CN114087175A

CN114087175A - Scroll compressor and refrigeration equipment

Info

Publication number: CN114087175A
Application number: CN202010855659.0A
Authority: CN
Inventors: 索文平; 何胜林; 高晓俊
Original assignee: Guangdong Midea Environmental Technologies Co Ltd
Current assignee: Guangdong Midea Environmental Technologies Co Ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2022-02-25

Abstract

The invention provides a scroll compressor and refrigeration equipment, wherein the scroll compressor comprises a shell, an exhaust pipe, a compression assembly, a main frame, a motor assembly and an air guide plate, wherein one end of the exhaust pipe is positioned in the shell, and the other end of the exhaust pipe is positioned outside the shell; the compression assembly comprises a movable disc and a static disc, the static disc is provided with a working cavity, and the working cavity is separated to form a compression cavity in the process that the movable disc moves relative to the static disc; the outer surface of the main frame in the radial direction is provided with at least one notch which is sunken inwards, a vent is formed between the notch of the main frame and the shell in an enclosing manner, and the compression cavity is communicated with the vent; a gap is formed between the outer surface of the motor assembly in the radial direction and the inner wall of the shell; the air guide plate and the shell are enclosed to form an air guide channel with two open ends, the air guide channel comprises a first opening and a second opening, the first opening is communicated with the air vent, and the second opening is communicated with the gap. The effective oil-gas separation of the oil-gas mixture discharged from the top compression cavity in the shell is realized.

Description

Scroll compressor and refrigeration equipment

Technical Field

The invention relates to the technical field of scroll compressors, in particular to a scroll compressor and refrigeration equipment.

Background

When the high-back-pressure scroll compressor works, a mixture of refrigerant and oil entering from the air suction pipe is compressed by a scroll compressor cavity formed by the static scroll and the movable scroll to form a high-speed oil-gas mixture, one part of the mixture is directly discharged from the air discharge pipe, the other part of the mixture enters an axial channel such as a stator and rotor gap and a stator trimming edge to cool a motor and simultaneously realize oil-gas separation, and then the mixture enters the air discharge pipe to be discharged from the scroll compressor. However, for the high-pressure cavity scroll compressor, the exhaust pipe is arranged on the casing between the main frame and the stator, which results in that the exhaust gas of the first part is not directly discharged out of the scroll compressor through effective oil-gas separation, resulting in higher total exhaust gas oil circulation rate of the scroll compressor, on one hand, causing low efficiency of the air conditioning system, and on the other hand, bringing challenges to the reliability of the scroll compressor monomer and the air conditioning system.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

To this end, a first aspect of the invention proposes a scroll compressor.

A second aspect of the invention proposes a refrigeration device.

In view of this, an embodiment of the first aspect of the present invention provides a scroll compressor, including: a housing; one end of the exhaust pipe is positioned in the shell, and the other end of the exhaust pipe is positioned outside the shell; the compression assembly is arranged in the shell and comprises a movable disc and a static disc, a working cavity is formed in the static disc, and the working cavity is separated in the process that the movable disc moves relative to the static disc to form a compression cavity; the main frame is arranged in the shell, at least one notch which is sunken inwards is arranged on the outer surface of the main frame in the radial direction, an air vent is formed between the notch of the main frame and the shell in a surrounding manner, and the compression cavity is communicated with the air vent; a motor assembly disposed in the housing, the motor assembly having a gap formed between an outer surface thereof in a radial direction and an inner wall of the housing; and the air guide plate and the shell are enclosed to form an air guide channel with two open ends, the air guide channel comprises a first opening and a second opening, the first opening is communicated with the air vent, and the second opening is communicated with the gap.

The scroll compressor provided by the above embodiment of the invention comprises a shell, an exhaust pipe, a compression assembly, a main frame, a motor assembly and an air guide plate, wherein one end of the exhaust pipe is positioned in the shell, and the other end of the exhaust pipe is positioned outside the shell, that is, the exhaust pipe is communicated with the inside of the shell and the outside of the shell, compressed refrigerant is discharged into the shell and then discharged to the outside of the shell through the exhaust pipe, and the pressure in the shell is the exhaust pressure of the scroll compressor, so that high back pressure is formed in the shell. Further, be equipped with the compression subassembly in the casing, the compression subassembly includes driving disk and quiet dish, has spiral helicine working chamber on the quiet dish, and the driving disk can be in the activity of the working chamber of quiet dish, compress gas gradually to inhale gas through the port of breathing in with the working chamber intercommunication. Specifically, the compression and the exhaust of the scroll compressor are realized by dividing a working chamber into compression chambers in the process of moving a movable disc relative to a fixed disc. The main frame sets up in the casing and lies in compression assembly's below, and the main frame is equipped with at least one breach sunken inwards on the surface of radial direction, encloses between the breach position of main frame and the casing and establishes and form the blow vent, and it can be understood that, a breach encloses with the casing and establishes and form a blow vent. The compression cavity is communicated with the vent hole, the air guide plate is arranged between the main frame and the upper end face of the motor component, the air guide plate and the shell are enclosed to form an air guide channel with two open ends, the first opening of the air guide channel is communicated with the vent hole, the second opening of the air guide channel is communicated with a gap formed between the outer surface of the motor component in the radial direction and the inner wall of the shell, so that high-speed oil-gas mixture in the compression cavity enters the air guide channel through the vent hole and is guided to the gap between the motor component and the shell in the air guide channel, oil-gas separation is realized while the motor component is cooled, the oil-gas mixture enters the exhaust pipe after oil-gas separation and is discharged out of the scroll compressor, effective oil-gas separation of the oil-gas mixture discharged from the top compression cavity in the shell is realized, and the exhaust oil circulation rate of the existing high-back-pressure scroll compressor is effectively reduced, the efficiency of the air conditioning system is improved, and the reliability of the scroll compressor and the air conditioning system is improved.

In addition, according to the scroll compressor in the above technical solution provided by the present invention, the following additional technical features may be further provided:

in one possible design, the air guide channel is flared in the direction from the main frame to the motor assembly.

In this design, it is further defined that the air guide channel is flared in the direction from the main frame to the motor assembly. That is, in the direction from top to bottom, the opening size of the air guide channel is in an enlarged state, that is, the opening size of the air guide channel positioned above is smaller than that of the air guide channel positioned below, so that after the high-speed oil-gas mixture in the compression cavity enters the air guide channel through the vent hole, the oil-gas mixture expands in the air guide channel along with the enlargement of the opening size of the air guide channel, the flow rate is reduced, and the pressure is reduced, thereby being beneficial to realizing oil-gas separation.

In one possible design, the air guide channel comprises a plurality of air guide sections which are connected in sequence, and the cross-sectional areas of the plurality of air guide sections are increased in sequence in the direction from the main frame to the motor assembly.

In this design, it is further defined that the air guide passage includes a plurality of air guide sections connected in series, and the cross-sectional areas of the plurality of air guide sections increase in series in a direction from the main frame to the motor assembly. That is, in the direction from top to bottom, the cross-sectional areas of the plurality of air guide sections are in an enlarged state, that is, the cross-sectional area of the air guide section positioned above is smaller than that of the air guide section positioned below, so that after the high-speed oil-gas mixture in the compression cavity enters the air guide channel through the vent, the mixture expands in the air guide section along with the enlargement of the cross-sectional area of the air guide section from top to bottom, the flow rate is reduced, and the pressure is reduced, thereby being beneficial to realizing oil-gas separation. For example, the plurality of air guide sections comprise a first air guide section, a second air guide section and a third air guide section from top to bottom, the first air guide section, the second air guide section and the third air guide section are in a step shape, the cross sectional area of the first air guide section is smaller than that of the second air guide section, and the cross sectional area of the second air guide section is smaller than that of the third air guide section, so that a high-speed oil-gas mixture in the compression cavity enters the air guide channel through the air vent, then sequentially passes through the first air guide section, the second air guide section and the third air guide section from top to bottom, gradually expands along with the increase of the cross sectional area of the air guide sections, the flow rate is reduced, and the pressure is reduced, thereby being beneficial to realizing oil-gas separation.

In one possible design, the cross-sectional area of the air guide channel increases from the end near the air vent to the end remote from the air vent.

In this design, it is further defined that the cross-sectional area of the air guide channel increases from the end near the air vent to the end remote from the air vent. That is, in the direction from top to bottom, the transverse neps of the air guide channel are in an enlarged state, that is, the cross section area of the air guide channel positioned above is smaller than that of the air guide channel positioned below, so that after the high-speed oil-gas mixture in the compression cavity enters the air guide channel through the vent, the mixture expands in the air guide channel along with the enlargement of the cross section area of the air guide channel from top to bottom, the flow rate is reduced, and the pressure is reduced, thereby being beneficial to realizing oil-gas separation.

In one possible design, the air guide plate includes: a plate body; the plate side walls are respectively connected with two ends of the plate body, included angles are formed between the plate side walls and the plate body, and concave cavities are formed between the plate side walls and the plate body; the turn-ups is connected with the one end that the board body was kept away from to the board lateral wall, turn-ups and the inner wall sealing connection of casing.

In the design, the air guide plate is further limited to comprise a plate body, two plate side walls and flanges, each plate side wall is connected with one end of the plate body, an included angle is formed between each plate side wall and the plate body, so that the plate side walls and the plate bodies are surrounded to form a concave cavity, and when the concave cavity is abutted against the inner wall of the shell of the scroll compressor, the concave cavity forms an air guide channel. Further, the turn-ups is connected with the one end that the board body was kept away from to the board lateral wall, and the turn-ups is connected with the inner wall sealing connection of casing, make air guide plate and casing enclose to close and form the air guide channel, thereby part oil gas mixture and blast pipe, make oil gas mixture just can discharge through the blast pipe after oil-gas separation after flowing out via the air guide channel, and then effectively reduce current high back pressure's scroll compressor's exhaust oil circulation rate, can improve scroll compressor and air conditioning system's reliability when improving air conditioning system efficiency.

In one possible design, the motor assembly includes: a stator having a gap formed between an outer surface of the stator in the radial direction and an inner wall of the housing; a rotor located inside the stator in a radial direction; one end of the air guide plate is inserted in the gap or abutted against the end face of the stator.

In this design, it is further defined that the motor assembly includes a stator and a rotor, the rotor is located inside the stator in the radial direction, a gap (the gap is generally referred to as a stator trimming) is formed between an outer surface of the stator in the radial direction and an inner wall of the housing, and one end of the air guide plate is inserted into the gap or abuts against an end surface of the stator, so that after entering the air guide plate through the vent hole, the high-speed oil-gas mixture in the compression cavity flows into the gap through the air guide plate, and oil-gas separation can be achieved while cooling the motor assembly.

In one possible design, the air guide plate is provided with a through hole through which the exhaust pipe extends to the outside of the housing.

In the design, the exhaust pipe is further limited to be provided with a through hole on the air guide plate, and the exhaust pipe penetrates through the through hole and extends to the outside of the shell, in the actual layout of the structure of the scroll compressor, the exhaust pipe is generally positioned on the shell corresponding to the position between the motor assembly and the main frame, the air guide plate is also arranged between the main frame and the motor assembly, the air vent which is positioned at the position of the main frame is convenient for the oil-gas mixture to sequentially pass through the air guide channel formed by the air guide plate and the shell, and the gap formed between the motor assembly and the shell, so that the arrangement area of the air guide plate can possibly cover the position of the exhaust pipe, the through hole is arranged on the air guide plate, the exhaust pipe penetrates through the through hole and extends to the outside of the shell, the space is avoided for the arrangement of the exhaust pipe, and the arrangement position of the exhaust pipe and the air guide plate is reasonable. It can be understood that, pass the outside that the through-hole extends to the casing through setting up the blast pipe, it encloses air guide channel and the blast pipe that establishes the formation not directly to have also injectd air deflector and casing, but through the indirect intercommunication of casing, in actual exhaust process, oil-gas mixture enters into the casing by air guide channel, discharge the casing outside by the blast pipe after the oil-gas separation again, and then effectively reduce the exhaust oil circulation rate of the scroll compressor of current high back pressure, can improve scroll compressor and air conditioning system's reliability when improving air conditioning system efficiency.

In one possible design, the number of the air vents is multiple, and the number of the air guide plates is smaller than that of the air vents; under the condition that one air guide plate is arranged, an air guide channel formed by one air guide plate is communicated with any air vent; in the case that the air guide plate is provided in plurality, the air guide passage formed by each air guide plate is communicated with one of the plurality of air vents.

In this design, the number of the vents is further limited to a plurality, and the plurality of vents can improve the compression efficiency. The quantity of air guide plate can set up according to the quantity of blow vent, specifically, the quantity that sets up air guide plate is less than the quantity of blow vent for the air guide channel that each air guide plate formed can both be corresponding to a blow vent, avoids air guide plate's waste. Specifically, under the condition that the number of the air guide plates is one, the air guide channel formed by one air guide plate is connected with any air vent, namely one air guide channel is communicated with one air vent, so that the arrangement position of the air guide plate only needs to consider the position of one air vent, and the arrangement position of the air guide plate is simple and reasonable. Under the condition that the air guide plates are multiple, the air guide channel formed by each air guide plate is communicated with one of the plurality of air vents, namely one air guide channel is communicated with one air vent, so that the setting position of the air guide plate only needs to consider the position of one air vent, and the setting position of the air guide plate is simple and reasonable. Specifically, the number of the vents is generally 2 to 3.

In one possible design, the scroll compressor further includes: and one end of the air suction pipe is communicated with the working cavity, and the other end of the air suction pipe is communicated with the outside of the shell.

In this design, further it still includes the breathing pipe to have injectd the scroll compressor, the one end and the working chamber of breathing pipe are linked together, the other end and the outside of casing of breathing pipe are linked together, specifically, the one end that the breathing pipe is located the casing outside can be linked together with refrigeration plant (like air conditioning system), enter into the mixture of the inside refrigerant of scroll compressor and oil from the breathing pipe, through quiet dish, become fast-speed oil gas mixture after the compression chamber compression that the driving disk formed, get into the air guide passageway through the gas port, get into the clearance between the inner wall of motor element and casing earlier afterwards, realize oil-gas separation when cooling motor element, and then get into the blast pipe and discharge scroll compressor.

In one possible design, the scroll compressor further includes: the crankshaft is connected with the compression assembly and the motor assembly; and the auxiliary frame is arranged in the shell, one end of the crankshaft penetrates through the main frame, and the other end of the crankshaft penetrates through the auxiliary frame.

In this design, further limited scroll compressor and still included bent axle and auxiliary frame, compression subassembly and motor element are connected to the bent axle, and motor element's rotor drives the bent axle and rotates, and the bent axle drives the driving disk and rotates, realizes scroll compressor's compression exhaust. The main frame and the auxiliary frame are arranged in the shell, one end of the crankshaft penetrates through the main frame, and the other end of the crankshaft penetrates through the auxiliary frame, so that the main frame and the auxiliary frame are respectively provided with two ends of the crankshaft to support the crankshaft, the whole pump body assembly is supported, and the pump body assembly is fixedly and stably mounted.

According to a second aspect of the present invention, there is provided a refrigeration apparatus comprising a scroll compressor as set forth in any of the above claims.

The refrigeration equipment provided by the invention comprises the scroll compressor provided by any technical scheme, so that the refrigeration equipment has all the beneficial effects of the scroll compressor, and is not repeated herein.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 illustrates a schematic structural view of a scroll compressor in accordance with an embodiment of the present invention;

FIG. 2 illustrates a schematic view of a portion of a scroll compressor in accordance with an embodiment of the present invention;

FIG. 3 illustrates another schematic structural view of a scroll compressor in accordance with one embodiment of the present invention;

FIG. 4 illustrates an isometric view of an air guide plate in an embodiment in accordance with the invention;

FIG. 5 illustrates a front view of the air guide plate in the embodiment of FIG. 4 according to the present invention;

FIG. 6 shows an isometric view of an air guide plate in accordance with another embodiment of the invention;

FIG. 7 illustrates a front view of the air deflection plate in the embodiment of FIG. 6 according to the present invention;

fig. 8 shows a top view of the air guide plate according to the embodiment of fig. 4 or 5 of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 8 is:

100, 110, 120, exhaust pipe, 130, compression assembly, 132, 134, static disc, 140, main frame, 142, air vent, 150, motor assembly, 152 stator, 154 rotor, 156 gap, 160 air guide plate, 162 first opening, 163 second opening, 164 upper part, 165 middle part, 166 lower part, 167 plate body, 168 plate side wall, 169 flanging, 170 through hole, 180 air suction pipe, 190 crankshaft, 192 sub-frame, 194 cross slip ring and 196 main balance block.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A scroll compressor 100 and a refrigeration apparatus according to some embodiments of the present invention will be described with reference to fig. 1 to 8.

Example one

As shown in fig. 1, 2 and 3, the embodiment of the first aspect of the present invention provides a scroll compressor 100, the scroll compressor 100 includes a housing 110, an exhaust pipe 120, a compression assembly 130, a main frame 140, a motor assembly 150 and an air guide plate 160, wherein one end of the exhaust pipe 120 is located in the housing 110, and the other end is located outside the housing 110, that is, the exhaust pipe 120 communicates the inside of the housing 110 and the outside of the housing 110, the compressed refrigerant is discharged into the housing 110 and then discharged outside the housing 110 through the exhaust pipe 120, and the pressure in the housing 110 is the exhaust pressure of the scroll compressor 100, so that a high back pressure is formed inside the housing 110. Further, be equipped with compression assembly 130 in the casing 110, compression assembly 130 includes movable disk 132 and quiet dish 134, has spiral helicine working chamber on the quiet dish 134, and movable disk 132 can move about in the working chamber of quiet dish 134, compresses air gradually to inhale gas through the port of breathing in with the working chamber intercommunication. Specifically, compression and discharge of the scroll compressor 100 are achieved by causing the movable platen 132 to partition the working chambers into compression chambers during movement relative to the stationary platen 134. The main frame 140 is disposed in the casing 110 below the compression assembly 130, the main frame 140 is provided with at least one notch recessed inward on the outer surface in the radial direction, and a vent 142 is defined between the notch of the main frame 140 and the casing 110, and it is understood that one notch and the casing 110 define one vent 142. The compression cavity is communicated with the vent hole 142, the air guide plate 160 is arranged between the main frame 140 and the upper end face of the motor assembly 150, and the air guide plate 160 and the shell 110 are enclosed to form an air guide channel with two open ends, the first opening 162 of the air guide channel is communicated with the vent hole 142, the second opening 163 of the air guide channel is communicated with a gap 156 formed between the outer surface of the motor assembly 150 in the radial direction and the inner wall of the shell 110, so that high-speed oil-gas mixture in the compression cavity enters the air guide channel through the vent hole 142 and is guided to the gap 156 between the motor assembly 150 and the shell 110 in the air guide channel, oil-gas separation is realized while the motor assembly 150 is cooled, the oil-gas mixture enters the exhaust pipe 120 after the oil-gas separation and is exhausted out of the scroll compressor 100, further, the effective oil-gas separation of the oil-gas mixture exhausted from the top compression cavity in the shell 110 is realized, and the exhaust oil circulation rate of the existing high-back-pressure compressor 100 is effectively reduced, the efficiency of the air conditioning system is improved and the reliability of the scroll compressor 100 and the air conditioning system is improved.

As shown in fig. 1, the air guide plate 160 in the cross-sectional view of fig. 1 is shown in a dotted line because it is shielded.

Further, as shown in fig. 1 and 2, the air guide passage is in a flared structure in a direction from the main frame 140 to the motor assembly 150. That is, in the direction from top to bottom, the opening size of the air guide channel is in an enlarged state, that is, the opening size of the air guide channel positioned above is smaller than the opening size of the air guide channel positioned below, so that after the high-speed oil-gas mixture in the compression cavity enters the air guide channel through the vent hole 142, the mixture expands in the air guide channel along with the enlargement of the opening size of the air guide channel, the flow rate is reduced, and the pressure is reduced, thereby being beneficial to realizing oil-gas separation.

In one embodiment of the present invention, it is further defined that the air guide passage includes a plurality of air guide sections connected in series, and the cross-sectional areas of the plurality of air guide sections increase in series in a direction from the main frame 140 to the motor assembly 150. That is, in the direction from top to bottom, the cross-sectional areas of the air guide sections are in an enlarged state, that is, the cross-sectional area of the air guide section located above is smaller than that of the air guide section located below, so that after the high-speed oil-gas mixture in the compression cavity enters the air guide channel through the vent hole 142, the mixture expands in the air guide section along with the enlargement of the cross-sectional area of the air guide section from top to bottom, the flow rate is reduced, and the pressure is reduced, thereby being beneficial to realizing oil-gas separation. For example, the plurality of air guide sections include a first air guide section, a second air guide section and a third air guide section from top to bottom, the first air guide section, the second air guide section and the third air guide section are in a step shape, the cross-sectional area of the first air guide section is smaller than that of the second air guide section, and the cross-sectional area of the second air guide section is smaller than that of the third air guide section, so that a high-speed oil-gas mixture in the compression cavity enters the air guide channel through the air vent 142, then sequentially passes through the first air guide section, the second air guide section and the third air guide section from top to bottom, and gradually expands, reduces the flow speed and reduces the pressure along with the increase of the cross-sectional area of the air guide sections, thereby being beneficial to realizing oil-gas separation.

It can be understood that the cross-sectional area of each air guide segment at each position may be equal or unequal, and when the cross-sectional area of each air guide segment at each position is unequal, the cross-sectional area of each air guide segment is calculated as an average value, so that the air guide channel forms a flaring structure from top to bottom as a whole.

It should be noted that, as shown in fig. 4, 5, 6 and 7, the air guide plate 160 includes an upper portion 164, a middle portion 165 and a lower portion 166 from top to bottom, and the upper portion 164, the middle portion 165 and the lower portion 166 are sequentially enclosed with the casing 110 to form a first air guide section, a second air guide section and a third air guide section. The upper portion 164, the middle portion 165, and the lower portion 166 may be integrally formed by, but not limited to, stamping, or may be joined by, but not limited to, welding.

In another embodiment of the invention, the cross-sectional area of the air guide channel is further defined to increase from an end proximate to the air vent 142 to an end distal from the air vent 142. That is, in the direction from top to bottom, the transverse neps of the air guide channel are in an enlarged state, that is, the cross-sectional area of the air guide channel positioned above is smaller than that of the air guide channel positioned below, so that after the high-speed oil-gas mixture in the compression cavity enters the air guide channel through the vent hole 142, the mixture expands in the air guide channel along with the enlargement of the cross-sectional area of the air guide channel from top to bottom, the flow rate is reduced, and the pressure is reduced, thereby being beneficial to realizing oil-gas separation.

It is understood that the sidewall of the air guide plate 160 forming the air guide channel may be a straight inclined plate or an inclined plate with a radian, as long as the air guide channel forms a flaring structure from top to bottom as a whole. The specific cases of the aspects are not listed here, but all the aspects belong to the protection scope of the present solution without departing from the design concept.

Example two

As shown in fig. 4 to 8, on the basis of the first embodiment, the second embodiment provides a scroll compressor 100, wherein the air guide plate 160 includes: a plate body 167; the plate side walls 168 are respectively connected with two ends of the plate body 167, an included angle is formed between the plate side walls 168 and the plate body 167, and a concave cavity is formed between the plate side walls 168 and the plate body 167; a flange 169 is connected to the end of the plate side wall 168 remote from the plate body 167, the flange 169 being sealingly connected to the inner wall of the housing 110.

In this embodiment, the air guide plate 160 is further defined to include a plate body 167, two plate sidewalls 168 and a flange 169. as shown in FIG. 8, the number of plate sidewalls 168 is two, each plate sidewall 168 is connected to one end of the plate body 167, and the plate sidewalls 168 are angled with respect to the plate body 167 such that the plate sidewalls 168 and the plate body 167 enclose a cavity that forms an air guide channel when abutting against the inner wall of the housing 110 of the scroll compressor 100. Further, the turned-over edge 169 is connected with one end of the plate side wall 168 far away from the plate body 167, and the turned-over edge 169 is connected with the inner wall of the shell 110 in a sealing manner, so that the air guide plate 160 and the shell 110 are enclosed to form an air guide channel, an oil-gas mixture is separated from the exhaust pipe 120, the oil-gas mixture can be discharged through the exhaust pipe 120 after flowing out through the air guide channel and being subjected to oil-gas separation, the exhaust oil circulation rate of the existing high-backpressure scroll compressor 100 is effectively reduced, and the reliability of the scroll compressor 100 and an air conditioning system can be improved while the efficiency of the air conditioning system is improved.

Further, as shown in fig. 8, the plate body 167 is an arc, specifically, an arc similar to the inner wall radian of the housing 110 may be used, so that the air guide plate 160 is more attached to the inner wall of the housing 110, thereby avoiding interference between the air guide plate 160 and other components of the scroll compressor 100, and also reducing the space occupied by the air guide plate 160, so that the structure of the scroll compressor 100 is reduced, even the structure of the existing scroll compressor 100 is not required to be changed, the effect of increasing the oil-gas separation rate can be realized by directly adding the air guide plate 160 on the basis of the existing scroll compressor 100, which is beneficial to popularization of products.

Furthermore, the flange 169 is welded to the housing 110, and the flange 169 is welded to the housing 110, so that the flange is hermetically connected to the housing 110 in a welding manner, which is favorable for ensuring the sealing property of the air guide channel formed by the air guide plate 160 and the housing 110, and the air guide channel is formed into a structure in which air is introduced from the upper side and is discharged from the lower side, thereby avoiding the problem of air leakage between the side wall of the air guide channel, especially between the flange 169 and the housing 110, and being favorable for oil-gas separation. On the other hand, the welding connection can ensure the connection strength between the air guide plate 160 and the housing 110, and prevent the air guide plate 160 from being deformed due to external force.

EXAMPLE III

As shown in fig. 1, in any of the above embodiments, the motor assembly 150 includes: a stator 152 having a gap 156 formed between an outer surface of the stator 152 in the radial direction and an inner wall of the housing 110; a rotor 154, the rotor 154 being located inside the stator 152 in the radial direction; one end of the air guide plate 160 is inserted in the gap 156 or abuts against an end surface of the stator 152.

In this embodiment, the motor assembly 150 includes a stator 152 and a rotor 154, the rotor 154 is located inside the stator 152 in the radial direction, a gap 156 is formed between the outer surface of the stator 152 in the radial direction and the inner wall of the housing 110 (the gap 156 is generally referred to as a stator trimming in the art), one end of the air guide plate 160 is inserted into the gap 156 or abuts against the end surface of the stator 152, so that after the high-speed oil-gas mixture in the compression cavity enters the air guide plate 160 through the air vent 142, the oil-gas mixture flows into the gap 156 from the air guide plate 160, and the oil-gas separation can be realized while the motor assembly 150 is cooled.

It will be appreciated that in the radial direction, the stator 152 and the rotor 154 necessarily have a certain clearance therebetween, and the air-fuel mixture can also serve to cool the motor assembly 150 and achieve air-fuel separation when flowing through the clearance between the stator 152 and the rotor 154.

As shown in fig. 6 and 7, in any of the above embodiments, the air guide plate 160 is provided with a through hole 170, and the exhaust pipe 120 extends to the outside of the housing 110 through the through hole 170.

In this embodiment, the through hole 170 is formed on the air guide plate 160, and the air outlet pipe 120 extends to the outside of the casing 110 through the through hole 170, in the actual layout of the structure of the scroll compressor 100, the air outlet pipe 120 is generally located on the casing 110 corresponding to the position between the motor assembly 150 and the main frame 140, and the air guide plate 160 is also located between the main frame 140 and the motor assembly 150, such a position is provided that the air-fuel mixture passes through the air vent 142 located at the position of the main frame 140, the air guide channel formed by the air guide plate 160 and the casing 110 in a surrounding manner, and the gap 156 formed between the motor assembly 150 and the casing 110, so that the arrangement region of the air guide plate 160 may cover the position of the air outlet pipe 120, and by providing the through hole 170 on the air guide plate 160 and extending the air outlet pipe 120 to the outside of the casing 110 through the through hole 170, a space is provided for the air outlet pipe 120, the installation positions of the exhaust pipe 120 and the air guide plate 160 are rationalized. It can be understood that, by arranging the exhaust pipe 120 to extend to the outside of the housing 110 through the through hole 170, it is also limited that the air guide channel formed by the enclosure of the air guide plate 160 and the housing 110 is not directly communicated with the exhaust pipe 120, but is indirectly communicated with the housing 110, in the actual exhaust process, the oil-gas mixture enters the housing 110 through the air guide channel, and the oil-gas mixture is discharged to the outside of the housing 110 through the exhaust pipe 120 after being separated from the oil gas, so that the exhaust oil circulation rate of the existing high-back-pressure scroll compressor 100 is effectively reduced, and the reliability of the scroll compressor 100 and the air conditioning system can be improved while the efficiency of the air conditioning system is improved.

As shown in fig. 3, in any of the above embodiments, the number of the vent holes 142 is plural, and the plural vent holes 142 can improve the compression efficiency. The number of the air guide plates 160 may be set according to the number of the air vents 142, and specifically, the number of the air guide plates 160 is set to be smaller than the number of the air vents 142, so that each air guide channel formed by each air guide plate 160 can correspond to one air vent 142, and waste of the air guide plates 160 is avoided. Specifically, in the case that there is one air guide plate 160, the air guide channel formed by one air guide plate 160 is connected to any one of the air vents 142, that is, one air guide channel is communicated with one air vent 142, so that the installation position of the air guide plate 160 only needs to consider the position of one air vent 142, and the installation position of the air guide plate 160 is simple and reasonable. Under the condition that the number of the air guide plates 160 is multiple, the air guide channel formed by each air guide plate 160 is communicated with one of the plurality of air vents 142, that is, one air guide channel is communicated with one air vent 142, so that the arrangement position of the air guide plate 160 only needs to consider the position of one air vent 142, and the arrangement position of the air guide plate 160 is simple and reasonable. Specifically, the number of the vents 142 is generally 2 to 3.

For example, as shown in fig. 3, the number of the air vents 142 is three, and the three air vents 142 are the first air vent 142, the second air vent 142, and the third air vent 142. The number of the air guide plates 160 may be one, or two, or three, and in the case where the number of the air guide plates 160 is one, one air guide plate 160 may communicate with any one of the first, second, and

third vents

142, 142. In the case where the number of the air guide plates 160 is two, the two air guide plates 160 may communicate with any one of the first, second, and third air vents 142, respectively. In the case where the number of the air guide plates 160 is three, the three air guide plates 160 may communicate with the first, second, and

third air vents

142, 142 in a one-to-one correspondence. It can be understood that, under the condition that the number of the vent holes 142 is multiple, the oil-gas separation effect that can be realized by arranging one air guide plate 160 at each vent hole 142 is the best, however, the air guide plate 160 can be arranged at only one vent hole 142, which can also play a role in improving the oil-gas separation rate, and the oil-gas mixture enters the exhaust pipe 120 to be discharged out of the scroll compressor 100 after the oil-gas separation, so that the effective oil-gas separation of the oil-gas mixture discharged from the top compression cavity in the shell 110 is realized, thereby effectively reducing the exhaust oil circulation rate of the existing high-back-pressure scroll compressor 100, and improving the reliability of the scroll compressor 100 and the air conditioning system while improving the efficiency of the air conditioning system.

It is to be understood that although the description has exemplified the number of the vents 142 as three, the number of the vents 142 may be other numbers, for example, the vents 142 are one, two, four, etc., which are also embodiments of the present invention, and these implementations and others may be apparent to those skilled in the art.

In any of the above embodiments, as shown in FIG. 1, the scroll compressor 100 further comprises: and an air suction pipe 180, one end of the air suction pipe 180 being in communication with the working chamber, and the other end of the air suction pipe 180 being in communication with the outside of the case 110.

In this embodiment, the scroll compressor 100 further includes a suction pipe 180, one end of the suction pipe 180 is communicated with the working chamber, and the other end of the suction pipe 180 is communicated with the outside of the housing 110, specifically, one end of the suction pipe 180 located outside the housing 110 may be communicated with a refrigeration device (such as an air conditioning system), a mixture of refrigerant and oil entering the scroll compressor 100 from the suction pipe 180 is compressed by the compression chamber formed by the stationary disc 134 and the movable disc 132 to become a high-speed oil-gas mixture, which enters the air guide channel through the air vent 142, and then enters the gap 156 between the motor assembly 150 and the inner wall of the housing 110, so as to realize oil-gas separation while cooling the motor assembly 150, and further enter the exhaust pipe 120 to be discharged out of the scroll compressor 100.

In any of the above embodiments, as shown in FIG. 1, the scroll compressor 100 further comprises: a crankshaft 190 connecting the compression assembly 130 and the motor assembly 150; the sub-frame 192 is provided in the casing 110, one end of the crankshaft 190 penetrates the main frame 140, and the other end of the crankshaft 190 penetrates the sub-frame 192.

In this embodiment, the scroll compressor 100 further includes a crankshaft 190 and an auxiliary frame 192, the crankshaft 190 connects the compression assembly 130 and the motor assembly 150, the rotor 154 of the motor assembly 150 drives the crankshaft 190 to rotate, and the crankshaft 190 drives the movable disk 132 to rotate, so as to achieve the compression and discharge of the scroll compressor 100. The main frame 140 and the auxiliary frame 192 are both disposed in the housing 110, one end of the crankshaft 190 penetrates through the main frame 140, and the other end of the crankshaft 190 penetrates through the auxiliary frame 192, so that the main frame 140 and the auxiliary frame 192 respectively have two ends of the crankshaft 190 to support the crankshaft 190, thereby supporting the whole pump body assembly, and enabling the pump body assembly to be stably mounted.

According to a second aspect of the present invention, there is provided a refrigeration apparatus comprising a scroll compressor 100 as set forth in any of the above claims.

The refrigeration equipment provided by the invention comprises the scroll compressor 100 provided by any one of the above technical solutions, so that all the beneficial effects of the scroll compressor 100 are achieved, and no further description is provided herein.

Further, the refrigeration equipment also comprises an evaporator, a condenser and a throttling mechanism.

In summary, the embodiment of the present invention provides a high back pressure scroll compressor 100 applying an air guide plate 160, as shown in fig. 1, fig. 2 and fig. 3, which sequentially includes from top to bottom: a static disk 134 (specifically a static scroll disk in the embodiment), a movable disk 132 (specifically a movable scroll disk in the embodiment), a cross slip ring 194, a main frame 140, a crankshaft 190, a main balance block 196, an air guide plate 160, a rotor 154, a stator 152, a housing 110, an auxiliary frame 192, and an air suction pipe 180 and an air discharge pipe 120 connected to an air conditioning system are provided on the housing 110, the air guide plate 160 is provided between end surfaces of the main frame 140 and the stator 152 and is matched with an air vent 142 formed between the main frame 140 and the housing 110, a mixture of refrigerant and oil entering from the air suction pipe 180 is compressed by a compression cavity formed by the static disk 134 and the movable disk 132 to become a high-speed air-air mixture, enters the air guide plate 160 through the air vent 142, the flow velocity of the air is reduced by channel expansion, and then enters a gap 156 formed between the stator 152 and the housing 110 (the gap 156 is generally referred to as a stator trimming in the art), the oil-gas separation is achieved while cooling the motor assembly 150, and then into the vent tube 120 to exit the scroll compressor 100.

Further, the air guide plate 160 is installed between the main frame 140 and the stator 152, the upper portion 164 is inserted into the air vent 142 formed by the main frame 140 and the casing 110, the lower portion 166 is inserted into the stator 152 and contacts with the gap 156 between the stator 152 and the inner wall of the casing 110, the air guide plate 160 forms an expansion channel with the casing 110 from top to bottom, the oil-gas mixture entering from the upper end and the exhaust pipe 120 are effectively isolated, the oil-gas mixture is ensured to enter the motor assembly 150 for oil-gas separation, and meanwhile, the expansion channel is favorable for speed reduction of the oil-gas mixture, and the oil content effect is effectively improved.

The air guide plate 160 for the scroll compressor 100 provided by the invention can ensure the effective separation of the exhausted air from the top in the shell 110, thereby effectively reducing the exhaust oil circulation rate of the existing high-pressure cavity scroll compressor 100.

The scroll compressor 100 provided by the invention is provided with the air guide plate 160, so that the reliability of the scroll compressor 100 and an air conditioning system can be improved.

The scroll compressor 100 provided by the embodiment of the invention has a simple structure, is convenient to operate, and solves the problem that the total exhaust oil circulation rate of the scroll compressor 100 is higher because partial exhaust gas of the existing high-pressure cavity scroll compressor 100 is directly exhausted out of the scroll compressor 100 without effective oil-gas separation.

In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A scroll compressor, comprising:

a housing;

the exhaust pipe is arranged in the shell at one end, and the other end of the exhaust pipe is arranged outside the shell;

the compression assembly is arranged in the shell and comprises a movable disc and a fixed disc, a working cavity is formed in the fixed disc, and the movable disc separates the working cavity during moving relative to the fixed disc to form a compression cavity;

the main frame is arranged in the shell, at least one notch which is sunken inwards is arranged on the outer surface of the main frame in the radial direction, an air vent is formed between the notch of the main frame and the shell in a surrounding manner, and the compression cavity is communicated with the air vent;

a motor assembly disposed in the housing, the motor assembly having a gap formed between an outer surface thereof in a radial direction and an inner wall of the housing;

the air guide plate and the shell are enclosed to form an air guide channel with two open ends, the air guide channel comprises a first opening and a second opening, the first opening is communicated with the air vent, and the second opening is communicated with the gap.

2. The scroll compressor of claim 1,

in the direction from the main frame to the motor assembly, the air guide channel is in a flaring structure.

3. The scroll compressor of claim 1,

the air guide channel comprises a plurality of air guide sections which are connected in sequence, and the cross sectional areas of the air guide sections are sequentially increased in the direction from the main frame to the motor assembly.

4. The scroll compressor of claim 1,

the cross-sectional area of the air guide channel increases from an end near the air vent to an end away from the air vent.

5. The scroll compressor of any one of claims 1 to 4, wherein the air guide plate comprises:

a plate body;

the plate side walls are respectively connected with two ends of the plate body, an included angle is formed between each plate side wall and the plate body, and the plate side walls and the plate body form a concave cavity;

the flanging is connected with one end, far away from the plate body, of the plate side wall, and the flanging is connected with the inner wall of the shell in a sealing mode.

6. The scroll compressor of any one of claims 1 to 4, wherein the motor assembly comprises:

a stator having the gap formed between an outer surface of the stator in a radial direction and an inner wall of the housing;

a rotor located inside the stator in a radial direction;

one end of the air guide plate is inserted into the gap or abutted against the end face of the stator.

7. The scroll compressor of any one of claims 1 to 4,

the air guide plate is provided with a through hole, and the exhaust pipe penetrates through the through hole and extends to the outside of the shell.

8. The scroll compressor of any one of claims 1 to 4, further comprising:

and one end of the air suction pipe is communicated with the working cavity, and the other end of the air suction pipe is communicated with the outside of the shell.

9. The scroll compressor of any one of claims 1 to 4, further comprising:

a crankshaft connecting the compression assembly and the motor assembly;

and the auxiliary frame is arranged in the shell, one end of the crankshaft penetrates through the main frame, and the other end of the crankshaft penetrates through the auxiliary frame.

10. A refrigeration apparatus, comprising:

a scroll compressor as claimed in any one of claims 1 to 9.