An oil suction assembly and a horizontal compressor

Abstract

This invention provides an oil suction assembly and a horizontal compressor. The oil suction assembly includes an oil suction pipe and a floating component. One end of the oil suction pipe is connected to the oil suction chamber of the horizontal compressor, and the other end extends towards the oil sump. The oil suction pipe has a first pipe section, a second pipe section, and a third pipe section connected sequentially from the oil suction chamber to the oil sump. The second pipe section is made of a flexible material. The floating component is connected to the end of the third pipe section away from the second pipe section, and the end of the third pipe section away from the second pipe section has an oil suction hole. This invention, by designing the oil suction pipe as a first pipe section, a second pipe section, and a third pipe section connected sequentially, and connecting the floating component to the third pipe section, utilizes the characteristic that the floating component can adaptively adjust its position according to changes in the oil level under the buoyancy of the refrigerant oil, and the flexibility and bendability of the second pipe section, to ensure that the oil suction hole always dynamically adjusts its spatial position with the oil level and maintains contact with the refrigerant oil when the compressor is tilted, effectively avoiding the occurrence of oil shortage.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and more specifically to an oil suction assembly and a horizontal compressor. Background Technology

[0002] Among the core components of automotive air conditioning systems, horizontal compressors have become the mainstream choice due to their compact structure and strong space adaptability. They are widely used in the air conditioning configurations of various passenger and commercial vehicles, providing crucial power support for regulating the temperature inside the vehicle. However, the special characteristics of the automotive environment pose severe challenges to their reliability. For example, when there are tilting errors during compressor installation, or when the vehicle travels on complex road conditions such as slopes, continuous curves, or bumpy roads, unstable refrigerant oil supply is prone to occur. This problem directly restricts the long-term reliable operation of horizontal compressors and has become a key technical bottleneck in the current upgrade and iteration process of automotive air conditioning systems.

[0003] Specifically, traditional horizontal compressors employ a rigid oil suction pipe design, with the pipe fixedly connected to the lower flange of the pump body. Its spatial orientation is entirely dependent on the compressor's installation position and cannot be adjusted independently. When the compressor tilts, the refrigerant oil inside the casing continues to accumulate horizontally under gravity, causing a significant angle between the oil suction port and the oil surface. If the suction port is in a high-oil-level area, air will be drawn in due to detachment from the oil layer, leading to oil cut-off. Oil cut-off directly disrupts the normal operation of the compressor's internal lubrication system. For example, the internal friction pairs of the pump body experience accelerated wear due to lack of effective lubrication, and air entering the system can easily cause cavitation damage, leading to sealing component failure and refrigerant leakage. Furthermore, lubrication failure can cause a significant drop in compressor efficiency and cooling capacity, and in severe cases, it can even cause internal compressor components to seize, ultimately leading to complete compressor failure. This not only affects the normal operation of the vehicle's air conditioning system but may also increase future maintenance costs and safety hazards.

[0004] To address the aforementioned issues, relevant improvement research has been conducted within the industry. For example, Chinese utility model patent CN219012874U discloses an oil supply assembly and compressor, which allows the oil suction pipe to rotate around its own axis to adapt to changes in the installation angle. This solution alleviates the oil supply problem to some extent under inclined conditions by ensuring that the oil suction pipe is always vertical. However, it cannot cover the common forward and backward tilting conditions during vehicle operation, such as the forward and backward tilting of the compressor due to changes in vehicle posture when going uphill or downhill. In these cases, the oil suction pipe may still separate from the oil surface, making it difficult to fundamentally solve the core problem of unstable refrigerant oil supply.

[0005] Therefore, there is an urgent need for an oil suction component that can achieve multi-angle dynamic adjustment, so that it can adaptively adjust the spatial position of the oil suction port according to the tilt direction and angle of the horizontal compressor under different operating conditions, ensuring that the oil suction port is always in contact with the refrigeration oil, so as to ensure the continuity and stability of oil supply. Utility Model Content

[0006] The purpose of this utility model is to overcome the defects of the prior art and provide an oil suction component and a horizontal compressor to solve the technical problem that the refrigerant oil supply is unstable when the traditional horizontal compressor is installed at an incline or travels on complex road conditions such as slopes and curves.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] In a first aspect, this utility model provides an oil suction assembly, comprising: an oil suction pipe and a floating component; one end of the oil suction pipe is used to connect to the oil suction chamber of a horizontal compressor, and the other end extends toward the oil sump; the oil suction pipe is provided with a first pipe section, a second pipe section and a third pipe section connected sequentially from the oil suction chamber to the oil sump, the second pipe section being made of a flexible material; the floating component is connected to the end of the third pipe section away from the second pipe section, and the end of the third pipe section away from the second pipe section is provided with an oil suction hole.

[0009] In one embodiment, the density of the floating element is less than the density of the refrigeration oil.

[0010] In one embodiment, the buoyancy of the floating element is greater than the sum of the weights of the second pipe segment, the third pipe segment, and the floating element.

[0011] In one embodiment, the floating element is hinged to the third pipe segment.

[0012] In one embodiment, the second pipe section is a corrugated pipe, which is sealed to the opening of the first pipe section and the opening of the third pipe section.

[0013] In one embodiment, it further includes: a limiting ring; the limiting ring wraps around the first pipe segment and the second pipe segment; the length of the limiting ring wrapping around the second pipe segment is 1 / 2 to 2 / 3 of the length of the second pipe segment.

[0014] In one embodiment, the number of oil suction holes is several, and the several oil suction holes are distributed in a circle on the third pipe section with the axis of the third pipe section as the center.

[0015] In one embodiment, the oil suction hole is inclinedly disposed on the third pipe segment, and the oil suction hole is inclined from the end of the third pipe segment away from the second pipe segment toward the second pipe segment.

[0016] In one embodiment, the angle between the axis of the oil suction hole and the axis of the third pipe section is 0° to 90°.

[0017] Secondly, this utility model provides a horizontal compressor, which includes the oil suction assembly as described above.

[0018] The beneficial effects of this utility model compared with the prior art are as follows: This utility model designs the oil suction pipe as a first pipe section, a second pipe section made of flexible material, and a third pipe section with an oil suction hole connected in sequence, and connects a floating component to the third pipe section. Utilizing the characteristic that the floating component can adaptively adjust its position according to changes in the oil level under the buoyancy of the refrigerant oil, and the flexibility and bendability of the second pipe section, the oil suction hole can always dynamically adjust its spatial position with the oil level and maintain contact with the refrigerant oil when the compressor is tilted. This effectively avoids the occurrence of oil cut-off, solves the problems of increased wear of the pump body friction pair, cavitation damage, and seal failure, ensuring the long-term reliable operation of the compressor, and preventing situations such as a sudden drop in cooling efficiency and failure of the entire machine. At the same time, it reduces the cost and safety hazards caused by maintenance, and provides key technical support for the stable operation of vehicle air conditioning systems under complex road conditions.

[0019] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this utility model more obvious and understandable, the following are preferred embodiments, which are described in detail below. Attached Figure Description

[0020] Figure 1 A schematic diagram of the structure of a horizontal compressor under horizontal operating conditions provided by this utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure at point NN;

[0022] Figure 3 A schematic diagram of the structure of a horizontal compressor provided by this utility model when it is tilted relative to the x-axis at angle c;

[0023] Figure 4 A schematic diagram of the structure of a horizontal compressor provided by this utility model when it is tilted relative to the y-axis at angle b;

[0024] Figure 5 This is a schematic diagram of the structure of an oil-absorbing component provided by this utility model;

[0025] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure at MM;

[0026] Figure 7 for Figure 6 A magnified structural diagram of point E.

[0027] Figure label:

[0028] 10. Horizontal compressor; 1. Oil suction assembly; 11. Oil suction pipe; 111. First pipe section; 112. Second pipe section; 113. Third pipe section; 1131. Oil suction hole; 12. Floating component; 2. Housing; 21. Oil sump; 3. Pump body; 31. Oil suction chamber; 32. Lower flange; 33. Crankshaft; 34. Motor. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] It should be understood that, when used in this specification and the appended claims, the terms “comprising” and “including” indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0031] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0032] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0033] Example 1

[0034] See Figure 1As shown, this embodiment discloses an oil suction assembly 1, which is applied to a horizontal compressor 10. More specifically, the casing 2 of the horizontal compressor 10 is provided with an oil sump 21 for containing refrigerant oil and a pump body 3 horizontally arranged above the oil sump 21. The pump body 3 has an oil suction chamber 31 at its end. The oil suction assembly 1 of this embodiment provides a passage between the oil sump 21 and the oil suction chamber 31 so that the pump body 3 can suck up refrigerant oil, thereby providing lubrication for the crankshaft 33 inside the pump body 3 and ensuring the smooth operation of the vehicle air conditioner.

[0035] Specifically, see Figures 1 to 7 The oil suction assembly 1 of this embodiment includes: an oil suction pipe 11 and a floating member 12; one end of the oil suction pipe 11 is used to connect to the oil suction chamber 31 of the horizontal compressor 10, and the other end extends towards the oil tank 21; the oil suction pipe 11 is provided with a first pipe section 111, a second pipe section 112 and a third pipe section 113 connected sequentially from the oil suction chamber 31 to the oil tank 21, the second pipe section 112 is made of flexible material; the floating member 12 is connected to the end of the third pipe section 113 away from the second pipe section 112, and the end of the third pipe section 113 away from the second pipe section 112 is provided with an oil suction hole 1131.

[0036] Understandably, in specific implementations, for example, when the vehicle is driving normally on a level surface, the second pipe section 112 and the third pipe section 113 remain drooping under their own weight, with the second pipe section 112 remaining naturally extended. The floating component 12 is suspended in the refrigeration oil, and the oil suction port 1131 is submerged below the oil surface. The pump body 3 can then draw refrigeration oil through the oil suction pipe 11 and the oil suction port 1131. When the vehicle is driving on an incline, or when there is an incline deviation in the installation of the oil suction pipe 11, see [reference needed]. Figure 3 and Figure 4 As shown, the horizontal compressor 10 is tilted at an angle b relative to the y-axis or at an angle c relative to the x-axis (where the length, width, and height directions of the horizontal compressor 10 are the x, y, and z axes, respectively). The floating part 12 is subjected to the force of gravity and the thrust caused by the oil surface fluctuation, and moves with the oil surface, thereby driving the third pipe section 113 to move synchronously. This causes the flexible material second pipe section 112 to undergo axial or radial deformation, that is, to produce tensile or compressive deformation, so that the oil suction hole 1131 on the third pipe section 113 is always submerged below the oil surface, ensuring a continuous supply of refrigeration oil.

[0037] In this embodiment, the oil suction assembly 1 is designed with the oil suction pipe 11 as a first pipe section 111, a second pipe section 112 made of flexible material, and a third pipe section 113 with an oil suction hole 1131 connected in sequence. A floating member 12 is connected to the third pipe section 113. By utilizing the characteristic that the floating member 12 can adaptively adjust its position according to the oil level change under the buoyancy of the refrigeration oil, and the flexibility and bendability of the second pipe section 112, the oil suction hole 1131 can always dynamically adjust its spatial position with the oil level and maintain contact with the refrigeration oil when the compressor is tilted. This effectively avoids the occurrence of oil cut-off. It not only solves the lubrication failure problems such as accelerated wear of the friction pair of the pump body 3, cavitation damage, and seal failure, but also ensures the long-term reliable operation of the compressor. It also prevents the sudden drop in refrigeration efficiency and the failure of the whole machine. At the same time, it reduces the cost and safety hazards caused by maintenance, and provides key technical support for the stable operation of the vehicle air conditioning system under complex road conditions.

[0038] It is understood that in this embodiment, both the first pipe section 111 and the third pipe section 113 are made of rigid material. That is, the first pipe section 111 and the third pipe section 113 have a certain degree of rigidity. The rigid material of the first pipe section 111 ensures the stability of the connection with the pump body 3, and the third pipe section 113 provides a certain weight to keep the oil suction pipe 11 on the oil surface, preventing the oil suction pipe 11 from detaching from the refrigeration oil. Moreover, the rigid pipe section can prevent the refrigeration oil delivery path from being blocked or damaged due to deformation, ensuring smooth delivery of refrigeration oil, providing continuous lubrication for the pump body 3 of the horizontal compressor 10, reducing component wear, and thus extending the service life of the horizontal compressor 10.

[0039] In a preferred embodiment, the first pipe section 111 and the third pipe section 113 are made of brass or stainless steel. Both brass and stainless steel have good processing properties, which facilitates the forming of the first pipe section 111 and the third pipe section 113. They can also effectively resist the corrosion of refrigeration oil, extend the service life of the pipe sections, and take into account both processing convenience and reliability, ensuring the long-term stable use of the oil suction assembly 1.

[0040] In a further embodiment, one end of the first pipe section 111 connected to the pump body 3 is arranged parallel to the length direction of the horizontal compressor 10, while the other end is bent towards the oil sump 21. It is understood that the second pipe section 112 and the third pipe section 113 droop downwards along the bending direction of the first pipe section 111. The bending design of the first pipe section 111 and the downward drooping arrangement of the second and third pipe sections 112 better adapt to the internal spatial structure of the compressor, allowing the oil suction pipe 11 to be more rationally arranged within the casing 2, avoiding interference with other components.

[0041] In a further embodiment, the bend in the first pipe section 111 is arc-shaped. The arc-shaped bend forms an arc transition structure, reducing the flow resistance of the refrigeration oil and further improving the smoothness of refrigeration oil delivery.

[0042] In a further embodiment, the density of the floating element 12 is less than or equal to the density of the refrigeration oil. This density provides buoyancy, allowing the floating element 12 to suspend in the refrigeration oil. It is understood that the density of the floating element 12 equals the density of the refrigeration oil, and combined with the weight of the second pipe section 112, the third pipe section 113, and its own weight, allows the floating element 12 to suspend in the refrigeration oil at a certain distance from the oil surface, for example, in the middle or deep layer of the refrigeration oil. However, the fluctuations in the middle or deep layer of the refrigeration oil are smaller under changing operating conditions, weakening the floating element 12's ability to sense changes in the oil surface and consequently slowing its response to these changes.

[0043] Therefore, in order for the floating element 12 to actively and quickly follow changes in the oil surface, in a preferred embodiment, such as this embodiment, the density of the floating element 12 is less than the density of the refrigeration oil. The lower density of the floating element 12 ensures that it provides sufficient net buoyancy under any operating condition. This net buoyancy not only overcomes the weight of the floating element 12 itself but also supports and drives the connected third pipe section 113 and second pipe section 112, ensuring that the end of the entire oil suction assembly 1 can sensitively and reliably follow the movement of the oil surface, thereby ensuring that the oil suction hole 1131 remains continuously submerged in the oil. More specifically, a lower density provides greater buoyancy. While ensuring it does not detach from the oil surface, the greater buoyancy allows the floating element 12 to suspend in an area not far below the oil surface, enabling it to sensitively sense changes in the oil surface and respond quickly to changes in the oil level, ensuring the continuity and stability of the oil supply.

[0044] In a further embodiment, the buoyancy of the floating component 12 is greater than the sum of the weights of the second pipe section 112, the third pipe section 113, and the floating component 12. Since the buoyancy of the floating component 12 is greater than the total weight of the second pipe section 112, the third pipe section 113, and the floating component 12, it effectively avoids dragging and sinking, preventing the end of the oil suction pipe 11 from being dragged downwards and making it difficult to sensitively detect and quickly respond to changes in the oil level. The buoyancy setting of the floating component 12 in this embodiment ensures that the oil suction hole 1131 is always submerged in the refrigerant oil, guaranteeing a continuous supply of refrigerant oil and preventing lubrication failure of the horizontal compressor 10 due to oil shortage, thus ensuring the normal operation of the horizontal compressor 10 and the cooling effect of the vehicle air conditioner.

[0045] In a further embodiment, the floating member 12 is hinged to the third pipe section 113. It is understood that the hinged connection of the floating member 12 to the third pipe section 113 includes, but is not limited to, being connected to the third pipe section 113 via a shaft, universal joint, hinge, or suspension ring. This hinged arrangement of the floating member 12 allows it to swing at a small angle relative to the third pipe section 113, effectively preventing jamming at the connection point. This allows the floating member 12 to adjust its position more flexibly according to changes in oil level and operating conditions, thereby ensuring that the oil suction hole 1131 of the third pipe section 113 is always in contact with the refrigeration oil, ensuring stable refrigeration oil delivery, and improving the adaptability and reliability of the oil suction assembly 1. Furthermore, the hinge point between the floating member 12 and the third pipe section 113 shares the degree of freedom required for the movement of the floating member 12, reducing the radial deflection amplitude that the second pipe section 112 needs to compensate for, and ensuring the service life of the second pipe section 112.

[0046] In a preferred embodiment, the floating element 12 is a sphere. The sphere is subjected to uniform force in the refrigeration oil, and can adjust its position more smoothly with changes in the oil level, making it less prone to tilting or jamming. At the same time, the surface of the sphere has no sharp edges, resulting in low resistance when in contact with the refrigeration oil, and flexible movement, which can better keep the third pipe section 113 in a suitable oil suction position and improve the stability of oil suction.

[0047] In a preferred embodiment, the surface of the floating element 12 is smooth. The smoothing treatment of the surface of the floating element 12 effectively prevents refrigeration oil from adhering to its surface, avoiding an increase in the weight of the floating element 12 due to refrigeration oil adhesion, which would affect its buoyancy and flexibility in response to changes in the oil level. This ensures that the floating element 12 can always accurately drive the third pipe section 113 to adjust its position, guaranteeing effective contact between the oil suction hole 1131 and the refrigeration oil, while also reducing refrigeration oil waste and lowering operating costs.

[0048] In a further embodiment, the second pipe section 112 is a bellows, which is sealed to the inlet of the first pipe section 111 and the inlet of the third pipe section 113. The sealed connection between the bellows and the first and third pipe sections 111 and 113 prevents leakage of refrigeration oil during transportation, ensuring that all refrigeration oil is delivered to the oil suction chamber 31, improving the utilization rate of refrigeration oil, and avoiding insufficient lubrication caused by refrigeration oil leakage. The bellows structure of the second pipe section 112 gives it good flexibility, enabling multi-angle deflection and axial expansion and contraction. Its deflection capacity is proportional to its length. Through the flexible deformation of the bellows, the floating component 12 and the oil suction port 1131 actively follow the changes in oil level, effectively solving the problem of the oil suction port 1131 detaching from the refrigeration oil under the tilting condition of the horizontal compressor 10, and significantly improving the stability of oil supply. In addition, the bellows structure can effectively absorb high-frequency vibrations. Specifically, under bumpy working conditions, the floating part 12 can fluctuate slightly with the oil surface, and the bellows absorbs vibration displacement through the axial deformation capability of compression or tension, suppressing the shaking of the oil suction hole 1131, further improving the stability of oil supply, maintaining the reliability of long-term operation of the air conditioning system, and ensuring the cooling capacity of the air conditioning system.

[0049] In a preferred embodiment, the bellows is made of stainless steel. Stainless steel bellows have excellent oil and corrosion resistance, adapting to the operating environment of refrigeration oil and extending its service life. Simultaneously, stainless steel's high strength allows for flexible deformation while withstanding certain pressure, ensuring that refrigeration oil will not leak due to bellows rupture during transport, thus guaranteeing the stable operation of the oil suction assembly 1.

[0050] In a further embodiment, the bellows is welded or screwed to the first pipe section 111 and the third pipe section 113. Welding and screwing have the characteristics of high connection strength, which can improve the structural stability of the oil suction pipe 11, enabling it to adapt to harsh working conditions such as high pressure and high vibration, ensuring that the bellows is firmly connected to other pipe sections and that the refrigeration oil does not leak; screwing connection has the advantages of convenient installation and disassembly, which facilitates the maintenance, repair and component replacement of the oil suction assembly 1 in the later stage. The two connection methods can be selected according to different working conditions, improving the applicability and maintainability of the oil suction assembly 1.

[0051] In a preferred embodiment, the bellows is brazed to the first pipe section 111 and the third pipe section 113. The brazing process allows the solder to fully fill the interface gaps, forming a continuous and dense weld. This ensures a stable connection between the bellows and the first and third pipe sections 111 and 113, while effectively preventing leakage of refrigeration oil from the interface during transport. Furthermore, the brazing process is suitable for connecting stainless steel bellows to brass / stainless steel first and third pipe sections 111 and 113, eliminating the need for additional complex connectors, simplifying the assembly process, and without affecting the smooth flow of refrigeration oil within the suction pipe 11.

[0052] In another preferred embodiment, the corrugated pipe is threadedly connected to the first pipe section 111 and the third pipe section 113. The threaded connection between the corrugated pipe and the first pipe section 111 and the third pipe section 113 is wrapped with oil-resistant PTFE tape or coated with sealant. The threaded connection facilitates later maintenance. When the corrugated pipe needs to be replaced due to aging or damage, it is not necessary to damage the first pipe section 111 and the third pipe section 113; the corrugated pipe can be replaced simply by disassembling it along the threads, reducing maintenance costs and downtime. The oil-resistant PTFE tape is made of polytetrafluoroethylene (PTFE). Both the oil-resistant PTFE tape and the sealant have excellent oil resistance and sealing properties, filling the thread gaps and preventing refrigerant oil from seeping out.

[0053] In a preferred embodiment, there are several oil suction holes 1131. The refrigerant oil in the oil sump 21 enters the third pipe section 113 simultaneously through several oil suction holes 1131, converges and flows through the second pipe section 112 and the first pipe section 111, and is finally delivered to the oil suction chamber 31. The design of multiple oil suction holes 1131 can increase the intake of refrigerant oil, ensure sufficient oil supply, and adapt to the high-speed, high-load horizontal compressor 10. In addition, when individual oil suction holes 1131 are blocked by impurities, the remaining oil suction holes 1131 can still draw oil normally, avoiding the risk of oil cut-off due to blockage of a single hole, improving the fault tolerance and reliability of the oil suction assembly 1, and reducing the probability of failure of the horizontal compressor 10 due to oil cut-off.

[0054] In a further embodiment, a plurality of oil suction holes 1131 are circumferentially distributed on the third pipe section 113 with the axis of the third pipe section 113 as the center. More specifically, the plurality of oil suction holes 1131 are evenly distributed on the third pipe section 113. The evenly spaced circumferentially distributed oil suction holes 1131 can uniformly draw in refrigerant oil from all sides of the third pipe section 113, avoiding the refrigerant oil deviation in the third pipe section 113 caused by oil suction in one direction, ensuring that the refrigerant oil flows smoothly in the third pipe section 113 and reducing pressure loss; when the compressor is tilted, the circumferentially distributed oil suction holes 1131 can be covered by refrigerant oil from multiple directions, thus adapting to the multi-directional tilt of the oil surface. Compared with single-sided opening, it can significantly improve the effective immersion rate of the oil suction holes 1131 and solve the oil cut-off problem under tilting conditions.

[0055] In a further embodiment, the oil suction hole 1131 is inclinedly disposed in the third pipe section 113, with the oil suction hole 1131 inclined from the end of the third pipe section 113 away from the second pipe section 112 towards the second pipe section 112. The inclination direction of the oil suction hole 1131 is consistent with the flow direction of the refrigeration oil in the third pipe section 113, which can prevent the refrigeration oil from changing direction when entering the oil suction hole 1131, reduce the loss caused by local resistance, and improve the flow rate and oil suction volume of the refrigeration oil.

[0056] In a further embodiment, the included angle between the axis of the oil suction hole 1131 and the axis of the third pipe segment 113 is 0° to 90°. As Figure 7 shown, 0° < a < 90°, where a is the included angle between the oil suction hole 1131 and the axis of the third pipe segment 113. The included angle range of 0° - 90° can cover various working conditions from stable to complex, such as inclination, high load, and low noise, and can balance the oil suction efficiency and the anti - oil interruption ability. When the working condition of the compressor changes, the included angle range of the oil suction hole 1131 can ensure that it can still effectively suck oil and avoid oil interruption faults caused by changes in working conditions.

[0057] Embodiment Two

[0058] Refer to Figures 1 to 7 shown. This embodiment discloses an oil suction component 1 based on Embodiment One. The difference from Embodiment One is that the oil suction component 1 of this embodiment further includes: a limiting ring (not shown); the limiting ring is sleeved outside the first pipe segment 111 and the second pipe segment 112; the length of the limiting ring wrapping the second pipe segment 112 accounts for 1 / 2 to 2 / 3 of the length of the second pipe segment 112. During assembly, first ensure the stable connection of the first pipe segment 111, the second pipe segment 112, and the third pipe segment 113, and then sleeve one end of the limiting ring in the area of the first pipe segment 111 close to the second pipe segment 112, and the other end extends to the outside of the second pipe segment 112. Finally, the length of the limiting ring wrapping the second pipe segment 112 accounts for 1 / 2 - 2 / 3 of the total length of the second pipe segment 112. The limiting ring wrapping 1 / 2 - 2 / 3 of the length of the second pipe segment 112 can limit the position when the second pipe segment 112 generates a large deflection due to inclination or vibration, avoid fatigue fracture of the bellows caused by excessive bending, and extend the service life of the bellows; and the limiting ring only limits the radial excessive deflection of the second pipe segment 112 and does not hinder its axial telescopic function, which can ensure that the bellows can still absorb vibration displacement through telescoping under bumpy working conditions and maintain the effect of actively adapting to the oil level change, taking into account both structural stability and oil supply continuity.

[0059] In a further embodiment, there is a gap of 2 - 3 mm between the limiting ring and the second pipe segment 112. The inner diameter of the limiting ring is 2 to 3 mm larger than the outer diameter of the second pipe segment 112, which can not only provide radial movement space for the second pipe segment 112 to meet the deformation requirements under normal inclination and vibration, avoid the bellows being stuck due to too small a gap, but also contact and limit the position when the bellows deflects excessively, preventing the bellows from breaking, and achieving the balance between the deformation and limitation of the bellows.

[0060] It is understood that in other embodiments, the inner cavity of the limiting ring can be set in a stepped shape. For example, the gap near the end of the first pipe segment 111 is 2.2 mm and the gap near the end of the third pipe segment 113 is 2.8 mm. This allows the large gap near the third pipe segment 113 to provide more room for the bellows to move, while the small gap near the first pipe segment 111 ensures small deformation and avoids the breakage of the connection between the first pipe segment 111 and the bellows, further ensuring the structural stability of the oil suction assembly 1.

[0061] In a preferred embodiment, the limiting ring is made of stainless steel. Stainless steel is resistant to corrosion from refrigeration oil and corrosive media in the environment, preventing the limiting ring from rusting and falling off. This avoids contamination of the refrigeration oil by the rusting of the limiting ring, ensuring that the crankshaft 33 inside the horizontal compressor 10 is not worn by rust and impurities. Furthermore, stainless steel has better tensile strength and rigidity than materials such as plastic and aluminum alloy, and can withstand the impact force when the bellows deflects without deformation, ensuring the long-term reliability of the limiting function.

[0062] Example 3

[0063] See Figures 1 to 7 As shown, this embodiment discloses a horizontal compressor 10, which includes the oil suction assembly 1 of embodiment one or embodiment two; the horizontal compressor 10 of this embodiment also includes: a housing 2 and a pump body 3; the housing 2 is provided with an oil sump 21 for containing refrigeration oil, and the pump body 3 is located in the housing 2 and above the oil sump 21; one end of the oil suction assembly 1 is connected to the pump body 3, and the other end extends into the oil sump 21.

[0064] Understandably, the refrigerant oil in the oil sump 21 inside the housing 2 enters through the oil suction hole 1131 of the third pipe section 113 of the oil suction assembly 1, flows through the second pipe section 112 and the first pipe section 111 in sequence, and is finally delivered to the oil suction chamber 31 of the pump body 3 to provide lubrication for the moving parts inside the pump body 3. After lubrication is completed, part of the oil flows back to the oil sump 21 to form a cycle.

[0065] The horizontal compressor 10 of this embodiment integrates the oil suction assembly 1 of Embodiment 1 or Embodiment 2. Through the combined effect of the rigid structure of the first pipe section 111 and the third pipe section 113, the flexible structure of the second pipe section 112, and the floating guide structure of the floating component 12, the oil cut-off problem under the tilting and bumping conditions of the traditional horizontal compressor 10 is fundamentally solved, ensuring the continuous lubrication of the pump body 3.

[0066] In a further embodiment, the pump body 3 includes a lower flange 32, a crankshaft 33, and a motor 34. An oil suction chamber 31 is located inside the lower flange 32. A first pipe section 111 is fixedly connected to the lower flange 32 and communicates with the oil suction chamber 31. The motor 34 is installed inside the housing 2. One end of the crankshaft 33 is connected to the motor 34, and the other end extends into the oil suction chamber 31. The refrigerant oil in the oil sump 21 enters the oil suction chamber 31 of the pump body 3 through the oil suction assembly 1. A portion of the refrigerant oil directly lubricates the crankshaft 33, while another portion is transported to the motor 34 through the oil passage of the lower flange 32. The lubricated oil is collected through the oil return hole of the lower flange 32 and flows back to the oil sump 21, completing the comprehensive lubrication of the moving parts of the pump body 3. Through the oil passage design of the lower flange 32, combined with the structural arrangement of the oil suction assembly 1, the refrigerant oil is delivered to the moving parts, avoiding the problem of insufficient lubrication of the pump body 3 of the horizontal compressor 10, ensuring its lubrication effect, and improving the overall reliability of the pump body 3.

[0067] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. An oil suction assembly, characterized by, include: Oil suction pipe and floating components; One end of the oil suction pipe is used to connect to the oil suction chamber of the horizontal compressor, and the other end extends towards the oil sump; the oil suction pipe is provided with a first pipe section, a second pipe section and a third pipe section connected sequentially from the oil suction chamber to the oil sump, the second pipe section is made of flexible material; the floating member is connected to the end of the third pipe section away from the second pipe section, and the end of the third pipe section away from the second pipe section is provided with an oil suction hole.

2. The oil absorption assembly of claim 1, wherein, The density of the floating component is less than that of the refrigeration oil.

3. The oil absorption assembly of claim 1, wherein, The buoyancy of the floating component is greater than the sum of the weights of the second pipe section, the third pipe section, and the floating component.

4. The oil absorption assembly of claim 1, wherein, The floating component is hinged to the third pipe section.

5. The oil absorption assembly of claim 1, wherein, The second pipe section is a corrugated pipe, which is sealed to the opening of the first pipe section and the opening of the third pipe section.

6. The oil absorption assembly of claim 1, wherein, Also includes: A limiting ring; the limiting ring is wrapped around the first pipe segment and the second pipe segment; the length of the limiting ring surrounding the second pipe segment is 1 / 2 to 2 / 3 of the length of the second pipe segment.

7. The oil absorption assembly of claim 1, wherein, The number of oil suction holes is several, and the several oil suction holes are distributed in a circle on the third pipe section with the axis of the third pipe section as the center.

8. The oil absorption assembly of claim 1, wherein, The oil suction hole is inclinedly disposed in the third pipe section, and the oil suction hole is inclined from the end of the third pipe section away from the second pipe section towards the second pipe section.

9. The oil absorption assembly of claim 8, wherein, The angle between the axis of the oil suction hole and the axis of the third pipe section is 0° to 90°.

10. A horizontal compressor characterized by Includes the oil-absorbing component as described in any one of claims 1-9.

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