CN111765123A - Range hood's fan and range hood - Google Patents
Range hood's fan and range hood Download PDFInfo
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- CN111765123A CN111765123A CN201910256103.7A CN201910256103A CN111765123A CN 111765123 A CN111765123 A CN 111765123A CN 201910256103 A CN201910256103 A CN 201910256103A CN 111765123 A CN111765123 A CN 111765123A
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- air inlet
- range hood
- impeller
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- 230000000903 blocking effect Effects 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 13
- 230000003068 static effect Effects 0.000 claims description 11
- 230000002596 correlated effect Effects 0.000 description 3
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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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
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
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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
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
- F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
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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
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
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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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
Abstract
The embodiment of the invention describes a fan of a range hood and the range hood. The fan (1) of the range hood comprises an air inlet (100) and an air outlet (200), and the area of the air inlet (100) is adjustable. By adjusting the area of the air inlet, the efficiency of the fan of the range hood under some working condition points can be improved, and the working condition interval of the fan suitable for running is widened.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of range hoods, in particular to a fan of a range hood and a range hood comprising the fan, wherein the fan of the range hood comprises an air inlet and an air outlet.
[ background of the invention ]
The volute provided by the invention patent CN102478269B comprises a front baffle, a coaming, a rear baffle and an air inlet ring, wherein the front baffle is provided with an air inlet, the rear baffle is used for supporting and fixing a motor and an impeller, the coaming is arranged between the front baffle and the rear baffle, and the air inlet ring is clamped at the air inlet of the front baffle.
[ summary of the invention ]
One object of the present invention is to provide an improved range hood fan and a range hood including the same.
The embodiment of the invention relates to a fan of a range hood. A fan of a range hood comprises an air inlet and an air outlet, wherein the area of the air inlet is adjustable.
Because the kitchen environments of different users are different, the actual operation working condition of the range hood deviates greatly from the design working condition point of the range hood after the range hood is installed in the kitchen of the user under many conditions, so that the efficiency of the range hood is reduced, and the energy consumption is increased.
According to the technical scheme, the efficiency of the fan of the range hood at some working condition points can be improved by adjusting the area of the air inlet, and the working condition interval of the fan suitable for running is widened.
In some embodiments, the fan of the range hood can operate efficiently in all operating ranges.
Because above-mentioned scheme can promote range hood's fan efficiency under some operating mode points, correspondingly, the work of fan loss on pneumatic noise just reduces naturally, and the noise when the fan moves will reduce.
It should be noted that, the above solution does not mean that the area of the air inlet needs to be adjusted when each installed fan is in operation, which depends on the actual working condition of the fan. For example, when the fan is in an environment with a large wind resistance, the fan does work for a large part to resist the wind resistance, the air volume of the fan is small, the oil smoke absorption effect is poor, and the area of the air inlet needs to be adjusted under the condition.
In one or more embodiments, the intake vent has a closed state and an open state, and an area of the intake vent is adjustable when the intake vent is in the open state. It should be noted that the term "closed state" means that the air inlet is completely closed, and at this time, the air flow cannot pass through the air inlet. By "open condition" is meant that the intake vent is at least partially open, in which case airflow may pass through the intake vent.
In one or more embodiments, the diameter of the intake vent is adjustable. According to the characteristics of the operation of the fan under different working conditions, the diameter of the air inlet is adjusted, so that the air inlet has the diameter which is most favorable for the operation of the fan under a certain working condition.
In one or more embodiments, the area of the air inlet is steplessly adjustable.
In one or more embodiments, the air inlet is arranged such that the area of the air inlet is positively correlated with the air volume of the fan.
Experimental data show that when the fan operates at a high flow rate, the efficiency of the fan with the large-area air inlet is higher than that of the fan with the small-area air inlet (other parameters are the same). As the air volume is reduced, the efficiency of the two is gradually close to equal. Along with the continuous reduction of the air quantity, the efficiency of the fan with the small-area air inlet is higher than that of the fan with the large-area air inlet. Therefore, according to the scheme of the embodiment, the air inlet is arranged such that the area of the air inlet is positively correlated with the air volume of the fan, and the efficiency of the fan under the condition of small air volume is improved. The efficiency of fan operation has been optimized.
In one or more embodiments, the area of the air inlet is related to the air volume or static pressure of the fan, and the area of the air inlet is set to be automatically adjusted according to the air volume or static pressure of the fan. The relation between the area of the air inlet and the air quantity or static pressure of the fan is prestored in the range hood. The air volume or static pressure of the fan can be directly or indirectly acquired through the corresponding detection module, and the area of the air inlet is set to be automatically adjusted, so that the fan can run at high efficiency under various working conditions.
In one or more embodiments, the fan of the range hood includes an adjusting structure for adjusting the area of the air inlet, and the adjusting structure includes a plurality of movable blocking pieces. The part for air inlet is shielded or exposed through the movement of the blocking piece, so that the area of the air inlet is adjustable. In one embodiment, the adjustment structure is disposed at the air inlet.
In one or more embodiments, a plurality of said flaps are arranged according to the principle of iris diaphragm, or a plurality of said flaps are arranged according to the principle of blind. The arrangement is not complicated in structure and is convenient to adjust.
In one or more embodiments, the adjusting structure includes an annular adjusting disc, the adjusting disc is rotatably disposed on the edge of the air inlet, and a plurality of studs are disposed on the adjusting disc; each baffle is provided with a sliding groove, one protruding column is positioned in one sliding groove, and the protruding columns correspond to the sliding grooves one by one; the adjusting structure adjusts the area of the air inlet through the rotation of the adjusting disc.
In one or more embodiments, the adjusting structure includes two semicircular blocking pieces, and the two blocking pieces are arranged in a relatively sliding manner, or the two blocking pieces are arranged in a relatively rotating manner.
The area of the air inlet, the impeller and the airflow motion rule are researched, the area of the air inlet and the inner diameter of the impeller are kept in the following relation, and compared with a fan (the air inlet is assumed to be fixed to be equal to the inner diameter of the impeller) with the size of the air inlet incapable of being adjusted, the fan can obtain higher efficiency in each flow interval, and the whole range hood has lower aerodynamic noise performance when in work. Especially in the low flow interval, efficiency is obviously higher than the fan that the air intake size can't be adjusted.
In one or more embodiments, the fan of the range hood includes an impeller, the inner diameter of the impeller is defined as D, and the maximum air volume of the fan is defined as Q; when the air volume of the fan is in the range of [0.7Q, Q ], the diameter of the air inlet is adjusted to [0.92D, D ]; when the air volume of the fan is in the range of [0.4Q, 0.7Q), the diameter of the air inlet is adjusted to [0.85D, 0.92D ]; and when the air volume of the fan is within the range of (0-0.4Q), the diameter of the air inlet is adjusted to be 0.7D, 0.85D. Wherein [0.7Q, Q ] is a general mathematical expression range including a left end point value and a right end point value. 0.4Q, 0.7Q) is the value inclusive of the left end point and inclusive of the right end point. The range of (0 to 0.4Q) is a value excluding the left end point and a value excluding the right end point.
In one or more embodiments, the fan of the range hood includes a first impeller and a second impeller which are coaxially arranged, the first impeller is located at the periphery of the second impeller, and the inner diameter of the first impeller is defined as D1The inner diameter of the second impeller is defined as D2The maximum air volume of the fan is defined as Q, and when the air volume of the fan is [0.7Q, Q]Within the range, the diameter of the air inlet is adjusted to be [0.8D ]1，D1]。
In one or more embodiments, the fan of the range hood includes a first impeller and a second impeller which are coaxially arranged, the first impeller is located at the periphery of the second impeller, and the inner diameter of the first impeller is defined as D1The inner diameter of the second impeller is defined as D2The maximum air volume of the fan is defined as Q, and when the air volume of the fan is (0, 0.4Q)]Within the range, the diameter of the air inlet is adjusted to be [0.9D ]2，D2]。
Another aspect of the embodiments of the present invention relates to a range hood, which includes a fan of the range hood according to any one of the above embodiments.
In one or more embodiments, the range hood includes a detection module and a control module, the detection module is configured to detect an air volume or a static pressure of the fan, and the control module is configured to control an area of the air inlet according to a detection result of the detection module.
It should be pointed out that the features of the dependent claims can be combined with each other and with the features of the independent claims in any way without departing from the inventive concept.
[ description of the drawings ]
Fig. 1 is a perspective view of a volute of a range hood according to an embodiment of the present invention;
fig. 2 is a front view of a volute of a range hood according to an embodiment of the present invention;
FIG. 3 is a schematic view of the volute of FIG. 2 after the air inlet has been scaled down;
FIG. 4 is a schematic view of a volute of another embodiment of the invention;
FIG. 5 is a schematic view of a volute of a further embodiment of the invention;
fig. 6 is an exploded view of a fan of a range hood according to an embodiment of the present invention;
FIG. 7 is a partial schematic view of a wind turbine according to another embodiment of the present invention;
FIG. 8 is a partial schematic view of the blower of the embodiment shown in FIG. 7 at another viewing angle;
FIG. 9 is a partial front view of the blower of the embodiment shown in FIG. 7;
fig. 10 is a partial front view of the blower of the embodiment shown in fig. 7 after the air inlet is reduced.
Reference numerals:
1-a fan; 2-a volute; 3-an impeller; 3 a-a first impeller; 3 b-a second impeller; 10-a modulating structure; 11, 21, 31-stop sheet; 12-a regulating disk; 13-rotating shaft. 100-an air inlet; 110-a chute; 200-air outlet.
[ detailed description ] embodiments
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
First, please refer to fig. 1 to 3, wherein fig. 1 is a perspective view of a volute of a range hood according to an embodiment of the present invention; fig. 2 is a front view of a volute of a range hood according to an embodiment of the present invention; fig. 3 is a schematic view of the volute of fig. 2 after the air inlet is adjusted to be small.
The present embodiment relates to a volute of a range hood. The volute 2 comprises an air inlet 100 and an air outlet 200, wherein the area of the air inlet 100 is adjustable.
The intake vent 100 has a closed state and an open state, and when the intake vent 100 is in the open state, the area of the intake vent 100 is adjustable.
Specifically, the volute 2 includes an adjusting structure 10 for adjusting the area of the air inlet 100, and the adjusting structure 10 includes a plurality of movable flaps 11. The adjusting structure 10 is disposed at the intake vent 100.
In the present embodiment, the blocking plates 11 are substantially arc-shaped, and the blocking plates 11 are arranged according to the principle of iris diaphragm, specifically as follows.
Each flap 11 is rotatably arranged on a respective one of the spindles 13.
The adjusting structure 10 includes an annular adjusting disk 12, and the adjusting disk 12 is rotatably disposed on the edge of the air inlet 100. The adjustment dial 12 is provided with a plurality of studs (not shown) which may be fixed to the adjustment dial or may be formed integrally with the adjustment dial. The studs extend in a direction perpendicular to the adjustment disc 12. Each baffle 11 is provided with a sliding groove 110 (the sliding grooves in fig. 1 to 3 are all covered by the adjusting plate, and only a part of one sliding groove 110 is shown in fig. 8). The chute 110 is an opening formed in the baffle plate 11 in the present embodiment, and the opening is narrow and extends in a curved manner.
After the adjusting structure 10 is assembled to the volute casing 2, one stud is located in one sliding groove 110, and the studs correspond to the sliding grooves 110 one by one. The adjusting structure 10 adjusts the area of the intake vent 100 by rotating the adjusting disk 12.
Referring to fig. 3 and comparing fig. 2, the area of the intake vent of fig. 3 is significantly smaller than that of the intake vent of fig. 2. Although only the areas of the intake vent shown in FIGS. 2 and 3 are shown, the area of the intake vent 100 may vary even more. The area of the air inlet of the embodiment can be adjusted to be smaller.
Because the adjusting structure of this embodiment employs six blocking pieces 11, and the intermediate structure enclosed by each blocking piece 11 is approximately a circle, the adjusting structure 10 of this embodiment can adjust the diameter of the air inlet 100. When the adjusting structure adopts more baffle plates, the middle structure enclosed by each baffle plate 11 is closer to a circle.
Of course, by means of a corresponding arrangement of the adjusting mechanism 10, a stepless adjustment can be achieved, i.e. the area of the air inlet opening 100 can be adjusted steplessly, which is possible.
Referring to fig. 4, fig. 4 is a schematic view of a volute according to another embodiment of the present invention. Compared to the embodiment shown in fig. 1 to 3, the present embodiment is different in that a plurality of flaps 21 are provided according to the shutter principle. The area of the air inlet 100 can be adjusted by adjusting the rotation angle of each baffle 21.
Referring to fig. 5 again, fig. 5 is a schematic view of a volute according to another embodiment of the present invention. Compared with the embodiment shown in fig. 1 to 3, the present embodiment is different in that the adjusting structure includes two semicircular blocking pieces 31, and the two blocking pieces 31 are rotatably arranged relatively. By rotating the baffle 31, the area of the air inlet 100 can be changed.
Of course, in another embodiment, two blocking pieces 31 are slidably arranged relative to each other, which is also possible. The area of the air inlet is changed by changing the relative distance between the two baffle plates.
Referring to fig. 6, fig. 6 is an exploded schematic view of a fan of a range hood according to an embodiment of the present invention. The fan 1 includes a volute 2 and an impeller 3 accommodated in the volute 2. The scroll casing 2 employs the scroll casing of the embodiment shown in fig. 1 to 3. Therefore, the blower 1 has an air inlet 100 and an air outlet 200, and the air inlet 100 and the air outlet 200 are disposed on the scroll casing 2.
In the embodiment shown in fig. 6, the inner diameter of the impeller 3 is defined as D, and the maximum air volume of the fan 1 is defined as Q. When the air volume of the fan 1 is in the range of [0.7Q, Q ], the diameter of the air inlet 100 is adjusted to [0.92D, D ]. When the air volume of the fan 1 is in the range of [0.4Q, 0.7Q), the diameter of the air inlet 100 is adjusted to [0.85D, 0.92D). When the air volume of the fan 1 is within the range of (0-0.4Q), the diameter of the air inlet 100 is adjusted to be 0.7D, 0.85D.
Thus, the fan 1 of the present embodiment can obtain high efficiency in operation and low noise performance.
In other embodiments of the present invention, the air inlet 100 is configured such that its area is positively correlated to the air volume of the fan 1.
In one embodiment, the maximum air volume of the fan is Q, and when the fan operates at an air volume of 0.8Q, the efficiency of the fan is maximized, which is η. If the area of the air inlet is not adjusted, when the air volume of the fan is operated to 0.4Q, the efficiency of the fan is reduced to 0.71 eta. The area of the air inlet is reduced when the air quantity is low, and the condition that the efficiency is obviously reduced along with the reduction of the air quantity can be obviously improved. Therefore, when the air volume of the fan runs to 0.4Q, the efficiency of the fan can reach 0.77 eta by reducing the area of the air inlet, and the efficiency of the fan is still maintained at 0.7 eta at 0.35Q. Therefore, experimental data prove that the efficiency of the fan in the low air volume interval can be improved, and meanwhile, the suitable operation interval of the fan is further increased.
In another embodiment of the present invention, the area of the intake vent 100 is related to the air volume or static pressure of the fan 1, and the intake vent 100 is configured such that its area is automatically adjusted according to the air volume or static pressure of the fan 1.
Referring to fig. 7 to 10 again, fig. 7 is a partial schematic view of a blower according to another embodiment of the present invention; FIG. 8 is a partial schematic view of the blower of the embodiment shown in FIG. 7 at another viewing angle; FIG. 9 is a partial front view of the blower of the embodiment shown in FIG. 7; fig. 10 is a partial front view of the blower of the embodiment shown in fig. 7 after the air inlet is reduced.
The fan of the range hood of the embodiment comprises a first impeller 3a and a second impeller 3b which are coaxially arranged, wherein the first impeller 3a is positioned at the periphery of the second impeller 3 b. Here, the inner diameter of the first impeller 3a is defined as D1The inner diameter of the second impeller 3b is defined as D2The maximum air quantity of the fan 1 is defined as Q, and when the air quantity of the fan 1 is [0.7Q, Q]Within the range, the diameter of the inlet 100 is adjusted to [0.8D ]1，D1]As shown in fig. 9. At this time, the adjusted diameter of the air inlet 100 is adjusted to [0.8D ]1，D1]And therefore the first impeller 3a in fig. 9 is hidden by the adjustment structure.
When the air quantity of the fan 1 is (0, 0.4Q)]When in range, the air inlet100 is adjusted to [0.9D ] diameter2，D2]As shown in fig. 10. At this time, both the first impeller 3a and the second impeller 3b in fig. 10 are hidden by the adjustment structure.
The present invention also relates to a range hood, which comprises the fan 1 of the range hood according to any one of the above embodiments.
In one embodiment of the present invention, the range hood includes a detection module and a control module, the detection module is configured to detect an air volume or a static pressure of the fan 1, and the control module is configured to control an area of the air inlet 100 according to a detection result of the detection module.
The various embodiments of the individual components described in connection with fig. 1 to 10 may be combined with each other in any given way to achieve the advantages of the invention.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.
Claims (15)
1. A fan (1) of a range hood comprises an air inlet (100) and an air outlet (200), and is characterized in that,
the area of the air inlet (100) is adjustable.
2. The fan (1) of the range hood according to claim 1, wherein the air inlet (100) has a closed state and an open state, and when the air inlet (100) is in the open state, the area of the air inlet (100) is adjustable.
3. The fan (1) of a range hood according to claim 1 or 2, wherein the diameter of the air inlet (100) is adjustable.
4. The fan (1) of a range hood according to claim 1 or 2, wherein the area of the air inlet (100) is steplessly adjustable.
5. The fan (1) of the range hood according to claim 1 or 2, wherein the air inlet (100) is arranged such that its area is in positive correlation with the air volume of the fan (1).
6. The fan (1) of the range hood according to claim 1 or 2, wherein the area of the air inlet (100) is related to the air volume or static pressure of the fan (1), and the air inlet (100) is configured to automatically adjust its area according to the air volume or static pressure of the fan (1).
7. The fan (1) of the range hood according to claim 1 or 2, comprising an adjusting structure (10) for adjusting the area of the air inlet (100), wherein the adjusting structure (10) comprises a plurality of movable blocking pieces (11, 21, 31).
8. The fan (1) of a range hood according to claim 7, characterized in that a plurality of said baffles (11) are arranged according to the principle of iris diaphragm, or a plurality of said baffles (21) are arranged according to the principle of shutter.
9. The fan (1) of the range hood according to claim 8, wherein the adjusting structure (10) comprises an annular adjusting disk (12), the adjusting disk (12) is rotatably disposed on an edge of the air inlet (100), and a plurality of studs are disposed on the adjusting disk (12); each baffle plate (11) is provided with a sliding groove (110), one protruding column is positioned in one sliding groove (110), and the protruding columns correspond to the sliding grooves (110) one by one; the adjusting structure (10) adjusts the area of the air inlet (100) through the rotation of the adjusting disc (12).
10. The fan (1) of the range hood according to claim 7, wherein the adjusting structure (10) comprises two semicircular blocking pieces (31), the two blocking pieces (31) are arranged in a relatively slidable manner, or the two blocking pieces (31) are arranged in a relatively rotatable manner.
11. The fan (1) of the range hood according to claim 1 or 2, comprising an impeller (3), wherein the inner diameter of the impeller (3) is defined as D, and the maximum air volume of the fan (1) is defined as Q;
when the air volume of the fan (1) is in the range of [0.7Q, Q ], the diameter of the air inlet (100) is adjusted to [0.92D, D ];
when the air volume of the fan (1) is in the range of [0.4Q, 0.7Q ], the diameter of the air inlet (100) is adjusted to [0.85D, 0.92D ];
when the air volume of the fan (1) is within the range of (0-0.4Q), the diameter of the air inlet (100) is adjusted to be [0.7D, 0.85D ].
12. The fan (1) of the range hood according to claim 1 or 2, comprising a first impeller (3a) and a second impeller (3b) which are coaxially arranged, wherein the first impeller (3a) is located at the periphery of the second impeller (3b), and the inner diameter of the first impeller (3a) is defined as D1The inner diameter of the second impeller (3b) is defined as D2The maximum air volume of the fan (1) is defined as Q, and when the air volume of the fan (1) is [0.7Q, Q]Within the range, the diameter of the air inlet (100) is adjusted to [0.8D ]1，D1]。
13. The fan (1) of the range hood according to claim 1 or 2, comprising a first impeller (3a) and a second impeller (3b) which are coaxially arranged, wherein the first impeller (3a) is located at the periphery of the second impeller (3b), and the inner diameter of the first impeller (3a) is defined as D1The inner diameter of the second impeller (3b) is defined as D2The maximum air volume of the fan (1) is defined as Q, and when the air volume of the fan (1) is (0, 0.4Q)]Within the range, the diameter of the air inlet (100) is adjusted to [0.9D ]2，D2]。
14. A range hood, characterized in that it comprises a fan (1) of a range hood according to any one of claims 1 to 13.
15. The range hood according to claim 14, comprising a detection module and a control module, wherein the detection module is configured to detect an air volume and/or a static pressure of the fan (1), and the control module is configured to control an area of the air inlet (100) according to a detection result of the detection module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910256103.7A CN111765123A (en) | 2019-04-01 | 2019-04-01 | Range hood's fan and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910256103.7A CN111765123A (en) | 2019-04-01 | 2019-04-01 | Range hood's fan and range hood |
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| Publication Number | Publication Date |
|---|---|
| CN111765123A true CN111765123A (en) | 2020-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910256103.7A Pending CN111765123A (en) | 2019-04-01 | 2019-04-01 | Range hood's fan and range hood |
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| CN (1) | CN111765123A (en) |
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