Pump body assembly, scroll compressor and air conditioner

Abstract

The invention provides a pump body assembly, a scroll compressor and an air conditioner, the pump body assembly comprises a crankshaft and an eccentric mass block, the crankshaft comprises a crankshaft main body and a crank, the crank is located at the axial end of the crankshaft main body, a shaft shoulder is formed at the joint of the crank and the crankshaft main body, and the eccentric mass block is arranged in the longitudinal section. The width of the shaft shoulder in the direction perpendicular to the central axis of the crankshaft is larger than that of the crank in the direction, so that a first step surface is formed at the joint of the shaft shoulder and the crank, the eccentric mass block comprises a matching part matched with the first step surface, and the matching part of the eccentric mass block, the first step surface and the crank define at least partial structure of a shaft shoulder oil pool; the shaft shoulder oil pool can store lubricating oil, so that when the compressor is started, the lubricating oil in the shaft shoulder oil pool can be pumped to the pump body to supply oil to the pump body. According to the scroll compressor, oil can be quickly supplied to the pump body backpressure chamber, so that the risk of oil shortage abrasion of the pump body during starting is reduced, and the problem that the scroll compressor breaks down during starting is solved.

Description

Technical Field

[0001] The invention relates to the technical field of compressors, and in particular to a pump body assembly, a scroll compressor and an air conditioner. Background Art

[0002] Scroll compressors have the advantages of simple structure, small size, light weight, low noise, high mechanical efficiency and smooth operation. Among them, the dynamic and static scroll plates are the core components of the scroll compressor, and the lubrication of the dynamic and static disk pump body is a key factor affecting the reliability of the compressor. Especially during the initial startup of the compressor, the compressor pump body oil supply system is not balanced, which can easily lead to lack of oil and wear of the dynamic and static disks, thereby causing the compressor to fail during startup.

[0003] Since the scroll compressor in the prior art has technical problems such as the compressor pump body oil supply system not reaching balance during the initial startup, resulting in lack of oil and wear of the dynamic and static disks, thereby causing the compressor to malfunction during startup, the present invention studies and designs a pump body assembly, a scroll compressor and an air conditioner. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that during the initial startup of the scroll compressor, the compressor pump body oil supply system fails to reach balance, resulting in lack of oil and wear of the movable and static disks, thereby causing the compressor to malfunction during startup, thereby providing a pump body assembly, a scroll compressor and an air conditioner.

[0005] In order to solve the above problems, the present invention provides a pump body assembly, which includes:

[0006] A crankshaft and an eccentric mass block, wherein the crankshaft includes a crankshaft body and a crank, wherein the crank is located at the axial end of the crankshaft body, and a shoulder is formed at the junction of the crank and the crankshaft body. In a longitudinal cross section, the width of the shoulder in a direction perpendicular to the central axis of the crankshaft is larger than the width of the crank in this direction, so as to form a first step surface at the junction of the shoulder and the crank, and the eccentric mass block includes a mating portion mating with the first step surface, so that the mating portion of the eccentric mass block, the first step surface and the crank form at least a partial structure of a shoulder oil pool, and the shoulder oil pool can store lubricating oil, so that when the compressor is started, the lubricating oil in the shoulder oil pool can be pumped to the pump body to supply oil to it.

[0007] In some embodiments,

[0008] The eccentric mass block also includes a connecting portion located on the outer periphery of the shoulder, and the connecting portion is fastened to the shoulder as a whole through a fastener; the mating portion is connected to the connecting portion and a second step surface is formed between the two, and the second step surface is arranged in a close fit with the first step surface. In the longitudinal cross-section and in a direction perpendicular to the crankshaft axis, the inner circumference size of the mating portion is smaller than the inner circumference size of the connecting portion.

[0009] In some embodiments,

[0010] It also includes a moving plate, which includes a moving plate bearing seat, at least a portion of the shaft section of the moving plate bearing seat is sleeved on the outer periphery of the crank, so that the crank drives the moving plate bearing seat to drive the moving plate to move, and the shaft end of the moving plate bearing seat is spaced from the first step surface by a first preset distance, so that at least a portion of the structure of the shoulder oil pool is located between the shaft end of the moving plate bearing seat and the first step surface.

[0011] In some embodiments,

[0012] It also includes a bearing, which is sleeved on the outer periphery of the crank and located on the inner periphery of the movable plate bearing seat. The lower end of the bearing is also spaced a second preset distance from the first step surface, and at least part of the structure of the shoulder oil pool is located between the axial end of the movable plate bearing seat and the first step surface.

[0013] In some embodiments,

[0014] The moving plate includes a moving plate base plate, the moving plate bearing seat is located at one axial end of the center of the moving plate base plate and extends in a direction away from the moving plate base plate, one axial end of the crank is opposite to the moving plate base plate and is spaced a third preset distance from the moving plate base plate to form an oil supply channel 1, an oil supply channel 2 is spaced between the outer periphery of the crank and the inner periphery of the bearing, and a center oil hole is provided inside the crankshaft, and the center oil hole is connected to the shoulder oil pool through the oil supply channel 1 and the oil supply channel 2 in sequence to provide lubricating oil to the shoulder oil pool.

[0015] In some embodiments,

[0016] A moving plate oil hole is also provided inside the moving plate bearing seat, and the moving plate includes a moving plate base plate. The moving plate bearing seat is connected to one axial end of the moving plate base plate and extends axially in a direction away from the moving plate bearing seat. There is a gap between the axial end of the eccentric mass block facing the moving plate base plate and the moving plate base plate. One end of the moving plate oil hole is connected to the shoulder oil pool, and the other end is connected to the gap between the eccentric mass block and the moving plate base plate, thereby supplying oil to the pump body.

[0017] In some embodiments,

[0018] The movable plate oil hole includes movable plate oil hole 1 and movable plate oil hole 2. The lower end of movable plate oil hole 1 is located at the bottom end of the movable plate bearing seat and is connected to the shoulder oil pool. The upper end of movable plate oil hole 1 extends to be connected to movable plate oil hole 2. The movable plate oil hole 2 extends to the outer periphery of the movable plate bearing seat and is connected to the gap.

[0019] In some embodiments,

[0020] The eccentric mass block is provided with an oil delivery channel 1, an oil delivery channel 2 and an oil delivery channel 3. One end of the oil delivery channel 1 is located at the radial inner periphery of the eccentric mass block and is connected to the shoulder oil pool, and the other end extends toward the interior of the eccentric mass block. The lower end of the oil delivery channel 2 is connected to the oil delivery channel 1, and the upper end of the oil delivery channel 2 is connected to the oil delivery channel 3. An oil delivery channel 4 is formed between the upper end of the eccentric mass block (15) and the movable disk substrate. The oil in the shoulder oil pool can be supplied to the pump body through the oil delivery channel 1, the oil delivery channel 2, the oil delivery channel 3 and the oil delivery channel 4 in sequence.

[0021] In some embodiments,

[0022] The oil delivery channel 1 is opposite to the shoulder oil pool in the height direction, the oil delivery channel 2 is located inside the eccentric mass block and extends along the axial direction of the crankshaft, and the oil delivery channel 3 is located at the upper end of the eccentric mass block and extends into an arc groove structure on the upper end face.

[0023] In some embodiments,

[0024] It also includes an upper bracket, an eccentric hole is formed on the inner periphery of the eccentric mass block, an oil drainage channel 1 is formed between the eccentric hole and the outer periphery of the moving plate bearing seat, an oil return hole is provided between the inner and outer peripheries of the eccentric mass block to form an oil drainage channel 2, an upper bracket oil pool is provided on the inner periphery of the upper bracket, an oil drainage channel 3 is formed between the upper bracket oil pool and the outer periphery of the eccentric mass block, an upper bracket oil return hole is provided between the inner and outer peripheries of the upper bracket to form an oil drainage channel 4, and the shoulder oil pool discharges oil to the outside of the upper bracket through the oil drainage channel 1, the oil drainage channel 2, the oil drainage channel 3 and the oil drainage channel 4 in sequence.

[0025] In some embodiments,

[0026] In the projection plane of the axial end face, the oil drainage channel 1 is an annular channel, the oil drainage channel 2 is a channel of a preset length 1 extending from the radial inner periphery to the radial outer periphery of the eccentric mass block, and the lower end height of the oil drainage channel 2 is higher than the upper end height of the shoulder oil pool, and the oil drainage channel 4 is a channel of a preset length 2 extending from the radial inner periphery to the radial outer periphery of the upper bracket, and the positions of the oil drainage channel 2 and the oil drainage channel 4 in the axial projection plane do not overlap.

[0027] In some embodiments,

[0028] The center line of the outer periphery of the eccentric mass block is concentric with the center line of the main shaft of the crankshaft, the inner periphery of the eccentric mass block is an eccentric hole, the center line of the eccentric hole is concentric with the center line of the crank, and the movable plate bearing seat and the eccentric hole of the eccentric mass block can move relative to each other.

[0029] The present invention also provides a scroll compressor, which comprises the above-mentioned pump body assembly.

[0030] The present invention also provides an air conditioner, which comprises the aforementioned scroll compressor.

[0031] A pump assembly, a scroll compressor and an air conditioner provided by the present invention have the following beneficial effects:

[0032] 1. The present invention forms a shoulder at the junction of the crank and the crankshaft body, and the width of the shoulder is larger than the width of the crank, so as to form a first step surface, and then combined with an eccentric mass block, which has a mating portion that cooperates with the first step surface, so that the mating portion of the eccentric mass block, the first step surface and the crank form at least a partial structure of a shoulder oil pool, so that the shoulder oil pool can store lubricating oil, so that when the compressor is started, the lubricating oil in the shoulder oil pool can be pumped to the pump body to supply oil thereto, and can quickly supply oil to the pump body back pressure chamber to reduce the risk of oil shortage and wear of the pump body during startup, and effectively solve the problem that during the initial startup of the scroll compressor, the compressor pump body oil supply system fails to reach balance, resulting in oil shortage and wear of the dynamic and static disks, thereby causing the compressor to malfunction during startup.

[0033] 2. The present invention also sets the outer circle of the eccentric mass block to be concentric with the crankshaft main axis, so that theoretically the eccentric mass block has no oil stirring power consumption inside the oil pool of the upper bracket, reducing the oil stirring loss of the crank and the oil disturbance loss of the moving plate bearing seat, and effectively improving the energy efficiency of the compressor; the present invention further preferably makes the center of the eccentric hole of the eccentric mass block concentric with the center line of the crank, so that the eccentric hole of the moving plate bearing seat and the eccentric hole of the eccentric mass block can move relative to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a cross-sectional view of the overall structure of the scroll compressor of the present invention;

[0035] Figure 2 is a partial enlarged view of a pump body assembly in a scroll compressor according to the first embodiment of the present invention;

[0036] Figure 3 It is an oil circuit diagram of a pump assembly part in a scroll compressor according to the first embodiment of the present invention;

[0037] Figure 4 yes Figure 3 A partial enlarged view of part A;

[0038] Figure 5 yes Figure 4 A schematic cross-sectional view of section B;

[0039] Figure 6 is a longitudinal cross-sectional view of a moving disk according to a first embodiment of the present invention;

[0040] Figure 7 is a three-dimensional structural diagram of an eccentric mass block according to the first embodiment of the present invention;

[0041] Figure 8 is a partial enlarged view of a pump body component in a scroll compressor according to a second embodiment of the present invention;

[0042] Fig. 9 This is an oil circuit diagram of a pump assembly in a scroll compressor according to a second embodiment of the present invention;

[0043] Fig.10 It is a three-dimensional structural diagram of the eccentric mass block of the second embodiment of the present invention.

[0044] The reference numerals are:

[0045] 1. Static plate; 2. Moving plate; 21. Moving plate substrate; 3. Upper bracket; 4. Motor; 5. Housing; 6. Lower cover; 7. Oil pump; 8. Lower bracket; 9. Lower support ring; 10. Motor rotor; 11. First balancing block; 12. Cross slip ring; 13. Upper cover; 14. Intake pipe; 15. Eccentric mass block; 151. Second step surface; 152. Eccentric hole; 153. Oil return hole; 154. Oil delivery channel three; 155. Oil delivery channel two; 157. Oil delivery channel one; 158. Matching part; 159. Connecting part; 16. Crankshaft; 160. Centerline of main shaft; 161. Shoulder; 162. Crank; 163. Center oil hole; 164. Center of crank; 165. Outer circle of main shaft; 17. Sealing ring; 18. Bearing; 100. First step surface; 200. Shoulder oil pool; 201. Moving plate bearing seat; 202. Moving plate oil hole one; 203. Moving plate oil hole two; 300. Upper bracket oil pool; 301. Upper bracket oil return hole; 302. Back pressure chamber; 400. Fastener; 500. Oil supply channel one; 600. Oil supply channel two. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0048] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0049] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0050] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0051] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0052] like Figure 1-10 As shown, the present invention provides a pump body assembly, which includes:

[0053] A crankshaft 16 and an eccentric mass block 15, wherein the crankshaft 16 includes a crankshaft body and a crank 162, wherein the crank 162 is located at the axial end of the crankshaft body, and a shoulder 161 is formed at the junction of the crank 162 and the crankshaft body. In a longitudinal cross section, the width of the shoulder 161 in a direction perpendicular to the central axis of the crankshaft 16 is greater than the width of the crank 162 in this direction, so as to form a first step surface 100 at the junction of the shoulder 161 and the crank 162. The eccentric mass block 15 includes a mating portion 158 mating with the first step surface 100, so that the mating portion 158 of the eccentric mass block 15, the first step surface 100 and the crank 162 form at least a partial structure of a shoulder oil pool 200, and the shoulder oil pool 200 can store lubricating oil, so that when the compressor is started, the lubricating oil in the shoulder oil pool 200 can be pumped into the pump body to supply oil to it.

[0054] The present invention forms a shoulder at the junction of the crank and the crankshaft body, and the width of the shoulder is larger than the width of the crank, thereby forming a first step surface, and then combined with an eccentric mass block, which has a mating portion that cooperates with the first step surface, so that the mating portion of the eccentric mass block, the first step surface and the crank form at least a partial structure of a shoulder oil pool, so that the shoulder oil pool can store lubricating oil, so that when the compressor is started, the lubricating oil in the shoulder oil pool can be pumped to the pump body to supply oil thereto, and can quickly supply oil to the pump body back pressure chamber to reduce the risk of oil shortage and wear of the pump body during startup, and effectively solve the problem that during the initial startup of the scroll compressor, the compressor pump body oil supply system fails to reach balance, resulting in oil shortage and wear of the movable and static disks, thereby causing the compressor to malfunction during startup.

[0055] In some embodiments,

[0056] The eccentric mass block 15 also includes a connecting portion 159 located on the outer periphery of the shoulder 161, and the connecting portion 159 is fastened to the shoulder 161 as a whole through a fastener 400 (preferably a threaded fastener such as a screw or a bolt); the mating portion 158 is connected to the connecting portion 159 and forms a second step surface 151 therebetween, and the second step surface 151 is arranged in close contact with the first step surface 100, and in the longitudinal cross-section and in a direction perpendicular to the axis of the crankshaft 16, the inner circumference size of the mating portion 158 is smaller than the inner circumference size of the connecting portion 159.

[0057] This is the preferred structural form of the eccentric mass block of the present invention, that is, the connecting part is located on the outer periphery of the shoulder and is fixed to the shoulder as a whole through fasteners, and can rotate as a whole with the crankshaft. The second step surface formed by the matching part and the connecting part is fitted with the first step surface of the shoulder, which can form an effective seal at the outer periphery of the shoulder oil pool, ensuring that a certain amount of oil can be stored in the shoulder oil pool and preventing leakage from the outer periphery. The inner circumference size of the matching part is larger than the inner circumference size of the connecting part, which can effectively form the second step surface.

[0058] In some embodiments,

[0059] It also includes a moving plate 2, which includes a moving plate bearing seat 201. At least a portion of the shaft section of the moving plate bearing seat 201 is sleeved on the outer periphery of the crank 162, so that the moving plate bearing seat 201 is driven by the crank 162 to drive the moving plate 2 to move. The shaft end of the moving plate bearing seat 201 is spaced from the first step surface 100 by a first preset distance, so that at least a portion of the structure of the shoulder oil pool 200 is located between the shaft end of the moving plate bearing seat 201 and the first step surface 100.

[0060] The present invention further preferably has a movable plate bearing seat sleeved on the outer periphery of the crank, and can be driven by the crank to move, thereby completing the function of compressing the refrigerant, and the axial end (preferably the lower end) of the movable plate bearing seat is spaced a first preset distance from the first step surface of the crankshaft shoulder, so that at least part of the structure of the shoulder oil pool can be located at the lower end of the movable plate bearing seat, while increasing the area of ​​the shoulder oil pool, the shoulder can also be supplied with oil through the movable plate bearing seat, thereby playing the role of oil supply.

[0061] In some embodiments,

[0062] It also includes a bearing 18, which is sleeved on the outer periphery of the crank 162, and the bearing 18 is located on the inner periphery of the movable plate bearing seat 201. The lower end of the bearing 18 is also spaced a second preset distance from the first step surface 100, and at least part of the structure of the shoulder oil pool 200 is located between the axial end of the movable plate bearing seat 201 and the first step surface 100.

[0063] The present invention further ensures, through the structure of the bearing, that while supporting the crank and the movable plate bearing seat, the range and area of ​​the shoulder oil pool can be increased through the lower end of the bearing, and an oil supply channel can be provided through the bearing to communicate with the shoulder oil pool to play an oil supply role.

[0064] In some embodiments,

[0065] The moving disk 2 includes a moving disk base plate 21, the moving disk bearing seat 201 is located at an axial end of the center of the moving disk base plate 21 and extends in a direction away from the moving disk base plate 21, an axial end of the crank 162 is opposite to the moving disk base plate 21 and is spaced a third preset distance from the moving disk base plate 21, forming an oil supply channel 1 500, an oil supply channel 2 600 is spaced between the outer periphery of the crank 162 and the inner periphery of the bearing 18, the crankshaft 16 has a center oil hole 163 inside, and the center oil hole 163 is connected to the shoulder oil pool 200 through the oil supply channel 1 500 and the oil supply channel 2 600 in sequence to provide lubricating oil to the shoulder oil pool 200.

[0066] The present invention can also connect the moving plate bearing seat at its lower end through the moving plate base plate, and an oil supply channel 1 is formed between the axial end of the crank (i.e., its upper end) and the moving plate base plate, which can be connected to the center oil hole to introduce oil from the center oil hole, and the oil supply channel 2 formed between the outer periphery of the crank and the inner periphery of the bearing can be connected to the oil supply channel 1, thereby forming oil supply paths that are connected in sequence, thereby realizing the oil supply function and effect to the shoulder oil pool.

[0067] Embodiment 1, as Figure 2-7 , in some embodiments,

[0068] A moving plate oil hole is also provided inside the moving plate bearing seat 201. The moving plate 2 includes a moving plate base plate 21. The moving plate bearing seat 201 is connected to one axial end of the moving plate base plate 21 and extends axially in a direction away from the moving plate bearing seat 201. There is a gap between the axial end of the eccentric mass block 15 facing the moving plate base plate 21 and the moving plate base plate 21. One end of the moving plate oil hole is connected to the shoulder oil pool 200, and the other end is connected to the gap between the eccentric mass block 15 and the moving plate base plate 21, thereby supplying oil to the pump body.

[0069] The present invention can connect with the shoulder oil pool through the moving plate oil hole arranged inside the moving plate bearing seat, and the other end of the moving plate oil hole is connected with the gap between the eccentric mass block and the moving plate base plate, so as to supply oil to the pump body, preferably the back pressure chamber of the pump body, so as to achieve the effect of quickly supplying oil to the back pressure chamber of the pump body when the compressor is started, so as to reduce the risk of oil shortage and wear of the pump body during startup.

[0070] In some embodiments,

[0071] The movable plate oil hole includes a movable plate oil hole 1 202 and a movable plate oil hole 203. The lower end of the movable plate oil hole 1 202 is located at the bottom end of the movable plate bearing seat 201 and is connected to the shoulder oil pool 200. The upper end of the movable plate oil hole 1 202 extends to be connected to the movable plate oil hole 203. The movable plate oil hole 203 extends to the outer periphery of the movable plate bearing seat 201 and is connected to the gap.

[0072] This is the preferred structural form of the movable plate oil hole of the present invention, that is, it includes movable plate oil holes one and two. The movable plate oil hole one preferably extends in the vertical direction, with its lower end connected to the shaft shoulder oil pool, and the upper end extending to the top of the movable plate bearing seat. The movable plate oil hole two is preferably connected to the movable plate oil hole one to guide the oil to the outside of the eccentric mass block to enter the back pressure chamber of the pump body, thereby achieving the effect of quickly supplying oil to the back pressure chamber of the pump body when the compressor is started.

[0073] Embodiment 2, as Figure 8-10 , in some embodiments,

[0074] The eccentric mass block 15 is provided with an oil delivery channel 1 157, an oil delivery channel 2 155 and an oil delivery channel 3 154, one end of the oil delivery channel 1 157 is located at the radial inner periphery of the eccentric mass block 15 and is connected to the shoulder oil pool 200, and the other end extends toward the interior of the eccentric mass block 15, the lower end of the oil delivery channel 2 155 is connected to the oil delivery channel 1 157, the upper end of the oil delivery channel 2 155 is connected to the oil delivery channel 3 154, and an oil delivery channel 4 (not shown) is formed between the upper end of the eccentric mass block 15 and the moving disk substrate 21, and the oil in the shoulder oil pool 200 can be supplied to the pump body through the oil delivery channel 1 157, the oil delivery channel 2 155, the oil delivery channel 3 154 and the oil delivery channel 4 in sequence.

[0075] This is the preferred structural form of embodiment 2 of the present invention. Through the oil delivery channels 1, 2 and 3 opened on the eccentric mass block, the oil delivery channel 1 can be connected with the shoulder oil pool, the oil delivery channel 2 can extend in the vertical direction to be connected with the oil delivery channel 1, and the oil delivery channel 3 is arranged on the upper end of the eccentric mass block to be connected with the oil delivery channel 2, so as to form the oil delivery channels 1, 2, 3 and 4 which are connected in sequence, so as to supply oil to the pump body, preferably the back pressure chamber of the pump body, so as to realize the effect of quickly supplying oil to the back pressure chamber of the pump body when the compressor is started, so as to reduce the risk of oil shortage and wear of the pump body when starting.

[0076] In some embodiments,

[0077] The oil delivery channel 1 157 is opposite to the shoulder oil pool 200 in the height direction, the oil delivery channel 2 155 is located inside the eccentric mass block 15 and extends along the axial direction of the crankshaft 16, and the oil delivery channel 3 154 is located at the upper end of the eccentric mass block 15 and extends into an arc groove structure on the upper end face.

[0078] This is the preferred structural form and position form of the oil delivery channels one, two and three of the present invention. The oil delivery channel one is preferably opposite to the shoulder oil pool and can be connected. The oil delivery channel preferably extends in the vertical direction. The oil delivery channel three is preferably formed in an arc groove structure on the upper end surface of the eccentric mass block, which can increase the oil supply area and increase the oil supply to the back pressure chamber of the pump body.

[0079] like Figure 8-10 This is a partial structural diagram of the second embodiment of the present invention. The side wall of the eccentric mass block 15 is provided with an oil delivery channel 2 155 and an end face oil groove (oil delivery channel 3 154). The lubricating oil in the oil pool at the bottom of the eccentric hole 152 of the eccentric mass block 15 is delivered to the oil delivery channel 3 154 through the oil delivery channel 1 157 and the oil delivery channel 2 155. Under the action of centrifugal force, the oil is sprayed toward the sealing ring 17 and then enters the back pressure chamber 302 to provide pump body lubrication to ensure the reliability of the compressor startup. At the same time, the side of the eccentric mass block 15 is provided with an oil return hole 153 for oil return.

[0080] In some embodiments,

[0081] It also includes an upper bracket 3, an eccentric hole 152 is formed on the inner periphery of the eccentric mass block 15, an oil drain channel 1 is formed between the eccentric hole 152 and the outer periphery of the movable plate bearing seat 201, an oil return hole 153 is provided between the inner and outer peripheries of the eccentric mass block 15 to form an oil drain channel 2, an upper bracket oil pool 300 is provided on the inner periphery of the upper bracket 3, an oil drain channel 3 is formed between the upper bracket oil pool 300 and the outer periphery of the eccentric mass block 15, an upper bracket oil return hole 301 is provided between the inner and outer peripheries of the upper bracket 3 to form an oil drain channel 4, and the shoulder oil pool 200 discharges oil to the outside of the upper bracket 3 through the oil drain channel 1, the oil drain channel 2, the oil drain channel 3 and the oil drain channel 4 in sequence.

[0082] The present invention also preferably forms an oil drain channel one between the outer periphery of the moving disk bearing seat and the eccentric hole on the inner periphery of the eccentric mass block, and the oil drain channel one is connected to the shoulder oil pool. An oil return hole is arranged between the inner and outer peripheries of the eccentric mass block to form an oil drain channel two connected to the oil drain channel one. An upper bracket oil pool and the outer periphery of the eccentric mass block form an oil drain channel three connected to the oil drain channel two. An upper bracket oil return hole is arranged between the inner and outer peripheries of the upper bracket to form an oil drain channel four, thereby forming oil drain channels one, two, three and four connected in sequence to discharge the oil in the shoulder oil pool to the oil pool of the compressor casing to discharge excess oil into the compressor casing.

[0083] In some embodiments,

[0084] In the projection plane of the axial end face, the oil drainage channel 1 is an annular channel, the oil drainage channel 2 is a channel of a preset length 1 extending from the radial inner periphery to the radial outer periphery of the eccentric mass block 15, and the lower end height of the oil drainage channel 2 is higher than the upper end height of the shoulder oil pool 200, and the oil drainage channel 4 is a channel of a preset length 2 extending from the radial inner periphery to the radial outer periphery of the upper bracket 3, and the positions of the oil drainage channel 2 and the oil drainage channel 4 in the axial projection plane do not overlap.

[0085] The present invention preferably configures the oil drainage channel 1 as an annular channel, which can increase the oil drainage area. Preferably, the lower end height of the oil drainage channel 2 is higher than the upper end height of the shoulder oil pool, which can ensure that a sufficient amount of lubricating oil can be stored in the shoulder oil pool to ensure the oil supply performance of the pump body when the compressor is started. The oil drainage channel 2 and the oil drainage channel 4 preferably do not overlap in position within the axial projection plane, which can increase the movement path and movement distance of the oil drainage, thereby effectively ensuring the amount of oil stored in the shoulder oil pool, reducing the oil drainage speed, and also effectively lubricating and cooling the eccentric mass block and the moving plate as well as the upper bracket and the eccentric mass block.

[0086] During the movement of the compressor of the present invention, the lubricating oil delivered from the central oil hole 163 of the crankshaft enters the bottom of the eccentric hole 152 of the eccentric mass block 15 through the gap between the bearing 18 of the moving plate and the crank 162, so that a certain amount of lubricating oil will always be stored at the bottom. When starting, the lubricating oil stored at the bottom passes through the moving plate oil hole 1 202 and the moving plate oil hole 2 203 of the moving plate bearing seat 201, and is sprayed toward the sealing ring 17 under the action of centrifugal force, and then enters the back pressure chamber 302 to lubricate the pump body, thereby reducing the risk caused by the failure to establish oil supply and lubrication in time when starting the machine, and ensuring the reliability of the operation of the compressor. At the same time, the eccentric mass block 15 is provided with an oil return hole 153, which is higher than the oil pool at the bottom of the eccentric hole 152 of the eccentric mass block 15, and is mainly used for oil return during the normal operation of the compressor, and passes through the oil return hole 153 to the upper bracket oil pool 300, and then returns to the bottom oil pool of the compressor lower cover through the upper bracket oil return hole 301, thereby forming a lubricating oil circuit circulation for the whole machine.

[0087] In some embodiments,

[0088] The center line of the outer periphery of the eccentric mass block 15 is concentric with the main shaft center line 160 of the crankshaft 16, the inner periphery of the eccentric mass block 15 is an eccentric hole 152, the center line of the eccentric hole 152 is concentric with the center line of the crank 162, and the movable plate bearing seat 201 and the eccentric hole of the eccentric mass block 15 can move relative to each other.

[0089] The present invention also sets the outer circle of the eccentric mass block to be concentric with the crankshaft main axis, so that theoretically the eccentric mass block has no oil stirring power consumption inside the oil pool of the upper bracket, reducing the oil stirring loss of the crank and the oil disturbance loss of the moving plate bearing seat, and effectively improving the energy efficiency of the compressor; the present invention further preferably makes the center of the eccentric hole of the eccentric mass block concentric with the center line of the crank, so that the eccentric hole of the moving plate bearing seat and the eccentric hole of the eccentric mass block can move relative to each other.

[0090] like Figure 2 This is a partial structural diagram of the embodiment 1 of the present invention. The lower second step surface 151 of the eccentric mass block 15 is fixed on the shoulder 161 of the crankshaft 16 and then fixed by screws. The outer circle of the eccentric mass block 15 is concentric with the center line 160 (i.e., the rotation center) of the main shaft of the crankshaft 16. An eccentric hole 152 is provided in the eccentric mass block 15. The center of the eccentric hole 152 is concentric with the center line of the crank 162. The moving plate bearing seat 201 of the moving plate 2 has an internal cold-pressed sliding bearing (bearing 18) installed on the crank 162. The moving plate bearing seat 201 is built into the eccentric hole 152 of the eccentric mass block 15 and has a gap with the eccentric hole 152 (the two move without friction). The moving plate bearing seat 201 is provided with oil holes (moving plate oil hole 1 202 and moving plate oil hole 2 203). Figure 4-7The center of the eccentric hole 152 is concentric with the center line of the crank 162, so that the movable plate bearing seat 201 and the eccentric hole of the eccentric mass block 15 can move relative to each other. Since the outer circle of the eccentric mass block 15 is concentric with the crankshaft 16, the crank oil stirring loss is theoretically zero, thereby reducing the oil stirring loss.

[0091] The present invention fixes a circular eccentric mass block on the crankshaft shoulder. The bottom of the eccentric hole of the eccentric mass block can store a certain amount of lubricating oil. The bottom lubricating oil is quickly supplied to the pump body back pressure chamber through the movable plate bearing seat oil channel or the eccentric mass block oil channel to reduce the risk of oil shortage and wear of the pump body during startup. At the same time, the outer circle of the eccentric mass block is concentric with the crankshaft main axis. In theory, the eccentric mass block has no oil stirring power consumption inside the upper bracket oil pool, thereby reducing the oil disturbance loss of the movable plate bearing seat and improving the energy efficiency of the compressor.

[0092] The following technical effects can be achieved:

[0093] 1. A certain amount of lubricating oil is stored at the bottom of the eccentric mass block, which can quickly supply oil to the pump body when the machine is turned on, solving the problem of oil shortage at startup.

[0094] 2. The outer circle of the eccentric mass block is concentric with the center of the main shaft. Theoretically, there is no oil disturbance power consumption, which solves the problem of oil stirring loss.

[0095] The present invention also provides a scroll compressor, which comprises the above-mentioned pump body assembly.

[0096] The present invention proposes a scroll compressor, on which an eccentric mass block is fixed on a crankshaft shoulder. The outer circle of the eccentric mass block is concentric with the center of the main shaft, and an eccentric hole is provided inside the eccentric mass block. The eccentric hole is concentric with the crankshaft crank, and a moving plate bearing seat is embedded in the eccentric hole. There is a gap between the moving plate bearing seat and the eccentric hole. A certain amount of lubricating oil is stored at the bottom of the eccentric mass block. When the compressor is started, the lubricating oil at the bottom can quickly supply oil to the pump body, thereby ensuring that the compressor can be started safely and stably.

[0097] like Figure 1 As shown, the scroll compressor of the present invention is mainly composed of a motor 4, an upper bracket 3, a lower bracket 8, a stator 1, a moving disc 2, a cross slip ring 12, a crankshaft 16, etc. The motor 4 is fixed to the housing 5 by a shrink sleeve, and the upper bracket 3 is fixed to the housing 5 by spot welding. The moving disc 2 and the stator 1 are installed on the upper bracket 3 opposite to each other with a phase angle difference of 180 degrees. The moving disc 2 moves under the drive of the crankshaft 16 and meshes with the stator 1 to form a series of crescent-shaped closed cavities that are isolated from each other and have continuously changing volumes. The stator 1 is fixed to the upper bracket 3 by screw fasteners. The lower bracket 8 is fixed to the lower support ring 9 by screws, and the lower support ring 9 is fixed to the housing 5 by spot welding.

[0098] When the compressor is running, the motor 4 drives the crankshaft 16 to rotate, and the crank of the crankshaft 16 drives the moving plate 2 to move. Under the anti-rotation limit of the cross slip ring 12, the moving plate 2 performs translational motion around the center of the crankshaft 16 at a fixed radius. The refrigerant entering from the suction pipe 14 is sucked into the crescent-shaped suction cavity formed by the moving plate 2 and the static plate 1, and after being compressed, it is discharged from the exhaust hole of the static plate 1, enters the cavity between the upper cover 13 and the static plate 1, and then enters the cavity between the upper bracket 3 and the motor 4 through the exhaust groove of the static plate 1 and the upper bracket 3. Part of it enters the lower end of the motor 4 through the flow groove between the motor 4 and the housing 5, and finally the high-pressure exhaust refrigerant is discharged through the exhaust pipe

[0099] The present invention also provides an air conditioner, which comprises the aforementioned scroll compressor.

[0100] In order to solve the problem of lack of oil and easy wear of the moving and static disks during the startup of the compressor, the present invention proposes a scroll compressor, an eccentric mass block is fixed on the crankshaft shoulder of the compressor, the outer circle of the eccentric mass block is concentric with the center of the main shaft, an eccentric hole is provided inside, the eccentric hole is concentric with the crankshaft crank, the moving disk bearing seat is embedded in the eccentric hole, there is a gap between the moving disk bearing seat and the eccentric hole, a certain amount of lubricating oil is stored at the bottom of the eccentric mass block, when the compressor is started, the bottom lubricating oil can quickly supply oil to the pump body, ensuring that the compressor can be started safely and stably. At the same time, the eccentric mass block can also reduce the oil stirring loss caused by the eccentric operation of the moving disk bearing seat inside the upper bracket oil pool, thereby improving the energy efficiency of the compressor.

[0101] The above description is only 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 principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A pump assembly, characterized in that: include: A crankshaft (16) and an eccentric mass block (15), wherein the crankshaft (16) comprises a crankshaft body and a crank (162), wherein the crank (162) is located at an axial end of the crankshaft body, and a shoulder (161) is formed at the joint between the crank (162) and the crankshaft body, wherein in a longitudinal cross section, the width of the shoulder (161) in a direction perpendicular to the central axis of the crankshaft (16) is greater than the width of the crank (162) in the direction, so as to provide a space between the shoulder (161) and the crank (162). A first step surface (100) is formed at the joint, and the eccentric mass block (15) includes a matching portion (158) that matches the first step surface (100), so that the matching portion (158) of the eccentric mass block (15), the first step surface (100) and the crank (162) form at least a partial structure of a shoulder oil pool (200), and the shoulder oil pool (200) can store lubricating oil, so that when the compressor is started, the lubricating oil in the shoulder oil pool (200) can be pumped to the pump body to supply oil to it.

2. The pump assembly according to claim 1, characterized in that: The eccentric mass block (15) further comprises a connecting portion (159) located on the outer periphery of the shaft shoulder (161), wherein the connecting portion (159) is fastened to the shaft shoulder (161) as a whole via a fastener (400); the matching portion (158) is connected to the connecting portion (159) and a second step surface (151) is formed between the two, wherein the second step surface (151) is arranged in close contact with the first step surface (100), and within the longitudinal cross section and in a direction perpendicular to the axis of the crankshaft (16), the inner circumference of the matching portion (158) is smaller than the inner circumference of the connecting portion (159).

3. The pump assembly according to claim 1 or 2, characterized in that: The invention also comprises a movable plate (2), wherein the movable plate (2) comprises a movable plate bearing seat (201), wherein at least a part of the shaft section of the movable plate bearing seat (201) is sleeved on the outer periphery of the crank (162), so as to drive the movable plate bearing seat (201) through the crank (162) to drive the movable plate (201) to move, and the shaft end of the movable plate bearing seat (201) is spaced from the first step surface (100) by a first preset distance, so that at least a part of the structure of the shaft shoulder oil pool (200) is located between the shaft end of the movable plate bearing seat (201) and the first step surface (100).

4. The pump assembly according to claim 3, characterized in that: It also includes a bearing (18), wherein the bearing (18) is sleeved on the outer periphery of the crank (162), and the bearing (18) is located on the inner periphery of the movable plate bearing seat (201), and the lower end of the bearing (18) is also spaced apart from the first step surface (100) by a second preset distance, and at least a portion of the structure of the shoulder oil pool (200) is located between the shaft end of the movable plate bearing seat (201) and the first step surface (100).

5. The pump assembly according to claim 4, characterized in that: The movable plate (2) comprises a movable plate base plate (21), the movable plate bearing seat (201) is located at one axial end of the center of the movable plate base plate (21) and extends in a direction away from the movable plate base plate (21), one axial end of the crank (162) is opposite to the movable plate base plate (21) and is spaced apart from the movable plate base plate (21) by a third preset distance, forming an oil supply channel 1 (500), an oil supply channel 2 (600) is spaced apart between the outer periphery of the crank (162) and the inner periphery of the bearing (18), the crankshaft (16) has a central oil hole (163) inside, and the central oil hole (163) is connected to the shoulder oil pool (200) through the oil supply channel 1 (500) and the oil supply channel 2 (600) in sequence, so as to provide lubricating oil to the shoulder oil pool (200).

6. The pump assembly according to any one of claims 3 to 5, characterized in that: A moving disc oil hole is also provided inside the moving disc bearing seat (201); the moving disc (2) includes a moving disc base plate (21); the moving disc bearing seat (201) is connected to one axial end of the moving disc base plate (21) and extends axially in a direction away from the moving disc bearing seat (201); a gap is provided between the axial end of the eccentric mass block (15) facing the moving disc base plate (21) and the moving disc base plate (21); one end of the moving disc oil hole is connected to the shaft shoulder oil pool (200), and the other end is connected to the gap between the eccentric mass block (15) and the moving disc base plate (21), thereby supplying oil to the pump body.

7. The pump assembly according to claim 6, characterized in that: The movable plate oil hole comprises movable plate oil hole one (202) and movable plate oil hole two (203); the lower end of the movable plate oil hole one (202) is located at the bottom end of the movable plate bearing seat (201) and is connected to the shaft shoulder oil pool (200); the upper end of the movable plate oil hole one (202) extends to be connected to the movable plate oil hole two (203); the movable plate oil hole two (203) extends to the outer periphery of the movable plate bearing seat (201) and is connected to the gap.

8. The pump assembly according to claim 3, characterized in that: The movable plate (2) comprises a movable plate base plate (21); the eccentric mass block (15) is provided with an oil delivery channel 1 (157), an oil delivery channel 2 (155) and an oil delivery channel 3 (154); one end of the oil delivery channel 1 (157) is located at the radial inner periphery of the eccentric mass block (15) and is connected to the shoulder oil pool (200); the other end of the oil delivery channel 1 (157) extends toward the interior of the eccentric mass block (15); the lower end of the oil delivery channel 2 (155) is connected to the shoulder oil pool (200); The oil delivery channel 1 (157) is connected, the upper end of the oil delivery channel 2 (155) is connected to the oil delivery channel 3 (154), and the oil delivery channel 4 is formed between the upper end of the eccentric mass block (15) and the movable disk base plate (21). The oil in the shoulder oil pool (200) can be supplied to the pump body through the oil delivery channel 1 (157), the oil delivery channel 2 (155), the oil delivery channel 3 (154) and the oil delivery channel 4 in sequence.

9. The pump assembly according to claim 8, characterized in that: The oil delivery channel 1 (157) is opposite to the shoulder oil pool (200) in the height direction, the oil delivery channel 2 (155) is located inside the eccentric mass block (15) and extends along the axial direction of the crankshaft (16), and the oil delivery channel 3 (154) is located at the upper end of the eccentric mass block (15) and extends on the upper end surface to form an arc groove structure.

10. The pump assembly according to claim 3, characterized in that: It also includes an upper bracket (3), an eccentric hole (152) is formed on the inner periphery of the eccentric mass block (15), an oil discharge channel 1 is formed between the eccentric hole (152) and the outer periphery of the movable plate bearing seat (201), an oil return hole (153) is provided between the inner and outer peripheries of the eccentric mass block (15) to form an oil discharge channel 2, an upper bracket oil pool (300) is provided on the inner periphery of the upper bracket (3), an oil discharge channel 3 is formed between the upper bracket oil pool (300) and the outer periphery of the eccentric mass block (15), an upper bracket oil return hole (301) is provided between the inner and outer peripheries of the upper bracket (3) to form an oil discharge channel 4, and the shoulder oil pool (200) discharges oil to the outside of the upper bracket (3) through the oil discharge channel 1, the oil discharge channel 2, the oil discharge channel 3 and the oil discharge channel 4 in sequence.

11. The pump assembly according to claim 10, characterized in that: In the projection plane of the axial end face, the oil drainage channel 1 is an annular channel, the oil drainage channel 2 is a channel of a preset length 1 extending from the radial inner periphery of the eccentric mass block (15) to the radial outer periphery, and the lower end height of the oil drainage channel 2 is higher than the upper end height of the shoulder oil pool (200), and the oil drainage channel 4 is a channel of a preset length 2 extending from the radial inner periphery of the upper bracket (3) to the radial outer periphery, and the positions of the oil drainage channel 2 and the oil drainage channel 4 in the axial projection plane do not overlap.

12. The pump assembly according to claim 3, characterized in that: The center line of the outer periphery of the eccentric mass block (15) is concentric with the center line (160) of the main shaft of the crankshaft (16), the inner periphery of the eccentric mass block (15) is an eccentric hole (152), the center line of the eccentric hole (152) is concentric with the center line of the crank (162), and the movable plate bearing seat (201) and the eccentric hole of the eccentric mass block (15) can move relative to each other.

13. A scroll compressor, characterized in that: The invention comprises a pump body assembly according to any one of claims 1 to 12.

14. An air conditioner, characterized in that: Includes the scroll compressor as described in claim 13.

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