Title:
THIN-TYPE BLOWER OF HEATED AIR
Kind Code:
A1


Abstract:
A thin-type blower of heated air relates to air regulation device. It comprises a base and a shell installed on the base, and fans, electric component and heating component mounted inside the shell; an air outlet and an air inlet are mounted in front and in rear of the shell; said heating component (is situated in said air outlet; said shell appears in flat case form; said fans inside the shell constitute a fan-module including—thin-type axial fans, the thin-type axial fan further comprises radial-inlet impeller and thin-type motor, the motor is covered up closely by the hub of the radial-inlet impeller, ensuring the fixed connection between the radial-inlet impeller and the rotation part of the motor. Compared with the prior art, the said thin-type blower features low thickness, smart volume, light weight, low material consumption and low cost.



Inventors:
Lai, Banlai (Shenzhen, CN)
Application Number:
12/418779
Publication Date:
10/15/2009
Filing Date:
04/06/2009
Primary Class:
International Classes:
F04D29/52
View Patent Images:
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Primary Examiner:
COUGHLIN, ANDREW J
Attorney, Agent or Firm:
WESTMAN CHAMPLIN & KOEHLER, P.A. (MINNEAPOLIS, MN, US)
Claims:
1. A thin-type blower of heated air, comprising a base Hand a shell installed on the base, and fans, electric component and heating component mounted inside the shell; an air outlet and an air inlet are mounted in front and in rear of the shell; said heating component is situated in said air outlet; characterized in that: said shell appears in flat case form; said fans inside the shell constitute a fan-module including—thin-type axial fans, the thin-type axial fan further comprises radial-inlet impeller and thin-type motor, the motor is covered up closely by the hub of the radial-inlet impeller, ensuring the fixed connection between the radial-inlet impeller and the rotation part of the motor.

2. A thin-type blower of heated air according to claim 1, being characterized in that: the said fan-module includes at least two sets of thin-type axial fan electrically in parallel or in series connection, the various thin-type axial fans are distributed on a plane or on two planes and respectively intersecting to form an obtuse angle.

3. A thin-type blower of heated air according to claim 2, being characterized in that: the ultra-thin type axial fans are distributed in line or in a matrix.

4. A thin-type blower of heated air according to any one of claim 1, being characterized in that: the said thin-type motor is outer-rotor motors, the hub of the radial-inlet impeller directly covers up closely the outer rotor of the outer-rotor motor and forms a whole with the same axis.

5. A thin-type blower of heated air according to claim 4, being characterized in that: said thin-type motor is outer-motor permanent-magnet brushless DC motor or outer-rotor AC motor.

6. A thin-type blower of heated air according to claim 1, being characterized in that: said thin-type motor is an inner-rotor motor, said hub of the radial-inlet—impeller is fixed at the end of the output axis of the inner-rotor motor, and covers up the stator shell of the inner-rotor motor with radial clearance being reserved.

7. A thin-type blower of heated air according to claim 6, being characterized in that: said inner rotor motor is driven by DC or AC power.

8. A thin-type blower of heated air according to claim 1, being characterized in that: further comprises a shell swing mechanism set inside the base; the swing mechanism comprises a rotation axis fixed at the lower end of the shell a pinion fixed on the rotation axis in a sleeve way a speed reduction synchronous motor installed in the base and an centrifugal wheel fixed on the output axis of the motor, and shift fork rack; the shift fork rack comprises rack and shift fork; said centrifugal wheel is situated in the shift fork and the pinion and the rack are joggled.

9. A thin-type blower of heated air according to claim 1, being characterized in that: further comprises a swing lamina-unit and cam sliding block mechanism set in front of the shell; the cam sliding block mechanism includes synchronous motor, centrifugal wheel and sliding block; the centrifugal wheel and the synchronous motor are connected fixedly, sliding groove is opened in the sliding block and the centrifugal wheel is mounted inside the sliding groove and cooperates with it movably; various swing lamina of the swing lamina-unit connects the sliding block in aid of a small pin axis.

Description:

TECHNICAL FIELD

The present utility model relates to air regulation device, more especially, to blower of heated air with thin-type structure.

BACKGROUND ART

blower of heated air with the present technology drives the air by the fan to enable the running air to pass through the heating component in the blower, finally to flow out of the blower in hope of raising the air temperature and for the purpose of heating. To achieve the heating effect to some extent, the air speed and the volume of the fan must be up to a set point; in other words, must have a set power, the size of the fan is the decisive factor determining the size of the whole unit of the blower. The existing blower of heated air, even for a minimum compact-type blower of heated air, has at least 10 watts of fan power, over 50 mm of axial size and large size of diameter. The existing blower of heated air uses an AC motor to drive the air to flow (the warm air blower for field use is not included in the type indicated herein). Moreover, the existing blower of heated air uses inner rotor motor with the impellers and the stators separating in the axial direction. Therefore, the axial sizes of the blower are high. Limited by the sizes of the blower, the sizes of this type of warm air blower are very big, the thickness is over 100 mm mostly, plastic and metal materials are consumed a lot, the consumption of the copper line for AC motor is enormous and the power consumption of the motor is very high; the dramatic consumption of the resources restricts the development of the national economy. Furthermore, the large material consumption heightens the manufacturing cost, further brings a heavy burden to customers. On the other, hand, the control performance of the AC motor is poor and the speed variation difficult. Generally, the AC motors for household appliances can only realize three-stage speed regulation; they are difficult to achieve step-free speed regulation. An AC motor uses 220V municipal power and the security cannot be guaranteed, so insulation and safety protection measures must be adopted, thus further increasing the cost.

In the existing technology, there is a small-power thin-type axial fan, wherein its motor is a permanent-magnet outer-rotor type DC brushless motor. It is often used as the cooling blower for computer mainframes and instruments as well as in meters, see FIG. 4. This kind of product smartly enables the inner hole of the radial-inlet impeller, that is, the hub covers up the outer-rotor magnetic ring of the motor directly, and in this way make the axial thickness of the impeller overlap with the axial length of the motor, reducing the axial sizes of the fan. This kind of cooling fan is also driven by flat type AC motor, but this AC motor is low in power presently. The power of the heating component of the warm air blower applying this kind of fan is difficult to be over 1300 W, so the performance is poor and it has been eliminated.

SUMMARY OF THE UTILITY MODEL

The present utility model aims at providing a thin-type blower of heated air featuring low thickness, smart volume, light weight, low material consumption and low cost through avoiding the defects in the abovementioned existing technology.

To address the technical problems, the present utility model can take the following technical solution:

Design and use a thin-type blower of heated air, comprising a base and a shell installed on the base, and fans, electric component and heating component mounted inside the shell; an air outlet and an air inlet are mounted in front and in rear of the shell; said heating component is situated in said air outlet; said shell appears in flat case form; said fans inside the shell constitute a fan-module including thin-type axial fans, the thin-type axial fan further comprises radial-inlet impeller and thin-type motor, the motor is covered up closely by the hub of the radial-inlet impeller, ensuring the fixed connection between the radial-inlet impeller and the rotation part of the motor.

The said fan-module includes at least two sets of thin-type axial fan electrically in parallel or in series connection, the various thin-type axial fans are distributed on a plane or on two planes and respectively intersecting to form an obtuse angle. To accommodate the needs of personal use, the fan component can also use a thin-type axial fan.

The thin-type axial fans are distributed in a line or matrix.

In the present utility model, the thin-type motor can be an outer-rotor motor or inner-rotor motor: 1. When the thin-type motor is the outer-rotor motor, the hub of the radial-inlet impeller directly covers up the outer rotor of the outer-rotor motor and forms a whole with the same axis. The thin-type motor can be an outer-rotor permanent-magnet brushless DC motor or an outer-rotor AC motor. 2. When the thin-type motor is inner-rotor motor, the hub of the radial-inlet impeller is fixed at the end of the output axis of the inner-rotor motor, and covers up the stator shell of the inner-rotor motor with radial clearance being reserved. The inner-rotor motor is driven by DC or AC power.

As a further improvement of the present utility model, comprising a shell swing mechanism is set inside the base; the swing mechanism comprises a rotation axis fixed at the lower end of the shell, a pinion fixed on the rotation axis in a sleeve way, a speed reduction synchronous motor installed in the base and an centrifugal wheel fixed on the output axis of the motor, and shift fork rack; the shift fork rack comprises rack and shift fork; the centrifugal wheel is situated in the shift fork and the pinion and the rack are joggled.

As another further improvement of the present utility model, comprising a swing lamina-unit and cam sliding block mechanism set in front of the shell; the cam sliding block mechanism includes synchronous motor, centrifugal wheel and sliding block; the centrifugal wheel and the synchronous motor are connected fixedly, sliding groove is opened in the sliding block and the centrifugal wheel is mounted inside the sliding groove and cooperates with it movably; various swing laminas of the swing lamina-unit connect the sliding block in aid of a small pin axis.

Compared with the existing technology, the present utility model has the following favorable effects: 1. The fan component is the core part of the warm air blower; the thickness and magnitude play a decisive role in the entire unit size, weight and material consumption of air regulation device; the present utility model adopts a fan component of at least two thin type axial flow fans connected in parallel or series electrically included, much smaller in axial sizes compared with the single fan is used. In this way, the volume of the warm air blower is of the same specifications, i.e., the same air output lessens substantially, and the weight reduces dramatically; correspondingly, the consumption of plastic and metal materials for the fittings of the product shell has a large reduction, the manufacturing cost of the product is decreased and social resources are saved, thus the national economy has a growth. Meanwhile, the small volume and lightweight unit also reduces expenses for storage and transportation; 2. The present utility model adopts permanent-magnet brushless DC motor, efficiency is increased compared with the existing warm air blower using AC motor, thus reducing power consumption; 3. By adopting permanent-magnet brushless DC motor for the present utility model, a large amount of strategic resources can be saved: the consumption of steel and copper materials for the brushless DC motor has a high reduction comparing with the AC motor; 5. The permanent-magnet brushless DC motor adopted by the present utility model uses DC power supply much lower than the extremely low safety voltage 42V, thus the security of the motor is enhanced.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is the structural sketch of side and sectional view through fan axis of positive projection for Embodiment 1 for the thin-type blower of the present utility model;

FIG. 2 is the structural sketch of the front view of positive projection for Embodiment 1 of the thin-type blower;

FIG. 3 the structural sketch of the axial projection for Embodiment 1 of the thin-type blower;

FIG. 4 is the enlarged structural sketch of side and sectional view of the single outer rotor axial flow fan used in Embodiment 1 for the thin-type blower;

FIG. 5 is the structural sketch of side and sectional view through fan axis of positive projection for Embodiment 2 for the thin-type blower of the present utility model;

FIG. 6 is the enlarged structural sketch of side and sectional view of the single inner rotor axial flow fan used in Embodiment 2 for the thin-type blower;

FIG. 7 is the structural sketch of side and sectional view through fan axis of positive projection for Embodiment 3 for the thin-type blower of the present utility model;

FIG. 8 is the enlarged structural sketch of front view of positive projection for Embodiment 4 for the thin-type blower of the present utility model;

FIG. 9 is the structural sketch of the front view of positive projection for Embodiment 4 for the thin-type blower of the present utility model;

FIG. 10 is the structural sketch of the front view of positive projection for Embodiment 5 for the thin-type blower of the present utility model.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present utility model is further detailed in combination with the optimal embodiments shown in the drawings hereinafter:

Embodiment 1

Embodiment 1 of the thin-type blower for the present utility model, as shown in FIG. 1 to FIG. 4, comprising a base 10 and a shell 20 installed on the base, and fans, electric component 80 and heating component 90 mounted inside the shell 20; the heating component 90 is set in front of the fan; an air outlet 22 and an air inlet 21 are mounted in front of and in rear of the shell 20; the shell 20 appears in flat case form; the fan constitute a fan-module 30 including four sets of thin-type axial fans 31 electrically in parallel or in series connection; the various thin-type axial fans 31 are distributed on a plane in matrix layout; they all include radial-inlet impeller 311 and outer-rotor motor 312, they can adopt same power or different power, as shown in FIG. 4, the hub 3111 of the radial-inlet impeller 311 and the outer-rotor permanent-magnet ring 3121 of the outer-rotor motor 312 are fixed into an integration; a protection net 221 is installed inside the air outlet 22 in front of the shell and a dust prevention net 211 is installed inside the rear air inlet 21. The outer-rotor motor 312 is permanent-magnet brushless DC motor, its driving power is DC power below 42V and single unit power is less than 10 Watts. According to different user requirements, the outer-rotor motor can be also driven by AC power. Over the recent years, the technology of the outer-rotor AC motor has matured. The heating component 90 is PTC resistance element of positive temperature coefficient sold in the market, can also be electro-thermal thread, or can be metal electro-thermal tube with radiation wing flake, etc. the existing electrothermal elements. The operations of fan and electro-thermal component are controlled and provided for power by electric component 80.

The working principles and the basic components of the embodiment are approximately the same as the warm air blower with existing technology. The differences lie in that the heavy single AC fan inside the warm air blower is replaced by a small-sized portable thin type axial flow DC fan component, in this way reducing the volume and weight of machine body, saving materials and decreasing energy consumption.

Embodiment 2

Embodiment 2 of the thin-type blower for the present utility model, as shown in FIG. 5, it is basically the same to Embodiment 1 and the main differences lie in that: the protection net 221 in front of the shell in Embodiment 1 is changed into swing lamina-unit 60; the upper and the lower ends of various swing laminas for the swing lamina-unit 60 can be connected in a rotating way in aid of pin axis and the shell 20, meanwhile cam sliding block mechanism 40 driving the swing lamina-unit 60 is equipped; the cam sliding block mechanism 40 includes synchronous motor 41, centrifugal wheel 42 and sliding block 43; the centrifugal wheel 42 and the output axis of the synchronous motor 41 are connected fixedly, sliding groove is opened in the sliding block 43, the centrifugal wheel 42 is mounted inside the sliding groove and cooperates with it movably; various swing laminas of the swing lamina-unit 60 connects the sliding block 43 in aid of a small pin axis 62. When the synchronous motor 41 rotates, the output axis drives the centrifugal wheel 42 to rotate, then further drives the sliding block 43 to make to-and-fro movement, and then drives various swing laminas of the swing lamina-unit 60 through a small pin axis 62 to make to-and-fro movement. Another difference between this embodiment and Embodiment 1 is: the motor of the thin-type axial fan 31 adopts inner-rotor motor 313, the rotor 3131 rotates in the center of the unmovable stator 3132, the hub 3111 of the radial-inlet 311 is fixed at the output axis end of the motor rotor 3131, and covers the stator 3132 shell of the inner-rotor motor 313 with clearance being reserved, as shown in FIG. 6, thus the structure can also reduce the axial sizes. Similarly, the inner-rotor motor can be also driven by DC or AC power.

Embodiment 3

Embodiment 3 of the thin-type blower for the present utility model, as shown in FIG. 7 and FIG. 8, it is basically the same to Embodiment 1 and the differences lie in that: in this embodiment, the base 10 and shell 20 are connected in a relative rotating way, further comprising shell swing mechanism 50 set inside the base 10; the swing mechanism 50 comprises a rotation axis 51 fixed at the lower end of the shell 20, a pinion 52 fixed on the rotation axis 51 in a sleeve way, a speed reduction synchronous motor 54 installed in the base 10 and an centrifugal wheel 55 fixed on the output axis of the motor 54, and shift fork rack 53; the rotation axis 51 is inserted in the hole in the base 10 movably, the shift fork rack 53 includes rack 531 and shift fork 532; the centrifugal wheel 55 is situated in the shift fork 53; the pinion 52 and the rack 531 are joggled. The speed reduction synchronous motor 54 drives the rotation of the centrifugal wheel 55, while the centrifugal wheel 55 and the shift fork 532 of the shift fork rack 53 are joggled; when it rotates, the shift fork rack 531 is driven to make to-and-fro movement; the shift fork rack 531 further drives the pinion 52 to make to-and-fro rotation, thus realizing to-and-fro rotation of the shell 20. As an equivalent replacement, common technicians in this art are easy to set the shell swing mechanism in the shell so as to realize the relatively to-and-fro rotation between the shell and the base.

Another difference between this embodiment and Embodiment 1 is that the fan component 30 is two sets of thin-type axial fan 31 distributed in the upper and lower rows in a line.

Embodiment 4

Embodiment 4 of the thin-type blower for the present utility model, as shown in FIG. 9, it is basically the same to Embodiment 1 and the differences only lie in that: the fan component 30 is to adopt three sets of thin type axial fan 31, and they are distributed on a plane in the upper and lower rows in a line.

Embodiment 5

Embodiment 5 of the thin-type blower for the present utility model, as shown in FIG. 10, the embodiment is a special example; the fan component 30 only includes a thin type axial fan 31. Other structures are basically the same to Embodiment 1.