CN111648981A - Fan with multi-wind-path switching function - Google Patents
Fan with multi-wind-path switching function Download PDFInfo
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- CN111648981A CN111648981A CN202010686720.3A CN202010686720A CN111648981A CN 111648981 A CN111648981 A CN 111648981A CN 202010686720 A CN202010686720 A CN 202010686720A CN 111648981 A CN111648981 A CN 111648981A
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- Prior art keywords
- air inlet
- air
- inlet hole
- volute
- wind
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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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
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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
- F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
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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
- F04D29/4226—Fan casings
- F04D29/4246—Fan casings comprising more than one outlet
Abstract
The invention discloses a fan with a multi-wind-path switching function, which comprises a volute, an impeller, a first wind shielding mechanism and a second wind shielding mechanism, wherein the casing is provided with a wind outlet, a first wind inlet and a second wind inlet, the wind outlet is arranged on the circumferential side wall of the volute, the first wind inlet and the second wind inlet are respectively arranged on two opposite axial side walls of the volute, the impeller is rotatably arranged in the volute, the first wind shielding mechanism is arranged corresponding to the first wind inlet and is used for opening or closing the first wind inlet, and the second wind shielding mechanism is arranged corresponding to the second wind inlet and is used for opening or closing the second wind inlet. Specifically, two air paths are arranged in the fan, so that the problem of increase of the number of the fans due to increase of the air paths is solved, the size is reduced, the cost is reduced, and in addition, the two air paths are switched by the control of the wind shielding mechanism, so that the quick switching of the air paths is realized.
Description
Technical Field
The invention relates to the technical field of air supply equipment, in particular to a fan with a multi-air-path switching function.
Background
This section provides background information related to the present disclosure only and is not necessarily prior art.
The centrifugal fan generally includes an impeller rotatably disposed in a volute, and the volute is provided with an air inlet and an air outlet, the air inlet direction is along the axial direction of the impeller, the air outlet direction is along the radial direction of the impeller, and when the impeller rotates, an air flow enters from the air inlet and then flows out from the air outlet to form a fixed air path.
In some application fields, the airflow does not always flow along one airflow path (for example, in a dust-proof mask, the airflow path changes along with the breathing of a person, that is, when the person inhales, the airflow flows into the mask from the outside of the mask through the filter cotton and is sent to the mouth and nose of the person, and when the person exhales, the airflow flows into the mask from the mouth and nose and finally flows out of the mask through an exhalation valve).
However, the use of a plurality of centrifugal fans to control a plurality of air passages is bulky, costly, and does not allow for rapid switching of the air passages.
Disclosure of Invention
The invention aims to at least solve the problems that a plurality of centrifugal fans are prevented from controlling a plurality of air paths, the volume is large, the cost is high, and the air paths cannot be switched quickly. The purpose is realized by the following technical scheme:
the invention provides a fan with a multi-wind-path switching function, which comprises:
the volute comprises a volute body, wherein an air outlet, a first air inlet and a second air inlet are formed in the shell body, the air outlet is formed in the circumferential side wall of the volute body, and the first air inlet and the second air inlet are respectively formed in two opposite axial side walls of the volute body;
an impeller rotatably disposed within the volute;
the first wind shielding mechanism is arranged corresponding to the first air inlet and is used for opening or closing the first air inlet;
and the second wind shielding mechanism is arranged corresponding to the second air inlet and is used for opening or closing the second air inlet.
According to the fan with the multi-air-path switching function, the impeller is arranged inside the volute and can rotate relative to the volute, the two opposite side walls of the volute are respectively provided with the first air inlet and the second air inlet, the first wind shielding mechanism is matched with the first air inlet and used for controlling the opening or closing of the first air inlet, the second wind shielding mechanism is matched with the second air inlet and used for controlling the opening or closing of the second air inlet, and the air outlet is arranged on the axial side wall of the volute, wherein the first air inlet, the inner part of the volute and the air outlet form a first air path of the fan, the second air inlet, the inner part of the volute and the air outlet form a second air path of the fan, when the first air path is required to be used, the first wind shielding mechanism is opened, the second wind shielding mechanism is closed, air flows through the path of the first air inlet → the inner part of the volute → the air outlet, and when the, the second wind blocking mechanism is opened, the first wind blocking mechanism is closed, and air flows through the path of the second air inlet → the inside of the scroll → the air outlet. The fan is internally provided with the two air paths, so that the problem of increase of the number of the fans caused by increase of the air paths is solved, the size is reduced, the cost is reduced, and in addition, the two air paths are switched by the control of the wind shielding mechanism, so that the quick switching of the air paths is realized.
In addition, the fan with the multi-wind-path switching function according to the invention can also have the following additional technical characteristics:
in some embodiments of the present invention, the blower with multiple air path switching function further includes a housing, the volute is rotatably disposed in the housing, and the housing is provided with:
the first air inlet hole can be arranged corresponding to the first air inlet, and the first wind shielding mechanism is used for controlling the first air inlet to be communicated or disconnected with the outside through the first air inlet hole;
the second air inlet hole can be arranged corresponding to the second air inlet, and the second air blocking mechanism is used for controlling the second air inlet to be communicated with the outside or disconnected from the outside through the second air inlet hole;
the volute casing is arranged on the shell, and the air outlet is communicated with the outside through any air outlet.
In some embodiments of the present invention, the first wind shielding mechanism includes a first baffle plate, the first baffle plate is disposed at the first air inlet hole and is matched with the first air inlet hole, and the first baffle plate can rotate relative to the first air inlet hole to open or close the first air inlet hole.
In some embodiments of the present invention, the first wind shielding mechanism includes a first driving member, and the first driving member is in transmission connection with the first baffle.
In some embodiments of the present invention, the second air blocking mechanism includes a second blocking plate, the second blocking plate is disposed at the second air inlet hole and is matched with the second air inlet hole, and the second blocking plate can rotate relative to the second air inlet hole to open or close the second air inlet hole.
In some embodiments of the present invention, the second air blocking mechanism includes a second driving member, and the second driving member is in transmission connection with the second baffle.
In some embodiments of the present invention, the first wind shielding mechanism is a first outer surface of the scroll casing facing the first air inlet hole, the first outer surface closes the first air inlet hole when the scroll casing rotates relative to the housing and the first air inlet is staggered relative to the first air inlet hole, and the first air inlet is communicated with the outside through the first air inlet hole when the scroll casing rotates relative to the housing and at least a portion of the first air inlet is disposed corresponding to at least a portion of the first air inlet hole.
In some embodiments of the present invention, the number of the first air inlets is multiple, and each of the first air inlets is spaced along the circumferential direction of the volute.
In some embodiments of the present invention, the second wind shielding mechanism is a second outer surface of the scroll casing facing the second air inlet hole, when the scroll casing rotates relative to the housing and the second air inlet is staggered relative to the second air inlet hole, the second outer surface closes the second air inlet hole, and when the scroll casing rotates relative to the housing and at least a portion of the second air inlet is disposed corresponding to at least a portion of the second air inlet hole, the second air inlet is communicated with the outside through the second air inlet hole.
In some embodiments of the present invention, the number of the second air inlets is multiple, and each of the second air inlets is spaced along the circumferential direction of the volute.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:
fig. 1 schematically shows a structural view of a fan having a multi-wind path switching function according to a first embodiment of the present invention;
fig. 2 is a sectional view of the blower having the multi-duct switching function shown in fig. 1 (the first wind shielding mechanism and the second wind shielding mechanism are not shown);
fig. 3 schematically shows a structural diagram of a fan having a multi-wind path switching function according to a second embodiment of the present invention;
FIG. 4 is a cross-sectional view of the blower with multiple air path switching function shown in FIG. 3 in a first state;
FIG. 5 is a cross-sectional view of the blower with multiple air path switching function shown in FIG. 3 in a second state;
FIG. 6 is a cross-sectional view of the blower with multiple air path switching function shown in FIG. 3 in a third state;
fig. 7 is a schematic structural view showing a fan with a multi-wind path switching function according to a third embodiment of the present invention in a first state;
FIG. 8 is an exploded view of the blower with multiple air paths switching function shown in FIG. 7;
FIG. 9 is a schematic structural diagram of another view angle of the blower with multi-wind path switching function shown in FIG. 7;
FIG. 10 is an exploded view of the blower with the multi-duct switching function shown in FIG. 9;
fig. 11 is a schematic structural view showing a fan with a multi-wind path switching function according to a third embodiment of the present invention in a second state;
FIG. 12 is an exploded view of the blower with multiple air paths switching function shown in FIG. 11;
FIG. 13 is a schematic view of another view angle of the blower with multi-wind path switching function shown in FIG. 11;
FIG. 14 is an exploded view of the blower with multiple air paths switching function shown in FIG. 13
Fig. 15 is a schematic structural view showing a fan with a multi-wind path switching function according to a third embodiment of the present invention in a third state;
FIG. 16 is an exploded view of the blower with multiple air path switching function shown in FIG. 15;
FIG. 17 is a schematic view of another view angle of the blower with multi-wind path switching function shown in FIG. 15;
fig. 18 is an exploded schematic view of the blower with the multiple air path switching function shown in fig. 17.
The reference numbers are as follows:
100 is a fan
10 is an impeller;
20 is a volute;
21 is an air outlet, 22 is a first air inlet, and 23 is a first outer surface; 24 is a second air inlet, and 25 is a second outer surface;
30 is a shell;
31 is an air outlet, 32 is a first air inlet, and 33 is a second air inlet;
40 is a first baffle.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 to fig. 2, according to an embodiment of the present invention, a fan 100 with a multi-air-path switching function is provided, where the fan 100 with the multi-air-path switching function includes a volute 20, an impeller 10, a first wind shielding mechanism and a second wind shielding mechanism, an air outlet 21, a first air inlet 22 and a second air inlet 24 are provided on a housing, the air outlet 21 is disposed on a circumferential side wall of the volute 20, the first air inlet 22 and the second air inlet 24 are respectively disposed on two opposite axial side walls of the volute 20, the impeller 10 is rotatably disposed in the volute 20, the first wind shielding mechanism is disposed corresponding to the first air inlet 22 and is used for opening or closing the first air inlet 22, and the second wind shielding mechanism is disposed corresponding to the second air inlet 24 and is used for opening or closing the second air inlet 24.
Specifically, the impeller 10 is disposed inside the volute 20 and can rotate relative to the volute 20, two opposite sidewalls of the volute 20 are respectively opened with a first air inlet 22 and a second air inlet 24, a first wind shielding mechanism is engaged with the first air inlet 22 and is used for controlling the opening or closing of the first air inlet 22, a second wind shielding mechanism is engaged with the second air inlet 24 and is used for controlling the opening or closing of the second air inlet 24, and the air outlet 21 is disposed on a circumferential sidewall of the volute 20, wherein the first air inlet 22, the inside of the volute 20, and the air outlet 21 constitute a first air path of the fan 100, the second air inlet 24, the inside of the volute 20, and the air outlet 21 constitute a second air path of the fan 100, and when the first air path needs to be used, the first wind shielding mechanism is opened, the second wind shielding mechanism is closed, and air flows through a path of the first air inlet 22 → the inside of the volute 20 → the air, when the second air passage needs to be used, the second wind blocking mechanism is opened, the first wind blocking mechanism is closed, and air flows through the path of the second air inlet 24 → the inside of the scroll 20 → the air outlet 21. Two air paths are arranged in the fan 100, so that the problem that the number of the fans 100 is increased due to the increase of the air paths is solved, the size is reduced, the cost is reduced, in addition, the two air paths are switched by the control of the wind shielding mechanism, and the quick switching of the air paths is realized.
It should be understood that, the impeller 10 is an axial air inlet and radial outer air outlet structure, the axis of the impeller 10 faces to two end portions of the scroll casing 20, the first air inlet 22 and the second air inlet 24 are respectively opened at two end portions of the scroll casing 20, the air outlet 21 is located on the circumferential side wall of the scroll casing 20 and is arranged corresponding to the radial outer side of the impeller 10, and when the first air inlet 22 or the second air inlet 24 is opened, the impeller 10 rotates to enable air to enter the scroll casing 20 through the first air inlet 22 or the second air inlet 24 and then flow out through the air outlet 21.
It should be pointed out that fan 100 still includes first motor, first motor setting is in the inside of spiral case 20 and is connected with the transmission of impeller 10, first motor rotates and drives impeller 10 and rotate, thereby realize the air supply operation, the small and exquisite installation of being convenient for of structure of first motor is arranged, and simultaneously, the drive of first motor is stable high-efficient, can effectively guarantee the operation of impeller 10 stability efficient, in addition, set up first motor in spiral case 20, the air that gets into in the spiral case 20 can dispel the heat to the motor, thereby the life of first motor has been guaranteed.
It is further understood that the blower 100 with multiple air paths switching function further includes a housing 30, the volute 20 is rotatably disposed in the housing 30, the housing 30 is provided with a first air inlet hole 32, a second air inlet hole 33 and a plurality of air outlet holes 31, the first air inlet hole 32 is disposed corresponding to the first air inlet 22, the first air blocking mechanism is configured to control the first air inlet 22 to be connected to or disconnected from the outside through the first air inlet hole 32, the second air inlet hole 33 is disposed corresponding to the second air inlet 24, the second air blocking mechanism is configured to control the second air inlet 24 to be connected to or disconnected from the outside through the second air inlet hole 33, the air outlet holes 31 are disposed at intervals along the circumferential direction of the volute 20, and the volute 20 rotates relative to the housing 30, so that the air outlet 24 can be connected to the outside through any one of the air outlet holes 31. Specifically, the scroll casing 20 is disposed inside the housing 30, the first air inlet hole 32 and the first air inlet 22 are located on the same side, the first wind shielding mechanism controls the first air inlet 22 to be connected or disconnected with the outside through the first air inlet hole 32, the second air inlet hole 33 and the second air inlet 24 are located on the same side, the second wind shielding mechanism controls the second air inlet 24 to be connected or disconnected with the outside through the second air inlet hole 33, the air outlet holes 31 are circumferentially spaced along the housing 30, the scroll casing 20 rotates relative to the housing 30, and the air outlet 21 of the scroll casing 20 can be disposed corresponding to any one of the air outlet holes 31. The first wind shielding mechanism or the second wind shielding mechanism is connected or disconnected, so that the switching of the air inlet direction is realized, the volute casing 20 rotates relative to the shell 30, the air outlet 21 is correspondingly arranged with different air outlet holes 31, so that the switching of the air outlet direction is realized, the number of air paths of the fan 100 is further increased by arranging the shell 30, and the application range of the fan 100 is further increased.
It should be noted that the fan 100 further includes a second motor, the second motor is disposed outside the housing 30, a rotating shaft of the second motor passes through the housing 30 and is connected to the volute 20, the second motor rotates to drive the volute 20 to rotate relative to the housing 30, and the air outlet 21 of the volute 20 is disposed corresponding to the different air outlet 31 of the housing 30. In addition, the second motor is a stepping motor, the control of the stepping motor is accurate, and the rotation angle of the volute 20 can be accurately controlled, so that the accurate correspondence between the air outlet 21 and the air outlet hole 31 is ensured, and the air outlet effect is further ensured.
In some embodiments, as shown in fig. 3, the first wind shielding mechanism includes a first baffle 40, the first baffle 40 is disposed on the first air inlet hole 32 and is adapted to the first air inlet hole 32, and the first baffle 40 can rotate relative to the first air inlet hole 32 to open or close the first air inlet hole 32. Specifically, the first air inlet hole 32 is a first circular hole, the first baffle 40 is a first circular plate adapted to the shape and size of the first circular hole, when the first air inlet 22 does not need to be communicated with the outside through the first air inlet hole 32, the first baffle 40 shields the first air inlet hole 32, so that the first air inlet hole 32 is sealed, and when the first air inlet 22 needs to be communicated with the outside through the first air inlet hole 32, the first baffle 40 rotates relative to the first air inlet hole 32, so that the first baffle 40 does not shield at least part of the first air inlet hole 32, so as to open the first air inlet hole 32. The first baffle 40 is disposed in the first air inlet hole 32, and has a good control effect on connection or disconnection of the first air inlet 22, and a simple structure, thereby effectively reducing the manufacturing cost of the fan 100.
It should be noted that, the first sealing member is disposed on the outer edge of the first baffle 40, and when the first baffle 40 is closed relative to the first air inlet hole 32, the first sealing member is clamped between the first baffle 40 and the first air inlet hole 32, so as to further improve the sealing effect after the first air inlet hole 32 is closed.
Further, the first wind shielding mechanism includes a first driving member (not shown) which is in transmission connection with the first baffle 40. Specifically, the first driving member is in transmission connection with the first baffle 40, and the first baffle 40 is controlled by controlling the first driving member, so that the first air inlet hole 32 and the first air inlet 22 are quickly opened and closed, and the air path of the fan 100 is quickly switched.
It should be noted that the first wind shielding mechanism further includes a first rotating shaft, the first rotating shaft is fixedly connected to the first baffle 40 and passes through the center of the first baffle 40, two ends of the first rotating shaft are respectively rotatably matched with the inner wall of the first wind inlet hole 32, the first driving member is in transmission connection with the first rotating shaft, the first driving member drives the first rotating shaft to control the first baffle 40, and controls the wind inlet amount entering the scroll casing 20 through the first wind inlet hole 32 by controlling the rotation angle of the first baffle 40 relative to the first wind inlet hole 32.
In addition, the first driving member is a stepping motor or a servo motor, and in the present invention, the first driving member is a stepping motor, which is precisely controlled and can accurately control the rotation angle of the first baffle 40, thereby precisely controlling the intake air amount entering the scroll casing 20 through the first air inlet hole 32.
Further, the second air blocking mechanism includes a second blocking plate (not shown), the second blocking plate is disposed on the second air inlet hole 33 and is matched with the second air inlet hole 33, and the second blocking plate can rotate relative to the second air inlet hole 33 to open or close the second air inlet hole 33. Specifically, the second air inlet hole 33 is a second circular hole, the second baffle plate is a second circular plate adapted to the shape and size of the second circular hole, when the second air inlet 24 does not need to be communicated with the outside through the second air inlet hole 33, the second baffle plate shields the second air inlet hole 33, so that the second air inlet hole 33 is sealed, and when the second air inlet 24 needs to be communicated with the outside through the second air inlet hole 33, the second baffle plate rotates relative to the second air inlet hole 33, so that the second baffle plate does not shield at least part of the second air inlet hole 33, so as to open the second air inlet hole 33. The second baffle is arranged in the second air inlet hole 33, and has good control effect on connection or disconnection of the second air inlet 24, simple structure and effectively reduced manufacturing cost of the fan 100.
It should be noted that, a second sealing member is disposed on the outer edge of the second baffle plate, and when the second baffle plate is closed relative to the second air inlet hole 33, the second sealing member is clamped between the second baffle plate and the second air inlet hole 33, so as to further improve the sealing effect after the second air inlet hole 33 is closed.
Further, the second air blocking mechanism comprises a second driving member (not shown), and the second driving member is in transmission connection with the second air blocking plate. Specifically, the second driving member is in transmission connection with the second baffle, and the second baffle is controlled by controlling the second driving member, so that the second air inlet hole 33 and the second air inlet 24 are quickly opened and closed, and the air path of the fan 100 is quickly switched.
It should be noted that the second wind shielding mechanism further includes a second rotating shaft, the second rotating shaft is fixedly connected to the second baffle and passes through the center of the second baffle, two ends of the second rotating shaft are respectively matched with the inner wall of the second wind inlet hole 33 in a rotatable manner, the second driving member is in transmission connection with the second rotating shaft, the second driving member drives the second rotating shaft to control the second baffle, and the wind inlet amount entering the scroll casing 20 through the second wind inlet hole 33 is controlled by controlling the rotation angle of the second baffle relative to the second wind inlet hole 33.
In addition, the second driving member is a stepping motor or a servo motor, and in the present invention, the second driving member is a stepping motor, which is controlled precisely, and can accurately control the rotation angle of the second baffle (not shown), thereby realizing precise control of the intake air amount entering the scroll casing 20 through the second air inlet hole 33.
As shown in fig. 3 to 6, the number of the air outlets 31 of the housing 30 is three, the three air outlets 31 are arranged at equal intervals along the circumferential direction of the scroll casing 20, that is, an included angle between two adjacent air outlets 31 is 120 °, the first driving member drives the first baffle 40 to control the connection or disconnection between the first air inlet 22 and the outside through the first air inlet hole 32, the second driving member drives the second baffle to control the connection or disconnection between the second air inlet 24 and the outside through the second air inlet hole 33, and the scroll casing 20 rotates to enable the air outlet 21 to correspond to any one of the three air outlets 31 (the other air outlets 31 not corresponding to the air outlet 21 are blocked and sealed by the circumferential side wall of the scroll casing 20). By controlling the on-off of the first air inlet hole 32 and the second air inlet hole 33 and controlling the air outlet 21 to be arranged corresponding to different air outlet holes 31, the switching of multiple air paths of the fan 100 is realized, the number of the control air paths of the fan 100 is further increased, the structure is simplified, the size is reduced, and the quick switching of the air paths can be realized.
In some embodiments, as shown in fig. 7, 8, 11, 12, 15 and 16, the first wind shielding mechanism is a first outer surface 23 of the scroll 20 facing the first wind inlet hole 32, when the scroll 20 rotates relative to the housing 30 and the first wind inlet 22 is staggered relative to the first wind inlet hole 32, the first outer surface 23 closes the first wind inlet hole 32, and when the scroll 20 rotates relative to the housing 30 and at least a portion of the first wind inlet 22 corresponds to at least a portion of the first wind inlet hole 32, the first wind inlet 22 communicates with the outside through the first wind inlet hole 32. Specifically, the first air inlet 22 is disposed on the first outer surface 23, when the scroll casing 20 rotates relative to the housing 30 and the first air inlet hole 32 and the first air inlet 22 are in a completely staggered state, the first outer surface 23 seals the first air inlet hole 32, at this time, the first air inlet 22 is in a disconnected state with the outside through the first air inlet hole 32, when the scroll casing 20 rotates relative to the housing 30 and the first air inlet hole 32 and the first air inlet hole 22 are in a partially staggered state, the first air inlet 22 is in a communicated state with the outside through the first air inlet hole 32, and at this time, air can enter the scroll casing 20 through the first air inlet hole 32 and the first air inlet 22. The rotation of the scroll casing 20 relative to the housing 30 not only realizes the switching of the position of the air outlet 21, but also realizes the control of whether the first air inlet 22 is communicated with the outside through the first air inlet hole 32, thereby realizing the fast switching of the air path.
It should be understood that when the first air inlet openings 32 partially overlap the first air inlet openings 22, the first air inlet openings 32 are in a partially open state, and when the first air inlet openings 32 fully correspond to the first air inlet openings 22, the first air inlet openings 32 are in a fully open state. The control of the amount of air entering through the first air inlet openings 32 is achieved by controlling the offset position of the first air inlet openings 32 relative to the first air inlet openings 22.
Further, the number of the first air inlets 22 is plural, and each first air inlet 22 is arranged at intervals along the circumferential direction of the scroll casing 20. Specifically, the plurality of first air inlets 22 are arranged at intervals along the circumferential direction of the volute casing 20, when the volute casing 20 rotates relative to the housing 30, the air outlet 21 of the volute casing 20 is switched between the plurality of air outlet holes 31, and when the air outlet 21 corresponds to the required air outlet hole 31, the first air inlet hole 32 of the housing 30 corresponds to one of the first air inlets 22, so that when the position of the air outlet 21 is switched, the first air inlet 22 is effectively communicated with the outside through the first air inlet hole 32, and the smoothness of the air path is ensured.
Further, the second wind shielding mechanism is a second outer surface 25 of the scroll 20 facing the second air inlet hole 33, when the scroll 20 rotates relative to the housing 30 and the second air inlet 24 is staggered relative to the second air inlet hole 33, the second outer surface 25 seals the second air inlet hole 33, and when the scroll 20 rotates relative to the housing 30 and at least a portion of the second air inlet 24 is disposed corresponding to at least a portion of the second air inlet hole 33, the second air inlet 24 communicates with the outside through the second air inlet hole 33. Specifically, the second air inlet 24 is formed in the second outer surface 25, when the scroll casing 20 rotates relative to the housing 30 and the second air inlet hole 33 and the second air inlet 24 are in a completely staggered state, the second outer surface 25 seals the second air inlet hole 33, at this time, the second air inlet 24 is in a disconnected state with the outside through the second air inlet hole 33, when the scroll casing 20 rotates relative to the housing 30 and the second air inlet hole 33 and the second air inlet 24 are in a partially staggered state, the second air inlet 24 is in a communicated state with the outside through the second air inlet hole 33, and at this time, air can enter the scroll casing 20 through the second air inlet hole 33 and the second air inlet 24. The rotation of the scroll casing 20 relative to the housing 30 not only realizes the switching of the position of the air outlet 21, but also realizes the control of whether the second air inlet 24 is communicated with the outside through the second air inlet hole 33, thereby realizing the fast switching of the air path.
It should be understood that when the second air inlet holes 33 are partially overlapped with the second air inlets 24, the second air inlet holes 33 are in a partially opened state, and when the second air inlet holes 33 are completely overlapped with the second air inlets 24, the second air inlet holes 33 are in a completely opened state. The control of the amount of air entering through the second air inlet openings 33 is achieved by controlling the offset position of the second air inlet openings 33 with respect to the second air inlet openings 24.
In addition, the first air inlet 22 and the second air inlet 24 are arranged in a staggered manner in the circumferential direction of the volute 20, when the first air inlet 22 is communicated with the outside through the first air inlet hole 32, the second air inlet 24 is disconnected from the outside through the second air inlet hole 33, otherwise, when the second air inlet 24 is communicated with the outside through the second air inlet hole 33, the first air inlet 22 is disconnected from the outside through the first air inlet hole 32, the air inlet direction of the fan 100 is switched by rotating the volute 20, and the air path of the fan 100 is further switched quickly.
Further, the number of the second air inlets 24 is plural, and each second air inlet 24 is arranged at intervals along the circumferential direction of the volute 20. Specifically, the plurality of second air inlets 24 are arranged at intervals along the circumferential direction of the volute casing 20, when the volute casing 20 rotates relative to the housing 30, the air outlet 21 of the volute casing 20 is switched between the plurality of air outlet holes 31, and when the air outlet 21 corresponds to the required air outlet hole 31, the second air inlet hole 33 of the housing 30 corresponds to one of the second air inlets 24, so that when the position of the air outlet 21 is switched, the second air inlet 24 is effectively communicated with the outside through the second air inlet hole 33, and the air path is ensured.
It should be noted that, when the number of the first air inlets 22 and the number of the second air inlets 24 are multiple, each air inlet and each second air inlet 24 are arranged in a staggered manner along the circumferential direction of the scroll casing 20, that is, when any first air inlet 22 is communicated with the outside through the first air inlet hole 32, each second air inlet 24 is disconnected from the outside through the second air inlet hole 33, on the contrary, when any second air inlet 24 is communicated with the outside through the second air inlet hole 33, each first air inlet 22 is disconnected from the outside through the first air inlet hole 32, switching of the air inlet direction of the fan 100 is realized by rotating the scroll casing 20, and further, quick switching of the air path of the fan 100 is realized.
As shown in fig. 7 to 18, the number of the air outlet holes 31 of the housing 30 is three, three air outlet holes 31 are arranged at equal intervals along the circumferential direction of the scroll casing 20, that is, an included angle between two adjacent air outlet holes 31 is 120 °, the first air inlet hole 32 is arranged corresponding to the second air inlet hole 33, the number of the first air inlet 22 is one, the number of the second air inlet 24 is two, one first air inlet 22 and two second air inlets 24 are staggered along the circumferential direction of the scroll casing 20, and an included angle between two adjacent second air inlets 24 is 120 °, an included angle between a projection of the first air inlet 22 on the second outer surface 25 and any one of the second air inlets 24 is 120 °, when the first air inlet 22 corresponds to the first air inlet hole 32, the air outlet 21 is arranged corresponding to the first air outlet hole 31, and when the first second air inlet 24 corresponds to the second air inlet hole 33, the air outlet 21 is arranged corresponding to the second air outlet hole 31, when the second air inlet 24 corresponds to the second air inlet hole 33, the air outlet 21 corresponds to the third air outlet hole 31. Through the rotation of the volute 20, the air outlet 21 can correspond to any one of the three air outlets 31 (the other air outlets 31 which do not correspond to the air outlet 21 are shielded and sealed by the circumferential side wall of the volute 20), the first air inlet 22 is communicated with the outside through the first air inlet hole 32 or communicated with the outside through the second air inlet hole 33 through any second air inlet 24, so that the switching of multiple air paths of the fan 100 is realized, the number of the air paths controlled by the fan 100 is further increased, the structure is simplified, the size is reduced, and the quick switching of the air paths can be realized.
In addition, please refer to the prior art for other structures of the blower, which are not described herein.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A fan with a multi-wind path switching function, characterized in that the fan with a multi-wind path switching function comprises:
the volute comprises a volute body, wherein an air outlet, a first air inlet and a second air inlet are formed in the shell body, the air outlet is formed in the circumferential side wall of the volute body, and the first air inlet and the second air inlet are respectively formed in two opposite axial side walls of the volute body;
an impeller rotatably disposed within the volute;
the first wind shielding mechanism is arranged corresponding to the first air inlet and is used for opening or closing the first air inlet;
and the second wind shielding mechanism is arranged corresponding to the second air inlet and is used for opening or closing the second air inlet.
2. The blower with multiple air paths switching function according to claim 1, further comprising a housing, wherein the volute is rotatably disposed in the housing, and the housing is provided with:
the first air inlet hole can be arranged corresponding to the first air inlet, and the first wind shielding mechanism is used for controlling the first air inlet to be communicated or disconnected with the outside through the first air inlet hole;
the second air inlet hole can be arranged corresponding to the second air inlet, and the second air blocking mechanism is used for controlling the second air inlet to be communicated with the outside or disconnected from the outside through the second air inlet hole;
the volute casing is arranged on the shell, and the air outlet is communicated with the outside through any air outlet.
3. The fan with the function of switching the multiple air paths according to claim 2, wherein the first wind shielding mechanism comprises a first baffle plate, the first baffle plate is disposed at the first air inlet hole and is matched with the first air inlet hole, and the first baffle plate can rotate relative to the first air inlet hole to open or close the first air inlet hole.
4. The blower with multiple air paths switching function according to claim 3, wherein the first wind shielding mechanism comprises a first driving member, and the first driving member is in transmission connection with the first baffle.
5. The fan with multiple air paths switching function according to claim 2, wherein the second air blocking mechanism comprises a second blocking plate, the second blocking plate is disposed on the second air inlet hole and is matched with the second air inlet hole, and the second blocking plate can rotate relative to the second air inlet hole to open or close the second air inlet hole.
6. The blower with multiple air path switching function according to claim 5, wherein the second air blocking mechanism includes a second driving member, and the second driving member is in transmission connection with the second baffle.
7. The blower with multiple air paths switching function according to claim 2, wherein the first wind shielding mechanism is a first outer surface of the scroll casing facing the first air inlet hole, when the scroll casing rotates relative to the housing and the first air inlet is staggered relative to the first air inlet hole, the first outer surface closes the first air inlet hole, and when the scroll casing rotates relative to the housing and at least a portion of the first air inlet is disposed corresponding to at least a portion of the first air inlet hole, the first air inlet communicates with the outside through the first air inlet hole.
8. The blower with the multi-air-path switching function according to claim 7, wherein the number of the first air inlets is plural, and each of the first air inlets is arranged at intervals along a circumferential direction of the volute.
9. The blower with multiple air paths switching function according to claim 7, wherein the second wind shielding mechanism is a second outer surface of the scroll casing facing the second air inlet hole, when the scroll casing rotates relative to the housing and the second air inlet is staggered relative to the second air inlet hole, the second outer surface closes the second air inlet hole, and when the scroll casing rotates relative to the housing and at least a portion of the second air inlet is disposed corresponding to at least a portion of the second air inlet hole, the second air inlet is communicated with the outside through the second air inlet hole.
10. The blower with multiple air path switching function according to claim 9, wherein the number of the second air inlets is multiple, and each of the second air inlets is arranged at intervals along a circumferential direction of the volute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010686720.3A CN111648981A (en) | 2020-07-16 | 2020-07-16 | Fan with multi-wind-path switching function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010686720.3A CN111648981A (en) | 2020-07-16 | 2020-07-16 | Fan with multi-wind-path switching function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111648981A true CN111648981A (en) | 2020-09-11 |
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ID=72346372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010686720.3A Pending CN111648981A (en) | 2020-07-16 | 2020-07-16 | Fan with multi-wind-path switching function |
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| Country | Link |
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| CN (1) | CN111648981A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114187820A (en) * | 2021-11-08 | 2022-03-15 | 深圳市高展光电有限公司 | Display screen dustproof construction and dustproof display screen |
| CN114458618A (en) * | 2022-03-22 | 2022-05-10 | 西安交通大学 | Reversible multi-wing centrifugal fan impeller device with forward and backward adjustment and fan |
| WO2024015994A1 (en) * | 2022-07-15 | 2024-01-18 | Greenheck Fan Corporation | Fan assembly |
-
2020
- 2020-07-16 CN CN202010686720.3A patent/CN111648981A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114187820A (en) * | 2021-11-08 | 2022-03-15 | 深圳市高展光电有限公司 | Display screen dustproof construction and dustproof display screen |
| CN114187820B (en) * | 2021-11-08 | 2023-10-13 | 深圳市高展光电有限公司 | Dustproof structure of display screen and dustproof display screen |
| CN114458618A (en) * | 2022-03-22 | 2022-05-10 | 西安交通大学 | Reversible multi-wing centrifugal fan impeller device with forward and backward adjustment and fan |
| WO2024015994A1 (en) * | 2022-07-15 | 2024-01-18 | Greenheck Fan Corporation | Fan assembly |
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