CN217110089U - Special-shaped tube fin evaporator and refrigerator - Google Patents

Abstract

The utility model discloses a special-shaped tube fin evaporator and refrigerator relates to refrigerator technical field. The heat exchange device comprises a front bracket, a rear bracket, a plurality of fins arranged between the front bracket and the rear bracket, and a heat exchange coil pipe sequentially penetrating through the front bracket, the fins and the rear bracket; the cross section of the heat exchange coil is oval, pipe penetrating holes matched with the heat exchange coil are formed in the front support, the rear support and the fins, and the heat exchange coil is in interference fit with the pipe penetrating holes. The cross section of the heat exchange coil pipe is designed to be oval, so that the clearance of the heat exchange pipe is increased, and the frost containing space is increased, so that the evaporator is not easy to generate frost blockage during working; meanwhile, the windward area of the heat exchange tube is increased, so that the effective heat exchange area of the air side of the evaporator is increased, the heat exchange efficiency is improved, and the refrigerating performance and the reliability of the refrigerator are further improved.

Description

Special-shaped tube fin evaporator and refrigerator

Technical Field

The utility model belongs to the technical field of the refrigerator, especially, relate to a special-shaped tube fin evaporator and refrigerator.

Background

In a common frost-free air-cooled refrigerator in the current market, a fin evaporator is used most widely, and the effective heat exchange area, the heat exchange efficiency and the reliability of the evaporator become the most key performance indexes for evaluating the performance of the refrigerator.

The Chinese patent with the granted publication number of CN203501564U discloses a fin evaporator, which comprises a plurality of evaporator straight pipes arranged side by side, wherein the end parts between the adjacent evaporator straight pipes are connected through an evaporator U-shaped pipe; the evaporator straight pipe is axially provided with a plurality of evaporator fins side by side and sequentially penetrates through the evaporator fins. In order to improve the heat exchange area of the evaporator, the heat exchange coil of the evaporator adopts regular triangle staggered calandria to realize the maximum pipeline density, and the pipeline is obliquely inserted with fins to strengthen heat exchange. The evaporator can realize a large heat exchange area in a small space, and the staggered pipeline has obvious air turbulence effect and high heat exchange efficiency. But the evaporator pipelines are densely arranged, the frost accommodating space is small, and frost blockage is easy to occur to influence the reliability.

In the chinese patent with the publication number of CN207272026U, a push-expansion fin evaporator is disclosed, in order to increase the frost-containing space on the surface of the evaporator and improve the reliability, the heat exchange coil of the evaporator is designed to be arranged in parallel. The aluminum pipe which is bent into the U-shaped bend penetrates through two holes of the fins to be in a string shape, the outer diameter of the aluminum pipe is expanded in a pipe expanding mode, the fins and the pipeline are assembled together in an interference fit mode, and the pipe bending equipment bends the expanded workpiece into a snake-shaped bend to form the push-expansion type evaporator. The evaporator has the advantages that the heat exchange pipelines are arranged in parallel, the frost containing space is large, the frost block is not easy to be discharged out of the evaporator, the number of the heat exchange pipelines in unit volume is small, and the heat exchange area is small.

By combining the prior art, the heat exchange pipelines of the finned evaporator are arranged in a staggered manner according to a regular triangle, the frost containing space of the evaporator is small, frost blockage is easy to occur, and the reliability is poor; the heat exchange pipelines are arranged in a row, so that the effective heat exchange area in the unit volume of the evaporator is small, and the heat exchange performance is insufficient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dysmorphism pipe fin evaporator and refrigerator. The cross section of the heat exchange coil is designed to be oval, so that the clearance of the heat exchange coil is increased, and the frost accommodating space is increased, so that the evaporator is not easy to frost and block during working; meanwhile, the windward area of the heat exchange coil is increased, the heat exchange efficiency is improved, and the existing problems are solved.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a special-shaped tube fin evaporator, which comprises a front bracket, a rear bracket, a plurality of fins arranged between the front bracket and the rear bracket, and a heat exchange coil pipe which sequentially penetrates through the front bracket, the fins and the rear bracket; the cross section of the heat exchange coil is oval, tube penetrating holes matched with the heat exchange coil are formed in the front support, the rear support and the fins, and the heat exchange coil is in interference fit with the tube penetrating holes.

As an optimized technical proposal of the utility model, the heat exchange coil is a coiled pipe which is formed by arranging a plurality of U-shaped pipes.

As a preferred technical scheme of the utility model, the perforation hole is waist type hole, the size in waist type hole and the cross section phase-match of the U-shaped pipe of heat transfer coil.

As an optimal technical scheme of the utility model, a plurality of fins are evenly arranged along heat transfer coil, and the interval between every fin is 5 ~ 10 mm.

As a preferred technical scheme of the utility model, the U-shaped pipe includes two straight tubes, a tip of two straight tubes is connected through an return bend, connect gradually through the return bend between each U-shaped pipe and form a whole piece route.

As an optimal technical scheme of the utility model, heat exchange coil is a whole piece pipeline and forms through range upon range of bending.

As an optimized technical scheme of the utility model, the fin is dull and stereotyped, also can be the wave board.

As an optimized technical scheme of the utility model, heat transfer coil is any one of aluminum pipe, copper pipe, alloy pipe.

The utility model discloses still relate to a refrigerator that has special-shaped tube fin evaporator as above.

The utility model discloses following beneficial effect has:

the utility model discloses fin evaporator heat transfer pipeline design is oval cross-section, has increased and has held the frost space, has reduced the stifled possibility of evaporimeter during operation emergence frost, and oval pipeline makes the windward area of heat exchange tube increase, and then has increased the effective heat transfer area of evaporimeter air side, and heat transfer performance strengthens, is favorable to improving refrigerator refrigeration performance and reliable performance, and simultaneously, material cost is unchangeable, and manufacturing process is simple, has further improved production efficiency.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the special-shaped tube finned evaporator of the present invention;

FIG. 2 is a schematic view of the heat exchange coil structure of the special-shaped tube finned evaporator of the present invention;

FIG. 3 is a schematic view of a tube-through hole of the special-shaped tube fin evaporator of the present invention;

FIG. 4 is a schematic view of the expanded structure of the heat exchange coil of the special-shaped tube fin evaporator of the present invention;

FIG. 5 is a cross-sectional view A-A of FIG. 4;

in the drawings, the components represented by the respective reference numerals are listed below:

1-front support, 2-rear support, 3-fins, 4-heat exchange coil, 5-perforated holes, 401-straight pipes and 402-bent pipes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Example one

Referring to fig. 1, the present invention relates to a special-shaped tube fin evaporator, which comprises a front bracket 1, a rear bracket 2, a plurality of fins 3 arranged between the front bracket 1 and the rear bracket 2, and a heat exchange coil 4 sequentially penetrating the front bracket 1, the fins 3 and the rear bracket 2; the cross section of the heat exchange coil 4 is oval; the front support 1, the rear support 2 and the fins 3 are provided with pipe penetrating holes 5 matched with the heat exchange coil pipe 4, and the heat exchange coil pipe 4 is in interference fit with the pipe penetrating holes 5; a plurality of fins 3 are evenly arranged along the heat exchange coil 4, and the distance between every two fins 3 is 5-10 mm.

Referring to fig. 2, the heat exchanging coil 4 is a serpentine tube formed by arranging a plurality of U-shaped tubes, each U-shaped tube includes two straight tubes 401, one end portions of the two straight tubes 401 are connected by a bent tube 402, and the U-shaped tubes are connected in sequence by the bent tube 402 to form a whole passage; the heat exchange coil 4 is made of an aluminum pipe, a copper pipe or an alloy pipe.

Referring to fig. 3, a plurality of tube holes 5 are formed in the front bracket 1, the rear bracket 2 and the fins 3, the tube holes 5 are waist-shaped holes, the size of each waist-shaped hole is matched with the cross section of a U-shaped tube of the heat exchange coil 4, and the arrangement and number of the tube holes 5 are determined according to the heat exchange performance of the evaporator.

Referring to fig. 3, the fin 3 is a flat plate structure.

The utility model discloses still include a refrigerator that has special pipe fin evaporator as above.

Example two

Please refer to fig. 2, fig. 4, and fig. 5, which are different from the first embodiment in that the heat exchanging coil 4 is a serpentine pipeline formed by stacking and bending a plurality of pipes, and then the main body of the heat exchanging coil 4 is extruded to form an oval pipe section by using an extruding device, and finally the heat exchanging coil 4 of the serpentine pipeline is folded by using a bending device to form the three-dimensional serpentine heat exchanging coil as shown in fig. 2.

EXAMPLE III

The utility model relates to a special-shaped tube fin evaporator and refrigerator, with the difference of embodiment one, fin 3 is the wave plate structure.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (9)

1. The utility model provides a special-shaped tube fin evaporator, includes fore-stock (1), after-poppet (2), sets up a plurality of fins (3) between fore-stock (1) and after-poppet (2), runs through heat exchange coil (4) of fore-stock (1), fin (3), after-poppet (2) in proper order, its characterized in that:

the cross section of the heat exchange coil (4) is oval, the tube penetrating holes (5) matched with the heat exchange coil (4) are formed in the front support (1), the rear support (2) and the fins (3), and the heat exchange coil (4) is in interference fit with the tube penetrating holes (5).

2. A shaped tube finned evaporator according to claim 1 wherein the heat exchange coil (4) is a serpentine tube structure formed by a number of U-shaped tubes arranged and connected in series.

3. A profiled tube fin evaporator according to claim 2, wherein said U-shaped tubes comprise two straight tubes (401), one end of said two straight tubes (401) being connected by an elbow (402), and said U-shaped tubes being connected in series by elbows (402) to form a complete circuit.

4. A profiled-tube finned evaporator according to claim 3, characterized in that the through-going holes (5) are kidney-shaped holes, the size of which matches the cross-section of the U-tubes of the heat exchange coil (4).

5. A profiled tube finned evaporator according to claim 4, characterized in that the fins (3) are arranged evenly along the heat exchange coil (4) and the spacing between each fin (3) is 5-10 mm.

6. A profiled-tube fin evaporator according to claim 2, characterised in that the heat exchange coil (4) is a whole tube folded by stacking.

7. A profiled-tube fin evaporator according to any one of claims 1 to 6, characterised in that the fins (3) are of flat plate construction.

8. A profiled tube fin evaporator according to any one of claims 1 to 6, characterised in that the fins (3) are of the corrugated plate structure.

9. A refrigerator characterized by having the shaped tube fin evaporator according to any one of claims 1 to 8.

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