CN114109820A

CN114109820A - Scroll compressor and air conditioner

Info

Publication number: CN114109820A
Application number: CN202111397628.6A
Authority: CN
Inventors: 蒋云鹏; 徐嘉; 毕远航; 刘雷; 余世顺; 杨诚
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-03-01
Anticipated expiration: 2041-11-23
Also published as: CN114109820B

Abstract

The invention discloses a scroll compressor and an air conditioner, belonging to the technical field of compressors; the scroll compressor comprises a crankshaft and an oil control assembly, wherein the oil control assembly is arranged at the lower end of the crankshaft, and an oil passing channel is formed by the oil control assembly and a middle oil hole of the crankshaft; the operation frequency of the scroll compressor is positively correlated with the opening degree of the oil passing passage. According to the invention, the oil control assembly is arranged at the lower end of the crankshaft, the oil control assembly and the middle oil hole of the crankshaft form an oil passing channel, and when the operating frequency of the scroll compressor changes, the opening degree of the oil passing channel changes along with the oil passing channel; therefore, the opening degree of the oil passing channel is matched with the running frequency of the compressor, and the opening degree of the oil passing channel directly influences the oil supply amount, so that the matching of the oil supply amount and the running frequency of the compressor is realized, the problem of dry grinding caused by insufficient oil supply is avoided, and the problem of reduction of the refrigerating capacity caused by overlarge lubricating oil amount is also avoided.

Description

Scroll compressor and air conditioner

Technical Field

The invention relates to the technical field of compressors, in particular to a scroll compressor and an air conditioner.

Background

The scroll compressor is widely applied to the field of air conditioners due to higher working efficiency, and in order to ensure that the scroll compressor can stably and reliably operate, friction pairs among all parts must be effectively lubricated. The scroll compressor is supplied with oil by an oil pump, a crankshaft drives the oil pump to rotate and suck oil under the driving of a motor, and lubricating oil (refrigerating machine oil) moves upwards along an oil hole in the middle of the crankshaft. The oil pump and the compressor pump body are of a coaxial structure, the compressor pump body and the oil pump are driven to rotate by the rotation of the crankshaft, the rotating speed of the compressor is the same as that of the oil pump, so that the oil output of the oil pump is positively correlated with the rotating speed of the compressor, and therefore, when the oil pump of the compressor is selected, the oil pump with larger oil pump amount is generally selected in order to meet the oil supply amount when the compressor operates at the maximum frequency.

However, although the oil pump with a large oil pumping amount can solve the problem of poor end face lubrication caused by oil shortage in the operation process of the compressor, the refrigeration capacity of the compressor is reduced due to excessive lubricating oil, and particularly when the compressor is operated at a low frequency, the phenomenon of reduction of the refrigeration capacity is obvious.

Disclosure of Invention

In view of this, the present invention provides a scroll compressor and an air conditioner, which are configured such that the operating frequency of the compressor is related to the opening of the oil passage through the oil control assembly, that is, the oil supply amount is adjusted in real time according to the operating frequency, thereby solving the problem of mismatching between the oil supply amount and the frequency in the conventional method.

In order to solve the above-mentioned problems, according to one aspect of the present application, an embodiment of the present invention provides a scroll compressor including:

a crankshaft;

the oil control assembly is arranged at the lower end of the crankshaft, and an oil passage is formed by the oil control assembly and a middle oil hole of the crankshaft;

the operation frequency of the scroll compressor is positively correlated with the opening degree of the oil passing passage.

Furthermore, the oil control assembly comprises an upper cover, a base and a flow control unit, wherein the upper cover is in contact with the base, at least one contact surface is provided with a groove, the flow control unit is arranged in the groove, the upper cover and the base are both provided with oil ducts, and the two oil ducts form an oil passing channel;

when the scroll compressor operates, the flow control unit moves outwards along the groove under the action of centrifugal force or/and oil supply pressure, so that the oil passage of the upper cover is communicated with the oil passage of the base, and the oil passing passage is opened.

Furthermore, one part of the groove is arranged on the lower surface of the upper cover, and the other part of the groove is arranged on the upper surface of the base; or the groove is arranged on the lower surface of the upper cover; or the groove is formed in the upper surface of the base; the recess level sets up and is close to the one end of crossing oil duct and crosses oil duct intercommunication.

Furthermore, the flow control unit comprises a first cut-off block and a first spring, one end of the first spring is in contact with the side wall of the groove, the other end of the first spring is in contact with one end of the first cut-off block, and the other end of the first cut-off block is used for controlling the opening degree of the oil passage.

Furthermore, at least two first cutoff blocks are arranged, and the first springs and the first cutoff blocks are arranged in a one-to-one correspondence manner; and when the scroll compressor does not work, the other ends of the at least two first intercepting blocks block the oil passing channel under the action of the restoring force of the first spring.

Furthermore, one part of the groove is arranged on the lower surface of the upper cover, and the other part of the groove is arranged on the upper surface of the base; or the groove is arranged on the lower surface of the upper cover; or the groove is formed in the upper surface of the base; the recess slope sets up and is close to the one end of crossing oil passage and crosses oil passage intercommunication.

Further, the flow control unit comprises a second flow interception block, and the second flow interception block is positioned in the groove.

Furthermore, at least two second intercepting blocks are arranged; and when the scroll compressor does not work, the oil passing channel is blocked by the at least two second intercepting blocks under the action of gravity.

Further, the groove is vertically formed in the lower surface of the first upper cover.

Furthermore, the flow control unit comprises a third intercepting block and a third spring, one end of the third spring is fixed on the groove, the other end of the third spring is connected with one end of the third intercepting block, and the other end of the third intercepting block is used for controlling the opening degree of the oil passing channel.

Further, when the other end of the third intercepting block blocks the oil passage under the action of gravity, the other end of the third intercepting block abuts against the end face of the base oil passage to prevent the third intercepting block from entering the inside of the base oil passage.

Furthermore, the oil passage of the upper cover comprises two branch oil passages positioned at the left side and the right side of the groove; when the third cutoff block and the third spring move towards the inside of the groove under the action of oil pressure, the two branch oil passages are communicated with the oil passage of the base.

Further, after the scroll compressor stops working, the oil passing channel is closed, refrigerating machine oil is reserved in a middle oil hole of the crankshaft positioned at the oil outlet end of the oil passing channel, and the reserved refrigerating machine oil is used for supplying oil to the pump body when the scroll compressor is started again.

According to another aspect of the present application, an embodiment of the present invention provides an air conditioner including the scroll compressor described above.

Compared with the prior art, the scroll compressor has at least the following beneficial effects:

firstly, arranging an oil control assembly at the lower end of a crankshaft, wherein the oil control assembly and a middle oil hole of the crankshaft form an oil passing channel, and when the operating frequency of the scroll compressor changes, the opening degree of the oil passing channel changes along with the oil passing channel; therefore, the opening degree of the oil passing channel is matched with the running frequency of the compressor, and the opening degree of the oil passing channel directly influences the oil supply amount, so that the matching of the oil supply amount and the running frequency of the compressor is realized, the problem of dry grinding caused by insufficient oil supply is avoided, and the problem of reduction of the refrigerating capacity caused by overlarge lubricating oil amount is also avoided.

Secondly, in the scroll compressor in the traditional technology, the pump body part of the compressor is often arranged at the upper position of the compressor, when the compressor is started, because of a longer pumping distance, the refrigerating machine oil can be supplied to the upper pump body of the compressor for a longer time, and in the period of time, the pump body of the compressor is in a state of less oil or even dry grinding, so that the service life of the compressor is seriously influenced; when the compressor stops working, the oil passage is immediately closed, so that the refrigerating machine oil is reduced to flow back to the oil pool to the maximum extent, part of the refrigerating machine oil is reserved in the middle oil hole of the crankshaft, and the part of the refrigerating machine oil can be used for supplying oil to a faster pump body when the scroll compressor is restarted, so that the influence on the service performance caused by dry grinding of the pump body of the compressor is avoided.

On the other hand, the air conditioner provided by the invention is designed based on the scroll compressor, and the beneficial effects of the air conditioner refer to the beneficial effects of the scroll compressor, which are not described herein again.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of a scroll compressor according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an oil control assembly in a scroll compressor according to an embodiment of the present invention, when the flow control unit is in a first configuration;

FIG. 3 is an exploded view of an oil control assembly in a scroll compressor according to an embodiment of the present invention, when the flow control unit has a first configuration;

FIG. 4a is a diagram illustrating a state in which the scroll compressor is stopped after being started when the flow control unit has a first configuration in the scroll compressor according to the embodiment of the present invention;

FIG. 4b is an enlarged view of a portion of FIG. 4a at A;

FIG. 5a is a diagram illustrating the operation of a scroll compressor in a low frequency state when a flow control unit has a first configuration according to an embodiment of the present invention;

FIG. 5B is an enlarged view of a portion of FIG. 5a at B;

FIG. 6 is a cross-sectional view of a scroll compressor in which the flow control unit is in an open configuration when the flow control unit is in a first configuration according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view of a scroll compressor in which the flow control unit is in a closed position when the flow control unit is in a first configuration according to an embodiment of the present invention;

FIG. 8 is a cross-sectional view of the oil control assembly in a scroll compressor according to an embodiment of the present invention when the flow control unit is in a second configuration;

FIG. 9 is an exploded view of an oil control assembly in a scroll compressor according to an embodiment of the present invention, when the flow control unit has a second configuration;

FIG. 10 is a cross-sectional view of a scroll compressor in which the flow control unit is in a closed configuration when the flow control unit is in a second configuration according to an embodiment of the present invention;

FIG. 11 is a sectional view of a scroll compressor in which the flow control unit is in an open position when the flow control unit is in a second configuration according to an embodiment of the present invention;

FIG. 12 is a cross-sectional view of an oil control assembly in a scroll compressor according to an embodiment of the present invention when the flow control unit has a third configuration;

FIG. 13 is an exploded view of an oil control assembly in a scroll compressor according to an embodiment of the present invention when the flow control unit has a third configuration;

FIG. 14 is a sectional view of a scroll compressor in which the flow control unit is in a closed configuration when the flow control unit is in a third configuration according to an embodiment of the present invention;

FIG. 15 is a sectional view of a scroll compressor in which the flow control unit is in an open state when the flow control unit is in a third configuration according to an embodiment of the present invention.

Wherein:

100. a crankshaft; 200. an oil control assembly; 300. an oil passing channel; 400. a housing assembly; 500. a lower bracket; 600. a compression assembly; 201. an upper cover; 202. a base; 203. a flow control unit; 204. a groove; 601. a static scroll pan; 602. a movable scroll pan; 2031. a first cutoff block; 2032. a first spring; 2033. a second cutoff block; 2034. a third cut-off block; 2035. and a third spring.

Detailed Description

To further explain the technical means and effects of the present invention adopted to achieve the predetermined object, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the description of the present invention, it is to be understood that the terms "vertical", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not mean that the device or member to which the present invention is directed must have a specific orientation or position, and thus, cannot be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

The present embodiment provides a scroll compressor, as shown in fig. 1, including a crankshaft 100 and an oil control assembly 200, wherein the oil control assembly 200 is disposed at the lower end of the crankshaft 100, and an oil passage 300 is formed by the oil control assembly 200 and a middle oil hole of the crankshaft 100; the operation frequency of the scroll compressor is positively correlated with the opening degree of the oil passing passage 300.

Like this, adopt above-mentioned structure, the opening of crossing oil passageway 300 is positive correlation with the operating frequency of compressor, and the opening of crossing oil passageway 300 directly influences the oil supply volume, and consequently this embodiment has realized that the oil supply volume matches with the operating frequency of compressor, has avoided the not enough problem that leads to dry grinding of fuel feeding, has also avoided the too big problem that leads to the cooling capacity to descend of lubricating oil mass simultaneously.

Moreover, because the opening degree of the oil passing channel 300 is positively correlated with the operating frequency of the compressor, when the scroll compressor operates at a lower frequency, the oil passing channel 300 is partially opened, the amount of the refrigerating machine oil flowing to the pump body is controlled, and the refrigeration performance of the compressor is prevented from being reduced due to excessive refrigerating machine oil; when the scroll compressor operates at a high frequency, the oil passing channel 300 is fully opened, the amount of the refrigerating machine oil flowing to the pump body is increased, and insufficient lubrication caused by too little refrigerating machine oil is avoided.

In addition, in the scroll compressor in the conventional technology, the pump body part of the compressor is often arranged at the upper position of the compressor, when the compressor is started, because of a longer pumping distance, the refrigerating machine oil can be supplied to the upper pump body of the compressor for a longer time, and in the period of time, the pump body of the compressor is in a state of less oil or even dry grinding, so that the service life of the compressor is seriously influenced; in the embodiment, after the compressor stops working, the oil passing channel 300 is closed immediately, so that the refrigerating machine oil is reduced to flow back to the oil pool to the greatest extent, and part of the refrigerating machine oil is reserved in the middle oil hole of the crankshaft 100 and can be used for supplying oil to a faster pump body when the scroll compressor is restarted, and the influence on the use performance caused by dry grinding of the pump body of the compressor is avoided.

In a specific embodiment:

as shown in fig. 2 and 3, the oil control assembly 200 includes an upper cover 201, a base 202, and a flow control unit 203, the upper cover 201 contacts with the base 202, at least one contact surface is provided with a groove 204, the flow control unit 203 is disposed in the groove 204, the upper cover 201 and the base 202 are both provided with oil passages, and the two oil passages form an oil passage 300.

Specifically, when the scroll compressor is operated, the flow control unit 203 moves to the outside along the groove 204 under the action of centrifugal force or/and oil supply pressure, so that the oil passage of the upper cover 201 and the oil passage of the base 202 are communicated, and the oil passing passage 300 is opened, and the degree of opening of the oil passing passage 300 depends on the magnitude of the centrifugal force or/and the oil supply pressure.

In an embodiment, the flow control unit 203 has at least the following three specific structures:

first, as shown in fig. 2 and 3, a part of the groove 204 is opened on the lower surface of the upper cover 201, and another part is opened on the upper surface of the base 202; the groove 204 is horizontally arranged and one end close to the oil passing channel 300 is communicated with the oil passing channel 300.

The flow control unit 203 includes a first cut-off block 2031 and a first spring 2032, one end of the first spring 2032 is in contact with a side wall of the groove 204, the other end is in contact with one end of the first cut-off block 2031, and the other end of the first cut-off block 2031 is used for controlling the opening degree of the oil passing passage 300.

Thus, when the scroll compressor is operated, the first cut off block 2031 is moved to a side away from the center of the crankshaft 100 by a centrifugal force generated by the rotation, the first spring 2032 is compressed along with the movement of the first cut off block 2031, the oil passing passage 300 is gradually opened, and the refrigerating machine oil flows to the pump body of the compressor through the oil passing passage 300 having a limited area, as shown in fig. 5a and 5b, the frequency of the compressor is low at this time, and the area of the oil passing passage 300 is limited, so that the oil supply amount is small, and the oil supply demand when the compressor is operated at a low frequency can be satisfied.

As the operating frequency of the compressor increases, the centrifugal force increases, the first cutoff block 2031 generates a large outward moving force, and the area of the oil passage 300 gradually increases at this time, so that the oil supply requirement during high-frequency operation of the compressor can be satisfied.

When the scroll compressor stops operating, the centrifugal force disappears, and the first spring 2032 needs to be restored to the initial state, the first spring 2032 pushes the first shut off block 2031 to move toward the center of the crankshaft 100 until the first shut off block 2031 completely blocks the oil passage 300.

Of course, the groove 204 may be completely opened on the lower surface of the upper cover 201 or the upper surface of the base 202, but in any opening method, the end of the groove 204 that is horizontally arranged and close to the oil passing channel 300 needs to be communicated with the oil passing channel 300.

When the first spring 2032 and the first shut-off block 2031 are both provided with one, in order to allow the first shut-off block 2031 to just block the oil passing channel 300 when the scroll compressor stops operating, each parameter of the first spring 2032 needs to be designed strictly to avoid that the oil passing channel 300 is not completely blocked due to insufficient or excessive restoring force.

Therefore, in specific implementation, in order to ensure that the flow control unit 203 can smoothly open and close the oil passage 300, at least two first cut-off blocks 2031 are provided, and the first springs 2032 and the first cut-off blocks 2031 are provided in one-to-one correspondence; and when the scroll compressor is not in operation, the other ends of the at least two first shut off blocks 2031 block the oil passing passage 300 by the restoring force of the first spring 2032.

Preferably, as shown in fig. 6 and 7, four first springs 2032 and four first cutoff blocks 2031 are provided, in this case, the groove 204 is a cross slide, and the four first cutoff blocks 2031 move in the cross slide; when the scroll compressor stops operating, the four first cut-off blocks 2031 slide towards the center of the crankshaft 100 under the restoring force of the corresponding first springs 2032 until the four first cut-off blocks 2031 are completely contacted, and at this time, the problem that the oil passing channel 300 is not completely blocked due to insufficient restoring force or excessive restoring force does not exist.

In the flow control unit 203 with such a structure, when the scroll compressor stops working, the centrifugal force disappears, the first spring 2032 pushes the first cutoff block 2031 to slide towards the center of the crankshaft 100 under the action of the restoring force, and the oil passing channel 300 is completely blocked, as shown in fig. 4a and 4b, at this time, a part of the refrigerating machine oil is reserved in the middle oil hole of the crankshaft 100, and the part of the refrigerating machine oil can be used for supplying oil to the pump body more quickly when the scroll compressor is restarted.

Secondly, as shown in fig. 8 and 9, a groove 204 is formed on the upper surface of the base 202; the groove 204 is obliquely arranged and one end close to the oil passing channel 300 is communicated with the oil passing channel 300.

The flow control unit 203 includes a second cutout block 2033, the second cutout block 2033 being located in the groove 204.

Like this, when scroll compressor operation, under the effect of centrifugal force, the second dams the piece 2033 and moves to the outside, under the effect of oil supply pressure, the second dams the piece 2033 and upwards moves, so under the combined action of centrifugal force and oil supply pressure, the second dams the piece 2033 and moves to oblique top along the recess 204 that the slope set up, along with the removal of second dams the piece 2033, cross oil channel 300 and be opened gradually, refrigerating machine oil flows to the pump body of compressor through the oil channel 300 of crossing of finite area, the frequency of compressor is lower this moment, and because of crossing oil channel 300 area is limited, consequently, the fuel feeding volume is also little, can satisfy the fuel feeding demand when the compressor low frequency operates.

Along with the increase of the operating frequency of the compressor, the centrifugal force becomes larger, the second intercepting block 2033 generates a larger force moving outwards, the area of the oil passing channel 300 is gradually increased at the moment, and the oil supply requirement of the compressor during high-frequency operation can be met.

When the scroll compressor stops operating for a period of time, the centrifugal force disappears, and the second intercepting block 2033 moves downward and inward under the action of its own gravity to close the oil passage 300, thereby realizing the interception of the oil supply passage of the compressor.

In the flow control unit 203 with such a structure, one part of the groove 204 may be opened on the lower surface of the upper cover 201, the other part may be opened on the upper surface of the base 202, and the groove 204 may also be completely opened on the lower surface of the upper cover 201, however, in any way, the groove 204 needs to be inclined, so that the second cut-off block 2033 disposed in the groove 204 can block the oil passage 300 by its own gravity after the scroll compressor stops working.

When one second cutout block 2033 is provided, in order to prevent the second cutout block 2033 from completely blocking the oil passing channel 300, the length of the cross section of the second cutout block 2033 should be longer than that of the oil passing channel 300.

In order to ensure that the flow control unit 203 can smoothly open and close the oil passage 300, at least two second cut-off blocks 2033 are provided; and when the scroll compressor is not in operation, the at least two second shut-off blocks 2033 block the oil passage 300 under the action of gravity.

Preferably, as shown in fig. 10 and 11, two second intercepting blocks 2033 are provided, and when the scroll compressor stops working, one ends of the two second intercepting blocks 2033 near the center of the crankshaft 100 are contacted to just completely block the oil passing channel 300, and at this time, a part of the refrigerating machine oil is reserved in the middle oil hole of the crankshaft 100, and the part of the refrigerating machine oil can be used for supplying oil to the faster pump body when the scroll compressor is started again.

Thirdly, as shown in fig. 12 and 13, the groove 204 is vertically opened on the lower surface of the first upper cover 201, the flow control unit 203 includes a third block 2034 and a third spring 2035, one end of the third spring 2035 is fixed on the groove 204, the other end is connected with one end of the third block 2034, and the other end of the third block 2034 is used for controlling the opening degree of the oil passing channel 300.

Thus, when the scroll compressor is not in operation, the third intercepting block 2034 blocks the oil passage of the base 202 under the action of its own gravity, so that the oil passing passage 300 is intercepted; when the scroll compressor is operated, the refrigerant oil is supplied to the third blocking block 2034 to generate a pressure, and the third blocking block 2034 compresses the third spring 2035 to move upward by the pressure, so that the oil passage 300 is gradually opened, and the refrigerant oil flows to the pump body of the compressor through the oil passage 300 having a limited area.

As the operating frequency of the compressor increases, the pressure generated by the supply of the refrigerating machine oil to the third cutoff block 2034 increases, and at this time, the area of the oil passing channel 300 increases gradually, so that the oil supply requirement during high-frequency operation of the compressor can be met.

When the scroll compressor stops operating for a period of time, the pressure from the refrigerating machine oil disappears, and the third shut-off block 2034 moves downward under the action of its own gravity to close the oil passage 300, thereby achieving shut-off of the oil supply passage of the compressor.

When the other end of the third cut-off block 2034 blocks the oil passage 300 under the action of gravity, the other end of the third cut-off block 2034 abuts against the end surface of the oil passage of the base 202; that is, the diameter of the oil passage of the base 202 is not greater than the length of the third intercept block 2034, for preventing the third intercept block 2034 from entering the inside of the oil passage of the base 202.

Specifically, the oil passages of the upper cover 201 include two branch oil passages located on the left and right sides of the groove 204; when the third block 2034 and the third spring 2035 are moved inward of the groove 204 by the oil supply pressure, the ends of the two branch oil passages communicate with the oil passages of the base 202.

Thus, when the scroll compressor is operated, the third block 2034 compresses the third spring 2035, and then the third block 2034 is partially or completely moved into the groove 204, and at this time, the refrigerating machine oil passes through the oil passages of the base 202 and then is collected into the middle oil hole of the crankshaft 100 from the two branch oil passages, respectively.

Similarly, when the scroll compressor stops, the third shut-off block 2034 moves downward under its own gravity to close the oil passing channel 300, and a part of the refrigerating machine oil remains in the middle oil hole of the crankshaft 100 at the oil outlet end of the oil passing channel 300, and is used to supply oil to the faster pump body when the scroll compressor is restarted.

In addition, in this embodiment, the scroll compressor further includes a housing assembly 400, and the housing assembly 400 includes a housing, an upper cover and a lower cover, which are respectively located at the upper and lower ends of the housing and detachably connected to the housing.

The scroll compressor further includes a lower bracket 500, the lower bracket 500 is fixed inside the housing by screws, and the oil control assembly 200 is fixed on the lower bracket 500.

Of course, the scroll compressor further includes a compression assembly 600, and the compression assembly 600 includes a fixed scroll 601 and an orbiting scroll 602 which are cooperatively disposed.

Example 2

The present embodiment provides an air conditioner including the scroll compressor in embodiment 1.

In summary, it is easily understood by those skilled in the art that the advantageous technical features described above can be freely combined and superimposed without conflict.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A scroll compressor, comprising:

a crankshaft (100);

the oil control assembly (200) is arranged at the lower end of the crankshaft (100), and the oil control assembly (200) and a middle oil hole of the crankshaft (100) form an oil passing channel (300);

the operation frequency of the scroll compressor is positively correlated with the opening degree of the oil passing passage (300).

2. The scroll compressor of claim 1, wherein the oil control assembly (200) comprises an upper cover (201), a base (202) and a flow control unit (203), the upper cover (201) is in contact with the base (202), at least one contact surface is provided with a groove (204), the flow control unit (203) is arranged in the groove (204), the upper cover (201) and the base (202) are both provided with oil passages, and the two oil passages form an oil passage channel (300);

when the scroll compressor runs, the flow control unit (203) moves outwards along the groove (204) under the action of centrifugal force or/and oil supply pressure, so that the oil channel of the upper cover (201) is communicated with the oil channel of the base (202), and the oil passing channel (300) is opened.

3. A scroll compressor according to claim 2, wherein a part of the groove (204) is formed in the lower surface of the upper cover (201), and the other part is formed in the upper surface of the base (202); or the groove (204) is formed in the lower surface of the upper cover (201); or the groove (204) is arranged on the upper surface of the base (202); the groove (204) is horizontally arranged, and one end of the groove close to the oil passing channel (300) is communicated with the oil passing channel (300).

4. The scroll compressor of claim 3, wherein the flow control unit (203) comprises a first cut-off block (2031) and a first spring (2032), one end of the first spring (2032) is in contact with a side wall of the groove (204), and the other end is in contact with one end of the first cut-off block (2031), and the other end of the first cut-off block (2031) is used for controlling the opening degree of the oil passing channel (300).

5. The scroll compressor of claim 4, wherein the number of the first cutoff blocks (2031) is at least two, and the first spring (2032) and the first cutoff block (2031) are arranged in one-to-one correspondence; and when the scroll compressor is not in operation, the other ends of the at least two first cut-off blocks (2031) close off the oil passing channel (300) under the restoring force of the first spring (2032).

6. A scroll compressor according to claim 2, wherein a part of the groove (204) is formed in the lower surface of the upper cover (201), and the other part is formed in the upper surface of the base (202); or the groove (204) is formed in the lower surface of the upper cover (201); or the groove (204) is arranged on the upper surface of the base (202); the groove (204) is obliquely arranged, and one end of the groove close to the oil passing channel (300) is communicated with the oil passing channel (300).

7. The scroll compressor of claim 6, wherein the flow control unit (203) comprises a second shut-off block (2033), the second shut-off block (2033) being located in the groove (204).

8. The scroll compressor of claim 7, wherein the second porting block (2033) is provided in at least two; and when the scroll compressor is not in operation, at least two second intercepting blocks (2033) block the oil passing channel (300) under the action of gravity.

9. The scroll compressor of claim 2, wherein the groove (204) opens vertically in a lower surface of the first upper cover (201).

10. The scroll compressor of claim 9, wherein the flow control unit (203) comprises a third interception block (2034) and a third spring (2035), one end of the third spring (2035) is fixed on the groove (204), the other end is connected with one end of the third interception block (2034), and the other end of the third interception block (2034) is used for controlling the opening degree of the oil passing channel (300).

11. The scroll compressor of claim 10, wherein when the other end of the third shut-off block (2034) blocks the oil passage (300) under the action of gravity, the other end of the third shut-off block (2034) abuts at an end face of the base (202) oil gallery to avoid the third shut-off block (2034) from entering inside the base (202) oil gallery.

12. The scroll compressor of claim 11, wherein the oil passage of the upper cover (201) includes two branch oil passages located on left and right sides of the groove (204); when the third cut-off block (2034) and the third spring (2035) move towards the groove (204) under the action of oil supply pressure, the two branch oil passages are communicated with the oil passage of the base (202).

13. The scroll compressor according to any one of claims 1 to 12, wherein the oil passing passage (300) is closed after the operation of the scroll compressor is stopped, and the refrigerating machine oil is reserved in a middle oil hole of the crankshaft (100) at an oil outlet end of the oil passing passage (300).

14. An air conditioner, characterized in that the air conditioner comprises a scroll compressor according to any one of claims 1 to 13.