Refrigerator

Abstract

The embodiment of the utility model relates to the field of household appliances, in particular to a refrigerator, which comprises a compartment, a refrigerator door and a refrigerator door, the air duct assembly (2) is mounted in the compartment to form an air duct; the evaporator (3) is mounted in the air duct and is suitable for carrying out heat exchange on airflow flowing through the evaporator; the fan is used for driving air to flow into the evaporator (3) from the air inlet end of the evaporator (3) and leave the evaporator (3) from the air outlet end (300) of the evaporator (3); and the wind shielding structure (A) is arranged at the downstream of the air outlet end (300) of the evaporator (3) and is configured to be suitable for enabling part of air flow leaving the evaporator (3) from the air outlet end (300) to flow back to the evaporator (3). According to the technical scheme of the embodiment of the utility model, part of air flow leaving the evaporator can flow back into the evaporator by means of the wind shielding structure, heat exchange is more sufficient in the evaporator, and frosting in the evaporator is more uniform, so that the refrigeration efficiency of the refrigerator can be improved, and the energy consumption can be reduced.

Description

Technical Field

[0001] The embodiments of this utility model relate to the field of household appliances, and more specifically to a refrigerator. Background Technology

[0002] Frost-free refrigerators typically use finned evaporators to cool the air. The cooled air enters the refrigerator compartment through the air vents to cool the food inside, and then returns to the evaporator through the air return vents to be cooled again, thus creating a cycle.

[0003] The air inside a refrigerator often becomes humid due to stored food or exchange with external heat and moisture. When this humid air passes through the dry, low-temperature evaporator area, the moisture in the air condenses and forms frost, adhering to the evaporator surface. As the refrigerator continues to run, the frost layer on the evaporator surface gradually thickens. This thickened frost layer increases air resistance, reducing airflow within the duct, and also increases heat exchange resistance, reducing heat transfer capacity. This leads to increased energy consumption and negatively impacts the user experience. Therefore, frost-free refrigerators typically also use a heater to automatically defrost the evaporator in an effort to achieve low energy consumption and high cooling efficiency.

[0004] However, in current refrigerators, due to unavoidable manufacturing and assembly tolerances, a gap is usually left between the evaporator and the inner wall of the refrigerator. When this gap is too large, due to the air resistance caused by the frost layer inside the evaporator, most of the air will flow through the gap and bypass the evaporator, which has greater air resistance, resulting in a significant reduction in heat exchange efficiency. Conversely, when the gap is very small, the increased air resistance will generate noise as the air flows through, similarly affecting the user experience. Furthermore, if moisture in the air frosts within this gap, the heater will be unable to effectively defrost it, further increasing air resistance, reducing airflow within the duct, and potentially damaging the entire refrigeration system. Utility Model Content

[0005] The purpose of this invention is to provide a refrigerator. At least one embodiment of this invention can at least partially overcome the aforementioned deficiencies in the prior art.

[0006] According to one embodiment of the present invention, a refrigerator is provided, the refrigerator comprising:

[0007] Room;

[0008] A duct assembly, which is installed in the room to form a duct;

[0009] An evaporator, installed within the duct, is adapted to exchange heat with the airflow passing through it;

[0010] a fan for driving air from an air inlet end of the evaporator into the evaporator and out of an air outlet end of the evaporator; and

[0011] a wind blocking structure arranged downstream of the air outlet end of the evaporator and configured to be adapted to cause a portion of the air flow exiting the evaporator from the air outlet end to flow back into the evaporator.

[0012] By this embodiment, a portion of the air flow exiting the evaporator can be caused to flow back into the evaporator by means of the wind blocking structure to perform heat exchange again within the evaporator, particularly in the upper portion of the evaporator, so that the frosting within the evaporator is more uniform, which is beneficial to improve the heat exchange efficiency and reduce the wind resistance, thereby being able to improve the refrigeration efficiency of the refrigerator while reducing the energy consumption.

[0013] The extension and improvement schemes of the technical solution of the utility model are known from the following optional embodiments.

[0014] According to an optional embodiment of the refrigerator of the utility model, the wind blocking structure is located adjacent downstream of the air outlet end of the evaporator. By this embodiment, it is beneficial to cause the air flow to flow back into the evaporator to perform sufficient heat exchange.

[0015] According to an optional embodiment of the refrigerator of the utility model, the wind blocking structure is a protruding structure protruding from the inner wall of the compartment and / or the air duct assembly towards the inside of the air duct. By this embodiment, not only is it convenient to manufacture or install the wind blocking structure, but also the air flow flowing through the assembly gap between the evaporator and the inner wall of the compartment and / or the evaporator and the air duct assembly can be caused to flow back into the evaporator to perform heat exchange, thereby further improving the heat exchange efficiency and achieving uniform frosting.

[0016] According to an optional embodiment of the refrigerator of the utility model, the wind blocking structure comprises a strip-shaped protruding structure extending along the rear wall of the compartment in the transverse direction of the refrigerator and protruding towards the air duct assembly. By this embodiment, the air flow flowing through the assembly gap between the evaporator and the rear wall of the compartment can be caused to flow back into the evaporator to perform heat exchange in the transverse direction of the refrigerator, thereby further improving the heat exchange efficiency and achieving uniform frosting.

[0017] According to an optional embodiment of the refrigerator of the utility model, the wind blocking structure protrudes to an extent of overlapping with the air outlet end in the main air flow direction from the air inlet end of the evaporator to the air outlet end. Thus, the wind blocking structure can partially block the air flow exiting from the air outlet end of the evaporator, and more air flow can flow back into the evaporator to perform more sufficient heat exchange and more uniform frosting.

[0018] According to an optional embodiment of the refrigerator of the utility model, the minimum distance between the air baffle structure and each part of the evaporator is greater than or equal to 1mm. Through the embodiment, the air flow leaving the evaporator can be appropriately made to flow back into the evaporator while avoiding contact between the air baffle structure and the evaporator to generate resonance noise.

[0019] According to an optional embodiment of the refrigerator of the utility model, the minimum distance between the air baffle structure and the air outlet end is proportional to the overlapping distance between the air baffle structure in the protruding direction and the air outlet end. Through the embodiment, appropriate air resistance can be manufactured to make appropriate air flow flow back into the evaporator to perform more sufficient heat exchange and more uniform frosting, and avoid too low air resistance leading to too little backflow or too high air resistance generating noise.

[0020] According to an optional embodiment of the refrigerator of the utility model, on the cross section perpendicular to the extension direction of the air baffle structure, the air baffle structure has a substantially conical taper gradually tapering away from the rear wall of the compartment, and the two edges of the taper and the rear wall of the compartment form obtuse angles. Through the embodiment, on the one hand, the air baffle structure can utilize the inclined surface facing the air outlet end of the evaporator to make part of the air flow flow back into the evaporator, and on the other hand, the air baffle structure can utilize another inclined surface to guide the liquid such as water existing above the air baffle structure into the evaporator, avoiding the liquid such as water entering the gap between the evaporator and the rear wall of the compartment and frosting to block the gap.

[0021] According to an optional embodiment of the refrigerator of the utility model, the air baffle structure is a protruding section integrally protruding from the rear wall of the compartment. Through the embodiment, the air baffle structure can be formed together with the rear wall of the compartment, and the assembly of the refrigerator is facilitated.

[0022] According to an optional embodiment of the refrigerator of the utility model, the air baffle structure is a protruding strip component attached to the rear wall of the compartment. Through the embodiment, the air baffle structure and its installation position can be flexibly selected or replaced.

[0023] According to an optional embodiment of the refrigerator of the utility model, the side of the evaporator facing the rear wall of the compartment and the rear wall of the compartment have at least a first gap.

[0024] According to an optional embodiment of the refrigerator of the utility model, the value of the first gap is 4mm-6mm.

[0025] According to an optional embodiment of the refrigerator of the utility model, along the main air flow direction, the distance between the side of the evaporator and the rear wall of the compartment gradually decreases to the first gap in a stepped manner and / or in an inclined manner.

[0026] According to an optional embodiment of the refrigerator of the utility model, the rear wall of the chamber is formed with at least one step portion, so that the side of the evaporator and the rear wall of the chamber further have at least a second gap larger than the first gap.

[0027] According to an optional embodiment of the refrigerator of the utility model, the step height of the step portion is 1mm-3mm.

[0028] According to an optional embodiment of the refrigerator of the utility model, at least in the rear wall section opposite to the evaporator, the rear wall of the chamber comprises an inclined wall close to the evaporator along the main airflow direction.

[0029] According to an optional embodiment of the refrigerator of the utility model, the maximum gap distance between the rear wall of the chamber and the side of the evaporator is less than or equal to 10mm.

[0030] According to an optional embodiment of the refrigerator of the utility model, the evaporator and the air duct assembly have at least a third gap, and the third gap is smaller than the first gap.

[0031] According to an optional embodiment of the refrigerator of the utility model, the third gap is greater than or equal to 1mm.

[0032] According to an optional embodiment of the refrigerator of the utility model, the evaporator is a fin evaporator, which at least comprises an evaporating pipe and a plurality of fin groups arranged on the evaporating pipe, the evaporating pipe and the plurality of fin groups are arranged to constitute a plurality of evaporator sections arranged along a main airflow direction from an air inlet end of the evaporator to an air outlet end, and along the main airflow direction, the spacing between fins sequentially decreases according to the evaporator sections.

[0033] According to an optional embodiment of the refrigerator of the utility model, the position of each step portion of the rear wall of the chamber corresponds to the abutment between the corresponding two evaporator sections among the plurality of evaporator sections.

[0034] According to an optional embodiment of the refrigerator of the utility model, at least in the evaporator section in which the spacing between fins in the plurality of evaporator sections is the smallest, the spacing between the evaporator and the rear wall of the chamber is the first gap.

[0035] Further features of the present utility model are apparent from the claims, the description and the drawings. The features and feature combinations mentioned in the above description and in the attached claims and those mentioned in the following description of the attached drawings, and / or shown in the drawings alone or in combination, can be further used in any combination, except where it is evident that such a use is impossible, without departing from the scope of the present utility model. The following is therefore considered as being covered by the present utility model and disclosed: what is not explicitly shown in the drawings and not explicitly explained, but results from combinations of features taken from the explained content and resulting from these combinations. The following is also considered as being disclosed: what does not have all the features of the originally drafted independent claim. Furthermore, the following is considered as being disclosed in particular by the above content: what goes beyond or deviates from the feature combination defined in the reference relationship of the claims. BRIEF DESCRIPTION OF DRAWINGS

[0036] The principles, features and advantages of the present utility model will be better understood by the following description of the utility model with reference to the drawings. The drawings comprise:

[0037] Figure 1 schematically shows a partially exploded perspective view of an inner wall of a compartment of a refrigerator, an evaporator and a duct assembly according to one embodiment of the present utility model;

[0038] Figure 2 schematically shows a front view of an evaporator installation state of a refrigerator according to one embodiment of the present utility model, wherein the illustration of the duct assembly is omitted;

[0039] Figure 3 schematically shows a side view cross-sectional view of an evaporator installation state of a refrigerator according to one embodiment of the present utility model;

[0040] Figure 4 shows the part in the dashed line frame in Figure 3 in an enlarged manner;

[0041] Figure 5 shows the part in the dashed line frame in Figure 4 in an enlarged manner; and

[0042] Figure 6 schematically shows an evaporator of a refrigerator according to one embodiment of the present utility model.

[0043] LIST OF REFERENCE NUMBERS

[0044] 1 inner wall of a compartment

[0045] 10 rear wall of a compartment

[0046] 11 step portion

[0047] 2 duct assembly

[0048] 21 front cover

[0049] 22 rear cover

[0050] 23 thermal insulation material

[0051] 3 evaporator

[0052] 300 air outlet end

[0053] 30 connecting pipe

[0054] 31 evaporating pipe

[0055] 32 fin group

[0056] A wind barrier structure

[0057] X protruding direction

[0058] Y extending direction

[0059] Z main airflow direction

[0060] d1 minimum distance between the wind barrier structure and the air outlet end

[0061] d2 overlapping distance between the wind barrier structure and the air outlet end in the protruding direction

[0062] t1 first gap

[0063] t2 second gap

[0064] t3 third gap

[0065] S1, S2, S3 evaporator section DETAILED DESCRIPTION

[0066] In order to make the technical problems, technical solutions and beneficial technical effects to be solved by the utility model more clearly understood, the utility model will be further described in detail below in combination with the drawings and multiple exemplary embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the protection scope of the utility model. It should be pointed out that the directional terms used in the description refer to the conventional use state of the stacked installation assembly for the clothes treatment device, so as to facilitate the description, and cannot be understood as the absolute limitation of the corresponding features.

[0067] Figure 1 a partially exploded perspective view of the inner wall 1, the air duct assembly 2 and the evaporator 3 of the compartment of the refrigerator according to one embodiment of the utility model is schematically shown, Figure 2A front view of the installation state of the evaporator 3 of the refrigerator according to one embodiment of the present application is schematically shown, wherein the illustration of the air duct assembly 2 is omitted, Figure 3 A side view cross-section of the installation state of the evaporator 3 of the refrigerator according to one embodiment of the present application is schematically shown, Figure 4 A part in the dashed box in Figure 3 is shown in an enlarged view, Figure 5 A part in the dashed box in Figure 4 is shown in an enlarged view, and Figure 6 An evaporator 3 of a refrigerator according to one embodiment of the present application is schematically shown.

[0068] As shown in Figures 1 to 6 , a refrigerator according to one embodiment of the present application comprises an inner wall 1 of a compartment defining a compartment of the refrigerator, an air duct assembly 2 installed in the compartment to form an air duct, and an evaporator 3 and a fan (not shown) installed in the air duct, the fan being configured to drive air to flow through the evaporator 3 in the air duct, and the evaporator being configured to exchange heat with the air flowing therethrough. The air duct assembly 2 comprises a front cover 21, a rear cover 22 and a thermal insulation material 23 assembled together, and the evaporator 3 is assembled with a fixing member made of, for example, foam, plastic or the like to form an evaporator assembly. In the assembly, the evaporator assembly and the fan are first assembled into the compartment such that a large area of one side of the evaporator 3 faces the rear wall 10 of the compartment, and then the assembled air duct assembly 2 is assembled to the inner wall 1 of the compartment.

[0069] As shown in Figure 2 and Figure 6 , the evaporator 3 is a finned evaporator comprising at least an evaporating pipe 31, a connecting pipe 30 connected to the evaporating pipe 31, and a plurality of fin groups 32 arranged on the evaporating pipe 31. The evaporating pipe 31 and the plurality of fin groups 32 are arranged to constitute a plurality of evaporator sections S1, S2, S3 arranged in a main air flow direction Z from an air inlet end to an air outlet end 300 of the evaporator 3, and the spacing between the fins decreases sequentially along the main air flow direction Z according to the evaporator sections S1, S2, S3. In this way, as the air sequentially flows through the evaporator sections S1, S2, S3, the contact area between the air and the fins gradually increases, frost formation at the bottom evaporator section S1 is reduced, and frost formation occurs more at the middle and top evaporator sections S2, S3, thus making the frost formation in the evaporator 3 more uniform by the configuration of the evaporator 3 itself, and improving the heat exchange efficiency.

[0070] Since the inner wall 1 of the compartment is usually made of plastic, and the fins of the evaporator 3 are made of metal, and due to inevitable manufacturing and assembly tolerances, the evaporator 3 and the inner wall 1 of the compartment usually have an assembly gap therebetween instead of being designed and assembled to directly contact or even be pressed against each other. Therefore, as shown in Figure 4 and Figure 5As shown, there is at least a first gap tl between the side of the evaporator 3 facing the rear wall 10 of the chamber and the rear wall 10 of the chamber. As mentioned above, the value of the first gap should not be too large or too small, and in a preferred embodiment according to the present application, the value of the first gap tl is set to 4mm-6mm, so that neither a large amount of air bypasses the evaporator 3 to greatly affect the heat exchange efficiency, nor a large whistling sound or whistle is produced when the air flows rapidly.

[0071] In an alternative embodiment, the distance between the side of the evaporator 3 and the rear wall 10 of the chamber gradually decreases to the first gap tl in a stepped manner along the main airflow direction Z. For example, the rear wall 10 of the chamber is formed with at least one step portion 11, so that there is also at least a second gap t2 larger than the first gap tl between the side of the evaporator 3 and the rear wall 10 of the chamber. In this way, the distance between the evaporator 3 and the rear wall 10 of the chamber decreases in a stepped manner along the main airflow direction Z, so that part of the gas can bypass the bottom evaporator section and enter the interior of the evaporator 3 at the middle and upper evaporator sections, thereby effectively utilizing the heat exchange area within the evaporator 3, enabling uniform frosting within the evaporator 3, and further improving the heat exchange efficiency.

[0072] More preferably, the position of each step portion 11 of the rear wall 10 of the chamber corresponds to the abutment between the corresponding two evaporator sections among the plurality of evaporator sections S1, S2, S3. For example, in the embodiment shown in Figure 4 a step portion 11 is shown schematically, which can correspond to the abutment between the evaporator section S1 and the evaporator section S2, or the abutment between the evaporator section S2 and the evaporator section S3. The rear wall 10 of the chamber can also include two such step portions 11, which correspond to the two abutments between the three evaporator sections S1, S2, S3, respectively. Furthermore, it is preferable that, at least in the evaporator section with the smallest distance between the fins among the plurality of evaporator sections S1, S2, S3, for example, shown here as the evaporator section S3, the distance between the evaporator 3 and the rear wall 10 of the chamber is the first gap tl. In this way, by making the distance between the evaporator 3 and the rear wall 10 of the chamber correspond to the evaporator sections, i.e., the smaller the distance between the fins in the evaporator section, the smaller the gap between the evaporator 3 and the rear wall 10 of the chamber, the heat exchange area within the evaporator 3 can be further effectively utilized to improve the heat exchange efficiency.

[0073] Preferably, the step height of the step portion is 1mm-3mm, and the maximum gap distance between the rear wall 10 of the chamber and the side of the evaporator 3 is less than or equal to 10mm.

[0074] In another alternative embodiment, along the main airflow direction Z, the distance between one side of the evaporator 3 and the rear wall 10 of the compartment can gradually decrease in an inclined manner to a first gap t1. For example, at least in the rear wall section opposite the evaporator 3, the rear wall 10 of the compartment includes an inclined wall that approaches the evaporator 3 along the main airflow direction Z. This inclined wall can be distributed throughout the entire rear wall section opposite the evaporator 3, such that the distance between the rear wall 10 of the compartment and the evaporator 3 is the first gap t1 only at the position corresponding to the outlet end 300 of the evaporator 3. This inclined wall can also exist only in a portion of the rear wall section, such that for the evaporator section with the smallest fin spacing, the distance between the evaporator 3 and the rear wall 10 of the compartment is the first gap t1, while outside this section, the distance between the evaporator 3 and the rear wall 10 of the compartment gradually decreases in an inclined manner to the first gap t1.

[0075] Furthermore, there is at least a third gap t3 between the evaporator 3 and the air duct assembly 2. Since the other side of the evaporator 3 faces the soft heat-insulating material 23 of the air duct assembly 2, such as that made of sponge, the third gap t3 can be smaller than the first gap t1. Preferably, the third gap t3 is greater than or equal to 1 mm.

[0076] Based on the above structure, in order to further utilize the heat exchange area within the evaporator 3, to achieve more uniform frosting and improve heat exchange efficiency, especially as Figure 2 , Figure 4 and Figure 5 As shown, the refrigerator according to an embodiment of the present invention also includes a windbreak structure A, which is arranged downstream of the outlet end 300 of the evaporator 3, preferably adjacent to the outlet end 300 of the evaporator 3, and configured to allow a portion of the airflow leaving the evaporator 3 from the outlet end 300 to flow back into the evaporator 3, thereby exchanging heat again in the evaporator 3.

[0077] The wind baffle structure A can be a protruding structure extending from the inner wall 1 of the compartment and / or the air duct assembly 2 toward the interior of the air duct. In this way, the wind baffle structure A can appropriately block the assembly gap between the evaporator 3 and the inner wall 1 of the compartment and / or the assembly gap between the evaporator 3 and the air duct assembly 2 near the downstream of the air outlet 300, so that the airflow flowing through each assembly gap can enter the evaporator 3 to exchange heat with the evaporator 3, thereby improving the heat exchange efficiency.

[0078] Preferably, such as Figures 2 to 5As shown, the wind blocking structure A includes a strip-shaped protruding structure extending along the rear wall 10 of the compartment in the lateral direction (extending direction Y) of the refrigerator and protruding (protruding in the protruding direction X) towards the air duct assembly 2, by means of such a wind blocking structure A, even if there is at least a larger first gap t1 between the evaporator 3 and the rear wall 10 of the compartment compared with the third gap t3 described above, the airflow flowing through the first gap t1 can be sufficiently backflowed into the evaporator 3 in the lateral direction of the refrigerator to exchange heat.

[0079] Preferably, as shown in Figure 4 and Figure 5 , the wind blocking structure A protrudes to an extent of overlapping with the air outlet end 300 in the main airflow direction Z from the air inlet end of the evaporator 3 to the air outlet end 300. Such a wind blocking structure A not only can sufficiently backflow the airflow flowing out of the first gap t1 into the evaporator 3, but also can partially block the airflow leaving from the air outlet end 300 of the evaporator 3, thereby ensuring more airflow backflowing into the evaporator 3 to exchange heat more sufficiently and frost more evenly, because it also directly blocks part of the airflow flowing through the evaporator 3 near the air outlet end 300 of the evaporator 3.

[0080] Preferably, the minimum distance between the wind blocking structure A and each part of the evaporator 3 is greater than or equal to 1 mm. For example, in the example shown in Figure 5 , the minimum distance d1 between the wind blocking structure A and the air outlet end 300 of the evaporator 3 is greater than or equal to 1 mm; the minimum distance between the farthest point of the wind blocking structure A protruding in the protruding direction X and the connecting pipe 30 of the evaporator 3 is greater than or equal to 1 mm, i.e. both the minimum distance in the X direction and the minimum distance in the Z direction are greater than or equal to 1 mm. Of course, the minimum distance between the wind blocking structure A and other possible parts of the evaporator 3 not shown is also greater than or equal to 1 mm. The size of the wind blocking structure A is thus limited because it is necessary to avoid any contact between the wind blocking structure A and the evaporator 3 to generate resonance noise, affecting the user experience of the refrigerator.

[0081] Further preferably, as shown in Figure 5 , the minimum distance d1 between the wind blocking structure A and the air outlet end 300 is proportional to the overlapping distance d2 between the wind blocking structure A and the air outlet end 300 in the protruding direction X. In other words, the more the wind blocking structure A protrudes towards the inside of the air duct, the greater the overlapping distance d2 between the wind blocking structure A and the air outlet end 300, and the greater the minimum distance d1 between the wind blocking structure A and the air outlet end 300, so that an appropriate wind resistance can be generated to make an appropriate amount of airflow backflow into the evaporator 3 to exchange heat more sufficiently and frost more evenly, avoiding too little backflow due to too low wind resistance or too much noise due to too high wind resistance.

[0082] Preferably, the wind barrier A has a substantially conical shape tapering as it protrudes away from the rear wall 10 of the compartment, with both edges of the conical shape forming an obtuse angle with the rear wall 10 of the compartment. As the wind barrier A has such a conical cross-sectional shape, the airflow at the lower side of the wind barrier A can be shielded by the slope at the lower side of the wind barrier A back into the evaporator 3 for further heat exchange, while the liquid such as water above the wind barrier A can also flow into the evaporator 3 along the slope at the upper side of the wind barrier A, instead of accumulating on the wind barrier A or flowing into the assembly gap between the evaporator 3 and the rear wall 10 of the compartment, and the water flowing into the assembly gap is likely to partially freeze to cause greater wind resistance or even block the gap, greatly reducing the heat exchange efficiency or even damaging the entire refrigeration system of the refrigerator.

[0083] Preferably, the wind barrier A is an integrally protruding section of the rear wall 10 of the compartment, so that the wind barrier can be formed together with the rear wall of the compartment, and the assembly of the refrigerator is facilitated. Alternatively, the wind barrier A can also be a protruding strip component attached to the rear wall 10 of the compartment, so that the wind barrier and its installation position can be flexibly selected or replaced.

[0084] Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the present disclosure, even if a single embodiment is described with respect to a particular feature. The features provided in the present disclosure are intended to be illustrative rather than limiting, unless otherwise stated. In actual implementation, a plurality of features can be combined with each other as needed, as long as it is technically feasible. Various alternatives, modifications and improvements can also be conceived without departing from the spirit and scope of the present disclosure.

Claims

1. A refrigerator characterized by comprising: The refrigerator comprises: a chamber; an air duct assembly (2) installed in the chamber to form an air duct; an evaporator (3) installed in the air duct and adapted to exchange heat with air flow passing through the evaporator; a fan for driving air to flow from an air inlet end of the evaporator (3) into the evaporator (3) and to flow from an air outlet end (300) of the evaporator (3) out of the evaporator (3); and a wind blocking structure (A) arranged downstream of the air outlet end (300) of the evaporator (3) and configured to be adapted to make part of the air flow leaving the evaporator (3) from the air outlet end (300) backflow to the evaporator (3).

2. The refrigerator according to claim 1, wherein the wind blocking structure (A) is located adjacent downstream of the air outlet end (300) of the evaporator (3); and / or the wind blocking structure (A) is a protruding structure protruding from an inner wall (1) of the chamber and / or the air duct assembly (2) towards the inside of the air duct.

3. The refrigerator according to claim 1 or 2, wherein the wind blocking structure (A) comprises a strip-shaped protruding structure extending along a rear wall (10) of the chamber in a transverse direction of the refrigerator and protruding towards the air duct assembly (2); and / or the wind blocking structure (A) protrudes to an extent that overlaps with the air outlet end (300) in a main air flow direction (Z) pointing from the air inlet end of the evaporator (3) to the air outlet end (300).

4. The refrigerator according to claim 3, wherein a minimum distance between the wind blocking structure (A) and each part of the evaporator (3) is greater than or equal to 1 mm; and / or a minimum distance (d1) between the wind blocking structure (A) and the air outlet end (300) is proportional to an overlapping distance (d2) between the wind blocking structure (A) and the air outlet end (300) in a protruding direction (X).

5. The refrigerator according to claim 3, wherein in a cross section taken perpendicular to an extending direction (Y) of the wind blocking structure (A), the wind blocking structure (A) has a substantially conical tapering shape tapering as it protrudes away from the rear wall (10) of the chamber, both edges of the tapering shape forming an obtuse angle with the rear wall (10) of the chamber; and / or the wind blocking structure (A) is an integrally protruding section of the rear wall (10) of the chamber, or the wind blocking structure (A) is a protruding strip component attached to the rear wall (10) of the chamber.

6. The refrigerator according to any one of claims 1, 2, 4, 5, wherein a side of the evaporator (3) facing the rear wall (10) of the chamber has at least a first gap (t1) with the rear wall (10) of the chamber; and / or The evaporator (3) is a finned evaporator (3) comprising at least an evaporation tube (31) and a plurality of fin groups (32) arranged on the evaporation tube (31), the evaporation tube (31) and the plurality of fin groups (32) being arranged to constitute a plurality of evaporator sections (S1, S2, S3) arranged along a main airflow direction (Z) pointing from an air inlet end of the evaporator (3) to an air outlet end (300), and along the main airflow direction (Z), a pitch between fins successively decreases according to the evaporator sections (S1, S2, S3).

7. The refrigerator according to claim 6, wherein the first gap (t1) has a value of 4 mm to 6 mm; and / or along the main airflow direction (Z), a pitch between the one side of the evaporator (3) and the rear wall (10) of the compartment gradually decreases to the first gap (t1) in a stepped manner and / or in an inclined manner; and / or the evaporator (3) and the air duct assembly (2) have at least a third gap (t3) which is smaller than the first gap (t1).

8. The refrigerator according to claim 7, wherein the rear wall (10) of the compartment is formed to have at least one step portion (11) such that the one side of the evaporator (3) and the rear wall (10) of the compartment further have at least a second gap (t2) which is larger than the first gap (t1); or at least in a rear wall section opposite to the evaporator (3), the rear wall (10) of the compartment comprises an inclined wall which is closer to the evaporator (3) along the main airflow direction (Z).

9. The refrigerator according to claim 8, wherein the step height of the step portion (11) is 1 mm to 3 mm; and / or the third gap (t3) is greater than or equal to 1 mm; and / or a maximum gap distance between the rear wall (10) of the compartment and the one side of the evaporator (3) is less than or equal to 10 mm.

10. The refrigerator according to claim 8 or 9, wherein a position of each of the step portions (11) of the rear wall (10) of the compartment corresponds to an abutment between corresponding two evaporator sections among the plurality of evaporator sections (S1, S2, S3); and / or at least in an evaporator section in which a pitch between fins among the plurality of evaporator sections (S1, S2, S3) is smallest, a pitch between the evaporator (3) and the rear wall (10) of the compartment is the first gap (t1).

Images