CN114109912A - Air inlet device and refrigeration equipment - Google Patents
Air inlet device and refrigeration equipment Download PDFInfo
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- CN114109912A CN114109912A CN202010905558.XA CN202010905558A CN114109912A CN 114109912 A CN114109912 A CN 114109912A CN 202010905558 A CN202010905558 A CN 202010905558A CN 114109912 A CN114109912 A CN 114109912A
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- Prior art keywords
- air
- guide ring
- air guide
- impeller
- bottom plate
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 230000007704 transition Effects 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000004308 accommodation Effects 0.000 abstract 1
- 238000007790 scraping Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/626—Mounting or removal of fans
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to an air inlet device and refrigeration equipment, wherein the air inlet device comprises an impeller and an air guide mechanism, the impeller comprises a mounting disc and a plurality of blades, and the plurality of blades are connected to the mounting disc in a cyclone shape; the air guide mechanism comprises a bottom plate, an air guide ring and a plurality of support columns, an air inlet is formed in the air guide ring, the air guide ring is connected with the bottom plate through the plurality of support columns, an accommodating space is formed between the air guide ring and the bottom plate, and an air outlet communicated with the accommodating space is formed in the circumferential direction of the air guide mechanism; the impeller is located accommodation space, and is provided with air current clearance between wind-guiding circle and the impeller. The air inlet device provided by the invention has the advantages that the possibility of deformation of the air guide ring is reduced or avoided by arranging the air guide ring and the bottom plate which are connected by utilizing the support column, so that the increase of the width of the gap between the air guide ring and the impeller is avoided, and the problem of air inlet loss caused by deformation of the air guide ring in the prior art is solved.
Description
Technical Field
The invention belongs to the technical field of household appliances, and particularly relates to an air inlet device and refrigeration equipment.
Background
This section provides background information related to the present disclosure only and is not necessarily prior art.
The air-cooled refrigeration equipment distributes cold air to each compartment through an air duct, centrifugal fans are generally adopted by refrigeration equipment with complex air duct structures and large air duct resistance, the centrifugal fans are high in lift, and air flow flows in along the axial direction of the centrifugal fans and is thrown to the edge of an impeller under the action of centrifugal force.
A wind guide ring is usually disposed near the air inlet to guide the airflow into the centrifugal fan. However, in the using process, the air guide ring is blown by the air flow and gradually deforms, the gap between the air guide ring and the impeller is easily increased, and the increased gap can cause the loss of cold air from the gap, further cause the loss of air inlet amount and reduce the working efficiency of the refrigeration equipment.
Disclosure of Invention
The invention aims to at least solve the problem of air intake loss caused by deformation of the air guide ring. The purpose is realized by the following technical scheme:
the invention provides an air intake device in a first aspect, comprising:
the impeller comprises a mounting disc and a plurality of blades, and the plurality of blades are connected to the mounting disc;
the air guide mechanism comprises a bottom plate, an air guide ring and a plurality of support columns, an air inlet is formed in the air guide ring, the air guide ring is connected with the bottom plate through the plurality of support columns, an accommodating space is formed between the air guide ring and the bottom plate, air outlets communicated with the accommodating space are formed in the circumferential direction of the air guide mechanism, the impeller is located in the accommodating space, and an air flow gap is formed between the air guide ring and the impeller.
According to the air inlet device provided by the embodiment of the invention, the impeller is arranged in the accommodating space formed between the air guide ring and the bottom plate, and the air guide ring in the air guide mechanism is connected with the bottom plate through the plurality of support columns, so that the gap width between the air guide ring and the impeller is stable, the connection reliability between the air guide ring and the bottom plate is ensured, and the possibility of deformation of the air guide ring is reduced or avoided; the width of the gap between the air guide ring and the impeller is further prevented from being increased, the problem of air inlet loss caused by deformation of the air guide ring in the prior art is solved, and meanwhile scraping and rubbing between the impeller and the air guide ring caused by deformation of the air guide ring are also avoided.
In addition, the air intake device according to the embodiment of the invention can also have the following technical characteristics:
in some embodiments of the present invention, the top surface of the blade includes a first side top surface and a second side top surface which are smoothly and transitionally connected, the first side top surface is close to the axis of the mounting disc, the first side top surface is configured as a streamline arc surface extending obliquely upwards, and the second side top surface is configured as a concave arc surface extending obliquely downwards.
In some embodiments of the invention, the height of one end of the blade near the axis of the mounting disc is less than the height of the other end of the blade.
In some embodiments of the present invention, a protruding portion protruding toward the impeller is disposed on an inner side surface of the wind guiding ring, a gap is disposed between the protruding portion and the concave arc surface, and an outer contour of the protruding portion is matched with the concave arc surface.
In some embodiments of the present invention, an area of an opening of the air guiding ring facing the bottom plate is larger than an area of the air inlet.
In some embodiments of the present invention, the outer side surface of the wind guiding ring is configured as an arc surface.
In some embodiments of the present invention, an extension plate is circumferentially disposed on an edge of the air guide ring facing the opening of the bottom plate, and the support columns are respectively connected to the extension plate and the bottom plate.
In some embodiments of the present invention, the plurality of supporting columns are uniformly arranged along the circumferential direction of the wind guiding ring.
In some embodiments of the invention, the number of the support columns is four.
In a second aspect, the invention provides a refrigeration device, which comprises the air inlet device according to any one of the above embodiments.
The refrigeration equipment provided by the embodiment of the invention has the same advantages as the air inlet device in any embodiment, and the details are not repeated.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:
FIG. 1 is a schematic structural diagram of an air intake device according to an embodiment of the present invention;
FIG. 2 is a schematic side view of the intake assembly shown in FIG. 1;
FIG. 3 is a front view of the intake assembly shown in FIG. 1;
FIG. 4 is a partial cross-sectional view of the intake assembly of FIG. 3 taken in the direction of A-A;
FIG. 5 is a schematic structural view of an air guiding mechanism in the air intake device shown in FIG. 1;
FIG. 6 is a schematic view of the impeller of the air intake device shown in FIG. 1;
FIG. 7 is a front view of the impeller shown in FIG. 6;
fig. 8 is a top view of the impeller shown in fig. 6.
The reference symbols in the drawings denote the following:
100. an air intake device;
10. an impeller;
11. mounting a disc;
12. a blade; 121. a first side top surface; 122. a second side top surface;
20. an air guide mechanism;
21. a base plate;
22. a wind guide ring; 221. an air inlet; 222. a projection; 223. an extension plate;
23. and (4) a support column.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 to 8, an embodiment of the first aspect of the present invention provides an air intake device 100, where the air intake device 100 includes an impeller 10 and an air guiding mechanism 20, where the impeller 10 includes a mounting plate 11 and a plurality of blades 12, and the plurality of blades 12 are connected to the mounting plate 11; the air guide mechanism 20 comprises a bottom plate 21, an air guide ring 22 and a plurality of support columns 23, an air inlet 221 is formed in the air guide ring 22, the air guide ring 22 is connected with the bottom plate 21 through the plurality of support columns 23, an accommodating space is formed between the air guide ring 22 and the bottom plate 21, an air outlet communicated with the accommodating space is formed in the circumferential direction of the air guide mechanism 20, the impeller 10 is located in the accommodating space, and an air flow gap is formed between the air guide ring 22 and the impeller 10.
The air intake device 100 provided by the embodiment of the invention can be arranged in a centrifugal fan, in the embodiment, the impeller 10 is arranged between the air guide ring 22 and the bottom plate 21, and the air guide ring 22 and the bottom plate 21 are connected together by the support column 23, so that the reliability of the air guide mechanism 20 is improved, the possibility of deformation of the air guide ring 22 is reduced, and the air volume loss is reduced or avoided; an air inlet 221 is formed in the air guide ring 22, an air outlet is formed between the air guide ring 22 and the bottom plate 21, and an air flow gap for air circulation is formed between the inner side surface of the air guide ring 22 and the top surface of the blade 12, so that air flows out along the horizontal direction after entering along the axial direction of the air guide ring 22, scraping between the impeller 10 and the air guide ring 22 is avoided, and air inlet efficiency is improved.
Specifically, in the air intake device 100 according to the present embodiment, the air guiding mechanism 20 plays a role of guiding air, as shown in fig. 1, fig. 2, fig. 3, and fig. 5, the air guiding mechanism 20 includes an air guiding ring 22, the air guiding ring 22 is used for guiding the air flow to the impeller 10 from the air inlet, and the air flow is sent to each compartment of the device by the centrifugal force generated by the impeller 10; in this embodiment, the cross-sectional shape of the wind-guiding ring 22 is circular, and the wind-guiding ring 22 may be specifically set to be cylindrical or conical.
Openings are formed in both the end of the air guide ring 22 facing the bottom plate 21 and the end of the air guide ring 22 facing away from the bottom plate 21, and it can be understood that the opening in the end of the air guide ring 22 facing away from the bottom plate 21 is the air inlet 221. In some embodiments of the present invention, the area of the air inlet 221 is smaller than the area of the opening of the side of the air guiding ring 22 facing the bottom plate 21, so that the air flow is rapidly sent out by the centrifugal force of the impeller 10.
In some embodiments of the present invention, the outer side surface of the wind guiding ring 22 is an arc surface, specifically, the outer side surface of the wind guiding ring 22 may be an arc surface as a whole, or may be two arc surfaces connected to each other; the cambered surface is convenient for airflow to flow, so that the outer side surface of the air guide ring 22 is set to be a cambered surface, so that the airflow can flow into the air inlet 221 along the outer side of the air guide ring 22, and the air inlet efficiency of the air inlet device 100 is improved.
Specifically, as shown in fig. 2 and 3, the wind-guiding ring 22 is configured as an inverted disk, and further, the wind-guiding ring 22 includes two portions, and taking the orientation shown in fig. 3 as an example, the wind-guiding ring 22 includes an upper half portion and a lower half portion, it can be understood that the upper half portion and the lower half portion are integrally formed, and for convenience of understanding, the present embodiment will be separately described.
The outer side surface of the lower half part of the air guide ring 22 is an arc surface and is used for assisting air flow and improving the speed of the air flow flowing to the air inlet 221, so that the air inlet efficiency is improved; the outer side surface of the upper half part of the air guide ring 22 can be a straight inclined surface or an arc surface, and when the outer side surface is the arc surface, the speed of airflow flowing to the air inlet 221 can be further increased; further, the upper half portion and the lower half portion of the air guiding ring 22 are in transition connection, and a fillet may be specifically arranged, so that the air flow is convenient to flow along the outer side surface of the air guiding ring 22.
In addition to the above embodiments, in the air intake device 100 provided in this embodiment, the air guiding mechanism 20 further includes a bottom plate 21 connected to the air guiding ring 22, and a plurality of supporting columns 23 for connecting the air guiding ring 22 and the bottom plate 21. It should be noted that, because the wind-guiding ring 22 in the related art is usually installed in the device separately, and the wind-guiding ring 22 is close to one end of the inlet wind of the impeller 10, in the long-time use process, the wind-guiding ring 22 is blown by the airflow and is easily deformed, the gap between the deformed wind-guiding ring 22 and the impeller 10 is also changed, and if the gap is enlarged, the loss of the wind volume is caused, which results in the reduction of the inlet wind efficiency; if the gap is reduced, scratch is easily generated between the wind guide ring 22 and the impeller 10, and the wind inlet device 100 is damaged.
Accordingly, the air intake device 100 provided in this embodiment is provided with the bottom plate 21 connected to the air guide ring 22, and an accommodating space for accommodating the impeller 10 is formed between the air guide ring 22 and the bottom plate 21, as shown in fig. 2 to 4, the air guide ring 22 is connected to the bottom plate 21 through the plurality of support columns 23, one ends of the support columns 23 are fixedly connected to the bottom plate 21, the other ends of the support columns 23 are fixedly connected to the air guide ring 22, the support columns 23 are arranged to ensure that a fixed gap width exists between the air guide ring 22 and the bottom plate 21, and the plurality of support columns 23 improve the stability of connection between the air guide ring 22 and the bottom plate 21, thereby reducing or avoiding the possibility of deformation of the air guide ring 22.
Specifically, as shown in fig. 1 and 5, the bottom plate 21 may be configured as a rectangular plate, and accordingly, in some embodiments of the present invention, the wind deflector 22 further includes an extension plate 223, the extension plate 223 is circumferentially disposed on an edge of the wind deflector 22 facing the opening of the bottom plate 21, an outer contour of the extension plate 223 is also configured as a rectangle, and on this basis, as shown in fig. 2, two ends of the supporting column 23 are respectively connected to the extension plate 223 and the bottom plate 21. It should be noted that, in the present embodiment, the supporting column 23 may be integrally formed on the bottom plate 21 or the extension plate 223, for example, the supporting column 23 is integrally formed on the bottom plate 21, and an end of the supporting column 23 facing away from the bottom plate 21 may be connected to the extension plate 223 by a screw or a bolt.
In some embodiments of the present invention, the plurality of support columns 23 are uniformly arranged along the circumferential direction of the air guiding ring 22, on the basis of the above embodiments, the cross-sectional shape of the air guiding ring 22 is set to be circular, the plurality of support columns 23 are uniformly arranged around the axis of the air guiding ring 22, for example, the number of the support columns 23 may be set to be four, six, or eight, in some embodiments of the present invention, the number of the support columns 23 is set to be four, the interval angle between every two adjacent support columns 23 is 90 °, and the reliability of connection between the air guiding ring 22 and the bottom plate 21 is further improved by uniformly arranging the support columns 23.
In addition to the above embodiments, in the air intake device 100 proposed in the present embodiment, the impeller 10 is disposed in the air guiding mechanism 20, specifically, in the accommodating space between the air guiding ring 22 and the bottom plate 21; the impeller 10 includes a mounting disk 11 and a plurality of blades 12, as shown in fig. 4, 6 to 8, the mounting disk 11 may be circular in shape, the plurality of blades 12 may be arranged in a cyclone shape around an axis of the mounting disk 11, and it is understood that the plurality of blades 12 are arranged uniformly around the axis of the mounting disk 11.
Exemplarily, the blades 12 are all configured as arc-shaped blades 12, and the bottom of each blade 12 is connected to the upper surface of the mounting disk 11, specifically configured as a fixed connection, such as welding; the center of the mounting plate 11 is provided with an impeller 10 shaft, one end of each blade 12 is close to the impeller 10 shaft, and the top of each blade 12 extends obliquely outwards in the direction far away from the impeller 10 shaft.
Further, taking the end of the blade 12 close to the shaft of the impeller 10 as the head end and the end of the blade 12 far from the shaft of the impeller 10 as the tail end, in some embodiments of the present invention, the height of the end of the blade 12 close to the axis of the mounting plate 11 is smaller than the height of the other end of the blade 12, that is, the blade 12 is formed with a smaller head end, that is, a windward end, which can increase the air intake of the air intake device 100 because the air flow enters the impeller 10 along the axial direction. On this basis, the top surface of the blade 12 may be provided in an arc shape extending obliquely upward.
In some embodiments of the present invention, as shown in fig. 6 and 7, the top surface of the blade 12 includes two portions connected in a smooth transition, wherein a portion near the axis of the mounting disk 11, i.e., a portion located at the inner side, is the first side top surface 121; the portion away from the axis of the mounting plate 11, i.e. the portion located at the outer side, is the second side top surface 122, and the first side top surface 121 and the second side top surface 122 are connected in a smooth transition manner.
The first side top surface 121 is a streamline arc surface extending upward in an inclined manner, and the second side top surface 122 is a concave arc surface extending downward in an inclined manner. Specifically, first side top surface 121 sets up to the arcwall face, and extends along the direction tilt up from inside to outside, and in this embodiment, when the air current got into impeller 10 from the air inlet, the air current contacted with first side top surface 121 earlier, and this embodiment sets up first side top surface 121 into the streamlined cambered surface, and the air current of being convenient for flows to impeller 10's air supply efficiency has been improved.
The second side top surface 122 is a concave arc surface, and extends in a downward inclination manner along the direction from inside to outside, in this embodiment, after the airflow passes through the first side top surfaces 121 of the blades 12, the airflow is sent to the air outlet by the centrifugal force of the impeller 10, and the distance between the impeller 10 and the inner side of the air guide ring 22 is increased by the downward inclined concave arc surface, so that the air outlet amount is increased, and the air supply efficiency of the impeller 10 is further improved.
On the basis of the above embodiment, further, the inner side surface of the wind guiding ring 22 is adapted to the shape of the top of all the blades 12, and according to the above embodiment, the top surface of the blade 12 includes a concave arc surface disposed close to the outer side, according to this embodiment, the inner side surface of the wind guiding ring 22 is provided with a protruding portion 222 protruding toward the impeller 10, specifically, as shown in fig. 4, a gap is disposed between the protruding portion 222 and the concave arc surface, and the outer contour of the protruding portion 222 is matched with the concave arc surface, that is, the radian of the outer contour of the protruding portion 222 is substantially or completely matched with the radian of the concave arc surface of the blade 12, on this basis, a gap is disposed between the protruding portion 222 and the concave arc surface, and the gap is used for air flow circulation.
In this embodiment, the arc of the outer contour of the protruding portion 222 is consistent with the arc of the concave arc surface of the blade 12, so that an equal-speed-reduction flow channel can be formed between the inner side of the air guide ring 22 and the impeller 10, that is, since the width of the gap between the protruding portion 222 and the concave arc surface is not changed in the direction along which the airflow flows, when the airflow flows through the gap, the flow velocity and the flow rate of the airflow in each direction along the circumferential direction of the impeller 10 become more uniform, thereby improving the air supply efficiency of the impeller 10.
In summary, the air intake device 100 provided in the embodiment of the present invention includes an air guiding mechanism 20 and an impeller 10, the impeller 10 is installed in an accommodating space formed between an air guiding ring 22 and a bottom plate 21, and the air guiding ring 22 and the bottom plate 21 in the air guiding mechanism 20 are connected together through a plurality of supporting pillars 23, so that a gap width between the air guiding ring 22 and the impeller 10 is stable, reliability of connection between the air guiding ring 22 and the bottom plate 21 is ensured, and a possibility of deformation of the air guiding ring 22 is reduced or avoided; further, the width increase of the gap between the wind guide ring 22 and the impeller 10 is avoided, the problem of air intake loss caused by the deformation of the wind guide ring 22 in the prior art is solved, and meanwhile, the scraping between the impeller 10 and the wind guide ring 22 caused by the reduction of the gap after the deformation of the wind guide ring 22 is also avoided.
The embodiment of the second aspect of the invention provides a refrigeration device, which comprises the air inlet device 100 provided by any one of the above embodiments, wherein the air inlet device 100 is installed in the refrigeration device and is used for providing gas required by refrigeration for each compartment of the refrigeration device. In particular, in some embodiments of the present invention, the refrigeration device may be a refrigerator, freezer, or the like.
The refrigeration equipment of the embodiment of the invention has the same advantages as the air inlet device 100 in any one of the above embodiments, and the description is omitted.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An air intake device, comprising:
the impeller comprises a mounting disc and a plurality of blades, and the plurality of blades are connected to the mounting disc;
the air guide mechanism comprises a bottom plate, an air guide ring and a plurality of support columns, an air inlet is formed in the air guide ring, the air guide ring is connected with the bottom plate through the plurality of support columns, an accommodating space is formed between the air guide ring and the bottom plate, air outlets communicated with the accommodating space are formed in the circumferential direction of the air guide mechanism, the impeller is located in the accommodating space, and an air flow gap is formed between the air guide ring and the impeller.
2. The air intake device of claim 1, wherein the top surfaces of the blades comprise a first side top surface and a second side top surface which are connected in a smooth transition mode, the first side top surface is close to the axis of the mounting disc, the first side top surface is provided with a streamline arc surface extending upwards in an inclined mode, and the second side top surface is provided with a concave arc surface extending downwards in an inclined mode.
3. An air inlet arrangement according to claim 1 or 2, characterized in that the height of one end of the vane close to the axis of the mounting disc is smaller than the height of the other end of the vane.
4. The air intake device of claim 2, wherein the inner side surface of the air guide ring is provided with a protruding portion protruding towards the impeller, a gap is arranged between the protruding portion and the concave arc surface, and the outer contour of the protruding portion is matched with the concave arc surface.
5. The air intake device of claim 1, wherein the area of the opening of the air guide ring facing the bottom plate is larger than the area of the air inlet.
6. The air intake device of claim 5, wherein the outer side surface of the wind guide ring is provided with an arc surface.
7. The air intake device of claim 5, wherein the edge of the air guide ring facing the opening of the bottom plate is circumferentially provided with an extension plate, and the support columns are respectively connected with the extension plate and the bottom plate.
8. The air intake device of claim 1 or 7, wherein the support columns are uniformly arranged along the circumferential direction of the air guide ring.
9. The intake assembly of claim 8, wherein the number of support posts is four.
10. Refrigeration apparatus, comprising an air intake device as claimed in any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010905558.XA CN114109912A (en) | 2020-09-01 | 2020-09-01 | Air inlet device and refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010905558.XA CN114109912A (en) | 2020-09-01 | 2020-09-01 | Air inlet device and refrigeration equipment |
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| CN114109912A true CN114109912A (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010905558.XA Pending CN114109912A (en) | 2020-09-01 | 2020-09-01 | Air inlet device and refrigeration equipment |
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