with a non-circular cross section of a heat exchange tube is characterized by comprising:
a housing having a heat exchange space therein;
the cross section of the heat exchange tube is non-circular, the heat exchange tube is arranged in the heat exchange space and comprises a first port and a second port which are communicated with each other;
the first heat exchange medium inlet is arranged in the shell and communicated with a first port of the heat exchange tube;
the first heat exchange medium outlet is arranged in the shell and communicated with the second port of the heat exchange tube, and a first heat exchange channel leading from the first heat exchange medium inlet to the first heat exchange medium outlet is formed in the heat exchange tube;
the second heat exchange medium inlet is arranged in the shell and communicated with the heat exchange space;
the second heat exchange medium outlet is arranged in the shell and communicated with the heat exchange space, and a second heat exchange passage leading from the second heat exchange medium inlet to the second heat exchange medium outlet is formed in the heat exchange space;
and the flow direction distribution plate is arranged in the heat exchange space, divides the second heat exchange passage into at least two subsection passages, and is provided with an air flow distribution hole communicated with the at least two subsection passages.
2. The heat exchanger having a non-circular cross-section of the heat exchange tube of claim 1,
the flow direction distribution plate is respectively supported with the inner wall of the shell and the outer wall of the heat exchange tube.
3. A heat exchanger having a heat exchange tube of non-circular cross-section according to claim 2,
the heat exchange pipe penetrates through the airflow distribution holes, and ventilation gaps are formed between the airflow distribution holes and the heat exchange pipe.
4. A heat exchanger having a heat exchange tube of non-circular cross-section according to claim 3,
the inner wall of the air flow distribution hole is provided with at least two supporting parts which are supported with the outer wall of the heat exchange tube.
5. A heat exchanger having a non-circular cross-section of the heat exchange tube of claim 1, further comprising:
a first tubesheet and a second tubesheet;
the heat exchange tubes are arranged side by side, and a plurality of tube connecting ports are respectively arranged on the first tube plate and the second tube plate; the first tube sheet is arranged in the shell; the second tube plate is arranged in the shell, and the heat exchange space is formed between the first tube plate and the second tube plate in the shell; the first ports of the heat exchange tubes are in one-to-one corresponding sealing connection with the tube connection ports of the first tube plate; and the second ports of the plurality of heat exchange tubes are in one-to-one corresponding sealing connection with the plurality of tube connecting ports of the second tube plate.
6. A heat exchanger having a heat exchange tube of non-circular cross-section according to any one of claims 1 to 5,
the ratio of the length to the width of the cross section of the heat exchange tube is more than or equal to 5.
7. A heat exchanger having a heat exchange tube of non-circular cross-section according to claim 6,
the first heat exchange medium inlet is arranged at the first end of the shell, and the inlet end of the heat exchange tube extends towards the first end of the shell;
the second heat exchange medium outlet is arranged at the second end of the shell, and the outlet end of the heat exchange tube extends towards the second end of the shell;
the shell comprises a first shell wall and a second shell wall which are positioned at two sides of the cross section of the heat exchange tube in the length direction, and the second heat exchange medium inlet and the second heat exchange medium outlet are arranged on the first shell wall of the shell and/or the second shell wall of the shell.
8. A heat exchanger having a heat exchange tube of non-circular cross-section according to claim 7,
the second heat exchange medium inlet is located at a first position of the shell, the second heat exchange medium outlet is located at a second position of the shell, and the first position is far away from the first end of the shell compared with the second position.
9. The heat exchanger having a non-circular cross-section of the heat exchange tube of claim 8,
the heat exchange tubes are arranged side by side, each flow direction distribution plate is provided with a plurality of air flow distribution holes, and the heat exchange tubes penetrate through the air flow distribution holes of each flow direction distribution plate one by one;
at least one inlet guide plate arranged in the heat exchange space and opposite to the second heat exchange medium inlet; and/or at least one outlet guide plate is arranged in the heat exchange space and is opposite to the second heat exchange medium outlet.
10. The heat exchanger having a non-circular cross-section of the heat exchange tube of claim 9,
the inlet baffle is a plurality of, and each inlet baffle includes: the first plates of the inlet guide plates are distributed in the extension direction of the heat exchange tube, and fluid at the second heat exchange medium inlet is divided to the peripheries of different heat exchange tubes.
11. The heat exchanger having a non-circular cross-section of the heat exchange tube of claim 10,
each inlet baffle includes: and the second plates of the plurality of inlet guide plates are distributed in the length direction of the cross section of the heat exchange tube.
12. The heat exchanger having a non-circular cross-section of the heat exchange tube of claim 9,
the outlet baffle is a plurality of, and every outlet baffle includes: and the third plates of the plurality of inlet guide plates are distributed in the length direction of the cross section of the heat exchange tube, and guide the fluid on the periphery of different heat exchange tubes to the second heat exchange medium outlet.
13. The heat exchanger having a non-circular cross-section of the heat exchange tube of claim 12,
each outlet baffle includes: and the fourth plates of the outlet guide plates are distributed in the extension direction of the heat exchange tube.
14. A method of exchanging heat in a heat exchanger having a heat exchange tube of any one of claims 1 to 13 which is non-circular in cross-section, comprising:
and introducing a first heat exchange medium to the first heat exchange medium inlet, and introducing a second heat exchange medium to the second heat exchange medium inlet, so that the first heat exchange medium of the first heat exchange passage in the heat exchange pipe and the second heat exchange medium of the second heat exchange passage outside the heat exchange pipe perform countercurrent heat exchange.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810953940.0A CN110849180A (en) | 2018-08-21 | 2018-08-21 | Heat exchanger with non-circular cross section of heat exchange tube and heat exchange method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810953940.0A CN110849180A (en) | 2018-08-21 | 2018-08-21 | Heat exchanger with non-circular cross section of heat exchange tube and heat exchange method thereof |
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| CN110849180A true CN110849180A (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810953940.0A Pending CN110849180A (en) | 2018-08-21 | 2018-08-21 | Heat exchanger with non-circular cross section of heat exchange tube and heat exchange method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113865153A (en) * | 2021-09-22 | 2021-12-31 | 珠海格力电器股份有限公司 | Heat exchanger and heat pump air conditioning unit |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5893410A (en) * | 1997-06-09 | 1999-04-13 | General Electric Co. | Falling film condensing heat exchanger with liquid film heat transfer |
| US6089312A (en) * | 1998-06-05 | 2000-07-18 | Engineers And Fabricators Co. | Vertical falling film shell and tube heat exchanger |
| CN1275707A (en) * | 1999-05-31 | 2000-12-06 | 上原春男 | Absorption device |
| CN1467450A (en) * | 2002-07-09 | 2004-01-14 | 三星电子株式会社 | Heat exchanger |
| US20050167089A1 (en) * | 2004-02-04 | 2005-08-04 | The Japan Steel Works, Ltd. | Multi-tube heat exchanger |
| CN203464544U (en) * | 2013-09-13 | 2014-03-05 | 广东欧科空调制冷有限公司 | Heat exchanger of air-cooled heat pump air conditioner |
| CN204924005U (en) * | 2015-07-22 | 2015-12-30 | 洛阳明远石化技术有限公司 | Pipe plate heat exchanger |
| CN208847004U (en) * | 2018-08-21 | 2019-05-10 | 洛阳超蓝节能技术有限公司 | The non-circular heat exchanger in the section of heat exchanger tube |
-
2018
- 2018-08-21 CN CN201810953940.0A patent/CN110849180A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5893410A (en) * | 1997-06-09 | 1999-04-13 | General Electric Co. | Falling film condensing heat exchanger with liquid film heat transfer |
| US6089312A (en) * | 1998-06-05 | 2000-07-18 | Engineers And Fabricators Co. | Vertical falling film shell and tube heat exchanger |
| CN1275707A (en) * | 1999-05-31 | 2000-12-06 | 上原春男 | Absorption device |
| CN1467450A (en) * | 2002-07-09 | 2004-01-14 | 三星电子株式会社 | Heat exchanger |
| US20050167089A1 (en) * | 2004-02-04 | 2005-08-04 | The Japan Steel Works, Ltd. | Multi-tube heat exchanger |
| CN203464544U (en) * | 2013-09-13 | 2014-03-05 | 广东欧科空调制冷有限公司 | Heat exchanger of air-cooled heat pump air conditioner |
| CN204924005U (en) * | 2015-07-22 | 2015-12-30 | 洛阳明远石化技术有限公司 | Pipe plate heat exchanger |
| CN208847004U (en) * | 2018-08-21 | 2019-05-10 | 洛阳超蓝节能技术有限公司 | The non-circular heat exchanger in the section of heat exchanger tube |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113865153A (en) * | 2021-09-22 | 2021-12-31 | 珠海格力电器股份有限公司 | Heat exchanger and heat pump air conditioning unit |
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