CN117605691A - Low-rotation-speed oil absorption mechanism of vortex compressor - Google Patents

Abstract

The invention discloses a low-rotation-speed oil absorption mechanism of a scroll compressor, which comprises an oil cylinder, wherein the oil cylinder comprises an oil inlet and an oil outlet, an oil cavity is arranged between the oil inlet and the oil outlet, an eccentric wheel assembly is movably connected in the oil cavity, an extrusion cavity is formed between one side, close to the oil outlet, of the eccentric wheel assembly and the oil cavity, and when the eccentric wheel assembly acts, the volume of the extrusion cavity changes. The invention provides a low-rotation-speed oil absorption mechanism of a scroll compressor, which can continuously convey oil in a low-speed state without depending on centrifugal force, can realize oil delivery change through rotation speed change, and can not generate fault phenomenon that oil cannot be delivered when part of rotation speed is adopted.

Description

Low-rotation-speed oil absorption mechanism of vortex compressor

Technical Field

The invention relates to the technical field of compressors, in particular to a low-rotation-speed oil absorption mechanism of a scroll compressor.

Background

The scroll compressor generally adopts a vane centrifugal oil suction structure to pump oil so as to achieve the aim of lubricating each friction pair, for example, publication number CN211343340U, discloses an oil path structure for a rotary machine and a scroll compressor with the same, wherein an oil pumping oil path is formed on a rotary part of the rotary machine, the rotary part comprises a driving shaft and a motor rotor, the bottom of the driving shaft is inserted in an oil storage area, and the motor rotor is sleeved on the driving shaft and is fixedly matched with the driving shaft to rotate together; the oil pumping path extends along the driving shaft and can realize the drawing and conveying of lubricating oil from the oil storage area through centrifugal action by means of the rotation of the driving shaft. However, in practical application, when the working rotation speed of the variable frequency scroll compressor is low, the centrifugal oil suction structure of the vane cannot realize oil feeding.

Disclosure of Invention

Aiming at the problem that the prior art mentioned in the background art cannot realize oil feeding in a low-speed state, the invention provides a low-speed oil suction mechanism of a scroll compressor, which can continuously convey oil in the low-speed state without depending on centrifugal force, can realize oil feeding quantity change through speed change, and cannot generate fault phenomenon that oil cannot be fed in partial speed.

In order to achieve the above purpose, the present invention adopts the following technical scheme.

The low-rotation-speed oil absorption mechanism of the scroll compressor comprises an oil cylinder, wherein the oil cylinder comprises an oil inlet and an oil outlet, an oil cavity is arranged between the oil inlet and the oil outlet, an eccentric wheel assembly is movably connected in the oil cavity, an extrusion cavity is formed between one side, close to the oil outlet, of the eccentric wheel assembly and the oil cavity, and when the eccentric wheel assembly acts, the volume of the extrusion cavity changes. According to the oil feeding device, oil enters the oil cylinder from the oil inlet and then goes out from the oil outlet, the oil is transmitted to required parts, crankshafts are arranged in the compressors, oil in the oil cavity needs to be taken out from the oil inlet and conveyed to the oil outlet when the crankshafts rotate, therefore, eccentric wheel assemblies are arranged in the oil cavity and connected with the crankshafts in the compressors, the eccentric wheel assemblies rotate synchronously with the crankshafts, the shape and the volume of an extrusion cavity formed by the eccentric wheel assemblies and the oil cavity are constantly changed in the rotating process, oil in the extrusion cavity can be continuously pressed into the oil outlet, the change of the rotating speed only changes the speed of the change of the extrusion cavity as long as the crankshafts rotate, the oil feeding fault phenomenon is avoided, and the continuity of oil feeding is ensured.

Preferably, the eccentric wheel assembly comprises an eccentric rotating shaft, a piston is movably connected to the outside of the eccentric rotating shaft, and the piston is kept partially abutted against the side wall of the oil cylinder in the rotating process of the eccentric wheel assembly. The rotation of the eccentric rotating shaft drives the piston to eccentrically move in the oil cylinder, wherein in the rotating process of the eccentric wheel assembly, the piston always keeps abutting with the side wall of the oil cylinder, namely, a part of the piston always abuts on the side wall of the oil cylinder, the extrusion cavity is a cavity formed by the abutting area of the piston and the side wall of the oil cylinder and close to the oil outlet, the volume of the extrusion cavity changes to different degrees along with the continuous change of the piston abutting with the side wall of different areas of the oil cylinder, so that the oil can be pumped towards the oil outlet continuously, and the piston and the side wall of the oil cylinder always keep an abutting relation, so that the oil in the extrusion cavity does not flow back to the oil inlet, but only keeps a communicating state with the oil outlet until the piston abuts on the area of the oil cylinder corresponding to the oil outlet, the extrusion cavity is the smallest, and the extrusion cavity is the largest along with the continuous movement of the piston and the continuous change of the circumference of the extrusion cavity, so that the continuous oil is provided for the oil outlet.

Preferably, the rotation axis of the eccentric rotating shaft is concentric with the circle center of the oil cylinder. The rotating shaft center of the eccentric rotating shaft is arranged to be coaxial with the circle center of the oil cylinder, so that the piston can always keep abutting connection of the rain oil cylinder in the rotating process, and backflow phenomenon is avoided.

Preferably, the piston is provided with an oil hole, the piston further comprises an inner cavity, the eccentric rotating shaft is movably connected with the inner cavity, the oil hole is communicated with the inner cavity and the oil cavity, and the oil hole is arranged on one side close to the oil inlet. The piston is provided with the oil hole, oil entering from the oil inlet is filled in the oil cylinder, the piston comprises an inner cavity, the oil hole can be communicated with the oil cavity and the inner cavity, in the rotating process of the piston, oil in the oil cavity is continuously extruded, one part of the oil is conveyed out of the oil outlet, the other part of the oil can flow between the inner cavity and the oil cavity through the oil hole, so that the piston is continuously lubricated, the smoothness of the movement of the piston is ensured, friction loss between the piston and the oil cylinder is reduced, and the contact area between the bottom of the piston and the bottom of the oil cylinder is reduced due to the fact that the inner cavity is arranged, friction force and friction loss are further reduced.

Preferably, the eccentric wheel assembly or the oil cylinder is provided with an outer connecting wall plate, the oil cylinder or the eccentric wheel assembly is provided with a notch, and the outer connecting wall plate always keeps abutting with the notch when the eccentric wheel assembly rotates. The eccentric wheel assembly and the oil cylinder are provided with the outer connecting wall plate and the notch, wherein the outer connecting wall plate and the notch always keep an abutting relation, oil can not be reserved from the notch, meanwhile, as limiting constraint is formed between the outer connecting wall plate and the notch, in the rotating process of the eccentric rotating shaft, the piston is always in a translational state and cannot rotate, and as the eccentric rotating shaft and the abutting part of the oil cylinder to the piston also can form certain limiting constraint, the piston can stably perform eccentric motion even without any hard connecting part in the rotating process, the piston does not rotate but moves horizontally, only the crankshaft and the eccentric rotating shaft connected with the crankshaft always keep two parts to abut against the oil cylinder, the oil inlets are divided into an extrusion cavity and an oil inlet cavity close to the oil inlet by the abutting part, the extrusion cavity and the oil inlet cavity are mutually independent, the oil inlets between the two cavities cannot flow back to each other, stability and effectiveness of the transfusion are guaranteed, meanwhile, and the piston only performs eccentric motion in the rotating process, and the position of the oil hole always approaches to one side of the oil hole, so that the high-pressure environment of the oil is avoided in the extrusion cavity.

Preferably, the extrusion cavity comprises a high-pressure area, the high-pressure area is arranged on one side of the oil outlet along the rotation direction of the eccentric wheel assembly, and the oil cylinder is provided with a balance channel at a position corresponding to the high-pressure area. The extrusion chamber gradually increases with the continuous reduction of volume, and because the one end of extrusion chamber is through outer linking wall board and breach constitution, can form a confined volume here in the continuous motion process of piston, therefore when extrusion chamber butt on the oil-out, the oil-out is sealed, when eccentric wheel subassembly continued motion, because the butt position between piston and the hydro-cylinder is in oil-out along direction of rotation one side, therefore the fluid in the extrusion chamber can not be pressed into the oil-out, and the fluid has incompressibility, the high pressure region has just been formed here, therefore the hydro-cylinder is provided with the balance passageway in the corresponding position of high pressure region, the balance passageway can be the groove structure, also can be the passageway with the oil-out intercommunication, also can be the recess with the oil-out intercommunication, consequently when high pressure region is continuously extruded, fluid can move to the balance passageway in the pressure balance, prevent here oil pressure too big.

Preferably, the oil cylinder is connected with a partition plate, the partition plate comprises an oil drain port, the oil drain port is arranged opposite to the oil outlet, one side, far away from the oil cylinder, of the partition plate is connected with a bottom cover, an oil storage cavity is formed in the bottom cover, and a check valve plate is arranged between the oil drain port and the oil storage cavity. The oil cylinder is characterized in that a partition plate is arranged below the oil cylinder, a bottom cover is arranged below the partition plate, the bottom cover, the partition plate and the oil cylinder form an oil inlet and outlet channel, oil inlet channels are arranged on the bottom cover and the partition plate, the oil inlet channels are communicated with an oil inlet of the oil cylinder, wherein the bottom cover is provided with an oil storage cavity, the volume of the oil storage cavity is large, the back of the oil storage cavity is communicated with an oil outlet channel for conveying oil to each component, the oil in the oil storage cavity is from the oil conveyed by an oil outlet in the oil cylinder, the partition plate between the oil cylinder and the bottom cover can be matched with the oil cylinder and the bottom cover to form an oil cavity and an oil storage cavity, otherwise the oil cavity and the oil storage cavity are directly communicated, a check valve plate is arranged between the partition plate and the bottom cover, so that the oil in the oil storage cavity can be prevented from flowing back into an oil drain port or even the oil cavity in the partition plate, and the conveying stability of the oil can be ensured.

Preferably, the check valve plate comprises an opening part and a fixing part, the fixing part is fixedly connected with the partition plate or the bottom cover, and the opening part is attached to the oil drain port. The check valve plate comprises an opening part and a fixing part, wherein the opening part is arranged at the oil drain opening, the fixing part is fixedly arranged, so that when oil in the oil drain opening is extruded, the check valve plate can be impacted, the opening part is separated from the oil drain opening, more space is reserved below the opening part due to the fact that the opening part is attached to the oil drain opening, and then the movement space of the opening part can be ensured, when oil in the oil storage cavity wants to flow back, the check valve plate can be impacted upwards, and the check valve plate can keep the oil drain opening closed all the time due to the fact that the fit state of the check valve plate and the oil drain opening is kept, and therefore backflow limiting effects are achieved.

Preferably, the oil storage cavity is provided with a limiting plate, and the limiting plate is arranged right opposite to the opening part. Set up the limiting plate on the oil storage chamber, the limiting plate just sets up to the opening to can make the opening can not produce too big opening at opening in-process, by limiting plate restriction stroke, thereby improved the reliability of check valve block, avoid the opening too big lead to with the fluid emergence backward flow.

Preferably, the eccentric wheel assembly is provided with an oil outlet channel, the partition plate is provided with a communication port, and the communication port is communicated with the oil storage cavity and the oil outlet channel. Be provided with the oil channel on eccentric wheel subassembly, wherein the oil channel communicates with the transmission channel of each part that needs lubricated in the compressor, the oil channel is the final delivery outlet as this application oil absorption mechanism promptly, this application sets up transmission channel on the bent axle, with oil channel intercommunication, transmission channel on the bent axle can carry the fluid to each friction pair on, and the fluid in the oil channel comes from depositing the oil pocket in this application, it sets up on the end cover to deposit the oil pocket, still be provided with the baffle between end cover and the eccentric wheel subassembly, therefore be provided with the intercommunication mouth on the baffle, will deposit the oil pocket and communicate with the oil channel, realize the link up of whole oil circuit, wherein oil channel sets up in eccentric pivot, also be provided with the oilhole in eccentric pivot, oilhole and oil channel intercommunication, thereby the oil circuit has been formed, guarantee the lubrication effect of eccentric pivot.

The beneficial effects of the invention are as follows:

(1) The eccentric wheel assembly moves in the oil cavity, so that the volume of the extrusion cavity is continuously changed, continuous oil feeding in a low-speed state is realized, the stability of oil feeding is ensured, and the oil feeding rate can be controlled through the rotating speed of the crankshaft;

(2) The piston is always abutted with the oil cylinder in the rotation process of the eccentric rotating shaft, and meanwhile, the extrusion cavity is separated from the oil inlet cavity through the abutting joint between the outer connecting wall plate and the notch, so that the oil in the extrusion cavity is prevented from flowing back, and the oil in the extrusion cavity can be conveyed out through the oil outlet;

(3) The oil hole is arranged at one side close to the oil inlet and is matched with the translational piston, so that the position of the oil hole is kept basically stable, and the oil is prevented from being extruded into the oil hole in a large amount on the basis of ensuring that a lubricating effect can be obtained;

(4) The balance channel is arranged at the position of the oil cylinder corresponding to the high-pressure area, so that the situation that the oil pressure rises rapidly can be avoided, and the oil in the high-pressure area is prevented from being excessively extruded through the balance channel;

(5) Through setting up the check valve piece, avoid depositing the fluid backward flow in the oil pocket to cooperate to deposit the oil pocket and communicate mouth and oil outlet channel intercommunication, realize the integrality of whole oil circuit, guarantee that fluid can carry smoothly to each friction pair in.

Drawings

Fig. 1 is an exploded view of the present invention.

Fig. 2 is a schematic structural view of the present invention.

Fig. 3 is an isometric view of the eccentric shaft of fig. 1.

Fig. 4 is an isometric view of the piston and cylinder of fig. 1.

Fig. 5 is a bottom view of the piston and ram of fig. 1.

Fig. 6 is a top view of the piston and ram of fig. 1.

Fig. 7 is a partial enlarged view at a in fig. 6.

Fig. 8 is an isometric view of the baffle of fig. 1 in a first state.

Fig. 9 is an isometric view of the separator of fig. 1 in a second state.

Fig. 10 is an isometric view of the bottom cover of fig. 1.

Fig. 11 is a top view of the present invention.

Fig. 12 is a cross-sectional view at A-A in fig. 11.

Fig. 13 is a cross-sectional view at B-B in fig. 11.

In the figure:

1 an oil cylinder, 11 an oil inlet, 12 an oil outlet, 13 an oil cavity, 14 an extrusion cavity, 15 a notch, 16 a high-pressure area, 17 a balance channel, 18 a closed volume and 19 an oil inlet cavity;

2 eccentric wheel assembly, 21 eccentric rotating shaft, 22 piston, 23 oil hole, 24 inner cavity, 25 outer connecting wall plate, 26 oil outlet channel;

3 partition plates, 31 oil drain ports, 32 communication ports and 304 oil inlet channels;

4, a bottom cover, 41 oil storage cavities and 42 limiting plates;

5 check valve plate, 51 opening, 52 fixing part;

6 crankshafts.

Detailed Description

The invention is further described below with reference to the drawings and specific embodiments.

Example 1:

as shown in fig. 1, 2 and 4, a low-rotation-speed oil absorption mechanism of a scroll compressor comprises an oil cylinder 1, wherein the oil cylinder 1 comprises an oil inlet 11 and an oil outlet 12, an oil cavity 13 is arranged between the oil inlet 11 and the oil outlet 12, an eccentric wheel assembly 2 is movably connected in the oil cavity 13, an extrusion cavity 14 is formed between one side of the eccentric wheel assembly 2 close to the oil outlet 12 and the oil cavity 13, when the eccentric wheel assembly 2 acts, the volume of the extrusion cavity 14 changes, the eccentric wheel assembly 2 comprises an eccentric rotating shaft 21, a piston 22 is movably connected outside the eccentric rotating shaft 21, the piston 22 is kept to be partially abutted with the side wall of the oil cylinder 1 in the rotating process of the eccentric wheel assembly 2, the rotating shaft 21 is concentrically arranged with the center of the oil cylinder 1, the eccentric rotating shaft 21 is sleeved in the piston 22, but the eccentric rotating shaft 21 is incompletely contacted with the piston 22, namely, the eccentric protruding part of the eccentric rotating shaft 21 is abutted against the piston 22, and the piston 22 is abutted against the outer oil cylinder 1.

In the embodiment, oil enters the oil cylinder 1 from the oil inlet 11 and then goes out from the oil outlet 12 to be transmitted to needed parts, the compressor is provided with the crankshaft 6, oil in the oil cavity 13 needs to be taken out from the oil inlet 11 and conveyed to the oil outlet 12 when the crankshaft 6 rotates, the eccentric wheel assembly 2 is arranged in the oil cavity 13, the eccentric wheel assembly 2 is connected with the crankshaft 6 in the compressor and synchronously rotates with the crankshaft 6, the shape and volume of the extrusion cavity 14 formed by the eccentric wheel assembly 2 and the oil cavity 13 are continuously changed in the rotating process, so that the oil in the extrusion cavity 14 can be continuously pressed into the oil outlet 12, even in a low-speed state, the rotation of the crankshaft 6 can drive the extrusion cavity 14 to change, the change of the rotation speed only changes the speed of the volume of the extrusion cavity 14, thereby affecting the oil supply speed, the oil supply fault phenomenon can not occur, the continuity of oil supply is ensured, the rotation of the eccentric rotating shaft 21 drives the piston 22 to eccentrically move in the oil cylinder 1, wherein during the rotation of the eccentric wheel assembly 2, the piston 22 always keeps abutting with the side wall of the oil cylinder 1, namely, part of the piston 22 always abuts against the side wall of the oil cylinder 1, the extrusion cavity 14 is a cavity formed by the abutting region of the piston 22 and the side wall of the oil cylinder 1 near the oil outlet 12, the volume of the extrusion cavity 14 is changed to different degrees along with the continuous change of the piston 22 and the abutting of the side wall of the different region of the oil cylinder 1, so that the oil can be pumped towards the oil outlet 12 continuously, and the oil in the extrusion cavity 14 can not flow back into the oil inlet 11 because the abutting relationship between the piston 22 and the side wall of the oil cylinder 1 is always kept, but only the communication state with the oil outlet 12 is kept, until the piston 22 is abutted against the area of the oil cylinder 1 corresponding to the oil outlet 12, the extrusion cavity 14 is minimum, and when the piston 22 is abutted against the area of the oil cylinder 1 corresponding to the oil inlet 11, the extrusion cavity 14 is maximum, and the extrusion cavity 14 changes repeatedly along with the continuous movement of the piston 22, so that continuous oil is provided for the oil outlet 12, and the piston 22 can always keep the abutting joint of the rain oil cylinder 1 in the rotation process to avoid the backflow phenomenon by setting the rotation axis of the eccentric rotating shaft 21 to be coaxial with the circle center of the oil cylinder 1.

As shown in fig. 3, 4, 5 and 6, the piston 22 is provided with an oil hole 23, the piston 22 further includes an inner cavity 24, the eccentric rotating shaft 21 is movably connected with the inner cavity 24, the oil hole 23 communicates with the inner cavity 24 and the oil cavity 13, the oil hole 23 is disposed on a side close to the oil inlet 11, in this embodiment, the eccentric rotating shaft 21 is also provided with the oil hole 23, except that the oil hole 23 disposed on the eccentric rotating shaft 21 communicates with an oil outlet channel mentioned below.

The piston 22 is provided with the oil hole 23, the oil entering from the oil inlet 11 is filled in the oil cylinder 1, the piston 22 comprises the inner cavity 24, the oil hole 23 can be communicated with the oil cavity 13 and the inner cavity 24, in the rotation process of the piston 22, the oil in the oil cavity 13 is continuously extruded, one part of the oil is conveyed out of the oil outlet 12, the other part of the oil can flow between the inner cavity 24 and the oil cavity 13 through the oil hole 23, so that the piston 22 is continuously lubricated, the smoothness of the movement of the piston 22 is ensured, the friction loss between the piston 22 and the oil cylinder 1 is reduced, and the contact area between the bottom of the piston 22 and the bottom of the oil cylinder 1 is reduced due to the fact that the inner cavity 24 is arranged, friction force and friction loss are further reduced.

As shown in fig. 3, in this embodiment, an outer connecting plate 25 is disposed on the eccentric wheel assembly 2, a notch 15 is disposed on the oil cylinder 1, and when the eccentric wheel assembly 2 rotates, the outer connecting plate 25 always keeps abutting with the notch 15.

The eccentric wheel assembly 2 and the oil cylinder 1 are provided with the outer connecting wall plate 25 and the notch 15, wherein the outer connecting wall plate 25 and the notch 15 always keep an abutting relationship, oil can not be reserved from the notch 15, and meanwhile, the piston 22 always keeps two abutting positions with the oil cylinder 1 due to the fact that limiting constraint is formed between the outer connecting wall plate 25 and the notch 15, in the rotating process of the eccentric rotating shaft 21, the piston 22 is always in a translational state, no rotation is generated, and due to the fact that the eccentric rotating shaft 21 and the oil cylinder 1 also form certain limiting constraint on the abutting position of the piston 22, limiting constraint between the outer connecting wall plate 25 and the notch 15 is matched, the piston 22 can stably perform eccentric motion even without any hard connecting position in the rotating process, only the crankshaft 6 rotates and the eccentric rotating shaft 21 connected with the crankshaft 6, the piston 22 always keeps two abutting positions with the oil cylinder 1, the two abutting positions divide the oil cavity 13 into the extrusion cavity 14 and the oil inlet cavity 19 close to the oil inlet 11, the extrusion cavity 14 and the oil inlet cavity 19 are mutually independent, the two cavities are not guaranteed to be mutually pressed into the oil hole 23, and the mutual stability of the oil is always high, and the oil is always pressed into the oil inlet 23 is avoided due to the fact that the mutual stability is always being pressed into one side of the oil hole 23.

As shown in fig. 5, 6 and 7, the extrusion chamber 14 comprises a high-pressure area 16, the high-pressure area 16 is arranged at one side of the oil outlet 12 along the rotation direction of the eccentric wheel assembly 2, and the oil cylinder 1 is provided with a balance channel 17 at a position corresponding to the high-pressure area 16.

The pressure of the extrusion chamber 14 gradually increases along with the continuous decrease of the volume, and because one end of the extrusion chamber 14 is formed by the outer connecting wall plate 25 and the notch 15, a closed volume 18 is formed at the position in the continuous movement process of the piston 22, therefore, when the extrusion chamber 14 is abutted against the oil outlet 12, the oil outlet 12 is sealed, when the eccentric wheel assembly 2 continues to move, because the abutting position between the piston 22 and the oil cylinder 1 is on one side of the oil outlet 12 along the rotating direction, oil in the extrusion chamber 14 is not pressed into the oil outlet 12, the oil has incompressibility, a high pressure area 16 is formed at the position, corresponding to the high pressure area 16, of the oil cylinder 1 is provided with a balance channel 17, the balance channel 17 can be a groove structure, a channel communicated with the oil outlet 12 can also be a groove communicated with the oil outlet 12, and therefore, when the high pressure area 16 is continuously extruded, the oil can move into the balance channel 17 to perform pressure balance, and the oil pressure is prevented from being excessively large, and the balance channel 17 is a groove structure arranged on the edge of the oil cylinder far from the other side.

As shown in fig. 1, 8, 9 and 10, the oil cylinder 1 is connected with a partition plate 3, the partition plate 3 comprises an oil drain port 31, the oil drain port 31 is arranged opposite to the oil outlet 12, one side, far away from the oil cylinder 1, of the partition plate 3 is connected with a bottom cover 4, an oil storage cavity 41 is arranged on the bottom cover 4, a check valve plate 5 is arranged between the oil drain port 31 and the oil storage cavity 41, the check valve plate 5 comprises an opening 51 and a fixing portion 52, the fixing portion 52 is fixedly connected with the partition plate 3 or the bottom cover 4, the opening 51 is attached to the oil drain port 31, a limiting plate 42 is arranged on the oil storage cavity 41, and the limiting plate 42 is arranged opposite to the opening 51.

A baffle plate 3 is arranged below the oil cylinder 1, a bottom cover 4 is arranged below the baffle plate 3, the bottom cover 4, the baffle plate 3 and the oil cylinder 1 form an oil inlet and outlet channel 26, an oil inlet channel 304 is arranged on the bottom cover 4 and the baffle plate 3, the oil inlet channel 304 is communicated with an oil inlet 11 of the oil cylinder 1, wherein a storage cavity 41 is arranged on the bottom cover 4, the volume of the storage cavity 41 is larger, an oil outlet channel 26 for conveying oil to each component is communicated behind the storage cavity 41, the oil in the storage cavity 41 comes from the oil conveyed by an oil outlet 12 in the oil cylinder 1, the baffle plate 3 between the oil cylinder 1 and the bottom cover 4 can be matched with the oil cylinder 1 and the bottom cover 4 to form an oil cavity 13 and a storage cavity 41, otherwise, the oil cavity 13 and the storage cavity 41 can be directly communicated, a check valve plate 5 is arranged between the baffle plate 3 and the bottom cover 4, the oil in the storage cavity 41 can be prevented from flowing back to an oil discharge port 31 or even an oil cavity 13 in the baffle plate 3, the check valve plate 5 comprises an opening part 51 and a fixing part 52, wherein the opening part 51 is arranged at the oil drain port 31, and the fixing part 52 is fixedly arranged, so that when the oil in the oil drain port 31 is extruded, the opening part 51 is separated from the oil drain port 31, more space is reserved below the opening part 51 because the opening part 51 is arranged by being attached to the oil drain port 31, so that the movement space of the opening part 51 can be ensured, when the oil in the oil storage cavity 41 wants to flow back, the check valve plate 5 is impacted upwards, and the oil drain port 31 is always kept closed because the attaching state of the check valve plate 5 and the oil drain port 31 is kept, the backflow limiting effect is limited, a limiting plate 42 is arranged on the oil storage cavity 41, and the limiting plate 42 is arranged right opposite to the opening part 51, therefore, the opening part 51 can not generate an oversized opening in the opening process, and the stroke is limited by the limiting plate 42, so that the reliability of the check valve plate 5 is improved, and backflow with oil liquid caused by oversized opening is avoided.

As shown in fig. 1, 2, 3, 8, 10 and 12, the eccentric wheel assembly 2 is provided with an oil outlet channel 26, the partition plate 3 is provided with a communication port 32, and the communication port 32 communicates with the oil storage cavity 41 and the oil outlet channel 26.

The oil outlet channel 26 is arranged on the eccentric wheel assembly 2, wherein the oil outlet channel 26 is communicated with the transmission channels of all parts which need to be lubricated in the compressor, namely, the oil outlet channel 26 is used as a final output port of the oil suction mechanism, in the embodiment, the transmission channels are arranged on the crankshaft 6 and are communicated with the oil outlet channel 26, the transmission channels on the crankshaft 6 can convey oil to all friction pairs, the oil in the oil outlet channel 26 comes from the oil storage cavity 41, the oil storage cavity 41 is arranged on the bottom cover 4, the partition plate 3 is further arranged between the bottom cover 4 and the eccentric wheel assembly 2, the communication port 32 is arranged on the partition plate 3, the oil storage cavity 41 is communicated with the oil outlet channel 26, the whole oil way is communicated, the oil outlet channel 26 is arranged on the eccentric rotating shaft 21, the oil holes 23 are also arranged on the eccentric rotating shaft 21 and are communicated with the oil outlet channel 26, so that the oil way is formed, and the lubricating effect of the eccentric rotating shaft 21 is ensured.

As shown in fig. 11, 12 and 13, the assembly and operation process of the low rotation speed oil absorption mechanism of the scroll compressor in this embodiment are as follows: in the embodiment, the eccentric wheel assembly 2 comprises an eccentric rotating shaft 21, the upper end of the eccentric rotating shaft 21 is connected with a crankshaft 6, an oil outlet channel 26 is arranged in the eccentric rotating shaft 21, a piston 22 is movably connected to the outside of the eccentric rotating shaft 21, an outer connecting wall plate 25 is arranged on the piston 22, the piston 22 is arranged in an oil cavity 13, a notch 15 is arranged on an oil cylinder 1, the outer connecting wall plate 25 is in clamping connection with the notch 15 and can move relatively, in the moving process, the outer connecting wall plate is always kept in a abutting state with the notch 15, a partition plate 3 is arranged below the oil cylinder 1, a bottom cover 4 is arranged below the partition plate 3, an oil inlet channel 304 communicated with an oil inlet 11 is arranged on the partition plate 3 and the bottom cover 4, an oil outlet 31 communicated with the oil outlet 12 is arranged on the partition plate 3, an oil storage cavity 41 communicated with the oil outlet 31 is arranged on the bottom cover 4, a check valve plate 5 is connected below the partition plate 3, the fixed part 52 of the check valve plate 5 is fixedly connected with the baffle plate 3 through bolts, the opening part 51 is opposite to the oil drain port 31, the baffle plate 3 is provided with a communication port 32, the oil storage cavity 41 is communicated with the oil outlet channel 26, in the working process, oil sequentially passes through the bottom cover 4 and the baffle plate 3 through the oil inlet channel 304 and then enters the oil inlet 11, the crankshaft 6 rotates to drive the eccentric rotating shaft 21 to rotate, the eccentric rotating shaft 21 rotates to drive the piston 22 to translate in the oil cylinder 1, the piston 22 is limited by the outer connecting wall plate 25 and the notch 15, in the translation process of the piston 22, the abutting state of the side wall of the rain oil cylinder 1 is always kept, two abutting points exist between the oil cylinder 1 and the piston 22, therefore, the oil storage cavity 13 can be divided into an extrusion cavity 14 and an oil inlet cavity 19, the volume of the extrusion cavity 14 is continuously changed along with the continuous rotation of the eccentric rotating shaft 21, the oil is pumped into the oil outlet 12, the oil outlet 12 is communicated with the oil drain port 31, oil is flushed out of the check valve plate 5 to enter the oil storage cavity 41 under the pressure change of the extrusion cavity 14, and due to the effect of the check valve plate 5, the oil in the oil storage cavity 41 can only enter the oil outlet channel 26 through the communication port 32 and cannot flow back from the oil drain port 31, so that the oil enters the crankshaft 6 through the oil outlet channel 26 and is conveyed to each friction pair to achieve a lubricating effect.

Claims (10)

1. The utility model provides a scroll compressor low rotation speed oil absorption mechanism, its characterized in that, including hydro-cylinder (1), hydro-cylinder (1) is including oil inlet (11) and oil-out (12), be provided with oil pocket (13) between oil inlet (11) and oil-out (12), swing joint has eccentric wheel subassembly (2) in oil pocket (13), eccentric wheel subassembly (2) are close to and are formed with extrusion chamber (14) between oil-out (12) one side and oil pocket (13), when eccentric wheel subassembly (2) action, extrusion chamber (14) volume change.

2. A low rotation speed oil absorbing mechanism for a scroll compressor according to claim 1, wherein the eccentric wheel assembly (2) comprises an eccentric rotating shaft (21), a piston (22) is movably connected to the outside of the eccentric rotating shaft (21), and the piston (22) is kept partially abutted against the side wall of the oil cylinder (1) during the rotation of the eccentric wheel assembly (2).

3. The low-rotation-speed oil absorption mechanism of the scroll compressor according to claim 2, wherein the rotation axis of the eccentric rotating shaft (21) is arranged concentrically with the center of the cylinder (1).

4. The low-rotation-speed oil absorption mechanism of the scroll compressor according to claim 2, wherein the piston (22) is provided with an oil hole (23), the piston (22) further comprises an inner cavity (24), the eccentric rotating shaft (21) is movably connected with the inner cavity (24), the oil hole (23) is communicated with the inner cavity (24) and the oil cavity (13), and the oil hole (23) is arranged on one side close to the oil inlet (11).

5. A low rotation speed oil absorption mechanism for a scroll compressor according to claim 1, wherein an outer connecting plate (25) is arranged on the eccentric wheel assembly (2) or the oil cylinder (1), a notch (15) is arranged on the oil cylinder (1) or the eccentric wheel assembly (2), and the outer connecting plate (25) always keeps abutting with the notch (15) when the eccentric wheel assembly (2) rotates.

6. A low rotation speed oil absorbing mechanism for a scroll compressor according to claim 1, wherein the extrusion chamber (14) comprises a high pressure area (16), the high pressure area (16) is arranged at one side of the oil outlet (12) along the rotation direction of the eccentric wheel assembly (2), and the oil cylinder (1) is provided with a balance channel (17) at a position corresponding to the high pressure area (16).

7. The low-rotation-speed oil absorption mechanism of a scroll compressor according to any one of claims 1 to 6, wherein the oil cylinder (1) is connected with a partition plate (3), the partition plate (3) comprises an oil drain port (31), the oil drain port (31) is opposite to the oil outlet (12), one side, far away from the oil cylinder (1), of the partition plate (3) is connected with a bottom cover (4), the bottom cover (4) is provided with an oil storage cavity (41), and a check valve plate (5) is arranged between the oil drain port (31) and the oil storage cavity (41).

8. The low-rotation-speed oil absorption mechanism of the scroll compressor according to claim 7, wherein the check valve plate (5) comprises an opening part (51) and a fixing part (52), the fixing part (52) is fixedly connected with the partition plate (3) or the bottom cover (4), and the opening part (51) is attached to the oil drain port (31).

9. The low-rotation-speed oil absorption mechanism of a scroll compressor according to claim 8, wherein a limiting plate (42) is provided on the oil storage chamber (41), and the limiting plate (42) is provided opposite to the opening (51).

10. The low-rotation-speed oil absorption mechanism of the scroll compressor according to claim 7, wherein an oil outlet channel (26) is arranged on the eccentric wheel assembly (2), a communication port (32) is arranged on the partition plate (3), and the communication port (32) is communicated with the oil storage cavity (41) and the oil outlet channel (26).