A sliding vane mechanism applied to a rotary compressor

Abstract

The utility model discloses a slide vane mechanism for rotor compressor, including first, second slide, first, second slide fit and connect integral, first, second slide same direction one end always be located in cylinder as inside end, another end as outside end in same direction, first slide is equipped with a plurality of mounting blocks, and each mounting block is linear distribution in inside end to outside end direction, second slide is equipped with a plurality of mounting slots, and each mounting block is correspondingly clamped into the mounting slot, and each mounting block has a through cavity inside, first slide inside corresponds each mounting block and is equipped with main oil circuit, connecting oil circuit respectively, and main oil circuit communicates with the through cavity one end in corresponding mounting block through connecting oil circuit, and each main oil circuit is connected in series and communicates and forms series connection oil circuit, wherein first stage main oil circuit beginning end is arranged on first slide and forms oil inlet, and last stage main oil circuit is arranged on first slide outside end and forms oil outlet, the utility model can form multiple oil seal line, and the ability of preventing leakage is stronger.

Description

Technical Field

[0001] This utility model relates to the field of vane mechanism for rotary compressors, specifically a vane mechanism applied to rotary compressors. Background Technology

[0002] A rotary compressor is driven by an engine or an electric motor. The compressor rotor rotates along the cylinder wall. The vanes are integrated with the compressor rotor and swing back and forth between the vanes. The compressor is sealed by an oil film formed by the lubricating oil between the moving parts. When the motor drives the crankshaft, it causes a change in the volume of the cavity formed by the compressor roller outer ring, cylinder bore, and vanes, thus completing the intake and exhaust process.

[0003] In a vane compressor, a specially shaped sealed working chamber is formed between the rotor, vanes, and cylinder. The vanes and cylinder are sealed by an oil film formed by lubricating oil. When the compressor is running, the vanes need to reciprocate continuously. Over time, the vanes and cylinder walls may wear and deform, causing the mixture of gas and coolant to leak from between the vanes and cylinder walls to the outside, reducing the efficiency of the compressor.

[0004] The existing sliding vane has only one sealing line between its side and the cylinder wall, resulting in poor leakage prevention and low utilization of lubricating oil. Utility Model Content

[0005] This invention provides a vane mechanism for a rotary compressor to solve the problem of poor leakage prevention capability of vanes in existing rotary compressors.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A vane mechanism for a rotary compressor includes a first vane (1) and a second vane (2). One side of the first vane (1) is attached to one side of the second vane (2), and the first vane (1) and the second vane (2) are connected as one unit. One end of the first vane (1) and the second vane (2) in the same direction is always located inside the cylinder. The end of the first vane (1) and the second vane (2) that is always located inside the cylinder is taken as the inner end, and the other end of the first vane (1) and the second vane (2) in the same direction is taken as the outer end.

[0008] The first slide (1) has several mounting blocks on the side that is in contact with the second slide (2). Each mounting block is arranged in a straight line from the inner end to the outer end of the first slide (1). The second slide (2) has several mounting grooves on the side that is in contact with the first slide (1). Each mounting block is inserted into the mounting groove in a corresponding manner. Each mounting block has a through cavity that passes through the mounting block.

[0009] The first slide (1) has a main oil circuit and a connecting oil circuit for each mounting block. The main oil circuit of each mounting block is connected to one end of the cavity inside the corresponding mounting block through the connecting oil circuit. The main oil circuit of the mounting block closest to the inner end of the first slide (1) is located on the side of the first slide (1) away from the second slide (2) to form an oil inlet (8). The main oil circuit of the mounting block closest to the outer end of the first slide (1) is located on the outer end of the first slide (1) to form an oil outlet. The main oil circuits of each mounting block are connected in series to form a series oil circuit.

[0010] Furthermore, the first sliding piece (1) and the second sliding piece (2) are fixedly connected as a whole by bolts.

[0011] Furthermore, the inner ends of the first slider (1) and the second slider (2) are detachably connected by the fitting (3).

[0012] Furthermore, the assembly (3) includes a U-shaped part (32), and the inner sides of the two arms of the U-shaped part (32) are respectively provided with locking blocks (31); the two symmetrical sides of the inner ends of the first slide (1) and the second slide (2) are respectively provided with locking grooves (9), and the locking grooves (9) on the same side of the inner ends of the first slide (1) and the second slide (2) are connected to form a connecting locking groove; the U-shaped part (32) is fitted into the inner ends of the first slide (1) and the second slide (2) through the U-shaped opening, and the locking blocks (31) on the inner sides of the two arms of the U-shaped part (32) are correspondingly inserted into the connecting locking grooves on both sides of the inner ends.

[0013] Furthermore, each card block (31) is fitted with a corresponding connecting slot.

[0014] Furthermore, inside the first slide (1), a one-way valve (12) is provided between the main oil circuit corresponding to the mounting block closest to the inner end of the first slide (1) and the adjacent next-level main oil circuit. The end of the main oil circuit corresponding to the mounting block closest to the inner end of the first slide (1) is connected to the beginning of the adjacent next-level main oil circuit through the one-way valve (12).

[0015] Furthermore, inside the first sliding plate (1), a one-way valve (12) is provided between each two adjacent main oil circuits in the series oil circuit. In each pair of adjacent main oil circuits, the end of the upper-level main oil circuit is connected to the beginning of the lower-level main oil circuit through the one-way valve (12).

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] This utility model has a novel and reasonable structure. Compared with the existing sliding vane, the sliding vane mechanism proposed in this utility model has multiple mounting blocks that are inserted into the mounting groove of the second sliding vane. As a result, multiple oil sealing lines can be formed between the sliding vane mechanism and the cylinder wall, resulting in stronger anti-leakage capability.

[0018] The sliding vane mechanism proposed in this invention makes fuller use of lubricating oil, resulting in a more stable oil sealing film between the sliding vane and the cylinder after molding. Attached Figure Description

[0019] Figure 1 This is an exploded view of the slider structure of this utility model.

[0020] Figure 2 This is a schematic planar view of the slider of this utility model. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] like Figure 1 , Figure 2 As shown, this embodiment discloses a vane mechanism applied to a rotary compressor, including a first vane 1 and a second vane 2. The first vane 1 is located above the second vane 2, and the bottom surface of the first vane 1 is in contact with the top surface of the second vane 2.

[0023] The first slide plate 1 has several vertical threaded through holes 15, and the top of the second slide plate 2 has several threaded blind holes, the positions of which correspond one-to-one with the threaded through holes 15. After the first slide plate 1 and the second slide plate 2 are fitted together, the first slide plate 1 and the second slide plate 2 are fixedly connected as a whole to form a combined slide plate by bolts passing through each threaded through hole 15 and threaded blind hole.

[0024] In the combined sliding vane, the front ends of the first sliding vane 1 and the second sliding vane 2 are always located inside the cylinder, with the front ends of the first sliding vane 1 and the second sliding vane 2 always located inside the cylinder as the inner end, and the rear ends of the first sliding vane 1 and the second sliding vane 2 as the outer end.

[0025] The bottom surface of the first sliding plate 1 is provided with several mounting blocks, and the top surface of the second sliding plate 2 is provided with several mounting grooves. The mounting blocks are arranged in a straight line from front to back on the bottom surface of the first sliding plate 1, and the mounting grooves are arranged in a straight line from front to back on the top surface of the second sliding plate 2, with each mounting groove corresponding to a mounting block. When the first sliding plate 1 is attached to the second sliding plate 2, each mounting block on the bottom surface of the first sliding plate 1 is inserted into a mounting groove on the top surface of the second sliding plate 2, and each mounting block has a through cavity that runs vertically through the mounting block.

[0026] The first sliding vane 1 has a main oil passage and a connecting oil passage inside each mounting block. The main oil passage of each mounting block is connected to the upper end of the cavity inside the corresponding mounting block through the connecting oil passage. The main oil passage of the mounting block closest to the inner end of the first sliding vane 1 starts at the top surface of the first sliding vane 1 opposite to the second sliding vane 2, forming an oil inlet 8. The main oil passage of the mounting block closest to the outer end of the first sliding vane 1 ends at the outer end of the first sliding vane 1, forming an oil outlet. The main oil passages of each mounting block are connected in series to form a series oil passage. In each pair of adjacent main oil passages in the series oil passage, the end of the upper-level main oil passage is connected to the beginning of the lower-level main oil passage.

[0027] Inside the first slide plate 1, a one-way valve 12 is provided between the main oil circuit corresponding to the mounting block closest to the inner end of the first slide plate 1 and the adjacent next-level main oil circuit. The end of the main oil circuit corresponding to the mounting block closest to the inner end of the first slide plate 1 is connected to the beginning of the adjacent next-level main oil circuit through the one-way valve 12, and the direction of the one-way valve 12 is from the main oil circuit corresponding to the mounting block closest to the inner end of the first slide plate 1 to the adjacent next-level main oil circuit.

[0028] Alternatively, inside the first sliding plate 1, a one-way valve 12 is provided between each two adjacent main oil circuits in the series oil circuit. In each pair of adjacent main oil circuits, the end of the upper-level main oil circuit is connected to the beginning of the lower-level main oil circuit through the one-way valve 12, and the one-way valve 12 is connected in the direction from the upper-level main oil circuit to the lower-level main oil circuit.

[0029] This embodiment uses two mounting blocks and two mounting slots as an example for illustration. Figure 1 , Figure 2 As shown, the bottom surface of the first sliding piece 1 is provided with a first mounting block 4 and a second mounting block 6. The first mounting block 4 is close to the inner end of the first sliding piece 1, and the second mounting block 6 is close to the outer end of the first sliding piece 1. The top surface of the second sliding piece 2 is provided with a first mounting groove 5 and a second mounting groove 7. The first mounting groove 5 is close to the inner end of the second sliding piece 2, and the second mounting groove 7 is close to the outer end of the second sliding piece 2. The first mounting block 4 and the second mounting block 6 are inserted into the first mounting groove 5 and the second mounting groove 7 respectively, and each of the first mounting block 4 and the second mounting block 6 has a vertical through cavity.

[0030] Correspondingly, the first sliding plate 1 has a first main oil passage 11 and a first connecting oil passage 14 inside the first mounting block 4, and the first sliding plate 1 has a second main oil passage 13 and a second connecting oil passage 10 inside the second mounting block 6. The first main oil passage 11 starts at the top surface of the first sliding plate 1 to form an oil inlet 8. The upper end of the first connecting oil passage 14 is connected to the bottom of the first main oil passage 11, and the lower end of the first connecting oil passage 14 is connected to the upper end of the inner cavity of the first mounting block 4. The end of the first main oil passage 11 is connected to the beginning of the second main oil passage 13 through a one-way valve 12, and the one-way valve 12 is connected from the first main oil passage 11 to the second main oil passage 13. The end of the second main oil passage 13 is located at the outer end of the first sliding plate 1 to form an oil outlet. The upper end of the second connecting oil passage 10 is connected to the bottom of the second main oil passage 13, and the lower end of the second connecting oil passage 10 is connected to the upper end of the inner cavity of the second mounting block 6.

[0031] Thus, the first main oil passage 11 and the second main oil passage 13 are connected in series to form a series oil passage. Lubricating oil is injected into the first main oil passage 11 through the oil inlet 8. The lubricating oil will first flow into the internal cavity of the first mounting block 4 through the first connecting oil passage 14. Then, the lubricating oil inside the first main oil passage 11 is injected into the second main oil passage 13 through the one-way valve 12. In the second main oil passage 13, it first flows into the internal cavity of the second mounting block 6 through the second connecting oil passage 10.

[0032] Since the first mounting block 4, which is closer to the inner end of the first sliding vane 1 and the second sliding vane 2, is filled with lubricating oil before the second mounting block 6, the inner ends of the first sliding vane 1 and the second sliding vane 2, which are always located inside the cylinder, form a sealing oil film with the cylinder wall first, and the outer ends of the first sliding vane 1 and the second sliding vane 2 form a sealing oil film with the cylinder wall later. Since the first sliding vane 1 and the second sliding vane 2 need to reciprocate, and the inner ends of the first sliding vane 1 and the second sliding vane 2 are located inside the cylinder even when reciprocating, the first sliding vane 1 and the second sliding vane 2 can quickly form a sealing oil film with the cylinder wall. Moreover, the lubricating oil spreads from front to back (i.e. from the inner end to the outer end), which can have a better sealing effect.

[0033] Since the first slide plate 1 and the second slide plate 2 need to reciprocate during operation, the lubricating oil in the second main oil circuit 13 may flow into the first main oil circuit 11 under the action of inertia, resulting in insufficient lubrication at the outer ends of the first slide plate 1 and the second slide plate 2. Therefore, in this embodiment, a one-way valve 12 is set between the first main oil circuit 11 and the second main oil circuit 13 to solve the above problem.

[0034] In this embodiment, by setting multiple mounting blocks and cooperating with corresponding main oil passages and connecting oil passages, multiple oil seal lines can be formed, thus enhancing the leak-proof capability. It should be noted that although this embodiment uses two mounting blocks and their respective corresponding main oil passages and connecting oil passages as an example, the number of mounting blocks is not limited to two. Technical solutions based on this invention and employing other numbers of mounting blocks should also be considered within the protection scope of this invention.

[0035] In this embodiment, the inner ends of the first slider 1 and the second slider 2 are detachably connected via the assembly 3. Specifically, the assembly 3 includes a U-shaped component 32, with locking blocks 31 on the inner sides of its two arms. The left and right symmetrical sides of the inner ends of the first slider 1 and the second slider 2 are respectively provided with slots 9, and the slots 9 on the same side of the inner ends of the first slider 1 and the second slider 2 are connected to form a connecting slot. The U-shaped component 32 is fitted onto the inner ends of the first slider 1 and the second slider 2 through a U-shaped opening. The locking blocks 31 on the inner sides of the two arms of the U-shaped component 32 are correspondingly engaged with the connecting slots on both sides of the inner ends, with each locking block 31 fitting with its corresponding connecting slot with a clearance fit.

[0036] The preferred embodiments of this utility model have been described in detail above with reference to the accompanying drawings. These embodiments are merely descriptions of preferred embodiments and are not intended to limit the concept and scope of this utility model. The various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. Such combinations, as long as they do not violate the spirit of this utility model, should also be considered as part of this disclosure. To avoid unnecessary repetition, this utility model will not further describe all possible combinations.

[0037] This utility model is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this utility model and without departing from the design idea of ​​this utility model, all modifications and improvements made by those skilled in the art to the technical solution of this utility model should fall within the protection scope of this utility model. The technical content for which protection is sought in this utility model has been fully recorded in the claims.

Claims

1. A vane mechanism applied to a rotary compressor, characterized in that, Includes a first sliding plate (1) and a second sliding plate (2). One side of the first sliding plate (1) is attached to one side of the second sliding plate (2), and the first sliding plate (1) and the second sliding plate (2) are connected as one unit. One end of the first sliding plate (1) and the second sliding plate (2) in the same direction is always located inside the cylinder. The end of the first sliding plate (1) and the second sliding plate (2) that is always located inside the cylinder is taken as the inner end, and the other end of the first sliding plate (1) and the second sliding plate (2) in the same direction is taken as the outer end. The first slide (1) has several mounting blocks on the side that is in contact with the second slide (2). Each mounting block is arranged in a straight line from the inner end to the outer end of the first slide (1). The second slide (2) has several mounting grooves on the side that is in contact with the first slide (1). Each mounting block is inserted into the mounting groove in a corresponding manner. Each mounting block has a through cavity that passes through the mounting block. The first slide (1) has a main oil circuit and a connecting oil circuit for each mounting block. The main oil circuit of each mounting block is connected to one end of the cavity inside the corresponding mounting block through the connecting oil circuit. The main oil circuit of the mounting block closest to the inner end of the first slide (1) is located on the side of the first slide (1) away from the second slide (2) to form an oil inlet (8). The main oil circuit of the mounting block closest to the outer end of the first slide (1) is located on the outer end of the first slide (1) to form an oil outlet. The main oil circuits of each mounting block are connected in series to form a series oil circuit.

2. The vane mechanism applied to a rotary compressor according to claim 1, characterized in that, The first sliding piece (1) and the second sliding piece (2) are fixedly connected as one piece by bolts.

3. The vane mechanism applied to a rotary compressor according to claim 1, characterized in that, The inner ends of the first slider (1) and the second slider (2) are detachably connected by the fitting (3).

4. A vane mechanism for a rotary compressor according to claim 3, characterized in that, The assembly (3) includes a U-shaped part (32), and the inner sides of the two arms of the U-shaped part (32) are respectively provided with locking blocks (31); the two symmetrical sides of the inner ends of the first slide (1) and the second slide (2) are respectively provided with locking grooves (9), and the locking grooves (9) on the same side of the inner ends of the first slide (1) and the second slide (2) are connected to form a connecting locking groove; the U-shaped part (32) is fitted into the inner ends of the first slide (1) and the second slide (2) through the U-shaped opening, and the locking blocks (31) on the inner sides of the two arms of the U-shaped part (32) are inserted into the connecting locking grooves on both sides of the inner ends one by one.

5. A vane mechanism for a rotary compressor according to claim 4, characterized in that, Each card block (31) is fitted with the corresponding connecting slot.

6. A vane mechanism for a rotary compressor according to claim 1, characterized in that, Inside the first slide (1), a one-way valve (12) is provided between the main oil circuit corresponding to the mounting block closest to the inner end of the first slide (1) and the adjacent next-level main oil circuit. The end of the main oil circuit corresponding to the mounting block closest to the inner end of the first slide (1) is connected to the beginning of the adjacent next-level main oil circuit through the one-way valve (12).

7. A vane mechanism for a rotary compressor according to claim 1, characterized in that, Inside the first sliding plate (1), a one-way valve (12) is provided between each two adjacent main oil circuits in the series oil circuit. In each two adjacent main oil circuits, the end of the upper-level main oil circuit is connected to the beginning of the lower-level main oil circuit through the one-way valve (12).

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