Air duct assembly, box frame and refrigerator foaming method

Abstract

The present invention provides an air duct assembly, a box frame and a refrigerator foaming method, which relate to the technical field of refrigerators, and include: an air duct body; a blocking member arranged outside the air duct body, and used to extend into the foaming flow channel to block a part of the foaming material from flowing to the area with higher foaming density in the foaming flow channel. In the above technical scheme, since the blocking member is located outside the air duct body, when the air duct assembly is assembled in the box of the refrigerator as a whole, the blocking member located outside the air duct body will inevitably extend into the foaming flow channel formed between the refrigerated liner, the frozen liner and the inner wall of the refrigerator box. After the foaming material enters the foaming flow channel, the blocking member extending into the foaming flow channel will form a certain degree of blocking for the advancement of a part of the foaming material, and adjust the drop point of the foaming material entering the foaming flow channel within the expected range, thereby changing the overall distribution state of the foaming material, and ensuring that each part of the refrigerator box reaches the foaming quality standard.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerators, and in particular to an air duct component, a box frame and a foaming method for a refrigerator. Background Art

[0002] At present, a variety of foaming methods can be used in the manufacturing process of refrigerators. Among the different foaming methods, single-gun injection, multi-gun injection, bottom injection, back injection and other injection methods can be used. Since the bottom single-gun injection method has lower costs and the foaming quality basically meets the production needs, the foaming process of most refrigerator bodies tends to use this method to perform the foaming material injection operation.

[0003] However, due to the corresponding limitations on the number of gun heads and injection positions in the bottom single-gun injection method, the box body of the bottom single-gun injection often has an uneven density distribution problem after foaming is completed. The occurrence of this situation requires forced increase in the amount of material used to ensure that all parts of the refrigerator body meet the foaming quality standards. Summary of the invention

[0004] The object of the present invention is to provide an air duct assembly, a box frame and a foaming method for a refrigerator, so as to solve the technical problems in the prior art of high usage of foaming materials and material waste.

[0005] The present invention provides an air duct assembly, comprising:

[0006] Air duct body;

[0007] The blocking member is arranged outside the air duct body and is used to extend into the foaming flow channel to block a part of the foaming material from flowing to the area with higher foaming density in the foaming flow channel.

[0008] Furthermore, the blocking member is movably connected to the air duct body.

[0009] Furthermore, the blocking member may adjust a connection angle relative to the air duct body; and / or the blocking member may adjust a connection position relative to the air duct body.

[0010] Furthermore, a linear sliding groove is provided on the air duct body, a sliding portion is provided on the blocking member, and the blocking member is slidably assembled with the sliding groove via the sliding portion to adjust its connection position on the air duct body.

[0011] Furthermore, a sliding seat is provided on the air duct body, and the sliding groove is opened on the sliding seat; the blocking member is a plate-shaped member, and the sliding portion is located on the side of the plate-shaped member.

[0012] Furthermore, the sliding portion is in a straight line shape, and the length of the sliding groove is greater than the length of the sliding portion.

[0013] Furthermore, the cross-sections of the sliding groove and the sliding portion are both T-shaped.

[0014] Furthermore, the air duct body comprises:

[0015] a housing, wherein the blocking member is arranged on the housing;

[0016] The shielding plate is arranged on the outer shell and together with the outer wall of the outer shell forms a sealing groove for sealingly fitting the outer wall of the refrigerated liner and / or the frozen liner.

[0017] The present application also provides a box frame, comprising:

[0018] A box body having a material injection hole;

[0019] The refrigerated liner and the frozen liner are both arranged in the inner cavity of the box body, and form a foaming flow channel with the inner wall of the box body; the foaming flow channel at least includes a first flow channel located between the refrigerated liner and the inner wall of the box body, and a second flow channel located between the frozen liner and the inner wall of the box body, and the injection hole is connected to the second flow channel;

[0020] The air duct assembly is arranged in the inner cavity of the box body; the blocking member extends between the first flow channel and the second flow channel, and a flow gap is formed between the top end thereof and the inner wall of the box body.

[0021] Furthermore, the width of the flow gap is 10 mm to 20 mm.

[0022] Furthermore, the blocking member is arranged to be inclined toward the first flow channel.

[0023] Furthermore, the refrigeration liner and the freezing liner are arranged vertically, and the injection hole of the foaming channel is located at the bottom of the box body.

[0024] Furthermore, the air duct assembly is located between the refrigeration liner and the freezing liner, the blocking member extends into the foaming flow channel toward the back plate of the box body, and the injection hole is located at the back of the box body.

[0025] Furthermore, the effective blocking width of the blocking member is smaller than the back plate width of the box body.

[0026] The present application also provides a foaming method for a refrigerator, comprising the following steps:

[0027] A blocking member is arranged outside the air duct of the refrigerator so that the blocking member extends into the foaming flow channel of the refrigerator;

[0028] The foaming material is injected into the foaming flow channel, and during the flow of the foaming material, the blocking member is used to block a portion of the foaming material from flowing to the region with a higher foaming density in the foaming flow channel.

[0029] Furthermore, the connection position of the blocking member relative to the air duct is adjusted, thereby adjusting the blocking position for the flow of the foaming material.

[0030] In the above technical solution, since the blocking member is located outside the air duct body, when the air duct assembly is assembled as a whole in the refrigerator body, the blocking member located outside the air duct body will inevitably extend into the foaming flow channel formed between the refrigerated liner, the frozen liner and the inner wall of the refrigerator body. After the foaming material enters the foaming flow channel, the blocking member extending into the foaming flow channel will form a certain degree of obstruction to the advancement of a part of the foaming material, and adjust the drop point of the foaming material entering the foaming flow channel within the expected range, thereby changing the overall distribution state of the foaming material, ensuring that all parts in the refrigerator body meet the foaming quality standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a schematic diagram of the internal structure of a refrigerator in the prior art;

[0033] Figure 2 for Figure 1 A partial enlarged view of the internal structure of the refrigerator shown;

[0034] Figure 3 A plan view of an air duct assembly provided for one embodiment of the present invention;

[0035] Figure 4 A three-dimensional view of an air duct assembly provided by an embodiment of the present invention Figure 1 ;

[0036] Figure 5 for Figure 4 A partial enlarged view of the assembly structure of the air duct component shown;

[0037] Figure 6 A three-dimensional view of an air duct assembly provided by an embodiment of the present invention Figure 2 ;

[0038] Figure 7 A schematic diagram of the assembly structure of an air duct assembly provided in one embodiment of the present invention;

[0039] Figure 8 for Figure 7 A partial enlarged view of the assembly structure of the air duct component shown;

[0040] Fig. 9 A three-dimensional diagram of an air duct assembly assembly structure provided by an embodiment of the present invention;

[0041] Fig.10 A plan view of an air duct assembly assembly structure provided for one embodiment of the present invention.

[0042] Reference numerals:

[0043] 100, air duct body; 200, blocking member; 300, box body;

[0044] 400, refrigerated liner; 500, frozen liner;

[0045] 110, sliding groove; 120, sliding seat; 130, housing;

[0046] 140, shielding plate; 150, sealing groove; 160, air cavity;

[0047] 210, sliding joint;

[0048] 310, foaming flow channel; 320, flow gap; 330, back plate; 340, injection hole;

[0049] 311, first flow channel; 312, second flow channel; 313, third flow channel. DETAILED DESCRIPTION

[0050] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0052] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] First, refer to Figure 1 and Figure 2 As shown, the internal structure of the existing refrigerator is generally equipped with a refrigerating liner 400 and a freezing liner 500. After the refrigerating liner 400 and the freezing liner 500 are installed in the refrigerator body 300, they will form an interlayer space with the inner wall of the body 300. The interlayer space constitutes a foaming flow channel 310. The foaming flow channel 310 needs to be injected with foaming material to form a foaming layer to ensure the heat preservation effect of the refrigerating liner 400 and the freezing liner 500. Generally, a refrigerating compartment is formed inside the refrigerating liner 400 for storing food that needs to be kept fresh, and a freezing liner 500 is formed inside the freezing liner 500 for storing food that needs to be frozen.

[0054] Because the functions of the refrigerating chamber and the freezing chamber formed in the refrigerating liner 400 and the freezing liner 500 are different, the requirements for the foaming material in the foaming channel 310 around the refrigerating liner 400 and the freezing liner 500 are also different. That is, the temperature of the freezing chamber for storing food that needs to be frozen is generally lower than that of the refrigerating liner 400 for storing food that needs to be kept fresh. The quality requirements of the foaming layer around the freezing liner 500 are higher. Therefore, more foaming material is needed around the freezing liner 500 than around the refrigerating chamber to ensure the low temperature maintenance effect around the freezing liner 500.

[0055] However, when the foaming channel 310 around the freezing liner 500 and the refrigerating liner 400 is injected with a single bottom gun, a density distribution trend of higher top and lower bottom is likely to appear in the foaming channel 310, and when the width difference between the foaming channel 310 around the refrigerating liner 400 and the foaming channel 310 around the freezing liner 500 is small, this density distribution of higher top and lower bottom is particularly obvious.

[0056] Continue to refer Figure 1 and Figure 2As shown, after research, it was found that when a single gun is used to inject foaming material at the bottom of the refrigerator, the foaming material is in a liquid stage. After the foaming material enters the foaming channel 310, it will first fall into the vicinity of the refrigerated liner 400 under the pressure of injection. At this time, the foaming channel 310 around the refrigerated liner 400 becomes the dropping point of the foaming material, and the amount of foaming material injected at the dropping point is greater than that at other positions. Moreover, due to the lack of pressure difference between the refrigerated liner 400 and the frozen liner 500, the foaming material will also expand uniformly toward the refrigerated liner 400 and the frozen liner 500. Therefore, since the location of the foaming material falling point is formed around the refrigerated liner 400, there is more foaming material around the refrigerated liner 400, which will result in that when the foaming material is injected into the bottom of the refrigerator with a single gun, the foaming density around the frozen liner 500 will be lower than the foaming density around the refrigerated liner 400. In order to meet the foaming layer requirement around the frozen liner 500, more foaming material has to be injected around the frozen liner 500 to form a higher density foaming layer.

[0057] Moreover, in the box body 300 structure where the width difference between the foaming channel 310 around the refrigerated liner 400 and the foaming channel 310 around the frozen liner 500 is relatively large, the foaming material will preferentially expand toward the wider foaming channel 310 rather than expanding in the expected direction. This is also the reason why the density distribution after foaming in refrigerators with similar structures in the past is different, which will also lead to rough foaming molding and poor foaming quality.

[0058] In order to solve the above technical problems, this application provides the following technical solutions.

[0059] In the solution of the present application, based on the disadvantage that the aforementioned foaming material enters the foaming channel 310 and the landing point is around the refrigerated liner 400, resulting in insufficient foaming material around the freezing liner 500, the present application provides an air duct component. After the air duct component is assembled inside the refrigerator body 300, the landing point of the foaming material can be changed, thereby solving the problem of insufficient foaming around the freezing liner 500.

[0060] like Figures 3 to 6As shown, a duct assembly provided in this embodiment includes a duct body 100; the duct assembly further includes a blocking member 200, which is arranged outside the duct body 100. When the duct assembly is assembled in the refrigerator body 300, the blocking member 200 is used to extend into the foaming flow channel to block a part of the foaming material from flowing to the area with higher foaming density in the foaming flow channel. At this time, the duct body 100 can adopt the structure of the existing duct, and the duct body 100 can form a wind cavity 160 inside. When the duct body 100 is relatively assembled with the refrigerated liner 400 or the frozen liner 500, the wind cavity 160 in the duct body 100 can be connected to the refrigerated compartment in the refrigerated liner 400, and can also be connected to the frozen compartment in the frozen liner 500, so as to form a wind path structure for cold air flow between the refrigerated compartment and the frozen compartment. The duct body 100 is not limited too much here.

[0061] Based on the structure of the air duct body 100, the air duct assembly of the present application is additionally provided with a blocking member 200 that can be assembled on the air duct body 100. The blocking member 200 is not assembled at the corresponding position of the internal air cavity 160 of the air duct body 100, but is assembled on the outside of the air duct body 100. Therefore, the function of the blocking member 200 is not to guide the cold air flowing between the refrigerated compartment and the frozen compartment. Since the blocking member 200 is located outside the air duct body 100, when the air duct assembly is assembled in the refrigerator body 300 as a whole, the blocking member 200 located outside the air duct body 100 will inevitably extend into the foaming flow channel 310 formed between the refrigerated liner 400, the frozen liner 500 and the inner wall of the refrigerator body 300. Therefore, when the foaming material enters the foaming flow channel 310, the blocking member 200 extending into the foaming flow channel 310 will form a certain degree of obstruction to the advancement of a part of the foaming material. The air duct assembly provided in the present application is based on the blocking effect of the blocking member 200 located outside the air duct body 100 on the foaming material, and adjusts the drop point of the foaming material entering the foaming flow channel 310 as expected. The above-mentioned expected adjustment effect is to use the blocking member 200 to block a part of the foaming material from entering the vicinity of the refrigeration inner tank 400.

[0062] Since the air duct assembly is a component structure assembled in the refrigerator box 300, the blocking member 200 thereon can only play a blocking role on the foaming material when the air duct assembly is assembled in the refrigerator box 300 as a whole and forms a certain matching structure with the internal space of the refrigerator box 300. Therefore, referring to Figures 7 to 10 As shown, the description will be clearer when combined with the refrigerator structure in which the air duct assembly is integrally assembled in the refrigerator body 300. Figures 7 to 10In the refrigerator structure shown, the refrigerator box 300 first needs to have an injection hole 340, and the refrigerated liner 400 and the frozen liner 500 are also arranged in the inner cavity of the box 300 and form a foaming flow channel 310 between the inner wall of the box 300. Among them, the foaming flow channel 310 includes a first flow channel 311 located between the refrigerated liner 400 and the inner wall of the box 300, a second flow channel 312 located between the frozen liner 500 and the inner wall of the box 300, the injection hole 340 is connected to the second flow channel 312, and the third flow channel 313 is located between the refrigerated liner 400 and the frozen liner 500. The first flow channel 311, the second flow channel 312 and the third flow channel 313 constitute the entire flow channel structure through which the foaming material can move forward.

[0063] At this time, the air duct assembly needs to be set in the inner cavity of the box body 300, and ensure that the blocking member 200 can extend between the first flow channel 311 and the second flow channel 312, and a flow gap 320 is formed between the top end of the blocking member 200 and the inner wall of the box body 300. When the air duct assembly is assembled in the refrigerator body 300 in this structural form, the blocking member 200 will form a certain degree of blocking effect between the first flow channel 311 and the second flow channel 312, and the drop point of the foaming material is adjusted between the first flow channel 311 and the second flow channel 312, that is, when the foaming material moves from the periphery of the freezing liner 500 to the periphery of the refrigerating liner 400, a certain degree of blocking is formed for the foaming material, so that even when the foaming material mainly moves toward the periphery of the refrigerating compartment under the infusion pressure, more foaming material can be retained around the freezing liner 500 through the blocking effect of the blocking member 200, and the injection amount of the foaming material around the refrigerating liner 400 and the freezing liner 500 is adjusted. When ensuring that there is enough foaming material around the refrigerating liner 400, more foaming material is retained around the freezing liner 500, and the foaming density around the freezing liner 500 is increased without increasing the overall injection amount of the foaming material, and the distribution of the foaming material is reasonably distributed.

[0064] When the blocking member 200 is conducting flow distribution for the foaming material, the relative positional relationship between the blocking member 200 and the refrigerator body 300 is crucial. In order to improve the flow diversion effect of the blocking member 200 on the foaming material under different requirements, the blocking member 200 is further movably connected to the air duct body 100. The movably connected can be understood as the assembly position and assembly angle between the blocking member 200 and the air duct body 100 can be adjusted at will according to the requirements, for example, the blocking member 200 can adjust the connection angle relative to the air duct body 100, or the blocking member 200 can adjust the connection position relative to the air duct body 100. In order to be able to adjust the connection angle or connection position of the blocking member 200 relative to the air duct body 100, a corresponding detachable connection structure needs to be arranged between the blocking member 200 and the air duct body 100. The detachable connection structure can be a separate mechanical structure or a matching structure respectively fixed on the air duct body 100 or the blocking member 200. For example, the blocking member 200 can be assembled using any structure that can adjust the connection position and connection angle of the blocking member 200 relative to the air duct body 100, such as a plug-in structure, a slide rail structure, an adhesive structure, a universal shaft structure, etc., and no limitation is made here.

[0065] Further, in a specific embodiment, Figure 8 and Fig. 9 As shown, the air duct body 100 is provided with a linear sliding groove 110, and the blocking member 200 is provided with a sliding portion 210, and the blocking member 200 is slidably assembled with the sliding groove 110 through the sliding portion 210 to adjust its connection position on the air duct body 100. At this time, the air duct body 100 and the blocking member 200 are respectively formed with a sliding groove 110 and a sliding portion 210 that can be relatively slidably assembled, and through the relative sliding assembly of the sliding groove 110 and the sliding portion 210, not only can the blocking member 200 be stably assembled on the air duct body 100, but also the connection position of the blocking member 200 on the air duct body 100 can be adjusted when necessary. This connection structure that can adjust the actual position of the blocking member 200 is more suitable for the actual needs of different refrigerators for the foaming effect during the foaming process. For example, for the different insulation requirements of different positions corresponding to the distribution of the intermediate chambers of the refrigeration liner 400 and the freezing liner 500 in the refrigerator body 300, the blocking member 200 can adjust the blocking position of the foaming material by adjusting its position on the air duct body 100. Therefore, after the blocking member 200 is assembled into the refrigerator body 300, the actual blocking position of the foaming material can be adjusted according to the needs to dynamically adjust the distribution of the foaming material. This adjustable structure of the blocking member 200 can be suitable for more models of refrigerators.

[0066] For example, in this embodiment, since the sliding part 210 and the sliding groove 110 are slidably connected along the length direction of the sliding groove 110, after the sliding part 210 is slidably inserted into the sliding groove 110, the position of the sliding part 210 actually inserted and fixed in the sliding groove 110 can be adjusted by linearly sliding the sliding part 210 relative to the sliding groove 110, thereby adjusting the actual connection position of the blocking member 200 relative to the air duct body 100. In order to ensure that the blocking member 200 can also obtain a stable plug-in assembly structure after adjustment, further, the sliding part 210 is linear, and the length of the sliding groove 110 is greater than the length of the sliding part 210. Therefore, within a certain adjustment range, even if the sliding part 210 slides relative to the sliding groove 110 and changes its position, the entire sliding part 210 is still located in the sliding groove 110, which can ensure that the connection strength of the blocking member 200 relative to the air duct body 100 does not change, and the assembly stability can also be effectively guaranteed.

[0067] Further, in order not to damage the structure of the original air duct body 100 and to improve the assembly stability of the blocking member 200, continue to refer to Figure 8 and Fig. 9 As shown, the air duct body 100 is provided with a sliding seat 120, and the sliding groove 110 is provided on the sliding seat 120; the blocking member 200 is a plate-shaped member, and the sliding portion 210 is located on the side of the plate-shaped member. At this time, the sliding seat 120 specially used for providing the sliding groove 110 added to the air duct body 100 will not cause the problem of thinning of the wall thickness at the location where the sliding groove 110 is provided, even if the sliding groove 110 is provided on the air duct body 100, so the overall structural stability of the original air duct body 100 is guaranteed. At the same time, after the sliding groove 110 is provided on the sliding seat 120, the thickness and depth of the sliding seat 120 and the sliding groove 110 can be set in a targeted manner according to the assembly strength of the blocking member 200, which can ensure that a more stable assembly structure is obtained after the blocking member 200 is assembled on the air duct body 100.

[0068] As for the structure of the sliding part 210 and the sliding groove 110, the sliding part 210 and the sliding groove 110 can be any groove-shaped structure. When the sliding part 210 and the sliding groove 110 are relatively slidably inserted and assembled, at least a stable connection between the two can be achieved through the relative interference fit of the sliding part 210 and the sliding groove 110. However, the sliding part 210 not only needs a stable connection structure, but also needs to be able to slide smoothly in the sliding groove 110 during adjustment. Therefore, further, continue to refer to Figure 8 and Fig. 9As shown, the cross-sections of the sliding groove 110 and the sliding portion 210 are both T-shaped. When the T-shaped sliding groove 110 and the sliding portion 210 are relatively slidably inserted and assembled, they can form a certain relative bite effect, which can prevent the two from being relatively separated. Therefore, this assembly structure can not only ensure the assembly stability of the two, but also enable the two to have a smooth sliding effect when they are relatively slidably adjusted.

[0069] In one embodiment, the air duct body 100 includes a shell 130, and the blocking member 200 is arranged on the shell 130, wherein an air cavity 160 is formed inside the shell 130; the air duct body 100 also includes a shielding plate 140, which is arranged on the shell 130 and forms a sealing groove 150 together with the outer wall of the shell 130, which is used to seal and fit the outer wall of the refrigerated liner 400 and / or the frozen liner 500. Therefore, when the air duct assembly is assembled inside the refrigerator body 300, the air duct assembly can form a matching assembly structure with the refrigerated liner 400 and the frozen liner 500, and the shielding plate 140 can be attached to the outer wall of the refrigerated liner 400 and the frozen liner 500, and the sealing groove 150 formed by the shielding plate 140 forms a seal on the air cavity 160 position of the refrigerated liner 400 and the frozen liner 500, so as to prevent the foaming material from penetrating from the gap during the expansion process, resulting in the risk of bubble leakage.

[0070] Continue to refer Figures 7 to 10 As shown, the present application also provides a box frame, including a box 300, having an injection hole 340; the refrigerator also includes a refrigeration liner 400 and a freezing liner 500, both of which are arranged in the inner cavity of the box 300, and form a foaming channel 310 between the inner wall of the box 300; the foaming channel 310 at least includes a first channel 311 located between the refrigeration liner 400 and the inner wall of the box 300, and a second channel 312 located between the freezing liner 500 and the inner wall of the box 300, and the injection hole 340 is connected to the second channel 312; the refrigerator also includes the air duct assembly, which is arranged in the inner cavity of the box 300; the blocking member 200 extends between the first channel 311 and the second channel 312, and a flow gap 320 is formed between the top end thereof and the inner wall of the box 300. Since the specific structure, functional principle and technical effects of the air duct assembly have been described in detail in the previous text, they will not be repeated here. Any technical content related to the air duct assembly can refer to the previous records.

[0071] It should be noted that the width of the circulation gap 320 is 10mm to 20mm. For example, the width of the circulation gap 320 is 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, etc. Within the above size range of the circulation gap 320, a reasonable blocking effect can be provided for the flow of the foaming material, because if the width of the circulation gap 320 is too small and the resistance is too large, the density of the frozen foaming layer of the box 300 will be too high, and if the width of the circulation gap 320 is too large, the effect of the flow guidance will be reduced, and it will not be possible to reasonably adjust the distribution of the foaming material. At the same time, the blocking member 200 is inclined toward the first flow channel 311, and the inclined direction is consistent with the direction of the foaming material flow during injection, which can form a reasonable blocking effect for the foaming material.

[0072] In one embodiment, the refrigerated liner 400 and the frozen liner 500 are arranged vertically, and the injection hole 340 of the foaming channel 310 is located at the bottom of the box body 300. At this time, the foaming material can be injected from the bottom of the refrigerator box body 300, and then pass around the frozen liner 500 first, and when it continues to move around the refrigerated liner 400, it will be blocked to a certain extent by the blocking member 200, thereby changing the foaming material drop point. The air duct assembly is located between the refrigerated liner 400 and the frozen liner 500, and the blocking member 200 extends into the foaming channel 310 toward the back plate 330 of the box body 300, and the injection hole 340 is located at the back of the box body 300. Therefore, the blocking member 200 can mainly adjust the distribution of the foam material on the side of the back plate 330. Of course, the air duct assembly and the blocking member 200 can also be set at the side plate position of the refrigerator body 300 according to the needs to adjust the distribution of the foam material at the side plate position, which will not be repeated here. Among them, the effective blocking width of the blocking member 200 is less than the width of the back plate 330 of the box body 300. At this time, although the blocking member 200 can block the foam material on the back plate 330 of the box body 300, it is limited to forming a blocking effect in the path of a part of the back plate 330. In addition, the effective blocking width of the blocking member 200 can also be expanded or reduced according to the needs to form a more significant or less severe blocking effect on the foam material on the side of the back plate 330 of the refrigerator body 300.

[0073] The present application also provides a foaming method for a refrigerator, comprising the following steps: setting a blocking member outside the air duct of the refrigerator so that the blocking member extends into the foaming flow channel of the refrigerator; injecting foaming material into the foaming flow channel, and in the process of the foaming material flowing, using the blocking member to block a part of the foaming material from flowing to the area with higher foaming density in the foaming flow channel. Based on the structure of the box frame, it is also equivalent to injecting foaming material into the second flow channel 312 along the injection hole 340, and in the process of the foaming material moving toward the first flow channel 311, using the blocking member 200 to block a part of the foaming material from entering the first flow channel 311. It can be seen from the above that the blocking member 200 can be used to adjust the actual drop point of the foaming material, and then adjust the actual distribution state of the foaming material. For details, please refer to the description of the function of the blocking member 200 in the previous text, which will not be repeated here.

[0074] Furthermore, in one embodiment, when the blocking member 200 is used to block the foaming material, the connection position of the blocking member relative to the air duct can also be adjusted, thereby adjusting the blocking position of the foaming material flow. For example, the air duct assembly is installed in the refrigerator body 300, so that the blocking member 200 extends into the foaming flow channel 310 of the refrigerator to block a part of the foaming material from entering the surrounding of the refrigerated liner 400; the connection position of the blocking member 200 relative to the air duct assembly is adjusted, thereby adjusting the blocking position of the foaming material. Therefore, when the blocking member 200 is used to adjust the distribution of the foaming material, the adjustment position of the foaming material can also be changed according to actual needs to be suitable for refrigerators of different models. For details, please refer to the description of the change of the position of the blocking member 200 relative to the air duct body 100 in the previous text, which will not be repeated here.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An air duct assembly, characterized in that: include: Air duct body; A blocking member, arranged outside the air duct body, and used to extend into the foaming flow channel to block a portion of the foaming material from flowing to a region with a higher foaming density in the foaming flow channel; The blocking member is movably connected to the air duct body; The blocking member may adjust a connection angle relative to the air duct body; and / or, the blocking member may adjust a connection position relative to the air duct body.

2. The air duct assembly according to claim 1, characterized in that: The air duct body is provided with a linear sliding groove, the blocking member is provided with a sliding portion, and the blocking member is slidably assembled with the sliding groove via the sliding portion to adjust its connection position on the air duct body.

3. The air duct assembly according to claim 2, characterized in that: The air duct body is provided with a sliding seat, and the sliding groove is opened on the sliding seat; the blocking member is a plate-shaped member, and the sliding portion is located on the side of the plate-shaped member.

4. The air duct assembly according to claim 2, characterized in that: The sliding portion is in a straight line shape, and the length of the sliding groove is greater than the length of the sliding portion.

5. The air duct assembly according to claim 2, characterized in that: The cross sections of the sliding groove and the sliding portion are both T-shaped.

6. The air duct assembly according to any one of claims 1 to 5, characterized in that: The air duct body comprises: a housing, wherein the blocking member is arranged on the housing; The shielding plate is arranged on the outer shell and together with the outer wall of the outer shell forms a sealing groove for sealingly fitting the outer wall of the refrigerated liner and / or the frozen liner.

7. A box frame, characterized in that: include: A box body having a material injection hole; The refrigerated liner and the frozen liner are both arranged in the inner cavity of the box body, and form a foaming flow channel with the inner wall of the box body; the foaming flow channel at least includes a first flow channel located between the refrigerated liner and the inner wall of the box body, and a second flow channel located between the frozen liner and the inner wall of the box body, and the injection hole is connected to the second flow channel; The air duct assembly as described in any one of claims 1 to 6 is arranged in the inner cavity of the box; the blocking member extends between the first flow channel and the second flow channel, and a flow gap is formed between the top end thereof and the inner wall of the box.

8. The box frame according to claim 7, characterized in that: The width of the flow gap is 10 mm to 20 mm.

9. The box frame according to claim 7, characterized in that: The blocking member is arranged to be inclined toward the first flow channel.

10. The box frame according to claim 7, characterized in that: The refrigerating inner container and the freezing inner container are arranged up and down, and the injection hole of the foaming flow channel is located at the bottom of the box body.

11. The box frame according to claim 10, characterized in that: The air duct assembly is located between the refrigeration liner and the freezing liner, the blocking member extends into the foaming flow channel toward the back plate of the box body, and the injection hole is located at the back of the box body.

12. The box frame according to claim 11, characterized in that: The effective blocking width of the blocking member is smaller than the back plate width of the box body.

13. A foaming method for a refrigerator, characterized in that: The steps include: A blocking member is arranged outside the air duct of the refrigerator so that the blocking member extends into the foaming flow channel of the refrigerator; The foaming material is injected into the foaming flow channel, and during the flow of the foaming material, the blocking member is used to block a portion of the foaming material from flowing to the region with a higher foaming density in the foaming flow channel.

14. The foaming method according to claim 13, characterized in that: The connection position of the blocking member relative to the air duct is adjusted, thereby adjusting the blocking position for the flow of the foaming material.

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