Air duct structure of air-cooled refrigerator and air-cooled refrigerator

Abstract

The utility model relates to the technical field of refrigeration equipment, in particular to an air channel structure of an air-cooled refrigerator and the air-cooled refrigerator. The air duct structure comprises an air duct body and a connecting piece, the air duct body is of a cylindrical structure, and at least one end of the air duct body is an inserting end used for being matched with other air path components; the connecting piece is of an annular structure, a combining groove is formed in one axial side of the connecting piece, and the connecting piece is arranged at the inserting end in a sleeving mode through the combining groove. According to the air duct structure of the air-cooled refrigerator and the air-cooled refrigerator, by arranging the connecting piece, the connecting piece wraps the air duct body so as to achieve the protection effect on the air duct structure, when the air duct body is damaged, the wrapping performance of the connecting piece can guarantee sealing of the air duct structure, and therefore it is avoided that cold air leaks to a refrigerating chamber to freeze the refrigerating chamber, and the service life of the refrigerating chamber is prolonged. And the performance reduction of the air-cooled refrigerator is further avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to an air duct structure of an air-cooled refrigerator and an air-cooled refrigerator. Background Art

[0002] Common air-cooled refrigerators mainly blow air through a fan in the air duct and absorb the cold air generated by the evaporator. The cold air in the refrigeration compartment of the refrigeration system is circulated and blown into the refrigerator compartment through the circulating air supply mechanism to achieve the refrigeration effect. Among them, the circulating air supply mechanism needs to be composed of a refrigerating air duct foam and the inner liner of the compartment, and the connection and sealing are realized through EPS foam and sponge in the middle.

[0003] However, due to the low production dimension accuracy of EPS foam, it is not easy to assemble in place and there are gaps, and the particle foaming production is relatively easy to be damaged, resulting in insufficient airtightness of the air duct structure, abnormal refrigeration of the refrigerator, icing in the refrigerating compartment, and damage to the performance of the refrigerator. Summary of the Utility Model

[0004] Based on this, it is necessary to provide an air duct structure of an air-cooled refrigerator and an air-cooled refrigerator that can still ensure the airtightness of its air duct after the EPS foam is damaged and prevent icing in the refrigerating compartment.

[0005] To solve the above technical problems, the present application provides the following technical solutions:

[0006] An air duct structure of an air-cooled refrigerator, the air duct structure includes:

[0007] An air duct body, which is a cylindrical structure, and at least one end of the air duct body is a plug-in end for cooperating with other air duct components;

[0008] A connecting piece, which is an annular structure, and a combining groove is provided on one side of the axial direction of the connecting piece, and the connecting piece is sleeved on the plug-in end through the combining groove.

[0009] It can be understood that the present application sets an annular connecting piece and sleeved on the plug-in end of the air duct body, so that the connecting piece wraps the air duct body to achieve the protection effect on the air duct structure. When the air duct body is damaged during production, transportation or assembly, the wrapping property of the connecting piece can prevent the cold air from leaking to the refrigerating compartment at this place, thus avoiding icing in the refrigerating compartment and ensuring the structural performance of the air-cooled refrigerator.

[0010] In one of the embodiments, the connecting piece includes:

[0011] An inner peripheral wall, which extends into the interior of the air duct body;

[0012] An end wall, which abuts against the end face of the plug-in end;

[0013] The outer peripheral wall is disposed around the outer periphery of the insertion end;

[0014] Wherein, the inner peripheral wall, the end wall and the outer peripheral wall enclose the engaging groove.

[0015] It can be understood that the engaging groove formed by enclosing the inner peripheral wall, the end wall and the outer peripheral wall is used to connect the air duct body, wrap it inside the connector, and increase the sealing performance of the air duct structure.

[0016] In one embodiment, the axial length of the inner peripheral wall is greater than the axial length of the outer peripheral wall.

[0017] It can be understood that the sufficient axial length of the inner peripheral wall can effectively prevent the relative shaking between the connector and the air duct body, maintain stable insertion fit. Since the inner peripheral wall is inside the air duct body, it can avoid occupying external space, reduce interference with adjacent components on the outside, and further increase the sealing performance of the air duct structure.

[0018] In one embodiment, the outer periphery of the insertion end has a positioning step, and the outer peripheral wall abuts against the positioning step.

[0019] It can be understood that by setting the positioning step, the insertion depth of the air duct body and the connector is limited, which is more convenient for assembly and while ensuring the structural sealing performance, does not overly occupy the structural space to improve the space utilization rate.

[0020] In one embodiment, the outer peripheral wall has an outward turning edge on the side away from the end wall, and abuts against the positioning step through the outward turning edge.

[0021] It can be understood that the setting of the outward turning edge increases the contact area between the air duct body and the connector, prevents the air duct body from being damaged due to too small contact area when the pressure of the air duct structure on the air duct body is too large, can protect the air duct body and make it not easy to break, thereby increasing the stability and sealing performance of the air duct structure.

[0022] In one embodiment, the outer wall of the air duct body adjacent to the insertion end is offset inward, and the positioning step is formed at the offset part.

[0023] It can be understood that the offset of the insertion end enables the air duct body to be better sealed and connected with the connector, and avoids the inner components of the air duct structure from extruding the air duct body outward to cause deformation and rupture, further increasing the stability of the air duct structure.

[0024] In one embodiment, the air duct body is a square tube structure, and the shape of the connector is adapted to the air duct body.

[0025] In one embodiment, the air duct body is made of foam, and the connecting piece is made of plastic and integrally formed.

[0026] It can be understood that the plastic material has a relatively high density and a certain deformation ability, which can increase the resistance while ensuring the sealing of the air duct structure, making the connecting piece itself not easily break; at the same time, the integrally formed structure has fewer structural connections, strong structural stability, and lower production costs.

[0027] The present application also provides the following technical solutions:

[0028] An air-cooled refrigerator includes a first air duct and a second air duct that are plugged and communicated. The second air duct is provided with a plug-in interface, and the first air duct has the air duct structure described in any of the above embodiments and is matched with the plug-in interface through the plug-in end.

[0029] In one embodiment, at least a part of the connecting piece is clamped and fixed between the first air duct and the second air duct.

[0030] Compared with the prior art, the air duct structure of the air-cooled refrigerator and the air-cooled refrigerator of the present application are provided with a connecting piece to wrap the air duct body to achieve the protection of the air duct structure. When the air duct body is damaged, the wrapping property of the connecting piece can ensure the sealing of the air duct structure, thereby preventing cold air from leaking to the refrigerating chamber and freezing it, and further avoiding the performance decline of the air-cooled refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 It is a partial cross-sectional view of the air duct structure provided by the present application.

[0033] Figure 2 It is a structural diagram of the connecting piece provided by the present application.

[0034] Figure 3 It is a cross-sectional structural diagram of the air-cooled refrigerator provided by the present application.

[0035] Figure 4 It is a partial cross-sectional view of the air-cooled refrigerator provided by the present application.

[0036] The reference numerals of each element are as follows:

[0037] 100, air duct structure; 10, air duct body; 11, insertion end; 12, positioning step; 20, connecting piece; 21, engaging groove; 22, inner peripheral wall; 23, end wall; 24, outer peripheral wall; 241, outward flange; 200, air-cooled refrigerator; 201, first air duct; 202, second air duct. Detailed implementation manners

[0038] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0039] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of the present application are only for the purpose of illustration and do not represent the only implementation manner.

[0040] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0041] In the present application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first feature is in direct contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature has a lower horizontal height than the second feature.

[0042] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0043] See also Figures 1 to 4 The present application provides an air duct structure 100 of an air-cooled refrigerator, which is applied to the air-cooled refrigerator 200. The air duct structure 100 is mainly achieved by arranging a connector 20 at the upper air duct and the connecting air duct of the air-cooled refrigerator 200, that is, the connector 20 of the ring structure is sleeved on the plug-in end 11 of the air duct body 10, and the connector 20 as a whole wraps the end of the air duct body 10 to improve the sealing of the air-cooled refrigerator, prevent the air duct body 10 from being damaged or a gap from being generated during assembly, and leaking cold air into the refrigerating chamber to cause it to freeze. The structural performance of the air-cooled refrigerator 200 can be improved, and its good operation can be guaranteed.

[0044] like Figure 1 and Figure 2 As shown, the air duct structure 100 includes an air duct body 10 and a connector 20, wherein the air duct body 10 is a cylindrical structure, and at least one end of the air duct body 10 is a plug-in end 11 for matching with other air duct components; the connector 20 is an annular structure, and a coupling groove 21 is provided on one axial side of the connector 20, and the connector 20 is sleeved to the plug-in end 11 through the coupling groove 21. It should be explained that the refrigerator air duct is mainly sealed by connecting the upper air duct EPS foam to the sponge sealing strip, and the resilience of the sponge is used to achieve sealing, but the EPS foam is relatively fragile and the dimensional accuracy is not high, resulting in large dimensional deviation. During the manufacturing and installation process, it is easy to be damaged or assembly gaps appear, resulting in poor air duct sealing, so that cold air enters the refrigerator compartment and freezes, affecting the performance of the refrigerator. In the present application, a connecting piece 20 with an annular structure is sleeved on the plug-in end of the air duct body 10, so that the connecting piece 20 wraps the air duct body 10, adds a layer of protective structure to the air duct, strengthens the local strength of the air duct and correspondingly ensures the sealing, thereby preventing cold air from entering the cold storage chamber from the air duct, and preventing the cold storage chamber from freezing and affecting the performance of the refrigerator.

[0045] Here, the air duct body 10 is made of foam material, including EPS foam for the upper air duct, and the connector 20 can wrap the air duct connection to achieve sealing; other air duct components are located at the connecting air duct, which can be other foam air ducts or other components in the refrigerator for connecting cold air.

[0046] like Figures 1 to 4As shown, the outer periphery of the insertion end 11 is provided with a positioning step 12, which can limit the insertion depth of the air duct body 10 and the connecting member 20. While ensuring the structural sealing performance, it does not occupy excessive structural space, so as to improve the space utilization rate.

[0047] Specifically, the outer wall of the air duct body 10 adjacent to the insertion end 11 is offset inward, and a positioning step 12 is formed at the offset part. The offset of the insertion end enables the air duct body to be better sealed and connected with the connecting member, and avoids the inner components of the air duct structure from extruding the air duct body outward to cause deformation and rupture, further increasing the stability of the air duct structure.

[0048] Exemplarily, the air duct body 10 is of a square tube structure, and the shape of the connecting member 20 is adapted to that of the air duct body 10.

[0049] As Figure 2 shown, the connecting member 20 is made of plastic and integrally formed. Its material can be a ductile plastic such as polyethylene, polypropylene, or polypropylene styrene, with a relatively high density and having a certain deformation ability and heat preservation effect. It can increase the resistance while ensuring the sealing performance of the air duct structure 100, making the connecting member itself not easily break; at the same time, the integrally formed structure has fewer structural connections, strong structural stability, and relatively low production costs.

[0050] Please continue to refer to Figure 1 and Figure 2 , the connecting member 20 includes an inner peripheral wall 22, an end wall 23, and an outer peripheral wall 24. Among them, the inner peripheral wall 22 extends into the interior of the air duct body 10; the end wall 23 abuts against the end face of the insertion end 11; the outer peripheral wall 24 surrounds the outer periphery of the insertion end 11; and the inner peripheral wall 22, the end wall 23, and the outer peripheral wall 24 enclose a binding groove 21 to wrap the air duct body 10 through the binding groove 21, increasing the sealing performance. Here, the inner peripheral wall 22, the end wall 23, and the outer peripheral wall 24 are all solid structures, including their respective wall surfaces and internal solids.

[0051] Further preferably, the axial length of the inner peripheral wall 22 is greater than that of the outer peripheral wall 24, thereby effectively preventing the air duct body 10 from shaking and increasing the stability of the air duct structure 100. Here, the axial length of the inner peripheral wall 22 is set to 55 mm - 65 mm, and the axial length of the outer peripheral wall 24 is set to 20 mm - 30 mm to ensure that their lengths can fully wrap the air duct body 10.

[0052] Optionally, the axial length of the inner peripheral wall 22 can be values such as 55 mm, 57 mm, 60 mm, 63 mm, 65 mm, etc.; the axial length of the outer peripheral wall 24 can be values such as 20 mm, 24 mm, 25 mm, 27 mm, 30 mm, etc. Of course, within this range, the values of the axial length of the inner peripheral wall 22 and the axial length of the outer peripheral wall 24 can also be selected and set according to actual requirements.

[0053] Furthermore, the outer peripheral wall 24 has a flanging 241 on the side away from the end wall 23, and abuts against the positioning step 12 through the flanging 241. The setting of the flanging 241 increases the contact area between the air duct body 10 and the connecting member 20, preventing the air duct body 10 from rupturing when the pressure of other components of the air duct structure 100 on the air duct body 10 is too high, so as to protect the air duct body 10, thereby increasing the stability and sealing performance of the air duct structure 100.

[0054] Here, the wall thickness of the connecting member 20 is set to 1.8 mm - 2.2 mm, so that while ensuring its own structural stability and being able to completely wrap the air duct body 10, it does not occupy the thickness of the air duct insulation layer. Optionally, the wall thickness of the connecting member 20 can be 1.8 mm, 1.9 mm, 2.0 mm, 2.1 mm, 2.2 mm. Of course, within this range, other values can be selected according to actual requirements for the wall thickness of the connecting member 20.

[0055] As Figure 3 and Figure 4 shown, the present application also provides an air-cooled refrigerator 200, including a first air duct 201 and a second air duct 202 that are plugged and connected. The second air duct 202 is provided with a plug interface, and the first air duct 201 has the air duct structure 100 in any of the above embodiments, and is matched with the plug interface through the plug end 11.

[0056] Exemplarily, at least a part of the connecting member 20 is clamped and fixed between the first air duct 201 and the second air duct 202. For example, the outer peripheral wall 24 is clamped between the first air duct 201 and the second air duct 202 in the radial direction, and the flanging 241 is clamped between the first air duct 201 and the second air duct 202 in the axial direction, further ensuring the stability and sealing performance of the plug-in fit.

[0057] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0058] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. An air duct structure for an air-cooled refrigerator, characterized in that: The air duct structure comprises: The air duct body (10) is a cylindrical structure, and at least one end of the air duct body (10) is a plug-in end (11) for matching with other air duct components; The connecting piece (20) is an annular structure. A coupling groove (21) is provided on one axial side of the connecting piece (20), and the connecting piece (20) is sleeved onto the plug-in end (11) through the coupling groove (21).

2. The air duct structure of the air-cooled refrigerator according to claim 1, characterized in that: The connecting member (20) comprises: An inner peripheral wall (22) extends into the interior of the air duct body (10); An end wall (23) abutting against an end surface of the plug-in end (11); An outer peripheral wall (24) is disposed around the outer periphery of the plug end (11); The inner peripheral wall (22), the end wall (23) and the outer peripheral wall (24) enclose the coupling groove (21).

3. The air duct structure of the air-cooled refrigerator according to claim 2, characterized in that: The axial length of the inner peripheral wall (22) is greater than the axial length of the outer peripheral wall (24).

4. The air duct structure of the air-cooled refrigerator according to claim 2, characterized in that: The outer periphery of the plug-in end (11) is provided with a positioning step (12), and the outer peripheral wall (24) abuts against the positioning step (12).

5. The air duct structure of the air-cooled refrigerator according to claim 4, characterized in that: The outer peripheral wall (24) has an outer flange (241) on the side away from the end wall (23), and abuts against the positioning step (12) through the outer flange (241).

6. The air duct structure of the air-cooled refrigerator according to claim 4, characterized in that: The outer wall of the air duct body (10) is offset inward at a position adjacent to the plug-in end (11), and the positioning step (12) is formed at the offset position.

7. The air duct structure of the air-cooled refrigerator according to claim 1, characterized in that: The air duct body (10) is a square tube structure, and the shape of the connecting piece (20) is compatible with the air duct body (10).

8. The air duct structure of the air-cooled refrigerator according to claim 1, characterized in that: The air duct body (10) is made of foam material, and the connecting piece (20) is made of plastic material and is integrally formed.

9. An air-cooled refrigerator, comprising a first air duct (201) and a second air duct (202) connected by plugging, characterized in that: The second air duct (202) is provided with a plug interface, and the first air duct (201) has the air duct structure (100) according to any one of claims 1 to 8 and cooperates with the plug interface through the plug end (11).

10. The air-cooled refrigerator according to claim 9, characterized in that: At least a portion of the connecting member (20) is clamped and fixed between the first air duct (201) and the second air duct (202).

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