CN218467834U - Rotor type compressor and air conditioner - Google Patents

Abstract

The utility model discloses a rotor compressor and an air conditioner, wherein a compression mechanism is arranged in the inner cavity of a shell of the compressor, the compression mechanism comprises an eccentric crankshaft and a lower bearing, the lower bearing is arranged on the eccentric crankshaft, and an oil feeding channel is arranged in the eccentric crankshaft along the axial direction of the eccentric crankshaft; the oil pumping assembly comprises an oil suction pipe and an oil suction pipe core, wherein the oil suction pipe core is provided with a spiral groove extending along the axial direction of the oil suction pipe core, the oil suction pipe is fixedly arranged at the bottom of the oil feeding channel, the oil suction pipe synchronously rotates along with the eccentric crankshaft, the oil suction pipe core is arranged in an inner cavity of the oil suction pipe, and a rotating gap is formed between the oil suction pipe and the oil suction pipe core; one end of the elastic connecting piece is connected with the oil suction tube core, and the other end of the elastic connecting piece is connected with the lower bearing, so that the suspension type installation of the oil suction tube core is realized. The compressor adopts a screw pump structure, improves the oiling capacity of the compressor, ensures effective lubrication of each kinematic pair in a compression mechanism, and improves the operation efficiency and reliability of the compressor.

Description

Rotor type compressor and air conditioner

Technical Field

The utility model relates to a refrigeration plant technical field especially relates to a rotor 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 the heat is released to the ambient 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.

In the prior art, an oiling blade is arranged at the lower position of an inner cavity of an eccentric crankshaft, the eccentric crankshaft rotates to drive the oiling blade to rotate, and engine oil in an oil pool at the bottom of a pump suction compressor is transferred to each kinematic pair through the inner cavity of the eccentric crankshaft and an oil hole. When the compressor moves at a low rotating speed by using the oil pumping structure of the oil feeding blade, the oil pumping capacity is rapidly reduced, the lubrication of each kinematic pair is influenced, the abrasion is aggravated, and the operating efficiency and the reliability of the compressor are reduced.

The above information disclosed in this background section is only for enhancement of understanding of the background section of the application and therefore it may contain prior art that does not constitute known technology to those 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 adopts the screw pump structure, improves the ability of oiling of compressor, guarantees the effective lubrication of each kinematic pair in the compressing mechanism, improves the operating efficiency and the reliability of compressor.

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

in some embodiments, a rotor compressor is provided, a compression mechanism is arranged in an inner cavity of a shell of the compressor, the compression mechanism comprises an eccentric crankshaft and a lower bearing, the lower bearing is arranged on the eccentric crankshaft, and an oil feeding channel is arranged in the eccentric crankshaft along the axial direction of the eccentric crankshaft;

the oil pumping assembly comprises an oil suction pipe and an oil suction pipe core, the oil suction pipe core is provided with a spiral groove extending along the axial direction of the oil suction pipe, the oil suction pipe is fixedly arranged at the bottom of the oil feeding passage, the oil suction pipe synchronously rotates along with the eccentric crankshaft, the oil suction pipe core is arranged in an inner cavity of the oil suction pipe, and a rotating gap is formed between the oil suction pipe and the oil suction pipe core;

one end of the elastic connecting piece is connected with the oil suction tube core, and the other end of the elastic connecting piece is connected with the lower bearing, so that the suspension type installation of the oil suction tube core is realized.

The compressor adopts a screw pump structure, improves the oiling capacity of the compressor, ensures the effective lubrication of each kinematic pair in a compression mechanism, and improves the operating efficiency and reliability of the compressor.

In some embodiments, the bottom of the oil suction pipe core is provided with a through hole, the elastic connecting piece penetrates through the through hole, one end of the elastic connecting piece is fixedly connected with one side of the lower bearing, and the other end of the elastic connecting piece is fixedly connected with the other side of the lower bearing.

In some embodiments, the bottom of the oil suction pipe extends downwards and outwards from the eccentric crankshaft, and the bottom of the oil suction pipe core extends downwards and outwards from the oil suction pipe;

an oil pool is arranged at the bottom of the inner cavity of the shell, and the bottom of the oil suction pipe core are both positioned in the oil pool.

In some embodiments, the oil absorbent wick is hollow in its interior.

In some embodiments, the compressor further comprises a motor disposed above the compressing mechanism, the motor being an outer rotor type motor including a stator and a rotor assembly disposed at an outer circumferential side of the stator;

the compression mechanism further comprises an upper bearing arranged on the eccentric crankshaft, a supporting part is arranged on the upper bearing and used for fixedly supporting the stator, the supporting part is connected with the shell, and a vent hole for compressed air to flow is formed in the supporting part.

In some embodiments, the support portion includes an annular support body, a protruding structure is disposed on the annular support body, the protruding structure is sleeved on a shaft sleeve of the upper bearing, the stator is fixedly connected with the protruding structure, an outer peripheral side of the annular support body is fixedly connected with an inner wall of the housing, and the annular support body is provided with the vent hole.

In some embodiments, the protruding structure includes a first boss and a second boss, the second boss is disposed on the top of the first boss, the stator is fixedly connected to the first boss, and the second boss is provided with a mounting hole for connecting with the shaft sleeve of the upper bearing;

the upper end of the eccentric crankshaft penetrates through the stator, a gap is formed between an inner cavity surrounded by the stator and the eccentric crankshaft, the second boss extends into the inner cavity surrounded by the stator, and the circumferential side wall of the second boss is attached to the stator.

In some embodiments, an auxiliary bearing is arranged between the upper end of the eccentric crankshaft and the stator, and a second vent hole is arranged on the second boss and faces a gap between the stator and the eccentric crankshaft;

one part of compressed air discharged by the compression mechanism flows upwards through a gap between the stator and the eccentric crankshaft and the auxiliary bearing, and the other part of compressed air flows upwards through a gap between the rotor assembly and the shell.

In some embodiments, the rotor assembly includes rotor and rotor shell, the rotor shell includes roof and circumference wall, circumference wall is located the week side edge of roof and downwardly extending, be equipped with on the roof and supply the mounting hole that the upper end of eccentric crankshaft wore to establish and the air vent that supplies the compressed air circulation, the rotor is fixed to be located on the inner wall of circumference wall.

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

Compared with the prior art, the utility model discloses an advantage is with positive effect:

the oil pumping assembly of the compressor disclosed by the application is an Archimedes screw pump, and can realize better oil feeding capacity at the low rotating speed of the compressor, so that the effective lubrication of each kinematic pair in a compression mechanism is ensured, and the operation efficiency and the reliability of the compressor are improved.

An oil suction pipe core in the oil pumping assembly is suspended below the lower bearing through an elastic connecting piece, and installation is facilitated.

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 a sectional view of a compressor according to an embodiment;

fig. 3 is a schematic view of an assembled structure of a compressing mechanism and an outer rotor type motor according to an embodiment;

FIG. 4 is a schematic view of the structure of FIG. 3 as viewed from the direction Q1;

FIG. 5 is a cross-sectional view of the structure shown in FIG. 3;

fig. 6 is a structural schematic view of a rotor case according to an embodiment;

FIG. 7 is a schematic view of the structure of FIG. 6 as viewed from the direction Q2;

FIG. 8 is a schematic structural view of a rotor assembly according to an embodiment;

fig. 9 is a schematic structural view of a support portion according to an embodiment;

FIG. 10 is a schematic view of an assembly structure between the peripheral wall of the housing and the routing tube according to the embodiment;

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

FIG. 12 is a schematic diagram of an eccentric crankshaft and oil pumping assembly according to an embodiment;

FIG. 13 is a schematic structural diagram of an oil absorption wick according to an embodiment;

reference numerals:

100-shell, 110-mounting groove;

200-motor, 210-stator, 220-rotor assembly, 221-rotor, 222-rotor shell, 2221-first vent hole, 2222-top wall, 2223-circumferential wall, 2224-first flange, 2225-first mounting hole;

300-a compression mechanism;

310-eccentric crankshaft, 311-main shaft section, 312-eccentric shaft section, 313-auxiliary shaft section and 314-oil feeding channel;

320-air cylinder;

331-upper bearing, 332-lower bearing;

340-a piston;

350-a silencer;

410-exhaust pipe, 420-intake pipe;

500-an auxiliary bearing;

600-a support part, 610-a first boss, 620-a second boss, 621-a second vent hole, 622-a second mounting hole, 630-an annular support body, 631-a third vent hole, 632-a wire running hole and 640-a second flanging;

700-wiring pipe;

800-oil pumping component, 810-oil suction pipe, 820-oil suction pipe core, 821-spiral groove and 822-threading hole;

900-elastic connection.

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, merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to 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 implicitly indicating 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 should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable 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 disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating 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 the application of other processes and/or the use of other materials.

[ air-conditioner ]

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 the heat is released to the ambient environment through the condensation process.

The expansion valve expands the high-temperature and high-pressure liquid-phase refrigerant 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 again.

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, at the moment, the evaporator) 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 through 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, at the moment, the condenser) to release heat, the heat is dissipated into the atmosphere through the outdoor fan, and the refrigeration effect is achieved through 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 and 2, 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 compression mechanism 300 includes an eccentric crankshaft 310, a cylinder 320, a piston 340, an upper bearing 331, and a lower bearing 332.

The eccentric crankshaft 310 includes a main shaft section 311, an eccentric shaft section 312, and an auxiliary shaft section 313, and the main shaft section 311 is fixedly connected with the rotor of the motor 200; referring to fig. 2, a piston 340 is disposed in a compression chamber of the cylinder, and the piston 340 is sleeved on the eccentric shaft section 312; the bearing is fixedly connected with the cylinder 320, the upper bearing 331 is provided with a bearing exhaust hole, and the bearing exhaust hole is communicated with the compression cavity; be equipped with the gleitbretter groove on the cylinder 320, the gleitbretter inslot is equipped with the gleitbretter, and eccentric crankshaft 310 drive piston 340 is circumferential motion in the compression chamber, and the gleitbretter is along gleitbretter groove reciprocating motion, and the gleitbretter supports with piston 340 all the time and leans on, and gleitbretter and piston 340 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 the motor generates magnetic pulling force after being electrified, the rotor of the motor rotates under the action of the magnetic pulling force of the stator and drives the eccentric crankshaft 310 to rotate together, the eccentric crankshaft 310 rotates to drive the piston 340 sleeved on the eccentric shaft section 312 to do eccentric circular motion in the compression cavity of the cylinder 320, the sliding sheet reciprocates in the sliding sheet groove, the sliding sheet and the piston 340 divide the compression cavity of the cylinder into a high-pressure cavity and a low-pressure cavity, the eccentric crankshaft 310 drives the piston 340 to rotate for a circle, air is sucked from the low-pressure cavity and exhausted from the high-pressure cavity to complete one-time exhaust, the compressor compresses gas, and the compressed gas is exhausted through the bearing exhaust hole.

The exhaust pipe 410 is connected to the top of the casing 100, the intake pipe 420 is connected to the circumferential side wall of the casing 100, and the intake pipe 420 is communicated with the cylinder intake hole.

The silencer 350 is arranged on the upper bearing 331, the silencer 350 covers the exhaust hole of the upper bearing 331, and compressed air in the air cylinder 320 is exhausted into a space surrounded by the silencer 350 and the upper bearing 331 through the exhaust hole of the upper bearing 331 and then is exhausted into an inner cavity of the compressor through the silencer exhaust hole.

[ oil pumping component ]

The compressor pumps oil in an oil pool at the bottom of the inner cavity of the compressor to each kinematic pair in the compression mechanism 300 through the oil pumping assembly 800, so as to lubricate each kinematic pair.

In some embodiments, referring to fig. 13, the oil pumping assembly 800 includes an oil suction pipe 810 and an oil suction pipe core 820, the oil suction pipe core 820 is provided with a spiral groove 821 extending along an axial direction thereof, the eccentric crankshaft 310 is provided with an upper oil passage 314 along the axial direction thereof, the oil suction pipe 810 is fixedly arranged at the bottom of the upper oil passage 314, the oil suction pipe 810 rotates synchronously with the eccentric crankshaft 310, the oil suction pipe core 820 is arranged in an inner cavity of the oil suction pipe 810, and a rotation gap is formed between the oil suction pipe 810 and the oil suction pipe core 820.

Referring to fig. 3, the oil suction pipe core 820 is fixed by an elastic connector 900, and one end of the elastic connector 900 is connected to the oil suction pipe core 820 and the other end is connected to the lower bearing 332.

When the compressor works, the eccentric crankshaft 310 drives the oil suction pipe 810 to synchronously rotate, the oil suction pipe 810 and the oil suction pipe core 820 generate relative motion, the spiral groove 821 on the oil suction pipe core 820 plays a role in guiding oiling, and engine oil in the oil pool enters the oiling channel 314, so that lubrication of each kinematic pair is realized.

This oil pumping subassembly 800 is an Archimedes screw pump, and spiral groove 821 can be by the outer spiral structure that one or more helices are constituteed, and this oil pumping subassembly also can realize better oiling ability under compressor low-speed, guarantees the effective lubrication of each kinematic pair among the compression mechanism, improves the operating efficiency and the reliability of compressor.

In some embodiments, the elastic connection member 900 is made of piano wire, and has a certain elasticity.

Referring to fig. 3 and 13, the bottom of the oil suction pipe core 820 is provided with a through hole 822, the elastic connecting piece 900 passes through the through hole 822, one end of the elastic connecting piece 900 is fixedly connected with one side of the lower bearing 332, and the other end is fixedly connected with the other side of the lower bearing 332, so that the suspension type installation of the oil suction pipe core 820 is realized.

In some embodiments, referring to fig. 12, the bottom of the suction pipe 810 extends downward and outwardly from the eccentric crankshaft 310, and the bottom of the suction core 820 extends downward and outwardly from the suction pipe 810. An oil pool is arranged at the bottom of the inner cavity of the shell 100, and the bottom of the oil suction pipe 810 and the bottom of the oil suction pipe core 820 are both positioned in the oil pool to ensure smooth oil pumping.

In some embodiments, the interior of the oil suction wick 820 is hollow, reducing the weight of the oil suction wick 820, facilitating a hanging installation.

[ stator, rotating shaft Assembly, eccentric crankshaft ]

The motor 200 is an outer rotor type motor in this application, and includes a stator 210 and a rotor assembly 220, and the stator 210 is disposed inside the rotor assembly 220.

In some embodiments, referring to fig. 3 to 5 and fig. 8, the rotor assembly 220 includes a rotor 221 and a rotor shell 222, the top of the rotor shell 222 is provided with a first vent hole 2221, the rotor 221 is disposed on an inner wall of the rotor shell 222, the rotor shell 222 is of a structure similar to a hat with an open bottom, the stator 210 is located in a space surrounded by the rotor shell 222, the rotor shell 222 is provided with a first mounting hole 2225 for the eccentric crankshaft 310 to penetrate through, the main shaft section 311 penetrates through the first mounting hole 2225, so as to achieve the fixed mounting of the rotor assembly 220 on the eccentric crankshaft 310, and the rotor assembly 220 drives the eccentric crankshaft 310 to rotate synchronously.

The upper end portion (i.e., the main shaft section 311) of the eccentric crankshaft 310 passes through the stator 210, an auxiliary bearing 500 is disposed between the upper portion of the main shaft section 311 and the stator 210, and a gap is formed between the stator 210 and the main shaft section 311.

The auxiliary bearing 500 is arranged, so that a shaft system of the compressor is changed into a simply supported beam by a cantilever beam, the swing amplitude of the top of the crankshaft can be effectively reduced, the vibration of a machine core is reduced, and the noise is optimized to a certain degree.

The arrangement of the first ventilation hole 2221 in the rotor shell 222, in cooperation with the gap between the stator 210 and the main shaft section 311, is equivalent to increasing the flow path of the compressed air, which helps to improve the efficiency of the compressor.

A part of the compressed air discharged from the compression mechanism flows upward through the gap between the stator 210 and the eccentric crankshaft 310, the auxiliary bearing 500, and the first vent hole 2221, and the part is an auxiliary flow path of the compressed air; another portion, which is a main flow path of the compressed gas, flows upward through a gap between the rotor case 222 and the casing 100.

In some embodiments, referring to fig. 6 and 7, the rotor case 222 includes a top wall 2222 and a circumferential wall 2223, the top wall 2222 and the circumferential wall 2223 are an integral structure, the circumferential wall 2223 is provided at a circumferential side edge of the top wall 2222 and extends downward, the top wall 2222 is provided with a first mounting hole 2225 and a plurality of first vent holes 2221, and the plurality of first vent holes 2221 are arranged at intervals in a circumferential direction of the first mounting hole 2225.

The first vent holes 2221 contribute to improvement of heat dissipation inside the motor while achieving circulation of the compressed air.

In some embodiments, the rotor 221 is fixedly disposed inside the circumferential wall 2223, and the rotor 221 is adhered to the inside of the circumferential wall 2223 by glue using a surface-mount mechanism.

The bottom of the circumferential wall 2223 is provided with a flange, which is denoted as a first flange 2224, the first flange 2224 extends toward the side of the rotor 221, and the bottom of the rotor 221 abuts against the first flange 2224, so that the installation reliability of the rotor 221 is further improved.

In some embodiments, the eccentric crankshaft 310 is interference fitted into the first mounting hole 2225, and the two may be fixed by shrink fit or cold press, so as to facilitate installation.

In some embodiments, the rotor shell 222 is stamped from mild steel, stamped using sheet steel, and then machined to a lower cost than conventional inner rotor motors.

[ stator, support part ]

In some embodiments, the stator 210 is fixedly supported by a support portion 600, specifically, referring to fig. 5, the support portion 600 is fixedly sleeved on the sleeve of the upper bearing 331, the support portion 600 is located above the silencer 350, and the stator 210 is fixedly connected to the support portion 600, so as to achieve the fixed installation of the stator 210.

Referring to fig. 9, the support 600 is provided with a second ventilating hole 621, the second ventilating hole 621 faces the gap between the stator 210 and the eccentric crankshaft 310, and a part of the compressed air discharged from the compression mechanism flows upward through the second ventilating hole 621 and is discharged upward through the auxiliary bearing 500 and the first ventilating hole 2221 of the rotor case 222.

The support 600 realizes the mounting of the stator 210 and the flow of the compressed air.

In some embodiments, referring to fig. 5 and 9, the support 600 is provided with a first boss 610 and a second boss 620 having a circular shape, the second boss 620 is provided on the top of the first boss 610, and the top surface of the second boss 620 is higher than the top surface of the first boss 610.

The stator 210 is fixedly connected to the first boss 610, and the first boss 610 may be fixed by rivets or screws, and the first boss 610 plays a role in supporting and fixing the stator 210.

The second boss 620 is provided with a second mounting hole 622 for connecting with the shaft sleeve of the upper bearing 331, and the shaft sleeve of the upper bearing 331 is interference-fitted into the second mounting hole 622, so that the support 600 is fixedly mounted.

The second boss 620 extends into the inner cavity surrounded by the stator 210, the circumferential side wall of the second boss 620 is attached to the stator 210, and the second boss 620 is provided with a second air vent 621. The inner protruding structure of the second boss 620 contributes to further improving the installation stability of the stator 210.

In some embodiments, the peripheral side of the supporting portion 600 is fixedly connected with the inner wall of the casing 100, further improving the installation stability of the stator 210.

The support 600 is provided with a vent hole for the compressed air to flow through, which is denoted as a third vent hole 631, and since the support 600 is laid along the cross section of the inner cavity of the casing 100, the third vent hole 631 is provided so as not to affect the upward flow of the compressed air discharged from the bottom compression mechanism.

The plurality of third venting holes 631 also serve as a kind of porous silencer to eliminate noise of a specific frequency band and reduce the operating noise of the compressor.

In some embodiments, referring to fig. 9, the support 600 includes a ring-shaped support body 630, a protrusion structure formed by a first protrusion 610 and a second protrusion 620 is disposed on the ring-shaped support body 630, and a plurality of third venting holes 631 are disposed on the ring-shaped support body 630.

The periphery of the annular support body 630 is fixedly connected with the inner wall of the shell 100, the circumferential edge of the annular support body 630 is provided with a flange extending upwards, the flange is marked as a second flange 640, and the second flange 640 is welded and fixed with the inner wall of the shell 100, so that the structure is reliable.

In some embodiments, the annular supporting body 630 is provided with a wire-routing hole 632 for routing a power line, so as to facilitate the routing.

In some embodiments, referring to fig. 10, a mounting groove 110 is formed on the peripheral wall of the casing 100, the mounting groove 110 bulges out toward the outside of the casing 100, the mounting groove 110 extends along the height direction of the casing 100, and a routing pipe 700 for routing a power line is provided in the mounting groove 110, so as to provide a special routing area for routing the power line, thereby implementing the installation of the power line on the casing 100.

There is a gap between the line guide tube 700 and the rotor case 222 so as not to affect the normal flow of the compressed air.

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 housing;

the compression mechanism is arranged in the inner cavity of the shell and used for compressing the refrigerant, the compression mechanism comprises an eccentric crankshaft and a lower bearing, the lower bearing is arranged on the eccentric crankshaft, and an oil feeding channel is arranged in the eccentric crankshaft along the axial direction of the eccentric crankshaft;

the oil pumping assembly comprises an oil suction pipe and an oil suction pipe core, wherein the oil suction pipe core is provided with a spiral groove extending along the axial direction of the oil suction pipe, the oil suction pipe is fixedly arranged at the bottom of the oil feeding passage, the oil suction pipe synchronously rotates along with the eccentric crankshaft, the oil suction pipe core is arranged in an inner cavity of the oil suction pipe, and a rotating gap is formed between the oil suction pipe and the oil suction pipe core;

and one end of the elastic connecting piece is connected with the oil suction pipe core, and the other end of the elastic connecting piece is connected with the lower bearing.

2. A rotor compressor according to claim 1,

the bottom of the oil suction pipe core is provided with a through hole, the elastic connecting piece penetrates through the through hole, one end of the elastic connecting piece is fixedly connected with one side of the lower bearing, and the other end of the elastic connecting piece is fixedly connected with the other side of the lower bearing.

3. A rotor compressor according to claim 1,

the bottom of the oil suction pipe extends downwards and outwards from the eccentric crankshaft, and the bottom of the oil suction pipe core extends downwards and outwards from the oil suction pipe;

an oil pool is arranged at the bottom of the inner cavity of the shell, and the bottom of the oil suction pipe core are both positioned in the oil pool.

4. A rotor compressor according to claim 1,

the oil suction pipe core is hollow inside.

5. Rotor compressor according to any of claims 1 to 4,

the compressor also comprises a motor, the motor is arranged above the compression mechanism and is an outer rotor type motor, and the motor comprises a stator and a rotor assembly arranged on the outer peripheral side of the stator;

the compression mechanism further comprises an upper bearing arranged on the eccentric crankshaft, a supporting part is arranged on the upper bearing and used for fixedly supporting the stator, the supporting part is connected with the shell, and a vent hole for compressed air to flow is formed in the supporting part.

6. A rotor compressor according to claim 5,

the supporting part comprises an annular supporting body, a protruding structure is arranged on the annular supporting body, the protruding structure is sleeved on a shaft sleeve of the upper bearing, the stator is fixedly connected with the protruding structure, the outer peripheral side of the annular supporting body is fixedly connected with the inner wall of the shell, and the annular supporting body is provided with the vent hole.

7. Rotor compressor in accordance with claim 6,

the protruding structure comprises a first boss and a second boss, the second boss is arranged at the top of the first boss, the stator is fixedly connected with the first boss, and the second boss is provided with a mounting hole for connecting with a shaft sleeve of the upper bearing;

the upper end of the eccentric crankshaft penetrates through the stator, a gap is formed between an inner cavity surrounded by the stator and the eccentric crankshaft, the second boss extends into the inner cavity surrounded by the stator, and the circumferential side wall of the second boss is attached to the stator.

8. A rotor compressor according to claim 7,

an auxiliary bearing is arranged between the upper end part of the eccentric crankshaft and the stator, a second vent hole is formed in the second boss, and the second vent hole is over against a gap between the stator and the eccentric crankshaft;

one part of compressed air discharged by the compression mechanism flows upwards through a gap between the stator and the eccentric crankshaft and the auxiliary bearing, and the other part of the compressed air flows upwards through a gap between the rotor assembly and the shell.

9. A rotor compressor according to claim 5,

the rotor subassembly includes rotor and rotor shell, the rotor shell includes roof and circumference wall, the circumference wall is located all side edges and the downwardly extending of roof, be equipped with the confession on the roof the mounting hole that eccentric crankshaft's upper end was worn to establish and the air vent that supplies the compressed air circulation, the rotor is fixed to be located on the inner wall of circumference wall.

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

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