CN216642492U - Volute device, compressor and refrigeration equipment - Google Patents

Abstract

The utility model relates to a volute device, a compressor and refrigeration equipment, wherein the volute device is provided with a diffusion flow channel and an exhaust flow channel communicated with the diffusion flow channel, the volute device also comprises a silencing module used for absorbing sound energy, and the silencing module is positioned in at least one of the diffusion flow channel and the exhaust flow channel. According to the volute device, at least one of the diffusion flow channel and the exhaust flow channel is denoised by the silencing module, so that the working noise of the volute device is effectively reduced, and the noise pollution generated by the compressor is obviously reduced.

Description

Volute device, compressor and refrigeration equipment

Technical Field

The utility model relates to the technical field of refrigeration, in particular to a volute device, a compressor and refrigeration equipment.

Background

With the rapid development of the refrigeration and air-conditioning industry, millions of tons of refrigerants are needed in the refrigeration field every year, however, the artificial synthetic refrigerants such as chlorofluorocarbons and the like can aggravate the damage to the ozone layer and the greenhouse effect, so that the refrigeration and air-conditioning industry faces serious challenges. Therefore, the search for new, efficient, environmentally friendly and readily available refrigerants has become a consensus throughout the refrigeration field. As the most available working medium, water has the advantages of environmental protection, easily available raw materials, low cost, good safety, high stability, large latent heat of vaporization and the like, so that a centrifugal water-vapor compressor using water as a refrigerating medium becomes a current research hotspot.

The centrifugal water vapor compressor is used in combination with other equipment in a refrigeration cycle, the pressure ratio of water vapor can be effectively improved, and the exhaust temperature of the water vapor is reduced, so that the efficiency of a system is improved, and the energy consumption is reduced. However, when the pressure ratio of the compressor is high or the flow rate is low, the working noise generated by the compressor can seriously affect the normal life and work of people around the compressor, so that in the practical application process of the centrifugal water vapor compressor, corresponding noise reduction measures are required to reduce noise pollution.

SUMMERY OF THE UTILITY MODEL

The utility model provides a volute device, a compressor and refrigeration equipment aiming at the problem of higher working noise of a centrifugal water vapor compressor, and the volute device, the compressor and the refrigeration equipment can achieve the technical effect of effectively reducing the working noise.

According to one aspect of the present application, there is provided a volute apparatus having a diffuser flow passage and an exhaust flow passage communicating with the diffuser flow passage, the volute apparatus further comprising a sound-deadening module for absorbing sound energy, the sound-deadening module being located inside at least one of the diffuser flow passage and the exhaust flow passage.

In one embodiment, the silencing module is embedded in the channel wall of the diffusion channel and/or the exhaust channel and is configured to be in smooth transition with the channel wall where the silencing module is located.

In one embodiment, the diffusion flow passage comprises a first flow passage and a second flow passage communicating the first flow passage and the exhaust flow passage, and the cross-sectional area of the second flow passage is smaller than that of the first flow passage;

in the silencing modules positioned in the diffusion flow channel, one part of the silencing modules are positioned in the first flow channel, and the other part of the silencing modules are positioned in the second flow channel.

In one embodiment, the diffuser flow channel is annularly arranged around a central point, at least three silencing modules are arranged in the first flow channel, all the silencing modules are arranged around the central point at intervals, and the straight line distances between every two adjacent silencing modules are equal.

In one embodiment, three silencing modules are arranged in the first flow channel, and the three silencing modules are respectively positioned at three vertexes of a virtual equilateral triangle, and the virtual equilateral triangle takes the central point as a geometric center.

In one embodiment, two silencing modules are arranged in the second flow passage, and the two silencing modules are positioned on two opposite sides of the second flow passage in the direction perpendicular to the flowing direction of the airflow.

In one embodiment, the silencing modules arranged in the exhaust flow passage are located at an exhaust port at one end of the exhaust flow passage far away from the diffusion flow passage, and the silencing modules are arranged at intervals along the circumferential direction of the exhaust port.

In one embodiment, the silencing module comprises a mounting shell and at least one layer of micro-perforated plate, the mounting shell is provided with a mounting cavity with an opening at one end, the at least one layer of micro-perforated plate is accommodated in the mounting cavity, and a silencing cavity is arranged on one side, away from the opening end of the mounting cavity, of each layer of micro-perforated plate.

In one embodiment, the silencing module comprises two layers of micro-perforated plates which are arranged at intervals, wherein one layer of micro-perforated plate is positioned at the opening end of the installation cavity.

In one embodiment, the silencing module further comprises a porous single body, and the porous single body is accommodated in the installation cavity and is positioned between two adjacent layers of the micro-perforated plates.

According to one aspect of the present application, there is provided a compressor comprising the above-described volute apparatus.

In one embodiment, the compressor is a centrifugal water vapor compressor.

According to one aspect of the present application, there is provided a refrigeration apparatus including the compressor described above.

According to the volute device, at least one of the diffusion flow channel and the exhaust flow channel is subjected to noise reduction by the noise elimination module, so that the working noise of the volute device is effectively reduced, and the noise pollution generated by the compressor is obviously reduced.

Drawings

FIG. 1 is a schematic view of a volute apparatus according to an embodiment of the utility model;

FIG. 2 is an exploded schematic view of the volute apparatus of FIG. 1;

FIG. 3 is a cross-sectional view of the volute apparatus of FIG. 1;

FIG. 4 is a cross-sectional view at A-A of the volute apparatus of FIG. 3;

FIG. 5 is a schematic view of the internal structure of the volute apparatus of FIG. 1;

fig. 6 is a schematic view of the internal structure of the muffler module according to an embodiment of the present invention.

The reference numbers illustrate:

100. a volute means; 10. a volute; 12. an exhaust flow passage; 14. a diffusion curved surface; 30. a diffuser; 50. an impeller; 70. a diffusion flow channel; 72. a first flow passage; 74. a second flow passage; 90. a noise elimination module; 91. mounting a shell; 92. a first microperforated panel; 93. a second microperforated panel; 94. a first muffling chamber; 95. a second muffling chamber; 97. a porous monomer.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, 2 and 3, fig. 1 is a schematic structural diagram illustrating a volute apparatus according to an embodiment of the present invention, fig. 2 is an exploded schematic diagram illustrating the volute apparatus according to an embodiment of the present invention, and fig. 3 is a cross-sectional view illustrating the volute apparatus according to an embodiment of the present invention.

An embodiment of the present invention provides a refrigeration apparatus (not shown), which includes a compressor for compressing a refrigerant, wherein the compressor includes a volute device for increasing a flow speed of the refrigerant and converting the speed into pressure energy. The structure of the middle scroll device 100 according to the present application will be described below by taking a centrifugal steam compressor using steam as a refrigerant as an example of the compressor. The present embodiment is described as an example, and the technical scope of the present application is not limited thereto. It is understood that in other embodiments, the compressor may be embodied as other types of compressors mounted with the volute apparatus 100, and is not limited thereto.

Referring to fig. 4 and 5, fig. 4 is a sectional view taken along a line a of the scroll device shown in fig. 3, and fig. 5 is a schematic view showing an internal structure of the scroll device according to an embodiment of the present invention.

The volute apparatus 100 includes a volute 10, a diffuser 30, and an impeller 50. The volute 10 is an irregular hollow structure formed by casting, the impeller 50 is rotatably mounted on one side of the volute 10, and the other side of the volute 10 is provided with a diffusion curved surface 14 circumferentially surrounding the impeller 50. The diffuser 30 is installed at one side of the volute 10, which is provided with the diffusion curved surface 14, along the axial direction of the impeller 50, the end surface of one side of the diffuser 30, which faces the volute 10, and the diffusion curved surface 14 of the volute 10 define together to form a diffusion flow channel 70, the diffusion flow channel 70 is annularly arranged around a central point, and the central point of the diffusion flow channel 70 coincides with the center of gravity of the impeller 50. The volute 10 is further provided with an exhaust channel 12 communicated with an external element, one end of the exhaust channel 12 is communicated with the diffusion channel 70, and the other end of the exhaust channel 12 extends outwards along the tangential direction of the diffusion channel 70.

Thus, the water vapor enters the volute casing 10 from the side of the volute casing 10 away from the diffuser 30 along the axial direction of the impeller 50, and after passing through the rotating impeller 50, the water vapor flows along the radial direction of the impeller 50 to enter the diffuser flow channel 70, then flows into the exhaust flow channel 12 along the diffuser flow channel 70, and finally flows out of the volute casing device 100 through the exhaust flow channel 12. The diffusion flow channel 70 has a diffusion function on the water vapor to increase the pressure of the water vapor.

As described in the background art, the centrifugal water vapor compressor generates a large noise in the operation process, and the utility model discloses a research finds that the aerodynamic noise is the main source of the operation noise of the centrifugal water vapor compressor, and the principle of the aerodynamic noise generation is that the water vapor generates a strong airflow pulsation in the downstream of the impeller 50 due to the dynamic and static interference effect of the impeller 50 and the diffuser 30 in the flowing process, further causing the volute device 100 to vibrate to generate noise and radiate outwards. Therefore, the noise of the centrifugal water vapor compressor mainly comes from the diffusion flow passage 70 and the exhaust flow passage 12, and the noise of at least one of the diffusion flow passage 70 and the exhaust flow passage 12 is effectively reduced, that is, the operating noise generated by the centrifugal water vapor compressor can be effectively reduced.

In order to solve the above problem, as shown in fig. 4 and 5, the volute apparatus 100 of the present application includes a sound attenuation module 90 for absorbing sound energy. The noise elimination module 90 is located inside at least one of the diffuser flow passage 70 and the exhaust flow passage 12, so that noise reduction can be performed on at least one of the diffuser flow passage 70 and the exhaust flow passage 12, thereby effectively reducing the working noise of the volute device 100 and significantly reducing noise pollution generated by the centrifugal water vapor compressor.

Specifically, at least one of the flow path wall of the diffusion flow path 70 and the flow path wall of the exhaust flow path 12 formed by the diffusion curved surface 14 of the scroll casing 10 is provided with a mounting groove, the silencing module 90 is correspondingly accommodated in the mounting groove, the shape of the mounting groove is matched with the shape of the corresponding silencing module 90, and the outer surface of the silencing module 90 is flush with the flow path wall where the silencing module is located. In this way, the muffler module 90 is embedded in the diffuser duct 70 and/or the duct wall of the exhaust duct 12, and is in smooth transition with the duct wall where the muffler module is currently located.

Since the muffling module 90 is embedded in the diffuser flow channel 70 and/or the flow channel wall of the exhaust flow channel 12, and the flow channel wall corresponding thereto is in smooth transition, it is possible to avoid interference with the flow of water vapor due to the installation of the muffling module 90, and to reduce the flow loss caused by the water vapor flowing through the muffling module 90.

In order to achieve a better noise reduction effect, in the following embodiments, the volute device 100 of the present application includes a plurality of noise elimination modules 90, one part of the noise elimination modules 90 is located in the diffusion flow channel 70, and the other part of the noise elimination modules 90 is located in the exhaust flow channel 12, so as to respectively reduce noise of the diffusion flow channel 70 and the exhaust flow channel 12, further implement noise reduction and silencing of the whole channel of the volute device 100, and finally significantly reduce the operating noise of the volute device 100.

Specifically, the diffuser 70 includes a first flow path 72 and a second flow path 74 connecting the exhaust flow path 12, and the cross-sectional area of the second flow path 74 is smaller than that of the first flow path 72, so as to guide the water vapor in the first flow path 72 to the exhaust flow path 12 and prevent the water vapor from circulating in the first flow path 72 all the time. Specifically, when the water vapor passes through the vicinity of the second flow passage 74 under the driving of the impeller 50, a small portion of the air flow returns to the first flow passage 72, and again participates in the flow splitting in the first flow passage 72 as the impeller 50 rotates, and a large portion of the air flow flows into the exhaust flow passage 12 through the second flow passage 74. Since the cross-sectional area of the second flow passage 74 is smaller than that of the first flow passage 72, the water vapor flows through the second flow passage 74 to generate strong air flow pulsation, thereby generating great aerodynamic noise. Wherein, in the prior art, the first flow passage 72 may also be referred to as a volute flow passage, and the second flow passage 74 may also be referred to as a volute tongue flow passage.

In order to reduce the aerodynamic noise generated by the diffuser flow passage 70, in the muffler module 90 located inside the diffuser flow passage 70, a part of the muffler module 90 is located inside the first flow passage 72, and the remaining part of the muffler module 90 is located inside the second flow passage 74. In this way, the noise elimination module 90 located in the first flow passage 72 and the noise elimination module 90 located in the second flow passage 74 can reduce noise in the first flow passage 72 and the second flow passage 74 respectively, so as to achieve better noise reduction and elimination effects.

Specifically, in some embodiments, at least three silencing modules 90 are disposed inside the first flow channel 72, all the silencing modules 90 are spaced around the central point of the diffuser flow channel 70, and the straight distances between every two adjacent silencing modules 90 are equal, so that the first flow channel 72 is equally divided into a plurality of portions along the airflow flowing direction, the noise of the first flow channel 72 is fully absorbed, and a good noise reduction effect is achieved.

Further, the present invention finds in research that, on one hand, the noise elimination module 90 is not easy to be disposed due to the irregular extension of the channel wall of the first channel 72, and on the other hand, if too many noise elimination modules 90 are disposed, the gas flow is easily interfered, so that as a preferred embodiment, only three noise elimination modules 90 are disposed in the first channel 72, and the three noise elimination modules 90 are respectively located at three vertexes of a virtual equilateral triangle (as shown in fig. 4) which uses the central point of the diffusion channel 70 as the geometric center, so as to equally divide the first channel 72 into three equal parts along the flowing direction of the gas flow to respectively absorb the noise in different areas.

In this way, while the noise elimination module 90 covers all areas of the first flow channel 72, the influence of the installation of the noise elimination module 90 on the flow of the water vapor is reduced as much as possible, and the generation of the aerodynamic noise is effectively prevented. Furthermore, the three muffler modules 90 located in the first flow passage 72 and the flow passage wall of the first flow passage 72 approximately form a virtual reuleaux triangle, so that the shape of the flow passage wall of the first flow passage 72 in which the muffler modules 90 are arranged is substantially identical to the original shape thereof, thereby avoiding interference with the flow of water vapor and further reducing the flow loss of water vapor through the muffler modules 90.

The reuleaux triangle, also called reuleaux triangle, reuleaux triangle or circular triangle, is a special triangle, which refers to a curved triangle formed by three sections of circular arcs, wherein the circular arcs are respectively made by taking the vertex of a regular triangle as the center of a circle and the side length of the regular triangle as the radius.

It is understood that the number and arrangement of the sound attenuation modules 90 in the first flow channel 72 are not limited thereto, for example, in other embodiments, four sound attenuation modules 90 are disposed in the first flow channel 72, and the four sound attenuation modules 90 are respectively disposed at four vertices of a virtual diamond, which takes the center point of the diffuser flow channel 70 as the geometric center, so as to equally divide the first flow channel 72 into four equal parts along the flow direction of the air flow to respectively absorb the noise in different areas.

In some embodiments, two muffler modules 90 are disposed within the second flow passage 74, with the two muffler modules 90 being located on opposite sides of the second flow passage 74 in a direction perpendicular to the flow direction of the water vapor. The muffler module 90 located in the second flow passage 74 can not only absorb noise in the second flow passage 74, but also reduce outward radiation of noise, thereby minimizing noise. It is understood that the number of muffler modules 90 in the second flow passage 74 and the arrangement of the muffler modules 90 are not limited, and can be set as required to meet different requirements.

Referring to fig. 4 and 5, in some embodiments, the muffler module 90 disposed in the exhaust channel 12 is located at the exhaust port of the exhaust channel 12 far from the diffuser channel 70, and the muffler modules 90 are disposed at intervals along the circumferential direction of the exhaust port. Thus, the vibration noise of the exhaust flow passage 12 can be effectively reduced, the radiation of the noise can be weakened, and a good noise reduction effect can be achieved.

In a preferred embodiment, six muffler modules 90 are disposed in the exhaust channel 12, and the six muffler modules 90 are circumferentially and equidistantly arranged at the exhaust port of the diffuser channel 70. It will be appreciated that the number of muffler modules 90 in the exhaust flow passage 12 is not limited thereto, and may be set as needed to meet various requirements.

In summary, different numbers of the muffler modules 90 are respectively disposed inside the first flow passage 72, the second flow passage 74 and the exhaust flow passage 12 of the diffuser flow passage 70, and the scroll casing device 100 is subjected to full-passage noise reduction treatment from two aspects of reducing air flow pulsation and attenuating sound radiation, so as to control vibration noise of the scroll casing device 100, and further reduce the overall noise level of the compressor provided with the scroll casing device 100.

Referring to fig. 6, fig. 6 is a schematic view of the internal structure of a muffler module according to an embodiment of the present invention. In some embodiments, muffler module 90 is a cubic structure including a mounting shell 91 and at least one layer of microperforated panels. The mounting case 91 has a hollow case-like structure formed of a metal such as stainless steel, and has a mounting cavity with one open end. The mounting shell 91 is used for fixing the micro-perforated plate so as to ensure the structural stability of the silencing module 90, and prevents the micro-perforated plate from falling off when the compressor operates and causing the abnormal operation of the compressor. The microperforated panel is the tabular structure that is formed by stainless steel material, and all microperforated panels all install in installation shell 91, and the one side that the open end of installation cavity was kept away from to every layer of microperforated panel has the noise elimination cavity, runs through on the microperforated panel and has seted up a plurality of noise elimination micropores.

Specifically, when the sound wave is incident to the muffling module 90, a part of the sound wave is reflected by the micro-perforated plate, so that the transmitted sound energy is weakened, a part of the sound wave enters the micro-perforated plate along the incident direction, resonance is generated when the incident wavelength is matched with the acoustic impedance of the micro-perforated plate, the sound wave oscillates in the muffling micro-holes and the muffling cavity, the friction resistance is overcome, and the sound energy is consumed (absorbed), so that the sound absorption effect is achieved. Meanwhile, when sound waves enter the silencing cavity from the silencing micropores, a part of sound energy is consumed (absorbed) due to friction and thermal adhesion effects between the sound waves and the hole walls of the silencing micropores, so that the sound absorption performance of the whole structure is improved.

As a preferred embodiment, the shape of the micro-perforated plate at the open end of the installation cavity may be set according to the shape of the channel wall of the diffuser channel 70 or the channel wall of the exhaust channel 12 so as to be consistent with the extending direction of the channel wall as much as possible, thereby further reducing the flow loss of the water vapor through the muffler module 90.

Furthermore, because the single-layer micro-perforated plate corresponds to an eigenfrequency, a periodic resonance sound absorption peak is generated, and the fluctuation of a sound absorption curve is large. And there is the coupling effect between the multilayer microperforated panel, produces a plurality of coupling resonance sound absorption peaks, has widened sound absorption frequency range, and the sound absorption curve is comparatively flat. Therefore, as a preferred embodiment, the muffling module 90 comprises a first micro-perforated plate 92 and a second micro-perforated plate 93, wherein the first micro-perforated plate 92 is accommodated in the installation cavity and located at the open end of the installation cavity, the second micro-perforated plate 93 is accommodated in the installation cavity and located at the side of the first micro-perforated plate 92 away from the open end, the first micro-perforated plate 92 and the second micro-perforated plate 93 are spaced apart from each other to form a first muffling cavity 94, and the second micro-perforated plate 93 and the bottom wall of the installation cavity are spaced apart from each other to form a second muffling cavity 95. Thus, the first and second microperforated plates 92 and 93 work together to effectively widen the sound absorption frequency range.

Further, the utility model discloses the people discovers in the research that although the biggest sound absorption coefficient is less under the aperture, its sound absorption frequency band is wider, can obtain great average sound absorption coefficient. When the rest structural parameters of the micro-perforated plate are fixed and the thickness of the micro-perforated plate is gradually increased, the resonance frequency of the silencing module 90 gradually moves towards the low-frequency direction, the sound absorption frequency band gradually narrows, and the maximum sound absorption coefficient is increased firstly and then gradually reduced. It can be seen that increasing the thickness of the microperforated panel as appropriate can improve the overall sound absorption performance of the muffler module 90. When other structural parameters are fixed, the resonance frequency of the noise elimination module 90 gradually moves towards the high-frequency direction along with the gradual increase of the perforation rate, the sound absorption frequency band gradually becomes wider, and the maximum sound absorption coefficient is in a change rule of increasing firstly and then gradually decreasing.

Thus, in an embodiment, the diameter of the sound-attenuating micro-holes of the micro-perforated plate is less than 1mm, preferably 0.5 mm; the thickness is between 0.2 mm and 1mm, and 0.5mm is preferred; the perforation rate of the silencing micropores is between 0.8 and 2.5 percent, and is preferably 1 or 2 percent. Therefore, as a preferred embodiment, the perforation rate of the first micro-perforated plate 92 is 1%, and the perforation rate of the second micro-perforated plate 93 is 2%, which, in combination, can effectively widen the sound absorption frequency band, and ensure good noise reduction effect in the whole working condition range. The perforation rate is the ratio of the sum of the areas of the silencing micropores on the micro-perforated plate per unit area to the total area of the micro-perforated plate per unit area. It is understood that the material forming the micro-perforated plate is not limited to stainless steel, and other metal materials satisfying the centrifugal water vapor compressor process may be selected.

It should be noted that the sound attenuation micropores formed in the first microperforated panel 92 and the second microperforated panel 93 in fig. 6 are only for illustrative purposes, and do not represent the actual size of the sound attenuation micropores.

In some embodiments, in order to further improve the sound absorption effect of the sound attenuation module 90, the sound attenuation module 90 further includes a porous single body 97, the porous single body 97 is made of a material with high porosity and high specific surface area, such as a foamed metal material, and the porous single body 97 is accommodated in the first sound attenuation chamber 94 and located between the first micro-perforated plate 92 and the second micro-perforated plate 93, so that the sound absorption effect of the sound attenuation module 90 is further enhanced by utilizing the volume of the installation chamber to maximally absorb noise.

It is to be understood that the material forming the porous monomer 97 is not limited thereto, and may be provided as needed to satisfy various requirements. In other embodiments, the sound attenuation module 90 may also be formed of sound attenuation elements, such as resonant mufflers, that employ other noise reduction principles.

According to the volute device 100 and the compressor with the same, the silencing modules 90 are respectively arranged on the diffusion flow channel 70 and the exhaust flow channel 12, so that the silencing and noise-reducing effects of all channels are achieved, meanwhile, the influence on the flow of water vapor is minimized, the silencing modules 90 are light and simple in structure and simple in arrangement, the production cost of the volute device 100 cannot be obviously increased, and the noise-reducing and silencing performance and the operation reliability of the centrifugal water vapor compressor are effectively improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (13)

1. A volute apparatus having a diffuser flow passage (70) and an exhaust flow passage (12) in communication with the diffuser flow passage (70), the volute apparatus further comprising a sound suppression module (90) for absorbing sound energy, the sound suppression module (90) being located inside at least one of the diffuser flow passage (70) and the exhaust flow passage (12).

2. The volute apparatus of claim 1, wherein the sound attenuation module (90) is embedded in a wall of the diffuser flow passage (70) and/or the exhaust flow passage (12) and is configured to smoothly transition with the wall of the flow passage in which it is currently located.

3. A volute apparatus according to claim 1, wherein the diffuser flow passage (70) includes a first flow passage (72) and a second flow passage (74) communicating the first flow passage (72) with the exhaust flow passage (12), the second flow passage (74) having a cross-sectional area less than a cross-sectional area of the first flow passage (72);

among the muffler modules (90) located inside the diffuser flow passage (70), a part of the muffler modules (90) is located inside the first flow passage (72), and the remaining part of the muffler modules (90) is located inside the second flow passage (74).

4. The volute apparatus of claim 3, wherein the diffuser flow channel (70) is circumferentially disposed about a center point, wherein at least three of the muffler modules (90) are disposed in the first flow channel (72), wherein all of the muffler modules (90) are spaced about the center point, and wherein linear distances between every two adjacent muffler modules (90) are equal.

5. The volute apparatus of claim 4, wherein three of the muffler modules (90) are disposed in the first flow passage (72), and wherein the three muffler modules (90) are located at three vertices of a virtual equilateral triangle that is geometrically centered on the center point.

6. A volute apparatus according to claim 3, wherein two of the muffler modules (90) are disposed in the second flow passage (74), the two muffler modules (90) being located on opposite sides of the second flow passage (74) perpendicular to a direction of flow of the gas stream.

7. The volute apparatus of claim 1, wherein the muffler module (90) disposed in the exhaust channel (12) is located at an exhaust port at an end of the exhaust channel (12) remote from the diffuser channel (70), and a plurality of the muffler modules (90) are spaced apart along a circumferential direction of the exhaust port.

8. The volute apparatus according to any of the claims 1-7, wherein the noise elimination module (90) comprises a mounting housing (91) and at least one layer of microperforated plate, wherein the mounting housing (91) has a mounting cavity with an open end, the at least one layer of microperforated plate is received in the mounting cavity, and a noise elimination cavity is formed in each layer of microperforated plate on a side away from the open end of the mounting cavity.

9. The volute apparatus of claim 8, wherein the sound attenuation module (90) comprises two layers of the microperforated sheets, the two layers being spaced apart, wherein one layer of the microperforated sheets is positioned at the open end of the mounting chamber.

10. The volute apparatus of claim 8, wherein the sound attenuation module (90) further comprises a single porous block (97), the single porous block (97) being received within the mounting chamber and located between two adjacent layers of the microperforated sheets.

11. A compressor comprising a volute assembly according to any one of claims 1 to 10.

12. The compressor of claim 11, wherein the compressor is a centrifugal water vapor compressor.

13. A refrigeration apparatus, comprising a compressor according to any one of claims 11 or 12.

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