CN210637206U

CN210637206U - Exhaust silencer, compressor and electric appliance

Info

Publication number: CN210637206U
Application number: CN201920979539.4U
Authority: CN
Inventors: 刘一波; 张荣婷; 张金圈; 温振宇; 莫子扬; 谷欢欢; 文智明; 刘先忠
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-05-29
Anticipated expiration: 2029-06-26

Abstract

The utility model relates to an exhaust muffler, compressor and electrical apparatus, the muffler includes the muffler main part, be equipped with a plurality of cavities of mutual intercommunication in the muffler main part, the muffler main part is equipped with air inlet and gas outlet, the air inlet with the gas outlet respectively with same the cavity intercommunication. Through setting up a plurality of cavities, and one of them cavity and air inlet and gas outlet intercommunication, then regard as the main cavity with the cavity of air inlet and gas outlet intercommunication, and other cavity with the main cavity direct or indirect intercommunication then regard as resonance chamber, these resonance chambers can make its noise that can eliminate the specific frequency of various differences, the noise cancelling effect of muffler has been improved on the whole, the sound environment of the electrical apparatus of having avoided the compressor and having used the compressor in to people's life causes destruction, the travelling comfort of the electrical apparatus of compressor and use compressor has been improved, the range of application thereof has been enlarged, the popularization suitability thereof is improved.

Description

Exhaust silencer, compressor and electric appliance

Technical Field

The utility model relates to the technical field of household appliances, especially, relate to an exhaust muffler, compressor and electrical apparatus.

Background

With the continuous improvement of the quality of life, the requirements of people on the quality of life are higher and higher, and the rich functions of various electrical appliances contribute great strength to the improvement of the quality of life of people. The functions of cold storage, freezing, ice making and the like of the refrigerator help people to keep food fresh and can provide cold drinks. The compressor serves as an important part of the refrigerator to help it perform various functions. However, the compressor generates noise during operation, which is contrary to the comfort requirement of people, and thus the noise generated by the compressor needs to be removed. The existing compressor is internally provided with a silencer, but the silencing effect of the silencer is not obvious, and particularly, for certain noises with specific frequencies, the silencer is almost in a state of incapable of silencing, so that the noise environment in life of people is seriously damaged, the comfort of electrical appliances using the compressor is also seriously influenced, and the popularization and application range of the compressor is seriously influenced.

Accordingly, there is a need to provide an exhaust muffler, a compressor and an electric appliance to solve the disadvantages of the prior art.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides an exhaust muffler, compressor and electrical apparatus.

The utility model provides an exhaust muffler, includes the muffler main part, be equipped with a plurality of cavities of mutual intercommunication in the muffler main part, the muffler main part is equipped with air inlet and gas outlet, the air inlet with the gas outlet respectively with same the cavity intercommunication.

Furthermore, a first chamber, a communication channel and a second chamber which are communicated in sequence are arranged in the silencer main body, and the air inlet and the air outlet are communicated with the first chamber respectively.

Further, in either radial direction of the communication channel, the length of the communication channel is smaller than the length of the first chamber;

the length of the communication passage is smaller than the length of the second chamber in either radial direction of the communication passage.

Further, in any radial direction of the communication channel, the ratio of the length of the communication channel to the length of the first chamber is 1:5-1: 15;

the ratio of the length of the communication channel to the length of the second chamber in either radial direction of the communication channel is 1:5 to 1: 15.

Furthermore, the muffler main part includes the casing and locates in the casing and with the coaxial sleeve of casing, the air inlet with the gas outlet is located respectively on the casing, the casing with form first cavity between the sleeve, form the second cavity in the sleeve.

Further, the sleeve comprises a first sleeve and a second sleeve which are communicated with each other and are coaxial, and the inner diameter of the first sleeve is larger than that of the second sleeve;

the open end of the first sleeve is attached to the bottom of the shell, a second cavity is formed in the first sleeve, and a communication channel is formed in the second sleeve.

Further, the open end of the second sleeve is attached to the top surface of the shell, and the second sleeve is provided with a communicating opening.

Further, the second sleeve is provided with two opposite communication ports.

Further, the outer wall of the first sleeve is attached to the inner wall of the shell.

Further, the shell comprises a shell body and a cover plate, an opening coaxial with the shell body is formed in the top of the shell body, and the cover plate is connected with the shell body to seal the opening.

Further, a sealing ring is arranged between the shell body and the cover plate.

Furthermore, the bottom of the shell body is provided with a main fixing hole coaxial with the shell body, the cover plate is provided with an auxiliary fixing hole coaxial with the cover plate, and the cover plate is connected with the shell body through a fixing piece penetrating through the main fixing hole and the auxiliary fixing hole.

Further, the air inlet is arranged on the side wall of the shell body, and the air outlet is arranged on the cover plate.

Furthermore, the air outlet pipe is arranged, and extends towards the inside of the shell and out of the shell along the air outlet.

Based on the same invention thought, the utility model also provides a compressor, including the exhaust muffler.

Based on the same invention thought, the utility model also provides an electrical appliance, including the compressor.

The technical scheme of the utility model compare with closest prior art and have following advantage:

the utility model provides an exhaust muffler that technical scheme provided, through setting up a plurality of cavities, and one of them cavity with locate air inlet and gas outlet intercommunication in the muffler main part, then as the main cavity with the cavity of air inlet and gas outlet intercommunication, and other cavity that communicate with the main cavity is direct or indirect then as resonance chamber, through the number to these resonance chambers, size and with the design of the intercommunication mode of main cavity, can make its noise that can eliminate various different specific frequencies, the noise cancelling effect of muffler has been improved on the whole, the sound environment of having avoided the compressor and having used the electrical apparatus of compressor to people's life causes destruction, the travelling comfort of compressor and the electrical apparatus that uses the compressor has been improved, the range of application thereof is enlarged, the popularization suitability thereof is improved.

Drawings

FIG. 1 is a schematic view of an exhaust muffler provided by the present invention;

fig. 2 is a schematic structural diagram of an exhaust muffler provided by the present invention;

fig. 3 is an exploded view of the exhaust muffler provided by the present invention;

fig. 4 is a schematic structural view of the sleeve provided by the present invention;

fig. 5 is an axial cross-sectional view of a sleeve provided by the present invention;

fig. 6 is a comparison graph of noise reduction and absorption effects between the exhaust silencer and the existing exhaust silencer provided by the present invention.

Wherein, 1-the housing body; 2-a sleeve; 3-sealing ring; 4-cover plate; 5-air outlet pipe; 6-a fixing piece; 7-a cylinder block; 8-a first chamber; 9-a second chamber; 10-a communication channel; 11-an air inlet; 12-air outlet; 21-a first sleeve; 22-a second sleeve; 23-communication port.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail with reference to the accompanying examples and figures 1-6. FIG. 1 is a schematic view of an exhaust muffler provided by the present invention; fig. 2 is a schematic structural diagram of an exhaust muffler provided by the present invention; fig. 3 is an exploded view of the exhaust muffler provided by the present invention; fig. 4 is a schematic structural view of the sleeve provided by the present invention; fig. 5 is an axial cross-sectional view of a sleeve provided by the present invention; and, fig. 6 is a comparison graph of noise reduction and absorption effects between the exhaust silencer and the existing exhaust silencer provided by the present invention.

The utility model provides an exhaust silencer, including the muffler main part, be equipped with a plurality of cavities of mutual intercommunication in the muffler main part, the muffler main part is equipped with air inlet 11 and gas outlet 12, air inlet 11 with gas outlet 12 is respectively with same the cavity intercommunication.

Through setting up a plurality of cavities, and one of them cavity with locate air inlet 11 and gas outlet intercommunication in the muffler main part, then with the cavity of air inlet 11 and gas outlet intercommunication as the main cavity, other cavity with the main cavity direct or indirect intercommunication then regard as resonance chamber, through the number to these resonance chambers, size and with the design of the intercommunication mode of main cavity, can make its noise that can eliminate the specific frequency of various differences, the noise cancelling effect of muffler has improved on the whole, the electrical apparatus of having avoided compressor and having used the compressor causes the destruction to the sound environment in people's life, the travelling comfort of the electrical apparatus of compressor and use compressor has been improved, the range of application thereof has been enlarged, its popularization and application nature has been improved.

In some embodiments of the present invention, a first chamber 8, a communicating channel 10 and a second chamber 9 are disposed in the muffler main body, and the first chamber 8, the communicating channel 10 and the second chamber 9 are sequentially communicated with each other, and the air inlet 11 and the air outlet 12 are respectively communicated with the first chamber 8. The air inlet 11 and the air outlet 12 are respectively communicated with the first chamber 8, so that the first chamber 8 is used as a main chamber, the second chamber 9 is communicated with the first chamber 8 which is used as the main chamber through a communication channel 10, so that the first chamber is used as a resonance chamber for eliminating noise with specific frequency, and the resonance effect and the noise reduction effect of the first chamber are increased through the communication mode of the communication channel 10; the communication channel 10 is generally provided as a long and narrow channel, i.e. with an axial cross-section that is much smaller with respect to both the main chamber and the resonance chamber.

In some embodiments of the present invention, the length of the communication channel 10 is less than the length of the first chamber 8 in either radial direction of the communication channel 10; the length of the communication channel 10 is smaller than the length of the second chamber 9 in either radial direction of the communication channel 10. The communicating channel 10 can be set in a cylindrical shape, the axial section of the communicating channel can be circular, square or polygonal, the communicating channel is set in a long and narrow shape, the resonance effect and the noise reduction effect of the resonance chamber can be increased, the length of the communicating channel in any radial direction is smaller than that of the main chamber in the direction, and the length of the communicating channel in any radial direction is smaller than that of the resonance chamber in the direction.

In some embodiments of the present invention, the ratio of the length of the communication channel 10 to the length of the first chamber 8 in either radial direction of the communication channel 10 is 1:5-1: 15; the ratio of the length of the communication channel 10 to the length of the second chamber 9 in either radial direction of the communication channel 10 is 1:5-1: 15. The length of the communication channel 10 in any radial direction is smaller than that of the first chamber 8, and the length of the communication channel 10 in any radial direction is smaller than that of the first chamber 8, so that the communication channel 10 is a long and narrow channel relative to the first chamber 8 and the second chamber 9, and when the specific size ratio of the communication channel 10 to the first chamber 8 and the specific size ratio of the communication channel 10 to the second chamber 9 are within the above ratio range, the communication channel is convenient to produce, and has obvious noise reduction and sound removal effects on noise with specific frequency, such as 870Hz noise.

In some embodiments of the present invention, the muffler body comprises a housing and a sleeve 2 disposed inside the housing and coaxial with the housing, the air inlet 11 and the air outlet 12 are disposed on the housing respectively, the housing and the sleeve 2 form a first chamber 8 therebetween, and a second chamber 9 is formed inside the sleeve 2. Through set up sleeve 2 in the casing, can be effectual separate the space in the casing, make it become two interconnect's space, two interconnect's cavity promptly, also be the first cavity 8 and the second cavity 9 that communicate each other, and first cavity 8 is established between sleeve 2 and casing, and second cavity 9 is established in sleeve 2, and two cavities pass through sleeve 2's intercommunication mouth 23 intercommunication, simple structure, and the cavity is distributed rationally, and resonance and noise cancelling effect are obvious.

In some embodiments of the present invention, the sleeve 2 comprises a first sleeve and a second sleeve which are mutually communicated and coaxial, the inner diameter of the first sleeve 21 is larger than the inner diameter of the second sleeve 22; the open end of the first sleeve 21 is attached to the bottom of the housing, the first sleeve 21 forms the second chamber 9 therein, and the second sleeve 22 forms the communication channel 10 therein. The first sleeve has a larger inner diameter and has a side wall and a bottom wall connected with each other, one end of the side wall is connected with the bottom wall, the other end is an open end of the first sleeve 21, the axis of the bottom wall is provided with an opening matched with the second sleeve 22, one end of the second sleeve 22 is connected with the bottom wall and is communicated with the first sleeve 21 through the opening, the other end of the second sleeve 22 is the open end of the second sleeve 22, the inner diameter of the first sleeve 21 is larger, and the open end is connected with the bottom of the shell in a fitting manner, so that the bottom wall, the side wall and the bottom of the shell of the first sleeve 21 surround to form a first chamber 8, and the inner diameter of the second sleeve 22 is smaller and has a long and narrow shape suitable for forming a communication channel 10 which is communicated with the second chamber 9 and the first chamber 8 formed between the sleeve 2 and the shell.

In some embodiments of the present invention, the open end of the second sleeve 22 is attached to the top surface of the housing, and the second sleeve 22 is provided with a communication port 23. The open end of the first sleeve 21 is attached to, i.e. abutted against, the bottom of the housing; the open end of the second sleeve 22 is in abutting connection, i.e. against, the top of the housing. The two ends of the sleeve 2 are respectively abutted against the bottom and the top of the shell, the bottom and the top of the shell limit the position of the sleeve 2 in the axial direction, the sleeve is prevented from moving in the axial direction, the position stability of the sleeve 2 is improved, the stability of the first cavity 8, the second cavity 9 and the communication channel 10 is improved, and the noise reduction effect under the cooperation of the three is further improved; the open end of the second sleeve 22 is abutted against the top of the shell to close the open end, and the communication port 23 is arranged at other positions of the second sleeve 22 to enable the first chamber 8 and the second chamber 9 to be communicated with the communication port 23 through the communication channel 10, so that the second chamber 9 can finish resonance, and the effects of reducing noise and eliminating noise are achieved.

In some embodiments of the present invention, the second sleeve 22 is provided with two oppositely disposed communication ports 23. The communicating ports 23 are arranged on the radial direction of the second sleeve 22, the two oppositely arranged communicating ports 23 are the two communicating ports 23 arranged at two ends of the same diameter of the second sleeve 22, and the first cavity 8 surrounds the second sleeve 22, so that the two oppositely arranged communicating ports 23 are arranged, so that the communicating effect of the first cavity 8 and the second cavity 9 is better, the resonance effect of the second cavity 9 is better, and the noise reduction and absorption effects are more obvious.

In some embodiments of the present invention, the outer wall of the first sleeve 21 is attached to the inner wall of the housing. If a gap exists between the first sleeve 21 and the shell, an annular space with extremely small thickness exists in the first chamber 8, the existence of the space can lead the air suction and exhaust in the first chamber 8 to be detained, so that the vibration effect is weakened, the space can be eliminated by attaching the outer wall of the first sleeve 21 and the inner wall of the shell, the first chamber 8 is an annular space with larger thickness and surrounds the second sleeve 22, the vibration effect is enhanced, and the noise reduction effect is increased; in order to enable the first sleeve 21 to be attached to the inner wall of the shell conveniently, the sleeve 2 can be set to be thin, the thickness cannot be too thin, the too thin thickness cannot resist the airflow impact aligned with the air inlet 11, the too thick thickness does not have enough elasticity to enable the sleeve to be effectively pressed into the shell, and through repeated tests, the effect that the thickness of the sleeve 2 is designed to be 0.6mm is optimal, namely the sleeve can resist the airflow impact aligned with the air inlet 11, and the sleeve has enough elasticity to enable the sleeve to be effectively pressed into the shell.

In some embodiments of the present invention, the housing includes a housing body 1 and a cover plate 4, the top of the housing body 1 is provided with an opening coaxial therewith, and the cover plate 4 is connected with the housing body 1 to close the opening. The shell is arranged to be of a split structure, so that the inner sleeve 2 and other necessary parts of the shell can be conveniently assembled and disassembled, the assembling convenience and the assembling efficiency are improved, and the labor cost is saved.

In some embodiments of the present invention, a sealing ring 3 is disposed between the housing body 1 and the cover plate 4. The setting of sealing washer 3 can further improve the sealed of apron 4 in to casing main part 1, further improves the holistic sealed effect of casing, and then has improved the gas tightness of each cavity in it, has further improved the vibration effect in each cavity and has fallen the noise cancelling effect of making an uproar. The housing body 1 is disposed on a cylinder block 7 of the compressor, and the housing body 1 and the cylinder block 7 may be integrally formed.

In some embodiments of the present invention, the bottom of the housing body 1 is provided with a main fixing hole coaxial therewith, the cover plate 4 is provided with an auxiliary fixing hole coaxial therewith, and the cover plate 4 is connected to the housing body 1 through a fixing member 6 penetrating through the main fixing hole and the auxiliary fixing hole. The shell body 1, the cover plate 4, the main fixing hole, the auxiliary fixing hole, the first sleeve and the second sleeve are respectively coaxial, and the fixing piece 6 sequentially penetrates through the cover plate 4, the second sleeve 22 and the first sleeve 21 and then is connected with the main fixing hole, so that the axes of all parts of the whole silencer are consistent and are designed to surround the fixing piece 6, the overall symmetry of all parts of the silencer is improved, and the vibration effect of the first cavity 8, the communication effect of the communication channel 10, the resonance effect of the second cavity 9 and the noise reduction and absorption effects of the whole silencer are improved; fixing bolt can be selected to specific mounting 6, fixing bolt's one end connection nut, the other end is provided with the external screw thread, can set up the internal thread that matches with the external screw thread in the main fixed orifices, and can set up the sealing washer 3 that has elastic material in the vice fixed orifices, make fixing bolt pass vice fixed orifices after, the inner wall and the fixing bolt interference fit of sealing washer 3 are connected, the outer wall of sealing washer 3 is connected with the inner wall interference fit of vice fixed orifices, the lid of nut in addition establishes, the gas tightness of casing has been increased on the whole.

In some embodiments of the present invention, the air inlet 11 is disposed on the side wall of the housing body 1, and the air outlet 12 is disposed on the cover plate 4. The air is more stably fed from the side wall, and the stability of air feeding is improved.

In some embodiments of the present invention, the present invention further comprises an outlet pipe 5, wherein the outlet pipe 5 is along the outlet 12 respectively extending into the housing and out of the housing. The air outlet pipe 5 increases the flow guiding function for air outlet, so that the air outlet is smoother, and the end part of the air outlet pipe 5 in the shell can be consistent with the height of the air inlet 11, so that the integral smoothness of air inlet and outlet is improved.

Install back in the compressor through the exhaust silencer who provides this application, the compressor operation in-process, the sound noise reduction effect of inhaling of the exhaust silencer who provides this application detects to inhale the sound noise reduction effect and detect in the compressor operation process to installing current exhaust silencer, two kinds of exhaust silencer's the sound effect of inhaling that falls are shown in figure 6, original exhaust silencer is 17dB to the transmission loss of 875Hz noise, the exhaust silencer that this application provided is 70dB to the transmission loss of 875Hz noise. Compared with the original exhaust silencer, the exhaust silencer provided by the utility model has the advantage that the noise reduction effect of 875Hz is obviously improved.

Based on the same invention thought, the utility model also provides an electrical appliance, including the compressor. The electric appliance may be a refrigerator, an air conditioner, or the like.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides an exhaust muffler, its characterized in that includes the muffler main part, be equipped with a plurality of cavities of mutual intercommunication in the muffler main part, the muffler main part is equipped with air inlet (11) and gas outlet (12), air inlet (11) with gas outlet (12) respectively with same the cavity intercommunication.

2. The exhaust silencer according to claim 1, characterized in that a first chamber (8), a communication passage (10) and a second chamber (9) are provided in the silencer body, which are communicated in sequence, and the inlet (11) and the outlet (12) are communicated with the first chamber (8), respectively.

3. The exhaust muffler according to claim 2, characterized in that the length of the communication passage (10) is smaller than the length of the first chamber (8) in either radial direction of the communication passage (10);

the length of the communication channel (10) is smaller than the length of the second chamber (9) in either radial direction of the communication channel (10).

4. The exhaust muffler according to claim 2, characterized in that the ratio of the length of the communication channel (10) to the length of the first chamber (8) in either radial direction of the communication channel (10) is 1:5-1: 15;

the ratio of the length of the communication channel (10) to the length of the second chamber (9) in either radial direction of the communication channel (10) is 1:5-1: 15.

5. The exhaust muffler according to claim 2, wherein the muffler body comprises a housing and a sleeve (2) disposed therein and coaxial with the housing, the inlet (11) and the outlet (12) are disposed on the housing, respectively, the housing and the sleeve (2) form a first chamber (8) therebetween, and the sleeve (2) forms a second chamber (9) therein.

6. The exhaust muffler according to claim 5, characterized in that the sleeve (2) comprises a first sleeve (21) and a second sleeve (22) communicating with each other and coaxial, the inner diameter of the first sleeve (21) being larger than the inner diameter of the second sleeve (22);

the open end of the first sleeve (21) is attached to the bottom of the shell, a second cavity (9) is formed in the first sleeve (21), and a communication channel (10) is formed in the second sleeve (22).

7. The exhaust muffler according to claim 6, characterized in that the open end of the second sleeve (22) abuts the top surface of the housing, the second sleeve (22) being provided with a communication opening (23).

8. The exhaust muffler according to claim 7, characterized in that the second sleeve (22) is provided with two oppositely arranged communication ports (23).

9. The exhaust muffler according to claim 6, characterized in that the outer wall of the first sleeve (21) is in abutment with the inner wall of the housing.

10. The exhaust muffler according to claim 5, wherein the housing includes a housing main body (1) and a cover plate (4), the top of the housing main body (1) is provided with an opening coaxial therewith, and the cover plate (4) is connected with the housing main body (1) to close the opening.

11. The exhaust muffler according to claim 10, wherein a sealing ring (3) is provided between the housing body (1) and the cover plate (4).

12. The exhaust muffler according to claim 10, wherein the bottom of the housing body (1) is provided with a main fixing hole coaxial therewith, the cover plate (4) is provided with a sub fixing hole coaxial therewith, and the cover plate (4) is connected with the housing body (1) by a fixing member (6) penetrating the main fixing hole and the sub fixing hole.

13. The exhaust silencer according to claim 10, characterized in that the air inlet (11) is provided on a side wall of the housing body (1) and the air outlet (12) is provided on the cover plate (4).

14. The exhaust silencer of claim 5 further comprising an outlet duct (5), the outlet duct (5) extending along the outlet opening (12) into and out of the housing, respectively.

15. A compressor, characterized by comprising the exhaust muffler of any one of claims 1 to 14.

16. An electrical appliance comprising the compressor of claim 15.