Multi-stage fan device and portable fan

Abstract

The utility model provides a multi-stage fan device and a portable fan. The multi-stage fan device blows air to a human body and also blows air to a radiator. The multi-stage fan device comprises a shell, a first-stage fan assembly and a second-stage fan assembly. An air cavity is formed in the shell. The first-stage fan assembly is arranged in the air cavity, the second-stage fan assembly is arranged in the air cavity, and the second-stage fan assembly communicates with the first-stage fan assembly. Through the first-stage fan assembly and the second-stage fan assembly, the heat dissipation requirements of the human body and the radiator can be met, the air volume and the air speed blown to the human body by the multi-stage fan device can be increased, the heat dissipation effect of the radiator can be improved, and the refrigeration effect of the whole multi-stage fan device can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, in particular to a multi-stage fan device and a portable fan. Background Art

[0002] Most of the current multi-stage fan devices include a single-stage fan, a radiator, a refrigerator and a skin-contacting part. The skin-contacting part is in contact with the human body and transfers heat to the refrigerator. The refrigerator cools the body on the side facing the human body and conducts heat on the side facing the radiator. The radiator then dissipates the heat. The single-stage fan has to blow air toward both the human body and the radiator, and cannot take into account the heat dissipation needs of the human body and the radiator. The air volume is small, resulting in poor cooling effect of the multi-stage fan device. Utility Model Content

[0003] The main purpose of the present application is to provide a multi-stage fan device to solve the technical problems of the existing multi-stage fan device having a small air blowing volume and a poor cooling effect.

[0004] In a first aspect, embodiments of the present application provide a multi-stage fan device comprising a housing, a primary fan assembly, and a secondary fan assembly. The housing has an interior formed with an air cavity, the primary fan assembly is disposed within the air cavity, and the secondary fan assembly is disposed within the air cavity, the secondary fan assembly being connected to the primary fan assembly.

[0005] In some embodiments, the primary fan assembly includes a primary containment body, the secondary fan assembly includes a secondary containment body, and the primary containment body is connected to the secondary containment body.

[0006] In some embodiments, both ends of the primary container extend to the cavity wall of the wind cavity respectively, a gap is formed between the secondary container and the cavity wall of the wind cavity, and the secondary container is connected to the wind cavity through the gap.

[0007] In some embodiments, the shell is provided with an air inlet, which is connected to the primary container.

[0008] In some embodiments, the shell is provided with an air outlet, which is connected to the secondary container. The secondary container includes a secondary volute and a guide member. One end of the guide member is connected to the secondary volute, and the other end of the guide member is connected to the air outlet.

[0009] In some embodiments, the air guide is provided with an air outlet, and the air guide is connected to the air cavity through the air outlet.

[0010] In some embodiments, the multi-stage fan device further includes a radiator, and the radiator is provided at a position of the wind cavity corresponding to the position of the guide member, and the radiator is connected to the exhaust port of the guide member.

[0011] In some embodiments, the guide direction of the guide member forms an angle α with the extension direction of the air outlet, and the angle α ranges from 20 degrees to 70 degrees.

[0012] In some embodiments, the wind direction of the primary fan assembly is the same as the wind direction of the secondary fan assembly.

[0013] In some embodiments, the first-level fan assembly further includes a first-level fan, which is disposed in the first-level container, and the second-level fan assembly further includes a second-level fan, which is disposed in the second-level container.

[0014] In some embodiments, the multi-stage fan device further includes a radiator, which is disposed in the wind cavity. The shell is provided with a heat dissipation port, and the radiator is connected to the heat dissipation port.

[0015] In some embodiments, the multi-stage fan device further includes a skin-contacting member, which is disposed on the housing; the radiator includes a heat dissipation fin and a refrigerator, which is disposed between the heat dissipation fin and the skin-contacting member.

[0016] A multi-stage fan device provided in an embodiment of the present application is arranged in a shell, and the first-stage fan assembly and the second-stage fan assembly of the multi-stage fan device are connected. The first-stage fan assembly and the second-stage fan assembly blow air toward both the human body and the radiator. The wind speed and air volume of the first-stage fan assembly and the second-stage fan assembly can take into account the heat dissipation requirements of the human body and the radiator. The air volume and wind speed blown toward the human body by the multi-stage fan device will increase, the heat dissipation effect of the radiator will be improved, and the cooling effect of the entire multi-stage fan device will be improved.

[0017] On the other hand, an embodiment of the present application provides a portable fan, which includes a base and a multi-stage fan device. There are two multi-stage fan devices, and the two multi-stage fan devices are respectively connected to the two ends of the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0019] Figure 1 A schematic structural diagram of a multi-stage fan device provided in an embodiment of the present application;

[0020] Figure 2 A schematic structural diagram of a multi-stage fan device provided in an embodiment of the present application;

[0021] Figure 3 for Figure 1 A cross-sectional view of a multi-stage fan device shown;

[0022] Figure 4 for Figure 1 A partial cross-sectional view of the multi-stage fan device shown;

[0023] Figure 5 for Figure 1 A schematic structural diagram of the secondary container shown;

[0024] Figure 6 An exploded view of a multi-stage fan device along the second direction Z provided in an embodiment of the present application.

[0025] Reference numerals: 1- portable fan; 1000- multi-stage fan device; 100- housing; 10- air cavity; 20- air inlet; 21- air inlet hole; 30- air outlet; 31- air outlet hole; 40- heat dissipation vent; 50- top wall; 60- bottom wall; 70- outer wall; 80- inner wall; 81- mounting port; 90- U-shaped wall; 210- first-stage fan assembly; 211- first-stage fan; 212- first-stage container; 220- second-stage fan assembly; 221- second-stage fan; 222- second-stage container; 222 1-secondary vortex casing; 2222-flow guide; 2222a-exhaust port; 2222b-side panel; 2222c-bottom panel; 2222d-blocking plate; 2223-gap; 300-radiator; 310-heat dissipation fins; 320-refrigerator; 321-semiconductor refrigeration element; 322-thermal conductive gel layer; 400-skin-fitting element; 410-through hole; 500-electrical control device; 510-circuit board; 520-power supply; 2000-base component; X-first direction; Y-flow guide direction; Z-second direction.

[0026] The purpose, features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0028] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is mutually 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 this application.

[0030] The portable fan 1 provided in the embodiment of the present application can be applied to various occasions. For example, the portable fan 1 can be hung around the neck of a person to dissipate heat for the person. The following embodiment takes the portable fan 1 as an example of a neck-hanging fan for use on a person.

[0031] The portable fan 1 provided in the embodiment of the present application can be applied to various occasions. For example, the portable fan 1 can be hung around the neck of a person to dissipate heat for the person. The following embodiment takes the portable fan 1 as an example of a neck-hanging fan for use on a person.

[0032] First, please refer to Figure 1 and Figure 2 , Figure 1 and Figure 2 These are schematic diagrams of the structure of a portable fan 1 provided in an embodiment of the present application. Figure 3 for Figure 1 The portable fan 1 is shown in a cross-sectional view. The fan comprises a base member 2000 and a multi-stage blower assembly 1000. Two multi-stage blower assemblies 1000 are provided, connected to the base member 2000 at either end. The structure of the base member 2000 is not limited. If the portable fan 1 is a neck-hanging fan, the base member 2000 is a hollow, elastic structure shaped to conform to the human neck, and is connected to the multi-stage blower assembly 1000.

[0033] On the other hand, the structure of the multi-stage fan device 1000 is not limited. The embodiment of the present application provides a multi-stage fan device 1000, which includes a housing 100, a primary fan assembly 210, and a secondary fan assembly 220. A wind cavity 10 is formed inside the housing 100, and the multi-stage fan device 1000 is disposed in the wind cavity 10. The secondary fan assembly 220 is connected to the primary fan assembly 210. The primary fan assembly 210 is connected to the secondary fan assembly 220, which means that the secondary fan assembly 220 can receive the wind generated by the primary fan assembly 210. The primary fan assembly 210 and the secondary fan assembly 220 are connected in series to form a turbocharging effect.

[0034] The first-stage fan assembly 210 and the second-stage fan assembly 220 blow air toward both the human body and the radiator 300. The wind speed and air volume of the first-stage fan assembly 210 and the second-stage fan assembly 220 can take into account the heat dissipation requirements of the human body and the radiator 300. The air volume and wind speed blown toward the human body by the multi-stage fan device 1000 will increase, the heat dissipation effect of the radiator 300 will be improved, and the cooling effect of the entire multi-stage fan device 1000 will be improved.

[0035] It should be noted that the multi-stage fan device 1000 may include a primary fan assembly 210 and a secondary fan assembly 220, or may include a primary fan assembly 210, a secondary fan assembly 220, a tertiary fan assembly, and so on. The number of fan assemblies may be no less than two. Furthermore, the manner in which the primary fan assembly 210 and the secondary fan assembly 220 are connected is not limited. For details, please refer to the following embodiments.

[0036] The shell 100 includes a top wall 50 , a bottom wall 60 , an outer wall 70 , an inner wall 80 and a U-shaped wall 90 , and the air cavity 10 is formed by the top wall 50 , the bottom wall 60 , the outer wall 70 , the inner wall 80 and the U-shaped wall 90 .

[0037] In some embodiments, please refer to Figure 1 The housing 100 is provided with an air inlet 20, which is connected to the primary container 212. The number of air inlets 20 and their locations within the housing 100 are not limited. Preferably, there are two air inlets 20, one located on the inner sidewall 80 of the housing 100, corresponding to the primary container 212, and the other located on the outer sidewall 70 of the housing 100, corresponding to the primary container 212. The two air inlets 20 are arranged opposite each other. Each air inlet 20 includes a plurality of air inlet holes 21, which are arranged in a circle to form the air inlet 20.

[0038] In some embodiments, please refer to Figure 4 , Figure 4 for Figure 1In the partial cross-sectional view of the portable fan 1 shown, the primary fan assembly 210 includes a primary housing 212, and the secondary fan assembly 220 includes a secondary housing 222, with the primary housing 212 being connected to the secondary housing 222. Specifically, the primary fan assembly 210 also includes a primary fan 211, which is disposed within the primary housing 212, and the secondary fan assembly 220 also includes a secondary fan 221, which is disposed within the secondary housing 222. The primary housing 212 is capable of directing the air generated by the primary fan 211 into the secondary housing 222, allowing both the air generated by the primary fan 211 and the secondary fan 221 to be discharged from the secondary housing 222.

[0039] Preferably, the primary fan assembly 210 and the secondary fan assembly 220 have the same wind direction. The air volume of the multi-stage fan device 1000 is the sum of the air volumes generated by the primary fan assembly 210 and the secondary fan assembly 220, thereby improving the cooling effect of the multi-stage fan device 1000. It should be noted that the primary fan assembly 210 and the secondary fan assembly 220 can achieve the same wind direction through the primary containment body 212 and the secondary containment body 222, or the primary fan assembly 210 and the secondary fan assembly 220 can also achieve the same wind direction through the primary fan 211 and the secondary fan 212, which is not limited here.

[0040] The container can be of various structures, which are not limited in this embodiment. Figure 2 The two ends of the primary container 212 extend to the cavity wall of the air cavity 10 respectively, and the secondary container 222 forms a gap 2223 with the cavity wall of the air cavity 10. The secondary container 222 is connected to the air cavity 10 through the gap 2223. Figure 4 The primary containment body 212 is a volute, and both the primary containment body 212 and the secondary containment body 222 extend in the direction from the outer wall 70 of the housing 100 toward the inner wall 80, or vice versa. When the primary containment body 212 is a volute, gas entering along its extension direction can be discharged tangentially along its outer circumference, while simultaneously increasing the air velocity to supply air to the secondary containment body 222.

[0041] In some embodiments, please refer to Figure 1 and Figure 3The housing 100 is provided with an air outlet 30. The secondary container 222 includes a secondary volute 2221 and a guide member 2222. One end of the guide member 2222 is connected to the secondary volute 2221, and the other end of the guide member 2222 is connected to the air outlet 30. The guide member 2222 can guide the wind generated by the primary fan 211 and the secondary fan 221 from the secondary container 222 to the air outlet 30 for discharge. The position of the air outlet 30 in the housing 100 is not limited. Preferably, the air outlet 30 is limited to be opened at the position of the top wall 50 of the housing 100 corresponding to the secondary fan assembly 220, so that the direction of the air blown by the multi-stage fan device 1000 is toward the human body. The air outlet 30 is located on the top wall 50 of the housing 100, so that the wind blown by the multi-stage fan device 1000 can blow toward the human body. In addition, the structure of the air outlet 30 is not limited. Preferably, the air outlet 30 includes a plurality of air outlet holes 31 , and the air outlet holes 31 are long strips.

[0042] In some embodiments, please refer to Figure 3 The guide member 2222 is provided with an exhaust port 2222a, which is connected to the air cavity 10 through the exhaust port 2222a. The exhaust port 2222a of the guide member 2222 can discharge part of the air generated by the primary fan 211 and the secondary fan 221 into the air cavity 10. The structure of the guide member 2222 is not limited, and the position of the exhaust port 2222a on the guide member 2222 is not limited. Preferably, the guide member 2222 includes a bottom plate 2222c and a side plate 2222b, wherein the bottom plate 2222c is connected to the side plate 2222b, and the exhaust port 2222a is provided on the bottom plate 2222c and is connected to the air cavity 10.

[0043] In some embodiments, please refer to Figure 5 , Figure 5 for Figure 1 The schematic diagram of the structure of the secondary container 222 is shown. The flow direction of the deflector 2222 forms an angle α with the extension direction X of the air outlet, and the angle α ranges from 20 degrees to 70 degrees. Setting the angle α in the range of 20 degrees to 70 degrees enables the deflector 2222 to guide the air entering the deflector 2222 toward the human body. Preferably, the flow direction of the deflector 2222 is the extension direction of the bottom plate 2222c of the deflector 2222. It should be noted that in this embodiment, the extension direction X of the air outlet is parallel to the extension direction of the side plates 2222b of the deflector 2222. The direction of the side plates 2222b of the deflector 2222 is also parallel to the extension direction of the air outlet 30 provided on the top wall 50 of the housing 100. The deflector 2222 also includes a blocking plate 2222d, which can guide the air within the deflector 2222 toward the human body while preventing it from flowing back.

[0044] In some embodiments, please refer to Figure 4 The multi-stage fan device 1000 further includes a radiator 300 disposed within the air cavity 10. The housing 100 defines a heat dissipation vent 40, and the radiator 300 is connected to the heat dissipation vent 40. The location of the heat dissipation vent 40 within the housing is not limited. Preferably, the heat dissipation vent 40 is disposed on the outer wall 70 of the housing 100 at a location corresponding to the heat dissipation vent 300, facilitating heat dissipation from the radiator 300. The heat dissipation vent 40 allows the radiator 300 to dissipate its own heat.

[0045] The position of the radiator 300 in the air cavity 10 is not limited. Preferably, the radiator 300 is provided at the position of the air cavity 10 corresponding to the position of the air guide 2222, and the radiator 300 is connected to the air outlet 2222a of the air guide 2222. The air guide 2222 can partially blow the air generated by the primary fan assembly 210 and the secondary fan assembly 220 toward the radiator 300 through the air outlet 2222a. The air guide 2222 can partially guide the air to the radiator 300 so that the air can remove heat from the radiator 300.

[0046] The structure of the radiator 300 is not limited. For example, please continue to refer to Figure 4 The heat sink 300 includes a heat dissipation fin 310 and a refrigerator 320. The refrigerator 320 can be in various forms. For example, the refrigerator 320 is a semiconductor refrigerator 320.

[0047] Take the semiconductor cooler 320 as an example for explanation, please refer to Figure 6 , Figure 6 An exploded view of the portable fan 1 along the second direction Z provided in some embodiments of the present application, wherein the cooler 320 includes a semiconductor cooling element 321 and a thermally conductive gel layer 322 , wherein the semiconductor cooling element 321 has a side close to the radiator 300 and a side of the radiator 300 , and both sides are coated with the thermally conductive gel layer 322 .

[0048] In some embodiments, please refer to Figure 6 The multi-stage fan device 1000 also includes a skin-applying member 400, which is disposed on the inner sidewall 80 of the housing 100. The heat sink 300 includes a heat dissipation fin 310 and a refrigerator 320, which is disposed between the heat dissipation fin 310 and the skin-applying member 400. The housing 100 has a mounting opening 81, and the refrigerator 320 partially extends beyond the mounting opening 81. The skin-applying member 400 receives heat from the human skin and transfers it to the semiconductor cooling member 321 through the thermally conductive gel layer 322. The semiconductor cooling member 321 cools on the side facing the skin-applying member 400 and heats on the side facing away from the skin-applying member 400. The thermally conductive gel layer 322 transfers heat from the semiconductor cooling member 321 to the heat dissipation fin 310. The skin-applying member 400 has a through hole 410 that communicates with the air inlet 20 provided on the inner sidewall 80 of the housing 100.

[0049] In some embodiments, please refer to Figure 6 The multi-stage fan device 1000 further includes an electronic control device 500, which is disposed within the air cavity 10. The electronic control device 500 includes a circuit board 510 and a power supply 520. The power supply 520 is electrically connected to the circuit board 510, the semiconductor cooler 320 is electrically connected to the circuit board 510, and the primary fan 211 and the secondary fan 221 are electrically connected to the circuit board 510. The circuit board 510 can control the cooling or heating of the semiconductor cooler 320, and can also control the start or stop of the primary fan 211 and the secondary fan 221.

Claims

1. A multi-stage fan device, characterized in that: include: A shell body, wherein a wind cavity is formed inside; A primary fan assembly is arranged in the wind cavity; A secondary fan assembly is arranged in the wind cavity; The secondary fan assembly is connected to the primary fan assembly; The primary fan assembly includes a primary containment body, the secondary fan assembly includes a secondary containment body, and the primary containment body is connected to the secondary containment body; Two ends of the primary container respectively extend to the cavity wall of the wind cavity, and a gap is formed between the secondary container and the cavity wall of the wind cavity. The secondary container is connected with the wind cavity through the gap.

2. The multi-stage fan device according to claim 1, characterized in that: The shell is provided with an air inlet, and the air inlet is connected to the first-level containing body.

3. The multi-stage fan device according to claim 1, characterized in that: The shell is provided with an air outlet, and the air outlet is connected to the secondary container. The secondary container includes a secondary volute and a guide member. One end of the guide member is connected to the secondary volute, and the other end of the guide member is connected to the air outlet.

4. The multi-stage fan device according to claim 3, characterized in that: The guide member is provided with an air outlet, and the guide member is connected to the air cavity through the air outlet.

5. The multi-stage fan device according to claim 4, characterized in that: The multi-stage fan device also includes a radiator, and the radiator is arranged at the position of the wind cavity corresponding to the position of the guide member, and the radiator is connected to the exhaust port of the guide member.

6. The multi-stage fan device according to claim 3, characterized in that: The guide direction of the guide member and the extension direction of the air outlet form an angle α, and the angle α ranges from 20 degrees to 70 degrees.

7. The multi-stage fan device according to claim 1, characterized in that: The wind direction of the first-level fan assembly is the same as the wind direction of the second-level fan assembly.

8. The multi-stage fan device according to claim 1, characterized in that: The primary fan assembly further includes a primary fan, which is disposed in the primary containment body. The secondary fan assembly further includes a secondary fan, which is disposed in the secondary containment body.

9. The multi-stage fan device according to claim 1 or 5, characterized in that: The multi-stage fan device also includes a radiator, which is arranged in the wind cavity. The shell is provided with a heat dissipation port, and the radiator is connected to the heat dissipation port.

10. The multi-stage fan device according to claim 9, characterized in that: The multi-stage fan device also includes a skin-contacting member, which is arranged on the shell. The radiator includes a heat dissipation fin and a refrigerator, which is arranged between the heat dissipation fin and the skin-contacting member.

11. A portable fan, characterized in that: include: Base parts; According to the multi-stage fan device according to any one of claims 1 to 10, there are two multi-stage fan devices, and the two multi-stage fan devices are respectively connected to two ends of the base member.

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