Flow guide pipe and refrigeration equipment

Abstract

The utility model provides a flow guide pipe and refrigeration equipment, the flow guide pipe is used for the refrigeration equipment, the flow guide pipe comprises a first pipe body, one end of the first pipe body is provided with a feed inlet, the first pipe body comprises a first flat pipe section, and the first flat pipe section is communicated with the feed inlet; any second pipe body comprises a second flat pipe section, the second flat pipe section is arranged at the end, away from the feeding port, of the first flat pipe section and communicated with the first flat pipe section, a discharging port is formed in the end, away from the first pipe body, of the second pipe body, and the second flat pipe section is communicated with the discharging port.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a flow guide pipe and a refrigeration device. Background Art

[0002] At present, with the improvement of people's living standards, the demand for high volume ratio refrigeration equipment is increasing. Under this trend, the thickness of the insulation layer of refrigeration equipment has been greatly reduced, making product manufacturing more difficult, and causing problems such as air entrapment, cavitation, and poor fluidity in foaming materials. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0004] To this end, a first aspect of the utility model provides a flow guide tube.

[0005] The second aspect of the utility model also provides a refrigeration device.

[0006] In view of this, the first aspect of the utility model proposes a guide tube for refrigeration equipment, the guide tube comprising: a first tube body, one end of the first tube body is provided with a feed port, the first tube body comprises a first flat tube segment, the first flat tube segment is connected to the feed port; at least two second tube bodies, any second tube body comprises a second flat tube segment, the second flat tube segment is arranged at one end of the first flat tube segment away from the feed port and is connected to the first flat tube segment, the second tube body one end away from the first tube body is provided with a discharge port, the second flat tube segment is connected to the discharge port.

[0007] The flow guide tube provided by the utility model comprises a first tube body and at least two second tube bodies, one end of the first tube body is provided with a feed port, the first tube body comprises a first flat tube section, the second tube body comprises a second flat tube section, and the second flat tube section is provided at one end of the first flat tube section away from the feed port, so as to realize the connection between the first tube body and the second tube body, so that the material enters the first tube body from the feed port, flows to the second flat tube section through the first flat tube section of the first tube body, and then flows out from the discharge port of the second tube body, thereby realizing the guidance of the material, and the material drop position can be reasonably allocated, so as to avoid the accumulation of the material in one position, which leads to the occurrence of problems such as uneven foaming cavity, foaming cavities, and trapped air in the refrigeration equipment. In addition, the provision of the first flat tube section and the second flat tube section can also reduce the overall thickness of the flow guide tube, so as to facilitate installation in a narrow flow channel, ensure the foaming effect of the refrigeration equipment, reduce the processing difficulty, and ensure the smooth flow of the material.

[0008] The flow guide tube provided by the utility model may also have the following additional technical features:

[0009] In some possible designs, the sum of the cross-sectional areas of the second flat tube segments of at least two second tube bodies is the first area; the cross-sectional area of ​​the first flat tube segment is the second area, and the first area is less than or equal to the second area, wherein the cross-sectional area of ​​the second flat tube segment is the cross-sectional area along a direction perpendicular to the length of the second flat tube segment, and the cross-sectional area of ​​the first flat tube segment is the cross-sectional area along a direction perpendicular to the length of the first flat tube segment.

[0010] In this design, the sum of the cross-sectional areas of the second flat tube sections of at least two second tube bodies is the first area, the cross-sectional area of ​​the first flat tube section is the second area, and the first area is less than or equal to the second area. When the material flows from the first flat tube section of the first tube body to all the second flat tube sections, the material speed can be prevented from being reduced, thereby ensuring the material filling speed. At the same time, it can also be prevented from carrying bubbles after the material space is enlarged, resulting in the occurrence of voids and trapped air in the filled material.

[0011] The cross section of the second flat tube segment is a cross section along a direction perpendicular to the length of the second flat tube segment, and correspondingly, the cross section of the first flat tube segment is a cross section along a direction perpendicular to the length of the first flat tube segment.

[0012] In some possible designs, the ratio of the second area to the first area is greater than or equal to 1.1 and less than or equal to 1.2.

[0013] In this design, if the second area is much larger than the first area, the material will be blocked and the discharge speed will be affected. Therefore, the ratio of the second area to the first area is set between 1.1 and 1.2, so that the first area is slightly smaller than the second area, thereby ensuring that the speed of the material does not decrease when it flows to the second flat tube section.

[0014] In some possible designs, the cross-sectional height of the first flat tube segment is greater than or equal to 12 mm and less than or equal to 15 mm; the cross-sectional height of the second flat tube segment is greater than or equal to 12 mm and less than or equal to 15 mm.

[0015] In this design, the cross-sectional height of the first flat tube segment is between 12 mm and 15 mm, and the cross-sectional height of the second flat tube segment is between 12 mm and 15 mm, which reduces the space occupied by the first flat tube segment and the second flat tube segment, making it easier to install in a narrow flow channel, ensuring the ultra-thin flow channel design of the refrigeration equipment and increasing the internal volume of the refrigeration equipment.

[0016] In some possible designs, the cross-sectional height of the first flat tube segment is equal to the cross-sectional height of the second flat tube segment.

[0017] In this design, the cross-sectional height of the first flat tube section is equal to the cross-sectional height of the second flat tube section, so as to facilitate the connection between the two. At the same time, the overall thickness of the guide tube can be ensured, thereby facilitating installation in a narrow flow channel.

[0018] In some possible designs, the cross-section of the first flat tube segment is any one of a waist-shaped, rectangular, and elliptical shape; the cross-section of the second flat tube segment is any one of a waist-shaped, rectangular, and elliptical shape.

[0019] In this design, the cross-sectional shape of the first flat tube segment can be any one of a waist shape, a rectangle, and an ellipse, and the cross-sectional shape of the second flat tube segment can also be any one of a waist shape, a rectangle, and an ellipse, so that the first flat tube segment and the second flat tube segment are relatively flat, thereby reducing the overall height of the guide tube.

[0020] In some possible designs, the second tube body also includes: a flat section, which is connected to the second flat tube section, the flat section is located at one end of the second flat tube section away from the first flat tube section, and the discharge port is located in the flat section; in the direction away from the second flat tube section, the width of at least a part of the flat section gradually increases, and the height of at least a part of the flat section gradually decreases.

[0021] In this design, the second tube body also includes a flat section, which is arranged at one end of the second flat tube section away from the first flat tube section and is connected to the second flat tube section. The material enters the second flat tube section from the first flat tube section, and then enters the flat section from the second flat tube section, and flows out through the discharge port on the flat section, wherein at least a portion of the flat section gradually increases in width and decreases in height in a direction away from the second flat tube section, that is, the flat section gradually becomes flatter and wider, which can control the outflow state of the material, avoid entrapment of bubbles, and thereby ensure the material filling effect.

[0022] In some possible designs, the first tube body further includes: a feed section, where the feed port is located; and a transition section, where the transition section connects the first flat tube section and the feed section.

[0023] In this design, the first tube body also includes a feed section and a transition section. The feed port is arranged on the feed section. The transition section connects the first flat tube section and the feed section to achieve a transition between the first flat tube section and the feed section.

[0024] In some possible designs, the cross-sectional shape of the feed section is circular.

[0025] In this design, the cross-sectional shape of the feed section is circular, which can match the shape of the injection gun head, making the connection between the injection gun head and the feed section tighter, thereby avoiding leakage from the connection between the two.

[0026] In some possible designs, the angle between any second tube and the first tube is greater than 90°.

[0027] In this design, the angle between the second tube body and the first tube body is greater than 90°, so that the first tube body and the second tube body are set at an obtuse angle, reducing the flow resistance of the material at the connection between the two, thereby avoiding the loss of material energy and ensuring that the material can be transported to various parts of the foaming chamber of the refrigeration equipment.

[0028] According to a second aspect of the present invention, a refrigeration device is also proposed, comprising: a flow guide pipe as proposed in any of the above technical solutions.

[0029] The refrigeration equipment provided in the second aspect of the utility model comprises the flow guide pipe proposed in any of the above technical solutions, and therefore has all the beneficial effects of the flow guide pipe.

[0030] In some possible designs, the refrigeration device further includes: a shell; an inner liner, which is arranged in the shell, and the shell and the inner liner enclose a foaming cavity, and the guide pipe is arranged in the foaming cavity to transport the foaming material into the foaming cavity through the guide pipe.

[0031] In this design, the refrigeration equipment also includes a shell and an inner tank. The inner tank is arranged in the shell and encloses a foaming cavity together with the shell. The guide pipe is arranged in the foaming cavity, and then the foaming material is transported into the foaming cavity through the guide pipe to achieve filling of the foaming cavity, thereby ensuring the foaming quality of the refrigeration equipment and improving the thermal insulation performance of the refrigeration equipment.

[0032] In some possible designs, the shell includes a first wall and a second wall arranged opposite to each other; the feed port is close to the first wall, the first tube body extends toward the second wall, and the second tube body is located at one end of the first tube body close to the second wall so that the discharge port is close to the second wall; the discharge ports on at least two second tube bodies are respectively close to two opposite side walls of the shell.

[0033] In this design, the shell includes a first wall surface and a second wall surface that are arranged opposite to each other, the feed port is close to the first wall surface, and the discharge port is close to the second wall surface, so that the guide tube extends from the first wall surface to the second wall surface as a whole, so that the foaming material can be transported to the position where the first wall surface of the box body is located, so that the foaming material can be injected into each part of the foaming cavity, avoiding the occurrence of foaming cavities and trapped air. In addition, the discharge ports of at least two second tube bodies are respectively close to the two opposite side walls of the shell, so that the material can be transported to the parts on both sides of the shell, thereby avoiding the material from being concentrated in one position, so that the foaming material at each position in the foaming cavity of the refrigeration equipment is more uniform.

[0034] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0036] Figure 1 One of the structural schematic diagrams of the flow guide tube according to one embodiment of the utility model is shown;

[0037] Figure 2A second structural schematic diagram of a flow guide tube according to an embodiment of the utility model is shown;

[0038] Figure 3 One of the structural schematic diagrams of the second tube body of an embodiment of the utility model is shown;

[0039] Figure 4 The second structural schematic diagram of the second tube body of an embodiment of the utility model is shown;

[0040] Figure 5 A schematic structural diagram of a first flat tube segment and a second flat tube segment in one embodiment of the utility model is shown;

[0041] Figure 6 The schematic diagram of the structure of a refrigeration device according to one embodiment of the utility model is shown.

[0042] in, Figures 1 to 6 The corresponding relationship between the reference numerals and the component names is as follows:

[0043] 1 guide tube, 10 first tube body, 100 feed port, 102 first flat tube section, 104 feed section, 106 transition section, 12 second tube body, 120 second flat tube section, 122 discharge port, 124 flat section, 2 refrigeration equipment, 20 shell, 200 first wall surface, 202 second wall surface, 22 liner, 24 foaming cavity. DETAILED DESCRIPTION

[0044] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0045] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0046] Refer to the following Figures 1 to 6 The flow guide pipe 1 and the refrigeration device 2 proposed according to some embodiments of the utility model are described.

[0047] like Figure 1 and Figure 2 As shown, according to an embodiment of the present invention, the present invention provides a flow guide tube 1 for use in a refrigeration device 2 . The flow guide tube 1 includes: a first tube body 10 and at least two second tube bodies 12 .

[0048] Specifically, a feed port 100 is provided at one end of the first tube body 10, and the first tube body 10 includes a first flat tube segment 102, which is connected to the feed port 100; any second tube body 12 includes a second flat tube segment 120, which is provided at an end of the first flat tube segment 102 away from the feed port 100 and is connected to the first flat tube segment 102, and a discharge port 122 is provided at an end of the second tube body 12 away from the first tube body 10, and the second flat tube segment 120 is connected to the discharge port 122.

[0049] The flow guide tube 1 provided by the utility model comprises a first tube body 10 and at least two second tube bodies 12, a feed port 100 is arranged at one end of the first tube body 10, the first tube body 10 comprises a first flat tube section 102, the second tube body 12 comprises a second flat tube section 120, the second flat tube section 120 is arranged at one end of the first flat tube section 102 away from the feed port 100, so as to realize the connection between the first tube body 10 and the second tube body 12, so that the material enters the first tube body 10 from the feed port 100, flows to the second flat tube section 120 through the first flat tube section 102 of the first tube body 10, and then flows out from the discharge port 122 of the second tube body 12, so as to realize the guidance of the material, reasonably allocate the material drop position, and avoid the accumulation of the material at one position, which may lead to the occurrence of problems such as uneven foaming cavity 24, foaming voids, and trapped air in the refrigeration equipment 2. Furthermore, the provision of the first flat tube segment 102 and the second flat tube segment 120 can also reduce the overall thickness of the flow guide tube 1, thereby facilitating installation in a narrow flow channel, ensuring the foaming effect of the refrigeration equipment 2, reducing processing difficulty, and ensuring smooth flow of materials.

[0050] It can be understood that the first flat tube section 102 and the second flat tube section 120 are both flat.

[0051] Optionally, when there are two second tube bodies 12 , the flow guide tube 1 is Y-shaped.

[0052] In a specific application, the flow guide tube 1 is used to transport the foaming material.

[0053] According to some embodiments of the present application, optionally, the sum of the cross-sectional areas of the second flat tube segments 120 of at least two second tube bodies 12 is the first area; the cross-sectional area of ​​the first flat tube segment 102 is the second area, and the first area is less than or equal to the second area, wherein the cross-sectional area of ​​the second flat tube segment 120 is the cross-sectional area along the length direction L1 perpendicular to the second flat tube segment 120, and the cross-sectional area of ​​the first flat tube segment 102 is the cross-sectional area along the length direction L2 perpendicular to the first flat tube segment 102.

[0054] In this embodiment, the sum of the cross-sectional areas of the second flat tube sections 120 of at least two second tube bodies 12 is the first area, the cross-sectional area of ​​the first flat tube section 102 is the second area, and the first area is less than or equal to the second area. When the material flows from the first flat tube section 102 of the first tube body 10 to all the second flat tube sections 120, the material speed can be prevented from being reduced, thereby ensuring the material filling speed. At the same time, it can also be prevented from carrying bubbles after the material space is enlarged, resulting in the situation where the filled material has cavities and trapped air.

[0055] The cross section of the second flat tube segment 120 is a cross section along a length direction L1 perpendicular to the second flat tube segment 120 , and correspondingly, the cross section of the first flat tube segment 102 is a cross section along a length direction L2 perpendicular to the first flat tube segment 102 .

[0056] It is understandable that the sum of any cross-sectional areas of all the second flat tube segments 120 is less than or equal to any cross-sectional area of ​​the first flat tube segment 102. Optionally, the sum of the cross-sectional areas of the portions where all the second flat tube segments 120 are connected to the first flat tube segment 102 is less than or equal to the cross-sectional area of ​​the portion where the first flat tube segment 102 is connected to the second flat tube segment 120.

[0057] Optionally, when the number of the second tube bodies 12 is two, the number of the second flat tube segments 120 is two, and the sum of the cross-sectional area of ​​the portion where one second flat tube segment 120 is connected to the first flat tube segment 102 and the cross-sectional area of ​​the portion where another second flat tube segment 120 is connected to the first flat tube segment 102 is less than or equal to the cross-sectional area of ​​the connection between the first flat tube segment 102 and the second flat tube segment 120.

[0058] Optionally, the cross-sectional area of ​​the first flat tube segment 102 remains unchanged along the length direction of the first flat tube segment 102, and the cross-sectional area of ​​the second flat tube segment 120 remains unchanged along the length direction of the second flat tube segment 120. Of course, the cross-sectional area of ​​the first flat tube segment 102 and the cross-sectional area of ​​the second flat tube segment 120 may also change gradually along the length direction.

[0059] According to some embodiments of the present application, optionally, the ratio of the second area to the first area is greater than or equal to 1.1 and less than or equal to 1.2.

[0060] In this embodiment, if the second area is much larger than the first area, the material will be blocked and the discharge speed will be affected. Therefore, the ratio of the second area to the first area is set between 1.1 and 1.2, so that the first area is slightly smaller than the second area, thereby ensuring that the speed of the material does not decrease when it flows to the second flat tube section 120.

[0061] Optionally, the ratio of the second area to the first area is equal to any value among 1.11, 1.12, 1.13, 1.14, 1.15, 1.16, 1.17, 1.18, and 1.19.

[0062] like Figure 5 As shown, according to some embodiments of the present application, optionally, the cross-sectional height H1 of the first flat tube segment 102 is greater than or equal to 12 mm and less than or equal to 15 mm; the cross-sectional height H2 of the second flat tube segment 120 is greater than or equal to 12 mm and less than or equal to 15 mm.

[0063] In this embodiment, the cross-sectional height H1 of the first flat tube segment 102 is between 12 mm and 15 mm, and the cross-sectional height H2 of the second flat tube segment 120 is between 12 mm and 15 mm, thereby reducing the space occupied by the first flat tube segment 102 and the second flat tube segment 120, making it easier to install in a narrow flow channel, ensuring the ultra-thin flow channel design of the refrigeration equipment 2, and increasing the internal volume of the refrigeration equipment 2.

[0064] In a specific application, the cross-sectional height of the first flat tube segment 102 is the same as the cross-sectional height of the second flat tube segment 120 .

[0065] Optionally, the cross-sectional heights of the first flat tube segment 102 and the second flat tube segment 120 are any values ​​among 12.5 mm, 13 mm, 13.5 mm, 14 mm, and 14.5 mm.

[0066] It should be noted that the cross-sectional heights of the first flat tube section 102 and the second flat tube section 120 are Figure 5 The height in the height direction shown.

[0067] According to some embodiments of the present application, optionally, a cross-sectional height H1 of the first flat tube segment 102 is equal to a cross-sectional height H2 of the second flat tube segment 120 .

[0068] In this embodiment, the cross-sectional height H1 of the first flat tube section 102 is equal to the cross-sectional height H2 of the second flat tube section 120 to facilitate the connection between the two. At the same time, the overall thickness of the flow guide tube 1 can be ensured, thereby facilitating installation at a location where the flow channel is narrow.

[0069] According to some embodiments of the present application, optionally, the cross-section of the first flat tube segment 102 is any one of a waist-shaped, rectangular, and elliptical shape; the cross-section of the second flat tube segment 120 is any one of a waist-shaped, rectangular, and elliptical shape.

[0070] In this embodiment, the cross-sectional shape of the first flat tube segment 102 can be any one of a waist shape, a rectangle, and an ellipse, and the cross-sectional shape of the second flat tube segment 120 can also be any one of a waist shape, a rectangle, and an ellipse, so that the first flat tube segment 102 and the second flat tube segment 120 are relatively flat, thereby reducing the overall height of the guide tube 1.

[0071] It can be understood that the waist shape is a shape with semicircles on both sides and a rectangle in the middle.

[0072] In a specific application, the cross-sectional shape of the first flat tube segment 102 is the same as the cross-sectional shape of the second flat tube segment 120 .

[0073] It should be noted that the cross section of the first flat tube segment 102 is a cross section along a length direction perpendicular to the first flat tube segment 102 , and the cross section of the second flat tube segment 120 is a cross section along a length direction perpendicular to the second flat tube segment 120 .

[0074] like Figure 3 and Figure 4 As shown, according to some embodiments of the present application, optionally, the second tube body 12 further includes: a flat section 124, which is connected to the second flat tube section 120, the flat section 124 is located at one end of the second flat tube section 120 away from the first flat tube section 102, and the discharge port 122 is provided in the flat section 124; in the direction away from the second flat tube section 120, the width H3 of at least a portion of the flat section 124 gradually increases, and the height H4 of at least a portion of the flat section 124 gradually decreases.

[0075] In this embodiment, the second tube body 12 also includes a flat section 124, which is arranged at one end of the second flat tube section 120 away from the first flat tube section 102 and is connected to the second flat tube section 120. The material enters the second flat tube section 120 from the first flat tube section 102, and then enters the flat section 124 from the second flat tube section 120, and flows out through the discharge port 122 on the flat section 124. At least a portion of the flat section 124 gradually increases in width H3 and decreases in height H4 along a direction away from the second flat tube section 120, that is, the flat section 124 gradually becomes flatter and wider, which can control the outflow state of the material and avoid entrapment of bubbles, thereby ensuring the material filling effect.

[0076] In a specific application, the flat section 124 is in a duckbill shape.

[0077] like Figure 1 and Figure 2 As shown, according to some embodiments of the present application, optionally, the first tube body 10 further includes: a feed section 104 , where the feed port 100 is disposed; and a transition section 106 , where the transition section 106 connects the first flat tube section 102 and the feed section 104 .

[0078] In this embodiment, the first tube body 10 further includes a feed section 104 and a transition section 106 . The feed port 100 is disposed on the feed section 104 . The transition section 106 connects the first flat tube section 102 and the feed section 104 to achieve a transition between the first flat tube section 102 and the feed section 104 .

[0079] According to some embodiments of the present application, optionally, the cross-sectional shape of the feed section 104 is circular.

[0080] In this embodiment, the cross-sectional shape of the feed section 104 is circular, so as to match the shape of the injection gun tip, so that the connection between the injection gun tip and the feed section 104 is tighter, thereby avoiding leakage from the connection between the two.

[0081] like Figure 1 As shown, according to some embodiments of the present application, optionally, the angle A between any second tube body 12 and the first tube body 10 is greater than 90°.

[0082] In this embodiment, the angle A between the second tube body 12 and the first tube body 10 is greater than 90°, so that the first tube body 10 and the second tube body 12 are set at an obtuse angle, reducing the flow resistance of the material at the connection between the two, thereby avoiding the loss of material energy and ensuring that the material can be transported to various parts of the foaming chamber 24 of the refrigeration equipment 2.

[0083] Specifically, the angle A between any second tube body 12 and the first tube body 10 is equal to any value among 100°, 110°, 120°, 130°, 140°, 150°, 160°, and 170°.

[0084] like Figure 6 As shown, according to an embodiment of the present utility model, a refrigeration device 2 is also proposed, including: a flow guide pipe 1 as proposed in any of the above embodiments.

[0085] The refrigeration device 2 provided by the utility model comprises the flow guide pipe 1 provided in any of the above embodiments, and therefore has all the beneficial effects of the flow guide pipe 1.

[0086] like Figure 6 As shown, according to some embodiments of the present application, optionally, the refrigeration device 2 also includes: a shell 20; an inner liner 22, which is arranged in the shell 20, and the shell 20 and the inner liner 22 enclose a foaming cavity 24, and the guide tube 1 is arranged in the foaming cavity 24 to transport the foaming material into the foaming cavity 24 through the guide tube 1.

[0087] In this embodiment, the refrigeration equipment 2 also includes a shell 20 and an inner liner 22. The inner liner 22 is arranged in the shell 20 and encloses a foaming cavity 24 together with the shell 20. The guide tube 1 is arranged in the foaming cavity 24, and then the foaming material is transported into the foaming cavity 24 through the guide tube 1 to achieve filling of the foaming cavity 24, thereby ensuring the foaming quality of the refrigeration equipment 2 and improving the thermal insulation performance of the refrigeration equipment 2.

[0088] According to some embodiments of the present application, optionally, the shell 20 includes a first wall 200 and a second wall 202 that are oppositely arranged; the feed port 100 is close to the first wall 200, the first tube body 10 extends toward the second wall 202, and the second tube body 12 is located at one end of the first tube body 10 close to the second wall 202 so that the discharge port 122 is close to the second wall 202; the discharge ports 122 on at least two second tube bodies 12 are respectively close to two opposite side walls of the shell 20.

[0089] In this embodiment, the shell 20 includes a first wall 200 and a second wall 202 that are arranged opposite to each other, the feed port 100 is close to the first wall 200, and the discharge port 122 is close to the second wall 202, so that the guide tube 1 as a whole extends from the first wall 200 to the second wall 202, so that the foaming material can be transported to the position of the first wall 200 of the box body, so that each part of the foaming cavity 24 can be injected with the foaming material, avoiding the problem of foaming cavities and trapped air. In addition, the discharge ports 122 of at least two second tube bodies 12 are respectively close to the two opposite side walls of the shell 20, so that the material can be transported to the parts on both sides of the shell 20, thereby avoiding the material from being concentrated in one position, so that the foaming material at each position in the foaming cavity 24 of the refrigeration equipment 2 is more uniform.

[0090] In a specific application, the first wall surface 200 is the bottom wall of the refrigeration device 2 , and the second wall surface 202 is the top wall of the refrigeration device 2 .

[0091] It should be noted that the refrigeration equipment 2 includes a refrigerator, a freezer, etc.

[0092] In specific applications, under the development trend of high volume ratio refrigerators, the thickness of the refrigerator insulation layer has been greatly reduced, resulting in increased difficulty in product manufacturing, and problems such as air entrapment and cavitation in the foaming material. The present application proposes a flow guide pipe for conveying foaming material when the refrigerator body is foaming, which can solve the problem of poor foaming material flow in a narrow foaming flow channel, the problem of interference between the injection gun head and the inner liner 22 of the refrigerator, and the problem of pre-buried structural parts in the foam layer corresponding to the refrigeration part of the refrigerator blocking the foaming material, thereby preventing the occurrence of foaming cavitation and air entrapment.

[0093] Specifically, the thinnest foaming channel can be 13mm.

[0094] The flow guide tube 1 is installed in the bubble layer space at the back of the box, that is, the space formed by the inner liner 22, the box shell, the embedded structural parts and the back plate. Optionally, the shell 20 includes the box shell and the back plate. The discharge port 122 is located on both sides of the upper part of the box. The overall shape of the flow guide tube 1 is Y-shaped, consisting of a material injection inlet (such as a feed port 100), a main line (such as a first tube body 10), a branch pipe (such as a second tube body 12) and a foam material outlet (such as a discharge port 122).

[0095] The inlet cross section of the flow guide pipe 1 is circular, matching the shape of the injection gun head. The cross sections of the main pipe and the branch pipe of the flow guide pipe 1 are oblate, and are transitionally connected by the transition section 106. The branch pipe of the flow guide pipe 1 is connected to the main pipe at an obtuse angle to reduce flow resistance.

[0096] The injection port (eg, the flat section 124) at the end of the branch pipe of the flow guide pipe 1 is in a duckbill shape, that is, it gradually widens in width and gradually thins in thickness, so as to control the discharge state of the foam material and avoid entrapment of bubbles.

[0097] Cross-sectional height of branch pipe and main pipe: 12mm~15mm.

[0098] The Y-shaped flow guide tube 1 proposed in this application does not have the problem that the inner liner 22 structure may interfere with the gun head when the bottom single gun is injected in the related art; the flow guide tube 1 proposed in this application can control the material drop position and the foaming starting position, thereby improving the foaming quality; this solution can reasonably distribute the foam filling ratio of different positions of the box; this solution can avoid the embedded parts structure on the upper part of the box to prevent structural conflict problems. This solution can achieve foaming in a narrow flow channel without voids and trapped air problems; this solution is an optimization and improvement of the single gun solution, so it can save a lot of injection gun head costs and new mold costs.

[0099] In the present invention, the term "plurality" means two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0100] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0101] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A flow guide pipe for refrigeration equipment, characterized in that: The flow guide tube comprises: A first tube body, wherein one end of the first tube body is provided with a feed port, the first tube body comprises a first flat tube section, and the first flat tube section is connected to the feed port; At least two second tube bodies, any of which includes a second flat tube segment, which is arranged at one end of the first flat tube segment away from the feed port and is connected to the first flat tube segment, and the second tube body is provided with a discharge port at one end away from the first tube body, and the second flat tube segment is connected to the discharge port.

2. The flow guide tube according to claim 1, characterized in that: The sum of the cross-sectional areas of at least two of the second flat tube sections of the second tube bodies is the first area; The cross-sectional area of ​​the first flat tube segment is the second area, and the first area is less than or equal to the second area. The cross section of the second flat tube segment is a cross section along a direction perpendicular to the length of the second flat tube segment, and the cross section of the first flat tube segment is a cross section along a direction perpendicular to the length of the first flat tube segment.

3. The flow guide tube according to claim 2, characterized in that: The ratio of the second area to the first area is greater than or equal to 1.1 and less than or equal to 1.

2.

4. The flow guide tube according to claim 2, characterized in that: The cross-sectional height of the first flat tube section is greater than or equal to 12 mm and less than or equal to 15 mm; The cross-sectional height of the second flat tube section is greater than or equal to 12 mm and less than or equal to 15 mm.

5. The flow guide tube according to claim 4, characterized in that: The cross-sectional height of the first flat tube section is equal to the cross-sectional height of the second flat tube section.

6. The flow guide tube according to claim 2, characterized in that: The cross section of the first flat tube section is any one of a waist shape, a rectangle and an ellipse; The cross section of the second flat tube section is any one of a waist shape, a rectangle and an ellipse.

7. The flow guide tube according to any one of claims 1 to 6, characterized in that: The second tube body further includes: A flat section, connected to the second flat tube section, the flat section is located at an end of the second flat tube section away from the first flat tube section, and the discharge port is located at the flat section; In a direction away from the second flat tube segment, the width of at least a portion of the flat segment gradually increases, and the height of at least a portion of the flat segment gradually decreases.

8. The flow guide tube according to any one of claims 1 to 6, characterized in that: The first tube body further comprises: A feeding section, wherein the feeding port is arranged at the feeding section; A transition section connects the first flat tube section and the feed section.

9. The flow guide tube according to claim 8, characterized in that: The cross-section of the feeding section is circular.

10. The flow guide tube according to any one of claims 1 to 6, characterized in that: An included angle between any one of the second tubes and the first tube is greater than 90°.

11. A refrigeration device, characterized in that: include: The flow guide tube according to any one of claims 1 to 10.

12. The refrigeration device according to claim 11, characterized in that: Also includes: case; The inner liner is arranged in the shell, the shell and the inner liner enclose a foaming cavity, and the guide pipe is arranged in the foaming cavity to transport the foaming material into the foaming cavity through the guide pipe.

13. The refrigeration device according to claim 12, characterized in that: The housing comprises a first wall surface and a second wall surface which are arranged opposite to each other; The feed port is close to the first wall surface, the first tube body extends toward the second wall surface, and the second tube body is located at one end of the first tube body close to the second wall surface so that the discharge port is close to the second wall surface; The discharge ports on at least two of the second tubes are respectively close to two opposite side walls of the shell.

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