Cylinder components, rotary fluid machinery and air conditioning equipment

Abstract

The present invention relates to the technical field of air compression, and discloses a cylinder assembly, a rotary fluid machine and an air conditioning device, including a cylinder, a roller and a vane, wherein the cylinder is provided with a working chamber and a vane groove and a connecting channel connected to the working chamber, the cylinder has a first resonance silencing chamber at one end of the vane groove away from the working chamber, the roller is rotatably arranged in the working chamber, the vane is connected to the roller, the vane is slidably arranged in the vane groove, the vane is provided with a communicating vent hole and a second resonance silencing chamber, the second resonance silencing chamber is connected to the first resonance silencing chamber, and the roller rotates in the working chamber to complete the process of air intake and / or compression and exhaust in the working chamber, and the roller can drive the vent hole to communicate with the connecting channel through the vane, so that part of the gas in the working chamber flows into the second resonance silencing chamber and the first resonance silencing chamber through the connecting channel. The present invention can reduce the gas pulsation in the process of air intake and / or compression and exhaust of the cylinder assembly, and improve the vibration and noise level of the cylinder assembly.

Description

Technical Field

[0001] The invention relates to the technical field of air compression, and in particular to a cylinder assembly, a rotary fluid machinery and an air conditioning device. Background Art

[0002] A compressor is a driven fluid machine that boosts low-pressure gas to high-pressure gas. It is the core of air-conditioning equipment. Compressor types include rolling rotor compressors, which have the advantages of simple structure, low cost and high reliability, and are therefore widely used in the industry.

[0003] The principle of a rolling rotor compressor is that the crankshaft rotates periodically under the driving force of the motor, and drives the roller to rotate synchronously eccentrically through its eccentric structure, thereby driving the vane to make radial reciprocating motion in the cylinder vane groove, so that the volume of the suction chamber and the compression chamber changes accordingly, thereby realizing the compressor's periodic suction, compression, and exhaust process. The compressor's pneumatic noise is one of the main sources of compressor noise, and it is necessary to focus on optimization and improvement during the compressor product design process. The compressor is gradually showing a trend of miniaturization. Due to design space limitations, the compressor's cylinder volume is further reduced, and the airflow pulsation is greatly increased. The resulting problems of large pneumatic noise and vibration are increasingly attracting attention from the industry. Summary of the invention

[0004] In view of this, the present invention provides a cylinder assembly, a rotary fluid machine and an air conditioning device to solve the problems of large pneumatic noise and vibration of the existing compressor.

[0005] The first aspect of the present invention provides a cylinder assembly, including a cylinder, a roller and a vane, the cylinder being provided with a working chamber, a vane groove and a connecting channel connected to the working chamber, the cylinder having a first resonance muffler chamber at the end of the vane groove away from the working chamber, the roller being rotatably arranged in the working chamber, the vane being connected to the roller, the vane being slidably arranged in the vane groove, the vane being provided with a communicating air vent and a second resonance muffler chamber, the second resonance muffler chamber being connected to the first resonance muffler chamber, the roller rotating in the working chamber so that the working chamber completes the process of air intake and / or compression and exhaust, the roller can drive the air vent to communicate with the connecting channel through the vane, so that part of the gas in the working chamber flows into the second resonance muffler chamber and the first resonance muffler chamber through the connecting channel.

[0006] Beneficial effect: When the roller of the cylinder assembly of the present application rotates in the working chamber to enable the working chamber to complete the intake and / or compression and exhaust, the roller can drive the vent hole to connect with the connecting channel through the slide, so that part of the gas in the working chamber can flow into the second resonance silencer chamber and the first resonance silencer chamber through the connecting channel. Under the action of the resonance silencer chamber, the gas can be buffered, thereby greatly reducing the gas pulsation during the intake and / or compression and exhaust process of the cylinder assembly, and improving the vibration and noise level of the cylinder assembly.

[0007] In some embodiments, the working chamber includes a compression chamber and an air inlet chamber, the vent hole is arranged on a side of the slide facing the compression chamber, and the connecting channel is connected to the compression chamber;

[0008] The cylinder assembly has a first position, a second position and a third position. In the first position, the roller rotates to a position where air suction is cut off. In the second position, the roller rotates to a position where the distance of the slide into the working chamber reaches the longest. In the third position, the roller rotates to a position where compression and exhaust are finished. In the process of switching the cylinder assembly from the first position to the second position, the slide drives the vent hole to gradually connect with the connecting channel. In the process of switching the cylinder assembly from the second position to the third position, the slide drives the vent hole to gradually disconnect with the connecting channel.

[0009] Beneficial effect: When the roller rotates to different positions in the working chamber, the connection state of the vent hole and the connecting channel is designed. Specifically, when the cylinder assembly switches from the first position to the second position, the slide drives the vent hole to be gradually connected with the connecting channel. When the cylinder assembly switches from the second position to the third position, the slide drives the vent hole to be gradually disconnected from the connecting channel, so that the roller drives the slide to reciprocate, so that the effective cross-sectional area of ​​the vent hole on the slide changes in real time, so that the second resonance silencer cavity and the first resonance silencer cavity can perform broadband silencer, thereby improving the silencer and noise reduction effect of the cylinder assembly. In the present application, the gas in the compression chamber will flow into the first resonance chamber along the connecting channel and the second resonance silencer cavity. While the slide moves back and forth along the slide groove with the slide, the effective volume of the first resonance silencer cavity is also constantly changing. The volume change can make the silencer frequency band change synchronously to achieve broadband silencer. At the same time, it can also serve as the second compression chamber of the cylinder assembly. The combined effect with the compression chamber of the cylinder assembly itself can increase the compression amount (refrigeration capacity) of the refrigerant and improve the compression efficiency and energy efficiency level of the pump body.

[0010] In some embodiments, based on the cylinder assembly being in the first position, a distance S between an edge of the vent hole close to the roller and the connecting channel is greater than or equal to 3.5 mm.

[0011] Beneficial effect: Through the above-mentioned arrangement, a sufficient safety distance can be ensured between the vent hole and the connecting channel, thereby avoiding the risk of gas reflux caused by the high-pressure gas inside the second resonance silencer chamber leaking along the vent hole and the connecting channel into the air intake chamber and connecting with the air intake hole when the roller rotates to the suction cut-off position (first position), thereby ensuring the energy efficiency level of the cylinder assembly.

[0012] In some embodiments, the end of the slide connected to the roller is provided with a spherical head, the roller is provided with a spherical groove matching with the spherical head, and the slide and the roller are hinged through the spherical head and the spherical groove.

[0013] Beneficial effect: Compared with the existing solution in which the slide and the roller are abutted by spring elastic force, the slide and the roller of the present application are hinged by a spherical head and a spherical groove, which can ensure a reliable connection between the slide and the roller. The two always remain connected during the rotation of the roller, solving the low-frequency rattling sound caused by the separation of the slide and the roller.

[0014] In some embodiments, a pneumatic lubrication channel is provided at one end of the slide close to the roller, one end of the pneumatic lubrication channel is connected to the hinge gap between the spherical head and the spherical groove, and the other end of the pneumatic lubrication channel is connected to the compression chamber.

[0015] Beneficial effects: The present application sets a pneumatic lubrication channel on the sliding vane, so that the high-pressure gas in the compression chamber can flow into the hinge gap between the spherical head and the spherical groove through the pneumatic lubrication channel to form an air film between the sliding vane and the roller, effectively reducing the friction between the sliding vane and the roller, reducing the wear of parts, and replacing the oil film with the air film, without the need to set up other additional parts for installation and use, the structure is simple to process and has good processability.

[0016] In some embodiments, the center of the vent hole is located in the middle of the overall height of the slide.

[0017] Beneficial effect: When the vent hole is connected to the connecting channel, the high-pressure gas in the compression chamber will enter the second resonant silencer chamber of the slide along the vent hole. However, the high-pressure gas can easily produce local gas force on the slide, causing the slide to deflect. Therefore, by setting the center of the vent hole in the middle of the total height of the slide, the force on the slide can be more concentrated in the center and more evenly, thereby alleviating the displacement of the slide in the height direction.

[0018] In some embodiments, the total volume V of the first resonant muffler cavity and the second resonant muffler cavity satisfies the following relationship, in Hertz:

[0019]

[0020] Wherein, d is the diameter of one end of the connecting channel connected to the vent hole, c is the speed of sound in the refrigerant, and L is the depth of the vent hole.

[0021] Beneficial effect: According to the sound-absorbing characteristics of the resonance cavity, the main sound-absorbing frequency band is 630Hz~2000Hz. Therefore, by setting the total volume V of the first resonance sound-absorbing cavity and the second resonance sound-absorbing cavity of the present application as mentioned above, it is ensured that the maximum sound-absorbing frequency is greater than 2000Hz, and the noise in the frequency band of 2000Hz and below can be silenced and reduced, so that the resonance sound-absorbing effect inside the first resonance sound-absorbing cavity and the second resonance sound-absorbing cavity is optimized.

[0022] In some embodiments, the slide is made of ceramic material and is configured as a hollow structure, the second resonance silencing cavity is formed inside the slide, and the vent is formed on a side wall of the slide.

[0023] Beneficial effects: The vane is made of ceramic material with low density and low thermal conductivity, which effectively improves the low-frequency noise vibration level and suction heating problems. The interior of the vane is set to be hollow, which is convenient for the setting of the second resonance silencer cavity and further reduces the weight of the vane, which is beneficial to the rotation of the roller and ensures the energy efficiency of the cylinder assembly.

[0024] In some embodiments, the second resonance silencing chamber extends along the length direction of the slide, and the second resonance silencing chamber is closed at one end close to the roller, and the second resonance silencing chamber is connected to the first resonance silencing chamber at one end away from the roller, and the vent hole is connected to the center of the second resonance silencing chamber.

[0025] Beneficial effect: The second resonance silencing chamber is extended along the length direction of the slide to maximize the setting volume of the second resonance silencing chamber as much as possible, so that the resonance silencing ability of the slide is optimized and the slide is lighter. The vent is connected to the center of the second resonance silencing chamber so that the gas enters from the center of the second resonance silencing chamber, so that the slide is subjected to more uniform force.

[0026] In some embodiments, an edge of at least one of the vent hole, the second resonance muffler cavity, and the connecting channel is rounded or streamlined.

[0027] Beneficial effect: By making the edges of at least one of the vent hole, the second resonance silencer cavity and the connecting channel rounded or streamlined, vortexes can be prevented from being generated when the gas passes through the edges.

[0028] In some embodiments, the cylinder assembly also includes an upper flange and a lower flange, and the upper flange and the lower flange are respectively arranged on both sides of the cylinder, and the upper flange, the lower flange and the cylinder cooperate to form the sealed working chamber, the vane groove, the first resonance silencer chamber and the second resonance silencer chamber.

[0029] Beneficial effect: The upper flange and the lower flange seal the cylinder, and the slide slot eliminates the spring hole and adopts the upper flange and the lower flange closed design, which ensures the sealing of the first resonance silencer cavity and the second resonance silencer cavity without air leakage and cross-flow, thereby ensuring the performance of the cylinder assembly.

[0030] A second aspect of the present invention provides a rotary fluid machine, comprising the above-mentioned cylinder assembly.

[0031] Beneficial effect: Since the rotary fluid machinery of the present application includes the above-mentioned cylinder assembly, it has the same technical effect as the above-mentioned cylinder assembly, which will not be repeated here.

[0032] A third aspect of the present invention provides an air conditioning device, comprising the above-mentioned rotary fluid machinery.

[0033] Beneficial effect: Since the air-conditioning equipment of the present application includes the above-mentioned rotary fluid machinery, it has the same technical effect as the above-mentioned rotary fluid machinery, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0035] Figure 1 It is a schematic diagram of the three-dimensional exploded structure of a cylinder assembly according to one embodiment of the present invention;

[0036] Figure 2 It is a structural schematic diagram of a cylinder assembly in a first position according to an embodiment of the present invention;

[0037] Figure 3 It is a structural schematic diagram of a cylinder assembly in a second position according to an embodiment of the present invention;

[0038] Figure 4 It is a structural schematic diagram of a cylinder assembly in a third position according to an embodiment of the present invention;

[0039] Figure 5 A front view of a slide in a cylinder assembly according to an embodiment of the present invention;

[0040] Figure 6 It is a cross-sectional view of a slide in a cylinder assembly according to an embodiment of the present invention.

[0041] Description of Reference Numerals

[0042] 10. Cylinder; 11. Air intake chamber; 12. Compression chamber; 13. Sliding vane groove; 131. First resonance muffler chamber; 14. Connecting channel; 15. Air intake hole;

[0043] 20. Roller;

[0044] 30. Sliding vane; 31. Ventilation hole; 32. Second resonance silencer cavity; 33. Pneumatic lubrication channel;

[0045] 40. Crankshaft;

[0046] 50. Upper flange;

[0047] 60. Lower flange. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0049] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0052] Combine the following Figures 1 to 6 , describing an embodiment of the present invention.

[0053] like Figures 1 to 4As shown, according to an embodiment of the present invention, on the one hand, a cylinder 10 assembly is disclosed, comprising a cylinder 10, a roller 20 and a vane 30, wherein the cylinder 10 is provided with a working chamber and a vane groove 13 and a connecting channel 14 connected to the working chamber, the cylinder 10 has a first resonance muffler chamber 131 at one end of the vane groove 13 away from the working chamber, the roller 20 is rotatably arranged in the working chamber, the vane 30 is connected to the roller 20, the vane 30 is slidably arranged in the vane groove 13, the vane 30 is provided with a communicating vent hole 31 and a second resonance muffler chamber 32, the second resonance muffler chamber 32 is connected to the first resonance muffler chamber 131, and when the roller 20 rotates in the working chamber to complete the process of air intake and / or compression exhaust in the working chamber, the roller 20 can drive the vent hole 31 to communicate with the connecting channel 14 through the vane 30, so that part of the gas in the working chamber flows into the second resonance muffler chamber 32 and the first resonance muffler chamber 131 through the connecting channel 14.

[0054] The cylinder 10 assembly of the present application has a first resonant silencing chamber 131 at one end of the vane groove 13 away from the working chamber, a second resonant silencing chamber 32 connected to the first resonant silencing chamber 131 is arranged on the vane 30, and an air vent 31 connected to the second resonant silencing chamber 32 is arranged on the vane 30, and a connecting channel 14 connected to the working chamber is arranged on the cylinder 10. When the roller 20 rotates in the working chamber to complete the suction and / or compression and exhaust of the working chamber, the roller 20 can drive the air vent 31 to communicate with the connecting channel 14 through the vane 30, so that part of the gas in the working chamber can flow into the second resonant silencing chamber 32 and the first resonant silencing chamber 131 through the connecting channel 14, and the resonant silencing chamber can buffer the gas, thereby greatly reducing the gas pulsation during the suction and / or compression and exhaust process of the cylinder 10 assembly, and improving the vibration and noise level of the cylinder 10 assembly.

[0055] The cylinder wall of the cylinder 10 is provided with an air inlet hole 15 and an air exhaust hole. The working chamber includes a compression chamber 12 and an air inlet chamber 11. The air inlet chamber 11 is connected to the air inlet hole 15. The gas enters the air inlet chamber 11 of the cylinder 10 through the air inlet hole 15. The compression chamber 12 is connected to the exhaust hole. The compression chamber 12 is used to compress the incoming gas and discharge the high-pressure gas through the exhaust hole.

[0056] The connecting passage 14 is in communication with at least one of the compression chamber 12 and the intake chamber 11 to alleviate gas pulsation of the cylinder 10 assembly during intake and / or compression and exhaust processes.

[0057] In some embodiments, the connecting channel 14 is connected to the air suction chamber. When the roller 20 rotates in the working chamber to complete the air suction process of the air suction chamber, the roller 20 can drive the vent hole 31 to communicate with the connecting channel 14 through the sliding sheet 30, so that part of the gas entering the air suction chamber can flow into the second resonance muffler chamber 32 and the first resonance muffler chamber 131 through the connecting channel 14, so as to alleviate the gas pulsation generated by the cylinder 10 assembly during the air suction process;

[0058] In some embodiments, the connecting channel 14 is connected to the compression chamber 12. When the roller 20 rotates in the working chamber to complete the compression and exhaust of the compression chamber 12, the roller 20 can drive the vent hole 31 to communicate with the connecting channel 14 through the sliding vane 30, so that part of the high-pressure gas in the compression chamber 12 can flow into the second resonance muffler chamber 32 and the first resonance muffler chamber 131 through the connecting channel 14 to alleviate the gas pulsation generated by the cylinder 10 assembly during the compression and exhaust process;

[0059] In some embodiments, two connecting channels 14 are provided and respectively connect the compression chamber 12 and the air intake chamber 11. When the roller 20 rotates in the working chamber to complete the air intake and compression and exhaust of the working chamber, the roller 20 can drive the vent hole 31 to connect with the connecting channel 14 through the slide 30, so that part of the gas entering the air intake chamber 11 and part of the high-pressure gas in the compression chamber 12 can flow into the second resonance muffler chamber 32 and the first resonance muffler chamber 131 through the connecting channel 14, so as to alleviate the gas pulsation generated by the cylinder 10 assembly during the air intake and compression and exhaust process.

[0060] In this embodiment, the air vent 31 is arranged on the side of the slide 30 facing the compression chamber 12, the connecting channel 14 is connected to the compression chamber 12, and the cylinder 10 assembly has a first position, a second position and a third position. In the first position, the roller 20 rotates to the position where the suction is cut off. In the second position, the roller 20 rotates to the position where the distance of the slide 30 extending into the working chamber reaches the longest. In the third position, the roller 20 rotates to the position where the compression and exhaust are ended. In the process of switching the cylinder 10 assembly from the first position to the second position, the slide 30 drives the air vent 31 to gradually connect with the connecting channel 14. In the process of switching the cylinder 10 assembly from the second position to the third position, the slide 30 drives the air vent 31 to gradually disconnect with the connecting channel 14.

[0061] When the roller 20 rotates to different positions in the working chamber, the connection state of the vent hole 31 and the connecting channel 14 is designed. Specifically, when the cylinder 10 assembly switches from the first position to the second position, the slide 30 drives the vent hole 31 to be gradually connected with the connecting channel 14. When the cylinder 10 assembly switches from the second position to the third position, the slide 30 drives the vent hole 31 to be gradually disconnected from the connecting channel 14. As a result, the roller 20 drives the slide 30 to reciprocate, so that the effective cross-sectional area of ​​the vent hole 31 on the slide 30 changes in real time, so that the second resonant silencer cavity 32 and the first resonant silencer cavity 32 are connected. The resonance silencer chamber 131 can perform broadband silencer to enhance the silencer and noise reduction effect of the cylinder 10 assembly, and in the present application, the gas in the compression chamber 12 will flow into the first resonance silencer chamber 131 along the connecting channel 14 and the second resonance silencer chamber 32. While the slide vane 30 reciprocates along the slide vane groove 13, the effective volume of the first resonance silencer chamber 131 is constantly changing. The volume change can make the silencer frequency band change synchronously to achieve broadband silencer. At the same time, it can also serve as the second compression chamber of the cylinder assembly, and can work together with the compression chamber 12 of the cylinder assembly itself to increase the refrigerant compression capacity (cooling capacity) and improve the compression efficiency and energy efficiency level of the pump body.

[0062] It can be understood that the first resonant silencing chamber 131 is arranged at the end of the vane slot 13 away from the working chamber, that is, the first resonant silencing chamber 131 and the end of the vane slot 13 away from the working chamber are connected. When the vane 30 gradually slides out of the vane slot 13, a gradually increasing cavity is formed at the end of the vane slot 13 away from the working chamber and is connected to the first resonant silencing chamber 131, thereby gradually increasing the effective volume of the first resonant silencing chamber 131. When the vane 30 gradually slides into the vane slot 13, the cavity at the end of the vane slot 13 away from the working chamber gradually decreases, thereby gradually reducing the effective volume of the first resonant silencing chamber 131.

[0063] like Figure 2 As shown, in the first position, the roller 20 rotates to the suction cut-off position, that is, the roller 20 just completely blocks the air inlet hole 15 so that the gas cannot continue to flow into the air inlet chamber 11 through the air inlet hole 15, which also means that the air inlet chamber 11 is now converted into a compression chamber 12 and starts to compress and exhaust from this time. At this time, the angle between the tangent point of the roller 20 and the inner wall of the cylinder 10 and the center line of the cylinder 10 and the center line of the cylinder 10 is set to α, that is, each time the roller 20 rotates to the angle α, it means that the air inlet chamber 11 stops taking in air and the compression chamber 12 starts to compress and exhaust.

[0064] During the process of the cylinder 10 assembly switching from the first position to the second position, the roller 20 drives the slide 30 to gradually extend from the slide groove 13 into the working chamber, thereby driving the vent hole 31 to move toward the connecting channel 14 and gradually communicate with the connecting channel 14.

[0065] It can be understood that during the process of switching the cylinder 10 assembly from the first position to the second position, the slide 30 divides the working chamber into two parts, one side serves as the intake chamber 11 for intake work and the intake chamber 11 gradually increases during the rotation of the roller 20, and the other side serves as the compression chamber 12 for compression and exhaust work and the compression chamber 12 gradually decreases during the rotation of the roller 20.

[0066] like Figure 3 As shown, in the second position, the roller 20 rotates to the position where the distance of the slide 30 extending into the working chamber reaches the longest. At this time, the slide 30 divides the working chamber equally, so that the volume of the air inlet chamber 11 and the compression chamber 12 is the same. At this time, the vent hole 31 and the connecting channel 14 remain connected.

[0067] When the cylinder 10 assembly switches from the second position to the third position, the roller 20 drives the slide 30 to gradually retract from the working chamber into the slide groove 13 , thereby driving the vent hole 31 to move away from the working chamber and gradually disconnect from the connecting channel 14 .

[0068] like Figure 4 As shown, in the third position, the roller 20 rotates to the position where compression and exhaust end, the slide 30 is completely retracted into the slide groove 13, the volume of the compression chamber 12 is reduced to zero, and the volume of the intake chamber 11 is increased to the maximum, that is, at this time, the area between the roller 20 and the inner wall of the cylinder 10 is the intake chamber 11.

[0069] When the cylinder 10 assembly switches from the third position to the first position, the compression chamber 12 increases from zero to the maximum. When the cylinder 10 assembly reaches the first position, the compression chamber 12 reaches the maximum volume, and the intake chamber 11 is at the minimum volume. With a new round of rotation of the roller 20, the compression chamber 12 and the intake chamber 11 change accordingly, and this cyclic reciprocating change realizes the intake, compression, and exhaust processes of the cylinder 10 assembly.

[0070] This design ensures that the first resonant silencer chamber 131, the second resonant silencer chamber 32 and the compression chamber 12 of the cylinder 10 are periodically connected, and when the cylinder 10 assembly reaches the third position, the vent hole 31 and the connecting channel 14 are disconnected, which can also prevent the high-pressure gas in the resonant silencer chamber from communicating with the suction chamber and causing gas reflux, thereby avoiding affecting the energy efficiency level of the compressor.

[0071] It can be understood that when the roller 20 stays at the third position and the compression ends, the vent hole 31 and the connecting channel 14 are disconnected, and the second resonance silencer chamber 32 and the first resonance silencer chamber 131 are filled with high-pressure gas. When the roller 20 switches from the first position to the second position, the vent hole 31 and the connecting channel 14 are gradually connected. When connected, the air pressure in the second resonance silencer chamber 32 and the first resonance silencer chamber 131 may be higher than the air pressure in the compression chamber 12. At this time, the high-pressure gas in the second resonance silencer chamber 32 and the first resonance silencer chamber 131 can flow into the compression chamber 12 through the vent hole 31 and the connecting channel 14 to achieve pressure relief. When the compression enters the second half, for example, when the roller 20 switches from the second position to the third position, the air pressure in the compression chamber 12 continues to increase and is greater than the air pressure in the second resonance silencer chamber 32 and the first resonance silencer chamber 131. At this time, the high-pressure gas in the compression chamber 12 can flow into the second resonance silencer chamber 32 and the first resonance silencer chamber 131 through the connecting channel 14 and the vent hole 31 to achieve sound elimination and noise reduction.

[0072] like Figure 2 As shown, in some embodiments, based on the cylinder 10 assembly being in the first position, a distance S between the edge of the vent hole 31 close to the roller 20 and the connecting channel 14 is greater than or equal to 3.5 mm.

[0073] Through the above arrangement, a sufficient safety distance can be provided between the air vent 31 and the connecting channel 14, thereby preventing the risk of gas reflux caused by the high-pressure gas inside the second resonance silencer chamber 32 leaking along the air vent 31 and the connecting channel 14 into the air intake chamber 11 and connecting with the air intake hole 15 when the roller 20 rotates to the suction cut-off position (first position), thereby ensuring the energy efficiency level of the cylinder 10 assembly.

[0074] The specific value of S can be 3.5 mm, 4 mm, 6 mm or 8 mm, etc., and this embodiment does not make any specific limitation.

[0075] In some embodiments, the end of the slide 30 connected to the roller 20 is provided with a spherical head, and the roller 20 is provided with a spherical groove that cooperates with the spherical head. The slide 30 and the roller 20 are hinged through the spherical head and the spherical groove.

[0076] Compared with the existing solution in which the slide 30 and the roller 20 are abutted by spring elastic force, the slide 30 and the roller 20 of the present application are hinged by a spherical head and a spherical groove, which can ensure a reliable connection between the slide 30 and the roller 20. The two always remain connected during the rotation of the roller 20, solving the low-frequency rattling sound caused by the separation of the slide 30 and the roller 20.

[0077] In some embodiments, a pneumatic lubrication channel 33 is provided at one end of the slide 30 close to the roller 20 , one end of the pneumatic lubrication channel 33 is connected to the hinge gap between the spherical head and the spherical groove, and the other end of the pneumatic lubrication channel 33 is connected to the compression chamber 12 .

[0078] The present application sets a pneumatic lubrication channel 33 on the slide 30, so that the high-pressure gas in the compression chamber 12 can flow into the hinge gap between the spherical head and the spherical groove through the pneumatic lubrication channel 33 to form an air film between the slide 30 and the roller 20, thereby effectively reducing the friction between the slide 30 and the roller 20 and reducing the wear of the parts. The air film replaces the oil film, and there is no need to set up other additional parts for installation and use. The structure is simple to process and has good processability.

[0079] like Figures 2 to 4 , Figure 6 As shown, in terms of the setting shape, the pneumatic lubrication channel 33 can be specifically set as an L-shaped channel, one end of the L-shaped channel penetrates the spherical head of the slide 30, and the other end of the L-shaped channel penetrates the side wall of the slide 30 to connect with the compression chamber 12.

[0080] Of course, in other embodiments, the shape of the pneumatic lubrication channel 33 can be adjusted as needed. For example, the pneumatic lubrication channel 33 can also be set to a C-shape, a V-shape, etc.

[0081] In some embodiments, the center of the vent hole 31 is located in the middle of the overall height of the slide 30 .

[0082] When the air vent 31 is connected to the connecting channel 14, the high-pressure gas in the compression chamber 12 will enter the second resonance silencer chamber 32 of the slide 30 along the air vent 31. However, the high-pressure gas can easily generate a local gas force on the slide 30, causing the slide 30 to deflect. Therefore, by setting the center of the air vent 31 at the middle position of the total height of the slide 30, the force on the slide 30 can be more concentrated in the center and more uniform, thereby alleviating the displacement of the slide 30 in the height direction.

[0083] Specifically, Figure 5 As shown, the total height of the slide 30 is H, and the distance from the center of the vent hole 31 to the bottom edge of the slide 30 is h, so h=H / 2.

[0084] like Figure 3 and Figure 5 As shown, in some embodiments, the total volume V of the first resonant muffler cavity 131 and the second resonant muffler cavity 32 satisfies the following relationship, in units of (Hertz):

[0085]

[0086] Wherein, d is the diameter of one end of the connecting channel 14 connected to the vent hole 31 , c is the speed of sound in the refrigerant, and L is the depth of the vent hole 31 .

[0087] According to the sound-absorbing characteristics of the resonance cavity, the main sound-absorbing frequency band is 630Hz~2000Hz. Therefore, by setting the total volume V of the first resonance sound-absorbing cavity 131 and the second resonance sound-absorbing cavity 32 of the present application as mentioned above, it is ensured that the maximum sound-absorbing frequency is greater than 2000Hz, and the noise in the frequency band of 2000Hz and below can be silenced and reduced, so that the internal resonance sound-absorbing effect of the first resonance sound-absorbing cavity 131 and the second resonance sound-absorbing cavity 32 is optimized.

[0088] In some embodiments, the slide 30 is made of ceramic material and is configured as a hollow structure. The second resonance silencing cavity 32 is formed inside the slide 30 , and the vent hole 31 is formed on a side wall of the slide 30 .

[0089] The vane 30 is made of ceramic material with low density and low thermal conductivity, which effectively improves the low-frequency noise vibration level and air intake heating problems. The interior of the vane 30 is set to be hollow, which is convenient for the setting of the second resonance silencer cavity 32 and further reduces the weight of the vane 30, which is beneficial to the rotation of the roller 20 and ensures the energy efficiency of the cylinder 10 assembly.

[0090] Specifically, the ceramic material may be zirconium oxide, aluminum oxide, etc., but is not limited thereto. For ease of understanding, the properties of the materials used in the sliding vane 30 of this embodiment and the existing sliding vane 30 are compared, as shown in the following table:

[0091]

[0092] As shown in the above table, the table compares the properties of different materials. Since the existing vane 30 is made of metal materials such as FC300, its density is relatively large and its thermal conductivity is high. When the cylinder 10 assembly is running, the low-frequency noise and vibration level deviates. At the same time, the high temperature of the cylinder 10 assembly during compression is easily transmitted to the intake chamber 11 through the vane 30 to cause the problem of suction heating, resulting in a reduction in the actual intake volume of the intake chamber 11, affecting the operating energy efficiency of the cylinder 10 assembly. Therefore, the present invention preferably uses ceramic materials with low density and low thermal conductivity such as zirconium oxide and aluminum oxide to manufacture the vane 30. Compared with the existing metal vane 30, it effectively improves the low-frequency noise vibration and suction heating problems.

[0093] In some embodiments, the second resonance silencer chamber 32 extends along the length direction of the slide 30, and the end of the second resonance silencer chamber 32 close to the roller 20 is closed, and the end of the second resonance silencer chamber 32 away from the roller 20 passes through the first resonance silencer chamber 131, and the vent hole 31 is connected to the center of the second resonance silencer chamber 32.

[0094] The second resonance silencing chamber 32 is extended along the length direction of the slide 30 to maximize the setting volume of the second resonance silencing chamber 32, so that the resonance silencing ability of the slide 30 is optimized and the slide 30 is lighter. The vent hole 31 is connected to the center of the second resonance silencing chamber 32 so that the gas enters from the center of the second resonance silencing chamber 32, so that the slide 30 is subjected to more uniform force.

[0095] It should be noted that, in this embodiment, the length direction of the sliding piece 30 specifically refers to Figure 5 The left and right directions in the figure, the height direction of the slide 30 specifically refers to Figure 5 The up and down directions in .

[0096] In some embodiments, the edge of at least one of the vent hole 31 , the second resonance muffler cavity 32 , and the connecting channel 14 is rounded or streamlined.

[0097] By making the edges of at least one of the vent hole 31, the second resonance muffler cavity 32 and the connecting channel 14 rounded or streamlined, it is possible to prevent vortexes from being generated when the gas passes through the edges.

[0098] In this embodiment, the edges of the vent hole 31 , the second resonance muffler cavity 32 and the connecting channel 14 are all configured to be rounded or streamlined to allow the gas to pass smoothly, but the present invention is not limited thereto.

[0099] Preferably, the slide 30 is set as a directional thin sheet, the corresponding slide slot 13 is a square slot, the thickness of the slide 30 is equal to the width of the inner wall of the square slot, so that the slide 30 can be matched and set in the slide slot 13, the first resonance silencing cavity 131 is a cylindrical cavity, which is connected to the end of the slide slot 13 away from the roller 20, and when the slide 30 is installed in the slide slot 13, the second resonance silencing cavity 32 in the slide 30 is connected to the first resonance silencing cavity 131. Of course, the shape of the slide 30 can be deformed and designed as needed, and is not limited to this embodiment.

[0100] The cross-sectional shapes of the connecting channel 14 and the second resonant muffler cavity 32 inside the slide 30 are both circular, and the vent hole 31 is set as a long strip hole, and the opposite sides of the long strip hole are transitioned through a semicircle, but not limited to this. For example, the cross-sectional shapes of the connecting channel 14 and the second resonant muffler cavity 32 inside the slide 30 can also be set as a square, an ellipse or other special-shaped structures, and the vent hole 31 can also be set as a circular hole.

[0101] The connecting channel 14 is a straight channel arranged obliquely to the sliding vane 30 so that the gas flows through the inclined connecting channel 14 to reduce the resistance of the gas passing through, but it is not limited thereto. For example, the connecting channel 14 can also be arranged as an arc-shaped channel.

[0102] In some embodiments, the cylinder 10 assembly also includes an upper flange 50 and a lower flange 60, which are respectively arranged on both sides of the cylinder 10, and the upper flange 50, the lower flange 60 and the cylinder 10 cooperate to form a sealed working chamber, a vane groove 13, a first resonant silencer chamber 131 and a second resonant silencer chamber 32.

[0103] The upper flange 50 and the lower flange 60 seal the cylinder 10, and the vane slot 13 eliminates the spring hole and adopts a closed design of the upper flange 50 and the lower flange 60, ensuring the sealing of the first resonance silencer chamber 131 and the second resonance silencer chamber 32 without air leakage and cross-flow, thereby ensuring the performance of the cylinder 10 assembly.

[0104] In addition to the above configuration, the cylinder 10 assembly also includes a crankshaft 40, which is connected to the roller 20. The crankshaft 40 drives the roller 20 to rotate eccentrically in the working chamber of the cylinder 10 to realize the intake, compression and exhaust processes of the cylinder 10.

[0105] To facilitate understanding of the cylinder 10 assembly of this embodiment, the working process thereof is now described as follows:

[0106] The gas flows into the air inlet chamber 11 through the air inlet hole 15. When the roller 20 rotates to the first position, the roller 20 completely blocks the air inlet hole 15. At this time, the air inlet chamber 11 cannot be taken in and the air inlet chamber 11 is converted into the compression chamber 12 with the largest volume. In the process of the roller 20 rotating from the first position to the second position, the roller 20 drives the slide 30 to gradually extend from the slide groove 13 into the working chamber. The slide 30 divides the working chamber into two parts. One side is the air inlet chamber 11 connected to the air inlet hole 15 for air intake, and the air inlet chamber 11 gradually increases during the rotation of the roller 20. The other side is the compression chamber 12 for compression and exhaust, and the compression chamber 12 gradually decreases during the rotation of the roller 20. The roller 20 drives the vent hole 31 on the slide 30 to move toward the connecting channel 14 and gradually connect with the connecting channel 14. When connected, the high-pressure gas in the second resonance muffler chamber 32 and the first resonance muffler chamber 131 can flow into the compression chamber 12 through the vent hole 31 and the connecting channel 14 to achieve pressure relief.

[0107] When the roller 20 rotates from the second position to the third position, the high-pressure gas in the compression chamber 12 can flow into the second resonance silencer chamber 32 and the first resonance silencer chamber 131 through the connecting channel 14 and the vent hole 31 to achieve silence and noise reduction;

[0108] The roller 20 rotates to the third position where compression and exhaust are completed. At this time, the vent hole 31 and the connecting channel 14 remain disconnected, the volume of the compression chamber 12 is reduced to zero, and the volume of the intake chamber 11 is increased to the maximum;

[0109] When the roller 20 rotates from the third position to the first position, the compression chamber 12 increases from zero to the maximum. When the roller 20 reaches the first position, the compression chamber 12 reaches the maximum volume, and the intake chamber 11 is at the minimum volume. With a new round of rotation of the roller 20, the compression chamber 12 and the intake chamber 11 change accordingly, and this cyclic reciprocating change realizes the intake, compression, and exhaust processes of the cylinder 10 assembly.

[0110] According to an embodiment of the present invention, in a second aspect, a rotary fluid machine is provided, comprising the above-mentioned cylinder 10 assembly.

[0111] Since the rotary fluid machinery of the present application includes the above-mentioned cylinder 10 assembly, it has the same technical effect as the above-mentioned cylinder 10 assembly, and this embodiment will not be repeated.

[0112] Specifically, the rotary fluid machinery includes but is not limited to a rotary compressor, a rotary expander, a vane 30 compressor, a vane 30 expander, and the like.

[0113] According to an embodiment of the present invention, in a third aspect, an air conditioning device is provided, comprising the above-mentioned rotary fluid machinery.

[0114] Since the air conditioning equipment of the present application includes the above-mentioned rotary fluid machinery, it has the same technical effect as the above-mentioned rotary fluid machinery, and this embodiment will not be repeated.

[0115] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the present application.

Claims

1. A cylinder assembly, characterized in that: include: A cylinder (10) is provided with a working chamber, a vane slot (13) and a connecting channel (14) communicating with the working chamber, wherein the cylinder (10) has a first resonance muffler chamber (131) at one end of the vane slot (13) away from the working chamber; A roller (20) is rotatably disposed in the working chamber; A sliding plate (30) is connected to the roller (20), the sliding plate (30) is slidably arranged in the sliding plate groove (13), the sliding plate (30) is provided with a communicating vent hole (31) and a second resonance silencing cavity (32), the second resonance silencing cavity (32) is communicated with the first resonance silencing cavity (131), and the connecting point is located at the middle position of the total height of the sliding plate (30); When the roller (20) rotates in the working chamber to complete air intake and / or compression and exhaust, the roller (20) can drive the vent hole (31) to communicate with the connecting channel (14) through the sliding vane (30), so that part of the gas in the working chamber flows into the second resonant muffler chamber (32) and the first resonant muffler chamber (131) through the connecting channel (14).

2. The cylinder assembly according to claim 1, characterized in that: The working chamber comprises a compression chamber (12) and an air inlet chamber (11), the vent hole (31) is arranged on a side of the slide plate (30) facing the compression chamber (12), and the connecting channel (14) is in communication with the compression chamber (12); The cylinder assembly has a first position, a second position and a third position. In the first position, the roller (20) rotates to a position where air suction is cut off. In the second position, the roller (20) rotates to a position where the distance of the slide plate (30) extending into the working chamber reaches the longest. In the third position, the roller (20) rotates to a position where compression and exhaust are finished. In the process of switching the cylinder assembly from the first position to the second position, the slide plate (30) drives the vent hole (31) to be gradually connected with the connecting channel (14). In the process of switching the cylinder assembly from the second position to the third position, the slide plate (30) drives the vent hole (31) to be gradually disconnected from the connecting channel (14).

3. The cylinder assembly according to claim 2, characterized in that: Based on the cylinder assembly being in the first position, a distance S between the edge of the vent hole (31) close to the roller (20) and the connecting channel (14) is greater than or equal to 3.5 mm.

4. The cylinder assembly according to claim 2, characterized in that: The end of the slide (30) connected to the roller (20) is provided with a spherical head, and the roller (20) is provided with a spherical groove matched with the spherical head. The slide (30) and the roller (20) are hinged via the spherical head and the spherical groove.

5. The cylinder assembly according to claim 4, characterized in that: A pneumatic lubrication channel (33) is provided at one end of the sliding plate (30) close to the roller (20), one end of the pneumatic lubrication channel (33) is connected to the hinge gap between the spherical head and the spherical groove, and the other end of the pneumatic lubrication channel (33) is connected to the compression chamber (12).

6. The cylinder assembly according to any one of claims 1 to 5, characterized in that: The center of the vent hole (31) is located in the middle of the total height of the slide (30).

7. The cylinder assembly according to any one of claims 1 to 5, characterized in that: The total volume V of the first resonant muffler cavity (131) and the second resonant muffler cavity (32) satisfies the following relationship, in units of (Hertz): Wherein, d is the diameter of one end of the connecting channel (14) connected to the vent hole (31), c is the speed of sound in the refrigerant, and L is the depth of the vent hole (31).

8. The cylinder assembly according to any one of claims 1 to 5, characterized in that: The sliding plate (30) is made of a ceramic material and is configured as a hollow structure; the second resonance silencing cavity (32) is formed inside the sliding plate (30); and the vent hole (31) is formed on a side wall of the sliding plate (30).

9. The cylinder assembly according to any one of claims 1 to 5, characterized in that: The second resonant silencing chamber (32) extends along the length direction of the sliding plate (30), and one end of the second resonant silencing chamber (32) close to the roller (20) is closed, and one end of the second resonant silencing chamber (32) away from the roller (20) passes through the first resonant silencing chamber (131), and the vent hole (31) is connected to the center of the second resonant silencing chamber (32).

10. The cylinder assembly according to any one of claims 1 to 5, characterized in that The edge of at least one of the vent hole (31), the second resonance muffler cavity (32) and the connecting channel (14) is rounded or streamlined.

11. The cylinder assembly according to any one of claims 1 to 5, characterized in that The cylinder assembly further comprises an upper flange (50) and a lower flange (60), wherein the upper flange (50) and the lower flange (60) are respectively arranged on both sides of the cylinder (10), and the upper flange (50), the lower flange (60) and the cylinder (10) cooperate to form the sealed working chamber, the sliding vane groove (13), the first resonance muffler chamber (131) and the second resonance muffler chamber (32).

12. A rotary fluid machine, characterized in that: A cylinder assembly comprising any one of claims 1 to 11.

13. An air conditioning device, characterized in that: Including the rotary fluid machinery as described in claim 12.

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