CN202937509U - Centrifugal blower and air conditioner comprising same - Google Patents
Centrifugal blower and air conditioner comprising same Download PDFInfo
- Publication number
- CN202937509U CN202937509U CN 201220616355 CN201220616355U CN202937509U CN 202937509 U CN202937509 U CN 202937509U CN 201220616355 CN201220616355 CN 201220616355 CN 201220616355 U CN201220616355 U CN 201220616355U CN 202937509 U CN202937509 U CN 202937509U
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- Prior art keywords
- fan
- centrifugal blower
- spiral case
- groove
- blown
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Abstract
The utility model discloses a centrifugal blower. The centrifugal blower comprises a spiral housing and a fan which is arranged in the spiral housing, wherein a gas inlet is formed in the side surface of the spiral housing; a gas exhaust channel and a gas outlet are formed in the spiral housing, the gas exhaust channel is formed around the fan and the gas outlet is communicated with the gas exhaust channel; the cross section area, along the gas outlet direction, of the gas exhaust channel is gradually increased outwards in the radial direction; the fan is used for blowing the air, which is axially absorbed from the gas inlet, to the outside along the diameter direction; the blown-out air forms air flow and is exhausted from the gas outlet through the gas exhaust channel; the centrifugal blower is characterized in that a circle of windshield wall adaptive to the peripheral surface of an impeller is formed in the spiral housing; the windshield wall is arranged outside the impeller, and a gap allowing the fan to move is formed between the windshield wall and the fan; and the windshield wall is used for blocking the blown-out air flow from returning to the fan during the working process. The centrifugal blower disclosed by the utility model can be used for effectively blocking the blown-out air flow from returning to the fan; and a large space can be reserved through the cooperation of the large-dimension spiral housing and the small-dimension fan, so that the noises generated when the air flow passes through the spiral housing are removed.
Description
Technical field
The utility model relates generally to a kind of centrifugal blower, and the air conditioner that comprises this kind centrifugal blower.
Background technique
Centrifugal blower is widely used in the fields such as industrial ventilation, dedusting, chemical industry, HVAC, also be used for air conditioner, in air conditioner, centrifugal blower used mainly comprises spiral case and is arranged on the interior centrifugal multi-blade fan of spiral case, be provided with air passageways in spiral case, the spinning movement of centrifugal multi blade fan during work, through outwards blowing, air is blown blower by air passageways to air in described air passageways.Along with market to the intelligentized development of air conditioner, need to improve blast in limited space, add Wind Volume, reduce noise, now generally be merely able to by the output power that improves motor improve blower blast, add Wind Volume, yet adopt the method not only can cause the overall dimensions of blower to increase, and can increase its cost, raising noise.
The model utility content
in order to address the above problem, the utility model provides a kind of centrifugal blower, comprise spiral case, be installed on the fan in spiral case, described spiral case side has suction port, be formed with the exhaust passage around fan in volute, and the air outlet that is communicated with the exhaust passage, the exhaust passage increases gradually along air outlet direction cross sectional area radially outward, described fan is used for and will be blown into the outside along diametric(al) from the air that suction port axially sucks, the air that is blown forms air-flow and is discharged by the air outlet by the exhaust passage, it is characterized in that: be formed with the suitable Wind proof wall of a circle and impeller outer side face in described spiral case, Wind proof wall is arranged on the gap of leaving between impeller outer and fan for the fan activity, during fan work, Wind proof wall is used for stopping that the airflow reflux that is blown is to fan.
Further, be formed with in spiral case one with the suitable groove of fan outer circumferential face, fan is installed in this groove sidewall take groove as Wind proof wall, leaves certain free gap between the bottom of fan and groove.
Further, spiral case and groove are one-body molded.
Further, the diameter of spiral case is 12-18cm, and the diameter of fan is 7-9cm.
Further, the gap between fan and Wind proof wall is in the scope of 0.5-1.5mm.
Further, the degree of depth of groove is in the scope of 3-5mm.
Further, the free gap between the bottom of fan and groove is in the scope of 0.5-1.5mm.
Further, exhaust passage the widest position is 3-5cm, and the narrowest width is 1-2.5cm.
The utility model also provides a kind of air conditioner, comprises above-mentioned centrifugal blower.
The utility model has the advantages that:
The centrifugal blower that the utility model provides is compared with traditional centrifugal blower, be provided with a circle Wind proof wall on the fan outer circumferential face, can stop effectively that the airflow reflux that is blown is to fan, therefore can adopt large-sized spiral case and undersized fan to match, reserve larger space as the exhaust passage, the noise that produces when eliminating air-flow by spiral case.
The blower blast that uses before improving is that 96.3 column, noise are 66 decibel values, and the centrifugal blower blast after improvement is that 106.2 column, noise are 59.2 decibel values, blast raising 10%, noise decrease 10%.Improved blast, reduced noise, increased because blast increases air output simultaneously, made centrifugal blower can also play the function of dedusting.
Description of drawings
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is the schematic diagram of the utility model specific embodiment centrifugal blower.
Fig. 2 is the sectional view of the utility model specific embodiment centrifugal blower.
Fig. 3 is the schematic diagram of the spiral case of the utility model specific embodiment centrifugal blower.
Embodiment
In order better to understand the technical solution of the utility model, describe below in conjunction with accompanying drawing the embodiment that the utility model provides in detail.
With reference to Fig. 1, Fig. 2, shown in Figure 3, a kind of centrifugal blower comprises spiral case 1 and is installed on the interior fan 2 of spiral case that the diameter of spiral case is that the diameter of 12-18cm, fan is 7-9cm, and preferred spiral case diameter is 15cm, and fan diameter is 8cm.
With reference to Fig. 1, Fig. 2, shown in Figure 3, spiral case 1 side have the exhaust passage 12 that is formed with in suction port 11, volute 1 around fan 2, the air outlet 13 that is communicated with exhaust passage 12, with the suitable groove 14 of fan outer circumferential face, 11 direction cross sectional area radially outwards increase gradually along the air outlet in exhaust passage 13, exhaust passage the widest position is 3-5cm, the narrowest width is 1-2.5cm, preferred the widest position is 4cm, and the narrowest width is 1.5cm; Groove 14 is formed at and interior suction port 11 1 sides of spiral case 1, and spiral case 1 is one-body molded with groove 14, the degree of depth of groove in the scope of 3-5mm, 4mm preferably.
With reference to Fig. 1, Fig. 2, shown in Figure 3, fan 2 is installed in this groove 14 sidewall take groove 14 as Wind proof wall 141, leaves the gap 31 of confession fan activity between Wind proof wall 141 and fan 2, the gap in the scope of 0.5-1.5mm, 0.1mm preferably; Leave certain free gap 32 between the bottom of fan 2 and groove 14, free gap 32 in the scope of 0.5-1.5mm, 0.1mm preferably.
With reference to Fig. 1, Fig. 2, shown in Figure 3, the working principle of this centrifugal blower is as follows: fan 2 will be blown into the outside along diametric(al) from the air that suction port 11 axially sucks, the air that is blown forms air-flow and is discharged by air outlet 13 by exhaust passage 12, during fan 2 work, Wind proof wall 141 stops that the airflow reflux that is blown is to fan 2, therefore can adopt large-sized spiral case and undersized fan to match, reserve larger space as the exhaust passage, the noise that produces when eliminating air-flow by spiral case.
The utility model also provides a kind of air conditioner, comprises above-mentioned centrifugal blower.
The above, it is only the utility model preferred embodiment, therefore can not limit the scope that the utility model is implemented with this, the equivalence of namely doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.
Claims (9)
1. centrifugal blower, comprise spiral case, be installed on the fan in spiral case, described spiral case side has suction port, be formed with the exhaust passage around fan in volute, and the air outlet that is communicated with the exhaust passage, the exhaust passage increases gradually along air outlet direction cross sectional area radially outward, described fan is used for and will be blown into the outside along diametric(al) from the air that suction port axially sucks, the air that is blown forms air-flow and is discharged by the air outlet by the exhaust passage, it is characterized in that: be formed with the suitable Wind proof wall of a circle and impeller outer side face in described spiral case, Wind proof wall is arranged on the gap of leaving between impeller outer and fan for the fan activity, during fan work, Wind proof wall is used for stopping that the airflow reflux that is blown is to fan.
2. centrifugal blower according to claim 1, it is characterized in that: the inside that described spiral case has suction port one side be formed with one with the suitable groove of fan outer circumferential face, fan is installed in this groove sidewall take groove as Wind proof wall, leaves certain free gap between the bottom of fan and groove.
3. centrifugal blower according to claim 2, it is characterized in that: described spiral case and groove are one-body molded.
4. centrifugal blower according to claim 1 and 2, it is characterized in that: the diameter of described spiral case is 12-18cm, the diameter of fan is 7-9cm.
5. centrifugal blower according to claim 4, it is characterized in that: the gap between described fan and Wind proof wall is in the scope of 0.5-1.5mm.
6. centrifugal blower according to claim 4, it is characterized in that: the degree of depth of described groove is in the scope of 3-5mm.
7. centrifugal blower according to claim 4, it is characterized in that: the free gap between the bottom of described fan and groove is in the scope of 0.5-1.5mm.
8. centrifugal blower according to claim 4, it is characterized in that: described exhaust passage the widest position is 3-5cm, and the narrowest width is 1-2.5cm.
9. an air conditioner, is characterized in that: comprise the described centrifugal blower of any one in claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220616355 CN202937509U (en) | 2012-11-20 | 2012-11-20 | Centrifugal blower and air conditioner comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220616355 CN202937509U (en) | 2012-11-20 | 2012-11-20 | Centrifugal blower and air conditioner comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202937509U true CN202937509U (en) | 2013-05-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220616355 Expired - Lifetime CN202937509U (en) | 2012-11-20 | 2012-11-20 | Centrifugal blower and air conditioner comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202937509U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954041A (en) * | 2012-11-20 | 2013-03-06 | 石狮市通达电机有限公司 | Centrifugal blower and air conditioner including same |
| CN112050296A (en) * | 2019-06-06 | 2020-12-08 | 夏普株式会社 | Air conditioner |
-
2012
- 2012-11-20 CN CN 201220616355 patent/CN202937509U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954041A (en) * | 2012-11-20 | 2013-03-06 | 石狮市通达电机有限公司 | Centrifugal blower and air conditioner including same |
| CN102954041B (en) * | 2012-11-20 | 2015-09-02 | 石狮市通达电机有限公司 | Centrifugal blower and comprise the air conditioner of this kind of centrifugal blower |
| CN112050296A (en) * | 2019-06-06 | 2020-12-08 | 夏普株式会社 | Air conditioner |
| CN112050296B (en) * | 2019-06-06 | 2024-02-06 | 夏普株式会社 | Air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130515 |
|
| CX01 | Expiry of patent term |