Rotary compressor

Abstract

The application provides a rotor compressor capable of adjusting the oil pumping amount according to the rotational speed. The rotor compressor comprises an oil storage mechanism, which comprises an oil storage shell, an inner cavity of the oil storage shell being communicated with a central passage of a crankshaft, and a preset opening being arranged in a bottom of the oil storage shell and communicated with the inner cavity of the oil storage shell; and a valve plate, the valve plate being arranged in the bottom of the oil storage shell, a first end of the valve plate being fixedly connected with an outer wall of the oil storage shell, and a second end of the valve plate being shielded at the preset opening; when the rotational speed of the rotor compressor is greater than or equal to a first rotational speed, the oil in the central passage of the crankshaft enters the oil storage shell, and when the oil in the oil storage shell reaches a preset amount, the oil in the oil storage shell pushes the second end of the valve plate, so that the second end of the valve plate is away from the preset opening, and the oil in the oil storage shell flows out through the preset opening; when the rotational speed of the rotor compressor is less than or equal to a second rotational speed, at least part of the oil in the oil storage shell flows into the central passage of the crankshaft; and the first rotational speed is greater than the second rotational speed.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more specifically, to a rotary compressor. Background Technology

[0002] Traditional variable frequency compressors typically employ a fixed structure design for their crankshaft oil pumping devices, which cannot automatically adjust the oil pumping volume according to changes in compressor speed.

[0003] Under high-speed operating conditions, due to the increased centrifugal force, the crankshaft oil pump will discharge too much refrigerant oil, resulting in excess oil, increased frictional resistance and energy consumption, and may also cause oil foaming, reducing lubrication effect.

[0004] At low speeds, insufficient oil supply leads to poor lubrication of critical components such as the crankshaft and bearings, exacerbating wear, shortening compressor life, and affecting overall operating efficiency. Summary of the Invention

[0005] The main objective of this invention is to provide a rotary compressor to solve the problem in the prior art that the oil pump volume cannot be automatically adjusted according to changes in compressor speed.

[0006] To achieve the above objectives, the present invention provides a rotary compressor, which includes an oil storage mechanism. The oil storage mechanism includes: an oil storage shell, wherein the crankshaft of the rotary compressor is rotatably disposed relative to the oil storage shell, the inner cavity of the oil storage shell is connected to the central channel of the crankshaft, and a preset opening is provided at the bottom of the oil storage shell communicating with its inner cavity; and a valve plate, having a first end and a second end disposed opposite to each other, the valve plate being located at the bottom of the oil storage shell, the first end of the valve plate being fixedly connected to the outer wall of the oil storage shell, and the second end of the valve plate blocking the preset opening. When the rotational speed of the rotary compressor is greater than or equal to a first rotational speed, oil in the central channel of the crankshaft enters the oil storage shell, and when the oil in the oil storage shell reaches a preset amount, the oil in the oil storage shell pushes the second end of the valve plate away from the preset opening, so that the oil in the oil storage shell flows out through the preset opening. When the rotational speed of the rotary compressor is less than or equal to a second rotational speed, at least a portion of the oil in the oil storage shell flows into the central channel of the crankshaft. The first rotational speed is greater than the second rotational speed.

[0007] Furthermore, the side of the oil reservoir has a side opening that communicates with the central channel of the crankshaft.

[0008] Furthermore, the oil storage mechanism is located above the cylinder of the rotary compressor.

[0009] Furthermore, a connecting channel is provided on the crankshaft, with the first end of the connecting channel connected to the central channel of the crankshaft and the second end of the connecting channel connected to the inner cavity of the oil reservoir.

[0010] Furthermore, the upper flange of the rotary compressor is provided with a mounting hole, and part of the oil reservoir passes through the mounting hole so that the inner cavity of the oil reservoir is connected to the second end of the connecting channel.

[0011] Furthermore, the oil storage mechanism includes: a baffle having a first end and a second end disposed opposite to each other, the baffle being located at the bottom of the oil storage shell, the first end of the baffle being connected and fixed to the outer wall of the oil storage shell; the second end of the baffle being located below the second end of the valve plate; and an axial distance between the second end of the baffle and the second end of the valve plate blocking the preset opening, so as to limit the maximum stroke of the second end of the valve plate away from the preset opening.

[0012] Furthermore, the bottom of the oil reservoir has multiple preset openings; the second end of the valve plate is blocked at the multiple preset openings; or, there are multiple valve plates, and the second ends of the multiple valve plates are blocked at the multiple preset openings in a corresponding manner.

[0013] Furthermore, the rotary compressor includes an oil guide plate, the top end of which extends into the central channel of the crankshaft, and the bottom end of which extends into the bottom oil sump of the rotary compressor, so that the oil in the bottom oil sump is guided into the central channel of the crankshaft through the oil guide plate.

[0014] Furthermore, the oil guide plate is a sheet-like structure twisted at a predetermined angle at at least one intermediate position; and / or, the top and bottom ends of the oil guide plate are provided with bifurcated openings.

[0015] Furthermore, the displacement of the rotary compressor is 1 to 3 times the volume of the inner cavity of the oil reservoir.

[0016] According to the technical solution of this invention, a rotary compressor includes an oil storage mechanism, which includes an oil storage shell and a valve plate. The crankshaft of the rotary compressor is rotatably disposed relative to the oil storage shell. The inner cavity of the oil storage shell communicates with the central channel of the crankshaft of the rotary compressor. A preset opening communicating with the inner cavity is provided at the bottom of the oil storage shell. The valve plate has a first end and a second end disposed opposite to each other. The valve plate is located at the bottom of the oil storage shell. The first end of the valve plate is connected and fixed to the outer wall of the oil storage shell, and the second end of the valve plate is blocked at the preset opening.

[0017] When the rotational speed of the rotary compressor is greater than or equal to the first rotational speed, the rotary compressor operates at high speed, and the oil in the central channel of the crankshaft enters the oil reservoir. When the oil in the oil reservoir does not reach the preset amount, the oil that has entered the oil reservoir is stored in the oil reservoir. When the oil in the oil reservoir reaches the preset amount, the oil in the oil reservoir pushes the second end of the valve plate, so that the second end of the valve plate moves away from the preset opening, so that the oil in the oil reservoir flows out through the preset opening and is discharged into the cavity of the rotary compressor housing.

[0018] Specifically, since the crankshaft of the rotary compressor is rotatably positioned relative to the oil reservoir, meaning the oil reservoir does not rotate with the crankshaft, the oil reservoir mechanism does not rotate with the crankshaft. When the crankshaft rotates, the oil inside the crankshaft generates centrifugal force, so the oil entering the oil reservoir from the central channel of the crankshaft has a certain centrifugal force; the combined effect of the gravity and centrifugal force of the oil entering the oil reservoir causes the second end of the valve plate to move away from the preset opening.

[0019] When the rotational compressor speed is less than or equal to the second speed, the rotational compressor operates at low speed, and at least part of the oil in the oil reservoir flows into the central channel of the crankshaft. At this time, the valve plate is in the closed state, and the preset opening is in the closed state; the first speed is greater than the second speed.

[0020] By setting up an oil storage mechanism, excess refrigeration oil is discharged or a certain amount of refrigeration oil is stored during high-speed operation; during low-speed operation, the refrigeration oil in the oil storage tank flows back to the central channel of the crankshaft to achieve refrigeration oil compensation. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0022] Figure 1 A schematic diagram of the rotary compressor according to the present invention is shown;

[0023] Figure 2 It shows Figure 1 Enlarged view of the oil storage mechanism, upper flange, and crankshaft mating parts of the rotary compressor;

[0024] Figure 3 A schematic diagram of the oil storage mechanism according to the present invention is shown;

[0025] Figure 4 A schematic diagram of the structure of the oil guide plate according to the present invention is shown.

[0026] The above figures include the following reference numerals:

[0027] 1. Housing; 2. Motor;

[0028] 3. Crankshaft; 31. Connecting channel;

[0029] 4. Oil storage mechanism; 41. Oil storage shell; 411. Pre-set opening; 412. Side opening; 413. First shell section; 414. Second shell section; 42. Valve plate; 43. Baffle; 44. Rivet;

[0030] 6. Oil guide plate; 61. Forked opening;

[0031] 7. Upper flange; 71. Mounting hole. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0034] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] This invention provides a rotary compressor, please refer to... Figures 1 to 4 The rotary compressor includes an oil storage mechanism, which comprises an oil storage shell 41 and a valve plate 42. The crankshaft of the rotary compressor is rotatably mounted relative to the oil storage shell 41. The inner cavity of the oil storage shell 41 communicates with the central channel of the crankshaft of the rotary compressor. A pre-set opening 411 communicating with the inner cavity is provided at the bottom of the oil storage shell 41. The valve plate 42 has a first end and a second end that are disposed opposite to each other. The valve plate 42 is located at the bottom of the oil storage shell 41. The first end of the valve plate 42 is connected and fixed to the outer wall of the oil storage shell 41, and the second end of the valve plate 42 is blocked at the pre-set opening 411.

[0036] When the rotational speed of the rotary compressor is greater than or equal to the first rotational speed, the rotary compressor operates at high speed, and the oil in the central channel of the crankshaft enters the oil reservoir 41. When the oil in the oil reservoir 41 does not reach the preset amount, the oil that enters the oil reservoir 41 is stored in the oil reservoir 41. When the oil in the oil reservoir 41 reaches the preset amount, the oil in the oil reservoir 41 pushes the second end of the valve plate 42, so that the second end of the valve plate 42 moves away from the preset opening 411, so that the oil in the oil reservoir 41 flows out through the preset opening 411, and the oil flowing out from the preset opening 411 is discharged into the cavity of the rotary compressor housing.

[0037] Specifically, since the crankshaft of the rotary compressor is rotatably arranged relative to the oil reservoir 41, the oil reservoir 41 does not rotate with the crankshaft, meaning the oil storage mechanism does not rotate with the crankshaft. When the crankshaft rotates, the oil inside the crankshaft generates centrifugal force, so the oil entering the oil reservoir 41 from the central channel of the crankshaft has a certain centrifugal force; the combined effect of gravity and centrifugal force of the oil entering the oil reservoir 41 causes the second end of the valve plate 42 to move away from the preset opening 411.

[0038] When the rotational speed of the rotary compressor is less than or equal to the second rotational speed, the rotary compressor operates at low speed, and at least part of the oil in the oil reservoir 41 flows into the central channel of the crankshaft. At this time, the valve plate 42 is in a closed state, and the preset opening 411 is in a closed state; the first rotational speed is greater than the second rotational speed.

[0039] By setting up an oil storage mechanism, excess refrigeration oil is discharged or a certain amount of refrigeration oil is stored when the engine is running at high speed; when the engine is running at low speed, the refrigeration oil in the oil storage tank 41 flows back to the central channel of the crankshaft to achieve refrigeration oil compensation.

[0040] In this application, the side of the oil reservoir 41 is provided with a side opening 412 that communicates with the central channel of the crankshaft, and the side opening 412 communicates with the inner cavity of the oil reservoir 41.

[0041] In this application, a connecting channel 31 is provided on the crankshaft. The first end of the connecting channel 31 is connected to the central channel of the crankshaft, and the second end of the connecting channel 31 is connected to the inner cavity of the oil reservoir 41.

[0042] Specifically, the second end of the connecting channel 31 is connected to the side opening 412.

[0043] Specifically, the second end of the connecting channel 31 extends to the outer peripheral surface of the crankshaft so that the second end of the connecting channel 31 communicates with the inner cavity of the oil reservoir 41.

[0044] In this application, the oil storage mechanism is located above the cylinder of the rotary compressor.

[0045] Specifically, the upper flange of the rotary compressor is fitted onto the crankshaft, and the crankshaft is rotatably mounted relative to the upper flange; the upper flange has a mounting hole 71; the first end of the mounting hole 71 extends to the wall of the central through hole of the upper flange, and the upper flange is fitted onto the crankshaft through its central through hole; the second end of the mounting hole 71 extends to the outer circumferential surface of the upper flange.

[0046] Specifically, a portion of the oil reservoir 41 is inserted into the mounting hole 71 so that the inner cavity of the oil reservoir 41 is connected to the second end of the connecting channel 31, and the oil reservoir 41 is connected and fixed to the upper flange.

[0047] Specifically, the second end of the connecting channel 31 extends to the outer peripheral surface of the crankshaft, and part of the oil reservoir 41 passes through the mounting hole 71 so that the side opening 412 communicates with the second end of the connecting channel 31.

[0048] Specifically, the oil storage shell 41 includes a first shell portion 413 and a second shell portion 414 connected to each other, the first shell portion 413 and the second shell portion 414 together forming the inner cavity of the oil storage shell 41; a pre-set opening 411 is provided on the second shell portion 414, and a side opening 412 is provided on the first shell portion 413; the first shell portion 413 passes through the mounting hole 71.

[0049] In this application, the oil storage mechanism includes a baffle 43, which has a first end and a second end disposed opposite to each other. The baffle 43 is located at the bottom of the oil storage shell 41, and the first end of the baffle 43 is connected and fixed to the outer wall of the oil storage shell 41. The second end of the baffle 43 is located below the second end of the valve plate 42. There is an axial gap between the second end of the baffle 43 and the second end of the valve plate 42, which is blocked at the preset opening 411, so as to limit the maximum stroke of the second end of the valve plate 42 away from the preset opening 411 by the second end of the baffle 43. This is beneficial to extending the service life of the valve plate 42. Here, the axial direction of the axial gap refers to the axial direction of the rotary compressor.

[0050] Specifically, when the second end of the valve plate 42 moves away from the preset opening 411, and when the second end of the valve plate 42 abuts against the second end of the baffle 43, the baffle 43 prevents the second end of the valve plate 42 from moving further away. Therefore, this is the maximum stroke of the second end of the valve plate 42 moving away from the preset opening 411.

[0051] In addition, the baffle 43 also has an oil blocking function, that is, part of the oil flowing out from the preset opening 411 flows along the baffle 43 and then flows into the cavity of the compressor housing; and part of the oil flowing out from the preset opening 411 falls on the baffle 43, which is also conducive to the formation of oil mist; furthermore, it is beneficial to reduce the impact of refrigerant oil being discharged into the air conditioning system on heat exchange efficiency.

[0052] Optionally, the first end of the baffle 43, the first end of the valve plate 42, and the oil reservoir 41 are connected and fixed by rivets 44.

[0053] Optionally, in this application, the bottom of the oil storage tank 41 is provided with a plurality of preset openings 411.

[0054] The first configuration of valve plate 42 and baffle 43 is as follows: there is only one valve plate 42 and one baffle 43, and the second end of the valve plate 42 is blocked at multiple preset openings 411.

[0055] The second arrangement of valve plate 42 and baffle 43 is as follows: there are multiple valve plates 42 and multiple baffles 43; the second ends of multiple valve plates 42 are correspondingly blocked at multiple preset openings 411; multiple baffles 43 are arranged correspondingly to multiple valve plates 42, that is, the second end of each baffle 43 is located below the second end of the corresponding valve plate 42, and there is an axial distance between the second end of each baffle 43 and the second end of the corresponding valve plate 42 blocked at the corresponding preset opening 411, so as to limit the maximum stroke of the second end of the corresponding valve plate 42 away from the corresponding preset opening 411 by the second end of each baffle 43.

[0056] In this application, the rotary compressor includes an oil guide plate 6, the top end of which extends into the central channel of the crankshaft, and the bottom end of which extends into the bottom oil sump of the rotary compressor, so that the oil in the bottom oil sump is guided into the central channel of the crankshaft through the oil guide plate 6.

[0057] Specifically, the top end of the oil guide plate 6 is fixedly connected to the crankshaft. When the crankshaft rotates, it drives the oil guide plate 6 to rotate, causing it to draw the refrigerant oil from the bottom oil sump upwards into the central channel inside the crankshaft, where it is then distributed to the various oil outlets to lubricate the friction pairs of the pump body. One end of each oil outlet is connected to the central channel of the crankshaft, allowing oil from the central channel to flow into each outlet. The oil flowing into each outlet is then discharged to the respective friction pairs through the other end of the outlet.

[0058] Specifically, the oil guide plate 6 is a strip-shaped sheet structure twisted at a predetermined angle at at least one intermediate position. For example... Figure 4 In the middle, the oil guide plate 6 is a strip-shaped sheet structure formed by twisting at a preset angle at its two middle positions.

[0059] Specifically, the oil guide plate 6 has bifurcated openings 61 at both its top and bottom ends. The bifurcated openings 61 allow the refrigeration oil to be evenly distributed onto the inner wall of the crankshaft, and the bifurcated openings 61 also help the oil to atomize and form a uniform oil film.

[0060] When the rotational speed of the rotary compressor is greater than or equal to the first rotational speed, the rotary compressor operates at high speed. The refrigerant oil in the bottom oil sump is drawn into the central channel inside the crankshaft through the oil guide plate 6, and is supplied upward along the central channel of the crankshaft to be discharged through each oil outlet. When the oil in the central channel of the crankshaft reaches the connecting channel 31, it enters the inner cavity of the oil storage shell 41 through the connecting channel 31. The valve plate 42 of the oil storage mechanism is normally closed, so the inner cavity of the oil storage shell 41 has the function of storing oil. The normally closed state of the valve plate 42 means that the second end of the valve plate 42 is blocked at the preset opening 411, and the preset opening 411 is closed. Figure 3The valve plate 42 is normally closed. When there is too much oil in the inner cavity of the oil reservoir 41, the valve plate 42 can be pushed open so that the second end of the valve plate 42 is away from the preset opening 411. Even if the preset opening 411 is opened, the oil in the oil reservoir 41 flows out through the preset opening 411. The refrigerant oil flowing out from the preset opening 411 is discharged into the cavity of the rotor compressor housing. At least part of the refrigerant oil will flow back into the bottom oil sump.

[0061] When the rotational speed of the rotary compressor is less than or equal to the second rotational speed, the rotary compressor operates at low speed. The amount of refrigerant oil drawn in by the oil guide plate 6 decreases due to the decrease in rotational speed. At least part of the refrigerant oil stored in the oil reservoir 41 flows into the central channel of the crankshaft to replenish and lubricate the various oil outlets of the crankshaft. At this time, the valve plate 42 is in the closed state, and the preset opening 411 is in the closed state.

[0062] After the speed of the rotary compressor decreases, the upward oil-drawing capacity of the oil guide plate 6 decreases, and the refrigerant oil remaining inside the crankshaft and in the oil reservoir 41 flows back under the action of gravity.

[0063] In this application, the rotary compressor includes a housing 1, a motor 2, a crankshaft 3, an upper flange 7, an upper cylinder, an intermediate partition plate, a lower cylinder, a lower flange, and an integrated liquid distributor.

[0064] In this application, since the oil storage mechanism is modularly designed, the volume of the inner cavity of the oil storage tank 41 can be determined according to the displacement of the rotary compressor.

[0065] Optionally, the displacement of the rotary compressor is 1 to 3 times the volume of the inner cavity of the oil reservoir 41.

[0066] Optionally, in this application, the rotary compressor is a variable frequency compressor.

[0067] Optionally, the rotary compressor is a twin-cylinder compressor.

[0068] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0069] In the rotary compressor provided by the present invention, the rotary compressor includes an oil storage mechanism, which includes an oil storage shell 41 and a valve plate 42. The crankshaft of the rotary compressor is rotatably disposed relative to the oil storage shell 41. The inner cavity of the oil storage shell 41 communicates with the central channel of the crankshaft of the rotary compressor. A preset opening 411 communicating with the inner cavity is provided at the bottom of the oil storage shell 41. The valve plate 42 has a first end and a second end disposed opposite to each other. The valve plate 42 is located at the bottom of the oil storage shell 41. The first end of the valve plate 42 is connected and fixed to the outer wall of the oil storage shell 41, and the second end of the valve plate 42 is blocked at the preset opening 411.

[0070] When the rotational speed of the rotary compressor is greater than or equal to the first rotational speed, the rotary compressor operates at high speed, and the oil in the central channel of the crankshaft enters the oil reservoir 41. When the oil in the oil reservoir 41 does not reach the preset amount, the oil that enters the oil reservoir 41 is stored in the oil reservoir 41. When the oil in the oil reservoir 41 reaches the preset amount, the oil in the oil reservoir 41 pushes the second end of the valve plate 42, so that the second end of the valve plate 42 moves away from the preset opening 411, so that the oil in the oil reservoir 41 flows out through the preset opening 411, and the oil flowing out from the preset opening 411 is discharged into the cavity of the rotary compressor housing.

[0071] Specifically, since the crankshaft of the rotary compressor is rotatably arranged relative to the oil reservoir 41, the oil reservoir 41 does not rotate with the crankshaft, meaning the oil storage mechanism does not rotate with the crankshaft. When the crankshaft rotates, the oil inside the crankshaft generates centrifugal force, so the oil entering the oil reservoir 41 from the central channel of the crankshaft has a certain centrifugal force; the combined effect of gravity and centrifugal force of the oil entering the oil reservoir 41 causes the second end of the valve plate 42 to move away from the preset opening 411.

[0072] When the rotational speed of the rotary compressor is less than or equal to the second rotational speed, the rotary compressor operates at low speed, and at least part of the oil in the oil reservoir 41 flows into the central channel of the crankshaft. At this time, the valve plate 42 is in a closed state, and the preset opening 411 is in a closed state; the first rotational speed is greater than the second rotational speed.

[0073] By setting up an oil storage mechanism, excess refrigeration oil is discharged or a certain amount of refrigeration oil is stored when the engine is running at high speed; when the engine is running at low speed, the refrigeration oil in the oil storage tank 41 flows back to the central channel of the crankshaft to achieve refrigeration oil compensation.

[0074] By setting up an oil storage mechanism 4, that is, adding an adjustment mechanism to the compressor pump body structure, the situation of too much or too little refrigeration oil is avoided, thereby improving the compressor oil pumping volume and making the compressor oil pumping volume more precise; by controlling the amount of refrigeration oil, it has a positive effect on controlling the amount of oil discharged from the compressor into the system.

[0075] The oil storage mechanism 4 of this application has a simple structure, timely response, and can achieve precise real-time adjustment, solving the problem of oil quantity matching under high and low speed conditions.

[0076] The rotary compressor of this application has an oil pumping function that adaptively adjusts the oil supply.

[0077] This application applies the oil storage mechanism 4 to the rotary compressor, which enables adaptive dynamic adjustment of the oil supply under both high and low speed conditions. This ensures the normal intake of refrigeration oil by the crankshaft while significantly reducing the amount of refrigeration oil discharged from the end of the crankshaft, keeping the compressor in the optimal oil pumping state and improving operating efficiency and reliability.

[0078] When the compressor is running at high speed, excess refrigerant oil will be stored in the oil reservoir 41. When there is too much refrigerant oil stored in the oil reservoir 41, it will be discharged from the preset opening 411. When the compressor is running at low speed, the refrigerant oil in the oil reservoir 41 can flow back to the central channel of the crankshaft for compensation. This allows the refrigerant oil to automatically perform storage and compensation functions to match different operating conditions.

[0079] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0080] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0081] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A rotary compressor, characterized in that, Includes an oil storage mechanism, said oil storage mechanism comprising: Oil reservoir (41), the crankshaft of the rotor compressor is rotatably disposed relative to the oil reservoir (41), the inner cavity of the oil reservoir (41) is connected to the central channel of the crankshaft, and a preset opening (411) is provided at the bottom of the oil reservoir (41) to communicate with its inner cavity. Valve plate (42), the valve plate (42) has a first end and a second end that are arranged opposite to each other, the valve plate (42) is located at the bottom of the oil storage shell (41), the first end of the valve plate (42) is connected and fixed to the outer wall of the oil storage shell (41), and the second end of the valve plate (42) is blocked at the preset opening (411). When the rotational speed of the rotor compressor is greater than or equal to the first rotational speed, the oil in the central channel of the crankshaft enters the oil reservoir (41), and when the oil in the oil reservoir (41) reaches a preset amount, the oil in the oil reservoir (41) pushes the second end of the valve plate (42) so that the second end of the valve plate (42) moves away from the preset opening (411) so that the oil in the oil reservoir (41) flows out through the preset opening (411); When the rotational speed of the rotor compressor is less than or equal to the second rotational speed, at least a portion of the oil in the oil reservoir (41) flows into the central channel of the crankshaft; the first rotational speed is greater than the second rotational speed.

2. The rotary compressor according to claim 1, characterized in that, The oil reservoir (41) has a side opening (412) that communicates with the central channel of the crankshaft.

3. The rotary compressor according to claim 1, characterized in that, The oil storage mechanism is located above the cylinder of the rotary compressor.

4. The rotary compressor according to claim 1, characterized in that, The crankshaft has a connecting channel (31), the first end of which is connected to the central channel of the crankshaft, and the second end of which is connected to the inner cavity of the oil reservoir (41).

5. The rotary compressor according to claim 4, characterized in that, The upper flange of the rotary compressor is provided with a mounting hole (71), and part of the oil storage shell (41) passes through the mounting hole (71) so that the inner cavity of the oil storage shell (41) is connected to the second end of the communication channel (31).

6. The rotary compressor according to claim 1, characterized in that, The oil storage mechanism includes: A baffle (43) has a first end and a second end that are disposed opposite to each other. The baffle (43) is located at the bottom of the oil reservoir (41). The first end of the baffle (43) is connected and fixed to the outer wall of the oil reservoir (41). The second end of the baffle (43) is located below the second end of the valve plate (42). There is an axial gap between the second end of the baffle (43) and the second end of the valve plate (42) that is blocked at the preset opening (411) to limit the maximum stroke of the second end of the valve plate (42) away from the preset opening (411).

7. The rotary compressor according to claim 1, characterized in that, The bottom of the oil storage tank (41) is provided with a plurality of the preset openings (411). The second end of the valve plate (42) is blocked at one of the preset openings (411); or There are multiple valve plates (42), and the second ends of the multiple valve plates (42) are correspondingly blocked at the multiple preset openings (411).

8. The rotary compressor according to claim 1, characterized in that, The rotary compressor includes an oil guide plate (6), the top end of which extends into the central channel of the crankshaft, and the bottom end of which extends into the bottom oil sump of the rotary compressor, so that the oil in the bottom oil sump is introduced into the central channel of the crankshaft through the oil guide plate (6).

9. The rotary compressor according to claim 8, characterized in that, The oil guide plate (6) is a sheet-like structure formed by twisting a predetermined angle at at least one intermediate position; and / or The top and bottom ends of the oil guide plate (6) are provided with bifurcated openings (61).

10. The rotary compressor according to claim 1, characterized in that, The displacement of the rotary compressor is 1 to 3 times the volume of the inner cavity of the oil storage tank (41).

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