CN218816980U - Rotor type compressor and air conditioner - Google Patents

Abstract

The utility model discloses a rotor formula compressor and air conditioner, compressor include compressing mechanism and motor, and the rotor top and the bottom of motor are equipped with balancing unit respectively, and balancing unit is equipped with the spout including deciding balancing piece, dynamic balance piece and elastic component, deciding balancing piece and rotor fixed connection in deciding the balancing piece, and in the spout was located to the dynamic balance piece, the dynamic balance piece moved from top to bottom in the spout, and the elastic component is connected between dynamic balance piece and rotor. The dynamic balance of the compressor is realized through the dynamic balance block, and the noise is reduced.

Description

Rotor type compressor and air conditioner

Technical Field

The utility model relates to an air conditioner technical field especially relates to a rotor type compressor and air conditioner.

Background

The air conditioner performs a cooling and heating cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The cooling and heating cycle includes a series of processes involving compression, condensation, expansion, and evaporation to cool or heat an indoor space.

The low-temperature and low-pressure refrigerant enters the compressor, the compressor compresses the refrigerant gas in a high-temperature and high-pressure state, and the compressed refrigerant gas is discharged. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

Rolling rotor compressor is widely used in air conditioner nowadays, and the working principle of the existing rolling rotor compressor is: the motor stator generates magnetic pull force after being electrified, the motor rotor rotates under the action of the magnetic pull force of the stator and drives the eccentric crankshaft of the compression mechanism to rotate together, the eccentric crankshaft rotates to drive the piston sleeved on the eccentric part of the eccentric crankshaft to do eccentric circular motion in the cylinder, the sliding sheet is installed in the sliding sheet groove of the cylinder, the piston is always propped against under the action of the compression spring in the spring hole to enable the piston to do reciprocating motion in the sliding sheet groove, the sliding sheet and the piston divide the cylinder into a high-pressure cavity and a low-pressure cavity, and the eccentric crankshaft drives the piston to rotate for one circle, so that the air is sucked from the low-pressure cavity and exhausted from the high-pressure cavity to finish one-time exhaust, and the compressor compresses the air.

Because of the eccentric structure of the crankshaft, the center of the crankshaft and the rotating shaft are not on the same straight line, the whole formed by the rotor/the pump body is unbalanced in stress and generates violent vibration, and the balance blocks are respectively arranged on the upper side and the lower side of the rotor to balance the force and the moment of the eccentric crankshaft, so that the rotor and the compressor are balanced.

For the frequency converter, the operation frequency is variable, and the dynamic balance requirement of the compressor cannot be met only by the fixed balance block.

The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

To the problem pointed out in the background art, the utility model provides a rotor compressor and air conditioner realizes the dynamic balance of compressor, noise reduction.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:

in some embodiments of the present application, there is provided a rotary compressor including:

a compression mechanism for compressing a refrigerant;

the motor comprises a stator and a rotor arranged in the stator, and the rotor is connected with an eccentric crankshaft in the compression mechanism;

the balance part is arranged at the top and the bottom of the rotor, is positioned at the top and is obliquely and oppositely arranged with the bottom, is used for balancing the rotor and is optional, the balance part comprises a balance weight block, a dynamic balance block and an elastic part, the balance weight block is fixedly connected with the rotor, a chute is arranged in the balance weight block, the dynamic balance block is arranged in the chute, the dynamic balance block moves up and down in the chute, and the elastic part is connected with the dynamic balance block and between the rotors.

The dynamic balance block is equivalent to a self-adaptive adjusting block, and can move up and down along the sliding groove under different compressor rotating speeds, so that the dynamic balance of the balance part is realized, the dynamic balance performance of the compressor is improved, and the reliability optimization and the noise optimization of the whole machine are facilitated.

In some embodiments of the present application, an included angle is formed between an extending direction from a groove bottom to a groove opening of the sliding groove and an axial direction of the eccentric crankshaft, the sliding groove extends from the groove bottom to the groove opening in an inclined manner toward a central direction close to the rotor, and the dynamic balance block moves up and down along the sliding groove in an inclined manner.

In some embodiments of the present application, the fixed balance weight is an arc-shaped structure, at least one sliding groove is provided in the fixed balance weight, and the movable balance weight is provided in each sliding groove.

In some embodiments of the present application, the fixed balance weight is a half arc structure, the fixed balance weight is followed the circumference of rotor extends, be equipped with two in the fixed balance weight the spout, two the spout for the central symmetry of fixed balance weight arranges.

In some embodiments of the present application, one side of the chute facing the rotor is open, and the dynamic balance block is loaded into the chute through the opening.

In some embodiments of the present application, the elastic member is a spring, one end of the spring passes through the opening and is connected to the dynamic balance block, the other end of the spring is connected to the rotor, and the spring is provided in a plurality.

In some embodiments of the present application, the end of the fixed weight has an inclination angle in the up-down direction;

the end part of the fixed balancing weight is of an arc-shaped structure.

In some embodiments of the present application, the eccentric crankshaft includes a main shaft section, an upper eccentric shaft section, a connecting shaft section, a lower eccentric shaft section, and an auxiliary shaft section, which are connected in sequence, wherein the upper eccentric shaft section and the lower eccentric shaft section protrude toward opposite sides of the eccentric crankshaft, an upper cylinder is sleeved on the upper eccentric shaft section, a lower cylinder is sleeved on the lower eccentric shaft section, and a middle partition plate is sleeved on the connecting shaft section;

the top edge of the main shaft section is provided with a top extension part extending upwards, and the top extension part is positioned on the opposite side of the upper eccentric shaft section;

and a bottom extension part extending downwards is arranged at the bottom edge of the auxiliary shaft section and is positioned at the opposite side of the lower eccentric shaft section.

In some embodiments of the present application, a plurality of upper through holes are formed in the upper eccentric shaft section, and the upper through holes are arranged at intervals along a protruding portion of the upper eccentric shaft section;

and a plurality of lower through holes are formed in the lower eccentric shaft section and are arranged at intervals along the protruding part of the lower eccentric shaft section.

The utility model also provides an air conditioner, include as above rotor compressor.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural view of a compressor according to an embodiment;

fig. 2 is an internal structure diagram of a compressor according to an embodiment;

FIG. 3 isbase:Sub>A sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic structural diagram of a rotor and a balancing part of a motor according to an embodiment;

FIG. 5 is a schematic view of the structure of FIG. 4 viewed from the bottom up;

fig. 6 is a schematic structural view of the balancing part according to the embodiment (elastic member is omitted);

fig. 7 is a plan view of the balancing part according to the embodiment (the elastic member is omitted);

FIG. 8 is a sectional view taken along line B-B of FIG. 7;

FIG. 9 is a schematic view of an assembly structure between the auxiliary bearing, the eccentric crankshaft, and the upper housing according to the embodiment;

FIG. 10 is a schematic structural view of an auxiliary bearing according to an embodiment;

FIG. 11 is a schematic diagram of an eccentric crankshaft according to an embodiment;

FIG. 12 is an enlarged view of the portion C of FIG. 11;

FIG. 13 is an enlarged view of portion D of FIG. 11;

reference numerals:

100-housing, 110-main housing, 120-upper housing;

200-motor, 210-stator, 220-rotor;

300-a compression mechanism;

310-eccentric crankshaft, 311-main shaft section, 312-upper eccentric shaft section, 3121-upper through hole, 313-connecting shaft section, 314-lower eccentric shaft section, 3141-lower through hole, 315-auxiliary shaft section, 316-top extension, 317-bottom extension, 318-groove, 319-slot;

321-upper cylinder, 322-lower cylinder;

331-upper bearing, 332-lower bearing;

340-a middle separator;

351-upper silencer, 352-lower silencer;

361-upper piston, 362-lower piston;

400-exhaust pipe;

500-balance part, 510-fixed balance block, 511-chute, 520-dynamic balance block, 530-elastic part and 540-arc structure;

600-auxiliary bearing, 610-first cavity, 620-second cavity, 630-boss, 640-through hole, 650-arc surface.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

[ air-conditioner ]

The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator in the present application. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation to cool or heat an indoor space.

The low-temperature and low-pressure refrigerant enters the compressor, the compressor compresses the refrigerant gas in a high-temperature and high-pressure state, and the compressed refrigerant gas is discharged. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve, and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.

The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger serves as a condenser, the air conditioner performs a heating mode; when the indoor heat exchanger is used as an evaporator, the air conditioner performs a cooling mode.

The indoor heat exchanger and the outdoor heat exchanger are switched to be used as a condenser or an evaporator, a four-way valve is generally adopted, and specific reference is made to the arrangement of a conventional air conditioner, which is not described herein any more.

The refrigeration working principle of the air conditioner is as follows: the compressor works to enable the interior of the indoor heat exchanger (in the indoor unit, the evaporator at the moment) to be in an ultralow pressure state, liquid refrigerant in the indoor heat exchanger is rapidly evaporated to absorb heat, air blown out by the indoor fan is cooled by the coil pipe of the indoor heat exchanger to become cold air to be blown into a room, the evaporated and vaporized refrigerant is compressed by the compressor, is condensed into liquid in a high-pressure environment in the outdoor heat exchanger (in the outdoor unit, the condenser at the moment) to release heat, and the heat is dissipated into the atmosphere through the outdoor fan, so that the refrigeration effect is achieved by circulation.

The heating working principle of the air conditioner is as follows: the gaseous refrigerant is pressurized by the compressor to become high-temperature and high-pressure gas, and the high-temperature and high-pressure gas enters the indoor heat exchanger (the condenser at the moment), is condensed, liquefied and released heat to become liquid, and simultaneously heats indoor air, so that the aim of increasing the indoor temperature is fulfilled. The liquid refrigerant is decompressed by the throttling device, enters the outdoor heat exchanger (an evaporator at the moment), is evaporated, gasified and absorbs heat to form gas, absorbs heat of outdoor air (the outdoor air becomes cooler) to form gaseous refrigerant, and enters the compressor again to start the next cycle.

[ compressor ]

The compressor in this embodiment is a rolling rotor compressor, and referring to fig. 1 to 3, the compressor includes a housing 100, a closed inner cavity is formed in the housing 100, a motor 200 and a compression mechanism 300 are disposed in the inner cavity, the motor 200 provides power for the compressor mechanism 300, the compression mechanism 300 is used for compressing a refrigerant, and the motor 200 is disposed above the compression mechanism 300.

The motor 200 includes a stator 210 and a rotor 220, the rotor 220 is disposed inside the stator 210, and the stator 210 is fixedly connected to the inner wall of the casing 100, so as to achieve the fixed installation of the motor 200 in the inner cavity of the compressor.

The compression mechanism 300 includes an eccentric crankshaft 310, a cylinder, a piston, and a bearing.

The eccentric crankshaft 310 includes a main shaft section, an eccentric shaft section, and an auxiliary shaft section, the main shaft section being fixedly connected with the rotor; a piston is arranged in a compression cavity of the air cylinder and sleeved on the eccentric shaft section; the bearing is fixedly connected with the cylinder, a bearing exhaust hole is formed in the bearing, and the bearing exhaust hole is communicated with the compression cavity; be equipped with the sliding vane groove on the cylinder, the sliding vane inslot is equipped with the gleitbretter, and eccentric crankshaft drive piston is circumferential motion in the compression chamber, and the gleitbretter is along sliding vane groove reciprocating motion, and the gleitbretter supports with the piston all the time and leans on, and gleitbretter and piston separate into high-pressure chamber and low-pressure chamber with the compression chamber.

The working principle of the compressor is as follows: the stator 210 of motor produces magnetic pull after the circular telegram, the rotor 220 of motor is rotary motion under the magnetic pull effect of stator, and drive eccentric bent axle 310 and be rotary motion together, eccentric bent axle 310 rotates and then drives the piston of cover on its eccentric shaft section and be eccentric circular motion in the compression intracavity of cylinder, the gleitbretter is reciprocating motion in the gleitbretter inslot, the compression chamber of gleitbretter and piston with the cylinder has been divided into high pressure chamber and low pressure chamber, eccentric bent axle 310 drives the piston and rotates a week and then breathes in from the low pressure chamber and exhaust from the high pressure chamber completion exhaust, realize the compressor to gaseous compression, the gas after the compression is discharged through the bearing exhaust hole.

The exhaust pipe 400 is connected to the top of the housing 100, the intake pipe is connected to the circumferential side wall of the housing 100, and the intake pipe is communicated with the cylinder intake hole.

Fig. 2 shows a double-cylinder rolling rotor compressor, and the compression mechanism 300 specifically includes an eccentric crankshaft 310, two cylinders (an upper cylinder 321 and a lower cylinder 322, respectively), two bearings (an upper bearing 331 and a lower bearing 332, respectively), two pistons (an upper piston 361 and a lower piston 362, respectively), and a middle partition 340.

Referring to fig. 11, the eccentric crankshaft 310 includes a main shaft section 311, an upper eccentric shaft section 312, a connecting shaft section 313, a lower eccentric shaft section 314, and an auxiliary shaft section 315 in sequence from top to bottom. Referring to fig. 3, an upper piston 361 capable of performing eccentric motion is disposed in a compression chamber of the upper cylinder 321, and the upper piston 361 is sleeved on the upper eccentric shaft section 312; a lower piston 362 capable of performing eccentric motion is arranged in a compression cavity of the lower cylinder 322, and the lower piston 362 is sleeved on the lower eccentric shaft section 314; the middle partition plate 340 is sleeved on the connecting shaft section 313, and the middle partition plate 340 is positioned between the upper cylinder 321 and the lower cylinder 322; the upper bearing 331 is sleeved on the main shaft section 311 and is connected with the upper cylinder 321; the lower bearing 332 is sleeved on the secondary shaft section 315 and is connected to the lower cylinder 322.

The upper eccentric shaft section 312 and the lower eccentric shaft section 314 protrude toward the opposite sides of the eccentric crankshaft 310, and specifically, the upper eccentric shaft section 312 and the lower eccentric shaft section 314 are disposed at a relative angle of 180 °, the upper piston 361 and the lower piston 362 perform eccentric rotation simultaneously, the compressed air in the compression cavity of the upper cylinder 321 is discharged through the exhaust hole of the upper bearing 331, and the compressed air in the compression cavity of the lower cylinder 322 is discharged through the exhaust hole of the lower bearing 332.

The upper bearing 331 is provided with an upper silencer 351, the upper silencer 351 covers the exhaust hole of the upper bearing 331, and compressed air in the upper cylinder 321 is exhausted into a space surrounded by the upper silencer 351 and the upper bearing 331 through the exhaust hole of the upper bearing 331 and then exhausted into an inner cavity of the compressor through an upper silencer exhaust hole 3511.

The lower bearing 332 is provided with a lower silencer 352, the lower silencer 352 covers the exhaust hole of the lower bearing 332, and the compressed air in the lower cylinder 322 is firstly exhausted to the space surrounded by the lower silencer 352 and the lower bearing 332 through the exhaust hole on the lower bearing 332.

Different from the above, the lower muffler 352 has no exhaust hole, and the walls of the upper bearing 331, the upper cylinder 321, the middle partition 340, the lower cylinder 322, and the lower bearing 332 have a plurality of through holes penetrating vertically, and the compressed air in the lower bearing 332 and the lower muffler 352 is discharged upward through the through holes into the space surrounded by the upper bearing 331 and the upper muffler 351, and then discharged into the inner chamber of the compressor through the upper muffler exhaust hole.

[ balance portion ]

In some embodiments of the present application, referring to fig. 4 and 5, the top and bottom of the rotor 220 are respectively provided with a balancing part 500, and the balancing part 500 at the top and the balancing part 500 at the bottom are diagonally opposite to each other for balancing the rotor 220.

The structure of the balancing part 500 is shown in fig. 6 to 8, and includes a fixed balancing mass 510, a dynamic balancing mass 20 and an elastic member 530, wherein the fixed balancing mass 510 is fixedly connected with the rotor 220 by means of bolts or the like, a chute 511 is provided in the fixed balancing mass 510, the dynamic balancing mass 520 is provided in the chute 511, the dynamic balancing mass 520 moves up and down in the chute 511, that is, the dynamic balancing mass 520 moves toward and away from the rotor 220, and the elastic member 530 is connected between the dynamic balancing mass 520 and the rotor 220.

The dynamic balance block 520 is equivalent to a self-adaptive adjusting block, and the dynamic balance block 520 can move up and down along the sliding groove 511 by itself under different compressor rotating speeds, so that the dynamic balance of the balance part 500 is realized, the dynamic balance performance of the compressor is improved, and the reliability optimization and the noise optimization of the whole machine are facilitated.

The top and bottom of the rotor 220 may be provided with the balance part 500 having a dynamic balance weight as shown in fig. 6 to 8, or may be provided only at the top or bottom, and the other balance part may be a conventional fixed balance block structure.

In some embodiments of the present application, the sliding slot 511 does not vertically extend up and down along an axial direction parallel to the eccentric crankshaft 310, but has a certain inclination angle, that is, the sliding slot 511 is an inclined slot, an angle is formed between an extending direction from the slot bottom to the slot opening of the sliding slot 511 and the axial direction of the eccentric crankshaft 310, the sliding slot 511 extends obliquely from the slot bottom to the slot opening toward a direction close to the center of the rotor 220, and the dynamic balance block 520 moves up and down along the sliding slot 511 in an inclined manner.

Taking the example in which the balancing unit 500 shown in fig. 6 to 8 is provided at the bottom of the rotor 220, the chute 511 extends obliquely from bottom to top toward the center of the rotor 220.

The inclined chute 511 enables the dynamic balance block 520 to move up and down obliquely, so that the force balance can be changed, the moment balance can be changed, the two are considered, and the dynamic balance is obviously improved.

In some embodiments of the present application, the fixed weight 510 has an arc structure, so as to be fixed to the rotor 220, at least one sliding slot 511 is disposed in the fixed weight 510, and a dynamic weight 520 is disposed in each sliding slot 511.

Through set up a plurality of spouts 511 in the fixed balancing piece 510, adjust dynamic balance simultaneously through a plurality of dynamic balance blocks 520, the effect is better.

As a specific embodiment, the fixed weight 510 is a half arc structure, the fixed weight 510 extends along the circumferential direction of the rotor 220, two sliding slots 511 are provided in the fixed weight 510, and the two sliding slots 511 are symmetrically arranged with respect to the center of the fixed weight 510.

In some embodiments of the present application, one side of the sliding slot 511 facing the rotor is open, and the dynamic balance block 520 is loaded into the sliding slot 511 through the opening, so as to facilitate the installation of the dynamic balance block 520.

Meanwhile, the processing of the sliding groove 511 is facilitated, when the fixed balancing weight 510 is processed, the sliding groove 511 is directly formed in the fixed balancing weight 510, and the top side of the sliding groove 511 is open, so that the operations such as die drawing of the fixed balancing weight 510 cannot be influenced.

In some embodiments of the present application, the elastic member 530 is a spring, one end of the spring is connected to the dynamic balance block 520 through the opening, the other end of the spring is connected to the rotor 220, and the number of the springs may be multiple.

The spring provides the restoring force for the dynamic balance weight 520 on the one hand, and on the other hand, also plays limiting displacement to the installation of dynamic balance weight 520 in spout 511, avoids dynamic balance weight 520 to deviate from in the spout 511.

In some embodiments of the present application, the end of the fixed weight 510 has an inclination angle in the vertical direction, and a die-drawing operation is performed when the fixed weight 510 is processed.

The end of the fixed weight 510 is of an arc structure, so that the impact with the refrigerant flow can be reduced, and the noise can be reduced.

[ auxiliary bearing ]

In some embodiments of the present application, the auxiliary bearing 600 is disposed at the top of the eccentric crankshaft 310 (specifically, the main shaft section 311), and the auxiliary bearing 600 is used for preventing the radial deformation of the eccentric crankshaft 310, reducing the collision risk of the rotor 220 of the motor with the stator 210, reducing the wear, and improving the reliability.

Referring to fig. 9 and 10, a first cavity 610 and a second cavity 620 are disposed up and down in an inner cavity of the auxiliary bearing 600, and the first cavity 610 is located below the second cavity 620. The top of the eccentric crankshaft 310 is disposed in the first cavity 610, and the installation between the eccentric crankshaft 310 and the auxiliary bearing 600 is achieved. The top of the auxiliary bearing 600, that is, the top wall of the second cavity 620, is fixedly connected to the top wall of the housing 100, so that the auxiliary bearing 600 and the housing 100 are mounted.

The auxiliary bearing 600 is coupled to both the top of the eccentric crankshaft 310 and the top wall of the housing 100, thereby effectively preventing radial deformation of the eccentric crankshaft 310 since the housing 100 is stationary.

The top of the housing 100 is provided with a connection terminal (not shown), and referring to fig. 3, the auxiliary bearing 600 is generally cylindrical and extends along the axial direction of the eccentric crankshaft 310, so that the wiring between the motor 200 and the connection terminal at the top is not affected.

The peripheral wall which encloses the second cavity 620 is provided with a plurality of through holes 640 for circulating the refrigerant, the top of the shell 100 is provided with an exhaust port, an exhaust pipe 400 is arranged in the exhaust port, and the second cavity 620 is communicated with the exhaust port.

Referring to fig. 3, the refrigerant compressed by the compression mechanism 300 flows into the space above the motor 200, flows into the second cavity 620 through the through hole 640, and is discharged through the discharge pipe 400.

The plurality of through holes 640 do not affect the normal flow of the refrigerant, and the auxiliary bearing 600 is equivalent to an oil blocking structure formed at the bottom of the exhaust pipe 400, thereby effectively preventing the oil from being discharged from the compressor and keeping the oil in the compressor.

The plurality of through holes 640 also serve as a perforated silencer to reduce noise of the exhaust pipe in the lower right direction by the function of the refrigerant flowing therethrough.

In some embodiments of the present application, referring to fig. 1, the housing 100 includes a main housing 110 and an upper housing 120, the upper housing 120 is disposed on the top of the main housing 110 to cover the top opening of the main housing 110, an exhaust port is disposed on the upper housing 120, and an exhaust pipe 400 is disposed in the exhaust port.

The top of the auxiliary bearing 600 is fixedly connected to the inner wall of the upper housing 120, the discharge pipe 400 extends into the second cavity 620, and the refrigerant flowing into the second cavity 620 is directly discharged from the discharge pipe 400.

When the auxiliary bearing 600 is mounted, the auxiliary bearing 600 is fixed to the upper housing 120, and when the upper housing 120 is mounted to the main housing 110, the auxiliary bearing 600 is assembled with the eccentric crankshaft 310 to assist in positioning the upper housing 120.

The top of the auxiliary bearing 600 is welded or integrally formed with the upper housing 120, and the auxiliary bearing has a simple structure and is convenient to process and assemble.

In some embodiments of the present application, referring to fig. 9, a protrusion 630 is disposed on an inner circumferential wall of the auxiliary bearing 600, the protrusion 630 extends along the inner circumferential wall of the auxiliary bearing 600, the protrusion 630 is an annular protrusion structure, the protrusion 630 partitions an inner cavity of the auxiliary bearing 600 into a first cavity 610 and a second cavity 620, and a top end of the eccentric crankshaft 310 abuts against the protrusion 630.

When the auxiliary bearing 600 is mounted on the eccentric crankshaft 310 and the top of the eccentric crankshaft 310 abuts against the protruding portion 630, the auxiliary bearing 600 is mounted in place to achieve vertical positioning, so that vertical positioning of the upper housing 120 and the main housing 110 is achieved, and the main housing 110 and the upper housing 120 are not assembled in an interference fit manner.

In some embodiments of the present application, referring to fig. 10, the outer diameter of the first cavity 610 is smaller than the outer diameter of the second cavity 620, and the volume of the second cavity 620 is larger, so as to facilitate smooth circulation of the refrigerant, and prevent the refrigerant from being accumulated in the second cavity 620 and being unable to be discharged in time due to the small volume.

The peripheral wall enclosing the first cavity 610 and the peripheral wall enclosing the second cavity 620 are transited by an arc-shaped surface 650, and the arc-shaped surface 650 helps to reduce the circulation resistance of the refrigerant.

In some embodiments of the present application, an oil hole (not shown) is formed in a portion of the eccentric crankshaft 310 extending into the first cavity 610, and the oil hole is used for delivering lubricating oil to a contact surface between the eccentric crankshaft 310 and the auxiliary bearing 600 to lubricate a friction surface.

[ eccentric crankshaft ]

In some embodiments of the present application, referring to fig. 11, the top edge of the main shaft section 310 is provided with an upwardly extending top extension 316, the top extension 316 being located on the opposite side of the upper eccentric shaft section 312, i.e., the top extension 316 is located on the same side as the lower eccentric shaft section 314.

The top extension portion 316 has three functions, namely, to balance most of the mass of the upper eccentric shaft section 312, to form a certain negative pressure at the top when the eccentric crankshaft 310 rotates at a high speed to facilitate oil pumping, and to separate oil from a refrigerant in a collision process with the top extension portion 316, since the oil from the central oil hole pump of the eccentric crankshaft 310 is actually a mixture of the oil and the refrigerant, the oil-spitting rate of the compressor is reduced.

The main shaft section 311 is provided with a groove 318, the groove 318 extends from the top of the main shaft section 311 to a direction close to the upper eccentric shaft section 312, and the groove 318 is located at the opposite side of the top extension 316, that is, the groove 318 is located at the same side as the upper eccentric crankshaft section 312.

The provision of the groove 318 serves two purposes, one is to reduce the mass of the upper eccentric shaft section 312 on the same side, so that the mass of the top extension 316 can be reduced as much as possible, and the other is to serve the function of positioning with the rotor 220.

At the bottom edge of the secondary shaft segment 315 is provided a downwardly extending bottom extension 317, the bottom extension 317 being located on the opposite side of the lower eccentric shaft segment 314, i.e. the bottom extension 317 is located on the same side as the upper eccentric shaft segment 312.

The bottom extension 317 is provided to balance the mass of the lower eccentric shaft section 312.

The bottom extension 317 extends into the bottom sump of the compressor, and referring to fig. 12, the bottom extension 317 is provided with a plurality of slots 319 arranged at intervals.

Due to the arrangement of the slot 319, when the eccentric crankshaft 310 rotates, the bottom extension portion 317 extends into the bottom oil pool, oil in the oil pool can be stirred into a vortex shape by utilizing the slot 319, and oil pumping of the eccentric crankshaft 310 is facilitated.

The eccentric crankshaft 310 in this embodiment is self-balanced by balancing the mass of the upper eccentric shaft section 312 and the lower eccentric shaft section 314 via the top extension 316, the bottom extension 317, and the groove 318.

In some embodiments, the upper eccentric shaft section 312 and the lower eccentric shaft section 314 are respectively provided with an opening extending along the axial direction of the eccentric crankshaft 310, and the opening is through or not through the upper eccentric shaft section 312 and the lower eccentric shaft section 314.

The openings serve to reduce the mass of the upper eccentric shaft section 312 and the lower eccentric shaft section 314, and further improve the self-balancing effect of the eccentric crankshaft 310.

When the opening is a through hole, the opening penetrates the upper and lower oil grooves of the upper eccentric shaft section 312 and the lower eccentric shaft section 314, so that the lubrication is more sufficient.

In some embodiments of the present application, referring to fig. 11 and 13, a plurality of upper through holes 3121 are formed in the upper eccentric shaft section 312, and the upper through holes 3121 are arranged at intervals along the protruding portion of the upper eccentric shaft section 312; the lower eccentric shaft section 314 is provided with a plurality of lower through holes 3141, and the plurality of lower through holes 3141 are arranged at intervals along the protruding portion of the lower eccentric shaft section 314.

The plurality of upper through holes 3121 reduce the mass of the upper eccentric shaft section 312 and also function as upper and lower oil grooves penetrating the upper eccentric shaft section 312, thereby providing more sufficient lubrication.

Similarly, the plurality of lower through holes 3141 reduce the mass of the lower eccentric shaft 314 and also function as upper and lower oil grooves penetrating the lower eccentric shaft 314, thereby providing more sufficient lubrication.

In some embodiments of the present application, the groove 318 serves as a positioning function for the rotor 220, so that a positioning protrusion (not shown) for cooperating with the groove 318 is provided on the rotor 220, thereby achieving a reliable assembly between the rotor 220 and the eccentric crankshaft 310.

In some embodiments of the present application, the top extension 316 is arc-shaped, and the top extension 316 extends along the top circumferential edge of the main shaft segment 311; the bottom extension 317 is arcuate, the bottom extension 317 extending along a bottom circumferential edge of the layshaft section 315.

The top extension 316 and the bottom extension 317 are integrally formed with the eccentric crankshaft 310 for easy machining.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A rotary compressor comprising:

a compression mechanism for compressing a refrigerant;

the motor comprises a stator and a rotor arranged in the stator, and the rotor is connected with an eccentric crankshaft in the compression mechanism;

characterized in that the compressor further comprises:

the balance part is arranged at the top and the bottom of the rotor and positioned at the top and positioned at the bottom, the balance part is obliquely and oppositely arranged and used for balancing the rotor and the balance part, the balance part comprises a balance weight, a dynamic balance weight and an elastic part, the balance weight is fixedly connected with the rotor, a chute is arranged in the balance weight, the dynamic balance weight is arranged in the chute, the dynamic balance weight moves up and down in the chute, and the elastic part is connected with the dynamic balance weight and between the rotors.

2. A rotor compressor according to claim 1,

an included angle is formed between the extending direction from the groove bottom to the groove opening of the sliding groove and the axial direction of the eccentric crankshaft, the sliding groove extends from the groove bottom to the groove opening in an inclined mode towards the central direction close to the rotor, and the dynamic balance block moves up and down along the sliding groove in an inclined mode.

3. A rotor compressor according to claim 1,

the fixed balancing block is of an arc-shaped structure, at least one sliding groove is arranged in the fixed balancing block, and the movable balancing block is arranged in each sliding groove.

4. A rotor compressor according to claim 3,

the fixed balancing weight is of a semi-arc structure, the fixed balancing weight extends along the circumferential direction of the rotor, two sliding grooves are arranged in the fixed balancing weight, and the two sliding grooves are symmetrically arranged relative to the center of the fixed balancing weight.

5. A rotor compressor according to claim 1,

one side of the sliding groove, which faces to the rotor, is open, and the dynamic balance block is arranged in the sliding groove through the opening.

6. Rotor compressor in accordance with claim 5,

the elastic part is a spring, one end of the spring is connected with the dynamic balance block through the opening, the other end of the spring is connected with the rotor, and the springs are arranged in a plurality.

7. Rotor compressor in accordance with one of the claims 1 to 6,

the end part of the fixed balancing block has an inclination angle in the vertical direction;

the end part of the fixed balancing weight is of an arc-shaped structure.

8. Rotor compressor in accordance with one of the claims 1 to 6,

the eccentric crankshaft comprises a main shaft section, an upper eccentric shaft section, a connecting shaft section, a lower eccentric shaft section and an auxiliary shaft section which are sequentially connected, wherein the upper eccentric shaft section and the lower eccentric shaft section are protruded towards the opposite side of the eccentric crankshaft;

the top edge of the main shaft section is provided with a top extension part extending upwards, and the top extension part is positioned on the opposite side of the upper eccentric shaft section;

and a bottom extension part extending downwards is arranged at the bottom edge of the auxiliary shaft section and is positioned at the opposite side of the lower eccentric shaft section.

9. A rotor compressor according to claim 8,

a plurality of upper through holes are formed in the upper eccentric shaft section and are arranged at intervals along the protruding part of the upper eccentric shaft section;

and a plurality of lower through holes are formed in the lower eccentric shaft section and are arranged at intervals along the protruding part of the lower eccentric shaft section.

10. An air conditioner characterized by comprising a rotor type compressor according to any one of claims 1 to 9.

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