Evaporator assembly and refrigeration appliance

Abstract

The utility model discloses an evaporator assembly and refrigeration equipment, evaporator assembly is used for installing in refrigeration equipment, and evaporator assembly includes two groups of evaporation pipeline that set up adjacently, a plurality of fin fixedly on every group of evaporation pipeline, heating device for heating defrosting, and heating device includes two groups of heating wire, in the thickness direction of evaporator assembly, two groups of heating wire and two groups of evaporation pipeline are alternately arranged and set, and heating wire is fixed on fin. The utility model adopts two groups of heating wire and two groups of evaporation pipeline and alternately sets, and the heat of heating wire between two groups of evaporation pipeline can conduct to the evaporation pipeline position of both sides to heat defrosting to the frost on the both sides surface of evaporator assembly, to improve the efficiency of evaporator assembly heating defrosting. And, heating wire is directly contacted with fin, and the heat of heating wire is conducted to the surface of evaporator assembly through fin.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration technology, and in particular to an evaporator assembly and refrigeration equipment. Background Technology

[0002] The refrigeration principle of refrigeration equipment mainly relies on the phase changes of the refrigerant and the cyclical operation of the compressor. In the evaporator, the refrigerant changes from a liquid to a gas, absorbing heat from the refrigeration equipment and thus lowering the internal temperature. The gaseous refrigerant is then drawn into the compressor and compressed into a high-temperature, high-pressure gas. This gas then releases heat through the condenser, gradually condensing into a liquid. This high-pressure liquid is then depressurized through a capillary tube and re-enters the evaporator to continue vaporizing and absorbing heat, forming a cyclical refrigeration process.

[0003] During the refrigeration process, the evaporator's temperature is much lower than the surrounding air temperature. Water vapor in the air easily condenses at the evaporator, leading to frost buildup on the evaporator under prolonged operation, thus affecting the normal operation of the refrigeration equipment. Therefore, current refrigeration equipment typically includes an additional heating element on the evaporator to assist in defrosting. However, the low heat transfer efficiency between the heating element and the fins in the evaporator results in poor defrosting performance. Utility Model Content

[0004] The purpose of this invention is to provide an evaporator assembly and refrigeration equipment to overcome the shortcomings of the prior art. By setting two sets of heating wires connected in the fins, the defrosting effect of the evaporator assembly is significantly improved.

[0005] To achieve one of the above objectives, this utility model provides an evaporator assembly for installation in a refrigeration device. The evaporator assembly includes two adjacent sets of evaporation pipes, a number of fins fixed at intervals on each set of evaporation pipes, and a heating device for defrosting. The heating device further includes two sets of heating wires. In the thickness direction of the evaporator assembly, the two sets of heating wires and the two sets of evaporation pipes are arranged alternately, and the heating wires are fixed on the fins.

[0006] As a further improvement of one embodiment of the present invention, the heating device further includes a bent portion for integrally connecting with the two sets of heating wires.

[0007] As a further improvement of one embodiment of the present invention, the projection of the heating device on the end face of the evaporator assembly along the height direction of the evaporator assembly is U-shaped.

[0008] As a further improvement of one embodiment of this utility model, the two sets of evaporation pipes are arranged in parallel, and the two sets of heating wires are arranged in parallel with the two sets of evaporation pipes. Along the height direction of the evaporator assembly, the two sets of heating wires cover the area where the evaporation pipes are located; or, along the height direction of the evaporator assembly, one set of heating wires located between the two sets of evaporation pipes covers the area where the evaporation pipes are located, and the other set of heating wires located on the side of one set of evaporation pipes away from the other set of evaporation pipes covers the lower area of ​​the evaporation pipes.

[0009] As a further improvement of one embodiment of the present utility model, the two sets of evaporation pipes are arranged in parallel, and the two sets of heating wires are arranged in parallel with the two sets of evaporation pipes. The two sets of evaporation pipes are respectively referred to as the first evaporation pipe and the second evaporation pipe. The fins include a first fin disposed on the first evaporation pipe and a second fin disposed on the second evaporation pipe. The first fin and the second fin are separately disposed. The two sets of heating wires are respectively referred to as the first heating wire and the second heating wire.

[0010] The first heating wire is disposed between the first evaporation pipe and the second evaporation pipe. The first heating wire is fixed on the first fin, or on the second fin, or between the first fin and the second fin, or partially disposed on the first fin and partially disposed on the second fin.

[0011] The second heating wire is disposed on the side of the first evaporation pipe opposite to the second evaporation pipe or the side of the second evaporation pipe opposite to the first evaporation pipe, and the second heating wire is fixed on the first fin or the second fin.

[0012] As a further improvement of one embodiment of the present invention, in the first fin and the second fin, the fin used to fix the heating wire is provided with a slot, the slot is open, the first fin and the second fin are in contact with each other, and the heating wire is fixed in the slot.

[0013] As a further improvement of one embodiment of this utility model, both sets of evaporation pipes extend in a serpentine bend and each includes a straight pipe arranged parallel to each other vertically and a bend connecting adjacent straight pipes. The two sets of heating wires also extend in a serpentine bend and include a straight heating wire arranged parallel to each other vertically and an arc heating wire connecting adjacent straight heating wires. In the thickness direction of the evaporator assembly, the straight heating wire is arranged opposite to the straight pipe; in the height direction of the evaporator assembly, the arc heating wire is located between two adjacent bends.

[0014] As a further improvement of one embodiment of the present invention, the evaporator assembly further includes a fixing frame respectively disposed on both sides of the width direction of the two sets of evaporation pipes, and a connecting structure connecting the fixing frame on the same side. The heating wire is fixed to the fixing frame on both sides along the width direction of the evaporator assembly. The fixing frame is provided with a fixing groove for fixing the heating wire, a snap-fit ​​wall located on both sides of the fixing groove, and a buffer groove located on the side of the snap-fit ​​wall away from the fixing groove.

[0015] As a further improvement of one embodiment of the present invention, in the height direction of the evaporator assembly, the bottom of one set of evaporation pipes is set higher than the bottom of the other set of evaporation pipes, and a set of heating wires located between the two sets of evaporation pipes includes a first part disposed above and a second part disposed below the first part.

[0016] As a further improvement of one embodiment of the present invention, in the height direction of the evaporator assembly, the heating wire extends through the area where all evaporation pipes are located, and within the height range covered by the heating wire, the heating power ratio of the upper half heating wire to the lower half heating wire is 1:2 to 1:2.5.

[0017] As a further improvement of one embodiment of this utility model, the power of the heating wire in the lower part is 50-60W.

[0018] To achieve one of the above objectives, one embodiment of the present invention provides a refrigeration device, including a housing. The housing is provided with a storage chamber and a cooling chamber spaced apart by an air duct plate. The air duct plate is provided with an air inlet and an air return outlet connecting the storage chamber and the cooling chamber. The refrigeration device also includes the aforementioned evaporator assembly, which is disposed in the cooling chamber. The air return outlet is disposed opposite to the evaporator assembly, and two sets of heating wires are respectively disposed on the side of the two sets of evaporation pipes away from the air return outlet.

[0019] Compared with existing technologies, this invention employs two sets of heating wires and two sets of evaporation pipes arranged alternately. The heat from the heating wires located between the two sets of evaporation pipes can be conducted to the evaporation pipes on both sides to defrost the frost on both sides of the evaporator assembly, thereby improving the efficiency of defrosting the evaporator assembly. Furthermore, the heating wires are in direct contact with the fins, and the heat from the heating wires is conducted to the surface of the evaporator assembly through the fins. Attached Figure Description

[0020] Figure 1 This is an isometric view of an evaporator assembly provided by this utility model;

[0021] Figure 2 yes Figure 1 Enlarged structural diagram of section A;

[0022] Figure 3 This is a side view of an evaporator assembly provided by this utility model;

[0023] Figure 4 This is a side view of an evaporator assembly in some embodiments, wherein a first heating wire is fixed to the side of a second fin facing the first fin;

[0024] Figure 5 This is a side view of an evaporator assembly in some embodiments, wherein a first heating wire is fixed to the relative position of a first fin and a second fin;

[0025] Figure 6 This is a side view of an evaporator assembly in some embodiments, wherein a portion of the first heating wire is fixed to the first fin, and another portion is fixed to the second fin;

[0026] Figure 7 This is a side view of an evaporator assembly in some embodiments, wherein the first heating wire and the second heating wire do not completely overlap;

[0027] Figure 8 These are side views of the evaporator assembly in some implementations, showing the structure of three sets of evaporation tubing and two sets of heating wires;

[0028] Figure 9 This is an isometric view of a portion of the structure of an evaporator assembly provided by this utility model, in which the heating device structure is hidden;

[0029] Figure 10 yes Figure 9 Enlarged structural diagram of section B.

[0030] Figure label:

[0031] 100. Evaporator assembly; 11. First evaporation pipe; 111. Straight pipe; 112. Bend; 12. First fin; 21. Second evaporation pipe; 22. Second fin; 31. Third evaporation pipe; 40. Heating device; 41. First heating wire; 411. Straight heating wire; 412. Arc heating wire; 42. Second heating wire; 43. Bending part; 51. Slot; 511. Clamping wall; 60. Fixing bracket; 61. Perforation; 62. Fixing groove; 63. Clamping wall; 64. Buffer groove; 70. Connection structure. Detailed Implementation

[0032] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0033] The terms used in this embodiment, such as "upper," "above," "lower," and "below," which indicate spatial relative positions, are used for ease of explanation to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms "spatial relative position" may be intended to include different orientations of the device besides those shown in the figures during use or operation. For example, in this embodiment, "upper," "lower," "left," "right," "horizontal," and "vertical" all refer to the spatial relative position of the refrigeration device under normal operating conditions.

[0034] The terms "first," "second," "third," "fourth," etc., used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Furthermore, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, a connection can be a direct connection or an indirect connection through an intermediate medium; it can be a fixed connection, a movable connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] To enable those skilled in the art to better understand the technical solution in this utility model, the evaporator assembly is defined to have a height direction (referring to the up and down direction during the use of refrigeration equipment), a width direction, and a thickness direction, with the height direction, width direction, and thickness direction being perpendicular to each other.

[0036] The following will refer to the appendix in the embodiments of this utility model. Figure 1 -10, The technical solutions in the embodiments of this utility model are clearly and completely described.

[0037] As a refrigeration unit in a refrigeration system, the evaporator has a significant impact on the overall refrigeration performance. The refrigeration process involves the refrigerant passing through the compressor, condenser, and capillary tube, entering the evaporator's evaporation pipes. The refrigerant evaporates, absorbing heat from the surrounding environment and exchanging heat with the surrounding air, thus lowering the temperature near the evaporator and achieving cooling. During operation, the evaporator surface temperature is significantly lower than the dew point of the surrounding air, causing frost to easily form on the evaporator surface, affecting its cooling efficiency. Therefore, when the frost layer on the evaporator surface reaches a certain thickness, defrosting is necessary.

[0038] One embodiment of the present invention provides an evaporator assembly 100, which can be installed in a refrigeration device or other temperature control device. In this embodiment, the evaporator is installed in a refrigeration device, which is provided with a refrigeration air duct, and the return air inlet of the refrigeration air duct faces the evaporator assembly 100.

[0039] Reference Figure 1 and Figure 2 The evaporator assembly 100 includes evaporation pipes, a heating device 40, and several fins. The evaporation pipes are arranged in two opposing sets, adjacent to each other. Several fins are arranged, and several fins are fixed at intervals on each set of evaporation pipes. The heating device 40 is used to heat and defrost the frost on the surface of the evaporator assembly 100.

[0040] The heating device 40 includes two sets of heating wires, both of which are arranged opposite to the evaporation pipes. In the thickness direction of the evaporator assembly 100, the two sets of heating wires and the two sets of evaporation pipes are arranged alternately, and the two sets of heating wires are located on the same side of the two sets of evaporation pipes.

[0041] The arrangement of two sets of evaporation tubes opposite each other, and the arrangement of the heating wire opposite to the evaporation tubes, means that the evaporation tubes and the heating wire are spaced apart, and that the evaporation tubes and the heating wire extend in approximately the same direction. Specifically, the extending planes of the evaporation tubes and the heating wire are parallel or approximately parallel.

[0042] The heat from the heating wire in the middle of the two sets of evaporation pipes can be conducted to the evaporation pipes on both sides to heat and defrost the frost on both sides of the evaporator assembly 100, thereby improving the efficiency of heating and defrosting the evaporator assembly 100.

[0043] The heating wire is fixed to the fins and is in direct contact with them. The heat from the heating wire is conducted to the surface of the evaporator assembly 100 through the fins. The heat from another set of heating wires can also be quickly conducted to the evaporator surface, enhancing the heat conduction effect of the heating device 40.

[0044] The heating device 40 also includes a bent portion 43 for integrally connecting with the two sets of heating wires. The integral connection of the two sets of heating wires allows for integrated control of the heating device 40, and the heat from the heating device 40 is applied more evenly to the evaporator assembly 100.

[0045] The heating device 40 is U-shaped in projection onto the end face of the evaporator assembly 100 along the height direction of the evaporator assembly 100. The heating wire is bent through the bending part 43, and after the heating device 40 is processed, it can be directly folded into two parallel parts, which facilitates the processing and installation of the heating wire.

[0046] In some embodiments, the two sets of heating wires are set independently, that is, the two sets of heating wires can be controlled separately, and the heating power of the two sets of heating wires can be controlled separately according to the amount of frost on the surface of the evaporator assembly 100.

[0047] The two sets of evaporation pipes are referred to as the first evaporation pipe 11 and the second evaporation pipe 21, respectively.

[0048] The fins include a first fin 12 disposed on a first evaporation pipe 11 and a second fin 22 disposed on a second evaporation pipe 21, with the first fin 12 and the second fin 22 arranged at intervals on the first evaporation pipe 11 and the second evaporation pipe 21, respectively.

[0049] In this embodiment, the first fin 12 and the second fin 22 are separate components, meaning the evaporator assembly 100 includes two separate evaporators, namely a first evaporator and a second evaporator, which are arranged opposite to each other. The two evaporators are in contact with each other to transfer heat, and the separate evaporators are easier to manufacture and assemble.

[0050] In an optional embodiment, the first fin 12 and the second fin 22 are separately arranged, and there is a small gap between the first fin 12 and the second fin 22. The gap between the first fin 12 and the second fin 22 can be controlled within 1.5 mm. The two sets of fins are arranged close together, and convection is generated between the two sets of evaporators, resulting in a better heat conduction effect.

[0051] In an optional embodiment, the first fin 12 and the second fin 22 are integrally formed, and the heating wire located between the first evaporation pipe 11 and the second evaporation pipe 21 is threaded and fixed on the fin, and another set of heating wires is fixed on one side of the fin.

[0052] The fins in the first and second evaporators can completely overlap or partially overlap in the height direction.

[0053] The two sets of heating wires are referred to as the first heating wire 41 and the second heating wire 42, respectively, and the bent part 43 is connected between the first heating wire 41 and the second heating wire 42.

[0054] The first heating wire 41 is disposed between the first evaporation pipe 11 and the second evaporation pipe 21. The first heating wire 41 is fixed on the first fin 12, or on the second fin 22, or between the first fin 12 and the second fin 22, or partially disposed on the first fin 12 and partially disposed on the second fin 22.

[0055] In some implementations, refer to Figure 3 The first heating wire 41 is fixed to the side of the first fin 12 facing the second fin 22. The heat from the first heating wire 41 is directly conducted to the first fin 12, and the heat from the first fin 12 is then conducted to the second fin 22. The heat from the first heating wire 41 can act simultaneously on the first evaporator and the second evaporator, improving the efficiency of heating and defrosting.

[0056] In some implementations, refer to Figure 4The first heating wire 41 is fixed to the side of the second fin 22 facing the first fin 12. The heat from the first heating wire 41 is directly conducted to the second fin 22, and the heat from the second fin 22 is then conducted to the first fin 12. The heat from the first heating wire 41 can act simultaneously on the first evaporator and the second evaporator, improving the efficiency of heating and defrosting.

[0057] In some implementations, refer to Figure 5 Along the thickness direction of the evaporator assembly 100, the first heating wire 41 is fixed at the opposite position of the first fin 12 and the second fin 22, and the heat of the first heating wire 41 is synchronously conducted to the first fin 12 and the second fin 22.

[0058] In some implementations, refer to Figure 6 The first heating wire 41 includes a first region located on the upper side and a second region located on the lower side. The first heating wire 41 in the first region is fixed to the side of the first fin 12 facing the second fin 22, and the first heating wire 41 in the second region is fixed to the side of the second fin 22 facing the first fin 12. Alternatively, the first heating wire 41 in the first region is fixed to the side of the second fin 22 facing the first fin 12, and the first heating wire 41 in the second region is fixed to the side of the first fin 12 facing the second fin 22.

[0059] The second heating wire 42 is disposed on the side of the first evaporation pipe 11 away from the second evaporation pipe 21 or on the side of the second evaporation pipe 21 away from the first evaporation pipe 11, and the second heating wire 42 is fixed on the first fin 12 or the second fin 22.

[0060] Along the height direction of the evaporator assembly 100, the first heating wire 41 and the second heating wire 42 may completely overlap or partially overlap.

[0061] In some embodiments, the first heating wire 41 and the second heating wire 42 completely overlap in the height direction of the evaporator assembly 100, and the two sets of heating wires cover the area where the two sets of evaporation pipes are located, that is, the upper and lower ends of the first heating wire 41 and the second heating wire 42 are flush and the number of them is the same.

[0062] In some implementations, refer to Figure 7In the height direction of the evaporator assembly 100, the first heating wire 41 and the second heating wire 42 do not completely overlap. One set of heating wires located between the two sets of evaporation pipes covers the area where the evaporation pipes are located, while the other set of heating wires located on the side of one set of evaporation pipes away from the other set covers the lower area of ​​the evaporation pipes. For example, along the height direction of the evaporator assembly 100, the first heating wire 41 covers the area where the evaporation pipes are located, and the second heating wire 42 covers the lower area of ​​the evaporation pipes, so as to focus on heating the area with thicker frost on the lower side of the evaporator assembly 100 and accelerate the defrosting efficiency of the bottom of the evaporator assembly 100.

[0063] In some implementations, refer to Figure 8 The evaporator assembly 100 includes three sets of evaporation tubes, the extending planes of which are parallel or substantially parallel. Two sets of heating wires are alternately arranged with the three sets of evaporation tubes, and both sets of heating wires are located between the two outermost sets of evaporation tubes. For example, the three sets of evaporation tubes are referred to as the first evaporation tube 11, the second evaporation tube 21, and the third evaporation tube 31. The two sets of heating wires are referred to as the first heating wire 41 and the second heating wire 42. The first heating wire 41 is located between the first evaporation tube 11 and the second evaporation tube 21, and the second heating wire 42 is located between the second evaporation tube 21 and the third evaporation tube 31.

[0064] In some embodiments, in the height direction of the evaporator assembly 100, the bottom of one set of evaporator pipes is positioned higher than the bottom of the other set of evaporator pipes. That is, the two sets of evaporator pipes have an overlapping area at the top and a non-overlapping area at the bottom in the height direction of the evaporator assembly 100. The bottoms of the two sets of evaporator pipes form a stepped notch. When the return airflow exchanges heat with the bottom of the evaporator assembly 100, the frost layer can extend outward along the side of the lower set of evaporators, increasing the frost-collecting space at the bottom of the evaporator assembly 100. A larger amount of frost can be relatively concentrated at the bottom of the evaporator assembly 100, thereby allowing for defrosting by heating the bottom of the evaporator assembly 100.

[0065] One of the heating wires located between the two sets of evaporation pipes includes a first part disposed at the top and a second part disposed below the first part. The first part is used to heat the overlapping area of ​​the upper part of the two sets of evaporation pipes, and the second part is used to heat the non-overlapping area of ​​the lower set of evaporation pipes at the bottom.

[0066] The second part can quickly heat and defrost the frost at the bottom of the lower set of evaporator tubes. After the frost at the bottom of the lower set of evaporator tubes is reduced, the heat from the second part will also be conducted to the bottom of the higher set of evaporator tubes, thereby heating and defrosting the bottom of the higher set of evaporator tubes, significantly improving the efficiency of heating and defrosting.

[0067] The first part is fixed to one side of the higher group of evaporation pipes at the bottom, and the second part is fixed to one side of the lower group of evaporation pipes at the bottom.

[0068] Another set of heating wires located outside the two sets of evaporation pipes can be placed on the side of the higher set of evaporation pipes at the bottom to heat and defrost the evaporator of the higher set at the bottom. Alternatively, another set of heating wires located outside the two sets of evaporation pipes can be placed on the side of the lower set of evaporation pipes at the bottom to heat and defrost the evaporator of the lower set at the bottom.

[0069] In the first fin 12 and the second fin 22, the fin used to fix the heating wire is provided with a slot 51. The slot 51 is open and the heating wire is fixed in the slot 51.

[0070] In this embodiment, a slot 51 is provided on the side of the first fin 12 facing the second fin 22, and the slot 51 on the first fin 12 is open towards the second fin 22. A slot 51 is also provided on the side of the second fin 22 away from the first fin 12, and the slot 51 on the second fin 22 is open towards the side away from the first fin 12. The heating wire can be fixed to the first fin 12 and the second fin 22 through the slot 51, making the installation of the heating wire relatively simple and convenient.

[0071] In some embodiments, slots 51 are provided on both sides of the first fin 12 and the second fin 22 along the thickness direction of the evaporator assembly 100. During the assembly of the evaporator assembly 100, it is not necessary to specially set the orientation of the first fin 12 and the second fin 22. The heating wire can be fixed in the slots 51 in the corresponding area according to the preset installation position, which facilitates the assembly of the evaporator.

[0072] As a further limitation, the slot 51 has locking walls 511 on both sides. The shape of the locking walls 511 is set to be an arc that matches the shape of the outer edge of the heating wire. When the heating wire is engaged with the slot 51, the locking walls 511 contact the heating wire to fix and limit the heating wire. At the same time, the heat of the heating wire is directly conducted to the fins through the locking walls 511.

[0073] The two sets of evaporation pipes extend in a serpentine bend, and each includes a straight pipe 111 arranged in parallel vertically and a bend 112 connecting the adjacent straight pipe 111.

[0074] The two sets of heating wires also extend in a serpentine bend, and include straight heating wires 411 arranged in parallel vertically and curved heating wires 412 connecting adjacent straight heating wires 411.

[0075] In the thickness direction of the evaporator assembly 100, the linear heating wire 411 is arranged opposite to the straight tube 111; in the height direction of the evaporator assembly 100, the arc heating wire 412 is located between two adjacent bends 112.

[0076] The fact that the linear heating wire 411 and the straight tube 111 are arranged opposite each other means that the linear heating wire 411 and the straight tube 111 are roughly on the same horizontal plane. The evaporator tube needs to absorb heat from the air, so the evaporator tube is more prone to frost formation. The positions of the linear heating wire 411 and the arc heating wire 412 can focus on heating the more prone to frost formation in the evaporator assembly 100 for precise and efficient defrosting.

[0077] The evaporator assembly 100 also includes a mounting bracket 60 respectively disposed on both sides of the width direction of the two sets of evaporation pipes, and a connecting structure 70 connecting the mounting bracket 60 on the same side.

[0078] The mounting bracket 60 is arranged in the shape of a long strip and extends along the height direction of the evaporator assembly 100. As an example, this embodiment provides four mounting brackets 60. The mounting brackets 60 located on the same side of the evaporator assembly 100 are arranged close together and side by side, while the mounting brackets 60 located on both sides of the evaporator assembly 100 are parallel.

[0079] The connecting structure 70 can be a connecting rod, connecting plate, or other structure that serves to connect and fix the components. The connecting structure 70 and the fixing bracket 60 on the same side can be fixedly connected using fasteners such as bolts or screws.

[0080] The mounting bracket 60 is provided with a perforation 61, and the straight tube 111 or the bent tube 112 in the first evaporator tube and the second evaporator tube can be connected to the perforation 61.

[0081] In the thickness direction of the evaporator assembly 100, the mounting bracket 60 is provided with a mounting groove 62 corresponding to the position of the slot 51. The position of the mounting groove 62 corresponds to the position of the slot 51, and the linear heating wire 411 or the arc heating wire 412 is fixed on the mounting bracket 60 through the mounting groove 62.

[0082] The mounting bracket 60 is provided with snap-fit ​​walls 63 on both sides of the mounting groove 62, and a buffer groove 64 on the side of the snap-fit ​​wall 63 facing away from the mounting groove 62. The snap-fit ​​walls 63 on both sides of the mounting groove 62 are parallel to each other. During the installation of the heating wire, the buffer groove 64 provides space for the snap-fit ​​wall 63 to deform, allowing for a certain dimensional assembly error between the heating wire and the mounting groove 62. This ensures smooth assembly of the heating wire and the mounting bracket 60, and also makes the fit between the heating wire and the mounting bracket 60 more secure and reliable.

[0083] The fixing bracket 60 and fins fix and limit the evaporation pipe and heating wire, making the heating wire more secure.

[0084] Along the height of the evaporator assembly 100, the heating wire extends through the area where all the evaporator tubes are located. Furthermore, within the height range covered by the heating wire, the heating power ratio of the upper half of the heating wire to the lower half of the heating wire is 1:2 to 1:2.5.

[0085] The lower heating element has a power of 50-60W. Increasing the power of the lower heating element allows for rapid defrosting of the thicker frost at the bottom of the evaporator assembly 100. Furthermore, the aforementioned power range is low for most household and industrial applications, ensuring the safety of defrosting via heating.

[0086] The return air vent in the refrigeration equipment is located in the lower half of the evaporator assembly 100. The lower half of the heating device 40 with a larger heating power generates more heat per unit time, which can heat the lower half of the evaporator assembly 100 with a large amount of frost, thereby improving defrosting efficiency.

[0087] The upper part of the heating device 40, with its lower heating power, generates relatively less heat per unit time. This allows for targeted heating of the upper area of ​​the evaporator assembly 100 where frost accumulation is relatively low. This ensures that the defrosting temperature of the evaporator assembly 100 is met without affecting the temperature inside the evaporator compartment of the refrigeration equipment, while also saving costs. The heating device 40 specifically heats different areas of the evaporator assembly 100, improving the defrosting effect on both the upper and lower areas of the evaporator assembly 100.

[0088] One embodiment of the present invention provides a refrigeration device (not shown in the figure). The refrigeration device can be configured as a refrigerator, freezer, display case, air conditioner, etc. This embodiment takes a refrigerator as an example for description.

[0089] The refrigeration equipment includes a cabinet, inside which are storage compartments and a cooling chamber separated by air ducts. The storage compartments can be configured as refrigerators or freezers. The air ducts have air inlets and return air outlets connecting the storage compartments and the cooling chamber.

[0090] The refrigeration equipment also includes the aforementioned evaporator assembly 100, which is disposed within the cooling chamber.

[0091] The refrigerant evaporates in the evaporator pipes, absorbing heat from the cooling chamber, thus lowering the temperature of the air inside and achieving cooling. The cooled air enters the storage compartment through the air inlet to maintain the storage temperature. The air in the storage compartment then flows back into the cooling chamber through the return air inlet, achieving circulating heat exchange and cooling.

[0092] The return air inlet is positioned relative to the evaporator assembly 100, and two sets of heating wires are respectively located on the side of the two sets of evaporator pipes away from the return air inlet. The return airflow does not directly contact the heating wires, achieving a better heat exchange and cooling effect. The heat from the two sets of heating wires is conducted to the surface of the evaporator assembly 100 through fins, achieving rapid defrosting.

[0093] The above description, based on the embodiments shown in the drawings, details the structure, features, and effects of this utility model. The above description is only a preferred embodiment of this utility model, but the scope of implementation of this utility model is not limited to what is shown in the drawings. Any changes made in accordance with the concept of this utility model, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, shall be within the protection scope of this utility model.

Claims

1. An evaporator assembly for installation in a refrigeration device, characterized in that: The evaporator assembly (100) includes two adjacent sets of evaporation pipes, a number of fins fixed at intervals on each set of evaporation pipes, and a heating device (40) for defrosting. The heating device (40) also includes two sets of heating wires. In the thickness direction of the evaporator assembly (100), the two sets of heating wires and the two sets of evaporation pipes are arranged alternately, and the heating wires are fixed on the fins.

2. The evaporator assembly according to claim 1, characterized in that: The heating device (40) also includes a bent portion (43) for integral connection with the two sets of heating wires.

3. The evaporator assembly according to claim 2, characterized in that: The projection of the heating device (40) onto the end face of the evaporator assembly (100) along the height direction of the evaporator assembly (100) is U-shaped.

4. The evaporator assembly according to claim 1, characterized in that: The two sets of evaporation pipes are arranged in parallel, and the two sets of heating wires are arranged in parallel with the two sets of evaporation pipes. Along the height direction of the evaporator assembly (100), the two sets of heating wires cover the area where the evaporation pipes are located; or, along the height direction of the evaporator assembly (100), one set of heating wires located between the two sets of evaporation pipes covers the area where the evaporation pipes are located, and the other set of heating wires located on the side of one set of evaporation pipes away from the other set of evaporation pipes covers the lower area of ​​the evaporation pipes.

5. The evaporator assembly according to claim 1, characterized in that: The two sets of evaporation pipes are arranged in parallel, and the two sets of heating wires are arranged in parallel with the two sets of evaporation pipes. The two sets of evaporation pipes are respectively referred to as the first evaporation pipe (11) and the second evaporation pipe (21). The fins include a first fin (12) disposed on the first evaporation pipe (11) and a second fin (22) disposed on the second evaporation pipe (21). The first fin (12) and the second fin (22) are separately disposed. The two sets of heating wires are respectively referred to as the first heating wire (41) and the second heating wire (42). The first heating wire (41) is disposed between the first evaporation pipe (11) and the second evaporation pipe (21). The first heating wire (41) is fixed on the first fin (12), or on the second fin (22), or between the first fin (12) and the second fin (22), or partially disposed on the first fin (12) and partially disposed on the second fin (22). The second heating wire (42) is disposed on the side of the first evaporation pipe (11) away from the second evaporation pipe (21) or the side of the second evaporation pipe (21) away from the first evaporation pipe (11), and the second heating wire (42) is fixed on the first fin (12) or the second fin (22).

6. The evaporator assembly according to claim 5, characterized in that: In the first fin (12) and the second fin (22), the fin used to fix the heating wire is provided with a slot (51). The slot (51) is open. The first fin (12) and the second fin (22) are in contact with each other. The heating wire is fixed in the slot (51).

7. The evaporator assembly according to claim 1, characterized in that: Both sets of evaporation pipes extend in a serpentine bend and include straight pipes (111) arranged vertically in parallel and bends (112) connecting adjacent straight pipes (111). Both sets of heating wires also extend in a serpentine bend and include straight heating wires (411) arranged vertically in parallel and arc heating wires (412) connecting adjacent straight heating wires (411). In the thickness direction of the evaporator assembly (100), the straight heating wires (411) are arranged opposite to the straight pipes (111); in the height direction of the evaporator assembly (100), the arc heating wires (412) are located between two adjacent bends (112). Alternatively, the evaporator assembly (100) may further include a fixing bracket (60) respectively disposed on both sides of the width direction of the two sets of evaporation pipes, and a connecting structure (70) connecting the fixing bracket (60) on the same side. The heating wire is fixed to the fixing bracket (60) on both sides of the width direction of the evaporator assembly (100). The fixing bracket (60) is provided with a fixing groove (62) for fixing the heating wire, a snap-fit ​​wall (63) located on both sides of the fixing groove (62), and a buffer groove (64) located on the side of the snap-fit ​​wall (63) away from the fixing groove (62).

8. The evaporator assembly according to claim 1, characterized in that: In the height direction of the evaporator assembly (100), the bottom of one set of evaporation pipes is set higher than the bottom of the other set of evaporation pipes, and a set of heating wires located between the two sets of evaporation pipes includes a first part disposed above and a second part disposed below the first part.

9. The evaporator assembly according to claim 1, characterized in that: In the height direction of the evaporator assembly (100), the heating wire extends through all the areas where the evaporation pipes are located, and within the height range covered by the heating wire, the heating power ratio of the upper half heating wire to the lower half heating wire is 1:2 to 1:2.

5.

10. The evaporator assembly according to claim 9, characterized in that: The heating wire in the lower part has a power of 50-60W.

11. A refrigeration device, comprising a housing, wherein a storage compartment and a cooling chamber are disposed within the housing and spaced apart by an air duct plate, the air duct plate being provided with an air inlet and an air return outlet communicating with the storage compartment and the cooling chamber, characterized in that: The refrigeration equipment further includes an evaporator assembly (100) as described in any one of claims 1-10, the evaporator assembly (100) being disposed within the cooling chamber, and the return air inlet being disposed opposite to the evaporator assembly (100), and the two sets of heating wires being disposed on the side of the two sets of evaporation pipes away from the return air inlet.

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