CN204900338U - Two air inlet spiral cases - Google Patents
Two air inlet spiral cases Download PDFInfo
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- CN204900338U CN204900338U CN201520638282.8U CN201520638282U CN204900338U CN 204900338 U CN204900338 U CN 204900338U CN 201520638282 U CN201520638282 U CN 201520638282U CN 204900338 U CN204900338 U CN 204900338U
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- circular arc
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Abstract
The utility model relates to a volute blower makes the field, discloses a two air inlet spiral cases, including the spiral case body, be equipped with air intake and air outlet on the spiral case body, the altitude range of air outlet is between 66mm-90mm, the spiral case body passes through the molded lines and forms the diffusion chamber, the molded lines of spiral case body includes first circular arc, second circular arc and third circular arc, the radius of first circular arc is greater than the radius of second circular arc, the radius of second circular arc is greater than the radius of third circular arc, central M is drawn to the molded lines of first circular arc, central K is drawn respectively for the equal eccentric settings of the the central axis L of air intake to the molded lines central N of drawing of second circular arc and the molded lines of third circular arc. The utility model discloses the setting of spiral case body molded lines makes the diffusion chamber evenly enlarge, makes the air current smoothly follow the spiral case body of flowing through after centrifugal fan blade is taken turns with higher speed and delivers to the air outlet, reduces whole flow resistance in fan wind channel and frictional noise, and realization air current and spiral case internal face do not bump, reduce the purpose of noise, promote the amount of wind that the fan produced.
Description
Technical field
The utility model relates to volute of blower and manufactures field, particularly relates to a kind of two air intake spiral case.
Background technique
Existing centrifugal blower volute, all design according to Archimedes spiral design or logarithmic spiral, the Lines drawing center of spiral case body, the central axis of centrifugal impeller and the geometric centre axes of baffle liner are all located along the same line, traditional design thinking does not consider the spatial constraints of housing, spiral case inlet pressure designs according to the distribution of fan blade air outlet velocity completely, namely to collide possibility little for the internal face of air-flow and spiral case, without the need to adopting eccentric mentality of designing.
Because the shell space of the electric equipment such as air-conditioning, small household appliances is limited, blower fan theory completely traditionally cannot draw the molded line that Archimedes spiral or logarithmic spiral design spiral case, can cause the design of spiral case export with the fan blade in diffusion chamber near wind speed do not mate.If the wind speed size and Orientation near the fan blade outlet in diffusion chamber does not mate with whole Volute Design, the internal face of air-flow and spiral case will be caused to collide, cause energy loss, and produce noise.
Summary of the invention
The internal face of the utility model air-flow and spiral case collides the shortcoming making energy loss, produce noise, provides the two air intake spiral case of one that a kind of energy did not lose, do not produce noise.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
A kind of two air intake spiral case, comprise spiral case body, spiral case body is provided with intake grill and exhaust outlet, the height H of exhaust outlet is at 66mm ~ 90mm, spiral case body forms diffusion chamber by molded line, the molded line of spiral case body comprises the first circular arc connected successively, second circular arc and three-arc, the radius of the first circular arc is greater than the radius of the second circular arc, the radius of the second circular arc is greater than the radius of three-arc, the Lines drawing center M of the first circular arc, the Lines drawing center N of the second circular arc and the Lines drawing center K of three-arc is respectively relative to the central axis L eccentric setting of intake grill.By increasing the height of exhaust outlet, exhaust outlet is connected with the diffusion chamber of the first circular arc, air-flow and spiral case inwall is avoided to collide, the difference of spiral case body molded line radius of arc, make the diffusion chamber corresponding to spiral case Inner arc different, pass through eccentric setting, diffusion chamber is evenly expanded gradually, impel main flow air-flow more smooth and easy from centrifugal impeller accelerate after flow through the exhaust outlet that spiral case body delivers to diffusion chamber, reduce the obstruction to main flow air-flow, thus reduce fan air channel overall flow resistance, reduce the frictional noise of fan air channel, thus realize air-flow and spiral case internal face does not collide, promote air quantity, reduce the object of noise.
As preferably, the molded line of spiral case body also comprises the horizontal line tangent with one end of the first circular arc, the other end of the first circular arc and one end of the second circular arc tangent, the other end of the second circular arc and one end of three-arc tangent.Tangent successively by arc section, avoids the formation turning, joint of circular arc, makes air-flow produce shock around the corner, cause energy loss, also avoids producing because air-flow produces the noise of shock around the corner.
As preferably, spiral case body width L is at 205mm ~ 225mm, the position setting central axis L in XY system of coordinates coordinate as (0,0), exhaust outlet is in the second quadrant of XY system of coordinates, Lines drawing center M, the Lines drawing center N of the second circular arc of the first circular arc and the Lines drawing center K of three-arc relative to the position coordinate of central axis L respectively at M (-11.7 ~-7.7,5 ~ 9) mm, N (-2.4 ~ 2.4,1.3 ~ 5.3) mm, K (-1.6 ~ 5.6 ,-4.4 ~-8.4) mm.The Lines drawing center M of the first circular arc, the Lines drawing center N of the second circular arc and the Lines drawing center K of the three-arc eccentric position relative to central axis L is specifically set, guarantee that the diffusion chamber corresponding to circular arc expands gradually uniformly, reduce air-flow and spiral case inwall to collide the energy loss caused, avoid the generation of noise.
As preferably, the both sides of spiral case body are equipped with preformed hole.Spiral case body also arranges blade, and preformed hole facilitates the installation of the left side plate of impeller motor, facilitates the installation of impeller motor.
As preferably, exhaust outlet is provided with the scaffold be fixedly mounted on spiral case body, and scaffold and spiral case body are by resistance welding and rivet to combine and be connected.The aesthetic measure of spiral case is improve by resistance welding, adopt resistance welding to improve the manufacturing efficiency of spiral case simultaneously, reduce cost of production, by riveted joint on the basis of resistance welding, add the join strength of scaffold and spiral case body, improve stability during installation.
The utility model is owing to have employed above technological scheme, there is significant technique effect: the difference of spiral case body molded line radius of arc, make the diffusion chamber corresponding to spiral case Inner arc different, pass through eccentric setting, diffusion chamber is evenly expanded gradually, impel main flow air-flow more smooth and easy from centrifugal impeller accelerate after flow through the exhaust outlet that spiral case body delivers to diffusion chamber, reduce the obstruction to main flow air-flow, thus reduce fan air channel overall flow resistance, reduce the frictional noise of fan air channel, thus realize air-flow and spiral case internal face does not collide, reduce the object of noise, improve the air quantity that blower fan produces.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A portion partial enlarged drawing of Fig. 1.
Fig. 3 is side view of the present utility model.
The toponym that in accompanying drawing, each number designation refers to is as follows: the Lines drawing center of 1-spiral case body, 2-intake grill, 3-diffusion chamber, the 4-the first circular arc, the 5-the second circular arc, the 6-the three-arc, 7-exhaust outlet, 8-preformed hole, 9-scaffold, 10-horizontal line, M-the first circular arc, the Lines drawing center of N-the second circular arc, the Lines drawing center of K-the three-arc, L-central axis.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Embodiment 1
A kind of two air intake spiral case, as shown in Figure 1 to Figure 3, comprise spiral case body 1, spiral case body 1 is provided with intake grill 2 and exhaust outlet 7, the height H of exhaust outlet 7 is 78.9mm, spiral case body 1 forms diffusion chamber 3 by molded line, the molded line of spiral case body 1 comprises the first circular arc 4 connected successively, second circular arc 5 and three-arc 6, the radius of the first circular arc 4 is greater than the radius of the second circular arc 5, the radius of the second circular arc 5 is greater than the radius of three-arc 6, the Lines drawing center M of the first circular arc 4, the Lines drawing center N of the second circular arc 5 and Lines drawing center K of three-arc 6 is respectively relative to the equal eccentric setting of central axis L of intake grill 2, : the tangent horizontal line 10 of the molded line of spiral case body 1 and one end of the first circular arc 4, the other end of the first circular arc 4 and one end of the second circular arc 5 tangent, the other end of the second circular arc 5 and one end of three-arc 6 tangent, the one end in the diffusion chamber 3 of the first circular arc 4 correspondence is connected with exhaust outlet 7, exhaust outlet 7 upper end is horizontally disposed with, spiral case body 1 width L is 215mm, the position setting central axis L in XY system of coordinates coordinate as (0, 0), exhaust outlet 7 is in the second quadrant of XY system of coordinates, the Lines drawing center M of the first circular arc, the Lines drawing center N of the second circular arc and the Lines drawing center K of three-arc relative to the position coordinate of central axis L respectively at M (-9.7, 7) mm, N (-0.4, 3.3) mm, K (-3.6,-6.4) on mm, the both sides of spiral case body 1 are equipped with preformed hole 8, impeller motor is fixedly connected with spiral case by preformed hole 8, impeller motor can select according to different situations the wherein side that is arranged in spiral case body 1 both sides, improve installation efficiency, exhaust outlet 7 is provided with the scaffold 9 be fixedly mounted on spiral case body 1, scaffold 9 is connected with riveting to combine by resistance welding with spiral case body 1, enhance the intensity of scaffold 9 and spiral case body 1, improve the stability of installation.
In a word, the foregoing is only preferred embodiment of the present utility model, all equalizations done according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (5)
1. a two air intake spiral case, comprise spiral case body (1), spiral case body (1) is provided with intake grill (2) and exhaust outlet (7), it is characterized in that: the height H of exhaust outlet (7) is at 66mm ~ 90mm, spiral case body (1) forms diffusion chamber (3) by molded line, the molded line of spiral case body (1) comprises the first circular arc (4) connected successively, second circular arc (5) and three-arc (6), the radius of the first circular arc (4) is greater than the radius of the second circular arc (5), the radius of the second circular arc (5) is greater than the radius of three-arc (6), the Lines drawing center M of the first circular arc (4), the Lines drawing center N of the second circular arc (5) and the Lines drawing center K of three-arc (6) is respectively relative to the equal eccentric setting of central axis L of intake grill (2).
2. the two air intake spiral case of one according to claim 1, it is characterized in that: the molded line of spiral case body (1) also comprises the horizontal line (10) tangent with one end of the first circular arc (4), the other end of the first circular arc (4) and one end of the second circular arc (5) tangent, the other end of the second circular arc (5) and one end of three-arc (6) tangent.
3. the two air intake spiral case of one according to claim 1, it is characterized in that: spiral case body (1) width L is at 205mm ~ 225mm, the position setting central axis L in XY system of coordinates coordinate as (0, 0), exhaust outlet (7) is in the second quadrant of XY system of coordinates, the Lines drawing center M of the first circular arc (4), the Lines drawing center N of the second circular arc (5) and the Lines drawing center K of three-arc (6) relative to the position coordinate of central axis L respectively at M (-11.7 ~-7.7, 5 ~ 9) mm, N (-2.4 ~ 2.4, 1.3 ~ 5.3) mm, K (-1.6 ~ 5.6,-4.4 ~-8.4) mm.
4. the two air intake spiral case of one according to claim 1, is characterized in that: the both sides of spiral case body (1) are equipped with preformed hole (8).
5. the two air intake spiral case of one according to claim 1, is characterized in that: exhaust outlet (7) is provided with the scaffold (9) be fixedly mounted on spiral case body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520638282.8U CN204900338U (en) | 2015-08-21 | 2015-08-21 | Two air inlet spiral cases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520638282.8U CN204900338U (en) | 2015-08-21 | 2015-08-21 | Two air inlet spiral cases |
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| Publication Number | Publication Date |
|---|---|
| CN204900338U true CN204900338U (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520638282.8U Active CN204900338U (en) | 2015-08-21 | 2015-08-21 | Two air inlet spiral cases |
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| Country | Link |
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| CN (1) | CN204900338U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321513A (en) * | 2016-11-15 | 2017-01-11 | 青岛海信日立空调系统有限公司 | Centrifugal fan and total heat exchanger |
| CN109744903A (en) * | 2017-12-05 | 2019-05-14 | 九阳股份有限公司 | A kind of food processor that noise reduces |
-
2015
- 2015-08-21 CN CN201520638282.8U patent/CN204900338U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321513A (en) * | 2016-11-15 | 2017-01-11 | 青岛海信日立空调系统有限公司 | Centrifugal fan and total heat exchanger |
| CN109744903A (en) * | 2017-12-05 | 2019-05-14 | 九阳股份有限公司 | A kind of food processor that noise reduces |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |