Flow guider and compressor

Abstract

The invention provides a fluid director and a compressor, the compressor comprises the fluid director, an impeller, a diffuser and a volute, the impeller and the diffuser are used for being installed in the volute, and one end of the fluid director is used for being installed in the volute and used for being matched with the impeller. The fluid director comprises an air inlet cover and an air inlet cylinder, the air inlet cover and the air inlet cylinder define a containing cavity, and an inlet and an outlet are formed in the air inlet cover and / or the air inlet cylinder respectively; and the cooling medium can flow into the accommodating chamber from the inlet, and flows out of the accommodating chamber from the outlet after exchanging heat with the chamber wall of the fluid director. The fluid director can absorb compression heat through the cooling medium, so that the temperature of the compression medium is reduced, the variable process index of the compressor is reduced, the compression work is reduced, the variable efficiency of the compressor is improved, and the energy consumption is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a deflector and a compressor. Background Art

[0002] In a centrifugal compressor, the impeller is usually set at the end of the guide to do work on the compressed medium, thereby increasing the kinetic energy of the compressed medium. The compressed medium can also further reduce the flow velocity and increase the pressure in the subsequent diffuser and volute, that is, the entire compression process is completed by reducing the speed and increasing the pressure.

[0003] In the centrifugal compressor and blower industry, the guide vane generally adopts a single thin wall design to reduce the internal leakage loss of the impeller. During the work of the impeller, the viscosity of the compressed medium and the internal leakage will generate heat, which will increase the temperature of the compressed medium, thereby improving the variable process index of the compressor and increasing the compression work. However, the existing guide vane cannot effectively reduce the temperature of the compressed medium.

[0004] Therefore, for those skilled in the art, how to design a deflector that can reduce the temperature of the compressed medium is a technical problem that urgently needs to be solved. Summary of the invention

[0005] The object of the present invention is to provide a deflector and a compressor, wherein the deflector can absorb compression heat through a cooling medium, thereby reducing the temperature of the compressed medium, reducing the variable process index of the compressor, reducing the compression work, and improving the variable efficiency of the compressor, thereby reducing energy consumption.

[0006] To achieve the above-mentioned objectives, the present invention provides a deflector, including an air intake cover and an air intake cylinder, wherein the air intake cover and the air intake cylinder enclose a accommodating chamber, and an inlet and an outlet are respectively provided on the air intake cover and / or the air intake cylinder; a cooling medium can flow into the accommodating chamber from the inlet, and flow out of the accommodating chamber from the outlet after exchanging heat with the chamber wall of the deflector.

[0007] Optionally, a guide groove is provided on the cavity wall of the guide device, and the cooling medium flows along the guide groove after flowing into the accommodating cavity.

[0008] Optionally, the guide groove includes a plurality of first annular grooves and a plurality of second annular grooves, wherein the plurality of first annular grooves are arranged in sequence on the side wall of the guide along the axial direction of the guide, and / or the plurality of second annular grooves are arranged in sequence on the top wall and / or bottom wall of the guide along the radial direction of the guide.

[0009] Optionally, a plurality of the first annular grooves and / or a plurality of the second annular grooves are continuously arranged on the chamber wall of the deflector.

[0010] Optionally, the air intake cover and the air intake cylinder are integrally formed.

[0011] Optionally, the deflector further includes a partition plate disposed in the accommodating chamber, and the partition plate divides the accommodating chamber into a plurality of receiving chambers.

[0012] Optionally, the inlet and the outlet are spaced apart on the air inlet cover, and the cooling medium has a first rotation path with a rotation angle less than or equal to 180° and a second rotation path with a rotation angle greater than or equal to 180° in the process of flowing from the inlet and flowing out from the outlet;

[0013] The partition plate includes a first partition plate disposed on the first rotation path and used to partition the inlet and the outlet.

[0014] Optionally, the partition plate also includes at least one second partition plate, which is arranged on the second rotation path and divides the second rotation path into a plurality of the storage chambers; a flow channel is arranged between two adjacent storage chambers, and the flow channel is used to allow the cooling medium to flow between two adjacent storage chambers.

[0015] Optionally, there are multiple second partition plates, and the multiple second partition plates are arranged in sequence and spaced apart on the second rotation path along the circumference of the intake cylinder; and the flow channel is arranged between the second partition plate and the chamber wall of the deflector.

[0016] Optionally, on the second rotation path, the flow channel is formed between the odd-numbered second partition plates and the top wall of the flow guide, and the flow channel is formed between the even-numbered second partition plates and the bottom wall of the flow guide.

[0017] Alternatively, on the second rotation path, the flow channel is formed between the odd-numbered second partition plates and the bottom wall of the deflector, and the flow channel is formed between the even-numbered second partition plates and the top wall of the deflector.

[0018] To achieve the above-mentioned objectives, the present invention also provides a compressor, comprising an impeller, a diffuser, a volute and a guide vane as described in any one of the above, wherein the impeller and the diffuser are used to be installed in the volute, and one end of the guide vane is used to be installed in the volute and to cooperate with the impeller.

[0019] The present invention provides a deflector and a compressor, wherein a containing chamber is arranged inside the deflector, and a cooling medium can be introduced into the containing chamber when the compressor is working. The cooling medium can cool the chamber wall of the deflector, and then timely absorb the heat of the compressed medium through the chamber wall of the deflector, thereby reducing the temperature of the compressed medium, thereby reducing the variable process index of the compressor, reducing the compression work, improving the variable efficiency of the compressor, and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the axial cross-sectional structure of a flow guide in a preferred embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the top view of the structure of the deflector in a preferred embodiment of the present invention;

[0022] Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure after the BB line is cut along the axial direction;

[0023] Figure 4a for Figure 3 A schematic diagram of the structure in a side view along the direction of arrow A;

[0024] Figure 4b for Figure 3 A schematic diagram of the side structure along the direction of arrow D;

[0025] Figure 5 It is a front view structural schematic diagram of a flow guide in a preferred embodiment of the present invention;

[0026] Figure 6 for Figure 5 A schematic diagram of the structure viewed from above after sectioning along the CC line;

[0027] Figure 7 It is a partial cross-sectional structural schematic diagram of a compressor in a preferred embodiment of the present invention;

[0028] Figure 8a Schematic diagram of the thermodynamic process of the compressed medium when there is no heat exchange between the deflector and the compressed medium in the prior art, wherein P1 represents the isobaric line before the compressed medium is compressed, P2 represents the isobaric line after the compressed medium is compressed, the abscissa represents the entropy value of the compressed medium, and the ordinate represents the temperature value of the compressed medium;

[0029] Figure 8b This is a schematic diagram of the thermodynamic process of the compressed medium when there is heat exchange between the deflector and the compressed medium in a preferred embodiment of the present invention, wherein P1' represents the isobaric line of the compressed medium before compression, P2' represents the isobaric line of the compressed medium after compression, the abscissa represents the entropy value of the compressed medium, and the ordinate represents the temperature value of the compressed medium.

[0030] In the figure:

[0031] deflector 10; air intake cover 1; inlet 11; outlet 12; air intake cylinder 2; air intake channel 21; accommodating space 3; chamber wall 4; side wall 41; top wall 42; bottom wall 43; guide groove 5; first annular groove 51; second annular groove 52; partition plate 6; first partition plate 61; second partition plate 62; storage chamber 7; first rotation path 81; second rotation path 82; flow channel 9;

[0032] Impeller 20 ; diffuser 30 ; volute 40 . DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or a connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] Furthermore, those skilled in the art may combine and associate different embodiments or examples and features of different embodiments or examples described in this specification without mutual contradiction.

[0037] In the prior art, since the guide is designed with a single thin wall and is used to reduce the internal leakage of the impeller, after the impeller works, the viscosity of the compressed medium and the internal leakage will generate heat to increase the temperature of the compressed medium, thereby increasing the polynomial process index and increasing the compression work of the compressor.

[0038] To solve the above problems, refer to Figure 1 to Figure 3 As shown, a preferred embodiment of the present invention provides a deflector 10, comprising an air intake cover 1 and an air intake cylinder 2, the air intake cover 1 and the air intake cylinder 2 enclose a receiving chamber 3, and an inlet 11 and an outlet 12 are respectively provided on the air intake cover 1 and / or the air intake cylinder 2, that is, the inlet 11 and the outlet 12 can be selectively arranged on the air intake cover 1 and / or the air intake cylinder 2. The cooling medium can flow into the receiving chamber 3 from the inlet 11, and flow out of the receiving chamber 3 from the outlet 12 after heat exchange with the chamber wall 4 of the deflector 10, and in this process, the receiving chamber 3 is surrounded and wrapped by the cooling medium.

[0039] Reference Figure 7 As shown, a preferred embodiment of the present invention further provides a compressor, including an inducer 10, an impeller 20, a diffuser 30 and a volute 40, wherein the impeller 20 and the diffuser 30 are used to be installed in the volute 40, and one end of the inducer 10 is used to be installed in the volute 40 and to cooperate with the impeller 20. Specifically, one end of the inducer 10 is used to abut against the inner wall of the impeller 20 to reduce and adjust the internal air leakage of the impeller 20.

[0040] When the compressor is working, the compressed gas passes through the intake passage 21 of the guide 10 (refer to Figure 7 ) enters the impeller 20 and increases the flow rate through the impeller 20, and then reduces the flow rate and increases the pressure under the action of the diffuser 30 and the volute 40, and then discharges the compressor from the outlet passage (not shown).

[0041] The present invention provides a deflector and a compressor, wherein a accommodating chamber 3 is arranged inside the deflector 10. When the compressor is working, a cooling medium can be introduced into the accommodating chamber 3. The cooling medium can cool the chamber wall 4 of the deflector 10, and then the heat of the compressed medium is timely absorbed through the chamber wall 4 of the deflector 10 to reduce the temperature of the compressed medium, thereby reducing the variable process index of the compressor, reducing the compression work, improving the variable efficiency of the compressor, and reducing energy consumption.

[0042] In more detail, the compressed medium contacts the chamber wall 4 of the inducer 10 when being compressed in the volute 40. Since the cooling medium can reduce the temperature of the chamber wall 4 of the inducer 10 when flowing in the accommodating chamber 3 of the inducer 10, the temperature of the compressed medium can be reduced to a certain extent, thereby reducing the compression work of the compressor.

[0043] In addition, since the compressor generates less heat when the exhaust temperature is lower under the same intake volume, the deflector 10 provided by the present invention can reduce the exhaust temperature of the compressor, thereby reducing the heat dissipation capacity requirements of the aftercooler, thereby reducing the manufacturing cost of the aftercooler.

[0044] In an existing centrifugal compressor, the thermodynamic process of the compressed medium during compression is as follows: Figure 8aAs shown in the figure, curve P1 represents the isobaric line before the compression of the compression medium (i.e. the initial state of the compression medium), and curve P2 represents the isobaric line after the compression of the compression medium (i.e. the final state of the compression medium), wherein the horizontal coordinate c of point 1 in curve P1 represents the entropy value of the compression medium before compression, and the vertical coordinate of point 1 in curve P1 represents the temperature value of the compression medium before compression; the horizontal coordinate d of point 2 in curve P2 represents the entropy value of the compression medium after compression, and the vertical coordinate of point 2 in curve P2 represents the temperature value of the compression medium after compression; T The point represents the temperature value of the compressed medium after isothermal compression at point 1, and the point 2 T The horizontal axis a of the point represents the entropy value of the compressed medium after isothermal compression at point 1, S The points represent the temperature of the compressed medium after isentropic compression at point 1, and the S The horizontal axis c of the point represents the entropy value of the compressed medium after isentropic compression at point 1. According to the engineering thermodynamics process, Figure 8a The shaded area S 1 (i.e. quadrilateral a2 T 2d) is the compression work required by the compressor to compress the compressed medium from the state at point 1 to the state at point 2.

[0045] In the compressor provided in the present application, the thermodynamic process of the compression medium during compression is as follows: Figure 8b In the figure, curve P1' represents the isobaric line before the compression of the compressed medium (i.e. the initial state of the compressed medium), and curve P2' represents the isobaric line after the compression of the compressed medium (i.e. the final state of the compressed medium), wherein the horizontal coordinate c' of point 1' in curve P1' represents the entropy value of the compressed medium before compression, and the vertical coordinate of point 1' in curve P1' represents the temperature value of the compressed medium before compression; the horizontal coordinate b' of point 2' in curve P2' represents the entropy value of the compressed medium after compression, and the vertical coordinate of point 2' in curve P2' represents the temperature value of the compressed medium after compression; T Point ' represents the temperature value of the compressed medium after isothermal compression at point 1', and point 2 T The horizontal axis a' of the point ' represents the entropy value of the compressed medium after isothermal compression at point 1', S Point ' represents the temperature value of the compressed medium after isentropic compression at point 1', and point 2 S The horizontal axis c' of point ' represents the entropy value of the compressed medium after isentropic compression at point 1'. According to the engineering thermodynamics process, Figure 8b The shaded area S 2 (i.e., by the pentagon a'2 T The two areas formed by the quadrilateral c'1'2d' and '2'1'c' are the compression work required by the compressor to compress the compressed medium from the state at point 1' to the state at point 2'.

[0046] contrast Figure 8aand Figure 8b The shadow area of ​​S 1 >S 2 Therefore, the compression work performed by the compressor provided in the present application on the compression medium is less than the compression work performed by the compressor in the prior art on the same compression medium.

[0047] The difference between the compression work of the compressor provided in the present application and the compression work of the compressor in the prior art is the shaded area S 1 and the shaded area S 2 The difference (i.e. the area of ​​the triangle 2′1′2), and the shaded area S 1 and the shaded area S 2 The difference is the heat of the compressed medium taken away by the cooling medium in the accommodating chamber 3 of the deflector 10, specifically the heat generated by the compressed medium due to internal leakage and viscosity.

[0048] Reference Figure 3 , Figure 4a and Figure 4b As shown, in a preferred embodiment, a guide groove 5 can be provided on the chamber wall 4 (i.e., the inner wall of the accommodating chamber 3) of the guide device 10. After the cooling medium flows into the accommodating chamber 3, it flows along the guide groove 5. The provision of the guide groove 5, on the one hand, can increase the surface area of ​​the cooling medium in contact with the chamber wall 4 (i.e., increase the heat dissipation area), so that the heat exchange between the cooling medium and the chamber wall 4 is more sufficient. In this case, the cooling medium can fully absorb the heat generated by the internal leakage and viscosity of the compressed medium, further reduce the temperature of the compressed medium, reduce the variable process index of the compressor, and reduce the compression work; on the other hand, the guide groove 5 can guide the cooling medium, thereby reducing the flow loss of the cooling medium. In addition, the chamber wall 4 of the guide device 10 and the cooling medium can also absorb and isolate the airflow noise, reduce the decibel value when the compressor is working, and reduce the noise pollution of the compressor.

[0049] Reference Figure 4a As shown, the chamber wall 4 of the deflector 10 includes a side wall 41 , a top wall 42 and a bottom wall 43 .

[0050] Reference Figure 3 , Figure 4a and Figure 4b As shown, in a preferred example, the guide groove 5 includes a plurality of first annular grooves 51 and a plurality of second annular grooves 52. The plurality of first annular grooves 51 are arranged in sequence along the axial direction of the guide 10 on the side wall 41 of the guide 10.

[0051] More preferably, a plurality of second annular grooves 52 are sequentially sleeved on the top wall 42 and / or the bottom wall 43 of the deflector 10 along the radial direction of the deflector 10 .

[0052] With such arrangement, after the cooling medium enters the accommodating chamber 3, it can flow along the groove wall of the first annular groove 51 and the groove wall of the second annular groove 52 respectively, so as to effectively increase the heat exchange area between the cooling medium and the chamber wall 4, further reduce the temperature of the chamber wall 4 of the deflector 10, and thereby reduce the temperature of the compressed medium.

[0053] Preferably, a plurality of first annular grooves 51 and / or a plurality of second annular grooves 52 are continuously arranged on the chamber wall 4 of the deflector 10 to increase the heat exchange area between the cooling medium and the chamber wall 4 of the deflector 10 .

[0054] In more detail, a plurality of first annular grooves 51 may be arranged continuously or at intervals on the side wall 41 of the accommodating chamber 3 along the axial direction of the intake cylinder 2, preferably connected, to increase the heat exchange area between the cooling medium and the side wall 41. Similarly, a plurality of second annular grooves 52 may be continuously or at intervals on the top wall 42 or the bottom wall 43 of the accommodating chamber 3, preferably connected, to further increase the heat exchange area between the cooling medium and the top wall 42 or the bottom wall 43.

[0055] In the prior art, since the impeller rotates very fast (generally greater than 200m / s), the absolute speed of the gaseous compressed medium after the impeller does work is generally between 0.5km / s and 1km / s. When the compressed medium impacts the impeller, a noise of 85dB to 110dB is generated. However, since the existing deflector adopts a single-layer thin-wall structure, its ability to isolate noise is limited, which causes noise pollution when the compressor is working, seriously affecting the auditory system of the operator.

[0056] It should be noted that the cooling medium is usually a liquid (such as water, with a density of 1000KG / m 3 ), when the cooling medium flows in the accommodation space 3 of the guide 10, although the liquid can absorb part of the energy of the sound wave passing through and reduce the intensity of the sound wave. However, due to the limited absorption of the sound wave energy by the liquid, the sound reduction effect of the liquid is limited, and the sound reduction effect of the liquid is not as significant as that of the solid material.

[0057] To better solve the above problems, in a preferred embodiment, the materials of the air intake cover 1 and the air intake cylinder 2 are both set to gray iron or ductile iron, and are integrally formed by casting. The double-layer structure design of the air intake cover 1 and the air intake cylinder 2 of the deflector 10 can further isolate the airflow noise, absorb the noise, reduce the decibel value of the compressor when it is working, and reduce the noise pollution of the compressor.

[0058] Specifically, because gray iron or ductile iron is a high-damping solid material, it has good airtightness and weight, and can well block sound waves. In addition, the porous structure inside the cast iron material allows sound waves to penetrate into its pores. The porous structure is affected by the friction and viscous resistance of air molecules, and can convert sound energy into heat energy, thereby achieving a sound absorption effect. The sound absorption coefficient of this porous material gradually increases from low frequency to high frequency, so it has a better absorption effect on high-frequency sound waves and medium-frequency sound waves, so the deflector 10 can better absorb high-frequency sound waves and medium-frequency sound waves.

[0059] Reference Figure 3 , Figure 4a and Figure 4b As shown, combined with Figure 5 and Figure 6 In a preferred example, the deflector 10 further includes a partition plate 6 disposed in the accommodating chamber 3, and the partition plate 6 divides the accommodating chamber 3 into a plurality of receiving chambers 7. After the cooling medium enters the accommodating chamber 3 from the inlet 11, it can flow in the plurality of receiving chambers 7 in sequence until it flows out from the outlet 12.

[0060] This arrangement, on the one hand, can increase the flow time of the cooling medium in the accommodating chamber 3, so that the cooling medium absorbs more heat, thereby effectively cooling the chamber wall 4 of the deflector 10; on the other hand, the multiple storage chambers 7 can separate and confine the cooling medium in the multiple storage chambers 7. Since the temperature of the cooling medium will rise after absorbing heat, the storage chambers 7 can separate the cooling medium with a higher temperature from the cooling medium with a lower temperature. At this time, the cooling medium with a lower temperature can absorb more heat, thereby increasing the total heat absorbed by the cooling medium.

[0061] Return to reference Figure 2 In a preferred embodiment, the inlet 11 and the outlet 12 are spaced apart on the air intake cover 1. Since the air intake cylinder 2 is an annular structure, when the partition plate 6 is not provided in the accommodating chamber 3, the cooling medium flows in from the inlet 11 and flows out from the outlet 12, and has a first flow path 81 with a rotation angle less than or equal to 180° and a second flow path 82 with a rotation angle greater than or equal to 180°.

[0062] Reference Figure 6 As shown, combined with Figure 2 As an optional example, the partition plate 6 includes a first partition plate 61, which is disposed on the first rotation path 81 and is used to separate the inlet 11 and the outlet 12. The first partition plate 61 can be used to block the cooling medium from flowing on the first rotation path 81, so that the cooling medium can only flow along the second rotation path 82 until it flows out from the outlet 12, thereby increasing the contact area between the cooling medium and the chamber wall 4, thereby reducing the temperature of the compressed medium.

[0063] Of course, in other examples, the first partition plate 61 may not be disposed in the accommodating chamber 3 of the deflector 10 , or the first partition plate 61 may be disposed on the second rotation path 82 . The present application does not limit the location of the first partition plate 61 .

[0064] Further preferably, the partition plate 6 further comprises at least one second partition plate 62 (see Figure 6 In a preferred example, the second partition plate 62 is disposed on the second rotating path 82 and divides the second rotating path 82 into a plurality of receiving chambers 7. A flow channel 9 is disposed between two adjacent receiving chambers 7, and the flow channel 9 is used to allow the cooling medium to flow between the two adjacent receiving chambers 7.

[0065] In such a structure, since two adjacent receiving chambers 7 are connected only by the flow channel 9, the cooling medium needs to sequentially pass through the flow channel 9 between the two receiving chambers 7 during the flow along the second rotating path 82. The second partition plate 62 is arranged in the deflector 10 to slow down the flow speed of the cooling medium on the second rotating path 82, increase the contact time between the cooling medium and the chamber wall 4, enable the cooling medium to cool the chamber wall 4 better, effectively reduce the temperature of the chamber wall 4 of the deflector 10, and further effectively cool the compressed medium.

[0066] Of course, in other examples, the second partition plate 62 may not be disposed in the accommodating chamber 3 of the deflector 10 , or the second partition plate 62 may be disposed on the first rotation path 81 , and the present application does not limit the disposition position of the second partition plate 62 .

[0067] Reference Figure 6 As shown, the number of the second partition plates 62 is preferably multiple, and the multiple second partition plates 62 are arranged in sequence on the second rotation path 82 along the circumference of the intake cylinder 2, that is, the second partition plates 62 are arranged in sequence on at least part of the circumference of the intake cylinder 2.

[0068] Continue to refer to Figure 4a and Figure 4b In some embodiments, the flow channel 9 is disposed between the second partition plate 62 and the chamber wall 4 , and in this case, the flow channel 9 is a gap between the second partition plate 62 and the chamber wall 4 .

[0069] In some other embodiments, a through groove (not shown) may also be provided on the second partition plate 62 to serve as a flow channel between adjacent receiving chambers 7 .

[0070] As an optional solution, on the second rotation path 82, a flow channel 9 is formed between the odd-numbered second partition plates 62 and the top wall 42 of the guide 10 (see Figure 4b ), a flow channel 9 is formed between the even-numbered second partition plates 62 and the bottom wall 43 of the flow guide 10 (refer to Figure 4aThat is, on the second rotation path 82, a first flow channel 9 is formed between the first second partition plate 62 and the top wall 42 of the accommodating chamber 3, a second flow channel 9 is formed between the second second partition plate 62 and the bottom wall 43 of the accommodating chamber 3, and so on.

[0071] At this time, after flowing in from the inlet 11, the cooling medium needs to pass through the flow channel 9 between the first second partition plate 62 and the top wall 42, the flow channel 9 between the second second partition plate 62 and the bottom wall 43, the flow channel 9 between the third partition plate 62 and the top wall 42, the flow channel 9 between the fourth partition plate 62 and the bottom wall 43, and so on, until it flows out of the deflector 10 from the outlet 12.

[0072] As another optional solution, on the second rotation path 82, a flow channel 9 is formed between the odd-numbered second partition plates 62 and the bottom wall 43 of the flow guide 10 (see Figure 4a ), a flow channel 9 is formed between the even-numbered second partition plates 62 and the top wall 42 of the guide 10 (refer to Figure 4b That is, on the second rotation path 82, a first flow channel 9 is formed between the first second partition plate 62 and the bottom wall 43 of the accommodating chamber 3, a second flow channel 9 is formed between the second second partition plate 62 and the top wall 42 of the accommodating chamber 3, and so on.

[0073] At this time, after flowing in from the inlet 11, the cooling medium needs to pass through the flow channel 9 between the first second partition plate 62 and the bottom wall 43, the flow channel 9 between the second second partition plate 62 and the top wall 42, the flow channel 9 between the third partition plate 62 and the bottom wall 43, the flow channel 9 between the fourth partition plate 62 and the top wall 42, and so on, until it flows out of the deflector 10 from the outlet 12.

[0074] In summary, the present invention provides a deflector and a compressor, wherein a accommodating chamber 3 is arranged inside the deflector 10. When the compressor is working, a cooling medium can be introduced into the accommodating chamber 3. The cooling medium can cool the chamber wall 4 of the deflector 10, and then the heat of the compressed medium is timely absorbed through the chamber wall 4 of the deflector 10 to reduce the temperature of the compressed medium, thereby reducing the variable process index of the compressor, reducing the compression work, improving the variable efficiency of the compressor, and reducing energy consumption.

[0075] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the protection scope of the present invention.

Claims

1. A flow guide, characterized in that: It comprises an air intake cover and an air intake cylinder, wherein the air intake cover and the air intake cylinder enclose a containing chamber, and an inlet and an outlet are respectively provided on the air intake cover and / or the air intake cylinder; The cooling medium can flow into the accommodation chamber from the inlet, and flow out of the accommodation chamber from the outlet after exchanging heat with the chamber wall of the guide.

2. The deflector according to claim 1, characterized in that: A guide groove is arranged on the cavity wall of the guide device, and the cooling medium flows along the guide groove after flowing into the accommodating cavity.

3. The deflector according to claim 2, characterized in that: The guide groove includes a plurality of first annular grooves and a plurality of second annular grooves, wherein the plurality of first annular grooves are arranged in sequence on the side wall of the guide along the axial direction of the guide, and / or the plurality of second annular grooves are arranged in sequence on the top wall and / or bottom wall of the guide along the radial direction of the guide.

4. The deflector according to claim 3, characterized in that: A plurality of the first annular grooves and / or a plurality of the second annular grooves are continuously arranged on the chamber wall of the guide device.

5. The deflector according to claim 1, characterized in that: The air intake cover and the air intake cylinder are integrally formed.

6. The flow director according to any one of claims 1 to 5, characterized in that: It also includes a partition plate placed in the accommodating chamber, and the partition plate divides the accommodating chamber into a plurality of storage chambers.

7. The deflector according to claim 6, characterized in that: The inlet and the outlet are spaced apart on the air inlet cover, and the cooling medium has a first rotation path with a rotation angle less than or equal to 180° and a second rotation path with a rotation angle greater than or equal to 180° in the process of flowing in from the inlet and flowing out from the outlet; The partition plate includes a first partition plate disposed on the first rotation path and used to partition the inlet and the outlet.

8. The deflector according to claim 7, characterized in that: The partition plate also includes at least one second partition plate, which is arranged on the second rotation path and divides the second rotation path into a plurality of the storage chambers; a flow channel is arranged between two adjacent storage chambers, and the flow channel is used to allow the cooling medium to flow between the two adjacent storage chambers.

9. The deflector according to claim 8, characterized in that: There are multiple second partition plates, which are sequentially spaced apart along the circumference of the intake cylinder on the second rotation path; the flow channel is provided between the second partition plate and the chamber wall of the deflector.

10. The deflector according to claim 9, characterized in that: On the second rotation path, the flow channel is formed between the odd-numbered second partition plates and the top wall of the flow guide, and the flow channel is formed between the even-numbered second partition plates and the bottom wall of the flow guide. Alternatively, on the second rotation path, the flow channel is formed between the odd-numbered second partition plates and the bottom wall of the deflector, and the flow channel is formed between the even-numbered second partition plates and the top wall of the deflector.

11. A compressor, characterized in that: It comprises an impeller, a diffuser, a volute and a deflector as claimed in any one of claims 1 to 10, wherein the impeller and the diffuser are used to be installed in the volute, and one end of the deflector is used to be installed in the volute and to cooperate with the impeller.

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