CN210862299U

CN210862299U - Heat exchanger, refrigeration equipment and mould

Info

Publication number: CN210862299U
Application number: CN201921892748.1U
Authority: CN
Inventors: 林晨; 大森宏; 岳宝
Original assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-06-26
Anticipated expiration: 2029-11-05

Abstract

The utility model provides a heat exchanger, a refrigeration device and a mould, wherein the heat exchanger comprises at least two rows of heat exchange tubes; at least two rows of heat exchange tubes in the at least two rows of heat exchange tubes are adjacently distributed, fins are respectively arranged on the adjacent heat exchange tubes, each fin is provided with a fin body and an extending piece, the fin bodies are arranged on the heat exchange tubes, and the extending pieces extend from the fin bodies and are inclined relative to the fin bodies; the extending direction of at least part of the extending pieces of the fins on one row of the adjacent heat exchange tubes is different from the extending direction of the extending pieces of the fins on the other row of the adjacent heat exchange tubes. The heat exchanger that this scheme provided can effectively ensure the ability output of heat exchanger under the condition of reducing heat exchanger thickness by a wide margin.

Description

Heat exchanger, refrigeration equipment and mould

Technical Field

The utility model relates to a heat exchanger field particularly, relates to a heat exchanger, refrigeration plant and a mould.

Background

Be provided with the heat exchanger among refrigeration plant such as current refrigerator, wherein, the size of heat exchanger is great, leads to refrigeration plant's whole thickness size great, is unfavorable for refrigeration plant's whole quick-witted size reduction, and can lead to the inside effective volume rate of refrigeration plant to reduce.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one of the above technical problems, an object of the present invention is to provide a heat exchanger.

Another object of the utility model is to provide a refrigeration plant with above-mentioned heat exchanger.

Still another object of the utility model is to provide a mould for assembling above-mentioned heat exchanger.

To achieve the above object, an embodiment of the first aspect of the present invention provides a heat exchanger, including at least two rows of heat exchange tubes; at least two rows of the heat exchange tubes are adjacently distributed, fins are respectively arranged on the adjacent heat exchange tubes, each fin is provided with a fin body and an extending piece, the fin bodies are arranged on the heat exchange tubes, and the extending pieces extend from the fin bodies and are inclined relative to the fin bodies; in the adjacent heat exchange tubes, the extending direction of at least part of the extending pieces of the fins on one row of the heat exchange tubes is different from the extending direction of the extending pieces of the fins on the other row of the heat exchange tubes.

The above embodiment of the utility model provides a heat exchanger, fin structure on two adjacent rows of heat exchange tubes has the fin body and the extension piece for the slope of fin body, this structure can effectively ensure the ability output of heat exchanger under the condition that reduces heat exchanger thickness by a wide margin, and make the fin structure obtain reasonable extension through the extension piece of slope, the heat transfer ability of the fin of keeping away from heat exchange tube department has more been reinforceed, thereby realize in the operating efficiency of the refrigeration plant that the assurance heat exchanger is suitable for, satisfy the purpose that products such as refrigeration plant carry out attenuate design or enlarge the volume fraction, and through making the extending direction of the extension piece of the fin on one row of heat exchange tube in the adjacent heat exchange tube different with the extending direction of the extension piece of the fin on another row of heat exchange tube, more do benefit to the nimble of extension piece and arrange like this, and make the heat transfer of air current and, The uniformity is realized, the heat exchange capacity of the fins of the heat exchanger far away from the heat exchange tube is further optimized, and the heat exchange capacity of the heat exchanger is more fully exerted.

Additionally, the utility model provides a heat exchanger in the above-mentioned embodiment can also have following additional technical characterstic:

in the technical scheme, the bending angle of the extension sheet relative to the fin body is greater than 0 degree and less than or equal to 85 degrees; and/or adjacent in the heat exchange tube, one row wherein on the heat exchange tube the part of fin extend piece and another row on the heat exchange tube the part of fin extend the piece adjacent distribution, and adjacent two rows the heat exchange tube is adjacent extension opposite direction or formation contained angle between the extension piece.

It should be noted that the bending angle of the extension piece relative to the fin body can be understood as the included angle formed by the extension piece and the extension line of the fin body, and can also be understood as the included angle formed by the extension piece and the plane perpendicular to the axis of the heat exchange tube. And it can be understood that each row of heat exchange tubes can be provided with a plurality of fins, wherein, for any row of the plurality of fins of the heat exchange tubes, the bending angle values among the fins can be different or the same, but the bending angle is more than 0 degree and less than or equal to 85 degrees; for the multiple rows of heat exchange tubes, the bending angle of the fins on any row of heat exchange tubes can be different from or the same as the bending angle of the fins on the other row of heat exchange tubes, but the bending angles are more than 0 degree and less than or equal to 85 degrees.

In this scheme, make the piece of extending not more than 85 for the angle of buckling of fin body, more do benefit to like this and guarantee the linking intensity of extending piece and fin body, more do benefit to the ventilation efficiency who guarantees between the fin simultaneously, promote the heat transfer ability of heat exchanger.

The extending directions of the extending pieces between the adjacent heat exchange tubes are opposite or form included angles, for example, the extending directions of the adjacent extending pieces between the adjacent heat exchange tubes are opposite or form included angles, so that the air passing efficiency between the adjacent heat exchange tubes is higher, the air flow and the heat exchange of the fins can be more sufficient and uniform, the heat exchange capacity of the fins far away from the heat exchange tubes of the heat exchanger is further optimized, and the heat exchange capacity of the heat exchanger is more fully exerted.

In any of the above technical solutions, the extending pieces are respectively formed at two opposite ends of the fin body; the extending pieces at the two ends of the fin body extend towards the same side of the fin body in a protruding mode, and/or the extending pieces at the two ends of the fin body are arranged in parallel or arranged in a non-zero included angle mode.

In this scheme, set up the relative both ends of fin body and construct respectively and extend the piece, like this, the fin both ends obtain more rationally extending, can further reduce heat exchanger thickness under the prerequisite of guarantee heat exchanger's ability output, more do benefit to refrigeration plant's attenuate design and dilatation design. And such structure also makes heat dissipation more even in heat exchange tube both sides, further promotes the comprehensive heat transfer ability of heat exchanger.

The extension pieces at the two ends of the fin body extend towards the same side of the fin body in a protruding mode, so that the appearance of the fin is approximately concave, the structural strength is higher, the processing is more convenient, the fin can be formed by bending for one time, the production is more efficient, the structure of the die is simplified, and the product cost is greatly reduced.

The extending pieces arranged at the two ends of the fin body are arranged in parallel, and if the fin is designed to be approximately in a step shape similar to an N shape or a Z shape, the fin body has the advantages of simple structure and convenience in processing.

The extension pieces arranged at the two ends of the fin body are arranged at a non-zero included angle, if the fins are designed to be concave, the structure is simple, the processing is convenient, the structure of the die is simplified, and meanwhile, the stress symmetry of the fins in the bending forming process is better, so that the processing forming quality of the product is better, the strength uniformity and the heat exchange uniformity of the fins are also better, and the quality of the product is improved.

In any of the above technical solutions, the extending pieces are respectively formed at two ends of the fin body, and the fin body and the extending pieces at two ends form a concave shape with an opening at one end; and in the adjacent heat exchange tubes, the concave opening direction of the fins on one row of the heat exchange tubes is opposite to or the same as that of the fins on the other row of the heat exchange tubes.

In this scheme, set up fin body both ends and be formed with the extension piece respectively, and the fin body constructs one end with the extension piece at both ends and has open-ended spill, for example type U-shaped or type C shape, has mould simple structure, and product simple structure, processing are convenient, and the atress symmetry in the fin course of working is good, and the yields is high, advantages such as structural strength height.

In the adjacent heat exchange tubes, the opening direction of the concave structure fin on one row of the heat exchange tubes is opposite to that of the concave structure fin on the other row of the heat exchange tubes, so that the air flow is more fully contacted with the extension pieces, the heat exchange efficiency of the heat exchanger is improved, and the capacity output of the heat exchanger is improved.

In setting up adjacent heat exchange tube, the opening orientation of concave fin on one row of heat exchange tube wherein is the same with the opening orientation of concave fin on another row of heat exchange tube, like this, when realizing the heat exchanger attenuate and compromise heat exchanger ability output for the structure of heat exchanger is simplified more, can do benefit to the yields that promotes the heat exchanger.

In any one of the above technical solutions, a plurality of fins are arranged on each row of the adjacent heat exchange tubes; one row among them on the heat exchange tube the extension piece part of fin stretches into another row between the adjacent two of heat exchange tube the fin, or one row among them on the heat exchange tube the extension piece of fin is located another row the heat exchange tube adjacent two outside the region between the fin.

In this scheme, set up in the adjacent heat exchange tube, the extension piece part of fin on one row of heat exchange tube wherein stretches into in the region between two adjacent fins of another row of heat exchange tube, like this, can effectively ensure the ability output of heat exchanger under the condition that reduces heat exchanger thickness by a wide margin to satisfy products such as refrigeration plant better and carry out the attenuate design or enlarge the mesh of plot ratio.

In setting up adjacent heat exchange tube, the extension piece of fin on one row of heat exchange tube wherein is located the outside between two adjacent fins of another row of heat exchange tube, like this, the processing of heat exchanger is also more convenient easily, can do benefit to the production efficiency and the yields that promote the product.

In any one of the above technical solutions, a pair of close ends and a pair of far ends are formed between the fins on one row of the heat exchange tubes and the fins on the other row of the heat exchange tubes in the adjacent heat exchange tubes, and the distance between the far ends is 25 mm-30 mm; and/or the heat exchange tube comprises a coil tube, the coil tube comprises a straight tube section and a bent tube section, the bent tube section is connected with two adjacent straight tube sections, and the surface of the straight tube section is provided with the fins; and/or the heat exchanger is provided with an air inlet end and an air outlet end, wherein the distribution density of the fins at the air inlet end of the heat exchanger is smaller than that of the fins at the air outlet end; and/or the heat exchanger also comprises a pre-cooling pipe section, the pre-cooling pipe section is communicated with the heat exchange pipe and is positioned on one side of the heat exchange pipe, the heat exchanger is provided with a first end and a second end which are opposite, the pre-cooling pipe section is arranged at the first end, the heat exchange pipe and the fins are positioned between the pre-cooling pipe section and the second end, and the distribution density of the fins is increased from the pre-cooling pipe section to the second end; and/or each row of heat exchange tubes is provided with a plurality of straight tube sections which are arranged at intervals, the plurality of straight tube sections penetrate through the same fin, or the fins are respectively penetrated through the plurality of straight tube sections.

It is worth mentioning that the distance value between the mutually distant ends of the fins of the adjacent heat exchange tubes can be understood as the distance value between the fins of one row of the heat exchange tubes and the fins of the other row of the heat exchange tubes at the farthest ends in the direction perpendicular to the heat exchange tubes.

In this scheme, the distance value that sets up the end of keeping away from each other between the fin of two adjacent rows of heat exchange tubes is 25mm ~ 30mm, can guarantee heat exchanger ventilation smoothness nature to do benefit to the heat exchanger and change heat high-efficiently, can realize again with this two adjacent rows of heat exchange tubes's of heat exchanger whole thickness size control near 25mm ~ 30mm, realize that the heat exchanger size greatly thins, realized taking into account of heat exchanger size attenuate and heat exchanger ability output two aspects demand.

The heat exchange tube is arranged to comprise the coil, and the fins are arranged at the straight tube section of the coil, so that the heat exchange area of the heat exchanger is guaranteed, the ventilation smoothness between the fins is better, and meanwhile, the processing and manufacturing of the product are simpler and more convenient.

The heat exchanger is provided with an air inlet end and an air outlet end, and it can be understood that when the heat exchanger works, airflow enters the heat exchanger from the air inlet end and flows out from the air outlet end after passing through the heat exchanger, wherein the airflow is contacted with the surfaces of the fins and the heat exchange tube to exchange heat in the process of passing through the heat exchanger. The distribution density of the fins at the air inlet end of the heat exchanger is smaller than that of the fins at the air outlet end, so that the compatibility and the adaptability between the wind resistance distribution on the heat exchanger and the flowing form of the airflow are better, the airflow passing efficiency and the air quantity on the heat exchanger can be further improved, the fan energy efficiency and the heat exchanger capacity output efficiency are optimized, and the product energy conservation is realized. And the structure also ensures that the airflow flow resistance at the position of the air inlet end of the heat exchanger is smaller, so that the heat exchange capacity of the heat exchanger, particularly the heat exchange capacity under the frosting working condition, is larger, and the cold quantity requirement of refrigeration equipment can be better met.

The heat exchanger is provided with the precooling pipe section, the precooling pipe section is located at the position, far away from the second end, of the heat exchanger, and air can be precooled by the precooling pipe before air flow enters the positions of the heat exchange pipe and the fins, so that moisture in the air flow entering the positions of the heat exchange pipe and the fins can be reduced to a certain extent, the surface frosting risk of the heat exchange pipe and the fins is reduced, the position blockage of the heat exchange pipe and the fins is avoided, and the heat exchange performance of the heat exchanger is more reliable. The distribution density of the fins is increased towards the position of the second end, so that the inclusion and the adaptability between the wind resistance distribution and the airflow flowing form on the heat exchanger are better, the airflow passing efficiency and the air quantity of the surfaces of the heat exchange tube and the fins can be further improved, and the fan energy efficiency and the heat exchanger capacity output efficiency are more optimized.

In any one of the above technical solutions, the distance between the fins at the first end (i.e., the air inlet end) is 2 to 4 times the distance between the fins at the second end (i.e., the air outlet end).

In this scheme, the fin interval of the air inlet position of heat exchanger is 2 ~ 4 times of the fin interval of air-out position, thus, make the windage of heat exchanger air inlet side less, can reduce the heat exchanger danger of frosting, and promote the air inlet efficiency and the intake of heat exchanger, and can adapt to the wind loss change and the kinetic energy demand of air current along flow direction better, thereby promote the efficiency and the air-out wind speed that the air current passed the heat exchanger, can satisfy refrigeration plant's air current circulation power demand better, and make the heat exchanger flow resistance adapt to along the air volume change and the air current volume change of air current flow direction better, thereby promote the heat exchange efficiency of air current and heat exchanger, promote the output capacity of heat exchanger, further promote the efficiency of product.

In any of the above technical solutions, one portion of the fin is bent with respect to the other portion thereof to form the extending piece and the fin body that are inclined with respect to each other.

In this scheme, set up the fin body and extend the piece for the structure that constructs via the shaping technology of bending, like this, the processing of product is simple convenient, and production efficiency is high, the yields is high, and forms the integral type between fin body and the extension piece and combine, and intensity is higher, heat transfer efficiency is higher, more does benefit to promotion fin and uses reliability and radiating efficiency.

In any one of the above technical solutions, the fin is provided with one or more pipe orifices, and the heat exchange pipe is arranged in the pipe orifices in a penetrating manner.

In this scheme, set up one or more mouth of pipe on the fin and wear to establish the assembly in order to supply the heat exchange tube, have simple structure, processing, convenient assembling's advantage. In more detail, one or more nozzles are provided, for example on the fin body.

In any one of the above technical solutions, the surface of the heat exchange tube is provided with a plurality of fins distributed at intervals, transition marks are formed at the joints of the extension pieces and the fin bodies, and an airflow channel extending along the transition marks is defined between adjacent fins on the heat exchange tube.

In this scheme, the fin body forms the transition trace with the extension piece in the linking position, for example, form crease, bending structure etc. between fin body and the extension piece, make and form the airflow channel who extends along the transition trace between the adjacent fin, like this, the air current flows along the transition trace when passing the heat exchanger, and the flow resistance on the whole fin reduces furthest, and the air current can pass the heat exchanger more high-efficiently, and like this, the heat exchanger efficiency is higher, and is difficult to appear frosting and block up the scheduling problem, uses more reliably.

In any of the above technical solutions, a distance value between two points closest to the outer wall surface of the heat exchange tube and a joint between the extension piece and the fin body is greater than or equal to 2 mm.

In this scheme, the distance value that extends between the position that the distance is nearest between the outer wall of the department (like transition trace department) and the heat exchange tube of the combination of piece and fin body equals 2mm, has both taken into account the bulk strength of fin and the processing convenience of fin, makes to have abundant space air feed flow between the fin body again to make the air current can more fully, more high-efficiently carry out the heat transfer with the heat exchange tube, promote the heat transfer efficiency of heat exchanger.

An embodiment of the second aspect of the present invention provides a refrigeration apparatus, including: a housing; the heat exchanger in any one of the above technical solutions is disposed in the housing.

The utility model discloses above-mentioned embodiment provides a refrigeration plant, through being provided with among the above-mentioned arbitrary technical scheme the heat exchanger, because the heat exchanger can realize doing more thinly when satisfying its ability output, like this, the heat exchanger is littleer to the space occupation volume in the casing, both had do benefit to the percentage of capacity of expanding refrigeration plant, also did benefit to refrigeration plant complete machine attenuate design, solved the not enough problem of current refrigeration plant holding rate and be difficult to transport or be difficult to adaptation cupboard size scheduling problem because of the size is too big.

In any of the above technical solutions, the refrigeration equipment has an inner container, and the inner container is accommodated in the outer shell; the heat exchanger is arranged on the outer side of the inner container, and/or a partition is arranged in the inner container, the partition is a hollow part, and the heat exchanger is accommodated in the partition.

In this scheme, set up the heat exchanger in the outside of inner bag, wherein, because this heat exchanger can realize doing more thinly when satisfying its ability output, like this, the heat exchanger is littleer to the occupation space volume between inner bag and the shell inner wall, thereby can do benefit to the size reduction of shell, do benefit to refrigeration plant's attenuate design, and because the heat exchanger has reduced the space volume of occuping between casing and the inner bag, also can supply with the inner bag with the space of excess according to the demand, thereby realize promoting refrigeration plant's percentage of volume.

The heat exchanger is arranged inside the separator in the inner container. On the one hand, can realize doing more thinly when satisfying its ability output owing to this heat exchanger to the attenuate separator, like this, the volume ratio of inner bag is corresponding bigger, realizes the purpose of expanding the volume ratio, perhaps, under the prerequisite that satisfies certain volume ratio demand, can realize reducing the inner bag volume with the space of saving out, in order to do benefit to refrigeration plant's attenuate design. On the other hand, because the heat exchanger both sides are corresponding for two compartments that come out via the separator, like this, the heat insulating ability demand to the heat exchanger also reduces, insulation material's wall thickness also very big attenuate, overall, heat exchanger and insulation material overall thickness can be done extremely thin, place the heat exchanger in when inside the separator, make full use of the inside space of current separator promptly, also can not lead to the separator thickening intentionally, can not sacrifice refrigeration plant percentage of volume, simultaneously, also avoided the space that originally is used for holding the heat exchanger in the casing, more do benefit to refrigeration plant's attenuate design.

An embodiment of the third aspect of the present invention provides a mold for assembling a heat exchanger in any of the above technical solutions, the mold includes: the supporting and adapting device comprises a body part, wherein a tube groove and a plurality of fin grooves are formed in the body part, and the fin grooves are arranged at intervals along the extending direction of the tube groove, a supporting and adapting part is constructed on the inner wall surface of each fin groove and comprises a protruding part or a recessed part, and the supporting and adapting part is used for being matched with and abutting against the transition joint part of the fin body and the extending piece of the supporting fin.

The utility model provides an above-mentioned embodiment provides a mould, the structure supports adaptation portion on the internal face in the fin groove of mould, be used for agreeing with and leaning on the fin body that supports the fin and the transition linking position of extending the piece, can realize to the fin body and extend the good design of bending between the piece, prevent the poling, the fin body appears in the technological process such as expand tube treatment and the linking position of extending the piece warp, make the fin shape of the heat exchanger that processing obtained accurate, more do benefit to the heat exchange efficiency and the size of guaranteeing the heat exchanger, and have self simple structure, simplify the advantage of heat exchanger processing operation simultaneously.

In any of the above technical solutions, the fin slot includes a plurality of sub slots; one or more tube slots are formed on the body part, wherein the subslot is distributed on at least one of two sides of each tube slot.

In this scheme, set up the fin groove and include a plurality of subslots, can correspond a plurality of fins and assemble in a plurality of subslots back like this, through a poling realization wear to establish a plurality of fins, can save poling operation number of times to simplify the product process, promote product packaging efficiency. And the arrangement of the plurality of sub-grooves facilitates mutual positioning of the fins through the die, so that the assembly precision of the product is improved, the positioning process of the fins is greatly saved, and the improvement of the productivity of the product is facilitated.

Set up one or more subslot on the mould, can realize that same fin wears to establish the assembly structure of a plurality of first bodys, and this structure also can realize wearing to establish of independent fin and first body according to the demand to richen the structural style of the heat exchanger that the mould realized the equipment more, realized the processing form that a mould corresponds many sets of products, greatly reduced mould cost.

At least one side in the both sides that set up every tube seat is formed with the subslot, can realize fixing at least one side of fin, and the fin dislocation when avoiding the poling promotes the equipment precision of product.

In any of the above technical solutions, the supporting fitting portion includes a first face and a second face, the first face is inclined relative to the second face, the first face is used for supporting the extending piece in an abutting manner, the second face is used for supporting the fin body in an abutting manner, and the first face and the second face are in transitional engagement to define the protrusion portion or the recess portion; and/or the fin slot has opposite first and second side wall surfaces forming a space therebetween adapted for insertion of the fin, the support fitting being formed on the first side wall surface, the second side wall surface being configured as a guide surface adapted to guide the fin into the fin slot; and/or the fin slots are configured to be a clearance fit with the fins.

In this scheme, utilize first face adaptation to lean on extending piece, second face adaptation to lean on the fin body, like this, the surface of mould can agree with well with the bending structure of fin and lean on to support, avoids the poling in-process to arouse the fin deformation to promote the manufacturing accuracy and the yields of product.

The first side wall face is provided with the supporting adaptation part, the second side wall face is formed into the guide face, and therefore the fin is supported against the limiting and shaping purpose, and meanwhile the fin is more convenient to assemble in the fin groove, and therefore the assembly efficiency of products is improved.

Set up clearance fit between fin groove and the fin, like this, more make things convenient for the loading and unloading between fin and the fin groove, promote the packaging efficiency of product to can reduce the fin and fin groove loading and unloading in-process to the damage risk nature of fin, promote the yields of product.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic top view of a heat exchanger according to an embodiment of the present invention;

FIG. 2 is an enlarged, fragmentary, schematic view of a top view of the heat exchanger shown in FIG. 1;

FIG. 3 is a schematic front view of the heat exchanger shown in FIG. 1;

FIG. 4 is a schematic left side view of the heat exchanger shown in FIG. 3;

FIG. 5 is a schematic perspective view of the heat exchanger shown in FIG. 3;

fig. 6 is a schematic top view of a heat exchanger according to an embodiment of the present invention;

FIG. 7 is an enlarged, fragmentary schematic view of a top view of the heat exchanger shown in FIG. 6;

FIG. 8 is a schematic front view of the heat exchanger shown in FIG. 6;

FIG. 9 is a schematic left side view of the heat exchanger shown in FIG. 8;

FIG. 10 is a schematic perspective view of the heat exchanger shown in FIG. 8;

FIG. 11 is an enlarged schematic view of the portion C shown in FIG. 10;

fig. 12 is a schematic top view of a heat exchanger according to an embodiment of the present invention;

FIG. 13 is a front view schematic of the heat exchanger shown in FIG. 12;

FIG. 14 is a schematic left side view of the heat exchanger shown in FIG. 13;

FIG. 15 is a schematic perspective view of the heat exchanger shown in FIG. 13;

FIG. 16 is an enlarged schematic view of the D-section shown in FIG. 15;

fig. 17 is a schematic diagram of a heat exchanger assembly process according to an embodiment of the present invention;

FIG. 18 is a schematic front view of the structure shown in FIG. 17;

FIG. 19 is a bottom schematic view of the structure shown in FIG. 18;

FIG. 20 is a schematic left side view of the structure shown in FIG. 18;

fig. 21 is a schematic view of an assembly process of a heat exchanger according to an embodiment of the present invention;

FIG. 22 is a schematic front view of the structure shown in FIG. 21;

FIG. 23 is a schematic left side view of the structure shown in FIG. 22;

FIG. 24 is a bottom schematic view of the structure shown in FIG. 22;

fig. 25 is a schematic perspective view of a mold according to an embodiment of the present invention;

FIG. 26 is a front view schematic diagram of the mold shown in FIG. 25;

FIG. 27 is a left side elevational schematic view of the mold shown in FIG. 26;

fig. 28 is a schematic perspective view of a mold according to an embodiment of the present invention;

FIG. 29 is a front view schematic diagram of the mold shown in FIG. 28;

FIG. 30 is a left side elevational schematic view of the mold shown in FIG. 29;

fig. 31 is a schematic view of a part of the structure of a refrigerating apparatus according to an embodiment of the present invention;

fig. 32 is a schematic view of a part of the structure of a refrigerating apparatus according to an embodiment of the present invention;

fig. 33 is a schematic flow chart illustrating a method of manufacturing a heat exchanger according to an embodiment of the present invention;

fig. 34 is a schematic flow chart illustrating a method for manufacturing a heat exchanger according to an embodiment of the present invention;

fig. 35 is a schematic flow chart of a method for processing a heat exchanger according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 32 is:

100 heat exchanger, 101 first end, 102 second end, 110A heat exchange tube, 110B heat exchange tube, 111 straight tube section, 112 bend section, 113 precooling tube section, 114 first body, 120A fin, 120B fin, 121 fin body, 1211 mouth, 122 first extension piece, 123 second extension piece, 010 refrigeration plant, 200 shell, 300 inner bag, 400 separator, 020 mould, 021 body portion, 022 fin groove, 0221 subslot, 0222 support adaptation portion, 02221 first face, 02222 second face, 0223 first side wall face, 0224 second side wall face, 023 tube groove, 025 long slot position.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The heat exchanger 100, the refrigeration apparatus 010 and the mold 020 according to some embodiments of the present invention are described below with reference to fig. 1 to 32.

As shown in fig. 1, 6, and 12, an embodiment of the first aspect of the present invention provides a heat exchanger 100, which includes at least two rows of heat exchange tubes (specifically, the

heat exchange tubes

110A and 110B in the drawings can be understood as reference), and among the at least two rows of heat exchange tubes of the heat exchanger 100, at least two rows of heat exchange tubes are adjacently distributed.

It is to be noted that, in the case where the heat exchanger 100 includes at least two rows of heat exchange tubes, the heat exchanger 100 may be interpreted as a structure including a plurality of rows of heat exchange tubes.

For ease of understanding, the foregoing is further illustrated in conjunction with fig. 1-5 below:

as shown in fig. 1, which is a schematic top view of the heat exchanger 100 in the embodiment, the heat exchanger 100 is provided with two rows of heat exchange tubes. As shown in fig. 3, which is a schematic front view of the heat exchanger 100 in the embodiment, each row of heat exchange tubes includes a serpentine tube, the serpentine tube has a curved tube and a straight tube, the straight tube of each row of heat exchange tubes is disposed parallel to the paper surface, the straight tubes of each row of heat exchange tubes extend transversely and are arranged at intervals along the longitudinal direction, and adjacent straight tubes of each row of heat exchange tubes are connected and conducted through the curved tube. As shown in fig. 1, each row of heat exchange tubes is arranged in a direction perpendicular to the paper surface, two rows of heat exchange tubes are arranged at intervals in the longitudinal direction of the paper surface, and the two rows of heat exchange tubes are arranged with their side surfaces facing each other.

As shown in fig. 1, 6 and 12, adjacent heat exchange tubes are respectively provided with fins, each fin is configured with a fin body 121 and an extension piece, the fin body 121 is arranged on the heat exchange tube, and the extension piece extends from the fin body 121 and inclines relative to the fin body 121; the extending direction of at least part of the extending pieces of the fins on one row of the adjacent heat exchange tubes is different from the extending direction of the extending pieces of the fins on the other row of the adjacent heat exchange tubes.

The utility model discloses above-mentioned embodiment provides a heat exchanger 100, fin structure on two adjacent rows of heat exchange tubes has fin body 121 and the extension piece for the slope of fin body 121, this structure can effectively ensure heat exchanger 100's ability output under the condition that reduces heat exchanger 100 thickness by a wide margin, and make fin structure obtain reasonable extension through the extension piece of slope, the heat transfer ability of the fin of keeping away from heat exchange tube department has more been reinforceed, thereby realize in the operating efficiency of refrigeration plant 010 that guarantees heat exchanger 100 is suitable for, satisfy products such as refrigeration plant 010 and carry out the mesh of attenuate design or enlarge the volume fraction, and do benefit to the extending direction difference of the extension piece of the fin on one row of heat exchange tube in making adjacent heat exchange tubes and the extension piece of the fin on another row of heat exchange tubes, so more the nimble of extension piece is arranged, and make the air current and the heat transfer of, The uniformity is ensured, the heat exchange capacity of the fins of the heat exchanger 100 far away from the heat exchange tube is further optimized, and the heat exchange capacity of the heat exchanger 100 is fully exerted.

In certain embodiments, as shown in FIG. 1, heat exchanger 100 has heat exchange tube 110A and heat exchange tube 110B.

The heat exchange tube 110A is provided with a fin 120A, and the fin 120A has a first extension piece 122 and a second extension piece 123. The first extending piece 122 of the fin 120A extends in the x11 direction, and the second extending piece 123 of the fin 120A extends in the x12 direction.

The heat exchange tube 110B is provided with a fin 120B, and the fin 120B also has a first extension piece 122 and a second extension piece 123. The first extending piece 122 of the fin 120B extends in the x21 direction, and the second extending piece 123 of the fin 120B extends in the x22 direction.

The x11 direction and the x12 direction are different from the x21 direction and different from the x22 direction.

In certain embodiments, as shown in FIG. 6, heat exchanger 100 has heat exchange tube 110A and heat exchange tube 110B.

The heat exchange tube 110A is provided with a fin 120A, and the fin 120A has a first extension piece 122 and a second extension piece 123. The first extending piece 122 of the fin 120A extends in the x11 direction.

The heat exchange tube 110B is provided with a fin 120B, and the fin 120B also has a first extension piece 122 and a second extension piece 123. The first extending piece 122 of the fin 120B extends in the x21 direction.

Wherein the first extension piece 122 of the fin 120A is disposed adjacent to the first extension piece 122 of the fin 120B, and the x11 direction is disposed in a different direction from the x21 direction.

In some embodiments, as shown in fig. 2 and 7, the bending angle of the extension piece with respect to the fin body 121 is greater than 0 ° and equal to or less than 85 °. This is more favorable to guaranteeing the linking intensity of extension piece and fin body 121, is more favorable to guaranteeing the ventilation efficiency between the fin simultaneously, promotes heat exchanger 100's heat transfer ability.

In more detail, as shown in fig. 2 and 7, the dotted line extending from the fin body 121 of one fin 120A on the heat exchanging pipe 110A is an extension line of the fin body 121, which is an auxiliary line for facilitating understanding of the present embodiment, and is not a structure of the fin 120A. The first extending piece 122 of the fin 120A is connected with the fin body 121 of the fin 120A, and the fin body 121 of the fin 120A and the first extending piece 122 of the fin 120A form an included angle θ 1, where θ 1 can be understood as a bending angle of the first extending piece 122 of the fin 120A relative to the fin body 121 of the fin 120A, and a specific value of θ 1 is greater than 0 ° and equal to or less than 85 °.

It can be understood that, the specific representation of the bending angle between the second extending piece 123 of the fin 120A and the fin body 121 of the fin 120A can be correspondingly understood by referring to the above expression of the included angle θ 1, and the bending angle between the second extending piece 123 of the fin 120A and the fin body 121 of the fin 120A also satisfies greater than 0 ° and equal to or less than 85 °. It should be noted that the heat exchange tube 110A is provided with a plurality of fins 120A, and the specific value of θ 1 may be the same or different among the plurality of fins 120A. The bending angles between the second extending pieces 123 of the fins 120A and the fin bodies 121 of the fins 120A may be the same or different between the plurality of fins 120A.

As shown in fig. 2 and 7, the dotted line extending from the fin body 121 of one fin 120B on the heat exchanging pipe 110B is an extension line of the fin body 121, which is an auxiliary line for facilitating understanding of the present embodiment, and is not a structure of the fin 120B. The second extending piece 123 of the fin 120B is connected with the fin body 121 of the fin 120B, and the fin body 121 of the fin 120B and the first extending piece 122 of the fin 120B form an included angle θ 2, where θ 2 can be understood as a bending angle of the second extending piece 123 of the fin 120B relative to the fin body 121 of the fin 120B, and a specific value of θ 2 is greater than 0 ° and less than or equal to 85 °.

It can be understood that, the specific representation of the bending angle between the first extending piece 122 of the fin 120B and the fin body 121 of the fin 120B can be correspondingly understood with reference to the above expression of the included angle θ 2, and the bending angle between the first extending piece 122 of the fin 120B and the fin body 121 of the fin 120B also satisfies that the included angle is greater than 0 ° and less than or equal to 85 °, and it is worth to be noted that a plurality of fins 120B are provided on the heat exchange tube 110B, and the specific value of θ 2 may be the same or different among the plurality of fins 120B. The bending angles between the first extending pieces 122 of the fins 120B and the fin bodies 121 of the fins 120B may be the same or different between the plurality of fins 120B.

Note that, the four bending angles, i.e., the bending angle between the first extending piece 122 of the fin 120A and the fin body 121 of the fin 120A (i.e., θ 1), the bending angle between the second extending piece 123 of the fin 120A and the fin body 121 of the fin 120A, the bending angle between the first extending piece 122 of the fin 120B and the fin body 121 of the fin 120B, and the bending angle between the second extending piece 123 of the fin 120B and the fin body 121 of the fin 120B (i.e., θ 2), may be the same or different in numerical value, and for example, the specific value of θ 1 may be the same or different from the specific value of θ 2.

In some embodiments, as shown in fig. 2 and 7, the extending piece is bent at an angle greater than 5 ° and equal to or less than 81 ° with respect to the fin body 121.

In some embodiments, as shown in fig. 2 and 7, the extending piece is bent at an angle greater than 7 ° and equal to or less than 60 ° with respect to the fin body 121.

In some embodiments, as shown in fig. 2 and 7, the extending piece is bent at an angle greater than 15 ° and equal to or less than 45 ° with respect to the fin body 121.

In certain embodiments, as shown in fig. 2 and 7, of the adjacent heat exchange tubes, the partially extended fins of the fins of one of the rows of heat exchange tubes are distributed adjacent to the partially extended fins of the other row of heat exchange tubes.

Furthermore, the extending directions between the adjacent extending sheets of two adjacent rows of heat exchange tubes are opposite or form an included angle. Therefore, the air passing efficiency between the adjacent heat exchange tubes is higher, the heat exchange between the air flow and the fins can be more sufficient and uniform, the heat exchange capacity of the fins of the heat exchanger 100 far away from the heat exchange tubes is further optimized, and the heat exchange capacity of the heat exchanger 100 is more fully exerted.

For example, as shown in fig. 2 and 7, the heat exchanger 100 has a heat exchange tube 110A and a heat exchange tube 110B, the heat exchange tube 110A is provided with a fin 120A, the fin 120A is formed with an inclined first extending piece 122, and the fin 120B is formed with an inclined first extending piece 122, wherein the first extending piece 122 of the fin 120A and the first extending piece 122 of the fin 120B are distributed adjacently.

As a specific example, as shown in fig. 1, the first extending piece 122 of the fin 120A extends along the x11 direction, and the first extending piece 122 of the fin 120B extends along the x21 direction, wherein the x11 direction and the x21 direction are opposite directions.

In a second specific example, as shown in fig. 6, the first extending piece 122 of the fin 120A extends along the x11 direction, and the first extending piece 122 of the fin 120B extends along the x21 direction, wherein the x11 direction forms an included angle with the x21 direction.

In some embodiments, as shown in fig. 1 and 6, the opposite ends of the fin body 121 are respectively formed with extending pieces (which can be understood by referring to the first extending piece 122 and the second extending piece 123 in the drawings in particular). Therefore, the two ends of the fin are more reasonably extended, the thickness of the heat exchanger 100 can be further reduced on the premise of ensuring the capacity output of the heat exchanger 100, and the thinning design and the expansion design of the refrigeration equipment 010 are more facilitated. And such structure also makes the heat dissipation of heat exchange tube both sides more even, further promotes the comprehensive heat transfer ability of heat exchanger 100.

As shown in fig. 1 and 6, the extending pieces at the two ends of the fin body 121 are protruded toward the same side of the fin body 121. Make the fin appearance roughly be the spill, such structural strength is higher, and processing is also more convenient, for example accessible once buckles the processing shaping, produces more high-efficiently, and mould 020 structure is also more simplified to greatly reduce product cost.

In some embodiments, as shown in fig. 1 and 6, the opposite ends of the fin body 121 are respectively formed with extending pieces (specifically, refer to the first extending piece 122 and the second extending piece 123 in the drawings), wherein the extending pieces at the two ends of the fin body 121 are arranged at an included angle. If design the fin and roughly be the spill, not only simple structure, processing is convenient, and mould 020 structure simplifies, and simultaneously, the fin is also better at the atress symmetry of bending the forming process, and like this, the machine-shaping quality of product is better, and the intensity homogeneity and the heat transfer homogeneity of fin are also better to promote the quality of product.

In some embodiments, as shown in fig. 2 and 7, the two ends of the fin body 121 are respectively formed with extending pieces, and the fin body 121 and the extending pieces at the two ends form a concave shape (e.g., a U-like shape or a C-like shape) with an opening at one end. The novel fin machining mold 020 has the advantages of being simple in structure, convenient to machine, good in stress symmetry in the fin machining process, high in yield, high in structural strength and the like.

As shown in fig. 1 and 2, the concave openings of the fins of one row of the adjacent heat exchange tubes face opposite to the concave openings of the fins of the other row of the adjacent heat exchange tubes. In this way, the contact of the air flow with the extension sheet is more sufficient, thereby improving the heat exchange efficiency of the heat exchanger 100 and improving the capacity output of the heat exchanger 100.

Alternatively, as shown in fig. 6 and 7, the concave opening of the fins on one row of the adjacent heat exchange tubes has the same direction as the concave opening of the fins on the other row of the adjacent heat exchange tubes. Thus, the thinning of the heat exchanger 100 is realized, the capacity output of the heat exchanger 100 is considered, the structure of the heat exchanger 100 is simplified, and the improvement of the yield of the heat exchanger 100 can be facilitated.

Of course, the present disclosure is not limited to this, and in other embodiments, the two ends of the fin may be respectively configured with extension pieces, where the extension piece at one end protrudes from the surface of one side of the fin body 121, the extension piece at the other end protrudes from the surface of the other side of the fin body 121, and the extension pieces at the two ends may be arranged in parallel or at an included angle. Particularly, if the fins are designed to be approximately in the shape of steps similar to N shape and Z shape, the fin structure has the advantages of simple structure and convenience in processing.

In certain embodiments, as shown in fig. 2 and 7, a plurality of fins are arranged on each row of adjacent heat exchange tubes; the extending piece of the fin on one row of the heat exchange tubes is positioned outside the area between two adjacent fins of the other row of the heat exchange tubes. Thus, the heat exchanger 100 is easier and more convenient to process, and can be beneficial to improving the production efficiency and the yield of products.

In detail, as shown in fig. 2, a plurality of fins 120A are disposed on the heat exchange tube 110A, and the plurality of fins 120A are arranged at intervals along the axial direction of the heat exchange tube 110A, wherein a connecting line of the end portions of the first extending pieces 122 of the plurality of fins 120A forms a first edge line (the first edge line can be specifically understood by referring to a dot-and-dash line hA shown in fig. 2, and it is worth explaining that the dot-and-dash line hA is an auxiliary line for facilitating understanding of the present embodiment and does not limit the structure of the heat exchanger 100), and when the first extending piece 122 of the fin 120B of the heat exchange tube 110B extends to the position of the heat exchange tube 110A, the first extending piece does not exceed the dot-and-dash line hA. So that the first extension piece 122 of the fin 120B forming the heat exchange tube 110B is located outside the area between the adjacent two fins 120A of the heat exchange tube 110A, i.e., the first extension piece 122 of the fin 120B does not protrude between the adjacent two fins 120A.

It should be understood that, in the above description, it can be reversely understood that, when the first extending piece 122 of the fin 120A of the heat exchange tube 110A extends to the position of the heat exchange tube 110B, the second extending piece 122 does not exceed the second edge line formed by the connecting line of the end portions of the first extending pieces 122 of the plurality of fins 120B (the second edge line can be specifically understood by referring to the dashed-dotted line hB shown in fig. 2, and it is worth explaining that the dashed-dotted line hB is an auxiliary line for facilitating understanding of the present embodiment and does not limit the structure of the heat exchanger 100), that is, the first extending piece 122 of the fin 120A does not extend between two adjacent fins 120B.

Certainly, the scheme is not limited to this, and in other embodiments, a plurality of fins are arranged on each row of heat exchange tubes in adjacent heat exchange tubes according to requirements; the extending sheet part of the fin on one row of heat exchange tubes extends into the space between two adjacent fins of the other row of heat exchange tubes. Therefore, the capacity output of the heat exchanger 100 can be effectively ensured under the condition of greatly reducing the thickness of the heat exchanger 100, and the aim of thinning design or enlarging the volume ratio of products such as refrigeration equipment 010 and the like is better met.

In some embodiments, as shown in fig. 2 and 7, a pair of mutually close ends (which may be specifically understood as a pair of mutually close ends formed by the end of the first extending piece 122 of the fin 120A and the end of the first extending piece 122 of the fin 120B) and a pair of mutually far ends (which may be specifically understood as a pair of mutually far ends formed by the end of the second extending piece 123 of the fin 120A and the end of the second extending piece 123 of the fin 120B) are formed between the fins of one row of heat exchange tubes and the fins of the other row of heat exchange tubes in adjacent heat exchange tubes, and the distance value m between the mutually far ends is 25mm to 30 mm. The design can ensure the ventilation smoothness of the heat exchanger 100 so as to be beneficial to the heat exchanger 100 to efficiently exchange heat, and can control the overall thickness of the two adjacent rows of heat exchange tubes of the heat exchanger 100 to be about 25-30 mm, thereby realizing the great reduction of the size of the heat exchanger 100 and realizing the consideration of the requirements of the size reduction of the heat exchanger 100 and the capacity output of the heat exchanger 100.

It is to be noted that the value m of the distance between the mutually distant ends of the fins of the adjacent heat exchange tubes may be understood as the distance between the end of the second extending piece 123 of the fin 120A and the end of the second extending piece 123 of the fin 120B in the direction perpendicular to the heat exchange tubes.

In some embodiments, the distance m between the ends remote from each other is between 26mm and 29 mm.

In some embodiments, the distance m between the ends remote from each other is from 27mm to 28 mm.

In some embodiments, as shown in fig. 3, 11, 15 and 16, the heat exchange tube (which can be understood by referring to the heat exchange tube 110A and the heat exchange tube 110B in the drawings in particular) comprises a coil, the coil comprises a straight tube section 111 and a bent tube section 112, the bent tube section 112 connects two adjacent straight tube sections 111, and the surfaces of the straight tube sections 111 are provided with fins. Thus, the heat exchange area of the heat exchanger 100 is ensured, the ventilation among the fins is better, and meanwhile, the processing and manufacturing of the product are simpler and more convenient.

In some embodiments, as shown in fig. 5, 10, and 15, the heat exchanger 100 has an air inlet end (which can be understood by referring to the first end 101 of the heat exchanger 100 shown in the drawings in particular) and an air outlet end (which can be understood by referring to the second end 102 of the heat exchanger 100 shown in the drawings in particular), wherein the distribution density of the fins of the air inlet end of the heat exchanger 100 (which can be understood by referring to the

fins

120A and 120B shown in the drawings in particular) is less than that of the fins of the air outlet end.

It is understood that the distribution density of the fins can be specifically regulated and reflected by the fin pitch.

In this embodiment, when the heat exchanger 100 operates, the airflow enters the heat exchanger 100 from the air inlet end and flows out from the air outlet end after passing through the heat exchanger 100, and the flow direction of the airflow can be understood by specifically referring to the direction of the arrow W shown in fig. 5, 10, and 15. Wherein, the air current contacts with the surface of the fin and the heat exchange tube for heat exchange in the process of passing through the heat exchanger 100. The distribution density of the fins at the air inlet end of the heat exchanger 100 is smaller than that of the fins at the air outlet end, so that the inclusion and the adaptability between the wind resistance distribution on the heat exchanger 100 and the flowing form of the airflow are better, the airflow passing efficiency and the air quantity on the heat exchanger 100 can be further improved, the fan energy efficiency and the heat exchanger 100 capacity output efficiency are more optimized, and the energy conservation of products is realized. And the structure also makes the airflow flow resistance of the air inlet end position of the heat exchanger 100 smaller, so that the heat exchange capacity of the heat exchanger 100, especially the heat exchange capacity under the frosting working condition, is larger, and the cold quantity requirement of the refrigeration equipment 010 can be better met.

In certain embodiments, as shown in fig. 3, 4, 5, 8, 9, 10, 13, 14, 15, the heat exchanger 100 further comprises a precooling tube section 113, the precooling tube section 113 being in communication with the heat exchange tubes and being located on one side of the heat exchange tubes, the heat exchanger 100 having opposite first and second ends 101, 102, the precooling tube section 113 being disposed at the first end 101, the heat exchange tubes and fins being located between the precooling tube section 113 and the second end 102, and the distribution density of the fins increasing in a direction from the precooling tube section 113 to the second end 102. The heat exchanger 100 is provided with the precooling pipe section 113, so that the precooling pipe section 113 is positioned at the position of the heat exchanger 100 far away from the second end 102, and air can be precooled before air flow enters the positions of the heat exchange pipes and the fins by utilizing the precooling pipe, thus moisture in the air flow entering the positions of the heat exchange pipes and the fins can be reduced to a certain extent, the surface frosting risk of the heat exchange pipes and the fins is reduced, the blockage of the positions of the heat exchange pipes and the fins is avoided, and the heat exchange performance of the heat exchanger 100. The distribution density of the fins is increased towards the position of the second end 102, so that the inclusion and the adaptability between the wind resistance distribution and the airflow flowing form on the heat exchanger 100 are better, the airflow passing efficiency and the airflow quantity on the surfaces of the heat exchange tube and the fins can be further improved, and the fan energy efficiency and the output efficiency of the heat exchanger 100 are more optimized.

In some embodiments, the spacing between the fins at the first end 101 (i.e., the inlet end) is 2-4 times the spacing between the fins at the second end 102 (i.e., the outlet end). Like this, make the windage of heat exchanger 100 air inlet side less, can reduce heat exchanger 100 risk of frosting, and promote the air inlet efficiency and the intake of heat exchanger 100, and can adapt to the wind-force loss change and the kinetic energy demand of air current along the flow direction better, thereby promote the efficiency and the air-out wind speed that the air current passed heat exchanger 100, can satisfy refrigeration plant 010's air current circulation power demand better, and make heat exchanger 100 flow resistance adapt to along the air volume change and the air current volume change of air current flow direction better, thereby promote the heat exchange efficiency of air current and heat exchanger 100, promote the output capacity of heat exchanger 100, further promote the efficiency of product.

In certain embodiments, as shown in fig. 3, 4 and 5, each row of heat exchange tubes has a plurality of straight tube sections 111 arranged at intervals, and the plurality of straight tube sections 111 are arranged on the same fin. The integral fins are matched with the straight pipe sections 111 in a penetrating mode, the number of parts is less, the structure is simpler, the fins are more convenient to position, and the assembly efficiency and the assembly precision of products can be improved.

In certain embodiments, as shown in fig. 8, 9 and 10, and fig. 13, 14 and 15, each row of heat exchange tubes has a plurality of straight tube sections 111 arranged at intervals, and a plurality of straight tube sections 111 are respectively penetrated with fins. The independent fins are independently connected with the straight tube sections 111 in a penetrating manner, so that the arrangement form of the fins is more flexible, the position allocation of the fins is more convenient, the fins on the heat exchanger 100 can be individually designed, and the capacity optimization of the heat exchanger 100 is realized.

In certain embodiments, as shown in fig. 1 and 2, the fins are a unitary structure. Further, a portion of the fin is bent with respect to another portion thereof to form a relatively inclined extension piece (as can be understood with particular reference to the first extension piece 122 and/or the second extension piece 123 shown in the drawings) and the fin body 121. Also, fin body 121 and extension piece are the structure that constructs for via the forming process that bends, and like this, the processing of product is simple convenient, and production efficiency is high, the yields is high, and forms the integral type between fin body 121 and the extension piece and combine, and intensity is higher, heat transfer efficiency is higher, more does benefit to promotion fin and uses reliability and radiating efficiency.

Of course, the present disclosure is not limited to this, and in other embodiments, the extending piece and the fin body 121 may be provided as separate components and connected together by welding, assembling connection (e.g., clamping, screwing, riveting), or the like.

In some embodiments, as shown in fig. 17, the fins are provided with a plurality of nozzles 1211, and the heat exchange tubes are arranged in the nozzles 1211. Has the advantages of simple structure and convenient processing and assembly. In more detail, for example, the fin body 121 is provided with a plurality of nozzles 1211.

In some embodiments, as shown in fig. 22, the fin has a nozzle 1211, and the heat exchange tube is inserted into the nozzle 1211. Has the advantages of simple structure and convenient processing and assembly. In more detail, for example, a nozzle 1211 is provided on the fin body 121.

In some embodiments, the surface of the heat exchange tube is provided with a plurality of fins distributed at intervals, transition marks are formed at the joints of the extension pieces and the fin body 121, and an airflow channel extending along the transition marks is defined between adjacent fins on the heat exchange tube. As shown in fig. 5, 10 and 15, the fins 120A adjacent to each other form a bottom-to-top air flow passage therebetween. And/or adjacent fins 120B form bottom-to-top airflow channels therebetween.

Wherein, form the transition trace through fin body 121 and extension piece in the position of linking up, for example, form crease, bending structure etc. between fin body 121 and the extension piece, make and form the air current passageway that extends along the transition trace between the adjacent fin, like this, the air current flows along the transition trace when passing heat exchanger 100, and the flow resistance on the whole fin reduces to the greatest extent, and the air current can pass heat exchanger 100 more high-efficiently, and like this, heat exchanger 100 energy efficiency is higher, and difficult frosting jam scheduling problem appears, uses more reliably.

In some embodiments, as shown in fig. 2 and 7, the distance value n between the joint of the extension piece (specifically, the second extension piece 123 on the fin 120B shown in the drawings) and the fin body 121 (for example, at the transition mark) and two points closest to the outer wall surface of the heat exchange tube is greater than or equal to 2 mm. This structure has both taken into account the bulk strength of fin and the processing convenience of fin, makes again to have abundant space between the fin body 121 to supply the air current to flow to make the air current can more fully, more high-efficiently carry out the heat transfer with the heat exchange tube, promote heat exchanger 100's heat transfer efficiency.

Specific example 1:

as shown in fig. 1 to 5, the present embodiment provides a heat exchanger 100, which includes two rows of heat exchange tubes distributed adjacently, specifically, a heat exchange tube 110A and a heat exchange tube 110B distributed adjacently. The heat exchange tube 110A is provided with a plurality of fins 120A to form one row of finned tubes, and the heat exchange tube 110B is provided with a plurality of fins 120B to form the other row of finned tubes.

The wind of the finned tube enters along the lower part of the heat exchanger 100 and flows out from the upper part, the fins 120A/the fins 120B of the heat exchanger 100 are relatively sparse in the inlet area at the lower part and relatively dense at the upper part, and the spacing between the fins at the lower part (such as the direct spacing between the fins 120A and/or the spacing between the fins 120B) is 2-4 times that between the fins at the upper part.

In the heat exchange tube 110A and the heat exchange tube 110B, the fins on each row of tubes are U-shaped folded pieces, and the U-shaped folded pieces of the two rows of tubes are arranged in the opposite direction, as shown in fig. 2.

The bending angles of the fins on both sides, namely the included angles theta (namely theta 1 and theta 2) between the plane tangent lines of the folding pieces (namely the first extending pieces 122 and the second extending pieces 123) and the flat sheets (namely the fin bodies 121) vertical to the tubes are 0-85 degrees, and the bending angles of the fins on each row of tubes can be different, but all the bending angles accord with the range. Similarly, the fin angles of the two rows of tubes reverse bent may not be the same, but are within the same range.

When θ (i.e., θ 1 and θ 2) is 0 ° to 5 °, neither of the fin tip planes of the intermediate portions of the two rows of tubes crosses the edge line, for example, when the first extension piece 122 of the fin 120B of the heat exchange tube 110B extends toward the position of the heat exchange tube 110A, the first extension piece 122 of the fin 120B of the heat exchange tube 110B does not exceed the chain line hA shown in fig. 2, and/or when the first extension piece 122 of the fin 120A of the heat exchange tube 110A extends toward the position of the heat exchange tube 110B, the first extension piece 122 does not exceed the chain line hB shown in fig. 2.

When θ (i.e., θ 1 and θ 2) is 5 ° to 85 °, the fin tip plane may cross the edge line, as the first extension piece 122 of the fin 120B of the heat exchange tube 110B extends toward the position of the heat exchange tube 110A, the first extension piece 122 of the fin 120B of the heat exchange tube 110B may exceed the chain-dashed line hA shown in fig. 2, and/or the first extension piece 122 of the fin 120A of the heat exchange tube 110A may exceed the chain-dashed line hB shown in fig. 2, as it extends toward the position of the heat exchange tube 110B. I.e., the flap (first extension tab 122) length may extend to the flap area of the other row of tubes to enlarge the fin footprint.

The bending of the fin can be straight bending or certain cambered surface bending. The minimum distance n between the bending point and the outer wall of the heat exchange tube is more than or equal to 2 mm.

The overall thickness of the double-row finned tube is 20-35 mm, for example, the vertical distance between the end part of the first extending sheet 122 and the end part of the second extending sheet 123 in FIG. 2.

The lowest pipeline of the heat exchanger 100 can be set as a precooling pipe according to the actual use in a form of not adding fins, the precooling pipe is mainly used for removing moisture in wind and avoiding blockage of an upper finned tube area, the precooling pipe is an optional addition item of the heat exchanger 100, and in other embodiments, the heat exchanger 100 can also be in a form of not arranging the precooling pipe.

The heat exchange tubes (i.e., the heat exchange tube 110A and the heat exchange tube 110B) can be circular tubes with an outer diameter of 3 mm-8 mm. Certainly, in other embodiments, the heat exchange tubes (i.e., the heat exchange tube 110A and the heat exchange tube 110B) may also be elliptical tubes having a length-to-diameter ratio of 1.2-3 and a short outer diameter of 2-6 mm, and the elliptical tubes may more effectively reduce the resistance on the windward side.

As shown in fig. 3, 4 and 5, the

fins

120A and 120B are whole long fins, the heat exchange tube 110A and the heat exchange tube 110B are respectively serpentine tubes, a plurality of straight tube sections 111 of the heat exchange tube 110A are inserted into the same integral fin 120A, and a plurality of straight tube sections 111 of the heat exchange tube 110B are inserted into the same integral fin 120B.

Specific example 2:

as shown in fig. 6 to 11, the differences from the above embodiment 1 include: in this embodiment, the U-shaped flaps (i.e., the fins 120A and the fins 120B) are not joined as a whole long sheet, but are in the form of a single sheet on each straight tube section 111, as shown in fig. 8, 9, 10 and 11, and the fins on each straight tube section 111 are independent U-shaped flaps in the up-down direction.

Wherein, along the up-down direction, the fins 120A on the adjacent straight tube sections 111 of the heat exchange tube 110A are arranged in an in-line manner, that is, the U-shaped flap openings of the fins 120A between the fins 120A of the adjacent straight tube sections 111 of the heat exchange tube 110A face substantially the same side.

The fins 120B of the adjacent straight tube section 111 of the heat exchange tube 110B are also arranged in an in-line manner in the up-down direction, i.e., the U-shaped flap openings of the fins 120B face generally the same side between the fins 120B of the adjacent straight tube section 111 of the heat exchange tube 110B.

In addition, the differences also include: as shown in fig. 6 and 7, in this embodiment, the

fins

120A and 120B are in an in-line form, that is, the U-shaped flap openings of the

fins

120A and 120B face generally the same side.

The distribution density, fin parameters, and the like of the fins 120A and the fins 120B in this embodiment can be substantially as described in embodiment 1, and are not repeated here.

Specific example 3:

as shown in fig. 12 to 16, the differences from the above embodiment 2 include: in this embodiment, the fins 120A of the adjacent straight tube sections 111 of the heat exchange tube 110A are arranged in a reverse arrangement in the up-down direction, that is, the adjacent straight tube sections 111 of the heat exchange tube 110A have the U-shaped flap openings of the fins 120A of one of the straight tube sections 111 facing one axial side of the straight tube section 111, and the U-shaped flap openings of the fins 120A of the other straight tube section 111 facing the other axial side of the straight tube section 111.

In addition, the fins 120B of the adjacent straight tube sections 111 of the heat exchange tube 110B are arranged in a reverse arrangement in the up-down direction, that is, the adjacent straight tube sections 111 of the heat exchange tube 110B have the U-shaped flap openings of the fins 120B of one of the straight tube sections 111 facing one axial side of the straight tube section 111, and the U-shaped flap openings of the fins 120B of the other straight tube section 111 facing the other axial side of the straight tube section 111.

As shown in fig. 31 and 32, an embodiment of the second aspect of the present invention provides a refrigeration apparatus 010, including: a housing 200 and the heat exchanger 100 described in any of the above embodiments, the heat exchanger 100 being disposed within the housing 200.

The utility model discloses above-mentioned embodiment provides a refrigeration plant 010, through being provided with among the above-mentioned arbitrary technical scheme heat exchanger 100, can realize doing more thinly when heat exchanger 100 satisfies its ability output, like this, heat exchanger 100 is littleer to the occupation space volume in the casing, both do benefit to the volume fraction of expanding refrigeration plant 010, also do benefit to refrigeration plant 010 complete machine attenuate design, solve the not enough problem of current refrigeration plant 010 holding rate and be difficult to transport or be difficult to adaptation cupboard size scheduling problem because of the size is too big.

For example, the refrigeration device 010 can be a refrigerator, a wine cabinet, a refrigerator (specifically, an air-cooled refrigerator), and the like.

For example, in the related art, the refrigeration device 010 is an air-cooled refrigerator and is provided with an evaporator (i.e., a heat exchanger 100), the evaporator is disposed on the back of the refrigerator, the thickness of the evaporator is about 60mm, the evaporator is the lowest temperature component in the whole refrigerator, the evaporator is disposed on the back of the refrigerator, the back of the refrigerator needs to be very strictly insulated, and a thicker PU foam material or even a VIP material is generally used. Therefore, the whole thickness of the refrigerator is difficult to be less than 600mm, the refrigerator is difficult to be embedded to match with the size of a home decoration cabinet and the like, and meanwhile, the evaporator occupies part of the effective volume of the refrigerator, so that the volume rate of the refrigerator is reduced. In the common case, the thickness of the evaporator is about 60mm, and the thickness of the portion of the evaporator which is placed on the back of the refrigerator and subjected to tight heat preservation is hardly smaller than 100mm, so that the overall thickness of the high-capacity refrigerator is hardly smaller than 640 mm.

In view of the current state of the related art, if a simple method for reducing the thickness of the evaporator in the refrigerator is adopted, the following two problems will be caused:

1. the air side flow resistance of the heat exchanger 100 is large, so that the circulating air quantity in the refrigerator is difficult to meet the requirement or the power of a fan is large;

2. the heat exchange capacity of the heat exchanger 100, especially under the frosting condition, is small, which is not enough to meet the normal cold requirement of the refrigerator.

Aiming at the problem that the evaporator of the air-cooled refrigerator is thick and affects the volume ratio and the embedding type, the refrigeration equipment 010 provided by the embodiment has the advantages that through the heat exchanger 100 in any one of the embodiments, the heat exchanger 100 adopts a structural form of double rows of inclined extension pieces, the extension directions of the extension pieces among the rows are controlled to be different, the same capacity output as that of the original heat exchanger 100 is kept under the condition that the thickness of the heat exchanger 100 is greatly reduced, and the heat exchange capacity of fins far away from a pipe is strengthened through reasonable extension of the fins along a certain direction.

In some embodiments, insulation material, such as PU (Polyurethane), VIP panels, etc., may be disposed around the heat exchanger 100.

In some embodiments, as shown in fig. 31, the refrigeration device 010 has an inner container 300, the inner container 300 being housed inside the casing 200; wherein, the heat exchanger 100 is provided outside the inner container 300. Wherein, can realize doing more thinly when satisfying its ability output owing to this heat exchanger 100, like this, heat exchanger 100 is littleer to the occupation space volume between inner bag 300 and the shell 200 inner wall, thereby can do benefit to the size reduction of shell 200, do benefit to refrigeration plant 010's attenuate design, and because heat exchanger 100 has reduced the space between casing and inner bag 300 and has occupied the volume, also can supply inner bag 300 with the space of excess according to the demand, thereby realize promoting refrigeration plant 010's percentage of volume.

In some embodiments, as shown in fig. 32, the refrigeration device 010 has an inner container 300, the inner container 300 being housed inside the casing 200; a partition 400 is provided in the inner container 300, the partition 400 is a hollow member, and the heat exchanger 100 is accommodated in the partition 400. On the one hand, because this heat exchanger 100 can realize making thinner when satisfying its ability output to attenuate separator 400, like this, the volume ratio of inner bag 300 is corresponding bigger, realizes the purpose of expanding the volume ratio, perhaps, under the prerequisite that satisfies certain volume ratio demand, can realize reducing inner bag 300 volume with the space of saving, in order to do benefit to the attenuate design of refrigeration plant 010. On the other hand, since two chambers are respectively formed on both sides of the heat exchanger 100 and are separated by the partition 400, the heat retaining property of the heat exchanger 100 is also reduced, and the wall thickness of the heat retaining material is also greatly reduced. Generally, this scheme can reduce in heat exchanger 100 thickness to 20 ~ 35mm when guaranteeing heat exchanger 100 energy efficiency, really can realize in the middle separator 400 of heat exchanger 100 embedding refrigerator and separator 400 thickness does not change almost, can not sacrifice refrigeration plant 010 volume rate, simultaneously, has also avoided the space that is used for holding heat exchanger 100 originally in the casing, more does benefit to the attenuate design of refrigeration plant 010.

As shown in fig. 25 to 30, an embodiment of the third aspect of the present invention provides a mold 020 for assembling the heat exchanger 100 described in any of the above embodiments, wherein the mold 020 comprises a body part 021.

Specifically, as shown in fig. 25 and 28, the main body part 021 is formed with a tube groove 023 and a plurality of fin grooves 022, and the plurality of fin grooves 022 are arranged at intervals along an extending direction of the tube groove 023 (the extending direction of the tube groove 023 may be understood with reference to an extending direction of a tube body understood to be pierced in the tube groove 023, such as a straight tube portion of the first tube body, or the extending direction of the tube groove 023 may be understood with reference to a y2 direction shown in fig. 25).

As shown in fig. 25, 27 and 28, a supporting fitting portion 0222 is configured on an inner wall surface of the fin slot 022, the supporting fitting portion 0222 includes a convex portion or a concave portion, and the supporting fitting portion 0222 is used for engaging and abutting against a transition joint portion of the fin body 121 and the extension piece of the supporting fin.

The utility model discloses above-mentioned embodiment provides a mould 020, construct support adaptation portion 0222 on the internal face of fin groove 022 of mould 020, be used for agreeing with and leaning on the transition linking position of the fin body 121 that supports the fin and extension piece, can realize the good design of bending the molding between fin body 121 and the extension piece, prevent the poling, fin body 121 appears in the technological process such as expand tube processing and the linking position of extension piece warp, make the fin shape of the heat exchanger 100 that processing obtained accurate, more do benefit to the heat exchange efficiency and the size of guaranteeing heat exchanger 100, and have self simple structure, simplify the advantage of the processing operation of heat exchanger 100 simultaneously.

In certain embodiments, as shown in fig. 25 and 26, fin slot 022 includes a plurality of sub-slots 0221; the body part 021 is formed with a plurality of pipe slots 023, wherein a sub slot 0221 is distributed at least at one of both sides of each pipe slot 023.

Further, as shown in fig. 25, along the arrangement direction of the plurality of tube grooves 023 (the arrangement direction of the plurality of tube grooves 023 can be specifically understood by referring to the direction y1 shown in fig. 25), the sub grooves 0221 are communicated with each other and form the long groove 025, and the long groove 025 can accommodate the elongated fin with the plurality of tube orifices 1211, so that the elongated fin with the plurality of tube orifices 1211 can be adapted to be assembled with the plurality of straight tube sections 111.

In this embodiment, set up fin groove 022 and include a plurality of subslot 0221, can correspond a plurality of fins like this and assemble back in a plurality of subslots 0221, wear to establish a plurality of fins through a poling realization, can save poling operation number of times to simplify the product process, promote product packaging efficiency. And the arrangement of the plurality of sub-grooves 0221 facilitates mutual positioning of the fins through the die 020, so that the assembly precision of the product is improved, the positioning process of the fins is greatly saved, and the yield of the product is improved. The design of a plurality of tube slots 023 can realize that same fin wears to establish the assembly with many straight tube sections 111, also can realize wearing to establish of independent fin and first body 114 according to the demand to richen the structural style of heat exchanger 100 that mould 020 realized the equipment more, realized the processing form that a mould 020 corresponds many sets of products, greatly reduced mould 020 cost. At least one side in the both sides that set up every tube slot 023 is formed with subslot 0221, can realize fixing at least one side of fin, and the fin dislocation when avoiding the poling promotes the equipment precision of product.

In certain embodiments, as shown in fig. 28, fin slot 022 comprises a plurality of sub-slots 0221; as shown in fig. 28 and 29, the body part 021 is formed with a tube groove 023 in which a sub groove 0221 is distributed at least one of both sides of each tube groove 023. This structure realizes locating between the fin, and the design of single tube groove 023 is more suitable for the fin and the assembly of mould 020 of single straight tube section 111 of adaptation. At least one side in the both sides that set up every tube slot 023 is formed with subslot 0221, can realize fixing at least one side of fin, and the fin dislocation when avoiding the poling promotes the equipment precision of product.

In certain embodiments, as shown in fig. 25, 27 and 28, the support adapter 0222 includes a first face 02221 and a second face 02222, the first face 02221 being inclined relative to the second face 02222, the first face 02221 being configured to abut the support extension sheet, the second face 02222 being configured to abut the support fin body 121, the first face 02221 transitionally engaging the second face 02222 to define a protrusion or a depression. Lean on to lean on the fin body 121 through utilizing first face 02221 adaptation to lean on the extension piece, second face 02222 adaptation, like this, the surface of mould 020 can agree with well with the bending structure of fin and lean on the support by leaning on, avoids the poling in-process to arouse the fin deformation to promote the manufacturing accuracy and the yields of product.

In some embodiments, as shown in fig. 25, 27 and 28, the fin slot 022 has first and second opposing

side walls

0223 and 0224 forming a space therebetween adapted to insert fins, the support adapter 0222 is formed on the first side wall 0223, and the second side wall 0224 is configured as a guide surface adapted to guide fins into the fin slot 022. Like this, when satisfying to the fin and leaning on spacing and design's purpose, more make things convenient for the fin to pack into the assembly operation in fin groove 022 to the realization promotes the packaging efficiency of product.

In certain embodiments, the fin grooves 022 are configured to be a clearance fit with the fins. Like this, make things convenient for the loading and unloading between fin and the fin groove 022 more, promote the packaging efficiency of product to can reduce the fin and the fin groove 022 loading and unloading in-process to the damage risk nature of fin, promote the yields of product.

As shown in fig. 33, an embodiment of the fourth aspect of the present invention provides a method for processing a heat exchanger, which is used for the heat exchanger 100 described in any of the above embodiments, and the method for processing a heat exchanger includes the following steps:

step S3302, the fins are assembled in the fin grooves of the die;

step S3304, enabling a first pipe body to penetrate through the pipe groove of the die and the pipe orifice of the fin, and enabling the first pipe body to extend along the pipe groove and penetrate through the pipe orifice of the fin;

and step S3306, performing tube expansion processing on the first tube body.

The utility model discloses above-mentioned embodiment provides a processing method of heat exchanger, with the fin assembly in the mould (the structure of the mould in this embodiment can specifically refer to the utility model discloses the mould that provides in any embodiment of fourth aspect understands) the fin inslot carry out poling and expand tube and handle, when guaranteeing first body and fin combination reliability, can effectively protect the fin molding, like this, the fin shape of the heat exchanger that processing obtained is accurate, more does benefit to the heat exchange efficiency and the size of guaranteeing the heat exchanger, and has simple process operation, convenient advantage.

As shown in fig. 34, in some embodiments, the heat exchanger manufacturing method includes the following steps:

step S3402, assembling the fins in fin grooves of the die;

step 3404, passing a first pipe body (which may be a U-shaped pipe or a straight pipe) through the pipe groove of the mold and the pipe orifice of the fin, so that the first pipe body extends along the pipe groove and is arranged in the pipe orifice of the fin in a penetrating manner;

step S3406, performing tube expansion treatment on the first tube body;

step 3408, taking out the first pipe and the fins attached to the surface of the first pipe from the mold;

in step S3410, the removed first tube is connected (e.g., welded, etc.) to a second tube, such that the second tube is joined to the plurality of first tubes to form a heat exchange tube. Wherein at least part of the first pipe body is a straight pipe, and/or the second pipe body comprises one or more of an elbow pipe and a tee pipe.

It will be appreciated that the structure of the mould in this embodiment may be understood with particular reference to the mould provided in any embodiment of the fourth aspect of the invention.

In this scheme, accomplish the expand tube with first body and handle and take out after connecting the fin, utilize the second body to link up a plurality of first bodys that are equipped with the fin and make the heat exchanger, such structure is little to the damage of fin, and has convenient, the efficient advantage of processing, also is convenient for implement with the assembly line form, makes things convenient for the mass production of product.

In the above embodiment, before the step of connecting the first pipe body taken out with the second pipe body, the method for processing a heat exchanger further includes: and expanding the opening of the first pipe body. Therefore, the first pipe body and the second pipe body are connected and welded conveniently, the connection quality of the first pipe body and the second pipe body is improved, and the yield of products is improved.

More specifically, as shown in fig. 17, 18, 19 and 20, the heat exchanger 100 of the present embodiment can be processed in a manner suitable for single-row fin tube processing, and the fin grooves 022 of the die 020 are formed in a shape capable of receiving folded fins (for example, fins including the fin body 121 and the first and/or second extending pieces 122 and 123).

The processing form suitable for the fin in the form of a long piece will be described as an example. As shown in fig. 17 and 25, the mold 020 has a plurality of subslots 0221 along the extending direction of the tube slots 023 to accommodate a plurality of fins, respectively. It should be noted that the pipe groove 023 is a structure on the mold 020 for the pipe to pass through, for example, the pipe groove 023 is a structure on the mold 020 for the first pipe to pass through. From this, it can be understood that the extending direction of the pipe groove 023 is substantially identical to the extending direction of the pipe body (for example, the straight pipe portion of the first pipe body) for penetrating into the pipe groove 023, and when the extending direction of the pipe groove 023 is understood, it can be understood by specifically referring to the extending direction of the pipe body penetrating into the pipe groove 023, for example, the extending direction of the pipe groove 023 is understood by referring to the extending direction of the straight pipe portion of the first pipe body.

In addition, a plurality of pipe grooves 023 are arranged on the die 020, and as shown in fig. 25, sub grooves 0221 are respectively distributed on both sides of each pipe groove 023. Along the arrangement direction of the plurality of pipe grooves 023 (the arrangement direction of the plurality of pipe grooves 023 can be specifically understood by referring to the y1 direction shown in fig. 25), the plurality of sub grooves 0221 are communicated to form a long groove 025, wherein along the extension direction of the pipe grooves 023 (the extension direction of the pipe grooves 023 can be specifically understood by referring to the y2 direction shown in fig. 25), the spacing length between the sub grooves 0221 can be set to be alternately wide and narrow according to the top-close and bottom-open style of the refrigerator evaporator, the wide spacing range is 10 mm-30 mm, and the narrow spacing range is 5 mm-10 mm. The long groove positions 025, which are reflected on the mold 020, are alternately long and short. The U-shaped fin die 020 is provided with inclined grooves matched with the U-shaped folded fins, as shown in fig. 20, the fins are loaded into the die 020 along the z1 direction, the fins are arranged through the die 020, the U-shaped tubes are inserted through tube orifices 1211 of the fins and tube grooves 023 of the die 020 along the z2 direction, and after all the U-shaped tubes are inserted, the tube expanding die 020 is inserted for tube expansion from the opening direction of the U-shaped tubes. After the tube expansion is finished, the formed finned tube (including the heat exchange tube and the structure of the fins on the heat exchange tube) is taken out of the die 020. Therefore, certain gaps need to be reserved between the tube grooves 023 and the fin grooves 022 of the die 020 to ensure that the finned tube after tube expansion can be smoothly taken out. And expanding the opening of the finned tube after being taken out, and welding a semicircular tube or a three-way tube, wherein the layout of the specific flow path is determined. The prepared rows of finned tubes are arranged adjacently to obtain the heat exchanger 100.

As shown in fig. 35, in some embodiments, the heat exchanger processing method includes the following steps:

step S3502, assembling the fins in the fin grooves of the mold;

step S3504, enabling the first pipe body to penetrate through pipe openings of the plurality of fins and pipe grooves of the plurality of dies, and enabling the first pipe body to extend along the pipe grooves and penetrate through the pipe openings of the fins;

step S3506, performing tube expansion processing on the first tube body;

step S3508, bending a portion of the first pipe located between the adjacent molds.

In this scheme, wear to establish the fin in-process to first body, reserve the position that does not wear to establish the fin on the first body, treat to wear to establish and to reserve the position after accomplishing and bend and handle and obtain the heat exchanger, such structure can realize that the heat exchange tube is integrative to be set up, and has convenient processing, efficient advantage, also is convenient for implement with the assembly line form, makes things convenient for the mass production of product.

More specifically, as shown in fig. 21, 22, 23 and 24, the heat exchanger 100 of the present embodiment is processed in a manner different from the manner in which the finned tube is taken out and then the tee or elbow is welded. In this embodiment, the fin grooves 022 of the mold 020 are configured to be able to receive folded fins (e.g., fins that include the fin body 121 and the first extending piece 122 and/or the second extending piece 123). More specifically, as shown in fig. 21 and 23, the mold 020 has a plurality of subslots 0221 in the tube groove 023 direction to accommodate a plurality of fins, respectively. Along the extending direction of the pipe groove 023, the interval length between the sub grooves 0221 can be set to be wide and narrow in an alternating manner according to the upper-close and lower-loose pattern of the refrigerator evaporator, the wide interval range is 10 mm-30 mm, and the narrow interval range is 5 mm-10 mm.

Wherein, the molds 020 can be arranged in a plurality of different groups along the way in the auxetic direction (specifically, see the t direction shown in fig. 21) at wide and narrow intervals, and the middle spacing area of each group of molds 020 is reserved as the bending area of the first tube 114 of the heat exchanger 100. As shown in fig. 23, the fins are loaded into the mold 020 in the z1 direction, and when the fins are fully seated in the fin grooves 022, the first tube body 114 of the heat exchanger 100 is inserted through the aligned sets of tube grooves 023 of the mold 020 in the z2 direction. The tube orifices 1211 of the fins are used for enabling the single first tube body 114 to penetrate through the middle holes of the fins, and after the tubes are integrally expanded, the tubes are bent at the middle parts of different groups of dies 020, so that the single-row finned tube of the heat exchanger 100 is manufactured. The prepared rows of finned tubes are arranged adjacently to obtain the heat exchanger 100.

In the present application, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means 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 do not necessarily 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.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat exchanger is characterized by comprising at least two rows of heat exchange tubes;

at least two rows of the heat exchange tubes are adjacently distributed, fins are respectively arranged on the adjacent heat exchange tubes, each fin is provided with a fin body and an extending piece, the fin bodies are arranged on the heat exchange tubes, and the extending pieces extend from the fin bodies and are inclined relative to the fin bodies;

in the adjacent heat exchange tubes, the extending direction of at least part of the extending pieces of the fins on one row of the heat exchange tubes is different from the extending direction of the extending pieces of the fins on the other row of the heat exchange tubes.

2. The heat exchanger of claim 1,

the bending angle of the extension piece relative to the fin body is greater than 0 degree and less than or equal to 85 degrees; and/or

Adjacent in the heat exchange tube, one row wherein on the heat exchange tube the part of fin extend piece and another row on the heat exchange tube the part of fin extend the piece adjacent distribution, and adjacent two rows the heat exchange tube is adjacent extension opposite direction or formation contained angle between the extension piece.

3. The heat exchanger according to claim 1 or 2,

the extending pieces are respectively formed at the two opposite ends of the fin body; wherein the content of the first and second substances,

the extending pieces at the two ends of the fin body are convexly arranged towards the same side of the fin body, and/or the extending pieces at the two ends of the fin body are arranged in parallel or in a non-zero included angle.

4. The heat exchanger according to claim 1 or 2,

the extending pieces are respectively formed at two ends of the fin body, and the fin body and the extending pieces at the two ends form a concave shape with an opening at one end;

and in the adjacent heat exchange tubes, the concave opening direction of the fins on one row of the heat exchange tubes is opposite to or the same as that of the fins on the other row of the heat exchange tubes.

5. The heat exchanger according to claim 1 or 2,

a plurality of fins are arranged on each row of the heat exchange tubes in the adjacent heat exchange tubes;

one row among them on the heat exchange tube the extension piece part of fin stretches into another row between the adjacent two of heat exchange tube the fin, or one row among them on the heat exchange tube the extension piece of fin is located another row the heat exchange tube adjacent two outside the region between the fin.

6. The heat exchanger according to claim 1 or 2,

a pair of close ends and a pair of far ends are formed between the fins on one row of the heat exchange tubes and the fins on the other row of the heat exchange tubes in the adjacent heat exchange tubes, and the distance value between the far ends is 25-30 mm; and/or

The heat exchange tube comprises a coil tube, the coil tube comprises straight tube sections and bent tube sections, the bent tube sections are connected with two adjacent straight tube sections, and the surface of each straight tube section is provided with the fins; and/or

The heat exchanger is provided with an air inlet end and an air outlet end, wherein the distribution density of the fins at the air inlet end of the heat exchanger is smaller than that of the fins at the air outlet end; and/or

The heat exchanger also comprises a pre-cooling pipe section, the pre-cooling pipe section is communicated with the heat exchange pipe and is positioned on one side of the heat exchange pipe, the heat exchanger is provided with a first end and a second end which are opposite, the pre-cooling pipe section is arranged at the first end, the heat exchange pipe and the fins are positioned between the pre-cooling pipe section and the second end, and the distribution density of the fins is increased from the pre-cooling pipe section to the second end; and/or

Each row of heat exchange tubes is provided with a plurality of straight tube sections which are arranged at intervals, the straight tube sections penetrate through the same fin, or the fins penetrate through the straight tube sections respectively.

7. A refrigeration apparatus, comprising:

a housing;

the heat exchanger of any one of claims 1 to 6, disposed within the housing.

8. The refrigeration appliance according to claim 7,

the refrigeration equipment is provided with an inner container, and the inner container is accommodated in the shell; wherein the content of the first and second substances,

the heat exchanger is arranged on the outer side of the inner container, and/or a partition is arranged in the inner container, the partition is a hollow part, and the heat exchanger is accommodated in the partition.

9. A mould for the assembly of a heat exchanger according to any of claims 1 to 6, characterized in that it comprises:

a body portion formed with a tube groove and a plurality of fin grooves arranged at intervals along an extending direction of the tube groove, wherein,

the inner wall surface of the fin groove is provided with a supporting adaptation part, the supporting adaptation part comprises a convex part or a concave part, and the supporting adaptation part is used for being matched with and abutting against the transition connection part of the fin body and the extension piece of the supporting fin.

10. The mold according to claim 9,

the fin slot comprises a plurality of sub-slots;

one or more tube slots are formed on the body part, wherein the subslot is distributed on at least one of two sides of each tube slot.

11. The mold according to claim 9 or 10,

the support adapter comprises a first face and a second face, the first face is inclined relative to the second face, the first face is used for supporting the extension piece in an abutting mode, the second face is used for supporting the fin body in an abutting mode, and the first face and the second face are in transition joint to define the protruding portion or the recessed portion; and/or

The fin slot has a first side wall surface and a second side wall surface which are opposite, a space suitable for the fin to be inserted is formed between the first side wall surface and the second side wall surface, the support adapting part is formed on the first side wall surface, and the second side wall surface is configured as a guide surface suitable for guiding the fin to enter the fin slot; and/or

The fin slots are configured to be a clearance fit with the fins.