CN116717905A - Adjustable muffler and air conditioner - Google Patents

Abstract

The embodiment of the application provides an adjustable muffler and an air conditioner, wherein the adjustable muffler comprises: the silencing cylinder is provided with a refrigerant exchange end; at least one sound-deadening inner shell provided with a through hole; the silencing inner shell is connected to the inner wall of the silencing barrel in a telescopic manner, the inner cavity of the silencing barrel is divided into at least one resonant cavity and one outer cavity flow channel, and the outer cavity flow channel is communicated with the refrigerant exchange end; the volume of the resonant cavity is changed along with the expansion and contraction of the silencing inner shell so as to change the silencing frequency.

Description

Adjustable muffler and air conditioner

Technical Field

The application relates to the technical field of air conditioners, in particular to an adjustable silencer and an air conditioner.

Background

During the operation of the air conditioner, the compressor generates pressure pulsation of the refrigerant; the pressure pulsation of the refrigerant can be transmitted to the indoor side through the pipeline, so that transmission noise is generated, and noise interference is caused to the indoor environment. For this reason, the industry has often chosen to connect a muffler in series with the pipe to attenuate the transmitted noise. In the related art, a single muffler has a fixed muffling characteristic and can cope with only a single frequency of transmitted noise; accordingly, a plurality of silencers are required to be connected in series on a pipeline, and the silencers with different silencing frequencies are used for coping with the transmitted noise with different frequencies, so that the quantity of the silencers is high, and the cost of devices is high.

Disclosure of Invention

The embodiment of the application provides an adjustable silencer and an air conditioner, which have the silencing effect on the noise transmitted in a wider frequency band, and can reduce the consumption of the silencer and save the material cost.

In one aspect, embodiments of the present application provide an adjustable muffler comprising: the silencing cylinder is provided with a refrigerant exchange end; at least one sound-deadening inner shell provided with a through hole; the silencing inner shell is connected to the inner wall of the silencing barrel in a telescopic manner, the inner cavity of the silencing barrel is divided into at least one resonant cavity and one outer cavity flow channel, and the outer cavity flow channel is communicated with the refrigerant exchange end; the volume of the resonant cavity is changed along with the expansion and contraction of the silencing inner shell so as to change the silencing frequency.

In some embodiments, the adjustable muffler includes a plurality of silencing inner shells and at least one telescopic connecting member, the plurality of silencing inner shells are arranged in pairs, two silencing inner shells arranged in pairs are connected by one telescopic connecting member, and the telescopic connecting member telescopically enables the silencing inner shells connected with the telescopic connecting member to be close to or far away from the inner wall of the silencing cylinder body facing the opening side of the silencing inner shells.

In some embodiments, when the adjustable muffler includes a plurality of silencing inner shells, natural frequencies of resonant cavities defined by at least two silencing inner shells and the silencing cylinder are different; and/or the natural frequencies of the resonance cavities formed by the enclosing of the at least two silencing inner shells and the silencing cylinder body are the same.

In some embodiments, the adjustable muffler includes at least one clip structure, the at least one clip structure and the at least one sound attenuating inner shell being equal in number and disposed in a one-to-one correspondence; the clamp structure set up in on the inner wall of amortization barrel, and be equipped with the spout portion, on the amortization inner shell with the clamp structure corresponds the lateral wall that sets up telescopically keep in the spout portion.

In some embodiments, the silencing inner shell includes a bottom wall and a plurality of side walls surrounding the bottom wall and sequentially arranged, at least one of the bottom wall and the plurality of side walls is provided with a plurality of through holes, one end of the plurality of side walls away from the bottom wall encloses to form the opening side, and at least two side walls are respectively embedded and arranged in the chute portion of the clamp structure.

In some embodiments, the clamp structure includes a plurality of clamp pieces, a plurality of clamp pieces with a plurality of lateral walls quantity equals and the one-to-one sets up, the clamp piece set up in on the inner wall of amortization barrel, and be equipped with the spout portion, a plurality of lateral walls one-to-one imbeds set up in the spout portion of a plurality of clamp pieces, a plurality of clamps end to end in proper order and annular enclose.

In some embodiments, the side wall of the silencing inner shell, which is correspondingly arranged with the clamp structure, is provided with a plurality of through holes, and the silencing inner shell is telescopically close to or far away from the inner wall of the silencing cylinder body, which faces the opening side of the silencing inner shell, so as to change the number of the through holes blocked by the clamp structure.

In some embodiments, the refrigerant input end and the refrigerant output end are respectively disposed at opposite ends of the silencing cylinder along a first direction, and the expansion and contraction direction of the silencing inner shell is perpendicular to or inclined at an angle to the first direction.

In some embodiments, the silencing barrel comprises an equal-diameter section and two reducing sections, the two reducing sections are respectively arranged at two opposite ends of the equal-diameter section, the through-flow cross-sectional area of each reducing section increases progressively along the direction approaching to the equal-diameter section, and one end, far away from the equal-diameter section, of each reducing section is provided with the refrigerant exchange end.

On the other hand, the embodiment of the application provides an air conditioner, which comprises a refrigerant pipeline and the adjustable muffler in any embodiment, wherein the adjustable muffler is connected in series on the refrigerant pipeline.

In some embodiments, the air conditioner further comprises a frequency collector configured to detect a frequency of the transmitted noise of the refrigerant pipe, and the silencing inner shell is configured to telescopically change the volume of the resonant cavity according to a detection value of the frequency collector.

According to the embodiment of the application, the silencing cylinder body and the silencing inner shell are arranged, the adjustable silencer is connected in series in the refrigerant pipeline, when the refrigerant pressure pulsation generates transmission noise in the refrigerant pipeline, on one hand, the through flow cross section area of the refrigerant when entering the inner cavity of the silencing cylinder body from the refrigerant pipeline is expanded, the expansion effect can be utilized to enable sound waves to be reflected and interfered to perform silencing, and on the other hand, the resonance cavity can be utilized to better eliminate the transmission noise which enters the resonance cavity and has the same natural frequency as the resonance cavity; when the compressor carries out frequency conversion to change the pressure pulsation frequency of the refrigerant and the frequency of the transmission noise, the silencing inner shell can be controlled to telescopically change the volume of the corresponding resonant cavity, and the natural frequency of the resonant cavity is correspondingly adjusted to be consistent with the frequency of the transmission noise after the change, so that the adjustable silencer can be well matched with the transmission noise after the change, and compared with the related technology, the adjustable silencer has the silencing effect on the transmission noise of a wider frequency band, can eliminate the transmission noise of different frequency bands, does not need to be provided with more silencers on the air conditioner, and can reduce the consumption quantity of the silencers and save the material cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a connection block diagram of an adjustable muffler provided in some embodiments of the present application;

FIG. 2 is an exploded block diagram of an adjustable muffler provided in some embodiments of the present application;

FIG. 3 is a cross-sectional block diagram of an adjustable muffler provided in some embodiments of the present application;

fig. 4 is a layout view of an adjustable muffler according to some embodiments of the present application.

Description of main reference numerals:

1-adjustable muffler, 10-silencing cylinder, 111-chamber outer runner, 12-refrigerant input end, 13-refrigerant output end, 101-constant diameter section, 102-reducing section, 20-silencing inner shell, 21-opening side, 22-through hole, 201-bottom wall, 202-side wall, 30-resonant cavity, 40-telescopic connecting piece, 50-clamp structure, 51-clamp piece, 511-chute portion and 2-refrigerant pipeline.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

"A and/or B" includes the following three combinations: only a, only B, and combinations of a and B.

The use of "adapted" or "configured" in this disclosure is meant to be an open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps. In addition, the use of "based on" is intended to be open and inclusive in that a process, step, calculation, or other action "based on" one or more of the stated conditions or values may be based on additional conditions or beyond the stated values in practice.

In the present application, the term "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described as "exemplary" in this disclosure is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, details are set forth for purposes of explanation. It will be apparent to one of ordinary skill in the art that the present application may be practiced without these specific details. In other instances, well-known structures and processes have not been described in detail so as not to obscure the description of the application with unnecessary detail. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

During the operation of the air conditioner, the compressor generates pressure pulsation of the refrigerant; the pressure pulsation of the refrigerant can be transmitted to the indoor side through the pipeline, so that transmission noise is generated, and noise interference is caused to the indoor environment. For variable frequency air conditioner products, the operating frequency of the compressor is dynamically changed; as the operating frequency of the compressor changes, the pressure pulsation of the refrigerant and the frequency of the transmission noise caused by the pressure pulsation of the refrigerant also dynamically change, so that the transmission noise dynamically changes in a wider frequency range. In the related art, a plurality of silencers are adopted to connect in series on a pipeline, and the silencers with different silencing frequencies correspondingly eliminate the transmission noise with different frequencies, so that a wider frequency range of the transmission noise is matched and covered; accordingly, a larger number of silencers is required, resulting in higher device costs.

As shown in fig. 1 to 4, in one aspect, the embodiment of the present application provides an adjustable muffler 1, where the adjustable muffler 1 includes a muffler cylinder 10 and at least one muffler inner shell 20, and has a muffler effect for transmitting noise over a wide frequency band, so that the consumption of the muffler can be reduced, and the material cost can be saved.

The silencing cylinder 10 is provided with a refrigerant exchange end, namely a refrigerant input end 12 and a refrigerant output end 13, and an inner cavity for connecting the refrigerant input end 12 and the refrigerant output end 13 is formed in the silencing cylinder 10. The silencing cylinder 10 can be connected in series with the refrigerant pipeline 2, and is connected with the refrigerant pipeline 2 through a refrigerant input end 12 and a refrigerant output end 13 respectively. In this way, the refrigerant in the refrigerant pipeline 2 can enter the inner cavity of the silencing cylinder 10 through the refrigerant input end 12, and after passing through the inner cavity, the refrigerant returns to the refrigerant pipeline 2 through the refrigerant output end 13.

The silencing inner shell 20 is disposed in the silencing barrel 10 and is telescopically connected to the inner wall of the silencing barrel 10, and separates the inner cavity of the silencing barrel 10 to form at least one resonant cavity 30 and one outer cavity flow channel 111. The outer cavity flow channel 111 is communicated with a refrigerant exchange end, for example, is respectively and directly communicated with a refrigerant input end 12 and a refrigerant output end 13; for example, the refrigerant input end 12 and the refrigerant output end 13 may be respectively disposed on the inner wall of one side of the silencing cylinder 10 for enclosing to form the outer chamber channel 111.

The silencing inner shell 20 is provided with a plurality of through holes 22, the plurality of through holes 22 are communicated with the resonant cavity 30 and the outer cavity flow channel 111, and the refrigerant exchange end is communicated with the through holes 22 through the outer cavity flow channel 111 and the through holes 22, and then is communicated with the resonant cavity 30 through the through holes 22. The sound-deadening inner shell 20 telescopically changes the volume of the resonance chamber 30 to change the sound-deadening frequency.

After the refrigerant enters the inner cavity of the silencing cylinder 10, the refrigerant firstly enters the outer cavity flow channel 111, part of the refrigerant can flow through the resonance cavity 30 through the through hole 22 on the side wall of the silencing inner shell 20 and then returns to the refrigerant pipeline 2 through the refrigerant output end 13, and the other part of the refrigerant can directly flow through the outer cavity flow channel 111 and then returns to the refrigerant pipeline 2 through the refrigerant output end 13. For the transmission noise entering the resonance cavity 30, when the frequency of the transmission noise is the same as the natural frequency of the resonance cavity 30, a resonance effect occurs in the resonance cavity 30, so that the friction loss and acoustic energy loss of the transmission noise in each through hole 22 are maximized, and the transmission noise is preferably eliminated.

When the adjustable muffler 1 provided by the embodiment of the application is connected in series in the refrigerant pipeline 2 and the refrigerant pressure pulsation generates transmission noise in the refrigerant pipeline 2, on one hand, the flow cross-section area of the refrigerant is expanded when the refrigerant enters the inner cavity of the silencing cylinder 10 from the refrigerant pipeline 2, sound waves can be reflected and interfered by utilizing the expansion effect to perform silencing, and on the other hand, the resonance cavity 30 can be utilized to better eliminate the transmission noise which enters the resonance cavity 30 and has the same natural frequency as the resonance cavity 30; when the compressor changes the frequency of the refrigerant pressure pulsation and the transmission noise frequency, the silencing inner shell 20 can be controlled to change the volume of the corresponding resonant cavity 30 in a telescopic manner, and accordingly the natural frequency of the resonant cavity 30 is adjusted to be consistent with the frequency of the transmission noise after the change, so that the adjustable silencer 1 can be well matched with the transmission noise after the change, and compared with the related art, the adjustable silencer 1 has the silencing effect on the transmission noise of a wider frequency band, can eliminate the transmission noise of different frequency bands, does not need to be provided with a plurality of silencers on the air conditioner, and can reduce the consumption number of the silencers and save the material cost.

The telescopic movement of the sound-deadening inner shell 20 may be implemented in different driving modes, and may be implemented in different types such as electric push rod driving, telescopic cylinder driving, motor driving, etc., which is not limited in the embodiment of the present application. The number of the silencing inner shells 20 can be determined according to actual needs, and can be one or more, so that one or more resonant cavities 30 are formed in the inner cavity of the silencing barrel 10 correspondingly, and the embodiment of the application is not limited to this.

In some embodiments, when the adjustable muffler 1 includes a plurality of silencing inner shells 20, the natural frequencies of the resonant cavities 30 enclosed by the at least two silencing inner shells 20 and the silencing cylinder 10 may be different, so that at least two resonant cavities 30 with different natural frequencies exist in the adjustable muffler 1 at the same time, so that the adjustable muffler 1 can match and eliminate the transmission noise of two frequency bands at the same time, thereby widening the silencing frequency band of the adjustable muffler 1. In other embodiments, when the adjustable muffler 1 includes a plurality of inner silencing shells 20, the natural frequencies of the resonant cavities 30 enclosed by at least two inner silencing shells 20 and the silencing cylinder 10 may be the same, so that at least two resonant cavities 30 with the same natural frequency exist in the adjustable muffler 1 at the same time, and the above-mentioned resonant cavities 30 with the same natural frequency may be used to eliminate the transmitted noise in the corresponding frequency band, and form a superposition effect to enhance the silencing effect on the transmitted noise in the specific frequency band, such as stronger noise. In still other embodiments, when the adjustable muffler 1 includes a plurality of sound-deadening inner shells 20, the natural frequencies of the resonance cavities 30 enclosed by at least two sound-deadening inner shells 20 and sound-deadening cylinder bodies 10 may be different, and the natural frequencies of the resonance cavities 30 enclosed by at least two sound-deadening inner shells 20 and sound-deadening cylinder bodies 10 may be the same.

In some embodiments, the adjustable muffler 1 may include a plurality of sound attenuating inner shells 20 and at least one telescopic connection 40. The plurality of silencing inner shells 20 are arranged in pairs, two silencing inner shells 20 arranged in pairs are connected through a telescopic connecting piece 40, and the telescopic connecting piece 40 can enable the connected silencing inner shells 20 to be close to or far away from the inner wall of the silencing barrel 10, for example, the inner wall of one side of the silencing barrel 10 used for enclosing to form the resonant cavity 30, so that the volume of the resonant cavity 30 corresponding to the silencing inner shells 20 and the silencing characteristics such as natural frequency and the like are changed. In this way, the telescopic connecting piece 40 can be used for synchronously driving and adjusting the two silencing inner shells 20 arranged in pairs, so that the driving and adjusting efficiency and the degree of cooperation of the two resonant cavities 30 corresponding to the two silencing inner shells 20 arranged in pairs during adjustment are improved. The type of the telescopic connection 40 may be determined according to actual needs, and for example, an electric telescopic rod, a telescopic cylinder, etc. may be used, which is not limited in the embodiment of the present application.

In some embodiments, the adjustable muffler 1 may include at least one clip structure 50, with the at least one clip structure 50 and the at least one sound attenuating inner shell 20 being equal in number and disposed in a one-to-one correspondence. The number of the clip structures 50 may be determined according to actual needs, and may be one or more, which is not limited in the embodiment of the present application. The clip structure 50 is disposed on an inner wall of the silencing barrel 10, for example, on an inner wall of a side of the silencing barrel 10 for enclosing the resonant cavity 30, and the clip structure 50 is provided with a chute 511; the side walls 202 of the inner silencer casing 20, which are disposed in correspondence with the clip structures 50, are slidably held in the slide groove portions 511, so that the inner silencer casing 20 can be slidably moved along the slide groove portions 511 toward or away from the inner wall of the silencer casing 10, for example, the inner wall of the silencer casing 10 on one side for enclosing the resonant cavity 30, to change the volume of the resonant cavity 30. The number of the sliding groove portions 511 provided on the clip structure 50 may be one or more according to actual needs, which is not limited in the embodiment of the present application.

The structure of the sound-deadening inner shell 20 may be determined according to actual needs, and the embodiment of the application is not limited thereto. In some embodiments, the sound-deadening inner shell 20 may include a bottom wall 201 and a plurality of side walls 202 disposed in sequence around the bottom wall 201, and a plurality of through holes 22 are provided on at least one of the bottom wall 201 and the plurality of side walls 202. In some examples, a plurality of through holes 22 may be provided on the bottom wall 201 and any one of the side walls 202, respectively; in other examples, a plurality of through holes 22 may be provided only on the bottom wall 201, and no through holes 22 may be provided on any one of the side walls 202; in still other examples, the through holes 22 may not be provided on both the bottom wall 201 and the number of side walls 202, and the plurality of through holes 22 may be provided only on the remaining number of side walls 202; in still other examples, the through holes 22 may not be provided only on the bottom wall 201, but a plurality of through holes 22 may be provided respectively on any one of the side walls 202.

Here, the sound-deadening inner shell 20 may have an opening side 21, and one end of the plurality of side walls 202 away from the bottom wall 201 is enclosed to form the opening side 21, wherein at least two side walls 202 are respectively embedded in the sliding groove portion 511 of the clip structure 50, for example, one end of the side walls 202 away from the bottom wall 201 may be embedded in the sliding groove portion 511 of the clip structure 50. In some examples, only two of the side walls 202 may be respectively embedded in the slide groove portion 511 of the clip structure 50, while the remaining side walls 202 are not embedded in the slide groove portion 511 of the clip structure 50; in other examples, any one of the side walls 202 may be embedded within the slot portion 511 of the clip structure 50. The inner wall of the silencing cylinder 10 on the side for enclosing the resonant cavity 30 may be the inner wall of the silencing cylinder 10 on the side facing the opening side 21.

The configuration of the clip structure 50 may be determined as desired, and may be a single member having a bent or annular configuration, or may be an assembly comprising a plurality of sub-members. In some examples, the band structure 50 may include a plurality of band members 51, the plurality of band members 51 and the plurality of sidewalls 202 of the sound attenuating inner shell 20 being equal in number and disposed in a one-to-one correspondence; each clip member 51 is disposed on the inner wall of the silencing barrel 10, and has a sliding groove 511, and the side walls 202 are embedded in the sliding groove 511 of the clip members 51 in a one-to-one correspondence. For example, the sound attenuating inner case 20 may have four sidewalls 202, and the band structure 50 may include four band members 51 such that the four sidewalls 202 are respectively inserted into the sliding groove portions 511 of the four band members 51 in a one-to-one correspondence.

Illustratively, the plurality of clips may be sequentially connected end to end and annularly enclosed, so that the area between the inner walls of the silencing inner shell 20 and the silencing cylinder 10 facing the opening side 21 of the silencing inner shell 20 is enclosed by the plurality of clips, thereby increasing the resonance effect and the silencing effect of the resonance cavity 30.

In some examples, the side wall 202 of the inner silencer casing 20 and the clip structure 50 may be provided with a plurality of through holes 22, and the inner silencer casing 20 may be telescopically close to or far from the inner wall of the silencer casing 10 facing the opening side 21 of the inner silencer casing 20, so as to change the number of through holes 22 covered by the clip structure 50. Therefore, the telescopic movement of the silencing inner shell 20 can be utilized to change the number of the through holes 22 for carrying out refrigerant through flow on the resonant cavity 30 on the silencing inner shell 20, and then the natural frequency and the through flow cross section area of the resonant cavity 30 corresponding to the silencing inner shell 20 are changed, so that the silencing frequency band of the adjustable silencer 1 is adjusted to a required frequency band, the silencing frequency band of the adjustable silencer 1 is widened, the transmission noise of different frequency bands can be eliminated, and the effects of reducing the consumption number of the silencer and saving the material cost are realized.

The positions of the refrigerant input end 12 and the refrigerant output end 13 on the silencing barrel 10 can be determined according to actual needs, which is not limited in the embodiment of the present application. In some embodiments, the refrigerant input end 12 and the refrigerant output end 13 may be disposed at opposite ends of the silencing cylinder 10 along the first direction, respectively, and the telescopic direction and the first direction of the silencing inner shell 20 are perpendicular or inclined at an angle. In this way, the resonant cavity 30 can be reasonably arranged on the flow path of the refrigerant, and a better silencing effect is achieved.

The apertures of the refrigerant input end 12 and the refrigerant output end 13 can be determined according to actual needs, which is not limited in the embodiment of the present application. In some embodiments, the aperture of the refrigerant input 12 may be larger than the aperture of the refrigerant output 13.

The shape and configuration of the sound deadening cylinder 10 may be determined according to actual needs, and the embodiment of the present application is not limited thereto. In some embodiments, the sound attenuating cylinder 10 may include an equal diameter section 101 and two variable diameter sections 102; two reducing segments 102 are disposed at opposite ends of the constant diameter segment 101, respectively, and the through-flow cross-sectional area of each reducing segment 102 increases in a direction approaching the constant diameter segment 101. One end of one variable diameter section 102, which is far away from the equal diameter section 101, is provided with a refrigerant input end 12, and the other variable diameter section 102, which is far away from the equal diameter section 101, is provided with a refrigerant output end 13. Thus, when the refrigerant enters the inner cavity of the silencing cylinder 10 from the refrigerant pipeline 2, the refrigerant passes through one of the reducing sections 102 at first, so that the through-flow cross-sectional area of the refrigerant expands along with the increasing structure of the reducing section 102, sound waves can be reflected and interfered to be silenced by utilizing the expansion effect, and the silencing effect of the adjustable silencer 1 is improved. In some examples, the sound attenuating inner shell 20 may be disposed within the constant diameter section 101.

On the other hand, the embodiment of the application provides an air conditioner, which comprises a refrigerant pipeline 2 and the adjustable muffler 1 provided by any embodiment, wherein the adjustable muffler is connected in series on the refrigerant pipeline 2. Here, the refrigerant pipe 2 serves as a refrigerant circulation connection pipe, and allows the refrigerant to circulate in the refrigerant circulation circuit. The type of the air conditioner may be determined according to actual needs, and for example, a wall-mounted air conditioner, a cabinet air conditioner, etc. may be used, which is not limited in the embodiment of the present application.

In some embodiments, the air conditioner may further include a frequency collector configured to detect a frequency of the transmitted noise in the refrigerant pipe 2, and the silencing inner case 20 is configured to telescopically change the volume of the resonance cavity 30 according to a detection value of the frequency collector. Therefore, the silencing inner shell 20 can be controlled to stretch and retract in real time based on the real-time detection result of the frequency collector, so that the silencing frequency band of the adjustable silencer 1 can be dynamically adjusted, and a better matching silencing effect is achieved.

The above describes the adjustable muffler and the air conditioner provided by the embodiments of the present application in detail, and specific examples are applied to illustrate the principles and embodiments of the present application, and the above examples are only used to help understand the method and the core idea of the present application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, the present description should not be construed as limiting the present application.

Claims (11)

1. An adjustable muffler, comprising:

the silencing cylinder is provided with a refrigerant exchange end;

at least one sound-deadening inner shell provided with a through hole;

the silencing inner shell is connected to the inner wall of the silencing barrel in a telescopic manner, the inner cavity of the silencing barrel is divided into at least one resonant cavity and one outer cavity flow channel, and the outer cavity flow channel is communicated with the refrigerant exchange end;

the volume of the resonant cavity is changed along with the expansion and contraction of the silencing inner shell so as to change the silencing frequency.

2. The adjustable muffler according to claim 1, wherein the adjustable muffler includes a plurality of silencing inner shells and at least one telescopic connecting member, the plurality of silencing inner shells are arranged in pairs, two silencing inner shells arranged in pairs are connected by one telescopic connecting member, and the telescopic connecting member telescopically brings the silencing inner shells connected thereto close to or far from the inner wall of the silencing cylinder body to change the volume of the resonant cavity.

3. The adjustable muffler according to claim 1, wherein when the adjustable muffler includes a plurality of silencing inner shells, natural frequencies of resonance cavities defined by at least two silencing inner shells and the silencing cylinder are different; and/or the natural frequencies of the resonance cavities formed by the enclosing of the at least two silencing inner shells and the silencing cylinder body are the same.

4. The adjustable muffler according to claim 1, wherein the adjustable muffler includes at least one clip structure, the at least one clip structure and the at least one sound attenuating inner shell being equal in number and disposed in a one-to-one correspondence; the clamp structure set up in on the inner wall of amortization barrel, and be equipped with the spout portion, on the amortization inner shell with the clamp structure corresponds the lateral wall that sets up telescopically keep in the spout portion.

5. The adjustable muffler according to claim 4, wherein the sound attenuating inner shell has an open side and includes a bottom wall and a plurality of side walls disposed in sequence around the bottom wall, at least one of the bottom wall and the plurality of side walls being provided with a plurality of through holes, one end of the plurality of side walls remote from the bottom wall enclosing to form the open side, wherein at least two side walls are respectively embedded in a chute portion of the clip structure.

6. The adjustable muffler according to claim 4, wherein the clip structure includes a plurality of clip members, the plurality of clip members and the plurality of side walls are equal in number and are arranged in one-to-one correspondence, the clip members are arranged on the inner wall of the muffler cylinder body and are provided with the chute portions, the plurality of side walls are embedded in the chute portions of the plurality of clip members in one-to-one correspondence, and the plurality of clips are sequentially connected end to end and are annularly enclosed.

7. The adjustable muffler according to claim 4, wherein a plurality of through holes are provided in a side wall of the inner muffler shell which is provided in correspondence with the clip structure, and the inner muffler shell is telescopically moved toward or away from an inner wall of the muffler shell toward an opening side of the inner muffler shell to change the number of the through holes blocked by the clip structure.

8. The adjustable muffler of claim 1, wherein the refrigerant exchanging end is a refrigerant input end and a refrigerant output end, the refrigerant input end and the refrigerant output end are respectively disposed at opposite ends of the silencing cylinder along a first direction, and the expansion and contraction direction of the silencing inner shell is perpendicular to or inclined at an angle to the first direction.

9. The adjustable muffler according to claim 1, wherein the muffler shell comprises an equal diameter section and two reducing sections, the two reducing sections are respectively disposed at opposite ends of the equal diameter section, the through-flow cross-sectional area of the reducing sections increases progressively in a direction approaching the equal diameter section, and one end of each reducing section, which is far from the equal diameter section, is provided with the refrigerant exchange end.

10. An air conditioner comprising a refrigerant line and the adjustable muffler of any one of claims 1 to 9, the adjustable muffler being connected in series with the refrigerant line.

11. The air conditioner of claim 10, further comprising a frequency collector configured to detect a frequency of the transmitted noise of the refrigerant line, the sound-deadening inner casing being configured to telescopically vary a volume of the resonance cavity according to a detection value of the frequency collector.