CN211400384U

CN211400384U - Integrated small-channel light tube heat exchanger and refrigeration appliance

Info

Publication number: CN211400384U
Application number: CN201920906373.3U
Authority: CN
Inventors: 赵泽玉
Original assignee: Zhejiang Yifei Technology Co ltd
Current assignee: Zhejiang Yifei Technology Co ltd
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-09-01
Anticipated expiration: 2029-06-17

Abstract

The utility model discloses an integrated small-channel light pipe heat exchanger, which comprises an inlet liquid collecting pipe for feeding refrigerant, an outlet liquid collecting pipe for outputting the refrigerant, and a radiating pipe connected between the inlet liquid collecting pipe and the outlet liquid collecting pipe to form a refrigerant flow channel; the outer diameter of the radiating pipe is 1.587 mm-3.986 mm, and the inner diameter is 1.227 mm-3.386 mm; the both ends of cooling tube interference fit respectively pass left side installation fixed plate and right side installation fixed plate fixed, just it is fixed with the heating pipe of changing the frost still to install between left side installation fixed plate and right side installation fixed plate are fixed. The heat exchanger of the utility model has small volume, occupies little space of the refrigeration appliance and improves economic benefit; the Freon filling amount is small, and the energy is saved and the environment is protected; the raw materials are used less, the manufacturing cost is saved, and the like.

Description

Integrated small-channel light tube heat exchanger and refrigeration appliance

Technical Field

The utility model belongs to the technical field of forced convection heat exchanger and specifically relates to a little fluorescent tube heat exchanger of integrated form and install refrigeration utensil of little fluorescent tube heat exchanger of integrated form.

Background

At present, heat exchangers used in household and commercial refrigeration appliances or refrigeration appliances with similar purposes (such as refrigerators, freezers, display cabinets, air conditioners and the like, the same below) mainly adopt all-aluminum tube fins, and a copper tube and aluminum fin mode is adopted for part of the heat exchangers in consideration of the use environment. The all-aluminum tube fin heat exchanger has the advantages of simple production process, good heat exchange performance, low cost and the like and is widely adopted. However, the all-aluminum tube fin heat exchanger has the following disadvantages: the heat exchanger occupies large volume of household and commercial refrigeration appliances or refrigeration appliances with similar purposes; the Freon is filled in a large amount; due to the tube-fin structure, a certain gap and a 90-degree right angle exist at each perforation of the heat exchange tube and the fin, and due to the gap and the right angle, water after defrosting of a household and commercial refrigeration appliance or a similar refrigeration appliance in use cannot smoothly drip. In the next operating cycle of domestic and commercial refrigeration appliances or similar refrigeration appliances, the water remaining in the gaps and at the 90 ° right angle will form ice residues which affect the heat exchange capacity of the heat exchanger, which also becomes the main reason why the parallel flow small (micro) channel heat exchanger can only become a condensing radiator rather than an evaporating radiator.

The small (micro) channel heat exchanger has two aspects in the heat exchange form: (1) the medium (such as refrigerant) in the small (micro) channel exchanges heat with the tube in the flowing process; (2) the small (micro) channel external medium (e.g. air) exchanges heat with the tubes during flow.

The two aspects are matched at the same time, so that the maximization of the heat exchanger efficiency can be realized, that is, the heat exchange efficiency between the internal medium (such as refrigerant) of the small (micro) channel and the tube is higher, but the heat exchange between the external medium (such as air) of the small (micro) channel and the tube is poor in the flowing process, the heat exchanged between the internal medium (such as refrigerant) of the small (micro) channel and the tube cannot be taken away, and the high efficiency of the heat exchange efficiency of the small (micro) channel cannot be realized; meanwhile, the heat exchange efficiency of the external medium (such as air) of the small (micro) channel and the pipe is very high in the flowing process, but the heat exchange efficiency of the internal medium (such as refrigerant) of the small (micro) channel and the pipe is very poor, and the high efficiency of the heat exchange efficiency of the small (micro) channel cannot be realized.

The small (micro) channel heat exchanger generally has three heat exchange modes of single-phase convection heat exchange, condensation heat exchange and boiling heat exchange in the heat exchange mechanism, and the smaller the pipe diameter is, the more prominent the heat exchange effect is obtained in the heat exchange mechanism. Although the heat exchange efficiency in the small (micro) channel is greatly improved, the outer pipe diameter of the small (micro) channel is also very small, the surface area for exchanging heat with external media (such as air and the like) is very small, and the heat exchange quantity transmitted out is related to three factors, namely a heat exchange coefficient, a temperature difference and the surface area according to the heat transfer principle. Because the surface area becomes smaller, under the condition of a certain temperature difference, a larger heat exchange coefficient is needed for exchanging a certain heat exchange amount. The heat exchange coefficient is improved only by improving the exchange rate between the outer surface of the small (micro) channel and the air under the condition that the external medium is certain.

The household and commercial refrigeration appliances or the refrigeration appliances with similar purposes generally use the fan to improve the exchange rate, and the improvement of the exchange rate can be generally realized by increasing the rotating speed of the fan and the size and the shape of the fan blade, but the increase of the fan and the fan blade can bring about the improvement of the power of the fan (the improvement of energy consumption), and brings about indirect effects of the increase of the noise of the fan, and the noise is large, so that users of the household and similar refrigeration appliances are difficult to accept.

SUMMERY OF THE UTILITY MODEL

In order to compensate the deficiency of the above all-aluminum tube fin heat exchanger, the utility model provides an integrated form microchannel light pipe heat exchanger and be equipped with the refrigeration utensil of this light pipe heat exchanger, this heat exchanger has characteristics such as small, freon charge is few, heat transfer performance is high, production simple process, saving raw and other materials, nimble changeable. The utility model discloses fully consider the produced good heat transfer effect of three kinds of heat transfer modes of single convection heat transfer, condensation heat transfer and boiling heat transfer in the little (little) passageway, fully consider the heat exchange effect of little (little) passageway outer with external medium (like air etc.) simultaneously to be fit for domestic and commercial refrigeration utensil or similar usage refrigeration utensil and use as the heat exchanger.

The utility model discloses a specific technical scheme as follows:

an integrated small channel light tube heat exchanger comprises an inlet liquid collecting tube for feeding refrigerant, an outlet liquid collecting tube for outputting the refrigerant, and a radiating tube connected between the inlet liquid collecting tube and the outlet liquid collecting tube to form a refrigerant flow channel;

the outer diameter of the radiating pipe is 1.587 mm-3.986 mm, and the inner diameter is 1.227 mm-3.386 mm; the both ends of cooling tube interference fit respectively pass left side installation fixed plate and right side installation fixed plate fixed, just it is fixed with the heating pipe of changing the frost still to install between left side installation fixed plate and right side installation fixed plate are fixed.

The heat exchanger reduces the traditional heat exchange tube with the outer diameter of 9.52-5 mm to 3.987-1.587 mm, and accordingly the material usage amount of the heat exchange tube is reduced by more than 40%, and the Freon filling amount is reduced by about one third. The heat exchange tube with the outer diameter of 5mm is reduced to the minimum allowable 1.587mm, the material usage amount of the heat exchange tube is reduced by about 50%, the Freon filling amount only needs to be half of the original amount, namely, the outer diameter of the heat exchange tube is kept within the range of 1.587 mm-3.986 mm, the material utilization rate of the heat exchange tube is reduced by 40-50% in processing and production, and the raw material cost is greatly reduced. Freon (R600a) that conventional refrigerator used belongs to inflammable and explosive article, and the reduction of charge has reduced the potential safety hazard, reduces the wasting of resources, can guarantee that the heat exchanger has high performance's refrigeration and heat transfer equally.

The heat radiation pipe is arranged between the micro-channel and the small channel, and nonferrous metal pipes such as an aluminum pipe, a copper pipe, a stainless steel pipe and the like with the pipe diameters of 1.587 mm-3.986 mm of outer diameter and 1.227 mm-3.386 mm of inner diameter are adopted.

The heat exchanger selects a proper channel inner diameter, exerts the heat exchange efficiency of three heat exchange modes of single convection heat exchange, condensation heat exchange and boiling heat exchange in the heat exchanger tube, and improves the heat exchange efficiency of the medium (such as refrigerant) in the heat exchanger and the tube; and meanwhile, the proper outer diameter of the channel is selected, so that the heat exchange efficiency of the external medium (such as air) of the small (micro) channel and the tube in the flowing process is improved. Because the external diameter will be bigger than little (little) pipe diameter (the pipe diameter increases one time, and heat transfer area increases twice), reduced the requirement to the power of fan to reduce the noise of fan, satisfied this heat exchanger can use on domestic and commercial refrigeration utensil or similar usage refrigeration utensil. The adopted pipe diameter is between the micro-channel and the small channel, and the micro-scale and small channel effect has higher heat exchange characteristic, so that the heat exchanger can achieve the purpose of heat exchange efficiency without fins.

Preferably, the radiating pipes are arranged in a plurality of layers at intervals, at least two radiating pipes are arranged in each layer, and two adjacent layers are arranged in a staggered manner in an isosceles triangle manner.

The utility model discloses a heat exchanger can carry out the staggered arrangement of cooling tube above importing and exporting the collector tube and satisfy the user demand of different products. And may be 2 or 3 or a 1 < … > N arrangement. And sleeving welding rings at two ends of the radiating pipe, wherein the sleeving depth of the welding rings is 3-5 mm. And the assembly tool is used for being inserted into the inlet and outlet liquid collecting pipe preassembling hole at one time. And welding the heat exchanger body by using a brazing furnace.

Preferably, a circuitous refrigerator flow circulation channel is formed among the plurality of layers of heat dissipation pipes.

The radiating pipe of the utility model can be a straight radiating pipe or an S-shaped radiating pipe. Wherein, the straight pipe is provided with a liquid separating stop block through the inlet liquid collecting pipe and the outlet liquid collecting pipe, so that the refrigerant in the straight pipe can flow in a circuitous and circular way. After entering from the inlet liquid collecting pipe, the refrigerant in the S-shaped radiating pipe enters the outlet liquid collecting pipe through the S-shaped radiating pipe.

Preferably, one end of the upper radiating pipe layer is connected with the outlet liquid collecting pipe, one end of the lower radiating pipe layer is connected with the inlet liquid collecting pipe, and the rest upper and lower radiating pipe layers are communicated through a bent pipe to form the S-shaped radiating pipe.

Preferably side by side, the cooling tube is straight type cooling tube, and a collector tube is equallyd divide respectively to the both ends of every layer of cooling tube, be equipped with the branch liquid dog that forms circuitous flow path in the collector tube.

Although the utility model discloses a heat exchanger need not the fin also can reach heat exchange efficiency's purpose, nevertheless does not exclude to use the further increase heat transfer area of fin to improve the heat transfer effect of this patent. Therefore, preferably, the radiating pipe is inserted with fins.

Preferably, the defrosting heating pipes correspond to the radiating pipes in number and are installed close to the corresponding radiating pipes, and a tensioning mechanism is arranged between the end of each defrosting heating pipe and the left installation fixing plate or the right installation fixing plate.

When the light pipe heat exchanger is used as a refrigerating module, the light pipe heat exchanger is more miniaturized for the overall dimension of the module, so that the storage space of a household or commercial refrigerating appliance or a refrigerating appliance with similar purposes is larger, the electric heating pipe can be used for being armored (the outermost surface of a product is additionally provided with a layer of metal protection to prevent an internal electric heating wire layer from being damaged in transportation, installation, use and operation) and is circuitous in the S-shaped heat exchange main body, the size control of the electric heating pipe in the expansion and contraction process is realized by a tensioning mechanism (such as a tensioning spring), the electric heating pipe is always in close contact with the S-shaped heat exchange main body, and the maximization of the defrosting efficiency is realized when defrosting.

Because the power of the defrosting heating pipe is inversely proportional to the resistance value under the condition of certain rated voltage, the heating wire in the defrosting heating pipe of the household and commercial refrigeration appliances or the refrigeration appliances with similar purposes is generally made of metal materials and the power is not high generally. Meanwhile, the resistance value is in direct proportion to the diameter of the electric heating wire and in inverse proportion to the length of the electric heating wire, so that the electric heating wire is suitable for household and commercial refrigeration appliances or refrigeration appliances with similar purposes, and the length is very large due to the small diameter, and the winding and roundabout can be realized in the application.

Adopt above-mentioned defrosting heating pipe and the equipment mode of this application to be in order to further improve the defrosting efficiency, but this patent does not exclude to adopt thick pipe diameter electric heating pipe, thereby carries out heat transfer through radiation, natural convection, three kinds of modes such as conduction and realize defrosting.

The utility model also provides a refrigeration utensil, inside is equipped with foretell integrated form minipassage fluorescent lamp heat exchanger.

In the refrigerating appliance, the light pipe heat exchanger can be combined with a defrosting heating pipe, a fan (comprising a centrifugal fan, an axial flow fan, a cross flow fan and the like), a defrosting heating pipe and plastic (or metal) pieces to form a refrigerating module, and meanwhile, the heat exchanger can be combined with the fan (comprising the centrifugal fan, the axial flow fan, the cross flow fan and the like) and the plastic (or metal) pieces to form a radiating module. The refrigeration module and the heat dissipation module have the characteristics of small overall dimension, high heat exchange efficiency and the like.

The refrigeration pipeline of the refrigeration module (or the heat dissipation module) can be connected with the inlet pipe and the outlet pipe of the refrigeration pipeline which are pre-embedded in the household and commercial refrigeration appliance or the refrigeration appliance with similar purposes, and the control circuit of the refrigeration module can be connected with the electric appliance control circuit of the household and commercial refrigeration appliance or the refrigeration appliance with similar purposes, so that the refrigeration module (or the heat dissipation module) becomes a part of the household and commercial refrigeration appliance or the refrigeration appliance with similar purposes, and the refrigeration or heat dissipation of the household and commercial refrigeration appliance or the refrigeration appliance with similar purposes is realized. The refrigerating module of the heat exchanger can be used for household and commercial refrigerating appliances such as single doors, double doors, multiple doors and the like or refrigerating appliances with similar purposes.

When electric heating pipe circuitous in the heat transfer main part, electric heating pipe can have the clearance between the cooling tube, also can hug closely at the cooling tube, welds the pipeline like at the cooling tube to electric heating pipe buries underground in the pipeline or electric heating pipe and cooling tube directly adopt bonding or welded mode, also can bury the motor heat pipe underground in the cooling tube.

The heat exchanger of the utility model has small volume, occupies little space of the refrigeration appliance and improves economic benefit; the Freon filling amount is small, and the energy is saved and the environment is protected; the raw materials are used less, the manufacturing cost is saved, and the like.

Drawings

FIG. 1 is a schematic structural view of an S-shaped tube radiator;

FIG. 2 is a connection diagram of the heat dissipation pipe in the S-shaped pipe radiator;

FIG. 3 is a schematic view of an I-tube heat sink;

FIG. 4 is an assembly view of the heat pipe in the I-shaped pipe radiator;

FIG. 5 is a flow chart of the production process of this example;

FIG. 6 is a graph of cooling force time versus temperature;

FIG. 7 is a schematic view of a refrigeration module of the present embodiment;

FIG. 8 is a schematic diagram of an all aluminum tube fin refrigeration module;

FIG. 9 is a simplified refrigeration module linkage;

fig. 10 is a schematic view of a circuitous arrangement of an electric heating tube and a heat exchange main body.

Detailed Description

The present invention will be described in detail with reference to the following examples and drawings, but the present invention is not limited thereto.

Example 1

An integrated small-channel light tube heat exchanger comprises a radiating tube, an inlet liquid collecting tube, an outlet liquid collecting tube, a left mounting fixing plate, a right mounting fixing plate, a defrosting heating tube and the like. The inlet end of the radiating pipe (refrigerant) is connected with the inlet liquid collecting pipe, and the outlet end of the radiating pipe (refrigerant) is connected with the outlet liquid collecting pipe to form a circulating flow channel (refrigerant). The radiating tube is in interference fit with the left mounting fixing plate and the right mounting fixing plate, and holes and fixing holes for mounting and fixing the heating tube are formed in the left mounting fixing plate and the right mounting fixing plate, so that the radiating tube is assembled with the electric heating tube and the heat exchanger is mounted and fixed.

The S-shaped pipe radiator shown in fig. 1 and 2 includes an inlet header 101, an outlet header 102, a radiating pipe body 103, a left mounting fixing plate 104 and a right mounting fixing plate 105. The heat dissipation tube main body 103 is composed of a plurality of layers of heat dissipation tubes, the two ends of the upper and lower layers of heat dissipation tubes are communicated through bent tubes, and the two adjacent layers are arranged in a staggered manner in an isosceles triangle manner to form an S-shaped heat dissipation tube 106, and a refrigerant roundabout flow channel is formed between the inlet header pipe 101 and the outlet header pipe 102.

The I-tube radiator (straight tube radiator) shown in fig. 3 and 4 includes a radiating tube main body 301, a left header 302, a right header 303, a liquid separating baffle 304, a liquid inlet pipe 305, a liquid outlet pipe 306 and a fixing plate 307. The radiating tube main body 301 is composed of a plurality of layers of straight tubes, the two ends of each radiating tube are respectively communicated with the left liquid collecting tube 302 and the right liquid collecting tube 303, liquid separating baffles 304 are arranged in the left liquid collecting tube 302 and the right liquid collecting tube 303, and a refrigerant roundabout flow channel is formed in the radiating tube main body 301 with multiple layers. The refrigerant enters from the inlet pipe 305, flows around the heat pipe body 301, and is discharged from the outlet pipe 306, thereby circulating. The upper and lower layers of heat pipes in the heat pipe main body 301 are arranged in an isosceles triangle staggered manner 308.

As shown in fig. 5, the specific steps for manufacturing the middle integrated type mini-channel light pipe heat exchanger of the present invention are as follows:

(1) after unreeling the coil pipe raw material, straightening and processing the coil pipe raw material through full-automatic roller type round pipe straightening and cutting equipment, wherein the straightening and processing mode is cold processing, and the straightening speed is 15-60 m/min;

(2) on the basis of the step (1), bending and forming raw materials by adopting full-automatic pipe bending equipment, wherein the bending angle is 90 degrees or 180 degrees, the elliptic curvature of the bent pipeline is 3-8 percent, and the surface roughness Ra of the bent pipeline is less than or equal to 1.6-3.2 mm to form an S-shaped pipe body;

(3) the left and right fixed guard boards are punched in an isosceles triangle shape by adopting a plate with the thickness of 0.5-1 mm, and are folded to form a semi-finished product,

(4) A pipe with the outer diameter of 10-20 mm and the wall thickness of 0.5-1 mm is used for processing the inlet and outlet liquid collecting pipes. Blanking the liquid collecting pipe according to the required length of a product, punching holes (the punching holes are arranged in a staggered manner according to an isosceles triangle), and sealing two ends of the liquid collecting pipe into a liquid collecting pipe body in a machining manner;

(5) and (4) assembling the heat dissipation pipe body in the step (1) and the step (3) by the tool, and installing and fixing the guard plates left and right. Frock rigging equipment is assembly jig, cylinder clamping device, manipulator I, manipulator II and fixed working platform, with the assembly jig die sinking, and the fixed backplate of installation is put into the assembly jig about I centre gripping of manipulator, and cylinder clamping device starts to press from both sides tightly, and the quantity that the fixed backplate of installation was punched a hole in advance about manipulator II is according to. The heat dissipation main body is assembled by inserting the N heat dissipation pipe bodies through the positioning device at one time,

(6) sleeving a welding ring by a tool on the basis of the step (5), wherein the sleeving depth of the welding ring is 3-5 mm;

(7) assembling a liquid inlet pipe and a liquid outlet pipe on the basis of the step (6), wherein the assembling depth is until the assembling liquid is attached to a welding ring;

(8) the automatic brazing equipment finishes welding, the welding time is 5-20 minutes, and the welding temperature is 410-480 ℃.

In the S-shaped pipe radiator and the I-shaped pipe radiator in this embodiment, the outer diameter of a single radiating pipe is 1.587mm to 3.986mm, and the inner diameter is 1.227mm to 3.386 mm. Compared with the prior art, the method has the following advantages:

1. material saving: according to the embodiment, the traditional heat exchange tube with the outer diameter of 9.52-5 mm is reduced to 3.986-1.587 mm, and the material usage amount of the heat exchange tube is reduced by more than 40%. The heat exchange tube with the outer diameter of 5mm is reduced to the minimum allowable outer diameter of 1.587mm, and accordingly the material usage amount of the heat exchange tube is reduced by about 50%. So that:

refrigerant charge reduction: because the heat exchange pipe diameter is reduced, the refrigerant charge is reduced by about one third. The heat exchange tube with the outer diameter of 5mm is reduced to the minimum allowable 1.587mm, the refrigerant filling amount only needs half of the original amount, the refrigerant used by the conventional refrigerator is R600a, the conventional refrigerator belongs to flammable and explosive articles, and the potential safety hazard is reduced due to the reduction of the filling amount.

Defrosting extra energy consumption is reduced: because the heat exchanger material use reduces, total latent heat and sensible heat reduce for be used for heating the required energy consumption of heat exchanger main part and the cold volume that the heat exchanger main part was heated required consumption after the defrosting was finished whole reducing in the defrosting in-process, thereby the defrosting energy consumption reduces.

2. Space saving: the heat exchanger of this embodiment is comparing in the heat exchanger of the same heat transfer volume of tradition because heat exchange efficiency is higher, and main appearance volume descends 30 ~ 60%, thereby:

the storage space is enlarged: compared with the traditional heat exchanger with the same heat exchange amount, the heat exchanger has the advantages that the volume occupied by the air duct can be reduced due to the reduction of the overall dimension of the heat exchanger, and the partial volume is used for food storage of household and commercial refrigeration appliances or refrigeration appliances with similar purposes.

Defrosting extra energy consumption is reduced: compared with the traditional heat exchanger with the same heat exchange quantity, the heat exchanger has the advantages that the occupied space is reduced, the energy consumption for heating the occupied space in the defrosting process and the energy consumption for refrigerating the occupied space after defrosting are reduced, and therefore the defrosting energy consumption is low.

3. Optimizing the heat exchange efficiency: the heat exchange efficiency of this patent heat exchanger obtains showing the promotion, and the performance contrast test is done with full aluminium tube fin heat exchanger to the integrated form small passage light pipe heat exchanger of this patent on certain brand 267L refrigerator.

3.1, the main differences are:

a heat exchanger: specification of the all-aluminum tube fin heat exchanger: width 396 and height 286, 60(mm) thick, weight 583 g; the utility model discloses heat exchanger specification: width 286, height 180, thickness 32(mm), weight 257 g;

aiming at the difference of defrosting of the heat exchanger, the defrosting control mode is changed;

filling amount: an all-aluminum tube-fin heat exchanger, wherein the refrigerant R600a is charged by 60 g; the utility model discloses a heat exchanger, refrigerant R600a charge 32 g;

a fan: the all-aluminum tube fin type heat exchanger, the centrifugal fan, the power 2W; the heat exchanger of the embodiment is a cross-flow fan with the power of 2W;

the refrigeration module is a component which is composed of a heat exchanger, a defrosting heating pipe, a fan and materials (such as parts formed by metal or plastic) required by forming an air duct: the overall dimension of the refrigeration module corresponding to the all-aluminum tube fin heat exchanger is as follows: 426 × 399 × 63(mm), the external dimensions of the refrigeration module corresponding to the heat exchanger of the present embodiment: 286 by 230 by 35 (mm).

Key core parts of the refrigeration appliances such as the rest compressors, the condensing heat exchangers, the defrosting heating pipes and the like are kept unchanged.

3.2, a test method:

the following comparative test of cooling power and power consumption was carried out according to the domestic refrigerator and freezer experimental standard GB/T8059-2016:

the cooling force is finally consistent from the data, but the cooling force time and temperature change relation (as shown in figure 6) shows that the cooling rate of the heat exchanger is faster than that of the all-aluminum tube fin heat exchanger. From the power consumption test result, the utility model discloses the heat exchanger will be energy-conserving 5.4% than full aluminum tube fin heat exchanger.

Example 2

As shown in fig. 7, the refrigeration module using the light pipe heat exchanger in this embodiment includes a cross-flow fan 701, a fan power line 702, a heat exchanger outlet connection pipe 704, a light pipe heat exchanger 703, a heat exchanger inlet connection pipe 705, a defrosting power line 706, a defrosting heating pipe 708, and an air duct assembly 707. The light pipe heat exchanger 703 is a heat exchanger body in the above embodiment, and the refrigerant circulates in the light pipe heat exchanger 703 through the heat exchanger outlet connection pipe 704 and the heat exchanger inlet connection pipe 705. The defrosting heating pipe 708 is installed below the light pipe heat exchanger 703.

As shown in fig. 8, it is a refrigeration module diagram of an all-aluminum finned tube heat exchanger, which includes a centrifugal fan 801, an all-aluminum finned tube heat exchanger 802 and a defrosting heating tube 802. The all-aluminum finned tube heat exchanger 802 is an S-tube radiator with fins.

As shown in fig. 9, a refrigeration device 901 in this embodiment is provided with a refrigeration module 902 with a light pipe heat exchanger, and power is supplied to a fan and a defrosting heating pipe in the refrigeration module 902 through a fan power line 903 and a defrosting power line, respectively. The refrigeration module outlet 905 and refrigeration module inlet 906 are used to input and output refrigerant, respectively, to and from the refrigeration module 902.

Fig. 10 is a structural diagram of a light pipe heat exchanger, which includes an S-shaped heat exchanger main body 1001, an electric heating tube (defrosting heating tube) 1003 installed in the heat exchanger main body, a heating tube power line 1002 leading out for supplying power, and a tensioning mechanism 1004 such as a tensioning spring arranged between the end of the heating tube and a fixing plate.

The refrigeration device 901 in this embodiment may be a refrigerator, a freezer, an air conditioner, a cooling fan, other commercial or processed refrigeration devices, or the like.

The above description is only exemplary of the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the present invention.

Claims

1. An integrated small channel light pipe heat exchanger, characterized in that: the heat dissipation pipe is connected between the inlet liquid collection pipe and the outlet liquid collection pipe to form a refrigerant flow channel;

2. The integrated minichannel light-pipe heat exchanger of claim 1 wherein: the radiating pipes are arranged in a plurality of layers at intervals, at least two radiating pipes are arranged on each layer, and two adjacent layers are arranged in a staggered manner in an isosceles triangle manner.

3. The integrated minichannel light-pipe heat exchanger of claim 2 wherein: and a circuitous refrigerator flow circulation channel is formed among the plurality of layers of radiating pipes.

4. The integrated minichannel light-pipe heat exchanger of claim 3 wherein: the one end on the heat dissipation pipe layer on upper portion is connected the export collector tube, the one end on the heat dissipation pipe layer on lower portion is connected the import collector tube, all the other upper and lower heat dissipation pipe layers are communicated through the return bend, form S type cooling tube.

5. The integrated minichannel light-pipe heat exchanger of claim 3 wherein: the radiating tube is straight type radiating tube, and a collector tube is equallyd divide respectively to the both ends of every layer of radiating tube, be equipped with the branch liquid dog that forms circuitous flow path in the collector tube.

6. The integrated small channel light pipe heat exchanger as claimed in claim 4 or 5, wherein: fins are inserted into the radiating pipes in a penetrating manner.

7. The integrated minichannel light-pipe heat exchanger of claim 1 wherein: the defrosting heating pipes correspond to the number of the radiating pipes and are installed by pressing close to the corresponding radiating pipes, and a tensioning mechanism is arranged between the end part of each defrosting heating pipe and the left installation fixing plate or the right installation fixing plate.

8. A refrigerator, characterized in that, the integrated small channel light pipe heat exchanger as claimed in any one of claims 1 to 7 is arranged inside.