Refrigerator

Abstract

The refrigerator comprises a shell, an inner container and a flow guide assembly, a material injection opening is formed in the side, close to the bottom of the refrigerator, of the shell, the inner container is arranged in the shell, the flow guide assembly is arranged between the shell and the inner container, and the flow guide assembly comprises a flow guide pipe and a flow guide plate, the flow guide pipe is a polyethylene piece, a polyvinyl chloride piece or a polyurethane piece. According to the refrigerator, the flow guide pipe is additionally arranged, the flowing direction of the injected foam material is effectively changed, and therefore the filling effect is effectively improved. In addition, the flow guide pipe is low in production cost, low in forming difficulty, high in deformability, convenient to arrange and high in applicability.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, and in particular to a refrigerator. Background Technology

[0002] Currently, the refrigerator and freezer industry widely uses rigid polyurethane foam as a support and insulation material. The most common injection method used in production is a bottom-mounted injection method with the door frame at the top. This method has wide compatibility and low cost. However, it also has many drawbacks. For example, large-sized refrigerators have long flow paths, and the foam material has poor flowability at the end, leading to poor filling. In refrigerators with complex structures, material blockage can occur during injection and foam material flow, easily resulting in material voids. In high-efficiency refrigerators, the flow channels become narrower after VIP (vacuum insulation panel) is applied, resulting in poor filling effect of the foam material in narrow channels, ultimately causing unstable product quality or performance degradation.

[0003] In related technologies, the main countermeasures to address the aforementioned shortcomings include: increasing the amount of foaming material injected to forcibly fill poorly filled areas; optimizing the internal structure of the refrigerator and rationally arranging pipes and wiring. These measures are effective in improving the filling effect of refrigerator foam materials, but they also significantly increase refrigerator manufacturing costs, lengthen the manufacturing cycle, and complicate operations. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, one objective of this invention is to provide a refrigerator in which a guide tube is added, effectively changing the flow direction of the injected foam material, thereby effectively improving the filling effect. Moreover, the guide tube has low production cost, is easy to mold, has high deformability, is convenient to arrange, and has wide applicability.

[0005] The refrigerator according to a first aspect of the present invention includes:

[0006] The outer casing has a filling port on one side near the bottom of the refrigerator;

[0007] The inner liner is located inside the outer shell;

[0008] The refrigerator also includes:

[0009] A flow guiding assembly, disposed between the outer shell and the inner liner, comprises:

[0010] A flow guide tube, one end of which is opposite to the injection port, wherein the flow guide tube is made of polyethylene, polyvinyl chloride, or polyurethane.

[0011] According to an embodiment of this utility model, the refrigerator, by adding a flow guiding component, can induce the flow of foam material, effectively changing the flow direction of the foam material flowing in from the injection port and reducing the flow resistance of the foam material. This prevents poor foam filling caused by problems such as refrigerator design structure, production equipment, or production machine type, thus ensuring the production quality of the refrigerator. Furthermore, the flow guiding component includes a flow guiding tube. The flow guiding tube can be made of polyethylene, polyvinyl chloride, or polyurethane, all of which have advantages such as low production cost, easy molding, and high deformability. In addition, by adding a flow guiding component to the refrigerator, the flow of foam material can be induced without increasing the refrigerator's production cost or installation difficulty, effectively improving the foam material filling effect and enhancing the production quality of the refrigerator.

[0012] According to some embodiments of the present invention, the guide tube has at least a first state when no material is injected and a second state after material is injected, wherein the width of the guide tube in the first state is greater than the width of the guide tube in the second state.

[0013] The specific advantages or beneficial effects of the above solution are as follows: The guide tube is a deformable tubular structure, meaning that when the guide tube is unfilled, its width is large and its height is small, effectively reducing installation difficulty. It can induce the flow of foam material without increasing the difficulty of refrigerator installation, effectively improving the filling effect of the foam material and enhancing the production quality of the refrigerator.

[0014] According to some embodiments of the present invention, when the guide tube is in the first state, the width of the guide tube is W1, wherein W1 satisfies: 41mm≤W1≤236mm; and / or, when the guide tube is in the second state, the width of the guide tube is W2, wherein W2 satisfies: 26mm≤W2≤150mm.

[0015] The specific advantages or beneficial effects of the above solution are as follows: By limiting the width of the guide tube in the first state and the width in the second state, the width of the guide tube is reasonably set in the states of being filled with foam material and not filled with foam material, so that the guide component can be applied to a variety of scenarios, and can also effectively reduce the installation difficulty of the guide component, and is also conducive to the performance of the guide tube and further improves the filling effect of foam material.

[0016] According to some embodiments of the present invention, the guide tube is connected to the inner liner, and a plurality of overflow holes are formed on the surface of the guide tube away from the inner liner, and the plurality of overflow holes are arranged along the extension direction of the guide tube.

[0017] The specific advantages or beneficial effects of the above solution are as follows: It can solve the problem of obstacles in the injection and flow of foam material during the production of refrigerator foam, which are caused by factors such as the large size of the refrigerator body or the complex internal structure, thus affecting the filling effect of the refrigerator foam material and the production quality of the refrigerator.

[0018] According to some embodiments of the present invention, the plurality of overflow holes constitute a plurality of overflow hole groups, each overflow hole group including a plurality of overflow holes arranged along the extension direction of the guide pipe, and the plurality of overflow hole groups are arranged at intervals along the width direction of the guide pipe.

[0019] The specific advantages or beneficial effects of the above scheme are as follows: The spaced arrangement of overflow holes ensures that there are a considerable number of overflow holes on the guide pipe. When a part of the guide pipe is located in a relatively narrow space, the foam material can flow out through multiple overflow holes, which is more conducive to the flow of the foam material within the guide pipe. In addition, it can also effectively prevent delamination. Furthermore, the reasonable arrangement of multiple overflow hole groups and the neat arrangement of multiple overflow holes are conducive to the mass production of guide pipes and improve production efficiency.

[0020] According to some embodiments of the present invention, the flow guiding component further includes: a connector, the connector being connected to one end of the flow guiding pipe, and the connector being opposite to the injection port.

[0021] The specific advantages or beneficial effects of the above solution are as follows: the connector can better fix the guide tube and can also open the end of the guide tube near the injection port, thereby preventing the foam material from failing to enter the guide tube as expected during injection. Furthermore, the connection method between the connector and the guide tube, and the connection method between the guide assembly and the refrigerator liner, are relatively simple, requiring only double-sided adhesive, effectively controlling the cost of the guide assembly and facilitating its large-scale production application.

[0022] According to some embodiments of the present invention, the side of the connector away from the guide tube is spaced apart from the injection port, and the distance between the side of the connector away from the guide tube and the injection port is adapted to match the distance by which the injection gun extends into the interior of the housing through the injection port.

[0023] The specific advantages or beneficial effects of the above solution are as follows: the distance between the connector and the injection port allows the injection gun to easily extend through the injection port and prevents the remaining foam material in the guide tube from returning from the injection port after the injection is completed, thus preventing overflow.

[0024] According to some embodiments of this utility model, the connecting member is a rubber member, a polyurethane member, a thermoplastic elastomer member, or a polyethylene terephthalate member.

[0025] The specific advantages or beneficial effects of the above scheme are as follows: the material selected for the connector is a relatively soft material, which is conducive to the deformation of the connector after injection, so as to facilitate the filling of foam material.

[0026] According to some embodiments of the present invention, a spring is provided at the injection port, and the spring is movable relative to the injection port to open and close the injection port.

[0027] The specific advantages or beneficial effects of the above scheme are as follows: The setting of the spring can ensure that when the foam material is filled, the remaining foam material in the guide tube will not flow out along the injection port when it flows back along the guide tube, thus ensuring the normal function of the leak sealing without adding an external leak sealing structure or equipment.

[0028] The refrigerator according to a second aspect embodiment of the present invention includes:

[0029] The outer casing has a filling port on one side near the bottom of the refrigerator;

[0030] The inner liner is located inside the outer shell;

[0031] The refrigerator also includes:

[0032] A flow guiding assembly, disposed between the outer shell and the inner liner, comprises:

[0033] A flow guide tube, one end of which is opposite to the injection port, and the flow guide tube is a deformable part.

[0034] The specific advantages or beneficial effects of the above solution are as follows: By adding a flow guiding component between the refrigerator outer shell and the inner liner, the flow of foam material can be induced, effectively changing the flow direction of the foam material flowing in from the injection port and reducing the flow resistance of the foam material. This prevents poor foam filling caused by problems with the refrigerator's design structure, production equipment, or production machine type, thus ensuring the production quality of the refrigerator. Furthermore, the flow guiding tube is a deformable component, which can be deformed according to actual conditions without affecting the internal structure of the refrigerator, and does not affect the complexity of the internal structure. With this design, by adding a flow guiding component to the refrigerator, the flow of foam material can be induced while controlling production costs and difficulty, effectively improving the filling effect of the foam material and enhancing the production quality of the refrigerator.

[0035] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0036] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0037] Figure 1 This is a schematic diagram of a refrigerator according to an embodiment of the present utility model;

[0038] Figure 2 This is a schematic diagram of another form of the refrigerator according to an embodiment of the present utility model;

[0039] Figure 3 This is a schematic diagram of the airflow guiding component of a refrigerator according to an embodiment of the present utility model;

[0040] Figure 4 This is a schematic diagram of another state of the airflow guiding component of the refrigerator according to an embodiment of the present utility model;

[0041] Figure 5 This is a schematic diagram of the airflow guiding assembly of a refrigerator according to an embodiment of the present utility model from another angle;

[0042] Figure 6 This is a front view of the connector of the refrigerator according to an embodiment of the present utility model;

[0043] Figure 7 This is a top view of the refrigerator connector according to an embodiment of the present utility model;

[0044] Figure 8 This is a left view of the connector of the refrigerator according to an embodiment of the present utility model.

[0045] Figure label:

[0046] 100. Refrigerator;

[0047] 1. Outer shell; 2. Inner liner;

[0048] 3. Flow guiding assembly; 31. Flow guiding pipe; 311. Overflow hole assembly;

[0049] 3111, Overflow hole; 312, Discharge port;

[0050] 32. Connecting parts;

[0051] 4. Injection port. Detailed Implementation

[0052] The embodiments of this utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figures 1-8 A refrigerator 100 according to a first aspect embodiment of the present invention is described.

[0053] like Figure 1 and Figure 2As shown, the refrigerator 100 according to the first aspect of the present invention includes an outer shell 1, an inner liner 2, and a flow guiding assembly 3.

[0054] Specifically, a filling port 4 is formed on the side of the outer shell 1 near the bottom of the refrigerator 100, and the inner liner 2 is located inside the outer shell 1.

[0055] For example, Figure 1 The example shows a rear view of the outer casing 1, with a filling port 4 at the bottom. During the manufacturing process of the refrigerator 100, foam material is typically injected from near the compressor (not shown) at the bottom of the refrigerator 100 using a single injection gun to fill the space between the inner liner 2 and the outer casing 1. Furthermore, the outer casing 1 protects the inner liner 2, extending the lifespan of the refrigerator 100. The outer casing 1 also limits the installation position of the inner liner 2, preventing it from shifting due to external factors.

[0056] Combination Figure 2 The refrigerator 100 also includes a flow guiding component 3, which is disposed between the outer shell 1 and the inner liner 2. This facilitates the flow of foam material injected through the filling port 4 into the space between the outer shell 1 and the inner liner 2. It should be noted that the foam material is in a liquid state during injection and solidifies after injection to form foam filling the space between the outer shell 1 and the inner liner 2. The flow guiding component 3 includes a flow guiding tube 31, one end of which is opposite to the filling port 4. The flow guiding tube 31 is made of polyethylene, polyvinyl chloride, or polyurethane.

[0057] For example, combining Figure 1 and Figure 2 A flow guiding component 3 is installed in the middle area of ​​the inner liner 2. Specifically, the lower end of the flow guiding pipe 31 is opposite to the injection port 4, and the flow guiding pipe 31 and the injection port 4 are on the same vertical line. This facilitates the flow of foam material from the lower end of the flow guiding pipe 31 into the flow guiding pipe 31, and then from the upper end of the flow guiding pipe 31 to the designated position. It should be noted that the position of the upper end of the flow guiding pipe 31 is not specifically limited, and can be extended to different positions according to the actual injection needs.

[0058] Alternatively, the flow guide tube 31 can be made of polyethylene, polyvinyl chloride, or polyurethane. That is, the flow guide tube 31 can be manufactured by processing polyethylene, polyvinyl chloride, or polyurethane.

[0059] For example, polyethylene (PE) is a common thermoplastic. PE exhibits excellent wear resistance, allowing for long-term use in high-friction environments with a very low wear rate, demonstrating extremely high abrasion resistance. PE also has good corrosion resistance to acids, alkalis, salts, and other chemicals, making it resistant to corrosion or chemical reactions, ensuring stable operation of PE parts in various harsh environments. Furthermore, PE has a low density, resulting in lighter PE parts compared to other materials, and its addition does not create a weight burden. In addition, PE parts are easy to process and mold, and it is an environmentally friendly material—non-toxic, odorless, and non-corrosive. It possesses physiological cyclic and adaptability properties, making it harmless to the human body. Its use in household appliances such as refrigerators and freezers ensures their safety.

[0060] Polyvinyl chloride (PVC) is an important synthetic material with advantages such as low cost, chemical resistance, good insulation properties, and excellent processing performance. In addition, PVC is easy to process and can be processed by molding, lamination, injection molding, extrusion, calendering, blow molding, and other methods. Moreover, the manufacturing process of PVC parts is already very mature.

[0061] Polyurethane (PU) is a high-performance material with excellent abrasion resistance. After surface treatment, it maintains stable performance in various harsh environments. It possesses high mechanical strength and elasticity, capable of withstanding significant impacts and vibrations. Furthermore, its flexibility and low-temperature resistance are outstanding, making it suitable for applications requiring dynamic seams and flexible connections. In addition, the properties of polyurethane materials can be modified by adjusting the formulation and process parameters to meet different application needs. For example, thermoplastic polyurethane elastomer (TPU) is a type of polyurethane component. TPU exhibits excellent elasticity, maintaining good elastic recovery performance over a wide deformation range, and can be repeatedly stretched and compressed without losing its original properties. TPU has excellent abrasion resistance, effectively resisting various frictions and wear, extending its service life. TPU can also be molded using various processing methods, such as injection molding, extrusion, and blow molding, with short processing cycles, enabling the rapid and efficient production of products of various shapes and sizes, improving production efficiency and reducing production costs. Furthermore, TPU exhibits excellent resistance to aging, ultraviolet radiation, and ozone. It maintains stable performance under various environmental conditions, such as high and low temperatures, humidity, and sunlight exposure, and is not prone to cracking, discoloration, or embrittlement. In addition, TPU retains good flexibility and elasticity even at low temperatures, unlike some traditional materials that become brittle and hard. TPU possesses excellent insulation and dielectric properties, making it suitable for manufacturing insulation layers for wires and cables, and housings for electronic devices. It effectively prevents electrical short circuits and leakage, ensuring the safe operation of electrical equipment. Therefore, thermoplastic polyurethane elastomer (TPU) parts demonstrate excellent adaptability when used as the cooling pipe 31 in the refrigerator 100.

[0062] Furthermore, thermoplastic polyurethane elastomer (TPU) is also a type of thermoplastic elastomer (TPE) component. That is to say, the flow guide tube 31 can also be made of other types of thermoplastic elastomer (TPE) components. Thermoplastic elastomers (TPEs) are a class of materials that combine the advantages of plastics and rubber. At room temperature, they exhibit high elasticity and high strength similar to rubber, providing good flexibility and elastic recovery. They also have good weather resistance and can be used in various climatic conditions. Thermoplastic elastomers can be molded using thermoplastic plastic processing methods such as injection molding, without the need for a vulcanization process. This not only improves production efficiency but also simplifies the processing flow, and the processing cost of thermoplastic elastomers is relatively low. Therefore, thermoplastic elastomer (TPE) components can also be used as the flow guide tube 31 of the refrigerator 100. Examples include thermoplastic styrene elastomers, thermoplastic polyester elastomers, or thermoplastic polyamide elastomers.

[0063] Therefore, by using polyethylene, polyvinyl chloride, or polyurethane as the material for the flow guide tube 31, it achieves advantages such as light weight, low cost, and easy molding. When the flow guide tube 31 is made of these materials, its light weight has virtually no impact on the overall weight of the refrigerator 100 after installation. Furthermore, the flow guide tube 31 is easy to manufacture and has low production costs. Adding the flow guide tube 31 to refrigeration equipment such as the refrigerator 100 will not affect the production cost of the refrigerator 100, making it suitable for large-scale production. In addition, the aforementioned materials all possess good insulation and wear resistance, effectively improving the performance and lifespan of the refrigerator 100 and ensuring its safety. Moreover, polyethylene, polyvinyl chloride, and polyurethane components all have good deformability, allowing them to adapt to various application scenarios and effectively improving their performance.

[0064] In other words, by limiting the material of the guide tube 31 to polyethylene, polyvinyl chloride, or polyurethane, for example, the guide tube 31 can be a deformable bag-like structure, allowing it to be folded and bent at will. The structure is simple, requires no special design, and is low-cost. Installation is simple; it only requires connecting with tape and attaching to the inner liner 2 with double-sided adhesive. Furthermore, the guide tube 31 is highly versatile, requiring no modification to the internal structure or equipment of the refrigerator 100, and can be directly used with most models and structures of refrigerators 100. Additionally, the flexible guide tube 31 can adapt to different shapes, and the outlet 312 can be adjusted in position and angle, making it suitable for different models and structures of refrigerators 100.

[0065] According to an embodiment of the present invention, the refrigerator 100, by adding a flow guiding component 3, can induce the flow of foam material, effectively changing the flow direction of the foam material flowing in from the injection port 4, and reducing the flow resistance of the foam material. This prevents poor foam filling caused by problems with the design structure, production equipment, or production machine of the refrigerator 100, thus ensuring the production quality of the refrigerator 100. Furthermore, the flow guiding component 3 includes a flow guiding pipe 31. The flow guiding pipe 31 can be made of polyethylene, polyvinyl chloride, or polyurethane, all of which have the advantages of low production cost, easy molding, and high deformability. By adding the flow guiding component 3 to the refrigerator 100, the flow of foam material can be induced without increasing the production cost or difficulty of the refrigerator 100, effectively improving the filling effect of the foam material and enhancing the production quality of the refrigerator 100.

[0066] According to some embodiments of the present invention, the guide tube 31 has at least a first state when no material is injected and a second state after material is injected, wherein the width of the guide tube 31 in the first state is greater than the width of the guide tube 31 in the second state.

[0067] In other words, before injection, the guide tube 31 is in a flat state. After the injection volume reaches its maximum, the guide tube 31 becomes full due to the filling of foam material, which is the second state. That is, the structure of the guide tube 31 changes according to the filling of foam material. When the guide tube 31 is unfilled, that is, there is no filler inside, it is in a flat state. At this time, the guide tube 31 is wider and shorter. However, when the guide tube 31 contains filler, that is, when the guide tube 31 is full, the filler inside the guide tube 31 supports it. Therefore, the guide tube 31 in this state is narrower than in the flat state, but taller.

[0068] Furthermore, the second state after the guide tube 31 is filled includes both partially filled and completely filled states. For example, the filling speed of the foam material can be controlled by the injection speed of the foam material. When the injection speed is slow, less foam material is injected into the guide tube 31 per unit time, resulting in a partially filled state. However, when the injection speed is fast, more foam material is injected into the guide tube 31 per unit time, resulting in a completely filled state. With this configuration, the width and height of the guide tube 31 can be changed according to the foam material injection speed. Because the guide tube 31 is a tubular structure, its volume remains essentially unchanged without elastic deformation. That is, when the guide tube 31 is in the unfilled first state, its width is larger and its height is smaller, thereby reducing the space occupied by the guide tube 31 within the refrigerator 100, which is more conducive to the arrangement of the guide tube 31. When the guide tube 31 is in the second state after injection, it is the opposite of the first state before injection, with a smaller width and a larger height. This facilitates rapid flow guidance within the guide tube 31, increasing the filling rate of the foam material. Furthermore, the addition of the guide tube 31 effectively changes the flow direction of the injected foam material, allowing it to be directed to different locations as needed, effectively improving the filling effect of the foam material inside the refrigerator 100. Moreover, the guide tube 31 has a simple structure, is easy to arrange, and has strong applicability.

[0069] Therefore, the guide tube 31 is a deformable tubular structure. That is, when the guide tube 31 is unfilled, its width is large and its height is small, effectively reducing installation difficulty. It can induce the flow of foam material without increasing the installation difficulty of the refrigerator 100, effectively improving the filling effect of the foam material and enhancing the production quality of the refrigerator 100.

[0070] According to some embodiments of this utility model, when the guide tube 31 is in the first state, the width of the guide tube 31 is W1, wherein W1 satisfies: 41mm≤W1≤236mm. And / or, when the guide tube 31 is in the second state, the width of the guide tube 31 is W2, wherein W2 satisfies: 26mm≤W2≤150mm.

[0071] When the flow guiding component 3 is installed and the flow guiding pipe 31 is in the first state without foam material, the width of the flow guiding pipe 31 is greater than the width of the flow guiding pipe 31 in the second state. The width of the flow guiding pipe 31 can be adjusted according to the specifications and internal structure of the refrigerator 100. When the refrigerator 100 is large, the area to be filled with foam material is large and the flow stroke is long. The width of the flow guiding pipe 31 can be adjusted to promote the flow speed of the foam material, thereby improving the foam filling effect.

[0072] For example, when the width W1 of the guide tube 31 in the first state is less than 41mm, the internal space of the guide tube 31 is reduced, decreasing the amount of foam material filling the guide tube 31 and lowering the filling efficiency. When the width W1 of the guide tube 31 in the first state is greater than 236mm, the guide tube 31 is too wide, increasing the space it occupies inside the refrigerator 100 and increasing the difficulty of installing the guide component 3. Furthermore, it also limits the installation scenarios of the guide component 3. For example, when the internal structure of the refrigerator 100 is complex, the flow channel narrows after the high-efficiency refrigerator 100 is fitted with a VIP, and the guide tube 31 is too wide, making it difficult to install in complex areas and reducing the performance of the guide tube 31. For example, the width W1 of the guide tube 31 in the first state can be 60mm, 70mm, etc., and can be adjusted according to the specifications of the refrigerator 100, etc., but is not limited to this.

[0073] When the width W2 of the guide tube 31 in its second state is less than 26mm, the amount of foam material that can be accommodated in the guide tube 31 decreases. If the foam material is poured at a high speed, a large amount of foam material may overflow, affecting the filling effect. When the width W2 of the guide tube 31 in its second state is greater than 150mm, too much foam material can be accommodated in the guide tube 31. The volume of the guide tube 31 in its filled state becomes too large, which may compress other parts inside the refrigerator 100 or cause the back panel of the refrigerator 100 to bulge. For example, the width W2 of the guide tube 31 in its second state can be 60mm, 80mm, etc., but it is not limited to these values.

[0074] Therefore, by limiting the width of the guide tube 31 in the first state to W1, which satisfies: 41mm≤W1≤236mm, and the width of the guide tube 31 in the second state to W2, which satisfies: 26mm≤W2≤150mm, the width of the guide tube 31 in both the foam-filled and foam-unfilled states is reasonably set. This makes the guide component 3 applicable to various scenarios, effectively reduces the installation difficulty of the guide component 3, and also helps to maximize the flow guiding performance of the guide tube 31 and further improve the foam filling effect.

[0075] According to some optional embodiments of this utility model, the length of the guide tube 31 is L, where L satisfies: 300mm ≤ L ≤ 1000mm. In actual production, the actual length of the guide tube 31 can be specifically set according to the specifications of the refrigerator 100. For example, the length of the guide tube 31 can be 300mm, 350mm, 400mm, 500mm, 600mm, 700mm, 800mm, 900mm, 1000mm, etc., but it is not limited to these.

[0076] According to some embodiments of this utility model, combined with Figures 1 to 3The guide tube 31 is connected to the inner liner 2. A plurality of overflow holes 3111 are formed on the surface of the guide tube 31 away from the inner liner 2, and these overflow holes 3111 are arranged along the extending direction of the guide tube 31. In the description of this utility model, "a plurality of" means two or more.

[0077] For example, in Figures 3 to 5 In the example shown, one side of the guide tube 31 is connected to the inner liner 2 to facilitate its fixation. Multiple overflow holes 3111 are arranged at equal intervals along the length of the guide tube 31. The number of overflow holes 3111 is related to the length of the guide tube 31. Of course, the multiple overflow holes 3111 can also be arranged at non-equal intervals, depending on the specific application, to better meet practical needs. Furthermore, during the filling process, when a portion of the foam material overflows along the overflow hole group 311, the foam material fills the space between the guide tube 31 and the outer shell 1 on the side facing the guide tube 31, bonding the guide tube 31 and the outer shell 1 into a whole and preventing delamination. This design solves the problem of obstruction during the foaming process of the refrigerator 100 due to factors such as the large size or complex internal structure of the refrigerator 100, which affects the filling effect of the foam material and thus the production quality of the refrigerator 100.

[0078] According to some embodiments of this utility model, in conjunction with 3 to Figure 5 Multiple overflow holes 3111 constitute multiple overflow hole groups 311, each overflow hole group 311 includes multiple overflow holes 3111 arranged along the extension direction of the guide pipe 31, and the multiple overflow hole groups 311 are arranged at intervals along the width direction of the guide pipe 31.

[0079] For example, in Figures 3 to 5 In the example, a plurality of overflow holes 3111 are provided on the side of the guide pipe 31 away from the inner liner 2 of the refrigerator 100. The plurality of overflow holes 3111 constitute three overflow hole groups 311. The three overflow hole groups 311 are arranged at intervals along the width direction of the guide pipe 31, and the plurality of overflow holes 3111 in each overflow hole group 311 are arranged at intervals along the length direction of the guide pipe 31. Preferably, the plurality of overflow holes 3111 are arranged in an array.

[0080] This design ensures that the guide pipe 31 has a considerable number of overflow holes 3111. When a portion of the guide pipe 31 is located in a relatively confined space, the foam material can flow out through multiple overflow holes 3111, which is more conducive to the flow of the foam material within the guide pipe 31. Furthermore, it effectively prevents delamination. In addition, the reasonable and orderly arrangement of the multiple overflow hole groups 311 facilitates the mass production of the guide pipe 31 and improves production efficiency. It should be noted that the number and arrangement of the overflow holes 3111 and overflow hole groups 311 can be specifically set according to actual usage conditions to better meet practical applications. For example, combined with… Figure 3 In each row, the distance between two adjacent overflow holes 3111 in the vertical direction is 100mm, and the diameter of each overflow hole 3111 is 20mm.

[0081] According to some embodiments of this utility model, combined with Figures 6 to 8 The flow guiding component 3 also includes a connector 32, which is connected to one end of the flow guiding pipe 31 and is opposite to the injection port 4.

[0082] For example, connector 32 can be Figure 4 The example shows a square tube. The connector 32 has a length of L (L=80mm), a height of H (H=50mm), and a width of W (0.1≤W≤0.3mm). Since the connector 32 needs to be used in conjunction with the guide tube 31, its length, height, and width must be set according to the first-state width W1 and the second-state width W2 of the guide tube 31 to ensure a good connection between the connector 32 and the guide tube 31. Furthermore, the shape of the connector 32 can be designed according to the actual internal structure of the refrigerator 100, for example, it can be a cube, polyhedron, or columnar shape. However, it is not limited to these. In other words, the shape of the connector 32 can be changed according to the internal structure of the refrigerator 100, and the connectors 32 are all easy to form and install, thus improving the applicability of the connector 32 and allowing it to be applied to refrigerators 100 of various specifications and designs.

[0083] Specifically, in Figures 3 to 5 In the example, the lower end of the guide tube 31 is connected to the connector 32. When connecting the connector 32 to the guide tube 31, the guide tube 31 is first fitted onto the connector 32, and then double-sided tape is used for fixation. That is, the combination of the guide tube 31 and the connector 32 can be fixed and installed with only double-sided tape. The installation method is simple and the cost is low, which effectively reduces the cost of the guide assembly 3 and enhances the practicality of the guide assembly 3.

[0084] Additionally, double-sided tape can be pre-applied to the connector 32 and the guide tube 31 on the side of the guide tube 31 without the overflow hole 3111, facilitating subsequent fixation to the inner liner 2 of the refrigerator 100. During installation of the guide assembly 3, the side of the guide tube 31 with the overflow hole 3111 should face upwards, i.e., towards the side of the refrigerator 100 outer shell 1. The connector 32 should then be fixed to the inner liner 2 with double-sided tape, with the lower end of the connector 32 directly facing the filling port 4 of the refrigerator body. The distance between the connector 32 and the filling port 4 should be consistent with the depth to which the nozzle is inserted into the filling port 4, ensuring that the foam material flowing from the filling gun nozzle directly enters the guide tube 31, preventing foam material overflow. The side of the guide tube 31 furthest from the connector 32 is the outlet 312. The outlet 312 is fixed to the inner liner with double-sided tape to prevent displacement of the outlet 312 during refrigerator body movement, rotation, and filling processes, which would affect the guide effect.

[0085] With this configuration, the connector 32 can better secure the guide tube 31 and also open up the end of the guide tube 31 near the injection port 4, thus preventing the foam material from failing to enter the guide tube 31 as expected during injection. Furthermore, the connection between the connector 32 and the guide tube 31, and between the guide assembly 3 and the inner liner 2 of the refrigerator 100, is relatively simple, requiring only double-sided adhesive. This effectively controls the cost of the guide assembly 3 and facilitates its large-scale production application.

[0086] According to some embodiments of this utility model, combined with Figure 2 The side of the connector 32 away from the guide tube 31 is spaced apart from the injection port 4, and the distance between the side of the connector 32 away from the guide tube 31 and the injection port 4 is adapted to match the distance that the injection gun extends into the housing 1 through the injection port 4.

[0087] For example, combining Figure 2 In the example shown, the lower side of the connector 32 is not connected to the filling port 4, meaning there is a certain gap between the connector 32 and the filling port 4. Specifically, the size of this gap can be set according to the actual internal conditions of the refrigerator 100. This gap between the connector 32 and the filling port 4 allows the filling gun nozzle to easily extend into the filling port 4, and the gap is matched to the distance the filling gun extends into the outer casing 1 through the filling port 4. This means that after the filling gun extends into the filling port 4, the foam material can directly enter the guide tube 31 along the connector 32, preventing overflow. Furthermore, it prevents the remaining foam material in the guide tube 31 from returning through the filling port 4 after filling, thus preventing overflow.

[0088] According to some embodiments of the present invention, the connector 32 is a rubber component, a polyurethane component, a thermoplastic elastomer component, or a polyethylene terephthalate component.

[0089] For example, rubber is a highly elastic polymer material with reversible deformation. It is elastic at room temperature, has a very low elastic modulus, and a high elongation. It can undergo large deformation under a small external force and return to its original shape after the force is removed. In addition, rubber also has good resistance to air permeability, chemical media, and electrical insulation properties. When rubber parts are used as accessories for refrigerators, they can undergo a certain degree of elastic deformation as required by production or use without easily breaking.

[0090] Polyurethane (PU) is a high-performance material with excellent abrasion resistance. After surface treatment, it maintains stable performance in various harsh environments. It possesses high mechanical strength and elasticity, enabling it to withstand significant impacts and vibrations. Furthermore, its flexibility and low-temperature resistance are outstanding, making it suitable for applications requiring dynamic joints and flexible connections. It maintains stable performance over a wide temperature range, functioning normally at both low and high temperatures. Moreover, the properties of polyurethane materials can be modified by adjusting the formulation and process parameters to meet diverse application requirements.

[0091] Thermoplastic elastomers (TPEs) are a class of materials that combine the advantages of both plastics and rubber. At room temperature, they exhibit rubber-like high elasticity and strength, providing good flexibility and elastic recovery. Furthermore, they possess good weather resistance, allowing for use in various climatic conditions. Thermoplastic elastomers can be molded using methods similar to those for thermoplastic plastics, eliminating the need for vulcanization. This not only improves production efficiency but also simplifies the processing flow. The processing cost of thermoplastic elastomers is relatively low.

[0092] Polyethylene terephthalate (PET) is a widely used polymer material. PET possesses high tensile strength and modulus, making it excellent for applications requiring high strength and hardness. Compared to materials like common polypropylene and polyethylene, PET has superior mechanical properties. PET exhibits good heat resistance, with a melting point of approximately 240°C, remaining stable in high-temperature environments. Furthermore, it possesses certain low-temperature resistance, able to withstand temperatures as low as -60°C. PET is resistant to corrosion from acids, alkalis, and salts, exhibiting good chemical stability. This allows it to maintain its performance even in environments requiring resistance to chemical attack. PET can be molded using various processing methods, including extrusion, injection molding, blow molding, and sheet stretching. These processing methods enable PET to be manufactured into products of various shapes and sizes to meet diverse application needs. PET does not deform when exposed to water, making it suitable for liquid containers. In addition, it has good electrical insulation properties, making it suitable for the manufacture of electronic equipment and electrified products.

[0093] In summary, the material selected for connector 32 is a relatively soft material, which facilitates the deformation of connector 32 after injection, thus aiding in the filling of the foam material. For example, when the foam layer thickness is greater than 80mm, it has no effect on connector 32. When the foam layer thickness is less than 80mm, the mounting backplate (i.e., the outer shell 1 part opposite to the side of the guide tube 31 away from the inner liner 2) will be deformed under pressure to adapt to its back space dimensions, thereby enabling connector 32 of one size to be applied to various models of refrigerator 100 bodies, increasing the versatility of connector 32.

[0094] According to some embodiments of the present invention, a spring piece (not shown in the figure) is provided at the injection port 4. The spring piece can move relative to the injection port 4 to open and close the injection port 4.

[0095] Therefore, the opening and closing of the injection port 4 can be achieved by the movement of the spring, such as flipping it. When the injection port 4 is open, the nozzle of the injection gun enters the refrigerator 100 through the injection port 4, corresponding to the connector 32 of the flow guiding assembly 3, and the foam material can be directly injected into the flow guiding tube 31 along the connector 32. That is to say, leakage of foam material during the injection process can be effectively prevented. After the injection is completed, the spring is flipped to close the injection port 4, preventing the foam material from leaking out of the injection port 4. In other words, it can be ensured that when the foam material is filled, the remaining foam material in the flow guiding tube 31 will not flow out along the injection port 4 when it flows back along the flow guiding tube 31, thus ensuring the normal function of the leak sealing without the addition of an external leak sealing structure or equipment.

[0096] A refrigerator 100 according to a second aspect embodiment of the present invention includes an outer shell 1, an inner liner 2, and a flow guiding assembly 3. A filling port 4 is formed on the side of the outer shell 1 near the bottom of the refrigerator 100. The inner liner 2 is disposed inside the outer shell 1. The flow guiding assembly 3 is disposed between the outer shell 1 and the inner liner 2, and includes a flow guiding tube 31, one end of which faces the filling port 4. The flow guiding tube 31 is a deformable component.

[0097] Specifically, combined Figure 1 The refrigerator 100 has a partition inside its outer shell 1, which divides the interior of the refrigerator 100 into two parts: the freezer section and the refrigerator section. The inner liner 2 of the refrigerator 100 is installed inside the outer shell 1, and the outer shell 1 can protect the inner liner 2 and limit its installation position.

[0098] In addition, combined Figure 1 and Figure 2 The refrigerator 100 is equipped with a flow guiding component 3. For example, in Figures 3 to 5In the example, the lower part of the guide tube 31 is on the same straight line as the injection port 4. That is, when the nozzle of the injection gun is inserted along the injection port 4, the foam material can flow into the refrigerator 100 along the guide tube 31 and fill it in various places along the guide tube 31, which can effectively prevent the overflow of the foam material when it flows in and facilitate the injection of the foam material.

[0099] Furthermore, the guide tube 31 is a deformable component. For example, the guide tube 31 can have a bag-like structure (not shown in the figure), and it can be bent and folded at will to facilitate installation in various complex locations. When the guide tube 31 is installed in refrigerators 100 of different specifications or designs, it can be deformed according to the actual situation without affecting the internal structure of the refrigerator 100, and without affecting the complexity of the internal structure. That is, in actual production, the guide tube 31 does not need to be designed according to the internal structure and shape of different refrigerators 100; it can adapt to the installation requirements of complex pipes and lines. In addition, it can be cut to meet different length requirements. In other words, the guide tube 31 in this application can meet the requirement of multiple uses, effectively improving its practicality. Furthermore, the flexible guide tube 31 can adapt to different shapes, and the outlet 312 can be adjusted in position and angle to suit refrigerators 100 of different models and structures.

[0100] According to the refrigerator 100 of this utility model, by adding a flow guiding component 3 between the outer shell 1 and the inner liner 2 of the refrigerator 100, the flow of foam material can be induced, effectively changing the flow direction of the foam material flowing in from the filling port 4, and reducing the flow resistance of the foam material. This prevents poor foam filling caused by problems such as the design structure of the refrigerator 100, production equipment, or production machine type, thus ensuring the production quality of the refrigerator 100. Furthermore, the flow guiding component 3 includes a flow guiding pipe 31. In addition, the flow guiding pipe 31 is a deformable part, which can be deformed according to actual conditions without affecting the internal structure of the refrigerator 100, and does not affect the complexity of the internal structure of the refrigerator 100. With this configuration, by adding the flow guiding component 3 to the refrigerator 100, the flow of foam material can be induced while controlling production costs and production difficulty, effectively improving the filling effect of the foam material and enhancing the production quality of the refrigerator 100.

[0101] Other configurations and operations of the refrigerator 100 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0102] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0103] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0104] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A refrigerator, comprising: a housing, a side of the housing close to a bottom of the refrigerator is formed with an injection port; an inner container, the inner container is arranged inside the housing; characterized in that the refrigerator further comprises: a flow guide assembly, the flow guide assembly is arranged between the housing and the inner container, the flow guide assembly comprises: a flow guide pipe, one end of the flow guide pipe is opposite to the injection port, the flow guide pipe is a polyethylene piece, a polyvinyl chloride piece or a polyurethane piece.

2. The refrigerator according to claim 1, characterized in that, The flow guide pipe has at least a first state when no injection and a second state after injection, the width of the flow guide pipe in the first state is greater than the width of the flow guide pipe in the second state.

3. The refrigerator according to claim 2, characterized in that, When the flow guide pipe is in the first state, the width of the flow guide pipe is W1, wherein the W1 satisfies: 41mm≤W1≤236mm; and / or, When the flow guide pipe is in the second state, the width of the flow guide pipe is W2, wherein the W2 satisfies: 26mm≤W2≤150mm.

4. The refrigerator according to claim 1, characterized in that, The flow guide pipe is connected with the inner container, a side surface of the flow guide pipe away from the inner container is formed with a plurality of overflow holes, the plurality of overflow holes are arranged along the extension direction of the flow guide pipe.

5. The refrigerator according to claim 4, characterized in that, The plurality of overflow holes constitute a plurality of overflow hole groups, each overflow hole group comprises a plurality of overflow holes arranged along the extension direction of the flow guide pipe, and the plurality of overflow hole groups are arranged in the width direction of the flow guide pipe.

6. The refrigerator according to claim 1, characterized in that, The flow guide assembly further comprises: a connecting piece, the connecting piece is connected with the one end of the flow guide pipe, and the connecting piece is opposite to the injection port.

7. The refrigerator according to claim 6, characterized in that A side of the connecting piece away from the flow guide pipe is spaced apart from the injection port, and the distance between the side of the connecting piece away from the flow guide pipe and the injection port is adapted to the distance of an injection gun extending into the housing through the injection port.

8. The refrigerator according to claim 6, characterized in that, The connecting piece is a rubber piece, a polyurethane piece, a thermoplastic elastomer piece or a polyethylene terephthalate piece.

9. The refrigerator according to any one of claims 1-8, characterized in that, The injection port is provided with a spring sheet, the spring sheet is movable relative to the injection port to open and close the injection port. 10.A refrigerator, comprising: a housing, a side of the housing close to a bottom of the refrigerator is formed with an injection port; an inner container, the inner container is arranged inside the housing; characterized in that the refrigerator further comprises: a flow guide assembly, the flow guide assembly is arranged between the housing and the inner container, the flow guide assembly comprises: a flow guide pipe, one end of the flow guide pipe is opposite to the injection port, the flow guide pipe is a deformable piece.

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