Pump body assembly, compressor and heat exchange equipment

Abstract

The invention provides a pump body assembly, a compressor and heat exchange equipment. The pump body assembly comprises an air cylinder, the air cylinder is provided with a sliding piece groove, and the length of the sliding piece groove is l; at least one part of the crankshaft assembly is rotatably arranged in the air cylinder, and the eccentric distance of the crankshaft assembly is e; the roller is located in the air cylinder, the crankshaft assembly is sleeved with the roller, the roller rotates along with the crankshaft assembly, and the outer diameter of the roller is r; at least one part of the slip sheet is movably arranged in the slip sheet groove, a slip sheet head of the slip sheet is movably contacted with the roller, and the length of the slip sheet is L; and the length l of the sliding vane groove, the eccentric distance e of the crankshaft assembly, the outer diameter r of the roller and the length L of the sliding vane meet the formula of # imgabs0 #. The compressor pump body assembly solves the problem that in the prior art, the sliding vane of the compressor pump body assembly is prone to bending deformation in an air cylinder.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a pump body assembly, a compressor and a heat exchange device. Background Art

[0002] As the core component of air conditioners, compressors play an important role in refrigeration systems. When the rotary compressor is running, the vane is located in the cylinder vane slot and reciprocates against the roller. The vane is subjected to pressure differences in multiple directions. For example, the part of the vane that extends into the compression chamber is subjected to the pressure difference between the suction chamber and the exhaust chamber, and the inner and outer ends of the vane are subjected to the pressure difference between the roller and the spring elastic force. Under the action of these pressure differences, the vane will come into contact with the cylinder vane slot and bend and deform.

[0003] In the prior art, most of the vane tails are designed with grooves for fixing springs. The bending cross-sectional area of ​​the vane at the groove is reduced, and the bending stiffness is reduced. If this part contacts the cylinder vane groove, the vane bending deformation will increase, resulting in uneven operation of the vane. This phenomenon is reflected in the compressor as a whole, which is prone to a series of noise, performance and reliability problems such as low-frequency rattling sound, increased compressor power consumption, and wear on the side of the vane.

[0004] Therefore, in the prior art, there is a problem that the vane of the compressor pump assembly is prone to bending and deformation inside the cylinder. Summary of the invention

[0005] The main purpose of the present invention is to provide a pump body assembly, a compressor and a heat exchange device to solve the problem in the prior art that the vane of the compressor pump body assembly is prone to bending and deformation inside the cylinder.

[0006] In order to achieve the above-mentioned object, according to one aspect of the present invention, a pump body assembly is provided, comprising: a cylinder, the cylinder having a vane groove, and the length of the vane groove is l; a crankshaft assembly, at least a part of the crankshaft assembly is rotatably arranged inside the cylinder, and the eccentricity of the crankshaft assembly is e; a roller, the roller is located inside the cylinder, the roller is sleeved on the crankshaft assembly and rotates with the crankshaft assembly, and the outer diameter of the roller is r; a vane, at least a part of the vane is movably arranged in the vane groove, the vane head of the vane is in movably contact with the roller, and the length of the vane is L; the length l of the vane groove, the eccentricity e of the crankshaft assembly, the outer diameter r of the roller, and the length L of the vane satisfy the following conditions:

[0007] Furthermore, the center point of the cylinder is O, the center line of the vane groove is OH, and the line connecting the contact point between the roller and the inner wall of the cylinder and the center point of the cylinder is OT. When the end face of the tail of the vane is flush with the edge of the vane groove away from the roller, the angle between OH and OT is θ 1 , and θ 1Greater than 260°.

[0008] Furthermore, the tail of the sliding vane is provided with a tail groove, the depth of which is a times the length L of the sliding vane, 1>a>0, when the bottom of the tail groove is flush with the edge of the sliding vane groove away from the roller, the angle between OH and OT is θ 2 , and a satisfies:

[0009]

[0010] Furthermore, θ 1 With θ 2 Satisfy between: θ 2 -θ 1 ≤60°.

[0011] Further, the sliding tail of the sliding vane has at least one tail groove. When there are multiple tail grooves, the multiple tail grooves extend in the radial direction of the crankshaft assembly.

[0012] Further, the area of ​​the bottom of the tail groove is smaller than the opening area of ​​the tail groove.

[0013] Further, the tail groove is a step groove, and the tail groove includes at least one sinking section to form a step surface on the circumferential inner side wall of the tail groove.

[0014] According to another aspect of the present invention, a compressor is provided, comprising the above-mentioned pump body assembly.

[0015] Furthermore, the compressor is a single-cylinder compressor or a multi-cylinder compressor.

[0016] According to another aspect of the present invention, a heat exchange device is provided, comprising the above-mentioned compressor.

[0017] Applying the technical solution of the present invention, the pump body assembly in the present application includes a cylinder, a crankshaft assembly, a roller and a vane. The cylinder has a vane groove, and the length of the vane groove is l; at least a part of the crankshaft assembly is rotatably arranged inside the cylinder, and the eccentricity of the crankshaft assembly is e; the roller is located inside the cylinder, the roller is sleeved on the crankshaft assembly and rotates with the crankshaft assembly, and the outer diameter of the roller is r; at least a part of the vane is movably arranged in the vane groove, the vane head of the vane is in active contact with the roller, and the length of the vane is L; the length l of the vane groove, the eccentricity e of the crankshaft assembly, the outer diameter r of the roller, and the length L of the vane satisfy the following conditions: In the design process of the pump body assembly in the present application, the length L of the sliding vane and the length l of the sliding vane groove are limited, and the length L of the sliding vane and the length l of the sliding vane groove can satisfy the formula: Therefore, when the roller rotates to a certain position with the crankshaft assembly, the bending stress level of the entire vane can be effectively reduced, thereby reducing the bending deformation of the vane and reducing the power consumption increase and rattling noise caused by the poor bending operation of the vane. Therefore, the pump body assembly in the present application effectively solves the problem that the vane of the compressor pump body assembly in the prior art is prone to bending and deformation inside the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic structural diagram of a pump assembly according to a specific embodiment of the present invention is shown;

[0020] Figure 2 Shows Figure 1 The enlarged view of point A in the middle;

[0021] Figure 3 A schematic structural diagram of a crankshaft assembly of a pump assembly in the present application is shown;

[0022] Figure 4 The schematic diagrams of the structures of the slides of the pump assembly of two different embodiments of the present application are shown;

[0023] Figure 5 A schematic diagram showing the positional relationship between the roller and the cylinder of the pump assembly when OT and OH overlap in the present application is shown;

[0024] Figure 6 It shows that the angle between OT and OH in this application is θ 1 Schematic diagram of the positional relationship between the roller and the cylinder of the pump assembly;

[0025] Figure 7 It shows that the angle between OT and OH in this application is θ 2 Schematic diagram of the positional relationship between the roller and the cylinder of the pump assembly;

[0026] Figure 8 The simulation result of the deformation of the sliding plate when the rotation angle θ=180° is shown;

[0027] Fig. 9 The figure shows the vane deformation simulation result when the tail of the vane begins to contact the edge of the cylinder vane groove.

[0028] The above drawings include the following reference numerals:

[0029] 10. Cylinder; 11. Vane groove; 111. Edge; 20. Crankshaft assembly; 21. Shaft; 22. Eccentric shaft; 30. Roller; 40. Vane; 41. Tail groove. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0032] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0033] In order to solve the problem in the prior art that the vanes of a compressor pump body assembly are prone to bending and deformation inside a cylinder, the present application provides a pump body assembly, a compressor and a heat exchange device.

[0034] like Figure 1 and Figure 2 As shown, the compressor, as the core component of the air conditioner, plays an important role in the refrigeration system. The rotary compressor is usually composed of a shell, a liquid distributor, a motor, and a pump body assembly. Among them, the pump body assembly includes flanges, partitions, crankshaft assemblies 20, cylinders 10, rollers 30, vanes 40 and other parts, which have the advantages of simple structure, high energy efficiency, and high reliability. When the rotary compressor is running, the vane 40 is located in the vane groove 11 of the cylinder 10 and reciprocates against the roller 30. In the prior art, a tail groove 41 is designed at the tail of the vane 40 for fixing the spring; the roller 30 is located in the inner cavity of the cylinder 10, and the outer peripheral surface of the roller 30 is in contact with the head of the vane 40. When the rotary compressor is in working condition, the vane 40 has a tail pressure difference ( Figure 2 Pb) and spring force ( Figure 2 The slide vane 40 is sealed with the roller 30 under the action of the FN shown in the figure, thereby dividing the inner cavity of the cylinder 10 into an air intake cavity and an air discharge cavity. Figure 2 Under the action of the pressure difference formed by the pressure P1 and P2 shown in the figure, the sliding vane 40 will be tilted and bent, which will affect the running smoothness and reliability of the sliding vane 40.

[0035] From the perspective of the bending deformation of the slider 40, the tail of the slider 40 must have a tail groove 41 that cooperates with the spring, so the bending cross-sectional area is reduced and the bending stiffness is reduced, which causes the bending deformation of the slider 40 to increase, and the slider 40 does not run smoothly, and is prone to low-frequency clicking noises and reliability issues.

[0036] like Figure 1 , Figure 5 , Figure 6 , Figure 7 When the point of contact between the roller 30 and the cylinder 10 coincides with the line OT connecting the center of the cylinder 10 and the center line OH of the slide groove 11 of the cylinder 10, the slide 40 is completely in the slide groove 11, and the rotation angle θ=0° ( Figure 5 As shown), as the roller 30 rotates to 180° toward the suction side ( Figure 1 As shown), at this time, although the slide 40 is extended to the longest, as shown in FIG. Figure 8 As shown, the tail groove 41 of the sliding vane 40 is still in the sliding vane groove 11. The support method determines that the bending deformation of the sliding vane 40 is not large. However, as the compressor runs, the roller 30 rotates in the cylinder 10. When the tail of the sliding vane 40 begins to contact the edge 111 of the sliding vane groove 11 of the cylinder 10 ( Figure 6 , 7 As shown), the support mode will suddenly change, such as Fig. 9 The figure shows the deformation simulation result of the vane 40 at a certain moment. The bending deformation of the vane 40 increases by 2 times. In addition, there is a tail groove 41 at the tail of the vane 40, and the bending stiffness becomes low, which easily leads to excessive contact between the side of the vane 40 and the inside of the vane groove 11. As the number of compressor operations increases, the risk of wear between the vane 40 and the vane groove 11 of the cylinder 10 increases. Therefore, in this application, the structural parameters of the pump body assembly are improved to form a new pump body assembly, so as to change the contact force of the edge of the vane tail at this time when the vane 40 tail begins to contact the edge 111 of the vane groove 11 of the cylinder 10, thereby reducing the overall bending stress level of the vane, thereby reducing the bending deformation of the vane, reducing the increase in power consumption and the rattling problem caused by the poor bending operation of the vane, and reducing the risk of wear between the vane 40 and the vane groove 11 of the cylinder 10.

[0037] Furthermore, the heat exchange device in the present application has a compressor, and the heat exchange device may be an air conditioner or a refrigerator.

[0038] The compressor in the present application is a rotary compressor and has the following pump body assembly. At the same time, the compressor in the present application can be a single-cylinder compressor, a double-cylinder compressor or a multi-cylinder compressor.

[0039] like Figures 1 to 7As shown, the pump body assembly in the present application includes a cylinder 10, a crankshaft assembly 20, a roller 30 and a vane 40. The cylinder 10 has a vane groove 11, and the length of the vane groove 11 is l; at least a portion of the crankshaft assembly 20 is rotatably arranged inside the cylinder 10, and the eccentricity of the crankshaft assembly 20 is e; the roller 30 is located inside the cylinder 10, the roller 30 is sleeved on the crankshaft assembly 20 and rotates with the crankshaft assembly 20, and the outer diameter of the roller 30 is r; at least a portion of the vane 40 is movably arranged in the vane groove 11, the vane 40 head of the vane 40 is in movably contact with the roller 30, and the length of the vane 40 is L; the length l of the vane groove 11, the eccentricity e of the crankshaft assembly 20, the outer diameter r of the roller 30, and the length L of the vane 40 satisfy: In the design process of the pump body assembly in the present application, the length L of the sliding vane 40 and the length l of the sliding vane groove 11 are limited, and the length L of the sliding vane 40 and the length l of the sliding vane groove 11 can satisfy the formula: Therefore, when the roller 30 rotates to a certain position with the crankshaft assembly 20, the bending stress level of the entire vane 40 can be effectively reduced, thereby reducing the bending deformation of the vane 40 and reducing the power consumption increase and rattling noise caused by the poor bending operation of the vane 40. Therefore, the pump body assembly in the present application effectively solves the problem that the vane 40 of the compressor pump body assembly in the prior art is prone to bending deformation inside the cylinder 10.

[0040] And, if Figure 1 and Figure 3 As shown, the crankshaft assembly 20 in the present application includes a shaft 21 and an eccentric shaft 22, and the distance between the center of the eccentric shaft 22 and the center of the shaft 21 is an eccentric distance e; when the pump body assembly is assembled, the eccentric shaft 22 of the crankshaft assembly 20 contacts the inner circle of the roller 30, the slide 40 is placed in the slide groove 11, and the head of the slide 40 contacts the inner circle of the roller 30.

[0041] In a specific embodiment of the present application, the center point of the cylinder 10 is O, the center line of the vane groove 11 is OH, and the line connecting the contact point between the roller 30 and the inner side wall of the cylinder 10 and the center point of the cylinder 10 is OT. When the end surface of the tail of the vane 40 is flush with the edge 111 of the vane groove 11 away from the roller 30, the angle between OH and OT is θ. 1 , and θ 1 The tail of the sliding vane 40 is provided with a tail groove 41, the depth of the tail groove 41 is a times the length L of the sliding vane 40, 1>a>0, when the bottom of the tail groove 41 is flush with the edge 111 of the sliding vane groove 11 away from the roller 30, the angle between OH and OT is θ 2 , and a satisfies:

[0042]

[0043] Specifically, θ 1 With θ 2 Satisfy between: θ 2 -θ 1 ≤60°.

[0044] In the above embodiment, by formula and θ 1 Greater than 260°, which means that by designing the length of the vane 40 and the length of the vane slot 11 of the cylinder 10 to satisfy this formula, when the tail edge of the vane 40 coincides with the edge 111 of the vane slot 11 of the cylinder 10, the compressor rotation angle is greater than 260°, ensuring that the contact force of the tail edge is less than half of the maximum force, reducing the overall bending stress level, thereby reducing bending deformation, and reducing the increase in power consumption and rattling noise caused by the poor bending operation of the vane 40. And through the formula and θ 2 -θ 1 ≤60°, which means that by designing the ratio coefficient of the tail groove 41 of the vane 40 to the overall length to satisfy this formula, when the tail groove of the vane 40 contacts the edge 111 of the vane groove 11, the rotation angle of the compressor is less than 60°, ensuring that the area with a smaller bending cross-sectional area of ​​the vane 40 accounts for a smaller proportion in the overall operation, reducing the contact time, thereby achieving the purpose of enhancing reliability.

[0045] like Figure 4 As shown, there is at least one tail groove 41 of the tail of the sliding vane 40. When there are multiple tail grooves 41, the multiple tail grooves 41 extend in the radial direction of the crankshaft assembly 20. In addition, the area of ​​the groove bottom of the tail groove 41 is smaller than the opening area of ​​the tail groove 41. Optionally, the tail groove 41 is a step groove, and the tail groove 41 includes at least one sinking section to form a step surface on the circumferential inner side wall of the tail groove 41.

[0046] It should be noted that in the present application, the number, arrangement and specific shape of the tail grooves 41 can be adaptively adjusted according to actual usage. In addition, in the present application, the tail grooves 41 are generally used to accommodate a spring that cooperates with the slide 40.

[0047] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: the pump body assembly in the present application includes a cylinder 10, a crankshaft assembly 20, a roller 30 and a vane 40. The cylinder 10 has a vane groove 11, and the length of the vane groove 11 is l; at least a part of the crankshaft assembly 20 is rotatably arranged inside the cylinder 10, and the eccentricity of the crankshaft assembly 20 is e; the roller 30 is located inside the cylinder 10, the roller 30 is sleeved on the crankshaft assembly 20 and rotates with the crankshaft assembly 20, and the outer diameter of the roller 30 is r; at least a part of the vane 40 is movably arranged in the vane groove 11, the vane 40 head of the vane 40 is in active contact with the roller 30, and the length of the vane 40 is L; the length l of the vane groove 11, the eccentricity e of the crankshaft assembly 20, the outer diameter r of the roller 30, and the length L of the vane 40 satisfy: In the design process of the pump body assembly in the present application, the length L of the sliding vane 40 and the length l of the sliding vane groove 11 are limited, and the length L of the sliding vane 40 and the length l of the sliding vane groove 11 can satisfy the formula: Therefore, when the roller 30 rotates to a certain position with the crankshaft assembly 20, the bending stress level of the entire vane 40 can be effectively reduced, thereby reducing the bending deformation of the vane 40 and reducing the power consumption increase and rattling noise caused by the poor bending operation of the vane 40. Therefore, the pump body assembly in the present application effectively solves the problem that the vane of the compressor pump body assembly in the prior art is prone to bending and deformation inside the cylinder.

[0048] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0050] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pump assembly, characterized in that: include: A cylinder (10), wherein the cylinder (10) has a sliding vane groove (11), and the length of the sliding vane groove (11) is l; A crankshaft assembly (20), at least a portion of which is rotatably disposed inside the cylinder (10), and an eccentricity of the crankshaft assembly (20) is e; A roller (30), the roller (30) being located inside the cylinder (10), the roller (30) being sleeved on the crankshaft assembly (20) and rotating along with the crankshaft assembly (20), and the outer diameter of the roller (30) being r; a sliding plate (40), at least a portion of which is movably disposed in the sliding plate groove (11), a sliding plate (40) head of the sliding plate (40) movably contacts the roller (30), and a length of the sliding plate (40) is L; The length l of the vane groove (11), the eccentricity e of the crankshaft assembly (20), the outer diameter r of the roller (30), and the length L of the vane (40) satisfy the following conditions:

2. The pump assembly according to claim 1, characterized in that: The center point of the cylinder (10) is O, the center line of the vane groove (11) is OH, the line connecting the contact point between the roller (30) and the inner wall of the cylinder (10) and the center point of the cylinder (10) is OT, and when the end surface of the tail of the vane (40) is flush with the edge (111) of the vane groove (11) away from the end of the roller (30), the angle between OH and OT is θ1, and θ1 is greater than 260°.

3. The pump assembly according to claim 2, characterized in that: The tail of the sliding vane (40) is provided with a tail groove (41), the depth of the tail groove (41) is a times the length L of the sliding vane (40), 1>a>0, when the groove bottom of the tail groove (41) is flush with the edge (111) of the sliding vane groove (11) away from the end of the roller (30), the angle between OH and OT is θ2, and a satisfies:

4. The pump assembly according to claim 3, characterized in that: θ1 and θ2 satisfy: θ2-θ1≤60°.

5. The pump assembly according to any one of claims 1 to 4, characterized in that: The tail of the sliding vane (40) has at least one tail groove (41). When there are multiple tail grooves (41), the multiple tail grooves (41) extend in the radial direction of the crankshaft assembly (20).

6. The pump assembly according to claim 5, characterized in that: The area of ​​the bottom of the tail groove (41) is smaller than the opening area of ​​the tail groove (41).

7. The pump assembly according to claim 6, characterized in that: The tail groove (41) is a stepped groove, and the tail groove (41) comprises at least one sinking section to form a stepped surface on the circumferential inner side wall of the tail groove (41).

8. A compressor, characterized in that: A pump body assembly comprising any one of claims 1 to 7.

9. The compressor according to claim 8, characterized in that The compressor is a single-cylinder compressor or a multi-cylinder compressor.

10. A heat exchange device, characterized in that: Comprising the compressor as claimed in claim 8 or 9.

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