CN213808209U - Fan, a kind of deep pot lid subassembly and cooking utensil - Google Patents
Fan, a kind of deep pot lid subassembly and cooking utensil Download PDFInfo
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- CN213808209U CN213808209U CN202022737726.7U CN202022737726U CN213808209U CN 213808209 U CN213808209 U CN 213808209U CN 202022737726 U CN202022737726 U CN 202022737726U CN 213808209 U CN213808209 U CN 213808209U
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Abstract
The utility model discloses a fan, a cooker cover assembly and a cooking utensil, wherein the fan comprises a volute and a wind wheel; the volute is provided with an air inlet cavity and an air outlet duct communicated with the air inlet cavity; the wind wheel is rotatably arranged in the air inlet cavity; the wind wheel comprises a chassis, an end plate and a plurality of blades, wherein the end plate is arranged opposite to the chassis, the blades are connected with the chassis and the end plate and are annularly arranged, the blades deflect towards the same circumferential direction from inside to outside, and the extending direction of the air outlet duct is consistent with the deflection direction of the blades corresponding to the inner end of the air outlet duct. The utility model discloses a fan can solve the great problem of noise of traditional fan.
Description
Technical Field
The utility model relates to a cooking equipment technical field, in particular to fan, a kind of deep pot lid subassembly and cooking utensil.
Background
A cooking appliance in the market generally includes a pot body and a fan covering an opening of the pot body. The cooking appliance is usually provided with a fan on its fan, so that the fan can drive the material in the storage box to be sucked into the cooker body along with the air flow for cooking. However, in the process of driving the air flow to the air outlet duct, the conventional blower fan generates a large noise, which affects the use experience of the blower fan.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a fan aims at solving the great problem of noise of traditional fan.
In order to achieve the above object, the present invention provides a fan, which comprises a volute and a wind wheel; the volute is provided with an air inlet cavity and an air outlet duct communicated with the air inlet cavity; the wind wheel is rotatably arranged in the air inlet cavity; the wind wheel comprises a chassis, an end plate and a plurality of blades, wherein the end plate is arranged opposite to the chassis, the blades are connected with the chassis and the end plate and are annularly arranged, the blades deflect towards the same circumferential direction from inside to outside, and the extending direction of the air outlet duct is consistent with the deflection direction of the blades corresponding to the inner end of the air outlet duct.
Optionally, the wind wheel uses the center of a circle of the chassis as a center, and the plurality of blades have a proximal end close to the center and a distal end far away from the center, and the plurality of blades are all deflected in the same circumferential direction in an arc shape from the proximal end to the distal end.
Optionally, the height of the blade protruding from the inner surface of the end plate is gradually reduced from the proximal end of the blade to the distal end of the blade.
Optionally, the height of the proximal end of the blade protruding from the inner surface of the end plate is greater than or equal to 8.7mm and less than or equal to 9.8 mm.
Optionally, the height of the distal end of the blade protruding from the inner surface of the end plate is greater than or equal to 5.2mm and less than or equal to 6.3 mm.
Optionally, the thickness of the blade increases and then decreases from the proximal end to the distal end of the blade.
Optionally, the air outlet cross section of the air outlet duct of the fan is arranged in a tapered manner from inside to outside.
Optionally, the fan further comprises an exhaust duct and a silencer; one end of the silencer is connected with the air outlet duct, and the other end of the silencer is connected with the exhaust pipe so as to communicate the fan with the exhaust pipe.
The utility model also provides a cooker cover component and a cooking utensil, wherein the cooker cover component comprises a cover body and a fan; the cover body is suitable for covering an opening on a cooker body of the cooking appliance, the cover body is provided with a feeding bin for supplying rice to the cooker body, and the feeding bin is provided with an exhaust port; and the air inlet cavity of the fan is communicated with the air outlet. The fan comprises a volute, a motor and a wind wheel; the volute is provided with an air inlet cavity and an air outlet duct communicated with the air inlet cavity; the motor is arranged on the volute; the wind wheel is arranged in the air inlet cavity of the volute; the wind wheel comprises a chassis connected with the motor, an end plate arranged opposite to the chassis, and a plurality of blades which are connected with the chassis and the end plate and are annularly arranged, the blades deflect towards the same circumferential direction from inside to outside, and the extending direction of the air outlet duct is consistent with the deflection direction of the blades corresponding to the inner end of the air outlet duct.
Optionally, the feeding bin is provided with a feeding hole communicated with the storage box and a discharging hole used for supplying rice to the pot body; the cooker cover assembly further comprises a sound insulation board, wherein the sound insulation board is arranged in the feeding bin and is opposite to the feeding hole.
The utility model discloses a technical scheme of fan, the extending direction through the air-out wind channel with the fan sets up to, unanimous with the extending direction of the inner blade in this air-out wind channel of correspondence of wind wheel to at the in-process of fan work, the flow direction of the air current that the wind wheel was thrown away just also is unanimous with the extending direction in air-out wind channel, makes the air current that the wind wheel was thrown away directly smoothly get into the air-out wind channel, derives to the air outlet through the air-out wind channel at last. Therefore, the collision of the airflow change path with the blade or the inner wall of the volute can be reduced, the airflow noise is reduced, and the loss of wind energy caused by the change of the airflow path is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a partial schematic structural view of an embodiment of a cooking appliance of the present invention;
FIG. 2 is a partial schematic structural view of the lid assembly of FIG. 1;
fig. 3 is a schematic structural diagram of an embodiment of the fan of the present invention;
FIG. 4 is a front view of the blower of FIG. 3;
FIG. 5 is a cross-sectional view taken along line I-I of FIG. 4;
FIG. 6 is a side view of the blower of FIG. 3;
FIG. 7 is a cross-sectional view taken along line II-II of FIG. 6;
FIG. 8 is a schematic view of the internal structure of a conventional blower in the art;
fig. 9 is a schematic structural view of the muffler of the present invention;
fig. 10 is a schematic view of the internal structure of the feeding bin of the pot cover assembly of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
410 | |
| 200 | |
411 | |
| 210 | |
412 | |
| 220 | |
420 | |
| 230 | |
430 | |
| 231 | |
431 | |
| 232 | |
432 | |
| 240 | |
433 | |
| 300 | |
440 | |
| 400 | |
450 | Silencer with improved structure |
The purpose of the present invention is to provide a novel and improved method and apparatus for operating a computer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if the present invention relates to a directional indication, the directional indication is only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 and 2, the present invention provides a fan 400, wherein the noise generated by the fan 400 during operation is small, which is helpful to improve the experience of the fan 400. The fan 400 can be applied to cooking appliances or other electrical devices requiring driving airflow. For avoiding redundant description, in the following embodiments, the fan is mainly used in the cooking appliance for demonstration, and other electrical devices may be referred to for implementation.
Referring to fig. 3 to 5, in an embodiment of the fan 400 of the present invention, the fan 400 includes a volute 410 and a wind wheel 430; the volute 410 is provided with an air inlet cavity 411 and an air outlet duct 412 communicated with the air inlet cavity 411; the wind wheel 430 is rotatably arranged in the air inlet cavity 411; the wind wheel 430 comprises a base plate 431, an end plate 432 arranged opposite to the base plate 431, and a plurality of blades 433 which are connected with the base plate 431 and the end plate 432 and are arranged in a ring shape; as shown in fig. 6 and 7, the plurality of blades 433 are deflected in the same circumferential direction from the inside to the outside, and the extending direction of the outlet duct 412 coincides with the deflection direction of the blade 433 corresponding to the inner end thereof.
Specifically, the volute 410 is provided with an air inlet 401 and an air outlet 402; wherein, the air inlet 401 is communicated with the air inlet cavity 411; the outlet 402 communicates with an outlet duct 412. The blower 400 further includes a motor 420, the motor 420 is mounted on the volute 410, and an output end of the motor 420 is fixedly connected to a chassis 431 of the wind wheel 430. When the fan 400 works, the motor 420 drives the wind wheel 430 to rotate at a high speed, negative pressure is generated inside the wind wheel 430, and thus external air is sucked into the wind wheel 430 through the air inlet 401 along the axial direction of the wind wheel 430; then, the wind wheel 430 rotates continuously to rotate the airflow by 90 ° and throws the airflow out along the radial direction, and the airflow thrown out by the wind wheel 430 is blown out through the air outlet duct 412 and the air outlet 402.
Referring to fig. 8, for the conventional fan 400 ', although the plurality of blades 433 ' of the conventional fan 400 ' are also deflected inward and outward in the same circumferential direction, the extending direction of the air outlet duct 412 ' is opposite to the deflecting direction of the blade 433 ' corresponding to the inner end thereof. For example, as shown in fig. 8, a plurality of blades 433 'of the conventional fan 400' are deflected clockwise, the blades 433 'corresponding to the inner ends of the outlet air channels 412' are inclined to the right, and the outlet air channels 412 'extend to the left, so that after the wind wheel drives the air flow to be radially thrown out, the flow direction of the air flow is opposite to the extending direction of the outlet air channels 412', the resistance of the air flow entering the outlet air channels 412 is large, and the air flow generates large noise.
Referring to fig. 7, for the wind turbine 400 of the present invention, the extending direction of the wind outlet 412 of the wind turbine 400 is set to be the same as the deflection direction of the blades 433 of the wind wheel 430 corresponding to the inner end of the wind outlet 412. For example, as shown in fig. 4, the blades 433 of the fan 400 of the present invention deflect counterclockwise, the blades 433 corresponding to the inner end of the air outlet duct 412 incline toward the left side, and the air outlet duct 412 also extends toward the left side, so that during the operation of the fan 400, the flowing direction of the air flow thrown out by the wind wheel 430 is consistent with the extending direction of the air outlet duct 412, so that the air flow thrown out by the wind wheel 430 directly and smoothly enters the air outlet duct 412, and finally is guided out to the air outlet 402 through the air outlet duct 412. This can reduce the collision of the air flow changing path with the vane 433 or the inner wall of the scroll case 410, reduce the air flow noise, and reduce the loss of wind energy due to the change of the air flow path.
Referring to fig. 5 to 7, in an embodiment, the wind wheel 430 is centered at a center of the end plate 432, the plurality of blades 433 have a proximal end 433a close to the center and a distal end 433b far away from the center, and the plurality of blades 433 are all deflected in an arc shape from the proximal end 433a to the distal end 433b toward the same circumferential direction. When the wind wheel 430 throws the air flow at the center of the wind wheel along the radial direction, the air flow is guided by the arc-shaped surface of the blade 433, and the air flow is thrown in the tangential direction of the arc-shaped surface of the blade 433, so that the friction between the air flow and the surface of the blade 433 can be reduced, and further, the friction noise and the wind energy loss are reduced.
Further, the thickness of the blade 433 increases and decreases from the proximal end 433a to the distal end thereof. Specifically, the thickness of the proximal end 433a of the blade 433 is greater than that of the distal end 433b thereof, and the portion of the blade 433 with the largest thickness is closer to the proximal end 433a of the blade 433, so that the blade 433 is in a willow-leaf shape, the outer surface of the blade 433 is smooth, which is beneficial to guiding the air flow to be smoothly thrown away, and the flow resistance of the air flow is reduced, thereby reducing the noise generated by the air flow changing path.
Referring to fig. 5 to 7, in one embodiment, the height of the blade 433 protruding from the inner surface of the end plate 432 gradually decreases from the proximal end 433a of the blade 433 to the distal end 433b thereof. By adopting the design, the proximal end 433a of the blade 433 has a larger surface area, which is beneficial for the air flow in the center of the wind wheel 430 to cling to the surface of the proximal end 433a of the blade 433, and then is guided by the blade 433 to flow along the distal end 433b of the blade 433 in the radial direction; and the protrusion of the distal end 433b of blade 433 is less in the height of the internal surface of end plate 432 to make blade 433 wake comparatively sharp, thereby can reduce the resistance that air current and blade 433 wake separated, reduce the production of wake flow noise.
Specifically, please refer to FIG. 6, H in FIG. 61Indicated as the height at which the proximal end 433a of the blade 433 projects from the inner surface of the end plate 432; h2Shown as blade 433The distal end 433b of (a) protrudes above the inner surface of the end plate 432; then there is H1＞H2. The outer edge of the blade 433 distal to the end plate 432 gradually transitions from the proximal end 433a of the blade 433 to the distal end 433b thereof in an arc shape.
With respect to the height ranges of the proximal end 433a and the distal end 433b of the blade 433, the height of the proximal end 433a of the blade 433 protruding from the inner surface of the end plate 432 is optionally greater than or equal to 8.7mm and less than or equal to 9.8mm, that is, 8.7mm ≦ H1≤9.8mm。H1The specific value of (A) can be 8.8mm, 9.0mm, 9.2mm, 9.4mm and the like. In addition, the height of the distal end 433b of the blade 433 protruding from the inner surface of the end plate 432 is greater than or equal to 5.2mm and less than or equal to 6.3mm, that is, H is greater than or equal to 5.2mm and less than or equal to H2≤6.3mm。H2The specific value of (A) can be 5.3mm, 5.5mm, 5.8mm, 6.0mm, 6.2mm and the like. By optimizing the shape of the blades 433 of the fan 400 and the variation in height dimension thereof, the effect of the airflow flowing of the wind wheel 430 can be improved, and the noise generated by the airflow flowing can be reduced.
Referring to fig. 8, based on the above embodiment, it is considered that the air outlet cross section of the air outlet duct 412 of the conventional fan 400 'is generally gradually increased from inside to outside, so that the air outlet duct 412' flares from inside to outside. When the conventional fan 400 'works, the wind wheel drives the airflow to be radially thrown out to the air outlet duct 412', and since the air outlet cross section of the air outlet duct 412 is gradually increased, part of kinetic energy of the airflow is converted into pressure energy, so that the airflow accelerated by the wind wheel is decelerated in the air outlet duct 412, and finally, high-speed and high-pressure air is formed and discharged from the air outlet 402. The conversion of this kinetic energy of the gas flow into pressure energy tends to create a greater pressure, resulting in greater noise.
Referring to fig. 6 and fig. 7, in order to solve the above technical problem, in the present embodiment, optionally, the air outlet cross section of the air outlet duct 412 of the fan 400 is arranged in a tapered shape from inside to outside, that is, the air outlet duct 412 is arranged in a tapered shape from inside to outside. Specifically, can set up baffle 413 in the air-out wind channel of traditional fan 400', this baffle 413 closes with the last side wall in air-out wind channel encloses, and forms the utility model discloses the air-out wind channel 412 that the convergent form of well fan set up.
When the conventional fan 400' works, the wind wheel 430 drives the airflow to be radially thrown out to the air outlet duct 412, and since the air outlet cross section of the air outlet duct 412 is gradually reduced, part of the pressure energy of the airflow is converted into kinetic energy, so that the airflow accelerated by the wind wheel 430 is accelerated in the air outlet duct 412, and finally accelerated air is formed and discharged from the air outlet 402. The airflow converts pressure energy into kinetic energy, so that the pressure is reduced, and larger noise is not easy to generate.
Referring to fig. 7 and 9, based on any of the above embodiments, it is considered that the wind speed at the wind outlet position of the fan 400 is large, and noise is still generated. To reduce noise as much as possible, the fan 400 optionally further includes an exhaust duct 440 and a silencer 450; one end of the silencer 450 is connected to the air outlet duct 412, and the other end of the silencer 450 is connected to the exhaust duct 440, so as to communicate the fan 400 with the exhaust duct 440.
Specifically, the muffler 450 is designed as a two-way chamber, and a plurality of cube or honeycomb cells are arranged inside the muffler 450. When the fan 400 operates, the airflow blown out from the air outlet duct 412 passes through the silencer 450, then flows to the exhaust duct 440 after being silenced by the silencer 450, and finally is discharged from the exhaust duct 440.
The utility model also provides a cooker cover assembly 200, the cooker cover assembly 200 comprises a cover body 210 and a fan 400; the cover body 210 is suitable for covering an opening on the pot body 100 of the cooking appliance, the cover body 210 is provided with a feeding bin 230 for supplying rice to the pot body 100, and the feeding bin 230 is provided with an air outlet 233; the air inlet chamber 411 of the blower 400 is communicated with the air outlet 233. The specific structure of the fan 400 refers to the above embodiments, and since the cooker cover assembly 200 adopts all technical solutions of all the above embodiments, all the beneficial effects brought by the technical solutions of the above embodiments are also achieved, and are not repeated herein.
Referring to fig. 2 and 10, in one embodiment, the feeding bin 230 of the cover assembly 200 is provided with a feeding port 231 for communicating with the storage box 300, and a discharging port 232 for supplying rice to the pot body 100, wherein the feeding port 231 communicates with the storage box 300 through the feeding pipe 220. The storage case 300 may be manufactured with the cooker lid assembly 200 or may be provided by the user. The feeding bin 230 is further provided with a detector for weighing/weighing the material in the feeding bin 230 and opening the discharge port 232 after the weighing/weighing is completed to feed the material into the pot body 100.
When the cooker cover assembly 200 works, the fan 400 is turned on to form a negative pressure, and the negative pressure sucks the material in the storage box 300 into the feeding bin 230 through the feeding pipe 220 via the feeding hole 231 of the feeding bin 230; meanwhile, the sucked air flow enters the fan 400 from the air outlet 233 of the feeding bin 230 and is then discharged to the outside environment from the fan duct by being driven by the fan 400. Of course, in addition to the above-mentioned suction of the material in the storage bin 300 into the feeding bin 230 by the driving of the fan 400, in other embodiments, the user may also place the material into the feeding bin 230 by himself. The material may be a grain such as a material or wheat, or a bean such as soybean or peanut.
Referring to fig. 10, it is further considered that, during the rice suction process of the fan 400, the airflow carries the material from the feeding port 231 of the feeding bin 230 into the feeding bin 230, and due to the high airflow velocity, the sucked material easily collides with the inner wall of the feeding bin 230 after passing through the feeding port 231, thereby generating high impact noise. To solve this noise problem, optionally, the pot cover assembly 200 further includes an acoustic baffle 240, and the acoustic baffle 240 is disposed in the feeding bin 230 and opposite to the feeding port 231. Therefore, the material sucked from the inlet 231 by the fan 400 collides with the baffle 240, and noise generated by the collision is isolated and eliminated by the baffle 240, thereby reducing collision noise and greatly reducing noise generated when the fan 400 operates.
Referring to fig. 1, the present invention further provides a cooking appliance, which includes a pot body 100 and a pot cover assembly 200; wherein, the pot cover assembly 200 covers the opening of the pot body 100. The specific structure of the cooker cover assembly 200 refers to the above embodiments, and since the cooking appliance adopts all technical solutions of all the above embodiments, all the beneficial effects brought by the technical solutions of the above embodiments are also achieved, and no further description is given here. It should be noted that the cooking appliance may be an electric cooker, a pressure cooker or other appliance having a cooking function. In this embodiment, the cooking appliance is an electric cooker.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (12)
1. A fan, characterized in that the fan comprises:
the volute is provided with an air inlet cavity and an air outlet duct communicated with the air inlet cavity; and
the wind wheel is rotatably arranged in the air inlet cavity;
the wind wheel comprises a chassis, an end plate and a plurality of blades, wherein the end plate is arranged opposite to the chassis, the blades are connected with the chassis and the end plate and are annularly arranged, the blades deflect towards the same circumferential direction from inside to outside, and the extending direction of the wind outlet duct is consistent with the deflection direction of the blades corresponding to the inner end of the wind outlet duct.
2. The fan according to claim 1 wherein, with reference to a center of the end plate, the plurality of blades have proximal ends proximate to the center and distal ends distal from the center, and wherein the plurality of blades are each curved from the proximal ends to the distal ends thereof to deflect in a same circumferential direction.
3. The fan of claim 2 wherein the height of the blade projecting from the inner surface of the end plate decreases from the proximal end of the blade to the distal end of the blade.
4. The fan of claim 3 wherein the proximal end of the blade protrudes above the inner surface of the end plate by a height of greater than or equal to 8.7mm and less than or equal to 9.8 mm.
5. The fan of claim 3 wherein the distal end of the blade projects above the inner surface of the end plate by a height of greater than or equal to 5.2mm and less than or equal to 6.3 mm.
6. The fan according to any of claims 2 to 5 wherein the blades increase in thickness from their proximal ends to their distal ends and decrease in thickness.
7. The fan according to any one of claims 1 to 5, wherein the outlet cross section of the outlet duct of the fan is gradually reduced from inside to outside.
8. The fan as claimed in any one of claims 1 to 5, wherein the fan further comprises an exhaust duct and a silencer; one end of the silencer is connected with the air outlet duct, and the other end of the silencer is connected with the exhaust pipe.
9. A pot lid assembly, comprising:
the cooking device comprises a cover body, a cooking cavity and a cover body, wherein the cover body is suitable for covering an opening on a pot body of the cooking device, the cover body is provided with a feeding bin for feeding the pot body, and the feeding bin is provided with an exhaust port; and
the blower of any one of claims 1-8, wherein an air inlet chamber of the blower is in communication with the air outlet.
10. The pot lid assembly of claim 9, wherein said feed bin has a feed opening for communicating with a storage bin, and a discharge opening for feeding said pot body;
the cooker cover assembly further comprises a sound insulation board, wherein the sound insulation board is arranged in the feeding bin and is opposite to the feeding hole.
11. A cooking appliance, characterized in that it comprises:
a pot body having an opening; and
the pot lid assembly of any one of claims 9 or 10, covering the opening of the pot body.
12. The cooking appliance of claim 11, wherein the cooking appliance is a rice cooker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022737726.7U CN213808209U (en) | 2020-11-23 | 2020-11-23 | Fan, a kind of deep pot lid subassembly and cooking utensil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022737726.7U CN213808209U (en) | 2020-11-23 | 2020-11-23 | Fan, a kind of deep pot lid subassembly and cooking utensil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213808209U true CN213808209U (en) | 2021-07-27 |
Family
ID=76937618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022737726.7U Active CN213808209U (en) | 2020-11-23 | 2020-11-23 | Fan, a kind of deep pot lid subassembly and cooking utensil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213808209U (en) |
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2020
- 2020-11-23 CN CN202022737726.7U patent/CN213808209U/en active Active
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