Refrigeration equipment

Abstract

The utility model relates to refrigeration equipment, which comprises a box body and a refrigeration device, a storage chamber is arranged in the refrigerator liner; the evaporator is used for providing cooling capacity for the storage chamber; the evaporator comprises an evaporation pipe, the evaporation pipe comprises straight pipe sections, and the multiple straight pipe sections are arranged in parallel at intervals; the two ends of the bent pipe section are connected with one ends of the two adjacent straight pipe sections respectively; the plurality of heat dissipation fins are connected to the straight pipe section at intervals; the PTC heaters are arranged among the plurality of straight pipe sections, and the PTC heaters are fixedly connected with the straight pipe sections; when the PTC heater works, heat of the PTC heater can be transmitted into the straight pipe section from the connecting position of the PTC heater, and then frost on the straight pipe section can be heated, melted and discharged. Heat of the PTC heater can be transmitted to the cooling fins and the bent pipe section through the straight pipe section, and defrosting of the evaporator is achieved.

Description

Technical Field

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

[0002] Refrigerator equipment, such as refrigerators, freezers, and wine cabinets, utilizes a refrigerant phase change to create a low-temperature environment for storing food. These appliances are essential for home life. As living standards improve, the demands placed on refrigeration equipment are also increasing.

[0003] Conventional refrigeration equipment generally includes a box body and a box liner arranged in the box body, wherein a storage chamber is formed in the box liner. An evaporator is also arranged in the box body, and the evaporator is used to provide cold energy for the storage chamber to achieve cooling in the storage chamber.

[0004] Currently, in refrigeration equipment, when the evaporator is operating, if the evaporator temperature is too low, water vapor in the air duct will condense on the evaporator surface, forming frost on it. This affects the evaporator's heat exchange efficiency and, in turn, the refrigerator's performance. Existing technology typically heats the evaporator using an electric heating pipe, melting the frost into liquid water for discharge. This heating pipe uses a constant-power heating solution, resulting in uncontrollable defrosting temperature, high power consumption, and significant dependence on power supply voltage. Utility Model Content

[0005] The purpose of the utility model is to provide a refrigeration device to improve the defrosting performance of an evaporator in the refrigeration device.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] According to one aspect of the utility model, the utility model provides a refrigeration device, which includes: a box body, which is constructed as an outer shell of the refrigeration device; a box liner, which is arranged in the box body, and a storage chamber is provided in the box liner; an evaporator, which is arranged in the box body, and the evaporator is used to provide cooling for the storage chamber; the evaporator includes: an evaporator tube, which includes: a straight pipe section, which is provided with a plurality of straight pipe sections, and the plurality of straight pipe sections are arranged in parallel and at intervals; a bent pipe section, which is provided between adjacent straight pipe sections, and the two ends of the bent pipe section are respectively connected to one end of two adjacent straight pipe sections; a plurality of heat dissipation fins, which are provided, and the plurality of heat dissipation fins are connected to the straight pipe sections at intervals; a PTC heater, which is provided between the plurality of straight pipe sections, and the PTC heater is fixedly connected to the straight pipe sections; wherein, when the PTC heater is working, the heat of the PTC heater can be transferred from its connection to the straight pipe section.

[0008] The above technical solution has the following advantages or beneficial effects: the PTC heater is fixedly connected to the straight pipe section. When the PTC heater is working, the heat of the PTC heater can be directly transferred from the connection between the PTC heater and the straight pipe section to the straight pipe section, thereby causing the frost on the straight pipe section to melt and be discharged. The heat of the PTC heater can be transferred to the heat dissipating fins and the curved pipe section through the straight pipe section, thereby causing the frost on the heat dissipating fins and the curved pipe section to melt and be discharged, thereby realizing the defrosting function of the evaporator. In addition, the heat of the PTC heater can be transferred to the heat dissipating fins by natural convection, so that the heat dissipating fins are heated evenly, thereby improving the defrosting effect of the evaporator.

[0009] In some embodiments of the present application, the extension direction of the PTC heater is arranged perpendicular to the extension direction of the straight pipe section, and the PTC heater is sequentially connected to multiple straight pipe sections; the PTC heater is arranged parallel to and spaced apart from the heat dissipation fins.

[0010] The above technical solution has the following advantages or beneficial effects: by arranging the PTC heater in parallel on one side of the heat sink, it is also possible to facilitate the fixed connection of the PTC heater to each straight pipe section. The heat of the PTC heater can be directly transferred from the connection point to each straight pipe section, improving the heat transfer efficiency between the PTC heater and the straight pipe section, thereby improving the defrosting effect of the evaporator. In addition, when the PTC heater is heated, the heat of the PTC heater can be transferred to the surrounding air, facilitating the transfer of heat from the PTC heater to the parallel arranged heat sink fins through natural convection, so that the heat sink fins are heated evenly and the defrosting effect of the evaporator is improved.

[0011] In some embodiments of the present application, the plurality of straight pipe sections include at least two groups, and the two groups of straight pipe sections are arranged in parallel and spaced apart; the PTC heater is arranged in the area between the two groups of straight pipe sections, and the opposite sides of the PTC heater are respectively connected to the plurality of straight pipe sections of the two groups of straight pipe sections.

[0012] The above technical solution has the following advantages or beneficial effects: when the PTC heater is heating, the heat of the PTC heater can be transferred to multiple straight pipe sections of the two groups of straight pipe sections at the same time, thereby improving the heat transfer efficiency and thus improving the defrosting effect of the evaporator.

[0013] In some embodiments of the present application, opposite sides of the PTC heater are respectively fixedly connected to the plurality of straight pipe sections of the two groups of straight pipe sections by welding.

[0014] The above technical solution has the following advantages or beneficial effects: the heat of the PTC heater can be directly transferred from the welding connection to each straight pipe section, thereby improving the heat transfer efficiency between the PTC heater and the straight pipe section 211, thereby improving the defrosting effect of the evaporator.

[0015] In some embodiments of the present application, a metal sheet is connected to each of the opposite sides of the PTC heater, and the extension direction of the two metal sheets is consistent with the extension direction of the PTC heater; one metal sheet is sleeved on multiple straight pipe sections of a group of straight pipe sections, and the other metal sheet is sleeved on multiple straight pipe sections of another group of straight pipe sections.

[0016] The above technical solution has the following advantages or beneficial effects: When the PTC heater is heating, the heat from the PTC heater is simultaneously transferred to the metal sheets on both sides. The two metal sheets then transfer heat to the multiple straight pipe sections of the two groups of straight pipe sections, improving the heat transfer efficiency and thus the defrosting effect of the evaporator. Furthermore, the metal sheets increase the contact area between the PTC heater and the surrounding air, facilitating the transfer of heat from the PTC heater to the heat sink fins via natural convection, ensuring uniform heating of the fins and improving the defrosting effect of the evaporator.

[0017] In some embodiments of the present application, the two metal sheets are respectively welded to opposite sides of the PTC heater.

[0018] The above technical solution has the following advantages or beneficial effects: by welding the seams, the connection stability between the PTC heater and the two metal sheets can be ensured, and the efficiency of heat transfer from the PTC heater to the metal sheets can be ensured.

[0019] In some embodiments of the present application, the PTC heater is provided at one end of the straight pipe section, and the PTC heater is provided on one side of the plurality of heat dissipation fins.

[0020] The above technical solution has the following advantages or beneficial effects: during the evaporator assembly process, the PTC heater can be installed and fixed at the end of the straight pipe section and fixed to one side of the heat dissipation fin before installing the end plate of the evaporator, which can facilitate improving the assembly efficiency of the PTC heater and the evaporator.

[0021] In some embodiments of the present application, the PTC heater is disposed between any two adjacent heat dissipation fins.

[0022] The above technical solution has the following advantages or beneficial effects: the heat of the PTC heater can be transferred to the heat dissipation fins on both sides through the two metal sheets by natural convection, so that the heat dissipation fins on both sides are heated evenly, thereby improving the defrosting effect of the evaporator.

[0023] In some embodiments of the present application, the extension direction of the PTC heater is arranged parallel to the extension direction of the straight pipe section, the PTC heater is arranged between any two adjacent straight pipe sections, and the opposite sides of the PTC heater can be respectively connected to one of the straight pipe sections in parallel.

[0024] The above technical solution has the following advantages or beneficial effects: when the PTC heater is heating, the heat of the PTC heater can be transferred to the straight pipe sections on both sides at the same time, thereby improving the heat transfer efficiency and thus improving the defrosting effect of the evaporator.

[0025] In some embodiments of the present application, two opposite sides of the PTC heater are respectively fixedly connected to one of the straight pipe sections by welding.

[0026] The above technical solution has the following advantages or beneficial effects: by welding, the connection stability between the PTC heater and the two straight pipe sections can be ensured, and the efficiency of heat transfer from the PTC heater to the straight pipe sections can be ensured.

[0027] Details of other embodiments are included in the detailed description and accompanying drawings.

[0028] The effects of the present invention are not limited to the effects mentioned above, and those skilled in the art can clearly understand other effects not mentioned from the description of the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of refrigeration equipment in some embodiments of the present utility model.

[0030] Figure 2 yes Figure 1 Schematic diagram of the structure of the evaporator.

[0031] Figure 3 yes Figure 2 Front views of some embodiments.

[0032] Figure 4 yes Figure 3 Top view of .

[0033] Figure 5 yes Figure 3 Middle AA section view.

[0034] Figure 6 yes Figure 4 A partially enlarged schematic diagram.

[0035] Figure 7 yes Figure 3 Middle BB section view.

[0036] Figure 8 yes Figure 4 Another partial enlarged schematic diagram in .

[0037] Figure 9 yes Figure 2 Front views of some other embodiments.

[0038] Figure 10 yes Figure 9 Top view of .

[0039] Figure 11 yes Figure 9 Center CC section view.

[0040] Figure 12 yes Figure 10 A partially enlarged schematic diagram.

[0041] Figure 13 yes Figure 9 Middle DD section view.

[0042] Figure 14 yes Figure 10 Another partial enlarged schematic diagram in .

[0043] Figure 15 yes Figure 2 Front views of some other embodiments.

[0044] Figure 16 yes Figure 15 EE section view.

[0045] Figure 17 yes Figure 16 Middle FF section view.

[0046] The description of the accompanying numbers is as follows: 1. Box body; 10. Storage room; 11. Box liner; 12. Evaporation chamber; 2. Evaporator; 21. Evaporation tube; 211. Straight pipe section; 212. Bend pipe section; 22. Heat dissipation fin; 221. First axis perforation; 222. Through hole; 23. End plate; 3. PTC heater; 31. Metal sheet; 311. Second axis perforation. DETAILED DESCRIPTION

[0047] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention is capable of various variations in different embodiments without departing from the scope of the present invention, and that the descriptions and illustrations herein are intended to be illustrative in nature and not to limit the present invention.

[0048] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0049] Furthermore, 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 number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the described features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0050] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0051] Figure 1 It is a structural schematic diagram of refrigeration equipment in some embodiments of the present utility model.

[0052] like Figure 1 As shown, the refrigeration device provided in an embodiment of the present invention may include a housing 1. The housing 1 may be configured as an external housing for the refrigeration device. The housing 1 may typically have a hollow rectangular structure. It should be noted that in other embodiments, the external shape of the housing 1 may be designed as desired and is not limited here. The interior of the housing 1 may be used to provide installation space.

[0053] In some embodiments, a storage chamber 10 may be formed in the box body 1. The storage chamber 10 may be used as an independent storage space, and may be used as a refrigeration chamber, a temperature-changing chamber, a freezer, etc., to meet different storage needs such as refrigeration and freezing according to the types of stored items.

[0054] In some embodiments, a plurality of storage chambers 10 may be provided in the box body 1. The plurality of storage chambers 10 may be arranged in the box body 1 in a manner of being divided vertically or horizontally.

[0055] like Figure 1 As shown, in some embodiments, a door (not shown) may be provided on the front side of the refrigerator body 1. The door can be used to open and close the storage compartment 10. The door can be connected to the refrigerator body 1 via a hinge, so that the refrigerator door can rotate about the axis of the hinge to open and close the refrigerator door, thereby opening and closing the corresponding storage compartment 10.

[0056] In some embodiments, multiple doors can be provided. Multiple doors can be provided in a one-to-one correspondence with multiple storage chambers 10. It should be noted that, in other embodiments, multiple doors can also open and close a storage chamber 10 at the same time.

[0057] like Figure 1 As shown, in some embodiments, a casing 1 may be provided within the casing 1. The storage chamber 10 may be formed within the casing 11. Multiple casings 11 may be provided within the casing 1. The multiple casings 11 may be arranged within the casing 1 in a vertically separated or horizontally separated manner. Each casing 11 may form one or more storage chambers 10.

[0058] In some embodiments, the cabinet 1 may be provided with two linings 11, which may be a refrigerator lining 11 and a freezer lining 11, respectively. The refrigerator lining 11 and the freezer lining 11 may be arranged adjacent to each other. A refrigerator compartment may be formed within the refrigerator lining 11. A freezer compartment may be formed within the freezer lining 11. The freezer lining 11 may be arranged below the refrigerator lining 11, such that the freezer compartment is spaced apart and located below the bottom of the refrigerator compartment.

[0059] like Figure 1 As shown, in some embodiments, a refrigeration system may be provided in the cabinet 1. The refrigeration system may be provided inside the cabinet 1. The refrigeration system may be used to provide cold air inside the refrigerator to maintain a low temperature environment in each storage chamber 10.

[0060] In some embodiments, the refrigeration system may include a compressor (not shown in the figure). The compressor may compress the refrigerant into high-temperature and high-pressure refrigerant vapor.

[0061] In some embodiments, the refrigeration system may include a condenser (not shown). The compressor may deliver compressed refrigerant to the condenser. The condenser may condense high-temperature and high-pressure refrigerant vapor.

[0062] In some embodiments, the refrigeration system may include a throttling device (not shown). The condenser may deliver the condensed refrigerant to the throttling device. The throttling device may be a capillary tube. The throttling device may be used to throttle and reduce the pressure of the refrigerant.

[0063] In some embodiments, the refrigeration system may include an evaporator 2. A throttling device may deliver the throttled and depressurized refrigerant to the evaporator 2. The evaporator 2 may be used to evaporate and boil the refrigerant vapor so as to absorb heat from the surrounding medium.

[0064] In some embodiments, the compressor, the condenser, the throttling device, and the evaporator 2 may be sequentially connected to form a refrigeration circuit. Refrigerant may circulate in the refrigeration circuit to achieve cooling of the interior of the cabinet 1.

[0065] like Figure 1 As shown, in some embodiments, a press chamber (not shown) may be provided in the housing 1. The press chamber may be provided in the bottom area of the housing 1. The press chamber may be located at the rear lower side of the storage chamber 10. The press chamber may be located at the rear lower side of the freezer liner 11. A compressor, a condenser, etc. may be provided in the press chamber. When the compressor and the condenser are operating, they will respectively emit heat, causing the temperature in the press chamber to rise.

[0066] It should be noted that, in some other embodiments, the press chamber may also be arranged at other positions in the box body 1.

[0067] like Figure 1 As shown, in some embodiments, an evaporation chamber 12 (not shown) may be provided within the housing 1. An evaporator 2 may be provided within the evaporation chamber 12. The evaporation chamber 12 may be located within the freezer compartment 11. The evaporation chamber 12 may be separated from the freezer compartment. The evaporator 2 may absorb heat from the evaporation chamber 12, generating a large amount of cold air within the evaporation chamber 12. This cold air is then transported to each storage compartment 10, enabling low-temperature storage in the freezer and refrigerator compartments.

[0068] It should be noted that, in some other embodiments, the evaporation chamber 12 may also be arranged outside the box 11 .

[0069] In some embodiments, a refrigeration air duct assembly (not shown) may be provided in the housing 1. The refrigeration air duct assembly may be provided in the freezer liner 11. The evaporation chamber 12 may be formed between the refrigeration air duct assembly and the inner wall of the freezer liner 11.

[0070] In some embodiments, a refrigeration air supply duct (not shown) may be formed in the refrigeration air duct assembly. The refrigeration air supply duct may connect the evaporation bin 12 and the freezing chamber to deliver cold air into the freezing chamber, thereby achieving a refrigeration function in the freezing chamber.

[0071] In some embodiments, the freezing air duct assembly can be provided on the back side of the freezing chamber. The freezing chamber can be formed on the front side of the freezing air duct assembly. The evaporation bin 12 can be formed between the back side of the freezing air duct assembly and the rear wall of the first casing 11.

[0072] It should be noted that, in other embodiments, the freezing air duct assembly may also be provided on other side walls of the freezing chamber 11. Accordingly, the evaporation chamber 12 may be formed between the freezing air duct assembly and other inner walls of the freezing chamber 11.

[0073] Figure 2 yes Figure 1 Schematic diagram of the structure of the evaporator 2. Figure 3 yes Figure 2 Front views of some embodiments.

[0074] like Figure 2 and Figure 3 As shown, in some embodiments, the evaporator 2 may include an evaporator tube 21. The evaporator tube 21 may be a curved, stacked pipe structure. A refrigerant may flow within the evaporator tube 21, and the cooling energy generated by the refrigerant may be transferred to the outer wall of the evaporator tube 21. The refrigerant may absorb heat from the surrounding air through the evaporator tube 21, thereby achieving cooling.

[0075] In some embodiments, the evaporator 2 may include heat dissipation fins 22. The heat dissipation fins 22 may be located on the outer wall of the evaporator tube 21. The cooling energy generated by the refrigerant can be transferred through the evaporator tube 21 to the heat dissipation fins 22. The heat dissipation fins 22 then exchange heat with the surrounding air, absorbing heat from the surrounding air and thereby achieving cooling. This increases the heat exchange contact area between the evaporator 2 and the surrounding air, improving both the heat exchange efficiency and the cooling efficiency of the evaporator 2.

[0076] In some embodiments, the evaporator 2 may include a plurality of heat dissipation fins 22. The plurality of heat dissipation fins 22 may be sequentially and spaced apart on the outer wall of the evaporation tube 21. The plurality of heat dissipation fins 22 may further increase the heat exchange contact area between the evaporator 2 and the surrounding air.

[0077] It should be noted that the number of the heat dissipation fins 22 and the spacing between the heat dissipation fins 22 can be adjusted as needed and are not limited here.

[0078] like Figure 2 and Figure 3 As shown, in some embodiments, the evaporator tube 21 may include a straight tube section 211. The straight tube section 211 may be a tubular structure that extends laterally. A plurality of straight tube sections 211 may be provided, and the plurality of straight tube sections 211 may be arranged in parallel and spaced apart in the box body 1. The plurality of straight tube sections 211 may be laid out to form a planar structure, which may be a vertical plane. The refrigerant may flow sequentially in the plurality of straight tube sections 211 of the evaporator tube 21. In this way, the plurality of straight tube sections 211 may improve space utilization, increase the contact area between the evaporator tube 21 and the surrounding air, and thereby improve the cooling efficiency of the surrounding space.

[0079] It should be noted that, in some embodiments, the number of straight pipe sections 211 and the intervals between adjacent straight pipe sections 211 can be adjusted as needed, and are not limited here.

[0080] like Figure 2 and Figure 3 As shown, in some embodiments, the evaporator tube 21 may include a curved tube section 212. The curved tube section 212 may be a tubular structure with a C-shape or U-shape bend. The curved tube section 212 may be disposed between one end portion of adjacent straight tube sections 211. The two ends of the curved tube section 212 are respectively connected to one end of two adjacent straight tube sections 211. Specifically, one end of the curved tube section 212 is connected to one end of a straight tube section 211 in a smooth bend, and the other end of the curved tube section 212 is connected to the corresponding end of another adjacent straight tube section 211 in a smooth bend. In this way, two adjacent straight tube sections 211 can be connected through the curved tube section 212.

[0081] It should be noted that, in some embodiments, the number of curved pipe sections 212 is adjusted according to the number of straight pipe sections 211 , and no specific limitation is imposed herein.

[0082] In some embodiments, multiple curved pipe sections 212 may be provided. Multiple curved pipe sections 212 may be alternately disposed between the ends of two adjacent straight pipe sections 211. One transverse end of a straight pipe section 211 may be connected to a curved pipe section 212, which in turn connects to an adjacent straight pipe section 211 via the curved pipe section 212. The other transverse end of a straight pipe section 211 may be connected to another curved pipe section 212, which in turn connects to another adjacent straight pipe section 211 via the curved pipe section 212. In this manner, multiple straight pipe sections 211 may be sequentially connected via the multiple curved pipe sections 212, allowing refrigerant to flow through each straight pipe section 211 in sequence.

[0083] Figure 4 yes Figure 3 Top view of .

[0084] like Figure 2 and Figure 4 As shown, in some embodiments, the multiple straight pipe sections 211 of the evaporating tube 21 can be divided into at least two groups. The two groups of straight pipe sections 211 can be arranged in parallel and spaced apart. For example, the multiple straight pipe sections 211 of one group of straight pipe sections 211 can be laid together to form a plane structure, and the multiple straight pipe sections 211 of the other group of straight pipe sections 211 can be laid together to form another plane structure, and the two plane structures can be arranged in parallel and spaced apart. The two groups of straight pipe sections 211 in the two plane structures can be arranged in parallel and spaced apart in a one-to-one correspondence. In this way, by dividing the multiple straight pipe sections 211 of the evaporating tube 21 into at least two groups, the two groups of straight pipe sections 211 can form multiple plane structures, which can further improve the utilization rate of the surrounding space, increase the contact area between the evaporating tube 21 and the surrounding air, and thus improve the cooling efficiency of the surrounding space.

[0085] It should be noted that, in some embodiments, the plurality of straight tube sections 211 of the evaporation tube 21 can be divided into multiple groups, for example, three or more groups. The number of groups of the plurality of straight tube sections 211 can be adjusted as needed and is not specifically limited here.

[0086] like Figure 2 and Figure 4 As shown, in some embodiments, a plurality of heat dissipating fins 22 are sequentially and spaced apart and fixedly mounted on the outer wall of the straight pipe section 211. The plurality of heat dissipating fins 22 can be welded to the outer wall of the straight pipe section 211. The plane on which the heat dissipating fins 22 are located can be arranged perpendicular to the extension direction of the straight pipe section 211. In this way, the cooling capacity of the refrigerant can be transferred to the heat dissipating fins 22 through the straight pipe section 211, increasing the contact area between the straight pipe section 211 and the surrounding air within a unit space, thereby improving the cooling efficiency of the surrounding space.

[0087] In some embodiments, the plurality of heat dissipating fins 22 may be divided into multiple groups. The multiple groups of heat dissipating fins 22 may be correspondingly mounted on different straight pipe sections 211. The multiple groups of heat dissipating fins 22 may be correspondingly mounted on one or more straight pipe sections 211.

[0088] like Figure 2 and Figure 4 As shown, in some embodiments, the evaporator 2 may include an end plate 23. Two end plates 23 may be provided, and the two end plates 23 may be respectively arranged at both ends of the evaporating tube 21. The two end plates 23 may be arranged in parallel and spaced apart. A plurality of heat dissipation fins 22 may be provided in the area between the two end plates 23. One end of the plurality of straight pipe sections 211 of the evaporator 2 may be supported and fixed on one end plate 23, and the other end of the plurality of straight pipe sections 211 of the evaporator 2 may be supported and fixed on the other end plate 23. Each curved pipe section 212 and each heat dissipation fin may be respectively fixed on the corresponding straight pipe section 211. In this way, each straight pipe section 211, each curved pipe section 212 and each heat dissipation fin 22 in the evaporator 2 can be relatively fixed through the end plate 23 and assembled into one, forming a structurally stable evaporator 2 structure, thereby improving the structural strength of the evaporator 2.

[0089] It should be noted that in some embodiments, during the assembly process of the evaporator 2, multiple heat dissipation fins 22 can first be sequentially mounted and welded onto the outer wall of one or more straight tube segments 211, and then the end plate 23 can be fixed to the ends of the multiple straight tube segments 211. Finally, the curved tube segments 212 can be welded to the ends of the straight tube segments 211 on the outer side of the end plate 23 to form a stable structure of the evaporator 2. This installation method can reduce the difficulty of assembling the evaporator 2 and improve the assembly efficiency of the evaporator 2.

[0090] Figure 5 yes Figure 3 Middle AA section view.

[0091] like Figure 5 As shown, in some embodiments, the heat dissipation fin 22 may be provided with a plurality of first axial through-holes 221. The plurality of first axial through-holes 221 may be sequentially spaced along the extension direction of the heat dissipation fin 22. The heat dissipation fin 22 may be sequentially sleeved on the plurality of straight pipe sections 211 through the plurality of first axial through-holes 221.

[0092] Figure 6 yes Figure 4 A partially enlarged schematic diagram.

[0093] like Figure 5 and Figure 6 As shown, in some embodiments, the refrigeration device may include a PTC heater 3. The PTC heater 3 is provided on the evaporator 2. The PTC heater 3 heats the evaporator 2, so that frost on the evaporator 2 is melted and discharged.

[0094] In some embodiments, the PTC heater 3 can utilize a constant-temperature PTC thermistor, which may exhibit a constant-temperature heating characteristic. The principle of a PTC thermistor is that, after power is applied, the PTC thermistor self-heats, causing its resistance to enter a transition region. The surface temperature of the constant-temperature PTC thermistor remains constant, dependent solely on the PTC thermistor's Curie temperature and the applied voltage, and largely unrelated to the ambient temperature. The PTC heater 3 is a heating device designed to utilize the constant-temperature heating characteristic of a constant-temperature PTC thermistor.

[0095] In some embodiments, for low- to medium-power heating applications, the PTC heater 3 offers advantages unmatched by traditional heating elements, including constant-temperature heating, no open flame, high heat conversion efficiency, minimal impact from power supply voltage, and a long lifespan. The PTC heater 3 also offers high safety performance. If the PTC heater 3 is unable to dissipate sufficient heat, its power will automatically drop sharply, resulting in low energy consumption and energy conservation.

[0096] like Figure 5 and Figure 6As shown, in some embodiments, the PTC heater 3 can be arranged in the area between multiple straight pipe sections 211. The PTC heater 3 can be in contact with and connected to the straight pipe section 211. The PTC heater 3 can be fixedly connected to the straight pipe section 211. When the PTC heater 3 is working, the heat of the PTC heater 3 can be directly transferred from the connection between the PTC heater 3 and the straight pipe section 211 to the straight pipe section 211, thereby causing the frost on the straight pipe section 211 to be melted and discharged by heat. The heat of the PTC heater 3 can be transferred to the heat dissipating fins 22 and the curved pipe section 212 through the straight pipe section 211, thereby causing the frost on the heat dissipating fins 22 and the curved pipe section 212 to be melted and discharged by heat, thereby realizing the defrosting function of the evaporator 2. In addition, the heat of the PTC heater 3 can be transferred to the heat dissipating fins 22 by natural convection, so that the heat dissipating fins 22 are heated evenly, thereby improving the defrosting effect of the evaporator 2.

[0097] In some embodiments, the PTC heater 3 can be welded to each straight pipe section 211. The heat of the PTC heater 3 can be directly transferred from the welded connection to each straight pipe section 211, thereby improving the heat transfer efficiency between the PTC heater 3 and the straight pipe section 211, thereby improving the defrosting effect of the evaporator 2.

[0098] like Figure 5 and Figure 6 As shown, in some embodiments, the PTC heater 3 can be arranged in the area between the two groups of straight pipe sections 211, that is, the PTC heater 3 can be arranged between the two groups of planar structures formed by the two groups of straight pipe sections 211. The opposite sides of the PTC heater 3 can be connected to the multiple straight pipe sections 211 of the two groups of straight pipe sections 211, respectively. In this way, one side of the PTC heater 3 can be connected to the multiple straight pipe sections 211 of one group of straight pipe sections 211 in sequence, and the other side of the PTC heater 3 can be connected to the multiple straight pipe sections 211 of the other group of straight pipe sections 211 in sequence. When the PTC heater 3 is heated, the heat of the PTC heater 3 can be transferred to the multiple straight pipe sections 211 of the two groups of straight pipe sections 211 at the same time, thereby improving the heat transfer efficiency and thereby improving the defrosting effect of the evaporator 2.

[0099] like Figure 3 and Figure 5 As shown, in some embodiments, the extension direction of the PTC heater 3 can be arranged perpendicular to the extension direction of the straight pipe section 211. This design allows the PTC heater 3 to be arranged relatively parallel to one side of the heat dissipation fin 22, and also facilitates the fixed connection between the PTC heater 3 and each straight pipe section 211.

[0100] like Figure 6As shown, in some embodiments, the PTC heater 3 can be a plate-shaped structure, and the plane of the plate-shaped structure of the PTC heater 3 can be arranged parallel to and spaced apart from the heat sink fins 22. This allows the PTC heater 3 to be arranged parallel to and spaced apart from the heat sink fins 22. When the PTC heater 3 heats, the heat from the PTC heater 3 is transferred to the surrounding air, facilitating natural convection to transfer the heat from the PTC heater 3 to the parallel heat sink fins 22, ensuring uniform heating of the heat sink fins 22 and improving the defrosting effect of the evaporator 2.

[0101] like Figure 3 and Figure 6 As shown, in some embodiments, the PTC heater 3 can be disposed between the end plate 23 and the adjacent heat sink fins 22. The PTC heater 3 can be arranged parallel to and spaced apart from the end plate 23. The PTC heater 3 can also be arranged parallel to and spaced apart from the adjacent heat sink fins 22. Thus, during assembly of the evaporator 2, the PTC heater 3 can be mounted and fixed to the end of the straight pipe section 211 and to one side of the heat sink fins 22 before installing the end plate 23, thereby improving the assembly efficiency of the PTC heater 3 and the evaporator 2.

[0102] Figure 7 yes Figure 3 Middle BB section view. Figure 8 yes Figure 4 Another partial enlarged schematic diagram in .

[0103] like Figure 3 、 Figure 7 and Figure 8 As shown, in some embodiments, the PTC heater 3 can be provided between any adjacent heat sink fins 22. The PTC heater 3 can be arranged in parallel and spaced apart from the adjacent heat sink fins 22. In this way, one relative two sides of the PTC heater 3 can be welded and connected to the multiple straight pipe sections 211 of the two groups of straight pipe sections 211 in sequence, and the other relative two sides of the PTC heater 3 can be arranged in parallel and spaced apart from the two heat sink fins 22. When the PTC heater 3 is heating, the heat of the PTC heater 3 can be directly transferred to the multiple straight pipe sections 211 of the two groups of straight pipe sections 211 through one relative two sides by heat conduction, thereby improving the heat transfer efficiency; the heat of the PTC heater 3 can be transferred to the heat sink fins 22 on both sides through the other relative two sides by natural convection, so that the heat sink fins 22 are heated evenly, thereby improving the defrosting effect of the evaporator 2.

[0104] In some embodiments, when the evaporator 2 performs cooling operation, the PTC heater 3 can also be used as a heat dissipation fin, thereby improving the heat exchange efficiency of the evaporator 2 .

[0105] like Figure 3 and Figure 4As shown, in some embodiments, multiple PTC heaters 3 can be provided, and multiple PTC heaters 3 can be spaced apart within the evaporator 2. In this way, by controlling the heating and defrosting functions of multiple PTC heaters 3, the flow field distribution within the evaporation chamber can be changed to ensure uniform flow field distribution in each area. The number and location of the PTC heaters 3 can be adjusted as needed and are not specifically limited here.

[0106] Figure 9 yes Figure 2 Front views of some other embodiments. Figure 10 yes Figure 9 Top view of . Figure 11 yes Figure 9 Center CC section view.

[0107] like Figure 9 、 Figure 10 and Figure 11 As shown, in some embodiments, the PTC heater 3 can be arranged in the area between the two groups of straight pipe sections 211. A metal sheet 31 is respectively connected to the opposite sides of the PTC heater 3. The extension direction of the two metal sheets 31 can be consistent with the extension direction of the PTC heater 3. Among them, one metal sheet 31 can be sleeved on multiple straight pipe sections 211 of one group of straight pipe sections 211, and the other metal sheet 31 can be sleeved on multiple straight pipe sections 211 of another group of straight pipe sections 211. In this way, one side of the PTC heater 3 can be connected in sequence with the multiple straight pipe sections 211 of one group of straight pipe sections 211 through a metal sheet 31, and the other side of the PTC heater 3 can be connected in sequence with the multiple straight pipe sections 211 of another group of straight pipe sections 211 through another metal sheet 31. When the PTC heater 3 is heated, the heat of the PTC heater 3 can be transferred to the metal sheets 31 on both sides at the same time, and then transferred to the multiple straight pipe sections 211 of the two groups of straight pipe sections 211 through the two metal sheets 31, thereby improving the heat transfer efficiency and thus improving the defrosting effect of the evaporator 2.

[0108] In addition, the metal sheet 31 can increase the contact area between the PTC heater 3 and the surrounding air, making it easier for the heat of the PTC heater 3 to be transferred to the heat dissipation fins 22 through natural convection, so that the heat dissipation fins 22 are heated evenly, thereby improving the defrosting effect of the evaporator 2.

[0109] like Figure 11As shown, in some embodiments, two metal sheets 31 can be welded to opposite sides of the PTC heater 3. A weld can be formed between one side of the PTC heater 3 and the side edge of one metal sheet 31, through which the metal sheet 31 can be welded and fixed to one side of the PTC heater 3. Another weld can be formed between the other side of the PTC heater 3 and the side edge of the other metal sheet 31, through which the metal sheet 31 can be welded and fixed to the other side of the PTC heater 3. In this way, the connection stability between the PTC heater 3 and the two metal sheets 31 can be ensured by welding, and the efficiency of heat transfer from the PTC heater 3 to the metal sheets 31 can be ensured.

[0110] It should be noted that, in some other embodiments, the two metal sheets 31 may also be integrally formed on opposite sides of the PTC heater 3 .

[0111] like Figure 11 As shown, in some embodiments, the two metal sheets 31 may each be provided with a plurality of second axial through-holes 311. The plurality of second axial through-holes 311 may be sequentially spaced along the extension direction of the PTC heater 3. The metal sheets 31 may be sequentially sleeved onto the plurality of straight pipe sections 211 through the plurality of second axial through-holes 311.

[0112] Figure 12 yes Figure 10 A partially enlarged schematic diagram.

[0113] like Figure 12 As shown, in some embodiments, the metal sheet 31 can be a plate-shaped structure. The plane of the plate-shaped structure of the metal sheet 31 can be arranged parallel to and spaced apart from the heat sink fins 22. When the PTC heater 3 is heating, the heat from the PTC heater 3 can be transferred to the metal sheet 31 and then to the surrounding air through the metal sheet 31. This facilitates the transfer of heat from the PTC heater 3 and the metal sheet 31 to the heat sink fins 22 through natural convection, ensuring uniform heating of the heat sink fins 22 and improving the defrosting effect of the evaporator 2.

[0114] In some embodiments, the PTC heater 3 may be a plate-shaped structure, and the plane where the plate-shaped structure of the PTC heater 3 is located may be arranged parallel to the plane where the plate-shaped structure of the metal sheet 31 is located. In this way, the PTC heater 3 and the metal sheet 31 may be arranged parallel to each other on one side of the heat dissipation fin 22.

[0115] In some embodiments, the two metal sheets 31 may be of the same size and may be symmetrically arranged on opposite sides of the PTC heater 3 .

[0116] It should be noted that, in some other embodiments, the sizes of the two metal sheets 31 may be different. In this case, the two metal sheets 31 may be asymmetrically arranged on opposite sides of the PTC heater 3 .

[0117] like Figure 10 and Figure 12 As shown, in some embodiments, the PTC heater 3 and the metal sheet 31 can be disposed between the end plate 23 and the adjacent heat sink fins 22. The PTC heater 3 and the metal sheet 31 can be arranged parallel to and spaced apart from the end plate 23. The PTC heater 3 and the metal sheet 31 can be arranged parallel to and spaced apart from the adjacent heat sink fins 22. In this way, during the assembly process of the evaporator 2, the PTC heater 3 and the metal sheet 31 can be installed and fixed to the end of the straight pipe section 211 and fixed to one side of the heat sink fin 22 before installing the end plate 23, which can facilitate improving the assembly efficiency of the PTC heater 3 and the evaporator 2.

[0118] In some embodiments, when the evaporator 2 performs cooling operation, the PTC heater 3 and the metal sheet 31 can also be used as heat dissipation fins, thereby improving the heat exchange efficiency of the evaporator 2 .

[0119] Figure 13 yes Figure 9 Middle DD section view. Figure 14 yes Figure 10 Another partial enlarged schematic diagram in .

[0120] like Figure 13 and Figure 14 As shown, in some embodiments, the PTC heater 3 and the metal sheet 31 can be arranged between any adjacent heat sink fins 22. The PTC heater 3 and the metal sheet 31 can be arranged parallel to and spaced apart from the adjacent heat sink fins 22. In this way, one opposite side of the PTC heater 3 can be welded to the multiple straight pipe sections 211 of the two groups of straight pipe sections 211 in sequence through the two metal sheets 31, and the other opposite sides of the PTC heater 3 and the metal sheet 31 can be arranged parallel to and spaced apart from the two heat sink fins 22. When the PTC heater 3 is heating, the heat of the PTC heater 3 can be directly transferred to the multiple straight pipe sections 211 of the two groups of straight pipe sections 211 through the two metal sheets 31 in a heat conduction manner, thereby improving the heat transfer efficiency; the heat of the PTC heater 3 can be transferred to the heat sink fins 22 on both sides through the two metal sheets 31 by natural convection, so that the heat sink fins 22 on both sides are heated evenly, thereby improving the defrosting effect of the evaporator 2.

[0121] like Figure 13 and Figure 14As shown, in some embodiments, the PTC heater 3 and the metal sheet 31 can be provided in multiple groups, and multiple PTC heaters 3 and metal sheets 31 can be arranged at intervals in the evaporator 2. The number and position of the PTC heaters 3 and the metal sheet 31 can be adjusted as needed and are not specifically limited here.

[0122] Figure 15 yes Figure 2 Front views of some other embodiments. Figure 16 yes Figure 15 EE section view. Figure 17 yes Figure 16 Middle FF section view.

[0123] like Figure 15 、 Figure 16 and Figure 17 As shown, in some embodiments, the extension direction of the PTC heater 3 can be arranged parallel to the extension direction of the straight pipe section 211. The PTC heater 3 is arranged between any two adjacent straight pipe sections 211. The opposite sides of the PTC heater 3 can be connected to the straight pipe sections 211 in parallel, respectively. That is, one side of the PTC heater 3 can be connected to the straight pipe section 211 in parallel, and the other side of the PTC heater 3 can be connected to the other straight pipe section 211 in parallel. In this way, when the PTC heater 3 is heated, the heat of the PTC heater 3 can be transferred to the straight pipe sections 211 on both sides at the same time, thereby improving the heat transfer efficiency and thereby improving the defrosting effect of the evaporator 2.

[0124] In some embodiments, opposite sides of the PTC heater 3 are respectively welded and fixedly connected to a straight pipe section 211. A weld can be formed between one side of the PTC heater 3 and the side edge of the straight pipe section 211, through which the straight pipe section 211 can be welded and fixed to one side of the PTC heater 3. Another weld can be formed between the other side of the PTC heater 3 and the side edge of the other straight pipe section 211, through which the straight pipe section 211 can be welded and fixed to the other side of the PTC heater 3. In this way, the connection stability between the PTC heater 3 and the two straight pipe sections 211 can be ensured through welding, and the efficiency of heat transfer from the PTC heater 3 to the straight pipe section 211 can be ensured.

[0125] In some embodiments, multiple PTC heaters 3 can be provided. Each of the multiple PTC heaters 3 can be positioned between two adjacent straight pipe sections 211. This allows the multiple PTC heaters 3 to transfer heat to different straight pipe sections 211, improving heat transfer efficiency and thereby enhancing the defrosting effect of the evaporator 2.

[0126] It should be noted that the number of PTC heaters 3 can be adjusted as needed and is not limited here.

[0127] like Figure 16 As shown, in some embodiments, adjacent straight tube sections 211 of the evaporator 2 can be arranged in an inclined manner with vertical spacing. This reduces the overall height of the evaporator 2 and increases the overall width of the evaporator 2 to accommodate spaces in the evaporation chamber 12 of varying heights and widths.

[0128] In some embodiments, the heat sink 22 may have a through hole 222. The through hole 222 may be elongated and extend diagonally. The PTC heater 3 and two adjacent straight tube sections 211 may be arranged through the through hole 222. This facilitates the placement of the PTC heater 3 and two adjacent straight tube sections 211 within the heat sink 22, simplifying installation and improving efficiency.

[0129] It should be noted that, in some embodiments, the inclination angle of the via hole 222 can be adjusted as needed, which is not limited here.

[0130] In some embodiments, the heat dissipation fins 22 may be provided with multiple through holes 222. Two adjacent straight pipe sections 211 may be arranged in one through hole 222. Multiple groups of two adjacent straight pipe sections 211 may be installed and arranged in the multiple through holes 222. Multiple PTC heaters 3 may also be arranged in the multiple through holes 222.

[0131] It should be noted that, in some embodiments, the number of through holes 222 on the heat dissipation fins 22 and the number of PTC heaters 3 in the evaporator 2 can be adjusted as needed, and are not limited here.

[0132] While the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope of the appended claims. Therefore, all changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. A refrigeration device, characterized in that: include: A box body, wherein the box body is configured as an outer shell of the refrigeration device; A box liner, the box liner is arranged in the box body, and a storage chamber is provided in the box liner; an evaporator, disposed in the box, and configured to provide cooling for the storage chamber; The evaporator comprises: The evaporation tube comprises: There are multiple straight pipe sections, and the multiple straight pipe sections are arranged in parallel and at intervals; a curved pipe section, provided between adjacent straight pipe sections, with both ends of the curved pipe section respectively connected to one end of the two adjacent straight pipe sections; There are multiple heat dissipation fins, and the multiple heat dissipation fins are connected to the straight pipe section at intervals; A PTC heater is provided between the plurality of straight pipe sections, and the PTC heater is fixedly connected to the straight pipe sections; When the PTC heater is working, the heat of the PTC heater can be transferred from the connection point to the straight pipe section.

2. The refrigeration equipment according to claim 1, characterized in that The extension direction of the PTC heater is perpendicular to the extension direction of the straight pipe section, and the PTC heater is sequentially connected to a plurality of the straight pipe sections; the PTC heater is arranged parallel to and spaced apart from the heat dissipation fins.

3. The refrigeration equipment according to claim 2, characterized in that The plurality of straight pipe sections include at least two groups, and the two groups of straight pipe sections are arranged in parallel and spaced apart; The PTC heater is arranged in the area between the two groups of straight pipe sections, and opposite sides of the PTC heater are respectively connected to the plurality of straight pipe sections of the two groups of straight pipe sections.

4. The refrigeration equipment according to claim 3, characterized in that The opposite sides of the PTC heater are respectively fixedly connected to the plurality of straight pipe sections of the two groups of straight pipe sections by welding.

5. The refrigeration equipment according to claim 3, characterized in that Two opposite sides of the PTC heater are respectively connected to a metal sheet, and the extending direction of the two metal sheets is consistent with the extending direction of the PTC heater; One of the metal sheets is sleeved on a plurality of the straight pipe sections of one group of the straight pipe sections, and another of the metal sheets is sleeved on a plurality of the straight pipe sections of another group of the straight pipe sections.

6. The refrigeration equipment according to claim 5, characterized in that The two metal sheets are respectively welded and connected to opposite sides of the PTC heater.

7. The refrigeration equipment according to claim 2, characterized in that The PTC heater is arranged at one end of the straight pipe section, and the PTC heater is arranged at one side of the plurality of heat dissipation fins.

8. The refrigeration equipment according to claim 2, wherein: The PTC heater is arranged between any two adjacent heat dissipation fins.

9. The refrigeration equipment according to claim 1, wherein: The extension direction of the PTC heater is arranged parallel to the extension direction of the straight pipe section. The PTC heater is provided between any two adjacent straight pipe sections. The opposite sides of the PTC heater can be respectively connected to one of the straight pipe sections in parallel.

10. The refrigeration equipment according to claim 9, characterized in that The opposite sides of the PTC heater are respectively fixedly connected to one of the straight pipe sections by welding.

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