CN213877561U

CN213877561U - Noise reduction device for air suction type smoke detector

Info

Publication number: CN213877561U
Application number: CN202023142676.4U
Authority: CN
Inventors: 宋文超; 李娜; 朱嵘
Original assignee: Shanghai Weitan Intelligent Technology Co ltd
Current assignee: Shanghai Weitan Intelligent Technology Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-08-03
Anticipated expiration: 2030-12-24

Abstract

The utility model discloses a device of making an uproar falls for breathing in formula smoke detector, including falling the box of making an uproar, the inside an organic whole that falls the box of making an uproar is connected with the ladder baffle, the ladder baffle will fall the inner space of making an uproar box and separate for the air inlet chamber of lower part and the room of making an uproar that falls on upper portion, four corners distribution has the noise damping post on the ladder baffle, be connected with the shock attenuation isolation pad on the noise damping post, install the suction fan on the shock attenuation isolation pad, the blow vent has been seted up on the ladder baffle, set up the air inlet that corresponds with the blow vent on the shock attenuation isolation pad, an organic whole that is connected with on the ladder baffle has heterotypic arch, heterotypic arch includes the lug at both ends, forms continuous kink between the outer wall of this lug. The utility model discloses effectively slow down the vibrations that produce when the suction fan moves, avoid producing the noise, multiple times and cavity wall bump when the air current discharges simultaneously realize abundant buffering, increase noise cancelling effect, improve smoke detector's use and experience.

Description

Noise reduction device for air suction type smoke detector

Technical Field

The utility model relates to a smog detects technical field, concretely relates to a device of making an uproar falls for breathing in formula smoke detector.

Background

The air-breathing smoke detection system is a system consisting of a detector and a sampling network pipe. The air suction pump continuously collects air samples from the protected area through a sampling pipe network consisting of PVC pipes or steel pipes and puts the air samples into the detector. The air sample enters the detection cavity after being filtered by the filter assembly to remove dust particles, and the detection cavity is provided with a stable laser light source. Smoke particles scatter the laser light and the scattered light causes highly sensitive light receivers to produce signals. And the photoelectric conversion is completed through system analysis, and the smoke concentration value and the alarm grade thereof are displayed by a display.

At present formula smoke detector that breathes in need use the aspirator pump extraction air when using for continuously gather the air sample, but this in-process can produce great noise during aspirator pump exhaust air, also can produce vibrations when the aspirator pump moves simultaneously, and the noise is made in easy bumping, forms noise pollution, influences smoke detector's use and experiences.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a noise reduction device for an air-breathing smoke detector, which is used to solve the problems mentioned in the background art.

In order to achieve the above and other related objects, the present invention provides a noise reduction device for an air-breathing smoke detector, comprising a noise reduction box, wherein the noise reduction box is internally and integrally connected with a step partition board, the step partition board divides the internal space of the noise reduction box into an air inlet chamber at the lower part and a noise reduction chamber at the upper part, four corners of the step partition board are distributed with noise reduction columns, the noise reduction columns are connected with a shock absorption isolation pad, an air suction fan is installed on the shock absorption isolation pad, the step partition board is provided with air vents, the shock absorption isolation pad is provided with air inlets corresponding to the air vents, the step partition board is integrally connected with a special-shaped bulge, the special-shaped bulge comprises two end convex blocks, a continuous bending part is formed between the outer walls of the convex blocks, a concave part is arranged on the inner wall of the noise reduction box, and a noise reduction chamber is formed between the bending part and the concave part and the inner wall of the noise reduction box, the noise reduction chamber is communicated with the noise reduction chamber, and the corners of the noise reduction chamber are designed to be chamfered.

Preferably, the two ends of the noise reduction box are respectively connected with an air inlet pipe and an air outlet pipe, the air inlet pipe is communicated with the air inlet chamber, and the air outlet pipe is communicated with the anechoic chamber.

Preferably, the sound absorption pad is arranged at the communication part of the sound attenuation chamber and the air outlet pipe, and fine meshes are uniformly arranged on the sound absorption pad.

Preferably, the special-shaped bulge is internally provided with an installation cavity, and the installation cavity is communicated with the noise reduction chamber through an opening on one side.

Preferably, the air outlet of the air suction fan faces the mounting cavity and the silencing chamber.

Preferably, through holes matched with the sound attenuation columns are formed in four corners of the shock absorption isolation pad.

Preferably, the damping and isolating pad and the silencing column are made of soft materials.

Compared with the prior art, the beneficial effects of the utility model are that: through setting up shock attenuation isolation pad and noise damping post, effectively slow down the vibrations that produce when the suction fan moves, prevent suction fan and fall the box of making an uproar and bump, avoid producing the noise, simultaneously through setting up anechoic chamber and sound absorption pad, the anechoic chamber of buckling in succession is passed through to the air after the discharge, the motion path of air has been increased, can make the air current bump with the chamber wall many times, realize abundant buffering, increase the noise elimination effect, through setting up the sound absorption pad, can make the air current evenly discharge through the mesh, further noise elimination, the use that improves smoke detector is experienced.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

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

FIG. 2 is a schematic structural view of the shock-absorbing spacer of the present invention with the shock-absorbing spacer removed;

FIG. 3 is a schematic structural view of the irregular-shaped protrusions of the present invention;

fig. 4 is a top view of the present invention.

Wherein the reference numerals are specified as follows: the noise reduction box comprises a noise reduction box 1, an air inlet chamber 101, a noise reduction chamber 102, a concave part 103, a silencing chamber 104, a stepped partition plate 2, a silencing column 3, a damping isolation pad 4, an air suction fan 5, a special-shaped protrusion 6, a continuous bent part 601, a mounting cavity 602, an air inlet pipe 7, an air outlet pipe 8 and a sound absorption pad 9.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

It should be understood that the structure, ratio, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention does not have the essential significance in the technology, and any modification of the structure, change of the ratio relationship or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

As shown in fig. 1-4, the utility model provides a noise reduction device for air suction type smoke detector, which comprises a noise reduction box 1, wherein the noise reduction box 1 is internally and integrally connected with a step partition plate 2, the step partition plate 2 divides the internal space of the noise reduction box 1 into an air inlet chamber 101 at the lower part and a noise reduction chamber 102 at the upper part, four corners of the step partition plate 2 are distributed with noise reduction columns 3, the noise reduction columns 3 are connected with a shock absorption isolation pad 4, the shock absorption isolation pad 4 is provided with an air suction fan 5, the step partition plate 2 is provided with air vents, the shock absorption isolation pad 4 is provided with air inlets corresponding to the air vents, the step partition plate 2 is integrally connected with special-shaped bulges 6, the special-shaped bulges 6 comprise convex blocks at two ends, a continuous bending part 601 is formed between the outer walls of the convex blocks, a concave part 103 is arranged on the inner wall of the noise reduction box 1, a noise reduction chamber 104 is formed between the bending part and the concave part 103 and the inner wall of the noise reduction box 1, the silencing chamber 104 is communicated with the noise reduction chamber 102, and the corners of the silencing chamber 104 are designed to be chamfered.

The two ends of the noise reduction box 1 are respectively connected with an air inlet pipe 7 and an air outlet pipe 8, the air inlet pipe 7 is communicated with the air inlet chamber 101, and the air outlet pipe 8 is communicated with the silencing chamber 104.

Furthermore, a sound absorption pad 9 is installed at the communication position of the sound attenuation chamber 104 and the air outlet pipe 8, and fine meshes are uniformly arranged on the sound absorption pad 9.

The special-shaped protrusion 6 is further provided with a mounting cavity 602, the mounting cavity 602 is communicated with the noise reduction chamber 102 through an opening on one side, the mounting cavity 602 is used for mounting a filter assembly, and the collected air sample enters the laser cavity after being filtered by the filter assembly to remove interference particles.

Further, the air outlet of the air suction fan 5 faces the mounting cavity 602 and the sound-deadening chamber 104.

Wherein, the four corners of the shock absorption isolation pad 4 are provided with through holes matched with the noise reduction column 3.

Wherein, the damping and isolating pad 4 and the silencing column 3 are both made of soft materials.

The working principle is as follows: when the smoke detector is used, the air suction fan 5 is started, air sequentially passes through the air inlet pipe 7, the air inlet chamber 101, the air vent and the air inlet and is blown out from the air outlet of the air suction fan 5, in the process, vibration generated when the air suction fan 5 runs is effectively relieved by the isolating pad and the silencing column 3, a part of blown air flow is collected and enters the filter assembly installed in the installation cavity 602, the collected air sample enters the laser cavity after interference particles are filtered by the filter assembly, the other part of air flow enters the silencing chamber 104 which is bent continuously, the movement path of the air is increased, the air flow can collide with the wall of the cavity for multiple times, sufficient buffering is realized, the silencing effect is increased, finally, the air flow passes through the sound absorption pad 9 and is uniformly discharged through meshes, noise is further eliminated, and the use experience of the smoke detector is improved.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A noise reduction device for an air suction type smoke detector is characterized by comprising a noise reduction box, wherein a step partition plate is integrally connected inside the noise reduction box and divides the inner space of the noise reduction box into an air inlet chamber at the lower part and a noise reduction chamber at the upper part, noise elimination columns are distributed at four corners on the step partition plate and are connected with a damping isolation pad, an air suction fan is installed on the damping isolation pad, an air vent is arranged on the step partition plate, an air inlet corresponding to the air vent is arranged on the damping isolation pad, special-shaped bulges are integrally connected on the step partition plate and comprise convex blocks at two ends, continuous bending parts are formed between the outer walls of the convex blocks, concave parts are arranged on the inner wall of the noise reduction box, noise elimination chambers are formed between the connecting bending parts and the concave parts and the inner wall of the noise reduction box and are communicated with the noise reduction chambers, the corners of the anechoic chamber are designed to be chamfered.

2. A noise reducing device for an aspirated smoke detector according to claim 1, wherein: the two ends of the noise reduction box are respectively connected with an air inlet pipe and an air outlet pipe, the air inlet pipe is communicated with the air inlet chamber, and the air outlet pipe is communicated with the anechoic chamber.

3. A noise reducing device for an aspirated smoke detector according to claim 2, wherein: the sound absorption pad is installed at the intercommunication department of amortization room and outlet duct, seted up fine mesh on the sound absorption pad evenly.

4. A noise reducing device for an aspirated smoke detector according to claim 1, wherein: still be equipped with the installation cavity in the heterotypic arch, the installation cavity is through the opening and the room intercommunication of making an uproar of falling of one side.

5. A noise reducing device for an air breathing smoke detector according to claim 4, wherein: the air outlet of the air suction fan faces the mounting cavity and the silencing chamber.

6. A noise reducing device for an aspirated smoke detector according to claim 1, wherein: and through holes matched with the silencing columns are formed in four corners of the damping isolation pad.

7. A noise reducing device for an aspirated smoke detector according to claim 1, wherein: the shock absorption isolation pad and the silencing column are made of soft materials.