CN218913162U - Outer rotor type compressor and air conditioner - Google Patents

Abstract

The utility model discloses an outer rotor type compressor and an air conditioner.A compression mechanism and an outer rotor type motor are arranged in an inner cavity of a compressor shell, and the outer rotor type motor comprises a stator, a rotor and a rotor shell; the top of the rotor shell is provided with a first vent hole, the rotor is arranged on the inner wall of the rotor shell, the stator is positioned in the space surrounded by the rotor shell, and the rotor shell is provided with a first mounting hole for the eccentric crankshaft to pass through; the upper end part of the eccentric crankshaft passes through the stator, an auxiliary bearing is arranged between the upper end part of the eccentric crankshaft and the stator, one part of compressed gas discharged by the compression mechanism flows upwards through a gap between the stator and the eccentric crankshaft, the auxiliary bearing and the first vent hole, and the other part flows upwards through a gap between the rotor shell and the shell. The compressor increases the flow path of compressed gas, reduces the swing amplitude of the top of the crankshaft, and further improves the efficiency and the operation reliability of the compressor.

Description

Outer rotor type compressor and air conditioner

Technical Field

The utility model relates to the technical field of refrigeration equipment, in particular to an outer rotor type compressor and an 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 refrigerating and heating cycle includes a series of processes involving compression, condensation, expansion and evaporation, and refrigerating or heating an indoor space.

The low-temperature low-pressure refrigerant enters the compressor, the compressor compresses the refrigerant gas into a high-temperature 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 rolling rotor compressor is widely applied to air conditioners nowadays, and the working principle of the existing rolling rotor compressor is as follows: the motor stator generates magnetic pulling force after being electrified, the motor rotor rotates under the action of the magnetic pulling 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 vane is arranged in the sliding vane groove of the cylinder, the piston is always propped against the action of the compression spring in the spring hole to do reciprocating motion in the sliding vane groove, the sliding vane 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 to suck air from the low-pressure cavity and exhaust air from the high-pressure cavity to complete one-time exhaust, so that the compression of the compressor to air is realized.

For the arrangement of the motor, there are two forms of an inner rotor type and an outer rotor type. The inner rotor type is a motor in which a rotor is arranged inside a stator, and is a motor form which is commonly used in the market at present; the outer rotor type is that the rotor is arranged outside the stator, and the motor form of the outer rotor type limits the market process due to the difficulty of the installation structure.

As in patent CN203962397, the built-in stator 21 is supported and fixed by the supporting component 4 at the bottom, the supporting component 4 is only sleeved on the upper bearing sleeve, no fixed connection is provided between the supporting component and the shell, the supporting effect on the stator is limited, and the supporting is unstable; the rotor shell is of a full-closed structure, and compressed air can only flow upwards through a gap between the rotor shell and the compressor shell; the upper end of the crankshaft is provided with no auxiliary bearing, and the swing amplitude of the top of the crankshaft is large.

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 not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

Aiming at the problems pointed out in the background art, the utility model provides an external rotor type compressor and an air conditioner, wherein an air vent is arranged on a rotor shell, and an auxiliary bearing is arranged in an inner cavity of a stator, so that a flow path of compressed air is increased, the swing amplitude of the top of a crankshaft is reduced, and the efficiency and the operation reliability of the compressor are further improved.

In order to achieve the aim of the utility model, the utility model is realized by adopting the following technical scheme:

in some embodiments, an outer rotor compressor is provided, wherein a compression mechanism and an outer rotor motor are disposed in an inner cavity of a compressor housing, the outer rotor motor comprising a stator, a rotor, and a rotor housing; the top of the rotor shell is provided with a first vent hole, the rotor is arranged on the inner wall of the rotor shell, the stator is positioned in the space surrounded by the rotor shell, and the rotor shell is provided with a first mounting hole for the eccentric crankshaft to pass through;

the upper end part of the eccentric crankshaft passes through the stator, an auxiliary bearing is arranged between the upper end part of the eccentric crankshaft and the stator, one part of compressed gas discharged by the compression mechanism flows upwards through a gap between the stator and the eccentric crankshaft, the auxiliary bearing and the first vent hole, and the other part flows upwards through a gap between the rotor shell and the shell.

The compressor increases the flow path of compressed gas, reduces the swing amplitude of the top of the crankshaft, and further improves the efficiency and the operation reliability of the compressor.

In some embodiments, the rotor housing includes a top wall and a circumferential wall, the circumferential wall is disposed at a circumferential edge of the top wall and extends downward, the top wall and the circumferential wall are in an integral structure, the top wall is provided with the first mounting hole and a plurality of first ventilation holes, and the plurality of first ventilation holes are arranged at intervals along a circumferential direction of the mounting hole.

In some embodiments, the rotor is fixedly arranged on the inner side of the circumferential wall, a flange is arranged at the bottom of the circumferential wall, the flange extends towards the side where the rotor is located, and the bottom of the rotor abuts against the flange.

In some embodiments, a shrink fit or cold press fit is used between the eccentric crankshaft and the first mounting hole.

In some embodiments, the compression mechanism further comprises an upper bearing, the upper bearing is arranged on the eccentric crankshaft, a silencer and a supporting portion are arranged on the upper bearing, the supporting portion is located above the silencer, the stator is fixedly connected with the supporting portion, a second ventilation hole is formed in the supporting portion, and the second ventilation hole is opposite to a gap between the stator and the eccentric crankshaft.

In some embodiments, the support portion is provided with 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, the second boss is provided with a second mounting hole for being connected with a shaft sleeve of the upper bearing, the second boss stretches into an inner cavity surrounded by the stator, a circumferential side wall of the second boss is attached to the stator, and the second boss is provided with a second ventilation hole.

In some embodiments, a mounting groove is formed in the peripheral wall of the housing, the mounting groove bulges towards the outer side of the housing, the mounting groove extends along the height direction of the housing, and a wiring pipe for wiring a power line is arranged in the mounting groove.

In some embodiments, there is a gap between the wiring tube and the rotor housing.

In some embodiments, the rotor housing is stamped from mild steel.

The utility model also provides an air conditioner comprising the outer rotor type compressor.

Compared with the prior art, the utility model has the advantages and positive effects that:

in the outer rotor type compressor disclosed by the application, the upper end part (namely the main shaft section) of the eccentric crankshaft penetrates through the stator, an auxiliary bearing is arranged between the upper position of the main shaft section and the stator, and a gap is formed between the stator and the main shaft section. The arrangement of the auxiliary bearing enables the shafting of the compressor to be changed into a simply supported beam from a cantilever beam, so that the swing amplitude of the top of a crankshaft can be effectively reduced, the operation reliability of the compressor is improved, the vibration of a machine core is reduced, and the noise is optimized to a certain extent.

The arrangement of the first vent hole on the rotor shell is matched with the gap between the stator and the main shaft section, which is equivalent to increasing the flow path of compressed gas, and is beneficial to improving the efficiency of the compressor.

Other features and advantages of the present utility model will become apparent upon review of the detailed description of the utility model in conjunction with the drawings.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

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

FIG. 2 is a cross-sectional view of a compressor according to an embodiment;

fig. 3 is a schematic view showing an assembled structure of a compression 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 Q1;

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

FIG. 6 is a schematic structural view of a rotor housing according to an embodiment;

FIG. 7 is a schematic view of the structure of FIG. 6, as viewed from 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 assembled structure between a circumferential wall of a housing and a wiring pipe according to an embodiment;

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

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

fig. 13 is a schematic structural view of an oil absorbing die according to an embodiment;

reference numerals:

100-a shell, 110-a mounting groove;

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

300-compression mechanism;

310-eccentric crankshafts, 311-main shaft sections, 312-eccentric shaft sections, 313-auxiliary shaft sections and 314-oiling channels;

320-cylinder;

331-upper bearing, 332-lower bearing;

340-a piston;

350-muffler;

410-exhaust pipe, 420-intake pipe;

500-auxiliary bearings;

600-supporting parts, 610-first bosses, 620-second bosses, 621-second ventilation holes, 622-second mounting holes, 630-annular supporting bodies, 631-third ventilation holes, 632-wiring holes and 640-second flanging;

700-wiring tube;

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

900-elastic connection.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should 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 the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

The terms "first," "second," and the like, 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 defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Air conditioner

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

The low-temperature low-pressure refrigerant enters the compressor, the compressor compresses the refrigerant gas into a high-temperature 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 formed by condensation 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 may achieve a cooling effect by exchanging heat with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner may adjust the temperature of the indoor space throughout the cycle.

An outdoor unit of an air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, an 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 function as a condenser or an evaporator. When the indoor heat exchanger is used 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 mode of converting the indoor heat exchanger and the outdoor heat exchanger into a condenser or an evaporator generally adopts a four-way valve, and the arrangement of a conventional air conditioner is specifically referred to and will not be described herein.

The refrigeration working principle of the air conditioner is as follows: the compressor works to enable the interior of an indoor heat exchanger (in an indoor unit, an 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 an indoor fan is cooled by an indoor heat exchanger coil and then changed into cold air to be blown into the indoor, the evaporated refrigerant is pressurized by the compressor and then condensed into liquid state in a high-pressure environment in an outdoor heat exchanger (in an outdoor unit, a condenser at the moment), heat is released, the heat is emitted to the atmosphere by the outdoor fan, and the refrigerating 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 high-pressure gas, and enters the indoor heat exchanger (a condenser at the moment), so that the gaseous refrigerant is condensed, liquefied and released heat to become liquid, and meanwhile, the indoor air is heated, so that the aim of improving the indoor temperature is fulfilled. The liquid refrigerant is decompressed by the throttling device, enters the outdoor heat exchanger (an evaporator at the moment), evaporates, gasifies and absorbs heat to become gas, and simultaneously absorbs heat of outdoor air (the outdoor air becomes colder) to become gaseous refrigerant, and enters the compressor again to start the next cycle.

Compressor ]

The compressor in this embodiment is a rolling rotor compressor, referring to fig. 1 and 2, it 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 refrigerant, and the motor 200 is disposed above the compression mechanism 300.

The motor 200 is an outer rotor type motor including a stator 210 and a rotor assembly 220, the stator 210 being disposed inside the rotor assembly 220.

Compression mechanism 300 includes eccentric crankshaft 310, cylinder 320, piston 340, upper bearing 331, and lower bearing 332.

The eccentric crankshaft 310 comprises a main shaft section 311, an eccentric shaft section 312 and a secondary shaft section 313, wherein the main shaft section 311 is fixedly connected with the rotor assembly 220; with reference to fig. 2, a piston 340 is disposed in the 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; the cylinder 320 is provided with a sliding vane groove, a sliding vane is arranged in the sliding vane groove, the eccentric crankshaft 310 drives the piston 340 to do circumferential motion in the compression cavity, the sliding vane reciprocates along the sliding vane groove, the sliding vane always abuts against the piston 340, and the sliding vane and the piston 340 divide the compression cavity into a high-pressure cavity and a low-pressure cavity.

The working principle of the compressor is as follows: the stator 210 of the motor generates magnetic pulling force after being electrified, the rotor component 220 of the motor rotates under the action of the magnetic pulling force of the stator 210 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 of the eccentric crankshaft to do eccentric circular motion in the compression cavity of the cylinder 320, the sliding vane reciprocates in the sliding vane groove, the sliding vane 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 one circle, air is sucked from the low-pressure cavity and exhausted from the high-pressure cavity to complete one-time exhaust, the compression of the compressor on the air is realized, and the compressed air is exhausted through the bearing exhaust hole.

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

The upper bearing 331 is provided with a muffler 350, the muffler 350 covers the exhaust hole of the upper bearing 331, and compressed air in the cylinder 320 is discharged into a space surrounded by the muffler 350 and the upper bearing 331 through the exhaust hole of the upper bearing 331 and then is discharged into the inner cavity of the compressor through the exhaust hole of the muffler.

Stator, shaft assembly, eccentric crankshaft ]

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, a first ventilation hole 2221 is formed at the top of the rotor shell 222, the rotor 221 is disposed on the inner wall of the rotor shell 222, the rotor shell 222 is of a cap-like structure with an open bottom, the stator 210 is located in a space surrounded by the rotor shell 222, a first mounting hole 2225 through which the eccentric crankshaft 310 passes is formed on the rotor shell 222, and the main shaft section 311 passes through the first mounting hole 2225, so that the rotor assembly 220 is fixedly mounted on the eccentric crankshaft 310, and the rotor assembly 220 drives the eccentric crankshaft 310 to rotate synchronously.

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

The arrangement of the auxiliary bearing 500 changes the shafting of the compressor from a cantilever beam to a simply supported beam, can effectively reduce the swing amplitude of the top of the crankshaft, reduce the vibration of the machine core and optimize the noise to a certain extent.

The arrangement of the first ventilation holes 2221 on the rotor casing 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, and helps to improve the efficiency of the compressor.

A part of the compressed gas 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 ventilation hole 2221, and this part is an auxiliary flow path of the compressed gas; another portion, which is the main flow path of the compressed gas, flows upward through the gap between the rotor case 222 and the housing 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 integrally formed, the circumferential wall 2223 is provided at a circumferential 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 ventilation holes 2221, and the plurality of first ventilation holes 2221 are arranged at intervals along a circumferential direction of the first mounting hole 2225.

The first ventilation hole 2221 helps to improve heat dissipation inside the motor while allowing compressed air to circulate.

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, 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, thereby further improving the mounting reliability of the rotor 221.

In some embodiments, the eccentric crankshaft 310 is in interference fit with the first mounting hole 2225, and may be fixed by hot sheathing or cold pressing therebetween, so as to facilitate installation.

In some embodiments, the rotor housing 222 is stamped from mild steel, stamped from sheet steel, and machined to a lower body than conventional inner rotor type motors.

Stator, support part ]

In some embodiments, the stator 210 is fixedly supported by the supporting portion 600, specifically, referring to fig. 5, the supporting portion 600 is fixedly sleeved on the shaft sleeve of the upper bearing 331, the supporting portion 600 is located above the muffler 350, and the stator 210 is fixedly connected with the supporting portion 600, so as to realize the fixed installation of the stator 210.

Referring to fig. 9, the support 600 is provided with a second ventilation hole 621, the second ventilation 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 ventilation hole 621 and is discharged upward through the auxiliary bearing 500 and the first ventilation hole 2221 in the rotor case 222.

The support 600 also allows compressed air to circulate in addition to the stator 210.

In some embodiments, referring to fig. 5 and 9, the support part 600 is provided with a circular first boss 610 and a second boss 620, the second boss 620 is provided on 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 with the first boss 610, and the first boss 610 can be fixed by rivets or screws, so that 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 a 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 part 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 abutted against the stator 210, and the second boss 620 is provided with a second ventilation hole 621. The inward protruding structure of the second boss 620 helps to further improve the installation stability of the stator 210.

In some embodiments, the circumferential side of the support part 600 is fixedly connected with the inner wall of the housing 100, further improving the installation stability of the stator 210.

The support part 600 is provided with a vent hole through which compressed air flows, which is denoted as a third vent hole 631, and the support part 600 is horizontally arranged along the cross section of the inner cavity of the housing 100, so that the third vent hole 631 is provided so as not to affect the upward flow of compressed air discharged from the bottom compression mechanism.

The plurality of third air holes 631 also effectively act as a kind of porous muffler, and can eliminate noise in a specific frequency band, and reduce the operation noise of the compressor.

In some embodiments, referring to fig. 9, the support part 600 includes an annular support body 630, a protrusion structure formed by a first protrusion 610 and a second protrusion 620 is provided on the annular support body 630, and a plurality of third air holes 631 are provided on the annular support body 630.

The periphery side of annular support body 630 and the inner wall fixed connection of casing 100 are equipped with the turn-ups that upwards extend on the circumference edge of annular support body 630, mark as second turn-ups 640, and second turn-ups 640 and the inner wall welded fastening of casing 100, the structure is reliable.

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

In some embodiments, referring to fig. 10, a mounting groove 110 is formed on a peripheral wall of the housing 100, the mounting groove 110 bulges toward an outer side of the housing 100, the mounting groove 110 extends along a height direction of the housing 100, and a routing tube 700 for routing a power line is formed in the mounting groove 110, so that a special routing area is provided for routing the power line, and the power line is mounted on the housing 100.

The wiring tube 700 has a gap with the rotor case 222 so as not to affect the normal circulation of the compressed gas.

Pump oil Assembly

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

In some embodiments, referring to fig. 12 and 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 the axial direction thereof, an oil applying channel 314 is provided in the eccentric crankshaft 310 along the axial direction thereof, the oil suction pipe 810 is fixedly arranged at the bottom of the oil applying channel 314, the oil suction pipe 810 synchronously rotates 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 provided 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 connection 900, one end of the elastic connection 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, relative motion is generated between the oil suction pipe 810 and the oil suction pipe core 820, the spiral groove 821 on the oil suction pipe core 820 plays a guiding role on oiling, and engine oil in an oil pool enters the oiling channel 314, so that lubrication of all kinematic pairs is realized.

The oil pumping assembly 800 is an archimedes screw pump, the spiral groove 821 can be an outer spiral structure formed by one or more spiral lines, and the oil pumping assembly can realize better oil feeding capability at a low rotation speed of the compressor, ensure effective lubrication of each kinematic pair in the compression mechanism, and improve the running efficiency and reliability of the compressor.

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

Referring to fig. 3 and 13, a perforation 822 is provided at the bottom of the oil absorbing tube core 820, an elastic connection member 900 passes through the perforation 822, one end of the elastic connection member 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 as to realize suspension type installation of the oil absorbing tube core 820.

In some embodiments, referring to fig. 12, the bottom of oil suction tube 810 extends downward beyond eccentric crankshaft 310 and the bottom of oil suction tube core 820 extends downward beyond oil suction tube 810. An oil sump is provided at the bottom of the inner cavity of the housing 100, and the bottom of the oil suction pipe 810 and the bottom of the oil suction pipe core 820 are both located in the oil sump to ensure smooth pumping.

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

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

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (10)

1. An outer rotor type compressor, comprising:

a housing;

the compression mechanism is arranged in the inner cavity of the shell and used for compressing the refrigerant, and comprises an eccentric crankshaft;

an outer rotor type motor including a stator, a rotor, and a rotor case;

the top of the rotor shell is provided with a first vent hole, the rotor is arranged on the inner wall of the rotor shell, the stator is positioned in the space surrounded by the rotor shell, and the rotor shell is provided with a first mounting hole for the eccentric crankshaft to pass through;

the upper end part of the eccentric crankshaft penetrates through the stator, an auxiliary bearing is arranged between the upper end part of the eccentric crankshaft and the stator, one part of compressed gas discharged by the compression mechanism flows upwards through a gap between the stator and the eccentric crankshaft, the auxiliary bearing and the first vent hole, and the other part of compressed gas flows upwards through a gap between the rotor shell and the shell.

2. The outer rotor type compressor as claimed in claim 1, wherein,

the rotor shell comprises a top wall and a circumferential wall, wherein the circumferential wall is arranged at the circumferential edge of the top wall and extends downwards, the top wall and the circumferential wall are of an integrated structure, the top wall is provided with a first mounting hole and a plurality of first vent holes, and the first vent holes are arranged at intervals along the circumference of the mounting hole.

3. The outer rotor type compressor according to claim 2, wherein,

the rotor is fixedly arranged on the inner side of the circumferential wall, a flanging is arranged at the bottom of the circumferential wall, the flanging extends towards the side where the rotor is located, and the bottom of the rotor abuts against the flanging.

4. The outer rotor type compressor as claimed in claim 1, wherein,

and the eccentric crankshaft and the first mounting hole are fixed by adopting a hot sleeve or cold pressing.

5. The outer rotor type compressor as claimed in claim 1, wherein,

the compression mechanism further comprises an upper bearing, the upper bearing is arranged on the eccentric crankshaft, a silencer and a supporting portion are arranged on the upper bearing, the supporting portion is located above the silencer, the stator is fixedly connected with the supporting portion, a second ventilation hole is formed in the supporting portion, and the second ventilation hole is opposite to a gap between the stator and the eccentric crankshaft.

6. The outer rotor type compressor as claimed in claim 5, wherein,

be equipped with first boss and second boss on the supporting part, the second boss is located the top of first boss, the stator with first boss fixed connection, be equipped with on the second boss be used for with the second mounting hole of the hub connection of last bearing, the second boss stretches into in the inner chamber that the stator encloses, the circumference lateral wall of second boss with the stator is leaned on, be equipped with on the second boss the second vent.

7. The outer rotor type compressor as claimed in any one of claims 1 to 6, wherein,

the utility model discloses a power cord is equipped with the casing, be equipped with the mounting groove on the perisporium of casing, the mounting groove orientation the outside of casing is bulged, the mounting groove is followed the direction of height of casing extends, be equipped with the wiring pipe that supplies the power cord to walk the line in the mounting groove.

8. The outer rotor type compressor as claimed in claim 7, wherein,

a gap is provided between the wiring tube and the rotor housing.

9. The outer rotor type compressor as claimed in any one of claims 1 to 6, wherein,

the rotor housing is stamped and formed from low carbon steel.

10. An air conditioner comprising the outer rotor type compressor according to any one of claims 1 to 9.

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