A oil blocking assembly for a horizontal compressor and a horizontal compressor

Abstract

This invention discloses an oil baffle assembly for a horizontal compressor and the horizontal compressor itself. The oil baffle assembly includes an oil baffle plate and an oil baffle cap. The oil baffle plate is fixed to the motor rotor at the end corresponding to the oil outlet of the crankshaft. An oil baffle cap mounting opening is provided on the oil baffle plate at the position corresponding to the oil outlet of the crankshaft. The oil baffle cap snaps into the mounting opening and is sealed to the oil baffle plate. The oil baffle plate and the oil baffle cap cooperate to isolate the oil outlet of the crankshaft oil passage from the motor cavity. The oil outlet of the crankshaft extends to a certain depth into the inner cavity of the oil baffle cap, and the clearance between the oil baffle cap and the crankshaft forms an oil outlet channel. This invention, through the cooperation of the oil baffle plate and the oil baffle cap, can isolate the oil outlet of the crankshaft oil passage from the motor cavity, thereby reducing the oil outlet pressure of the crankshaft oil passage and facilitating effective oil pumping.

Description

Technical Field

[0001] This invention belongs to the field of horizontal compressor technology, specifically relating to an oil baffle assembly for a horizontal compressor and a horizontal compressor. Background Technology

[0002] Horizontal compressors, with their advantages of horizontal placement, compact structure, and small height footprint, can be used in cold storage, container refrigeration units, and automotive refrigeration units. Unlike vertical compressors, which utilize the centrifugal force of crankshaft rotation to pump oil, the oil pumping method of horizontal compressors is limited by their horizontal layout and typically relies on the principle of pressure differential to achieve the circulation and supply of lubricating oil.

[0003] Therefore, how to achieve effective oil pumping by reasonably controlling the pressure difference has become a core technical challenge affecting the long-term reliable operation of horizontal compressors. Summary of the Invention

[0004] In view of the above-mentioned deficiencies of the prior art, the present invention provides an oil baffle assembly for a horizontal compressor and a horizontal compressor. By cooperating with the oil baffle plate and the oil baffle cap, the oil outlet of the crankshaft oil passage can be isolated from the motor cavity, thereby reducing the oil outlet pressure of the crankshaft oil passage and facilitating effective oil pumping.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] An oil baffle assembly for a horizontal compressor, the horizontal compressor including a housing, a motor and a pump body housed inside the housing, the inner cavity of the housing being divided into a motor cavity and a pump body cavity by an upper cylinder head of the pump body, the motor including a motor stator and a motor rotor, a crankshaft being inserted and fixed in the shaft hole of the motor rotor, the crankshaft having a crankshaft oil passage penetrating both ends of the crankshaft, one end of the crankshaft corresponding to the oil outlet of the crankshaft oil passage being the crankshaft oil outlet end, the crankshaft oil outlet end extending out of the shaft hole of the motor rotor;

[0007] The oil baffle assembly includes an oil baffle plate and an oil baffle cap. The oil baffle plate is fixed to the motor rotor at the end corresponding to the oil outlet of the crankshaft. The oil baffle plate has an oil baffle cap mounting opening at the position corresponding to the oil outlet of the crankshaft. The oil baffle cap is snapped into the oil baffle cap mounting opening and is sealed to the oil baffle plate. The oil baffle plate and the oil baffle cap cooperate to isolate the oil outlet of the crankshaft oil channel from the motor cavity. The oil outlet of the crankshaft extends into the inner cavity of the oil baffle cap to a certain depth. The fit gap between the oil baffle cap and the crankshaft forms an oil outlet channel.

[0008] Furthermore, there is an axial gap between the oil baffle and the corresponding end face of the motor rotor.

[0009] Furthermore, the axial spacing is achieved by a counterweight block disposed between the oil baffle and the motor rotor, and the oil baffle, the counterweight block and the motor rotor are fixedly connected by fasteners.

[0010] Furthermore, the oil baffle cap is elastic and includes an oil baffle cap cover plate and an oil baffle cap connecting wall. One end of the oil baffle cap connecting wall is integrally connected to the edge of the oil baffle cap cover plate. The oil baffle cap connecting wall is inserted into the oil baffle cap mounting port and is sealed to the oil baffle plate. The side of the oil baffle plate facing the corresponding end of the motor rotor is the inner side of the oil baffle plate, and the side of the oil baffle plate opposite to the inner side of the oil baffle plate is the outer side of the oil baffle plate. The oil baffle cap connecting wall is provided with a snap-fit ​​component. The snap-fit ​​component snaps onto the inner side of the oil baffle plate near the oil baffle cap mounting port, or the snap-fit ​​component snaps onto the oil baffle plate and the crankshaft simultaneously, or the snap-fit ​​component snaps onto the outer circumferential surface of the crankshaft near the oil outlet end of the crankshaft.

[0011] Furthermore, the connecting wall of the oil baffle cap is provided with an outwardly protruding snap-fit ​​boss around its circumference. The snap-fit ​​boss snaps onto the outer side of the oil baffle plate near the oil baffle cap mounting opening. The diameter of the oil baffle cap mounting opening is denoted as Dh, and the outer diameter of the snap-fit ​​boss is greater than or equal to 1.1Dh.

[0012] Furthermore, an annular groove is provided on the outer circumferential surface of the crankshaft near the oil outlet end of the crankshaft, and the snap-fit ​​component snaps into the annular groove.

[0013] Furthermore, the oil baffle is annular, the diameter of the oil baffle cap mounting opening is denoted as Dh, the outer diameter of the crankshaft is denoted as Dz, the oil baffle cap cover plate is circular, the oil baffle cap connecting wall is cylindrical, the outer diameter of the oil baffle cap connecting wall is controlled to be 0.95Dh-1.0Dh, and the inner diameter of the oil baffle cap connecting wall is controlled to be 1.05Dz-1.2Dz.

[0014] Furthermore, the snap-fit ​​component consists of multiple snap-fit ​​blocks integrally disposed around the outer side of the oil baffle cap connecting wall, with each snap-fit ​​block snapping into the inner side of the oil baffle plate near the oil baffle cap mounting opening.

[0015] Furthermore, the inner cavity depth of the oil baffle cap is expressed as Hg, and the depth to which the crankshaft oil outlet extends into the inner cavity of the oil baffle cap is controlled to be 0.1Hg-0.9Hg.

[0016] Furthermore, the snap-fit ​​component consists of multiple snap-fit ​​blocks integrally disposed around the inner side of the oil baffle cap connecting wall, and each snap-fit ​​block snaps into the outer peripheral surface of the crankshaft.

[0017] Furthermore, the snap-fit ​​component comprises a plurality of N-shaped bent pieces disposed around the free end of the oil baffle cap connecting wall; the N-shaped bent pieces include a first connecting piece, a second connecting piece, and a third connecting piece, one end of the first connecting piece being integrally connected to a corresponding position at the free end of the oil baffle cap connecting wall, the first connecting piece being inclined outward from the free end of the oil baffle cap connecting wall, the other end of the first connecting piece being integrally connected to one end of the second connecting piece, the other end of the second connecting piece being integrally connected to one end of the third connecting piece, and the other end of the third connecting piece forming the free end of the N-shaped bent piece; each of the first connecting pieces snaps onto the junction of the inner side of the oil baffle plate and the oil baffle cap mounting opening, and the portion where each of the second connecting pieces intersects with the corresponding third connecting piece snaps onto the outer circumferential surface of the crankshaft near the oil outlet end of the crankshaft.

[0018] Furthermore, the snap-fit ​​component comprises multiple V-shaped bent pieces disposed around the free end of the oil baffle cap connecting wall; the V-shaped bent pieces include a first connecting piece and a second connecting piece, one end of the first connecting piece is integrally connected to a corresponding position at the free end of the oil baffle cap connecting wall, the first connecting piece is inclined towards the inner side of the oil baffle cap connecting wall from the free end, the other end of the first connecting piece is integrally connected to one end of the second connecting piece, the other end of the second connecting piece forms the free end of the V-shaped bent piece; the portion where each first connecting piece intersects with the corresponding second connecting piece snaps onto the outer circumferential surface of the crankshaft near the oil outlet end of the crankshaft.

[0019] A horizontal compressor includes the oil baffle assembly for a horizontal compressor described above.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] The oil baffle assembly for a horizontal compressor in this invention includes an oil baffle plate and an oil baffle cap. The oil baffle plate is fixed to the motor rotor at one end corresponding to the oil outlet of the crankshaft. An oil baffle cap mounting opening is provided on the oil baffle plate at the position corresponding to the oil outlet of the crankshaft. The oil baffle cap is snapped into the oil baffle cap mounting opening and is sealed to the oil baffle plate. The oil baffle plate and the oil baffle cap cooperate to isolate the oil outlet of the crankshaft oil passage from the motor cavity. The oil outlet of the crankshaft extends into the inner cavity of the oil baffle cap to a certain depth. The fit clearance between the oil baffle cap and the crankshaft forms an oil outlet passage. This invention, through the cooperation of an oil baffle plate and an oil baffle cap, can isolate the oil outlet of the crankshaft oil passage from the motor cavity. This prevents the high-pressure refrigerant discharged from the upper muffler into the motor cavity during high-speed rotation of the horizontal compressor's motor rotor from entering the crankshaft oil passage through the oil outlet. This reduces the pressure at the crankshaft oil passage outlet, thus effectively utilizing the differential pressure pumping principle to facilitate efficient oil pumping, resulting in faster oil supply and a larger volume of lubricating oil entering the crankshaft oil passage. This invention comprehensively solves the problem of difficult oil supply in horizontal compressors in the prior art. The lubricating oil discharged from the crankshaft oil passage outlet is indirectly discharged into the motor cavity through the oil outlet channel. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of a horizontal compressor including the oil baffle assembly in Embodiment 1 of the present invention.

[0023] Figure 2 for Figure 1 Enlarged structural diagram of the intermediate oil baffle assembly;

[0024] Figure 3 for Figure 1 A three-dimensional structural diagram of the center oil filler cap;

[0025] Figure 4 for Figure 1 A three-dimensional structural diagram of the rotor, counterweight, oil baffle, oil baffle cap, and crankshaft of the electric motor.

[0026] Figure 5 for Figure 4 A schematic diagram of the three-dimensional structure from another direction;

[0027] Figure 6 for Figure 5 A magnified view of a portion of the image;

[0028] Figure 7 This is a cross-sectional structural schematic diagram of a horizontal compressor including the oil baffle assembly in Embodiment 3 of the present invention;

[0029] Figure 8 for Figure 7 Enlarged structural diagram of the intermediate oil baffle assembly;

[0030] Figure 9 for Figure 7 A three-dimensional structural diagram of the rotor, counterweight, oil baffle, oil baffle cap, and crankshaft of the electric motor.

[0031] Figure 10 for Figure 9 A schematic diagram of the three-dimensional structure from another direction;

[0032] Figure 11 for Figure 10 A magnified view of a portion of the image;

[0033] Figure 12 for Figure 7 A partial three-dimensional structural diagram of the fit between the center oil filler cap and the crankshaft;

[0034] Figure 13 for Figure 7 A three-dimensional structural diagram of the center oil filler cap;

[0035] Figure 14 This is a cross-sectional structural schematic diagram of a horizontal compressor including the oil baffle assembly in Embodiment 4 of the present invention;

[0036] Figure 15 for Figure 14 Enlarged structural diagram of the intermediate oil baffle assembly;

[0037] Figure 16 for Figure 14 A three-dimensional structural diagram of the rotor, counterweight, oil baffle, oil baffle cap, and crankshaft of the electric motor.

[0038] Figure 17 for Figure 14 A partial three-dimensional structural diagram of the fit between the center oil filler cap and the crankshaft;

[0039] Figure 18 for Figure 14 A three-dimensional structural diagram of the center oil filler cap;

[0040] Figure 19 This is an initial oil level and oil-gas distribution cloud map of a horizontal compressor including the oil baffle assembly in Embodiment 1 of the present invention;

[0041] Figure 20 This is an oil and gas distribution cloud map after 90 cycles of operation of a horizontal compressor including the oil baffle assembly in Embodiment 1 of the present invention;

[0042] Figure 21 This is a distribution diagram showing the difference between the average pressure P1 in the motor cavity and the average pressure P2 in the pump cavity of a horizontal compressor including the oil baffle assembly in Embodiment 1 of the present invention, and the difference between the average pressure P3 at the oil outlet of the crankshaft oil passage and the average pressure P2 in the pump cavity during one cycle.

[0043] Figure reference numerals: 1. Housing; 101. Motor cavity; 102. Pump cavity; 2. Motor stator; 3. Motor rotor; 4. Crankshaft; 401. Upper eccentric part; 402. Lower eccentric part; 403. Crankshaft oil passage; 40301. Oil suction port; 40302. Oil outlet port; 404. Vane; 405. Crankshaft oil outlet end; 406. Annular groove; 407. Upper cylinder head crankshaft oil hole; 408. Lower cylinder head crankshaft oil hole; 409. Lower piston crankshaft oil hole; 5. Upper muffler; 6. Upper cylinder head; 601. Upper spiral groove oil drain passage; 7. Upper cylinder; 8. Intermediate plate; 9. Lower cylinder; 10. Lower cylinder head; 1001. Lower spiral groove oil drain passage; 11. Lower muffler 12. Upper piston, 13. Lower piston, 14. Oil suction pipe, 15. Oil baffle, 1501. Oil baffle cap mounting port, 1502. Inner side of oil baffle, 1503. Outer side of oil baffle, 16. Oil baffle cap, 1601. Oil baffle cap cover plate, 1602. Oil baffle cap connecting wall, 1603. Snap-fit ​​boss, 1604. Snap-fit ​​block, 1605. N-shaped bent piece, 160501. First connecting piece, 160502. Second connecting piece, 160503. Third connecting piece, 1606. V-shaped bent piece, 160601. No. 1 connecting piece, 160602. No. 2 connecting piece, 17. Oil outlet channel, 18. Balance weight block, 19. Bolt. Detailed Implementation

[0044] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. These embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0045] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0048] An oil baffle assembly for a horizontal compressor, the horizontal compressor including a housing 1, wherein a motor and a pump body are provided inside the housing 1, the inner cavity of the housing 1 is divided into a motor cavity 101 and a pump body cavity 102 by the upper cylinder head 6 of the pump body, the motor including a motor stator 2 and a motor rotor 3, a crankshaft 4 is inserted and fixed in the shaft hole of the motor rotor 3, the crankshaft 4 is provided with a crankshaft oil passage 403 passing through both ends of the crankshaft 4, one end of the crankshaft 4 corresponding to the oil outlet 40302 of the crankshaft oil passage 403 is the crankshaft oil outlet 405, and the crankshaft oil outlet 405 extends out of the shaft hole of the motor rotor 3;

[0049] like Figures 1-2 , Figures 4-11 and Figures 14-16 As shown, the oil baffle assembly includes an oil baffle plate 15 and an oil baffle cap 16. The oil baffle plate 15 is fixed on the motor rotor 3 at one end corresponding to the crankshaft oil outlet 405. An oil baffle cap mounting port 1501 is provided on the oil baffle plate 15 at the position corresponding to the crankshaft oil outlet 405. The oil baffle cap 16 is snapped into the oil baffle cap mounting port 1501 and sealed to the oil baffle plate 15. The oil baffle plate 15 and the oil baffle cap 16 cooperate to isolate the oil outlet 40302 of the crankshaft oil passage 403 from the motor cavity 101. The crankshaft oil outlet 405 extends into the inner cavity of the oil baffle cap 16 to a certain depth. The fit gap between the oil baffle cap 16 and the crankshaft 4 forms an oil outlet channel 17.

[0050] This invention, through the cooperation of the oil baffle plate 15 and the oil baffle cap 16, can isolate the oil outlet 40302 of the crankshaft oil passage 403 from the motor cavity 101. In this way, during the high-speed rotation of the motor rotor 3 of the horizontal compressor, the high-pressure refrigerant discharged from the upper muffler 5 into the motor cavity 101 cannot enter the crankshaft oil passage 403 through the oil outlet 40302, thereby reducing the pressure at the oil outlet 40302 of the crankshaft oil passage 403. Therefore, by effectively utilizing the differential pressure pumping principle, it is easy to effectively pump oil, making the oil supply speed faster and increasing the amount of lubricating oil entering the crankshaft oil passage 403. This invention can universally solve the problem of difficult oil supply in horizontal compressors in the background art. The lubricating oil discharged from the oil outlet 40302 of the crankshaft oil passage 403 is indirectly discharged into the motor cavity 101 through the oil outlet channel 17.

[0051] During assembly, the oil baffle 15 is first assembled onto the motor rotor 3, then the crankshaft 4 is pressed into the shaft hole of the motor rotor 3, and finally the oil baffle cap 16 is pressed into the oil baffle cap mounting port 1501 of the oil baffle 15.

[0052] After the pump body of the horizontal compressor is assembled, it is necessary to measure the dimensions of the crankshaft 4 pressed into the electronic rotor, i.e., the rotor cold-pressed dimensions. These dimensions can be measured by measuring the axial distance between the crankshaft oil outlet end 405 and the corresponding end of the rotor core of the motor rotor 3, or by measuring the axial distance between the upper cylinder head 6 and the other end of the rotor core. Since the axial distance between the crankshaft oil outlet end 405 and the corresponding end of the rotor core of the motor rotor 3 is relatively small, measuring this distance ensures the accuracy of the measured rotor cold-pressed dimensions. Because the oil baffle cap 16 is snapped into the oil baffle cap mounting port 1501 and sealed to the oil baffle plate 15, the oil baffle cap 16 and the oil baffle plate 15 are detachably connected. This allows for easy measurement using tools such as vernier calipers before assembling the oil baffle cap 16 onto the oil baffle plate 15, through the pre-reserved oil baffle cap mounting port 1501 on the oil baffle plate 15. The axial distance between the crankshaft oil outlet end 405 and the corresponding end of the rotor core of the motor rotor 3 is used to control the rotor cold pressing size. After the crankshaft 4 is fully pressed into the shaft hole of the motor rotor 3, the oil baffle cap 16 is then assembled on the oil baffle plate 15 to seal the oil baffle cap mounting port 1501. Therefore, by setting the oil baffle cap 16 and the oil baffle plate 15 which are detachably connected, it is convenient to measure the rotor cold pressing size and the accuracy of the measured rotor cold pressing size can be guaranteed. However, if the oil baffle cap 16 and the oil baffle plate 15 are integrally formed, the vernier caliper cannot reach the crankshaft oil outlet end 405, and thus it is impossible to measure the rotor cold pressing size by measuring the axial distance between the crankshaft oil outlet end 405 and the corresponding end of the rotor core of the motor rotor 3. If the rotor cold pressing size is measured by measuring the axial distance between the upper cylinder head 6 and the other end of the rotor core, the axial cumulative tolerance is large due to the large axial distance between the upper cylinder head 6 and the other end of the rotor core, resulting in a large measurement error in the rotor cold pressing size.

[0053] The inner cavity depth of the oil baffle cap 16 is expressed as Hg, and the depth to which the crankshaft oil outlet end 405 extends into the inner cavity of the oil baffle cap 16 is controlled to be 0.1Hg-0.9Hg.

[0054] The oil baffle 15 has an axial gap with the corresponding end face of the motor rotor 3. For example... Figures 1-2 , Figures 4-11 and Figures 14-16 As shown, the axial spacing is achieved by a counterweight 18 disposed between the oil baffle 15 and the motor rotor 3. The oil baffle 15, the counterweight 18 and the rotor core of the motor rotor 3 are fixedly connected by fasteners.

[0055] By setting the counterweight 18, the moment of inertia of the crankshaft 4 during its rotation along with the motor rotor 3 can be balanced.

[0056] Preferably, the fastener is a bolt 19.

[0057] Among them, such as Figures 1-18 As shown, the oil baffle cap 16 is elastic and includes an oil baffle cap cover plate 1601 and an oil baffle cap connecting wall 1602. One end of the oil baffle cap connecting wall 1602 is integrally connected to the edge of the oil baffle cap cover plate 1601. The oil baffle cap connecting wall 1602 is inserted into the oil baffle cap mounting port 1501 and is sealed to the oil baffle plate 15. The side of the oil baffle plate 15 facing the corresponding end of the motor rotor 3 is the inner side of the oil baffle plate 1502, and the side of the oil baffle plate 15 opposite to the inner side of the oil baffle plate 1502 is the outer side of the oil baffle plate 1503. The oil baffle cap connecting wall 1602 is provided with a snap-fit ​​component. The snap-fit ​​component snaps onto the inner side of the oil baffle plate 1502 near the oil baffle cap mounting port 1501, or the snap-fit ​​component snaps onto the oil baffle plate 15 and the crankshaft 4 simultaneously, or the snap-fit ​​component snaps onto the outer circumferential surface of the crankshaft 4 near the crankshaft oil outlet end 405.

[0058] The oil baffle cap connecting wall 1602 has an outwardly protruding snap-fit ​​boss 1603 around its circumference. The snap-fit ​​boss 1603 snaps onto the outer side surface 1503 of the oil baffle plate near the oil baffle cap mounting opening 1501. The diameter of the oil baffle cap mounting opening 1501 is denoted as Dh, and the outer diameter of the snap-fit ​​boss 1603 is greater than or equal to 1.1Dh.

[0059] Among them, such as Figure 12 and Figure 17 As shown, an annular groove 406 is provided on the outer circumferential surface of the crankshaft 4 near the crankshaft oil outlet 405, and the snap-fit ​​component is snapped into the annular groove 406.

[0060] Among them, the oil baffle plate 15 is annular, the diameter of the oil baffle cap mounting port 1501 is denoted as Dh, the outer diameter of the crankshaft 4 is denoted as Dz, the oil baffle cap cover plate 1601 is circular, the oil baffle cap connecting wall 1602 is cylindrical, the outer diameter of the oil baffle cap connecting wall 1602 is controlled to be 0.95Dh-1.0Dh, and the inner diameter of the oil baffle cap connecting wall 1602 is controlled to be 1.05Dz-1.2Dz.

[0061] Example 1, as Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the snap-fit ​​component consists of multiple snap-fit ​​blocks 1604 integrally disposed around the outer side of the oil baffle cap connecting wall 1602, and each snap-fit ​​block 1604 snaps onto the inner side of the oil baffle plate 1502 at a position near the oil baffle cap mounting opening 1501.

[0062] By pressing multiple snap-fit ​​blocks 1604 around the outer side of the oil baffle cap connecting wall 1602 into and through the oil baffle cap mounting opening 1501 of the oil baffle plate 15, each snap-fit ​​block 1604 snaps onto the inner side of the oil baffle plate 1502 near the oil baffle cap mounting opening 1501, and the snap-fit ​​boss 1603 snaps onto the outer side of the oil baffle plate 1503 near the oil baffle cap mounting opening 1501. Through the cooperation of the snap-fit ​​boss 1603 and the multiple snap-fit ​​blocks 1604, a snap-fit ​​sealing connection between the oil baffle cap 16 and the oil baffle plate 15 can be achieved.

[0063] This includes the initial oil level of the horizontal compressor in the oil baffle assembly of this embodiment. Figure 19 After 90 cycles of operation, the amount of lubricating oil in crankshaft oil passage 403 is sufficient. Figure 20 This demonstrates that the technical solution adopted in this embodiment facilitates efficient oil pumping.

[0064] For the horizontal compressor including the oil baffle assembly in this embodiment, the average pressure P1 in the motor cavity 101 is greater than the average pressure P2 in the pump body cavity 102 within one cycle, but the average pressure P3 at the oil outlet 40302 of the crankshaft oil passage 403 is less than the average pressure P2 in the pump body cavity 102. (See...) Figure 21 Therefore, it is convenient to pump oil effectively.

[0065] In the second embodiment, the snap-fit ​​component consists of multiple snap-fit ​​blocks 1604 integrally disposed around the inner side of the oil baffle cap connecting wall 1602, and each snap-fit ​​block 1604 snaps into the outer peripheral surface of the crankshaft 4.

[0066] Example 3, as Figures 7-13 As shown, the snap-fit ​​component consists of multiple N-shaped bent pieces 1605 disposed around the free end of the oil baffle cap connecting wall 1602; the N-shaped bent pieces 1605 include a first connecting piece 160501, a second connecting piece 160502, and a third connecting piece 160503. One end of the first connecting piece 160501 is integrally connected to a corresponding position at the free end of the oil baffle cap connecting wall 1602. The first connecting piece 160501 is inclined outward from the free end of the oil baffle cap connecting wall 1602, and the other end of the first connecting piece 160501... One end of the first connecting piece 160501 is integrally connected to one end of the second connecting piece 160502, and the other end of the second connecting piece 160502 is integrally connected to one end of the third connecting piece 160503. The other end of the third connecting piece 160503 forms the free end of the N-shaped bent piece 1605. Each first connecting piece 160501 is snapped into the junction of the inner side surface 1502 of the oil baffle plate and the oil baffle cap mounting port 1501. The part where each second connecting piece 160502 intersects with the corresponding third connecting piece 160503 is snapped into the outer circumferential surface of the crankshaft 4 near the crankshaft oil outlet end 405.

[0067] By pressing multiple N-shaped bent pieces 1605 around the free end of the oil baffle cap connecting wall 1602 into and through the oil baffle cap mounting opening 1501 of the oil baffle plate 15, the first connecting piece 160501 of each N-shaped bent piece 1605 is engaged at the junction of the inner side surface 1502 of the oil baffle plate and the oil baffle cap mounting opening 1501, and the intersection of the second connecting piece 160502 and the third connecting piece 160503 of each N-shaped bent piece 1605 is engaged with the outer surface of the crankshaft 4. The oil baffle 16 is positioned near the crankshaft oil outlet 405 on the circumferential surface, and the snap-fit ​​boss 1603 is snapped onto the outer side 1503 of the oil baffle plate near the oil baffle cap mounting port 1501. Through the cooperation of the snap-fit ​​boss 1603 and multiple N-shaped bent pieces 1605, a snap-fit ​​sealing connection can be achieved between the oil baffle cap 16 and the oil baffle plate 15. Since each N-shaped bent piece 1605 snaps onto the oil baffle plate 15 and the crankshaft 4 simultaneously, it can be ensured that the oil baffle cap 16 will not fall off.

[0068] Example 4, as Figures 14-18 As shown, the snap-fit ​​component consists of multiple V-shaped bent pieces 1606 disposed around the free end of the oil baffle cap connecting wall 1602. The V-shaped bent pieces 1606 include a first connecting piece 160601 and a second connecting piece 160602. One end of the first connecting piece 160601 is integrally connected to the corresponding position of the free end of the oil baffle cap connecting wall 1602. The first connecting piece 160601 is inclined towards the inside of the oil baffle cap connecting wall 1602 from the free end. The other end of the first connecting piece 160601 is integrally connected to one end of the second connecting piece 160602. The other end of the second connecting piece 160602 forms the free end of the V-shaped bent piece 1606. The part where each first connecting piece 160601 intersects with the corresponding second connecting piece 160602 is snapped onto the outer circumferential surface of the crankshaft 4 near the crankshaft oil outlet end 405.

[0069] By pressing multiple V-shaped bent pieces 1606 around the free end of the oil baffle cap connecting wall 1602 into and through the oil baffle cap mounting port 1501 of the oil baffle plate 15, the parts where the first connecting piece 160601 and the second connecting piece 160602 of each V-shaped bent piece 1606 intersect are engaged on the outer circumferential surface of the crankshaft 4 near the oil outlet end 405 of the crankshaft. The engaging boss 1603 is engaged on the outer side surface 1503 of the oil baffle plate near the oil baffle cap mounting port 1501. Through the cooperation of the engaging boss 1603 and the multiple V-shaped bent pieces 1606, a snap-fit ​​sealing connection between the oil baffle cap 16 and the oil baffle plate 15 can be achieved.

[0070] Among them, the oil baffle cap 16 is a sheet metal part.

[0071] A horizontal compressor includes the aforementioned oil baffle assembly for a horizontal compressor.

[0072] The pump body of the horizontal compressor also includes an upper muffler 5, an upper cylinder 7, an intermediate plate 8, a lower cylinder 9, a lower cylinder head 10, and a lower muffler 11; the crankshaft 4 passes sequentially through the shaft hole of the upper cylinder head 6, the cavity of the upper cylinder 7, the shaft hole of the intermediate plate 8, the cavity of the lower cylinder 9, and the shaft hole of the lower cylinder head 10. The part of the crankshaft 4 located in the cavity of the upper cylinder 7 is the upper eccentric part 401, and the part located in the cavity of the lower cylinder 9 is the lower eccentric part 402. An upper piston 12 is sleeved and fixed on the outside of the upper eccentric part 401, and a lower piston 13 is sleeved and fixed on the outside of the lower eccentric part 402; the upper cylinder head 6 of the pump body An upper cylinder head external flow hole is provided at the outer edge, connecting the motor cavity 101 and the pump body cavity 102. The oil suction port 40301 at one end of the crankshaft oil passage 403 is connected to the pump body cavity 102 through the oil suction pipe 14. A vane 404 is provided in the crankshaft oil passage 403 near the oil suction port 40301. An upper cylinder head crankshaft oil hole 407 is provided on the crankshaft 4 at the position corresponding to the upper cylinder head 6, and a lower cylinder head crankshaft oil hole 408 is provided at the position corresponding to the lower cylinder head 10. An upper piston crankshaft oil hole is provided at the upper eccentric part 401, and a lower piston crankshaft oil hole 409 is provided at the lower eccentric part 402.

[0073] In this process, lubricating oil in the pump body cavity 102 is sequentially drawn into the crankshaft oil passage 403 through the oil suction pipe 14 and the oil suction port 40301. Under the action of the rotating vane 404, the lubricating oil is distributed to the gap between the crankshaft 4 and the lower cylinder head 10 through the lower cylinder head crankshaft oil hole 408, to the gap between the lower eccentric part 402 and the lower piston 13 through the lower piston crankshaft oil hole 409, to the gap between the upper eccentric part 401 and the upper piston 12 through the upper piston crankshaft oil hole, and to the gap between the crankshaft 4 and the upper cylinder head 6 through the upper cylinder head crankshaft oil hole 407. The remaining lubricating oil in the crankshaft oil passage 403 exits from the oil outlet 403. 02 is discharged and indirectly discharged into the motor cavity 101 through the oil outlet channel 17; the lubricating oil between the crankshaft 4 and the lower cylinder head 10 and the lubricating oil between the lower eccentric part 402 and the lower piston 13 flows back to the oil suction port 40301 through the lower spiral groove oil discharge channel 1001 on the surface of the shaft hole of the lower cylinder head 10; the lubricating oil between the crankshaft 4 and the upper cylinder head 6 and the lubricating oil between the upper eccentric part 401 and the upper piston 12 is discharged into the motor cavity 101 through the upper spiral groove oil discharge channel 601 on the surface of the shaft hole of the upper cylinder head 6; the lubricating oil in the motor cavity 101 enters the pump body cavity 102 through the upper cylinder head outer flow hole at the lower part of the upper cylinder head 6, and the lubricating oil in the pump body cavity 102 then enters the oil suction pipe 14 to form a circulation.

[0074] 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 substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. An oil baffle assembly for a horizontal compressor, the horizontal compressor comprising a housing (1), wherein a motor and a pump body are disposed within the housing (1), the inner cavity of the housing (1) is divided into a motor cavity (101) and a pump body cavity (102) by an upper cylinder head (6) of the pump body, the motor comprising a motor stator (2) and a motor rotor (3), a crankshaft (4) is fixedly inserted into the shaft hole of the motor rotor (3), the crankshaft (4) is provided with a crankshaft oil passage (403) penetrating both ends of the crankshaft (4), one end of the crankshaft (4) corresponding to the oil outlet (40302) of the crankshaft oil passage (403) is a crankshaft oil outlet end (405), the crankshaft oil outlet end (405) extends out of the shaft hole of the motor rotor (3); characterized in that: The oil baffle assembly includes an oil baffle plate (15) and an oil baffle cap (16). The oil baffle plate (15) is fixed on the motor rotor (3) at one end corresponding to the crankshaft oil outlet (405). An oil baffle cap mounting port (1501) is provided on the oil baffle plate (15) at a position corresponding to the crankshaft oil outlet (405). The oil baffle cap (16) is snapped into the oil baffle cap mounting port (1501) and sealed to the oil baffle plate (15). The oil baffle plate (15) and the oil baffle cap (16) cooperate to achieve the isolation between the oil outlet (40302) of the crankshaft oil channel (403) and the motor cavity (101). The crankshaft oil outlet (405) extends into the inner cavity of the oil baffle cap (16) to a certain depth. The fit gap between the oil baffle cap (16) and the crankshaft (4) forms an oil outlet channel (17).

2. The oil baffle assembly for a horizontal compressor according to claim 1, characterized in that: There is an axial gap between the oil baffle (15) and the corresponding end face of the motor rotor (3).

3. An oil baffle assembly for a horizontal compressor according to claim 2, characterized in that: The axial spacing is achieved by a counterweight (18) set between the oil baffle (15) and the motor rotor (3). The oil baffle (15), the counterweight (18) and the motor rotor (3) are fixedly connected by fasteners.

4. An oil baffle assembly for a horizontal compressor according to claim 2, characterized in that: The oil baffle cap (16) is elastic and includes an oil baffle cap cover plate (1601) and an oil baffle cap connecting wall (1602). One end of the oil baffle cap connecting wall (1602) is integrally connected to the edge of the oil baffle cap cover plate (1601). The oil baffle cap connecting wall (1602) is inserted into the oil baffle cap mounting port (1501) and is sealed to the oil baffle plate (15). The side of the oil baffle plate (15) facing the corresponding end of the motor rotor (3) is the inner side surface (1502) of the oil baffle plate. The side of the oil baffle (15) opposite to the inner side (1502) of the oil baffle is the outer side (1503) of the oil baffle; the connecting wall (1602) of the oil baffle cap is provided with a snap-fit ​​component, which snaps onto the inner side (1502) of the oil baffle near the oil baffle cap mounting port (1501), or the snap-fit ​​component snaps onto the oil baffle (15) and the crankshaft (4) at the same time, or the snap-fit ​​component snaps onto the outer circumferential surface of the crankshaft (4) near the crankshaft oil outlet end (405).

5. An oil baffle assembly for a horizontal compressor according to claim 4, characterized in that: The oil baffle cap connecting wall (1602) is provided with an outwardly protruding snap-fit ​​boss (1603) around its circumference. The snap-fit ​​boss (1603) snaps onto the outer side (1503) of the oil baffle plate near the oil baffle cap mounting port (1501). The diameter of the oil baffle cap mounting port (1501) is denoted as Dh, and the outer diameter of the snap-fit ​​boss (1603) is greater than or equal to 1.1Dh.

6. An oil baffle assembly for a horizontal compressor according to claim 4, characterized in that: An annular groove (406) is provided on the outer circumferential surface of the crankshaft (4) near the oil outlet end (405) of the crankshaft, and the snap-fit ​​component is snapped into the annular groove (406).

7. An oil baffle assembly for a horizontal compressor according to claim 4, characterized in that: The oil baffle (15) is annular, the diameter of the oil baffle cap mounting port (1501) is denoted as Dh, the outer diameter of the crankshaft (4) is denoted as Dz, the oil baffle cap cover plate (1601) is circular, the oil baffle cap connecting wall (1602) is cylindrical, the outer diameter of the oil baffle cap connecting wall (1602) is controlled to be 0.95Dh-1.0Dh, and the inner diameter of the oil baffle cap connecting wall (1602) is controlled to be 1.05Dz-1.2Dz.

8. An oil baffle assembly for a horizontal compressor according to claim 5, characterized in that: The snap-fit ​​component consists of multiple snap-fit ​​blocks (1604) integrally disposed around the outer side of the oil baffle cap connecting wall (1602), and each snap-fit ​​block (1604) snaps onto the inner side of the oil baffle plate (1502) at a position near the oil baffle cap mounting port (1501).

9. An oil baffle assembly for a horizontal compressor according to claim 1, characterized in that: The inner cavity depth of the oil baffle cap (16) is expressed as Hg, and the depth of the crankshaft oil outlet end (405) extending into the inner cavity of the oil baffle cap (16) is controlled to be 0.1Hg-0.9Hg.

10. An oil baffle assembly for a horizontal compressor according to claim 5 or 6, characterized in that: The snap-fit ​​component consists of multiple snap-fit ​​blocks (1604) integrally disposed around the inner side of the oil baffle cap connecting wall (1602), and each snap-fit ​​block (1604) snaps into the outer peripheral surface of the crankshaft (4).

11. An oil baffle assembly for a horizontal compressor according to claim 5 or 6, characterized in that: The snap-fit ​​component consists of a plurality of N-shaped bent pieces (1605) disposed around the free end of the oil baffle cap connecting wall (1602); the N-shaped bent pieces (1605) include a first connecting piece (160501), a second connecting piece (160502), and a third connecting piece (160503). One end of the first connecting piece (160501) is integrally connected to a corresponding position at the free end of the oil baffle cap connecting wall (1602). The first connecting piece (160501) is inclined outward from the free end of the oil baffle cap connecting wall (1602). The other end of the first connecting piece (160501) is... One end of the first connecting piece (160501) is integrally connected to one end of the second connecting piece (160502), and the other end of the second connecting piece (160502) is integrally connected to one end of the third connecting piece (160503). The other end of the third connecting piece (160503) forms the free end of the N-shaped bent piece (1605). Each of the first connecting pieces (160501) is snapped into the junction of the inner side surface (1502) of the oil baffle plate and the oil baffle cap mounting port (1501). The part where each of the second connecting pieces (160502) intersects with the corresponding third connecting piece (160503) is snapped into the outer circumferential surface of the crankshaft (4) near the crankshaft oil outlet end (405).

12. An oil baffle assembly for a horizontal compressor according to claim 5 or 6, characterized in that: The snap-fit ​​component consists of multiple V-shaped bent pieces (1606) disposed around the free end of the oil baffle cap connecting wall (1602); each V-shaped bent piece (1606) includes a first connecting piece (160601) and a second connecting piece (160602), one end of the first connecting piece (160601) being integrally connected to a corresponding position at the free end of the oil baffle cap connecting wall (1602), the first connecting piece (160601) extending from the free end of the oil baffle cap connecting wall (1602). Inclined towards the inner side of the oil baffle cap connecting wall (1602), the other end of the first connecting piece (160601) is integrally connected to one end of the second connecting piece (160602), and the other end of the second connecting piece (160602) forms the free end of the V-shaped bending piece (1606); the part where each first connecting piece (160601) intersects with the corresponding second connecting piece (160602) is engaged on the outer circumferential surface of the crankshaft (4) near the crankshaft oil outlet end (405).

13. A horizontal compressor, characterized in that: Includes the oil baffle assembly for a horizontal compressor as described in any one of claims 1-12.

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