Aluminum foil heater and refrigerator with same

Abstract

The utility model discloses an aluminum foil heater and a refrigerator with the same. The aluminum foil heater comprises an aluminum foil and a heating wire arranged on at least one surface of the aluminum foil, the heating wire comprises at least two wiring units arranged in the first direction, and each wiring unit comprises a first wiring structure and at least one second wiring structure; the first wiring structure comprises first heating wires and second heating wires, the first heating wires extend in the first direction and are arranged at intervals in the second direction, the second heating wires are connected with the ends of the adjacent first heating wires on one side of the first direction, the included angle between each first heating wire and the first direction is smaller than 45 degrees, and the second direction is perpendicular to the first direction; the second wiring structure extends along a second direction, and an included angle between the second wiring structure and the second direction is less than 45 degrees. According to the utility model, through the structure and combination of the first wiring structure and the second wiring structure, the aluminum foil is effectively supported in the first direction and the second direction, and the problem that wrinkles are easy to appear is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to refrigerator temperature compensation heating technical field, especially a kind of aluminum foil heater and refrigerator with it. BACKGROUND

[0002] When refrigerating, the humid air outside is easy to enter the inside of refrigerator, and condense into frost on the inner wall, and then affect the normal operation of refrigerator. In order to ensure that the refrigerator can continue to work normally, we usually use heater to melt these frost.

[0003] As the key component of defrosting and heat compensation in refrigerator, according to the different structure and material, heater is mainly divided into four categories: steel tube heater, aluminum tube heater, glass tube heater and aluminum foil heater. Among them, the aluminum foil heater is realized by winding and pasting the heating wire with insulating sheath on the aluminum foil. Usually, the heating wire of aluminum foil heater is arranged in the same direction, and such design makes the thermal efficiency higher. However, in the production and attachment process of installing aluminum foil heater to refrigerator, the aluminum foil is easy to wrinkle, which leads to the reduction of the distance between the heating wires or even the extrusion and sticking. In this way, when the heating wire works, it may produce too high temperature, which may even exceed the temperature resistance value of the insulating sheath of heating wire, thereby causing the damage of heater.

[0004] In view of the above problems existing in the aluminum foil heater, it is urgent to provide an improved technical scheme to effectively solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the technical problems existing in prior art, in order to realize the above utility model purposes, the utility model provides a kind of aluminum foil heater and refrigerator with it, and its specific design way is as follows.

[0006] An aluminum foil heater, comprising an aluminum foil, a heating wire arranged on at least one surface of the aluminum foil, the heating wire comprising at least two wiring units arranged in a first direction, the wiring unit comprising a first wiring structure and at least one second wiring structure; the first wiring structure comprises a first heating wire extending in the first direction and arranged in a second direction, a second heating wire connecting the end of the adjacent first heating wire on one side of the first direction, the included angle between the first heating wire and the first direction is less than 45°, and the second direction is perpendicular to the first direction; the second wiring structure extends in the second direction, and the included angle between the second wiring structure and the second direction is less than 45°.

[0007] In an embodiment, the two ends of the first heating wire are respectively connected with two adjacent first heating wires in the second direction.

[0008] In an embodiment, the length of the second wiring structure in the second direction is not less than the distribution range of the first wiring structure.

[0009] In an embodiment, the second wiring structure is located on one side of the first wiring structure in the first direction, or the second wiring structure is located in the middle of the first wiring structure in the first direction.

[0010] In an embodiment, the wiring unit has a first width dimension a in the first direction and a second width dimension b in the second direction, and the first width dimension a is less than the second width dimension b.

[0011] In an embodiment, the ratio of the first width dimension a to the second width dimension b is in the range of 2:3 to 4:5, and the first width dimension a is not greater than 60 mm.

[0012] In an embodiment, in the second direction, the heating wire has at least two rows of wiring units.

[0013] In an embodiment, two adjacent wiring units in the second direction are arranged in alignment in the first direction, or two adjacent wiring units in the second direction are arranged in misalignment in the first direction.

[0014] In an embodiment, adjacent wiring units are connected in series by the first wiring structure of one wiring unit and the second wiring structure of another wiring unit.

[0015] In an embodiment, adjacent wiring units are connected in series by the first wiring structure of one wiring unit and the first wiring structure of another wiring unit.

[0016] In an embodiment, adjacent wiring units are connected in series by the second wiring structure of one wiring unit and the second wiring structure of another wiring unit.

[0017] In an embodiment, one or more first heating wires of part of the first wiring units extend to the position of adjacent first wiring units in the first direction.

[0018] In an embodiment, part of the first heating wires of two first wiring units arranged in the first direction extend towards each other in the first direction and are connected.

[0019] The utility model also provides a refrigerator, it includes box body and the aluminum foil heater of affixing to the box body.

[0020] The aluminium foil heater of the utility model has the advantages that the wiring mode of the heating wire is optimized, the aluminium foil is effectively supported in the first direction and the second direction through the structure and combination of the first wiring structure and the second wiring structure, the aluminium foil of the aluminium foil heater is not easy to be extruded and deformed in the first direction and the second direction, the problem of easy wrinkling is solved, and the probability of the aluminium foil heater being caused by the deformation of the aluminium foil to have excessively high accumulated temperature can be effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only the embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative labor.

[0022] Figure 1 It is a conventional implementation structure schematic diagram of the aluminium foil heater in the prior art.

[0023] Figure 2 It is a first embodiment schematic diagram of the aluminium foil heater of the utility model.

[0024] Figure 3 It is an implementation structure schematic diagram of the wiring unit in the aluminium foil heater of the utility model.

[0025] Figure 4 It is a second embodiment schematic diagram of the aluminium foil heater of the utility model.

[0026] Figure 5 It is a third embodiment schematic diagram of the aluminium foil heater of the utility model.

[0027] Figure 6 It is a fourth embodiment schematic diagram of the aluminium foil heater of the utility model.

[0028] Figure 7 It is a fifth embodiment schematic diagram of the aluminium foil heater of the utility model.

[0029] Figure 8 It is a sixth embodiment schematic diagram of the aluminium foil heater of the utility model.

[0030] Figure 9 It is a seventh embodiment schematic diagram of the aluminium foil heater of the utility model.

[0031] Figure 10 It is an eighth embodiment schematic diagram of the aluminium foil heater of the utility model.

[0032] In the figure, 111' is a straight line part, 200' is an aluminum foil, 300' is a power connection part; 100, 100' is a wiring unit, 101 is a first wiring unit, 102 is a second wiring unit, 11 is a first wiring structure, 111 is a first heating wire, 112 is a second heating wire, 12 is a second wiring structure; 200 is an aluminum foil; 300 is a power connection part, 31 is a connection terminal, and 32 is a connection wire. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0034] Reference Figure 1 It shows a wiring mode of the existing conventional aluminum foil heater, and the heating wires of the aluminum foil heater are arranged in the same direction and spaced apart. More specifically, the heating wires are arranged on the aluminum foil 200' in a single S-shaped wiring mode and connected with the power connection part 300'. As shown in the figure, the S-shaped heating wires include a plurality of parallel and spaced-apart straight line parts 111'.

[0035] For the existing conventional aluminum foil heater, when the wiring area of the heating wires is large, in the process of attaching the whole aluminum foil heater, once the aluminum foil heater is subjected to the pressure F' in the longitudinal direction indicated by the arrow, the aluminum foil 200' will be extruded and deformed under the action of the pressure F' due to insufficient support strength of the aluminum foil heater in the longitudinal direction shown in the figure, so that the spacing between the adjacent straight line parts 111' of the heating wires is reduced, and even the adjacent straight line parts 111' of the heating wires can be in contact with each other, which finally leads to the problem of excessive accumulated temperature of the aluminum foil heater in the use process. Therefore, for the aluminum foil heater related to the existing conventional technology, in order to avoid the problem of subsequent accumulated temperature caused by the folding of the aluminum foil 200', the attachment requirement of the aluminum foil heater is high, and the high attachment requirement will seriously affect the production efficiency. Figure 1 The utility model aims at solving

[0036] the technical problems faced by the aluminum foil heater shown in the figure. Please refer to the aluminum foil heater shown in the figure as the preferred embodiment of the utility model. Figure 1 Figures 2-10 In order to facilitate description, the first direction (such as the left-right direction in the figure) and the second direction (such as the up-down direction in the figure) are defined.

[0037] In order to facilitate description, the first direction (such as the left-right direction in the figure) and the second direction (such as the up-down direction in the figure) are defined. Figure 2 Figure 2 ​​The second direction is perpendicular to the first direction. Described herein as extending in a direction means generally extending in that direction, or having a component of its extension in that direction, or having its two ends spaced apart in that direction, including but not limited to parallel to that direction. For example, described as extending in a first direction means generally extending in the first direction, including parallel to the first direction, and also including having an angle less than 45° with the first direction.

[0038] The aluminum foil heater comprises an aluminum foil and heating wires arranged on at least one surface of the aluminum foil. After the heating wires are electrified to generate heat, the aluminum foil can expand the heating area and ensure the uniformity of heating.

[0039] The heating wire comprises a core wire and an insulating and heat-conducting layer from inside to outside, wherein the core wire can generate heat in an electrified state, and the insulating and heat-conducting layer can be made of a material such as silicone rubber which has insulating and heat-conducting properties and good flexibility. The heating wire can be connected and fixed with the aluminum foil 200 through heat sealing or other processes.

[0040] The heating wire comprises at least two wiring units 100 arranged in a first direction, and each wiring unit 100 comprises a first wiring structure 11 and at least one second wiring structure 12.

[0041] The first wiring structure 11 comprises first heating wires 111 extending in the first direction and spaced apart in a second direction, and second heating wires 112 connected to the ends of the adjacent first heating wires 111 on one end side in the first direction. The shape of the second heating wire 112 can be adjusted as needed, including but not limited to arc-shaped, linear, point-shaped, etc.

[0042] In an embodiment, the angle between the first heating wire 111 and the first direction is less than 45°, preferably 0°-40°, preferably 0°-35°, preferably 0°-30°, preferably 0°-25°, preferably 0°-20°, 0°-15°, preferably 0°-10°, preferably 0°-5°, preferably 0°. The first heating wire 111 generally extends in the first direction and supports the aluminum foil in the first direction.

[0043] In an embodiment, in each wiring unit 100, the plurality of first heating wires 111 of the first wiring structure 11 are equally spaced and parallel, and the heating is uniform. The distance c between the two adjacent first heating wires 111 can be adjusted according to actual needs, which is not limited in the utility model.

[0044] The connection mode of the first heating wire 111 and the second heating wire 112 determines the overall configuration of the first wiring structure 11.

[0045] In an embodiment, two ends of the first heating wire 111 are connected with two first heating wires 111 adjacent in the second direction respectively. When the second heating wire 112 is in an arc shape or a straight line shape, the whole first wiring structure 11 is in an S shape. When the second heating wire 112 is in a dot shape, the whole first wiring structure 11 is in a broken line shape.

[0046] In addition, in combination with Figure 3 As shown in the drawings, the wiring unit 100 has a first width size a in the first direction and a second width size b in the second direction, wherein the first width size a is smaller than the second width size b, that is, the ratio of the first width size a to the second width size b is less than 1. The transverse distance (the distance in the first direction) supported by the second wiring structure 12 in each wiring unit 100 is short, which can effectively prevent the aluminum foil 200 in the unit from being wrinkled.

[0047] In addition, since the first width size a of the wiring unit 100 in the first direction is relatively small, when the overall size of the aluminum foil heater is determined, the number of the second wiring structure 12 in the first direction can be increased, thereby better reducing the probability of the aluminum foil heater being wrinkled in the second direction. When the number of the second wiring structure 12 is greater than 2, all the second wiring structures 12 are symmetrically arranged relative to the central axis in the first direction.

[0048] The inventor has found that, under the premise that the number of the second wiring structure 12 is certain, the smaller the first width size a is, the better the effect of preventing the aluminum foil heating area from being wrinkled in the second direction is.

[0049] In some embodiments, the ratio of the first width size a to the second width size b ranges from 2:3 to 4:5. In a more specific embodiment, the ratio of the first width size a to the second width size b is 3:4. Under this ratio, even if only one second wiring structure 12 is arranged, the aluminum foil heating area can be effectively prevented from being wrinkled in the second direction. If the ratio is too small, the wiring is complex and the wiring cost is high; if the ratio is too large, the anti-wrinkling effect will be poor.

[0050] In some embodiments of the utility model, the first width size a is not greater than 60 mm. Under this size, the wrinkling in the first direction and the second direction can be effectively prevented. More specifically, the first width size a can be set to 55 mm, 50 mm, 45 mm, 40 mm, etc.

[0051] In some embodiments, one or more first heating wires 111 of the first wiring unit 100 extend to the position of the adjacent first wiring unit 100 in the first direction. In this way, the one or more first heating wires 111 extend through the gap between the two adjacent first wiring units 100 in the first direction, thereby strengthening the support of the aluminum foil 200 in the first direction and preventing the occurrence of wrinkles between the two first wiring units 100 in the first direction.

[0052] In some other embodiments, the first heating wires 111 of the two first wiring units 100 arranged in the first direction extend towards each other in the first direction and are connected. The first heating wires 111 connected to each other in the first direction extend through the gap between the two adjacent first wiring units 100 in the first direction, thereby strengthening the support of the aluminum foil 200 in the first direction and preventing the occurrence of wrinkles between the two first wiring units 100 in the first direction.

[0053] The second wiring structure 12 extends in the second direction, and the angle between the second wiring structure 12 and the second direction is less than 45°, preferably 0°-40°, preferably 0°-35°, preferably 0°-30°, preferably 0°-25°, preferably 0°-20°, 0°-15°, preferably 0°-10°, preferably 0°-5°, preferably 0°. The second wiring structure 12 extends in the second direction and can support the aluminum foil in the second direction to prevent wrinkles.

[0054] In the second direction, the length of the second wiring structure 12 is not less than the distribution range of the first wiring structure 11, ensuring that any adjacent first heating wires 111 can be supported and wrinkles can be prevented.

[0055] Specifically, for the aluminum foil heater, the first heating wires 111 in the first wiring structure 11 are relatively easy to approach each other in the second direction. The length of the second wiring structure 12 covers the distribution range of the first wiring structure 11, and the second wiring structure 12 can support all the first heating wires 111 in the wiring unit 100, thereby better reducing the probability of wrinkles in the second direction of the aluminum foil heater.

[0056] The second wiring structure 12 is located on one side of the first wiring structure 11 in the first direction, such as the wiring unit 100 in FIG. 1A; or the second wiring structure 12 is located in the middle of the first wiring structure 11 in the first direction, that is, the second wiring structure 12 extends through the first wiring structure 11, such as the wiring unit 100' in FIG. 1B. In both arrangements, the second wiring structure 12 can improve the support strength of the aluminum foil in the second direction. Figure 2 Figure 2 The second wiring structure 12 is located on one side of the first wiring structure 11 in the first direction, such as the wiring unit 100 in FIG. 1A; or the second wiring structure 12 is located in the middle of the first wiring structure 11 in the first direction, that is, the second wiring structure 12 extends through the first wiring structure 11, such as the wiring unit 100' in FIG. 1B. In both arrangements, the second wiring structure 12 can improve the support strength of the aluminum foil in the second direction. ​

[0057] In some embodiments, the heating wire has only one row of the wiring units 100, and a specific implementation structure is shown in FIG. 4.

[0058] In some embodiments, in the second direction, the heating wire has at least two rows of the wiring units 100, as shown in FIG. 5. Figure 2 、 Figures 5-10 Based on the multi-row arrangement, a large-area wiring can be achieved in the case of the wiring unit 100 size, thereby meeting different application scenarios.

[0059] The two wiring units 100 adjacent in the second direction are arranged in alignment in the first direction. Correspondingly, the two wiring units 100 adjacent in the second direction are also arranged in alignment in the first direction, so that a heating wire with a relatively regular shape can be formed, such as a heating wire with a rectangular shape formed by the outer edges of the heating wire, as shown in FIG. 6. Figure 2 、 Figure 7 and Figure 8

[0060] Alternatively, the two wiring units 100 adjacent in the second direction are arranged in misalignment in the first direction. Correspondingly, the edges of the two wiring units 100 adjacent in the second direction are also arranged in misalignment in the first direction, and the second wiring structure 12 in the two rows of the wiring units 100 adjacent in the first direction will form a misalignment, thereby making the second wiring structure 12 more uniformly support the aluminum foil 200 in the second direction, and better reducing the probability of deformation of the aluminum foil 200 after being subjected to external force. As shown in FIG. 7. Figure 5 、 Figure 6 、 Figure 9 and Figure 10

[0061] In addition, in the embodiments of the utility model with multiple rows of the wiring units 100, the distance between the two wiring units 100 adjacent in the second direction is consistent with the distance c between the two first heating wires 111 adjacent in the second direction, and the heating uniformity is good. For example, all the first heating wires 111 in the two wiring units 100 adjacent in the second direction are distributed at equal intervals, so that the heating wire has a more uniform heating effect.

[0062] ​​Various structures can be formed based on the arrangement and connection method of the wiring unit 100 and its first wiring structure 11 and second wiring structure 12. In any arrangement, adjacent wiring units 100 are connected in series with the second wiring structure 12 of another wiring unit 100 through the first wiring structure 11 of one wiring unit 100; or adjacent wiring units 100 are connected in series with the first wiring structure 11 of one wiring unit 100 through the first wiring structure 12 of another wiring unit 100; or adjacent wiring units 100 are connected in series with the second wiring structure 12 of one wiring unit 100 through the second wiring structure 12 of another wiring unit 100. Therefore, the entire heating wire is connected in series as a whole, which facilitates overall power supply.

[0063] The aluminum foil heater may further include an electrically connected portion 300 electrically connected to the heating wire. (Reference) Figure 2 As shown, the power-contacting connection 300 includes a connection terminal 31 and a connection wire 32. The connection terminal 31 is used to connect to an external power source; the connection wire 32 connects the heating wire and the connection terminal 31 to supply current to the heating wire.

[0064] To better understand this utility model, the following will be combined with Figures 2-10 This paper provides a detailed description of several aluminum foil heaters.

[0065] like Figure 2 , Figure 3 The image shown is an aluminum foil heater according to the first embodiment of this utility model. (In conjunction with...) Figure 3 As shown, the first heating wires 111 constituting the first wiring structure 11 are straight, the first heating wires 111 are parallel to the first direction and are distributed at intervals in the second direction, the second heating wires 112 are arc-shaped, and the entire first wiring structure 11 is S-shaped.

[0066] Each first wiring structure 11 corresponds to one second wiring structure 12, and the second wiring structure 12 is located on one side of the first wiring structure 11 in the first direction. Furthermore, in all wiring units 100, the second wiring structure 12 is located on the same side of the first wiring structure 11 in the first direction. The entire wiring structure is neat and concise, and there is a second wiring structure 12 between every two adjacent first wiring structures 11 in the first direction. The first wiring structure 11 in the middle is supported by the second wiring structures 12 on both sides, resulting in better wrinkle prevention.

[0067] In the second direction, the heating wire has two rows of wiring units 100. The two rows of wiring units 100 in this embodiment are symmetrically arranged in the illustrated orientation. In this embodiment, the connection points of the connecting wires 32 and the heating wire are located at the position where the symmetry axis intersects with the lateral side edge of the heating wire, and the connecting wires 32 connect the two longitudinally adjacent wiring units 100 to form a loop of the heating wire.

[0068] Please refer to Figure 4 illustrated, the difference from Figure 2 is that the heating wire has only one row of wiring units 100, and each adjacent wiring unit 100 is connected in series by the first heating wire 111 of one wiring unit 100 and the second wiring structure 12 of another wiring unit 100.

[0069] The connection points of the connecting wires 32 and the heating wire are located at the wiring unit 100 on one end side in the first direction, and are connected with the first heating wire 111 of the wiring unit 100 on the end side and the second wiring structure 12 of the wiring unit 100 on the other end side to form a loop of the heating wire.

[0070] Please refer to Figure 5 illustrated, the difference from Figure 2 is that the two rows of wiring units 100 are not aligned in the first direction.

[0071] Please refer to Figure 6 illustrated, which is obtained by changing the connection position of the power connection part 300 based on the new aluminum foil heater illustrated in Figure 5 . Specifically, Figure 5 in the embodiment illustrated in Figure 6 , the connecting wires 32 connect the first wiring structure 11 and the second wiring structure 12 of the same wiring unit 100 to form a loop of the heating wire.

[0072] It can be understood that in the specific embodiment illustrated in Figure 6 , the wiring unit 100 includes two different forms: the first wiring unit 101 having a first form and the second wiring unit 102 having a second form. Among them, in the first wiring unit 101, the first wiring structure 11 and the second wiring structure 12 are continuously arranged, and in the second wiring unit 102, the first wiring structure 11 and the second wiring structure 12 are separately arranged due to the need to be connected with the power connection part 300.

[0073] Referring to Figure 7 illustrated, this specific embodiment is obtained by modifying the embodiment illustrated in Figure 2 . Specifically, Figure 7 in the embodiment illustrated in Figure 2The heating wire layout in FIG. 1 is symmetrically copied along a horizontal line below its lower side edge, which constitutes the axis of symmetry of the heating wire layout in FIG. 1. In this embodiment, two adjacent rows of the wiring units 100 are aligned in the first direction. Figure 7 The heating wire layout in FIG. 1 is symmetrically copied along a horizontal line below its lower side edge, which constitutes the axis of symmetry of the heating wire layout in FIG. 1. In this embodiment, two adjacent rows of the wiring units 100 are aligned in the first direction.

[0074] Referring to FIG. 1, this embodiment is also based on the embodiment shown in FIG. 1. Figure 8 Figure 2 Referring to FIG. 1, this embodiment is also based on the embodiment shown in FIG. 1. Figure 8 The heating wire layout in FIG. 1 is symmetrically copied along a horizontal line below its lower side edge, which constitutes the axis of symmetry of the heating wire layout in FIG. 1. In this embodiment, two adjacent rows of the wiring units 100 are aligned in the first direction. Figure 2 The heating wire layout in FIG. 1 is symmetrically copied along a horizontal line below its lower side edge, which constitutes the axis of symmetry of the heating wire layout in FIG. 1. In this embodiment, two adjacent rows of the wiring units 100 are aligned in the first direction. Figure 8 The heating wire layout in FIG. 1 is symmetrically copied along a horizontal line below its lower side edge, which constitutes the axis of symmetry of the heating wire layout in FIG. 1. In this embodiment, two adjacent rows of the wiring units 100 are aligned in the first direction.

[0075] Referring to FIG. 1, this embodiment is also based on the embodiment shown in FIG. 1. Figure 9 Referring to FIG. 1, this embodiment is also based on the embodiment shown in FIG. 1. Figure 5 The heating wire layout in FIG. 1 is symmetrically copied along a horizontal line below its lower side edge, which constitutes the axis of symmetry of the heating wire layout in FIG. 1. In this embodiment, two adjacent rows of the wiring units 100 are aligned in the first direction. Figure 9 The heating wire layout in FIG. 1 is symmetrically copied along a horizontal line below its lower side edge, which constitutes the axis of symmetry of the heating wire layout in FIG. 1. In this embodiment, two adjacent rows of the wiring units 100 are aligned in the first direction. Figure 5 The heating wire layout in FIG. 1 is symmetrically copied along a horizontal line below its lower side edge, which constitutes the axis of symmetry of the heating wire layout in FIG. 1. In this embodiment, two adjacent rows of the wiring units 100 are aligned in the first direction. Figure 9 The heating wire layout in FIG. 1 is symmetrically copied along a horizontal line below its lower side edge, which constitutes the axis of symmetry of the heating wire layout in FIG. 1. In this embodiment, two adjacent rows of the wiring units 100 are aligned in the first direction.

[0076] Referring to FIG. 1, this embodiment is also based on the embodiment shown in FIG. 1. Figure 10 Referring to FIG. 1, this embodiment is also based on the embodiment shown in FIG. 1. Figure 5 The heating wire layout in FIG. 1 is symmetrically copied along a horizontal line below its lower side edge, which constitutes the axis of symmetry of the heating wire layout in FIG. 1. In this embodiment, two adjacent rows of the wiring units 100 are aligned in the first direction.

[0077] One or more first heating wires 111 of some of the first wiring units 100 extend in the first direction to the position of the adjacent first wiring units 100, which can strengthen the support of the aluminum foil 200 in the first direction and prevent wrinkles from occurring between the two first wiring units 100 in the first direction. Here, "adjacent" is not strictly limited to being arranged in the first direction, but can also be staggered in the second direction. For example Figure 10 The two first heating wires 111 at the lower end of the first wiring unit 100 on the right side of the middle row extend to the upper side of the first wiring unit 100 on the right side of the middle row.

[0078] ​In addition, the first heating wires 111 of the two first wiring units 100 arranged in the first direction extend towards each other in the first direction and are connected, which can strengthen the support of the aluminum foil 200 in the first direction and prevent wrinkles from occurring between the two first wiring units 100 in the first direction. Here, "arranged in the first direction" does not mean arranged strictly in the first direction, but also means arranged with a displacement in the second direction. For example Figure 10 The first wiring unit 100 on the left side of the upper row has one first heating wire 111 extending to the left at the lower end, and the first wiring unit 100 on the left side of the middle row has one first heating wire 111 extending to the right at the upper end and connected with the first heating wire 111 extending to the left.

[0079] The utility model discloses a plurality of heating wire implementation structure's purpose is better understanding the utility model, and not for limiting the implementation structure of the utility model. The person skilled in the art can make adaptive adjustment to the shape, connection mode, layout of heating wire according to actual demand. In the specific implementation process, the connection position of the power connection part 300 and the heating wire can also be adaptively adjusted according to requirements.

[0080] The utility model also provides a kind of refrigerator, it includes cabinet and the aluminum foil heater attached to the cabinet, the aluminum foil heater uses above-mentioned any one. In the specific implementation process, the aluminum foil heater can be attached to the position of the air duct or lining of refrigerator, which is prone to form condensation or frost.

[0081] In the specific application scenario of attaching the aluminum foil heater to the refrigerator cabinet, since the first wiring structure 11 includes a plurality of first heating wires 111, support is formed in the first direction, and the aluminum foil heater is not prone to deformation under pressure in the first direction.

[0082] Since the second wiring structure 12 can form support in the second direction, the aluminum foil heater is not prone to deformation under pressure in the second direction. For details, refer to Figure 2 When the aluminum foil heater is subjected to pressure F in the longitudinal direction, the second wiring structure 12 between the two adjacent first wiring structures 11 in the first direction will form support in the second direction, which can prevent the aluminum foil 200 of the aluminum foil heater from being deformed under pressure in the second direction and causing wrinkles. This can avoid the problem of reduced spacing and pressure sticking of the first heating wires 111 in the first wiring structure 11 during attachment, thereby effectively reducing the probability of excessive temperature accumulation of the aluminum foil heater due to deformation of the aluminum foil.

[0083] Since the aluminum foil heater according to the utility model is not prone to deformation, the attachment requirements for the aluminum foil heater are relatively low, and the lower attachment requirements can improve production efficiency and are more suitable for mass production.

[0084] In summary, the aluminum foil heater optimizes the wiring mode of the heating wire, specifically through the structure and combination of the first wiring structure 11 and the second wiring structure 12, effectively supports the aluminum foil 200 in the first direction and the second direction, so that the aluminum foil 200 of the aluminum foil heater is not easy to be extruded and deformed in the first direction and the second direction, solves the problem of easy wrinkles, and can effectively reduce the probability of the aluminum foil heater due to the deformation of the aluminum foil.

[0085] It should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

[0086] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present application, and are not used to limit the protection scope of the present application. Any equivalent embodiments or changes made without departing from the spirit of the present application should be included in the protection scope of the present application.

Claims

1. An aluminum foil heater comprising an aluminum foil (200), a heating wire provided on at least one surface of the aluminum foil (200), characterized in that, The heating wire comprises at least two wiring units (100) arranged along a first direction, each wiring unit (100) comprising a first wiring structure (11) and at least one second wiring structure (12); the first wiring structure (11) comprises first heating wires (111) extending along the first direction and arranged at intervals along a second direction, and second heating wires (112) connected to the ends of the adjacent first heating wires (111) on one side of the first direction, the angle between the first heating wire (111) and the first direction being less than 45°, and the second direction being perpendicular to the first direction; the second wiring structure (12) extends along the second direction, and the angle between the second wiring structure (12) and the second direction is less than 45°.

2. The aluminum foil heater of claim 1, wherein, The two ends of the first heating wire (111) are respectively connected to two adjacent first heating wires (111) in the second direction.

3. The aluminum foil heater of claim 1, wherein, In the second direction, the length of the second wiring structure (12) is not less than the distribution range of the first wiring structure (11).

4. The aluminum foil heater of claim 1, wherein, The second wiring structure (12) is located on one side of the first wiring structure (11) along the first direction; or the second wiring structure (12) is located in the middle of the first wiring structure (11) along the first direction.

5. The aluminum foil heater of claim 1, wherein, The wiring unit (100) has a first width dimension (a) in the first direction and a second width dimension (b) in the second direction, and the first width dimension (a) is less than the second width dimension (b).

6. The aluminum foil heater of claim 5, wherein, The ratio of the first width dimension (a) to the second width dimension (b) is in the range of 2:3 to 4:5; and the first width dimension (a) is not greater than 60 mm.

7. The aluminum foil heater of claim 1, wherein, In the second direction, the heating wire has at least two rows of wiring units (100).

8. The aluminum foil heater of claim 7, wherein, In the second direction, two adjacent wiring units (100) are arranged in alignment in the first direction, or In the second direction, two adjacent wiring units (100) are arranged in misalignment in the first direction.

9. The aluminum foil heater according to any one of claims 1 to 8, characterized by Adjacent wiring units (100) are connected in series through the first wiring structure (11) of one wiring unit (100) and the second wiring structure (12) of another wiring unit (100); or Adjacent wiring units (100) are connected in series through the first wiring structure (11) of one wiring unit (100) and the first wiring structure (11) of another wiring unit (100); or Adjacent wiring units (100) are connected in series through the second wiring structure (12) of one wiring unit (100) and the second wiring structure (12) of another wiring unit (100); or One or more first heating wires (111) of part of the first wiring unit (100) extend to the position of the adjacent first wiring unit (100) along the first direction; or Part of the first heating wires (111) of two first wiring units (100) arranged in the first direction extend towards each other along the first direction and are connected.

10. A refrigerator characterized by comprising: The aluminum foil heater comprises a box body and an aluminum foil heater attached to the box body and as claimed in any one of claims 1 to 9.

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