CN211819998U - Low-noise centrifugal fan - Google Patents

Abstract

The utility model discloses a low-noise centrifugal fan, which comprises a shell and a supporting mechanism, wherein the supporting mechanism is fixedly arranged at the lower end of the shell; install dust collecting equipment in the inner chamber of working barrel, and the dust conveying pipe is connected respectively at the both ends of storing up the dirt chamber, and the inner chamber in dust collection head intercommunication dust storage chamber for some dust that the working barrel is inside to produce because the fan during operation can in time utilize the dust collection head to clear up. This centrifugal fan is through installing the protective layer on the inner wall at the working barrel, the protective layer is by the buffer layer, the insulating layer, the sealing layer, the insulating layer with fall the layer of making an uproar and constitute, and the material on the layer of making an uproar is the sound insulation felt material, not only make the fan can utilize the buffer layer to carry out the damping work effectively at the during operation, thereby resist some fans vibration noise that the during operation produced, the life of fan has been prolonged, can also utilize to fall some noises that the layer of making an uproar was produced inside and eliminate and the separation, avoid its normal work of conducting external influence.

Description

Low-noise centrifugal fan

Technical Field

The utility model relates to an air supply equipment technical field specifically is a low noise centrifugal fan.

Background

The aerodynamic noise of the fan mainly comprises rotational noise and vortex noise, and the aerodynamic compression process generated by the high-speed rotation of the blades in the volute contains stronger periodic arterial airflow and wake. This time-varying pressure pulsation causes the vanes to generate rotational radiation noise. And along with the increase of Reynolds number, the transverse motion of fluid micro-clusters occurs in the wake, the laminar flow state is changed to the turbulent flow state, and vortexes are generated to cause boundary layer separation, the vortexes formed during separation are continuously taken away by the main flow, and a wake vortex area is formed behind the blade to generate vortex noise. Although people have clear understanding on the fan vortex noise, due to the complexity of vortex parameters, no theoretical formula or technical scheme capable of guiding the design of an actual fan exists at present, and the vortex noise is always a difficult problem of reducing the fan noise.

Current centrifugal fan, most noise at work is great, and the project organization is simple slightly, and intelligent level is lower, lacks filter mechanism, can not know operating temperature in time and dust removal effect relatively poor.

Aiming at the problems and challenges, a low-noise centrifugal fan is provided, and has the advantages of low working noise, high intelligent level, high filtering efficiency, timely working temperature awareness, good dust removal effect and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low noise centrifugal fan, it has that noise at work is less, intelligent level is higher, filtration efficiency is high, can know operating temperature in good time and dust removal effect advantage such as better to it is great to have solved the most noise at work of traditional centrifugal fan, and the project organization is slightly simple, and intelligent level is lower, lacks filter mechanism, can not know the relatively poor problem of operating temperature and dust removal effect in proper time.

In order to achieve the above object, the utility model provides a following technical scheme: a low-noise centrifugal fan comprises a shell and a supporting mechanism, wherein the supporting mechanism is fixedly arranged at the lower end of the shell, the shell comprises a working cylinder and a filter cylinder, one side of the working cylinder is fixedly connected with the filter cylinder, a primary filter screen and a secondary filter screen are sequentially arranged in an inner cavity of the filter cylinder, and the supporting mechanism is arranged on the lower end face of the working cylinder;

the supporting mechanism comprises supporting legs, mounting screw holes and reinforcing blocks, and the two mounting screw holes are respectively machined in the upper end faces of the supporting legs.

Furthermore, a temperature display and a plurality of radiating fins are respectively arranged on the outer wall of the working barrel, and the radiating fins are made of aluminum alloy materials.

Further, install the fan body in the inner chamber of working barrel, the fan body comprises first rotary drum, gear motor, second rotary drum and rotating vane, and first rotary drum passes through gear motor and connects the second rotary drum, and all is provided with a plurality of rotating vane on the outer wall of first rotary drum and second rotary drum.

Furthermore, a protective layer is arranged on the inner wall of the working barrel and consists of a buffer layer, an insulating layer, a sealing layer, a heat insulating layer and a noise reduction layer, and the noise reduction layer is made of a sound-proof felt material.

Further, a temperature sensor is arranged on the inner wall of the working barrel and electrically connected with a temperature display.

Furthermore, a dust collecting device is arranged in the inner cavity of the working barrel and consists of a plurality of dust collecting heads, a dust storage cavity and a dust conveying pipe, the dust conveying pipe is respectively connected to two ends of the dust storage cavity, and the dust collecting heads are communicated with the inner cavity of the dust storage cavity.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. this low noise centrifugal fan, install the protective layer on the inner wall of working barrel, the protective layer is by the buffer layer, the insulating layer, the sealing layer, the insulating layer is fallen the layer and is constituteed with making an uproar, and the material on the layer of making an uproar falls is the sound insulation felt material, not only make the fan can utilize the buffer layer to carry out the damping work effectively at the during operation, thereby resist some fans vibration noise that the during operation produced, the life of fan has been prolonged, can also utilize and fall some noises of the layer of making an uproar and eliminate and the separation to inside production, avoid its normal work of conducting external.

2. This low noise centrifugal fan installs dust collecting equipment in the inner chamber of working barrel, and the defeated dirt pipe is connected respectively at the both ends that store up the dirt chamber, the inner chamber in dust absorption head intercommunication storage dirt chamber for some dusts that the working barrel inside produced because the fan during operation can in time utilize the dust absorption head to clear up, avoid these dusts to influence the work efficiency of fan, thereby ensured the orbital noncongestion of fan operation and reduced the noise of operation, also improved the functionality of fan to a certain extent.

3. This low noise centrifugal fan, at one side fixed connection cartridge filter of working barrel, set gradually one-level filter screen and second grade filter screen in the inner chamber of cartridge filter for the fan can possess certain filtering capability, can filter some impurity in the air through two-layer filter screen in good time when the operation, and the gas that prevents to blow off threatens people's healthy because impurity or bacterium are too much, thereby has also improved the factor of safety of fan, compares with like product, more has the competitiveness.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the split structure of the present invention;

FIG. 3 is a schematic view of the protective layer of the present invention;

FIG. 4 is a schematic view of the inner plane structure of the working barrel of the present invention;

fig. 5 is the schematic structural diagram of the blower body of the present invention.

In the figure: 1. a housing; 11. a working barrel; 111. a temperature display; 112. a heat sink; 113. a fan body; 1131. a first rotating drum; 1132. a reduction motor; 1133. a second rotating drum; 1134. a rotating blade; 114. a protective layer; 1141. a buffer layer; 1142. an insulating layer; 1143. a sealing layer; 1144. a thermal insulation layer; 1145. a noise reduction layer; 115. a temperature sensor; 116. a dust collection device; 1161. a dust collection head; 1162. a dust storage chamber; 1163. a dust conveying pipe; 12. a filter cartridge; 121. a first-stage filter screen; 122. a secondary filter screen; 2. a support mechanism; 21. a support leg; 22. mounting a screw hole; 23. and a reinforcing block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, a low-noise centrifugal fan includes a housing 1 and a support mechanism 2, the support mechanism 2 is fixedly disposed at the lower end of the housing 1, the housing 1 includes a working cylinder 11 and a filter cylinder 12, one side of the working cylinder 11 is fixedly connected to the filter cylinder 12, a primary filter screen 121 and a secondary filter screen 122 are sequentially disposed in an inner cavity of the filter cylinder 12, and the support mechanism 2 is mounted on the lower end surface of the working cylinder 11; the supporting mechanism 2 comprises supporting legs 21, mounting screw holes 22 and reinforcing blocks 23, and two mounting screw holes 22 are respectively processed on the upper end surfaces of the supporting legs 21; the outer wall of the working barrel 11 is respectively provided with a temperature display 111 and a plurality of radiating fins 112, and the radiating fins 112 are made of aluminum alloy materials.

Referring to fig. 3-4, a low noise centrifugal fan, a protective layer 114 is installed on an inner wall of a working barrel 11, the protective layer 114 is composed of a buffer layer 1141, an insulating layer 1142, a sealing layer 1143, a heat insulating layer 1144 and a noise reduction layer 1145, and the noise reduction layer 1145 is made of a sound-proof felt material; a temperature sensor 115 is arranged on the inner wall of the working barrel 11, and the temperature sensor 115 is electrically connected with the temperature display 111; the dust collecting device 116 is installed in the inner cavity of the working barrel 11, the dust collecting device 116 is composed of a plurality of dust collecting heads 1161, a dust storage cavity 1162 and a dust conveying pipe 1163, the dust conveying pipe 1163 is respectively connected to two ends of the dust storage cavity 1162, and the dust collecting heads 1161 are communicated with the inner cavity of the dust storage cavity 1162.

Referring to fig. 5, a low-noise centrifugal fan, a fan body 113 is installed in an inner cavity of a working barrel 11, the fan body 113 is composed of a first rotating barrel 1131, a speed reduction motor 1132, a second rotating barrel 1133 and rotating blades 1134, the first rotating barrel 1131 is connected to the second rotating barrel 1133 through the speed reduction motor 1132, and the outer walls of the first rotating barrel 1131 and the second rotating barrel 1133 are provided with a plurality of rotating blades 1134.

In summary, the following steps: according to the low-noise centrifugal fan, one side of the working cylinder 11 is fixedly connected with the filter cylinder 12, the primary filter screen 121 and the secondary filter screen 122 are sequentially arranged in the inner cavity of the filter cylinder 12, so that the fan can have a certain filtering function, impurities in the air can be filtered by the two layers of filter screens in time during operation, the situation that the body health of people is threatened due to excessive impurities or bacteria in the blown gas is prevented, the safety coefficient of the fan is also improved, and the low-noise centrifugal fan is more competitive compared with similar products; the lower end surface of the working barrel 11 is provided with a supporting mechanism 2, and the upper end surfaces of the supporting legs 21 are respectively provided with two mounting screw holes 22; the protective layer 114 is arranged on the inner wall of the working barrel 11, the protective layer 114 is composed of a buffer layer 1141, an insulating layer 1142, a sealing layer 1143, a heat insulation layer 1144 and a noise reduction layer 1145, and the noise reduction layer 1145 is made of a sound-proof felt material, so that the buffer layer 1141 can be utilized to effectively reduce vibration during the operation of the fan, vibration noise generated during the operation of some fans can be resisted, the service life of the fan is prolonged, noise generated inside the fan can be eliminated and blocked by the noise reduction layer 1145, and the influence of the noise on the normal operation of people caused by the transmission of the noise to the outside can be; install dust collecting equipment 116 in the inner chamber of working barrel 11, and dirt conveying pipe 1163 connects respectively at the both ends of storing up dirt chamber 1162, and dust absorption head 1161 communicates the inner chamber of storing up dirt chamber 1162 for some dusts that the fan during operation produced in working barrel 11 can in time be cleared up with dust absorption head 1161, avoid these dusts to influence the work efficiency of fan, thereby ensured the orbital noncongestion of fan operation and reduced the running noise, also improved the functionality of fan to a certain extent.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a low noise centrifugal fan, includes shell (1) and supporting mechanism (2), the lower extreme of shell (1) has set firmly supporting mechanism (2), its characterized in that: the shell (1) comprises a working cylinder (11) and a filter cylinder (12), one side of the working cylinder (11) is fixedly connected with the filter cylinder (12), a primary filter screen (121) and a secondary filter screen (122) are sequentially arranged in an inner cavity of the filter cylinder (12), and a supporting mechanism (2) is arranged on the lower end face of the working cylinder (11);

the supporting mechanism (2) comprises supporting legs (21), mounting screw holes (22) and reinforcing blocks (23), and the upper end faces of the supporting legs (21) are respectively provided with two mounting screw holes (22).

2. A low noise centrifugal fan according to claim 1, wherein: the outer wall of the working barrel (11) is respectively provided with a temperature display (111) and a plurality of radiating fins (112), and the radiating fins (112) are made of aluminum alloy materials.

3. A low noise centrifugal fan according to claim 1, wherein: install fan body (113) in the inner chamber of working barrel (11), fan body (113) comprises first rotary drum (1131), gear motor (1132), second rotary drum (1133) and rotating vane (1134), and second rotary drum (1133) is connected through gear motor (1132) in first rotary drum (1131), and all is provided with a plurality of rotating vane (1134) on the outer wall of first rotary drum (1131) and second rotary drum (1133).

4. A low noise centrifugal fan according to claim 1, wherein: the inner wall of the working barrel (11) is provided with a protective layer (114), the protective layer (114) is composed of a buffer layer (1141), an insulating layer (1142), a sealing layer (1143), a heat insulating layer (1144) and a noise reduction layer (1145), and the noise reduction layer (1145) is made of a sound-proof felt material.

5. A low noise centrifugal fan according to claim 1 or 2, wherein: the inner wall of the working barrel (11) is provided with a temperature sensor (115), and the temperature sensor (115) is electrically connected with the temperature display (111).

6. A low noise centrifugal fan according to claim 1, wherein: the dust collection device (116) is installed in the inner cavity of the working barrel (11), the dust collection device (116) is composed of a plurality of dust collection heads (1161), a dust storage cavity (1162) and a dust conveying pipe (1163), the dust conveying pipe (1163) is connected to two ends of the dust storage cavity (1162) respectively, and the dust collection heads (1161) are communicated with the inner cavity of the dust storage cavity (1162).

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