Pump body structure, compressor and refrigeration equipment

Abstract

The utility model provides a pump body structure, a compressor and refrigeration equipment, the pump body structure comprises: a static vortex plate, the static vortex plate comprises static vortex teeth; the orbiting scroll and the static scroll form an air suction cavity and a compression cavity, the air suction cavity is communicated with the compression cavity, and the orbiting scroll is provided with an oil supply flow path; the oil injection hole is formed in the movable vortex disc and communicates with the oil supply flow path, the static vortex teeth can open or cover the oil injection hole based on the movement of the movable vortex disc relative to the static vortex disc, so that the oil injection hole communicates with the air suction cavity intermittently, that is, in the operation process of the compressor, oil is injected into the air suction cavity intermittently through the oil injection hole, and the air suction cavity communicates with the air suction cavity intermittently. The lubricating oil is driven by the air flow to enter the compression cavity, so that the lubricating oil can be effectively supplemented into the gap between the dynamic vortex plate and the static vortex plate to form a sealing oil surface, the problem of leakage of a pump body structure caused by overturning of the dynamic vortex plate relative to the static vortex plate due to pressure fluctuation can be obviously improved, and the energy efficiency of the compressor is favorably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor equipment, in particular to a pump body structure, a compressor and a refrigeration device. Background Art

[0002] Currently, scroll compressors offer advantages such as simple structure, compact size, light weight, low noise, high mechanical efficiency, and smooth operation. In related art, for scroll compressors with both axial and radial flexibility, during operation, the stationary scroll is pressed against the orbiting scroll by the pressure of the backpressure chamber. However, pressure fluctuations can cause the orbiting scroll to tip over during operation, resulting in poor sealing between the orbiting and stationary scrolls, causing pump leakage and compromising scroll compressor performance. Utility Model Content

[0003] The embodiments of the present utility model are intended to solve at least one of the technical problems existing in the prior art.

[0004] To this end, a first aspect of an embodiment of the present utility model provides a pump body structure.

[0005] A second aspect of the embodiments of the present invention provides a compressor.

[0006] A third aspect of the embodiments of the present invention provides a refrigeration device.

[0007] In view of this, according to the first aspect of an embodiment of the present utility model, a pump body structure is provided, the pump body structure including: a static vortex, the static vortex including a static vortex tooth; a movable vortex, forming an intake chamber and a compression chamber with the static vortex, the intake chamber is connected to the compression chamber, and the movable vortex is provided with an oil supply flow path; an oil injection hole, provided on the movable vortex and connected to the oil supply flow path, based on the movement of the movable vortex relative to the static vortex, the static vortex tooth can open or cover the oil injection hole, so that the oil injection hole is intermittently connected to the intake chamber.

[0008] The pump body structure provided by the embodiment of the present utility model includes a fixed scroll, a movable scroll and an oil injection hole. Specifically, the movable scroll and the fixed scroll form an air suction chamber and a compression chamber, and the air suction chamber is connected to the compression chamber. Optionally, the fixed scroll is also provided with an air suction port and an air discharge port, the air suction port is connected to the air suction chamber, and the air discharge port is connected to the compression chamber. Specifically, during the operation of the compressor, the gas enters the compression chamber from the air suction port and the air suction chamber, and compresses the gas in the compression chamber during the movement (translational rotation) of the movable scroll relative to the fixed scroll. When the exhaust pressure is reached, the compressed high-temperature and high-pressure gas is discharged from the exhaust port.

[0009] Scroll compressors in the related art include a backpressure chamber, located on the side of the fixed scroll facing away from the orbiting scroll, or on the side of the orbiting scroll facing away from the fixed scroll, to provide axial compliance to the fixed or orbiting scroll. When the backpressure chamber is located on the side of the fixed scroll facing away from the orbiting scroll, pressure fluctuations can cause the orbiting scroll to tip over, reducing the sealing effect between the orbiting and fixed scrolls, causing pump leakage and lowering compressor efficiency.

[0010] The oil injection hole is provided on the movable scroll, and the oil injection hole is connected to the oil supply flow path. Optionally, the oil supply flow path is connected to the oil supply channel of the crankshaft. During the movement of the movable scroll relative to the fixed scroll, the oil injection hole is intermittently connected to the suction chamber. That is to say, during the operation of the compressor, oil is intermittently sprayed into the suction chamber through the oil injection hole, and the lubricating oil is driven into the compression chamber by the air flow, so that the lubricating oil can be effectively replenished into the gap between the movable scroll and the fixed scroll to form a sealing oil surface, thereby significantly improving the problem of the movable scroll overturning relative to the fixed scroll due to pressure fluctuations, thereby causing leakage of the pump body structure, improving the sealing effect between the movable scroll and the fixed scroll, and improving the energy efficiency of the compressor.

[0011] It is worth noting that in the process of the movable scroll moving relative to the static scroll, the oil injection hole is driven to move. During this process, the static scroll teeth can cover the oil injection hole to cut off the oil injection hole and the suction chamber, and the static scroll teeth are staggered with at least part of the oil injection hole to connect the oil injection hole and the suction chamber.

[0012] In addition, the pump body structure provided by the above technical solution of the utility model also has the following additional technical features:

[0013] In some technical solutions, optionally, the diameter d of the oil injection hole satisfies 0.8 mm ≤ d ≤ 2.0 mm.

[0014] This technical solution limits the range of oil injection hole diameters to between 0.8mm and 2.0mm. This improves the sealing between the orbiting and stationary scrolls while controlling the amount of lubricating oil entering the compression chamber, ultimately improving the oil discharge rate of the compressor.

[0015] It is understandable that if the diameter of the oil injection hole is too small, that is, less than 0.8mm, the amount of lubricating oil entering the compression chamber with the airflow from the suction chamber will be too small, and the gap between the orbiting scroll and the fixed scroll cannot be effectively sealed, resulting in leakage in the pump body structure. If the diameter of the oil injection hole is too large, that is, greater than 2.0mm, the amount of lubricating oil entering the compression chamber with the airflow from the suction chamber will be too large, increasing the oil discharge rate of the compressor and reducing the energy efficiency of the compressor.

[0016] In some technical solutions, optionally, the movable scroll includes a movable scroll tooth, and the movable scroll tooth includes a tooth end portion away from the central axis of the movable scroll; wherein, during one rotation of the movable scroll, the movable scroll can move from a first position to a second position, based on the movable scroll being in the first position, the tooth end portion is in contact with the static scroll tooth, the static scroll tooth covers the oil injection hole, and the oil injection hole is cut off from the suction chamber, based on the movable scroll being in the second position, the tooth end portion is separated from the static scroll tooth, at least part of the oil injection hole is staggered with the static scroll tooth, and the oil injection hole is connected to the suction chamber.

[0017] In this technical solution, it can be understood that during the operation of the compressor, when the tooth end of the movable scroll is in contact with the static scroll, the air intake stops. This time may be the zero point of one revolution of the movable scroll relative to the static scroll. The movable scroll rotates linearly relative to the static scroll, and the tooth end begins to separate from the static scroll and air intake begins. When the tooth end is in contact with the static scroll again, the air intake stops. This is the end point of one revolution of the movable scroll relative to the static scroll.

[0018] During one rotation of the movable scroll, the movable scroll can move from a first position to a second position. When the movable scroll is in the first position, the tooth end is in contact with the static scroll tooth, and the static scroll tooth covers the oil injection hole, and the oil injection hole is cut off from the suction chamber. That is to say, before suction starts, the oil injection hole stops spraying oil.

[0019] When the movable scroll is in the second position, the tooth end is separated from the static scroll tooth, and the oil spray hole is connected to the suction chamber. That is to say, when the suction starts, oil is sprayed into the suction chamber through the oil spray hole, so that the lubricating oil sprayed through the oil spray hole can enter the compression chamber with the air flow in the suction chamber, and replenish the gap between the movable scroll and the static scroll to form a sealing oil surface, which can significantly improve the problem of the movable scroll overturning relative to the static scroll due to pressure fluctuations, thereby causing leakage of the pump body structure, improve the sealing effect between the movable scroll and the static scroll, and improve the energy efficiency of the compressor.

[0020] In some technical solutions, optionally, during one rotation of the movable scroll, the movable scroll can also move to a third position, where the second position is between the first position and the third position. Based on the movable scroll being in the third position, the stationary scroll tooth covers the oil injection hole; wherein, based on the movable scroll being in the third position, there is a gap between the tooth end and the stationary scroll tooth.

[0021] In this technical solution, it is specified that the movable scroll can also move to a third position. Specifically, since the second position is located between the first position and the third position, that is, within one circle of translational rotation of the movable scroll relative to the fixed scroll, it passes through the first position, the second position and the third position in sequence.

[0022] When the orbiting scroll is in the third position, the static scroll teeth cover the oil injection hole again, that is, the oil injection is stopped. At this time, there is a gap between the tooth end and the static scroll teeth. That is to say, before the orbiting scroll rotates one circle relative to the static scroll and reaches the end point, that is, before the suction stops, the oil injection is stopped, that is, the oil injection is stopped in the latter part of the suction, thereby controlling the amount of lubricating oil entering the compression chamber, improving the sealing effect between the orbiting scroll and the static scroll, and achieving the effect of suppressing the increase in the oil discharge rate, thereby significantly improving the energy efficiency of the compressor.

[0023] In some technical solutions, optionally, during one revolution of the orbiting scroll, from entering the second position to leaving the second position, a rotation angle α of the orbiting scroll relative to the fixed scroll satisfies 180°≤α≤310°.

[0024] In this technical solution, it is defined that during one rotation of the movable scroll, the rotation angle of the movable scroll is between 180° and 310° from the time the movable scroll enters the second position to the time the movable scroll leaves the second position. That is to say, during one rotation of the movable scroll, from the time the oil injection hole is connected with the suction chamber to the time the oil injection hole stops being connected with the suction chamber, the rotation angle of the movable scroll is between 180° and 310°, that is, the oil injection angle is between 180° and 310°, thereby ensuring the amount of lubricating oil replenished into the compression chamber through the suction chamber, forming a sealing oil surface at the gap between the movable scroll and the static scroll, significantly improving the problem of the movable scroll overturning relative to the static scroll due to pressure fluctuations, thereby causing leakage of the pump body structure, improving the sealing effect between the movable scroll and the static scroll, and improving the energy efficiency of the compressor.

[0025] In some technical solutions, optionally, the movable scroll is further provided with an oil inlet hole, which is connected to the oil supply flow path; wherein, along the radial direction of the movable scroll, the oil injection hole is located outside the oil inlet hole.

[0026] This technical solution specifies that the orbiting scroll also has an oil inlet. Specifically, the oil inlet is connected to an oil supply path, and optionally, to an oil supply passage of the crankshaft. Specifically, lubricating oil enters the oil inlet through the oil supply passage, flows through the oil supply path, and is intermittently sprayed into the suction chamber through the oil spray hole. This allows the lubricating oil to be replenished into the compression chamber along with the airflow in the suction chamber, forming a sealing oil surface in the gap between the orbiting scroll and the fixed scroll, thereby improving the sealing effect between the orbiting scroll and the fixed scroll.

[0027] Along the radial direction of the orbiting scroll, the oil injection hole is located outside the oil inlet hole, that is, the oil inlet hole is located radially inward of the oil injection hole. Because the orbiting scroll rotates translationally relative to the fixed scroll during compressor operation, the lubricating oil entering the oil supply path from the oil inlet hole can enter the oil injection hole under the action of centrifugal force. The oil is then intermittently sprayed into the suction chamber through the oil injection hole, effectively replenishing the lubricating oil in the compression chamber and improving leakage problems in the pump structure.

[0028] In some technical solutions, optionally, along the axial direction of the movable scroll, the oil inlet hole and the oil injection hole are respectively located on both sides of the oil supply flow path.

[0029] In this technical solution, the oil injection hole and the oil inlet hole are respectively located on both sides of the oil supply flow path in the axial direction. Optionally, the oil injection hole is located above the oil supply flow path, and the oil inlet hole is located below the oil supply flow path.

[0030] By locating the oil spray hole and the oil inlet hole on both sides of the axial direction of the oil supply flow path respectively, it is convenient for the oil spray hole, the oil supply flow path, the oil inlet hole and the oil supply channel of the crankshaft to form an oil path for the flow of lubricating oil, thereby achieving intermittent oil spraying into the suction chamber through the oil spray hole, so that the lubricating oil can be replenished into the compression chamber along with the air flow in the suction chamber, forming a sealing oil surface in the gap between the movable scroll and the fixed scroll, thereby improving the sealing effect between the movable scroll and the fixed scroll.

[0031] In some technical solutions, optionally, a bearing portion is provided on the side of the movable scroll facing away from the compression chamber, the bearing portion is provided with a bearing hole, and the bearing hole is connected to the oil inlet hole; wherein, the distance L between the center axis of the oil inlet hole and the center axis of the movable scroll in the radial direction of the movable scroll and the diameter c of the bearing hole satisfies the following: 0.25c≤L≤0.45c.

[0032] In this technical solution, it is defined that the movable scroll is further provided with a bearing portion. Specifically, the bearing portion is connected to the crankshaft through a bearing hole.

[0033] Along the radial direction of the orbiting scroll, the distance between the center axis of the oil inlet hole and the center axis of the orbiting scroll is L, and L is between 0.25c and 0.45c, where c is the aperture of the bearing hole. This can improve the sealing effect between the orbiting scroll and the static scroll while controlling the amount of lubricating oil entering the compression chamber and suppressing the increase in the oil discharge rate of the compressor.

[0034] It is understandable that if L is too large, that is, the distance between the oil inlet hole and the central axis of the movable scroll is far, then under the action of centrifugal force, more lubricating oil will enter the oil supply path through the oil inlet hole, making the amount of oil sprayed out through the oil injection hole larger, resulting in an increase in the oil discharge rate of the compressor.

[0035] If L is too small, that is, the distance between the oil inlet hole and the center axis of the movable scroll is close, then under the action of centrifugal force, less lubricating oil enters the oil supply path through the oil inlet hole, and the oil volume cannot be effectively replenished through the oil injection hole, resulting in leakage of the pump body structure.

[0036] In some technical solutions, optionally, the pump body structure further includes a crankshaft, which is connected to the bearing hole. The crankshaft is provided with an oil supply channel, which is connected to the bearing hole.

[0037] This technical solution specifies that the pump structure also includes a crankshaft, specifically, the crankshaft is connected to the bearing hole. Optionally, the compressor also includes a motor and a subframe, with one end of the crankshaft connected to the bearing hole and the other end mounted on the subframe, with the motor connected to the crankshaft. Specifically, driven by the motor, the crankshaft drives the orbiting scroll, via the bearing portion, to translate relative to the stationary scroll, thereby compressing the gas within the compression chamber.

[0038] The crankshaft is provided with an oil supply channel that communicates with the bearing hole. Since the bearing hole is connected to the oil inlet, that is, the oil supply channel is connected to the oil inlet through the bearing hole. Specifically, lubricating oil flows from the oil supply channel through the bearing hole into the oil inlet, flows through the oil supply flow path, and is intermittently sprayed into the suction chamber through the oil spray hole. This allows the lubricating oil to be replenished into the compression chamber along with the airflow in the suction chamber, forming a sealing oil surface in the gap between the orbiting scroll and the fixed scroll, thereby improving the sealing effect between the orbiting scroll and the fixed scroll.

[0039] In some technical solutions, optionally, the oil supply flow path extends radially along the movable scroll, and the end of the oil supply flow path away from the central axis of the movable scroll passes through the outer wall of the movable scroll; the pump body structure also includes a sealing part, which is arranged at the end of the oil supply flow path away from the central axis of the movable scroll.

[0040] In this technical solution, it is defined that the pump body structure also includes a sealing part. Specifically, the oil supply flow path extends along the radial direction of the movable scroll, and the end of the oil supply flow path away from the central axis of the movable scroll passes through the outer wall of the movable scroll, which facilitates the processing and manufacturing of the oil supply flow path and helps to reduce the production cost of the compressor.

[0041] A sealing portion is provided at one end of the oil supply flow path away from the central axis of the movable scroll to seal and prevent lubricating oil from leaking at this location.

[0042] Optionally, the sealing portion includes an oil seal or a sealing screw.

[0043] According to the second aspect of the present invention, a compressor is provided, comprising a pump body structure as provided by any of the above technical solutions, thereby possessing all the beneficial technical effects of the pump body structure, which will not be described in detail here.

[0044] According to the third aspect of the present invention, a refrigeration device is provided, including a pump body structure or a compressor provided by any of the above technical solutions, thereby having all the beneficial technical effects of the pump body structure or the compressor, which will not be repeated here.

[0045] Additional aspects and advantages of the present invention will be given in the following description, and some will become obvious from the following description, or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0047] Figure 1 One of the structural schematic diagrams of the pump body structure according to one embodiment of the utility model is shown;

[0048] Figure 2 The second structural diagram of the pump body structure according to one embodiment of the present utility model is shown;

[0049] Figure 3 Shown Figure 2 A schematic diagram of a partial structure of the pump body structure of the illustrated embodiment;

[0050] Figure 4 The third structural diagram of the pump body structure according to one embodiment of the present utility model is shown;

[0051] Figure 5 Shown Figure 4 A schematic diagram of a partial structure of the pump body structure of the illustrated embodiment;

[0052] Figure 6 A fourth structural diagram of a pump body structure according to an embodiment of the present utility model is shown;

[0053] Figure 7 Shown Figure 6 A schematic diagram of a partial structure of the pump body structure of the illustrated embodiment;

[0054] Figure 8 A schematic structural diagram of a movable scroll according to an embodiment of the present invention is shown;

[0055] Figure 9 A schematic structural diagram of a compressor according to an embodiment of the present utility model is shown.

[0056] in, Figures 1 to 9 The corresponding relationship between the reference numerals and component names is as follows:

[0057] 100 Pump body structure, 110 Stationary scroll, 111 Stationary scroll tooth, 120 Orbital scroll, 121 Oil supply flow path, 122 Orbital scroll tooth, 123 Tooth end, 124 Oil inlet hole, 125 Bearing portion, 126 Bearing hole, 130 Intake chamber, 140 Compression chamber, 150 Oil injection hole, 160 Gap, 170 Crankshaft, 171 Oil supply channel, 180 Sealing portion, 190 Central axis of the orbiting scroll, 210 Central axis of the oil inlet hole, 300 Compressor. DETAILED DESCRIPTION

[0058] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0059] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0060] Refer to the following Figures 1 to 9 The pump structure 100, the compressor 300 and the refrigeration equipment provided according to some embodiments of the present invention are described.

[0061] In one embodiment according to the present application, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9 As shown, a pump body structure 100 is proposed, which includes: a static scroll 110, which includes a static scroll tooth 111; a movable scroll 120, which forms an intake chamber 130 and a compression chamber 140 with the static scroll 110, and the intake chamber 130 is connected to the compression chamber 140, and the movable scroll 120 is provided with an oil supply flow path 121; an oil injection hole 150, which is provided on the movable scroll 120 and is connected to the oil supply flow path 121, and based on the movement of the movable scroll 120 relative to the static scroll 110, the static scroll tooth 111 can open or cover the oil injection hole 150, so that the oil injection hole 150 is intermittently connected to the intake chamber 130.

[0062] The pump body structure 100 provided in the embodiment of the present invention includes a fixed scroll 110, a movable scroll 120 and an oil injection hole 150. Specifically, the movable scroll 120 and the fixed scroll 110 form an intake chamber 130 and a compression chamber 140, and the intake chamber 130 is connected to the compression chamber 140. Optionally, the fixed scroll 110 is further provided with an intake port and an exhaust port, the intake port is connected to the intake chamber 130, and the exhaust port is connected to the compression chamber 140. Specifically, during the operation of the compressor 300, the gas enters the compression chamber 140 from the intake port and the intake chamber 130, and the gas in the compression chamber 140 is compressed during the movement (translational rotation) of the movable scroll 120 relative to the fixed scroll 110. When the exhaust pressure is reached, the compressed high-temperature and high-pressure gas is discharged from the exhaust port.

[0063] Scroll compressors in the related art include a backpressure chamber, located on the side of the fixed scroll facing away from the orbiting scroll, or on the side of the orbiting scroll facing away from the fixed scroll, to provide axial compliance to the fixed or orbiting scroll. When the backpressure chamber is located on the side of the fixed scroll facing away from the orbiting scroll, pressure fluctuations can cause the orbiting scroll to tip over, reducing the sealing effect between the orbiting and fixed scrolls, causing pump leakage and lowering compressor efficiency.

[0064] The oil injection hole 150 is provided on the orbiting scroll 120 and is in communication with the oil supply passage 121. Optionally, the oil supply passage 121 is in communication with the oil supply passage 171 of the crankshaft 170. During the movement of the orbiting scroll 120 relative to the fixed scroll 110, the oil injection hole 150 is intermittently in communication with the suction chamber 130. That is, during the operation of the compressor 300, oil is intermittently sprayed into the suction chamber 130 through the oil injection hole 150. The airflow drives the lubricating oil into the compression chamber 140, allowing the lubricating oil to be effectively replenished into the gap between the orbiting scroll 120 and the fixed scroll 110, forming a sealing oil surface. This can significantly improve the problem of the orbiting scroll 120 tilting relative to the fixed scroll 110 due to pressure fluctuations, thereby causing leakage in the pump body structure 100, thereby improving the sealing effect between the orbiting scroll 120 and the fixed scroll 110, and improving the energy efficiency of the compressor 300.

[0065] It is worth noting that, when the movable scroll 120 moves relative to the fixed scroll 110, the oil injection hole 150 is driven to move. Figures 2 to 7 As shown, the dotted circle in the figure is the motion trajectory of the oil injection hole 150. Specifically, during this process, the static scroll 111 can cover the oil injection hole 150, thereby isolating the oil injection hole 150 from the suction chamber 130. In addition, the static scroll 111 is staggered from at least a portion of the oil injection hole 150, thereby connecting the oil injection hole 150 with the suction chamber 130.

[0066] like Figure 8 As shown, in some embodiments, optionally, the diameter d of the oil injection hole 150 satisfies 0.8 mm ≤ d ≤ 2.0 mm.

[0067] In this embodiment, the diameter of the oil injection hole 150 is limited to a range of values. Specifically, the diameter of the oil injection hole 150 is between 0.8 mm and 2.0 mm. This improves the sealing effect between the orbiting scroll 120 and the fixed scroll 110 while controlling the amount of lubricating oil entering the compression chamber 140, thereby improving the oil discharge rate of the compressor 300.

[0068] It is understood that if the diameter of the oil injection hole 150 is too small, i.e., less than 0.8 mm, the amount of lubricating oil that enters the compression chamber 140 along with the airflow in the suction chamber 130 is too small, and the gap between the orbiting scroll 120 and the fixed scroll 110 cannot be effectively sealed, resulting in leakage in the pump body structure 100. If the diameter of the oil injection hole 150 is too large, i.e., greater than 2.0 mm, the amount of lubricating oil that enters the compression chamber 140 along with the airflow in the suction chamber 130 is too large, increasing the oil discharge rate of the compressor 300 and reducing the energy efficiency of the compressor 300.

[0069] like Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, in some embodiments, optionally, the orbiting scroll 120 includes an orbiting volute 122, and the orbiting volute 122 includes a tooth end 123 away from the central axis 190 of the orbiting scroll; wherein, during one rotation of the orbiting scroll 120, the orbiting scroll 120 can move from a first position to a second position, based on the orbiting scroll 120 being in the first position, the tooth end 123 is in contact with the static volute 111, the static volute 111 covers the oil injection hole 150, and the oil injection hole 150 is cut off from the suction chamber 130, based on the orbiting scroll 120 being in the second position, the tooth end 123 is separated from the static volute 111, at least part of the oil injection hole 150 is staggered with the static volute 111, and the oil injection hole 150 is connected to the suction chamber 130.

[0070] In this embodiment, it can be understood that during the operation of the compressor 300, when the tooth end 123 of the movable scroll 122 is in contact with the fixed scroll 111, the air intake stops. At this time, the movable scroll 120 may be at the zero point of one revolution relative to the fixed scroll 110. Figure 2 and Figure 3 As shown, the movable scroll 120 rotates linearly relative to the fixed scroll 110, the tooth end 123 separates from the fixed scroll tooth 111, and starts to absorb air. When the tooth end 123 and the fixed scroll tooth 111 are re-engaged, the air absorption stops. This is the end point of the movable scroll 120 rotating one circle relative to the fixed scroll 110.

[0071] During one rotation of the orbiting scroll 120, the orbiting scroll 120 can move from the first position to the second position. When the orbiting scroll 120 is in the first position, the tooth end 123 is in contact with the static scroll tooth 111, and the static scroll tooth 111 covers the oil injection hole 150. The oil injection hole 150 and the suction chamber 130 are cut off. That is, before suction starts, the oil injection hole 150 stops injecting oil.

[0072] When the movable scroll 120 is in the second position, the tooth end 123 is separated from the static scroll tooth 111, and the oil spray hole 150 is connected to the suction chamber 130. That is to say, when the suction starts, oil is sprayed into the suction chamber 130 through the oil spray hole 150, so that the lubricating oil sprayed through the oil spray hole 150 can enter the compression chamber 140 along with the air flow in the suction chamber 130, and replenish the gap between the movable scroll 120 and the static scroll 110 to form a sealing oil surface, thereby significantly improving the problem that the movable scroll 120 overturns relative to the static scroll 110 due to pressure fluctuations, thereby causing leakage of the pump body structure 100, improving the sealing effect between the movable scroll 120 and the static scroll 110, and improving the energy efficiency of the compressor 300.

[0073] like Figure 6 and Figure 7 As shown, in some embodiments, optionally, during one rotation of the orbiting scroll 120, the orbiting scroll 120 can also move to a third position, where the second position is between the first position and the third position. Based on the orbiting scroll 120 being in the third position, the static scroll tooth 111 covers the oil injection hole 150; wherein, based on the orbiting scroll 120 being in the third position, there is a gap 160 between the tooth end 123 and the static scroll tooth 111.

[0074] In this embodiment, it is specified that the movable scroll 120 can also move to a third position. Specifically, since the second position is located between the first position and the third position, that is, within one circle of translational rotation of the movable scroll 120 relative to the fixed scroll 110, it passes through the first position, the second position and the third position in sequence.

[0075] When the movable scroll 120 is in the third position, the fixed scroll tooth 111 covers the oil injection hole 150 again, that is, the oil injection is stopped, and at this time there is a gap 160 between the tooth end 123 and the side wall of the fixed scroll tooth 111, that is, before the movable scroll 120 rotates one circle relative to the fixed scroll 110 and reaches the end point, that is, before the suction stops, the oil injection is stopped, that is, the oil injection is stopped in the latter part of the suction, thereby controlling the amount of lubricating oil entering the compression chamber 140, while improving the sealing effect between the movable scroll 120 and the fixed scroll 110, achieving the effect of suppressing the increase in the oil discharge rate, and significantly improving the energy efficiency of the compressor 300.

[0076] In some embodiments, optionally, during one revolution of the orbiting scroll 120 , from entering the second position to leaving the second position, a rotation angle α of the orbiting scroll 120 relative to the fixed scroll 110 satisfies 180°≤α≤310°.

[0077] In this embodiment, it is defined that during the period when the movable scroll 120 rotates one circle, the movable scroll 120 rotates at a angle of 180° to 310° from the time when the movable scroll 120 enters the second position to the time when the movable scroll 120 leaves the second position. In other words, during the period when the movable scroll 120 rotates one circle, from the time when the oil injection hole 150 is connected to the suction chamber 130 to the time when the oil injection hole 150 and the suction chamber 130 stop communicating, the movable scroll 120 rotates at a angle of 180° to 310°. That is, the angle of the oil injection is between 180° and 310°, thereby ensuring the amount of lubricating oil replenished into the compression chamber 140 through the suction chamber 130, forming a sealing oil surface at the gap between the movable scroll 120 and the fixed scroll 110, and significantly improving the problem of the movable scroll 120 overturning relative to the fixed scroll 110 due to pressure fluctuations, thereby causing leakage of the pump body structure 100, improving the sealing effect between the movable scroll 120 and the fixed scroll 110, and improving the energy efficiency of the compressor 300.

[0078] like Figure 1 、 Figure 8 and Figure 9 As shown, in some embodiments, optionally, the movable scroll 120 is further provided with an oil inlet hole 124 , which is connected to the oil supply flow path 121 ; wherein, along the radial direction of the movable scroll 120 , the oil injection hole 150 is located outside the oil inlet hole 124 .

[0079] In this embodiment, the orbiting scroll 120 is further provided with an oil inlet hole 124. Specifically, the oil inlet hole 124 is in communication with the oil supply passage 121. Optionally, the oil inlet hole 124 is in communication with the oil supply channel 171 of the crankshaft 170. Specifically, lubricating oil enters the oil inlet hole 124 through the oil supply channel 171, flows through the oil supply passage 121, and is intermittently sprayed into the suction chamber 130 through the oil spray hole 150. This allows the lubricating oil to be replenished into the compression chamber 140 along with the airflow in the suction chamber 130, forming a sealing oil surface in the gap between the orbiting scroll 120 and the fixed scroll 110, thereby improving the sealing effect between the orbiting scroll 120 and the fixed scroll 110.

[0080] Along the radial direction of the orbiting scroll 120, the oil injection hole 150 is located outside the oil inlet hole 124. In other words, the oil inlet hole 124 is located radially inside the oil injection hole 150. During operation of the compressor 300, the orbiting scroll 120 rotates translationally relative to the fixed scroll 110. As a result, the lubricating oil entering the oil supply passage 121 through the oil inlet hole 124 can enter the oil injection hole 150 under the action of centrifugal force. The oil is then intermittently sprayed into the suction chamber 130 through the oil injection hole 150, effectively replenishing the lubricating oil in the compression chamber 140 and improving leakage in the pump body structure 100.

[0081] like Figure 1 、 Figure 8 and Figure 9As shown, in some embodiments, optionally, along the axial direction of the movable scroll 120 , the oil inlet hole 124 and the oil injection hole 150 are respectively located on both sides of the oil supply path 121 .

[0082] In this embodiment, the oil injection hole 150 and the oil inlet hole 124 are defined as being located on both sides of the oil supply passage 121 in the axial direction. Alternatively, the oil injection hole 150 is located above the oil supply passage 121, and the oil inlet hole 124 is located below the oil supply passage 121.

[0083] By locating the oil spray hole 150 and the oil inlet hole 124 on both sides of the oil supply path 121 in the axial direction, the oil spray hole 150, the oil supply path 121, the oil inlet hole 124 and the oil supply channel 171 of the crankshaft 170 form an oil path for the flow of lubricating oil, thereby achieving intermittent oil spraying into the suction chamber 130 through the oil spray hole 150, so that the lubricating oil can be replenished into the compression chamber 140 along with the air flow in the suction chamber 130, forming a sealing oil surface in the gap between the movable scroll 120 and the fixed scroll 110, thereby improving the sealing effect between the movable scroll 120 and the fixed scroll 110.

[0084] like Figure 8 As shown, in some embodiments, optionally, a bearing portion 125 is provided on the side of the movable scroll 120 facing away from the compression chamber 140, and the bearing portion 125 is provided with a bearing hole 126, and the bearing hole 126 is connected to the oil inlet hole 124; wherein, the distance L between the central axis 210 of the oil inlet hole and the central axis 190 of the movable scroll in the radial direction of the movable scroll 120 and the diameter c of the bearing hole 126 satisfies the following: 0.25c≤L≤0.45c.

[0085] In this embodiment, the movable scroll 120 is further provided with a bearing portion 125 . Specifically, the bearing portion 125 is connected to the crankshaft 170 through a bearing hole 126 .

[0086] Along the radial direction of the movable scroll 120, the distance between the central axis 210 of the oil inlet hole and the central axis 190 of the movable scroll is L, and L is between 0.25c and 0.45c, wherein c is the aperture of the bearing hole 126. This can improve the sealing effect between the movable scroll 120 and the fixed scroll 110 while controlling the amount of lubricating oil entering the compression chamber 140, thereby suppressing the increase in the oil discharge rate of the compressor 300.

[0087] It is understandable that if L is too large, that is, the distance between the oil inlet hole 124 and the center axis 190 of the movable scroll is far, then under the action of centrifugal force, more lubricating oil enters the oil supply path 121 through the oil inlet hole 124, so that the amount of oil sprayed out through the oil injection hole 150 is larger, resulting in an increase in the oil discharge rate of the compressor 300.

[0088] If L is too small, that is, the distance between the oil inlet hole 124 and the center axis 190 of the movable scroll is close, then under the action of centrifugal force, less lubricating oil enters the oil supply path 121 through the oil inlet hole 124, and the oil volume cannot be effectively replenished through the oil injection hole 150, resulting in leakage of the pump body structure 100.

[0089] like Figure 1 and Figure 9 As shown, in some embodiments, optionally, the pump body structure 100 further includes a crankshaft 170 , which is connected to the bearing hole 126 . The crankshaft 170 is provided with an oil supply channel 171 , which is communicated with the bearing hole 126 .

[0090] In this embodiment, the pump body structure 100 is further defined as including a crankshaft 170. Specifically, the crankshaft 170 is connected to the bearing hole 126. Optionally, the compressor 300 further includes a motor and a sub-frame. One end of the crankshaft 170 is connected to the bearing hole 126, and the other end is disposed on the sub-frame. The motor is connected to the crankshaft 170. Specifically, driven by the motor, the crankshaft 170 drives the orbiting scroll 120 to translate relative to the fixed scroll 110 via the bearing portion 125, thereby compressing the gas within the compression chamber 140.

[0091] The crankshaft 170 is provided with an oil supply channel 171, which is connected to the bearing hole 126. Since the bearing hole 126 is connected to the oil inlet hole 124, that is, the oil supply channel 171 is connected to the oil inlet hole 124 through the bearing hole 126. Specifically, the lubricating oil flows from the oil supply channel 171 through the bearing hole 126 into the oil inlet hole 124, flows through the oil supply flow path 121, and is intermittently sprayed into the suction chamber 130 through the oil spray hole 150, so that the lubricating oil can be replenished into the compression chamber 140 along with the air flow in the suction chamber 130, forming a sealing oil surface at the gap between the movable scroll 120 and the fixed scroll 110, thereby improving the sealing effect between the movable scroll 120 and the fixed scroll 110.

[0092] like Figure 1 、 Figure 8 and Figure 9 As shown, in some embodiments, optionally, the oil supply flow path 121 extends radially along the movable scroll 120, and the end of the oil supply flow path 121 away from the center axis 190 of the movable scroll passes through the outer wall of the movable scroll 120; the pump body structure 100 also includes a sealing portion 180, which is provided at the end of the oil supply flow path 121 away from the center axis 190 of the movable scroll.

[0093] In this embodiment, it is defined that the pump body structure 100 also includes a sealing portion 180. Specifically, the oil supply path 121 extends in the radial direction of the movable scroll 120, and the end of the oil supply path 121 away from the center axis 190 of the movable scroll passes through the outer wall of the movable scroll 120, which facilitates the processing and manufacturing of the oil supply path 121 and helps reduce the production cost of the compressor 300.

[0094] A sealing portion 180 is provided at one end of the oil supply passage 121 away from the center axis 190 of the orbiting scroll to seal and prevent the lubricating oil from leaking at this end.

[0095] Optionally, the sealing portion 180 includes an oil seal or a sealing screw.

[0096] According to the second aspect of the present invention, a compressor 300 is provided, comprising a pump body structure 100 as provided in any of the above embodiments, and thus possessing all the beneficial technical effects of the pump body structure 100, which will not be described in detail here.

[0097] Alternatively, as Figure 9 As shown, compressor 300 includes a scroll compressor. Specifically, the scroll compressor includes a housing and a scroll compressor assembly mounted within the housing. The scroll compressor assembly includes a main frame, a fixed scroll (fixed scroll 110), an orbiting scroll (orbiting scroll 120), a crankshaft 170, a motor, and a sub-frame. The main frame is fixed to the upper portion of the housing, with the fixed scroll and orbiting scroll mounted above it. The fixed scroll and orbiting scroll combine to form a scroll compression chamber (compression chamber 140).

[0098] The upper portion of crankshaft 170 passes through the mainframe bearing hole, and the eccentric portion of the upper portion of crankshaft 170 is inserted into the eccentric bearing hole (bearing hole 126) of the orbiting scroll. The subframe is fixed to the lower portion of the housing and has a subframe bearing hole. The lower portion of crankshaft 170 passes through the subframe bearing hole. The bottom of the compressor is an oil sump, which stores lubricating oil. The lower end of the crankshaft is equipped with an oiling plate, which is immersed in the lubricating oil.

[0099] like Figure 8 As shown, an oil supply passage is provided in the movable scroll end plate, and the oil supply passage includes an oil inlet hole 124, an oil injection hole 150 and a drainage channel (oil supply passage 121). The oil inlet hole 124 and the oil injection hole 150 are respectively provided on both sides of the movable disk end plate, wherein the oil inlet hole 124 is located on the inner side of the movable disk bearing hole, and the oil injection hole 150 is located on the side of the end plate vortex tooth (moving vortex tooth 122). The drainage passage is provided in the radial direction of the movable disk end plate, and passes through and connects the oil inlet hole 124 and the oil injection hole 150.

[0100] like Figure 1 As shown, in the pump body assembly (pump body structure 100 ), the lubricating oil passes through the crankshaft 170 and the movable scroll oil hole and is connected to the pump body suction chamber 130 , and the lubricating oil is replenished to the compression chamber 140 to improve the oil sealing capability.

[0101] Figure 2 and Figure 3 Open for inhalation, Figure 4 and Figure 5 For the middle of inspiration, Figure 6 and Figure 7 In the final stage of suction, the movable scroll 120 rotates in a linear motion due to the eccentric part of the crankshaft 170, and the oil injection hole 150 on the movable scroll 120 is periodically and intermittently connected with the suction chamber 130 of the pump body, completing the intermittent oil replenishment action, so that when the pump body suction is turned on, the movable scroll sprays oil; in the final stage of suction, the oil injection stops, thereby controlling the amount of lubricating oil entering the compression chamber 140, improving the sealing effect between the movable scroll 120 and the fixed scroll 110, and achieving the effect of suppressing the increase in the oil discharge rate, thereby significantly improving the energy efficiency of the compressor 300.

[0102] According to the third aspect of the present invention, a refrigeration device is provided, including a pump body structure 100 or a compressor 300 as provided in any of the above embodiments, thereby having all the beneficial technical effects of the pump body structure 100 or the compressor 300, which will not be repeated here.

[0103] In this specification, the terms "connect," "install," and "fix" should be understood broadly. For example, "connect" can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0104] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0105] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A pump body structure, characterized in that: include: a stationary scroll, the stationary scroll comprising stationary scroll teeth; An orbiting scroll, forming an air suction chamber and a compression chamber with the fixed scroll, wherein the air suction chamber is connected to the compression chamber, and the orbiting scroll is provided with an oil supply passage; An oil spray hole is provided on the movable scroll and is connected to the oil supply flow path. Based on the movement of the movable scroll relative to the fixed scroll, the fixed scroll tooth can open or cover the oil spray hole so that the oil spray hole is intermittently connected to the suction chamber.

2. The pump structure according to claim 1, characterized in that: The diameter d of the oil injection hole satisfies 0.8 mm ≤ d ≤ 2.0 mm.

3. The pump structure according to claim 1, characterized in that: The movable scroll includes a movable scroll tooth, and the movable scroll tooth includes a tooth end portion away from the central axis of the movable scroll; Wherein, during one rotation of the movable scroll, the movable scroll can move from a first position to a second position; based on the movable scroll being in the first position, the tooth end is in contact with the static scroll, the static scroll covers the oil injection hole, and the oil injection hole is cut off from the suction chamber; based on the movable scroll being in the second position, the tooth end is separated from the static scroll, at least part of the oil injection hole is staggered with the static scroll, and the oil injection hole is connected to the suction chamber.

4. The pump structure according to claim 3, characterized in that: During one rotation of the orbiting scroll, the orbiting scroll can also move to a third position, the second position being between the first position and the third position, and when the orbiting scroll is at the third position, the fixed scroll covers the oil injection hole; Wherein, based on the movable scroll being located at the third position, there is a gap between the tooth end portion and the stationary scroll tooth.

5. The pump structure according to claim 3, characterized in that: During one orbit of the orbiting scroll, from entering the second position to leaving the second position, a rotation angle α of the orbiting scroll relative to the fixed scroll satisfies 180°≤α≤310°.

6. The pump structure according to any one of claims 1 to 5, characterized in that: The movable scroll is further provided with an oil inlet hole, which is in communication with the oil supply passage; Wherein, along the radial direction of the movable scroll, the oil injection hole is located outside the oil inlet hole.

7. The pump structure according to claim 6, characterized in that: Along the axial direction of the movable scroll, the oil inlet hole and the oil injection hole are respectively located on both sides of the oil supply flow path.

8. The pump structure according to claim 6, characterized in that: A bearing portion is provided on a side of the movable scroll away from the compression chamber, the bearing portion is provided with a bearing hole, and the bearing hole is communicated with the oil inlet hole; The distance L between the central axis of the oil inlet hole and the central axis of the movable scroll in the radial direction of the movable scroll and the diameter c of the bearing hole satisfies the following: 0.25c≤L≤0.45c.

9. The pump structure according to claim 8, characterized in that: Also includes: A crankshaft is connected to the bearing hole. The crankshaft is provided with an oil supply channel, and the oil supply channel is communicated with the bearing hole.

10. The pump structure according to any one of claims 1 to 5, characterized in that: The oil supply flow path extends in the radial direction of the movable scroll, and one end of the oil supply flow path away from the central axis of the movable scroll passes through the outer wall of the movable scroll; the pump body structure further includes: The sealing portion is provided at one end of the oil supply passage away from the central axis of the movable scroll.

11. A compressor, characterized in that: The pump comprises the pump body structure according to any one of claims 1 to 10.

12. A refrigeration device, characterized in that: include: The pump structure according to any one of claims 1 to 10; or The compressor of claim 11.

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