Balance block, compressor and air conditioner applying same

Abstract

The invention discloses a balance block, a compressor and an air conditioner applying the same, the balance block comprises a base plate part, a balance weight part and a flow guide hole unit, the balance weight part is arranged at the top of the base plate part and extends in the axial direction on one side of the top of the base plate part; the outer wall and the inner wall of the balance weight part are arc-shaped, the flow guide hole unit is formed in the balance weight part and comprises a first flow guide hole and a second flow guide hole which penetrate through the outer wall and the inner wall, and the first flow guide hole and the second flow guide hole are arranged in an axial symmetry mode so that gas flowing in through the first flow guide hole can flow out through the second flow guide hole. According to the flow guide hole unit, airflow flows in through the first flow guide holes and then flows out of the symmetrical second flow guide holes in a directional mode, so that part of gas does not need to continuously impact the outer wall of the balance block to cause resistance loss, the gas resistance loss borne by the outer wall and the inner wall of the balance block is effectively reduced, and then vibration generated during operation of the compressor is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioners, and particularly relates to a balance weight, a compressor, and an air conditioner applying the same. Background Art

[0002] Compared with other positive displacement compressors, scroll compressors have many advantages, such as small size, light weight, few wearing parts, and high reliability. They are recognized as the most advanced third-generation compressors in terms of technology. The unique performance of scroll compressors makes them widely used, mainly in the fields of air conditioners, heat pumps, refrigeration, and freezing.

[0003] A scroll compressor usually consists of a fixed scroll member and a moving scroll member that form a compression mechanism. The moving scroll member is axially constrained by a bearing housing or a thrust plate and performs translational rotation relative to the fixed scroll member under the drive of an eccentric member. When the compressor operates, the rotation of the eccentric member generates centrifugal force or centrifugal torque, resulting in the vibration of the compressor. The balance weight in the scroll compressor is mainly used to reduce or eliminate the vibration caused by the unbalanced force generated during the operation of the compressor. These unbalanced forces are mainly caused by the uneven mass distribution of the internal moving parts of the compressor and the asymmetric flow of gas during the compression process. By installing a balance weight, the vibration level of the compressor can be effectively reduced, and the smoothness and reliability of the compressor operation can be improved. However, there is an interaction between the balance weight and the fluid in its working area, so it will be subject to gas resistance torques such as frictional resistance torque and pressure difference resistance torque, and as the rotor speed increases, the resistance loss of the balance weight will be greater. Therefore, by optimizing the balance weight to reduce the resistance loss of the balance weight during the actual operation of the compressor, the performance of the compressor can be significantly improved.

[0004] Traditional balance weights generally include an installation part and a counterweight part, and its counterweight part is composed of multiple arc surfaces to reduce the gas resistance received by the balance weight. However, the effect of the arc surface in reducing resistance is limited and cannot achieve the effect of reducing the vibration of the compressor during operation. Summary of the Invention

[0005] In view of this, the present invention provides a balance weight, a compressor, and an air conditioner applying the same, which solve the technical problem that the traditional balance weight has limited effect in reducing resistance and cannot reduce the vibration of the compressor.

[0006] To solve the above problems, according to one aspect of the present application, an embodiment of the present invention provides a balance weight, which includes: a substrate part, a counterweight part, and a flow guiding hole unit. The counterweight part is arranged on the top of the substrate part and extends axially along one side of the top of the substrate part; the outer wall and the inner wall of the counterweight part are both arc-shaped, and the flow guiding hole unit is opened on the counterweight part, which includes a first flow guiding hole and a second flow guiding hole that penetrate the outer wall and the inner wall. The first flow guiding hole and the second flow guiding hole are axially symmetrically arranged so that the gas flowing in through the first flow guiding hole can flow out through the second flow guiding hole.

[0007] In some embodiments, the substrate part includes a first installation wall, a second installation wall, a substrate windward surface, and a substrate leeward surface. The first installation wall is connected to the bottom of the counterweight part. One end of the first installation wall is connected to one end of the second installation wall through the substrate windward surface, and the other end of the first installation wall is connected to the other end of the second installation wall through the substrate leeward surface; wherein, both the substrate windward surface and the substrate leeward surface are inclined surfaces.

[0008] In some embodiments, a counterweight windward surface is formed between one end of the outer wall and one end of the inner wall. The counterweight windward surface and the substrate windward surface are on the same side; and the cross-section of the counterweight windward surface is a streamlined structure.

[0009] In some embodiments, the counterweight windward surface includes a first connecting arc, a second connecting arc, and a third connecting arc. One end of the outer wall, the first connecting arc, the second connecting arc, the third connecting arc, and one end of the inner wall are connected in sequence; wherein, the radius R1 of the first connecting arc, the radius R2 of the second connecting arc, and the radius R3 of the third connecting arc satisfy: R3 > R2 > R1.

[0010] In some embodiments, a counterweight leeward surface is formed between the other end of the outer wall and the other end of the inner wall. The counterweight leeward surface and the substrate leeward surface are on the same side; the end surface of the counterweight leeward surface includes a plurality of discontinuous surfaces.

[0011] In some embodiments, the end surface of the counterweight leeward surface is triangular serrated. In the triangular serrations, the included angle α between two adjacent inclined surfaces satisfies: 15° ≤ α ≤ 75°, the serration height G of the triangular serrations satisfies: 0.5 mm ≤ G ≤ 10 mm, and the tooth pitch H satisfies: 0.5 mm ≤ H ≤ 10 mm;

[0012] Or the end surface of the counterweight leeward surface is trapezoidal serrated.

[0013] In some embodiments, multiple groups of the flow guiding hole units are provided, and the multiple groups of the flow guiding hole units are distributed axially.

[0014] In some embodiments, the first diversion hole and the second diversion hole are one of circular, rectangular or elliptical; when the first diversion hole and the second diversion hole are circular, their aperture diameters are between 0.5 mm and 15 mm.

[0015] According to another aspect of the present application, an embodiment of the present invention provides a compressor, the compressor includes a crankshaft and the above-mentioned balance weight, the substrate portion has a mounting hole, the crankshaft is located in the mounting hole, and the rotation of the crankshaft can drive the balance weight to rotate.

[0016] According to another aspect of the present application, an embodiment of the present invention provides an air conditioner, the air conditioner includes the above-mentioned compressor.

[0017] Compared with the prior art, the balance weight of the present invention has at least the following beneficial effects:

[0018] The balance weight provided by the present invention includes: a substrate portion, a weight portion and a diversion hole unit. The weight portion is arranged on the top of the substrate portion and extends axially along one side of the top of the substrate portion; the outer wall and the inner wall of the weight portion are both arc-shaped. The diversion hole unit is opened on the weight portion, and it includes a first diversion hole and a second diversion hole that penetrate the outer wall and the inner wall. The first diversion hole and the second diversion hole are arranged axially symmetrically so that the gas flowing in through the first diversion hole can flow out through the second diversion hole.

[0019] Traditional balance weights only rely on the arc surface to reduce resistance, but there are still significant air flow separation and pressure fluctuations during high-speed rotation. In this embodiment, a through-flow channel is formed through the diversion hole unit, so that the air flow flows in through the first diversion hole and then flows out directionally through the symmetric second diversion hole, forming a controllable fluid path, effectively dispersing the pressure difference and reducing the turbulent energy dissipation. Moreover, the symmetric layout of the first diversion hole and the second diversion hole avoids the moment imbalance caused by the unilateral air flow impact. At the same time, the arc-shaped inner and outer walls further smooth the flow field. The two work together to upgrade the resistance loss from the traditional passive surface drag reduction to the active flow field regulation, significantly reducing the gas resistance at high rotational speeds, and thus reducing the vibration generated during the operation of the compressor.

[0020] The balance weight provided by the present invention is designed based on the above-mentioned pump body structure, and its beneficial effects can be referred to the beneficial effects of the above-mentioned balance weight, which will not be elaborated here one by one.

[0021] The air conditioner provided by the present invention is designed based on the above-mentioned compressor, and its beneficial effects can be referred to the beneficial effects of the above-mentioned compressor, which will not be elaborated here one by one.

[0022] The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly and be able to implement it according to the content of the specification, the following describes the preferred embodiments of the present invention in detail in conjunction with the accompanying drawings. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0024] Figure 1 It is a schematic structural view of a balance weight provided by an embodiment of the present invention;

[0025] Figure 2 is Figure 1 The partial enlarged view at A in;

[0026] Figure 3 is Figure 1 The partial enlarged view at B in;

[0027] Figure 4 It is a top view of a balance weight provided by an embodiment of the present invention;

[0028] Figure 5 It is a transverse sectional view of the windward surface of the counterweight in a balance weight provided by an embodiment of the present invention;

[0029] Figure 6 It is a side view of a balance weight provided by an embodiment of the present invention when the leeward surface of the counterweight is triangular serrated;

[0030] Figure 7 is Figure 6 The partial enlarged view at C in;

[0031] Figure 8 It is a side view of a balance weight provided by an embodiment of the present invention when the leeward surface of the counterweight is trapezoidal serrated;

[0032] Figure 9 It is a schematic structural view of a balance weight and a crankshaft after being matched provided by an embodiment of the present invention;

[0033] Figure 10 It is a schematic structural view of a traditional compressor.

[0034] Wherein:

[0035] 1. Balancing weight; 11. Substrate part; 111. First mounting wall; 112. Second mounting wall; 113. Windward side of the substrate; 114. Leeward side of the substrate; 12. Counterweight part; 121. Outer wall; 122. Inner wall; 123. Windward side of the counterweight; 124. Leeward side of the counterweight; 1231. First connecting arc; 1232. Second connecting arc; 1233. Third connecting arc; 13. Flow guiding hole unit; 131. First flow guiding hole; 132. Second flow guiding hole; 2. Crankshaft; 3. Housing assembly; 4. Stator assembly; 5. Rotor assembly; 6. Bracket; 7. Moving disk assembly; 8. Static disk assembly; 81. Static disk exhaust port; 9. Upper cover assembly; 91. Upper cover suction pipe. Detailed implementation manners

[0036] To further elaborate on the technical means and effects adopted by the present invention to achieve the intended invention purpose, the following describes in detail the specific implementation manners, structures, features, and effects of the present invention application in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. In addition, the specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0037] In the description of the present invention, it should be clear that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence; the terms "vertical", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "horizontal", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention, rather than meaning that the indicated device or element must have a specific orientation or position, so it cannot be understood as a limitation to the present invention.

[0038] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Embodiment 1

[0040] This embodiment provides a balancing weight, as Figure 1-8As shown in the figure, the balance weight includes: a substrate portion 11, a counterweight portion 12, and a flow guiding hole unit 13. The counterweight portion 12 is disposed on the top of the substrate portion 11 and extends axially along one side of the top of the substrate portion 11. The outer wall 121 and the inner wall 122 of the counterweight portion 12 are both arc-shaped. The flow guiding hole unit 13 is formed in the counterweight portion 12 and includes a first flow guiding hole 131 and a second flow guiding hole 132 that penetrate the outer wall 121 and the inner wall 122. The first flow guiding hole 131 and the second flow guiding hole 132 are axially symmetrically arranged so that the gas flowing in through the first flow guiding hole 131 can flow out through the second flow guiding hole 132.

[0041] The substrate portion 11 serves as the installation base of the balance weight 1, and its shape matches the geometric characteristics of the rotating components of the compressor (such as the eccentric shaft or the bearing housing). Its general shape can be a disc shape or an annular structure to provide stable axial support and adapt to the installation space. The substrate portion 11 is used to connect with the rotor assembly or the drive shaft of the compressor to ensure the structural stability of the balance weight 1 during high-speed rotation. Its core function is to provide mechanical support and transmit the inertial force generated by the balance weight 1 to offset the unbalanced torque of the moving components. The counterweight portion 12 provides mass distribution through axial extension and is used to balance the centrifugal force and centrifugal torque generated by the eccentric components of the compressor. The design of its mass distribution directly affects the cancellation effect on the vibration source. The flow guiding hole unit 13 includes the first flow guiding hole 131 and the second flow guiding hole 132 arranged symmetrically. By penetrating the outer wall 121 and the inner wall 122 of the counterweight portion 12, it guides the fluid to form a directional flow path around the balance weight. Its function is to reduce the interaction force between the balance weight and the fluid during high-speed rotation, and reduce the pressure difference resistance and turbulent loss. The outer wall 121 and the inner wall 122 of the counterweight portion 12 are both arc-shaped. On the one hand, the arc-shaped surface can reduce the air flow separation and vortex generation, avoid the formation of local high-pressure areas, thereby reducing the frictional resistance torque and the pressure difference resistance torque. And the arc-shaped profile helps to achieve a better counterweight distribution in a limited space, balance the centrifugal force while maintaining the structural compactness. On the other hand, the arc-shaped setting enables the gas flowing in through the first flow guiding hole 131 to flow out through the second flow guiding hole 132.

[0042] Traditional balance weights only rely on the arc surface to reduce resistance, but there are still significant air flow separation and pressure fluctuations during high-speed rotation. In this embodiment, a through-flow channel is formed by the flow guiding hole unit 13, so that the air flow flows in through the first flow guiding hole 131 and then flows out directionally from the symmetric second flow guiding hole 132, forming a controllable fluid path, effectively dispersing the pressure difference and reducing the turbulent energy dissipation. Moreover, the symmetric layout of the first flow guiding hole 131 and the second flow guiding hole 132 avoids the torque imbalance caused by the unilateral air flow impact. At the same time, the arc-shaped inner and outer walls further smooth the flow field. The two work together to upgrade the resistance loss from the traditional passive surface drag reduction to the active flow field regulation, significantly reducing the gas resistance at high rotational speeds, and thus reducing the vibration generated during the operation of the compressor.

[0043] In a specific embodiment, the substrate portion 11 includes a first mounting wall 111, a second mounting wall 112, a substrate windward surface 113, and a substrate leeward surface 114. The first mounting wall 111 is connected to the bottom of the counterweight portion 12. One end of the first mounting wall 111 is connected to one end of the second mounting wall 112 through the substrate windward surface 113, and the other end of the first mounting wall 111 is connected to the other end of the second mounting wall 112 through the substrate leeward surface 114. Among them, both the substrate windward surface 113 and the substrate leeward surface 114 are inclined surfaces.

[0044] In the above structure, the first mounting wall 111, the second mounting wall 112, the substrate windward surface 113, and the substrate leeward surface 114 enclose a structure with a closed side. The side is enclosed by four parts, namely the relatively arranged first mounting wall 111 and second mounting wall 112, and the relatively arranged substrate windward surface 113 and substrate leeward surface 114. Among them, the first mounting wall 111 and the counterweight portion 12 are arranged vertically opposite to each other.

[0045] In this embodiment, the substrate windward surface 113 and the substrate leeward surface 114 are designed as inclined surfaces. Compared with the traditional planar structure, the inclined surfaces can significantly optimize the air flow path. Specifically, the inclined surface design can avoid the sudden turning or separation of the air flow at the edge of the substrate, thereby reducing the turbulence and eddy currents generated by the air flow separation and reducing the resistance loss caused by the local pressure difference. The guiding effect of the inclined surface can also make the air flow flow more smoothly along the outer wall 121 and the second mounting wall 112, reducing the accumulation of the air flow at the corner and avoiding the formation of a local high-pressure area.

[0046] At the connection between the substrate windward surface of the planar structure of the traditional balance weight and the mounting wall, a right angle or an arc transition will be formed, resulting in the accumulation of the air flow due to inertia at this place and generating a high-resistance area, that is, the "air flow accumulation angle". The core function of the inclined surface design lies in: eliminating the air flow accumulation angle. The inclined surface replaces the right angle or the arc with a gradual angle, enabling the air flow to gradually change direction when contacting the substrate and avoiding the kinetic energy loss and local high pressure caused by sudden turning. Guiding the air flow to disperse, the inclined surface converts the kinetic energy of the air flow into the tangential flow along the outer wall 121 and the second mounting wall 112, and uses the fluid viscosity to drive the surrounding gas to accelerate and disperse, reducing the energy dissipation. Reducing the pressure difference resistance. When the air flow flows on the inclined surface, the pressure distribution is more uniform, avoiding the resistance moment formed by the front-back pressure difference of the traditional plane, thereby significantly reducing the overall resistance loss.

[0047] In a specific embodiment, a counterweight windward surface 123 is formed between one end of the outer wall 121 and one end of the inner wall 122. The counterweight windward surface 123 and the substrate windward surface 113 are on the same side; and the cross-section of the counterweight windward surface 123 is a streamlined structure.

[0048] In this embodiment, the cross-section of the weight windward surface 123 is defined as a streamline structure, which can make the flow of gas smoother. First of all, the streamline-shaped weight windward surface 123 can reduce the frictional resistance moment and pressure difference resistance moment when the gas contacts the balance weight. Especially during high-speed operation, it can effectively alleviate the resistance loss caused by the separation of the air flow on the traditional circular arc surface, thereby reducing the energy consumption during the operation of the compressor. Secondly, the streamline structure enables the gas to transition smoothly along the surface, avoiding the local vortices or backflows that may occur on the traditional circular arc surface, thus reducing the air resistance. Moreover, the streamline design reduces the turbulence and energy dissipation of the air flow on the surface of the weight part, enabling the gas to pass through the diversion hole unit 13 more efficiently and realizing the coherence of "inflow and outflow".

[0049] That is to say, by designing the cross-section of the weight windward surface 123 as a streamline structure, the frictional force and pressure difference resistance of the air flow on the surface of the object are reduced. The smooth and gradually transitioning shape allows the air flow to flow around the object more easily, rather than forming turbulence or vortices, thus reducing the air resistance.

[0050] The weight windward surface 123 includes a first connecting arc 1231, a second connecting arc 1232, and a third connecting arc 1233. One end of the outer wall 121, the first connecting arc 1231, the second connecting arc 1232, the third connecting arc 1233, and one end of the inner wall 122 are connected in sequence. Among them, the radii R1 of the first connecting arc 1231, R2 of the second connecting arc 1232, and R3 of the third connecting arc 1233 satisfy: R3 > R2 > R1.

[0051] In this embodiment, the first connecting arc 1231, the second connecting arc 1232, and the third connecting arc 1233 with increasing radii (R3 > R2 > R1) form a continuous transition surface with gradually decreasing curvature. This structure mimics the streamline characteristics of the leading edge of an airfoil in aerodynamics and can more effectively guide the smooth transition of the air flow, avoiding the flow separation phenomenon caused by sudden curvature changes. Compared with the design of traditional single circular arcs or abrupt surfaces, the structure of this embodiment significantly reduces the peeling and turbulence generation of the air flow on the surface of the weight windward surface 123. In addition, the first connecting arc 1231 (with the smallest R1) is located at the front end to quickly guide the air flow to turn with a large curvature; the second connecting arc 1232 (with medium R2) further eases the turning angle; the third connecting arc 1233 (with the largest R3) enables the air flow to flow towards the inner wall with an almost smooth curvature. This combination disperses the impact pressure of the air flow, avoids the concentration of local high-pressure areas, and reduces the generation of pressure difference resistance moments.

[0052] A counterweight leeward surface 124 is formed between the other ends of the outer wall 121 and the inner wall 122, and the counterweight leeward surface 124 is on the same side as the substrate leeward surface 114; the end face of the counterweight leeward surface 124 includes a plurality of discontinuous surfaces. As Figures 6-8 shown, the end face of the counterweight leeward surface 124 is triangular serrated or the end face of the counterweight leeward surface 124 is trapezoidal serrated.

[0053] When sound waves encounter a discontinuous surface (such as a serrated edge), diffraction occurs. This means that the sound waves will bypass the obstacle and generate a new wavefront. This process causes the sound waves originally concentrated in a certain specific frequency range to be dispersed into a wider frequency range. Specifically, the serrated structure can make the reflection and refraction path lengths at different positions different, resulting in changes in the sound wave phase. These changing phases interact to produce an interference effect, further making the sound energy distribution more uniform. In addition, the serrated shape can also change the sound wave propagation direction, reduce the energy concentration in certain specific directions, help reduce the peak noise level at certain frequencies, and thus achieve the diffusion of the overall noise spectrum. Therefore, by adopting a serrated design, the problem of single high-frequency noise can be effectively avoided, and the energy can be distributed over a wider frequency band to achieve a noise reduction effect.

[0054] In a specific embodiment, when the end face of the counterweight leeward surface 124 is triangular serrated, as Figure 7 shown, in the triangular serrations, the included angle α between two adjacent inclined surfaces satisfies: 15° ≤ α ≤ 75°, the serration height G of the triangular serrations satisfies: 0.5 mm ≤ G ≤ 10 mm, and the tooth pitch H satisfies: 0.5 mm ≤ H ≤ 10 mm.

[0055] The included angle α between two adjacent inclined surfaces affects the reflection path and phase difference of the sound waves on the serrated surface. A larger α may lead to more significant phase changes, but it is necessary to balance the structural strength and acoustic effect. For example, a smaller α may make the serrations sharper, increasing the diffraction effect, but may affect the structural stability, while a larger α may reduce diffraction but may affect the interference effect. In this embodiment, the limitation of 15° ≤ α ≤ 75° combines the balance of structural strength and acoustic effect, with a better effect. The serration height G directly affects the ability of the sound waves to bypass the obstacle. A higher G may enhance the diffraction effect and make the sound waves more effectively dispersed in different directions, but too high a G may increase the flow resistance or structural complexity. In this embodiment, the limitation of 0.5 mm ≤ G ≤ 10 mm avoids increasing the flow resistance and does not make the structure complex while ensuring the diffraction effect. The tooth pitch H affects the interference pattern between different serrations. A smaller H may lead to denser interference, while a larger H may reduce interference. In this embodiment, the limitation of 0.5 mm ≤ H ≤ 10 mm is the optimal pitch, which can balance the frequency dispersion effect.

[0056] After the combination of 15°≤α≤75°, 0.5mm≤G≤10mm and 0.5mm≤H≤10mm, the phase difference is controlled by α, the diffraction is enhanced by G, and the interference frequency is adjusted by H to form a multi-scale acoustic diffusion structure. The acoustic wave energy is dispersed into a wider frequency band, avoiding the concentration of single high-frequency noise and reducing the overall vibration level at the same time.

[0057] In a specific embodiment, multiple groups of the diversion hole units 13 are provided, and the multiple groups of the diversion hole units 13 are distributed axially. For example Figure 1 the diversion hole unit 13 in [reference] includes three groups, and the three first diversion holes 131 are located in the same column, and the three second diversion holes 132 are located in another column.

[0058] The axisymmetric design of the diversion hole unit 13 (the first diversion hole 131 and the second diversion hole 132 are symmetrically arranged) enables the gas to form a continuous flow path. The axial distribution of multiple groups of the diversion hole units 13 can further disperse the concentrated area of gas flow, reduce local turbulence and pressure difference resistance, thereby reducing the gas resistance moment received by the balance weight during high-speed rotation, and effectively reducing the energy loss caused by asymmetric gas flow. In addition, the axial distribution of multiple groups of the diversion hole units 13 helps to balance the acting force of the air flow at different axial positions and avoid the concentration of air flow impact force caused by a single diversion hole. By evenly dispersing the gas pressure, the centrifugal force fluctuation caused by uneven air flow can be reduced, and further the vibration level during the operation of the compressor can be reduced. Multiple groups of the diversion hole units 13 can also adjust the pressure difference between the windward surface 123 and the leeward surface 124 of the counterweight, relieve the pressure difference resistance moment generated by high-speed rotation, and thus reduce the friction loss. As the rotational speed of the rotor increases, the centrifugal force received by the balance weight 1 increases, and the gas resistance loss increases non-linearly. The distribution design of multiple groups of the diversion hole units 13 can delay the sharp rise of the resistance loss by dispersing the air flow load, enabling the compressor to still operate stably at high rotational speeds. This characteristic is particularly important for variable-frequency compressors because they need to adapt to a wide range of rotational speed changes.

[0059] In a specific embodiment, the first diversion hole 131 and the second diversion hole 132 are one of circular, rectangular or elliptical; when the first diversion hole 131 and the second diversion hole 132 are circular, their hole diameters are between 0.5mm and 15mm.

[0060] When the first diversion hole 131 and the second diversion hole 132 are circular, it can effectively reduce turbulence and flow resistance, making the gas flow smoother. When the first diversion hole 131 and the second diversion hole 132 are rectangular, the flow-through area of the rectangular cross-section is relatively large, which can increase the gas flow rate per unit time. When the first diversion hole 131 and the second diversion hole 132 are elliptical, the elliptical shape combines the characteristics of a circle and a rectangle, reducing the turbulence at the sharp edges and providing a relatively large effective flow-through area. Its streamlined structure can further reduce the pressure difference resistance and is applicable to working conditions with high requirements for both flow efficiency and resistance.

[0061] In addition, in this embodiment, it is specified that when the first diversion hole 131 and the second diversion hole 132 are circular, their aperture diameters are between 0.5 mm and 15 mm. When the balance block rotates to certain angles, the fluid inside the compressor (outside the balance block) can flow out from the diversion holes, playing a guiding role and not continuously impacting the wall surface of the counterweight part of the balance block, reducing the resistance. Different aperture diameters have different effects on reducing resistance.

[0062] Embodiment 2

[0063] This embodiment provides a compressor, as Figure 9 shown. The compressor includes a crankshaft 2 and the balance block 1 described in Embodiment 1. The base plate part 11 has a mounting hole, and the crankshaft 2 is located in the mounting hole. The rotation of the crankshaft 2 can drive the rotation of the balance block 1.

[0064] As Figure 10 shown, a scroll compressor generally includes a crankshaft 2, a housing assembly 3, a stator assembly 4, a rotor assembly 5, a bracket 6, a moving disk assembly 7, a stationary disk assembly 8, and an upper cover assembly 9. The stator assembly 4 and the rotor assembly 5 are collectively referred to as the motor assembly. During the operation of the scroll compressor, the refrigerant gas from the system enters the compressor through the upper cover suction pipe 91 of the upper cover assembly 9, is compressed into high-pressure gas through the compression chamber formed by the meshing between the moving disk assembly 7 and the stationary disk assembly 8, and is discharged through the stationary disk exhaust port 81 and out of the through-flow groove of the bracket 6 to the upper cavity of the motor assembly. The balance block 1 is installed on the crankshaft 2 and rotates with the crankshaft 2. At this time, it will disturb the high-pressure refrigerant gas, and the high-pressure refrigerant gas will also generate resistance to the balance block 1 and produce a certain amount of pneumatic noise.

[0065] However, in this embodiment, due to the combination of the balance block 1 in Embodiment 1, the synchronous optimization of vibration, noise, and energy consumption is achieved, while the operation reliability and energy efficiency are improved.

[0066] Embodiment 3

[0067] This embodiment provides an air conditioner, and the air conditioner includes the compressor described in Embodiment 2.

[0068] In summary, it is easily understandable to those skilled in the art that, on the premise of no conflict, the above-mentioned advantageous technical features can be freely combined and superimposed.

[0069] The above are only the preferred embodiments of the present invention, and do not impose any formal limitations on the present invention. Any simple modifications, equivalent changes and decorations made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solutions of the present invention.

Claims

1. A balance weight, characterized in that, The balance weight includes: a substrate portion, a counterweight portion, and a flow guiding hole unit. The counterweight portion is disposed on the top of the substrate portion and extends axially along one side of the top of the substrate portion. The outer wall and the inner wall of the counterweight portion are both arc-shaped. The flow guiding hole unit is formed on the counterweight portion and includes a first flow guiding hole and a second flow guiding hole that penetrate the outer wall and the inner wall. The first flow guiding hole and the second flow guiding hole are axially symmetrically arranged so that the gas flowing into through the first flow guiding hole can flow out through the second flow guiding hole.

2. The balance weight according to claim 1, characterized in that, The substrate portion includes a first mounting wall, a second mounting wall, a substrate windward surface, and a substrate leeward surface. The first mounting wall is connected to the bottom of the counterweight portion. One end of the first mounting wall is connected to one end of the second mounting wall through the substrate windward surface, and the other end of the first mounting wall is connected to the other end of the second mounting wall through the substrate leeward surface. Among them, both the substrate windward surface and the substrate leeward surface are inclined surfaces.

3. The balance weight according to claim 1, characterized in that, A counterweight windward surface is formed between one end of the outer wall and one end of the inner wall. The counterweight windward surface and the substrate windward surface are on the same side. And the cross-section of the counterweight windward surface is a streamlined structure.

4. The balance weight according to claim 3, characterized in that, The counterweight windward surface includes a first connecting arc, a second connecting arc, and a third connecting arc. One end of the outer wall, the first connecting arc, the second connecting arc, the third connecting arc, and one end of the inner wall are connected in sequence. Among them, the radius R1 of the first connecting arc, the radius R2 of the second connecting arc, and the radius R3 of the third connecting arc satisfy: R3 > R2 > R1.

5. The balance weight according to claim 1, wherein A counterweight leeward surface is formed between the other end of the outer wall and the other end of the inner wall. The counterweight leeward surface and the substrate leeward surface are on the same side. The end face of the counterweight leeward surface includes a plurality of discontinuous surfaces.

6. The balance weight according to claim 5, characterized in that, The end face of the counterweight leeward surface is triangular serrated. In the triangular serrations, the included angle α between two adjacent inclined surfaces satisfies: 15° ≤ α ≤ 75°. The serration height G of the triangular serrations satisfies: 0.5 mm ≤ G ≤ 10 mm, and the tooth pitch H satisfies: 0.5 mm ≤ H ≤ 10 mm. Or the end face of the counterweight leeward surface is trapezoidal serrated.

7. The balance weight according to claim 1, characterized in that, Multiple groups of the flow guiding hole units are formed, and the multiple groups of the flow guiding hole units are axially distributed.

8. The balance weight according to any one of claims 1-7, characterized in that, The first flow guiding hole and the second flow guiding hole are one of circular, rectangular, or elliptical. When the first flow guiding hole and the second flow guiding hole are circular, their aperture diameters are between 0.5 mm and 15 mm.

9. A compressor, characterized in that, The compressor includes a crankshaft and the balance weight according to any one of claims 1-8. The substrate portion is provided with a mounting hole, and the crankshaft is located in the mounting hole. The rotation of the crankshaft can drive the balance weight to rotate.

10. An air conditioner, characterized in that, The air conditioner includes the compressor according to claim 9.

Images