CN213578232U - Filtering muffler and air conditioner - Google Patents

Abstract

The utility model relates to an air conditioner technical field discloses a filter muffler and air conditioner, this filter muffler, include: the device comprises a shell, a plurality of first through holes and a plurality of second through holes, wherein necking connecting ports are formed at two ends of the shell, the shell also comprises an inner pipeline with one end arranged in a closed mode, and the side wall of the inner pipeline is provided with a plurality of first through holes; a first annular disc sleeved at the open end of the inner pipeline is arranged in the shell; a filter screen is mounted at the open end close to the inner pipeline. The embodiment of the utility model provides a filter muffler is through setting up suitable cross sectional area ratio and expansion chamber length to combine the filter screen to use, thereby effectively eliminate the low frequency noise in the air current, in order to realize filtering the purpose of making an uproar that falls.

Description

Filtering muffler and air conditioner

Technical Field

The utility model relates to an air conditioner technical field especially relates to a filter muffler and air conditioner.

Background

Along with more and more frequent use of air conditioners in working and living, complaints of people on noise of the air conditioners are more and more, and particularly, complaints of users on noise generated by indoor units are particularly concentrated in a refrigerating season. The noise generated by the indoor unit is partly caused by the flowing sound of the refrigerant when the refrigerant flows in the refrigerant channel. At present, regarding the mechanism of the generation of the refrigerant flowing sound, the industry generally considers that the generation of the refrigerant flowing sound has an important relation with the flow state of the refrigerant, and the reason is that the refrigerant flowing sound is easily generated when the refrigerant flows in a gas-liquid two-phase state.

In the related art, in order to reduce the noise of the air conditioner compressor, a noise reduction means is usually adopted to add a muffler in the air conditioner piping system, and in order to adapt to different compressor types and operation conditions, different mufflers may be used or the number of mufflers may be increased, thereby causing the problems of cost increase and material management.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a filter muffler and air conditioner for solve the current not good problem of filter muffler's noise cancelling effect.

In a first aspect, an embodiment of the present invention provides a filter muffler, including: the device comprises a shell, a plurality of first through holes and a plurality of second through holes, wherein necking connecting ports are formed at two ends of the shell, the shell also comprises an inner pipeline with one end arranged in a closed mode, and the side wall of the inner pipeline is provided with a plurality of first through holes; a first annular disc sleeved at the open end of the inner pipeline is arranged in the shell; a filter screen is mounted at the open end close to the inner pipeline.

On the basis of the technical scheme, the filter screen is fixed in the shell through the rolling groove on the inner wall of the shell.

On the basis of the technical scheme, a silencing piece in an annular columnar structure is installed at the closed end close to the inner pipeline.

On the basis of the technical scheme, the noise elimination piece is made of porous ceramic materials.

On the basis of the technical scheme, a second annular disc is installed at the closed end close to the inner pipeline, and a second through hole is formed in the second annular disc.

On the basis of the technical scheme, the sizes of the through holes which are sequentially arranged along the axial direction of the inner pipeline are sequentially reduced.

On the basis of the technical scheme, the through holes sequentially arranged along the circumferential direction of the inner pipeline have the same size.

On the basis of the technical scheme, the annular disc is installed inside the shell in a sliding mode.

On the basis of the technical scheme, the inner wall of the shell and/or the inner pipeline is/are provided with silencing cotton.

In a second aspect, an embodiment of the present invention provides an air conditioner, including the above technical solution the filter muffler.

The embodiment of the utility model provides a filter muffler and air conditioner, the air current that gets into the inside of casing through the import of casing gets into the inside of interior pipeline through first through-hole, and the air current can change the direction of motion of air current after touching the blind end of interior pipeline, and the air current that gets into the inside of interior pipeline flows out by the open end of interior pipeline; the air flow flowing out from the open end of the inner pipeline passes through the filter screen and then flows out from the outlet of the shell, so that the air flow enters a throttling device such as an expansion valve. The embodiment of the utility model provides a filter muffler is through setting up suitable cross sectional area ratio and expansion chamber length to combine the filter screen to use, thereby effectively eliminate the low frequency noise in the air current, in order to realize filtering the purpose of making an uproar that falls.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a filter muffler according to an embodiment of the present invention;

FIG. 2 is a schematic view of the working state of FIG. 1;

FIG. 3 is a schematic structural view of a second annular disc according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a first annular disc according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a filter screen according to an embodiment of the present invention.

Reference numerals:

1. a housing; 2. an inner conduit; 3. a first annular disc; 4. a first through hole; 5. a second annular disc; 6. a second through hole; 7. and (4) a filter screen.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

When the bubbles contained in the two-phase flow are too large, the flowing sound of the refrigerant is very obvious, and when the bubbles are smaller or have no bubbles, the flowing sound of the refrigerant is weakened or disappears.

The noise eliminator can be used in combination with a filter to form a filtering silencer with filtering and noise reducing functions, a filter screen in the filtering silencer filters impurities in the refrigerant, and the noise eliminator in the filtering silencer enables bubbles in the refrigerant to be broken and reduced and then enters a throttling device such as an expansion valve. Therefore, the silencing piece with a simple structure is arranged in the filter, the filtering and silencing effects are realized, the number of air conditioner parts is reduced, and the assembly efficiency of the whole machine can be effectively improved.

The technical solution of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is the utility model discloses a filter muffler's of embodiment structure schematic diagram, as shown in fig. 1, the utility model discloses filter muffler, include: the filtering silencer comprises a shell 1, wherein necking connecting ports are formed at two ends of the shell 1, and the filtering silencer also comprises an inner pipeline 2, one end of which is arranged in a closed mode; along the moving direction of the air flow, the top of the inner pipeline 2 is a closed end, and the bottom of the inner pipeline 2 is an open end; a plurality of first through holes 4 are formed in the side wall of the inner pipeline 2; a first annular disc 3 sleeved at the open end of the inner pipeline 2 is arranged in the shell 1, and the central axis of the inner pipeline 2 is coincided with the central axis of the shell 1. Wherein, the inner pipe 2 is fixed inside the shell 1 through the first annular disc 3, and the first through hole 4 can be a circular hole or an elliptical hole;

a filter screen 7 is mounted near the open end of the inner pipe 2, i.e. the filter screen 7 is mounted on the inner wall of the housing 1, near the open end of the inner pipe 2.

It should be noted that, the casing 1 may be a tubular structure, and two ends of the casing 1 are used for connecting a refrigeration pipeline of an air conditioner to allow a refrigerant to flow in the expansion chamber, and impedance changes are caused in a sound propagation process through abrupt changes of a pipeline section to generate reflection and interference of sound energy, so that the sound energy radiated outwards by the filter muffler is reduced, and a purpose of sound elimination is achieved.

It is understood that the sound-deadening performance of the filter muffler depends mainly on the expansion ratio and the expansion chamber length. The expansion ratio mainly depends on the section area ratio, and if the section area ratio of the filter muffler is adjustable, the effect of eliminating different low and medium frequency noises can be achieved.

For this purpose, the adjustment of the length of the expansion chamber can be achieved by varying the length of the inner conduit 2; the adjustment of the expansion ratio is achieved by the inner diameter setting of the inner pipe 2 and the size of the first through hole 4 provided in the inner pipe 2.

It should be noted that, as shown in fig. 4, in order to reduce the weight of the filter muffler, the first annular disc 3 may be made of a plastic material, and the inner diameter of the first annular disc 3 is adapted to the outer diameter of the inner pipe 2. The inner pipe 2 is detachably connected with a first annular disc 3, the first annular disc 3 is positioned in the middle of the inner pipe 2, and the first annular disc 3 is positioned at the bottom of the side surface of the inner pipe 2. Wherein, the housing 1 may be made of stainless steel, iron or copper material, and the first annular disc 3 is installed inside the housing 1 in a horizontal state.

As shown in fig. 5, the filter 7 is used to filter impurities in the refrigerant.

In the embodiment of the present invention, as shown in fig. 2, the air flow entering the interior of the housing 1 through the inlet of the housing 1 enters the interior of the inner pipe 2 through the first through hole 4, the air flow changes the moving direction of the air flow after contacting the closed end of the inner pipe 2, and the air flow entering the interior of the inner pipe 2 flows out from the open end of the inner pipe 2; the air flow flowing out from the open end of the inner pipe 2 passes through the filter 7 and then flows out through the outlet of the housing 1 to enter a throttle device such as an expansion valve. The embodiment of the utility model provides a filter muffler is through setting up suitable cross sectional area ratio and expansion chamber length to combine the filter screen to use, thereby effectively eliminate the low frequency noise in the air current, in order to realize filtering the purpose of making an uproar that falls.

In addition to the above embodiment, the filter 7 is fixed inside the housing 1 by a rolling groove on the inner wall of the housing 1.

It should be noted that, one end wall of the housing 1 is provided with a rolling groove recessed inside the housing 1. Wherein, the rolling groove can be recessed into the shell 1 along the ring direction of the shell 1.

It will be appreciated that the filter screen 7 is held in compression by two roller slots in the housing 1. The mode of fixing the filter screen 7 by using the rolling groove is simple and firm and is easy to process and assemble.

On the basis of the above-described embodiment, a muffler member in an annular columnar structure is mounted near the closed end of the inner pipe 2. The inner wall of the noise elimination piece is hung with a baffle which is horizontally arranged and has a disc-shaped structure, and the baffle is provided with a plurality of through holes which are arranged along the circumferential direction of the baffle.

It should be noted that the muffler may be mounted on the inner wall of the housing in a snap-fit manner, and close to the closed end of the inner pipe.

It will be appreciated that the muffler element is made of a porous ceramic material. Wherein the porous ceramic material comprises one of alumina ceramic powder, zirconia ceramic powder, titanium oxide ceramic powder and silicon carbide ceramic powder.

The embodiment of the utility model provides an in, be formed with the small hole of a large amount of inside and outside intercommunications on the noise elimination piece, when the sound wave incides in the noise elimination piece, will arouse the vibration of air in the hole, because the viscous drag of air, the friction and the heat conduction effect of air and pore wall, the sound energy is absorbed and is converted into heat energy, and then makes the sound wave play good noise cancelling effect at the rapid decay of noise elimination piece to simple process for the preparation, greatly reduced the cost of manufacture.

On the basis of the above embodiment, as shown in fig. 3, a second annular disc 5 is installed inside the housing 1 near the closed end of the inner pipe 2, and a second through hole 6 is opened on the second annular disc 5. Wherein the second annular disc 5 is mounted in the area between the muffler and the inner pipe 2.

It should be noted that, for example, to change the direction of movement of the air flow, a second annular disc 5 is mounted above the closed end of the inner duct 2. A plurality of second through holes 6 are opened in the second annular disk 5 along the circumferential direction of the second annular disk 5. In order to reduce the weight of the filter muffler, the second annular disc 5 may be made of a plastic material.

On the basis of the above embodiment, the plurality of second annular disks 5 are sequentially arranged along the axial direction of the inner pipe 2, and the distance between two adjacent second annular disks 5 is adjustable.

It should be noted that, in order to realize the movable mounting of the second annular disc 5, a plurality of first mounting holes may be sequentially and uniformly formed in the housing 1 along the axial direction of the housing 1, and in match with the first mounting holes, a second mounting hole may be formed in the second annular disc 5 along the radial direction of the second annular disc 5, and the second annular disc 5 and the housing 1 may be connected by sequentially passing through the first mounting hole and the second mounting hole via a pin.

It will be appreciated that the two second annular discs 5 are mounted inside the housing 1 for example in order to better adjust the direction of movement of the air flow. The distance between the center line of the second through hole 6 on the second annular disk 5 located above and the central axis of the second annular disk 5 is D1, and the distance between the center line of the second through hole 6 on the second annular disk 5 located below and the central axis of the second annular disk 5 is D2, when D1 is greater than D2. And D1 is greater than D2, so that the movement path of the airflow is increased, and the silencing effect is improved. Wherein, the second through hole 6 may be a circular hole or an elliptical hole.

The embodiment of the utility model provides an in, the size that is located second through-hole 6 on the second annular disk 5 of top is greater than the size that is located second through-hole 6 on the second annular disk 5 of below, and both self natural frequency is different, can eliminate the sound wave of different frequencies successively, guarantees that the air current flows the back, discharges quietly. Wherein the second through-holes 6 on the second annular disc 5 located above are arranged coaxially with the second through-holes 6 on the second annular disc 5 located below.

On the basis of the above-described embodiment, the sizes of the plurality of first through holes 4 arranged in order in the axial direction of the inner pipe 2 are reduced in order.

It is noted that the sizes of the plurality of first through holes 4 in the inner pipe 2 are sequentially reduced in the height direction of the inner pipe 2. Wherein, through setting up the first through-hole 4 of equidimension not in order to satisfy the amortization demand of the sound wave of different frequencies.

On the basis of the above-described embodiment, the plurality of first through holes 4 arranged in order in the circumferential direction of the inner pipe 2 are the same in size.

It should be noted that the plurality of first through holes 4 located at the same height on the inner pipe 2 have the same size.

On the basis of the above embodiment, the first annular disc 3 is slidably mounted inside the housing 1.

It should be noted that, in order to realize the movable mounting of the first annular disc 3, a plurality of first mounting holes may be sequentially and uniformly formed in the housing 1 along the axial direction of the housing 1, and in match with the first mounting holes, a second mounting hole may be formed in the first annular disc 3 along the radial direction of the first annular disc 3, and the first annular disc 3 and the housing 1 may be connected by sequentially passing through the first mounting hole and the second mounting hole via a pin.

On the basis of the above-described embodiment, sound-deadening cotton is mounted on the inner wall of the casing 1 and/or the inner pipe 2.

It should be noted that the high-frequency noise can be absorbed by the gaps on the silencing cotton, and after continuous emission and absorption, the noise in the air flow can be completely eliminated. Wherein, the inner pipeline 2 is a copper pipe or a copper-plated pipe.

As shown in fig. 2, the gas flow entering the interior of the housing 1 through the inlet of the housing 1 firstly enters the silencing piece, after preliminary silencing, the gas flow passes through the second annular disc 5, the second annular disc 5 has a preliminary flow splitting effect on the gas flow, the split gas flow enters the interior of the inner pipe 2 from the interior of the housing 1 through the first through hole 4, and the gas flow changes the moving direction of the gas flow after hitting the closed end of the inner pipe 2, and the gas flow entering the interior of the inner pipe 2 flows out from the open end of the inner pipe 2; the air flow flowing out from the open end of the inner pipe 2 passes through the filter 7 and then flows out through the outlet of the housing 1 to enter a throttle device such as an expansion valve. The embodiment of the utility model provides a filter muffler is through setting up suitable cross sectional area ratio and expansion chamber length to combine noise elimination piece and filter screen to use, thereby eliminate the low frequency noise in the air current more high-efficiently, with the purpose of realizing filtering and making an uproar.

The embodiment of the utility model provides a still provide an air conditioner, including the filtering muffler that each above-mentioned embodiment provided.

The embodiment of the utility model provides an in, this filter muffler of internally mounted at the air conditioner, through this filter muffler's noise cancelling effect, can improve the silence level of this air conditioner, and then improved the travelling comfort that the user used.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A filter muffler comprising: the device comprises a shell, wherein necking connecting ports are formed at two ends of the shell, and the device is characterized by also comprising an inner pipeline with one end being arranged in a closed manner, and a plurality of first through holes are formed in the side wall of the inner pipeline; a first annular disc sleeved at the open end of the inner pipeline is arranged in the shell; a filter screen is mounted at the open end close to the inner pipeline.

2. The filter muffler of claim 1, wherein the filter screen is secured to the interior of the housing by a roller slot on the inner wall of the housing.

3. The filter muffler according to claim 1 or 2, wherein a muffler member having an annular columnar structure is installed near the closed end of the inner pipe.

4. The filter muffler of claim 3, wherein the muffler member is made of a porous ceramic material.

5. The filter-muffler according to claim 1 or 2, wherein a second annular disc is installed near the closed end of the inner pipe, and a second through hole is opened in the second annular disc.

6. The filter-muffler according to claim 1 or 2, wherein a plurality of the through-holes arranged in order in the axial direction of the inner pipe are reduced in size in order.

7. The filter muffler according to claim 6, wherein a plurality of the through holes arranged in sequence in the circumferential direction of the inner pipe are the same in size.

8. The filter-muffler according to claim 1 or 2, wherein the annular disc is slidably mounted inside the housing.

9. The filter muffler according to claim 1 or 2, wherein a silencing cotton is mounted on an inner wall of the housing and/or the inner pipe.

10. An air conditioner characterized by comprising the filter muffler of any one of claims 1 to 9.

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