CN211716924U - Fin evaporator for air-cooled frost-free refrigerator - Google Patents
Fin evaporator for air-cooled frost-free refrigerator Download PDFInfo
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- CN211716924U CN211716924U CN202020247886.0U CN202020247886U CN211716924U CN 211716924 U CN211716924 U CN 211716924U CN 202020247886 U CN202020247886 U CN 202020247886U CN 211716924 U CN211716924 U CN 211716924U
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Abstract
The utility model discloses a fin evaporator for an air-cooled frostless refrigerator, which comprises a left end plate, a right end plate and a coiled pipe, wherein a plurality of through holes are respectively arranged on the left end plate and the right end plate, the coiled pipe passes through the through holes on the left end plate and the right end plate and is bent and coiled between the left end plate and the right end plate, and fins are arranged on the coiled pipe between the left end plate and the right end plate; the left end plate extends upwards from the inlet pipe section and the outlet pipe section, the liquid storage tank is welded to the outlet pipe section, the air return pipe is welded to the liquid storage tank, and the liquid inlet pipe is welded to the inlet pipe section; the liquid storage tank, the coiled pipe, the left end plate and the right end plate are positioned in the same vertical plane; graphene layers are attached to the surfaces of the coiled pipe, the fins, the liquid storage tank, the left end plate and the right end plate. The utility model discloses heat transfer efficiency is higher, and it is even to frost from top to bottom, and effective refrigerating capacity is great, can reduce the refrigerating system's of refrigerator consumption, and compact structure is convenient for install simultaneously.
Description
Technical Field
The utility model belongs to the technical field of the refrigerator technique and specifically relates to a fin evaporator.
Background
The traditional air-cooled refrigerator evaporator is characterized in that an aluminum pipe (refrigerant pipeline) is coiled into a serpentine bend, an aluminum fin is sleeved outside the aluminum pipe, the heat exchange area is increased through the fin, the cold energy of the refrigerant inside the pipeline is firstly transmitted to the outer surface of the pipeline and the surface of the fin sleeved outside the pipeline through heat conduction during refrigeration, the outer surface of the pipeline and the surface of the fin sleeved outside the pipeline are contacted with circulating air in a refrigerator chamber to absorb heat, and the purpose of refrigerating the circulating air is achieved. The circulating air absorbs the energy of the food or articles in the refrigerating space again to achieve the purpose of cooling the food. Since the thermal conductivity of aluminum is 238W/(m.k), the thermal conductivity is general, and therefore the efficiency of the entire heat exchanger is not very high.
The liquid storage tanks are usually arranged at the front side and the rear side of the evaporator and are not in the same plane with the evaporator, so that the overall thickness of the evaporator is increased; meanwhile, the evaporator is thick, and the liquid storage tank and the evaporator cannot be installed in the refrigerator compartment at the same time. And part of refrigerant in the liquid storage tank is evaporated and absorbs heat, and the cold energy of the part of refrigerant is ineffective refrigeration and is not effectively utilized.
In the air-cooled refrigerator, the air passing through the evaporator is blown from bottom to top, so the frosting on the lower part of the evaporator is the most serious, the frosting on the upper part is the lightest, the frosting on the upper part and the lower part of the evaporator is uneven, and the overall heat transfer efficiency of the evaporator is reduced.
The air-cooled refrigerator evaporator includes a serpentine tube as a refrigerant line, a left end plate and a right end plate, which are generally symmetrically disposed. The existing left end plate and the right end plate are not provided with a structure which is convenient for bending the coiled pipe, so that the arrangement of an inlet pipeline and an outlet pipeline is not convenient. The existing left end plate and the right end plate are not provided with structures for mounting electric heaters, so that the whole air-cooled refrigerator is inconvenient to assemble.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fin evaporator for air-cooled frostless refrigerator that heat transfer efficiency is higher, the structure is comparatively compact, effective refrigerating capacity is great.
In order to achieve the purpose, the fin evaporator for the air-cooled frostless refrigerator comprises a left end plate, a right end plate and a coiled pipe used as a refrigerant pipeline, wherein a plurality of through holes used for the coiled pipe to pass through are respectively arranged on the left end plate and the right end plate;
the inlet pipe section and the outlet pipe section are both positioned at the left end plate and extend upwards out of the left end plate, the outlet pipe section is welded with the liquid storage tank and communicated with the liquid storage tank, the liquid storage tank is welded with the air return pipe and communicated with the air return pipe, and the inlet pipe section is welded with the liquid inlet pipe; the liquid storage tank, the coiled pipe, the left end plate and the right end plate are positioned in the same vertical plane, and when the liquid storage tank, the coiled pipe, the fins, the left end plate and the right end plate are all positioned in a compartment of the air-cooled refrigerator;
graphene layers are attached to the surfaces of the coiled pipe, the fins, the liquid storage tank, the left end plate and the right end plate.
The fins comprise short fins, middle fins and long fins, and the short fins, the middle fins and the long fins are uniformly distributed and alternately arranged; the heights of the top ends of the short fins, the middle fins and the long fins are the same, the bottom ends of the short fins are located at the upper middle part in the vertical direction of the coiled pipe, the bottom ends of the middle fins are located at the lower middle part in the vertical direction of the coiled pipe, and the bottom ends of the long fins are located at the bottom in the vertical direction of the coiled pipe.
The top of the left end plate and the top of the right end plate are symmetrically provided with upper grooves for conveniently bending the coiled pipe.
The bottoms of the left end plate and the right end plate are symmetrically provided with elongated holes for installing electric heating pipes.
And a through groove is formed between the elongated hole and the bottom ends of the left end plate and the right end plate.
The thickness of the left end plate and the right end plate is larger than that of the fins.
The top of left end plate and right end plate all is connected with and is used for installing the mounting panel on the forced air cooling refrigerator, is equipped with the mounting hole on the mounting panel.
The utility model discloses have following advantage:
the utility model discloses heat transfer efficiency is higher, and it is even to frost from top to bottom, and effective refrigerating capacity is great, can reduce the refrigerating system's of refrigerator consumption, and compact structure is convenient for install simultaneously.
Graphite alkene layer has all been adhered to on coiled pipe surface, fin surface, liquid storage pot surface, left end board surface and right-hand member board surface, can improve the whole heat exchange efficiency of evaporimeter by a relatively large margin. The liquid storage tank, the coiled pipe, the left end plate and the right end plate are located in the same vertical plane, and the thicknesses of the liquid storage tank, the coiled pipe, the fins and the like are not overlapped any more, so that the overall thickness of the evaporator is obviously reduced.
The refrigerant can not be evaporated by 100% in the serpentine pipe, and a part of the refrigerant is evaporated in the liquid storage tank, so that the surface temperature of the liquid storage tank is low, and the refrigerant can be used for providing cold energy to the outside; even if the refrigerant is completely evaporated in the coiled pipe, the temperature of the evaporated refrigerant is very low, so that the surface temperature of the liquid storage tank is very low, and the liquid storage tank can be used for providing cold energy to the outside.
Liquid storage pot, coiled pipe, fin, left end board and right-hand member all are located the room of forced air cooling refrigerator for the cold volume that the liquid storage pot produced also can obtain effective utilization, thereby has increased the utility model discloses an effective refrigerating output.
The arrangement of the short fins, the middle fins and the long fins ensures that the density of the fins at the bottom of the evaporator is the lowest, the density of the fins in the middle of the evaporator is moderate, the fins at the upper part of the evaporator are the most dense, the heat exchange efficiency at the upper part of the evaporator is higher than that at the middle part, and the heat exchange efficiency at the middle part of the evaporator is higher than that at the bottom of the evaporator. Therefore, the phenomenon that the frosting on the lower part of the traditional evaporator is the most serious, the frosting on the upper part is the lightest and the frosting is lighter and lighter from bottom to top in the vertical direction is corrected.
The bottom of the evaporator is most prone to frosting, and the heat exchange efficiency is lowest in the utility model; in the past, the frosting at the top of the evaporator is minimum, and the heat exchange efficiency of the utility model is highest. In a word, the utility model discloses make the everywhere heat exchange efficiency of evaporimeter and the condition of frosting suit for the evaporimeter is frosted the condition about everywhere and is tend to unanimously, has improved the heat exchange efficiency of evaporimeter on the whole, avoids frosting more in the past and concentrates on the phenomenon of evaporimeter bottom.
The serpentine pipe of being convenient for bend is convenient for to the setting of upper groove the assembly of being convenient for the utility model discloses, can make the evaporimeter compacter.
A defrosting structure is also needed to be arranged in the air-cooled refrigerator, and an electric heating pipe is a main defrosting component. The arrangement of the elongated hole is convenient for fixing and installing the electric heating pipe, so that the electric heating pipe and the evaporator form an integrated structure.
The through groove is used as an inlet of the elongated hole. When the electric heating pipe is installed in the elongated hole, the left end plate and the right end plate can be broken off at the through groove, so that the inlet of the elongated hole is enlarged, and the electric heating pipe is very convenient to install in the elongated hole from the through groove. After the packaging, the left end plate and the right end plate at the through groove deformed by being broken off are restored.
Aluminum pipes are mostly adopted for refrigerant pipelines, and the heat conductivity of aluminum is 238W/(m.K), and the heat conductivity coefficient is general, so that the efficiency of the whole heat exchanger is not high in the past. The utility model discloses in, coiled pipe surface, fin surface, liquid storage pot surface, left end board surface and right-hand member board surface all have graphite alkene layer in order to dip in, the spraying is attached to in technologies such as growth, and coefficient of heat conductivity can reach 600W/(m.K), is 2 ~ 3 times of aluminium coefficient of heat conductivity, consequently can show the heat transfer coefficient who increases the evaporimeter. When being used for the forced air cooling refrigerator on, because heat transfer volume Q is K A Δ t that x, K is heat transfer coefficient, and A is heat transfer area, and Δ t is the heat transfer difference in temperature, and the same heat transfer volume can effectively reduce the heat transfer difference in temperature because heat transfer coefficient promotes under the unchangeable condition of heat transfer area, promotes evaporating temperature, and evaporating temperature's promotion can directly reduce the consumption of compressor, reaches energy saving and emission reduction's purpose.
In the past, the inlet pipe section and the outlet pipe section of the evaporator do not extend out in the same direction, so that pipeline connection needs to be carried out in two directions (positions), and the evaporator is inconvenient to install and not compact enough in structure. The utility model discloses in, import pipeline section and export pipeline section all upwards extend the left end board, compare in the past, only carry out the tube coupling in a position, have not only made things convenient for the tube coupling, make overall structure compacter moreover.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a schematic structural view of the left endplate;
fig. 4 is a left side view of fig. 3.
Detailed Description
As shown in fig. 1 to 4, the fin evaporator for an air-cooled frostless refrigerator of the present invention comprises a left end plate 1, a right end plate 2 and a coiled pipe 3 as a refrigerant pipeline, wherein a plurality of inclined through holes 18 for the coiled pipe 3 to pass through are respectively arranged on the left end plate 1 and the right end plate 2, the coiled pipe 3 passes through the through holes on the left end plate 1 and the right end plate 2 and is bent and coiled between the left end plate 1 and the right end plate 2, two end portions of the coiled pipe 3 are respectively used as an inlet pipe section 4 and an outlet pipe section 5, and fins are arranged on the coiled pipe 3 between the left end plate 1 and the right end plate 2;
the inlet pipe section 4 and the outlet pipe section 5 are both positioned at the left end plate 1 and both extend upwards out of the left end plate 1, the outlet pipe section 5 is welded with the liquid storage tank 6 and is communicated with the liquid storage tank 6, the liquid storage tank 6 is welded with the air return pipe 7 and is communicated with the air return pipe 7, and the inlet pipe section 4 is welded with the liquid inlet pipe 11; when the air-cooled refrigerator is installed on the air-cooled refrigerator, the air return pipe 7 is communicated with an air suction port of the compressor, and the liquid inlet pipe 11 is communicated with the condenser. The liquid storage tank 6, the coiled pipe 3, the left end plate 1 and the right end plate 2 are positioned in the same vertical plane, and when the liquid storage tank 6, the coiled pipe 3, the fins, the left end plate 1 and the right end plate 2 are all positioned in a compartment of the air-cooled refrigerator; graphene layers are attached to the surfaces of the coiled pipe 3, the fins, the liquid storage tank 6, the left end plate 1 and the right end plate 2 through dipping, spraying or growing.
The surfaces of the coiled pipes 3, the surfaces of the fins, the surfaces of the liquid storage tanks 6, the surfaces of the left end plate 1 and the surfaces of the right end plate 2 are all attached with graphene layers, so that the overall heat exchange efficiency of the evaporator can be greatly improved. The liquid storage tank 6, the coiled pipe 3, the left end plate 1 and the right end plate 2 are located in the same vertical plane, and the thicknesses of the liquid storage tank 6, the coiled pipe 3, the fins and the like are not overlapped any more, so that the overall thickness of the evaporator is obviously reduced.
The refrigerant can not be evaporated by 100% in the coiled pipe 3, and a part of the refrigerant is evaporated in the liquid storage tank 6, so that the surface temperature of the liquid storage tank 6 is low, and the refrigerant can be used for providing cold energy to the outside; even if the refrigerant is completely evaporated in the coiled pipe 3, the temperature of the evaporated refrigerant is very low, so that the surface temperature of the liquid storage tank 6 is very low, and the liquid storage tank can be used for providing cold energy to the outside.
The fins comprise short fins 8, middle fins 9 and long fins 10, and the short fins 8, the middle fins 9 and the long fins 10 are uniformly distributed and alternately arranged; the heights of the top ends of the short fins 8, the middle fins 9 and the long fins 10 are the same, the bottom ends of the short fins 8 are located at the upper middle part in the vertical direction of the serpentine tube 3, the bottom ends of the middle fins 9 are located at the lower middle part in the vertical direction of the serpentine tube 3, and the bottom ends of the long fins 10 are located at the bottom in the vertical direction of the serpentine tube 3.
The arrangement of the short fins 8, the middle fins 9 and the long fins 10 ensures that the density of the fins at the bottom of the evaporator is lowest, the density of the fins in the middle of the evaporator is moderate, the fins at the upper part of the evaporator are the most dense, the heat exchange efficiency at the upper part of the evaporator is higher than that at the middle part of the evaporator, and the heat exchange efficiency at the middle part of the evaporator is higher than that at the bottom of the evaporator. Therefore, the phenomenon that the frosting on the lower part of the traditional evaporator is the most serious, the frosting on the upper part is the lightest and the frosting is lighter and lighter from bottom to top in the vertical direction is corrected.
The bottom of the evaporator is most prone to frosting, and the heat exchange efficiency is lowest in the utility model; in the past, the frosting at the top of the evaporator is minimum, and the heat exchange efficiency of the utility model is highest. In a word, the utility model discloses make the everywhere heat exchange efficiency of evaporimeter and the condition of frosting suit for the evaporimeter is frosted the condition about everywhere and is tend to unanimously, has improved the heat exchange efficiency of evaporimeter on the whole, avoids frosting more in the past and concentrates on the phenomenon of evaporimeter bottom.
The top of the left end plate 1 and the right end plate 2 are symmetrically provided with upper grooves 12 for conveniently bending the coiled pipe 3.
The serpentine pipe 3 is convenient to bend by the arrangement of the upper groove 12, thereby being convenient for assembly the utility model discloses, can make the evaporator more compact
The bottoms of the left end plate 1 and the right end plate 2 are symmetrically provided with elongated holes 13 for installing electric heating pipes.
A defrosting structure is also needed to be arranged in the air-cooled refrigerator, and an electric heating pipe is a main defrosting component. The arrangement of the elongated hole 13 is convenient for fixing and installing the electric heating tube, so that the electric heating tube and the evaporator form an integrated structure.
A through groove 14 is arranged between the elongated hole 13 and the bottom ends of the left end plate 1 and the right end plate 2.
The through slots 14 serve as inlets to the elongated holes 13. When the electric heating tube is installed in the elongated hole 13, the left end plate 1 and the right end plate 2 can be broken off at the through groove 14, so that the inlet of the elongated hole 13 is enlarged, and the electric heating tube is very convenient to install in the elongated hole 13 from the through groove 14. After loading, the left and right end plates 1 and 2 at the through grooves 14 deformed by the breaking are restored.
The thickness of the left end plate 1 and the right end plate 2 is larger than that of the fins, so that the whole evaporator can be better fixed.
The top of left end board 1 and right end board 2 all is connected with and is used for installing mounting panel 15 on the forced air cooling refrigerator, is equipped with mounting hole 16 on mounting panel 15. The top of the left end plate 1 is provided with an upper elongated hole 17 for the inlet pipe section 4 and the outlet pipe section 5 to pass through and extend upwards out of the left end plate.
During the use, the utility model discloses a mounting panel 15 and mounting hole 16 are installed in the room of forced air cooling refrigerator to through muffler 7 and feed liquor pipe 11 and establish ties in the refrigerating system's of forced air cooling refrigerator pipeline, if be connected muffler 7 with the induction port of the compressor of forced air cooling refrigerator, be connected with throttling arrangement (like capillary or expansion valve) through feed liquor pipe 11. The refrigeration system may be provided with various accessories, and the above connections are illustrative of the installation location of the present invention and are not intended to be limiting. The electric heating tube of the air-cooled refrigerator is arranged at the position of the elongated hole 13 and is positioned at the bottom of the evaporator.
The above embodiments are only used for illustrating but not limiting the technical solutions of the present invention, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention may be modified or substituted with equivalents without departing from the spirit and scope of the invention, which should be construed as being limited only by the claims.
Claims (7)
1. The finned evaporator for the air-cooled frostless refrigerator comprises a left end plate, a right end plate and a coiled pipe serving as a refrigerant pipeline, wherein a plurality of through holes for the coiled pipe to pass through are formed in the left end plate and the right end plate respectively;
the method is characterized in that: the inlet pipe section and the outlet pipe section are both positioned at the left end plate and extend upwards out of the left end plate, the outlet pipe section is welded with the liquid storage tank and communicated with the liquid storage tank, the liquid storage tank is welded with the air return pipe and communicated with the air return pipe, and the inlet pipe section is welded with the liquid inlet pipe; the liquid storage tank, the coiled pipe, the left end plate and the right end plate are positioned in the same vertical plane, and when the liquid storage tank, the coiled pipe, the fins, the left end plate and the right end plate are all positioned in a compartment of the air-cooled refrigerator;
graphene layers are attached to the surfaces of the coiled pipe, the fins, the liquid storage tank, the left end plate and the right end plate.
2. The fin evaporator for an air-cooled frost-free refrigerator of claim 1, wherein: the fins comprise short fins, middle fins and long fins, and the short fins, the middle fins and the long fins are uniformly distributed and alternately arranged; the heights of the top ends of the short fins, the middle fins and the long fins are the same, the bottom ends of the short fins are located at the upper middle part in the vertical direction of the coiled pipe, the bottom ends of the middle fins are located at the lower middle part in the vertical direction of the coiled pipe, and the bottom ends of the long fins are located at the bottom in the vertical direction of the coiled pipe.
3. The fin evaporator for an air-cooled frost-free refrigerator of claim 1, wherein: the top of the left end plate and the top of the right end plate are symmetrically provided with upper grooves for conveniently bending the coiled pipe.
4. The fin evaporator for an air-cooled frost-free refrigerator of claim 1, wherein: the bottoms of the left end plate and the right end plate are symmetrically provided with elongated holes for installing electric heating pipes.
5. The finned evaporator for an air-cooled frostless refrigerator of claim 4, wherein: and a through groove is formed between the elongated hole and the bottom ends of the left end plate and the right end plate.
6. The fin evaporator for an air-cooled frost-free refrigerator of claim 5, wherein: the thickness of the left end plate and the right end plate is larger than that of the fins.
7. The fin evaporator for an air-cooled frost-free refrigerator of claim 5, wherein: the top of left end plate and right end plate all is connected with and is used for installing the mounting panel on the forced air cooling refrigerator, is equipped with the mounting hole on the mounting panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020247886.0U CN211716924U (en) | 2020-03-04 | 2020-03-04 | Fin evaporator for air-cooled frost-free refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020247886.0U CN211716924U (en) | 2020-03-04 | 2020-03-04 | Fin evaporator for air-cooled frost-free refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211716924U true CN211716924U (en) | 2020-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020247886.0U Active CN211716924U (en) | 2020-03-04 | 2020-03-04 | Fin evaporator for air-cooled frost-free refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211716924U (en) |
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2020
- 2020-03-04 CN CN202020247886.0U patent/CN211716924U/en active Active
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