CN210977981U - Range hood's spiral case, fan and range hood - Google Patents
Range hood's spiral case, fan and range hood Download PDFInfo
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- CN210977981U CN210977981U CN201920433183.4U CN201920433183U CN210977981U CN 210977981 U CN210977981 U CN 210977981U CN 201920433183 U CN201920433183 U CN 201920433183U CN 210977981 U CN210977981 U CN 210977981U
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Abstract
The embodiment of the application describes a volute of a range hood, a fan and a range hood. The volute (2) of the range hood comprises an air inlet (100) and an air outlet (200), wherein the area of the air inlet (100) is adjustable. By adjusting the area of the air inlet, the efficiency of the range hood under some working condition points can be improved, and the working condition interval of the range hood suitable for operation is widened.
Description
[ technical field ] A method for producing a semiconductor device
The application relates to the field of range hoods, in particular to a volute of a range hood, which comprises a fan of the volute and the range hood of the fan.
[ 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 ]
An object of the present application is to provide a volute of an improved range hood, a range hood including the volute, and a range hood including the fan.
An embodiment of the present application relates to a volute of a range hood. A volute 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 range hood under some working condition points can be improved by adjusting the area of the air inlet, and the working condition interval of the range hood suitable for running is widened.
In some embodiments, the range hood can operate efficiently throughout the operating regime.
Because above-mentioned scheme can promote range hood efficiency under some operating mode points, correspondingly, range hood loses just the work that just reduces on aerodynamic noise naturally, and the noise of range hood when moving will reduce.
It should be noted that, the above-mentioned scheme does not mean that the area of the air inlet needs to be adjusted when each installed range hood is in operation, which depends on the actual working condition of the range hood. For example, when the range hood is in an environment with a large wind resistance, most of the range hood works to resist the wind resistance, the air volume of the range hood is relatively small, and the range hood is prone to having a poor range hood effect, 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 operating characteristics of the range hood 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 range hood 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 volute 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 baffles. 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 the blocking plates are arranged according to the principle of iris diaphragm, or a plurality of the blocking plates 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.
Another aspect of the embodiments of the present application relates to a fan of a range hood, which includes a volute casing and an impeller accommodated in the volute casing according to any one of the above embodiments.
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 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.
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, the inner diameter of the first impeller is defined as D1, the inner diameter of the second impeller is defined as D2, 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 [0.8D1, D1 ]; when the air volume of the fan is in the range of (0, 0.4Q), the diameter of the air inlet is adjusted to be [0.9D2, D2 ].
A further embodiment of the present application relates to a range hood, which includes a fan of a range hood as described in any 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.
[ description of the drawings ]
Fig. 1 is a perspective view of a volute of a range hood according to an embodiment of the present application;
fig. 2 is a front view of a volute of a range hood according to an embodiment of the present disclosure;
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 present application;
FIG. 5 is a schematic view of a volute of a further embodiment of the present application;
fig. 6 is an exploded schematic view of a fan of a range hood according to an embodiment of the present application;
FIG. 7 is a schematic view of a portion of a wind turbine according to another embodiment of the present application;
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 application, 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 application; fig. 2 is a front view of a volute of a range hood according to an embodiment of the present disclosure; 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 disclosure. 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 application. 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 again, fig. 6 is an exploded schematic view of a fan of a range hood according to an embodiment of the present application. 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 application, 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, when the fan operates at an air volume of 0.8Q, the efficiency of the fan reaches the maximum of η, if the area of the air inlet is not adjusted, when the air volume of the fan operates at 0.4Q, the efficiency of the fan is reduced to 0.71 η, when the air volume is low, the area of the air inlet is reduced, the condition that the efficiency is obviously reduced along with the reduction of the air volume can be obviously improved, therefore, when the air volume of the fan operates at 0.4Q, the efficiency of the fan can reach 0.77 η by reducing the area of the air inlet, and the efficiency is still maintained at 0.7 η when the air volume of the fan operates at 0.35Q.
In another embodiment of the present application, 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 application; 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)]Within the range, the diameter of the inlet 100 is adjusted to [0.9D ]2，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 application further relates to a range hood, which comprises a fan 1 of the range hood as described in any one of the above embodiments.
In one embodiment of the present application, 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 present application.
The present application has been described in relation to the above embodiments, which are only examples for implementing the present application. It should be noted that the disclosed embodiments do not limit the scope of the present application. Rather, changes and modifications may be made without departing from the spirit and scope of the present application and shall fall within the scope of the appended claims.
Claims (15)
1. A volute (2) 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 volute (2) of a range hood according to claim 1, wherein the inlet (100) has a closed state and an open state, and when the inlet (100) is in the open state, the area of the inlet (100) is adjustable.
3. The spiral casing (2) of the range hood according to claim 1 or 2, wherein the diameter of the air inlet (100) is adjustable.
4. The spiral casing (2) of the range hood according to claim 1 or 2, wherein the area of the air inlet (100) is steplessly adjustable.
5. The spiral case (2) 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 baffles (11, 21, 31).
6. The spiral casing (2) of the range hood according to claim 5, wherein a plurality of the blocking sheets (11) are arranged according to the principle of iris diaphragm, or a plurality of the blocking sheets (21) are arranged according to the principle of louver.
7. The spiral case (2) of the range hood according to claim 6, wherein the adjusting structure (10) comprises an annular adjusting disc (12), the adjusting disc (12) is rotatably disposed on the edge of the air inlet (100), and a plurality of studs are disposed on the adjusting disc (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).
8. The spiral case (2) of the range hood according to claim 5, wherein the adjusting structure (10) comprises two semicircular blocking pieces (31), the two blocking pieces (31) are arranged in a relatively sliding manner, or the two blocking pieces (31) are arranged in a relatively rotating manner.
9. A fan (1) of a range hood, comprising a volute (2) according to any one of claims 1-8 and an impeller (3) housed inside the volute (2).
10. The fan (1) of the range hood according to claim 9, wherein the air inlet (100) is configured such that its area is positively correlated to the air volume of the fan (1).
11. The fan (1) of the range hood according to claim 9, wherein the area of the air inlet (100) is related to the air volume or the static pressure of the fan (1), and the air inlet (100) is configured to automatically adjust the area thereof according to the air volume or the static pressure of the fan (1).
12. The fan (1) of the range hood according to claim 9, 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 in the range of [ 0-0.4Q ], the diameter of the air inlet (100) is adjusted to [0.7D, 0.85D ].
13. The fan (1) of a range hood according to claim 9, comprising a fan-shaped fan-A first impeller (3a) and a second impeller (3b) arranged axially, the first impeller (3a) being located at the periphery of the second impeller (3b), the inner diameter of the first impeller (3a) being 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;
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]；
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 9-13.
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 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 |
|---|---|---|---|
| CN201920433183.4U CN210977981U (en) | 2019-04-01 | 2019-04-01 | Range hood's spiral case, fan and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920433183.4U CN210977981U (en) | 2019-04-01 | 2019-04-01 | Range hood's spiral case, fan and range hood |
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| Publication Number | Publication Date |
|---|---|
| CN210977981U true CN210977981U (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920433183.4U Active CN210977981U (en) | 2019-04-01 | 2019-04-01 | Range hood's spiral case, fan and range hood |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765123A (en) * | 2019-04-01 | 2020-10-13 | 博西华电器（江苏）有限公司 | Range hood's fan and range hood |
| CN114251286A (en) * | 2020-09-25 | 2022-03-29 | 佛山市顺德区美的洗涤电器制造有限公司 | Centrifugal fan, air supply control method and device and range hood |
-
2019
- 2019-04-01 CN CN201920433183.4U patent/CN210977981U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765123A (en) * | 2019-04-01 | 2020-10-13 | 博西华电器（江苏）有限公司 | Range hood's fan and range hood |
| CN114251286A (en) * | 2020-09-25 | 2022-03-29 | 佛山市顺德区美的洗涤电器制造有限公司 | Centrifugal fan, air supply control method and device and range hood |
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