CN215584015U - Air duct switching device, cleaning head and dust collector - Google Patents
Air duct switching device, cleaning head and dust collector Download PDFInfo
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- CN215584015U CN215584015U CN202121616228.5U CN202121616228U CN215584015U CN 215584015 U CN215584015 U CN 215584015U CN 202121616228 U CN202121616228 U CN 202121616228U CN 215584015 U CN215584015 U CN 215584015U
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Abstract
The utility model provides an air duct switching device, a cleaning head and a dust collector, wherein the air duct switching device is arranged in an air duct pipe fitting, the air duct pipe fitting is provided with a plurality of flow passages which have different directions and are intersected at one point, and the switching device comprises: the reversing valve body is arranged in a first flow channel of the plurality of flow channels, the whole reversing valve body is tubular, the outer wall of the reversing valve body is in sealing contact with the inner wall of the first flow channel, one end of the reversing valve body is a reversing plugging end located at the intersection point of the plurality of flow channels, and the reversing plugging end is a semi-closed structure with a vent at one side; and the reversing power component can drive the reversing valve body to rotate circumferentially so as to switch the flow channel corresponding to the vent. Based on the technical scheme of the utility model, the uniqueness of the working air channel is ensured, the actual passing sectional area of the airflow always corresponds to the sectional area of a single runner, the actual passing sectional area of the airflow is greatly reduced, the wind speed is improved, and the problem of wind speed reduction of electrical equipment caused by simultaneous passing of multiple runners is solved.
Description
Technical Field
The utility model relates to the technical field of air duct structures of electric appliances, in particular to an air duct switching device, a cleaning head and a dust collector.
Background
At present, a plurality of electrical devices which realize corresponding functions based on air flow gradually develop the function of multi-directional generation of air flow, that is, a plurality of air ducts with different directions, such as dust collectors and other blowing devices, are provided to adapt to the changing user requirements and improve the user experience.
Taking a dust collector as an example, the existing dust collector with the bidirectional air inlet cleaning head can ensure that a user can collect dry garbage on the ground by dust collection when pushing forwards and pulling backwards. However, the current bidirectional air inlet cleaning head has the following problems: the dust suction capacity of the cleaner is obviously reduced compared with a cleaner head with a single air inlet. The reason is that due to bidirectional dust collection, the bidirectional air inlet cleaning head needs to ensure that the front air inlet and the rear air inlet can pass dry garbage with common diameters, and an air inlet with the same specification is additionally arranged on the basis of a single-air-inlet cleaning head in the air inlet structure of the existing double-air-inlet cleaning head, so that the sectional area of the air inlet of the double-air-inlet cleaning head is increased by one time compared with that of the single-air-inlet cleaning head, and further, under the condition that the power of a motor is not changed, the air speed of the air inlet is obviously reduced along with the increase of the sectional area of the air inlet, and finally, the problem that the dust collection capacity of the double-air-inlet cleaning head is obviously reduced is caused.
The above problem is a common potential drawback of some other electrical devices that implement functions based on air flow, that is, while having multiple air ducts with different directions, the total area of the air inlets and the air outlets of the air ducts is increased, which results in a great reduction in the flow rate of air flow in a specific single direction. There is therefore a need for an air duct switching device that can increase the speed of air flow at the inlet and outlet without changing the motor power.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the flow velocity of airflow in a single direction is reduced because related electrical equipment with a multi-directional air channel does not have the air channel switching function in the prior art, the application provides an air channel switching device, a cleaning head and a dust collector.
In a first aspect, the present invention provides an air duct switching device disposed in an air duct pipe, where the air duct pipe has a plurality of flow channels that have different directions and meet at a point, and the switching device includes:
the reversing valve body is arranged in a first flow channel of the plurality of flow channels, one end of the reversing valve body is a reversing plugging end positioned at the intersection point of the plurality of flow channels, and the reversing plugging end is a semi-closed structure with a vent at one side;
the reversing power component comprises a transmission component matched with the reversing valve body, and the transmission component can drive the reversing valve body to rotate circumferentially so as to switch the flow channel corresponding to the vent opening through rotation.
In one embodiment, the plurality of flow channels include an air inlet flow channel and an air outlet flow channel, and the first flow channel is the only air inlet flow channel or the only air outlet flow channel. Through the embodiment, the flow channel where the air channel switching device is located is a necessary path for air flow, and the reliability of the switching function of the air channel switching device is ensured.
In one embodiment, the reversing valve body has an annular groove extending along the circumferential direction on the circumferential surface, the groove is provided with a transmission gear to form an outer gear ring, and the transmission component is a gear matched with the outer gear ring.
In one embodiment, the reversing power component is arranged on the outer wall of the first flow passage, and the wall surface of the first flow passage is provided with an opening corresponding to the transmission assembly so that the transmission assembly can pass through and be matched with the reversing valve body. Through this embodiment, the gear cooperation of drive assembly sets up the outer ring gear in the recess on the switching-over valve body, and when gear and outer ring gear meshing like this, the teeth of a cogwheel part of gear and the cell wall of recess are spacing each other, and then play the locate function to the switching-over valve body.
In one embodiment, a magnet is arranged on a wall surface of one side of the reversing valve body, and the reversing power component is provided with a Hall sensor capable of sensing the magnetic field intensity of the magnet. Through this embodiment, the relative position of magnet can be obtained to the magnetic field intensity change of the magnet that hall sensor sensed, and then can judge the orientation of vent through the position of magnet, provides the basis of position, direction for the drive of switching-over power part to the switching-over valve body.
In one embodiment, the magnet is disposed on one side of the vent or on the other side of the vent relative to the side on which the vent is disposed. Through this embodiment, set up magnet as the opposite side that corresponds one side or relative vent place one side at vent place, can simplify the judgement to the vent orientation like this.
In one embodiment, the reversing power component further comprises an acceleration sensor, and the acceleration sensor can sense the movement direction of the electrical equipment where the switching device is located so as to control the reversing power component to drive the reversing valve body. With the present embodiment, when the air duct switching device is applied to a specific electric appliance, the switching of the air duct can be automatically controlled according to the moving direction of the electric appliance.
In one embodiment, a projection of an outer contour of the vent on a cross section of the flow channel to which the vent can correspond is a circle, and a size of the circle is the same as a size of the cross section of the flow channel. Through this embodiment, the cross section size phase-match of vent and runner avoids producing the air current through the runner and blocks, guarantees corresponding electrical equipment's normal function.
In a second aspect, the utility model provides a cleaning head, which comprises the air duct switching device and an air duct three-way pipe, wherein the air duct three-way pipe is provided with two air inlet flow passages and one air outlet flow passage, and the air duct switching device is arranged in the air outlet flow passage.
In a second aspect, the utility model provides a vacuum cleaner comprising a cleaner head as described above.
The features mentioned above can be combined in various suitable ways or replaced by equivalent features as long as the object of the utility model is achieved.
Compared with the prior art, the air duct switching device, the cleaning head and the dust collector at least have the following beneficial effects:
the air channel switching device can be applied to electrical equipment with multiple air channels and multiple flow channels, and the air channels are switched according to actual requirements, so that the uniqueness of the air channels when the electrical equipment works is ensured, namely only one group of corresponding air inlet flow channels and air outlet flow channels form a working air channel at the same time, and the rest air inlet and outlet flow channels are closed, so that the actual passing sectional area of airflow always corresponds to the sectional area of a single flow channel. Compared with the prior art, the actual passing sectional area of the airflow is greatly reduced, the wind speed is improved, and the problem that the wind speed is reduced due to the fact that the airflow passes through the electrical equipment through multiple runners at the same time is solved.
Drawings
The utility model will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:
FIG. 1 is a schematic view of the air duct switching device of the present invention assembled in an air duct pipe;
FIG. 2 is a schematic structural diagram of a reversing valve body of the air duct switching device of the present invention;
in the drawings, like parts are provided with like reference numerals. The drawings are not to scale.
Reference numerals:
10-air duct pipe fitting, 101-air inlet, 11-first flow channel, 111-opening, 20-reversing valve body, 21-reversing blocking end, 211-ventilation opening, 22-groove, 23-magnet, 30-reversing power component, 31-transmission component, 32-reversing motor and 40-rolling brush.
Detailed Description
The utility model will be further explained with reference to the drawings.
The embodiment of the present invention provides an air duct switching device, which is disposed in an air duct pipe 10, wherein the air duct pipe 10 has a plurality of flow passages which have different directions and intersect at a point, and the switching device includes:
the reversing valve body 20 is arranged in a first flow channel 11 of the plurality of flow channels, one end of the reversing valve body 20 is a reversing plugging end 21 positioned at the intersection point of the plurality of flow channels, and the reversing plugging end 21 is a semi-closed structure with a vent 211 on one side;
the reversing power component 30 comprises a transmission component 31 matched with the reversing valve body 20, and the transmission component 31 can drive the reversing valve body 20 to rotate circumferentially so as to switch the flow channel corresponding to the vent 211 through rotation.
Specifically, as shown in fig. 1 and fig. 2 of the accompanying drawings, the air duct switching device of the present invention is disposed in a multi-channel air duct pipe 10 of a corresponding electrical device, and the multiple channels are mutually interacted at a point, which is a key point for implementing air duct switching. The whole air duct switching device corresponds to one of the plurality of flow passages of the air duct pipe 10 and is the first flow passage 11.
The switching device mainly comprises a reversing valve body 20 and a reversing power component 30 for driving the reversing valve body 20 to move so as to switch an air channel, wherein the reversing valve body 20 is integrally tubular, one end of the reversing valve body 20 is a completely open pipe orifice, the other end of the reversing valve body is a reversing plugging end 21 with a ventilation opening 211, and the reversing plugging end 21 is of a semi-closed structure. The reversing valve body 20 is arranged in the first flow channel 11 in a penetrating manner, the outer wall of the reversing valve body is in sealing contact with the inner wall of the first flow channel 11, the reversing plugging end 21 of the reversing valve body is arranged at the junction of the plurality of flow channels and plays a certain plugging function for the junction, and then the airflow passing through the air channel pipe fitting 10 can only circulate between the first flow channel 11 and one of the other flow channels through the ventilation opening 211 on the reversing plugging end 21 of the reversing valve body 20. The direction of the vent 211 on the reversing plugging end 21 of the reversing valve body 20 can be changed by providing power by the reversing power component 30 and driving the reversing valve body 20 to rotate circumferentially by the transmission component 31, that is, a flow channel corresponding to the vent 211 is selected from a plurality of flow channels of the air duct pipe fitting 10. The flow channels corresponding to the vent holes 211 are communicated with the first flow channel 11 to jointly form a working air channel, and other flow channels not corresponding to the vent holes 211 are blocked by the reversing blocking end 21, so that the switching of the working air channels is realized, and meanwhile, the ventilation sectional area of the working air channel is ensured to be equal to the ventilation sectional area of a single flow channel, but not the total ventilation sectional area of all the flow channels, so that the ventilation sectional area in actual working is reduced, the air flow speed is improved under the condition that the power of a main motor 32 of the equipment is not changed, and the performance of corresponding electrical equipment is improved.
Preferably, the plurality of channels include an air inlet channel and an air outlet channel, and the first channel 11 is the only air inlet channel or the only air outlet channel.
Specifically, the air duct pipe 10 must have two channels, namely an air inlet channel and an air outlet channel, in the multiple channels, so to ensure the reliability of the switching function of the air duct switching device, the first channel 11 where the air duct switching device is located must be a path through which the air flow must pass, and therefore the first channel 11 must have uniqueness, that is, the only air inlet channel or the only air outlet channel, which is determined by the type of the electrical equipment where the switching device is actually located. For example, if the electrical equipment where the air duct switching device is located is a dust collector, as shown in fig. 1, the air duct pipe 10 has a plurality of dust suction ports (air inlet channels) and an air outlet channel (to a dust collecting bin) according to the function of the dust collector, and the air duct switching device should be correspondingly disposed in the air outlet channel at this time. If the electrical equipment where the air channel switching device is located is the blowing equipment, then according to the function of the blowing equipment, the air channel pipe fitting 10 has a plurality of air outlets (air outlet channels) and an air inlet channel (communicating fan), and at this time, the air channel switching device should be correspondingly arranged on the air inlet channel.
If the first flow channel 11 is not the only air inlet flow channel or the only air outlet flow channel, specifically to an electrical device, such as the above-mentioned vacuum cleaner shown in fig. 1, the air channel switching device is disposed in one of the air inlet flow channels, and then the air channel switching device actually only plays a role in opening and closing the air channel; if the vent 211 corresponds to the air outlet channel, the air inlet channel is opened and serves as a working air channel communicated with the air outlet channel; if the air vent 211 does not correspond to the air outlet channel or other air inlet channels, the air outlet channel in the air duct pipe 10 is blocked, the air path is not through, and the function of normally guiding the air flow cannot be realized.
In one embodiment, the diverter valve body 20 has a circumferentially extending annular recess 22 on its peripheral surface, the recess 22 having gear teeth disposed therein to form an outer ring gear, and the gear assembly 31 is a gear that engages the outer ring gear.
Specifically, as shown in fig. 1 and fig. 2 of the drawings, the reversing valve body 20 and the reversing power component 30 are mutually matched and driven through a gear and an external gear ring mechanism, wherein the external gear ring is arranged in a groove 22 on the peripheral surface of the reversing valve body 20, and a transmission assembly 31 of the gear is matched with the external gear ring for transmission.
In one embodiment, the reversing power member 30 is disposed on the outer wall of the first flow passage 11, and the wall surface of the first flow passage 11 has an opening 111 corresponding to the transmission assembly 31 for the transmission assembly 31 to pass through and engage with the reversing valve body 20.
Specifically, as shown in fig. 1, the reversing power unit 30 is provided in a housing fixed to an outer wall surface of the first flow passage 11, and the wall surface of the first flow passage 11 has an opening 111, and the transmission assembly 31 is passed through the opening 111 to engage the reversing valve body 20. Specifically, the transmission assembly 31 is a gear, and the reversing valve body 20 is provided with an external gear ring arranged in the groove 22, so that when the gear is meshed with the external gear ring, the gear tooth part of the gear and the groove wall of the groove 22 are limited mutually, and the function of positioning the reversing valve body 20 is further achieved.
Furthermore, the power source of the reversing power component 30 is a reversing motor 32, the power output end of the reversing motor 32 is connected with the transmission component 31, and the reversing motor 32 adopts a servo motor 32 which can be automatically controlled.
In one embodiment, a magnet 23 is disposed on a wall surface of one side of the reversing valve body 20, and a hall sensor capable of sensing the magnetic field strength of the magnet 23 is provided in the reversing power unit 30.
Specifically, according to the hall effect, a hall sensor (not shown in the drawings) can sense the strength of the magnetic field generated by the magnet 23, and since the hall sensor is stationary, the strength of the magnetic field generated by the magnet 23 itself is also constant and can move along with the reversing valve body 20, so that the relative position of the magnet 23 can be obtained by the variation of the magnetic field strength of the magnet 23 sensed by the hall sensor, and the relative position of the vent 211 of the reversing valve body 20 is fixed based on the magnet 23, so that the orientation of the vent 211 can be judged according to the position of the magnet 23, and a basis of the position and the direction is provided for the driving of the reversing valve body 20 by the reversing power part 30.
Preferably, the magnet 23 is disposed on the side where the vent 211 is located, or the magnet 23 is disposed on the other side with respect to the side where the vent 211 is located.
Specifically, the magnet 23 is provided to correspond to one side of the vent 211 or the other side of the vent 211, which simplifies the determination of the orientation of the vent 211. For example, when the hall sensor senses the maximum magnetic field strength of the magnet 23, it is proved that the magnet 23 is located at the side closest to the hall sensor, and the ventilation opening 211 is directed toward the side where the hall sensor is located. Similarly, when the direction of the vent 211 is switched, whether the rotation direction of the reversing valve body 20 is correct or not and whether the rotation movement is in place or not can be determined by the magnetic field intensity of the magnet 23 obtained by the hall sensor.
In one embodiment, the reversing power unit 30 further has an acceleration sensor therein, and the acceleration sensor can sense the movement direction of the electrical equipment where the switching device is located, so as to control the driving of the reversing valve body 20 by the reversing power unit 30.
In particular, when the air duct switching device is applied to a specific electric appliance, the switching of the air duct may be automatically controlled according to the moving direction of the electric appliance. For example, in the above-mentioned vacuum cleaner, an acceleration sensor (not shown in the drawings) can sense the current moving direction of the vacuum cleaner and issue a switching command for controlling the reversing power component 30 to drive the reversing valve body 20 to rotate to the flow channel of the side of the vent 211 corresponding to the current moving direction; after receiving the switching command, the reversing motor 32 drives the reversing valve body 20 to rotate to switch the air channels, and the accuracy of the actual rotation of the reversing valve body 20 is controlled based on the induction of the hall sensor to the magnetic field intensity of the magnet 23 on the reversing valve body 20.
Further, as shown in fig. 1, when the hall sensor detects that the direction of the air vent 211 is consistent with the moving direction of the cleaning head, the reversing motor 32 does not act, and the posture of the reversing valve body 20 is kept unchanged; when the hall sensor detects that the direction of the vent 211 is not consistent with the moving direction of the cleaning head, the reversing motor 32 starts to act, drives the reversing valve body 20 to rotate by a preset angle until the direction of the vent 211 is consistent with the moving direction of the cleaning head, and then stops acting.
In one embodiment, the projection of the outer contour of the vent 211 on the cross section of the flow channel to which the vent can correspond is a circle, and the size of the circle is the same as the size of the cross section of the flow channel.
Specifically, the vent 211 is matched with the cross section of the flow channel, so that the air flow passing through the flow channel is prevented from being blocked, and the normal function of the corresponding electrical equipment is ensured.
The embodiment of the utility model provides a cleaning head, which comprises the air channel switching device and an air channel three-way pipe, wherein the air channel three-way pipe is provided with two air inlet flow channels and one air outlet flow channel, and the air channel switching device is arranged in the air outlet flow channel.
Specifically, as shown in fig. 1, the cleaning head of the vacuum cleaner includes an air duct pipe 10, an air duct three-way pipe, which includes two air inlets as dust collecting ports and an air outlet flow passage (dust collecting flow passage) where an air duct switching device is located, and two air inlets 101 are respectively corresponding to the roller brushes 40. According to the moving direction of the cleaning head (the moving direction is towards one side of the air inlet 101) sensed by the acceleration sensor, the reversing motor 32 of the reversing power component 30 drives the reversing valve body 20 to rotate and accurately controls the reversing valve body 20 to rotate to the flow channel where the air inlet 101 on the side of the air vent 211 corresponding to the moving direction of the cleaning head is located according to the position information obtained by the hall sensor.
It should be noted that, the three channels of the three-way pipe of the air duct of the cleaner head of the dust collector have the same diameter. Based on the structure of the cleaning head, if the number of the flow passages corresponding to the air inlet 101 is further increased, based on the characteristics of the physical structure, the diameter of the first flow passage 11 is larger than that of the flow passage corresponding to the air inlet 101.
In addition, actually, the cleaning head structure (excluding the roller brush 40) shown in fig. 1 of the drawings can also be directly applied to other electrical equipment, for example, a blowing device, and the first flow channel 11 where the air channel switching device is located can be used as an air inlet flow channel and can also be used as an air outlet flow channel. When the first flow channel 11 is used as an air inlet flow channel, the corresponding air blowing equipment is air blowing equipment with a plurality of air outlets, and the air channel switching device can switch air channels for air outlet, namely switch the direction of air outlet; when the first flow channel 11 is used as an air outlet flow channel, the corresponding air blowing devices are multiple air sources, the air channel switching device can switch the air channels for air inlet to correspond to different air sources, so that the air sources can be switched, and the air sources can have different parameters such as air types (cold air, hot air, fresh air and the like), air speeds and air quantities.
The embodiment of the utility model provides a dust collector which comprises the cleaning head and further has all the technical effects of the dust collector.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Although the utility model herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (10)
1. An air duct switching device, disposed in an air duct pipe, the air duct pipe having a plurality of flow passages with different directions and intersecting at a point, the switching device comprising:
the reversing valve body is arranged in a first flow channel of the plurality of flow channels, one end of the reversing valve body is a reversing plugging end positioned at the intersection point of the plurality of flow channels, and the reversing plugging end is a semi-closed structure with a vent at one side;
the reversing power component comprises a transmission component matched with the reversing valve body, and the transmission component can drive the reversing valve body to rotate circumferentially so as to switch the flow channel corresponding to the vent opening through rotation.
2. The air duct switching device according to claim 1, wherein the plurality of flow channels include an inlet flow channel and an outlet flow channel, and the first flow channel is the only inlet flow channel or the only outlet flow channel.
3. The air duct switching device according to claim 1, wherein the reversing valve body has a circumferential groove extending in a circumferential direction, the groove has a gear to form an outer ring gear, and the gear is a gear engaged with the outer ring gear.
4. The air duct switching device according to any one of claims 1 to 3, wherein the reversing power component is disposed on an outer wall of the first flow passage, and an opening corresponding to the transmission assembly is formed in a wall surface of the first flow passage, so that the transmission assembly can pass through and engage with the reversing valve body.
5. The air duct switching device according to any one of claims 1 to 3, wherein a magnet is disposed on a wall surface of one side of the reversing valve body, and the reversing power unit has a Hall sensor therein capable of sensing a magnetic field strength of the magnet.
6. The air duct switching device according to claim 5, wherein the magnet is disposed on one side of the vent or on the other side of the vent.
7. The air duct switching device according to claim 5, wherein the reversing power component further comprises an acceleration sensor, and the acceleration sensor can sense the movement direction of the electrical equipment where the switching device is located so as to control the reversing power component to drive the reversing valve body.
8. The air duct switching device according to claim 1, wherein a projection of an outer contour of the ventilation opening on a cross section of the flow passage to which the ventilation opening can correspond is a circle, and a size of the circle is the same as a size of the cross section of the flow passage.
9. A cleaning head comprising the air duct switching device according to any one of claims 1 to 8; and
the air channel three-way pipe is provided with two air inlet runners and an air outlet runner, and the air channel switching device is arranged in the air outlet runner.
10. A vacuum cleaner comprising a cleaner head as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121616228.5U CN215584015U (en) | 2021-07-15 | 2021-07-15 | Air duct switching device, cleaning head and dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121616228.5U CN215584015U (en) | 2021-07-15 | 2021-07-15 | Air duct switching device, cleaning head and dust collector |
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| CN215584015U true CN215584015U (en) | 2022-01-21 |
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| CN202121616228.5U Active CN215584015U (en) | 2021-07-15 | 2021-07-15 | Air duct switching device, cleaning head and dust collector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414266A (en) * | 2022-01-28 | 2022-04-29 | 重庆长安汽车股份有限公司 | Air volume reversing device for air conditioning system comprehensive performance test bed |
-
2021
- 2021-07-15 CN CN202121616228.5U patent/CN215584015U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414266A (en) * | 2022-01-28 | 2022-04-29 | 重庆长安汽车股份有限公司 | Air volume reversing device for air conditioning system comprehensive performance test bed |
| CN114414266B (en) * | 2022-01-28 | 2023-07-07 | 重庆长安汽车股份有限公司 | Air quantity reversing device for comprehensive performance test bed of air conditioning system |
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