CN114017332A

CN114017332A - Rotary compressor and refrigeration equipment with same

Info

Publication number: CN114017332A
Application number: CN202111313363.7A
Authority: CN
Inventors: 宋世功; 邓志强; 张肃
Original assignee: Guangdong Meizhi Compressor Co Ltd; Guangdong Meizhi Precision Manufacturing Co Ltd
Current assignee: Guangdong Meizhi Compressor Co Ltd; Guangdong Meizhi Precision Manufacturing Co Ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-02-08
Anticipated expiration: 2041-11-08
Also published as: CN114017332B

Abstract

The invention belongs to the technical field of compressors, and particularly discloses a rotary compressor and refrigeration equipment with the same, wherein the rotary compressor comprises an outer shell, an inner shell, a pump body assembly and an air suction pipe, a partition plate is arranged in the outer shell, the partition plate divides an inner cavity of the outer shell into an upper cavity and a lower cavity, and the partition plate is provided with a second mounting hole; the inner shell is connected with the outer shell and is positioned in the upper cavity; the pump body assembly is arranged in the inner shell and comprises a lower bearing, and the lower bearing is provided with a first mounting hole; one end of the air suction pipe penetrates through the first mounting hole, and the other end of the air suction pipe penetrates through the second mounting hole and is communicated with the lower cavity; wherein, be provided with in the first mounting hole with breathing pipe interference fit's first annular sealing member, be provided with in the second mounting hole with breathing pipe interference fit's second annular sealing member, set up from this and can reach good sealed effect, can reduce the vibration transmission of the outside casing of pump body subassembly simultaneously, promote the reliability of refrigerating system pipeline, improve the noise problem that produces by the vibration.

Description

Rotary compressor and refrigeration equipment with same

Technical Field

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

Background

In the rotary compressor, the motor does not need to convert the rotary motion of the rotor into the reciprocating motion of the piston, but directly drives the rotary piston to rotate to complete the compression of the refrigerant vapor. The compressor is more suitable for small refrigeration equipment, and particularly, is more widely applied to household air conditioners.

The rotary compressor comprises a shell, a pump body assembly, a motor, an air suction pipe and other components, wherein the reliability of a system pipeline of the refrigeration equipment can be influenced by vibration problems between the pump body assembly, the motor and other moving components and the shell of the rotary compressor, for example, the tightness of a joint of the air suction pipe, and the use experience of a user can also be influenced by noise problems generated by vibration.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a rotary compressor, which can realize the sealing of a suction pipe joint under preset pressure and improve the vibration and noise reduction effect of the rotary compressor.

The invention also provides refrigeration equipment with the rotary compressor.

The rotary compressor comprises an outer shell, an inner shell, a pump body assembly and an air suction pipe, wherein a partition plate is arranged inside the outer shell, the partition plate divides an inner cavity of the outer shell into an upper cavity and a lower cavity, and the partition plate is provided with a second mounting hole; the inner shell is connected with the outer shell and is positioned in the upper cavity; the pump body assembly is arranged in the inner shell and comprises a lower bearing, and the lower bearing is provided with a first mounting hole; one end of the air suction pipe penetrates through the first mounting hole, and the other end of the air suction pipe penetrates through the second mounting hole and is communicated with the lower cavity; the first mounting hole is internally provided with a first annular sealing element in interference fit with the air suction pipe, and the second mounting hole is internally provided with a second annular sealing element in interference fit with the air suction pipe.

The rotary compressor provided by the embodiment of the invention has at least the following beneficial effects: through be provided with in first mounting hole with breathing pipe interference fit's first annular sealing member, be provided with in the second mounting hole with breathing pipe interference fit's second annular sealing member, wear to locate in the first mounting hole with the one end of breathing pipe, the other end is worn to locate in the second mounting hole, can make breathing pipe and first annular sealing member and second annular sealing member form the cooperation and reach good sealed effect, can reduce the vibration transmission of the outside casing of pump body subassembly simultaneously, promote the reliability of refrigerating system pipeline, improve the noise problem that produces by the vibration.

According to the rotary compressor of some embodiments of the present invention, an inner wall of the first mounting hole is provided with a first annular groove for receiving the first annular seal; and a second annular groove for accommodating the second annular sealing element is formed in the inner wall of the second mounting hole.

According to the rotary compressor of some embodiments of the present invention, the first mounting hole includes a first hole facing the partition plate and a second hole facing away from the partition plate, a diameter d1 of the first hole, a diameter d2 of the second hole, and an outer diameter d5 of the suction pipe satisfy: d2 < d5 < d 1;

the second mounting hole comprises a third hole facing the lower bearing and a fourth hole facing away from the lower bearing, and the diameter d3 of the third hole, the diameter d4 of the fourth hole and the d5 satisfy: d4 < d5 < d 3; wherein the first annular groove is provided in an inner wall of the first hole, and the second annular groove is provided in an inner wall of the third hole.

According to the rotary compressor of some embodiments of the present invention, the d5 and the d1 satisfy: the thickness of the film is not less than 0.05mm (d1-d5) not more than 0.2 mm;

the d5 and the d3 satisfy: is not less than 0.05mm (d3-d5) not more than 0.2 mm.

According to the rotary compressor of some embodiments of the present invention, the outer diameter d6, the inner diameter d7 of the first annular seal and the diameter d8 of the first annular groove satisfy: 0.02(d6-d7) to 0.08(d6-d7) to (d6-d 8);

the outer diameter d9, inner diameter d10 of the second annular seal and diameter d11 of the second annular groove satisfy: 0.025(d9-d10) to 0.08(d9-d10) to (d9-d 11).

According to the rotary compressor of some embodiments of the present invention, the outer diameter d6, the inner diameter d7 of the first annular seal and the height h1 of the first annular groove in the axial direction of the first hole satisfy: (d6-d7)/2+0.2mm) h1 (d6-d7)/2+2mm) is less than or equal to;

an outer diameter d9, an inner diameter d10 of the second annular seal and a height h2 of the second annular groove along an axial direction of the second bore satisfy: ((d9-d10)/2+0.2mm) ≦ h2 ≦ ((d9-d10)/2+2 mm).

According to the rotary compressor of some embodiments of the present invention, the first hole and the second hole have a first thrust surface therebetween, the third hole and the fourth hole have a second thrust surface therebetween, and a distance d12 between the first thrust surface and the second thrust surface and the suction pipe length L satisfies: the thickness of the film is not less than 0.2mm (d12-L) and not more than 2 mm.

According to the rotary compressor of some embodiments of the present invention, the inner diameter d7 of the first ring seal and the outer diameter d5 of the suction pipe satisfy: the thickness of the film is not less than 0.2mm (d5-d7) not more than 0.8 mm;

the inner diameter d10 of the second annular seal and the outer diameter d5 of the suction pipe satisfy: is less than or equal to 0.2mm (d5-d10) and less than or equal to 0.8 mm.

According to the rotary compressor of some embodiments of the present invention, the outer diameter d6 and the inner diameter d7 of the first annular seal satisfy: (d6-d7) of 2mm or less and (d) 2mm or less and 5mm or less;

an outer diameter d9 and an inner diameter d10 of the second annular seal satisfy: d9-d10 of 2mm or less and 5mm or less.

The refrigeration equipment according to the second aspect embodiment of the invention comprises the rotary compressor according to the first aspect embodiment of the invention.

The refrigeration equipment provided by the embodiment of the invention has at least the following beneficial effects: through adopting the rotary compressor of the first aspect embodiment, its vibration is less, and sealed effectual, can promote the reliability of refrigerating system pipeline, improves the noise problem by the vibration production to promote refrigeration plant's wholeness ability.

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 invention is further described with reference to the following figures and examples, in which:

fig. 1 is a sectional view of a rotary compressor according to some embodiments of the present invention;

FIG. 2 is a partial schematic view of FIG. 1 at A;

FIG. 3 is a sectional view of a lower bearing of the rotary compressor according to some embodiments of the present invention;

FIG. 4 is a sectional view of a partition plate of a rotary compressor according to some embodiments of the present invention;

FIG. 5 is a schematic view of a first annular seal of a rotary compressor in accordance with certain embodiments of the present invention;

FIG. 6 is a schematic structural view of a second annular seal of the rotary compressor in accordance with some embodiments of the present invention;

fig. 7 is a flow chart illustrating an assembly process of a sealing structure of a rotary compressor according to some embodiments of the present invention.

Reference numerals:

the rotary compressor comprises a rotary compressor 100, an outer shell 101, an inner shell 102, a gas suction pipe 103, a motor 104, a pump body assembly 105, a partition plate 106, an upper cavity 107, a lower cavity 108, a lower bearing 109, a gas inlet pipe 110, a flexible piece 111 and a cylinder 112;

first and second

annular seals

201, 202;

a first hole 301, a second hole 302, a first annular groove 303;

a third bore 401, a fourth bore 402, a second annular groove 403.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to, for example, the upper, lower, inner, outer, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are first, second, third and fourth described only for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

The rotary compressor is a compressor widely applied to refrigeration equipment at present, and a motor of the rotary compressor directly drives a piston to rotate to complete compression of a refrigerant without converting the rotating motion of a rotor into reciprocating motion of the piston.

The main advantages of the rotary compressor are: because the piston rotates, the compression work is smooth, stable and balanced.

In addition, the rotary air compressor has no clearance volume and no interference of re-expansion gas, so that the rotary air compressor has the advantages of high compression efficiency, few parts, small volume, light weight, good balance performance, low noise, complete protection measures, low power consumption and the like. With the progress of technology, the rotary compressor has obvious advantages over other types of compressors, and is widely applied to household air conditioners, refrigerators and other electric appliances.

In the related art, the rotary compressor includes a housing, a pump body assembly, a motor, and a suction pipe, wherein a connection portion of a port of the suction pipe needs to satisfy a sealing property under a certain pressure, for example, a sealing property under a pressure of 3MPa to 4 MPa.

In addition, the reliability of the refrigerating system pipeline can be influenced by the vibration problem between the pump body assembly, the motor and other moving parts and the shell of the rotary compressor, the sealing performance of the connection position of the air suction pipe is included, the use experience of a user can be greatly influenced by the medium-high frequency noise generated by vibration, and the overall quality of the refrigerating equipment is influenced.

To this end, some embodiments of the first aspect of the invention propose a rotary compressor 100, illustrated in particular with reference to figures 1 to 6 of the accompanying drawings.

Referring to fig. 1 and 2, in some embodiments, the rotary compressor 100 includes an outer casing 101, an inner casing 102, a pump body assembly 105, a suction pipe 103, and the like.

Specifically, referring to fig. 1 to 3, an inner cavity is formed inside an outer shell 101 of the rotary compressor 100 of the present invention, a partition 106 is disposed in the inner cavity, and the partition 106 divides the inner cavity of the outer shell 101 into an upper cavity 107 and a lower cavity 108; the inner housing 102 is connected to the outer housing 101, and the inner housing 102 is located in the upper chamber 107; a pump body assembly 105 is also disposed within the inner housing 102; the suction pipe 103 has one end connected to the pump body assembly 105 and the other end connected to the partition 106, and the lower end of the suction pipe 103 communicates with the lower chamber 108.

Referring to fig. 1, 2 and 3, it should be noted that the pump body assembly 105 includes a cylinder 112 and a lower bearing 109 connected to a lower side of the cylinder 112, the lower bearing 109 has a first mounting hole, the air suction pipe 103 is connected to the first mounting hole, and the air suction pipe 103 is communicated with an inside of the cylinder 112, and finally, the gas to be compressed in the lower cavity 108 can enter the inside of the cylinder 112 through the air suction pipe 103.

Referring to fig. 1, 2 and 3, it should be noted that the partition 106 is provided with a second mounting hole, one end of the air suction pipe 103 penetrates through the first mounting hole, and the other end of the air suction pipe 103 penetrates through the second mounting hole and is communicated with the lower cavity 108; wherein, a first annular sealing element 201 which is in interference fit with the air suction pipe 103 is arranged in the first mounting hole, and a second annular sealing element 202 which is in interference fit with the air suction pipe 103 is arranged in the second mounting hole.

In the prior art, when the air suction pipe 103 is rigidly fixed in the first mounting hole of the pump body assembly 105, the vibration can be easily transmitted to the air suction pipe 103, and then the air suction pipe 103 transmits the vibration outwards; with the arrangement, the vibration of the pump body assembly 105 can be reduced to be transmitted to the suction pipe 103 by the first annular sealing piece 201, and simultaneously, the vibration of the suction pipe 103 directly transmitted to the partition plate 106 is reduced by the first annular sealing piece 201, so that the vibration transmission of the pump body assembly to the outer shell is reduced, the reliability of a refrigerating system pipeline is improved, and the noise problem caused by vibration is improved.

Through experiments, compared with a common rigid connection mode, the noise can be reduced by more than 30% by adopting the arrangement.

On the other hand, through the arrangement, the air suction pipe 103 can be matched with the first annular sealing element 201 and the second annular sealing element 202 to achieve a good sealing effect, and the required sealing performance of the connecting end of the air suction pipe 103 when the pressure is 3 to 4MPa is met.

It is understood that the inside of the outer shell 101 of the rotary compressor 100 is also provided with the motor 104 (shown in fig. 1) and some piping systems, and the lower part of the outer shell 101 is also connected with an air inlet pipe 110, and the air inlet pipe 110 is communicated with the lower cavity 108 of the outer shell 101 for providing the lower cavity 108 with the gas to be compressed.

It is understood that the first and second

annular seals

201 and 202 may be made of nitrile butadiene rubber, ethylene propylene diene monomer rubber, viton rubber, silicone rubber, fluorosilicone rubber, nylon, polyurethane, engineering plastics, or the like.

In addition, in order to reduce the transmission of vibration noise to the outside, the casing of the rotary compressor 100 is provided with the outer casing 101 and the inner casing 102, so that a barrier for preventing sound from being transmitted to the outside can be added, and the motor 104 and the pump assembly 105 are arranged inside the inner casing 102, so that the vibration of the motor 104 and the pump assembly 105 can be prevented from being directly transmitted to the outer casing 101, and the overall performance of the rotary compressor 100 can be improved.

Referring to fig. 3, in order to limit the position of the first annular sealing element 201, the inner wall of the first mounting hole is provided with a first annular groove 303 for accommodating the first annular sealing element 201, and it can be understood that the first annular sealing element 201 and the first annular groove 303 are in an interference fit state in the radial direction, so that the sealing and vibration damping effects of the first annular sealing element 201 are realized.

Accordingly, to retain the second annular seal 202, the inner wall of the second mounting hole is provided with a second annular groove 403 for receiving, and it will also be appreciated that the second annular seal 202 and the second annular groove 403 are in an interference fit in the radial direction, thereby achieving the sealing and damping effect of the second annular seal 202.

It should be noted that two, three, four or more annular grooves may be formed in the inner walls of the first mounting hole and the second mounting hole, and an annular sealing member is correspondingly disposed in the annular groove, and the annular groove is used for accommodating the annular sealing member and has a certain positioning effect on the annular sealing member.

It can be understood that the more the number of the ring-shaped sealing members is, the better sealing effect can be achieved on the connecting section of the air suction pipe 103.

It will be appreciated that the diameters of the first annular groove 303 and the second annular groove 403 may be equal or different, as long as the corresponding sealing effect is achieved, and the same first annular seal 201 and second annular seal 202 may be equal or different in size.

In some embodiments, referring to fig. 1, the inner housing 102 is connected to the outer housing 101 by a flexible member 111. The flexible member 111 can buffer the vibration, so that the vibration of the inner housing 102 is buffered by the flexible member 111, thereby preventing the vibration of the motor 104 and the pump assembly 105 from being directly transmitted to the outer housing 101.

It should be noted that the flexible member 111 is a flexible element, such as a flexible connector for a pipe, which may have relatively small rigidity in six directions, and can be slightly deformed by a force.

Specifically, the flexible member 111 may be made of rubber, gel, elastic plastic, or the like.

It should be noted that, referring to fig. 1, the inner housing 102 is provided as a cylindrical structure, and both ends of the cylindrical structure are connected to the outer housing 101 through the flexible members 111, respectively.

Therefore, the shell structure of the rotary compressor 100 can be simply constructed, the shell structure of the rotary compressor 100 can be more stable, the vibration transmission of the motor 104 and the pump body assembly 105 is reduced, and the leakage of noise is reduced.

It will also be appreciated that, not shown, the bulkhead 106 is provided with bosses (not shown) and the second mounting holes are provided in the bosses. With this arrangement, the structural strength of the partition plate 106 itself can be increased, and the service life of the rotary compressor 100 can be prolonged.

Similarly, not shown, the lower bearing 109 may also be provided with a boss (not shown), and the second mounting hole is provided in the boss.

In some embodiments, referring to fig. 3, the first mounting hole and the second mounting hole are both configured as stepped holes, and the upper end and the lower end of the air suction pipe 103 can be well positioned by the stepped holes, so that the air suction pipe 103 is prevented from moving out of the mounting position in the use process.

Specifically, referring to fig. 3, the first mounting holes include a first hole 301 facing the partition 106 and a second hole 302 facing away from the partition 106, and a diameter d1 of the first hole 301, a diameter d2 of the second hole 302, and an outer diameter d5 of the suction pipe 103 satisfy the formula one:

d2 < d5 < d1 (formula one);

with this arrangement, the suction pipe 103 can be prevented from coming out of the second hole 302.

Meanwhile, the second mounting hole includes a third hole 401 facing the lower bearing 109 and a fourth hole 402 facing away from the lower bearing 109, and a diameter d3 of the third hole 401, a diameter d4 of the fourth hole 402, and an outer diameter d5 of the suction pipe 103 satisfy formula two:

d4 < d5 < d3 (formula two);

Wherein the first annular groove 303 is disposed on an inner wall of the first hole 301, and the second annular groove 403 is disposed on an inner wall of the third hole 401.

Through the arrangement, the upper end of the air suction pipe 103 can be limited by the thrust surface between the first hole 301 and the second hole 302; the lower end of the suction pipe 103 is limited by a thrust surface between the third hole 401 and the fourth hole 402.

It will be appreciated that the first annular seal 201 is arranged to have an interference fit with the suction pipe 103 for better sealing effect, and that the first annular seal 201 needs to have a clearance fit with the suction pipe 103 in order to fit the installation of the first annular seal 201.

Specifically, in some embodiments, referring to fig. 2, 3, and 5, the outer diameter d5 of the air intake duct 103 and the diameter d1 of the first hole 301 satisfy the formula three:

the thickness of the steel is more than or equal to 0.05mm (d1-d5) and less than or equal to 0.2mm (formula III);

it will be appreciated that (d1-d5) may be set to 0.05mm, 0.08mm, 0.15mm or 0.2mm etc., thereby setting the mounting position for the mounting of the first annular seal 201.

Similarly, referring to fig. 2, 4 and 5, the outer diameter d5 of the air intake pipe 103 and the diameter d3 of the third hole 401 satisfy the formula four:

0.05mm is less than or equal to (d3-d5) is less than or equal to 0.2mm (formula IV).

It will be appreciated that (d3-d5) may be set at 0.05mm, 0.08mm, 0.15mm, 0.2mm, etc.

It should be noted that, referring to fig. 2, 3, and 5, the outer diameter d6 of the first annular seal 201, the inner diameter d7 of the first annular seal 201, and the diameter d8 of the first annular groove 303 satisfy the formula:

0.02(d6-d7) is less than or equal to (d6-d8) is less than or equal to 0.08(d6-d7) (formula five);

similarly, referring to fig. 2, 4, and 5, outer diameter d9 of second annular seal 202, inner diameter d10 of second annular seal 202, and diameter d11 of second annular groove 403 satisfy the equation six:

0.025(d9-d10) is less than or equal to (d9-d11) is less than or equal to 0.08(d9-d10) (formula six).

It can be understood that the thickness of the first annular seal 201 and the diameter d8 of the first annular groove 303 satisfy the fifth formula, and the thickness of the second annular seal 202 and the diameter d11 of the second annular groove 403 satisfy the sixth formula, so that the vibration isolation effect of the first annular seal 201 and the second annular seal 202 is improved while the good sealing effect is achieved.

It should be further noted that, in some embodiments, the first annular sealing element 201 is axially clearance-fitted with the first annular groove 303, and the second annular sealing element 202 is axially clearance-fitted with the second annular groove 403, so that the arrangement enables a certain play of the air suction pipe 103 in the axial direction, and when the pump body assembly 105 is operated, the air suction pipe 103 has a certain vibration release space in the axial direction when vibrating, thereby improving the damping performance of the whole sealing structure.

Specifically, in some embodiments, referring to fig. 3 and 5, outer diameter d6 of first annular seal 201, inner diameter d7 of first annular seal 201, and height h1 of first annular groove 303 in the axial direction of first bore 301 satisfy formula seven:

((d6-d7)/2+0.2mm) ≦ h1 ≦ ((d6-d7)/2+2mm) (formula seven).

Similarly, referring to fig. 4 and 6, the outer diameter d9 of second annular seal 202, the inner diameter d10 of second annular seal 202, and the height h2 of second annular groove 403 in the axial direction of second bore 302 satisfy the equation eight:

((d9-d10)/2+0.2mm) ≦ h2 ≦ ((d9-d10)/2+2mm) (formula eight).

It can be understood that formula seven shows the structural relationship between the first annular seal 201 and the first annular groove 303 in the axial direction, formula eight shows the structural relationship between the second annular seal 202 and the second annular groove 403 in the axial direction, if the sizes of h1 and h2 are too small, the good vibration damping effect cannot be achieved, and if the sizes of h1 and h2 are too large, the sealing effect of the sealing structure is reduced.

It is necessary that, in order to achieve a good sealing effect, after the first annular sealing member 201 and the second annular sealing member seal the air suction pipe 103, the sealing performance can be good under a certain pressure (for example, 3MPa to 4MPa), and the inner diameter d7 of the first annular sealing member 201 and the outer diameter d5 of the air suction pipe 103 satisfy the formula nine (see fig. 3 and 5):

0.2mm (d5-d7) is less than or equal to 0.8mm (formula nine).

It will be appreciated that (d5-d7) may be set at 0.2mm, 0.4mm, 0.6mm or 0.8mm, etc.

Similarly, referring to fig. 4 and 5, the inner diameter d10 of the second annular seal 202 and the outer diameter d5 of the suction pipe 103 satisfy the formula ten:

the thickness of the steel is less than or equal to 0.2mm (d5-d10) and less than or equal to 0.8mm (formula ten).

It will be appreciated that (d5-d10) may be set at 0.2mm, 0.4mm, 0.6mm or 0.8mm, etc.

It is understood that the first and second

annular seals

201, 202 may be the same size or different sizes, provided that the above equations nine and ten are satisfied.

It will also be appreciated that if the sizes of (d5-d7) and (d5-d10) are too small, a good sealing effect cannot be achieved, and if the sizes of (d5-d7) and (d5-d10) are too large, the vibration isolation effect of the first annular seal 201 and the second annular seal 202 is reduced, and it is inconvenient to fit the first annular seal 201 and the second annular seal 202 on the air intake pipe 103.

Referring to fig. 5, the outer diameter d6 of the first annular seal 201 and the inner diameter d7 of the first annular seal 201 satisfy the formula eleven:

d6-d7 with the length of 2mm being less than or equal to 2 mm/5 mm (formula eleven);

it will be appreciated that (d6-d7) may be set at 2mm, 4mm or 5mm, etc.

Likewise, outer diameter d9 of second annular seal 202 and inner diameter d10 of second annular seal 202 satisfy the equation twelve:

d9-d10 of 2mm or less and 5mm or less of 2mm (formula twelve).

It will be appreciated that (d9-d10) may be set at 2mm, 4mm or 5mm, etc.

It will also be appreciated that the thicknesses (d6-d7) and (d9-d10) respectively represent the thicknesses of the first and second

annular seals

201 and 202, and that if the thicknesses of the first and second

annular seals

201 and 202 are too thin, a good sealing effect cannot be achieved, and that if the thicknesses of the first and second

annular seals

201 and 202 are too thick, the vibration isolation effect of the first and second

annular seals

201 and 202 is reduced.

It should be further noted that the distance d12 between the first thrust surface and the second thrust surface and the length L of the intake pipe 103 satisfy the formula thirteen:

d12-L is not less than 0.2mm and not more than 2mm (formula thirteen).

It will be appreciated that (d12-L) may be set to 0.2mm, 0.8mm, 1mm or 2mm, etc.

It can be understood that the first annular sealing member 201 is in clearance fit with the first annular groove 303 in the axial direction, and the second annular sealing member 202 is in clearance fit with the second annular groove 403 in the axial direction, so as to provide a certain play margin for the air suction pipe 103 in the axial direction, when the pump body assembly 105 is in operation, the air suction pipe 103 has a certain vibration release space in the axial direction when vibrating, thereby improving the buffering performance of the whole sealing structure, and similarly, in order to fit the above structure, the vibration of the air suction pipe 103 in the axial direction needs to be limited within a certain range, so as to prevent the air suction pipe 103 from being separated from the effective sealing area.

The assembling process of the above-described sealing structure of the lower rotary compressor 100 will be described with reference to fig. 1 and 2.

Referring to fig. 7, the assembly process includes the steps of:

step S710: placing a first annular seal 201 and a second annular seal 202 in a first mounting hole of the lower bearing 109 and a second mounting hole of the bulkhead 106, respectively;

step S720: inserting the suction pipe 103 into the second mounting hole of the partition 106;

step S730: integrally placing the inner shell 102 and the pump body assembly 105 attached with the air suction pipe 103 on the partition plate 106, and enabling the air suction pipe 103 to penetrate through a first mounting hole of the lower bearing 109;

step S740: the inner case 102 is put into the outer case 101 as a whole.

A refrigeration apparatus (not shown en route) according to an embodiment of the second aspect of the present invention comprises a rotary compressor 100 according to an embodiment of the first aspect of the present invention.

It should be noted that the refrigeration device of the present invention may be a household air conditioner or a refrigerator, etc., the motor of the rotary compressor does not need to convert the rotation motion of the rotor into the reciprocating motion of the piston, but directly drives the piston to make the rotation motion to complete the compression of the refrigerant, and the rotary compressor is more suitable for household air conditioners, refrigerators, etc.

The refrigeration equipment provided by the embodiment of the invention has at least the following beneficial effects: in the rotary compressor of the embodiment of the first aspect, the first annular sealing element 201 in interference fit with the air suction pipe 103 is arranged in the first mounting hole, the second annular sealing element 202 in interference fit with the air suction pipe 103 is arranged in the second mounting hole, one end of the air suction pipe 103 is arranged in the first mounting hole in a penetrating manner, the other end of the air suction pipe 103 is arranged in the second mounting hole in a penetrating manner, the air suction pipe 103 can be matched with the first annular sealing element 201 and the second annular sealing element 202 to achieve a good sealing effect, meanwhile, the vibration transmission of the pump body assembly 105 to the outer shell 101 can be reduced, the reliability of a refrigeration equipment pipeline is improved, the noise problem caused by vibration is improved, and by adopting the rotary compressor 100 of the embodiment of the first aspect, the reliability of the refrigeration equipment pipeline can be improved, the noise problem caused by vibration is improved, and the overall performance of the refrigeration equipment is improved.

The embodiments of the present invention are described in detail above with reference to the accompanying drawings, and finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rotary compressor, characterized by comprising:

the inner cavity of the outer shell is divided into an upper cavity and a lower cavity by the partition plate, and the partition plate is provided with a second mounting hole;

an inner housing connected to the outer housing and located in the upper chamber;

the pump body assembly is arranged in the inner shell and comprises a lower bearing, and the lower bearing is provided with a first mounting hole;

one end of the air suction pipe penetrates through the first mounting hole, and the other end of the air suction pipe penetrates through the second mounting hole and is communicated with the lower cavity;

the first mounting hole is internally provided with a first annular sealing element in interference fit with the air suction pipe, and the second mounting hole is internally provided with a second annular sealing element in interference fit with the air suction pipe.

2. The rotary compressor of claim 1, wherein an inner wall of the first mounting hole is provided with a first annular groove for receiving the first annular seal; and a second annular groove for accommodating the second annular sealing element is formed in the inner wall of the second mounting hole.

3. The rotary compressor of claim 2, wherein the first mounting hole comprises a first hole facing toward the partition plate and a second hole facing away from the partition plate, and a diameter d1 of the first hole, a diameter d2 of the second hole, and an outer diameter d5 of the suction pipe satisfy: d2 < d5 < d 1;

4. The rotary compressor of claim 3, wherein the d5 and d1 satisfy: the thickness of the film is not less than 0.05mm (d1-d5) not more than 0.2 mm;

5. The rotary compressor of claim 3, wherein the outer diameter d6, inner diameter d7 of the first annular seal and the diameter d8 of the first annular groove satisfy: 0.02(d6-d7) to 0.08(d6-d7) to (d6-d 8);

6. The rotary compressor of claim 3, wherein an outer diameter d6, an inner diameter d7 of the first annular seal and a height h1 of the first annular groove in an axial direction of the first bore satisfy: (d6-d7)/2+0.2mm) h1 (d6-d7)/2+2mm) is less than or equal to;

7. The rotary compressor of claim 3, wherein a first thrust surface is provided between the first bore and the second bore, a second thrust surface is provided between the third bore and the fourth bore, and a distance d12 between the first thrust surface and the second thrust surface and the length L of the intake pipe satisfies: the thickness of the film is not less than 0.2mm (d12-L) and not more than 2 mm.

8. The rotary compressor of claim 1, wherein the inner diameter d7 of the first annular seal and the outer diameter d5 of the suction pipe satisfy: the thickness of the film is not less than 0.2mm (d5-d7) not more than 0.8 mm;

9. The rotary compressor of claim 1, wherein the outer diameter d6 and inner diameter d7 of the first annular seal satisfy: (d6-d7) of 2mm or less and (d) 2mm or less and 5mm or less;

10. A refrigerating apparatus comprising a rotary compressor of any one of claims 1 to 9.