Rotary compressor and air conditioner

Abstract

The utility model provides a kind of rotary compressor and air conditioner, including shaft, pump body and the flange plate of one end of the pump body, the shaft drives the pump body work, annular cover is provided on the flange plate around the shaft, the space between the annular cover and the flange plate includes annular cavity around the shaft, multiple sub-cavities are included in the annular cavity, multiple damping particles are provided in the annular cavity, multiple damping particles are distributed in multiple sub-cavities, to be able to solve the damping of rotary compressor in existing structure sets up damping particle damping effect poor technical problem.

Description

Technical Field

[0001] This utility model belongs to the field of compressor technology, specifically relating to a rotary compressor and an air conditioner. Background Technology

[0002] As people's living standards improve, higher requirements are placed on the noise level of air conditioners. As the core component and main noise source of air conditioners, the vibration reduction and noise reduction of the compressor are particularly important. When a rotary compressor is running, the pressure change of the refrigerant in the pump body during compression generates vibration excitation. The excitation force acts on the pump body, causing the entire pump body assembly to swing, generating significant vibration noise, which has a significant impact on the performance and reliability of the rotary compressor.

[0003] In the existing technology, a cavity is usually set in the cylinder of the pump body or in the balance block of the rotor, and damping particles are set in the cavity. However, the cavity volume of this method is small, and the vibration reduction effect on the compressor is limited.

[0004] How to effectively improve the vibration reduction effect of using damping particles on rotary compressors is a technical problem that urgently needs to be solved. Utility Model Content

[0005] Therefore, this utility model provides a rotary compressor and an air conditioner that can solve the technical problem of poor vibration reduction effect of setting damping particles in the existing structure for rotary compressors.

[0006] This utility model provides a rotary compressor, including a rotating shaft, a pump body, and a flange at one end of the pump body. The rotating shaft drives the pump body to work. An annular cover surrounding the rotating shaft is provided on the flange. The space between the annular cover and the flange includes an annular cavity surrounding the rotating shaft. The annular cavity includes multiple sub-cavities. Multiple damping particles are provided in the annular cavity and distributed in the multiple sub-cavities.

[0007] In some embodiments, multiple damping particles are uniformly distributed within multiple sub-cavities.

[0008] In some embodiments, the plurality of sub-cavities include a plurality of first intervals sequentially distributed along the axial direction of the rotating shaft, the first intervals being annular around the rotating shaft.

[0009] In some embodiments, the plurality of sub-cavities include a plurality of second intervals sequentially distributed along the circumferential direction of the rotating shaft, the plurality of second intervals being spliced ​​together to form an annulus around the rotating shaft.

[0010] In some embodiments, the mass of the pump body is M1, the total mass of the damping particles is M2, and 0.1 ≤ M2 / M1 ≤ 0.9.

[0011] In some embodiments, the maximum particle size of each damping particle is d1, where 0.1 mm ≤ d1 ≤ 4 mm.

[0012] In some embodiments, the maximum particle size of the damping particles is d2, where 0.1 mm ≤ d2 ≤ 2 mm.

[0013] In some embodiments, the damping particles are made of metal, and the density of the damping particles is ρ, where ρ ≥ 2 × 10⁻⁶. 3 Kg / m 3 .

[0014] In some embodiments, the rotary compressor is provided with a silencer cover, the annular cover covers the silencer cover, a silencer cavity is formed between the silencer cover and the flange, and the annular cavity is formed between the annular cover and the silencer cover.

[0015] This utility model also provides an air conditioner, including the aforementioned rotary compressor.

[0016] This invention achieves vibration reduction for rotary compressors by installing an annular cover on the outside of the flange, forming an annular cavity with the flange. Multiple sub-cavities are set within the annular cavity, and damping particles are placed in each sub-cavity. Because the annular cavity is located outside the flange, rather than within the existing rotary compressor structure, and multiple sub-cavities are provided within the annular cavity with damping particles placed in multiple sub-cavities, the problem of excessive damping particles accumulating in a single cavity and thus having a weak vibration reduction effect for smaller vibrations can be avoided. Attached Figure Description

[0017] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of an embodiment of the present invention with no sound-absorbing cover and only a ring cover;

[0019] Figure 2 This is a schematic diagram of an embodiment of the present invention with a sound-absorbing cover and a ring cover;

[0020] Figure 3 This is a schematic diagram of an embodiment of the present invention where the annular cover is provided with multiple first intervals;

[0021] Figure 4 This is a schematic diagram of an embodiment of the present invention where the annular cover includes multiple second intervals;

[0022] Figure 5 This is an exploded view of the flange, silencer, annular cover, and bolts according to an embodiment of this utility model;

[0023] Figure 6 This is a schematic diagram of the annular cover according to an embodiment of the present utility model;

[0024] Figure 7 This is a schematic diagram of the pump body flange with a silencer installed and the annular cover removed, according to an embodiment of the present utility model.

[0025] The attached figures are labeled as follows:

[0026] 1. Shaft; 2. Pump body; 3. Flange; 4. Annular cavity; 5. Damping particles; 6. Sub-cavity; 7. Silencing cover; 8. Annular cover; 901. First compartment; 902. Second compartment. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0029] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0030] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0031] See also Figure 1-7 As shown, a rotary compressor includes a rotating shaft 1, a pump body 2, and a flange 3 at one end of the pump body. The rotating shaft 1 drives the pump body 2 to work. An annular cover 8 is provided on the flange 3, surrounding the rotating shaft 1. The space between the annular cover 8 and the flange 3 includes an annular cavity 4 surrounding the rotating shaft 1. The annular cavity 4 includes multiple sub-cavities 6. Multiple damping particles 5 are provided in the annular cavity 4, and the multiple damping particles 5 are distributed in the multiple sub-cavities 6.

[0032] This invention features an annular cover 8 on a flange 3, with multiple sub-cavities 6 within the annular cavity formed between the annular cover 8 and the flange 3. Multiple damping particles 5 are disposed within these sub-cavities 6. On one hand, the annular cavity 4 is located outside the existing pump body 2 and flange 3, allowing for a larger volume to accommodate more damping particles 5. The arrangement of multiple damping particles 5 within multiple sub-cavities 6 avoids the situation where damping particles 5 are confined to a single cavity, preventing the bottom particles from effectively vibrating and absorbing the vibration energy generated by the rotary compressor. This improves the vibration reduction effect of the damping particles 5 on the rotary compressor.

[0033] Preferred, such as Figure 3 As shown, multiple damping particles 5 are uniformly distributed within multiple sub-cavities 6.

[0034] The damping particles 5 are evenly distributed, which allows more damping particles 5 to exert their vibration reduction effect.

[0035] Preferred, such as Figure 3 As shown, the multiple sub-cavities 6 include multiple first intervals 901 distributed sequentially along the axial direction of the rotating shaft 1, wherein the first intervals 901 are annular around the rotating shaft 1.

[0036] By including multiple first intervals 901 as described above in the subspace, better vibration reduction can be achieved for the rotary compressor in the axial direction (the axial direction in this application refers to the axial direction of the rotating shaft 1, and the radial direction in this application refers to the radial direction of the rotating shaft 1).

[0037] Preferred, such as Figure 4 As shown, the multiple sub-cavities 6 include multiple second intervals 902 distributed sequentially along the circumferential direction of the rotating shaft 1, and the multiple second intervals 902 are spliced ​​together to form a ring around the rotating shaft 1.

[0038] By including multiple second intervals 902 as described above in the subspace, better vibration damping of the rotary compressor in the radial direction is achieved.

[0039] By setting the first interval 901 and the second interval 902, when the vibration of the rotary compressor is small, the damping particles 5 in each of the first interval 901 and the second interval 902 can (most of them can) vibrate, thus achieving effective vibration reduction. That is, when the vibration is small, if a large number of damping particles 5 are piled up deeply, the damping particles 5 that are squeezed at the bottom will have difficulty vibrating, or the vibration amplitude will be small, resulting in poor vibration reduction effect.

[0040] Preferably, the mass of the pump body 2 is M1, the total mass of the damping particles 5 is M2, and 0.1≤M2 / M1≤0.9.

[0041] The pump body 2 has a mass of M1, and the total mass of the damping particles 5 is M2. 0.1≤M2 / M1≤0.9. When the total mass of the damping particles 5 meets the condition of 0.1≤M2 / M1≤0.9, the damping particles 5 have a good vibration reduction effect on the rotary compressor.

[0042] Preferably, the maximum particle size of each damping particle 5 is d1, where 0.1 mm ≤ d1 ≤ 4 mm.

[0043] The maximum particle size of the damping particles 5 is d1, where 0.1mm ≤ d1 ≤ 4mm. When the maximum particle size of each damping particle 5 meets the condition of 0.1mm ≤ d1 ≤ 4mm, the damping particles 5 have a good vibration reduction effect on the rotary compressor.

[0044] Furthermore, the damping particles 5 are spherical.

[0045] Preferably, the maximum particle size of the damping particle 5 is d2, where 0.1mm ≤ d2 ≤ 2mm.

[0046] Setting multiple damping particles 5 with a maximum particle size of d2, and further ensuring that 0.1mm≤d2≤2mm, allows for the placement of a larger number of damping particles 5 within the sub-cavity 6, thereby achieving a better vibration reduction effect.

[0047] Preferably, the damping particle 5 is made of metal, and the density of the damping particle 5 is ρ, where ρ ≥ 2 × 10³ kg / m³.

[0048] The damping particle 5 is made of metal and has a density of ρ, which is ≥2×103Kg / m3. The fact that the damping particle 5 is made of metal and has a density that meets the requirement of ρ≥2×103Kg / m3 can effectively prevent the external volume from being too large.

[0049] Furthermore, a flexible layer is provided on the inner wall of the annular cover 8.

[0050] Preferred, such as Figure 2 As shown, the rotary compressor is provided with a silencer 7, and the annular cover 8 covers the silencer 7. A silencer cavity is formed between the silencer 7 and the flange 3, and the annular cavity 4 is formed between the annular cover 8 and the silencer 7.

[0051] By covering the silencer 7 with the annular cover 8, and thus covering the annular cavity 4 with the silencer 7, the damping particles 5 inside the annular cavity 4 can not only reduce vibration, but also block the propagation of sound to a certain extent, thus achieving the effect of noise reduction.

[0052] The annular cover 8 and the silencer cover 7 are fixed to the pump body 2 by bolts. The space formed between the annular cover 8 and the flange 3, or between the annular cover 8 and the silencer cover 7, is a sealed space.

[0053] When pump body 2 is working, it is prone to vibration in the 1000-2000Hz frequency range and transmits the vibration to the outside. The NOPD vibration reduction structure can absorb the vibration of the silencer 7, reduce the transmission of vibration, and reduce the vibration and noise of pump body 2. The vibration generated by pump body 2 has been transmitted to damping particles 5 through flange 3 and silencer. The damping particles 5 jump themselves and collide and rub against each other, thereby achieving the purpose of consuming vibration energy and effectively reducing the vibration of pump body 2.

[0054] NOPD (Non-blocking Particle Damping) technology utilizes the damping properties of particulate materials to dissipate vibrational energy. When a structure vibrates, the particles filling the structure (such as metal, ceramic, or polymer particles) undergo relative motion due to inertia. Friction, collisions, and plastic deformation between particles are converted into heat energy and dissipated, thereby suppressing structural vibration. This process requires no external energy input, and the particle filling does not block the original functions of the structure (such as fluid channels or moving parts), hence the name "non-blocking."

[0055] The annular cover 8 of this application does not require any modification to the original structure of the pump body 2 and the compressor, which is beneficial for improving the existing rotary compressor and reducing costs.

[0056] Furthermore, when the rotary compressor is working, the rotating shaft 1 is in a vertical direction, and the annular cover 8 covers the flange 3 below the pump body 2. The annular cover 8 and the damping particles 5 can mainly weaken the vibration of the lower part of the pump body 2 assembly, thereby reducing the vibration and noise of the rotary compressor.

[0057] An air conditioner includes the aforementioned rotary compressor.

[0058] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0059] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A rotary compressor, comprising a rotating shaft (1), a pump body (2), and a flange (3) at one end of the pump body, wherein the rotating shaft (1) drives the pump body (2) to operate, characterized in that, An annular cover (8) surrounding the rotating shaft (1) is provided on the flange (3). The space between the annular cover (8) and the flange (3) includes an annular cavity (4) surrounding the rotating shaft (1). The annular cavity (4) includes multiple sub-cavities (6). Multiple damping particles (5) are provided in the annular cavity (4). The multiple damping particles (5) are distributed in the multiple sub-cavities (6).

2. The rotary compressor according to claim 1, characterized in that, Multiple damping particles (5) are uniformly distributed in multiple sub-cavities (6).

3. The rotary compressor according to claim 1, characterized in that, The plurality of sub-cavities (6) include a plurality of first intervals (901) sequentially distributed along the axial direction of the rotating shaft (1), the first intervals (901) being annular around the rotating shaft (1).

4. The rotary compressor according to claim 1, characterized in that, The multiple sub-cavities (6) include multiple second intervals (902) sequentially distributed along the circumferential direction of the rotating shaft (1), and the multiple second intervals (902) are spliced ​​together to form an annulus around the rotating shaft (1).

5. The rotary compressor according to claim 1, characterized in that, The pump body (2) has a mass of M1, and the total mass of the damping particles (5) is M2, where 0.1 ≤ M2 / M1 ≤ 0.

9.

6. The rotary compressor according to claim 1, characterized in that, The maximum particle size of each damping particle (5) is d1, 0.1 mm ≤ d1 ≤ 4 mm.

7. The rotary compressor according to claim 6, characterized in that, The maximum particle size of the damping particles (5) is d2, 0.1mm≤d2≤2mm.

8. The rotary compressor according to claim 1, characterized in that, The damping particles (5) are made of metal and have a density of ρ, where ρ ≥ 2 × 10³ kg / m³.

9. The rotary compressor according to claim 1, characterized in that, The rotary compressor is provided with a silencer cover (7), and the annular cover (8) covers the silencer cover (7). A silencer cavity is formed between the silencer cover (7) and the flange (3), and the annular cavity (4) is formed between the annular cover (8) and the silencer cover (7).

10. An air conditioner, characterized in that, Includes the rotary compressor as described in any one of claims 1-9.

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