CN215603708U - Double-duct hurricane cylinder - Google Patents

Abstract

The utility model relates to the field of household appliances, in order to prevent a columnar hurricane from generating hot spots, in particular to a double-duct hurricane barrel which comprises a shell assembly, wherein an air flow passage is defined in the shell assembly; the shell assembly is designed in a columnar shape, the maximum radial effective size of the shell assembly is D, and D is more than or equal to 20mm and less than or equal to 60 mm; the air flow path comprises a cold air flow path and a hot air flow path, a heating unit for heating air flow is arranged in the hot air flow path, the heating unit is positioned at the downstream of the fan unit, the air flow outlet comprises a cold air outlet and a hot air outlet, external air flow enters the air flow path through the air flow inlet under the action of the fan unit, and enters the cold air flow path and the hot air flow path at the downstream of the fan unit and is discharged from the cold air outlet and the hot air outlet respectively.

Description

Double-duct hurricane cylinder

Technical Field

The utility model relates to the field of household appliances, in particular to a double-duct hurricane cylinder.

Background

Most hair-dryer on the present market comprises handle and aircraft nose two parts, and handle and aircraft nose are connected, wholly are the T style of calligraphy, because the hair-dryer need bear the great spare part of occupation installation space such as fan unit, heating element, the whole volume of hair-dryer is bigger than normal, occupies great storage space. The airflow inlet is arranged on the handle or the handpiece, and the airflow outlet is arranged at the end part of the handpiece.

For the electric hair drier with the structure, when the electric hair drier is used, a user holds the handle by hand, and the head part is not easy to touch in the using process; even if the hair dryer is provided with a cold air flow passage on the market, the internal parts of the hair dryer can be distributed in the handle and the machine head, so that a relatively large installation space can be obtained in the machine head, the cold air flow passage and the hot air flow passage are arranged in the machine head, the volume of the machine head is generally large, and the arrangement of two air channels is relatively easy.

Disclosure of Invention

In order to solve the problems in the background art, the utility model provides a double-duct hurricane barrel, which solves the problem that a cold air flow passage and a hot air flow passage are designed simultaneously in a small space so as to prevent hot spots from being generated.

A dual-duct hurricane drum comprising a housing assembly defining an airflow path therein, the airflow path having an airflow inlet upstream for entry of an airflow and an airflow outlet downstream for exit of the airflow, a fan unit disposed within the housing assembly for passing airflow from the airflow inlet into the interior of the housing assembly,

wherein, the fan unit also comprises a heating unit which is positioned at the downstream of the fan unit;

the shell assembly is designed in a columnar shape, the maximum radial effective size of the shell assembly is D, and D is more than or equal to 20mm and less than or equal to 60 mm;

the air flow passage comprises a cold air flow passage and a hot air flow passage, the heating unit is arranged in the hot air flow passage, the air flow outlet comprises a cold air outlet and a hot air outlet, external air flow enters the air flow passage through the air flow inlet under the action of the fan unit, and the external air flow enters the cold air flow passage and the hot air flow passage at the downstream of the fan unit and is discharged from the cold air outlet and the hot air outlet respectively.

The hurricane fan has the advantages that the casing assembly is designed in a columnar mode, the maximum radial effective size of the casing assembly is D, D is more than or equal to 20mm and less than or equal to 60mm, and the hurricane fan is small in size and small in occupied storage space; when D is less than 20mm, the internal space of the shell assembly is too small to meet the power requirements of the fan unit and the heating unit, so that the drying efficiency and the water ion discharge efficiency can be reduced; when D is larger than 60mm, the size of the shell assembly is too large, the shell assembly is inconvenient to hold, and the use experience is poor;

the air flow in the cold air flow passage and the hot air flow passage are respectively discharged from the cold air outlet and the hot air outlet, independent cold air flow and hot air flow can be obtained at the cold air outlet and the hot air outlet, the cold air flow can reduce the air temperature reaching the surface of the hair, the generation of hot spots can be effectively reduced, the hot spots can be prevented from causing the burning pain of the hair and the high-temperature hot air to be frightened and withered after the hair is dried, and the hair care and hair nourishing effect is achieved.

Preferably, the volume of the hot gas flow path is greater than the volume of the cold gas flow path.

The heating device has the advantages that heat generated by the heating wire is taken away in time, the heating efficiency is improved, the effect of reducing the probability of hot spot generation can be achieved, and the heating unit can be installed in a larger space, so that the heating unit has larger heating power, and the heating speed is further improved.

Preferably, the area of the hot air outlet is larger than that of the cold air outlet.

The fan has the advantages that the air flow formed by the working of the fan unit is mainly or completely used for entering the hot air flow channel, the technical scheme is favorable for discharging the hot air flow in time, the drying efficiency is improved, and the occurrence probability of the condition that the high-temperature air flow is accumulated in the shell assembly and cannot be discharged in time to burn out internal parts is reduced as far as possible.

Preferably, the cold air outlet and the hot air outlet are both located on a side wall of the housing assembly.

The benefit is, through making cold wind export, hot air outlet all sets up the lateral wall at casing subassembly, combine the design of column casing subassembly, in the use, compare in traditional T type hair-dryer, the axial distance overlength of aircraft nose among the prior art has been overcome, it is great to make user's arm apart from the hair distance, the drawback of arm last power, the distance between arm and the hair is shortened to this technical scheme's mode of setting, reduces the fatigue degree of blowing the hair in-process, accord with human engineering.

Preferably, the cold air outlet is positioned above the hot air outlet.

The benefit is, the inner space of the make full use of casing subassembly of being convenient for sets up heating element, fan unit, air conditioning circulating path, hot gas flow path, cold wind export, hot air outlet in the space that is a lot of less than traditional T type hair-dryer, and this technical scheme is favorable to accomplishing aforementioned spare part, structure at casing subassembly's assembly and setting through lower structure complexity, and can make full use of the inner space of casing.

Preferably, the cold air flow passage passes over the hot air outlet and is discharged from the cold air outlet in a direction of air flow.

The heat exchanger has the advantages that the heat exchanger is beneficial to completing the assembly and layout of the heating component, the fan unit, the cold air flow channel, the hot air flow channel, the cold air outlet and the hot air outlet in the shell component through lower structural complexity.

Preferably, the cold gas flow path is located outside the hot gas flow path and extends along the hot gas flow path.

The advantage is that the internal space of the shell assembly, especially the space in the radial direction, can be fully utilized, and the radial size of the shell assembly is made small on the premise of not obviously weakening the power of the heating unit;

the hot air flow raises the temperature of the partial outer surface of the shell assembly, so that the partial outer surface of the shell assembly is hot, and the probability that hands may touch the hot partial outer surface is high in the operation process, therefore, the cold air flow path is positioned outside the hot air flow path through the technical scheme, and the temperature of the partial outer surface of the shell assembly is reduced.

Preferably, the cold air flow passage is located inside the hot air flow passage, and the cold air outlet is located inside the hot air outlet.

Preferably, the flow rate of the gas flow in the cold gas flow path is less than the flow rate of the gas flow in the hot gas flow path.

The heating device has the advantages that airflow in the hot air flow path needs to be quickly discharged, heat generated by the heating unit is taken away, the heating efficiency is improved, and the occurrence probability of burning out internal parts due to the fact that high-temperature airflow is accumulated in the shell assembly and cannot be discharged in time is reduced as far as possible; the air flow in the cold air flow passage is slowly discharged, so that on one hand, a fluid heat insulation cavity is formed, the temperature rising speed of the local surface of the shell component is reduced, and a better scald-proof effect is achieved; on the other hand, the cold air flow passage is provided to reduce the probability of hot spots, and to prevent the temperature of the air flow blown out from the hot air outlet from being significantly reduced, thereby avoiding the significant reduction of hair drying efficiency as much as possible.

Preferably, the heating power of the heating unit is 1000W to 1800W, the fan unit comprises a motor and an impeller driven by the motor to rotate, the motor is a three-phase synchronous motor, the rotation speed of the motor is 80000rpm or more and n or less and 130000rpm or less, the airflow in the cold air flow passage can be formed by the operation of the fan unit, and the external airflow can be sucked into the cold air flow passage when the airflow in the hot air flow passage is discharged from the hot air outlet.

The heating device has the advantages that generally, the heating power is larger, the volume of the heating unit is larger, the purpose of rapid drying can be met, and the appropriate volume can be obtained through the technical scheme, so that the internal space of the shell assembly is occupied appropriately, and the shell assembly cannot be greatly changed due to the volume of the heating assembly; the motor speed of the fan unit is high, and the impeller can be driven to rotate at a high speed, so that large air volume and air pressure can be generated, the hair can be quickly dried, and external air can be driven to be sucked into the cold air circulation passage to increase the air volume, or the air flow part formed by the fan unit enters the cold air circulation passage and does not have obvious influence on the hair drying efficiency.

Drawings

Fig. 1 is a schematic view of the structure of a hurricane cylinder according to the present invention.

Fig. 2 is an exploded view of a hurricane cylinder in accordance with the present invention.

Fig. 3 is a sectional view of the air duct structure of the hurricane tube of the present invention.

Fig. 4 is an enlarged view of a portion indicated by a in fig. 3.

Fig. 5 is still another sectional view of the air duct structure of the hurricane tube of the present invention.

Fig. 6 is an exploded view of the inner wall, and components within the inner wall, of the present invention.

FIG. 7 is a schematic diagram of the structure of the water ion module of the present invention.

Fig. 8 is a structural schematic of the radial dimension of the housing assembly of the present invention.

The names of the components identified in the figures are as follows:

1. a housing assembly; 101. an inner wall; 1011. a first inner wall; 1012. a second inner wall; 102. an outer wall; 103. a housing; 2. an airflow inlet; 3. an airflow outlet; 301. a hot air outlet; 302. a cold air outlet; 4. a heating unit; 5. a fan unit; 6. a hot gas flow path; 7. a cold air flow path; 8. a control component; 9. an anti-scald isolation layer; 10. an airflow reversing structure; 1001. an arc-shaped blade; 1002. a partition wall surface; 11. a water ion module; 1101. a condenser rod; 1102. a discharge electrode group; 1103. a semiconductor refrigeration sheet; 1104. a heat dissipation unit; 12. an accommodating space; 13. a cold air inlet; 14. a high voltage power supply; 15. a cylindrical portion.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

Example 1:

as shown in fig. 1 to 8, a hurricane blower comprises a housing assembly 1, said housing assembly 1 defining an air flow path therein, said air flow path having an air flow inlet 2 upstream for air flow to enter, and an air flow outlet 3 downstream for air flow to exit, a fan unit 5 disposed in said housing assembly 1 for air flow to enter from said air flow inlet 2 into the interior of said housing assembly 1, and a heating unit 4, said heating unit 4 being located downstream of said fan unit 5; the housing assembly 1 is of a cylindrical design, the air flow path includes a cold air flow path 7 and a hot air flow path 6, the heating unit 4 is arranged in the hot air flow path 6, the air flow outlet 3 includes a cold air outlet 302 and a hot air outlet 301, external air flows enter the air flow path through the air flow inlet 2 under the action of the fan unit 5, enter the cold air flow path 7 and the hot air flow path 6 respectively downstream of the fan unit 5, and are discharged from the cold air outlet 302 and the hot air outlet 301 respectively.

In this case, the airflow in the cold airflow path 7 can be directly formed by the operation of the fan unit 5, that is, the airflow in the cold airflow path 7 and the airflow in the hot airflow path 6 are both active airflows generated by the operation of the fan unit 5; the active air flow generated by the operation of the fan unit 5 can also enter the hot air flow path 6, and the air flow in the hot air flow path 6 can be discharged from the hot air outlet 301 to cause the external air flow to be entrained into the passive air flow of the cold air flow path 7.

In order to facilitate the operation in the using process, the maximum effective radial dimension of the shell assembly 1 is D (shown in figure 8), and D is more than or equal to 20mm and less than or equal to 60 mm; preferably, D is 48 mm. D is more than or equal to 20mm and less than or equal to 60mm, and a hurricane cylinder with small volume and small occupied storage space is obtained; when D is less than 20mm, the internal space of the shell component 1 is too small to meet the power requirements of the fan unit 5 and the heating unit 4, so that the drying efficiency and the water ion discharge efficiency are reduced; when D is larger than 60mm, the size of the shell component 1 is too large, the shell component is inconvenient to hold, and the use experience is poor.

Furthermore, the volume of the hot air flow passage 6 is larger than that of the cold air flow passage 7, so that the heat generated by the heating wire can be taken away in time, the hair drying efficiency can be improved, the hot spot generation probability can be reduced, and the heating unit 4 can be installed in a larger space, so that the heating unit 4 has larger heating power, and the hair drying speed can be further improved. The area of the hot air outlet 301 is larger than that of the cold air outlet 302, air flow formed by the working of the fan unit 5 is mainly or completely used for entering the hot air flow passage 6, the technical scheme is favorable for discharging hot air flow in time, the drying efficiency is improved, and the occurrence probability of the condition that high-temperature air flow is accumulated in the shell assembly 1 and cannot be discharged in time to burn out internal parts is reduced as far as possible.

Further, as shown in fig. 1, 3, 4, 5, cold air outlet 302 and hot air outlet 301 all are located the lateral wall of casing subassembly 1 combines the design of column casing subassembly 1, in the use, compare in traditional T type hair-dryer, has overcome the axial distance overlength of aircraft nose among the prior art, makes user's arm apart from the hair distance great, the arm lasts the drawback of exerting oneself, the distance between arm and the hair is shortened to the mode of setting of this technical scheme, reduces the fatigue degree of blowing the in-process of sending out, accords with human engineering. The cold air outlet 302 is located above the hot air outlet 301, in this example, the cold air outlet 302 is in a shape of a long and thin strip, and the cold air outlet 302 is in a shape of a circle.

The cold air flow path 7 passes over the hot air outlet 301 in the air flow direction and is discharged from the cold air outlet 302. In this example, the cold gas flow path 7 is located outside the hot gas flow path 6 and extends along the hot gas flow path 6. The internal space of the shell assembly 1, especially the space in the radial direction, can be fully utilized, and the radial size of the shell assembly 1 is reduced on the premise of not obviously weakening the power of the heating unit 4; the hot air flow raises the temperature of part of the outer surface of the housing assembly 1, making the local outer surface of the housing assembly 1 hotter and with a higher probability that during operation hands may touch the aforementioned hotter local outer surface, thus by this solution the cold air flow path 7 is located outside the hot air flow path 6, reducing the temperature of the local outer surface of the housing assembly 1. Further, in this embodiment, the cold airflow channel 7 is located at one side of the hot airflow channel 6, and the cold airflow channel 7 is disposed opposite to the airflow outlet 3. It will be appreciated that the cold airflow path 7 extends around the hot airflow path 6 and the cold air outlet 302 is located outside the hot air outlet 301.

It is understood that the cold air flow path 7 is located inside the hot air flow path 6, and the cold air outlet 302 is located inside the hot air outlet 301.

In any of the foregoing examples, the flow rate of the air flow in the cold air flow path 7 is less than the flow rate of the air flow in the hot air flow path 6. The airflow in the hot airflow passage 6 needs to be quickly discharged to take away the heat generated by the heating unit 4, which is beneficial to improving the drying efficiency and reducing the occurrence probability of the condition that the high-temperature airflow is accumulated in the shell assembly 1 and cannot be discharged in time to burn out internal parts as far as possible; the air flow in the cold air flow passage 7 is slowly discharged, which is helpful to form a fluid heat insulation cavity on one hand, and reduces the temperature rise speed of the local surface of the shell assembly 1, thereby obtaining better scald-proof effect; on the other hand, the cold air flow path 7 is provided to reduce the probability of occurrence of hot spots, and to prevent the temperature of the air flow blown out from the hot air outlet 301 from being significantly reduced, thereby avoiding a significant reduction in hair drying efficiency as much as possible.

As shown in fig. 2 to 6, the housing assembly 1 includes an inner wall 101 and an outer wall 102 located outside the inner wall 101, and the heating unit 4 and the fan unit 5 are provided inside the inner wall 101; the cold gas flow path 7 is defined by the space between the inner wall 101 and the outer wall 102, and the hot gas flow path 6 is defined by at least the inner wall 101. The inner wall 101 may completely cover the inner wall 101 or may cover a part of the inner wall 101.

As shown in fig. 6, the inner wall 101 further includes a first inner wall 1011 for fixing the fan unit 5, and a second inner wall 1012 for defining the hot air flow path 6, the outer wall 102 covers at least the second inner wall 1012, and the cool air flow path 7 is formed by a space between the second inner wall 1012 and the outer wall 102. A cold air inlet 13 is formed between the outer wall 102 and the second inner wall 1012, and the outer wall 102 is connected with the second inner wall 1012 in a buckling manner. Further, said hurricane barrel further comprises an anti-scald insulation layer 9 and a housing 103, wherein both the outer wall 102 and the inner wall 101 are located inside said housing 103, the outer surface of the housing assembly 1 comprises the entire outer surface of the housing 103, said anti-scald insulation layer 9 is located outside the cold airflow passage 7, and said anti-scald insulation layer 9 is located between said outer wall 102 and said housing 103. The anti-scald isolation layer 9 is made of sponge or mica paper and other materials capable of insulating heat, in this example, the anti-scald isolation layer 9 is arranged on the inner wall 101 of the housing 103, and preferably, the anti-scald isolation layer 9 covers the whole inner wall 101 of the housing 103 corresponding to the hot air flow path 6. The hurricane drum further comprises a control component 8 for controlling the operation thereof, the control component 8 is fixed by the first inner wall 1011, the control component 8 is arranged upstream (referring to the upstream of the air flow direction) of the fan unit 5, and the control component 8 is arranged to overlap with the air flow inlet 2.

In this example, the heating power of the heating unit 4 is 1000W to 1800W; the fan unit 5 comprises a motor and an impeller driven by the motor to rotate, the motor is a three-phase synchronous motor, and the rotating speed of the motor is 80000rpm and not more than n and not more than 130000 rpm.

Example 2:

on the basis of embodiment 1, as shown in fig. 3 to 6, in the hurricane of the present embodiment, an airflow reversing structure 10 is further disposed in the airflow path, and the airflow reversing structure 10 is used for reversing the airflow moving along the axial direction of the housing assembly 1 in the cold airflow path 7 and the hot airflow path 6 to be blown out from the cold air outlet 302 and the hot air outlet 301, respectively. The design of the airflow reversing structure 10 enables the airflow to change the direction and be discharged from the cold air outlet 302 and the hot air outlet 301 respectively, so that the wind resistance is reduced, and the air volume loss is reduced.

Further, as shown in fig. 3 and 4, the airflow reversing structure 10 reverses the airflow in the cold airflow path 7 and the hot airflow path 6 simultaneously. The air flow in the two air flow passages is reversed through the same structural part, internal structural parts are reduced, the radial blowing size of the shell assembly 1 is reduced, and the shell assembly 1 with smaller size or volume is obtained.

More specifically, the airflow reversing structure 10 includes a plurality of curved blades 1001 spaced along the axial direction of the housing assembly 1 and curved toward the airflow outlet 3, wherein at least one curved blade 1001 simultaneously reverses the airflow in the cold airflow path 7 and the hot airflow path 6. According to the different arrangement of the cold air flow passage 7 and the hot air flow passage 6, different arc-shaped blades 1001 participate in reversing the air flow in the cold air flow passage 7 and the hot air flow passage 6 simultaneously, and may be the uppermost arc-shaped blade 1001, or may be the lowermost arc-shaped blade 1001, in this example, the cold air outlet 302 and the hot air outlet 301 are both located on the side wall of the housing assembly 1, and the cold air outlet 302 is located above the hot air outlet 301, and the cold air flow passage 7 passes over the hot air flow passage 6 and is discharged from the cold air outlet 302, so in this example, the arc-shaped blade 1001 located uppermost is used for reversing the air flow in the cold air flow passage 7 and the hot air flow passage 6 simultaneously.

As shown in fig. 5 and 6, the airflow direction changing structure 10 includes a partition wall 1002 extending along the axial direction of the housing assembly 1, and the cold airflow passage 7 and the hot airflow passage 6 are respectively located on both sides of the partition wall 1002. Further, the housing assembly 1 includes an outer wall 102 covering the exterior of the airflow direction changing structure 10, and the cold air flow path 7 is defined by a first surface of the partition wall 1002 and an inner wall 101 of the outer wall 102. The air flow reversing structure 10 further includes a plurality of arc-shaped blades 1001 extending between the hot air outlet 301 and a second surface of the partition wall 1002, the second surface being opposite to the first surface, side walls of the arc-shaped blades 1001 are abutted to the inner wall 101 of the outer wall 102, and the hot air flow path 6 is defined by the arc-shaped blades 1001, the second surface and the inner wall 101 of the outer wall 102. The plurality of arc-shaped vanes 1001 are located on one side of the partition wall 1002.

As shown in fig. 6, the housing assembly 1 includes an inner wall 101 and an outer wall 102 sleeved outside the inner wall 101, the inner wall 101 and the outer wall 102 cooperate to define the airflow path, the airflow reversing structure 10 is formed as a part of the inner wall 101, the heating unit 4 is located between the airflow reversing structure 10 and the fan unit 5, and the fan unit 5 and the heating unit 4 are located inside the inner wall 101. The inner wall 101 comprises a first inner wall 1011 and a second inner wall 1012 which are vertically split, the airflow reversing structure 10 is formed on the first inner wall 1011, the fan unit 5 is fixed in the second inner wall 1012, a cold airflow channel is defined by an outer wall 102 surface of the first inner wall 1011 and an inner wall 101 surface of the outer wall 102, and a cold airflow inlet 13 of the cold airflow channel is formed by a gap between the first inner wall 1011 and the second inner wall 1012. The first inner wall 1011 further includes a cylindrical portion 15 located below the airflow direction changing structure 10, and the heating unit 4 is cylindrical and fixed by the cylindrical portion 15.

Example 3:

on the basis of embodiment 1 or embodiment 2, as shown in fig. 3 to 7, the hurricane fan further includes a water ion module 11, the water ion module 11 is disposed in the cold air passage, the water ion module 11 includes a condensation rod 1101, a semiconductor chilling plate 1103, a heat dissipation unit 1104 and a discharge electrode group 1102 electrically connected to the high voltage power supply 14, the chilling surface of the semiconductor chilling plate 1103 contacts with the condensation rod 1101, the warming surface of the semiconductor chilling plate 1103 is attached to the heat dissipation unit 1104, and the discharge electrode group 1102 discharges to the condensation rod 1101 to form water ions. The water ions are discharged from the cold air outlet 302 to the outside by the cold air. The housing assembly 1 comprises an inner wall 101 and an outer wall 102 positioned outside the inner wall 101, an accommodating space 12 is formed between the inner wall 101 and the outer wall 102, and the water ion module 11 is placed in the accommodating space 12.

In this embodiment, as shown in fig. 7, the water ion module 11 is a unit, that is, the condensation rod 1101, the semiconductor refrigeration sheet 1103 and the heat dissipation unit 1104 are integrated into a unit through a mounting bracket, the unit is directly assembled in the mounting space to complete the installation of the water ion module 11, and the water ion module 11 can be fixedly mounted on the inner wall 101 by screws or fasteners, which facilitates the installation of the water ion module 11 and is beneficial to improving the assembly efficiency.

It can be understood that the aforementioned components of the water ion module 11 can also be mounted on the inner wall 101 to form a unit with the inner wall 101, which is beneficial to improve the utilization rate of the accommodating space 12, so that the water ion module 11 occupies a smaller installation space, and is beneficial to reduce the volume of the housing assembly 1.

In this example, as shown in fig. 6, the accommodating space 12 is located above the inner wall 101 and between the inner wall 101 and the outer wall 102; the inner space of the shell component 1 with the columnar design is much smaller than that of a traditional T-shaped hair drier (a structure of a handle and a machine head), and the water ion module 11 is a relatively large component, so that the inner space of the shell component 1 is fully utilized, and the occupied small installation space is a problem to be considered. The air inlet is arranged above the inner wall 101, so that the space of the shell assembly 1 in the radial direction can be fully utilized, the air quantity in an air flow passage is not obviously influenced, and the axial size and the radial size of the shell assembly 1 are not greatly changed.

The accommodation space 12 may be the whole of the cold airflow path 7 or may constitute a part thereof.

In this example, the cold air outlet 302 is disposed on the inner wall 101 and is communicated with the accommodating space 12, the outer wall 102 is cylindrical and covers the outer wall 102 of the inner wall 101, and the outer wall 102 is provided with an opening communicated with the cold air outlet 302, so as to achieve the purpose of discharging water ions to the outside of the hurricane cylinder.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (10)

1. A dual-duct hurricane drum comprising a housing assembly defining an airflow path therein, the airflow path having an airflow inlet upstream for entry of an airflow and an airflow outlet downstream for exit of the airflow, a fan unit disposed within the housing assembly for passing airflow from the airflow inlet into the interior of the housing assembly,

the fan is characterized by further comprising a heating unit, wherein the heating unit is positioned at the downstream of the fan unit;

the shell assembly is designed in a columnar shape, the maximum radial effective size of the shell assembly is D, and D is more than or equal to 20mm and less than or equal to 60 mm;

the air flow path comprises a cold air flow path and a hot air flow path, and the heating unit is arranged in the hot air flow path; the air flow outlet comprises a cold air outlet and a hot air outlet, external air flow enters the air flow passage through the air flow inlet under the action of the fan unit, enters the cold air flow passage and the hot air flow passage at the downstream of the fan unit respectively, and is discharged from the cold air outlet and the hot air outlet respectively.

2. The hurricane barrel of claim 1, wherein a volume of the hot gas flow path is greater than a volume of the cold gas flow path.

3. The hurricane drum of claim 2, wherein an area of the hot air outlet is greater than an area of the cold air outlet.

4. The hurricane drum of claim 1, wherein the cold air outlet and the hot air outlet are both located on a side wall of the housing assembly.

5. The hurricane drum of claim 4, wherein the cold air outlet is located above the hot air outlet.

6. The hurricane drum of claim 5, wherein the cold air flow path passes over the hot air outlet and exits the cold air outlet in a direction of air flow.

7. The hurricane barrel of claim 6, wherein the cold gas flow path is located outside of the hot gas flow path and extends along the hot gas flow path.

8. The hurricane drum of claim 4, wherein the cold air flow path is located inside the hot air flow path, and the cold air outlet is located inside the hot air outlet.

9. The hurricane drum of claim 1, wherein a flow rate of the gas flow in the cold gas flow path is less than a flow rate of the gas flow in the hot gas flow path.

10. The hurricane wind tunnel according to any one of claims 1 to 9, wherein the heating power of the heating unit is 1000W to 1800W, the fan unit includes a motor and an impeller driven to rotate by the motor, the motor is a three-phase synchronous motor, the motor has a rotation speed of 80000rpm ≦ n ≦ 130000rpm, the air flow in the cold air flow passage is formed by the operation of the fan unit, or the air flow in the hot air flow passage is drawn into the cold air flow passage by entrainment of an external air flow when discharged from the hot air outlet, forming the air flow in the cold air flow passage.

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