Evaporator assembly and refrigeration equipment

Abstract

The utility model discloses an evaporator assembly and refrigeration equipment, the evaporator assembly is used for being installed in the refrigeration equipment, and the evaporator assembly comprises a first evaporator and a second evaporator. The first evaporator comprises a first evaporation pipe and a plurality of first fins arranged on the first evaporation pipe at intervals. The second evaporator comprises a second evaporation pipe and a plurality of second fins arranged on the second evaporation pipe at intervals. The evaporator assembly further comprises heating wires, and the heating wires are fixed to the first fins and / or the second fins. The heat of the heating wire located between the first evaporation pipe and the second evaporation pipe can be radiated to the first evaporator and the second evaporator at the same time, frost on the surfaces of the evaporators on the two sides can be heated and defrosted at the same time, and the heating and defrosting efficiency of the evaporator assembly can be improved. Moreover, the heating wires are fixed on the fins, heat can be conducted through the fins, the heat can be conducted to the surface of the evaporator assembly more quickly, and quick defrosting is achieved.

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 during 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 with defrosting. However, improper connection between the heating element and the evaporator can affect heat transfer efficiency. 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, making the connection between the heating assembly and the evaporator simpler and effectively improving the heat transfer effect of the heating assembly to the evaporator.

[0005] To achieve one of the above objectives, this utility model provides an evaporator assembly for installation in a refrigeration device, comprising:

[0006] The first evaporator includes a first evaporation tube and a plurality of first fins spaced apart on the first evaporation tube;

[0007] The second evaporator is disposed opposite to the first evaporator and includes a second evaporation tube and a plurality of second fins spaced apart on the second evaporation tube;

[0008] A heating wire is disposed between the first evaporator tube and the second evaporator tube, and is fixed to the first fin and / or the second fin.

[0009] 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 to the other fin, the heating wire is fixed in the slot, and the first fin and the second fin are in contact with each other.

[0010] As a further improvement of one embodiment of the present invention, slots are provided on the opposite sides of the first fin and the second fin, the first fin and the second fin are staggered, and both are engaged with the heating wire through the slots.

[0011] 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 having a locking wall, and the shape of the locking wall being set to an arc shape that matches the shape of the heating wire.

[0012] As a further improvement of one embodiment of the present invention, the slot has guide walls on both sides of the opening position, the guide walls extend toward the side opposite to the slot, and the guide walls are arranged in an arc shape.

[0013] As a further improvement of one embodiment of the present invention, the bottom of the first evaporator is flush with the bottom of the second evaporator, or the bottom of the first evaporator is higher than the bottom of the second evaporator, or the first evaporator and the second evaporator are misaligned in the height direction of the evaporator assembly.

[0014] As a further improvement of one embodiment of the present invention, both the first evaporator tube and the second evaporator tube extend in a serpentine bend and each includes a straight tube arranged parallel to each other vertically and a bend connecting adjacent straight tubes. The heating wire also extends in a serpentine bend and includes 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 tube; in the height direction of the evaporator assembly, the arc heating wire is located between two adjacent bends.

[0015] As a further improvement of one embodiment of the present invention, the heating wire is fixed on the first fin and / or the second fin by a straight heating wire.

[0016] As a further improvement of one embodiment of the present invention, the first evaporator further includes a first fixing frame disposed on both sides of the width direction of the first evaporator tube, the second evaporator further includes a second fixing frame disposed on both sides of the width direction of the second evaporator tube, and the evaporator assembly further includes a connecting structure connecting the first fixing frame and the second fixing frame located on the same side.

[0017] As a further improvement of one embodiment of the present invention, in the height direction of the evaporator assembly, both the first fin and the second fin include an upper fin located on the upper side and a lower fin located on the lower side. The lower fin occupies 15% to 20% of the height of the evaporator assembly, and in the width direction of the evaporator assembly, the distribution spacing of the lower fin is 5mm to 10mm.

[0018] 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 evaporator tubes 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.

[0019] To achieve one of the above objectives, one embodiment of the present invention provides a refrigeration device, including a housing and an evaporator chamber disposed within the housing. The refrigeration device further includes the aforementioned evaporator assembly, which is disposed within the evaporator chamber.

[0020] Compared with existing technologies, the heating wire located between the first and second evaporator tubes in this invention can radiate heat to both evaporators simultaneously, thereby simultaneously heating and defrosting the frost on the surfaces of both evaporators and improving the efficiency of defrosting the evaporator assembly. Furthermore, since the heating wire is fixed to the fins, heat can be conducted through the fins more quickly to the surface of the evaporator assembly, achieving rapid defrosting. Attached Figure Description

[0021] Figure 1 This is an isometric view of an evaporator assembly provided by this utility model;

[0022] Figure 2 yes Figure 1 Enlarged structural diagram of section A;

[0023] Figure 3 This is a side view of an evaporator assembly provided by this utility model;

[0024] Figure 4 This is a side view of an evaporator assembly in some embodiments, wherein the heating wire comprises two parts;

[0025] Figure 5 These are side views of the evaporator assembly in some implementations;

[0026] Figure 6 This is a structural side view of the fins, evaporation tubing, and heating wires in the evaporator assembly in some embodiments;

[0027] Figure 7 This is a structural side view of the fins, evaporation tubing, and heating wires in an evaporator assembly in some embodiments, wherein two sets of fins are spaced apart.

[0028] Figure 8 This is a structural side view of the fins, evaporation tubing, and heating wires in an evaporator assembly in some embodiments, wherein two sets of fins are integrally arranged;

[0029] Figure 9These are structural side views of the fins, evaporation pipes, and heating wires in some implementations of the evaporator assembly, where the two sets of evaporators have different heights;

[0030] Figure 10 These are structural side views of the fins, evaporation pipes, and heating wires in some implementations of the evaporator assembly, in which two sets of evaporators are at the same height but staggered.

[0031] Figure 11 yes Figure 5 Enlarged structural diagram of section B.

[0032] Figure label:

[0033] 100. Evaporator assembly; 10. First evaporator; 11. First evaporator tube; 12. First fin; 13. Straight tube; 14. Bend; 15. First mounting bracket; 151. Perforation; 152. Mounting groove; 153. Snap-fit ​​wall; 154. Buffer groove; 20. Second evaporator; 21. Second evaporator tube; 22. Second fin; 23. Snap-fit ​​groove; 231. Snap-fit ​​wall; 232. Guide wall; 25. Second mounting bracket; 30. Heating wire; 33. Straight heating wire; 34. Curved heating wire; 50. Connection structure; 60. Connecting pipe. Detailed Implementation

[0034] 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.

[0035] 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 positions of the refrigerator under normal operating conditions.

[0036] 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.

[0037] To facilitate understanding by those skilled in the art, the evaporator assembly is defined to have a height direction (referring to the vertical direction during the use of refrigeration equipment), a width direction, and a thickness direction, wherein the height direction, width direction, and thickness direction are mutually perpendicular. To enable those skilled in the art to better understand the technical solution of this utility model, the following will be discussed in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1 -11, to clearly and completely describe the technical solutions in the embodiments of this utility model.

[0038] 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.

[0039] 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.

[0040] Reference Figure 1 The evaporator assembly 100 includes a first evaporator 10 and a second evaporator 20, which are arranged opposite to each other.

[0041] The first evaporator 10 includes a first evaporator tube 11 and a plurality of first fins 12, with the plurality of first fins 12 arranged at intervals on the first evaporator tube 11.

[0042] The second evaporator 20 includes a second evaporator tube 21 and a plurality of second fins 22, with the plurality of second fins 22 arranged at intervals on the second evaporator tube 21.

[0043] The evaporator assembly 100 also includes a heating wire 30, at least a portion of which is disposed between the first evaporator tube 11 and the second evaporator tube 21, and the heating wire 30 is fixed on the first fin 12 and / or the second fin 22.

[0044] The heating wire 30, located between the first evaporator tube 11 and the second evaporator tube 21, can radiate heat to both the first evaporator 10 and the second evaporator 20 simultaneously, thus simultaneously heating and defrosting the frost on the surfaces of both evaporators and improving the defrosting efficiency of the evaporator assembly 100. Furthermore, since the heating wire 30 is fixed to the fins, heat can be conducted through the fins more quickly to the surface of the evaporator assembly 100, achieving rapid defrosting.

[0045] In some implementations, refer to Figure 3 All heating wires 30 are positioned between the first evaporator tube 11 and the second evaporator tube 21. The heat from the heating wires 30 is conducted to the surfaces of the first evaporator tube 10 and the second evaporator tube 20, achieving defrosting.

[0046] In some implementations, refer to Figure 4 One part of the heating wire 30 is disposed between the first evaporator tube 11 and the second evaporator tube 21, and the other part of the heating wire 30 is disposed on the side of one set of evaporator tubes away from the other set of evaporator tubes.

[0047] For example, another portion of the heating wire 30 is disposed on the side of the second evaporator 20 away from the first evaporator 10, with the return air vent facing the surface of the second evaporator 20. The area of ​​the second evaporator 20 directly opposite the return air vent has a larger amount of frost, and this portion of the heating wire 30 can specifically heat the area with a large amount of frost to achieve rapid defrosting.

[0048] The first fin 12 and the second fin 22 can be set as separate units or as a single unit.

[0049] In this embodiment, refer to Figure 5 The first fin 12 and the second fin 22 are set separately. The first evaporator 10 and the second evaporator 20 are in contact with each other to transfer heat. The two separate evaporators are easier to manufacture and assemble.

[0050] In some implementations, refer to Figure 6 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. In the thickness direction of the evaporator assembly 100, the gap between the first fin 12 and the second fin 22 can be controlled within 1.5 mm.

[0051] The two sets of fins are arranged close together, and convection is generated between the two sets of evaporators. The heat from the heating wire 30 acting on one set of evaporators is conducted to the other set of evaporators through radiation, which achieves a good heat conduction effect.

[0052] In some implementations, refer to Figure 7The first fin 12 and the second fin 22 are integrated into one unit. The two sets of fins integrated into one unit have better heat conduction effect and improve the efficiency of heating and defrosting.

[0053] In some implementations, refer to Figure 8 and Figure 9 The fins in the first evaporator 10 and the second evaporator 20 can completely overlap or partially overlap in the height direction, that is, the heights of the first evaporator 10 and the second evaporator 20 can be the same or different. Alternatively, the first evaporator 10 and the second evaporator 20 can be the same height, but the first evaporator 10 and the second evaporator 20 can be staggered in the height direction.

[0054] In some embodiments, the heating wire 30 is fixed to the first fin 12. The heating wire 30 can be fixed at any position in the first fin 12, such as the middle or the edge of the first fin 12.

[0055] The heat from the heating wire 30 is directly conducted to the first fin 12, and the defrosting heat is then conducted to the second fin 22 through the first fin 12, thus achieving heat conduction and effectively heating and defrosting both sets of evaporators.

[0056] In some embodiments, the heating wire 30 is fixed to the second fin 22. The heating wire 30 can be fixed at any position in the second fin 22, either in the middle or at the edge of the second fin 22.

[0057] The heat from the heating wire 30 is directly conducted to the second fin 22, and the defrosting heat is then conducted to the first fin 12 through the second fin 22, thus achieving heat conduction and effectively heating and defrosting both sets of evaporators.

[0058] In some embodiments, the heating wire 30 is fixed between the first fin 12 and the second fin 22, and the heating wire 30 is in contact with the first fin 12 and the second fin 22 respectively. The heat of the heating wire 30 can be synchronously conducted to the first fin 12 and the second fin 22 to simultaneously heat and defrost the two sets of evaporators.

[0059] In some embodiments, a portion of the heating wire 30 is fixed on the first fin 12, and another portion of the heating wire 30 is fixed on the second fin 22.

[0060] As an example, refer to Figure 10 Along the height direction of the evaporator assembly 100, the heating wire 30 has a first region located on the upper side and a second region located on the lower side. The heating wire 30 in the first region is fixed on the first fin 12, and the heating wire 30 in the second region is fixed on the second fin 22.

[0061] The heat from the upper heating wire 30 is directly conducted to the first fin 12, and the heat from the lower heating wire 30 is directly conducted to the second fin 22. The specific setting position of the heating wire 30 can be configured according to the amount of frost on the evaporator surface, so that the heating wire 30 is in direct contact with the fin with more frost.

[0062] With this setting, the heating wire 30 can be specifically set according to the amount of frost on the surface of the evaporator assembly 100, so that the heat of the heating wire 30 is relatively concentrated in the area with a large amount of frost, so as to achieve a precise and efficient defrosting effect.

[0063] In some embodiments, the first fin 12 and the second fin 22 are provided with a slot 23 for fixing the heating wire 30. The slot 23 is open to the other fin, and the heating wire 30 is fixed in the slot 23.

[0064] In some embodiments, the first fin 12 or the second fin 22 is provided with the aforementioned slot 23. For example, the first fin 12 is provided with the slot 23, while the second fin 22 is not provided with the slot 23. The slot 23 is open to the second fin 22, and the first fin 12 and the second fin 22 are in contact with each other. The heating wire 30 is fixed in the slot 23.

[0065] In some embodiments, along the height direction of the evaporator assembly 100, a portion of the first fin 12 is provided with a first slot, which is open toward the second fin 22, and the heating wire 30 located in the first region is fixed in the first slot. A portion of the second fin 22 is provided with a second slot, which is open toward the first fin 12, or the second slot is open in a direction away from the first fin 12, and the heating wire 30 located in the second region is fixed in the second slot.

[0066] In some embodiments, the first fin 12 and the second fin 22 are provided with slots 23 on both sides along the horizontal direction. 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 30 can be fixed in the slots 23 in the corresponding area according to the preset installation position, which facilitates the assembly of the evaporator.

[0067] In this embodiment, slots 23 are provided on opposite sides of the first fin 12 and the second fin 22. The first fin 12 and the second fin 22 are staggered and are both engaged with the heating wire 30 through the slots 23.

[0068] As an example, refer to Figure 8The first fin 12 is provided with a first slot, and the second fin 22 is provided with a second slot. The first slot and the second slot are offset along the height of the evaporator assembly 100. At least a portion of the opening of the first slot is covered by one side of the second fin 22, and at least a portion of the opening of the second slot is covered by one side of the first fin 12.

[0069] Thus, at least part of the heating wire 30 conducts heat through the slot 23 of one set of fins and also through the sidewall of the other set of fins. Both sets of fins are directly connected to the heating wire 30, resulting in better heat conduction of the evaporator assembly 100.

[0070] In some embodiments, slots 23 are provided on opposite sides of the first fin 12 and the second fin 22. The first fin 12 and the second fin 22 are flush with each other. The slots 23 on the two sets of fins are arranged opposite to each other. The heating wire 30 is fixed in the two slots 23 respectively. The heating wire 30 directly contacts the two sets of fins through the slots 23 on both sides, which enhances the heat conduction effect of the evaporator assembly 100.

[0071] Reference Figure 11 The slot 23 has a locking wall 231, the shape of which matches the shape of the outer edge of the heating wire 30. When the heating wire 30 is installed, the locking wall 231 can fit against the outer peripheral wall of the heating wire 30, thus avoiding excessive friction between the heating wire 30 and the slot wall of the slot 23.

[0072] The fins have guide walls 232 at the two corners of the opening of the slot 23. The guide walls 232 extend away from the slot 23, thus making the opening of the slot 23 funnel-shaped. The guide walls 232 are curved to provide better guidance for the heating wire 30. The entire slot 23 is roughly Ω-shaped, which facilitates the installation of the heating wire 30.

[0073] Please refer to the following: Figure 1 and Figure 2 The heating wire 30 extends in a serpentine bend and includes straight heating wires 33 arranged vertically in parallel and curved heating wires 34 connecting adjacent straight heating wires 33. The heating wire 30 is fixed to the first fin 12 and / or the second fin 22 by the straight heating wires 33.

[0074] The first evaporator 10 and the second evaporator 20 are arranged in parallel. Parallel means that the planes in which the extension directions of the first evaporator 10 and the second evaporator 20 are located are parallel or approximately parallel.

[0075] The first evaporator 10 further includes first fixing brackets 15 disposed on both sides of the first evaporator tube 11 in the width direction, and the second evaporator 20 further includes second fixing brackets 25 disposed on both sides of the second evaporator tube 21 in the width direction. The evaporator assembly 100 further includes a connecting structure 50 connecting the first fixing brackets 15 and the second fixing brackets 25 located on the same side. The connecting structure 50 can be a connecting rod, connecting plate, or other structure that serves to connect and fix the components. The connecting structure 50 and the first fixing brackets 15 and the second fixing brackets 25 can be fixedly connected by fasteners such as bolts or screws.

[0076] In the first fixing frame 15 and the second fixing frame 25, the fixing frame used to fix the heating wire 30 is provided with a fixing groove 152. In the thickness direction of the evaporator assembly 100, the position of the fixing groove 152 corresponds to the position of the slot 23. The straight heating wire 33 or the arc heating wire 34 is fixed on the fixing frame through the fixing groove 152. The fixing frame and the fins play a fixing and limiting role for the heating wire 30, making the fixing of the heating wire 30 more stable.

[0077] The mounting bracket has snap-fit ​​walls 153 on both sides of the mounting groove 152, and a buffer groove 154 on the side of the snap-fit ​​wall 153 facing away from the mounting groove 152. The snap-fit ​​walls 153 on both sides of the mounting groove 152 are parallel to each other. During the installation of the heating wire 30, the buffer groove 154 provides space for the snap-fit ​​wall 153 to deform, allowing for a certain dimensional assembly error between the heating wire 30 and the mounting groove 152. This ensures smooth assembly of the heating wire 30 and the mounting bracket, and also makes the fit between the heating wire 30 and the mounting bracket more secure and reliable.

[0078] The first evaporator tube 11 and the second evaporator tube 21 also extend in a serpentine bend, and both include straight tubes 13 arranged parallel to each other vertically and bent tubes 14 connecting adjacent straight tubes 13. In the thickness direction of the evaporator assembly 100, a linear heating wire 33 is arranged opposite to the straight tube 13. In the height direction of the evaporator assembly 100, an arc-shaped heating wire 34 is located between two adjacent bent tubes 14.

[0079] The fact that the linear heating wire 33 and the straight tube 13 are positioned opposite each other means that the linear heating wire 33 and the straight tube 13 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 33 and the arc heating wire 34 can focus on heating the areas in the evaporator that are more prone to frost formation, so as to defrost accurately and efficiently.

[0080] The evaporator assembly 100 also includes a connecting pipe 60 that connects the first evaporator tube 11 and the second evaporator tube 21. The connecting pipe 60 connects the same side end of the bottom straight pipe 13 in the two sets of evaporator tubes. The mounting bracket is provided with a through hole 151 for the evaporator tubes to pass through. The straight pipe 13 or the bent pipe 14 in the first evaporator tube 11 and the second evaporator tube 21 can be connected to the through hole 151.

[0081] In this embodiment, the bend 14 extends along the height direction of the evaporator assembly 100, meaning that the two sets of evaporation pipes are straight pipes arranged vertically. The connecting pipe 60 extends along the width direction of the evaporation pipes, meaning that the connecting pipe 60 is a pipe extending horizontally.

[0082] In the height direction of the evaporator assembly 100, the first fin 12 and the second fin 22 both include an upper fin located on the upper side and a lower fin located on the lower side. The lower fin occupies 15% to 20% of the height of the evaporator assembly 100, and the distribution spacing of the lower fin is 5 mm to 20 mm.

[0083] In this embodiment, the spacing between adjacent fins in the lower fins of the evaporator assembly 100 is 5 to 10 mm in the width direction.

[0084] The spacing between adjacent fins should not be too small or too large. A small spacing will result in more frost buildup on the surface of the evaporator assembly 100, affecting the evaporator's cooling performance. Conversely, a large spacing will reduce the thermal conductivity between the fins, also affecting the evaporator's cooling performance.

[0085] In this invention, the spacing between the lower fins of the evaporator assembly 100 is reduced, and the heating wire 30 is placed between the two sets of evaporation pipes, so that the heat of the heating wire 30 can radiate to the fins on both sides. The heat conduction effect between the fins with higher density is better, and the heat can be quickly conducted to the surface of the evaporator assembly 100. Even if the density between adjacent fins increases, defrosting can be achieved quickly, thus improving the efficiency of heating and defrosting.

[0086] In the height direction of the evaporator assembly 100, the heating wire 30 extends through the area where all the evaporator tubes are located. Furthermore, within the height range covered by the heating wire 30, the heating power ratio of the upper half of the heating wire 30 to the lower half of the heating wire 30 is 1:2 to 1:2.5.

[0087] As an example, the power of the lower heating wire 30 is 50-60W. Increasing the power of the lower heating wire 30 allows for rapid defrosting of the thicker frost areas at the bottom of the evaporator assembly 100. Furthermore, the aforementioned power range is considered low for most household and industrial applications, ensuring the safety of defrosting by heating.

[0088] 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 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.

[0089] The upper part of the heating device, 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 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.

[0090] 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.

[0091] The refrigeration equipment includes a cabinet, inside which are a storage compartment and an evaporator compartment separated by an air duct plate. The storage compartment can be configured as a refrigerator compartment or a freezer compartment. The air duct plate has an air inlet and an air return outlet connecting the storage compartment and the evaporator compartment.

[0092] The refrigeration equipment also includes the aforementioned evaporator assembly 100, which is disposed in the evaporator chamber. The refrigerant evaporates within the evaporator pipes, absorbing heat from the evaporator chamber, thus lowering the temperature of the air inside the evaporator chamber and achieving refrigeration. The refrigerated air enters the storage compartment through the air inlet to maintain the storage temperature within the storage compartment. The air in the storage compartment flows back to the evaporator chamber through the return air inlet, achieving circulating heat exchange and refrigeration.

[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 (100) for installation in a refrigeration device, characterized in that, include: The first evaporator (10) includes a first evaporator tube (11) and a plurality of first fins (12) spaced apart on the first evaporator tube (11); The second evaporator (20) is disposed opposite to the first evaporator (10) and includes a second evaporation tube (21) and a plurality of second fins (22) spaced apart on the second evaporation tube (21); A heating wire (30), at least a portion of which is disposed between the first evaporator tube (11) and the second evaporator tube (21), and the heating wire (30) is fixed to the first fin (12) and / or the second fin (22).

2. The evaporator assembly (100) according to claim 1, characterized in that: In the first fin (12) and the second fin (22), the fin used to fix the heating wire (30) is provided with a slot (23), the slot (23) is open to the other fin, the heating wire (30) is fixed in the slot (23), and the first fin (12) and the second fin (22) are in contact with each other.

3. The evaporator assembly (100) according to claim 1, characterized in that: The first fin (12) and the second fin (22) are provided with slots (23) on opposite sides. The first fin (12) and the second fin (22) are arranged alternately and are both connected to the heating wire (30) through the slots (23).

4. The evaporator assembly (100) according to claim 1, characterized in that: In the first fin (12) and the second fin (22), the fin used to fix the heating wire (30) is provided with a slot (23), the slot (23) has a locking wall (231), and the shape of the locking wall (231) is set to be an arc shape that matches the shape of the outer edge of the heating wire (30); And / or, the slot (23) has guide walls (232) on both sides of the opening position, the guide walls (232) extending toward the side opposite to the slot (23), and the guide walls (232) are arranged in an arc shape.

5. The evaporator assembly (100) according to claim 1, characterized in that: The bottom of the first evaporator (10) is flush with the bottom of the second evaporator (20), or the bottom of the first evaporator (10) is higher than the bottom of the second evaporator (20), or the first evaporator (10) and the second evaporator (20) are misaligned in the height direction of the evaporator assembly (100).

6. The evaporator assembly (100) according to claim 1, characterized in that: The first evaporator tube (11) and the second evaporator tube (21) both extend in a serpentine bend and each includes a straight tube (13) arranged vertically in parallel and a bend (14) connecting adjacent straight tubes (13). The heating wire (30) also extends in a serpentine bend and includes a straight heating wire (33) arranged vertically in parallel and an arc heating wire (34) connecting adjacent straight heating wires (33). In the thickness direction of the evaporator assembly (100), the straight heating wire (33) is arranged opposite to the straight tube (13); in the height direction of the evaporator assembly (100), the arc heating wire (34) is located between two adjacent bends (14). And / or, the heating wire (30) is fixed to the first fin (12) and / or the second fin (22) by a straight heating wire (33).

7. The evaporator assembly (100) according to claim 1, characterized in that: The first evaporator (10) further includes a first fixing bracket (15) disposed on both sides of the width direction of the first evaporator tube (11), the second evaporator (20) further includes a second fixing bracket (25) disposed on both sides of the width direction of the second evaporator tube (21), and the evaporator assembly (100) further includes a connecting structure (50) connecting the first fixing bracket (15) and the second fixing bracket (25) located on the same side; And / or, the heating wire (30) is fixed at both ends along the width direction of the evaporator assembly (100) to the first fixing frame (15) or the second fixing frame (25). The first fixing frame (15) and the second fixing frame (25) are provided with a fixing groove (152), a snap-fit ​​wall (153) on both sides of the fixing groove (152), and a buffer groove (154) on the side of the snap-fit ​​wall (153) away from the fixing groove (152).

8. The evaporator assembly (100) according to claim 1, characterized in that: In the height direction of the evaporator assembly (100), the first fin (12) and the second fin (22) each include an upper fin located on the upper side and a lower fin located on the lower side. The lower fin occupies 15% to 20% of the height of the evaporator assembly (100), and in the width direction of the evaporator assembly (100), the distribution spacing of the lower fin is 5 mm to 20 mm.

9. The evaporator assembly (100) according to claim 1, characterized in that: In the height direction of the evaporator assembly (100), the heating wire (30) extends through the area where all the evaporator tubes are located, and within the height range covered by the heating wire (30), the heating power ratio of the upper half heating wire (30) to the lower half heating wire (30) is 1:2 to 1:2.

5.

10. A refrigeration device, comprising a housing and an evaporator chamber disposed within the housing, characterized in that: The refrigeration equipment further includes an evaporator assembly (100) as described in any one of claims 1-9, the evaporator assembly (100) being disposed in the evaporator chamber.

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