CN114279237B - Heat exchanger and household appliance - Google Patents
Heat exchanger and household appliance Download PDFInfo
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- CN114279237B CN114279237B CN202111683195.0A CN202111683195A CN114279237B CN 114279237 B CN114279237 B CN 114279237B CN 202111683195 A CN202111683195 A CN 202111683195A CN 114279237 B CN114279237 B CN 114279237B
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Abstract
The invention discloses a heat exchanger and a household appliance, wherein a plurality of communicating cavities are arranged in a collecting pipe, two connecting ports are arranged on each communicating cavity, a plurality of heat exchange pipes can be respectively inserted into the plurality of connecting ports, then brazing is carried out, so that the welding automation degree of a fin pipe heat exchanger is improved, each communicating cavity is communicated with one end of the same side of two heat exchange pipes, each two adjacent heat exchange pipes are communicated through one communicating cavity, thereby replacing a U-shaped elbow, then refrigerant in a distributing cavity is conveyed into the corresponding communicating cavity through a plurality of distributing ports on the distributing cavity, and then each communicating cavity is communicated with a plurality of heat exchange pipes, thus a plurality of heat exchange flow paths which are mutually arranged in parallel are formed, and the plurality of heat exchange pipes are provided with a plurality of heat exchange flow paths which are arranged in parallel, so that the heat exchange efficiency and the efficiency of the heat exchanger are also ensured, and the heat exchange efficiency of the heat exchanger is high in automation degree and the heat exchange efficiency is also ensured.
Description
Technical Field
The invention relates to the field of electric appliances, in particular to a heat exchanger and a household appliance.
Background
The fin tube heat exchanger is provided with a plurality of heat exchange tubes side by side, each heat exchange tube is processed into a U shape through a bending process, in order to enable the heat exchange channels for flowing of cooling medium to be formed after the heat exchange tubes are communicated, the end parts of every two adjacent U-shaped tubes are required to be welded through thermal fusion welding through U-shaped elbows, but the thermal fusion welding requires manual welding, the automation degree is quite low, and in order to enable the heat exchange efficiency to be higher, two groups of heat exchange channels are arranged side by side in parallel.
In order to realize automation, the existing heat exchange tube is provided with a plurality of straight tubes side by side, two collecting pipes are respectively arranged at two ends of each straight tube, so that all the heat exchange tubes side by side are connected in parallel, but the quantity of the required refrigerant is larger, the heat exchange stroke is shorter, the heat exchange efficiency is not very high, and the mode can not realize the heat exchange flow paths of two parallel loops when the existing heat exchanger is U-shaped; the U-shaped finned tube heat exchanger is characterized in that a plurality of connecting tubes are arranged at one ends of the heat exchange tubes to communicate the heat exchange tubes, so that the existing U-shaped elbow connection is replaced, but the degree of automation is low, so that when the heat exchange tubes are U-shaped, the design of replacing at least two existing heat exchange flow paths can be realized while automatic welding is realized, and the problem to be solved is urgent.
Disclosure of Invention
The invention mainly aims to provide a heat exchanger, and aims to provide a heat exchanger with high automation degree and high heat exchange efficiency.
In order to achieve the above object, the heat exchanger according to the present invention includes a plurality of heat exchange tubes arranged side by side, the plurality of heat exchange tubes arranged side by side are connected by a communication structure, so that at least some of the plurality of heat exchange tubes are arranged in parallel, the communication structure includes at least one collecting pipe, the collecting pipe is arranged at one end of the plurality of heat exchange tubes, a plurality of communication cavities and a plurality of split cavities are formed in the collecting pipe, at least two first connection ports corresponding to two ends of the two heat exchange tubes are arranged on each communication cavity, a plurality of split ports are arranged on each split cavity, and each split port is arranged in communication with a corresponding one of the communication cavities, so that the collecting pipe can arrange at least some of the plurality of heat exchange tubes in parallel.
Optionally, the plurality of shunt cavities are located at one side of the plurality of communication cavities away from the plurality of heat exchange tubes;
a plurality of switching cavities are further formed in one side, close to the plurality of heat exchange tubes, of the collecting pipe, a second connecting port which is correspondingly connected with one end of one heat exchange tube is arranged on each switching cavity, and each switching cavity is communicated with the corresponding flow dividing cavity through one flow dividing port.
Optionally, the collecting pipe is also provided with a refrigerant inlet and a refrigerant outlet;
the plurality of distribution cavities comprise a first distribution cavity and a second distribution cavity, the first distribution cavity is communicated with the refrigerant inlet, and the second distribution cavity is communicated with the refrigerant outlet.
Optionally, the second diversion cavity is further provided with a junction port, and the junction port is communicated with the switching cavity;
the collecting pipe is also provided with a converging cavity, the converging cavity is provided with a refrigerant outlet, the converging cavity is communicated with another switching cavity, and the switching cavity communicated with the converging opening and the switching cavity communicated with the converging cavity are communicated with one another through at least one heat exchange pipe and one communication cavity.
Optionally, a plurality of the shunt ports on the second shunt cavity are adjacently arranged;
the collecting pipe is further provided with a plurality of buffer cavities, the buffer cavities are arranged between the communication cavities and the second shunt cavities, one side of each buffer cavity is communicated with one switching cavity, and the other side of each buffer cavity is communicated with the second shunt cavity through one shunt opening.
Optionally, a first partition part is further formed in the second shunt cavity to partition the second shunt cavity into two chambers, the junction port is arranged in one of the two chambers, and the plurality of shunt ports are arranged in the other of the two chambers;
the first separation part is provided with a diversion opening communicated with the two chambers, and the diversion opening is arranged towards the plurality of diversion openings.
Optionally, the cavity in which the plurality of shunt ports are located is further provided with a second partition portion, two side edges of the second partition portion are respectively connected with two side walls of the cavity, which are oppositely arranged, gaps are formed between two ends of the second partition portion and the inner wall of the cavity respectively, so that a circulation channel is formed between the peripheral side of the second partition portion and the inner wall of the cavity, and the plurality of shunt ports are located on the same side of the second partition portion.
Optionally, two collecting pipes are arranged, and the two collecting pipes are respectively arranged at two ends of the plurality of heat exchange pipes;
the plurality of heat exchange tubes comprises a plurality of heat exchange tube groups, and each heat exchange tube group comprises at least two heat exchange tubes;
at least four first connecting ports which are correspondingly connected with two ends of the heat exchange tube groups are arranged on each communication cavity, and each heat exchange tube group is communicated with two different communication cavities on two collecting pipes;
at least two split-flow ports are arranged on each split-flow cavity, and the two split-flow ports are communicated with the corresponding same communication cavity, so that a plurality of heat exchange tubes of each heat exchange tube group are arranged in parallel.
Optionally, the two collecting pipes are further provided with a refrigerant inlet and a refrigerant outlet;
the two collecting pipes are also provided with a conduction cavity, wherein two third connectors which are correspondingly connected with the two ends of the two heat exchange pipes are arranged on one conduction cavity, so that the two heat exchange pipes are communicated in series.
Optionally, a transition cavity is further formed in the two collecting pipes, a communication port corresponding to one end of one heat exchange pipe is arranged on the transition cavity, and a refrigerant inlet is further formed in the transition cavity.
The invention also provides a household appliance, which comprises the heat exchanger, wherein the heat exchanger comprises a plurality of heat exchange pipes which are arranged side by side, the plurality of heat exchange pipes which are arranged side by side are connected through a communication structure, so that at least part of the plurality of heat exchange pipes are arranged in parallel, the communication structure comprises at least one collecting pipe, the collecting pipe is arranged at one end of the plurality of heat exchange pipes, a plurality of communication cavities and a plurality of diversion cavities are formed in the collecting pipe, at least two first connecting ports which are correspondingly connected with two ends of the two heat exchange pipes are arranged on each communication cavity, a plurality of diversion ports are arranged on each diversion cavity, and each diversion port is communicated with a corresponding communication cavity, so that the collecting pipe can set at least part of the plurality of heat exchange pipes to be arranged in parallel.
Optionally, the household appliance comprises an air conditioner.
In the technical scheme provided by the invention, the heat exchanger comprises a plurality of heat exchange tubes which are arranged side by side, the plurality of heat exchange tubes which are arranged side by side are connected through a communication structure, so that at least part of the heat exchange tubes in the plurality of heat exchange tubes are arranged in parallel, the communication structure comprises at least one collecting pipe, the collecting pipe is arranged at one end of the plurality of heat exchange tubes, a plurality of communication cavities and a plurality of diversion cavities are formed in the collecting pipe, each communication cavity is provided with at least two first connecting ports which are correspondingly connected with two ends of the two heat exchange tubes, each diversion cavity is provided with a plurality of diversion openings, each diversion opening is communicated with one corresponding communication cavity, so that the collecting pipe can be used for arranging at least part of the heat exchange tubes in parallel, two connecting ports are arranged in the collecting pipe, the plurality of heat exchange tubes can be respectively inserted into the connecting ports, then brazing is carried out, the degree of automation of welding is improved, and each communication cavity is provided with a plurality of diversion cavities which are correspondingly connected with one side of heat exchange channels, and then the plurality of heat exchange channels are correspondingly connected in parallel, and the plurality of heat exchange channels are also connected in parallel, so that the plurality of heat exchange channels are mutually connected through the plurality of heat exchange channels are formed, and the heat exchange channels are respectively, and the heat exchange channels are correspondingly connected in parallel are also provided with one side by a plurality of heat exchange cavities, and the heat exchange cavities are connected in each heat exchange cavity is provided with a plurality of heat exchange channels, and a heat exchange channels are connected in each heat exchanger, and a heat exchanger is provided, and the heat exchanger has high heat exchange efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of an embodiment of a heat exchanger according to the present invention;
FIG. 2 is a schematic perspective view of a portion of the structure of the heat exchanger of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the heat exchanger B-B of FIG. 2;
FIG. 4 is a schematic cross-sectional view of the heat exchanger A-A of FIG. 2;
fig. 5 is a schematic perspective view of another embodiment of a heat exchanger according to the present invention;
FIG. 6 is a schematic perspective view of a portion of the structure of the heat exchanger of FIG. 5;
FIG. 7 is a schematic cross-sectional view of the heat exchanger C-C of FIG. 6;
FIG. 8 is a schematic cross-sectional view of the heat exchanger B-B of FIG. 6;
FIG. 9 is a schematic cross-sectional view of the heat exchanger A-A of FIG. 6;
fig. 10 is a schematic plan view of another embodiment of a heat exchanger provided by the present invention.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 100 | Heat exchanger | 26 | Converging cavity |
| 1 | Heat exchange tube | 27 | Buffer cavity |
| 2 | Collecting pipe | b | Junction port |
| 21 | Refrigerant inlet | 31 | A first partition part |
| 22 | Refrigerant outlet | 2421 | Chamber chamber |
| 23 | Communication cavity | c | Flow guiding port |
| 24 | Shunt cavity | 32 | A second partition part |
| a | Shunt opening | 10 | Heat exchange tube group |
| 25 | Switching cavity | 28 | Conduction cavity |
| 241 | First shunt cavity | 29 | Transition cavity |
| 242 | Second shunt cavity |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The fin tube heat exchanger is provided with a plurality of heat exchange tubes side by side, each heat exchange tube is processed into a U shape through a bending process, in order to enable the heat exchange channels for flowing of cooling medium to be formed after the heat exchange tubes are communicated, the end parts of every two adjacent U-shaped tubes are required to be welded through thermal fusion welding through U-shaped elbows, but the thermal fusion welding requires manual welding, the automation degree is quite low, and in order to enable the heat exchange efficiency to be higher, two groups of heat exchange channels are arranged side by side in parallel. In order to realize automation, the existing heat exchange tube is provided with a plurality of straight tubes side by side, two collecting pipes are respectively arranged at two ends of each straight tube, so that all the heat exchange tubes side by side are connected in parallel, but the quantity of the required refrigerant is larger, the heat exchange stroke is shorter, the heat exchange efficiency is not very high, and the mode can not realize the heat exchange flow paths of two parallel loops when the existing fin tube heat exchanger is U-shaped; the U-shaped finned tube heat exchanger is characterized in that a plurality of connecting tubes are arranged at one ends of the heat exchange tubes to communicate the heat exchange tubes, so that the existing U-shaped elbow connection is replaced, but the degree of automation is low, so that when the heat exchange tubes are U-shaped, the design of replacing at least two existing heat exchange flow paths can be realized while automatic welding is realized, and the problem to be solved is urgent.
In order to solve the above-mentioned problems, the present invention provides a heat exchanger 100, and fig. 1 to 10 are specific embodiments of the heat exchanger 100 provided by the present invention.
Referring to fig. 1 to 4, the heat exchanger 100 includes a plurality of heat exchange tubes 1 disposed side by side, the plurality of heat exchange tubes 1 disposed side by side are connected by a communication structure, so that at least a portion of the plurality of heat exchange tubes 1 are disposed in parallel, the communication structure includes at least one collecting pipe 2, the collecting pipe 2 is disposed at one end of the plurality of heat exchange tubes 1, a plurality of communication cavities 23 and a plurality of distribution cavities 24 are formed in the collecting pipe 2, at least two first connection ports corresponding to two ends of the heat exchange tubes 1 are disposed in each communication cavity 23, a plurality of distribution ports a are disposed in each distribution cavity 24, and each distribution port a is disposed in communication with a corresponding communication cavity 23, so that the collecting pipe 2 can dispose at least a portion of the plurality of heat exchange tubes 1 in parallel.
In the technical solution provided in the present invention, the heat exchanger 100 includes a plurality of heat exchange tubes 1 arranged side by side, the plurality of heat exchange tubes 1 arranged side by side are connected by a communication structure, so that at least some of the plurality of heat exchange tubes 1 are arranged in parallel, the communication structure includes at least one collecting pipe 2, the collecting pipe 2 is arranged at one end of the plurality of heat exchange tubes 1, a plurality of communication cavities 23 and a plurality of diversion cavities 24 are formed in the collecting pipe 2, at least two first connection ports corresponding to two ends of the two heat exchange tubes 1 are arranged on each communication cavity 23, a plurality of diversion ports a are arranged on each diversion cavity 24, each diversion port a is arranged in communication with a corresponding communication cavity 23, so that the collecting pipe 2 can arrange at least some of the plurality of heat exchange tubes 1 in parallel, through arranging a plurality of communication cavities 23 in the collecting pipe 2, each communication cavity 23 is provided with two connectors, a plurality of heat exchange pipes 1 can be respectively inserted into the plurality of connectors, then brazing is carried out, so that the automation degree of welding is improved, each communication cavity 23 is communicated with one end of the same side of the two heat exchange pipes 1, each two adjacent heat exchange pipes 1 are communicated through one communication cavity 23, thereby replacing a U-shaped elbow, then the refrigerant in the distribution cavity 24 is conveyed into the corresponding communication cavity 23 through a plurality of distribution openings a on the distribution cavity 24, then each communication cavity 23 is communicated with a plurality of heat exchange pipes 1, thus a plurality of heat exchange flow paths which are mutually connected in parallel are formed, and the plurality of heat exchange pipes 1 have longer heat exchange strokes and a plurality of heat exchange flow paths which are arranged in parallel, so that the heat exchange efficiency and efficiency of the heat exchanger 100 are also ensured, thereby providing a heat exchanger 100 with high automation degree and high heat exchange efficiency.
Further, since the heat exchange tubes 1 and the collecting pipe 2 are welded at the sides close to each other, in order to facilitate the welding and assembling process, in this embodiment, the communication chambers 23 may be disposed at the sides close to the heat exchange tubes 1, the shunt chambers 24 may be disposed at the sides of the communication chambers 23 away from the heat exchange tubes 1, so that the heat exchange tubes 1 are aligned with the corresponding first connection ports of the communication chambers 23, the brazing can be conveniently realized, the plurality of split cavities 24 are arranged on the other sides of the plurality of communication cavities 23, so that the plurality of split cavities 24 with the split effect are far away from the interference of the end parts of the plurality of heat exchange tubes 1, and the split is realized directly through the split port a, so that the plurality of heat exchange tubes 1 need to be staggered when the split cavities 24 and the communication cavities 23 are arranged on the same side, and the interference is avoided. In order to facilitate the communication between the plurality of diversion openings a on one side of the communication cavity 23 far away from the heat exchange tube 1 and the corresponding communication cavity 23 to achieve parallel connection, a plurality of transfer cavities 25 are further formed on one side of the header 2 close to the plurality of heat exchange tubes 1, and a second connection port corresponding to one end of one heat exchange tube 1 is arranged on each transfer cavity 25, so that one end of the heat exchange tube 1 can be communicated with one side of the transfer cavity 25, and meanwhile, the other side of the transfer cavity 25 is communicated with the corresponding diversion cavity 24 through one diversion opening a, so that refrigerant in the diversion cavity 24 can flow into the corresponding transfer cavity 25 through each diversion opening a respectively, and then diversion is achieved through the plurality of transfer cavities 25, so that parallel connection is formed between the plurality of heat exchange tubes 1 communicated with the corresponding transfer cavities 25.
Further, in this embodiment, referring to fig. 4, in order to facilitate installation and processing, the header 2 is further provided with the refrigerant inlet 21 and the refrigerant outlet 22, and in order to achieve unification and standardization in the processing of the heat exchange tube 1, the lengths of the plurality of heat exchange tubes 1 are identical, so that all the ends of the heat exchange tube 1 can be integrally connected to the header 2, and then the ends of the heat exchange tube 1 are connected to each other through the header 2 to achieve the functions of communication and distribution flow paths, so that processing is also more convenient, so that the plurality of flow distribution cavities 24 comprise a first flow distribution cavity 241 and a second flow distribution cavity 242 for facilitating realization of flow distribution and junction, wherein in order to achieve unification and standardization in the processing of the heat exchange tube 1, the first flow distribution cavity 241 is further provided with the header 2 with the refrigerant inlet 21 and the refrigerant outlet 22, so that the refrigerant flows out of the first flow distribution cavity 241 and the second flow distribution cavity 242 through the first flow distribution cavity 242 and the second flow distribution cavity 242 are further communicated with each other through the flow distribution cavity 242, and the refrigerant inlet 242 is further communicated with each other through the flow distribution cavity 242 a.
Further, in this embodiment, the second flow dividing chamber 242 is further provided with a junction b, and the junction b is in communication with the switching chamber 25, so that the refrigerant converged in the second flow dividing chamber 242 can be again communicated with the switching chamber 25 through the junction b, and after the switching chamber 25 is communicated with another heat exchange tube 1, the refrigerant on the front branch is totally concentrated in the heat exchange tube 1 to flow, so that the flow rate of the refrigerant in the heat exchange tube 1 is faster, the heat exchange effect is better under the refrigeration condition, and the defrosting effect is better under the heating condition. In order to make the refrigerant flowing back in the heat exchange tube 1 flow out, the collecting pipe 2 is further provided with a converging cavity 26, the converging cavity 26 is provided with the refrigerant outlet 22, the converging cavity 26 is communicated with another transferring cavity 25, the transferring cavity 25 communicated with the converging port b is communicated with the transferring cavity 25 communicated with the converging cavity 26 through at least one heat exchange tube 1 and one communicating cavity 23, and naturally, in order to make the heat exchange stroke of the refrigerant longer, a plurality of heat exchange tubes 1 and a plurality of communicating cavities 23 can be connected in series between the converging port b and the converging cavity 26, so that the heat exchange flow path after converging is prolonged.
In a specific implementation, referring to fig. 3 and 4, the refrigerant under refrigeration condition flows into the split cavity 24 through G2, and is split through two split ports H1 and H2, and the refrigerant is formed from H1: one branch of H1- & gt T4- & gt T3- & gt T2- & gt T1- & gt T11- & gt T12- & gt T13- & gt T14- & gt H4- & gt H3, wherein the refrigerant is formed from H2: another branch of H2- & gt T8- & gt T7- & gt T6- & gt T5- & gt T15- & gt T16- & gt T17- & gt T18- & gt H5- & gt H3 is finally converged by the converging path: H3→T10→T9→T19→T20→H6→G1 form a complete heat exchange flow path.
The flow direction of the refrigerant corresponding to the heating working condition is that the refrigerant flows into the converging cavity 26 through G1, and the converging path is as follows: g1→h6→t20→t19→t9→t10→h3. The refrigerant is split through the two split ports H4 and H5, and the refrigerant is formed from H4: one branch of H4- & gtT 14- & gtT 13- & gtT 12- & gtT 11- & gtT 1- & gtT 2- & gtT 3- & gtT 4- & gtH 1- & gtG 2. The refrigerant is formed from H3: another branch from H3-H5-T18-T17-T16-T15-T5-T6-T7-T8-H2-G2.
It will be understood, of course, that if the number of heat exchange tubes is greater, the number of communication chambers corresponding to T2 and T3, and T12 and T13 may be correspondingly increased.
Further, since the flow direction of the refrigerant is reversed under the heating condition and the cooling condition, that is, the refrigerant inlet 21 under the cooling condition becomes the refrigerant outlet 22 under the heating condition, and the refrigerant outlet 22 under the cooling condition becomes the refrigerant inlet 21 under the heating condition, when the refrigerant flows reversely, the plurality of the diversion ports a on the second diversion cavity 242 distribute the refrigerant, referring to fig. 4, when the distance span between the plurality of the diversion ports a is too large, the refrigerant flows out through one diversion port a at the lower position, at intervals, when the refrigerant fills the diversion port a at the higher position, the refrigerant is distributed to the other diversion port a, at this time, the time difference of the refrigerant entering the branch paths on the plurality of parallel branches is longer, so that the refrigerant heat exchanging effect on each branch path is uneven, in order to make the refrigerant in the second bypass chamber 242 more uniformly distributed, referring to fig. 5 to 9, in another embodiment, a plurality of the bypass openings a on the second bypass chamber 242 may be disposed adjacent to each other, so that the refrigerant on each branch is prevented from being unevenly distributed, but when a plurality of the bypass openings a are disposed adjacent to each other, it is difficult to arrange the heat exchange tubes 1 on a plurality of paths by the communicating chamber 23 and the transferring chamber 25 due to the limitation of the arrangement position of the heat exchange tubes 1 on each branch, referring to fig. 8 and 9, in this embodiment, a plurality of buffer chambers 27 are further formed on the header 2, the plurality of buffer chambers 27 are disposed between the communicating chamber 23 and the second bypass chamber 242, one side of each buffer chamber 27 is disposed in communication with one transferring chamber 25, the other side communicates with the second bypass chamber 242 through one of the bypass ports a. In this way, the split-flow cooling medium can be distributed out from the switching cavity 25 at a proper position by communicating with each split-flow port a on the second split-flow cavity 242 through one side of the buffer cavity 27 and communicating with the proper corresponding switching cavity 25 on the buffer cavity 27.
Further, referring to fig. 9, in the present embodiment, a first partition 31 is further formed in the second splitting chamber 242 to divide the second splitting chamber 242 into two chambers 2421, the merging port b is disposed in one of the two chambers 2421, the plurality of splitting ports a are disposed in the other of the two chambers 2421, and a flow guiding port c communicating the two chambers 2421 is formed on the first partition 31 toward the plurality of splitting ports a, that is, when the refrigerant flows out from the merging port b, the chamber 2421 where the merging port b is located is filled first, and after the chamber 2421 is filled, the refrigerant flows out from the flow guiding port c, so that the refrigerant is conveyed to the plurality of splitting ports a at a relatively high speed, and can be equally divided.
Further, referring to fig. 9, in the present embodiment, a second partition portion 32 is further disposed in the chamber 2421 where the plurality of dividing ports a are located, two sides of the second partition portion 32 are respectively connected to two opposite side walls of the chamber 2421, two ends of the second partition portion 32 are respectively formed with a gap with an inner wall of the chamber 2421, so that a circulation flow path is formed between a peripheral side of the second partition portion 32 and the inner wall of the chamber 2421, and when the refrigerant is sprayed and delivered to the chamber 2421, a flow path circulating around a circumferential direction of the second partition portion 32 is formed in the chamber 2421, and the plurality of dividing ports a are disposed on the same side of the second partition portion 32, so that the refrigerant can be more rapidly and uniformly distributed to the plurality of dividing ports a by disposing the circulation flow path.
In a specific implementation, referring to fig. 8 to 10, the refrigerant under the refrigeration condition flows into the split cavity 24 through G2, and is split through two split ports S1 and S2, and the refrigerant is formed from S1: one branch of S1-T4-T3-T2-T1-T11-T12-T13-T14-S4-H1-H3, and the refrigerant is formed from S2: another branch of S2- & gt T8- & gt T7- & gt T6- & gt T5- & gt T15- & gt T16- & gt T17- & gt T18- & gt S5- & gt H2- & gt H3 is finally converged by the converging path: H3→S3→T10→T9→T19→T20→S6→H24→G1 form a complete heat exchange flow path.
The flow direction of the refrigerant corresponding to the heating working condition is that the refrigerant flows into the converging cavity 26 through G1, and the converging path is as follows: g1→h4→s6→t20→t19→t9→t10→s3→h3. The refrigerant is split through the two split ports H1 and H2, and the refrigerant is formed from H1: H1→S4→T14→T13→T12→T11→T1→T2→T3→T4→S1→G2. The refrigerant is formed from H2: another branch from H2-S5-T18-T17-T16-T15-T5-T6-T7-T8-S2-G2.
Because the collecting pipe 2 can be communicated with two ends of a plurality of heat exchange pipes 1, when the heat exchange pipes 1 are arranged in a U shape, a loop for realizing serial-parallel connection of the collecting pipe 2 can be adopted to replace the existing fin U-shaped heat exchange pipes 1, and when the heat exchange pipes 1 are straight pipes, the collecting pipe 2 can be arranged at two ends of the plurality of heat exchange pipes 1 so as to simplify bending each heat exchange pipe 1 into a U shape, and referring to fig. 10, in another embodiment, two collecting pipes 2 are arranged and two collecting pipes 2 are respectively arranged at two ends of the plurality of heat exchange pipes 1; the plurality of heat exchange tubes 1 comprise a plurality of heat exchange tube groups 10, each heat exchange tube group 10 comprises at least two heat exchange tubes 1, at least four first connection ports corresponding to the connection of two ends of the heat exchange tube group 10 are arranged on each communication cavity 23, so that each heat exchange tube group 10 can be communicated with two different communication cavities 23 on two collecting pipes 2, the flow directions of the heat exchange tubes 1 of each heat exchange tube group 10 are led to be arranged, the flow directions of refrigerants in each two adjacent heat exchange tube groups 10 are opposite, the plurality of heat exchange tubes 1 of each heat exchange tube group 10 are arranged in parallel, in order to realize flow division, a flow division cavity 24 is formed on each collecting pipe 2, at least two flow division ports a are arranged on each flow division cavity 24, and the two flow division ports a are communicated with the corresponding same communication cavity 23. The refrigerant is split into the same communication cavity 23 through the two splitting ports a, then one heat exchange tube group 10 communicated with the communication cavity 23 is communicated with one communication cavity 23 on the other collecting tube 2, so that parallel split branches are realized, each split cavity 24 can be respectively communicated with the corresponding refrigerant inlet 21 or the refrigerant outlet 22 through the heat exchange tube, and the refrigerant inlet 21 or the refrigerant outlet 22 can be directly arranged on the split cavity 24.
Further, in this embodiment, two headers 2 are further provided with a refrigerant inlet 21 and a refrigerant outlet 22, two headers 2 are further provided with a conducting cavity 28, and two third connectors correspondingly connected to two ends of the two heat exchange tubes 1 are disposed on the conducting cavity 28, so that the two heat exchange tubes 1 are connected in series, and in order to lengthen a heat exchange stroke between the conducting cavity 28 and the refrigerant inlet 21, a plurality of conducting cavities 28 may be further disposed to connect the two heat exchange tubes 1.
Further, a transition cavity 29 is further formed in the two collecting pipes 2, a communication port corresponding to one end of the heat exchange tube 1 is formed in the transition cavity 29, and a refrigerant inlet 21 is further formed in the transition cavity 29, so that the refrigerant inlet 21 is formed in the collecting pipe 2, and the processing and the later assembly are more convenient.
The invention also provides a household appliance, which comprises the heat exchanger 100, and the specific structure of the heat exchanger 100 refers to the embodiment, and because the household appliance adopts all the technical schemes of all the embodiments, the household appliance at least has all the beneficial effects brought by all the technical schemes of all the embodiments, and the details are not repeated here.
Specifically, the household appliance includes an air conditioner, and the heat exchanger 100 may be a condenser or an evaporator of the air conditioner to implement condensation or evaporation heat exchange of an indoor unit or an outdoor unit.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (12)
1. The utility model provides a heat exchanger, its characterized in that includes a plurality of heat exchange tubes that set up side by side, a plurality of heat exchange tubes that set up side by side pass through the communication structure and connect, so that at least part in the plurality of heat exchange tubes the heat exchange tube is parallelly connected the setting, the communication structure includes at least one pressure manifold, the pressure manifold sets up the one end of a plurality of heat exchange tubes, be formed with a plurality of intercommunication chambeies and a plurality of reposition of redundant personnel chambeies in the pressure manifold, a plurality of reposition of redundant personnel chambeies are located a plurality of intercommunication chambeies deviate from one side of a plurality of heat exchange tubes, a plurality of intercommunication chambeies set up in the pressure manifold one side that is close to a plurality of heat exchange tubes, each be provided with at least two correspond with two the first connecting port that are connected at the both ends of heat exchange tube on the intercommunication chambeies, be provided with a plurality of shunt ports on each shunt chambeies, one side that is close to a plurality of heat exchange tubes still is formed with a plurality of switching chambeies, each through one shunt port with corresponding shunt chambeies in the pressure manifold the shunt chamber so that a plurality of heat exchange tubes can be in the parallel connection heat exchange tube sets up for the heat exchange tube.
2. The heat exchanger of claim 1, wherein each of the transfer chambers is provided with a second connection port corresponding to one end of one of the heat exchange tubes.
3. The heat exchanger of claim 2, wherein the header further has a refrigerant inlet and a refrigerant outlet;
the plurality of distribution cavities comprise a first distribution cavity and a second distribution cavity, the first distribution cavity is communicated with the refrigerant inlet, and the second distribution cavity is communicated with the refrigerant outlet.
4. A heat exchanger as claimed in claim 3 wherein said second manifold chamber is further provided with a junction, said junction communicating with a said transfer chamber;
the collecting pipe is also provided with a converging cavity, the converging cavity is provided with a refrigerant outlet, the converging cavity is communicated with another switching cavity, and the switching cavity communicated with the converging opening and the switching cavity communicated with the converging cavity are communicated with one another through at least one heat exchange pipe and one communication cavity.
5. The heat exchanger of claim 4, wherein a plurality of said shunt ports on said second shunt chamber are disposed adjacent;
the collecting pipe is further provided with a plurality of buffer cavities, the buffer cavities are arranged between the communication cavities and the second shunt cavities, one side of each buffer cavity is communicated with one switching cavity, and the other side of each buffer cavity is communicated with the second shunt cavity through one shunt opening.
6. The heat exchanger of claim 5, wherein a first partition is further formed in the second flow dividing chamber to divide the second flow dividing chamber into two chambers, the junction being provided in one of the two chambers, the plurality of shunt openings being provided in the other of the two chambers;
the first separation part is provided with a diversion opening communicated with the two chambers, and the diversion opening is arranged towards the plurality of diversion openings.
7. The heat exchanger of claim 6, wherein a second partition is further provided in the chamber where the plurality of split ports are located, both sides of the second partition are respectively connected to two opposite side walls of the chamber, both ends of the second partition are respectively formed with gaps with the inner wall of the chamber, so that a circulation channel is formed between the peripheral side of the second partition and the inner wall of the chamber, and the plurality of split ports are located on the same side of the second partition.
8. The heat exchanger of claim 1, wherein two of said headers are provided, and two of said headers are provided separately at both ends of said plurality of heat exchange tubes;
the plurality of heat exchange tubes comprises a plurality of heat exchange tube groups, and each heat exchange tube group comprises at least two heat exchange tubes;
at least four first connecting ports which are correspondingly connected with two ends of the heat exchange tube groups are arranged on each communication cavity, and each heat exchange tube group is communicated with two different communication cavities on two collecting pipes;
at least two split-flow ports are arranged on each split-flow cavity, and the two split-flow ports are communicated with the corresponding same communication cavity, so that a plurality of heat exchange tubes of each heat exchange tube group are arranged in parallel.
9. The heat exchanger of claim 8, wherein the two headers are further provided with a refrigerant inlet and a refrigerant outlet;
the two collecting pipes are further provided with a conducting cavity, and two third connectors which are correspondingly connected with the two ends of the two heat exchange pipes are arranged on the conducting cavity so as to connect the two heat exchange pipes in series.
10. The heat exchanger as set forth in claim 9, wherein said two headers further have a transition chamber formed therein, said transition chamber being provided with a communication port corresponding to one end of one of said heat exchange tubes, said transition chamber further being provided with said refrigerant inlet.
11. A household appliance comprising a heat exchanger according to any one of claims 1 to 10.
12. The household appliance of claim 11, wherein the household appliance comprises an air conditioner.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111683195.0A CN114279237B (en) | 2021-12-31 | 2021-12-31 | Heat exchanger and household appliance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111683195.0A CN114279237B (en) | 2021-12-31 | 2021-12-31 | Heat exchanger and household appliance |
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| CN114279237A CN114279237A (en) | 2022-04-05 |
| CN114279237B true CN114279237B (en) | 2023-09-12 |
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| CN202111683195.0A Active CN114279237B (en) | 2021-12-31 | 2021-12-31 | Heat exchanger and household appliance |
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| CN114279237A (en) | 2022-04-05 |
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