Refrigerator

Abstract

The utility model discloses a refrigerator. The refrigerator comprises a refrigerator body, an inner container and a foaming cavity defined between the refrigerator body and the inner container. A material injection opening is formed in the box body and is communicated with the foaming chamber; one end of the separation blade is close to the upper end of the injection port and is rotatably connected with the inner surface of the box body, the other end of the separation blade is a free end, and the separation blade seals the injection port without external force; an anti-overflow connector is arranged at the injection port and comprises a shell and an elastic piece; one side of the shell is in butt joint with the inner surface of the box body and covers the injection port and the blocking piece. One end of the elastic piece is connected with the lower end of the shell, the other end of the elastic piece is a free end and covers at least part of the injection port upwards, the elastic piece is elastic and can be bent into the containing cavity when the injection gun head is inserted into the containing cavity through the injection port, and the two sides of the elastic piece in the width direction are attached to the inner wall surfaces of the two sides of the shell all the time in the bending process; and the flow guide pipe is connected with the anti-overflow connector and extends into the foaming chamber. According to the scheme, the risk of refrigerator material overflowing in the production and manufacturing process can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, and in particular to a refrigerator. Background Art

[0002] Refrigerators are household appliances used to refrigerate or freeze food, and their insulation is a key component. During the refrigerator manufacturing process, a foam material is typically injected between the refrigerator's body and liner using an injection gun. After curing, it forms the insulation layer. This insulation layer effectively reduces heat conduction, minimizing heat exchange between the refrigerator's interior and the external environment, thereby maintaining a low temperature.

[0003] For certain cabinets where single-shot bottom-injection foaming is difficult, a flow tube is used. This method uses the flow tube to control the flow of the foam material and precisely fill specific areas. Unlike single-shot bottom-injection foaming, with a flow tube, the foam material, after being ejected from the nozzle, first flows through the flow tube and then enters the foam layer inside the cabinet through the outlet. However, as the foam material flows through the tube, resistance increases, and some foam material may remain in the tube. If there is no obstruction at the inlet, the foam material in the tube will expand toward the inlet, causing some foam to overflow. During the production process, if this occurs, it will affect production efficiency and damage the mold, so overflow is not allowed.

[0004] To address this issue, existing solutions utilize a sealing cap and injection tube. This cap is attached to the injection tube and coupled with a torsion spring. This allows the cap to be driven open when an external force is applied, and to return to its initial position when the force is removed. However, this solution is complex and expensive. Furthermore, the external force can last up to 15 seconds, during which time the cap is open, directly connecting the tube to the outside world and posing a risk of spillage. Utility Model Content

[0005] The present application provides a refrigerator that can reduce the occurrence of overflow during the filling process by providing an anti-overflow interface at the filling port and connecting a guide pipe. The refrigerator has a simple structure and is easy to operate.

[0006] The present application provides a refrigerator, comprising:

[0007] A box body, with a material injection port formed on the box body;

[0008] The inner tank is arranged inside the box body and defines a refrigeration compartment;

[0009] The foaming chamber is defined by the space between the box body and the inner container, and the foaming chamber is connected to the injection port;

[0010] A baffle is provided in the foaming chamber, one end of the baffle is close to the upper end of the injection port and is rotatably connected to the inner surface of the box body, and the other end of the baffle is a free end. The baffle closes the injection port when no external force is applied;

[0011] The anti-overflow interface is provided in the foaming chamber and includes:

[0012] The housing defines a receiving cavity therein, one side of the housing is open, and the width of the open side is greater than the width of the baffle, the open side is connected to the inner surface of the box body and covers the injection port and the baffle, and the length of the housing in the injection direction is greater than the insertion length of the injection gun tip through the injection port;

[0013] A spring piece is disposed in the accommodating cavity, one end of the spring piece being connected to the lower end of the open side, the other end of the spring piece being a free end and upwardly covering at least a portion of the injection port, the spring piece being elastic and being able to bend into the accommodating cavity when the injection gun head is inserted into the accommodating cavity through the injection port, and during the bending process, both sides of the spring piece in the width direction are always in contact with the inner wall surfaces of both sides of the shell;

[0014] The flow guide pipe is connected to the other side of the anti-overflow interface opposite to the open side and is communicated with the accommodating cavity, and the flow guide pipe extends to the interior of the foaming chamber.

[0015] In the above solution, an anti-overflow interface is installed inside the injection port. The foaming material in the injection gun head enters the guide tube through the accommodating cavity of the anti-overflow interface. The space inside the guide tube is not directly connected to the injection port, preventing the foaming material remaining in the guide tube from foaming and expanding directly toward the injection port and causing overflow. A spring installed inside the anti-overflow interface isolates the space below it from direct communication with the injection port, preventing the foaming material at its bottom from expanding directly toward the injection port, further preventing overflow during the foaming process. After foaming is completed, the baffle falls back and seals the injection port. Thus, overflow can be prevented both during and after the injection process.

[0016] In the above solution, an anti-overflow interface is installed inside the injection port. The foaming material in the injection gun head enters the guide tube through the accommodating cavity of the anti-overflow interface. The space inside the guide tube is not directly connected to the injection port, preventing the foaming material remaining in the guide tube from foaming and expanding directly toward the injection port and causing overflow. The spring plate installed inside the anti-overflow interface is always bent under the pressure of the injection gun head during the injection process, isolating the space below it from the injection port, blocking the foaming material from expanding directly toward the injection port from below, further preventing overflow during the foaming process. After foaming is completed, the baffle falls back and closes the injection port. Thus, overflow can be prevented both during the injection process and after the injection is completed.

[0017] In some embodiments of the present application, the length of the spring sheet must satisfy the following requirement: after the injection gun tip is inserted into the injection port, the straight length of the spring sheet in the injection direction in the bent state is less than the insertion length of the injection gun tip. This ensures that the free end of the spring sheet is pressed downward by the injection gun tip without blocking the end of the injection gun tip, thereby avoiding affecting the discharge of the foaming material.

[0018] In some embodiments of the present application, the length of the spring clip must further satisfy the requirement that, after the injection gun tip is removed from the injection port, the spring clip's return speed under the action of its elastic restoring force is slower than the return speed of the blocking plate, allowing the blocking plate to seal the injection port first. In this solution, by limiting the length of the spring clip, it is possible to prevent the spring clip's rebound from interfering with the blocking plate's return, ensuring that the blocking plate smoothly seals the injection port and improving the reliability of preventing spillage.

[0019] In some embodiments of the present application, a stopper is provided on each of the inner walls of the housing in the width direction. The stopper is provided to protrude from the surfaces of the inner walls of the housing. The stopper is located within the bending range of the spring and near the end of the bending range. This allows the spring to deform under the thrust of the injection gun head and pass over the stopper. After the injection gun head is withdrawn, the spring is restrained by the stopper and cannot be reset. In this solution, the stopper limits the rebound of the spring, preventing the spring from interfering with the return of the blocking piece, ensuring that the blocking piece can smoothly close the injection port and improving the reliability of preventing overflow.

[0020] In some embodiments of the present application, a flow port is defined at the lower portion of the inner wall on both sides of the housing in the width direction. The flow port includes two ends extending in the injection direction, wherein the first end is proximal to the injection port and the second end is distal to the injection port, and the second end of the flow port is closer to the flow guide tube than the free end of the spring in the bent state. The position and size of the flow port are designed based on the falling position of the small material, ensuring that the small material can flow out of the anti-overflow interface to the greatest extent possible after falling into the anti-overflow interface, thereby preventing foaming and expansion within the anti-overflow interface and overflowing the injection port.

[0021] In some embodiments of the present application, the opening shape of the flow port near the first end matches the side shape of the spring in the bent state. By designing the shape of the flow port, the flow port area is maximized while not affecting the spring's ability to isolate the space below it.

[0022] In some embodiments of the present application, the bottom of the accommodating chamber is provided with an inclined surface, which is arranged to slope downward from the interior of the accommodating chamber toward the flow openings on either side. In this solution, the inclined surface at the bottom can guide the foaming material that falls into the accommodating chamber toward the flow openings, increasing the flow rate of the foaming material toward the flow openings, allowing more foaming material to flow out of the anti-overflow interface faster and preventing accumulation of foaming material within the anti-overflow interface.

[0023] In some embodiments of the present application, the baffle is made of a rigid material. After the injection gun tip is pulled out of the injection port, the baffle rotates under the action of gravity and closes the injection port. In this solution, the baffle is made of a rigid material. After the injection gun tip is pulled out, the injection port can be closed more quickly, ensuring the effectiveness of preventing material overflow.

[0024] In some embodiments of the present application, the flow guide tube is made of a soft material, the anti-overflow interface includes a discharge port provided on the housing, the discharge port being located opposite the injection port and communicating with the accommodating cavity, the flow guide tube being fixedly connected to the discharge port, and the circumference of the flow guide tube being greater than the circumference of the discharge port. Using a soft material for the flow guide tube can reduce production costs and more conveniently connect the flow guide tube to the anti-overflow interface.

[0025] The present application also provides a refrigerator, comprising:

[0026] A box body, with a material injection port formed on the box body;

[0027] The inner tank is arranged inside the box body and defines a refrigeration compartment;

[0028] The foaming chamber is defined by the space between the box body and the inner container, and the foaming chamber is connected to the injection port;

[0029] A baffle is provided in the foaming chamber, one end of the baffle is close to the upper end of the injection port and is rotatably connected to the inner surface of the box body, and the other end of the baffle is a free end. The baffle closes the injection port when no external force is applied;

[0030] The anti-overflow interface is provided in the foaming chamber and includes:

[0031] The housing includes a feed side and a discharge side opposite to each other, the distance between the feed side and the discharge side being greater than the insertion length of the injection gun tip through the injection port, the feed side being docked with the inner surface of the housing and covering the injection port and the baffle, the anti-overflow interface being formed with a feed port on the feed side, the feed port not blocking the injection port in the feeding direction and not hindering the rotation of the baffle;

[0032] The accommodating cavity is defined by the interior space of the housing, and the volume of the accommodating cavity covers the rotational travel of the baffle relative to the injection port under the thrust of the injection gun head;

[0033] A spring piece is disposed in the accommodating cavity, one end of the spring piece is connected to the lower end of the feed port, the other end of the spring piece is a free end and upwardly covers at least a portion of the injection port, the spring piece is elastic and can bend into the accommodating cavity when the injection gun head is inserted into the accommodating cavity through the injection port, and the spring piece, in the bent state, blocks the communication between the space of the accommodating cavity below the spring piece and the injection port;

[0034] The flow guide pipe is connected to the discharge side of the anti-overflow interface and communicates with the accommodating cavity, and the flow guide pipe extends to the interior of the foaming chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1a Figure 1 is a perspective view of a refrigerator (part of the housing is removed) in an embodiment of the present application;

[0036] Figure 1bThis is a second perspective view of a refrigerator (part of the cabinet is removed) in an embodiment of the present application;

[0037] Figure 1c This is a side view of a refrigerator (part of the cabinet is removed) in an embodiment of the present application;

[0038] Figure 2a This is a three-dimensional diagram of the connection between the anti-overflow interface, the press bottom plate and the guide pipe in the embodiment of the present application;

[0039] Figure 2b This is a side view of the connection between the anti-overflow interface, the press bottom plate and the guide pipe in the embodiment of the present application;

[0040] Figure 2c This is a top view of the connection between the anti-overflow interface, the press bottom plate and the guide pipe in the embodiment of the present application;

[0041] Figure 3a for Figure 2c Cross-sectional view along AA direction;

[0042] Figure 3b for Figure 3a A partial enlarged view of the middle part B;

[0043] Figure 4a This is a schematic diagram of the connection between the anti-overflow interface and the press bottom plate in an embodiment of the present application, wherein the housing of the anti-overflow interface is transparent to clearly show the internal structure;

[0044] Figure 4b for Figure 4a A partial enlarged view of the middle part C;

[0045] Figure 5a This is a schematic diagram of the press bottom plate and its upper injection port viewed from the inside of the box in the embodiment of the present application;

[0046] Figure 5b This is a schematic diagram of the press bottom plate and its upper injection port viewed from the outside of the box body in the embodiment of the present application;

[0047] Figure 6 This is a structural diagram of an anti-overflow interface in one embodiment of the present application.

[0048] In the picture:

[0049] 100, box body; 101, injection port; 102, press bottom plate;

[0050] 200, liner;

[0051] 300, foaming chamber;

[0052] 400, baffle;

[0053] 500, anti-overflow interface; 510, housing; 511, open side; 512, feed side; 5121, feed port; 513, discharge side; 514, flow port; 520, spring; 530, accommodating cavity; 540, inclined surface;

[0054] 600, diversion pipe;

[0055] 700. Injection gun head. DETAILED DESCRIPTION

[0056] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0057] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments, unless there is a conflict.

[0058] In the description of the present invention, it should be understood that the terms "transverse," "longitudinal," "upper," "lower," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features referred to.

[0059] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0060] The present application provides a refrigerator, which includes a cabinet 100 and a door provided on the cabinet 100. One side of the cabinet 100 is open, and the door is rotatably connected to the open side 511 of the cabinet 100 to open or close the cabinet 100.

[0061] Inside the housing 100, an inner liner 200 is located. This inner liner 200 defines a refrigerated compartment for storing refrigerated items. Refrigerated food and other items can be placed and removed from the refrigerated compartment by opening the door. Two or more inner liners 200 can be provided as needed. For example, an upright refrigerator might have two inner liners 200 located at the top and bottom of the refrigerator, respectively, to distinguish between refrigeration and freezing functions or to classify stored items.

[0062] like Figure 1a-Figure 1c As shown, there is a space between the cabinet 100 and the inner container 200, and the space between the cabinet 100 and the inner container 200 defines a foaming chamber 300. During the manufacturing process of the refrigerator, foaming material is injected into the foaming chamber 300 so that the foaming material fills the foaming chamber 300. After the foaming material solidifies, it forms an insulation layer between the cabinet 100 and the inner container 200 of the refrigerator.

[0063] Insulation is crucial to a refrigerator's cooling and freezing properties. It reduces heat exchange between the inside and outside of the refrigerator, maintaining a low temperature of 200°C (132°F) inside the container, helping to prolong the shelf life of food. It also saves energy by maintaining a stable internal temperature and preventing the refrigerator's refrigeration system from operating too frequently.

[0064] The main factor affecting the insulation performance of the insulation layer is the filling effect of the foaming material during the foaming process. When the foaming material is evenly filled into the foaming chamber 300 of the refrigerator, the insulation effect is consistent throughout the entire insulation layer of the refrigerator, avoiding areas of weak insulation and achieving a more uniform temperature distribution within the refrigerator. However, uneven filling of the foaming material may lead to inconsistent insulation performance throughout the refrigerator, affecting the insulation effect within the refrigerator. Moreover, if the injection process of the foaming material into the foaming chamber 300 is not controlled, the foaming material may easily overflow, affecting the yield and aesthetics of the refrigerator.

[0065] See further Figure 1a-Figure 1cIn order to provide a channel for injecting foaming material into the foaming chamber 300, an injection port 101 is formed on the box body 100, and the injection port 101 is connected to the foaming chamber 300. The injection port 101 is usually opened in a position of the refrigerator box body 100 that is not easily visible so as not to affect the overall aesthetics of the refrigerator. For example, for an upright refrigerator, the press compartment is located at the bottom of the box body 100 for placing the compressor. The injection port 101 is opened on the press bottom plate 102. By inserting the injection gun tip 700 into the injection port 101, a portion of the injection gun tip 700 extends into the interior of the foaming chamber 300, thereby injecting the foaming material into the interior of the foaming chamber 300.

[0066] During the injection process, the back plate of the box body 100 is downward, and the box body 100 is placed on the ground as a whole, so that the press bottom plate 102 with the injection port 101 is placed vertically, so that the foaming material can enter the foaming chamber 300 in the horizontal direction. Figure 1c shown.

[0067] A baffle 400 is provided in the foaming chamber 300. One end of the baffle 400 is close to the upper end of the injection port 101 and is rotatably connected to the inner surface of the box body 100. The other end of the baffle 400 is a free end. When there is no external force, the baffle 400 can close the injection port 101, thereby cutting off the connection between the foaming chamber 300 and the outside world, preventing the foaming material from overflowing from the foaming chamber 300. Figure 5a and Figure 5b In this solution, the baffle 400 is arranged at the injection port 101 from top to bottom, and the upper end of the baffle 400 is rotatably connected to the inner surface of the box body 100.

[0068] During injection, the injection gun tip 700 is inserted through the injection port 101, and the thrust of the gun tip lifts the baffle 400 to allow injection. During the injection process, the foaming chamber 300 is connected to the outside world through the open injection port 101, which may cause material overflow. During the refrigerator manufacturing process, if material overflow occurs, it will affect on-site production efficiency and damage the mold. Therefore, material overflow is not allowed.

[0069] To avoid this problem, the refrigerator provided in the embodiment of the present application further includes an anti-overflow interface 500, which is provided in the foaming chamber 300. Figure 2a-2c 、 Figure 3a and Figure 3b as well as Figure 4a and Figure 4b As shown, the anti-overflow interface 500 includes a housing 510 and a spring 520 disposed in the housing 510 .

[0070] The first embodiment of the anti-overflow interface 500 is as follows:

[0071] The housing 510 of the anti-overflow interface 500 defines a housing cavity 530. One side of the housing 510 is open, and the width of the open side 511 is greater than the width of the baffle 400. The open side 511 abuts against the inner surface of the housing 100 and covers the injection port 101 and the baffle 400, thereby enclosing both the injection port 101 and the baffle 400 within the housing cavity 530 of the housing 510, forming a semi-enclosed chamber. The length of the housing 510 in the injection direction is greater than the insertion length of the injection gun tip 700 through the injection port 101. During the injection process, the insertion of the injection gun tip 700 into the injection port 101 is not blocked or affected by the housing 510.

[0072] The spring clip 520 is disposed within the accommodating cavity 530 of the housing 510. One end of the spring clip 520 is connected to the lower end of the open side 511, while the other end of the spring clip 520 is free and upwardly covers at least a portion of the injection port 101. In other words, the spring clip 520 is arranged from bottom to top, with the lower end of the spring clip 520 fixedly connected to the housing 510 of the anti-overflow interface 500. The spring clip 520 is elastic and can bend toward the accommodating cavity 530 when the injection gun tip 700 is inserted through the injection port 101. During this bending process, both sides of the spring clip 520 in the width direction always adhere to the inner wall surfaces of the housing 510 of the anti-overflow interface 500.

[0073] The other side of the anti-overflow interface 500 opposite to the open side 511 is connected to the accommodating cavity 530 and is connected to a guide tube 600. The guide tube 600 extends to the interior of the foaming chamber 300, thereby guiding the foaming material to a deeper position in the foaming chamber 300, so that the foaming material can fill the foaming chamber 300 more evenly and fully.

[0074] In the solution provided by the above embodiment, an anti-overflow interface 500 is installed inside the injection port 101. The anti-overflow interface 500 covers the injection port 101 and the baffle 400 inside. The foaming material in the injection gun head 700 enters the guide tube 600 through the accommodating cavity 530 of the anti-overflow interface 500. The space inside the guide tube 600 is not directly connected to the injection port 101, but is connected to the anti-overflow interface 500. This prevents the foaming material remaining in the guide tube 600 from foaming and expanding directly toward the injection port 101 and causing overflow. The spring piece 520 installed inside the anti-overflow interface 500 isolates the space below it from direct communication with the injection port. Because the foaming material first expands from the bottom, the spring piece 520 isolates the bottom space inside the anti-overflow interface 500, preventing the foaming material at the bottom from expanding directly toward the injection port 101, further preventing overflow during the foaming process. After the foaming is completed, the injection gun head 700 is pulled out from the injection port 101, and the blocking piece 400 falls back under its own gravity due to the disappearance of the external force and closes the injection port 101. In this way, the occurrence of overflow can be avoided during and after the injection process.

[0075] The second embodiment of the anti-overflow interface 500 is as follows:

[0076] The housing 510 of the anti-overflow interface 500 includes an opposing feed side 512 and a discharge side 513. The feed side 512 abuts against the inner surface of the housing 100 and covers the injection port 101 and the baffle 400, thereby enclosing the injection port 101 and the baffle 400 within the housing 510. The distance between the feed side 512 and the discharge side 513 is greater than the insertion length of the injection gun tip 700 through the injection port 101. Therefore, during the injection process, the insertion of the injection gun tip 700 through the injection port 101 will not be blocked or affected by the housing 510.

[0077] The anti-overflow interface 500 has a feed port 5121 formed on the feed side 512. The feed port 5121 does not block the filling port 101 in the feeding direction and does not hinder the rotation of the baffle 400 to open or close the filling port 101. For example, in some embodiments, the size of the feed port 5121 is larger than that of the filling port 101, and the opening above the feed port 5121 needs to be able to accommodate the baffle 400.

[0078] The interior space of the housing 510 defines a chamber 530 . The volume of the chamber 530 must cover the rotational travel of the baffle 400 relative to the injection port 101 , caused by the thrust of the injection gun head 700 . The foaming material injected by the injection gun head 700 must first pass through the chamber 530 .

[0079] The spring piece 520 is arranged in the accommodating cavity 530, one end of the spring piece 520 is connected to the lower end of the feed port 5121, and the other end of the spring piece 520 is a free end and covers at least part of the injection port 101 upward. The spring piece 520 is elastic and can be bent into the accommodating cavity 530 when the injection gun head 700 is inserted into the accommodating cavity 530 through the injection port 101. In the bent state, the spring piece 520 separates the space below the spring piece 520 in the accommodating cavity 530 from the injection port 101.

[0080] The discharge side 513 of the anti-overflow interface 500 is connected to the accommodating chamber 530 and is connected to the guide tube 600. The guide tube 600 extends to the interior of the foaming chamber 300, thereby guiding the foaming material to a deeper position in the foaming chamber 300, so that the foaming material can fill the foaming chamber 300 more evenly and fully.

[0081] In the solution provided in the above embodiment, an anti-overflow interface 500 is installed inside the injection port 101, with the two sides of the anti-overflow interface 500 being respectively a feed side 512 and a discharge side 513. The foaming material in the injection gun head 700 is first injected from the injection port 101 from the feed side 512 of the anti-overflow interface 500, and then flows into the guide tube 600 through the discharge side 513 of the anti-overflow interface 500. This ensures that the space inside the guide tube 600 is not directly connected to the injection port 101, but is connected to the anti-overflow interface 500. This prevents the residual foaming material in the guide tube 600 from directly foaming and expanding toward the injection port 101 and causing overflow. The spring piece 520 installed inside the anti-overflow interface 500 is always in a bent state under the pressure of the injection gun head 700 during the injection process, and isolates the space below it from the injection port 101. Because the foaming material begins to expand from the bottom, the bent spring 520 blocks the foaming material from expanding directly toward the injection port 101 from below, further preventing overflow during the foaming process. After foaming is completed, the injection gun head 700 is removed from the injection port 101, and the blocking plate 400, freed from the external force, falls back under its own gravity, sealing the injection port 101. This prevents overflow both during and after the injection process.

[0082] It can be understood that in the first and second embodiments of the above-mentioned anti-overflow interface 500, the function of the spring piece 520 is only to isolate the direct connection between the bottom space and the injection port 101 by utilizing its bent state during the injection process. The height of the spring piece 520 only needs to achieve this purpose, and it is not necessary to completely cover the injection port 101. However, the spring piece 520 needs to cover at least part of the injection port 101, so that the spring piece 520 can be pushed to bend and deform during the insertion process of the injection gun head 700. Figure 5b In addition, in some embodiments, in the initial state before injection, the spring piece 520 is located between the injection port 101 and the baffle 400, so that after the injection gun head 700 is inserted, it is convenient for the gun head to directly push the spring piece 520 open and deform. Figure 5a .

[0083] Further improvements in other aspects are further described below, but it can be understood that the technical solutions in the embodiments described below can be combined with the first embodiment and the second embodiment of the above-mentioned anti-overflow interface 500 at the same time.

[0084] In some embodiments, as Figure 2a-2cAs shown, the housing 510 of the anti-overflow interface 500 is a cube, for example, a rectangular parallelepiped or a cube, which simplifies the shape of the anti-overflow interface 500 and facilitates installation of the anti-overflow interface 500. The connection and fixing method of the housing 510 of the anti-overflow interface 500 to the inner surface of the box body 100 and the flow guide tube 600 is not limited to gluing, as long as the anti-overflow interface 500 and the box body 100, as well as the anti-overflow interface 500 and the flow guide tube 600, can be firmly connected and not separated during the filling process.

[0085] It is understandable that the larger the housing 510 of the anti-overflow interface 500 and the larger the accommodating cavity 530 inside the anti-overflow interface 500, the less likely it is to cause overflow. However, the size of the housing 510 of the anti-overflow interface 500 also needs to consider the compatibility with the box 100 and the flow guide tube 600. Therefore, there are restrictions on the width and height of the housing 510 of the anti-overflow interface 500. The length of the housing 510 in the longitudinal direction (i.e., the injection direction) can be as long as possible, but at the same time, the actual structure of the box 100 must be considered to avoid interference. The minimum length of the housing 510 must be greater than the insertion length of the injection gun tip 700. For example, in some embodiments, the housing 510 of the anti-overflow interface 500 is a rectangular parallelepiped, and the dimensions of the housing 510 are 80 mm (length) × 60 mm (width) × 70 mm (height).

[0086] In some embodiments, the flow guide tube 600 is made of a soft material, such as an inexpensive PE film. Once the length and diameter of the soft material flow guide tube 600 are determined, the dimensions of the anti-overflow interface 500 are limited. The anti-overflow interface 500 includes a discharge port on the housing 510. The discharge port is located on the opposite side of the housing 510 from the injection port 101 and communicates with the accommodating chamber 530. The flow guide tube 600 is fixedly connected to the discharge port, and the circumference of the flow guide tube 600 is greater than the circumference of the discharge port. For example, if the flow guide tube 600 has a diameter of 85 mm and a circumference of 267 mm, the circumference of the discharge port on the housing 510 must be less than 267 mm to allow the flow guide tube 600 to be directly connected to the outer periphery of the discharge port. Furthermore, if necessary, necessary fastening and sealing measures can be implemented to hermetically connect the flow guide tube 600 to the discharge port. However, it is understood that the flow guide tube 600 can also be made of materials other than soft materials.

[0087] In some embodiments, the baffle 400 is made of a rigid material, such as a hard thin sheet. When the injection gun head 700 is inserted through the injection port 101 on the housing 100, the baffle 400 is lifted, thereby opening the injection port 101. When the injection gun head 700 is removed from the injection port 101, the baffle 400 rotates under the action of gravity and closes the injection port 101.

[0088] One end of the spring piece 520 is fixed to the injection port 101 by, but not limited to, gluing, etc., as long as a stable connection can be achieved to prevent the injection gun head 700 from falling off when inserted. The spring piece 520 can be made of any elastic material that can achieve the above function.

[0089] In some embodiments, the length of the spring piece 520 must satisfy the following requirements: after the injection gun head 700 is inserted into the injection port 101, the straight length of the spring piece 520 in the injection direction in the bent state is less than the insertion length of the injection gun head 700, such as Figure 3b This ensures that the free end of the spring 520 is pressed downward by the injection gun head 700 without blocking the end of the injection gun head 700, thereby avoiding affecting the ejection of the foaming material.

[0090] In some embodiments, after injection is complete and the injection gun head 700 is removed, the spring clip 520 can return to its initial state due to its own elastic restoring force. However, in this embodiment, it is necessary to prevent the rebound movement of the spring clip 520 from interfering with the return movement of the blocking piece 400. To avoid interference between the two, the first method is to increase the length of the spring clip 520, thereby increasing the rebound time of the spring clip 520; the second method is to reduce the length of the blocking piece 400, thereby reducing the return range of the blocking piece 400.

[0091] In some embodiments, the length of the spring piece 520 needs to further satisfy the following requirement: after the injection gun tip 700 is pulled out of the injection port 101, the return speed of the spring piece 520 under the action of the elastic restoring force is slower than the return speed of the blocking piece 400, so that the blocking piece 400 first closes the injection port 101. In this embodiment, when the injection gun tip 700 is pulled out, the blocking piece 400 first falls back and closes the injection port 101, and then the spring piece 520 covers the outside of the blocking piece 400, avoiding interference between the two and further improving the sealing effect of the blocking piece 400 on the injection port 101.

[0092] In other embodiments, to prevent the rebound of the spring piece 520 from interfering with the falling motion of the baffle 400, a structure is provided on the anti-overflow interface 500 to limit the rebound of the spring piece 520. Specifically, a stopper (not shown) is provided on each of the inner walls of the housing 510 in the width direction. The stopper protrudes from the inner wall surfaces of the housing 510 on both sides. The stopper is located along the bending stroke of the spring piece 520 and near the end of the bending stroke. This allows the spring piece 520 to deform and pass over the stopper under the thrust of the injection gun head 700. After the injection gun head 700 is removed, the spring piece 520 is restrained by the stopper and cannot be reset.

[0093] In the above scheme, considering that the function of the spring piece 520 is mainly to block the foaming material during the injection process, and when the injection is completed, it is not important whether the spring piece 520 rebounds, but considering that the rebound of the spring piece 520 may interfere with the falling back of the baffle 400, a limiting portion is provided to limit the rebound of the spring piece 520. When the injection gun head 700 is pulled out, the baffle 400 falls back normally, and the spring piece 520 is restricted at the limiting portion and always remains in a bent state, thereby avoiding interference with the falling movement of the baffle 400 and improving the reliability of preventing overflow.

[0094] After the injection is completed, the foaming machine will push out the remaining foam material in the barrel through the injection gun head 700. The remaining foam material is about 50g, which is called small material. The small material falls almost vertically from the muzzle into the accommodating cavity 530 of the anti-overflow interface 500. The small material foams and expands in the accommodating cavity 530, which is also prone to overflow.

[0095] To solve the above problem, in some embodiments, the housing 510 is provided with flow ports 514 at the lower portion of the inner walls on both sides in the width direction. Figure 2a and Figure 2b as well as Figure 3b As shown, the flow port 514 includes two ends extending along the injection direction, wherein the first end is close to the injection port 101 and the second end is away from the injection port 101. The second end of the flow port 514 is closer to the guide tube 600 than the free end of the spring 520 in the bent state. The flow ports 514 set on both sides below the anti-overflow interface 500 provide a channel for small materials to flow out of the anti-overflow interface 500. Considering that the newly-extruded foamed material has strong fluidity, it will gradually solidify and its fluidity will decrease over time. In this embodiment, the position and size of the flow port 514 are designed according to the falling position of the small material, ensuring that the small material can flow out of the anti-overflow interface 500 from the flow port 514 to the greatest extent after falling into the anti-overflow interface 500, thereby preventing the small material from foaming and expanding inside the anti-overflow interface 500 and overflowing the injection port 101.

[0096] The position and size of the flow port 514 need to be designed according to actual conditions. For example, if the insertion depth of the gun tip is 45mm, the landing point of the small material ejected by the gun tip will be slightly farther from the gun tip outlet, approximately 60mm laterally from the injection port 101. The center of the flow port 514 can be designed to be lengthened in the injection direction based on this. The height of the flow port 514 can be increased as much as possible, but it cannot exceed the spring 520. Moreover, when the height of the flow port 514 is increased to a certain extent, the effect is no longer obvious, because the small material is only about 50g and is ejected within 15 seconds before the gun tip is pulled out. The maximum height of the small material does not exceed 30mm. Therefore, optionally, the length of the flow port 514 is greater than 50mm and the height is less than or equal to 30mm. No accumulation of foaming material will occur near the flow port 514, because after the injection is completed, the pressure inside and outside the flow port 514 is close to atmospheric pressure, and when the area of ​​the flow port 514 is sufficient, the small material will flow out of the flow port 514 smoothly.

[0097] In order to maximize the area of ​​the flow port 514, the shape of the flow port 514 can be designed with reference to the shape of the spring 520 in the bent state. In some embodiments, the opening shape of the flow port 514 near the first end is consistent with the side shape of the spring 520 in the bent state. Figure 4b The remaining portion of the flow port 514 is not particularly limited, so that the area of ​​the flow port 514 can be increased as much as possible without affecting the partitioning effect of the spring 520 on the space below.

[0098] In some embodiments, as Figure 4b As shown, the bottom of the accommodating cavity 530 is provided with an inclined surface 540, and the inclined surface 540 is inclined from the inside of the accommodating cavity 530 to the flow ports 514 on both sides at a lower height. In this solution, the inclined surface 540 at the bottom can guide the foaming material falling into the accommodating cavity 530 to the flow ports 514, thereby increasing the flow speed of the foaming material flowing to the flow ports 514, so that more foaming material flows out of the anti-overflow interface 500 and faster, thereby avoiding the accumulation of foaming material inside the anti-overflow interface 500. It is understandable that the inclination of the inclined surface 540 should not be too large. If the inclination is too large, it will occupy too much of the bottom space of the accommodating cavity 530, increasing the risk of overflow. The appropriate inclination of the inclined surface 540 can be obtained by those skilled in the art based on common sense or a limited number of experiments.

[0099] During the manufacturing process of the refrigerator, the anti-overflow interface 500 provided in this application is used to install the anti-overflow interface 500 at the injection port 101 in the foaming chamber 300, and connect the guide pipe 600 to extend deeper into the foaming chamber 300.

[0100] Before foaming begins, the injection gun tip 700 is first inserted into the injection port 101 of the press bottom plate 102 to bend the spring 520 and lift the baffle 400. The injection port 101 is opened and the injection gun tip 700 is inserted about 45 mm.

[0101] After foaming begins, the foam material is ejected from the injection gun tip 700 at a flow rate of 1500-1700 g / s. Most of the foam material falls into the guide tube 600. The injection process lasts for 4-6 seconds, and the foam material continuously flows out of the outlet of the guide tube 600. Some foam material also remains in the guide tube 600. During the injection process, the spring 520 remains bent below the injection gun tip 700, preventing the foam material below from expanding and extending to the injection port 101. Because the guide tube 600 is connected to the anti-overflow interface 500 rather than directly to the injection port 101, even if there is foam material remaining in the guide tube 600, it will not directly expand to the injection port 101 and can be blocked by the spring 520.

[0102] After the injection is completed, based on the internal level setting of the foaming machine, the foaming machine will push out the residual foaming material inside the barrel from the injection gun head 700, and the small material will fall from the muzzle almost vertically into the accommodating cavity 530 of the anti-overflow interface 500. The small material falling into the anti-overflow interface 500 is quickly guided to the flow port 514 by the inclined surface 540 at the bottom of the accommodating cavity 530, and flows out of the anti-overflow interface 500 from the flow port 514, avoiding the accumulation of foaming material in the anti-overflow interface 500.

[0103] Subsequently, the injection gun head 700 is pulled out from the injection port 101 , and the blocking piece 400 falls back by its own weight and closes the injection port 101 to prevent the foaming material in the foaming chamber 300 from overflowing.

[0104] The refrigerator provided in the embodiment of the present application can prevent overflow during the foaming process and after the foaming is completed by cooperating with the baffle 400 and the anti-overflow interface 500, thereby improving production efficiency and product quality.

Claims

1. A refrigerator, characterized in that: include: a box body, on which a material injection port is formed; An inner container is provided inside the box body and defines a refrigeration compartment; a foaming chamber defined by the space between the box body and the inner container, the foaming chamber being in communication with the injection port; a baffle disposed in the foaming chamber, wherein one end of the baffle is close to the upper end of the injection port and is rotatably connected to the inner surface of the box body, and the other end of the baffle is a free end, and the baffle closes the injection port when no external force is applied; An anti-overflow interface is provided in the foaming chamber, and the anti-overflow interface includes: a housing defining an accommodating cavity therein, one side of the housing being open, the width of the open side being greater than the width of the baffle, the open side being in contact with the inner surface of the box body and covering the injection port and the baffle, the length of the housing in the injection direction being greater than the insertion length of the injection gun tip through the injection port; a spring sheet disposed in the accommodating cavity, one end of the spring sheet being connected to the lower end of the open side, the other end of the spring sheet being a free end and upwardly covering at least a portion of the injection port, the spring sheet being elastic and being able to bend into the accommodating cavity when the injection gun head is inserted into the accommodating cavity through the injection port, and during the bending process, both sides of the spring sheet in the width direction always being in contact with the inner wall surfaces of both sides of the shell; A flow guide pipe is connected to the other side of the anti-overflow interface opposite to the open side and is communicated with the accommodating cavity, and the flow guide pipe extends to the interior of the foaming chamber.

2. The refrigerator according to claim 1, wherein: The length of the spring piece must satisfy the following requirement: after the injection gun head is inserted into the injection port, the straight length of the spring piece in the injection direction in the bent state is less than the insertion length of the injection gun head.

3. The refrigerator according to claim 2, characterized in that The length of the spring piece needs to further satisfy the following requirement: after the injection gun head is pulled out of the injection port, the reset speed of the spring piece under the action of the elastic restoring force is less than the reset speed of the baffle, so that the baffle closes the injection port first.

4. The refrigerator according to claim 1, wherein: The shell is provided with a limiting portion on both side inner walls in the width direction, and the limiting portion is respectively protruded relative to the surface of the two side inner walls of the shell. The limiting portion is located on the bending stroke of the spring sheet and close to the end of the bending stroke, so that the spring sheet is deformed and passes over the limiting portion under the thrust of the injection gun head. After the injection gun head is pulled out, the spring sheet is restricted by the limiting portion and cannot be reset.

5. The refrigerator according to claim 1, wherein The lower part of the inner wall on both sides of the shell in the width direction is respectively provided with a flow port, and the flow port includes two ends extending along the injection direction, wherein the first end is close to the injection port and the second end is away from the injection port, and the second end of the flow port is closer to the guide tube than the free end of the spring in the bent state.

6. The refrigerator according to claim 5, characterized in that The opening shape of the flow port near the first end is consistent with the side shape of the spring in a bent state.

7. The refrigerator according to claim 5, characterized in that The bottom of the accommodating cavity is provided with an inclined surface, and the inclined surface is inclined from the inside of the accommodating cavity to the flow ports on both sides with a decreasing height.

8. The refrigerator according to claim 1, wherein The blocking piece is made of a rigid material. After the injection gun head is pulled out of the injection port, the blocking piece rotates under the action of gravity and closes the injection port.

9. The refrigerator according to claim 1, wherein The guide tube is made of soft material, the anti-overflow interface includes a discharge port provided on the outer shell, the discharge port is located on the opposite side of the injection port, the discharge port is connected to the accommodating cavity, the guide tube is fixedly connected to the discharge port, and the circumference of the guide tube is greater than the circumference of the discharge port.

10. A refrigerator, characterized in that: include: a box body, on which a material injection port is formed; An inner container is provided inside the box body and defines a refrigeration compartment; a foaming chamber defined by the space between the box body and the inner container, the foaming chamber being in communication with the injection port; a baffle disposed in the foaming chamber, wherein one end of the baffle is close to the upper end of the injection port and is rotatably connected to the inner surface of the box body, and the other end of the baffle is a free end, and the baffle closes the injection port when no external force is applied; An anti-overflow interface is provided in the foaming chamber, and the anti-overflow interface includes: The housing includes a feed side and a discharge side opposite to each other, the distance between the feed side and the discharge side being greater than the insertion length of the injection gun tip through the injection port, the feed side docking with the inner surface of the housing and covering the injection port and the baffle, the anti-overflow interface forming a feed port on the feed side, the feed port not blocking the injection port in the feeding direction and not hindering the rotation of the baffle; an accommodating cavity defined by the interior space of the housing, the volume of the accommodating cavity covering the rotational stroke of the baffle relative to the injection port opened by the thrust of the injection gun head; a spring sheet disposed in the accommodating cavity, one end of the spring sheet being connected to the lower end of the feed port, the other end of the spring sheet being a free end and upwardly covering at least a portion of the injection port, the spring sheet being elastic and being able to bend into the accommodating cavity when the injection gun head is inserted into the accommodating cavity through the injection port, and the spring sheet, in the bent state, blocking the communication between the space of the accommodating cavity below the spring sheet and the injection port; A flow guide pipe is connected to the discharge side of the anti-overflow interface and communicated with the accommodating cavity, and the flow guide pipe extends to the interior of the foaming chamber.

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