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Noise reducing filter and air conditioner

A filter and silencing technology, applied in space heating and ventilation details, household heating, lighting and heating equipment, etc., can solve the problems of refrigerant blocking and reducing the amount of refrigerant circulation, so as to reduce fluid flow sound and reduce fluid pulsation. , the effect of reducing system noise

Inactive Publication Date: 2015-11-04
QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the mesh layer will block the refrigerant, it will reduce the amount of refrigerant circulation

Method used

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  • Noise reducing filter and air conditioner
  • Noise reducing filter and air conditioner
  • Noise reducing filter and air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] like figure 2 As shown, the embodiment of the present invention provides a sound attenuation filter, comprising: a pipe body 21 and a filter mesh 22 located in the pipe body 21 .

[0029] Wherein, the shape of the pipe body 21 can refer to figure 2 , the middle part is a hollow cylinder, and the two ends have shrinking interfaces respectively, so that the cross section through which the fluid flows first expands and then shrinks, thereby causing the reflection of sound waves and the loss of transmission, that is, the principle of the expansion chamber muffler is adopted , can make the pipe body play a role in reducing noise to a certain extent. Of course, the tube body 21 can also be designed in other shapes, as long as it is hollow.

[0030] The shape of filter screen 22 can refer to figure 2 , whose outer shape is a frustum of a cone with an opening at one end. Exemplarily, one end (ie, the left end in the figure) with a larger radius of the two frustums has an...

Embodiment 2

[0040] This embodiment provides a preferred sound-absorbing filter, and its pipe body and filter net can refer to Embodiment 1, and details are not repeated here. This embodiment only introduces further limitations in detail. Wherein, the helical sound damping device in this embodiment takes a spring as an example, since the spring in this embodiment is helical, this kind of spring is hereinafter referred to as a coil spring.

[0041] The noise reduction filter can be applied to air conditioners, and the refrigerant flows in one direction during the cooling process of the air conditioner, and the refrigerant flows in the opposite direction during the heating process. like image 3 As shown, when the refrigerant flows in reverse from right to left, it is easy to cause deformation of the filter screen. In order to solve this problem, one end 231 of the helical spring 23 in the embodiment of the present invention is fixed in the filter 22 , and the other end 232 abuts against t...

Embodiment 3

[0051] The existing air conditioner can be a small household air conditioner, that is, one for one; it can also be a multi-connected air conditioner system, that is, one for many. One-to-one refers to an air-conditioning system in which one outdoor unit is connected to one indoor unit through piping; one-to-multiple refers to an air-conditioning system in which one outdoor unit is connected to two or more (that is, at least two) indoor units through piping.

[0052] No matter for small domestic air conditioners or multi-connected air conditioner systems, the above-mentioned noise reduction filter can be included. Based on this, if Figure 4 , Figure 5 As shown, the embodiment of the present invention provides an air conditioner, including: an outdoor unit 31 and an indoor unit 32 . Among them, the outdoor unit 31 generally includes: a condenser 311, a compressor 312; of course, in order to ensure the reliability of the air conditioning system, the outdoor unit 31 can furthe...

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Abstract

The invention discloses a noise reducing filter and an air conditioner and relates to the technical field of air conditioning system pipeline filtering and noise reducing. The filter can achieve a noise reducing function, and the circulation amount of fluid in the filter cannot be reduced. The noise reducing filter comprises a pipe and a filter screen located in the pipe. A spiral noise reducing device is arranged in the filter screen, and the length direction of the spiral noise reducing device is consistent with the main flowing direction of the fluid in the pipe. The noise reducing filter can be applied to air conditioning systems.

Description

technical field [0001] The invention relates to the technical field of air conditioning system pipeline filtering and noise reduction, in particular to a noise reduction filter and an air conditioner. Background technique [0002] With the increasing awareness of environmental protection, the requirements for the noise level of air conditioners are also getting higher and higher. There are many factors that affect the noise level of the air conditioner. Among them, the main noise source other than wind noise and mechanical vibration noise (such as the start-up noise of the air conditioner compressor) is the refrigerant flow sound caused by the pressure pulsation inside the air conditioner. Specifically: the pipes inside the air conditioner There is an electronic expansion valve in the road. The working principle of the electronic expansion valve is to narrow the cross-section of the refrigerant flowing through through the movement of the valve needle to achieve the purpose o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F13/24F24F13/28
Inventor 梁爱云朱小磊王善云
Owner QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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