CN104659960A - Gas blower - Google Patents

Abstract

A gas blower device having a heat dissipating impeller to improve heat dissipation efficiency of internal components of the gas blower device, the gas blower device comprising: a housing, the housing containing a fan wheel therein; a motor, including a base and a rotating shaft, the base is connected with the shell, the rotating shaft is pivoted on the base and combined with the fan wheel; the circuit board is combined with the motor and provided with a first surface and a second surface which are opposite, the first surface faces to the base of the motor, and an accommodating space is formed between the first surface and the base; and a heat-dissipating impeller disposed between the first surface and the base, wherein a rotating shaft of the motor protrudes into the accommodating space to combine with the heat-dissipating impeller.

Description

Gas blower

technical field

The present invention relates to a gas blowing device, in particular to a gas blowing device capable of providing heat dissipation to its internal components by means of a heat dissipation impeller.

Background technique

Please refer to Fig. 1, German Patent Publication No. 10204037 patent discloses a kind of existing gas blowing device 9, comprises a casing 91 and a motor 92, and this casing 91 houses a fan wheel 911 inside, and this motor 92 includes a base 921 and a rotating shaft 922 , the base 921 is connected to the housing 91 , the rotating shaft 922 is pivotally mounted on the base 921 and combined with the fan wheel 911 of the housing 91 . Thereby, the rotating shaft 922 can drive the fan wheel 911 to rotate, so as to suck gas from an air inlet of the casing 91 and output it from an exhaust port, so that the existing gas blowing device 9 has the function of conveying gas . The existing gas blast device 9 can be used to transport flammable gases such as coal gas or natural gas; or transport toxic gases such as nitric oxide and hydrogen sulfide. For this reason, the existing gas blowing device 9 is usually provided with a sealing member 93 between the housing 91 and the base 921, so that the housing 91 forms an airtight seal to avoid the gas inhaled when the fan wheel 911 rotates. Diffusion into the motor 92 to eliminate the risk of flammable or toxic gases escaping.

The motor 92 is also combined with a circuit board 94 to control the operation of the motor 92. However, when the motor 92 was in operation, the heat generated by the electronic components on the surface of the circuit board 94 was blocked by the sealing member 93 and could not be used by the fan wheel. The airflow formed when the 911 rotates is discharged, so that when the existing gas blowing device 9 is used, the circuit board 94 will continue to be in a high temperature state, resulting in a sharp reduction in the service life of the electronic components, and then the existing gas blowing device 9 will continue to be in a high temperature state. The durability of the wind device 9 is negatively affected. In order to avoid the above-mentioned problems, the existing gas blowing device 9 offers a through hole 941 on the circuit board 94. The through hole 941 is aligned with the rotating shaft 922 of the motor 92, and a heat dissipation impeller 95 is additionally provided. The heat dissipation impeller 95 Combined with the rotating shaft 922 and accommodated in the through hole 941 . In this way, when the rotating shaft 922 drives the fan wheel 911, it will synchronously drive the heat dissipation impeller 95 to rotate, so that the heat dissipation impeller 95 generates an airflow flowing along the radial direction of the rotating shaft 922, so as to protect the electrons on the surface of the circuit board 94. components to dissipate heat.

Opening the through hole 941 on the circuit board 94 will reduce the available surface area of the circuit board 94 , making it more difficult to route the electronic components on the surface of the circuit board 94 . Furthermore, due to the reduction of the surface area of the circuit board 94, the distribution density of the electronic components must be increased accordingly, which will lead to a significant increase in the heat generation density of the circuit board 94. Therefore, it is difficult for the heat dissipation impeller 95 to effectively remove the circuit board 94. surface thermal energy. In addition, the heat dissipation impeller 95 generates airflow flowing along the radial extension direction of the rotating shaft 922 to dissipate heat from the circuit board 94, but the electronic components are distributed on the surface of the circuit board 94, so the heat dissipation impeller 95 produces Although the airflow has a suitable heat dissipation effect for the electronic components adjacent to the through hole 941, the electronic components far away from the through hole 941 cannot be directly hit by the air flow because they are easily blocked, resulting in the heat dissipation that the heat dissipation impeller 95 can provide. The effect is limited.

To sum up, the existing gas blowing device 9 has difficulty in routing electronic components and poor heat dissipation effect, and it is urgent to provide a further improved gas blowing device to improve the heat dissipation efficiency of the existing gas blowing device.

Contents of the invention

An object of the present invention is to provide a gas blowing device, by means of a motor base and a circuit board between a heat dissipation impeller, and a rotating shaft of the motor combined with the heat dissipation impeller, so that the rotating shaft can rotate Synchronously drives the heat dissipation impeller to rotate, and then generates an airflow flowing along the axial extension direction of the rotating shaft, which is used to dissipate heat from the electronic components arranged on the surface of the circuit board to improve the heat dissipation effect.

Another object of the present invention is to provide a gas blowing device. The circuit board has a first surface and a second surface facing each other. A through hole is opened through the first surface and the second surface so that the heat dissipation impeller The generated airflow can pass through the through hole and dissipate heat from the electronic components disposed on the first surface and the second surface, which has the effect of reducing the difficulty of routing electronic components.

Another object of the present invention is to provide a gas blowing device, the heat dissipation impeller is opposite to a stator combined with the base, so that the heat dissipation impeller can simultaneously dissipate heat from the circuit board and the stator during operation, and has the function of lifting gas Efficacy of the overall service life of the blower unit.

In order to achieve the aforementioned object of the invention, the technical means employed in the present invention include:

A gas blowing device, comprising: a shell housing a fan wheel; a motor comprising a base and a rotating shaft, the base is connected to the housing, and the rotating shaft is pivoted on the The base is combined with the fan wheel; a circuit board is combined with the motor, the circuit board has a first surface and a second surface opposite, the first surface faces the base of the motor, and the first surface An accommodating space is formed between the base and the base; and a heat dissipation impeller is arranged between the first surface and the base, and the rotating shaft of the motor protrudes into the accommodating space to combine with the heat dissipation impeller.

The above-mentioned gas blowing device, wherein, there is also a shell seat for accommodating the motor, the circuit board and the heat dissipation impeller, and the shell seat is provided with an axial vent, and the axial vent is connected with the circuit The second surface of the board is opposite.

The above-mentioned gas blowing device, wherein, the shell base further defines a radial vent, and the radial vent is opposite to the accommodating space.

The gas blowing device as described above, wherein the base is combined with a stator, and the cooling impeller is opposite to the stator.

A gas blowing device, comprising: a casing, a fan wheel is housed inside the casing; a motor, the motor includes a base and a rotating shaft, the base is connected with the casing, and the rotating shaft is pivoted The fan wheel is combined with the base; a circuit board is combined with the motor, the circuit board has a first surface and a second surface opposite, the first surface faces the base, and the circuit board is additionally provided a through hole passing through the first surface and the second surface, the through hole is opposite to the rotating shaft of the motor; and a heat dissipation impeller is arranged towards the second surface of the circuit board, and the rotating shaft of the motor passes through the through holes to combine the cooling impeller.

The above-mentioned gas blowing device, wherein, a casing is further provided for accommodating the motor, the circuit board and the heat dissipation impeller, and an accommodating space is formed between the second surface of the circuit board and the casing , the heat dissipation impeller is arranged between the second surface and the housing seat, and the rotating shaft of the motor protrudes into the accommodating space through the through hole to combine with the heat dissipation impeller.

The gas blowing device as described above, wherein, the shell base defines an axial vent, and the axial vent is opposite to the second surface of the circuit board.

The above-mentioned gas blowing device, wherein, the shell base further defines a radial vent, and the radial vent is opposite to the accommodating space.

The gas blowing device as described above, wherein the base is combined with a stator, the circuit board is combined between the base and the stator, and the first surface and the second surface of the circuit board are respectively facing the base and the the stator.

The above-mentioned gas blowing device, wherein, the cooling impeller is opposite to the stator.

In the gas blowing device of the present invention, the fan wheel and the heat dissipation impeller are respectively combined with two ends of the rotating shaft.

In the gas blowing device of the present invention, the first surface or the second surface of the circuit board is provided with electronic components.

In the gas blowing device of the present invention, both the first surface and the second surface of the circuit board are provided with electronic components.

In the gas blowing device of the present invention, the circuit board is provided with a through hole passing through the first surface and the second surface.

In the gas blowing device of the present invention, the rotation range of the heat dissipation impeller has an outer diameter, and the outer diameter of the rotation range is larger than the diameter of the through hole.

In the gas blowing device of the present invention, the rotation range of the heat dissipation impeller has an outer diameter, and the outer diameter of the rotation range is larger than the diameter of the through hole.

With the help of the above structure, the gas blowing device of the present invention can indeed achieve many functions such as improving the heat dissipation effect, reducing the difficulty of wiring electronic components, and improving the service life.

Description of drawings

Fig. 1 is a structural sectional view of a conventional gas blowing device.

Fig. 2 is a structural sectional view of the first preferred embodiment of the present invention.

Fig. 3 is a structural sectional view of the second preferred embodiment of the present invention.

Fig. 4 is a structural sectional view of a third preferred embodiment of the present invention.

【Symbol Description】

〔this invention〕

1 shell 11 fan wheel 12 air inlet

13 Exhaust port 2 Motor 21 Base

211 stator 22 shaft 3 circuit board

3a first surface 3b second surface 31 through hole

32 through holes 4 cooling impellers 5 housings

51 Axial Vent 52 Radial Vent R Accommodating Space

R’Accommodating space rOuter diameter of the rotation range

〔current technology〕

9 Gas Blowing Device 91 Housing 911 Fan Wheel

92 motor 921 base 922 shaft

93 seal 94 circuit board 941 through hole

95 cooling impeller.

Detailed ways

In order to make the above-mentioned and other objects, features and advantages of the present invention more obvious and understandable, the preferred embodiments of the present invention are specifically cited below, together with the accompanying drawings, and are described in detail as follows:

Please refer to FIG. 2 , the gas blowing device according to the first preferred embodiment of the present invention includes a casing 1 and a motor 2 combined with each other. Wherein, the housing 1 accommodates a fan wheel 11, and the housing 1 is provided with an air inlet 12 and an exhaust port 13 communicating with the fan wheel 11; the motor 2 includes a base 21 and a rotating shaft 22 , the base 21 can be combined with a stator 211 , and the rotating shaft 22 is pivotally disposed in the base 21 . The motor 2 is combined with the housing 1 through the base 21 , and the rotating shaft 22 protrudes into the housing 1 to be combined with the fan wheel 11 . Thereby, when the rotating shaft 22 rotates, it can also drive the fan wheel 11 to rotate. In this embodiment, the motor 2 is an inner rotor motor, however, the motor 2 can also be an outer rotor motor, which is not limited by the present invention.

The motor 2 is combined with a circuit board 3, the circuit board 3 is preferably combined with the base 21 or the stator 211 of the motor 2, and has a first surface 3a and a second surface 3b opposite, the first surface 3a It faces the base 21 of the motor 2 , and an accommodating space R is formed between the first surface 3 a and the base 21 . The gas blowing device of the first preferred embodiment further includes a heat dissipation impeller 4, the heat dissipation impeller 4 is arranged between the first surface 3a and the base 21, and the rotating shaft 22 of the motor 2 protrudes into the housing. Set the space R to combine the cooling impeller 4. In other words, the fan wheel 11 in the housing 1 and the cooling impeller 4 are respectively combined with two ends of the rotating shaft 22 . Thereby, when the rotating shaft 22 rotates, the fan wheel 11 and the cooling impeller 4 can be synchronously driven to rotate.

The gas blowing device of the first preferred embodiment drives the rotating shaft 22 to rotate by means of the stator 211 of the motor 2, which can also drive the fan wheel 11 in the housing 1 to rotate, so that the gas from the housing 1 enters The air port 12 sucks in and outputs from the exhaust port 13, effectively achieving the function of gas delivery. At the same time, the rotating shaft 22 can synchronously drive the heat dissipation impeller 4 to rotate, so that the heat dissipation impeller 4 generates an airflow flowing along the axial extension direction of the rotating shaft 22, so that the electronic components disposed on the first surface 3a of the circuit board 3 For heat dissipation, the electronic components include passive components such as resistors or capacitors, transistors or single-chip active components, and inductive components such as Hall elements or encoders. In addition, since the coils or iron cores included in the stator 211 may generate heat due to energy losses such as copper loss, hysteresis loss, or eddy current loss, the heat dissipation impeller 4 is preferably opposite to the stator 211 combined with the base 21 position, so that the heat dissipation impeller 4 can simultaneously dissipate heat to the stator 211 during operation.

It is worth noting that if the second surface 3b of the circuit board 3 is also provided with electronic components, the circuit board 3 can be provided with a through hole 31 passing through the first surface 3a and the second surface 3b, so that the heat generated by the heat dissipation impeller 4 The airflow can pass through the through hole 31 and dissipate heat from the electronic components disposed on the second surface 3b. Specifically, the gas blowing device of the first preferred embodiment can also be provided with a casing 5 for accommodating the motor 2, the circuit board 3 and the heat dissipation impeller 4, and the casing 5 is provided with an axial The vent 51 , the axial vent 51 can be opposite to the second surface 3 b of the circuit board 3 . Accordingly, the airflow generated by the cooling impeller 4 and flowing along the axial extension direction of the rotating shaft 22 can pass through the axial vent 51 and the through hole 31 of the circuit board 3 to the first surface 3a and the second surface respectively. The electronic components arranged in 3b perform heat dissipation.

Furthermore, the shell seat 5 preferably further defines a radial vent 52, and the radial vent 52 can be opposite to the accommodating space R, so that when the cooling impeller 4 is driven by the rotating shaft 22 to rotate, it can The air is introduced through the axial vent 51 to form an airflow flowing along the axial extension direction of the rotating shaft 22, and is discharged from the housing 5 through the through hole 31 of the circuit board 3 and the radial vent 52 in sequence, Reach the effect of getting rid of the heat energy generated by the circuit board 3 and the stator 211; yet, when the heat dissipation impeller 4 rotates, the air can also be discharged through the radial vent 52 and from the axial vent 51, the heat dissipation impeller 4 The flow direction of the generated airflow depends on its design, and the present invention is not limited thereto.

In addition, the rotation range of the heat dissipation impeller 4 has an outer diameter r, and the outer diameter r of the rotation range is preferably larger than the aperture diameter of the through hole 31 of the circuit board 3, so as to avoid the rapid air flow generated by the heat dissipation impeller 4. Passing through the through hole 31 loses the heat dissipation effect of the electronic components on the first surface 3a or the second surface 3b. The generated part of the airflow blows directly to the circuit board 3 .

With the above structure, the gas blowing device of the first preferred embodiment of the present invention is provided with a heat dissipation impeller 4 between the base 21 of a motor 2 and a circuit board 3, and protrudes from a rotating shaft 22 of the motor 2 Into an accommodating space R formed between the circuit board 3 and the base 21 to combine the heat dissipation impeller 4, so that when the rotating shaft 22 rotates, it can synchronously drive the heat dissipation impeller 4 to rotate, thereby generating a shaft along the rotating shaft 22. The airflow flowing in the extending direction effectively dissipates heat to the electronic components arranged on the surface of the circuit board 3 . Accordingly, compared with the radiating impeller 95 of the existing gas blowing device 9 shown in above-mentioned FIG. The device can evenly dissipate heat from the electronic components arranged on the surface of the circuit board 3 , and indeed has the effect of improving the heat dissipation effect.

Furthermore, the circuit board 3 of the gas blowing device according to the first preferred embodiment of the present invention has a first surface 3a and a second surface 3b facing each other, and the circuit board 3 which penetrates the first surface 3a and the second surface 3b is used. A through hole 31 enables the airflow generated by the heat dissipation impeller 4 to pass through the through hole 31 and dissipate heat to the electronic components disposed on the first surface 3 a and the second surface 3 b. In this way, compared with the circuit board 94 of the existing gas blowing device 9, a through hole 941 must be opened for accommodating the heat dissipation impeller 95, so that the heat dissipation impeller 95 can be used to dissipate heat from the electronic components on both sides of the circuit board 94. , seriously increase the wiring difficulty of the electronic components on the surface of the circuit board 94, the through hole provided by the circuit board 3 of the gas blast device of the present invention only provides a ventilation function, and does not need to accommodate the cooling impeller 4, effectively reducing the need for the circuit board 94. The effect of the available area of the board 3 does have the effect of reducing the difficulty of routing electronic components.

In addition, the heat dissipation impeller 4 of the gas blowing device of the first preferred embodiment of the present invention is opposite to a stator 211 combined with the base 21, so that the heat dissipation impeller 4 can simultaneously control the circuit board 3 and the stator when it is in operation. 211 to dissipate heat, compared with the heat dissipation impeller 95 of the existing gas blast device 9, which can only simply dissipate heat to the circuit board 94, the stator coil or iron core of the motor 92 may be in a high temperature state for a long time and cause a negative impact on the service life , the gas blowing device of the present invention does have the effect of improving the overall service life of the gas blowing device.

Please refer to FIG. 3 , which is the second preferred embodiment of the gas blowing device of the present invention. The difference from the aforementioned first preferred embodiment is that the heat dissipation impeller 4 is arranged toward the second surface 3 b of the circuit board 3 . . More specifically, the circuit board 3 is disposed in the housing 5 and combined with the motor 2, the first surface 3a also faces the base 21, and a gap is formed between the second surface 3b and the housing 5. The circuit board 3 further defines a through hole 32 passing through the first surface 3 a and the second surface 3 b to accommodate the space R′, and the through hole 32 is opposite to the rotating shaft 22 of the motor 2 . Thereby, the heat dissipation impeller 4 can be disposed between the second surface 3b and the housing 5, and the rotating shaft 22 of the motor 2 passes through the through hole 32 to protrude into the accommodating space R' and combine the heat dissipation impeller 4.

According to the aforementioned structure, the gas blowing device of the second preferred embodiment can also synchronously drive the heat dissipation impeller 4 to rotate by means of the rotating shaft 22, so that the heat dissipation impeller 4 generates an airflow flowing along the axial extension direction of the rotating shaft 22, so as to The electronic components provided on the second surface 3b of the circuit board 3 dissipate heat; the circuit board 3 can also offer a through hole 31 passing through the first surface 3a and the second surface 3b, so that the airflow generated by the heat dissipation impeller 4 The electronic components disposed on the first surface 3 a and the stator 211 of the motor 2 can dissipate heat through the through hole 31 . The outer diameter r of the rotation range of the heat dissipation impeller 4 is preferably larger than the diameters of the through hole 31 and the through hole 32 to ensure that part of the airflow generated by the heat dissipation impeller 4 blows directly to the circuit board 3 .

Please also refer to Fig. 4, which is the third preferred embodiment of the present invention gas blowing device, and the second preferred embodiment is different in that: the circuit board 3 is combined with the base 21 of the motor 2 and Between the stators 211 , and the first surface 3 a and the second surface 3 b of the circuit board 3 face the base 21 and the stator 211 respectively. Thereby, the heat dissipation fan 4 can be opposite to the stator 211 combined with the base 21, and the airflow generated when the heat dissipation impeller 4 is running can dissipate heat from the stator and the electronic components disposed on the second surface 3b respectively. On the other hand, compared with the second preferred embodiment, the circuit board 3 is arranged between the base 21 and the stator 211 to increase the distance between the circuit board 3 and the heat dissipation impeller 4, so as to avoid the heat dissipation The electronic components on the circuit board 3 are disturbed when the impeller 4 is in operation.

To sum up, the gas blowing device of the present invention can indeed achieve many effects such as improving the heat dissipation effect, reducing the wiring difficulty of electronic components, and improving the service life.

The above is only a preferred embodiment of the present invention, and should not limit the implementation scope of the present invention; therefore, all simple equivalent changes and modifications made according to the patent scope of the present invention and the contents of the creation instructions, All should still fall within the scope covered by the patent of the present invention.

Claims (20)

1. a gas air-blast device, is characterized in that, comprises:

A housing, the accommodating impeller of this enclosure interior;

A motor, comprise a pedestal and a rotating shaft, this pedestal is connected with this housing, and this rotating shaft is hubbed at this pedestal and in conjunction with this impeller;

A circuit board, is incorporated into this motor, and this circuit board has in relative first surface and a second surface, and this first surface towards the pedestal of this motor, and forms an accommodation space between this first surface and this pedestal; And

A heat-dissipating impeller, is arranged between this first surface and this pedestal, and the rotating shaft of this motor protrudes into this accommodation space with in conjunction with this heat-dissipating impeller.

2. gas air-blast device as claimed in claim 1, it is characterized in that, this impeller and this heat-dissipating impeller are incorporated into two ends of this rotating shaft respectively.

3. gas air-blast device as claimed in claim 1, it is characterized in that, the first surface of this circuit board is provided with electronic component.

4. gas air-blast device as claimed in claim 1, is characterized in that, this pedestal in conjunction with a stator, this heat-dissipating impeller and this stator phase contraposition.

5. gas air-blast device as claimed in claim 1, it is characterized in that, be separately provided with a shell block in order to this motor accommodating, this circuit board and this heat-dissipating impeller, this shell block offers an axial ventilation mouth, the second surface phase contraposition of this axial ventilation mouth and this circuit board.

6. gas air-blast device as claimed in claim 5, it is characterized in that, this shell block separately offers a radial ventilation mouth, this radial ventilation mouth and this accommodation space phase contraposition.

7. gas air-blast device as claimed in claim 1, it is characterized in that, this circuit board offers a perforation of this first surface through and this second surface.

8. the gas air-blast device as described in claim 5,6 or 7, is characterized in that, the second surface of this circuit board is provided with electronic component.

9. gas air-blast device as claimed in claim 7, it is characterized in that, the rotating range of this heat-dissipating impeller has an external diameter, and the external diameter of this rotating range is greater than the aperture of this perforation.

10. a gas air-blast device, is characterized in that, comprises:

A housing, the accommodating impeller of this enclosure interior;

A motor, this motor comprises a pedestal and a rotating shaft, and this pedestal is connected with this housing, and this rotating shaft is hubbed at this pedestal and in conjunction with this impeller;

A circuit board, be incorporated into this motor, this circuit board has in relative first surface and a second surface, and this first surface is towards this pedestal, a through hole of this first surface through and this second surface separately offered by this circuit board, the rotating shaft phase contraposition of this through hole and this motor; And

A heat-dissipating impeller, the second surface towards this this circuit board is arranged, and the rotating shaft of this motor through this through hole with in conjunction with this heat-dissipating impeller.

11. gas air-blast devices as claimed in claim 10, it is characterized in that, separately be provided with a shell block in order to this motor accommodating, this circuit board and this heat-dissipating impeller, an accommodation space is formed between the second surface of this circuit board and this shell block, this heat-dissipating impeller is arranged between this second surface and this shell block, and the rotating shaft of this motor protrudes into this accommodation space with in conjunction with this heat-dissipating impeller via this through hole.

12. gas air-blast devices as claimed in claim 10, it is characterized in that, this impeller and this heat-dissipating impeller are incorporated into two ends of this rotating shaft respectively.

13. gas air-blast devices as claimed in claim 10, it is characterized in that, the second surface of this circuit board is provided with electronic component.

14. gas air-blast devices as claimed in claim 11, it is characterized in that, this shell block offers an axial ventilation mouth, the second surface phase contraposition of this axial ventilation mouth and this circuit board.

15. gas air-blast devices as claimed in claim 14, it is characterized in that, this shell block separately offers a radial ventilation mouth, this radial ventilation mouth and this accommodation space phase contraposition.

16. gas air-blast devices as described in claim 10,11,12,13,14 or 15, it is characterized in that, this circuit board offers a perforation of this first surface through and this second surface.

17. gas air-blast devices as claimed in claim 16, it is characterized in that, the rotating range of this heat-dissipating impeller has an external diameter, the external diameter of this rotating range is greater than the aperture of this through hole and the aperture of this perforation.

18. gas air-blast devices as claimed in claim 16, it is characterized in that, the first surface of this circuit board is provided with electronic component.

19. gas air-blast devices as described in claim 10,11,12,13,14 or 15, it is characterized in that, this pedestal is in conjunction with a stator, and this circuit board is incorporated between this pedestal and this stator, and the first surface of this circuit board and second surface are respectively towards this pedestal and this stator.

20. gas air-blast devices as claimed in claim 19, is characterized in that, this heat-dissipating impeller and this stator phase contraposition.