An oil guide structure, a crankshaft assembly, a compressor and an air conditioner

Abstract

The application provides a guide oil structure, a crankshaft assembly, a compressor and an air conditioner. The guide oil structure comprises: an oil pumping part and an oil return part, the oil pumping part and the oil return part are connected as a whole, the oil pumping part is an anti-rotation oil pumping part formed by twisting a plate-shaped guide oil sheet towards a first rotation direction, the oil return part is a positive-rotation oil return part formed by twisting the plate-shaped guide oil sheet towards a second rotation direction, the first rotation direction is opposite to the second rotation direction, the oil pumping part can pump oil towards the direction of the oil return part, and the oil return part can return oil towards the direction of the oil pumping part. According to the application, the lubricating oil can be locked in the pump body, the lubricating oil pressure and the lubricating oil flow of the pump body are increased, and the invalid pumping amount is reduced. The application has self-adaptability to the frequency, does not affect the low-frequency pumping amount, and increases the oil return amount with the increase of the rotating speed. Meanwhile, the problems of high oil discharge rate at high frequency and poor pumping capacity at low frequency are solved.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, specifically to an oil guide structure, a crankshaft assembly, a compressor, and an air conditioner. Background Technology

[0002] The lubrication between the friction pairs of the compressor pump body mainly relies on the oil passage in the pump body to pump lubricating oil to the contact surface of the moving parts, thereby achieving the effects of lubrication, cooling and heat dissipation.

[0003] The conventional oil pump structure of a rotary compressor is as follows: a central through-hole in the crankshaft, an oil pumping device at the bottom, and oil guide vanes. The compressor housing is filled with lubricating oil, and the oil guide vanes, driven by the rotation of the crankshaft, pump the lubricating oil to each friction pair. To prevent air blockage and maintain connectivity, a through-hole at the top of the crankshaft or a blind bore plus a side outlet is required. When the compressor operates at high frequency, the friction of the moving parts generates a large amount of heat. If the oil pumping volume is insufficient, heat dissipation will be inadequate, leading to wear problems.

[0004] Because most of the oil input at the bottom of the crankshaft flows out from the area with lower pressure and larger surface area—that is, most of the pump oil inlet from the oil guide vane is discharged from the crankshaft center through-hole and flows into the upper cavity of the motor—rather than being used for lubrication between the smaller friction pairs, this portion of lubricating oil not only fails to participate in the lubrication and sealing of the pump body, but also exits the compressor, resulting in a high compressor oil discharge rate.

[0005] The traditional solution involves adding an oil plug to the crankshaft through-hole to block it or leaving a small orifice for throttling. This leads to several problems: at low frequencies, the high pumping resistance causes a significant drop in oil volume, resulting in insufficient lubrication for sealing and reduced pump capacity. At high frequencies, it also fails to effectively suppress oil leakage at this point. Based on these design flaws, this invention designs and develops a novel compressor oil pumping mechanism.

[0006] Because existing compressors suffer from problems such as high-frequency oil pumping leading to oil leakage from the crankshaft top through-hole, resulting in increased compressor oil discharge rate, poor low-frequency oil pumping capacity, and poor cooling capacity due to incomplete sealing of the pump body, this invention researches and designs an oil guiding structure, crankshaft assembly, compressor, and air conditioner. Summary of the Invention

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the defects of existing compressors, which have a high oil discharge rate at high frequencies and poor oil pumping capacity at low frequencies, thereby providing an oil guiding structure, crankshaft assembly, compressor and air conditioner.

[0008] To address the above problems, the present invention provides an oil guiding structure, comprising:

[0009] The system includes an oil pumping section and an oil return section, which are integrated into one unit. The oil pumping section is a counter-rotating oil pumping section formed by twisting a plate-shaped oil guide in the direction of a first rotation. The oil return section is a forward-rotating oil return section formed by twisting a plate-shaped oil guide in the direction of a second rotation. The first rotation is opposite to the second rotation. The oil pumping section can pump oil towards the oil return section, and the oil return section can return oil towards the oil pumping section.

[0010] In some implementations...

[0011] The oil guiding structure has a central axis. The oil pumping part and the oil return part are connected at a connection position. The end of the oil pumping part away from the oil return part is the first end, and the end of the oil return part away from the oil pumping part is the second end. The oil pumping part forms a first flow channel, and the oil return part forms a second flow channel. In a cross section perpendicular to the central axis, the extension direction of the first flow channel from the first end to the connection position is along the first rotation direction, and the extension direction of the second flow channel from the connection position to the second end is the second rotation direction.

[0012] In some implementations...

[0013] The first flow channel is a first spiral flow channel, and the second flow channel is a second spiral flow channel.

[0014] In some implementations...

[0015] The oil pump section is positioned close to the oil sump relative to the oil return section, and the oil pump section can draw oil from the oil sump;

[0016] It also includes a mounting part, which is connected to the end of the oil pump part away from the oil return part, through which the oil guide structure can be installed into the center oil hole of the crankshaft.

[0017] In some implementations...

[0018] The oil pump section is formed by twisting a flat oil guide plate by a first rotation angle, and the oil return section is formed by twisting a flat oil guide plate by a second rotation angle, wherein the second rotation angle is greater than the first rotation angle.

[0019] In some implementations...

[0020] The oil guiding structure has a central axis, the length of the oil pumping part along the central axis is D1, the length of the oil return part along the central axis is D2, and D1 > D2.

[0021] In some implementations...

[0022] The oil guiding structure is arranged vertically, the oil return section is located at the upper end of the oil pump section, and the upper end of the oil pump section is higher than the position of the lubricating oil hole of the upper flange.

[0023] In some implementations...

[0024] By fixing the middle section of the plate-shaped oil guide plate along its length, one end and the other end of the oil guide plate along its length are twisted in the same direction in the vertical observation plane to form the oil pumping section and the oil return section. The middle section is located between the one end and the other end along its length.

[0025] The present invention also provides a crankshaft assembly, which includes the aforementioned oil guiding structure and a crankshaft having a central oil hole, wherein the oil guiding structure is disposed in the central oil hole.

[0026] The present invention also provides a compressor comprising the aforementioned crankshaft assembly.

[0027] The present invention also provides an air conditioner that includes the aforementioned compressor.

[0028] The oil guiding structure, crankshaft assembly, compressor, and air conditioner provided by this invention have the following beneficial effects:

[0029] This invention configures the oil guiding structure as a counter-rotating pumping section formed by twisting in a first direction of rotation, and a forward-rotating return section formed by twisting in a second direction of rotation. The first and second directions of rotation are opposite, allowing the oil guiding structure to pump oil to the return section as it rotates integrally with the crankshaft. Conversely, the return section can pump oil in the opposite direction to the pumping section as the oil guiding structure rotates. Specifically, the lower counter-rotating section forms the oil guiding plate pumping section, enabling pumping by the pump body, while the upper forward-rotating section forms the return section. This prevents lubricating oil from flowing directly out of the crankshaft through-hole, thus... By locking the lubricating oil within the pump body, the pump body's lubricating oil pressure and flow rate are increased, while the amount of ineffective pumped oil is reduced. Furthermore, it is frequency-adaptive, ensuring no impact on low-frequency pumping volume (due to the elimination of the oil plug and side outlet, resistance is reduced, increasing low-frequency pumping volume). Simultaneously, the return oil volume increases with higher speeds. This design also solves the problems of high oil discharge rate at high frequencies and poor pumping capacity at low frequencies. It features a simple structure, one-piece molding, and ease of mass production, while eliminating the need for an oil plug, thus reducing the number of parts. Attached Figure Description

[0030] Figure 1 This is a front sectional view of the compressor of the present invention;

[0031] Figure 2 This is a front sectional view of the pump body portion of the compressor of the present invention;

[0032] Figure 3 This is a schematic diagram of the oil guiding structure of the present invention;

[0033] Figure 4 This is a schematic diagram of the oil flow direction inside the crankshaft of the present invention;

[0034] Figure 5 This is a schematic diagram of the processing of the oil guiding structure of the present invention.

[0035] The reference numerals in the attached figures are as follows:

[0036] 1. Pump oil section; 2. Return oil section; 3. Connection position; 4. First end; 5. Second end; 6. First flow channel; 7. Second flow channel; 8. Mounting section; 9. Oil guide structure; 10. Crankshaft; 11. Center oil hole; 12. Upper flange; 13. Lower flange; 14. Upper flange lubrication hole; 15. Lower flange lubrication hole. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, 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 invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0039] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0040] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention 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 invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0041] 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.

[0042] 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 should not be construed as limiting the scope of protection of this invention.

[0043] like Figures 1 to 5As shown, the present invention provides an oil guiding structure, which includes:

[0044] The system comprises an oil pumping section 1 and an oil return section 2, which are integrated into one unit. The oil pumping section 1 is a counter-rotating oil pumping section formed by twisting a plate-shaped oil guide in the direction of a first rotation. The oil return section 2 is a forward-rotating oil return section formed by twisting a plate-shaped oil guide in the direction of a second rotation. The first rotation is opposite to the second rotation. The oil pumping section 1 can pump oil towards the oil return section 2, and the oil return section 2 can return oil towards the oil pumping section 1.

[0045] This invention configures the oil guiding structure as a counter-rotating pumping section formed by twisting in a first direction of rotation, and a forward-rotating return section formed by twisting in a second direction of rotation. The first and second directions of rotation are opposite, allowing the oil guiding structure to pump oil to the return section as it rotates integrally with the crankshaft. Conversely, the return section can pump oil in the opposite direction to the pumping section as the oil guiding structure rotates. Specifically, the lower counter-rotating section forms the oil guiding plate pumping section, enabling pumping by the pump body, while the upper forward-rotating section forms the return section. This prevents lubricating oil from flowing directly out of the crankshaft through-hole, thus... By locking the lubricating oil within the pump body, the pump body's lubricating oil pressure and flow rate are increased, while the amount of ineffective pumped oil is reduced. Furthermore, it is frequency-adaptive, ensuring no impact on low-frequency pumping volume (due to the elimination of the oil plug and side outlet, resistance is reduced, increasing low-frequency pumping volume). Simultaneously, the return oil volume increases with higher speeds. This design also solves the problems of high oil discharge rate at high frequencies and poor pumping capacity at low frequencies. It features a simple structure, one-piece molding, and ease of mass production, while eliminating the need for an oil plug, thus reducing the number of parts.

[0046] This invention provides a compressor oil pumping mechanism that, through forward oil pumping and reverse oil return, completely controls the lubricating oil within the pump body, increasing the pump body lubricating oil pressure, increasing the effective pumping volume, significantly increasing the amount of lubricating oil on the crankshaft long shaft, and preventing crankshaft wear. It also prevents oil from leaking out of the crankshaft's central oil hole, reducing the risk of pumped oil being carried out of the compressor by the compressor's airflow, and lowering the compressor's oil discharge rate. Furthermore, it solves problems related to pump body wear and sealing, reduces compressor pump body leakage, thereby improving compressor performance and overall compressor reliability.

[0047] Compared to the traditional crankshaft through-hole + oil plug solution, this invention solves the following problems: 1. Oil leakage from the crankshaft top through-hole caused by high-frequency compressor oil pumping, leading to an increased compressor oil discharge rate. 2. Reduced oil output from the spiral grooves due to oil leakage from the crankshaft top at high frequencies, resulting in wear of the crankshaft's long and short shafts. 3. Poor low-frequency compressor oil pumping capacity and incomplete pump body sealing leading to poor cooling capacity. 4. Eliminating the need for an oil plug reduces the number of parts.

[0048] Compared with the traditional crankshaft blind hole + crankshaft side hole oil outlet scheme, this invention solves the problem that although the crankshaft inlet pump has a large oil volume, it is all discharged from the crankshaft blind hole side hole, which is an ineffective pump volume. The proportion of lubricating pump body is small, and it cannot lubricate the oil passages of the long and short shafts.

[0049] In some implementations...

[0050] The oil guiding structure has a central axis. The oil pumping part 1 and the oil return part 2 are connected at the connection position 3. The end of the oil pumping part 1 away from the oil return part 2 is the first end 4, and the end of the oil return part 2 away from the oil pumping part 1 is the second end 5. The oil pumping part 1 forms a first flow channel 6, and the oil return part 2 forms a second flow channel 7. In a cross section perpendicular to the central axis, the first flow channel 6 extends from the first end 4 to the connection position 3 along the first rotation direction, and the second flow channel 7 extends from the connection position 3 to the second end 5 along the second rotation direction.

[0051] This is how the first and second rotation directions of the present invention are formed. Specifically, the oil pumping section extends from the first end (preferably the lower end) to the connecting position, and this extension direction is the first rotation direction in a section perpendicular to the central axis. The oil return section extends from the second end (preferably the connecting position) to the upper end, and this extension direction is the second rotation direction in a section perpendicular to the central axis. Figure 3 As shown in the top view, the first rotation direction is preferably counterclockwise, and the second rotation direction is preferably clockwise. This prevents lubricating oil from flowing directly out of the crankshaft through-hole, locks the lubricating oil in the pump body, increases the lubricating oil pressure and flow rate in the pump body, and reduces the amount of ineffective pumped oil. It is also adaptive to frequency and will not affect the amount of oil pumped at low frequency. At the same time, the amount of oil returned increases with the speed. It also solves the problems of high oil discharge rate at high frequency and poor oil pumping capacity at low frequency.

[0052] This invention provides an oil pumping mechanism for a compressor, which differs from traditional oil guide plates in that it features a two-section design with the two sections connected and rotating in opposite directions. The lower, counter-rotating section is the oil pumping section, enabling oil pumping from the pump body, while the upper, clockwise rotating section is the oil return section. This design prevents lubricating oil from flowing directly out of the crankshaft through-hole, locking the lubricating oil within the pump body, increasing the lubricating oil pressure and flow rate, and reducing ineffective oil pumping. Furthermore, it is frequency-adaptive, not affecting low-frequency oil pumping volume, and the oil return volume increases with higher rotational speeds. It also features a simple structure, one-piece molding, and ease of mass production, while eliminating the need for oil plugs, thus reducing the number of parts.

[0053] In some implementations...

[0054] The first flow channel 6 is a first spiral flow channel, and the second flow channel 7 is a second spiral flow channel. This is the preferred structural form of the two flow channels of the present invention, that is, both are preferably spiral flow channels. The oil pumping part can pump oil upward along the spiral upward flow path, and the oil return part can return oil along the spiral downward flow path, locking the lubricating oil in the pump body, increasing the lubricating oil pressure and lubricating oil flow rate in the pump body, and at the same time solving the problems of high oil discharge rate at high frequency and poor oil pumping capacity at low frequency.

[0055] In some implementations...

[0056] The oil pumping section 1 is positioned close to the oil sump relative to the oil return section 2, and the oil pumping section 1 can draw oil from the oil sump;

[0057] It also includes a mounting part 8, which is connected to the end of the oil pumping part 1 away from the oil return part 2. The oil guiding structure can be installed into the center oil hole of the crankshaft through the mounting part 8.

[0058] This is a preferred structural form of the oil pumping part of the present invention, that is, it is arranged close to the oil sump to draw oil from the oil sump, and the mounting part is used to install the oil guide structure into the central oil hole of the crankshaft, so that the oil guide structure rotates with the crankshaft as a whole, thereby drawing oil upward through the spiral structure of the oil pumping part to lubricate the friction pairs such as the crankshaft and flange.

[0059] In some implementations...

[0060] The oil pumping section 1 is formed by twisting a flat oil guide plate by a first rotation angle, and the oil return section 2 is formed by twisting a flat oil guide plate by a second rotation angle, wherein the second rotation angle is greater than the first rotation angle.

[0061] By setting the first rotation angle of the oil pump section to be smaller than the second rotation angle of the oil return section, the present invention enables the oil return volume to be greater than the oil pump volume, thereby better controlling the lubricating oil within the crankshaft and compressing it to each lubricating oil hole, preventing it from being discharged outside the pump body along the 15 crankshaft through hole, and further improving the overall reliability of the compressor.

[0062] In some implementations...

[0063] The oil guiding structure has a central axis, the length of the oil pumping part 1 along the central axis is D1, the length of the oil return part 2 along the central axis is D2, and D1 > D2.

[0064] In this invention, the axial length D2 of the forward-rotating oil section is set to be less than the axial length D1 of the reverse-rotating oil pump section. Due to the length limitation of the guide plate, the oil pump section needs to pump to each oil hole, which requires a long distance, while the oil return section does not. Under the same rotation, the shorter the length, the stronger the oil return capacity. Therefore, the oil pump section should be designed to be smaller than the oil return section.

[0065] In some implementations...

[0066] The oil guiding structure is arranged vertically, and the oil return section 2 is located above the oil pumping section 1, with the upper end of the oil pumping section 1 being higher than the position of the lubricating oil hole of the upper flange. This is a further preferred structural form of the oil guiding structure of the present invention, namely, an oil guiding structure in a vertical direction, with the oil return section located above the oil pumping section, so that oil is pumped upwards and returned downwards. The upper end of the oil pumping section is higher than the position of the lubricating oil hole of the upper flange, which can effectively ensure effective lubrication of the lower flange, rollers, and upper flange, improving lubrication performance. The oil return section is located above the lubricating oil hole of the upper flange, further enhancing the return oil lubrication effect on the upper flange, rollers, and lower flange.

[0067] The present invention specifies that the height of the reverse-rotation oil section should be higher than the position of the lubricating oil hole 14 of the upper flange so that the lubricating oil can be pumped to the friction pairs of the upper flange for lubrication, and the height of the reverse-rotation oil section should be lower than the chamfer of the crankshaft through hole for assembly.

[0068] In some implementations...

[0069] By fixing the middle section of the plate-shaped oil guide plate along its length, one end and the other end of the oil guide plate along its length are twisted in the same direction in the vertical observation plane to form the oil pumping part 1 and the oil return part 2. The middle section is located between one end and the other end along its length.

[0070] This is a preferred molding method for the oil guiding structure of the present invention, that is, fixing the position of the middle section (e.g.) Figure 5 At the triangular position, the two ends are twisted in the same direction towards the frontal view to form the oil pumping section and the oil return section, respectively. This forms an oil pumping section that rotates upward to pump oil and an oil return section that rotates downward to return oil. The lower part rotates in the opposite direction to form the oil guide plate pumping section, realizing oil pumping by the pump body. The upper part rotates in the forward direction to form the oil return section. This prevents the lubricating oil from flowing directly out of the crankshaft through hole, locks the lubricating oil in the pump body, increases the lubricating oil pressure and lubricating oil flow rate in the pump body, and solves the problems of high oil discharge rate at high frequency and poor oil pumping capacity at low frequency.

[0071] The present invention also provides a crankshaft assembly, which includes the aforementioned oil guiding structure 9 and a crankshaft 10, the crankshaft having a central oil hole 11, the oil guiding structure being disposed in the central oil hole 11, and the central oil hole 11 extending from one axial end of the crankshaft 10 to the other axial end.

[0072] The present invention also provides a compressor comprising the aforementioned crankshaft assembly.

[0073] Figure 1This is a cross-sectional view of the compressor of the present invention, including a compressor housing; a stator; a rotor; a compressor muffler; a crankshaft 10; a cylinder; an exhaust pipe; rollers; an oil guide structure 9; a distributor; and an upper flange 12. The cylinder and rollers together form a crescent-shaped compression chamber. The rotational motion of the crankshaft 10 drives the rollers to rotate along the cylinder wall, performing work and causing the sliding vanes to reciprocate, thus causing a change in volume. Ultimately, the exhaust valve opens, and the exhaust port of the upper flange 12 discharges into the pump body. The oil guide structure 9 is inserted into and fixed at the central oil hole 11 of the crankshaft 10, and under the rotation of the motor, it pumps lubricating oil.

[0074] Figure 2 This is a cross-sectional view of the compressor pump body of the present invention. To accelerate oil circulation and avoid the inability to pump oil due to air blockage, a vent hole needs to be opened in the crankshaft. Currently, there are two main structures for the lubrication oil circuit of the mainstream pump body: one discharges oil through the blind hole side hole of the crankshaft, and the other discharges oil through the crankshaft through hole. The motor drives the crankshaft to rotate, and the lubricating oil is pumped along the oil guide plate to various oil holes, such as the lubricating oil holes of the lower flange and the upper flange, and finally discharged from the blind hole side hole or the crankshaft through hole. The utilization rate of lubricating oil in the pump body is relatively low under both structures. In the case of the blind hole and through hole, most of the lubricating oil pumped along the bottom end of the crankshaft will be directly discharged through the blind hole side hole of the crankshaft, and cannot lubricate the friction pairs. That is, it cannot all flow into the oil holes of the lower flange and the upper flange. The crankshaft through hole scheme has a relatively higher utilization rate of pumped lubricating oil, but a large part of the lubricating oil flows out of the crankshaft through hole and enters the upper cavity of the motor, and is discharged from the compressor along with the refrigerant gas, resulting in a high oil discharge rate of the compressor and causing compressor reliability problems.

[0075] Figure 3 The oil guiding structure 9 of the oil pumping mechanism of the present invention solves the above-mentioned problems. Its structure includes a counter-rotating oil pumping section 1 and a forward-rotating oil return section 2, wherein the two rotate in opposite directions, and their height and rotation are not specifically required, depending on the height of the crankshaft oil hole. The lubricating oil pumped by the counter-rotating oil pumping section 1 flows into the lower flange lubricating oil hole 15 and the upper flange lubricating oil hole 14. Under the action of the forward-rotating oil return section 2, the lubricating oil does not flow out of the crankshaft blind hole side hole and the crankshaft through hole (center oil hole 11), but continues to flow back into the crankshaft, increasing the oil volume and oil pressure in lubricating the upper flange lubricating oil hole 14 and the lower flange lubricating oil hole 15, which is more conducive to removing heat from the friction pair and reducing wear. The oil flow diagram is shown below. Figure 4 As shown.

[0076] Its processing method is as follows Figure 5As shown, its central part is fixed by a clamp, and the two ends rotate in the same direction to complete different rotation methods. (If the middle is fixed and the two ends rotate in the same direction, the rotation directions are opposite.) It has the structural characteristics of simple structure and one-piece molding for easy processing. This invention improves the utilization rate of pumped lubricating oil by at least 100%, and also has the characteristic of adaptive variation with frequency, with less oil return at low frequency and more oil return at high frequency. Compared with the through hole + oil plug solution, it does not affect the performance at low frequency, while increasing the return oil pressure and flow rate at high frequency.

[0077] The present invention also provides an air conditioner that includes the aforementioned compressor.

[0078] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. 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 the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. An oil-guiding structure, characterized in that: include: The oil pumping section (1) and the oil return section (2) are connected as one unit. The oil pumping section (1) is a counter-rotating oil pumping section formed by twisting the plate-shaped oil guide in the direction of the first rotation. The oil return section (2) is a forward-rotating oil return section formed by twisting the plate-shaped oil guide in the direction of the second rotation. The first rotation is opposite to the second rotation. The oil pumping section (1) can pump oil towards the direction of the oil return section (2), and the oil return section (2) can return oil towards the direction of the oil pumping section (1). The oil pumping section (1) is formed by twisting a flat oil guide plate by a first rotation angle, and the oil return section (2) is formed by twisting a flat oil guide plate by a second rotation angle, wherein the second rotation angle is greater than the first rotation angle; the oil guide structure has a central axis, the length of the oil pumping section (1) along the central axis is D1, the length of the oil return section (2) along the central axis is D2, and D1 > D2.

2. The oil guiding structure according to claim 1, characterized in that: The oil guiding structure has a central axis. The oil pumping part (1) and the oil return part (2) are connected at the connection position (3). The end of the oil pumping part (1) away from the oil return part (2) is the first end (4), and the end of the oil return part (2) away from the oil pumping part (1) is the second end (5). The oil pumping part (1) forms a first flow channel (6), and the oil return part (2) forms a second flow channel (7). In a cross section perpendicular to the central axis, the extension direction of the first flow channel (6) from the first end (4) to the connection position (3) is along the first rotation direction, and the extension direction of the second flow channel (7) from the connection position (3) to the second end (5) is the second rotation direction.

3. The oil guiding structure according to claim 2, characterized in that: The first flow channel (6) is a first spiral flow channel, and the second flow channel (7) is a second spiral flow channel.

4. The oil guiding structure according to claim 1, characterized in that: The oil pumping section (1) is located close to the oil tank relative to the oil return section (2), and the oil pumping section (1) can draw oil from the oil tank; It also includes an installation part (8), which is connected to the end of the oil pump part (1) away from the oil return part (2). The oil guide structure can be installed into the center oil hole of the crankshaft through the installation part (8).

5. The oil guiding structure according to any one of claims 1-4, characterized in that: The oil guiding structure is arranged vertically, the oil return section (2) is located at the upper end of the oil pump section (1), and the upper end of the oil pump section (1) is higher than the position of the lubricating oil hole of the upper flange.

6. The oil guiding structure according to any one of claims 1-4, characterized in that: By fixing the middle section of the plate-shaped oil guide plate along its length, one end of the oil guide plate along its length and the other end along its length are twisted in the same direction in the vertical plane observation plane to form the oil pumping part (1) and the oil return part (2). The middle section is located between one end and the other end along its length.

7. A crankshaft assembly, characterized in that: The oil guiding structure (9) included in any one of claims 1-6 further includes a crankshaft (10) having a central oil hole (11), the oil guiding structure being disposed in the central oil hole (11), and the central oil hole (11) extending from one axial end of the crankshaft (10) to the other axial end.

8. A compressor, characterized in that: Includes the crankshaft assembly as described in claim 7.

9. An air conditioner, characterized in that: Includes the compressor as described in claim 8.

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