Pump body assembly, compressor and air conditioner having the same

Abstract

The present application provides a pump assembly, a compressor, and an air conditioner equipped therewith, comprising a flange, a muffler, and a first reinforcement portion. The flange includes a flange neck portion. The muffler includes a housing having a first opening, and the flange neck portion is disposed within the first opening. The first reinforcement portion is disposed on the inner circumference of the first opening. The first reinforcement portion is used to secure the flange neck portion. According to the pump assembly of the present application, securing the flange neck portion by the first reinforcement portion can increase the flange's resistance to deformation.

Description

Technical Field

[0001] The present application belongs to the technical field of air conditioners, and in particular relates to a pump assembly, a compressor, and an air conditioner having the same. Background Art

[0002] At present, with the increasing maturity of compressor technology, refrigeration and air-conditioning compressors have gradually developed towards high frequency and miniaturization in recent years. The compressor speed has been continuously improved, which can improve the refrigeration capacity while ensuring that the compressor volume remains unchanged, thereby achieving the effect of high energy efficiency and small size.

[0003] However, the operating characteristics of rotary compressors dictate different stress states during operation. Increased compressor speeds increase component loads, placing higher demands on bearings. Currently, when a compressor operates at high speed, the crankshaft rotates at high speed within the constraints of the bearings. The unbalanced forces generated by the rotor assembly cause the long axis of the crankshaft to deflect and bend. The flange bearings constrain the crankshaft, making it susceptible to deformation. This further increases contact stress concentration between the flange bearing and the crankshaft, directly impacting the reliability and noise of the flange bearing and the entire compressor.

[0004] Therefore, how to provide a pump body assembly, a compressor and an air conditioner having the same that can increase the deformation resistance of the flange is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present application is to provide a pump body assembly, a compressor and an air conditioner having the same, which can increase the flange's anti-deformation ability.

[0006] In order to solve the above problems, the present application provides a pump body assembly, comprising:

[0007] Flange, flange includes flange neck;

[0008] The muffler includes a shell having a first opening, and a flange neck is disposed in the first opening;

[0009] The first reinforcement portion is arranged on the inner peripheral side of the first opening; the first reinforcement portion is used to fix the flange neck.

[0010] Preferably, the first reinforcement portion is an annular reinforcement portion circumferentially arranged around the inner wall of the first opening.

[0011] Preferably, the thickness of the annular reinforcement portion is greater than the thickness of the shell;

[0012] And / or, the inner diameter of the annular reinforcement portion is d1; the outer diameter of the flange neck is d2; wherein d1 = d2.

[0013] Preferably, the thickness of the annular reinforcement portion gradually increases in a direction approaching the central axis of the first opening;

[0014] And / or, the annular reinforcement portion is loosely matched with the flange neck.

[0015] Preferably, the flange further includes a flange end; and the housing is connected to the flange end.

[0016] Preferably, the housing has a second opening, which is arranged opposite to the first opening; the inner wall of the second opening is threadedly connected to the outer peripheral side of the flange end.

[0017] Preferably, a flexible structure is provided on the flange neck.

[0018] Preferably, the flexible structure is a through hole.

[0019] Preferably, the number of through holes is set to be multiple; and the multiple through holes are evenly arranged on the flange neck.

[0020] Preferably, the shell includes a cylindrical structure; the first end of the cylindrical structure is a second opening; the second end of the cylindrical structure is provided with a first end face, and the first opening is provided on the first end face; a second reinforcement portion is provided at the connection position between the first end face and the cylindrical structure.

[0021] Preferably, the first end of the flange neck is connected to the flange end; the second end of the flange neck is away from the flange end; and the end surface of the annular reinforcement portion away from the flange end corresponds to the position of the second end of the flange neck.

[0022] According to another aspect of the present application, a compressor is provided, comprising a pump body assembly, which is the above-mentioned pump body assembly.

[0023] According to another aspect of the present application, an air conditioner is provided, comprising a compressor, which is the above-mentioned compressor.

[0024] The pump body assembly, the compressor and the air conditioner having the same provided in the present application fix the flange neck by the first reinforcement portion, thereby increasing the flange's anti-deformation capability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a pump assembly according to an embodiment of the present application;

[0026] Figure 2 A cross-sectional view of a muffler according to an embodiment of the present application;

[0027] Figure 3 A cross-sectional view of a flange according to an embodiment of the present application;

[0028] Figure 4 This is a schematic structural diagram of a muffler according to an embodiment of the present application;

[0029] Figure 5 This is a schematic structural diagram of the flange according to an embodiment of the present application.

[0030] The reference numerals indicate:

[0031] 1. Flange; 11. Flange neck; 12. Flange end; 121. Second threaded structure; 2. Muffler; 21. First end face; 211. First opening; 22. Second opening; 221. First threaded structure; 23. Cylindrical structure; 24. Exhaust hole; 3. First reinforcement portion; 4. Through hole; 5. Crankshaft; 6. Cylinder; 7. Slide; 8. Roller. DETAILED DESCRIPTION

[0032] See also Figure 1 As shown, according to an embodiment of the present application, a pump body assembly includes a flange 1, a muffler 2 and a first reinforcement portion 3, the flange 1 includes a flange neck 11; the muffler 2 includes a shell, the shell has a first opening 211, and the flange neck 11 is arranged in the first opening 211; the first reinforcement portion 3 is arranged on the inner circumference side of the first opening 211; the first reinforcement portion 3 is used to fix the flange neck 11, and by fixing the flange neck 11 by the first reinforcement portion 3, the flange's anti-deformation ability can be increased.

[0033] See also Figure 2 and Figure 4 As shown, the present application also discloses some embodiments, in which the first reinforcement portion 3 is an annular reinforcement portion circumferentially arranged around the inner wall of the first opening 211 , which can better fix the flange neck 11 .

[0034] Furthermore, the flange is an upper flange.

[0035] Furthermore, the thickness of the annular reinforcement portion is greater than the thickness of the shell, so that the strength of the annular reinforcement portion is greater, and the flange neck 11 can be better fixed.

[0036] And / or, the inner diameter of the annular reinforcement portion is d1; the outer diameter of the flange neck 11 is d2; wherein d1=d2, that is, the inner surface of the annular reinforcement portion contacts the outer surface of the flange neck 11, and then fixes it, which can better fix the flange neck 11, thereby effectively increasing the deformation resistance of the upper flange.

[0037] Furthermore, in the direction close to the central axis of the first opening 211, the thickness of the annular reinforcement portion gradually increases and forms a "T"-shaped structure. The thickness of the "T"-shaped structure, that is, the contact point with the flange neck 11, is the largest, so the contact area with the flange neck 11 is large, which makes the fixing effect better, further reduces the contact stress concentration between the crankshaft 5 and the upper flange bearing, and thereby reduces friction loss and noise.

[0038] And / or, the annular reinforcement portion is loosely matched with the flange neck 11, so as to achieve a reinforcing and fixing effect of the muffler on the upper flange neck, thereby effectively increasing the deformation resistance of the upper flange.

[0039] See also Figure 3 and Figure 5 As shown, the present application also discloses some embodiments, wherein the flange 1 further includes a flange end 12 ; the shell is connected to the flange end 12 .

[0040] Furthermore, the shell has a second opening 22, which is arranged opposite to the first opening 211; the inner wall of the second opening 22 is threadedly connected to the outer peripheral side of the flange end 12, avoiding the deformation caused by the silencer squeezing the upper flange end face when the silencer is assembled by screws.

[0041] The pump body structure of the present application includes a crankshaft 5, an upper flange, a silencer, a cylinder 6, a vane 7, a roller 8, and a lower flange. The motor rotor drives the crankshaft 5 to rotate, the upper flange is sleeved on the outside of the long axis of the crankshaft 5, the silencer is assembled on the outside of the upper flange, and the roller 8 is assembled at the eccentric part of the crankshaft 5. The two are placed inside the cylinder 6, and the lower flange is sleeved on the short axis of the crankshaft 5. The upper flange and the lower flange are respectively arranged on both sides of the cylinder 6, and together with the inner circumference of the cylinder 6 and the outer circumference of the roller 8, a compression space is formed; the motor rotor drives the crankshaft 5 and the roller 8, and cooperates with the cylinder 6 and the vane 7 to perform the suction compression work of the refrigerant. The crankshaft 5 of the present application rotates at high speed under the constraint of the upper flange bearing. The unbalanced force generated by the rotor assembly causes the long axis of the crankshaft 5 to produce a certain degree of deflection and bend. The upper flange bearing constrains the crankshaft 5, which will generate contact stress concentration between the upper flange bearing and the crankshaft 5. The flange includes a flange neck 11, flexible through-holes, and a flange end 12. The flange neck 11 has radially evenly distributed flexible through-holes 22. The upper end of the outer circumferential surface of the flange end 12 has a second threaded structure. The inner surface of the second opening is provided with a first threaded structure, which is threadedly connected to the second threaded structure.

[0042] Furthermore, a flexible structure is provided on the flange neck 11, which effectively reduces the radial deformation of the flange, thereby reducing the radial design clearance between the crankshaft 5 and the upper flange bearing, and promoting the formation of an oil film between the crankshaft 5 and the bearing.

[0043] Furthermore, the flexible structure is a through hole 4, and the upper flange deforms. The hole has lower rigidity than other parts of the upper flange and is more prone to deformation. Then, when the crankshaft 5 comes into contact with the bearing, the flexible structure with lower rigidity deforms first, achieving elastic deformation between the crankshaft 5 and the bearing, increasing the elastic deformation between the bearing and the crankshaft 5, making the contact surface between the crankshaft 5 and the bearing more fitted, and changing the point contact to surface contact, thereby reducing the impact of the deformation of the upper flange on the crankshaft 5 and the contact stress between the two. Therefore, the flexible deformation of the through hole 4 can effectively reduce the impact of the deformation of the upper flange bearing on the crankshaft 5, thereby reducing the contact stress between the crankshaft 5 and the upper flange bearing. At the same time, the through hole 4 reduces the contact area between the upper flange and the crankshaft 5, further reducing the wear between the crankshaft 5 and the bearing, and reducing friction loss. It can also reduce the mass of the upper flange, thereby reducing the mass of the compressor as a whole, effectively reducing the vibration of the compressor, and reducing costs.

[0044] Furthermore, the number of the through holes 4 is set to be multiple; and the multiple through holes 4 are evenly arranged on the flange neck 11 .

[0045] Furthermore, the shell includes a cylindrical structure 23; the first end of the cylindrical structure 23 is a second opening 22; the second end of the cylindrical structure 23 is provided with a first end face 21, and the first opening 211 is provided on the first end face 21; a second reinforcement portion is provided at the connection position between the first end face 21 and the cylindrical structure 23; the cylindrical structure 23 and the first end face 21 are connected by a chamfer to form a second reinforcement portion. The large radius and thickness dimensions and high overall height of the chamfer can effectively improve the reliability and fatigue resistance of the muffler itself.

[0046] Furthermore, the first end of the flange neck 11 is connected to the flange end 12; the second end of the flange neck 11 is away from the flange end 12; the end surface of the annular reinforcement portion away from the flange end 12 corresponds to the position of the second end of the flange neck 11, and the silencer has a larger silencer chamber volume, which can effectively increase the silencer effect, which is beneficial to improving reliability and reducing noise.

[0047] Muffler 2 includes a T-shaped upper structure, a central muffler cavity, and an exhaust port 24. The muffler 2 and flange 1 enclose the central muffler cavity. Compared to conventional compressor mufflers 2, this design has the following features: the inner diameter of the T-shaped upper structure matches the outer diameter of the flange neck 11 of the upper flange. The inner circumference of the lower structure features a first threaded structure 221, which is assembled and fixed by threading with the upper flange bearing chassis. The central muffler cavity has a larger volume.

[0048] When the motor rotor drives the crankshaft 5 to rotate at high speed, the upper and lower flanges constrain the axial displacement of the crankshaft 5, while the flange neck 11 of the upper flange constrains the radial displacement of the crankshaft 5. The through hole 4 of the upper flange undergoes flexible deformation to increase the elastic deformation between the crankshaft 5 and the upper flange bearing. The muffler 2 is sleeved onto the upper flange, with the upper "T"-shaped structure having a clearance fit with the flange neck 11 of the upper flange. The lower structure is threadedly engaged with the flange end 12 of the upper flange, allowing the muffler 2 to be assembled onto the upper flange. The upper "T"-shaped structure reinforces the flange neck 11 of the upper flange, while a central muffler cavity is formed between the muffler 2 and the upper flange to reduce exhaust noise. The motor rotor drives the crankshaft 5 to rotate at high speed, the crankshaft 5 bends, and the crankshaft 5 contacts the flange neck 11 of the upper flange. The through hole 4 of the flange neck 11 of the upper flange produces elastic deformation, which increases the elastic deformation between the crankshaft 5 and the upper flange and reduces the contact stress concentration between the crankshaft 5 and the upper flange bearing. At the same time, the muffler 2 is assembled on the upper flange by relying on the first threaded structure 221 of the muffler 2 to cooperate with the second threaded structure 121 on the outer circumference of the flange end 12 of the upper flange, thereby avoiding the deformation caused by the muffler 2 squeezing the upper flange end face when assembling the muffler 2 with conventional screws. The "T"-shaped structure at the upper end of the muffler 2 is loosely matched with the flange neck 11 of the upper flange, which strengthens the fixation of the flange neck 11 of the upper flange, thereby increasing the deformation resistance of the upper flange, further reducing the contact stress concentration between the crankshaft 5 and the upper flange bearing, and thereby reducing friction loss and noise. On the other hand, an intermediate silencer cavity is formed between the muffler 2 and the upper flange. When the refrigerant gas in the cylinder 6 is discharged from the exhaust hole 24 of the upper flange, it enters the intermediate silencer cavity surrounded by the muffler 2 and the upper flange. After passing through the intermediate silencer cavity, the noise level of the refrigerant gas is reduced, and then it is discharged from the exhaust hole 24 of the muffler 2, completing the exhaust process of the compressor.

[0049] According to an embodiment of the present application, a compressor is provided, including a pump body assembly, which is the above-mentioned pump body assembly.

[0050] According to an embodiment of the present application, an air conditioner is provided, including a compressor, which is the compressor described above.

[0051] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0052] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application. The above are merely preferred embodiments of the present application. It should be noted that those skilled in the art may make various improvements and variations without departing from the technical principles of the present application, and such improvements and variations shall also be considered within the scope of protection of the present application.

Claims

1. A pump assembly, characterized in that: include: A flange (1), wherein the flange (1) comprises a flange neck (11); A muffler (2), the muffler (2) comprising a shell, the shell having a first opening (211), the flange neck (11) being arranged in the first opening (211); a first reinforcement portion (3), the first reinforcement portion (3) being arranged on the inner peripheral side of the first opening (211); the first reinforcement portion (3) being used to fix the flange neck (11); The first reinforcement portion (3) is an annular reinforcement portion circumferentially arranged around the inner wall of the first opening (211); the thickness of the annular reinforcement portion gradually increases in a direction close to the central axis of the first opening (211) to form a "T"-shaped structure; the annular reinforcement portion is clearance-matched with the flange neck (11); The flange (1) further comprises a flange end portion (12); the shell is connected to the flange end portion (12); the shell has a second opening (22), and the second opening (22) is arranged opposite to the first opening (211); the inner wall of the second opening (22) is threadedly connected to the outer peripheral side of the flange end portion (12); a flexible structure is provided on the flange neck portion (11); the flexible structure is a through hole (4).

2. The pump assembly according to claim 1, characterized in that: The thickness of the annular reinforcement portion is greater than the thickness of the shell; And / or, the inner diameter of the annular reinforcement portion is d1; the outer diameter of the flange neck (11) is d2; wherein d1=d2.

3. The pump assembly according to claim 1, characterized in that: The number of the through holes (4) is set to be multiple; the multiple through holes (4) are evenly arranged on the flange neck (11).

4. The pump assembly according to claim 1, characterized in that: The shell comprises a cylindrical structure (23); the first end of the cylindrical structure (23) is the second opening (22); the second end of the cylindrical structure (23) is provided with a first end surface (21), and the first opening (211) is provided on the first end surface (21); and a second reinforcement portion is provided at a connection position between the first end surface (21) and the cylindrical structure (23).

5. The pump assembly according to claim 1, characterized in that: The first end of the flange neck (11) is connected to the flange end portion (12); the second end of the flange neck (11) is away from the flange end portion (12); and the end surface of the annular reinforcement portion away from the flange end portion (12) corresponds to the position of the second end of the flange neck (11).

6. A compressor comprising a pump assembly, characterized in that: The pump body assembly is the pump body assembly according to any one of claims 1 to 5.

7. An air conditioner comprising a compressor, characterized in that: The compressor is the compressor described in claim 6.

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