CN108286844B

CN108286844B - Annular evaporator, preparation method thereof and refrigeration equipment

Info

Publication number: CN108286844B
Application number: CN201810059087.8A
Authority: CN
Inventors: 魏中; 吴默; 任振海; 史慧新
Original assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Current assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Priority date: 2018-01-22
Filing date: 2018-01-22
Publication date: 2020-04-17
Anticipated expiration: 2038-01-22
Also published as: CN108286844A

Abstract

The invention discloses an annular evaporator, a preparation method thereof and refrigeration equipment, wherein the annular evaporator comprises the following components: a pipe member forming a spiral shape extending gradually outward from inside; a first fin having a first perforation; the second fin is provided with a second through hole, the second fin and the first fin are arranged at intervals along the extending direction of the pipe fitting, the second fin is also provided with a fixing hole with one side opened, the pipe fitting is suitable for being inserted from the opening on one side of the fixing hole, and the pipe section penetrating through the second through hole of the second fin is adjacent to the pipe section inserted in the fixing hole of the second fin. According to the annular evaporator provided by the embodiment of the invention, the second fin with the fixing hole and the second through hole is adopted, so that the effect of winding and fixing the edge can be realized, the production efficiency of the annular evaporator is improved, and the structural compactness of the annular evaporator is ensured.

Description

Annular evaporator, preparation method thereof and refrigeration equipment

Technical Field

The invention relates to the technical field of refrigeration equipment, in particular to an annular evaporator, a preparation method thereof and refrigeration equipment.

Background

The evaporator is a key refrigeration accessory in refrigeration equipment such as a refrigerator, an air conditioner and the like, the evaporator on the existing refrigerator mainly adopts a plate-tube evaporator, and during preparation, evaporator supports at two ends are generally required to be adopted for supporting and fixing. In the direct cooling refrigerator, a wire-tube evaporator is mainly adopted, and the direct cooling refrigerator is generally wound on a refrigerator body before the refrigerator body is foamed.

For the ring-shaped evaporator, the currently used fixing method is to bind and fix the evaporator by using metal wires after the evaporator is formed (i.e. the aluminum tube is wound into the evaporator), and this preparation method has the following disadvantages:

(1) the material and time cost is increased, the process is complex and the consumed time is long due to the fact that the annular evaporator is bound by the metal wires;

(2) and when the heater is added on the evaporator in the later stage, the fixed metal wire needs to be taken down, and after the heater is installed, the evaporator and the heater are fixed by adopting the metal wire again.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art.

Therefore, the invention provides the annular evaporator which is simple and compact in structure, easy to machine and manufacture and beneficial to saving materials and time.

The invention also provides refrigeration equipment with the annular evaporator.

The invention also provides a preparation method of the annular evaporator.

An annular evaporator according to an embodiment of a first aspect of the invention comprises: a tube forming a volute extending gradually outward from inside; a first fin having a first aperture adapted for the tube to pass through; the second fin is provided with a second through hole suitable for the pipe fitting to penetrate through, and the second fin and the first fin are arranged at intervals along the extending direction of the pipe fitting, wherein the second fin is also provided with a fixing hole with one side opened, the pipe fitting is suitable for being inserted from the opening on one side of the fixing hole, and a pipe section of the pipe fitting penetrating through the second through hole of the second fin is arranged adjacent to a pipe section inserted in the fixing hole of the second fin.

According to the annular evaporator provided by the embodiment of the invention, the second fin with the fixing hole and the second through hole is adopted, so that not only can the heat transfer effect be realized, but also the pipe fitting can be inserted into the fixing hole during winding, namely, the second fin can fasten the pipe sections which are adjacently arranged of the spiral pipe fitting together, the effect of winding and fixing the pipe fitting simultaneously is realized, the production efficiency of the annular evaporator can be improved, and the structural compactness of the annular evaporator can be ensured.

According to an embodiment of the present invention, any two adjacent tube segments of the tube member in the inward and outward directions thereof are respectively connected to the same second fin.

According to an embodiment of the present invention, the width directions of the first fin and the second fin extend in the inside-outside direction of the volute, respectively.

According to a further embodiment of the present invention, the second through hole and the fixing hole are spaced apart in a width direction of the second fin.

According to one embodiment of the invention, the annular evaporator is formed into a U-shaped tube by the pipe member before the forming, and the annular evaporator is formed into a spiral shape extending gradually outward from the inside by the two branch tubes of the U-shaped tube after the forming.

Optionally, the two legs of the U-shaped tube are arranged in an up-down direction.

Optionally, the first fin is provided with two first through holes, the two first through holes are arranged at intervals in the vertical direction, the second fin is provided with two second through holes and two fixing holes, the two second through holes are arranged at intervals in the vertical direction, and the two fixing holes are arranged at intervals in the vertical direction.

According to an embodiment of the present invention, the first fin and the second fin each include a plurality of fins, the plurality of fins are arranged at intervals along an extending direction of the tube, and at least two second fins are connected to each ring of the tube.

A refrigeration device according to an embodiment of the second aspect of the invention comprises a ring evaporator according to the above-described embodiment.

According to the refrigeration equipment provided by the embodiment of the invention, the annular evaporator is adopted, so that the structure is simpler and more compact, the production efficiency is favorably improved, and the material cost and the time cost are reduced.

A method of manufacturing an annular evaporator according to an embodiment of the third aspect of the present invention includes the steps of: s1, providing a first fin, a second fin, two long pipe fittings and a U-shaped bend; s2, fixing the first fin and the second fin on the two long pipe fittings, and then connecting the two ends of the U-shaped bend with the two long pipe fittings to obtain a U-shaped pipe with fins; and S3, winding the finned U-shaped tube into a vortex shape by using a forming device of the annular evaporator to manufacture the annular evaporator.

According to the preparation method of the annular evaporator, compared with the manufacturing process of forming and fixed distribution of the evaporator in the related art, the process steps are simpler, material cost and time cost are saved, and the prepared annular evaporator is simpler and more compact in structure.

According to one embodiment of the invention, the first fin is provided with two first through holes suitable for the long-shaped tube to penetrate through, the second fin is provided with two second through holes suitable for the long-shaped tube to penetrate through, the second fin is also provided with two fixing holes with one side opened, the U-shaped tube is suitable for being inserted from one side opened of the fixing holes when being wound, and the tube sections penetrating through the second through holes of the second fin are arranged adjacent to the tube sections inserted into the fixing holes of the second fin.

Optionally, in step S2, the first fin and the second fin are inserted into two of the long tubes, and then the first fin and the second fin are fixed to the long tubes by using a collapsible process.

Optionally, the molding device comprises: the annular evaporator comprises an arc-shaped winding pipe fitting, wherein at least one part of the side wall surface of the arc-shaped winding pipe fitting forms an arc-shaped surface which is matched with the inner ring of the manufactured annular evaporator; the fixing piece is installed on the side wall surface of the arc-shaped winding pipe fitting and used for fixing the U-shaped bend, and the U-shaped pipe is suitable for being wound along the extending direction of the arc-shaped surface to form a vortex shape.

Optionally, the arc surface forms a vortex shape, a first end of the arc surface is located on the inner side of the fixed part, and a second end of the arc surface is located on the outer side of the fixed part.

According to a further embodiment of the present invention, after step S3, the method further comprises: taking the annular evaporator off the forming device, and welding and connecting the liquid storage device with the annular evaporator; and inflating and cleaning the annular evaporator.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, 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 structural view of a molding apparatus of a ring-shaped evaporator according to an embodiment of the present invention;

FIG. 2 is a side view of the molding apparatus shown in FIG. 1;

FIG. 3 is a front view of the molding apparatus shown in FIG. 1;

FIG. 4 is an exploded view of the ring evaporator prior to forming;

FIG. 5 is a schematic view of the structural assembly of the ring evaporator prior to molding;

FIG. 6 is a side view of the structure shown in FIG. 5;

FIG. 7 is a schematic structural view of the tube member of the ring evaporator before forming;

FIG. 8 is a schematic view of the configuration of a first fin of the annular evaporator;

FIG. 9 is a schematic structural view of a second fin of the annular evaporator;

FIG. 10 is a schematic view of the construction of the annular evaporator;

FIG. 11 is a partial schematic view of a ring evaporator;

FIG. 12 is a flow chart of a preparation of a ring evaporator according to an embodiment of the present invention.

Reference numerals:

the molding apparatus 100 is provided with a molding device,

base 11, stationary member 12, arcuate wrapping member 13, arcuate surface 131, first end 1311, second end 1312, vertical plane 132,

the shape of the ring-shaped evaporator 200,

the pipe 21, the U-shaped bend 22, the fin 23, the first fin 231, the first through hole 2311, the second fin 232, the second through hole 2321 and the fixing hole 2322.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

An annular evaporator 200 according to an embodiment of the present invention is described below with reference to fig. 1 to 11.

As shown in fig. 1 to 11, an annular evaporator 200 according to an embodiment of the present invention includes: a tube 21, a first fin 231 and a second fin 232.

The pipe member 21 forms a spiral shape extending gradually outward from the inside. The first fin 231 has a first through hole 2311 adapted to the pipe member 21 to pass through. The second fin 232 has a second through hole 2321 adapted to be penetrated by the tube 21, and the second fin 232 and the first fin 231 are arranged at a distance along the extending direction of the tube 21.

The second fin 232 further has a fixing hole 2322 opened at one side, the pipe member 21 is adapted to be inserted through the one side opening of the fixing hole 2322, and the pipe section of the pipe member 21 inserted through the second through hole 2321 of the second fin 232 is disposed adjacent to the pipe section inserted through the fixing hole 2322 of the second fin 232. That is, when the elongated tube 21 is wound into the spiral tube 21, the second fins 232 can fasten the tube sections at different positions of the tube 21 together, so as to achieve the effect of fixing while winding.

According to the annular evaporator 200 of the embodiment of the invention, the second fin 232 with the fixing hole 2322 and the second through hole 2321 is adopted, so that not only can a heat transfer effect be realized, but also the pipe 21 can be inserted into the fixing hole 2322 during winding, that is, the second fin 232 can fasten the pipe sections of the spiral pipe 21 which are adjacently arranged together, so that an effect of winding and fixing the pipe sections simultaneously is realized, the production efficiency of the annular evaporator 200 can be improved, and the structural compactness of the annular evaporator 200 can be ensured.

Therefore, the ring-shaped evaporator 200 according to the embodiment of the present invention reduces the number of process steps, makes the fixing of the ring-shaped evaporator 200 simpler and more convenient, and saves material and time costs, compared to the evaporator formed and fixedly distributed in the related art.

In some examples, the size of the fixing hole 2322 is 1/2-3/4 circle, the opening size of the fixing hole 2322 is slightly smaller than the diameter of the pipe 21, the second fin 232 is a metal member with good elastic deformability, and after the pipe 21 is pressed into the fixing hole 2322, the fixing hole 2322 restores to the original size, so that the second fin 232 clamps the pipe 21 and fixes pipe sections at different positions of the pipe 21 together.

According to an embodiment of the present invention, any two tube segments adjacent to each other in the inside-outside direction of the tube member 21 are respectively connected to the same second fin 232.

In other words, the pipe 21 forming the spiral shape includes a plurality of arc-shaped pipe sections connected in sequence from inside to outside, and any two adjacent arc-shaped pipe sections are fixed together through the second fin 232, that is, in any two adjacent arc-shaped pipe sections, one of the arc-shaped pipe sections is inserted into the second through hole 2321 of the second fin 232, and the other arc-shaped pipe section is inserted into the fixing hole 2322 from the opening of the fixing hole 2322, so that the two adjacent arc-shaped pipe sections are fixed together, an effect of winding and fastening is achieved, and the production efficiency of the annular evaporator 200 is improved.

As shown in fig. 4 to 6, and fig. 10 and 11, according to an embodiment of the present invention, the first fins 231 include a plurality of first fins 231, the plurality of first fins 231 are arranged at intervals along the extending direction of the pipe member 21, and each ring of the pipe member 21 forming the spiral shape is provided with a plurality of first fins 231 arranged at intervals along the extending direction thereof.

Further, the second fins 232 comprise a plurality of second fins 232, the plurality of second fins 232 are respectively arranged at intervals with the plurality of first fins 231, wherein at least two second fins 232 arranged at intervals are connected to each annular arc-shaped tube section of the tube member 21, so that the adjacent arranged arc-shaped tube sections are fastened at least two different positions of the tube member 21, and the structural compactness of the annular evaporator 200 is further improved.

In some examples, each annular arc-shaped pipe section is connected with two second fins 232 which are arranged oppositely, that is, the arc-shaped pipe section respectively passes through the second through holes 2321 of the two second fins 232, and then the adjacent arc-shaped pipe sections are inserted into the fixing holes 2322 on the two second fins 232 during winding, so that the connection reliability of the two adjacent arc-shaped pipe sections is ensured, the connection is convenient, and the production efficiency is higher.

According to an embodiment of the present invention, the width directions of the first fin 231 and the second fin 232 extend in the inside and outside directions of the spiral shape, respectively, and the second penetration hole 2321 and the fixing hole 2322 are provided at an interval in the width direction of the second fin 232. Therefore, the same second fin 232 can fix two arc-shaped pipe sections which are adjacently arranged in the inner and outer directions of the pipe fitting 21 together, and the operation is simple and the connection is more reliable.

As shown in fig. 4 to 7, according to an embodiment of the present invention, the pipe member 21 of the ring-shaped evaporator 200 forms a U-shaped pipe before the formation, and as shown in fig. 10 and 11, the two branch pipes of the U-shaped pipe of the ring-shaped evaporator 200 form a spiral shape gradually extending outward from the inside after the formation, respectively.

Specifically, when the annular evaporator 200 is manufactured, the plurality of first fins 231 and the plurality of second fins 232 are inserted into the two long pipe members 21, then the first fins 231 and the second fins 232 can be fixed on the long pipe members 21 through the expansion and contraction process, and after the first fins 231 and the second fins 232 are fixed, the two ends of the U-shaped bend 22 are connected with one ends of the two long pipe members 21 in a welding manner, so that a U-shaped pipe with the fins 23 is formed; the U-shaped bend 22 of the U-shaped tube with the fins 23 is fixed, and then the U-shaped tube is wound from the inside to the outside into a spiral shape, thereby producing the ring-shaped evaporator 200. In the winding process, the second fin 232 can fix two adjacent circles of arc-shaped pipe sections of the spiral U-shaped pipe together, so that the effect of winding and fixing the pipe sections simultaneously is achieved, and the production efficiency is higher.

In some examples, two branch pipes (i.e., the elongated pipes 21) of the U-shaped pipe are arranged in the up-down direction, the U-shaped bend 22 of the U-shaped pipe is fixed, and then the two elongated pipes 21 of the U-shaped pipe are respectively arranged in the up-down direction and wound into a vortex shape arranged in the up-down direction, so that the structure is compact and the winding is convenient.

As shown in fig. 8 and 9, in some examples, the first fin 231 is provided with two first through holes 2311, the two first through holes 2311 are spaced apart in the up-down direction, the second fin 232 is provided with two second through holes 2321 and two fixing holes 2322, the two second through holes 2321 are spaced apart in the up-down direction, and the two fixing holes 2322 are spaced apart in the up-down direction.

Thereby, the two elongated tubes 21 of the hairpin tube pass through the two first through holes 2311 of the first fin 231 and pass through the two second through holes 2321 of the second fin 232, respectively, thereby serving as a fixing function.

A refrigeration apparatus (not shown) according to an embodiment of the present invention includes the ring-shaped evaporator 200 described in the above-described embodiment.

Since the annular evaporator 200 according to the embodiment of the present invention has the above technical effects, the refrigeration apparatus according to the embodiment of the present invention also has the above technical effects, i.e., the refrigeration apparatus has a simple and compact structure, high production efficiency, and low material cost and time cost.

A method of manufacturing the ring evaporator 200 according to the embodiment of the present invention will be described in detail below with reference to fig. 1 to 12.

As shown in fig. 1 to 12, a method of manufacturing a ring evaporator according to an embodiment of the present invention includes the steps of:

s1, providing a first fin, a second fin, two long pipe fittings and a U-shaped bend;

s2, fixing the first fin and the second fin on the two long pipe fittings, and then connecting the two ends of the U-shaped bend with the two long pipe fittings to obtain a U-shaped pipe with fins;

and S3, winding the finned U-shaped tube into a vortex shape by using a forming device of the annular evaporator to manufacture the annular evaporator.

In some examples, in step S2, the first fin and the second fin are inserted into two of the long tubes, and then the first fin and the second fin are fixed to the long tubes by using a collapsible process.

That is to say, before the hairpin tube is wound, the plurality of first fins and the plurality of second fins need to be penetrated and arranged on the two long pipe fittings, then the plurality of first fins and the plurality of second fins are fixed through the expansion and contraction process, and finally the two ends of the U-shaped bend are welded with one ends of the two long pipe fittings so as to manufacture the hairpin tube with the fins. Therefore, the connection reliability of the first fin, the second fin and the U-shaped tube is ensured.

In some examples, after step S3, further comprising: taking the annular evaporator off the forming device, and welding and connecting the liquid storage device with the annular evaporator; and inflating and cleaning the annular evaporator. Therefore, the prepared annular evaporator can be detected, and the quality of products is guaranteed.

In some examples, the second fin 232 has a second through hole 2321 and a fixing hole 2322 opened at one side, and when the hairpin tube is wound, wherein a branch tube of the hairpin tube is adapted to be inserted from the one side opening of the fixing hole 2322, a tube section of the hairpin tube inserted through the second through hole 2321 of the second fin 232 is disposed adjacent to a tube section inserted in the fixing hole 2322 of the second fin 232. That is, the tube sections at different positions of the hairpin tube can be fastened together by the second fin 232, and the effect of fixing while winding is achieved. Compared with the evaporator preparation method in the related art in which forming and fixed distribution are performed, the process steps are reduced, the fixing of the annular evaporator 200 is simpler and more convenient, and the material and time costs are saved.

In some specific examples, the first fin 231 is provided with two first through holes 2311 for the two branch pipes of the hairpin pipe to pass through, the second fin 232 is provided with two second through holes 2321 for the two branch pipes of the hairpin pipe to pass through, the second fin 232 is further provided with two fixing holes 2322 opened at one side, the hairpin pipe is suitable for being inserted from one side of the fixing holes 2322 when being wound, and the pipe sections inserted into the second through holes 2321 of the second fin 232 are arranged adjacent to the pipe sections inserted into the fixing holes 2322 of the second fin 232.

In some examples, the first fin 231 and the second fin 232 may be made of a metal material having good thermal conductivity and elastic deformability, for example, the first fin 231 and the second fin 232 are both made of aluminum, so that during the tube winding process, the aluminum tube enters the fixing hole 2322 of the second fin 232, and due to the elastic deformation of the metal material, after the aluminum tube enters the fixing hole 2322, the fixing hole 2322 returns to its original shape, thereby performing a fixing function.

According to the preparation method of the annular evaporator 200 provided by the embodiment of the invention, when the annular evaporator 200 is prepared, the forming and fixing are carried out simultaneously, namely, the forming process and the fixing process of the annular evaporator 200 are combined into one step, so that the process flow is reduced, the production efficiency is improved, and meanwhile, no trouble is caused to the embedding of a defrosting heater in the later period.

Alternatively, the tube 21 may be an aluminum tube, a copper tube, or made of other high thermal conductivity material.

The specific production process of the ring evaporator will be described below with reference to FIG. 12, taking an aluminum tube as an example:

the first step is as follows: cutting fins of a desired size and shape, such as the first fin and the second fin described in the above embodiments;

the second step is that: cutting the aluminum pipe into required length to obtain two long aluminum pipes and a U-shaped bend;

the third step: penetrating fins on the aluminum pipe, specifically, in the fin placing process, replacing part of first fins with second fins with fixing functions, and removing the same number of first fins at positions to be clamped by fixing holes;

the fourth step: the aluminum pipe is expanded and contracted, so that the fins (the first fin and the second fin) are fixed on the aluminum pipe;

the fifth step: welding two ends of the U-shaped bend with two aluminum pipes with fins to form a U-shaped pipe with fins;

and a sixth step: placing a U-shaped bend of a U-shaped pipe with a first fin and a second fin on a fixing piece of a forming device of the annular evaporator;

the seventh step: the aluminum pipe is wound around the annular evaporator through the rotary forming device, specifically, the pipe winding process is horizontal winding, the aluminum pipe enters the fixing hole of the second fin in the pipe winding process, and the fixing hole recovers the original shape after the aluminum pipe enters the fixing hole due to elastic deformation of the metal material, so that the fixing effect is achieved;

eighth step: taking the annular evaporator off the forming device, and welding the liquid storage device and the like;

the ninth step: and (5) inflating, detecting leakage and cleaning.

The function of the fixing hole on the second fin is that in the process of forming the evaporator, when the aluminum pipe is wound into the annular evaporator by rotating the forming device, the aluminum pipe can be clamped into the fixing hole in the winding process due to horizontal winding, and the adjacent aluminum pipes are mutually fastened together through the stress action of the fixing hole, so that the fixing purpose is achieved.

A molding apparatus 100 of a ring-shaped evaporator 200 according to an embodiment of the present invention is described below with reference to fig. 1 to 11.

As shown in fig. 1 to 7, the ring-shaped evaporator 200 is made of a tube 21, wherein the ring-shaped evaporator 200 has a tube bend before forming, which can form a U-bend.

The molding apparatus 100 of the ring-shaped evaporator 200 according to the embodiment of the present invention includes: arcuate about the pipe element 13 and the securing element 12. The arc forms an arc face 131 around at least a portion of the side wall face of the pipe member 13, the arc face 131 fitting the inner ring of the ring-shaped evaporator 200 being manufactured. The fixing member 12 is mounted on a side wall surface of the arc-shaped winding pipe member 13 for fixing the U-shaped bend 22 of the ring-shaped evaporator 200 before forming, and the pipe member 21 is adapted to be wound along an extending direction of the arc-shaped surface 131 to form the ring-shaped evaporator 200.

Annular evaporator 200 is in the forming process, and pipe fitting 21 is around establishing along the extending direction of arcwall face 131 to the arc that the inner circle profile that makes annular evaporator 200 formed and corresponds with the extending direction of arcwall face 131, arcwall face 131 and annular evaporator 200's inner circle adaptation promptly, easy operation does benefit to the shaping size and the design size of the annular evaporator 200 that make and keeps unanimous, improves production efficiency, thereby realizes annular evaporator 200's batch production.

According to the forming device 100 of the annular evaporator 200 provided by the embodiment of the invention, the arc-shaped winding pipe fitting 13 with the arc-shaped surface 131 matched with the inner ring of the annular evaporator 200 is arranged, so that the arrangement of the fixing piece 12 is convenient, and the fixing piece 12 is not easy to fall off; also, in the molding process, a portion of the pipe member 21 is fixed to the fixing member 12, and the remaining portion is rotatable about the pipe member 13 with respect to the arc along the arc surface 131, thereby forming the ring-shaped evaporator 200 with convenience.

According to one embodiment of the invention, the arc forms a spiral around at least a portion of the contour of the sidewall surface of the pipe element 13. Thus, the pipe member 21 can be gradually wound from inside to outside around the extension direction of the side wall surface of the arc-shaped winding pipe member 13, so that the pipe member 21 is wound into a spiral shape to manufacture the ring-shaped evaporator 200.

According to one embodiment of the invention, arcuate surface 131 has a first end 1311 and a second end 1312 and first end 1311 of arcuate surface 131 is located inward of second end 1312 of arcuate surface 131, and fixed member 12 is disposed adjacent first end 1311 and second end 1312 of arcuate surface 131. Thus, the U-bend 22 is mounted on the fixing member 12, and then can be wound from the first end 1311 to the second end 1312 along the extending direction of the arc-shaped face 131, thereby producing the ring evaporator 200.

As shown in fig. 1-3, in some specific examples, the arcuate shape also has a vertical plane 132 around the side wall of the pipe element 13, where "vertical" may be in the up-down direction as shown in fig. 2 and 3. One end (inner end) of the vertical plane 132 is connected to the first end 1311 of the arc-shaped surface 131 and the other end (outer end) of the vertical plane 132 is connected to the second end 1312 of the arc-shaped surface 131, and the fixing member 12 is disposed at a position adjacent to the first end 1311 of the arc-shaped surface 131 and spaced apart from the vertical plane 132.

That is, both ends of the arc-shaped surface 131 are disposed adjacent to the fixed member 12, the first end 1311 of the arc-shaped surface 131 is disposed at the inner side of the fixed member 12, the second end 1312 of the arc-shaped surface 131 is disposed at the outer side of the fixed member 12, both ends (inner end and outer end) of the vertical plane 132 extending in the up-down direction are respectively connected to the first end 1311 and the second end 1312 of the arc-shaped surface 131, that is, the arc-shaped surface 131 gradually extends outward from the first end 1311 to the second end 1312 along the circumferential direction of the center thereof, and the pipe member 21 is wound along the extending direction of the arc-shaped surface 131, thereby.

In some examples, the minimum distance of the fixture 12 from the vertical plane 132 is greater than the diameter of the tube 21 at the U-bend 22. Thus, the U-shaped bend 22 can be inserted between the attachment member 12 and the vertical plane 132 to mount the U-shaped bend 22 to the attachment member 12.

For example, the fixing member 12 may be formed in a cylinder shape with a constant section extending in a horizontal direction, wherein one end (an inward end) of the fixing member 12 is fixed on the arc-shaped surface 131 and is adjacent to the first end 1311 of the arc-shaped surface 131, the other end (an outward end) of the fixing member 12 forms a free end, the cylindrical fixing member 12 is parallel to the vertical plane 132, and the distance between the fixing member 12 and the vertical plane 132 is greater than the diameter of the pipe 21 at the U-shaped bend 22, thereby ensuring that the U-shaped bend 22 is smoothly installed on the fixing member 12.

According to an embodiment of the present invention, the annular evaporator 200 further includes the fins 23, and by providing the fins 23, not only the pipe 21 can be positioned and supported, so that pipe sections at different positions of the pipe 21 are spaced apart, but also the heat exchange surface of the annular evaporator 200 can be enlarged, thereby improving the heat exchange efficiency.

As shown in fig. 3 and 8, in some examples, the fins 23 have perforations suitable for the pipe 21 to pass through (e.g., the first perforations 2311 of the first fins 231 and the second perforations 2321 of the second fins 232), and the height H of the fixing member 12 is greater than or equal to 1/2 of the height H of the fins 23. This ensures that the U-shaped bend 22 can be attached to the fastening element 12.

In some examples, the fixing member 12 is formed in a columnar shape extending in the horizontal direction, and one end of the fixing member 12 is fixed to the arc-shaped face 131, and the other end of the fixing member 12 is formed in a free end, and a distance H between the center of the fixing member 12 and the base 11 described below is 1/2 of the height H of the fin 23 (the first fin 231 and the second fin 232).

As shown in fig. 1 and 8, in some specific examples, the axial length L of the fixing member 12 is equal to or greater than the sum of the radius of 1/2 of the width of the fin 23 (first fin 231) and the radius of the through hole (first through hole 2311). Thereby facilitating the fixing of the pipe 21 with the fins 23 on the fixing member 12, so that the pipe 21 can be smoothly wound into the ring evaporator 200.

As shown in fig. 8 to 11, the fin 23 includes a first fin 231 and a second fin 232, the first fin 231 has two first through holes 2311 spaced apart in the height direction thereof, the pipe 21 is formed in a U shape and has two branch pipes which can be inserted through the two first through holes 2311 of the first fin 231 so as to arrange the two different branch pipes at intervals; the second fin 232 includes two second through holes 2321 spaced apart along the height direction thereof and two fixing holes 2322 spaced apart along the height direction thereof, the fixing holes 2322 and the second through holes 2321 are spaced apart along the width direction of the second fin 232, and one side of the fixing holes 2322 has an opening, so as to conveniently insert the branch pipe of the pipe 21 into the fixing hole 2322 from the opening, and further enable the pipe 21 to be smoothly wound around the annular evaporator 200 along the extending direction of the arc-shaped surface 131.

As shown in fig. 1-3, according to a further embodiment of the present invention, the molding apparatus 100 further includes: the base 11, the arc is set on the base 11 around the pipe 13, and the fixing member 12 and the base 11 are arranged at intervals, so as to ensure that the U-shaped bend 22 can be smoothly installed on the fixing member 12. Through setting up base 11, make things convenient for the arc to wind the setting of pipe fitting 13, in the shaping process, a part of pipe fitting 21 is fixed on mounting 12, and remaining part can rotate along arcwall face 131 around pipe fitting 13 for the arc to make annular evaporator 200, the shaping is convenient.

In some examples, the molding device 100 may be a plastic material, or other material such as steel, so as to ensure a certain strength. Further, the forming device 100 can be an integrally formed part, and the integrally formed structure is easy to process and manufacture and convenient to form, so that the structure is more compact and stable, connecting pieces can be omitted, the cost is reduced, and the production efficiency is improved.

In some examples, the base 11 forms a planar plate member that lays beneath the arcuate wound tube member 13. For example, the base 11 may be formed as a circular plate, or may be formed as a rectangular plate, and the arc-shaped winding pipe 13 is disposed on one side surface of the base 11, so that the structure is simple and the forming is convenient.

Wherein, the base 11 surface area that forms the flat panel spare can be greater than the arc and wind the area occupied of pipe fitting 13, of course, the base 11 surface area that forms the flat panel spare also can be less than or equal to the arc and wind the bottom area of pipe fitting 13, through setting up base 11, can make things convenient for pipe fitting 21 to wind on pipe fitting 13 is wound to the arc to improve the coiling efficiency and the coiling planarization of annular evaporator 200.

Specifically, in the forming process of the ring-shaped evaporator 200, the pipe 21 inserted through the fins 23 needs to be placed on the base 11, then the U-shaped bend 22 is fixed at the position of the fixing member 12, so that the fixing member 12 fixes the pipe 21, then the pipe 21 is manually rotated around the pipe 13 around the arc shape, and finally the ring-shaped evaporator 200 is manufactured. That is, the arc may remain stationary about the tube member 13 and the tube member 21 may rotate about the arc about the tube member 13 during the forming process.

In other optional examples, the molding apparatus 100 further includes: and the driver (not shown) is used for driving the base 11 to rotate, and the driver is arranged at the bottom of the base 11. That is, during the molding process, the pipe member 21 is kept stationary, and the arc is rotated around the pipe member 13, the base 11, and the like, thereby making the ring-shaped evaporator 200.

Of course, the forming process of the ring-shaped evaporator 200 of the present invention is not limited thereto, and for example, the driver may move the arc around the pipe member 13 in the direction of the pipe member 21 while driving the arc around the pipe member 13 in rotation, that is, the arc around the pipe member 13 has both the rotation function and the lateral movement function.

Other constructions and operations of the loop evaporator 200, the refrigeration apparatus according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above 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.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An annular evaporator, comprising:

a tube forming a volute extending gradually outward from inside;

a first fin having a first aperture adapted for the tube to pass through;

a second fin having a second through hole adapted to the tube to be inserted therethrough, the second fin and the first fin being arranged at an interval in an extending direction of the tube,

the second fin is provided with a fixing hole with an opening at one side, the pipe fitting is suitable for being inserted from the opening at one side of the fixing hole, and a pipe section of the pipe fitting, which penetrates through the second penetrating hole of the second fin, is arranged adjacent to a pipe section inserted in the fixing hole of the second fin.

2. The ring evaporator as recited in claim 1, wherein any two tube segments adjacent to each other in the inside-outside direction of said tube member are respectively connected to the same second fin.

3. The annular evaporator as set forth in claim 1 wherein the width directions of the first and second fins extend in the inside-outside direction of the spiral, respectively.

4. The annular evaporator as recited in claim 1 or 3, wherein said second penetration hole and said fixing hole are provided at a spacing in a width direction of said second fin.

5. The ring evaporator according to claim 1, wherein the pipe member forms a U-shaped pipe before the ring evaporator is molded, and the two branch pipes of the U-shaped pipe form a spiral shape gradually extending outward from the inside after the ring evaporator is molded.

6. The ring evaporator as set forth in claim 5 wherein the two legs of the U-shaped tube are arranged in an up-down direction.

7. The ring evaporator as recited in claim 5 or 6, wherein said first fin is provided with two of said first through holes, which are arranged at an interval in an up-down direction,

the second fin is provided with two second through holes and two fixed holes, the two second through holes are arranged at intervals along the vertical direction, and the two fixed holes are arranged at intervals along the vertical direction.

8. The annular evaporator as recited in claim 1, wherein said first fins and said second fins are respectively comprised of a plurality of ones, the plurality of said first fins being disposed at intervals along an extending direction of said tube member, at least two of said second fins being disposed at intervals being connected to each ring of said tube member.

9. Refrigeration device, characterized in that it comprises an annular evaporator according to any of claims 1 to 8.

10. The preparation method of the annular evaporator is characterized by comprising the following steps of:

s3, winding the finned U-shaped tube into a vortex shape by using a forming device of the annular evaporator to manufacture the annular evaporator,

the first fin is provided with two first through holes suitable for the long-shaped pipe to penetrate through, the second fin is provided with two second through holes suitable for the long-shaped pipe to penetrate through, the second fin is further provided with two fixing holes with one side opened, the U-shaped pipe is suitable for being inserted from one side opening of the fixing holes during winding, and pipe sections penetrating through the second through holes of the second fin and pipe sections inserted into the fixing holes of the second fin are arranged adjacently.

11. The production method of a ring evaporator according to claim 10, wherein in step S2, the first fin and the second fin are pierced on two of the elongated tube members, and then the first fin and the second fin are fixed on the elongated tube members by a collapsible process.

12. The method for manufacturing a ring evaporator according to claim 10, wherein the molding device comprises:

the annular evaporator comprises an arc-shaped winding pipe fitting, wherein at least one part of the side wall surface of the arc-shaped winding pipe fitting forms an arc-shaped surface which is matched with the inner ring of the manufactured annular evaporator;

the fixing piece is installed on the side wall surface of the arc-shaped winding pipe fitting and used for fixing the U-shaped bend, and the U-shaped pipe is suitable for being wound along the extending direction of the arc-shaped surface to form a vortex shape.

13. The method of claim 12, wherein the arcuate surface forms a spiral shape and a first end of the arcuate surface is located inside a stationary member and a second end of the arcuate surface is located outside the stationary member.

14. The method for manufacturing a ring evaporator according to claim 10, further comprising, after step S3:

taking the annular evaporator off the forming device, and welding and connecting the liquid storage device with the annular evaporator;

and inflating and cleaning the annular evaporator.