CN218511094U

CN218511094U - A two air intakes of EPP fall fan machine casees of making an uproar for pipeline new trend system

Info

Publication number: CN218511094U
Application number: CN202222478172.2U
Authority: CN
Inventors: 钱江; 万锦烽; 吴燕
Original assignee: Suzhou Xianghou New Material Technology Co ltd
Current assignee: Suzhou Xianghou New Material Technology Co ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2023-02-21
Anticipated expiration: 2032-09-19

Abstract

The utility model discloses an EPP double-air-inlet noise-reduction fan case for a pipeline fresh air system, which comprises a rectangular case body, wherein the rectangular case body is provided with a front wall provided with an air outlet, a fan cavity used for arranging a fan is formed inside the rectangular case body, and the front part of the fan cavity is connected with the air outlet; the air-conditioning fan is characterized in that two air inlet ducts which are distributed on the left side and the right side of a fan cavity and are separated from the fan cavity through corresponding partition plates are arranged inside the rectangular box body, the front ends of the two air inlet ducts are respectively connected with two air inlets arranged on the front wall, the rear ends of the two air inlet ducts are respectively connected with two silencing cavities, the airflow circulation sectional area of each silencing cavity is larger than that of the air inlet duct connected with the silencing cavity, silencing cotton is attached to the inner wall of each silencing cavity, and the two silencing cavities are communicated with the rear portion of the fan cavity through communicating ports arranged on the corresponding partition plates. The utility model discloses need not just can possess better noise reduction effect with the help of outside amortization subassembly, and can not influence the radiating efficiency of fan.

Description

A two air intakes of EPP fall fan machine casees of making an uproar for pipeline new trend system

Technical Field

The utility model relates to a fan machine case of making an uproar falls in two air intakes of EPP for pipeline new trend system.

Background

The pipeline fresh air system is a pipe network type purifying ventilation air interchanger which is widely installed in places such as factory workshops, large-scale offices, meeting rooms, shopping malls, entertainment places and the like at present, and is generally formed by assembling and connecting components such as a fan, a fan case, an air duct pipeline and the like, and part of the pipeline fresh air system often comprises heat exchange equipment.

The fan case is an important component used for fixing a fan and connecting an air channel pipeline in a current pipeline fresh air system, and as a general structure, the inside of the existing fan case mainly comprises a fan cavity for arranging the fan, two ends of the fan cavity are connected with an air inlet and an air outlet on the outer wall of the fan case, and a slot for inserting a filter screen is arranged on a support in the case body between the air inlet and the fan cavity.

The arrangement position of the fan case in a pipeline fresh air system pipe network usually determines the specific function of the fan case, for example, the fan case is arranged on the air inlet side of the system, and the fan case mainly depends on an internal fan and a filter screen to filter and purify outdoor air and then introduces the air into an indoor air supply pipe network; the blower case arranged on the exhaust side filters and purifies the air in the indoor exhaust pipe network and then exhausts the air to the outdoor by the internal blower and the filter screen. Of course, the fan cases can also be distributed as nodes in the system pipe network, and the fans inside the fan cases are used for providing power for the air flow in the pipe network.

The fan chassis in the traditional pipeline fresh air system is mainly made by splicing metal parts such as iron sheets or aluminum alloy plates, but along with the development and application of EPP materials, because the EPP materials have better sound insulation, shock absorption, heat insulation and heat preservation effects, the fan chassis of a plurality of pipeline fresh air systems are completely made by foaming and molding the EPP materials at present. This kind of EPP fan machine case not only can reduce the vibration noise of inside air flow noise and inside fan operation, can also effectively prevent that the box is inside to produce the comdenstion water or freeze.

However, the existing fan case has the following problems in the design of the internal air duct structure:

in the internal structure of the existing fan case, a fan cavity, an air inlet and an air outlet are positioned on the same axis, and the path from the air inlet and the air outlet to the fan cavity is short. In the work, air rapidly flows into the fan chamber from the air inlet and then directly flows to the air outlet under the action of the fan, the path of the air in the fan case is very short, rapid airflow cannot be blocked and collided, the wind force cannot be weakened, high-frequency sound waves generated in the fan case cannot be inhibited, and therefore wind noise cannot be really reduced.

In order to reduce the wind noise of the fan case, the conventional method in the industry at present is to fill silencing cotton on the inner side of a fan cavity to absorb the wind noise, but the defects are that the heat dissipation efficiency of the fan is greatly reduced, and the failure rate is improved.

The other method is that a section of silencing hose is connected to the air outlet, the other end of the silencing hose is connected to a silencing elbow lined with silencing cotton, and then the silencing elbow is connected to a system pipe network. The pipeline fresh air system has the obvious defects that on one hand, the production cost of the pipeline fresh air system is increased due to the addition of the matched parts, on the other hand, the installation time of the pipeline fresh air system is greatly prolonged, the installation cost is increased, meanwhile, the failure rate of a pipe network is improved to a certain extent, and the maintenance cost is increased.

Disclosure of Invention

The utility model discloses the purpose is: the utility model provides a two air inlet of EPP fall fan machine casees of making an uproar for pipeline new trend system, it need not just can possess better noise reduction effect with the help of outside amortization subassembly, and can not influence the radiating efficiency of fan.

The technical scheme of the utility model is that: an EPP double-air-inlet noise-reduction fan case for a pipeline fresh air system comprises a rectangular case body, a fan cavity and a fan blade, wherein the rectangular case body is provided with a front wall provided with an air outlet; the air flow circulating device is characterized in that two air inlet ducts which are distributed on the left side and the right side of a fan cavity and are separated from the fan cavity through corresponding partition plates are arranged inside the rectangular box body, the front ends of the two air inlet ducts are respectively connected with two air inlets arranged on the front wall, the rear ends of the two air inlet ducts are respectively connected with two silencing cavities, the air flow circulating sectional area of each silencing cavity is larger than that of the air inlet duct connected with the silencing cavity, silencing cotton is attached to the inner wall of each silencing cavity, and the two silencing cavities are communicated with the rear portion of the fan cavity through communicating ports arranged on the corresponding partition plates.

Further, every in the utility model the shaping has the slot that is used for the cartridge filter screen on the pipe wall of air inlet duct and amortization cavity intercommunication department.

Furthermore, the utility model discloses in every the rear end of air inlet duct all links to each other with corresponding amortization cavity through toper hole enlargement section, the slot shaping is on the pipe wall of the terminal of toper hole enlargement section and amortization cavity intercommunication department. The conical expanding section is used for slowing down the air flow speed in the air inlet duct, so that the impact force of the air flow on the filter screen is reduced, and the service life of the filter screen is prolonged.

Further, the utility model discloses in every amortization cavity inner wall shaping have be used for with the air current guide extremely the guide cambered surface of intercommunication mouth. The design of the guide cambered surface is beneficial to further reducing the impact kinetic energy of the airflow and the inner wall of the silencing chamber and reducing the noise.

Further, the utility model discloses in be equipped with two on the antetheca the air outlet, and the inboard shaping of antetheca has T shape shunting block, separates into the air outlet duct of two symmetries with the front portion of fan cavity, links to each other with two air outlets respectively. The design of two exhanst ducts is convenient for implement with a plurality of wind channel pipelines in the pipe network of pipeline new trend system and is connected to also do benefit to and reduce the trend of wind, reduce the noise of air outlet.

Further, in the utility model discloses in two air inlet ducts distribute about fan cavity bilateral symmetry to every air inlet duct all is parallel with the axis of the fan of settling in the fan cavity, and the orientation of the intercommunication mouth on the baffle is perpendicular with the axis of fan.

Further, the utility model discloses in the rectangle box has fan wiring cavity in the inboard shaping of its back wall, and it has wiring entry and fan cavity intercommunication to open on the fan wiring cavity, and the top of fan wiring cavity is with seting up the wiring export intercommunication on the rectangle box roof, is equipped with detachable wiring apron in this wiring export. The utility model discloses an among the structural design, the air current in the fan cavity is flowed into through the air inlet duct can take away fan wiring cavity outer wall heat to compromise and implement the cooling to the inside line elements of fan wiring cavity.

Further, in the utility model discloses in the diapire of rectangle box is equipped with detachable fan maintenance apron. Because the utility model discloses fan machine case installation can generally not be dismantled after fixed, sets up detachable fan maintenance apron convenience and maintains inside fan at the diapire.

The utility model discloses during the in-service use, install fan and filter screen to the rectangle box in, same with prior art, the utility model discloses can arrange in pipeline new trend system air-supply side, rely on inside fan and filter screen to introduce indoor air supply pipe network behind outdoor filtration purification, also can arrange in system exhaust side, rely on inside fan and filter screen to purify the back row to outdoor with the filtration in the indoor exhaust pipe network. Of course, the fan case can also be distributed as a node in a system pipe network, and the fans inside the fan case are used for providing power for air flow in the pipe network.

The utility model has the advantages that:

1. the utility model discloses after the in-service installation uses, its design that can pass through two air inlet ducts will get into the inside air current of rectangle box and divide into two strands and extension air current route, and the amortization cavity that rethread air current flow cross-sectional area increases slows down the wind speed and makes the air current turn to back entering fan cavity to this reduces the kinetic energy of air current rapidly, and combines the amortization cotton in the amortization cavity effectively to restrain and absorb the high frequency noise of air current, makes the interior work wind noise greatly reduced of rectangle box.

2. The utility model discloses well special amortization cavity of design sets up the amortization cotton, and the non-directness is arranged the amortization cotton in the fan cavity, and this is favorable to the heat dissipation of fan greatly, can not lead to fan radiating efficiency greatly reduced like prior art, and the fault rate improves.

3. The utility model discloses the integrated design of well air inlet duct and amortization cavity is equivalent to and has moved into rectangle box inside outside hose and amortization elbow among the prior art, make full use of rectangle box inner space to the shaping is made conveniently, can practice thrift manufacturing cost. Meanwhile, the original installation time of installing the silencing hose and the silencing elbow is greatly shortened, the installation cost is reduced, the failure rate of a pipe network of the pipeline fresh air system is reduced to a certain extent, and the maintenance cost is reduced.

4. The utility model discloses in the rear end design toper hole enlargement section of every air inlet duct links to each other with corresponding amortization cavity to the slot shaping of the filter screen of pegging graft is on the pipe wall of the terminal of toper hole enlargement section and amortization cavity intercommunication department. The conical expanding section in the design can slow down the air speed in the air inlet duct and reduce the impact force of the air flow on the filter screen, thereby prolonging the service life of the filter screen.

5. The utility model discloses an among the structural design, the air current in the fan cavity is flowed into through the air inlet duct can take away fan wiring cavity outer wall heat to compromise in the in-service use and implement the cooling to the inside line elements of fan wiring cavity.

Drawings

The invention will be further described with reference to the following drawings and examples:

FIG. 1 is a schematic view of the external three-dimensional structure of the present invention;

fig. 2 is a top view of the present invention;

FIG. 3 is a top view of the internal structure of the rectangular box of the present invention;

fig. 4 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A in fig. 3.

Wherein: 1. a rectangular box body; 1a; a front wall; 1b, a rear wall; 1c, a top wall; 1d, a bottom wall; 2. an air outlet; 3. a fan chamber; 4. a partition plate; 4a, a communication port; 5. an air inlet duct; 5a, a slot; 6. an air inlet; 7. a sound-deadening chamber; 7a, a guide arc surface; 8. a T-shaped shunting block; 9. an air outlet channel; 10. a fan wiring chamber; 10a, a wiring inlet; 11. a wiring cover plate; 12. the fan maintains the apron.

Detailed Description

The embodiment is as follows: the utility model provides a concrete implementation of this kind of a two air inlet noise reduction fan machine casees of EPP for pipeline new trend system explains as follows with what fig. 1~ 4 show:

the EPP double-air-inlet noise reduction fan case for the pipeline fresh air system is a rectangular case body 1 as in the conventional technology, and is formed by a front wall 1a, a rear wall 1b, a top wall 1c, a bottom wall 1d, a left side wall and a right side wall (not marked in the figure) in a surrounding mode. During specific production, the rectangular box body 1 is divided into an upper part and a lower part, and the upper part and the lower part are respectively formed by EPP foaming and then are spliced into a whole body as in the conventional technology.

The utility model discloses a core improves and lies in the optimization to 1 inside wind channel structure of rectangle box.

Referring to fig. 1 and 3, the rectangular box 1 of the present embodiment is provided with two air outlets 2 on a front wall 1a thereof, and two air inlets 6 located outside the two air outlets 2, and a blower chamber 3 for accommodating a blower (omitted in the drawings) is formed inside the rectangular box 1.

Referring to fig. 3 and 4, two air inlet ducts 5 distributed on the left and right sides of the fan chamber 3 and separated from the fan chamber 3 by corresponding partition plates 4 are arranged inside the rectangular box 1, the front ends of the two air inlet ducts 5 are respectively connected with two air inlets 6 on the front wall 1a, the rear ends of the two air inlet ducts 5 are respectively connected with two silencing chambers 7, the air flow cross-sectional area of each silencing chamber 7 is larger than that of the air inlet duct 5 connected with the silencing chamber 7, silencing cotton (omitted in the figure) is attached to the inner wall of each silencing chamber 7, and the two silencing chambers 7 are communicated with the rear part of the fan chamber 3 through communication ports 4a arranged on the corresponding partition plates 4.

The two air inlet ducts 5 are symmetrically distributed left and right with respect to the fan chamber 3 in this embodiment, and each air inlet duct 5 is parallel to the axis of the fan disposed in the fan chamber 3, and the communication opening 4a of the partition plate 4 is oriented perpendicular to the axis of the fan.

Still referring to fig. 3 and 4, in this embodiment, the rear end of each air inlet duct 5 is connected to the corresponding sound-deadening chamber 7 through a tapered expanding section 5b, and a slot 5a for inserting a filter screen (not shown) is formed on the pipe wall at the connection between the tail end of the tapered expanding section 5b and the sound-deadening chamber 7. The conical expanding section 5b is used for slowing down the air flow speed in the air inlet duct 5, so that the impact force of the air flow on the filter screen is reduced, and the service life of the filter screen is prolonged.

As shown in fig. 3, in this embodiment, a T-shaped shunting block 8 is formed on the inner side of the front wall 1a, and divides the front portion of the fan cavity 3 into two symmetrical air outlets 9, which are respectively connected to the two air outlets 2 on the front wall 1 a. The design of the double air outlet channels 9 is convenient for implementing connection with a plurality of air channel pipelines in a pipe network of a pipeline fresh air system, and is also favorable for reducing the wind force and reducing the noise of the air outlet 2.

As shown in fig. 3, the inner wall of each sound deadening chamber 7 in the present embodiment is formed with a guide arc surface 7a for guiding the air flow to the communication port 4 a. The design of the guide cambered surface 7a is beneficial to further reducing the impact kinetic energy of the airflow and the inner wall of the silencing cavity 7 and reducing the noise.

Referring to fig. 1 to 3, in the present embodiment, a fan wiring chamber 10 is formed inside the rear wall 1b of the rectangular box 1, a wiring inlet 10a is formed in the fan wiring chamber 10 to communicate with the fan chamber 3, the top of the fan wiring chamber 10 communicates with a wiring outlet formed in the top wall 1c of the rectangular box 1, and a detachable wiring cover plate 11 is disposed on the wiring outlet. The air flow flowing into the fan chamber 3 through the air inlet duct 5 can take away the heat on the outer wall of the fan wiring chamber 10, so that the circuit elements in the fan wiring chamber 10 can be cooled. Meanwhile, the bottom wall 1d of the rectangular box body 1 is provided with a detachable fan maintenance cover plate 12.

The utility model discloses after the actual installation uses, it can divide into two strands and extension air current route through the inside air current of two air inlet ducts 5's design with getting into rectangle box 1, and the amortization cavity 7 that rethread air current flow cross-sectional area increases slows down the wind speed and makes the air current get into fan cavity 3 after turning to this reduces the kinetic energy of air current rapidly, and combine the cotton high frequency noise that effectively restraines and absorb the air current of amortization in the amortization cavity 7, make the interior work wind of rectangle box 1 make an uproar greatly reduced.

And because the utility model discloses well special amortization cavity 7 of design sets up the amortization cotton, and the non-is directly arranged the amortization cotton in fan cavity 3, and this is favorable to the heat dissipation of fan greatly, can not lead to fan radiating efficiency greatly reduced like prior art, and the fault rate improves. And the combined design of the air inlet duct 5 and the silencing chamber 7 is equivalent to that an external hose and a silencing elbow in the prior art are moved into the rectangular box body 1, the internal space of the rectangular box body 1 is fully utilized, the forming and manufacturing are convenient, and the production cost can be saved. Meanwhile, the original installation time of installing the silencing hose and the silencing elbow is greatly shortened, the installation cost is reduced, the failure rate of a pipe network of the pipeline fresh air system is reduced to a certain extent, and the maintenance cost is reduced.

It should be understood that the above-mentioned embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and the protection scope of the present invention cannot be limited thereby. All modifications made according to the spirit of the main technical solutions of the present invention should be covered within the protection scope of the present invention.

Claims

1. An EPP double-air-inlet noise-reduction fan case for a pipeline fresh air system comprises a rectangular case body (1) and a fan chamber (3) for accommodating a fan, wherein the rectangular case body (1) is provided with a front wall (1 a) provided with an air outlet (2), the front part of the fan chamber (3) is connected with the air outlet (2); the air-conditioning box is characterized in that two air inlet ducts (5) distributed on the left side and the right side of a fan cavity (3) and separated from the fan cavity (3) through corresponding partition plates (4) are arranged inside a rectangular box body (1), the front ends of the two air inlet ducts (5) are respectively connected with two air inlets (6) arranged on a front wall (1 a), the rear ends of the two air inlet ducts (5) are respectively connected with two silencing cavities (7), the air flow cross-sectional area of each silencing cavity (7) is larger than that of the air flow cross-sectional area of the air inlet duct (5) connected with the silencing cavity, silencing cotton is attached to the inner wall of each silencing cavity (7), and the two silencing cavities (7) are communicated with the rear portion of the fan cavity (3) through communicating ports (4 a) arranged on the corresponding partition plates (4).

2. The EPP double-inlet noise reduction fan case for the pipeline fresh air system according to claim 1, wherein a slot (5 a) for inserting a filter screen is formed on a pipe wall at a communication part of each air inlet duct (5) and the silencing chamber (7).

3. The EPP double-air-inlet noise-reduction fan case for the pipeline fresh air system as claimed in claim 2, wherein the rear end of each air inlet duct (5) is connected with the corresponding silencing chamber (7) through a tapered expanding section (5 b), and the slots (5 a) are formed on the pipe wall at the communication position of the tail end of the tapered expanding section (5 b) and the silencing chamber (7).

4. The EPP double-inlet noise reduction fan case for the pipeline fresh air system as claimed in claim 1, wherein the inner wall of each silencing chamber (7) is formed with a guiding cambered surface (7 a) for guiding the air flow to the communication port (4 a).

5. The EPP double-air-inlet noise-reduction fan case for the pipeline fresh air system as claimed in claim 1, wherein the front wall (1 a) is provided with two air outlets (2), a T-shaped shunting block (8) is formed on the inner side of the front wall (1 a) to divide the front part of the fan chamber (3) into two symmetrical air outlets (9) which are respectively connected with the two air outlets (2).

6. EPP double inlet air noise reduction fan box for ducted fresh air system according to claim 1, characterized in that the two inlet ducts (5) are distributed left and right symmetrically with respect to the fan chamber (3) and each inlet duct (5) is parallel to the axis of the fan placed in the fan chamber (3) and the communication opening (4 a) of the partition (4) is oriented perpendicular to the axis of the fan.

7. The EPP double-air-inlet noise-reduction fan case for the pipeline fresh air system as claimed in claim 1, wherein a fan wiring chamber (10) is formed inside the rear wall (1 b) of the rectangular case (1), the fan wiring chamber (10) is provided with a wiring inlet (10 a) communicated with the fan chamber (3), the top of the fan wiring chamber (10) is communicated with a wiring outlet arranged on the top wall (1 c) of the rectangular case (1), and the wiring outlet is provided with a detachable wiring cover plate (11).

8. The EPP double-inlet noise reduction fan case for the pipeline fresh air system as claimed in claim 1, wherein the bottom wall (1 d) of the rectangular case (1) is provided with a detachable fan maintenance cover plate (12).