CN205079414U - Wind channel return air inlet - Google Patents
Wind channel return air inlet Download PDFInfo
- Publication number
- CN205079414U CN205079414U CN201520701111.5U CN201520701111U CN205079414U CN 205079414 U CN205079414 U CN 205079414U CN 201520701111 U CN201520701111 U CN 201520701111U CN 205079414 U CN205079414 U CN 205079414U
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- CN
- China
- Prior art keywords
- return air
- air inlet
- archimedes
- spiral
- air channel
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Abstract
The utility model relates to a wind channel return air inlet, wind channel return air inlet sets up the one end at the gas passage in wind channel, and in the gas passage and the position relative with wind channel return air inlet is equipped with the fan, wind channel return air inlet's shape serve as reasons one section archimedes spiral and one section non -circular closed curve that circular arc end to end constitutes, wherein the fan blade of archimedes spiral's expansion direction and fan turns to on the contrary. The utility model discloses a wind channel return air inlet's area is greater than original wind channel return air inlet's area, and wind channel return air inlet's diameter reduces along the acceleration direction of fan blade to the air current gradually, and the entry that more is favorable to the air current with higher speed to improve return air efficiency, in addition the utility model discloses a wind channel return air inlet return air airflow direction that more laminates is favorable to reducing the entry vortex, improves return air efficiency.
Description
Technical field
The utility model relates to ventilation field, specifically, relates to a kind of air channel return air inlet.
Background technology
As shown in Figure 1, in general, air channel is made up of gas passage 2 and the return air inlet 1 be communicated with gas passage and air outlet, and in described gas passage and the position relative with described return air inlet 1 is provided with fan 3 for return air.But existing return air inlet 1 is generally circular, during blower fan high-speed rotation, local eddy currents can be formed at return air inlet place, affect return air efficiency.
Utility model content
The utility model provides a kind of air channel return air inlet, technical problem to be solved be traditional return air inlet when blower fan high-speed rotation, local eddy currents can be formed at return air inlet place, affect the problem of return air efficiency.
The technical scheme that the utility model solves the problems of the technologies described above is as follows:
The utility model provides a kind of air channel return air inlet, described air channel return air inlet is arranged on one end of the gas passage in air channel, gas passage is interior and the position relative with air channel return air inlet is provided with fan, the shape of described air channel return air inlet is to be joined end to end the non-circular closed curve formed by one section of spiral of Archimedes and one section of circular arc, and wherein the dimension of spiral of Archimedes turns to contrary with the fan blade of fan.
Spiral of Archimedes is otherwise known as Archimedes spiral, also known as " constant velocity spiral ".Helical refers to that some rotate and the curve constantly shrinking or expand round some fixed point or axle, and Archimedes spiral is a kind of dimensional spiral.In " opinion helical ", Archimedes gives as given a definition: as 1 P along dynamic ray OP with while waiting rate motion, this ray rotates around an O with constant angular velocity again, and the track of some P is called " Archimedes spiral ".
On the basis of technique scheme, the utility model can also do following improvement.
Further, the pivot of described spiral of Archimedes overlaps with the subpoint of the center of described fan in spiral of Archimedes place plane, the pivot of described spiral of Archimedes and the center of described fan along fan shaft to distance be 5-8mm, wherein, the central point of the rotation when pivot of described spiral of Archimedes refers to that spiral of Archimedes of the present utility model is complete helix line.
The beneficial effect of above-mentioned further scheme is adopted to be: the pivot of spiral of Archimedes overlaps with the subpoint of the center of described fan in spiral of Archimedes place plane, make air channel return air inlet better corresponding with the position of fan, thus the resistance that reduction air channel return air inlet brings, thus be more conducive to the entry accelerated of air-flow, thus improve return air efficiency.
Further, the length of the initial radium of described spiral of Archimedes is the 75%-85% of the length of fan radius, wherein, the initial radium of described spiral of Archimedes refers to the radius of one section of spiral of Archimedes along the section start of its direction of rotation of intercepting of the present utility model.
The beneficial effect of above-mentioned further scheme is adopted to be: because the radius of spiral of Archimedes increases gradually along with its direction of rotation, so, the length of the initial radium of spiral of Archimedes is set to the 75%-85% of the length of fan radius, the area of air channel of the present utility model return air inlet is made to be greater than the area of original air channel return air inlet, and the diameter of air channel return air inlet reduces gradually along the acceleration direction of fan blade to air-flow, more be conducive to the entry accelerated of air-flow, thus improve return air efficiency.
Further, the length of the initial radium of described spiral of Archimedes is 80% of the length of fan radius.
Further, the rotation starting point of described spiral of Archimedes and the center of described fan are a horizontal linear at the line of the subpoint of spiral of Archimedes place plane, wherein, the rotation starting point of spiral of Archimedes refers to the starting point of one section of spiral of Archimedes along its direction of rotation of intercepting of the present utility model.
The beneficial effect of above-mentioned further scheme is adopted to be: the rotation starting point of spiral of Archimedes and the center of circle of described fan are horizontal when designing by air channel of the present utility model return air inlet, the direction of rotation of air channel of the present utility model return air inlet is more fitted the flow direction of return air stream, be conducive to the formation reducing return air inlet place, air channel eddy current, improve return air efficiency.
Further, central angle alpha between the rotation starting point of described spiral of Archimedes and the rotation terminal of spiral of Archimedes is 280-330 °, the rotation terminal of wherein said spiral of Archimedes refers to that the terminating point of one section of spiral of Archimedes along its direction of rotation of intercepting of the present utility model, described central angle alpha refer to the rotation starting point of described spiral of Archimedes and the anglec of rotation rotated before terminal.
The beneficial effect of above-mentioned further scheme is adopted to be: the central angle alpha between the rotation Origin And Destination of described spiral of Archimedes to be limited to as between 280-330 °, to ensure sufficiently long spiral of Archimedes thus making the direction of rotation of air channel of the present utility model return air inlet can play the effect of the flow direction of return air stream of more fitting on the one hand, thus be conducive to the formation reducing return air inlet place, air channel eddy current, improve return air efficiency; Being on the other hand for connecting the starting point of spiral of Archimedes and the circular arc of terminal leaves enough leeway, being convenient to smooth connection therebetween, more attractive in appearancely also more meet hydromechanical demand.
Further, the central angle alpha between the rotation Origin And Destination of described spiral of Archimedes is 310 °.
Further, described spiral of Archimedes and the smooth connection of described circular arc.
Adopt the beneficial effect of above-mentioned further scheme to be: spiral of Archimedes and circular arc in smoothing junction thus make to form air channel return air inlet and have smooth inwall, more meet hydromechanical demand, reducing friction resistance, reduce air quantity loss, the efficiency of blower fan is played to ultimate attainment, by lower power consumption to bottom line, and also more attractive in appearance being more easy to is processed and is installed.
The utility model also relates to a kind of air channel, described air channel comprises gas passage, air channel return air inlet and fan, wherein, described air channel return air inlet is arranged on one end of the gas passage in air channel, gas passage is interior and the position relative with air channel return air inlet is provided with fan, the shape of described air channel return air inlet is that wherein the dimension of spiral of Archimedes turns to contrary with fan blade by one section of spiral of Archimedes and one section of end to end non-circular structure formed of circular arc; The pivot of described spiral of Archimedes overlaps with the subpoint of the center of described fan in spiral of Archimedes place plane, the pivot of described spiral of Archimedes and the center of described fan along fan shaft to distance be 5-8mm, the length of the initial radium of described spiral of Archimedes can be 80% of the radius length of fan; The rotation starting point of described spiral of Archimedes and described fan center are a horizontal linear at the line of the subpoint of spiral of Archimedes place plane, and the central angle alpha between the rotation Origin And Destination of described spiral of Archimedes can be 310 °.
The utility model also relates to a kind of refrigerator, described refrigerator is provided with air channel, described air channel comprises gas passage, air channel return air inlet and fan, wherein, described air channel return air inlet is arranged on one end of the gas passage in air channel, gas passage is interior and the position relative with air channel return air inlet is provided with fan, the shape of described air channel return air inlet is that wherein the dimension of spiral of Archimedes turns to contrary with the fan blade of fan by one section of spiral of Archimedes and one section of end to end non-circular structure formed of circular arc; The pivot of described spiral of Archimedes overlaps with the subpoint of the center of described fan in spiral of Archimedes place plane, the pivot of described spiral of Archimedes and the center of described fan along fan shaft to distance be 5-8mm, the length of the initial radium of described spiral of Archimedes can be 80% of the radius length of fan; The rotation starting point of described spiral of Archimedes and described fan center are a horizontal linear at the line of the subpoint of spiral of Archimedes place plane, and the central angle alpha between the rotation Origin And Destination of described spiral of Archimedes can be 310 °.Because described air channel has higher return air amount and return air efficiency, thus greatly can reduce the size of described return air inlet, the space that described air channel takies can be reduced, thus the usage space of the refrigeration compartment of described refrigerator can be increased.
The beneficial effects of the utility model are: the area of air channel of the present utility model return air inlet is greater than the area of original air channel return air inlet, and the diameter of air channel return air inlet reduces gradually along the acceleration direction of fan blade to air-flow, more be conducive to the entry accelerated of air-flow, thus improve return air efficiency; In addition air channel of the present utility model return air inlet is more fitted return air stream direction, is conducive to reducing into opening vortex, improves return air efficiency.
Accompanying drawing explanation
Fig. 1 is the decomposition texture schematic diagram with the air channel of air channel return air inlet in prior art.
Fig. 2 is the decomposition texture schematic diagram with the air channel of air channel return air inlet in the utility model.
Fig. 3 is the structural representation of the air channel return air inlet in the utility model.
Detailed description of the invention
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 3, the utility model provides a kind of air channel return air inlet 4, described air channel return air inlet 4 is arranged on one end of the gas passage 2 in air channel, gas passage 2 is interior and the position relative with air channel return air inlet 4 is provided with fan 3, the shape of described air channel return air inlet 4 is that wherein the dimension of spiral of Archimedes 41 turns to contrary with the fan blade of fan 3 by one section of spiral of Archimedes 41 and one section of end to end non-circular closed curve formed of circular arc 42; The pivot of described spiral of Archimedes 41 overlaps with the subpoint of the center of described fan 3 in spiral of Archimedes 41 place plane, the pivot of described spiral of Archimedes 41 and the center of described fan 3 along fan shaft to distance be 5-8mm, the length of the initial radium of described spiral of Archimedes 41 is 80% of the radius length of fan 3; Rotation starting point 43 and described fan 3 center of described spiral of Archimedes 41 are a horizontal linear at the line of the subpoint of spiral of Archimedes 41 place plane, and the central angle alpha between the rotation starting point 43 of described spiral of Archimedes 41 and terminal 44 is 310 °.
As shown in Figure 2, the utility model also relates to a kind of air channel, described air channel comprises gas passage 2, air channel return air inlet 4 and fan 3, wherein, described air channel return air inlet 4 is arranged on one end of the gas passage 2 in air channel, gas passage 2 is interior and the position relative with air channel return air inlet 4 is provided with fan 3, the shape of described air channel return air inlet 4 is that wherein the dimension of spiral of Archimedes 41 turns to contrary with the fan blade of fan 3 by one section of spiral of Archimedes 41 and one section of end to end non-circular closed curve formed of circular arc 42; The pivot of described spiral of Archimedes 41 overlaps with the subpoint of the center of described fan 3 in spiral of Archimedes 41 place plane, the pivot of described spiral of Archimedes 41 and the center of described fan 3 along fan shaft to distance be 5-8mm, the length of the initial radium of described spiral of Archimedes 41 is 80% of the radius length of fan 3; Rotation starting point 43 and described fan 3 center of described spiral of Archimedes 41 are a horizontal linear at the line of the subpoint of spiral of Archimedes 41 place plane, and the central angle alpha between the rotation starting point 43 of described spiral of Archimedes 41 and terminal 44 is 310 °.
The utility model also relates to a kind of refrigerator, described refrigerator comprises air channel, described air channel comprises gas passage 2, air channel return air inlet 4 and fan 3, wherein, described air channel return air inlet 4 is arranged on one end of the gas passage 2 in air channel, gas passage 2 is interior and the position relative with air channel return air inlet 4 is provided with fan 3, the shape of described air channel return air inlet 4 is that wherein the dimension of spiral of Archimedes 41 turns to contrary with the fan blade of fan 3 by one section of spiral of Archimedes 41 and one section of end to end non-circular closed curve formed of circular arc 42; The pivot of described spiral of Archimedes 41 overlaps with the subpoint of the center of described fan 3 in spiral of Archimedes 41 place plane, the pivot of described spiral of Archimedes 41 and the center of described fan 3 along fan shaft to distance be 5-8mm, the length of the initial radium of described spiral of Archimedes 41 is 80% of the radius length of fan 3; Rotation starting point 43 and described fan 3 center of described spiral of Archimedes 41 are a horizontal linear at the line of the subpoint of spiral of Archimedes 41 place plane, and the central angle alpha between the rotation starting point 43 of described spiral of Archimedes 41 and terminal 44 is 310 °.
In description of the present utility model, it will be appreciated that, term " spacing ", " distance ", " close ", " away from ", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In the utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment, revises, replace and modification in scope of the present utility model.
Claims (10)
1. an air channel return air inlet, described air channel return air inlet (4) is arranged on one end of the gas passage (2) in air channel, in gas passage (2), the position relative with air channel return air inlet (4) is provided with fan (3), it is characterized in that, the shape in described air channel return air inlet (4) is that the dimension of wherein said spiral of Archimedes (41) turns to contrary with the fan blade of fan (3) by one section of spiral of Archimedes (41) and one section of circular arc (42) end to end non-circular closed curve formed.
2. air channel according to claim 1 return air inlet, it is characterized in that, the pivot of described spiral of Archimedes (41) overlaps with the subpoint of the center of described fan (3) in spiral of Archimedes (41) place plane, the pivot of described spiral of Archimedes (41) and the center of described fan (3) along fan shaft to distance be 5-8mm.
3. air channel according to claim 1 return air inlet, is characterized in that, the length of the initial radium of described spiral of Archimedes (41) is the 75%-85% of the radius length of fan (3).
4. air channel according to claim 3 return air inlet, is characterized in that, the length of the initial radium of described spiral of Archimedes (41) is 80% of the radius length of fan (3).
5. air channel according to claim 1 return air inlet, it is characterized in that, rotation starting point (43) and described fan (3) center of described spiral of Archimedes (41) are a horizontal linear at the line of the subpoint of spiral of Archimedes (41) place plane.
6. air channel according to claim 1 return air inlet, is characterized in that, the central angle alpha between the rotation starting point (43) of described spiral of Archimedes (41) and terminal (44) is 280-330 °.
7. air channel according to claim 6 return air inlet, is characterized in that, the central angle alpha between the rotation starting point (43) of described spiral of Archimedes (41) and terminal (44) is 310 °.
8. air channel according to claim 1 return air inlet, is characterized in that, in smoothing junction between described spiral of Archimedes (41) and described circular arc (42).
9. an air channel, is characterized in that, described air channel comprises the air channel return air inlet described in any one of claim 1-8.
10. a refrigerator, is characterized in that, described refrigerator comprises air channel according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520701111.5U CN205079414U (en) | 2015-09-10 | 2015-09-10 | Wind channel return air inlet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520701111.5U CN205079414U (en) | 2015-09-10 | 2015-09-10 | Wind channel return air inlet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205079414U true CN205079414U (en) | 2016-03-09 |
Family
ID=55431819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520701111.5U Withdrawn - After Issue CN205079414U (en) | 2015-09-10 | 2015-09-10 | Wind channel return air inlet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205079414U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105115123A (en) * | 2015-09-10 | 2015-12-02 | 合肥华凌股份有限公司 | Return air inlet of air duct |
-
2015
- 2015-09-10 CN CN201520701111.5U patent/CN205079414U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105115123A (en) * | 2015-09-10 | 2015-12-02 | 合肥华凌股份有限公司 | Return air inlet of air duct |
| CN105115123B (en) * | 2015-09-10 | 2018-07-31 | 合肥华凌股份有限公司 | A kind of air duct return air inlet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160309 Effective date of abandoning: 20180731 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20160309 Effective date of abandoning: 20180731 |