Refrigerator

Abstract

The utility model relates to refrigeration equipment technical field, the utility model provides a refrigerator, include: casing, inner bag, frost plate, refrigeration subassembly and defrosting subassembly, the inner bag is located in the casing, and the inner bag includes bottom wall and a plurality of side walls, the inner surface of at least one side wall is equipped with frost plate, and the inner surface of frost plate is spaced and is equipped with a plurality of flow guide grooves along the first direction, and the flow guide groove extends along the second direction, and the inner surface bottom of frost plate is equipped with water collecting structure, and the flow guide groove is linked together with water collecting structure, and water collecting structure is equipped with drain, refrigeration subassembly includes compressor and coil evaporator, and the compressor is connected with coil evaporator, and the compressor is located in the casing, and coil evaporator is located in the outer surface of the side wall with frost plate, defrosting subassembly is located in the casing, and defrosting subassembly is used for heating frost plate to defrost frost plate.

Description

Technical Field

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

[0002] A freezer is a device used for storing food or other items at low temperatures, typically in commercial and residential environments. Its refrigeration system maintains a low internal temperature, making it suitable for preserving perishable items such as ice cream, frozen meat, and vegetables.

[0003] During prolonged use, frost will form on the inner wall of a freezer. To address this issue, existing freezers typically have an automatic defrosting function. However, during automatic defrosting, existing freezers often allow frost to remain inside the freezer and re-condense, resulting in poor defrosting effectiveness and impacting the freezer's usability. Utility Model Content

[0004] This utility model provides a freezer to solve the defect of existing freezers where frost water tends to remain inside the freezer and re-condense during automatic defrosting, resulting in poor defrosting effect.

[0005] This utility model provides a freezer, including: a shell, an inner liner, a defrosting plate, a refrigeration component, and a defrosting component.

[0006] The inner liner is disposed within the housing, and the inner liner includes a bottom wall and multiple side walls, which together form a storage space with a top opening. At least one of the side walls has an inner surface provided with a frost-collecting plate. The inner surface of the frost-collecting plate has multiple guide grooves spaced apart along a first direction, and the guide grooves extend along a second direction. A water collection structure is provided at the bottom of the inner surface of the frost-collecting plate, and the guide grooves communicate with the water collection structure, which has a drain outlet. The refrigeration assembly includes a compressor and a coil evaporator. The compressor is connected to the coil evaporator and is disposed within the housing. The coil evaporator is disposed on the outer surface of the side wall where the frost-collecting plate is located. A defrosting assembly is disposed within the housing and is used to heat the frost-collecting plate to defrost it.

[0007] According to the freezer provided by this utility model, the height of the water collection structure gradually decreases from both sides to the middle along the first direction, so as to collect the melted water at the lowest point of the water collection structure.

[0008] According to the freezer provided by this utility model, the inner surface of the defrosting plate is provided with a wave-shaped structure, the wave-shaped structure includes wave crests and wave troughs that are alternately arranged along a first direction, the wave crests and the wave troughs both extend along a second direction, and the wave troughs form the flow guide groove.

[0009] According to the freezer provided by this utility model, the defrosting plate is detachably connected to the inner liner; or, the defrosting plate is integrally formed with the inner liner.

[0010] According to the freezer provided by this utility model, the inner surface of a single side wall is provided with the frost-collecting plate, and the frost-collecting plate is provided on the inner surface of the side wall of the inner liner located at the back.

[0011] The inner liner is provided with the frost plate on the inner surface of the side wall at the back.

[0012] According to the refrigerator provided by this utility model, the defrosting component includes a coiled heating wire, which is disposed on the outer surface of the side wall on which the frost plate is provided, and the outline of the coiled heating wire is adapted to the shape of the frost plate.

[0013] According to the freezer provided by this utility model, the winding direction of the coiled heating wire and the coiled evaporator are intersecting; or, the coiled heating wire includes a spirally coiled main body, and the spiral center of the main body is located in the central region corresponding to the side wall.

[0014] According to the freezer provided by this utility model, the defrosting assembly includes a four-way reversing valve, and the refrigeration assembly also includes a condenser; the outlet end of the compressor is connected to the first interface of the four-way reversing valve, the second interface of the four-way reversing valve is connected to the inlet of the condenser, the outlet of the condenser is connected to the third interface of the four-way reversing valve, and the fourth interface of the four-way reversing valve is connected to the coil evaporator.

[0015] According to the freezer provided by this utility model, the refrigeration component further includes a fan, which is disposed on the defrosting plate. The fan is used to blow air in the storage space to the area where the coil evaporator is located corresponding to the defrosting plate. The defrosting plate is provided with a conductive structure, which is used to connect the area where the coil evaporator is located with the storage space.

[0016] According to the freezer provided by this utility model, the refrigeration component further includes a fan mounting bracket, the fan mounting bracket is disposed on the defrosting plate, and the fan is disposed on the fan mounting bracket; the outer periphery of the fan mounting bracket is provided with fan heating wire, and / or, the back of the fan mounting bracket is provided with fan heating wire.

[0017] The freezer provided by this utility model, by setting up a frost-collecting plate and placing the coil evaporator of the refrigeration component on the outer surface of the inner liner sidewall corresponding to the frost-collecting plate, can ensure that the temperature of the sidewall with the coil evaporator is lower than that of the other sidewalls without coil evaporators during refrigeration. This allows frost to preferentially condense on the frost-collecting plate. Once the frost on the frost-collecting plate reaches a certain level, the refrigeration component can be turned off, and the defrosting component can be used to heat the frost-collecting plate for defrosting. During defrosting, the frost water can flow along the guide channel and collect in the water collection structure, and finally be discharged to a specific location through the drain outlet. This effectively prevents frost water from remaining in the freezer and re-condensing, significantly improving the defrosting effect.

[0018] 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

[0019] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is one of the schematic diagrams of the freezer provided in this embodiment of the utility model.

[0021] Figure 2 This is the second schematic diagram of the freezer provided in this embodiment of the utility model.

[0022] Figure 3 This is the second schematic diagram of the freezer provided in this embodiment of the utility model.

[0023] Figure 4 This is a schematic diagram of the installation of the refrigeration components in the freezer provided in this embodiment of the utility model.

[0024] Figure 5 This is one of the schematic diagrams of the defrosting plate in the freezer provided in this embodiment of the utility model.

[0025] Figure 6 This is the second schematic diagram of the defrosting plate in the freezer provided in this embodiment of the utility model.

[0026] Figure 7 This is one of the schematic diagrams of the coiled heating wire in the freezer provided in this embodiment of the utility model.

[0027] Figure 8 This is the second schematic diagram of the coiled heating wire in the freezer provided in this embodiment of the utility model.

[0028] Figure 9 This is a schematic diagram illustrating the principle of defrosting using compressor exhaust in a freezer provided in this embodiment of the utility model.

[0029] Figure 10 This is one of the installation diagrams of the fan heating wire in the freezer provided in this utility model embodiment.

[0030] Figure 11 This is the second schematic diagram of the installation of the fan heating wire in the freezer provided in this embodiment of the utility model.

[0031] Figure label:

[0032] 100. Shell; 110. Compressor compartment; 120. Collection tank; 200. Inner liner; 210. Bottom wall; 220. Side wall; 300. Defrosting plate; 310. Guide channel; 320. Water collection structure; 330. Drain outlet; 340. Corrugated structure; 350. Conductive structure; 400. Refrigeration assembly; 410. Compressor; 420. Condenser; 430. Coil evaporator; 440. Fan; 450. Fan mounting bracket; 460. Fan heating wire; 500. Defrosting assembly; 510. Coiled heating wire; 511. Main body; 520. Four-way reversing valve; 521. First valve; 522. Second valve; 523. Third valve. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0036] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "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. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0038] The following is combined with Figures 1 to 11 This utility model describes the freezer provided.

[0039] See Figures 1 to 4 As shown, this utility model provides a freezer, including: a shell 100, an inner liner 200, a defrosting plate 300, a refrigeration component 400, and a defrosting component 500.

[0040] The inner liner 200 is disposed within the shell 100. The inner liner 200 includes a bottom wall 210 and multiple side walls 220, which together form a storage space with a top opening. At least one side wall 220 has an inner surface provided with a frost-collecting plate 300. The inner surface of the frost-collecting plate 300 has multiple guide grooves 310 spaced apart along a first direction, which extend along a second direction. The bottom of the inner surface of the frost-collecting plate 300 has a water-collecting structure 320, which connects the guide grooves 310 with the water-collecting structure. The structure 320 is connected, and the water collection structure 320 is provided with a drain outlet 330; the refrigeration component 400 includes a compressor 410 and a coil evaporator 430, the compressor 410 is connected to the coil evaporator 430, the compressor 410 is located inside the housing 100, and the coil evaporator 430 is located on the outer surface of the side wall 220 where the frost plate 300 is located; the defrosting component 500 is located inside the housing 100, and the defrosting component 500 is used to heat the frost plate 300 to defrost the frost plate 300.

[0041] It should be noted that the terms "first direction" and "second direction" in the embodiments of this utility model can be found in [reference needed]. Figure 2 The arrows shown indicate the directions. The first direction can be understood as the length of the frost-resistant plate 300, and the second direction can be understood as vertical.

[0042] The freezer provided by this utility model, by setting up a frost-collecting plate 300 and placing the coil evaporator 430 of the refrigeration component 400 on the outer surface of the side wall 220 of the inner liner 200 corresponding to the frost-collecting plate 300, can make the temperature of the side wall 220 with the coil evaporator 430 lower than that of the other side walls 220 without the coil evaporator 430 during refrigeration. This allows frost to preferentially condense on the frost-collecting plate 300. After the amount of frost on the frost-collecting plate 300 reaches a certain level, the refrigeration component 400 can be turned off, and the defrosting component 500 can be used to heat the frost-collecting plate 300 for defrosting. During defrosting, the frost water can flow along the guide groove 310 and collect in the water collection structure 320, and finally be discharged to a specific location through the drain outlet 330. This can effectively prevent the frost water from remaining in the freezer and re-condensing, and significantly improve the defrosting effect.

[0043] Specifically, the freezer provided by this utility model includes a shell 100, an inner liner 200, a defrosting plate 300, a refrigeration component 400, and a defrosting component 500.

[0044] The outer casing 100 is the external structure of the freezer, used to house and protect the various internal components. The casing 100 provides the overall frame and appearance of the freezer, ensuring the stable installation and operation of components such as the inner liner 200, refrigeration unit 400, and defrosting unit 500. A door is located on the top of the casing 100 for opening or closing the inner liner 200.

[0045] The inner liner 200 is located within the outer shell 100 and includes a bottom wall 210 and multiple side walls 220, forming a storage space with an open top. The inner liner 200 is used to store frozen items and ensures that the items are effectively cooled. The frost plate 300 serves to collect frost generated inside the freezer.

[0046] The inner surface of the frost plate 300 is provided with multiple guide grooves 310 at intervals along a first direction. The guide grooves 310 extend along a second direction, effectively guiding the condensed frost water downwards. The bottom water collection structure 320 is connected to the guide grooves 310, ensuring that the melted frost water is guided and discharged, preventing frost water from accumulating in the inner liner 200. The guide grooves 310 can be processed onto the inner surface of the frost plate 300 by injection molding, extrusion molding, machining, hot pressing, or die casting. There is at least one frost plate 300, meaning that a frost plate 300 can be provided on a single side wall 220 of the inner liner 200. In this case, only the outer surface of the side wall 220 with the frost plate 300 is provided with a coil evaporator 430. Alternatively, frost plates 300 can be provided on multiple side walls 220 simultaneously, in which case the outer surfaces of the multiple side walls 220 with the frost plate 300 are all provided with coil evaporators 430. The water collection structure 320 can be a water collection trough, water collection pool, etc., and there are no special restrictions on it.

[0047] The defrost plate 300 can be installed as an independent component, preferably in a detachable manner on the inner wall of the inner liner 200. This offers advantages such as high flexibility, ease of maintenance and replacement, adaptability to different design requirements, and reduced production complexity. It can be disassembled, cleaned, and repaired as needed, reducing maintenance costs and flexibly adapting to different freezer designs. Alternatively, the defrost plate 300 can be integrated with the inner liner 200, enhancing overall integrity, reducing seams, improving the freezer's sealing and cooling performance, and simplifying the freezer assembly process.

[0048] The refrigeration assembly 400 specifically includes a compressor 410, a condenser 420, and a coil evaporator 430, which are connected sequentially to form a circuit. During refrigeration, the refrigerant is compressed by the compressor 410, increasing its temperature and pressure. It then enters the condenser 420, condenses, and flows through a capillary tube into the coil evaporator 430. In the coil evaporator 430, the refrigerant absorbs heat from the storage space and returns to the compressor 410, continuously circulating for refrigeration. The compressor 410 is located inside the housing 100 and is responsible for compressing and delivering the refrigerant to the coil evaporator 430. The coil evaporator 430 is located on the outer surface of the side wall 220 of the inner liner 200, which is equipped with a frost plate 300. While refrigerating the items in the storage space, it also keeps the side wall 220 where the coil evaporator 430 is installed at a lower temperature, causing frost to preferentially condense on the frost plate 300 for easy cleaning. As an example, the bottom of the housing 100 is provided with a compressor compartment 110 for housing the compressor 410, and correspondingly, the bottom of the inner liner 200 is provided with a corresponding clearance space, so that the bottom wall 210 of the inner liner 200 is stepped.

[0049] The defrosting assembly 500 heats the frost plate 300, thereby melting the frost on it. The melted frost flows through the guide channel 310 to the water collection structure 320, and finally drains through the drain outlet 330, preventing the frost from re-condensing, ensuring a dry environment inside the freezer, and preventing frost from re-frosting. The defrosting assembly 500 can heat the frost plate 300 using various methods known in the prior art, such as electric heating wires, hot air circulation, electric heating films, hot water pipes, etc., without any particular limitation.

[0050] See Figure 5 and Figure 6 As shown, according to some embodiments of the present invention, the height of the water collection structure 320 gradually decreases from both sides to the middle along the first direction, so as to collect the melted water at the lowest point of the water collection structure 320.

[0051] By gradually lowering the height of the water collection structure 320 from both sides to the middle along the first direction, the melted frost water can be effectively guided to the lowest point of the water collection structure 320, ensuring that the melted frost water is quickly discharged in the shortest path and avoiding water retention in the freezer.

[0052] Specifically, during defrosting, the defrost water flows downward along the guide channel 310. When it reaches the water collection structure 320, the water can quickly gather at the lowest point of the water collection structure 320 because the sides are higher and the middle area is lower, making it easier to discharge to the set position.

[0053] As an example, in this embodiment, the lowest point of the water collection structure 320 is located in the middle of the water collection structure, which makes it easier for the water collected on both sides of the frost plate 300 to be the same or similar, thereby improving the water collection effect; of course, for the convenience of spatial layout or the setting of the drain outlet 330, the lowest point of the water collection structure 320 can also be set at a position slightly to the left or slightly to the right of the middle (see Figure 6 (The directions shown are not specifically limited).

[0054] In some embodiments, the drain outlet 330 may be located in the middle of the water collection structure 320. When the drain outlet 330 is located in the middle of the water collection structure 320, the frost water on both sides of the water collection structure 320 can be diverted to the drain outlet located in the middle, making it easier to drain the frost water. Of course, the drain outlet 330 can also be provided on the inclined wall surface formed on both sides of the water collection structure 300 to further improve the drainage speed.

[0055] In some embodiments, to prevent frost water from overflowing to the bottom of the inner tank 200, a groove can be provided on the wall of the water collection structure 320, or the wall of the water collection structure 320 can be designed with an outer high and inner low structure, so that a drainage groove is formed between the wall of the water collection structure 320 and the surface of the frost plate 300, which is used to guide the frost water to the drain outlet 330 during defrosting.

[0056] See Figure 5 and Figure 6 As shown, according to some embodiments of the present invention, the inner surface of the frost plate 300 is provided with a wave-shaped structure 340. The wave-shaped structure 340 includes wave crest structures and wave trough structures that are alternately arranged along a first direction. Both the wave crest structures and the wave trough structures extend along a second direction, and the wave trough structures form a guide groove 310.

[0057] By setting the inner surface of the frost-collecting plate 300 to a wave-shaped structure 340, with alternating crests and troughs, the surface area of ​​the inner surface of the frost-collecting plate 300 can be effectively increased, improving the amount of frost and thus reducing the frequency of defrosting. The guide channels 310 formed by the trough structure can better guide the flow of condensed frost water during defrosting, preventing frost water from stagnating on the plate surface. At the same time, the wave-shaped structure 340 can increase the gap between the wall of the frost-collecting plate 300 and the items in the inner liner 200, avoiding excessive contact between the wall of the frost-collecting plate 300 and the actual items, which would reduce the intensity of natural convection in the inner liner 200, thus optimizing the cooling and frost-collecting functions of the frost-collecting plate 300.

[0058] Specifically, during processing, injection molding, hot pressing, and other processes can be used to create the corrugated structure 340 of the frost plate 300. These processes can precisely form crests and troughs on the inner surface of the frost plate 300 to create guide grooves 310 with a set structural precision.

[0059] See Figure 2 and Figure 3 As shown, according to some embodiments of the present invention, a collection trough 120 is provided on one side of the compressor 410, and the collection trough 120 is connected to the drain outlet 330.

[0060] By setting a collection tank 120 on one side of the compressor 410 and connecting the collection tank 120 to the drain outlet 330 of the water collection structure 320, defrost water can be guided into the collection tank 120 during defrosting. The defrost water in the collection tank 120 can be used to cool the area where the compressor 410 is located, thereby reducing the ambient temperature of the compressor 410, reducing the risk of overheating of the compressor 410, and improving the working efficiency and service life of the compressor 410.

[0061] In some embodiments, to ensure timely handling of defrost water, a drain outlet can be provided at the bottom or side wall 220 of the collection tank 120. When defrost water accumulates to a certain level in the collection tank 120, it can be discharged through the drain outlet, preventing the collection tank 120 from overflowing or accumulating excessive water. Simultaneously, the drain outlet ensures that defrost water is effectively discharged at all times, thereby preventing defrost water from affecting the compressor 410 or other components. The opening and closing of the drain outlet can be controlled by a valve or sealing cap, etc.

[0062] See Figure 2 and Figure 3 As shown, according to some embodiments of the present invention, a frost plate 300 is provided on the inner surface of a single sidewall 220.

[0063] By providing a frost-collecting plate 300 only on the inner surface of a single side wall 220, and then providing a coil evaporator 430 only on the outer surface of that side wall 220, the temperature of that side wall 220 can be significantly lower than that of the other side walls 220 during refrigeration. This causes frost to concentrate on the inner surface of the freezer's inner wall, significantly reducing the amount of frost on the other side walls 220 and facilitating defrosting.

[0064] It should be noted that the side wall 220 with the frost plate 300 can be any one of the front and rear side walls 220 of the inner liner 200, or any one of the left and right side walls 220, and there is no special limitation on this.

[0065] Normally, since the surface area of ​​the front and rear side walls 220 of the inner liner 200 is larger than that of the left and right side walls 220, in this embodiment, the frost plate 300 is only provided on the inner surface of the side wall 220 corresponding to the back of the inner liner 200. Under the premise of ensuring sufficient frost area, it is also convenient to arrange the coil evaporator 430 on the back of the freezer, so as to make more efficient use of the space inside the freezer.

[0066] See Figure 4As shown, according to some embodiments of the present invention, the defrosting assembly 500 includes a coiled heating wire 510, which is disposed on the outer surface of the side wall 220 on which the frost plate 300 is provided, and the outline of the coiled heating wire 510 is adapted to the shape of the frost plate 300.

[0067] By placing the coiled heating wire 510 on the outer surface of the side wall 220 where the frost plate 300 is located, and adapting the outline of the coiled heating wire 510 to the shape of the frost plate 300, the area of ​​the frost plate 300 can be heated efficiently during the defrosting process, thereby optimizing the defrosting effect and improving defrosting efficiency.

[0068] Specifically, when the heating wire is energized, the heat generated can cover the entire area of ​​the frost-reducing plate 300, so that the frost condensed on different parts of the frost-reducing plate 300 can be effectively melted.

[0069] It should be noted that the coiled heating wire 510 specifically refers to a heating element heated by an electric current. Its structure is formed by coiling resistance wire or heating wire. Due to its coiled structure, it can effectively adhere to the outer surface of the side wall 220 where the defrosting plate 300 is located, ensuring the coverage of heat during defrosting.

[0070] See Figure 4 and Figure 7 As shown, according to some embodiments of the present invention, the winding directions of the coiled heating wire 510 and the coiled evaporator 430 are interleaved.

[0071] By setting the winding direction of the coiled heating wire 510 and the coiled evaporator 430 to be staggered, the defrosting effect of the coiled heating wire 510 can be optimized.

[0072] Specifically, experiments revealed that during refrigerator cooling, frost first forms on the relatively cooler areas of the frost-collecting plate 300, then spreads to other relatively warmer areas on the wall surface. Because the area on the frost-collecting wall surface corresponding to the shape of the evaporator coil 430 has a relatively lower temperature, the frost distribution on the frost-collecting wall surface resembles the disc shape of the evaporator coil 430. By setting the winding direction of the coiled heating wire 510 and the evaporator coil 430 to be staggered, the heating wire can better cover the areas where thick frost accumulates during defrosting, thereby optimizing the defrosting effect.

[0073] As an example, in this embodiment, the coil evaporator 430 is wound in the first direction, and the coiled heating wire 510 is wound in the second direction. The two winding directions are perpendicular to each other, which facilitates the layout.

[0074] See Figure 8 As shown, the coiled heating wire 510 includes a spirally coiled main body 511, with the spiral center of the main body 511 located in the central region of the corresponding sidewall 220.

[0075] By making the main body 511 of the coiled heating wire 510 spirally coiled, the temperature of the center of the main body 511 can be higher than that of the surrounding area when energized, thereby optimizing the defrosting effect.

[0076] Specifically, during the use of a freezer, the arrangement of items affects the frost distribution on the defrost plate 300. Typically, this results in thicker frost in the central area and thinner frost around the edges. By designing the main body 511 of the coiled heating wire 510 as a spiral coil, the central area of ​​the defrost plate 300 can be heated more effectively, causing the thicker frost to melt and fall off more quickly, thus optimizing the defrosting effect.

[0077] See Figure 9 As shown, according to some embodiments of the present invention, the defrosting assembly 500 includes a four-way reversing valve 520, and the refrigeration assembly 400 also includes a condenser 420; the outlet end of the compressor 410 is connected to the first interface of the four-way reversing valve 520, the second interface of the four-way reversing valve 520 is connected to the inlet of the condenser 420, the outlet of the condenser 420 is connected to the third interface of the four-way reversing valve 520, and the fourth interface of the four-way reversing valve 520 is connected to the coil evaporator 430.

[0078] By setting a four-way reversing valve 520, during defrosting, the outlet of the compressor 410 can be directly connected to the coil evaporator 430 using the four-way reversing valve 520, and the coil evaporator 430 can be used to heat the defrosting plate 300, that is, the compressor 410 exhausts gas for defrosting, without the need to set up additional heating defrosting components such as electric heating wires.

[0079] Specifically, the four-way reversing valve 520 includes a first valve 521, a second valve 522, and a third valve 523. During refrigeration, the second valve 522 is closed, and the first valve 521 and the third valve 523 are open. The refrigerant flows sequentially through the compressor 410, the first valve 521, the condenser 420, the third valve 523, and the coil evaporator 430, ultimately returning to the compressor 410. During defrosting, the first valve 521 and the third valve 523 are closed, and the second valve 522 is open. The refrigerant flows sequentially through the compressor 410, the second valve 522, and the coil evaporator 430, ultimately returning to the compressor 410.

[0080] See Figure 3 and Figure 6As shown, according to some embodiments of the present invention, the refrigeration assembly 400 further includes a fan 440, which is disposed on the defrosting plate 300. The fan 440 is used to blow air in the storage space to the area where the coil evaporator 430 is located on the defrosting plate 300. The defrosting plate 300 is provided with a conductive structure 350, which is used to connect the area where the coil evaporator 430 is located with the storage space.

[0081] By setting up the fan 440, the air in the storage space can be blown to the area where the coil evaporator 430 is located on the defrost plate 300 for cooling, and then returned to the storage space through the conduction structure 350 to cool the items. This can achieve direct cooling of the coil evaporator 430 and air cooling of the fan 440, thereby improving the cooling effect of the freezer.

[0082] The number of fans 440 can be single or multiple, and the conduction structure 350 can be holes, slots, or other hollow structures, without any special restrictions.

[0083] Preferably, in this embodiment, the number of fans 440 is one, and the fans 440 are located in the upper middle part of the frost plate 300. The guide structure 350 is a guide groove, and guide grooves are provided on both sides of the frost plate 300.

[0084] The fan 440 is located in the upper middle part of the defrost plate 300, which can prevent items stored in the inner liner 200 from blocking the air inlet side of the fan 440. Both sides of the defrost plate 300 are provided with guide grooves, which can allow the air cooled by the coil evaporator 430 to enter the inner liner 200 from both sides of the defrost plate 300 during refrigeration, resulting in high air intake efficiency.

[0085] See Figure 10 As shown, according to some embodiments of the present invention, the refrigeration component 400 further includes a fan mounting bracket 450, which is disposed on the defrosting plate 300, and the fan 440 is disposed on the fan mounting bracket 450; a fan heating wire 460 is provided on the outer periphery of the fan mounting bracket 450.

[0086] By installing a fan heating wire 460 around the fan 440, the fan 440 can be defrosted using the fan heating wire 460, thus preventing frost buildup on the surface of the fan 440 from affecting its normal operation and airflow.

[0087] Specifically, during the refrigeration process of the freezer, cold air is propelled and circulated by the fan 440. If frost forms on the surface of the fan 440, the frost layer will increase the rotational resistance of the fan 440, thereby reducing the efficiency of the fan 440, and may even cause the fan 440 to stop or be damaged. By setting the fan heating wire 460, frost formation on the fan 440 can be effectively prevented, ensuring the long-term stable operation of the fan 440.

[0088] According to some embodiments of the present invention, a fan heating wire 460 is provided on the back of the fan mounting bracket 450.

[0089] By installing a fan heating wire 460 on the back of the fan mounting bracket 450, the fan heating wire 460 can also be used to defrost the fan 440, preventing frost buildup on the surface of the fan 440 from affecting the normal operation of the fan 440 and airflow.

[0090] Specifically, during the actual operation of the freezer, frost will preferentially condense in the lower temperature area (i.e., the back of the fan mounting bracket 450). By setting the fan heating wire 460 on the back of the fan mounting bracket 450, the defrosting effect on the back of the fan mounting bracket 450 can be improved, thereby achieving a more efficient defrosting effect of the fan 440.

[0091] In practice, a groove can be provided on the back of the fan mounting bracket 450, and the fan heating wire 460 can be embedded in the groove.

[0092] Of course, in some embodiments, fan heating wires 460 can also be provided on the outer periphery of the fan mounting bracket 450 and on the back of the fan mounting bracket 450 to further improve the defrosting effect on the fan 440.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A refrigerator characterized by, include: case; The inner liner is disposed inside the shell. The inner liner includes a bottom wall and multiple side walls, which together form a storage space with a top opening. A frost-collecting plate, wherein at least one of the inner surfaces of the sidewalls is provided with the frost-collecting plate, the inner surface of the frost-collecting plate is provided with a plurality of guide grooves spaced apart along a first direction, the guide grooves extend along a second direction, the bottom of the inner surface of the frost-collecting plate is provided with a water collection structure, the guide grooves are connected to the water collection structure, and the water collection structure is provided with a drain outlet; A refrigeration assembly, comprising a compressor and a coil evaporator, wherein the compressor is connected to the coil evaporator, the compressor is disposed within the housing, and the coil evaporator is disposed on the outer surface of the sidewall on which the defrosting plate is provided; A defrosting assembly is disposed within the housing and is used to heat the defrosting plate to defrost it.

2. The freezer according to claim 1, characterized in that, The height of the water collection structure gradually decreases from both sides to the middle along the first direction, so as to collect the melted water at the lowest point of the water collection structure.

3. The freezer according to claim 1, characterized in that, The inner surface of the frost plate is provided with a wave-shaped structure, which includes wave crests and troughs that are alternately arranged along a first direction. Both the wave crests and the troughs extend along a second direction, and the troughs form the flow guide groove.

4. The freezer according to claim 1, characterized in that, The defrosting plate is detachably connected to the inner liner; Alternatively, the defrosting plate and the inner liner may be integrally formed.

5. The freezer according to claim 1, characterized in that, The inner surface of a single sidewall is provided with the frost-collecting plate, which is located on the inner surface of the sidewall of the inner liner at the back.

6. The freezer according to claim 1, characterized in that, The defrosting assembly includes a coiled heating wire disposed on the outer surface of the sidewall on which the defrosting plate is located, and the outline of the coiled heating wire is adapted to the shape of the defrosting plate.

7. The freezer according to claim 6, characterized in that, The winding directions of the coiled heating wire and the coiled evaporator are intersecting; Alternatively, the coiled heating wire includes a spirally coiled main body, the spiral center of which is located in the central region corresponding to the sidewall.

8. The freezer according to claim 1, characterized in that, The defrosting assembly includes a four-way reversing valve, and the refrigeration assembly also includes a condenser; The compressor outlet is connected to the first port of the four-way reversing valve, the second port of the four-way reversing valve is connected to the inlet of the condenser, the outlet of the condenser is connected to the third port of the four-way reversing valve, and the fourth port of the four-way reversing valve is connected to the coil evaporator.

9. The freezer according to claim 1, characterized in that, The refrigeration component also includes a fan, which is disposed on the defrosting plate. The fan is used to blow air in the storage space to the area where the coil evaporator is located corresponding to the defrosting plate. The defrosting plate is provided with a conductive structure, which is used to connect the area where the coil evaporator is located with the storage space.

10. The freezer according to claim 9, characterized in that, The refrigeration assembly also includes a fan mounting bracket, which is mounted on the defrosting plate, and the fan is mounted on the fan mounting bracket; The fan mounting bracket is provided with fan heating wires on its outer periphery, and / or the fan mounting bracket is provided with fan heating wires on its back.

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