Double-air-duct fan module and fan

Abstract

The double-air-duct fan module comprises a left volute, a right volute and two air wheels, the first air wheel is arranged in the left volute, the second air wheel is arranged in the right volute, a left air duct is formed by covering the left volute with a left air cover cap, and a right air duct is formed by covering the right volute with a right air cover cap. Air outlets are formed in the top surfaces of the left air duct and the right air duct; the driving device comprises a brushless motor, a metal driving shaft, a magnetic ring and a concentricity correcting sleeve, the brushless motor and the magnetic ring are arranged in an inner cavity of a wind wheel and are coaxially arranged with the wind wheel, and the magnetic ring is fixed in the inner cavity of the wind wheel and is arranged outside the brushless motor in a sleeving manner; one end of the metal driving shaft is coaxially connected with the brushless motor, the metal driving shaft penetrates through the containing cavity, the other end of the metal driving shaft is coaxially connected with the other wind wheel, and the concentricity correcting sleeve is arranged at the other end of the metal driving shaft in a sleeving mode. The driving device is ingeniously matched with the fan cover assembly and the two wind wheels in structure, performance is stable, noise is low, and cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to turbo blower technical field, in particular to a double air duct turbocharging type blower module. BACKGROUND

[0002] The blower is mostly driven by motor to realize the single direction of air supply or exhaust. But in the actual use scene, there is the demand of air supply or exhaust to two directions at the same time. In order to meet this demand, one technical scheme of the prior art is to use two fans to supply air through the respective air duct, and the structure of this double fan is high in cost and large in size. In order to solve the deficiency of this scheme, CN210397174 discloses a bidirectional drainage fan with double air duct structure, which sets the upper and lower stacked double air duct volutes, sets the independent impeller in the two volutes respectively, and drives one impeller through one double-shaft extension motor at both ends respectively, to realize that one motor drives two impellers at the same time. However, CN210397174 uses the double-shaft extension motor, which is high in motor performance requirement and still high in cost. SUMMARY

[0003] The utility model solves the technical problem, in view of the above-mentioned defects of prior art, proposes a kind of double air duct fan module and fan using single motor, reduce cost, simple structure.

[0004] The utility model discloses the technical scheme that adopts for solving its technical problem:

[0005] Provide a kind of double air duct fan module, including shroud assembly and the driving device and two impellers of being set in the shroud assembly, the shroud assembly includes shroud main body, left shroud cover and right shroud cover, the shroud main body includes left volute, right volute and the accommodating cavity between left volute and right volute, first impeller is set in left volute, second impeller is set in right volute, the left shroud cover is used to cover left volute and form left air duct, the right shroud cover is used to cover right volute and form right air duct, left air duct and right air duct side are each equipped with air inlet, top surface is each equipped with air outlet;The driving device includes brushless motor, metal driving shaft, magnetic ring and concentricity correction sleeve, the brushless motor and magnetic ring are set in a impeller inner chamber and are coaxially arranged with this impeller, the magnetic ring is fixed in the impeller inner chamber and is set outside the brushless motor;Metal driving shaft one end is coaxially connected with the brushless motor, the metal driving shaft passes through the accommodating cavity, and the other end is coaxially connected with another impeller, and the concentricity correction sleeve is set on the other end of the metal driving shaft.

[0006] Further:

[0007] Metal shaft sleeve is arranged between the one end of the metal driving shaft and the brushless motor, and metal shaft sleeve is arranged between the other end of the metal driving shaft and the concentricity correction sleeve.

[0008] The two ends of the metal driving shaft are respectively provided with silica gel rings between the wind wheels.

[0009] The left volute cover and the left volute and the right volute cover and the right volute are connected through the cooperation of the grooves and the protrusions.

[0010] The anion generator is fixed on the wind cover body, and the emitting port of the anion generator is close to the air outlet.

[0011] The anion generator is arranged on the bottom plate between the left volute and the right volute outside the wind cover body.

[0012] The wind wheel is provided with a partition ring baffle in the middle.

[0013] The wind wheel is provided with a blade extension step at the end of each blade.

[0014] The utility model provides a fan, including casing and the double air duct fan module group of any one of the above, the double air duct fan module group sets up in the lower part of casing, and the lower part of casing both sides are equipped with with the air inlet of double air duct fan module group side air inlet intercommunication respectively, and the upper part of casing includes two independent air ducts respectively with double air duct fan module group top air outlet intercommunication, and the front of two air ducts is equipped with air outlet respectively.

[0015] The casing comprises a front shell, a rear shell, a left side plate and a right side plate, the upper part of the front shell, the upper part of the rear shell and the left side plate form a first air duct, and the right side plate forms a second air duct; the air inlets are arranged below the left side plate and the right side plate respectively.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the driving device comprising a brushless motor, a metal driving shaft, a magnetic ring and a concentricity correction sleeve is matched with the structure of the fan cover assembly and two wind wheels, stable in performance, safe to use, low in noise, long in service life and low in cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure exploded schematic view of the double air duct fan module group embodiment of the utility model;

[0018] Figure 2 It is a three-dimensional structure schematic view of the double air duct fan module group embodiment of the utility model;

[0019] Figure 3 It is a structure cross section schematic view of the double air duct fan module group embodiment of the utility model;

[0020] Figure 4 It is a right side wind wheel blade schematic view of the double air duct fan module group embodiment of the utility model;

[0021] Figure 5 This is a schematic diagram of the left wind wheel blade of the dual-duct fan module embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the installation position of the positive and negative ion generator device of the dual-duct fan module embodiment of the present utility model;

[0023] Figure 7 This is a schematic diagram of the locations of the emission nozzles of the positive and negative ion generators of an embodiment of the dual-duct fan module of the present utility model;

[0024] Figure 8 This is a schematic diagram of the external connection air duct opening of the dual-duct fan module embodiment of the present utility model;

[0025] Figure 9 This is a three-dimensional schematic diagram of an embodiment of a fan of the present utility model;

[0026] Figure 10 This is an exploded schematic diagram of an embodiment of a fan of the present utility model;

[0027] Figure 11 This is a schematic diagram of a dual-air duct wind path of an embodiment of the fan of the present utility model;

[0028] Figure 12 This is a schematic diagram of the air outlet of a fan embodiment of the present invention.

[0029] Dual air duct module 100, hood body 111, left volute 1111, right volute 1112, accommodating chamber 1113, left hood cover 112, first air inlet 1121, first air outlet 1122, first protrusion 1123, right hood cover 113, second air inlet 1131, second air outlet 1132, second protrusion 1133, annular connecting step structure F, first wind wheel 130, second wind wheel 140, Brushless motor 121, metal drive shaft 122, magnetic ring 123, concentricity correction sleeve 124, metal sleeve 125, silicone ring 126, negative ion generator 150, negative ion generator emission port 151, partition ring baffle B, shell 200, air inlet 210, air outlet 230, front shell 240, rear shell 250, left side plate 260, right side plate 270, first air duct 280, second air duct 290. DETAILED DESCRIPTION

[0030] Now, in conjunction with the accompanying drawings, the preferred embodiments of the present utility model will be described in detail.

[0031] A dual duct module 100, such as Figures 1 to 6 As shown (where Figure 1 、 Figure 3 and Figure 6The double air duct module is placed upside down, and comprises a shroud assembly and a driving device and two wind wheels 130, 140 arranged in the shroud assembly. The shroud assembly comprises a shroud body 111, a left shroud cover 112 and a right shroud cover 113, the shroud body 111 comprises a left volute 1111, a right volute 1112 and a receiving cavity 1113 between the left volute and the right volute. The first wind wheel 130 is arranged in the left volute 1111, and the second wind wheel 140 is arranged in the right volute 1112. The left shroud cover 112 is used for covering the left volute 1111 to form a left air duct, and the right shroud cover 113 is used for covering the right volute 1112 to form a right air duct. The left shroud cover 112 is provided with a first air inlet 1121 on the side surface and a first air outlet 1122 on the top surface, and the right shroud cover 113 is provided with a second air inlet 1131 on the side surface and a second air outlet 1132 on the top surface. The driving device comprises a brushless motor 121, a metal driving shaft 122, a magnetic ring 123 and a concentricity correction sleeve 124. The brushless motor 121 and the magnetic ring 123 are arranged in the inner cavity of one of the wind wheels and are coaxially arranged with the wind wheel. The magnetic ring 123 is fixed in the inner cavity of the wind wheel and is sleeved outside the brushless motor 121. One end of the metal driving shaft 122 is coaxially connected with the brushless motor 121, the metal driving shaft 122 penetrates through the receiving cavity 1113, and the other end of the metal driving shaft 122 is coaxially connected with the other wind wheel. The concentricity correction sleeve 124 is sleeved on the other end of the metal driving shaft 122, and the outer surface is designed to be toothed. The concentricity correction sleeve 124 is made of silica gel, which can reduce eccentric shaking of the fan during work, reduce power consumption and reduce noise and shock absorption.

[0032] In the embodiment, the brushless motor 121 and the magnetic ring 123 are arranged in the inner cavity of the second wind wheel 140, and in other embodiments, the brushless motor 121 and the magnetic ring 123 can also be arranged in the inner cavity of the first wind wheel 130.

[0033] During work, the brushless motor 121 is powered on, the wind wheel provided with the brushless motor 121 rotates and the metal driving shaft 122 rotates, and the metal driving shaft 122 drives the other wind wheel to rotate. Air enters the left air duct from the first air inlet 1121 and blows out from the first air outlet 1122, and air enters the right air duct from the second air inlet 1131 and blows out from the second air outlet 1132. The double air duct module of the utility model only needs to be provided with one direct-current brushless motor to drive two wind wheels, realizes double air duct air outlet, is low in carbon and energy-saving, and has the characteristics of safe use, stable performance, low noise and long service life.

[0034] In the embodiment, as shown in Figures 1 to 3As shown, the metal drive shaft 122 is provided with a metal shaft sleeve 125 between one end and the brushless motor 121, and also provided with a metal shaft sleeve 125 between the other end and the concentricity correction sleeve 124. The two ends of the metal drive shaft 122 are respectively provided with silica gel rings 126 between the metal drive shaft 122 and the wind wheel.

[0035] The accommodating cavity 1113 contains lubricating oil, which ensures that the metal drive shaft 122 and the metal shaft sleeve 125 are in a lubricated state for a long time, increases the stability, reliability and durability of the moving parts, and reduces the rotating friction noise.

[0036] As shown in the drawings, Figure 1 As shown, the left shroud cover 112 is provided with a first protrusion 1123, the right shroud cover 113 is provided with a second protrusion 1133, the left spiral case 1111 is provided with a groove corresponding to the first protrusion 1123, and the right spiral case 1112 is provided with a groove corresponding to the second protrusion 1133. The left shroud cover 112 and the left spiral case 1111, and the right shroud cover 113 and the right spiral case 1112 are connected by means of the groove and the protrusion. This structure has the advantages of no air leakage, good sealing effect, easy installation, simple structure and reliability.

[0037] In this embodiment, as shown in the drawings, Figure 1 and Figure 6 As shown, the shroud body is fixedly provided with a negative ion generator 150, which is arranged on the bottom plate between the left spiral case and the right spiral case outside the shroud body. As shown, Figure 7 The emission port 151 of the negative ion generator extends to the inner surface of the shroud body near the air outlet position. The fan blowing blows out the ions, which can disinfect and sterilize the surrounding air, remove odors, remove dust and purify the air, realize multi-field application, and have certain help for home, hospital epidemic prevention and reduction of bacterial transmission speed.

[0038] As shown in the drawings, Figure 8 A spacing is provided between the first air outlet 1122 and the second air outlet 1132, and the two air ducts are independent, the air supply is smooth, and the noise is small. The two air outlets are both provided with annular connection step structures F, which are convenient for external air ducts, do not leak air, and have good sealing effect.

[0039] As shown in the drawings, Figures 3 to 5 In this embodiment, the first wind wheel 130 and the second wind wheel 140 are both provided with blade extension steps A at the ends of the blades, which can increase the air volume and reduce the noise. Both the wind wheels are provided with 47 fan blades, and the fan blades are provided with a partition ring baffle B in the middle, which realizes double-sided air inlet, ensures small air resistance, large air pressure and small noise, and has the effect of small noise.

[0040] As shown in the drawings, Figures 9 to 12As shown in the figure, a fan comprises a housing 200 and a double-duct fan module 100 as claimed in any one of the above, which is arranged at the lower part of the housing 200, and the lower part of the housing is provided with air inlets 210 on both sides, which are communicated with the side air inlets of the double-duct fan module, and the upper part of the housing comprises two independent first air duct 280 and second air duct 290, which are communicated with the top air outlets of the double-duct fan module, and the front of the two air ducts is provided with air outlets 230.

[0041] The housing 200 comprises a front shell 240, a rear shell 250, a left side plate 260 and a right side plate 270. The upper part of the front shell 240, the upper part of the rear shell 250 and the left side plate 260 form the first air duct 280, and the right side plate 270 forms the second air duct 290; the air inlets 210 are arranged at the lower part of the left side plate and the right side plate respectively. As shown in the figure, Figure 11 As shown in the figure, the first air duct 280 and the second air duct 290 of the upper part of the housing are separated at the top and remain relatively independent.

[0042] In operation, as shown in the figure, Figure 11 and Figure 12 The double-duct fan module is opened, and under the action of the driving device, air is sucked into the volute from the air inlets 210 on both sides, and then enters the first air duct 280 and the second air duct 290 respectively, and is blown out through the air outlets 230 in front respectively.

[0043] The fan adopts a double-duct fan module, which comprises a brushless motor, a metal driving shaft, a magnetic ring and a concentricity correction sleeve, and is matched with the structure of the fan cover assembly and two fan wheels, and has stable performance, low noise, long service life and low cost.

[0044] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them. For those skilled in the art, the technical solutions recorded in the above embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications and replacements should all belong to the protection scope of the claims of the present application.

Claims

1. A dual-duct fan module, comprising a fan cover assembly, a drive device disposed within the fan cover assembly, and two wind wheels, characterized in that: The hood assembly includes a hood body, a left hood cover and a right hood cover, the hood body includes a left volute, a right volute and an accommodating chamber located between the left volute and the right volute, the first wind wheel is arranged in the left volute, and the second wind wheel is arranged in the right volute, the left hood cover is used to cover the left volute to form a left air duct, and the right hood cover is used to cover the right volute to form a right air duct, the left air duct and the right air duct are both provided with air inlets on the sides and air outlets on the top surfaces; the driving device includes a brushless motor, a metal driving shaft, a magnetic ring and a concentricity correction sleeve, the brushless motor and the magnetic ring are arranged in a wind wheel inner cavity and coaxially with the wind wheel, the magnetic ring is fixed in the wind wheel inner cavity and sleeved outside the brushless motor; one end of the metal driving shaft is coaxially connected to the brushless motor, the metal driving shaft passes through the accommodating chamber, and the other end is coaxially connected to the other wind wheel, and the concentricity correction sleeve is sleeved on the other end of the metal driving shaft.

2. The dual-duct fan module according to claim 1, characterized in that: A metal sleeve is provided between one end of the metal drive shaft and the brushless motor, and a metal sleeve is provided between the other end of the metal drive shaft and the concentricity correction sleeve.

3. The dual-duct fan module according to claim 1, characterized in that: Silicone rings are respectively provided between the two ends of the metal drive shaft and the wind wheel.

4. The dual-duct fan module according to claim 1, characterized in that: The left wind shield cover and the left volute, as well as the right wind shield cover and the right volute are all connected by means of grooves and protrusions.

5. The dual-duct fan module according to claim 1, characterized in that: A negative ion generator is fixedly arranged on the wind cover main body, and the emission port of the negative ion generator is close to the air outlet.

6. The dual-duct fan module according to claim 5, characterized in that: The negative ion generator is arranged on a bottom plate between the left volute and the right volute outside the wind cover body.

7. The dual-duct fan module according to claim 1, characterized in that: A partition ring baffle is provided in the middle of each wind wheel.

8. The dual-duct fan module according to claim 1, characterized in that: Each wind wheel is provided with a blade extension step at the end of the blade.

9. A fan, comprising a housing, characterized in that: It also includes a dual-duct fan module as described in any one of claims 1 to 8, wherein the dual-duct fan module is arranged at the lower part of the shell, and air inlets communicating with the side air inlets of the dual-duct fan module are respectively provided on both sides of the lower part of the shell, and the upper part of the shell includes two independent air ducts respectively communicating with the top air outlet of the dual-duct fan module, and air outlets are respectively provided in front of the two air ducts.

10. The fan according to claim 9, characterized in that: The shell includes a front shell, a rear shell, a left side plate and a right side plate. The upper part of the front shell, the upper part of the rear shell and the left side plate form a first air duct, and the upper part of the rear shell and the right side plate form a second air duct; the air inlets are respectively arranged below the left side plate and the right side plate.

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