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Expansive type silencer and fresh air system

A technology of fresh air system and muffler, applied in the direction of space heating and ventilation details, noise suppression, household heating, etc., can solve the problem of inability to achieve broadband noise reduction, and achieve the effect of eliminating noise.

Inactive Publication Date: 2017-09-01
HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But due to figure 1 The expansion tube 03 shown is of fixed length, so figure 1 The muffler shown can only eliminate the noise of certain frequencies, and cannot achieve the purpose of wide-band noise reduction

Method used

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  • Expansive type silencer and fresh air system
  • Expansive type silencer and fresh air system
  • Expansive type silencer and fresh air system

Examples

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Embodiment Construction

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] In describing the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than in...

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Abstract

The invention discloses an expansive type silencer and a fresh air system and relates to the technical field of indoor ventilating and exhausting equipment. The expansive type silencer and the fresh air system are invented for solving the problem that an existing expansive type silencer cannot be used for achieving broadband sound eliminating. The expansive type silencer comprises an expansion pipe. Connecting nozzles are arranged at the two ends of the expansion pipe. The area of the sections of the connecting nozzles is smaller than the area of the section of the expansion pipe. The expansion pipe comprises a fixed pipe section and a telescopic pipe section. The end, close to the fixed pipe section, of the telescopic pipe section is matched and connected with the fixed pipe section in a sleeving manner and can slide in the length direction of the fixed pipe section to adjust the length of the expansion pipe. The expansive type silencer is used for the fresh air system.

Description

technical field [0001] The invention relates to the technical field of indoor ventilation and exhaust equipment, in particular to an expansion muffler and a fresh air system. Background technique [0002] The fresh air system is an independent air treatment system composed of a ventilation fan capable of exchanging and purifying the air, pipes and some accessories. The ventilation fan filters and purifies the outdoor fresh air and transports it to the room through the pipeline, and at the same time removes the indoor dirty air. The air is exhausted outside. Ventilation fans may generate pressure pulses and related noises during the process of converging indoor dirty air and discharging fresh air into the room. The pressure pulses and related noises can be transmitted to the room through pipes and affect the indoor environment. [0003] In order to avoid the above problems, in the prior art, an expansion muffler is usually connected in series in the pipeline connecting the v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F13/24
CPCF24F13/24F24F2013/247
Inventor 郝玉密徐超
Owner HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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