Flow guider and compressor

Abstract

The utility model provides a fluid director and a compressor, and belongs to the technical field of compressors, the fluid director comprises a base body, the base body is provided with a silencing cavity and a connecting hole channel, and the connecting hole channel is communicated with the silencing cavity. A plurality of clamping pieces are arranged on the base body and used for being connected with installation positions in a clamped mode. N circulation holes are further formed in the base body and penetrate through the base body in the axis direction of the base body, and N is a natural number larger than 1. The fluid director can be used in the compressor, the fluid director is clamped in the shell of the compressor through the clamping piece, the frequency of gas resonance noise in the shell of the compressor is changed through the structures of the silencing cavity and the connecting hole channel, and the gas resonance noise of the compressor is effectively reduced.

Description

Technical Field

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

[0002] During the operation of the rolling rotor compressor, the discharge of high-pressure gas is often accompanied by strong gas pressure pulsation, which not only poses a challenge to the stable operation of the compressor, but is also the main cause of noise. When the rolling rotor compressor is working, strong gas pressure pulsation will be generated during the exhaust process. The high-pressure gas discharged from the compressor cylinder flows upward from the lower chamber of the motor through the flow channel of the motor rotor assembly to the upper chamber of the motor. Due to the periodic rotation of the motor rotor assembly, gas turbulence will cause eddies to alternate in the rotating area, generating eddy aerodynamic noise. This noise has broadband characteristics, and when its intensity is too high, it will significantly affect the overall noise level of the compressor.

[0003] In addition, the complex cavity structure in the compressor housing also exacerbates the noise problem. These cavities have their own natural frequencies. When the acoustic mode of the cavity is similar to or the same as the mode of the gas pressure pulsation, it will cause gas resonance, further amplifying the noise and transmitting it to the refrigeration system through the exhaust pipe, generating transmission sound.

[0004] It is worth noting that the design of the motor upper cavity, as a key area for gas flow, directly affects the generation and propagation of noise. Figure 1 As shown, in traditional compressor designs, the upper cavity of the motor is often designed as a simple cavity, lacking a special silencer or sound insulation design, which results in higher vortex aerodynamic noise in this area and easily generates gas resonance noise.

[0005] Therefore, it is necessary to improve the existing motor for compressor to overcome the defects of the prior art. Utility Model Content

[0006] In order to overcome the problems existing in the related technology, one of the purposes of the utility model is to provide a deflector, which can be used in a compressor, is connected to the compressor shell through a snap-on part, and changes the frequency of the gas resonance noise in the compressor shell through the structure of the silencer cavity and the connecting channel, thereby effectively reducing the gas resonance noise of the compressor.

[0007] A deflector comprises a base body, on which a muffler cavity and a connecting channel are arranged, and the connecting channel is communicated with the muffler cavity;

[0008] The base is provided with a plurality of clamping parts, which are used to clamp with the installation position; the base is also provided with N flow holes, which penetrate the base along the axial direction of the base, wherein N is a natural number greater than 1.

[0009] The shape and size of the deflector silencer cavity can be optimized and designed according to the operating frequency and noise characteristics of the compressor. At the same time, a connecting hole is opened on the base, and the connecting hole is connected to the silencer cavity to form an airflow channel. After the airflow enters the silencer cavity through the connecting hole, the vibration frequency of the airflow can be changed due to the damping effect of the cavity, thereby reducing the resonance noise. A number of clips are arranged on the outer surface of the base, and the specific shape and number of the clips can be designed according to the installation position of the compressor housing. The clips are fixed to the installation position of the compressor housing by elastic deformation or mechanical locking, so as to ensure the stability and reliability of the deflector during the operation of the compressor. The specific number and distribution of the flow holes can be designed according to the airflow requirements of the compressor. The flow holes not only play a guiding role, but also can further disperse and weaken the vibration energy of the airflow and reduce the noise level.

[0010] In a preferred technical solution of the utility model, the cross section of the base is circular or polygonal, and the clamping parts are evenly distributed on the side wall of the base along the circumference of the base.

[0011] The design of evenly distributing the clamping parts along the circumference of the base makes the force on the deflector in the compressor housing more uniform, avoiding loosening or falling off due to excessive local force, and further improving the overall stability and reliability of the equipment.

[0012] In a preferred technical solution of the utility model, the clamping member includes a mounting seat, a clamping block and a spring, the mounting seat is fixed to the side wall of the base, a mounting groove is provided in the mounting seat, and the opening of the mounting groove faces the outside of the base;

[0013] The card block is arranged in the installation groove, and the card block includes an abutment block and a connection block. The connection block is arranged on one side of the abutment block, and the connection block is arranged at the opening of the installation groove. One end of the abutment block is arranged toward the bottom of the installation groove; the spring is arranged on the connection block, and one end of the spring abuts against the bottom of the installation groove, and the other opposite end abuts against the abutment block.

[0014] In a preferred technical solution of the utility model, a groove is provided on the abutment block, and one end of the spring abuts against the groove.

[0015] The groove designed on the abutment block enables one end of the spring to abut stably in the groove, thereby enhancing the stability of the structure.

[0016] The application of springs and clamps makes the installation of the deflector in the compressor housing more stable. The elastic force of the spring ensures the close contact between the clamp and the bottom of the installation slot, effectively preventing the deflector from loosening or falling off during operation.

[0017] The card connector design not only ensures the stability of the deflector installation, but also makes it easy to disassemble the deflector. When maintenance or replacement is required, just press the card block to easily remove the deflector from the compressor housing, greatly improving the convenience of maintenance.

[0018] In a preferred technical solution of the utility model, the muffler cavity is annularly arranged in the base, and the axis of the muffler cavity coincides with the axis of the base, the volume of the muffler cavity is V0, and the wall thickness of the muffler cavity is l0;

[0019] The cross-sectional area of ​​the connecting channel is S; wherein the target silencing frequency of the silencing cavity is f r for:

[0020]

[0021] Where c is the speed of sound (about 343 m / s in air); S is in m and V0 is in m 3 ; The unit of l0 is m.

[0022] In a preferred technical solution of the utility model, a guide port is provided in the middle of the base body, and the guide port penetrates the base body along the axial direction of the base body.

[0023] The guide port is used to guide the airflow from the lower chamber of the motor through the motor circulation channel into the upper chamber of the motor and be discharged from the exhaust pipe of the compressor. The structure of the guide port and the silencer chamber enables the guide to not only play a role in guiding the flow, but also reduce the operating noise of the compressor.

[0024] In a preferred technical solution of the utility model, a plurality of avoidance positions are provided on the side wall edge of the base, the avoidance positions are recessed inward from the side wall surface of the base, and the avoidance positions are evenly distributed on the side wall of the base along the circumference of the base;

[0025] An upper base plate is arranged on the top of the avoidance position, and a lower base plate is arranged on the top of the avoidance position. The flow holes are arranged on both the upper base plate and the lower base plate.

[0026] In a preferred technical solution of the present utility model, the total area S1 of the flow holes on the upper substrate is larger than the total area S2 of the flow holes on the lower substrate, wherein S1:S2=1.5:1-2:1.

[0027] By setting an avoidance position on the side wall edge of the base body and designing different total area ratios for the flow holes on the upper base plate and the lower base plate, the present application not only saves the material of the guide, but also optimizes the return path of the lubricating oil.

[0028] The total area S1 of the flow holes on the upper substrate is greater than the total area S2 of the flow holes on the lower substrate, which is beneficial for the lubricating oil flowing into the top of the upper cavity of the motor after passing through the deflector to smoothly flow back downward from the flow holes on the upper part of the deflector, and then flow back to the lower part of the compressor through the flow holes on the lower part of the deflector, ultimately reducing the oil content flowing out of the exhaust pipe of the compressor, thereby improving the refrigeration performance and energy efficiency of the compressor and the refrigeration system.

[0029] The second object of the utility model is to provide a compressor, which includes a shell, a motor is arranged in the shell, and the deflector as described above is arranged above the motor, and the deflector is fixed in the shell.

[0030] In a preferred technical solution of the utility model, a slot is provided on the inner wall of the housing, and the deflector is fixed in the slot. The deflector is firmly installed in the compressor housing through the slot, and can remain stable even during high-speed operation without loosening or falling off. The presence of the noise reduction deflector significantly changes the frequency of the gas resonance noise in the compressor housing, dispersing the noise energy into a wider frequency range, thereby reducing the noise peak at a specific frequency.

[0031] The beneficial effects of the utility model are:

[0032] The utility model provides a deflector, which comprises a base body, a muffler cavity and a connecting hole are arranged on the base body, and the connecting hole is communicated with the muffler cavity. A plurality of clamping parts are arranged on the base body, and the clamping parts are used for clamping with the installation position.

[0033] The design of the clip allows the deflector to be firmly clipped into the compressor housing, avoiding the problem of loosening or falling off caused by vibration or airflow impact, and improving the overall stability and reliability of the equipment. During the operation of the compressor, the airflow from the lower chamber of the motor through the motor circulation channel into the upper chamber of the motor will enter the muffler chamber of the deflector through the connecting channel. The deflector can optimize the gas flow channel of the upper chamber of the motor of the compressor housing. Through the structural design of the muffler chamber and the connecting channel, it can change the frequency of the gas resonance noise in the compressor housing, so that the noise energy is dispersed into a wider frequency range, thereby reducing the noise peak at a specific frequency. N flow holes are also provided on the substrate, and the flow holes penetrate the substrate along the axial direction of the substrate, where N is a natural number greater than 1. The setting of the flow holes further disperses and weakens the vibration energy of the airflow, thereby effectively reducing the resonance noise of the compressor gas.

[0034] The present application also provides a compressor including the above-mentioned deflector, which optimizes the airflow above the motor in the shell through the deflector, can change the frequency of the gas resonance noise in the compressor shell, effectively reduce the eddy noise and gas resonance noise of the compressor, and improve the performance and energy efficiency of the compressor and the refrigeration system; in addition, the design of the deflector ensures that after the lubricating oil flowing out of the circulation channel of the motor rotor assembly enters the upper cavity of the motor, most of the oil is blocked by the lower part of the deflector and flows back to the lower part of the compressor, ultimately reducing the oil content flowing out of the exhaust pipe of the compressor, thereby improving the refrigeration performance and energy efficiency of the compressor and the refrigeration system. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the upper chamber of the existing compressor without a deflector provided by the utility model;

[0036] Figure 2 It is a structural schematic diagram of the upper chamber of the compressor with a deflector provided by the utility model of the present application;

[0037] Figure 3 It is a structural schematic diagram of a flow deflector provided in an embodiment of the utility model;

[0038] Figure 4 It is a three-dimensional diagram of the deflector provided in the embodiment of the utility model when the block is not installed;

[0039] Figure 5 It is a schematic diagram of the interior of the deflector provided in the embodiment of the utility model when no card block is installed;

[0040] Figure 6 is a schematic diagram of the internal cross section of the deflector provided in the embodiment of the utility model when the block is not installed;

[0041] Figure 7 It is a schematic diagram of a card block provided in an embodiment of the utility model;

[0042] Figure 8 It is a principle diagram of the silencing frequency of the volume of the silencing cavity and the area of ​​the connecting channel provided in the embodiment of the utility model;

[0043] Fig. 9 It is a simulation diagram of the oil volume fraction distribution when there is no deflector in the upper chamber of the compressor motor provided in the embodiment of the utility model;

[0044] Fig.10 It is a simulation diagram of the oil volume fraction distribution when a deflector is provided in the upper chamber of the compressor motor provided in an embodiment of the utility model.

[0045] Reference numerals:

[0046] 1. Shell; 2. Base; 21. Muffler chamber; 22. Connecting channel; 23. Upper base plate; 24. Lower base plate; 25. Avoidance position; 26. Flow hole; 27. Diversion port; 3. Snap-on; 31. Block; 311. Abutment block; 312. Connecting block; 313. Groove; 32. Mounting seat; 33. Mounting slot; 34. Spring. DETAILED DESCRIPTION

[0047] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0048] When the rolling rotor compressor is working, strong gas pressure pulsation will be generated during the exhaust process. The high-pressure gas discharged from the compressor cylinder flows upward from the motor lower chamber through the flow channel of the motor rotor assembly to the motor upper chamber. Due to the periodic rotation of the motor rotor assembly, gas turbulence will cause eddies to alternate in the rotating area, generating eddy aerodynamic noise. This noise has broadband characteristics, and when its intensity is too high, it will significantly affect the overall noise level of the compressor.

[0049] In addition, the complex cavity structure in the compressor housing also exacerbates the noise problem. These cavities have their own natural frequencies. When the acoustic mode of the cavity is similar to or the same as the mode of the gas pressure pulsation, it will cause gas resonance, further amplifying the noise and transmitting it to the refrigeration system through the exhaust pipe, generating transmission sound.

[0050] It is worth noting that the design of the upper motor cavity, as a key area for gas flow, directly affects the generation and propagation of noise. However, in traditional compressor design, the upper motor cavity is often designed as a simple cavity, lacking a special noise reduction or sound insulation design, which leads to high vortex aerodynamic noise in this area and easily generates gas resonance noise.

[0051] Based on this, the present application provides a deflector.

[0052] Example 1

[0053] like Figure 1-Figure 8 As shown, a deflector provided in this embodiment includes a base body 2, on which a muffler cavity 21 and a connecting channel 22 are provided, and the connecting channel 22 is communicated with the muffler cavity 21;

[0054] The base body 2 is provided with a plurality of clamping parts 3, and the clamping parts 3 are used to clamp with the installation position; the base body 2 is also provided with N flow holes 26, and the flow holes 26 penetrate the base body 2 along the axial direction of the base body 2, wherein N is a natural number greater than 1.

[0055] In practical applications, the substrate 2 of the present application is made of high-strength, corrosion-resistant materials, such as stainless steel or aluminum alloy. The shape of the substrate 2 can be designed according to the specific structure of the compressor to ensure good matching with the compressor housing 1.

[0056] In this embodiment, the cross section of the base body 2 is circular or polygonal, and the clamping parts 3 are evenly distributed on the side wall of the base body 2 along the circumference of the base body 2 .

[0057] The design of evenly distributing the clamping parts 3 along the circumference of the base 2 makes the force on the deflector in the compressor housing 1 more uniform, avoiding the problem of loosening or falling off due to excessive local force, and further improving the overall stability and reliability of the equipment.

[0058] The shape and size of the deflector muffler cavity 21 can be optimized according to the operating frequency and noise characteristics of the compressor. At the same time, a connecting hole 22 is opened on the base 2, and the connecting hole 22 is connected to the muffler cavity 21 to form an airflow channel. After the airflow enters the muffler cavity 21 through the connecting hole 22, the vibration frequency of the airflow can be changed due to the damping effect of the cavity, thereby reducing the resonance noise.

[0059] In practical applications, the connecting channel 22 can be designed to be one or more, so that the airflow can better enter the muffler cavity.

[0060] A plurality of clips 3 are provided on the outer surface of the base 2, and the specific shape and number of the clips 3 can be designed according to the installation position of the compressor housing 1. In this embodiment, the clips 3 are fixed to the installation position of the compressor housing 1 by elastic deformation or mechanical locking, etc., to ensure the stability and reliability of the deflector during the operation of the compressor. The specific number and distribution of the flow holes 26 on the base 2 can be designed according to the airflow requirements of the compressor. The flow holes 26 not only play a role in guiding flow, but also can further disperse and weaken the vibration energy of the airflow and reduce the noise level.

[0061] In addition, in the existing compressor, the air flow passes through the upper chamber of the motor of the shell 1 and is directly discharged from the exhaust pipe, so that after the lubricating oil at the bottom of the compressor is discharged into the upper chamber of the motor, most of it is directly discharged from the exhaust pipe. The oil content of the exhaust pipe of the compressor is relatively high, resulting in reduced energy efficiency of the compressor and the refrigeration system.

[0062] The entire deflector of the present application is installed above the motor of the compressor housing 1, and can block the lubricating oil flowing out of the circulation channel of the motor rotor assembly. Most of the lubricating oil is blocked by the lower part of the deflector and flows back to the lower part of the compressor, ultimately reducing the oil content flowing out of the exhaust pipe and improving the refrigeration performance and energy efficiency of the compressor and refrigeration system.

[0063] Example 2

[0064] This embodiment is improved on the basis of embodiment 1.

[0065] like Figure 1-Figure 8 As shown, in this embodiment, a specific implementation structure of the clamping member 3 is provided.

[0066] The clamping member 3 includes a mounting seat 32, a clamping block 31 and a spring 34. The mounting seat 32 is fixed to the side wall of the base 2. A mounting groove 33 is provided in the mounting seat 32. The opening of the mounting groove 33 faces the outside of the base 2.

[0067] The card block 31 is arranged in the installation groove 33, and the card block 31 includes a contact block 311 and a connecting block 312. The connecting block 312 is arranged on one side of the contact block 311, and the connecting block 312 is arranged at the opening of the installation groove 33. One end of the contact block 311 is arranged toward the bottom of the installation groove 33; the spring 34 is arranged on the connecting block 312, and one end of the spring 34 is abutted against the bottom of the installation groove 33, and the other end opposite to the contact block 311 is abutted.

[0068] The mounting seat 32 is fixed to the side wall of the base 2 to provide a stable support for the block 31. The mounting groove 33 provided in the mounting seat 32 is cleverly opened toward the outside of the base 2 to facilitate the installation and operation of the block 31.

[0069] The block 31 is composed of an abutment block 311 and a connection block 312. One end of the abutment block 311 faces the bottom of the mounting groove 33, while the connection block 312 is located at the opening of the mounting groove 33 and is closely connected to the abutment block 311. Specifically, the abutment block 311 and the connection block 312 can be an integrated structure. In actual applications, the abutment block 311 is used to connect with the compressor housing 1. In order to improve the installation stability of the deflector, an anti-slip groove can be provided on the side where the abutment block 311 connects with the compressor housing 1. After the deflector is installed in the compressor housing 1, it can be locked in the compressor housing 1 by the friction between the abutment block 311 and the compressor housing 1, thereby achieving the fixation of the deflector.

[0070] In a more preferred embodiment, the deflector may be fixed to the compressor housing 1 by bolts or welded in the compressor housing 1 in addition to being fixed by the clamping block.

[0071] More preferably, a groove 313 is provided on the abutting block 311 , and one end of the spring 34 abuts against the groove 313 .

[0072] The groove 313 designed on the abutment block 311 can make one end of the spring 34 abut stably in the groove 313, thereby enhancing the stability of the structure. The two ends of the spring 34 are respectively tightly abutted against the bottom of the mounting groove 33 and the abutment block 311, thereby enhancing the stability of the structure.

[0073] The application of the spring 34 and the block 31 makes the installation of the deflector in the compressor housing 1 more stable. The elastic force of the spring 34 ensures the close contact between the block 31 and the bottom of the installation groove 33, effectively preventing the deflector from loosening or falling off during operation.

[0074] The design of the clamping piece 3 not only ensures the stability of the deflector installation, but also makes the deflector easy to disassemble. When maintenance or replacement is required, the deflector can be easily removed from the compressor housing 1 by simply pressing the clamping piece 31, which greatly improves the convenience of maintenance.

[0075] In a more specific embodiment, four clamping members 3 may be provided on the base body 2 , and the four clamping members 3 are evenly distributed on the side wall of the base body 2 along the axial direction of the base body 2 .

[0076] In addition, the present application also provides a method for determining the elastic coefficient of the spring 34:

[0077] When determining the elastic coefficient (also called stiffness coefficient) of the spring 34, multiple factors need to be considered comprehensively, including the operating conditions of the compressor, the weight of the deflector, the required preload force, the maximum allowable displacement, and the vibration frequency.

[0078] First, obtain the size and shape of the compressor housing 1, the weight and size of the deflector, and the vibration frequency and amplitude when the compressor is running. The spring 34 needs to provide sufficient preload to ensure that the deflector remains stable when the compressor is running. The preload should be sufficient to resist the vibration and impact during the operation of the compressor, but should not be too large to avoid causing unnecessary stress on the housing 1 or the deflector. Then, based on the design and operating requirements of the compressor, determine the maximum allowable displacement of the deflector relative to the housing 1. The spring 34 of the present application can be a compression spring 34. Finally, use Hooke's law (F=kx, where F is force, k is the elastic coefficient, and x is displacement) to calculate the required elastic coefficient. Taking into account the preload and the maximum allowable displacement, the required elastic coefficient range can be estimated.

[0079] In addition, before actual application, simulation software or an experimental device can be used to test the performance of the selected spring 34, and the elastic coefficient can be adjusted according to the test results to ensure that the design requirements are met.

[0080] When selecting spring 34, safety factors such as fatigue life, corrosion resistance, temperature range, etc. should also be considered.

[0081] Example 3

[0082] This embodiment provides a specific relationship between the structure of the muffler chamber 21 and the muffler frequency.

[0083] like Figure 1-Figure 8 As shown, in this embodiment, the muffler cavity 21 is arranged in a ring shape in the base 2, and the axis of the muffler cavity 21 coincides with the axis of the base 2, the volume of the muffler cavity 21 is V0, and the wall thickness of the muffler cavity 21 is l0;

[0084] The cross-sectional area of ​​the connecting channel 22 is S; wherein the target muffler frequency fr of the muffler cavity 21 is:

[0085] Where c is the speed of sound (about 343 m / s in air); S is in m and V0 is in m 3 ; The unit of l0 is m. Specifically, the size of S is related to the width of the connecting channel, that is, the diameter d of the connecting channel 22.

[0086] From the above formula, it can be known that the silencing frequency is proportional to the area of ​​the connecting channel 22 and inversely proportional to the square root of the product of the volume and the wall thickness of the silencing cavity 21. Therefore, by adjusting these parameters, the silencing cavity 21 with a specific silencing frequency can be designed.

[0087] It should be noted that this formula is based on idealized models and assumptions. More factors need to be considered in practical applications, such as the shape of the anechoic cavity, the acoustic properties of the material, ambient temperature and pressure, etc.

[0088] In a more preferred embodiment, the inner wall of the muffler cavity is irregularly shaped, such as the inside of the muffler cavity can be S-shaped, or provided with irregular protrusions. In addition, the surface of the inner wall of the muffler cavity is not smooth to improve the muffler effect.

[0089] Example 4

[0090] like Figure 1-Figure 8 As shown, in this embodiment, a guide port 27 is provided in the middle of the base body 2 , and the guide port 27 penetrates the base body 2 along the axial direction of the base body 2 .

[0091] The flow guide port is arranged in the middle of the base body 2 .

[0092] The guide port 27 is used to guide the airflow from the lower chamber of the motor through the motor circulation channel into the upper chamber of the motor and discharge it from the exhaust port of the compressor. The structure of the guide port 27 and the silencer chamber enables the guide to both guide the air and reduce the operating noise of the compressor.

[0093] The provision of the guide port 27 enables the airflow entering the upper chamber of the motor from the lower chamber of the motor to be discharged more smoothly, thereby reducing the turbulence and eddy current of the airflow inside the compressor, thereby improving the efficiency of the compressor.

[0094] In addition, the wall surface of the guide port 27 of the present application should be smooth to improve the guiding effect on the airflow.

[0095] The coordinated structure of the silencer chamber 21 and the guide port 27 can achieve both the satisfaction of gas guide and the effective change of the frequency of the gas resonance noise in the compressor housing 1, so that the noise energy is dispersed into a wider frequency range, thereby reducing the noise peak at a specific frequency and significantly improving the working environment of the compressor.

[0096] In this embodiment, a plurality of avoidance positions 25 are provided on the side wall edge of the base 2. The avoidance positions 25 are recessed inward from the side wall surface of the base 2. The avoidance positions 25 are evenly distributed on the side wall of the base 2 along the circumference of the base 2.

[0097] An upper base plate 23 is disposed on the top of the avoidance position 25 , and a lower base plate 24 is disposed on the top of the avoidance position 25 . The flow holes 26 are disposed on both the upper base plate 23 and the lower base plate 24 .

[0098] Specifically, the structures of the upper substrate 23 and the lower substrate 24 are both circular, and the rear flow hole 26 penetrates the upper substrate 23 and the lower substrate 24 .

[0099] In a specific implementation manner, the clamping member 3 may be disposed between two adjacent avoidance positions 25 .

[0100] In this embodiment, the total area S1 of the flow holes 26 on the upper substrate 23 is greater than the total area S2 of the flow holes 26 on the lower substrate 24 , wherein S1:S2=1.5:1-2:1.

[0101] The design of the area ratio of S1 to S2 can ensure that the flow space can satisfy the air discharge while allowing as much lubricating oil as possible to flow back to the bottom of the compressor.

[0102] It should be noted that the flow holes 26 on the upper substrate 23 and the flow holes 26 on the lower substrate 24 of the present application are staggered with each other in the vertical direction.

[0103] By setting an avoidance position 25 on the side wall edge of the base 2 and designing different total area ratios for the flow holes 26 on the upper base plate 23 and the lower base plate 24, the present application not only saves the material of the deflector, but also optimizes the return path of the lubricating oil.

[0104] The total area S1 of the flow holes 26 on the upper base plate 23 is greater than the total area S2 of the flow holes 26 on the lower base plate 24, which is beneficial for the lubricating oil flowing into the top of the upper cavity of the motor after passing through the deflector to smoothly flow back downward from the flow holes 26 at the top of the deflector, and then flow back to the lower part of the compressor through the flow holes 26 at the bottom of the deflector, ultimately reducing the oil content flowing out of the exhaust pipe of the compressor, thereby improving the refrigeration performance and energy efficiency of the compressor and the refrigeration system.

[0105] See also Fig. 9 , Fig.10 , Fig. 9 , Fig.10 The simulation results of the oil volume fraction distribution diagram of the upper chamber of the motor of one of the compressors without and with a deflector are shown in Figure 2. The results show that compared with the compressor without a deflector, the oil volume fraction distribution of the entire upper chamber of the compressor with a deflector is smaller. The oil content of the exhaust port without a deflector is 13.6%, and the oil content of the exhaust port with a deflector is 11.8%. The oil content of the exhaust port with a deflector is significantly improved, effectively improving the performance and energy efficiency of the compressor.

[0106] Example 5

[0107] like Figure 1-Figure 8 As shown, this embodiment provides a compressor, including a shell 1, in which a motor is arranged, and above the motor, a deflector as described above is arranged, and the deflector is fixed in the shell 1.

[0108] The deflector mainly guides and controls the direction of airflow in the compressor.

[0109] The present application also provides a compressor including the above-mentioned deflector, which optimizes the airflow above the motor in the shell 1 through the deflector, can change the frequency of the gas resonance noise in the compressor shell 1, effectively reduce the eddy noise and gas resonance noise of the compressor, and improve the performance and energy efficiency of the compressor and the refrigeration system; in addition, the design of the deflector ensures that after the lubricating oil flowing out of the circulation channel of the motor rotor assembly enters the upper cavity of the motor, most of the oil is blocked by the lower part of the deflector and flows back to the lower part of the compressor, ultimately reducing the oil content flowing out of the compressor exhaust pipe, thereby improving the refrigeration performance and energy efficiency of the compressor and the refrigeration system.

[0110] In a more preferred implementation of this embodiment, a slot is provided on the inner wall of the housing 1, and the deflector is fixed in the slot. The deflector is firmly installed in the compressor housing 1 through the slot, and can remain stable even during high-speed operation without loosening or falling off.

[0111] The shape of the slot is adapted to the shape of the outer wall of the deflector so that the deflector can be snapped into the compressor housing 1. Specifically, the slot can be formed by a strip protruding from the inner wall of the compressor housing 1, and the height of the strip can be 1 cm.

[0112] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0113] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A flow deflector, comprising a base (2), characterized in that: The base body (2) is provided with a muffler cavity (21) and a connecting hole (22), and the connecting hole (22) is communicated with the muffler cavity (21); The base (2) is provided with a plurality of clamping parts (3), and the clamping parts (3) are used to clamp with the installation position; the base (2) is also provided with N flow holes (26), and the flow holes (26) penetrate the base (2) along the axial direction of the base (2), wherein N is a natural number greater than 1.

2. The deflector according to claim 1, characterized in that: The cross section of the base (2) is circular or polygonal, and the clamping parts (3) are evenly distributed on the side wall of the base (2) along the circumference of the base (2).

3. The deflector according to claim 2, characterized in that: The clamping member (3) comprises a mounting seat (32), a clamping block (31) and a spring (34); the mounting seat (32) is fixed to the side wall of the base (2); a mounting groove (33) is provided in the mounting seat (32); and the opening of the mounting groove (33) faces the outside of the base (2); The clamping block (31) is arranged in the mounting groove (33), and the clamping block (31) comprises an abutting block (311) and a connecting block (312), wherein the connecting block (312) is arranged on one side of the abutting block (311), the connecting block (312) is arranged at the opening of the mounting groove (33), and one end of the abutting block (311) is arranged toward the bottom of the mounting groove (33); the spring (34) is arranged on the connecting block (312), and one end of the spring (34) abuts against the bottom of the mounting groove (33), and the other end opposite to the spring (34) abuts against the abutting block (311).

4. The deflector according to claim 3, characterized in that: The abutment block (311) is provided with a groove (313), and one end of the spring (34) abuts against the groove (313).

5. The deflector according to any one of claims 1 to 4, characterized in that: The muffler cavity (21) is arranged in a ring shape in the base (2), and the axis of the muffler cavity (21) coincides with the axis of the base (2), the volume of the muffler cavity (21) is V0, and the wall thickness of the muffler cavity (21) is l0; The cross-sectional area of ​​the connecting channel (22) is S; wherein the target silencing frequency fr of the silencing chamber (21) is: Where c is the speed of sound in m / s; S is in m, and V0 is in m 3 ; The unit of l0 is m.

6. The deflector according to claim 2, characterized in that: A flow guide port (27) is provided in the middle of the base (2), and the flow guide port (27) penetrates the base (2) along the axial direction of the base (2).

7. The deflector according to claim 1, characterized in that: The side wall edge of the base (2) is provided with a plurality of avoidance positions (25), the avoidance positions (25) are recessed inward from the side wall surface of the base (2), and the avoidance positions (25) are evenly distributed on the side wall of the base (2) along the circumference of the base (2); An upper base plate (23) is provided on the top of the avoidance position (25), a lower base plate (24) is provided on the top of the avoidance position (25), and the flow holes (26) are provided on both the upper base plate (23) and the lower base plate (24).

8. The deflector according to claim 7, characterized in that: The total area S1 of the flow holes (26) on the upper substrate (23) is greater than the total area S2 of the flow holes (26) on the lower substrate (24), wherein S1:S2=1.5:1-2:

1.

9. A compressor, comprising a housing (1), wherein a motor is arranged in the housing (1), characterized in that: A deflector as claimed in any one of claims 1 to 8 is arranged above the motor, and the deflector is fixed in the housing (1).

10. The compressor according to claim 9, characterized in that: A slot is provided on the inner wall of the housing (1), and the deflector is fixed in the slot.

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