Wearable refrigeration device

Abstract

The utility model relates to wearable refrigeration device, this wearable refrigeration device includes the shell, sets up in the air supply subassembly and heat exchange subassembly of shell, the heat exchange subassembly includes thermoelectric element and with the heat exchange fin of thermoelectric element heat coupling, the thermoelectric element has the heat production face, the heat exchange fin includes the first part and the second part of interconnection, the first part is pasted in the heat production face, the second part extends from the first part outward, the air supply subassembly has the air outlet, the air outlet is towards the first part of heat exchange fin arrangement, the second part is located the side of the first part away from the air outlet.

Description

Technical Field

[0001] This utility model relates to the field of wearable device technology, and in particular to a wearable cooling device. Background Technology

[0002] Existing neckband-style cooling devices typically use thermoelectric elements (TECs) for cooling, and form a hot and cold air circulation structure through heat dissipation fins and a fan. To improve cooling performance, current technologies often increase the fin area or increase the power of the thermoelectric element, but this leads to an increase in device size, weight, and battery life, which is detrimental to portability and wearing comfort. Utility Model Content

[0003] In view of this, the present invention provides a wearable cooling device to solve the problems of wearable cooling devices in the prior art.

[0004] To achieve one, some, or all of the above objectives, or other objectives, this utility model proposes:

[0005] Wearable cooling devices include:

[0006] Housing, air supply components and heat exchange components disposed within the housing;

[0007] The heat exchange assembly includes a thermoelectric element and heat exchange fins thermally coupled to the thermoelectric element, wherein the thermoelectric element has a heat-generating surface;

[0008] The heat exchange fins include a first part and a second part that are connected to each other. The first part is attached to the heat-generating surface, and the second part extends outward from the first part.

[0009] The air supply assembly has an air outlet, which is arranged toward a first portion of the heat exchange fins, and a second portion is located on the side of the first portion away from the air outlet.

[0010] In some embodiments, the air supply assembly includes a fan and a flow guide channel, the flow guide channel having an air inlet and an air outlet, the air inlet being in communication with the airflow on the outlet side of the fan.

[0011] In some embodiments, the flow guiding channel includes two channels, the fan is provided with two channels, and the two flow guiding channels are isolated from each other; the air inlet of each flow guiding channel corresponds one-to-one with the air outlet of each fan, and the air outlet of each flow guiding channel is arranged adjacent to the first part of the heat exchange fins.

[0012] In some embodiments, the housing has a length direction, a width direction, and a thickness direction;

[0013] The channels within the heat exchange fins extend along the width direction;

[0014] The flow channel extends along the length direction, and its air outlet is arranged along the width direction toward the first part of the heat exchange fins.

[0015] The thermoelectric element and the heat exchange fins are arranged in a superimposed manner along the thickness direction;

[0016] The first part and the second part are distributed sequentially along the width direction, and the second part is disposed away from the air outlet in the width direction.

[0017] In some embodiments, the flow guiding channel includes two channels, and the fan is provided with two channels; the two flow guiding channels are isolated from each other; the air inlet of each flow guiding channel corresponds one-to-one with the air outlet of each fan, and the air outlet of each flow guiding channel is arranged adjacent to the first part of the heat exchange fins.

[0018] The two fans are spaced apart along the length direction; the heat exchange assembly is located between the two fans along the length direction.

[0019] In some embodiments, the air supply assembly further includes a first flow guiding member, which is disposed corresponding to the flow guiding channel;

[0020] The first flow guiding member constitutes part of the wall of the air outlet, and the first flow guiding member is located on the side of the air outlet away from the air inlet;

[0021] The first flow guiding component includes a first flow guiding surface, which extends from the side near the air inlet toward the heat exchange fins.

[0022] In some embodiments, a first recess is provided on the first guide surface, and the first recess faces the inside of the guide channel.

[0023] In some embodiments, two first flow guiding members are provided, the two first flow guiding members are symmetrically arranged along the length direction and are centrally located relative to the heat exchange fins in the length direction, and the first flow guiding surfaces of the two first flow guiding members are oriented in opposite directions.

[0024] In some embodiments, the air supply assembly further includes a second flow guide member disposed within the flow guide channel; the second flow guide member is disposed at the center of the air outlet in the length direction;

[0025] The second flow guiding member includes a second flow guiding surface, which extends from the side near the air inlet toward the heat exchange fins; and / or, the first flow guiding surface has a first recess extending toward the interior of the flow guiding channel, and the second flow guiding surface has a second recess, the orientation of the second recess being the same as the orientation of the first recess.

[0026] In some embodiments, the flow channel has an expansion section at the air inlet, and the expansion section expands outward in a direction away from the fan.

[0027] In some embodiments, the housing has a skin-contact portion, and the housing has a heat dissipation vent corresponding to the second portion, with the heat dissipation vent located on the side of the housing away from the skin-contact portion.

[0028] In some embodiments, the housing is further provided with an air outlet channel, which is distributed and isolated from the flow guide channel in the thickness direction;

[0029] One end of the air outlet duct is connected to the airflow on the air outlet side of the fan, and the other end is provided with a cold air outlet; the cold air outlet is located on the outer casing.

[0030] In some embodiments, a partition is further provided inside the housing, the partition being used to isolate the airflow channel from the air outlet channel;

[0031] The side of the partition facing the airflow channel is a flow-expanding surface, which is inclined in the thickness direction from the end near the air inlet to the end near the air outlet.

[0032] In some embodiments, the housing includes a fixing plate disposed on the outer periphery of the heat exchange fins, the fixing plate extending along the width direction; the housing also includes a side plate surrounding the circumferential outer side of the fan; the housing also includes a first baffle and a second baffle, the first baffle and the second baffle extending along the length direction, and the first baffle and the second baffle forming part of the wall of the flow guiding channel; the first baffle connects the fixing plate and the side plate, and the second baffle is disposed away from the heat exchange fins relative to the first baffle.

[0033] Implementing the embodiments of this utility model will have the following beneficial effects:

[0034] By adopting the aforementioned wearable cooling device, without increasing the area of ​​the heat exchange fins or the power of the thermoelectric elements, the device achieves orderly heat conduction and zoned heat dissipation by rationally configuring the relative positions of the heat exchange fins and the air outlet of the air supply component. This allows the airflow to directly act on the first part corresponding to the heat-generating surface after passing through the air outlet, and then continuously flow along the direction of the heat exchange fins to the second part. Compared to the traditional design where the airflow first passes through a lower temperature area before contacting the heat source, this wearable cooling device effectively avoids the problem of low utilization of the heat exchange fin's working area, ensuring that the airflow always flows along a high-temperature gradient path. This improves the overall heat exchange efficiency and cooling response speed, achieving the effect of improving cooling performance within a limited volume. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 Schematic diagram of the structure of the wearable cooling device in some embodiments Figure 1 ;

[0037] Figure 2 Schematic diagram of the structure of the wearable cooling device in some embodiments Figure 2 ;

[0038] Figure 3 This is an exploded assembly diagram of a wearable cooling device in some embodiments;

[0039] Figure 4 This is an internal plan view of the wearable cooling device in some embodiments;

[0040] Figure 5 This is a three-dimensional structural diagram of the internal structure of the wearable cooling device in some embodiments;

[0041] Figure 6 A perspective sectional view of a wearable cooling device in some embodiments;

[0042] in:

[0043] 1-Outer shell; 1a-Fixing plate; 1b-Side plate; 1c-First baffle; 1d-Second baffle; 10-Skin-contact part; 11-Guide channel; 110-Air inlet; 111-Air outlet; 112-Expansion section; 12-Heat dissipation vent; 13-Baffle; 130-Airflow expansion surface; 14-Air outlet channel; 140-Cold air outlet; 15-Buffer zone; 17-Front shell; 18-Rear shell; 19-Bracket;

[0044] 2-Air supply assembly; 20-Fan; 21-First flow guide component; 210-First flow guide surface; 22-Second flow guide component; 220-Second flow guide surface;

[0045] 3-Heat exchange assembly; 30-Thermoelectric element; 300-Heat generation surface; 31-Heat exchange fins; 311-First part; 312-Second part. Detailed Implementation

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0047] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0048] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0049] See appendix Figure 1 - Appendix Figure 6This utility model provides a wearable cooling device, which includes a housing 1, an air supply assembly 2 and a heat exchange assembly 3 disposed within the housing 1; the housing 1 has a skin-contact portion 10; the heat exchange assembly 3 includes a thermoelectric element 30 and heat exchange fins 31 thermally coupled to the thermoelectric element 30, the thermoelectric element 30 having a heat-generating surface 300. The heat exchange fins 31 include a first portion 311 and a second portion 312 connected to each other, the first portion 311 being attached to the heat-generating surface 300, and the second portion 312 extending outward from the first portion 311; the air supply assembly 2 has an air outlet 111, the air outlet 111 being arranged towards the first portion 311 of the heat exchange fins 31, and the second portion 312 being located on the side of the first portion 311 away from the air outlet 111.

[0050] Specifically, the outer shell 1 can adopt a structure with a hollow cavity, and the outer shell 1 has, for example, a hollow cavity. Figure 3 The diagram shows the length direction X, width direction Y, and thickness direction Z. The outer shell 1 bends inward at both ends in the length direction X, roughly forming an arc shape. Straps or other structures can be provided at both ends of the outer shell 1 to facilitate wearing the device to a designated area on the user's body. The outer shell 1 includes a front shell 17, a rear shell 18, and a bracket 19. The front shell 17 and rear shell 18 interlock to form an internal cavity, providing installation space for the air supply assembly 2 and the heat exchange assembly 3. The bracket 19 is located within the internal cavity, providing installation support for the air supply assembly 2, heat exchange assembly 3, and other structures. The outer shell 1 has a skin-contact portion 10, which is specifically located on the rear shell 18. The skin-contact portion 10 is used to transfer heat to the human body. For example, the exposed side of the skin-contact portion 10 is used to conform to the user's neck, waist, legs, and other areas. The skin-contact portion 10 is usually made of a material with good thermal conductivity and skin-friendly properties, such as aluminum alloy, magnesium-aluminum alloy, or plastic parts with thermally conductive coatings, to achieve rapid heat conduction and temperature difference transfer with the user's skin; or the skin-contact portion 10 can be set as an air outlet to deliver cold air to the human body to complete temperature transfer. The thermoelectric element 30 is generally a semiconductor cooling structure such as TEC. The thermoelectric element 30 is located inside the outer shell 1, with a cooling surface and a heat-generating surface 300 formed on its opposite sides. The cooling surface faces the skin-contact portion 10, which lowers the overall temperature of the skin-contact portion 10, allowing the user to directly feel the cooling effect through the skin-contact portion 10; the heat-generating surface 300 faces away from the skin-contact portion 10 and serves as a heat release end, which is tightly fitted with the heat exchange fins 31. In other embodiments, the cooling surface of the thermoelectric element 30 corresponds to the air vent blowing towards the human skin, and the heat exchange fins 31 are also attached to the heat-generating surface 200. The position of the heat-generating surface 200 changes according to the position of the cooling surface and is not limited to one.

[0051] The heat exchange fins 31 can be made of copper, aluminum, or composite metal materials, and consist of a first part 311 and a second part 312 connected to each other. The heat dissipation channel of the heat exchange fins 31 flows from the first part 311 to the second part 312. Specifically, the first part 311 is directly thermally coupled to the heat-generating surface 300 of the thermoelectric element 30, which is used to absorb the heat transferred from the heat-generating surface 300 in a timely manner to form a heat fin. The second part 312 extends away from the air outlet 111 and does not directly contact the heat-generating surface 300, forming a cold fin, which is used to receive the heat flowing from the first part 311 (heat fin) and exchange heat to complete the heat dissipation. The air outlet 111 of the air supply assembly 2 is located near the first part 311 of the heat exchange fins 31, so that the airflow first contacts the first part 311 and carries away the heat when it passes through, and then flows along the extension direction of the heat exchange fins 31 through the second part 312, realizing the continuity and efficiency of the heat exchange path. The outer casing 1 may also be provided with a heat dissipation port 12 that communicates with the airflow of the second part 312, so as to discharge the heat-exchanged airflow to the external environment and form a heat circulation loop.

[0052] In summary, this wearable cooling device, without increasing the area of ​​the heat exchange fins 31 or the power of the thermoelectric element 30, achieves orderly heat conduction and zoned heat dissipation by rationally configuring the relative positional relationship between the heat exchange fins 31 and the air outlet 111 of the air supply component 2. This allows the airflow to directly act on the first part 311 corresponding to the heat-generating surface 300 after passing through the air outlet 111, and then continuously flow along the direction of the heat exchange fins 31 to the second part 312. Compared with the traditional design where the airflow passes through a lower temperature area before contacting the heat source, this wearable cooling device effectively avoids the problem of low utilization of the heat exchange fins 31's working area, ensuring that the airflow always flows along a high-temperature gradient path, thereby improving the overall heat exchange efficiency and cooling response speed, and achieving the effect of improving cooling performance within a limited volume.

[0053] Reference Figure 4 and Figure 5In some embodiments, the air supply assembly 2 includes a fan 20 and a flow channel 11, the flow channel 11 having an air inlet 110 and an air outlet 111, the air inlet 110 being connected to the airflow on the outlet side of the fan 20. Specifically, to ensure that the heat absorbed by the first part 311 can flow to the second part 312, a guide channel 11 is formed between the fan 20 and the heat exchange component 3. The air inlet 110 of the guide channel 11 is connected to the airflow on the air outlet side of the fan 20, ensuring that the airflow can smoothly enter the interior. After the airflow of the fan 20 is integrated through the guide channel 11, it is delivered to the first part 311 through its air outlet 110, so that the airflow generated by the fan 20 can effectively and stably enter the first part 311 and be delivered to the second part 312 along the extension direction of the heat exchange fins 31, completing the heat exchange work of the first part 311. To improve the airflow stability, the guide channel 11 can be a straight and slender structure or a slightly curved slender structure with a smooth inner wall to reduce turbulence and pressure drop. The fan 20 can be an axial fan, a centrifugal fan, or a brushless DC fan, etc., which can be matched according to the overall structural layout. In other embodiments, the air outlet side of the fan 20 is the air outlet 110, and there is no need to set up the flow guide channel 11. The air outlet 110 is directly connected to the first part 311.

[0054] Reference Figure 4 and Figure 5 In some embodiments, the flow channel 11 includes two, the fan 20 is provided with two, and the two flow channels 11 are isolated from each other; the air inlet 110 of each flow channel 11 is connected to the airflow on the air outlet side of each fan 20, and the air outlet 111 of each flow channel 11 is arranged adjacent to the first part 311 of the heat exchange fin 31.

[0055] Specifically, the housing 1 contains two independent airflow channels 11, which are spatially isolated from each other and can be symmetrically arranged along the length (X) or width (Y) of the housing 1. The air inlet 110 of each airflow channel 11 is connected to the air outlet of each fan 20, ensuring that both channels can independently receive stable airflow input. The air outlets 111 of the two airflow channels 11 are respectively arranged facing the first portion 311 of the heat exchange fins 31, allowing airflow from different channels to simultaneously act on different areas of the heat exchange fins 31. The design of the two airflow channels 11 makes the airflow path clearer, avoiding the problem of uneven airflow distribution in complex spaces caused by a single air duct. The position, angle, or channel shape of the two airflow channels 11 can be adjusted according to the spatial layout of the internal structure of the housing 1, thereby flexibly adjusting the relative angle and direction of action between the airflow and the heat exchange fins 31 without changing the thermoelectric element 30 and the main structure of the fins. For example, the air outlet directions of the two guide channels 11 can be slightly different according to the arrangement direction of the heat exchange fins 31, so as to ensure that the airflow fully covers the fin surface and improves the heat exchange efficiency.

[0056] In some embodiments, two fans 20 are spaced apart along the length direction X; the flow channel 11 extends along the length direction X, the channel in the heat exchange fin 31 extends along the width direction Y, and its air outlet 111 is arranged along the width direction Y toward the first part 311 of the heat exchange fin 31, so that the air blown out from the air outlet 111 directly acts on the channel of the first part 311; the heat exchange assembly 3 is located between the two fans 20 in the length direction X, and the thermoelectric element 30 and the heat exchange fin 31 are stacked together along the thickness direction Z; the first part 311 and the second part 312 are distributed sequentially along the width direction Y, and the second part 312 is disposed away from the air outlet 111 in the width direction Y.

[0057] Specifically, in order to achieve efficient heat dissipation within a limited space and to clearly illustrate the positions of the various structures inside the casing 1, the casing 1 has the following three directions, and its length direction X can be understood as follows: Figure 4 As shown, the left and right directions, and the width direction Y are as follows: Figure 4 As shown, the vertical direction and the thickness direction Z are as follows: Figure 1 and Figure 2 The front-to-back direction is shown. The air supply assembly 2 is equipped with two fans 20, which are distributed and symmetrically arranged at intervals along the length direction X. The two fans 20 correspond to the two guide channels 11 inside the outer casing 1, so that each guide channel 11 can independently obtain an airflow drive source. This arrangement allows the airflow generated by the fans 20 to form a uniform flow distribution in the length direction X. The two fans 20 can be driven by the same control circuit or can be independently speed-adjusted to adapt to different cooling modes. The guide channel 11 extends along the length direction X, forming a main airflow passage that runs through the left and right sides. Its air outlet 111 is set along the width direction Y towards the first part 311 of the heat exchange fins 31, so that the airflow directly acts on the first part 311 (heat fins) of the heat exchange fins 31 after passing through the guide channel 11. The heat exchange assembly 3 is located between the two fans 20 in the length direction X, in the airflow confluence area, so that the airflow from both sides passes evenly through the heat exchange fins 31, improving the overall heat exchange coverage. The thermoelectric element 30 and heat exchange fins 31 are stacked along the thickness direction Z. The heat-generating surface 300 of the thermoelectric element 30 is bonded to the first part 311 of the heat exchange fins 31, forming a heat conduction path. The first part 311 and the second part 312 of the heat exchange fins 31 are distributed sequentially along the width direction Y. This can be understood as the internal heat dissipation channel extending along the width direction Y, allowing airflow to sequentially sweep across the first part 311 and the second part 312 of the heat exchange fins 31 along the width direction Y, achieving sequential heat exchange from the hot zone to the cold zone. Through the above arrangement, a compact structure of "air supply in the length direction X, airflow guidance in the width direction Y, and stacking in the thickness direction Z" is formed inside the outer casing 1, effectively improving the heat exchange efficiency of the device.

[0058] In addition, the two fans 20 are arranged opposite each other on both sides of the heat exchange component 3, so that the air pressure distribution is more balanced and the phenomenon of excessive airflow on one side and insufficient airflow on the other side in the traditional single fan 20 structure is avoided, thereby improving the temperature distribution uniformity of the heat exchange fins 31.

[0059] Reference Figure 3 , Figure 4 and Figure 5 In some embodiments, the air supply assembly 2 further includes a first flow guide member 21, which is disposed corresponding to the flow guide channel 11; the first flow guide member 21 constitutes part of the wall of the air outlet 111, and the first flow guide member 211 is located on the side of the air outlet 111 away from the air inlet 110; the first flow guide member 21 includes a first flow guide surface 210, which extends from the side near the air inlet 110 toward the direction near the heat exchange fins 31.

[0060] Specifically, the first flow guiding member 21 is located at the end region of the flow guiding channel 11, that is, on the side of the air outlet 111 away from the air inlet 110. This location is precisely in the transition region where the airflow changes from the length direction X to the width direction Y, which is an area prone to vortex formation. Therefore, the first flow guiding surface 210 extends from the side near the air inlet 110 toward the direction near the heat exchange fins 31, forming an arc-shaped flow guiding surface to smoothly guide the airflow. The first flow guiding surface 210 forms a certain angle with respect to the extension direction of the flow guiding channel 11, so that the first flow guiding surface 210 gradually bends and extends from the length direction X toward the width direction Y, further causing the airflow that originally flowed in a straight line along the length direction X to be gradually changed in direction by the first flow guiding surface 210 as it approaches the air outlet 111, smoothly turning to the width direction Y and being blown to the first part 311 through the air outlet 111. The surface of the flow guiding surface is a smooth surface to reduce fluid separation. A first flow guiding component 21 is provided at the air outlet 111 of the flow guiding channel 11, which effectively avoids the phenomenon of vortex and airflow separation generated at the bend in the traditional right-angle air duct, significantly reduces flow resistance and noise, and improves the consistency of the air outlet direction and the uniformity of the air velocity distribution, so that the airflow can contact the surface of the heat exchange fins 31 more efficiently and achieve full heat exchange.

[0061] Reference Figure 4 and Figure 5 In some embodiments, a first recess is provided on the first guide surface 210, and the first recess faces the inside of the guide channel 11.

[0062] Specifically, in order to further optimize the streamline state of the airflow in the air outlet area of ​​the guide channel 11, the first concave part is an arc-shaped surface, and the first concave part constitutes the windward surface of the first guide surface 210. The first concave part gradually bends and extends from the inlet side of the guide channel 11 in the length direction X to the width direction Y. Its bending radius can be designed according to the channel size and wind speed. When the airflow flows in the guide channel 11 along the length direction X to the air outlet 111, it needs to complete the direction change in a limited space. If the first guide surface 210 is a planar structure, the airflow is prone to stagnation or separation in the corner area, resulting in a decrease in local flow velocity. However, by setting the first concave part on the first guide surface 210, the airflow can slide along its curved surface during the flow process. The gradual change of curvature realizes the natural transition of the airflow, so that the airflow remains continuous and stable in the process of turning from the length direction X to the width direction Y.

[0063] Reference Figure 4 In some embodiments, two first flow guiding members 21 are provided. The two first flow guiding members 21 are symmetrically arranged along the length direction X and are centrally located relative to the heat exchange fins 31 in the length direction X. The first flow guiding surfaces 210 of the two first flow guiding members 21 face opposite directions. Specifically, the two first flow guiding members 21 are respectively located at the air outlet 111 of the two flow guiding channels 11 and are symmetrically arranged along the length direction X. In other words, the two first flow guiding members 21 are spatially mirror-image distributed and symmetrically arranged with the heat exchange fins 31 as the central reference line. The first flow guiding surface 210 of each first flow guiding member 21 faces the corresponding flow guiding channel 11 and the air outlet direction, and the two first flow guiding surfaces 210 face opposite directions to each other, forming a symmetrical airflow guiding structure. The symmetrical arrangement allows the airflow on the left and right sides to be guided in opposite directions when passing through their respective first flow guiding surfaces 210, and finally converge or run parallel in front of the heat exchange fins 31, flowing out after passing through the first part 311 and the second part 312 of the heat exchange fins 31 in sequence. Furthermore, the centrally distributed first flow guiding components 21 also isolate the two flow guiding channels 11 in the length direction X, preventing airflow convection between the two flow guiding channels 11 at this point.

[0064] Reference Figure 4 and Figure 5 In some embodiments, the air supply assembly 2 further includes a second flow guide member 22, which is disposed within the flow guide channel 11; the second flow guide member 22 is disposed at the center of the air outlet 111 in the length direction X; the second flow guide member 22 includes a second flow guide surface 220, which extends from the side near the air inlet 111 toward the direction near the heat exchange fins 31; or, the first flow guide surface 210 is provided with a first recess facing the interior of the flow guide channel 11, and the second flow guide surface 220 is provided with a second recess, the orientation of the second recess being the same as the orientation of the first recess.

[0065] Specifically, the second flow guide member 22 is disposed within the air outlet 111 of the flow guide channel 11, and is located at the center of the air outlet 111 in the length direction X. The main function of the second flow guide member 22 is to divert and equalize the airflow flowing out of the flow guide channel 11, so that the airflow is more evenly distributed to the surface of the heat exchange fins 31 after passing through the air outlet 111. Through the guidance of the second flow guide member 22, the phenomenon of uneven heat exchange caused by the airflow concentrating on one side or in a local area of ​​the air outlet 111 can be avoided. The second flow guide surface 220 of the second flow guide member 22 is the same as the first flow guide surface 210, both extending from the side near the air inlet 110 towards the direction near the heat exchange fins 31. Through the consistent extension direction, the airflow maintains a continuous flow trend in the outlet area of ​​the flow guide channel 11. The two work together to guide the airflow and form a stable streamline turning structure. In the width direction Y, the size of the second guide member 22 is smaller than that of the first guide member 21, ensuring that the second guide member 22 does not completely block the main airflow path. This allows some airflow to naturally merge with the airflow guided by the first guide member 21 after passing through the second guide member 22. The arrangement of the second guide member 22 and the first guide member 21 balances airflow guidance and flowability, serving both a guiding and diverting function without causing fluid blockage. Figure 5 As shown, the first recess on the first guide surface 210 is the same as the second recess on the second guide surface 220. Both the first and second recesses extend curvedly from the length direction X to the width direction Y, and the curved surfaces face the same direction, making the outlet area of ​​the guide channel 11 form an integral streamlined curved surface space. The airflow can slide along the curved surface when passing through, further reducing flow resistance and turbulence. After the airflow is guided by the first guide surface 210 and the second guide surface 220, its outlet direction is smoother, and the wind speed distribution covering the heat exchange fins 31 is more balanced.

[0066] Reference Figure 4 and Figure 5In some embodiments, the flow channel 11 has an expansion section 112 at the air inlet 110. The expansion section 112 expands outward in a direction away from the fan 20, thereby increasing the area of ​​the air inlet 110 of the flow channel 11 and increasing the air volume delivered to the heat exchange fins 31. For example, the expansion section 112 expands outward in the width direction Y towards the outside of the outer casing 1, and / or expands outward in the thickness direction Z towards the outside of the outer casing 1. Specifically, in order to increase the flow rate of air entering the flow channel 11 and improve the stability of the airflow, an expansion section 112 is provided at the air inlet 110 of the flow channel 11. The expansion section 112 can be formed by gradually opening outward from the inlet wall of the flow channel 11, and its cross-section gradually increases from the mainstream section of the flow channel 11 towards the air inlet side. Specifically, the expansion section 112 can expand outwards towards the outside of the outer shell 1 in the width direction Y, increasing the lateral opening area of ​​the air inlet 110 of the guide channel 11, thereby increasing the cross-sectional area of ​​the air that can be drawn in; it can also expand outwards towards the outside of the outer shell 1 in the thickness direction Z, forming a gradually widening structure in the vertical direction of the air intake area to adapt to the streamline diffusion characteristics of the air outlet of the fan 20. By setting the expansion section 112 at the air inlet 110 of the guide channel 11 and expanding outwards towards the outside of the outer shell 1 in the width direction Y and / or thickness direction Z, the airflow delivered by the fan 20 can be fully diffused and pressure equalized before entering the guide channel 11, thereby effectively increasing the air volume entering the channel. A larger intake flow rate can be obtained under the same fan 20 power, providing sufficient and stable airflow conditions for the subsequent heat exchange fins 31, thereby improving the overall cooling performance.

[0067] Reference Figure 3 In some embodiments, the heat dissipation vent 12 is formed on the outer shell 1 and is positioned corresponding to the second part 312, with the vent 12 located away from the skin-contacting part 10. Specifically, to prevent the hot air released by the heat exchange fins 31 from directly acting on the user's skin, the heat dissipation vent 12 is located on the side of the outer shell 1 away from the skin-contacting part 10. When the thermoelectric element 30 is working, its heat-generating surface 300 conducts heat step by step to the area inside the outer shell 1 away from the skin-contacting direction through the first part 311 and the second part 312, and finally discharges it to the external environment through the heat dissipation vent 12. By arranging the heat dissipation vent 12 away from the skin-contacting part 10, the discharged high-temperature airflow can be kept away from the human body contact area, avoiding discomfort caused by the hot air blowing back, while ensuring the safety of the wearing experience. The heat dissipation port 12 is preferably located at the end of the second part 312 of the heat exchange fin 31 away from the first part 311, that is, at the end of the entire fin assembly through which the airflow passes. This allows the airflow to absorb heat after passing through the first part 311, and then fully release the heat along the heat dissipation channel of the second part 312. The heat is then quickly discharged when it approaches the end of the channel, thereby shortening the heat retention time and reducing the temperature accumulation inside the casing.

[0068] In some embodiments, the housing 1 is further provided with an air outlet channel 14, which is distributed and isolated from the flow guide channel 11 in the thickness direction Z; one end of the air outlet channel 14 is connected to the air outlet side airflow of the fan 20, and the other end is provided with a cold air outlet 140; the cold air outlet 140 is opened on the housing 1.

[0069] Specifically, in addition to the heat dissipation guiding channel 11, the outer casing 1 also has an additional air outlet channel 14 arranged in the thickness direction Z. The air outlet channel 14 and the guiding channel 11 are arranged in an upper and lower layer relationship, and are spatially independent and isolated to prevent airflow mixing. The guiding channel 11 is mainly used to remove heat from the heat-generating part of the thermoelectric element 30; while the air outlet channel 14 directly guides part of the airflow from the outlet side of the fan 20 to the skin-contact part 10 for air cooling of the user's skin area, achieving a two-way cooling effect. Figure 6 As shown, there can be two air outlet channels 14, each corresponding to one of the two fans 20. This allows the air supply assembly 2 to operate such that when running, a portion of the airflow passes through the guide channel 11 and is blown towards the heat exchange fins 31, while the other portion is discharged through the air outlet channel 14 from the cold air outlet 140 located on the skin-contact portion 10. In other embodiments, the cold air outlet 140 is also located near the skin on the outer wall of the housing 1 where the skin-contact portion 10 is located, so that a low-temperature airflow can be directly blown onto the user's skin area during cooling operation.

[0070] Reference Figure 6 In some embodiments, the housing 1 is further provided with a partition 13, which is used to isolate the air guide channel 11 from the air outlet channel 14. The side of the partition 13 facing the air guide channel 11 is a flow expansion surface 130, which is inclined in the thickness direction Z from one end near the air inlet 110 to one end near the air outlet 111.

[0071] Specifically, a partition 13 is provided inside the outer casing 1 to physically isolate the airflow channel 11 from the air outlet channel 14. To further optimize the airflow diffusion effect within the airflow channel 11, the side of the partition 13 facing the airflow channel 11 is a diffuser surface 130. The diffuser surface 130 is not straight; it is inclined along the thickness direction Z toward the first part 311 of the heat exchange fin 31. This makes the end of the diffuser surface 130 closer to the first part 311 closer to the thermoelectric element 30 in the thickness direction Z, and the end of the diffuser surface 130 further away from the first part 311 further away from the thermoelectric element 30 in the thickness direction Z. This allows the airflow to gradually diffuse along the thickness direction Z at the outlet of the airflow channel 11, ensuring that the entire heat exchange fin 31 is covered by the airflow in the thickness direction Z. When the height of the heat exchange fin 31 is large, the diffuser surface 130 provides the necessary guiding space, allowing the airflow to flow evenly across the fin surface from the bottom to the top of the airflow channel 11, preventing the airflow from concentrating in a local area.

[0072] Reference Figure 3 , Figure 4 , Figure 5 and Figure 6 In some embodiments, the outer casing 1 includes a fixing plate 1a disposed on the outer periphery of the heat exchange fins 31, the fixing plate 1a extending along the width direction Y; the outer casing 1 also includes a side plate 1b surrounding the circumferential outer side of the fan 20; the outer casing 1 also includes a first baffle 1c and a second baffle 1d, the first baffle 1c and the second baffle 1d extending along the length direction X, and the first baffle 1c and the second baffle 1d being arranged opposite to each other along the width direction Y; the first baffle 1c and the second baffle 1d constitute part of the wall of the flow channel 11; the first baffle 1c connects the fixing plate 1a and the side plate 1b, and the second baffle 1d is disposed away from the heat exchange fins 31 relative to the first baffle 1c.

[0073] Specifically, the first baffle 1c, the second baffle 1d, and the first guide member 21 are all formed on the rear shell 18. After the front shell 17 covers the rear shell 18, the first baffle 1c, the first guide member 21, the second baffle 1d, the rear shell 18, and the front shell 17 together form a guide channel 11. One end of the first baffle 1c is connected to the side plate 1b, and one end of the second baffle 1d extends to the air outlet side of the fan 20 and forms an expansion section 112 of the guide channel 11, so that the airflow generated by the fan 20 can smoothly enter the guide channel 11. The other end of the first baffle 1c is connected to the fixed plate 1a, and the other end of the second baffle 1d is connected to the first guide member 21. 1. This allows the airflow to be delivered to the first part 311 of the heat exchange fins 31 after passing through the guide channel 11. Since the fan 20 and the thermoelectric element 30 are spaced apart along the length X direction, the side of the fixed plate 1a away from the heat exchange fins 31, the side of the first baffle 1c away from the guide channel 11, and the side of the side plate 1b away from the fan 20 together form a buffer zone 15. The buffer zone 15 is isolated from the guide channel 11 and the heat exchange fins 31. This buffer zone 15 is close to the initial section of the fan 20's outlet side, where the internal air velocity is low, and the airflow is mainly discharged along the direction of the guide channel 11, thus naturally forming a sparse airflow area. If not distinguished, some airflow will form turbulence and backflow in this area, resulting in wasted air supply energy. To avoid this problem, an independent buffer zone 15 is set up so that the airflow generated by the fan 20 mainly flows along the direction of the guide channel 11 and cannot enter the buffer zone 15. This ensures that the airflow is concentrated through the first part 311 and the second part 312 of the heat exchange fins 31, further improving the airflow utilization rate and avoiding energy consumption and noise caused by flow around. At the same time, the heat exchange fins 31 are blocked by the fixed plate 1a and cannot extend into the buffer zone 15. If the heat exchange fins 31 extend into the buffer zone 15, there will be almost no airflow in some areas of the fins, which will not form effective heat exchange, resulting in reduced material utilization and decreased heat dissipation efficiency. Therefore, by reasonably limiting the arrangement range of the heat exchange fins 31, the weight of the device and manufacturing cost can be reduced while maintaining good thermal conductivity.

[0074] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A wearable cooling device, characterized in that, include: The outer casing (1), the air supply assembly (2) and the heat exchange assembly (3) disposed inside the outer casing (1); The heat exchange assembly (3) includes a thermoelectric element (30) and heat exchange fins (31) thermally coupled to the thermoelectric element (30), wherein the thermoelectric element (30) has a heat-generating surface (300); The heat exchange fins (31) include a first part (311) and a second part (312) that are connected to each other. The first part (311) is attached to the heat-generating surface (300), and the second part (312) extends outward from the first part (311). The air supply assembly (2) has an air outlet (111) which is arranged toward the first part (311), and the second part (312) is located on the side of the first part (311) away from the air outlet (111).

2. The wearable cooling device according to claim 1, characterized in that, The air supply assembly (2) includes a fan (20) and a flow channel (11). The flow channel (11) has an air inlet (110) and an air outlet (111). The air inlet (110) is connected to the airflow on the outlet side of the fan (20).

3. The wearable cooling device according to claim 2, characterized in that, The flow guiding channel (11) includes two, and the fan (20) is provided with two; the two flow guiding channels (11) are isolated from each other; the air inlet (110) of each flow guiding channel (11) corresponds one-to-one with the air outlet side of each fan (20), and the air outlet (111) of each flow guiding channel (11) is arranged adjacent to the first part (311) of the heat exchange fin (31).

4. The wearable cooling device according to claim 2, characterized in that, The outer shell (1) has a length direction, a width direction and a thickness direction; The channels within the heat exchange fins (31) extend along the width direction; The flow channel (11) extends along the length direction, and its air outlet (111) is arranged along the width direction toward the first part (311) of the heat exchange fin (31); The thermoelectric element (30) and the heat exchange fins (31) are stacked along the thickness direction; The first part (311) and the second part (312) are distributed sequentially along the width direction, and the second part (312) is disposed away from the air outlet (111) in the width direction.

5. The wearable cooling device according to claim 4, characterized in that, The flow guiding channel (11) includes two, and the fan (20) is provided with two; the two flow guiding channels (11) are isolated from each other; the air inlet (110) of each flow guiding channel (11) corresponds one-to-one with the air outlet side of each fan (20), and the air outlet (111) of each flow guiding channel (11) is arranged adjacent to the first part (311) of the heat exchange fin (31); The two fans (20) are spaced apart along the length direction; the heat exchange assembly (3) is located between the two fans (20) along the length direction.

6. The wearable cooling device according to claim 5, characterized in that, The air supply assembly (2) further includes a first flow guide member (21), which is provided corresponding to the flow guide channel (11); The first flow guide member (21) forms part of the wall of the air outlet (111), and the first flow guide member (21) is located on the side of the air outlet (111) away from the air inlet (110); The first flow guiding member (21) includes a first flow guiding surface (210), which extends from the side near the air inlet (110) toward the heat exchange fins (31).

7. The wearable cooling device according to claim 6, characterized in that, The first guide surface (210) is provided with a first recess, which faces the inside of the guide channel (11).

8. The wearable cooling device according to claim 6, characterized in that, Two first flow guiding members (21) are provided. The two first flow guiding members (21) are symmetrically arranged along the length direction and are centrally located relative to the heat exchange fins (31) in the length direction. The first flow guiding surfaces (210) of the two first flow guiding members (21) are oriented in opposite directions.

9. The wearable cooling device according to claim 6, characterized in that, The air supply assembly (2) further includes a second flow guide member (22), which is disposed within the flow guide channel (11); the second flow guide member (22) is disposed at the center of the air outlet (111) in the length direction; The second flow guiding member (22) includes a second flow guiding surface (220), which extends from the side near the air inlet (110) toward the heat exchange fins (31); and / or, the first flow guiding surface (210) has a first recess extending toward the interior of the flow guiding channel (11), and the second flow guiding surface (220) has a second recess, the orientation of the second recess being the same as the orientation of the first recess.

10. The wearable cooling device according to any one of claims 2-9, characterized in that, The flow channel (11) has an expansion section (112) at the air inlet (110), and the expansion section (112) expands outward in a direction away from the fan (20).

11. The wearable cooling device according to any one of claims 1-9, characterized in that, The outer shell (1) has a skin-contact portion (10), and the outer shell (1) is provided with a heat dissipation vent (12) corresponding to the second part (312), and the heat dissipation vent (12) is located on the side of the outer shell (1) away from the skin-contact portion (10).

12. The wearable cooling device according to any one of claims 4-9, characterized in that, The outer casing (1) is also provided with an air outlet channel (14), which is distributed and isolated from the flow guide channel (11) in the thickness direction; One end of the air outlet channel (14) is connected to the air outlet side of the fan (20), and the other end is provided with a cold air outlet (140); the cold air outlet (140) is opened on the outer shell (1).

13. The wearable cooling device according to claim 12, characterized in that, The outer casing (1) is also provided with a partition (13), which isolates the flow channel (11) from the air outlet channel (14); The side of the partition (13) facing the flow channel (11) is a flow-expanding surface (130), and the flow-expanding surface (130) is inclined in the thickness direction from one end near the air inlet (110) to one end near the air outlet (111).

14. The wearable cooling device according to any one of claims 4-9, characterized in that, The outer casing (1) includes a fixing plate (1a) disposed on the outer periphery of the heat exchange fins (31), the fixing plate (1a) extending along the width direction; the outer casing (1) also includes a side plate (1b) surrounding the circumferential outer side of the fan (20); the outer casing (1) also includes a first baffle (1c) and a second baffle (1d), the first baffle (1c) and the second baffle (1d) extending along the length direction, and the first baffle (1c) and the second baffle (1d) forming part of the wall of the flow channel (11); the first baffle (1c) connects the fixing plate (1a) and the side plate (1b), and the second baffle (1d) is disposed away from the heat exchange fins (31) relative to the first baffle (1c).

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