Circulation fan for air purifier test chamber

Abstract

The present invention relates to a circulating fan for an air purifier test cabin, comprising a shell, wherein a first protective plate, an air inlet impeller, a first stirring impeller, a flow-carrying cylinder, a second stirring impeller, a wind shield impeller, a vortex wheel and a second protective plate are coaxially arranged inside the shell, and a motor is also included, wherein the motor is composed of a motor head and a motor bearing, and the first protective plate and the second protective plate are respectively provided with shaft holes for the motor bearing to pass through, and the motor bearing is fixed in sequence at the center of the air inlet impeller, the first stirring impeller, the flow-carrying cylinder, the second stirring impeller, the wind shield impeller and the vortex wheel. The circulating fan for an air purifier test cabin disclosed by the present invention can adjust the fluidity and uniformity of particulate matter in the air purifier test cabin, reduce the inaccurate sampling caused by the natural sinking of particulate matter, and improve the detection accuracy based on a dust particle counter as a collector.

Description

Technical Field

[0001] The invention relates to the field of electrical appliance detection, in particular to the field of air purifier detection, and more specifically to a circulating fan for an air purifier test cabin. Background Art

[0002] Air purifiers are also called "air cleaners", air fresheners, and purifiers. Air purifiers use different media and different technologies to absorb, decompose or transform various air pollutants, effectively improving the cleanliness of the air. The air pollutants mentioned here usually include at least PM2.5, dust, pollen, bacteria, allergens, etc.

[0003] Currently available air purifiers are mainly used to remove particulate matter in the air. Through different removal methods, such as mechanical filter type, electrostatic electret filter type, high-voltage electrostatic dust collection, negative ion and plasma method, PM2.5, dust and other particulate matter are removed, thereby purifying the air.

[0004] In order to ensure that consumers have a basis for purchase and do not make blind purchases, the National Standards Committee has issued the national standard for "Air Purifiers", which clearly stipulates four core indicators that affect the purification effect of air purifiers: CADR value (clean air volume), CCM (cumulative purification volume), energy efficiency level and noise standard.

[0005] The air purifier test chamber involved in the present invention is mainly used to test whether the air purifier detector complies with GB / T18801-2008. A particle generator is set in the test chamber to simulate particulate environmental pollution. However, due to the natural property of particulate matter to sink, the particulate matter generated by the particle generator cannot be evenly distributed in the area to be detected, resulting in inaccurate sampling at the set collection point, which seriously affects the final performance measurement results. Summary of the invention

[0006] The technical problem to be solved by the present invention is that the particulate matter generated by the particle generator in the air purifier test chamber is easy to settle, resulting in poor distribution fluidity and uniformity, making it impossible for the data collected by the dust particle counter to obtain a natural attenuation trend (declining trend).

[0007] In order to solve the above technical problems, the present invention discloses a circulating fan for an air purifier test cabin, comprising a shell, in which a first protective plate, an air inlet impeller, a first stirring impeller, a flow-carrying cylinder, a second stirring impeller, a wind shield impeller, a vortex wheel and a second protective plate are coaxially arranged, and also includes a motor, the motor consists of a motor head and a motor bearing, the first protective plate and the second protective plate are respectively provided with axial holes for the motor bearing to pass through, and the motor bearing is fixed in sequence at the center of the air inlet impeller, the first stirring impeller, the flow-carrying cylinder, the second stirring impeller, the wind shield impeller and the vortex wheel.

[0008] Further preferably, the motor includes two, namely a first motor and a second motor, the air inlet impeller, the first stirring impeller, the flow-carrying cylinder and the second stirring impeller are fixed on the motor bearing of the first motor in sequence, and the bearing of the first motor (the first bearing) is located at the center of the air inlet impeller, the first stirring impeller, the flow-carrying cylinder and the second stirring impeller; the wind shielding impeller and the vortex wheel are fixed on the motor bearing of the second motor in sequence, and the bearing of the second motor (the second bearing) is located at the center of the wind shielding impeller and the vortex wheel; it also includes a filter plate, the filter plate is arranged between the wind shielding impeller and the vortex wheel, the end of the first bearing is fixed to one side end face of the filter plate, and the end of the second bearing is fixed to the other side end face of the filter plate; a first through hole is opened at the center of the first protective plate, the top end of the first bearing passes through the first through hole, and the motor head of the first motor is fixed to the top end of the first bearing; a second through hole is opened at the center of the second protective plate, the top end of the second bearing passes through the second through hole, and the motor head of the second motor is fixed to the top end of the second bearing.

[0009] Further preferably, the current-carrying cylinder includes a first end face, a second end face, and a support rod group arranged between the first end face and the second end face, the support rod group is composed of a plurality of support rods, one end of the support rod is fixed to the first end face, and the other end is fixed to the second end face, the fixing surface formed by each support rod is perpendicular to the first end face and perpendicular to the second end face, and each support rod is located on the same concentric circular surface of the first end face and the second end face.

[0010] Preferably, the vortex wheel is thorn-shaped.

[0011] Further preferably, the vortex wheel comprises a first vortex wheel and a second vortex wheel, and the first vortex wheel rotates synchronously with the second vortex wheel.

[0012] In a preferred technical solution, the first stirring impeller and the second stirring impeller are composed of an axis frame and blades fixed radially along the axis frame. Further preferably, the blades are rectangular strip blades. More preferably, the rectangular strip blades are fixed obliquely on the axis frame. More preferably, the inclination angle of the rectangular strip blades is 5-15°. The inclination angle mentioned here refers to the inclination angle based on the vertical direction.

[0013] In a preferred technical solution, the pore size of the filter plate is 3 μm. The filter plate can selectively allow particles to pass through. According to different standard requirements, filter plates with different pore sizes can be set. In the existing detection standards, the detection requirement is 0.3 μm particles. The filter plate can be used to retain particles of other specifications larger than 0.3 μm in the circulating fan.

[0014] In a preferred technical solution, the outer shell includes a bottom plate and a curved closing plate, and the coaxially arranged first protective plate, air inlet impeller, first stirring impeller, flow-carrying cylinder, second stirring impeller, wind shield impeller, vortex wheel and second protective plate are accommodated in the space formed by the curved closing plate and the bottom plate.

[0015] Preferably, the bottom plate is provided with installation and fixing holes.

[0016] Through the technical solution disclosed in the present invention, the particulate matter generated by the particle generating device enters the circulating fan for the air purifier test cabin from the air inlet impeller, and is mixed in the flow-carrying cylinder, and then is pressurized by the vortex wheel and dispersed by the wind shield impeller. At the same time, it is worth noting that through the preferred setting of the two motors in the present invention, the rotation speed of the air inlet impeller and the wind shield impeller can be adjusted, and by controlling the motor, the rotation speed of the air inlet impeller is made greater than the rotation speed of the wind shield impeller, thereby increasing the mixing time of the particulate matter and improving the mixing degree of the particulate matter.

[0017] In summary, the circulating fan for the air purifier test chamber disclosed in the present invention can adjust the fluidity and uniformity of the particles in the air purifier test chamber, reduce the inaccurate sampling caused by the natural sinking of the particles, and improve the detection accuracy based on the dust particle counter as a collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional schematic diagram of the circulation fan used in the air purifier test chamber.

[0019] Figure 2 This is a cross-sectional schematic diagram of the circulation fan used in the air purifier test chamber. DETAILED DESCRIPTION

[0020] In order to better understand the present invention, the present invention is further described below in conjunction with specific embodiments.

[0021] like Figure 1 and Figure 2 The circulating fan for the air purifier test cabin shown in the figure comprises an outer shell 1, in which a coaxially arranged first protective plate 2, an air inlet impeller 3, a first stirring impeller 4, a flow-carrying cylinder 5, a second stirring impeller 6, a wind shield impeller 7 and a vortex wheel are arranged. In the present embodiment, we preferably include two vortex wheels, namely a first vortex wheel 801 and a second vortex wheel 802, and the first vortex wheel 801 rotates synchronously with the second vortex wheel 802; and a second protective plate 9, and also includes a motor, which consists of a motor head and a motor bearing, and shaft holes for the motor bearings to pass through are respectively provided on the first protective plate and the second protective plate, and the motor bearings are fixed in sequence at the center of the air inlet impeller, the first stirring impeller, the flow-carrying cylinder, the second stirring impeller, the wind shield impeller and the vortex wheel.

[0022] In this embodiment, the preferred motor includes two, namely a first motor 10 and a second motor 11, the air inlet impeller 3, the first stirring impeller 4, the flow-carrying cylinder 5, and the second stirring impeller 6 are fixed on the motor bearing 1001 of the first motor 10 in sequence, and the bearing 101 (first bearing) of the first motor is located at the center of the air inlet impeller 3, the first stirring impeller 4, the flow-carrying cylinder 5 and the second stirring impeller 6; the wind shield impeller 7 and the vortex wheel, including the first vortex wheel 801 and the second vortex wheel 802, are fixed on the motor bearing 1101 of the second motor 11 in sequence, and the bearing 1101 (second bearing) of the second motor is located at the wind shield impeller 7 and the vortex wheel 801 and 802 are located at the center; a filter plate 12 is also included, the filter plate 12 is arranged between the wind shield impeller 7 and the first vortex wheel 801, the end of the first bearing 1001 is fixed to one side end face of the filter plate 12, and the end of the second bearing 1101 is fixed to the other side end face of the filter plate 12; a first through hole is opened at the center of the first protective plate, the top end of the first bearing passes through the first through hole, and the motor head 102 of the first motor is fixed to the top end of the first bearing; a second through hole is opened at the center of the second protective plate, the top end of the second bearing passes through the second through hole, and the motor head 1102 of the second motor is fixed to the top end of the second bearing.

[0023] Special attention Figure 1We can see that the current-carrying cylinder 5 includes a first end face 501, a second end face 502, and a support rod group arranged between the first end face 501 and the second end face 502, and the support rod group is composed of a plurality of support rods 503, one end of the support rod is fixed to the first end face, and the other end is fixed to the second end face, and the fixing surface formed by each support rod is perpendicular to the first end face and perpendicular to the second end face, and each support rod is located on the same concentric circle surface of the first end face and the second end face.

[0024] according to Figure 1 As shown in , in this embodiment, the vortex wheel is preferably in a thorn shape.

[0025] Similarly, according to Figure 1 As shown in the figure, the first stirring impeller 4 and the second stirring impeller 6 are composed of an axis frame and blades fixed radially along the axis frame. It can be seen that the rectangular strip blades 401 on the first stirring impeller and the rectangular strip blades 601 on the second stirring impeller. Figure 1 As can be seen in the figure, the rectangular blades are fixed on the axis frame at an angle. More preferably, the rectangular blades have an inclination angle of 10°. The inclination angle here refers to the inclination angle based on the vertical direction.

[0026] As a preferred technical solution, the aperture of the filter plate 12 in this embodiment is 3 μm. The filter plate can be used to selectively allow particles to pass through. According to different standard requirements, filter plates with different apertures can be set. In the existing detection standards, the detection requirement is 0.3 μm particles. The filter plate can be used to retain particles of other specifications larger than 0.3 μm in the circulating fan.

[0027] like Figure 1 As shown in the figure, in this embodiment, the preferred shell includes a bottom plate 101 and a curved closing plate 102, and the coaxially arranged first protective plate, air inlet impeller, first stirring impeller, flow-carrying cylinder, second stirring impeller, wind shield impeller, vortex wheel and second protective plate are accommodated in the space formed by the curved closing plate and the bottom plate.

[0028] Preferably, a mounting hole 103 is provided on the bottom plate.

[0029] When in use, we fix the air purifier test chamber horizontally in the air purifier test chamber through the mounting fixing holes 103. Preferably, it is 1.5 meters from the ground and 0.4 meters from the wall.

[0030] When the particle generator is turned on, the particles generated by cigarettes enter the circulating fan of the air purifier test chamber through the air inlet blades, and are mixed and enhanced in the flow-carrying cylinder. At the filter plate, particles larger than 0.3μm generated by cigarettes are blocked, and only particles of 0.3μm are blown out through the windshield blades under pressure. This significantly improves the uneven natural sedimentation of particles generated by cigarettes. It ensures the uniform flow of particles and the accuracy of sampling at the collection point.

[0031] The above is a specific implementation of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. Circulation fan for air purifier test chamber, characterized by: The invention comprises a housing, wherein a first protective plate, an air inlet impeller, a first stirring impeller, a flow-carrying cylinder, a second stirring impeller, a wind shield impeller, a vortex wheel and a second protective plate are coaxially arranged in the housing, and a motor is further comprised, wherein the motor comprises a motor head and a motor shaft, wherein shaft holes for the motor shaft to pass through are respectively arranged on the first protective plate and the second protective plate, and wherein the motor shaft is sequentially fixed at the center of the air inlet impeller, the first stirring impeller, the flow-carrying cylinder, the second stirring impeller, the wind shield impeller and the vortex wheel; The motor includes two, namely a first motor and a second motor, the air intake impeller, the first stirring impeller, the flow-carrying cylinder and the second stirring impeller are fixed on the motor bearing of the first motor in sequence, and the bearing of the first motor, namely the first bearing, is located at the center of the air intake impeller, the first stirring impeller, the flow-carrying cylinder and the second stirring impeller; the wind shielding impeller and the vortex wheel are fixed on the motor bearing of the second motor in sequence, and the bearing of the second motor, namely the second bearing, is located at the center of the wind shielding impeller and the vortex wheel; it also includes a filter plate, the filter plate is arranged between the wind shielding impeller and the vortex wheel, the end of the first bearing is fixed to one side end face of the filter plate, and the end of the second bearing is fixed to the other side end face of the filter plate; a first through hole is opened at the center of the first protective plate, the top end of the first bearing passes through the first through hole, and the motor head of the first motor is fixed to the top end of the first bearing; a second through hole is opened at the center of the second protective plate, the top end of the second bearing passes through the second through hole, and the motor head of the second motor is fixed to the top end of the second bearing.

2. The circulating fan for the air purifier test chamber according to claim 1, characterized in that: The current-carrying cylinder includes a first end face, a second end face, and a support rod group arranged between the first end face and the second end face, the support rod group is composed of a plurality of support rods, one end of the support rod is fixed to the first end face, and the other end is fixed to the second end face, the fixing surface formed by each support rod is perpendicular to the first end face and the second end face, and each support rod is located on the same concentric circular surface of the first end face and the second end face.

3. The circulating fan for the air purifier test chamber according to claim 1, characterized in that: The vortex wheel is in a thorn shape.

4. The circulating fan for the air purifier test chamber according to claim 1 or 3, characterized in that: The vortex wheel comprises a first vortex wheel and a second vortex wheel, and the first vortex wheel rotates synchronously with the second vortex wheel.

5. The circulating fan for the air purifier test chamber according to claim 1, characterized in that: The first stirring impeller and the second stirring impeller are composed of an axis frame and blades fixed along the radial direction of the axis frame.

6. The circulating fan for the air purifier test chamber according to claim 5, characterized in that: The blades are rectangular strip blades.

7. The circulating fan for the air purifier test chamber according to claim 6, characterized in that: The rectangular blades are fixed on the shaft center frame at an angle.

8. The circulating fan for the air purifier test chamber according to claim 7, characterized in that: The inclination angle of the rectangular blades is 5-15°.

9. The circulating fan for the air purifier test chamber according to claim 1, characterized in that: The pore size of the filter plate is 3 μm.

10. The circulating fan for the air purifier test chamber according to claim 1, characterized in that: The shell includes a bottom plate and a curved closing plate, and the coaxially arranged first protective plate, air inlet impeller, first stirring impeller, flow-carrying cylinder, second stirring impeller, wind shield impeller, vortex wheel and second protective plate are accommodated in a space formed by the curved closing plate and the bottom plate.

11. The circulating fan for the air purifier test chamber according to claim 10, characterized in that: The bottom plate is provided with installation and fixing holes.

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