CN114087237B - Bladeless fan - Google Patents
Bladeless fan Download PDFInfo
- Publication number
- CN114087237B CN114087237B CN202111558112.5A CN202111558112A CN114087237B CN 114087237 B CN114087237 B CN 114087237B CN 202111558112 A CN202111558112 A CN 202111558112A CN 114087237 B CN114087237 B CN 114087237B
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- China
- Prior art keywords
- air
- duct
- base
- port
- jet
- Prior art date
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- 238000007664 blowing Methods 0.000 claims abstract description 9
- 238000004891 communication Methods 0.000 claims description 54
- 238000007789 sealing Methods 0.000 claims description 8
- 239000000243 solution Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
- F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
- F04F5/46—Arrangements of nozzles
Abstract
The invention discloses a bladeless fan, and relates to the technical field of household appliances. The bladeless fan comprises a base, a fan and an outer air duct shell. Wherein, an air supply duct is formed in the base, and the air supply duct is provided with an air inlet and an air supply outlet; the fan is arranged in the air supply duct; the outer air duct shell is movably arranged on the base, a front-back through confluence opening is formed in the outer air duct shell, a jet flow air duct communicated with the air supply opening is formed in the outer air duct shell, the jet flow air duct is provided with a jet opening, and the jet flow air duct is used for blowing air forward from the jet opening, so that external air is converged towards the front side of the confluence opening; wherein, the height of outer wind channel shell relative to the base is adjustable. The technical scheme of the invention can solve the problem that the air supply height of the bladeless fan in the prior art cannot be adjusted.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a bladeless fan.
Background
The bladeless fan has the advantages of novel shape, safe use, stable and comfortable wind feeling and the like, is favored by consumers because the bladeless fan can generate natural and continuous cool wind, has no blades and is not easy to accumulate ash.
The existing bladeless fan generally conceals the fan in the machine body, air flows enter the air channel from the side of the bottom, the air flows enter the air channel through the fan in an accelerating mode, finally the air flows out through the upper long and thin air outlet, the air flows in the air channel drive the surrounding air to form injection, and air supply in different ranges in the horizontal direction is generally realized through left and right swing of the machine body of the whole machine or the vertical air channel.
In fact, the blowing heights required by users in standing, sitting and lying are different for people with different heights, such as adults and children, and the bladeless fan in the prior art can only realize the blowing in different ranges in the horizontal direction, but cannot realize the blowing in different height ranges.
Disclosure of Invention
The invention mainly aims to provide a bladeless fan, which aims to solve the problem that the bladeless fan in the prior art cannot adjust the air supply height.
In order to achieve the above object, the bladeless fan according to the present invention includes:
the base is internally provided with an air supply duct, and the air supply duct is provided with an air inlet and an air supply outlet;
the fan is arranged in the air supply duct; and
the outer air duct shell is movably arranged on the base, a front-back through confluence opening is formed in the outer air duct shell, a jet flow air duct communicated with the air supply opening is formed in the outer air duct shell, the jet flow air duct is provided with a jet opening, and the jet flow air duct is used for blowing air forward from the jet opening, so that external air is converged towards the front side of the confluence opening; wherein, the height of outer wind channel shell relative to the base is adjustable.
In an embodiment, the outer air duct shell is provided with at least two communicating ports with different heights, and the air supply port is alternatively communicated with the communicating ports.
In an embodiment, the outer air duct shell comprises a vertical portion and a horizontal portion connected with the vertical portion, accommodating grooves are formed in two sides of the base, the vertical portion is vertically movably arranged on the outer side of the accommodating grooves, and the horizontal portion is located above the base.
In an embodiment, the vertical portion includes an outer side surface and an inner side surface that are connected to each other, the outer side surface is in an arc arrangement, the inner side surface is in a plane arrangement, and the jet port is vertically arranged on the front side of the outer side surface.
In an embodiment, the air inlet is disposed on a side of the base, the air inlet includes a side air inlet disposed on the same side as the vertical portion and a rear air inlet facing away from the jet port, and the vertical portion is movable to shield the side air inlet.
In an embodiment, the air supply port is provided with a clamping protrusion around, and when the communication port is communicated with the air supply port, the clamping protrusion is clamped in the communication port.
In one embodiment, the jet port is provided with guide plates, and the guide plates are arranged at intervals in the vertical direction.
In an embodiment, the outer air duct housing includes a first air duct housing and a second air duct housing, a horizontal portion of the first air duct housing being detachably connected to a horizontal portion of the second air duct housing.
In an embodiment, a splitter is disposed at the top of the air supply duct, and the splitter makes air in the air supply duct flow to the air supply openings on two sides of the base respectively.
In an embodiment, the air supply device further comprises a baffle plate, wherein the baffle plate is used for sealing the communication port except the communication port with the air supply port.
According to the technical scheme, the outer air duct shell with the jet flow air duct and the jet flow opening is designed, the outer air duct shell forms the converging opening, when air in the jet flow air duct is ejected from the jet flow opening, air injection is formed at the converging opening, the air output is increased, the outer air duct shell is movably arranged on the base, the air blower is arranged in the air supply air duct in the base and supplies air for the jet flow air duct, the height of the outer air duct shell on the base is adjustable, and finally the bladeless fan can supply air in different height ranges.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a bladeless fan according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an embodiment of a bladeless fan according to the present invention, wherein the outer air duct housing is raised;
FIG. 3 is a side view of the bladeless fan of FIG. 1;
FIG. 4 is a side view of the bladeless fan of FIG. 2;
FIG. 5 is a rear view of the bladeless fan of FIG. 1;
FIG. 6 is a rear view of the bladeless fan of FIG. 2;
FIG. 7 is a cross-sectional view of the bladeless fan of FIG. 1;
FIG. 8 is a cross-sectional view of the bladeless fan of FIG. 2;
FIG. 9 is a schematic view of a housing duct according to an embodiment of the bladeless fan of the present invention;
FIG. 10 is a cross-sectional view of an outer casing duct in an embodiment of a bladeless fan according to the present invention;
FIG. 11 is a partial cross-sectional view at A in FIG. 10;
FIG. 12 is a schematic view of a base structure of a bladeless fan according to an embodiment of the present invention;
fig. 13 is a cross-sectional view of the bladeless fan of fig. 3.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a bladeless fan, which is provided with an outer air duct shell capable of adjusting the height of the bladeless fan relative to a base, so as to realize the adjustment of the height of air supply by the bladeless fan.
Referring to fig. 1 to 8, in an embodiment of the present invention, the bladeless fan 10 includes a base 100, a fan 120, and an outer duct case 200. Wherein, an air supply duct 110 is formed in the base 100, and the air supply duct 110 has an air inlet 111 and an air supply outlet 112; the fan 120 is disposed in the air supply duct 110; the outer air duct case 200 is movably mounted on the base 100, the outer air duct case 200 is formed with a front-back through confluence port 220, a jet air duct 210 communicating with the air supply port 112 is formed in the outer air duct case 200, the jet air duct 210 is provided with a jet port 211, the jet air duct 210 is used for blowing air in the air supply duct 110 out of the jet port 211, so that negative pressure is formed at the confluence port 220, and external air is collected towards the front side of the confluence port 220; wherein the height of the outer air duct case 200 with respect to the base 100 is adjustable.
When the bladeless fan 10 is operated, the fan 120 is started, and under the action of the fan 120, the air outside the bladeless fan 10 is sucked into the air supply duct 110 through the air inlet 111 and then discharged through the air outlet 112. When the air discharged from the supply air duct 110 enters the jet air duct 210 communicating with the supply air port 112, the flow area suddenly decreases when passing through the jet port 211, and the flow velocity increases due to the decrease in the cross section when fluid continuously flows, as is known from the continuity equation derived from the law of conservation of mass, so that the flow velocity of the air passing through the jet port 211 increases and is emitted from the jet port 211. Since the velocity of the air flowing out from the jet port 211 is high, the pressure of the air flowing out from the jet port 211 is low, the velocity of the air flowing out from the jet port 211 is high, the pressure of the air flowing out from the jet port is low, and the velocity of the air flowing out from the jet port 211 is low, as known from the Bernoulli's theorem. Therefore, when air flows out from the jet port 211, negative pressure is formed at the converging port 220, that is, the air pressure around the converging port 220 is higher than the air pressure at the converging port 220, and the air around the outer air duct case 200 is converged toward the air outlet direction of the jet port 211, so that flowing air is formed at the converging port 220, and the air outlet amount of the bladeless fan 10 is increased.
The outer air duct case 200 is movably mounted on the base 100, and the height of the outer air duct case 200 relative to the base 100 is adjustable. For example, a chute is disposed on the outer air duct housing 200 and is in communication with the jet air duct 210, and sliding rails are disposed around the air supply port 112, and when the sliding rails are installed in the chute, the jet air duct 210 is in communication with the air supply port 112. Meanwhile, the housing air duct can also move up and down relative to the base 100 through the sliding groove and the sliding rail, the air supply port 112 is fixed on the base 100, and when the air is required to be supplied to a high place, the sliding groove moves upwards relative to the sliding rail, and the housing air duct moves upwards relative to the base 100, so that the jet port 211 reaches the position of the required air outlet. Similarly, when air needs to be supplied to the lower part, the sliding groove moves downwards relative to the sliding rail, that is, the housing air duct moves downwards relative to the base 100, so that the jet port 211 reaches the position of the required air outlet.
In the above embodiment, the outer air duct housing 200 moves up and down relative to the base 100 through a sliding groove and a sliding rail, and when the sliding groove moves relative to the sliding rail around the air supply port 112, the sliding rail needs to be guaranteed to be in sealing connection with the sliding groove, so as to prevent the air supply port 112 from leaking air. Meanwhile, when the sliding groove moves relative to the sliding rails around the air supply port 112, the connection position of the air supply port 112 in the sliding groove can be changed along with the movement of the outer air duct shell 200, so that the sealing state of the area, which is not communicated with the air supply port 112, in the sliding groove needs to be adjusted at the same time, and the requirements on the precision and difficulty of production and assembly processing are high.
The outer air duct case 200 may be provided in a telescopic manner, and the air outlet height of the bladeless fan 10 is changed by the form that the outer air duct case 200 is lengthened when extended and the outer air duct case 200 is shortened when contracted. However, this method of changing the length of the air duct may occur, as the jet port 211 is shortened, the wind speed may be stronger, the noise of the air jet may be higher, and the comfort of the air outlet may be reduced.
Referring to fig. 7 to 10, in this embodiment, the outer air duct housing 200 is provided with at least two communication ports 212 with different heights, the jet air duct 210 communicates with the air supply port 112 through the communication ports 212, and the heights of the outer air duct housing 200 relative to the base 100 are different when the communication ports 212 with different heights communicate with the air outlet. For example, two communication ports 212 are provided on the outer air duct case 200, the two communication ports 212 are vertically arranged up and down, the air supply port 112 is fixed on the base 100, when the air outlet height of the bladeless fan 10 needs to be adjusted to be higher, the communication ports 212 provided below are communicated with the air supply port 112, so that the height of the outer air duct case 200 relative to the base 100 is increased, and the jet port 211 reaches the position of the required air outlet. Similarly, when the air outlet height of the bladeless fan 10 needs to be adjusted down, the communication opening 212 provided above is communicated with the air supply opening 112, so that the height of the outer air duct housing 200 relative to the base 100 is reduced, and the jet opening 211 reaches the position of the air outlet. Compared with the connection mode of the sliding groove and the sliding rail, the connecting port 212 with at least two different heights is simpler, and the sealing position of the connecting port 212 does not need to be changed at any time along with the movement of the outer air duct shell 200. In contrast to the case where the outer duct case 200 is configured to be telescopic, the length of the jet port 211 in this embodiment is always kept unchanged, that is, the air outlet range is unchanged, and the air outlet height of the bladeless fan 10 is truly adjusted by moving the entire outer duct case 200.
Specifically, the outer air duct case 200 includes a vertical portion 230 and a horizontal portion 240 connected to the vertical portion 230, the two sides of the base 100 are provided with receiving grooves 130, the vertical portion 230 is located outside the receiving grooves 130, and the horizontal portion 240 is located above the base 100. The accommodating groove 130 may limit the vertical portion 230, and when the communication port 212 communicating with the air supply port 112 is adjusted and replaced, only the vertical portion 230 is required to be aligned with the accommodating groove 130, so that the vertical portion 230 may be vertically installed, and after the vertical portion 230 is installed with the base 100, the accommodating groove 130 may further limit the lateral movement of the outer air duct case 200 relative to the accommodating groove 130. The horizontal parts 240 are connected to the vertical parts 230 at both sides of the base 100, further improving the mounting stability of the outer duct case 200 on the base 100, and restricting the front and rear movement of the outer duct case 200 with respect to the receiving groove 130. When the bladeless fan 10 is in the idle state, the outer air duct housing 200 is minimized, so that space for placing the bladeless fan 10 can be saved, and the horizontal portion 240 of the outer air duct housing 200 can also be used as an object stage for placing other objects.
The horizontal portion 240 and the vertical portions 230 located at two sides of the base 100 form the confluence opening 220, after the outer air duct case 200 is adjusted to be high, air around the outer air duct case 200 is collected toward the confluence opening 220, and the air output of the bladeless fan 10 is increased. For example, the height of an adult is higher than that of a child, the required air outlet position is higher, the required air outlet amount is higher, and after the outer air duct shell 200 is adjusted to be higher, the higher air outlet position is met, and a large amount of air collected at the confluence port 220 meets the large air outlet amount. And child and adult get something wrong with each other, the air-out position that requires is lower, and required air-out volume is also less, will after outer wind channel shell 200 is adjusted down, has satisfied lower air-out position, simultaneously the confluence mouth 220 by base 100 withstands, can only collect the air of outer wind channel shell 200 both sides, and the air-out volume reduces, just the air of outer wind channel shell 200 both sides gathers and takes place the collision when together and mixes, and the wind speed reduces, and the air-out is soft, is fit for child and uses. When the communication port 212 above the outer air duct housing 200 is in communication with the air supply port 112, the main air flow direction in the jet air duct 210 is from top to bottom, which is opposite to the air flow direction in the air supply air duct 110, and when the air flows into the jet air duct 210 from the air supply air duct 110, the air direction is changed, the resistance is increased, the air flow rate is reduced, and the air outlet flow rate of the jet port 211 is also reduced, so that the air outlet is softer.
Referring to fig. 11, further, the vertical portion 230 includes an outer side 232 and an inner side 231 that are connected to each other, the outer side 232 is disposed in a circular arc, the inner side 231 is disposed in a plane, and the jet port 211 is vertically disposed on a front side of the outer side 232. The outer side 232 is arranged in a circular arc shape, so that the flow resistance of air flowing along the outer wall of the outer air duct shell 200 can be reduced, and meanwhile, the air flowing out of the outer air duct shell 200 can be guided, so that the air flowing out of the outer air duct shell 200 is converged to the confluence port 220 along the circular arc, and the air output of the bladeless fan 10 is increased. The inner side 231 is in a planar design, so that the connection and installation between the outer air duct housing 200 and the base 100 are facilitated. The jet port 211 is vertically disposed at the edge of the outer side 232, and is adjacent to the converging port 220, so that air just enters the converging port 220 when being ejected from the jet port 211, and negative pressure is formed at the converging port 220. Preferably, a support column 233 is connected between the outer side 232 and the inner side 231, so as to strengthen and stabilize the connection between the outer side 232 and the inner side 231, and prevent the outer side 232 and the inner side 231 from emitting and shaking when the air flow velocity in the jet air duct 210 is too high.
Referring to fig. 4, considering that the communication port 212 located above the outer air duct housing 200 is in communication with the air supply port 112, that is, when the height of the outer air duct housing 200 relative to the base 100 is low, the jet port 211 is close to the side surface of the base 100, and the air inlet 111 is located on the side surface of the base 100, if the air inlet 111 is located on one side of the jet port 211 in the air outlet direction, a backflow is formed between the air inlet 111 and the jet port 211, and the air ejected from the jet port 211 is sucked into the air supply duct 110 again by the air inlet 111, so that the air outlet effect of the jet port 211 is reduced. In view of this, in one embodiment, the air inlet 111 includes a side air inlet 111b disposed on the same side as the vertical portion 230 and a rear air inlet 111a facing away from the jet port 211. When the outer air duct case 200 is lifted, the side air inlet 111b and the rear air inlet 111a can be used as channels for communicating the air supply duct 110 with the outside air, and the air supply quantity of the air supply duct 110 is increased compared with the case where only one rear air inlet 111a is provided. When the outer air duct case 200 is lowered, the vertical portion 230 shields the side air inlet 111b, and the air supply duct 110 can only draw in air through the rear air inlet 111a, so that the air inlet amount is reduced, and the air outlet amount is also reduced, so that the air supply duct is more suitable for blowing by children with lower heights.
When the communication port 212 on the lower side of the outer air duct housing 200 is communicated with the air supply port 112, the main air flow direction in the jet air duct 210 is from bottom to top, and is the same as the air flow direction in the air supply port 211, and an upward inclined angle is formed when the air is emitted from the jet port 211, so that the air cannot be discharged horizontally, and the blowing experience of a user is reduced. Similarly, when the upper communication port 212 of the outer duct case 200 is in communication with the air supply port 112, the main air flow direction in the jet flow duct 210 is from top to bottom, opposite to the air flow direction in the air supply duct 110, and when the air is ejected from the jet flow port 211, a downward inclined angle is formed, so that the air cannot be discharged horizontally.
Referring to fig. 1, 10 and 11, in this embodiment, the jet ports 211 are further provided with a baffle 211a at intervals. The baffle 211a is horizontally disposed at the jet port 211, and when air passes through the jet port 211, the baffle 211a can change the flow direction of the air, so that the jet port 211 can discharge air horizontally. Further, the baffle 211a may be rotatably disposed at the jet port 211, and when the air outlet height of the bladeless fan 10 needs to be changed by a small amount, the baffle 211a may be rotated to adjust the air outlet direction of the jet port 211, so that the jet port 211 is up-air-out or down-air-out.
In addition to taking into account the effects of the different flow directions of air within the jet stack 210, the supply stack 110 itself may also have an effect on the air flow. Since the vertical portions 230 of the housing duct are disposed on two sides of the base 100, the two sides of the base 100 are required to be provided with corresponding air supply ports 112 to communicate with the jet duct 210, and the air in the air supply duct 110 is divided into two flows flowing to the air supply ports 112 on two sides from a first flow direction. When the air in the air supply duct 110 collides with the top of the air supply duct 110 when the air is divided into two flow directions, the flowing wind direction changes, vibration can be generated when the air collides, noise is generated, and meanwhile, the energy of flowing air is reduced, and the flow speed is reduced.
Referring to fig. 7, 8 and 13, in order to attenuate the impact caused by the collision, in an embodiment, a splitter 113 is disposed at the top of the air supply duct 110 and is opposite to the incoming flow direction of the air supply duct 110, the splitter 113 is disposed in a concave arc, and the splitter 113 separates the air supply duct 110 to be respectively communicated with the air supply ports 112 at two sides of the base 100. The splitter 113 comprises two baffle plates connected with each other, the two baffle plates are opposite to the incoming flow direction of the air supply duct 110, the joint of the baffle plates and the two baffle plates is in concave arc arrangement, air in the air supply duct 110 contacts the two baffle plate joints firstly and is divided into two paths to flow to the air supply port 112 along the baffle plates, and the joint of the baffle plates and the two baffle plates is in concave arc arrangement, so that vibration and energy loss caused by air collision can be weakened. Preferably, the flow dividing members 113 are symmetrically disposed with respect to the center of the air supply duct 110, so that the air in the air supply duct 110 flows uniformly to the air supply ports 112 at both sides of the base 100.
Referring to fig. 9 and 12, it should be noted that the communication port 212 is disposed on the inner side 231, the air supply port 112 is disposed in the accommodating groove 130 disposed on the same side as the vertical portion 230, and the communication between the communication port 212 and the air supply port 112 is required to ensure the sealing stability, and the outer air duct housing 200 is required to be movably mounted on the base 100, and there are many specific connection manners, including but not limited to connection of the buckle 241 and the magnetic connection. In an embodiment, the air supply port 112 is provided with a clamping protrusion 112a around, and when the communication port 212 is communicated with the air supply port 112, the clamping protrusion 112a is clamped in the communication port 212. Through the joint cooperation of the joint bulge 112a and the communication port 212, the sealing stable connection between the communication port 212 and the air supply outlet 112 is realized, the operation method of assembling and disassembling the joint bulge 112a and the communication port 212 is simple and convenient, the communication port 212 with different heights is conveniently replaced to be connected with the air supply outlet 112, and the adjustment of the air outlet height of the bladeless fan 10 is realized. Meanwhile, the outer air duct case 200 may be fixed on the base 100 only by means of the engagement between the engaging protrusion 112a and the communication port 212, without other supporting connection, so that the production, processing, and operation of the bladeless fan 10 are simpler.
On the basis of the above embodiment, in one embodiment, the bladeless fan 10 is further provided with a baffle 300, and the baffle 300 is used for sealing the communication port 212 except for the communication with the air supply port 112. Because the outer air duct case 200 is provided with at least two communication ports 212, when the air outlet height is adjusted to enable the communication ports 212 with different heights to communicate with the air outlet 112, the communication ports 212 which are not communicated with the air outlet 112 enable the jet air duct 210 to communicate with the outside air, and the air in the jet air duct 210 is discharged from the communication ports 212 which are communicated with the outside air in addition to the jet air outlet 211, so that the air outlet volume and the air outlet speed of the jet air outlet 211 are reduced. Therefore, the baffle 300 is further required to be provided, the baffle 300 is detachably connected with the communication port 212, when the communication port 212 is communicated with the air supply port 112, the baffle 300 is detached, and when the air outlet height is adjusted, the communication port 212 is not communicated with the air supply port 112, the baffle 300 is sealed with the communication port 212, so that the air of the jet air duct 210 can only be ejected from the jet port 211.
Referring to fig. 9 and 10, further, considering that the vertical portions 230 and the horizontal portions 240 of the outer duct case 200 are integrally connected, the space between the vertical portions 230 on both sides of the base 100 is fixed, and when the communication ports 212 and the air supply ports 112 are replaced, it is necessary to simultaneously align and connect the air supply ports 112 on both sides of the base 100 with the communication ports 212, which is difficult to operate. In one embodiment, the outer air duct case 200 includes a first air duct case 250 and a second air duct case 260 at both sides of the base 100, respectively, and the horizontal portion 240 of the first air duct case 250 is detachably connected with the horizontal portion 240 of the second air duct case 260. When the communication port 212 to be communicated with the air supply port 112 needs to be adjusted, the first air duct housing 250 and the second air duct housing 260 can be detached and separated first, and the communication port 212 on the first air duct housing 250 and the second air duct housing 260 can be adjusted respectively, because the outer air duct housing 200 is detached into two parts with two sides not affecting each other, and enough operation space is available to align the communication port 212 with the air supply port 112, so that the operation is convenient and quick. After the communication ports 212 of the first and second air duct cases 250 and 260, which communicate with the air supply port 112, have been adjusted, the horizontal portions 240 and 240 of the first and second air duct cases 250 and 260 are reconnected, and the outer air duct case 200 is restored to a unit. There are many ways to connect the first air duct housing 250 and the second air duct housing 260, including but not limited to, a snap 241 connection, a magnetic connection, etc. For example, a buckle 241 is provided at one end of the horizontal portion 240 of the first air duct housing 250 connected to the horizontal portion 240 of the second air duct housing 260, a slot 242 is correspondingly provided on the horizontal portion 240 of the second air duct housing 260, and the first air duct housing 250 is detachably connected to the second air duct housing 260 by the connection of the buckle 241 with the buckle 241 of the slot 242.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the specification and drawings of the present invention or direct/indirect application in other related technical fields are included in the scope of the present invention.
Claims (10)
1. A bladeless fan, comprising:
the base is internally provided with an air supply duct, and the air supply duct is provided with an air inlet and an air supply outlet;
the fan is arranged in the air supply duct; and
the outer air duct shell is movably arranged on the base, a front-back through confluence opening is formed in the outer air duct shell, a jet flow air duct communicated with the air supply opening is formed in the outer air duct shell, the jet flow air duct is provided with a jet opening, and the jet flow air duct is used for blowing air forward from the jet opening, so that external air is converged towards the front side of the confluence opening; wherein the height of the outer air duct shell relative to the base is adjustable;
the outer air duct shell comprises a vertical part and a horizontal part connected with the vertical part, and the horizontal part and the vertical parts positioned at two sides of the base form the flow converging port; the outer air duct shell is used for being adjusted down to meet the lower air outlet position, and enables the converging port to be resisted by the base to reduce the air outlet quantity.
2. The bladeless fan of claim 1, wherein said outer duct housing is provided with at least two communication ports of different heights, said supply port being selectively communicable with said communication ports.
3. The bladeless fan of claim 2, wherein the base is provided with receiving slots on both sides thereof, the vertical portion being vertically movably disposed outside the receiving slots, and the horizontal portion being above the base.
4. The bladeless fan of claim 3, wherein the vertical portion includes an outer side and an inner side that are connected to each other, the outer side being circular-arc disposed, the inner side being planar disposed, and the jet port being vertically disposed on a front side of the outer side.
5. The bladeless fan of claim 3, wherein the air intake is located on a side of the base, the air intake including a side air intake located on a same side as the vertical portion and a rear air intake facing away from the jet port, the vertical portion being movable to block the side air intake.
6. The bladeless fan of claim 4, wherein said air supply opening is provided with a snap-fit protrusion around the periphery thereof, and said snap-fit protrusion is snapped into said communication opening when said communication opening is in communication with the air supply opening.
7. The bladeless fan of claim 4, wherein said jet ports are provided with baffle plates, said baffle plates being spaced apart in a vertical direction.
8. The bladeless fan of any of claims 2-6, wherein the outer duct housing includes a first duct housing and a second duct housing, the horizontal portion of the first duct housing being removably connected to the horizontal portion of the second duct housing.
9. The bladeless fan of any of claims 3-6, wherein a diverter is provided at a top of said air duct, said diverter directing air in said air duct to respective air outlets on both sides of said base.
10. The bladeless fan of any of claims 2-6 further comprising a baffle for sealing said communication port out of communication with said supply port.
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| CN202111558112.5A CN114087237B (en) | 2021-12-17 | 2021-12-17 | Bladeless fan |
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| CN202111558112.5A CN114087237B (en) | 2021-12-17 | 2021-12-17 | Bladeless fan |
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| CN114087237B true CN114087237B (en) | 2024-03-08 |
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| CN114909338B (en) * | 2022-06-08 | 2024-03-15 | 浙江优美莱控股集团有限公司 | Adjustable bladeless fan structure |
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