CN220522894U - Fan structure and lampblack absorber - Google Patents

Abstract

The application relates to the technical field of range hoods and provides a fan structure and range hood. The fan structure comprises an air duct, a casing and a motor; the motor is arranged in the cavity of the casing, and a heat conduction structure is connected between the motor and the casing; the air duct is sleeved on the outer side of the casing and connected with the casing, and a flow channel for gas circulation is formed between the casing and the air duct. The fan structure that this application provided can utilize heat conduction structure to transmit the heat that the motor produced to the receiver earlier, then takes away the heat that transmits to the receiver with the help of the air current in the dryer, realizes the stack heat dissipation of heat conduction and heat convection, has improved the radiating efficiency of motor.

Description

Fan structure and lampblack absorber

Technical Field

The application relates to the technical field of range hoods, in particular to a fan structure and a range hood.

Background

At present, in a fan for a range hood, heat is generated when a motor serving as a power source works, and in order to ensure that the motor can run for a long time, the motor needs to be effectively radiated, so that the problems of damage and the like caused by heat influence are prevented. However, in the related art, the motor is often installed in the casing to adjust a flow path for air flow using the arrangement of the casing, thereby adjusting the performance of the fan. However, such arrangement causes heat dissipation of the motor to be problematic.

Disclosure of Invention

Based on this, it is necessary to provide a fan structure that not only can transfer the heat generated by the motor to the outside of the casing, but also can utilize the air flow to assist in heat dissipation, thereby improving the heat dissipation efficiency.

A fan structure comprises an air duct, a casing and a motor; the motor is arranged in the cavity of the casing, and a heat conduction structure is connected between the motor and the casing; the air duct is sleeved on the outer side of the casing and connected with the casing, and a flow channel for gas circulation is formed between the casing and the air duct.

It is appreciated that the fan structure utilizes a heat transfer structure between the motor and the casing to facilitate transfer of heat generated by the motor to the casing; at this time, since the casing is connected to the wind tunnel with a flow passage for the flow of gas constructed therebetween, when the gas flows in the wind tunnel, it may pass through the flow passage to contact the casing, thereby taking away the heat transferred to the casing. That is, the fan structure that this application provided can utilize heat conduction structure to transmit the heat that the motor produced to the receiver earlier, then takes away the heat that transmits to the receiver with the help of the air current in the dryer, realizes heat conduction and heat convection's stack heat dissipation, has improved the radiating efficiency of motor.

In some of these embodiments, the heat conducting structure includes a plurality of heat dissipating fins, each of the heat dissipating fins being spaced about an axis of the motor, each of the heat dissipating fins being connected to the motor and the casing.

In some embodiments, the heat conduction structure further includes a sleeve, the sleeve is sleeved outside the motor, and one end of each heat dissipation fin, which is away from the casing, is connected with the sleeve.

In some of these embodiments, the motor has a housing; the inner cylinder wall of the sleeve is attached to the outer side wall of the shell, or the sleeve is configured as the shell, or the sleeve and the shell are integrally formed.

In some embodiments, the sleeve has a length along the axial direction of the motor that is 30% -100% of the axial length of the motor; and/or the sleeve is made of an aluminum alloy material; and/or one end of the sleeve, which faces to the output shaft of the motor, is connected with a reinforcing rib, and the reinforcing rib is connected with the casing.

In some of these embodiments, at least a portion of the heat dissipating fins are removably connected to the casing and/or the sleeve.

In some embodiments, the casing and/or the sleeve are configured with a plurality of assembly grooves, each assembly groove is arranged at intervals along the circumferential direction of the motor, and each radiating fin is clamped in the corresponding assembly groove.

In some embodiments, an annular space is enclosed between the inner cylinder wall of the air cylinder and the outer side wall of the casing; the fan structure further comprises a stator blade set, wherein the stator blade set is located in the annular space and connected with the casing and the air duct, and the stator blade set can divide the annular space into a plurality of flow channels which are arranged at intervals around the axis of the casing.

In some embodiments, the stator blade group includes stator blades arranged at intervals along the circumferential direction of the wind barrel, two ends of each stator blade along the radial direction of the wind barrel are respectively connected to the wind barrel and the casing, and a flow channel is defined between any two adjacent stator blades along the circumferential direction of the wind barrel.

The application also provides a range hood, which comprises the fan structure.

Drawings

In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings that are required to be used in the description of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic diagram of a fan structure according to an embodiment of the present disclosure;

FIG. 2 is a front view of the blower configuration provided in FIG. 1;

FIG. 3 is a cross-sectional view of A-A of FIG. 2;

FIG. 4 is a partial side view of a blower configuration provided in an embodiment of the present application;

FIG. 5 is a cross-sectional view of B-B of FIG. 4;

FIG. 6 is a partial front view of a blower configuration provided in an embodiment of the present application;

FIG. 7 is a cross-sectional view of C-C of FIG. 6;

fig. 8 is a cross-sectional view of D-D of fig. 6.

Reference numerals: 100. a fan structure; 10. an air duct; 11. a barrel cavity; 20. a casing; 30. a motor; 31. a housing; 32. an output shaft; 40. a heat conducting structure; 41. a heat radiation fin; 42. a sleeve; 43. reinforcing ribs; 60. a stationary blade group; 70. a rotor blade group; 61. stationary blades; 71. a rotor blade; 72. a support part; 73. a shroud; 101. an annular space; 201. a cavity; 1011. a flow channel; 4201. and (5) assembling the cavity.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used in the description of the present application for purposes of illustration only and do not represent the only embodiment.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be a direct contact of the first feature with the second feature, or an indirect contact of the first feature with the second feature via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.

Unless defined otherwise, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. The term "and/or" as used in the specification of this application includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 3, an embodiment of the present application provides a fan structure 100, which can transfer heat generated by a motor 30 to a wind drum 10, and take away heat by using gas flowing through the wind drum 10, so as to ensure the installation stability of the motor 30 and improve the heat dissipation efficiency of the motor 30. The fan structure 100 is described in detail below.

Referring to fig. 3, an exemplary fan structure 100 includes a fan casing 10, a casing 20, and a motor 30, wherein the motor 30 is installed in a cavity 201 of the casing 20, a heat conduction structure 40 is connected between the motor 30 and the casing 20, the fan casing 10 is sleeved outside the casing 20 and connected with the casing 20, and a flow channel 1011 for gas circulation is configured between the casing 20 and the fan casing 10.

In actual use, the fan structure 100 further includes a rotor blade set 70, where the rotor blade set 70 is connected to the motor 30 to rotate in the wind tunnel 10 for accelerating the airflow. During the process of driving the rotor blade group 70 by the motor 30, heat is generated by the work of the motor 30. At this time, since the heat conduction structure 40 is disposed between the motor 30 and the casing 20, the heat generated by the motor 30 can be transferred to the casing 20 to meet the heat dissipation requirement of the motor 30. Moreover, since the casing 20 is connected to the duct 10, a flow passage 1011 for gas flow is provided therebetween; therefore, when the gas flows along the flow channel 1011, the gas can contact with the casing 20 to take away the heat transferred to the casing 20, so as to reduce the temperature of the casing 20, thereby meeting the heat continuously transferred to the casing 20 through the heat conduction structure 40, and further improving the heat dissipation requirement of the motor 30.

As can be seen from the above, the fan structure 100 provided in this embodiment can transfer the heat generated by the motor 30 to the casing 20 by using the heat conduction structure 40, and meanwhile, take away the heat on the casing 20 by using the airflow in the air duct 10, so as to realize heat conduction and heat convection, and improve the heat dissipation efficiency of the motor 30.

It should be noted that, as shown in fig. 3, in actual use, the rotor blade set 70 includes a supporting portion 72, a shroud 73 and a plurality of rotor blades 71, the shroud 73 is disposed around the outer periphery of the supporting portion 72, each rotor blade 71 is disposed at intervals around the axis of the supporting portion 72 and is connected between the supporting portion 72 and the shroud 73, and the supporting portion 72 is in driving connection with the output shaft 32 of the motor 30. Wherein the support portion 72 is provided separately so that the support portion 72 is assembled with the output shaft 32; the portion of the support portion 72 connected to the rotor blade 71, and the shroud 73 may be integrally formed.

As shown in connection with fig. 3-7, in an alternative embodiment, the heat conducting structure 40 includes a plurality of heat dissipating fins 41, each heat dissipating fin 41 being spaced about the axis of the motor 30, each heat dissipating fin 41 being connected to the motor 30 and the casing 20. That is, by providing the plurality of heat radiating fins 41, the heat conduction area between the casing 20 and the motor 30 is increased, so that the heat generated by the motor 30 is more sufficiently transferred to the casing 20; moreover, due to the surrounding arrangement of the radiating fins 41, each position of the motor 30 along the axial direction corresponds to a region capable of conducting heat, and the radiating efficiency is further improved.

Further, each of the heat radiating fins 41 is located at a central portion or a position toward the central portion of the motor 30 in the axial direction of the motor 30. By the arrangement, the heat transfer paths of the motor 30 along the two ends of the motor are basically the same relative to the radiating fins 41, so that the uniformity of the distribution of the heat transfer paths is improved, and the heat transfer efficiency is improved. In an alternative embodiment, each of the heat dissipation fins 41 may be spaced apart at least two circumferences along the axial direction of the motor 30 to improve heat transfer efficiency.

With continued reference to fig. 3 to 7, the exemplary heat conduction structure 40 further includes a sleeve 42, the sleeve 42 is sleeved outside the motor 30, and an end of each heat dissipation fin 41 facing away from the casing 20 is connected to the sleeve 42. Specifically, the sleeve 42 defines a mounting cavity 4201, and the motor 30 is mounted within the mounting cavity 4201 and in close proximity to the cavity wall to satisfy heat transfer; in this way, the motor 30 is covered with the sleeve 42 along its circumferential direction, so as to perform heat transfer more fully. The heat generated by the motor 30 is transferred to the sleeve 42, transferred to the heat radiating fins 41 through the sleeve 42, and flows toward the casing 20. In actual use, the sleeve 42 is sleeved outside the shell 31 of the motor 30 and is tightly attached to the shell 31, so that the heat transfer efficiency is improved; at this time, a heat-conducting glue may be further disposed between the sleeve 42 and the casing 31, and the heat-conducting glue may fill the gap between the sleeve 42 and the casing 31, so as to reduce the thermal resistance of air, and further improve the heat dissipation efficiency.

In an alternative embodiment, the sleeve 42 may be directly used as the casing 31 of the motor 30, and no other structure is needed for heat conduction, so that the heat generated by the stator in the motor 30 can be directly transferred to the sleeve 42, thereby improving the heat dissipation efficiency. Alternatively, the sleeve 42 is integrally formed with the housing 31, so that the thermal resistance during the fitting is reduced, and the heat dissipation efficiency is improved. The heat dissipation device is only exemplified here, and the heat dissipation device can increase the heat conduction area and improve the heat dissipation efficiency.

In yet another alternative embodiment, the heat transfer structure 40 includes a plurality of heat dissipating ribs protruding from the outer wall of the motor 30, each of the heat dissipating ribs being connected to the casing 20 for heat transfer.

In an alternative embodiment, the sleeve 42 is 30% -100% of the axial length of the motor 30 along the axial length of the motor 30. It will be appreciated that the length of the sleeve 42 in the axial direction of the motor 30 is defined to meet the heat transfer area of the sleeve 42 and the motor 30. The greater the axial length of the sleeve 42, the greater the contact area with the motor 30, the greater the heat transfer efficiency; the smaller the axial length of the sleeve 42, the smaller the contact area with the motor 30, and the lower the heat transfer efficiency. Of course, the axial length of the sleeve 42 should not be too large, which would otherwise interfere with the assembly of the casing 20, affecting the stability of the installation of the motor 30. In some embodiments, the length of the sleeve 42 along the axial direction of the motor 30 is 30%, 50%, 90% or 100% of the axial length of the motor 30, and specific values may be adjusted according to practical needs by way of example only.

In actual assembly, the sleeve 42 is connected to the casing 20 at one end thereof facing the output shaft 32 of the motor 30 in the axial direction of the motor 30. It will be appreciated that since the output shaft 32 of the motor 30 needs to be connected to the rotor blade set 70 through the casing 20, this is equivalent to improving the structural strength of the output shaft end when the sleeve 42 is connected to the casing 20. Moreover, along the direction of the air flow in the air duct 10, the output shaft end is obviously the forward windward side; therefore, the output shaft end of the case 20 and the motor 30 needs to have good structural strength to improve the bearing capacity. Therefore, such an arrangement can improve the structural strength of the entire casing 20 on the windward side. Meanwhile, one end of the sleeve 42 along the axial direction of the motor 30 is connected with the casing 20, and heat transfer can be performed along the axial direction of the motor 30, so that the heat dissipation efficiency is improved. Furthermore, this arrangement can satisfy the fitting positioning of the sleeve 42 with respect to the motor 30.

Further, the sleeve 42 is made of aluminum alloy. The aluminum alloy material is convenient to manufacture and form, and has higher heat conduction coefficient so as to fully transfer heat.

As shown in fig. 8, a reinforcing rib 43 is further provided at an end of the sleeve 42 facing the output shaft 32, and one end of the reinforcing rib 43 in the axial direction of the sleeve 42 is fixed to the casing 20, thereby improving the structural strength on the windward side. Wherein, the number of the reinforcing ribs 43 is a plurality, and each reinforcing rib 43 is arranged at intervals along the circumferential direction of the sleeve 42 to ensure uniform stress.

As shown in fig. 7, each of the heat radiating fins 41 is detachably connected to the casing 20 and the sleeve 42, for example. Such arrangement is convenient for the disassembly, the assembly and the replacement among the structures, is convenient for maintenance and reduces the cost. Specifically, a plurality of assembly grooves are formed in the cavity wall of the casing 20 and the outer wall of the sleeve 42, the assembly grooves are arranged at intervals along the circumferential direction of the motor 30, and each heat dissipation fin 41 is clamped in the corresponding assembly groove. Wherein, along the radial direction of the motor 30, the assembly grooves of the casing 20 are in one-to-one correspondence with the assembly grooves on the sleeve 42, and correspond to one heat dissipation fin 41.

Further, at least one end of each fitting groove in the own length direction penetrates through the casing 20 or the sleeve 42, that is: at least one end of the assembly groove along the length direction of the assembly groove is provided with a through hole, so that each radiating fin 41 can slide into the corresponding assembly groove from the through hole, and the assembly convenience is further improved. In some embodiments, the sleeve 42 and the corresponding mounting groove on the casing 20 are vented at an end facing away from the rotor blade set 70. The casing 20 is separately arranged to meet the assembly of the motor 30 and each radiating fin 41 relative to the casing 20.

In an alternative embodiment, the casing 20 is integrally formed with each fin 41, and the sleeve 42 is detachably connected to each fin 41. At this time, the assembling grooves on the sleeve 42 are formed as openings toward one end of the rotor blade group 70, and the sleeve 42 slides along the motor 30 from the tail end of the casing 20 toward one end close to the rotor blade group 70, thereby assembling the sleeve 42 and the heat dissipating fins 41. Regardless of how it is provided that it can be assembled and disassembled with ease, only illustrative examples are given herein.

In yet another alternative embodiment, the casing 20, the sleeve 42 are integrally formed with each of the heat dissipating fins 41. Alternatively, the casing 20 and the sleeve 42 are integrally formed, and the respective heat dissipation fins 41 are detachably connected to the casing 20 and the sleeve 42 through fitting grooves. Alternatively, only part of the heat radiating fins 41 may be integrally formed with the casing 20 and the sleeve 42, and the other part may be detachably connected with the casing 20 and the sleeve 42. The specific design is adjusted according to the actual requirements, and is only exemplified herein.

Referring to fig. 3, 4, 5, 7 and 8, an annular space 101 is illustratively defined between the inner wall of the air duct 10 and the outer wall of the casing 20. The fan structure 100 further includes a stator vane set 60, where the stator vane set 60 is located in the annular space 101 and is connected to the casing 20 and the duct 10, and the stator vane set 60 can partition the annular space 101 into a plurality of flow channels 1011 spaced around the axis of the casing 20. It will be appreciated that the air duct 10 has a chamber 11 with two open ends, and the casing 20 is mounted in the chamber 11, so that an annular space 101 is defined between the air duct 10 and the casing 20 to ensure the normal flow of air in the air duct 10. At this time, when the stator blade group 60 is mounted in the annular space 101, it is possible to divide the annular space, and the cross section of the air flowing in the duct 10 can be changed while the air circulation is satisfied, thereby increasing the air pressure.

In actual use, the stator blade set 60 includes a plurality of stator blades 61 arranged at intervals along the circumferential direction of the wind barrel 10, and two ends of each stator blade 61 along the radial direction of the wind barrel 10 are respectively connected to the wind barrel 10 and the casing 20; in addition, a flow channel 1011 is defined between any two adjacent stator blades 61 along the circumferential direction of the wind tunnel 10. In this way, when the heat is transferred to the casing 20 by using the plurality of heat dissipating fins 41, since the plurality of flow channels 1011 are distributed on the outer periphery of the casing 20, the air flow flowing through each flow channel 1011 can contact with the corresponding area on the casing 20 to take away the heat. Further, since the plurality of stator blades 61 are provided, heat conduction can be performed, that is: not only the plurality of stator blades 61 may be used for airflow pressurization, but also may be a structure of heat conduction. Therefore, each stator blade 61 can be filled with heat, each stator blade 61 can also transfer heat to the wind barrel 10, and when the airflow passes through the flow channel 1011, the airflow can be contacted with the wind barrel 10 and the stator blades 61 to take away heat, so that the heat dissipation efficiency is further improved.

In an alternative embodiment, each fin 41 corresponds to one stator blade 61 in the radial direction of the motor 30; alternatively, one stator blade 61 is provided between any adjacent two of the heat radiating fins 41; still alternatively, the projection of each fin 41 in the radial direction of the motor 30 is at least partially overlapped with the projection of one stator blade 61 in the radial direction of the motor 30. The heat dissipation efficiency can be improved regardless of how the heat dissipation fins 41 are provided to the stator blades 61.

It should be noted that the wind tunnel 10 may be separately disposed, so as to facilitate assembly of the casing 20, the rotor blade group 70, the stator blade group 60, and the like.

As shown in fig. 1 to 3, a further embodiment of the present application provides a range hood, including a bellows and the fan structure 100 described above, the fan structure 100 is installed in the bellows, and the operation of the fan structure 100 is used to suck the indoor fume to the outside. In the process of exhausting the fume, as the heat conduction structure 40 is arranged between the motor 30 and the casing 20, the heat generated by the motor 30 can be transferred to the casing 20 so as to meet the heat dissipation requirement of the motor 30; and, utilize the stator blade group 60 that connects between receiver 20 and dryer 10, further utilize the air current to take away the heat on the receiver 20, realize heat conduction and the stack heat dissipation of heat convection, improve the radiating efficiency of motor 30. The fan structure 100 may be used in a mixed flow fan or an axial flow fan, for example only.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of the present application is to be determined by the following claims.

Claims (10)

1. A fan structure, characterized in that the fan structure (100) comprises a wind barrel (10), a casing (20) and a motor (30);

the motor (30) is arranged in a cavity (201) of the casing (20), and a heat conduction structure (40) is connected between the motor (30) and the casing (20); the air duct (10) is sleeved on the outer side of the casing (20) and is connected with the casing (20), and a flow channel (1011) for gas circulation is formed between the casing (20) and the air duct (10).

2. The fan structure according to claim 1, characterized in that the heat conduction structure (40) includes a plurality of heat radiating fins (41), each of the heat radiating fins (41) being arranged at intervals around the axis of the motor (30), each of the heat radiating fins (41) being connected to the motor (30) and the casing (20).

3. The fan structure according to claim 2, wherein the heat conduction structure (40) further comprises a sleeve (42), the sleeve (42) is sleeved outside the motor (30), and one end of each heat dissipation fin (41) facing away from the casing (20) is connected with the sleeve (42).

4. A fan structure according to claim 3, characterized in that the motor (30) has a housing (31);

the inner cylinder wall of the sleeve (42) is adhered to the outer side wall of the shell (31), or the sleeve (42) is configured as the shell (31), or the sleeve (42) and the shell (31) are integrally formed.

5. The fan structure according to claim 4, characterized in that the sleeve (42) has a length along the axial direction of the motor (30) of 30% -100% of the axial length of the motor (30); and/or the sleeve (42) is made of aluminum alloy material; and/or one end of the sleeve (42) facing the output shaft (32) of the motor (30) is connected with a reinforcing rib (43), and the reinforcing rib (43) is connected with the casing (20).

6. A fan structure according to claim 3, characterized in that at least part of the heat radiating fins (41) are detachably connected with the casing (20) and/or the sleeve (42).

7. The fan structure according to claim 6, characterized in that the casing (20) and/or the sleeve (42) are configured with a plurality of fitting grooves, each of which is arranged at intervals along the circumferential direction of the motor (30), and each of the heat radiating fins (41) is caught in the corresponding fitting groove.

8. The fan structure according to any one of claims 1 to 7, characterized in that an annular space (101) is enclosed between the inner cylinder wall of the air duct (10) and the outer side wall of the casing (20);

the fan structure (100) further comprises a stator blade group (60), the stator blade group (60) is located in the annular space (101) and connected with the casing (20) and the wind barrel (10), and the stator blade group (60) can divide the annular space (101) into a plurality of flow channels (1011) which are arranged at intervals around the axis of the casing (20).

9. The fan structure according to claim 8, wherein the stator blade group (60) includes stator blades (61) arranged at intervals along the circumferential direction of the wind tunnel (10), each stator blade (61) is connected to the wind tunnel (10) and the casing (20) at both ends in the radial direction of the wind tunnel (10), and the flow passage (1011) is defined between any adjacent two stator blades (61) along the circumferential direction of the wind tunnel (10).

10. A range hood, characterized in that it comprises a fan structure according to any one of claims 1 to 9.