WO2011113297A1 - 换气扇 - Google Patents
换气扇 Download PDFInfo
- Publication number
- WO2011113297A1 WO2011113297A1 PCT/CN2011/000209 CN2011000209W WO2011113297A1 WO 2011113297 A1 WO2011113297 A1 WO 2011113297A1 CN 2011000209 W CN2011000209 W CN 2011000209W WO 2011113297 A1 WO2011113297 A1 WO 2011113297A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air
- joint
- air outlet
- curved
- ventilating fan
- Prior art date
Links
Classifications
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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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
- F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
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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
- F04D29/422—Discharge tongues
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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
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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
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
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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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/626—Mounting or removal of fans
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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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/50—Inlet or outlet
- F05D2250/51—Inlet
Definitions
- the present invention relates to a structure of an air blowing device, and more particularly to a ventilating fan in which a multi-wing blower is built. Background technique
- a known ventilating fan 100 is provided with a multi-blade air blower 120 in the box-shaped body 110. Air taken in from the air inlet 111 below the main body 110 is discharged to the outside through an air outlet 112 on the side of the main body 110. Further, in order to discharge air from the air outlet 112, a metal joint 1500 is provided at the air outlet 112 on the side of the main body 110, and the metal joint 1500 is connected to a duct (not shown) that communicates with the outside.
- the air outlet 112 provided in the multi-blade air blower 120 is square, one end of the duct communicating with the outdoor is circular, and since the area of the air outlet 112 of the multi-blade air blower 120 is larger than the cross-sectional area of the duct, it is necessary
- the air passage area is partially reduced in the metal joint 1500, that is, the square air outlet is uniformly reduced and converted into a circular shape. That is to say, the opposite sides of the square of the air outlet 112 are symmetrically reduced from the outer circumference to the center.
- the above-described air blowing device of the prior art has the following problem: Since the square shape of the air outlet 112 is different from the circular shape of the duct, it is difficult to smoothly convert the air blown by the multi-blade air blower 120. That is to say, although the air outlet is evenly shrunk, the air blown by the multi-blade air blower 120 is not uniform, and turbulence is likely to occur, and the ventilating fan cannot ensure the air volume of the air supply due to the turbulence. Therefore, it is necessary to ensure the air volume by making the multi-blade blower large. However, the noise generated by large multi-wing air supply opportunities will be greater.
- Fig. 5 is a schematic view showing the structure of a metal joint of a known ventilating fan.
- the metal joint 1500 of the ventilating fan comprises: an air guiding structure 1100 and a louver 1200 installed inside the air guiding structure 1100; the air guiding structure 1100 is divided into two parts of an air inlet 1110 and an air outlet 1120, an air inlet 1110 and a snail shell equipped with a fan (figure Connected, the air outlet 1120 is connected to a pipe (not shown) connected to the outside; the air inlet 1110 is square, the air outlet 1120 is circular, and the square air inlet 1110 is gradually reduced to extend toward the circular air outlet 1120.
- the air inlet 1110 and the air outlet 1120 are smoothly connected by the side wall 1130 to form a funnel-like structure.
- Shutter 1200 as a whole
- the plane 1210 is formed in the shape of the folded edge 1220, and is mounted on the outdoor side of the circular air outlet 1120 by seven members such as a rubber sleeve 1230, a rivet 1240, and a rubber buckle 1250.
- the metal joint 1500 of the prior art consists of a blind 1200, an air guiding structure 1100, two rubber sleeves 1230, two rivets 1240 and a rubber buckle 1250.
- the inventors of the present invention found that the above-described joint structure of the prior art has the following problems: Since the area of the air inlet 1110 is too large, it cannot be smoothly connected with the snail shell equipped with a fan. That is to say, the air outlet of the fan is sharply enlarged at the portion of the air inlet 1110. In this case, when the wind generated by the wind blows toward the air inlet 1110, the generated wind collides with the side wall 1130 of the air inlet to generate turbulent flow, and there is a problem that causes noise generation and reduces air volume discharge;
- louver 1200 Since the louver 1200 is generally in the shape of a flat surface and a folded edge, a gap is formed between the louver 1200 and the circular air outlet 1120, and airtightness (the wind is easily irrigated into the room through the pipe outdoors) is a problem;
- a primary object of the present invention is to provide a ventilating fan which can have a larger air supply amount in the case of a multi-wing air blower of the same performance.
- a secondary object of the present invention is to provide a ventilating fan which is quieter in operation in the case of a multi-wing air blower of the same performance.
- the present invention provides a ventilating fan, comprising: a multi-blade air blower disposed on a box-shaped body, and a joint connected to the air outlet of the multi-wing blower, wherein the multi-blade air blower is composed of two opposite roll-shaped rolls
- the plate is composed of a snail shell plate connected by the coil plate, and the first coil plate is provided with a total air inlet of the multi-wing blower, and the center line of the air outlet of the joint is offset by the second coil side.
- the joint has a square air inlet and a circular air outlet, and an outer side of the air inlet is disposed in parallel with an end surface of the second coil, and a joint air outlet is disposed in a projection surface of the air inlet, and is connected to the outer side .
- the tongue is disposed at a position closest to the outer side of the blade of the snail shell; the portion of the snail shell tongue and the opposite side thereof and the air outlet portion of the multi-blade blower, the meandering portion is a continuous first bend that bends the airflow direction The portion and the second curved portion are formed.
- the first curved portion and the second curved portion constitute the bent portion.
- the air outlet of the ventilating fan is linearly extended, and has a second straight portion of the snail shell plate; the tongue portion is linearly extended to the air outlet of the ventilating fan, and has a third straight portion of the snail shell plate; the first portion of the outer peripheral portion of the snail shell
- the straight portion and the second straight portion constitute a first curved portion in which the air passage is curved inward
- the second straight portion and the circular portion of the joint constitute a second curved portion in which the air passage is curved outward
- the third straight portion and the circular portion of the joint A third curved portion that forms an air passage that is curved inward; the first curved portion, the second curved portion, and the third curved portion constitute the bent portion.
- the opposite side of the tongue is linearly extended toward the air outlet of the ventilating fan, and the second straight portion of the snail shell plate is provided;
- the first straight portion and the second straight portion of the outer peripheral portion of the snail shell constitute a first curved portion in which the air passage is curved inward, and the second straight portion and the circular portion of the joint constitute a second curved portion in which the air passage is curved outward;
- the two curved portions are smaller than the first curved portion.
- the joint of the present invention comprises: an air guiding structure and a louver installed inside the air guiding structure, the air guiding structure is divided into two parts of an air inlet and an air outlet, and a smooth transition connection between the air inlet and the air outlet is provided by the side wall.
- the shape of the air inlet is the same as the shape of the air outlet of the multi-blade air blower, and constitutes a straight-through structure of the connection;
- the louver is an arc-shaped structure that is curved from the middle to the sides with the shape of the air outlet; the louver It is fixed at the indoor side of the air outlet.
- the air outlet of the air guiding structure is in the projection surface of the air inlet of the air guiding structure, It is connected to one side of the air inlet and is biased.
- the central axis of the air outlet of the air guiding structure is disposed opposite to the central axis of the air inlet of the air guiding structure, and is biased toward one side of the air inlet.
- the air guiding structure is integrally molded from a resin.
- a card slot is disposed around the air guiding structure for fixing the joint to the inside of the metal joint.
- a card position is arranged around the air guiding structure, wherein the card position is a plurality of elastic claws disposed around the outer side of the joint, and the front end of the claw is provided with a protrusion, corresponding to the air outlet wall of the metal joint There are multiple openings.
- the louver has a thin structure, and a sheet-shaped air guiding sheet is provided on a lower surface facing the outdoor side and an upper surface facing the indoor side.
- the advantage of the present invention is that no turbulence is generated at the joint, so that the air volume of the ventilating fan and the noise reduction can be easily ensured. It can provide efficient small air supply and improve the stability of product performance.
- Figure 1 is a schematic view of a known technique
- FIG. 2 is a view showing the structure of a multi-blade air blower and a resin joint according to an embodiment of the present invention
- Figure 3 is a general schematic view of an embodiment of the present invention.
- Figure 4 is a front plan view of the multi-blade air blower and the joint of the present invention
- Figure 5 is a schematic view of a known air guiding structure
- Figure 6 is a schematic illustration of a erroneous installation of the prior art
- Figure 7 is a schematic view of the wind guiding structure of the present invention.
- Figure 8 is a schematic view of another angle of the wind guiding structure of the present invention.
- Figure 9 is a schematic view of the louver of the present invention.
- Figure 10 is a schematic illustration of another embodiment of a louver of the present invention.
- FIG. 11A and 11B are schematic views showing the installation of the wind guiding structure of the present invention into a known metal joint. detailed description
- the ventilation fan 100 includes: a multi-blade air blower 120 disposed in the box-shaped body 110, and a joint 2000 connected to the square air outlet 112 of the multi-blade air blower 120.
- the multi-blade air blower 120 is composed of two oppositely wound first wraps 200
- the second winding plate 300 is composed of a snail shell plate 400 which is sandwiched by the two coil plates, and the first coil plate 200 is provided with a multi-wing blower total air inlet 210.
- the joint 2000 has a square air inlet 2110 and a circular air outlet 2120, and the center line 2121 of the circular air outlet 2120 is offset from the second coil 300 side.
- Fig. 1 means a metal member.
- the joint referred to in the present invention means a joint made of a resin.
- the center line 2121 of the circular air outlet 2120 is offset from the second coil 300 side.
- the outer side 1311 of the air inlet 2110 of the joint 2000 is disposed in line with the end surface 310 of the second coil 300.
- the projection of the air outlet 2120 in the direction of the multi-blade fan 120 falls into the air inlet 2110 and is connected to the outer side 1311. Therefore, the distance between the center line 2121 of the circular air outlet 2120 and the side of the second reel 300 is smaller than the distance from the side of the first reel 200, and is biased toward the second reel, rather than with the first reel 200 and
- the two coils 300 are both in the middle of the same distance.
- the air outlet 2120 of the joint 2000 is disposed on the outer side 1311 of the air inlet 2110 of the joint 2000. Since the air outlet 2120 of the joint 2000 is connected and connected, the wind blown by the multi-blade fan 120 is not uniform, but the outer side 1311 of the air inlet 2110 and the end surface 310 of the second coil 300 can be substantially planar. Therefore, the resistance of the wind from the air inlet 2110 of the joint 2000 to the air outlet 2120 becomes small, and the airflow can be made more concentrated and smooth.
- the wind blown by the blades of the multi-blade air blower 120 can smoothly flow along the second reel 300 side as compared with the side of the first wrap 200 provided with the ventilating fan total air inlet 210. Therefore, the second The windshield 300 has more wind beams than the first coil 200.
- the wind blown from the air outlet 112 of the multi-blade air blower 120 is slowly bent from the air inlet 210 of the ventilating fan, and is concentrated on the side of the second reel 300. Since the first reel 200 and the air inlet 210 are on the same surface, it is difficult for the wind passing through the blades of the multi-blade fan 120 to be sharply bent toward the first reel 200 side. Then, when the air outlet 2120 of the joint 2000 is disposed close to the side of the second reel 300, the wind road surface from the side of the first reel 200 to the side of the second reel 300 is reduced. In order to reduce the influence on the airflow, the square air outlet 112 of the multi-blade air blower can be smoothly converted to a circular duct (not shown).
- the side of the joint 2000 which is not on the second reel 300 is not reduced, and by narrowing the joint 2000 on the side of the first reel 200, the area of the air passage can be narrowed in a short distance, and the influence due to the reduction can be reduced. This makes it possible to suppress the occurrence of turbulence, so that the air volume can be easily ensured. Moreover, noise can be reduced.
- the narrowing of the air passage in the joint portion 2000 as described above means that the joint is formed by sliding the mold in the direction of the air flow when the joint 2000 is formed, and a smooth and reduced shape can be easily formed.
- the side of the blower side that is, the side of the multi-blade blower 120, can also be reduced in this way. However, at this time, it is reduced in a portion close to the blade, and it cannot be reduced in a short distance. Since the air blown from the blade directly collides with the reduced portion, turbulence is generated, so it must be reduced over a long distance. That is, it is most preferable to perform the reduction in the joint portion 2000 of the present embodiment.
- the joint 2000 can be set to be shorter, while the length of the air outlet 112 of the multi-blade air blower 120 is changed to the shape of the pipe while the multi-wing is being used while maintaining the length thereof using the joint of the prior art metal.
- the louver (not shown) is provided at the open end (outdoor side) of the air outlet 112 of the blower 120, the louver can be disposed closer to the air blower body 110 than the prior art. Therefore, when the pipe is installed as in the prior art, even if the screw is fixed to the metal fitting 1500, the screw does not hit the louver. That is, the joint 2000 can maintain the same length as the metal joint 1500 shown in Fig. 1 while ensuring the space required for the screw when installing the pipe.
- the air passage 700 of the present invention has a meandering portion 780 therein.
- the tongue 440 is disposed at a position closest to the outer side of the blade of the snail shell 400.
- the enlarged portion of the tongue portion 440 has an enlarged portion 740 of the air passage 700 in the direction of rotation of the blade. Extending the enlarged portion 740 until the opposite side 450 of the tongue portion 440 is provided with the first straight portion 410 of the snail shell 400; and the opposite side 450 of the tongue portion 440 is linearly extended to the air outlet 2120 of the ventilating fan, and the snail is provided.
- the second straight portion 420 of the shell plate 400; the tongue portion 440 is linearly extended toward the air outlet 2120 of the ventilating fan, and the third straight portion 430 of the snail shell 400 is provided.
- the first straight portion 410 is opposed to a straight line from the center of the connecting blade to the tongue 440 Tilt about 10 degrees ( ⁇ 1 as shown in Figure 4), set near the air outlet 2120 side of the ventilating fan. That is, the first straight portion 410 is provided to suppress the expansion of the air passage 700.
- the enlarged portion 740 in the present embodiment is formed in a range from 284 degrees from the position of the tongue portion 440 to the direction in which the blade rotates. ( Figure 2 shown in Figure 4)
- the first straight portion 410 and the second straight portion 420 at the outer peripheral portion of the snail shell constitute a first curved portion 710 in which the air passage is curved inward; the second straight portion 420 and the circular portion 138 of the joint 2000 constitute a wind passage that is curved outward.
- the second curved portion 720; the third straight portion 430 and the circular portion 138 of the joint 2000 constitute a third curved portion 730 in which the air passage is curved inward.
- the meandering portion 780 is constituted by the first curved portion 710, the second curved portion 720, and the third curved portion 730.
- bent portion 780 means that the airflow direction is bent at the snail shell plate 400 and the joint 2000 in the air passage between the enlarged portion 740 formed by the multi-blade air blower 120 and the joint 2000 and the air outlet 2120 of the joint 2000. Forming.
- the above-mentioned outward bending is the direction in which the wall surface of the snail shell is expanded, as shown in the direction of the figure ⁇ ; the inward bending is the direction in which the wall surface of the snail shell is reduced, as shown in the figure ⁇ .
- the cross-sectional area of the air passage 700 is actually determined by the relationship between the curvature of the opposite side 450 and the other surface 460, the cross-sectional area of the air passage 700 is not reduced when it is expanded.
- the expansion of the air passage 700 is suppressed in the field of the tongue portion 440 and the connecting portion of the first straight portion 410 and the second straight portion 420 connecting the opposite side 450 thereof. Moreover, this not only makes the static pressure in the multi-blade air blower 120 more stable, but also prevents the wind beam from being disordered.
- the collision angle of the air blown from the blade to the third straight portion 430 can be reduced, and the turbulence occurring in this portion can be reduced.
- the air flowing through the first straight portion 410 side is corrected in the course of the flow to the air outlet 112 of the multi-blade air blower 120 by the centrifugal force of the blade.
- the second bending portion 720 when air flows from the air outlet 112 of the multi-blade air blower 120 to the joint 2000, the airflow corrected in the first curved portion 710 is slightly corrected again.
- the third straight portion 430 provided on the left side and the first straight portion 410 and the second straight portion 420 provided on the right side can be blown out from the blade
- the horizontally uneven airflow is corrected.
- the wind blown by the blade flows along the inner side of the snail shell 400 by the centrifugal force.
- the air flow of the air in the multi-blade blower 120 To be corrected, the density of the wind beam is relatively uniform, and the airflow becomes smooth.
- the noise generated by the blade is combined with the first straight portion 410, the third straight portion 430, the inner wall or the side of the joint 2000, the second straight portion 420, and the inner wall of the joint 2000. When a collision occurs, it spreads to the air outlet 2120 of the joint 2000. In other words, noise can be reduced by causing it to collide repeatedly.
- the square wind path can be smoothly converted into a circular air path by the joint 2000. Therefore, in the front view state shown in Fig. 4, even if the joint portion 2000 is narrowed symmetrically in the narrowing portion 139, the airflow can be ensured smoothly.
- the bending angle of the first curved portion 710 is ⁇ 3, and the bending angle of the second curved portion 720 is ⁇ 4, which is ⁇ 4 ⁇ 3 in the present embodiment, that is, compared with the first curved portion 710.
- the second curved portion 720 is slightly curved in the opposite direction. In the present embodiment, for example, ⁇ 3 is 14 degrees, ⁇ 4 is 6.5 degrees, and ⁇ 5 is 6 degrees.
- the second bending portion 720 is smaller than the bending degree of the first bending portion 710, the sound vibration generated by the air passing through the bending portion 780 colliding with the bending portion 780 does not spread, but is concentrated, and is made by the joint 2000. It is in communication with the inside of the pipe. That is, the airflow corrected at the first bending portion 710 is again slightly corrected by the second bending portion 720, thereby ensuring the stability of the airflow and the noise value.
- the values of ⁇ 2 to ⁇ 5 are not the values as defined in the above embodiments, the inclination angle of the first straight portion 410, the angle between the first straight portion 410 and the second straight portion 420, and the second straight portion 420.
- the angle of the joint 2000, the bending angle of the third straight portion 460 and the joint 2000 may be between 5 and 15 degrees, respectively.
- the size indicated is relative. That is to say, compared with ⁇ 4, the angle of ⁇ 3 can be about 2 times that of ⁇ 4, and the angles of ⁇ 4 and ⁇ 5 can be equal.
- the multi-blade air blower 120 in which the first reel 200 and the second reel 300 are sandwiched by the snail shell 400 is described.
- the first reel 200 is formed of a metal plate
- the second reel 300 and the snail shell 400 are integrally formed by resin molding
- the first reel 200 and the snail shell 400 are integrally molded from a resin
- the second reel is formed. It is also possible to form a combination of 300 sheets of metal plates.
- the first reel 200 and the snail shell 400 are integrally molded from a resin, in order to make the first wrap 200 and the snail shell 400 more smoothly connected, it is preferable to connect by a curved surface.
- the second coil 300 of the air outlet 112 of the multi-blade air blower 120 The side is a right angle, and the side of the first coil 200 is a curve.
- the air inlet of the joint 2000 is also provided in the same shape, within the shape of the square air inlet 2110 of the present invention.
- the ventilating fan joint 2000 includes: an air guiding structure 2100 and a louver 2200 installed inside the air guiding structure 2100.
- the air guiding structure 2100 is divided into two parts: an air inlet 2110 and an air outlet 2120, and the air inlet 2110 and the air outlet 2110
- the tuyere 2120 is smoothly connected by a side wall 2130.
- the shape of the air inlet 2110 is the same as that of the snail shell provided with the multi-blade fan 120 as an example of a blower, and constitutes a straight-through type of connection.
- the straight-through structure is that the air inlet 2110 of the guiding wind structure 2100 is square, the air outlet 2120 is circular, and the shape of the air inlet 2110 is set to be the same as the shape of the air outlet of the blower snail shell, thereby reducing the snail shell air outlet.
- the wind blown from the air outlet of the snail shell is smoothly guided through the air inlet 2100 of the air guiding structure 2100.
- the air guiding structure 2100 is designed to be a straight-through structure that can be smoothly connected with the snail shell equipped with the fan, the wind generated by the fan blows the air inlet 2110 of the wind guiding structure 2100, and does not advance.
- the side wall 2130 of the tuyere 2110 collides, so that no turbulent flow occurs, and the noise is reduced while ensuring the air volume.
- the air outlet 2120 of the air guiding structure 2100 is biased to be connected to the outer side 1311 of the air inlet 2110. That is, the central axis 2121 of the air outlet 2120 of the air guiding structure 2100 is disposed opposite to the central axis 2111 of the air inlet 2110, and is biased toward the outer side 1311 of the air inlet 2110. Since the wind blown by the blower is uneven, the outer side 1311 of the air inlet 2110 and the side 1312 of the air outlet 2120 of the air guiding structure 2100 are arranged to be identical, so that the resistance of the air outlet to the circular transition can be made small.
- the air guiding structure 2100 can be set to be shorter, and the shape of the fan air outlet is converted to the shape of the duct through the air guiding structure 2100 while maintaining the metal joint (not shown) of the prior art, and the air outlet is compared with the known technology.
- the louver (not shown) of the open end (outdoor side) can be further disposed to the side of the ventilating fan body.
- the wind is rotated by biasing the rotating shaft 2210 of the louver against the outer side 1311 of the air inlet 2110, in the wind.
- the outer side 1311 of the air inlet 2110 with a large number of bundles can ensure the opening degree of the louver.
- the portion near the louver 2210 since a large wind beam is required to open the louver, the portion blown toward the vicinity of the louver 2210 is more easily opened than the front end portion of the louver that is blown away from the rotating shaft 2210. stable.
- a large opening can be ensured. Therefore, there is no turbulence due to the weight of the blinds. It can reduce noise and ensure air volume.
- the air guiding structure 2100 of the present embodiment is integrally molded from a resin, that is, equivalent to one air guiding structure 1100, two rubber sleeves 1230, two rivets 1240 and the like in the metal joint 1500 of the prior art.
- a rubber buckle 1250 is composed of body. Therefore, in the present embodiment, the joint 2000 is composed of only one louver 2200 and one air guiding structure 2100, and does not need to pass through two rubber sleeves 1230, two rivets 1240 and one rubber buckle 1250 as in the prior art.
- the parts can be used to secure the blinds 2200 in the joint. While saving materials, it also reduces man-hours, which reduces costs; and the light weight of the resin helps the blinds 2200 to be smoothly opened, reducing noise and ensuring air volume, and improving product performance stability.
- FIG. 9 is a schematic illustration of the louver of the present invention.
- the louver 2200 is an arc-shaped structure that is curved from the center to the both sides in the shape of the air outlet 2120, and is fixed to the indoor side of the air outlet 2120.
- the curved shape means that the louver 2200 is bent from the middle to the both sides, that is, the louver 2200 is integrally formed into a tortoise shell shape.
- the indoor side of the air outlet 2120 refers to the side close to the air outlet of the snail shell.
- the louver 2200 is designed to match the arc-shaped structure of the air outlet 2120 of the air guiding structure 2100, the arc structure can closely cooperate with the air outlet 2120 of the air guiding structure 2100, and no gap occurs, so that airtightness does not occur. Poor sexual condition.
- the louver 2200 is designed to be a lightweight, lightweight structure. Since the louver 2200 is fixed to the indoor side of the air outlet 2120 of the air guiding structure 2100, that is, the louver 2200 is close to the snail shell with the fan, which increases the wind pressure, and the louver 2200 is designed to be light and thin.
- the structure is changed from the thickness of 1.2 mm of the known technology to a thickness of 0.8 mm, and the outer surface is also provided with a lattice-shaped reinforcing rib. Under the action of the wind blown by the snail shell, the blind 2200 is more easily opened, that is, Said to help reduce noise.
- FIG. 10 is a schematic illustration of another embodiment of a louver of the present invention.
- the louver 2200 provided in the air guiding structure 2100 is provided with a sheet-shaped air guiding piece 2230 toward the lower surface 2210 on the outdoor side and the upper surface 2220 on the indoor side.
- FIG. 11A and 11B are schematic views showing the installation of a wind guide structure of the present invention into a metal joint of a known technique.
- the present invention also provides a plurality of card slots 2140 around the air guiding structure 2100.
- the card slot 2140 includes a plurality of elastic claws 2141 disposed around the outer periphery of the connector 2000.
- the front end of the claw 2141 is provided with a protrusion 2142.
- a plurality of openings 4010 are correspondingly formed in the air outlet wall of the known metal joint 4000.
- the projection 2142 provided at the front end of the plurality of elastic claws 2141 has a guiding function, and along the inner wall of the metal joint 4000 along the projection 2142, the joint 2000 is smoothly inserted.
- the projection 2142 at the front end of the claw 2141 is caught in the opening 4010 of the air outlet of the metal joint 4000, and the joint is 2000 by the elastic action of the claw 2141. It is securely fixed within the metal joint 4000.
- the shape of the air outlet of the fan can be converted to the shape of the pipe in a shorter distance than the metal joint 1500 of the prior art. That is, while maintaining the full length of the known art metal joint 1500, the shape of the fan air outlet is converted to the shape of the duct by the air guiding structure 2100, which is located at the open end of the air outlet 2120 of the air guiding structure 2100 as compared with the prior art ( The louver 2200 of the outdoor side can be disposed more toward the side of the ventilating fan body. Therefore, when the pipe is installed as in the known art, as shown in Fig. 11B, even if the screw 1300 is used, the screw 1300 does not hit the louver 2200.
- the position of the louver 2200 can be set to about 30 m more toward the indoor side than the known technique. Thereby, the stability of product performance is improved. Further, the length L1 of the above joint is smaller than the length L2 of the metal joint of the prior art.
- the installer fixes the pipe to the metal joint 4000 with the screw 1300, even if the screw 1300 protrudes longer than the wall of the metal joint 4000, the screw 1300 does not interfere with the joint to make the louver 2200 disposed therein. Unable to open. It can avoid the occurrence of the louver 2200 being unable to open and close due to the screwing during the installation of the ventilating fan, improving the stability of the product performance and the construction property.
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Description
换气扇 技术领域
本发明是关于一种送风装置的构造, 尤其是指一种内设多翼送风机的 换气扇。 背景技术
如图 1所示, 为一种公知的换气扇 100, 箱状的本体 110内设有多翼 送风机 120, 从本体 110下面的进风口 111吸入的空气通过本体 110侧面 的出风口 112排出室外。 而且, 为了从上述出风口 112将空气排出室外, 在上述本体 110侧面的出风口 112处设有金属接头 1500,该金属接头 1500 与室外相连通的管道 (图中未示) 相连接。
由于上述多翼送风机 120设有的出风口 112为方形, 但与室外相连通 的管道的一端为圆形, 同时, 由于多翼送风机 120的出风口 112的面积比 管道的截面积大, 有必要在金属接头 1500部分縮小风路面积, 即将方形 的出风口均匀缩小转换成圆形。 也就是说, 出风口 112方形的相对的边从 外周向中心对称缩小转换。
上述公知技术的送风装置存在以下课题: 由于出风口 112的方形形状 与管道的圆形形状不同,因此多翼送风机 120吹出的空气很难平滑地转换。 也就是说, 虽然出风口均匀缩小的话, 但多翼送风机 120吹出的空气仍不 均匀, 很容易产生紊流, 受该紊流的影响, 换气扇不能确保送风的风量。 因此, 需要通过使多翼送风机大型化来确保风量。 但大型的多翼送风机会 产生的噪音会更大。
图 5为一种公知的换气扇的金属接头结构示意图。换气扇的金属接头 1500包括: 导风结构 1100和安装在导风结构 1100内部的百叶窗 1200; 导风结构 1100分为进风口 1110和出风口 1120两部分, 进风口 1110和装 有风机的蜗牛壳 (图中未示) 连接, 出风口 1120和连接室外的管道 (图 中未示)连接; 进风口 1110为方形, 出风口 1120为圆形, 方形的进风口 1110逐渐缩小向圆形的出风口 1120延伸, 进风口 1110和出风口 1120之 间由侧壁 1130平滑过渡连接, 形成类似漏斗的结构。 百叶窗 1200整体为
平面 1210加折边 1220的形状, 并通过胶套 1230、 铆钉 1240、 胶扣 1250 等七个部件被安装在圆形的出风口 1120靠室外侧的地方。
如上说述, 公知技术的金属接头 1500由一个百叶窗 1200、 一个导风 结构 1100、 二个胶套 1230、 二个铆钉 1240和一个胶扣 1250组成。
本发明的发明人发现上述公知技术的接头结构存在以下问题: 由于进风口 1110的面积过大, 不能和装有风机的蜗牛壳顺畅地连接。 也就是说, 风机的出风口在进风口 1110部分急剧扩大。 这样的话, 当风 机产生的风吹向进风口 1110时, 产生的风会和进风口的侧壁 1130发生碰 撞而产生乱流, 存在导致噪音产生的同时降低风量排出的问题;
由于百叶窗 1200整体为平面加折边的形状, 导致百叶窗 1200和圆形 出风口 1120之间产生缝隙, 存在气密性 (风容易在室外通过管道反灌入 室内) 不良的问题;
另外, 如图 6所示, 由于百叶窗 1200被安装在圆形出风口 1120靠室 外侧的地方, 当安装者用螺丝 1300固定连接室外管道 1210与出风口时, 螺丝 1300会碰到百叶窗 1200, 存在百叶窗不 1200能打开的问题。 发明内容
本发明的主要目的在于提供一种换气扇, 在采用相同性能的多翼送风 机的情况下, 可以有更大的送风量。
本发明的次要目的在于提供一种换气扇, 在采用相同性能的多翼送风 机的情况下, 运转时更加安静。
为实现上述目的, 本发明提供一种换气扇, 包括: 设置于箱状本体的 多翼送风机, 以及和该多翼送风机出风口相连接的接头,上述多翼送风机 由两块相对的卷形状的卷板和被该卷板相夹连接的蜗牛壳板所构成, 第一 卷板上设有多翼送风机总进风口, 接头的出风口的中心线靠第二卷板侧偏 置。
上述接头具有方形进风口和圆形出风口, 上述进风口的外侧边与上述 第二卷板的端面一致设置, 接头出风口在上述进风口的投影面内, 并与上 述外侧边相连接。
在多翼送风机和接头形成的扩大部和接头出风口之间的风路中, 在蜗
牛壳板和接头处形成使气流方向弯曲的曲折部。
在离蜗牛壳板的扇叶外侧最近的位置设置舌部; 在蜗牛壳舌部和与其 相对面相连结的部分以及多翼送风机的出风口部分, 曲折部由使气流方向 弯曲的连续的第一弯曲部和第二弯曲部所形成。
延长所述的扩大部直至上述舌部的对面侧, 设有蜗牛壳板的第一直线 部; 将上述舌部的对面侧向换气扇的出风口直线状延长, 设有蜗牛壳板的 第二直线部; 在蜗牛壳的外周部的第一直线部和第二直线部构成风路向内 侧弯曲的第一弯曲部, 第二直线部和接头的圆形部构成风路向外侧弯曲的 第二弯曲部; 上述第一弯曲部和第二弯曲部构成所述的曲折部。
在离蜗牛壳板的扇叶外侧最近的位置设置舌部; 延长所述的扩大部直 至上述舌部的对面侧, 设有蜗牛壳板的第一直线部; 将上述舌部的对面侧 向换气扇的出风口直线状延长, 设有蜗牛壳板的第二直线部; 上述舌部向 换气扇的出风口直线延长, 设有蜗牛壳板的第三直线部; 在蜗牛壳的外周 部的第一直线部和第二直线部构成风路向内侧弯曲的第一弯曲部, 第二直 线部和接头的圆形部构成风路向外侧弯曲的第二弯曲部, 第三直线部和接 头的圆形部构成风路向内侧弯曲的第三弯曲部; 上述第一弯曲部和第二弯 曲部和第三弯曲部构成所述的曲折部。
延长所述的扩大部直至上述舌部的对面侧, 设有蜗牛壳板的第一直线 部;
将上述舌部的对面侧向换气扇的出风口直线状延长, 设有蜗牛壳板的 第二直线部;
在蜗牛壳的外周部的第一直线部和第二直线部构成风路向内侧弯曲 的第一弯曲部, 第二直线部和接头的圆形部构成风路向外侧弯曲的第二弯 曲部; 第二弯曲部比第一弯曲部的弯曲度小。
更进一步, 本发明所述的接头包括: 导风结构和安装在导风结构内部 的百叶窗, 导风结构分为进风口和出风口两部分, 进风口和出风口之间由 侧壁平滑过渡连接, 所述的进风口的形状与多翼送风机的出风口形状相 同, 构成连接的直通型结构; 所述的百叶窗为配合出风口形状的从中间向 两侧弯曲的弧形结构; 所述的百叶窗固定在出风口靠室内侧处。
所述的导风结构的出风口在上述导风结构的进风口的投影面内, 为使
其与上述进风口的一边相连接而偏设。
所述的导风结构的出风口的中心轴相对于所述的导风结构的进风口 的中心轴, 偏向进风口的一边设置。
所述的导风结构由树脂一体注塑而成。
所述的导风结构的周围设置卡位, 用于将该接头固定在金属接头的内 部。
所述导风结构的周围设置卡位, 所述的卡位为在接头外周围设置复数 个弹性的卡爪, 卡爪的前端设有突块, 在所述的金属接头的出风口壁上相 应设有复数个开口。
所述的百叶窗为薄型结构, 靠向室外侧的下表面和靠向室内侧的上表 面设有片状的导风片。
本发明的优点在于在接头处不会产生紊流, 所以, 可以很容易确保换 气扇的风量和降低噪音。 可以提供高效的小型送风装置, 而且可以提高产 品性能的稳定性。 附图说明
图 1是公知技术示意图;
图 2为本发明的实施例的多翼送风机和树脂制接头的结构;
图 3是本发明的实施例的整体示意图;
图 4是本发明中的多翼送风机和接头的正面平视状态示意图; 图 5是公知技术的导风结构的示意图;
图 6是公知技术的错误安装的示意图;
图 7是本发明的导风结构的示意图;
图 8是本发明的导风结构的另一个角度的示意图;
图 9是本发明的百叶窗的示意图;
图 10是本发明的百叶窗的另一种实施例的示意图;
图 11A、 11B是本发明的导风结构安装入公知的金属接头中的示意图。 具体实施方式
如图 2和图 3所示, 为本发明实施例的示意图。 换气扇 100, 包括:
设置于箱状本体 110内的多翼送风机 120, 以及和该多翼送风机 120的方 形的出风口 112相连接的接头 2000,上述多翼送风机 120由两块相对的卷 形状的第一卷板 200、 第二卷板 300和被该两个卷板相夹连接的蜗牛壳板 400所构成, 第一卷板 200上设有多翼送风机总进风口 210。 接头 2000具 有方形进风口 2110和圆形的出风口 2120, 圆形的出风口 2120的中心线 2121靠第二卷板 300侧偏置。
需要说明的是, 在图 1中所示的现有技术的接头是指金属制的部件。 而本发明所指的接头是指树脂制的接头。
在此, 以空气在接头 2000中的实际流动来进行说明。
上述的圆形的出风口 2120的中心线 2121靠第二卷板 300侧偏置是指, 接头 2000的进风口 2110的外侧边 1311与上述第二卷板 300的端面 310 一致设置; 接头 2000的出风口 2120在向多翼送风机 120方向的投影落入 上述进风口 2110内, 并与上述外侧边 1311相连接。 因此, 圆形的出风口 2120的中心线 2121与第二卷板 300侧的距离小于与第一卷板 200侧的距 离, 偏向第二卷板设置, 而不是在与第一卷板 200与第二卷板 300两者等 距离的正中间。
通过使接头 2000的进风口 2110的外侧边 1311与上述第二卷板 300 的端面 310—致设置, 即为使接头 2000出风口 2120在投影面与上述接头 2000进风口 2110的外侧边 1311相连接而偏设接头 2000的出风口 2120, 因此虽然多翼送风机 120吹出的风不均匀, 但由于可以使进风口 2110的 外侧边 1311与上述第二卷板 300的端面 310基本成平面状, 因此风从接 头 2000进风口 2110到出风口 2120之间的受到的抵抗变小, 可以使上述 气流更加集中和顺畅。 通过以上的结构, 可以使多翼送风机 120的扇叶吹 出的风与设有换气扇总进风口 210的第一卷板 200侧相比,沿第二卷板 300 侧顺畅地流动, 所以, 第二卷板 300的风束比第一卷板 200的风束多。
也就是说, 从多翼送风机 120的出风口 112吹出的风是从换气扇的进 风口 210缓慢弯曲后集中于第二卷板 300侧吹出的。 因为第一卷板 200与 进风口 210在同一面上, 所以, 穿过多翼送风机 120扇叶的风很难急剧向 第一卷板 200侧弯曲流动。 于是, 当接头 2000的出风口 2120靠近第二卷 板 300侧设置时, 通过缩小从第一卷板 200侧到第二卷板 300侧的风路面
积来减小对气流的影响, 从多翼送风机的方形出风口 112可以平滑地向圆 形管道 (图中未示) 转换。
也就是说, 接头 2000的靠第二卷板 300侧不缩小, 通过大幅缩小靠 第一卷板 200侧的接头 2000可以在短距离内缩小风路的面积,减小因缩小 而造成的影响。 由此可以抑制紊流的发生, 所以可以很容易确保风量。 而 且, 还可以降低噪音。
而且, 像上述的那样在接头 2000部分缩小风路是指在接头 2000成型 制作时, 通过使模具向气流方向滑动成型而实现的, 可以简单形成顺滑的 缩小形状。 在送风机侧也就是多翼送风机 120侧也可以考虑这样来缩小, 但是, 此时是在离扇叶很近的部分进行縮小, 短距离内无法做到缩小。 因 为从扇叶吹出的空气直接碰撞縮小部分会产生乱流, 所以, 必须在很长的 距离内进行缩小。 也就是说, 在本实施方式的接头 2000部分进行縮小是 最理想的。
另外, 通过上述结构, 接头 2000可以设置为更短, 在采用现有技术 金属制的接头维持其长度的同时, 多翼送风机 120的出风口 112的形状向 管道形状转换过程中, 当在多翼送风机 120的出风口 112的开口端(室外 侧) 设置百叶窗 (图中未示) 时, 与现有技术相比, 百叶窗可以更靠近送 风装置本体 110侧设置。 因此, 和现有技术一样安装管道时, 即使使用螺 丝固定管道与金属制的接头 1500, 螺丝也不会碰到百叶窗。 也就是说, 接 头 2000 即使在确保安装管道时使用螺丝所需的空间的同时, 可以维持与 图 1所示的金属接头 1500的长度相等。
为进一步确保风量和降低噪音, 如图 4显示的多翼送风机 120和接头 2000的正面平视状态, 在图中可见本发明的风路 700中具有曲折部 780。
在离蜗牛壳板 400的扇叶外侧最近的位置设置舌部 440。在该舌部 440 的延长部沿上述扇叶的转动方向, 具有风路 700的扩大部 740。 延长该扩 大部 740直至上述舌部 440的对面侧 450设有蜗牛壳板 400的第一直线部 410; 将上述舌部 440的对面侧 450向换气扇的出风口 2120直线状延长, 设有蜗牛壳板 400的第二直线部 420;上述舌部 440向换气扇的出风口 2120 直线延长, 设有蜗牛壳板 400的第三直线部 430。
而且, 相对于从连接扇叶的中心到舌部 440的直线, 第一直线部 410
倾斜约 10度(如图 4所示的 Θ 1 ), 靠近换气扇的出风口 2120侧设置。 也 就是说, 第一直线部 410为抑制风路 700的扩大而设置。 为实现该目的, 本实施例中的扩大部 740是在从舌部 440 的位置开始向扇叶转动方向的 284度的范围内形成的。 (如图 4所示的 Θ 2 )
在蜗牛壳的外周部的第一直线部 410和第二直线部 420构成风路向内 侧弯曲的第一弯曲部 710;第二直线部 420和接头 2000的圆形部 138构成 风路向外侧弯曲的第二弯曲部 720;第三直线部 430和接头 2000的圆形部 138构成风路向内侧弯曲的第三弯曲部 730。 由第一弯曲部 710、第二弯曲 部 720和第三弯曲部 730构成曲折部 780。 也就是说, 折曲部 780是指在 多翼送风机 120和接头 2000形成的扩大部 740和接头 2000出风口 2120 之间的风路中, 在蜗牛壳板 400和接头 2000处使气流方向弯曲而形成的。
在本发明上述说的向外侧弯曲是指蜗牛壳壁面扩张的方向,如图中所 示的方向 Α; 所说的向内侧弯曲是指蜗牛壳壁面縮小的方向, 如图中所示 的方向 Β。 但是, 由于风路 700截面积实际是由对面侧 450和另一面 460 的弯曲度的关系所决定,因此并不是时而扩大时而缩小风路 700的截面积。
通过第一直线部 410的作用, 在舌部 440和连结其对面侧 450的第一 直线部 410和第二直线部 420的连接部分的领域,风路 700的扩大被抑制。 而且, 这样不但可以使多翼送风机 120内的静压更加稳定, 而且可以防止 风束的错乱。
另外, 通过第 1弯曲部 710的作用,可以减小从扇叶吹向第三直线部 430的空气的碰撞角度, 可以减少在该部分发生的紊流。 另外, 在对面侧 450的第二直线部 420, 通过扇叶的离心力, 靠第一直线部 410侧流动的 空气在流向多翼送风机 120的出风口 112的过程中,其方向被修正。另外, 在第二弯曲部 720, 空气从多翼送风机 120的出风口 112流向接头 2000 时, 在第一弯曲部 710被修正的气流再次被微修正。
也就是说, 在图中所示的正面平视状态, 通过设置于左侧的第三直线 部 430和设置于右侧的第一直线部 410、 第二直线部 420, 可以对从扇叶 吹出的水平方向不均匀的气流进行修正。
由以上结构, 扇叶吹出的风通过离心力的作用沿蜗牛壳板 400 的内 侧流动。 此时, 通过曲折部 780的作用, 多翼送风机 120内空气的气流方
向被补正, 风束的密度比较均匀, 其气流变得顺畅。 而且, 因曲折部 780 而使风路弯曲形成, 所以扇叶发生的噪音一边与第一直线部 410、 第三直 线部 430、 接头 2000的内壁或者一边与第二直线部 420、 接头 2000内壁 发生碰撞, 一边向接头 2000的出风口 2120扩散。 也就是说, 通过使其反 复发生碰撞, 可以降低噪音。
如此为配合管道的形状,通过接头 2000可以将方形的风路平滑地转 换为圆形风路。 因此, 在图 4中所示的正面平视状态, 在缩小部 139即使 左右对称缩小接头 2000, 也能确保气流顺畅。
再如图 4所示, 第一弯曲部 710的弯曲角度为 Θ 3 , 第二弯曲部 720 的弯曲角度为 Θ 4, 本实施例中 Θ 4< Θ 3, 即与第一弯曲部 710相比, 第二 弯曲部 720稍向反方向弯曲。 在本实施方式中, 例如 Θ 3为 14度, Θ 4为 6. 5 度, Θ 5为 6度。
由于第二弯曲部 720比第一弯曲部 710的弯曲度小, 经过曲折部 780 的空气与该曲折部 780相碰撞而产生的声振不会扩散,而是将其集聚起来, 通过接头 2000使其与管道内相连通。 也就是说, 通过第二弯曲部 720对 在第一弯曲部 710被修正的气流再次进行微修正, 以此来确保气流的稳定 和噪音值。
另外, 上述 θ 2〜 θ 5的值并非如以上实施例所限定的值, 第一直线 部 410的倾斜角度、 第一直线部 410和第二直线部 420的角度、 第二直线 部 420和接头 2000的角度、第 3直线部 460和接头 2000的弯曲角度可以 分别在 5度〜 15度之间。而且, 所指的大小是相对而言的。 也就是说, Θ 3与 Θ 4相比, Θ 3角度可以是 Θ 4的 2倍左右, Θ 4和 Θ 5的角度可以 相等。
另外, 在本实施方式中, 对第一卷板 200和第二卷板 300相夹蜗牛壳 板 400构成的多翼送风机 120进行了说明, 当然也并非一定要由各个不同 的部品组合, 例如, 第一卷板 200由一块金属板形成, 第二卷板 300和蜗 牛壳板 400由树脂一体成型组合而成也可以, 或者第一卷板 200和蜗牛壳 400由树脂一体成型, 第二卷板 300由金属板形成组合也可以。
另外, 如上所述, 当第一卷板 200和蜗牛壳板 400由树脂一体成型而 成时, 为了使第一卷板 200和蜗牛壳板 400相连接处更加平滑, 通过曲面 进行连接最为理想。 此时, 多翼送风机 120的出风口 112的第二卷板 300
侧为直角, 第一卷板 200侧为曲线。
而且, 如图 2所示, 为配合该出风口 112的形状, 接头 2000的进风 口也设置成相同的形状, 在本发明的方形进风口 2110的形状范围内。
下文详细说明本发明的接头 2000的内部和外部结构。
如图 7、 图 8所示, 为本发明导风结构的示意图。 如图 7所示, 换气 扇的接头 2000,包括: 导风结构 2100和安装在导风结构 2100内部的百叶 窗 2200, 导风结构 2100分为进风口 2110和出风口 2120两部分, 进风口 2110和出风口 2120之间由侧壁 2130平滑过渡连接。
再请同时参见图 2,进风口 2110的形状与设有作为送风机一例的多翼 送风机 120的蜗牛壳的出风口形状相同, 构成连接的直通型结构。 所述的 直通结构是指导风结构 2100的进风口 2110为方形, 出风口 2120为圆形, 进风口 2110 的形状与送风机蜗牛壳的出风口形状设置成一样, 这样就减 小了蜗牛壳出风口与导风结构 2100进风口 2110之间的段差, 蜗牛壳出风 口吹出的风被顺畅地引导穿过导风结构 2100进风口 2110。 也就是说, 通 过上述的结构, 由于导风结构 2100设计成和装有风机的蜗牛壳能够顺畅 连接的直通结构, 所以, 风机产生的风吹向导风结构 2100的进风口 2110 时, 不会和进风口 2110的侧壁 2130发生碰撞, 也就不会产生乱流, 降低 了噪音的同时确保了风量。
如图 3和图 8所示, 前文己经叙述, 导风结构 2100的出风口 2120为 与上述进风口 2110的外侧边 1311相连接而偏设。 即导风结构 2100的出 风口 2120的中心轴 2121相对于进风口 2110的中心轴 2111, 偏向进风口 2110的外侧边 1311设置。由于送风机吹出的风不均匀,通过使进风口 2110 的外侧边 1311与导风结构 2100出风口 2120的一边 1312设置为一致, 可 以使出风口向圆形转换的抵抗变小。 也就是说, 将风机吹出的风束多的一 侧与进风口 2110的外侧边 1311相对准。 因此, 导风结构 2100可以设置 为更短, 维持公知技术的金属接头 (图中未示) 的同时, 风机出风口的形 状通过导风结构 2100 向管道形状转换, 与公知技术相比, 出风口的开口 端 (室外侧) 的百叶窗 (图中未示) 可以更向换气扇本体侧设置。
而且,如图 9所示,从把出风口 2120分为上和下的中心轴 2122来看, 通过将百叶窗的转轴 2210偏靠于进风口 2110的外侧边 1311设置, 在风
束较多的进风口 2110的外侧边 1311可以保证百叶窗的开度。在百叶窗转 轴 2210 附近的部分, 由于打开百叶窗需要很大的风束, 所以, 和大风束 吹向远离转轴 2210的百叶窗的前端部相比, 吹向百叶窗转轴 2210附近的 部分更加容易使打开的状态稳定。 而且, 还可以确保较大的开度。 因此, 不会因为百叶窗的重量而产生乱流。 可以降低噪音和确保风量。
再如图 7所示, 本实施例中导风结构 2100由树脂一体注塑而成, 即 相当于将公知技术金属接头 1500中的一个导风结构 1100、二个胶套 1230、 二个铆钉 1240和一个胶扣 1250—体组成。因此,在本实施例中,接头 2000 就只由一个百叶窗 2200和一个导风结构 2100构成了, 不需要像公知技术 中要通过二个胶套 1230、二个铆钉 1240和一个胶扣 1250等五个部件才能 将百叶窗 2200 固定在接头中。 在节省材料的同时, 还减少了工时, 也就 是降低了成本; 并且树脂的重量轻, 有助于百叶窗 2200被顺利地打开, 降低噪音和确保风量, 提高产品性能的稳定性。
图 9为本发明的百叶窗的示意图。 如图 9所示, 百叶窗 2200为配合 出风口 2120形状的从中间向两侧弯曲的弧形结构, 并固定在出风口 2120 靠室内侧处。 所述的弧形是指把百叶窗 2200从其中间向两侧弯曲设置, 即将百叶窗 2200整体设置成乌龟壳形状。 出风口 2120的室内侧是指靠近 蜗牛壳出风口的一侧。
同时, 由于百叶窗 2200设计成配合导风结构 2100的出风口 2120形 状的弧形结构, 弧形结构能和导风结构 2100的出风口 2120紧密配合, 不 会出现缝隙, 也就不会出现气密性不良的情况。
在本实施例中, 百叶窗 2200设计成重量轻的薄型结构。 由于将百叶 窗 2200固定在导风结构 2100出风口 2120靠室内侧的地方, 就是说百叶 窗 2200离装有风机的蜗牛壳的距离近,这样会加大风压,而将百叶窗 2200 设计成重量轻的薄型结构, 由公知技术的 1. 2mm的厚度变更为 0. 8mm的厚 度, 外表面还设有格子形状的加强筋的话, 在蜗牛壳吹出的风的作用下, 百叶窗 2200更加容易被打开, 也就是说, 有利于降低噪音。
图 10是本发明的百叶窗的另一种实施例的示意图。 如图 10所示, 导 风结构 2100上设有的百叶窗 2200靠向室外侧的下表面 2210和靠向室内 侧的上表面 2220设有片状的导风片 2230。 通过上述结构, 从装有风机的
蜗牛壳吹出的风, 在百叶窗 2200上设有的导风片 2230的作用下, 风能够 在不产生乱流的情况下顺利地通过百叶窗 2200,确保风量,提高产品性能 的稳定性。
图 11A、 11B为本发明的导风结构安装入公知技术金属接头的示意图。 如图 11A所示, 本发明还在导风结构 2100的周围设置复数个卡位 2140, 卡位 2140包括在接头 2000外周围设置复数弹性的卡爪 2141, 卡爪 2141 的前端设有突块 2142, 在公知技术金属接头 4000的出风口壁上相应设有 复数个开口 4010。当将接头 2000卡入金属接头 4000内时, 复数个弹性卡 爪 2141的前端设有的突块 2142具有引导作用, 顺着突块 2142沿着金属 接头 4000的内壁, 使接头 2000顺畅的卡入金属接头 4000内, 当将接头 2000卡入到金属接头 4000的一定位置时, 卡爪 2141前端的突块 2142卡 入金属接头 4000出风口的开口 4010内, 通过卡爪 2141的弹性作用, 接 头 2000被确实地固定在金属接头 4000内。通过将本发明新设计的导风结 构 2100固定在金属接头 4000内部, 达到充分共用现有部品的目的, 金属 加树脂的双层接头结构, 提高产品美观和品位。
以上本发明的导风结构 2100,与公知技术的金属接头 1500相比,风机 的出风口的形状可以在更短的距离内向管道的形状转换。 也就是说, 在维 持公知技术金属接头 1500全长的同时, 风机出风口的形状通过导风结构 2100向管道形状转换,与公知技术相比,位于导风结构 2100的出风口 2120 的开口端 (室外侧) 的百叶窗 2200可以更偏向换气扇本体侧设置。 因此, 和公知技术一样安装管道时, 如图 11B所示, 即使使用螺丝 1300, 螺丝 1300也不会碰到百叶窗 2200。 在本实施例中, 百叶窗 2200的位置与公知 技术相比, 可以更靠向室内侧设置大约 30m m。 由此, 提高产品性能的稳 定性。 而且上述接头的长度 L1小于公知技术金属接头的长度 L2。 当安装 者用螺丝 1300把管道固定在金属接头 4000上时,即使因螺丝 1300较长而 突出于金属接头 4000的壁时,螺丝 1300也不会与接头相干涉而使设置在 其内的百叶窗 2200无法打开。 可以避免因换气扇安装施工时打螺丝而导 致百叶窗 2200不能开闭的情况发生,提高产品性能的稳定性以及施工性。
Claims
1、 一种换气扇, 包括: 设置于箱状本体的多翼送风机, 以及和该多 翼送风机出风口相连接的接头,其特征在于, 上述多翼送风机由两块相对 的卷形状的卷板和被该卷板相夹连接的蜗牛壳板所构成, 第一卷板上设有 多翼送风机总进风口, 接头的出风口的中心线靠第二卷板侧偏置。
2、 根据权利要求 1 所述的换气扇, 其特征在于: 上述接头具有方形 进风口和圆形出风口, 上述进风口的外侧边与上述第二卷板的端面一致设 置, 接头出风口在上述进风口的投影面内, 并与上述外侧边相连接。
3、 根据权利要求 1所述的换气扇, 其特征在于: 在多翼送风机和接 头形成的扩大部和接头出风口之间的风路中, 在蜗牛壳板和接头处形成使 气流方向弯曲的曲折部。
4、 根据权利要求 3所述的换气扇, 其特征在于: 在离蜗牛壳板的扇 叶外侧最近的位置设置舌部;
在蜗牛壳舌部和与其相对面相连结的部分以及多翼送风机的出风口 部分, 曲折部由使气流方向弯曲的连续的第一弯曲部和第二弯曲部所形 成。
5、 根据权利要求 3所述的换气扇, 其特征在于:
延长所述的扩大部直至上述舌部的对面侧, 设有蜗牛壳板的第一直线 部;
将上述舌部的对面侧向换气扇的出风口直线状延长, 设有蜗牛壳板的 第二直线部;
在蜗牛壳的外周部的第一直线部和第二直线部构成风路向内侧弯曲 的第一弯曲部, 第二直线部和接头的圆形部构成风路向外侧弯曲的第二弯 曲部;
上述第一弯曲部和第二弯曲部构成所述的曲折部。
6、 根据权利要求 3所述的换气扇, 其特征在于- 在离蜗牛壳板的扇叶外侧最近的位置设置舌部;
延长所述的扩大部直至上述舌部的对面侧, 设有蜗牛壳板的第一直线 部; 将上述舌部的对面侧向换气扇的出风口直线状延长, 设有蜗牛壳板的 第二直线部;
上述舌部向换气扇的出风口直线延长, 设有蜗牛壳板的第三直线部; 在蜗牛壳的外周部的第一直线部和第二直线部构成风路向内侧弯曲 的第一弯曲部, 第二直线部和接头的圆形部构成风路向外侧弯曲的第二弯 曲部, 第三直线部和接头的圆形部构成风路向内侧弯曲的第三弯曲部; 上述第一弯曲部、 第二弯曲部和第三弯曲部构成所述的曲折部。
7、 根据权利要求 3所述的换气扇, 其特征在于: 延长所述的扩大部 直至上述舌部的对面侧, 设有蜗牛壳板的第一直线部;
将上述舌部的对面侧向换气扇的出风口直线状延长, 设有蜗牛壳板的 第二直线部;
在蜗牛壳的外周部的第一直线部和第二直线部构成风路向内侧弯曲 的第一弯曲部, 第二直线部和接头的圆形部构成风路向外侧弯曲的第二弯 曲部;
第二弯曲部比第一弯曲部的弯曲度小。
8、 根据权利要求 1所述的换气扇, 其特征在于: 所述的接头包括: 导风结构和安装在导风结构内部的百叶窗, 导风结构分为进风口和出风口 两部分, 进风口和出风口之间由侧壁平滑过渡连接, 所述的进风口的形状 与多翼送风机的出风口形状相同, 构成连接的直通型结构; 所述的百叶窗 为配合出风口形状的从中间向两侧弯曲的弧形结构; 所述的百叶窗固定在 出风口靠室内侧处。
9、 根据权利要求 8所述的换气扇, 其特征在于: 所述的导风结构的 出风口在上述导风结构的进风口的投影面内, 为使其与上述进风口的一边 相连接而偏设。
10、 根据权利要求 8所述的换气扇, 其特征在于: 所述的导风结构的 出风口的中心轴相对于所述的导风结构的进风口的中心轴, 偏向进风口的 一边设置。
11、 根据权利要求 8所述的换气扇, 其特征在于: 所述的导风结构由 树脂一体注塑而成。
12、 根据权利要求 8所述的换气扇, 其特征在于: 所述的导风结构的 周围设置卡位, 用于将该接头固定在金属接头的内部。
13、 根据权利要求 8所述的换气扇, 其特征在于: 所述导风结构的周 围设置卡位, 所述的卡位为在接头外周围设置复数个弹性的卡爪, 卡爪的 前端设有突块, 在所述的金属接头的出风口壁上相应设有复数个开口。
14、 根据 ¾ (利要求 8所述的换气扇, 其特征在于: 所述的百叶窗为薄 型结构, 靠向室外侧的下表面和靠向室内侧的上表面设有片状的导风片。
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US10047756B2 (en) | 2018-08-14 |
US20130072105A1 (en) | 2013-03-21 |
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