Silent pipeline fan

Abstract

A mute pipeline fan comprises a fan pipeline, an air inlet pipe opening and an air outlet pipe opening, the air inlet pipe opening and the air outlet pipe opening are installed at the two ends of the fan pipeline respectively, an intermediate is arranged in the fan pipeline, a motor support is arranged on the intermediate, two motors which are in bilateral symmetry are installed on the motor support, and the motors are connected with impellers. An air inlet cover and an air outlet cover are further arranged in the fan pipeline, the air inlet cover is located between the middle body and the air inlet pipe opening, and the air outlet cover is located between the middle body and the air outlet pipe opening. A plurality of sound absorption holes are evenly formed in the air inlet cover, the middle body and the air outlet cover, and the outer surfaces of the air inlet cover, the middle body and the air outlet cover are covered with sound insulation cotton. According to the utility model, the design of double direct-current motors is adopted and can work independently; the control device is located in the base and is protected through the structure of the base. The sound insulation cotton, the sound insulation cavity and the annular cavity are added, and the combined structure can reduce noise to the maximum extent; in addition, due to the rubber ribs, when the fan is connected with an external pipeline, the sealing performance is better.

Description

Technical Field

[0001] The utility model relates to a fan, in particular to a silent pipeline fan. Background Art

[0002] Duct fans are fans that have control parameters such as air volume, total pressure, efficiency, noise, motor power, etc. They are also called duct ventilators. Fans for different purposes are selected based on the physical and chemical properties of the transported gas.

[0003] The existing duct fans will generate a lot of noise during operation, causing sound pollution. Moreover, the duct fans are only equipped with a single motor, and attention must be paid to the positions of the air inlet and outlet during installation. In addition, the existing duct fan casing is an integrated structure, which makes subsequent maintenance and disassembly inconvenient. Summary of the invention

[0004] The utility model aims to solve the existing technical problem by providing a silent duct fan, which can improve the silent performance and reduce the noise pollution degree; at the same time, the shell adopts a split structure, which is more convenient for disassembly and assembly; it is also equipped with dual motors and remote control, and the air inlet and outlet can be controlled arbitrarily.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] The utility model discloses a silent duct fan, comprising a fan duct, an air inlet port and an air outlet port, the air inlet port and the air outlet port are respectively installed at two ends of the fan duct, an intermediate body is provided in the fan duct, a motor bracket is provided on the intermediate body, two motors symmetrically mounted on the motor bracket, and the motor is connected to an impeller; an air inlet hood and an air outlet hood are also provided in the fan duct, the air inlet hood is located between the intermediate body and the air inlet port, and the air outlet hood is located between the intermediate body and the air outlet port; a plurality of sound absorbing holes are evenly arranged on the air inlet hood, the intermediate body and the air outlet hood, and the outer surfaces of the air inlet hood, the intermediate body and the air outlet hood are covered with sound insulation cotton.

[0007] The utility model adopts a double motor structure which is symmetrically arranged on the left and right, which can work independently. Even if the air inlet and outlet directions are connected incorrectly, normal operation can be achieved. Moreover, when necessary, the double motors can work simultaneously. By wrapping the air inlet cover, the intermediate body and the air outlet cover with sound insulation cotton, the noise generated when the fan is working can be reduced to a limited extent.

[0008] A plurality of quick fixing structures are respectively provided between the air inlet pipe opening and the fan duct, and between the air outlet pipe opening and the fan duct, and the quick fixing structures include a card slot and a protrusion, the card slot has an embedding slot and a card slot which are vertically arranged, and a card point is provided in the card slot; the shape of the protrusion is consistent with the card slot, and a positioning slot is provided on the protrusion. The protrusion passes through the embedding slot and is rotated so that the protrusion moves toward the card slot, and then the card point is matched with the positioning slot, so that the air inlet pipe opening and the fan duct, as well as the air outlet pipe opening and the fan duct are fixedly connected.

[0009] Through the quick fixing structure, the fan duct, the air inlet pipe port and the air outlet pipe port are split structures, which makes disassembly and assembly and later maintenance more convenient; the quick fixing structure is evenly distributed in a circle between the air inlet pipe port and the fan duct, and between the air outlet pipe port and the fan duct. In this way, when the protrusion matches the card slot, the air inlet pipe port is fixed relative to the fan duct, and the air outlet pipe port is fixed relative to the fan duct.

[0010] A base is installed at the bottom of the fan duct, and a cavity is provided in the base. The control device is arranged in the cavity. A wire arrangement hole is provided on the intermediate body, and the wires of the motor are connected to the control device through the wire arrangement hole.

[0011] The utility model cleverly designs the control device inside the base, that is, between the base and the fan pipeline, so that the control device is effectively protected and the entire fan becomes more streamlined.

[0012] Flanges are respectively arranged at both ends of the fan duct, and the two flanges respectively abut against the air inlet cover and the air outlet cover, so that the air inlet cover, the air outlet cover and the fan duct are relatively fixed.

[0013] The motor is an EC direct current motor.

[0014] A sound insulation cavity is formed between the air inlet cover, the air outlet cover, the intermediate body and the fan duct.

[0015] The air inlet and outlet have the same structure, including an external fixed pipe, an internal pipe and an external pipe. An annular cavity is formed between the external fixed pipe and the internal pipe, and the internal pipe is connected to the outer end of the air inlet cover or the air outlet cover.

[0016] The design of the soundproof cavity and annular cavity can further reduce noise.

[0017] The outer wall of the external pipe of the air inlet and outlet is provided with an annular groove, and a rubber rib is arranged in the annular groove.

[0018] With the rubber ribs, the air inlet and outlet ports are more firmly and sealed when connected to the external pipe.

[0019] In summary, the technical effects that can be achieved by the utility model are:

[0020] The silent duct fan of the utility model adopts a dual DC motor design, can work independently, is easy to install the fan, and can also reduce the labor installation cost; the control device is located in the base, and the base structure has a protective effect on it; sound insulation cotton, sound insulation cavity, and annular cavity are added, and their combined structure can minimize noise; in addition, the rubber ribs can make the fan more tightly sealed when connected to the external pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the silent duct fan of the utility model;

[0022] Figure 2 It is a three-dimensional exploded view of the utility model silent duct fan;

[0023] Figure 3 It is a three-dimensional diagram of the air inlet cover, the intermediate body and the air outlet cover of the silent duct fan of the utility model connected together;

[0024] Figure 4 It is a cross-sectional view of the silent duct fan of the utility model;

[0025] Figure 5 It is a schematic diagram of the quick fixing structure of the silent duct fan of the utility model. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0027] See also Figures 1 to 5 The utility model provides a silent duct fan, comprising a fan duct 1, an air inlet duct port 2 and an air outlet duct port 3, wherein the air inlet duct port 2 and the air outlet duct port 3 are respectively installed at two ends of the fan duct 1, an intermediate body 4 is arranged in the fan duct 1, a motor bracket 5 is arranged on the intermediate body 4, two EC DC motors 6 are installed on the motor bracket 5 which are symmetrical on both sides, and the EC DC motor 6 is connected with an impeller 7; an air inlet cover 8 and an air outlet cover 9 are also arranged in the fan duct 1, the air inlet cover 8 is located between the intermediate body 4 and the air inlet duct port 2, and the air outlet cover 9 is located between the intermediate body 4 and the air outlet duct port 3; a plurality of sound absorbing holes 10 are evenly arranged on the air inlet cover 8, the intermediate body 4 and the air outlet cover 9, and the outer surfaces of the air inlet cover 8, the intermediate body 4 and the air outlet cover 9 are covered with sound insulation cotton (not shown in the figure).

[0028] The utility model adopts a double motor structure which is symmetrically arranged on the left and right, and can work independently. Even if the air inlet and outlet directions are connected incorrectly, normal operation can be achieved. Moreover, when necessary, the double motors can work simultaneously. By wrapping the air inlet cover 8, the intermediate body 4, and the air outlet cover 9 with sound insulation cotton (not shown in the figure), the noise generated when the fan is working can be reduced to a limited extent.

[0029] The fan duct 1, the air inlet duct port 2 and the air outlet duct port 3 of the utility model are of a split structure, which is convenient for later disassembly, assembly and maintenance. Moreover, in order to realize the convenience of disassembly and assembly, we respectively set a number of quick fixing structures between the air inlet duct port 2 and the fan duct 1, and between the air outlet duct port 3 and the fan duct 1. The quick fixing structure includes a card slot 11 and a protrusion 12. The card slot 11 has an embedding slot 13 and a card slot 14 which are vertically arranged, and a card point 15 is provided in the card slot 14; the shape of the protrusion 12 is consistent with the card slot 11, and a positioning slot 16 is provided on the protrusion 12. The protrusion 12 passes through the embedding slot 13 and is rotated so that the protrusion 12 moves toward the card slot 14, and then the card point 15 is matched with the positioning slot 16, so that the air inlet duct port 2 and the fan duct 1, and the air outlet duct port 3 and the fan duct 1 are fixedly connected.

[0030] Through the quick fixing structure, the fan duct 1, the air inlet duct 2, and the air outlet duct 3 are split structures, which are more convenient for disassembly and assembly and later maintenance; the quick fixing structure is evenly distributed in a circle between the air inlet duct 2 and the fan duct 1, and between the air outlet duct 3 and the fan duct 1. Specifically, the card slot 11 is set on the inner wall of the air inlet duct 2 and the inner wall of the air outlet duct 3, and the protrusion 12 is set on the outer wall of the fan duct 1. We put the air inlet duct 2 on the fan duct 1, and make the card slot 11 correspond to the protrusion 12 one by one, so that the protrusion 12 is inserted into the embedding groove 13 of the card slot 11. After being inserted in place, the air inlet duct 2 is rotated to make the card slot rotate toward the protrusion 12. Finally, the protrusion 12 squeezes over the card point 15, so that the card point 15 is in the positioning groove 16. In this way, the connection between the air inlet duct 2 and the fan duct 1 is completed. The connection between the air outlet duct 3 and the fan duct 1 is consistent with the above.

[0031] A base 17 is installed at the bottom of the fan duct 1. The base 17 fixes the fan as a whole at a corresponding position by four screws. A cavity 18 is provided in the base 17. The control device 19 is arranged in the cavity 18. In addition, a mounting hole 20 is opened on the bottom surface of the base 17. The mounting hole 20 is connected with the cavity 18, which is convenient for the installation of the control device 19. A cover plate 21 is placed on the mounting hole 20 to seal the cavity 18. A wiring hole 22 is provided on the intermediate body 4. The wires of the EC DC motor 6 are connected to the control device 19 through the wiring hole 22.

[0032] The utility model cleverly designs the control device 19 inside the base 17, that is, between the base 17 and the fan duct 1, so that the control device 19 is effectively protected and the entire fan becomes more streamlined.

[0033] Flanges 23 are respectively provided at both ends of the fan duct 1 , and the two flanges 23 respectively abut against the air inlet cover 8 and the air outlet cover 9 , so that the air inlet cover 8 , the air outlet cover 9 and the fan duct 1 are relatively fixed.

[0034] A sound insulation cavity 28 is formed between the air inlet cover 8 , the air outlet cover 9 , the intermediate body 4 and the fan duct 1 .

[0035] The air inlet 2 and the air outlet 3 have the same structure, including an external fixed pipe 24, an internal pipe 25 and an external pipe 26. An annular cavity 27 is formed between the external fixed pipe 24 and the internal pipe 25. The internal pipe 25 is connected to the outer end of the air inlet cover 8 or the air outlet cover 9.

[0036] The design of the soundproof cavity 28 and the annular cavity 27 has the effect of further reducing noise.

[0037] The outer wall of the external pipe of the air inlet pipe port 2 and the air outlet pipe port 3 has an annular groove 29, and a rubber rib (not shown in the figure) is arranged in the annular groove 29.

[0038] With the rubber ribs (not shown in the figure), the air inlet pipe opening 2 and the air outlet pipe opening 3 are more firmly and tightly sealed when connected to the external pipe.

[0039] In summary, the silent duct fan of the utility model adopts the design of dual EC DC motors 6, can work independently, is convenient for the installation of the fan, and can also reduce the labor installation cost; the control device 19 is located in the base 17, and is protected by the structure of the base 17; sound insulation cotton (not shown in the figure), sound insulation cavity 28, and annular cavity 27 are added, and their combined structure can reduce noise to the maximum extent; in addition, the rubber ribs (not shown in the figure) can make the fan more sealed when connected to the external pipeline.

[0040] The silent duct fan provided by the embodiment of the utility model is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the technical solution disclosed by the utility model; at the same time, for general technical personnel in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation of the utility model.

Claims

1. A silent duct fan, comprising a duct, an air inlet and an air outlet, wherein the air inlet and the air outlet are respectively installed at two ends of the duct, and characterized in that: The fan duct is provided with an intermediate body, the intermediate body is provided with a motor bracket, two motors are installed on the motor bracket, and the motors are connected to impellers; the fan duct is also provided with an air inlet cover and an air outlet cover, the air inlet cover is located between the intermediate body and the air inlet pipe opening, and the air outlet cover is located between the intermediate body and the air outlet pipe opening; a plurality of sound-absorbing holes are evenly arranged on the air inlet cover, the intermediate body, and the air outlet cover, and the outer surfaces of the air inlet cover, the intermediate body, and the air outlet cover are covered with sound insulation cotton; the air inlet pipe opening and the fan duct are connected. Several quick fixing structures are respectively provided between the pipes and between the air outlet and the fan pipe, and the quick fixing structures include a card slot and a protrusion, the card slot has an embedding slot and a card slot arranged vertically, and a card point is provided in the card slot; the shape of the protrusion is consistent with the card slot, and there is a positioning slot on the protrusion. The protrusion passes through the embedding slot and is rotated so that the protrusion moves toward the card slot, and then the card point is matched in the positioning slot, so that the air inlet and the fan pipe, and the air outlet and the fan pipe are fixedly connected; 2. A silent duct fan according to claim 1, characterized in that: A base is installed at the bottom of the fan duct, and a cavity is provided in the base. The control device is arranged in the cavity. A wire arrangement hole is provided on the intermediate body, and the wires of the motor are connected to the control device through the wire arrangement hole.

3. The silent duct fan according to claim 1, characterized in that: Flanges are respectively arranged at both ends of the fan duct, and the two flanges respectively abut against the air inlet cover and the air outlet cover, so that the air inlet cover, the air outlet cover and the fan duct are relatively fixed.

4. The silent duct fan according to claim 1, characterized in that: The motor is an EC direct current motor.

5. The silent duct fan according to claim 1, characterized in that: A sound insulation cavity is formed between the air inlet cover, the air outlet cover, the intermediate body and the fan duct.

6. The silent duct fan according to claim 1, characterized in that: The air inlet and outlet have the same structure, including an external fixed pipe, an internal pipe and an external pipe. An annular cavity is formed between the external fixed pipe and the internal pipe, and the internal pipe is connected to the outer end of the air inlet cover or the air outlet cover.

7. The silent duct fan according to claim 1, characterized in that: The outer wall of the external pipe of the air inlet and outlet is provided with an annular groove, and a rubber rib is arranged in the annular groove.

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