KR20090010544U - Slim type hot air blower - Google Patents

Abstract

The present invention relates to a slim hot air fan, comprising a base, a housing installed on the base and a fan, an electric component, and a heating element installed inside the housing, and the outlet and the inlet are respectively installed before and after the housing. The heating body is installed in the outlet of the fan, the housing has a flat structure, the fan in the housing is configured to include the fan parts of the slim axial flow fan, the axial flow fan is configured to include an axial flow impeller and a slim motor, The hub of the axial impeller is installed by covering the motor and fixedly connecting the axial impeller and the motor rotation part. Compared with the prior art, the present invention has advantages such as small volume, light weight, low consumption of materials, and low cost.

Hot Air Fan, Axial Flow Fan, Impeller, Housing

Description

SLIM TYPE HOT AIR BLOWER

The present invention relates to an air conditioner, and more particularly, to a hot air fan having a slim structure.

The prior art hot air fans drive air with a fan, allow the flowing air to pass through the heating elements in the apparatus, and finally send it out of the apparatus to raise the indoor air temperature and reach the purpose of heating. In order to obtain a constant heating effect, the wind speed and the air flow rate of the fan must reach a certain value, that is, must have a constant output, the size of the fan is an important factor to determine the size of the hot air fan. The conventional hot air blower has a fan output of 10 W or more, an axial size of 50 mm or more, and a very large diameter, even in the smallest mini hot air blower. Conventional hot air blowers all drive the flow of air with one AC motor (outdoor hot air blowers are not included in the "hot air blowers" of the present invention), and both have internal rotor motors in which fan blades and stators are separated from each other in the axial direction. Because of the use, the axial size of the fan is large. Constrained by fan size, these types of hot air blowers are large in size, most of them thicker than 100mm, high in consumption of plastic and metal materials, more copper wire in AC motors, and very high in electricity consumption. Resource consumption is detrimental to economic development. And the high consumption of materials improves manufacturing costs and puts a heavy burden on consumers. On the other hand, AC motors are difficult to control and are difficult to shift, and AC motors used in home appliances are generally only capable of three-step shifting, and are difficult to realize stepless shifting. The AC motor uses 200V of electricity, and the stability is different, so the insulation and safety measures must be reinforced, which also improves the cost.

As shown in Fig. 4, the prior art small output slim axial fan uses a rotor-type brushless DC motor in addition to the permanent magnet body, and is generally used as a cooling fan for a computer main body and various apparatuses and meters. The product is constructed by covering an impeller inner hole of an axial vane fan, i.e., a hub, by artfully covering the motor outer rotor magnetic ring so that the axial thickness of the impeller coincides with the axial length of the motor. The aroma size was greatly reduced. Some of the cooling fans are driven by flat AC motors, but until now all of these AC motors have very low output power, and the output of hot air heaters using the fan is hard to exceed 1,300 W, and the performance is already low. There is no state.

The present invention is devised to solve the above problems, and an object of the present invention is to provide a slim hot air fan having a thin thickness, a small volume, a light weight, low consumption of materials, and low cost.

In order to solve the above problems, the present invention provides a slim hot air fan, and comprises a base, a housing installed on the base and a fan, an electrical component and a heating element installed in the housing, respectively, before and after the outlet of the housing And the inlet is installed, the heating element is installed in the outlet of the fan, the housing has a flat structure, the fan in the housing comprises a fan component of the slim axial fan, the axial fan is an axial impeller and slim It is configured to include a motor, the hub of the axial flow impeller is installed to cover the motor, the fixed connection between the axial flow impeller and the motor rotation part.

The fan component comprises at least two electrically parallel or serially connected slime flue fans, each slim axial fan being installed in the same plane or in two planes intersected at obtuse angles, respectively. To meet the needs of the individual user, the fan component may comprise only one slim axial flow fan.

The slim axial fan is arranged in a straight or matrix form.

In the present invention, the slim motor may be an external rotor motor or an internal rotor motor. 1. When the slim motor is an external rotor motor, the hub of the axial flow impeller directly installs the external rotor of the external rotor motor therein and is integrally fixed by the same shaft. The slim motor may be an external rotor permanent magnet brushless DC motor or an external rotor DC motor. 2. When the slim motor is the inner rotor motor, the hub of the axial flow impeller is fixed to the end of the inner rotor motor output shaft, is maintained at a constant interval in the radial direction and is installed to cover the outside of the stator case of the inner rotor motor . The internal rotor motor is driven using a DC or AC power source.

In another embodiment of the present invention, and further comprises a housing swing device which is installed in the base, the swing device is a rotary shaft fixed to the lower end of the housing, the pinion is installed to cover the rotary shaft, the deceleration synchronous motor is installed in the base and An eccentric wheel and a fork rack fixedly mounted on the motor output shaft, the fork rack comprises a rack and a fork, the eccentric wheel is installed in the fork, and the pinion is engaged with the rack.

In yet another embodiment of the present invention, and further comprises a swing blade group and a cam slider device installed on the front of the housing, the cam slider device comprises a synchronous motor, an eccentric wheel and a slider, the eccentric wheel Is fixedly connected to the output shaft of the synchronous motor, a sliding groove is formed on the slider, the eccentric wheel is installed in the sliding groove and slidingly coupled, each swing blade of the swing blade group using the small pin Is connected to the slider.

Compared with the prior art, the slim hot air blower of the present invention has the following effects.

1. The fan part is the core part of the hot air fan, whose thickness and size are important factors in determining the overall size, weight, and material consumption of the air conditioner. Consists of fan parts, the axial size is significantly reduced compared to using a single fan, significantly reducing the volume of the hot air fan of the same size, that is, the same amount of airflow, and significantly reduced the weight of the product. The consumption of plastics and metal materials in parts such as housings is also significantly reduced, reducing the cost of products, saving resources, promoting economic development, and reducing the storage and transportation costs due to the small volume and light weight.

2. The present invention uses a permanent magnet brushless DC motor, and the efficiency is greatly improved compared to the AC motor used in the conventional hot air blower, and the electricity consumption of the first half fan is greatly reduced.

3. The permanent magnet brushless DC motor used in the present invention saves a large amount of strategic materials, and the brushless DC motor generating the same amount of air has significantly reduced consumption of steel and steel parts than conventional AC motors.

4. Since the brushless DC motor used in the present invention provides power at a DC voltage much lower than the safety voltage of 42V, the stability of the motor is also greatly improved.

Hereinafter, specific embodiments of the present invention described above will be described in more detail with reference to the accompanying drawings.

First embodiment:

As shown in Figures 1 to 4, the slim hot air blower of the first embodiment of the present invention, the base 10, the housing 20 installed on the base 10 and the fan installed inside the housing 20, electrical components It comprises a 80 and the heating body 90, the heating body 90 is installed in the front of the fan, before and after the housing 20, the outlet 22 and the inlet 21, respectively Is installed, the housing 20 has a flat structure, the fan comprises a fan component 30 of the four electrically in series or parallel slim axial flow fan 31, each of the slim axial flow The fan 31 is installed in the same plane in a matrix form, all of which comprise an axial impeller 311 and an external rotor motor 312, which can use the same output or floating output, as shown in FIG. 4. As shown, the hub 3111 of the axial impeller 311 and the external rotor motor 312 The sub-rotator permanent magnet magnetic ring 3121 is formed by the same shaft to form an integrated body. A guard net 221 is installed in the outlet 22 in the front of the housing, and in the mouth 21 in the rear. The dustproof network 211 is provided. The external rotor motor 312 is a permanent magnet brushless direct current motor, the drive power is a direct current power of 42V or less, and the output of a single motor is 10W or less. According to different user's demands, the external rotor motor can be driven by DC power source, and in recent years, the technology of the external rotor AC motor has also made great progress. The heating body 90 is a commercially available thermistor PTC resistance component, and a heating component of the present technology, such as a heating wire or a metal heat pipe with a heat radiating fin, may be used. The operation of the fan and the heating components are all powered and controlled by the electrical components 80.

The working principle and basic structure of the present embodiment are generally the same as those of the prior art heat exchanger, and the difference is that the bulky single AC fan in the conventional heat exchanger is replaced by a simple slim axial flow DC fan component that is easy to compose, thereby significantly reducing the volume and weight of the equipment. Reduction, saving material and reducing energy consumption.

Second Embodiment

As shown in FIG. 5, the second embodiment of the slim type hot air blower of the present invention is basically the same as the first embodiment, and the difference is that the protection net 221 of the front surface of the housing in the first embodiment includes a swing blade group ( 60), the upper and lower ends of each swing blade of the swing blade group 60 are rotatably connected to the housing 20 through a pin shaft, and a cam slider for driving the swing blade group 60. The device 40 is installed, and the cam slider device 40 comprises a synchronous motor 41, an eccentric wheel 42 and a slider 43, the eccentric wheel 42 having a synchronous motor 41. Is fixed to the output shaft of the slider 43, a sliding groove is formed on the slider 43, the eccentric wheel 42 is installed in the sliding groove is sliding, each swing blade of the swing blade group 60 is small The sling using pins 62 It is connected to the Ethernet (43). When the synchronous motor 41 rotates, its output shaft drives and rotates the eccentric wheel 42, thereby driving the slider 43 to reciprocate, and then swing blade group 60 through the small pin 62. Each swing blade of) is driven to reciprocate swing.

Another difference between the present embodiment and the first embodiment is that the motor of the slim axial fan 31 uses an internal rotor motor 313, the rotor 3131 of which is the center of the stator 3132 which does not move. It is fixed to the rotation, the hub 3111 of the axial impeller 311 is fixed to the output shaft end of the motor rotor 3131, and maintain a constant interval in the radial direction stator of the inner rotor motor 313 ( 3132) is installed to cover the outside of the case, as shown in Figure 6, the structure can also reduce the axial size. Likewise, the internal rotor motor can be driven using direct current or alternating current power.

Third Embodiment

As shown in Figures 7 and 8, the third embodiment of the slim hot air blower of the present invention is basically the same as the first embodiment, the difference is that in this embodiment, the base 10 and the housing 20 are relative It is rotatably connected to, and comprises a housing swing device 50 is installed in the base 10, the swing device 50 is a rotating shaft 51, the rotating shaft 51 is fixed to the lower housing 20 It is configured to include a pinion (52), which is installed to cover the cover), an eccentric wheel (55) and a fork rack (53) fixed on the output shaft of the motor (54) installed in the base, The rotating shaft 51 is inserted into and installed in an inner hole formed on the base 10 to be active, and the fork rack 53 includes a rack 531 and a fork 532, and the eccentric wheel 55 ) Is installed in the fork 53, the pinion 53 is meshed with the rack (531). Since the deceleration synchronizing motor 54 drives and rotates the eccentric wheel 55, and the eccentric wheel 55 and the fork 532 of the fork rack 53 are engaged, the rotation of the eccentric wheel 55 is fork rack ( 531 is driven to reciprocate, and the fork rack 531 drives the pinion 52 to reciprocate to realize reciprocal rotation of the housing 20. One of ordinary skill in the art may substitute the equivalent manner and install the housing swing device in the housing to realize relative reciprocating rotation of the housing and the base.

Another feature of the present embodiment and the first embodiment is that the fan component 30 is two slim axial fans 31 arranged in a straight line.

Fourth embodiment:

As shown in Fig. 9, the fourth embodiment of the slim hot air blower of the present invention is basically the same as the first embodiment, except that only the fan component 30 uses three slim axial fans 31. They are arranged in a straight line and installed in the same plane up and down.

Fifth Embodiment

As shown in Fig. 10, the fifth embodiment of the slim hot air blower of the present invention is a special case, in which the fan component 30 includes only one slim axial fan 31. The other structure is basically the same as that of the first embodiment.

1 is a perspective view of a side cross-sectional structure passing through an axis of a fan in a perpendicular projection of a first embodiment of a slim hot air fan of the present invention;

Fig. 2 is a perspective view of the main structure of the orthogonal projection of the first embodiment of the hot air blower;

3 is a perspective view of an axial projection structure of the first embodiment of the hot air blower;

Figure 4 is an enlarged perspective view of the side cross-sectional structure of a single external rotor axial flow fan used in the first embodiment of the hot air fan.

Fig. 5 is a side sectional perspective view of a structure passing through the axis of the fan in the orthogonal projection of the second embodiment of the slim hot air fan of the present invention;

Figure 6 is an enlarged perspective view of the side cross-sectional structure of a single external rotor axial flow fan used in the second embodiment of the hot air fan.

Figure 7 is a side cross-sectional structure perspective view passing through the axis of the fan of the orthogonal projection of the third embodiment of the slim hot fan of the present invention.

Fig. 8 is a perspective view of a top-down enlarged structure of the swing device of the third embodiment of the hot air blower;

9 is a perspective view of a main structure of a right angle projection of a fourth embodiment of the slim hot air fan of the present invention.

10 is a perspective view of a main structure of a right angle projection of a fifth embodiment of the slim type hot air blower of the present invention.

Claims (9)

It includes a base, a housing installed on the base, and a fan, an electric component, and a heating element installed inside the housing, and an outlet and an inlet are respectively installed before and after the housing, and the heating element is installed in the outlet of the fan. The housing has a flat structure, and the fan in the housing includes a fan component of a slim axial fan, the axial fan includes an axial impeller and a slim motor, and the hub of the axial impeller covers the motor. It is installed, the slim type hot fan, characterized in that the fixed connection between the axial flow impeller and the motor rotation part. The method of claim 1, The fan component comprises at least two electrically parallel or serially connected thin-fluid fans, wherein each of the slim axial fans is installed in the same plane or in two planes intersected at obtuse angles, respectively. Heat exchanger. The method of claim 2, The slim axial fan is a slim hot air fan, characterized in that arranged in a straight or matrix form. The method according to any one of claims 1 to 3, The slim motor is an external rotor motor, and the hub of the axial flow impeller is directly inserted into the external rotor of the external rotor motor therein, and is also formed integrally fixed by the same shaft. The method of claim 4, wherein The slim motor is an external rotor permanent magnet brushless DC motor or an external rotor DC motor. The method according to any one of claims 1 to 3, When the slim motor is the inner rotor motor, the hub of the axial flow impeller is fixed to the end of the inner rotor motor output shaft, it is installed to cover the outside of the stator case of the inner rotor motor while maintaining a constant interval in the radial direction Slim hot air fan made with. The method of claim 6, The internal rotor motor is a slim hot fan, characterized in that for driving by using a DC or AC power source. The method according to any one of claims 1 to 3, And a housing swing device installed in the base, wherein the swing device includes a rotary shaft fixed to the lower end of the housing, a pinion installed to cover the rotary shaft, an eccentric motor fixed on the motor output shaft and a deceleration synchronous motor installed in the base. And a fork rack, wherein the fork rack comprises a rack and a fork, the eccentric wheel is installed in the fork, and the pinion is engaged with the rack. The method according to any one of claims 1 to 3, And a cam blade device and a swing blade group installed at the front of the housing, wherein the cam slider device comprises a synchronous motor, an eccentric wheel and a slider, and the eccentric wheel is connected to and fixed to the output shaft of the synchronous motor. And a sliding groove is formed on the slider, and the eccentric wheel is installed in the sliding groove and is coupled to the sliding groove, and each swing blade of the swing blade group is connected to the slider using a small pin. .

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