CN112013709A - Distribution pipe and heat exchanger - Google Patents
Distribution pipe and heat exchanger Download PDFInfo
- Publication number
- CN112013709A CN112013709A CN201910468883.1A CN201910468883A CN112013709A CN 112013709 A CN112013709 A CN 112013709A CN 201910468883 A CN201910468883 A CN 201910468883A CN 112013709 A CN112013709 A CN 112013709A
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- Prior art keywords
- distribution pipe
- cavity
- pipe
- heat exchange
- hole
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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
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
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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
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
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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
- F28F9/02—Header boxes; End plates
- F28F9/0202—Header boxes having their inner space divided by partitions
Abstract
The invention discloses a distribution pipe and a heat exchanger, wherein the distribution pipe is provided with a pipe wall and an inner cavity, the inner cavity of the distribution pipe is provided with at least two partition plates extending along the length direction of the distribution pipe, the at least two partition plates comprise a first partition plate and a second partition plate, the first partition plate and the second partition plate are arranged in parallel, the at least two partition plates divide the inner cavity of the distribution pipe into a plurality of cavities, the pipe walls of the distribution pipe corresponding to the plurality of cavities are provided with a group of through holes, and the through holes are communicated with the inner cavity of the distribution pipe. The distribution pipe is applied to the heat exchanger, can relatively improve the distribution uniformity of the refrigerant in the heat exchanger and is beneficial to processing and manufacturing.
Description
Technical Field
The invention relates to the technical field of heat exchangers, in particular to a distribution pipe and a heat exchanger.
Background
In the related art, the uniformity of refrigerant distribution in the heat exchanger needs to be improved.
Disclosure of Invention
To this end, an aspect of the present invention provides a distribution pipe, which is applied to a heat exchanger to relatively improve the uniformity of refrigerant distribution in the heat exchanger.
The invention also provides a heat exchanger.
According to the embodiment of the first aspect of the present invention, the distribution pipe has a pipe wall and an inner cavity, the inner cavity of the distribution pipe is provided with at least two partition plates extending along a length direction of the distribution pipe, the at least two partition plates include a first partition plate and a second partition plate, the first partition plate and the second partition plate are arranged in parallel, the at least two partition plates partition the inner cavity of the distribution pipe into a plurality of cavities, the pipe walls of the distribution pipe corresponding to the plurality of cavities are provided with a group of through holes, and the through holes are communicated with the inner cavity of the distribution pipe.
According to the distribution pipe provided by the embodiment of the invention, the inner cavity of the distribution pipe is divided into the plurality of cavities by arranging the at least two partition plates in the inner cavity of the distribution pipe, and the first partition plate and the second partition plate of the at least two partition plates are parallel to each other, so that a refrigerant can respectively enter the plurality of cavities of the distribution pipe from one end of the distribution pipe and is uniformly distributed to the inner cavity of the collecting pipe and the plurality of heat exchange pipes of the heat exchanger through the plurality of cavities of the distribution pipe. Therefore, the distribution uniformity of the refrigerant in the heat exchanger can be relatively improved by applying the distribution pipe to the heat exchanger. And the inner cavities of the distribution pipes are provided with the parallel partition plates, so that compared with the non-parallel partition plates, the distribution pipes are more beneficial to processing and manufacturing and uniform distribution of the refrigerant.
In some embodiments, the cross-sectional area of a plurality of the cavities is the same.
In some embodiments, a plurality of sets of the through holes are adjacently arranged in the circumferential direction of the distribution pipe, and the through holes are arranged in a staggered manner along the length direction of the distribution pipe.
A heat exchanger according to an embodiment of the second aspect of the invention comprises: the collecting pipe is provided with a first end, a second end, a pipe wall and an inner cavity, and the inner cavity of the collecting pipe comprises a first cavity and a second cavity which are arranged at intervals along the length direction of the collecting pipe; the distribution pipe is provided with a first end, a second end, a pipe wall and an inner cavity, the first end of the distribution pipe is a fluid inlet, the second end of the distribution pipe extends into the inner cavity of the collecting pipe from the first end of the collecting pipe, the inner cavity of the distribution pipe comprises a first cavity and a second cavity which are arranged at intervals along the circumferential direction of the distribution pipe, the pipe wall of the distribution pipe is provided with a through hole, the through hole comprises a first through hole and a second through hole, the first through hole is communicated with the first cavity and the first cavity, and the second through hole is communicated with the second cavity and the second cavity; the heat exchange tubes are arranged in the length direction of the collecting pipe and are provided with a first end and an inner cavity, the first ends of the heat exchange tubes penetrate through the pipe wall of the collecting pipe and are inserted into the inner cavity of the collecting pipe, and the inner cavities of the heat exchange tubes are communicated with the inner cavity of the collecting pipe.
According to the heat exchanger provided by the embodiment of the invention, the inner cavity of the distribution pipe is provided to comprise the first cavity and the second cavity which are arranged at intervals along the circumferential direction of the distribution pipe, each cavity extends along the length direction of the distribution pipe, the inner cavity of the collecting pipe is provided to comprise the first cavity and the second cavity which are arranged at intervals along the length direction of the collecting pipe, the first cavity is communicated with the first cavity through the first through hole, and the second cavity is communicated with the second cavity through the second through hole. Therefore, the refrigerant is distributed more uniformly in the heat exchanger through the sub-cavities of the distribution pipe and the sub-cavities of the collecting pipe, namely the distribution uniformity of the refrigerant in the heat exchanger is improved.
In one embodiment, the heat exchange tubes include a plurality of first heat exchange tubes and a plurality of second heat exchange tubes, the plurality of first heat exchange tubes are arranged at intervals along the length direction of the collecting pipe, the plurality of second heat exchange tubes are arranged at intervals along the length direction of the collecting pipe, the first heat exchange tubes are communicated with the first cavity, and the second heat exchange tubes are communicated with the second cavity.
In one embodiment, the heat exchanger further comprises a baffle plate, the first chamber and the second chamber are separated by the baffle plate, the baffle plate is provided with an opening for the distribution pipe to pass through, the peripheral profile of the baffle plate comprises a first arc-shaped section, a first connecting section, a second arc-shaped section and a second connecting section, the diameter of the circle where the first arc-shaped section is located is larger than that of the circle where the second arc-shaped section is located, the first end of the first arc-shaped section is connected with the first end of the first connecting section, the second end of the first connecting section is connected with the first end of the second arc-shaped section, the second end of the second arc-shaped section is connected with the first end of the second connecting section, and the second end of the second connecting section is connected with the second end of the first arc-shaped section; the heat exchanger further comprises a partition extending along the length of the distributor tube to separate the first and second chambers.
In one embodiment, the partition plate is provided in plurality, and the plurality of partition plates are arranged in parallel with each other.
In one embodiment, the first through hole is a plurality of through holes, the second through hole is a plurality of through holes, the first through holes and the second through holes are adjacently arranged in the circumferential direction of the distribution pipe, and the first through holes and the second through holes are arranged in a staggered manner along the length direction of the distribution pipe.
In one embodiment, the length of the distribution pipe extending into the inner cavity of the collecting pipe is less than the length of the collecting pipe, the inner cavity of the collecting pipe includes a first portion and a second portion arranged at intervals along the length direction of the collecting pipe, the second end of the distribution pipe extends into the first portion, the length of the distribution pipe extending into the collecting pipe is substantially equal to the length of the first portion, and the first portion is divided into a plurality of chambers.
In one embodiment, the heat exchanger further comprises fins, the fins are arranged between adjacent heat exchange tubes, and at least parts of the fins are connected with the heat exchange tubes.
Drawings
FIG. 1 is a schematic view of a heat exchanger according to one embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of the heat exchanger of fig. 1.
Fig. 3 is a schematic view of an exemplary distributor tube of the heat exchanger of fig. 1.
Fig. 4 is a schematic view of another exemplary distributor tube of the heat exchanger of fig. 1.
Fig. 5 is a schematic view of yet another exemplary distributor tube of the heat exchanger of fig. 1.
FIG. 6 is a schematic view of a heat exchanger according to another embodiment of the present invention.
FIG. 7 is an exemplary cross-sectional schematic view of the heat exchanger of FIG. 6.
Fig. 8 is a schematic view of the dispensing tube of fig. 7.
FIG. 9 is another exemplary cross-sectional schematic view of the heat exchanger of FIG. 6.
Fig. 10 is an exemplary schematic view of the dispensing tube of fig. 9.
Fig. 11 is another exemplary schematic view of the dispensing tube of fig. 9.
FIG. 12 is a schematic view of a heat exchanger according to yet another embodiment of the present invention.
FIG. 13 is an exemplary cross-sectional schematic view of the heat exchanger of FIG. 12.
FIG. 14 is an exemplary cross-sectional schematic view of the heat exchanger of FIG. 12.
Fig. 15 is a schematic structural view of a baffle plate of a heat exchanger according to an embodiment of the present invention.
FIG. 16 is a schematic view of a heat exchanger according to yet another embodiment of the present invention.
Reference numerals:
the heat exchanger (1) is provided with a heat exchanger,
manifold 11, chamber 111, first chamber 1111, second chamber 1112, third chamber 1113, first portion 101, second portion 102,
a dispensing tube 12, a cavity 121, a first cavity 1211, a second cavity 1212, a third cavity 1213,
the number of the partition plates 13 is such that,
a heat exchange pipe 14, a first heat exchange pipe 141, a second heat exchange pipe 142, a third heat exchange pipe 143,
a baffle 15, a first arcuate section 151, a second arcuate section 152, a first connecting section 153, a second connecting section 154,
a through hole 16, a first through hole 161, a second through hole 162, a third through hole 163,
and a fin 17.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature. Exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. The features of the following examples and embodiments can be supplemented or combined with each other without conflict.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
Exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.
Distribution tubes, heat exchangers and heat exchange systems according to embodiments of the present invention are described below with reference to fig. 1-16.
As shown in fig. 1 to 16, a heat exchanger 1 according to an embodiment of the present invention includes a collecting main 11, a distributing pipe 12, and heat exchange pipes 14. The manifold 11 has a first end, a second end, a tube wall, and an interior cavity, the interior cavity of the manifold 11 including a plurality of chambers 111 spaced apart along the length of the manifold 11. In particular, the heat exchanger 1 further comprises baffles 15, with adjacent chambers 111 being separated by baffles 15.
The distribution pipe 12 has a first end (the left end of the distribution pipe 12 shown in fig. 1) and a second end (the right end of the distribution pipe 12 shown in fig. 1), the first end of the distribution pipe 12 is a refrigerant inlet, and the second end of the distribution pipe 12 extends into the inner cavity of the collecting pipe 11 from the first end of the collecting pipe 11. The baffle 15 is provided with openings to facilitate the passage of the distribution pipe 12. The inner cavity of the dispensing tube 12 comprises a plurality of cavities 121 arranged at intervals along the circumference of the dispensing tube 12. In particular, the heat exchanger 1 further comprises a partition 13, the partition 13 extending along the length of the distribution pipe 12, adjacent cavities 121 being spaced apart by the partition 13. As shown in fig. 2 to 5, the partition 13 extends in the same direction as the distribution pipe 12 and is configured as an elongated partition 13. The partition 13 may divide the inner cavity of the distribution pipe 12 into a plurality of independent cavities 121, and each cavity 121 is connected to an inlet of the refrigerant.
The tube walls of the distribution tubes 12 corresponding to the plurality of cavities 121 are all provided with a group of through holes 16. In other words, the through hole 16 communicating with the chamber 111 of the header 11 is formed on the pipe wall corresponding to each cavity 121, so as to ensure that each independent cavity 121 can communicate with the header 11, and the refrigerant in each cavity 121 can enter different chambers 111 of the header 11.
The number of the cavities 121 is the same as that of the cavities 111, and the cavities 121 and the cavities 111 are respectively and correspondingly communicated through the sets of through holes 16. It should be noted here that, the plurality of cavities 121 and the plurality of chambers 111 are correspondingly communicated, which means that one cavity 121 is communicated with one chamber 111, and each cavity 121 enters the chamber 111 of the corresponding collecting pipe 11 through the corresponding group of through holes 16 on the pipe wall of the distribution pipe 12, so that the refrigerant in one cavity 121 can only enter the corresponding chamber 111, and the amount of the refrigerant entering into each chamber 111 is substantially the same, thereby improving the uniformity of refrigerant distribution in the heat exchanger 1.
As shown in fig. 1-5, the inner cavity of the dispensing tube 12 comprises a first cavity 1231 and a second cavity 1232, the first cavity 1231 and the second cavity 1232 being spaced apart by a partition 13 along the circumference of the dispensing tube 12. The through holes 16 include a first through hole 161 and a second through hole 162, the first through hole 161 being at least one and forming one set of through holes 16, the second through hole 162 being at least one and forming another set of through holes 16. The first through hole 161 is communicated with the first cavity 1231, and the second through hole 162 is communicated with the second cavity 1232. In other words, the first through hole 161 is provided on the tube wall of the dispensing tube 12 corresponding to the first cavity 1231, and the second through hole 162 is provided on the tube wall of the dispensing tube 12 corresponding to the second cavity 1232.
The internal cavity of the manifold 11 includes a first chamber 1111 and a second chamber 1112 spaced along the length of the manifold 11. The first through hole 161 communicates the first chamber 1111 and the first cavity 1231, and the second through hole 162 communicates the second chamber 1112 and the second cavity 1232. In other words, the first through hole 161 opens at the wall of the dispensing tube 12 in the first chamber 1111 and the second through hole 162 opens at the wall of the dispensing tube 12 in the second chamber 1112. Since the first through hole 161 corresponds to the first cavity 1231, the second through hole 162 corresponds to the second cavity 1232, and the first cavity 1231 and the second cavity 1232 are spaced apart along the circumference of the distribution pipe 12, the first through hole 161 and the second through hole 162 are staggered along the length direction of the distribution pipe 12, that is, the first through hole 161 and the second through hole 162 are not aligned along the length direction of the distribution pipe 12.
A plurality of heat exchange tubes 14 are arranged along the length direction (the left-right direction shown in fig. 1) of the header 11. Preferably, as shown in fig. 1, the plurality of heat exchange tubes 14 are arranged at regular intervals along the length direction of the header 11, i.e., the distances between the adjacent heat exchange tubes 14 are equal. Each heat exchange tube 14 has a first end (the upper end of the heat exchange tube 14 shown in fig. 1) and an inner cavity, the first end of the heat exchange tube 14 is inserted into the inner cavity of the header 11 through the tube wall of the header 11, and the inner cavity of the heat exchange tube 14 communicates with the inner cavity of the header 11.
During the operation of the heat exchanger 1, the refrigerant may enter the inner cavity of the distribution pipe 12 through the first end of the distribution pipe 12, the refrigerant flows from the first end to the second end in the distribution pipe 12, and the refrigerant may enter the collecting pipe 11 through the through holes 16 on the pipe wall of the distribution pipe 12. The first end of the collecting pipe 11 is provided with an inlet suitable for the distribution pipe 12 to enter, the pipe wall of the distribution pipe 12 is sealed with the inlet of the first end of the collecting pipe 11, the second end of the collecting pipe 11 is closed, a plurality of heat exchange pipes 14 are arranged in the collecting pipe 11, the first ends of the heat exchange pipes 14 penetrate through the pipe wall of the collecting pipe 11, the first ends of the heat exchange pipes 14 are provided with openings so that the inner cavities of the heat exchange pipes 14 are communicated with the inner cavity of the collecting pipe 11, refrigerant in the collecting pipe 11 can enter the inner cavity of the heat exchange pipes 14 through the first ends of the heat exchange pipes 14, and the.
According to the heat exchanger of the embodiment of the present application, by including a plurality of independent cavities 121 in the inner cavity of the distribution pipe 12, mutual interference between the cavities 121 does not occur; by including multiple independent chambers 111 within the interior of the manifold 11, no interference between the chambers occurs. Each cavity 121 is independently communicated with one cavity 111 of the collecting pipe 11, the refrigerant in the distributing pipe 12 can enter different cavities 111 of the collecting pipe 11 through the plurality of independent cavities 121, the cavities 121 and the cavities 111 cannot be affected with each other, the refrigerant enters each cavity 121 from a refrigerant inlet at the first end of the distributing pipe 12, the refrigerant enters different cavities 111 of the collecting pipe 11 through each cavity 121, the refrigerant in each cavity 111 is relatively uniformly distributed, so that the refrigerant is more uniformly distributed in the inner cavity of the collecting pipe 11, the uniformity of the refrigerant entering the plurality of heat exchange pipes 14 is further improved, and the heat dissipation efficiency of the heat exchanger 1 is improved.
In some embodiments, the cross-sectional area of the plurality of cavities 121 is the same. As shown in fig. 3, the length of each cavity 121 is identical to the length of the distribution pipe 12, and the cross-sectional area of each cavity 121 is the same. Thereby, the refrigerant can be uniformly distributed into each cavity 121 at the first end of the distribution pipe 12.
Further, as shown in fig. 3, the cross-sectional area of the header 11 is uniform along the length of the header 11, and the plurality of chambers 111 have the same length. Each cavity 121 is connected to a corresponding chamber 111, the refrigerant in the cavity 121 enters each chamber 111 after being evenly distributed, and the flow rates of the refrigerant in each chamber 111 in the collecting main 11 are the same.
In some embodiments, the heat exchange tubes 14 are arranged in groups spaced along the length of the header 11. The heat exchange tubes 14 in each group are arranged at intervals along the length direction of the collecting main 11, the number of the heat exchange tubes 14 in the multiple groups is the same, and the heat exchange tubes 14 in the multiple groups and the multiple chambers 111 are respectively and correspondingly communicated through multiple groups of through holes 16.
Each chamber 111 corresponds to a set of heat exchange tubes 14 and each chamber 111 communicates with a corresponding set of heat exchange tubes 14. The number of the heat exchange tubes 14 communicated with different chambers 111 is the same, and the heights of the heat exchange tubes 14 extending into the inner cavity of the collecting main 11 are consistent. The refrigerant enters each cavity 121 of the distribution pipe 12 at the inlet of the first end of the distribution pipe 12 and enters the different chambers 111 through each cavity 121. The refrigerant enters the group of heat exchange tubes 14 corresponding to the chamber 111 in the chamber 111, so that the flow of the refrigerant entering the heat exchange tubes 14 communicated with each chamber 111 is the same, and the refrigerant in each chamber 111 is further uniformly distributed, thereby further improving the uniformity of the refrigerant distribution of the heat exchanger 1, fully playing the heat dissipation area of the heat exchange tubes and improving the heat dissipation efficiency of the heat exchanger 1.
In some embodiments, the heat exchange tubes 14 are flat tubes, also referred to in the industry as microchannel flat tubes, and the use of flat tubes is beneficial to reduce the weight and size of the air conditioner. The flat tube is usually provided with a plurality of channels for the flow of refrigerant therein. Adjacent channels are isolated from each other. A plurality of passageways are arranged in a row, influence the width of flat pipe jointly. The flat pipe is flat, and the length and the width of the flat pipe are respectively greater than the width and the thickness of the flat pipe. The length direction of the flat pipe is the flowing direction of the refrigerant determined by the channel in the flat pipe. The length direction of the flat pipe can be a straight line type, a broken line type, a bending type and the like. The flat tube described here is not limited to this type, and may be in other forms. For example, adjacent channels may not be completely isolated. As another example, all of the channels may be arranged in two rows, so long as the width is still greater than the thickness.
As shown in fig. 1-5, in some embodiments, the partition 13 is one, and the partition 13 is disposed in the inner cavity of the dispensing tube 12 and extends along the length direction of the dispensing tube 12 to divide the inner cavity of the dispensing tube 12 into a first cavity 1211 and a second cavity 1212. The length of the distribution pipe 12 extending into the inner cavity of the collecting main 11 is substantially equal to the length of the collecting main 11, and one baffle 15 is provided, and the baffle 15 divides the inner cavity of the collecting main 11 into a plurality of first chambers 1111 and second chambers 1112 arranged at intervals along the length direction of the collecting main 11. The first cavity 1211 communicates with the first chamber 1111 and the second cavity 1212 communicates with the second chamber 1112. The volume of the first cavity 1211 is the same as the volume of the second cavity 1212, and the volume of the first chamber 1111 is the same as the volume of the second chamber 1112.
The second cavity 1212 and the first cavity 1211 extend along the length direction of the distribution tube 12 and have the same volume, so that the cross-sectional areas of the first cavity 1211 and the second cavity 1212 are the same and the flow rate is the same. The refrigerant enters the first and second cavities 1211 and 1212 through the first end of the distribution tube 12. The baffle 15 divides the inner cavity of the header 11 into a first chamber 1111 and a second chamber 1112 having the same volume. The first chamber 1111 is communicated with the first cavity 1211, and the second chamber 1112 is communicated with the second cavity 1212, so as to ensure that the flow rate of the refrigerant entering the first chamber 1111 through the first cavity 1211 is the same as the flow rate of the refrigerant entering the second chamber 1112 through the second cavity 1212.
More chambers and cavities which are communicated with each other can be arranged on the basis of the above-mentioned embodiments, as shown in fig. 6-11, the cavity 121 further comprises a third cavity 1213, the cavity 111 further comprises a third cavity 1113, and the third cavity 1213 is communicated with the third cavity 1113. As shown in fig. 12-14, the chamber 121 further includes a fourth chamber, and the chamber 111 further includes a fourth chamber, the fourth chamber being in communication with the fourth chamber.
In the embodiment shown in fig. 1-5, the plurality of heat exchange tubes 14 comprises a plurality of first heat exchange tubes 141 spaced apart along the length of the header 11 and a plurality of second heat exchange tubes 142 spaced apart along the length of the header 11. The number of the first heat exchanging pipes 141 is the same as that of the second heat exchanging pipes 142. The plurality of first heat exchanging pipes 141 are communicated with the first chamber 1111, and the plurality of second heat exchanging pipes 142 are communicated with the second chamber 1112.
In this embodiment, the first chamber 1111 and the second chamber 1112 have the same volume, length and cross section, and the amount of the refrigerant entering the first cavity 1211 and the second cavity 1212 is the same. Therefore, the liquid levels of the refrigerant in the first chamber 1111 and the second chamber 1112 are the same. The number of the first heat exchange tubes 141 in the first chamber 1111 is the same as the number of the second heat exchange tubes 142 in the second chamber 1112, so that the speed of the refrigerant entering the heat exchange tubes 14 is the same, and the flow rate of the refrigerant in each heat exchange tube 14 is further ensured to be the same.
Likewise, the heat exchange pipe 14 in the embodiment shown in fig. 6 to 11 may further include a plurality of third heat exchange pipes 143, and the number of the third heat exchange pipes 143 is the same as the number of the first heat exchange pipes 141 and the number of the second heat exchange pipes 142. The plurality of third heat exchange tubes 143 communicate with the third chamber 1113.
The heat exchange tube 14 in the embodiment shown in fig. 12-14 can also include a plurality of fourth heat exchange tubes. The number of the fourth heat exchanging pipes is the same as the number of the third heat exchanging pipes 143, the number of the first heat exchanging pipes 141, and the number of the second heat exchanging pipes 142. The plurality of fourth heat exchange tubes are communicated with the fourth cavity.
In one embodiment as shown in fig. 1 to 5, the wall of the distribution tube 12 includes a first section and a second section sequentially arranged along the length direction of the distribution tube 12, the through hole 16 includes a first through hole 161 and a second through hole 162, the first through hole 161 is disposed in the first section and has a plurality of through holes, the first through hole 161 communicates with the first cavity 1211 and the first chamber 1111, the second through hole 162 is disposed in the second section and has a plurality of through holes, the second through hole 162 communicates with the second cavity 1212 and the second chamber 1112, and the plurality of first through holes 161 and the plurality of second through holes 162 are staggered along the length direction of the distribution tube 12.
In some embodiments, as shown in fig. 7, 8 and 13, the cavity 121 has a fan-shaped cross-section, the cross-section of the distribution pipe 12 is configured as a circle, and a plurality of partition plates 13 are disposed in the circle of the distribution pipe 12. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The partition 13 is configured as a rectangular partition 13 having the same length as the distribution pipe 12, the partition 13 extending in the same direction as the distribution pipe 12, and the partition 13 having a first side edge and a second side edge which are opposed in width, wherein the first side edge is connected to the inner peripheral surface of the distribution pipe 12, and the second side edge is disposed through the axis of the distribution pipe 12.
The refrigerant enters the distribution pipe 12 through the refrigerant inlet at the first end of the distribution pipe 12, the refrigerant is uniformly distributed at the first end of the distribution pipe 12, and the cross section of the cavity 121 is fan-shaped, so that the flow rate of the refrigerant entering each cavity 121 is approximately the same, and the distribution uniformity of the refrigerant among different cavities 121 is improved.
In other embodiments, the partition 13 is plural, and the plural partitions 13 are arranged in parallel and at intervals. In other words, as shown in fig. 9, 10, 11 and 14, there are at least two partition plates 13, each of the at least two partition plates 13 extends along the length direction of the distribution pipe 12, the at least two partition plates 13 include a first partition plate and a second partition plate, and the first partition plate and the second partition plate are parallel to and spaced apart from each other, and the partition plates 13 have a first side edge and a second side edge which are opposite in width, wherein the first side edge is connected to the inner circumferential surface of the distribution pipe 12, and the second side edge is also connected to the inner circumferential surface of the distribution pipe 12.
According to the heat exchanger of the embodiment of the application, the inner cavity of the distribution pipe 12 is divided into the plurality of cavities 121 by the at least two partition plates 13 which are parallel to each other and are arranged at intervals, so that the refrigerant can respectively enter the plurality of cavities 121 of the distribution pipe 12 from one end of the distribution pipe 12 and is uniformly distributed to the inner cavity of the collecting main 11 and the plurality of heat exchange tubes 14 of the heat exchanger 1 through the plurality of cavities 121 of the distribution pipe 12. Thus, the distribution pipe 12 is applied to the heat exchanger 1, so that the uniformity of the distribution of the refrigerant in the heat exchanger 1 can be relatively improved. Moreover, the partition plates 13 arranged in parallel with each other in the inner cavity of the distribution pipe 12 are more beneficial to processing and manufacturing and uniform distribution of the refrigerant compared with non-parallel partition plates.
In some specific embodiments, the plurality of sets of through holes 16 are disposed adjacent in the circumferential direction of the distribution pipe 12. As shown in fig. 10, the first through hole 161 corresponding to the first cavity 1211, the second through hole 162 corresponding to the second cavity 1212, and the third through hole 163 corresponding to the third cavity 1213 are all located on the upper side of the dispensing tube 12. Alternatively, as shown in fig. 11, the first through hole 161 corresponding to the first cavity 1211, the second through hole 162 corresponding to the second cavity 1212, and the third through hole 163 corresponding to the third cavity 1213 are all located at the lower side of the dispensing tube 12. This makes it possible to further improve the uniformity of refrigerant distribution by substantially equalizing the opening directions of the plurality of sets of through holes 16 in the pipe wall of the distribution pipe 12.
In some embodiments, the sets of through holes 16 are staggered along the length of the distribution tube 12. In other words, adjacent sets of through holes 16 are not aligned in the length direction of the distribution pipe 12.
In some embodiments, as shown in fig. 3 to 5, the through hole 16 for correspondingly communicating the cavity 121 of the distribution pipe 12 with the chamber 111 of the collecting main 11 may be disposed at any position in the circumferential direction of the distribution pipe 12. Further, the opening direction of the through hole 16 is arbitrary. In a cross-section of the distribution pipe 12 having the through hole 16, an angle α between a line connecting a center of the through hole 16 and a center of the distribution pipe 12 and an axial direction of the through hole 16 is 0 ° < α <180 °.
In some embodiments, each set of through holes 16 is provided in plurality, the through holes 16 are spaced apart from each other, the through holes 16 communicate each cavity 121 of the distribution pipe 12 with one chamber 111 of the collecting pipe 11, the refrigerant in each cavity 121 of the distribution pipe 12 can enter into one chamber 111 of the collecting pipe 11 through the through holes 16, and the through holes 16 can make the refrigerant in the distribution pipe 12 flow into the collecting pipe 11 quickly and uniformly, so as to increase the flow speed of the refrigerant in the distribution pipe 12 in the collecting pipe 11.
Wherein the through hole 16 may be provided in the bottom wall 122. The through holes 16 are arranged in a plurality of rows arranged at regular intervals in the width direction of the bottom wall 122. Each row of through holes 16 is evenly spaced along the length of the distribution pipe 12. The through holes 16 are uniformly formed along the width direction of the bottom wall 122, so that the refrigerant can uniformly flow into the header pipe 11 over the width of the distribution pipe 12. And the through holes 16 of each row are uniformly spaced along the length direction of the distribution pipe 12, wherein the through holes 16 are spaced at a distance in the length direction identical to the distance spaced by the plurality of heat exchange tubes 14 in the length direction, so that the refrigerant can uniformly flow into the collecting main 11 in the length direction of the distribution pipe 12.
In some embodiments, the length of the distribution pipe 12 extending into the inner cavity of the collecting pipe 11 is less than the length of the collecting pipe 11, the inner cavity of the collecting pipe 11 comprises a first portion 101 and a second portion 102 which are arranged at intervals along the length direction of the collecting pipe 11, the second end of the distribution pipe 12 extends into the first portion 101, the length of the distribution pipe 12 extending into the collecting pipe 11 is substantially equal to the length of the first portion 101, and the first portion 101 is divided into a plurality of chambers 111. As shown in fig. 16, the heat exchanger 1 is a two-pass heat exchanger, and the interior chamber of the header 11 is divided into a first portion 101 and a second portion 102, wherein the right end of the distributor tube 12 extends into the first portion 101 of the header 11 and does not extend into the second portion 102. Wherein the first section 101 includes a plurality of chambers 111 spaced along the length of the manifold 11. As shown in fig. 16, the first portion 101 is divided into two chambers 111 by a baffle 15. It will be appreciated that the inner cavity of the dispensing tube 12 is provided with a partition 13 to divide the inner cavity of the dispensing tube 12 into two chambers 121.
In some embodiments, as shown in fig. 1, 6, 12 and 16, the heat exchanger 1 further includes fins 17, the fins 17 are disposed between adjacent heat exchange tubes 14, at least a portion of the fins 17 is communicated with the heat exchange tubes 14, and the fins 17 are disposed between two adjacent heat exchange tubes 14, so that the heat exchange area of the heat exchange tubes 14 can be increased, the temperature between two adjacent heat exchange tubes 14 is more uniform, and the heat exchange efficiency of the heat exchanger 1 is improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The utility model provides a distribution pipe, its characterized in that, the distribution pipe has pipe wall and inner chamber, the inner chamber of distribution pipe is equipped with two at least edges the baffle that the length direction of distribution pipe extends, two at least baffles include first baffle and second baffle, first baffle with the mutual parallel arrangement of second baffle, two at least baffles will a plurality of cavitys are separated into to the inner chamber of distribution pipe, and are a plurality of the cavity corresponds the pipe wall of distribution pipe all is equipped with a set of through-hole, the through-hole with the inner chamber intercommunication of distribution pipe.
2. The distribution pipe of claim 1, wherein the cross-sectional areas of a plurality of said cavities are the same.
3. The distribution pipe according to claim 1, wherein a plurality of sets of the through holes are adjacently arranged in a circumferential direction of the distribution pipe, and the plurality of sets of the through holes are arranged in a staggered manner along a length direction of the distribution pipe.
4. A heat exchanger, comprising:
the collecting pipe is provided with a first end, a second end, a pipe wall and an inner cavity, and the inner cavity of the collecting pipe comprises a first cavity and a second cavity which are arranged at intervals along the length direction of the collecting pipe;
the distribution pipe is provided with a first end, a second end, a pipe wall and an inner cavity, the first end of the distribution pipe is a fluid inlet, the second end of the distribution pipe extends into the inner cavity of the collecting pipe from the first end of the collecting pipe, the inner cavity of the distribution pipe comprises a first cavity and a second cavity which are arranged at intervals along the circumferential direction of the distribution pipe, the pipe wall of the distribution pipe is provided with a through hole, the through hole comprises a first through hole and a second through hole, the first through hole is communicated with the first cavity and the first cavity, and the second through hole is communicated with the second cavity and the second cavity;
the heat exchange tubes are arranged in the length direction of the collecting pipe and are provided with a first end and an inner cavity, the first ends of the heat exchange tubes penetrate through the pipe wall of the collecting pipe and are inserted into the inner cavity of the collecting pipe, and the inner cavities of the heat exchange tubes are communicated with the inner cavity of the collecting pipe.
5. The heat exchanger according to claim 4, wherein the heat exchange tubes comprise a plurality of first heat exchange tubes and a plurality of second heat exchange tubes, the plurality of first heat exchange tubes are arranged at intervals along the length direction of the collecting main, the plurality of second heat exchange tubes are arranged at intervals along the length direction of the collecting main, the first heat exchange tubes are communicated with the first cavity, and the second heat exchange tubes are communicated with the second cavity.
6. The heat exchanger of claim 4, further comprising a baffle through which the first and second chambers are spaced apart, the baffle having an opening for the distribution tube to pass, the baffle having a peripheral profile comprising a first arcuate segment having a diameter greater than a diameter of a circle on which the second arcuate segment is located, a first end of the first arcuate segment being connected to a first end of the first connecting segment, a second end of the first connecting segment being connected to a first end of the second arcuate segment, a second end of the second arcuate segment being connected to a first end of the second connecting segment, and a second connecting segment having a second end of the second connecting segment being connected to a second end of the first arcuate segment;
the heat exchanger further comprises a partition extending along the length of the distributor tube to separate the first and second chambers.
7. The heat exchanger of claim 6, wherein the separator is plural, and the plural separators are arranged in parallel with each other.
8. The heat exchanger according to claim 7, wherein the first through hole is plural, the second through hole is plural, the plural first through holes and the plural second through holes are adjacently arranged in a circumferential direction of the distribution pipe, and the first through holes and the second through holes are arranged in a staggered manner in a length direction of the distribution pipe.
9. The heat exchanger of claim 4, wherein the length of the distribution pipe extending into the interior chamber of the header is less than the length of the header, the interior chamber of the header includes a first portion and a second portion spaced apart along the length of the header, the second end of the distribution pipe extends into the first portion, the length of the distribution pipe extending into the header is substantially equal to the length of the first portion, and the first portion is divided into a plurality of the chambers.
10. The heat exchanger according to any one of claims 4 to 9, further comprising fins provided between adjacent heat exchange tubes, at least parts of the fins being connected to the heat exchange tubes.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910468883.1A CN112013709A (en) | 2019-05-31 | 2019-05-31 | Distribution pipe and heat exchanger |
| PCT/CN2019/110060 WO2020237960A1 (en) | 2019-05-31 | 2019-10-09 | Distribution pipe and heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910468883.1A CN112013709A (en) | 2019-05-31 | 2019-05-31 | Distribution pipe and heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112013709A true CN112013709A (en) | 2020-12-01 |
Family
ID=73501111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910468883.1A Pending CN112013709A (en) | 2019-05-31 | 2019-05-31 | Distribution pipe and heat exchanger |
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| Country | Link |
|---|---|
| CN (1) | CN112013709A (en) |
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