Pump body assembly, compressor and refrigeration equipment

Abstract

The utility model discloses a pump body assembly and compressor relates to compressor technical field, wherein the pump body assembly includes cylinder, slip sheet and component, cylinder is provided with compression chamber, the lateral wall of compression chamber is provided with slip sheet groove, slip sheet is slideably provided in slip sheet groove so as to enter or exit compression chamber, the component is provided in cylinder, and the slip sheet is provided with the slip sheet groove. The part is one of an upper flange, a lower flange or a partition plate, at least one groove is formed in the face, facing the sliding piece, of the part, the projection in the axial direction of the air cylinder, the sliding piece groove and at least part of the groove coincide, the contact area between the end face of the sliding piece and the part can be reduced by arranging the groove, and therefore the friction force borne by the sliding piece is reduced; the energy efficiency of the compressor can be improved.

Description

Technical Field

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

[0002] The rotor compressor is composed of an upper cover, a lower cover, a housing assembly, a pump assembly, a liquid distributor, etc. The pump assembly includes a crankshaft, an upper flange, a cylinder, a roller, a vane, a lower flange, etc. The cylinder is provided with a vane groove, in which the vane slides, and the vane reciprocates in the vane groove along with the roller.

[0003] Taking a single-cylinder pump assembly as an example, the upper side of the cylinder is connected to the upper flange, the lower side of the cylinder is connected to the lower flange, the upper end face of the vane is in contact with the upper flange, and the lower end face of the vane is in contact with the lower flange. During the movement of the vane, the upper end face of the vane is in sliding friction with the side of the upper flange facing the vane, and the lower end face of the vane is in sliding friction with the side of the lower flange facing the vane. During the sliding process of the vane, the vane is subjected to a large friction force, which seriously affects the energy efficiency of the compressor. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a pump body assembly, which can reduce the friction force on the sliding vane, thereby improving the energy efficiency of the compressor.

[0005] The utility model also provides a compressor having the pump body assembly.

[0006] The utility model also provides a refrigeration device having the compressor.

[0007] According to the pump body assembly of the first aspect of the utility model, the pump body assembly includes a cylinder, a slide and a component, the cylinder is provided with a compression chamber, the side wall of the compression chamber is provided with a slide groove, the slide can be slidably arranged in the slide groove to enter or exit the compression chamber, the component is arranged in the cylinder, the component is one of the upper flange, the lower flange or the partition, the component is matched with the end face of the slide, and the component is provided with at least one groove on a side facing the slide, and along the axial projection of the cylinder, the slide groove and the groove at least partially overlap.

[0008] The pump assembly according to the embodiment of the utility model has at least the following beneficial effects:

[0009] When the pump body assembly is working, the vane slides back and forth in the vane groove, and the end face of the vane blocks at least part of the groove, so that the end face of the vane does not completely contact the component, which can reduce the contact area between the end face of the vane and the component, thereby reducing the friction force on the vane and improving the energy efficiency of the compressor.

[0010] According to some embodiments of the present invention, the end surface of the slide blocks part of the groove, and the area blocked by the groove is C 1 , the cross-sectional area of ​​the groove is S 1 , satisfying: 0.4≤C 1 / S 1 ≤0.8.

[0011] According to some embodiments of the present utility model, the component is an upper flange, and the upper flange cooperates with the upper end surface of the slide;

[0012] Alternatively, the component is a lower flange, and the lower flange cooperates with the lower end surface of the slide;

[0013] Alternatively, the component is a partition, and the groove is provided on the upper surface of the partition, and / or the groove is provided on the lower surface of the partition.

[0014] According to some embodiments of the utility model, the components include a first component and a second component, the first component cooperates with the upper end surface of the slide, the second component cooperates with the lower end surface of the slide, the first component is provided with the groove on a side facing the upper end surface of the slide, and the second component is provided with the groove on a side facing the lower end surface of the slide.

[0015] According to some embodiments of the present invention, the width of the groove is B 1 , the width of the slide is B 2 , meet: 2B 1 ≥B 2 .

[0016] According to some embodiments of the present invention, along the width direction of the sliding sheet, the groove and the sliding sheet are staggered.

[0017] According to some embodiments of the utility model, the side wall of the sliding vane groove is provided with an oil storage groove, and the oil storage groove runs through the axial ends of the cylinder and is connected with the groove.

[0018] According to some embodiments of the present invention, in a cross section perpendicular to the axial direction of the compression chamber, the cross section area of ​​the groove is S 1 , the cross-sectional area of ​​the oil storage tank is S 2 , satisfy: S 1 >S 2

[0019] According to some embodiments of the present utility model, the groove is a waist-shaped groove, and the cross-section of the oil storage tank is a trapezoidal structure.

[0020] According to some embodiments of the present invention, a crankshaft is further included. The crankshaft includes a main shaft and an eccentric shaft. The eccentric shaft is arranged on the main shaft and eccentrically arranged with the main shaft. The shaft diameter of the main shaft is D 1 , the diameter of the eccentric shaft is D 2 , satisfied: D 1 / D 2 ≥0.64.

[0021] The compressor according to the second embodiment of the utility model comprises the pump body assembly described in the above embodiment.

[0022] The compressor according to the embodiment of the utility model has at least the following beneficial effects:

[0023] The pump body assembly of the first aspect embodiment is adopted. When the pump body assembly is working, the vane slides back and forth in the vane groove. By providing a groove on the component that can cooperate with the end face of the vane, the contact area between the vane and the component can be reduced, thereby reducing the friction force on the vane, and improving the energy efficiency of the compressor. At the same time, since the end face of the vane blocks part of the groove, the end face of the vane is in contact with the component at each position in the length direction, preventing the vane from arching and deforming at the position where the groove of the component is located.

[0024] The refrigeration device according to the embodiment of the third aspect of the utility model comprises the compressor described in the above embodiment.

[0025] The refrigeration device according to the embodiment of the utility model has at least the following beneficial effects:

[0026] In the compressor using the second aspect of the embodiment, when the compressor is powered on, the pump body assembly works, and the vane slides back and forth in the vane groove. By providing a groove on the component that can cooperate with the end face of the vane, the contact area between the vane and the component can be reduced, thereby reducing the friction force on the vane, thereby improving the energy efficiency of the compressor. At the same time, since the end face of the vane blocks part of the groove, the end face of the vane is in contact with the component at each position in the length direction, thereby preventing the vane from being deformed by an arch at the position where the groove of the component is located.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0029] Figure 1 This is a schematic structural diagram of a pump assembly according to an embodiment of the utility model;

[0030] Figure 2This is an exploded schematic diagram of a pump assembly according to an embodiment of the utility model;

[0031] Figure 3 A top view of a cylinder of a pump assembly according to an embodiment of the utility model;

[0032] Figure 4 It is a schematic diagram of the assembly of the cylinder, the sliding plate and the upper flange of the pump body assembly of one embodiment of the utility model;

[0033] Figure 5 for Figure 4 A partial enlarged view of part A;

[0034] Figure 6 This is a schematic structural diagram of a pump body assembly according to an embodiment of the utility model when an upper flange is provided with a groove;

[0035] Figure 7 It is a structural schematic diagram of the upper flange of the pump body assembly of one embodiment of the utility model from another perspective;

[0036] Figure 8 It is a structural schematic diagram of a lift limiter of a pump assembly according to an embodiment of the utility model;

[0037] Fig. 9 This is a schematic structural diagram of a valve plate of a pump body assembly according to an embodiment of the utility model;

[0038] Fig.10 This is a schematic structural diagram of a crankshaft of a pump assembly according to an embodiment of the utility model;

[0039] Fig.11 This is a schematic structural diagram of a pump body assembly according to an embodiment of the utility model when a groove is provided on the lower flange;

[0040] Fig.12 This is a schematic structural diagram of a pump body assembly according to an embodiment of the utility model when a partition plate is provided with a groove.

[0041] Figure Number:

[0042] Cylinder 100, compression chamber 110, slide groove 120, oil storage tank 130, slide 200, upper flange 300, exhaust hole 310, valve plate groove 320, lower flange 400, partition 500, valve plate 600, lift limiter 700, through hole 710, crankshaft 800, main shaft 810, eccentric shaft 820, groove 900. DETAILED DESCRIPTION

[0043] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0044] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0046] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0047] As mentioned above, in the related art, taking a single-cylinder pump body assembly as an example, the upper side of the cylinder is connected to the upper flange, the lower side of the cylinder is connected to the lower flange, the upper end face of the slide is in contact with the upper flange, and the lower end face of the slide is in contact with the lower flange. During the movement of the slide, the upper end face of the slide slides and rubs against the side of the upper flange facing the slide, and the lower end face of the slide slides and rubs against the side of the lower flange facing the slide. During the sliding of the slide, the slide is subjected to a large friction force, which seriously affects the energy efficiency of the compressor. Based on this, the utility model can reduce the friction force on the slide by providing a groove on the component that can cooperate with the end face of the slide, thereby improving the energy efficiency of the compressor.

[0048] Reference Figure 1 , Figure 2 , Figure 1 This is a schematic diagram of the structure of a pump body assembly configured as a double-cylinder pump body assembly according to an embodiment of the utility model. Figure 2 This is an exploded schematic diagram of a pump body assembly configured as a double-cylinder pump body assembly according to an embodiment of the utility model. Figure 1 and Figure 2 The upper silencer is omitted. Figure 1The pump body assembly includes a crankshaft 800, an upper flange 300, a lower flange 400, a partition 500, two cylinders 100 and two slides 200. The upper flange 300, the cylinder 100, the partition 500, the cylinder 100 and the lower flange 400 are connected in sequence. The partition 500 is sandwiched between two adjacent cylinders 100. The crankshaft 800 includes a main shaft 810 and two eccentric shafts 820. The two eccentric shafts 820 are symmetrically arranged. The two eccentric shafts 820 can be rotatably accommodated in the corresponding pressure In the contraction cavity 110, one end of the main shaft 810 away from the eccentric shaft 820 is used to connect with the rotor of the compressor motor, the upper slide 200 can be slidably arranged in the slide groove 120 of the upper cylinder 100, the upper slide 200 cooperates with the upper flange 300 and the partition 500, and the lower slide 200 can be slidably arranged in the slide groove 120 of the lower cylinder 100, and the lower slide 200 cooperates with the lower flange 400 and the partition 500.

[0049] Reference Figure 4 , Figure 6 , Figure 4 This is a schematic diagram of the assembly of the cylinder 100, the slide 200 and the upper flange 300 of the pump assembly according to an embodiment of the utility model. Figure 6 This is a schematic diagram of the structure of the upper flange 300 of the pump assembly of an embodiment of the utility model. Figure 6 As shown, a groove 900 is provided on a side of the upper flange 300 facing the cylinder 100, and the upper flange 300 is provided with an exhaust hole 310, the exhaust hole 310 penetrates the upper flange 300 along the axial direction of the compression chamber 110, and the groove 900 is arranged along the circumference of the exhaust hole 310, for example Figure 4 As shown, the notch of the groove 900 is partially blocked by the upper end surface of the sliding vane 200. On the one hand, the contact area between the upper end surface of the sliding vane 200 and the upper flange can be reduced, thereby reducing the friction force on the sliding vane 200, which can improve the energy efficiency of the compressor. On the other hand, during the sliding process of the sliding vane 200, each position of the upper end surface of the sliding vane 200 in the length direction abuts against the upper flange 300, so that the upper end surface of the sliding vane 200 is subjected to uniform force, which can prevent the sliding vane 200 from being deformed by an arch at the position of the groove 900 of the component. The arch deformation refers to the bending deformation of the sliding vane 200 in the direction close to the bottom wall of the groove 900.

[0050] For example Figure 4As shown, there is a gap between the side of the slide 200 close to the groove 900 and the corresponding side wall of the slide groove 120, and the gap is located directly below the groove 900, and the gap is connected to the groove 900. When the pump body assembly is working, the lubricating oil in the main shaft 810 is thrown out and flows into the groove 900 under the centrifugal action. During the sliding process of the slide 200, on the one hand, part of the lubricating oil in the groove 900 can penetrate between the upper end surface of the slide 800 and the upper flange 300 to avoid the upper end surface of the slide 200 directly rubbing against the upper flange 300, which can reduce the wear degree of the upper end surface of the slide 200. On the other hand, another part of the lubricating oil in the groove 900 can flow downward into the above-mentioned gap under the action of its own gravity to avoid the side of the slide 200 directly rubbing against the side wall of the slide groove 120, which can reduce the wear degree of the side of the slide 200.

[0051] It should be noted that when the end surface of the slide 200 blocks part of the groove 900, the area of ​​the groove 900 blocked is S 1 , the cross-sectional area of ​​the groove 900 is S 1 , satisfying: 0.4≤C 1 / S 1 ≤0.8.C 1 / S 1 It can be 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8.

[0052] When C 1 / S 1 When the ratio is less than 0.4, the wear degree of the upper end surface of the sliding vane 200 is reduced by about 5%, and the wear degree of the side surface of the sliding vane 200 is reduced by 10% to 12%. The reduction in the wear degree of the side surface of the sliding vane 200 is better than the reduction in the wear degree of the upper end surface of the sliding vane 200. This is because, on the one hand, the area blocked by the groove 900 is relatively small, resulting in a relatively large contact area between the upper end surface of the sliding vane 200 and the upper flange 300, the friction force on the sliding vane 200 is increased, and the reduction in the wear degree of the upper end surface of the sliding vane 200 is not obvious enough. On the other hand, the area blocked by the groove 900 is relatively small, that is, the cross-section of the groove 900 through which the lubricating oil can flow is relatively large, and the lubricating oil can penetrate into the above-mentioned gap in time, which can significantly reduce the friction loss of the side surface of the sliding vane 200.

[0053] When C 1 / S 1When the ratio is greater than 0.8, the wear degree of the end face of the vane 200 is reduced by 8% to 10%, but the wear degree of the side face of the vane 200 is reduced by about 5%, and the reduction in the wear degree of the upper end face of the vane 200 is better than the reduction in the wear degree of the side face of the vane 200. This is because, on the one hand, the area blocked by the groove 900 is relatively large, which makes the contact area between the upper end face of the vane 200 and the upper flange 300 relatively small, the friction force on the vane 200 is reduced, and the wear degree of the upper end face of the vane 200 is significantly reduced. On the other hand, the width of the cross section of the groove 900 through which the lubricating oil can flow is smaller than the width of the above-mentioned gap, resulting in the oil flow rate of the groove 900 being lower than the oil flow rate of the above-mentioned gap, the lubricating oil cannot penetrate into the above-mentioned gap in time, and the reduction in the wear degree of the side face of the vane 200 is not obvious enough;

[0054] When 0.4≤C 1 / S 1 When the angle ≤0.8, the wear degree of the upper end surface and the side surface of the sliding vane 200 are reduced by 10% to 12%, and the reduction range of the wear degree of the upper end surface of the sliding vane 200 is close to the reduction range of the wear degree of the side surface of the sliding vane 200. This is because, on the one hand, the area blocked by the groove 900 is relatively large, so that the contact area between the upper end surface of the sliding vane 200 and the upper flange 300 is relatively small, the friction force on the sliding vane 200 is reduced, and the wear degree of the upper end surface of the sliding vane 200 is significantly reduced. On the other hand, the area blocked by the groove 900 is relatively small, that is, the cross-section of the groove 900 through which the lubricating oil can flow is relatively small. However, since the width of the above-mentioned gap is also relatively small, the width of the cross-section of the groove 900 through which the lubricating oil can flow matches the width of the above-mentioned gap, so that the oil flow rate of the groove 900 can be close to the oil flow rate of the above-mentioned gap, and the lubricating oil can also penetrate into the above-mentioned gap in time, which can significantly reduce the friction loss of the side surface of the sliding vane 200.

[0055] As another embodiment, the groove 900 may also be completely blocked by the upper end surface of the slide 200. The width of the groove 900 is smaller than the width of the slide 200. Along the width direction of the slide 200, the groove 900 may be located in the middle of the slide groove 120. The groove 900 may also be located to the left of the middle or to the right of the middle of the slide groove 120.

[0056] It should be noted that, for example Figure 4 As shown, the projection of the groove 900 in the axial direction of the compression chamber 110 does not overlap with the compression chamber 110, which can prevent the high-pressure airflow in the compression chamber 110 from directly entering the groove 900. The excessive air pressure in the groove 900 hinders the lubricating oil on the crankshaft 800 from flowing into the groove 900, causing the end face of the slide 200 to increase in wear, thereby affecting the service life of the slide 200.

[0057] It should be pointed out that the length of the slide 200 is less than the length of the groove 900, and the length of the slide 200 refers to the size of the slide 200 in the sliding direction. The position where the slide 200 enters the compression chamber 110 the longest distance is the first position, and the position where the slide 200 retreats into the slide groove 120 is the second position. When the pump body assembly is working, the slide 200 reciprocates between the first position and the second position. When the slide 200 is in the first position, the compression chamber 110 is divided into a high-pressure chamber and a low-pressure chamber by the slide 200, and the periphery of the groove 900 on both sides of the length direction abuts against the end face of the slide 200. When the slide 200 is in the second position, the compression chamber 110 is in a low-pressure state, and the periphery of the groove 900 on both sides of the length direction also abuts against the end face of the slide 200, which can prevent the slide 200 from being deformed during the sliding process.

[0058] Reference Fig.11 , Fig.11 The schematic diagram of the structure of the pump body assembly of an embodiment of the utility model is provided with a groove 900 in the lower flange 400. The groove 900 is provided on the side of the lower flange 400 facing the cylinder 100, and the lower flange 400 is provided with an exhaust hole 310, the exhaust hole 310 penetrates the lower flange 400 along the axial direction of the compression chamber 110, and the groove 900 is arranged along the circumferential direction of the exhaust hole 310. During the sliding process of the sliding vane 200, the notch of the groove 900 is completely blocked by the lower end surface of the sliding vane 200, or the notch of the groove 900 is partially blocked by the lower end surface of the sliding vane 200. When the notch portion of the groove 900 is blocked by the lower end surface of the slide 200, the lower end of the above-mentioned gap is connected to the groove 900, and the lubricating oil in the above-mentioned gap can enter the groove 900 under the action of its own gravity. During the sliding process of the slide 200, the lubricating oil in the groove 900 can penetrate into between the lower end surface of the slide 200 and the lower flange 400, which can reduce the wear of the lower end surface of the slide 200, thereby improving the service life of the compressor and the energy efficiency of the compressor.

[0059] Reference Fig.12 , Fig.12The schematic diagram of the structure when the upper surface of the partition 500 of the pump body assembly of an embodiment of the utility model is provided with a groove 900. During the sliding process of the upper slide 200, the groove 900 is completely blocked by the lower end surface of the upper slide 200, or the notch of the groove 900 is partially blocked by the lower end surface of the upper slide 200. As another embodiment, the groove 900 can also be set on the lower surface of the partition 500, and the notch of the groove 900 is completely blocked by the upper end surface of the lower slide 200, or the notch of the groove 900 is partially blocked by the upper end surface of the lower slide 200. When the upper surface and the lower surface of the partition 500 are provided with grooves 900 at the same time, the groove 900 located on the upper surface of the partition 500 is partially blocked by the lower end surface of the upper slide 200, and / or the groove 900 located on the lower surface of the partition 500 is partially blocked by the upper end surface of the lower slide 200.

[0060] When the component includes a first component and a second component, the first component is configured as one of the upper flange 300, the lower flange 400 and the partition 500, and the second component is configured as the other of the upper flange 300, the lower flange 400 and the partition 500. The combination of the first component and the second component specifically includes the following cases:

[0061] The first component is configured as an upper flange 300, and a groove 900 is provided on the upper flange 300; the second component is configured as a partition plate 500, and a groove 900 is provided on the upper surface of the partition plate 500;

[0062] The first component is configured as an upper flange 300, and a groove 900 is provided on the upper flange 300; the second component is configured as a partition plate 500, and a groove 900 is provided on the lower surface of the partition plate 500;

[0063] The first component is configured as a lower flange 400, and a groove 900 is provided on the lower flange 400; the second component is configured as a partition plate 500, and a groove 900 is provided on the upper surface of the partition plate 500;

[0064] The first component is configured as a lower flange 400, and a groove 900 is provided on the lower flange 400; the second component is configured as a partition 500, and a groove 900 is provided on the lower surface of the partition 500;

[0065] For example, when the first component is configured as the upper flange 300, the second component is configured as the partition 500, and the upper surface of the partition 500 is provided with a groove 900, the upper end surface of the slide 200 located above does not completely cover the groove 900 on the upper flange 300, and the lower end surface of the slide 200 located above does not completely cover the groove 900 on the upper surface of the partition 500. The combination of the first component and the second component can refer to the above example, and will not be repeated here.

[0066] When the components include the first component, the second component and the third component, the first component is configured as the upper flange 300, the second component is configured as the lower flange 400, and the third component is configured as the partition 500. The upper flange 300, the lower flange 400 and the partition 500 are all provided with grooves 900 in the areas corresponding to the sliding vane grooves 120. When the sliding vane 200 located at the top slides, the upper end surface of the sliding vane 200 located at the top does not completely block the groove 900 on the upper flange 300, and the lower end surface of the sliding vane 200 located at the top does not completely block the groove 900 on the upper surface of the partition 500. When the sliding vane 200 located at the bottom slides, the upper end surface of the sliding vane 200 located at the bottom does not completely block the groove 900 on the lower surface of the partition 500, and the lower end surface of the sliding vane 200 located at the bottom does not completely block the groove 900 on the lower flange 400, which can reduce the friction force on the sliding vane 200, thereby improving the energy efficiency of the compressor. Alternatively, a groove 900 may be provided on one of the upper surface or the lower surface of the partition plate 500 , which can also reduce the friction force on the sliding sheet 200 .

[0067] The width of the groove 900 of the pump body assembly of the present utility model is B 1 , the width of the slide 200 is B 2 , B 1 , B 2 Satisfaction: 2B 1 ≥B 2 , which can reduce the contact area between the end surface of the sliding vane 200 and the component, and can reduce the friction force on the sliding vane 200, so that the wear degree of the sliding vane 200 is slight wear.

[0068] Specifically, the larger the width of the groove 900 is, the smaller the contact area between the end surface of the slide 200 and the component is. 1 <B 2 , the contact area between the end surface of the sliding plate 200 and the component is too large, and the friction force on the sliding plate 200 cannot be effectively reduced. 1 , B 2 Configured as 2B 1 ≥B 2 , which can reduce the friction force on the sliding plate 200, so that the wear degree of the sliding plate 200 is slight wear.

[0069] It should be pointed out that along the width direction of the slide 200, the groove 900 and the slide 200 are staggered, that is, along the axial direction of the compression chamber 110, the projection of the slide 200 partially overlaps with the projection of the groove 900, so that the component can abut against the end face of the slide 200, which can reduce the deformation of the slide 200.

[0070] It should be noted that the width of the groove 900 refers to the dimension of the groove 900 in the width direction of the sliding plate groove 120. Figure 3 As shown, Figure 3 This is a top view of a cylinder 100 of a pump assembly according to an embodiment of the present invention. The width direction of the sliding vane groove 120 refers to a direction perpendicular to the sliding direction of the sliding vane 200 .

[0071] Reference Figure 3 , Figure 3 This is a top view of a cylinder 100 of a pump body assembly according to an embodiment of the utility model. An oil storage groove 130 is provided on one side of the width direction of the vane groove 120 of the cylinder 100 of the utility model embodiment. The oil storage groove 130 penetrates the cylinder 100 along the axial direction of the compression chamber 110. The vane groove 120 and the oil storage groove 130 can be processed simultaneously by machining to improve the processing efficiency of the cylinder 100.

[0072] For example Figure 4 As shown, the oil storage tank 130 is connected to the groove 900, so that the lubricating oil in the groove 900 can flow into the oil storage tank 130, and the lubricating oil in the oil storage tank 130 can penetrate between the side of the sliding vane 200 and the side wall of the sliding vane groove 120 to lubricate the sliding vane 200, thereby reducing the friction force on the sliding vane 200.

[0073] Specifically, the oil storage tank 130 and the groove 900 are located on the same side of the width direction of the slide 200, and the oil storage tank 130 is extended along the axial direction of the compression chamber 110. The oil storage tank 130 passes through the upper and lower sides of the cylinder 100 along the axial direction of the compression chamber 110. When the groove 900 is set on the upper flange 300, the lubricating oil in the groove 900 flows downward into the oil storage tank 130, and the lubricating oil can flow from the upper end of the side of the slide 200 to the lower end of the side of the slide 200. When the slide 200 slides in the slide groove 120, the lubricating oil can be attached to each position of the side of the slide 200, which can lubricate the slide 200, thereby reducing the friction force on the slide 200. In addition, the processing method of the groove 900 and the slide groove 120 is not limited, for example, powder metallurgy processing, die casting, etc. can be used, which will not be repeated here. As another embodiment, the oil storage tank 130 may also penetrate the upper and lower sides of the cylinder 100 in a direction inclined with respect to the axial direction of the compression chamber 110 .

[0074] It is understandable that when the pump body assembly of the embodiment of the utility model is configured as a single-cylinder pump body assembly, in the case where both the upper flange 300 and the lower flange 400 are provided with a groove 900, the groove 900 on the upper flange 300 can pass through the oil storage tank 130 and the groove 900 on the lower flange 400, and the lubricating oil in the groove 900 on the upper flange 300 can pass through the oil storage tank 130 and flow into the groove 900 on the lower flange 400, which can effectively lubricate the upper end surface, side surface and lower end surface of the sheet 200, thereby reducing the wear of the sliding sheet 200. Alternatively, one of the groove 900 on the upper flange 300 and the groove 900 on the lower flange 400 is connected to the oil storage tank 130, which will not be described in detail here.

[0075] Reference Figure 3 , Figure 5 , Figure 5 for Figure 4 The partial enlarged view of the A part in the pump body assembly of the embodiment of the utility model, along the direction perpendicular to the axial direction of the compression chamber 110, the cross-sectional area of ​​the groove 900 is S 1 The cross-sectional area of ​​the oil storage tank 130 is S 2 , S 1 , S 2 Satisfaction: S 1 >S 2 , which can improve the oil flow efficiency of the oil storage tank 130, thereby improving the lubrication effect of the sliding vane 200.

[0076] Specifically, the groove 900 is connected to the oil storage tank 130 to form an oil passage. When the lubricating oil in the groove 900 flows into the oil storage tank 130, the cross-section of the oil passage suddenly shrinks, and the flow speed of the lubricating oil is accelerated, which can improve the oil flow efficiency of the oil storage tank 130, thereby improving the lubrication effect of the sliding vane 200.

[0077] It should be pointed out that when S 1 =S 2 When S 1 =S 2 As the benchmark, when S 1 >S 2 When S 1 <S 2 When S is , the oil flow efficiency of the oil storage tank 130 decreases rapidly with a slope of -1.8. 1 >S 2 , so as to improve the oil flow efficiency of the oil storage tank 130.

[0078] In order to reduce the contact area between the upper end surface of the sliding sheet 200 and the upper flange 300 as much as possible and improve the processing efficiency of the groove 900, the groove 900 is set as a waist-shaped groove, for example Figure 5 As shown, the length direction of the groove 900 is consistent with the sliding direction of the slide 200. In the length direction of the slide 200, the length of the overlapping area between the upper end surface of the slide 200 and the groove 900 is maximized, which can reduce the contact area between the upper end surface of the slide 200 and the upper flange 300 while reducing the width of the groove 900. Moreover, the reduction in the width of the groove 900 can reduce the cross-sectional area of ​​the groove 900, thereby reducing the moving distance of the rotating tool of the machining equipment, and improving the machining efficiency of the groove 900.

[0079] In order to facilitate the lubricating oil in the oil storage tank 130 to flow into the above-mentioned gap, the cross section of the oil storage tank 130 perpendicular to the axial direction of the compression chamber 110 is set to a trapezoidal structure, for example Figure 3 As shown, along the sliding direction of the vane 200, the distance between the side wall of the oil storage tank 130 and the side surface of the vane 200 gradually decreases, which can expand the width of the oil inlet cross section of the above-mentioned gap, which is equivalent to configuring an oil hopper for the above-mentioned gap. At the same time, the side wall of the oil storage tank 130 can guide the lubricating oil to flow into the above-mentioned gap, and the lubricating oil can be replenished for the above-mentioned gap in time, which can reduce the wear of the side surface of the vane 200.

[0080] For example Figure 5 As shown, the maximum length of the groove 900 is L 1 , the diameter of the semicircle of the groove 900 is B 1 , S 1 =B 1 *(L 1 -B 1 )+πB 1 2 / 4, for example Figure 3 As shown, the depth of the oil storage tank 130 is h 1 , the maximum width of the oil storage tank 130 is L 2 , the minimum width of the oil storage tank 130 is L 3 , S 2 =h 1 *(L 2 +L 3 ) / 2, when S 1 >S 2 When (B 1 *(L 1 -B 1 )+πB 1 2 / 4)>h 1 *(L 2 +L 3 ) / 2, which can improve the oil flow efficiency of the oil storage tank 130, thereby improving the lubrication effect of the sliding vane.

[0081] It should be noted that the cross section of the groove 900 can also be configured as a square, a rectangle, a circle or an ellipse, etc., and the cross section of the oil storage tank 130 can be configured as a semicircle, a square, a rectangle or a cone, etc., which will not be repeated here. As another embodiment, when the cross section of the groove 900 is a circular structure, S 1 =πB 1 2 / 4.

[0082] It can be understood that when there are multiple grooves 900, the multiple grooves 900 are arranged side by side and spaced apart along the sliding direction of the slide 200, the total cross-sectional area of ​​the groove 900 is the sum of the cross-sectional areas of the multiple grooves 900, and the total obscured area of ​​the groove 900 is the sum of the obscured areas of the multiple grooves 900.

[0083] Reference Figure 7 , Fig. 9 , Figure 7 for Figure 6 The schematic diagram of the structure after the upper flange 300 is turned over at a certain angle, Fig. 9 This is a structural schematic diagram of the valve plate 600 of the pump body assembly of an embodiment of the utility model. The tail of the valve plate 600 and the tail of the lift limiter 700 are fixed in the valve plate groove 320 by rivets. When the pump body assembly is exhausted, the head of the valve plate 600 is away from the bottom wall of the valve plate groove 320 so that the exhaust hole 310 is in an open state. When the pump body assembly is inhaled, the head of the valve plate 600 is in contact with the bottom wall of the valve plate groove 320 so that the exhaust hole 310 is in a closed state.

[0084] To reduce the operating noise of the compressor, e.g. Figure 8 As shown, Figure 8 The schematic diagram of the structure of the lift limiter 700 of the pump body assembly of an embodiment of the utility model is shown in FIG. A through hole 710 is set at the head of the lift limiter 700. The through hole 710 penetrates the lift limiter 700 along the thickness direction of the lift limiter 700. The through hole 710 can change the fixed frequency point of the lift limiter 700. At the same time, the through hole 710 can also form a resonance chamber. When the valve plate 600 hits the lift limiter 700 at high speed, the through hole 710 can reduce the gas resistance of the valve plate 600 hitting the lift limiter 700, and the airflow can attenuate the vibration energy in the resonance chamber, which can reduce the operating noise of the compressor. As another embodiment, the lift limiter 700 can also be connected to the side wall of the valve plate groove 320 by welding. Among them, the welding method includes but is not limited to resistance welding, ultrasonic welding or laser welding.

[0085] It should be noted that the through hole 710 can be a waist-shaped hole, a round hole, a rectangular hole, a square hole or an elliptical hole, etc., and the through hole 710 can be set in the middle position of the head of the lift limiter 700, or in the left or right position of the middle of the lift limiter 700, which will not be repeated here.

[0086] It should be noted that the width of the middle portion of the valve plate 600 is L 4 , the maximum width of the head of the valve plate 600 is L 5 , L 4 , L 5 Satisfy: 0.3≤L 4 / L 5 ≤0.7, L 4 / L 5 The value of can be 0.3, 0.4, 0.5, 0.6, 0.7. By reducing the width of the middle part of the valve plate 600, the rigidity of the valve plate 600 can be reduced, so that the head of the valve plate 600 is easier to bend and deform, and the gas resistance when the valve plate 600 moves during the exhaust process can be reduced, and the energy loss of the exhaust can be reduced by 15% to 30%.

[0087] Reference Fig.10 , Fig.10 Schematic diagram of the structure of the crankshaft 800 of the pump assembly of an embodiment of the utility model. The crankshaft 800 of the utility model embodiment includes a main shaft 810 and an eccentric shaft 820 arranged at one end of the main shaft 810. The eccentric shaft 820 is configured with two eccentric shafts 820, which are symmetrically arranged. The shaft diameter of the main shaft 810 is D 1 , the diameter of the eccentric shaft 820 is D 2 , D 1 , D 2 Satisfaction: D 1 / D 2 ≥0.64, the axial diameter ratio of the main shaft 810 to the eccentric shaft 820 is larger, and the rigidity of the crankshaft 800 is also greater, which can make the dynamic balance coefficient smaller, so the vibration generated by the crankshaft 800 when rotating at high speed is also smaller, thereby improving the reliability of high-frequency operation of the compressor. For example, D 1 / D 2 It can be 0.64, 0.66, 0.68, 0.70, 0.72, 0.74, 0.76, 0.78, 0.80, etc.

[0088] The compressor of the second embodiment of the utility model comprises the pump body assembly of the above embodiment.

[0089] The compressor of the embodiment of the utility model adopts the pump body assembly of the embodiment of the first aspect. When the pump body assembly is working, the vane 200 slides back and forth in the vane groove 120. By providing a groove 900 on the component that can cooperate with the end face of the vane 200, the contact area between the vane 200 and the component can be reduced, thereby reducing the friction force on the vane 200, and improving the energy efficiency of the compressor. At the same time, since the end face of the vane 200 blocks part of the groove 900, each position of the end face of the vane 200 in the length direction is in contact with the component, preventing the vane 200 from being deformed by an arch at the position where the groove 900 of the component is located.

[0090] Since the compressor adopts all the technical solutions of the pump body assembly of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be described in detail here.

[0091] The refrigeration device of the embodiment of the third aspect of the utility model comprises the compressor of the above embodiment.

[0092] The refrigeration device of the embodiment of the utility model adopts the compressor of the embodiment of the second aspect. When the compressor is powered on, the pump body assembly works, and the vane 200 slides back and forth in the vane groove 120. By providing a groove 900 that can cooperate with the end face of the vane 200 on the component, the contact area between the vane 200 and the component can be reduced, thereby reducing the friction force on the vane 200, and improving the energy efficiency of the compressor. At the same time, since the end face of the vane 200 blocks part of the groove 900, each position of the end face of the vane 200 in the length direction is in contact with the component, preventing the vane 200 from being deformed by an arch at the position where the groove 900 of the component is located.

[0093] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A pump assembly, characterized in that: include: The cylinder is provided with a compression chamber, and the side wall of the compression chamber is provided with a sliding vane groove; A sliding vane, slidably disposed in the sliding vane slot to enter or exit the compression chamber; A component is connected to the cylinder, the component is one of an upper flange, a lower flange or a partition, and at least one groove is provided on a side of the component facing the slide, and along the axial projection of the cylinder, the slide groove and the groove at least partially overlap.

2. The pump assembly according to claim 1, characterized in that: When the sliding plate slides, the end surface of the sliding plate blocks part of the groove, the blocked area of ​​the groove is C1, and the cross-sectional area of ​​the groove is S1, which satisfies: 0.4≤C1 / S1≤0.

8.

3. The pump assembly according to claim 1, characterized in that: The component is an upper flange, and the upper flange cooperates with the upper end surface of the slide; Alternatively, the component is a lower flange, and the lower flange cooperates with the lower end surface of the slide; Alternatively, the component is a partition, and the groove is provided on the upper surface of the partition, and / or the groove is provided on the lower surface of the partition.

4. The pump assembly according to claim 1, characterized in that: The components include a first component and a second component, the first component cooperates with the upper end surface of the slide, the second component cooperates with the lower end surface of the slide, the first component is provided with the groove on a side facing the upper end surface of the slide, and the second component is provided with the groove on a side facing the lower end surface of the slide.

5. The pump assembly according to claim 1, characterized in that: The width of the groove is B1, and the width of the sliding sheet is B2, satisfying: 2B1≥B2.

6. The pump assembly according to claim 1, characterized in that: Along the width direction of the sliding sheet, the groove and the sliding sheet are staggered.

7. The pump assembly according to claim 1, characterized in that: An oil storage groove is provided on the side wall of the sliding vane groove, and the oil storage groove runs through the axial ends of the cylinder and is communicated with the groove.

8. The pump assembly according to claim 7, characterized in that: In a cross section perpendicular to the axial direction of the compression chamber, the cross-sectional area of ​​the groove is S1, and the cross-sectional area of ​​the oil storage groove is S2, satisfying: S1>S2.

9. The pump assembly according to claim 8, characterized in that: The groove is a waist-shaped groove, and the cross section of the oil storage tank is a trapezoidal structure.

10. The pump assembly according to claim 1, characterized in that: The pump body assembly also includes a crankshaft, which includes a main shaft and an eccentric shaft. The eccentric shaft is arranged on the main shaft and eccentrically arranged with the main shaft. The shaft diameter of the main shaft is D1, and the shaft diameter of the eccentric shaft is D2, satisfying: D1 / D2≥0.

64.

11. A compressor, characterized in that: A pump body assembly comprising any one of claims 1 to 10.

12. Refrigeration equipment, characterized in that: Comprising the compressor as claimed in claim 11.

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