Compressor and refrigeration equipment

Abstract

The utility model discloses a compressor and refrigeration equipment, and relates to the technical field of compressors. The compressor comprises a shell, a compression mechanism and a pulsation attenuation assembly, and the shell is provided with an exhaust port; the compression mechanism is arranged in the shell; the pulsation attenuation assembly is arranged in the shell, the pulsation attenuation assembly and the shell form a silencing cavity, the silencing cavity is located between the compression mechanism and the exhaust port, and the exhaust port communicates with the silencing cavity; the pulsation attenuation assembly is provided with a gas guide channel communicating with the silencing cavity, and the gas guide channel is used for guiding gas exhausted by the compression mechanism into the silencing cavity. According to the technical scheme, exhaust pressure pulsation of the compressor can be improved, and noise is lowered.

Description

Technical Field

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

[0002] In the related art, compressors are widely used in refrigeration equipment such as air conditioners and refrigerators.

[0003] During the operation of the compressor, due to the periodic intake, compression and exhaust, it will produce large pressure pulsations in the working process. The pressure pulsations will be transmitted along the exhaust pipe and the refrigerant pipe to the refrigeration equipment such as the air conditioner indoor unit, causing the overall pipeline vibration of the refrigeration equipment and causing large noise problems. Utility Model Content

[0004] The main purpose of the utility model is to provide a compressor, aiming to improve the exhaust pressure pulsation of the compressor and reduce noise.

[0005] To achieve the above-mentioned purpose, the compressor proposed by the utility model comprises:

[0006] A housing having an exhaust port;

[0007] A compression mechanism is disposed in the housing; and

[0008] A pulsation attenuation component is disposed in the housing and forms a silencer chamber with the housing, wherein the silencer chamber is located between the compression mechanism and the exhaust port, and the exhaust port is communicated with the silencer chamber;

[0009] The pulsation attenuation component has an air guide channel connected to the muffler chamber, and the air guide channel is used to guide the gas discharged by the compression mechanism into the muffler chamber.

[0010] In one embodiment of the present application, the pulsation attenuation component is connected to the inner wall of the shell to separate the inner cavity of the shell into the silencing chamber and the exhaust chamber, the compression mechanism is arranged in the exhaust chamber, and the air guide channel connects the exhaust chamber and the silencing chamber.

[0011] In one embodiment of the present application, the pulsation attenuation component includes a partition arranged above the compression mechanism, the partition is connected to the inner wall of the shell, the silencer chamber and the exhaust chamber are respectively arranged on the upper and lower sides of the partition; the air guide channel is arranged on the partition.

[0012] In one embodiment of the present application, the air guide channel is an air guide tube;

[0013] The partition is provided with a mounting hole, and the air guide pipe is assembled in the mounting hole.

[0014] In one embodiment of the present application, the air duct passes through the partition, and the air outlet end of the air duct extends into the muffler cavity.

[0015] In one embodiment of the present application, the length of the air duct extending into the silencer cavity is defined as h1, satisfying: h1<30 mm.

[0016] In one embodiment of the present application, the air guide tube extends in a curved shape.

[0017] In one embodiment of the present application, the air guide channel is an air flow channel formed inside the partition.

[0018] In one embodiment of the present application, the partition includes:

[0019] A bottom shell connected to the inner wall of the shell, the bottom shell being provided with a first air hole communicating with the exhaust cavity; and

[0020] The upper cover is arranged on the bottom shell and encloses the bottom shell to form the air guide channel. The upper cover is provided with a second air hole connecting the air guide channel and the muffler cavity.

[0021] In one embodiment of the present application, the partition further includes a guide rib provided on the bottom shell and / or the upper cover, and the side wall of the guide rib, the inner wall of the bottom shell and the inner wall of the upper cover enclose the air guide channel.

[0022] In one embodiment of the present application, the air guide channel extends in a spiral shape;

[0023] And / or, the guide rib extends in a spiral shape;

[0024] And / or, the first air hole and the second air hole are staggered.

[0025] In one embodiment of the present application, the flow length of the air guide channel is defined as L, which satisfies: 50 mm <L<300mm;

[0026] And / or, the compressor is provided with an exhaust pipe installed at the exhaust port, the inner diameter of the exhaust pipe is defined as d2, the inner diameter of the air guide passage is defined as d1, and the following condition is satisfied: d1≥d2;

[0027] And / or, the exhaust port and the air outlet end of the air guide channel are respectively arranged on the upper and lower sides of the silencing cavity, and the height dimension of the silencing cavity is H, satisfying: H≥10mm.

[0028] In one embodiment of the present application, the partition is provided with an escape opening for the lead wire to pass through.

[0029] In one embodiment of the present application, the upper surface of the partition is provided with a middle area and a surrounding area, and the middle area is higher than the surrounding area;

[0030] The avoidance opening is arranged at the edge of the partition; and / or, a plurality of oil return holes are arranged in the surrounding area.

[0031] In one embodiment of the present application, the edge of the partition has a flange, and the flange is fixedly connected to the inner wall of the shell.

[0032] To achieve the above objectives, the present application also provides a refrigeration device, including the above compressor.

[0033] In the compressor of the technical solution of the utility model, a pulsation attenuation component is arranged in the shell, and the pulsation attenuation component and the shell form a silencer chamber connected to the exhaust port. At the same time, the pulsation attenuation component also has an air guide channel connected to the silencer chamber, so that the gas discharged from the compression mechanism will flow through the air guide channel, the silencer chamber and the exhaust port in sequence when discharged outward, and the air guide channel, the silencer chamber and the exhaust port form a structure similar to an expansion silencer, which can play a role in attenuating pulsation and silencing the exhaust gas flow when it flows outward, thereby achieving the purpose of attenuating the exhaust pressure pulsation of the compressor and reducing the noise transmitted from the compressor exhaust to the external pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0035] Figure 1 This is a schematic structural diagram of an embodiment of a compressor of the utility model;

[0036] Figure 2 for Figure 1 A schematic diagram of the structure of the pulsation attenuation component of the embodiment;

[0037] Figure 3 for Figure 1 A perspective structural diagram of a pulsation attenuation assembly in an embodiment;

[0038] Figure 4 for Figure 1 A schematic diagram of the structure of the partition in the embodiment;

[0039] Figure 5 for Figure 1 A schematic diagram of the structure of the airway in the embodiment;

[0040] Figure 6 This is a structural schematic diagram of another embodiment of the compressor of the utility model;

[0041] Figure 7 for Figure 6 A schematic diagram of the structure of the pulsation attenuation component of the embodiment;

[0042] Figure 8 for Figure 6 A perspective structural diagram of a pulsation damping assembly in an embodiment;

[0043] Fig. 9 for Figure 7 A schematic diagram of the structure of the bottom shell and the guide ribs in the embodiment;

[0044] Fig.10 for Figure 7 A schematic diagram of the structure of the upper cover in the embodiment;

[0045] Fig.11 for Figure 1 A comparison diagram of exhaust pulsation pressure of the compressor of the embodiment and the compressor without a pulsation attenuation component arranged inside the shell under the condition of an operating frequency of 90 Hz;

[0046] Fig.12 for Figure 1 A comparison chart of noise improvement / deterioration between the compressor of the embodiment and the compressor without a pulsation damping component disposed inside the casing under an operating frequency of 90 Hz.

[0047] Description of Figure Numbers:

[0048] 100 housing; 101 exhaust port; 110 upper housing; 120 lower housing;

[0049] 200 compression mechanism; 210 motor assembly; 220 pump body assembly;

[0050] 300 pulsation attenuation component; 301 air guide channel; 310 partition; 311 bottom shell; 312 upper cover; 313 guide rib; 314 flange; 310a mounting hole; 310b first air hole; 310c second air hole; 310d avoidance port; 320 air guide pipe; 320a air outlet;

[0051] 400 exhaust pipe;

[0052] A. Silencer chamber;

[0053] B exhaust chamber.

[0054] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0056] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0057] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or a option in which both A and B are satisfied.

[0058] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0059] During the operation of the compressor, due to the periodic intake, compression and exhaust, it will produce large pressure pulsations in the working process. The pressure pulsations will be transmitted along the exhaust pipe and refrigerant pipe to the refrigeration equipment such as the air conditioner indoor unit, causing the overall pipeline vibration of the refrigeration equipment and causing large noise problems.

[0060] Based on this, the utility model proposes a compressor, which aims to attenuate air flow pulsation and reduce noise by constructing a silencer chamber A in the compressor housing 100. It can be understood that the compressor of this embodiment may not be limited to a specific type of compressor, for example, it may be a rotary compressor or a scroll compressor, etc. For ease of understanding, the rotary compressor is used as an example for explanation below.

[0061] In the embodiment of the present utility model, Figure 1 , Figure 2 , Figure 6 as well as Figure 7As shown, the compressor includes a housing 100 , a compression mechanism 200 and a pulsation damping assembly 300 .

[0062] The shell 100 is provided with an exhaust port 101; the compression mechanism 200 is arranged in the shell 100; the pulsation attenuation component 300 is arranged in the shell 100 and forms a silencer chamber A with the shell 100, the silencer chamber A is located between the compression mechanism 200 and the exhaust port 101, and the exhaust port 101 is connected to the silencer chamber A; the pulsation attenuation component 300 has an air guide channel 301 connected to the silencer chamber A, and the air guide channel 301 is used to introduce the gas discharged from the compression mechanism 200 into the silencer chamber A.

[0063] It can be understood that the compression mechanism 200 of this embodiment includes a motor assembly 210 and a pump body assembly 220. The motor assembly 210 is used to drive the pump body assembly 220 to operate. The pump body assembly 220 has a compression chamber to achieve periodic actions of suction, compression and exhaust of the refrigerant. The gas discharged through the compression mechanism 200 passes through the inner cavity of the shell 100 and is discharged from the exhaust port 101 to the pipeline of the refrigeration equipment. In this embodiment, by arranging a pulsation attenuation component 300 in the shell 100, the pulsation attenuation component 300 and the shell 100 form a silencer chamber A connected to the exhaust port 101, and the pulsation attenuation component 300 also has an air guide channel 301 connected to the silencer chamber A, so that the exhaust gas flow will flow through the air guide channel 301, the silencer chamber A and the exhaust port 101 in sequence when it is discharged outward. It can be understood that the air guide channel 301, the silencer chamber A and the exhaust port 101 form an expansion muffler structure, so that when the gas discharged from the compression mechanism 200 enters the silencer chamber A through the air guide channel 301, the acoustic impedance will change due to the change in the cross section of the air guide channel 301 and the silencer chamber A, so that when the exhaust gas flows outward, partial sound wave reflection and interference will occur at the interface where the acoustic impedance suddenly changes, thereby achieving a certain effect of silencing and attenuating pulsation. In addition, when the cross section of the silencer chamber A and the exhaust port 101 changes, a sudden change in acoustic impedance will also occur, and the exhaust gas flow in the silencer chamber A will also have a certain effect of silencing and attenuating pulsation when it is discharged from the exhaust port 101. In this way, the purpose of attenuating the pulsation of the exhaust gas flow of the compressor and reducing noise can be achieved.

[0064] It should be noted that the pulsation attenuation component 300 of the present embodiment is arranged inside the shell 100, and the purpose of reducing pulsation and noise is achieved before the refrigerant gas is discharged into the refrigerant pipeline. Compared with the solution of setting a muffler on the external pipeline of the compressor in the related art, the present embodiment does not need to additionally set a muffler on the outdoor unit pipeline, and can also avoid setting welding points on the external pipeline, thereby reducing the risk of refrigerant leakage.

[0065] The pulsation damping component 300 and the housing 100 form a silencer cavity A. It can be understood that the silencer cavity A may be formed by the outer wall of the pulsation damping component 300 and the inner wall of the housing 100, or the pulsation damping component 300 itself is provided with the silencer cavity A, or the pulsation damping component 300 and the housing 100 are structurally matched to form the silencer cavity A, etc. The specific method of forming the silencer cavity A is not limited here.

[0066] In practical applications, the specific structure of the pulsation attenuation component 300 can be determined according to actual conditions, for example, it can be a combination structure of a plate structure + an air guide tube, or a box structure with a built-in air guide channel 301, or a cylinder structure with different pipe diameters, etc. The specific structure is not limited here.

[0067] In practical applications, the gas guide channel 301 may be a gas flow channel formed in the pulsation attenuation component 300, or may be a tube structure. The flow cross-sectional shape of the gas guide channel 301 may be determined according to actual conditions, for example, it may be a rectangle, a semicircle, a trapezoid, a triangle or other shapes, etc. The extended shape of the gas guide channel 301 may be a curved shape, a straight tube shape, a spiral shape or other shapes, etc.

[0068] In the compressor of the technical solution of the utility model, a pulsation attenuation component 300 is arranged in the shell 100, and the pulsation attenuation component 300 and the shell 100 form a silencer chamber A connected to the exhaust port 101. At the same time, the pulsation attenuation component 300 also has an air guide channel 301 connected to the silencer chamber A, so that the gas discharged from the compression mechanism 200 will flow through the air guide channel 301, the silencer chamber A and the exhaust port 101 in sequence when discharged outward, and the air guide channel 301, the silencer chamber A and the exhaust port 101 form a structure similar to an expansion muffler, which can play a role in attenuating pulsation and silencing when the exhaust gas flows outward, thereby achieving the purpose of attenuating the exhaust pressure pulsation of the compressor and reducing the noise transmitted by the compressor exhaust to the external pipeline.

[0069] In one embodiment of the present application, Figure 1 and Figure 6 The pulsation attenuation component 300 is connected to the inner wall of the shell 100 to divide the inner cavity of the shell 100 into a silencer chamber A and an exhaust chamber B. The compression mechanism 200 is arranged in the exhaust chamber B, and the air guide channel 301 connects the exhaust chamber B and the silencer chamber A.

[0070] In this embodiment, the pulsation attenuation component 300 divides the inner cavity of the shell 100 into a silencer chamber A and an exhaust chamber B, so that the gas exhausted from the compression mechanism 200 first enters the exhaust chamber B, then enters the silencer chamber A through the air guide channel 301, and then is discharged to the outside of the compressor from the exhaust port 101.

[0071] It is understandable that the specific position of the pulsation damping component 300 can be determined according to actual conditions. For example, it can be connected to the peripheral wall of the housing 100 to directly divide the inner cavity of the housing 100 into the muffler cavity A and the exhaust cavity B distributed along the axial direction of the housing 100; or it can be connected to a part of the peripheral wall of the housing 100, in which case the muffler cavity A can be located at the radial side of the exhaust cavity B; or it can be connected to the top wall of the housing 100, in which case the muffler cavity A can be located at the top area of ​​the housing 100, etc. It is sufficient as long as the gas in the exhaust cavity B enters the muffler cavity A through the gas guide channel 301.

[0072] As an example, Figure 1 and Figure 6 The pulsation attenuation component 300 includes a partition 310 arranged above the compression mechanism 200, the partition 310 is connected to the inner wall of the shell 100, the silencer chamber A and the exhaust chamber B are respectively arranged on the upper and lower sides of the partition 310; the air guide channel 301 is arranged on the partition 310.

[0073] In this embodiment, a partition 310 is arranged above the compression mechanism 200, and the partition 310 is connected to the inner wall of the shell 100, so that the partition 310 and the upper inner wall surface of the shell 100 enclose a silencer chamber A. At this time, the exhaust port 101 is arranged at the top of the shell 100, and the air guide channel 301 is located on the side of the silencer chamber A away from the exhaust port 101. The exhaust gas flow enters the silencer chamber A through the air guide channel 301 and is then discharged from the exhaust port 101.

[0074] It should be noted that the partition 310 in this embodiment is not limited to a specific plate structure, and may be, for example, a plate structure with an air flow channel inside, or may be a separate plate structure, etc. It is understandable that the air guide channel 301 is provided on the partition 310, and the air guide channel 301 may be built into the partition 310, or the air guide channel 301 may be connected to the partition 310.

[0075] This embodiment uses the method of connecting the partition 310 with the inner wall of the shell 100 to form the silencer chamber A, which does not require an additional silencer structure, further simplifies the overall structure and improves assembly efficiency. Optionally, the partition 310 and the inner wall of the shell 100 can be connected by cold pressing, shrink fitting, welding, gluing, etc.

[0076] In practical applications, the specific structure of the pulsation damping component 300 can be determined according to actual conditions.

[0077] In one embodiment of the present application, Figures 1 to 5, the pulsation attenuation component 300 includes a baffle 310 and an air duct 320, wherein the air duct 320 is an air channel 301; the baffle 310 is provided with a mounting hole 310a, and the air duct 320 is assembled at the mounting hole 310a. In this embodiment, the baffle 310 is a separate plate structure, and the air channel 301 is an air duct 320 externally disposed on the baffle 310, and the air duct 320 is assembled at the mounting hole 310a of the baffle 310, so that the air outlet end of the air duct 320 is connected with the silencer cavity A above the baffle 310, so that the exhaust gas flow enters the silencer cavity A with a larger cross-section from the air duct 320 with a smaller cross-section. Due to the sudden change in cross-section, its acoustic impedance changes, so that when the exhaust gas flow flows outward, partial sound wave reflection, interference and other phenomena will occur at the interface with a sudden change in acoustic impedance, thereby achieving a certain effect of silencing and attenuating pulsation, and reducing the transmission of sound to the outside.

[0078] It is understandable that the air outlet end of the air duct 320 can be flush with the upper surface of the partition 310, or can protrude from the upper surface of the partition 310 to extend into the silencer chamber A. In this embodiment, considering a better silencing effect, the air duct 320 runs through the partition 310, and the air outlet end of the air duct 320 extends into the silencer chamber A. It is understandable that by utilizing the length of the silencer chamber A and the insertion of the air duct 320, the forward propagating wave and the sound wave reflected by different interfaces of the air duct 320 are 180 degrees out of phase, so that the two have equal amplitudes and opposite phases, and interfere with each other to achieve the most ideal silencing effect. The length of the air duct 320 inserted into the silencer chamber A can be determined according to the frequency range of the noise that can be eliminated to achieve a better noise reduction effect. In order to better achieve the purpose of noise reduction, in this embodiment, the length h1 of the tube body of the air duct 320 extending into the silencer chamber A satisfies: h1<30mm. Optionally, the length h1 of the tube body of the air duct 320 inserted into the silencer cavity A can be determined according to actual conditions, for example, it can be 3mm, 5mm, 8mm, 10mm, 12mm, 15mm, 18mm, 20mm, 25mm or 28mm, etc.

[0079] In actual application, the extension shape of the air duct 320 can be determined according to actual conditions, such as a curved extension, a straight extension, a bent extension, or an extension in other shapes. In this embodiment, considering the space size of the inner cavity of the housing 100 and the length of the air duct 320, the air duct 320 is selected to be extended in a curved shape, such as an arc shape.

[0080] As an example, as shown in the following table, under the same conditions (such as the same compressor specifications, the same compression frequency and the same motor power), the exhaust pulsation pressure of the compressor having the present embodiment (partition 310 + air duct 320 solution) and the conventional compressor without a pulsation attenuation component 300 inside the shell 100 are tested at operating frequencies of 60 Hz and 90 Hz (taking the test at the exhaust port as an example). It can be seen from the comparison that at the same operating frequency, the improvement effect of the exhaust pressure pulsation of the compressor of the present embodiment is very obvious.

[0081]

[0082] As an example, Fig.11 By comparing the exhaust pulsation pressures of the compressor of this embodiment (partition 310 + air duct 320 solution) and the conventional compressor without a pulsation attenuation component 300 inside the shell 100 under the same conditions (such as the same compressor specifications, the same compression frequency and the same motor power) at an operating frequency of 90 Hz, it can be seen that the improvement effect of the exhaust pressure pulsation of the compressor of this embodiment is very obvious.

[0083] In actual application, Fig.12 By comparing the noise improvement / deterioration of the compressor of this embodiment (partition 310+air duct 320 solution) and the conventional compressor without pulsation attenuation component 300 inside the shell 100 under the same conditions (such as the same compressor specifications, the same compression frequency and the same motor power) at an operating frequency of 90Hz, it can be seen that the compressor of this embodiment can effectively improve the noise.

[0084] In another embodiment of the present application, Figures 6 to 10 The pulsation attenuation component 300 includes a partition 310 having an air flow channel inside, and the air guide channel 301 is an air flow channel formed inside the partition 310.

[0085] The partition 310 in this embodiment is a plate-like structure with an air flow channel inside, and the air flow channel is an air guide channel 301. The air inlet end of the air guide channel 301 is arranged on the lower surface of the partition 310 to communicate with the exhaust chamber B, and the air outlet end of the air guide channel 301 is arranged on the upper surface of the partition 310 to communicate with the silencer chamber A.

[0086] Specifically, the partition 310 includes a bottom shell 311 and an upper cover 312. The bottom shell 311 is connected to the inner wall of the housing 100. The bottom shell 311 is provided with a first air hole 310b connected to the exhaust chamber B. The upper cover 312 is provided on the bottom shell 311 and encloses the bottom shell 310 to form an air guide channel 301. The upper cover 312 is provided with a second air hole 310c connecting the air guide channel 301 with the muffler chamber A. It can be understood that the bottom shell 311 and the upper cover 312 enclose the air guide channel 301. The first air hole 310b connects the exhaust chamber B with the air guide channel 301, that is, the first air hole 310b is the inlet end of the air guide channel 301, the second air hole 310c connects the air guide channel 301 with the muffler chamber A, and the second air hole 310c is the outlet end of the air guide channel 301.

[0087] Optionally, the bottom shell 311 and the upper cover 312 can be an integrally formed structure, for example, they can be formed by 3D printing; or the bottom shell 311 and the upper cover 312 can be a split structure, connected by snaps, gluing, hot melting, welding, etc. Preferably, snaps are processed at multiple positions of the bottom shell 311 by injection molding to form a tight connection with the upper cover 312.

[0088] Further, the partition 310 also includes a guide rib 313 provided on the bottom shell 311 and / or the upper cover 312, and the side wall of the guide rib 313, the inner wall of the bottom shell 311 and the inner wall of the upper cover 312 enclose the air guide channel 301. It can be understood that the guide rib 313 plays a role in forming the air guide channel 301, and its purpose is to separate the cavity between the bottom shell 311 and the upper cover 312 into the air guide channel 301, so that the exhaust gas flow enters the air guide channel 301 from the first air hole 310b and flows through a certain path before flowing into the muffler chamber A from the second air hole 310c. Optionally, the guide rib 313 can be provided on the bottom shell 311, or can be provided on the upper cover 312, or can be provided on both the bottom shell 311 and the upper cover 312.

[0089] In actual application, the extension shape of the air guide channel 301 formed in the partition 310 can be determined according to actual conditions, for example, it can be set to a spiral shape, an "S"-shaped curved shape, a rectangular shape or other shapes, etc. In this embodiment, considering factors such as the volume of the partition 310 and the length of the air guide channel 301, the air guide channel 301 extends in a spiral shape. In actual application, the guide ribs 313 can also be set to extend in a spiral shape to extend the length of the air guide channel 301. In this way, the air guide channel 301 can extend in a spiral shape or not. In actual application, the first air hole 310b and the second air hole 310c can also be staggered so that the airflow enters from the first air hole 310b and needs to flow through the longer air guide channel 301 before entering the silencer chamber A from the second air hole 310c, so as to achieve a better sound absorbing and noise reduction effect.

[0090] Exemplarily, as shown in the following table, under the same conditions (such as the same compressor specifications, the same compression frequency, and the same motor power), the exhaust pulsation pressure of the compressor with the compressor of this embodiment (the air guiding channel 301 is built into the partition 310) and the conventional compressor without the pulsation attenuation component 300 inside the housing 100 is detected under the operating frequencies of 60 Hz and 90 Hz (taking the detection at the exhaust port as an example). By comparison, it can be seen that under the same operating frequency, the improvement effect of the exhaust pressure pulsation of the compressor of this embodiment is very obvious.

[0091]

[0092] In summary, the compressor with the pulsation attenuation component 300 provided in the housing 100 in this embodiment has an obvious exhaust pressure pulsation attenuation effect compared with the conventional compressor without the pulsation attenuation component 300, which can reduce the transmission of noise to the external refrigerant pipeline and reduce the overall machine noise.

[0093] In an embodiment of the present application, the flow length of the air guiding channel 301 is defined as L, satisfying: 50 mm < L < 300 mm. It can be understood that the flow length L of the air guiding channel 301 can be determined according to the frequency range of the noise that can be eliminated to achieve a better noise reduction effect. The flow length of the air guiding channel 301 in this embodiment should not be too long or too short. If it is too long or too short, the frequency band corresponding to the eliminated noise may not be consistent with the frequency band corresponding to the pressure pulsation of the compressor, and the attenuation effect on the pressure pulsation will be weakened. Based on this, the flow length L of the air guiding channel 301 in this embodiment is set to satisfy 50 mm < L < 300 mm. Optionally, the flow length L of the air guiding channel 301 can be 60 mm, 65 mm, 70 mm, 80 mm, 100 mm, 150 mm, 180 mm, 200 mm, 250 mm or 280 mm, etc.

[0094] In an embodiment of the present application, as Figure 1 , the exhaust port 101 and the air outlet end of the air guiding channel 301 are respectively arranged on the upper and lower sides of the sound absorption cavity A, and the height dimension of the sound absorption cavity A is H, satisfying: H ≥ 10 mm.

[0095] It can be understood that the exhaust port 101 and the air outlet end of the air guide channel 301 are respectively arranged on the upper and lower sides of the silencer chamber A, so the direction of the exhaust gas flow flowing outward is consistent with the height direction of the silencer chamber A. The length of the height dimension H of the silencer chamber A can be determined according to the frequency range of the noise that can be eliminated. The longer the length of the height dimension H of the silencer chamber A, the better the silencing effect. In this embodiment, the height dimension H of the silencer chamber A is set to meet: H ≥ 10mm, so as to achieve a better silencing and noise reduction effect. Optionally, the height dimension H of the silencer chamber A can be 10mm, 11mm, 12mm, 13mm, 20mm or other sizes, etc.

[0096] As an example, taking a vertical rotor compressor as an example, the exhaust port 101 is arranged at the top of the shell 100, and the air guide channel 301 is arranged at the bottom of the silencer chamber A. Then the height dimension H of the silencer chamber A can be understood as the distance between the top inner wall of the shell 100 and the upper surface of the partition 310.

[0097] In one embodiment of the present application, Figure 5 The compressor is provided with an exhaust pipe 400 installed at the exhaust port 101. The inner diameter of the exhaust pipe 400 is defined as d2, and the inner diameter of the air guide channel 301 is defined as d1, satisfying: d1≥d2.

[0098] In this embodiment, by setting the inner diameter d1 of the air guide channel 301 to be not less than the inner diameter d2 of the exhaust pipe 400, the exhaust gas flow is prevented from being throttled when flowing outward and affecting the exhaust volume, thereby ensuring the exhaust volume of the compressor.

[0099] In one embodiment of the present application, Figure 2 , Figure 4 as well as Figure 7 The partition 310 is provided with an escape opening 310d for the lead wire to pass through.

[0100] It can be understood that the partition 310 is arranged above the compression mechanism 200, and the compression mechanism 200 includes a motor assembly 210 and a pump body assembly 220. The motor assembly 210 needs to be connected to the outside through a lead. In this embodiment, a avoidance opening 310d is set on the partition 310 to allow the lead of the motor assembly 210 to pass through smoothly.

[0101] Optionally, the avoidance opening 310d may be a through hole structure provided in the middle area of ​​the partition 310, or may be a notch structure provided at the edge of the partition 310. In practical application, in order to facilitate the lead wire, as an example, the avoidance opening 310d is a notch structure provided at the edge of the partition 310.

[0102] Furthermore, the upper surface of the partition 310 is provided with a middle area and a peripheral area, and the middle area is higher than the peripheral area.

[0103] It is understandable that the upper surface of the partition 310 can be a plane, or a shape in which the middle area is higher than the surrounding area or the middle area is lower than the surrounding area. In this embodiment, by making the middle area higher than the surrounding area, the avoidance port 310d provided at the edge of the partition 310 can be used to return oil, thereby reducing the oil discharge rate of the compressor. In actual application, a plurality of oil return holes (not shown) can also be provided in the surrounding area to facilitate oil return.

[0104] In one embodiment of the present application, Figure 2 The edge of the partition 310 has a flange 314 , and the flange 314 is fixedly connected to the inner wall of the shell 100 .

[0105] It can be understood that, taking the partition 310 as a plate structure as an example, the flange 314 is set at the edge of the partition 310; taking the partition 310 as a structure with a built-in airflow channel as an example, the flange 314 is the peripheral edge of the partition 310. In this embodiment, the flange 314 at the edge of the partition 310 is connected to the inner wall of the shell 100, which increases the assembly area with the shell 100, improves the connection reliability, and is more convenient for assembly operation, thereby improving installation efficiency.

[0106] Optionally, the angle of the flange 314 may be perpendicular to the upper surface of the partition 310, or may be inclined outward at an angle not greater than 5°, and the direction of the flange 314 may be upward or downward.

[0107] Optionally, the flange 314 and the shell 100 may be fixedly connected by cold pressing, shrink fitting, welding, gluing, etc.

[0108] Furthermore, the distance between the flange 314 and the inner wall of the shell 100 is less than 0.1 mm to prevent the gas in the exhaust chamber B from flowing into the muffler chamber A from the gap between the flange 314 and the shell 100 without passing through the air guide channel 301 .

[0109] In practical applications, such as Figure 1 and Figure 6 The housing 100 may include an upper housing 110 and a lower housing 120 , the compression mechanism 200 and the pulsation attenuation assembly 300 are installed in the lower housing 120 , and the exhaust port 101 is provided in the upper housing 110 .

[0110] As an example, Figure 1 When installing the pulsation attenuation assembly 300, taking the air duct 320 with a length of 150 mm as an example, the air duct 320 and the partition 310 are first brazed, and the avoidance port 310d is located at the edge of the partition 310, and the flange 314 has an outward inclination angle of 2°. Before the compressor upper shell 110 is welded, the pulsation attenuation assembly 300 is pressed in by cold pressing, and then the compressor upper shell 110 is welded.

[0111] As an example, Figure 6 When installing the pulsation attenuation assembly 300, taking the partition 310 with a built-in air flow channel of 150 mm in length as an example, firstly, the bottom shell 311 with the air guide channel 301 is connected with the upper cover 312 by means of a snap-fit ​​method, and before the compressor upper shell 110 is welded, the pulsation attenuation assembly 300 is pressed in by means of cold pressing, and then the compressor upper shell 110 is welded.

[0112] The utility model also proposes a refrigeration device, which includes a compressor. The specific structure of the compressor refers to the above embodiment. Since the refrigeration device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Optionally, the refrigeration device can be a refrigerator, an air conditioner, a cold chain vehicle, etc.

[0113] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A compressor, characterized in that: include: A housing having an exhaust port; A compression mechanism is disposed in the housing; as well as A pulsation attenuation component is disposed in the housing and forms a silencer chamber with the housing, wherein the silencer chamber is located between the compression mechanism and the exhaust port, and the exhaust port is communicated with the silencer chamber; The pulsation attenuation component has an air guide channel connected to the muffler chamber, and the air guide channel is used to guide the gas discharged by the compression mechanism into the muffler chamber.

2. The compressor according to claim 1, characterized in that The pulsation attenuation component is connected to the inner wall of the shell to separate the inner cavity of the shell into the silencing cavity and the exhaust cavity. The compression mechanism is arranged in the exhaust cavity, and the air guide channel connects the exhaust cavity and the silencing cavity.

3. The compressor according to claim 2, characterized in that The pulsation attenuation component includes a partition arranged above the compression mechanism, the partition is connected to the inner wall of the shell, the silencer chamber and the exhaust chamber are respectively arranged on the upper and lower sides of the partition; the air guide channel is arranged on the partition.

4. The compressor according to claim 3, characterized in that The air guide channel is an air guide tube; The partition is provided with a mounting hole, and the air guide pipe is assembled in the mounting hole.

5. The compressor according to claim 4, characterized in that The air duct passes through the partition, and the air outlet end of the air duct extends into the muffler cavity.

6. The compressor according to claim 5, characterized in that The length of the air duct extending into the silencing cavity is defined as h1, which satisfies: h1<30 mm.

7. The compressor according to claim 4, characterized in that The airway extends in a curved shape.

8. The compressor according to claim 3, characterized in that The air guide channel is an air flow channel formed inside the partition.

9. The compressor according to claim 8, characterized in that The partition comprises: A bottom shell connected to the inner wall of the shell, the bottom shell being provided with a first air hole communicating with the exhaust cavity; and The upper cover is arranged on the bottom shell and encloses the bottom shell to form the air guide channel. The upper cover is provided with a second air hole connecting the air guide channel and the muffler cavity.

10. The compressor according to claim 9, characterized in that The partition further includes a guide rib arranged on the bottom shell and / or the upper cover, and the side wall of the guide rib, the inner wall of the bottom shell and the inner wall of the upper cover enclose the air guide channel.

11. The compressor according to claim 10, characterized in that The air guide channel extends in a spiral shape; And / or, the guide rib extends in a spiral shape; And / or, the first air hole and the second air hole are staggered.

12. The compressor according to any one of claims 1 to 11, characterized in that The flow length of the air guide channel is defined as L, which satisfies: 50 mm <L<300mm; And / or, the compressor is provided with an exhaust pipe installed at the exhaust port, the inner diameter of the exhaust pipe is defined as d2, the inner diameter of the air guide passage is defined as d1, and the following condition is satisfied: d1≥d2; And / or, the exhaust port and the air outlet end of the air guide channel are respectively arranged on the upper and lower sides of the silencing cavity, and the height dimension of the silencing cavity is H, satisfying: H≥10mm.

13. The compressor according to any one of claims 3 to 11, characterized in that The partition is provided with an escape opening for the lead wire to pass through.

14. The compressor according to claim 13, characterized in that The upper surface of the partition is provided with a middle area and a peripheral area, and the middle area is higher than the peripheral area; The avoidance opening is arranged at the edge of the partition; and / or, a plurality of oil return holes are arranged in the surrounding area.

15. The compressor according to any one of claims 3 to 11, characterized in that The edge of the partition has a flange, and the flange is fixedly connected to the inner wall of the shell.

16. A refrigeration device, characterized in that: Comprising a compressor as claimed in any one of claims 1 to 15.

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