CN113606146A

CN113606146A - Air suction check assembly and scroll compressor comprising same

Info

Publication number: CN113606146A
Application number: CN202111088465.3A
Authority: CN
Inventors: 龙孝天; 方琪; 刘双来
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2021-11-05
Anticipated expiration: 2041-09-16
Also published as: CN113606146B

Abstract

The invention provides a suction check assembly and a scroll compressor comprising the same. The non return assembly of breathing in for the setting prevents the backward flow of breathing in at the suction port department of compressor, includes: the top of the upper cover is provided with a flow guide structure which has a guiding effect on the air sucked by the air suction port; the base and the upper cover are oppositely arranged; the elastic piece is arranged between the upper cover and the base and can provide thrust for the upper cover; the upper cover has a first state for closing the air suction port of the compressor and a second state for opening the air suction port, the upper cover can be kept in the first state under the thrust action of the elastic piece, and the upper cover can be kept in the second state under the thrust action of the air suction port for sucking air flow. The air suction non-return assembly has the air suction guiding function, the upper cover has the positioning function, the function of reducing air suction resistance is realized by guiding air, irregular movement of parts in the operation process is avoided by increasing restraint and positioning, and the operation reliability of the compressor is improved.

Description

Air suction check assembly and scroll compressor comprising same

Technical Field

The invention relates to the technical field of compressors, in particular to a suction non-return assembly and a scroll compressor comprising the same.

Background

To current scroll compressor tradition technique, the non return structure of breathing in is generally just placing under the induction port, when the compressor operation, from the gaseous of compressor induction port entering, get into pump body induction port at the non return department of breathing in and compress, according to present scroll compressor tradition structure, the upper end of the non return subassembly of breathing in is perpendicular with the direction of breathing in, this structure will lead to the gaseous of induction port entering can produce a reverse impact in the non return upper end department of breathing in, lead to the resistance increase of breathing in, the compressor consumption increases, and lead to its efficiency increase. Meanwhile, the conventional suction check assembly is an unconstrained part, so that the part can rotate or tilt in a suction passage of the fixed scroll plate, the part collides with the fixed scroll plate, vibration noise is generated, and the instability of the compressor is increased.

Disclosure of Invention

In view of the above, the present invention provides a check assembly and a scroll compressor including the same, which are at least used for solving the technical problem of poor flow guidance of a suction check structure of a compressor in the prior art, and specifically:

in a first aspect, the present invention provides a suction check assembly for preventing suction gas from flowing backward, provided at a suction port of a compressor, comprising:

the top of the upper cover is provided with a flow guide structure which has a guiding effect on the air sucked by the air suction port;

the base and the upper cover are oppositely arranged;

the elastic piece is arranged between the upper cover and the base and can provide thrust for the upper cover;

the upper cover has a first state of closing the air suction port of the compressor and a second state of opening the air suction port,

the upper cover can be maintained in the first state by the thrust of the elastic member, and the upper cover can be maintained in the second state by the thrust of the suction air flow of the suction port.

Further optionally, the flow guide structure is an inclined surface formed on the outer wall surface of the top of the upper cover.

Further optionally, the inclined surface is an inclined smooth arc surface.

Further optionally, the non return assembly of breathing in still includes the guide bar, the first end of guide bar with the base links to each other, it is provided with the direction through-hole to cover on, the direction through-hole follow the second end of guide bar wears to establish on the guide bar, the guide bar is right the upper cover removes and leads.

Further optionally, when the upper cover is in the first state, the second end of the guide rod is located in the guide hole, or the second end of the guide rod is flush with the top end surface of the upper cover.

Further optionally, the upper cover is slidably disposed within a suction passage of the compressor,

the air suction channel is internally provided with a first guide part, the upper cover is provided with a second guide part, and the first guide part is in sliding fit with the second guide part.

Further optionally, the first guide portion is of a sliding groove structure, and the second guide portion is of a sliding block structure; alternatively, the first and second electrodes may be,

the first guide part is of a sliding block structure, and the second guide part is of a sliding groove structure.

Further alternatively, the upper cover may be slidably provided in a suction passage of the compressor, an inner wall surface of the suction passage may be formed with a first mating surface formed along a sliding direction of the upper cover,

the lateral wall of upper cover is formed with the second fitting surface, first fitting surface with second fitting surface sliding fit can be to the slip of upper cover leads.

Further optionally, the first mating surface and the second mating surface are both planar.

Further optionally, a plurality of the first mating surfaces and the second mating surfaces are provided,

and the included angle between the first matching surfaces is multiple, the included angle between the second matching surfaces is multiple, and the included angle between the first matching surfaces is the same as the included angle between the second matching surfaces.

In a second aspect, the present invention provides a scroll compressor, comprising a suction pipe, wherein the suction pipe is communicated with a suction cavity through a suction channel, the suction non-return assembly is arranged in the suction channel,

and when the air suction pipe is in the first state, the upper cover abuts against the end part of the air suction pipe to seal the air suction pipe.

The air suction non-return assembly has the air suction guiding function, the upper cover has the positioning function, the function of reducing air suction resistance is realized by guiding air, irregular movement of parts in the operation process is avoided by increasing restraint and positioning, and the operation reliability of the compressor is improved.

Drawings

The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.

FIG. 1 shows a schematic view of the construction of an embodiment of the suction check valve assembly of the present invention (first state);

FIG. 2 shows a schematic view of an embodiment of the suction check valve assembly of the present invention (second state);

FIG. 3 is a schematic structural diagram of an upper cover according to an embodiment of the present invention (with guide holes provided);

FIG. 4 is a schematic view showing a state where an upper cover is fitted to a suction passage (a guide block is fitted to a guide groove) according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of the upper cover (with a slider) according to the embodiment of the present invention;

FIG. 6 is a schematic view showing the state of the upper cover engaged with the air suction passage (the sliding groove and the sliding block are engaged) according to the embodiment of the present invention;

FIG. 7 is a schematic structural view of the upper cover according to the embodiment of the present invention (provided with a second mating surface);

FIG. 8 is a schematic view showing a state where the upper lid is fitted to the suction passage according to the embodiment of the present invention (the first fitting surface and the second fitting surface are fitted);

fig. 9 shows a schematic view in partial section of a compressor according to an embodiment of the present invention (the upper cover is in a first state);

fig. 10 shows a partial cross-sectional view of a compressor according to an embodiment of the present invention (the upper cover is in the second state).

In the figure:

1. an upper cover; 11. a flow guide structure; 12. a guide hole; 13. a slider structure; 14. a second mating surface; 2. a base; 3. an elastic member; 4. a guide bar; 5. a guide block; 6. a top cover; 7. an air intake duct; 8. a housing; 9. a fixed scroll; 10. a movable scroll; 101. an upper bracket; 102. a crankshaft; 103. an anti-rotation structure; 104. an air suction passage.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

The air suction non-return assembly has the air suction guiding function, the upper cover has the positioning function, the function of reducing air suction resistance is realized by guiding air, irregular movement of parts in the operation process is avoided by increasing restraint and positioning, and the operation reliability of the compressor is improved. The invention is described in detail below with reference to specific examples:

as shown in fig. 1 to 10, the present invention provides a suction check assembly for preventing suction gas from flowing backward at a suction port of a compressor, comprising: the top of the upper cover 1 is provided with a flow guide structure 11; the base 2, the base 2 and the upper cover 1 are oppositely arranged; an elastic member 3, preferably a pressure spring, disposed between the upper cover 1 and the base 2, capable of providing a pushing force to the upper cover 1; the upper cover 1 has a first state of closing the air inlet of the compressor and a second state of opening the air inlet, the upper cover 1 can be kept in the first state under the thrust action of the elastic member 3, as shown in fig. 1, and the upper cover 1 can be kept in the second state under the thrust action of the air flow sucked by the air inlet, as shown in fig. 2.

As shown in fig. 3, the flow guiding structure 11 is an inclined surface, preferably an inclined smooth arc-shaped inclined surface, formed on the top outer wall surface of the upper cover 1, and the air flow sucked by the air suction port flows into the air suction cavity of the compressor under the action of the flow guiding structure 11. The arrangement of the arc-shaped inclined plane reduces air intake recoil caused by air suction on the flow guide structure 11, and can well play a role in guiding air flow and reducing air suction resistance. Further, the flow guiding structure 11 may also be configured as an inclined groove structure to improve the flow guiding effect on the suction airflow.

Preferably, the non return assembly of breathing in still includes guide bar 4, and the first end of guide bar 4 links to each other with base 2, is provided with the direction through-hole on the upper cover 1, and the direction through-hole wears to establish on guide bar 4 from the second end of guide bar 4, and upper cover 1 can slide along guide bar 4, and guide bar 4 removes upper cover 1 and leads to make upper cover 1 slip in-process can not produce and turn on one's side. The guide hole 12 and the guide rod 4 are in sliding sealing fit, so that air leakage of the guide hole 12 when the upper cover 1 is in the first state is avoided.

Further, when upper cover 1 was in first state, the second end of guide bar 4 was located guiding hole 12, perhaps, the second end of guide bar 4 was held the parallel and level with the top end face of upper cover 1, and when upper cover 1 was in first state promptly, the second end of guide bar 4 did not wear out guiding hole 12, avoided guide bar 4 and other parts of compressor to collide, also guaranteed that upper cover 1 can effectual and induction port radial seal contact, improved sealed effect.

As shown in fig. 5 and 6, in another embodiment, the upper cover 1 is slidably disposed in a suction passage 104 of the compressor, a first guide portion is disposed in the suction passage 104, and a second guide portion is disposed on the upper cover 1, and the first guide portion is slidably engaged with the second guide portion. Preferably, the first guide part is a sliding groove structure, and the second guide part is a sliding block structure 13; or, the first guide part is a slider structure 13, and the second guide part is a sliding groove structure. In this embodiment, first guide part is the spout structure, and the second guide part is slider structure 13, and further, first guide part is the dovetail structure, and the second guide part is dovetail slider structure 13, and first guide part and the cooperation of second guide part both can play the slip guide effect, can spacing in the perpendicular direction of slip direction again simultaneously, guarantee upper cover 1 reliability at the slip operation in-process. It is easy to think that the first guide part and the second guide part can also be respectively provided with a T-shaped groove, a T-shaped slide block and the like.

As shown in fig. 4, it is also preferable to provide a guide block 5 in the suction channel 104, with a corresponding guide groove forming a sliding fit in the upper cover 1.

As shown in fig. 7 and 8, in another embodiment, the upper cover 1 is slidably disposed in the suction passage 104 of the compressor, a first engagement surface is formed on an inner wall surface of the suction passage 104 along a sliding direction of the upper cover 1, a second engagement surface 14 is formed on a side wall of the upper cover 1, and the first engagement surface and the second engagement surface 14 are slidably engaged to guide sliding of the upper cover 1. Preferably, first fitting surface and second fitting surface 14 are the plane for first fitting surface and the cooperation of second fitting surface 14 can carry out spacingly to upper cover 1 in circumference, avoid upper cover 1 to take place to rotate and influence the water conservancy diversion effect of its water conservancy diversion structure 11 in the slip in-process. Furthermore, the first matching surfaces and the second matching surfaces 14 are provided in plurality, an included angle is formed between the first matching surfaces, an included angle is formed between the second matching surfaces 14, and the included angle between the first matching surfaces is the same as the included angle between the second matching surfaces 14. In this embodiment, first fitting surface and second fitting surface 14 all set up two, form the contained angle between two first fitting surfaces, form the contained angle between two second fitting surfaces 14, and first fitting surface and the cooperation of second fitting surface 14 play the fool-proofing effect, can guarantee that the wrong condition of dress does not appear in the assembling process.

The present invention also provides a scroll compressor, as shown in fig. 9 and 10, comprising a top cover 6, a housing 8, an eccentric bearing, an anti-rotation structure 103, an upper bracket 101, a crankshaft 102, a fixed scroll 9, a movable scroll 10, a suction pipe 7, a suction check assembly and a suction passage 104. The upper support 101 is connected with the shell 8 through welding, the crankshaft 102 drives the movable scroll 10 through an eccentric bearing, the phase angle difference between the movable scroll 10 and the fixed scroll 9 is 180 degrees, the movable scroll 10 is installed on the upper support 101 in an opposite mode, the movable scroll 10 moves under the driving of the crankshaft 102 and is meshed with the fixed scroll 9 to form a series of crescent sealed containing cavities (compression cavities) which are isolated from each other and continuously changed in volume, the air suction channel 104 is located on the lower side of the air suction pipe 7 and is communicated with the air suction cavities between the fixed scroll 9 and the movable scroll 10, and the air suction non-return assembly is arranged in the air suction channel 104 and is used for plugging the end portion (namely an air suction port) of the air suction pipe 7 in a shutdown state.

When the compressor is in a shutdown state or needs to perform suction and non-return, the upper cover of the suction and non-return assembly is under the thrust action of the elastic element 3 and under the action of the pressure difference between the upper cover 1 and the lower cover 1 caused by the fact that the pressure of compressed gas is greater than the suction pressure, so that the upper cover 1 is in first filling, namely the upper cover 1 is pressed on the lower end face of the suction pipe 7, the compressed gas between the fixed scroll 9 and the movable scroll 10 cannot be discharged through the suction pipe 7, and the compressor is prevented from reversing. When the compressor normally operates, the gas to be compressed entering from the air suction pipe 7 enables the check assembly upper cover 1 to be separated from the lower end face of the air suction pipe 7, namely the upper cover 1 is in the second state, and the gas to be compressed enters the pump body to be compressed.

Preferably, the lower end surface of the air suction pipe 7 is an inclined surface, and when the upper cover 1 is parallel to the flow guide structure 11 and the upper cover 1 is in the first state, the upper cover 1 and the lower end surface of the air suction pipe 7 form sealing fit, so that the sealing performance is ensured. The inclined plane of upper cover 1 aims at the pump body subassembly air inlet, and when the non return subassembly was compressed, the gas that gets into by breathing pipe 7 was on the inclined plane of upper cover 1, and the pump body induction port is got into by the bounce-back, has reduced traditional non return subassembly because of the inspiratory resistance that this place gas recoil produced.

Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A suction check assembly for preventing suction backflow at a suction port of a compressor, comprising:

the base and the upper cover are oppositely arranged;

2. The aspirating check assembly of claim 1, wherein said flow directing structure is an inclined surface formed on the top exterior wall surface of said cover.

3. The aspirating check assembly of claim 2, wherein said inclined surface is a sloped smooth arc.

4. The assembly as claimed in any one of claims 1 to 3, further comprising a guide rod, wherein a first end of the guide rod is connected to the base, the upper cover is provided with a guide through hole, the guide through hole is arranged on the guide rod from a second end of the guide rod, and the guide rod guides the movement of the upper cover.

5. The aspirating check assembly of claim 4, wherein the second end of said guide rod is positioned within said guide hole or is flush with the top end surface of said upper cover when said upper cover is in said first condition.

6. The suction check assembly of claim 4, wherein the upper cover is slidably disposed within a suction passage of the compressor,

7. The aspirating check assembly of claim 6, wherein said first guide portion is a chute structure and said second guide portion is a slider structure; alternatively, the first and second electrodes may be,

8. The suction check assembly as claimed in claim 4, wherein the upper cover is slidably provided in a suction passage of the compressor, the suction passage is formed with an inner wall surface formed with a first mating surface along a sliding direction of the upper cover,

9. The aspirating check assembly of claim 8, wherein said first mating surface and said second mating surface are both planar.

10. The aspirating check assembly of claim 8, wherein a plurality of said first mating surfaces and said second mating surfaces are provided,

11. A scroll compressor comprising a suction tube communicating with a suction chamber through a suction passage, the suction passage having a suction check assembly as recited in any one of claims 1 to 10 disposed therein,