CN1955485A - Crossflow fan - Google Patents
Crossflow fan Download PDFInfo
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- CN1955485A CN1955485A CNA2006101428375A CN200610142837A CN1955485A CN 1955485 A CN1955485 A CN 1955485A CN A2006101428375 A CNA2006101428375 A CN A2006101428375A CN 200610142837 A CN200610142837 A CN 200610142837A CN 1955485 A CN1955485 A CN 1955485A
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- Prior art keywords
- impeller
- groove
- flow fan
- cross flow
- grooves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
- F24F1/0025—Cross-flow or tangential fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
- F24F1/0057—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in or on a wall
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
Abstract
The object of the present invention is to obtain a crossflow fan with high transporting wind capability and able to reduce the noise. The present inventive crossflow fan includes: an impeller; and a tongue provided along a portion of the outer circumference of the impeller. The tongue is provided with a plurality of slits such that a cross-section of the tongue on a surface perpendicular to a circumferential direction of the impeller is formed in a comb shape. At least one slit of the plurality of slits is formed in a different shape, and the depth on the direction of impeller radius.
Description
Technical field
The present invention relates to a kind of cross flow fan that is used for aircondition etc.
Background technique
At the cross flow fan that is used for aircondition or air curtain etc.,, preferably be provided with fan rotor (impeller) and the distance that is made as along the external diameter of fan rotor between the tongue of specified altitude little in order to improve its wind pushing performance.But, in this case, sucking the moment that move in the zone from tongue region to air at the fin (blade) of fan rotor, the fin ambient air flows and changes sharp, thereby causes the noise of tongue region end to become big.
Therefore, in cross flow fan in the past, in order to prevent to suck the moment that move in the zone from tongue region to air at the fin of fan rotor, air-flow around the fin changes sharp, and the slot part of comb shape is set in the tongue upper end portion, along with sucking regional approaching to above-mentioned air from tongue region, it is big that the width of this comb shape slot part becomes, and between the rotor of the left and right sides of fan rotor, make its change in depth (for example, with reference to patent documentation 1).
No. 3248466 communique of (patent documentation 1) Japan Patent (the 2nd～3rd page, Fig. 3)
Summary of the invention
But, in such cross flow fan, because the length of the tongue on the external diameter direction of fan rotor (impeller) shortens, so, become many from discharging effluent to the flow that spills of suction side.Therefore, the pressure difference of suction side and discharge side diminishes, thereby in the inner round whirlpool instability that produces of cross flow fan.So, under the low situation of flow or on filter, have the situation of dust accretion inferior, be easy to generate with former and blow out the reverse air-flow of air-flow (adverse current), thereby have the problem that wind pushing performance reduces and noise increases.
The present invention makes in order to solve the above problems, and its objective is the cross flow fan that obtains a kind of wind pushing performance height and can reduce noise.
Cross flow fan of the present invention, has impeller and along the part of the periphery of impeller and the tongue that is provided with, and, so that tongue is provided with a plurality of grooves (ス リ Star ト), the shape difference of at least a portion groove in a plurality of grooves in the mode that becomes comb shape perpendicular to the section on the face of the circumferencial direction of impeller at tongue.
Utilize the present invention, can provide a kind of wind pushing performance high and can reduce the cross flow fan of noise.
Description of drawings
Fig. 1 is to use the sectional drawing of aircondition of the cross flow fan of embodiment of the present invention 1.
Fig. 2 is the sectional drawing of protuberance of the cross flow fan of embodiment of the present invention 1.
Fig. 3 is the stereogram of protuberance of the cross flow fan of embodiment of the present invention 1.
Fig. 4 is the sectional drawing of protuberance of the cross flow fan of embodiment of the present invention 1.
Fig. 5 is the sectional drawing of protuberance of the cross flow fan of embodiment of the present invention 2.
Fig. 6 is the stereogram of protuberance of the cross flow fan of embodiment of the present invention 2.
Fig. 7 is the stereogram of protuberance of the cross flow fan of embodiment of the present invention 2.
Fig. 8 is the stereogram of protuberance of the cross flow fan of embodiment of the present invention 3.
Fig. 9 is the stereogram of protuberance of the cross flow fan of embodiment of the present invention 4.
Figure 10 is the sectional drawing of protuberance of the cross flow fan of embodiment of the present invention 4.
Figure 11 is the stereogram of protuberance of the cross flow fan of embodiment of the present invention 4.
Figure 12 is the sectional drawing of protuberance of the cross flow fan of embodiment of the present invention 4.
Figure 13 is the sectional drawing of protuberance of the cross flow fan of embodiment of the present invention 4.
Embodiment
Mode of execution 1
Fig. 1 is to use the sectional drawing of aircondition of the cross flow fan of embodiment of the present invention 1.In the drawings, the parts that indicate same-sign are represented identical or suitable with it parts, and this situation is all like this in whole specification.And the form of represented structural element is an illustration in specification full text, is not limited to these narrations.
In Fig. 1, the front at the housing 1 of aircondition is provided with front suction and goes into grid 2, sucks grid 3 in the above above being provided with.In housing 1, along front suction go into grid 2 and above suction grid 3, be provided with the filter 4 that is used for removing the dust that air contains, along filter 4 dispose to front suction go into grid 2 and above 3 inhaled airs of suction grid heat exchanger 5 of carrying out heat exchange.In the front lower of housing 1, go into grid 2 with front suction and conjointly be provided with protuberance 6, in the inboard, the back side of housing 1, be provided with the guider 7 of the air flows in the guiding aircondition.
Between heat exchanger 5 and guider 7, the running shaft 13 that is provided with cross flow fan is the impeller 12 that the center rotates.Impeller 12 by running shaft 13, be fixed on the two end part of running shaft 13 and a plurality of discoideus side plate 14 midway thereof, be the radial blade 15 that is fixed on the outer circumferential side of this side plate 14 and constitute.At this, cross flow fan has impeller 12, guider 7 and protuberance 6.
In the bottom of housing 1, between protuberance 6 and guider 7, be provided with the blow-off outlet 8 that air is blown out to the aircondition outside.Near the outlet of blow-off outlet 8, be provided with the left and right sides change of the wind plate 9 that is connected in protuberance 6 and air stream is changed on running shaft 13 directions.Equally, near the outlet of blow-off outlet 8, be provided with the plate of change of the wind up and down 10 that air stream is changed on above-below direction.In addition, in the inside, the back side of housing 1, the back side of guider 7, dispose the pipe arrangement 11 that the refrigerant of heat exchanger 5 flows through.
Fig. 2 is the sectional drawing of protuberance of the cross flow fan of embodiment of the present invention 1, and Fig. 3 is the stereogram of protuberance of the cross flow fan of embodiment of the present invention 1.In detail, Fig. 2 (a) is that the protuberance of cross flow fan of embodiment of the present invention 1 is at the sectional drawing perpendicular to the face place of running shaft, Fig. 2 (b) is that the protuberance of cross flow fan of embodiment of the present invention 1 is at the sectional drawing of locating perpendicular to the face (being the face that comprises the running shaft 13 of impeller 12, is the E-E section shown in Fig. 2 (a)) of the circumferencial direction of impeller.
As Fig. 2 and shown in Figure 3, protuberance 6 has wind path formation portion 17 and tongue 18.Wind path formation portion 17 constitutes the part of the wind path in the airconditions, and is also used as water droplet that reception drips from heat exchanger 5 and the Drainage Division of carrying out draining.Tongue 18 is along the part setting of the periphery of impeller 12, and guarantees the suction side B that is produced by the rotation of impeller 12 and discharge pressure difference between the side A, so that cross flow fan acquires high wind pushing performance.In addition, so that tongue 18 (is the face that comprises the running shaft 13 of impeller 12 at the face perpendicular to the circumferencial direction of impeller 12, being the E-E section shown in Fig. 2 (a)) section of locating becomes the mode of comb shape, and a plurality of concavity grooves of arranging on running shaft 13 directions of impeller 12 21 are set in tongue 18.This comb shape has base portion and a plurality of protuberance that is connected in same one side of this base portion.The shape difference of a part of groove 21 in a plurality of grooves 21, and, at discharge side A, along the depth H difference on the radial direction of impeller 12.The shape of remaining groove 21 is identical, and, discharging side A, equating along the depth H on the radial direction of impeller 12.Part groove 21 both can change brokenly in the depth H of discharging side A, also can change regularly.
At this, in the cross flow fan shown in the mode of execution 1, needn't make all grooves 21 shape differences, as long as make at least a portion groove 21 in a plurality of grooves 21 the shape difference, make the depth H along the radial direction of impeller 12 of discharging side A different.In addition, the shape of all grooves 21 is had nothing in common with each other, the depth H of all grooves 21 on the radial direction of the impeller 12 of discharging side A had nothing in common with each other.And, in all grooves 21, in the length L on the circumferencial direction of impeller 12, equating between width D on running shaft 13 directions and adjacent groove 21 apart from T.
In the cross flow fan shown in the present embodiment 1, so that tongue 18 is in the mode that becomes comb shape perpendicular to the section on the face of the circumferencial direction of impeller 12, at tongue 18 a plurality of grooves 21 are set, and, the depth H difference of at least a portion groove 21 in a plurality of grooves 21 on the radial direction of impeller 12.Therefore, the pressure loss in each groove 21 is changed, can change each groove 21 positions, from discharging the flow that spill air-flow and the direction of side (high pressure side) A towards suction side (low-pressure side) B.So, in each groove 21, spill the interference position difference between air-flow and the blade 15, therefore, the relevant area of pressure oscillation (area with zone of simultaneity) reduces, and can keep the noise that reduces cross flow fan under the state of high wind pushing performance.
In addition, because the flow difference that spills air-flow of each groove 21 positions, so, sucking air-flow and spill the air-flow interflow, the intensity of the shearing turbulent flow of the air-flow of inflow impeller 12 and position are in the circumferencial direction difference of impeller 12.Therefore, the relevant area of pressure oscillation (area with zone of simultaneity) reduces, thereby can reduce noise.
And in cross flow fan, near the two end part and side plate midway 14 of running shaft 13 directions that are arranged at impeller 12, flow reduces.When the flow that spills air-flow of this low flow volume region is big, be easy to generate adverse current, the tendency that exists draft capacity to descend.Therefore, in the few zone of flow that connects impeller 12, be arranged on the shallow groove 21 of depth H of discharging side A, in the big zone of flow, be arranged on the dark groove 21 of depth H of discharging side A, can provide thus on a kind of any position of running shaft 13 directions at impeller 12 can not cause that wind pushing performance reduces and can not increase the cross flow fan of noise by adverse current.That is to say, near the two end part and side plate midway 14 of running shaft 13 directions that are arranged at impeller 12, be provided with shallowly in the depth H of discharging side A herein groove 21, be provided with to such an extent that deeply get final product in the depth H of discharging side A the groove 21 that is located at the zone outside this.
Fig. 4 is that the protuberance of cross flow fan of embodiment of the present invention 1 is perpendicular to the sectional drawing on the face of the circumferencial direction of impeller.
Among Fig. 2 (b), showing is being rectangular groove 21 perpendicular to the section shape on the face of the circumferencial direction of impeller 12.But the section shape of groove 21 also can be an Any shape, can be the triangle shown in Fig. 4 (a), also can be trapezoidal etc. shown in Fig. 4 (b).In addition, also can make up multiple section shape.Similarly, also can be Any shape perpendicular to the section shape on the face of the radial direction of impeller, can be rectangular, triangle, trapezoidal etc., also can make up multiple section shape.And,, the pressure loss of each groove 21 is changed by making up multiple section shape.
In the cross flow fan shown in this mode of execution 1, in all grooves 21, that being set at apart from T between width D on the length L on the circumferencial direction of impeller 12, running shaft 13 directions and the adjacent groove 21 is equal.But, between width D on the length L on the circumferencial direction of impeller 12, running shaft 13 directions and the adjacent groove 21 apart from T, also can have nothing in common with each other.
Mode of execution 2
In mode of execution 1, show the aircondition of the different cross flow fan of the depth H of at least a portion groove on the radial direction of impeller 12 used in a plurality of grooves.In embodiments of the present invention 2, show the aircondition of the different cross flow fan of the length L of at least a portion groove on the circumferencial direction of impeller 12 used in a plurality of grooves.
Fig. 5 is that the protuberance of cross flow fan of embodiment of the present invention 2 is perpendicular to the sectional drawing on the face of running shaft.Fig. 6 is the stereogram of protuberance of the cross flow fan of embodiment of the present invention 2.
As Fig. 5 and shown in Figure 6, so that tongue 18 is set side by side with a plurality of grooves 22 in the mode that becomes comb shape perpendicular to the section on the face (face that comprises the running shaft 13 of impeller 12) of the circumferencial direction of impeller 12 on running shaft 13 directions of impeller 12 in tongue 18.The shape difference of a part of groove 22 in a plurality of grooves 22, and, the length L difference on the circumferencial direction of impeller 12.The shape of remaining groove 22 is identical, and the length L on the circumferencial direction of impeller 12 equates.Other structure and function are identical with the aircondition shown in the mode of execution 1.
At this, in the cross flow fan shown in the mode of execution 2, the shape of all grooves 22 is had nothing in common with each other, as long as make at least a portion groove 22 in a plurality of grooves 22 the shape difference, make the length L on the circumferencial direction of impeller 12 different.In addition, the shape of all grooves 22 is had nothing in common with each other, the length L of all grooves 22 on the circumferencial direction of impeller 12 had nothing in common with each other.And, in all grooves 22, equating between width D on the depth H on the radial direction of impeller 12, running shaft 13 directions and the adjacent groove 22 apart from T.
In the cross flow fan shown in the present embodiment 2, so that tongue 18 is provided with a plurality of grooves 22 in the mode that becomes comb shape perpendicular to the section on the face of the circumferencial direction of impeller 12 at tongue 18.The length L difference of at least a portion groove 22 in a plurality of grooves 22 on the circumferencial direction of impeller 12.Therefore, the pressure loss in each groove 22 is changed, can change each groove 22 positions, from discharging the flow that spill air-flow and the direction of side (high pressure side) A towards suction side (low-pressure side) B.So, in each groove 22, spill the interference position difference between air-flow and the blade 15, therefore, the relevant area of pressure oscillation (area with zone of simultaneity) reduces, and can keep the noise that reduces cross flow fan under the state of high wind pushing performance.
In addition, because the flow difference that spills air-flow of each groove 22 positions, so, sucking air-flow and spill the air-flow interflow, the intensity of the shearing turbulent flow of the air-flow of inflow impeller 12 and position are in the circumferencial direction difference of impeller 12.Therefore, the relevant area of pressure oscillation (area with zone of simultaneity) reduces, thereby can reduce noise.
Fig. 7 is the stereogram of protuberance of the cross flow fan of embodiment of the present invention 2.
In cross flow fan shown in Figure 6, on running shaft 13 directions, the length L of groove 22 on the circumferencial direction of impeller 12 changed brokenly.But, as shown in Figure 7,, also can obtain the effect identical with irregular situation even the length L of groove 22 on the circumferencial direction of impeller 12 changed regularly.
In addition, in the few zone of flow that connects impeller 12, be arranged on the short groove 22 of length L on the circumferencial direction of impeller 12, in the big zone of flow, be arranged on the long groove 22 of length L on the circumferencial direction of impeller 12, can provide thus on a kind of any position of running shaft 13 directions at impeller 12 can not cause that draft capacity reduces and can not increase the cross flow fan of noise by adverse current.That is to say, near the two end part and side plate midway 14 of running shaft 13 directions that are arranged at impeller 12, be provided with the length L of herein groove 22 short, will be provided with in the length L of the groove 22 in addition zone long getting final product.
In the cross flow fan shown in this mode of execution 2, in all grooves 22, be set to equate apart from T between width D on the depth H on the radial direction of impeller 12, running shaft 13 directions and the adjacent groove 22.But, also can make having nothing in common with each other between depth H on the radial direction of impeller 12, the width D on running shaft 13 directions and the adjacent groove 22 apart from T.
Mode of execution 3
In mode of execution 1, show the aircondition of the different cross flow fan of the depth H of at least a portion groove on the radial direction of impeller 12 used in a plurality of grooves.In embodiment of the present invention 3, show the aircondition of the different cross flow fan of the width D of at least a portion groove on running shaft 13 directions of impeller 12 used in a plurality of grooves.
Fig. 8 is the stereogram of protuberance of the cross flow fan of embodiment of the present invention 3.
As shown in Figure 8, so that tongue 18 is set up in parallel a plurality of grooves 23 in the mode that becomes comb shape perpendicular to the section on the face (face that comprises the running shaft 13 of impeller 12) of the circumferencial direction of impeller 12 on running shaft 13 directions of impeller 12 in tongue 18.The shape difference of a part of groove 23 in a plurality of grooves 23, and, the width D difference on running shaft 13 directions of impeller 12.The shape of remaining groove 23 is identical, and the width D on running shaft 13 directions of impeller 12 equates.Other structure and function are the same with the aircondition shown in the mode of execution 1.
At this, in the cross flow fan shown in the mode of execution 3, the shape of all grooves 23 is had nothing in common with each other, as long as make at least a portion groove 23 in a plurality of grooves 23 the shape difference, make the width D on running shaft 13 directions of impeller 12 different.In addition, the shape of all grooves 23 is had nothing in common with each other, the width D of all grooves 23 on running shaft 13 directions of impeller 12 had nothing in common with each other.And, in all grooves 23, equating between the depth H on the radial direction of impeller 12, the length L on the circumferencial direction and the adjacent groove 23 apart from T.
In the cross flow fan shown in the present embodiment 3, so that tongue 18 is provided with a plurality of grooves 23 in the mode that becomes comb shape perpendicular to the section on the face of the circumferencial direction of impeller 12 at tongue 18.The width D difference of at least a portion groove 23 in a plurality of grooves 23 on running shaft 13 directions of impeller 12.Therefore, the pressure loss in each groove 23 is changed, can make each groove 23 positions, change towards flow that spills air-flow and the direction of suction side (low-pressure side) B from discharging side (high pressure side) A.Therefore, in each groove 23, spill the interference position difference between air-flow and the blade 15,, can keep the noise that reduces cross flow fan under the state of high wind pushing performance so the relevant area of pressure oscillation (area with zone of simultaneity) reduces.
In addition, because the flow difference that spills air-flow of each groove 23 positions, so, sucking air-flow and spill the air-flow interflow, the intensity of the shearing turbulent flow of the air-flow of inflow impeller 12 and position are in the circumferencial direction difference of impeller 12.Therefore, the relevant area of pressure oscillation (area with zone of simultaneity) reduces, thereby can reduce noise.
And the cross flow fan shown in the mode of execution 3 is compared with the cross flow fan shown in mode of execution 1 and the mode of execution 2, and the thickness of the material of formation tongue 18 is even, so, be shaped easily.
In this mode of execution 3, as shown in Figure 8, on running shaft 13 directions, the width D of groove 23 on running shaft 13 directions changed brokenly.But, even, also can obtain the effect identical with irregular situation in that the width D of groove 23 on running shaft 13 directions changed regularly.
In addition, in the few zone of flow that connects impeller 12, be arranged on the narrow groove 23 of width D on running shaft 13 directions, in the big zone of flow, be arranged on the wide groove 23 of width D on running shaft 13 directions, can provide thus on a kind of arbitrary position of running shaft 13 directions at impeller 12 can not cause that wind pushing performance reduces and can not increase the cross flow fan of noise by adverse current.That is to say, near the two end part and side plate midway 14 of running shaft 13 directions that are arranged at impeller 12, be provided with the width D of herein groove 23 narrow, will the width D of the groove 23 in zone in addition be provided with wide getting final product.
In the cross flow fan shown in the present embodiment 3, in all grooves 23, be set to equate apart from T between the depth H on the radial direction of impeller 12, the length L on the circumferencial direction and the adjacent groove 23.But, also can have nothing in common with each other between the depth H on the radial direction of impeller 12, the length L on the circumferencial direction and the adjacent groove 23 apart from T.
Mode of execution 4
In mode of execution 1, show the aircondition of the different cross flow fan of the depth H of at least a portion groove on the radial direction of impeller 12 used in a plurality of grooves.In embodiments of the present invention 4, show the aircondition that at least a portion groove that uses in a plurality of grooves is provided with the cross flow fan of flank.
Fig. 9 is the stereogram of protuberance of the cross flow fan of embodiment of the present invention 4.Figure 10 is the sectional drawing of protuberance on the face vertical with running shaft of the cross flow fan of embodiment of the present invention 4.
As Fig. 9 and shown in Figure 10, so that tongue 18 is set up in parallel a plurality of grooves 24 in the mode that becomes comb shape perpendicular to the section on the face (face that comprises the running shaft 13 of impeller 12) of the circumferencial direction of impeller 12 on running shaft 13 directions of impeller 12.In a plurality of grooves 24, be provided with in the mode of the part of filling slot 24 and be used for the flank 25 that blocks drain goes out air-flow.In addition, the shape difference of a part of groove 24 in a plurality of grooves 24, and, the position difference of flank 25 on the circumferencial direction of impeller 12.Remaining groove 24 shapes are identical, and the position of flank 25 on the circumferencial direction of impeller 12 is identical.Other structures and function are identical with the aircondition shown in the mode of execution 1.
At this, in the cross flow fan shown in the mode of execution 4, the shape of all grooves 24 is had nothing in common with each other, as long as make at least a portion groove 24 in a plurality of grooves 24 the shape difference, make the position of flank 25 on the circumferencial direction of impeller 12 different.In addition, the shape of all grooves 24 is had nothing in common with each other, the position of flank 25 on the circumferencial direction of impeller 12 of all grooves 24 had nothing in common with each other.And, in all grooves 24, identical between width D on the depth H on the radial direction of impeller 12, the length L on the circumferencial direction, running shaft 13 directions and the adjacent groove 24 apart from T.
In the cross flow fan shown in the present embodiment 4, so that tongue 18 is provided with a plurality of grooves 24 in the mode that becomes comb shape perpendicular to the section on the face of the circumferencial direction of impeller 12 at tongue 18.These a plurality of grooves 24 have flank 25, and the flank 25 of the groove 24 of at least a portion is in the position of the circumferencial direction of impeller 12 difference.Therefore, the pressure loss in each groove 24 is changed, can change each groove 24 positions, from discharging the flow that spill air-flow and the direction of side (high pressure side) A towards suction side (low-pressure side) B.So, in each groove 24, spill the interference position difference between air-flow and the blade 15, therefore, the relevant area of pressure oscillation (area with zone of simultaneity) reduces, and can keep the noise that reduces cross flow fan under the state of high wind pushing performance.
In addition, because the flow difference that spills air-flow of each groove 24 positions, so, sucking air-flow and spill the air-flow interflow, the intensity of the shearing turbulent flow of the air-flow of inflow impeller 12 and position are in the circumferencial direction difference of impeller 12.Therefore, the relevant area of pressure oscillation (area with zone of simultaneity) reduces, thereby can reduce noise.
And, in the aircondition shown in this mode of execution 4, the moisture that produces in the time of not only can keeping freezing, and also can utilize flank 25 to keep with the surface tension of groove 24, thus can improve water retaining capacity, have and be difficult to produce the effect that dewfall is dripped.
Figure 11 is the stereogram of protuberance of the cross flow fan of embodiment of the present invention 4.
In this mode of execution 4, as shown in Figure 9, the position of flank 25 on the circumferencial direction of impeller 12 changed brokenly.But, as shown in figure 11,, also can obtain and the identical effect of situation that changes brokenly even the location rule ground of flank 25 on the circumferencial direction of impeller 12 is changed.
Figure 12 is that the protuberance of cross flow fan of embodiment of the present invention 4 is perpendicular to the sectional drawing on the face of running shaft.
In Fig. 9 and cross flow fan shown in Figure 10, make the change in location of the flank 25 in a plurality of grooves 24, thereby change flow and the direction that spills air-flow.But, shown in Figure 12 (a) and Figure 12 (b),, change the angle of flank 25 even the flank 25 of all grooves 24 is arranged on the identical position, thereby change the flow and the direction that spill air-flow, also can obtain and Fig. 9 and the identical effect of cross flow fan shown in Figure 10.
Figure 13 is the sectional drawing of protuberance of the cross flow fan of embodiment of the present invention 4.In detail, Figure 13 (a) is that the protuberance of cross flow fan of embodiment of the present invention 4 is perpendicular to the sectional drawing in the face of running shaft, Figure 13 (b) is that the protuberance of cross flow fan of embodiment of the present invention 4 is perpendicular to the sectional drawing in the face (being the face that comprises running shaft, is the F-F section shown in Figure 13 (a)) of the circumferencial direction of the impeller of cross flow fan.
In Figure 13, same with flank shown in Figure 12, the flank 25 of all grooves 24 is arranged on same position, the height H r of flank 25 is changed, thereby change flow and the direction that spills air-flow.Even the flank 25 of a plurality of grooves 24 is arranged on same position, change the height H r of flank 25, also can obtain and Fig. 9 and the identical effect of cross flow fan shown in Figure 10.
And, flank 25 needn't all be set in all grooves 24, can only in the groove 24 of a part, flank 25 be set.In addition, when in the groove 24 only flank 25 being set, in the groove 24 that is provided with this flank 25, can make position, the angle and highly all identical of flank 25 on the circumferencial direction of impeller 12 in a part.Because only the groove 24 of some has flank 25, so, can change the pressure loss according to having or not of flank 25, can make each groove 24 positions, change towards flow that spills air-flow and the direction of suction side (low-pressure side) B from discharging side (high pressure side) A.Therefore, in each groove 24, spill the interference position difference between air-flow and the blade 15,, can keep the noise that reduces cross flow fan under the state of high wind pushing performance so the relevant area of pressure oscillation (area with zone of simultaneity) reduces.In addition, because the flow difference that spills air-flow of each groove 24 positions, so, sucking air-flow and spill the air-flow interflow, the intensity of the shearing turbulent flow of the air-flow of inflow impeller 12 and position are different on the circumferencial direction of impeller 12.Therefore, the relevant area of pressure oscillation (area with zone of simultaneity) reduces, thereby can reduce noise.So, in cross flow fan shown in this mode of execution 4, have at least a part of groove 24 to have flank 25 and get final product.
In this mode of execution 4, in all grooves 24, that being set at apart from T between the depth H on the radial direction of impeller 12, length L, width D on running shaft 13 directions and the adjacent groove 24 on the circumferencial direction is identical.But, also can have nothing in common with each other between width D on the depth H on the radial direction of impeller 12, the length L on the circumferencial direction, running shaft 13 directions and the adjacent groove 24 apart from T.
Claims (8)
1, a kind of cross flow fan has impeller and along the part of the periphery of above-mentioned impeller and the tongue that is provided with,
So that above-mentioned tongue is provided with a plurality of grooves in the mode that becomes comb shape perpendicular to the section on the face of the circumferencial direction of above-mentioned impeller at above-mentioned tongue,
The shape difference of at least a portion groove in above-mentioned a plurality of groove.
2, cross flow fan as claimed in claim 1 is characterized in that, the degree of depth difference of at least a portion groove on the radial direction of impeller.
3, cross flow fan as claimed in claim 1 is characterized in that, the length difference of at least a portion groove on the circumferencial direction of impeller.
4, cross flow fan as claimed in claim 1 is characterized in that, the width difference of at least a portion groove on the running shaft direction of impeller.
5, cross flow fan as claimed in claim 1 is characterized in that, at least a portion groove has the flank of a part of filling above-mentioned groove.
6, cross flow fan as claimed in claim 5 is characterized in that, the position difference of the flank of at least a portion groove on the circumferencial direction of impeller.
7, cross flow fan as claimed in claim 5 is characterized in that, the height difference of the flank of at least a portion groove.
8, cross flow fan as claimed in claim 5 is characterized in that, the angle difference of the flank of at least a portion groove.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005314751 | 2005-10-28 | ||
| JP2005314751A JP2007120880A (en) | 2005-10-28 | 2005-10-28 | Cross flow fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1955485A true CN1955485A (en) | 2007-05-02 |
| CN100462564C CN100462564C (en) | 2009-02-18 |
Family
ID=37685820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101428375A Active CN100462564C (en) | 2005-10-28 | 2006-10-27 | Crossflow fan |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1780475B1 (en) |
| JP (1) | JP2007120880A (en) |
| CN (1) | CN100462564C (en) |
| ES (1) | ES2604201T3 (en) |
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| CN101517321B (en) * | 2006-09-29 | 2011-09-28 | 大金工业株式会社 | Air conditioner |
| CN102454635A (en) * | 2010-10-26 | 2012-05-16 | 珠海格力电器股份有限公司 | Cross-flow fan |
| CN103851692A (en) * | 2012-11-28 | 2014-06-11 | 珠海格力电器股份有限公司 | Indoor unit of air conditioner |
| CN103868149A (en) * | 2012-12-13 | 2014-06-18 | 三菱电机株式会社 | Indoor unit of air conditioner |
| CN104074803A (en) * | 2013-03-26 | 2014-10-01 | 珠海格力电器股份有限公司 | Cross-flow fan and air conditioner with same |
| CN104981612A (en) * | 2013-02-12 | 2015-10-14 | 大金工业株式会社 | Air conditioner |
| CN105757925A (en) * | 2016-05-11 | 2016-07-13 | 广东美的制冷设备有限公司 | Air duct assembly of air conditioner and air conditioner |
| CN105971909A (en) * | 2016-05-05 | 2016-09-28 | 邓林生 | Cross flow induced draft device and cross flow electric appliance |
| CN107975868A (en) * | 2016-10-21 | 2018-05-01 | 三星电子株式会社 | Air-conditioning |
| CN109790842A (en) * | 2016-09-30 | 2019-05-21 | 大金工业株式会社 | The indoor units of cross-flow fan and the air-conditioning device including the cross-flow fan |
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| JPH01167494A (en) * | 1987-12-23 | 1989-07-03 | Hitachi Ltd | Crossflow fan |
| KR930006876B1 (en) * | 1989-06-23 | 1993-07-24 | 가부시끼 가이샤 히다찌세이사꾸쇼 | Air conditioner employing cross-flow fan |
| JPH0752016B2 (en) * | 1990-07-24 | 1995-06-05 | ダイキン工業株式会社 | Air conditioner indoor unit |
| TW328105B (en) * | 1996-08-23 | 1998-03-11 | Mitsubishi Electric Corp | Indoor machine for air conditioning and method for controlling its wind direction |
| JP3248466B2 (en) * | 1997-10-14 | 2002-01-21 | ダイキン工業株式会社 | Air conditioner |
| JP3649567B2 (en) * | 1998-01-12 | 2005-05-18 | 三菱電機株式会社 | Once-through fan |
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| WO2004029463A1 (en) * | 2002-09-24 | 2004-04-08 | Toshiba Carrier Corporation | Cross flow fan and air conditioner with the fan |
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- 2005-10-28 JP JP2005314751A patent/JP2007120880A/en active Pending
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2006
- 2006-10-27 EP EP06022505.9A patent/EP1780475B1/en active Active
- 2006-10-27 CN CNB2006101428375A patent/CN100462564C/en active Active
- 2006-10-27 ES ES06022505.9T patent/ES2604201T3/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101517321B (en) * | 2006-09-29 | 2011-09-28 | 大金工业株式会社 | Air conditioner |
| CN102454635A (en) * | 2010-10-26 | 2012-05-16 | 珠海格力电器股份有限公司 | Cross-flow fan |
| CN103851692A (en) * | 2012-11-28 | 2014-06-11 | 珠海格力电器股份有限公司 | Indoor unit of air conditioner |
| CN103868149B (en) * | 2012-12-13 | 2017-04-05 | 三菱电机株式会社 | The indoor set of air conditioner |
| CN103868149A (en) * | 2012-12-13 | 2014-06-18 | 三菱电机株式会社 | Indoor unit of air conditioner |
| US9879868B2 (en) | 2012-12-13 | 2018-01-30 | Mitsubishi Electric Corporation | Indoor unit of an air-conditioning apparatus with grooved flow stabilizer |
| CN104981612A (en) * | 2013-02-12 | 2015-10-14 | 大金工业株式会社 | Air conditioner |
| CN104981612B (en) * | 2013-02-12 | 2017-02-22 | 大金工业株式会社 | Air conditioner |
| CN104074803A (en) * | 2013-03-26 | 2014-10-01 | 珠海格力电器股份有限公司 | Cross-flow fan and air conditioner with same |
| CN105971909A (en) * | 2016-05-05 | 2016-09-28 | 邓林生 | Cross flow induced draft device and cross flow electric appliance |
| CN105757925A (en) * | 2016-05-11 | 2016-07-13 | 广东美的制冷设备有限公司 | Air duct assembly of air conditioner and air conditioner |
| CN109790842A (en) * | 2016-09-30 | 2019-05-21 | 大金工业株式会社 | The indoor units of cross-flow fan and the air-conditioning device including the cross-flow fan |
| CN109790842B (en) * | 2016-09-30 | 2021-03-23 | 大金工业株式会社 | Cross-flow fan and indoor unit of air conditioning device comprising same |
| CN107975868A (en) * | 2016-10-21 | 2018-05-01 | 三星电子株式会社 | Air-conditioning |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2604201T3 (en) | 2017-03-03 |
| CN100462564C (en) | 2009-02-18 |
| EP1780475A2 (en) | 2007-05-02 |
| EP1780475B1 (en) | 2016-10-19 |
| JP2007120880A (en) | 2007-05-17 |
| EP1780475A3 (en) | 2013-01-16 |
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