CN116163926A - Suction line structure, compressor and refrigeration equipment - Google Patents

Abstract

The invention discloses an air suction pipeline structure, a compressor and refrigeration equipment, wherein the air suction pipeline structure comprises an air suction pipe which is arranged between a second air suction hole of a cylinder of the compressor and an external air supplementing pipeline, the air suction pipe is used for communicating the cylinder of the compressor and the external air supplementing pipeline, the air suction pipe is provided with a second air suction communicating section which is arranged between the second air suction hole of the cylinder of the compressor and a shell of the compressor, and the air suction pipe which is communicated with the second air suction hole and the external air supplementing pipeline is arranged, so that refrigerant gas of a second air suction channel is directly conveyed to the second air suction hole through the second air suction communicating section, the isolation between the second air suction channel and the first air suction channel is realized, and heat exchange and heat loss between the refrigerant gas in the second air suction channel and other parts in the shell of the compressor are also less, so that the refrigerant in the second air suction channel can keep the original characteristic, and the air suction pipeline structure for realizing high-energy efficiency air supplement is provided.

Description

Suction line structure, compressor and refrigeration equipment

Technical Field

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

Background

Worldwide, the reciprocating compressor is used as the largest energy consumption unit of the refrigeration system, and technology upgrading is needed to improve the energy efficiency coefficient COP and reduce the power consumption.

On being different from traditional singly breathe in singly exhausting compression pump body mechanism basis, novel single cylinder is two independently to breathe in pump body structure has the ability that promotes reciprocating compressor wholeness ability by a wide margin, sets up the air supplement unit and when to the compressor tonifying qi, corresponding add the breathing pipe, because of the breathing pipe is used for carrying high-pressure refrigerant gas, corresponding also can produce violent vibrations when high-pressure gas is through the breathing pipe, in order to guarantee the steady operation of whole compressor to and to noise influence's handle accuse, also put forward higher requirement to the breathing pipe. How to reduce the vibration noise level of the suction pipeline and the co-vibration interference of other pipelines in the compressor is a problem to be solved.

Disclosure of Invention

The invention mainly aims to provide an air suction pipeline structure, a compressor and refrigeration equipment, and aims to provide an air suction pipeline structure capable of reducing vibration noise.

In order to achieve the above object, the present invention provides an air suction pipeline structure for a compressor, the air suction pipeline structure includes an air suction pipe arranged between a second air suction hole of a cylinder of the compressor and an external air supplementing pipeline, the air suction pipe is used for communicating the cylinder of the compressor and the external air supplementing pipeline, and the air suction pipe is used for penetrating through a mounting hole of a shell of the compressor, so that the air suction pipe is at least partially arranged in an inner cavity of the shell of the compressor, and a second air suction communicating section is arranged between the second air suction hole of the cylinder of the compressor and the shell of the compressor.

Optionally, the second suction communication section has at least one bending section in a length direction thereof, so that a length of the second suction communication section is greater than a linear distance between the mounting hole and a second suction hole of a cylinder of the compressor.

Optionally, the air suction pipe comprises an inner air suction pipe and an outer air suction pipe which are mutually communicated, the inner air suction pipe is arranged in the inner cavity of the shell of the compressor and is used for being connected with a second air suction hole of the air cylinder of the compressor, and the outer air suction pipe is used for being connected with an air supplementing pipeline positioned outside the shell of the compressor.

Optionally, the external air suction pipe is arranged on the shell of the compressor and extends outwards from the mounting hole, the internal air suction pipe is provided with at least one bending section along the length direction of the internal air suction pipe, and the internal air suction pipe forms the second air suction communication section; or,

the outer air suction pipe is at least partially arranged in the inner cavity of the shell of the compressor so as to be provided with a connecting section positioned in the inner cavity of the shell of the compressor, the connecting section is provided with at least one bending section in the length direction of the connecting section, and the connecting section and the inner air suction pipe form the second air suction communication section; or,

the outer air suction pipe is at least partially arranged in the inner cavity of the shell of the compressor so as to be provided with a connecting section positioned in the inner cavity of the shell of the compressor, the inner air suction pipe is provided with at least one bending section in the length direction, and the connecting section and the inner air suction pipe form the second air suction communication section.

Optionally, the bending section comprises a first bending section and a second bending section which are arranged in an included angle, wherein the included angle between the first bending section and the second bending section is alpha, and alpha is more than or equal to 15 degrees and less than 180 degrees; and/or the number of the groups of groups,

the bending section further comprises an arc section connected between the first bending section and the second bending section, and the radius of the arc section is R, wherein R is more than or equal to 5mm.

Optionally, a plurality of bending sections are provided, and the number of the bending sections is n, wherein n is more than or equal to 1 and less than or equal to 10.

Optionally, the wall thickness of the inner air suction pipe is D, wherein D is more than or equal to 0.5mm and less than or equal to 2mm; and/or the number of the groups of groups,

the length of the inner air suction pipe is L1, wherein L1 is more than or equal to 10mm and less than or equal to 500mm.

Optionally, the material of the inner air suction pipe is metal or plastic.

Optionally, the inner suction pipe is welded, screwed or glued to the outer suction pipe.

Optionally, the length of the connecting section is L2, wherein L2 is more than or equal to 0mm and less than 500mm.

The present invention also provides a compressor including:

the cylinder body is provided with a first air suction hole on a cylinder cover, and a second air suction hole is also formed in the side wall of the cylinder body;

the piston assembly comprises a piston movably arranged in the cylinder body, a working cavity is formed between the piston and the bottom of the cylinder body, and the piston is provided with a top dead center positioned close to a cylinder cover of the cylinder body and a bottom dead center positioned far away from the cylinder cover of the cylinder body in the moving stroke; the method comprises the steps of,

one end of the air suction pipeline structure is connected with the second condensation flow path, and the other end of the air suction pipeline structure is connected with the second air suction hole;

the air suction pipeline structure comprises an air suction pipe arranged between a second air suction hole of an air cylinder of the compressor and an external air supplementing pipeline, the air suction pipe is used for communicating the air cylinder of the compressor with the external air supplementing pipeline, and the air suction pipe is used for penetrating through a mounting hole of a shell of the compressor, so that the air suction pipe is at least partially arranged in an inner cavity of the shell of the compressor, and a second air suction communicating section is arranged between the second air suction hole of the air cylinder of the compressor and the shell of the compressor.

Optionally, the distance between the second air suction hole and the first dead point is L, and the distance between the first dead point and the second dead point is S, wherein 0.5S is less than L.

Optionally, the outer wall of the cylinder is formed with a protrusion, and the protrusion is penetrated with a through hole along the thickness direction of the cylinder, and the through hole forms the second suction hole.

Optionally, the height difference between the convex part and the outer wall surface of the cylinder is H, wherein H is more than 0mm and less than or equal to 20mm.

The invention also provides refrigeration equipment, which comprises the compressor, wherein the compressor comprises the air suction pipeline structure, the air suction pipeline structure comprises an air suction pipe arranged between a second air suction hole of an air cylinder of the compressor and an external air supplementing pipeline, the air suction pipe is used for communicating the air cylinder of the compressor and the external air supplementing pipeline, and the air suction pipe is used for penetrating through a mounting hole of a shell of the compressor, so that the air suction pipe is at least partially arranged in an inner cavity of the shell of the compressor, and a second air suction communicating section is arranged between the second air suction hole of the air cylinder of the compressor and the shell of the compressor.

Optionally, the refrigeration device is a refrigerator.

According to the technical scheme provided by the invention, the temperature and the pressure of the refrigerant gas in the first air suction flow passage and the refrigerant gas in the second air suction flow passage are different, so that the first air suction flow passage can realize main air suction, the second air suction flow passage can realize air supplement, two paths of refrigerant gas are isolated, an air suction pipeline structure is used for being arranged between a second air suction hole of a cylinder of a compressor and an external air supplement pipeline and is used for being communicated with the cylinder of the compressor and the external air supplement pipeline, the air suction pipeline structure is used for being arranged in an installation hole of a shell of the compressor in a penetrating manner, so that at least part of the air suction pipeline structure is arranged in an inner cavity of the shell of the compressor, a second air suction communication section between the second air suction hole of the cylinder of the compressor and the shell of the compressor is arranged, the refrigerant gas in the second air suction flow passage is directly conveyed to the second air suction communication section through the second air suction communication section, the air suction pipe is not realized, the heat loss between the second air suction flow passage and the first air suction flow passage and the second air suction flow passage is reduced, the refrigerant gas can be more effectively exchanged through the second air suction communication section, and the refrigerant can be more effectively exchanged through the air supplement flow passage than the first air suction flow passage, and the refrigerant can realize the air supplement flow passage, and the characteristics can be more effectively exchanged through the air suction flow passage, and the air can be more effectively cooled through the air suction communication device, and the air can be compared with the air can realize the air suction channel.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of an embodiment of an air intake pipeline structure according to the present invention;

FIG. 2 is a schematic view illustrating an internal structure of a compressor according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of another embodiment of a compressor provided by the present invention.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

On being different from traditional singly breathe in singly exhausting compression pump body mechanism basis, novel single cylinder is two independently to breathe in pump body structure has the ability that promotes reciprocating compressor wholeness ability by a wide margin, sets up the air supplement unit and when to the compressor tonifying qi, corresponding add the second breathing pipe, because of the second breathing pipe is used for carrying high-pressure refrigerant gas, corresponding also can produce violent vibrations when high-pressure gas is through the second breathing pipe, in order to guarantee the steady operation of whole compressor to and to the handle accuse of noise influence, also put forward higher requirement to inside breathing pipe. The double-suction compressor comprises a first suction channel with lower air flow pressure and a second suction channel with higher air flow pressure, so that the energy efficiency of a refrigerating system can be effectively improved, the power consumption can be reduced, but the basic structure of the double-suction compressor causes larger air flow pulsation of the second suction channel, and the overall energy efficiency of the compressor is influenced.

It should be noted that the pulsation of the air flow, that is, the pulsation of the air flow pressure, causes vibration problems of the compressor pipeline, which is caused by intermittent suction and discharge of the reciprocating compressor cylinder, and causes periodic variation of the air flow rate and pressure in the pipeline. The operation of the compressor is adversely affected by the large pressure pulsation of the air flow, the tightness of the safety valve is damaged, the pipelines and equipment vibrate greatly, particularly the air flow passes through the pipeline elbow, the valve and the like, the large pressure unevenness becomes the main vibration force of the pipeline vibration, and the vibration stress generated at each connecting position of the pipelines possibly becomes the main cause of fatigue damage of the whole structure.

In order to solve the above-mentioned problems, the present invention provides an air suction pipeline structure 100, and fig. 1 is a schematic diagram of an embodiment of the air suction pipeline structure 100 according to the present invention.

Referring to fig. 1, the suction pipe structure 100 includes a suction pipe disposed between a second suction hole of a cylinder of the compressor 200 and an external air supply pipe, the suction pipe is configured to communicate the cylinder of the compressor 200 with the external air supply pipe, and the suction pipe is configured to be disposed through a mounting hole of a housing 4 of the compressor 200, so that the suction pipe is at least partially disposed in an inner cavity of the housing 4 of the compressor 200, so as to have a second suction communication section 1 disposed between the second suction hole of the cylinder of the compressor 200 and the housing 4 of the compressor 200.

Taking the refrigerating system of the refrigerator as an example, the compressor is used for the refrigerator to describe, because the refrigerator is in the refrigerating process, high-temperature and high-pressure refrigerant gas is conveyed from the compressor to the corresponding evaporators of the freezing chamber and the refrigerating chamber to evaporate and absorb heat, so that the refrigeration of the freezing chamber and the refrigerating chamber is realized, but the temperatures of the freezing chamber and the refrigerating chamber are inconsistent, the evaporating temperatures of the freezing chamber and the refrigerating chamber are different, the temperatures and the pressures of the refrigerant after the heat exchange of the freezing chamber and the refrigerating chamber are different, and in the prior art, the compressor realizes the refrigerating function of freezing and refrigerating through one flow path, so that the whole heat exchange system is required to participate in the work no matter whether the freezing chamber or the refrigerating chamber needs to be refrigerated, the energy consumption is larger, and the energy efficiency is lower.

In the compressor 200 for the suction line structure 100 of the present invention, by providing two parallel flow paths, namely, a freezing condensation flow path and a refrigerating condensation flow path, that is, the compressor 200 can reasonably distribute the high-temperature and high-pressure refrigerant formed by compression to the freezing flow path and the refrigerating flow path, after passing through the evaporator corresponding to the freezing chamber, the high-temperature and high-pressure refrigerant formed by compression of the compressor 200 returns to the compressor 200 at a lower temperature and a smaller pressure, and after passing through the evaporator corresponding to the refrigerating chamber, the high-temperature and high-pressure refrigerant formed by compression of the compressor 200 returns to the compressor 200 at a higher temperature and a larger pressure, the working chamber 2a of the cylinder 2 is simultaneously communicated with the first suction hole 21 and the second suction hole 22, so that the refrigerant flowing back from the freezing chamber can pass through the first suction flow path and the second suction flow path corresponding to the first suction hole 21, the refrigerant is conveyed to the compressor 200 at a lower temperature and a lower pressure through the first suction hole 21, and the refrigerant flowing back to the cylinder 2a higher pressure is conveyed to the second suction hole 22, and the working chamber 2a is further cooled by the compressor 2, and the working chamber 2a is further cooled by the working chamber 2 is conveyed to the second suction flow path corresponding to the first suction flow path and the second suction flow path corresponding to the first suction hole 21.

In the technical scheme provided by the invention, because the temperature and the pressure of the refrigerant gas in the first air suction flow passage and the second air suction flow passage are different, in order to keep the original characteristic of the refrigerant in the two air suction flow passages, the first air suction flow passage can realize main air suction, the second air suction flow passage can realize air supplement, the two paths of refrigerant gas are isolated, the air suction pipeline structure 100 is arranged between the second air suction hole of the cylinder of the compressor 200 and the external air supplementing pipeline, the air suction pipe is used for communicating the cylinder 2 of the compressor 200 and the external air supplementing pipeline, the air suction pipe is used for penetrating through the mounting hole of the shell 4 of the compressor 200, so that at least part of the air suction pipe is arranged in the inner cavity of the shell 4 of the compressor 200, the air suction pipe is provided with a second air suction communication section 1 positioned between the second air suction hole 22 of the cylinder 2 of the compressor 200 and the shell 4 of the compressor 200, the refrigerant in the first air suction flow passage enters the inner cavity of the shell 4, then the air in the inner cavity enters the inner cavity of the shell 4 from the first air suction hole 21, the air suction pipe enters the inner cavity 2 of the cylinder 2, the air suction pipe is communicated with the second air suction pipe through the second air suction pipe, and the air suction pipe is communicated with the inner air suction pipe through the second air suction flow passage, and the refrigerant communication section is less than the air suction flow passage 1, and the air suction flow passage is directly communicated with the inner air suction pipe through the second air suction pipe, and the air suction pipe is communicated with the inner air suction pipe through the second air suction flow passage, and the air suction pipe is communicated with the air inlet through the second air suction flow passage, and the air inlet through the second air inlet through the shell 4, the refrigerant in the second air suction flow passage can keep the original character and characteristics, and the air supply is realized with higher energy efficiency, so as to provide the air suction pipeline structure 100 capable of realizing the air supply with high energy efficiency.

Further, in this embodiment, the second suction communication section 1 has at least one bending section 13 along the length direction thereof, so that the length of the second suction communication section 1 is greater than the linear distance between the mounting hole and the second suction hole of the cylinder of the compressor 200, and the vibration of the suction line structure 100 can cancel the vibration noise generated by the pulsation of the air flow when the compressor 200 is operated by arranging at least one bending section 13 along the length direction thereof in the second suction communication section 1, so that the length of the second suction communication section 1 is greater than the linear distance between the mounting hole and the second suction hole 22 of the cylinder 2 of the compressor 200, and thus the bending section 13 can conform to the structure inside the compressor 200, the space inside the housing 4 of the compressor 200 is fully utilized without occupying additional space, so that the structure is more compact, and the suction line structure 100 is provided with the bending section 13, so that the flexibility thereof is stronger, and the vibration of the suction line structure 100 can cancel the vibration noise generated by the pulsation of the air flow when the compressor 200 is operated, so as to provide a line structure capable of reducing the suction noise.

Specifically, in this embodiment, for convenience of assembly and processing, the air suction pipe includes an inner air suction pipe 11 and an outer air suction pipe 12 which are disposed in communication with each other, the inner air suction pipe 11 is disposed in an inner cavity of the housing 4 of the compressor 200 and is used for being connected with the second air suction hole 22 of the cylinder 2 of the compressor 200, the outer air suction pipe 12 is used for being connected with an external air supplementing pipe located in the housing 4 of the compressor 200, when the compressor 200 is manufactured, the compressor 200 can be divided into an inner part and an outer part, and when the compressor 200 is assembled, the assembly can be performed in regions so as to avoid the overlong operation of the pipe, the inner air suction pipe 11 can be connected with the periphery of the second air suction hole 22 of the cylinder 2 of the compressor 200 first, then the outer air suction pipe 12 can be connected in steps, and the inner air suction pipe 11 can be precisely located in the second air suction hole 22, and the other end of the outer air suction pipe 12 can be precisely connected with the external air supplementing pipe by adjusting the outer air suction pipe 12.

Specifically, in one embodiment, the external air suction pipe 12 is configured to be disposed on the casing 4 of the compressor 200 and extends outward from the mounting hole, the internal air suction pipe 11 has at least one bending section 13 along a length direction thereof, and the internal air suction pipe 11 forms the second air suction communication section. In this way, the bending section 13 is provided on the inner air suction pipe 11, so that the transmission channel of the air flow is increased, the flexibility of the transmission channel is enhanced, and when the compressor 200 works, the vibration generated by the pulsation of the air flow can be counteracted by the swing of the inner air suction pipe 11, so that the noise is reduced, and the noise of the air suction pipeline structure 100 is correspondingly reduced.

In another embodiment, the external suction pipe 12 is at least partially disposed in the inner cavity of the casing 4 of the compressor 200, so as to have a connection section located inside the inner cavity of the casing 4 of the compressor 200, the connection section having at least one bending section 13 along its length, the connection section and the internal suction pipe 11 forming the second suction communication section 1. Thus, the bending section 13 is arranged on the connecting section, so that the transmission channel of the air flow is increased, the flexibility of the transmission channel is higher, and when the compressor 200 works, the vibration generated by the pulsation of the air flow can be counteracted by the swinging of the connecting section, so that the noise is reduced, and the noise of the air suction pipeline structure 100 is correspondingly reduced.

In another embodiment, the external suction pipe 12 is at least partially disposed in the inner cavity of the casing 4 of the compressor 200, so as to have a connection section located inside the inner cavity of the casing 4 of the compressor 200, the internal suction pipe 11 has at least one bending section 13 along its length, and the connection section and the internal suction pipe 11 form the second suction communication section 1. In this way, the bending section 13 is provided on the inner air suction pipe 11, so that the transmission channel of the air flow is increased, the flexibility of the transmission channel is enhanced, and when the compressor 200 works, the vibration generated by the pulsation of the air flow can be counteracted by the swing of the inner air suction pipe 11, so that the noise is reduced, and the noise of the air suction pipeline structure 100 is correspondingly reduced.

In another embodiment, the external suction pipe 12 is at least partially disposed in the inner cavity of the casing 4 of the compressor 200, so as to have a connection section located inside the inner cavity of the casing 4 of the compressor 200, the internal suction pipe 11 has at least one bending section 13 along its length, the connection section also has at least one bending section 13 along its length, and the connection section and the internal suction pipe 11 form the second suction communication section 1. This allows damping of the pipes located inside the shell 4 of the compressor 200, whether by providing said bending sections 13 on said inner suction pipe 11 or on said outer suction pipe 12, or simultaneously.

The bending section 13 includes a first bending section 131 and a second bending section 132 which are disposed at an included angle, where the included angle between the first bending section 131 and the second bending section 132 is α, and α is less than or equal to 15 ° and less than 180 °, it is understood that, while considering spatial arrangement, the included angle between the two bending sections 13 also needs to consider the resistance of the pipe wall at the bending position when the high-pressure air flow flows in the pipe, when the included angle between the two bending sections 13 is less than 15 °, the air flow is in a folded state relative to the direction of the air flow, the high-pressure refrigerant gas is blocked by the folded pipe wall to make the bending position more prone to strong shake, thereby increasing noise, and the bending position is prone to damage due to the impact of the high-pressure air flow for a long time; in another embodiment, the bending section 13 further includes an arc section 133 connected between the first bending section 131 and the second bending section 132, where the radius of the arc section 133 is R, and R is greater than or equal to 5mm, when the radius of the arc section 133 is set to be greater, the transition of the air flow of the high-pressure refrigerant is smoother, whereas when the radius of the arc section 133 is set to be smaller, the transition of the air flow of the high-pressure refrigerant is insufficient, and the noise is increased, and when the radius of the arc section 133 is greater than or equal to 3mm, the transition of the high-pressure gas is smoother, so that the performance of the suction pipeline structure 100 is better. In this embodiment, the bending section 13 includes a first bending section 131 and a second bending section 132 which are disposed at an included angle, where the included angle between the first bending section 131 and the second bending section 132 is α, and α is less than or equal to 15 ° and less than 180 °, and the bending section 13 includes a first bending section 131 and a second bending section 132 which are disposed at an included angle, and the bending section 13 further includes an arc section 133 connected between the first bending section 131 and the second bending section 132, where the radius of the arc section 133 is R, and R is greater than or equal to 5mm, so that not only the angle of airflow direction is ensured to be smoother, but also the transition of airflow is smoother.

Specifically, since the plurality of bending sections 13 can swing, when the number of the set sections is too small, the adjusting effect may not be optimal, and when the number of the set sections is too large, the volume occupied by the bending sections is large, interference with other parts is easy to occur in the working process, so that the plurality of bending sections 13 can achieve a good damping effect, and the internal space of the shell 4 of the compressor 200 can be adapted to the space enough for the plurality of bending sections 13 to move, in this embodiment, the bending sections 13 are provided with a plurality of bending sections 13, and the number of the bending sections 13 is n, wherein n is greater than or equal to 1 and less than or equal to 10.

Specifically, since the suction pipe structure 100 is used for delivering high pressure gas, the strength thereof is required, in this embodiment, the pipe wall thickness of the inner suction pipe 11 is D, wherein D is 0.5mm and 2mm; in another embodiment, the inner suction pipe 11 needs to be provided with a longer transmission path as far as possible when the outer suction pipe 12 and the second suction hole 22 are communicated, so that the longer the inner pipe of the inner suction pipe 11 is, the more flexible the inner pipe is, and when the compressor 200 is in operation, the vibration generated by the pulsation of the air flow can be counteracted by the swing of the inner suction pipe 11, so that the noise is smaller, and in this embodiment, the length of the inner suction pipe 11 is L1, and L1 is less than or equal to 10mm and less than or equal to 500mm.

In another embodiment, the wall thickness of the outer air suction pipe 12 is D, wherein D is 0.5 mm.ltoreq.D.ltoreq.2 mm; in another embodiment, the outer suction pipe 12 needs to be provided with a longer transmission path as far as possible when the outer suction pipe 12 and the second suction hole 22 are communicated, so that the longer the inner pipe of the outer suction pipe 12 is, the more flexible the inner pipe is, and when the compressor 200 is in operation, the vibration generated by the pulsation of the air flow can be counteracted by the swing of the outer suction pipe 12, so that the noise is smaller, and in this embodiment, the length of the outer suction pipe 12 is L3, and L3 is less than or equal to 10mm and less than or equal to 500mm.

Specifically, the material of inside breathing pipe 11 is metal or plastics when the material of inside breathing pipe 11 is metal, the stability of inside breathing pipe 11 is better to when being connected with the second suction port 22 periphery on the cylinder 2, all be the metal material, make welded connection more convenient, when the material of inside breathing pipe 11 is plastics, because plastics self has certain flexibility elasticity, its shock attenuation effect is also better, and corrugated pipe section can be along its axial flexible setting, make the inside breathing pipe 11 can be better the shake that the neutralization air current pulse produced, noise abatement.

Specifically, in the present embodiment, when the inner air intake pipe 11 and the outer air intake pipe 12 are made of metal, they may be welded or screwed, and when the inner air intake pipe 11 and the outer air intake pipe 12 are bonded with each other by plastic.

Specifically, in order to ensure the stability of connection, in this embodiment, the length of the connection section is L2, where 0mm is less than or equal to L2 < 500mm, when the connection section is 0mm, the external air suction pipe 12 is disposed in a through hole on the housing 4 of the compressor 200, the external air suction pipe 12 is disposed flush with the inner wall of the housing 4 of the compressor 200, and the external air suction pipe 12 and the internal air suction pipe 11 are connected at the housing 4.

The present invention also provides a compressor 200, and fig. 2 to 3 illustrate an embodiment of the compressor 200 according to the present invention.

Referring to fig. 3, the compressor 200 includes a cylinder 2, a piston assembly 3, and a suction pipe structure 100, wherein a first suction hole 21 is provided on a cylinder head of the cylinder 2, and the first suction hole 21 is used for communicating with a first condensation flow path; and the side wall is also provided with a second air suction hole 22, the second air suction hole 22 is communicated with a second condensation flow path, the piston assembly 3 comprises a piston 31 movably arranged in the cylinder body 2, a working cavity 2a is formed between the piston 31 and the bottom of the cylinder body 2, the piston 31 is provided with a top dead center positioned close to a cylinder cover of the cylinder body 2 and a bottom dead center far away from the cylinder cover of the cylinder body 2 in the moving stroke, one end of the air suction pipeline structure 100 is connected with the second condensation flow path, and the other end of the air suction pipeline structure 100 is connected with the second air suction hole 22.

Since the above-mentioned air suction pipe 100 is used in the compressor 200 of the present invention, the embodiments of the refrigeration apparatus of the present invention include all the technical solutions of all the embodiments of the above-mentioned air suction pipe structure 100, and the achieved technical effects are also identical, and are not described herein again.

Since it is often necessary to control the opening and closing of each suction hole by means of a control valve group in a conventional compressor, when the compressor has only one suction hole, one control valve group is provided; when the compressor is provided with a plurality of air suction holes, a plurality of control valve groups are generally correspondingly arranged, so that the control is complicated. Thus, in an embodiment of the present invention, the distance between the second suction hole 22 and the top dead center is L, and the distance between the top dead center and the bottom dead center is S, wherein 0.5S < L. During the movement of the piston 31, the opening and closing states of the first suction hole 21 and the second suction hole 22 are as follows:

an intake stroke of a cylinder, comprising:

first pass: the piston 31 moves from the top dead center to the bottom dead center, and the distance from the top dead center is less than 0.5S. In the first stroke, the control valve group is opened, so that the first suction hole 21 is conducted, and the second suction hole 22 is blocked by the piston 31. At this time, the working chamber 2a of the cylinder 2 is sucked only through the first suction hole 21. At this time, the total amount of the refrigerant in the working chamber 2a is from the first suction hole 21, i.e., the refrigerant of the first condensation circuit. It will be appreciated that, since the compression space of the working chamber 2a of the cylinder 2 increases when the piston 31 moves toward the position near the bottom dead center, it is in a negative pressure state, facilitating the external air flow from the first suction hole 21 into the working chamber 2a of the cylinder 2. And since the air flow pressure through the first suction hole 21 is smaller than the air flow pressure through the second suction hole 22. Therefore, in this moving stroke, the second suction hole 22 is blocked by the piston 31, so that the air flow of the second suction hole 22 is prevented from blocking the air flow of the first suction hole 21 to the working chamber 2a of the cylinder 2.

A second stroke: the piston 31 moves from the first dead point to the second dead point, and the distance from the first dead point is greater than 0.5S. In the second stroke, the piston 31 does not block the second suction hole 22, so that the second suction hole 22 communicates with the working chamber 2a of the cylinder 2. At this time, the control valve group is switched between an open state and a closed state according to actual requirements. When the control valve group is in an open state, the first suction hole 21 and the second suction hole 22 simultaneously input air flow into the working chamber 2a of the cylinder 2. Since a certain amount of air flow is sucked into the space of the working chamber 2a of the cylinder 2 through the first suction hole 21 in the first stroke, a certain air flow pressure is provided in the compression space. Therefore, when the air flow is inputted into the working chamber 2a of the cylinder 2 through the second suction hole 22, the air flow of the first suction hole 21 is less affected. And because the distance from the second air suction hole 22 to the first dead point is greater than 0.5S, that is, the distance from the second air suction hole 22 to the first air suction hole 21 is greater than 0.5S, a proper buffer distance exists between the second air suction hole and the first air suction hole, the influence of the air flow of the second air suction hole 22 on the air flow of the first air suction hole 21 is reduced, and the compression energy efficiency is improved. When the control valve group is in a closed state, the second suction hole 22 inputs an air flow to the working chamber 2a of the cylinder 2. At this time, the refrigerant supplied into the working chamber 2a comes from the second suction hole 22, i.e., the refrigerant of the second condensation circuit flows back into the working chamber 2a of the cylinder 2. It can be understood that the closer the second suction hole 22 is to the midpoint between the first dead point and the second dead point, the earlier the second suction hole 22 is opened and the later the second suction hole is closed, the longer the high-pressure refrigerant is provided by the second condensation circuit, and the larger the air supplement amount is; when the second suction hole 22 is closer to the second dead point, the second suction hole 22 is opened later and closed earlier, and the high-pressure refrigerant provided by the second condensation circuit is short in time and short in air supplementing time, so that the air supplementing amount is also smaller. In reality, the position of the second suction hole 22 may be set according to the requirement of the air supply amount.

A compression stroke of a cylinder, comprising:

third stroke: the piston 31 moves from the bottom dead center to a direction approaching the top dead center, and is greater than 0.5S from the top dead center. In the third stroke, the control valve group is closed, and the piston 31 is rapidly moved in a direction approaching the top dead center. At this time, the second suction hole 22 still inputs an air flow to the working chamber 2a of the cylinder 2. At this time, the refrigerant supplied into the working chamber 2a comes from the second suction hole 22. Therefore, in the third stroke, when the air flow in the working chamber 2a of the cylinder 2 is compressed, the air flow inputted into the working chamber 2a of the cylinder 2 via the second suction hole 22 is not excessively blocked yet, so that the cylinder 2 can still suck the air flow in the compression stroke. Further, the working chamber 2a of the cylinder 2 is mixed with the air flow from the first air intake hole 21 and the second air intake hole 22, so that the air flow pressure in the working chamber 2a of the cylinder 2 is smaller than the air flow pressure in the second air intake hole 22.

Fourth stroke: the piston 31 moves from the bottom dead center to a direction approaching the top dead center, and the distance from the top dead center is less than 0.5S. In the fourth stroke, the control valve group is still closed and the piston 31 shields the second suction hole 22. In the process, the piston 31 compresses the air flow in the working chamber 2a of the cylinder 2 into a high-pressure air flow. And when the piston 31 moves to the bottom dead center, the pressure of the air flow in the working chamber 2a of the cylinder 2 is compressed in place. At this time, the control valve group of the output pipe communicating with the working chamber 2a of the cylinder 2 is switched from the closed state to the open state to output the compressed high-pressure air flow.

The working lines of the compressor 200 corresponding to the two condensation flow paths are as follows:

the flow path of the air flow in the first air suction flow path is as follows: the first condensation flow path→the first suction hole 21→the working chamber 2a of the cylinder 2.

The airflow flow path in the second air suction flow passage is as follows: the second condensation flow path→the second suction hole 22→the working chamber 2a of the cylinder 2.

And the compressor 200 further includes an inner discharge pipe communicating with the working chamber 2a of the cylinder 2, the inner discharge pipe being adapted to communicate with an outer discharge pipe so as to discharge the compressed high-pressure air flow in the working chamber 2a of the cylinder 2 from the inner discharge pipe to the outer discharge pipe.

In a specific implementation, the first condensation flow path corresponds to a freezing chamber of a refrigerator, because the refrigerating capacity required by the freezing chamber is larger, the required refrigerant capacity is more, in the working engineering, the pressure of the consumed refrigerant is also more, the second condensation flow path corresponds to a refrigerating chamber of the refrigerator, because the required refrigerating capacity of the refrigerating chamber is smaller, the pressure of the consumed refrigerant is also less, thus the pressure in the first suction hole 21 is far smaller than the pressure of the second suction hole 22, but the refrigerant capacity of the first condensation flow path is larger, in the working process of the compressor 200, the first suction hole 21 is mainly opened for main suction in the first half suction stroke of the suction, the larger refrigerant capacity in the condensation flow path corresponding to the freezing chamber can be sucked, in the second half suction stroke of the rear part, the second suction hole 22 is communicated with the working cavity 2a, the first suction hole 21 is closed, the second suction hole 22 starts to be filled with high-pressure gas, in the compression stage is far smaller than the second suction hole 22, and the second suction hole 22 is opened and closed, and the second suction hole 22 is opened and closed in the second suction stroke is set, and the second suction hole 22 is opened and the second suction hole is opened. And the second air suction hole 22 is arranged on the side wall of the cylinder body 2 and is close to the bottom dead center, so that the compressor 200 does not need to specially arrange a control valve group to control the opening and closing of the second air suction hole 22, but can realize the automatic opening and closing of the second air suction hole 22 in the movable stroke of the piston 31, the structural design is ingenious, and the cost is saved.

It should be noted that, referring to fig. 3, the distance between the top dead center and the bottom dead center is S, that is, when the end face of the end of the piston 31 near the cylinder head of the cylinder 2 moves to the nearest distance near the bottom wall of the cylinder 2, the end of the piston 31 near the bottom wall of the cylinder 2 is located, and the bottom dead center is the position where the end face of the end of the piston 31 near the bottom wall of the cylinder 2 moves to the farthest distance away from the cylinder head of the cylinder 2, the end of the piston 31 near the bottom wall of the cylinder 2 is located. I.e. the distance S is the distance between the two extreme conditions of the end face of the piston 31 close to the end of the bottom wall of the cylinder 2. The distance between the second suction hole 22 and the top dead center is L, that is, the distance between the center line of the second suction hole 22 and the top dead center is L.

Further, in this embodiment, the outer wall of the cylinder 2 is formed with a protrusion, and the protrusion is formed with a through hole along the thickness direction of the cylinder 2, and the through hole forms the second suction hole 22, so that the inner suction pipe 11 can have a larger connection surface with the cylinder 2 due to a certain length of the protrusion, so that the connection is more stable. Specifically, in the present embodiment, the difference in height between the convex portion and the outer wall surface of the cylinder 2 is H, wherein 0mm < H.ltoreq.20 mm.

In addition, in order to achieve the above object, the present invention also provides a refrigeration apparatus, which includes the compressor 200 according to the above technical solution. It should be noted that, the detailed structure of the compressor 200 of the refrigeration device may refer to the embodiment of the compressor 200 described above, and will not be described herein again; because the compressor 200 is used in the refrigeration device of the present invention, the embodiments of the refrigeration device of the present invention include all the technical solutions of all the embodiments of the compressor 200, and the achieved technical effects are identical, and are not described herein again.

It should be noted that, the specific form of the refrigeration device is not limited, and the refrigeration device may be an air conditioner, a fresh air fan, or other devices. Specifically, in this embodiment, the refrigeration apparatus is a refrigerator.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims (15)

1. The utility model provides a pipeline structure of breathing in for the compressor, its characterized in that, the pipeline structure of breathing in is including being used for locating the breathing in between the second suction port of the cylinder of compressor and the outside air make-up pipeline, the breathing in is used for communicating the compressor cylinder with outside air make-up pipeline, the breathing in is used for wearing to locate the mounting hole of the casing of compressor, so that the breathing in is at least partly located in the inner chamber of the casing of compressor, with have the second intercommunication section of breathing in between the second suction port of compressor cylinder and the casing of compressor.

2. The suction line structure as claimed in claim 1, wherein the second suction communication section has at least one bent section in a length direction thereof such that a length of the second suction communication section is greater than a straight distance between the mounting hole and the second suction hole of the compressor cylinder.

3. The suction pipe structure as claimed in claim 1, wherein the suction pipe comprises an inner suction pipe and an outer suction pipe which are communicated with each other, the inner suction pipe is arranged in an inner cavity of the shell of the compressor and is used for being connected with the second suction hole of the compressor cylinder, and the outer suction pipe is used for being connected with an outer gas supplementing pipe of the shell of the compressor.

4. The suction pipe structure as claimed in claim 3, wherein the outer suction pipe is provided to be provided to the housing of the compressor and is provided to extend outwardly from the mounting hole, the inner suction pipe has at least one bent section in a length direction thereof, and the inner suction pipe forms the second suction communication section; or,

the external air suction pipe is at least partially arranged in the inner cavity of the shell of the compressor so as to be provided with a connecting section positioned in the inner cavity of the shell of the compressor, the connecting section is provided with at least one bending section in the length direction, and the connecting section and the internal air suction pipe form the second air suction communication section; or,

the outer air suction pipe is at least partially arranged in the inner cavity of the shell of the compressor so as to be provided with a connecting section positioned in the inner cavity of the shell of the compressor, the inner air suction pipe is provided with at least one bending section in the length direction, and the connecting section and the inner air suction pipe form the second air suction communication section.

5. The aspiration line structure of claim 4, wherein the bend section comprises a first bend section and a second bend section disposed at an angle, the angle between the first bend section and the second bend section being α, wherein 15 ° - α < 180 °; and/or the number of the groups of groups,

the bending section further comprises an arc section connected between the first bending section and the second bending section, and the radius of the arc section is R, wherein R is more than or equal to 5mm.

6. The aspiration line structure of claim 4, wherein the plurality of bending sections is provided in a number n, wherein n is 1.ltoreq.n.ltoreq.10.

7. The suction pipe structure as claimed in claim 3, wherein the wall thickness of the inner suction pipe is D, wherein D is more than or equal to 0.5mm and less than or equal to 2mm; and/or the number of the groups of groups,

the length of the inner air suction pipe is L1, wherein L1 is more than or equal to 10mm and less than or equal to 500mm.

8. The suction line structure as claimed in claim 3, wherein the material of the internal suction pipe is metal or plastic; and/or the number of the groups of groups,

the inner air suction pipe is welded, screwed or bonded with the outer air suction pipe.

9. The suction line structure as claimed in claim 4, wherein the length of the connection section is L2, wherein 0 mm.ltoreq.L2 < 500mm.

10. A compressor, comprising:

the cylinder body is provided with a first air suction hole on a cylinder cover, and a second air suction hole is also formed in the side wall of the cylinder body;

the piston assembly comprises a piston movably arranged in the cylinder body, a working cavity is formed between the piston and the bottom of the cylinder body, and the piston is provided with a top dead center positioned close to a cylinder cover of the cylinder body and a bottom dead center positioned far away from the cylinder cover of the cylinder body in the moving stroke; the method comprises the steps of,

the suction line structure according to any one of claims 1 to 9, wherein one end of the suction line structure is connected to the second condensation flow path, and the other end is connected to the second suction hole.

11. The compressor of claim 10, wherein the second suction hole is spaced from the first dead point by L and the first dead point is spaced from the second dead point by S, wherein 0.5S < L.

12. The compressor of claim 10, wherein the outer wall of the cylinder is formed with a protrusion, the protrusion is penetrated with a through hole in a thickness direction of the cylinder, and the through hole forms the second suction hole.

13. The compressor of claim 12, wherein a height difference between the convex portion and the cylinder outer wall surface is H, wherein 0mm < h.ltoreq.20 mm.

14. A refrigeration device comprising a compressor as claimed in any one of claims 10 to 13.

15. The refrigeration appliance of claim 14 wherein the refrigeration appliance is a refrigerator.

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