CN220959107U - Air duct structure for refrigeration compartment and refrigeration equipment - Google Patents

Abstract

The application relates to the technical field of household appliances, and discloses an air duct structure for a refrigeration compartment, which comprises the following components: an air outlet, a separation rib and an air guide piece. The separation ribs are arranged in the air outlet to divide the air outlet into a plurality of layers; the air guide sheets are arranged in the air outlet and are provided with a plurality of air guide sheets, wherein at least part of the air guide sheets are different in inclination angle. The uniformity of indoor air-out of between can improving the refrigeration, keep the temperature equilibrium of each position in the refrigeration room, only need adopt single air outlet simultaneously, reduce the space and occupy, reduce the demand to installation space, through improving the uniformity of air-out, make each position in the refrigeration room can both form the air current, avoid the circulation of air current not smooth to cause the side wall of refrigeration room to produce the condensation risk. The application also discloses refrigeration equipment.

Description

Air duct structure for refrigeration compartment and refrigeration equipment

Technical Field

The application relates to the technical field of household appliances, in particular to an air duct structure for a refrigeration compartment and refrigeration equipment.

Background

At present, the traditional air outlet of the air duct is an air outlet in a single fixed direction. When the air is supplied into the chamber, the temperature distribution of the chamber is uneven. The temperature of the position blown by wind is fast, and the temperature of the position not blown by wind is slow. The blowoff location also presents a risk of condensation due to the lack of air flow.

In order to solve the problem in the related art, the air is supplied through the plurality of air outlets, so that the uniformity of flowing of cold air in the room is improved, but the air is supplied through the plurality of air outlets simultaneously, so that the air pressure of each air outlet is lower, and the refrigeration efficiency is also influenced. And in some cases, when more air inlets cannot be arranged due to space limitation, uneven cooling can be caused, and the requirement on the installation space is high.

Therefore, how to improve the uniformity of indoor air supply, the uniformity of temperature distribution and the condensation risk reduction under the condition that the indoor installation space of a refrigeration room is limited becomes a technical problem to be solved urgently by those skilled in the art.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of utility model

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides an air duct structure for a refrigeration compartment and refrigeration equipment, so as to solve the problem that a plurality of air inlets supply air simultaneously, so that the air pressure of each air inlet is lower and the refrigeration efficiency is also influenced. And in some cases, when more air inlets cannot be arranged due to space limitation, the problem that the temperature is not uniform and the demand on the installation space is high is caused.

In some embodiments, a duct structure for a refrigerated compartment includes: an air outlet, a separation rib and an air guide piece. The separation ribs are arranged in the air outlet to divide the air outlet into a plurality of layers; the air guide sheets are arranged in the air outlet and are provided with a plurality of air guide sheets, wherein at least part of the air guide sheets are different in inclination angle.

Optionally, the air outlet is layered up and down by the separating ribs.

Optionally, the air outlet is divided into a first air outlet at the upper side and a second air outlet at the lower side by the separating ribs, and air guide sheets are arranged in the first air outlet and the second air outlet.

Optionally, the wind guiding piece includes: the first guide piece, the second guide piece and the third guide piece. The first guide sheets are in a plurality of and are mutually parallel and arranged in the first air opening, and the whole first guide sheets incline to one side edge of the air outlet; the second guide piece is arranged in the second air opening and is perpendicular to the plane where the air outlet is positioned; the third guide piece is arranged in the second air opening and is obliquely arranged to one side edge of the air outlet.

Optionally, one of the first guide plates located at the end of the inclined direction is connected with a first transverse guide plate, wherein the first transverse guide plate is parallel to the plane of the air outlet and is connected with the outer side end of the first guide plate.

Optionally, the position where the third guide piece is arranged corresponds to the position where the first guide piece of the first transverse guide piece is arranged, and the outer side end of the third guide piece is provided with a second transverse guide piece, and the second transverse guide piece is arranged in parallel with the first transverse guide piece.

Optionally, the air duct structure for the refrigeration compartment further comprises: a main refrigerating and air supplying pipeline and a compartment air supplying pipeline. One end of the compartment air supply pipeline is communicated with the main refrigerating air supply pipeline, the other end of the compartment air supply pipeline is communicated with the air outlet, and an independent air door structure is arranged in the compartment air supply pipeline.

Optionally, the air duct structure for the refrigeration compartment further comprises: and (5) an air return port. The return air inlet and the refrigerating air supply main pipeline form a loop through the return air pipeline, and the return air inlet and the air outlet are arranged on the same side of the refrigerating compartment.

Optionally, the inclination angle of the air guide plate is biased to the other side opposite to the side where the air outlet and the air return opening are arranged in the refrigerating chamber.

In some embodiments, a refrigeration appliance includes: the air duct structure for a refrigeration compartment as described in any one of the above embodiments.

The air duct structure and the refrigeration equipment for the refrigeration compartment provided by the embodiment of the disclosure can realize the following technical effects:

Set up single air outlet on the wind channel structure for refrigerating room to adopt the rib to divide into the multilayer with the air outlet, and set up the wind-guiding piece that inclination is different in the air outlet, and then make the air current that the air outlet blows out can the layering and blow out towards different directions, can improve the homogeneity of the indoor air-out of refrigerating room, keep the temperature of each position in the refrigerating room balanced, only need adopt single air outlet simultaneously, reduce the space occupation, reduce the demand to installation space, through improving the homogeneity of air-out, make each position in the refrigerating room can both form the air current, avoid the circulation of air current not smooth to cause the side wall of refrigerating room to produce the condensation risk.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

FIG. 1 is a schematic view of a part of an air duct structure for a refrigeration compartment according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of a first tuyere provided in an embodiment of the present disclosure;

FIG. 3 is a cross-sectional view of a second tuyere provided in an embodiment of the present disclosure;

FIG. 4 is a rear view of a duct structure for a refrigerated compartment provided by an embodiment of the present disclosure;

FIG. 5 is a schematic view of a structure of an air duct for a refrigeration compartment according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of another angular configuration of a duct structure for a refrigerated compartment according to an embodiment of the present disclosure;

Fig. 7 is a front view of an air duct structure for a refrigerated compartment provided by an embodiment of the present disclosure.

Reference numerals:

100. An air outlet; 101. a first tuyere; 102. a second tuyere; 200. a spacer rib; 300. an air guiding sheet; 301. a first guide piece; 302. a second guide piece; 303. a third guide piece; 304. a first transverse guide vane; 305. a second transverse guide vane; 400. a main refrigerating and air supplying pipeline; 500. a compartment air supply pipeline; 501. a damper structure; 600. an air return port; 601. and a filter assembly.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, unless otherwise indicated.

In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

As shown in connection with fig. 1-3, an embodiment of the present disclosure provides an air duct structure for a refrigeration compartment, including: air outlet 100, separating rib 200, wind guiding piece 300. The partition ribs 200 are arranged in the air outlet 100 to divide the air outlet 100 into a plurality of layers; the air guiding plate 300 is disposed in the air outlet 100, and a plurality of air guiding plates 300 are disposed therein, wherein at least some of the air guiding plates 300 have different inclination angles.

By adopting the air duct structure for the refrigerating compartment provided by the embodiment of the disclosure, the single air outlet 100 is arranged on the air duct structure for the refrigerating compartment, the air outlet 100 is divided into multiple layers by adopting the partition ribs 200, and the air guide plates 300 with different inclined angles are arranged in the air outlet 100, so that the air flow blown out by the air outlet 100 can be layered and blown out towards different directions, the uniformity of the air outlet in the refrigerating compartment can be improved, the temperature balance of each position in the refrigerating compartment is kept, meanwhile, only a single air outlet 100 is needed, the space occupation is reduced, the demand on the installation space is reduced, the air flow can be formed at each position in the refrigerating compartment by improving the uniformity of the air outlet, and the condensation risk on the side wall of the refrigerating compartment caused by unsmooth circulation of the air flow is avoided.

Optionally, the ribs 200 layer the air outlet 100 up and down. Like this, utilize separating muscle 200 to carry out upper and lower layering with air outlet 100, make air outlet 100 divide into upper and lower two parts, and then make the air-out air current layering of air outlet 100 to the air-out can be carried out towards different directions to the air-flow of layering under the effect of wind-guiding piece 300, and then make the distribution of indoor air current of refrigeration room more even, improve the homogeneity of temperature, keep higher refrigeration efficiency, and avoid the circulation of air current not smooth to cause the side wall of refrigeration room to produce the condensation risk.

Optionally, the depth of the rib 200 on the plane perpendicular to the air outlet 100 is greater than or equal to the depth of the air guiding sheet 300 on the plane perpendicular to the air outlet 100. Like this, on the one hand can utilize the rib 200 to fully fix air guide 300, keep air guide 300's stability, on the other hand can laminate the air-out better, reduce the influence each other of air current after layering from top to bottom, improve the air supply effect of air outlet 100, keep air outlet 100 can be towards a plurality of angles air-out, improve the homogeneity of air outlet 100 air-out, keep the indoor air current evenly distributed of refrigeration room, avoid the circulation of air current not smooth to cause the side wall of refrigeration room to produce the condensation risk.

Optionally, the front side of the barrier rib 200 is flush with the front side of the air outlet 100. In this way, the spacer ribs 200 can be prevented from occupying the installation position of the air outlet 100, the protrusion of the spacer ribs 200 is prevented from affecting the depth of the refrigerating compartment, and the spacer ribs 200 can be prevented from being recessed relative to the front side surface of the air outlet 100, so that the air supply effect is poor and the flow dividing effect on the air flow is poor.

Optionally, the ribs 200 divide the air outlet 100 into a first air outlet 101 at the upper side and a second air outlet 102 at the lower side, and the air guiding sheets 300 are disposed in the first air outlet 101 and the second air outlet 102. Like this, through all setting up wind-guiding piece 300 in upper and lower layered first air outlet 100 and second air outlet 100, can make the air-out of air outlet 100 layering from top to bottom, and all have the air-out towards different directions, improve the homogeneity of air-out, keep higher refrigeration efficiency.

Optionally, the wind guiding sheet 300 includes: a first guide piece 301, a second guide piece 302 and a third guide piece 303. The first guide piece 301 has a plurality of first guide pieces, and is arranged in parallel in the first air port 101, and the whole of the first guide piece is inclined to one side edge of the air outlet 100; the second guide piece 302 is disposed in the second air opening 102 and is perpendicular to the plane of the air outlet 100; the third guide piece 303 is disposed in the second air port 102, and is disposed obliquely to one side of the air outlet 100. Like this, because the wind pressure of air outlet 100 air outlet is great under the general circumstances, the air outlet can directly blow away to the direction of keeping away from air outlet 100, consequently can lead to the adjacent air of refrigeration room lateral wall that is provided with air outlet 100 to not circulate, and then lead to the indoor temperature of refrigeration room inhomogeneous, partial regional temperature drops too fast, partial regional temperature drops too slowly, holistic refrigeration efficiency is lower, through setting up first guide vane 301, and make its whole slope towards the side of air outlet 100, and then dredge the air outlet 100 towards the side of air outlet 100, simultaneously utilize second guide vane 302, can improve the air-feeding ability, make the air outlet keep away from the direction air outlet of air outlet 100, and still set up third guide vane 303 in second air outlet 102, make third guide vane 303 can also blow to the side of air outlet 100, through the combination setting of multiple guide vane 300, can make the air outlet 100 carry out the air supply towards a plurality of positions in the refrigeration room, improve the homogeneity of air-feeding, make its inside temperature more even, keep higher efficiency, avoid the side wall that the refrigeration room that the air outlet produced the risk of condensation produced on the side wall of refrigeration room.

Alternatively, the inclination angle of the first guide piece 301 is the same as the inclination angle of the third guide piece 303. In this way, the upper layer and the lower layer of the air outlet 100 are provided with the air outlet with the same angle, so that more air outlet can be obliquely blown out in the refrigerating compartment, and can flow along the side wall of the refrigerating compartment, the air flow speed at the side wall of the refrigerating compartment is improved, and condensation on the refrigerating compartment is avoided.

Alternatively, the thickness of the second guide piece 302 gradually increases along the wind guiding direction thereof. In this way, the airflow channels formed between the second guide pieces 302 gradually reduce the flow area along the air guiding direction, so that the air outlet can form weak jet flow, the air supply flow speed is improved, and the air flow distribution in the refrigerating compartment is better uniform.

It will be appreciated that the second guide 302 may also be inclined at an angle opposite to the direction of inclination of the first guide 301. Thus, when the air outlet 100 is disposed at the middle position of the refrigeration compartment, the second guide vane 302 and the first guide vane 301 can respectively discharge air in the left and right directions, so that the air flow is more uniformly distributed in the refrigeration compartment.

Optionally, an included angle between the first guide vane 301 and the plane in which the air outlet 100 is located is greater than or equal to 30 degrees and less than or equal to 60 degrees. Preferably, the included angle between the first guide vane 301 and the plane in which the air outlet 100 is located is 45 degrees. Like this, first guide vane 301 can incline 45 degrees wind-guiding, makes the wind-guiding slope 45 degrees of first guide vane 301 blow out, makes the air-out can blow out towards another angle of refrigeration room with the form of diagonal, makes the air current distribute more evenly in the refrigeration room, improves the distribution homogeneity of air current and room in the refrigeration room, avoids producing the condensation in the refrigeration room.

It will be appreciated that the direction of inclination of the first guide piece 301 is related to the installation position of the air outlet 100, and that the first guide piece 301 is inclined to the right in the case where the air outlet 100 is installed at the left side of the cooling compartment, and that the first guide piece 301 is inclined to the left in the case where the air outlet 100 is installed at the right side of the cooling compartment. When the air outlet 100 is installed in the middle of the cooling compartment, the first guide piece 301 is inclined to the left and the second guide piece 302 is inclined to the right. Like this, make the air-out direction of air outlet 100 and its position that sets up correlated with, can make the air-out of air outlet 100 distribute in the refrigeration room better, improve the homogeneity of indoor air current of refrigeration room, reduce the risk of producing the condensation in the refrigeration room.

Optionally, one first guide piece 301 located at the end of the first guide piece 301 in the inclined direction is connected to a first transverse guide piece 304, where the first transverse guide piece 304 is parallel to the plane of the air outlet 100 and is connected to the outer end of the first guide piece 301. Like this, set up first horizontal guide vane 304 on the first guide vane 301 of being closest to the air outlet 100 side, and then can utilize first horizontal guide vane 304 to change the air-out in the air outlet 100 into the plane air-out that lies along air outlet 100, and then make the air-out can adhere to the back lateral wall flow of refrigeration room, improve the air velocity near the back lateral wall of refrigeration room, and then avoid the circulation of air current not smooth to cause the side wall of refrigeration room to produce the condensation risk.

Optionally, the third guide 303 is disposed at a position corresponding to the position of the first guide 301 where the first transverse guide 304 is disposed, and the outer end of the third guide 303 is disposed with a second transverse guide 305, where the second transverse guide 305 is disposed in parallel with the first transverse guide 304. In this way, the second transverse guide piece 305 is disposed on the third guide piece 303, and its action is the same as that of the first transverse guide piece 304 disposed on part of the first guide piece 301, and all the second transverse guide pieces are used to enable the outlet air to adhere to the side wall of the refrigeration compartment to flow, so as to avoid the risk of condensation caused by unsmooth airflow around the side wall of the refrigeration compartment.

Alternatively, the plane of the front side of the air outlet 100 protrudes forward with respect to the rear sidewall of the refrigerating compartment, or the front ends of the first guide piece 301 and the third guide piece 303 protrude from the air outlet 100 by a set distance. In this way, the front ends of the first guide piece 301 and the third guide piece 303 extend out of the air outlet 100 by a set distance, so that the first transverse guide piece 304 and the second transverse guide piece 305 are staggered by a certain distance from the side wall of the refrigeration compartment, and the guide air of the first transverse guide piece 304 and the second transverse guide piece 305 can flow along the side wall of the refrigeration compartment, so that the side wall of the refrigeration compartment is prevented from being condensed.

Optionally, the first and second transverse guides 304, 305 are each parallel to the rear sidewall of the refrigerated compartment. In this way, under the wind guiding action of the first transverse guide piece 304 and the second transverse guide piece 305, the outlet wind can flow along the rear side wall of the refrigeration compartment, so that the airflow flow at the side wall of the refrigeration compartment is improved, and the generation of condensation is avoided.

As shown in fig. 4-7, the air duct structure for the refrigeration compartment optionally further comprises: a main refrigeration supply duct 400 and a compartment supply duct 500. One end of the compartment air supply pipeline 500 is communicated with the main refrigerating air supply pipeline 400, the other end is communicated with the air outlet 100, and a separate air door structure 501 is arranged in the compartment air supply pipeline 500. Thus, the refrigerating compartment is provided with the independent compartment air supply pipeline 500 which is communicated with the main refrigerating air supply pipeline 400, and the air supply quantity of the compartment air supply pipeline 500 is controlled through the independent air door structure 501, so that the air supply in the refrigerating compartment can be independently controlled, and different requirements in the refrigerating compartment can be met.

It is understood that the individual damper arrangements 501 are independently controlled damper arrangements 501. Thus, through the independently controlled air door structure 501, the air supply to the indoor space of the refrigeration room can be independently controlled, the independent control of the indoor temperature of the refrigeration room is improved, and the use requirements of users are met.

As shown in fig. 5, the air duct structure for the refrigeration compartment may further include: and a return air port 600. The return air inlet 600 and the main refrigerating and air supplying pipeline 400 form a loop through a return air pipeline, and the return air inlet 600 and the air outlet 100 are arranged on the same side of the refrigerating compartment. Thus, the air return port 600 is arranged in the refrigerating compartment to form air circulation, the circulation of air flow in the refrigerating compartment is kept under the condition that the refrigerating compartment is closed, and the air return port 600 and the air outlet 100 are arranged on the same side of the refrigerating compartment, so that the occupation of the air duct structure on the rear side space of the refrigerating compartment can be reduced, and the space utilization rate is improved.

As shown in fig. 6, optionally, a filter assembly 601 is provided on the return air inlet 600. Like this, be equipped with filter assembly 601 on return air inlet 600 and can filter clean the return air, avoid the air current of dirty to get into in the return air pipe road, influence the heat transfer effect of the heat exchanger in the cold-stored air supply main line 400, cause the life-span of heat exchanger to descend.

Optionally, the filter assembly 601 includes a water vapor filter module. Like this, set up steam filtration module through return air inlet 600, can filter the indoor moisture of refrigeration room, avoid moisture to get into through return air inlet 600, cause the frosting phenomenon of heat transfer department, influence the normal use of heat exchanger.

It is understood that the water vapor filtering module may be made of a material with a moisture absorption function, such as a silica gel moisture absorption material.

As shown in fig. 7, alternatively, the inclination angle of the air guide 300 is biased toward the opposite side of the cooling compartment where the air outlet 100 and the return air inlet 600 are provided. Like this, utilize the reverse return air inlet 600 of air guide 300 to set up one side air-out, can avoid by the air outlet 100 the air current direct reflux to return air inlet 600 in, lead to the air-out air current unable in the indoor abundant diffusion of refrigeration room, utilize the inclination of air guide 300 to make the blowout direction of air current avoid return air inlet 600, improve the homogeneity that the air current flows in the indoor refrigeration room, and then improve the indoor refrigeration efficiency of refrigeration room.

Embodiments of the present disclosure provide a refrigeration apparatus including the air duct structure for a refrigeration compartment according to any of the embodiments above.

Adopt the refrigeration equipment that this embodiment of disclosure provided, through setting up the wind channel structure for refrigeration room of arbitrary embodiment in refrigeration equipment, divide into the multilayer with air outlet 100 through separating muscle 200, and set up the wind-guiding piece 300 that inclination is different in air outlet 100, and then make the air current that air outlet 100 blows out can the layering and blow out towards different directions, can improve the homogeneity of the indoor air-out of refrigeration room, keep the temperature equilibrium in each position in the refrigeration room, only need adopt single air outlet 100 simultaneously, reduce space occupation, reduce the demand to installation space, through improving the homogeneity of air-out, make each position in the refrigeration room can both form the air current, avoid the circulation of air current not smooth to cause the side wall of refrigeration room to produce the condensation risk, can improve whole refrigeration equipment's refrigeration effect, improve user experience.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. An air duct structure for a refrigeration compartment, comprising:

An air outlet (100);

the separation ribs (200) are arranged in the air outlet (100) to divide the air outlet (100) into multiple layers;

The air guide plates (300) are arranged in the air outlet (100) and are provided with a plurality of air guide plates, wherein at least part of the air guide plates (300) are different in inclination angle.

2. The air duct structure for a refrigerating compartment according to claim 1, wherein the barrier ribs (200) vertically layer the air outlet (100).

3. The air duct structure for a refrigerating compartment according to claim 2, wherein the ribs (200) divide the air outlet (100) into a first air outlet (101) at an upper side and a second air outlet (102) at a lower side, and air guiding pieces (300) are provided in both the first air outlet (101) and the second air outlet (102).

4. The air duct structure for a refrigerating compartment according to claim 1, wherein the air guiding fin (300) comprises:

The first guide sheets (301) are provided with a plurality of guide sheets, are mutually parallel and are arranged in the first air opening (101), and the whole guide sheets incline to one side edge of the air outlet (100);

The second guide piece (302) is arranged in the second air port (102) and is perpendicular to the plane where the air outlet (100) is arranged;

The third guide piece (303) is arranged in the second air port (102) and is obliquely arranged towards one side edge of the air outlet (100) as a whole.

5. The air duct structure for a refrigerating compartment according to claim 4, wherein one first guide piece (301) of the first guide pieces (301) located at the end of the inclined direction thereof is connected with a first transverse guide piece (304), wherein the first transverse guide piece (304) is parallel to the plane of the air outlet (100) and is connected to the outer side end of the first guide piece (301).

6. The air duct structure for a refrigerating compartment according to claim 5, wherein the third guide piece (303) is disposed at a position corresponding to a position of the first guide piece (301) where the first lateral guide piece (304) is disposed, and the outer side end of the third guide piece (303) is provided with the second lateral guide piece (305), and the second lateral guide piece (305) is disposed in parallel with the first lateral guide piece (304).

7. The air duct structure for a refrigerating compartment according to any one of claims 1 to 6, further comprising:

A main refrigerating and air-supplying pipeline (400);

and one end of the compartment air supply pipeline (500) is communicated with the refrigerating air supply main pipeline (400), the other end of the compartment air supply pipeline is communicated with the air outlet (100), and an independent air door structure (501) is arranged in the compartment air supply pipeline (500).

8. The air duct structure for a refrigeration compartment of claim 7, further comprising:

The return air inlet (600) forms a loop with the main refrigerating and air supplying pipeline (400) through a return air pipeline, and the return air inlet (600) and the air outlet (100) are arranged on the same side of the refrigerating chamber.

9. A duct structure for a refrigerated compartment according to any of claims 1 to 6, characterized in that the inclination angle of the air guiding flap (300) is biased towards the opposite side of the refrigerated compartment where the air outlet (100) and the return air inlet (600) are provided.

10. A refrigeration appliance including a duct structure for a refrigeration compartment as claimed in any one of claims 1 to 9.