CN220669826U - Cold accumulation type evaporator for refrigerator - Google Patents
Cold accumulation type evaporator for refrigerator Download PDFInfo
- Publication number
- CN220669826U CN220669826U CN202322253709.XU CN202322253709U CN220669826U CN 220669826 U CN220669826 U CN 220669826U CN 202322253709 U CN202322253709 U CN 202322253709U CN 220669826 U CN220669826 U CN 220669826U
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- evaporator
- collecting pipe
- fins
- collecting
- flat tube
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- 238000009825 accumulation Methods 0.000 title claims abstract description 22
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 33
- 239000011148 porous material Substances 0.000 claims abstract description 19
- 238000001704 evaporation Methods 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000011232 storage material Substances 0.000 description 12
- 238000003860 storage Methods 0.000 description 8
- 239000012782 phase change material Substances 0.000 description 6
- 239000003507 refrigerant Substances 0.000 description 6
- 238000004146 energy storage Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a cold accumulation type evaporator for a refrigerator, which comprises a left collecting pipe and a right collecting pipe, and is characterized in that a single-row or double-row relieved tooth microchannel flat pipe is arranged between the left collecting pipe and the right collecting pipe, and a plurality of relieved tooth microchannel flat pipes are arranged in parallel in each row; the end part of the collecting pipe is provided with an inlet end connected with the evaporator and an inlet end connected with the evaporator; the relieved tooth microchannel flat tube comprises an aluminum flat tube and fins which are distributed on two surfaces of the aluminum flat tube and are of an integrated structure with the aluminum flat tube, and the aluminum flat tube is provided with a pore canal along the length direction, and the pore canal is communicated with the collecting pipe. The heat resistance between the fins and the evaporating pipes is zero, the evaporator is changed from intermittent heat exchange to continuous heat exchange, the flowing wind resistance is small, the heat exchange capacity is remarkably improved, the temperature in the refrigerator can be kept stable for a long time after power is off, and the electric energy consumption is reduced.
Description
Technical Field
The utility model relates to an evaporator technology, in particular to a cold accumulation type evaporator for a refrigerator.
Background
The efficiency improvement of the current refrigerator refrigerating system is concentrated on the improvement of the efficiency of the compressor and the heat exchanger, particularly the performance of the heat exchanger, under the technical route of the current fin penetrating technology, the heat resistance between the heat transfer fins and the evaporating pipes can not be overcome all the time, and in the state that the compressor is stopped, the evaporator immediately stops exchanging heat, the stop time of the compressor is short, and the starting electric energy consumption is large.
In the prior art, the surface of the micro-channel aluminum flat tube for the refrigerator is free of fins, and the heat exchange area is increased by inserting and welding fins between the two aluminum flat tubes. The fins are connected with the aluminum flat tubes through brazing flux, so that the heat resistance is high, and the performance of the micro-channel heat exchanger is increased due to the phenomena of cold joint, unstable welding and the like. In the refrigerator, the micro-channel heat exchanger is connected with the compressor, so that the vibration amplitude is larger, the welding requirement on the fins is higher, and the production difficulty is also higher.
The relieved tooth fins in the prior art are arranged in a symmetrical plane structure, the fully unfolded fins occupy large space, and the heat exchanger manufactured by the structure has large volume. In addition, for the basic flat tube body of the relieved tooth fin, the structural strength of the whole flat tube can be directly influenced by arranging the micro-channel in the basic flat tube body, and the prior art does not have a micro-channel optimization scheme.
Disclosure of Invention
The utility model aims to solve the problems and provide a cold accumulation type evaporator for a refrigerator, which combines the evaporator and an energy storage material to form the cold accumulation type evaporator and has the characteristics of continuous heat exchange, zero thermal resistance between a heat transfer fin and an evaporation tube, delay stabilization of the temperature in the refrigerator and the like.
The technical problems of the utility model are mainly solved by the following technical proposal: the cold accumulation type evaporator for the refrigerator comprises a left collecting pipe and a right collecting pipe, and is characterized in that a single-row or double-row relieved tooth microchannel flat pipe is arranged between the left collecting pipe and the right collecting pipe, and a plurality of relieved tooth microchannel flat pipes are arranged in parallel in each row; the end part of the collecting pipe is provided with an evaporator inlet end A and an evaporator inlet end B; the relieved tooth microchannel flat tube comprises an aluminum flat tube and fins which are distributed on two surfaces of the aluminum flat tube and are of an integrated structure with the aluminum flat tube, and the aluminum flat tube is provided with a pore canal along the length direction, and the pore canal is communicated with the collecting pipe.
In the cold accumulation type evaporator for a refrigerator, preferably, fins on two surfaces of an aluminum flat tube in a relieved tooth microchannel flat tube are arranged in a staggered manner, namely, a single fin on one surface corresponds to a vacant position between two adjacent fins on the other surface.
In the cold storage type evaporator for a refrigerator, preferably, the flat tubes of the plurality of relieved tooth micro-channels are arranged in parallel from top to bottom, and the fin pitch of each layer is gradually thickened from bottom to top.
In the aforementioned cold storage evaporator for a refrigerator, preferably, two adjacent layers of fins are arranged in a staggered manner from bottom to top in each layer of fins, that is, a single fin of the upper layer is correspondingly arranged between two adjacent fins of the lower layer.
In the cold accumulation type evaporator for a refrigerator, as an optimization, a plurality of rows of relieved tooth microchannel flat tubes are arranged between the collecting pipes on the left side and the right side, the collecting pipes are a left collecting pipe and a right collecting pipe respectively, the left collecting pipe and the right collecting pipe are also provided with a plurality of rows, wherein the end part of the left collecting pipe is provided with an evaporator inlet end A and an evaporator inlet end B, and the end part of the right collecting pipe is provided with a runner elbow.
In the foregoing cold storage type evaporator for a refrigerator, preferably, the collecting pipes are a left collecting pipe and a right collecting pipe, the end of the left collecting pipe is provided with an inlet end a connected with the evaporator, and the end of the right collecting pipe is provided with an inlet end B connected with the evaporator.
In the aforementioned cold storage type evaporator for a refrigerator, preferably, a plurality of rows of flat spade microchannel tubes are provided between the header pipes on the left and right sides, the number of straight tubes of the header pipes is equal to the number of rows of flat spade microchannel tubes, and a structural connection block is provided between the straight tubes of the header pipes.
In the cold storage type evaporator for a refrigerator, preferably, a plurality of rows of flat tubes of the tooth microchannel are arranged between collecting pipes on the left side and the right side, and adjacent fins on two adjacent rows of flat tubes of the tooth microchannel are arranged in a staggered and overlapped mode.
The heat transfer performance of the evaporator has a great influence on the efficacy of the refrigerator. The technical scheme combines the evaporator and the energy storage material to form the cold accumulation type evaporator, so that the evaporator is converted from intermittent heat exchange to continuous heat exchange in a complete period of starting/stopping of the compressor. Meanwhile, the evaporating pipe is designed into a porous relieved aluminum flat pipe, so that the thermal resistance between the heat transfer fin and the evaporating pipe is zero. Compared with the traditional refrigerator, the heat transfer performance of the evaporator is obviously improved, so that the energy-saving effect is obvious, and the electric energy consumption can be reduced by about 20%.
In this scheme, the phase transition temperature of cold-storage material is less than the indoor settlement temperature in refrigerator compartment. The refrigerator has cold accumulating material evaporator and some cold energy transferred to the phase change material and stored as latent heat and some phase change material changed from liquid state to solid state. On the contrary, when the compressor stops working, the phase change material discharges the stored cold energy into the room, so that the refrigerator evaporator is converted from intermittent heat exchange to continuous heat exchange in a complete period of starting/stopping the compressor, and the heat exchange capacity is remarkably improved. The refrigerator with the cold accumulation type evaporator can keep the temperature in the refrigerator stable for a long time after power failure, thereby achieving the energy-saving effect.
The collecting pipes on the left side and the right side of the device are designed according to the number of rows of flat pipes of the relieved tooth micro-channel, and each row is provided with a plurality of flat pipes of the relieved tooth micro-channel to form an S-shaped optimal refrigerant channel route. The flat tube of the relieved tooth microchannel comprises an aluminum flat tube and fins which are distributed on two surfaces of the aluminum flat tube and are of an integral structure with the aluminum flat tube, the fins on the two surfaces of the same flat tube of the relieved tooth microchannel are arranged in a staggered manner, two adjacent layers of fins in each layer of fins are arranged in a staggered manner, and the distance between each layer of fins of each row of flat tube of the relieved tooth microchannel is gradually thickened from bottom to top, so that wind resistance is reduced, the surface of an evaporator is fully communicated with air, and heat exchange efficiency is improved.
In the device, part of pore channels in the aluminum flat tube are sealed with cold storage agent, and the pore channel structure is provided with round micro-channels and special-shaped micro-channels, so that the micro-channel flat tube with cold storage capacity is formed on the basis of increasing the strength of the aluminum flat tube.
Further, the same row of flat spade microchannel tubes in the evaporator device or different rows of flat spade microchannel tubes in the same layer are formed, and adjacent fins on two adjacent rows of flat spade microchannel tubes are staggered and overlapped to form a staggered penetration structure, so that the volume of the evaporator is greatly reduced through the staggered penetration, and meanwhile, the air is fully contacted with the evaporator, so that the aim of efficient heat exchange is fulfilled.
In addition, in the evaporator formed by the flat tubes of the multi-row relieved tooth micro-channel, the structural connecting blocks among the collecting pipe straight tubes are formed by rib plates with the same thickness as the fins, and the rib plate web plates are provided with row holes, so that the collecting pipe straight tubes form an integral body with higher structural strength, and the fins at the inner sides of the multi-row collecting pipes are in a semi-open state and are in barrier-free exchange with air.
Compared with the prior art, the utility model has the beneficial effects that: the evaporator and the energy storage material are combined to form the cold accumulation type evaporator, the evaporator is provided with the aluminum flat tube channel design of a round micro-channel and a special-shaped micro-channel and the staggered fin arrangement, so that the thermal resistance between the fins and the evaporating tube is zero, the evaporator is changed from intermittent heat exchange to continuous heat exchange, the flowing wind resistance is small, the heat exchange capability is obviously improved, the temperature stability in the refrigerator can be kept for a long time after power is off, and the electric energy consumption is reduced.
Drawings
Fig. 1 is a schematic view of a structure of the present utility model.
Fig. 2 is a front view of the present utility model.
Fig. 3 is a top view of fig. 2.
Fig. 4 is a schematic view of a flat tube structure of a relieved tooth microchannel of the present utility model.
Fig. 5 is a schematic view of a partially enlarged structure at M in fig. 4.
FIG. 6 is a schematic diagram of a single row tooth microchannel flat tube evaporator of the present utility model.
In the figure: 1. the left collecting pipe is connected with the inlet end A of the evaporator, the inlet end 102 of the evaporator, the inlet end B of the evaporator, the flat pipes of the tooth-shaped microchannel, the front flat pipes, the rear flat pipes, the right collecting pipe and the flow passage elbow.
Detailed Description
The technical scheme of the utility model is further specifically described below through examples and with reference to the accompanying drawings.
The cold accumulation type evaporator for the refrigerator is shown in fig. 1, and comprises collecting pipes arranged on the left side and the right side, namely a left collecting pipe 1 and a right collecting pipe 3, wherein a single row or a plurality of rows of flat shovel tooth microchannel tubes 2 are arranged between the left collecting pipe 1 and the right collecting pipe 3, and each row of flat shovel tooth microchannel tubes 2 are arranged.
The end part of the collecting pipe is provided with an evaporator inlet end A101 and an evaporator inlet end B102; the relieved tooth microchannel flat tube 2 comprises an aluminum flat tube and fins which are distributed on two surfaces of the aluminum flat tube and are of an integrated structure with the aluminum flat tube, wherein the fins on the two surfaces of the aluminum flat tube are arranged in a staggered mode, namely, a single fin on one surface corresponds to a vacant position between two adjacent fins on the other surface, as shown in fig. 4 and 5, the aluminum flat tube is provided with a pore canal along the length direction, the pore canal is communicated with a collecting pipe, and part of pore canals are sealed with a cold storage agent. The pore canal of the aluminum flat tube in the relieved tooth microchannel flat tube 2 comprises a refrigerant flow passage 2a and a cold storage agent filling cavity 2b; the refrigerant flow passage is provided with a special-shaped pore canal, such as a square hole, and the cold storage agent filling cavity is provided with a circular pore canal. The round pore canal and the special-shaped pore canal are arranged at intervals, the round pore canal is arranged at two sides of the width of the aluminum flat pipe, and one round pore canal is arranged at each interval of two special-shaped pore canals at the middle part, so that the cold storage agent is uniformly distributed in the aluminum flat pipe.
An S-shaped refrigerant walking route is formed by collecting pipes and the tooth microchannel flat pipes 2.
The overall arrangement method of the relieved tooth microchannel flat tube 2 is as follows: each row of the plurality of relieved tooth microchannel flat tubes 2 are arranged in parallel from top to bottom, and the distance between each layer of fins is gradually thickened from bottom to top; and in each layer of fins from bottom to top, two adjacent layers of fins are arranged in a staggered manner, namely, a single fin of the upper layer is correspondingly arranged between two adjacent fins of the lower layer.
When the plurality of rows of relieved tooth micro-channel flat pipes 2 are arranged between the collecting pipes on the left side and the right side, the number of straight pipes of the collecting pipes is equal to the number of rows of relieved tooth micro-channel flat pipes 2, and structural connecting blocks are arranged between the straight pipes of the collecting pipes.
Embodiment one: cold-storage evaporator for double-row relieved tooth micro-channel flat tube 2 refrigerator
Two rows of flat shovel tooth micro-channel pipes 2 are arranged between the collecting pipes on the left side and the right side, and 5 layers of flat shovel tooth micro-channel pipes 2 are arranged in parallel in each row, as shown in fig. 2, wherein two rows of flat shovel tooth pipes 201 and flat shovel tooth pipes 202 on the front row are also respectively arranged on the left collecting pipe 1 and the right collecting pipe 3. The spacing of each layer of fins of the flat tubes 2 of the microchannel of the same row of relieved teeth is gradually thickened from bottom to top. Adjacent fins on adjacent two rows of relieved tooth microchannel flat tubes 2 are arranged in a staggered and overlapped mode, as shown in fig. 3. The two rows of collecting pipes are connected into a whole through a structural connecting block. The two nozzles at the upper end of the left collecting pipe 1 are respectively provided with an evaporator inlet end A101 and an evaporator inlet end B102, as shown in FIG. 1, the two nozzles at the upper end of the right collecting pipe 3 are closed, and the two pipes at the lower end of the right collecting pipe 3 are connected through a flow passage elbow 301. Meanwhile, the inside of the left collecting pipe 1 and the inside of the right collecting pipe 3 are separated according to an S-shaped refrigerant walking route.
Embodiment two: cold-storage evaporator for single-row relieved tooth microchannel flat tube 2 refrigerator
As shown in FIG. 6, a single row of flat shovel tooth microchannel tubes 2 are arranged between collecting pipes on the left side and the right side, 5 layers of flat shovel tooth microchannel tubes 2 are arranged in parallel from top to bottom, the distance between each layer of fins of each layer of flat shovel tooth microchannel tubes 2 from bottom to top is gradually thickened, and two adjacent layers of fins are also arranged in a staggered manner. The upper end of the left collecting pipe 1 is provided with an inlet end A101 connected with an evaporator, the lower end of the left collecting pipe 1 is closed, the lower end of the right collecting pipe 3 is provided with an inlet end B102 connected with the evaporator, and the upper end of the right collecting pipe 3 is closed. Meanwhile, the inside of the left collecting pipe 1 and the inside of the right collecting pipe 3 are separated according to an S-shaped refrigerant walking route.
Working principle: in the embodiment, the evaporator and the energy storage material are combined to form the cold accumulation type evaporator, so that the evaporator is converted from intermittent heat exchange to continuous heat exchange in a complete period of starting/stopping the compressor. Meanwhile, the porous relieved tooth micro-channel flat tube 2 ensures that the thermal resistance between the heat transfer fin and the evaporating tube (aluminum flat tube) is zero. The heat transfer performance of the evaporator is obviously improved, so that the refrigerator has obvious energy-saving effect, and experiments and application show that the electric energy consumption can be reduced by about 20 percent. Because the phase change temperature of the cold storage material is lower than the indoor set temperature of the refrigerator compartment, the refrigerator provided with the cold storage material evaporator has a part of cold energy transferred to the phase change material and stored as latent heat when the refrigerator compressor starts to work, and a part of the phase change material is changed from liquid state to solid state; on the contrary, when the compressor stops working, the phase change material discharges the stored cold energy into the room, so that the refrigerator evaporator is converted from intermittent heat exchange to continuous heat exchange in a complete period of starting/stopping of the compressor, the heat exchange capacity is obviously improved, and meanwhile, the temperature in the refrigerator can be kept stable for a long time after the power is off.
The above embodiments are illustrative of the present utility model, and not limiting, and any simple transformed structure of the present utility model and the like fall within the scope of the present utility model in the technical field without departing from the principle of the present utility model.
Claims (8)
1. The cold accumulation type evaporator for the refrigerator comprises a left collecting pipe (1) and a right collecting pipe (3), and is characterized in that a single-row or double-row shovel tooth microchannel flat pipe (2) is arranged between the left collecting pipe (1) and the right collecting pipe (3), and a plurality of shovel tooth microchannel flat pipes are arranged in parallel in each row; the end part of the collecting pipe is provided with an evaporator inlet end A (101) and an evaporator inlet end B (102); the relieved tooth microchannel flat tube comprises an aluminum flat tube and fins which are distributed on two surfaces of the aluminum flat tube and are of an integrated structure with the aluminum flat tube, and the aluminum flat tube is provided with a pore canal along the length direction, and the pore canal is communicated with the collecting pipe.
2. The cold accumulation evaporator for refrigerators as claimed in claim 1, wherein the fins on both surfaces of the aluminum flat tube in the relieved tooth microchannel flat tube (2) are arranged in a staggered manner, that is, a single fin on one surface corresponds to a vacant position between two adjacent fins on the other surface.
3. The cold accumulation type evaporator for the refrigerator according to claim 1, wherein the flat tubes (2) of the plurality of shovel teeth are arranged in parallel from top to bottom, and the fin spacing of each layer is gradually thickened from bottom to top.
4. A cold accumulation type evaporator for a refrigerator according to claim 3 wherein, in each layer of fins from the bottom to the top, the adjacent two layers of fins are arranged in a staggered manner, namely, the single fin of the upper layer is correspondingly arranged between the adjacent two fins of the next layer.
5. The cold accumulation type evaporator for a refrigerator according to claim 1, wherein a plurality of rows of relieved tooth micro-channel flat tubes (2) are arranged between the collecting tubes on the left side and the right side, namely a left collecting tube (1) and a right collecting tube (3), the left collecting tube and the right collecting tube are also provided with a plurality of rows, the end part of the left collecting tube is provided with an evaporator inlet end A (101) and an evaporator inlet end B (102), and the end part of the right collecting tube is provided with a flow passage elbow (301).
6. The cold accumulation type evaporator for a refrigerator according to claim 1, wherein the collecting pipes are a left collecting pipe (1) and a right collecting pipe (3), the end part of the left collecting pipe is provided with an evaporator inlet end A (101), and the end part of the right collecting pipe is provided with an evaporator inlet end B (102).
7. The cold accumulation type evaporator for a refrigerator according to claim 1, wherein a plurality of rows of relieved tooth micro-channel flat tubes (2) are arranged between collecting pipes on the left side and the right side, the number of straight tubes of the collecting pipes is equal to the number of rows of relieved tooth micro-channel flat tubes, and a structural connecting block is arranged between the straight tubes of the collecting pipes.
8. The cold accumulation type evaporator for refrigerators according to claim 1, 5 or 7, wherein a plurality of rows of relieved tooth micro-channel flat tubes (2) are arranged between collecting pipes on the left side and the right side, and adjacent fins on two adjacent rows of relieved tooth micro-channel flat tubes are arranged in a staggered and overlapped mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322253709.XU CN220669826U (en) | 2023-08-18 | 2023-08-18 | Cold accumulation type evaporator for refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322253709.XU CN220669826U (en) | 2023-08-18 | 2023-08-18 | Cold accumulation type evaporator for refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220669826U true CN220669826U (en) | 2024-03-26 |
Family
ID=90353939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322253709.XU Active CN220669826U (en) | 2023-08-18 | 2023-08-18 | Cold accumulation type evaporator for refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220669826U (en) |
-
2023
- 2023-08-18 CN CN202322253709.XU patent/CN220669826U/en active Active
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