Pump body structure, compressor and refrigeration equipment

Abstract

The invention provides a pump body structure, a compressor and refrigeration equipment, and the pump body structure comprises a static vortex plate which 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] This invention relates to the field of compressor equipment technology, and more specifically, to a pump body structure, a compressor, and a refrigeration device. Background Technology

[0002] Currently, scroll compressors possess advantages such as simple structure, small size, light weight, low noise, high mechanical efficiency, and stable operation. In related technologies, for scroll compressors with both axial and radial flexibility, the stationary scroll is pressed against the moving scroll under the pressure of the back pressure chamber during operation. However, with pressure fluctuations, the moving scroll may overturn during operation, leading to poor sealing between the moving and stationary scrolls, resulting in pump body leakage and affecting the performance of the scroll compressor. Summary of the Invention

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

[0004] Therefore, a first aspect of the embodiments of the present invention provides a pump body structure.

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

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

[0007] In view of the above, according to a first aspect of the present invention, a pump body structure is provided, the pump body structure comprising: a stationary volute, the stationary volute including stationary volute teeth; a moving volute, forming an intake chamber and a compression chamber with the stationary volute, the intake chamber and the compression chamber being in communication, the moving volute being provided with an oil supply flow path; and an oil injection hole disposed on the moving volute and communicating with the oil supply flow path, wherein based on the movement of the moving volute relative to the stationary volute, the stationary volute teeth can open or close the oil injection hole so that the oil injection hole is intermittently connected to the intake chamber.

[0008] The pump body structure provided in this embodiment of the invention includes a stationary volute, a moving volute, and an oil injection port. Specifically, the moving volute and the stationary volute form an intake chamber and a compression chamber, which are connected. Optionally, the stationary volute also has an intake port and an exhaust port, with the intake port connected to the intake chamber and the exhaust port connected to the compression chamber. Specifically, during compressor operation, gas enters the compression chamber through the intake port and the intake chamber, and compresses the gas in the compression chamber during the movement (translational rotation) of the moving volute relative to the stationary volute. When the exhaust pressure is reached, the compressed high-temperature, high-pressure gas is discharged from the exhaust port.

[0009] The scroll compressor in the related technology includes a back pressure chamber, which is located on the side of the stationary scroll away from the moving scroll, or on the side of the moving scroll away from the stationary scroll, to provide axial flexibility to the stationary or moving scroll. When the back pressure chamber is located on the side of the stationary scroll away from the moving scroll, pressure fluctuations can cause the moving scroll to overturn, reducing the sealing effect between the moving and stationary scrolls, leading to pump leakage and reduced compressor efficiency.

[0010] The oil injection port is located on the moving scroll and is connected to the oil supply path. Optionally, the oil supply path is connected to the oil supply channel of the crankshaft. During the movement of the moving scroll relative to the stationary scroll, the oil injection port is intermittently connected to the suction chamber. That is, during compressor operation, oil is intermittently injected into the suction chamber through the oil injection port. The airflow carries the lubricating oil into the compression chamber, effectively replenishing the gap between the moving and stationary scrolls to form a sealing oil surface. This significantly improves the problem of pump body leakage caused by the moving scroll overturning relative to the stationary scroll due to pressure fluctuations, improves the sealing effect between the moving and stationary scrolls, and enhances compressor efficiency.

[0011] It is worth noting that during the movement of the moving scroll relative to the stationary scroll, the fuel injection hole is driven to move. During this process, the stationary scroll tooth can cover the fuel injection hole to cut off the fuel injection hole from the intake chamber. Also, the stationary scroll tooth is offset from at least part of the fuel injection hole to allow the fuel injection hole to communicate with the intake chamber.

[0012] In addition, the pump body structure provided by the above-described technical solution of the present invention also has the following additional technical features:

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

[0014] This technical solution defines the range of values ​​for the oil injection orifice diameter. Specifically, the orifice diameter is between 0.8mm and 2.0mm, which improves the sealing effect between the moving and stationary scrolls while controlling the amount of lubricating oil entering the compression chamber, thus improving the compressor's oil discharge rate.

[0015] Understandably, if the nozzle diameter is too small (less than 0.8mm), the amount of lubricating oil entering the compression chamber with the airflow from the intake chamber will be insufficient, failing to effectively seal the gap between the moving and stationary scrolls, leading to pump leakage. Conversely, if the nozzle diameter is too large (greater than 2.0mm), the amount of lubricating oil entering the compression chamber with the airflow from the intake chamber will be excessive, increasing the compressor's oil discharge rate and reducing compressor efficiency.

[0016] Optionally, in some technical solutions, the moving scroll includes moving scroll teeth, each scroll tooth having a tooth tip located away from the central axis of the moving scroll; wherein, during one revolution of the moving scroll, the moving scroll can move from a first position to a second position. When the moving scroll is in the first position, the tooth tip is in contact with the stationary scroll tooth, the stationary scroll tooth covers the oil injection hole, and the oil injection hole is cut off from the air intake chamber. When the moving scroll is in the second position, the tooth tip is separated from the stationary scroll tooth, at least part of the oil injection hole is offset from the stationary scroll tooth, and the oil injection hole is connected to the air intake chamber.

[0017] In this technical solution, it can be understood that during the operation of the compressor, when the tip of the moving scroll tooth is in contact with the stationary scroll tooth, the intake stops. This can be considered the zero point of one rotation of the moving scroll relative to the stationary scroll. The moving scroll rotates in translational motion relative to the stationary scroll, and the tip of the tooth begins to separate from the stationary scroll tooth, and the intake begins. When the tip of the tooth is in contact with the stationary scroll tooth again, the intake stops. This is the end point of one rotation of the moving scroll relative to the stationary scroll.

[0018] During one revolution of the moving scroll, the moving scroll can move from the first position to the second position. When the moving scroll is in the first position, the tooth tip is in contact with the stationary scroll tooth, and the stationary scroll tooth seals the oil injection hole. The oil injection hole is cut off from the air intake chamber. In other words, the oil injection hole stops injecting oil when air intake has not started.

[0019] When the moving scroll is in the second position, the tooth tip separates from the stationary scroll tooth, and the oil injection hole connects with the suction chamber. That is, when suction begins, oil is sprayed into the suction chamber through the oil injection hole, so that the lubricating oil sprayed through the oil injection hole can enter the compression chamber with the airflow in the suction chamber, replenishing the gap between the moving scroll and the stationary scroll to form a sealing oil surface. This can significantly improve the problem of pump body leakage caused by the moving scroll overturning relative to the stationary scroll due to pressure fluctuations, improve the sealing effect between the moving scroll and the stationary scroll, and improve the compressor's energy efficiency.

[0020] In some technical solutions, optionally, during one revolution of the moving scroll, the moving scroll can also move to a third position, with the second position located between the first and third positions. Based on the moving scroll being in the third position, the stationary scroll teeth cover the oil injection holes; wherein, based on the moving scroll being in the third position, there is a gap between the tooth tip and the stationary scroll teeth.

[0021] In this technical solution, the moving volute is also allowed to move to a third position. Specifically, since the second position is located between the first and third positions, the moving volute passes through the first, second, and third positions in sequence during one rotation of its translational motion relative to the stationary volute.

[0022] When the moving scroll is in the third position, the stationary scroll teeth seal the oil injection hole again, thus stopping oil injection. At this time, there is a gap between the tooth tip and the stationary scroll teeth. In other words, oil injection stops before the moving scroll reaches the end of one rotation relative to the stationary scroll, that is, before the intake stops. This means that oil injection stops in the later stage of intake, thereby controlling the amount of lubricating oil entering the compression chamber. While improving the sealing effect between the moving scroll and the stationary scroll, it also suppresses the increase of oil discharge rate, significantly improving the compressor's energy efficiency.

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

[0024] In this technical solution, the rotation angle of the moving scroll is limited to between 180° and 310° during one rotation of the moving scroll, from entering the second position to leaving the second position. That is, during one rotation of the moving scroll, from the moment the oil injection hole connects with the suction chamber to the moment the connection between the oil injection hole and the suction chamber stops, the rotation angle of the moving scroll is between 180° and 310°, which means the oil injection angle is between 180° and 310°. This ensures that the amount of lubricating oil replenished to the compression chamber through the suction chamber is sufficient, forming a sealing oil surface at the gap between the moving scroll and the stationary scroll. This significantly improves the problem of pump body leakage caused by the moving scroll overturning relative to the stationary scroll due to pressure fluctuations, improves the sealing effect between the moving scroll and the stationary scroll, and enhances the compressor's energy efficiency.

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

[0026] In this technical solution, the moving scroll is further provided with an oil inlet. Specifically, the oil inlet is connected to the oil supply path, and optionally, it is connected to the crankshaft's oil supply channel. Specifically, lubricating oil enters the oil inlet through the oil supply channel, flows through the oil supply path, and is intermittently sprayed into the intake chamber through the oil injection hole. This allows the lubricating oil to be replenished to the compression chamber along with the airflow in the intake chamber, forming a sealing oil surface at the gap between the moving scroll and the stationary scroll, thus improving the sealing effect between them.

[0027] Along the radial direction of the moving scroll, the oil injection hole is located outside the oil inlet hole, meaning the oil inlet hole is located radially inside the oil injection hole. During compressor operation, the moving scroll rotates relative to the stationary scroll, allowing the lubricating oil entering the oil supply path from the oil inlet hole to enter the oil injection hole under centrifugal force. This oil is then intermittently injected into the suction chamber through the injection hole, effectively replenishing the lubricating oil in the compression chamber and improving leakage issues in the pump body structure.

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

[0029] In this technical solution, the injection port and the inlet port are respectively located on opposite sides of the axial direction of the fuel supply path. Optionally, the injection port is located above the fuel supply path, and the inlet port is located below the fuel supply path.

[0030] By placing the oil injection hole and the oil inlet hole on opposite sides of the oil supply flow path axially, the oil injection hole, the oil supply flow path, the oil inlet hole, and the crankshaft's oil supply channel can form an oil passage for lubricating oil to flow. This allows for intermittent oil injection into the intake chamber through the oil injection hole, enabling the lubricating oil to be replenished into the compression chamber along with the airflow in the intake chamber. A sealing oil surface is formed in the gap between the moving scroll and the stationary scroll, improving the sealing effect between the moving scroll and the stationary scroll.

[0031] In some technical solutions, optionally, a bearing part is provided on the side of the moving scroll away from the compression chamber, and the bearing part is provided with a bearing hole, which is connected to the oil inlet hole; wherein, the distance L between the central axis of the oil inlet hole and the central axis of the moving scroll in the radial direction of the moving scroll, and the diameter c of the bearing hole, satisfy 0.25c≤L≤0.45c.

[0032] In this technical solution, the moving scroll is also provided with a bearing section, specifically, the bearing section is connected to the crankshaft through a bearing hole.

[0033] Along the radial direction of the moving scroll, the distance between the central axis of the oil inlet hole and the central axis of the moving scroll is L, which is between 0.25c and 0.45c, where c is the diameter of the bearing hole. This allows for the control of the amount of lubricating oil entering the compression chamber while improving the sealing effect between the moving scroll and the stationary scroll, thus suppressing the increase in the compressor's oil discharge rate.

[0034] Understandably, if L is too large, that is, the distance between the oil inlet and the central axis of the moving scroll is too far, then under the action of centrifugal force, more lubricating oil will enter the oil supply path through the oil inlet, resulting in a larger amount of oil being sprayed out through the oil injection hole, which leads to an increase in the compressor's oil discharge rate.

[0035] If L is too small, that is, the distance between the oil inlet and the central axis of the moving scroll is too close, then under the action of centrifugal force, less lubricating oil will enter the oil supply path through the oil inlet, 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, the pump body structure may optionally include a crankshaft connected to a bearing bore, and the crankshaft is provided with an oil supply channel that communicates with the bearing bore.

[0037] In this technical solution, the pump body structure is defined to include a crankshaft, specifically, the crankshaft is connected to a bearing bore. Optionally, the compressor also includes a motor and a sub-frame, with one end of the crankshaft connected to the bearing bore and the other end mounted on the sub-frame, and the motor connected to the crankshaft. Specifically, driven by the motor, the crankshaft drives the moving scroll to rotate relative to the stationary scroll via the bearing portion, thereby compressing the gas in the compression chamber.

[0038] The crankshaft is equipped with an oil supply channel that connects to the bearing bore. Since the bearing bore is connected to the oil inlet, the oil supply channel connects to the oil inlet via the bearing bore. Specifically, lubricating oil enters the oil inlet from the oil supply channel through the bearing bore, flows through the oil supply path, and is intermittently sprayed into the intake chamber through the oil injection holes. This allows the lubricating oil to replenish the compression chamber along with the airflow in the intake chamber, forming a sealing oil surface in the gap between the moving and stationary scrolls, thus improving the sealing effect between them.

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

[0040] In this technical solution, the pump body structure is defined to also include a sealing part. Specifically, the oil supply flow path extends along the radial direction of the moving scroll, and the end of the oil supply flow path away from the central axis of the moving scroll passes through the outer wall of the moving 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 section is installed at the end of the oil supply path away from the central axis of the moving scroll to prevent lubricating oil leakage at that point.

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

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

[0044] According to a third aspect of the present invention, a refrigeration device is provided, comprising a pump body structure or compressor as provided in any of the above-described technical solutions, and thus possessing all the beneficial technical effects of the pump body structure or compressor, which will not be elaborated further here.

[0045] Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description or may be learned by practice of the invention. Attached Figure Description

[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 taken in conjunction with the following drawings, in which:

[0047] Figure 1 One of the schematic diagrams of a pump body structure according to an embodiment of the present invention is shown;

[0048] Figure 2 A second schematic diagram of a pump body structure according to an embodiment of the present invention is shown;

[0049] Figure 3 It shows Figure 2 A partial structural schematic diagram of the pump body structure in the illustrated embodiment;

[0050] Figure 4 A third schematic diagram of the pump body structure according to an embodiment of the present invention is shown;

[0051] Figure 5 It shows Figure 4 A partial structural schematic diagram of the pump body structure in the illustrated embodiment;

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

[0053] Figure 7 It shows Figure 6 A partial structural schematic diagram of the pump body structure in the illustrated embodiment;

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

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

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

[0057] 100 Pump body structure, 110 stationary scroll, 111 stationary scroll teeth, 120 moving scroll, 121 oil supply flow path, 122 moving scroll teeth, 123 tooth tip, 124 oil inlet, 125 bearing part, 126 bearing hole, 130 suction chamber, 140 compression chamber, 150 oil injection hole, 160 clearance, 170 crankshaft, 171 oil supply channel, 180 sealing part, 190 central axis of moving scroll, 210 central axis of oil inlet, 300 compressor. Detailed Implementation

[0058] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0059] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

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

[0061] In one embodiment according to this application, such as 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 stationary volute 110, which includes stationary volute teeth 111; a moving volute 120, which forms an intake chamber 130 and a compression chamber 140 with the stationary volute 110, the intake chamber 130 and the compression chamber 140 being connected, and the moving volute 120 being provided with an oil supply flow path 121; and an oil injection hole 150, which is provided on the moving volute 120 and is connected to the oil supply flow path 121. Based on the movement of the moving volute 120 relative to the stationary volute 110, the stationary volute teeth 111 can open or close 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 this embodiment of the invention includes a stationary volute 110, a moving volute 120, and an oil injection port 150. Specifically, the moving volute 120 and the stationary volute 110 form an intake chamber 130 and a compression chamber 140, which are connected. Optionally, the stationary volute 110 is further provided with an intake port and an exhaust port, which are 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, gas enters the compression chamber 140 from the intake port and the intake chamber 130, and compresses the gas in the compression chamber 140 during the movement (translational rotation) of the moving volute 120 relative to the stationary volute 110. When the exhaust pressure is reached, the compressed high-temperature and high-pressure gas is discharged from the exhaust port.

[0063] The scroll compressor in the related technology includes a back pressure chamber, which is located on the side of the stationary scroll away from the moving scroll, or on the side of the moving scroll away from the stationary scroll, to provide axial flexibility to the stationary or moving scroll. When the back pressure chamber is located on the side of the stationary scroll away from the moving scroll, pressure fluctuations can cause the moving scroll to overturn, reducing the sealing effect between the moving and stationary scrolls, leading to pump leakage and reduced compressor efficiency.

[0064] An oil injection port 150 is located on the moving scroll 120 and is connected to the oil supply path 121. Optionally, the oil supply path 121 is connected to the oil supply channel 171 of the crankshaft 170. During the movement of the moving scroll 120 relative to the stationary scroll 110, the oil injection port 150 is intermittently connected to the suction chamber 130. That is, during the operation of the compressor 300, oil is intermittently injected into the suction chamber 130 through the oil injection port 150. The airflow carries the lubricating oil into the compression chamber 140, so that the lubricating oil can effectively replenish the gap between the moving scroll 120 and the stationary scroll 110, forming a sealing oil surface. This can significantly improve the problem of leakage in the pump body structure 100 caused by the overturning of the moving scroll 120 relative to the stationary scroll 110 due to pressure fluctuations, improve the sealing effect between the moving scroll 120 and the stationary scroll 110, and improve the energy efficiency of the compressor 300.

[0065] It is worth noting that during the movement of the moving scroll 120 relative to the stationary scroll 110, it drives the oil injection hole 150 to move, such as... Figures 2 to 7 As shown in the figure, the dashed circle represents the movement trajectory of the fuel injection hole 150. Specifically, during this process, the stationary vortex 111 can cover the fuel injection hole 150 to cut off the fuel injection hole 150 from the intake chamber 130, and the stationary vortex 111 is offset from at least part of the fuel injection hole 150 to allow the fuel injection hole 150 to communicate with the intake chamber 130.

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

[0067] In this embodiment, the range of the diameter of the oil injection hole 150 is defined. Specifically, the diameter of the oil injection hole 150 is between 0.8 mm and 2.0 mm, which can improve the sealing effect between the moving scroll 120 and the stationary 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] Understandably, if the diameter of the oil injection hole 150 is too small, i.e., less than 0.8 mm, the amount of lubricating oil entering the compression chamber 140 with the airflow in the suction chamber 130 will be too small, failing to effectively seal the gap between the moving scroll 120 and the stationary scroll 110, leading to 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 entering the compression chamber 140 with the airflow in the suction chamber 130 will be 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 moving scroll 120 includes moving scroll teeth 122, the moving scroll teeth 122 including tooth ends 123 away from the central axis 190 of the moving scroll; wherein, during one rotation of the moving scroll 120, the moving scroll 120 can move from a first position to a second position. Based on the moving scroll 120 being in the first position, the tooth ends 123 are in contact with the stationary scroll teeth 111, the stationary scroll teeth 111 cover the oil injection hole 150, and the oil injection hole 150 is cut off from the air intake chamber 130. Based on the moving scroll 120 being in the second position, the tooth ends 123 are separated from the stationary scroll teeth 111, at least part of the oil injection hole 150 is offset from the stationary scroll teeth 111, and the oil injection hole 150 is in communication with the air intake chamber 130.

[0070] In this embodiment, it can be understood that during the operation of the compressor 300, when the tooth tip 123 of the moving scroll 122 engages with the stationary scroll 111, the suction stops. This can be considered the zero point of one revolution of the moving scroll 120 relative to the stationary scroll 110. Figure 2 and Figure 3 As shown, the moving scroll 120 rotates in translation relative to the stationary scroll 110. The tooth tip 123 separates from the stationary scroll tooth 111 and begins to draw in air. When the tooth tip 123 and the stationary scroll tooth 111 re-engage, the air drawing stops. This is the end point of one rotation of the moving scroll 120 relative to the stationary scroll 110.

[0071] During one revolution of the moving scroll 120, the moving scroll 120 can move from the first position to the second position. When the moving scroll 120 is in the first position, the tooth tip 123 is in contact with the stationary scroll tooth 111, and the stationary scroll tooth 111 covers the oil injection hole 150. The oil injection hole 150 is cut off from the air intake chamber 130. That is to say, when air intake has not started, the oil injection hole 150 stops injecting oil.

[0072] When the moving scroll 120 is in the second position, the tooth tip 123 separates from the stationary scroll tooth 111, and the oil injection hole 150 is connected to the suction chamber 130. That is, when suction begins, oil is injected into the suction chamber 130 through the oil injection hole 150, so that the lubricating oil sprayed through the oil injection hole 150 can enter the compression chamber 140 with the airflow in the suction chamber 130, and replenish the gap between the moving scroll 120 and the stationary scroll 110 to form a sealing oil surface. This can significantly improve the problem of leakage in the pump body structure 100 caused by the overturning of the moving scroll 120 relative to the stationary scroll 110 due to pressure fluctuations, improve the sealing effect between the moving scroll 120 and the stationary scroll 110, and improve the energy efficiency of the compressor 300.

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

[0074] In this embodiment, the moving volute 120 is also allowed to move to a third position. Specifically, since the second position is located between the first and third positions, the moving volute 120 passes through the first, second, and third positions in sequence during one rotation of its translational motion relative to the stationary volute 110.

[0075] When the moving scroll 120 is in the third position, the stationary scroll tooth 111 seals the oil injection hole 150 again, thus stopping oil injection. At this time, there is a gap 160 between the tooth tip 123 and the side wall of the stationary scroll tooth 111. In other words, oil injection stops before the moving scroll 120 reaches the end point after rotating one revolution relative to the stationary scroll 110, that is, before the intake stops. This means that oil injection stops in the later stage of intake, thereby controlling the amount of lubricating oil entering the compression chamber 140. While improving the sealing effect between the moving scroll 120 and the stationary scroll 110, it also suppresses the increase of oil discharge rate, significantly improving the energy efficiency of the compressor 300.

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

[0077] In this embodiment, during one complete rotation of the moving scroll 120, from entering the second position to leaving the second position, the rotation angle of the moving scroll 120 is defined to be between 180° and 310°. That is, during one complete rotation of the moving scroll 120, from the moment the injection port 150 connects to the intake chamber 130 until the connection between the injection port 150 and the intake chamber 130 ceases, the rotation angle of the moving scroll 120 is between 180° and 310°. The oil injection angle is between 180° and 310°, which ensures that the amount of lubricating oil supplied to the compression chamber 140 through the suction chamber 130 is sufficient. A sealing oil surface is formed at the gap between the moving scroll 120 and the stationary scroll 110, which significantly improves the problem of leakage in the pump body structure 100 caused by the overturning of the moving scroll 120 relative to the stationary scroll 110 due to pressure fluctuations. This improves the sealing effect between the moving scroll 120 and the stationary scroll 110 and enhances the energy efficiency of the compressor 300.

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

[0079] In this embodiment, the moving scroll 120 is further provided with an oil inlet 124. Specifically, the oil inlet 124 is connected to the oil supply path 121. Optionally, the oil inlet 124 is connected to the oil supply channel 171 of the crankshaft 170. Specifically, lubricating oil enters the oil inlet 124 through the oil supply channel 171, flows through the oil supply path 121, and is intermittently sprayed into the intake 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 intake chamber 130, forming a sealing oil surface in the gap between the moving scroll 120 and the stationary scroll 110, thereby improving the sealing effect between the moving scroll 120 and the stationary scroll 110.

[0080] Along the radial direction of the moving scroll 120, the oil injection hole 150 is located outside the oil inlet hole 124, that is, the oil inlet hole 124 is located radially inside the oil injection hole 150. During the operation of the compressor 300, the moving scroll 120 rotates relative to the stationary scroll 110, allowing the lubricating oil entering the oil supply path 121 from the oil inlet hole 124 to enter the oil injection hole 150 under centrifugal force. This lubricating oil is then intermittently injected into the suction chamber 130 through the oil injection hole 150, effectively replenishing the lubricating oil in the compression chamber 140 and improving the leakage problem of 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 rotating scroll 120, the oil inlet 124 and the oil injection port 150 are located on both sides of the oil supply path 121.

[0082] In this embodiment, the injection port 150 and the inlet port 124 are respectively located on both sides of the oil supply flow path 121 in the axial direction. Optionally, the injection port 150 is located above the oil supply flow path 121, and the inlet port 124 is located below the oil supply flow path 121.

[0083] By placing the oil injection hole 150 and the oil inlet hole 124 on both sides of the oil supply flow path 121 in the axial direction, the oil injection hole 150, the oil supply flow path 121, the oil inlet hole 124 and the oil supply channel 171 of the crankshaft 170 can form an oil passage for the flow of lubricating oil. This allows oil to be intermittently injected into the intake chamber 130 through the oil injection hole 150, so that the lubricating oil can be supplemented into the compression chamber 140 with the airflow in the intake chamber 130. A sealing oil surface is formed in the gap between the moving scroll 120 and the stationary scroll 110, improving the sealing effect between the moving scroll 120 and the stationary scroll 110.

[0084] like Figure 8 As shown, in some embodiments, optionally, a bearing portion 125 is provided on the side of the moving scroll 120 away from the compression chamber 140, and the bearing portion 125 is provided with a bearing hole 126, which communicates with 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 moving scroll 120 in the radial direction of the moving scroll 120 and the diameter c of the bearing hole 126 satisfy the condition 0.25c≤L≤0.45c.

[0085] In this embodiment, the moving 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 moving scroll 120, the distance between the central axis 210 of the oil inlet hole and the central axis 190 of the moving scroll is L, where L is between 0.25c and 0.45c, and c is the diameter of the bearing hole 126. This allows for the control of the amount of lubricating oil entering the compression chamber 140 while improving the sealing effect between the moving scroll 120 and the stationary scroll 110, thus suppressing the increase in the oil discharge rate of the compressor 300.

[0087] Understandably, if L is too large, that is, the distance between the oil inlet 124 and the central axis 190 of the moving scroll is too far, then under the action of centrifugal force, more lubricating oil will enter the oil supply path 121 through the oil inlet 124, resulting in a larger amount of oil being sprayed out through the oil injection hole 150, which leads to 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 central axis 190 of the moving scroll is too close, then under the action of centrifugal force, less lubricating oil will enter the oil supply flow 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, the pump body structure 100 may optionally include a crankshaft 170, which is connected to a bearing bore 126. The crankshaft 170 is provided with an oil supply channel 171, which is connected to the bearing bore 126.

[0090] In this embodiment, the pump body structure 100 further includes a crankshaft 170, specifically, the crankshaft 170 is connected to the bearing bore 126. Optionally, the compressor 300 also includes a motor and a sub-frame, one end of the crankshaft 170 is connected to the bearing bore 126, and the other end is mounted on the sub-frame, the motor is connected to the crankshaft 170. Specifically, driven by the motor, the crankshaft 170 drives the driven scroll 120 to rotate relative to the stationary scroll 110 via the bearing portion 125, thereby compressing the gas in the compression chamber 140.

[0091] The crankshaft 170 is provided with an oil supply channel 171, which communicates with the bearing bore 126. Since the bearing bore 126 is connected to the oil inlet 124, the oil supply channel 171 is connected to the oil inlet 124 through the bearing bore 126. Specifically, lubricating oil enters the oil inlet 124 from the oil supply channel 171 via the bearing bore 126, flows through the oil supply path 121, and is intermittently sprayed into the intake 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 intake chamber 130, forming a sealing oil surface in the gap between the moving scroll 120 and the stationary scroll 110, thereby improving the sealing effect between the moving scroll 120 and the stationary scroll 110.

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

[0093] In this embodiment, the pump body structure 100 is further defined as including a sealing part 180. Specifically, the oil supply flow path 121 extends along the radial direction of the moving scroll 120, and one end of the oil supply flow path 121 away from the central axis 190 of the moving scroll passes through the outer wall of the moving scroll 120, which facilitates the processing and manufacturing of the oil supply flow path 121 and helps to reduce the production cost of the compressor 300.

[0094] A sealing part 180 is provided at one end of the oil supply path 121 away from the central axis 190 of the moving scroll to seal and prevent lubricating oil from leaking at that point.

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

[0096] According to a second aspect of the present invention, a compressor 300 is provided, including the 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 repeated here.

[0097] Optionally, such as Figure 9 As shown, compressor 300 includes a scroll compressor. Specifically, the scroll compressor includes a housing and a scroll compressor assembly installed within the housing. The scroll compressor assembly includes a main frame, a stationary scroll plate (stationary scroll plate 110), a moving scroll plate (moving scroll plate 120), a crankshaft 170, a motor, and a secondary frame. The main frame is fixed to the upper part of the housing, and the stationary scroll plate and the moving scroll plate are installed on top of it. The stationary scroll plate and the moving scroll plate combine to form a scroll compression chamber (compression chamber 140).

[0098] The upper part of the crankshaft 170 passes through the bearing hole of the main frame, and the eccentric part of the upper part of the crankshaft 170 is inserted into the eccentric bearing hole (bearing hole 126) of the moving scroll plate. The lower part of the sub-frame is fixed inside the housing, and the sub-frame has a sub-frame bearing hole, through which the lower part of the crankshaft 170 passes. The bottom of the compressor is an oil sump, which stores lubricating oil. The lower end of the crankshaft is equipped with an upper oil plate, which is immersed in the lubricating oil.

[0099] like Figure 8 As shown, an oil supply passage is provided inside the end plate of the moving scroll plate. The oil supply passage includes an oil inlet hole 124, an oil injection hole 150, and a drainage channel (oil supply path 121). The oil inlet hole 124 and the oil injection hole 150 are respectively located on both sides of the moving scroll end plate. The oil inlet hole 124 is located inside the bearing hole of the moving scroll plate, and the oil injection hole 150 is located on the scroll tooth (moving scroll tooth 122) side of the end plate. The drainage path is located in the radial direction of the moving scroll 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 oil hole of the moving scroll, and then connects with the pump body suction chamber 130. The lubricating oil is then replenished to the compression chamber 140 to improve the oil sealing capability.

[0101] Figure 2 and Figure 3 To activate inhalation, Figure 4 and Figure 5 This is the middle stage of inhalation. Figure 6 and Figure 7 During the final stage of intake, as the crankshaft 170 rotates, the eccentric part of the crankshaft 170 drives the moving scroll 120 to rotate linearly. The oil injection hole 150 on the moving scroll 120 is periodically and intermittently connected to the pump body intake chamber 130 to complete the intermittent oil replenishment action. When the pump body starts to intake, the moving scroll sprays oil; at the end of the intake stage, the oil spraying stops, thereby controlling the amount of lubricating oil entering the compression chamber 140. While improving the sealing effect between the moving scroll 120 and the stationary scroll 110, it also achieves the effect of suppressing the increase of oil discharge rate, significantly improving the energy efficiency of the compressor 300.

[0102] According to a third aspect of the present invention, a refrigeration device is provided, comprising a pump body structure 100 or a compressor 300 as provided in any of the above embodiments, and thus possessing all the beneficial technical effects of the pump body structure 100 or the compressor 300, which will not be elaborated further here.

[0103] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0104] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above 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 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. 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 pump body structure, characterized in that, include: A stationary volute disk, wherein the stationary volute disk includes stationary volute teeth; The moving scroll plate forms an intake chamber and a compression chamber with the stationary scroll plate. The intake chamber and the compression chamber are connected. The moving scroll plate is provided with an oil supply flow path. An injection port is located on the moving volute and is connected to the oil supply path. Based on the movement of the moving volute relative to the stationary volute, the stationary volute tooth can open or close the injection port so that the injection port is intermittently connected to the intake chamber.

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

3. The pump body structure according to claim 1, characterized in that, The moving scroll includes moving scroll teeth, and the moving scroll teeth include tooth ends that are away from the central axis of the moving scroll. During one revolution of the moving vortex, the moving vortex can move from a first position to a second position. When the moving vortex is in the first position, the tooth tip is in contact with the stationary vortex tooth, and the stationary vortex tooth covers the injection hole, cutting off the injection hole from the air intake chamber. When the moving vortex is in the second position, the tooth tip is separated from the stationary vortex tooth, at least part of the injection hole is offset from the stationary vortex tooth, and the injection hole communicates with the air intake chamber.

4. The pump body structure according to claim 3, characterized in that, During one revolution of the moving scroll, the moving scroll can also move to a third position, the second position being located between the first position and the third position. Based on the moving scroll being located at the third position, the stationary scroll tooth covers the oil injection hole. Wherein, based on the fact that the moving volute is located in the third position, there is a gap between the tooth tip and the stationary volute tooth.

5. The pump body structure according to claim 3, characterized in that, During one revolution of the moving volute, from entering the second position to leaving the second position, the rotation angle α of the moving volute relative to the stationary volute satisfies 180°≤α≤310°.

6. The pump body structure according to any one of claims 1 to 5, characterized in that, The moving scroll is also provided with an oil inlet hole, which is connected to the oil supply path; Wherein, along the radial direction of the moving scroll, the injection hole is located outside the oil inlet hole.

7. The pump body structure according to claim 6, characterized in that, Along the axial direction of the moving scroll, the oil inlet and the oil injection port are located on both sides of the oil supply path.

8. The pump body structure according to claim 6, characterized in that, The moving scroll is provided with a bearing part on the side away from the compression chamber, and the bearing part is provided with a bearing hole, which is connected to the oil inlet hole; The distance L between the central axis of the oil inlet hole and the central axis of the moving scroll in the radial direction of the moving scroll, and the diameter c of the bearing hole, satisfy the condition 0.25c≤L≤0.45c.

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

10. The pump body structure according to any one of claims 1 to 5, characterized in that, The oil supply path extends radially along the moving scroll, and one end of the oil supply path away from the central axis of the moving scroll penetrates the outer wall of the moving scroll; the pump body structure further includes: The sealing part is located at one end of the oil supply path away from the central axis of the moving scroll.

11. A compressor, characterized in that, Includes the pump body structure as described in any one of claims 1 to 10.

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

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