CN203867986U - Shell assembly used for centrifugal fan, centrifugal fan and refrigeration equipment - Google Patents
Shell assembly used for centrifugal fan, centrifugal fan and refrigeration equipment Download PDFInfo
- Publication number
- CN203867986U CN203867986U CN201420209517.7U CN201420209517U CN203867986U CN 203867986 U CN203867986 U CN 203867986U CN 201420209517 U CN201420209517 U CN 201420209517U CN 203867986 U CN203867986 U CN 203867986U
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- Prior art keywords
- air
- centrifugal
- wind wheel
- intake grill
- axial direction
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- Expired - Lifetime
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- 238000005057 refrigeration Methods 0.000 title abstract description 3
- 230000002093 peripheral effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model discloses a shell assembly used for a centrifugal fan, a centrifugal fan and refrigeration equipment. The shell assembly comprises a shell, a centrifugal wind wheel, an air guiding ring and an air stopping ring. The shell is provided with a cavity, an air outlet and an air inlet, and the air outlet and the air inlet are communicated with the cavity; the centrifugal wind wheel is rotationally arranged in the cavity, and the air inlet is located in one side in the axial direction of the centrifugal wind wheel; the air guiding ring is formed on the air inlet and extends into the cavity in the axial direction of the centrifugal wind wheel; the air stopping ring is located in the cavity, the periphery of the air guiding ring is sleeved with the air stopping ring in a spaced mode in the axial direction, and the height of the air stopping ring in the axial direction is larger than that of the air guiding ring in the axial direction. According to the shell assembly used for the centrifugal fan, the air stopping ring is arranged on the periphery of the air guiding ring in a covering mode so that airflow can be effectively prevented from leaking from the gap between the air inlet and the centrifugal wind wheel, airflow pressure loss is reduced, the efficiency of the centrifugal wind wheel is improved, and air supply noise is reduced.
Description
Technical field
The utility model relates to technical field of refrigeration equipment, particularly, and particularly a kind of frame set for centrifugal blower, centrifugal blower and chiller plant.
Background technique
Along with the raising of living standards of the people, air-conditioning draught fan noise and energy consumption are required day by day to improve.As widely used centrifugal blower in floor type air-conditioner, dehumidifier and mobile air conditioner, how effectively to reduce noise, improve air quantity and the pressure of blower fan, be industry scientific and technical personnel's effort target always.
For meeting the requirement of falling transportation and blower fan assembly error, the conventional centrifugal wind wheel of centrifugal blower and the axial clearance between the air-ducting ring of housing are generally larger, to guarantee that even centrifugal blower falls from eminence, wind wheel can not exist yet and mutually collides with air-ducting ring and split rotten risk, also guaranteed dynamic balancing variation after wind wheel is because of long operational time simultaneously, when axial runout becomes large, still can run well.So, this just makes the high pressure draught of centrifugal blower generation from axial clearance internal leakage, thereby produces the pressure loss, has reduced the efficiency of centrifugal blower, has improved eddy current noise.
Model utility content
The utility model is intended to solve at least to a certain extent one of technical problem in correlation technique.For this reason, an object of the present utility model is to propose the frame set for centrifugal blower that a kind of intake grill pressure loss is little, air-out efficiency is high, noise is low.
Another object of the present utility model is to propose a kind of centrifugal blower with above-mentioned frame set.
Another object of the present utility model is to propose a kind of chiller plant with above-mentioned centrifugal blower.
According to the utility model embodiment aspect, provide a kind of frame set for centrifugal blower, having comprised: housing, exhaust outlet and intake grill that described housing has chamber and is communicated with described chamber; Centrifugal wind wheel, described centrifugal wind wheel is rotatably located in described chamber, and described intake grill is positioned at an axial side of described centrifugal wind wheel; Air-ducting ring, described air-ducting ring is formed on described intake grill place and extends in described chamber along the axial direction of described centrifugal wind wheel; And wind loop, described wind loop is positioned at described chamber and is set in the periphery of described air-ducting ring in compartment of terrain in the radial direction, and described wind loop is greater than described air-ducting ring along the height on its axial direction along the height on its axial direction.
According to the utility model embodiment's the frame set for centrifugal blower, by the peripheral closure in air-ducting ring, establish wind loop, can effectively prevent that air-flow is from the clearance leakage between intake grill and centrifugal wind wheel, thereby reduced stream pressure loss, improve the efficiency of centrifugal wind wheel, reduced air-supply noise.
In addition, according to the frame set for centrifugal blower of the utility model above-described embodiment, can also there is following additional technical characteristics:
Particularly, the internal diameter size of described wind loop is greater than the internal diameter size of one end of close described centrifugal wind wheel in described air-ducting ring, and the absolute value of the difference of the internal diameter size of described wind loop and the radial dimension of described centrifugal wind wheel is less than 30mm.
According to an embodiment of the present utility model, described wind loop is h along the height on its axial direction
1, on described centrifugal wind wheel, end face and the distance between described intake grill of one end of close described intake grill are h
2, h
1and h
2relation meet: h
1-h
2< 25mm.
According to an embodiment of the present utility model, described wind loop is h along the height on its axial direction
1, on described centrifugal wind wheel, end face and the distance between described intake grill of one end of close described intake grill are h
2, h
1and h
2relation meet: h
1=h
2.
According to an embodiment of the present utility model, described wind loop is h along the height on its axial direction
1, on described centrifugal wind wheel, end face and the distance between described intake grill of one end of close described intake grill are h
2, h
1and h
2relation meet: h
2-h
1< 25mm.
Alternatively, described wind loop be a plurality of and radially compartment of terrain be set in described intake grill periphery.Thus, a plurality of wind loops can form labyrinth structure, can further reduce the amount of the leakage of air-flow.
Alternatively, described housing has one or more described intake grills.
According to another aspect of the present utility model, provide a kind of centrifugal blower, comprised frame set as above.
According to the utility model embodiment's centrifugal blower, by the peripheral closure in air-ducting ring, establish wind loop, can effectively prevent that air-flow is from the clearance leakage between intake grill and centrifugal wind wheel, thereby reduce stream pressure loss, improve the efficiency of centrifugal wind wheel, reduced air-supply noise.
According to another aspect of the present utility model, provide a kind of chiller plant, comprised centrifugal blower as above.
According to the utility model embodiment's chiller plant, by the peripheral closure in air-ducting ring, establish wind loop, can effectively prevent that air-flow is from the clearance leakage between intake grill and centrifugal wind wheel, thereby reduced stream pressure loss, improved the efficiency of centrifugal wind wheel, reduce air-supply noise, and then improved the usability of chiller plant.
Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Accompanying drawing explanation
Fig. 1 is according to the cross-sectional schematic of the embodiment's 1 of the present utility model frame set for centrifugal blower, wherein, and h
1-h
2< 25mm;
Fig. 2 is according to the cross-sectional schematic of the embodiment's 2 of the present utility model frame set for centrifugal blower, wherein, and h
1=h
2;
Fig. 3 is according to the cross-sectional schematic of the embodiment's 3 of the present utility model frame set for centrifugal blower, wherein, and h
2-h
1< 25mm;
Fig. 4 is according to the cross-sectional schematic of the embodiment's 4 of the present utility model frame set for centrifugal blower, and wherein, frame set has two wind loops;
Fig. 5 is according to the cross-sectional schematic of the embodiment's 5 of the present utility model frame set for centrifugal blower, and wherein, housing has two intake grills.
Reference character:
Frame set 100,
Housing 10, chamber 11, intake grill 12,
Centrifugal wind wheel 20, upper-end surface 21, frame 22, upper edge 23, lower edge 24,
Air-ducting ring 30, wind loop 40.
Embodiment
Describe embodiment of the present utility model below in detail, described embodiment's example is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment who is described with reference to the drawings, be exemplary, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, orientation or the position relationship of the indications such as term " " center ", " length ", " highly ", " on ", D score, " interior ", " outward ", " axially ", " radially ", " circumferentially " be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; rather than the device of indication or hint indication or element must have specific orientation, with specific orientation structure and operation, so can not be interpreted as restriction of the present utility model.
In the utility model, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or be integral; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
1-Fig. 5 describes in detail according to the utility model embodiment's the frame set 100 for centrifugal blower with reference to the accompanying drawings, and the direction of arrow in Fig. 1-Fig. 5 is the airintake direction of frame set 100.
As Figure 1-Figure 5, according to an aspect of the present utility model, provide a kind of frame set 100 for centrifugal blower, having comprised: housing 10, centrifugal wind wheel 20, air-ducting ring 30 and wind loop 40.Wherein, housing 10 has chamber 11, intake grill 12 and exhaust outlet (scheming not shown), and centrifugal wind wheel 20 is located in chamber 11, and air-ducting ring 30 and wind loop 40 are formed on intake grill 12 places.
Particularly, centrifugal wind wheel 20 is rotatably located in chamber 11.Exhaust outlet and intake grill 12 are all communicated with chamber 11, intake grill 12 is positioned at an axial side of centrifugal wind wheel 20, the one end of in axial direction going up that is centrifugal wind wheel 20 is relative with intake grill 12, so that air-flow enters in centrifugal wind wheel 20 along the axial direction of centrifugal wind wheel 20.As shown in Figure 1, intake grill 12 is relative with the upper-end surface 21 of centrifugal wind wheel 20.
Air-ducting ring 30 be formed on intake grill 12 places and along the axial direction of centrifugal wind wheel 20 towards the interior extension of chamber 11.For example, as shown in Figure 1, air-ducting ring 30 be formed in chamber 11 and along the axial direction of centrifugal wind wheel 20 downwards (above-below direction as shown in Figure 1) extend.Preferably, place, one end round-corner transition being connected with intake grill 12 in air-ducting ring 30, the other end of air-ducting ring 30 is relative with the upper-end surface 21 of centrifugal wind wheel 20.Be understandable that, by intake grill 12 places, air-ducting ring 30 being set, can, by entering into air-flow in intake grill 12 and guide to 21 places, upper-end surface of centrifugal wind wheel 20, have shortened the gap between intake grill 12 and centrifugal wind wheel 20.
Wind loop 40 is positioned at chamber 11 and is set in the periphery of air-ducting ring 30 in compartment of terrain in the radial direction.Wind loop 40 is greater than air-ducting ring 30 along the height on its axial direction along the height on its axial direction.For example, as shown in Figure 1, wind loop 40 is h along the height on its axial direction
1, air-ducting ring 30 is h along the height on its axial direction
3, so, h
1and h
3satisfied pass is: h
1> h
3.Thus, can further prevent that air-flow is from the clearance leakage between intake grill 12 and centrifugal wind wheel 20, thereby reduce stream pressure loss, improve the efficiency of centrifugal wind wheel 20, reduce air-supply noise.
It should be noted that, in correlation technique, because centrifugal wind wheel 20 air intake areal pressures are low, air-out areal pressure is high, the part high pressure draught producing after centrifugal wind wheel 20 actings flows out from the gap internal leakage between centrifugal wind wheel 20 and air-ducting ring 30, then flows into from the intake grill 12 of centrifugal wind wheel 20, thereby has reduced the efficiency of centrifugal blower, reduce air quantity, increased air-supply noise.
And according to the utility model embodiment's the frame set 100 for centrifugal blower, by establishing wind loop 40 in the peripheral closure of air-ducting ring 30, can effectively prevent that air-flow is from the clearance leakage between intake grill 12 and centrifugal wind wheel 20, thereby reduced stream pressure loss, the efficiency that has improved centrifugal wind wheel 20, has reduced air-supply noise.
Alternatively, the internal diameter size of wind loop 40 is greater than the internal diameter size of one end of close centrifugal wind wheel 20 in air-ducting ring 30, and the absolute value of the difference of the radial dimension of the internal diameter size of wind loop 40 and centrifugal wind wheel 20 is less than 30mm.As shown in Figure 1, the internal diameter of wind loop 40 is D
1, the internal diameter of one end of the close centrifugal wind wheel 20 in air-ducting ring 30 is D
3, the radial dimension of centrifugal wind wheel 20 is D
2, D so
1, D
2and D
3relation meet: D
1> D
3, and | D
1-D
2| < 30mm.
Especially, also it should be noted that, as shown in Figure 1-Figure 3, the periphery of the upper end of centrifugal wind wheel 20 is formed with the frame 22 extending along centrifugal wind wheel 20 circumferential direction along place, the upper edge 23 of frame 22 is concordant with the upper-end surface 21 of centrifugal wind wheel 20, and the lower edge 24 of frame 22 is positioned at the below (below as shown in Fig. 1-Fig. 3) of wind loop 40.Thus, wind loop 40 both can effectively reduce stream pressure loss, also can not stop the air-out effect of centrifugal wind wheel 20.
Below in conjunction with Fig. 1-Fig. 5, describe according to the several different embodiments' of the utility model the frame set 100 for centrifugal blower.
Embodiment 1
As shown in Figure 1, in embodiment of the present utility model, wind loop 40 is h along the height on its axial direction
1, on centrifugal wind wheel 20, end face and the distance between intake grill 12 of one end of close intake grill 12 are h
2, h
1and h
2relation meet: h
1-h
2< 25mm.Thus, can effectively prevent that air-flow is from the clearance leakage between intake grill 12 and centrifugal wind wheel 20, thereby reduce stream pressure loss, improve the efficiency of centrifugal wind wheel 20, reduce air-supply noise.
Embodiment 2
As shown in Figure 2, in embodiment of the present utility model, wind loop 40 is h along the height on its axial direction
1, on centrifugal wind wheel 20, end face and the distance between intake grill 12 of one end of close intake grill 12 are h
2, h
1and h
2relation meet: h
1=h
2.Thus, can effectively prevent that air-flow is from the clearance leakage between intake grill 12 and centrifugal wind wheel 20, thereby reduce stream pressure loss, improve the efficiency of centrifugal wind wheel 20, reduce air-supply noise.
Embodiment 3
As shown in Figure 3, in embodiment of the present utility model, wind loop 40 is h along the height on its axial direction
1, on centrifugal wind wheel 20, end face and the distance between intake grill 12 of one end of close intake grill 12 are h
2, h
1and h
2relation meet: h
2-h
1< 25mm.Thus, can effectively prevent that air-flow is from the clearance leakage between intake grill 12 and centrifugal wind wheel 20, thereby reduce stream pressure loss, improve the efficiency of centrifugal wind wheel 20, reduce air-supply noise.
Embodiment 4
In embodiment of the present utility model, wind loop 40 can for a plurality of and radially compartment of terrain be set in intake grill 12 peripheries.For example, as shown in Figure 4, wind loop 40 is two.A plurality of wind loops 40 from the inside to the outside that are set in air-ducting ring 30 peripheries are equivalent to labyrinth seal, thus, can further prevent flow leakage.It should be noted that, under the operating mode of high pressure, small flow, the windproof effect of a plurality of wind loops 40 is more obvious.
Alternatively, as shown in Figure 4, the height that a plurality of wind loops 40 are in axial direction gone up increases from the inside to the outside gradually.Be understandable that, the height of in axial direction going up of a plurality of wind loops 40 is not limited to this, as long as it can reduce the leakage of air-flow, improves the efficiency of centrifugal blower, and for example, the height that a plurality of wind loops 40 are in axial direction gone up can be identical.
According to the utility model embodiment's the frame set 100 for centrifugal blower, by establish a plurality of wind loops 40 in the peripheral closure of air-ducting ring 30, can effectively prevent that air-flow is from the clearance leakage between intake grill 12 and centrifugal wind wheel 20, thereby reduced stream pressure loss, the efficiency that has improved centrifugal wind wheel 20, has reduced air-supply noise.
Embodiment 5
In embodiment of the present utility model, housing 10 can have one or more intake grills 12.Particularly, as shown in Figure 5, housing 10 has two intake grills 12, in the top and bottom of the axis upper shell 10 of centrifugal wind wheel 20, be respectively equipped with an intake grill 12, air-ducting ring 30 be formed on each intake grill 12 place and along the axial direction of centrifugal wind wheel 20 towards the interior extension of chamber 11, wind loop 40 is positioned at chamber 11 and is set in the periphery of each air-ducting ring 30 in compartment of terrain in the radial direction.Also it should be noted that, the frame set 100 with two intake grills 12 goes for two air intake centrifugal blower fans.
According to the utility model embodiment's the frame set 100 for centrifugal blower, by establishing wind loop 40 in the peripheral closure of each air-ducting ring 30, can effectively prevent that air-flow is from the clearance leakage between intake grill 12 and centrifugal wind wheel 20, thereby reduced stream pressure loss, the efficiency that has improved centrifugal wind wheel 20, has reduced air-supply noise.
According to another aspect of the present utility model, provide a kind of centrifugal blower (scheming not shown), comprised frame set 100 described above.
According to the utility model embodiment's centrifugal blower, by establishing wind loop 40 in the peripheral closure of air-ducting ring 30, can prevent that air-flow is from the clearance leakage between intake grill 12 and centrifugal wind wheel 20, thereby reduce stream pressure loss, improve the efficiency of centrifugal blower, reduced air-supply noise.
According to another aspect of the present utility model, provide a kind of chiller plant (scheming not shown), comprised centrifugal blower described above.
According to the utility model embodiment's chiller plant, by establishing wind loop 40 in the peripheral closure of air-ducting ring 30, can prevent that air-flow is from clearance leakage between intake grill 12 and centrifugal wind wheel 20, thereby reduced stream pressure loss, improved the efficiency of centrifugal blower, reduce air-supply noise, and then improved the usability of chiller plant.
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, to the schematic statement of above-mentioned term not must for be identical embodiment or example.And, the specific features of description, structure, material or feature can one or more embodiments in office or example in suitable mode combination.In addition,, not conflicting in the situation that, those skilled in the art can carry out combination and combination by the feature of the different embodiments that describe in this specification or example and different embodiment or example.
Although illustrated and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment in scope of the present utility model, modification, replacement and modification.
Claims (10)
1. for a frame set for centrifugal blower, it is characterized in that, comprising:
Housing, exhaust outlet and intake grill that described housing has chamber and is communicated with described chamber;
Centrifugal wind wheel, described centrifugal wind wheel is rotatably located in described chamber, and described intake grill is positioned at an axial side of described centrifugal wind wheel;
Air-ducting ring, described air-ducting ring is formed on described intake grill place and extends in described chamber along the axial direction of described centrifugal wind wheel; And
Wind loop, described wind loop is positioned at described chamber and is set in the periphery of described air-ducting ring in compartment of terrain in the radial direction, and described wind loop is greater than described air-ducting ring along the height on its axial direction along the height on its axial direction.
2. the frame set for centrifugal blower according to claim 1, is characterized in that, the internal diameter size of described wind loop is greater than the internal diameter size of one end of close described centrifugal wind wheel in described air-ducting ring.
3. the frame set for centrifugal blower according to claim 1, is characterized in that, the absolute value of the difference of the internal diameter size of described wind loop and the radial dimension of described centrifugal wind wheel is less than 30mm.
4. the frame set for centrifugal blower according to claim 1, is characterized in that, described wind loop is h along the height on its axial direction
1, on described centrifugal wind wheel, end face and the distance between described intake grill of one end of close described intake grill are h
2, h
1and h
2relation meet: h
1-h
2< 25mm.
5. the frame set for centrifugal blower according to claim 1, is characterized in that, described wind loop is h along the height on its axial direction
1, on described centrifugal wind wheel, end face and the distance between described intake grill of one end of close described intake grill are h
2, h
1and h
2relation meet: h
1=h
2.
6. the frame set for centrifugal blower according to claim 1, is characterized in that, described wind loop is h along the height on its axial direction
1, on described centrifugal wind wheel, end face and the distance between described intake grill of one end of close described intake grill are h
2, h
1and h
2relation meet: h
2-h
1< 25mm.
7. the frame set for centrifugal blower according to claim 1, is characterized in that, described wind loop be a plurality of and radially compartment of terrain be set in described intake grill periphery.
8. according to the frame set for centrifugal blower described in any one in claim 1-7, it is characterized in that, described housing has one or more described intake grills.
9. a centrifugal blower, is characterized in that, comprises the frame set as described in any one in claim 1-8.
10. a chiller plant, is characterized in that, comprises centrifugal blower as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420209517.7U CN203867986U (en) | 2014-04-25 | 2014-04-25 | Shell assembly used for centrifugal fan, centrifugal fan and refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420209517.7U CN203867986U (en) | 2014-04-25 | 2014-04-25 | Shell assembly used for centrifugal fan, centrifugal fan and refrigeration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203867986U true CN203867986U (en) | 2014-10-08 |
Family
ID=51648945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420209517.7U Expired - Lifetime CN203867986U (en) | 2014-04-25 | 2014-04-25 | Shell assembly used for centrifugal fan, centrifugal fan and refrigeration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203867986U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016113963A (en) * | 2014-12-15 | 2016-06-23 | 日本電産株式会社 | Fan device |
| CN105864995A (en) * | 2016-06-01 | 2016-08-17 | 珠海格力电器股份有限公司 | Air outlet assembly and air conditioner with same |
| CN108050102A (en) * | 2018-01-29 | 2018-05-18 | 美的集团股份有限公司 | Impeller, fan assembly and electric appliance |
| CN110185634A (en) * | 2019-06-25 | 2019-08-30 | 宁波奥克斯电气股份有限公司 | A kind of centrifugal blower and air conditioner |
| CN110211560A (en) * | 2019-05-31 | 2019-09-06 | 广东美的制冷设备有限公司 | Resonance sound-absorbing structure and air-conditioning draught fan component |
| CN110219830A (en) * | 2019-06-25 | 2019-09-10 | 深圳市普瑞美泰技术有限公司 | Centrifugal air duct structure, centrifugal blower and air cleaning facility |
-
2014
- 2014-04-25 CN CN201420209517.7U patent/CN203867986U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016113963A (en) * | 2014-12-15 | 2016-06-23 | 日本電産株式会社 | Fan device |
| CN105864995A (en) * | 2016-06-01 | 2016-08-17 | 珠海格力电器股份有限公司 | Air outlet assembly and air conditioner with same |
| CN105864995B (en) * | 2016-06-01 | 2019-02-01 | 珠海格力电器股份有限公司 | Air outlet assembly and air conditioner with same |
| CN108050102A (en) * | 2018-01-29 | 2018-05-18 | 美的集团股份有限公司 | Impeller, fan assembly and electric appliance |
| CN110211560A (en) * | 2019-05-31 | 2019-09-06 | 广东美的制冷设备有限公司 | Resonance sound-absorbing structure and air-conditioning draught fan component |
| CN110211560B (en) * | 2019-05-31 | 2022-02-08 | 广东美的制冷设备有限公司 | Resonance sound absorption structure and air conditioner fan subassembly |
| CN110185634A (en) * | 2019-06-25 | 2019-08-30 | 宁波奥克斯电气股份有限公司 | A kind of centrifugal blower and air conditioner |
| CN110219830A (en) * | 2019-06-25 | 2019-09-10 | 深圳市普瑞美泰技术有限公司 | Centrifugal air duct structure, centrifugal blower and air cleaning facility |
| CN110219830B (en) * | 2019-06-25 | 2024-04-05 | 深圳市普瑞美泰技术有限公司 | Centrifugal air duct structure, centrifugal fan and air purification equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141008 |