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, the evaporator assembly comprises a heating device, a first evaporator and a second evaporator, the first evaporator and the second evaporator are oppositely arranged, and each of the first evaporator and the second evaporator comprises an evaporation pipeline. The heating device comprises a first heating part and a second heating part, the first heating part is located between an evaporation pipeline of the first evaporator and an evaporation pipeline of the second evaporator, and the second heating part is fixed to the bottom of the first evaporator and makes contact with the first evaporator. Heat of the first heating part can be synchronously conducted to the first evaporator and the second evaporator, and frost on the two sides of the evaporator assembly can be efficiently melted. The heat of the second heating part is directly conducted to the bottom of the first evaporator, the bottom of the first evaporator can be heated and defrosted in a concentrated mode, and even if the amount of frost at the bottom of the evaporator assembly is large, defrosting can be rapidly 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 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. The air outlet in the refrigeration equipment usually faces one side of the evaporator. Due to the relatively concentrated airflow at the outlet, a large amount of frost tends to form at the location between the evaporator and the outlet. However, the low emissivity and heat transfer efficiency of the heating element result in long defrosting times and poor defrosting effectiveness. 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 and to achieve a better heating and defrosting effect for the parts of the evaporator with a large amount of frost.

[0005] To achieve one of the above objectives, the present invention provides an evaporator assembly for installation in a refrigeration device. The evaporator assembly includes a heating device and a first evaporator and a second evaporator disposed opposite to each other. Both the first evaporator and the second evaporator include evaporation pipes. The heating device includes a first heating part and a second heating part. The first heating part is located between the evaporation pipes of the first evaporator and the evaporation pipes of the second evaporator. The second heating part is fixed to the bottom of the first evaporator and is disposed in contact with the first evaporator.

[0006] As a further improvement of one embodiment of the present invention, the first evaporator further includes a plurality of first fins, the first fins being disposed on the evaporation pipe, the first fins located at the bottom of the first evaporator being provided with positioning grooves, and the second heating part being positioned in the positioning grooves.

[0007] As a further improvement of one embodiment of the present invention, the positioning groove opening is arranged downwards, and the second heating part is aligned with the evaporation pipe of the first evaporator in the height direction of the evaporator assembly.

[0008] As a further improvement of one embodiment of the present invention, the first evaporator further includes a first fixing bracket disposed on both sides of the width direction of the evaporation pipe. The first fixing bracket is provided with a fixing groove that matches the positioning groove, 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 opposite to the fixing groove.

[0009] As a further improvement of one embodiment of the present invention, the heating device is a heating wire, and the first heating part and the second heating part are integrally connected.

[0010] As a further improvement of one embodiment of the present invention, the first evaporator and the second evaporator have an overlapping area in their arrangement direction, the first heating part is arranged parallel to the first evaporator, and the first heating part passes through the overlapping area.

[0011] As a further improvement of one embodiment of the present invention, in the height direction of the evaporator assembly, the bottom of the first evaporator is lower than the bottom of the second evaporator, the first heating part passes through the overlapping area of ​​the first evaporator and the second evaporator, and the second heating part is fixed to the bottom of the first evaporator.

[0012] As a further improvement of one embodiment of the present invention, the second heating part is arranged along the thickness direction of the evaporator assembly, and the second heating part covers the evaporation pipes of the first evaporator and the second evaporator along the thickness direction of the evaporator assembly.

[0013] As a further improvement of one embodiment of the present invention, the first evaporator and the second evaporator are parallel to each other. The evaporation pipe in the first evaporator is a first evaporation pipe, and the evaporation pipe in the second evaporator is a second evaporation pipe. The first evaporator also includes a plurality of first fins fixed on the first evaporation pipe, and the second evaporator also includes a plurality of second fins fixed on the second evaporation pipe. The first fins and the second fins are separately arranged. The first heating part is a heating wire, which is disposed 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.

[0014] As a further improvement of one embodiment of the present invention, the second fin is provided with a slot for fixing the first heating part, the slot being open toward the first fin, and the first fin and the second fin being in contact with each other.

[0015] As a further improvement of one embodiment of this utility model, in both the first and second evaporators, the evaporation pipes extend in a serpentine bend and include straight pipes arranged parallel to each other vertically and bends connecting adjacent straight pipes. The first heating part is a heating wire extending in a serpentine bend and includes straight heating wires arranged parallel to each other vertically and arc heating wires connecting adjacent straight heating wires. In the thickness direction of the evaporator assembly, the straight heating wires are arranged opposite to the straight pipes of the evaporation pipes; in the height direction of the evaporator assembly, the arc heating wires are located between two adjacent bends.

[0016] To achieve one of the above objectives, one embodiment of the present invention provides a refrigeration device, including a housing, wherein a storage chamber and a cooling chamber are provided inside the housing and are separated 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, and the first evaporator is disposed closer to the air return outlet than the second evaporator.

[0017] Compared with existing technologies, in this invention, the heat from the first heating element can be simultaneously transferred to both the first and second evaporators, efficiently melting the frost on both sides of the evaporator assembly. Typically, in refrigeration equipment, the return air vent faces the bottom of the evaporator assembly, with the first evaporator positioned closer to the return air vent. Because there is more water vapor in the airflow at the return air vent, the bottom of the evaporator accumulates more frost. However, in this invention, the heat from the second heating element is directly transferred to the bottom of the first evaporator, concentrating heat on the bottom of the first evaporator for defrosting. Even with a large amount of frost on the bottom of the evaporator assembly, defrosting can be achieved quickly. Attached Figure Description

[0018] Figure 1 This is an isometric view of an evaporator assembly provided by this utility model;

[0019] Figure 2 This is a side view of an evaporator assembly provided by this utility model;

[0020] Figure 3 This is an isometric view of an evaporator assembly provided by this utility model from another perspective;

[0021] Figure 4 This is an isometric view of an evaporator assembly provided by this utility model from another perspective, in which the heating device structure is hidden;

[0022] Figure 5 yes Figure 4 Enlarged structural diagram of section A;

[0023] Figure 6This is a side view of an evaporator assembly in some embodiments, wherein the second heating portion is attached to the bottom of the first evaporator;

[0024] Figure 7 This is a side view of an evaporator assembly in some embodiments, wherein the second heating portion is arranged along the thickness direction of the evaporator assembly;

[0025] Figure 8 This is a side view of a partial structure of an evaporator assembly provided by this utility model, wherein two sets of evaporators completely overlap in the height direction;

[0026] Figure 9 This is a side view of a partial structure of an evaporator assembly in some embodiments, where two sets of evaporators do not completely overlap in the height direction.

[0027] Figure label:

[0028] 100. Evaporator assembly; 10. First evaporator; 11. First evaporation pipe; 111. Straight pipe; 112. Bend; 12. First fin; 121. Positioning groove; 13. First fixing bracket; 131. Fixing groove; 132. Snap-fit ​​wall; 133. Buffer groove; 134. First perforation; 135. Second perforation; 14. Second fixing bracket; 15. Connecting structure; 20. Second evaporator; 21. Second evaporation pipe; 22. Second fin; 221. Snap-fit ​​groove; 30. Heating device; 31. First heating part; 311. Straight heating wire; 312. Curved heating wire; 32. Second heating part; 33. Bending part. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] The following will refer to the appendix in the embodiments of this utility model. Figure 1 -9. The technical solutions in the embodiments of this utility model are clearly and completely described.

[0034] 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 air outlet of the refrigeration air duct faces the evaporator assembly 100.

[0035] The evaporator assembly 100 includes a first evaporator 10, a second evaporator 20, and a heating device 30. The first evaporator 10 and the second evaporator 20 are arranged opposite to each other, and the heating device 30 is used to heat and defrost the evaporator assembly 100.

[0036] Both the first evaporator 10 and the second evaporator 20 include evaporation pipes, and the heating device 30 includes a first heating section 31 and a second heating section 32. In the height direction of the evaporator assembly 100, the second heating section 32 is located below the first heating section 31.

[0037] The first heating element 31 is located between the evaporation pipes of the first evaporator 10 and the evaporation pipes of the second evaporator 20. The heat from the first heating element 31 can be synchronously transferred to the first evaporator 10 and the second evaporator 20, and the frost on both sides of the evaporator assembly 100 can be melted efficiently.

[0038] The second heating element 32 is fixed to the bottom of the first evaporator 10 and is positioned in contact with the first evaporator 10.

[0039] Typically, in refrigeration equipment, the return air vent is positioned towards the bottom of the evaporator assembly 100, with the first evaporator 10 positioned closer to the return air vent. Because the humidity of the airflow at the return air vent is higher, the amount of frost at the bottom of the evaporator is also greater. However, in this invention, the heat from the second heating element 32 is directly conducted to the bottom of the first evaporator 10, enabling concentrated heating and defrosting of the bottom of the first evaporator 10. Even with a large amount of frost at the bottom of the evaporator assembly 100, defrosting can be achieved quickly.

[0040] In the height direction of the evaporator assembly 100, the second heating section 32 is aligned with the evaporation pipe of the first evaporator 10. That is, the projection of the second heating section 32 and the first evaporation pipe 11 along the height direction of the evaporator assembly 100 coincides or partially coincides.

[0041] The cold air volume is relatively large at the location of the evaporation pipe, and the heat from the second heating section 32 can be transferred to the location of the evaporation pipe more quickly, which enhances the defrosting effect of the second heating section 32.

[0042] The first evaporator 10 also includes a plurality of first fins 12, which are spaced apart on the evaporation pipe and pass through the evaporation pipe. The first fins 12 are arranged along the extension direction of the evaporation pipe, and the evaporation pipe achieves heat exchange with the airflow through contact with the fins.

[0043] In this embodiment, the second heating part 32 is engaged and fixed to the first fin 12. As an example, the first fin 12 located at the bottom of the first evaporator 10 is provided with a positioning groove 121, the opening of the positioning groove 121 is arranged downward, and the second heating part 32 is positioned in the positioning groove 121.

[0044] The second heating element 32 is fixed to the bottom of the first fin 12 via a downward-opening positioning groove 121, allowing its heat to be directly conducted to the first fin 12 through the engaging connection with the positioning groove 121. The open positioning groove 121 facilitates the installation and fixation of the second heating element 32. The sidewall of the positioning groove 121 is arc-shaped to match the outer edge of the second heating element 32, ensuring a tight fit between the positioning groove 121 and the outer edge of the second heating element 32, thus efficiently transferring heat from the second heating element 32 to the first fin 12.

[0045] In some implementations, refer to Figure 6 The bottom of the first fin 12 may not have a positioning groove 121. The outer side of the second heating part 32 is attached to the bottom of the first fin 12, which can also achieve the heat transfer effect.

[0046] In some embodiments, the second heating portion 32 has a gap between the bottom of the first fin 12 and the gap size is not greater than the size of the second heating portion 32 in the height direction of the evaporator assembly 100, that is, the second heating portion 32 is suspended at the bottom of the first fin 12.

[0047] In some implementations, refer to Figure 7 A plurality of second heating portions 32 are arranged along the thickness direction of the evaporator assembly 100, and each of the plurality of second heating portions 32 is fixed to the first fin 12. Alternatively, the second heating portions 32 extend in the thickness direction of the evaporator assembly 100. The second heating portions 32 cover the area at the bottom of the two sets of evaporation pipes along the thickness direction of the evaporator assembly 100 to increase the heating efficiency of the heating device 30 at the bottom of the evaporator assembly 100.

[0048] The heating device 30 is a heating wire, and the first heating part 31 and the second heating part 32 are integrally connected.

[0049] The heating device 30 also includes a bent portion 33 connecting the first heating portion 31 and the second heating portion 32. One end of the bent portion 33 is connected to the first heating portion 31, and the other end is connected to the second heating portion 32. The heating wire is bent at the position of the bent portion 33, so that the second heating portion 32 is located on the lower side of the first evaporator 10, which facilitates the industrial manufacturing of the evaporator assembly 100.

[0050] In some embodiments, the first heating part 31 and the second heating part 32 can be set separately, and the bottom of the first evaporator 10 can be provided with a fixing structure for fixing the second heating part 32, which can be a connecting bracket or the like.

[0051] In some embodiments, the heating device 30 may be configured as a heating plate, with the first heating part 31 fixed to the first evaporator 10 and / or the second evaporator 20, and the second heating part 32 fixed to the bottom of the first evaporator 10.

[0052] The first evaporator 10 and the second evaporator 20 have an overlapping area in their arrangement direction, and the first heating part 31 is arranged parallel to the first evaporator 10 and extends through the overlapping area.

[0053] Along the height direction of the evaporator assembly 100, the first evaporator 10 and the second evaporator 20 can completely overlap or partially overlap. The first heating part 31 can heat and defrost the overlapping part of the first evaporator 10 and the second evaporator 20 to ensure the efficiency of heating and defrosting.

[0054] In some implementations, refer to Figure 8The first evaporator 10 and the second evaporator 20 completely overlap. That is, the top and bottom of the first evaporator 10 are flush, or the first evaporator 10 and the second evaporator 20 have a small misalignment in the height direction of the evaporator assembly 100, and the size of the misalignment is no more than 1 / 2 of the height of one fin.

[0055] In some implementations, refer to Figure 9 The first evaporator 10 and the second evaporator 20 partially overlap. Exemplarily, the bottom of the second evaporator 20 is higher than the bottom of the first evaporator 10, allowing the two sides of the bottom of the first evaporator 10 to directly contact the airflow. The area where the first heating element 31 is located covers the overlapping area of ​​the first evaporator 10 and the second evaporator 20, and the second heating element 32 is fixed to the bottom of the first evaporator 10. The increased contact area between the bottom of the first evaporator 10 and the airflow allows for more water vapor to be trapped at the bottom of the first evaporator 10, and, in conjunction with the second heating element 32, efficient defrosting can be achieved.

[0056] The evaporation pipe in the first evaporator 10 is the first evaporation pipe 11, and the first evaporator 10 also includes a number of first fins 12 fixed on the first evaporation pipe 11.

[0057] The evaporation pipe in the second evaporator 20 is the second evaporation pipe 21, and the second evaporator 20 also includes a number of second fins 22 fixed on the second evaporation pipe 21.

[0058] The first evaporation pipe 11 and the second evaporation pipe 21 are arranged parallel to each other. "Parallel" means that the planes in which the extension directions of the first evaporation pipe 11 and the second evaporation pipe 21 lie are parallel or substantially parallel. In this invention, both the first evaporation pipe 11 and the second evaporation pipe 21 extend along the width direction of the evaporator assembly 100 and are arranged along the height direction of the evaporator assembly 100. Furthermore, the first heating portion 31 is also parallel to the first evaporation pipe 11 and the second evaporation pipe 21.

[0059] The first fin 12 and the second fin 22 can be set separately or as a single unit.

[0060] In some embodiments, the first fin 12 and the second fin 22 are separate units, the first evaporator 10 and the second evaporator 20 are in contact with each other to transfer heat, and the two separate evaporators are easier to manufacture and assemble.

[0061] In some embodiments, 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.

[0062] The two sets of fins are arranged close together, and convection is generated between the two sets of evaporators. The heat from the first heating part 31 acting on one set of evaporators is conducted to the other set of evaporators through radiation, which achieves a good heat conduction effect.

[0063] In some embodiments, the first fin 12 and the second fin 22 are integrally formed. The two integrally formed fins have better heat conduction, improving the efficiency of heating and defrosting. The first heating element 31 is fixedly mounted on the fins.

[0064] In this embodiment, the first heating part 31 is a heating wire, and the first fin 12 and the second fin 22 are separately disposed and in contact with each other. The first heating part 31 is disposed 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.

[0065] In some embodiments, the first heating portion 31 is fixed to the side of the first fin 12 facing the second fin 22.

[0066] In some embodiments, the first heating portion 31 is fixed to the side of the second fin 22 facing the first fin 12.

[0067] In some embodiments, along the thickness direction of the evaporator assembly 100, the first heating portion 31 is fixed at a position opposite to the first fin 12 and the second fin 22, and the heat from the first heating portion 31 is synchronously conducted to the first fin 12 and the second fin 22.

[0068] In some embodiments, the first heating portion 31 includes a first region located on the upper side and a second region located on the lower side. The first heating portion 31 in the first region and the second region is respectively fixed to the side of the first fin 12 facing the second fin 22 or the side of the second fin 22 facing the first fin 12.

[0069] In the first fin 12 and the second fin 22, the fin used to fix the first heating part 31 is provided with a slot 221, and the first heating part 31 is fixed to the fin through the slot 221. As an example, in this embodiment, the first heating part 31 is fixed to the side of the second fin 22 facing the first fin 12.

[0070] The second fin 22 is provided with a slot 221, which is open to the first fin 12. The first heating part 31 is fixed by the slot 221, making the assembly of the evaporator assembly 100 more convenient. The heat of the first heating part 31 is conducted to the first fin 12 through the second fin 22, which can realize synchronous heating and defrosting of the first evaporator 10 and the second evaporator 20.

[0071] In the first evaporator 10 and the second evaporator 20, the evaporation pipes are both extended in a serpentine bend and include straight pipes 111 arranged in parallel vertically and bent pipes 112 connecting adjacent straight pipes 111.

[0072] The first heating section 31 is a heating wire that extends in a serpentine bend, and includes straight heating wires 311 arranged in parallel vertically and curved heating wires 312 connecting adjacent straight heating wires 311.

[0073] In the thickness direction of the evaporator assembly 100, the linear heating wire 311 is arranged opposite to the straight tube 111 of the evaporation pipeline; in the height direction of the evaporator assembly 100, the arc heating wire 312 is located between two adjacent bends 112.

[0074] The fact that the linear heating wire 311 and the straight tube 111 are arranged opposite each other means that the linear heating wire 311 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 311 and the arc heating wire 312 can focus on heating the more prone to frost formation in the evaporator assembly 100 for precise and efficient defrosting.

[0075] The evaporator assembly 100 also includes a fixing bracket disposed on both sides of the width direction of the two sets of evaporator tubes, and a connecting structure 15 connecting the fixing brackets on the same side.

[0076] The mounting bracket 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 two parallel first mounting brackets 13 and two parallel second mounting brackets 14. The first mounting brackets 13 and the second mounting brackets 14 located on the same side of the evaporator assembly 100 are close to each other and arranged side by side, and the mounting brackets located on both sides of the evaporator assembly 100 are parallel.

[0077] The connecting structure 15 can be a connecting rod, connecting plate, or other structure that serves to connect and fix the components. The connecting structure 15 can be fixedly connected to the first fixing frame 13 and the second fixing frame 14 on the same side using fasteners such as bolts or screws.

[0078] The first fixing frame 13 is provided with a fixing groove 131 that matches the positioning groove 121, snap-fit ​​walls 132 located on both sides of the fixing groove 131, and a buffer groove 133 located on the side of the snap-fit ​​wall 132 facing away from the fixing groove 131. The fixing groove 131 corresponds to the position of the second heating part 32 in the heating device 30. The shape and size of the fixing groove 131 match the shape and size of the positioning groove 121. The fixing groove 131 can further fix and limit the second heating part 32.

[0079] The buffer groove 133 provides elastic deformation space for the snap-fit ​​walls 132 on both sides of the fixing groove 131, allowing a certain dimensional assembly error between the second heating part 32 and the fixing groove 131. The snap-fit ​​walls 132 can be tightly engaged with the second heating part 32, while also ensuring smooth assembly between the second heating part 32 and the first fixing frame 13.

[0080] The mounting bracket is provided with a first through hole 134 and a second through hole 135. Straight pipes 111 or bent pipes 112 in the first evaporation pipe 11 and the second evaporation pipe 21 can be connected to the first through hole 134. The position of the second through hole 135 corresponds to the position of the slot 221, and the linear heating wire 311 or the arc heating wire 312 is fixed to the mounting bracket through the second through hole 135. The mounting bracket can also be provided with the aforementioned snap-fit ​​wall and buffer groove structure at the position of the second through hole 135, making the connection between the heating device 30 and the mounting bracket more secure.

[0081] The fixing bracket and fins serve to fix and limit the evaporation pipes and heating wires, making the evaporation pipes and heating wires more secure.

[0082] 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.

[0083] 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.

[0084] The refrigeration equipment also includes the aforementioned evaporator assembly 100, which is disposed within the cooling chamber. The refrigerant evaporates within the evaporation pipes, absorbing heat from the cooling chamber, thus lowering the temperature of the air within the cooling 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 cooling chamber through the return air inlet, achieving circulating heat exchange and refrigeration.

[0085] The first evaporator 10 is positioned closer to the return air inlet than the second evaporator 20, with the return air inlet facing the bottom of the first evaporator 10. Because the humidity of the airflow at the return air inlet is higher, the amount of frost on the bottom of the first evaporator 10 is also greater. However, in this invention, the heat from the second heating element 32 is directly conducted to the bottom of the first evaporator 10, allowing for concentrated heating and defrosting of the bottom of the first evaporator 10. Even with a large amount of frost on the bottom of the evaporator assembly 100, defrosting can be achieved quickly.

[0086] 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: The evaporator assembly (100) includes a heating device (30) and a first evaporator (10) and a second evaporator (20) disposed opposite to each other. Both the first evaporator (10) and the second evaporator (20) include evaporation pipes. The heating device (30) includes a first heating part (31) and a second heating part (32). The first heating part (31) is located between the evaporation pipes of the first evaporator (10) and the evaporation pipes of the second evaporator (20). The second heating part (32) is fixed to the bottom of the first evaporator (10) and is disposed in contact with the first evaporator (10).

2. The evaporator assembly (100) according to claim 1, characterized in that: The first evaporator (10) further includes a plurality of first fins (12), the first fins (12) are inserted through the evaporation pipe, and the first fins (12) located at the bottom of the first evaporator (10) are provided with positioning grooves (121), and the second heating part (32) is positioned in the positioning grooves (121).

3. The evaporator assembly (100) according to claim 2, characterized in that: The positioning groove (121) is set with its opening facing downwards, and in the height direction of the evaporator assembly (100), the second heating part (32) is aligned with the evaporation pipe of the first evaporator (10).

4. The evaporator assembly (100) according to claim 2, characterized in that: The first evaporator (10) further includes a first fixing bracket (13) disposed on both sides of the width direction of the evaporation pipe. The first fixing bracket (13) is provided with a fixing groove (131) that matches the positioning groove (121), a snap-fit ​​wall (132) located on both sides of the fixing groove (131), and a buffer groove (133) located on the side of the snap-fit ​​wall (132) away from the fixing groove (131).

5. The evaporator assembly (100) according to claim 1, characterized in that: The heating device (30) is a heating wire, and the first heating part (31) and the second heating part (32) are integrally connected.

6. The evaporator assembly (100) according to claim 1, characterized in that: The first evaporator (10) and the second evaporator (20) have an overlapping area in their arrangement direction, the first heating part (31) is arranged parallel to the first evaporator (10), and the first heating part (31) extends through the overlapping area.

7. The evaporator assembly (100) according to claim 1, characterized in that: In the height direction of the evaporator assembly (100), the bottom of the first evaporator (10) is set lower than the bottom of the second evaporator (20), the area where the first heating part (31) is located covers the overlapping area of ​​the first evaporator (10) and the second evaporator (20), and the second heating part (32) is fixed to the bottom of the first evaporator (10).

8. The evaporator assembly (100) according to claim 1, characterized in that: The second heating part (32) is arranged along the thickness direction of the evaporator assembly (100), and the second heating part (32) covers the evaporation pipes of the first evaporator (10) and the second evaporator (20) along the thickness direction of the evaporator assembly (100).

9. The evaporator assembly (100) according to claim 1, characterized in that: The first evaporator (10) and the second evaporator (20) are parallel to each other. The evaporation pipe in the first evaporator (10) is the first evaporation pipe (11), and the evaporation pipe in the second evaporator (20) is the second evaporation pipe (21). The first evaporator (10) also includes a plurality of first fins (12) fixed on the first evaporation pipe (11), and the second evaporator (20) also includes a plurality of second fins (22) fixed on the second evaporation pipe (21). The first fins (12) and the second fins (22) are separately arranged. The first heating part (31) is a heating wire, and is arranged on the first fin (12), or on the second fin (22), or between the first fin (12) and the second fin (22), or partly arranged on the first fin (12) and partly arranged on the second fin (22). And / or, the second fin (22) is provided with a slot (221) for fixing the first heating part (31), the slot (221) is open to the first fin (12), and the first fin (12) and the second fin (22) are in contact with each other; And / or, in the first evaporator (10) and the second evaporator (20), the evaporation pipes extend in a serpentine bend and include straight pipes (111) arranged vertically and horizontally, and bends (112) connecting adjacent straight pipes (111). The first heating part (31) is a heating wire extending in a serpentine bend and includes straight heating wires (311) arranged vertically and horizontally, and arc heating wires (312) connecting adjacent straight heating wires (311). In the thickness direction of the evaporator assembly (100), the straight heating wires (311) are arranged opposite to the straight pipes (111) of the evaporation pipes; in the height direction of the evaporator assembly (100), the arc heating wires (312) are located between two adjacent bends (112).

10. 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 1-9, the evaporator assembly (100) being disposed within the cooling chamber, and the first evaporator (10) being disposed closer to the return air inlet than the second evaporator (20).

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