Handheld fan

Abstract

The utility model discloses a handheld fan, which comprises a shell, a refrigerating device, a first fan and a second fan, the shell is provided with a cold air duct and a hot air duct which are separated from each other, and an air outlet of the cold air duct and an air outlet of the hot air duct are respectively arranged on two opposite sides of the shell; the refrigeration device comprises a semiconductor refrigeration sheet and two temperature conduction pieces, the semiconductor refrigeration sheet is arranged in the shell, one temperature conduction piece is arranged in the cold air duct and is in heat conduction connection with the cold end of the semiconductor refrigeration sheet, and the other temperature conduction piece is arranged in the hot air duct and is in heat conduction connection with the hot end of the semiconductor refrigeration sheet; the first fan is arranged in the cold air duct and used for driving airflow to flow out of an air outlet of the cold air duct after flowing through the temperature conduction piece. The second fan is arranged in the hot air duct and used for driving airflow to flow out of the hot air duct air outlet after flowing through the temperature conduction piece. According to the technical scheme, the practicability of the handheld fan can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a handheld fan. Background Art

[0002] In the hot summer, fans have become an indispensable daily necessity in people's daily lives. People often use fans to effectively cool down. In order to achieve cooling more effectively, cooling fans have come into being, which allows users to feel cooler when using fans. However, in order to achieve fan cooling, in the current cooling scheme, semiconductor cooling sheets are usually set inside the fan to achieve cooling through the semiconductor cooling sheets, and the fan will blow out hot and cold air together, which results in an unobvious cooling effect. Moreover, when the hot summer is over, the fan can only be idle and cannot be used, which is less practical. Utility Model Content

[0003] The main purpose of the utility model is to provide a handheld fan, aiming to improve the practicality of the handheld fan.

[0004] To achieve the above object, the handheld fan proposed by the utility model comprises:

[0005] The shell is provided with a cold air duct and a hot air duct separated from each other, and the cold air duct outlet and the hot air duct outlet are respectively arranged on opposite sides of the shell;

[0006] A refrigeration device, comprising a semiconductor refrigeration sheet and two heat conducting components, wherein the semiconductor refrigeration sheet is arranged on the housing, wherein one of the heat conducting components is arranged on the cold air duct and is connected to the cold end of the semiconductor refrigeration sheet by heat conduction, and the other of the heat conducting components is arranged on the hot air duct and is connected to the hot end of the semiconductor refrigeration sheet by heat conduction;

[0007] a first fan, which is disposed in the cold air duct and is used to drive the air flow to flow through the temperature conducting member and then flow out from the air outlet of the cold air duct; and

[0008] The second fan is arranged in the hot air duct, and is used for driving the air flow to flow through the temperature conducting component and then flow out from the air outlet of the hot air duct.

[0009] Optionally, the thermal conductive component includes a plate body and a plurality of heat conductive sheets, the plurality of heat conductive sheets are arranged on the peripheral side of the plate body, the plurality of heat conductive sheets are distributed at intervals along the circumference of the plate body, and the cold end and the hot end of the semiconductor refrigeration sheet are respectively connected to the plate body and heat conduction corresponding to the thermal conductive component.

[0010] Optionally, the air inlet and the air outlet of the cold air duct are arranged on the same side; and / or

[0011] The air inlet and the air outlet of the hot air duct are arranged on the same side.

[0012] Optionally, the shell is provided with a first mounting opening, and the handheld fan further comprises a first wind guide cover, the first wind guide cover is provided at the first mounting opening, the first wind guide cover comprises a first outer ring portion, a first inner ring portion and a connecting portion connected between the first inner ring portion and the first outer ring portion, the cold air duct outlet is formed between the first inner ring portion and the first outer ring portion, and the cold air duct inlet is formed in the first inner ring portion; the first inner ring portion abuts against an edge of the first fan; and / or,

[0013] The shell is provided with a second mounting port, and the handheld fan also includes a second wind guide cover, which is provided at the second mounting port. The second wind guide cover includes a second outer ring portion, a second inner ring portion and a connecting portion connected between the second inner ring portion and the second outer ring portion, the hot air duct outlet is formed between the second inner ring portion and the second outer ring portion, and the hot air duct inlet is formed in the second inner ring portion; the second inner ring portion abuts against the edge of the second fan.

[0014] Optionally, the shell is provided with a first mounting opening, and the handheld fan further comprises a first air guide cover, the first air guide cover is slidably installed at the first mounting opening along the opening direction of the first mounting opening, and the first air guide cover is provided with the cold air duct outlet and air inlet; and / or

[0015] The shell is provided with a second mounting opening, and the handheld fan also includes a second air guide cover. The first air guide cover is slidably installed at the second mounting opening along the opening direction of the second mounting opening, and the second air guide cover is provided with the hot air duct outlet and air inlet.

[0016] Optionally, a first limiting portion and a second limiting portion are convexly provided on the duct wall of the cold air duct, the first limiting portion is located between the second limiting portion and the temperature conducting component, the first limiting portion and the second limiting portion both extend along the circumferential direction of the duct wall of the cold air duct, the first limiting portion and the second limiting portion are spaced apart, a third limiting portion is provided on the outer peripheral surface of the first air guide cover, and when the first air guide cover is slidably installed at the first installation port, the third limiting portion is located between the first limiting portion and the second limiting portion; and / or

[0017] A fourth limiting portion and a fifth limiting portion are protrudingly provided on the duct wall of the hot air duct, the fourth limiting portion is located between the fifth limiting portion and the temperature conducting component, the fourth limiting portion and the fifth limiting portion both extend along the circumferential direction of the duct wall of the cold air duct, the fourth limiting portion and the fifth limiting portion are spaced apart, a sixth limiting portion is provided on the outer peripheral surface of the second air guide cover, and when the second air guide cover is slidably installed at the second installation port, the sixth limiting portion is located between the first limiting portion and the second limiting portion.

[0018] Optionally, a flexible layer is provided between the third limiting portion and the wall of the cold air duct; and / or

[0019] A flexible layer is provided between the sixth limiting portion and the air duct wall of the hot air duct.

[0020] Optionally, the shell is provided with a handle portion, and the handheld fan further includes a main control board and a battery, the main control board and the battery are both installed in the handle portion, and the battery, the semiconductor refrigeration sheet, the first fan and the second fan are all electrically connected to the main control board.

[0021] Optionally, the handheld fan further comprises a support ring, a support plane is provided on a side of the handle away from the housing, and the support ring is rotatably mounted on a portion of the handle close to the support plane.

[0022] Optionally, the shell includes a front shell, a rear shell and a partition plate, the partition plate is installed in a cavity formed by the front shell and the rear shell, the cold air duct is formed between one side of the partition plate and the front shell, and the hot air duct is formed between the other side of the partition plate and the rear shell.

[0023] The handheld fan of the technical solution of the utility model is provided with a cold air duct and a hot air duct separated from each other on the shell, and the cold air duct outlet and the hot air duct outlet are arranged on opposite sides of the shell, and the refrigeration device is provided with a semiconductor refrigeration plate and two heat conducting components, the semiconductor refrigeration plate is arranged in the shell, one of the heat conducting components is arranged in the hot air channel and is thermally connected to the hot end of the semiconductor refrigeration plate, and the other heat conducting component is arranged in the cold air duct and is thermally connected to the cold end of the semiconductor refrigeration plate, a first fan is arranged in the cold air duct to drive the airflow to flow through the heat conducting component and then flow out from the cold air duct outlet, and a second fan is arranged in the hot air duct to drive the airflow to flow through the heat conducting component and then flow out from the hot air duct outlet. In this way, when the semiconductor refrigeration plate is working, the cooling end can conduct the cold air to the temperature conductive part connected to it. When the first fan drives the external air flow into the cold air duct and flows through the temperature conductive part, the cold air on the temperature conductive part can be taken away, thereby forming cold air, so that the air flowing out from the outlet of the cold air duct is cold air. The heating end can conduct the heat to the temperature conductive part connected to it. When the second fan drives the external air flow to the hot air fan and flows through the temperature conductive part, the heat on the temperature conductive part can be taken away, thereby forming hot air, so that the air flowing out from the outlet of the hot air duct is hot air. In this way, one side of the handheld fan can blow cold air and the other side can blow hot air, so that the handheld fan of the present application can use the end that blows cold air in hot summer and the end that blows hot air in cold winter, which improves the practicality of the handheld fan and also improves the cooling effect of the handheld fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 This is a structural schematic diagram of an embodiment of the handheld fan of the utility model;

[0026] Figure 2 for Figure 1 Side view of the handheld fan;

[0027] Figure 3 for Figure 1 A cross-sectional view of a handheld fan;

[0028] Figure 4 for Figure 1 Exploded view of a handheld fan in the middle;

[0029] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0030] Description of Figure Numbers:

[0031] 10. Shell; 11. Cold air duct; 111. Cold air duct outlet; 112. Cold air duct inlet; 12. Hot air duct; 121. Hot air duct outlet; 122. Hot air duct inlet; 13. Front shell; 14. Rear shell; 15. Partition plate; 16. Handle; 20. Refrigeration device; 21. Semiconductor refrigeration sheet; 22. Temperature conducting element; 221. Plate; 222. Heat conducting sheet; 30. First fan; 31. Second fan; 40. Main control board; 41. Battery; 42 , button; 43, charging interface; 44, charging indicator light; 45, working indicator light; 50, supporting ring; 60, first separating ring; 61, second separating ring; 70, first air guide cover; 71, first outer ring portion; 72, first inner ring portion; 80, first limiting portion; 81, second limiting portion; 82, third limiting portion; 83, fourth limiting portion; 84, fifth limiting portion; 85, sixth limiting portion; 86, convex rib; 90, second air guide cover; 91, second outer ring portion; 92, second outer ring portion

[0032] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0036] The utility model provides a handheld fan.

[0037] In the embodiment of the present utility model, Figures 1 to 5 As shown, the handheld fan includes a housing 10 , a refrigeration device 20 , a first fan 30 and a second fan 31 .

[0038] The shell 10 is provided with a cold air duct 11 and a hot air duct 12 separated from each other, and the cold air duct outlet 111 and the hot air duct outlet 121 are respectively arranged on opposite sides of the shell 10; the refrigeration device 20 includes a semiconductor refrigeration plate 21 and two heat-conducting parts 22, the semiconductor refrigeration plate 21 is arranged in the shell 10, one of the heat-conducting parts 22 is arranged in the cold air duct 11, and is thermally connected to the cold end of the semiconductor refrigeration plate 21, and the other heat-conducting part 22 is arranged in the hot air duct 12, and is thermally connected to the hot end of the semiconductor refrigeration plate 21; the first fan 30 is arranged in the cold air duct 11, and is used to drive the air flow to flow through the heat-conducting part 22 and then flow out from the cold air duct outlet 111; the second fan 31 is arranged in the hot air duct 12, and is used to drive the air flow to flow through the heat-conducting part 22 and then flow out from the hot air duct outlet 121.

[0039] Specifically, the cooling end of the semiconductor refrigeration plate 21 can transfer cold energy to the temperature conducting component 22 connected thereto, and when the first fan 30 drives the external air flow into the cold air duct 11 and flows through the temperature conducting component 22, the cold energy on the temperature conducting component 22 can be taken away, thereby forming cold air. The heating end of the semiconductor refrigeration plate 21 can transfer heat to the temperature conducting component 22 connected thereto, and when the first fan 30 drives the external air flow into the hot air duct 12 and flows through the temperature conducting component 22, the heat on the temperature conducting component 22 can be taken away, thereby forming hot air.

[0040] Among them, the first fan 30 and the second fan 31 can be, but are not limited to, centrifugal fans, axial flow fans, cross flow fans, etc. When the first fan 30 is a centrifugal fan, after the centrifugal fan drives the external airflow into the cold air duct 11, the airflow can flow in the cold air duct 11 to flow through the thermal conductive member 22 for heat exchange, thereby forming cold air, and then discharged from the cold air duct outlet 111. When the second fan 31 is a centrifugal fan, after the centrifugal fan drives the external airflow into the hot air duct 12, the airflow can flow in the hot air duct 12 to flow through the thermal conductive member 22 for heat exchange, thereby forming hot air, and then discharged from the hot air duct outlet 121.

[0041] The handheld fan of the technical solution of the utility model is provided with a cold air duct 11 and a hot air duct 12 separated from each other in the shell 10, and the cold air duct outlet 111 and the hot air duct outlet 121 are arranged on the opposite sides of the shell 10, and the refrigeration device 20 is provided with a semiconductor refrigeration plate 21 and two heat conducting components 22, the semiconductor refrigeration plate 21 is arranged in the shell 10, one of the heat conducting components 22 is arranged in the hot air channel and is thermally connected to the hot end of the semiconductor refrigeration plate 21, and the other heat conducting component 22 is arranged in the cold air duct 11 and is thermally connected to the cold end of the semiconductor refrigeration plate 21, a first fan 30 is arranged in the cold air duct 11, so as to drive the airflow to flow through the heat conducting component 22 and then flow out from the cold air duct outlet 111, and a second fan 31 is arranged in the hot air duct 12, so as to drive the airflow to flow through the heat conducting component 22 and then flow out from the hot air duct outlet 121. In this way, when the semiconductor refrigeration sheet 21 is working, the cooling end can conduct the cold to the temperature conducting member 22 connected thereto, and when the first fan 30 drives the external airflow into the cold air duct 11 and flows through the temperature conducting member 22, the cold on the temperature conducting member 22 can be taken away, thereby forming cold wind, so that what flows out from the cold air duct outlet 111 is cold wind, and the heating end can conduct the heat to the temperature conducting member 22 connected thereto, and when the second fan 31 drives the external airflow to the hot air fan and flows through the temperature conducting member 22, the heat on the temperature conducting member 22 can be taken away, thereby forming hot wind, so that what flows out from the hot air duct outlet 121 is hot wind. In this way, one side of the handheld fan can blow cold air, and the other side can blow hot air, so that the handheld fan of the present application can use the end blowing cold air in hot summer and the end blowing hot air in cold winter, which improves the practicality of the handheld fan and also improves the cooling effect of the handheld fan.

[0042] In some embodiments, the thermal conductive component 22 includes a plate body 221 and a plurality of heat conductive plates 222. The plurality of heat conductive plates 222 are all arranged on the peripheral side of the plate body 221. The plurality of heat conductive plates 222 are distributed at intervals along the circumference of the plate body 221. The cold end and the hot end of the semiconductor refrigeration plate 21 are respectively thermally connected to the plate body 221 of the corresponding thermal conductive component 22.

[0043] Specifically, after the first fan 30 drives the external airflow into the cold air duct 11, the airflow can flow in the cold air duct 11 to flow through the multiple heat conducting sheets 222 on the surface of the plate body 221 to take away the cold on the plate body 221 and the multiple heat conducting sheets 222. This increases the contact area between the airflow and the heat conducting member 22, so that the airflow flowing out of the air outlet of the cold air duct 11 can have a better cooling effect, so that the user feels cooler when receiving the airflow flowing out of the air outlet of the cold air duct 11, thereby improving the user's experience. It is worth noting that there are at least two heat conducting sheets 222. Exemplarily, the number of the multiple heat conducting sheets 222 is but not limited to: two, three, four, or more. Of course, in other embodiments, the heat conducting member 22 is provided with one heat conducting sheet 222. Since the structures of the two heat conducting members 22 are the same, the heat conducting member 22 at the hot end will not be described one by one in this application.

[0044] In some embodiments, the cold air duct inlet 112 and the air outlet are arranged on the same side. It can be understood that such an arrangement can centrally arrange the cold air duct inlet 112 and the air outlet on the same side of the housing 10, avoiding the need to arrange the cold air duct inlet 112 and the air outlet on both sides of the housing 10, thereby reducing the production difficulty of the housing 10. Of course, the design of the present application is not limited thereto. In other embodiments, the cold air duct inlet 112 and the air outlet are arranged on two adjacent sides of the housing 10, or the cold air duct inlet 112 and the air outlet are arranged on two opposite sides of the housing 10.

[0045] In some embodiments, the hot air duct inlet 122 and the air outlet are arranged on the same side. It can be understood that such an arrangement can centrally arrange the hot air duct inlet 122 and the air outlet on the same side of the housing 10, avoiding the need to arrange the hot air duct inlet 122 and the air outlet on both sides of the housing 10, thereby reducing the production difficulty of the housing 10. Of course, the design of the present application is not limited thereto. In other embodiments, the hot air duct inlet 122 and the air outlet are arranged on two adjacent sides of the housing 10, or the hot air duct inlet 122 and the air outlet are arranged on two opposite sides of the housing 10.

[0046] In some embodiments, the shell 10 is provided with a first mounting port, and the handheld fan also includes a first wind guide cover 70, which is provided at the first mounting port. The first wind guide cover 70 includes a first outer ring portion 71, a first inner ring portion 72 and a connecting portion connected between the first inner ring portion 72 and the first outer ring portion 71, a cold air duct outlet 111 is formed between the first inner ring portion 72 and the first outer ring portion 71, and a cold air duct inlet 112 is formed in the first inner ring portion 72; the first inner ring portion 72 abuts against the edge of the first fan 30.

[0047] Specifically, the first inner ring portion 72 is installed in the middle of the first outer ring portion 71 through a plurality of connecting portions, one end of each of the plurality of connecting portions is connected to the outer peripheral surface of the first inner ring portion 72, and is spaced and arranged along the circumference of the first inner ring portion 72, and the other ends of each of the plurality of connecting portions is connected to the inner side wall of the first outer ring portion 71. A cold air duct inlet 112 is formed in the first inner ring portion 72, and a cold air duct outlet 111 is formed in the first inner ring portion 72 and spaced from the inner side wall of the first outer ring portion 71. The first inner ring portion 72 abuts against the edge of the first fan 30, so that the first fan 30 covers the cold air duct inlet 112. In this way, during specific use, the first fan 30 delivers external airflow into the cold air duct 11 through the cold air duct inlet 112, and flows through the temperature conduction component 22, thereby taking away the cold energy of the temperature conduction component 22 to form cold air. Since the air inlet is covered by the first fan 30, the air flow can only flow out from the air outlet, so that the cold air flowing out of the air outlet can be stronger. That is to say, the user can feel stronger cold air when using it, which improves the user experience.

[0048] Different from the above-mentioned disposition of the first inner ring portion 72 , in other embodiments, the first inner ring portion 72 is connected to the inner side wall of the first outer ring portion 71 .

[0049] In some embodiments, the shell 10 is provided with a second mounting port, and the handheld fan also includes a second wind guide cover 90, which is provided at the second mounting port. The second wind guide cover 90 includes a second outer ring portion 92, a second inner ring portion 91 and a connecting portion connected between the second inner ring portion 91 and the second outer ring portion 92, a hot air duct outlet 121 is formed between the second inner ring portion 91 and the second outer ring portion 92, and a hot air duct inlet 122 is formed in the second inner ring portion 91; the second inner ring portion 91 abuts against the edge of the second fan 31.

[0050] Specifically, the second inner ring portion 91 is installed in the middle of the second outer ring portion 92 through a plurality of connecting parts, one end of each of the plurality of connecting parts is connected to the outer peripheral surface of the second inner ring portion 91, and is arranged at intervals along the circumference of the second inner ring portion 91, and the other ends of each of the plurality of connecting parts are connected to the inner side wall of the second outer ring portion 92. A hot air duct inlet 122 is formed in the second inner ring portion 91, and a hot air duct outlet 121 is formed in the second inner ring portion 91 and at intervals between the inner side wall of the second outer ring portion, and the second inner ring portion 91 abuts against the edge of the second fan 31, so that the second fan 31 covers the hot air duct inlet 122. In this way, during specific use, the second fan 31 delivers external air flow into the hot air duct 12 through the hot air duct inlet 122, and flows through the temperature conduction component 22, thereby taking away the cold energy of the temperature conduction component 22 to form hot air. Since the air inlet is covered by the second fan 31, the air flow can only flow out from the air outlet, so that the hot air flowing out of the air outlet can be stronger. That is to say, the user can feel stronger hot air when using it, which improves the user experience.

[0051] Different from the above-mentioned arrangement of the second inner ring portion, in other embodiments, the outer side wall of the second inner ring portion 91 is connected to the inner side wall of the second outer ring portion 92 .

[0052] Optionally, the handheld fan further includes a first separating ring 60, which is disposed at the first mounting opening, extends into the first inner ring portion 72, and abuts against the side of the first fan 30. Further, the handheld fan further includes a second separating ring 61, which is disposed at the second mounting opening, extends into the second inner ring portion, and abuts against the side of the second fan 31.

[0053] In some embodiments, the shell 10 is provided with a first mounting port, and the handheld fan also includes a first air guide cover 70, which is slidably installed at the first mounting port along the opening direction of the first mounting port, and the first air guide cover 70 is provided with a cold air duct outlet 111 and an air inlet.

[0054] Specifically, the first air guide cover 70 extends into the cold air duct 11 and can slide to approach and move away from the first fan 30. When the first air guide cover 70 slides away from the first fan 30, the peripheral side wall of the first air guide cover 70 can extend the first cold air duct 11. In actual use, the user can pull the first air guide cover 70 to slide in a direction away from the first fan 30 to extend the cold air duct 11, so that the cold air duct outlet 111 can be closer to the user, so that the user can receive more cold air flowing out of the cold air duct outlet 11, thereby improving the user's comfort and enhancing the user's experience.

[0055] When the user does not need to use the handheld fan, the user only needs to apply a force to the first air guide cover 70 to move toward the first fan 30, so that the first air guide cover 70 can slide in the direction of the first fan 30, thereby reducing the space occupied by the handheld fan and making it easier for the user to store it. Of course, in other embodiments, the first air guide cover 70 is fixedly installed at the first installation opening.

[0056] In some embodiments, the shell 10 is provided with a second mounting port, and the handheld fan also includes a second wind guide cover 71. The first wind guide cover 70 is slidably installed at the second mounting port along the opening direction of the second mounting port, and the second wind guide cover 71 is provided with a hot air duct outlet 121 and an air inlet.

[0057] Specifically, the second air guide cover 71 extends into the hot air duct 12 and can slide to approach and move away from the second fan 31. When the second air guide cover 71 slides away from the second fan 31, the peripheral side wall of the second air guide cover 71 can extend the first hot air duct 12. In actual use, the user can pull the second air guide cover 71 to slide in a direction away from the second fan 31 to extend the hot air duct 12, so that the hot air duct outlet 121 can be closer to the user, so that the user can receive more cold air flowing out of the hot air duct 12 outlet, thereby improving the user's comfort and enhancing the user's experience.

[0058] When the user does not need to use the handheld fan, the user only needs to apply a force to the second air guide cover 71 to move toward the second fan 31, so that the second air guide cover 71 can slide in the direction of the second fan 31, thereby reducing the space occupied by the handheld fan and making it easier for the user to store it. Of course, in other embodiments, the second air guide cover 71 is fixedly installed at the first installation opening.

[0059] In some embodiments, a first limiting portion 80 and a second limiting portion 81 are protrudingly provided on the duct wall of the cold air duct 11, and the first limiting portion 80 is located between the second limiting portion 81 and the heat conducting member 22. The first limiting portion 80 and the second limiting portion 81 both extend circumferentially along the duct wall of the cold air duct 11, and the first limiting portion 80 and the second limiting portion 81 are spaced apart from each other. A third limiting portion 82 is provided on the outer peripheral surface of the first air guide cover 70, and when the first air guide cover 70 is slidably installed at the first installation port, the third limiting portion 82 is located between the first limiting portion 80 and the second limiting portion 81.

[0060] Specifically, when the user pushes the first air guide cover 70 to approach the first fan 30, the first limiting portion 80 can limit the third limiting portion 82, which is equivalent to limiting the first air guide cover 70, preventing the user from pushing the first air guide cover 70 too far to interfere with the first fan 30. When the user pulls the first air guide cover 70 away from the first fan 30, the second limiting portion 81 can limit the third limiting portion 82, which is equivalent to limiting the first air guide cover 70, preventing the user from pulling the first air guide cover 70 away from the cold air duct 11. In this way, the push-in position and the extended position of the first air guide cover 70 can be limited, thereby improving the user's experience. Of course, in other embodiments, a limiting groove is provided on the duct wall of the cold air duct 11, the limiting groove extends along the air supply direction of the cold air duct 11, the limiting groove is in a closed state, and the third limiting portion 82 extends into the limiting groove.

[0061] In some embodiments, a fourth limiting portion 83 and a fifth limiting portion 84 are protrudingly provided on the air duct wall of the hot air duct 12, the fourth limiting portion 83 is located between the fifth limiting portion 84 and the temperature conducting member 22, the fourth limiting portion 83 and the fifth limiting portion 84 both extend circumferentially along the air duct wall of the cold air duct 11, the fourth limiting portion 83 and the fifth limiting portion 84 are spaced apart, a sixth limiting portion 85 is provided on the outer peripheral surface of the second air guide cover 71, and when the second air guide cover 71 is slidably installed at the second installation port, the sixth limiting portion 85 is located between the first limiting portion 80 and the second limiting portion 81.

[0062] Specifically, when the user pushes the second air guide cover 71 to approach the first fan 30, the fourth limiting portion 83 can limit the sixth limiting portion 85, which is equivalent to limiting the second air guide cover 71, preventing the user from pushing the second air guide cover 71 too much to interfere with the first fan 30. When the user pulls the second air guide cover 71 away from the first fan 30, the fifth limiting portion 84 can limit the sixth limiting portion 85, which is equivalent to limiting the second air guide cover 71, preventing the user from pulling the second air guide cover 71 away from the hot air duct 12. In this way, the push-in position and the extended position of the second air guide cover 71 can be limited, thereby improving the user's experience. Of course, in other embodiments, a limiting groove is provided on the duct wall of the cold air duct 11, the limiting groove extends along the air supply direction of the hot air duct 12, the limiting groove is in a closed state, and the sixth limiting portion 85 extends into the limiting groove.

[0063] In some embodiments, a flexible layer is provided between the third limiting portion 82 and the duct wall of the cold air duct 11. Specifically, a flexible layer is provided on the side of the third limiting portion 82 facing the duct wall of the cold air duct 11. It can be understood that the flexible layer is made of a flexible material, and the flexible material has a strong friction force, so that when the user needs to push the first air guide cover 70 to slide in the direction close to the first fan 30, a certain thrust needs to be given. Similarly, when the user needs to pull the first air guide cover 70 to slide in the direction away from the first fan 30, a certain pulling force needs to be given. In this way, when the user pulls or pushes the first air guide cover 70 to the desired position, due to the setting of the flexible layer, when a certain amount of pulling force or pushing force is not applied to the first air guide cover 70, the first air guide cover 70 can be stably maintained in this position, thereby improving the user experience. Exemplarily, the flexible layer can be but does not include: rubber, PVC soft glue, etc. Of course, in other embodiments, a plurality of adjustment grooves are recessed on the wall of the cold air duct 11 , and the plurality of adjustment grooves are spaced apart along the length direction of the cold air duct 11 , and the third limiting portion 82 selects one of the adjustment grooves for engagement.

[0064] Different from the above-mentioned arrangement of the flexible layer, in other arrangements, the flexible layer is arranged on the duct wall of the cold air duct 11 .

[0065] In some embodiments, a flexible layer is provided between the sixth limiting portion 85 and the air duct wall of the hot air duct 12. Specifically, a flexible layer is provided on the side of the sixth limiting portion 85 facing the air duct wall of the hot air duct 12. It can be understood that the flexible layer is made of a flexible material, and the flexible material has a strong friction force, so that when the user needs to push the second air guide cover 71 to slide in the direction close to the first fan 30, a certain thrust needs to be given. Similarly, when the user needs to pull the second air guide cover 71 to slide in the direction away from the first fan 30, a certain pulling force needs to be given. In this way, when the user pulls or pushes the second air guide cover 71 to the desired position, due to the setting of the flexible layer, when a certain amount of pulling force or pushing force is not applied to the second air guide cover 71, the second air guide cover 71 can be stably maintained in this position, thereby improving the user experience. Exemplarily, the flexible layer can be but does not include: rubber, PVC soft glue, etc. Of course, in other embodiments, a plurality of adjustment grooves are recessed on the wall of the hot air duct 12, and the plurality of adjustment grooves are spaced apart along the length direction of the hot air duct 12, and the sixth limiting portion 85 selects one of the adjustment grooves for engagement.

[0066] Different from the above-mentioned flexible layer arrangement, in other arrangements, the flexible layer is arranged on the duct wall of the hot air duct 12 .

[0067] In some embodiments, the outer circumferential surface of the first air guide cover 70 is further provided with a plurality of convex ribs 86, and the plurality of convex ribs 86 are spaced apart along the circumference of the first air guide cover 70, and the plurality of convex ribs 86 are spaced apart from the third limiting portion 82. Specifically, the plurality of convex ribs 86 are all provided on the outer circumferential surface of the first air guide cover 70, and when the user pulls the first air guide cover 70 to slide in a direction away from the first fan 30, the plurality of convex ribs 86 can increase the contact area between the user's hand and the first air guide cover 70, so as to play an anti-slip role. Among them, the plurality of convex ribs 86 are at least two, and illustratively, the plurality of convex ribs 86 can be, but not limited to, two, three, four, etc. Of course, in other embodiments, the outer circumferential surface of the first air guide cover 70 can also be provided with only one convex rib 86.

[0068] In some embodiments, the outer circumferential surface of the second air guide cover 71 is further provided with a plurality of convex ribs 86, and the plurality of convex ribs 86 are spaced apart along the circumference of the second air guide cover 71, and the plurality of convex ribs 86 are spaced apart from the sixth limiter 85. Specifically, the plurality of convex ribs 86 are all provided on the outer circumferential surface of the second air guide cover 71, and when the user pulls the second air guide cover 71 to slide in a direction away from the second fan 31, the plurality of convex ribs 86 can increase the contact area between the user's hand and the second air guide cover 71 to play an anti-slip role. Among them, the plurality of convex ribs 86 are at least two, and illustratively, the plurality of convex ribs 86 can be, but not limited to, two, three, four, etc. Of course, in other embodiments, the outer circumferential surface of the second air guide cover 71 can also be provided with only one convex rib 86.

[0069] In some embodiments, the shell 10 is provided with a handle portion 16, and the handheld fan also includes a main control board 40 and a battery 41, the main control board 40 and the battery 41 are both installed in the handle portion 16, and the battery 41, the semiconductor cooling plate 21, the first fan 30 and the second fan 31 are all electrically connected to the main control board 40.

[0070] Specifically, the main control board 40 is used to control the switch of the handheld fan and adjust the power of the first fan 30, the second fan 31 and the semiconductor cooling sheet 21, and the battery 41 is used to provide power to the first fan 30, the second fan 31 and the semiconductor cooling sheet 21. In this embodiment, the handheld fan also includes a button 42, which is connected to the main control board 40 and exposed on the surface of the handle 16. The user can control the switch of the handheld fan by pressing the button 42, and can also adjust the gear of the handheld fan.

[0071] Optionally, the main control board 40 can individually control the semiconductor cooling sheet 21. Specifically, the user can individually control the semiconductor cooling sheet 21. Specifically, when the user controls the semiconductor cooling sheet 21 to be turned off, the first fan 30 and the second fan 31 can blow ambient air. When the user controls the semiconductor cooling sheet 21 to work, the first fan 30 can blow cold air and the second fan 31 can blow hot air, thereby meeting the different usage needs and usage environments of the user and improving the user's usage experience.

[0072] Specifically, when the handheld fan is in the off state, the user presses button 42 and the handheld fan will be turned on. At this time, the handheld fan is in the lowest gear. The user presses button 42 again to increase the gear of the handheld fan. The user presses button 42 again to increase the gear of the handheld fan again. Pressing button 42 again can increase the gear of the handheld fan to the highest gear. When the handheld fan is in the highest gear, the user presses button 42 again and the handheld fan will be turned off. At this time, the gear of the handheld fan is adjusted back to the lowest gear.

[0073] Different from the above-mentioned setting, in other embodiments, the handheld fan includes a switch button and a plurality of gear buttons, such as but not limited to: first gear, second gear, third gear, and fourth gear; the switch button and the plurality of gear buttons are connected to the main control board 40 and are exposed from the surface of the handle portion 16. At this time, the user can control the switch of the handheld fan by pressing the switch button. When the handheld fan is in the off state, the user presses the switch button and the handheld fan will be turned on. At this time, the user can adjust the handheld fan to the desired power gear by pressing the desired power gear for use, which is convenient and quick. At this time, the user presses the switch button to turn off the handheld fan, and the handheld fan remains at the gear adjusted before turning off.

[0074] In some embodiments, the handheld fan further includes a working indicator light 45, which is electrically connected to the main control board 40 and is exposed on the surface of the handle portion 16. Specifically, when the handheld fan is in operation, the working indicator light 45 can flash or remain in a bright state. When the handheld fan is in a closed state, the working indicator light 45 is off. The user can check the working indicator light 45 to determine whether the handheld fan is abnormal, thereby improving the user's experience. Of course, in other embodiments, the handheld fan may not be provided with a working indicator light 45.

[0075] In some embodiments, the handheld fan also includes a charging interface 43, which is electrically connected to the battery 41, and the charging interface 43 is exposed on the surface of the handle portion 16. It can be understood that the battery 41 of the present embodiment is a rechargeable battery 41. When the battery 41 is low on power, the user can charge it through the charging interface 43 without replacing the battery 41, which will not cause pollution, and is convenient for users to use, thereby improving the user experience. Exemplarily, the charging interface 43 can be but is not limited to: a Micro USB interface, a Lightning interface, and a Type-C interface. Of course, the design of the present application is not limited to this. In other embodiments, the handheld fan is not provided with a charging interface 43, and is used by replacing the battery 41.

[0076] Further, in some embodiments, the handheld fan also includes a charging indicator light 44, which is electrically connected to the main control board 40 and exposed on the surface of the handle portion 16. Specifically, when the handheld fan is at low power, the charging indicator light 44 will flash to remind the user. When the user charges it, the charging indicator light 44 will emit a bright light to remind the user that it is currently in a charging state. At the same time, the user can check whether the handheld fan is charging abnormally by checking the charging indicator light 44. When charging is completed, the charging indicator light 44 can switch to another light to remind the user that charging is complete. Exemplary, but not limited to, during the charging process, the charging indicator light 44 is a red light, and when charging is completed, the charging indicator light 44 is a green light. This application does not make specific limitations on this. Of course, in other embodiments, the handheld fan may not be provided with a charging indicator light 44.

[0077] In some embodiments, the handheld fan further includes a support ring 50 , a support plane is provided on a side of the handle portion 16 away from the housing 10 , and the support ring 50 is rotatably mounted on a portion of the handle portion 16 close to the support plane.

[0078] Specifically, when the user needs to place the handheld fan on the desktop for use, the support ring 50 can be rotated to the side of the handle portion 16. At this time, when the handheld fan is placed on the desktop, the support ring 50 can stably support the handheld fan on the desktop through a support point and through cooperation with the support plane, without the need to restrict it with external objects, thereby improving the user's experience. Of course, in other embodiments, the support ring 50 may not be provided.

[0079] In some embodiments, the shell 10 includes a front shell 13, a rear shell 14 and a partition plate 15. The partition plate 15 is installed in a cavity formed by the front shell 13 and the rear shell 14. A cold air duct 11 is formed between one side of the partition plate 15 and the front shell 13, and a hot air duct 12 is formed between the other side and the rear shell 14.

[0080] Specifically, in the process of assembling the handheld fan, the components can be first installed on the front shell 13 and the rear shell 14 respectively, and then the front shell 13 and the rear shell 14 are assembled, which can reduce the difficulty of assembling the handheld fan. At the same time, the front shell 13 and the rear shell 14 can be manufactured separately, which can reduce the difficulty of producing the housing 10. Of course, in other embodiments, the front shell 13 and the rear shell 14 are integrally formed.

[0081] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A handheld fan, characterized in that: include: The shell is provided with a cold air duct and a hot air duct separated from each other, and the cold air duct outlet and the hot air duct outlet are respectively arranged on opposite sides of the shell; A refrigeration device, comprising a semiconductor refrigeration sheet and two heat conducting components, wherein the semiconductor refrigeration sheet is arranged on the housing, wherein one of the heat conducting components is arranged on the cold air duct and is connected to the cold end of the semiconductor refrigeration sheet by heat conduction, and the other of the heat conducting components is arranged on the hot air duct and is connected to the hot end of the semiconductor refrigeration sheet by heat conduction; a first fan, which is disposed in the cold air duct and is used to drive the air flow to flow through the temperature conducting member and then flow out from the cold air duct outlet; as well as The second fan is arranged in the hot air duct, and is used for driving the air flow to flow through the temperature conducting component and then flow out from the air outlet of the hot air duct.

2. The handheld fan according to claim 1, characterized in that: The thermal conductive component includes a plate body and a plurality of thermal conductive sheets, wherein the plurality of thermal conductive sheets are arranged on the peripheral side of the plate body, and the plurality of thermal conductive sheets are distributed at intervals along the circumference of the plate body. The cold end and the hot end of the semiconductor refrigeration sheet are respectively connected to the plate body corresponding to the thermal conductive component through heat conduction.

3. The handheld fan according to claim 1, characterized in that: The air inlet and the air outlet of the cold air duct are arranged on the same side; and / or, The air inlet and the air outlet of the hot air duct are arranged on the same side.

4. The handheld fan according to claim 3, characterized in that: The shell is provided with a first mounting opening, the handheld fan further comprises a first air guide cover, the first air guide cover is provided at the first mounting opening, the first air guide cover comprises a first outer ring portion, a first inner ring portion and a connecting portion connected between the first inner ring portion and the first outer ring portion, the cold air duct outlet is formed between the first inner ring portion and the first outer ring portion, and the cold air duct inlet is formed in the first inner ring portion; the first inner ring portion abuts against an edge of the first fan; and / or, The shell is provided with a second mounting port, and the handheld fan also includes a second wind guide cover, which is provided at the second mounting port. The second wind guide cover includes a second outer ring portion, a second inner ring portion and a connecting portion connected between the second inner ring portion and the second outer ring portion, the hot air duct outlet is formed between the second inner ring portion and the second outer ring portion, and the hot air duct inlet is formed in the second inner ring portion; the second inner ring portion abuts against the edge of the second fan.

5. The handheld fan according to claim 1, characterized in that: The housing is provided with a first mounting opening, the handheld fan further comprises a first air guide cover, the first air guide cover is slidably mounted at the first mounting opening along an opening direction of the first mounting opening, the first air guide cover is provided with the cold air duct air outlet and air inlet; and / or, The shell is provided with a second mounting opening, and the handheld fan also includes a second air guide cover. The first air guide cover is slidably installed at the second mounting opening along the opening direction of the second mounting opening, and the second air guide cover is provided with the hot air duct outlet and air inlet.

6. The handheld fan according to claim 5, characterized in that: A first limiting portion and a second limiting portion are convexly provided on the duct wall of the cold air duct, the first limiting portion is located between the second limiting portion and the temperature conducting member, the first limiting portion and the second limiting portion both extend along the circumferential direction of the duct wall of the cold air duct, the first limiting portion and the second limiting portion are spaced apart, a third limiting portion is provided on the outer circumferential surface of the first air guide cover, and when the first air guide cover is slidably installed at the first installation opening, the third limiting portion is located between the first limiting portion and the second limiting portion; and / or, A fourth limiting portion and a fifth limiting portion are protrudingly provided on the duct wall of the hot air duct, the fourth limiting portion is located between the fifth limiting portion and the temperature conducting component, the fourth limiting portion and the fifth limiting portion both extend along the circumferential direction of the duct wall of the cold air duct, the fourth limiting portion and the fifth limiting portion are spaced apart, a sixth limiting portion is provided on the outer peripheral surface of the second air guide cover, and when the second air guide cover is slidably installed at the second installation port, the sixth limiting portion is located between the first limiting portion and the second limiting portion.

7. The handheld fan according to claim 6, characterized in that: A flexible layer is provided between the third limiting portion and the wall of the cold air duct; and / or, A flexible layer is provided between the sixth limiting portion and the air duct wall of the hot air duct.

8. The handheld fan according to claim 1, characterized in that: The shell is provided with a handle portion, and the handheld fan also includes a main control board and a battery. The main control board and the battery are both installed in the handle portion, and the battery, the semiconductor refrigeration sheet, the first fan and the second fan are all electrically connected to the main control board.

9. The handheld fan according to claim 8, characterized in that: The handheld fan further comprises a support ring. A support plane is provided on a side of the handle away from the housing. The support ring is rotatably mounted on a portion of the handle close to the support plane.

10. The handheld fan according to claim 1, characterized in that: The shell includes a front shell, a rear shell and a partition plate, wherein the partition plate is installed in a cavity formed by the front shell and the rear shell, wherein the cold air duct is formed between one side of the partition plate and the front shell, and the hot air duct is formed between the other side of the partition plate and the rear shell.

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